Statistics for managers individual work wk9 Coursework

Statistics for managers individual work wk9 - Coursework Example The high prices houses are said to be determined by the number of bedrooms, the age of the house, and the number of the bathrooms and their quality. The closeness to the cosmopolitan cities and the shabby (Byers et al 1997). The average selling prices of the houses in USA is also determined by other factor like the prestige associated by the locality of the house. A survey conducted on the Public opinion polls measure not only acceptance of the selling prices of the houses in USA by the citizens, but also public opinion on a wide range of social and economic issues that attribute to the prices of the houses. Public opinion is a critical force in shaping and transforming society most on the matter that influence and affect the public in general. Through opinion research, the public, the media and other interested groups have access to accurate measures of public attitudes and intentions on the issue of the selling prices of the houses. Sociologists can follow shifts of opinion on the major social problems and chart the evolution of the values. And citizens can now make themselves be heard at all times and compare their own view with those of others (Byers et al 1997). There seems to be two groups of academic researchers, in which one continues to support the high selling prices of the houses in USA and its positive impact to the economy, they believe that the main purposes of investment in real estate business is to improve real economic value. It is also agreed that housing leads to improvement in productivity, innovation, and job creation in every field of economy (Kraemer and Dedrick 1996; Agarwal, 1997; Shin 1999; Gray et al, 2000; Lee & Bose 2002; Laudon and Laudon, 2011; and Gecti and Dastan, 2013). The other group criticizes the bad impact of high selling prices of the houses on ecomony and the fact that high selling prices lead to development of low house quality leading to

Religion, Spirituality, and Health Status in Geriatric Outpatients Essay Example for Free

Religion, Spirituality, and Health Status in Geriatric Outpatients Essay Daaleman, Perrera and Studenski wished to re-examine the effect of religiosity and spirituality on perceptions of older persons, operationalized as geriatric outpatients. The authors proceeded from two conceptual constructs.   The first is that self-reported health status is central to aging research.   The old know whereof they speak.   Self-ratings are valid because they correlate well with health status over time and, consequently, health service utilization.   The second construct is that, no matter how morally they lived as young adults, those in late middle age come to embrace religion and spirituality with more fervor. Prior research had scrutinized the relationship between religion and health perceptions.   Some results were inconclusive, an outcome that the authors attributed to failure to control for such covariates as spirituality. Definitions vary, the authors acknowledged, but they proposed defining â€Å"religiosity† as principally revolving on organized faith while â€Å"spirituality† has more to do with giving humans â€Å"meaning, purpose, or power either from within or from a transcendent source.†Ã‚   In turn, the dependent variable was measured by a single-item global health from the Years of Healthy Life (YOHL) scale, a self-assessment of general health (would you say your health in general is †¦) and a 5-item Likert response from excellent to poor. Fieldwork consisted of including a 5-item measure of religiosity15 and a 12-item spirituality instrument in a 36-month health service utilization, health status, and functional status study among 492 outpatients of a VA and HMO network, all residents of the Kansas City metropolitan area. The authors were remiss in not formally articulating their hypotheses for the study though one gleans that the alternative hypothesis could have stated, â€Å"Structured religion, a deep sense of spirituality, mental status and mobility, and personal and demographic variables materially influence measures of health status and physical functioning.† In the end, the data was subjected to univariate and multivariate best-fit statistics.   The key findings: Table 2. Predictors of Self-Reported Good Health Status (N = 277) Factor* Unadjusted OR (95% CL Adjusted OR (95% CI) Age 0.94 (0.89–0.99)†  Male 0.72 (0.41–1.25)†¡ White race 2.79 (1.51–5.17) § 3.32 (1.33–8.30) ¶ Grade school 0.1 (0.02–0.49) ¶ Some high school 0.28 (0.06–1.44)†¡ High school graduate 0.24 (0.05–1.14)†¡ Technical/business school 0.29 (0.06–1.43)†¡ Some college 0.31 (0.06–1.49)†¡ Not depressed (GDS) 32.4 (4.03–261) § Physical functioning(SF36-PFI) 1.04 (1.03–1.05) § 1.03 (1.01–1.04) § Quality of life (EuroQol) 1.69 (1.41–2.01)†  1.36 (1.09–1.70)†  Religiosity (NORC) 0.93 (0.85–1.02)†¡ Spirituality (SIWB) 1.15 (1.10–1.21) § 1.09 (1.02–1.16)†  OR = odds ratio; CI = confi dence interval; GDS = Geriatric Depression Scale; SF36-PFI = Physical Functioning Index from SF-36; NORC = National Opinion Research Center; SIWB = Spirituality Index of Well-Being. *Referent factors: age-1 year younger; female, nonwhite; college graduate; GDS score of 0-9; PFI-index of 1 less; EuroQol-score of 0.1 less; SIWB-score of 1 less. †  P = .01. †¡ P = NS.  § P .01.  ¶ P .05. After adjusting for all covariates, the authors tentatively concluded that spirituality was an important explanatory factor for perceptions of one’s own physical well-being.   That religiosity did not seem statistically relevant, the authors concede, could be due to having defined the variable partly as attendance at religious services, a behavior possible only if the patient was functional and ambulant.   Still, the authors argue, they did include other measures of religiosity and the regression model did hold being functional constant. While the study did establish a relationship between self-perceptions of health and spirituality, the authors themselves point out the possibility that the two variables are not independent.   The conceptual framework of the SIWB spirituality measure includes a â€Å"high degree of positive intentionality†, which strikes one as very similar to health optimism as independent variable. Article 2: Religious coping and psychological functioning in a correctional population Lonczak, Clifasefi1, Marlatt, Blume, . Donovan tested the relationship among religious upbringing, coping and mental health outcomes in the admittedly-stressful prison environment. This time, the authors do not mince words.   They preface the literature review with the majority’s belief in God (or some higher being) as the core aspect of religiosity.   Second, they point out that two separate meta-analysis carried out in 1983 and 2003 showed mixed results for a relationship between religiosity and coping.   Perhaps, they argue, this is because religious coping has negative-coping aspects, such as the conviction that all one’s troubles are due to abandonment by God. Since a search of the literature had revealed only one study concerning prisoners – the positive effect of meditation on recidivism psychological symptoms in India – Lonczak et al. thought to embark on this study of a neglected population.   Secondly, the authors hoped to advance theory by defining religious coping more specifically than had ever been done. There were multiple hypotheses attending this study: That the high degree of stress experienced by prisoners triggers an increase in religious coping behaviors (e.g., prayer, reading, spirituality, attendance in religious activities, etc.). That the positive coping encouraged by religiosity brings about comfort and solace and hence increases the likelihood of adaptive outcomes. That a religious upbringing provides individuals a repertoire of positive coping behaviors from which to draw strength. Coming to data processing and statistical â€Å"tests†, Longczak et al. employed principal component analyses using Varimax rotation.   The result was a four-factor model with their respective Cronbach alpha reliability estimates: Spirituality (0.97); â€Å"Good deeds† and active participation in coping related activities (0.89); Pleading (0.83); and, Discontentment (0.74). In addition, the researchers administered the Brief Symptom Inventory to measure four dimensions: depression, anxiety, somatization and hostility. At the first stage of analysis, relationships between religiosity on one hand and either gender or ethnic group on the other were tested for in bivariate correlations, t-tests, ANOVAs, or chi square tests. Subsequently analyses involved four hierarchical linear regressions (one for each outcome) including both gender and stressful life events by each of the five religion measures.   In order to examine the relationships between religion-focused predictors and outcomes with and without separate statistical adjustment for sociodemographic variables, variables were processed in a given sequence (below) and non-significant terms removed from later analyses. Religious upbringing, participation, spirituality, pleading and discontentment in the first block; Gender, ethnic group, age, education, and stressful life events in the second block; and, Interaction terms in the third and fourth blocks. The findings provided support for the hypothesis that an upbringing characterized by formal or structured religion has positive mental health ramifications, including less depression and hostility.   Secondly, women are more adversely affected by discontentment-based coping.   Religious pleading notwithstanding, thirdly, prisoners who had experienced stressful life events were more likely to evince depression and hostility. Article #4: Effect of religion on suicide attempts in outpatients with schizophrenia or schizo-affective disorders compared with inpatients with non-psychotic disorders Huguelet et al. also focused on religion, this time in relation to psychosis and, specifically the propensity to suicide. Among the 115 patients with schizophrenia or schizo-affective disorders covered by the study, 43% had previously attempted suicide.   Broadly speaking, the team wished to find out whether religion was a protective or impelling factor in these suicide attempts. Suicide deserves attention, the authors maintained, because over 9 in 10 suicides are accompanied by a diagnosis of psychiatric illness.   Over the lifetime of a schizophrenic, in particular, meta-analysis has shown a 0.049 probability of death by suicide. Given the importance of reducing suicidal behavior, it seemed encouraging that spirituality and religious activities had ameliorate the risk.   Prior research on piety and spirituality had suggested that the coping mechanisms could involve both a more positive world view and a shield against stress. HYPOTHESIS AND STATISTICAL ANALYSIS: No relationship could be found for religiousness and the tendency to attempt suicide.   Twenty-five percent of all the study subjects acknowledged that religion inhibited them from considering suicide versus only one in ten that articulated an â€Å"incentive† role for religion. Overview of Findings The four articles explored different facets of spirituality and religiosity.   Daaleman, Perrera and Studenski related spirituality to health perceptions.   Lonczak et al.turned their attention to whether a religious upbringing helped adults cope better with a stressful environment, imprisonment in this case.   In the case of Huguelet et al., the question was whether present religious beliefs encouraged suicide or strengthened coping mechanisms for resisting self-destructive compulsions. After adjusting for all covariates, Daaleman, Perrera and Studenski tentatively concluded that spirituality was an important explanatory factor for perceptions of one’s own physical well-being.   Religiosity was not a factor, for reasons already explained.   One doubts this will be the last word on the matter, however, since the study lacked rigor. Nonetheless, the finding about spirituality is helpful given that therapy is a way of expanding awareness and identity.   As well, Transactional Analysis â€Å"recognizes the spiritual dimension of each person as an important part of the therapeutic process† (Trautman, 2003).   On the other hand, one realizes the limitations of analyzing spirituality vis-à  -vis health perception when the two variables overlap, at least on the aspect of optimism. One is therefore led to wonder, might it not advance therapy theory and praxis if: a) Spirituality and religiosity were qualitatively tested as a compound, unified variable; and, b) Health-related research include objective measures of well-being as the realistic dependent variable? For Lonczak et al. the implications for counseling have more to do with discontent and religious pleading. Counseling might address the roots and implications of religious distress and assist patients in developing more adaptive coping strategies.   Notwithstanding the focus on a tightly defined population segment (older adults jailed for alcohol- and drug-related offenses), the authors are correct to point out the immense social good clinicians and prison administrators could foster if low-cost religious or spirituality-enhancing programs did contribute to â€Å"significant reductions in behavior management problems, psychological impairment, and subsequent recidivism.† Similarly, the findings of Huguelet et al. suggest that suicide rates among psychotic patients could well be reduced if therapy embraced reinforcement or revival of religious beliefs.   References Trautmann, R. (2003) Psychotherapy and spirituality. Transactional Analysis Journal, 33, (1) 32-36.

What are Emotions? Essay -- Psychology Emotional Essays

What are Emotions? What are emotions and do they affect those we relate to in our daily lives. Webster’s Dictionary describes emotions as an affective state of consciousness in which joy, sorrow, fear, or the like is experienced. One can easily see emotions are a strong surge of feelings. These feelings could be happy, sorrowful, joyful, and anxious. You know these feelings and have probably experienced them all from time to time. Different situations will affect our emotions and cause them to change, but can our emotions affect the people that surround us? Do people adjust their attitudes and emotions according to those they are around? In Alice Walker’s, â€Å"Am I Blue,† she is deeply affected by the horse and the different emotions it displays. Blue’s emotions affected the way she was feeling. If she felt that he was happy, then she too felt happy. In Walker’s essay, she speaks about Blue’s reaction to loosing his companion and how he grieved. Alth ough he was in a beautiful place, with thousands of acres to run, he had no one to share this with; therefore he became devastated and sad. After reading this article, a pre-school/kindergarten teacher decided to see how her moods and emotions would affect her students. Would their actions and behavior depend solely on the emotions she was experiencing? After watching and observing them over a period of time and experiencing both good moods and bad moods, this is what she found. Emotions or one’s emotional state definitely affects how we function and interact with others, especially children. When a teacher is in a good mood, he/ she will exercise more energy and will display more patience with his/her students. This will have a positive affect on the clas... ...y will ask someone else. If the teacher continues to be in a state of emotional stress, his/ her students will begin to have fear. Also, they may not have the eagerness to learn; they won’t ask questions because they’re afraid to ask. Whether the teacher is in a good mood or a bad mood, their emotions will affect those they are teaching. In conclusion, one can tell emotions affect everyone in both positive and negative ways. On order to be a good teacher, one must exude energy, patience, knowledge, and creativity at all times. Therefore, it is very important for a teacher to try to leave any negative emotions; he/she may be feeling at home. If a teacher displays negative emotions, it will not only affect his/her students, but it will also take away from one or all the qualities he/she should posses in order to be a good and affective teacher.

Environmental Economic Impact of Pollution in the Chesapeake Bay Essay

The Chesapeake Bay is the nation’s largest estuary with six major tributaries, the James, the Potomac, the Susquehanna, the Patuxent, the York, and the Rappahannock Rivers, feeding into the bay from various locations in Maryland, Virginia, Pennsylvania, and the District of Columbia (Chemical Contaminants in the Chesapeake Bay – Workshop Discussion 1). These areas depend on the Bay as both an environmental and an economic resource. Throughout the last 15 years the Chesapeake Bay has suffered from elevated levels of pollution. Nitrogen and phosphorous from wastewater treatment plants, farmland, air pollution, and development all lead to reduced water clarity and lowered oxygen levels, which harm fish, crabs, oysters and underwater grasses (Key Commission Issues 1). There are other types of pollution in the bay such as toxic chemicals, but because nutrient pollution is the most significant and most widespread in the Bay its effects are the most harmful to fisheries. Ni trogen and phosphorous fuel algal blooms which cloud the water and block sunlight from reaching underwater grass beds that provide food and habitat for waterfowl, juvenile fish, blue crabs, and other species (Blankenship 11-12). Algae plays a vital role in the food chain by providing food for small fish and oysters. However, when there is an overabundance of algae it dies, sinks to the bottom of the Bay, and decomposes in such a manner that depletes the oxygen levels of the Bay (11). The reduced oxygen levels in the Bay reduce the carrying capacity of the environment and these â€Å"dead areas† sometimes kill off species that can not migrate to other areas of the Bay, such as oysters (11). Increased abundance of algal blooms also led to the overabundance of harmful and toxic algae species and microbes such as the microbe Pfiesteria, which was responsible in 1997 for eating fish alive and making dozens of people sick (12). The heightened awareness of diseases that can be cont racted through consumption of contaminated fish also has an economic impact. Therefore, the excess levels of nitrogen and phosphorous have fueled an overabundance of algal blooms, which has reduced water clarity and lowered oxygen levels, affecting many species within the bay and ultimately the industries that rely on these species. The signing of the 1987 Chesapeake Bay Agreement marked the first joint vent... ...able: http://www.virginia-beach.va.us/cityhall/planning/cbay.html (4 Nov. 1999). â€Å"Fish Health in the Chesapeake Bay: †¦Estimate of Seafood History Losses.† Available: http://www.mdsg.umd.edu/fish-health/pfiesteria/pfeconomics/sld005.html. (22 Nov. 1999). Glibert, Patricia M. and Daniel E. Terlizzi. â€Å"Nutrients, Phytoplankton, and Pfiesteria In the Chesapeake Bay.† Available: http://www.arec.umd.edu/policy/Pfiesteria/terlizzi/terlizzi.htm (22 Nov. 1999). â€Å"Impacts of Diseases and †¦ase Resistant Oysters† Available: http://biology.uroregon.edu/classes/bi130/webprojects/15/oyster.html (22 Nov. 1999). â€Å"Key Commission Issues† Available: http://www2.ari.net/cbc/old/cbc_issu.htm (4 Nov. 1999). Lipske, Michael. â€Å"Getting to Know You† National Wildlife, v33. (1995): 24-29. Parker, Doug. â€Å"The Economic Costs of Implementing the Maryland Water Quality Improvement Act of 1998.† Available: http://www.arec.umd.edu/policy/Pfiesteria/parker/parkertext.html (22 Nov. 1999). Santopierro, George D., and Leonard Shabman. â€Å"Can Privatization Be Inefficient?: The Case of the Chesapeake Bay Oyster Fishery.† Journal of Economic Issues, v26 n2 (June 1992): 407-415.

Consulting for a struggling firm Essay

Introduction All organizations in the modern society are faced with challenges in economic management. As a psychologist working for a consultation firm, I meet a CEO in dire need of help on future sustainability of works on stress management, diversity and motivation. Therefore, this paper seeks to analyze how the various challenges in the workplace can be mitigated so as to increase efficiency. Stress management Stress refers to a situation in which one feels pressure and cannot cope with it successfully, and results in varied physical, mental and emotional reactions. Stress management thus refers to techniques and therapies often with the aim of controlling a person’s levels of stress. In an organizational context the manager is charged with the responsibility for ensuring that each employee can work without pressure. Stress is common in very many workplaces, employees and the managers both experience stress. In workplaces, stress is often caused by lack of communication, career and job ambiguity, financial stress, personal stress, interruptions and strictness by the managers and poor working conditions. Stress management is important in a firm, in this case a firm that is struggling and needs to pull through. Work stress in this case is an important issue because it has financial impacts on the business, it is also important on legal obligations and organizational effectiveness. Practice of stress management in companies helps in the efficiency of the organization as the employees are able to know their roles thus doing tasks efficiently and thus making the organization effective, the employee’s working conditions are improved also,   as stress management helps to identify some of the problems that the employees suffer. Stress management boosts the morale of the workers as they are able to work with ease; it also ensures that equal opportunities in terms of promotion and training are given out fairly (Ivanko, 2013). In a situation that employees have been laid off, and some are remaining in the organization, those remaining are affected, and they develop stress. The type of situation can be achieved by applying ways of managing stress. One way would be to encourage the remaining employees to adopt a positive attitude and mindset towards their stress. Another way would be to emphasize on acceptance that some things cannot change; once something has happened we should accept and move on. Creation of time for recreation would also help to alleviate stress among employees; alterations of situations can also be an excellent remedy in doing away of stress. After layoffs the firm can rebuild by assessing and looking at the weaknesses and failures and try to address them, the organizational structure should also be changed, the employee’s working conditions and problems should also be addressed. A market research should be done to ensure that the requirements of the clients are identified, and more sensitization in terms of advertising should be done to get more clients and popularize the firm. Motivation Motivation in a firm often refers to an act of providing a reason to act in a particular manner. It can also refer to internal and external factors that stimulate and give desire to perform a task or job continually. Motivation is relevant to solving most problems in firms, it borrows a lot from   Ã‚  psychology, knowledge of work psychology is critical to the use of motivation. Motivation of workers is essential in building relationships with coworkers, improvement of production, time management among others things. The motivation of employees contributes to growth and development of the organization. In a situation whereby some workers have been laid off motivation can be used to enable the remaining workers to work harder and lift the body. Some of the ways of motivating employees include: increasing salaries of workers, creating   safe and friendly environment for the workers, recognizing and rewarding those employee’s that perform, developing good relations with workers, use of food as incentives, holidays to performing employee, introducing overtime in which the employees are paid for working for extra hours (Ivanko, 2013). This kind of measures can be taken in instances where there has been a laid off of workers as this helps the remaining workers to heal and ensure that the organization becomes more fruitful and able to cope with market dynamics. Diversity Diversity can take many forms; it includes differences in race, ethnic identity, gender, education, socio-economic levels and sexual orientation. The amount of diversity in organizations is often increasing; thus the need to manage diversity is essential. The number of aging workers is growing and there are more people from diverse backgrounds. In most organizations today, there are an increasing number of joint ventures, mergers and strategic alliances uniting people from different organizations and cultures. Handling diversity is an important obligation of leaders in contemporary times. A leader has to find the balance between promoting diversity and building a strong organizational culture. Managing diversity is important as it ensures creativity and innovation among the workers, it also helps in forming and maintaining better interpersonal relationship between workers, managing of diversity performance of the people for the value of all shareholders, it also helps in recruiting and retaining of employees (Bogda L. , 1998). Organizations have very many people of different backgrounds, in a case where the group has decided to lay off some workers; it’s of importance that the leader manages diversity for the remaining workers. Diversity can be accomplished by the following: by explaining the benefits of diversity to the organization, encouraging and other people who seek to promote tolerance of diversity, discouraging use of stereotypes to describe other members of the group, promoting respect for individual differences. Leaders can organize training programs that seek a better understanding of diversity problems and cultural differences and how to respond to them in the workstation. Conclusively, there is often a moment that an organization struggles and adverse measures are taken to laying off of employees. The body can bounce back by using motivation, stress management and managing diversity this would help in healing and development of a successful organization. References    Bogda, L. (1998). Diversity and Organizational Change. Retrieved December 12, 2014, from bogda.com: http://www.bogda.com/articles/DiversityandOrgChange.pdf Ivanko, S. (2013, September). Organizational Behaviour. Retrieved December 12, 2014, from uni-lj.si: http://www.fu.uni-lj.si/fileadmin/usr-files/Mednarodna_pisarna/ORGANIZATIONAL-BEHAVIOR-2013.pdf      

Mariano Escobedo essays

Mariano Escobedo essays Mariano Escobedo was a healthy man he was my Grandparents great great grandparent. He was a Mexican General from Mexico. He wanted to govern Mexico, he fought against dynasty and he won. Escobedo fought against the French Invasion in Mexico to govern Mexico. He became a great general who fought against Napoleon III (French.) In Mexico City airport and in Monterey his name is printed and also in some streets of difference parts of Mexico. Mexico had borrowed money from England, France and Spain. In 1861 representatives from this countries got together in London to find a way to get Mexico to pay this countries. Troops from this three countries went to Veracruz in 1862. They were welcomed from representative from Mexico. The general Juan Prim, from Spain accepted the way Mexico was going to pay little by little so as England. The representative from France is not accepted he wanted the money and ordered his troops to prepare to fight. The government of Benito Juarez organize the defense. He made in charge the general Ignazio Zaragoza to get to Puebla and fight with the French. They attacked each other in the " Fuertes de Loreto y Guadalupe. The troops of Zaragoza, helped from the Indians Zacapoaxtla. In 1862of Mat 5 they won against the French. The emperor from France, Luis Napoleon Bonaparte, wanted to extend his powers in America and in Asia. He dreamed to form a great empire. Mexico took advantage of that situation to peek an European emperor to govern Mexico and to stop the politic anarchy. Luis Napoleon made them recommend Fernando Maximiliano de Habsurgo, brother of the emperor Maximiliano accepted his embarkation to Mexico but with her wife, the princess Carlota Amalia de Belgica. Luis Napoleon send his army to wish napoleon luck. Austria and Belgica also send troops. The emperors arrived to Mexico at the end of 1864. In Veracruz, Puebla were great big welcomes. ...

How to Use the Partitive Genitive Case in Latin

How to Use the Partitive Genitive Case in Latin The  genitive case  is most familiar to English speakers as the case in which nouns, pronouns and adjective  express possession, says the clear-thinking  Classics Department  at the Ohio State University. In Latin, it is used to indicate relationships that are most frequently and easily translated into English by the preposition of: love of god, the driver of the bus, the state of the union, the son of God. In all these instances, the prepositional phrase modifies a noun; that is, the prepositional phrase acts like an adjective: love of God equals Gods love equals divine love. Genitive Genetic Relationship The last example shows the genetic relationship that gives the genitive case its name. Linguists who have studied this case have concluded that it is a convenient way of indicating relationships between nouns, or, put in more grammatical terms, the genitive case turns any noun into an adjective. There are several categories of the genitive, depending mainly on their function. The partitive genitive is one of these categories. Partitive Genitive: How It Works The partitive genitive case, or the genitive of the whole, shows the relationship of a part to the whole of which it is part. It starts with a quantity, such as a numeral, nothing (nihil), something (aliquid), enough (satis) and the like.  This quantity is part of a whole, which is expressed by a noun in the genitive case. The simplest example is  pars civitatis   part of the state. Here, of course, the state (civitas) is the whole, and this party is the part (pars). This [is] a useful reminder that the English expression all of the state is  not  partitive, since all is not a part; consequently, you cannot use the genitive in Latin here, only an adjective:  omnis civitas, says OSU. If you have a part of something, the thing  thats the whole is in the genitive case. The fractional part can be a pronoun, adjective, noun or numeral designating quantity, with a noun or pronoun showing the whole to which the some (or many, etc.) belongs. Most of the following examples show the part in the nominative case. The whole is in the genitive since it signifies of the whole. The English translation may or may not have a word like of marking the genitive case. Partitive Genitive: Examples satis temporis   enough of time or enough time.nihil clamoris   none of the shouting or no shoutingnihil strepitus   none of the noise or no noisetertia pars solis   the third part of the sunquorum primus ego  sum   of whom I am chiefquinque millia hominum   five thousand [of the] menprimus omnium   first of all (with omnium in the genitive plural)quis mortalium   who of mortals (with mortalium in the genitive plural)nihil odii   nothing of hatred (with odii in the genitive singular)tantum laboris   so much work (with laboris in the genitive singular) vs. tantus labor so great a labor which has no genitive and therefore is not the partitive genitivequantum voluptatis   how much delight (with voluptatis in the genitive singular)

Netflix Ipo Essay Example

Netflix Ipo Essay Example Netflix Ipo Paper Netflix Ipo Paper Netflix launched its website in April of 1998, offering customers online rentals and sales of DVDs. Netflix experienced rapid growth; revenues grew from USD 1. 4 million in 1998 to USD 152. 8 million in 2002. Netflix’s strong record of executing on its core principals – value, convenience and selection – enabled the company to win subscribers at a much faster rate than directly competing online services. After Netflix had its first positive cash flow in the fourth quarter of 2001; Company’s management decided to embark in a second IPO process. Netflix’s management decided to pursue a public offering given the need to raise additional capital in order to sustain and grow the business. However, there are some internal and external factors that can affect a company’s decision to pursue a public offering: The main internal factor is the funding concern, in order to sustain and grow the business, a company has different alternatives of funding; an IPO allows a company to raise equity, which does not negatively impact the leverage ratios. The market environment. This external factor affects the price of the share and the underwriting offers that a company can obtain through a public offering process. Selecting a lead underwriter is an important decision for a company who is pursuing an IPO; it is important that the underwriter offer the company what they are looking for in terms of price and dollar amount. The company is looking for an underwriter who has a good reputation, set of skills and ability to complete the underwriting. The amount of leverage that the company has towards ensuring the underwriter follows through on the company’s expectations is determined by how much business the company can bring after the offering; in other words, the more potential businesses the company can bring, the more the bank is going to take care of them. One important part of the offering process is the writing of the Prospectus, we consider that this document should be written by the underwriter, because of their expertise and distance from the company while the company should approve the final document before presenting it to the audience which are potential investors. The issuance of directed shares can be used to benefit other lines of business and should not be used. The underwriter can use these directed shares to persuade companies to offer them potential future business, which would be a conflict of interest. While the impact is not harmful to the IPOing company, it is harmful to potential investors because the fairness of the markets has been removed. If the company does decide to offer directed shares, they should be issued to the entire group and percentages should be determined by some rational measure. Let’s take vendors as an example. If the company is going to provide directed shares to their vendors, the company should offer directed shares to all of their vendors and the percentages should be determined by something like percentage of sales. The main group that should receive directed shares is the employees of the company. The employees are stakeholders of the company and they should be rewarded for their efforts in helping to get the company to this point. If Netflix’s management decides not to inform the â€Å"popcorn incident† to Merril Lynch, it could affect the trust with the investment community. We consider that the company should inform Merril Lynch about this incident, asking them for a delay in the IPO process; we consider that while this could affect the IPO process, it is a short term impact, but the loss of trust with the investment community could be a lifetime impact. The next step for the management is to call the Popcorn Company, explain the situation and ask them for a hold in the launch of the new product to the market; in parallel the company can fix the problem with the movie companies in order to get the licenses to commercialize the products. The movie companies may be able to give Netflix a small bye on this if Netflix can give them something in the future; if the management solves this problem, than it is a non-impact to the pricing discussion. The company’s and the underwriter’s incentives when it comes to the pricing of the offering are different. Company management wants the highest possible price; however the underwriter wants to complete the sale of all shares, so a lower, more confident price is better for them. The manager can influence the pricing decision during the presentations in the road show; given that the pricing is ultimately decided by market demand; so if the management wants to improve pricing, they should do a good job on the road show to demonstrate the potential of the company.

Adam Smith vs. Karl Marx Essay Example | Topics and Well Written Essays - 750 words

Adam Smith vs. Karl Marx - Essay Example Karl Marx was a political scientist and economist from Germany who lived in the years 1818 to 1883. He analyzed capitalism in a revolutionary and pessimistic viewpoint. Marx concept was that the capitalist set the means of production while the laborer created the value of the products. Marx argued that capitalist’s profits are as a result of labor exploitation. It implies that, workers are paid low salaries compared to the value they create on the products to create profits. He, therefore, disliked the organizations that were deemed as profit- oriented (Landauer 356).  Marx argued that labor exploitation is the struggle and future downfall of the capitalism practices. To Marx, the tension between the workers and capitalists will intensify over time as the business grows (Landauer 356). The growth of the tension is due to large outfits’ inherent efficiency and their ability to go through the ever-ending system crisis. Marx argument was that the world is moving to a sys tem of two classes. The classes are few capitalists that are wealthy and a mass of underprivileged, unpaid workers. He, therefore, predicted capitalism fall and society movement towards communism. Marx described communism to be a scenario in which the workers will own the production means. They will therefore not exploit their labor in return for profit. His thinking affected several societies, including the Union of Soviet Socialist Republics in the 20th century.  Application of Marx theory in real life situation has led to two main deficiencies.

The Role of Multicultural Education in Citizenship Essay

The Role of Multicultural Education in Citizenship - Essay Example This is an interesting single case study, but it would be risky to extend any major conclusions to other contexts. A further weakness of this article is that the theory is largely separate from the observation. The lengthy introduction sets out the findings of previous scholars, but it is not always obvious how this relates to the particular teacher being studied in the article. The hybrid method of academic argument followed by snippets of interview leads to an implied devaluation of the teacher’s words as mere anecdote. It is as if the teacher is cited as an illustration of someone else’s theories, rather than a speaker and thinker in her own right. For this reason the article presents a strange aura of superficiality and the fact that the author is male and the subject is female creates a certain gender specific tension as well. This article shows a potential of researcher bias due to strong tone of advocacy that emerges. The choice of method leaves the male professo r in control of the way a single female teacher’s voice is edited and presented. Status and gender issues make this a potentially unfair representation, and adding gender hierarchies to the obvious racial hierarchies that are discussed in the article. In summary, then, this article is clearly knowledgeable about theory, but somewhat inadequate in explaining the connection between theory and practice. Its focus on one researcher and one teacher makes it also very limited in scope and open to the charge of bias. Article 2 (Mathews and Dilworth) This article addresses three main questions relating to the way that preservice teachers view multicultural citizenship, namely 1) the type of citizen that preservice teachers aspire to promote in their future classrooms; 2) the way that preservice... This paper approves that the innovative approach used in the Cutri article on narrative as a method of teaching and learning multicultural citizenship is applicable is a good example of new thinking being applied to a familiar context. It stands out as a new technique among many old and tired approaches, and although it may not suit everyone, and might seem suspect for researchers who prepare quantitative approaches and more triangulation from different perspectives, it can safely be recommended as an exciting tool to help trainee teachers set out their own narrative starting points and begin to engage students with the personal and the emotional aspects of the subject. This essay comes to the conclusion that the close study of the three articles highlighted at the start of this paper has led to a greater appreciation of the difference between surface knowledge and deeply held beliefs. All three studies provide useful insights into the teaching of multicultural citizenship, and especially into the methods that should be used to train teachers of this discipline. The authors all stress the need for preservice teachers and teachers and also teacher educators to engage in a process of continuous reflection and application of theories to the teaching situation. It is clear that the majority of teaching and research in the field of multicultural civilization in the United States is still being conducted by white people and that engagement with some of the issues at a deep level is not taking place in many training programs. Greater familiarity with international scholarship, and a willingness to try new methods are two recommendations which would go a lo ng way to remedying the narrow focus of these American studies.

Analysis Of GE, Clean Energy Group and Yingli Solar Energy Company Essay

Analysis Of GE, Clean Energy Group and Yingli Solar Energy Company Profiles - Essay Example A number of studies have been taken up to assess the actual achievability and practicability of the renewable resources of energy. Issues have been raised about the concerns on sustainability of the alternative energy resources. One of them is the requirement of a detailed analysis of the suitability of the diverse technologies and expertise in the sector and efficient utilization of the by-products, and managing of natural resources. This also consists of nature conservation issues, pollution control, demand supply of energy and the social acceptance by the society. The use and viability of this technology cannot be evaluated until it has been put to use on a large and long-term scale and assess the results in the social and environmental contexts. Moreover, the complex social systems may lead to uncertainty in the minds of the project planners which might be enhanced by the lack of flexibility of the technology system to meet the demands of the social, economic systems of the socie ty. However, all these concerns related to the development of the clean energy sector will not possibly hamper the continuing growth and production in the sector and the increasing importance of maintaining sustainability in the business sector. The renewable energy sector has continued to grow along with the climate change and control issues, high rise in the prices of oil, increasing international community support and encouraging energy regulation laws. Studying the various, environmental social technological and economic benefits arising from the sector, there are a number of them which can be counted upon. Sustainable clean energy business contributes to the environment with reduced carbon emissions, deceleration in the climate, reduced flood rate, improved air quality and landfilling prospects, (Scott, 2010). Among the economic benefits, the chances of job creation, manufacturing and research – development expertise, increased supply as compared to the existing levels, higher investment in the sector are some of them. Among the social issues that may be benefitted due to a long-term sustainable clean energy business are direct employment, retention of population in remote cities, increase in the skill and expertise of the remote population that gets employed and higher quality of life. Challenges to the Clean Energy Sector In this section, the challenges to the clean energy sector shall be studied. In spite of the fast growth of the renewable energy resources, there exist many challenges. Some of them are discussed below – Reliability?†¢ The most popular renewable sources of clean energy – wind and solar are variable in nature and cannot be a reliable round the clock resources.

Roles of School Administrator Essay Example | Topics and Well Written Essays - 250 words

Roles of School Administrator - Essay Example An administrator should prioritize through zeroing on the most integral activities for bringing all learners to high levels of achievement. This can be done by setting clear expectations, deciding on a planning system, and taking stock of the daily school operations in order to determine the most urgent and effective (Hopkins, 2000). Administrators should ensure they build a positive aspects of the teaching ability of the teachers. This is important because it helps them to know where teachers should improve. The objective should be to create a relationship with all faculty members through offering advice and ideas on the way to improve wherever refinement is needed. The staff should always be encouraged to find a better way and continue in their pursuit of quality education. It is vital that an administrator keeps proper record so that each time a faculty is conducted, it should be noted on the date and a brief summary of the observation. This helps in cases where a teacher has areas of inadequacy and refuses to make improvements in those areas (Hopkins,

Fujiwara Clan and Governance Essay Example | Topics and Well Written Essays - 1000 words

Fujiwara Clan and Governance - Essay Example Although the history of japan is often illustrated by institutional progress, it has had some significant turning points. As such, japan has had a long interesting history. Archeological evidence implies that people have resided in the region since the prehistoric era. This vast history is divided into groups so as to make it more manageable. These periods often have varying lengths i.e. decades to centuries. The Fujiwara family dominated japan between794 to 1160. There is no record of a specific starting year of their dominance in the government. To ensure they ruled the state of japan, they made emperors to be just puppets. An increase in population, food production decline and competition for resources saw the decline of the Fujiwara family and other great families. These problems engineered the occurrence of various military disturbances. The Taira and Minamoto who were Fujiwara family members attacked each other over land issues. This led to the collapse of the Fujiwara family as they created rival regimes. The In no cho took over from the Fujiwara clan. They slowly replaced the Fujiwara court members by the Minamoto family. Unlike previous regimes where civil authority controlled the government, military might determine the strength of the government. Despite its eventual decline, the Fujiwara clan was very successful in governance as a result of the factors highlighted herein.

Roles of School Administrator Essay Example | Topics and Well Written Essays - 250 words

Roles of School Administrator - Essay Example An administrator should prioritize through zeroing on the most integral activities for bringing all learners to high levels of achievement. This can be done by setting clear expectations, deciding on a planning system, and taking stock of the daily school operations in order to determine the most urgent and effective (Hopkins, 2000). Administrators should ensure they build a positive aspects of the teaching ability of the teachers. This is important because it helps them to know where teachers should improve. The objective should be to create a relationship with all faculty members through offering advice and ideas on the way to improve wherever refinement is needed. The staff should always be encouraged to find a better way and continue in their pursuit of quality education. It is vital that an administrator keeps proper record so that each time a faculty is conducted, it should be noted on the date and a brief summary of the observation. This helps in cases where a teacher has areas of inadequacy and refuses to make improvements in those areas (Hopkins,

To what extent do you agree with free market economics being more Essay

To what extent do you agree with free market economics being more effective than a mixed economy - Essay Example The government apart from refraining from regulating the market also does not provide any services and leaves this to the private sector. This kind of market has received both positive argument and negative ones (Hodgson, 2006). Those who do not feel that this kind of market economy can be efficient argue for a mixed market economy which includes the role of the government both as a regulator as well as a player in the production of goods and services. This mixed market is also called Keynesian economics, named after the famous English economist who helped in the rebuilding of the American economy during the great economic recession of the 1930s in the United States of America. The mixed market system features the government as a referee and prefect in the economy, providing for regulation and control as much as is needed. It also features the government as the provider of the most crucial and basic needs and services to the public. This is done to make sure that these are not capita lized. These services include education especially at elementally level, health and security. In a mixed market economy, the private sector is involved in the greater part of the production, but under the watch of the government. There are a number of advantages with regard to the mixed market. To begin with, the fact that the government is involved in the production of essential services is important in order to provide for the protection of those who may not afford to get these services from the capitalist market. The mixed market also regulates the private sector for the purposes of protecting consumers against unfair exploitation. Those who argue in favor of the mixed market argue that the belief by free-markets enthusiasts that the market has its own way of regulating itself through the laws of demand and supply (competition) are fundamentally wrong. This argument against the efficacy and

Analyse the dramatic Essay Example for Free

Analyse the dramatic Essay Analyse the dramatic importance of the end of act one of  A View from the Bridge  Aurther Miller is play writer of A View from the Bridge who uses a range of technique to illustrate the importance of the play, such as stage directions and language.  At the end of act 1, Miller creates an atmosphere that Alfieri is weak where he says I was so powerless indicating that even a lawyer who should be confident on what to do, was clueless. Further to this there is a suspense tension on what will happen next, where Alfieri visits an old lady to question about the fate of Eddie Carbone. The last statement of Alfieri after his discussion with the lady ends with, And so I waited here which gives a sense to the audience that Alfieri himself fears that a disaster will happen and so we are curious and anxious to find out.  In the next part of the extract, it opens up as they are a big ecstatic family, as normally Catherine boosts about Rodolfo about what he did. They went to Africa once. On a fishing boat (Eddie Glances at her) its true Eddie representing Eddie doesnt really want to know what they did. As the family talk about what the 2 submarines, Rodolfo doest want to contribute in the conversation therefore he sits near Catherine while she is reading a magazine On stage while they were Talking about fishing boats Eddie especially concentrates on what Marco says and replies back to him in a very quick speed, Marco: sardines. Eddie: sure. (laughing) how are you gonna catch sardines on a hook? Seeing that the 2 boys were having an argument. Beatrice steps in and tries to change the subject.  The mood and atmosphere is very cheerful as Catherine goes on about Rodolfos adventure. Eddie then jokes about that they paint oranges to make them look like oranges Marco then reacts to eddies joke thinking that he is telling the truth. Rodolfo is helping his brother by changing the subject lemons are green there becomes a conflict between Rodolfo and Eddie .he therefore reveals his ignorance for Christ sake

Propolis and Calcium Hydroxide Against Enterococcus Faecalis

Propolis and Calcium Hydroxide Against Enterococcus Faecalis Title: An in-vitro comparison of endodontic medicaments Propolis and Calcium hydroxide alone and in combination with Ciprofloxacin and Moxifloxacin against Enterococcus faecalis. Abstract: Aim: To evaluate and compare the antimicrobial properties of Propolis and Calcium hydroxide alone and in combination with Ciprofloxacin and Moxifloxacin against Enterococcus faecalis (E. Faecalis). Materials and Methods The laboratory study was carried out to test the effectiveness of propolis and calcium hydroxidealone as well as in combination with the established endodontic medicaments (Moxifloxacin and Ciprofloxacin). The various combinations were : Group1: Propolis, Group 2: calcium hydroxide, Group 3: Moxifloxacin, Group 4: Ciprofloxacin, Group 5: Propolis + Moxifloxacin, Group 6: Propolis + Ciprofloxacin, Group 7: Calcium hydroxide + Ciprofloxacin, Group 8: Calcium hydroxide + Moxifloxacin. The efficacy of these medicaments was tested by checking for the zone of inhibition for the specific strain (ATCC 29212) of Enterococcus faecalis at different time intervals i.e. 24hr, 48hr and 72hr. Results Mean zone of inhibition was maximum in Group V (21.94Â ±4.26) followed by Group VI (18.80Â ±1.93), Group I (18.71Â ±4.26), Group VIII (15.88Â ±2.59), Group III (14.91Â ±1.00), Group VII (14.57Â ±2.17), Group IV (13.91Â ±1.00) and minimum in Group II (12.89Â ±2.14). Mean zone of inhibition were found to be maximum at 72 hr and minimum at 24 hr. At all time intervals, the combination of Propalis with Moxiflocacin showed the maximum antimicrobial efficacy. Conclusion: On the basis of the results of the present study it can be concluded that Propolis and Calcium hydroxide show synergistic effect with Moxifloxacin and Ciprofloxacin against E. Faecalis. Propolis in combination with antibiotics and alone is more effective than calcium hydroxide. Clinical significance: Since propolis alone and in combination with antibiotics was observed to be more effective than calcium hydroxide, propolis can be considered as an intra canal medicament when compared to traditional calcium hydroxide. Key words: Calcium Hydroxide, Ciprofloxacin, E. fecalis, Intra canal medicaments, Laboratory research, Moxifloxacin, Propolis. Introduction: For successful endodontic treatment, proper diagnosis, thorough chemo-mechanical preparation, and three dimensional obturation of root canal space are paramount. Regardless of these treatment protocols, bacteria can still persist in the complex anatomy of root canal space, thus the ability of intra canal medicament to restrain or eliminate residual bacteria and prevent re-infection may play an increasingly important role in achieving and maintaining a higher success rate of root canal treatment.1 The most common species recovered in over one-third of the canals of root filled teeth with persisting periapical lesion is the Enterococcus faecalis (E. Faecalis). Enterococcus faecalis is a gram positive, facultative anaerobic, coccoid bacteria. Medicaments are recommended to eliminate remaining microbes in the root canal, dentinal tubules, accessory canals, canal irregularities (such as fins, transverse anastomoses, apical deltas and other ramifications) and in the periapical/periodontal tissue to reduce periapical inflammation, encourage periapical healing, eliminate apical exudates, control inflammatory root resorption and avert contamination of the canal between appointment.2 Earlier strong intracanal antiseptics such as formacresol and camphorated parachlorophenol were used, but due to their detrimental effects on the connective tissue, their use is limited, now-a-days. The excellent biologic and antimicrobial properties of calcium hydroxide have made it the preferred choice for intracanal dressing of the infected roots canals.1 Calcium hydroxide has been added to several endodontic sealers to improve their biological properties and to augment their antibacterial activity. When used as an intracanal medicament, the most important property of calcium hydroxide is its strong antimicrobial activity. Its high pH alters the biological lipopolysaccharides in the cell walls of Gram-negative species, there by inactivating the membrane transport mechanisms.3 Propolis is a resinous product rich in flavanoid. It has been used as in a number of ways; an anticaries agent, for dentinal hypersensitivity as sealant, storage medium for avulsed tooth, for pulp capping. Propolis is ten times less cytotoxic than calcium hydroxide and has a distinguished antibacterial, antifungal, antiviral, immunomodulatry, antioxidant effect. Recent studies have reported that propolis is more effective against resistant microorganisms and is biocompatible. In endodontic procedures antibiotics can be used as an important aide but their ineffectiveness through systemic route of administration has led to the intra canal application, in order to increase their efficacy.1 Moxifloxacin and Ciprofloxacin are members of the quinolones. Among the drugs commonly used for endodontic infection, ciprofloxacin is indicated due to its efficient action against oral anaerobes, gram +ve aerobic microorganisms (Staphylococcus aureus, S. epidermidis, Sptreptococcus spp) and gram -ve enterobacteria (Escherichia coli, Enterobacter spp and Pseudomonas), which show MIC90 between 0.015 and 2 ÃŽ ¼g/mL respectively. All the species of streptococcus are sensitive to concentrations between 1.0 and 8.0 ÃŽ ¼g/mL; Other Streptococcal species like S. aureus and S. epidermidis are also sensitive to concentrations between 0.25 and 1.0 ÃŽ ¼g/mL.4,5 Ciprofloxacin has antimicrobial activity against most Gram-negative bacilli and cocci but limited activity against most Gram-positive organisms. Moxifloxacin is a new fluoroquinolone with expended spectrum of activity, including anaerobes and Gram positive organisms, especially the multi-resistant ones.3,6-10 Moxifloxacin has been found to be one of the most active antibiotics against E. faecalis with the lowest MIC50 and MIC90. From the previous literature it has been proved that ciprofloxacin to be more active other antibiotics.3,6,8,9,11 The usage of local antibiotics in endodontic treatment was advocated by Grossman in 1951. Since then numerous antibiotics have been used during endodontic treatment. The antibiotic combination has proved advantageous with the usage of triantibiotic paste.12 The laboratory study was carried out to test the effectiveness of propolis and calcium hydroxidealone as well as in combination with the established endodontic medicaments (Moxifloxacin and Ciprofloxacin). Materials and method: The study was carried out in the Department of Conservative Dentistry and Endodontics and Department of Microbiology at Saraswati Dental College and Hospital, Lucknow, India. Propolis (Hi-Tech Natural product India Ltd), Calcium Hydroxide (Vishaldentocare), Moxifloxacin (Avelox), Ciprofloxacin (Ciplox-500) were used in this study. They were distributed in different groups as presented in table no 1. The efficacy of these medicaments was tested by checking for the zone of inhibition for the specific strain (ATCC 29212) of Enterococcus faecalis at different time intervals i.e. 24hr, 48hr and 72hr. Specific stain (ATCC 29212) of Enterococcus Faecalis was procured and grown on Brain Heart Infusion Broth (BHI) under favorable temperature overnight and the growth was checked by changes in the turbidity at 24 hours. Blood Agar Media Plate was inoculated with Enterococcus faecalis (ATCC 29212) by spreading the culture over the surface of the plate with a swab. Intermittent scraping of the culture was done at different sites to make wells for the placement of experimental intracanal medicament. The experimental groups were used in their minimum inhibitory concentration (MIC) against Enterocaccus faecalis (ATCC 29212). MIC of the various antibiotics used in this study was – Propalis 340 Â µg/mL, Calcium hydroxide 2500 Â µg/mL, Moxifloxacin 2 Â µg/mL and Ciprofloxacin 8 Â µg/mL .2,13 Propolis, Calcium hydroxide and antibiotics were used as a paste in which saline acted as a vehicle. Propolis and Calcium hydroxide were mixed separately with saline on a glass slab, with the help of cement spatula, to prepare the paste. For obtaining the antibiotic paste, tablets of Ciprofloxacin and Moxifloxacin were crushed in mortar and pestle and then mixed with saline on glass slab with cement spatula. Plates were subjected to incubation at 30 Â °c for 24hrs, 48 hrs and 72 hrs (Figure 1) and the diameter of the zones of inhibition were measured in millimeters with HiAntimicrobial Inhibition Zone Scale tm C (HiMedia Laboratories Pvt Limited, Mumbai) (Figure 2). The observations were subjected to descriptive and inferential (ANOVA) statistical analysis. Results: Table 2 shows the mean zones of inhibition in different groups irrespective of time. Zones of inhibitions ranged from 10 mm (Group II) to 28 mm (Group VI). Mean zone of inhibition was maximum in Group V (21.94Â ±4.26) followed by Group VI (18.80Â ±1.93), Group I (18.71Â ±4.26),Group VIII (15.88Â ±2.59), Group III (14.91Â ±1.00), Group VII (14.57Â ±2.17), Group IV (13.91Â ±1.00) and minimum in Group II (12.89Â ±2.14). Table 3 shows the ANOVA applied in different groups. Statistically, intergroup differences were significant (p Group I ~ Group VI > Group VIII ~ Group III ~ Group VII ~ Group IV ~ Group II. Table 4 shows the mean zones of inhibition at different time intervals in different groups. Mean zone of inhibition were maximum at 72 hr and minimum at 24 hr, and the intergroup differences were significant. At all the time intervals, group V showed the maximum antimicrobial efficacy. Discussion: Intracanal medicaments are used to eliminate remnant microbial flora after a thorough chemo-mechanical preparation of root canal and hasten the healing process. Propolis which is a very effective natural product and has been a part of popular medicine since thousands of years 14, 15. The color of Propolis is dark. Made from material collected from plants by bees, It is used against pathogenic microorganisms. Due to its anti-inflammatory properties it is effective against infection, rheumatism, muscular and articular diseases, and other types of inflammation.15-17 The chemical composition of propolis varies widely. Over 200 substances have been identified in the various varieties of propolis extracted from various geographical regions, which includes phenolic acids, esters, flavonoids, alcohols, aromatic aldehydes, fatty acids, amino acids, vitamins and minerals. Special emphasis is given to the flavonoids and phenolic acids mainly responsible for its biological activity. Propolis exh ibits antimicrobial and anti-inflammatory properties, that why it has been suggested as a root canal medicament.15,18,19 Calcium hydroxide, a white, odorless powder is one of the main stay of the root canal medicaments. It has a low solubility in water, insoluble in alcohol and a high pH. The extended clinical action of calcium hydroxide is well known. It is biocompatible, and has antimicrobial and anti-inflammatory action; it also activates the alkaline phosphatase enzyme, which in turn induces mineralized tissue formation and aid in the repair process. Chemically it is classified as a strong base, and when it is associated with a suitable vehicle produces an alkaline paste. Calcium hydroxide paste dissociates into calcium and the hydroxyl ions, the resulting environment will turn alkaline because of hydroxyl ions, due to this action it is a very good root canal dressing material. For the destruction of pathogenic bacteria of root canal and dentinal tubules , these hydroxyl ions should be capable to diffuse in dentin and persist in pulp tissues in a maximum concentration to produce the pH level requir ed 15,20. Moreover various other studies reported by Molander A. and Tirali et al found CaOH to have synergistic effect with other endodontic medicaments.21,22 Ciprofloxacin, a second generation fluoroquinolone antibiotic, inhibits bacterial DNA synthesis. In dentistry, it is used as a broad spectrum antimicrobial and is effective against gram negative bacteria (staphylococcus and pseudomonas). One of the important drugs of fourth-generation syntheticfluoroquinolone is Moxifloxacin. It has superior activity against Gram+ve bacteria and anaerobes as compared to levofloxacin and ciprofloxacin.Moxifloxacin is abroad-spectrum antibioticthat is active against bothGram-positiveandGram-negativebacteria. It inhibitsDNA gyrase, enzyme which inhibit cell replication by separating bacterial DNA 12. First and second generation fluoroquinolones selectively inhibit topoisomerase II ligase domain, which leaves the two nuclease domains intact. This particular modification, coupled with the stable action of the topoisomerase II within the cell of bacteria through nucleasic activity of the intact enzyme leads to DNA fragmentation. The further generations of fluoroquinolones i.e third and fourth acts selectively for topoisomerase IV ligase domain, which makes them more effective against gram positive coverage.12,23 Antimicrobial property of propolis is due to inhibition of bacterial DNA-dependant RNA polymerases. Synergism amid antibacterial agents and propolis has been observed by Madarova L in 1980. Grange JM and Davey RW found that there was synergism between antimicrobial drugs and propolis against S. aureus particularly those which interfere with bacterial protein synthesis.24-26 Noori Al-Wahi found propalis to have synergistic properties with honey.27 Although calcium hydroxide does not bond to dentin, it does have antibacterial property. Its mechanism of actions is through the ionic break down of Ca(+) and OH(-) ions and corresponding effects on vital tissues. Protein denaturation and damage to DNA and cytoplasmic membranes are responsible for fatality of calcium hydroxide on bacterial cells .28 E fecalis appears to be highly resistant to the antimicrobial effect of calcium hydroxide. Evans et al. reported that at pH of 11.1, E. faecalis was resistant to calcium hydroxide but unable to survive at higher pH. After intracanal dressing of calcium hydroxide in radicular dentin, due to its buffering effect, the alkalinity may only reach a ph of 10.3. This one factor may be responsible to the resistance of E faecalis to Calcium hydroxide. The presence of proton pump in the cell wall of E faecalis, could be another reason for its resistance towards Calcium hydroxide.29 In the present study Propolis alone and with antibiotic was found to be more effective than calcium hydroxide and calcium hydroxide with antibiotics. Rezende Ceps R et al and Jahromi MZ et al have also found propolis to be more effective than CaOH. Propolis showed the synergistic effect with ciprofloxacin and moxifloxacin at all time intervals.13,30 In this study Propolis showed maximum efficiency against Enterococcus faecalis in combination with Moxifloxacin followed by Ciprofloxacin, which is similar to the results obtained by Krolet et al, Fernandis A et al, Ricardo Oliveria et al, Gheda Helaly et al, Kracko M et al and Stepanovic S et al who found propolis to have synergistic effect with various antibiotics.31-36 Calcium hydroxide also showed synergistic effect with antibiotic at all time intervals, which was maximum with Moxifloxacin followed by Ciprofloxacin at all time intervals. Conclusion: On the basis of the results of the present study it can be concluded that Propolis and Calcium hydroxide show synergistic effect with Moxifloxacin and Ciprofloxacin against E. Faecalis. Propolis in combination with antibiotics and alone is more effective than calcium hydroxide. The use of Moxifloxacin as an intracanal medicament should be seriously explored. In order to draw more definitive conclusions, a wider and more detailed study needs to be undertaken. Clinical significance: Since propolis alone and in combination with antibiotics was observed to be more effective than calcium hydroxide, propolis can be considered as an intracanal medicament when compared to traditional calcium hydroxide.

Aluminium :: essays research papers

Aluminium The history of Aluminium use Aluminium is now one of the most widely used metals, but one of the hardest to refine due to it's reactivity with other elements. Even as late as the turn of the century, Aluminium was considered very valuable and in turn expensive, even more expensive than gold. In some cultures, when a function was held (for example, a party) by wealthy people, only the most honored guests would be given Aluminium cutlery, the others had to make do with gold or silver cutlery. A Description of the Aluminium ore, including a list of it's contents Pure Aluminium oxide is known as alumina (Al2O3). This is found as corundum, a crystalline. Aluminium can also occur as cryolite (Na3AlF6). Traces of other metal oxides in Aluminium oxide tint it to make it form stones (often precious) for example: chronium gives a red colour to rubies, and cobalt makes the blue in sapphires. How Aluminium deposits are formed Aluminium (like many other metals) is not found in it's pure form, but associated with other elements in rocks and minerals. An aluminosilicate such as felspar (KAlSi3O8) is the main constituent of many rocks such as granite, which is quartz and mica cemented together with felspar. These rocks are gradually weathered and broken down by the action of carbon-dioxide from the air dissolved in rainwater forming ‘kaolin'. This is further broken down to form other substances, ultimately resulting in the formation of Aluminium deposits. Where and how Aluminium is mined? Aluminium is never found in it's pure state until it has been refined. Aluminium is made when refining alumina, which is in turn found from the ore ‘bauxite'. Bauxite is often mined in the opencast method. Aluminium deposits are found in many countries, but the countries with significant deposits include: Guinea, Jamaica, Surinam, Australia and Russia. How is Aluminium refined? One method is the ‘electrolytic process'. This is performed when a low voltage current is passes through a bath containing alumina in the molten form. The alumina is broken down into Aluminium metal which collects at the bottom of the bath at one electrical pole, the cathode, and the oxygen which reacts at the other pole, the anode, to give carbon-dioxide and some carbon-monoxide. The uses and properties of Aluminium Aluminium is now the second most widely used metal, after iron.

We Are Not the Greeks :: Argumentative Persuasive Argument Essays

Shelley once said, "We are all Greeks," a sentiment which was echoed by many of his contemporaries who shared his belief that theirs was an age of achievement comparable to the Greeks.[1] Even beyond that era, people today hold a widespread belief that, although we aren't quite Greek ourselves, we are quite capable of understanding them, and that we have an innate familiarity with the Greek tradition. Our claim of an affinity to Greek literature can be found almost anywhere in modern society; the intelligentsia sprinkle allusions to all things Greek in books and films; the reference to Homer is considered the calling card of academic legitimacy. We are the consumers of a dominant culture that is rife with references to Greek literature. Consumerism does not lead to understanding, however. Anyone could justifiably make the argument that people experience the same struggles and emotions no matter what years bookend their lives and regardless of what gadgets or people fill up the space between them. However, to say that an emotion finds expression equally well on a Greek face or an American face leads to a false sense of our affinity to the Greeks. The point is not whether we share the same range of human experience, but whether we are capable of understanding the same means of expression. Just as much as we accept that Greek is a language foreign to us, we must accept that cultural differences exist that make most of those familiar names and quotes merely accessible parts of a culture that is largely inaccessible to the masses today. The average American is separated from the Greek epic. Although the lowest man is as capable of tragic struggle and feeling as any Greek hero, he is not capable of comprehending the scale and scope of the epic in his own life. We have no way of grasping the gargantuan undertaking of an epic. The epic poem is nonexistent in modern literature, and the number who read epic poems is decreasing rapidly as well. We may read excerpts or quotes about famous works, and from those remarks be able to afford remarks of our own, but this is a form of Cliffs Notes to cultural fluency. The fact that these facile and passing acquaintances serve as the bulk of our culture's understanding reveals the imperfect nature of what we assume we know. We feel qualified to claim a connection with the Greeks, through no proper understanding of our own, but rather through an opinion about an interpretation of a translation.

Acer Weaknesses

Acer closes in on Dell's No. 2 PC ranking By Bruce Einhorn, BusinessWeek Tuesday, January 20, 2009 11:33 AM Just a few years ago there was a clear pecking order in the PC industry, with Dell at the front and Acer way back in the queue. Dell and its U. S. rival Hewlett-Packard were the clear champions, selling far more desktops and laptops than anyone else. Meanwhile, little Acer, a Taiwanese company that had tried and failed in the 1990s to crack the U. S. market, was an also-ran, with worldwide market share in the single digits. As recently as 2003, Acer ranked just seventh in sales around the world. Lately, though, the Taiwanese have been pushing their way ever closer to the front of the line. Market-share numbers published on Jan. 14 by research firm International Data show HP is still on top, with 19. 6 percent of all PC shipments, and Dell is No. 2. But Michael Dell has reason to worry. While Dell shipments fell 6. 3 percent in the fourth quarter, Acer's jumped 25. 3 percent. That not only puts the Taiwanese company solidly in the No. 3 position worldwide, it puts Acer less than two percentage points away from Dell, with 11. 8 percent share to Dell's 13. 7 percent. And Acer is likely to keep on closing the gap, say analysts. In the next two or three quarters, you will probably see Acer surpass Dell,† predicts Daniel Chang, an analyst in Taipei with Macquarie. Gateway Was an Opening What accounts for Acer's rise? The company is benefiting from its US$710 million purchase of Gateway, announced in August 2007. At the time of the deal, Gateway was the third-biggest PC brand in the United States, and the purchase has helped Acer gain ground in a market that had long stymied the Taiwanese company. Shortly after that deal, Acer followed up with the acquisition of the Packard-Bell brand, popular in parts of Europe. According to the latest IDC numbers, Acer now ranks third in the United States, with shipments of 2 million computers in the fourth quarter. That puts Acer ahead of Apple and behind only Dell and HP. Acer declined to make any executives available for comment. Even more important for Acer's market-share rise has been its focus on the hottest new segment in the computer industry, so-called netbooks. These pint-size laptops are light, simple computers that typically cost no more than US$500 and are based on a design that Intel first developed for schoolchildren in emerging markets. The first to realize that the netbook could become a crossover hit in wealthier countries was Acer's Taiwanese rival Asustek Computer, which launched its Eee PC in late 2007. Acer quickly followed, and it soon grabbed the lead. Meanwhile, Dell, HP, and Lenovo hesitated before launching netbooks of their own. â€Å"They didn't start producing the mini-notebooks until late in the game,† says Robert Murtagh, worldwide PC tracker research analyst with IDC in San Mateo, Calif. â€Å"That has given Acer a strategic advantage. † Low-Price Trend With recession-weary consumers hunting for bargains, Acer's focus on inexpensive netbooks—and its longtime role as a lower-cost alternative to the likes of Dell and HP–have helped the company boost shipments. And while the competition in the mini-notebook business is bound to get tougher in 2009, Acer's head start should give it an important edge. â€Å"We believe Acer will continue to be the winner in the low-price trend and the netbook market,† wrote Credit Suisse analysts Robert Cheng and Jill Su in a Jan. 13 report. Moreover, one of Acer's weaknesses, its relatively poor position among corporate customers in the United States, has meant the company has suffered less than Dell and Lenovo, both of which have relied more on sales to businesses. According to IDC, Lenovo shipments fell 4. 8 percent in the fourth quarter; the company on Jan. 8 announced plans to lay off 2,500 employees, 11 percent of its workforce. Tracy Tsai, an analyst in Taipei with market research firm Gartner, says Acer won't need to make the sort of layoffs that others have. â€Å"Acer has real tight management on its costs,† she says, and it has just 6,000 workers. â€Å"The smaller size f Acer puts it in a better position. † Still, Acer faces some headwinds. Credit Suisse estimates 2008 earnings rose 7 percent, to US$353 million, on sales of US$16. 5 billion. But this year profits are likely to fall 7. 5 percent, on a 6 percent drop in sales, the bank says. Macqaurie's Chang expects a slowdown, too, and he warns that Acer's focus on building market share distracts the company from a more important statistic: earnings. As competition heats up further in netbooks, he says, Acer will face pressure to cut prices even more, drawing would-be customers away from its laptops and hurting Acer's bottom line. Everybody's netbook looks very similar now,† says Chang, so companies selling them â€Å"can compete only on price. † For its part, Dell argues against paying too much attention to market-share rankings. â€Å"When we reported our Q3 financial results, we said our focus in this challenging environment was–and continues to be–on positioning Dell for long-term profitable growth by improving our competitiveness and enhancing our leading product and services portfolio,† Dell spokesman David Frink says via email. â€Å"We're in the midst of that now. â€Å"

Debate Advertising Towards Children Can Only Be Seen as Harmless

Introduce team members- Aidan Laura Marketing Debate Notes: On average, children in the U. S will watch 25 000 – 40 000 television ads per year. $15 – $17 billion is spent on these ads ? marketers see children as the future and aim to create brand loyalty from a young age. Therefore positive advertising at children will help shape the future ? developing healthy/positive lifestyles in children from a young age van only benefit society in the long run. Children’s diets result from the interplay of many factors. Multiple factors account for childhood obesity, including individual, social, environmental and cultural factors. Parents & Money There are many children who appear not to be adversely affected by marketing targeted at them ? their parents’ instilled good values in them. Positive Effects of Advertising Children are the future and therefore allowing them to be subjected to more adult concepts that are displayed to them in marketing such as decision-making and critical thought can only prepare them better for the future. Marketing to children (and as a whole) works because it lives off of deeply held beliefs about self-expression & freedom of choice ? ideologies that children can only benefit from being exposed to. Marketers use overly creative tools to engage the young audience – this creativity can used in the future to be successful. Communication in itself can be a force for real good ? this good is often overshadowed by the bad effects marketing has on, however if it has the power to do this then the positive advertising must have the potential to be as effective. Marketing helps develop children’s media literacy and critical decision making, which are necessary in adulthood. Through marketing, children learn to analyse what they are presented with and become more street wise. Positive Advertising Examples Nickelodeon: encourages physical activity, community sport participation, consumption of fresh fruit and veg Harry Potter Books marketing: nowadays massive budgets are given to book releases as well as movies – Harry Potter and Twilight books were promoted heavily and the igh sales of these books shows how successful the marketing was. Aus Kick and other community sports advertisements: advertising and sports sponsorship encourage children to participate in some form of physical exercise. Breakfast Cereals: all children’s breakfast cereals either promote healthy learning (sultana bran- fight the fuzzies) or physical activity (nutrigrain- ironman, weetbix- aus cricket team). These cereals are often sponsored by a sports team or organisation and therefore the cereals brand can be seen when watching these sports along with the primary advertising. This encourages children to value physical exercise and value their education. In 1998 3,000 children and teenagers under the age of 18 years in the United States begun smoking. Non-profit organizations and government agencies used social marketing and advertising to prevent children and youth from starting smoking. Now in 2010 the number has dropped remarkably due to advertising, which as changed the social norm. Children and young people are an interested and active consumer audience that should be acknowledged, valued and respected. Figure 2 ‘What I eat every day’ was a clear concern, with 83% considering this important. Similar studies during the late 1990s carried out by HPI for Procter and Gamble and Sunny Delight showed children far less concerned about their daily diet than they are nowadays (advertising is benefiting children). Daily diet was important across the age spectrum, with children as young as six to nine saying what they eat was important. What they eat every day was important to 81% of 14-16 year olds. Figure 6 Children understand the context and consequences of healthy eating. They were asked how they thought eating healthily could beneifit them and while fuel and growth was naturally highest scoring, they also recognized that healthy eating gives energy and promotes general well-being. They themselves talk a lot about balance; they know eating healthy eating promotes well-being as well as helping you grow. They acknowledge the need for a variety of different foods (dairy for bones, vitamins in fruit and veg) although most are unsure why. Burt. M. , 2009, Marketing to Children – An Ethical Predicament, Ethical Corporation. http://www. ethicalcorp. com/content. asp? ContentID=425 (accessed 3rd March 2010) Benady. D. , 2008, The Positive Power of Pestering, Marketing Week. Shah. A. , 2008, Children as Consumers, Global Issues, http://www. globalissues. org/article/237/children-as-consumers (accessed 10th March 2010)

Understanding Research techniques in nursing Essay

Understanding Research techniques in nursing - Essay Example In addition to that, the nominal level of measurement entails the grouping of cases into categories. On the same note, in this level of measurement, the measure of dispersion draws its basis on the frequency of the distribution which is the particular frequency of cases in each category (Fisher& Marshall, 2009). On the contrary, the other level of measurement in descriptive statistics is the ordinal level. Apparently, this level of measurement entails grouping of cases into several groups like the previous case. However, here unlike the first case, the categories have numerical hierarchies where data in this level of measurement are classified in a hierarchical manner; in other words, starting from the lowest to the highest point for instance marks (Fethney, 2010). Notably, the measures of the dispersion are similar to the nominal level of measurement but they only vary on the arrangement of the data in the groups. Evidently, the role of descriptive statistics is inevitable in the field of nursing; self-efficacy, which is the ability of a nurse to translate research into meaningful evidence in the field of healthcare (Britt, 2009). On that note, through the study of descriptive statistics, a nurse can be able to think critically and reasonably and thus better job performance (Fisher& Marshall, 2009). It is worth noting that, this particular area of study aids in the building of the thinking capacity of an individual and thus the self-efficacy. Apparently, descriptive statistics can be said to at times very persuasive since it is not a very difficult discipline to venture in as compared to other fields for instance science which may require very complex scientific experiments in order to yield a particular result (Fethney, 2010). Although descriptive statistics plays a huge clinical significance, so does the confidence intervals. On the same

Analyse different representations of Australian colonial history, and Essay

Analyse different representations of Australian colonial history, and of the suffering of Aboriginal people - Essay Example I would agree that these are admirable goals. However this is still not enough in my view. I don’t see a definition of â€Å"Reconciliation† in either speech. Actually I don’t think it can be precisely defined in this context. However, I would argue that a degree of Reconciliation is achieved when (1) both societies are economically viable and one is not excessively dependent on the other, for example for welfare benefits and medical assistance for societal problems such as alcohol and drug abuse, (2) members of one society can move into the other if they chose, feel comfortable and prosper as long as they respect cultural differences, (3) while major criminal and civil laws must be universal, those that relate only to local community customs should be allowed some variance. For example if it is acceptable in aboriginal culture to go nude in public they should be allowed to do so within their communities and this should be accepted by visitors and (4) both societ ies actually but also perceive that they benefit both economically and psychologically by remaining in a unified Australia in spite of required compromises and accommodations.

Exam questions Essay Example | Topics and Well Written Essays - 5000 words - 1

Exam questions - Essay Example The Discounted Cash Flow ("DCF") technique is the most commonly used valuation method that accounts for the "going-concern" value of the Company. The cash flow projections are derived from (a) assumed revenue generation on product sales, less (b) operating costs and debt repayment on capital investments (not including interest payments), plus (c) an estimate of the Company's residual value at the end of the 3 to 5 year period. These projections are then discounted back to the present by the risk-adjusted, weighted-average cost of capital. This cost of capital accounts for interest payments and/or equity returns expected by investors in the Company over the projection period. Venture Capital Valuation Techniques Sophisticated investors such as VCs, institutional investors and corporate investors generally begin the valuation analysis by examining management's cash flow projections to test the underlying assumptions and business model. Once the investor has developed a certain comfort level in the projections, a variety of techniques are used to determine the percentage ownership the investor will require. Each of these methods start with the management's projections under the DCF technique, but ignore management's application of its assumed discount rate to the present in order to value the Company. Instead, the VC investor imposes its own ROI, as indicated in each of the methods described below - to meet its own investment parameters irrespective of management's analysis of the cost of capital. By applying its own ROI, the investor can then determine the percentage ownership it will require to reach this ROI assuming a certain market valuation for the Company. Where these VC valuation methods differ from the DCF method is in (a) the difference...Once the investor has developed a certain comfort level in the projections, a variety of techniques are used to determine the percentage ownership the investor will require. Each of these methods start with the management's projections under the DCF technique, but ignore management's application of its assumed discount rate to the present in order to value the Company. Instead, the VC investor imposes its own ROI, as indicated in each of the methods described below - to meet its own investment parameters irrespective of management's analysis of the cost of capital. By applying its own ROI, the investor can then determine the percentage ownership it will require to reach this ROI assuming a certain market valuation for the Company. Where these VC valuation methods differ from the DCF method is in (a) the difference in the discount rate, or ROI applied by the Company and by the investor, and (b) the use all VC methods employ of P/E ratios to determine market valuation of the Company at the end of the projection period (equivalent to the methods used under the DCF technique

Is it better for companies to have too much data or too little data Essay

Is it better for companies to have too much data or too little data Why - Essay Example The data of an organization includes all sort of information that is recorded either in paper or in computer system. The business activity is mainly depended on data and information. Documentary evidence is required for most of the important activities in a business. The size of the data requirement of an organization increases by the increase in the size of the business. â€Å"Every process uses data and almost all business rules are enforced by data† (B2T training, 2008). The rules, regulations and limitations of the business are always made in a document form. Documentary evidence is required for every activity of the business. When any relevant data is lost in the business certain activities get interrupted. This is harmful for the day to day working of the business. Therefore data maintenance is a very critical activity in a business. The data requirements of a business also differ by difference in the nature of the business being carried on by it. For example in the case of an insurance company the relationship between the company and the client is evident only from the document that is agreed upon by the client and the company. Therefore, in a large business entity data management is a separate specialized activity. The data that are used in the company are both external and internal. â€Å"Once internal data is understood, a detailed review of available external vendor data should be conducted† (Lucker, 2005). What the companies should focus on while maintaining data is that only relevant data should be maintained. Relevant data refers to the data that are required for the daily running of the business and the data that has to be maintained by the company as per the statute. But the question under discussion is that whether the companies should maintain too much or too little data. Too much data is both beneficial as well as harmful for the organization. Too much data will contain

Research a topic about an artist, an art style, a period in art Essay

Research a topic about an artist, an art style, a period in art history, a particular type of visual art - Essay Example The first artistic period that should be carefully examined as called the Blue Period. It lasted several years from 1901 to 1904 and features depressive pictured that were painted primarily using blue color. It is argued that â€Å"the Blue Period was a direct result of his friend’s death† (Walther 15). Indeed, a close friend of Picasso died and the famous painter found a way to express his grief with the help of art. The next period that one may want to explore carefully is often called the Rose Period. It lasted for two years, but it was incredibly fruitful. Just like with the previous period, the major color that dominated the majority of the paintings, but rose, but the tone of the works of art was absolutely different. It often included harlequins which is largely seen as the symbol of Picasso that he put in his paintings. The third period in his artistic development is a transitional one. Nevertheless, it was able to provide the world with fabulous masterpieces. The name for it is the Black or the African period and it lasted for three years: from 1906 to 1909. Indeed, at this time the technique of Picasso has been largely influenced by the African art, especially the masks that the African tribes created. In addition to that, it is largely regarded as the period of time when the artist developed his first understanding of cubism. The period that preceded is largely one of the most important and one of the longest ones. It lasted from 1909 to 1917 and the general term that is given to it is cubism. However, it is important note that within cubism, there have been several periods as well. At first Picasso changed the shapes of some objects while depicting the reality. Afterwards, during analytic cubism, the reality was carefully examined and presented as a mechanical aggregation of geometric shapes. Finally, the synthetic cubism often presents the object as easily recognized symbols, but in distorted order. Starting from 1917

Power Line Communication Essay Example for Free

Power Line Communication Essay The objective any mining company like TATA STEEL is to reduce the amount of energy used in mining through the increase in employee productivity and safety. Mining operations consist of several tasks. The highest efficiency can only be achieved with full coordination among the persons carrying out these tasks and if the locations of vehicles and people are known by those who coordinate the activities. In addition, the large number of risks of explosion has the potential to cause a major accident. Therefore, the establishment of a better communication system for the mine underground is very important and significant to modernize the mine management, increase the labour productivity, and strengthen the security to protect the lives and property of the mines. Present Scenario At present, cable telephone communication, power line communication, sensor communication, telecommunication, leakage communication, and radio communication are the main forms of communication in a mine. Our study shows that, a variety of mobile communication methods have their limitary application under coal mine. Some mines still use hardwired wall-mounted telephones. The disadvantage of this technology is the obvious necessity that the user cannot be mobile. To reach this person, the caller must page the person who must then go to a wall-mounted telephone that may be a long distance away and in the case of an accident the telephone may be inaccessible to the injured person. Another popular technology , Leaky Feeder technology requires a relatively stiff,hard-to-install cable, about 5/8† in diameter, to be installed everywhere where communication is desired. To communicate the user must be in line-of-sight of the cable and not more than thirty or eighty feet away from the cable. According to a survey conducted on how well current systems meet the needs for mining communication, 62 percent of Respondents replied negatively. None of them thought that mining communication needs were being met extremely well. Some of their replies- â€Å"Overall we cannot communicate well with miners.† â€Å"There is the issue of battery, phone and wiring maintenance.† â€Å"Safety in an emergency is still an issue.† As the power lines in an underground mine cover a broad area, if we can make full use of power lines to communicate, then we can completely solve the problem underground communication. The use of power lines saves the cost of additional cable and the labour cost for system installation. Furthermore, power lines are built and installed in a rugged manner. Any underground wire or cable, when fed an RF signal, tends to distribute that signal throughout its length. Carrier current systems utilize this fact to establish communication paths using existing mine wiring. Carrier current devices are basically FM radio transceivers that transmit and receive over existing mine wiring instead of using an antenna system. The LF (low-frequency) and MF (medium frequency)KP ranges propagate best in carrier current systems. A common example of a carrier current system is the trolley carrier phone systems presently used in many mines. Another example is the shaft communication systems that utilize the hoist rope itself to establish communications to and from the cage. The most modern system, based on MF, promises to be the most effective of a l l . But there are lots of complex interference noises in power line communication under mine. More recently, the maturity of wireless as an accepted medium has increased the demand for instant, reliable, portable communication. Underground mines, however, have proved resistant to wireless communication due to environmental conditions that limit the transmission of radio waves. â€Å"Mines are looking to find such a system. It would become universal over time due to safety, a decrease in down time and an increase in productivity.† This system may be further enhanced to A GPS-like (Global Positioning System) for underground mines which would serve an extremely useful function in saving energy in mining operations. Autonomous (i.e. unmanned) machinery has been a long-standing objective of the mining. This would move miners from underground mines to the surface from where they would remotely control mining operations. Extremely important is to note that such a move would allow shutting off the energy-guzzling fans, which would result in large amounts of energy savings. Economics PLC is viewed as especially attractive because of several characteristics. Electricity services in most developing countries have higher reach than telephony. In addition, PLC can provide an elegant solution for in-home access and networking, since the signal can reach virtually any outlet in the home. However, there are several important technical issues in this simple scheme. The signal attenuates as it goes over the line, with higher losses at higher frequencies. Given emission limits that restrict boosting the transmission signal, the only solution is the use of repeaters en-route, increasing the cost. Secondly, the LV transformers act as a low-pass filter, allowing electricity through with low losses but not higher frequencies. This is why most solutions rely on bypassing the distribution transformer. While an opportunity in terms of sharing capital equipment costs across users, shared infrastructures also lead to congestion, multiplexing, interference, and security concerns. To overcome these issues, PLC solutions rely on sophisticated signal processing and encoding. For PLC to be successful, it must not only operate successfully from a technology point of view, but also present a viable business case. The market space consists of not only well-entrenched alternatives like DSL (Digital Subscriber Line) and cable, but also alternatives such as Fibre-To-The-Home (FTTH), Fiber-To-The-Curb (FTTC), and broadband wireless. Issues of telecom, regulation and competition play a vital role in deciding the future of PLC. Depending on the number of feeders emanating from the substation, different MV couplers are needed. At every distribution transformer, a concentrator cum transformer bypass is required. This device transfers the signals to the medium-voltage line, bypassing the transformer. In addition, depending on the distances involved, repeaters might be needed to extend the signal. In addition to the one-time costs, which are amortized over specific periods, there are also explicit calculations of monthly operating costs. After thorough estimation from various sources (web and consulting some industry people) the monthly costs of PLC is found to be around US$35 per month per user. Most of the values chosen are plausible, if not optimistic. In some hazardous locations, where specialized personnel are required, installation costs have been estimated at US$200–300. On the other hand, in normal cases, the installation would be somewhat over US$100 per user . The total capital costs per consumer (excluding Customer Premises Equipment (CPE)) average about US$85 , assuming an average of 6 homes passed per LV transformer. One result that is robust across most assumption ranges is that operating expenditures are about 45% of the total costs. The most important variable, under the assumptions is the time period for paying off of the equipment. Given the fast changing nature of the telecom industry, the median value for economic purposes is assumed to be 5 years. In addition, within a region, the competitive pressures might be much lower, allowing for higher market share and greater sharing of equipment, marketing, and maintenance costs amongst subscribers. Given the estimated monthly costs of PLC it is almost clear that there is a gripping business case for PLC in the near term based on price for the end-user. Of course, economics is not the only factor in determining the success of PLC or any other broadband technology. User satisfaction, customer loyalty, branding, and competition (alternatives) are all important factors as well.