Dbq-Early Valley Civilizations Essay

DBQ-early valley civilizations essay Throughout history, civilizations have contributed to the cultural and intellectual life of humanity. These civilizations had developed about 5000 years ago. These civilizations had been defined as based on agriculture and urban settlements. At that period had been developed many cultural and intellectual achievements, but also stable government and a strong economy. The ancient River Valley civilizations of Egypt and Mesopotamia all made key contributions to future societies.For thousands of years, people all over the world have developed, progressed, and eventually formed civilizations. The area between the Tigris and Euphrates River was called Fertile Crescent because its rich soil and crescent shape (document 1). This region was where Mesopotamia one of the first civilization on earth grew. Sumer was an ancient civilization in Mesopotamia they created cuneiforms. Cuneiforms were the world’s first written language; Sumerians invented thi s writing system to keep track of business dealing (document 2).Mesopotamia developed between the Euphrates and Tigris River. Geographically, Mesopotamia occurred near major rivers since water was easily available and agriculture flourished. The most important invention that was created in the ancient times by Sumer in Mesopotamia was the wheel . it had a major impact in the world because it makes it easier for people to get to places faster and without the wheel the world would not have been the same. Egypt civilization was located in northeast Africa near on the border of the Nile River.Hieroglyphics was a system of writing that was based on pictures; it was created by the Egyptians to keep the records (document 6). pharaoh was the name of the king or god king of Egypt. Pharaoh built pyramids to serve as houses or tombs and specialized skill such as mathematics, geometry, engineering and architecture were need to built the pyramids (document 5). Life in ancient Egypt was centered largely on agriculture. The majority of the people were involved in farming. Wheat, fruits and vegetables were the principal crops.The Nile River helped irrigate the crops and made the soil fertile for good farming; people depended on the Nile for food and water (document 4). Egypt contributed many things in the world, such as their efforts in astronomy, medicine, writing, mathematics and architecture. In conclusion, the ancient River Valley civilizations Egypt and Mesopotamia did have many key contributions that helped expand future societies. Egypt and Mesopotamia were two civilizations that contributed to the expansion of trade, civilization, government, and political and social status.

Fundamentals of Nursing Research: evaluation of the evidence for nursing practice Essay

1.How do nurses and doctors interact in acute settings? In this study, I would like to use ethnography. When compared to other qualitative methods like ;phenomenology or grounded theory,ethnography is a systematic approach,which includes observing,detailing,describing,and analyzing the patterns of culture(Leininger,1985).The key feature of ethnography as a qualitative research methodology is that, it involves long term study of a group by the researcher who becomes both the observer and participant in the group this is often termed as participant observation(Ellis 2010)They don’t always take a participant role,sometimes they are non-participant observers. Access to a group for study may involve the researcher in seeking the help of a gate keeper(Ellis 2010). In this study a gate keeper can be the HOD of acute care unit who allows to access the group of doctors and nurses and also to introduce them. However there are some ethical issues this approach like an informed concent of colleagues(Ellis 2010) Convenience sampling is apt for this study as the researcher cannot predict the situation.It might be very difficult to get enough number of sample at a stretch,observation during a period of one week with different staff at different shifts,would be great to get maximum number of sample of 40 . Data collection methods include observation and interview .There are mainly three broad types of information are usually saught by ethnographer ie;: the cultural behaviour(which means what members of the culture do) Cultural  artifacts : What members of the culture make or use Cultural speech(What people say) This implies that ethnographers rely on a wide variety of data sources including observations indepth interviews records charts and other type of physical evidence(Diary letter) (Polit and Beck 2010) Observation is not unique to research and can be considered as part of every day life(Benner and Fian,2008) . Adler and Adler (1994) noted ; â€Å"For as long as people have been interested in studying the social and natural world around them observation has served as bedrock of source of human knowledge†(P 377) Often the key objective of using observation is to check weather what people say that they do is the same as what they actually do. As Hammersley (1990) suggested to rely on what people say about what they belive and do, without also observing what they do, is to neglect the complex relationship between attitudes behaviour( p 597) There are many other reasons for using observation as the data collection method : †¢ It helps us to inform about the influence of the physical environment †¢ Captures sense of the context of the and whole social settings in which people function †¢ Helps to illustrate the whole picture (Benner and Fian,2008). Some phenomena lent themselves well to observation(Polit and Hangler 1995) including characteristic and conditions of individuals, verbal and no verbal communication behaviour, activities, skill attainment and performance and the characteristics of an environment.(Benner and Fian,2008) Observation can be considered as an approach ,in which the aspects of the phenomenon to be observed are operationally defined and decided in advance(Benner and Fian,2008) It’s actually a skill to interview in qualitative research and this can be acquired through practice. (Ellis 2010) ethnographic interviews are unstructured- here i would like to use descriptive questions to ask participants about there experiences in there own language and are the backbone of ethnographic interviews(Polit and Beck, 2008) however study participants will not share much information with interviewers if they do not trust them close rapport with respondence provides access to richer information and to personal or intimate details. And audio taping equipment batteries tapes notepads and pens are essentials. Tape recorded interviews should be listened to and checked for audibility and completeness soon after the interview is over. The analysis mainly based on the patterns in the behaviour and thoughts of the participants comparing one pattern against another and analyzing many patterns simultaneously(Felterman 1989) Spradly’s 1979) /In an ethnographic study,research sequence is often used for data analysis .(Polit and Beck, 2008).On the other hand Spradely believes that language is the primary means that relates cultural meaning in a culture. His sequence of 12 steps, which includes both data collection and data analysis, and the analysis part includes making a domain analysis which are units of cultural knowledge and making a taxonomic analysis asking contrast questions making componential analysis discovering cultural themes and the last step is writing the ethnography. (Polit and Beck 2008) On the contrary ,it is very challenging method when it compares to other quantitative methods for there are no universal rules for analyzing data( Polit and Beck 2008). 2 – Do weekly counseling sessions decrease stress levels of carers of people with Alzheimer’s disease? This study can better done by the experimental method, to be more specific a randomized controlled trial is apt for this particular study. The genuineness of true experiments give us greater confidence that they depict the causal relationships under controlled settings of study (Polit and Beck,2008) Randomized controlled trials are able to answer a very specific question or related questions,because it uses specific manner ( Ellis 2010). RCT use techniques to find out the relationships between to variables. Moreover it holds direct control over many other factors that may effect the validity and reliability of the findings( Ellis 2010). Here Independent variables is weekly counseling sessions and dependent variable is stress levels of carers of people with Alzheimer’s disease. RCT’s are characterized by the following properties âÅ"“ Manipulation – The experimenter does something to some subjects or some type of interventions. âÅ"“ Control – The experimenter introduces controls into the study, including devising good approximation of counter factual – usually a controlled group that does not receive the intervention. âÅ"“ Randomization – The experimenter assigns subjects to a controlled or experimental conditions on a random basis. (Polit and Beck 2010) It was pointed out earlier that the RCT involves the random allocation of participants(Carer of people with Alzheimer’s disease) between experimental groups, whose members receive the treatment (in this study weekly counseling sessions) and control group who is devoid of or receive no intervention (in this study intervention means counseling sessions) I think a continuous 8 weeks counseling sessions that includes psychological and physical retreat of carers of Alzheimer’s patient can decrease stress levels of participants. In this particular study ,we should make sure that all meet the demands of inclusion criteria( Ellis 2010). In this study inclusion criteria involves carers who suffer from stress related to their work experience with Alzheimer’s patient. After sampling ,the researcher divides the entire sample into two different groups so that each group portrays the similar characters and even in terms of variables. ( Ellis 2010). Researchers manipulate independent variable by administrating the intervention to some subjects while withholding it from others. To illustrate participants in the experimental groups are subjected to counseling sessions through out the period where as those in the controlled group gets the usual care and treatment . Firstly, researcher have to do a pretest that involves the observation of dependent variable before the counseling session. This design permits us to examine what changes in stress levels were caused by the 8 week counseling session because only some people were subjected to it, providing an important comparison (Polit and Beck 2010) There are mainly two methods for data collection namely clinical or non clinical. Here it is a non clinical method we can use questionnaires for the data collection.( Ellis 2010).A crucial part of good research design concerns making sure that the questionnaire design addresses the needs of the research.To put this another way; somehow we need to ensure that the questions asked are the right ones.(iss.leeds.ac.uk †º home †º resources †º tutorial documents †º surveys). Reliability and validity are the two important aspect about the tool.The consistency in measuring is reliability .If the device produces the same or similar results when it uses under same circumstances,it is reliable. Whereas validity defined as, whether a tool measures or examines what it claims to measure or examine./(www.holah.karoo.net/reliabilityandvalidity.htm)‎ Outcome data should be collected in the same way and with the same figures for all the study group to facilitate this where possible participants may remain unaware of the intervention being received(Gerrish and Lacey 2010).Here the researcher can use blinding in order to reduce the risk of biases.(http;//www.ajronline.org/doi/full)It means the participants in the trial doesn’t know which intervention is given to each individual. A comparison of both group after the counseling session can be done by a post test. Despite the benefits of experimental research this has some limitations, first of all there are often constrains that make an experimental approach impractical or impossible(Polit and Beck 2008) 3: What are the factors that influence women’s smoking behaviour during pregnancy? This study has got social relevance. The grounded theory tradition which has its roots in sociology, seeks to describe and understand the social psychological and structural processes that occur in a social setting.(Polit and Beck 2008).It’s procedures are not specific to a particular discipline or method of data collection.(Holloway and Wheeler,2002) Grounded Theory research is used to generate theories about practice and understanding from many different areas of health care(Ellis 2010) so in this study grounded theory is very apt because it deals with a practice or a habit and we can gain insights into how pregnant ladies changes there smoking behaviour during pregnancy Of the qualitative approaches to research grounded theory is perhaps the most systematic in its approach. Grounded theory systematically applies procedural steps to explore social phenomenon and derive a theory that explains people’s understanding of those phenomenon .According to Strauss & Corbin, grounded theory emerges inductively from the research study.It undergoes very systematic process, data collection and analysis of data are the two major aspects of the study,so that the theory or the phenomena derives from the reciprocal relationship with each other.(Strauss & Corbin,1990) The starting point for grounded theory is that to select a homogeneous sample ,which means a sample portrays same kind of experience and with same process . A broader sample enables the researcher to draw on the experience of people to come to some conclusion of their experience (Ellis 2010) Samples for qualitative studies are generally much smaller than those used in quantitative studies.(www.qualitative-research.net †º Home †º Vol 11, No 3 (2010))The sampling in this study is theoretical sampling. I would like to select the samples from antenatal clinics or GP’s. The sample needs to be broad enough to enable the researcher to draw on the experiences enough people to come to some conclusion (Ellis 2010).But usually Grounded research typically done with 20 to 30 people.(Polit and Beck,2008).The sample size is determined by the theory being generated from the qualitative data. The data analysis can be done in two ways.Firstly, grounded theory may be used as a technique for analyzing data, which includes the process of constant comparison. The theory suggests that categories and properties are concepts that are identified by the researcher and evolve from the constant comparing of the data. (epress.anu.edu.au/info_systems/mobile_devices/ch04s03.html) Constant comparative analysis can be explained as the continuous comparison of data obtained from different participants so that the researcher analyses the difference or similarity among them.(www.rangahau.co.nz/analysis/83/‎) Methods used in data collection include, interviews ,documentary evidence, case studies and participant observations. Here i would like to use interview as my data collection method.It would be so helpful when we can maintain the field notes throughout the process of data collection.Certain occurrences in the setting or ideas from participants that seem of vital interest are recorded either during or after data collection.They remind the researcher of the events and interactions and trigger thinking process.(Holloway and Wheeler,2004). As mentioned above the analysis of Grounded theory can be done by two major methods; Firstly, the Glaser and Strauss’s Grounded theory method, and the second one is Strauss and Corbin’s approach.(Polit and Beck,2008). In this study i would like to use Strauss and Corbin’s approach. Main three types of coding includes ; Open axial and selective coding the out come of the Strauss and Corbin’s approach is a full conceptual description that explains how a basic social problem that emerged from the data is processed in a social setting (Polit and Beck 2008)†¦. When compared to other ways of qualitative analysis, It provides researchers with a unique tool for theoretical development.On contrary to the conventional path Grounded Theory works inductive . A researcher affords the luxury of maintaining an open mind and allowing the data to inform the discovery of theory. Natural phenomena is best represented by the emergent findings avoiding preconceived ideas. (ro.uow.edu.au/cgi/viewcontent.cgi) 4: What is the effect of hydrotherapy on the pain levels of people with osteo-arthritis? This study is Quantitive study. The true experimental designs are those in which the researcher has a great deal of control over the research situation.(Nieswiadomy,2008).There are three criteria for a true experimental design.Firstly, the researcher manipulates the experimental variable(s).Second one is at least one experimental and one comparison group are included in the study.Last criteria is that subjects are randomly assigned to either the experimental or the comparison group. (Nieswiadomy,2008). Using manipulation, researcher consciously vary the independent variable and observe its effect on dependent variable. Researcher manipulate the independent variable by administering an experimental treatment(intervention) to some subjects while withholding it from others. Here dependent variable is pain level an independent variable is hydrotherapy(Polit and Beck 2010) Randomization or random assignment to study groups involves distribution of subject to either the experimental or control group on purely random or chance basis(Schneider and et al 2003) Sampling is the process of selecting a portion of the population to represent the entire population. It is subset of population elements. Simple random sampling can be used for this study. The members of the population are numbered and a number of them are selected using random numbers without replacing them. With this method each population member has equal chance of selection (Bowling 2009) Factors affecting sample size includes homogeneity of the population effect size cooperation and sensitivity of the measures. Quantitative researchers need to pay careful attention to the number of participants needed to achieve statistical conclusion validity. A procedure known power analysis(Cohen 1988) can be used to estimate sample size needs (Polit and Beck 2008). The sample size, effect size and the alpha level are the three major factors which determine the power.It can be defined as the capability to figure-out the statistically significant difference when the null hypothesis is in fact false,which means, power is your ability to find a difference when a real difference exists(psych.wisc.edu/henriques/power.html) Large samples are no assurance of accuracy however. There can be practical constraints such as subject availability cooperation level of participants time and resources can limit the sample size so that many studies are based on relatively small samples (Polit and Beck 2008) Data collection in experimental study dependents on the exact questions being investigated. The data collected can include data about the independent variable and data on a phenomenon(Ellis 2010). Interviews,physical examination or biological samples are the main data collection methods, researcher can also collect data from existing records. (Ellis 2010).Here a personal interview using a structured questionnaire can be used for the data collection. In this study we should do a pre test and post test. Pre test should be conducted before the intervention and a post test to assess the effect of hydrotherapy A major strength experiments is that they are practical in the real world it may be difficult if not impossible to conduct true experiments. In current era of healthcare consumerism patients are not always willing to relinquish control over there treatment condition. Another drawback of experiments is that unwillingness of people.( Gross and Fogg 2001) REFERENCES Ellis P.(2010),Understanding research for nursing students,Exeter;Learning matters Polit D. F and Beck C.T(2010),Essentials of Nursing Research:Appraising Evidence for Nursing Practice,7th edn;Lippincott Williams & Wikins. Nieswiadomy RS(2008), Foundations of nursing research, 5TH edn; new jersey: Pearson Leininger(1985), Qualitative research methods in nursing; W.B Sanders Company. Inc Holloway I & Wheeler(2002), Qualitative research in nursing, 2nd Edition, oxford Blackwell Science LTD Gerrish K and Lacey A (2010), The research process in nursing 6th edn, UK, Wiley-Blackwell Bowling A 2009, Research methods in Health;investigating health and health services, 3rd Edn, England, open university press Polit D.F and Beck C T(2008); Nursing research;Generating and assessing evidence for nursing Practice 8th Edn; Lippioncott, Williams & Wilkins Watson R, Mckenna H, Cowman S & Keady J (2008); Nursing research; Designs and method; Churchill Livingstone: Elsevier Schneider Z,Elliot D,Lobiond o-Wood G & Haber J (2003); Nursing Research: Methods critical appraisal and utilisation 2nd edn, Australia: Elsevier Pty Ltd University of Leeds: (iss.leeds.ac.uk †º home †º resources †º tutorial documents †º surveys). (No date)(Accessed on 25thof June,2013) University of Wisconsin-Madison:(psych.wisc.edu/henriques/power.html) (no date)(Accessed on 25thof June,2013) 13.University of Wollongong:(ro.uow.edu.au/cgi/viewcontent.cgi) (no date)(Accessed on 25thof June,2013) Dr Leonie Pihama, MÄ ori and Indigenous Analysis Ltd:(www.rangahau.co.nz/analysis/83/‎)(no date)(accessed on 25thJune). nformation Systems Foundations: Constructing and Criticising:(epress.anu.edu.au/info_systems/mobile_devices/ch04s03.html) (no date)(Accessed on 25thof June,2013) 16. M Mason -(www.qualitative-research.net †º Home †º Vol 11, No 3 (2010) (2010)(Accessed on 25thof June,2013)

The great gatsby- write about gatsby's personality Essay

The great gatsby- write about gatsby's personality - Essay Example To Nick, this quote dissects Gatsby’s personality and makes sense why the external world perceives him the way they do. Gatsby’s smile shows off his magnetic nature as well as giving the person receiving that smile the power of feeling special. Anyone who meets Gatsby cannot help to see only the good in him. What Gatsby does not realize is that his present life can never be fulfilled if he continues to live in his past. Gatsby puts overwhelming pressure on himself to live a certain way as a means to capture his true love’s heart, but ruins any chance of having a future in the meanwhile. A rags-to-riches story, Gatsby pulled himself out of the slums and now lives a life of luxury, throwing lavish parties in hopes to draw Daisy to one so that he can have a chance to win her love again. Anyone who is anyone knows of Gatsby’s lavish parties. He is notorious in New York as the man who has everything. Unfortunately, the means in which he was able to do it by was through bootlegging alcohol and other illegal activities, according to Tom, when he tells Daisy, â€Å"I picked him for a bootlegger the first time I saw him, and I wasn’t far wrong,† (Fitzgerald 282-290) as a desperate plea to convince her to stay with him. The truth is that Gatsby is a criminal. In fact, his real name is James Gatz. This criminal past trying to be erased by a new persona adds to the illusion that Gatsby lives a better life that he created for himself and also reinforces that it is one that can never lead to a lifetime of happiness. Gatsby’s â€Å"front† of bei ng this person that he is not has backfired. Even when Gatsby tells Tom that Daisy â€Å"never loved† him and only married Tom because he was â€Å"poor and tired of waiting† for him (Fitzgerald, 146) in front of Daisy, Daisy isn’t too quick to agree. Gatsby’s delusion that Daisy never loved anyone else but him goes to show that Gatsby could never live in reality. Gatsby’s misconception of

Talk about four ways in which sound is connected or disconnected from Essay

Talk about four ways in which sound is connected or disconnected from image in The Conversation. For example, do they jar, comp - Essay Example The article will discuss several ways in which sound disconnects or connected from the image in â€Å"The Conversation† by Francis Ford Coppola. Introduction According to Cowie in his text â€Å"Picking up The Conversation,† Francis’ career in film making involves more than twenty-five films all through a forty-year career his acclaims as a film director attribute to his participation with â€Å"The Godfather† movies. Such a positive affiliation, indeed, has served Francis well all through the challenges in his career and diminished the effects of his essential work. In 1974, Coppola wrote and was a director of â€Å"The Conversation,† which is a scene that went immensely unnoticed because of the immediate release of The Godfather Part 2. Even though, both of the scenes contributed to the nomination of Oscar for Coppola, the triumph of The Godfather contributed to the fading of The Conversation into a level of under appreciation (Cowie, Picking up T he Conversation). Nevertheless, in Dec. 2000 Paramount Home Video produced a new DVD of The Conversation. This digital video will enhance the film lovers to praise and see it as it provides the right format for a scene. This is because the film producer invested in attracting not only the visual sense of the viewers, but also their attention. Francis Coppola hardly limited channeling his creative traits towards the scene because he reinvented the utilization of sound. Just the same as Robert Altman did four years ago with MASH, Coppola accomplished his story because of sound application. The utilization of sound by Coppola in the film The Conversation is an aspect that makes the scene a unique and provides the audience with a cinematic experience. The Conversation, although released initially in 1974, it was perfect timing because it was when people had little faith towards the political institutions. The scene addresses, in broad, the increasing sense of people’s mistrust to wards the political institutions. Through a creative and masterful sound use, Francis takes a significant advantage of suspicion and apprehension of the audience. Even though, the occupation of Coppola puts him in a high position, his technology use is a cause of skewed perception in relation to reality. While looking for truth in the midst of the conversation in the film, Coppola utilizes self-engineering modern technologies. The technologies aim at eradicating every intrusive noise that might affect the quality of the recording. However, the use of self-engineering technology did harm to the film because it eliminated the realness aspect of the film’s conversation. Harry directs his assistant to pay extra attention towards the recording and little attention to what the characters are talking about. This is similar to the distinction that people draw between listening and hearing. As Harry hears the words from the conversation, he hardly listens to what the words mean. It is not because of Harry’s personality or his achievements that made him a mark; rather it is the sophistication of sound that made his opponents. More so, through the audio maneuvering, â€Å"The Conversation† does not only narrate Harry Cauls’ story, but also the American story. â€Å"The Conversation† by Francis Ford Coppola The producer of â€Å"The Conversation† created sound track separately from images and was inclusive of three elements:

The benefits and necessity of bilingual education in schools and Essay

The benefits and necessity of bilingual education in schools and universities - Essay Example The debate on bilingual education has been something that has been ongoing since the 1960s when the equality of different Minority groups in the United States was first asserted.This is because there were many American citizens who could not speak fluent English,but were quite fluent in other languages such as Spanish and FrenchToday there are many schools that champion the case of bilingual education. In some of such schools, the students are in English as well as their native languages. Comprehending the disadvantages as well as advantages of a bilingual education can help people to develop an impartial perspective on the necessity of giving the educational system a bilingual structure. While many people may think bilingual education is ineffective and unnecessary, I have discovered it to be otherwise. Why Bilingual Education is Unnecessary. There are many people who feel that the bilingual system of education will not be beneficial for English speakers in the long run. For example , in English speaking nations, there are people who feel that adopting a bilingual system will compromise the students’ grasp of the English language. To others, it appears that adopting a bilingual system is giving too much power to foreign elements within their own nation (Sizeron). To them, the effort to become a part of the society lies with the foreigners who relocate to English speaking nations. The citizens of an English speaking nation should not be inconvenienced in different ways in order to make foreigners feel that they are accepted by society. Another reason why some people may be against bilingual education in their schools is because they do not wish to be forced to start learning new languages. Bilingual education systems inevitably result in a larger fraction of citizens who speak two languages clearly. From there, it is quite easy for the reigning government to make the decision that it will have an additional national language. This means that it is not jus t the students who will be compelled to learn the new language. The English speaking citizens of the nation will also be compelled to learn the new language in order to be able to navigate around public systems that may start operating in two different languages. Not all people are talented and able to learn other languages easily. For many people, learning a new language is quite a difficult undertaking. Another reason why some people oppose the structuring of a bilingual educational system is that it might cost more than can be dedicated to expanding a nation’s educational system. Using different languages in different nations, states, or cities in the same region means that there will have to be different facilities to cater for the speakers of all languages. This will also further strain the educational systems of most countries which do not even fully cover the existing programs (National Latino Children’s Institute). Opponents of the bilingual educational system also often stress that children may be confused if they are suddenly required to start speaking different languages and master all of them. From their point of view, subjects such as English can only be mastered through the ‘immersion’ method. This means that the student has to have the opportunity to speak this language in all settings in order to become accustomed to it. Introducing a new language means that students will have to learn two languages concurrently. This could mean that none of the languages become well mastered. Why Bilingual Education is Necessary. According to the proponents of bilingual education, there are many reasons why bilingual educational systems are beneficial both for students as well as the general society. In addition to allowing children to develop a feeling for cultural pluralism, there are academic as well as cultural benefits associated with speaking two languages right from childhood. According to a research documented by

Analyzing Falculty Characteristics in Adult Learning Essay

Analyzing Falculty Characteristics in Adult Learning - Essay Example This paper is an examination of the various characteristics in which a faculty member responsible for teaching adults must have, in order to be an effective teacher. This is for both an online and on-ground teaching and learning environment. This paper will specifically identify these characteristics, and use examples in supporting the various facts identified. Palis and Quiros (2014) denotes that a variety of models and theories are developed for purposes of explaining this concept of adult learning. One such theory is andragogy, and this theory was developed by Malcolm Knowles in the year 1973 (Fraser and Hyland-Russell, 2011). In meeting the objectives of this paper, the researcher will have to identify the characteristic of an online learner, as well as identify a desirable characteristic of a faculty member aimed at satisfying the needs of the adult learner, based on his or her identified characteristic. Andragogy is a theory designed for purposes of addressing the learning needs of adults, and it bases its assumptions that there is a considerable difference in the learning characteristics depicted between adults, and children (Palis and Quiros, 2014). To understand the various characteristics needed for adult teachers, it is first important to understand the needs of adult learners, and their characteristics. Knowles, Holton and Swanson (2011) in his theory of andragogy identifies five major assumptions and characteristics of adult learners. One characteristic of an adult learner is that they have the ability of independently directing his own learning. Knowles, Holton and Swanson (2011) denote that adult learners are always self-reliant, autonomous, and independent. On this basis, they always have a self-directed goal that they aim to achieve. Based on this characteristic of adults, Fraser and Hyland-Russell (2011) denotes that an online teacher has to act as a facilitator, and th eir responsibility should be to guide the adult

Critical Essay Example | Topics and Well Written Essays - 1000 words

Critical - Essay Example They established a system to investigate the membrane dynamics of the events occurring at the interface of HIV-1 infected and receptor expressing T cells. The authors selected appropriate CD4+/CXCR4+ T cell lines for the study and maintained them in an antibiotic supplemented cell growth medium and established the purity of the cell lines at a level greater than 90% by flow cytometry by indirect immunofluorescence. These CD4+ cells were labeled as target cells. Jurkat CE 6.1 cells infected with HIV-1 strain LAI were used as effector cells. After phenotyping the cells for surface Env and CD4 expression, the effector and the target cells were mixed in equal quantities on cover slips, with or without inclusion of mAb (monoclonal antibody). For specific time intervals after which they were fixed and stained. Kinetic studies were conducted in separate experiments by immunostaining of conjugates for specific mAbs. Appropriate software and methods for confocal microscopy and photography wer e employed. Inhibition of cytoskeletal rearrangement and signaling were studied in separate experiments. Cell-cell fusion assay and transmission electron microscopy were the other experiments conducted. The authors have been able to develop a novel system to study the cell to cell dissemination of HIV-1 by demonstrating a close packing and concentration of the virus particles in the plasma membranes of both effector and target cells, though they could not actually demonstrate the formation of a synapse between the two cells, which they suggest is the most likely mechanism. The role of an actin dependent mechanism in the Env-dependent recruitment of CD4, CXCR4, and LFA-1 has successfully been demonstrated. This cytoskeleton dependent receptor movement during infection of the target cells along with formation of an adhesive junction has been proposed as the likely