Magister Educationis - MEd / This study1 which followed immediately after a sub-dissertation entitled "An investigation into the problems and pitfalls inherent in the teaching and learning of Xhosa in the .Senior Secondary schools of Transkei" and which was part of the re~earcher's Bachelor of Education academic study programme, was designed to probe deeper into the problems discoverd earlier in the study mentioned above, and to further investigate the root causes of the high rate of failure in Xhosa which has become a source of worry to the Transkei Education Department today. To gather all the data needed during investigation, use of questions and intervi•ews was made. Questionnaires were sent to Std 10 pupils, Std 10 teachers, Std 10 External Examiners and libraries. Files of the Xhosa Subject Commit.tee, the Xhosa Action Committee, the Nguni and Sesotho Language Board and the Transkei Examinations Board were consulted with a view to extracting information that would reveal records pertaining to high failure rate in Xhosa. After observing for several years, as a teacher and examiner of Xhosa language, the performance of Std 10 pupils writing Xhosa, the researcher came tot.he conclusion that there was indeed high failure rate in Xhosa. The period 1981 to 1985 became the focus of his attention because it was the worst in the history of the Transkei Std 10 results in Xhosa. Records of the Transkei Examinations Board reflected that the mean average during that period was only 46'l. (See· Table 1.1). The poor results also became the source of worry to the Department of Education which took steps to remedy the situation by forming a special Committee known as the Xhosa Action Committee which was given the task of devising ways and means of improving the Std 10 Xhosa results as from 1985. The Department further sent out circulars to all schools in Transkei threatening to take disciplinary measures against Std 10 Xhosa teachers whose candidates had failed to .secure less than 50% aggregate in the external examinations.

This dissertation empirically studies market design based centralized school choice. Chapter 1 explores the dynamic relationship between school choices made at different educational stages and how it affects racial segregation across schools. It uses New York City (NYC) public school choice data to ask: "How does the middle school that a student attends affect her high school application and assignment?" The paper takes two approaches to answer the question. First, it exploits quasi-random assignments to middle schools generated by the tie-breaking feature of the admissions system. It finds evidence that students who attend high-achievement middle schools apply and are assigned to high-achievement high schools. Second, based on this empirical evidence, the paper develops and estimates a novel dynamic two-period model of school choice to decompose this effect and analyze the equilibrium consequences of counterfactual policies. In the model, students applying to middle schools are aware that their choices may affect which high schools they eventually attend. Specifically, the middle schools that students attend can change how they rank high schools (the application channel) and how high schools rank their applications (the priority channel). It finds that the application channel is quantitatively more important. Using the estimated model, the paper asks if an early affirmative action policy can address segregation in later stages. It finds that a middle school-only affirmative action policy can alter students' high school applications and thus their assignments, contributing to desegregating high schools. This finding suggests that early intervention in the form of middle school admissions reform can be a useful tool for desegregation. Chapter 2 studies the relationship between the popularity of selective exam schools and their academic performance measures. NYC specialized high schools are highly selective and popular among students and parents. Nevertheless, the reason why those schools are so popular compared to non-specialized high schools has not been studied yet. This paper aims to answer the question in the context of academic performance by studying the relationship among three factors: preference of specialized high schools applicants, peer qualities, and causal effectiveness of those schools. First, a unique feature of the NYC public high school admission system enables linking applicants' preferences on specialized high schools and non-specialized high schools and hence jointly estimating those using their rank-ordered lists. Next, it estimates the value-added measures of high schools and finally links them back to the estimated preference in the first step. The paper finds that the additional valuation that students/parents put on specialized high schools relative to non-specialized high schools is mostly related to the higher peer quality of specialized high schools. Chapter 3 develops a method of inferring students' preferences from school choice data. Recent evidence suggests that market participants make mistakes (even) in a strategically straightforward environment but seldom with significant payoff consequences. This paper explores the implications of such payoff-insignificant mistakes for inferring students' preferences from school choice data. Uncertainties arise from the use of lotteries or other sources in a typical school choice setting; they make certain mistakes more costly than others, thus making some preferences---those whose misrepresentation would be more costly and would thus be avoided by students---more reliably inferable than others. The paper proposes a novel method of exploiting the structure of the uncertainties present in a matching environment to robustly infer student preferences under the Deferred-Acceptance mechanism. Monte Carlo simulations show that the method is superior to existing alternative approaches.

Factors in the Admissions Process Influencing Persistence in a Master’s of Science Program in Marine Science. Melissa L. Dore, 2017: Applied Dissertation, Nova Southeastern University, Abraham S. Fischler College of Education. Keywords: academic persistence, admission counseling, graduate students, marine science education, examinations This applied dissertation was conducted to provide the graduate program in marine sciences a valid predictor for success in the admissions scoring systems that include the general Graduate Record Exam. The dependent variable was persistence: successfully graduating from the marine sciences master’s programs. This dissertation evaluated other values including the applicant’s age, gender, undergraduate GPA, letters of recommendation, and acceptance level (Accepted with Academic Requirement (probation) or Full Acceptance). The writer statistically showed that two values proved most significant in defining a student’s persistence: undergraduate major GPA and age when entering the program. An analysis of the data allowed the marine science master’s programs to develop an index to assist students to succeed in the program as well as reduce the time to completion.

Language is the all-encompassing term used in many places and having various denotations. For this reason language has uses, too. Oral language is used as a principal factor to determine cultural disadvantage and is the primary medium of instruction in the school setting. Language operates as the intangible aspect in measurements of intelligence. The term 'language development' is used whenever one refers to the merits of federally funded preschool projects and is accepted without definition while the counter term 'linguistics' brings confusion in the mind of many classroom teachers and administrators. Commercial materials carry the label "linguistic method" or a "language development program" for a specific population. For educators 'language' is a loose, all powerful term which needs to be limited in meaning to a specific set of principles.

The purpose of this study is to explore college students' breast and testicular cancer self-examination beliefs and practices using constructs of the Health Belief Model. Over a 1.6 million Americans are diagnosed each year with cancer. With that, over 200,000 women will be diagnosed with breast cancer while nearly 8,000 men will develop testicular cancer. If cancer is diagnosed and treated in the early stages, it will greatly increase the chance of survival and quality of life. One of the easiest methods to discover cancer early is to perform self-examinations. Self-examinations are safe, quick, private, and do not require a visit to the doctor. This study will explain reasons why some college students perform breast (for women) and testicular (for men) self-examinations while others choose not to perform self-examinations. A survey of 386 (202 female and 184 male) college students was conducted at a midsize university located in the Midwest. Participants were asked to complete Champion's Health Belief Model Scale. In addition, participants were asked to complete two open-ended survey questions regarding their self-examinations beliefs and behaviors. Overall, 129 (34%) participants performed self-examinations. Of those 129, females were more likely to perform self-examinations than males. In addition, females were also more likely to be taught how to perform self-examinations. Participants were more likely to perform self-examinations if felt susceptible to developing cancer and if they felt comfortable in their ability to properly perform one. Finally, participants were also more likely to perform self-examinations if they were given a cue to action (i.e. their doctor told them to or a relative had cancer). The significance of the data will help educators and health care professionals develop health programming to address the barriers that keep college students from performing self-examinations. In particular, there needs to be tailored programming for males because they are more susceptible to developing testicular cancer during their college years than any other time in their lives. Finally, a social marketing campaign could be an easy intervention to reach the masses. A Social marketing campaign would be a beneficial way to raise awareness, educate students on cancer in college, and show the simple steps in performing self-examinations.

Close to a decade ago Hong Kong completed the implementation of a New three-year Senior Secondary (NSS) curriculum by introducing the Hong Kong Diploma of Secondary Education (HKDSE) examination. Because mathematics is one of the core subjects intricately involved in this education reform, it is necessary to evaluate the connection between the Hong Kong S1 – S6 mathematics curriculum and the mathematics compulsory portion of the HKDSE examination. A curricular alignment study can provide insight to policymakers, students, teachers, and schools concerning agreement between the intended curriculum and the assessed curriculum. This research study adopted a combination of criteria from the Achieve’s alignment protocol and Webb’s alignment method to determine the alignment between the Hong Kong S1 – S6 mathematics curriculum and the mathematics compulsory part of the 2018 HKDSE examination. A panel of three mathematics educators identified the assessment item/learning objective match, classified the content centrality value of each match, and identified the Depth of Knowledge of each assessment item. The alignment results indicate a wide range from no to strong indication of alignment between the Hong Kong S1 – S6 mathematics curriculum standards and the 2018 HKDSE examination. Areas of misalignment were found within the Measures, Shape and Space strand and the Data Handling strand of the Hong Kong S1 – S6 mathematics curriculum, where both show deficiencies in meeting the minimum benchmark for the categorical concurrence and the range of knowledge correspondence.

This paper investigates the viability of a machine learning model based on similarities in text structure compared to one based on statistical properties in the text to detect cheating in digital examinations. The machine learning model comparing similarity in text structure used Levenstein distance and the one comparing statistical text properties compared cosine distance between word vectors. The paper also investigates whether security has been a driving force impacting the industrial dynamics of the digitalization of examinations in Sweden. This is done using the multi-level perspective framework and interviewing users of a digital examination platform. The results show that the machine learning model based on statistical text properties has a higher accuracy, recall, precision and F-score. Nothing is concluded from this, however, due to discussion of validity of the results from the machine learning model based on the similarities in text structure. The analysis of the industrial dynamics shows that security has been a driving force towards digitalization.

The purpose of this thesis is to determine, as far as possible, the extant to which the language-factor tests included in present psychological examinations administered to freshmen at the Collage of the Pacific are reliable as factors contributing to an estimate of the capacities of the individuals examined. This necessitates a study of both the gross and language-factor tests scores In making the study, the results of examinations given in three years,—1925, 1926, and 1928, —were utilized. The total number of cases included in these years was 560, a sufficient number to warrant the placing of considerable reliance upon the findings resulting from the study.

81% of the population in sub-Saharan Africa relies on charcoal and firewood to cover their energy needs for cooking. In Africa charcoal is usually produced by burning tree in a traditional kilns and then the food is cooked with a carbon-fired stoves indoors. All that links to three problems; deforestation, health issues and overpopulation, all of which can be reduced with a pellet cooking stove. Zambia in sub-Saharan Africa consumes charcoal equivalent to 6,089,000 tons of firewood each year. The total consumption of firewood being 13,967,000 tons per year. That leads to harvesting rate between 250,000 and 300,000 hectares each year making Zambia having one of the world’s fastest deforestation rates. Deforestation can be reduced by using the energy from the wood more efficient. In charcoal production and heating with charcoal about 72-86% of the produced energy is released to the atmosphere resulting the efficiency rate of only 14-28%. In comparison pellet production efficiency rate is 70-83%. Therefore if fuel pellets are used for cooking purposes energy instead of charcoal efficiency increases by 42-69% leading to lower need of wood material to cover equal energy demand. In this study five hardwood species and a softwood reference material from Zambia has been evaluated for fuel pellet production purposes. Evaluated hardwood species are Umsafwa, Umupundu, Umusamba, Umwenge and Umutondo. Reference material is already in use for pellet production in Zambia. Evaluation includes pellet production in a single pellet press, post production testing and X-ray examinations for tree different moisture contents; 8%, 10% and 12%. Pellet production includes friction energy, maximal friction energy and compression energy measurements. Post production testing includes density and hardness testing as well as X-ray examinations that indicate the amount of produced ash in the combustion process. High compression energy means higher energy cost in production so low compression energy is a desired property. Umupundu was the only wood species whose moisture content had no effect on the amount of compression energy. Umsamba and Umutondo gave the lowest and Umupundu and Umsafwa the highest compression energies of the tested hardwood pellets. Almost all of the friction energies of the tested materials were close to one another. The biggest exception was Umsafwa with 8% moisture content which had 38% higher friction energy than the reference material on average in this study. The values of the friction energy are low compared with other studies but within the reasonable limits compared with the reference material. A clear linear relationship was found between the friction energy and Fmax, so the friction energy directly implies the magnitude of the force of Fmax. A high hardness value is desirable because high hardness links directly to pellets high durability. All hardwood species tested were harder than the reference material. Ash significantly shortens the service life of the pellet stove, therefore it is desirable to produce as little ash as possible. Umsafwa and Unwenge has the lowest amount of metals that indicates the smallest amount of ash formed when burning pellets. Umsafwa with MC of 12% and Umwenge with MC of 10% are the best mix based on this study. / 81% av befolkningen i Afrika söder om Sahara är beroende av träkol och ved för att täcka sitt energibehov för matlagning. I Afrika produceras träkol vanligtvis genom att träden bränns i en traditionell ugn och sedan tillagas maten med en koleldad spis inomhus. Det leder till tre problem; avskogning, hälsoproblem och överbefolkning, allt detta kan minskas med en pellets spis. I Zambia förbrukar träkol motsvarande 6 089 000 ton ved varje år, och den totala förbrukningen av ved är 13 967 000 ton per år. Det leder till en avverkningstakt på mellan 250 000 och 300 000 hektar varje år vilket gör att Zambia har en av världens snabbaste avskogningshastigheter. Avskogningen kan minskas genom att energin från veden används mer effektivt. Vid produktion och användning av träkol frigörs cirka 72-86% av den producerade energin till atmosfären, vilket resulterar i en användningsgrad på endast 14-28%. Vid pelletstillverkning är motsvarande värde mycket högre, 70-83%. Om bränslepellets används istället för kol för matlagningsändamål ökar därför energieffektiviteten med 42-69%, vilket leder till lägre behov av trämaterial för att täcka lika energibehov. I denna studie har fem lövträslag och ett referensmaterial av barrträd från Zambia utvärderats för produktion av bränslepellets. De utvärderade lövträslag är Umsafwa, Umupundu, Umusamba, Umwenge och Umutondo. Referensmaterialet används redan för pelletstillverkning i Zambia. Utvärderingen inkluderar pelletsproduktion i enpetarpress, efterproduktionstestning och röntgenundersökningar för trädens olika fukthalter; 8%, 10% och 12%. Pelletsproduktion omfattar friktionsenergi, maximal friktionsenergi och mätningar av kompressionsenergi. Testning efter produktion inkluderar densitets- och hårdhetstestning samt röntgenundersökningar som indikerar mängden producerad aska i förbränningsprocessen. Hög kompressionsenergi innebär högre energikostnad i produktionen alltså låg kompressionsenergi är en önskad egenskap. Umupundu var det enda träslag vars fukthalt inte hade någon effekt på mängden kompressionsenergi. Umsamba och Umutondo gav de lägsta och Umupundu och Umsafwa de högsta kompressionsenergierna av de testade lövträpellets. Nästan alla friktionsenergier för de testade materialen låg nära varandra. Det största undantaget var Umsafwa med 8% fukthalt som hade 38% högre friktionsenergi än referensmaterialet i genomsnitt i denna studie. Värdena på friktionsenergierna är låga jämfört med andra studier men inom de tillåtna gränserna jämfört med referensmaterialet. Ett tydligt linjärt beroende hittades mellan friktionsenergin och Fmax, således friktionsenergin antyder direkt storleken på kraften hos Fmax. Ett högt hårdhetsvärde är önskvärt eftersom det kopplas direkt positivt till pellets hållbarhet. Alla lövträslag som testades var hårdare än referensmaterialet. Ask förkortar pelletskaminens livslängd avsevärt, därför är det önskvärt att producera så lite aska som möjligt. Umsafwa och Unwenge har den lägsta mängden metaller som anger den minsta mängd aska som bildas vid förbränning av pellets. Umsafwa med MC på 12% och Umwenge med MC på 10% är den bästa mixen baserat på denna studie.

Statistics show that boys perform better in mathematics tests than girls. In order to make a refined assessment of the magnitude of gender differences in mathematics performance, a study was made of one thousand 16+ mathematics scripts to find the precise topics on which girls and boys differ significantly in performance. These concepts were found to be concerned with scale or ratio, spatial problems, space-time relationships and probability questions. Differences were found in performance between girls and boys at each ten-percentile level through the ability range. A longitudinal study also revealed differences in mathematics 'performance through the years of secondary education. There is no convincing evidence that the discrepancy can be accounted for by innate or genetic reasons. Intervention programmes have been found to improve the performance of girls in the weak areas of spatial awareness, proportionality and problem solving. In addition, a study was made of gender attitudes towards mathematics. Ten secondary schools were surveyed and the results revealed a marked decrease in the attitudes of third and fourth form girls. During these difficult adolescent years girls and boys are susceptible to strong internal and external pressures. Corresponding differences were also found across the ability range. These social pressures are concerned with teacher influence, social interaction, type of grouping, sex stereotyping, choices, teaching materials and careers advice.