Doctoral Dissertations in Economics One-Hundred-Eighteenth Annual List

The list below specifies doctoral degrees conferred by U.S. and Canadian universities during academic year July 2020 to June 2021. Lists of degree recipients and subject classifications are provided by the university. Note: Dissertations without classifications may be found under “Y Miscellaneous Categories.”

Comparisons of Order Statistics from Heterogeneous Poisson and Geometric Distributions

In this article, we compare extreme order statistics through vector majorization arising from heterogeneous Poisson and geometric random variables. These comparisons are carried out with respect to usual stochastic ordering. AMS 2010 subject classifications: 62G30, 60E15, 60K10

Confidence Intervals After Variance Stabilization May Go Head-to-Head with Exact Confidence Intervals: A New Class of Illustrations

We begin with an overview on variance stabilizing transformations (VST) along with three classical examples for completeness: the arcsine, square-root and Fisher's z-transformations (Examples 1–3). Then, we construct three new examples (Examples 4–6) of VST-based and central limit theorem (CLT)’based large-sample confidence interval methodologies. These are special examples in the sense that in each situation, we also have an exact confidence interval procedure for the parameter of interest. Tables 1–3 obtained exclusively under Examples 4–6 via exact calculations show that the VST-based (a) large-sample confidence interval methodology wins over the CLT-based large-sample confidence interval methodology, (b) confidence intervals’ exact coverage probabilities are better than or nearly same as those associated with the exact confidence intervals and (c) intervals are never wider (in the log-scale) than the CLT-based intervals across the board. A possibility of such a surprising behaviour of the VST-based confidence intervals over the exact intervals was not on our radar when we began this investigation. Indeed the VST-based inference methodologies may do extremely well, much more so than the existing literature reveals as evidenced by the new Examples 4–6. AMS subject classifications: 62E20; 62F25; 62F12

On a Class of Transmuted Distributions to Model Survival Data with a Cure Fraction

Modelling time to event data, when there is always a proportion of the individuals, commonly referred to as immunes who do not experience the event of interest, is of importance in many biomedical studies. Improper distributions are used to model these situations and they are generally referred to as cure rate models. In the literature, two main families of cure rate models have been proposed, namely the mixture cure models and promotion time cure models. Here we propose a new model by extending the mixture model via a generating function by considering a shifted Bernoulli distribution. This gives rise to a new class of popular distributions called the transmuted class of distributions to model survival data with a cure fraction. The properties of the proposed model are investigated and parameters estimated. The Bayesian approach to the estimation of parameters is also adopted. The complexity of the likelihood function is handled through the Metropolis-Hasting algorithm. The proposed method is illustrated with few examples using different baseline distributions. A real life data set is also analysed. AMS subject classifications: 62N02, 62F15

Stress–Strength Reliability for the Unit-Lindley Distribution with an Application

The unit-Lindley distribution has recently been introduced in the literature as an alternative to the beta and the Kumaraswamy distributions in support (0,1). This distribution enjoys many virtuous properties over the mentioned distributions. In this article, we address the issue of parameter estimation from a Bayesian perspective and study relative performance of different estimators through extensive simulation experiments. Significant emphasis is given to the estimation of stress–strength reliability employing classical as well as Bayesian approach. Application of an intuitive metric of discrepancy derived from stress–strength reliability is considered and computed for two different geographic regions with respect to an important public health indicator. AMS 2010 subject classifications: 62F10, 62P05.

Doctoral Dissertations in Economics One-Hundred-Seventeenth Annual List

The list below specifies doctoral degrees conferred by U.S. and Canadian universities during academic year July 2019 to June 2020. Lists of degree recipients and subject classifications are provided by the university. Note: Dissertations without classifications may be found under “Y Miscellaneous Categories.”

Comparing Two Treatments in Two Period Repeated Measurement Design

This work deals with nonparametric test procedures for comparing effects of two treatments in two period parallel group design, where each subject receives the same treatment over the two periods. The procedures are based on consistent estimators of relative treatment effects in each period and that of covariate adjusted effects with responses in period 1 as covariates. Related asymptotic results are obtained followed by necessary simulation studies to evaluate the performance of the tests. AMS 2010 subject classifications: 62G10 62J15

Collaboration clusters, interdisciplinarity, scope and subject classification of library and information science research from Africa: An analysis of Web of Science publications from 1996 to 2015

This study investigated the trends in the scope and subject classifications of library and information science research from authors that are affiliated with institutions in Africa. Library and information science journal articles and conference proceedings from the 54 African countries that were published between 2006 and 2015 and indexed in the Web of Science were retrieved for the study. After the removal of non-relevant articles and articles that were not available online, the library and information science publications were classified based on subject and scope. Results from the analysis of author keywords, country of affiliation, subject and scope classification were also visualized in network maps and bar charts. Frequency analysis shows that though computer science had the most profound influence on Africa’s library and information science research, its influence came to prominence in 2004. Furthermore, North African countries exhibited features that are different from the rest of Africa; they contributed most on core computer classifications while other African countries focused more on the social science-related aspects of library and information science. Unlike other regions in Africa, the North African countries also formed a dense collaboration cluster with strong interests in subjects that are conceptual and global in scope. The collaboration clustering analysis revealed an influence of some colonial languages of as a basis for forging strong collaboration between African and non-African countries. On the other hand, African countries tend to collaborate more with countries in their regions. Lastly, human computer interaction and library and information science history subject classifications were almost nonexistent. It is recommended that further studies should investigate why certain subject classifications are not well represented.

DYNAMICS OF PEDAGOGICAL TERMINOLOGY IN MODERN EDUCATIONAL PROCESS: STRUCTUAL-SEMENTIC ASPECT

This article investigates the functioning of pedagogical terminology in the modern educational process; the paper deals with the problems of scientific terminology study, particularly of pedagogical. It characterizes the specific character of pedagogical terminology, and highlights the new concepts of educational process XX – XXI century (new terms). Subject classifications are analyses along with the languages used to complete the pedagogical terminology. It highlights the stages of formation and the manner of adaptation of these terms in the Ukrainian language. Models of domestic pedagogical terminology are isolated, and the system relations of these terms at the level of polysemy and synonymy are examined, determining the structure and status of their relationship to speech and the cases of its change in various terms – interlanguage correlate. The most common main tasks of ordering and unification of the modern educational process of pedagogical terminology have been described. The pedagogical term has been investigated as a system unit that develops under the influence of intralinguistic and extralinguistic factors. Feasibility of emergence of new term for modernization of all branches of pedagogical science is substantiated. The influence of the professional vocabulary on the logic of scientific thinking and the necessity of systematization terminological systems at the present stage is outlined. Some structural and semantic peculiarities of the functioning of pedagogical terms are investigated.

Doctoral Dissertations in Economics One-Hundred-Sixteenth Annual List

The list below specifies doctoral degrees conferred by U.S. and Canadian universities during academic year July 2018 to June 2019. Lists of degree recipients and subject classifications are provided by the university. Note: Dissertations without classifications may be found under “Y Miscellaneous Categories.”