Simultaneous Edit and Imputation for Household Data with Structural Zeros

Multivariate categorical data nested within households often include reported values that fail edit constraints---for example, a participating household reports a child's age as older than his biological parent's age---as well as missing values. Generally, agencies prefer datasets to be free from erroneous or missing values before analyzing them or disseminating them to secondary data users. We present a model-based engine for editing and imputation of household data based on a Bayesian hierarchical model that includes (i) a nested data Dirichlet process mixture of products of multinomial distributions as the model for the true latent values of the data, truncated to allow only households that satisfy all edit constraints, (ii) a model for the location of errors, and (iii) a reporting model for the observed responses in error. The approach propagates uncertainty due to unknown locations of errors and missing values, generates plausible datasets that satisfy all edit constraints, and can preserve multivariate relationships within and across individuals in the same household. We illustrate the approach using data from the 2012 American Community Survey

Evaluating the perception of thermal environment in naturally ventilated schools in a warm and humid climate in Nigeria

Field study was conducted in naturally ventilated primary school buildings in a warm and humid environment in Imo State, Nigeria to determine the thermal comfort perception of young children (aged 7–12 years) and to understand the thermal conditions in the classrooms. The comfort temperature was investigated in two types of classroom buildings during the rainy and dry seasons from October 2017 to May 2018. Approximately 7050 completed valid questionnaires were collected from 330 young children repeatedly surveyed twice a day. The children answered comfort questions at the same time the indoor and outdoor thermal variables were being measured. Results indicated that the combined ‘open-space’ classrooms produced a neutral temperature of 28.8°C with comfort range, 25.2–32.3°C. The neutral temperature of the combined ‘enclosed-plan’ classrooms is 28.1°C with 25.8–30.5°C as the comfort range. The differences in the comfort perceptions may be attributed to the differences in the architectural characteristics of both categories of classroom buildings. High temperature tolerance was shown by the participating children in the study area. This article, therefore, suggests that installing air conditioning in primary schools in the warm humid environment in Nigeria may not be necessary as it could lead to unnecessary energy consumption and carbon emission

Use of electronic resources by postgraduate students in University of Cape Coast

The study investigates the use of electronic resources by postgraduate students in University of Cape Coast (UCC). It specifically targets first year postgraduate students of UCC. Awareness, usage, training, and access were explored. A survey method was employed and a structured questionnaire was utilized to solicit data. The findings revealed that, though students are aware of electronic resources, they do not fully utilize them to support their academic pursuit due to poor level of information literacy skills. However, few students had not participated in all information literacy skills training organized by the library. Results from the study showed that, significant number of postgraduate students do access electronic resources when on campus and mostly use electronic devices such as laptops, ipad, desktop computers, and mobile phones. The findings indicated that students use the electronic resources to complete assignments, write project work, to update lessons note, for research, and update themselves on new information in their fields of study. It was recommended that a structured curriculum should therefore be established as part of postgraduate students’ normal lecture periods where time is allocated on their time table for electronic resource training, and if possible, credited to their academic performance ratings or grading

Hazard Perception and Demand for Insurance Among Selected Motorcyclists in Lagos, Nigeria

This study examines hazard perception effects on the demand for insurance withspecial focus on motorcycle riders in Lagos state. For this purpose, the researchershave been able to examine selected hazard perception determinants and theireffects on the insuring attitude and desire of motorcycle riders. An explanatoryresearch design was employed and a convenience sampling type of the nonprobabilitysampling technique was adopted.  Data was gathered by interviewsconducted at motorcycle parks along the Lagos-Badagry expressway.  The sampleconsisted of 126 respondents made up of commercial motorcycle riders within thesample areas. Data collected was analysed using multiple regression technique.The study was able to establish some level of contributory linkage between hazardperception and demand for motorcycle insurance. The findings show that whiledread and trust both appeared to have significant effect, publicity and controllabilityboth have positive contributory effect; furthermore, choice expressed an inverserelationship with demand for insurance among the motorcycle riders. The studytherefore recommends pre-loss and post-loss measures among the motorcycleriders so that unforeseen motorcycle risks can be managed. Also, insurancecompanies should endeavour to invest more on enlightening the motorcycle riders in order to lessen their dread of loss outcome, and thus, design policy that can instil trust in motorcycle riders in insurance as a loss control measure

The International Criminal Court\u27s Ineffective Enforcement Mechanisms: The Indictment of President Omar Al Bashir

Part I introduces the Rome Statute and highlights the portions of the Rome Statute that leave the ICC vulnerable to member states that violate the Rome Statute without any clear punishment for the violation. In particular, Part I focuses on the expansive jurisdiction and the limited enforcement mechanisms that the Rome Statute bestows upon the ICC. Part II illustrates the ICC\u27s vulnerability under the Rome Statute by using the example of the ICC\u27s indictment of President Al Bashir and examining the existing tension between the ICC and the African Union ( AU ). Part III argues that the ICC must strengthen or expand its enforcement mechanisms in order to become a legitimate force in the international forum. It suggests three possible ways to reach this goal: suspension, expulsion, and implementation of United Nations ( UN ) Security Council sanctions

After-school sport for children: Implications of a task-involving motivational climate

It could be argued that youth sport is one of the most pervasive and popular activities engaging girls and boys in their “free time ” in contemporary American society. Youth sports are those involving young people between the ages of 6 to 18 years that are adult organized and/or supervised. After-school youth sports encompass extracurricular (interscholastic) athletic activities, agency-sponsored community sports (e.g., Little League), club sports, and recreational sport programs organized by recreation departments. Less than 20 years ago, it was estimated that 25 million out of approximately 47 million youngsters participated in some type of organized/supervised youth sport in the United States. Today, participation estimates suggest that 47 million boys and girls (from what census data indicate to be a population of close to 52 million) have joined, at one point or another, an after-school sport program (Ewing & Seefeldt, 2002). Although more boys still engage in after-school sport than girls, the greater involvement of females in sport over the past two decades has certainly contributed to the observed increase in overall participation percentages. With respect to other issues of diversity, the world of after-school sport is multi-racial/ethnic with young people from various cultural backgrounds represented among participants. Females o

Demographic and Economic Pressure on Emigration Out of Africa

Two of the main forces driving European emigration in the late nineteenth century were real wage gaps between sending and receiving regions and demographic booms in the low-wage sending regions (directly augmenting the supply of potential movers as well as indirectly making already-measured employment conditions less attractive). These two features are even more prominent in Africa today, but do or can Africans respond to them with the same elasticity as in the days of 'free' migration? Our new estimates of net migration and labor market performance for the countries of sub-Saharan Africa suggest that exactly the same forces are at work driving African across-border migration today. Rapid growth in the cohort of young potential migrants, population pressure on the resource base, and poor economic performance are the main forces driving African migration. A century ago, more modest demographic forces in Europe were accompanied by strong catching-up economic growth in the low-wage emigrant regions, followed by a slowdown in already-modest demographic growth. Yet, migrations were still mass. In Africa today, economic growth has faltered, its economies have fallen further behind the high-wage OECD leaders, and there is a demographic speed up in the making. Our estimates suggest that the pressure on emigration out of Africa will intensify, manifested in part by a growing demand for entrance into high-wage OECD labor markets.