The effect of weight function on hypothesis testing in weighted sampling

In this paper the problem of statistical hypothesis testing under weighted sampling is considered for obtaining the most powerful test. Some simulated powers of tests, using the Monte Carlo method, are performed. Using a convenient sample of the specialist physicians of Social Security Organization of Ahvaz in Iran, two weighted samplings versus random sampling are tested. Among the three mentioned sampling, the size-biased sampling order 0.2 is more appropriate for the mechanism of data collection.     

Democracy in the Israeli education system: the case of the English matriculation exam

This research investigates the extent to which indices of social justice and democratic rights are expressed in Israel in the crucial national English matriculation exam, as perceived by Palestinian Arab high school pupils studying for these exams and their English teachers. The research employed Critical Theory as a paradigm, case study as a research tradition, and semi-structured interviews and questionnaires as methods. Shohamy’s Democratic Assessment Model provided the basis for the questionnaire items and the interview questions. Freire’s Critical Pedagogy framework was consulted to interpret the findings of the research. The factual findings revealed a proper application of democratic principles in the environment of the national English as a Foreign Language (EFL) testing, yet only with regard to technical matters, while the environment appears to be undemocratic with regard to other essential and critical issues. The conceptual conclusions suggest that when democracy is bent by the governing authority and shaped to serve its interests, it is not only minorities’ education that is affected, but also the education of the majority, and that democracy itself needs to be aided by civil society to ensure a more egalitarian educational reality for all.     

A Regression Analysis of Motivations for Saudi University Male Student Volunteers

Abstract

As a major national asset for promoting social development, volunteer groups have grown rapidly worldwide and have brought significant benefits to individuals, communities, and society in general. Volunteering is encouraged and common among Muslims in the Middle East, but there is rare study on why they volunteer. This study used multiple regression to explore what motivates Saudi male university students to volunteer with a sample of 223 subjects. The results show that all predictor variables such as pro-social personality, values function, career function, social function, enhancement function, protective function, and learning function of volunteering, community identity, institutional facilitation, and Islamic cultural motivation, are statistically significantly correlated to students’ volunteering intentions, but these factors contribute to the ordinary least square regression model at different levels. Only career (B?=?0.217), social (B?=?0.212), learning (B?=?0.280), and enhancement functions (B?=?0.230) of volunteering have statistically significant influence on Saudi university male students’ volunteering intention. Findings highlight a need for a focus on instrumental needs of volunteers by government and NGOs. In regards to future research, gender and educational impacts on volunteers’ motive should be explored.     

Generalized exchange and propensity for military service: The moderating effect of prior military exposure

The propensity for military service (PMS) of young Americans is an important issue for our Armed Forces. Since the 1990s, the PMS of young Americans has steadily declined. Overtime, a declining PMS may cause military mission degradation, lowering of military recruitment standards, base closures, and reinstatement of the unpopular military draft system. This paper investigates the moderator effect of prior military service on the Generalized Exchange-PMS relationship. Generalized exchange is when indirect benefits such as preserving freedom and the American way of life accrue to the larger society because of an individual's military service. This paper uses a structural equation modelling approach to analyse the moderating effect of prior military exposure on prospective recruits regarding their PMS. Findings indicate that the group of prospective recruits with prior military exposure had higher levels of PMS than the group without such exposure, that is, the young people with prior military exposure are more likely to enlist in the military than the young Americans with no prior military exposure.     

Making robust the cross-validatory choice of smoothing parameter in spline smoothing regression

Cross-validation as a means of choosing the smoothing parameter in spline regression has achieved a wide popularity. Its appeal comprises of an automatic method based on an attractive criterion and along with many other methods it has been shown to minimize predictive mean square error asymptotically. However, in practice there may be a substantial proportion of applications where a cross-validation style choice may lead to drastic undersmoothing often as far as interpolation. Furthermore, because the criterion is so appealing the user may be misled by an inappropriate, automatically-chosen value. In this paper we investigate the nature of cross-validatory methods in spline smoothing regression and suggest variants which provide small sample protection against undersmoothing.     

Confirmatory Factor Analysis of the End‐User Computing Satisfaction Instrument: Replication within an ERP Domain*

Over the past decade, organizations have made significant investments in enterprise resource planning (ERP) systems. The realization of benefits from these investments depends on supporting effective use of information technology (IT) and satisfying IT users. User satisfaction with information systems is one of the most important determinants of the success of those systems. Drawing upon a sample of 407 end users of ERP systems and working within the framework of confirmatory factor analysis (CFA), this study examines the structure and dimensionality, and reliability and validity of the end‐user computing satisfaction (EUCS) instrument posited by Doll and Torkzadeh (1988) . In response to Klenke's (1992) motion to cross‐validate management information system (MIS) instruments and to retest the end user computing satisfaction instrument using new data, this study's results, consistent with previous findings, confirm that the EUCS instrument maintains its psychometric stability when applied to users of enterprise resource planning application software. Implications of these results for practice and research are provided.     

Intervention of gender friendly land preparation technologies for drudgery reduction of hill farm women

Inventory of all agricultural tasks depicted land preparation by women farmers as one of the most drudgery prone task with high energy cost, thereby, making it amenable to ergonomic interventions in terms of improved technologies (clod breaker, improved plough/'danella') to relieve women from high energy demands, time spent and associated drudgery. The study was conducted in two hill states of India viz. Himachal Pradesh (35 villages and 900 representative samples) and Uttrakhand (10 villages and 900 representative samples). Experimental data were conducted on representative sub sample of 60 hill farm women of both the states to assess physiological workload and musculo-skeletal problems both while working with traditional tools along with improved tools by employing selected parameters viz. physical fitness level, physiological parameters etc. The results showed that heart rate values were more than acceptable limits for task performed with the traditional tools as compared with improved tools. Significant reduction in the heart rate was observed while working with improved tools. Analysis of MSDs showed that the postural stress and severity of pain in various body parts was reduced by adopting new technology. Hence, the use of improved land preparation tools is recommended over the existing ones for drudgery reduction.