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21.
Kristin Komives Jon Halpern Vivien Foster Quentin Wodon Roohi Abdullah 《Development policy review : the journal of the Overseas Development Institute》2007,25(6):659-679
Subsidies to residential utility customers are important in‐kind transfer mechanisms in developing countries. Do these subsidies reach the poor? This article finds the average targeting performance of water and electricity subsidies to be similar to that of other social‐transfer mechanisms using the same targeting method. The most common form — a quantity‐based consumption subsidy aiming to subsidise low‐volume customers — is highly regressive. Many geographically‐targeted and most means‐tested utility subsidies are progressive, but still exclude many poor households. Connection subsidies are an attractive alternative in low coverage areas, but they will only reach the poor if utilities extend network access to poor households and if households choose to connect. 相似文献
22.
Lazim Abdullah 《Social indicators research》2011,104(1):117-127
Defining the poverty line has been acknowledged as being highly variable by the majority of published literature. Despite
long discussions and successes, poverty line has a number of problems due to its arbitrary nature. This paper proposes three
measurements of poverty lines using membership functions based on fuzzy set theory. The three membership functions, namely
exponential, trapezoidal and quadratic sigmoid together with their calculation steps are discussed. Average monthly household
incomes of Malaysians are used to illustrate the proposed poverty line. Three new sets of poverty lines were derived for 3 years
as numerical application to the proposed membership functions. The numerical results show the flexibility of poverty lines
resulted from the composition of the proposed functions. It suggests that the official poverty line for Malaysians is too
low thus creating an underestimation of the extent of poverty in Malaysia. 相似文献
23.
This paper is derived from an interest in the development of automated approaches to tackle examination timetabling problems effectively. We propose a hybrid approach that incorporates effective heuristic operators within the great deluge algorithm. The latter was chosen because of consistently good performances being reported within the examination timetabling research domain. The additional heuristic procedures further enhance the overall effectiveness of this integrated hybrid approach. These procedures are drawn from methodologies that have appeared in the literature under term the “electromagnetic-like mechanism”. The aim is to move sample points towards a high quality solution while avoiding local optima by utilising a calculated force value. This value, which is calculated dynamically, is treated as a decay rate in determining the level within the great deluge algorithm. To evaluate the proposed algorithm, we carry out experimental work on two types of examination timetabling datasets. All the related results and analysis obtained illustrate that this hybrid approach is effective when compared with existing approaches in the literature. 相似文献
24.
Ahmed A. Soliman Ahmed H. Abd Ellah Naser A. Abou-Elheggag Abdullah A. Modhesh 《Journal of Statistical Computation and Simulation》2013,83(12):2270-2290
In this paper, a new life test plan called a progressively first-failure-censoring scheme introduced by Wu and Ku? [On estimation based on progressive first-failure-censored sampling, Comput. Statist. Data Anal. 53(10) (2009), pp. 3659–3670] is considered. Based on this type of censoring, the maximum likelihood (ML) and Bayes estimates for some survival time parameters namely reliability and hazard functions, as well as the parameters of the Burr-XII distribution are obtained. The Bayes estimators relative to both the symmetric and asymmetric loss functions are discussed. We use the conjugate prior for the one-shape parameter and discrete prior for the other parameter. Exact and approximate confidence intervals with the exact confidence region for the two-shape parameters are derived. A numerical example using the real data set is provided to illustrate the proposed estimation methods developed here. The ML and the different Bayes estimates are compared via a Monte Carlo simulation study. 相似文献
25.
Abdullah Almasri 《统计学通讯:模拟与计算》2013,42(3):598-611
In this study, we use the wavelet analysis to construct a test statistic to test for the existence of a trend in the series. We also propose a new approach for testing the presence of trend based on the periodogram of the data. Since we are also interested in the presence of a long-memory process among the data, we study the properties of our test statistics under different degrees of dependency. We compare the results when using the band periodogram test and the wavelet test with results obtained by applying the ordinary least squares (OLS) method under the same conditions. 相似文献
26.
外语能力磨蚀的性别差异初探 总被引:1,自引:0,他引:1
对300余名大学生进行了英语阅读和听力测试,并从中随机抽取男女生各50名进行了写作测试,得出如下结论:(1)外语磨蚀程度存在明显的性别差异;(2)男女生在深度阅读、短对话听力以及段落听力方面的磨蚀差异不显著;(3)女生在快速阅读能力方面的磨蚀程度明显超过男生;(4)女生写作能力在切题性、连贯性以及清楚性方面的磨蚀程度显著大于男生,而在语言的正确性方面的磨蚀没有明显超过男生. 相似文献
27.
Mirza Abdullah Suhaiza Zailani Mohammad Iranmanesh K. Jayaraman 《Review of Managerial Science》2016,10(4):683-709
This study investigated the internal and external barriers to green innovation initiatives among Malaysian manufacturers. Data was gathered through a survey of 153 manufacturing companies in Malaysia. Data was analyzed using the partial least squares technique. Results indicated that the barriers to green products, processes, and systems innovations are different. Issues of environmental resources, attitude and perception, business practices, government support, and customer demand were found to be the barriers to green product innovations, whereas attitude and perception, business practices, poor external partnerships, insufficient information, lack of customer demand, and environmental commercial benefits were determined to be the factors that negatively affect green process innovations. As regards green system innovation, environmental resources, attitude and perception, business practices, technical barriers, government support, and environmental and commercial benefits presented themselves as the internal and external barriers that need to be addressed. The results have important implications for managers of manufacturers that have plans of promoting green products, processes, and system innovations. 相似文献
28.
An illustration of the causality relation between government spending and revenue using wavelet analysis on Finnish data 总被引:1,自引:0,他引:1
Quarterly data for the period 1960:1 to 1997:2, conventional tests, a bootstrap simulation approach and a multivariate Rao's F-test have been used to investigate if the causality between government spending and revenue in Finland was changed at the beginning of 1990 due to future plans to create the European Monetary Union (EMU). The results indicate that during the period before 1990, the government revenue Granger-caused spending, while the opposite happened after 1990, which agrees better with Barro's tax smoothing hypothesis. However, when using monthly data instead of quarterly data for almost the same sample period, totally different results have been noted. The general conclusion is that the relationship between spending and revenue in Finland is still not completely understood. The ambiguity of these results may well be due to the fact that there are several time scales involved in the relationship, and that the conventional analyses may be inadequate to separate out the time scale structured relationships between these variables. Therefore, to investigate empirically the relation between these variables we attempt to use the wavelets analysis that enables us to separate out different time scales of variation in the data. We find that time scale decomposition is important for analysing these economic variables. 相似文献
29.
30.
The aim of this study is to explore how the status and standards of public relations as a profession are perceived by the three main groups involved in public relations: academics, practitioners, and business leaders. It is concluded that public relations can be a ‘true’ profession if all parties involved are united and committed to developing standardised, universal forms of public relations practise. 相似文献