Dissecting Public Sector Corruption in Bangladesh: Issues and Problems of Control

The public sector in Bangladesh is ridden with corruption of various dimensions and shades. Apart from bribery, rent-seeking and misappropriation of funds, the performance of public organizations is adversely affected by a host of other factors like excessive lobbying, delays in service provision, pilferage and larceny, irresponsible conduct of officials, bureaucratic intemperance, patronage and clientelism. The several institutional mechanisms to combat administrative malfeasance are rendered ineffective by a non-committed political leadership, a blase"d bureaucracy, weak accountability structures, and unproductive legislative labors. The public body for controlling corruption is itself associated with all sorts of malpractices and conducts its affair most unprofessionally. Despite several attempts, the constitutionally authorized ombudsman is yet to find its place in the governance framework.     

On selecting from k finite populations the population with the largest α -quantile

Several procedures for ranking populations according to the quantile of a given order have been discussed in the literature. These procedures deal with continuous distributions. This paper deals with the problem of selecting a population with the largest α-quantile from k ≥ 2 finite populatins, where the size of each population is known. A selection rule is given based on the sample quantiles, where he samples are drawn without replacement. A formula for the minimum probability of a correct selection for the given rule, for a certain configuration of the population α-quantiles, is given in terms of the sample numbers.     

Stopping for efficacy in single-arm phase II clinical trials

Phase II clinical trials investigate whether a new drug or treatment has sufficient evidence of effectiveness against the disease under study. Two-stage designs are popular for phase II since they can stop in the first stage if the drug is ineffective. Investigators often face difficulties in determining the target response rates, and adaptive designs can help to set the target response rate tested in the second stage based on the number of responses observed in the first stage. Popular adaptive designs consider two alternate response rates, and they generally minimise the expected sample size at the maximum uninterested response rate. Moreover, these designs consider only futility as the reason for early stopping and have high expected sample sizes if the provided drug is effective. Motivated by this problem, we propose an adaptive design that enables us to terminate the single-arm trial at the first stage for efficacy and conclude which alternate response rate to choose. Comparing the proposed design with a popular adaptive design from literature reveals that the expected sample size decreases notably if any of the two target response rates are correct. In contrast, the expected sample size remains almost the same under the null hypothesis.     

用于改良杂交水稻品种的抗虫性转基因保持系(IR68899B)

杂种优势的利用使得水稻产量较半矮杆常规稻增加了 1 5%以上 ,为了保持产量的稳定 ,杂交稻品种还应具备对病虫的可遗传抗性 ,比如对茎杆钻心虫的抗性。而来自于苏云金杆菌并经人工剪裁合成的CryIA(b)基因便是有效地抗茎杆钻心虫基因之一。实践证明 ,基因转化是一项导入细菌基因于水稻基因组的行之有效的技术。笔者已利用获得转基因保持系这一途径来选育抗虫的杂交稻。利用基因枪方法 ,将CryIA(b)基因以及驱动该基因的 3 5S启动子成功地转入了IRRI的骨干保持系IR68899B。该基因的整合和表达已由Southern和Western杂交所证明。目前已分析到转基因植株的第二世代 (T2 )。鉴定表明 ,Bt 转基因植株中黄色茎杆钻心虫的抗性明显提高。本文首次报导转基因保持系的获得 ,以用于杂交稻品种的选育     

Combating Corruption and Managing Integrity in Malaysia: A Critical Overview of Recent Strategies and Initiatives

The Government of Malaysia has made continuous efforts and put in place an elaborate set of strategies and institutions aimed at combating corruption and promoting integrity in the society. The nation’s anti-corruption drive has lately received a major boost. The Badawi government that came to power in 2003 following 22 years of the Mahathir era declared containing corruption as its main priority which was followed by a series of concrete measures. However, the governmental attempts and strategies in Malaysia appear to have met with little success, as evidenced by the current data that suggests entrenched corruption in the society. Evidence shows that despite governmental campaigns and initiatives, corruption has remained acute, widespread and, in fact, worsened in recent years. This paper presents a critical overview of the anti-corruption strategies being followed in Malaysia and explores the problems and limitations of the current approach to fighting corruption and managing integrity in the society.     

Software reliability assessment using accelerated testing methods

The use of operational profiles and usage-based testing has received considerable attention recently in the software engineering literature. Testing under the actual operational profile can, however, be expensive, time consuming or even infeasible in situations where the performance of a system is dominated by infrequent but highly critical events. We consider a real application that deals with telecommunications network restoration after network failure caused by cuts in fibre optic cables. We use this application to demonstrate the usefulness of traditional accelerated testing methods to test and estimate software reliability. These methods, which have been extensively used in hardware reliability, have an important role to play in software reliability assessment as well.     

Between Darius and Khomeini: exploring Iran's national identity problematique

Iran, since the advent of its nation-state building process, has struggled to define its national identity in a relevant and resonant way. This article, while acknowledging the multi-dimensional nature of Iran's national identity, focuses on its two most profound components: Nationalism and Islamism. It explores how the tensions between these two are at the heart of not only the problem of Iranian identity but also of Persian identity. Examining how these two bases of identity also rely on similarity as well as difference the article argues, through the use of the tool of a problematique, that a coherent Iranian national identity, inclusive of all including ethnic minorities, is not possible until the tensions between Nationalism and Islamism at the heart of Persian identity are resolved.     

Maximum likelihood estimation of the parameters of a multiple step-stress model from the Birnbaum-Saunders distribution under time-constraint: A comparative study

The cumulative exposure model (CEM) is a commonly used statistical model utilized to analyze data from a step-stress accelerated life testing which is a special class of accelerated life testing (ALT). In practice, researchers conduct ALT to: (1) determine the effects of extreme levels of stress factors (e.g., temperature) on the life distribution, and (2) to gain information on the parameters of the life distribution more rapidly than under normal operating (or environmental) conditions. In literature, researchers assume that the CEM is from well-known distributions, such as the Weibull family. This study, on the other hand, considers a p-step-stress model with q stress factors from the two-parameter Birnbaum-Saunders distribution when there is a time constraint on the duration of the experiment. In this comparison paper, we consider different frameworks to numerically compute the point estimation for the unknown parameters of the CEM using the maximum likelihood theory. Each framework implements at least one optimization method; therefore, numerical examples and extensive Monte Carlo simulations are considered to compare and numerically examine the performance of the considered estimation frameworks.     

Test for the equality of interclass correlation cofefficients under unequal family sizes for several populations

Large sample ANOVA test and likelihood ratio test have been Proposed to test for the equaiity of sevcrai iniraciass correlation coefiicients unier unequai family sizes based on several independent multinormal samples, it has been found on the basis of simulation study that the likelihood ratio test consistenily and reliably produced results superior to those of the large sample ANOVA test in terms of power for various combinations of intraclass correlatxon coefficient values.