The first algorithm for linear programming: An analysis of Kantorovich's method

An analysis is given of Kantorovich's method of resolving multipliers. It is shown that the method is equivalent to a parametric method but that it is also equivalent with the simplex method with a special rule for the choice of the new basic variable.     

PENDULUM--a guideline-based approach to the interpretation of STR mixtures

Several years ago, a theory to interpret mixed DNA profiles was proposed that included a consideration of peak area using the method of least squares. This method of mixture interpretation has not been widely adopted because of the complexity of the associated calculations. Most reporting officers (RO) employ an experience and judgement based approach to the interpretation of mixed DNA profiles. Here we present an approach that has formalised the thinking behind this experience and judgement. This has been written into a computer program package called PENDULUM. The program uses a least squares method to estimate the pre-amplification mixture proportion for two potential contributors. It then calculates the heterozygous balance for all of the potential sets of genotypes. A list of "possible" genotypes is generated using a set of heuristic rules. External to the programme the candidate genotypes may then be used to formulate likelihood ratios (LR) that are based on alternative casework propositions. The system does not represent a black box approach; rather it has been integrated into the method currently used by the reporting officers at the Forensic Science Service (FSS). The time saved in automating routine calculations associated with mixtures analysis is significant. In addition, the computer program assists in unifying reporting processes, thereby improving the consistency of reporting.     

Medicaid reform: programming solutions to the equity problem

This paper demonstrates the application of a mathematical programming model to a longstanding policy issue in the Medicaid reform debate: the redistribution of program funds necessary to achieve equity in eligibility and benefit coverage across states. The model is used to estimate the potential degree of equity achievable in the current Medicaid system given various budgetary and political constraints. Two model simulations, based on a 1979 data set for aged recipients of Supplementary Security Income, are presented. The results indicate that half or more of the interstate differences in spending for this population group are due to actuarial and efficiency factors rather than deviations from equity potential. The implications of eliminating the remaining differences are discussed.     

股东派生诉讼的程序设计对公司治理结构的影响

股东派生诉讼制度的产生溯源于通过公司的最终所有者(股东)对其代理人(主要是董事)的有效监督来完善公司治理结构的初衷.本文主要对美国的判例法、成文法和美国法律协会的建议在股东派生诉讼程序设计方面的做法和规定及其对公司治理结构的影响进行介绍和评析,以期得出对中国立法有借鉴意义的结论.     

On the selection of capital juries

Death qualification may bias capital juries not only because it alters the composition of the group “qualified” to sit, but also because it exposes them to an unusual and suggestive legal process. This study examined some of the effects of that process. Subjects were randomly assigned to one of two conditions in which they were exposed to standard criminalvoir dire that either included death qualification or did not. Subjects who were exposed to death qualification were significantly more conviction prone, more likely to believe that other trial participants thought the defendant was guilty, were more likely to sentence him to death, and believed that the law disapproves of death penalty opposition. Several psychological features of the death-qualification process are suggested to account for the biasing effects.     

司法官遴选制度探微

现代法治国家一般都建立起了严格的司法官遴选制度 ,大体可分为三种模式。这三种模式各有其特色 ,我国司法官遴选制度存在着一定的问题 ,应予以改革。     

Forensic interpretation of Y-chromosomal DNA mixtures

The mathematical concept previously introduced for the forensic interpretation of DNA mixtures using non-associated genetic markers has been adapted to the assessment of haplotypes. Such calculus is required, for example, when Y-chromosomal markers are used in forensics. In addition to outlining the general mathematical framework, we devise two approaches to its practical computational implementation, involving either the inclusion-exclusion principle of probability theory or a recursion in the number of unknown contributors invoked. The two approaches scale differently, depending upon the complexity of the case and the diversity of the markers used. The performance of Y-chromosomal microsatellites (Y-STRs) as a means of trace donor discrimination has been assessed by simulation, using the derived formulas. Based upon data from the Y-chromosomal Haplotype Reference Database (YHRD), the exclusion chance of a non-contributor is shown to vary between 95% in the case of two contributors, and 70% for five contributors. With only one additional contributor, half of all contributing suspects would yield a log-likelihood ratio in favour of donorship of 1.61 or higher, although the median drops to 0.66 with four additional contributors. It must be emphasised that these estimates of the discriminatory power of Y-STRs are likely to be conservative since the simulations involved only haplotypes known to occur in YHRD.     

The current state of gender-specific delinquency programming

Few attempts to identify “what works” in the crime prevention and offender rehabilitation research specifically address gender. The 1992 reauthorization of the Juvenile Justice and Delinquency Prevention Act, however, called for new research that would improve the processing and treatment of delinquent girls. This article reviews the relevant theoretical and empirical research that both informed the new legislation and took place in response to it. This is followed by an empirical study conducted to: (1) identify gender-specific programs (GSPs), (2) determine the extent to which GSPs utilize applicable research in their design and implementation, and (3) assess the evidence of GSPs' impact on targeted outcomes. The findings from the current study suggested that, in addition to strengthening program evaluation methodology, gender-specific programs for girls need to more meaningfully incorporate relevant theories and gender-specific risk and protective factors into their curriculum.     

Empirical analysis of the STR profiles resulting from conceptual mixtures

Samples containing DNA from two or more individuals can be difficult to interpret. Even ascertaining the number of contributors can be challenging and associated uncertainties can have dramatic effects on the interpretation of testing results. Using an FBI genotypes dataset, containing complete genotype information from the 13 Combined DNA Index System (CODIS) loci for 959 individuals, all possible mixtures of three individuals were exhaustively and empirically computed. Allele sharing between pairs of individuals in the original dataset, a randomized dataset and datasets of generated cousins and siblings was evaluated as were the number of loci that were necessary to reliably deduce the number of contributors present in simulated mixtures of four or less contributors. The relatively small number of alleles detectable at most CODIS loci and the fact that some alleles are likely to be shared between individuals within a population can make the maximum number of different alleles observed at any tested loci an unreliable indicator of the maximum number of contributors to a mixed DNA sample. This analysis does not use other data available from the electropherograms (such as peak height or peak area) to estimate the number of contributors to each mixture. As a result, the study represents a worst case analysis of mixture characterization. Within this dataset, approximately 3% of three-person mixtures would be mischaracterized as two-person mixtures and more than 70% of four-person mixtures would be mischaracterized as two- or three-person mixtures using only the maximum number of alleles observed at any tested locus.     

The devil lies in the definition: competing approaches to fossil fuel subsidies at the IMF and the OECD

Fossil fuel subsidy reform has in recent years been addressed by international economic organizations including the International Monetary Fund (IMF) and the Organisation for Economic Co-operation and Development (OECD). The two organizations have differed significantly in how they define fossil fuel subsidies. The IMF’s definition constitutes a radical break with previous definitions by including environmental externalities, while the OECD’s is more conventional. The article explores the factors that explain why these international economic organizations have approached fossil fuel subsidies so differently. The exact definition of fossil fuel subsidies is contested. Furthermore, fossil fuels subsidies can be framed in ways that emphasize, respectively, their macroeconomic, fiscal, environmental, and distributive consequences. The article finds that institutional interaction lifted OECD involvement in fossil fuel subsidies to a new level, whereas the impetus to address fossil fuel subsidies within the IMF came largely from the IMF staff. In both cases, the organization’s bureaucracy constituted the most important factor shaping how the organizations addressed such subsidies and hence the main reason why they differ in how they approach fossil fuel subsidies.