Comparison of glass fragments using particle-induced X-ray emission (PIXE) spectrometry

A procedure has been developed to analyze the trace element concentrations in glass fragments using particle-induced X-ray emission (PIXE) spectrometry. This method involves using accelerated protons to excite inner-shell electronic transitions of target atoms and recording the resultant X-rays to characterize the trace element concentrations. The protocol was able to identify those glass fragments that originated from different sources based on their elemental analyses. The protocol includes specific approaches to calculating uncertainties and handling measurements below the level of detection. The results indicate that this approach has increased sensitivity for several elements with higher atomic number compared with X-ray fluorescence methods. While not as sensitive as laser-ablation or inductively coupled plasma mass spectrometry methods of dissolved samples, it is entirely nondestructive and entails a much simpler sample preparation process that may be used to presort glass fragments for more comprehensive elemental analysis. As such, the technique described may have a niche role in forensic glass analysis.     

当代中国女性就业权利的现状分析及救济机制的完善

目前我国关于女性就业方面的法律规范保障不够全面,加上现实中职场中的不公正的潜规则的影响,致使损害女性这一社会弱势群体的合法权益的现象时有发生。本文在对我国目前女性就业权利的现状进行考察和分析的基础上,提出相应的保护和救济机制的完善建议。     

刑满释放人员就业歧视问题探究

刑满释放人员因受就业歧视、失业而再犯的问题越来越多,理应受到我们的关注。对刑满释放人员的就业歧视的原因在哪,是否具有合理性？文章从反就业歧视一般原理及刑罚理论论证其不合理性,并分析刑满释放人员就业权平等保护的意义。最后提出应从营造平等保护制度环境、强化歧视法律责任和实施积极行动等方面来保障刑满释放人员的平等就业权。     

Ideological Neutrality in the Workplace

This note assesses the decisions of the Court of Justice of the European Union in Achbita v G4S Secure Solutions NV and Bougnaoui v Micropole SA, the first cases dealing with religious discrimination under the Equal Treatment Directive 2000/43. Both cases concerned Muslim women wishing to express their religious beliefs by wearing an Islamic headscarf while working in a private undertaking. The Court held that the employees’ dismissal could not be justified by reference to clients’ prejudices against the headscarf. However, dismissal could be justified if pursued on the basis of a corporate policy of ideological neutrality which prohibited all visible religious, political and philosophical symbols. This note criticises the latter part of the Court's decision for, inter alia, placing too much weight on an employer's freedom to run its business in spite of the grave effects this has on employees’ fundamental right to manifest their beliefs at work.     

Discrimination of Geographical Origin of Asian Garlic Using Isotopic and Chemical Datasets under Stepwise Principal Component Analysis

Isotopic compositions of δ²H, δ¹⁸O, δ¹³C, and δ¹⁵N and concentrations of 22 trace elements from garlic samples were analyzed and processed with stepwise principal component analysis (PCA) to discriminate garlic's country of origin among Asian regions including South Korea, Vietnam, Taiwan, and China. Results indicate that there is no single trace‐element concentration or isotopic composition that can accomplish the study's purpose and the stepwise PCA approach proposed does allow for discrimination between countries on a regional basis. Sequentially, Step‐1 PCA distinguishes garlic's country of origin among Taiwanese, South Korean, and Vietnamese samples; Step‐2 PCA discriminates Chinese garlic from South Korean garlic; and Step‐3 and Step‐4 PCA, Chinese garlic from Vietnamese garlic. In model tests, countries of origin of all audit samples were correctly discriminated by stepwise PCA. Consequently, this study demonstrates that stepwise PCA as applied is a simple and effective approach to discriminating country of origin among Asian garlics.     

同色电工胶带的光谱成像技术检验

目的研究同种颜色电工胶带的区分方法。方法应用光谱成像技术对同色（选取红、黄、蓝、绿4种颜色）不同品牌的电工胶带进行区分。结果蓝色电工胶带的区分率最高,达到99.0%,红色、绿色、黄色样品的区分率相差不大,分别为94.3%、93.8%及93.3%。结论光谱成像技术可以实现同种颜色电工胶带的快速区分,从色度学角度为法庭科学领域电工胶带物证的区分提供了一种新的方法。     

Rental Market Discrimination Against Same-Sex Couples: Evidence From a Pairwise-Matched Email Correspondence Test

ABSTRACT

I present the results of a randomized matched-pair email correspondence test of 6,490 unique property owners in 94 U.S. cities to provide a nationally representative estimate of the level of discrimination that same-sex couples experience when inquiring about rental housing. I find that same-sex male couples, especially non-White same-sex male couples, are less likely to receive a response to inquiries about rental units. I also find that same-sex Black male couples are subject to more subtle forms of discrimination than heterosexual Black couples are. I then examine whether state and local antidiscrimination laws covary with rates of housing discrimination against same-sex couples. Although my results are not causal, I find that antidiscrimination laws have an ambiguous relationship with rates of discrimination faced by same-sex couples. State-level housing protections, for example, covary positively with response rates for same-sex Black male couples, whereas local-level laws covary negatively with response rates for these couples.     

Traditional institutions and the rural development challenges in Africa: Gender and agricultural transformation perspectives

Abstract

The tension between the conception of traditional leadership systems as mere cultural institutions and the lack of interest and/or ability to use them as practical development tools in Africa has prompted their critical reappraisal in this article. The article is based on the need for African countries to endeavour to achieve a dialectical mediation between traditional leadership institutions on the one hand and concrete rural development projects on the other, for the purpose of promoting sustainable development. It is argued that there is much that traditional institutions can do to influence activities in rural areas. Any lack of such involvement on the part of traditional leadership systems can only lead to little transformation in rural areas. The article discusses this position with reference to two rural activity systems related to gender-based issues and agricultural development. The article is structured in four parts. The first section is devoted to the introduction, the second and third sections examine the roles traditional leaders could play in the areas of gender and agricultural development, while the final section comprises the conclusion.     

Analysis and Discrimination of Single‐Layer White Architectural Paint Samples,

Comparative analyses of 50 single‐layer white architectural paints were conducted to determine the discrimination power using standard techniques and to provide a basis for assessing significance when paints with limited features are not discriminated. Utilizing Fourier transform infrared spectroscopy (FTIR), 68 undifferentiated pairs resulted, yielding a discrimination of 94.45%. Adding stereomicroscopy, scanning electron microscopy (SEM) with energy dispersive spectroscopy (EDS) and backscatter electron (BSE) imaging, and pyrolysis‐gas chromatography/mass spectrometry (Py‐GC/MS), the overall discrimination was 99.35%. The study included blind verification replicates, which resulted in the only pairs without indications of physical or chemical differences. The remaining groups of undifferentiated samples contained subtle differences by at least one technique, but were considered undifferentiated for the discrimination power evaluations. This study demonstrates a high degree of discrimination of single‐layer white architectural paints using methods of analysis often encountered in forensic science laboratories.