Voltammetric analysis of luminescent markers in gunshot residues

Currently, SEM-EDS is used to detect gunshot residue (GSR) from the presence of Ba, Pb, and Sb in the sample. However, the development of new nontoxic ammunition (NTA) has prevented conventional metals from being found. In this work, we aim to determine the presence of an inorganic luminescent chemical marker based on rare earth in gunshot residues using the technique of squarewave voltammetry (SWV). After firing, the luminescent complex [(Eu₂Zr)(btc)₃(Hbtc)_0.5.6H₂O], which is used as a chemical marker, can be detected under a UV lamp. An aqueous solution with 0.1 mol L⁻¹ KCl as supporting electrolyte can be easily collected on carbon paste electrode surfaces for SWV analysis A = 100 mV, f = 10 Hz, and step potential of 5 mV are required. The luminescent marker incorporated into the carbon paste electrode showed two anodic peak currents in the region of 0.4 V (vs Ag/AgCl) and at 0.75 V (vs Ag/AgCl) and also a cathodic one in 0.4 V (vs Ag/AgCl). SEM-EDS was able to analyze the same voltammetric results for conventional and nontoxic ammunition containing the luminescent marker. Therefore, voltammetry and SEM-EDS are valid for detecting the new residue marker in GSR. Despite this, the electrochemical method is still more advantageous because of its low cost and lack of expensive equipment and supplies in forensic laboratories.     

Security in the Interparental Subsystem (SIS) Scale: Psychometric Characteristics in a Sample of Portuguese Adolescents

The Security in the Interparental Subsystem Scale (SIS) is based on emotional security theory. This study examined the psychometric properties of an adaptation of the SIS to a sample of Portuguese adolescents (60.3 % girls; 10 to 18 years old; Mage?=?13 years; N?=?229), recruited in public schools. Discriminant and concurrent validity were assessed by analyzing SIS dimensions associations with adolescents’ exposure to interparental conflict (IC), and psychological adjustment, respectively. Exploratory and confirmatory factor analyses of the SIS supported a six-factor solution, with satisfactory internal consistency. Evidence for discriminant and concurrent validity was provided: most SIS dimensions significantly discriminated between adolescents exposed to higher vs. lower levels of IC; and a significant positive association between emotional reactivity and adolescents’ externalizing symptoms was found. These findings suggest that the SIS is a reliable tool for assessing adolescents’ emotional insecurity in the interparental relationship within the context of this sample.     

Feminist Research in Transitional Justice Studies: Navigating Silences and Disruptions in the Field

This paper will analyse what it takes to conduct feminist and sensitive research in countries that have seen mass human rights violations. Transitional justice research involves critical examination of difficult topics which raises a number of ethical and methodological issues for both the participants and the researchers. Although empirical research has been a facet of the studies produced in the field, researchers’ accounts of undertaking research in often politically sensitive environments is largely missing from published books and research reports. This paper is informed by personal experiences of doing research in wartime rape in the ethnically and politically divided country of Bosnia and Herzegovina. I argue that the researcher’s profile and positionality directly affects the fieldwork and that fieldwork is a dialogical process which is structured by the researcher and the wider political processes in the country.     

自由择业知识分子的发展状况与统战工作研究

改革开放后成长起来的自由择业知识分子群体是新的社会阶层人士中的重要组成部分,对自由择业知识分子的工作是统战工作的新领域和新课题.开展自由择业知识分子群体的统战工作,必须科学分析和把握他们的群体特征、内在需求和价值取向,准确看待他们在未来经济建设、政治建设、文化建设和社会建设中的功能、地位和作用,树立科学的工作理念,选择新的工作途径,构建有效的工作网络,形成长效的工作机制.     

The Impact of India’s Janani Suraksha Yojana Conditional Cash Transfer Programme: A Replication Study

In 2005 the government of India established Janani Suraksha Yojana (JSY), a conditional cash transfer programme to increase deliveries in health facilities. We re-examine an influential study published in 2010 on the effect of JSY on reproductive health coverage indicators and perinatal and neonatal mortality. We find the original authors’ results to be replicable and robust to various changes in model specifications and analysis. Through the use of multilevel models, we find meaningful heterogeneity across states and districts in the effects of JSY on the probabilities of in-facility delivery and skilled birth attendance, and neonatal mortality rates.     

Has Structural Economic Vulnerability Decreased in Least Developed Countries? Lessons Drawn from Retrospective Indices

The Economic Vulnerability Index (EVI) is a well-recognised measure of the structural vulnerability of developing countries and is regularly used and published by the United Nations for cross-country comparison purposes, primarily to review the list of Least Developed Countries (LDCs). However, due to the revisions in methodology occurring over time, the official EVI cannot be used to assess the changes in vulnerability. In this paper, we use two retrospective series of the EVI, based on constant definitions. The real change in vulnerability is thus isolated from the impact of revisions in the design of the index, allowing comparison of the evolution of LDCs and non-LDCs. The implications of the revisions in the EVI design are then discussed.     

Economic development strategies in the American states

Economic development has always been a moving target. Not surprisingly, there is growing evidence that the shape of economic policy and practice is significantly changing in many American states on the eve of the 21st Century. This article reviews the evolution and transformation of state economic development as well as its multidimentional character. The evolution includes roughly three broad, overlapping phases: a period when states focused on attracting businesses, a period when they focused on developing existing businesses, and a period when states refined and sharpened the strategies they already had in place. This article also offers evidence that a new, fourth phase is emerging in economic development. It is called cluster-based economic analysis and strategy development. This new approach has states addressing new issues, using new analytical tools, and experiencing new kinds of results.