The Effect of Temperature and Exposure Time on Stability of Cholesterol and Squalene in Latent Fingermarks Deposited on PVDF Membrane

Cholesterol and squalene are fatty materials of latent fingermarks that can be utilized for dating methodologies and visualization techniques. Previous studies have suggested these compounds undergo degradation in fingermarks as a function of time (days) and light at ambient temperature. However, studies assessing how their composition changes at low and high temperatures over short periods of time (hours) have not been published previously. Here, we performed quantitative analysis of cholesterol and squalene in natural fingermark residue using PVDF membrane, after exposure to a range of temperatures (−20 to 100°C) for 4 and 8 h. We found that levels of both fatty materials remained constant at −20 to 60°C, but both showed significant reduction at 100°C, over short exposure times. These results indicate that cholesterol and squalene are detectable at −20 to 60°C, whereas at 100°C or higher, both are lost due to rapid thermal degradation.     

Combined Collection and Analysis of Inorganic and Organic Gunshot Residues

Gunshot residue (GSR) analysis and their interpretation provide crucial information on a criminal investigation involving the use of firearms. To date, several approaches have been proposed for the implementation of a combined sampling and analysis of inorganic (IGSR) and organic GSR (OGSR). However, it is not clear at this stage if concurrent analyses of both types of residue might be detrimental to the analysis of IGSR currently applied in forensic laboratories. Thus, this work aims to compare and evaluate three different protocols for the combined collection and analysis of IGSR and OGSR. These methods, respectively, involve the use of a modified stub (with two halves, one for the detection of IGSR and the other for the analysis of OGSR); the sequential recovery of GSR with two stubs mounted with different adhesives (double-sided carbon tape and Tesa® TACK) and the sequential analysis of IGSR and OGSR from a single carbon stub following carbon deposition. The detection of IGSR was carried out using SEM-EDX, while OGSR analysis was performed using ultra-high-performance liquid chromatography–tandem mass spectrometry (UHPLC-MS/MS). Obtained results for experiments performed using Geco Sinoxid^® ammunition indicated that sequential analysis was the most suitable protocol for the combined collection and analysis of both IGSR and OGSR. A higher number of inorganic (characteristic and consistent) particles and higher concentrations of ethylcentralite, N-nitrosodiphenylamine, diphenylamine, and nitroglycerin were recovered with this method.     

The Effects of Blaming Others for Legislative Inaction on Individual and Collective Evaluations

Legislators commonly blame others for gridlock. We posit that legislators may engage in this type of rhetoric to minimize the individual reputational risks associated with legislative inaction or to boost the relative standing of their party. In a series of six survey experiments, we find that blaming others for inaction undermines voters’ evaluations of individual legislators who engage in this rhetorical strategy. This effect is particularly pronounced among out-partisans and independents. However, blaming rhetoric can also enhance the standing of the blamer’s party relative to the opposing party across all groups (including out-partisans), in large part by undermining the reputations of these other actors. Ultimately, we show that when an individual legislator engages in blaming rhetoric, the immediate net electoral effects are null. This suggests that coordinated efforts by a party to blame opponents may improve the party’s relative standing, while imposing few costs on those engaged in blaming.     

Voter perceptions of parties’ left–right positions: The role of party strategies

Left–right semantics help voters simplify the complex political reality as they reduce party views on a variety of issues to a single dimension. Less studied, however, is the question of how voters arrive at parties’ left–right positions and how parties can influence voter perceptions. In this article, I demonstrate that the party can shape the voter’s understanding of the content of its left–right ideology by using three strategies: avoidance, ambivalence, or ambiguity. Specifically, the party may avoid or de-emphasize, embrace a conflicting position, or becloud its position on the controversial issue; by so doing, it induces voters to place less weight on this issue when perceiving the party’s left–right position. The empirical analysis connects voter and party data from 21 European democracies in the period 1996–2014 and finds empirical support for the effectiveness of these strategies. In particular, the study finds robust empirical evidence that strategic avoidance, ambivalence, and ambiguity strongly moderate the association between the party’s perceived ideological brand and its underlying issue content.     

Applying Stone in a Western Landscape: Ranchers,Conservationists, and Causal Stories in the “American Serengeti”

As the emergence of nongovernmental conservation efforts generates conflict among various stakeholders, the causal story that each party articulates regarding conservation and the causes of land degradation reflects their unique interests. This study uses existing literature to evaluate causal stories surrounding a contemporary conservation effort: Montana's American Prairie Reserve. Through qualitative review of web‐based documents and newspaper articles, it generates a preliminary account of key stakeholders' causal stories. The case study suggests that parties who might be disadvantaged by ascribing responsibility for environmental harms in an adversarial fashion may instead elect to articulate causal stories that are more neutral than existing approaches might forecast. The study concludes by suggesting that further development of causal story literature may enable it to better address contemporary conservation efforts.     

Feeding Mothers’ Love: Stories of Breastfeeding and Mothering in Urban China

ABSTRACT

By analysing narratives of infant feeding, this article explores how emotions are involved in the making of maternal subjectivity. The article is based on interviews with 21 Chinese middle-class mothers of small infants living in Beijing and their stories of how breastfeeding connects to intimacy and love. By merging post-structural approaches of subjectivity with affect theory, the article shows how the emotional dimension of breastfeeding promotes an ideal of mothers as primary caregivers. It finds that this ideal is challenged by practices of multiple caregiving in the mothers’ everyday lives. By exploring the performativity of emotions, the article adds another sociological perspective beyond those concerned with medical discourses of feeding infants. Also, as emotions have been neglected in much social research on Chinese mothering, it contributes to new sociological knowledge about mothering in China.     

Hurdles to peace: a level-of-analysis approach to resolving Sudan’s civil wars

Why do some peace agreements end armed conflicts whereas others do not? Previous studies have primarily focused on the relation between warring parties and the provisions included in peace agreements. Prominent mediators, however, have emphasised the importance of stakeholders at various levels for the outcome of peace agreements. To match the experience of these negotiators we apply a level-of-analysis approach to examine the contextual circumstances under which peace agreements are concluded. While prominent within the causes of war literature, level-of-analysis approaches are surprisingly scant in research about conflict resolution. This article compares two Sudanese Peace Agreements: the Comprehensive Peace Agreement (2005) that ended the North–South war and led to the independence of South Sudan, and the Darfur Peace Agreement (2006) which failed to end fighting in Darfur. We find that factors at the local, national and international level explain the different outcomes of the two agreements. Hence, the two case studies illustrate the merit of employing a level-of-analysis approach to study the outcome of peace agreements. The main contribution of this article is that it presents a new theoretical framework to understand why some peace agreements terminate armed conflict whereas others do not.     

The elephant in the room: offshore companies,liberalisation and extension of presidential power in DR Congo

In the Democratic Republic of Congo, donors promoted rapid liberalisation and presidential elections in the aftermath of the war, and after two terms, President Kabila has not left office. This article engages with the question of how liberalisation and elections are connected, and how they are related to the extension of presidential power. It finds that the international market for minerals has shaped the domestic political economy but its nature has effectively been ignored in the formulation of donor policy; efforts at regulating trade have been concentrated on due diligence of origin in Congo but have not addressed the secrecy of international trade. Liberalisation has removed control of economic resources from Congo, provided returns for elite politicians and funded violence to control the disenfranchised population. The offshore companies are the elephant in the room; without acknowledging them, analysis of the liberalisation and its interaction with presidential tenure lacks assessment of the opportunities, interests and power that shaped the processes.     

从冲突走向合作:政府与民众的利益关系解析——以浙江省青田县滩坑移民为例

政府与民众的关系是政治领域的永恒主题。多少王朝的兴替,多少政权的更迭,都与此相关,都由此决定。本文试从利益的视角,民众的心态与诉求,政府的行事与作为,解析市场经济条件下政府与民众的关系,如何从冲突走向合作。     

The Culture of Interest: A Proposed Addition and Revision of the Three‐Culture Model

Negotiation and conflict resolution theorists have classified world cultures according to three types for the purpose of describing and predicting some of the ways in which individuals and groups within broad, geographically based cultural groups behave in conflict and negotiation‐related situations. These three broad categories, called “cultural syndromes,” have described these cultures according to the relative value they place on these three concerns: honor, face, and dignity. Based on our examination of the literature on the cultural dimensions of negotiation and conflict management, our own practice, and an analysis of literature and practice pertaining to the place and utility of the honor, face, interest, and dignity attributes within and between cultural groups , we propose a reformulation of this typology. Our reformulation would replace the broad “dignity” category with a new category that we call “interest,” which we believe better characterizes Northern European and North American cultures. We also argue that a cultural orientation toward dignity is universal and not geographically unique and is thus shared by all three cultures. This new formulation, we believe, more accurately characterizes the global range of orientations toward negotiation and conflict resolution and would, if adopted, help scholars and practitioners better understand culturally divergent conflict orientations and behaviors as well as the ramifications of such differences for negotiation and conflict resolution practice.