An Accelerated Analytical Process for the Development of STR Profiles for Casework Samples

Significant efforts are being devoted to the development of methods enabling rapid generation of short tandem repeat (STR) profiles in order to reduce turnaround times for the delivery of human identification results from biological evidence. Some of the proposed solutions are still costly and low throughput. This study describes the optimization of an analytical process enabling the generation of complete STR profiles (single‐source or mixed profiles) for human identification in approximately 5 h. This accelerated process uses currently available reagents and standard laboratory equipment. It includes a 30‐min lysis step, a 27‐min DNA extraction using the Promega Maxwell^®16 System, DNA quantification in <1 h using the Qiagen Investigator^® Quantiplex HYres kit, fast amplification (<26 min) of the loci included in AmpF?STR^® Identifiler^®, and analysis of the profiles on the 3500‐series Genetic Analyzer. This combination of fast individual steps produces high‐quality profiling results and offers a cost‐effective alternative approach to rapid DNA analysis.     

The Homicide–Suicide Phenomenon: Findings of Psychological Autopsies

Homicide–suicide represents a single episode of violence which may decimate an entire family. This study aimed to further describe motives and context of these tragedies. Psychological autopsies were completed for 18 homicide–suicide cases in Dallas, Texas. This included postevent interviews with surviving family members and review of police and coroner records. Two‐thirds of perpetrators had made either verbal or written threats prior to the homicide–suicide. A simplified typology describing victim–perpetrator relationship and motive type is suggested for future studies and clinical ease. Two‐thirds of perpetrators fell into the category of Intimate‐Possessive, most of whom were depressed men who were abusing substances and undergoing separation. Additional categories included Intimate‐Ailing, Filial‐Revenge, Familial‐Psychotic, and Friend‐Psychotic. Further, implications from this psychological autopsy study regarding risk assessment include use of collateral interviews regarding threats and past violence.     

Why Do People Hang Themselves on Trees? An Evaluation of Suicidal Hangings on Trees in Konya,Turkey, between 2001 and 2008

Hanging is the most common method of suicide in the world, and many public places offer a means or opportunity to carry out the activity. Of 4,452 death examinations and autopsies, there were 378 (8.5%) suicides and suicide method was hanging in 185 (48.9%) cases. In 20 of these (10.8%), the suspension point was the branch of a tree. The incident location was the garden of the victim's house in nine cases, the woodlands in seven cases. The suicides were attributed to psychiatric disorders in nine cases, economic problems in six cases, and family problems in five cases. It is concluded that hanging on a tree as a suicide method is often committed by males and the underlying motive may be different in suicidal hangings on trees occurring at daytime and night. For preventional purposes, the reporting of such suicides in public places by the media may be restricted by local authorities.     

Response Assessment of Thermal Papers from Four Continents to Fingerprint Development by Heat

Latent fingerprint deposits on thermal paper sourced from the U.S., China, the U.K., and Australia have been visualized by heating. U.S. and Chinese sourced paper produced two distinct types of fingerprint development. In one type (type 1), the paper dye colors where the deposit is present (as previously reported) and in the other type (type 2) the ‘inverse’ of this gives paper coloring only in areas not coincident with the deposit. Both development types gave identifiable fingerprints, the majority fading within 24 h of heating. Fingerprint development from U.K. and Australian sourced paper was exclusively type 1 and resistant to fading. Temperatures for fingerprint visualization were higher for U.S. paper (64–71°C) and Chinese paper (75–95°C) than for U.K. and Australian sourced paper (43–50°C). Particularly for Chinese sourced paper, these temperatures were within a few degrees of the normal paper color temperature. A mechanism for type 2 fingerprint development is proposed.     

In Situ Identification of Semen Stains on Common Substrates via Raman Spectroscopy,,

The spectroscopic identification of body fluids in situ is a major objective in forensic science. This approach offers the confirmatory, nondestructive, rapid, and on‐scene identification of various body fluids. Although Raman spectroscopy has shown tremendous promise toward this goal in prior proof‐of‐concept experiments, a significant challenge which still remains is substrate interference. Here, an approach for detecting semen stains in situ on various substrates using Raman spectroscopy is explored. Simulated semen evidence was prepared on skin, glass, and various fabrics. Raman data were accumulated from stains without any pretreatment using a common confocal mapping spectrometer using 785 nm laser excitation. The results demonstrate that the spectroscopic interferences encountered by substrates can be reduced and eliminated using a combination of existing subtraction techniques and chemometric models. Heterogeneous substrates proved most challenging, however, automatic subtraction treatment, and location of fluid hotspots was able to elucidate a clear spectroscopic signature of semen in every instance.     

Identification of Natural Images and Computer‐Generated Graphics Based on Statistical and Textural Features

To discriminate the acquisition pipelines of digital images, a novel scheme for the identification of natural images and computer‐generated graphics is proposed based on statistical and textural features. First, the differences between them are investigated from the view of statistics and texture, and 31 dimensions of feature are acquired for identification. Then, LIBSVM is used for the classification. Finally, the experimental results are presented. The results show that it can achieve an identification accuracy of 97.89% for computer‐generated graphics, and an identification accuracy of 97.75% for natural images. The analyses also demonstrate the proposed method has excellent performance, compared with some existing methods based only on statistical features or other features. The method has a great potential to be implemented for the identification of natural images and computer‐generated graphics.     

Timing as a source of regulatory influence: A technical elite network analysis of global finance

Rules governing the international financial system are the subject of some of the most intense distributional battles waged in any area of global governance. Who wins and who loses such battles – and why? I develop a novel analytical framework – technical elite network (TEN) theory – which explains the widely varying levels of influence that stakeholders enjoy over global financial standards. TEN theory draws attention to how issue‐specific characteristics of international finance – in particular, its highly technical and complex nature – shape the distributional consequences of global regulatory processes. It posits that such characteristics influence distributional outcomes by (i) affecting who claims first‐mover position and, thus, sets the agenda in global financial rulemaking, and (ii) ensuring that proposals made by first movers are increasingly difficult to alter at later stages of rulemaking. I provide empirical evidence for the theory by examining two regulatory regimes that are central to the efficiency and stability of the global financial system: the Basel Committee on Banking Supervision and the International Accounting Standards Board.     

Fragmented or cohesive transnational private regulation of sustainability standards? A comparative study

Literature on private regulation recognizes the proliferation of competing regulatory organizations and approaches in various industries. Studies analyzing why fragmentation arises so far focus on single‐case studies, the exploration of single variables, or variation in types of fragmentation. This article analyzes why in certain industries and for certain issues regulatory organizations proliferate, while in others a single regulatory organization emerges which covers the entire industry. Through a comparative case study of private regulation of sustainability standards in the forestry, clothing, IT‐electronics, and chemicals industries, we show how a combination of low industrial concentration, civil society involvement in governance, and stringent standards of a first‐moving regulator offer the strongest explanation for a fragmented private regulatory field, while high industrial concentration, business‐driven governance, and lenient standards of a first‐moving regulator lead to cohesive regulation.     

群体性暴力事件形成计算分析

当前,随着社会转型的不断深化,我国进入了群体性暴力事件的高发期。为进一步了解此类事件的形成机制,降低群体性暴力事件对社会稳定带来的负面影响,作者在agent建模、社会燃烧理论以及羊群效应等理论的基础上搭建了一个群体性暴力事件的形成模型,仿真了无警力条件下群体性暴力事件自发形成的过程。大量仿真结果表明,在群体性暴力事件发生现场的区域内人员密度、“点燃”事件的类型、所在地区的可目视范围以及当地社会环境中的舆论导向等因素均会对群体性暴力事件的产生及发展带来不同程度的影响。该结果将为相关部门预防与处置群体性暴力事件提供重要的理论依据。     

有限国家责任说——构建刑事被害人国家补偿制度的主要理论基础

为了保护被害人权益,化解社会不稳定因素,国内学者纷纷呼吁,参照其他国家的先进理论构建我国刑事被害人国家补偿制度。为了使作为被害人补偿制度的理论依据——国家责任说更有科学性和说服力,宜对国家责任说的理论基础——社会契约理论进行推理和择取。结合社会契约理论,应以有限国家责任说和社会保险说为理论依据,建立我国的刑事被害人国家补偿制度。