Portable high‐resolution automated 3D imaging for footwear and tire impression capture

The forensic science community raised the need for improved evidence recognition, collection, and visualization analytical instrumentation for field and laboratory use. While the 3D optical techniques for imaging static objects have been extensively studied, there is still a major gap between current knowledge and collecting high‐quality footwear and tire impression evidence. Among optical means for 3D imaging, digital fringe projection (DFP) techniques reconstruct 3D shape from phase information, achieving camera‐pixel spatial resolution. This paper presents a high‐resolution 3D imaging technology using DFP techniques dedicated to footwear and tire impression capture. We developed fully automated software algorithms and a graphical user interface (GUI) that allow anyone without training to operate for high‐quality 3D data capture. We performed accuracy evaluations and comparisons comparing with the commercial high‐end 3D scanner and carried out qualitative tests for various impressions comparing with the current practices. Overall, our technology achieves similar levels of accuracy and resolution with a high‐end commercially available 3D scanner, while having the merits of being (1) more affordable; (2) much easier to operate; and (3) more robust. Compared with the current practice of casting, our technology demonstrates its superiority because it (1) is non‐destructive; (2) collects more evidence detail than casts, especially when an impression is fragile; (3) requires less time and money to collect each piece of evidence; and (4) results in a digital file that can easily be shared with other examiners.     

The association between childhood sexual abuse and sexual coercion in men: a test of possible mediators

ABSTRACT

We examined the associations between childhood sexual abuse (CSA), childhood physical abuse (CPA), sexual domain variables, antisocial tendencies, and sexually coercive behaviour in a non-forensic sample of 173 heterosexual men. CSA was associated with paraphilic interests and experiences, a more extensive sexual life history, and early antisocial tendencies. CPA was associated with paraphilic interests and experiences, more self-reported delinquency, higher sensation seeking, and early antisocial tendencies. Sexual domain variables (e.g. number of sexual partners, sexual interest in sadomasochism) mediated the link between CSA and sexually coercive behaviour, but antisocial domain variables (e.g. delinquency, sensation seeking) did not. Of the two sexual domains examined, extensive sexual life history rather than paraphilias mediated the association between CSA and sexually coercive behaviour. These results suggest CSA and CPA are associated with both sexual and antisocial outcomes, and that, for some victims of CSA, having an extensive sexual life history may account for the association between CSA and sexually coercive behaviour later in life.     

Anomalous authoritarianism: what,which, why?

Research on autocracies has gained new momentum in the last decade. One element of this research is the observation that some autocracies are characterised by structural conditions that are normally conducive for democracy. These ‘anomalous autocracies’ have high levels of socioeconomic development and democratic neighbour countries. The study of these cases might expose factors that are decisive for autocratic stability and studying them might give us a better understanding of barriers towards democratisation. This paper contributes to the growing literature on autocracies by mapping anomalous autocracies during the third wave of democratisation, thereby paving the way for systematic case selection in future studies. A large-N analysis of 159 cases (1975–2008) identifies Belarus, Chile, China, Cuba, Morocco, North Korea, Peru, Singapore, Swaziland, Togo and Zimbabwe. In a second step, the paper lays out a theoretical framework that centres on actors and institutions. Rulers must establish elite–elite and elite–mass interaction, and this papers argues that they can do so through quasi-compliance of elites and the masses based on traditional institutions woven into a dominant party. The paper uses the framework to tentatively examine the resilience of authoritarian rule in Swaziland and Morocco, two most-different anomalous cases. In both cases, an elaborate traditional institution has co-opted government, business and rural elites and coordinated interaction within elite circles and with the masses, in turn enabling the remarkable regime resilience.     

犹太人与欧洲文化

在这里要感谢我的朋友罗国祥教授,让我有机会来到武汉大学讲学。首先我想列举五个重要的人物来引出要讲的主题:亚伯拉罕,耶稣,马克思,弗洛伊德和爱因斯坦!摩西的名字也应该加进去。     

Empowerment,Deliberative Development,and Local-Level Politics in Indonesia: Participatory Projects as a Source of Countervailing Power

The salience of the concept of “empowerment” has been deductively claimed more often than carefully defined or inductively assessed by development scholars and practitioners alike. We use evidence from a mixed methods examination of the Kecamatan (subdistrict) Development Project (KDP) in rural Indonesia, which we define here as development interventions that build marginalized groups’ capacity to engage local-level governing elites using routines of deliberative contestation. “Deliberative contestation” refers to marginalized groups’ practice of exercising associational autonomy in public forums using fairness-based arguments that challenge governing elites’ monopoly over public resource allocation decisions. Deliberative development interventions such as KDP possess a comparative advantage in building the capacity to engage because they actively provide open decision-making spaces, resources for argumentation (such as facilitators), and incentives to participate. They also promote peaceful resolutions to the conflicts they inevitably spark. In the KDP conflicts we analyze, marginalized groups used deliberative contestation to moderately but consistently shift local-level power relations in contexts with both low and high preexisting capacities for managing conflict. By contrast, marginalized groups in non-KDP development conflicts from comparable villages used “mobilizational contestation” to generate comparatively erratic shifts in power relations, shifts that depended greatly on the preexisting capacity for managing conflict.

Administering the Overseas Vote

While there is a growing academic literature about mail-in ballots, there has been no serious academic research to date on overseas voters, even though the counting of overseas military ballots figured into the 2000 presidential election controversy. The participation of nearly 4 million overseas voters, both civilian and military, is governed by the Uniformed and Overseas Citizens Absentee Voting Act. The authors examine the reported perceptions of military and nonmilitary voters covered by this legislation using two surveys funded by the U.S. Election Assistance Commission, focusing on their perceptions of electronic means of transmitting voting materials. The authors find that civilian overseas citizens have a harder time registering and voting than military overseas citizens; that the key factor is the timely transmission of voting materials; and that, despite privacy concerns, electronic transmission of voting materials is viewed favorably.     

Elemental tests of the traditional rational voting model

A simple, robust, quasi-linear, structural general equilibrium rational voting model indicates turnout by voters motivated by the possibility of deciding the outcome is bell-curved in the ex-post winning margin and inversely proportional to electorate size. Applying this model to a large set of union certification elections, which often end in ties, yields exacting, lucid tests of the theory. Voter turnout is strongly related to election closeness, but not in the way predicted by the theory. Thus this relation is generated by some other mechanism, which is indeterminate, as no existing theory explains the nonlinear patterns of turnout in the data.