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141.
Evaluating Simulant Materials for Understanding Cranial Backspatter from a Ballistic Projectile 下载免费PDF全文
Raj Das Ph.D. Alistair Collins B.E. Anurag Verma B.E. Justin Fernandez Ph.D. Michael Taylor Ph.D. 《Journal of forensic sciences》2015,60(3):627-637
In cranial wounds resulting from a gunshot, the study of backspatter patterns can provide information about the actual incidents by linking material to surrounding objects. This study investigates the physics of backspatter from a high‐speed projectile impact and evaluates a range of simulant materials using impact tests. Next, we evaluate a mesh‐free method called smoothed particle hydrodynamics (SPH) to model the splashing mechanism during backspatter. The study has shown that a projectile impact causes fragmentation at the impact site, while transferring momentum to fragmented particles. The particles travel along the path of least resistance, leading to partial material movement in the reverse direction of the projectile motion causing backspatter. Medium‐density fiberboard is a better simulant for a human skull than polycarbonate, and lorica leather is a better simulant for a human skin than natural rubber. SPH is an effective numerical method for modeling the high‐speed impact fracture and fragmentations. 相似文献
142.
Exaggerating good governance: Regime type and score inflation among executive survey informants 下载免费PDF全文
Researchers and policymakers often rely on executive surveys to understand and promote good governance. In doing so, they assume that the evaluations provided by these well‐informed respondents are not systematically influenced by regime type. However, regime‐embedded executives often have a personal stake in the survey outcomes, incentivizing them to exaggerate good governance. This paper compares World Economic Forum Executive Opinion Survey responses to corollary measures of key governance concepts in democracies, anocracies, and autocracies. It finds evidence of significant score inflation among executives in closed regimes. The individual‐level mechanisms are explored in one autocracy by comparing responses from regime‐embedded informants based at firms headquartered within the country with those managing businesses headquartered abroad. These micro‐level data likewise reveal evidence of widespread inflation, particularly on items related to governance. Finally, a closer look at Transparency International's Corruption Perceptions Index demonstrates the broader impact Executive Opinion Survey inflation for measuring governance within closed regimes. 相似文献
143.
144.
Justin Desautels-Stein 《Law and Critique》2014,25(2):141-162
In recent years Duncan Kennedy has turned to the question, what is Contemporary Legal Thought? For the most part, his answers have focused on the modes of legal argument he believes are indigenous to Contemporary Legal Thought in the United States, and possibly, at a transnational or global level as well. In this article, I bracket the question of content and ask instead, if we are interested in exploring the category of a legal ‘contemporary’, how do we do so? What historiographic methods are well-suited to the task of constituting ‘Contemporary Legal Thought’? My focus here is entirely on legal structuralism, the historical method I associate with Kennedy’s work beginning in the 1970s. By the mid-1980s, legal structuralism was under assault and quickly fading from the repertoire of available styles of doing history on the left. By the turn of the century, legal structuralism appeared to have vanished. I think that this was regrettable and unnecessary, and in this article I argue for a return to structuralist historiography. I do not pretend, however, that this return entails a second coming of the totalizing, originary center. Rather, I encourage thinking about legal structuralism in the way that I understand Roland Barthes, Hayden White, and to a large extent Duncan Kennedy himself to have thought about it: as a style. And as a style, legal structuralism is worth reawakening, a style back in style once more. 相似文献
145.
Michael D. White Justin T. Ready Robert J. Kane Lisa M. Dario 《Journal of Experimental Criminology》2014,10(3):267-290
Objectives
Despite its widespread adoption by more than two-thirds of police departments in the US, there has not been a single study examining the effects of the TASER on cognitive functioning. This inquiry is important for two reasons. First, research has consistently documented cognitive deficits following exposure to electricity (the TASER is an electrical device). Second, questions have emerged regarding whether TASER exposure impairs suspects’ ability to understand and waive their Miranda rights.Methods
To explore this issue, the authors carried out a pilot study with 21 police recruits who received a TASER exposure as part of their training at the San Bernardino County (CA) Training Center. Each recruit was given a battery of cognitive tests 3–4 h before TASER exposure, within 5 min after exposure, and again 24 h after exposure.Results
Recruits experienced statistically significant reductions in several measures of cognitive functioning following TASER exposure. However, all recruits had returned to their baseline levels of functioning within 24 h. Learning effects were documented in several of the cognitive tests.Conclusions
The questions driving this study involve serious issues including constitutionally protected rights of the accused, use of force by police, and previously unexamined effects of the TASER on the human body. The pilot study represents a critical first step in exploring the effects of the TASER on cognitive functioning. Moreover, the results provided the authors with important information that will guide their larger study, a randomized controlled trial where healthy human volunteers will be randomly assigned to four groups, two of which receive a TASER exposure. 相似文献146.
Justin Parent Rex Forehand Mary Jane Merchant Mark C. Edwards Nicola A. Conners-Burrow Nicholas Long Deborah J. Jones 《Journal of family violence》2011,26(7):527-533
The role of parenting in child disruptive behaviors has received substantial support; however, the findings as to differential
effects of specific parenting behaviors (e.g., discipline) on boys’ and girls’ disruptive behavior problems have not been
consistent. The current study examined the individual, unique, and interactive relation of two types of ineffective discipline
(i.e., harsh & permissive) with child disruptive behavior for at-risk boys and girls separately. Participants were 160 parents
with 3- to 6-year-old at-risk children (47.5% girls). Findings revealed that higher levels of harsh discipline were related
to more intense disruptive behavior of both boys and girls, whereas higher levels of permissive discipline were related to
more intense disruptive behavior of only boys. Additionally, results indicated that harsh and permissive discipline did not
interact to predict child disruptive behavior problems. Clinical implications and directions for future research are discussed. 相似文献
147.
This article establishes a model of likely campaign effectiveness, before examining the intensity of constituency campaigning at the 2010 general election in Britain and its subsequent impact on electoral outcomes, using both aggregate and individual level data. It shows that constituency campaigning yielded benefits in varying degrees for all three main parties and that Labour’s constituency campaign efforts were effective despite the electoral context, and ultimately affected the overall outcome of the election. These findings have significant implications for our understanding of the circumstances under which campaigns are likely to be more or less effective, and provide further evidence that a carefully managed campaign stands the most chance of delivering tangible electoral payoffs. 相似文献
148.
Criticism of Supreme Court confirmation hearings has intensified considerably over the past two decades. In particular, there is a growing sense that nominees are now less forthcoming and that the hearings have suffered as a result. In this article, we challenge that conventional wisdom. Based on a comprehensive content analysis of every question and answer in all of the modern confirmation hearings—nearly 11,000 in total—we find only a mild decline in the candor of recent nominees. Moreover, we find that senators ask more probing questions than in the past, and that nominees are now more explicit about their reasons when they choose not to respond—two factors that may be fueling the perception that evasiveness has increased in recent years. We close with a discussion of the normative implications of our findings as well as an outline for future research into this issue. 相似文献
149.
Poklis JL Amira D Wise LE Wiebelhaus JM Haggerty BJ Poklis A 《Forensic science international》2012,220(1-3):91-96
The disposition in mice of the cannabimimetics JWH-018 and JWH-073 in blood and brain following inhalation of the smoke from the herbal incense product (HIP) "Magic Gold" containing 3.6% JWH-018, 5.7% JWH-073 and less than 0.1% JWH-398 (w/w) is presented. Specimens were analyzed by HPLC/MS/MS. The validation of the method is also presented. Five C57BL6 mice were sacrificed 20 min after exposure to the smoke of 200 mg of "Magic Gold" and a second set of five exposed mice were sacrificed after 20 h. Twenty minutes after exposure to "Magic Gold" smoke, blood concentrations of JWH-018 ranged from 42 to 160 ng/mL (mean: 88 ng/mL ± 42) and those of JWH-073 ranged from 67 to 244 ng/mL (mean: 134 ng/mL ± 62). Brain concentrations 20 min after exposure to "Magic Gold" smoke for JWH-018 ranged from 225 to 453 ng/g (mean: 317 ng/g ± 81) and those of JWH-073 ranged from 412 to 873 ng/g (mean: 584 ng/g ± 163). Twenty hours after exposure to "Magic Gold" smoke, JWH-018 was detected and quantified in only two of the five blood samples. Blood concentrations of JWH-018 were 3.4 ng/mL and 9.4 ng/mL. JWH-073 was detected in only one blood specimen 20 h after exposure at 4.3 ng/mL. Brain concentrations 20 h post exposure for JWH-018 ranged from 7 to 32 ng/g (mean: 19 ng/g ± 9). JWH-073 was not detected in 20 h post exposure brain specimens. JWH-398 was not detected in any of the blood or brain samples. The disposition data presented with the limited data available from human experience provide reasonable expectations for forensic toxicologists in JWH-018 or JWH-073 cases. As with THC after smoking marijuana, blood and brain concentrations of JWH-018 and JWH-073 after HIP smoking can be expected to rise initially to readily detected values, and then drop dramatically over the next few hours to several ng/mL or ng/g, and finally to be at extremely low or undetectable concentrations by 24h apparently due to extensive biotransformation, and redistribution to body fat. 相似文献
150.
Incarcerated women frequently report initiation of substance use and sexual encounters at an early age, and often engage in high-risk drug use and sexual behaviors as adults. This study examined the timing of first sex, drug use, and arrest, as well as their unique influences on specific risky behaviors in adulthood, among a high-risk population of rural women recruited from jails. Ages of initiation were all positively and significantly correlated, and each independently increased the likelihood of several risky behaviors in adulthood. Implications are discussed for screening, intervention, and treatment targeting high-risk women and girls in rural areas, particularly within criminal justice settings. 相似文献