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Analyzing the Dynamics and Morphology of Cast‐off Pattern at Different Speed Levels Using High‐speed Digital Video Imaging 下载免费PDF全文
Sebastian Niko Kunz Ph.D. Jiri Adamec Ph.D. Christina Grove M.D. 《Journal of forensic sciences》2017,62(2):428-434
During a bloodstain pattern analysis, one of the essential tasks is to distinguish between different kinds of applied forces as well as to estimate their level of intensity. In this study, high‐speed digital imaging has been used to analyze the formation of cast‐off patterns generated by a simulated backswing with a blood‐bearing object. For this purpose, 0.5 mL blood was applied evenly over the last 5 cm of a blade simulant. Bloodstains were created through the controlled acceleration of a backswing at different speed levels between 1.1 m/sec and 3.8 m/sec. The flight dynamics of blood droplets were captured with an Olympus® i‐Speed 3 high‐speed digital camera with a Nikon® AF Nikkor 50 mm f/1.8 D lens and analyzed using the Olympus i‐Speed 3 Viewer software. The video analysis showed that, during the backswing, blood droplets would move toward the lower end of the knifepoint and would be tangentially thrown off. These droplets impacted on the horizontal surface according to the arc of the swing. An increase in velocity led to longer cast‐off patterns with distinct morphological characteristics. Under laboratory conditions, bloodstain pattern analysis allows certain conclusions about the intensity of a backswing and provides instructions on the position of the offender. However, due to the number of unknown variables at a crime scene, such interpretation of cast‐off patterns is extremely limited and should be performed with extreme caution. 相似文献
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Sebastian Scheerer 《Crime, Law and Social Change》1980,4(3):341-348
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Eric J. Bartelink Ph.D. Sabrina B. Sholts Ph.D. Colleen F. Milligan Ph.D. Traci L. Van Deest Ph.D. Sebastian K.T.S. Wärmländer Ph.D. 《Journal of forensic sciences》2015,60(4):1068-1073
Since the 1980s, cremation has become the fastest growing area of the U.S. funeral industry. At the same time, the number of litigations against funeral homes and cremation facilities has increased. Forensic anthropologists are often asked to determine whether the contents of an urn are actually cremated bone, and to address questions regarding the identity of the remains. This study uses both metric and chemical analyses for resolving a case of contested cremains. A cremains weight of 2021.8 g was predicted based on the decedent's reported stature and weight. However, the urn contents weighed 4173.5 g. The urn contents also contained material inconsistent with cremains (e.g., moist sediment, stones, ferrous metal). Analysis using XRD and SEM demonstrated that the urn contained thermally altered bone as well as inorganic material consistent with glass fiber cement. Although forensically challenging, cremains cases such as this one can be resolved using a multidisciplinary approach. 相似文献
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Sebastian Oberthür 《The international spectator : a quarterly journal of the Istituto affari internazionali》2016,51(4):80-94
The Paris Agreement on climate change adopted in December 2015 has the potential to shape future climate politics and governance significantly, with broader implications for world politics at large. First of all, it solidifies the importance of ‘low-emission capacity’ as a source of power in international climate politics. Second, it supports the ongoing societal mobilisation and reinforces interest in the new climate economy. Third, it points, as a result, toward a more multipolar future climate world order. Finally, the Agreement recalibrates the role of the multilateral UN process as providing overall direction towards global decarbonisation, while leaving implementation to states, other international organisations and various non-state actors and initiatives. Therefore, phasing out global greenhouse gas emissions within the next few decades requires subnational and national policy frameworks that facilitate and promote overachievement and hence drive an upward dynamic – making the Paris Agreement a real-world experiment with an uncertain outcome. 相似文献
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Although strategic consensus is a core concept in strategic management research, empirical evidence is lacking on (1) the degree of strategic consensus in public organizations, (2) how strategic consensus is impacted by group characteristics specific to public strategic decision‐making groups, and (3) how strategic plans impact these relationships. An analysis of multisource data from 1,075 governing majority members nested in 256 Flemish municipalities (Belgium) indicates that within‐group strategic consensus varies among governing majorities and is negatively impacted by political diversity and political power, but these relationships are mediated by perceived strategic plan quality. The results indicate that the idiosyncrasies of public decision‐making groups can impede high levels of strategic consensus, but strategic plans can attenuate this effect by fulfilling a boundary‐spanning role. 相似文献
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Sebastian Rosenberg Kenny Lawson Ian Hickie 《Australian Journal of Public Administration》2023,82(2):290-301
In response to the recent Productivity Commission report into mental health, the previous Federal Government announced its intention to produce a new national agreement that lays the platform for Australia's sixth national mental health plan. It has been recommended mental health move to a more regional model of governance and planning, away from a centralised, top-down approach, partly in response to broader reforms affecting health care, and partly in direct response to consistent inquiry evidence that the mental health system remains in crisis. The past 30 years of mental health planning have been centralised. Successive national plans set a broad framework, with real decisions about mental health funding and service allocation made in the health departments of our capital cities. Will the next plan sponsor or inhibit regionality in mental health planning? This paper assesses Australia's historical approach to health planning particularly as it affected mental health and the costs arising. In learning these lessons, we propose the necessary ingredients to facilitate a regional, innovative, and effective approach to decentralised planning, for better mental health outcomes. We cannot afford to replicate the failed planning approaches of the past. 相似文献