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581.
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Louis René Beres 《冲突和恐怖主义研究》2013,36(4):299-315
Normally, assassination is a crime under international law. Yet there are rare, residual circumstances where it may be not only permissible but law enforcing. Insofar as international law is part of United States law, assassination might—in these very extraordinary circumstances—not be unlawful. Drawing on the explicit expectations of international law and the natural law foundations of U.S. municipal law, this article acknowledges that assassination must always be impermissible as an instrument of Realpolitik, but that in a world that continues to confront innocent populations with terrible harms (terrorism, war, genocide) assassination does have a proper place. Throughout this examination, philosophical and jurisprudential perspectives are fused with both pertinent tactical considerations and utilitarian calculations. 相似文献
584.
Maíra Kerpel dos Santos PhD Alexander Acosta PhD Ryan Capote BS Bakhtawar Tabassam BS James Ley PhD Martin Quirke PhD José Almirall PhD 《Journal of forensic sciences》2023,68(4):1162-1177
The 4- Aminophenol (4-AP) colorimetric test is a fast, easy-to-use, and cost-effective presumptive assay of cannabis plant material producing different chromophores with THC-rich cannabis (blue color) and with CBD-rich cannabis (pink color). The main drawback of the 4-AP test is a brief observation window where the color rapidly changes to black, limiting the utility of the test. We now report for the first time, the identification of the product chromophores between 4-AP and CBD/THC as well as propose an explanation and a solution for the color degradation of the chromophores. The identification of the chromophores is provided by spectroscopic (UV–Vis), chromatography, and mass spectrometry (TLC and LC-QToF-MS). Oxidation of excess 4-AP (Reagent A) in the presence of NaOH (Reagent B) produces the black color observed for the previously reported 4-AP tests and reported in the literature. The adjustment of reactants concentrations and volumes of 4-AP:THC/CBD to a 1:1 ratio significantly reduces the black oxidation by-product and increases the observation window up to 2 h instead of the previously reported 5–10 min. For the first time, mass spectrometry and chromatography confirmed that the reaction of THC and CBD with 4-AP produced chromophores with m/z (M + H) = 420, consistent with proposed indophenol structures. The TLC method developed confirmed the separation between CBD and THC chromophores. The specificity of the test is also reported, showing false positive results for the presence of THC (blue color) for samples of thyme and oregano. LDA and SIMCA models showed that the optimized 4-AP procedure performs better than the previously reported 4-AP color test. 相似文献
585.
Evaluating the Accuracy of Cranial Indices in Ancestry Estimation Among South African Groups 下载免费PDF全文
Leandi Liebenberg M.Sc. Kyra E. Stull Ph.D. Ericka N. L'Abbé Ph.D. Deona Botha M.Sc. 《Journal of forensic sciences》2015,60(5):1277-1282
Historically, population differences were quantified using cranial indices. Even though the application of indices is associated with numerous statistical and methodological problems, the use of cranial indices to estimate ancestry persists as demonstrated by its inclusion in several recent papers and conference presentations. The purpose of this study was to classify 207 South African crania and compare the results of five standard cranial indices to linear discriminant analysis (LDA). New sectioning points were created to contend with low classification accuracies (40–79%) and possible secular trends. Although the accuracies of the new sectioning points increased (66–87%), the accuracies associated with the stepwise LDA were higher (84%) and could classify the crania into one of the three South African groups. The results of the study demonstrate that indices cannot compete with multivariate techniques and should not be used in forensic anthropological analyses for ancestry estimation. 相似文献
586.
Frédéric Savall M.D. Marie Faruch-Bilfeld M.D. Fabrice Dedouit M.D. Ph.D. Nicolas Sans M.D. Ph.D. Hervé Rousseau M.D. Ph.D. Daniel Rougé M.D. Ph.D. Norbert Telmon M.D. Ph.D. 《Journal of forensic sciences》2015,60(6):1395-1400
Decision trees provide an alternative to multivariate discriminant analysis, which is still the most commonly used in anthropometric studies. Our study analyzed the metric characterization of a recent virtual sample of 113 coxal bones using decision trees for sex determination. From 17 osteometric type I landmarks, a dataset was built with five classic distances traditionally reported in the literature and six new distances selected using the two-step ratio method. A ten-fold cross-validation was performed, and a decision tree was established on two subsamples (training and test sets). The decision tree established on the training set included three nodes and its application to the test set correctly classified 92% of individuals. This percentage was similar to the data of the literature. The usefulness of decision trees has been demonstrated in numerous fields. They have been already used in sex determination, body mass prediction, and ancestry estimation. This study shows another use of decision trees enabling simple and accurate sex determination. 相似文献
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Michel Tétu A. H. Le Q. Clayton André Lux Wilfrid M. Dubé Guy Bernard Claude Marchand 《Canadian journal of African studies》2013,47(1):115-129
This article follows the efforts of white settlers to impose cotton as an export crop in Natal and Zululand. Touted as a commodity capable of remaking land and life in the region in the 1850s, the 1860s, and again in the 1910s and 1920s, cotton never achieved more than marginal status in the region's agricultural economy. Its story is one of historical amnesia: although faith in the region's cotton prospects dipped following each spectacular failure, it was routinely resurrected once previous failures had been accounted for, or memories of them had faded. Two crucial issues are at the centre of this episodic history. First, I explore the logistics of planned expansion, and the reasons for the repeated collapse of cotton-growing schemes. Second, I unravel the side effects of these difficult and disappointing efforts and argue that, despite repeated failure, cotton facilitated important structural changes to the region's agricultural, political and economic landscape. 相似文献
589.
ETA: From secret army to social movement – the post‐Franco schism of the Basque nationalist movement
Francisco J. Llera José M. Mata Cynthia L. Irvin 《Terrorism and Political Violence》2013,25(3):106-134
Under the Franco dictatorship, post‐Civil War generations of Basques grew up in a climate of physical violence and symbolic repression. Through the imposition of controls on all manifestations of Basque cultural and linguistic expression, the Spanish state transformed even the simplest of actions into defiant symbols of Basque identity. Rejecting, as ineffectual, attempts by the existing Basque Nationalist Party (PNV) to defend Basque culture, the more militant members of the PNV's youth organization attempted to stimulate a radical ethnic movement through a new organization, Euskadi ‘ta Askatasuna [Basque Homeland and Freedom (ETA)]. From its founding in 1959, ETA's principal goals have been the achievement of Basque independence and the revival of Basque culture and language. Its principal strategy has remained armed resistance to Spanish rule. To date, ETA has been responsible for approximately 600 deaths. In this article, we focus on the strategic and organizational evolution of ETA from secret army to social movement in the post‐Franco era. In particular, we seek to clarify the role that violence plays in the symbolic conflict of Basque/Spanish collective identities and to identify how the democratization process has influenced the strategies and tactics adopted by ETA as well as by those political organizations which have emerged from ETA and its numerous factions. 相似文献
590.
This paper analyses the impact of economic conditions on Portuguese municipal electoral outcomes. We use two extensive datasets to estimate an economic voting model which accounts for the possibility that different levels of government have different levels of responsibility for economic outcomes and for clarity of government responsibility. The empirical results indicate that the performance of the national economy is important especially if local governments are of the same party as the central government. The municipal situation is also relevant particularly in scenarios of greater clarity of national and sub-national government responsibility. 相似文献