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31.
Neither absolute THC content nor morphology allows the unequivocal discrimination of fiber cultivars and drug strains of Cannabis sativa L. unequivocally. However, the CBD/THC ratio remains constant throughout the plant's life cycle, is independent of environmental factors, and considered to be controlled by a single locus (B) with two codominant alleles (BT and BD). The homozygous BT/BT genotype underlies the THC‐predominant phenotype, BD/BD is CBD predominant, and an intermediate phenotype is induced by the heterozygous state (BT/BD). Using PCR‐based markers in two segregating populations, we proved that the THCA synthase gene represents the postulated B locus and that specific sequence polymorphisms are absolutely linked either to the THC‐predominant or the THC‐intermediate chemotype. The absolute linkage provides an excellent reliability of the marker signal in forensic casework. For validation, the species‐specific marker system was applied to a large number of casework samples and fiber hemp cultivars.  相似文献   
32.
Socioeconomic factors are heavily shaping the COVID-19 pandemic in South America. Consequently, societies are now facing the stark effects of lockdown, while largely failing to stop the epidemic. In Chile, this has been amplified by decision-makers who have overlooked critical socio-spatial aspects of the epidemic. Precarious living conditions, together with spatial segregation and unstable domestic economies, help explain why mitigation strategies remain unsuccessful. The article also explores how political frameworks for approaching these issues may change because of the pandemic.  相似文献   
33.
ABSTRACT

A lawsuit that argued that the method used to calculate rent limits in the Housing Choice Voucher Program promoted racial segregation in Dallas, Texas, resulted in the U.S. Department of Housing and Urban Development developing zip code-based voucher rent limits in Dallas in 2011. This rent calculation approach was then expanded to five other demonstration sites in 2012. This article analyzes whether adjusting voucher rent limits reduces a minority household’s likelihood of living in a high-minority neighborhood, improves their likelihood of living in a higher opportunity neighborhood, and reduces the disparity in location outcomes between minority and White households in the voucher program. This article finds evidence of improvements in the location outcomes of Black and Hispanic voucher households because of the use of zip code-based rent limits, but that these results are only marginal with respect to the persistent disparities in outcomes based on race within the voucher program.  相似文献   
34.
Prison officials have historically been afforded considerable discretion to administer sanctions designed to maintain order and security within a prison. Such discretion can generate disparate treatment of offender groups, but few studies have investigated whether sanction disparities exist within prisons, despite considerable research on sanctioning decisions made by other criminal justice actors. We use data collected from a nationally representative sample of inmates housed in state operated confinement facilities to examine potential influences of prison officials’ decisions to impose one type of sanction—disciplinary segregation. Multi-level analyses reveal that both legally relevant criteria such as prior misconduct history and extralegal factors such as age and holding a prison job affected whether an inmate was placed in disciplinary segregation for a rule violation. Also, prisons in which a greater proportion of the inmate population is involved in prison work and prisons with a higher density of inmates classified minimum-security use disciplinary segregation less frequently.  相似文献   
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36.
The impact of residential turnover and compositional change at the neighborhood level on local patterns of crime lies at the center of most ecological studies of crime and violence. Of particular interest is how racial and ethnic change impacts intragroup and intergroup crime. Although many studies have examined this effect using city‐level data, few have evaluated it using neighborhood‐level data. Using incident‐level data for the South Bureau Policing Area of the Los Angeles Police Department aggregated to census tracts, we use a novel methodology to construct intragroup and intergroup rates of robbery and assaults. The South Bureau has experienced dramatic demographic change as it has transitioned from a predominately African‐American area to a predominately Latino area. We find support for the social disorganization model, as racial/ethnic transition in nearby tracts leads to greater levels of intergroup violence by both groups as well as to more intragroup violence by Latinos. Such neighborhoods seem to experience a breakdown in norms, which leads to higher levels of violence in all forms. Particularly noteworthy is that intragroup crime is highest in all settings, which includes the most heterogeneous tracts. We also find support for the consolidated inequality theory, as greater inequality across the two groups leads to more violence by the disadvantaged group.  相似文献   
37.
RUTH D. PETERSON 《犯罪学》2012,50(2):303-328
In the United States and elsewhere, racial and ethnic disparities in crime and criminal justice are relatively ubiquitous. Yet the meaning of such disparities is not well understood. To address this concern, periodically there have been calls for research that takes into account the broader structural context of the racially and ethnically inequitable crime and justice patterns. However, a comprehensive approach to understanding such inequality is seldom applied in research. In this article, I review findings from a program of research on crime across race–ethnic neighborhoods that I have undertaken with Lauren J. Krivo and other colleagues to provide, and assess, such a framework. The starting point of our approach is that ethnoracial inequality in neighborhood crime is an outgrowth of a racialized social structure maintained largely through racial residential segregation. As anticipated, the findings illustrate the value added from research that embeds its assessment of crime and justice within an understanding of structured societal inequality. From these results, I call for placing race and ethnicity at the center of the study of crime and justice.  相似文献   
38.
This article investigates how colonial attitudes towards race operate alongside official multiculturalism in Canada to justify the legally exceptional exclusion of migrant farm workers from Canada's socio-political framework. The Canadian Seasonal Agricultural Workers Program is presented in this article as a relic of Canada's racist and colonial past, one that continues uninterrupted in the present age of statist multiculturalism. The legal continuation and growth in the use of non-citizens to conduct labour distasteful to Canadian nationals has provided an effective means for the Canadian state to regulate the ongoing flow of non-preferred races on the margins while promoting a pluralist and ethnically diverse political image at home and abroad. In the face of a labour shortage constructed as a political crisis of considerable urgency, the Canadian state has continued to admit non-immigrants into the country to perform labour deemed unattractive yet necessary for the well-being of Canadian citizens while simultaneously suspending the citizenship and individual rights of those same individual migrant workers. By legislating the restriction of rights and freedoms to a permanently revolving door of temporary non-citizens through the mechanism of a guest worker programme, the Canadian state is participating in the bio-political regulation of foreign nationals.  相似文献   
39.
《Patterns of Prejudice》2012,46(4):333-353
Current positive attitudes towards the historic Brown v. Board of Education of Topeka, Kansas decision are likely to mislead us into thinking that it was welcomed when announced in 1954. Beyond that, Chief Justice Warren's opinion seemed to announce two separate justifications for ruling school segregation unconstitutional: the Fourteenth Amendment principle of ‘equal protection of the laws’ and the negative effects of segregation on the self-image and self-respect of black schoolchildren. These two lines of reasoning were both important in the context of the emergence of a new ‘universalist’ way of thinking about race after the Second World War. By the late 1960s, however, this colour-blind universalism had given way to a race-conscious particularism. By that same period, the federal court system was moving to embrace race-conscious measures to insure school integration and not just desegregation, and then to allow affirmative action rather than merely requiring the abolition of racial discrimination. Thus the conflicting logics of Brown were present in the racial jurisprudence and politics of the last fifty years. Another question raised by Brown is also important: how did it comport with the progressive tradition of jurisprudence called ‘legal realism’ that was dominant up to the end of the Second World War? Surprisingly little attention has been devoted to this problem in the intellectual history of constitutional thought. One thing is clear, however: legal realism has a different origin and orientation than the ‘race and rights’ tradition that the Warren Court initiated with the Brown decision. Again, the conflicting logics of Brown reflect the two traditions of legal reasoning: one based on an appeal to rights and principles and one grounded in experience. Finally, reflection upon the half-century history of Brown reveals considerable progress in abolishing legal and political racial discrimination, although ironically more progress in integrating schools has been made in the South than the North. Moreover, such progress has come at a certain cost to black institutions in both regions of the United States. That said, there is still much to be done to overcome the effects of over a century of racial segregation.  相似文献   
40.
从严别男女政策看太平天国妇女的社会地位   总被引:1,自引:0,他引:1  
严别男女政策是太平天国起义之初为适应流动作战需要而实行的一种男女隔离政策,在一定程度上起到了妇女保护作用,但它本身不合情理,再加上执行过程中的激进、极端,对广大妇女所起的保护作用比起她们实际受到的伤害显得微乎其微。这说明太平天国领导人本身并未具有将广大妇女从被压迫的境况中解放出来的伟大志向,他们实行的看似具有妇女解放色彩的政策大多也只是军事政策的副产品。太平天国妇女的社会地位并未得到真正提高。  相似文献   
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