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791.
Kyle Conway M.D. J.D. Omar Rayes M.D. Theodore Brown M.D. Milad Webb M.D. Ph.D. 《Journal of forensic sciences》2020,65(3):855-859
Residential fires are a significant cause for morbidity and mortality in the United States. Death is often the result of soot and smoke inhalation causing carbon monoxide (CO) toxicity. The approximate lethal level of carboxyhemoglobin (COHb) in healthy adults has been well described. However, a significant number of medical examiner cases involve infirmed decedents, often elderly, with complex cardiovascular disease burdens. It is well known that death in these cases will occur at sublethal levels of COHb; however, increased lethality has been largely documented via anecdotal experience and lacks quantification. Fifty-five cases were identified where death resulted from smoke and soot inhalation suffered in a residential fire. The control group, with no cardiovascular disease, had an age-adjusted mean COHb level of 61.6% at the time of death. Presence of hypertensive cardiovascular disease showed a 30% reduction in COHb (age-adjusted mean 43.2%), atherosclerotic disease showed a 33% reduction (age-adjusted mean 41.5%), and combined disease presentation accounted for 41% reduction (age-adjusted mean 36.3%). When controlling for age, atherosclerotic and hypertensive cardiovascular diseases were each associated with statistically significant decreases in COHb (p < 0.01). Increasing age was associated with decreased COHb levels at 2.8% per 10 years of life (p < 0.01), even when modeled with hypertensive and atherosclerotic disease. These findings carry important public health significance, as well as practical significance for the medical examiner when interpreting COHb levels in cases of suspected deaths due to smoke and soot inhalation. 相似文献
792.
Lucas Grainger‐Brown 《澳大利亚政治与历史杂志》2019,65(2):246-258
Offshore detention and bilateral free trade constitute hallmarks of Australia's international policy. This paper explores how these policy directions were originally justified in the Pacific Solution and the Australia‐US Free Trade Agreement (AUSFTA). In the literature both policies are theorised as security offerings but whilst the Pacific Solution is obviously exclusionary, AUSFTA aimed at including Australia in the US's orbit. This suggests that security as a justification for policy is flexible, complex, and warrants closer observation of its practical articulations. Reviewing the speeches with which the relevant Ministers introduced their legislation, I argue that offshore detention and bilateral free trade derive from a specific language of security in which policy‐makers view individual actors as the basis of national threats. The language of security invokes a threatening international environment by focussing on the selfish and amoral components of human behaviour whilst diminishing social institutions and collective structures. Vague anarchy and simplified individualism position the state as a righteous protector rather than a rational policy‐maker. I conclude by questioning whether this is a sound basis for policy and canvass options for escaping the language of security. 相似文献
793.
794.
Adolescent Girls’ Experiences and Gender-Related Beliefs in Relation to Their Motivation in Math/Science and English 总被引:1,自引:0,他引:1
Campbell Leaper Timea Farkas Christia Spears Brown 《Journal of youth and adolescence》2012,41(3):268-282
Although the gender gap has dramatically narrowed in recent decades, women remain underrepresented in many science, technology,
engineering, and mathematics (STEM) fields. This study examined social and personal factors in relation to adolescent girls’
motivation in STEM (math/science) versus non-STEM (English) subjects. An ethnically diverse sample of 579 girls ages 13–18 years
(M = 15) in the U.S. completed questionnaires measuring their academic achievement, ability beliefs, values, and experiences.
Social and personal factors were hypothesized to predict motivation (expectancy-value) differently in math/science (M/S) and
English. Social factors included perceived M/S and English support from parents and peers. Personal factors included facets
of gender identity (felt conformity pressure, gender typicality, gender-role contentedness), gender-related attitudes, and
exposure to feminism. In addition, grades, age, parents’ education, and ethnicity were controlled. Girls’ M/S motivation was
positively associated with mother M/S support, peer M/S support, gender-egalitarian beliefs, and exposure to feminism; it
was negatively related to peer English support. Girls’ English motivation was positively associated with peer English support
as well as felt pressure from parents; it was negatively related to peer M/S support and felt peer pressure. The findings
suggest that social and personal factors may influence girls’ motivation in domain-specific ways. 相似文献
795.
796.
AbstractMigrants are often subject to social pressures to remit beyond their own households, to share the benefits of migration with the wider community in their home country; these are ‘community remittances’. We hypothesise that community sharing norm pressures are stronger in locations with more extensive home community networks. We also postulate that the responsiveness of remittances to sharing pressures is subject to diminishing returns, attributable to a donor fatigue effect. Using customised survey data from three Polynesian migrant groups in metropolitan and regional Australia, we estimate double-hurdle regression models of community remittances. To identify the effects of sharing norm pressures we exploit an exogenous (cyclone) shock to home country incomes affecting one sub-group. We find strong evidence in support of the postulated responsiveness of community remittances to location-related differences in sharing norm pressures, and the presence of a donor fatigue effect. The policy implications are discussed. 相似文献
797.
James D. J. Brown 《欧亚研究》2015,67(6):893-915
This article examines Russia's position on the Senkaku/Diaoyu dispute. It focuses particularly on the claim that Russia and China are forming an anti-Japanese territorial front. Looking closely at official statements and actions, as well as Russian-language media and scholarship, it finds that Russia, while retaining a position of formal neutrality, clearly considers China's claims more favourably. While this could be seen to have alarming implications by arraying China and Russia on one side against Japan and the USA on the other, the article also finds that Russia's support is not without qualifications and that its place in the conflict is not yet entrenched. 相似文献
798.
B. Bradford Brown Heather Von Bank Laurence Steinberg 《Journal of youth and adolescence》2008,37(10):1163-1177
Peer crowds serve as an identity marker for adolescents, indicating their image and status among peers; but adolescents do
not always endorse peer appraisals of crowd affiliation. We report on two studies—one with 924 adolescents in grades 7–12
and a second with a more diverse population of 2,728 students in grades 9–11, followed for 2 years—that examined how congruence
between peer and self-appraisals of crowd affiliation relate to self-esteem and internalizing symptoms. Analyses indicate
that high-status crowd members may suffer and low-status crowd members benefit by denying their peer crowd affiliation, but
effects are modest in size and not entirely consistent across the two studies. Findings underscore the value of symbolic interactionist
principles concerning reflected appraisal processes in understanding how peer crowd affiliation affects adolescent self-image.
相似文献
B. Bradford BrownEmail: |
799.