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Erin E. Waddell Ph.D. Jessica L. Frisch‐Daiello Ph.D. Mary R. Williams M.S. Michael E. Sigman Ph.D. 《Journal of forensic sciences》2014,59(5):1198-1204
Gas chromatography–mass spectrometry (GC–MS) data of ignitable liquids in the Ignitable Liquids Reference Collection (ILRC) database were processed to obtain 445 total ion spectra (TIS), that is, average mass spectra across the chromatographic profile. Hierarchical cluster analysis, an unsupervised learning technique, was applied to find features useful for classification of ignitable liquids. A combination of the correlation distance and average linkage was utilized for grouping ignitable liquids with similar chemical composition. This study evaluated whether hierarchical cluster analysis of the TIS would cluster together ignitable liquids of the same ASTM class assignment, as designated in the ILRC database. The ignitable liquids clustered based on their chemical composition, and the ignitable liquids within each cluster were predominantly from one ASTM E1618‐11 class. These results reinforce use of the TIS as a tool to aid in forensic fire debris analysis. 相似文献
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Childhood abuse can have significant negative effects on survivors that often last into adulthood. The purpose of this study was to explore the role of romantic attachment in understanding the relationship between childhood abuse and posttraumatic stress disorder (PTSD) symptoms in adulthood. Data for this study were taken from the first wave of a five-wave longitudinal study. The sample included 120 mothers in their third trimester of pregnancy. Regression analyses were conducted in order to examine adult romantic attachment as a possible protective or vulnerability factor. Main effects of attachment anxiety and attachment avoidance on PTSD symptoms were found, such that higher levels of attachment anxiety and attachment avoidance were related to more PTSD symptoms. Attachment avoidance moderated this relationship, such that child abuse was significantly related to greater PTSD symptoms in those with high attachment avoidance. Implications for attachment-based interventions are discussed. 相似文献
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Erin Trouth Hofmann 《后苏联事务》2018,34(1):1-16
Turkmenistan has experienced increasing educational migration, and many of these students hope to return home after graduating. The ability of returned migrants to succeed in Turkmenistan’s labor market is complicated by a variety of factors, including variation in educational quality across countries, intrusive state regulation of foreign education, and Turkmenistan’s large informal sector. Based on a survey of 98 Turkmen citizens, this study compares the career trajectories and perceptions of the labor market of people educated in Turkmenistan to those educated elsewhere. Because men and women undertake different strategies of educational migration, it also compares patterns of labor market integration by gender. Country of education does appear to matter for employment in Turkmenistan, but the effect is most prominent immediately after graduation. Women were less likely to be employed in Turkmenistan, partly because they were more likely to have been educated abroad, and more likely to have a partner abroad. 相似文献
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A qualitative secondary analysis explored stories of mothers (n = 49) who left violent relationships (VRs) through a lens of maternal identity. Constant comparative method identified a theory of Awakened Maternal Identity (AMI) and Leaving VR for the Infant/Children. Mothers described how the VR diminished their maternal identity (DMI). Partners controlled the VR though unrealistic infant care expectations, criticisms of infant care, harsh parenting, and control over mothering decisions. DMI lowered the mother’s capacity to provide emotionally nurturing infant care. Over time, mothers experienced AMI- as their ‘eyes were opened’ they experienced a stronger sense of mothering responsibility, focused more on the infants and children, and eventually prioritized their relationship with the infants and children over the partner. AMI seemed a turning point that led to leaving the VR for the infants/children. Recommendations offered for professionals to foster AMI as potential means to initiate the leaving VRs. 相似文献
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In northern Uganda, children and youth once abducted by the notorious Lord's Resistance Army now live in internally displaced persons camps, facing challenging social, economic and security conditions. Within this context, former combatants state they would prefer to rearm than face a ‘painful’ and inevitable death. Drawing on qualitative interviews and focus group discussions with over 300 former combatants, we apply a socio-ecological lens to determine the push/pull factors that influence their decision to rearm or disarm. A lack of personal security, levels of stigmatisation and poor economic and educational opportunities are among the highest push factors toward rearmament. These findings point to a broad range of causes and actors responsible for child and youth militarisation and call for more holistic DDR approaches. 相似文献
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This study uses an intersectional approach to examine the “paradox” that disadvantaged victims often mobilize the police, despite their distrust and lack of confidence in the law. Data from the National Crime Victimization Survey (1994–2016) were analyzed using logistic regression to model the predicted probabilities of police notification by victims of crime. Economic disadvantage, as measured by family poverty and lack of a high school education, increased the probability that females reported their victimization to the police, but decreased the likelihood that males did so. Economically disadvantaged black females had the highest probability of reporting, while economically disadvantaged black and Hispanic males had the lowest. Examining the intersectional differences across social groups shows that reporting behavior is not just a function of one attribute but rather is a function of multiple identities and structural inequalities. 相似文献
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Use of an Automated Nested Multiplex Respiratory Pathogen PCR Panel Postmortem in the Pediatric Forensic Setting 下载免费PDF全文
Tiffany Baker M.D. Ph.D. Cynthia Schandl M.D. Ph.D. Susan Erin Presnell M.D. James Madory D.O. Frederick S. Nolte Ph.D. Nicholas Batalis M.D. 《Journal of forensic sciences》2017,62(5):1223-1228
Respiratory pathogens have been detected in forensic investigations using multiple techniques; however, no study has examined the use of automated, nested, multiplex polymerase chain reaction (ANM‐PCR), commonly used in living patients, in the forensic setting. This retrospective study assessed the utility of ANM‐PCR in detecting respiratory pathogens in the pediatric forensic setting. Respiratory samples from 35 cases were tested for up to 20 respiratory pathogens. 51.4% of these cases yielded a positive ANM‐PCR result, 20% of which were considered the cause of or contributory to death. The most commonly detected pathogens were rhinovirus/enterovirus and respiratory syncytial virus, and these were the only pathogens determined to play a significant role in cause of death. The sampled sites and postmortem intervals tested did not affect the likelihood of a positive or negative test. ANM‐PCR panels are effective, affordable, and rapid ancillary tools in evaluating cause of death in the forensic pediatric population. 相似文献