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51.
Marina Aliste M.Sc. Sandra Arranz M.Sc. Alicia Sánchez-Ortega Ph.D. M. Carmen Sampedro Ph.D. Nora Unceta Ph.D. Alberto Gómez-Caballero Ph.D. Asier Vallejo Ph.D. Maria Aranzazu Goicolea Ph.D. Ramón J. Barrio Ph.D. 《Journal of forensic sciences》2020,65(4):1094-1101
Currently, aluminum stub with carbon adhesive devices are used to collect inorganic gunshot residues (GSR) from the hands of a shooter. In an ideal shooting case, the gunshot particles do not persist for more than 2 h in the hands of the shooter, provided that the hands have not been washed. However, for forensic analysis and inference, the extended persistence of GSR would be desirable. This study investigates a novel GSR sampling and detection protocol. Sampling was performed in the nostrils using swab devices impregnated in ethylenediaminetetraacetic acid (EDTA). The GSRs persisted for longer periods in nasal mucus than on the hands, and particles were detected 6 h after shooting occurred. The analytical determination was conducted by scanning laser ablation-inductively coupled plasma-mass spectrometry (SLA-ICPMS) which enable the identification of the number of particles and their elemental composition. Seventeen isotope signals corresponding to 13C, 205Tl and 15 analytes that are usually associated with the composition of GSR residues were monitored: 27Al, 29Si, 31P, 33S, 35Cl, 39K, 44Ca, 57Fe, 60Ni, 63Cu, 66Zn, 118Sn, 121Sb, 137Ba, and 208Pb. The SLA technique enabled the reduction of the swab analysis time to 40 min. The effectiveness of this methodology was evaluated with two types of firearms: a pistol and a shotgun. The results indicated that the methodology proposed for the analysis of the nasal GSR was effective and that it can improve or complement the forensic analyses and inferences presented in a court. 相似文献
52.
Selva Lewin-Bizan Alicia Doyle Lynch Kristen Fay Kristina Schmid Caitlin McPherran Jacqueline V. Lerner Richard M. Lerner 《Journal of youth and adolescence》2010,39(7):751-763
Although the positive youth development (PYD) model initially assumed inverse links between indicators of PYD and of risk/problem
behaviors, empirical work in adolescence has suggested that more complex associations exist between trajectories of the two
domains of functioning. To clarify the PYD model, this study assessed intraindividual change in positive and problematic indicators
across Grades 5–10, and the links between these trajectories of development, among 2,516 participants from the 4-H Study of
PYD (58.1% females; 64.9% European American, 7.0% African American, 12.3% Latino/a American, 2.6% Asian American or Pacific
Islander, 1.8% Native American, 3.0% multiethnic-racial, and 8.4% with inconsistent race/ethnicity across waves). Results
from person-centered analyses indicated that most youth clustered in the high trajectories of positive indicators and in the
low trajectories of the negative ones. Consistent with past research, overlap between trajectories of positive and negative
behaviors was found. These results suggest that theory and application need to accommodate to variation in the links between
positive and problematic developmental trajectories. 相似文献
53.
Alicia R. Grosso 《Journal of forensic sciences》2022,67(1):102-111
Forensic research has demonstrated that tooth hop (TH) is a valuable measurement from saw-cut bones as it can be used to estimate teeth-per-inch (TPI) of a saw used in postmortem dismemberment cases. However, error rates for TPI estimation are still under development and knowledge of how bone tissue affects TH measurements remains unclear. The purpose of this research was to investigate the effects of tissue variability through the use of different taxa on the accuracy and precision of TH measurements in the bone to estimate TPI of the blade. A total of 1766 TH measurements were analyzed from human, pig, and deer long bones cut by two 7 TPI saw blades of different tooth type. Fifty distance-between-teeth measurements before and after sawing were collected directly from each blade for comparison to bone-measured TH to assess potential effects of tooth wear on TH variability. ANOVA and F tests were used to compare mean TH and variance, respectively, by saw-species (i.e., crosscut-deer, rip-deer) and species groups (i.e., all deer, all pig), with significance determined at the p < 0.05 level. TH measurements were converted to usable TPI ranges, which would typically be presented in a forensic report. It is concluded that significant differences in TH (mm) do not necessarily reflect significant differences in associated TPI ranges of suspect blades. Forensic reports should report mean TPI ± 1.5–2.5 TPI while providing a sample size indicating number of TH measured rather than just number of cuts or cut surfaces examined. 相似文献
54.
Motivated by the timelines set forth by the Adoption and Safe Families Act of 1997, courts are working toward moving cases safely and expeditiously through the juvenile dependency court system. One strategy to improve timeliness is the implementation of a one family, one judge (OFOJ) model. This study examines the effects of OFOJ implementation on timeliness of case processing. Implementation of the OFOJ model showed a trend toward improved timeliness. Post‐OFOJ cases were quicker to reach case closure than pre‐OFOJ cases. Every additional judge on the case increased time to permanency (i.e., case closure) by 31 days, which means children are spending one additional month in care per judge. Resolving cases quicker could improve the courts' ability to meet statutory timelines, and could lead to better outcomes for children and families. 相似文献
55.
This paper presents an overview of the Courts Catalyzing Change: Achieving Equity and Fairness in Foster Care Preliminary Protective Hearing Benchcard Study. In the fall of 2009, the National Council of Juvenile and Family Court Judges (NCJFCJ) began a study to examine the effects associated with judges' use of the Preliminary Protective Hearing Benchcard. For this study, data were gathered from case file information (both court and agency files) and from courtroom observations of more than 500 children in Los Angeles, California; Omaha, Nebraska; and Portland, Oregon. Data from a baseline sample were collected at each of the three sites, and judicial officers at each site were randomly assigned to either a Benchcard group or a control group. Benchcard implementation appears to be associated with more discussion and higher quality discussion of key dependency topics during preliminary protective hearings. Benchcard implementation also corresponds to increased judicial inquiry and parental engagement. Benchcard use also was associated with more family placements—placement with a charged parent, a non‐charged parent, or a relative—at the initial hearing and even more family placement at adjudication when comparing the same judges before and after Benchcard implementation. Similarly, the percentage of children who were reunified with the charged parent at the initial hearing and the adjudication hearing increased after Benchcard implementation. 相似文献
56.
Yochai Benkler Hal Roberts Robert Faris Alicia Solow-Niederman Bruce Etling 《政治交往》2013,30(4):594-624
This article investigates the public debate over proposed U.S. legislation designed to give prosecutors and copyright holders new tools to pursue suspected online copyright violations. We compiled, mapped, and analyzed a set of 9,757 stories published over 16 months relevant to the Combating Online Infringement and Counterfeits Act (COICA), Stop Online Piracy Act (SOPA), and PROTECT IP Act (PIPA). This study applies a mixed-methods approach that combines text and link analysis with human coding and informal interviews to map the evolution of the controversy over time and to analyze the mobilization, roles, and interactions of various actors. We find a vibrant, diverse, and decentralized networked public sphere that exhibited broad participation, leveraged topical expertise, and successfully reframed a debate and focused public sentiment to shape national public policy. A network of small-scale commercial tech media, nongovernmental organizations (NGOs), and individuals fulfilled the fourth estate function; traditional media then amplified the work of these actors. The campaign involved substantial experimentation and rapid development of mobilization strategies. We observe an increased public awareness of an agenda originating in the networked public sphere, which emerged successfully despite substantial expenditures attempting to produce a mass media narrative that favored the legislation. Moreover, we witness what we call an attention backbone, in which more trafficked sites amplify less-visible individual voices on specific subjects. The data suggest that, at least in this case, the networked public sphere enabled a dynamic public discourse that involved both individual and organizational participants and offered substantive discussion of complex issues contributing to affirmative political action. 相似文献
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60.
Alicia Carroll 《Women's Studies: An inter-disciplinary journal》2013,42(2):165-197
The lush dairy settings in George Eliot's Adam Bede and Thomas Hardy's Tess of the d'Urbervilles have traditionally been perceived as timeless, 相似文献