Beginning in the early 1990s, nuclear forensic science is a relatively young field that focuses on “re-establishing the history of nuclear material of unknown origin” (Mayer, et al. 2010, p. 1). Specifically, investigators compare these unknown materials, pre-detonation in this case, based on their characteristics and process history (Mayer, et al. 2010, p. 1). In 2010, the Committee of Nuclear Forensics made ten recommendations on the procedures that could lead to improvement in investigation methods. In particular, this paper discusses Recommendation 6: “The nuclear forensics community should develop and adhere to standards and procedures that are rooted in the applicable underlying principles that have been recommended for modern forensic science, including calibration using reference standards; cross-comparison with other methods; inter-laboratory comparisons; and identification, propagation, and characterization of uncertainties'' (Committee of Nuclear Forensics, 2010, p. 11). The main objective of this paper is to compile a literature review to determine how this recommendation was followed, if at all, and produce a list of suggestions that could complement any effort towards the improvement of the field. Out of the methods recommended, that which has fostered the most growth has been cross-comparison. For example, the need for human supervision has decreased, which has decreased the need for human error (Reading, et al., 2017, p. 6013). However, areas that would benefit from development are increasing the number of disciplines in the field (Croudace, et al., 2016, p. 128). These conclusions provided the basis for improvements to other existing studies like DNA and fingerprinting.
In 1996, a floral and faunal inventory of the southeastern slopes of the Marojejy Massif, which falls in a protected area known as the Parc national de Marojejy, was conducted in an ascending series of altitudinal transect zones. The 1996 research team worked in five altitudinal zones (referred to as transect zones). Between 3 October and 15 November 2021, a floral and faunal inventory was completed, replicating the locations surveyed in 1996 and closely the dates. Detected bird species were analyzed for changes in elevational distribution between 1996 and 2021. Birds were divided into three feeding behavior groups and tolerance to forest habitat degradation was considered.
Conceptualizing social capital and active transportation to school through a social-ecological model
A model, based on social ecological theory, was presented and tested to examine elements thought to influence ATS. A logistic regression analysis was run to determine the odds of students walking or biking based on the influence of each construct within the model. Results indicated that the physical and socio-cultural constructs were directly and significantly related to ATS behavior while the construct of safety had an indirect effect. These findings support the idea that there are several factors that operate within and across different ecological levels to influence the mode of transportation to school. Therefore, programs to promote ATS should involve multi-level strategies. In addition to the physical environment, interventions should address interpersonal relationships within the family, school, and neighborhood.
The purpose of this study was to evaluate how COVID-19 has affected college athletes physically and mentally. A survey with 36 questions encompassing gender, sport, COVID-19 symptom severity, type and duration, return to play factors, perceived social isolation, depression and anxiety was distributed to all student athletes at Arizona State University. A total of 26 athletes (84.6% female, 15.4% male) who previously contracted the COVID-19 virus participated in the survey, representing a variety of 12 different sports. The study concluded that as student athletes symptom severity increased, symptom duration increased as well. Between one day to 10 months of continued symptoms after returning to sport play was reported by one-third of participating student athletes; however, there was no indication that vaccination status, obtaining a negative COVID-19 test, or obtaining medical clearance prior to returning to sport play after contracting COVID-19 affected if symptoms persisted or not after returning to play. Most (92.3%) athletes reported higher levels of perceived isolation, and as social isolation scores increased, depression scores increased. Abnormal anxiety symptoms were reported by 30.8% of student athletes, and as depression scores increased, anxiety scores increased as well. Study results and further research can be utilized to improve and refine gradual return to play protocols, enhance methods of communication and integration during mass social isolation, and greater assess depression and anxiety prevalence in student athletes.
Climate change risks such as rising sea-levels, prolonged droughts, and extreme coastal weather events, are devastating for Small Island Developing States (SIDS) where both their homes and livelihoods are highly interdependent upon the ocean. These SIDS have no other viable choice but to adapt to their ever-changing environments and the rising disaster risks compounded by climate change. Although SIDS tend to receive significant attentions for the adverse impacts of climate change, less is known about the place-based adaptation measures as well as people’s lived experiences with sea-level rise, inundation, tropical storms, droughts, and more. Considering the vast area that the SIDS’ nations cover, the type of climate adaptation measures adopted may vary due to the respective country’s vulnerability and adaptive capacity, as some are more comprehensive and effective than others. This study directly responds to the existing gap in our understanding of how different nations within SIDS are prioritizing and strategizing their adaptation measures with the following research questions: “What are key adaptation strategies practiced in Small Island Developing States (SIDS) to address impacts of climate change? Are there similarities or differences in the adaptation strategies pursued by SIDS?” This study uses a conceptual framework of disaster risk and climate change adaptation developed by the IPCC AR5 (2014) to systematically review over 107 peer-reviewed journal articles, scientific reports, and a few videos. Using a systematic literature view approach as the primary research method, this study assembled, categorized, and analyzed the national as well as sub-national adaptation measures—social, institutional, and structural--of two representative countries: 1) Kiribati (a small, low-lying island with the higher level of exposure and vulnerability to climate change), and 2) Fiji (the second biggest island in the South Pacific known for bigger economy and “High Islands”). The results of the study suggest that the adopted adaptation measures were reflective of the country’s historical legacy and the existing adaptive capacity. While Kiribati has historically focused more on external migration of displaced people and more recently has prioritized structural adaptation practices (e.g., construction of coastal seawall), Fiji has been able to leverage its bigger economy and technical resources to develop more comprehensive institutional, social, and structural adaptation measures. However, it is also important to recognize that the other internal and external factors, mainly geophysical setting (low elevation of Kiribati vs the high islands of Fiji) also contribute the level of vulnerability these nations face.