BOOTSTRAPPING YOUR FISH OR FISHING FOR BOOTSTRAPS?: PRECISION OF WELFARE LOSS ESTIMATES FROM A GLOBALLY CONCAVE INVERSE DEMAND MODEL OF COMMERCIAL FISH LANDINGS IN THE U.S. GREAT LAKES

Replaced with revised version of paper 06/30/04.Demand and Price Analysis, Resource /Energy Economics and Policy,

Hubungan Antara Loneliness Dengan Problematic Internet Use Pada Mahasiswa Selama Masa Pandemi Covid-19

The Internet has a positive impact on daily use but if it is misused it can have a negative impact, namely problematic internet use (PIU). One of the causes of PIU is loneliness. The purpose of this study was to determine the relationship between loneliness and PIU for Faculty of Psychology UKSW students during the COVID-19 pandemic. Participants in this research are 122 Faculty of Psychology UKSW students. The measuring instrument used is the GPIUS Version 2 and UCLA Loneliness Scale Version 3. The results show that there is a positive relationship between loneliness and problematic internet use. The product moment results obtained are r = 0.246, and the significance value is 0.003 (p <0.05). That is, the higher the loneliness felt by students, the higher the problematic internet use experienced by students. On the other hand, the lower the loneliness, the lower the problematic internet use experienced. Internet memiliki dampak positif dalam penggunaannya sehari-hari tetapi jika disalahgunakan dapat memberikan dampak negatif yaitu problematic internet use (PIU). Salah satu faktor penyebab problematic internet use adalah loneliness. Tujuan penelitian ini untuk mengetahui hubungan antara loneliness dan problematic internet use pada mahasiswa Fakultas Psikologi UKSW selama masa pandemi COVID-19. Partisipan penelitian ini adalah 122 orang mahasiswa Fakultas Psikologi UKSW. Alat ukur yang digunakan yaitu Generalized Problematic Internet Use Scale Version 2 dan UCLA Loneliness Scale Version 3. Hasil penelitian menunjukan ada hubungan positif antara loneliness dengan problematic internet use. Hasil product moment yang diperoleh adalah r = 0,246, dan nilai signifikansi sebesar 0,003 (p<0,05). Artinya, semakin tinggi loneliness yang dirasakan mahasiswa, maka semakin tinggi problematic internet use yang dialami oleh mahasiswa. Sebaliknya, semakin rendah loneliness semakin rendah problematic internet use yang dialami.

I\u27d Rather Dance Outside : A Phenomenological Examination of Youth Experiences in Outdoor, Noncompetitive Physical Activity

Research has shown that youth with low levels of fitness or little interest in organized sports and traditional physical education are more likely to participate in noncompetitive outdoor physical activity. However, little is known about what influences youths’ decisions to participate in these activities. This study examined rural young adolescents’ experiences of participating in noncompetitive outdoor physical activity. In depth qualitative interviews were conducted with young adolescents aged 11-13 years (N = 24) from one rural middle school to elicit detailed descriptions of experiences of participation in outdoor physical activities. Interview transcripts were analyzed inductively and emergent themes related to young adolescents’ participation in outdoor, noncompetitive physical activity were identified. Twelve themes were categorized as either respondents’ relationship with the outdoors, activity preferences, and external conditions that determine participation. The results of the study indicate the presence of a complex dynamic relationship of social and physical environmental factors influencing young adolescents’ participation in outdoor activities. These include parental and peer influence, personal choice and enjoyment, spending time outdoors, appreciation for nature, availability of equipment, and previous experiences of participation. More research is needed to corroborate the results of the study and to better understand youths’ preferences for noncompetitive versus competitive physical activity

Parental Impact on Child Physical Activity and Sedentary Time in Appalachian North Carolina

Introduction: Physical activity has positive health benefits across the lifespan including reduced rates of chronic disease. Despite having ample availability of outdoor space for physical activity in the Appalachian Mountain region, there are low rates of physical activity along with high rates of sedentary time and increased prevalence of overweight individuals across all age groups. Therefore, there is a need to understand the factors that influence family’s physical activity and sedentary time. Purpose: To assess whether parental attitudes and behaviors influence children’s physical activity and sedentary time. Methods: The current study was a secondary analysis of the baseline data from a pilot study of a pediatrician prescription program for outdoor physical activity. Parents (N = 70) with children aged 5–13 years living in a county served by a single-pediatrician office completed surveys in the pediatrician’s office during a well-child visit. The survey included questions related to parental attitudes toward children’s physical activity and the physical activity and sedentary time performed by the parent and their child. Results: Parent sedentary time was the only factor that had an impact on child sedentary time, with 18% of the variance in children’s sedentary time being explained by parent sedentary time. No factors predicted children’s physical activity. Implications: To decrease child sedentary time, interventions should focus on reducing parental and joint parent–child sedentary time

Recruitment in Qualitative Public Health Research: Lessons Learned During Dissertation Sample Recruitment

The purpose of this article is to describe the recruitment challenges faced by eight public health graduate students when conducting qualitative dissertation research. The authors summarize their dissertation studies, describe recruitment challenges, and provide strategies and recommendations used to address challenges. The authors identified twelve recruitment issues which they grouped into three major categories: (a) obtaining consent; (b) working with gatekeepers; and (c) accessing participants. The authors propose three recommendations to consider in participant recruitment, which are: (a) collaborate with gatekeepers; (b) use additional recruitment tools; and (c) understand your target population. The compilation of experiences from multiple graduate students from a diverse selection of topics provides valuable insight and resources when planning a qualitative research study in the field of public health

Data Collection Challenges and Recommendations for Early Career Researchers

Data collection is critical to the social research process. When implemented correctly, data collection enhances the quality of a social research study. However, doctoral students and early career researchers may encounter challenges with data collection. This article reports on the data collection challenges in dissertation research encountered by doctoral students enrolled in a public health program at a southeastern United States urban university. Each doctoral student shared at least one challenge and how it affected the data collection process. Additionally, the doctoral students shared how the identified challenges were addressed or suggested recommendations. Understanding these experiences of doctoral students is helpful for doctoral students and early career researchers conducting social research. The lessons learned may guide faculty in research mentoring and structuring research seminars for doctoral students

Alcohol intake and cause-specific mortality: conventional and genetic evidence in a prospective cohort study of 512 000 adults in China

Background Genetic variants that affect alcohol use in East Asian populations could help assess the causal effects of alcohol consumption on cause-specific mortality. We aimed to investigate the associations between alcohol intake and cause-specific mortality using conventional and genetic epidemiological methods among more than 512 000 adults in China. Methods The prospective China Kadoorie Biobank cohort study enrolled 512 724 adults (210 205 men and 302 519 women) aged 30–79 years, during 2004–08. Residents with no major disabilities from ten diverse urban and rural areas of China were invited to participate, and alcohol use was self-reported. During 12 years of follow-up, 56 550 deaths were recorded through linkage to death registries, including 23 457 deaths among 168 050 participants genotyped for ALDH2-rs671 and ADH1B-rs1229984. Adjusted hazard ratios (HRs) for cause-specific mortality by self-reported and genotype-predicted alcohol intake were estimated using Cox regression. Findings 33% of men drank alcohol most weeks. In conventional observational analyses, ex-drinkers, non-drinkers, and heavy drinkers had higher risks of death from most major causes than moderate drinkers. Among current drinkers, each 100 g/week higher alcohol intake was associated with higher mortality risks from cancers (HR 1·18 [95% CI 1·14−1·22]), cardiovascular disease (CVD; HR 1·19 [1·15−1·24]), liver diseases (HR 1·51 [1·27−1·78]), non-medical causes (HR 1·15 [1·08−1·23]), and all causes (HR 1·18 [1·15−1·20]). In men, ALDH2-rs671 and ADH1B-rs1229984 genotypes predicted 60-fold differences in mean alcohol intake (4 g/week in the lowest group vs 255 g/week in the highest). Genotype-predicted alcohol intake was uniformly and positively associated with risks of death from all causes (n=12 939; HR 1·07 [95% CI 1·05−1·10]) and from pre-defined alcohol-related cancers (n=1274; 1·12 [1·04−1·21]), liver diseases (n=110; 1·31 [1·02−1·69]), and CVD (n=6109; 1·15 [1·10−1·19]), chiefly due to stroke (n=3285; 1·18 [1·12–1·24]) rather than ischaemic heart disease (n=2363; 1·06 [0·99–1·14]). Results were largely consistent using a polygenic score to predict alcohol intake, with higher intakes associated with higher risks of death from alcohol-related cancers, CVD, and all causes. Approximately 2% of women were current drinkers, and although power was low to assess observational associations of alcohol with mortality, the genetic evidence suggested that the excess risks in men were due to alcohol, not pleiotropy. Interpretation Higher alcohol intake increased the risks of death overall and from major diseases for men in China. There was no genetic evidence of protection from moderate drinking for all-cause and cause-specific mortality, including CVD. Funding Kadoorie Charitable Foundation, National Natural Science Foundation of China, British Heart Foundation, Cancer Research UK, GlaxoSmithKline, Wellcome Trust, Medical Research Council, and Chinese Ministry of Science and Technology

Seasonal Changes in the Plant Growth-Inhibitory Effects of Rosemary Leaves on Lettuce Seedlings

Plant biodiversity has been studied to explore allelopathic species for the sustainable management of weeds to reduce the reliance on synthetic herbicides. Rosemary (Rosmarinus officinalis L., syn Salvia rosmarinus Spenn.), was found to have plant growth-inhibitory effects, and carnosic acid was reported as an allelochemical in the plant. In this study, the effects of seasonal variation (2011–2012) on the carnosic acid concentration and phytotoxicity of rosemary leaves from two locations in Tunisia (Fahs and Matmata) were investigated. The carnosic acid concentration in rosemary leaves was determined by HPLC, and lettuce (Lactuca sativa L.) was used as the receptor plant in the phytotoxicity bioassay. The highest carnosic acid concentration was found in rosemary samples collected in June 2011, which also had the highest inhibitory activity. Furthermore, a significant inverse correlation (r = −0.529; p < 0.01) was found between the inhibitory activity on lettuce hypocotyl and the carnosic acid concentration in rosemary leaves. Both temperature and elevation had a significant positive correlation with carnosic acid concentration, while rainfall showed a negative correlation. The results showed that the inhibitory effects of rosemary leaf samples collected in summer was highest due to their high carnosic acid concentration. The phytotoxicity of rosemary needs to be studied over time to determine if it varies by season under field conditions.Peer Reviewe