332 research outputs found
Civil Liberties and Volunteering in Six Former Soviet Union Countries
To contribute to the debate as to whether volunteering is an outcome of
democratization rather than a driver of it, we analyze how divergent democratization
pathways in six countries of the former Soviet Union have led to varied levels of
volunteering. Using data from the European Values Study, we find that Latvia, Lithuania,
and Estonia—which followed a Europeanization path—have high and increasing levels
of civil liberties and volunteering. In Russia and Belarus, following a pre-emption path,
civil liberties have remained low and volunteering has declined. Surprisingly, despite
the Orange Revolution and increased civil liberties, volunteering rates in Ukraine
have also declined. The case of Ukraine indicates that the freedom to participate
is not always taken up by citizens. Our findings suggest it is not volunteering that
brings civil liberties, but rather that increased civil liberties lead to higher levels of
volunteerin
A comparative study of legitimation strategies in hybrid regimes
The Institutions of Politics; Design, Workings, and implications ( do not use, ended 1-1-2020
Eyes wide shut::democratic reversals, scientific closure, and the study of politics in Eurasia
Objectives: The article examines the relationship between democratic reversals and scientific closure. It focuses on the effects that authoritarian and hybrid regimes are likely to have on the ways scholars study them and conduct their fieldwork.Method: Thematic content analysis of articles on Eurasian politics published over a ten year period, with particular attention paid to reported methods and fieldwork. Results: Scientific closure had as much to do with research cycles in the discipline as with democratic reversals. Notions of the region as democratizing persisted into the 2000s as scholars recycled data and conceptual frames from the 1990s. Fieldwork-driven research was more likely to detect autocratization. Conclusion: While disciplinary consensus re-framed the region as autocratizing, the field remains vulnerable to scientific closure. Aside from the challenges posed by autocracies for fieldwork, the new disciplinary consensus may deter qualitative fieldwork and innovation in studying authoritarianism in Eurasia
The direction of effects between perceived parental behavioral control and psychological control and adolescents’ self-reported GAD and SAD symptoms
This study examined the direction of effects and age and sex differences between adolescents’ perceptions of parental behavioral and psychological control and adolescents’ self-reports of generalized anxiety disorder (GAD) and separation anxiety disorder (SAD) symptoms. The study focused on 1,313 Dutch adolescents (early-to-middle cohort n = 923, 70.3%; middle-to-late cohort n = 390, 29.7%) from the general population. A multi-group, structural equation model was employed to analyze the direction of the effects between behavioral control, psychological control and GAD and SAD symptoms for the adolescent cohorts. The current study demonstrated that a unidirectional child effect model of the adolescents’ GAD and SAD symptoms predicting parental control best described the data. Additionally, adolescent GAD and SAD symptoms were stronger and more systematically related to psychological control than to behavioral control. With regard to age–sex differences, anxiety symptoms almost systematically predicted parental control over time for the early adolescent boys, whereas no significant differences were found between the late adolescent boys and girls
Unusual Dengue Virus 3 Epidemic in Nicaragua, 2009
The four dengue virus serotypes (DENV1–4) cause the most prevalent mosquito-borne viral disease affecting humans worldwide. In 2009, Nicaragua experienced the largest dengue epidemic in over a decade, marked by unusual clinical presentation, as observed in two prospective studies of pediatric dengue in Managua. From August 2009–January 2010, 212 dengue cases were confirmed among 396 study participants at the National Pediatric Reference Hospital. In our parallel community-based cohort study, 170 dengue cases were recorded in 2009–10, compared to 13–65 cases in 2004–9. In both studies, significantly more patients experienced “compensated shock” (poor capillary refill plus cold extremities, tachycardia, tachypnea, and/or weak pulse) in 2009–10 than in previous years (42.5% [90/212] vs. 24.7% [82/332] in the hospital study (p<0.001) and 17% [29/170] vs. 2.2% [4/181] in the cohort study (p<0.001). Signs of poor peripheral perfusion presented significantly earlier (1–2 days) in 2009–10 than in previous years according to Kaplan-Meier survival analysis. In the hospital study, 19.8% of subjects were transferred to intensive care, compared to 7.1% in previous years – similar to the cohort study. DENV-3 predominated in 2008–9, 2009–10, and 2010–11, and full-length sequencing revealed no major genetic changes from 2008–9 to 2010–11. In 2008–9 and 2010–11, typical dengue was observed; only in 2009–10 was unusual presentation noted. Multivariate analysis revealed only “2009–10” as a significant risk factor for Dengue Fever with Compensated Shock. Interestingly, circulation of pandemic influenza A-H1N1 2009 in Managua was shifted such that it overlapped with the dengue epidemic. We hypothesize that prior influenza A H1N1 2009 infection may have modulated subsequent DENV infection, and initial results of an ongoing study suggest increased risk of shock among children with anti-H1N1-2009 antibodies. This study demonstrates that parameters other than serotype, viral genomic sequence, immune status, and sequence of serotypes can play a role in modulating dengue disease outcome
Screening and Optimizing Antimicrobial Peptides by Using SPOT-Synthesis.
Peptide arrays on cellulose are a powerful tool to investigate peptide interactions with a number of different molecules, for examples antibodies, receptors or enzymes. Such peptide arrays can also be used to study interactions with whole cells. In this review, we focus on the interaction of small antimicrobial peptides with bacteria. Antimicrobial peptides (AMPs) can kill multidrug-resistant (MDR) human pathogenic bacteria and therefore could be next generation antibiotics targeting MDR bacteria. We describe the screen and the result of different optimization strategies of peptides cleaved from the membrane. In addition, screening of antibacterial activity of peptides that are tethered to the surface is discussed. Surface-active peptides can be used to protect surfaces from bacterial infections, for example implants
Longitudinal associations between television in the bedroom and body fatness in a UK cohort study.
OBJECTIVE: To assess longitudinal associations between screen-based media use (television (TV) and computer hours, having a TV in the bedroom) and body fatness among UK children. METHODS: Participants were 12 556 children from the UK Millennium Cohort Study who were followed from age 7 to age 11 years. Associations were assessed between screen-based media use and the following outcomes: body mass index (BMI), fat mass index (FMI), and overweight. RESULTS: In fully adjusted models, having a bedroom TV at age 7 years was associated with significantly higher BMI and FMI (excess BMI for boys=0.29, 95% confidence interval (CI) 0.06-0.52; excess BMI for girls=0.57, 95% CI 0.31-0.84; excess FMI for boys=0.20, 95% CI 0.04-0.37; excess FMI for girls=0.39, 95% CI 0.21-0.57) and increased risk of being overweight (relative risk (RR) for boys=1.21, 95% CI 1.07-1.36; RR for girls=1.31, 95% CI 1.15-1.48) at age 11 years, compared with having no bedroom TV. Hours spent watching TV or digital versatile disks were associated with increased risk of overweight among girls only. Computer use at age 7 years was not related to later body fatness for either gender. CONCLUSION: Having a TV in the child's bedroom was an independent risk factor for overweight and increased body fatness in this nationally representative sample of UK children. Childhood obesity prevention strategies should consider TVs in children's bedrooms as a risk factor for obesity.International Journal of Obesity advance online publication, 27 June 2017; doi:10.1038/ijo.2017.129
The Rapid ASKAP Continuum Survey I: Design and First Results
The Rapid ASKAP Continuum Survey (RACS) is the first large-area survey to be
conducted with the full 36-antenna Australian Square Kilometre Array Pathfinder
(ASKAP) telescope. RACS will provide a shallow model of the ASKAP sky that will
aid the calibration of future deep ASKAP surveys. RACS will cover the whole sky
visible from the ASKAP site in Western Australia, and will cover the full ASKAP
band of MHz. The RACS images are generally deeper than the existing
NRAO VLA Sky Survey (NVSS) and Sydney University Molonglo Sky Survey (SUMSS)
radio surveys and have better spatial resolution. All RACS survey products will
be public, including radio images (with arcsecond resolution) and
catalogues of about three million source components with spectral index and
polarisation information. In this paper, we present a description of the RACS
survey and the first data release of 903 images covering the sky south of
declination made over a 288 MHz band centred at 887.5 MHz.Comment: 24 pages, 17 figures, 4 tables. For associated data see
https://data.csiro.au/collections/domain/casdaObservation/results/PRAS110%20-%20The%20Rapid%20ASKAP%20Continuu
Age of the Association between Helicobacter pylori and Man
When modern humans left Africa ca. 60,000 years ago (60 kya), they were already infected with Helicobacter pylori, and these bacteria have subsequently diversified in parallel with their human hosts. But how long were humans infected by H. pylori prior to the out-of-Africa event? Did this co-evolution predate the emergence of modern humans, spanning the species divide? To answer these questions, we investigated the diversity of H. pylori in Africa, where both humans and H. pylori originated. Three distinct H. pylori populations are native to Africa: hpNEAfrica in Afro-Asiatic and Nilo-Saharan speakers, hpAfrica1 in Niger-Congo speakers and hpAfrica2 in South Africa. Rather than representing a sustained co-evolution over millions of years, we find that the coalescent for all H. pylori plus its closest relative H. acinonychis dates to 88–116 kya. At that time the phylogeny split into two primary super-lineages, one of which is associated with the former hunter-gatherers in southern Africa known as the San. H. acinonychis, which infects large felines, resulted from a later host jump from the San, 43–56 kya. These dating estimates, together with striking phylogenetic and quantitative human-bacterial similarities show that H. pylori is approximately as old as are anatomically modern humans. They also suggest that H. pylori may have been acquired via a single host jump from an unknown, non-human host. We also find evidence for a second Out of Africa migration in the last 52,000 years, because hpEurope is a hybrid population between hpAsia2 and hpNEAfrica, the latter of which arose in northeast Africa 36–52 kya, after the Out of Africa migrations around 60 kya
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