bluuebunny/crossref_metadata_2025_split huggingface dataset:
Improvement of proton energy in high-intensity laser-nanobrush target interactions
Authors: Yu Jinqing , Zhou Weimin , Jin Xiaolin , Cao Lihua , Zhao Zongqing , Hong Wei , Li Bin , Gu Yuqiu 
Published: April 2012

AbstractIn order to improve the total laser-proton energy conversion efficiency, a nanobrush target is proposed for proton acceleration and investigated by two-dimensional particle-in-cell simulation. The simulation results show that the nanobrush target significantly enhances the energy and number of hot electrons through the target rear side. Compared with plain target, the sheath field on the rear surface is increased near 100% and the total laser-proton energy conversion efficiency is prompted more than 70%. Furthermore, the proton divergence angle is less than 30° by using nanobrush target. The proposed target may serve as a new method to increase the energy conversion efficiency from laser to protons.
Safety and quality of food from animals: the consumers' view
Authors: Moore J. M. 
Published: April 2012

AbstractTo assess any system that provides goods or services, the National Consumer Council has developed a number of consumer criteria to judge how well they perform from the consumers' point of view. They include price, safety, access, choice, information, redress, efficiency, equity, public accountability and consumer representation. When it comes to food, consumers are naturally interested in the price, quality, safety and choice of food products available to them. This presupposes that all have access to a secure supply of staple foods: a fundamental right of all consumers.Quality covers many aspects such as the variety, content, composition, nutritional value, taste, freshness and appearance of foods and recently, animal welfare has become associated with quality in the perception of consumers. Safety issues in the 1990s include additives, veterinary drug residues, pesticide residues, microbiological contamination and biotechnology.
PRE-COVERAGE ASSESSMENTS OF NEW HOSPITAL INTERVENTIONS ON AUSTRIA: METHODOLOGY AND 3 YEARS OF EXPERIENCE
Authors: Mad Philipp , Geiger-Gritsch Sabine , Hinterreiter Gerda , Mathis-Edenhofer Stefan , Wild Claudia 
Published: April 2012

Objectives: A new decision-making process was set up by the Austrian Ministry of Health to regulate coverage of new proposed Extra Medical Services (EMS; German: Medizinische Einzel-Leistung [MEL]) in 2008. As part of the annual decision-making process an independent academic institution (LBI-HTA) is evaluating relevant evidence on these new technologies and provides HTAs, including evidence-based recommendations for decision makers.Methods: About ten EMS assessments are performed annually by the LBI-HTA simultaneously between January and March. Each peer-reviewed report consists of a systematic literature review and critical appraisal of evidence using the GRADE methodology. The generation of numerous reports of good quality standards within the short timeframe is achieved by a standardized workflow with predefined assignment of tasks for all participants.Results: In total, the LBI-HTA performed twenty-five EMS assessments on thirty-three different interventions in the last three years. Coverage was recommended with limitation for eleven (33%) interventions, and not recommended for twenty-two (66%) interventions. The federal health commission decided on acceptance or preliminary acceptance of coverage in seven (22%) cases, rejection in eighteen (55%) cases and changed the status to “subject to approval” in seven (24%) cases.Conclusions: Pre-coverage assessment of new hospital interventions was implemented successfully in Austria. It has proved to be a useful tool to support decision makers with objective evidence when deciding whether or not to reimburse medical services.
The effects and implications of disturbance of mycorrhizal mycelial systems
Authors: Read D. J. , Birch C. P. D. 
Published: April 2012

SynopsisThe likely consequences of disturbance of the mycorrhizal mycelial network in soil are considered, emphasis being placed on the impact of small-scale events upon infection in vesicular-arbuscular and ectomycorrhizal systems. The importance of the intact network is stressed and the effects of its disruption upon infection processes and upon the nutrition of natural plant communities and of crops is analysed. It is considered that the most serious effect of disturbance will be to reduce the inoculum potential of the fungi and hence to decrease the vigour of infections that occur. The impact of these effects is likely to be felt most seriously at the stage of seedling establishment, and the interactions between disturbance events, mycorrhizal infection and plant successional processes are discussed.
Epidemiology and clinical outcomes of patients withFusobacteriumbacteraemia
Authors: GOLDBERG E. A. , VENKAT-RAMANI T. , HEWIT M. , BONILLA H. F. 
Published: April 2012

SUMMARYThis 10-year retrospective study assessed the epidemiology and outcomes of patients withFusobacteriumbacteraemia (FB) at a tertiary-care hospital in the USA – this is the second study focusing on FB in adults to be conducted in the USA in 30 years. Demographic, clinical, laboratory, treatment, and outcome data were collected and statistically analysed. Nineteen patients with FB were identified, representing 0·11% of bacteraemia cases. Mean age was 58·6 years with equal gender distribution. Common comorbidities included cardiovascular disease (CVD) and immunosuppression. Thirty-day mortality was 21·1%, and 68·4% of FB patients required intensive care unit (ICU) admission. Elevated creatinine levels and mental status changes were associated with higher mortality (P = 0·0181 and 0·0374, respectively). CVD, diabetes, and ICU admission were associated with increased length of hospital stay (P = 0·0017, 0·0010, and 0·0379, respectively). The prevalence of FB at our hospital was very low, with poor outcomes associated with increased creatinine level, mental status changes, CVD, diabetes and ICU admission.
Resilience in developmental psychopathology: Contributions of the Project Competence Longitudinal Study
Authors: Masten Ann S. , Tellegen Auke 
Published: April 2012

AbstractContributions of the Project Competence Longitudinal Study (PCLS) to resilience science and developmental psychopathology are highlighted in this article. Initiated by Norman Garmezy, the PCLS contributed models, measures, and methods, as well as working definitions of concepts like competence, developmental tasks, protective factors, and resilience. Findings from the study corroborated the feasibility of studying adaptation in a normative group of school children, identifying patterns of resilience, competence without major adversity, and maladaptive paths through life. Competence was multidimensional, showing continuity and change over time. Cascading effects across domains indicated that competence and problems spread over time. Thus, adult achievements in developmental tasks were rooted in childhood and adolescence. Young people who showed resilience had much in common with similarly successful peers who experienced less adversity over time, including high-quality relationships with parents and other adults, and good cognitive, as well as social–emotional, skills. Maladaptive youth in the study often faced high adversity with little adaptive capacity (internal or external) and tended to generate stressful experiences. Resilience often emerged in childhood and endured, but there also were late bloomers whose lives turned around in the transition to adulthood. The role of collaboration and mentorship in the PCLS is also discussed.
Are affluent youth truly “at risk”? Vulnerability and resilience across three diverse samples
Authors: Luthar Suniya S. , Barkin Samuel H. 
Published: April 2012

AbstractBuilding upon prior findings of elevated problems among East Coast suburban youth through the 11th grade, this study establishes disproportionately high incidence of maladjustment across three disparate samples: East Coast Suburban youth at the end of their senior year in high school, and 11th and 12th graders in (a) a Northwest suburb and (b) an East Coast city. Both East Coast samples showed pronounced elevations in substance use, whereas the Northwest suburban sample showed marked vulnerability in serious internalizing and externalizing symptoms. Across all samples, parents’ low perceivedcontainment for substance use(lax repercussions on discovering use) was a major vulnerability factor, followed by parents’ knowledge of their teens’ activities. Overall, adolescents’ symptom levels were more strongly related to their relationships with mothers than with fathers. An exception was boys’ apparent vulnerability to fathers’, but not mothers’, perceived depressive symptoms. As with affluent eighth graders, we found that “overscheduling” in extracurriculars is not a critical vulnerability factor among these high school students. Finally, youth reports suggested that most affluent parents do not indiscriminately bail their children out of all problem situations (although a small subset, apparently, do). Results are discussed along with the implications for practice and for future research.
The adaptation and well-being of adolescent immigrants in Greek schools: A multilevel, longitudinal study of risks and resources
Authors: Motti-Stefanidi Frosso , Asendorpf Jens B. , Masten Ann S. 
Published: April 2012

AbstractThis study examined growth patterns in adaptation of immigrant youth from a risk and resilience perspective. Students from first- and second-generation immigrant families living in Greece and their nonimmigrant classmates (N= 1,057) were assessed over the first 3 years of secondary school (ages 13–15). Three-level hierarchical linear models were used to disentangle individual and classroom-level effects on initial level and change in academic achievement, conduct, peer popularity, and psychological well-being. At the individual level, adaptation was more related to self-efficacy and parental school involvement (resources) than immigrant status and social adversity (risks). Only for academic achievement did risks explain variance when resources were controlled. Parental school involvement moderated the effect of immigrant status for initial level and growth in achievement. For all students, achievement and conduct worsened over time. At the classroom level, socioeconomic and ethnic composition of the classroom moderated the effects of self-efficacy and immigrant status on academic achievement and peer popularity, respectively. Second-generation immigrants were more popular than first-generation immigrants, but showed a larger decrease over time in school achievement. Results support a developmental, differentiated, and contextualized approach to the study of immigrant youth adaptation.
In search of security: The latent structure of the Adult Attachment Interview revisited
Authors: Haydon Katherine C. , Roisman Glenn I. , Burt Keith B. 
Published: April 2012

AbstractBuilding on Roisman, Fraley, and Belsky, who produced evidence for two modestly correlated dimensions (i.e., dismissing and preoccupied states of mind) underlying individual differences in attachment as assessed by the Adult Attachment Interview using the Main and Goldwyn classification system, this report replicates and extends relevant evidence in a large sample of adults (N = 842) who completed the Adult Attachment Interview coded using Kobak's Adult Attachment Interview Q-Sort. Principal components analysis of item-level Q-Sort data yielded two state of mind (dismissing vs. free to evaluate and preoccupied vs. not) and two inferred experience (maternal and paternal) components that were associated with two domains of theoretical significance to attachment theory: interpersonal functioning in a romantic context and symptoms of psychopathology. Results revealed distinctive behavioral correlates of dismissing versus preoccupied states of mind and emphasize the differential predictive significance for developmental adaptation of attachment states of mind versus adults' recollections of their early experiences. Implications for adult attachment methodology and theory are discussed.
A longitudinal study of self-efficacy and depressive symptoms in youth of a North American Plains tribe
Authors: Scott Walter D. , Dearing Eric 
Published: April 2012

AbstractWe used a 3-year cross-sequential longitudinal design to examine the relations between self-efficacy judgments in three different domains (academic, social, resisting negative peer influences), cultural identity, theories of intelligence, and depressive symptoms. One hundred ninety-eight American Indian youths participated in the study, who all attended a middle school on a reservation in the northern plains of the United States. We conducted multilevel models to examine both between- and within-person associations as well as to investigate lagged within-youth associations. We found that not only did youths with relatively high self-efficacy have lower depressive symptom levels than other youths, but also increases in efficacy beliefs for academic, social, and for resisting negative peer influences predicted decreases in depressive symptomswithinyouths, even after controlling for previous levels of depressive symptoms as well as both contemporaneous and previous academic achievement. Neither cultural identity nor theories of intelligence moderated the relationship between self-efficacy and depression. As the first evidence that within-youth improvements in self-efficacy has developmental benefits, our findings help fill a long empty niche in the line of studies investigating the impact of efficacy beliefs on depressive symptoms.
Dissociation between affective sharing and emotion understanding in juvenile psychopaths
Authors: Cheng Yawei , Hung An-Yi , Decety Jean 
Published: April 2012

AbstractEmpathy dysfunction is one of the core characteristics of youth with callous–unemotional (CU) traits. How such a dysfunction is associated with abnormal neural processing, however, remains to be determined. This study combined assessment of Hare Psychopathy Checklist Youth Version, pressure pain threshold, and event-related brain potentials elicited by the perception of people in pain in 15 young offenders with low CU traits (LCU), 13 with high CU traits (HCU), and 15 typically developing controls. Compared to the controls, LCU and HCU had higher pain thresholds. Although only the central late positive potential (LPP) was reduced in LCU, both the frontal N120 and central LPP were diminished in HCU. When exposed to situations in which someone was harmed by another, HCU retained the LPP, and this response was significantly correlated with their psychopathic traits and pain thresholds. Both groups had no deficit in sensorimotor resonance as assessed by mu suppression. These results demonstrate that youth with HCU exhibit atypical neural dynamics of pain empathy processing in the early stage of affective arousal, which is coupled with their relative insensitivity to actual pain. Their capacity to understand intentionality, however, was not affected. Such uncoupling between affective arousal and emotion understanding may contribute to instigating aggressive behaviors in juvenile psychopaths.
Verbal mediation of cognition in children with specific language impairment
Authors: Lidstone Jane S. M. , Meins Elizabeth , Fernyhough Charles 
Published: April 2012

AbstractPrivate speech (PS) and inner speech (IS) are thought to be functionally important for children's and adults’ cognition, but they have not been studied systematically in children with specific language impairment (SLI). Participants were 21 children with SLI (7–11 years, expressive or receptive verbal IQ ≤ 75, nonverbal IQ ≥ 84) and 21 age- and nonverbal IQ-matched controls. Participants completed three sets of Tower of London problems: one with no dual task (PS condition), one with articulatory suppression, and one while foot tapping (control condition). Participants also completed a digit span task. There was no group difference in the susceptibility of Tower of London performance to articulatory suppression, but the PS of the SLI group was less internalized than that of the controls on both tasks. The findings suggest that children with SLI experience a significant delay in the development of PS/IS, but that their PS/IS is effective for Tower of London performance in middle childhood. Findings are discussed with reference to the interpretation of the nonlinguistic deficits associated with SLI, and in terms of clinical implications.
Organizational culture and performance in health care for older people: a systematic review
Authors: Hunt Julian , Sanchez Antonio , Tadd Win , O'Mahony Sinead 
Published: April 2012

AbstractIn recent years, there has been a growing understanding that organizational culture is an important characteristic that may influence the effectiveness of health care provision, not least for the growing numbers of older people needing care. The purpose of this paper is to review the literature to uncover any reliable evidence supporting the assertion that organizational culture in health care organizations is related, in terms of activity and outcome, to their performance. Searches identified 20 relevant papers published between 1993 and 2010. A number of studies reviewed claims to have uncovered evidence of a relationship in terms of activity, while others failed to find a clear relationship. None of the studies found much evidence against. In terms of outcomes, none of the studies reviewed found evidence of a relationship between culture and performance. It is clear that any relationship between culture and performance is highly unlikely to be simple: such relationships are more likely to be multiple, complex, contingent and dynamic.
Transapical aortic balloon valvuloplasty in a 6-year-old child with unsuccessful retrograde approach
Authors: Baykan Ali , Argun Mustafa , Sezer Sadettin Sedat , Ceyran Hakan , Narin Nazmi 
Published: April 2012

AbstractSeverely stenotic aortic valves can be treated by percutaneous techniques. However, in rare conditions it could not be possible because of vascular access and valvular passage problems due to small and eccentric orifice. Hybrid approach to balloon aortic valvuloplasty may be considered an alternative to surgery. Here, we present a case of a patient with severe aortic stenosis who has had two failed attempts of percutaneous intervention.
Striatal glutamate and the conversion to psychosis: a prospective 1H-MRS imaging study
Authors: de la Fuente-Sandoval Camilo , León-Ortiz Pablo , Azcárraga Mariana , Favila Rafael , Stephano Sylvana , Graff-Guerrero Ariel 
Published: April 2012

Abstract
Increased glutamate levels in the associative-striatum have been described in subjects at ultra-high risk for psychosis (UHR); nevertheless, it is unclear whether this abnormality predicts the conversion to psychosis. Nineteen subjects at UHR and 26 controls were studied using proton magnetic resonance spectroscopy. Subjects at UHR were clinically followed for 2 yr. Seven UHR subjects (37%) transitioned to a psychotic disorder and the remaining 12 did not exhibit psychotic symptoms at the most recent follow-up. The psychosis transition group had higher glutamate levels compared to both non-transition and control groups (p = 0.02 and p < 0.01, respectively; effect size 1.39). These pilot findings suggest that the conversion to psychosis is associated with increased glutamate levels in the associative-striatum.
Statistics of surface divergence and their relation to air‐water gas transfer velocity
Authors: Asher William E. , Liang Hanzhuang , Zappa Christopher J. , Loewen Mark R. , Mukto Moniz A. , Litchendorf Trina M. , Jessup Andrew T. 
Published: April 2012

Air‐sea gas fluxes are generally defined in terms of the air/water concentration difference of the gas and the gas transfer velocity,kL. Because it is difficult to measure kLin the ocean, it is often parameterized using more easily measured physical properties. Surface divergence theory suggests that infrared (IR) images of the water surface, which contain information concerning the movement of water very near the air‐water interface, might be used to estimatekL. Therefore, a series of experiments testing whether IR imagery could provide a convenient means for estimating the surface divergence applicable to air‐sea exchange were conducted in a synthetic jet array tank embedded in a wind tunnel. Gas transfer velocities were measured as a function of wind stress and mechanically generated turbulence; laser‐induced fluorescence was used to measure the concentration of carbon dioxide in the top 300 μm of the water surface; IR imagery was used to measure the spatial and temporal distribution of the aqueous skin temperature; and particle image velocimetry was used to measure turbulence at a depth of 1 cm below the air‐water interface. It is shown that an estimate of the surface divergence for both wind‐shear driven turbulence and mechanically generated turbulence can be derived from the surface skin temperature. The estimates derived from the IR images are compared to velocity field divergences measured by the PIV and to independent estimates of the divergence made using the laser‐induced fluorescence data. Divergence is shown to scale withkLvalues measured using gaseous tracers as predicted by conceptual models for both wind‐driven and mechanically generated turbulence.
Zonal‐mean global teleconnection from 15 to 110 km derived from SABER and WACCM
Authors: Tan Bo , Chu Xinzhao , Liu Han‐Li , Yamashita Chihoko , Russell James M. 
Published: April 2012

We derive the correlation patterns over the global latitudes and from the stratosphere to lower thermosphere (broadly referred to as teleconnection) using temperature data measured by the Sounding of the Atmosphere using Broadband Emission Radiometry (SABER) from 2002 to 2010, and using 54 years of simulations of temperatures and winds by the Whole Atmosphere Community Climate Model (WACCM). We also analyze the possible mechanisms of teleconnection by investigating the correlations between the temperature and residual circulation. The correlation patterns show that teleconnection exists globally over the equatorial, mid‐ and high‐latitudes, and temperature anomalies correspond well to the anomalies of the residual circulations through adiabatic heating/cooling. A main new finding of this study is that the teleconnection extends well into the lower thermosphere, the thermospheric anomalies are consistent with the corresponding changes of the winter‐to‐summer lower‐thermospheric branch of the residual circulation, and the winter stratosphere perturbations influence the thermosphere globally. Using a reference point chosen in the northern winter stratosphere, we find that the teleconnection structures for time periods with and without Sudden Stratospheric Warmings (SSWs) display similar patterns in SABER, and teleconnection patterns in WACCM are nearly identical for days with major SSWs, minor SSWs and without SSWs. WACCM results show strong inter‐annual and intra‐annual altitude variations of the teleconnection patterns in the southern polar region but stable altitudes of correlation regions in the equatorial and northern latitudes. The altitude variations are likely responsible for the weak correlations poleward of 60°S when multiyear or multimonth data are used.