Supportive and Unsupportive Responses From Parents as Moderators of the Relationship Between Stressful Events and Negative Outcomes in Adolescents

The objective of this study was to investigate the relationship between stressful events in adolescents and negative outcomes of substance use, depressive symptoms, and anxiety symptoms. Parental support and unsupportive parental responses were examined as moderators of this relationship. The research design was cross-sectional, and self-report data were collected from 100 adolescents in the 8th and 9th grades. As hypothesized, significant positive associations were found between perceived stressors and each of the three negative outcomes, as well as between unsupportive parental responses and the outcomes. Also consistent with hypotheses, and previous literature, was the finding of a significant inverse association between parental support and negative outcomes. Multiple linear regression analyses supported one of the moderator hypotheses, showing that parental support buffered the association between stressful events and adolescent substance use, such that adolescents with high stress and high perceived parental support engaged in significantly less substance use than adolescents with high stress and low perceived parental support. However, no significant evidence was found for parental support as a buffer of the associations between adolescent stressful events and either depressive symptoms or anxiety symptoms. Contrary to hypotheses, no significant moderation effects of unsupportive parental responses were found for the associations between stressful events and adolescent substance use, depressive symptoms, or anxiety symptoms. A major contribution of the present study is the evidence for unsupportive parental responses as a significant predictor of negative outcomes in adolescence. The present findings further suggest that unsupportive parental responses are a distinct construct from parental support, rather than simply opposite ends of the same continuum

Ontology-Based Resource Discovery in Pervasive Collaborative Environments

International audienceMost of the working environments offer multiple hardware and software that could be shared among the members of staff. However, it could be particularly difficult to take advantages of all these resources without a proper software support capable of discovering the ones that fulfill both a user's requirements and each resource owner's sharing preferences. To try to overcome this problem, several service discovery protocols have been developed, aiming to promote the use of network resources and to reduce configuration tasks. Unfortunately, these protocols are mainly focused on finding resources based just on their type or some minimal features, lacking information about: user preferences, restrictions and contextual variables. To outstrip this deficiency, we propose to exploit the power of semantic description, by creating a knowledge base integrated by a set of ontologies generically designed to be adopted by any type of organization. To validate this proposal, we have customized the ontologies for our case of study, which is a research center

Properties of Hardboards Made From Acetylated Aspen and Southern Pine

The effects of fiber acetylation, resin content, and wax content on mechanical and physical properties of dry-process hardboard made from aspen and southern pine were investigated.Test results indicate that the modulus of rupture (MOR) and modulus of elasticity (MOE) of the hardboard specimens were decreased due to the fiber acetylation. Tensile stress parallel to face and internal bond (IB) were generally higher for untreated boards than for acetylated boards. Water absorption (WA) and thickness swelling (TH.S) were both reduced markedly by acetylation. In general, increasing resin content from 3% to 7% brought increases in MOR, MOE, tensile stress, and IB and improved WA and TH.S. Addition of the 0.5% wax content usually caused reductions in these mechanical properties, but improved WA and TH.S in some cases. Linear expansion (LE) in the dimensional stability test (from 30% to 90% RH) was significantly reduced by acetylation and influenced by wood species. Neither resin nor wax contents significantly affected the LE value of hardboard specimens in this study

Schlussbericht, Erfolgskontrollbericht und Veroeffentlichungsnachweis zur Photovoltaik-Anlage im Schulzentrum Meckenheim-Merl

At the school center of Meckenheim-Merl a grid-connected photovoltaic power plant has been installed for demonstration purposes. The solar modules (overall 60 m"2) are mounted on two steel support construction of the flat roof of the grammar school. The expected energy gain of approximately 5.300 kWh yearly will be used in the school itself. Within the framwork of the research project a measuring and evaluation programme has been carried out, whereby the most important weather data and electric parameters of the plant are automatically measured, stored and evaluated every 5 seconds. (BWI)Im Schulzentrum Meckenheim-Merl wurde zu Demonstrationszwecken eine netzgekoppelte Photovoltaik-Anlage erstellt. Dabei sind 120 Solarmodule von ca. 60 m"2 auf zwei Stahltragekonstruktionen montiert, die das Flachdach des Gymnasiums ueberspannen. Der erwartete Energiegewinn von etwa 5.300 kWh jaehrlich wird dabei fast vollstaendig im Schulzentrum selbst genutzt. Im Rahmen des Forschungsprojektes wird ein Mess- und Auswertungsprogramm durchgefuehrt, wobei alle wichtigen Wetterdaten und die elektrischen Groessen der Photovoltaik-Anlage im Abstand von 5 Sekunden automatisch gemessen, gespeichert und vom Computer ausgewertet werden. (BWI)Available from TIB Hannover: F94B0163+a / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEBundesministerium fuer Forschung und Technologie (BMFT), Bonn (Germany)DEGerman

Stroke-like encephalopathy in an infant with 3-hydroxy-3-methylglutaryl-coenzyme A lyase deficiency

A 2.5-year-old boy presented with acute metabolic decompensation in whom 3-hydroxy-3-methyl-glutaryl-coenzyme A (HMG-CoA) lyase deficiency was diagnosed. Four days after metabolic decompensation, a stroke-like encephalopathy with tonic clonic convulsion of the left arm and leg and coma developed. Brain oedema and subsequent demarcation and atrophy were observed mainly within the supply areas of the right anterior and middle cerebral artery and to a lesser extent in various sites within the right hemisphere. Residual neurological deficits included spastic paresis of the left arm and leg. and left supranuclear facial palsy and aphasia, indicating bilateral diffuse brain affection. CONCLUSION: In the presented patient with HMG-CoA lyase deficiency, stroke-like encephalopathy occurred days after metabolic decompensation indicating ongoing (intracerebral) metabolic derangement. Monitoring of the intracerebral accumulation of toxic metabolites by magnetic resonance spectroscopy and of cerebral haemodynamics might be useful for a better understanding of the pathogenetic mechanisms of stroke-like encephalopathy and to identify patients at ris