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  • 2010-2014  (2)
  • 1990-1994  (2)
  • 1980-1984
  • 2012  (2)
  • 1994  (2)
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  • 2010-2014  (2)
  • 1990-1994  (2)
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  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    The @journal of child psychology and psychiatry 35 (1994), S. 0 
    ISSN: 1469-7610
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine , Psychology
    Notes: Abstract The predictive power of early visual attention in terms of later cognitive functioning was compared to standard developmental test scores and further early predictors of later development. In a longitudinal study of 226 infants at risk visual attention in a habituation-dishabituation paradigm was assessed at 3 months and cognitive development was measured at 3, 24 and 54 months. The results indicated that response decrement and response recovery measures are related lo cognitive outcome in later childhood, but failed to support their superiority over standard developmental test scores or early biological and psychosocial predictors of later IQ. Methodological shortcomings of previous studies and theoretical weaknesses of the habituation concept were discussed as a possible explanation.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    European child & adolescent psychiatry 3 (1994), S. 267-276 
    ISSN: 1435-165X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé La psychose schizophrène atteint les hommes en moyenne 4 à 5 ans plus tot que les femmes bien que le risque de contracter la maladie durant leur vie soit le meme pour les deux sexes. Comme cette observation n'a pas été confirmée ni pour l'enfance ni pour l'adolescence, ce travail a pour objet d'examiner cette question en comparant les données de la litérature et les résultats d'une étude réalisée à Mannheim. Parmi les 28 publications revisées, il y avait huit études qui ont utilisé des critères diagnostiques standardisés en se limitant à l'age de 11 à 18 ans. Ni l'analyse de ces huit publications ni les résultats de l'étude de Mannheim ne mettent en evidence l'existence d'une affection précoce des adolescents schizophrènes masculins. Differentes raisons, qui peuvent expliquer ceci, sont envisagées.
    Abstract: Zusammenfassung Bei gleichem Lebenszeitrisiko erkranken erwachsene Männer durchschnittlich 4–5 Jahre früher als Frauen an einer schizophrenen Psychose. Ob dieser Befund auch für das Kindes- und Jugendalter zutrifft ist unbekannt und soll in der vorliegenden Untersuchung mittels Daten aus der Literatur sowie einer eigenen Studie (n=118) überprüft werden. Von insgesamt 28 Studien verwendeten nur acht operationalisierte Diagnosekriterien und beschränkten sich auf den Altersbereich 11–18 Jahre. Weder aus den Daten dieser acht Studien noch aus der Mannheim-Studie ergaben sich Hinweise auf ein früheres Erkranken der männlichen schizophrenen Jugendlichen. Mögliche Gründe werden diskutiert.
    Notes: Abstract Schizophrenia in male adults starts on average 4–5 years earlier than in females. The lifetime risk for both sexes is equal. It is still unknown, whether this observation is also valid for children and adolescents. This question was examined in the present study by means of data from the literature and a study of our own (n=118). From a total of 28 studies, only eight used standardized diagnostic criteria and confined the age range from 11 to 18 years. Neither the data of these eight studies nor those of the Mannheim-Study indicate an earlier onset of schizophrenia in male adolescents. Possible reasons are discussed.
    Type of Medium: Electronic Resource
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  • 3
    Publication Date: 2021-01-22
    Description: Die mittel- und längerfristige Planung für den Gastransport hat sich durch Änderungen in den regulatorischen Rahmenbedingungen stark verkompliziert. Kernpunkt ist die Trennung von Gashandel und -transport. Dieser Artikel diskutiert die hieraus resultierenden mathematischen Planungsprobleme, welche als Validierung von Nominierungen und Buchungen, Bestimmung der technischen Kapazität und Topologieplanung bezeichnet werden. Diese mathematischen Optimierungsprobleme werden vorgestellt und Lösungsansätze skizziert.
    Language: German
    Type: reportzib , doc-type:preprint
    Format: application/pdf
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  • 4
    Publication Date: 2021-03-16
    Description: In this article we investigate methods to solve a fundamental task in gas transportation, namely the validation of nomination problem: Given a gas transmission network consisting of passive pipelines and active, controllable elements and given an amount of gas at every entry and exit point of the network, find operational settings for all active elements such that there exists a network state meeting all physical, technical, and legal constraints. We describe a two-stage approach to solve the resulting complex and numerically difficult mixed-integer non-convex nonlinear feasibility problem. The first phase consists of four distinct algorithms facilitating mixed-integer linear, mixed-integer nonlinear, reduced nonlinear, and complementarity constrained methods to compute possible settings for the discrete decisions. The second phase employs a precise continuous nonlinear programming model of the gas network. Using this setup, we are able to compute high quality solutions to real-world industrial instances whose size is significantly larger than networks that have appeared in the literature previously.
    Language: English
    Type: reportzib , doc-type:preprint
    Format: application/pdf
    Format: application/pdf
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