359 research outputs found

    Comment on "On the TST_S-Anomaly in Betaine Calcium Chloride Dihydrate"

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    Recently, Hlinka and Ishibashi [J. Phys. Soc. Jpn. 67, 495 (1998)] discussed the TST_S-anomaly in betaine calcium chloride dihydrate (BCCD) in a Landau-type approach. We comment on the shortcomings of this approach and discuss the TST_S-anomaly in the framework of a microscopical pseudo spin model based on a realistic description of BCCD in terms of symmetry-adapted local modes.Comment: 2 pages, RevTex, submitted to J. Phys. Soc. Jp

    Геофизические особенности Верхнеюрского разреза месторождений углеводородов Томской области

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    Использованы петрофизические уравнения и данные геофизических исследований скважин месторождений углеводородов Томской области. Выявлены петрофизические типы коллекторов горизонта Ю1 и геофизические особенности пород баженовской свиты в разрезах с разным типом коллекторов

    RF-Based Location Using Interpolation Functions to Reduce Fingerprint Mapping

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    Indoor RF-based localization using fingerprint mapping requires an initial training step, which represents a time consuming process. This location methodology needs a database conformed with RSSI (Radio Signal Strength Indicator) measures from the communication transceivers taken at specific locations within the localization area. But, the real world localization environment is dynamic and it is necessary to rebuild the fingerprint database when some environmental changes are made. This paper explores the use of different interpolation functions to complete the fingerprint mapping needed to achieve the sought accuracy, thereby reducing the effort in the training step. Also, different distributions of test maps and reference points have been evaluated, showing the validity of this proposal and necessary trade-offs. Results reported show that the same or similar localization accuracy can be achieved even when only 50% of the initial fingerprint reference points are taken

    Tracing developmental trajectories of oppositional defiant behaviors in preschool children

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    Objective: Previous studies on developmental trajectories have used ad hoc definitions of oppositional defiant behaviors (ODB), which makes it difficult to compare results. This article defines developmental trajectories of ODB from ages 3-5 based on five different standard measurements derived from three separate instruments. -- Method: A sample of 622 three-year-old preschoolers, followed up at ages 4, 5, and 6, was assessed with the five measures of oppositionality answered by parents and teachers. Growth-Mixture-Modeling (GMM) estimated separate developmental trajectories for each ODB measure for ages 3 to 5. -- Results: The number of classes-trajectories obtained in each GMM depended on the ODB measure, but two clear patterns emerged: four trajectories (persistent low, decreasers, increasers/high increasers, persistent moderate/persistent high) or three trajectories (persistent low, decreasers, increasers/high increasers). Persistent high trajectories accounted for 4.4%-9.5% of the children. The trajectories emerging from the different ODB measures at ages 3 to 5 discriminated disruptive disorders, comorbidity, use of services, and impairment at age 6, and globally showed a similar pattern, summarizing longitudinal information on oppositionality in preschool children in a similar way. -- Conclusions: Trajectories resulting from standard scales of the questionnaires have predictive validity for identifying relevant clinical outcomes, but are measure-specific. The results contribute to knowledge about the development of ODB in preschool children

    El análisis de curvas ROC en estudios epidemiológicos de psicopatología infantil : aplicación al cuestionario CBCL

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    Mediante el análisis de curvas ROC se estudia la precisión diagnóstica del Child Behavior Checklist(CBCL) y se obtiene el punto de corte óptimo en una muestra de 196 niños y adolescentes procedentes de centros de consulta pediátrica y psiquiátrica. Se utilizaron como patrones de referencia el grupo de procedencia, el diagnóstico según la entrevista diagnóstica estructurada DICA-R y el diagnóstico del clínico. Los resultados indican que la capacidad del CBCL para discriminar entre sujetos con y sin psicopatología depende en gran medida del patrón de referencia utilizado, siendo mejor el rendimiento de la prueba cuando se contrasta con el grupo de procedencia o con la entrevista diagnóstica estructurada. Como prueba de cribado, el punto de corte de la puntuación total del CBCL se situaba entre los valores 50 y 54 para optimizar la sensibilidad

    The Brief Problem Monitor-Parent Form (BPM-P), a short version of the child behavior checklist : psychometric properties in Spanish 6- to 8-year-old children

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    We provide the first validation data on the Spanish version of the Brief Problem Monitor-Parent form (BPM-P), a recently developed abbreviated version of the 120-item Child Behavior Checklist for Ages 6 to 18 (CBCL/6-18) in young schoolchildren. Parents of a community sample of 521 children aged 6-8 answered the CBCL/6-18 yearly, and the 19 BPM-P items were examined; parents also provided different measures of psychopathology. Confirmatory factor analysis of the expected 3-factor model (attention, externalizing, and internalizing) showed adequate fit (root mean square error of approximation, RMSEA ≤ .057), and measurement invariance across sex and age was observed. Internal consistency for the derived scores was satisfactory (ω ≥ .83). Concurrent validity with the equivalent scale scores of the original full CBCL/6-18 (r ≥ .84) and convergent validity with parents' ratings of the Strengths and Difficulties Questionnaire scores (r ≥ .52) were good. BPM-P scores at age 7 showed good predictive accuracy for discriminating the use of mental health services (OR ≥ 1.12), functional impairment (B ≤ −1.25), and the presence of the corresponding disorders diagnosed with an independent clinical interview, both cross-sectionally at age 7 and longitudinally at age 8 (OR ≥ 1.24). The BPM-P provides reliable and valid scores as a very brief follow-up and screening tool for assessing behavioral and emotional problems in young schoolchildre

    Convergent and discriminant validity of the structured diagnostic interview for children and adolescents (DICA-R)

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    This paper examines the convergent validity of the Diagnostic Interview for Children and Adolescents - Revised (DICA-R), using the Child Behavior Checklist of T. M. Achenbach as a criterion. The ability of the instrument to detect subjects with psychopathology in the general population is also studied. The study was made through 196 interviews with psychiatric patients and 130 interviews with subjects from schools and Paediatric Services. The results obtained with the DICA-R are comparable with those obtained from other instruments that are widely accepted and considered as valid. The interview is a valid instrument for use in epidemiological research, as it can distinguish correctly between controls and casesEl artículo examina la validez convergente de la Entrevista Diagnóstica Estructurada para Niños y Adolescentes (DICA-R), utilizando como criterio la CBCL de T. M. Achenbach. Asimismo se describe la capacidad del instrumento para detectar sujetos con psicopatología en la población general. El estudio se llevó a cabo con un total de 196 entrevistas realizadas con pacientes psiquiátricos externos y 130 entrevistas realizadas con sujetos reclutados en escuelas y Servicios de Pediatría. Los resultados obtenidos con lo DICA-R convergen con los que se obtienen a partir de otros instrumentos ampliamente utilizados y considerados como válidos. La entrevista es asimismo válida para el estudio epidemiológico ya que diferencia adecuadamente entre grupos controles y psiquiátrico

    Fiabilidad test-retest de la adaptación española de la Diagnostic Interview for Children and Adolescents (DICA-R)

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    El artículo examina la fiabilidad test-retest de la adaptación española de la Diagnostic Interview for Children and adolescents-Revised (DICA-R) en una muestra de 110 niños y adolescentes pacientes psiquiátricos externos. Niños y padres fueron entrevistados con la DICA-R en dos ocasiones separadas por un intervalo medio de 11 días. Los resultados del estudio indican que hay estabilidad en la evaluación de los trastornos con la DICA-R, como lo demuestra la ausencia de diferencias significativas entre el test y el retest y el rango de la mayoría de los valores kappa que oscilaron entre buenos y excelentes. Los más estables informando sobre los trastornos fueron los padres y los menos fiables fueron los adolescentes. Los trastornos mostraron cierta atenuación en el retest, aunque las diferencias no fueron significativas. La fiabilidad de los respondientes individuales dependió del tipo de trastorno y de la edad. La entrevista fue más fiable en las categorías más generales que en los trastornos específicosThe paper examines the test-retest reliability of the Diagnostic Interview for Children and Adolescents-Revised (DICA-R). 110 children and adolescent outpatients and their parents were interviewed using the DICA-R on two occasions, separated by a mean interval of 11 days. The results of our study indicate that there is stability in the assessment of the disorders with DICA-R, as shown by the absence of significant differences between test and retest and the majority of kappa values which ranged from good to excellent. The parents were the most stable in reporting disorders and adolescents were the least. Test-retest reliability of DICA-R in the sample was very good. The disorders appeared attenuated in the retest. The reliability of respondent assessment depended on the type of disorder and on age. The interview was more reliable in higher rank of major categories than in specific disorder

    Oppositional Defiant Disorder dimensions and aggression : The moderating role of hostile bias and sex

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    Background: Hostile Attributional Bias (HAB) has been related to conduct problems. The common and unique associations between the different dimensions of Oppositional Defiant Disorder (ODD) symptoms, specific components of HAB, sex and types of aggression (overt and relational) in a community sample of 491 7-year-old children are investigated. Method: Teachers rated the children's ODD symptoms and aggression and the children self-reported about HAB. Multiple linear regressions showed that ODD dimensions were directly associated with both types of aggression. Results: Boys were more overtly aggressive and girls more relational. Emotional distress was directly associated with relational aggression. The relational component of HAB uniquely moderated the influence of the oppositional dimension on relational aggressive behaviour. Conclusions: The assessment of social cognition variables is necessary to approach specific interventions in the presence of ODD symptoms, as this may help to identify a subset of children prone to aggressive reactionsAntecedentes: el sesgo hostil atribucional (SHA) se ha relacionado con los problemas de conducta. Método: este trabajo investiga asociaciones comunes y específicas entre las diferentes dimensiones del Trastorno Negativista Desafiante (TND), el sexo y diferentes tipos de agresividad (abierta y relacional) en una muestra comunitaria de 491 participantes de 7 años de edad. Los profesores informaron sobre los síntomas de TND y la agresividad de los participantes y estos autoinformaron sobre su SHA. Regresiones lineales múltiples mostraron que todas las dimensiones de TND estaban directamente asociadas con ambos tipos de agresividad. Resultados: los chicos mostraron más agresividad abierta y las chicas más agresividad relacional. El malestar emocional se asoció directamente con la agresividad relacional. El componente relacional del SHA moderó de manera específica la influencia de la dimensión oposicionista sobre la conducta de agresividad relacional. Conclusiones: la evaluación de variables de cognición social en presencia de síntomas de TND es necesaria, ya que podría ayudar a identificar un subgrupo de niños proclive a las reacciones agresivas y contribuir al diseño de intervenciones específica

    Maternal psychological distress in primary care and association with child behavioural outcomes at age three

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    Observational studies indicate children whose mothers have poor mental health are at increased risk of socio-emotional behavioural difficulties, but it is unknown whether these outcomes vary by the mothers’ mental health recognition and treatment status. To examine this question, we analysed linked longitudinal primary care and research data from 1078 women enrolled in the Born in Bradford cohort. A latent class analysis of treatment status and self-reported distress broadly categorised women as (a) not having a common mental disorder (CMD) that persisted through pregnancy and the first 2 years after delivery (N = 756, 70.1 %), (b) treated for CMD (N = 67, 6.2 %), or (c) untreated (N = 255, 23.7 %). Compared to children of mothers without CMD, 3-year-old children with mothers classified as having untreated CMD had higher standardised factor scores on the Strengths and Difficulties Questionnaire (d = 0.32), as did children with mothers classified as having treated CMD (d = 0.27). Results were only slightly attenuated in adjusted analyses. Children of mothers with CMD may be at risk for socio-emotional and behavioural difficulties. The development of effective treatments for CMD needs to be balanced by greater attempts to identify and treat women. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (doi:10.1007/s00787-015-0777-2) contains supplementary material, which is available to authorized users
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