Parent–child interaction: The influence of maternal employment.

Data were collected from 40 mother–father–preschool child triads, including 20 employed and 20 nonemployed mothers. Information from the Parent-Child Activity Questionnaire, in-home unstructured observations, play task observations, and observer ratings indicated that maternal employment did not significantly alter the role specialization observed in single earner families. Mothers exhibited more caretaking, quiet play, positive affect, and speaking, whereas fathers exhibited more active play. Parents from single earner families demonstrated more speaking and quiet play than parents from dual earner families. Sons received more attention in families with nonemployed mothers, whereas daughters received more attention in families with employed mothers. Parents from families with employed mothers had more favorable attitudes toward dual roles for women. There was increased negative affect in families experiencing incongruence between parents' attitudes and the mother's employment status. (24 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Self-image and stereotypes of femininity: Their relationship to women's role conflicts and coping.

Explored self-image, the female image of a feminine woman, and the female perception of the man's image of a feminine woman as these are related to role conflicts, coping behavior, satisfaction, and happiness in a sample of 229 college-educated women. The woman's perception of the male's stereotype of femininity was the best predictor of various types of conflicts experienced. The woman's style of coping with conflict was a function of her self-image. Self-image was also associated with satisfaction and happiness. The effect of male stereotypes on women's conflicts is discussed in terms of current social definitions of women's roles. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Improving color CAD Systems for Users: Some Suggestions from Human Factors Studies

Human factors studies reveal that users' perceptions of a CAD system may be quite different from the developers' concepts.     

Preparation,stabilite et etude cristallographique preliminaire du compose Bi2Sn2O7

Our crystallochemistry investigation of the Bi₂O₃ - SnO₂ binary in the range of compositions between 60 and 75 SnO₂ moles percent, brings new evidence of the compound Bi₂Sn₂O₇. It has a tetragonal structure ($\text{a}\text{= 21.31}\text{A}\text{?}$, $\text{c}\text{= 21.53}\text{A}\text{?}$), related to the pyrochlore structure.From this study arises a new problem about the influence of Bi3+ ion on the doubling of the crystalline parameters.     

Examining the relationship between work-family spillover and sleep quality.

The present study examined the relationship between work-family spillover, job characteristics, and sleep quality in a sample of health care workers (N = 168) recruited from 3 Canadian hospitals. A multiple regression analysis revealed that positive family-to-work spillover is associated with better sleep quality, after controlling for age, physical health, depressive symptomatology, work situation, and number of children. These findings are discussed within a theoretical framework drawing on the concepts of effort and recovery. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The Amyotrophic Lateral Sclerosis M114T PFN1 Mutation Deregulates Alternative Autophagy Pathways and Mitochondrial Homeostasis

Mutations in profilin 1 (PFN1) have been identified in rare familial cases of Amyotrophic Lateral Sclerosis (ALS). PFN1 is involved in multiple pathways that could intervene in ALS pathology. However, the specific pathogenic role of PFN1 mutations in ALS is still not fully understood. We hypothesized that PFN1 could play a role in regulating autophagy pathways and that PFN1 mutations could disrupt this function. We used patient cells (lymphoblasts) or tissue (post-mortem) carrying PFN1 mutations (M114T and E117G), and designed experimental models expressing wild-type or mutant PFN1 (cell lines and novel PFN1 mice established by lentiviral transgenesis) to study the effects of PFN1 mutations on autophagic pathway markers. We observed no accumulation of PFN1 in the spinal cord of one E117G mutation carrier. Moreover, in patient lymphoblasts and transfected cell lines, the M114T mutant PFN1 protein was unstable and deregulated the RAB9-mediated alternative autophagy pathway involved in the clearance of damaged mitochondria. In vivo, motor neurons expressing M114T mutant PFN1 showed mitochondrial abnormalities. Our results demonstrate that the M114T PFN1 mutation is more deleterious than the E117G variant in patient cells and experimental models and suggest a role for the RAB9-dependent autophagic pathway in ALS.     

Self‐aware management of IP networks with QoS guarantees

Self‐aware management allows the network to react and to adapt to changes of situation. In this paper an architecture is described for self‐aware management of IP networks offering QoS guarantees. This architecture uses policy‐based management and multi‐agent systems. The originality of the present approach lies in the intention to give a real autonomy to the components intervening in the chain of services in terms of internal decisions and configuration. Our solution allows the self‐configuration, self‐provisioning and self‐monitoring of service as well as the proactive service level agreement management. Copyright © 2004 John Wiley & Sons, Ltd.     

Mode de formation et stabilite des phases AnBnO3n+2 mises en evidence dans les systemes La2Ti2O7 - CaTiO3, Nd2Ti2O7 - CaTiO3 et Ca2Nb2O7 - CaTiO3

The stability of the A_nB_nO_3n+2 phases, whose structure is derived from the perovskite structure, was investigated through X-Ray diffraction, in the following systems: La₂Ti₂O₇ - CaTiO₃, Nd₂Ti₂O₇ - CaTiO₃ and Ca₂Nb₂O₇ - CaTiO₃. Some of the phases quenched from the liquid are metastable and include vacancies overA and B sites. A model of formation of these phases is proposed.     

Performance of liquid‐crystal displays for fire‐service thermal‐imaging cameras

Abstract— As use of handheld thermal‐imaging cameras (TICs) becomes more prevalent in the first‐responder community, it is important that standard test metrics be available to characterize imaging performance. A key performance consideration is the quality of the image presented on the TIC display. This paper focuses on TICs that use liquid‐crystal displays to render an image for the user. Current research on TIC performance for first‐responder applications makes use of trained observers and/or composite‐video‐output‐signal measurements. Trained observer tests are subjective and composite video output tests do not evaluate the performance of the complete imaging system. A non‐destructive objective method was developed that tests the performance of the entire thermal‐imaging system, from the infrared sensor to the display. A thermal target was used to correlate the measured thermal imager composite video output signal with the luminance of the display. A well‐characterized charge‐coupled‐device (CCD) camera and digital recording device were used to measure the display luminance. An electro‐optical transfer function was determined that directly relates the composite video output signal to the luminance of the display, providing a realistic characterization of system performance.     

Inter‐ and Intramolecular Hydroamination of Unactivated Alkenes Catalysed by a Combination of Copper and Silver Salts: The Unveiling of a Brønstedt Acid Catalysis

The combined use of a copper halide, a silver salt and a phosphane ligand was applied for the catalysis of inter‐ and intramolecular hydroamination of alkenes. The reactions of unactivated olefins with nitrogen substrates were investigated. Mechanistic investigations demonstrated that the catalytic system generated a Brønsted acid which appeared to be the prominent catalytic species.