汽轮机最大负荷的优化

依据国家机械(汽轮机)的设计规定,对汽轮机设计(校核)及变工况运行的安全可靠性进行了分析,对公司以前的运行实践等方面进行了详细论证,阐述了汽轮发电机组最大负荷优化的科学性、经济性。     

Deciphering the Genetic Basis of Root and Biomass Traits in Rapeseed (Brassica napus L.) through the Integration of GWAS and RNA-Seq under Nitrogen Stress

An excellent root system is responsible for crops with high nitrogen-use efficiency (NUE). The current study evaluated the natural variations in 13 root- and biomass-related traits under a low nitrogen (LN) treatment in a rapeseed association panel. The studied traits exhibited significant phenotypic differences with heritabilities ranging from 0.53 to 0.66, and most of the traits showed significant correlations with each other. The genome-wide association study (GWAS) found 51 significant and 30 suggestive trait–SNP associations that integrated into 14 valid quantitative trait loci (QTL) clusters and explained 5.7–21.2% phenotypic variance. In addition, RNA sequencing was performed at two time points to examine the differential expression of genes (DEGs) between high and low NUE lines. In total, 245, 540, and 399 DEGs were identified as LN stress-specific, high nitrogen (HN) condition-specific, and HNLN common DEGs, respectively. An integrated analysis of GWAS, weighted gene co-expression network, and DEGs revealed 16 genes involved in rapeseed root development under LN stress. Previous studies have reported that the homologs of seven out of sixteen potential genes control root growth and NUE. These findings revealed the genetic basis underlying nitrogen stress and provided worthwhile SNPs/genes information for the genetic improvement of NUE in rapeseed.     

The courage and strategies of hardiness as helpful in growing despite major, disruptive stresses.

Comments on an article (see record 2007-14606-001) by King and Hicks which looked at disruptions of expectations and goals as potentially useful developmental pressures. They emphasized imposed, dramatic stresses (e.g., an unexpected divorce or having one's child born with Down syndrome), but they also meant to include more ordinary, developmental stresses (e.g., leaving home to go to college or not getting the job one wanted). Maddi could not agree more with the article's emphasis on the importance of having full awareness of the losses and using that awareness in the process of learning and moving developmentally forward, and how this emphasis requires a redefinition of happiness as more mature than a mere expression of easy comfort and security. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Trait configurations in self-managed teams: A conceptual examination of the use of seeding for maximizing and minimizing trait variance in teams.

In this article, the authors argue that there is no one best way to make placement decisions on self-managed teams. Drawing from theories of supplementary and complementary fit, they develop a conceptual model that suggests that (a) maximization principles should be applied to extroversion variance (i.e., complementary fit), (b) minimization principles should be applied to conscientiousness variance (i.e., supplementary fit), and (c) extroversion variance and conscientiousness variance interact to influence team performance. They also argue that previous research has underestimated the effect of extroversion and conscientiousness variance on performance because of suboptimal design. The authors, therefore, present an alternative method for making team placement decisions (i.e., seeding) that can be used to maximize or minimize variance in teams. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Personality and aggressive behavior under provoking and neutral conditions: A meta-analytic review.

The authors conducted a comprehensive review to understand the relation between personality and aggressive behavior, under provoking and nonprovoking conditions. The qualitative review revealed that some personality variables influenced aggressive behavior under both neutral and provocation conditions, whereas others influenced aggressive behavior only under provocation. Studies that assessed personality variables and that directly measured aggressive behavior were included in the quantitative review. Analyses revealed that trait aggressiveness and trait irritability influenced aggressive behavior under both provoking and neutral conditions but that other personality variables (e.g., trait anger, Type A personality, dissipation-rumination) influenced aggressive behavior only under provoking conditions. The authors discuss possible relations between these patterns of aggressive behavior and the personality dimensions of Agreeableness and Neuroticism and consider implications for theories of aggression. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The relations of motivational traits with workplace deviance.

The authors developed and tested new theoretical relations between approach and avoidance motivational traits and deviant work behaviors. Approach motivation was divided into 3 traits: personal mastery (i.e., desire to achieve), competitive excellence (i.e., desire to perform better than others), and behavioral activation system (BAS) sensitivity (i.e., responsiveness to rewards). Avoidance motivation, which reflects one's sensitivity to negative stimuli and the desire to escape such stimuli, was conceptualized as a unitary construct. Using structural equation modeling, the authors examined the relations of these 4 motivational traits with interpersonal and organizational deviance in a sample of primarily part-time employees. For the approach motivation traits, results showed that personal mastery was negatively related to interpersonal and organizational deviance, BAS sensitivity was positively related to interpersonal and organizational deviance, and competitive excellence was unrelated to both types of workplace deviance. Finally, avoidance motivation was positively related to organizational deviance and interacted with organizational constraints to predict interpersonal deviance. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

Review of Personality theory and research: An international perspective.

Reviews the book, Personality theory and research: An international perspective by Gordon L. Flett (2007). On the whole, this is an excellent textbook. It provides a balance between discussion of theory and research, both contemporary and historical, from an international and cross-cultural perspective. It makes a special effort to highlight research contributions made by researchers in Canada and countries other than the United States. The book also emphasises the science underlying personality psychology and acknowledges the practical aspects of personality theory and research. This textbook contains 14 chapters, which are well-written, focus on interesting empirical and real-world examples, and include sections that should facilitate student comprehension. This textbook provides a good introduction to personality theory and research. It makes a convincing argument that personality matters. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

Cortical atrophy and personality in multiple sclerosis.

Although the cognitive disorder of multiple sclerosis (MS) is well characterized, little is known about personality changes that may occur in this disease. There are reliable personality tests available for research in neurological disease, based on the well-known Five Factor Model. Preliminary research suggests that cognitively impaired MS patients exhibit elevation in Neuroticism, and diminution in Extraversion, Agreeableness, and Conscientiousness, as do patients with Alzheimer's disease. We predicted that these characteristics would be associated with lower neocortical volume. We studied 44 patients using brain MRI and the NEO Five-Factor Inventory. Regression models controlling for T2 lesion volume, depression, and cognitive dysfunction revealed significant correlation between cortical atrophy and reduction in Extraversion and Conscientiousness. Discrepancies between patient- and informant-reports were found, and overreporting of high Openness and Conscientiousness among patients was associated with lower neocortical volume. A final regression model accounting for depression, cognitive function, and personality accounted for 38% of the variance in neocortical volume. These findings suggest that cortical atrophy in MS is associated with adverse impact on personality, although longitudinal research is needed to test this hypothesis. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The structure of personality disorders in individuals with posttraumatic stress disorder.

Research on the structure of personality disorders (PDs) has relied primarily on exploratory analyses to evaluate trait-based models of the factors underlying the covariation of these disorders. This study used confirmatory factor analysis to evaluate whether a model that included both PD traits and a general personality dysfunction factor would account for the comorbidity of the PDs better than a trait-only model. It also examined if the internalizing/externalizing model of psychopathology, developed previously through research on the structure of Axis I disorders, might similarly account for the covariation of the Axis II disorders in a sample of 245 veterans and nonveterans with posttraumatic stress disorder. Results indicated that the best fitting model was a modified bifactor structure composed of nine lower-order common factors. These factors indexed pathology ranging from aggression to dependency, with the correlations among them accounted for by higher-order Internalizing and Externalizing factors. Further, a general factor, reflecting a construct that we termed boundary disturbance, accounted for additional variance and covariance across nearly all the indicators. The Internalizing, Externalizing, and Boundary Disturbance factors evidenced differential associations with trauma-related covariates. These findings suggest continuity in the underlying structure of psychopathology across DSM–IV Axes I and II and provide empirical evidence of a pervasive, core disturbance in the boundary between self and other across the PDs. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

Etiologic connections among substance dependence, antisocial behavior and personality: Modeling the externalizing spectrum.

A hierarchical biometric model is presented of the origins of comorbidity among substance dependence, antisocial behavior, and a disinhibited personality style. The model posits a spectrum of personality and psychopathology, united by an externalizing factor linked to each phenotype within the spectrum, as well as specific factors that account for distinctions among phenotypes within the spectrum. This model fit self-report and mother-report data from 1,048 male and female 17-year-old twins. The variance of the externalizing factor was mostly genetic, but both genetic and environmental factors accounted for distinctions among phenotypes within the spectrum. These results reconcile evidence for general and specific causal factors within the externalizing spectrum and offer the externalizing factor as a novel target for future research. (PsycINFO Database Record (c) 2010 APA, all rights reserved)