A Spatial-temporal Model for Temperature with Seasonal Variance

We propose a spatial-temporal stochastic model for daily average surface temperature data. First, we build a model for a single spatial location, independently on the spatial information. The model includes trend, seasonality, and mean reversion, together with a seasonally dependent variance of the residuals. The spatial dependency is modelled by a Gaussian random field. Empirical fitting to data collected in 16 measurement stations in Lithuania over more than 40 years shows that our model captures the seasonality in the autocorrelation of the squared residuals, a property of temperature data already observed by other authors. We demonstrate through examples that our spatial-temporal model is applicable for prediction and classification.     

Proportional reversed hazard rate model and its applications

The purpose of this paper is to study the structure and properties of the proportional reversed hazard rate model (PRHRM) in contrast to the celebrated proportional hazard model (PHM). The monotonicity of the hazard rate and the reversed hazard rate of the model is investigated. Some criteria of aging are presented and the inheritance of the aging notions (of the base distribution) by the PRHRM is studied. Characterizations of the model involving Fisher information are presented and the statistical inference of the parameters is discussed. Finally, it is shown that several members of the proportional reversed hazard rate class have been found to be useful and flexible in real data analysis.     

Diversity,semi-communication and cross-country trust: A quantitative analysis

Existing trust research has often failed to account for the possibility that communication impairments brought on by language barriers could explain low levels of trust both within and between countries. To test whether this is the case, I construct an ‘index of communication potential’ for a sample of 359 cross-country dyads composed of 21 European countries. Although similar indexes have been used previously, this is the first one to include instances of ‘semi-communication’ between related languages when calculating communication potential. Multiple regression analysis indicated not only that greater communication potential was associated with greater cross-country trust, but that this relationship was monotonic: semi-communication was also associated with greater trust, but the link was weaker than for actually sharing a language.     

Modelling columnarity of pyramidal cells in the human cerebral cortex

For modelling the location of pyramidal cells in the human cerebral cortex, we suggest a hierarchical point process in that exhibits anisotropy in the form of cylinders extending along the z-axis. The model consists first of a generalised shot noise Cox process for the xy-coordinates, providing cylindrical clusters, and next of a Markov random field model for the z-coordinates conditioned on the xy-coordinates, providing either repulsion, aggregation or both within specified areas of interaction. Several cases of these hierarchical point processes are fitted to two pyramidal cell data sets, and of these a final model allowing for both repulsion and attraction between the points seem adequate. We discuss how the final model relates to the so-called minicolumn hypothesis in neuroscience.     

Victimization Within Mutually Antipathetic Peer Relationships

Children's victimization experiences within relationships characterized by mutual animosity were examined among 210 6th‐ and 7th‐grade boys and girls. Participants reported that a greater proportion of mutual antipathies, relative to other peers, victimized them. Moreover, the receipt of victimization within antipathetic relationships was greater when the partner in the relationship was aggressive, physically strong, non‐victimized and had low levels of internalizing problems. Perceptions of victimization and levels of maladjustment were also found to be more strongly associated with victimization from mutual antipathies than with victimization from other peers. Together, these findings highlight the importance of studying victimization in the context of antipathetic relationships and contribute to an emerging literature on the developmental significance of these relationships.     

三能级原子与两模辐射场相互作用

本文研究三能级原子与两模辐射场相互作用的量子特性。初始时场处于相干态，而原子处于不同能态时，得到了系统的动力学变化规律。并讨论了原子与压缩光作用时产生的崩塌与复苏现象．     

电磁场中量子体系的规范不变性

本文讨论了处于电磁场中的体系的量子力学形式。结果表明,虽然对体系的描述涉及到电磁势,但体系的物理性质只依赖于电场和磁场的强度;如果改变描述电磁场的势,则体系的物理性质仍保持不变.     

Gender and friendship: relationships within peer groups of young children

We examined the influences of developing gender segregation on children's friendship maintenance in a longitudinal sample of 40 (17 girls) children who began their peer group experiences as infants. Friendships were behaviorally identified and social interaction was observed and rated six times between average age 16.3 months and average age 49.1 months. The proportion of cross-gender friendships increased with age only when children formed friendships outside of the core group of peers with whom they had begun infant care. Girl-girl and cross-gender friendships were more likely to be maintained than boy-boy friendships. Cross-gender friends tended to be similar in gregariousness in both toddler and preschool periods, similar in hostile aggression as toddlers, and similar in withdrawn behavior as preschoolers. Same-gender friends were not similar in social interaction style. Social skill similarity was generally more important as a basis for friendship in the toddler periods than in the preschool periods. However, cross-gender friends tended to be similar in social skills throughout both the toddler and preschool periods.     

养鱼高产的稻田水稻减产原因与对策探讨

试验研究及大面积调查一致表明:鲜鱼亩产20～150kg,鲜鱼产出量与稻谷增产率呈极显著线性负相关关系,y=11.375～0.1543x,r=-0.9951;结果还表明,有效穗不足是养鱼高产的稻田水稻减产的实质性原因。为此初步提出了相应对策。     

Perception of Parental Reciprocity Scale (POPRS): Development and Validation with Adolescents and Young Adults

The present paper describes the development of a new scale, the Perception of Parental Reciprocity Scale (POPRS), and research findings obtained with this instrument. Based on Youniss' (1980) theory, this scale assesses the extent of perceived mutual reciprocity in adolescents'/young adults' relations with their parents. An initial pool of 51 items was administered to 141 unmarried undergraduates along with measures of self-esteem, locus of control, and consultant choice to indicate construct validity. Item analyses and reliability procedures produced a 43-item scale. A second study of 1602 students between the ages of 13 and 25 examined further issues: cross-replication, cross-validation, reliability with young adolescents, reliability over time, criterion and construct validity, and age-related differences in scores. In addition to POPRS and the scales used in Study 1, measures included three global statements, attachment to parents, attitude to private personal authority, and scores on an open-ended interview. Results from both studies demonstrated high reliability, and construct and criterion validity. Furthermore, a significant age effect supports Youniss' theory of a developmental transformation in parent-child relations beginning in late adolescence and continuing in early adulthood.