Modeling heterogeneity in social interaction processes using multilevel survival analysis.

More than 15 years ago, survival or hazard regression analyses were introduced to psychology (W. Gardner & W. A. Griffin, 1989; W. A. Griffin & W. Gardner, 1989) as powerful methodological tools for studying real time social interaction processes among dyads. Almost no additional published applications have appeared, although such data are commonly collected and the applicable questions are central to many important theoretical perspectives. To revisit the basic methods, the authors use an example from emotion regulation theory in which the level of child antisocial behavior is hypothesized to be positively associated with the hazard rate of angry emotions and negatively associated with sad, fearful emotions in the face of parental negative behavior (scolding). The authors discuss the limitations of traditional approaches to the analysis of social interaction and demonstrate improvements in the ability to model individual differences now available in existing software. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

煤矿井下掘进工作面作业人员生存质量调查信效度研究及影响因素分析

采用SF-36生存质量量表对城郊煤矿井下掘进工作面的273名作业人员进行问卷调查,并采用回归分析确定其主要影响因素。分析结果表明,重测信度系数均大于0.7,显示重测信度较好;分半信度系数为0.7290.7,说明内部一致性分半信度较好;因子累积贡献为81.476%50%,体现此次量表调查具有良好的结构效度;Logistic回归分析发现年龄和工种是影响掘进工作面作业人员生存质量的主要因素,钻眼工和人力推车工是生存质量状况最差的工种。SF-36量表在煤矿井下掘进工作面作业人员生存质量调查中,显示出良好的信效度。     

Associations between several aspects of heifer development and dairy cow survivability to second lactation

A data set from 7,768 Holstein heifers born between 2004 and 2006, including growth rates from birth until first calving; age and body weight at insemination; and incidence of diarrhea, navel infections, and bovine respiratory disease (BRD) was used to evaluate potential associations between these factors and the odds of completing the first lactation. All heifers were raised in a contract heifer operation (Rancho Las Nieves, Mallen, Spain) and returned to their herds of origin (133 herds in total) before calving. Dates of death were provided by the Subdirección General de Explotaciones y Sistemas de Trazabilidad de los Recursos Agrícolas y Ganaderos from the Ministry of Environment, and Rural and Marine Areas of the Spanish government. At the time of analysis, 2,571 (33.1%) animals out of the 7,768 considered had died. In total, 655 (8.4%) heifers did not finish first lactation, and 31.5% of these left the herd within the first 50 DIM. Also, 4.8% of heifers aborted and were rebred. Data were analyzed using a mixed-effects logistic regression and survival analysis for dichotomous variables and a mixed-effects model for continuous ones. Incidence of diarrhea or navel infection was not associated with the chances of finishing the first lactation. Heifers that completed first lactation had a lesser average age at first calving (724 ± 2 d) than those that did not (737 ± 3 d). Heifers that reached second lactation grew (0.8 ± 0.04 kg/d) more between 12 and 65 d of age than those that did not (0.7 ± 0.04 kg/d). As conception rate decreased, chances of leaving the herd before completing the first lactation increased. The number of AI services needed per conception as a nulliparous heifer was negatively associated with survivorship to second lactation. Heifers that experienced an abortion were 2.73 ± 0.52 times more likely to leave the herd before completing the first lactation (but also calved with a much older age at first calving). Heifers that experienced 4 or more BRD cases before first calving had 1.87 ± 0.14 greater odds of not completing the first lactation than those that never experienced BRD. These results show potential to forecast future heifer success in finishing the first lactation based on average daily gain early in life, incidence of BRD, reproductive performance (conception and abortion rates), and age at first calving.     

试析人的基本需要对传统聚落风水选址的影响

我国传统村落在人居环境营造方面具有丰富而优秀的经验与做法,值得今人研究与借鉴。该文从人类的基本需要方面探讨了风水学对传统聚落选址的影响,表明理想风水选址模式下的村落的确具有优良的环境品质,从而提炼出对当今建筑设计和城市规划的借鉴意义。     

Volunteer Support, Marital Status, and the Survival Times of Terminally Ill Patients.

This study examines the possibility that volunteer support can influence how long terminally ill patients survive. Hospice patient files (N=290) were coded for marital status and volunteer support condition, respectively, the latter on the basis of whether visits from volunteers were requested and received (n=94), requested but not received (n=28), or neither requested nor received (n=168). Baseline health, disease type, and demographic dimensions were comparable across support conditions. Results indicated that when a baseline health status effect was controlled for (p     

A Bayesian semi-parametric bivariate failure time model

In this paper we introduce a Bayesian semiparametric model for bivariate and multivariate survival data. The marginal densities are well-known nonparametric survival models and the joint density is constructed via a mixture. Our construction also defines a copula and the properties of this new copula are studied. We also consider the model in the presence of covariates and, in particular, we find a simple generalisation of the widely used frailty model, which is based on a new bivariate gamma distribution.     

从明清湖南灾荒诗歌看湘人生存环境的变化

从诗歌这个全新的角度，探讨明清以来湖南灾变后生产条件的嵌坏、民食问题的突显、住宿方式的改变和卫生条件的恶化等情况，探讨灾变与人们物质生存环境的制衡关系，尤其是前者对后者的多维影响，以引起全社会对灾后人们生存问题的警觉和重视。     

浅议企业有线电视的生存与发展

在市场经济条件下,企业有线电视发展滞后,我们应分析现状、总结经验、探索规律,使企业电视走出一条适合自身发展特点的路子来。     

Workshop Report: Modeling the Molecular Mechanism of Bacterial Spore Germination and Elucidating Reasons for Germination Heterogeneity

ABSTRACT:  Over the course of 2 days, top researchers in the fields of bacterial spore biology and computational biology discussed approaches to determine the cause of spore germination heterogeneity. Biological and mathematical data gaps were identified, and experimental approaches and computational strategies for modeling spore germination were presented and evaluated. As a result of these interactions, future research directions were defined, the outcome of which should result in a robust model to help define the molecular mechanism(s) of spore germination. Mechanistic understanding of germination will be instrumental for developing novel sterilization, treatment, and decontamination strategies to mitigate threats posed by spores.     

The Application of Heat Pump in Drying of Biomaterials

The UN estimates that 6.4 billion people will be living on Earth by the year 2000. As a consequence, dried biomaterials demand will rise and equipments will have to be built or redesigned to accomadate changes. The design and innovations on industrial dryers require fundamental knowledge conceived in laboratory units. The new heat pump dryer operates at a wide relative humidity and the air temperature is adjustable from -20 to 100'C. Above and belw freezing point drying modes are done in the same plant which allows the control of biomaterial properties. The technique consists of two stages, unbound weakly held water removal by freeze drying. and tightly bound moisture desorption by medium temperature drying. The fluidized and shelf heat pump dryers have the required features to dry heat sensitive biomaterials. The dryers were built and extensive research on biomaterials has been conducted at The Norwegian Institute of Technology. Many emeriments were done on effect of heat pump drying conditions on-enrime and biological active bacteria solutions, fruits, cod fish, fish feed and shrimps. At optimum heat drying conditions, the bacteria Rhodococcus reached 100% viability and dried biomolecules attained full biolosical activity. The heat pump dryer allowed adjustment of the bio-mterial properties and quality according to its phase, shape and size. Dried samples showed improvements on survival rate. rehydration, colour, hardness and mono-multimolecular sorption isotherms over poorly dried products. Beneficial results were achieved for nearly all tests. This indicates that the heat pump dryer application has high potential in processing heat sensitive biomaterials.