高速胶印机定心下摆式递纸机构运动综合设计

通过对几种适合高速运动的凸轮从动件运动规律进行分析比较，确定了适合高速胶印机定心下摆式递纸机构的运动规律，根据运动规律采用反转法和复数极坐标矢量法反推出凸轮的实际轮廓，以满足高速递纸时的工艺过程要求。     

Childhood Sexual Abuse Profiles and Psychological Functioning in Adult Males

ABSTRACT

This study used a person-centered approach to generate profiles of males’ sexual abuse characteristics and then link profiles to other types of childhood maltreatment and adversity, and adult outcomes. Data were drawn from 215 North American males (86% Caucasian) aged 17–61 years recruited from websites offering support for sexual abuse. Latent profile analysis identified three profiles, ranging from 1–2 instances of fondling by an unfamiliar extrafamilial perpetrator to chronic, penetrative abuse by individuals within and outside the family. Profiles were labeled Severe (26%), More Severe (33%), and Most Severe (41%). Chi-squares and analysis of variance showed that men in the Most Severe profile were more likely to experience childhood emotional and physical abuse, and a greater number of non-victimization adversities, than men in the other two profiles. After controlling for multiple victimization and adversity, men in the More Severe and Most Severe profiles reported significantly greater internalizing problems than men in the Severe profile, and men in the Most Severe profile reported significantly more trauma symptoms than men in the Severe profile. While these results require replication, they suggest that treatment should be tailored to the individual needs of male survivors.     

Patterns of conflict and enrichment in work-family balance: A three-dimensional typology

Abstract

A four-dimensional typology of work-family balance (WFB) that has previously been reported was tested in four samples: Finnish nurses (n=662), Slovenian nurses (n=667), Finnish health and social care workers (n=1493) and Finnish service sector employees (n=827). Latent profile analyses identified three rather than four types of WFB in each sample. In line with the four-dimensional typology, a Beneficial type (56% to 70% of the participants), experiencing high work-to-family and family-to-work enrichment (WFE and FWE) and low work-to-family and family-to-work conflict (WFC and FWC), and an Active type (15% to 20%), experiencing high WFC, FWC, WFE and FWE, emerged; however, the Harmful and Passive types were not identified. Instead, a Contradictory type (16% to 53%), experiencing high WFC and low WFE in combination with low FWC and high FWE, was found. The Beneficial type showed higher subjective well-being than the Contradictory and Active types, the latter showing higher vigour at work but also higher psychological strain and lower life satisfaction than the Contradictory type. These findings support the view that WFB is not a single state or continuum, but manifests itself in diverse combinations of WFC, FWC, WFE and FWE.     

Emotional labour profiles: Associations with key predictors and outcomes

ABSTRACT

The present study examines how three emotional labour strategies (hiding feelings, faking emotions, and deep acting) combine within different profiles of workers among two samples characterised by different types and intensity of customer contact. In addition, this research investigates the role of perceived workload as well as perceived organisational support, supervisor support, and colleagues support in the prediction of profile membership. Finally, this research also documents the relation between emotional labour profiles and adaptive and maladaptive work outcomes (job satisfaction, work performance, emotional exhaustion, sleeping problems, psychological detachment, and counterproductive work behaviours). Latent profile analysis revealed three similar emotional labour profiles in both samples. Results also showed the most desirable levels on all outcomes to be associated with Profile 3 (Low Emotional Labor/Low Surface Acting and Moderate Deep Acting), followed by Profile 2 (Moderate Emotional Labor/Moderate Surface Acting and High Deep Acting) and Profile 1 (High Emotional Labor), with most comparisons being statistically significant in both samples. In contrast, a more diversified pattern of findings was observed in the prediction of profile membership. For instance, perceived colleagues support did not predict membership into any of the profiles, while supervisor support predicted an increased likelihood of membership into Profile 3 relative to Profiles 1 and 2.     

Counseling for Career Decision‐Making Difficulties: Measures and Methods

Career indecision may be the primary reason people go to career counselors. Much effort has been exerted to identify and investigate the causes of clients' career decision‐making difficulties. With the aim of facilitating clients' career decision making, the use of career indecision assessments can promote the effectiveness and efficiency of face‐to‐face career counseling. The authors review three evidence‐based, cost‐free assessments derived from decision theory: the Career Decision‐Making Difficulties Questionnaire, the Emotional and Personality‐Related Career Decision‐Making Difficulties questionnaire, and the Career Decision‐Making Profile questionnaire. The unique features of these assessments are described, and the ways they can contribute to facilitating career decision making in career counseling are explored with a case study example.     

Multiple-bias modelling for analysis of observational data

Summary.  Conventional analytic results do not reflect any source of uncertainty other than random error, and as a result readers must rely on informal judgments regarding the effect of possible biases. When standard errors are small these judgments often fail to capture sources of uncertainty and their interactions adequately. Multiple-bias models provide alternatives that allow one systematically to integrate major sources of uncertainty, and thus to provide better input to research planning and policy analysis. Typically, the bias parameters in the model are not identified by the analysis data and so the results depend completely on priors for those parameters. A Bayesian analysis is then natural, but several alternatives based on sensitivity analysis have appeared in the risk assessment and epidemiologic literature. Under some circumstances these methods approximate a Bayesian analysis and can be modified to do so even better. These points are illustrated with a pooled analysis of case–control studies of residential magnetic field exposure and childhood leukaemia, which highlights the diminishing value of conventional studies conducted after the early 1990s. It is argued that multiple-bias modelling should become part of the core training of anyone who will be entrusted with the analysis of observational data, and should become standard procedure when random error is not the only important source of uncertainty (as in meta-analysis and pooled analysis).     

大学生心理健康教育的实践与探索

为了进一步加强大学生的心理健康教育,提高大学生的心理健康水平,论文结合我院心理健康教育的实践,从大学生心理健康教育的实际出发,简要分析了大学生心理健康教育的有效形式,探讨了大学生心理健康教育的有效途径:构建"多位一体"的大学生心理健康教育网;加强心理咨询工作;建立心理档案。     

A model of toxoplasmosis incidence in the UK: evidence synthesis and consistency of evidence

Summary.  We present a Bayesian evidence synthesis model combining data on seroprevalence, seroconversion and tests of recent infection, to produce estimates of current incidence of toxoplasmosis in the UK. The motivation for the study was the need for an estimate of current average incidence in the UK, with a realistic assessment of its uncertainty, to inform a decision model for a national screening programme to prevent congenital toxoplasmosis. The model has a hierarchical structure over geographic region, a random-walk model for temporal effects and a fixed age effect, with one or more types of data informing the regional estimates of incidence. Inference is obtained by using Markov chain Monte Carlo simulations. A key issue in the synthesis of evidence from multiple sources is model selection and the consistency of different types of evidence. Alternative models of incidence are compared by using the deviance information criterion, and we find that temporal effects are region specific. We assess the consistency of the various forms of evidence by using cross-validation where practical, and posterior and mixed prediction otherwise, and we discuss how these measures can be used to assess different aspects of consistency in a complex evidence structure. We discuss the contribution of the various forms of evidence to estimated current average incidence.     

Bounded Estimation in the Presence of Nuisance Parameters

The aim of this paper is to extend in a natural fashion the results on the treatment of nuisance parameters from the profile likelihood theory to the field of robust statistics. Similarly to what happens when there are no nuisance parameters, the attempt is to derive a bounded estimating function for a parameter of interest in the presence of nuisance parameters. The proposed method is based on a classical truncation argument of the theory of robustness applied to a generalized profile score function. By means of comparative studies, we show that this robust procedure for inference in the presence of a nuisance parameter can be used successfully in a parametric setting.