星空下那场天台性爱

独身的女人，各有各的生活，各有各的悲喜。尽管一个人的夜晚有些平淡灰白，但总有一些人、一些故事，好像平静湖水中的波纹，曾掀起我们心中的涟漪。这个单元，我们留给独身的女人，记录她们的夜晚，月亮背后的故事。     

钱是省出来的还是赚出来的?

钱到底是省出来还是赚出来的?调查结果呈现一边倒的状况.理智的人群占了大多数,看来古人留下的"开源节流"的训导至今还被传诵.     

Quantitative Risk Assessment Modeling for Nonhomogeneous Urban Road Tunnels

Urban road tunnels provide an increasingly cost‐effective engineering solution, especially in compact cities like Singapore. For some urban road tunnels, tunnel characteristics such as tunnel configurations, geometries, provisions of tunnel electrical and mechanical systems, traffic volumes, etc. may vary from one section to another. These urban road tunnels that have characterized nonuniform parameters are referred to as nonhomogeneous urban road tunnels. In this study, a novel quantitative risk assessment (QRA) model is proposed for nonhomogeneous urban road tunnels because the existing QRA models for road tunnels are inapplicable to assess the risks in these road tunnels. This model uses a tunnel segmentation principle whereby a nonhomogeneous urban road tunnel is divided into various homogenous sections. Individual risk for road tunnel sections as well as the integrated risk indices for the entire road tunnel is defined. The article then proceeds to develop a new QRA model for each of the homogeneous sections. Compared to the existing QRA models for road tunnels, this section‐based model incorporates one additional top event—toxic gases due to traffic congestion—and employs the Poisson regression method to estimate the vehicle accident frequencies of tunnel sections. This article further illustrates an aggregated QRA model for nonhomogeneous urban tunnels by integrating the section‐based QRA models. Finally, a case study in Singapore is carried out.     

A golden thread? The relationship between supervision,practice, and family engagement in child and family social work

Within the social work profession, supervision is highly valued. Yet it is not clear how supervision supports good practice or how supervision makes a difference for children and families. In this study, using paired observations of group supervision and family meetings alongside interviews with parents, we explored the link between supervision, practice, and engagement. Considering each data set separately, we found a range of skill levels within the supervision discussions and in the meetings with families. Parents reported generally high levels of satisfaction with the service and in relation to their individual worker. But more importantly, we found a “golden thread” between certain elements of supervision, more skilful practice, and improved parental engagement. We discuss these key elements in detail and consider what these findings tell us about good supervision and what difference it can make for families and children.     

Interference Phenomena in Temporal Evolution of Accident Probability in Workplaces

The aim of this article is to investigate some implications of complexity in workplace risk assessment. Workplace is examined as a complex system, and some of its attributes and aspects of its behavior are investigated. Failure probability of various workplace elements is examined as a time variable and interference phenomena of these probabilities are presented. Potential inefficiencies of common perceptions in applying probabilistic risk assessment models are also discussed. This investigation is conducted through mathematical modeling and qualitative examples of workplace situations. A mathematical model for simulation of the evolution of workplace accident probability in time is developed. Its findings are then attempted to be translated in real-world terms and discussed through simple examples of workplace situations. The mathematical model indicates that workplace is more likely to exhibit an unpredictable behavior. Such a behavior raises issues about usual key assumptions for the workplace, such as aggregation. Chaotic phenomena (nonlinear feedback mechanisms) are also investigated for in simple workplace systems cases. The main conclusions are (1) that time is an important variable for risk assessment, since behavior patterns are complex and unpredictable in the long term and (2) that workplace risk identification should take place in a holistic view (not by work post).