The simulation of industrial robot systems

This paper describes the GRASP computer aided design system for modelling and evaluating industrial robot workplaces. GRASP satisfies a range of simulation needs within the context of designing, implementing and operating industrial robotic systems. The GRASP software may be used to investigate robots operating by themselves or, more likely, as part of an integrated cell. Facilities within GRASP assist workplace layout, position and velocity evaluations, clash detection and co-ordination between items. A robot library exists and is being extended, and an embryo off-line programming facility has been used under restricted conditions. GRASP has been used to help solve a wide range of practical industrial robot problems and has proved itself technically, and also as an educational tool, by showing how a proposed system would operate. The paper describes the facilities within GRASP.     

A Comparative Exposure Assessment of Campylobacter in Ontario,Canada

To inform source attribution efforts, a comparative exposure assessment was developed to estimate the relative exposure to Campylobacter, the leading bacterial gastrointestinal disease in Canada, for 13 different transmission routes within Ontario, Canada, during the summer. Exposure was quantified with stochastic models at the population level, which incorporated measures of frequency, quantity ingested, prevalence, and concentration, using data from FoodNet Canada surveillance, the peer‐reviewed and gray literature, other Ontario data, and data that were specifically collected for this study. Models were run with @Risk software using Monte Carlo simulations. The mean number of cells of Campylobacter ingested per Ontarian per day during the summer, ranked from highest to lowest is as follows: household pets, chicken, living on a farm, raw milk, visiting a farm, recreational water, beef, drinking water, pork, vegetables, seafood, petting zoos, and fruits. The study results identify knowledge gaps for some transmission routes, and indicate that some transmission routes for Campylobacter are underestimated in the current literature, such as household pets and raw milk. Many data gaps were identified for future data collection consideration, especially for the concentration of Campylobacter in all transmission routes.     

领导者 请推行前馈!

一直以来，人们都把及时反馈看作领导者必备的一项基本能力。正如员工需要领导者的反馈一样，领导者也能从下属的反馈中获益。员工可以就生产及管理流程的效率提改进建议，同时也能就领导者的领导工作进行反馈。随着近年来360°全方位领导评价法的出现，这种“向上反馈”的方式将变得越来越流行。     

不妨向上质疑

企业诚信，究竟价值几何？每位企业员工似乎都知道，鼓励组织员工的向上质疑性是保证企业经营诚信的关键所在。但是，“质疑”二字，似乎总是说起来容易，做起来难。     

Italian Preschoolers' Peer‐status Linkages with Sociability and Subtypes of Aggression and Victimization

Little is known about the behavior of preschool children belonging to peer sociometric status groups (popular, average, rejected, neglected, and controversial) in cultural contexts outside North America. This study examined the social interactions of Italian preschoolers. The sample consisted of 266 Italian preschoolers (mean age of 64 months). Physical and relational subtypes of aggression and victimization, as well as sociable behavior, were measured by peer nominations and teacher ratings. Peer nominations of acceptance and rejection (like and dislike nominations) were also collected in order to form the sociometric status groups. Results of confirmatory factor analyses showed that items developed with US preschoolers appeared to work fairly well in identifying behavioral constructs in Italian preschoolers. Findings generally supported previous research with American preschoolers. Sociometrically popular children were highest in sociability, and lowest in physical and relational aggression and victimization. The opposite pattern emerged for rejected status children. Neglected status children were generally not distinguished from average status children. Results also suggested that the enactment of relational aggression promotes greater social impact for some Italian children (controversial children), and this aggression also invites more conflict and victimization. However, the sociability of controversial children appears to buffer them from rejected group status.