Good ergonomics and team diversity reduce absenteeism and errors in car manufacturing

Prior research suggests that ergonomics work design and mixed teams (in age and gender) may compensate declines in certain abilities of ageing employees. This study investigates simultaneous effects of both team level factors on absenteeism and performance (error rates) over one year in a sample of 56 car assembly teams (N = 623). Results show that age was related to prolonged absenteeism and more mistakes in work planning, but not to overall performance. In comparison, high-physical workload was strongly associated with longer absenteeism and increased error rates. Furthermore, controlling for physical workload, age diversity was related to shorter absenteeism, and the presence of females in the team was associated with shorter absenteeism and better performance. In summary, this study suggests that both ergonomics work design and mixed team composition may compensate age-related productivity risks in manufacturing by maintaining the work ability of older employees and improving job quality.     

新形势下加强学校思想政治工作的探索

主要从教育观念、基本规律和学校、家庭、社会三位一体的育人网络等方面，探索新形势下如何加强学校思想政治工作。     

Time-series primitive static states for detailing work state and flow of human-operated work machine

This paper proposes a quantification method for a comprehensive work flow in construction work for describing work states in more detail on the basis of analyzing state transitions of primitive static states (PSS), which consist of 16 symbolic work states defined by using on-off state of the lever operations and joint loads for the manipulator and end-effector. On the basis of the state transition rules derived from a transition-condition analysis, practical state transitions (PST), which are common and frequent transitions in arbitrary construction work, are defined. PST can be classified into essential state transition (EST) or nonessential state transitions (NST). EST extracts common phases of work progress and estimates positional relations between a manipulator and an object. NST reveals wasted movements that degrade the efficiency and quality of work. To evaluate comprehensive work flows modeled by combining EST and NST, work-analysis experiments using our instrumented setup were conducted. Results indicate that all the PSS definitely changes on the basis of PST under various work conditions, and work analysis using EST and NST easily reveals work characteristics and untrained tasks related to wasted movements.     

Female sex pheromone components ofHeliothis peltigera (Lepidoptera: Noctuidae)

Ten compounds were found in the sex pheromone glands ofHeliothis peltigera (Schiff) and identified as tetradecenal, (Z)-9-tetradecenal, (Z)-9-tetradecenol, (Z)-9-tetradecenyl acetate, hexadecanal, (Z)-7-hiexadecenal, (Z)-9-hexadecenal, (Z)-11-hexadecenal, (Z)-11-hexadecenol, and (Z)-11-hexadecenyl acetate. Behavioral tests in a wind tunnel and subsequent trapping studies conducted in the field indicated that (Z)-11-hexadecenal and (Z)-9-tetradecenal are the main pheromone components ofH. peltigera. Addition of (Z)-11-hexadecenol to the binary blend did not enhance the capture of males ofH. peltigera, but it decreased the number of males of the sympatricH. armigera. Rubber septa impregnated with a mixture of 2 mg (Z)-11-hexadecenal + 1 mg (Z)-9-tetradecenal + 0.6 mg (Z)-11-hexadecenol are recommended for monitoringH. peltigera. Contribution from the Agricultural Research Organization (ARO), No. 2454-E, 1988 series.     

MDX1060型X-荧光分析仪的应用与实践

甘肃祁连山水泥股份有限公司从英国牛津仪器公司引进的MDX1060型X-荧光分析仪于2001年11月投入使用，经过2年的调试和维护，掌握了影响其测试稳定性和准确性的各种因素(包括样品制备质量、设备维护技术、工作曲线和测试操作水平等)及其克服这些因素影响的技术措施，从而实现了该公司生产原材料和生科、熟料化学组成CaO，SiO2，Al2O3，Fe2O3，MgO，SO3，K2O和Na2O的快速准确测定，为提高生料配料质量和熟料质量提供了可靠的技术参数。     

An Improved Procedure for Determining the Work of Adhesion for Polymer-Solid Contact

Force-balance experiments in conjunction with the Johnson-Kendall-Roberts (JKR) theory have been used to determine the work of adhesion between solid systems. It has been shown that deficiencies in understanding the deformation behavior can lead to erroneous results. A modified procedure for determining the work of adhesion by force-balance experiments and JKR theory using normal displacement behavior has been introduced to address these deficiencies. This procedure involves improved experiental and data analysis protocols and has been applied to give more precise work of adhesion values for PDMS poly(dimethylsiloxane)-PDMS, PDMS-F(fluorinated silicon) and PDMS-Si (silicon) systems. The work of adhesion determinations are consistently less than those estimated by contact angle measurements.     

Switch on to games: Can digital games aid post-work recovery?

Recovery is a necessary factor in avoiding work-related strain and in feeling prepared for the next day of work. In order for recovery to be successful, an individual must experience psychological detachment from work, relaxation, mastery experiences and a sense of control, all of which have been argued to be assisted by digital game use. However, it is unclear whether these associations will be greater for certain digital game genres, or whether this would extend to other recovery-related outcomes, for instance work home interference (WHI), where the stress from work interferes with home-life. These factors may be vital in determining whether interventions aimed at improving recovery using digital games would be effective, and what form these should take. The present research surveyed 491 participants and found that the total number of hours spent playing digital games per week was positively correlated with overall recovery. Correlations varied with genre, highlighting the importance of game characteristics in this relationship: first person shooters and action games were most highly correlated with recovery. Moreover, digital game use was not related to a reduction in work–home interference. When restricting the analysis to gamers who report to have developed online relationships, online social support mediated the relationship between digital game use and recovery. Results are discussed in terms of how digital games may be utilised to improve recovery and reduce work-related stress.     

试论供电企业的电力营销管理方法

树立正确的营销意识,丰富营销方法,有利于供电企业更好地适应不断变化的市场,提供质量更高的市场服务。分析了供电企业电力营销中存在的问题,提出了具体的改革方法。     

基于互联网视域对军队政治工作的几点思考

互联网的广泛应用给军队开展政治工作带来了机遇与挑战,文章从思想政治教育、军事宣传工作和安全保密工作三个方面,从内容与形式两个维度对互联网环境下开展政治工作的创新进行了深入探讨,提出了顺势而为开展思想政治教育,充分利用互联网手段开展军事宣传工作和趋利避害做好安全保密工作的思路和方法。