谈工程造价资料的收集和整理工作

全面阐述了工程造价资料的收集和整理工作在工程造价管理中的作用.针对如何做好工程造价资料的收集、整理工作,谈几点体会.     

PCCP管在河南省南水北调中线配套工程中的运用

随着我国对水资源的调整和分配,长距离引调水工程逐年增多。我国引进了大量的新型管材和新的生产工艺,为供水工程管材的选择提供了更多的余地。PCCP是近几年在供水工程中采用较多的新兴管材,本文以PCCP管材在河南省南水北调中线配套工程中的应用为例,从PCCP管材的结构组成、受力特性、设计成果以及施工安装技术要求等方面详细介绍其特点,为同类工程应用该种管材提供参考。     

江西省2005年暴雨洪水特性及水文测报工作

对江西省2005年暴雨洪水特性进行了分析,并对防汛水文测报工作和水文防御山洪地质灾害的经验做了总结.     

SIRO纺纱的机理及其产品开发

分析了赛络纺（SIRO）成纱原理,比较了赛络纱、单纱、 股线在结构和性能方面的异同。指出赛络纺两股须条上产生少量捻度是由于其上有扭矩存在,形成了纱条类似股线的结构。赛络纺成纱毛羽较少,耐磨性能较好,生产流程短,具有较高的效益。还简要介绍了向种棉型赛络纱的产品,认为赛络纱用于细号轻薄织物更有利于发挥其特有的作用。     

Enhancing strength-ductility synergy in high-Mn steel by tuning stacking fault energy via precipitation

Deformation-induced twinning or martensitic transformation can improve the work-hardening capabil-ity of alloys with face-centered cubic(FCC)structures and suppress strain localization.The stacking fault energy(SFE)of alloys plays a key role in determining deformation mechanisms and mechanical prop-erties.This study developed V-bearing high-Mn steel with a tensile strength of 1288 MPa and uniform elongation of 36％by tactfully designing the composition.Precipitation of V-carbides was selected to strengthen the steel and tune the global SFE of the matrix by settling carbon.Stronger work-hardening capability due to lower SFE and finer twin/matrix lamellae provided the steel with good ductility,while precipitation strengthened it.     

Insights about mental health aspects at intralogistics workplaces – A field study

The present field study investigated mental health aspects at intralogistics workplaces, as cognitive and social demands have largely changed in this branch. Within a cross-sectional, mixed methods study design, forty-one intralogistics employees completed a survey about their working conditions and mental states. Further, nine workers participated in a systematic, qualitative group interview to obtain intralogistics specific job resources and job demands. The results were compared to known mechanisms from a long-established psychological model (the Job-Demands and Resources model, JD-R model) to evaluate if these general assumptions still apply at modern working conditions. As expected and in line with the JD-R model, regression analyzes supported that job resources predicted work engagement (p < .05) and job demands predicted burnout symptoms (p < .001) even at modern intralogistics workplaces. However, no interaction effects (Job Demands X Job Resources) were found. The qualitative interviews highlighted several job demands and job resources, which were reported as especially relevant for modern intralogistics workplaces by the participants. Based on the findings, practical recommendations were evolved for the improvement of mental health at intralogistics workplaces. Job resources, for example process transparency or respectful and esteeming leadership behavior, can be increased in order to improve work engagement. Job demands, for example task interruptions, excessive time pressure or profuse exposure to physical stress should be controlled to reduce burnout symptoms.     

Human factors and ergonomics in manufacturing in the industry 4.0 context – A scoping review

Industry 4.0 revolution has brought rapid technological growth and development in manufacturing industries. Technological development enables efficient manufacturing processes and brings changes in human work, which may cause new threats to employee well-being and challenge their existing skills and knowledge. Human factors and ergonomics (HF/E) is a scientific discipline to optimize simultaneously overall system performance and human well-being in different work contexts. The aim of this scoping review is to describe the state-of-the-art of the HF/E research related to the industry 4.0 context in manufacturing. A systematic search found 336 research articles, of which 37 were analysed utilizing a human-centric work system framework presented in the HF/E literature. Challenges related to technological development were analysed in micro- and macroergonomics work system frameworks. Based on the review we frame characteristics of an organisation level maturity model to optimize overall sociotechnical work system performance in the context of rapid technological development in manufacturing industries.