Current issues and research trends on open-source software communities

Open source software (OSS) projects represent a new paradigm of software creation and development based on hundreds or even thousands of developers and users organised in the form of a virtual community. The success of an OSS project is closely linked to the successful organisation and development of the virtual community of support group. This paper reviews different fields and research topics related to the OSS communities such as collective intelligence, the structure of OSS communities, their success, communities as virtual organisations, motivation, shared knowledge, innovation and learning. The main challenges, results obtained, and the knowledge areas are detailed for each topic.     

Exploring effects of source similarity,message valence,and receiver regulatory focus on yelp review persuasiveness and purchase intentions

This study is among the first to investigate the impact of message, source, and receiver characteristics on user attitudes toward Yelp reviews, with the subsequent impact of these attitudinal evaluations on review persuasiveness. Specifically, it examines the roles of review valence (positive/negative) and sidedness (one-sided/two-sided), as well as perceived similarity with the reviewer, on user perceptions of helpfulness, trustworthiness, and credibility of the review. The study also tests moderating effects of perceived source similarity and user regulatory focus on the relationships among message characteristics, attitudinal variables, and purchase intentions. Our results disconfirm the negativity bias reported in previous studies and indicate that positive reviews are perceived as more trustworthy, credible, and helpful than negative or two-sided reviews. Review helpfulness and credibility, in turn, positively impacts its persuasiveness, with regulatory focus playing a complex nuanced role in the persuasiveness – behavioral intentions relationship. Based on the findings, future research avenues and managerial implications are proposed.     

人体红外控制LED楼道灯的电路设计

文章介绍了一种人体红外控制LED楼道灯的电路设计，整个系统利用红外线热释电效应，将人体移动所发出的极微量红外线转换成相应的电信号，对LED楼道灯进行自动开关控制。     

含硫油气井中的硫化氢气体检测和防护应急程序

文章详细分析了含硫油气井勘探开发中硫化氢气体产生的来源、硫化氢的主要检测方法,并重点论述了防护硫化氢的应急管理程序。     

初探历史性与现代性在路易斯·康作品中的交汇

路易斯·康作为20世纪下半叶世界最具影响力的建筑师之一,因其作品风格与创作思想的独特而受到众多建筑师的喜爱和追捧,特别在第三世界,其名声完全可以和柯布相媲美。通过深入的研究,不难发现康的作品正是通过对历史性和现代性的交汇而产生的,康通过其不平凡的建筑生涯形成了自己对建筑历史性的独特观点以及表达方式。     

Prediction research on the water quality in the Three Gorges Reservoir Area： a review

对河流水质模型和流域非点源污染模型在三峡库区水质预测的相关研究进行了综述，着重探讨了河流水质模型中水质组分在三峡库区多介质环境的迁移与转化机理．以及流域非点源污染模型在三峡流域污染负荷的研究进展。     

能源研发与内生经济增长

本文在内生经济增长理论的基础上,建立含能源研发的经济增长模型,借助动态优化的方法,分析能源研发对经济增长的关键作用。研究结果表明:能源研发活动具有规模收益递增的特点,对能源供应源的扩张具有特殊贡献,有助于经济摆脱能源的约束,实现可持续增长。     

西方工作压力研究概况

关于工作压力的研究,西方已经进行了几十年并取得不少成果.我国该领域的研究起步较晚,但也逐渐成为社会焦点.本文从工作压力的定义、工作压力源、工作压力的测量、工作压力的理论、工作压力的后果和工作压力的应对几个方面,来介绍西方工作压力研究的已有成果,以资我们的研究工作借鉴.     

生态经济政策问题探源研究

环境经济快速发展的迅猛态势所付出的代价令人担忧。如果环境经济政策是为环境问题量身定做的,那么环境恶化的不可逆转又从何而来?研究环境经济政策的针对性和科学性存在的问题,首先提出了生态经济政策源头存在的问题,接着从政策的针对性和科学性方面指出生态经济政策问题的理论缺陷,继而通过制度经济以及制度与行为经济的理论对生态经济政策进行探源研究,对现有生态经济政策探源研究进行补充,最后提出国外可借鉴条款。为生态经济政策经济化研究提供方向,提供改善政策效率的契机。