Effects of gall volume on survival and fecundity of gall-making aphidsAdelges japonicus (Homoptera: Adelgidae)

Summary The number of larvae reaching maturity within the gall ofAdelges japonicus was positively related to gall volume, and the relationship between the number of mature larvae and gall volume did not change with different densities of colonized larvae. The population changes in the bud galls ofA. japonicus were surveyed by collecting the galls, which did not suffer predation or parasitism within the galls, from young artificial plantations ofPicea jezoensis over two years. In the year when the density of colonized larvae was high, they suffered a 42% mortality within the galls, whereas mortality was nearly zero in the low density year. The numbers of larvae per gall were positively correlated with gall volume. The regression lines of the number of colonized larvae on gall volume did not differ significantly in the regression coefficients between the two years, whereas the intercept was significantly higher in the year when the density of colonized larvae was higher. However, different within-gall mortality nullified this difference, and the regression lines of the number of mature larvae on gall volume had no significant difference both in the regression coefficients and the intercepts. This suggests that the number of mature larvae per gall was limited by available resources within the gall which were positively related to gall volume. In 25% of the galls in which mature larvae inhabited, the space within the galls were completely filled by the larvae, indicating that space was one of the limiting resources. Gall volume also affected the number of adults that emerged from the gall and the potential number of their progeny.     

关于线性互补问题的迭代算法

建立了一类求解线性互补问题的迭代算法。在一定条件下,研究了保证原问题的解存在唯一的充分条件,并且证明了新算法的收敛性。     

对品牌不当延伸的思考

文章界定了品牌延伸的内涵,分析了品牌延伸的动力机制,阐述了品牌不当延伸的主要危害,如引起消费者的不良联想、破坏原有品牌形象、降低消费者对品牌的忠诚度及失去老顾客、使原有品牌价值流失等。就如何正确开展品牌延伸提出了围绕核心价值开展品牌延伸、遵循品牌延伸"近亲繁殖有益"原则、根据产品的不同分类来实行多品牌命名等观点。     

论个体人力资源开发的基本内容

本文认为,基于人力资本理论的个体人力资源开发就是对个人进行人力资本投资以提高工作所需人力资本水平改进工作绩效的有计划的系列的活动。文章认为个体人力资源开发的基本内容是知识开发、技能开发和能力开发。     

网络时代馆际互借模式之研究

馆际互借、资源共享的观念在我国已推行多年 ,由于图书馆自动化系统及网络系统的不断发展 ,网络时代的资源共享和馆际互借成了当前一个非常重要的课题。现代图书馆必须利用各种信息资源 ,达成馆际互借资源共享的目的。世界各国图书馆都在探讨馆际互借的模式 ,并且提出了各种方案 ,加以实践和探索。由于各国或地区情况的多样性 ,各种馆际互借的方式也不相同。本文主要探讨了美国、英国、德国、日本及中国香港、台湾地区馆际互借的模式 ,建设性地提出了我国馆际互借资源共享发展的趋势     

黑龙江省资源型城市转型中应处理好的几个关系

黑龙江省作为全国煤炭、森林和石油等资源储量大省,随着资源的过度采掘,城市转型中的问题凸显。实证研究分析表明,黑龙江省资源型城市转型应注意城市的可持续发展,建立合理的产业结构,注重资源的利用与节约、环境保护与社会稳定等问题。同时,应处理好解放思想与实事求是、小康社会建设与现行体制、环境建设与社会效益、原有优势与现实差距、社会稳定与发展定位等五个方面关系,从而促进资源型城市转型的顺利进行。     

威尔弗雷德·欧文诗歌的圣经母版——以《父子的故事》为例

《圣经》是许多英美经典作家和诗人文学艺术创作永恒的母题。一次世界大战期间英国著名的战地诗人威尔弗雷德·欧文也不例外。他有极浓厚的《圣经》情结,他的诗作通过化用《圣经》典故,将作品与钦定本《圣经》进行互文,从而增加了诗作的厚重、可读性和艺术魅力。本文考察了诗人的有关文化背景,分析了他的诗歌特色以及它们与钦定本《圣经》之间紧密的艺术关系。     

知识经济时代中国企业的人力资源管理:智力资源管理

知识经济的兴起标志着人类社会正在步入一个以知识资源为依托的经济时代里。在这样的时代里,智力资源成为企业可持续发展的第一资源。人力资源管理有向资本化、战略化、人本化和虚拟化发展的趋势,企业对智力资源的管理自然也成为其人力资源管理的重要内容。使企业的知识得以传播、共享、积累与创新,进而提高企业的技术创新能力。智力资源管理对企业技术创新的作用已经日渐明显,已成为中国企业人力资源管理领域的新发展。     

SBR工艺特点及SBR脱氮除磷技术

介绍了序批式活性污泥法(Sequencing Batch Reactor,简称SBR)工艺的产生、发展和特点以及目前脱氮除磷研究的主要进展。     

Firm-level training in local economic systems: Complementarities in production and firm innovation strategies

The paper presents a conceptual review over the main aspects concerning the role of human capital investments and training activities within production processes, followed by empirical evidence on two local economic systems in Northern Italy, based on recent survey data. Theoretical and empirical considerations are brought together in order to provide new insights on the role of training and the factors associated to training activities at firm level.The potential driving factors of training here analysed compounds structural characteristics, labour demand dynamics, human resource management practices, workforce features, and firm performances. We observe that training activities emerge positively associated with high-performance practices, innovative labour demand features, workforce skill level, firm size, and are affected by labour flexibility in various directions. Empirical evidence confirms most previous results but also adds further important insights. The analysis suggests that a widening gap, between few innovatively evolving and many stagnant firms, could characterise the future dynamics of the Region. The high relevance of structural variables, labour demand factors and HRM/innovation practices shows that regional industrial policies and labour policies should be jointly implemented for increasing potential firm productivity. This is a key concern for the current debate on local systems economic development in the European and Italian environment.