西藏高原生态系统研究的进展与展望     

张宪洲  石培礼  钟志明 《资源科学》2003,25(5):89-95

概要介绍了中国科学院拉萨高原生态试验站建站10年的定位观测和试验研究进展。拉萨站科研人员通过对以高原农田为主的生态系统长期定位监测和试验研究，在高原环境背景特征、能量传输和能量平衡、生态系统结构和生产力的形成、作物光合生理生态以及碳循环过程研究等方面进行了深入的研究，并以生态学理论为指导，在作物和牧草品种引种筛选和模式建立、人工草地建设和利用、蔬菜栽培和农业产业结构调整等方面为地方农牧业发展做出了贡献。  相似文献   

媒体变革对科学传播的影响     

黄可心 《情报科学》2007,25(9):1329-1331,1440

现代传媒的发展速度超过了以往任何一种传媒形式，并承担着比以往任何时代都更为有效的科学传播的责任。媒体变革对科学传播的影响极为直接，而科学的有效传播又成为提高公众科学素养的最重要的途径。  相似文献   

An empirical investigation of information sharing behavior on social commerce sites     

《International Journal of Information Management》2016,36(5):686-699

Social commerce sites (SCSs), a new model of social media, provide fertile ground for customers to communicate their opinions and exchange product- or service- related information. Given the significant opportunities related to the use of social media data for customers’ insight, we explore the factors driving information sharing behavior on SCSs. In this paper, we propose and empirically test a comprehensive theoretical model for customer information sharing behavior through analysis of online survey data as well as network and behavioral usage data of over four months from 1177 customers in a SCS. The research model was empirically validated with the use of both subjective and objective data in a longitudinal setting. Our results show that customer information sharing is influenced by both individual (i.e., reputation and the enjoyment of helping others) and social capital (i.e., out-degrees’ post, in-degrees’ feedback, customer expertise and reciprocity) factors. This study contributes to the existing literature by highlighting the role of directed social network in customer information sharing behavior on SCSs. We believe that the results of our study offer important insights to the IS research and practice.  相似文献   

对构建吉林省生态经济产业的探索     

张艾  张璐 《现代情报》2006,26(9):204-205

中央提出建设社会主义新农村的重大历史任务，是关系我国现代化建设全局的重大战略决策。吉林省作为农业大省，要想完成好这一历史任务，早日实现全面建设小康社会的目标，就必须走科学发展之路，加大产业结构调整力度，坚持以生态经济产业思维，统一筹划，不断创新发展模式，推进吉林经济快速、持续、健康发展。  相似文献   

Epochē, Entertainment and Ethics: On the Hyperreality of Everyday Life     

Charles?W.?HarveyEmail author 《Ethics and Information Technology》2004,6(4):261-269

In this essay, I argue that popular entertainment can be understood in terms of Husserl’s concepts of epochē, reduction and constitution, and, conversely, that epochē, reduction and constitution can be explicated in terms of popular entertainment. To this end I use Husserl’s concepts to explicate and reflect upon the psychological and ethical effects of an exemplary instance of entertainment, the renowned Star Trek episode entitled “The Measure of a Man.” The importance of such an exercise is twofold: (1) to demonstrate, once again, the fecundity of the methodological procedures Husserl bequeathed to us; more than any other philosopher, he tapped into the fundamental manners in which we lose, make and remake the meanings of our lives; and (2) to demonstrate how popular entertainment, similarly, plays a central role in the making and remaking of the meanings of our lives. If my zig-zag procedure between Husserl’s philosophy and popular entertainment is productive and cogent, in addition to elucidating Husserl’s philosophy, it will demonstrate the reality-generating potency and the constitutive power of entertainment in the contemporary world. Entertainment, via ourselves, has become the primary producer of the meanings via which consciousness constitutes the world.  相似文献   

城市形象传播:观念角色路径     

韩隽 《科学．经济．社会》2007,25(3):125-128

现代传媒对城市形象的传播作用不可替代,它自身具备的强大功能影响着城市的形象。本文对城市形象传播中传媒的角色定位进行分析,研究促进城市形象塑造的传播路径。认为媒体应发掘城市精神,建构城市主体文化,既成为沟通政权、资本和智慧的桥梁,同时对内扶助城市人群形成特有的文化归属意识,对外形成良好声誉。  相似文献   

论信息生态学视野下知识产权观念的创新与保护     

何炼红 《中国软科学》2007,(4):145-150

知识产权保护的目的在于促进知识信息的创造和传播，而知识产权保护的失衡将直接导致信息生态环境的恶化。因此，从信息生态学的角度重审知识产权保护体系，将有助于我们澄清当前知识产权保护二元分类的误区，运用系统的方法建构知识产权保护机制，以实现信息生态系统的可持续发展。  相似文献   

战略理论演化及战略生态研究综述   总被引：8，自引：1，他引：8  

张燚  张锐 《科研管理》2004,25(2):98-106

本文首先剖析了传统战略理论的演化过程及理论缺陷，同时对战略生态提出的理论依据及其重要性进行了分析。然后重点就战略生态的国内外研究现状及其思想特征、战略生态研究的主要目标、主要内容、关键问题和主要研究方法等进行了系统综述。  相似文献   

The social strategy cone: Towards a framework for evaluating social media strategies     

《International Journal of Information Management》2016,36(1):1-8

Social media is growing rapidly. Providing both risks and opportunities for organizations as it does. The social strategy cone is developed for evaluating social media strategies. This framework comprises of seven key elements of social media strategies as based on a systematic literature review and case studies. The results of 21 interviews have contributed to the construction of the social media strategy cone for analyzing social media strategies. Three levels of maturity of social media strategy are proposed: initiation, diffusion and maturity. Initiation includes the key elements: ‘target audience’ and ‘channel choice’ while all case organizations studied payed attention to these elements. Diffusion includes the elements: ‘goals’, ‘resources’ and ‘policies’. Maturity adds the elements of ‘monitoring’ and ‘content activities’. Only 3 of the 9 organizations studied are in this phase of maturity. Although, theory suggests the importance of the element of ‘monitoring’ our research shows the need for more attention in practice.  相似文献   

具有两类局中人进化对策的进化稳定策略     

赵景柱 《中国科学院研究生院学报》1996,(1)

用对策论研究生物行为的进化过程，是近年来对策论具有开创性的应用之一，而判断和求解进化对策的进化稳定策略（ＥｖｏｌｕｔｉｏｎａｒｙＳｔａｂｌｅＳｔｒａｔｅｇｙ，简记为ＥＳＳ）则是其中的关键［１，２］．研究具有两类局中人的进化对策模型，证明这种进化对策的ＥＳＳ存在的充要条件．根据这个条件可以判定这种进化对策是否具有ＥＳＳ，且当ＥＳＳ存在时，可求出ＥＳＳ．  相似文献