社会主义初级阶段中的剥削问题

本文首先分析了历史上存在的三种剥削形式，揭示了剥削产生的经济根源是劳动生产率水平低，生产力不发达，在此基础上，得出社会主义初级阶段剥削存在的根本原因在于现阶段的生产力水平低下，因此，生产力成为主送剥削功过的唯一标准。社会主义初级阶段生产力水平决定着社会主义制度下剥削的运行轨道。只有当生产力充分发展，剥削现象和行为才会补彻底消失。     

企业文化在国有企业中的建设评析

文章介绍了企业文化的内涵及功能,对国有企业目前企业文化建设所面临的现状进行了分析,详细阐述了存在的问题,并在此基础上提出了国有企业加强企业文化建设的应对措施。     

A Test of Two Skew Models to Explain Cooperative Breeding

Synopsis Two competing models, reproductive skew and skew selection, have been constructed to explain the evolution of cooperation among unrelated breeders. Reproductive skew is a trade-off model that assumes breeding occurs under scarce resource conditions. One breeder gains units of fecundity at the expense of other breeders during aggressive, altruistic or tug-of-war transactions. After joining, the distribution of fecundity among breeders shifts from symmetrical to asymmetrical. In contrast, skew selection is a surplus model that assumes breeding occurs during a springtime glut. Skew selection assumes that fecundity among breeders is initially asymmetrical and that joining reduces the asymmetry of fecundity. This paper reports findings from a breeding experiment on the fire ant, Solenopsis invicta, which supported skew selection rather than reproductive skew. Joining was a win-win strategy for alpha and beta breeders; beta breeders gained within-group survival benefits; alpha breeders gained between-group survival benefits. In summary, skew selection extends Darwin’s theory of natural selection by revealing the self-interested core of cooperative breeding.      

Understanding the exploration–exploitation dilemma: An fMRI study of attention control and decision‐making performance

This paper studies the cognitive processes that enable decision makers to switch between exploitation and exploration. We use functional magnetic resonance imaging (fMRI) in a sample of expert decision makers to make two main contributions. First, we identify and contrast the specific brain regions and cognitive processes associated with exploitation and exploration decisions. Exploitation activates regions associated with reward seeking, which track and evaluate the value of current choices, while exploration relies on regions associated with attentional control, tracking the value of alternative choices. Second, we propose and test the idea that stronger activation of the brain circuits related to attentional control allows individuals to achieve better decision‐making performance as a result. We discuss the implications of these results for strategic management research and practice. Copyright © 2013 John Wiley & Sons, Ltd     

污染场地现场调查与监测模式研究

污染场地调查与监测是场地环境管理、风险评估与修复治理的重要环节。文章介绍了国内外污染场地调查评估的阶段划分与勘察技术,分析了国内场地调查工作模式以及环境监测工作程序,提出了现有的常用监测技术,并总结了目前国内污染场地勘察与监测的研究现状。     

民勤绿洲水资源利用现状及治理措施探讨

为了促进民勤绿洲水资源高效利用,更好恢复生态系统,通过选用地表水、地下水开发利用率等十项指标对2012年民勤绿洲水资源开发利用现状进行综合评价;结合近年来实施重点治理所取得的成果,提出在新条件下后续治理过程中存在的问题;针对这些问题,立足实际,提出了民勤绿洲水资源持续利用的几项对策措施:优化科学实施调整方案、齐抓水量水质与开源节流并举、落实最严格水资源管理制度与深化水权制度改革、继续推进节水型社会建设。     

安康旅游业的区位开发与区域联合开发

在广泛野外调查的基础上,依据区位开发与区域联合开发的概念模型,提出安康旅游区位开发与区域联合开发的新思路,即突出山水特色,发展生态旅游;策划两个亮点,吸引国内游客;联合三大城市,实施联合开发:定位中转旅游:开拓三环市场。     

Top management team social capital,exploration-based innovation,and exploitation-based innovation in SMEs

Despite increasing interest in ambidextrous innovations, mainstream literature has excluded discussions on developing and combining exploratory innovation (ERI) and exploitative innovation (EII) in the small- and medium-sized enterprise (SME) sector. This issue from the SME perspective is worth addressing. Recent studies have conceptually argued the importance of the top management team (TMT) in managing ambidextrous innovations. Building on this argument, we explore how the top manager external social relationships foster ambidextrous innovations and whether internal social relationships among senior executives can be used to integrate such innovations. The results show that (a) distinct external managerial relationships cause differential innovations for SMEs, and (b) internal social capital among top managers could be used effectively to manage ambidextrous innovations. This research indicates that SMEs engaging in both high ERI and EII perform better when they focus on the balancing benefits of TMT internal social capital and the bridging benefits of TMT external social capital.     

Organizational and competitive influences of exploration and exploitation activities in small firms

This study explores organizational and competitive factors affecting exploration/exploitation activities in SMEs by examining the role of entrepreneurial orientation (EO), market orientation (MO) and perceived competitive intensity. We test the relationships among these variables using data collected from 55 manufacturing SMEs operating in the southern part of U. S. The findings provide a strong support for a positive association between EO, MO and exploration/exploitation activities. Perceived competitive intensity was only a significant moderator for the relationship between MO and the degree of exploratory activities. Our findings, hence, suggest the significant role organizational predictors play in enhancing exploration/exploitation activities in SMEs. Implications for research and practice are discussed.     

多径衰落信道MPSK信号超指数迭代盲解调算法

为了提高多径衰落信道下的盲解调性能,提出了一种结构简单的MPSK信号盲解调算法。首先利用超指数迭代分数间隔盲均衡器实现联合定时同步与均衡,然后对均衡器输出信号进行非线性变换实现载波频偏的估计,最后利用二阶数字判决锁相环跟踪相位变化纠正剩余频偏和相偏。仿真结果表明,在多径衰落信道条件下,与现有算法相比,基于超指数迭代分数间隔盲均衡器的盲解调算法实现简单,误码率低,而且具有收敛速度快、性能稳定等优点。