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91.
This article is concerned with the diverse nature and interestin the concept of community and especially asit applies to community-based natural resource management projectsthat have grown in emphasis during the past twenty years. Despiteall the rhetoric about community and its reference in a ritualisticmanner in projects and policy documents, often contrary experiencesand mixed results in the field have started stirring negativereactions from various quarters. This article delves into thechallenges and dilemmas, which the focus on community,with its lack of specificity, has conjured up for practitioners,policy-makers and academicians alike. 相似文献
92.
阐述了大学英语写作是培养学生的英语综合应用能力的重要教学手段。“准备材料—起草—反复修改—定稿”的写作程序是一种行之有效的教学模式。强调指出教师在指导学生写作教学中应注意的问题。 相似文献
93.
Let X1 X2 … XN be independent normal p-vectors with common mean vector $$ = ($$) and common nonsingular covariance matrix $$ = Diag ($sGi) [(1–p) I + pE] Diag ($sGi), $sGi> 0, i = 1… p, 1>p>=1/p–1. Write rij = sample correlation between the i th and the j th variable i j = 1,… p. It has been proved that for testing the hypothesis H0 : p = 0 against the alternative H1 : p>0 where $$ and $sG1,…, $sGp are unknown, the test which rejects H0 for large value of $$ rij is locally best invariant for every $aL: 0 > $aL > 1 and locally minimax as p $$ 0 in the sense of Giri and Kiefer, 1964, for every $aL: 0 > $aL $$ $aL0 > 1 where$aL0 = Pp=0 $$. 相似文献
94.
For estimating the common mean of a bivariate normal distribution, Krishnamoorthy & Rohatgi (1989) proposed some estimators which dominate the maximum likelihood estimator in a large region of the parameter space. We consider some modifications of these estimators and study their risk performance. 相似文献
95.
This paper provides a guided tour of those scheduling techniques in which the performance measures bear in one way or the other on job due dates. The classification is based on scheduling objectives. Within each category the theoretical developments and computational experiences have been reviewed. 相似文献
96.
The aim of this note is to suggest a revised formulation of the universal optimality criterion for full rank models as stated in Kiefer (1975). We have presented the relevant results with indications of some possible applications. 相似文献
97.
Bounded-width sequential confidence intervals and sequential tests for regression parameter based on M-estimators are extended to the case where the score-functions generating the M-estimators have jump-discontinuities. In the context of the asymptotic normality of the stopping variable, for the confidence interval problem, it is observed that the jump-discontinuities induce a slower rate of convergence. The proofs of the main theorems rest on the weak convergence of some related processes and this is also studied. 相似文献
98.
非同类企业竞争与合作策略收益模型及风险分析 总被引:2,自引:0,他引:2
在比较同类企业竞争策略模型与合作策略模型的基础上,讨论了价格的信息作用,分析了合作策略收益更大和风险并不随之增加的原因。然后以现代决策理念为出发点,探讨了企业最大利润与企业条件的关系,提出了与企业单位变动成本和生产能力条件相适应的合理最大利润的概念,对“理性企业的假设”赋予了“追求与企业条件相适应的合理最大利润”的新含义。据此设计了非同类企业产量分配函数,建立了适用性更广的非同类企业合作策略最佳收益模型,并给出了随市场价格变化的企业最佳应对策略。最后用1个算例来直观体现合作策略的优势。 相似文献
99.
100.
Maximizing Business Returns to Corporate Social Responsibility (CSR): The Role of CSR Communication 总被引:1,自引:0,他引:1
By engaging in corporate social responsibility (CSR) activities, companies can not only generate favorable stakeholder attitudes and better support behaviors (e.g. purchase, seeking employment, investing in the company), but also, over the long run, build corporate image, strengthen stakeholder–company relationships, and enhance stakeholders' advocacy behaviors. However, stakeholders' low awareness of and unfavorable attributions towards companies' CSR activities remain critical impediments in companies' attempts to maximize business benefits from their CSR activities, highlighting a need for companies to communicate CSR more effectively to stakeholders. In light of these challenges, a conceptual framework of CSR communication is presented and its different aspects are analyzed, from message content and communication channels to company- and stakeholder-specific factors that influence the effectiveness of CSR communication. 相似文献