基于钻石模型的云南野生食用菌产业核心竞争力分析

近年来,云南野生食用菌产业发展迅速,但产业在发展中也存在许多制约因素。利用迈克尔·波特的"钻石体系"模型,从生产要素、需求条件、相关与支持性产业、企业战略结构和竞争对手、政府、机遇六个方面对云南野生食用菌产业进行具体分析,并得出云南野生食用菌产业所具备的优势基本都集中在生产要素上,而对产业发展具有重要影响的因素却处于相对劣势的结论。基于以上分析,就保护资源,提高生产技术、政策扶持以及品牌战略等方面,提出提升云南野生食用菌产业核心竞争力的途径。     

中国野生植物管理影响因素分析

研究确定了中国野生植物管理的主要影响因素,并通过运用层次分析法(AHP法)对影响中国野生植物管理各个因素进行分析。结果表明:管理政策缺失,对野生植物保护意识薄弱,管理人员专业素质低,保护条例过时、可操作性差以及产权不清是5个影响中国野生植物管理的关键因素。因此,最重要的就是要建立健全野生植物管理法规,尽快修改现有的保护条例,提高其可操作性和灵活性,并完善与其相适应的配套措施,提高管理人员的专业素质和管理能力,从而提高野生植物管理水平,达到野生植物的可持续利用。     

天水地区野生花卉推广应用效益评估报告

通过采用影子工程法、机会成本法、恢复费用法、替代市场技术等方法，对天水地区的11种野生花卉推广应用的生态、经济、社会、景观效益进行定性定量评估。结果表明：推广应用11种野生花卉是“四效”并举的一项举措，对进一步合理开发利用野生花卉资源具有借鉴意义。     

Personal strain and ethical standards of the self-employed

Using strain theory to examine the relationship between sources of personal strain and ethical standards, we study how variations in the self-employed's household income, educational level, associational membership, and trust in institutions link to the extent to which they maintain high ethical standards. We test our hypotheses using data from 3716 self-employed persons across 39 countries. The self-employed's ethical standards relate positively to their household income and trust in institutions but negatively to their educational level and associational membership. A supplementary exploratory analysis provides further insights into how broader cultural and institutional contexts in which the self-employed are embedded might influence the relationship between sources of personal strain and ethical standards.     

Rallying the Troops or Beating the Horses? How Project‐Related Demands Can Lead to Either High‐Performance or Abusive Supervision

In today's high‐pressure work environment, project managers are often forced to “do more with less.” We argue that this imperative can lead project managers to engage in either high‐performance or abusive supervision behaviors. To understand this process, we develop a model and associated propositions linking a project manager's cognitive appraisal of project‐related demands to high‐performance work practices versus abusive supervision behaviors—both of which impact three project outcomes: stakeholder relationships, people‐related project success factors, and employee well‐being. We propose that the choice between high‐performance work practices and abusive supervision behaviors is moderated by a project manager's personal resources (psychological capital, emotional intelligence, and dark triad personality).     

小应变几何非线性问题有限元求解

本文以小应变几何非线性问题为研究对象,以最小势能原理或虚位移原理基础,对小变形几何非线性问题的求解方程作有限元分析;按修正拉氏表述、全量拉氏表述给出小变形几何非线性有限元方法求解位移基本量的迭代公式,这种迭代公式对于小变形几何非线性问题的有限元分析具有非常重要的理论价值及应用价值。     

Emotional labor among police officers: a diary study relating strain,emotional labor,and service performance

Using emotional labor and conservation of resources (COR) theory, this diary study aims to gain insight into the role of daily strain in emotional labor and service performance on a day-to-day basis. Strain was taken into account both as an antecedent (at the start of the work shift), and as a consequence (at the end of the work shift) of emotional labor (surface acting, deep acting) and emotional dissonance. The participants were 53 Dutch police officers who completed a three-day diary questionnaire (i.e. 159 measurement occasions). The results of multilevel analyses showed that, as hypothesized, daily strain at the start of the work shift was positively related to daily surface acting and unrelated to daily deep acting. Furthermore, daily surface acting mediated the relationship between strain at the start of the work shift and (a) service performance and (b) strain at the end of the work shift. Additionally, as predicted, daily surface acting was particularly related to emotional dissonance when strain at the start of the work shift was high.     

微生物絮凝剂的开发和应用

文章综述了近年来微生物絮凝剂的研究和应用现状,总结了微生物絮凝剂在絮凝剂产生菌的扩充、培养条件的优化、絮凝剂的提纯、生物絮凝剂的絮凝机理以及生物絮凝剂的应用等方面的研究,同时也对微生物絮凝剂的开发前景和新的研究方法提出了展望。     

单桩低应变法与钻芯法检测的结果实例验证分析

本文阐述了钻孔灌注桩低应变法检测的基本原理及其在工程中的应用,利用钻芯法结果对单桩的低应变检测结果进行了比较和验证,对桩身缺陷部位的典型反射波曲线——"N"字形曲线进行了分析探讨。同时本文还说明了用低应变反射波法对钻孔灌注桩进行完整性检测的有效性及检测中应该注意的一些问题。     

铝合金材料ε—N 曲线研究

本文分别采用 Manson—Coffin 公式和 Fu's 公式,对8条铝合金材料ε—N 曲线试验数据进行了分析、处理,并对两种公式所处理试验数据的绝对误差和相对误差作了比较。结果表明,Fu's 公式比著名的 Manson—Coffin 公式能更好地描述铝合金材料ε—N 曲线。而且 Fu's 公式还简化了ε—N 曲线的测试工作。