烟梗投料麻绳剔除装置的设计与应用

针对目前新疆卷烟厂制丝车间梗线生产HT梗时,采用麻袋封装,在梗条的运输过程中麻袋破损,导致梗条中混有麻绳,目前采用人工分拣,劳动强度大的问题,本文设计了一种烟梗中麻绳麻丝杂物装置,该装置由行星辊,耙钉,粘条,传动轴,行星辊,升降丝杠,机架等组成.装置制作完成后为了验证该装置的加装后的麻绳剔除效果,同时找到满足工艺要求条件下的最佳剔除效果,进行电机转速,工作时间和物料重量三因素三水平的正交试验.试验结果表明,该装置剔除效果最佳时的工作状态组合为:电机转速n为72r/min,工作时间t为2h,物料重量m为6000kg,继续优化验证试验,试验值与理论值相差小于5％,最佳结果满足烟梗中麻绳剔除分拣要求.     

CEO hometown identity and firm green innovation

Drawn on the upper echelons theory, this study investigates how chief executive officer (CEO) hometown identity drives firm green innovation. We propose that CEO hometown identity has a positive impact on a firm's green innovation performance. Furthermore, we explore the moderating role of managerial discretion determined by organizational and environmental factors (i.e., institutional ownership and market complexity). We propose that institutional ownership negatively moderates the positive relationship between CEO hometown identity and green innovation, but market complexity plays a positive moderating role. Using Chinese publicly listed firms from 2002 to 2016 in heavily polluting industries, our findings support these hypotheses. Our research contributes to the upper echelons theory and corporate social responsibility literature and has substantial practical implications.     

Environmental performance,sustainability, governance and financial performance: Evidence from heavily polluting industries in China

This study seeks to contribute to the existing business strategy and the environment literature by examining the effect of governance structures on Chinese firms' environmental performance, and consequently ascertain the extent to which the financial performance–environmental performance nexus is moderated by governance mechanisms. Using a sample of Chinese companies from heavily polluting industries over a 5-year period, our baseline findings suggest that, on average, board size and governing board meetings are positively associated with Chinese firms' environmental performance, whilst board independence and gender diversity have positive, but insignificant association with firms' environmental performance. Our evidence suggests further that the examined internal governance mechanisms have a mixed moderating effect on the link between financial performance and environmental performance. Our findings have important implications for company executives, environmental activists, policy-makers, and regulators. Our results support insights drawn from agency, resource dependence, stakeholder, and legitimacy theories.     

环境规制、高管背景特征与企业绩效的实证研究

基于波特假说和高层梯队理论,从微观视角检验环境规制对企业绩效的影响,考证企业决策视角下高管背景特征在二者间的调节效应.研究发现:环境规制与企业绩效显著正相关,高管背景特征在其中起调节作用,这种调节作用因背景特征的性质而异,具体表现为高管性别特征正向调节二者间关系,但不显著,高管学历特征和年龄特征显著负向调节二者间关系,高管任期特征和党员身份特征则显著正向调节二者间关系,且其背景特征的调节作用因企业属性不同而不同.拓展和丰富了环境规制与企业绩效的研究视域及作用路径,为企业应对环境规制、改善企业绩效提供了参考依据,为政府加强环境规制强度和环保执法力度贡献了微观证据.     

既有住区环境再生的目标体系构建研究

既有住区环境品质退化是多种因素共同作用下的结果,而且不同维度的既有住区环境再生品质目标也有很大不同,需要制定从单项改造到整体化改造、类型化改造到层级化改造的递进式改造目标和清单体系。对住区各类环境构成要素进行实地调研,结合既有住区环境再生理论以及欧美和日本的先进经验,尝试建立住区环境再生的目标体系的阶段性指标。     

基于熵权法的苏南三市区域物流能力评价研究

影响区域物流因素包括基础设施建设水平、运输工具与设备性能、运输管理水平、科技应用与信息化水平、物流人员素质及物流体系的应急应变处理能力和所在区域发展环境支持程度等。根据上述因素建立区域物流能力指标体系,利用熵权法得出评判指标的熵权,由此建立区域物流能力评价模型,模型具有指标覆盖全面,计算过程清晰简单的优点。实例验证了该模型的可行性。     

Mitigating shortage and distribution costs in damaged water networks

Recent events have sparked renewed interest in disaster mitigation for public infrastructures. Presidential Decision Directive 63 identifies water distribution as being among the most vital and vulnerable of our large-scale infrastructures. Water distribution networks are vulnerable to threats such as chemical and biological contamination, cyber attacks on computer-based management systems, and physical destruction from acts of nature and intentional attack. This research develops methods for configuring the undamaged portion of the water network to mitigate the consequences of physical destruction. The approach is to find a hydraulically feasible residual network that can be pressurized to meet the demand of a subset of demand sectors. Demand sectors not pressurized then receive water through truck distribution from pressurized sectors. The objective is to minimize weighted water shortage and water truck distribution costs by identifying sectors to pressurize along with an assignment of unpressurized sectors to pressurized sectors for water delivery by truck. The paper develops an optimization model, describes a solution method, and presents computational results for three example networks.     

浅析建筑工程管理体制

从目前建筑劳务管理的现状看,大量低素质、不稳定的建筑农民工与大规模现代化的工程建设不相适应。本文分析了建筑劳务管理当前的困境与形成原因,指出成建制劳务企业目前还难以为继,包工头在相当长时间还会存在;并分析了施工企业成立自己的相对稳定的劳务施工队或劳务公司的必要性和可行性。     

舌金融危机时期中国中小型出口企业发展对策研究——以青岛为例

近几年来,中国中小型出口企业无论在规模还是实力上,都得到了快速发展。在后金融危机时期,中小型出口企业仍然面临订单减少、生产规模萎缩,贸易摩擦频繁、应收账款风险加大,原材料价格上涨、用工成本增加,人民币升值,银行信贷紧缩,融资更加困难,基础管理水平低、创新能力较差等问题。基于此,本文主要从政府、金融机构及中小型出口企业的角度,探讨各自应采取的措施。     

链条生产企业供应链管理研究

21世纪的竞争不只是企业和企业之间的竞争,而更多地表现为供应链与供应链之间的竞争。为使链条生产企业的整条供应链达到最优以获得更大的利益,必须保证供应链的效率和稳定性,而供应商的行为影响到整条供应链的综合能力,因此,构建供应商伙伴机制是链条生产企业供应链构建过程中一个十分重要环节。