How household food shopping behaviors changed during COVID-19 lockdown period: Evidence from Beijing,China

The COVID-19 pandemic has had a great impact on food shopping behavior. However, changes in food shopping behavior and related decision-making mechanisms remain unexplored. This study conducted a face-to-face questionnaire survey with 900 residents in three communities in Haidian, Beijing, China, to analyze food shopping behavior during the periods of pre-lockdown, lockdown (January–March 2020), and post-lockdown. Our results indicated that the preference for fresh food e-commerce shopping was accelerated by the lockdown with the usage rate increasing by 48%; the wet markets were seriously hit by the lockdown policy and had not fully recovered by the post-lockdown period (with a 75% reduction in the usage rate during lockdown). The psychological mechanisms of changes in food shopping behavior revealed that the context (e.g., community facilities) and the perceived risk of COVID-19 were two significant factors impacting the four shopping choices investigated. Specifically, the context factors affected behavior directly for supermarkets and convenience stores and indirectly for e-commerce and wet markets. The findings are expected to help in guiding emergency responses during a future pandemic as well as the long-term construction of food supply facilities.     

虚拟企业剩余生产能力管理问题探讨

资源的有效利用不但是衡量实体企业业绩的一项重要内容,更是虚拟企业有效运行的重要标志,而剩余生产能力的控制与管理则是确保资源得以有效利用的手段。基于以前的研究,本文将引用CAM-I生产能力模型,探讨虚拟企业剩余生产能力管理中所涉及的相关问题。     

Assessing self-selection and endogeneity issues in the relation between activity-based costing and performance

Studies investigating the relation between ABC adoption and performance are inconclusive and plagued with econometric problems. This study extends prior research to investigate the association between ABC adoption and four manufacturing plant performance measures (cycle-time improvement, quality improvement, cost improvement, and profitability) and to assess selection bias and the endogenous nature of their relationship. I use the Heckman (1979) model to assess sample selection bias and the Wooldridge (2002) 2SLS-IV approach, to investigate endogeneity. After controlling for sample selection bias and endogeneity, the coefficient of ABC under the Heckman method and ABC_fit under the 2SLS-IV method becomes significantly higher compared to the coefficient of ABC under the OLS method. In addition, both the inverse Mills ratio, under the Heckman model, and Hausman F-test, under the Wooldridge 2SLS approach, are positive and significant, confirming the presence of both sample selection bias and endogeneity. Overall, I find that controlling for sample selection bias and endogeneity is essential in properly assessing the significance of ABC-performance association.     

Winters乘法模型在管线探测企业库存控制中的应用--以A机械仪器有限公司为例

文中以一家地下管线探测企业为例，对其在库存管理中面临的问题进行分析，探究成因并提出解决方案：以库存成本降低为目标，加强需求预测设置合理的库存水平。为此，文中将采购物品按ABC分类法进行分类，建立了Holt-winters乘法模型，利用SPSS软件对该公司A类物品近两年的销售数据进行分析，进而对其库存金额进行预测。     

基于EIQ—ABC分析法的T宠物用品公司仓储管理实证分析

EIQ-ABC分析法是仓储管理中有效的定量分析方法,它充分挖掘订单资料的数据信息,为仓储管理提供可靠的数据支持。在对T宠物用品配送中心的实证研究中,重点应用IQ-ABC分析、IK-ABC分析和IQ-IK交叉分析对订单资料进行多维度分析,并根据分析结果提出了货位规划和货物管理等仓储管理方面的建议。     

佛山福协福特汽车维修服务中心库存管理的思考

库存管理仍是困扰某些企业管理的问题。文章从佛山福协福特汽车维修服务中心库存管理中存在的一些问题出发，对库存管理控制提出一些参考策略，以求改善库存管理，并节约企业成本。     

昌吉电力物资库存数量的确定方法研究

从研究电网公司所处的电力行业特点入手,探讨了昌吉电网公司物资的特点。主要基建物资采取零库存管理的方式,通过库存周转率的控制,使其保持在一个持续周转的过程,尽量减少搬运以及库存资源的浪费;常设库存分类管理,利用存储论及数理统计原理,确定最优库存量,为的是利用有限的仓库资源发挥最大效益的目的。     

工程建设项目物流服务定价的优化研究

描述了工程建设项目物流服务的特点,分析了影响工程建设项目物流服务企业定价的几个重要因素。在此基础上,将作业成本计算法(Activity Based Costing)导入到物流服务分步定价和综合定价这两种常用的定价方式中,并具体论述了ABC方法对这两种定价方式的优化作用。     

利用EVA-ABC模型评价供应链的运作绩效

随着经济全球化,出现了新的市场竞争主体--供应链.供应链的运作绩效评价是一个复杂而困难的任务,不仅要协调各企业内部各部门,也要平衡供应链上各企业的经营行为.利用EVA-ABC模型可以评价跨企业和整个供应链的绩效,并能最优化和协调整个供应链的作业绩效.     

快递企业基于作业成本法的成本控制研究

本文立足于快递企业的特点,建立基于ABC作业成本法的快递企业成本核算模型和成本控制模型,并选取X市邮政速递物流公司进行模型的实证分析。以期为快递企业作业成本控制系统的进一步研究奠定基础。