Managed by the other: cultural anxieties in two Anglo-Americanized Swedish firms

This paper reports a study of how the co-workers in two major Swedish companies, Volvo Cars and AstraZeneca, respond to the cultural influences from an American and a British company, derived from an acquisition and a merger at the end of the 1990s. These responses are examined in terms of being ‘cultural anxieties’, a form of emotional coping with ambiguities regarding the future on the part of the co-workers. The paper shows that adapting to an alien culture is not a trivial matter but rather includes a series of re-evaluations of predominant values, norms and beliefs. The paper concludes that the organization culture literature needs to recognize the consequences of cultural changes, the movement from one largely taken-for-granted cultural regime to another, more heterogeneous and complex, and how co-workers cope with such experiences of uprooting enacted and agreed upon cultures.     

A unified solution approach for the due date assignment problem with tardy jobs

We analyze a number of due date assignment problems with the weighted number of tardy jobs objective and show that these problems can be solved in O(n²) time by dynamic programming. We show that the effects of learning or the effects of past-sequence-dependent setup times can be incorporated into the problem formulation at no additional computational cost. We also show that some single-machine due date assignment problems can be extended to an identical parallel machine setting. Finally, we improve the complexity of the solution algorithms for two other due date assignment problems.     

允许延期支付时的生产商—销售商一体化生产库存模型

在考虑信用期的情况下,研究了生产率为常数、需求率随价格变化情形下的变质性物品生产库存模型,通过考虑生产商、销售商双方的联合总收益,得到了一体化生产库存模型并给出了求解最优生产库存策略的算法和算例。     

Common due-window assignment and scheduling of linear time-dependent deteriorating jobs and a deteriorating maintenance activity

Due-window assignment and production scheduling are important issues in operations management. In this study we investigate the problem of common due-window assignment and scheduling of deteriorating jobs and a maintenance activity simultaneously on a single-machine. We assume that the maintenance duration depends on its starting time. We provide polynomial time solutions for the problem and some of its special cases, where the objective is to simultaneously minimize the earliness, tardiness, due-window starting time, and due-window size costs.     

预订销售和单斜坡型需求下变质物品库存策略研究

在供应商全程提供产品预订且允许取消预订的条件下,建立了单斜坡型需求的变质产品库存模型,其中,变质率为常数,取消预定率与时间成反比,考虑了预定销售所提供的价格折扣对现货需求的影响,也考虑了价格折扣对预定销售的提增作用,通过对模型的分析,验证了模型最优解的存在性和唯一性,给出了最优解的求解算法,并通过数值例子来验证模型和算法的有效性,研究结论能较好地对预定销售下单斜坡型需求产品的库存进行决策,具有较好的应用价值.     

乌兰察布盟生态变化及对策研究

对乌兰察布的生态状况进行了分析，发现乌盟地区气温有逐渐升高的趋势。而降水则呈现下降趋势，由此导致了乌盟地区生态环境日趋干旱化，对乌盟的农业生产产生了很大的影响，试图摸清乌盟生态环境绵趋势及其牟农业生产的影响，为农业发展提供理论指南。     

变质物品考虑资金时值和滞后支付时的库存研究

研究了变质物品在考虑资金时间价值并且采购费允许滞后支付时的最优经济订货批量问题。建立了变质物品在需求率为库存水平的线性函数,计划时域内允许缺货且短缺量完全拖后,并且考虑资金的时间价值和采购费允许滞后支付时的最优库存决策模型。给出了模型最优解存在的必要条件和求解算法,通过一个算例说明了模型的求解过程。     

Theories of Firms' Growth and the Generation of Jobs

This paper relates recent empiricalresearch on the growth of U.K. companies to the maineconomic theories of firms' growth and to empiricalresults for the U.S.A. Smaller and younger firms havebeen growing more quickly than larger and older firms, thus generating proportionately more new jobs. Theseresults do not support the various theories of staticand dynamic economies of scale. Serial correlation ofgrowth is very low, so success does not persist. Thesystematic tendency for small and younger firms togrow more quickly is the main reason why firm growthis not entirely stochastic.     

原材料-生产商-需求商一体化生产库存模型研究

考虑了生产率和需求率均为常数情形下的变质性物品生产库存模型,通过考虑原材料、生产商、需求商三方面的相关费用之和,得到了一体化生产库存模型。最后讨论了模型的性质并给出了求解最优生产库存策略的算法。     

有限计划期内多种变质性产品的经济批量计划问题

考虑了多种变质性产品在有限计划期内的经济批量计划问题,在假定生产率、需求率、变质率均为常量,以及多种变质产品具有共同生产周期的情况下,证明了总费用函数是凸函数,给出了寻找最优生产策略的算法。