Linking Process Quality and Resource Usage: An Empirical Analysis

Motivated by an increasing adoption of evidence‐based medical guidelines in the delivery of medical care, we examine whether increased adherence to such guidelines (typically referred to as higher process quality) is associated with reduced resource usage in the course of patient treatment. In this study, we develop a sample of US hospitals and use cardiac care as our context to empirically examine our questions. To measure a patient's resource usage, we use the total length of stay, which includes any additional inpatient stay necessitated by unplanned readmissions within thirty days after initial hospitalization. We find evidence that higher process quality, and more specifically its clinical (as opposed to its administrative) dimensions, are associated with a reduction in resource usage. Moreover, the standardization of care that is achieved via the implementation of medical guidelines, makes this effect more pronounced in less focused environments: higher process quality is more beneficial when the cardiac department's patient population is distributed across a wider range of medical conditions. We explore the implications of these findings for process‐oriented pay‐for‐performance programs, which tie the reimbursement of hospitals to their adherence to evidence‐based medical guidelines.     

中外合资企业跨文化管理的"钻石结构"模型研究--大亚湾核电跨文化管理的探索

本文在继承传统跨文化管理--从国家文化角度分析管理问题的基础上,重点从微观层面出发建立了一个跨文化管理的"钻石结构"模型,并运用这个结构模型来具体分析了大亚湾核电跨文化管理的实践活动,并对大亚湾核电跨文化管理的主要措施进行了探讨,希望这些结论能够对未来中外合资合作企业进行跨文化管理提供有益的参考和借鉴作用.     

和谐管理理论的数理表述及主要科学问题

力图从基本假定到命题,对和谐管理理论给出一个量化分析框架,并对进一步的发展方向作出预示和展望.首先,通过总结已有的研究工作,界定了和谐这一基本的概念;然后,从企业家对和谐主题的搜索入手,根据企业战略实施的阶段性工作中面临的问题和任务,提炼并给出了辨析和谐主题的方法;最后,通过分析和则、谐则、和谐主题及其与组织、环境、领导和战略之间的一致性关系和动力学机制,得到了和谐管理理论发展和应用需要解决的几个基本问题.     

强化学习算法在供应链环境下的库存控制中的应用

以两级库存为例,提出了一种优化库存管理的方法.该方法包含3种技术马尔可夫决策过程、马尔可夫博弈和一种用于求解马尔可夫博弈的强化学习算法.具体操作过程是,将一个两级的库存系统通过马尔可夫博弈建模,再用马尔可夫博弈和强化学习的知识求解该模型,并得出该系统的优化解.     

服务业员工情绪劳动策略效能的实证研究

有关服务业中情绪劳动的管理研究正在引起关注。已有研究认为员工的情绪智力影响情绪劳动中的工作绩效、工作满意度以及工作压力感,本文进一步提出个体的情绪劳动策略对此起到中介作用。通过对电信服务业员工情绪智力、情绪劳动策略和工作绩效、工作满意度、压力感的实证分析,发现情绪劳动策略在情绪智力和员工的工作绩效、工作满意度和工作压力感之间起到部分中介作用。研究结果对服务型企业的人力资源管理实践具有一定的借鉴意义。     

A continuous characterization of the maximum vertex-weighted clique in hypergraphs

For a simple graph G on n vertices with adjacency matrix A, Motzkin and Strauss established a remarkable connection between the clique number and the global maximum value of the quadratic programm: \(\textit{max}\{ \mathbf {x}^T A \mathbf {x}\}\) on the standard simplex: \(\{\sum _{i=1}^{n} x_i =1, x_i \ge 0 \}\). In Gibbons et al. (Math Oper Res 122:754–768, 1997), an extension of the Motzkin–Straus formulation was provided for the vertex-weighted clique number of a graph. In this paper, we provide a continuous characterization of the maximum vertex-weighted clique problem for vertex-weighted uniform hypergraphs.     

面向我国国立研究机构的人力资源配置模型研究

当今世界,科学技术作为第一生产力的作用日益突出,科学技术作为人类文明进步的基石和原动力的作用日益凸显,而国立研究机构作为中国科研体系的国家队和中坚力量,它的地位和规模在整个科研体系中是举足轻重的,因此合理配置国立研究机构的人力资源具有重大的理论和现实意义。目前的人力资源配置研究多针对企业,而中国的国立研究机构有其自身的特点,不能套用企业的人力资源配置方法。中国科学院作为国家在科学技术方面的最高学术机构,作为科技事业的国家队和火车头,具有代表性,因此本文以中国科学院为例,利用问卷调查、专家访谈、文献调研等方法,对影响我国国立研究机构人力资源配置的因素进行研究,并将人力资源的配置看作一个决策问题,综合考虑了发展战略、人均经费当量、人员结构、学科建设等多个约束,采用自上而下和自下而上相结合的方法,建立了面向国立研究机构的人力资源配置模型。该模型克服了以往国立研究机构对子机构人员数量通过简单趋势外推等方法进行预测的做法,集成了历史数据和专家经验,既不脱离历史情况又能够反映机构的发展战略,是一种适合国立研究机构的人力资源配置方法。该方法在中国科学院的应用实践,验证了模型的有效性。     

Reliable Ad Hoc Routing Based on Mobility Prediction

Reliability is a very important issue in Mobile Ad hoc NETworks (MANETs). Shortest paths are usually used to route packets in MANETs. However, a shortest path may fail quickly, because some of the wireless links along a shortest path may be broken shortly after the path is established due to mobility of mobile nodes. Rediscovering routes may result in substantial data loss and message exchange overhead. In this paper, we study reliable ad hoc routing in the urban environment. Specifically, we formulate and study two optimization problems. In the minimum Cost Duration-bounded Path (CDP) routing problem, we seek a minimum cost source to destination path with duration no less than a given threshold. In the maximum Duration Cost-bounded Path (DCP) routing problem, we seek a maximum duration source to destination path with cost no greater than a given threshold. We use a waypoint graph to model the working area of a MANET and present an offline algorithm to compute a duration prediction table for the given waypoint graph. An entry in the duration prediction table contains the guaranteed worst-case duration of the corresponding wireless link. We then present an efficient algorithm which computes a minimum cost duration-bounded path, using the information provided in the duration prediction table. We also present a heuristic algorithm for the DCP routing problem. In addition, we show that the proposed prediction and routing schemes can be easily applied for designing reliable ad hoc routing protocols. Simulation results show that our mobility prediction based routing algorithms lead to higher network throughput and longer average path duration, compared with the shortest path routing. This research was supported in part by ARO grant W911NF-04-1-0385 and NSF grant CCF-0431167. The information reported here does not reflect the position or the policy of the federal government.     

Joint Ordering and Pricing Strategies for Managing Substitutable Products

Starr and Rubinson (1978) develop a model to establish the relationship between product demand and relative prices. The notion of relative prices motivates us to consider a situation in which a retailer would either charge the same retail price for all products if he adopts a ‘fixed’ pricing strategy or charge different prices for different products if he adopts a ‘variable’ pricing strategy. In this paper, we develop a base model with deterministic demand that is intended to examine how a retailer should jointly determine the order quantity and the retail price of two substitutable products under the fixed and variable pricing strategies. Our analysis indicates that the optimal retail price under the variable pricing strategy is equal to the optimal retail price under the fixed pricing strategy plus or minus an adjustment term. This adjustment term depends on product substitutability and price sensitivity. We also present two different extensions of our base model. In the first extension, our analysis indicates that the underlying structure of the optimal retail price and order quantity is preserved when there is a limit on the total order quantity. The second extension deals with the issue of retail competition. Relative to the base case, we show that the underlying structure of the optimal retail price and order quantity is preserved in a duopolistic environment. Moreover, our analysis suggests that both retailers would adopt the variable pricing strategy at the equilibrium.     

Employee green behaviour: A review and recommendations for future research

Despite the increasing awareness of impacts of organizational activities on the natural environment and the urgent need for sustainable management of ecosystems, emerging research on employee green behaviour in the field of management and organizational science is largely fragmented, requiring an integrative review. Seeking to better understand research opportunities and advance theoretical and empirical development, this paper evaluates available research on the topic by first reviewing conceptualizations and corresponding theoretical approaches. It then develops an overarching framework to evaluate the findings of empirical studies at different levels of analysis for different approaches. It concludes with recommendations for future research on employee green behaviour and provides important implications for environmental sustainability in organizations.