制造商成本削减策略对风险规避型零售商信息共享策略的影响

考虑一个风险中性制造商和一个风险规避零售商构成的供应链，需求随机且受销售价格的影响。在销售季节之前，零售商对需求进行预测，获取需求信号；制造商对生产进行投资降低生产成本。基于零售商的不同信息共享策略及制造商的投资策略，考虑四种不同策略模型，分别得到最优零售价、批发价（及投资水平），并分析需求预测精确度对供应链成员决策和效用的影响。通过四种模型效用的对比分析，探讨制造商的投资策略以及零售商的风险规避态度对零售商信息共享策略的影响。研究发现，零售商共享需求信息对于制造商总是有益的，且制造商总是愿意采取成本削减策略；只有当制造商采取成本削减策略，且其投资成本系数较低时，共享需求信息对零售商才有益。最后，得到了制造商和零售商的均衡策略。     

Social antecedents of the role stress and career-enhancing strategies of newcomers to organizations: A longitudinal study

Newcomers experience uncertainty and stress following entry into an organization. Two features of socialization are important for reducing their stress: socialization tactics and relations with superiors and co-workers. The present study tests a structural equation model, including, first, the effects over time of initial institutional socialization tactics and, second, the association between social relations at the workplace on newcomers’ role stress and career-enhancing strategies, two years later, among a large (N=661) international sample of job and organization stayers. Using LISREL 8.3 the results indicate a good fit between the model and data on several fit indices. Institutional socialization tactics had a significant association with newcomers’ relations with both their superiors and co-workers, and a significant negative association with their role conflict. Newcomers’ relations with superiors had a negative relationship with their role ambiguity, and a positive relationship with two kinds of career-enhancing strategies that they use to aid in their adaptation to their work situation. The relations of newcomers with co-workers were positively related to role conflict and negatively related to role ambiguity. Co-worker relations were also positively related to immediate career-enhancing strategies. Role conflict was positively related to immediate and negatively related to intermediate career-enhancing strategies, while role ambiguity was negatively related to intermediate career-enhancing strategies. The results are discussed in relation to their theoretical and practical importance.     

The Effects of Information Overload on Software Project Risk Assessment*

Managers are responsible for providing effective information technology governance of the software development process. Ineffective governance leads to serious resource misallocations and negative consequences concerning Sarbanes‐Oxley compliance. In order for managers to make informed decisions about software development projects, they often need more information than is available through normal information channels, that is, they need an in‐depth review of the at‐risk project. Such in‐depth reviews, however, are costly. Hence, accurate identification of at‐risk projects for in‐depth review is critical to management's ability to govern. This research considers how two factors, information load and time pressure, affect the quality of the project‐selection process. We examine quality by observing the decision strategies involved and then relating these strategies to subsequent decision making. An experiment was conducted with experienced information systems auditors using a combination of policy‐capturing and computerized process‐tracing techniques. The participants in our study cope with information overload by accelerating their decision‐making process and adopting noncompensatory decision processes. Contrary to prior research, our process‐tracing analysis suggests that participants rarely filter information, thus implying that decision makers are unable to process all the information. Coping by resorting to noncompensatory strategies did not decrease decision quality unless combined with accelerated information processing. Participants also increase their weight on the software project risk factors that they repeatedly access and that they view for longer periods of time. The theoretical contributions and practical implications regarding what actions managers can take to reduce the negative impact of information overload are discussed.     

土地使用权机制的实现与执行

机制设计者的目的是想最优化一个基于环境参数空间的社会福利函数,但是有关环境参数的相关信息分散于经济之中,因此机制设计者既想收集尽可能多的相关信息,又想充分利用这些信息制定一个社会决策。机制通常在两个框架下讨论,分为实现和执行,两者本质区别在于后者利用了对策性思维方式。本文给出了土地使用权机制在二维信息传递空间下的实现问题,将激励相容条件引入信息有效的机制实现中,给出了占优均衡下的机制执行。研究发现:在实话实说假设下,能够降低信息传递空间维度,并且通过一个信息有效的机制来实现政府目标函数;参与人能够利用私有信息时,实话实说不能成为一个纳什均衡,但在占优均衡下可以通过机制来执行。     

An Empirical Investigation of Information Search Strategies with Implications for Decision Support System Design

Understanding how people search through and combine information before making decisions is an important concern in the study of decision making and in the design of decision support systems (DSS). The purpose of this study is to examine DSS search strategies in relation to the body of empirical research on information load. Prior research is examined in relation to basic empirically-testable hypotheses and compared to the results of this study as a way of validating the procedures used here. The transfer of information load empirical research to a DSS scenario is confirmed statistically. Then, results of an analysis of information search patterns under DSS conditions are described. Finally, implications for DSS design are discussed in terms of possible search support mechanisms for specific search strategies.     

信息共享与协同合作对两级供应链的收益影响

研究了由一个供应商和一个制造商组成的按订单生产的2级供应链系统。用数学的方法分析了信息共享与协同合作在供应商与制造商的不同策略组合下对该供应链收益的影响。通过具体算例对各种策略进行实验分析,并根据实验结果对信息共享与协调合作在各种策略中,对供应链各成员及整个供应链的收益影响进行评估。结果表明,供应链从传统模式转向完全信息共享与协同合作模式,制造商的订货次数、供应商的调整准备次数以及运输次数都大大减少,系统总成本降低了22.76%。信息共享能够降低成本,但主要收益来自系统的协调决策,而且这些收益并不是均匀地在各成员间进行分配的,而是随策略的不同而不同。     

Revealed Preference Tests of the Cournot Model

The aim of this paper is to develop revealed preference tests for Cournot equilibrium. The tests are akin to the widely used revealed preference tests for consumption, but have to take into account the presence of strategic interaction in a game‐theoretic setting. The tests take the form of linear programs, the solutions to which also allow us to recover cost information on the firms. To check that these nonparametric tests are sufficiently discriminating to reject real data, we apply them to the market for crude oil.     

Consumer Selection of Food-Safety Information Sources

The aim of this study is to examine the preferences of consumers for different information sources when they have a question about food safety. On the basis of a nationally representative survey conducted in the Netherlands, five distinct consumer groups are identified that not only differ on the reported use of information sources but also regarding several personality characteristics and sociodemographic variables. The empirical results show that two-thirds of the consumers are selective in their use of information sources and prefer either institutional or social sources. So, multiple information-acquisition patterns exist among the general public. The study illustrates how these findings can help to develop effective risk communication strategies.     

Process Tracing Analysis of Hurricane Information Displays

To study people's processing of hurricane forecast advisories, we conducted a computer‐based experiment that examined 11 research questions about the information seeking patterns of students assuming the role of a county emergency manager in a sequence of six hurricane forecast advisories for each of four different hurricanes. The results show that participants considered a variety of different sources of information—textual, graphic, and numeric—when tracking hurricanes. Click counts and click durations generally gave the same results but there were some significant differences. Moreover, participants’ information search strategies became more efficient over forecast advisories and with increased experience tracking the four hurricanes. These changes in the search patterns from the first to the fourth hurricane suggest that the presentation of abstract principles in a training manual was not sufficient for them to learn how to track hurricanes efficiently but they were able to significantly improve their search efficiency with a modest amount (roughly an hour) of practice. Overall, these data indicate that information search patterns are complex and deserve greater attention in studies of dynamic decision tasks.     

Linking organizational context with structure: a preliminary investigation of the information processing view

Although the effects of many environmental and contextual variables on organizational structure have been studied extensively, the relationships of these variables among themselves and with organizational structure remain largely inconclusive. Based on the information-processing (IP) view of organization, this study builds and tests an integrated model to investigate the factors that are likely to be associated with an organization's information intensity. The model includes two organizational contextual variables: competitive pressure and organizational innovativeness, two IP-related variables: information intensity and information technology (IT) importance, and two dimensions of organizational structure: centralization and formalization. Based on data collected in Taiwan, the results show the significant role of information intensity in mediating the effects of competitive pressure and innovativeness on IT importance and structures, thus lending strong support to the IP view of organization.     

The Effects of Cost and Asset Retrenchment on Firm Performance: The Overlooked Role of a Firm’s Competitive Environment

When firms face declining financial performance, research suggests that cost and asset retrenchment can lead to improved performance among poorly performing firms. However, previous studies have largely focused on firms operating in mature industries. This research develops and tests arguments that cost and/or asset retrenchment strategies will have different effects on firm performance in competitive environments characterized as growing and declining. In growth industries, asset retrenchment was positively related to performance improvement while cost retrenchment was unrelated. In declining industries, cost retrenchment was positively related to improved performance while asset retrenchment had a negative effect on firm performance. Implications of these findings for turnaround strategies are discussed.     

An empirical analysis of innovation strategies of biotechnology firms in the U.S.

The paper explores the strategies of biotechnology firms in the U.S. through a mail questionnaire study. Based on the responses of 89 companies we have developed strategy archetypes of these firms in R&D, marketing, and technology acquisition. In R&D, we found the firms to follow either incremental or radical strategy. In marketing, the firms use either a defender or an innovator strategy. In technology acquisition, firms differ in terms of their emphasis on licensing or developing new technology. The interrelationship among the strategy groups is weak. The R&D and technology acquisition strategies are related in the sense that aggressive technology strategy dictates radical R&D behavior with emphasis on development of new technology. We have found that firms following aggressive technology strategy tend to follow conservative marketing strategy. This is consistent with an earlier study by of German firms where it was found that firms tend to balance their technical and marketing risks. The paper also provides additional information about the factors considered to be important in product decisions for various strategies.     

Cognitive Fit: A Theory-Based Analysis of the Graphs Versus Tables Literature*

A considerable amount of research has been conducted over a long period of time into the effects of graphical and tabular representations on decision-making performance. To date, however, the literature appears to have arrived at few conclusions with regard to the performance of the two representations. This paper addresses these issues by presenting a theory, based on information processing theory, to explain under what circumstances one representation outperforms the other. The fundamental aspects of the theory are: (1) although graphical and tabular representations may contain the same information, they present that information in fundamentally different ways; graphical representations emphasize spatial information, while tables emphasize symbolic information; (2) tasks can be divided into two types, spatial and symbolic, based on the type of information that facilitates their solution; (3) performance on a task will be enhanced when there is a cognitive fit (match) between the information emphasized in the representation type and that required by the task type; that is, when graphs support spatial tasks and when tables support symbolic tasks; (4) the processes or strategies problem solvers use are the crucial elements of cognitive fit since they provide the link between representation and task; the processes identified here are perceptual and analytical; (5) so long as there is a complete fit of representation, processes, and task type, each representation will lead to both quicker and more accurate problem solving. The theory is validated by its success in explaining the results of published studies that examine the performance of graphical and tabular representations in decision making.     

On Forward Induction

A player's pure strategy is called relevant for an outcome of a game in extensive form with perfect recall if there exists a weakly sequential equilibrium with that outcome for which the strategy is an optimal reply at every information set it does not exclude. The outcome satisfies forward induction if it results from a weakly sequential equilibrium in which players' beliefs assign positive probability only to relevant strategies at each information set reached by a profile of relevant strategies. We prove that if there are two players and payoffs are generic, then an outcome satisfies forward induction if every game with the same reduced normal form after eliminating redundant pure strategies has a sequential equilibrium with an equivalent outcome. Thus in this case forward induction is implied by decision‐theoretic criteria.     

The development of global IT infrastructure

A research model of the impact of a multinational corporations’ (MNC) global strategic orientation on global IT infrastructure was developed using global integration, or the degree to which a global strategy is actually implemented, as a mediator. A “matched pair” survey of 94 MNCs was conducted (two respondents per firm) in order to guard against common source bias. The results showed that the firms that pursue a globally oriented strategy actually enacted these strategies as indicated by a wide-variety of resource flows across national units. The role of the level of global integration as a mediator between global strategic orientation and global IT capabilities was empirically demonstrated. This confirms that a global strategy is not sufficient to ensure that an enabling IT infrastructure will be developed; rather it is the actual level of integration and interdependence that is achieved as a result of the strategy that drives IT infrastructure. The primary areas in which global integration was found to be closely linked to the global IT infrastructure were human resources, which significantly influenced the reach, range, support services and planning of the global IT infrastructure, and information resources which significantly influenced the planning dimension of the infrastructure. These results strongly suggest that the transfer of people among national units creates an information needs “pull” which leads to the development of better IT infrastructure and that the “push” of standardized information also contributes positively.     

考虑策略型消费者的在线零售商库存信息披露及联合定价、库存决策模型

在两期销售环境下,研究了面向策略型消费者的在线零售商库存信息披露及联合定价、库存决策问题。考虑在线零售商库存信息共享和隐藏两种库存披露策略,构建了在线零售商两期销售利润模型。通过分析消费者的购买行为,讨论了在具有策略型消费者的市场中,在线零售商应如何选择库存信息披露策略,以及如何制定最优定价和库存决策。在此基础上,分析了相关参数对在线零售商决策及利润的影响。研究结果表明,在线零售商的最优定价及库存决策受消费者估值折扣系数和第二期定价策略的影响。特别地,当在线零售商选择第一期缺货时,更倾向于共享其库存水平信息;当在线零售商选择第二期缺货或者两期均不缺货时,消费者估值折扣系数存在一个阈值,当低于该阈值时,在线零售商会选择隐藏库存水平信息,当高于该阈值时,在线零售商会选择共享库存水平信息。     

DESIGNING INSPECTION STRATEGIES FOR UNCERTAIN ENVIRONMENTS

This paper considers the problems of designing inspection strategies for production systems terms in the presence of environmental uncertainty. The framework for determining information priorities to support inspection system planning is presented in the contaxt of a generic production system that encompasses the characteristics of many real-world serial production systems. The impact on the design decision of five key variables is considered: quality of producton processes, quality of inspection procedures, penalty cost for undetected defective units, relative cost of improving process vs. inspection, and shape of the cost functions for process and inspection enhancement. The framework for analysis involves varying factors over two or three orders of magnitude to determine optimal inspection strategies across a wide range of environments These results are used to compare design decisions made in the presence of environmental uncertainty using expected-opportunity-cost and minimization-of-maximum-opportunity-cost approaches. Design strategies are identified for situations ranging from complete lack of knowledge about the environment through increasing levels of information. Information-gathering priorities are established, and the impact on the design decision of this additional information is assayed.     

What kind of information will be required if we are to reform health care?

The only logical way to avoid unnecessary future costs and improve quality is to analyze the past, providing input for the present. The informational management strategies are ready. There is continuous quality improvement, profiling with case-mix adjustment, and other techniques that will help us manage care and caring. But these strategies all rely on the customer being empowered to make truly informed decisions (the ethical principle of autonomy) and for us to advocate for patients (beneficence). Translating relevant data into information is the concentration of medical informatics. Virtually everyone in medical management can attest to the fact that, competitive forces notwithstanding, it is time for us to recognize not only that we are in the information business, but also that this information belongs to a larger community. Clearly, it is time to collaborate!     

A Transaction‐Efficiency Analysis of an Internet Retailing Supply Chain in the Music CD Industry*

The emergence of the Internet may have fundamentally altered the mechanisms underlying information exchanges between sellers and end consumers. However, little attention has been given to the impact these mechanisms have on the efficiency of supply chain operations. This paper begins to address this deficiency in the literature by evaluating supply chain transaction efficiency effects from Internet purchases by consumers. It develops and empirically tests a theoretical framework examining the role Internet purchases have in establishing transaction‐efficiency levels in product exchanges involving sellers, placed at different supply chain echelons, and consumers. The theoretical framework integrates the transaction‐cost and internet economics, inter‐organizational information systems, and supply chain management literatures. Empirical testing, via structural equation modeling, is based on archival data in the Internet music CD market. The results show that Internet‐mediated purchases by consumers allow for greater transaction efficiencies when inventory ownership is postponed farther upstream in the supply chain and supply chain echelons are disintermediated. The results also indicate that channel structure configuration, defined by the supply chains' Internet retailing echelon, moderates these transaction efficiency effects.     

Precision of Information,Sensational Information,and Self‐Efficacy Information as Message‐Level Variables Affecting Risk Perceptions

Studies that investigate how the mass media cover risk issues often assume that certain characteristics of content are related to specific risk perceptions and behavioral intentions. However, these relationships have seldom been empirically assessed. This study tests the influence of three message‐level media variables—risk precision information, sensational information, and self‐efficacy information—on perceptions of risk, individual worry, and behavioral intentions toward a pervasive health risk. Results suggest that more precise risk information leads to increased risk perceptions and that the effect of sensational information is moderated by risk precision information. Greater self‐efficacy information is associated with greater intention to change behavior, but none of the variables influence individual worry. The results provide a quantitative understanding of how specific characteristics of informational media content can influence individuals’ responses to health threats of a global and uncertain nature.