What is an ‘endogenous state space’?

Summary. In the literature on choice under unforeseen contingencies, the decision maker behaves as if she aggregates possible instances of future rankings indexed by a set S. The set S is interpreted as a subjective state space even though subsequent rankings need not conform to any one of the aggregated utilities. This paper proposes a definition for a subjective state space under unforeseen contingencies that is topologically unique, derives its existence from preference primitives as opposed to the representation of preferences, and does not commit to an interpretation in which states correspond to future realized rankings. The definition topologically concurs with and extends the identification of the essentially unique subjective state space due to Dekel, Lipman and Rustichini [4].Received: 28 October 2003, Revised: 13 October 2004, JEL Classification Numbers: D11, D81, D91.I thank Eddie Dekel, Alan Kraus, Bart Lipman, Chris Shannon, and the referee for some helpful remarks.     

圆形筒仓仓壁小变形条件下的变形及应力分析

本文对用以贮存散体物料的圆形筒仓的仓壁变形和应力分布进行了分析。假定贮料对仓壁的压力和摩擦力按照公式分布。在小变形条件下根据有矩理论给出了筒仓仓壁径向位移和应力的分布解答。     

供应链企业间、企业内协调对供应柔性和企业绩效影响的实证研究

本文从能力的视角整合有关供应链协调的文献,将其分为企业之间和企业内部协调才能两类。此外,还讨论了供应柔性能力和企业绩效,在此基础上探索、检验此三者之间的关系。研究结果表明,企业内、企业间协调才能对供应柔性及企业绩效有积极作用,且供应柔性在协调才能对企业绩效影响的关系中起部分中介作用。研究结果还显示,企业内部跨职能部门之间的协调会加强企业与其合作伙伴之间协调合作的能力。     

Currency Options and Export-Flexible Firms

This paper examines the production and hedging decisions of a globally competitive firm under exchange rate uncertainty. The firm is risk averse and possesses export flexibility in that it can distribute its output to either the domestic market or a foreign market after observing the realized spot exchange rate. To hedge against its exchange rate risk exposure, the firm can trade fairly priced currency call options of an arbitrary strike price. We show that both the separation and the full‐hedging results hold if the strike price of the currency call options is set equal to the ratio of the domestic and foreign selling prices. Otherwise, neither result holds. Specifically, we show that the optimal level of output is always less than that of an otherwise identical firm that is risk neutral. Furthermore, an under‐hedge (over‐hedge) is optimal whenever the strike price of the currency call options is below (above) the ratio of the domestic and foreign selling prices.     

Enabling flexible task compositions,orders and granularities for knowledge-intensive business processes

During the last decades, many approaches and tools were developed that enable a flexible enactment of repetitive business processes. By contrast, knowledge-intensive processes (KIPs) have not been effectively supported yet. This paper proposes a data-centric and goal-driven approach that enables flexible KIP enactment with dynamically evolving task structure and varying task granularity. The approach utilises artificial intelligence planning techniques in order to enable recommendations regarding the next tasks to be enacted. Furthermore, recommendations may be dynamically adapted when mismatches between the digital process and the real-world KIP emerge. Overall, the approach provides flexibility and guidance during KIP enactment.     

How flexible are real wages in EU countries? A panel investigation

We estimate the degree of real wage flexibility in 19 EU countries in a wage Phillips curve panel framework. We find evidence for a reaction of wage growth to unemployment and productivity growth. The degree of real wage flexibility tends to be larger in the central and eastern European (CEE) countries than in the euro area; weaker in downturns than during upswings. There exists an inflation threshold, below which real wage flexibility is low. We also find that a part of the heterogeneity in real wage flexibility and unemployment may be related to differences in the wage bargaining institutions.     

Budget Rules and Flexibility in the Public Sector: Towards a Taxonomy

The practices and norms of public budgeting have often been seen as a brake on the flexibility needed of government organisations. This remains true despite historically significant financial management reforms designed around budgetary devolution. Seeing flexibility as operating along two dimensions – devolution and discretion – this paper revisits the underlying features of traditional public budgeting to develop a taxonomy of six generic ‘budget rules’. By isolating key properties of budget control, the paper uses two of the more prominent rules – annuality and purpose – to illustrate how the rules interact to generate control capacity, as well as the scope for rule variability in promoting increased flexibility.     

(Im)Balanced customer-oriented behaviors and AI chatbots' Efficiency–Flexibility performance: The moderating role of customers’ rational choices

Artificial intelligence (AI) based chatbots are increasingly deployed in frontline encounters, because they combine frontline service efficiency and flexibility. Using a large-scale data set with more than 130,000 man–machine dialogues from an e-bike sharing platform, Study 1 reveals a complex relationship between chatbots' customer-oriented behaviors and their efficiency–flexibility ambidexterity. Chatbots' level of efficiency–flexibility ambidexterity is higher when their functional and relational customer-oriented behaviors are balanced rather than imbalanced (i.e., a negative imbalance effect) and when they are balanced at a higher rather than a lower level (i.e., a positive balance effect). A follow-up experiment, Study 2, and online survey, Study 3, consistently show that the negative imbalance effect is stronger as customers' perceptions of non-personalization costs decrease and privacy concerns increase, while opportunity cost has no significant influence on the negative imbalance effect. However, consistent with rational choice theory, the positive balance effect is stronger as non-personalization costs increase, privacy concerns decrease, and opportunity cost decreases. In addition, Study 1 and 3 consistently show that in alignment with the stimulus–organism–response framework, efficiency–flexibility ambidexterity partially mediates the relationship between chatbots’ (im)balanced customer-oriented behaviors and customer patronage. This study contributes to the literature on frontline ambidexterity by introducing an AI application context and a more nuanced nonlinear view of the antecedents and consequences of frontline ambidexterity.     

Contraction under minimum wages? Operational and financial advantages of multinational subsidiaries in China

The advantages of multinational enterprises (MNEs) over domestic firms have been widely acknowledged in several streams of literature. However, a more refined analysis on the sources of their advantages is lacking. Exploiting minimum wage hikes in China as an exogenous shock, we theorize that, due to multinational advantages, the employment of multinational subsidiaries may be less affected by minimum wages than that of domestic firms, and that their multinational advantages arise from both operational and financial advantages. Using nation-wide longitudinal firm data from 1998 to 2007 and border discontinuity design (BDD) to estimate the causal effects, we find supportive evidence for our hypotheses. We contribute to the literature on multinational advantages and minimum wages.