Minimum cost spanning tree problems with indifferent agents

We consider an extension of minimum cost spanning tree (mcst) problems in which some agents do not need to be connected to the source, but might reduce the cost of others to do so. Even if the cost usually cannot be computed in polynomial time, we extend the characterization of the Kar solution (Kar, 2002) for classic mcst problems. It is obtained by adapting the Equal treatment property: if the cost of the edge between two agents changes, their cost shares are affected in the same manner if they have the same demand. If not, their changes are proportional to each other. We obtain a family of weighted Shapley values. Three interesting solutions in that family are characterized using stability, fairness and manipulation-proofness properties.     

Collaborative Knowing: The Adaptive Nature of Cross‐Boundary Spanning

This article elaborates how experts employ boundary objects to perform collaborative work in situ across boundaries. Our study takes a practice lens to examine the adaptive nature of cross‐boundary spanning. We conduct a field study and analyse engineers' troubleshooting tasks in maintaining sophisticated wafer‐fabrication machines. Our findings report three organizing practices: identifying problem boundaries, orchestrating collective responsibilities, and developing a systemic understanding. This mode of organizing explains how experts draw lessons from boundary objects to facilitate adaptive learning and collaboration for solving complicated problems in interactive systems. Our analysis contributes to theories of cross‐boundary spanning, adaptive learning, and problem‐solving, and suggests practical lessons in managing cross‐boundary work.     

Anchors in Rough Seas: Understanding Category Spanning as a Source of Market Coordination

Prior research has deemed products that span market categories a source of cognitive and institutional disruption. Portraying spanning products as purely disruptive elements, however, does not consider their large presence in markets and, consequently, the fact that producers and consumers continue to coordinate their activities on established categories despite pervasive spanning. Our paper addresses this gap by focusing on commercial success as an important condition under which spanning products, rather than being a source of disruption, sustain market coordination. From the producer side, an increasing number of commercially successful products spanning a focal category stimulates mimicry. From the consumer side, this mimicry, net of the overall level of spanning observed in the category, improves consensus. We test these arguments by focusing on the styles that map electronic music as the established categories of a market. Empirical analyses lend support to our hypotheses.     

Facilitating intercultural negotiated practices in joint ventures: The case of a French–German railway organization

In this paper, we show how new work and managerial practices emerge in international joint ventures (IJVs), how they are co-constructed by cultural negotiating processes over time, and how this co-construction can provide synergistic effects. We use the case study of a binational railway organization which coordinates activities of its parent companies, DB and SNCF, between France and Germany, to focus on emerging practices, and use the framework of Brannen and Salk (2000) to categorize these practices. Our study centres on factors that facilitate the development of synergistic practices: organizational and communication structures, individual skills and socialization of IJV actors, and interpersonal relationships and learning processes in “boundary spanning dyads”. Where previous studies typically insist on boundary spanners as individuals, we specifically highlight the important role of boundary spanning dyads and relationships.     

Tourism and development challenges in the least developed countries: the case of The Gambia

Despite some recognition of the role of destination marketing organisations (DMOs) in crisis management, limited attention has focused on the role of DMOs in crisis events, and in particular their role in managing knowledge across diverse stakeholder groups and domains. This theoretical paper attempts to address this deficiency by synthesising knowledge management and tourism crisis management literature, to outline the potential role of DMOs in managing knowledge across boundaries during crises. Carlile's [(2004). Transferring, translating, and transforming: An integrative framework for managing knowledge across boundaries. Organization Science, 15(5), 555–568] work on boundary spanning is used to consider potential organisational and management issues for DMOs dealing with crisis events and how they should be managed. This paper argues that because of the role and nature of DMOs, they should play an important role as knowledge spanners/brokers to transfer, translate and transform knowledge to stakeholders. The paper concludes with future research avenues related to knowledge management, DMOs and crises.     

Liquidity risk integration in portfolio choice： The bid efficient frontier

In this paper, a tractable solution is proposed to integrate, to a certain extent, market liquidity risk in the portfolio selection process. It is shown how an investor may take advantage of this additional risk source within the standard mean-variance optimization framework, by in certain circumstances overcoming the pitfalls of illiquidity and in others seizing a liquidity premium. Bid prices appear effective to capture liquidity risk. The efficient frontier conceived with bid prices consists of mean-variance optimal allocations that cover more liquid stocks （large caps） under stressed market conditions and less liquid stocks （small caps） under normal conditions.     

风险喜好型零售商主导的双渠道定价策略研究(英文)

针对由一个风险喜好的零售商和一个风险规避的供应商组成的两层双渠道供应链,本文研究了当零售商在供应链中占主导地位情况下,双渠道中参与者的风险偏好程度和需求方差变化对其定价决策的影响。研究表明,随着零售商风险喜好程度的增加,零售渠道最优定价会减小;当零售商风险喜好达到一定程度时,随着需求方差的增长零售渠道最优定价才会提高。最后用一个算例验证了结论。     

The investment nature of income trusts and their role in diversified portfolios

We examine the investment characteristics of income trusts to explore their role within a portfolio as well as to clarify the on‐going political debate surrounding income trusts. Results show that income trusts exhibited risk‐adjusted performance that far outperformed equities and bonds during our sample period. We adopt a multifactor return generating process for ex‐post income trust returns to quantify the degree to which they are influenced by bond‐ and stock‐related effects. The relationship between trust returns and bond returns is very weak, whereas the relationship between trust returns and stock returns is quite strong. We conclude that while income trusts appear indistinct from equities as an asset class, they significantly expand the efficient set. Copyright © 2007 ASAC. Published by John Wiley & Sons, Ltd.     

Strategic relationships between boundary-spanning functions: Aligning customer relationship management with supplier relationship management

This review focuses on the potential impact of enhanced strategic relationships between the boundary-spanning functions in supplier organizations. Specifically, the concern is with alignment between the organizational groups managing: marketing, sales and strategic account management; purchasing and supply strategy; and, collaborations and external partnerships. The topic is framed by the organizational evolution being driven by market change, and the search for superior innovation capabilities and business agility. These changes bring new challenges in cross-boundary integration and managing complex market networks. The logic is that strategic external relationships (with customers, supplier and partners) should be mirrored in strategic internal relationships (between the functions with lead responsibilities for managing relationships with customers, supplier and partners). Approaches to enhancing this capability include process management, internal partnering strategies and internal marketing activities. The discussion identifies a number of implications for practice and new research directions.     

Knowledge transfer in multinationals: The role of inpatriates' boundary spanning

Viewing knowledge as rooted in individuals, this study investigates knowledge transfer in multinational corporations (MNCs) from an individual‐level perspective. Specifically, the author focuses on inpatriates as a particular group of knowledge actors in MNCs and examines the role of inpatriates' boundary spanning between their home unit and the headquarters for transferring their knowledge to headquarters staff. Based on a sample of 269 inpatriates in 10 German MNCs, the author found that inpatriates' boundary spanning is positively related to inpatriates' individual efforts to transfer knowledge and inpatriates' perceptions of HQ staff efforts to acquire subsidiary‐specific knowledge. Both perceived HQ absorptive capacity and mentoring by HQ staff moderate these relationships. This study's findings contribute to our understanding of the theoretical mechanisms through which MNC knowledge flows occur and highlight key requirements for the design of international staffing practices. ©2011 Wiley Periodicals, Inc.