Coalition formation in general apex games under monotonic power indices

An apex game consists of one apex player and a set of minor players. We identify two key properties of apex games and use them to introduce the class of general apex games. We derive players' preferences over winning coalitions by applying strongly monotonic power indices on such a game and all its subgames and investigate whether there are core stable coalitions in the induced hedonic coalition formation game. Besides several general results, in particular, we develop conditions on the game for the Shapley–Shubik index, the Banzhaf index, and the normalized Banzhaf index.     

The sacrifice ratio and core inflation

The existing body of research that measures the sacrifice ratio and the determinants of the sacrifice ratio has crucially identified several disinflation episodes across many different countries, while also overwhelmingly finding evidence in favor of the “cold-turkey” approach to disinflation. However all previous studies in this topic are based exclusively on headline measures of inflation. In this paper we investigate what happens if we instead use core inflation to both identify disinflation episodes and measure the sacrifice ratio. Several important differences emerge: for example, headline inflation produces more disinflation episodes than core inflation does – something which is particularly conspicuous during the Great Recession – and episodes that are generally shorter in length. We also find that the argument in favor of the cold-turkey approach to reducing inflation disappears when combining the use of core inflation with sacrifice ratio measures that allow for varying persistent effects on output of disinflation.     

核心企业主导型创业生态系统构成与运行机制:以杭州云栖小镇为例

创业生态系统研究逐渐得到学术界重视，但缺乏基于类型学角度的具体探讨，一直处于抽象层面，这一研究现状不利于理论建构。聚焦核心企业主导型创业生态系统构成、核心企业在创业生态系统运行过程中的主导作用，实证研究国内创业生态系统运行机制，以杭州云栖小镇为案例的研究显示：①核心企业基于自身核心能力及网络中心位置，联合各类主体搭建价值网络体系，通过市场化的网络治理机制与跨界开放式创新，协调多主体在创业生态系统不同阶段、不同层次的复杂交互关系，服务于系统中创业企业发展；②在核心企业主导型创业生态系统平台搭建期，通过创业支持机制发挥主导作用。在组织运行期通过资源承诺机制、全链条孵化机制与网络嵌套机制发挥主导作用。在协同获取期，通过资源共享机制、企业协同机制发挥主导作用。     

Drivers of work engagement: An examination of core self-evaluations and psychological climate among hotel employees

Many practitioners consider employee engagement a new human resource practice through which business can cope with uncertain and turbulent industry conditions. However, the hospitality academic community is still in need of finding predictors of employee engagement. The purpose of this study was to provide theory-based empirical evidence on whether employee evaluations of self (i.e., core self-evaluations) and perceptions of organizational work environment (i.e., psychological climate) affect employee engagement. Kahn's theory of three psychological conditions and Demerouti and her associates’ job demands–resources model were used for theoretical frameworks. Data were collected from 394 hotel line-employees and managers in the United States. Results of hierarchical multiple regression analyses revealed that core self-evaluations and four components of psychological climate (i.e., customer orientation of the management, managerial support for service, internal service, and information-sharing communication) were positively associated with employee engagement. Managerial implications for human resource practice and future research directions are provided.     

Interbank tiering and money center banks

This paper provides evidence that interbank markets are tiered rather than flat, in the sense that most banks do not lend to each other directly but through money center banks acting as intermediaries. We capture the concept of tiering by developing a core-periphery model, and devise a procedure for fitting the model to real-world networks. Using Bundesbank data on bilateral interbank exposures among 2000 banks from 1999 to 2012, we find strong evidence of tiering in the German banking system. This extent of tiering is unlikely to arise in standard random networks. Indeed, we show that bank specialization and balance sheet variables predict how banks position themselves in the interbank market. This link provides a promising avenue for understanding the formation of financial networks.     

新能源汽车产业发展商业模式研究

商业模式是新能源汽车产业化的关键。从核心商业要素上看,新能源汽车产业主要出现了降低新能源汽车电池成本、解决能源供给问题和满足消费者需求三种核心商业要素的商业模式;从产业组织上看,新能源汽车产业主要有拓展型、介入型和合作型三种商业模式。为了构建有效的新能源汽车商业模式,需要明确发展重点、加大宏观指导、开展示范运营和创新试点工作以及协调好相关利益等。     

Retail career attractiveness to college students: Connecting individual characteristics to the trade-off of job attributes

This study examines how U.S. business college students evaluate the attractiveness of potential job opportunities by making trade-offs among important job attributes. Using a conjoint approach, we examine the relative importance of industry type, starting salary, five-year salary, training, benefits, and work-life balance in job choice decisions. We also examine the effects of job applicants' career expectations and core competencies on their job choice determinants. An analysis of 162 business students' evaluations of 27 job profiles indicates that five-year-salary outweighs all other attributes. Their career expectations and core competencies have a substantial influence on their ensuing job choice. We suggest recruitment strategies to target recent college graduates with consideration of individuals' different career expectations and core competencies.     

Financial networks,bank efficiency and risk-taking

Networks with a core–periphery topology are found in many financial systems across different jurisdictions. Though the theoretical and structural aspects of core–periphery networks are clear, the consequences that core–periphery structures bring for banking efficiency stand as an open question. We address this gap in the literature by providing insights as to how the structure of financial networks can affect bank efficiency. We find that core–periphery structures are cost efficient for banks, which is a characteristic that encourages the participation of banks in financial networks. On the downside, we also show that core–periphery structures are risk-taking inefficient, because they imply higher systemic risk levels in the financial system. In this way, regulators should be aware of the excessive risk inefficiency that arises in the financial system due to individual decisions made by banks in the network.     

The veto mechanism in atomic differential information economies

We establish new characterizations of Walrasian expectations equilibria based on the veto mechanism in the framework of differential information economies with a complete finite measure space of agents. We show that it is enough to consider the veto power of a single coalition, consisting of the entire set of agents, to obtain the Aubin private core. Moreover, we investigate on the veto power of arbitrarily small and big coalitions, providing an extension to mixed markets of well known Schmeidler (1972) and Vind’s (1972) results in terms of Aubin private core allocations.     

Innovation in start-ups: Ideas filling the void or ideas devoid of resources and capabilities?

We investigate how access to different types of resources affects the success of entrepreneurial start-up firms at early stages of development in small isolated economies by studying 12 start-ups based in New Zealand. We find that successful commercialization of innovations depends on the availability of complementary assets, and that capability-based resources, especially dynamic capabilities, have a greater impact on competitive advantage of start-ups than other intangible and tangible assets. For the start-ups in our study, alliances with partners are particularly important, and so the ability to form alliances is a key capability. Successful start-ups leverage their available resources to attract alliance partners in order to access necessary complementary resources. The start-ups in our study clearly demonstrated the ability to attract partners locally but struggled to do so internationally, thereby limiting their growth potential.