Resource availability in the social cloud: An economics perspective

Social cloud has emerged as a case of sharing economy, where socially connected agents share their computing resources within the community. This paper considers the social cloud as an endogenous resource-sharing network, where agents are involved in closeness-based conditional resource sharing. This study focuses on (1) the impact of agents' decisions of link addition and deletion on their own local and global resource availability as well as on others' global resource availability (as spillover effects), (2) the role of agents' closeness in determining spillover effects, (3) agents' link addition behavior, and (4) stability and efficiency of the social cloud. The findings include the following: (i) Agents' decision of link addition (deletion) increases (decreases) their local resource availability. However, these observations do not hold in the case of global resource availability. (ii) In a connected network, agents experience either a positive or a negative spillover effect and there is no case with no spillover effects. Agents observe no spillover effects if and only if the network is disconnected with three or more components. Furthermore, an agent experiences negative spillover if there is no change in its closeness. Although an increase in the closeness of agents is necessary to experience positive spillover effects, the condition is not sufficient. (iii) We study the relation between agents' distance from each other, and their local as well as global resource availabilities. We prove that the local resource availability of an agent from another agent increases with decrease in the distance between them and that maximum local resource availability is obtained from the agent with the least closeness. Using these results, we discuss which agent to add a link to, so as to maximize the local resource availability. We discuss why such results are difficult to establish for global resource availability. However, in a two-diameter network, we show that for an agent, link formation always increases the global resource availability. (iv) We also study resource-sharing network formation and its efficiency in a strategic setting. We prove the existence of a pairwise stable network. Furthermore, we provide a set of conditions for a few prominent network structures (star, complete, wheel, and bipartite networks) to be pairwise stable. We show that the “connected in pairs, otherwise disconnected” network is better than a connected network, in terms of social welfare.     

Team production,endogenous learning about abilities and career concerns

This paper studies career concerns in teams where the support a worker receives depends on fellow team members׳ efforts and abilities. In this setting, by exerting effort and providing support, a worker can influence her own and her teammates׳ project outputs in order to bias the learning process in her favor. To manipulate the market׳s assessment, we argue that in equilibrium, a worker has incentives to help or even sabotage her colleagues in order to signal that she is of higher ability. In a multiperiod stationary framework, we show that the stationary level of work effort is above and help effort is below their efficient levels.     

Group play in games and the role of consent in network formation

We study games played between groups of players, where a given group decides which strategy it will play through a vote by its members. When groups consist of two voting players, our games can also be interpreted as network-formation games. In experiments on Stag Hunt games, we find a stark contrast between how groups and individuals play, with payoffs playing a primary role in equilibrium selection when individuals play, but the structure of the voting rule playing the primary role when groups play. We develop a new solution concept, robust-belief equilibrium, which explains the data that we observe. We provide results showing that this solution concept has application beyond the particular games in our experiments.     

跨国公司、区域一体化与社会福利——一个垄断模型的扩展

跨国公司与区域一体化间的关系主要涉及两个核心问题:区域一体化如何影响跨国公司的直接投资行为;跨国公司的存在如何影响区域经济一体化收益。文章通过一个扩展后的垄断模型将以上两个传统上分割开来的命题统一于一个框架内进行探讨,分析显示,区域一体化对跨国公司直接投资的影响具有一定的不确定性,跨国公司的存在也使区域一体化的收益趋于模糊,国家特征和生产技术特征因素在两个互有联系的问题上均具有决定性的影响。     

Knowledge integration and network formation

In this paper, we highlight how inter-firm collaboration networks are influenced by the knowledge composition of goods in an industry. For this purpose, we carry out an agent-based simulation study in which firms integrate their competencies under different knowledge-based regimes. In this way networks form. The results reveal that knowledge regime significantly influences the network structure, and interaction among firms not only is very intensive when the products are specialized but also have common knowledge among them.     

Stability and Segregation in Group Formation

This paper presents a model of group formation based on the assumption that individuals prefer to associate with people similar to them. It is shown that, in general, if the number of groups that can be formed is bounded, then a stable partition of the society into groups may not exist. (A partition is defined as stable if none of the individuals would prefer be in a different group than the one he is in.) However, if individuals' characteristics are one-dimensional, then a stable partition always exists. We give sufficient conditions for stable partitions to be segregating (in the sense that, for example, low-characteristic individuals are in one group and high-characteristic ones are in another) and Pareto efficient. In addition, we propose a dynamic model of individual myopic behavior describing the evolution of group formation to an eventual stable, segregating, and Pareto efficient partition. Journal of Economic Literature Classification Numbers: C72, H41.     

Career Concerns,Monetary Incentives and Job Design*

We study optimal incentive contracts when commitments are limited, and agents have multiple tasks and career concerns. The agent's career concerns are determined by the outside market. We show that the principal might want to give the strongest explicit incentives to agents far from retirement to account for the fact that career concerns might induce behavior in conflict with the principal's preferences. Furthermore, we show that maximized welfare might be decreasing in the strength of career concerns, that optimal incentives can be positively correlated with various measures of uncertainty, and that career incentives have strong implications for optimal job design.     

Employment and Environment in a Sustainable Europe

major challenges in Europe. The EuropeanTreaties require an integration of environmental, economic and social policies in orderto allow for a Sustainable Development. This is of special importance for the linkbetween environmental and employment policy. This paper starts with a definition of thethree pillars of sustainable development, the viability (resilience) of environmental, economicand social systems. With regard to economic development and the social field,these objectives are relatively easy to operationalise: GDP and employment are generallyused headline indicators of sustainable development. The total material input into aneconomy can be seen as an indicator showing the environmental impact.This view brings about major challenges for economic theory:We include the total material input along with resource productivities to describe, explainand evaluate possible developments of economic and environmental variables.With the help of the results from a German research project weshow the relationships between the indicators, the productivities and how they can beinfluenced by policy measures. The simulation results indicate the possibility ofwin-win situations concerning the environment and employment. Additionally, we investigatewhether the developed minimum conditions of sustainable development are valid for Austria.     

Strategic network formation through peering and service agreements

We introduce a game theoretic model of network formation in an effort to understand the complex system of business relationships between various Internet entities (e.g., Autonomous Systems, enterprise networks, residential customers). In our model we are given a network topology of nodes and links where the nodes act as the players of the game, and links represent potential contracts. Nodes wish to satisfy their demands, which earn potential revenues, but may have to pay their neighbors for links incident to them. We incorporate some of the qualities of Internet business relationships, including customer–provider and peering contracts. We show that every Nash equilibrium can be represented by a circulation flow of utility with certain constraints. This allows us to prove bounds on the prices of anarchy and stability. We also focus on the quality of equilibria achievable through centralized incentives.     

Human capital formation and public debt: growth and welfare effects of three different deficit policies

We analyze an endogenous growth model public educational spending. We show that the balanced budget policy and the policy with a slight deficit yield higher growth than a debt policy where public debt grows at the same rate as GDP, unless the government is a creditor. As concerns welfare, it can be demonstrated that a strong deficit policy yields lower welfare than a balanced budget and a slight deficit policy, unless initial debt ratios are low and the intertemporal elasticity of substitution is high. Finally, there may exist an inverted U-shaped relation between welfare and deficit-financed educational spending.     

Economic integration and growth under intergenerational financing of human-capital formation

This paper examines the patterns of economic integration and endogenous growth in a two-country overlapping-generations world, in which the formation of children's human capital is financed by parents. It explores the influence of cross-border external effects in human capital on growth. Interestingly, world integration can enhance (reduce) long-run growth in both countries if cross-border external effects in human capital are sufficiently strong (weak).     

Integration, Fragmentation and the Geography of Welfare

The welfare effects of trade integration with endogenous production technology are examined in a monopolistic competition framework. In addition to explaining industry location, trade patterns and accompanying effects on local welfare, the analysis highlights the endogenous change in the costs of supervising fragmented production when economies open up to trade. By regarding fragmentation as a skill‐intensive activity, factor proportions (rather than size) strongly affect the international distribution of gains from trade. Nevertheless, albeit not generally, for a wide range of parameter values, even a skill‐poor country can participate in the gains—despite loss of industry.     

Impact of institutions on social network formation: communist party membership and social network investment in China

Using the 2003 wave of China General Social Survey (2003CGSS), we study the influence of the communist party on individual’s social networks in urban China and, thereby, present a case of socio-political institutions being an important ingredient in social network formation. We adopt a counterfactual framework and estimate the effect of communist party membership on social network investment as an average treatment effect. We find the treatment to be significant.     

Integration,network and industrial innovation in technology sourcing overseas M&A: a comparison between China and South Korea

ABSTRACT

Appropriate integration in technology sourcing overseas M&A is effective for acquirers to improve their innovation network positions and to promote domestic industrial innovation. We use the technology sourcing overseas M&A of Chinese and South Korean manufacturing industries as samples for empirical analysis. The results show that post-merger integration strategy should match resource characteristics between acquiring and acquired firms to promote industrial innovation through innovation network position improvement. Specifically, high-degree integration should match high-resource-similarity / low-resource-complementarity acquired firms, low-degree integration should match low-resource-similarity / high-resource-complementarity acquired firms, and moderate-degree integration should match high-resource-similarity / high-resource-complementarity acquired firms. The acquirer’s home country institutional development enhances the effect of post-merger integration. This study provides guidance for promoting industrial innovation through post-merger integration.     

Decentralized trade, random utility and the evolution of social welfare

We study decentralized trade processes in general exchange economies and house allocation problems with and without money. The processes are affected by persistent random shocks stemming from agents’ maximization of random utility. By imposing structure on the utility noise term—logit distribution—one is able to calculate exactly the stationary distribution of the perturbed Markov process for any level of noise. We show that the stationary distribution places the largest probability on the maximizers of weighted sums of the agents’ (intrinsic) utilities, and this probability tends to 1 as noise vanishes.     

商业集团从属企业双重资源获取与成长绩效的关联机理——基于资源观的结构性观点和跨层次研究

基于资源基础理论,将架构理论与跨层次模型相结合,利用调研数据剖析了商业集团从属企业的内、外部双重资源获取与成长绩效的关联机制。研究结果表明:双重资源获取对从属企业成长绩效具有显著的促进作用;集团成员网络资源异质性对双重资源获取与成长绩效的关系具有调节作用;从属企业的资源整合能力对双重资源获取与成长绩效的关系具有中介性调节作用;内部资源获取、资源整合能力和集团内部网络资源异质性三者对从属企业的成长绩效具有结构性影响,而外部资源获取、资源整合能力及集团内部网络资源异质性的结构性效应不显著。     

The brain drain, ‘educated unemployment’, human capital formation,and economic betterment1

Extending both the ‘harmful brain drain’ literature and the ‘beneficial brain gain’ literature, this paper analyzes both the negative and the positive impact of migration by skilled individuals in a unified framework. The paper extends the received literature on the ‘harmful brain drain’ by showing that in the short run, international migration can result in ‘educated unemployment’ and overeducation in developing countries, as well as a brain drain from these countries. A simulation suggests that the costs of ‘educated unemployment’ and overeducation can amount to significant losses for the individuals concerned, who may constitute a substantial proportion of the educated individuals. Adopting a dynamic framework, it is then shown that due to the positive externality effect of the prevailing, economy‐wide endowment of human capital on the formation of human capital, a relaxation in migration policy in both the current period and the preceding period can facilitate ‘take‐off’ of a developing country in the current period. Thus, it is suggested that while the migration of some educated individuals may reduce the social welfare of those who stay behind in the short run, it improves it in the long run.     

Accounting and the formation of share market prices over time: a mathematical institutional economic analysis through simulation and experiment

This article develops a heterogeneous agents-based model to examine the emergent dynamic properties of share market price formation over time, with a view on financial market stability under alternative accounting regimes. In the model, individual heterogeneous investors interact with each other and with institutional devices which are an accounting system (related to the business firm) and a price system (related to the Share Exchange). These interactions provide mechanisms for transmission through which firm-specific (accounting signal) and market-driven (aggregate price) factors can act. A baseline simulation analysis assesses the financial market stability under three alternative accounting designs, namely two kinds of historical cost accounting regime and one kind of fair-value (mark-to-market) accounting regime. The former prove to better stabilize the financial system in terms of market volatility and exuberance in perfectly balanced conditions between speculative and fundamentalist beliefs and intentions. An evolutionary analysis is then developed by varying the relative degree of speculative attitudes between the two sides of the market. Historical cost accounting regimes further prove to make the financial system more resilient to speculative waves occurring at inter-individual level. Baseline findings are further corroborated through experimental analysis in twelve artificial financial systems. This mathematical institutional economic analysis has general implications for both designing accounting systems aimed at enhancing financial market stability and preventing procyclicality, and the study of accounting information process in the formation of share market prices over time.     

Evaluating Projects and Assessing Sustainable Development in Imperfect Economies

We are interested in three related questions:(1) How should accounting prices be estimated?(2) How should we evaluate policy change in animperfect economy? (3) How can we check whetherintergenerational well-being will be sustainedalong a projected economic programme? We do notpresume that the economy is convex, nor do weassume that the government optimizes on behalfof its citizens. We show that the same set ofaccounting prices should be used both forpolicy evaluation and for assessing whether ornot intergenerational welfare along a giveneconomic path will be sustained. We also showthat a comprehensive measure of wealth,computed in terms of the accounting prices, canbe used as an index for problems (2) and (3)above. The remainder of the paper is concernedwith rules for estimating the accounting pricesof several specific environmental naturalresources, transacted in a few well knowneconomic institutions.