The core-periphery model: A note on the existence and uniqueness of short-run equilibrium

We consider the core-periphery model [P. Krugman, Increasing returns and economic geography, Journal of Political Economy 199 (1) (1991) 483–499]. The nature and stability of the possible steady states of the model have been made progressively precise; [M. Fujita, P. Krugman, A. Venables, The Spatial Economy. Cities, Regions and International Trade, MIT Press, Cambridge, 1999; R. Baldwin, R. Forslid, Ph. Martin, G. Ottaviano, F. Robert-Nicoud, Economic Geography and Public Policy, Princeton Univ. Press, 2003]. In that model as well as in all the new economic geography models that have been derived from it, the short-run (instantaneous) equilibrium is implicitly determined by the current labor distribution across regions. The numerical computations used so far to determine the short-run equilibrium, tend to suggest its existence. In this paper, an existence and uniqueness proof of short-run equilibrium is provided.     

Optimal taxation in an RBC model: A linear-quadratic approach

We reconsider the optimal taxation of income from labor and capital in the stochastic growth model analyzed by Chari et al. [1994. Optimal fiscal policy in a business cycle model. Journal of Political Economy 102, 617–652; 1995. Policy analysis in business cycle models. In: Cooley, T.F. (Ed.), Frontiers of Business Cycle Research. Princeton University Press, Princeton], but using a linear-quadratic (LQ) approximation to derive a log-linear approximation to the optimal policy rules. The example illustrates how inaccurate ‘naive’ LQ approximation – in which the quadratic objective is obtained from a simple Taylor expansion of the utility function of the representative household – can be, but also shows how a correct LQ approximation can be obtained, which will provide a correct local approximation to the optimal policy rules in the case of small enough shocks. We also consider the numerical accuracy of the LQ approximation in the case of shocks of the size assumed in the calibration of Chari et al. We find that the correct LQ approximation yields results that are quite accurate, and similar in most respects to the results obtained by Chari et al. using a more computationally intensive numerical method.     

Agglomeration under forward-looking expectations: Potentials and global stability

This paper considers a class of migration dynamics with forward-looking agents in a multi-country solvable variant of the core–periphery model of Krugman [Krugman, P., 1991. Increasing returns and economic geography. Journal of Political Economy 99, 483–499]. We find that, under a symmetric externality assumption, our static model admits a potential function, which allows us to identify a stationary state that is uniquely absorbing and globally accessible under the perfect foresight dynamics whenever the degree of friction in relocation decisions is sufficiently small. In particular, when trade barriers are low enough, full agglomeration in the country with the highest barrier is the unique stable state for small frictions. New aspects in trade and tax policy that arise due to forward-looking behavior are discussed.     

Contemporary Extensions of the Rasch Model

This paper will introduce, discuss and illustrate two contemporary extensions of theRasch model: the one parameter logistic model (Verhelst and Glas, 1995) and theMultidimensional Rasch model (Hoijtink et al., 1999). Using data with respect tothe measurement of schizotypy (Vollema and Hoijtink, 2000) the most importantfeatures of both models will be illustrated. For the one parameter logistic modelthese include: a (discrete) discrimination parameter for each item; a test for itembias; and, estimation of the location of a person on the (latent) trait that is beingmeasured. For the multidimensional Rasch model these include: specification ofthe model; and, model selection. All analyses presented in this paper can be executedusing either OPLM (Verhelst et al., 1995), TESTFACT (Wilson et al.,1984) or ConQuest (Wu et al., 1998). At the end of the paper some features ofmodels and software that have not been discussed will be summarized.     

Characterization of an extended Walrasian concept for open economies

The consistency axiom, which is quite prominent in the framework of concepts of cooperative games, can be used to characterize concepts for economies as well. Dagan [Dagan, N., 1996b. Consistency and the Walrasian allocations correspondence. A revised version of Economics Working Paper No. 151, Universitat Pompeu Fabra, Barcelona, Spain.] and van den Nouweland et al. [van den Nouweland, A., Peleg, B., Tijs, S., 1996. Axiomatic characterization of the Walras correspondence for generalized economies. Journal of Mathematical Economics 25, 355–372.] used the setting of open economies to give axiomatic characterizations of an extension of the Walras correspondence. Here, we will characterize the proportional Walrasian concept, an extension which was proposed by Thomson [Thomson, W., 1992. Consistency in exchange economies. Mimeo, Department of Economics, University of Rochester, Rochester, NY.] and which is non-empty on a much bigger class of open economies. Apart from consistency properties and other frequently used axioms, we also employ an axiom on distribution.     

Knowledge as a public good: efficient sharing and incentives for development effort

We consider Research-Development joint ventures where adverse selection arises in knowledge sharing, while there is moral hazard involved in the choice of private development efforts aimed at translating privately acquired and/or shared knowledge into valuable marketable innovations. We extend earlier work by Bhattacharya et al. [Bhattacharya, S., Glazer, J., Sappington, D., 1992. Licensing and the Sharing of Knowledge in Research Joint Ventures, J. Econ. Theory, Vol. 56, pp. 43–69.] to situations where one cannot identify a ‘most knowledgeable' partner, by giving conditions under which there exist transfers implementing both efficient first best knowledge sharing and subsequent development efforts.     

Unbounded exchange economies with satiation: How far can we go?

We unify and generalize the existence results in Werner [Werner, J., 1987. Arbitrage and the existence of competitive equilibrium. Econometrica 55 (6), 1403–1418], Dana et al. [Dana, R.-A., Le Van, C., Magnien, F., 1999. On the different notions of arbitrage and existence of equilibrium. Journal of Economic Theory 87 (1), 169–193], Allouch et al. [Allouch, N., Le Van, C., Page Jr., F.H., 2006. Arbitrage and equilibrium in unbounded exchange economies with satiation. Journal of Mathematical Economics 42 (6), 661–674], Allouch and Le Van [Allouch, N., Le Van, C., 2008. Erratum to “Walras and dividends equilibrium with possibly satiated consumers”. Journal of Mathematical Economics 45 (3–4), 320–328]. We also show that, in terms of weakening the set of assumptions, we cannot go too far.     

The impact of positive property tax differentials on the timing of development

To date, few empirical studies have focused on the location decision by residential developers in response to changes in the property tax. Based on a dynamic time-to-development model by Turnbull, this paper finds, using 17 years of parcel level data from Saint Louis County, Missouri, that higher than average tax rates increase the time-to-development for vacant parcels by between 4 and 11%, all else equal. Additionally this paper finds that the tax differential effect is cumulative, resulting in about a 20% increase in the time-to-development for the parcel facing the average number of years with a higher than average rate. These results support the analytical results by both Turnbull [Turnbull, G.K., 1988. The effects of local taxes and public services on residential development patterns. Journal of Regional Science, 28 (4), 541–562.] and McMillen [McMillen, D.P., 1990. The timing and duration of development tax rate increases. Journal of Urban Economics, 28, 1–18.] that the property tax can distort residential capital markets leading to inefficient urban growth, or sprawl.     

基于参数空间的ST-ECM模型的协整检验问题研究

在非线性平滑转移误差修正模型（ST-ECM）的协整检验中,由于存在未识别参数而使协整检验统计量构造困难,同时由于目前文献普遍使用的泰勒展开近似法并不能精确替代原始非线性模型,从而导致协整检验统计量功效较低。本文首先在遍历未识别参数的参数空间的基础上构造了ST-ECM模型协整检验的supF统计量,推导了supF统计量的极限分布并说明了其收敛性质。接着,蒙特卡洛仿真模拟结果显示,supF统计量在ST-ECM模型协整检验中具有良好的检验水平和功效,且supF统计量的功效明显优于EG统计量、F*NEC统计量和inft统计量。最后,本文对亚洲六个国家的利率期限结构预期假说进行了验证,结果表明中国、新加坡和泰国三个国家的利率期限结构预期假说成立且存在非线性调整效应,supF统计量较其他统计量具有更高的检验功效。     

E-stability and stability of adaptive learning in models with private information

The paper demonstrates how the E-stability principle introduced by Evans and Honkapohja [2001. Learning and Expectations in Macroeconomics. Princeton University Press, Princeton, NJ] can be applied to models with heterogeneous and private information in order to assess the stability of rational expectations equilibria under learning. The paper extends already known stability results for the Grossman and Stiglitz [1980. On the impossibility of informationally efficient markets. American Economic Review 70, 393–408] model to a more general case with many differentially informed agents and to the case where information is endogenously acquired by optimizing agents. In both cases it turns out that the rational expectations equilibrium of the model is inherently E-stable and thus locally stable under recursive least squares learning.     

Effects of simplicity and discipline on operational flexibility: An empirical reexamination of the rigid flexibility model

This study empirically tests the rigid flexibility model proposed by Collins and Schmenner [Collins, R.S., Schmenner, R.W., 1993. Achieving rigid flexibility: factory focus for the 1990s. European Management Journal 11 (4), 443–447]. It investigates relationships between flexibility performance and adoption of simplicity and discipline programs in manufacturing. The research replicates the study by Collins et al. [Collins, R.S., Cordon, C., Julien, D., 1998. An empirical test of the rigid flexibility model. Journal of Operations Management 16 (2–3), 133–146] with some modifications, including the use of a broader international database, the assessment of both technology and organizational programs, and the testing of the moderating role of dedicated line layout on the relationships between simplicity, discipline and flexibility. Analysis of data from 285 manufacturers of fabricated metal products, machinery, and equipment from 14 countries indicates that simplicity and discipline related positively to performance in product customization, volume flexibility, mix flexibility, and time to market, and that some of these relationships were more positive in high volume processes than in low volume processes. The results provide empirical validation to the rigid flexibility model in an international manufacturing context.     

Economic geography and endogenous determination of transport technology

This paper studies the interdependence of economic geography and transport technology. A two-region model is used to obtain the conditions for the modern transport technology to be adopted in an economy. In particular, the impact of economic geography upon the adoption of the modern technology is examined. Furthermore, I discuss what combination of economic geography (symmetric or core–periphery pattern) and transport technology (traditional or modern technology) is to be realized in an economy.     

Back to the Future: Implications for the Field of HRM of the Multistakeholder Perspective Proposed 30 Years Ago

Thirty years on from the seminal works on human resource management (HRM) by Beer et al., we examine how the subject has developed. We offer a normative review, based on that model and critique the assumption that the business of HRM is solely to improve returns to owners and shareholders. We identify the importance of a wider view of stakeholders to practitioners and how academic studies on the periphery of HRM are beginning to adopt such a view. We argue that the HRM studies so far have given us much valuable learning but that the subject has now reached a point where we need to take a wider, more contextual, more multilayered approach founded on the long‐term needs of all relevant stakeholders. The original Beer et al. model remains a valuable guide to the next 30 years of HRM. © 2015 Wiley Periodicals, Inc.     

An integrative model of effort propensity

Over twenty years ago, Mitchell [Mitchell, T.R. (1982) Motivation: New directions for theory, research, and practice. Academy of Management Review, 7:80–88.] called for research which integrates and competitively tests the multitude of motivation theories competitively. Yet, with few exceptions, theories of motivation tend to be narrow in focus. However, many motivation theories incorporate similar predictor variables such as job satisfaction, perceived equity, and organizational commitment, suggesting that theory integration is warranted. In this paper, several literatures are reviewed which deal with employee effort at different levels (e.g., withholding effort, offering extra effort). “Effort propensity” is offered as an appropriate integrating variable, and an integrative model of effort propensity which pulls these various literatures together and stimulates the type of research described by Mitchell [Mitchell, T.R. (1982) Motivation: New directions for theory, research, and practice. Academy of Management Review, 7:80–88.] is proposed.     

Coalitional games with veto players: Consistency, monotonicity and Nash outcomes

Following Dagan et al. [Dagan, N., Volij, O., Serrano, R. (1997). A non-cooperative view on consistent bankruptcy rules, Games Econ. Behav. 18, 55–72], we construct an extensive form game for veto-balanced TU games in which a veto player is the proposer and the other players are responders. The set of Nash outcomes of this extensive form game is described, and compared to solutions of TU games such as the nucleolus, kernel and egalitarian core. We find necessary and sufficient conditions under which the nucleolus of the game is a Nash outcome.     

Inconsequential arbitrage

We introduce the concept of inconsequential arbitrage and, in the context of a model allowing short-sales and half-lines in indifference surfaces, prove that inconsequential arbitrage is sufficient for existence of equilibrium. Moreover, with a slightly stronger condition of nonsatiation than that required for existence of equilibrium and with a mild uniformity condition on arbitrage opportunities, we show that inconsequential arbitrage, the existence of a Pareto optimal allocation, and compactness of the set of utility possibilities are equivalent. Thus, when all equilibria are Pareto optimal — for example, when local nonsatiation holds — inconsequential arbitrage is necessary and sufficient for existence of an equilibrium. By further strengthening our nonsatiation condition, we obtain a second welfare theorem for exchange economies allowing short sales.Finally, we compare inconsequential arbitrage to the conditions limiting arbitrage of Hart [Hart, O.D., 1974. J. Econ. Theory 9, 293–311], Werner [Werner, J., 1987. Econometrica 55, abs1403–1418], Dana et al. [Dana, R.A., Le Van, C., Magnien, F., 1999. J. Econ. Theory 87, 169–193] and Allouch [Allouch, N., 1999. Equilibrium and no market arbitrage. CERMSEM, Universite de Paris I]. For example, we show that the condition of Hart (translated to a general equilibrium setting) and the condition of werner are equivalent. We then show that the Hart/Werner conditions imply inconsequential arbitrage. To highlight the extent to which we extend Hart and Werner, we construct an example of an exchange economy in which inconsequential arbitrage holds (and is necessary and sufficient for existence), while the Hart/Werner conditions do not hold.     

Multiple equilibria in two-sector monetary economies: An interplay between preferences and the timing for money

In this paper, we study the occurrence of local indeterminacy in two-sector monetary economies. We consider a general MIUF model with two alternative timings in monetary payments: the Cash-In-Advance timing, in which the cash available to buy goods is money in the consumers’ hands after they leave the bond market but before they enter the goods market, and the Cash-After-the-Market timing, in which agents hold money for transactions after leaving the goods market. We consider three standard specifications of preferences: the additively separable formulation, the Greenwood–Hercovitz–Huffman (GHH) (Greenwood et al., 1988) formulation and the King–Plosser–Rebelo (KPR) (King et al., 1988) formulation. First, we show that for all the three types of preferences, local indeterminacy occurs under the CIA timing with a low enough interest rate elasticity of money demand. Second, we show that with the CAM timing, although determinacy always holds under separable preferences, local indeterminacy can occur with GHH and KPR preferences. We thus prove that compared to aggregate models, two-sector models provide new rooms for local indeterminacy when non-separable standard preferences are considered.     

A new approach to estimating a profit frontier using the censored stochastic frontier model

The translog profit functional form is widely used to study technical efficiency for banks. Although this functional form is known as being flexible, it is not applicable to those banks incurring economic losses. The recently developed approach, i.e., the censored stochastic frontier model (CSFM), by Tsay et al. (2013) appears to be superior to existing approaches, since CSFM does not need to transform negative profit into positive profit before taking the natural logarithm. The transformation with respect to the profit variable tends to bias the parameter estimates of the profit frontier and the subsequent profit efficiency measure. We show that the parameter estimates of CSFM have the desirable statistical properties. Moreover, empirical results reveal that the mean profit efficiency of CSFM is more robust than those models using transformed profits across the sub-periods 1991–1998 and 1999–2009.     

Books Reviews

Legge, Karen. Human Resource Management. Rhetorics and Realities . Macmillan Press, 1995, pp. xviii + 385 (Keith Sisson).
Joss, Richard and Kogan, Maurice. Advancing Quality: Total Quality Management in the National Health Service . Buckingham: Open University Press, 1995, pp. 215 (Alan Tuckman).
Von Krogh, G. and Roos, J. Organizational Epistemology . New York: St Martin's Press, 1995, pp. 214, ISBN 0-312-12498-8 (pb) (Robert Chai).
Caves, Richard E. Multinational Enterprise and Economic Analysis (2nd Edition). Cambridge: Cambridge Surveys of Economic Literature, 1996, pp. 322, £14.95 (pb), ISBN 0 521 47858 8 (Peter Buckley).
Prais, S. J. Productivity, Education and Training. An International Perspective . The National Institute of Economic and Social Research, Cambridge University Press, 1995, pp. xiv + 138 (Sonia C. Carey).
Scarbrough, Harry (Ed.). The Management of Expertise . London: Macmillan, 1996, £14.99 (pb), 0-333-56870-2 (Andrew Sturdy).
Undy, R., Fosh, P., Morris, H., Smith, P. and Martin, R. Managing the Unions: The Impact of Legislation on Trade Unions' Behaviour . Oxford: Oxford University Press, 1996, pp. xvii + 318, £35 (hb) (John Kelly).
Wahl, Anna. Men's Perceptions of Women in Management . Fritzes: Stockholm, 1995, ISBN 38-30722-7 (Sandra Fielden).