A new interpretation on the optimal density regulations: Closed and open city

Optimality of urban density regulations differs between a closed city and an open city. We demonstrate, by examining optimal floor area ratio (FAR) regulation, how to control building size to mitigate traffic congestion externality in a monocentric city. Results show that a closed city requires not only downward adjustment to the market density at boundary locations using maximum FAR regulation but also upward adjustment at central locations using minimum FAR regulation. On the other hand, an open city requires only the former. The common practice of imposing only maximum FAR regulation is thus insufficient for closed cities although it is effective for open cities.     

Employment with connections: Negative network effects

In less developed countries, it is widely observed that employers hire workers through employee referrals. In this paper, we show an extension of this kind of networks that may decrease applicants' payoffs while a diversification of the networks can raise referred applicants' payoffs. We also discuss the effect of the extension of interlinked contracts on farmers' wages.     

Cordon Pricing and Land‐Use Regulation

This study explores the simultaneous imposition of cordon pricing and land‐use regulations in a continuous and closed monocentric city with homogeneous households. Results reveal the optimal level of a single cordon toll and its location and the optimal floor area ratio (FAR) regulation, clarifying what distortions remain in the existence of cordon pricing and FAR regulation. Among other results, this paper shows that, with an optimal cordon toll, FAR regulation should alternate between a minimum and a maximum regulation, both inside and outside the cordon line.     

Residential land use with demographic dynamics of young and old generations

Populations of many countries are expected to decrease rapidly, with a simultaneous increase in the proportion of elderly people. These population dynamics will affect residential location patterns of young and old people because of their different preferences for local (zonal) amenities. Using an overlapping generations model in a closed city with two zones, this paper demonstrates how younger and older generations reside in the two zones and classifies the residential patterns into three patterns. Results of analyses underscore how the three residential patterns arise according to the respective population dynamics and zone amenities. Furthermore, by exploring the equilibrium utility paths of young and old people for each residential pattern, we show that the change in the population dynamics can produce an unfair change over generations with different birthdates.     

Pricing Discrete Barrier Options Under Stochastic Volatility

This paper proposes a new approximation method for pricing barrier options with discrete monitoring under stochastic volatility environment. In particular, the integration-by-parts formula and the duality formula in Malliavin calculus are effectively applied in pricing barrier options with discrete monitoring. To the best of our knowledge, this paper is the first one that shows an analytical approximation for pricing discrete barrier options with stochastic volatility models. Furthermore, it provides numerical examples for pricing double barrier call options with discrete monitoring under Heston and λ-SABR models.     

Foreign Aid and Recurrent Cost: Donor Competition, Aid Proliferation, and Budget Support

Recent empirical studies reveal that effectiveness of aid on growth is ambiguous. The authors consider aid proliferation—excess aid investment relative to recurrent cost—as a potential cause that undermines aid effectiveness, because aid projects can only produce sustainable benefits when sufficient recurrent costs are disbursed. They consider the donor's budget support as a device to supplement the shortage of the recipient's recurrent cost and to alleviate the misallocation of inputs. However, when donors have self-interested preferences for the success of their own projects over those conducted by others, they provide insufficient budget support relative to aid, which results in aid proliferation. Moreover, aid proliferation is shown to be worsened by the presence of more donors.     

Asymptotic Expansion for Term Structures of Defaultable Bonds with Non-Gaussian Dependent Innovations

In the context of credit risk, the term structure models that have been studied in the literature are typically models driven by Brownian motion or standard jump diffusions. These models provide coherent modeling that is straightforward to implement. To make these models more flexible, we develop a discrete-time approximation of a continuous-time Vasicek term structure analysis with non-Gaussian and dependent innovations. Higher-order asymptotic theory enables us to evaluate the term structures of defaultable bonds. Numerical examples show that the effects of non-Gaussianity and the dependency of both risk-free rate and default process strongly influence the evaluation of defaultable bonds. As an application, we estimate the parameters of our proposed models for the Japanese corporate credit default swap market.     

Basic psychological need satisfaction and affect within the leisure sphere

Research on leisure and well-being in non-Western contexts is rare. Our study addresses this issue by investigating whether satisfaction of three basic psychological needs – autonomy, competence and/or relatedness – influences four types of affective well-being – high-arousal positive (HAP) affect, low-arousal positive (LAP) affect, high-arousal negative (HAN) affect and/or low-arousal negative (LAN) affect – within the leisure sphere. Telephone survey data were collected from 583 Hong Kong Chinese employees. Structural equation modelling indicated that (1) autonomy, competence and relatedness need satisfaction were all significantly and positively correlated with HAP affect; (2) autonomy need satisfaction alone was significantly and positively related with LAP affect; and (3) autonomy need satisfaction alone was significantly and negatively associated with both LAN and HAN affects. Taken together, these results suggest that fulfilment of basic psychological needs, especially the need for autonomy, contributes to people’s overall affective well-being, within the leisure sphere. We discuss our findings in terms of two frameworks: basic psychological needs theory and the DRAMMA leisure model. We also explicate the practical implications of our study and provide future research recommendations.     

An approximation formula for normal implied volatility under general local stochastic volatility models

We approximate normal implied volatilities by means of an asymptotic expansion method. The contribution of this paper is twofold: to our knowledge, this paper is the first to provide a unified approximation method for the normal implied volatility under general local stochastic volatility models. Second, we applied our framework to polynomial local stochastic volatility models with various degrees and could replicate the swaptions market data accurately. In addition we examined the accuracy of the results by comparison with the Monte‐Carlo simulations.     

Economic and management implications of technological advances in the world steel industry

This article reviews recent and prospective major technological innovations in the world steel industry and assesses their probable effects on the production, cost, and export capabilities of established as well as of newly developing steel producing areas.