The impacts of Radio Frequency Identification (RFID) technology on supply chain costs

Radio Frequency Identification (RFID) is regarded as a promising technology for the optimization of supply chain processes since it improves manufacturing and retail operations from forecasting demand to planning, managing inventory, and distribution. This study uses a simulation model to calculate the expected benefits of an integrated RFID system on a three-echelon supply chain obtained through performance increases in efficiency, accuracy, visibility, and security level. The study investigates how the product value, lead time, and demand uncertainty affect the performance of the integrated RFID supply chain in terms of cost factors at the echelon level.     

Continuous-time mean-variance portfolio optimization in a jump-diffusion market

In this paper, we take up an approach of (Lindberg, in Bernoulli, 15(2):464–474, 2009) who introduced a new parameterization of the Black–Scholes model that allows for an easy solution of the continuous-time Markowitz mean-variance problem. We generalize the results of (Lindberg, in Bernoulli, 15(2):464–474, 2009) to a jump-diffusion market setting and slightly correct the proof and the assertion of the main result. Further, we demonstrate the implications of the Lindberg parameterization for the stock price drift vector in different market settings, analyse the dependence of the optimal portfolio from jump and diffusion risk and finally indicate how to use the method. We particularly also show how the optimal strategy can be obtained with the restricted use of historical data.     

Tourist-income multipliers for Turkey

Differential tourist-income multipliers were calculated for Turkey using conventional input-output methodology and standard linear equations. High values were obtained for the ratio multipliers demonstrating the importance of secondary effects to the Turkish economy. Results indicated that tourists who spent more on retail purchases and less on hotels and restaurants, had a greater propensity to generate more direct and induced income. Information on relative impacts and touristspending patterns could therefore be useful to the policy makers.     

How do integrated quality and environmental management practices affect firm performance? Mediating roles of quality performance and environmental proactivity

Based on a sample of 208 Turkish firms, this paper investigates the integration of two management systems, quality management and environmental management, and explores the effect of this integration on firm performance. First, a conceptual framework was developed, relying on the premises of the resource‐based view. Second, mediating roles of quality performance and environmental proactivity were examined on the association between integrated quality and environmental management systems and firm performance. Among the underlying trends, both quality performance and environmental proactivity were found to fully mediate the relationship between integrated quality and environmental management and firm performance.     

Unintended Effects of Targeting an Environmental Rebate

When designing schemes such as conditional cash transfers or payments for ecosystem services, the choice of whom to select and whom to exclude is critical. We incentivize and measure actual contributions to an environmental public good to ascertain whether being excluded from a rebate can affect contributions and, if so, whether the rationale for exclusion influences such effects. Treatments, i.e., three rules that determine who is selected and excluded, are randomly assigned. Two of the rules base exclusion on subjects’ initial contributions. The third is based upon location and the rationales are always explained. The rule that targets the rebate to low initial contributors, who have more potential to raise contributions, is the only rule that raised contributions by those selected. Yet by design, that same rule excludes the subjects who contributed the most initially. They respond by reducing their contributions even though their income and prices are unchanged.     

Financial reporting transformation: the experience of Turkey

From the viewpoint of a developing country which is in need of foreign capital and foreign investments to finance its economic growth, the need for high quality financial information has vital importance. The need for IFRS in Turkey was brought up by the same reasons as a developing country and as an emerging market. With the internationalization of capital markets and the increased volume of international investments, companies functioning in Turkey needed to provide high quality financial information to access financial resources. Furthermore, internationally accepted and reliable financial information is also needed for the overseas customers of the domestic companies. Another reason facilitating the need for IFRS is Turkey's candidation for European Union membership.This paper attempts to explain the development process of accounting standards around the world and its practical results in a developing country: Turkey. Within this context, brief information is given about the structure of International Accounting Standards Board (IASB), and adoption process of IFRS in Turkey. During this adoption process, Turkey encounters several complications such as complex structure of the international standards, potential knowledge shortfalls, and difficulties in application and enforcement issues. This paper explores these difficulties and shares the Turkish experience from a viewpoint of a regulator and an academician, and discusses the proper and consistent way implementing a “Principle Based” IFRS in Turkey.     

Stochastic convexity in dynamic programming

Summary. This paper explores sufficient conditions for a continuous stationary Markov optimal policy and a concave value function in stochastic dynamic programming problems. Also, the paper addresses conditions needed for the differentiability of the value function. The paper uses conditions such as first order stochastic dominance, second order stochastic dominance and concave stochastic dominance that are widely applied in economics. Received: February 23, 2001; revised version: May 19, 2002 RID="*" ID="*" I am deeply indebted to Prajit Dutta for patient assistance and advice. This paper has benefited from discussions with Tsz Cheong Lai, Tackseung Jun, Werner Stanzl and Satyajit Bose as well as feedback from an anonymous referee.     

Patterns of innovation and intra-industry heterogeneity in Turkey

This study investigates the patterns of innovation in Turkey and its primary aim is to examine the intra-industry heterogeneity in innovative activities. For this purpose double-level factor analysis is performed and the resulting factor scores are used in the subsequent cluster analyses. Four distinct innovation patterns, which may be interpreted as ingredients of different technological regimes, are identified. A taxonomy of innovative firms is also constructed by grouping firms according to their innovation characteristics and, to the authors’ knowledge, this is the first empirical classification study in Turkey. These results indicate that industries differ in terms of innovative activities. However, industries are not dominated by a single technological regime. On the contrary, five technological regimes were observed in almost all sectors. Building upon these facts, it can be speculated that sector-specific conditions determine the extent of intra-industry heterogeneity.     

Minimum wage is efficient wage in Turkish labor market: TAR–cointegration analysis

This study has two main purposes. First one is the necessity of taking minimum wages into account, if there is a purpose to analyze the relationship between wages and productivity in an economy which has high unemployment rates and informal employment. Second one is about the analyzing method of this relationship. We choose TAR cointegration analysis for this relation. First step of this analysis is testing for stationarity of the variables. However the low power of traditional unit root tests is examined and proved in many studies but not taken into account in TAR cointegration studies in literature. This study shows that traditional unit root tests are unfavorable for the variables which have TAR structures. Because of this shortcoming of traditional unit root tests, these results must be supported with TAR unit root tests.     

Bargaining: separately or together?

This paper explores conditions under which economic agents will want to bargain collectively instead of individually with a common third party—when, for example, two firms (or unions), who are bargaining with the same, indispensable, outside party, will want to merge and bargain as one. I use a non-cooperative sequential bargaining model to analyze this question. Previous work has shown that agents prefer to bargain collectively if they are substitutes for each other in production. This result, however, depends on an exogenously fixed sequence of bargaining. I allow the bargaining sequence to be determined endogenously and investigate how incentives for collective bargaining vary with heterogeneity when delay is costly. The previous results are not robust when the agents are substitutes. In particular, substitute agents prefer individual to collective bargaining if they are heterogeneous and sufficiently patient. In the presence of transaction costs, substitutability of agents is no longer the sole determinant of collectivization. Rather, the degree of heterogeneity in production, in conjunction with the degree of substitutability between agents determine the incentives for collective action.