Parallel Consultant-Guided Search with Crossover

Consultant-guided search (CGS) is a recent metaheuristic method. This approach is an algorithm in which a virtual person called a client creates a solution based on consultation with a virtual person called a consultant. In this study, we propose a parallel CGS algorithm with a genetic algorithm’s crossover and selection, and calculate an approximation solution for the traveling salesman problem. We execute a computer experiment using the benchmark problems (TSPLIB). Our algorithm provides a solution with less than 3.3% error rate for problem instances using less than 6000 cities.     

Factors affecting customers’ continued intentions to use Islamic banks

No study has concurrently verified the religious motives and attitudes that affected the customers’ continued intentions to use Islamic banks along with the importance of other factors and attributes associated with conventional banking services. This study examines factors affecting customers’ attitudes toward Islamic banks based on data obtained from interview surveys conducted in Jordan. The findings show that customers’ religious motives, their evaluations of a bank's compliance with Islamic law as an indication of the customers’ religious attitudes toward Islamic banks, and the ease of access to credit had a positive effect on the customers’ intentions to continue using Islamic banks. More specifically, the findings suggest that customers who continuously transact with Islamic banks more strongly emphasize religious attitudes, rather than credit constraints (such as the degree of access to credit) and religious motives. This study further reveals that religious attitudes, rather than mere religious motives, were the primary criterion for the customers’ continued intent to use Islamic banks, especially when considering the strong effect of their religious attitudes toward Islamic banks.

     

Strategic safety stock placement in supply chain design with due-date based demand

We present a strategic safety stock placement model in supply chain design for assembly-type product with due-date based demand, where demand data are based on dates when company has to ship to customers rather than order receiving dates. We formulate multi-echelon stock placement by guaranteed-service model with demand propagation equations through backward explosion, where demand can be either stationary or nonstationary. The stock placement model is incorporated into network design problem and its optimization procedure is provided. We show effectiveness of the optimization procedure and other significant features of the model through numerical examples of a machinery product supply chain.     

How Do Local Labor Markets and Human Capital Affect Employment Outcomes after Job Loss?

This article uses the Longitudinal Employer‐Household Dynamics to evaluate how local industry concentration affects earnings losses for displaced workers. “Concentrated industries” are those industries with a high employment share within a labor market. This article compares earnings changes between displaced workers and job stayers within concentrated industries to the same within less concentrated industries. A separate comparison is made based on the expected level of job availability within the labor market. The findings show that earnings changes for displaced workers relative to job stayers are 7–13% higher within concentrated industries when job loss occurs during periods of high job availability. Earnings changes are 4.5–6% lower, however, when the same comparison is made during periods of low job availability. When firms are hiring workers, they are more likely to hire those previously employed within the same industry, since these workers have accumulated more relevant human capital.     

Corporate governance quality: Trends and real effects

This paper constructs a composite index of corporate governance quality, documents its evolution during the 1994–2003 period in selected emerging and developed economies, and assesses its impact on growth and productivity of the economy and its corporate sector. Our investigation yields three main findings. First, corporate governance quality in most countries has overall improved, although in varying degrees and with a few notable exceptions. Second, the data exhibit cross-country convergence in corporate governance quality with countries that score poorly initially catching up with countries with high corporate governance scores. Third, the impact of improvements in corporate governance quality on traditional measures of real economic activity—GDP growth, productivity growth, and the ratio of investment to GDP—is positive, significant and quantitatively relevant, and the growth effect is particularly pronounced for industries that are most dependent on external finance.     

Supply shocks and the interdependence of macroeconomic stability under flexible exchange rates

This paper analyzes the effects of a change in the monetary policy of a large economy on the macroeconomic stability of a small open economy with high dependence on imported intermediate goods. The analysis is carried out using the Taylor framework where the money supply rule is specified by the degree of monetary accommodation of price shocks. A supply shock to the large country is transmitted as both demand and supply shocks to the small country. A shift toward less monetary accommodation by the large country is shown to increase both price and output instability in the small country through the supply side linkage, while it may enhance price or output stability through the demand side linkage. Simulation results for Germany and Japan suggest that the supply side effect on price stability is important and that the effect on output stability depends crucially on the importance of trade in goods between the large country and the country in question.