The storage of goods plays a crucial role in warehouse management systems. Although this operation is often considered simple, it is in fact complex, due to the volume of products, the uncertainty in demands, and the rapid customer service response that the market requires. Moreover, the optimization of logistical resources to maintain an efficient operational flow, such as the allocation of storage spaces, often requires complex decisions. In this paper, we analyze academic contributions on the storage location assignment problem published between 2005 and 2017. The literature is classified according to the solution methods, objectives, and related considerations. Suggestions are also provided for future research.

This paper discusses an integrated model of batch production and maintenance scheduling on flow shop with two deteriorating machines producing single item to be delivered at a due date. The model describes the trade-off between production and maintenance costs as the production run length increases on two machines. The objective function of the model is to minimize the total cost consisting of in process and completed part inventory costs, setup costs, preventive & corrective maintenance costs and rework costs on two machines. The step-wise optimization algorithm is developed to solve a mixed integer quadratic programming. Comparison with the practice and the model sensitivity analysis are demonstrated to clarify how the algorithm works.

jective FLP. Generally, quantitative factors are considered as material handling cost, time, etc., and qualitative factors are considered as closeness rating, hazardous movement between the facilities, etc. For solving and optimizing two or more objectives, two methods are available. First is weight approach method and second is non-dominated sorting method. In the former method, suitable weights are given to each objective and combined in a single objective function; while in later method, the objectives are defined separately and by making comparison of the solutions on the non-dominance criteria, best Pareto-optimal solutions are obtained. In this paper, equal area multi-objective FLPs which are formulated as quadratic assignment problem (QAP) are considered and optimized using biogeography based optimization (BBO) algorithm and non-dominated sorting BBO (NSBBO) algorithm. BBO is one of the efficient metaheuristic techniques, developed to solve complex optimization problems. Computational results of BBO algorithm using weight approach illustrate its better performance compared to other methods while solving multi-objective FLPs. Furthermore to obtain Pareto optimal solutions, NSBBO algorithm is implemented.

With the intention of addressing product quality, machine reliability, and acceptable service level issues in real fabrication systems, this paper studies joint effects of stochastic breakdown, backorder of permissible shortage, rework, and scrap on the optimal stock replenishing policy. A decision model is developed to solve the problem, which consists of mathematical modeling, formulations, and optimization method in order to help analyze the problem, derive the system cost function, and find the optimal replenishment cycle length decision. Applicability of the research results are demonstrated by a numerical example. The proposed decision model enables production managers to not only determine the optimal stock replenishing policy, but also reveal individual impact and/or joint effects of stochastic breakdown, defective rate, backorder of allowable shortage, rework, and scrap on the replenishing decision. With such an in-depth study, diverse system characteristics become available for managerial decision-making.

Word of mouth (WOM) advertisement plays an essential role for business development. WOM helps consum-ers become familiar with new products and services, the quality of services and promotes different choices with possibly better features. This paper examines the effect of word of mouth advertisement in medical treatments in Batavia hospital in west Jakarta, Indonesia. The study examines the effects of WOM on patient’s fulfillment, satisfaction and re-admission in this hospital. The study designs a questionnaire and distrib-utes it among some patients who are waiting to receive medical care at this hospital. The survey only concentrates on patience who used the medical treatment for at least two times. Structural equation modeling is used to examine the hypotheses of this survey. The results indicate that WOM could increase the patience’s awareness and positively influence on patience’s choice for getting more treatment.

In this VUCA world, much can be achieved when one is open to learning. The purpose of this study is to ana-lyze the impact of organizational learning culture, employee commitment, and job satisfaction towards motivation to transfer learning. The data are collected by distributing 200 questionnaires for employees working in Jakarta area. The method used to do the analysis is by using a multilinear regression. Based on the result, organizational learning culture and job satisfaction had significant impacts to motivation to transfer learning. Meanwhile, employee commitment does not have significant effect on motivation to transfer learning, however, it has an impact on the gender, age, and length of work.

This study addresses the issue of rising turnover intention in Pakistan’s aviation industry and provides a theoretical foundation for lowering the turnover intention with the help of consumer citizenship behavior (CCB) and consumer-based brand equity by using the S-O-R theory. The data is collected with the help of structured personally administered questions following the intercept approach. Three most frequently used international airports which are located at Lahore, Karachi and Peshawar are targeted for data collection and total of 388 Pakistani flyers who traveled to international destinations participate in the survey. In addition, this study uses SmartPLS 3.2.7 for data analysis with the help of a two-stage approach. The results state that CBBE had a significant effect on CCB and CCB had a significant impact on turnover intentions. Furthermore, CCB plays the role of an important mediator for the effect of customer based brand equity (CBBE) on turnover intention. These results enhance existing literature about lowering the turnover intention with the help of CCB and CBBE in aviation industry of Pakistan. The study also highlights that managers and practitioners should improve customer engagement for exhibiting CCB to reduce customer turnover intentions in the aviation industry.

This paper deals with the problems faced with the designing and planning of a sporting fixture considering correct referee assignments. A non-linear binary program model is proposed to solve the problems, which aims to minimize the sums of the differences that exist between the requirements of each match and the quality of the referee assigned achieving the design of the most adequate referee for each match. The efficiency of the proposed model is proved using some real data obtained from various fixtures for sports such as soccer, volleyball, and basketball. The mathematical model is solved by using CPLEX 12.7.0., which allows the automatic linearization of the problems. The results obtained demonstrate the efficiency of the proposed methodology for tackling problems, as well as its extension to other sporting disciplines, which require a similar type of planning. Similarly, given the robust nature of the proposed model, it is possible to implement other objective functions in accordance with the requirements of each league.

This study analyzes the effects of intangible resources on competitive advantage in the banking sector of Nigeria. The marketing related, technological and structural dimensions of intangibles are employed while differentiation and cost leadership strategy are used as components of competitive advantage. The population of the study consists of bank employees of ten deposit money banks in Benin City, Nigeria. A sample size of 300 is adopted for this study. The instrument is a modified 35 item structured questionnaire previously validated by other studies. The study uses confirmatory factor analysis and structural equation technique to evaluate the validity of the measurement and structural model. The hypothesized relations are tested using regression analysis. The results confirm that marketing related, technological and structural categories of intangible resources promoted competitive advantage. It is recommended that bank management should promote the development of their intangible resources.

This study aims to develop a measurement scale for Supply Chain Integration (SCI) and Firm Performance (FP) in Jordanian SMEs. The study instrument was developed based on the previous studies and the survey included 284 companies in Jordan. A sample of 263 responses were used for exploratory analysis. Results show that the 46-item instrument was loaded on four factors. During this phase, the measurement scale was purified to 36 items, and characterized with a high degree of reliability. The results were confirmed using confirmatory factor analysis and showed that the 36-item measurement model met the empirical requirements namely, convergent, construct, and discriminant validity. The fitness indicators test for the model shows that it is applicable in SMEs companies’ environment in Jordan. The study presented implications for decision-makers in SMEs companies. The limitation of this study was presented which were relied on to develop directions for future research.