Forthcoming and Online First Articles
Asian Journal of Management Science and Applications
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Asian J. of Management Science and Applications (5 papers in press)
Abstract: In some instances, existing methods for decomposing a time series into several components cannot capture cyclical components that contain long-period cycles. We propose a systematic methodology to overcome this problem. In the proposed hyper-trend method, we assume that part of the cyclical variation is included in the estimate of the trend component. We then capture the remainder of the cyclical variation by re-decomposing the estimate of the trend component. The average coefficient of determination is introduced to evaluate the decomposed results. An overall procedure for applying the proposed approach is developed, and the performance of the proposed approach is demonstrated by analysing 20 commercial sales time series and 30 business cycle time series.
Keywords: seasonal adjustment; trend-cycle decomposition; hyper-trend method; state space model; Kalman filter; economic time series; commercial sales; business cycles; DECOMP; stationarity of a time series.
Modeling and simulation of organizational knowledge creation process with consideration of dialogue
by Morihiko Iinuma, Naoki Shiba, Miyako Homma, Toshio Saito
Abstract: In adaptation to a changing environment, innovation is essential for continuing existence of an organization. Of the many approaches available for research on innovation, in the present study, it is performed taking the perspective of knowledge management, in which the central point of discussion is organizational knowledge creation, here considered and modeled with basic recognition of the important role of dialog between organization members, a role comprising the two phases of knowledge creation at the individual level and diffusion of the created knowledge. Exploratory investigation by simulation on factors that affect organizational knowledge creation shows that a tradeoff exists between knowledge creation at the individual level and diffusion of the created knowledge, and that skillful maintenance of the balance between them is a key task in knowledge management.
Keywords: knowledge management; organizational knowledge creation; individual knowledge creation; knowledge diffusion; innovation; agent-based simulation.
Building a performance indicator to investigate the robustness of water supply utilities in Japan
by Yuji Kawase, Yusuke Maeno, M.L.U.K. Piyasena, Tatsuo Oyama
Abstract: In this study, we build a work performance indicator (WPI) for quantitatively measuring the performances of water supply utilities in Japan. The WPI is defined from three different perspectives: management, facility/equipment, and operations. It can be used to measure the robustness of a water supply network system. Based on actual data expressing the work performances of Japanese water supply utilities from 1980 to 2018, we illustrate the numerical results of the WPIs, so as to determine their regional characteristics. We apply statistical data analysis techniques (such as a cluster analysis and principal component analysis) to calculate the WPIs, and investigate the historical and regional characteristics and trends of water supply utilities in Japan during the investigated period. These approaches can be applied to design and improve natural disaster mitigation policies, such as those focusing on earthquakes in Japan.
Keywords: water supply utility; work performance indicator; WPI; robustness; water supply network; statistical data analysis; cluster analysis; principal component analysis; PCA; Japan.
Organisational culture and shared leadership in Chinese enterprises
by Cong Xu
Abstract: The current study investigates the relationship between performance-based organisational culture (i.e., innovation-oriented culture, outcome-oriented culture, and detail-oriented culture) and three dimensions of shared leadership (i.e., collective-achievement leadership, mutual-engagement leadership, and cohesive-support leadership). Multiple regression results based on the data obtained from 12 Chinese firms demonstrated that innovation-oriented culture was significantly related to collective-achievement leadership and cohesive-support leadership; outcome-oriented culture was significantly related to mutual-engagement leadership and cohesive-support leadership; and attention to detail was significantly related to mutual-engagement leadership. It was also hypothesised that there would be moderating effects of firm ownership and location in Chinese markets. However, the moderating effects were not as strong as expected. The results provide novel insights into theories and practise of shared leadership and organisational culture in China.
Keywords: shared leadership; organisational culture; Chinese markets; firm ownership; firm location.
A study of optimal assignment with different workers' capacities for each process in a reset limited-cycle problem with multiple periods
by Jinyu Zhang, Hisashi Yamamoto, Jing Sun, Yasuhiro Kajihara
Abstract: In production activities, the result and efficiency of a certain period of a production cycle are influenced not only by the risks that exist in the current period, but also by the risks that existed in the previous ones. So we constructed a model called a reset limited-cycled model with multiple periods to assume evaluation of the impact risk. Because of the variability of the capacities of workers, the processing time is different among workers. In this paper, we focus on the fact that workers have different processing capacities for different processes under the reset limited-cycled model with multiple periods. Based on that assumption, we propose a new formulation of the expected risk (cost). Furthermore, some theorems of the rule of the optimal worker assignment that minimises the total risk, when there are two types of workers' capacities for each process, are proposed.
Keywords: limited-cycle problem; multiple periods; processing capacities; optimal assignment; expected cost.