• 제어로봇시스템학회논문지
• /
• 제17권7호
• /
• pp.714-719
• /
• 2011

This paper proposes a scheme for distributed load balancing in mobile communication networks based on supervisory control framework. Using load information exchanged with neighboring cells, the "supervisors" that reside in the base stations distribute load among cells by controlling handover parameters in a distributed manner. The supervisors are designed so that the load difference among neighboring cells are kept under a pre-defined value. Results from systematic analysis and simulation indicate that our scheme effectively balances traffic load among cells and reduces call blocking rate of the overloaded cells.

• 제어로봇시스템학회논문지
• /
• 제15권4호
• /
• pp.396-399
• /
• 2009

This paper presents the notion of time-coobservability as a core condition far the existence of a decentralized supervisor achieving a given language specification in a timed discrete event system (TDES). A TDES is modeled by the framework of Brandin & Wonham [5], and the decentralized supervisory control architecture presented is extended from the untimed architecture of Yoo & Lafortune [1]. To develop the time-coobservability of a language specification, specifically this paper presents the C&P time-coobservability and D&A time-coobservability in the consideration of the event tick and forcing mechanism of decentralized supervisors.

• 대한안전경영과학회지
• /
• 제16권1호
• /
• pp.29-35
• /
• 2014

The purpose of this study is to investigate the problem on safety and health training system in Occupational Safety and Health Act(OSHA) and to find countermeasures to improve it in the construction industry. The questionary survey was done on aiming at tracing the legal drawbacks of safety and health training system. The questionary was prepared to target on site workers, management supervisors, and safety supervisors in various construction sites. After analyzing the answers from the survey, realistic and optimal countermeasures on derived problems were proposed. These should be included on the next revision of OSHA.

• 대한간호학회지
• /
• 제16권3호
• /
• pp.31-37
• /
• 1986

The purpose of this study is to develop a ratio scale measuring organizational charateristics in nursing. 599 staff nurses working at 10 educational hospitals in Seoul were participated during the period from July 1 to July 31, 1985. Subjects were instructed to rate at one to five points likert type scale according to the level of positive characteristics affecting the nursing organizational effectiveness. As a result of factor analysis given to 50 items with varimax rotation and rearrangement on the asis of factor loading 0.3, there are 4 factors consisted of 33 items presented: factor 1 : leadership of head nurses and interaction(11 items) factor 2 : leadership of supervisors and top managers(11 items) factor 3 : interaction with supervisors(5 items) factor 4 : organizational climate(6 items) Reliability of the factors were tested by Cronbach's Alpha, and the result was α=0.67∼0.84 Further studies are needed to identify the relationship between this tool and the effectiveness of various organization in nursing.

• 아태비즈니스연구
• /
• 제6권2호
• /
• pp.35-61
• /
• 2015

This study deals how employees' perceptions of being supported by their organizations and supervisors may lead to organizational commitment and this commitment affects turnover intention and organizational citizenship behavior in the context of Thai industrial firms. The sample consists of Thai employees working in manufacturing firms which Koreans operate in Thailand. In line with social exchange theory, this study indicated that employees who felt that their organizations and supervisors valued their contribution and cared about their well-being would be more likely to have lower level of turnover intention and higher level of organizational citizenship behavior. Moreover, it was found affective and normative commitment partially mediated the effect of perceived organizational and supervisor support on organizational citizenship behavior. This study enhances our understanding about the roles of organizational commitment in the Thai workplace, and provides some practical implications how to manage Thai employees.

• 인터넷정보학회논문지
• /
• 제19권4호
• /
• pp.95-105
• /
• 2018

As the IT industry has developed, the frequency of mobile communication usage has increased sharply. Mobile communication has many advantages such as improving work performance, communication beyond time and local constraints, and rapid and vast amounts of information exchange. However, mobile communication also allows supervisors to give their subordinates work at any time. Thus, mobile communication may also have a negative impact on workers' stress levels during non-work time. This study examined required time, urgent business, personal engagement, and trivial matters as sub-dimensions of mobile communication messages that workers could receive during non-work time. Further, the nature of the relationship between team leaders and members explains how these messages may increase the stress levels of workers. Supervisors should prohibit the use of such mobile communication, and efforts should be made at the enterprise level. Through this research, we aim to explain the dual nature of mobile communication, and understand how to optimize the usage of this innovative technology

• 대한안전경영과학회:학술대회논문집
• /
• 대한안전경영과학회 2011년도 춘계학술대회
• /
• pp.143-151
• /
• 2011

Reviews indicated that supervisory feedback provided to workers is the most effective intervention to change performance in organizational settings. However, supervisors themselves hardly receive feedback on their own behaviors. This study implemented self-management technique to improve supervisory behaviors at a construction site. Self-management in the current study consisted of goal setting, self-monitoring and providing reinforcers for two supervisory behaviors; (1) conducting safety observations and (2) interacting with workers for safety improvement. Two supervisors severed as participants. An AB within-group design was adopted. After baseline (A), self-management technique was implemented (B). Results suggested that self-management was effective in increasing the two supervisory behaviors. Moreover, the increased supervisory behaviors were associated with improvement in workers' safety performance.

• Asian Journal of Innovation and Policy
• /
• 제3권1호
• /
• pp.72-93
• /
• 2014

This study analyzed the factors that influence the research productivity of 236 graduate students who are funded by the Global Ph.D. Fellowship Program of the National Research Foundation of Korea. Research productivity was measured by the number of SCI publications, and the explanatory factors are the demographic factor, the financial factor, the reputation of institutions and the supervisor factor. This study included 2 indices such as the reputation of institutions and the research productivity of supervisors to check the halo effect unlike other studies. Results are as follows: 1) no gender difference, 2) better performance by younger age group, 3) no difference even if the students are additionally funded by other research support programs, 4) no halo effect by the reputation of institution but rather better performance from low ranked universities, 5) and a positive halo effect by supervisors.

• 대한안전경영과학회지
• /
• 제9권1호
• /
• pp.187-195
• /
• 2007

There are many Korea companies who are introducing many kinds of management renovation methods in order to attain more management achievement. So many personnels under CEO are trying to change themselves to fit those kinds of management renovation methods. Now, all kinds of books for supervisors have published, but it is not easy for those supervisors to understand those books as those books do not fit for their own companies situation. The best management methods in the best companies in U.S.A. actually can not be well introduced in Korea. So, the management methods should be changed with the environment's changing. Therefore, the company management is the process to suit the continue changing environment.

• 제어로봇시스템학회논문지
• /
• 제20권10호
• /
• pp.995-1001
• /
• 2014

In the aftermath of the financial crisis of 2008, while numerous members of the general public lost their homes and jobs, many of the largest banks held responsible for the crisis have been successfully rescued by bailouts. In this paper, through the analysis of income inequality, unemployment, tax cuts, and bailouts, we show that the interests of the general public are different from the interests of politicians and bankers. While the small elite group of politicians and bankers could set the deregulation policies with inordinate power based on full information, most people were ignorant and unconcerned about the policies, and hence did not oppose them. Specifically, we model the credit change in the financial markets of the United States by a finite state machine, and design three local supervisors representing three groups with different interests. It is then shown that the deregulation policies were adopted according to the difference of the supervisors' powers.