• Journal of the Korean Operations Research and Management Science Society
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• 제20권2호
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• pp.159-178
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• 1995

Supervisory control is an approach based on formal language. it is used to model and control discrete event systems in which each discrete event process is represented as an automation. A supervisor is a generator that switches control patterns in such a way that a given discrete evenet process behaves in obedience to various constraints. A flexible manufacturing cell (FMC) is one of discrete evenet systems. Functions necessary for the operation of an FMC are characterized by operational components and informational compoments. The operational components can be modeled using the finite state machines and the informational components can be modeled using the abstract formalism which describes supporting operations of the cell controller. In this paper, we addressed function required for FMC control specification, software engineering aspects on FMC control based on supervisory control, a concept of event queue for resolving synchronization problem, and complexity reduction. Based on the mathematical model of an FMC. we synthesized the controller by integrating a supervisor for FMC with control specification that specifies event-driven operation of the cell controller. The proposed control scheme is stable mathematically so that the system always behaves on a controlled way even under the existence of uncontrollable events. Furthermore, using an event queue concept, we can solve a synchronization problem caused by the violation of instantaneity assumption of supervisory control theory in real life situation. And also, we can propotype a control software rapidly due to the modularity of the proposed control scheme.

• Korean Journal of Occupational Health Nursing
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• 제22권1호
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• pp.35-46
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• 2013

Purpose: The study aimed to identify influencing factors associated with the organizational commitment (OC) among hospital nurses. Methods: A descriptive correlational design was utilized. The subjects of this study were 447 female nurses working for over 6 months in Seoul. The study was based on the data from a self-reported survey using structured questionnaires. The data were collected from September 10 to 30, 2009 and analyzed using Pearson's correlation coefficients and stepwise multiple regression analysis. Results: The mean score of the OC was 2.45, slightly higher than the intermediate level. The mean score of the three-dimensional domain among the OC, affective commitment (AC) was 2.50, continuance commitment (CC) was 2.59, and normative commitment (NC) was 2.29. The influencing factors of nurses' AC were perceived organizational support (POS) (${\beta}$=.31, p<.001), supervisory trust, job burnout, nursing professionalism, and age, which accounted for 49.7%. The influencing factors of the CC were supervisory trust (${\beta}$=.20, p<.001), POS, and job burnout whereas the influencing factors of the NC were POS (${\beta}$=.40, p<.001), supervisory trust, nursing professionalism, and job burnout. Conclusion: It is necessary to develop supportive strategies that increase OC, which also improve the POS, nursing professionalism, and supervisory trust, and alleviate job burnout in hospital nurses.

• The Journal of the Korea Contents Association
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• 제17권9호
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• pp.619-636
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• 2017

This research presents the relationship building between the supervisor and supervisee through the supervision process in a narrative inquiry. The supervisory relationships of the supervisor A and supervisee B, and the effects they have on the relationship between the two are described in as factual terms as possible. The results imply that genuineness and openness are the core components of relationship. Especially, in the case of a highly hierarchical relationship, where it is often easy for the supervisor to employ hidden tactics, efforts on the part of the supervisor's endeavor to develop unconditional acceptance can be helpful in establishing a more open-minded attitude. As a result, the common view in the literature that attributes relationship hierarchy to cultural factors may need to be reexamined. This research provides evidence that in the case of supervision and training in counseling, establishing an environment of acceptance, trust and rapport can help advance the supervisory relationship to a less hierarchical form.

• Journal of the Korea Academia-Industrial cooperation Society
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• 제21권1호
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• pp.521-529
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• 2020

This paper attempted to empirically analyze whether or not ethical behavior at the individual level has a positive effect on both companies and employees. In addition, based on the social exchange theory, a hypothesis was established that perceived supervisory support has a positive moderating effect on the relationship between ethical behavior, job satisfaction, and job performance. As a result of analyzing a questionnaire given to 238 sales employees, It was first verified that ethical behavior by sales staff had a positive effect on job satisfaction and performance, as expected in the hypothesis. Second, the moderating effect of perceived supervisory support was significant only in the relationship between the ethical behavior of the salesperson and job performance. On the other hand, the moderating effect of perceived supervisory support on the relationship between ethical behavior and job satisfaction was not verified. Based on the results of this study, the implications and future directions of study are presented.

• Korean Journal of Air-Conditioning and Refrigeration Engineering
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• 제12권4호
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• pp.354-362
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• 2000

Optimal supervisory control strategy for the set points of controlled variables in the central cooling system has been studied by computer simulation. A quadratic linear regression equation for predicting the total cooling system power in terms of the controlled and uncontrolled variables was developed using simulated data collected under different values of controlled and uncontrolled variables. The optimal set temperatures such as supply air temperature, chilled water temperature, and condenser water temperature, are determined such that energy consumption is minimized as uncontrolled variables, load, ambient wet bulb temperature, and sensible heat ratio, are changed. The chilled water loop pump and cooling tower fan speeds are controlled by the PID controller such that the supply air and condenser water set temperatures reach the set points designated by the optimal supervisory controller. The influences of the controlled variables on the total system and component power consumption was determined. It is possible to minimize total energy consumption by selecting the optimal set temperatures through the trade-off among the component powers. The total system power is minimized at lower supply, higher chilled water, and lower condenser water set temperature conditions.

• THE INTERNATIONAL COMMERCE & LAW REVIEW
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• 제36권
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• pp.195-262
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• 2007

This paper attempts to assess the Basel Committee's bank supervisory standards and capital adequacy rules, and thereby rethink whether global convergence in banking regulation is desirable. To that end, it seeks to address the impetus for the creation of the Basel Committee, and explore driving forces behind the internationalization of bank regulatory and supervisory standards. Following the historical and theoretical analysis of the internationalization of bank regulatory standards, the movement toward global standards in banking is reviewed. More importantly, this paper seeks to explore the origins of the Basel Accord on bank capital adequacy. To do so, it largely relies on current theories on the process of negotiating the capital adequacy standards in the areas of political science and international political economy. At this point, this study takes a position as a break against the force of international market failure logic that has enjoyed an exceptionally positive reception among economists, political scientists, and legal experts. Nonetheless, it does not intend to freeze the international coordination and cooperation of banking regulation. Given the understanding of the politics behind the creation of the Basel Accord, this paper evaluates the Basel Accord of 1988 and the new capital adequacy framework(Basel II), and then moves beyond the assessment of the capital adequacy standards In doing so, this study draws lessons from Basel in search of a just world order in the global finance.

• Proceedings of the KOSOMBE Conference
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• 대한의용생체공학회 1997년도 춘계학술대회
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• pp.55-58
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• 1997

In this paper we reviewed and stated the present state of our team's research of the moving-actuator type total artificial heart (MA-TAH). Especially, this paper showed new direction of researches. The integrated research of battery, telemetry, TET is required. And the real-time supervisory of the state of hemodynamic variables and MA-TAH is also needed. These requirement made us to think the supervisory control system (SCS). As functional abilities of the SCS require very high computational cost, the digital signal processor is an appropriate choice for our need.

• Journal of the Institute of Electronics and Information Engineers
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• 제50권7호
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• pp.244-252
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• 2013

In this paper, we show that supervisory control theory of discrete event systems can be applied to analyze the problem of power in political economy. For this purpose, we introduce the decision mechanism of control inputs based on power, and the consequent behavior of a supervised system. Specifically, this paper presents the notion of power-controllability as a necessary and sufficient condition to achieve a common control objective of competing groups (local controllers). If the power-controllability is met, a modular system controlled by local controllers with power functions is not deviated from a common control objective of them.

• KSCE Journal of Civil and Environmental Engineering Research
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• 제14권5호
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• pp.1199-1208
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• 1994

In the country, supervision cost is being estimated by percentages of construction cost or cost plus a fixed fee without a reasonable standard. This type has no function for adjusting supervision cost according to variables, such as construction work complexity, extent of supervisory services, fluctuations in prices. In this study, an objective criterion to estimate supervision cost with improved supervisory services has been developed, in which adjusting functions as stated above should be properly considered. A comparative study of supervisory service systems in foreign countries and a survey through questionnaire were carried out for the study. An objective criterion from the results is proposed in the form of an expression or table.

• Journal of Mechanical Science and Technology
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• 제14권4호
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• pp.369-379
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• 2000

In industrial production-distribution systems, production and purchasing rates, associated inventories, and sales are very critical for the profits of each component in the system. The objective of this study is to investigate an effective information control scheme for a production -distribution system by automatic feedback control techniques. In this work, a dynamic control scheme that has an integrated -error with state-feedback and filtering (ISFF) is proposed as a new algorithm for a dynamic controller. Generalized formulations of the dynamic control are proposed in the continuous-time and discrete-time cases. A methodology for an evaluation of ISFF controller gains using the eigen structure property is presented. When an upper-limit is imposed on the production capability by available factory space and capital equipment, supervisory control is provided to avoid integrator-windup and deterioration of system performance.