• The Journal of Korean Institute of Communications and Information Sciences
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• v.14 no.4
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• pp.369-373
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• 1989

This paper investigates average access times on eight asynchronous priority levels of FDDI MAC protocol with parameters on offered loads, message sizes, and number of stations. In case of parameter with offered loads, higher priority levels exhibit similar variances and in case of parameter with message sizes and number of satations, higher priority levels exhibit almost invariables but as increase of message sizes, increase only a small amount of access time on the other hand, as number of stations increase, average access times decrease little by little. But in case of lowest priority level. average access times decrease little by little. But in case of lowest priority level, average access times exhibit relatively large variances about above three parameters.

• Journal of the Korean Operations Research and Management Science Society
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• v.33 no.2
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• pp.115-135
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• 2008

An interesting problem in capacitated supply chains is how to guarantee customer service levels with limited resources. One of the common approaches to solve the problem is differentiating service depending on customer classes. High-priority customers receive a better service at the cost of low-priority customers' service level. One of common criteria to determine a customer's priority in practice is whether he has made a reservation before arrival or not. Customers with a reservation usually receive service based on the time the reservation was made. We examine the effect this advance information of customer arrival has on customer service levels. We show the trade-offs between the leadtime and other system characteristics such as the proportion of high-priority customers. when the service level is high. We also suggest how to differentiate service using the asymptotic ratio of the service levels for both types of customers.

• The Transactions of The Korean Institute of Electrical Engineers
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• v.58 no.2
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• pp.407-414
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• 2009

The foundation fieldbus(FF) is one of the fieldbuses most widely used for process control and automation, In order for system designer to optimize medium management, it is imperative to predict transmission delay time of data. In a former research, mathematical modeling to analyze transmission delay of FF token-passing system has been developed based on the assumption that a device node has only one priority data(1Q model), From 1Q model, all of the device nodes, which are connected on the FF system, are defined priority level in advance, and as system operates, data are generated based on given priority level. However, in practice, some non-periodic data can have different priority levels from one device. Therefore, new mathematical model is necessary for the case where different priority levels of data are created under one device node(2Q model). In this research, the mathematical model for 2Q model is developed using the equivalent queue model. Furthermore, the characteristics of transmission delay of 2Q model which is presented in this paper were compared with 1Q model. The validity of the analytical model was verified by using a simulation experiment.

• Korea Journal of Hospital Management
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• v.16 no.2
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• pp.78-97
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• 2011

The purpose of this study is to analyze activating factors of medical tourism at Busan, and then decide on priority on the factors. As research methods, this study deduced priority of specialists' opinions by AHP analysis technique through structuralized questionnaire on the medical tourism's factors having been suggested from existing prior studies. The analysis results were same as followings. First, as a result of analysis on the main criteria, relative levels of importance were appeared high such as 'competitiveness', 'policy assistances from the government', 'medical care's infrastructure', and 'connectedness with regions' in order. Second, as a result of integrated results analyzing detailed criteria on the main evaluation standards, relative levels of importance were appeared high such as 'medical quality', 'health-related institution's improvement', 'medical infrastructure', 'medical charge', 'tourism-related institution's improvement', 'convenience', 'medical cooperation possibilities', and 'local industry compliance' in order. In conclusion, it is judged that activation of medical tourism shall be propelled after considering relative levels of importance on many policies or activating factors same as suggested in this study.

• The Transactions of the Korea Information Processing Society
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• v.1 no.4
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• pp.490-501
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• 1994

In this study the problems of cell marking method used in the field of ATM network traffic control are presented. Also an extended cell marking method considering the user level priority is proposed. The conventional traffic monitoring schemes set the CLP bit of a cell to 1 only under the circumstance of the violation of traffic contract. It causes that the number of low level cells increases and the levels of cells are lowered regardless of the user level priority. The three level priority control method combining FCI bit with CLP bit has also been proposed. It divides CLP=0 cells into two levels. Consequently, the proposed method preserves more cells in high level than the conventional one and the real loss of high level cells can be reduced. The performance of the proposed scheme has also been analyzed by the PBS(partial buffer sharing) with two thresholds for the proposed three levels. The result shows that the PBS with two thresholds can give more efficient control than the scheme with no priority, or the PBS with one threshold.

• The Journal of Korean Physical Therapy
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• v.32 no.4
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• pp.266-271
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• 2020

Purpose: A survey was conducted to investigate the role, priority, and awareness of physical therapists in the community care system for the elderly. Methods: Nine hundred ninety-three physical therapists were invited to an online survey from 1st to 30th June 2020. Results: While the awareness of physical therapists for the community care system for the elderly was found to be low, the role priority and performance ability were found to be high. Fall training scored the highest for the job duties of physical therapists, and functional training scored the highest for the performance ability of physical therapists. For the role priority by the education status regarding the community care system, the participants who received the education program showed higher scores in the performance ability than those who did not. For the role priority and performance ability according to the education levels, higher education levels resulted in higher scores in both outcomes. Regarding the clinical experience, low scores were found in the participants with less than five years of experience. Conclusion: Physical therapy establishes itself as an essential area of expertise in the community care system for the elderly. Therefore, these results can be utilized in developing a model for Korean community care for the elderly.

• Journal of the Korean Home Economics Association
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• v.35 no.6
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• pp.143-155
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• 1997

The purpose of this study is to compare the differences of clothing behavior by the level of self-monitoring under given social situations. The result of this study is drown from the analysis of the survey, gathered from the 522 female students of universities reside in Seoul, by using the method of convenience sampling. The statistical methods used to test the data were MANOVA and chi-square test. The results of this study can be summarized s follows; first, as a result of analyzing the differences of situational self-image pursuits among situations depending individual's self-monitoring levels, it was found that the pursuits changes among situations regardless of the self-monitoring levels. Thus, this hypothesis could not be verified. Second, as a result of analyzing the changes of priority of clothing selection factors among situations depending on individual's self-monitoring levels, it was found that the priority factors changed among situations regardless of the self-monitoring levels.

• The Transactions of the Korea Information Processing Society
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• v.3 no.1
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• pp.191-199
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• 1996

In this paper, We assume that the closed computer system model composed of multiprocessor system is analyzed by BCMP queueing network theory with priority levels. In this system that contains terminals, processors and I/O devices, We show maximum throughput and the number of active terminals in the optimum multiprogramming levels. It is compared the performance with the other. In the result, it is obtained the optimum number of processors and active terminals. Therefore, the system model consisted of the optimum number of processor and multiprogramming level m is analyzed by the servers with a priority level. Each server is applied to the type of server which is characterized terminal, processor I/O device etc.. This model is analyzed by the server with a probability ditribution. Ideal state is proposed by the modeling for priority levels. Finally, we try to increase the performance in overload system.

• Journal of Fisheries and Marine Sciences Education
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• v.18 no.2
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• pp.172-182
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• 2006

The aims of this study is to suggest how the port specialists think the priority of container feeder port development in Korea. To illustrate the ideas regarding a container feeder port development, 56 detailed attributes were identified both from the previous studies and from brainstorming port professionals. And these were grouped into 5 criteria by 'KJ method' and made into 4 levels hierarchy structure. AHP technique identifies the relative weights of each levels and trends of the preference of port specialists from 6 alternatives. As a result, a feeder port development priority in Korea has been proposed.

• Journal of Korean Academy of Nursing
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• v.27 no.3
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• pp.550-562
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• 1997

Since patients with strokes occupy a high priority among patients for home nursing, the development of guidelines for such nursing is required and the needs of these patients should be reflected in the guidelines. Therefore, this study was done to identify the content and levels of home nursing for patients with strokes and to utilize the data in developing the most effective home nursing guidelines for these patients. The level of A, D. L. and the ability to control upper extremities were measured, and through a questionnaire. the needs for home nursing and related variables were also evaluated. The subjects for the study were 121 patients, 58 inpatients and 63 home care patients who had had a Stroke. Data collection was done from September 1996 to January 1997. The collected data were analyzed utilizing SPSS /PC, and the results are as follows : 1. Home nursing need of inpatients The priority order of home nursing needs for inpatients was : "Training in emergency treatments and how to cope with a stroke"(2.28+1.06), next, "Explanation of diets as limited or recommended", and last, "Nursing care for sleeping Problems". 2. Home nursing need home of patients The priority order of home nursing needs for home patients was : "Care for the paralyzed side" (2, 89+.34), next, "Maintenance of right posture and how to change position" (2.87+.34), and last, "Counseling on sex". 3. Comparison of the levels of home nursing needs between in patients and home patients The results of analyses of home nursing needs according to causes were grouped into seven categories : and t-tests of the seven categories showed significant differences between the two groups in all categories, that is, the level of home nursing needs were significantly higher for home patients than for inpatients in all categories of home nursing. 4. Level of home nursing needs by characteristics The variables that have affected the level of home nursing needs for these patients were sex, profession, level of education, accompanying diseases, paralyzed position. A.D.L. levels and ability levels in coordinating upper extremities. There variables, displayed a reverse correlation with the level of home nursing needs, and the degree of correlation was high. In conclusion, the above results, show there were differences in the priority order of home nursing needs between inpatients and home patients : but the content of home nursing needs wanted by these patients was similar. Meanwhile, the levels of demand for home nursing was exceptionally higher on the part of home patients than inpatients. Although it is realized that nursing guidelines for home nursing needs in all items need to be developed, there is also a necessity to guidelines in accordance with priority orders, and with consideration of the factors that affect the level of home nursing needs. of the factors that affect the level of home nursing needs.