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On the Design of Optimal Response Time in Computer Terminal Networks
An Young-Ki Military Operations Research Society of Korea 1976 한국국방경영분석학회지 Vol.2 No.1
A terminal response time analysis for a general class of terminals-to-computer subsystem is presented in this paper. On the point of the front view, it should be considered for R.O.K. Military Defense to set up the communication network in order to facilitate for the currency of the information and the data communication system. The model used to study is based on the advanced data communications system in which terminals are connected to Terminal Control Units(TCU) that are in turn connected to local Front-End Processor(FEP). The line control procedures used to interface a TCU and an FEP may be half-duplex Binary Synchronous Communication(BSC), half-duplex Synchronous Data Link Control(SDLC), or full-duplex SLDC. This paper will contribute to facilitate the initial phase of system design and configuration for the Military Defense Communication Network System in future.
TBSS를 이용한 커피전문점의 고객감성이 추천의도와 지속이용의도에 미치는 영향 - 경인지역을 중심으로 -
박영기 ( Park¸ Young-ki ) 한국호텔리조트학회 2021 호텔리조트연구 Vol.20 No.5
Therefore, the purpose of this study is to examine the effect of customer emotion of coffee shops using TBSS on recommendation intention and continuous use intention, and to present an efficient operation plan for coffee shops using TBSS by verifying the interaction between these factors. and practical implications. The collected data was collected using the SPSS 23.0 statistical program, and frequency analysis was conducted for the basic data of the usage survey and demographic characteristics. In addition, factor analysis was performed on the items of coffee shop's TBSS, customer sentiment, recommendation intention, and continued use intention, and reliability analysis was performed to test the reliability of the items. As a result of the analysis, first, convenience, serviceability, visibility, and economic efficiency of coffee shops using TBSS were found to have an effect on customer sensibility. Second, convenience, serviceability, visibility, and economic feasibility of coffee shops using TBSS were found to have an effect on recommendation intention. Third, convenience, serviceability, visibility, and economic feasibility of coffee shops using TBSS were found to have a nutritious effect on continued use intention. Fourth, customer sensibility, that is, the customer's comfortable feeling, pleasant and clean as well as friendly, and the warm feeling of the staff were found to affect the recommendation intention.
Effect of Workload on Musculoskeletal Degeneration
Youngki Kim,Jongeun Kim,Dongmug Kang,Soohong Park 대한인간공학회 2014 大韓人間工學會誌 Vol.33 No.6
Objective: The aim of this study is to investigate the effect of workload on musculoskeletal degeneration. Background: It is important that workers maintain a health body for a long time as a measure of aging workers. In order do so, it is necessary to find out if workload can effect on musculoskeletal degeneration. Method: Epidemiological studies on workload or occupation and disc degeneration, osteoarthritis of knee were identified through database and bibliography searches. Results: Epidemiological studies showed that workload certainly effect on musculoskeletal degeneration. But we couldn"t know which of individual factors and occupational factors further contribute to the musculoskeletal degeneration. And we could find that studies on workload and genetic factors were very few. In addition, there was also very few studies that it was possible interaction between individual factors as obesity and occupational factors as heavy manual lifting. Conclusion: Our reviews suggest that it need to conduct study between workload and genetic factors for musculoskeletal degeneration. This further study can identify attributable risk of workload for musculoskeletal degeneration, and contribute to the measure of aging workers. Application: This paper can help to establish research plan for the measure of aging workers.
Case Analysis of the Effects of Nucleoplasty and Chemonucleolysis on the Intervertebral Disc
Youngki Hong 대한스포츠물리치료학회 2018 정형스포츠물리치료학회지 Vol.14 No.2
Purpose: This study was evaluated the effects of nucleoplasty and chemonucleolysis, as interventional treatments for herniated intervertebral disc disease, on spinal tissues. Methods: Nucleoplasty using plasma beam and chemonucleolysis with collagenase were conducted on the spinal motion segments that were dissected from of human cadaver spine under fluoroscopic guidance. After the procedure, the intervertebral discs were transected, and the changes in gross findings were examined. Subsequently, the influence of the procedure on the nucleus pulposus, annuls fibrosus, and endplate was analyzed through a pathologic examination. Results: Nucleoplasty was confirmed to eliminate the local range of tissues in nucleus pulposus according to the procedure tract and to not affect other tissues. In chemonucleolysis, we found that collagenase diffused from the surgical site within the nucleus pulposus and was not present in the annulus fibrosus and endplate. Conclusions: The clinically-used interventional treatments that were investigated here were not found to do not cause additional damage to areas other than those targeted.