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崔宗植 忠州大學校 1968 한국교통대학교 논문집 Vol.2 No.-
In this paper I made an attempt to examine the development process of the automobile by dividing into four parts ; the primitive period automobile, the steam engine period, the primary internal Combustion engine period, and the modern period. On the other hand, as for running resistance, I tried to describe the measurement of the resistances which the automobile was supposed to receive while running by classifying all of the resistances into four kinds ; the ordinary revoling resistance, the accelerating resistance, the sloping resistance, the air resistance.
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최종식,정웅,이창민,박성혁,박현경,김명천,고영관 대한응급의학회 2014 大韓應急醫學會誌 Vol.25 No.6
Purpose: The purpose of this study is to determine the factorsrelated to delayed answer in interhospital transfer inorder to reduce the time required to determine interhospitaltransfer and to provide optimal care for emergency patients. Methods: This was a retrospective observational study. Data on request for interhospital transfer of emergencypatients were collected from July, 2013 to October, 2013 inan urban emergency department with approximately40,000 annual visits. Time required for determination,receptionist’s department and position, decision maker’sdepartment and position, patient’s general characteristics,and requesting hospital’s characteristics were collected. The SPSS package with Student’s t-test, Chi-square, onewayANOVA, and multivariate logistic regression analysiswas used for analysis of the data. Results: When the decision maker’s department wasemergency medicine, the time required to determine interhospitaltransfer was shortest (p<0.001), and position ofemergency medicine member was non-significant(p=0.109). When the decision maker’s department wasnon-emergency medicine, specialist had a shorter timerequired to determine interhospital transfer than resident(p<0.001), but influence of the position of receptionist wasnon-significant. Conclusion: Decision maker for interhospital transferrequest should be an emergency medicine member. If onecannot make a decision, one should consult a specialist,not a resident. Hospitals should implement an organizedsystem to shorten the time for interhospital transfer.
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유압윈치 가속수명시험을 위한 가속인자 결정에 관한 연구
최종식,이기천,이용범,박종원,류경하,강봉규 한국신뢰성학회 2019 신뢰성응용연구 Vol.19 No.4
Purpose: Testing a hydraulic winch system by matching the field operating conditions is difficult due to the many operating factors that the system must control simultaneously. This study used different approaches to mimic the lifetime of the winch system to reduce the test time. Methods: We investigated the load condition of a hydraulic winch under field conditions and analyzed its failure mode and mechanism. In addition, we established a reliable assessment system for field conditions that could be reproduced and tested in the laboratory. Results: We applied an acceleration life test to overcome the difficulties of test time that could not be solved by the failure test. In addition, we established a reliability evaluation system for field conditions that could be reproduced and tested in a laboratory. Conclusion: The acceleration factor was calculated using the force to pull the hydraulic winch from the wire, and the accelerated life test time was applied to perform a reliability assessment.
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에너지 하베스팅(Energy Harvesting) 기술의 軍 전력지원체계 도입 및 적용방향 연구
최종식,최북진 大田大學校 社會科學硏究所 2017 社會科學論文集 Vol.36 No.1
This research is to appreciate the necessity of introduction of necessity of ENERGY HARVESTING into the Army through technological trend and established cases and to suggest on application of the ENERGY HARVESTING. Being a country of getting 96 % of her energy resource from imports, Republic or Korea is required to achieve energy security securing the future energy and early security of eco-friendly, also, steadily increasing combatants demand for power-source and batteries to support all sorts of portable communication devices of the Army, furthermore, measures are needed to decrease combat soldiers carrying load. Local energy resource institute, government offices, and corporation are putting their efforts to secure the fist-step technology ENERGY HARVESTING and are achieving some tangible outcomes such as getting some related patents. Adding to that, introduction of ENERGY HARVESTING to the Army is necessary for realization of the successful to the future Army soldiers. individual combat system and for the activation of clean energy program supporting the current national policies Accordingly, this article is designedto share information with Logistics person in the Army on ENERGY HARVESTING, technological trend, necessity of the introduction of ENERGY HARVESTING into the Army, adaptation of ENERGY HARVESTING to the Army individual combat system, and other force support system and to awaken the necessity and the importance of R / D of ENERGY HARVESTING technology and introductio of ENERGY HARVESTING into the Army.
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