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(A) Study on the Moving Source Tracking Used CTA in a Range Independent Environment
Full text linkA Study on the Moving Source Tracking Used CTA in a Range Independant Environment
The objectives of Matched Field Processing(MFP) include source detection and localization or the estimation of parameters in the ocean waveguide. It is generalized beamforming method which uses the spatial complexities of acoustic fields in the ocean waveguide.
In this thesis, MFP for locating an acoustic point source in the ocean using vertical array is extended to moving source tracking problem. For this purpose, The simulation experiments were attended by using a shallow water environment. The replica field were calculated by KRAKEN acoustic propagation model. For simulation of moving source, the following assumptions are made. (1) Source trajectories distributed in fixed region, (2) source depth is fixed and move in straight lines, (3) source speed and source level is constant. In these assumption, moving sources are modeled as sequential point sources on rectangular grid. This study used Bartlett, MV, RMV methods for matching processor and applied conventional tracking algorithm(CTA).
Based on simulation experiment, the CTA results show that all of matching processor accurately estimated to moving source tracking. Consequently, this thesis have showed that MFP can be applied to moving source tracking problem
(A) Study on the Transient Phenomenon During Abnormal Condition of A. C. Generators
Full text linkIt is common knowledge amongst electrical and marine engineers that short-circuit in electrical system may cause large mechanical torque on generator and prime mover. However, It is not so widely known that faulty synchronizing of generators may cause even higher torques than that of short-circuit. In this study, the transient phenomenon related to the short-circuit and parallel running of synchronous generators are compared and analysed. Computer simulation results show importance of synchronizing when parallel running of synchronous generators. Maximum transient torque and current take place in case of 120˚phase difference parallel running of generators and may develop higher torque than short- circuit according to a condition of synchronizing. When synchronizing in power system using only two generators higher torque and current are occurred to Master, but using multimachine system higner torque and current are occurred to Slave. Short-circuit of marine generator is not frequently happened but faulty synchronizing takes place frequently, therefore, it is necessary to consider these phenomena for designing generators.그림 목차 = ⅲ
Abstract = ⅴ
기호 설명 = ⅶ
제 1 장 서론 = 1
제 2 장 교류발전기 개요 = 3
2.1 발전 원리 = 3
2.2 교류발전기의 출력 = 4
2.3 전기자반작용 = 5
2.4 누설리액턴스 = 6
2.5 동기리액턴스 = 6
2.6 교류발전기의 분류 = 6
2.7 교류발전기의 병렬운전 = 7
2.8 부하 분담 = 8
제 3 장 교류발전기 과도현상 해석 = 10
3.1 기계변수에 의한 교류발전기의 수학적 모델 = 10
3.2 등가모델 = 14
3.3 교류발전기 병렬운전시의 수학적 모델 = 22
제 4 장 과도현상 모의실험 및 검토 = 28
4.1 3상 접지(Three-Phase Earth) = 28
4.2 2상 접지(Two-Phase Earth) = 32
4.3 1상 접지(One-Phase Earth) = 35
4.4 무부하 운전중 병렬투입시의 과도현상 = 38
4.5 부하 운전중 병렬투입시의 과도현상 = 47
제 5 장 결론 = 61
참고문헌 = 6
A Study on Competitiveness of Container Ports in International Logistics Strategies : With the Focus on Southeast Asian Countries
Full text linkThe 20th century in international logistics was an era of multi-modal transport with the focus on maritime transport. The 21st century in international logistics can be said an era of 4PL(fourth party logistics) equipped with ITC(information technology and communications) as well as maritimeㆍair transport. Rapid development in shippingㆍport industries plays a leading role in the advancement of international logistics and foreign trade that greatly affect the relevant operation types. These circumstances have expedited changes in the new international maritime order as well as international logistics strategies in recent years.
Since most traffic volume in export and import depends on maritime transport in international logistics, shippingㆍport in the 21st century can also be significant factors to determine the state of logistics. Several trends have emerged: ship-building technology influences ship size and capacity, port facilities and wharves are being expanded, port management is more globalized, cargo handling equipment is increasingly effective, the WTO is more widely accepted and fast development of information technology is benefiting from further development. We are entering into an era of sky-high competition where maintaining competitive edge is key to survival.
As a result, every port in the world has been considering initiating new strategic plans in an effort to become one of the international hub bases. Many countries in Asia have already set up large scale investment plans, while leading world shipping lines. In this connection, they have approached the competition, capturing a lion's share of container throughput in Asia, which is rapidly increasing.
Thus, ports orienting to be a hub-port in the 21st century must specialize in both transport and information communications in which globalization has been taking place rapidly far and wide.
The purpose of this study is to identify and evaluate the competitiveness of ports in Southeast Asia, which play a leading role in basing the hub of international logistics strategies as a countermeasure in changes of international logistics environments. This region represents most severe competition among Mega hub ports in the world in terms of container cargo throughput at the onset of the 21st century.
The research method in this study accounted for overlapping between attributes, and introduced the HFP(Hierarchical Fuzzy Process) method that can perform mathematical operations. It was combined by a literary survey related to logistics, competition, shippingㆍport, and interviews by specialists in relevant fields. Research methodology was applied to develop a model. The HFP(Hierarchical Fuzzy Process) method is known as having great advantages over the higher frequency of adoption. It proved to be the most appropriate model in light of least cost, reduction of operation time in the research as well as the superiority of the resultant research accuracy and modeling.
The scope of this study was strictly confined to the ports of Southeast Asia, which have been enjoying the number one position in import and the number two position in export in the intra-Asia container volume. These ports cover the top 100 of 350 container ports that were presented in Containerization International Yearbook 2002 with reference to container throughput. The ports that qualify are Bangkok, Laem Chabang, Manila, Penang, Port Klang, Tanjung Priok, Tanjung Perak, and Singapore.
The results of this study show Singapore in the number one position, followed by Manila(2), Port Klang(3), Tanjung Priok(4), Tanjung Perak(5), Bangkok(6), Laem Chabang(7) and Penang(7).
Compared with major ports in Korea (after getting comparative ratings and applying the same data and same evaluation structure), the number one position goes to Singapore and then Busan(2) and Manila(2), followed by Port Klang(4), Tanjung Priok(5), Tanjung Perak(6), Bangkok(7), Inchon(8), Laem Chabang(9) and Penang(9).
In terms of the main contributions of this study, it is the first empirical study to apply the combined attributes of detailed and representative attributes into the advanced HFP model which was enhanced by the KJ method to evaluate the port competitiveness in the Southeast Asian region. Particularly, there has never been a single case even introducing a more practical and sophisticated idea as presented in this study. Some of the studies done earlier by other researchers used to show great interest in East Asia's major ports and analyze a certain port preference tendency. Up-to-now, none have comprehensively conducted researches with sophisticated port methodology that has discussed a variety of changes in port development and terminal transfers of major shipping lines. Moreover, through the comparative evaluation between major ports in Korea and those in Southeast Asia, the presentation of comparative competitiveness for Korean ports is a great achievement in this study.
In order to reinforce the results of this study, further research (including cost factors which could not be applied to modeling the subjective ports by lack of consistently quantified data in Southeast Asia) should be pursued. The evaluation structure could be subdivided with more extensive and precise criteria. In computing the value of Fuzzy evaluation by representative attributes, it is recommended that factoring work on qualitativeㆍquantitative attribution be carried out precisely. Further studies would be needed to reflect the respondents' accuracy of the questionnaires in modeling the evaluation of port competitiveness. These limitations should be overcome by future research that will enhance the competitiveness of individual enterpriseㆍindustry, authority, and consequently that of a nation.목차
Abstract = vi
第1章 序論 = 1
第1節 問題提起 = 1
第2節 硏究의 目的 및 節次 = 6
第3節 硏究의 方法 및 構成 = 8
1. 硏究의 方法 = 8
2. 硏究의 構成 = 9
第2章 理論的 背景 = 11
第1節 港灣競爭力 評價 = 12
1. 港灣競爭力의 評價모델 = 12
2. 港灣競爭力 構成要素 = 14
第2節 先行硏？솨쭌？ = 18
1. 硏究方法論의 選擇 = 18
2. HFP方法의 優秀性 = 20
3. 硏究方法論(HFP: Hierarchical Fuzzy Process) = 22
第3章 아시아 지역 國際 로지스틱스 環境變化와 評價對象港灣의 現況分析 = 38
第1節 아시아지역 國際 로지스틱스 = 39
1. 아시아지역 國際 로지스틱스 體制의 發展 = 39
2. 아시아地域 主要 港灣의 發展 = 42
3. 아시아의 港灣 로지스틱스 = 45
第2節 東南亞 評價對象 港灣의 現況分析 = 59
1. 방콕(Bangkok) = 59
2. 람차방(Laem Chabang) = 63
3. 마닐라(Manila) = 69
4. 페낭(Penang) = 77
5. 포트크랑(Port Klang) = 81
6. 탄중프리옥(Tanjung Priok) = 87
7. 탄중페락(Tanjung Perak) = 92
8. 싱가포르(Singapore) = 96
第4章 對象港灣의 競爭力 評價 = 105
第1節 港灣競爭力 評價要素의 抽出 = 105
1. 港灣競爭力의 主要 構成要素 = 105
2. 港灣競爭力 構成要素의 代表屬性 = 109
第2節 港灣競爭力 評價要素別 Data 抽出 = 112
1. 物動量 - 取扱物動量 = 112
2. 港灣施設 - 岸壁길이 = 113
3. 港灣立地 - 定期船社 就航數 = 114
4. 서비스水準 - 港灣情報 處理서비스 = 114
第3節 階層퍼지分析法(HFP)의 適用 = 116
1. 評價項目別 重要度 _w(·)와 相互作用 係數 의 算出 = 116
2. 퍼지測度値 _g(·) 算出 = 119
3. 評價項目의 퍼지評價値 h(·)의 算出 = 119
第4節 評價結果의 解釋 = 121
1. 港灣別 評價結果 = 121
2. 適用結果의 統合評價 = 124
3. 評價結果의 解析 = 126
4. 綜合評價 = 133
第5章 結論 = 135
第1節 硏究結果의 要約 = 135
第2節 硏究結果의 示唆點 = 139
第3節 硏究限界와 向後 硏究方向 = 140
參考文獻 = 141
I. 國內文獻 = 141
II. 外國文獻 = 14
An Empirical Study on the Strategic Development of University Service Marketing -Primarily on "H" National University
Full text linkIn this study, I have considered the strategy of Service Marketing for the survival of University in the Higher Education Service Market of Korea which is sharply changing.
In particular, our higher education institutions meet the situations which can not help changing the marketing strategy for the demander from the service strategy as the supplier. It is not easy for the higher education institution to acquire the new student of University differently from the past days. That is to say, the entrance of Foreign University into the domestic market is scheduled to be legislated, together with the natural reduction of University candidates. Also, the new education center is newly set up and the wage difference from the University Graduate become reduced, and thus the age in which it is good for us not to go to the University usually has been introduced to us.
In case of the American Universities which confronted to these environments from the early times, they overcame these crises under the concept of University Marketing. That is to say, the University introduces the marketing concept and creates the new education market and then makes the new demand.
Accordingly, in this study, I recognize which University Marketing is the quick way of accomplishing the development of University, and then confirm the theory of University Marketing of the preceding study and then positively analyse the marketing method which focused on the National "H" University.
In the object of National "H" University Students, first, we examined the difference of recognition degree per each college and grade on the factors of University Marketing Mix Strategy. Secondly, the importance in the recognition of University Preference Factors was confirmed through the factory analysis. Thirdly, I positively analysed the degree which these factors have the effect upon the University Service Quality and Pride.
And, as the sufficient interchange value is given to the target market through the differential strategy, the National "H" University will be able to be out of the crisis of Higher Education Institution of Korea. Moreover, this marketing positioning will be concrete through the marketing audit and will be able to be accomplished effectively by the minute marketing strategy.
So, in this study, I would like to suggest the essential necessity of introducing the University Marketing and its application method on the premise that the University must be changed to the thoughts toward the marketing and the system for the customers in the survival competition of University Market which the University can meet soon.
Also, in this study, I have researched into the applicable possibility of University Organization based on the theoretical consideration of Non-Profit Organization Marketing as a part of Non-Profit Marketing among the marketing area. In the part of University Marketing, I suggested the introduction of University Marketing as the situation analysis around the University and as the alternative of the first problems of university, in consideration with the speciality owned by the university.
And then, in this study, I suggested the management course of University Marketing as the setting-up of marketing organization, marketing audit, market setting-up, analysis of interchange relationship and plan & control method, establishing the concrete marketing management directions and evaluating the necessity after the marketing committee is established.목차
Abstract = 1
제1장 서론 = 1
제1절 연구의 배경 = 1
제2절 연구의 목적 = 2
제3절 연구의 방법과 구성 = 3
제2장 대학마케팅의 이론적 배경 = 4
제1절 대학마케팅의 정의 = 4
제2절 대학마케팅의 특성 = 5
제3절 대학마케팅의 위치 = 7
제4절 대학마케팅의 적용과정 = 10
1. 대학마케팅의 적용을 위한 선행과제 = 10
2. 마케팅 기구의 설치 = 11
제3장 대학마케팅 전략 = 17
제1절 환경분석 = 17
제2절 마케팅 감사 = 21
제3절 표적시장 설정 = 22
1. 표적시장 = 24
2. 교환가치의 분석 = 26
3. 제품차별화 = 28
제4절 마케팅 전략 = 30
1. 대학의 마케팅 MIX 요소 = 31
2. 마케팅 전략 = 32
3. 계획과 통제 = 34
제4장 실증분석 = 36
제1절 연구모형과 가설설정 = 36
1. 연구모형 = 36
2. 연구가설 = 37
제2절 연구대상변수와 설문지작성 = 38
제3절 표본추출과 분석방법 = 40
제4절 가설의 검증 = 45
1. 소속단과대학과 관련된 가설 = 45
2. 학년과 관련된 가설 = 47
제5절 요인분석결과 = 50
제6절 다중회귀분석에 의한 가설검증 = 54
1. (가설-III)의 검증 = 54
2. (가설-IV)의 검증 = 55
3. 분석결과의 요약 = 56
제5장 결론 = 58
제1절 연구결과의 요약 및 시사점 = 58
제2절 연구의 한계점과 과제 = 59
참고문헌 = 61
부록: 설문지 = 6
Numerical Study on the Combustion Characteristics of Low-Speed Two-Stroke Diesel Engine
Full text linkAmong the various technologies for emission reduction, The best selection of Fuel Atomizer is widely used as an economical and effective method to control emission and engine performance.
To provide an insight into the combustion characteristics according to atomizer geometry, Four atomizers type have been studied for a large low speed two-stroke diesel engine using FIRE CFD code. The measured cylinder pressure data and emission trends were good agreement with calculated data.
And heat flux calculation for combustion components is also performed and the result shows the similar trend with measurment temperature value. However, some injection and combustion model constants did need to be re-optimized to improve accuracy with the large low speed two-stroke diesel engine. The computational results celarly show that atomizer with mixed hole size and relatively larger injection area is more advantage than that of same hole diameter for NOx emission.
The results obtained in this simulation study further demonstrate that the CFD code can be used as an effective design tool for optimizing engine performance and emission, thereby saving a considerable amount of time and resources.목차
Abstract = III
Nomenclatures = IV
제1장 서론 = 1
제2장 수학적 모델 및 해석 알고리즘 = 5
2.1 지배 방정식 = 6
2.2 난류 모델 = 8
2.3 연료 분무 모델 = 11
2.4 액적 분열 모델 = 14
2.5 연소 모델 = 17
2.6 난류 확산 연소 모델 = 20
2.7 질소산화물 생성 모델 = 22
2.8 Soot 생성 및 산화 모델 = 26
2.9 해석 알고리즘 및 계산 절차 = 28
제3장 초기조건 및 경계조건 = 30
제4장 계산결과 및 고찰 = 36
4.1 Atomizer 형상에 따른 액적 분포 해석 = 36
4.2 Atomizer 형상에 따른 유동 해석 = 47
4.3 Atomizer 형상에 따른 연소 & Emission 해석 = 65
제5장 결론 = 86
參考文獻 = 8
(A) Study on the Development of a Sunlight Collection System Using a Sensor Array Technique
Full text linkA Study on the Development of a Sunlight Collection System Using a Sensor Array Technique
Nowadays, concerns about the discovery and the development of alternative energies are increased day by day, and naturally researches on the development of alternative energies are reported in every country of the world. Moreover, it is very important to find alternative energies in this country which has little resources. There are many types of energies which belong to alternative energy, such as solar energy, wave energy. wind energy, and so forth. Solar energy is one of the most attractive alternative energies for the future because it is clean, consistently supplied, and widely distributed throughout the earth. Especially, it has high potential to be used in this country which has much better daylights a year.
By the way, the density of the solar energy is too low to use the solar energy directly. In order to use it effectively it must be needed to comprise a system to collect the sunlight. To comprise the sunlight collection system, first of all, a solar tracking system is necessary to track the sun during daylighting.
This thesis describes a sunlight collection system during daylighting which comprises a solar tracking element, sunlight collection element, and sunlight transmitting element. The most important element of them is the solar tracking element and this thesis proposes a new type solar tracking system which uses a full sensor method with a two-axis sensor array. And it also develops an algorithm which operates the overall system effectively. Especially, an algorithm called holding mode algorithm is developed to reduce the execution time for the real time tracking.
The developed system has the characteristic that it is applicable the place where the mounted base is moved or where the orientation is changed with time. Because the suggested solar tracking system tracks the sun only using the two-axis sensor array regardless of the information of the position
A Study on the Erosion Characteristics of Ultrasonic Transducer Horn Tip in Sludge Oil Environment
Full text linkSludge oils were unavoidably produced in ship's operations, therefore it is necessary to manage the sludge oils inside the ship itself with the view to prevent marine oil pollution from ship. The present study deals with the ultrasonic breaking systems that recycle the sludge oil from ships into usable oil to be burnt. Experimental studies were carried out to investigate the homogenizing effect of the marine oils and the erosion aspect of horn disc by repeated vibration of ultrasonic transducer. The matrix structures of the environment of various marine oils were interpreted to analyze the breaking and dispersion effects by cavity. The erosion damages the horn disc SS41 with weight loss rate and the irradiation time to maximum. Erosion rate were simultaneously examined according to the variation of the transducer amplitude, as well as the oil temperature and the immersing depth of horn disc.
The important findings from this study are as follows.
1) According to the depth of horn disk is deep, the variation of organization by cavity is less while the breaking effect of the particles are vitalized according to the increment of oil temperature. In addition, the effects of breaking and dispersion are prominent in proportion as period of experiment increases.
2) The cavitation by the horn of the ultrasonic vibrator is insensitive according as its depth increases in the oil, and the size of the bubble is larger in the high density condition of SLO(sludge lub. oil) than the condition of SFO(sludge fuel oil). Accordingly, the amount and rate of weight loss rate decrease according to the depth of horn, and the degree of loss at SLO condition is bigger than SFO condition.
3) The amount and rate of weight loss rate by the erosion of horn disk inclined to increase at the SFO condition in proportion as a temperature of oil sludge increases while it decreases at the SLO condition.
4) The difference of the maximum erosion rate of the horn disk which has 50㎛ of the amplitude of vibration decreases in proportion as the depth of horn disk gets deep at the both SLO and SFO condition.
5) When the temperature of sludge is going up, the maximum erosion rate of the horn disk which has 50㎛ of the amplitude of vibration inclined to decrease at the SFO condition while it increases at the SLO condition. In addition, the period of the maximum erosion rate at the SLO condition is shorter than the SFO condition
6) With a point of view of the maximum erosion rate according to the amplitude of horn disk, the maximum erosion rate at 50㎛ of the amplitude is more than double compare to the condition of 24㎛.
In view of the results so far achieved we could certificate developmental possibility of the ultrasonic breaking systems to manage the sludge oils inside the ship itself, and the experimental results can be useful to consider a countermeasure for the prevention of erosion damages.목차
List of Tables = iv
List of Photographs = iv
List of Figures = v
Abstract = vii
제1장 서론 = 1
제2장 실험의 이론적 배경 = 5
2.1 슬러지 = 5
2.1.1 선박유류 및 슬러지 = 5
2.1.2 연료유 슬러지 발생 = 6
2.1.3 Spot test = 10
2.2 초음파 = 12
2.2.1 초음파의 정의 및 응용 = 12
2.2.2 초음파 발생 장치 = 14
2.3 캐비테이션 = 16
2.4 초음파와 캐비테이션 = 18
2.4.1 초음파 진동에 의한 캐비테이션 발생이론 = 19
2.4.2 초음파 진동의 응용 = 22
제3장 실험방법 및 장치 = 25
3.1 시료유의 특성 = 25
3.2 시험편 및 실험장치 = 26
3.2.1 시험편 = 26
3.2.2 실험장치 = 28
3.3 실험방법 = 30
3.3.1 슬러지유의 캐비테이션 작용에 의한 조직변화 = 30
3.3.2 진동자 혼의 침지 깊이에 따른 침식특성 조사 = 31
3.3.3 슬러지유의 온도 변화에 따른 진동자 혼 디스크 침식특성 조사 = 31
3.3.4 진동자 혼 진폭의 변화에 따른 디스크의 침식특성 조사 = 32
제4장 결과 및 고찰 = 33
4.1 초음파 진동에 의한 슬러지유의 조직변화 = 33
4.1.1 초음파 분쇄작용 시간 경과에 따른 유입자의 상태 = 33
4.1.2 슬러지유 환경에서 진동자 혼의 침지 깊이에 따른 유입자의 균질화 효과 = 35
4.1.3 슬러지유의 온도 변화 환경에서 유입자의 균질화 특성 = 37
4.2 진동자 혼의 침지 깊이에 따른 혼 디스크의 침식양상 = 39
4.2.1 진폭 50㎛인 진동자 혼 디스크의 SFO에서의 침식특성 = 39
4.2.2 진폭 50㎛인 진동자 혼 디스크의 SLO에서의 침식특성 = 42
4.2.3 진폭 24㎛인 진동자 혼 디스크의 SFO에서의 침식양상 = 45
4.2.4 진폭 24㎛인 진동자 혼 디스크의 SLO에서의 침식양상 = 49
4.2.5 슬러지유 환경에서의 최고침식율 및 이에 이르는 시간의 변화양상 = 53
4.3 슬러지유의 온도 변화 환경에서 혼 디스크의 침식특성 = 57
4.3.1 SFO에서의 진폭 50㎛인 SS41 진동자 혼 선단의 침식양상 = 57
4.3.2 SLO에서의 진폭 50㎛인 SS41 진동자 혼 선단의 침식양상 = 60
4.3.3 SFO에서의 진폭 24㎛인 SS41 진동자 혼 선단의 침식양상 = 64
4.3.4 SLO에서의 진폭 24㎛인 SS41 진동자 혼 선단의 침식양상 = 67
4.3.5 슬러지유 환경에서의 최고침식율에 미치는 온도의 영향 = 70
4.3.6 슬러지유 환경에서의 최고침？컥꼬？ 이르는 시간과 온도의 연관성 = 72
제5장 결론 = 74
참고문헌 = 76
Appendix = 8
A Hybrid Search Method Combining a Real-Coded Genetic Algorithm with a Simplex Search Method
Full text linkOne of the main drawbacks in applying genetic algorithms (GAs) to complex problems has been the high computational cost due to their slow convergence rate. This fact gives a difficulty in an attempt to use GAs for function optimization problem. To alleviate this difficulty, an island-model based hybrid search method which combines a real-coded genetic algorithm(RCGA) with a simplex search method is presented. Our motivation for employing the RCGA is to introduce best exploration into the hybrid search method, and the simplex search method is to introduce cost-effective exploitation. In an attempt to make effective use of the exploitation operation of the simplex search method in the proposed search framework, we use a parallel architecture where two algorithms run during the isolation time and exchanges migrants. To demonstrate the superiority of the proposed algorithm, it is compared with an alternative optimization technique, RCGA proposed by Michalewicz in two optimization problems for modeling a system with time delay and tuning the parameters of a PID controller.목차
Abstract = iii
제1장 서론 = 1
제2장 유전 알고리즘과 단체법 = 4
2.1 유전알고리즘 = 4
2.1.1 유전알고리즘의 구조 = 4
2.1.2 유전알고리즘의 병렬화 = 12
2.1.3 성능？梔熾？ 테스트 환경 = 15
2.2 단체법 = 21
2.2.1 탐색 원리 = 22
2.2.2 Nelder-Mead의 단체법 = 23
제3장 제안한 하이브리드 탐색법 = 32
3.1 하이브리드 탐색법의 구조 = 32
3.1.1 이주모델에 기초한 병렬성 구현 = 33
3.1.2 탐색법의 초기화 = 35
3.1.3 이주자의 선택 및 이주 = 35
3.2 하이브리드 탐색법의 파라미터 = 37
3.2.1 RCGA와 단체법의 파라미터 = 37
3.2.2 이주율의 결정 = 37
제4장 시뮬레이션 = 39
4.1 시스템의 파라미터 추정 = 39
4.2 PID 제어기의 파라미터 동조 = 44
제5장 결론 = 49
참고문헌 = 5
A Study on the Process for Judgment of Marine Accident in the Light of the Case of Grounding of Fish Carrier M/V "YAYOI"-focusing on the debate on unconstitutionality
Full text linkIn administrative procedure to find the causation of a marine accident, korean government adopts quasi-judicial process by Maritime Safety Tribunal(MST) with the aim of improving the safety of life at sea and the avoidance of accidents alike in the future, through judgement of which seafarers or pilots who are to blame are punished and other persons involved are recommended for their contribution to the cause accordingly.
Having been established based upon Marine Accident Investigation and Tribunal Act(MAIT Act), MST which is the unique authority in korean government in the field of determination of the circumstance and cause of marine accidents, consists of 4 RMST(Regional MST) for first quasi-judicial instance and KMST(Korean MST) for second instance. The judgements of MST are admitted as an authoritative evidence for judgement by justice of judiciary and also used as a basis for final settlement of underwriter.
In view of the priority in applying different laws, MAIT Act takes dominion over administrative appeals act or administrative procedure act which are for recovery of the damage caused by administrative misconduct, since MAIT Act does not allow to follow any other act where there is any conflict between MAIT Act and others while administrative appeals act and administrative procedure act prescribes to allow to follow other acts provided they prescribes expressly otherwise.
Furthermore, there is no doubt that the process by MAIT Act is completely in conformity with the value system declared in constitutional law since MAIT Act is one of the acts for administrative appeals which is derived from the constitutional law.
In the process of administrative procedure, court of first instance is administrative court and the second instance is brought to the court of appeal and finally to supreme court. Where there is any conflict in patent right, the first instance of patent case is brought to patent court and to supreme court for final judgement. However the case to require cancellation of the judgement by KMST is directly brought to supreme court as is prescribed in (r)74.1 of MAIT Act.
By the hand, constitutional law declares that "people are given the right to have their legal process duly presided by the judge." but it should be construed that they are ensured to do so but not be understood that they are deprived of any opportunity available for judge (justice) of judiciary to reach rational decisions(judgement).
As is prescribed in (r)74.1. MAIT Act, where there is no consent to judgement by KMST, the person involved can bring it to supreme court in which justice also can examine the factual substances of the accident as well as legal matters. Therefore such right for the people to have their legal process is not hindered that means MAIT Act is entirely in conformity with constitutional law.
On the course of determining the circumstances and the cause of a marine accident, it usually happens that making decisions whether it occurred by intentional wilful act or by fault of the person involved is extremely difficult, which mainly results from short of evidence due to the characteristic of marine casualty itself. In this event, judge of MST determine the circumstances and cause of the accident with power given to him and this is occasionally subject to argument between the persons involved or concerned in the judgement by MST.
In order to avoid to face with those unnecessary and undesirable problem, more lawful, scientific, logic and fair judgement by MST should be made by means of carrying out followings1. Evidence should be collected as many as possible at the stage of initial inspection by inspector to be submitted to judge of RMST, and judge of RMST would collect more on his power if they are considered insufficient. By doing so, fairness and validity of judgement could be accomplished and all the process of MST should be focused on finding the cause of the accident itself not on disciplinary punishment of the persons involved.
2. To ensure fairness and validity of judgement by MST, qualification for commissioner(chief judge of KMST) and judge of MST is needed to be enhanced and, in particular, commissioner should be from the staffs who has career of inspector or judge of MST with expertise in marine accident investigation.
3. In order to eliminate unnecessary and possible intervention from outsides of MST in determination of the cause of marine accident, status of judge of MST should necessarily be ordinary official without termination of their tenure, not extraordinary and their tenure should be extended to 5 years from 3 years which can be prolonged to their age of 60, termination age of service, provided that no significant misconduct or faults are committed.
4. Personnel management of judge of MST should be carried out independently without being influenced by improper intervention from outside. Recruitment or extension of tenure of judge should be promulgated by law and it should be observed throughly.
5. As the procedure for finding cause of marine accident by MST follows quasi-judiciary process, inspector and judge of MST are on opposite side each other, which inevitably require them to perform their duty independently without being influenced by others. Therefore, general management including personnel matters should belong to the general staff not inspector. And a staff for research purpose of the process of MST should be arranged for each judge.
6. In association with the event where persons involved in the marine accident brings the case to supreme court, amendment to MAIT Act should be made to clarify who are entitled to do so, the possibility of suspension of execution of judgement by MST and the degree of authoritativeness of judgement.
7. KMST should be directly governed by Prime Minister to ensure substantial efficiency of the recommendations by MST to any authorities of the government.
Looking back upon the case of the grounding of fish carrier M/V "YAYOI" which was brought to supreme court by the persons involved, skipper and chief engineer, upon the judgement by MST, it is considered quite natural for supreme court to reject their appeal since KMST reached the judgement after collection and analysis of enormous evidences for a long period of time.
Subsequently the judgement of the case of M/V "YAYOI" by KMST played an great role as an important evidence for judicial judgement in the both criminal and civil court for the case and it may well be said that judiciary has admitted and recognized lawfullness and validity of the process of MST as well as its authority as an expert agency of the administrative. In particular, the supreme court has also rejected the submission for application for adjudication on constitutional complaint by the persons involved in the accident, which clearly means that present procedures for finding causation of marine accident by MST is completely in conformity with the constitutional law. Since they cancelled their application for an adjudication on constitutionality of a law by themselves too, it seems that the argument on whether the process of MST is in conformity with constitutional law or not is cleared.
Finally, since it is extremely difficult to find the substantial fact and causation of marine accident due to lack of evidence, all the marine accident should be dealt by marine experts of MST prior to judicial judgement by justice in court. It can be admitted with no doubt that contemporaneous administrative procedure for finding the cause of marine accident by MST through quasi-judiciary process is far rational and efficient system and entirely in conformity with constitutional law.목차
第1章 序論 = 1
第1節 硏究의 背景 및 目的 = 1
第2節 硏究의 範圍 및 方法 = 4
第2章 야요이호 坐礁事件과 審判進行狀況 = 6
第1節 야요이호 坐礁事件의 審判 = 6
I. 事件의 槪要 = 6
II. 海洋安全審判進行狀況 = 6
III. 中央海洋安全審判의 事件 原因에 대한 分析 및 考察 = 8
第2節 야요이호 坐礁事件 裁決에 대한 訴訟 = 18
I. 行政訴訟進行狀況 = 18
II. 關聯 民ㆍ刑事 事件 進行狀況 = 20
第3章 行政審判制度와 海洋安全審判 = 22
第1節 一般行政審判 = 22
I. 行政審判의 意義 = 22
II. 行政審判의 法的 地位 = 23
III. 行政審判의 必要性 = 23
IV. 行政審判의 種類 = 26
第2節 特別行政審判으로서의 海洋安全審判 = 29
I. 海洋安全審判制度의 沿革 = 29
II. 海洋安全審判의 意義 = 34
III. 海洋事故와 審理의 範圍 = 40
IV. 裁決과 裁決의 執行 = 45
V. 海洋安全審判院의 組織 및 管轄 = 48
VI. 海洋安全審判節次 = 51
第4章 海洋安全審判裁決에 대한 行政訴訟 = 68
第1節 裁決取消訴訟의 意義 = 68
I. 行政訴訟의 意義 = 68
II. 海洋安全審判裁決에 대한 訴의 意義 및 性質 = 69
III. 海洋安全審判裁決에 대한 訴의 대상 = 70
第2節 訴의 提起 = 74
I. 訴의管轄 및 提訴期間 = 74
II. 訴의 原告 및 被告 = 75
III. 訴의 提起와 裁決의 確定力ㆍ執行力 = 76
第3節 裁決取消訴訟의 審理 및 判決 = 77
I. 大法院에서의 訴의 審理 = 77
II. 裁決의 取消 = 78
第5章 海洋事故에 대한 審判節次의 違憲性 논의 = 79
第1節 海洋安全審判法의 違憲性 問題提起 經緯 = 79
I. 特許審判과 海洋安全審判의 審級에 대한 論議 = 79
II. 海洋事故 事實認定에 대한 問題提起 = 81
第2節 海洋安全審判法의 違憲性 與否 檢討 = 82
I. 違憲法律審判提請申請 및 理由(違憲論) = 82
II. 違憲法律審判提請申請에 대한 中央海洋安全審判院의 의견 요지(合憲論) = 83
III. 大法院의 判斷 = 86
IV. 憲法訴願審判請求 = 87
V. 違憲論과 ？油癎揚？ 爭點比較 = 87
VI.裁決에 대한 訴를 大法院 專屬管轄로 규정한 海洋安全審判法 제74조 제1항의 違憲性 與否(私見) = 95
第6章 結論 = 9
A Numerical Analysis of Liquid Injecton into the Compressor Cylinder of a Heat Pump
Full text linkHeat and fluid flow in a heat pump compressor into which liquid refrigerant is injected for the purpose of reducing discharge gas temperature has been numerically analysed. A mechanistic approach encompassing liquid jet breakup and droplet evaporation has been performed to investigate the effects of liquid injection on the spacial and temporal variation of the gas temperature and pressure inside the compressor cylinder. An evaporation model based on kinetic theory is employed for superheated liquid droplets of which the thermodynamic state is close to flash boiling. Various parameters, such as liquid injection mass, time, duration and droplet size, are considered in the present study to elucidate the mechanism and flow field inside the compressor, which could not have been acquired by the typical cycle simulations. As the injection mass is increased, discharge gas temperature is decreased, while the pressure is increased due to the added mass of the injection. For the injected liquid mass corresponding to 15% of the total vapor mass in the cylinder, the discharge gas temperature drops by 22.4 K. It is found that the injection starting time and duration have little effect on the discharge temperature drop. It is, however, observed that the droplet size plays a major role in the evaporation rate of the droplets that determines the degree of the discharge temperature drop.목차
Abstract
기호설명
표목차
그림목차
제1장 서론 = 1
제2장 선행연구 고찰 = 3
2.1 열펌프 성능 향상 = 3
2.2 액분사 해석 기술 = 7
제3장 수학적 모델 = 13
3.1 개요 = 13
3.2 지배방정식 = 14
3.3 액적의 증발 = 16
3.4 액적의 파열 = 19
제4장 결과 및 고찰 = 20
4.1 해석 대상 및 범위 = 20
4.1.1 열펌프 ？漫？ 조건 = 20
4.1.2 액분사 조건 = 21
4.2 순수압축과정 = 24
4.3 분사조건의 영향 = 25
4.3.1 액분사 질량의 영향 = 25
4.3.2 액분사 시점의 영향 = 26
4.3.3 액분사 시간의 영향 = 28
4.3.4 파열 모델 = 28
4.3.5 성능계수 고찰 = 31
제5장 결론 = 70
참고문헌 = 7