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(A) Study of a Numerical Analysis on Three-Dimensional Solidification and Bulging of Continuous Casting Slabs
Full text linkIn the continuous casting process, the internal cracks should be prevented to achieve the improvement of productivity by high speed casting. The internal cracks can occur when tensile strains at the solidification front exceed a certain threshold level. The bulging of the strand is presumed to play a major role in occurrence of tensile strains that cause internal cracks. In particular, when the casting speed is high, strains caused by the bulging become large because of the decrease of the solidified shell thickness and the increase of the surface temperature of the strand.
In this paper, solidification analysis of strand-casting under air-mist spray condition, which uses air-mist mixture, is carried out by the two-dimensional finite difference method. In the solidification analysis, the boundary conditions of width face of slab are defined by considering zones directly cooled by sprays and indirectly by rolls and radiation, and the boundary conditions of narrow face of slab are only defined by considering zones by radiation. In order to deal with complicated deformation of the slab, the three-dimensional elastic-plastic and creep models are used for analyzing bulging in the strand casting. The bulging deflections and strains are obtained by using the well-known finite element code ANSYS and are compared with those from the experiments under the same condition. For efficient bulging analysis, the output data of the finite difference method are automatically transformed to input data for ANSYS. The effects of important parameters in casting process of the slabs, such as casting speed, roll pitch and slab shape, are analyzed by implementation of the presented method.
When comparing with different casting speeds, the bulging strain obtained in the high speed casting appears to be larger than that at the low speed casting. Also, creep has great influence on the casting directional strain, which increases up to three times of the resulted value by the elasto-plastic model. Therefore, the effect of creep cannot be neglected in the computation of the bulging. When the ratio of width to thickness is smaller than 3.0, the values of casting directional strain and bulging deflection drastically decrease with decreasing of the slab width.
It is shown that the secondary cooling condition, roll pitch of the continuous caster and slab width are important process parameters to restrain the bulging and prevent the crack in high speed casting.Abstract = ⅰ
사용기호 = ⅲ
List of Tables = ⅵ
List of Figures = ⅶ
제 1 장 서론 = 1
1.1 연구 배경 = 1
1.2 연구 동향 = 2
1.3 연구목적 및 범위 = 4
제 2 장 응고해석 = 7
2.1 열전달 방정식 적용조건 = 8
2.2 유한차분법 = 9
2.3 지배방정식 및 경계조건 = 10
2.4 재료의 물성치 = 12
2.5 각 냉각구간에서의 열전달 경계조건 = 15
2.5.1 1차 냉각(몰드 냉각) = 15
2.5.2 2차 냉각 = 15
2.5.3 복사냉각 = 16
2.5.4 롤 접촉 냉각 = 17
2.6 응고해석결과 = 18
2.6.1 주조속도의 영향 = 18
2.6.2 슬래브폭의 영향 = 19
제 3 장 벌징해석 = 27
3.1 벌징해석 모델 = 27
3.2 해석 이론 = 28
3.2.1 유한요소 해석이론 = 29
3.2.2 탄소성 해석 = 29
3.2.3 크리프 해석 = 31
3.3 해석결과 = 33
3.3.1 롤피치의 영향 = 33
3.3.2 벌징에 있어 크리프의 영향 = 33
3.3.3 주조속도의 영향 = 34
3.3.4 슬래브폭의 영향 = 34
제 4 장 내부크랙 = 45
4.1 크랙의 유형에 따른 발생원인 = 45
4.2 내부크랙과 응고면에 발생하는 변형률 사이의 관계 = 45
4.2.1 굽힘롤러구간 = 45
4.2.2 교정롤러구간 = 46
제 5 장 결론 = 47
참고문헌 = 5
Long-term Development Plan of Waterfront Area in Yeong-do:Focused on the area near Busan bridge and Yeongdo bridge
Full text linkYeong-do is one of representative waterfront tourism cities in our nation, accommodating scenic seashore natural resources, competitive tourism resources like Taejongdae and a geographical resource adjacent to downtown Busan. Still, however, it doesn't have any systematic development plan for the waterfront. So a comprehensive long-term development plan is needed for the waterfront, marine city of Yeong-do.
When the demand for Yeong-do seashore development is expanded, as well as constructing the second Lotte Hotel, in the future, an entire redevelopment for the old town will be required, together with the environment-friendly waterfront development model to create an appropriate seashore environment. In particular, the necessity of redevelopment for the area near Yeong-do Grand Bridge, a gateway to Yeong-do, and Busan Grand Bridge is gaining force. In conjunction with the completion of Lotte hotel, a new land use planing is needed for the neighboring Yeong-do Grand Bridge and Busan Grand Bridge, too.
At this point of time, a planing for the development of new facilities in the falling behind area near the bridges is essential, and also a desirable image of the future is required in accordance with the long-term development plan for the Yeong-do coast.
In this study, therefore, I have prepared a land use plan and facilities arrangement plan for the area near Yeong-do Grand Bridge and Busan Grand Bridge in Yeong-do District to meet the change of the surrounding coastal environment, according to the construction of the second Lotte Hotel and the modernization of Jagalchi Market, based on questionnaires, related regulations and cases for the direction of area development, and then suggested a long-term image of the future for the bridge area and its vicinities, appropriate to its reputation as a gateway to Yeong-do.
As a result of our questionnaire, a majority answered seashore resorts as the most desirable future development plan for the subject area, and preferred water-friendly facilities, historic culture facilities, harbor distribution facilities and recreation facilities in sequence as the suitable facilities for the area. Over 70 percent answered yes for the use of the area as oceanic tourism/leisure function.
The subject area has been planned to be specialized as seashore leasure tourism and culture, as well as becoming a water-friendly seashore by reinforcing the existing harbor facilities. In particular, I have implemented the planning to specialize waters by district, to utilize the existing waterfront's character, function and facilities and to endow the area with water-friendliness and environment-friendly planning to preserve the sea environment, leading to use the waters actively. It's planned to accommodate 2.4 million tourists a year, based on its 4 hour-stay, 4-season type resort.
Basically, the plan suggested by this study is a comprehensive and conceptual planning that suggest a long-term vision for improving the coastal environment of the planned area to cope with the change of the surrounding areas, rather than a limited plan to implement any specific business plan. Accordingly, the plan in this study has such flexibility as to be changed or renovated to meet the change of situation and environment. An implementation plan, reflecting the actual situation and right view of business at the point of time through specific investigation, should be required to launch any business, based on this study.목차
Abstract
1. 서론 = 1
1.1 연구배경 및 목적 = 1
1.2 연구내용 및 방법 = 2
2. 대상지역의 계획여건 분석 = 3
2.1 위치 및 세력권 = 3
2.2 자연환경조건 = 4
2.3 도시계획여건 = 6
2.4 관광환경여건 = 8
2.5 관광수요 = 9
2.6 상위계획 및 관련계획 = 14
3. 관련법규 및 해외사례 = 25
3.1 관련법규 = 25
3.2 해외사례 = 30
3.2.1 조사목적 = 30
3.2.2 시드니 달링하버 워터프론트 = 30
3.2.3 오클랜드 항만 워터프론트 = 35
3.2.4 로토루아 lakefront = 37
3.2.5 퀸스타운 lakefront = 39
4. 토지이용 및 시설물 현황조사 = 42
4.1 조사개요 = 42
4.2 대상지역 개요 = 43
4.3 시설물의 규모 = 44
4.4 시설물의 구조 및 용도 = 45
4.5 시설물의 준공연도 = 46
4.6 대상지역의 현황사진 = 47
4.7 설문조사 분석 = 54
5. 대상지역 장기발전 계획안 = 67
5.1 계획배경 및 목적 = 67
5.2 계획구상 = 68
5.3 토지이용계획 = 70
5.4 동선계획 = 73
5.5 시설배치계획 = 73
6. 결론 = 77
참고문헌 = 79
부록 = 8
Combustion Characteristics in Burner Using Water Emulsified Fuel Produced by Swirl Impinging Mixer
Full text linkThis paper addresses to the combustion characteristics in the burner using emulsified fuel newly produced with the swirl impinging mixer just before ejecting without any surfactant. According to international agreement, the restriction of exhaust emissions of the industrial burner, for instance NOx, PM etc, is getting stricter for the environmental conservation. As a countermeasure of these, the emulsified fuel, which is water and oil mixture, is one of the measures.
The emulsified fuel is made into fuel drops of uniform size, 10~20㎛, using swirl impinging mixer without surfactant. The characteristics of combustion, exhaust, and efficiency are analysed in this paper.
As a result, the emulsified fuel applied to a burner makes the flame length short and reduces excessive air. NOx and PM are also reduced up to 30% and 90% respectively. If the amount of exhaust emission is remained at the same level the fuel efficiency can be better by 4%.목차
ABSTRACT
I. 序論
1.1 연구의 배경 및 목적 = 1
1.2 선행연구 = 3
1.2.1 물 혼합 연료 연소 특성 연구 = 3
1.2.2 물 혼합 연료 사용 버너 성능 향상 연구 = 6
1.2.3 물 혼합 연료 사용 엔진 성능 향상 연구 = 8
II. 理論的 考察
2.1 물 혼합 연료 = 11
2.2 물 혼합 연료의 연소특성 = 12
III. 實驗裝置 構成 및 實驗 方法
3.1 실험 버너의 구성 및 실험 조건 = 16
3.2 상용 버너의 구성 및 실험 조건 = 21
IV. 實驗結果 및 考察
4.1 실험 버너의 연소 특성 = 24
4.1.1 물 혼합 특성 = 24
4.1.2 분무 특성 = 26
4.1.3 온도 특성 = 27
4.1.4 화염 특성 = 32
4.1.5 배기 특성 = 43
4.2 상용버너의 연소 특성 = 47
4.2.1 열 효율 = 47
4.2.2 배기 특성 = 50
V. 結論 = 54
參考文獻 = 5
(A) Study on the Introduction of Port Authority System for Port Administration into Korea
Full text linkA port authority system has been regarded as one of the efficient ways of port administration. The Korean government is thus now planning to introduce such a system into the port of Pusan and Inchon. Although it is not a satisfactory level, an agreement on the basic frame of the Port Authority(PA) has been reached between the concerned organizations in Korea.
There were various opinions as to concrete establishment of the PA between the Ministry of Maritime Affairs & Fisheries (MOMAF), which has a responsibility for port management in Korea, and the Local Authorities, which are guaranteed to partly participate in the PA. The initial plan for the establishment of the PA has to be changed partly by not the logical and rational consideration but the negotiations between the interests that have an interest in the PA.
The aim of this study is thus to examine opinions disclosed on the structure of the PA between MOMAF, Pusan city and Inchon city by analysing and reviewing the reports and discussions with the Promotion Committee. In addition, this thesis is to find out the reasons why they have different views and opinions over the establishment of PA and to analyze how such conflicting opinions will influence on the operation in future of the PA. On the basis of the above research, this study suggests a more rational proposal to establish the PA not from the result of the negotiation between the interested parties, which have involved in the process of establishment of the PA, but from the viewpoint of principles.
The most efficient proposal on the establishment of the PA for Korean port administration, is suggested as follows :
1. Order of Port to Introduce
Preferentially, the Pusan port and Inchon port introduce the PA system in advance and then the other ports such as Pohang, Ulsan, and Kwangyang port do the system year by year.
2. Name and Feature of the PA
3. Mission of the PA
The function of the port development and operation which has been performed by various public bodies previously should be transferred to the PA.
4. Donation of the State-owned and National asset to the PA
After allowing free of charge for the state owned assets for 5 years they should be purchased by the long term payment method.
5. Constitution and the Duty of Committee
1) Right to appoint and dismiss of Member
The Right to appoint and dismiss members of PA should be given to the PA.
2) Arrangement of Seating
10 more and less committee member is suitable.
3) Organization of Member
5 member should be appointed by the Chief of the Local Authority and the other 5 member by the government.
4) Term of Service
If the seating is arranged by 10 members, the term of service should be 5 years and every year 2 members are substituted.
5) Qualification of Member
It is reasonable to exclude the following person- Unable to perform his or her duty due to his or her health
- Abuses his or her Right
- Judged of guilty with more than penal servitude, including a stay of execution
- Deprived of his or her qualification
7) Payment for Member
The half of member shall receive payments as a full-timer and the other half non payments.
8) Right and Duty of the Committee
The PA as the highest institute of making decisions has the rights to decide the main policies, to supervise the execution of the policies, to legislate rules, and to appoint and dismiss member of the board.
9) Decision
The chairman of the PA shall represent the committee and preside meetings. The decision is will be made by majority of votes.
6. Other Member
1) President
The president shall be appointed by the committee with 3 years service term and can be reelected. He or She shall have the responsibility for executing the general affairs of the PA.
2) Several Member of the Board
Several member of the board shall be nominated by the president and appointed by the committee with 3 years service term. They can be reappoined and assisted the president.
3) Auditor
2 auditor shall be appointed and each of them shall be appointed by the government and the Local Authority, respectively.
7. Status of the Member in terms of the Criminal Law
It is desirable for the member to have the same liabilities with a public official in terms of the criminal law.
8. Financial Account
1) The independent profit system under the corporate account method shall be introduced.
2) The right to issue public loans or the right to borrow operating funds shall be provided.
3) The government shall provide a subsidy at the beginning of about 5 years to compensate any losses. When the PA has an ability to make profits, the independent profit system shall be introduced.
9. Relationship between the Government and the Local Authority
The port development plan shall be approved by the government and the Local Authority, but the other interventions shall be excluded as much as possible.
10. Adjustment of the City and the Port Development Plan
It is obliged in legally for the experts to attend for city and port development plan.- National Assembly Member
- Council Member of Local Governments in the year
- Officials in charge of Port Construction Office in the year
- Executive of the company or a person who is in the same or higher position
- A committee member who corresponds to each article mentioned above shall resign.
6) Dismiss of the Committee Member
Committee Member can be dismissed by the following reasonsABSTRACT = ⅴ
제 1 장 서론 = 1
제1절 연구의 필요성과 목적 = 1
제2절 연구방법 및 구성 = 2
제3절 연구의 범위 = 5
제 2 장 포트 오소리티의 의의와 선행연구 = 8
제1절 포트 오소리티의 의의와 특성 = 8
1. 포트 오소리티의 의의 = 8
2. 포트 오소리티의 특성 = 11
제2절 포트 오소리티로의 전환에 관한 우리나라의 선행연구 = 14
1. IBRD 교통조사단의 보고서 = 14
2. 항만관리제도의 공기업화에 관한 연구 = 14
3. 부산항 컨테이너 전용부두 건설자금을 위한 IBRD 차관의 신청 = 15
4. 민주화 및 지방화시대와 포트 오소리티 도입주장 = 17
5. 전국경제인연합회(1997)의 연구보고서『항만의 경쟁력 제고 과제』 = 18
6. "새로운 항만개발 및 관리제도의 구축방안" 발표 = 20
7. 1998년 가립회계법인의 경영진단 = 21
8. 1999년 정부(해양수산부)의 포트 오소리티 도입결정 = 22
제 3 장 주요국과 우리나라의 항만관리제도 = 23
제1절 항만관리제도의 유형과 추세 = 23
1. 항만관리형태의 주요유형 = 23
2. 항만의 소유와 운영의 분리 = 25
3. 항만의 민영화 = 27
제2절 주요국의 항만관리제도 = 32
1. 미국 = 32
2. 프랑스 = 38
3. 영국 = 40
4. 일본 = 42
제3절 우리나라 항만관리제도의 연혁과 문제점 = 45
1. 항만관리제도의 변천 = 45
2. 항만관리의 문제점 = 48
제 4 장 제안된 포트 오소리티의 비교분석 = 50
제1절 제안된 포트 오소리티 = 50
1. 해양수산부 제안 = 50
2. 부산광역시 제안 = 51
3. 인천광역시 제안 = 52
4. 해양수산부안의 변화 = 52
제2절 제안된 안의 비교분석과 협의 = 55
1. 포트 오소리티의 명칭 = 56
2. 포트 오소리티의 소속 및 감독기관 = 58
3. 포트 오소리티의 의사결정체계 및 임원 구성 = 64
4. 포트 오소리티의 관할구역 및 업무범위 = 68
5. 기존항만시설의 포트 오소리티로의 이관에 따른 제 문제 = 76
6. 포트 오소리티의 독립채산제 원칙과 중요 공사에 대한 정부지원문제 = 78
7. 포트 오소리티와 중앙정부 및 지방자치단체와의 관계 = 79
제 5 장 최적의 포트 오소리티 전환 방안 = 81
제1절 포트 오소리티의 기본 방향 = 81
1. 항만자치의 원칙 = 81
2. 독립채산제의 시행 = 81
3. 철저한 원가주의에 입각한 요금체계(수익자부담의 원칙) = 82
4. 개발자금차입의 자유화 = 82
5. 철저한 실수요자 임대제 = 83
6. 인사 및 자치의 독립성 보장 = 83
제2절 최적의 포트 오소리티 전환 방안 = 83
1. 대상항만 = 84
2. 포트 오소리티의 성격 및 명칭 = 85
3. 관장업무의 범위 = 85
4. 국·공유재산의 포트 오소리티에의 출연 = 86
5. 정관에서 정할 사항 = 89
6. 항만위원회의 구성 및 업무 = 90
7. 기타임원 = 95
8. 위원 및 임직원의 형사법상의 신분 = 97
9. 재무회계 = 98
10. 국가 및 지방자치단체와의 관계 = 101
11. 도시계획과 항만계획의 조정 = 102
제 6 장 결론 = 106
제1절 요약 및 결론 = 106
제2절 연구의 한계 및 향후 연구과제 = 109
참고문헌 = 110
부록 = 115
1. 해양수산부 연구보고서 = 115
2. 부산광역시 연구보고서 = 131
3. 인천광역시 연구보고서 = 14
(A) Study on the Effect of Phase Noise on 64 QAM System Performance
Full text linkIn modern digital communication, Frequency synthesizers are widely used in wireless LAN, military radar and transceivers. In the military freaquency hopping system, the 16 Kbps data are modulated to 14.5 MHz, up-converted to 30∼88 MHz by frequency synthesizer, and transmitted through the channel. The received data are down-converted to IF band by frequency synthesizer and demoulated. Because transceivers rely heavily on frequency conversion using frequency synthesizer in hopping systems and ,therefore, the spectral purity of the internal oscillators in both the receiver and the transmitter is one of the factors limiting the maximum number of available channels and users. Also, theose are demanded for wide-band frequency scope and excellent frequency resolution. To satisfy this conditions, we must predict the oscillator's internal phase noise and carefully consider when it designed.
The phase noise model proposed in [1] is widely known as the Leeson model, and is by far the most well-known. It is based on a linear time-invariant (LTI) approach for tuned tank oscillator, but it really has the nonlinear time variant natures. LC-tuned oscillator is using band-pass charateristics to reduce phase noise and has good performance than ring oscillator which has switching effect in power supply. However, it has not been used widely, for not be integrated on synthesizer.
Thus, in this thesis, linear time-variant(LTV) CMOS inverter ring oscillator's model which can be integrated and has good perfomance in phase noise than relaxation oscillator is analyzed.
To predict the phase noise of oscillator very accurately, the oscillator is considered, which has the linearly time-varying nature when the input impulsive current into the oscillator is small. The performance which detect the corrupted signal by oscillator phase noise is compared with only affected by AWGN and analyze how much it degrade system performance for 64 QAM.
In accordance with phase noise level, QPSK system performance, using HP-ADS(Advanced Design System), has been analyzed and compared with the results which only affected by AWGN. Added -85 dBc phase noise at 10 kHz offset frequency into the system degraded the BER about 2 dB in QPSK and 4 dB in 64 QAM.Absract = ⅱ
Nomenclature = ⅳ
제 1 장 서론 = 1
제 2 장 통신 시스템에서 타이밍 지터와 위상잡음 = 3
2-1 통신 시스템에서 타이밍 신호 = 3
2-2 타이밍 지터 = 5
2-3 PLL에서 타이밍 지터 = 7
2-4 위상잡음과 타이밍 지터？痼？ 관계 = 8
제 3 장 5단 CMOS 링 발진기에서 위상잡음 = 11
3-1 시변 위상 잡음 모델 = 11
3-2 ISF를 이용한 발진기의 임펄스 응답 모델 = 15
3-3 위상 잡음 저감 대책 = 21
제 4 장 위상 잡음이 시스템에 미치는 영향 = 24
4-1 QPSK 시스템 = 24
4-1-1 위상 잡음의 영향 = 27
4-1-2 HP-ADS를 이용한 위상 잡음의 영향 = 29
4-2 64 QAM 시스템 = 36
제 5 장 결론 = 40
참고문헌 = 4
Design of Improved Transmit Beamformer for Mobile Communications
Full text linkConsidering a wireless CDMA (code division multiple access) communication system over the multipath fading channel, the spatio-temporal processing at receiver seems quite beneficial because it could alleviate the fading effect and suppress various interferences over space and time domains simultaneously. The aim of receive beamforming is to form a spatial filter that passes the desired signals and suppress unwanted components. By contrast, the aim of transmit beamforming is to launch a signal into a propagation environment so that each receiver gets its desired signal without crosstalk from the signals intended for other receivers.
In this thesis, we propose a new downlink beamforming algorithm for array antenna in FDD (Frequency Division Duplex) environments. In a transmit mode, the antenna array at the base station needs to know the downlink channels as a means of optimizing its beampatterns. In a time division duplex (TDD) system, channel reciprocity provides a straightforward means of downlink channel estimation. For FDD, the presence of angle spread and delay spread causes a dramatic difference in the uplink and downlink channel vectors. Using the uplink signals to estimate the instantaneous downlink channel is not feasible in FDD systems for rich multipath channels typical in urban and suburban environments.
It was proposed that the new algorithm for correcting of a weak of point in FDD. In the proposed method it was estimated that the directions and power spectrum of the received signals, and construct the spatial covariance matrix at the downlink carrier frequency. To obtain the weight vector for beamforming, it is used that the criterion to be maximized by the SINR. The transmitted signal with the obtained weight vector has the multi-beam in each multi-path direction and the receiver forms the optimized beam in the wanted direction through the composition. The proposed method was compared with the conventional method to evaluate the performance of the proposed algorithm. To see the BER curve among the simulation results, it is confirmed that the proposed method has the improved capability (3 dB~5 dB) at the point 10^-5목차
기호표 = iii
약어표 = iv
Abstract = v
제1장 서론 = 1
제2장 기존의 송신 빔 형성 기법 = 3
2-1 궤환을 이용한 송신 빔 형성 기법 = 3
2-2 조향 벡터를 이용한 송신 빔 형성 기법 = 6
2-3 부공간을 이용한 송신 빔 형성 = 6
2-4 Pseudo-inverse DOA(Direction-Of-Arrival) 방법 = 8
2-5 Pseudo-inverse signal signature (SS) 방법 = 8
2-6 원하는 사용자 신호의 파워를 최대화하는 방법 = 10
2-7 고정된 빔을 갖는 빔 형성기 = 11
제3장 제안한 송신 빔 형성 알고리즘 = 13
3-1 하향 링크 빔 형성 과정 = 13
3-2 제안한 송신 빔 형성 알고리즘 = 16
제4장 컴퓨터 시뮬레이션 및 시뮬레이터 구현 = 19
4-1 컴퓨터 시뮬레이션 및 성능 고찰 = 19
4-2 범용 DSP 프로세서를 이용한 시뮬레이터 구현 = 27
(1) TMS320C31의 내부 구조 = 27
(2) 메모리의 확장 = 31
(3) 어셈블리 프로그램 작성 및 성능 평가 = 33
제5장 결론 = 34
참고문헌 = 3
(A) Study on the Risk Management for Improvement of Operational efficiency of Container Terminal in Korea
Full text linkKorean container terminals have been constructed and broadened very quickly by a lot of effort. But introduction of various management tools for container terminal has overlooked by now.
In this study, I tried to suggest the risk management tool for container terminal in Korea as one of many management tools.
For this in chapter 2, I reviewed general matters of container terminal and the change of managerial environment surrounding container terminal.
In chapter 3, I suggest general risk management process for container terminal, such as risk identification, risk analysis, risk control, risk financing, and risk administration.
In chapter 4, I tried to analysis an actual situation of risk management in container terminal. In order to investigate the actual situation of container terminal's risk management, both a questionnaire and an interview method have been implemented about the four container terminals(HBCT, PECT, UTC, GCT) in the port of Pusan.
In chapter 5, based on the actual data from both a questionnaire and interview method, problems in risk management of the container terminals are derived, and improvements for risk management are suggested.
Through this study, I could find the shortage of general recognition on the risk management in container terminal. For introduction of risk management in container terminal, the most important thing is the spreading of recognition on the risk management, which is very useful for container terminal.목차 = ⅰ
표목차 = ⅳ
그림목차 = ⅵ
ABSTRACT = ⅶ
제 1 장 서론 = 1
제 1 절 연구의 배경 및 목적 = 1
제 2 절 연구의 방법 = 2
제 3 절 연구의 내용 및 구성 = 2
제 2 장 컨테이너터미널의 일반적 고찰 = 4
제 1 절 컨테이너터미널의 개관 = 4
1. 컨테이너터미널의 기본조건 = 4
2. 컨테이너터미널의 운영체제 및 시설현황 = 4
3. 컨테이너 하역시스템 비교 = 6
4. 육상운송과 컨테이너터미널 = 8
5. 컨테이너터미널의 배상책임의 근거, 관리책임 및 시기 = 10
제 2 절 컨테이너터미널 환경의 변화 = 11
1. 컨테이너 선박의 대형화 = 11
2. 정기선시장 글로벌제휴체제의 확산 = 13
3. 전용터미널의 운영 = 15
4. 터미널운영사의 글로벌화 = 16
5. 터미널 하역시스템의 자동화 = 19
제 3 장 컨테이너터미널의 리스크관리 과정 = 20
제 1 절 컨테이너터미널 리스크관리의 개념과 필요성 = 20
1. 리스크의 정의 = 20
2. 컨테이너터미널 리스크관리의 개념 및 범위 = 21
3. 컨테이너터미널 리스크관리의 목적 = 22
4. 컨테이너터미널 리스크관리의 필요성 = 22
제 2 절 컨테이너터미널 리스크관리의 과정 = 24
1. 리스크 발견 및 규명 = 24
2. 리스크 분석 및 평가 = 28
3. 리스크관리 기법 개발 및 선택 = 29
4. 리스크관리행정 = 34
제 4 장 컨테이너터미널의 리스크관리 실태분석 = 35
제 1 절 실태분석의 방법 = 35
제 2 절 리스크관리 실태분석 = 35
1. 리스크의 발견 및 규명 = 35
2. 리스크 분석 및 평가 = 38
3. 리스크관리 기법 개발 및 선택 = 40
4. 리스크관리행정 = 51
제 5 장 컨테이너터미널 리스크관리의 문제점 및 개선방안 = 53
제 1 절 컨테이너터미널 리스크관리의 문제점 = 53
1. 리스크의 발견 및 규명에 있어서 문제점 = 53
2. 리스크분석에 있어서 문제점 = 53
3. 리스크관리기법에 있어서 문제점 = 54
4. 리스크관리행정의 문제점 = 56
제 2 절 개선방안 = 58
1. 리스크 발견·규명에 있어서 개선방안 = 58
2. 리스크의 분석·평가에 있어서 개선방안 = 58
3. 리스크관리기법의 선택에 있어서 개선방안 = 59
4. 리스크관리행정의 개선방안 = 64
제 6 장 요약 및 결론 = 69
참고문헌 = 71
부록 = 7
Unit Measurement for Container Terminal Facilities
Full text linkThis study aims at deriving an appropriate 'unit measurement' for container terminal facilities, which would be a base for determining size of facilities. For this, in depth survey has been done with container terminals in the Port of Pusan as well as Pusan New Port Plan. As terminal facilities, CFS, ODCY, rail handling facility, and both loaded and empty container storage area have been considered. As handling equipments, quay crane, various storage and retrieval cranes such as RMTC, RMGC, S/C and R/S have been included in the analysis.
Based on these analyses standard 'unit measurements' have been formulated by the type of equipments and of facilities. Finally, the unit measurements have been applies to the Port of Pusan to evaluate the requirement of facilities in the future.1장 서론
1.1 연구의 배경 및 목적 = 1
1.2 연구의 수행 방법 및 구성 = 2
2장 부산항만내의 시설 현황 및 화물처리량
2.1 컨테이너 전용터미널 시설현황 = 3
2.2 ODCY 시설현황 = 5
2.3 철송시설 현황 = 5
2.4 각 시설별 처리실적 = 6
3장 부산항 관련 시설수요원단위
3.1 컨테이너 터미널의 시설수요원단위 = 11
3.2 ODCY 업체별 시설수요원단위 = 13
3.3 철도시설 면적 및 시설 수요 원단위 = 14
3.4. 각 터미널별 TGS 현황 = 15
4장 장비별 시설원단위 산출
4.1 T/C를 이용한 컨테이너 장치장의 시설원단위 산출 = 17
4.2 S/C를 이용한 컨테이너 장치장의 시설원단위 산출 = 33
4.3 R/S를 이용한 컨테이너 장치장의 시설원단위 산출 = 34
4.4 T/H를 이용한 컨테이너 장치장의 시설원단위 산출 = 35
4.5 T/T를 이용한 철송장의 시설원단위 산출 = 35
4.6 샤시 장치장의 시설원단위 산출 = 36
4.7 G/C를 이용한 안벽시설 원단위 산출 = 36
4.8 공컨테이너 장치장 시설원단위 산출 = 38
4.9 게이트 시설소요 원단위 산출 = 38
5장 시설소요면적 산정
5.1 컨테이너 장치장 소요면적 산정 방법 = 39
5.2 부산항 컨테이너 수요 예측 = 45
5.3 물동량 추정에 따른 소요 TGS 분석 = 47
5.4 터미널 장치장 규모 산정(적용예) = 52
6장 결
(A) Study on Optimum Design of Marine Outfall System
Full text linkA demand of marine outfall system have been much increased for the effective disposal of the wastewater due to population and industrial development at the coastal areas. The outfall system discharges primary or secondary treated effluent into coastline or at the deep water, or between these two.
Thus there have been growing interests about plume behaviour around the outfall system. Plume or Jet discharged from single-port or multi-port diffuser impacts seriously on coastal environment. Near field mixing characteristics of discharged water field using CORMIX model has been studied for effective outfall design and indicated the result that various conditions on ambient current, depth, flow rate, effluent concentration, diffuser specification, port specification etc. influence the near field dilution and mixing. This results might contribute to deal with serious water quality problems caused by the ocean discharge.
It has been founded the early dilution is important, especially for the numerical simulation by a depth averaged hydrodynamic model of diffusion mechanism at the existing flow field and applied it to the Pusan Jungang Effluent Outfall System, which is planned to be in the Gamchun harbour and will be completed in 2011. The model output showed the trajectoral variation of near-filed dilution and mixing behaviour for four temporary stations located coastline and deep water under 4 cases including flow rate the effect of different and port diameter. The variation of dilution, wastefield thickness and rise height have been simulated and found the best dilution condition under the different displacement of outfall system. On the basis of these outputs we proposed a proto type of the optimum outfall system type and the location of the diffuser.ABSTRACT = ⅰ
NOMENCLATURE = ⅴ
LIST OF TABLES = ⅸ
LIST OF FIGURES = ⅹⅰ
1. 서론 = 1
1.1 연구의 배경 및 필요성 = 1
1.2 연구의 동향 = 4
1.3 연구의 목적 = 7
1.4 연구의 내용 = 7
2. 처리수의 해양 방류 사례 분석 = 9
2.1 국내의 해양방류 = 9
2.2 세계의 해양방류 = 13
3. 해양방류 시스템 설계의 기초이론 = 26
3.1 해양방류 시스템의 개요 = 26
3.1.1 해양방류의 수질기준 및 종류 = 26
3.1.2 해양방류시스템의 구성 = 30
3.1.3 확산관의 종류 및 설계요건 = 31
3.1.4 방류공의 종류 및 설계요건 = 34
3.2 난류제트 이론 = 36
3.2.1 난류제트의 환경조건 및 기본 가정 = 36
3.2.2 원형 부력제트와 슬롯 부력제트 = 43
3.3 수중다공확산관 이론 = 49
3.4 근역혼합 및 희석의 특성 = 53
4. 해양방류 시스템 설계인자의 분석 = 59
4.1 수치모델의 구성 = 59
4.2 방류인자별 민감도 분석 = 66
4.3 해양방류 시스템의 현장적용 = 91
4.3.1 현장실험조건 = 91
4.3.2 현장적용 및 분석 = 108
5. 해양방류수의 확산실험분석 = 144
5.1 해수유동 및 방류수 확산 모델 = 144
5.1.1 해수유동 모델 = 144
5.1.2 오염확산모델 = 148
5.2 수치모델의 구성 = 151
5.3 해양방류수의 확산 실험분석 = 154
5.3.1 해수유동실험 = 154
5.3.2 방류수 확산 실험 = 160
6. 결론 및 제언 = 173
6.1 결론 = 173
6.2 제언 = 176
참고문헌 = 178
감사의 글 = 18
Adsorption Characteristics of Natural powdered Oil Absorbent for Marine Oil Pollution
Full text linkThe amount of petroleum consumption has been increased according to the industrialization and it leads to the increase of the possibility of marine oil pollution. In Korea, some countermeasures including oil skimmer, gelling agent and herding agent of oil have been used for the remediation of the pollution. However, most of them have lots of shortcomings in the application under in-situ condition, because they are sensitive to the situation such as geographical feature, the wind and the tide. In reported literature, the natural powdered oil absorbent which is made of peat moss is an effective mean to clean spilled oil from lake or coast. However, the peat moss is a natural resource which is only produced from a specific cold weather area like Canada. This indicates that the alternative materials which is readily obtained from everywhere are needed for powdered oil absorbent. Therefore, in the study, some natural materials including pine leaves and straw are tested as the alternative materials for the absorbent. The raw materials were dried and treated by heat at various temperature during sevaral periods and then, shattered by a grain cracking machine. The oil sorption capacity of the prepared materials was compared according to the methods of heat treatment and their size. The amount of hydrogen cyanide from combustion of the absorbents was measured to confirm their final disposal methods. The biodegradability test of the absorbents was carried out to evaluate if the use of absorbents cause a side pollution in the coast. The heat treatment of pine leaves enhanced the capacity of oil sorption and decreased the water sorption. The maximum oil sorption was observed when the material was treated at 180℃ for 60 min. The amount of hydrogen cyanide from the combustion were low as 0.09ml/g, 0.07ml/g for pine leaves and straw, respectively. It means that the final disposal by combustion might be feasible. The amount of organic carbon which was extracted from pine leaves during 7 days was amount to 0.015g organic carbon from one gram of pine leaves, but the degradation was as fast as glucose. It is conclude that the pine leaves can be used as a good raw material for the powdered oil absorbent like peat moss.목차 = ⅰ
List of Figures = ⅳ
List of Tables = ⅵ
ABSTRACT = ⅶ
제 1장. 서론 = 1
1.1 연구 배경 및 목적 = 1
1.2 연구의 내용 및 범위 = 3
제 2장. 문헌 연구 = 4
2.1 국내 해양오염현황 = 4
2.2 해양오염방지기술 = 7
2.2.1 물리적 방제기술 = 7
2.2.2 화학적 방제기술 = 11
2.2.3. 생물학적 방제기술 = 13
2.3 유류의 흡착과 분해 메카니즘 = 13
2.3.1 유류의 성상 = 13
2.3.2 유류의 흡착 메카니즘 = 14
2.3.3 유류의 분해 메카니즘 = 15
2.4 유흡착제의 소수화처리 = 21
제 3장 실험 및 장치 = 22
3.1 재료 = 22
3.2 실험장치 = 23
3.3 분석 항목 및 방법 = 24
3.3.1 흡수량 및 흡유량 실험 = 24
3.3.2 소각 실험 = 25
3.3.3 용출성분의 생분해성 실험 = 26
제 4장. 결과 및 고찰 = 27
4.1 흡수량 및 흡유량 평가 = 27
4.1.1 각 재질의 흡유량 평가 = 27
4.1.2 각 재질의 흡수량 평가 = 30
4.1.3 흡유능/흡수능의 비교 = 32
4.2 열처리를 통한 흡유량 및 흡수량 변화 = 35
4.2.1 낙엽솔잎의 흡유량 및 흡수량 변화 = 35
4.2.2 볏짚의 흡수량 및 흡유량 변화 = 42
4.3 소각 실험 평가 = 48
4.4 용출성분의 생분해성 평가 = 49
4.4.1 솔잎성분의 용출 실험 = 49
4.4.2 낙엽솔잎의 용출성분과 대조군의 분해도 평가 = 51
제 5장. 결론 = 55
참고문헌 = 5