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An Experimental Study on the Pre-cooling and Melting by the Low Temperature Vacuum Heat Transfer
Full text linkTo maintain the freshness of agricultural products, because of stand away between producer and its consumer, we need refrigeration system that can supply to consumer at cold chain as soon as gathering at the place of production.
General refrigeration system consists of refrigeration chamber or low temperature store. But the vacuum technology to cool down the products have the merits its rapid cooling down interval and saved refrigerator system.
Pre-cooling system suggests possibility get low pre-cooled temperature, suitable for fishes, meat, vegetables, fruit etc. Pre-cooling system have the advantage in quality maintenance through rapid refrigeration of ferment directly generate heat. Vacuum pre-cooling system's principle is that water saturated temperature is lowered according to the vacuum pressure established in the storage chamber, the temperature of products will be lowered consequently, due to the latent heat of evaporation of stored products. To establish appropriate vacuum in vacuum stored chamber, the rotary type vacuum pump was used to establish the desired vacuum pressure in the stored chamber, then water-driven gas suction ejector was used to maintain its vacuum pressure.
A number of thawing methods in current use have several disadvantages in melting time, discoloration and damage due to oxidation from the presence of warm air, weight loss caused by drying, partial cooking of the food extremities due to excess heat and high floor space requirements, capital costs and running cost.
These damages to efficient processing are, it is claimed, either eliminated or improved by the vacuum thawing.
An experimental study on the pre-cooling for the sprouted beans and cabbage and melting for hair tail and yellow-croaker by the low temperature vacuum system were carried out.
The cabbage cooling time with this pre-cooling vacuum system took about 60 minutes to reach from 23.2 (℃) to 4.5 (℃) at 5 (mmHg abs.). In case of sprouted beans took about 60 minutes to reach from 17.9 (℃) to 1.0 (℃) at 5 (mmHg abs.).
The quality for the cabbage and sprouted beans before and after experiments were in good condition with small weight loss.
The yellow croaker melting time with this low temperature vacuum melting system took about 170 minutes to reach from -10.3 (℃) to -0.8 (℃) at 20 (mmHg abs.). In case of hair tail took about 220 minutes to reach from -12.2 (℃) to 0.0 (℃) at 20 (mmHg abs.).
The quality for the yellow croaker and hair tail before and after experiments were in good condition with small weight loss.
The vacuum pre-cooling and melting system have the merit to compare with present systems in their short intervals to cooling down and to melt without any quality losses.목차
Abstract = iii
사용기호 = vi
제1장 서론 = 1
1.1 본 연구의 목적 = 1
1.2 종래의 연구 = 10
1.2.1 예냉의 종래의 연구 = 10
1.2.2 해동의 종래의 연구 = 13
제2장 실험장치 및 실험계통 = 15
2.1 실험장치의 개요 = 15
2.2 실험장치의 각부 상세 = 18
2.3 냉동수산물의 비열 및 동결잠열 = 33
2.3.1 냉동수산물의 비열 = 33
2.3.2 동결잠열 = 35
제3장 실험결과 및 고찰 = 39
3.1 진공장치의 무부하 추기특성 = 39
3.2 진공예냉 실험결과 = 42
3.2.1 콩나물의 예냉 = 46
3.2.2 배추의 예냉 = 50
3.3 진공해동 실험결과 = 58
3.3.1 갈치의 해동 = 63
3.3.2 조기의 해동 = 66
제4장 결론 = 72
참고문헌 = 74
학술활동 및 산학협동연구 실적 = 76
Appendix I : Specification of experimental apparatus = 77
Appendix II : Detail drawing for experimental apparatus = 78
Appendix III : Operating manual for experimental apparatus = 79
謝
(A) Study on Implementation of Low Noise Amplifier Using Resistive Decoupling Circuit and Series Feedback
Full text linkThe importance of LNA(Low Noise Amplifier) input matching depends on the application. In the design of LNA for mobile communication base station or satellite receiver system, the LNA input match is typically designed to achieve minimum noise figure and the overall system performance is probably not substantially affected by the input mismatch. In the system which a filter or duplexer precedes the LNA, however, the filter's performance can be degraded by the input mismatch and system performance may suffer. In this situation it is desirable to design the input match for low VSWR(Voltage Standing Wave Ratio) as well as minimum noise figure.
In this thesis, therefore, a low noise amplifier has been implemented by resistive decoupling circuits and series feedback, which is operating at 2.13∼2.16 GHz for IMT-2000 front-end receiver. Undesired signals in low frequency band are dissipated by the resistive decoupling circuits in the matching network. Also by adopting this design method, the stability of the LNA(Low Noise Amplifier) is increased and the input impedance matching is improved. Series feedback added to the source leads of a transistor keeps the low noise characteristics and drops the input reflection coefficient of the amplifier simultaneously. In addition, it satisfy the unconditionally stable condition of the LNA in frequency bandwidth.
The LNA consist of the GaAs FET ATF-10136 for the low noise stage and the VNA-25 which is internally matched MMIC for high gain amplification stage. The LNA is fabricated with both the RF circuits and the self-bias circuits on the Teflon substrate which has 3.5 permittivity and 0.5 mm thickness.
The measured results of the LNA which is fabricated using above design techniques are presented more than 30 dB in gain, 17.5 dBm output in 1 dB gain compression point and lower than 0.7 dB in noise figure, 1.5 in input·output SWR(Standing Wave Ratio).Abstract = ⅰ
Nomenclatures = ⅱ
Abbreviations = ⅲ
제1장 서론 = 1
1.1 연구 배경 = 1
1.2 연구 목적 = 1
제2장 초고주파 증폭기의 설계 이론 = 3
2.1 안정성 = 3
2.2 증폭？袖？ 전력 이득과 전력 이득원 = 6
2.3 일정 정재파비원 = 18
2.4 증폭기의 잡음지수 및 잡음지수 원 = 19
2.5 고주파 전력 증폭소자의 특성 = 23
2.6 고주파 전력 증폭소자의 선택 = 25
제3장 저잡음 증폭기의 설계 = 28
3.1 직렬 피드백 = 29
3.2 단락 스터브에 의한 직렬 피드백 효과 = 35
3.3 저항성 감결합회로 = 36
3.4 자체 바이어스 회로 = 37
3.5 저잡음 증폭기의 구성 = 38
제4장 저잡음 증폭기의 제작 및 측정 = 41
4.1 시뮬레이션 = 41
4.2 제작 및 실험 = 42
제5장 결론 = 45
참고문헌 = 4
(A) Study on the Liner Bill of Lading in English Law and Case
Full text linkA Study on Liner Bill of Lading
in English Law and Case
It is very interesting to note that neither the Bills of Lading Act 1855 nor any Act has defined the meaning of 'Bill of Lading'. But we can find that definition in Article 1 of the Hamburg Rules as follows:
'Bill of Lading' means a document which evidences a contract of carriage by sea and the taking over or loading of the goods by the carrier, and by which the carrier undertakes to deliver the goods against surrender of the document, A provision in the document that the goods are to be delivered to the order of a named person, or to order, or to bearer, constitutes such an undertaking.
As a matter of fact, the document which developed to resolve the obvious conflicts between the interests of buyer and seller was the bill of lading. The bill of lading provides the seller with some security against default by the buyer, and provides the buyer with some assurance of performance of the seller before the buyer is required to make payment. So to speak, the B/L provides some extent protection for both seller and buyer.
In the view of the law, a bill of lading has various aspects: First, it is very good evidence of the contract of carriage of goods, though not the contract itself, for the contract is usually concluded before the bill of lading is signed. Second, it is a receipt for the goods shipped and contains certain admissions as to their quantity and condition when put on board. Third, it is a document of title. Therefore we cannot normally be obtained the goods without the delivery of the document.
However, there are various types of bill of lading. Specially, this is a study on the construction of Liner Bill of Lading(Code name : CONLINEBILL) adapted by BIMCO(The Baltic and International Maritime Conference) and used a basic bill of lading in the liner ship's operating. By that reasons, applying to English Law, Case and 6 rules of construction in the interpretation of clauses, I make a wider and deeper study of claims and obligations of Contract Parties under Carriage of Goods by Sea Act 1971(COGSA 1971).
For reference, The Hague-Visby Rules consist of the original Hague Rules amended by the Visby Amendments, but the rules are more properly referred to as "The Protocol to amend the International Convention for the Unification of Certain Rules of Law relating to Bills of Lading signed at Brussels on 25th August 1924 - Brussels 23rd February 1968". COGSA 1971 applies the original Hague Rules incorporating the Visby Amendments as the Schedule.
In concrete terms about this study, Chapter 1 outlines the purpose of this study as well as the scope. Chapter 2 deals with the general study about the bill of lading. This chapter outlines definition, function, kind and nature of the bill of lading and considers the standard rules of the construction to the bill of lading for the clarification of CONLINEBILL.
Proceeding to the main issue, Chapter 3, 4, 5 and 6 deal with the construction of CONLINEBILL. These divided chapters make a term of significance for the each clause by means of the classification of CONLINEBILL's legal construction. Chapter 3 has 3 categories of legal construction. Section 1 in Chapter 3 includes the conclusion of contract such as General Paramount Clause and Jurisdiction Clause. Section 2 accounts for the real structure in CONLINEBILLSubstitution of Vessel, Transhipment and Forwarding Clause. The last section 3 explains the personal structure in Definition Clause. Then I try to grasp the meaning of each clause through the original text, the translated text into Korean and the explanation of the clauses gradually.
It deals with the rights and obligations of shipowner in Chapter 4 and those of Merchant in Chapter 5. Chapter 6 considers danger management of CONLINEBILL such as General Average and Salvage Clause and Both-to-Blame Collision Clause.
The last Chapter 7 conclude the characteristic of CONLINEBILL as well as summary of the previous chapters and deals with the comparative study between COGSA 1971 and CONLINEBILL.
As follows the characteristics of CONLINEBILL are concluded from the current study. First, this bill of lading exclude General immunity clause, Seaworthiness clause, The limitation of liability though including important these clauses in the Hague-Visby Rules. Second, this bill of lading specially provides Identity of Carrier clause clarified the subject of responsibility in carriage of goods by sea, Exemptions and Immunities of all servants and agents of the Carrier, Carrier's option by means of containers or similar articles of transport used to consolidate goods and unitization of receptacles such as container, trailer and transportable tank. Third, Lighterage clause, Loading, Discharging and Delivery clause and Freight and Charge clause are to rationalize through the settlement of the company's account. Fourth, as CONLINEBILL is adapted by BIMCO which has the international reputation and approved by shipping industries, the bill of lading aims to develop the shipping communities and tries to make a standard bill of lading based upon the International Convention for the Unification of Certain Rules relating to Bills of Lading
(An) Empirical Study on the Shipper's Decision Making Process of Liner Shipping Services : Primarily on the Information Search
Full text linkShipping industry continues to face dramatic changes in its environment, ranging from development in containerization, computerization and tele -communications to the emergence of global marketplace.
Perhaps the most significant trend - representing both a threat and oppor- tunity - is the increasingly competitive nature of shipping service market.
As the deregulation in the world shipping industry has continued, environments such as political, economic, and technological changes affecting shipping industry have made shippers-carriers relationship as a major concern for container shipping company.
As shown in The U.S. Ocean Shipping Reform Act of 1998, most of world container shipping companies have perceived customers satisfaction as a source to enhance the competitive advantage in a fierce competitive situation.
In order for the shipping companies to cope with those improvements and challenges, they should analyze and clarify customer's DM(decision making) process for the purchase of container shipping service.
The purpose of this study is to explore the degree of relationship between the determinants of shipper's DM process and the information search activities for the container shipping service.
An empirical study was carried out to examine how shippers make purchase decision by the provision of statistical evidence showing the impacts of involvement, experience and knowledge on the information search activities.
The frequency analysis and Pearson's correlation coefficients were used to find out overall nature of the data. To test the formulated hypothesis, multiple regression analysis, factor analysis, t-test and SEM(Structural Equation Modeling) were used.
The major research findings from the study were found as follows1) The shipping company should understand the customer's DM process in order to find out the determinants of information search behavior.
2) As the marketing concept continues to change from transactional marketing concept to relationship marketing concept, the shipping company should adopt the effective marketing strategy to enhance the relationship between shipping companies and shippers.
This study has some limitations in the respondents who do not cover all kinds of shippers. More generalized research model for shipper's DM process and customer's satisfaction needs to be developed.1) The degree of shipper's involvement in purchasing shipping services was found to be a discriminating variable affecting the information sources consisting of personal and non-personal information sources.
2) The positive relationship was found between the experiences on shipping services and non-personal information sources.
3) It was observed that as people had more experience searching for information , the more in depth their searches became
4) There existed a positive relationship between knowledges on shipping services and information search.
5) According to the SEM analysis, the shipper's information search on shipping services was also found to have a great influence on the shipper's purchasing behavior. The shipper's search was resulted in positive customer satisfaction.
On the basis of the results, managerial implications for container shipping company can be provided as follo
Analysis of LPG Spray Diffusion Flame in Constant Volume Combustion Chamber
Full text linkThe need for more fuel efficient and lower emission vehicles has driven the technical development of alternative fuels such as Liquefied Petroleum Gas which is able to meet the limits of better emission levels without many modifications to current engine design. This study addresses the LPG spray and diffusion flame in a constant volume combustion chamber which has an impinging plate. The spray and flame images are visualized and compared with diesel and gasoline sprays in the condition of wide ambient gas pressure ranges. The high speed digital camera is used to take the flame images. The injection pressure is generated by Haskel air driven pump, and the trap pressure is adjusted by pumping air into a constant volume chamber. The LPG spray and flame photographs are compared with those of gasoline and diesel fuel at the same conditions, then the spray and flame development behavior is analyzed. The LPG spray photos show that the dispersion characteristics depend very sensibly on the ambient pressure soon after injection. In a low trap pressure, LPG fuel in liquid phase evaporates quickly and does not reach down easily to the impinging plate having a hot coil for ignition. Those make the temperature and the equivalence ratio very low near the ignition coil and then make the ignition hard. On the other side, a high trap pressure case, the spray leaving the nozzle is remaining as liquid phase like a diesel fuel spray. The LPG gather around the ignition site on the plate, which makes an intensive flame near the plate. It is considered that the behavior of LPG spray might be more dependent on the gas flow motion than the spray injection velocity in the cylinder with low trap pressure. That phenomenon will be appear easily on the early injection of a direct injection LPG engine. Therefore, the chamber and intake port shape might be careful to get a suitable flow motion for a direct injection LPG engine design.목차
ABSTRACT
I. 序論
1.1 연구의 배경 및 목적 = 1
II. LPG 연료의 성질
2.1 LPG연료의 물리적 성질 = 5
2.2 LPG연료의 연소 = 8
III. 實驗裝置및 方法
3.1 실험장치의 구성 및 실험조건 = 9
IV. 實驗結果및 考察
4.1 LPG 분무확산연소특성 = 12
4.1.1 분위기압력변화에 따른 연소특성 = 12
4.1.2 분사압력변화에 따른 연소특성 = 15
4.2 가솔린 분무확산연소특성 = 30
4.2.1 분위기압력변화에 따른 연소특성 = 30
4.2.2 분사압력변화에 따른 연소특성 = 32
4.3 디젤 분무확산연소특성 = 46
4.3.1 분위기압력변화에 따른 연소특성 = 46
4.3.2 분사압력변화에 따른 연소특성 = 47
4.4 LPG, 가솔린, 디젤의 분무연소특성 비교 = 67
4.4.1 분무와 착화특성 = 67
4.4.2 연소특성 = 70
V. 結論 = 72
參考文獻 = 7
Development of an Auto-Trim Control System for Ro-Ro Ship Carrying Heavy Cargoes
Full text linkIn Ro-Ro ship carrying heavy cargoes, it is very important to maintain a certain level of aft draft and the proper trim through the entire loading or discharging process. Some kinds of manual ballast control system have been generally applied so far to this practice in Ro-Ro ship. However, there is need to develop a so-called Auto-Trim Control System using some computer technology to improve the operation of those existing systems.
This paper aims at developing an Auto-Trim Control System especially for Ro-Ro ship carrying such heavy cargoes including hot coils and steel plates. The author carried out some systems analysis and design for developing the system by examining and reflecting the practices of the entire loading and discharging process.
Then a user-friendly Auto-Trim Control System has been built by interfacing the Valve Remote Control system and Tank Level & Draft Measuring system with itself. The author also provides some excellent results on the performance of the system by reporting the records of installing the system on board 4 Ro-Ro ships.Abstract
제 1 장 서론 = 1
1.1 연구의 배경 = 1
1.2 연구의 목적 = 2
제 2 장 시스템의 개요 = 3
2.1 중량화물 선적 Ro-Ro 선 하역 작업의 기본개념 = 3
2.2 Auto-Trim Control System의 기본개념 = 7
2.3 시스템 구성도 = 10
제 3 장 선미흘수 및 트림 제어 알고리듬의 개발 = 11
3.1 탱크 배치도 = 11
3.2 탱크 배정 우선순위 = 11
3.3 탱크 선택 규칙 = 12
제 4 장 Auto-trim Control System 개발 = 15
4.1 시스템 소프트웨어 구성 = 15
4.2 시스템 설계 = 16
4.3 밸브 및 펌프 작동 절차 = 21
4.4 시스템 구현 = 37
제 5 장 프로그램 실행 예 = 42
5.1 통신상태 표시줄 = 42
5.2 선박상태 표시줄 = 44
5.3 프로그램 작동 = 45
제 6 장 결론 = 58
참고문헌 = 6
(A) Study on the Speed Control of the Diesel Engine with a Digital Governor
Full text linkA Study on the Speed Control of the Diesel
Engine with a Digital Governor
The marine propulsion diesel engine with mechanical-hydraulic governor has been widely used to control the engine speed.
But these days, marine propulsion disesel engine tends to become slower in speed and longer in stroke for higher engine efficiency, so it leads to difficulty for the mechanical-hydraulic governor to regulate the speed of high power engine with long stroke and low speed, because of the jiggling caused by rough fluctuation of rotating torque and the hunting by long dead time occurred in fuel combustion process.
To cope with these difficulties, engine manufacturers highly reco- mmend to adopt digital governor for the longer stroke and slower speed engine.
Most of the digital governors adopt the feedback control method in which the only engine rpm-signal is used, but it does not work effectively when the load variation occurs.
In this paper, the author considers the perturbation of engine parameters as the modeling uncetrainties and designs not only the robust speed controller but fuzzy speed controller for the engine.
Through the computer simulation, the performances of both controlle- rs are compared and reviewed
A study on legal regime relating to ownership of excavated treasure ship
Full text linkCultural Property Preservation Bureau of Korea excavated the massive shipwreck and her cargo from 1976 to 1984 sunken under Jeungdo Island, Sinan County located in the southwest area of the Korean peninsula. It was the first systematic underwater excavation in Korea, and one of the richest underwater discovery in the world. According to the reference materials, more treasure shipwrecks are assumed to be sunk under seaside of Korean peninsula. Such as, Donskoy near Ulleung Island, Kow Shing near Ul Island, and Yamashita treasure ship off Korean peninsula, etc. The excavations of these treasure ship are likely to raise ownership dispute between private finders and government authority, and between ship owner and excavater due to lack of knowledge and awareness of related laws and regulations. Therefore, this study aims to examine existing legal regimes related to the excavated treasureship. And also it tries to suggest a new proactive measure to prevent the most likely ownership disputes between interested parties.목차
ABSTRACT = i
제1장 서론 = 1
제2장 보물선과 관련법 = 3
1. 보물선의 정의 = 3
2. 한국의 국내법 = 4
2.1 국유재산에매장된물건의발굴에관한규정 = 5
2.2 문화재보호법 = 7
2.3 국제분쟁시 참조해야 할 기타 국내법 = 10
3. 주요국의 국내법 = 15
4. 관련 국제법 = 19
4.1 유네스코의 수중문화유산보호협약 = 19
4.2 해양법협약(The Law of The Sea Convention) = 24
4.3 1989년 국제해난구조협약 = 29
4.4 기타 참조 협약 = 33
제3장 보물선 관련 국제분쟁의 해결 = 36
1. 국제 분쟁 해결에서 검토해야 할 요소들 = 36
1.1 인양장소 = 36
1.2 침몰선의 종류 = 40
1.3 인양물의 ？쓿？ = 41
1.4 기타 = 41
2. 국제분쟁의 해결방법 = 41
2.1 외교적 해결방법 = 42
2.2 법적인 해결방법 = 44
제4장 결언 및 제안 = 48
1. 소유권 분쟁 = 48
1.1 국내 분쟁 = 49
1.2 국제 분쟁 = 50
2. 결언 = 51
3. 제안 = 53
참고 문헌 = 54
참고 홈페이지 = 56
부록 = 58
I. 보물선 인양 사례 = 58
1. 외국의 보물선 = 58
2. 국내의 보물선 = 60
II. 가정 (Hypothesis) = 65
1. 고승호의 소유권 분쟁 = 65
2. 분쟁의 해결 = 66
III. LOF 2000의 소개 = 68
1. 서식 = 68
2. 서식 번역 = 7
(An) Empirical Analysis of the Certification Role of Venture Capitalists in the Process of Going Public
Full text linkThis study explores the certification role of venture capitalists in the process of going pubic. This role of venture capitalist is empirically examined by utilizing 244 firms listed on the KOSDAQ market from July 1996 to May 2000. In order to examine the certification role of venture capitalists, we classify the sample into two groups: venture capital-backed firms and nonventure capital-backed firms. Using t-test, the difference on initial returns, business history, venture capitalist's holding between two groups after listing on KOSDAQ is analyzed.
The major results of this thesis are as follows. First, we find that initial excess returns of two groups on the first trading day are not significantly different. However, as the time after the listing day passes, venture capital-backed firm's excess return statistically shows higher than nonventure capital-backed firm's abnormal return. In KOSDAQ's IPOs market, venture capitalists could not reduce the information asymmetry between investors and issuing firms. This finding is different from the results of the existing studies which exhibited the difference between venture capital-backed firms and nonventure capital-backed firms in the US IPOs market.
Secondly, we explore the grandstanding effect, which is the hypothesis suggested by Gompers(1996). He argues that venture capital-backed firms will go public earlier than nonventure capital-backed firms. Our empirical analysis shows that the business history of venture capital-backed firms is shorter than that of nonventure capital-backed firms. Therefore, our result documents that the grandstanding phenomenon appears in Korea. The firms which KTB(Korea Technology Bank), Korea's largest venture capital firm, backed went public earlier than those backed by other venture capital firms. This result is different from Gompers(1996).
Thirdly, this study also investigates the changes of venture capitalists' holdings between KTB-backed firms and other venture capitalist-backed firms before and after going public in order to analyze the signaling effect. The holdings of KTB-backed firms are decreased more than those of other firms. This finding is different from Gompers(1996) which more reputable venture capitalists would not sell their holdings after IPOs.Abstract = ⅴ
Ⅰ. 서론 = 1
Ⅱ. 벤처캐피탈의 역할 = 4
2.1 자금지원기능 = 4
2.2 성장지원기능 = 5
2.3 기업공개지원기능 = 7
2.4 기타 벤처캐피탈의 역할 = 11
Ⅲ. 표본선정과 연구가설 설정 = 15
3.1 표본선정 = 15
3.2 가설 설정 = 16
Ⅳ. 실증분석 = 20
4.1 단기 초과수익률 차이분석 = 20
4.1.1 등록일 초과수익률 차이분석 = 21
4.1.2 등록일 이후 30일간 초과수익률 차이분석 = 22
4.1.3 수정된 등록일 이후 30일간 초과수익률 차이분석 = 27
4.2 벤처캐피탈의 유형별 수익률 분석 = 31
4.3 초과수익률의 원인에 대한 회귀분석 = 33
4.4 벤처캐피탈의 조기업적과시현상 분석 = 36
4.4.1 IPO까지의 소요기간 차이분석 = 36
4.4.2 벤처캐피탈의 소유지분 변동분석 = 38
Ⅴ. 결론 = 41
참고문헌 = 44
부록 = 4
Real-time Cycle-based Delay Predictive Modeling on the Signalized Intersections in Pusan Area
Full text linkToday the arterials play a key role in urban transportation. However, they experience a severe congestion with the mixed traffic on the signalized intersections regardless of the peak periods. Thus, the purpose of this study is to identify the real-time cycle-based traffic characteristics, construct the delay predictive models (DPM) depending on the time-periods and finally determine the ranking of the factors affecting the delay on the signalized intersections in urban area.
From the analyses of the real-time traffic characteristics, the construction and verification of delay models, and the determination of the ranking in the factors on the delay models, the following results were obtained :
ⅰ) Traffic flow did not show a distinct difference depending on the time periods. Rather, more traffic flows were concentrated on the signalized intersections in the non-peak periods when compared with the on-peak periods.
ⅱ) The volume-to-capacity (v/c) ratio was proved to be a key variable in delay model construction on the signalized intersection. Also, the variables used in the model construction showed the appropriateness in the travel characteristics on the signalized intersections.
ⅲ) Most of the delay models were shown to have a higher explanatory power for the delay predictive model construction and verification with the high R² values.
ⅳ) The left-turn link showed a key factor affecting delay on the 3-leg signalized intersections, but the thru link showed a key factor affecting delay on the 4-leg intersections. Also, the passenger car showed a key factor affecting delay on the 3-leg or 4-leg signalized intersections.ABSTRACT = ⅰ
NOMENCLATURE = ⅴ
LIST OF FIGURES = ⅶ
LIST OF TABLES = ⅷ
1. 서론 = 1
1.1 연구 배경 = 1
1.2 연구목적 및 필요성 = 1
1.3 기존연구 고찰 = 2
1.4 자료수집 및 분석방법 = 4
2. 교통특성분석 = 6
2.1 통행특성분석 = 7
2.2 도로특성분석 = 11
2.3 신호특성분석 = 12
2.3 지체특성분석 = 13
3. 모형구축 및 검증 = 19
3.1 모형구축방법 = 19
3.1.1 변수의 정의 = 19
3.1.2 다중회귀모형 구축절차 = 20
3.1.3 모형의 적합성 = 20
3.2 모형구축 = 21
3.2.1 3지 교차로의 지체예측모형 = 21
3.2.2 4지 교차로의 지체예측모형 = 22
3.3 모형검증 = 23
3.4 요인분석 = 26
4. 결론 및 향후연구과제 = 30
참고문헌 = 3