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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of Navigation and Port Research
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Journal DOI :
Korean Institute of Navigation and Port Research
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Volume & Issues
Volume 28, Issue 9 - Dec 2004
Volume 28, Issue 10 - Dec 2004
Volume 28, Issue 8 - Oct 2004
Volume 28, Issue 7 - Sep 2004
Volume 28, Issue 6 - Aug 2004
Volume 28, Issue 5 - Jun 2004
Volume 28, Issue 4 - Jun 2004
Volume 28, Issue 3 - Apr 2004
Volume 28, Issue 2 - Mar 2004
Volume 28, Issue 1 - Feb 2004
Selecting the target year
Ship Collision Avoidance Support Model in Close Quarters Situation( I )
Yang Hyoung-Seon ; Yea Byeong-Deok ;
Journal of Navigation and Port Research, volume 28, issue 10, 2004, Pages 827~832
DOI : 10.5394/KINPR.2004.28.10.827
Up to now a lot of the study on ship collision avoidance systems have proceeded actively. However the rate of ship collision accidents hasn`t decreased yet. If there is collision risk in close quarters situation in spite of maneuvering ship for collision avoidance according to the system, only use of TCP A and DCP A as input factor for collision risk decision is not useful to avoiding collision action. For the recent 5 years by the analysis of first observation distance about approaching ship in domestic collision accidents, nearly
of accidents is close first observation less than 2 miles. Therefore it is essential part for safety navigations to study for collision avoidance action in close encounter. In this paper, as a fundamental study of supporting collision avoidance maneuvering for navigators, we proposed ship collision avoidance support model in close quarters situation through analysis qf collision accidents to effectively get rid of the causes.
Introduction of Optimum Navigation Route Assessment System based on Weather Forecasting and Seakeeping Prediction
Park Gun-il ; Choi Kyong-Soon ; Lee Jin-Ho ; Kim Mun-Sung ;
Journal of Navigation and Port Research, volume 28, issue 10, 2004, Pages 833~841
DOI : 10.5394/KINPR.2004.28.10.833
This paper treats optimal route assessment system at seaway based on weather forecasting and wave measurement through observation Since early times, captain & officer have been sailing to select the optimum route considering the weather and ship status condition empirically. However, it is rare to find digitalized onboard route support system whereas weather fax or wave and swell chart are utilized for the officer, based on officer`s experience. In this paper, optimal route assessment system which is composed of voyage efficiency and safety component is introduced. Optimum route minimized ETA(estimated time of arrival) and fuel consumption is evaluated for efficient voyage considering speed loss and power increase based on wave added resistance of ship. In the view point of safety, seakeeping prediction is performed based on 3 dimensional panel method. Basically, the weather forecast is assumed to be prepared previously in order to operate this system.
A Cruise Ship Design with Residence Concept through Top-Down Sequential Procedure
Lee Han-Seok ; Byun Lyang-Soun ; Cho Seong-Cheol ; Kim Dong-Joon ; Hyun Beom-Soo ; Choi Kyung-sik ;
Journal of Navigation and Port Research, volume 28, issue 10, 2004, Pages 843~850
DOI : 10.5394/KINPR.2004.28.10.843
This study introduces a new cruise ship design model with residence concept by carrying out a specific design procedure on the regionally and culturally characterized cruise model. Cruise ship design requires a combined approach with architectural design skills, shipbuilding techniques and even the knowledge of business management. Contrary to the traditional cargo ship design in which the design of residence area on the top of cruise ship is performed first and then the lower part of the ship structure is determined as a final step, a top-down procedure for the conceptual ship design is adopted.
A New Method for the Acquisition of Deviation Coefficients B and C at a Single Magnetic Heading
Yim Jeong-Bin ; Sim Yeong-Ho ;
Journal of Navigation and Port Research, volume 28, issue 10, 2004, Pages 851~859
DOI : 10.5394/KINPR.2004.28.10.851
This paper describes a new method for the acquisition of deviation coefficients, B and C, using a single observed deviation at a fixed compass heading. At first it discusses some problems in the synthesis of two coefficients, B and C, from various observed deviation values in the four USS warships. Then, new theories and procedures for optimal coefficients,
are dealt with and then the validity of the proposed method are evaluated. The result of findings indicates that the approximated coefficients,
can give optimal approximation to an single observed deviation.
An Analysis of Natural Lacquer Characteristics and EM Wave Absorber`s Absorption Characteristics Using Natural Lacquer as a Binder
Kim Dong-Il ; Choi Dong-Han ; Kim Ki-Man ;
Journal of Navigation and Port Research, volume 28, issue 10, 2004, Pages 861~867
DOI : 10.5394/KINPR.2004.28.10.861
Generally, a silicone rubber and a chloride polyethylene(CPE) have been used as a binder for high-performance composite EM( Electromagnetic) wave absorbers. In this study, the EM wave absorption abilities for natural lacquer which is newly suggested as a binder were investigated MnZn ferrite composite EM wave absorbers mixed with the natural lacquer were prepared and their absorption ability was also investigated. The prepared MnZn ferrite composite EM wave absorbers mixed with natural lacquer showed an improved EM wave absorption characteristics compared with MnZn ferrite EM wave absorbers mixed with the conventional binders. such as a silicone rubber and a chloride polyethylene(CPE). The matching frequency and the absorption ability of EM wave absorbers varied with the thickness of them.
Analysis of Radio Propagation Environment in Busan Area for DTV Service
Sung Tae-Kyung ; Weon Young-Su ; Cho Hyung-Rae ; Kim Ki-Moon ;
Journal of Navigation and Port Research, volume 28, issue 10, 2004, Pages 869~874
DOI : 10.5394/KINPR.2004.28.10.869
Digital TV broadcasting`s resolution or tone quality is very excellent than analog broadcasting and has many advantages including various multimedia functions such as home shopping, home banking, internet search, telecommuting, VOD, etc. In this study, it is essential to analyze the regional electromagnetic environment before Digital TV broadcasting, and therefore we analyzed Busan area`s limitation using ETRI propagation model. For maintaining high-quality Digital TV signals, we measure electric field intensity wide and far in Busan including mountains area and high-rise buildings. Generally, it has lower value by a standard ETRI propagation model than simulated value about standard model, but distribution pattern are similar with it. Compared theoretical values with the measured results, they have similar values for flat area but very different values for crowded city area and mountains area So we conclude that ETRI propagation model and theoretical model are not suitable for Busan in a free space.
Design and Fabrication of the SHP Mixer for the 5 GHz Band Wireless Communication System
Kim Kab-Ki ; Ahn Young-Sup ;
Journal of Navigation and Port Research, volume 28, issue 10, 2004, Pages 875~879
DOI : 10.5394/KINPR.2004.28.10.875
In this paper, sub-harmonic pumped(SHP) mixer using anti-parallel diode pair(APDP) is designed for 5 GHz band wireless communication system. Conventional mixers mix LO with RF, and obtain IF signal from the difference between LO and RF. As the frequency increase, LO signal requires higher LO power, better phase noise characteristics, more stable La. However, using APDP, the SHP mixer mixes the 2nd harmonics of LO signal. Therefore, the SHP mixer has an advantage that the LO signal frequency required for IF signal is reduced at half value of LO fundamental frequency. When LO power is 3 dBm, the conversion loss of manufactured SHP mixer is 12.83 dB. The isolation of LO/IF, 2LO/IF, RF/1F and LO/RF is 39.17 dB, 58 dB, 34 dB, and 67.9 dB. respectively. For this case, IP3 at input is 8 dBm.
Design and Implementation of an Interface Module for the ETC System using Mobile Phone
Shin Song-Ah ; Yim Joe-Hong ;
Journal of Navigation and Port Research, volume 28, issue 10, 2004, Pages 881~889
DOI : 10.5394/KINPR.2004.28.10.881
Using the ETC Service, it is now possible to charge a vehicle for driving pass a specific toll booth electronically, without the vehicle even having to slow down. The smart card and card reader used to collect tolls electronically have a serious problem which it dose not have a standard for the ETC system. In this paper, we suggest the ETC system using mobile phone to collect tolls efficiently instead of existing system which is consist of a Interface Module to connect between a mobile phone and OEE, a mobile phone to send the information of tollgate fees and OEE to communication with RSE of roadway in the vehicle. This primary focus of this system is the IM functions and protocol to assist of the existing mobile phone and OBE.
Simulation-based Evaluation of AGV Operation at Automated Container Terminal
Ha Tae-Young ; Choi Yong-Seok ; Kim Woo-Sun ;
Journal of Navigation and Port Research, volume 28, issue 10, 2004, Pages 891~897
DOI : 10.5394/KINPR.2004.28.10.891
This paper provided a simulation model for transport vehicles that carry container from the ship to yard block and vice versa at automated container terminal with a perpendicular yard layout. Usually, the efficiency of container terminal is evaluated by the productivity of container cranes at apron, and the stevedoring system for transport vehicles and yard cranes should be supported enough to improve productivity of container cranes. Especially, transport vehicle is very important factor in the productivity of container cranes and the performance of transport vehicles are changed according to the number and traveling type of vehicles. For these reason, a method that can estimate productivity of transport vehicle is required Finally, we developed the simulation model to analyze the productivity of transport vehicle and presented the productivity of container cranes for a varying operation of transport vehicles.
The research for the yachting development of Korean Marina operation plans
Jeong Jong-Seok ; Hugh Ihl ;
Journal of Navigation and Port Research, volume 28, issue 10, 2004, Pages 899~908
DOI : 10.5394/KINPR.2004.28.10.899
The rise of income and introduction of 5 day a week working system give korean people opportunities to enjoy their leisure time. And many korean people have much interest in oceanic sports such as yachting and also oceanic leisure equipments. With the popularization and development of the equipments, the scope of oceanic activities has been expanding in Korea just as in the advanced oceanic countries. However, The current conditions for the sports in Korea are not advanced and even worse than underdeveloped countries. In order to develop the underdeveloped resources of Korean marina, we need to customize the marina models of advanced nations to serve the specific needs and circumstances of Korea As such we have carried out a comparative analysis of how Austrailia, Newzealand, Singapore, japan and Malaysia operate their marina, reaching the following conclusions. Firstly, in marina operations, in order to protect personal property rights and to preserve the environment, we must operate membership and non-membership, profit and non-profit schemes separately, yet without regulating the dress code entering or leaving the club house. Secondly, in order to accumulate greater value added, new sporting events should be hosted each year. There is also the need for an active use of volunteers, the generation of greater interest in yacht tourism, and the simplification of CIQ procedures for foreign yachts as well as the provision of language services. Thirdly, a permanent yacht school should be established, and classes should be taught by qualified instructors. Beginners, intermediary, and advanced learner classes should be managed separately with special emphasis on the dinghy yacht program for children. Fourthly, arrival and departure at the moorings must be regulated autonomically, and there must be systematic measures for the marina to be able, in part, to compensate for loss and damages to equipment, security and surveillance after usage fees have been paid for. Fifthly, marine safety personnel must be formed in accordance with Korea`s current circumstances from civilian organizations in order to be used actively in benchmarking, rescue operations, and oceanic searches at times of disaster at sea.
Evaluation of Risk Level for Damage of Marine Accidents in SRRs using Fuzzy Theory
Jang Woon-Jae ; Keum Jong-Soo ;
Journal of Navigation and Port Research, volume 28, issue 10, 2004, Pages 909~915
DOI : 10.5394/KINPR.2004.28.10.909
This paper suggests an evaluation of risk level for damage of marine accidents in SRRs. Qualitative analyses in words is sometimes priorior to quantative analyses in numeric symbols. This paper introduces a concept of fuzzy theory with the plenty of related literature riview and AHP in the Korean SRRs of RCC and RSC. The methodology of this paper is
composition of fuzzy extensive principle, defuzzifiation is centroid of gravity methods. At the result, the evaluation of risk level is especially over Serious for marine accident of Busan SRRs. This paper recommends that many Rescue Vessels and Equipments need to the reduction of risk level about those.
A Study on Spatial Modeling Framework for Marine GIS
Park Jongmin ;
Journal of Navigation and Port Research, volume 28, issue 10, 2004, Pages 917~923
DOI : 10.5394/KINPR.2004.28.10.917
With a rapid growing of information networks and development achievements in mobile technology the spatial information is one of the most important resources for modern daily life. But the speed of spatial information technology trends are far from the real service demands as compared to the other relevant fields, and it would be natural that this unbalanced gap between the supply and demand of spatial information technology is being resulted from the absence of appropriate modeling concepts at some extents. In this paper there would be shown a new approaching model for the spatial information system based on agent concepts, which is able to perform some spatial tasks if properly implemented afterward. And to give resonable background of the new modeling framework here also some known critics for the commonly used modeling approaches when they applied to spatial information modeling followed by several alternative requirements for a good spatial modeling framework. And also there would be some considerations for applying this approach to the marine geographic information communities.
Hydraulic characteristics of a Sea Area due to the Discharge through Yongam-Kumho Sea Dike
Kim Kang-Min ; Kim Sang-Hoon ; Ryu Ha-Sang ; Jeong Dae-Deuk ;
Journal of Navigation and Port Research, volume 28, issue 10, 2004, Pages 925~931
DOI : 10.5394/KINPR.2004.28.10.925
Due to the development of Yongsan river estuary weir and Yongam-Kumho sea dike, Mokop coastal area is changed. Especially, Discharged water through Yongsan river estuary weir and Yongam-Kumho sea dike, may muse the environmental influences such as the changes of currents pattern and sedimentation in the vicinity of semi-closed Mokpo harbor. This study deals with the collection and analysis of discharge through estuary weir and sea dike, based on that, we analyzed a characteristics of a sea area from simulation. As the results of this study, it was known that discharge mused the changes of a tidal currents pattern and calculated depth variations showed close relation with tidal circulation.
A Study on the Optimal Width of the Main Span in the 2nd Bridge of Incheon(1) Evaluation on the Optimal Width of the Main Span according to Traffic Volume and Ship Maneuverability
Koo Ja-Yun ; Kim Seok-Jae ; Jang Eun-Kyu ; Kim Se-Won ;
Journal of Navigation and Port Research, volume 28, issue 10, 2004, Pages 933~940
DOI : 10.5394/KINPR.2004.28.10.933
A construction project of Incheon 2nd bridge, which is connected between the Incheon Song-Do New Town and the Incheon International Airport in Young-Jong-Do, has been proposed by the private capital in 1999. But the optimal width of the main span has not been decided in spite of the three investigations into the feasibility of ship`s safe transit in this planned bridge. In this paper, we study the optimal width of the main span according to the traffic volume in the future traffic and the ship maneuverability of maximum size aspect. The result of this study, the channel in the main span of Incheon 2nd bridge is required to design two-way traffic scheme and the width of 1,000m, which will satisfy the safe transit from the viewpoint of the traffic volume in the future traffic and the ship maneuverability of maximum size.
A Study on Structural Design of Conveyor Frame for High Efficiency Gantry Crane
Lee S.W ; Shim J.J ; Han D.S ; Park J.S ; Han G.J ; Lee K.S ; Kim T.H ;
Journal of Navigation and Port Research, volume 28, issue 10, 2004, Pages 941~946
DOI : 10.5394/KINPR.2004.28.10.941
In this study the structural design of conveyor frame was carried out for the high efficiency gantry crane which can improve the productivity of the container transportation work by reducing cycle time. When the gantry crane was operated, the conveyor frame was deflected largely by its deadload and the total weight of containers placed on it. Therefore thicknesses of conveyor frame to minimize its deadload were designed by the size optimization using ANSYS program as the bending stress and the deflection cf frame due to this simulation satisfied their required values.
Mixing Zone Analysis on Outfall Plume considering Influence of Temperature Variation
Kim Ji-Yeon ; Lee Joong-Woo ;
Journal of Navigation and Port Research, volume 28, issue 10, 2004, Pages 947~953
DOI : 10.5394/KINPR.2004.28.10.947
As a large scale port development in coastal waters proceeds step by step and populations in the vicinity of port are getting increased, the issue on `how to dispose the treated municipal water and wastewater in harbor` brings peoples` concern. The submarine outfall system discharges the primary or secondary treated effluent at the coastline or in deep water, or between these two. The effluent, which has a density similar to that of fresh water, rises to the sea surface forming plume or jet, together with entraining the surrounding sea water and becomes very dilute. We intended in this paper to investigate the impact on dilution of effluent and the behavior of flume under the conditions of the seasonal and spatial temperature variations, which have not been noticeable in designing effective marine outfall system. To predict and analyze the behaviour and dilution characteristics of plume not just with the effluent temperature, but also with the seasonal variation of temperature of surround water, CORMIX( Cornell Mixing Zone Expert System)-GI have been applied. The results should be used with caution in evaluation the mixing zone characteristics of discharged water. We hope to help for the effective operation of outfall system, probable outfall design, protection of water quality, and warm water discharges from a power plant, etc.
Disinfection of harmful organisms for sea water using electrolytic treatment system
Park Sang-Ho ; Kim In-Soo ;
Journal of Navigation and Port Research, volume 28, issue 10, 2004, Pages 955~960
DOI : 10.5394/KINPR.2004.28.10.955
The treated ballast water from previous treatment contains microorganisms and pathogenic organisms in an electrolytic treatment system. The experimental methods included using a peristaltic flow pump placed upward on an electrode pole. Due to the reaction time, the hydraulic retention time indicated unlike microorganisms on the flow rate. In electrolysis, dioxide iridium-coated titanium (Ti/Ir02) and stainless steel plates were used for the anode and cathode, respectively. Current density controls make use of a DC power supply on 250V, 100Amper. Experimental use of a current density between 0.1 and 1.0A/dm2 was able to disinfect the microorganism (E. coli, Bacteria, Bacillus sp.) in seawater for 5 seconds of reaction time. The removal rate was approximately
while the current density was 2.0A/dm2 and the electrode distance was 75mm. This study shows that the electrolytic treatment system has a potential for the sterilization of ballast water.