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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 36, Issue 9 - Dec 2012
Volume 36, Issue 10 - Dec 2012
Volume 36, Issue 8 - Oct 2012
Volume 36, Issue 7 - Sep 2012
Volume 36, Issue 6 - Aug 2012
Volume 36, Issue 5 - Jun 2012
Volume 36, Issue 4 - Jun 2012
Volume 36, Issue 3 - Apr 2012
Volume 36, Issue 2 - Mar 2012
Volume 36, Issue 1 - Feb 2012
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Finding Declinations Using Lookup Tables and Bilinear Interpolation in the Application of Digital Magnetic Compass
Yim, Jeong-Bin ; Kim, Dae-Hee ;
Journal of Navigation and Port Research, volume 36, issue 9, 2012, Pages 699~706
DOI : 10.5394/KINPR.2012.36.9.699
This paper describes Declination interpolation method in the application of Digital Magnetic Compass(DMC) with small capacity memory for relatively low-priced system. The purpose of this study is to find accurate declination values using Declination Lookup Table(DLT) and Secular Variation Table(SVT) with the Bilinear interpolation method having four points data only. World Magnetic Model with Gauss coefficients produced by NOAA is used in the calculation of DLT and SVT at desired years. To verify the applicability of the proposed method, the simulation tests and the error analysis are carried out in this work. As results from tests, the interpolation error is within 0.01 degree that is much enough to implement high accurate DMC comparing with commercial DMCs on the market. In summary, the declination interpolation method, proposed in this study, can be useful in the application of DMC.
Coupled Dynamic Simulation of a Tug-Towline-Towed Barge based on the Multiple Element Model of Towline
Yoon, Hyeon Kyu ; Kim, Yeon Gyu ;
Journal of Navigation and Port Research, volume 36, issue 9, 2012, Pages 707~714
DOI : 10.5394/KINPR.2012.36.9.707
Recently, tug boats are widely used for towing a barge which transports building materials, a large block of a ship, offshore crane, and so on. In order to simulate the dynamics of the coupled towing system correctly, the dynamics of the towline should be well modeled. In this paper, the towline was modeled as the multiple finite elements, and each element was assumed as a rigid cylinder which moves in five degrees of freedom except roll. The external tension and its moment acting on each element of the towline were modeled depending on the position vector's direction. Tugboat's motion was simulated in six degrees of freedom where wave and current effects were included, and towed barge was assumed to move in the horizontal plane only. In order to confirm the mathematical models of the coupled towing systems, standard maneuvering trials such as course changing maneuver, turning circle test and zig-zag test were simulated. In addition, the same trials were simulated when the external disturbances like wave and current exist. As the result, it is supposed that the results might be qualitatively reasonable.
A Study on Development of LCD monitor-Based Pilots' Ship-Handling Simulator
Jeong, Tae-Gweon ; Chen, Chao ; Lee, Shin-Geol ; Lee, Jeong-Jin ; Huh, Yong-Bum ;
Journal of Navigation and Port Research, volume 36, issue 9, 2012, Pages 715~720
DOI : 10.5394/KINPR.2012.36.9.715
This paper is to introduce the development of a LCD monitor-based pilots' ship handling simulator installed in the office of Korea Maritime Pilots Association. This simulator is composed of hardware which includes working server array, operation PC, monitor array, rudder, thruster and telegraph peripheral devices, and software which includes ship mathematical model software, ship conning software, image supporting software and so on. In this simulator, MMG mathematical model is used to create thirteen(13) ship models, which are based on sea trial data & pilots' opinion. According to requirements of pilots, virtual scenes of different port areas are built, and some required additional functions are also developed. By using this simulator, pilots can fulfill all kinds of training exercises, design of channel approaching ports, traffic safety analysis, prevention of accident research and other tasks, so as to grasp the characteristics of different ships, and accumulate experience for piloting.
A Quantitative Marine Traffic Safety Assessment of the Vung Tau Waterway
Nguyen, Xuan Thanh ; Park, Youngsoo ; Park, Jinsoo ;
Journal of Navigation and Port Research, volume 36, issue 9, 2012, Pages 721~728
DOI : 10.5394/KINPR.2012.36.9.721
Marine traffic safety of the Vung Tau Waterway, from port limit to Ganh Rai Gulf, plays a crucial role in the economic development of the important triangular economic zone in the south of Vietnam: Ho Chi Minh City, Dong Nai Province, Ba Ria-Vung Tau Province. This paper uses the IWRAP Mk2 program to assess marine traffic safety and shows that in the area there are three parts of fairway have highest risk of collision (from buoys No. 8-9 to buoys No. 1-2 of the Song Dinh fairway; from buoy No. 0 to buoys No. 8-9 and from buoys No. 6-9 to buoys No. 8-9A of the Sai Gon-Vung Tau fairway) and the two areas have highest risk of grounding (the Vung Tau coastline from Ganh Hao to Sao Mai and an area in the Ganh Rai Gulf). In addition, the result of a questionnaire survey on a group of Pilots shows that wind, current and rain/fog have considerable negative effect to ship handling of large vessels in this area. This paper's results will be used in the further research to discover solutions for improving marine traffic safety in the Vung Tau Waterway.
Performance Prediction of an OWC Wave Power Plant with 3-D Characteristics in Regular Waves
Hong, Do-Chun ; Hong, Keyyong ;
Journal of Navigation and Port Research, volume 36, issue 9, 2012, Pages 729~735
DOI : 10.5394/KINPR.2012.36.9.729
The primary wave energy conversion by a three-dimensional bottom-mounted oscillating water column (OWC) wave power device in regular waves has been studied. The linear potential boundary value problem has been solved following the boundary matching method. The optimum shape parameters such as the chamber length and the depth of the front skirt of the OWC chamber obtained through two-dimensional numerical tests in the frequency domain have been applied in the design of the present OWC chamber. Time-mean wave power converted by the OWC device and the time-mean second-order wave forces on the OWC chamber structure have been presented for different wave incidence angles in the frequency-domain. It has been shown that the peak period of
for the optimum damping parameter coincides with the peak period of the time.mean wave drift force when
A Miniaturized CMOS MMIC Bandpass Filter with Stable Center Frequency for 2GHz Application
Kang, In Ho ; Guan, Xin ;
Journal of Navigation and Port Research, volume 36, issue 9, 2012, Pages 737~740
DOI : 10.5394/KINPR.2012.36.9.737
A miniaturized CMOS bandpass filter for a single RF transceiver system is presented, using diagonally end-shorted coupled lines and lumped capacitors. In contrast to conventional miniaturized coupled line filters, it is proven that the effective permittivity variation of the coupled transmission line has no effect on shifting the center frequency when the bandpass filter is highly miniaturized. A bandpass filter at a center frequency of 2 GHz was fabricated by
CMOS technology. The insertion loss with the die area of
is -5.14 dB. Simulated results are well agreed with the easurements. It also verify the center frequency stability in the compact size bandpass filter.
Economic Damage Assessment of Coastal Development using Dynamic Bioeconomic Model
Kim, Tae-Goun ;
Journal of Navigation and Port Research, volume 36, issue 9, 2012, Pages 741~751
DOI : 10.5394/KINPR.2012.36.9.741
This article analyzes the interdependency between nonrenewable marine sand resources and renewable fishery resources by the developed dynamic bioeconomic model. The developed bioeconomic model is applied to a case study of efficient sustainable management for marine sand mining, which adversely affects a valuable blue crab fishery and its habitat in Korea. The socially-efficient extraction plan for marine sand and the time-variant environmental external costs to society in terms of diminished harvest rate of blue crab are determined. To take into account long-term effects from destroyed fishery habitat, a Beverton-Holt age structure model is integrated into the bioeconomic model. The illustrative results reveal that the efficient sand extraction plan is dynamically constrained by the stock size of the blue crab fishery over time. Thus, the dynamic environmental external cost is more realistic resource policy option than the classical fixed external cost for determining socially optimal extraction plans. Additionally, the economic value of bottom habitat, which supports the on- and off-site commercial blue crab fishery is estimated. The empirical results are interpreted with emphasis on guidelines for management policy for marine sand mining.
Customer Loyalty and Logistics Service Performance in Maritime Transport : A Literature Review and Conceptual Model
Jang, Hyun Mi ; Kim, Sang Youl ;
Journal of Navigation and Port Research, volume 36, issue 9, 2012, Pages 753~761
DOI : 10.5394/KINPR.2012.36.9.753
To achieve a differential advantage over competitors and protect their long-term interest, shipping lines have striven to find ways to maintain an ongoing relationship with shippers which can be achieved by attaining their loyalty. The benefits of loyal shippers are potentially huge in that they generate long-term revenue streams as well as provide cost savings as compared with attracting new shippers. Logistics service provided by shipping lines is identified as one of the effective tools for building customer loyalty. However, in a review of the literature none of the studies examine how logistics service creates customer loyalty, particularly between shipping lines and shippers. Consequently, the overarching purpose of this paper is to extend knowledge on logistics service performance and its relationship with customer loyalty in the unique context of maritime transport by proposing a new conceptual model based on an extensive literature review. The major contribution is to offer a new insight into the complex relationships between those 'soft' concepts in the context of maritime transport.
Development of the Accessibility Guidelines for Mobility Handicapped Persons in Passenger Ship
Kim, Hongtae ; Lee, Jong-Gap ;
Journal of Navigation and Port Research, volume 36, issue 9, 2012, Pages 763~767
DOI : 10.5394/KINPR.2012.36.9.763
The ratio of the mobility handicapped person is about 25.8% of the total population in Korea(MCT, 2006). In order to prepare for the enforcement of the "Transportation Services Improvement Act for the Mobility Handicapped People"(MCT, 2006), various equipments and installations should be developed to ensure appropriate safety level for the mobility handicapped persons in maritime transportation. While approximately 10 million people are using domestic passenger vessels annually, preferences for maritime transport is very low, especially for the mobility handicapped. This study reviewed a current status of the mobility handicapped person in domestic passenger ship and analysed the improvement plan for them. To investigate the current status of domestic passenger vessel usage by the mobility handicapped, to analysis the requirements for amenities necessary for the mobility handicapped and select the ones to be developed based on the investigated results and to do feasibility study of barrier-free ship.
Different Concepts of Customer-Supplier Relationship - An Exploratory Case Study of Korean-German Business Activities in the Shipbuilding Industry
Choi, Jinchul ;
Journal of Navigation and Port Research, volume 36, issue 9, 2012, Pages 769~780
DOI : 10.5394/KINPR.2012.36.9.769
In the last several years, South Korea's shipbuilders have been dominating global shipbuilding. Thus, many global suppliers in the shipbuilding industry, especially German supply companies, are eager to get the Korean major shipbuilders as their customer. This study analyzed the different ways of business behaviours of German and Korean businessmen regarding customer-supplier relations. Furthermore, this paper aims to examine the kinds of challenges the international businessmen are confronted with and how this affects everyday business between German suppliers and Korean customers, using several case examples. Finally, backgrounds of cross-cultural problems and conflicts of German-Korean business relations are identified and explained.
A Study on the Strategy of Establishing China Maritime Performing Party System
Noh, Chang-Kyun ; Liu, Xiaoxian ;
Journal of Navigation and Port Research, volume 36, issue 9, 2012, Pages 781~786
DOI : 10.5394/KINPR.2012.36.9.781
Based upon the analysis of the former paper, this paper suggest that present problems existing in China's relevant laws and regulations, the difficulties in constructing China's maritime performing party system, the strategy in constructing maritime performing party in China. The writer focused on the strategies of establishing maritime performing party in China, and analyzed the problems which needed to pay attention. Finally, in the writer's view, China does not need to take part in the Convention, and can establish the maritime performing system by amending China Maritime Code.