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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 34, Issue 9 - Dec 2010
Volume 34, Issue 10 - Dec 2010
Volume 34, Issue 8 - Oct 2010
Volume 34, Issue 7 - Sep 2010
Volume 34, Issue 6 - Aug 2010
Volume 34, Issue 5 - Jun 2010
Volume 34, Issue 4 - Jun 2010
Volume 34, Issue 3 - Apr 2010
Volume 34, Issue 2 - Mar 2010
Volume 34, Issue 1 - Feb 2010
Selecting the target year
A Study on Improving Graphic Rendering Engine for Visualization of Ship Handling Simulation
Hwang, Ho-Jin ; Mun, Du-Hwan ;
Journal of Navigation and Port Research, volume 34, issue 3, 2010, Pages 153~160
DOI : 10.5394/KINPR.2010.34.3.153
Simulation visualization technology is an important constituent through which users directly interact with simulators. Simulator users have a needs for more fast, realistic and intuitive visualization. Though hardware-related performances such as computing power and visual equipment have been grown, the limits have existed in graphics rendering engines generally used in marine simulator up to now. This paper has focused on the review of graphic rendering engines available for simulation visualization. We had deduced system requirements for visualization of ship handling simulation, had surveyed graphic rendering engines as commercial and open source, and analyzed strengths and weakness of them. The feasibility study for simulation visualization of tug-barge transportation with an open source graphics rendering engine(OGRE3D) has been demonstrated.
A Study on Design and Fabrication of mm-Wave EM Absorber
Kim, Dae-Hun ; Choi, Chang-Mook ; Choi, Dong-Su ; Kim, Dong-Il ;
Journal of Navigation and Port Research, volume 34, issue 3, 2010, Pages 161~166
DOI : 10.5394/KINPR.2010.34.3.161
The bandwidth of detecting radars used for military purpose is increasingly broadened, and recently, the frequency band of the detecting radars is expanding to millimeterwave bands of the millimeterwave bands of 35 GHz and 94 GHz. Since, especially, it is essential and important to fabricate and develop EM wave absorber with the absorption ability more than 10 dB in 94 GHz band, the EM wave absorber was manufactured based on the design method by FDTD simulation. As a result, the developed EM wave absorber with the composition ratio of Binder(CPE with additional materials) : Carbon = 70 : 30 wt.% has the thickness of 0.7 mm and the absorption ability more than 14 dB in the frequency range of 94 GHz.
A Study on the Design of Meander Slot Antenna for the Zigbee Module and Improvement of Its Return Loss
Lee, Young-Soon ; Kim, Ui-Jung ; Kim, Byoung-Sam ; Jang, Bong-Ki ;
Journal of Navigation and Port Research, volume 34, issue 3, 2010, Pages 167~173
DOI : 10.5394/KINPR.2010.34.3.167
In order to design small printed antenna restricted within narrow area of
for the Zigbee module and improve its return loss, meander slot antenna with a floating conductor as the parastic element has been proposed. The resonant frequency and bandwidth(VSWR
2) of the antenna designed and fabricated in the present study is about 2.44GHz and 113MHz respectively. The radiation pattern is almost similar to that of dipole antenna within the operation frequency range. Also the radiation efficiency and gain of the proposed antenna is more than 60% and 2.7dBi respectively. It has been observed that the characteristics the proposed antenna mentioned above satisfy the specification required of the Zigbee application. In order to validate the proposed antenna, some simulated and measured results are presented and compared.
Comparison of Predicted and Measured ASF
Shin, Mi-Young ; Hwang, Sang-Wook ; Yu, Dong-Hui ; Park, Chan-Sik ; Lee, Chang-Bok ; Lee, Sang-Jeong ;
Journal of Navigation and Port Research, volume 34, issue 3, 2010, Pages 175~180
DOI : 10.5394/KINPR.2010.34.3.175
In the almost application parts, GNSS being used the primary navigation system on world-widely. However, some of nations attempt or deliberate to enhance current Loran system, as a backup to satellite navigation system because of the vulnerability to the disturbance signal. Loran interests in supplemental navigation system by the development and enhancement, which is called eLoran, and that consists of advancement of receiver and transmitter and of differential Loran in order to increase the accuracy of current Loran-C. A significant factor limiting the ranging accuracy of the eLoran signal is the ASF in the TOAs observed by the receiver. The ASF is mostly due to the fact that the ground-wave signal is likely to propagate over paths of varying conductivity and topography. This paper presents comparison results between the predicted ASF and the measured ASF in a southern east region of Korea. For predicting ASF, the Monteath model is used. Actual ASF is measured from the legacy Loran signal transmitted Pohang station in the GRI 9930 chain. The test results showed the repeatability of the measured ASF and the consistent characteristics between the predicted and the measured ASF values.
A Study on Multi-carrier Technique for High-speed Data Transmission in Underwater Communication
Han, Jeong-Woo ; Kim, Ki-Man ; Son, Yoon-Jun ;
Journal of Navigation and Port Research, volume 34, issue 3, 2010, Pages 181~187
DOI : 10.5394/KINPR.2010.34.3.181
The performance of underwater wireless communication system is influenced on channel characteristic. Especially, a delay spread cause by reverberation and multi-path happen the ISI (Inter Symbol Interference) and reduces the communication performance. In this paper, we study the application of high speed data transmission in underwater to use the OFDM (Orthogonal Frequency Division Multiplexing) technique for robust the reverberation and multi-path. we confirm the performance of communication in underwater to use the model for actually underwater channel simulation model. As a result, we acquired the BER of modulation techniques. The BER of single carrier is
and BER of multi carrier is
An inventory analysis on greenhouse gas emissions from bulk carrier and oil tanker
Im, Nam-Kyun ; Yi, Sung-Ryong ;
Journal of Navigation and Port Research, volume 34, issue 3, 2010, Pages 189~194
DOI : 10.5394/KINPR.2010.34.3.189
As the seriousness of the global environment is gaining our attention recently, studies on application of LCA(Life Cycle Assessment) to ship are being carried out dynamically in various industrial fields. This study was carried out to examine the application of LCA to ships and was focused on the inventory analysis on global warming gas from merchant cargo ships. Two merchant cargo ships were adopted as ship models. Actual voyage data of at last several years was used to analysis the ship's exhaust gas inventory. The analysis shows how many weight of global warming gas being exhausted to transport 1 ton of each cargo per 1 nautical mile.
Total Dynamic Analysis of Deep-Seabed Integrated Mining System
Kim, Hyung-Woo ; Hong, Sup ; Lee, Chang-Ho ; Choi, Jong-Su ; Yeu, Tae-Kyeong ;
Journal of Navigation and Port Research, volume 34, issue 3, 2010, Pages 195~203
DOI : 10.5394/KINPR.2010.34.3.195
This paper concerns about total dynamic analysis of integrated mining system. This system consists of vertical steel pipe, intermediate buffer station, flexible pipe and self-propelled miner. The self-propelled miner and buffer are assumed as rigid-body of 6-dof. Discrete models of vertical steel pipe and flexible pipe are adopted, which are obtained by means of lumped-parameter method. The motion of mining vessel is not considered. Instead, the motion of mining vessel is taken into account in form of various boundary conditions (e.g. forced excitation in slow motion and/or fast oscillation and so on). A terramechanics model of extremely cohesive soft soil is applied to the self-propelled miner. Hinged and ball constraints are used to define the connections between sub-systems (vertical steel pipe, buffer, flexible pipe, self-propelled miner). Equations of motion of the coupled model are derived with respect to the each local coordinates system. Four Euler parameters are used to express the orientations of the sub-systems. To solve the equations of motion of the total dynamic model, an incremental-iterative formulation is employed. Newmark-
method is used for time-domain integration. The total dynamic responses of integrated mining system are investigated.
Effects of Operating Parameters on Ozone Production by Plasma Gun for Ballast Water Treatment
Lee, Hyeon-Don ; Kim, Jong-Oh ; Chung, Jae-Woo ;
Journal of Navigation and Port Research, volume 34, issue 3, 2010, Pages 205~211
DOI : 10.5394/KINPR.2010.34.3.205
Effects of operating parameters on electrical properties and ozone generation of Plasma Gun for ballast water treatment were investigated in a laboratory scale experiment. Electrical discharges and ozone generation initiated with applying voltages higher than discharge onset value. Ozone concentration was almost linearly increased with the increase of applied voltage. The optimum electrode gap distance which gave the optimum energy efficiency of ozone generation was 1.95 mm in the experimented apparatus. The effect of inner electrode material on the electrical energy transfer was negligible, however, the difference of electrical and thermal conductivities between electrode materials significantly influenced the ozone generation. In a constant geometrical structure, the electrical energy density played an important role in the ozone generation. The increase of oxygen content in the feeding gas enhanced the ozone generation by lowering ionization potential and promoting ozone source.
A Study on High-level FSA for Korean-flagged General Cargo Ships
Lee, Jong-Kap ; Na, Seong ; Kim, Hong-Tae ; Kim, Kyoung-Mi ;
Journal of Navigation and Port Research, volume 34, issue 3, 2010, Pages 213~220
DOI : 10.5394/KINPR.2010.34.3.213
Following the application of Formal Safety Assessment(FSA) to bulk carriers, crude oil tankers and large passenger ships, an urgent need to consider the safety of general cargo ships has recently been raised through the International Maritime Organization(IMO)(IMO, 2006a), and related FSA studies are being carried out by International Association of Classification Societies(IACS) as a preparatory work for the discussion on the issue of general cargo ship safety in the IMO committee. FSA is a structured and systematic methodology which is based on the techniques of risk analysis and cost benefit assessment to assist in the decision-making process, and aims at enhancing maritime safety, including protection of life, health, the marine environment and property. FSA can be used as a tool to facilitate the development of regulatory changes equitable to the various parties, with a view to aiding the achievement of consensus, and to help in the evaluation of new regulations and in making a comparison between existing and possibly improved regulations(IMO, 2007). This study aims at verifying the usefulness of FSA methods as a tool to conduct a safety assessment of general cargo ships flying the Korean flag, and providing useful information on 'the safety of general cargo ships' for IMO committee's discussion on the matter at a future session. FSA comprises five steps, however, steps 1(Hazard identification) and 2 (Risk analysis) from the FSA study for the Korean-flagged general cargo ships are discussed in this paper.
A study on Value and Application of Mobile Harbor in Terms of Coastal Transportation
Shin, Chang-Hoon ; Jeong, Su-Hyun ; Park, Soo-Nam ;
Journal of Navigation and Port Research, volume 34, issue 3, 2010, Pages 221~228
DOI : 10.5394/KINPR.2010.34.3.221
As container traffic is increasing, the introduction of mega-vessel has had a significant impact on the ports and terminals business. This movement of container shipping has led to intensely competitive environment among ports, so substantial pressures to develop new container ports or to expand existing ones, have been grown. However, it requires a huge investment, especially cost and time, to overcome environmental, geographical and financial restrictions generated from developing a port. This study addressed the Mobile Harbor, the new concept of marine logistics system as an alternative strategy. We performed an economic analysis on the introduction of the Mobile Harbor in coastal transport sector and also a sensitivity analysis to examine the effects of changing factors related on the economic evaluation. We have examined the value and application of Mobile Harbor as a preliminary study, which may contribute to further studies on the Mobile Harbor.
The selection of import-export goods contributing to activate port hinterland operation - focusing on Port of Incheon
Jung, Hyun-Jae ; Yeo, Gi-Tae ; Kim, Jong-Kil ;
Journal of Navigation and Port Research, volume 34, issue 3, 2010, Pages 229~234
DOI : 10.5394/KINPR.2010.34.3.229
The aim of this study is to select the import and export goods which contribute to activate the operation of port hinterland. The spatial ranges of this study are A-am 1 logistics complex and 4dock hinterland. The Factor Analysis(FA) and Analytic Hierarchy Process(AHP) are used as the methodologies. Eleven low evaluation factors including 'creation of traffic cargo volume' are selected by precedent studies and four high evaluation factors including 'effective management' are grouped through factor analysis. As the result of priority among low evaluation factors through AHP, 'creation of traffic cargo volume' is the most important factor. Moreover using the AHP, 'electronic component' is the most important item which activate the Port of Incheon and its hinterland. So cargos which have the potential to create traffic cargo volume such as 'electronic component' must be managed strategically and this study can be used as important index when people concerned attract items.
Relationship Analysis between Integration Incentive Factor and Integration Effect of Container Terminal by SEM - Primarily on the Busan North Port -
Ahn, Ki-Myung ; Choo, Yeon-Gil ; Lee, Kwang-Soo ;
Journal of Navigation and Port Research, volume 34, issue 3, 2010, Pages 235~242
DOI : 10.5394/KINPR.2010.34.3.235
In recent years, the busan port is now facing a serious crisis. Exterally, though worldwide economics depression is a serious factor, cuttthroat competition between north port and new port since new port open lead to decrease terminal profitability and busan port image. The essential cause is crowed with terminal operators. therefore, This paper empirically analyze the container terminal integration factor solving busan port problem affecting the competitiveness performance. According to research results, integration between operators will be to acomplish global terminal, and so, contribute to increase service power, port productivity, cargoes and to be hub-port at the north-east asia. These results show political suggestions for importance of repid integration to improve busan port's competitiveness.
A Study on Drawing Priority of Competitiveness Factors of Ship Management Company in Korea Using AHP
Lee, Chang-Ho ; Ryoo, Dong-Keun ; Sohn, Bo-Ra ; Seo, Young-Joon ;
Journal of Navigation and Port Research, volume 34, issue 3, 2010, Pages 243~249
DOI : 10.5394/KINPR.2010.34.3.243
The competition between ship management companies is fierce as a result of global trend towards increased specialization. In order for ship management companies to remain competitive, it is necessary to understand the local and global factors and the changing circumstances that impact shipping markets and trade patterns. To better understand these factors, a study and analysis of drawing priority of the competitiveness-evaluation factors of ship management companies was conducted using Analytical Hierarchy Process(AHP) as a method dealing with dicision-making problem. As a consequence of this analysis, it was determined that human resources, both shipboard and land management, were a primary factor in ship management company's competitiveness. Thus, the acquisition and retention of capable staff was a key aspect of assuring a ship management company's competitiveness.
A Study on the Necessity of Limitation for Legal Liability in Marine Accidents
Ji, Sang-Won ;
Journal of Navigation and Port Research, volume 34, issue 3, 2010, Pages 251~255
DOI : 10.5394/KINPR.2010.34.3.251
A marine accident is caused various legal liability such as compensation for damages on civil law, responsibility on the Criminal Code and administrative sanctions. The results occurred by any acts is not connected directly to the legal responsibility. As a prior condition for these legal liabilities, it is required the causation between the act caused and the occurrence of the effect. It is very difficult to find out the cause in marine accidents, because of trouble of a proof security, the place occurred, time difference between accident and investigation point of time etc.. However, finding out the correct cause is an element important to prevent similar accident and to determine the liability reverted. The logical concept of the causation is not limited, but there is early necessity to limit it in the liability reverted. Therefore, this study aims to suggest reasonable standard to determine liability reverted in marine accidents.
The Change Analysis of Land Space Structure by assuming the Linkage of Transcontinental Railway-Rail Ferry- Undersea Tunnel
Park, Jin-Hee ;
Journal of Navigation and Port Research, volume 34, issue 3, 2010, Pages 257~265
DOI : 10.5394/KINPR.2010.34.3.257
This research aims to grasp ripple effect of land space by assuming the linkage of transcontinental railway, asian highway, rail ferry and undersea tunnel. The result of research was drawn positively. But all region don't have same result. Pacific Yellow Sea of Chnia has better route on the present sea transport. The other region has better route on changing network. This research has some academic significants as a research start in an unexplored field and basic research for following research. Also, Academic contribution is in attempt to analyze effect size, change of effect and contribution of balance development by linkage of ultra infra structure and gives political proposals for related research development.