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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of Navigation and Port Research
Journal Basic Information
Journal DOI :
Korean Institute of Navigation and Port Research
Editor in Chief :
Volume & Issues
Volume 26, Issue 5 - Dec 2002
Volume 26, Issue 4 - Oct 2002
Volume 26, Issue 3 - Aug 2002
Volume 26, Issue 2 - Jun 2002
Volume 26, Issue 1 - Mar 2002
Selecting the target year
An Empirical Study on the Quality Management for Port Services - Primarily on Container Terminals in Busan -
Choi, Young-Ro ; Shin, Han-Won ; Ko, Su-Bok ;
Journal of Navigation and Port Research, volume 26, issue 2, 2002, Pages 153~159
DOI : 10.5394/KINPR.2002.26.2.153
An empirical study was carried out to examine how Container Terminals in Busan view quality management activities by the provision of statistical evidence showing the efforts to enhance the standard of quality management, common factors of quality management activities and causal relationship among these factors. The data investigating the quality management for Busan Container Terminals were collected from 170 persons in charge of quality management for port services in Busan Container terminals by the use of questionnaire method and personal interviews. The Cronbach`s a coefficient and factor analysis were used to analyze the reliability and the validity of measured variables. Furthermore, SEM (Structural Equation Modeling) method using AMOS(Analysis of MOment Structure) 4.0 was usea to analyze the cause-effect relationship among the source, activities and accomplishments of quality management representing the core concept of quality management system.
A Study of Dynamic Forecast on Port Container Handling Capacity
Feng, Zhan-Qing ; Lee, Su-Ho ;
Journal of Navigation and Port Research, volume 26, issue 2, 2002, Pages 161~166
DOI : 10.5394/KINPR.2002.26.2.161
In view of the great disparity between forecasts of Shanghai port container handling capacity and its real results, we choose a dynamic forecast method by the causality model dynamic compensation to predict Shanghai port container handling capacity. And we forecast Shanghai port container handling capacity by using this method. We have made a satisfactory achievement, which provides a more reliable and practical way to forecast container handling capacity.
A Study on the Container Tax Collection of Busan City
Kim, Kong-Won ; Kwak, Kyu-Suk ; Kim, Seun-Sub ;
Journal of Navigation and Port Research, volume 26, issue 2, 2002, Pages 167~175
DOI : 10.5394/KINPR.2002.26.2.167
Busan Port which is the representative social overhead capital facilities for international trade of goods has need the driving force for economic development in Korea. Therefore, the central government should play the major role in building a rear road to Busan Port in order that it may function as a moor port of Northeastern Asia through the systemization of mutual assistance among connected facilities, completely equipped with port-related facilities befitting to the principal port of imports and exports. In this study, the validity of container tax is being examined, analyzing container tax which is considered as an obstacle to the development of Busan Port and its purpose, and grasping the present conditions by the realistic speculation on container tax issues and its abolition. First, the port rear road as a social overhead capital facilities, which connects port and expressway, should be considered as part of port, and port is social overhead capital invested by government. Second, the Busan City imposes taxes on container. As a result, a shipper and a shipping company are paying a double charge by paying container tax with port dues. Third, Empty container and Tranship container are the factor of Busan city traffic jam but their was excluded from container tax. This is deviate from equilibrium of the tax object. Forth, it has bad influence upon the competitiveness of Busan Port as Northeastern logistics base, as other ports who are competing with Busan Port like china, Taiwan, Japan`s port make their competitiveness strong by decreasing the cost of port dues.
A Study on the Operational Utilization Levels of Lock Gates in Incheon Port
Koo, Ja-Yun ;
Journal of Navigation and Port Research, volume 26, issue 2, 2002, Pages 177~182
DOI : 10.5394/KINPR.2002.26.2.177
In inner harbour of Incheon port, there are two lock gates (50KT, 10KT) which have two gates per lock gate in inner/outer sides except a gate in inner harbour side of 10KT. Due to the lack of the fore-mentioned gate, the use of 10KT lock gate is suspended in energy 3 years for regular maintenance. Now an additional gate is under construction in order to improve the efficiency of the 10KT lock gate. This paper will be aimed to evaluate the operational utilization levels of lock gates in present and future. The operational utilization levels of lock gates in 1998 are evaluated 0.2119 in 10KT lock gate, 0.2061 in 50KT lock gate which were considered the 46.5 closed days every 3 years for 10KT regular maintenance. The levels are estimated to 0.2246(10KT), 0.2539(50KT0 in 2006 and 0.2241(10KT), 0.2560(50KT) in 2011. The levels of 50KT lock gate in 2011 are evaluated to be more rapidly increased up to 24.5% from the levels in 1998.
A Study on the Forecasting of Container Volume using Neural Network
Park, Sung-Young ; Lee, Chul-Young ;
Journal of Navigation and Port Research, volume 26, issue 2, 2002, Pages 183~188
DOI : 10.5394/KINPR.2002.26.2.183
The forecast of a container traffic has been very important for port and development. Generally, Statistic methods, such as moving average method, exponential smoothing, and regression analysis have been much used for traffic forecasting. But, considering various factors related to the port affect the forecasting of container volume, neural network of parallel processing system can be effective to forecast container volume based on various factors. This study discusses the forecasting of volume by using the neural, network with back propagation learning algorithm. Affected factors are selected based on impact vector on neural network, and these selected factors are used to forecast container volume. The proposed the forecasting algorithm using neural network was compared to the statistic methods.
The Theoretical Study on the GM Inference of the Small Fishing Vessels
Lee, Seung-Keon ; Lee, Yong-Won ;
Journal of Navigation and Port Research, volume 26, issue 2, 2002, Pages 189~192
DOI : 10.5394/KINPR.2002.26.2.189
In Korea, most of small fishing vessels whose lengths are under 24m frequently cause maritime accidents due to flood and capsize. In this situation, however, there are no stability criteria and data for small fishing vessels. In this paper, the authors investigated data of 10 real ships which were built since 1990, and derived equations for evaluating ship`s stability using Genetic Programming. Also, the validity of GM estimation using Genetic Programming was shown with comparison of GM value by GM value by foreign standards. More data of real ships are needed for the application of these theory to ship design process.
Design of TSK Fuzzy Nonlinear Control System for Ship Steering
Chae, Yang-Bum ; Lee, Won-Chan ; Kang, Geun-Taek ;
Journal of Navigation and Port Research, volume 26, issue 2, 2002, Pages 193~197
DOI : 10.5394/KINPR.2002.26.2.193
This paper suggests a method to design TSK(Takagi-Sugeno-Kang) fuzzy nonlinear control system for automatic steering system which contains the nonlinear component of ship`s maneuvering equation. A TSk fuzzy model can be identified using input-output data and represent a nonlinear system very well. A TSK fuzzy controller can be designed systematically from a TSK fuzzy model because the consequent part of TSK fuzzy rule is a linear input-output equation having a constant term. Therefore, this paper suggests the method identifying the TSK fuzzy model and designing the TSK fuzzy controller based on the TSK fuzzy model for ship steering.
Shaping Analysis to decide the Design Condition of a Passive-type Radar Reflector
Yim, Wung-Bin ; Kim, Woo-Suk ;
Journal of Navigation and Port Research, volume 26, issue 2, 2002, Pages 199~207
DOI : 10.5394/KINPR.2002.26.2.199
Radar Cross Sections(RCS) for the radar targets are measured and their performance characteristics are analyzed through computer simulation. In addition, constructional features for the commercial radar reflectors are investigated. Then, the optimum design condition of a passive-type radar reflector was chosen. The results show that the octahedral-type radar reflector with 10
sized circular plates has best performance in X-band(
A Study on Progressive Removing Radar Clutter by Wavelet and Recursive Mathematical Morphology
Jeong, Gi-Ryong ;
Journal of Navigation and Port Research, volume 26, issue 2, 2002, Pages 209~213
DOI : 10.5394/KINPR.2002.26.2.209
MRA(Multi-resolution analysis) algorithm by Wavelet and morphology with
SQ(square) SE(structure element) is efficient to remove ship`s radar clutter progressively and enhances detecting performance. Smoothing efficiency of RMM (Recursive mathematical Morphology) is better than that of Morphology. So, to get a better result than that of old algorithms, this paper proposes a new MRA algorithm which uses Wavelet and Recursive mathematical Morphology with
RHR(rhombus) SE. Simulation result of the proposed algorithm shows that PSNR is 0.65~1.50db better than that of old method.
The 100Watt Unit Power Amplifier Using Temperature Independent Biasing for DTV Repeater Application
Lee, Young-Sub ; Jeon, Joong-Sung ; Lee, Seok-Jeong ; Ye, Byeong-Duck ; Hong, Tchang-Hee ;
Journal of Navigation and Port Research, volume 26, issue 2, 2002, Pages 215~220
DOI : 10.5394/KINPR.2002.26.2.215
In this paper, the 100 watt unit ower amplifier using temperature independent biasing for DTV (Digital Television) repeater application is designed and fabricated. The DC operation point of this unit power amplifier at temperature variation from
is fixed by active bias circuit. The variation of current consumption in the 100 watt unit power amplifier has an excellent characteristics of less than 0.6A. The implemented unit power amplifier has the gain over 12dB, the gain flatness of less than 0.5dB and input and output return, loss of than 15dB over the DTV repeater frequency range (470~806MHz). This unit power amplifier yields intermodulation distortion(IMD) of more than 32dBc at 2MHz offset, which satisfies the IMD at output power of 100 watt (50dBm).
Field Experiments and Analysis of Drift Characteristics of Small Vessels in the Coastal Region off Busan Port
Kang, Sin-Young ; Lee, Mun-Jin ;
Journal of Navigation and Port Research, volume 26, issue 2, 2002, Pages 221~226
DOI : 10.5394/KINPR.2002.26.2.221
To provide reliable data for drift prediction models, field experiments were carried out in the coastal region off Busan port. Four different size of vessels(10, 30, 50, 90G/T ton) were deployed for the experiment. Among them G/T 50ton class vessel was equipped with instruments measuring the currents, winds, headings and trajectory data. In the rest of vessels only the position data were recorded for the purpose of target divergence study. The trajectories of each vessel were measured by DGPS(Differential Global Positioning System) and collected by APRS(Automatic Position Reporting System). The experiment was done in wind of 2~10m/s and current of 0.5~1.5m/s. The leeway was derived by subtracting surface current velocity from target drifting velocity. The leeway rate of G/T 50ton vessel was found to be about 3.6% and the computed leeway speed equation was
A Study on the Sea Water Flow in Danghang Bay
Kim, Chang-Je ; Kim, Mi-Kum ; Son, Chang-Bae ; Kang, Sung-Jin ;
Journal of Navigation and Port Research, volume 26, issue 2, 2002, Pages 227~233
DOI : 10.5394/KINPR.2002.26.2.227
Recently, the water pollution of coastal sea area including harbor, bay and inland sea has been very serious and it causes u\\various environmental impacts. In this study, water flow system of Danghnag Bay, which has the narrow and long topographical characteristics with the narrow bay mouth and its flow is influenced principally by the tidal current, is investigated experimentally and numerically. In order to understand the tidal system of Danghang Bay, harmonic analysis is performed based on measured tidal range and flow velocity. In addition, numerical model for tidal exchange is developed considering conditions of Danghang Bay. Calculated results show good agreement with measurement. Lastly, based on the proposed numerical model, exchange ratio of seawater volume in Danghang Bay is predicted.
A study on the fabrication of semiconductor laser for optical sensor
Kim, Jeong-Ho ; An, Se-Kyung ; Hwang, Sang-Ku ; Hong, Tchang-Hee ;
Journal of Navigation and Port Research, volume 26, issue 2, 2002, Pages 235~243
DOI : 10.5394/KINPR.2002.26.2.235
Theoretical analysis have been performed to design the high power semiconductor laser for an optical sensor at 1.55
wavelength range which is the lowest loss wavelength in optical fiber. The materials of active region and SCH were
. In order to use the light source of optical sensors, it has to satisfy wide spectral width and short coherence length. Therefore, in order to suppress lasing oscillation, we proposed laterally tilted PBH type with a window region. Also, tapered stripe structure was applied for high coupling efficiency into a single mode fiber. From these analyses, the devices of laterally tilted angled and bending structure were fabricated and their characteristics were measured. In the results of the measurement, the fabricated devices have sufficient output power and wide FWHM to apply to the light source of optical fiber sensors.
An Empirical Analysis for the Implementation of Safety Management System under ISM Code
Lee, Ok-Yong ;
Journal of Navigation and Port Research, volume 26, issue 2, 2002, Pages 245~259
DOI : 10.5394/KINPR.2002.26.2.245
According to ISM Code, from July 1, 1998 relevant shipping company and ships should establish, implement and maintain safety management system(SMS) both on ships as well as shore. Nonetheless the SMS has not yet been settled. This paper is prepared to seek for the problems occurred in relation to the implementation of SMS onboard and propose ideas to improve the system.