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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 37, Issue 6 - Dec 2013
Volume 37, Issue 5 - Oct 2013
Volume 37, Issue 4 - Aug 2013
Volume 37, Issue 3 - Jun 2013
Volume 37, Issue 2 - Apr 2013
Volume 37, Issue 1 - Feb 2013
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Development of a Cognitive Work Analysis Method for Safe Ship Navigation and a Case Study
Hong, Seung-Kweon ;
Journal of Navigation and Port Research, volume 37, issue 3, 2013, Pages 231~237
DOI : 10.5394/KINPR.2013.37.3.231
What to analyze cognitive works that are involved in ship navigation is a basic work to make alternatives for maritime safety such as development of bridge equipments, extraction of potential human errors and development of education/ training methods. In the domains in which much research on the human error has been performed such as aviation and nuclear plant, analysis methods for cognitive work analysis have been developed and applied to them. However, the research on the cognitive work analysis is not sufficient in the maritime domain. This paper proposes a method to analyze cognitive work of ship navigation. The method was developed so that some maritime characteristics and a variety of factors influencing cognitive works are reflected on cognitive work analysis processes. On the other hand, an ship collision accident was analyzed by the proposed method as a case study.
An Experiment on Walking Speeds of Freshmen Unexperienced in Shipboard Life on a Passenger Ship
Hwang, Kwang-II ;
Journal of Navigation and Port Research, volume 37, issue 3, 2013, Pages 239~244
DOI : 10.5394/KINPR.2013.37.3.239
To increase the safety of onboard evacuation of guests who is unfamiliar with onboard living conditions, this study measured and compared the onboard walking speeds of 81 participants on a passenger ship, I t were found that the walking speeds at corridor on navigation were slower than those at berth by 27.2%, and the speeds of walking on the corner on navigation were slower than those at berth by 23.2%. This means that the ship motion on navigation directly influenced walking speeds. The walking speeds of upward-stairs and downward-stairs were measured to be 0.71m/s and 0.75m/s, respectively. From the crowd counter-flow experiments, because of the narrow space between participants, the walking speeds were decreased as person after person. And it was clear that the group's walking speeds were determined by the walking speeds of leading person(s) of the group. The walking speeds obtained this study were different from those of IMO guideline(MSC/Circ 1033).
Research on Augmented Reality Services in Bridge for Navigational Safety
Oh, Jaeyong ; Park, Sekil ; Kim, Sun-Young ; Kwon, Ohseok ;
Journal of Navigation and Port Research, volume 37, issue 3, 2013, Pages 245~250
DOI : 10.5394/KINPR.2013.37.3.245
As maritime traffic increases and ships get bigger and faster, the risk of maritime accident increases. According to the recent reports on maritime accidents, more than 80% of the maritime accidents occur due to navigational mistakes and/or human errors. Even though many kinds of navigation systems based on new technology have been developed to reduce maritime accidents, we need to research the method for expressing and providing information. The efficient navigation system should be able to display information simply and intuitively to make decision quickly and accurately. In this paper, we proposed augmented reality based navigation system which can be utilized in bridge of the ships and described the services for navigational safety.
An Experimental Study on Ship-Bank Hydrodynamic Interaction Forces
Lee, Chun-Ki ;
Journal of Navigation and Port Research, volume 37, issue 3, 2013, Pages 251~256
DOI : 10.5394/KINPR.2013.37.3.251
This paper is mainly concerned with the ship-bank interaction by model test. The experiments for the characteristics of hydrodynamic interaction forces and moments between vessel and bank with a mound were carried out in the seakeeping and maneuvering basin. A series of tests were carried out with ship model in parallel course along a vertical sidewall with a mound with varying lateral spacing between model ship and sidewall, length of sidewall and water depth. From the experimental results, it indicated that the hydrodynamic interaction effects increase as length of sidewall with a mound increases. Furthermore, for lateral spacing less than about 0.2L between vessel and bank, it can be concluded that the bank effects increase largely as the lateral spacing between vessel and bank decreases. However, for spacing between vessel and bank more than about 0.3L, the interaction effects increase slowly as lateral spacing decreases. Also, for the water depth to draft ratio(h/d) less than about 1.5, the hydrodynamic interaction effects increase dramatically as h/d decreases.
A Study to Improve the Performance of a Fixd Type Fin Stabilizer with Coanda Effect
Seo, Dae-Won ; Lee, Se-Jin ; Lee, Seung-Hee ;
Journal of Navigation and Port Research, volume 37, issue 3, 2013, Pages 257~262
DOI : 10.5394/KINPR.2013.37.3.257
A ship operating in rough sea may suffer from an undesirable motion which may severely degrade the performance of equipment onboard and give a person an uncomfortable feeling. Hence, roll stabilization received a considerable attention and various devices including bilge keels, stabilizing fins, gyroscopic, anti-rolling tanks, rudders and flaps have been conceived and utilized for the purpose. The Coanda effect is evident when a jet stream is applied tangential to a curved surface of a hydrofoil since then the jet increases the circulation around the foil and consequently the lift. Model tests and numerical simulation have been conducted to examine the practicality of a fixed type fin stabilizer augmented by the Coanda jet. The results show that the lift coefficient of the modified Coanda fin at the zero angle of attack identically coincides with that of the original fin at
when Coanda jet is supplied at the rate of
= 0.25. It is also shown that fixed type fin stabilizers for active control of the motions of ships and the other mobile units without rotation can be put to practical use if the Coanda effect is applied.
Pseudolite-based Wide Area Differential GPS (WA-DGPS) Development and Primary Results
Park, Hwang-Hun ; Jo, Hak-Hyeon ; Yun, Ho ; Kee, Changdon ;
Journal of Navigation and Port Research, volume 37, issue 3, 2013, Pages 263~267
DOI : 10.5394/KINPR.2013.37.3.263
This paper describes the progress and the plan of 'Wide Area Differential GPS (WA-DGPS) Development' project supported by Korean Ministry of Oceans and Fisheries. The project develops the main algorithms of the WA-DGPS which guarantees the improved accuracy, availability, and integrity all over the Korean peninsula. After the establishment of WA-DGPS ground infrastructure system, a real-time demonstration using pseudolite installed on the ground will be conducted in the final year. Also, the development of Korean Satellite-based Augmentation System (SBAS) is expected to be started from 2014, and the algorithms and the results in the WA-DGPS project will be used in the SBAS development.
Performance Evaluation of Underwater Acoustic Communication using Transmit Diversity in Water Tank
Park, Chan-Sub ; Kim, Ki-Man ;
Journal of Navigation and Port Research, volume 37, issue 3, 2013, Pages 269~273
DOI : 10.5394/KINPR.2013.37.3.269
Underwater acoustic channels are generally recognized as one of the most difficult communication media because of the multipath propagation, dispersion, and so on. MIMO (Multiple-input multiple-output) techniques have been actively pursued in underwater acoustic communications recently to increase the data rate over the bandwidth-limited channels. The transmit diversity techniques can be applied in this case, and one of them is Alamouti's scheme. In this paper the performances of the transmit diversity technique are evaluated via experiment. Two transmitters and two receivers were used in experiment, and the experiment was performed in indoor water tank. The error rate 5~8% was confirmed in experimental results, and these are the improved values than the error rate 14.8% for SISO(Single-input single-output) channel under same data rate condition.
Development of a 4S Multiple Media Switching Server and an Information Exchange System
Mun, Seong-Mi ; Jang, Won-Seok ; Son, Joo Yong ; Yang, Gyu-Sik ;
Journal of Navigation and Port Research, volume 37, issue 3, 2013, Pages 275~281
DOI : 10.5394/KINPR.2013.37.3.275
Ship Standard Network was submitted as a common subject of e-navigation by 81th IMO MSC 2005. This agenda was given an official status with strategy planning of e-navigation for Ship Standard Network after approval of WG program of 81th MSC 2006. Nowadays approximately 400 heterogeneous navigation and communication equipments are working on ships at sea. Standardization of ship network is to support exchanging various data efficiently. Among them, 4S network is defined as a wireless communication network between ship to ship and ship to shore which provides unceasing communication channel ship to shore. It has been expected to trigger various services and applications based on 4S network. However, no technologies and products has been appeared at fields yet. but now there's not specific technologies and developing products. In this paper, We developed a 4S multiple media switching server and a ship-land information exchange system to overcome the heterogeneity and provide efficient communication environments.. The performance of the implemented system was verified by TTA(Telecommunications Technology Association) V&V(Verification and Validation).
Numerical Analysis of Waves coming with Oblique Angle to Submerged Breakwater on the Porous Seabed
Kim, Nam-Hyeong ; Woo, Su-Min ;
Journal of Navigation and Port Research, volume 37, issue 3, 2013, Pages 283~289
DOI : 10.5394/KINPR.2013.37.3.283
Wave profiles coming with oblique angle to trapezoidal submerged breakwater on the porous seabed are computed numerically by using a boundary element method. The analysis method is based on the wave pressure function with the continuity in the analytical region including fluid and structure. When compared with the existing results on the oblique incident wave, the results of this study show good agreement. The fluctuation of wave profiles is increased in the rear of the submerged breakwater due to the increase of the transmission coefficient, as the incident angle increases. In addition, in the case of the wave profiles passing over the submerged breakwater on porous seabed, it is able to verify that the attenuation of wave height occurs more significantly due to the wave energy dissipation than that of passing over the submerged breakwater on the impermeable seabed. The results indicate that wave profile own high dependability regarding the change of oblique incident waves and porous seabed. Therefore, the results of this study are estimated to be applied as an accurate numerical analysis referring to oblique incident waves and porous seabed in real sea environment.
Analyses of Perceptions to Hindering Factors and Development Factors for Water Leisure Activation
Cho, Woo-Jeong ; Jang, Bo-Young ;
Journal of Navigation and Port Research, volume 37, issue 3, 2013, Pages 291~298
DOI : 10.5394/KINPR.2013.37.3.291
The purpose of this study was to analyze perceptions to hindering factors and development factors for water leisure activation. In order to accomplish the study purpose, this study employed a survey method with water leisure participants and employees from 6 regions(participants=205, employees=117). The data were analyzed using independent t-tests at a=.05 and following findings were derived from current study. First, among 20 hindering factors, water leisure participants had higher levels of perceptions than employees in licence system, limited activation regulation, departure report regulation, absence of exclusive organization, lack of providing information, lack of participative events and support systems. Second, relatively highly perceived hindering factors included departure report regulation, limited activation regulation, licence system, lack of government support, lack of mooring facility and lack of exclusive charged organization, in order. Third, the important development factors perceived by participants included support for licence and education and diversified water leisure programs but those perceived by employees included placement of educated experts and related event host and publicity. Finally, relatively highly perceived development factors included activation of free experience, promotion of marina development, support for licence and education, diversified programs and support for water leisure business. Accordingly, the findings provided fundamental information that both central and regional government can utilize for further activating water leisure. In addition, several development strategies were discussed on financial support, facility support, human resource support, education support and event support perspectives.
The Effects of a Marine Leisure Exhibition Event's Service Quality Dissatisfaction on Complaining Behaviors and Repurchase Intentions
Cho, Woo-Jeong ;
Journal of Navigation and Port Research, volume 37, issue 3, 2013, Pages 299~307
DOI : 10.5394/KINPR.2013.37.3.299
The purpose of this study were to analyze the effects of a marine leisure exhibition event(MLEE)'s service quality dissatisfaction levels on complaining behaviors and repurchase intentions and thus to provide fundamental marketing information for the event to be more successful. In order to accomplish such study purposes, this study employed a survey method with a total of 350 visitors to a MLEE hosted by G Province in 2012. The data collected were analyzed using multiple regression analysis and following findings were derived from current study. First, levels of service quality dissatisfaction were ranged from 3.29 point to 3.85 point at 7 point Likert scale. Second, both environment and exhibition facility had a positive effect on visitors' complaining behaviors, and both employee and environment factors had a positive effect on non complaining behavior. Third, only exhibition facility had a negative effect on repurchase behaviors including revisit intention and recommendation intention. Finally, complaining behavior had a negative effect on recommendation intention as well as revisit intention. Such findings provide important marketing information for induce more visitors to a MLEE, which are an index for the event's performance.
Technology Development for Composite Sensor System of Automatic Guided Vehicle(AGV) Using RFID/IMU/Encoder/Proximity Sensor
Shin, Hee-Young ; Choi, Hyeung-Sik ; Kim, Hwan-Seong ; Jung, Sung-Hun ;
Journal of Navigation and Port Research, volume 37, issue 3, 2013, Pages 309~313
DOI : 10.5394/KINPR.2013.37.3.309
This paper is about a complex sensor system of an automatic guided vehicle(AGV) for loading and unloading payloads. For the AGV to approach to the target rack for loading and unloading the payload, a way to identify the position and orientation was studied. To identify the position and orientation of the AGV accurately, a complex sensor system composed of RFID, IMU, and limit sensors was developed, and the performance of each sensor was undertaken. A model AGV was constructed, and the good performance of the developed complex sensor system was verified through performance experiments.
A Study on the Floating Building as a New Paradigm of Architecture
Moon, Chang-Ho ;
Journal of Navigation and Port Research, volume 37, issue 3, 2013, Pages 315~320
DOI : 10.5394/KINPR.2013.37.3.315
According to climate change, deficiency of usable land, large water portion of the Earth surface, and improvement of income level, floating architecture is emerging as a strong & attractive alternative. The aim of this study is to suggest some related applying ways for new building projects around waterside. New paradigm of architecture can be described as a new model and/or system of architecture with new concept and Zeitgeist like sustainability and green building. Floating building is already a new paradigm of architecture comparing with the preconception of building only on the land and current building regulations. New paradigm features from the sample projects can be summarized as new concepts of building, application of various renewable energy resources(water, solar, wind), modular construction, use of local raw material, dual purpose usage, long term and relocatable usage, and special building materials for green building.
A Combined Optimization/Simulation Approach to the Reconfiguration of Express Delivery Service Network for Strategic Alliance
Ko, Chang-Seong ; Kim, Hong-Bae ; Ko, Hyun-Jeung ;
Journal of Navigation and Port Research, volume 37, issue 3, 2013, Pages 321~327
DOI : 10.5394/KINPR.2013.37.3.321
As the market of express delivery services expands rapidly, delivery service companies are exposed to severe competition. As a result of the surplus of delivery companies, they are struggling with remaining competitive at a reasonable price with appropriate level of customer satisfaction. To cope with competition pressures, a strategic alliance is suggested as an effective solution to the challenges faced by small and medium enterprises (SMEs) in express delivery services. Therefore, this study suggests a combined optimization and simulation approach to the reconfiguration of an express delivery service network for strategic alliance with respect to strategy partnership of closing/keeping service centers among companies involved and adjustments of their cutoff times. An illustrative numerical example is presented to demonstrate the practicality and efficiency of the approach.