• Journal of Digital Convergence
• /
• v.17 no.3
• /
• pp.63-71
• /
• 2019

The cruise industry is a future-oriented convergence industry based on tourism and shipping, and has attracted great attention not only in the global market but also in Korea. The rapid growth of Asian cruise population, especially in China, has had a considerable impact on both the global market as well as the Korean market. With the recent THAAD problem, the need for diversification of the market has been raised as the entry of cruise tourists from China has been greatly reduced. It is also time for a more systematic and comprehensive development strategy ahead of the opening of the new cruise terminal. This study draws out the problems based on the interviews with experts such as prefectures, travel agencies, and related organizations, as well as analyzing literature on domestic and overseas government plans, policy reports, and research data. Then, the SWOT analysis is used to develop the development strategy and explore the policy support direction. The research scope can be extended to sustainable development model through wider linkage of mid to long term strategy and policy.

• Journal of Dental Rehabilitation and Applied Science
• /
• v.35 no.1
• /
• pp.37-45
• /
• 2019

In the case of edentulous patients, the total amount of occlusal force is dispersed by the keratinized gingiva during mastication, in result, causing lower masticatory and chewing efficiency. In particular, the mandibular area has more side effects such as pain than the maxilla has. It gets worse when the patient has more absorption of alveolar bone, but the implant treatment is often interrupted due to the existence of the inferior alveolar nerve. In this case, a patient treated with the all-on-4 method by placing the implant in the anterior part of mandible and with the conventional complete denture for the maxilla has maintained without complications and was satisfied with the restoration both functionally and esthetically.

• PNF and Movement
• /
• v.19 no.1
• /
• pp.43-55
• /
• 2021

Purpose: The purpose of this study was to determine the effects of contract relaxation and a combination of isotonics in proprioceptive neuromucular facilitation (PNF) on hip and lumbopelvic motions of male patients with chronic low back pain. Methods: As the subjects of this study, a total of 45 male patients with chronic low back pain were divided into groups: 15 who underwent contract relaxation (CR) of the PNF of their hip joints, 15 who underwent a combination of isotonics (CI) of the PNF, and 15 who underwent both techniques. A device for analyzing three-dimensional motion was used to measure hip medial rotation angles, lumbopelvic rotation angles, and hip medial rotation angles at the start of lumbopelvic rotation during hip medial rotation. A two-way repeated measures ANOVA was used to compare the average values. Results: There were interactions in the hip medial rotation angles, lumbopelvic rotation angles and hip medial rotation angles at the start of lumbopelvic rotation based on the methods and periods of exercise (p < 0.05). The CR and the CR+CI groups displayed more increased hip medial angles when compared to the CI group. The CR+CI group had more decreased lumbopelvic rotation angles when compared to the CR and the CI groups. The CR+CI group had more increased hip medial rotation angles at the start of lumbopelvic rotation when compared to the CR and the CI groups. Conclusion: It can be concluded that the combination of stretching and stability exercises was effective in male patients with chronic low back pain who showed limited hip medial rotation.

• Journal of the Institute of Convergence Signal Processing
• /
• v.22 no.1
• /
• pp.7-13
• /
• 2021

In recent years, the importance of environmental regulations is increasing in the shipping industry, and the demands of the industry for this are rapidly increasing. Accordingly, the demand of ship owners is increasing as the shaft generator is a technology that responds to environmental regulations that can be applied to ships the fastest. The shaft generator is a device that can increase the fuel consumption rate of the main propulsion engine by installing an electric motor in the main propulsion engine and using it variably according to the load environment. It operates by the power of the motor at low speeds, and when a sudden load is required, the main propulsion engine and motor operate together, enabling efficient operation. In this paper, the diesel engine and shaft generator of a tug boat are modeled using MATLAB Simulink, and the fuel consumption rate is verified through simulation.

• Journal of Navigation and Port Research
• /
• v.44 no.6
• /
• pp.469-476
• /
• 2020

Modeling and Simulation (M&S) systems which deal with situational complexity often require human involvement due to the high-level decision-making that is necessary for ship movement, navigation, control center management, shipping company logistics, meteorological system information, and maritime transportation GIS. In order to properly simulate maritime traffic, it is necessary to accurately model the human decision-making process of the ship officer, including aspects of the ship officer's behavioral tendencies, personal navigation experience, and pattern of voyage errors, as this is the most accurate way in which to reproduce and predict realistic maritime traffic conditions. In this paper, which looks at agent-based maritime traffic simulation, we created a basic survey in order to conduct behavior analysis on ship operators' collision avoidance strategies. Using the information gathered throughout the survey, we developed an agent-based navigational behavior model which attempts to capture the behavioral patterns of a ship officer during an instance of ship collision. These results could be used in the future in further developments for more advanced maritime traffic simulation.

• Journal of Arbitration Studies
• /
• v.31 no.1
• /
• pp.23-54
• /
• 2021

While maritime arbitration industry has not been prevalent in Korea, Korea ranked fifth in terms of export volume and its shipbuilding industry ranked top globally in shipbuilding order volume in 2020. The discrepancy between the maritime industry's productivity and relative lack of maritime arbitration has had a negative impact on Korea's economic development. To address these problems, this paper i) reviews preceding research, ii) examines the Korean maritime arbitration system's status and analyzes the KCAB's maritime arbitration statistics from 2005-2020, iii) examines major foreign maritime arbitration institutions' status and strategies including LMAA, SMA, SCMA, and HKMAG, and lastly iv) suggests practical ways to promote maritime arbitration in Korea. The Suggestions for promoting maritime arbitration are 1) to prepare and promote various maritime standardized forms for the Korean shipping industry, 2) to insert an arbitration clause in medium and large-size Korean shipping firms' B/L clause, 3) to expand professional maritime manpower training and other infrastructure, and 4) to enhance the predictability of the result of arbitration through maritime arbitral awards or by examining the feasibility of the appeal system against the arbitral award only on a point of law in the future. In conclusion, the success or failure of promoting maritime arbitration in Korea depends on the will, passion, cooperation and practice of the most important key players in maritime arbitration, such as the Asia Pacific Maritime Arbitration Center (APMAC), the Korean Commercial Arbitration Board (KCAB) and the Seoul Maritime Arbitrators Association (SMAA).

• Proceedings of the Korean Institute of Navigation and Port Research Conference
• /
• 2021.11a
• /
• pp.74-75
• /
• 2021

At the 104th IMO MSC, it was decided to make a code for the operation of MASS(Maritime Autonomous Surface Ship). In addition, the government announced a roadmap for preemptive regulatory innovation for autonomous ships and identified 31 related regulatory issues and suggested improvements to revitalize the autonomous ship industry. This study aims to analyze the ship turning left on the route as a study on how to operate the route system when operating MASS. We intend to derive the current congestion degree of the special area of Busan New Port through maritime traffic survey and use simulation to derive the congestion degree of the special area due to the size of ships and increase in traffic volume. We would like to propose an appropriate amount of traffic (the number of L-converted). It is believed that the research results can be used as basic data for route operation when operating not only current ships but also MASS.

• Allergy, Asthma & Respiratory Disease
• /
• v.12 no.2
• /
• pp.85-92
• /
• 2024

Purpose: Contact dermatitis (CD) is a common skin disease caused by various allergens that can be identified by patch test (PT). Despite the analysis of PT outcomes in various regions of Korea, no specific investigation has targeted the Busan area. We aimed to analyze PT results using Chemotechnique in patients suspected of CD in Busan. Methods: We reviewed medical records of 273 patients who underwent PT between 2019 and 2020 at two university hospitals in Busan. PT results were interpreted according to the International Contact Dermatitis Research Group criteria. Results: Among the patients, 86.4% exhibited positive reactions to at least one allergen. Those with positive outcomes displayed a higher comorbidity rate of chronic urticaria but a lower rate of atopic dermatitis. Moreover, they reported higher positivity rates to questions about sexual life and treatment on the Dermatology Life Quality Index questionnaire. Major allergens in Busan were cobalt chloride (60.1%), nickel sulfate (52.0%), and potassium dichromate (50.9%), followed by thiomersal, balsam of Peru, and fragrance mix (17.2%, 15.4%, and 13.9%, respectively). Captan, budesonide, and colophony were more prevalent allergens in males. While the positive rate for thiomersal were higher in the younger age group, balsam of Peru allergen was higher in the older age group. Conclusion: This study represents the first PT analysis conducted in Busan, revealing metal-related allergen as the most common cause of CD, with variations observed across sex and age. Further research is needed to validate these findings and elucidate the sources and pathways of allergen exposure in Busan.

• Journal of Advanced Navigation Technology
• /
• v.28 no.4
• /
• pp.497-506
• /
• 2024

In this study, we proposed security information and event management for ship as a technology to respond to maritime cybersecurity regulations and evolving cyber threats. We analyze the main technologies of network management system and security information and event management, which are representative technologies for responding to ship cyber security, and propose SIEM for ships based on this. Optimized for ships based on the International Maritime Organization's Maritime Cyber Threat Management Guidelines, IACS UR E26, 27, etc. Derive the main functions of the SIEM for ship, linkage and normalization plan for the ship's heterogeneous equipment, ship's cyber threat and ship detection policy to identify ship's cyber security threats, and ship's operating environment and operating personnel.

• Journal of Korea Port Economic Association
• /
• v.38 no.3
• /
• pp.105-131
• /
• 2022

Even after the improvement in 2019, UNCTAD's Liner Shipping Connectivity Index (LSCI), which evaluates the performance of the global container port market, has limited use. In particular, since the liner shipping connectivity index evaluates the performance based only on the distance of the relationship, the performance index combining the port attractiveness of calling would be more efficient. This study used the modified Huff model, the hub-authority algorithm and the eigenvector centrality of social network analysis, and correlation analysis for 2007, 2017, and 2019 data of Ocean-Commerce, Japan. The findings are as follows: Firstly, the port attractiveness of calling and the overall performance of the port did not always match. However, according to the analysis of the attractiveness of a port calling, Busan remained within the top 10. Still, the attractiveness among other Korean ports improved slowly from the low level during the study period. Secondly, Global container ports are generally specialized for long-term specialized inbound and outbound ports by the route and grow while maintaining professionalism throughout the entire period. The Korean ports continue to change roles from analysis period to period. Lastly, the volume of cargo by period and the extended port connectivity index (EPCI) presented in this study showed a correlation from 0.77 to 0.85. Even though the Atlantic data is excluded from the analysis and the ship's operable capacity is used instead of the port throughput volume, it shows a high correlation. The study result would help evaluate and analyze global ports. According to the study, Korean ports need a long-term strategy to improve performance while maintaining professionalism. In order to maintain and develop the port's desirable role, it is necessary to utilize cooperation and partnerships with the complimentary port and attract shipping companies' services calling to the complementary port. Although this study carried out a complex analysis using a lot of data and methodologies for an extended period, it is necessary to conduct a study covering ports around the world, a long-term panel analysis, and a scientific parameter estimation study of the attractiveness analysis.