• Title/Summary/Keyword: Operation Strategies

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Forecasting the Container Volumes of Busan Port using LSTM (LSTM을 활용한 부산항 컨테이너 물동량 예측)

  • Kim, Doo-hwan;Lee, Kangbae
    • Journal of Korea Port Economic Association
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    • v.36 no.2
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    • pp.53-62
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    • 2020
  • The maritime and port logistics industry is closely related to global trade and economic activity, especially for Korea, which is highly dependent on trade. As the largest port in Korea, Busan Port processes 75% of the country's container cargo; the port is therefore extremely important in terms of the country's national competitiveness. Port container cargo volume forecasts influence port development and operation strategies, and therefore require a high level of accuracy. However, due to unexpected and sudden changes in the port and maritime transportation industry, it is difficult to increase the accuracy of container volume forecasting using existing time series models. Among deep learning models, this study uses the LSTM model to enhance the accuracy of container cargo volume forecasting for Busan Port. To evaluate the model's performance, the forecasting accuracies of the SARIMA and LSTM models are compared. The findings reveal that the forecasting accuracy of the LSTM model is higher than that of the SARIMA model, confirming that the forecasted figures fully reflect the actual measurement figures.

Multi-sensor Fusion Based Guidance and Navigation System Design of Autonomous Mine Disposal System Using Finite State Machine (유한 상태 기계를 이용한 자율무인기뢰처리기의 다중센서융합기반 수중유도항법시스템 설계)

  • Kim, Ki-Hun;Choi, Hyun-Taek;Lee, Chong-Moo
    • Journal of the Institute of Electronics Engineers of Korea SC
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    • v.47 no.6
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    • pp.33-42
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    • 2010
  • This research propose a practical guidance system considering ocean currents in real sea operation. Optimality of generated path is not an issue in this paper. Way-points from start point to possible goal positions are selected by experienced human supervisors considering major ocean current axis. This paper also describes the implementation of a precise underwater navigation solution using multi-sensor fusion technique based on USBL, GPS, DVL and AHRS measurements in detail. To implement the precise, accurate and frequent underwater navigation solution, three strategies are chosen. The first one is the heading alignment angle identification to enhance the performance of standalone dead-reckoning algorithm. The second one is that absolute position is fused timely to prevent accumulation of integration error, where the absolute position can be selected between USBL and GPS considering sensor status. The third one is introduction of effective outlier rejection algorithm. The performance of the developed algorithm is verified with experimental data of mine disposal vehicle and deep-sea ROV.

THINNED PIPE MANAGEMENT PROGRAM OF KOREAN NUCLEAR POWER PLANTS

  • Lee, S.H.;Lee, Y.S.;Park, S.K.;Lee, J.G.
    • Corrosion Science and Technology
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    • v.14 no.1
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    • pp.1-11
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    • 2015
  • Local wall thinning and integrity degradation caused by several mechanisms, such as flow accelerated corrosion (FAC), cavitation, flashing and/or liquid drop impingements, are a main concern in carbon steel piping systems of nuclear power plant in terms of safety and operability. Thinned pipe management program (TPMP) had been developed and optimized to reduce the possibility of unplanned shutdown and/or power reduction due to pipe failure caused by wall thinning in the secondary side piping system. This program also consists of several technical elements such as prediction of wear rate for each component, prioritization of components for inspection, thickness measurement, calculation of actual wear and wear rate for each component. Decision making is associated with replacement or continuous service for thinned pipe components. Establishment of long-term strategy based on diagnosis of plant condition regarding overall wall thinning is also essential part of the program. Prediction models of wall thinning caused by FAC had been established for 24 operating nuclear plants. Long term strategies to manage the thinned pipe component were prepared and applied to each unit, which was reflecting plant specific design, operation, and inspection history, so that the structural integrity of piping system can be maintained. An alternative integrity assessment criterion and a computer program for thinned piping items were developed for the first time in the world, which was directly applicable to the secondary piping system of nuclear power plant. The thinned pipe management program is applied to all domestic nuclear power plants as a standard procedure form so that it contributes to preventing an accident caused by FAC.

The Development and Application of Elementary Science Convergence Program using Anamorphic Optical Illusion Art (아나모픽 착시예술을 활용한 초등 과학 융합 프로그램 개발 및 적용)

  • Ahn, Jaehong;Kwon, Nanjoo
    • Journal of Korean Elementary Science Education
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    • v.34 no.2
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    • pp.224-237
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    • 2015
  • In this study, in regard to the change of the paradigm to STEAM (Science, Technology, Engineering, Arts, and Mathematics), we have looked into the ways to apply scientific inquiry through the arts, discussed the educational implications for the ways to step forth with the science and the arts in educational field. In the development of the strategies related to the optical illusion arts, to make sure that the design-oriented science education to reach its goal to make effective teaching, students need to be understood in the method of the artistic designs. Totally it had two rounds for inspection about operation of the convergence with curriculum. As a result, students changed attitude to concentrate in class naturally while doing their art work, participating in person rather than simply looking. It is caused by the scientific approach to strategy of illusion arts. In addition, we could see that students change into a proactive manner as well as teachers comments that they are communicate and make a complete the work with others. A lot of researches give that science can provide the ideas as a method to arts, arts can provide creative ideas to science, but it is still lacking that research can be applied to education specifically on how to. An efforts in the number of collaborative research will continue to introduce, as this study STEAM of science and arts in the field of education be shifted paradigm.

Deriving the Effective Improvement Elements of the Emergency Room in Large General Hospitals (신종 감염병 환자의 효율적 처치를 위한대형병원 응급실 관리요소의 중요도 도출)

  • Yoon, Songyi
    • Journal of Korean Critical Care Nursing
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    • v.8 no.2
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    • pp.66-79
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    • 2015
  • Purpose: This study aimed to derive the elements for effectively improving the management of emerging infectious diseases in the emergency room in large general hospitals. Methods: This research involved an analytic hierarchy process analysis of 10 experienced nurses working in a large general hospital located in the Seoul metropolitan area. The weighted values of the criteria for evaluating the importance of the management elements of patients with emerging infectious diseases in the emergency room of large general hospitals were derived using an analytic hierarchy process survey. Results: The results of the analytic hierarchy process analysis showed that experts considers responsiveness (0.291) as most important with respect to the criteria for the policy for isolation and control of infectious patients. The order of importance of the criteria for the policy for isolation and control of infectious patients were as follows: responsiveness (0.291), economical efficiency (0.257), feasibility (0.242), and sustainability (0.209). Subsequently, the weighted values of the management of the policy elements were determined based on the derived importance of the criteria mentioned above. These were, in order of priority, the construction of communication channels with the government authorities when dealing with emerging infectious diseases (15.9%), the equipment and provision of personal protective equipment to protect nurses from infection and dissemination of material (14.6%), and the operation of the isolation room and patient separation systems (14.1%). Conclusion: This study suggests critical strategies for infection control during a pandemic of emerging infectious disease.

Analysis on the Satisfaction by MICE Participants in Busan Metropolitan (부산 MICE 참가자의 만족도 분석)

  • Kang, Hae-Sang;Song, Kang-Young
    • The Journal of the Korea Contents Association
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    • v.10 no.11
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    • pp.414-423
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    • 2010
  • The purpose of this study was to provide basic data to establish MICE(meeting, incentive, convention, exhibition) marketing strategies in Busan Metropolitan by examining its satisfaction level. Surveys were conducted for participants of 10 cases of Meetings, Incentive, Conventions and Exhibition in Busan Metropolitan. A time series analysis was performed by its data from 2002 to 2008. Research findings showed that accomodations, facilities and MICE operation were highly scored, while connected tour, shopping, easy access to airport, and interpretation were scored relatively low. Especially connected tour was scored very low. Therefore, we should concentrate on tourism attractions and tourism information services to improve visitors satisfactions. Second, we should develop shopping items to improve satisfactions of MICE visitors. Since this study only targeted the 10 MICEs they cannot represent the entire MICEs in Busan and absolute comparison was difficult because of different content and size of each MICE, which could be the limitation of this study.

Advancement in Mobile Service and Successful Model for Mobile Contents (모바일 서비스의 진화와 성공적인 모바일 콘텐츠 모델)

  • Suh, Byung-Moon
    • Journal of Korea Society of Industrial Information Systems
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    • v.13 no.4
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    • pp.24-34
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    • 2008
  • The study aims to anticipate evolution direction of mobile content business in the future, and derive successful strategies at the same time with multiple and composite analysis of evolution process and environmental change of mobile business. In conclusion, Firstly, it should strengthen customer approach performance, secondly, approaches with sensitively, and needs opened business model. Fourthly, it needs planning and production of contents which reflects the need of customers, and fifthly, it requires development of mobile platform leading contents group and multiplication of CP business model. In the aspect of industrial policy, sustainable and future-oriented policy should be arranged rather than short-term and simple police, for the continual development of mobile content industry. To establish healthy and active mobile contents industry, the government and regulatory institutes are more preferable to devote to the role of circumstance builder rather than the leader of mobile content market. In other words, they are recommended to focus on establishing basic regulation and order for smooth operation of the market and its management.

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A risk management methodology for maritime logistics and supply chain applications

  • Mokhtari, Kambiz;Ren, Jun
    • Ocean Systems Engineering
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    • v.4 no.2
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    • pp.137-150
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    • 2014
  • In the marine industry although there has been significant growth towards safety, security and risk assessments or risk-based strategies such as marine insurance and regulations to avoid the risks of damage to properties and the environment or the prospect of premature death caused by accidents etc, the moves toward managing the risks which are linked directly to the business functions and decision making processes have been very slow. Furthermore in the marine industry most perceptions, methodologies and frameworks of dealing with hazards, risks, safety and security issues are for their assessment rather than their management. This trend reveals the fact that in different marine industry sectors such as logistics and shipping there is a lack of coherent risk management framework or methodology from which to understand the risk-based decisions especially for the purpose of design, construction, operation, management and even decommissioning of the marine related applications. On the other hand risk management is not yet viewed holistically in the marine industry in order to, for example, assign a right person, i.e. risk manager, who can act as a coordinator and advisor with responsibilities that are only specific to risk management. As a result this paper, by examining the present physical borders and risk-based activities in the marine industry, aims to propose an appropriate risk management methodology in addition to the emergent role of risk managers which will enable the industry users initially to become familiar with the concept of risk management at its holistic level. In the later stages this eventually can lead to development of risk management capabilities at an exclusive level and its integration into the marine industry functions in future.

A Study on the Analysis of Agricultural and Livestock Operations Using ICT-Based Equipment

  • Gokmi, Kim
    • International journal of advanced smart convergence
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    • v.9 no.1
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    • pp.215-221
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    • 2020
  • The paradigm of agriculture is also changing to address the problem of food shortages due to the increase of the world population, climate conditions that are increasingly subtropical, and labor shortages in rural areas due to aging population. With the development of Information Communication Technology (ICT), our daily lives are changing rapidly and heralds a major change in agricultural management. In a hyper-connected society, the introduction of high-tech into traditional Agriculture of the past is absolutely necessary. In the development process of Agriculture, the first generation produced by hand, the second generation applied mechanization, and the third generation introduced automation. The fourth generation is the current ICT operation and the fifth generation is artificial intelligence. This paper investigated Smart Farm that increases productivity through convergence of Agriculture and ICT, such as smart greenhouse, smart orchard and smart Livestock. With the development of sustainable food production methods in full swing to meet growing food demand, Smart Farming is emerging as the solution. In overseas cases, the Netherlands Smart Farm, the world's second-largest exporter of agricultural products, was surveyed. Agricultural automation using Smart Farms allows producers to harvest agricultural products in an accurate and predictable manner. It is time for the development of technology in Agriculture, which benchmarked cases of excellence abroad. Because ICT requires an understanding of Internet of Things (IoT), big data and artificial intelligence as predicting the future, we want to address the status of theory and actual Agriculture and propose future development measures. We hope that the study of the paper will solve the growing food problem of the world population and help the high productivity of Agriculture and smart strategies of sustainable Agriculture.

Dementia Response Technology Development Strategy through PEST-SWOT Analysis

  • Yu, Tae Gyu
    • International journal of advanced smart convergence
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    • v.9 no.1
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    • pp.185-192
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    • 2020
  • The number of dementia patients in Korea is expected to increase to 3.30 million in 2050, and the cost of dementia management will increase sharply to KRW 106.5 trillion of GDP. In August 2017, the Moon Jae-in government announced the 'Dementia National Responsibility System' through a five-year plan for government operation and expanded the Dementia Peace Center nationwide. However, for this, strategic dementia-related technology development strategies should be established and given the role of government and the role of the private sector. Therefore, in order to derive the corresponding strategy, this study developed the government's 'dementia' response technology development strategy through the situation analysis from the political, economic, social, and technological perspective and the environmental (PEST) analysis of the strengths, weaknesses, opportunities, and threats (SWOT). As a result, the direction of technology development in the dementia-related medical device market is expected to become a trend of developing dementia self-measurement by developing low-cost and high-efficiency diagnostic technology products. It has been shown that the development of various products for consumers should begin. As a result, the dementia market approach strategy should be premised, the related technical support and legal restrictions should be minimized, and the education of related experts should be strengthened to solve the government's development of dementia technology and the social problems of dementia. In addition, by developing joint projects with major companies around the world and actively participating in the technology platform, it is important to naturally build up skills accumulation for the development of dementia technology and competence skills of dementia technology experts in the long term.