• Journal of Korean Society of Water and Wastewater
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• v.21 no.2
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• pp.151-164
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• 2007

Criteria for rehabilitation priority are discussed to evaluate structural stability of deteriorated water transport and transmission pipes, in this study. For the purposes, safety factor is introduced and estimated by measuring tensile strength and by analyzing stress caused by the internal-external loads working on buried pipe body. Related informations are surveyed and collected under various conditions in the fields by digging out and the structural stability is assessed. In the evaluation results of structural safety, it is shown that steel pipe is more affected by external load than internal load. The average external load is estimated as $53.7kg/cm^2$ and total hoop stress is estimated by $2676.5kg/cm^2$. Also, Poisson effect into longitudinal direction due to internal and external loads is most influential on hoop stress. The calculated safety factors of hoop stress are ranged from 0.7 to 5.2 with average value of 2.1, considering a bending stress to longitudinal direction. The decision of rehabilitation priority by safety factors show that structural safety of CIP sample 1(S1) was assessed at the lowest order with safety factor value, 0.7 and that of DI sample 15(S15) was evaluated as the most stable in structural aspect.

• Proceedings of the Safety Management and Science Conference
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• 2013.04a
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• pp.301-310
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• 2013

This study compared the disasters in construction field under construction amount of 300,000,000 won and the whole construction fields in order to improve the efficacy of various industrial safety and health policies and services and examined the characteristics of disasters in construction field under 300,000,000 won. It also examined, compared and analyzed the characteristics of disaster in construction field under construction amount of 300,000,000 won that disaster prevention technical experts saw. The subjects of comparison were selected with statistical data of disaster for 2011 and those of disaster in construction field under construction amount of 300,000,000 won from January to August of 2012. And questionnaire was conducted with technical instruction experts of small-sized construction field and priority was drawn, compared and analyzed with AHP. Consequently, the results of different views between actual disaster data and experts' views were obtained. Therefore, this study suggested the characteristics of disaster in construction field under construction amount of 300,000,000 won and presented the methods for improving disaster prevention technical experts.

• Proceedings of the KIEE Conference
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• 2001.07d
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• pp.2369-2373
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• 2001

Usually the static scheduling algorithms such as DMS (Deadline Monotonic Scheduling) or RMS(Rate Monotonic Scheduling) are used for CAN scheduling due to its ease with implementation. However, due to their inherently low utilization of network media, some dynamic scheduling approaches have been studied to enhance the utilization. In case of dynamic scheduling algorithms, two considerations are needed. The one is a priority inversion due to rough deadline encoding into stricted arbitration fields of CAN. The other is an arbitration delay due to the non-preemptive feature of CAN. In this paper, an extended algorithm is proposed from an existing EDS(Earliest Deadline Scheduling) approach of CAN scheduling algorithm haying a solution to the priority inversion. In the proposed algorithm, the available bandwidth of network media can be checked dynamically by all nodes. Through the algorithm, arbitration delay causing the miss of their deadline can be avoided in advance. Also non real-time messages can be processed with their bandwidth allocation. The proposed algorithm can achieve full network utilization and enhance aperiodic responsiveness, still guaranteeing the transmission of periodic messages.

• Journal of Internet Computing and Services
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• v.22 no.4
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• pp.99-110
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• 2021

Governments around the world are actively establishing strategies and initiatives to spread the use of artificial intelligence (AI), for AI is not a mere new technology, but is an innovative technology that brings about extensive changes in industrial and social structures and is a core engine that will lead the 4th Industrial Revolution. The South Korean government has also been paying attention to AI as a technology and tool for innovative growth, but its application to the industries is still rather sluggish. The government has prepared multifarious AI-related policies with the aim of constructing South Korea as an AI powerhouse, but there is no clear strategy on which detailed policies to implement first and which industries to apply AI preferentially. With these limitations of South Korea's AI policies in mind, this paper analyzed the priorities of industries in AI adoption and the priorities of AI-related national policies, using Delphi-AHP method for 30 top-level AI experts in South Korea. The results of analysis show that AI application is urgent and necessary in the fields of medical/healthcare, public and safety, and manufacturing, which seems to reflect the peak of the COVID-19 crisis in the second half of 2020 at the time of the investigation. And it turns out that policies related to AI talent cultivation, data, and R&D investment are important and urgent above all in order for organizations to apply AI. This suggests that strategies are required to focus limited national resources on these industries and policies first.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.5
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• pp.153-159
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• 2018

In recent years, the development of weapons systems in the field of defense research and development has become increasingly large, complex, and long-term, and so have budgets and the time spans involved. In order to improve this, the Weapon Systems Requirement Verification Committee, which benchmarked the preliminary feasibility of the private sector, was established to verify the appropriateness of requirements, and the necessity and priority of the projects. This research proposes a methodology for analyzing and prioritizing proposed weapons systems for effective and strategic allocation of defense budget funding. First, the evaluation factors that can be used in the defense sector were assessed by analyzing the related fields. We set the weighting of items by using the analytical hierarchy process for technical risk assessment and technical profitability evaluation. After that, we applied the methodology to 32 weapons systems and analyzed the results. In conclusion, through this study, it was possible to analyze profitability dimensions overlooked in the existing methodology.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2012.10a
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• pp.450-453
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• 2012

We must be the best choice in a variety of situations in decision every time. If you need to select one of several alternatives in a variety of fields, In this paper, we implement the system using AHP to analyze the results with the highest priority. AHP is one of the decision-making techniques. When Decision-makers making decisions, AHP would be useful if you need to select the alternative conflicting purpose. Excel using AHP software, or software for the PC exist. Recently, Smartphone and tablet PC is the modern man's necessities and has shown remarkable penetration. In this paper, we have developed a priority investigation Mobile Application.

• Journal of Information Management
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• v.36 no.2
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• pp.1-24
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• 2005

This study is aimed at investigating if there were the differences on citing behavior of researchers among different fields of engineering, in terms of five items, such as types of resources cited, the average number of documents cited, the demand of current documents, languages used in cited documents, and the life decrease phenomena of information. 29,160 cited references in 2,333 articles from 4 major selected journals, published in the year of 1999, 2001, and 2003 were analyzed. The result of this study shows that there were the differences on citing behavior of researchers among different fields of engineering on all 5 items. And also, some suggestions were given the priority of library collection and shelf arrangement for the library.

• International Journal of Advanced Culture Technology
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• v.9 no.4
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• pp.40-51
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• 2021

This study was conducted with the aim of constructing a unified model according to the structure of qualification types of lifelong education professionals for the disabled. The research method consisted of procedures in which literature analysis and expert meetings were constructed in connection with each other. The contents of the study were suggested from the classification of qualification types into professional teacher type and coordinator type by focusing on special education and rehabilitation, which are related convergence fields that affect the qualification training of lifelong education professionals for the disabled. The two convergence fields, such as special education and rehabilitation welfare, lead to a separate application base from the perspective of education and welfare for the qualification of lifelong education professionals for the disabled, and finally confusion and conflict in the nature and contents of the curriculum and related services. A dichotomy structure system in which this phenomenon results in a divided type of qualification training for lifelong education professionals with disabilities was composed of several samples. In this regard, the curriculum and related services that can build convergence fields related to lifelong education for the disabled were reflected in the context of priority through the criteria that should be emphasized from the standpoint of the disabled in the overall category of establishing lifelong education support system for the disabled. In addition, by forming four qualification criteria centering on this, the common convergence field was composed of special education, thereby enhancing the aspect of inclusion in the rehabilitation welfare field and specific convergence into lifelong education for the disabled. As a result, the two qualification types were unified.

• Journal of Engineering Education Research
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• v.18 no.5
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• pp.22-31
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• 2015

The purpose of this study is to suggest the general education contents for undergraduate students at engineering related departments through need analysis in order to develop creative and integral talents. For this study, the need analysis was conducted by using focus group interviews, Borich's educational need equation and the Locus for Focus Model, and highly ranked priorities on both methods proposed as the highest priorities. As a result, 'drawing up a letter of self-introduction and a portfolio', 'understanding fields', 'understanding careers related to the major', 'presentation skills', 'knowledge for certificated exams', 'method to deduct creative ideas' were high on the list of top five priorities. The selected items by Locus for Focus Model show that undergraduate students at engineering related departments need general education contents associated with career development and communication by priority.

• Proceedings of the IEEK Conference
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• 2004.06a
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• pp.171-174
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• 2004

Packet classification is an essential architectural component in implementing the quality-of-service (QoS) in today's Internet which provides a best-effort service to ail of its applications. Multiple header fields of incoming packets are compared against a set of rules in packet classification, the highest priority rule among matched rules is selected, and the packet is treated according to the action of the rule. In this Paper, we proposed a new packet classification scheme based on parallel multiple hashing on tuple spaces. Simulation results using real classifiers show that the proposed scheme provides very good performance on the required number of memory accesses and the memory size compared with previous works.