• 국제학술발표논문집
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• The 6th International Conference on Construction Engineering and Project Management
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• pp.321-323
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• 2015

Monitoring crane motion in real time is the first step to identifying and mitigating crane-related hazards on construction sites. However, no accurate and reliable crane motion capturing technique is available to serve this purpose. The objective of this research is to explore a method for real-time crane motion capturing and investigate an approach for assisting hazard detection. To achieve this goal, this research employed various techniques including: 1) a sensor-based method that accurately, reliably, and comprehensively captures crane motions in real-time; 2) computationally efficient algorithms for fusing and processing sensing data (e.g., distance, angle, acceleration) from different types of sensors; 3) an approach that integrates crane motion data with known as-is environment data to detect hazards associated with lifting tasks; and 4) a strategy that effectively presents crane operator with crane motion information and warn them with potential hazards. A prototype system was developed and tested on a real crane in a field environment. The results show that the system is able to continuously and accurately monitor crane motion in real-time.

• 경영정보학연구
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• 제4권1호
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• pp.33-45
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• 2002

최근 정보기술의 발달로 저비용의 대화 채널 구축이 용이해짐에 따라 최종소비자와 기업간의 정보 교환 및 공유가 활발해지고 단속적거래 보다는 지속적인 거래를 통한 관계적 결속이 늘어 가고 있다. 지속적 교환관계에서는 거래정보와 비거래 정보의 흐름이 발생하는데, 정보기술을 이용하여 고객의 정보, 고객을 위한 정보, 고객에 의한 정보등을 관리함으로써 관계관리에 있어 핵심적 역량을 창출할 수 있다. 본 연구에서는 소비자와 기업간의 관계적 결속 생성에 대한 이론적 배경을 토대로 정보 흐름의 관점에서 동적인 관계관리의 개념적 틀을 제시하였다. 또한 이를 지원하기 위한 고객 정보시스템 아키텍처를 설계하고 국내 기업사례에 실제로 적용해 보았다.

• ETRI Journal
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• 제34권3호
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• pp.308-318
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• 2012

As mobile markets in most developed countries are rapidly coming close to saturation, it is increasingly challenging to cover the cost of providing the network, as revenues are not growing. This has driven mobile operators, thus far mostly involved in facility-based competition, to turn their attention to network sharing. There exist various types of mobile network sharing (MNS), from passive to active sharing. In this paper, we propose a model, based on the supply-demand model, for evaluating the economic effects of using six types of MNS. Our study measures the economic effects of employing these six types of MNS, using actual WiBro-related data. Considering lower service price and expenditure reduction, the total economic effect from a year's worth of MNS use is estimated to be between 513 million and 689 million USD, which is equal to three to four percent of the annual revenue of Korean mobile operators. The results of this study will be used to support the establishment of a MNS policy in Korea. In addition, the results can be used as a basic model for developing various network sharing models.

• 산업경영시스템학회지
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• 제46권spc호
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• pp.39-53
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• 2023

Recently, the market competition has been fiercer due to the acceleration of technological change and the launch of intelligent products. In this situation, technology cooperation activities through networks rather than independent technological innovation activities of a single company or institution are recognized as a crucial strategy to gain competitiveness. Technology cooperation can take various forms depending on the target technology, and researchers have conducted performance analyses of technology cooperation types. However, there have not been data-based quantitative studies on the types and trends of technology cooperation for the target technology. In this paper, we explored the difference between the technology cooperation types by technology and time using the formal concept analysis method and co-patent information. In particular, the proposed methodology has been verified through the case study of electric vehicles, and it is intended to suggest the direction of technological cooperation according to specific technologies and cooperation targets in the future

• Strategy21
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• 통권37호
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• pp.65-103
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• 2015

This study is an attempt to look into the future role of the ROKN and to provide a strategic way forward with a special focus on naval strategic concept and force planning. To accomplish this goal, this research takes four sequential steps for analysis: 1) assessing the role and utility of naval power of ROKN since its foundation back in 1945; 2) forecasting features of various maritime threats to influence the security of Korea in the future directly or indirectly; 3) identifying the roles to be undertaken by future ROKN; and 4) recommending Korean way of naval force planning and the operational concept of naval power. This study seeks to show that ROKN needs comprehensive role to better serve the nation with respect to national security, national prosperity and development, and future battle-space management. To safeguard the national security of Korea, it suggests three roles: 1) national guard for the peaceful unification; 2) protector of the maritime sovereignty; and 3) suppressor to maritime threats. Three more roles are highlighted for national prosperity: 1) escort of the national economy; 2) guardian for national maritime activities; and 3) contributor to the world peace. These roles need to be closely connected with the role for the battle-space management. This paper addresses the need for a dramatic shift of the central operational domain from land to maritime in the future. This will eventually offer future ROKN a leading role for developing strategic concept and force planning rather than merely a supporting one. This study finally suggests 'balanced' strategy both in concept development and force planning. A balanced force planning is a 'must' rather than an 'option' when considering a division of function between Task Fleets and Area Fleets, constructing cutting-edge conventional forces such as Aegis destroyer, CVs, or submarines, and the mix of high-profile platform and low-profile when composing future fleets. A 'balance' is also needed in operational concept. The fleet should be prepared to fulfill its missions based on two different types of force operation i.e., coercive or cooperative application of the utility of naval force. The findings and recommendations of the study are relevant today, and will be increasingly important in the future to achieve various political goals required by enhancing the utility of naval power.

• 지식경영연구
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• 제15권3호
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• pp.1-12
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• 2014

It is tried to draw the failure traits of leadership by extracting leadership parts from previous failure studies and including some parts which mention failure leadership among leadership-related books. All of 5 patterns are drawn through total 13 types of study data. From 'insensitive to change' and authoritarianism which is mentioned 8 times in such 13 studies, to 'interpersonal problem', which is mentioned five times, traits which are mentioned at least five times are selected. There are drawn 5 traits including ${\Delta}$ authoritarianism ${\Delta}insensitive$ to change ${\Delta}lack$ of executive ability ${\Delta}populism$ and ${\Delta}interpersonal$ problem. As being examined in these 5 types of failure traits, the failure of leadership is ultimately happened because of communication heading for the inside without any communication(exchange) to the outside. That is, it is understood that authoritarian leaders don't perceive change correctly but make a wrong communication (populism) or break down communication. Additionally, the executive ability is to perform actually one's idea and to be achieved through incessant communication with members. Compared with other various studies to draw failure factors, these leadership traits have something in common. In the previous researches conducted the study of general failure factors, ${\Delta}adherence$ to preexisting business and resistance to change ${\Delta}unfeasible$ expansion strategy ${\Delta}blind$ faith in successful technology and innovation and ${\Delta}insufficiency$ to grasp competitor(consumer) are pointed out as the failure factors. It is deemed that these are happened because organizational management is headed for the inside without any communication (exchange) to the external environments. Matters unfolded through this paper until now are an attempt to apply the failure knowledge to a leadership part which is an individual field in business administration. It is considered that this study will be complemented through additional case study or quantitative analysis in the future.

• Spatial Information Research
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• 제2권1호
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• pp.27-38
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• 1994

급속한 도시화와 더불어 도시화의 기반이 되는 막대한 사회기반시설물이 필요하게 되었다. 현재 시설물 관리기관별로 관리되고 있는 전화, 전기, 가스, 상하수도 등과 같은 사회기반시설물이 전체적인 입장에서 조정될 수 있다면 응급상황발생시 효율적으로 대처할 수 있을 뿐만 아니라 이들 시설물의 유지관리시 발생되는 공사비 중복 및 주민의 불편을 상당부분 해소할 수 있게 될 것이다. 따라서 본 논문에서는 우리나라의 사회기반시설물을 관리하고 있는 기관의 시설물 관리업무를 조사하여 GIS구축시 기초자료가 되는 기관별 업무수행시 조사항목을 체계적으로 정리하였으며, 기관별로 활용하고 있는 도면 및 장부를 함께 조사분석하여 시설물 관리에 필요한 수치코드 표준화방안, 기본도에 포함되어야할 사항, 기본도의 축척, 기본도 관리기관 및 기본도 운영방법 등을 제시하였다.

• Asia pacific journal of information systems
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• 제7권1호
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• pp.85-97
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• 1997

This paper is concerned with knowledge representation schemes best suited for human resource management (HRM) problem domains including human resource planing, selection, placement, compensations, performance evaluation, training and labor-management relations. In order to suggest the scheme we consider two research gods. First, we evaluate and prioritize. The knowledge representation techniques of frames rules, semantic nets and predicate logic that hove been recommended to managerial domains. The combined Analytic Hierarchy Process technique is employed to combine individual judgments effectively between two different expert groups. As a result if we are to select a single knowledge representation technique, a frame representation is best for most HRM domains and to combine frames with others is another choice. Second as a strategy for knowledge representation schemes we show some examples for each damn in terms of labeled semantic nets and two types of rules derived from the semantic nets. We propose nine knowledge components as ontologies. The labeled semantic nets con provide some benefits compared with conventional one. More clearly definea node rode information maces it easy to find the ac information. In the rule sets, the variables are the node of the semantic nets. The consistency of rules is validated by the relationship of the knowledge components.

• Journal of Construction Engineering and Project Management
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• 제3권1호
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• pp.28-34
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• 2013

Use of recycled aggregates in portland cement concrete (PCC) construction can offer benefits associated with both economy and sustainability. Testing performed to date indicates that recycled brick masonry aggregate (RBMA) can be used as a 100% replacement for conventional coarse aggregate in concrete that exhibits acceptable mechanical properties for use in structural and pavement elements, including satisfactory performance in some durability tests. Recycled brick masonry aggregate concrete (RBMAC) is currently not used in any type of construction in the United States. However, use of RBMAC could become a viable construction strategy as sustainable building practices become the norm. This paper explores the feasibility of use of RBMAC in several types of sustainable construction initiatives, based upon the findings of previous work with RBMAC that incorporates RBMA produced from construction and demolition waste from a case study site. A summary of material properties of RBMAC that will be useful to construction professionals are presented, along with a discussion of advantages and impediments to use. Several quality assurance and quality control techniques that could be incorporated into specifications are identified.

• 한국안광학회지
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• 제20권4호
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• pp.405-414
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• 2015

목적: 안경원 고객에 대한 군집분석을 통하여 고객의 세분시장 특성을 분석하고, 이를 안경원 마케팅 전략에 유용한 지표로 삼을 수 있도록 하고자 한다. 방법: 2015년 3월 10일부터 3월 31일 사이에 서울 및 경기북부지역의 안경원을 방문한 고객을 대상으로 설문조사를 실시하였으며, SPSS v.10.0 통계 패키지 프로그램을 활용하여 분석하였다. 분석방법은 빈도분석, 가치관 변수에 대한 요인분석, 시장세분화를 위한 군집분석, 교차분석을 실시하였다. 결과: 가치관에 근거하여 시장을 세분화하였다. 마케팅 전략을 수립할 때 "중도가치 지향 집단", "고도가치 지향 집단", "고도가치 지향 비종교 집단"의 3가지 군집으로 고객을 분류하여 전략을 수립하는 것이 좋은 것으로 나타났다. 누진굴절력렌즈의 마케팅 전략은 "중도가치 지향 집단"에서 자영업자를 중심으로 하는 전략이 가장 중요한 것으로 나타났다. 결론: 군집분석을 통하여 시장을 세분화한 결과 3가지 군집으로 분류되었으며, 누진굴절력렌즈의 가장 중요한 고객은 "중도가치 지향 집단"에서 41세 이상의 자영업자임을 알 수 있었다.