• 한국건설관리학회:학술대회논문집
• /
• 한국건설관리학회 2007년도 정기학술발표대회 논문집
• /
• pp.373-376
• /
• 2007

현재 건설 산업에서 나타나고 있는 숙련공 부족 현상, 기술자의 고령화 문제, 안전상의 문제 등을 해결하기 위한 대안으로 자동화 건설기계들의 개발 요구가 점점 높아지고 있다. 이러한 요구에 따라 본 연구에서는 효율적인 토공작업을 가능하도록 하고 안전성을 보장할 수 있는 안전관리시스템 개발의 선행연구로서 굴삭기 주변 장애물 탐지를 위한 개념 알고리즘을 개발하여 그 적용방안을 제안하고자 한다. 또한 이를 통해 자동화 굴삭기 개발에 있어 기반기술을 개발하고, 더욱 안전한 건설 환경 조성에 일조할 수 있을 것으로 사료된다.

• 한국의류학회지
• /
• 제35권11호
• /
• pp.1386-1398
• /
• 2011

Slow fashion can be viewed as an activism that provides an alternative solution to the problematic issues of fast fashion in a practical sense; however, (from a theoretical point of view) it is a fashion phenomenon arising from the criticism of an accelerating society. Slowness emphasizes the virtues of moderation. Slowness refers to the recovery of human ethics that have been neglected due to the goal-oriented nature of an accelerating society. Slowness can solve the problem of conformity and discrimination in society through pluralism and respect for local indigenousness. The characteristics of slow fashion can be defined by the aesthetic values of circularity, sustainability, moderation, expressivity and convergence. This includes the beauty of circularity (which views the relationships of all processes as organic), the beauty of sustainability (which ensures the maintenance of continuous emotions and the durability of products that can be promoted through slow processes), the beauty of moderation (which places importance on spiritual values and the moderate use of materials), and the beauty of expressivity (which plays the role of a social messenger that facilitates social assertion). These combined values present the beauty of convergence such as the harmony of local communities and the world in a blend of the old and the new with an exchange between producers and consumers.

• Advances in aircraft and spacecraft science
• /
• 제5권3호
• /
• pp.319-334
• /
• 2018

In this study, the failure mode and energy absorption capabilities of a composite shock absorber device, during an emergency landing are evaluated. The prototype has been installed and tested in laboratory simulating an emergency landing test condition. The crash absorber presents an innovative configuration able to reduce the loads transmitted to a helicopter fuselage during an emergency landing. It consists of a composite tailored tube installed on the landing gear strut. During an emergency landing this crash absorber system should be able to absorb energy through a pre-designed deformation. This solution, compared to an oleo-pneumatic shock absorber, avoids sealing checks, very high values of the shock absorber pressure, and results to be lighter, easy in maintenance, inspect and use. The activities reported in this paper have become an attractive research field both from the scientific viewpoint and the prospect of industrial applications, because they offer benefits in terms of energy absorbing, weight savings, increasing the safety levels, and finally reducing the costs in a global sense.

• Tribology and Lubricants
• /
• 제35권5호
• /
• pp.317-322
• /
• 2019

In spite of progress in tribological research, machine component failure due to friction and wear has been reported frequently. This failure may lead to secondary damage that can cause huge expense for maintenance and repair. To prevent economic loss, it is important to detect and predict the initial failure point. In this sense, various researchers have been tried to develop Condition Monitoring (CM) method using Acoustic Emission (AE) generated while the materials undergo failure. In this study, effect of particles on friction and wear was investigated using the pin-on-plate friction test and AE signal was recorded with a band-width type AE sensor. The experiments were performed in dry and lubricant conditions using steel and glass as specimens. After the experiment, 3D laser microscope image was captured to evaluate the wear behavior quantitatively. The AE signal was analyzed in time-domain and frequency-domain. The amplitude was compared with the frictional results. The results of this study showed that particle generation accelerate wear, generate high magnitude AE signal and change the frequency characteristics of the signal. Also, lubricant condition test results showed low coefficient of friction, low wear rate, and low magnitude of AE signal compared to the dry condition. It is expected that the results of this study will aid in better assessment of wear in CM technology

• 한국철도학회:학술대회논문집
• /
• 한국철도학회 2008년도 추계학술대회 논문집
• /
• pp.1264-1269
• /
• 2008

We designed a track circuit of Tag in-tag out type that can be used for light rails and monorails. This method is called RFID-Tag and it literally uses RFID-Tag and replaces a fixed track circuit and implements a moving block. The distance between RFID-Tags is set to the length of a train and thus a train is always in contact with one of the tags. A train runs in RFID-Tag in -RFID-Tag out type at all times and the distance between trains can be precisely controlled through the application of a moving block combined with the basic principle of a fixed block, which enables the continuous speed control and enhances the satisfaction of passengers. When constructing a track circuit using RFID-Tag the Tag in-tag out brings us the cost reduction and is more economical than the existing fixed track circuit in that sense and easy for installation and maintenance. The wireless communication between onboard and wayside makes the continuous control possible and can improve the control capacity of ATP/ATO by the implementation of a moving block on top of a fixed one.

• 산업경영시스템학회지
• /
• 제42권3호
• /
• pp.157-166
• /
• 2019

The study had subject to find out what factors Korean automobile consumer is considering in their decision to purchase cars in the situation of the growing competition in the domestic automobile market. In order to this end, the previous study was reviewed to select various factors considered in the process of buying cars. Based on this, Analytic Hierarchy Process was used to prioritize which factors were considered more important by consumers. In the result of study, we could find that performance had the highest priority, and the second ranking was the price. In contrast, image of brand and convenience of maintenance were shown to be relatively low in importance, ranking $3^{rd}$ and $4^{th}$, respectively. Beside, we could recognized the ranking of other detailed factors. This study has an academic implication in that it is able to grasp the latest tendency of consumers' purchase choice of car and to make conclusion by applying AHP analysis method to study of related subject. It also have practical significance that can be a basis for make sense what factors should be taken by the automobile industry to uprise the purchase of the consumers through the identification and preparation of the purchase selection criteria of domestic automobile buyers.

• Structural Monitoring and Maintenance
• /
• 제6권2호
• /
• pp.161-171
• /
• 2019

There have been a few checking frameworks intended to ensure and improve the nature of their regular habitat. The greater part of these frameworks are constrained in their capacities. In this paper, the insightful checking framework intended for debacle help and administrations has been exhibited. The ideal administrations, necessities and coming about plan proposition have been indicated. This has prompted a framework that depends fundamentally on ecological examination so as to offer consideration and security administrations to give the self-governance of indigenous habitats. In this sense, ecological acknowledgment is considered, where, in light of past work, novel commitments have been made to help include based and PC vision situations. This epic PC vision procedure utilized as notice framework for avalanche identification depends on changes in the normal landscape. The multi-criteria basic leadership strategy is used to incorporate slope data and the level of variety of the highlights. The reproduction consequences of highlight point discovery are shown in highlight guide coordinating toward discover steady and coordinating component focuses and effectively identified utilizing these two systems, by examining the variety in the distinguished highlights and the element coordinating.

• Journal of Sport and Applied Science
• /
• 제5권2호
• /
• pp.17-21
• /
• 2021

Purpose: This study aims to analyze the management environment Provincial and Municipal Professional Soccer Teams based on financial statements at a time when strengthening the financial soundness of domestic professional soccer teams is emphasized. Research design, data, and methodology: This study was sampled using convenience sampling and a total of 607 questionnaires were used. In this study, questionnaires were used as a survey tool, consisting of eight questions in a total of four areas, measuring demographic characteristics, shoe design, shoe functionality, shoe price, and promotion. Results: First, the importance of outdoor brand shoe selection attributes was high in cost-effectiveness, discount, and promotional models, while the satisfaction level was high in shoe size, content, and Model. Second, IPA analysis revealed shoe sizes, promotional models, and discount factors as maintenance and management continuation areas. Content factors have emerged as a competency-focused area. A sense of cushioning and wearing has emerged as an area of further improvement. As a status quo area, shoe laces and cost-effectiveness factors appeared. Conclusions: First, consumers considered the cost-effectiveness of choosing shoes, followed by discounts, and efforts are needed to diversify promotional content to maximize promotion for shoe sales. 3. Domestic outdoor brands are not yet satisfied with consumers.

• 한국보건간호학회지
• /
• 제35권3호
• /
• pp.415-429
• /
• 2021

Purpose: The purpose of this study was to explore the health-related factors of the elderly in rural village in-depth and comprehensively based on the socio-ecological model. Methods: The data were collected from 22 elderly people through four focus group interviews and analyzed by deductive content analysis using four themes of the socio-ecological model (SEM) as an analysis matrix. Results: A total of 10 categories corresponding to the four themes of SEM were derived as follows: Intrapersonal level, "Awareness of Aging and Health", "Inefficient practice of health behavior", and "Daunted self-efficacy", Interpersonal level, "Social relations maintenance", and "Changing sense of community", Community level, "Local resources requiring improvement", "Problems caused by regional characteristics", "Disadvantaged group", and "Leadership and residents participation", Public policy level, "Health-related facilities and programs". Conclusion: We proposed the development and application of intervention programs that combined individual activities to improve self-management capacity and group activities to enhance social support and solidarity for rural villagers.

• 대한방사선치료학회지
• /
• 제25권1호
• /
• pp.33-40
• /
• 2013

목 적: 호흡동조방사선치료 시 호흡에 따른 종양의 위치를 정확하게 파악하여 치료하기 위해서는 안정되고 일정한 호흡유지가 중요하다. 이에 본 연구에서 Real time monitor와 Ventilator를 이용하여 측정한 호흡유지방법을 소개하고 그 유용성을 평가하고자 한다. 대상 및 방법: 7명의 실험자를 대상으로 하여 Gate on time (Beam on time) 600초를 기준으로 실험자를 총 5개의 그룹 -자연 호흡, Monitor를 이용하여 유도한 호흡, Ventilator를 이용하여 유도한 호흡, Monitor와 Ventilator를 동시에 이용하여 유도한 호흡, 실험자 스스로 Real time monitor를 이용하여 주기적 Breath-hold 상태를 유지하는 호흡- 으로 분류 하였다. 분류 후 ANZAI 4D system을 이용하여 각각의 호흡신호를 획득 하였다. 호흡신호별 총 소요 시간을 비교하고 호흡주기 상의 Gate on/off time 평균값, 표준편차, 분산, 평균 호흡 주기의 횟수와 변화 등을 각각 분석하여 호흡의 안정성을 평가 하였다. 동시에 실험자들을 대상으로 설문조사를 실시하여 각 장치들의 의존성을 정성적으로 조사하였다. 결 과: 5개 그룹의 호흡신호 편차변화를 비교하여 실험자의 각 호흡신호 안정성을 평가하였다. 그 결과 모든 실험자는 Gate on time 600초 동안 소요되는 시간이 Monitor와 Ventilator를 동시에 사용 했을 경우에 실험시간이 가장 짧게 걸렸고, 가장 안정된 호흡을 유지한 것으로 나타났다. 결 론: 본 연구에서 Real time monitor와 Ventilator를 사용하여 호흡유도를 진행해본 결과 실험대상자들의 안정적인 호흡유지에 유용성이 있는 것으로 나타났다. 2개의 장비를 독립적으로 사용하였을 경우 보다 동시에 사용할 경우 호흡유지 안정도가 더 우수한 것으로 나타났다. Real time monitor와 Ventilator를 이용하여 환자의 호흡조건을 설정하여 환자에게 적용시킨다면 호흡조절방사선치료 시 치료의 정확도를 높일 수 있으리라 예상되며 동시에 치료시간도 단축될 것으로 사료된다. 특히 규칙적인 호흡조절이 가능한 환자의 경우 Real time monitor를 활용한 Breath-hold 방법의 활용은 치료시간 단축의 효과를 현저히 높일 수 있을 것이라 사료된다.