• 농업과학연구
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• 제43권3호
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• pp.432-440
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• 2016

The consumption of pre-treated vegetables (including fresh-cut vegetables) that are washed, peeled, and trimmed has been significantly increased because of their easy use for cooking. Vegetable cutting machines have been widely utilized for producing fresh-cut vegetables or agricultural products of different sizes; however, the design standard is not established for specific types of agricultural products. Therefore, this study was conducted to determine mechanical properties (compressive and shear forces) of targeted agricultural products (radish, carrot, squash, cucumber, shiitake mushroom, and sweet potato) for developing a multipurpose vegetable cutting machine. According to ASAE standard (s368.3), compressive and shear forces of targeted agricultural products were measured by using a custom built UTM (universal testing machine). Shape type of samples and speed ranges (5 - 15 mm/min) of loading rate on bioyield and shear points varied depending on the targeted agricultural product. The range of averaged bioyield points of targeted agricultural products were between 7.89 and 146.98 N. On the other hand, their averaged shear points ranged from 22.50 to 53.47 N. Results clearly showed that the bioyield and shear points of targeted agricultural products were thoroughly affected by their components. As measuring compressive and shear forces of a variety of agricultural products, it will be feasible to calculate blade cutting force for designing multipurpose vegetable cutting machine.

• 수산해양교육연구
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• 제25권1호
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• pp.87-101
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• 2013

The purpose of this study was to analyze differences in psychological characteristics according to cell phone dependency and use purpose in cell phone users of adolescences. Psychological characteristics of adolescents were consisted of attention aggression, somatic symptoms, social withdrawal, depression variables. The subjects were 2,158 cell phone owned second graders of middle school. A data of the Korean Child-Youth Panel Survey(KCYPS) was employed for the this study. Dependency and use purpose of cell phone were classified by cluster analysis into four groups with similar characteristics : 'high dependency-multipurpose', 'low dependency-social', 'low dependency-unsocial' 'middle dependency-peer interaction' groups. Major findings were that: the group differences in psychological characteristics were statistically significant. The 'low dependency-social' group showed highest on adjustments, and the other groups were maladaptive. Finally, implications for future research were discussed.

• 한국농촌건축학회논문집
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• 제8권3호
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• pp.27-34
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• 2006

According to the results of analyzing the space composition by focusing on the impediment persons latrines among the public latrines, the conclusions of this study are as follows. In order to eliminate the rejection feeling which the word feeling of impediment persons' latrine communicates, its name should be changed into the impediment persons latrine. Thus, the impediment persons, the old and the weak, the pregnant women and the nursing mothers, who suffer the difficulty to use the general latrines, should use such impediment persons latrines jointly. By lowering the height from the ground to the latrine floor, the impediment persons, who use their wheel chairs, should gain the easy access to such impediment persons latrines. By equipping the doorway of public latrines and impediment persons latrines with the automatic door instead of the sliding door, the impediment persons should use such latrines conveniently. The locations and sizes of impediment persons latrines differ with one another. Therefore, it is necessary to unite constantly their location, scale, and facilities.

• 한국수자원학회논문집
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• 제30권6호
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• pp.709-720
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• 1997

다목적 댐의 홍수기 저수지 운영에 있어 댐 규정에 명시된 홍수조절용량이 부족하다고 판단되는 경우, 한정된 저수공간의 탄력적인 이용방안을 강구하여 추가적인 홍수조절용량을 확보하여야 한다. 본 연구에서는 홍수기의 기상특성을 반영하여 홍수기를 시기적으로 구분하고, 구분된 홍수기간별로 각각의 이수목적수위와 치수목적수위를 검토하였다. 검토된 결과를 바탕으로 서로 상반되는 이수와 치수를 함께 고려할 수 있는 방안을 강구하였으며, 이로부터 결정된 홍수기 댐 운영수위를 홍수기 가변제한수위라 정의하였다. 홍수기 가변제한수위를 결정하는 일련의 절차에 대해 대청 다목적 댐을 대상으로 적용하고 그 결과를 분석하였다.

• 한국안전학회지
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• 제27권4호
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• pp.128-133
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• 2012

This research has analyzed factors affecting customers' satisfaction when they use parking lots of big retailers so that, in case of constructing, operating or managing such retailers, proper measures can be come up with. The analysis has been implemented on the basis of survey, and influence factors including entry/exit lamp, parking cars' traffic flow, parking type, pedestrians' movement after parking and safety. Parking lot users' satisfaction has been analyzed by using the Structural Equation Modelling and, as a result of it, in case of a detached or single building, pedestrians' movement flow after parking contributed the most to the users' satisfaction, while, in case of multipurpose complex, parking cars' traffic flow has the most influential factor. It is interpreted that users of a single building put a bigger emphasis on entry to the shop and their way back to the parked area after their shopping while customers of multipurpose complex might have various purposes of visiting the place and there are relatively more cars so that they put more emphasis on traffic counterflow, other cars and pedestrians.

• 한국산학기술학회논문지
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• 제10권4호
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• pp.759-764
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• 2009

본 논문에서는 다목적 시각 언어 시스템을 이용한 원스텝 모바일 쇼핑 시스템을 설계하였다. 다목적 시각언어 시스템은 점자에 그 기반을 두고 있으며, 이를 정방형 색상표로 나열하여 시각화시킴으로써, 사용의 편리성과 기본적인 개인 정보의 암호화를 동시에 이룰 수 있으며, 주고받는 정보의 양이 극히 미비하여 보다 빠른 시간에 통신이 가능한 이점도 가지고 있다. 설계된 원스텝 쇼핑 시스템은 이러한 다목적 시각 언어와 국내 성인의 대부분이 보유하고 있는 핸드폰을 접목시켜 이를-쇼핑에 적응시킨 것이다. 사용자는 TV나 PC 모니터, 인쇄물 등에 나타난 코드를 핸드폰의 카메라로 촬영한 후, 내장시킨 프로그램을 이용하여 접속 버튼을 누름으로써 원하는 쇼핑을 한 번에 끝낼 수 있도록 설계된 본 시스템을 이용하면 보다 빠르고 편하며 안전하게 원하는 상품을 구매할 수 있을 것이다.

• 복식문화연구
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• 제15권1호
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• pp.68-80
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• 2007

Surrealism's method of expression and inspiration has been a continuous influence on fashion. What is important is how to identify and research a source of inspiration, and how to use this inspiration to guide the designs that can be worn on a real human body. Therefore, the purpose of this study was to show how to develop ideas and designs from Surrealist objects and how to contribute to the development of designs to the diversity in visual and functional effects along with the changes in consumer's interest. Documentary studies about Surrealism and Surrealist-inflected fashion applying the works of Surrealist and fashion images as a tool of historical research were proceeded. And the ideas for theme, the motifs for print patterns, and the concept of designs were borrowed from Surrealist objects touching on the imagery between the real and reflected, optical and artificial, and the designs were developed with several different visual and functional effects changing color, pattern, size, and length with the function of zippers in each item. It also gives the person wearing it amusement because it includes the concept of play and D.I.Y. With effective planning, it is possible to attract consumer's interest in the market.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2008년도 추계 학술발표회
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• pp.842-853
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• 2008

In the construction of dam, the key factor which decides the type of dam is security of materials resource. Because of the large scale earth work, the ability to supply the materials is essential part about economical efficiency. The research is the case study about controlling the plan to secure the material resources in the design of Buhang multipurpose dam. In case of Buhang multipurpose dam, at that time of basic design, it was planned to use a rock fill material. From the detail investigation about the river bed accumulative layer widely spread on the submerged district on the basic design, the research is accomplished to replace rock material with gravel material. After the investigation of whole reserves of gravel material, estimation of conformity as dam construction material from analysis of grain size distribution, the case study of oversea construction, and the material property comparison between rock fill material and gravel fill material, it is verified th possibility of using the gravel fill. Thereafter, the analysis of dam stability using a gravel fill material is accomplished. Finally, A gravel fill material can be used as the main construction material of CFRD, therefore the efficiency of resource recycling in the submerged area is maximized, and the established plan is more advantageous to stability, constructibility, environmentibility than the case of using a rock fill.

• 한국콘텐츠학회논문지
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• 제5권3호
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• pp.83-91
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• 2005

부인봉쇄 서명 기법에서 디지털 서명은 서명자의 동의하에서만 검증 및 부인이 가능하다. 회사 내에서 디지털 서명된 비밀문서가 경쟁 업체에 복제되어 전달되는 경우에, 해당 문서가 일반 서명기법으로 서명되면, 서명자의 동의 없이도 경쟁 업체에서 문서의 진위 여부를 검증할 수 있다. 서명자의 동의하에서만 비밀문서가 검증되기 원한다면, 부인봉쇄 서명 기법의 적용은 필수적이다. 전환 부인봉쇄 서명 기법은 일반 부인 봉쇄 서명 기능과 더불어 부인봉쇄 서명에서 일반 서명으로 필요에 따라서 전환할 수 있는 부가적인 특성을 제공한다. 더 이상 비밀 유지가 필요 없는 부인봉쇄 서명된 문서의 경우에 일반 서명으로 전환하여 공개할 수 있다. 본 연구에서는 El-Gamal 서명 기법에 기반 한 효율적인 다목적 전환 부인봉쇄 서명기법을 제안한다. 제안한 기법은 부인봉쇄 성질을 만족하며 부인봉쇄 서명을 일반 서명으로 전환할 수 있다. Boyar가 제안한 전환 부인봉쇄 서명 기법과 비교하여 공개키 및 서명 크기가 작으며, 서명 확인 프로토콜에서의 통신 단계 수를 줄였다.

• 한국해양공학회지
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• 제11권2호
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• pp.122-130
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• 1997

Coastal diaster induced by waves and countermeasures were investigated in the viewpoint of reduction of overtopping rate with enviroment in fishing port. The reduction method of wave overtopping rate using ecosystem control structures was proposed and studied on the efficiency by hydraulic and numerical experiments. The estimation models on wave overtopping rate was proposed after comparing previous models with dimensional analysis and experimental results. Control function o fwave overtopping by use of ecosystem controlstructures was simulated and discussed with combining wave shoaling-dissipation-breaking deformation model around ecosystem control structures and newly proposed calculation model for wave overtopping rate. Feasiblilty of ecosystem control structures could be confirmed for reduction of wave overtopping and fisheries-based multipurpose development of coastal zone.