• 한국전자통신학회논문지
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• 제3권2호
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• pp.71-78
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• 2008

USN이 적용되는 분야가 확장되고, 연구가 활발히 이루어짐에 따라, 다수개의 USN이 상호 혼재하는 단계를 거쳐, 하나의 USN을 통해 다수의 응용서비스가 제공되는 단계로 진화될 것으로 전망된다. 따라서 하나의 USN에서 전달하는 데이터 패턴은 드문 데이터 리포팅, 연속적인 정보 모니터링, 이벤트 드리븐 데이터, 쿼리를 기반으로 하는 데이터 등의 여러 패턴이 혼재하게 될 것이다. 이러한 데이터 패턴들은 각 각이 요구하는 지연, 에러 비율, 전송률 등의 QoS 특성이 다르게 된다. 따라서 본 논문에서는 이런 환경에서 적합한 QoS를 보장해 줄 수 있는 MAC 프로토콜을 제안하였다. 제안된 알고리즘은 여러 응용에 맞춰 서비스를 제공하기 때문에 불필요한 에너지의 소비를 줄일 수 있다.

• 정보처리학회논문지A
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• 제17A권4호
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• pp.181-188
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• 2010

본 연구에서는 데이터마이닝 기법을 이용하여 네트워크 사용자의 행동 패턴을 분석하는 시스템을 제안하고자 한다. 시스템 구현을 위해 네트워크 탭 장비를 사내 네트워크에 설치하여 패킷을 복제한다. 복제된 패킷은 고속의 메인 메모리DB를 통하여 데이터베이스에 저장된다. 저장 된 데이터는 데이터 마이닝 기법을 이용하여 행동패턴을 분석하고 네트워크 관리자에게 실시간 보고한다. 또한 이기종간의 데이터를 공유하기 위해 표준의 XML 문서 교환 방식을 적용한다. 행동패턴 분석 시스템은 추후 저가 구현 및 쉬운 설치를 고려하여 임베디드형 셋톱박스 기반을 제안한다.

• 지식경영연구
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• 제9권3호
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• pp.59-76
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• 2008

Due to rapid increase in number of Internet users, the volume of domestic Internet shopping is expanding dramatically. Although the Internet shopping mall business is steadily growing, it has structural weakness, and in general, the business does not generate profit. In this context, this research identifies characteristics of the Internet shopping non-adopters, and suggests strategies to strengthen competitiveness of domestic Internet shopping malls and to create a new demand. Analysis of MCR data in 2007 showed that out of 4,298 respondents, 2,206 people adopted Internet shopping (51.3%). and 2,092 did not (48.7%). The survey measured 28 items regarding a consumption pattern and a lifestyle of the Internet users, and the analysis result showed that the pattern can be categorized in seven groups. Based on the analysis, the research suggests that the domestic Internet shopping malls adopt strategies to increase consumers' access frequency to tile Internet service, provide high-end goods, diversify transaction methods, make online shopping more convenient, cater to diversified consumer demands based on demographic data, provide price comparison more Internet shopping mails, and provide sufficient and useful information to consumers.

• 한국의류학회지
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• 제29권8호
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• pp.1068-1078
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• 2005

The purpose of this study was to analyze the production process of 12 domestic companies that manufacture women's knitwear and the degree of satisfaction of the middle-anged women who purchase knitted Jacket. Three hundred questionnaires were distributed and a total of 276 usable data were coded for further statistical analysis including descriptive statistics (frequency and one way- ANOVA test) by using SPSSWIN 10.1. It was found that the price satisfaction of knitted jacket was low because of imported yarn and production methods(i .e., 1inking, sewing, etc.). Therefore, it is necessary to develop that domestic yam and improve production methods. Another finding ot the study demonstrated that the size of knitted jacket was a little tight for the middle-aged women on the circumstance size(i.e., bust, waist, etc.) while majority of the respondents felt that the areas such as sleeve and shoulder seemed a little bit longer than their size. It should be designed in such that the physical characteristics of knitted materials are considered when pattern is made. Clothing companies should make an effort to effort more information about the knitted jacket and develop pattern suitable for the body shape of the middle-aged women.

• 한국소음진동공학회논문집
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• 제14권9호
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• pp.891-896
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• 2004

'Coil' occupies very much important position in delivering driving force of optical pick-up actuators. Up to now the main stream has been a winding coil type actuator, but actuators using FP-Coil(fine pattern coil) have been considered for the more compacted and simple manufacturing process and have variously spreaded the application fields by product. We have tried to design actuators using PCB-Coil(printed circuit board coil) which has benefits in terms of price and manufacturing process. Especially this research has two main things to reduce the vibration of sub-resonance and to assure the DC sensitivity among the performances of asymmetric optical pick-up actuator with PCB-Coil.

• 패션비즈니스
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• 제27권2호
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• pp.108-123
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• 2023

Recent increase of eco-conscious trends and pleasure from Do It Yourself (DIY) activities have led to a surge in sales of package products bundling together clothing patterns and raw materials. However, a well-structured market system is yet to be established. We surveyed 460 women with sewing as a hobby who had purchased these DIY clothing pattern packages. The survey revealed that majority of respondents had their hobby for over five years. Choosing the right fabric to match clothing patterns presented a common challenge. Most participants owned a sewing machine and an overlocker, with price being the primary concern when purchasing a package. For guidance during the sewing process, participants preferred print materials featuring real-life images. Those with less sewing experience leaned towards video tutorials. Items of interest or those commonly created included blouses, shirts, and dresses. Desire for further learning in sewing and pattern-making was prominent, with a clear preference for online classes. Several strategies are recommended to enhance the appeal of DIY clothing package products, including broadening range of packages that incorporate fabric, offering supplementary educational resources to improve users' skills, implementing affordable pricing structures, supplying comprehensive creation guidelines, and making available design modification guides. These considerations could significantly boost customer satisfaction. This research intends to lay groundwork for understanding DIY clothing creation market, ultimately fostering production of highly desirable products. Insights of this study will prove instrumental in refining product development and devising effective marketing tactics, leading to a more rewarding consumer experience.

• 지능정보연구
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• 제19권3호
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• pp.45-55
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• 2013

최근 모바일 디바이스와 휴대기기의 발달로 원격접속이 늘어남에 따라 보안의 중요성도 점차 증가되었다. 그러나 기존 패스워드나 패턴과 같은 보안 프로그램은 지나치게 단순할 뿐 아니라 다른 사용자가 쉽게 취득하여 악용할 수 있다는 단점이 있다. 생체인식을 활용한 보안 시스템은 보안성이 강화 되었지만 위조 및 변조가 가능하기 때문에 완전한 해결책을 제시하지 못한다. 본 논문에서는 이러한 문제점을 해결하기 위해 지문인식과 패스워드를 결합하여 보안성을 향상시킬 수 있는 방안을 연구하였다. 제안한 시스템은 하나의 지문이 아니라 다수의 지문을 이용하는 방법으로, 사용자가 패스워드를 입력할 때 여러 지문 중에서 정확한 지문의 순서를 제공하도록 한다. 오늘날 스마트폰은 패스워드나 패턴, 지문을 이용할 수 있지만 패스워드의 강도가 낮거나 패턴이 쉽게 노출되는 등의 문제가 있다. 반면에 제안한 시스템은 다양한 지문의 이용과 패스워드의 연계, 또는 다른 생체인식 시스템과 연결함으로써 매우 강력한 보안장치가 될 수 있다.

• 한국농공학회지
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• 제17권3호
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• pp.3878-3884
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• 1975

This study was carried out to develop the throw-in type thresher with its size as small as possible. Developing the smallest possible size of the throw-in type thresher has been very important to increase mobility and to reduce the machine price. The thresher that developed for this purpose was tested as to threshing and separation performance for the samples collected in eight catch boxes under the concave while threshing. The amount of grain collected in each compartments was measured and the threshing and separating pattern along the total span of the threshing drum was determined. The performance of separating and threshing units of the test thresher and threshing loss was evaluated by use of the developed grain separating apparatus and the method for measuring the grain separating performance of threshers. The results are summarized as follows; 1. The unthreshed grain (drum losses) and semi-threshed grain did not appeared at all throughout the treatments. 2. When threshed by making use of the developed throw-in type thresher, the threshing grain loss at about 25 per cent grain moisture was about one-half when threshed at about 18 per cent grain moisture. 3. And its grain separating loss in higher feed rate was decreased in comparison with that of lower feed rate. These results suggests that the throw-in type thresher may be suitable for wet threshing and for higher feed rate of threshing. 4. Above 60 per cent of total grain passing through concave fell through the screen within a scant 30 cm from the feeding inlet. This threshing pattern may suggest that major threshing action may be finished before about one third of cylinder length. The required separating load extended over the whole drum span is so defferent that separating elements should be redesigned so as to accomodate this variable pattern of separation load. 5. It was apparent from the experiment that the length of the threshing drum of the throw-in type thresher could be reduced from 1285mm to about 1050mm without increasing grain separation loss greatly.

• 대한영양사협회학술지
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• 제13권2호
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• pp.194-206
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• 2007

The purpose of this study was to identify dietitians' perception and purchasing pattern of fruits in elementary school lunch program. This study was conducted using mail survey from September 15 to October 30, 2006. Survey questionnaire was developed based on in-depth interview with three school food service dietitians. A total of 100 school food service dietitians in Seoul were participated. Based on the frequency analysis results, over half of respondents(69%) provides fruits every week, and 23% of respondents provides them twice a week. Strawberry, watermelon, apple, and mandarin were identified as the most frequently served fruits in Spring, Summer, Fall, and Winter, respectively. Sixty two percent of respondents indicated they offered imported fruits, such as banana and pineapple, less than 10% of total fruits. Ninety three percent of respondents selected private contract when they purchase fruits, and forty four percent of dietitians decided fruits purchasing procedure by themselves. Respondents addressed "Apples and Pears were appropriate for a dessert." and "Apples and Pears supply nutrition such as calorie and vitamin." as the advantages of offering apples and pears in school lunch menu. They also indicated difficulty in preparation work and many leftovers as the disadvantages of offering apples and pears. When purchasing apples and pears, dietitians considered taste as the first criteria and price as the second. Respondents perceived that elementary school students preferred apples and pears in a neutral level. Respondents also had higher preference for an-sim apples which can be eaten without peeling for school lunch menu and higher intentions to provide in school lunch menu. The survey results also found that respondents' intention to offer apples in school lunch menu was higher than intentions to offer pears. The implications to increase the chance of fruits offering in school lunch menu were discussed.

• 대한공간정보학회지
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• 제17권3호
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• pp.41-48
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• 2009

본 연구는 성장과정에서 나타나고 있는 공간적 확산 집중의 특성과 도시공간구조 변화를 측정하는데 목적을 두고 있다. 분석에 사용된 자료는 도시인구, 고용, 개발연면적, 지가를 이용하였다. 분석시기는 1995년이후 10년간으로 1995년, 2000년, 2005년을 기준으로 하였다. 연구방법은 먼저 도시성장 변화를 측정하기 위하여 중심점 이동과 표준편차거리를 산출하였다. 모란지수(Moran's I)분석결과 분산된 형태보다는 전반적으로 집중된 형태를 보이고 있었으나, 그 수준은 다소 미약하게 나타났다. 앞으로 시가화지역에서는 토지이용 등의 계획적인 도시관리가 요구된다고 볼 수 있다. 다음으로 윤곽도로 볼 때, 대체적으로 단핵구조에서 다핵화로 변화된 모습을 보이고 있다. 다만 중심지간에 상호연계축 발달은 미약하였다.