• Journal of information and communication convergence engineering
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• 제9권6호
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• pp.683-688
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• 2011

The wireless sensor network (WSN) is well known for an enabling technology for the ubiquitous environment such as real-time surveillance system, habitat monitoring, home automation and healthcare applications. However, the WSN featuring wireless communication through air, a resource constraints device and irregular network topology, is threatened by malicious nodes such as eavesdropping, forgery, illegal modification or denial of services. For this reason, security in the WSN is key factor for utilizing the sensor network into the commercial way. There is a series of symmetric cryptography proposed by laboratory or industry for a long time. Among of them, recently proposed HUMMINGBIRD algorithm, motivated by the design of the well-known Enigma machine, is much more suitable to resource constrained devices, including smart card, sensor node and RFID tags in terms of computational complexity and block size. It also provides resistance to the most common attacks such as linear and differential cryptanalysis. In this paper, we implements ultra-lightweight cryptography, HUMMINGBIRD algorithm into the resource constrained device, sensor node as a perfectly customized design of sensor node.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2003년도 ICCAS
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• pp.603-608
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• 2003

Recently, personal robots and home robots are developing by many companies and research groups. It is considered that a general effective interface for user of those robots is speech or voice. In this paper, Japanese speech based man-machine interface system is discussed for reflecting the fuzziness of natural language on robots, by using fuzzy reasoning. The present system consists of the derivation part of action command and the modification part of the derived command. In particular, a unique problem of Japanese is solved by applying the morphological analyzer ChaSen. The proposed system is applied for the motion control of a robot manipulator. It is proved from the experimental results that the proposed system can easily modify the same voice command to the actual different levels of the command, according to the current state of the robot.

• 가정과삶의질연구
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• 제18권2호
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• pp.15-27
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• 2000

This study puts an emphasis on the importance clothing and its reuse, dealing with the unmarried women workers who will be main domestic consumers. Questionnaire survey method was used in this research. The sample was taken from 546 unmarried women workers. The major findings are summarized as follows, it was found that Factor I was the cause of unplanned clothing management, Factor II was the cause of clothing modification and body type changes and Factors III was the cause of fashionmongering. Second, it was shown that as for experiences in hoarded clothing recycling disposition behavior subjective social strate had the high level, the group of sale and technical jobs / self-employed jobs had the higher level than the group of specialized skil / management jobs, the group in office-going and leaving clothing had the higher level than the group of people in separate uniform as working dress and the group of those experienced in environmental education had the high level.

• 한국주거학회논문집
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• 제5권2호
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• pp.141-148
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• 1994

The behavioral-related environmental study for multifamily housing is needed to develop the quality of unit floor plan in terms of user comfort and needs. So, the aim of this study is to find out the living style and housing needs in terms of interaction between the users behavior pattern and orgarnization of physical home space. For the purpose, the field experiments in Pusan, have been carried out with 318 households living in apartments by plan types(2BL, 3BL, 4BL, 5BL) which were classified by number of bedrooms. The dwelling space usage behavior(room use pattern and furniture uasge pattern) and the space adjustment behavior(physical modification of space and preferred space adjustment attitude) were examined and analyzed.

• BMB Reports
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• 제28권1호
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• pp.12-16
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• 1995

The branched-chain ${\alpha}$-keto acid dehydrogenase (BCKAD) complex is a rate limiting enzyme which catalyzes the oxidative decarboxylation of branched-chain ${\alpha}$-keto acids. Numerous studies have suggested that BCKAD is subject to covalent modification in vitro via phosphorylation and dephosphorylation, which are catalyzed by a specific kinase and phosphatase, respectively. The biggest difficulty in the assay of BCKAD activity is to arrest the interconversion between the active and inactive forms. BCKAD activity was determined from fresh rat heart and liver tissues using homogenizing and assay buffers containing inhibitors of phosphatase and kinase. The results suggest that a radiochemical assay using ${\alpha}$-keto[1-$^{14}C$]-isovalerate as a substrate for the enzyme can be applied as a reliable method to determine in vitro enzyme activity with arrested interconversion between the active and inactive forms of the BCKAD complex.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2000년도 추계학술대회논문집
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• pp.643-648
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• 2000

The AFM is an imaging tool or a profiler with unprecedented 3-D resolution for various surface types. The AFM technology, however, leaves a lot of room for improvement due to its delicate and fragile probing mechanism. The distance between probe tip and sample surface must be maintained in below the nano meter level in order to measure the sample surface in Angstrom resolution. In this paper, the mode analysis of AFM system, modification based on the mode analysis are performed and finally the sample surface is measured by the home-built AFM.

• 한국노년학
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• 제40권3호
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• pp.543-563
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• 2020

사람들은 노화가 진행되고 신체기능이 저하될수록 집 안에서 머무는 시간이 길어지기 때문에 주택환경의 영향을 더 많이 받게 된다. 그동안 주택환경과 건강의 관련성에 관한 연구는 다수 진행되었으나, 신체기능이 저하된 노인의 장애 발생과 우울에 미치는 주택환경의 영향을 밝히는 연구는 부족하였다. 이에 본 연구는 보행기능제한과 장애, 그로 인한 장애와 우울의 관계에 영향을 미치는 주택환경의 조절 효과를 검증하는 것을 목적으로 한다. 본 연구는 2018년 서울시 노인실태조사 자료를 활용하였으며, 주요 변수에 결측치가 있는 응답자를 제외한 총 3,027명을 대상으로 분석을 수행하였다. 결과분석에는 로지스틱 회귀분석과 다중회귀분석을 사용하였다. 연구결과 첫째, 주택환경에 문제가 있다고 보고한 사람들은 그렇지 않은 사람들에 비해 보행기능제한(OR=1.487, 95% CI: 1.250 - 1.770), IADL장애(OR=1.594, 95% CI: 1.303 - 1.949)와 우울(OR=1.943, 95% CI: 1.553 - 2.430) 수준이 높게 나타났다. 둘째, 주택환경은 보행기능 제한이 도구적 일상생활수행능력(IADL) 장애에 미치는 영향을 조절하는 것으로 나타났다. 즉, 열악한 환경에 거주하며 보행기능제한을 경험하는 노인의 IADL장애 수준이 그렇지 않은 집단보다 높은 것을 알 수 있다. 셋째, 주택환경은 보행기능을 통제한 후에도, IADL장애가 우울에 미치는 영향을 조절하는 것으로 검증되었다. 이는 열악한 환경에 거주하는 IADL장애 노인의 우울 수준이 그렇지 않은 집단보다 높다는 것을 의미한다. 본 연구결과를 기반으로 노년기 장애와 우울을 예방하고, 자신의 집에 오래 머물러 살 수 있도록 지원하기 위한 개입전략으로서 노인의 신체적, 기능적 특성을 반영한 주택환경 개선사업의 필요성과 방향성을 제시하였다.

• 한국항행학회논문지
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• 제11권3호
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• pp.259-265
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• 2007

유비쿼터스 컴퓨팅을 구현하기 위한 임베디드 시스템적 요소, 즉 각종 전자기기, 가전제품, 제어장치 들은 단순히 회로로만 구성되어 있는 것이 아니라 특정한 기능을 수행하도록 프로그램이 내장되어 있는데 이러한 시스템 제어역할을 수행하는 다양한 프로그램을 임베디드 소프트웨어라고 정의할 수 있다. 임베디드 소프트웨어는 시스템의 기능을 제어하는 핵심 요소이므로 내용이나 제어 구조가 공개되는 경우에는 심각한 영향을 받을 수 있다. 임베디드 소프트웨어의 보안은 크게 두 부분으로 나뉘어 고려될 수 있다. 첫 번째는 외부의 위협원이 내부로 침투하여 관련 정보를 유출하는 것이고, 두 번째는 내부 혹은 외부의 위협원이 임베디드 소프트웨어에 악성 코드를 삽입하는 등 불법적인 행동을 하는 것이다. 본 논문에서는 첫 번째 관점에서, 임베디드 소프트웨어를 개발하고 있는 개발 현장에 대한 보안 점검 요소들을 도출하고 제안하였다. 개발 현장에 대한 보안 점검을 통해 외부 위협원의 접근을 원천적으로 차단하는 동시에, 임베디드 소프트웨어의 비인가된 변형을 간접적으로 예방할 수 있을 것으로 기대된다.

• 한국의상디자인학회지
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• 제12권2호
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• pp.21-39
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• 2010

The purpose of this study is to develop a creative technique in fashion illustration through analyzing expressive characteristics of $d{\acute{e}}paysement$. This study is analyzed by examining the general theories of $d{\acute{e}}paysement$ and investigating the expressive technique related to the method of $d{\acute{e}}paysement$ in surrealism art and the expressive characteristics which is applied to fashion illustration. In this study, the researcher examines cases of the application of $d{\acute{e}}paysement$ to the fashion illustration through reviewing fashion illustrators' art works created since 2000. $D{\acute{e}}paysement$ is unfamiliar impression with lexical meaning in french that is translated by transposition or displacement technique, or country and one's home leave or person put in strange living environment. The characteristics of $d{\acute{e}}paysement$ in fashion illustration include spatial distortion, combination of heterogeneous objects located anywhere odd and modification and conversion of objects such as material change, change-over of scale in usual objects and conversion of inanimate objects into organism. As a result of reviewing the expressive characteristics of Depaysement from fashion illustration artworks, it is found that the fashion illustration with $d{\acute{e}}paysement$ fortified the individuality in fashion illustration and helps produce a creative inspiration which results in a distinctive ideas. This also has a greate possibilities to produce a tremendous ideas in fashion illustration.

• 한국주거학회논문집
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• 제20권5호
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• pp.123-132
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• 2009

As society increasingly ages, maintaining an independent lifestyle at home becomes an important issue for older people. This study aims to determine old people's housing needs for maintaining an independent lifestyle despite their health status and living arrangements. A total of 438 residents voluntarily took part in a research questionnaire survey through the quota sampling method. The participants were grouped according to age (60-64, 65-69, 70-74, and over 75), gender (male and female), and house type (apartment houses and others). The results are as follows. (1) The senior residents are mostly within a non occupational, low income, and low subjective living status. (2) They are satisfied with their current residence and hope to manage the rest of their life in the same place. (3) Three out of five residents prefer the apartment housing type to other types of housing. The preferred dwelling size, number of rooms, and preference for use of an extra room all varied depending on gender and housing type as well as whether they were a couple or living alone. (4) The older residents have a higher need for a safety system than do the younger residents. Female residents pay more attention to convenience while male residents pay more attention to safety. The non-apartment residents require more modification to fundamental facilities such as a heating and ventilation system, wind protection, and additional storage than do the apartment residents. This study has thoroughly analyzed request characteristics according to basic qualities of the elderly households.