• Journal of Nutrition and Health
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• 제10권2호
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• pp.5-11
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• 1977

The mature human braun contains over 10 billion nerve cells (neurons), whose functions are directly related to the acquisition, transfer, processing, analysis, and utilization of all the information. There are also billions of glial cells, which serve primarily to support and to maintain the integrity of the neuron network and to synthesize an essential fatty strucfure, myelin. In the human brain DNA content therefore cell number rises rapidly until birth and then more slowly until $5{\sim}6$ months of age, when it reaches a maximum. While glial cells may be replaced, the more important nerve cell neurons can never be replaced once they are formed. Humans are born with their full complement of neurons and every neuron is as old as each individual. Thus prenatal malnutrition can seriously affect a person's entire life by severely inhibiting the production of neurons before birth.It has been demonstrated that in humans severe malnutrition during the fetal period and in infancy is associated with intellectual impairment. Severely malnourished children have brains smaller than average size and have been found to have $15{\sim}20%$ fewer brain cells than wellnourished childen. There is growing body of literature pointing to malnutrition as a cause of abnormal behavior as evidence that suggests these abnormalities may produce chromosomal damage that may persist forever. Although cognitive development in children is affected by multiple environmental factors, nutrition certainly deaerves more attention than it has received.

• 한국환경과학회지
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• 제1권2호
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• pp.137-144
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• 1992

Flocculation-spectrophotometry and streaming current detector( SCD ) method were investigated and compared in order to determine the optimum dosages of synthetic cationic polymers of different charge density and molecular mass for the removal of humic acid. The optimum dosage for each of the polymers was determined with the dosage at which the lowest absorbance of humic acid was shown for the formal. and was determined with the dosage required during charge neutralization of humic acid for the latter It was in good agreement between both methods and there is a strong inverse correlation between the optimum dosage and charge density of the polymers, with highly charged polymer giving the lowest optimum dosage, pointing out the importance the charge neutralization. By flocculation-spectrophotometry, it was found that the absorbance of humid acid with the amount of each of the polymers dosed, changes sharply for polymers of high charge density, but changes rather broadly for polymers of low and middle charge density, Both methods showed that a stoichiometric correlation exists between the optimum dosage of each of the cationic polymers and the negatively charged humic acid.

• 대한한의학원전학회지
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• 제30권4호
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• pp.95-108
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• 2017

Objective : The current wuiwan poses a challenge in understanding related disease because one term refers to many different parts. Therefore, the objective of this paper is to review historical documents and define the areas of wuiwan revolving around the wuiwan-related disease. Method : The Sikuquanshu database, Traditional Chinese Medical(TCM) books webdatabase were studied, and selections were made from the texts that discussed wuiwan. Result & Conclusion : The term wuiwan is used to refer to stomach's capacity. The word wuiwan is first discovered in Neijing. wuiwan-related disease as shown in Neijing does not move beyond the scope of stomach. The view of seeing wuiwan as part of esophagus is discovered in the text which explains dysphagia, and it is believed that this expression was used in the purpose of pointing the airway and the esphagus. Therefore, the reason wuiwan was viwed as esophagus has to be confined within the texts in documents that explain dysphagia or within the Four-Constitution Medicine. Generally, it is more reasonable to see wuiwan within the scope of stomach.

• 한국군사과학기술학회지
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• 제15권3호
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• pp.322-333
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• 2012

AESA radar is able to instantaneously and adaptively position and control the beam, and such adaptive beam pointing of AESA radar enables to remarkably improve the multi-mission capability. For this reason, Radar Resource Management(RRM) becomes new challenging issue. RRM is a technique efficiently allocating finite resources, such as energy and time to each task in an optimal and intelligent way. Especially radar beam scheduling is the most critical component for the success of RRM. In this paper, we proposed a rule-based scheduling algorithm and Simulated Annealing(SA) based scheduling algorithm, which are alternatively selected and applied to beam scheduler according radar load status in real-time. The performance of the proposed algorithm was evaluated on the multi-function radar scenario. As a result, we showed that our proposed algorithm can process a lot of beams at the right time with real time capability, compared with applying only rule-based scheduling algorithm. Additionally, we showed that the proposed algorithm can save scheduling time remarkably, compared with applying only SA-based scheduling algorithm.

• 한국정보통신학회논문지
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• 제13권8호
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• pp.1721-1728
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• 2009

미래형 컴퓨터 인터페이스는 기존의 마우스에서 사람의 손 또는 눈 등으로 대체되고 있다. 본 연구에서는 자이로센서를 이용하여 장갑형 무선 마우스를 개발하였다. 이는 사람의 손동작이 마우스 커서 움직임을 대신한다. 그리고 블루투스 기반의 무선센서 네트워크 기술을 도입하여 마우스와 시스템간의 연결을 무선화하여 유선마우스가 갖는 활동의 제약성을 극복하였다. 또한 USB 포트 인터페이스를 사용하여 설치 및 사용이 용이하도록 하였다. 개발한 장갑형 무선마우스는 프리젠테이션이나 게임 등의 다양한 사용자 인터렉션을 필요로 하는 분야에 포인팅 입력장치로 활용될 수 있는 가능성을 확인할 수 있었다.

• 한국정보처리학회논문지
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• 제3권1호
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• pp.167-180
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• 1996

스칼라 처리지향의 기계에서 벡터 처리를 위해서는 스칼라 처리가 벡터 요소 수 만큼 수행되어야 한다. 소위 von Neumann원리에 의한 벡터 처리기법이다. 메모리를 악세스 하는 장치로는 명령어의 순차적 계수를 위한 프로그램 계수기 뿐이기 때문에 벡터 데이터의 악세스는 명령어의 지시나 또는 ALU 의 주소 계산에 의해 수행되어 야 한다. 여기서는 재래식 개념의 하드웨어적 결합을 보충하기 위해 벡터 요소들을 입체적으로 악세스하기 위한 악세스 장치의 설계를 제안한다. 벡터의 구조 처리를 위한 필요성은 명령어군에 포함되었고 그들 명령어들은 데이터 처리와 동시에 데이터 악세스 안에 처리되도록 한다.

• 한국실내디자인학회:학술대회논문집
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• 한국실내디자인학회 2006년도 추계학술발표대회 논문집
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• pp.213-214
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• 2006

Now days subway represents a gateway of the city and a center of transportation. It belongs basic facilities to connect the town and suburbs and has strongly regarded as a means of development of city. but It's time that the subway should be changed to reach the needs which give visitors comfortable space and convenient image to use it and it also has a function of transportation because the present generation have turned an information-oriented and specialized society. So we try to put the essential points as like the followings, designing the CANOPY (Busan subway-3rd line). the first, We create an distinctive image with effect to get a regional self-confidence the second, we make new traffic space including potential energy in new millennium ages the third, we need an effort and experiment to overcome contradiction pointing to unity between varieties. To conclude, we want to create CANOPY subway with an individual characters for Busan and aim at a fine view and improved image of subway for Busan, considering the belows.

• 한국항공우주학회지
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• 제30권8호
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• pp.126-132
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• 2002

인공위성의 각종 탑재체에 의해 발생하는 미소진동은 위성의 고정밀 지향도를 떨어뜨리고 고해상도 카메라를 탑재하고 있는 다목적 실용위성 같은 경우, 위성 영상의 해상도 및 분해능을 저하시킨다. 본 논문에서는 인공위성체 미소진동의 가장 큰 요인 중의 하나로 작용하는 반작용휠의 미소진동 측정 기술, 동특성 해석 및 모델링 기술을 소개하고 이의 진동 저감 방법 등을 모색하였다. 이러한 기술들을 토대로 하여 반작용휠과 유사한 동특성을 가지는 진동 발생기를 제작, 미소진동을 측정하였고 수동 감쇄 재료를 이용하여 이를 저감 시키는 실험을 수행하였다.

• 한국측량학회지
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• 제17권1호
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• pp.41-49
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• 1999

토지와 건축물 등 부동산 관련 정보는 타 정보화 사업의 기반이 되며 이러한 업무를 효율적으로 실현시키는 것이 도시행정의 중요한 업무로 등장함에 따라 민원 업무와 관련하여 지적도면의 전산화가 절실히 요구되고 있다. 본 연구는 대전시 유성구를 대상지역으로 지적도면의 문자정보와 도면정보에 대한 자료기반을 구축하고 토지이동 업무, 공시지가 관련 업무, 대단위 업무 등으로 나누어 지적도면 관련 업무의 효율적 관리를 위한 체계를 개발하였다. 본 연구에서 개발한 체계를 통해 민원업무와 관련한 사용자 편의성을 높이고, 지적도를 기본으로 한 토지정책 수립에 필요한 다양한 정보를 제공할 수 있었다. 또한 자료구축에 따른 문제점을 제시함으로서 앞으로 진행될 전국적인 지적도면 전산화에 대한 방향과 토대를 마련할 수 있었다.

• Wind and Structures
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• 제19권3호
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• pp.295-320
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• 2014

Starting from an overview on the research on thunderstorms in the last forty years, this paper provides a general discussion on some emerging issues and new frameworks for wind loading on structures in mixed climates. Omitting for sake of simplicity tropical cyclones and tornadoes, three main aspects are pointed out. The first concerns the separation and classification of different intense wind events into extra-tropical depressions, thunderstorms and gust fronts, with the aim of improving the interpretation of the phenomena of engineering interest, the probabilistic analysis of the maximum wind velocity, the determination of the wind-induced response and the safety format for structures. The second deals with the use of the response spectrum technique, not only as a potentially efficient tool for calculating the structural response to thunderstorms, but also as a mean for revisiting the whole wind-excited response in a more general and comprehensive framework. The third involves the statistical analysis of extreme wind velocities in mixed climates, pointing out some shortcomings of the approaches currently used for evaluating wind loading on structures and depicting a new scenario for a more rational scheme aiming to pursue structural safety. The paper is set in the spirit of mostly simplified analyses and mainly qualitative remarks, in order to capture the conceptual aspects of the problems dealt with and put on the table ideas open to discussion and further developments.