u-캠퍼스 지능형 정보 전달 서비스에 관한 고찰

한희도,이양민,이재기 東亞大學校附設 情報技術硏究所 2005 情報技術硏究所論文誌 Vol.13 No.1

With the development of ICT(Information Communication Technology), these technologies have been utilized in education field broadly Recently, u-Campus that applies the ubiquitous computing and network technologies to campus is going to appear. In this paper, we propose a intelligent information delivery service that can provide new information to students in campus. Students In campus use all sorts of information, such as educational matters, employments, entering upon studies, etc. In the database at anytime and anywhere. Using the proposed service in this paper, students can do their campus life more efficiently and easily.

u-Campus를 위한 모바일 IPv6 프로토콜 분석

한희도,이재기 東亞大學校附設 淸報技術硏究所 2006 情報技術硏究所論文誌 Vol.13 No.2

u-Campus is usually constituted of not wired networks but wireless network forms, and there is a need to support these networks. The current Mobile IPv4 method has too many limitations and in order to assure enhanced service and mobility, the next generation wireless network Mobile IPv6 is being considered. Therefore, Mobile IPv6, which supplements u-Campus mobility purposes along with faults in the IPv4, is naturally the most reasonable choice. This paper utilizes four protocols out of the currently existing Mobile IPv6 protocol to compare and analyze the compatibility of protocol types with the u-Campus. The result has been that in hierarchial structure and separated space centralized environments such as the u-Campus, the F-HMIPv6 protocol based structure is most effective. Therefore, according to the results in hand, from here on protocol design will be greatly influenced by the mobility and efficiency objectives induced by the materialization of the u-Campus.

소수성 촉매를 이용한 수소동위원소 교환 반응 측정을 위한 순환 반응기

최희주,이한수,안도희,강희석,김광락 한국공업화학회 2002 응용화학 Vol.6 No.2

The catalytic rate constants of hydrophobic catalysts developed for the removal of tritium mainly generated in the pressurized heavy water reactors should be measured. A recycle reactor was designed and built for characterzing the long-term behavior of the catalyst performance at the various temperatures and gas velocities.The catalytic rate constants were measured at the apparent gas velocity of 0.5 m/s and the temperature of 60℃. The initial catalytic constant was 8.44×10^-4mol/g.sec. This value is much greater than that considered in the design of Wolsong Tritium Removal Facility.

전해환원수 음용이 마우스의 혈액과 장기조직에 미치는 영향

정한석,김동희,윤양숙,등영건,장병수,이규재 韓國電子顯微鏡學會 2008 Applied microscopy Vol.38 No.4

본 연구는 전해환원수 음용에 대한 안전성을 조사하기 위하여 실험동물을 이용하여 사망률 확인, 체중 비교, 혈액의 생화학적 변화, 염증, 면역세포의 비교, 내부 장기의 형태적 변화, 장기의 무게 변화 및 조직학적 검사를 통하여 전해환원수가 생체에 미치는 영향을 확인한 결과 다음과 같은 결론을 얻었다. 전해환원수를 급이한 실험군에서 사망, 행동 및 외형 이상 유무 관찰 결과 아무런 증상이 나타나지 않았으며, 체중은 감소하는 경향을 보였다. 실험군에서 혈액의 생화학적요소인 K^(+), Cl^(-),Ca^(2+), GPT, GOT, CRE 및 ALP에서는 유의한 수준의 변화가 관찰되지 않았으나 Na^(+)와 BUN에서는 실험군이 대조군에 비해 더 감소되었다. 혈액 내 면역세포를 비교한 결과 호염기구, 호산성구 및 단핵구 등은 큰 차이가 없으며, 실험군에서 호중구는 감소하였고, 림프구는 증가하는 경향을 보였다. 또한 위, 소장, 심장 및 간을 조직학적으로 관찰한 결과 모든 장기에서 병리적 이상 소견은 관찰되지 않았다. 따라서 본 연구를 통하여 전해환원수는 생체에서 큰 문제를 유발시키지 않는 안전한 물임을 알 수 있었고 국내에서 전해환원수에 대한 연구가 거의 없는 실정이기 때문에 전해환원수의 안전성을 입증하기 위한 기초자료 마련 및 제공에 의의가 있다고 할 수 있다. The main purpose of this study is to investigate the effects of electrolyzed reduced water (ERW) on blood components and electrolytes, as well as elected tissues on mice. The mice were supplied either tap water (control group) and ERW (experimental group) for two months. There were no significant different between two groups anatomically and physiologically. In the blood electrolyte study, the experimental group had less Na and BUN compared to the control group. In the blood component study, the experimental group had less neutrophiles and the control group had more lymphocytes. In histological study, no tissue changes were noticed in various organs, including the stomach, small intestine, heart, and liver tissues. In conclusion, ERW has no noticable side affects on blood and organ tissues, and might be safe to a living body.

u-캠퍼스 구축 모델에 관한 연구

이양민,한희도,구영철,이재기 東亞大學校附設情報技術硏究所 2005 情報技術硏究所論文誌 Vol.12 No.2

Together with the development of information and telecommunication technologies, the information environment of campus also has been changed. Recently uniquitous computing technology is going to introduce into various areas. In this paper we proposed new construction models for u-campus which applies to ubiquitous computing technologies. Our proposed models are included in a network model and a service system model. The network model is classified into stage 1~3 according to supported network bandwidths and services. Also the service system model is consisted of 3 levels hierarchical structure according to their functions and characteristics.

항만 통합 운영 시뮬레이터 설계 및 구현에 관한 연구

이양민,한희도,이재기 東亞大學校附設 情報技術硏究所 2005 情報技術硏究所論文誌 Vol.13 No.1

An advanced nation that use trade to the center of economy are taking advantage of ICT(Information Communication Technology) actively in physical distribution processing to manage their national ports more efficiently. Especially, computer simulation is used mainly by the optimization method of the freight processing. In this paper, we divide the loading and unloading step by 5 steps with various factors that can be considered at the freight processing in port. And we propose a port integral management simulator development method that can perform these simulations. Also, we implement 3D modeling for the loading and unloading equipments of port. According to our study, we can produce suitable factors that need to perform the freight processing in port efficiently, additionally can observe simulation process through virtual port with reality.

일부 병원에서 실시하고 있는 X-Ray 촬영조건의 비교연구 : 全南地域을 중심으로 한 X-Ray 관전압에 對하여 Compared with X-Ray tube Voltage in Chonnam Area

양길순,류영래,한재진,함희석 광주보건대학 1981 論文集 Vol.6 No.-

To know the effect of tube voltage in X-Ray Radiography. We made an experimental study on the tube voltage, on the exposure dose in taking general examination, and obtained the results as follows. A) In the Radiographic of the Chest P-A; The experimental value of tube voltage was obtained under the control of the applied voltage, the kind of some apparatus and thickness of body. 1) The average chest Radiographic condition was resulted as 65.5Kv, 16.6 mAs in Hospital around the chonnam area 2) It was resulted 21.93cm in average Thickness of the chest, exposure dose 20mR B) The thickness was 19.22cm in the abdomen and then appeared average tube voltage was 71.6Kv, 68.2 mAs C) Estimation could not in difference with because of the working dark room uniformly to hand-operated and automatic process.

고리 및 영광 논토양에 대한 ^137Cs의 모의 사고 침적시 토양-벼 전이계수

최용호,임광묵,박효국,최희주,이한수 대한방사선 방어학회 2002 방사선방어학회지 Vol.27 No.4

고리 및 영광 원전 반경 5km 내 11곳의 논토양을 원상대로 재배상자에 채취하여 실험 온실로 운반한 후 벼의 이식 전과 생육중에 ^137Cs을 담수의 표면에 처리하였다. 이식전 처리시 ^137Cs의 토양-작물체 전이계수(m²kg^-1-dry plant)는 토양에 따라 8배 정도의 변이를 보였고 평균은 지역간 차이가 거의 없이 쌀알의 경우 1.1 x 10^-4 , 볏짚의 경우 2.7 x 10^-4 이었다. 분얼초기 처리와 수잉기 처리시 전이계수는 이식전 처리에 비해 대체로 2∼3 배 및 15∼30 배 정도 높았다. 토양 유기물 함량과 전이계수 간에는 정의 상관이 있었다. 본 실험결과에 입각하여 우리나라 논에 대한 일회성 사고침적시 적용할 수 있는 ^137Cs 전이계수의 대표치를 침적시기별로 제안하였다. Undisturbed soil blocks were taken into culture boxes from 11 paddy fields within 5 km radii of Kori and Yonggwang NPPs and carried to a greenhouse where ^137Cs was applied to the surface of standing water before rice transplanting and during its growth. Transfer factors (m²kg^-1-dry plant) of ^137Cs applied before transplanting varied with soils by a factor of about 8. The mean was 1.1 x 10^-4 for hulled rice seeds and 2.7 x 10^-4 for straw without significant regional differences. The ^137Cs applications at the early tillering stage and booting stage resulted in, on the whole, 2∼3 and 15∼30 times, respectively, higher transfer factors than the application before transplanting. A positive correlation was found between soil organic matter and transfer factor. Generic values of transfer factors were proposed for an acute accidental deposition of ^137Cs onto Korean paddy fields in different times of the year.

Safety Analysis of Plant Concrete Structure by Time Domain Reflectory

Heui-Soo Han(한희수),Yong-Gil Kim(김용길),Nam-Soo Kim(김남수) 한국생산제조학회 2007 한국공작기계학회 춘계학술대회논문집 Vol.2007 No.-

Most civil structure performance assessment, e.g., damage, failure, and non-destructive inspection approaches, are difficult to execute on hard-to-reach elements of a structure. These routine methods are also time-consuming, with uncertainties involved and not cost-effective because of technologies limits. In civil engineering field, the monitoring of element of a long-type structure by Time Domain Refectory (TDR) or Fiber Optic Sensor (FOS) is aimed at early detecting of the safety of structure through the analysis of obtained deformation data at numerous points along the axis of the element. This study presents reasonable relationships to estimate the concrete safety and deformation based on TDR data to analyze concrete temperature variance. To measure the temperature variance in civil structure, TDR composed of two copper lines is installed in concrete specimen, From the laboratory test, TDR system could make the correct information about temperature variance of concrete curing. Therefore it is concluded, at first the mechanism of correct concrete curing could be acquired by TDR system, secondly from curing data, construction process in field could be controlled properly, it would be much more effective to apply at health monitoring system in civil structure compared to conventional sensor or FOS systems.

아포 지단백질 E와 알츠하이머병

Han, Seol-Heui 江原大學校 附設 韓國營養科學硏究所 1995 營養科學論叢 Vol.1 No.-