광위성 통신 및 광무선 LAN의 구현을 위한 대기 광통신 성능향상에 관한 연구

김영권,정진호,김재평,김인호,홍권의,한종석,Kim, Yung-Kwon,Jung, Jin-Ho,Kim, Jae-Pyung,Kim, In-Ho,Hong, Kwon-Eui,Han, Jong-Seok 한국전기전자학회 1997 전기전자학회논문지 Vol.1 No.1

무선광통신은 RF보다 고속도 대용량 정보전송이 가능하며, 높은 안테나이득을 얻을 수 있다. 그러나, 무선광통신에서 사용하는 대기채널은 흡수 교란 산란 등의 현상이 문제되고 있다. 이 현상들은 광무선통신시스템의 성능을 제한한다. 본 논문은 그 중에서 교란의 현상을 줄이기 위해 교란강도측정기와 광무선LAN을 제작하고, (2,1,6) 길쌈부호기와 비터비복호기를 사용하여 통신성능을 개선한 다음, 이를 실험적으로 확인하였다. 또한, 산란이 광무선통신시스템의 성능에 미치는 영향을 알아보기 위해 각 기상조건과 상, 하향링크에 따른 지구국안데나 직경을 수치해석하여 그 결과를 제시하였다. Wireless optical communication is able to obtain high antenna gain as well as utilize to transmit the high-speed information with large capacity than the RF communication. However, the propagation path (atmosphere) is considered as an attenuator occured turbulence, absorption and scattering. These undesired phenomena diminish the amount of light that is collected at the receiver. To evaluate the effect of the atmospheric turbulance and scattering, this paper perform the ground-to-ground wireless optical LAN experiment by using the (2,1,6) convolutional coder and Viterbi decoder, and analyze numerically the earth-station antenna diameter due to the propagation path condition and upstream/downstream link.

음식물찌꺼기 소멸효율 재고를 위한 발효균 및 발효 공정 최적화 연구

김영권,홍명표,김명진,홍석일,박명석,김종석,장호근,Kim, Young-Kwon,Hong, Myung-Pyo,Kim, Myung-Jin,Hong, Suk-Il,Park, Myung-Suk,Kim, Jong-Suk,Chang, Ho-Geun 유기성자원학회 1998 유기물자원화 Vol.6 No.2

186종의 후보미생물을 대상으로 우수발효(소멸)균 선발시험을 실시한 결과, Rhizopus sp., Galactomyecs sp., Pichia sp., Hyphopichia sp.로 구성되는 4종의 발효균을 선발하였다. 이들 발효균을 이용한 발효(소멸)공정 시험결과, 내용적 50L의 발효조에 대해서, BIO-CHIP Volume 25-30L, BIO CHIP입도 2.0-6.0mm, 송풍량 200-280L/min, 교반강도 24 rpm, 온도 $30-45^{\circ}C$가 최저 발효조건인 것으로 나타났으며, 이러한 조건에서 1일 1kg의 음식물을 30일간 투입하면서 소멸기를 가동한 결과, 93%의 소멸율을 나타내었다. 소멸기 배출물의 재활용 가치를 평가하기 위하여, 발아율 시험을 실시한 결과, 배출물을 적절하게 희석하여 사용하면, 퇴비로서의 가치가 매우 양호한 것으로 나타났다. For the effective disposal of organic food wastes, we seleted 4 strains of microorganism from 186 microbial candidate via enzyme activity test, salt tolerance, food decomposition rate, stability and safety of strains. The identity of these 4 strains are as follows : Fungi is Rhizopus sp., yeasts are Galactomyces sp., Pichia sp. and Hyphopichia sp., In the 50L fermenter scale, we tested various fermenting factor for the optimization of conditions of food waste decomposition using 4 selected strains. The optimum fomenting conditions were as follows : BIO-CHIP Volume 25-30 L, BIO CHIP size 2.0-6.0mm, air flow 200-280L/min, mixing intensity 2-4rpm, temperature $30-45^{\circ}C$. In these fermenting conditions, the efficiency of decomposition(rate of weight loss of food wastes) were 93%. Also the quality of fermenting output were assayed at the basis of fertilizer, and the results were as good as general compost.

음식물류폐기물 및 배출폐수의 특성

김영권,김세미,김민규,최진택,남세용,Kim, Young-Kwon,Kim, Se-Mi,Kim, Min-Kyu,Choi, Jin-Taek,Nam, Se-Yong 한국환경보건학회 2009 한국환경보건학회지 Vol.35 No.6

Waste generation was generally expected to steadily rise due to a rapid increase in population and economic growth. However, regulations on disposable goods and a volume-based waste fee system have led to a gradual reduction in the amount of waste. In the case of food waste, separation of food waste from other waste has been put in place since direct landfilling was banned in January 2005. The predicted generation amounts of food waste and wastewater in the model city were 54 ton/d and 127.3 ton/d by year 2020, respectively. However, appropriate treatment technologies for food waste and wastewater discharged from food waste treatment processes are yet to be established. In this study, the food waste and wastewater discharged from food waste treatment process in the model city were characterized by literal and field investigation.

사례기반 학습을 이용한 개인형 웹 에이젼트 시스템

김영권,이재필,이말레,김경만,김기태,Kim, Young-Kwon,Lee, Jae-Pil,Lee, Mal-Rey,Kim, Kyung-Man,Kim, Ki-Tae 한국정보처리학회 1998 정보처리논문지 Vol.5 No.6

최근 인터넷의 정보가 폭발적으로 증가하고 있다. 사용자들은 인터넷상의 수 많은 정보중에서 자신이 원하는 정보를 찾기 원하지만 유용한 정보를 찾기란 쉬운 일이 아니다. 본 논문은 이러한 문제를 효율적으로 해결하기 위하여 사례기반 학습을 이용한 웹가이드인 개인형 웹 에이전트 시스템을 제안한다. 웹가이드는 인터페이스 시스템과 학습 시스템의 두 개의 부시스템으로 이루어져 있으며, 다른 웹 브라우저와 같은 작업을 수행하며 사용자를 시스템에 연결시켜 준다. 또한 인터페이스 시스템은 현재 페이지에 있는 데이터를 학습 큐에 전달한다. 학습 시스템은 학습 큐에 있는 각 페이지를 평가함수를 이용하며, 가중치는 HTML 문서의 문자로 사용된 태그를 분석하여 결정된다. 실험 결과 일바 사용자와 전문 사용자 모두 자신이 원하는 정보를 웹가이드를 이용하였을 경우가 그렇지 않았을 경우 보다 빠르게 얻을 수 있었다. Recently, massive amount of infonnation is provided for the internet users. So users want to search information on Internet, but it is difficult to search information what you want. In this paper, we propose a personal Web-agent system using Case-based learning, Web-Guide. Web-Guide consists of two sub-system, interface-system and learning-system. Interface-system operates other web-browser nearly the same and connects user to system. And interface-system transfer datas of current page to learning-queue. Learning-system visit and evaluate the value of each page in learning-queue using evaluation-function that gave weight values occupied by analyzing tag used the character of HTML document. After all users who are known about artificial intelligence well and not made experiments by using Web-Guide, they reached their desired sites faster than before.

발전하는 학회를 지향하며

김영권,Kim, Yeong-Gwon 한국전자정보통신산업진흥회 1992 電子振興 Vol.12 No.1

'93 전국자연공원대회 참가기

김영권,Kim, Yeong-Gwon 한국자연공원협회 1993 한국자연공원 Vol.59 No.-

육미지황탕(六味地黃湯)이 생리활성지표(生理活性指標)와 임파구세포수(淋巴球細胞數)에 미치는 영향(影響)

김영권,류봉하,박동원,류기원,Kim, Young-Kuen,Ryu, Bong-Ha,Park, Dong-Won,Ryu, Ki-Won 대한암한의학회 1998 大韓癌韓醫學會誌 Vol.4 No.1

Yookmijihwangtang has been widely used oriental herb prescriptions, which is healing some discuss that come from insufficiency of innate essence and deficiency of kidney Ki. The meaning of healing discusses tonification of insufficient innate essence and insufficient kidney Ki can be regarded as reinforcement of wholely power of keeping homeostasis, that is correlated with immuno-responsibility which protects subject from outer antigen to keep normal vital condition. This study was aimed to investigate correlative effects of Yookmijihwangtang water abstract on the RBC, WBC, blood CD4+ T helper cell count, blood testosterone, blood cAMP and blood cortisol. 40 Sprague-Dawley male rats were divided into 5 groups(Normal, Control, Sample I, Sample II, Sample III), 6 animals in every group. Normal group was not treated anything, control group was administrated normal saline in the same dosage of Sample I. 3 Sample groups were received some of Yookmijihwangtang water abstract at one time per 24 hours during 5 days in different dosage. Sample I(1/310pack/ml), Sample II(1/62pack/ml), Sample III(1/2.4pack/ml). After finishing treatment, all experimental subjects were killed for blood sample on RBC, WBC, blood CD4+ T helper cell count, spleen CD4+ T helper cell count, axillary lymph node CD4+ T helper cell count. blood cAMP, blood testosterone and blood cortisol. The results were as follows; RBC and WBC were increased in all sample groups. Blood CD4+ T helper cell count(CD4+ T cell count in the blood/whole lymphocyte count in the blood ${\times}100%$) was Normal $46.17{\pm}5.88$, Control $44.50{\pm}4.37$, Sample I $53.00{\pm}2.28$, Sample II $53.83{\pm}3.87$, Sample III $52.17{\pm}2.93$. By the 95% Duncan ANOVA all experimental groups(sample I, Sample II, Sample III) showed slight significant difference from Normal and Control. Blood cAMP(nmol/l) were Normal $1.12{\pm}0.17$, Control $1.16{\pm}0.32$, Sample I $0.46{\pm}0.07$, Sample II $0.44{\pm}0.04$, Sample III $0.54{\pm}0.04$. All experimental groups were singificantly different from both Normal and Control groups(p<0.05). Blood cortisol(nl/ml) were Normal $100.00{\pm}2.00$ Control $90.00{\pm}4.00$, Sample I $440.00{\pm}5.00$, Sample II $520.00{\pm}40.00$, Sample III $470.00{\pm}7.00$. Blood cortisol of all experimental groups were significantly increased(p<0.05). The results suggest that Yookmijihwangtang water abstract could be administrated to patients who have some diseases insufficient essence.

첨단기술개발을 위한 산학협동 워크숍-우리나라 산학협동의 현주소

김영권,Kim, Yeong-Gwon 한국과학기술단체총연합회 1989 과학과 기술 Vol.22 No.12

건설안전교육이 불안전한 행동에 미치는 영향에 관한 연구

김영권,박종용,김성은,Kim, Young Kweon,Park, Jong Young,Kim, Sung Eun 한국재난정보학회 2021 한국재난정보학회 논문집 Vol.17 No.1

연구목적: 건설업 기초안전보건교육이 실시된 지 10년이 지난 지금 더 이상의 보수교육이 실시되지 않고 있으며, 기초안전보건교육을 이수한 사람은 신규채용자교육도 면제되고 있어서 안전교육이 부실화되고 있다. 조속히 보수교육과 신규채용자교육의 법제화로 불안전한 행동의 유발을 방지하고 안전사고를 방지하기 위한 전략적 방안을 모색하고자 한다. 연구방법: 본 연구에서는 건설안전교육인 기초안전보건교육과 신규채용자교육이 불안전한 행동인 Human Error와 위반 행동과의 구조적 관계를 설문을 통한 회기분석을 실시하였다. 연구결과: 설문조사는 건설업 기초안전보건교육과 신규채용자 교육이 재해의 인적 요소인 Human Error와 위반 행동 감소에 많은 영향이 있는 것으로 분석되었고 지속적인 안전교육이 안전의식을 높일 수 있음을 확인하였다. 결론: 기초안전보건교육의 보수교육과 신규채용자 교육의 법 개정으로 안전교육의 부실화를 방지하여야 한다. Purpose: Ten years after basic safety and health education in the construction industry has been implemented, no more maintenance education has been provided, and those who have completed basic safety and health education are exempt from new employee education. As soon as possible, we will seek strategic measures to prevent unstable behavior and prevent safety accidents by legislating conservative education and new recruitment education. Method: In this study, basic safety and health education, which is construction safety education, and human error, which is unstable behavior of new employees, and structural relationship between violation behavior were conducted through survey. Result: The survey analyzed that basic safety and health education in the construction industry and new recruitment education had a significant impact on the human factors of the disaster, Human Error, and the reduction of violations, and confirmed that continuous safety education could increase safety awareness. Conclusion: The insolvency of safety education shall be prevented by the revision of the Act on the remuneration of basic safety and health education and the education of new employees.

환경정책 - 환경신기술 개발촉진을 위한 신기술인증.기술검증제도의 활용 및 발전방안

김영권,Kim, Yeong-Gwon 환경보전협회 2009 환경정보 Vol.31 No.382