통합 차량 네트워크 시스템을 위한 노드 기반 FlexRay-CAN 게이트웨이 설계

김만호(Man Ho Kim),이석(Suk Lee),이경창(Kyung Chang Lee),하경남(Kyong Nam Ha) 한국자동차공학회 2011 한국자동차공학회 부문종합 학술대회 Vol.2011 No.5

As vehicles become more intelligent, in-vehicle networking (IVN) systems such as controller area network (CAN) or FlexRay are essential for the convenience and safety of drivers. To expand the applicability of IVN systems, attention is currently being focused on the communication between heterogeneous networks such as body networking systems or chassis networking systems. Message mapping based gateway was developed to communicate between FlexRay and CAN network to improve exchanging information of vehicle. However, there are obstacles for the wide acceptance of the FlexRay-CAN gateway of vehicle. First, when message ID was changed of network, gateway must be reloaded changed message mapping table. Second, if the exchanging message is increased in the network, software complexity of gateway is increased rapidly. In order to overcome these obstacles, this paper presents a node mapping -based FlexRay-CAN gateway for IVN systems. In addition, this paper presents a node mapping based FlexRay-CAN gateway operation algorithm along with the experimental evaluation for ID change.

Effects of aerosol on evaporation, freezing and precipitation in a multiple cloud system

Lee, Seoung Soo,Kim, Byung-Gon,Yum, Seong Soo,Seo, Kyong-Hwan,Jung, Chang-Hoon,Um, Jun Shik,Li, Zhanqing,Hong, JinKyu,Chang, Ki-Ho,Jeong, Jin-Yim Springer-Verlag 2017 Climate dynamics Vol.48 No.3

<P>Aerosol effects on clouds and precipitation account for a large portion of uncertainties in the prediction of the future course of global hydrologic circulations and climate. As a process of a better understanding of interactions between aerosol, clouds and precipitation, simulations are performed for a mixed-phase convective multiple-cloud system over the tropics. Studies on single-cloud systems have shown that aerosol-induced increases in freezing, associated increases in parcel buoyancy and thus the intensity of clouds (or updrafts) are a main mechanism which controls aerosol-cloud-precipitation interactions in convective clouds. However, in the multiple-cloud system that plays much more important roles in global hydrologic circulations and thus climate than single-cloud systems, aerosol effects on condensation play the most important role in aerosol-induced changes in the intensity of clouds and the effects on freezing play a negligible role in those changes. Aerosol-induced enhancement in evaporation intensifies gust fronts and increases the number of subsequently developing clouds, which leads to the substantial increases in condensation and associated intensity of convection. Although aerosol-induced enhancement in freezing takes part in the increases in condensation by inducing stronger convergence around cloud bottom, the increases in condensation are similar to one order of magnitude larger than those in freezing. It is found that while aerosol-induced increases in freezing create intermittent extremely heavy precipitation, aerosol-induced increases in evaporation enhance light and medium precipitation in the multiple-cloud system here. This increase in light and medium precipitation makes it possible that cumulative precipitation increases with increasing aerosol concentration, although the increase is small. It is interesting that the altitude of the maximum of the time- and domain-averaged hydrometeor mass densities is quite robust to increases in aerosol concentration. This is because locations of gust fronts and homogeneous freezing do not vary significantly with changing aerosol concentration and this outweighs aerosol effects on hydrometeor size.</P>

헬스클럽의 서비스 질과 고객만족 및 재 가입의사의 관계

성영호,김경식,권창기,정철규,신인숙 龍仁大學校 體育科學硏究所 2003 體育科學硏究論叢 Vol.13 No.1

This study was to analysis the relationship between service quality and consumer satisfaction, repurchase in health club. To attain the goal of the study described above paragraphs, the subject of this study were selected by cluster random sampling method. This study drew out and analyzed 310 people in total. The result of reliability check up was here below; Chronbach 'α=.82-91. To analyze materials, multiple regression and path analysis were used as statistic analysis techniques. The conclusion based on above study method and the result of material analysis are here below. First, the service quality influences on repurchase. Second, the service quality influences on consumer satisfaction. Third, the service quality does directly influences on consumer satisfaction and repurchase. Namely, consumer satisfaction is a variable connecting service quality and re-purchase.

서울 南山의 森林植生

金昌浩,任慶彬 東國大學校 1992 東國論叢 Vol.31 No.-

Namsan, an another name Mok-myuk-san used in past days, lies at almost geometric center of Seoul city. The altitude of the peak attains to 265m and 2.1Km long and 2.7Km wide, about 300 hectares of area. Since selecting Seoul as the capital site which dates back to about 600 years ago, Namsan literally meaning "a southernly located mountain" was cultivated and protected by the government under strict control rules particulary during Chosun dynasty because nation though it has a symbolic meaning of capital's prestige. It is realized that Namsan has been operating, a cooling oasis in Seoul a heated large island and lungs of it. It is furnishing immense influeneces in various ways whether as being tangible or intanggible assets to the citizens. One of historical records says that the government mobilized 3000 mean to plant pine seedlings in this area for 20 days with 500 assistants in the spring of 1411. Taking many other records into account the scenic landscape of Namsan was very highly valued. Currently this low hilly mountain has been designated as the Seoul Natural park and loved by all the citizen. In present paper authors dicussed some hisorical and cultural aspects of Namsan and presented the floral list. The dominating endemic species are Pinus densiflora S. et Z. and Quercus mongolica Fisher and subdominating ones are Sorbus alnifolia Koch, Prunus sargentii Rehder and Styrax japonica S.et Z. and Rhododendron mucronulatum Turcz. as shrub. the community of Pinus densifora itself or with some accompanying species occupied a little more than 25 percent of the total area. The same was found with the Quercus mongolica community. As this area belongs in terms of ecology to the deciduous broadleaved forest zone, the characteristic species are Evodia daniellii Hemsley, Maakia amurensis Rupr. et max., Prunus padus L. var. seoulensis Nak., Sorbus commixta Hedl., Lindera obtusiloba Blume, Zelkova serrata Makino, Ulmus parviolia var. coreana Uyeik, Quercus serrata Thunb., Quercus aliena Blume, Quercus dentata Thunb., Quercus acutissima Carr, Carpinus lakiflora Blume, Alnus hirsuta var. sibirica Schneider, Juglans mandshurica max., Salix glandulosa Seem., Populus davidiana Dode and others. Some big and aged trees are growing. The trees of DBH more than 70cm are Ginkgo biloba L., Zelkova serrta Makino, Salix pseudolasiogyne Lev., Robinia pseudoacacia L. and Platanus orientalis L. and trees 60∼70cm of DBH are Prunus padus var. seoulensia Nak., Ailanthus altissima Swingle, Quercus acutissima Carr., ulmus pumila L., Salix matsudana for. tortuosa Rehder and Kalopanax piatus Nakai among them, the biggest one, Ginkgo biloba L., attains 108cm of DBH. And suggested is better to stick to endemic species in furture reforestation work rather refraining from introduced ones. This means that to keep this area with original native tree species and remain wild state as much as possible is our necessary responsibility, avoiding introduced foreign trees.

줄눈콘크리트 포장의 줄눈 거동 측정

윤경구,김동호,홍창우,이주형 江原大學校 産業技術硏究所 2001 産業技術硏究 Vol.21 No.B

In this research, the early-age movements of joint at JPCP(Jointed Plain Concrete Pavement) were measured by field tests. The field tests were carried out for 5 days just after concrete placement, for 1 day after 52 and 72 days on Chung-Ang Expressway construction site in Dan-Yang on the 28th and 29th of May 2001. The joint movements were measured by demec gauge and clip gauge. The results of regression analysis for the data measured during early 5 days showed that the joints of No.4, No.5, No.6, No.10, No.13, and No.15 could be considered as a moving joint. From data analysis on July 20, the joints of No.2, No.9, and No.10 showed the significant correlations from the minus value of coefficient of regression. As a result of regression data on August 8, joint movements occurred at all joints. Joint freezing and closure could be judged from the regression analysis using joint opening and total temperature measured at field tests.

콘크리트 포장 슬래브의 변형률 측정에 관한 연구

김동호,전성일,최창식,윤병성,윤경구 江原大學校 産業技術硏究所 2002 産業技術硏究 Vol.22 No.A

The purpose of this paper is to investigate for strain measurement of concrete pavement slab at field. The early-age behaviors of concrete pavement were measured using the strain gages. From the static and dynamic wheel loading tests, the outputs from each gages were recorded. The measured data, also, was compared to those from finite element analysis. The static wheel loading tests were performed in twice, and the dynamic wheel loading tests were performed at the speed 10㎞∼50㎞. The results could be summarized as follows: To embed the strain gage accurately and stably in concrete pavement, a chair and protective box must be used. The protective box must not be affected from the outside vibrating. From the results of early-age strain measurement, it was found that the strain varied at the maximum value of 180 με. From the results of static wheel loading tests, A1, A2 and B gages generally developed a consistent tendency. When comparing the results from the measured at field and the calculated by FEM analysis, the data of A1 and B gages were similar to that from theory. The values from the field test were generally higher than that from the theory. From the results of dynamic wheel loading tests, it was known that the measured strain at field became smaller as the truck speed became faster, indicating the maximum at the range of 12∼13 με.

유지보수를 위한 RSLMC의 산성 저항성

홍창우,김동호,이훈재,권혁찬,윤경구 江原大學校 産業技術硏究所 2002 産業技術硏究 Vol.22 No.A

Latex modified concrete is governed by both cement hydration and polymer film formation processes in its binder phase. Such the reactions are expected to improve the polymer-cement co-matrixes themselves and the bond between the cement hydrates and aggregates, and to improve the properties of hardened latex-modified concrete. The purpose of this study was to study the strength and chemical resistance of Rapid-setting latex modified concrete(RSLMC) with the main experimental variables such as latex content(0, 5, 10, 15, 20%) and water-cement ratio(36, 38, 40%) at latex content 15%. Water absorption test was carried out to estimate water permeability resistance. Chemical resistance test was carried out to measure the weight change and to observe the appearance of RSLMC immersion in hydrochloric acid, sulfuric acid, and calcium choloride.

웹마이닝을 이용한 M-Commerce 추천시스템 설계 및 구현

이경호,윤창현,박두순 한국컴퓨터교육학회 2003 컴퓨터교육학회 논문지 Vol.6 No.3

추천 시스템들은 고객들이 E-Commerce 사이트에서 상품들을 사는 것을 도와주기 위해서 지속적인 증가추세로 사용되었다. 추천시스템들은 다양한 고객들의 선호도에 따라 유사성과 비유사성에 대한 정보의 기초위에서 고객들의 잠재적인 관심 항목들에 대해 개인의 취향에 맞게 추천하는 기술들은 제공한다. 그러나 추천시스템에 많은 관심을 가짐에도 불구하고 그들의 성능에 대한 공개된 기술이나 정보는 매우 제한적이다. 본 논문에서는, 과거 고객들의 구매행동, 고객정보, 데이터마이닝의 연관규칙을 이용한 M-Commerce 추천시스템을 설계하고 구현하였다. Recommender systems are being used by an ever-increasing number of E-Commerce sites to help consumers find products to purchase. Recommender Systems offer a technology that allows personalized recommendation, of items of potential interest to users based on information about similarities and dissimilarities among different user’ tastes. However, despite enormous interest in recommender systems, both the number of available published techniques and information about their performance arc limited. In this paper, we design and implement an M-Commerce recommendation systems using the past buying behavior of the consumer, consumer information, and association rule mining.

방송 매체에 나타난 국민정신교육 실태 분석 평가

추광영,김경동,정원식,이장호 서울대학교 사회과학연구소 1985 社會科學과政策硏究 Vol.7 No.2

Giant Dermatofibroma with Granular Cell Change: Side Effect of Bee venom Acupuncture?

( Do Young Rhee ),( Woon Kyong Chung ),( Gyeong Hun Park ),( Sung Eun Chang ),( Mi Woo Lee ),( Jee Ho Choi ),( Kee Chan Moon ),( Jai Kyoung Koh ) 대한피부과학회 2008 초록집 Vol.46 No.10