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첨단 차량/도로 시스템(AVHS)을 위한 통신 시스템의 신뢰도 분석 : 차량 간 통신에 대하여 Vehicle-to-Vehicle Communication
한기철,김응배,남옥우,김재형 國立 昌原大學校 情報通信硏究所 1997 精報通信論文集 Vol.1 No.-
ITS(Intelligent Transportation System) is the most promising method to maximize the efficiency on existing highways. The major tool that enables ITS schemes is wireless communications either existing dedicated wireless systems. The subject of communication architecture for AVHS has been considered by many in the literature[1-3]. In normal, the length of communication link in vehicle-to-vehicle is relatively short but it suffers from multipath fading and interference. The communication scheme in AVHS needs a extremely high reliability and a very short communication cycle. The objective is to assess the reliability of various communication schemes as a function of the given bandwidth, the distance of communication link and frequency reuse factor. Specifically, TDMA system was considered. To increase the reliability of transmission in a fading environment, the block coded BPSK with perfect channel state information was considered. We present the analytical results of the reliability of TDMA with block code at given transmission bandwidth, frequency reuse distance.
金載衡 호남대학교 1987 호남대학교 학술논문집 Vol.8 No.2
Art as a painting of genuine creation art and Iiterature as a creation throughout imagination are different from each other in their proper natre and characteristics. The latter takes the static aspects of life or man as object while the formet does the sensory one of nature of man as of ject. However, they have a great deal of interrelation in aestheaesthetical aspect in that boht of them evake aesthetical feeling from the inside of man and experience the aesthetical emotion. When we examine the proper essential charcteristics of art and liter ature and interrelation between both of them, it can be said that art is an activity which can cognity and express the beauty by the sensory work called the sense of sight and, on the contrary, literature is an activity which can cognify and express the beauty interward by the eye of mind called "the mind's eye." Accordingly, if we assume that art is the moulding activity which expresses the aesthetical emotion into the second or third dimension with the characteristics of the nature of moulding and space and the visuality, it can, contrastively, be said that literature is the activity which evokes called only a letter and the form of sentence structure. In art the activity or the beauty is assumed to be an external feeling which shows its outward aspect in the cognition or expression of the beauty for its object, that is the beauty by the sensoy, intuitive activity. but the beauty or the activity of literature is assumed to be the internal feling which shows the cognition or expression of the beauty for its object inward teh mind of man, that is the beauty by the imaginative, intuitive activity. Referred to the interrelationship of art and literature, boty of them can be said to be the creative behavior which evokes the sense of beauty from our inside throughout the intuituve knowledge for the aesthetical object of nature or man, not the logical knowledge by the understanding or the intelligence like a research of philosophy or science. Also, the attitude of both toward their characteristics of art-example, imagination, individuality, the lack of practical purpose, union on pluralism, disinterested sympathy, creativity and falsehood. The world expressed in a painting and literature is not a part of real world or its copy, but the one expressed by means of aeshetical experience of man and the particular one elevated throughout the tunel of sensitive cognition. As the result of it, it is its own purpose, perfect only with the "itself" and artistic world which has its own value. In conclusion, though there is a person who asserts that literature cannot be art, it is rather assumed that literature is included within the category of art if considered on the above. objects is not the practical one as a means in the persuit of the scientific sttitude or usefulness which requires making any rule, but the genuine aesthetial attitude-the activilty which enjoys and expresses the beauty as the contemplative attitude which is disinterested sympathetic beyond the interest and desire of man as the main body. Thereofre, both of them include the common.