은유의 연구 : 아리스토텔레스 시학을 중심으로

한인혜 국제문화학회 1990 역사와 사회 Vol.3 No.-

평면 다수 입출력 전력 분배/결합회로의 2 GHz에서의 구조 수정 연구

한용인,조치성,김인석 한국항행학회 2002 韓國航行學會論文誌 Vol.6 No.4

본 논문에서는 하나의 입력과 다수의 출력을 가지는 [10]에서에서 제시한 평면 Taper 형의 전력 분배/결합기를 2GHz대역에서 수정한 구조를 제안한다. 제안하는ㄱ n조의 전기적 특성을 결정하는 파라메터들을 HFSS시뮬레이션을 이용하여 분석하였다. 입력 정합 그리고 각 출력 단에서 출력 신호의 균형과 위상의 선형성을 위해 회로의중앙에 하나의 원형 모양을 애칭 제거하였다. 또 본 논문에서 제안한 구조의 1:2와 1:3의 전력 분배/결합기외 [10]의 구조와 S-Parameter를 비교?분석하였다. 결과적으로 본 연구에서 제시하는 수정된 형태를 적용할 경우 기존의 전력 분배/결합기의 반사손실 특성이 2 GHz에서 20dB이상 개선되었고 대역폭 또한 증가되는 것을 확인하였다. In this paper, tapered shape of multiport power divider/combiner modified for 2 GHz range from the model published by [10] is proposed. Parameters determining electrical property of the circuit structure have been analyzed by HFSS simulation. For input matching, balance of output signals and phase linearity at each output port, one circular hole has been etched out on the circuit surface. 1:2 and 1:3 power dividers/combiners designed by this study have been compared with the same circuits designed by the method of [10] in terms of S-parameters. As a result, it has been found that the modified structure of power divider/combiner have improved return loss more than 20 dB and another 18 dB, respectively, at 2 GHz.

하이퍼큐브 멀티컴퓨터에서 상호 배제를 위한 효율적인 정보 구조

배인한,하숙정 대구효성카톨릭대학교 1997 연구논문집 Vol.56 No.2

Distributed mutual exclusion algorithms have employed two approaches to achieve mutual exclusion and can be divided into two broad classes: token-based and permission-based. Token-based algorithms share a unique token among the hodes and a node is allowed to access its common resources ir it possesses the token. Permission-based algorithms require one or more successive rounds of message exchanges among the nodes to obtain the permission for accessing the common resources. A hypercube architecture has earned wide acceptance in multicomputer systems in the past few years because of its simple, but rich topology. Accordingly, we study distributed permission-based mutual exclusion algorithms for hypercubes, and design a distributed permission-based mutual exclusion uses a new information structure by request set. The new information structure is composed of a subset of lower-triangle configuration form a logical mesh that is embedded into a hypercube. If a node wants to access the common resources, it sends a request message to all nodes in the request set by Lan's multicast algorithm. Once the node receives a grant message from all nodes in the request set, it accesses the common resource. We evaluate our algorithm with respect to minimum round-trip delay, blocking delay, and the number of messages per access to the commom resource.

분산 비디오 서버를 위한 비디오 할당 알고리즘의 설계 및 평가

배인한,배종식 대구효성가톨릭대학교 1997 연구논문집 Vol.55 No.2

In distributed video server where client requests for different video streams may have different probabilities, placement of video streams is an important paramater, because it may result in unbalanced requests to the video servers, and thus to high blocking probabilities of requests. We present a video allocation algorithm to balance traffic load and storage use in a distributed video server environment. Our algorithm achieves load and storage in the video server, and by employing a weighted scheduling algorithm to achieve load balancing. Our algorithm allocates the video streams in a scan fashion to all the video servers. We evaluate the performance of our algorithm through a simulation. Simulation results show that the performance of our algorithm is better than that of Serpanos's algorithm in terms of storage and load balancings and blocking probability.

전자 상거래에서 세션 쇼핑 모델을 위한 효율적인 트랜잭션 프로토콜의 설계 및 평가

배인한 대구효성가톨릭대학교 1998 연구논문집 Vol.58 No.2

Buying and selling of goods or services over the Internet between a consumer and an enterprise is referred to as electronic commerce. The electronic commerce transaction is exchange of goods for money over the Internet. The protocol in electronic commerce is a series of steps required to successfully complete an electronic commerce transaction. Several issues; privacy, anonymity, security, atomicity, and low overhead, have arisen while designing electronic commerce protocols. In this paper, we propose an efficient transaction protocol for session shopping models between an anonymous customer and a merchant whose identity is public, and show that our protocol satisfies the properties of privacy, anonymity, security, atomicity and low overhead.

정신분열병과 Neurotensin 수용체 유전자 다형성의 연합 연구

이유상,김형배,한진희,채영규,이정식,이혜순,주연호,김형섭,최인근,양병환 大韓神經精神醫學會 1999 신경정신의학 Vol.38 No.6

연구목적: Neurotensin(NT)은 NT수용체와 결합하여 그 효과를 나타내는 neuromodulator 혹은 neurotransmitter로서 대뇌에서 도파민의 분비를 조절하는데 중요한 역할을 한다. 근래의 연구에 의하면 NT와 그 수용체는 대뇌에서 항정신병 약물의 효과를 매개하는 것으로 생각되고 있으며 약물치료를 받지 않은 정신분열병 환자의 뇌척수액에서 NT의 양이 적으로 보고되고 있어 이들은 정신분열병과 깊은 관련을 가지고 있을 것으로 추정된다. 최근 NT수용체의 유전자의 3`인접영역에서 정보가치가 높은 4 염기반복 다형성이 발견되어 이를 유전 표지자로 하여 정신분열병과의 연합을 알아보았다. 방 법: 서로 혈연관계에 있지 않은 정신분열병 환자 120명(남자 91명, 여자 29명)과 정상 대조군 106명(남자 84명, 여자 22명)을 대상으로 하였다. PANSS를 사용하여 양성 및 음성을 알아보았다. 말초혈액에서 DNA를 분리한 후에 중합효소연쇄반응을 사용하여 3`인접영역에 있는 4 염기 반복 다형성을 증폭하였고 silver staining한 후에 유전자형을 관찰하였다. chi-square 검증과 Bonferroni`s correction을 사용하여 환자군과 정상 대조군간의 대립유전자 빈도의 차이를 알아보았다. 또한 양성 및 음성 환자군으로 나누어 차이를 알아보았다. 결 과: 총 23개의 대립유전자가 관찰되었으며, 399bp의 대립유전자(A10)의 빈도가 환자군보다 정상대조군에서 통계적으로 유의하게 높았다(χ²=16.49, df=1, p<0.001). 음성 정신분열병 환자군과 정상대조군 사이의 비교에서는 정상대조군의 A10의 빈도가 환자군보다 유의하게 높았다(χ²=21.33, df=1, p<0.001). 성별 비교에서 남자 정신분열병 환자군은 대조군에 비하여 A10의 분포가 유의하게 적었다. (χ²=13.71, df=1, p<0.001) 결 론: NT 수용체 유전자와 정신분열병사이에 음성연합이 관찰되었다. NT 수용체 유전자가 일부 정신분열병의 발병과정에서 확실하지는 않지만 어떤 종류의 보호기능을 할 수도 있다는 것을 암시한다. Objectives: Neurotensin(NT), of which functions are evoked by its interaction with neurotensin receptors(NTR), coexists with mesolimbic dopamine and regulates endogenous dopamine release. Recent studies have shown that NT with NTR exerts neuroleptic-like activity within the central nervous system and may play an important role in the pathogenesis and in the treatment of schizophrenia. We have examined the gentic association between schizophrenia and tetranucleotide repeat polymorphism in the 3-flanking region of the NTR gene to investigate the possible contribution of the NTR gene to the schizophrenia susceptibility. Methods: Among 23 alleles identified, the subjects were 120 patients(male 91, female 29)with schizophrenia and 106 normal healthy controls(male 84, female 22). They were unrelated native Korean. PANSS was used to determine positive or negative subgroup in the schizophrenic patients. Using polymerase chain reaction and polyacrylamide gel electrophoresis, tetranucleotide repeat polymorphism(CCTT and CTT) in the 3`-flanking region of NTR gene was observed. For a comparison of NTR gene`s allelic frequencies between patients with schizophrenia and normal healthy controls, chi-square test and Bonferroni`s correction was performed. Results: The frequency of A10 allele(base pair size=399)was significantly higher in normal healthy controls than schizophrenia(χ²=16.4902, df=1, p<.000). In the comparison between schizophrenic patients with negative symptoms and normal controls, the frequency of A10 allele was significantly higher in normal healthy control subjects than patients with schizophrenia(χ²=21.33, df=1, p<0.001). In the case of male, the frequency of A10 allele of schizophrenia was significantly higher than normal controls(χ²=13.71, df=1, p<0.001). Conclusions: NTR gene was negatively associated with schizophrenia. NTR gene`s tetranucleotide repeat polymorphism may provide some protective function against schizophrenia.

이동 호스트를 갖는 네트워크에서 효율적인 인과 순서화 알고리즘의 설계 및 평가

박규석,김재수,배인한 대구효성가톨릭대학교 응용과학연구소 1998 응용과학연구논문집 Vol.6 No.2

The mobility of hosts causes various challenges and problems in designing distributed algorithm, and traditional causal ordering algorithms are not suitable to mobile hosts. This paper presents a simple and efficient algorithm that all messages are sent and delivered in causal order. Also, the algorithm has the low costs of computation and wireless communication.

가속도 기반 분산 멀티미디어 동기화

노흥태,배종식,배인한 대구효성가톨릭대학교 응용과학연구소 1995 응용과학연구논문집 Vol.4 No.-

Multimedia synchronization techniques are an important field in the implementation of multimedia applications. We study multimedia synchronization schemes and suggest an ac-celeration-based multimedia synchronization scheme. In this scheme, if the slave device of the receiver detects asynchrony between master and slave media, the slave device ac-celerates or decelerates slave media presentation speed.

주문형 비디오 시스템을 위한 장치 대역폭 감소 알고리즘의 성능 평가

박규석,이경숙,배인한 대구효성가톨릭대학교 응용과학연구소 1998 응용과학연구논문집 Vol.6 No.2

Recently technological advances have made multimedia on-demand services, such as movies-on-demand and home-shopping, important to the customer market. One of the most challenging aspect of this type of service is to provide on-demand access, that is, users can view the movie either instanteneously or within a small and reasonable latency upon request. One way to reduce the latency is to simply purchase more disk. A more interesting and more economical approach might be to either attempt to improve the data layout and scheduling techniques or to reduce the I/O demand of each request in service through "sharing" of data between requests for the same object. There are several approaches to reducing the I/O demand on the storage server through sharing. Batching and adaptive piggybacking are studing as general I/O bandwidth reduction policies frequently. In this paper, both batching and simple piggybacking performances are analyzed by a simulation, and the performance between batching and simple piggybacking is compared.

다변량통계분석을 이용한 수질오염총량관리 단위유역별 오염물질 배출특성 분석 -한강수계를 중심으로-

최옥연 ( Ok Youn Choi ),김기훈 ( Ki Hoon Kim ),한인섭 ( Ihn Sup Han ) 한국물환경학회 2015 한국물환경학회지 Vol.31 No.6

The characteristic of the water quality and pollutant discharge was analyzed at the units watershed of the total amount management in Han-river basin, and after classified in a similar area by multivariate statistical analysis, the main trend such as the water quality trend and pollutant discharge characteristic were analyzed. As a result of this study, the density of the pollutant at the unit watershed is not necessarily identified as discharge density, and the primary management watershed and targeted substances were analyzed depending on the operating status of the environmental infrastructure in watershed and the main pollution factor and discharge path per pollutants. As a result of cluster analysis, watersheds were classified into four groups according to discharge characteristics. It will be used when selecting target area of primary management that is appropriate to the characteristics of each river and establishing efficient water quality improvement plans.