스페인어의 전치사 de("of") 구문에 관하여

서소영 대한언어학회 2000 언어학 Vol.8 No.1

Seo, So Young. 2000. Constructions of the preposition DE("OF") in Spanish. Linguistics 8-1, 255-274. There has been a hypothesis of the predicate Movement in the generative grammar recently relating to the construction of the preposition DE/OF. In this paper, we tried to reanalyze basically the preposition DE/OF as a type of the copular, applying the syntactic phenomenon which appear in the SN, for example, the Movement of the predicate from the SC, to the constructions possessives TENER/HAVE. (Chonbuk National University)

CMP 공정의 재현성 확보를 위한 공정제어 범위의 결정

서용진,정소영,김철복,박성우,이경진,김기욱,박창준 대불대학교 2002 大佛大學校大學院 硏究論文集 Vol.- No.1

To achieve the ULSI goals of higher density and greater performance, STI(shallow trench isolation)-CMP(chemical mechanical polishing) process has been attracted. Recently, the direct STI-CMP process without the conventional complex reverse moat etch process has established by using slurry additive with the high selectivity between SiO2 and Si3N4 films for the purpose of process simplification and in-situ EPD(end point detection). However, STI-CMP process has various defects such as nitride residue, torn oxide and demage of silicon active region. Also, it was difficult to assure the suitable process margin in the STI-CMP process. To solve these problems, in this paper, we discussed to determine the control limit of process, which can entirely remove the oxide on nitride film from the most area of high density as reducing the damage of dense moat area and minimizing dishing effect in the large field area. We, also, evaluated the wafer-to-wafer thickness variation and the day-by-day reproducibility of STI-CMP process after repeatable tests.

편도체 기저외측핵의 AP5 투여가 상승된 경악반응의 습득에 미치는 영향

서미숙,조소현,김기석,이만영 한국심리학회 한국심리학회지 생물 및 생리 Vol.5 No.1

본 연구는 고전적 공포조건화에 관여하는 장소로 알려진 편도체의 기저 외측핵에 장기상승작용(Long-Term Potentiation: LTP)의 생성을 차단하는 약물인 MNDA (N-methyl-D-aspartate)길항제 AP5를 미세주입함으로써 시각적 조건자극(CS)을 사용한 경우에, 상승된 경악 반응의 습득이 차단되는지를 보고자 하였다. 동물은 AP5-AP5, AP5-식염수, 식염수-AP5, 식염수-식염수 집단으로 나누어서 CS-US 배쌍직전에 AP5나 식염수를 주입한 후 훈련시켰다고 다시 검사직전에 AP5 혹은 식염수를 주입하였다. AP5-AP5집단과 AP5-식염수집단은 상승된 경악반응을 보이지 않았고, 식염수-AP5, 식염수-식염수 집단은 상승된 경악반응을 보였다. CS-US배쌍 직전에 주입한 AP5는 상승된 경악반응을 차단하였고, 검사직전에 주입한 AP5는 상승된 경악반응을 차단하지 않은 결과는 AP5가 습득을 차단했으되 그 표현에는 영향을 미치지 않았다고 해석된다. 그리고 AP5-AP5, AP5-식염수 집단이 상승률에서 유의미한 차이를 보이지 않았으므로, 상승된 경악반응의 차단이 상태의존적 인출 실패에 기인한 것이 아니고, AP5 자체의 약효때문임을 알 수 있다. It has been known that the amygadala is the neural substrate for conditioned fear as well as unconditioned fear. Among the substructures of amygdala, the basolateral nucleus where CS and US inputs converge and LTP occurs, contains high densities of NMDA receptors and so seems to have a critical role in synaptiplasticity. NMDA antagonist, AP5 prevent induction of Long-term potentiation, but not expression of LTP. LTP is an activity dependent enhancement of synaptic efficacy and is regarded the psysiological mechanisms that might underlie learning and memory. So this experiment was done to investigate what effect AP5 injection to the basolateral amygdala on the acquisition and expression of the fear conditioning, using the fear potentiated Startle paradigm. Animals were allocated to AP5-AP5, AP5-saline, saline-AP5, saline-saline groups. AP5 or saline was injected just before conditioning and testing. The re sult is that AP5-AP5, AP5-saline group didn't show the potentiated startle, comparative to the saline-AP5, saline-saline group, and AP5-AP5 group is not significantly different from AP5-saline. So we conclude that AP5 blocked the acquisition but not expression of conditio-ned fear-potentiated startle and convince that the blocking is not due to state-dependent retrieval failure.

Apriori 알고리즘을 이용한 적합한 정보 Profile 생성 기법

소현경,서영훈 충북대학교 컴퓨터정보통신 연구소 2004 컴퓨터정보통신연구 Vol.12 No.1

웹이 발달하면서 검색 데이터 양이 급격히 증가하고 검색 결과도 방대해 지므로 효율적인 검색이 불가능하게 되었다. 따라서 웹 기반 정보검색 시스템에서 사용자의 요구에 적합한 문서들을 제공하기 위하여 질의어 확장에 관한 연구가 활발히 이루어지고 있다. 기존의 시스템은 사용자가 요구하는 질의어에 관한 정보가 충분하지 못하였으므로 질의어의 출현 빈도수에 의존하여 적합한 문서의 우선순위를 결정하였으며 임계치가 검색 결과에 큰 영향을 미치고 있다. 또한 질의어와 유사한 용어를 사용한 문서일 경우 적합한 문서로 선택하지 못하는 용어 불일치 문제도 가지고 있다. 따라서, 본 논문에서는 용어 불일치 문제를 해결하고, 사용자가 원하는 질의어에 대해 다양한 정보를 포함하고 있는 문서를 선택하기 위하여 자동적인 질의어 확장 방법을 제안한다. 질의어 확장을 위하여 백과사전 정보와 Apriori 알고리즘을 이용하여 적합한 정보 프로파일을 생성하였다. It is impossible to efficiently search the web document because of the increased searching data and searched results. Therefore, to provide the relevant document in web-based information search system, there are many researches for query expansion. Because the query-related information was not enough, previous systems determined the priority of the relenvant document using the term-frequency of query, and used the threshold as the main factor for searching. And if the documents included the word similar to the query, these documents are not determined as relevant document in previous system. this problem is called the vocabulary mismatch problem. In this paper, we solve the vocabulary mismatch problem, and propose the query expansion method to select the documents which include the various information for query. To expand the query, we generate the relevant information profile using the encyclopedia information and Apriori algorithm.

여수지역 약수의 수질 특성에 관한 연구

서성규,서원술,김인수,이소영 여수대학교 1998 論文集 Vol.13 No.2

This study was performed to investigate the annual variation for quality and characteristics of natural mineral water at 7 sites in Yosu area. Samples were collected at spring in 1996, 1997 and 1998. According to the geological effect, the content of F was showed higher at Granite area, and the range of annual mean value of F was 0.10∼0.15mg/ℓ. The highest concentration of NO3-N was detected 11.20mg/ℓ at Seokchonsa, and this value was exceeded the drinking water quality standard. Also, the range of minerals was Na: 6.6∼32.7mg/ℓ. K: 0.3∼4.5mg/ℓ, Ca: 1.4∼13.2mg/ℓ, Mg: 0.6∼3.7mg/ℓ respectively. The K and O values were used as an index of healthy and delicious water. As a result, all natural mineral waters were delicious water. Especially, Yeongokje was very near to the healthy and delicious water.

인터넷 상에서 계층화된 비디오의 멀티캐스트

서주하,유소영 강원대학교 정보통신연구소 2000 정보통신논문지 Vol.4 No.-

Recently, network capacity is increasing very fast and the techniques for the processing multimedia data is developing. Thus multicast distribution of video is an importance component of Intenet. We propose a rate control method for multicasting layered video data over the Internet. We are agents that compile the informations of states in their domains and propagate them upward. Each agent can give the state of his domain and determine whether add-experiments can be performed. So we can achieve efficient rate control by reducing the frequency of add layer experiments and drop layer. We evaluate the performance of our method by simulation. And our simulations show the good results of our method.

대기압 정보획득을 위한 상층기상관측기 구현

서정호,황소영,김영호 한국공작기계학회 2002 한국공작기계학회 춘계학술대회논문집 Vol.2002 No.-

일기예보나 기상예측 등을 위해서 필요한 대기압, 온도, 습도와 같은 기상정보 중에서 대기압의 변화를 측정하기 위한 고층기상관측기를 설계, 구현하였다. 이를 위해 현재 구현되고 있는 고충기상관측기의 구조와 특징을 파악, 분석 후 대기압 사용센서를 사용하여 기존의 고층기상관측기와 비교해 구조적으로 간단하고 저가에 구현할 수 있도록 하였다.

반도체-원자 초격자의 광전자 특성

서용진,정소영,박성우 대불대학교 2002 論文集 Vol.8 No.1

Optoelectronic characteristics of the superlattice as a function of deposition temperature and annealing conditions have been studied. The nanocrystalline silicon/adsorbed oxygen superlattice formed by molecular beam epitaxy (MBE) system. Consequently, the experimental results of superlattice with multilayer Si-O structure showed the stable photoluminescence(PL) and good insulating behavior with high breakdown voltage. This is very useful promise for Si-based optoelectronic and quantum device as well as for the replacement of silicon-on-insulator(SOI) in ultra high speed and lower power CMOS devices in the future, and it can be readily integrated with silicon ULSI processing.

HSS STI-CMP적용을 위한이중 패드의 최적화

서용진,박성우,김철복,정소용,이경진,김기욱,박창준 대불대학교 2002 大佛大學校大學院 硏究論文集 Vol.- No.1

As the device geometry shrinks to the deep submicron region, chemical mechanical polishing(CMP) planarization become a more essential technique of advanced ULSI process. Also, CMP process was required for the global planarization of inter-metal dielectric(IMD), inter-level dielectric(ILD) layers and interconnections with free-defect. Especially, the complete global planarization of IMD, ILD and interconnections can be achieved only with the CMP process. However, as the IMD and ILD layer gets thinner, several problems were found in the CMP process. It does have various problems such as dishing effect, torn oxide defects and nitride residues in oxide. So, it leads to severe circuit failure, which affects yield. In this paper, we studied the characteristics of polishing pad, which can apply STI-CMP process for global planarization of multilevel interconnection structure. Also, we investigated the effects of different sets of polishing pad, such as soft and hard pad. As an experimental result, hard pad showed center-fast type, and soft pad showed edge-fast type. Totally, the defect level has shown little difference, however, the counts of scratch was defected less than 2 on JR111 pad. Through the above result, we can select optimum polishing pad, so we can expect the improvement of throughput and device yield.

신뢰성있는 멀티캐스트 통신에서의 흐름 제어

유소영,서주하 강원대학교 정보통신연구소 1999 정보통신논문지 Vol.3 No.-

In this paper, we propose flow control scheme for reliable multicast communication. When packet loss is occurred by buffer overflow on the transmission path or receivers, the receivers detect the loss and send the NAK. In this case NAK-based retransmission is said to be effective because it can avoid implosion of NAK packets. Buffer overflow in receivers may occurred constantly, if the transmission rate is not decreased. So the flow control should be imposed to prevent further overflow. In this paper, we proposed a flow control scheme for NAK-based flow control scheme in reliable multicast communications. When the NAK are generated by receivers, sender decreases the transmission rate preventing the fall of throughput by excessive decrease. We show that the proposed scheme improves throughput compared with the case of no flow control.