양방향 통신에서 TCP 트래픽 모델을 이용한 지연 제어

송선희,나상동 조선대학교 전자정보통신연구소 2003 電子情報通信硏究所論文誌 Vol.6 No.1

본 연구에서는 TCP 트래픽의 ACK를 지연시키는 메커니즘을 제시하고, 제어된 ACK, 흐름은 TCP 활동의 트래픽 특성에 영향을 주는 연구를 한다. 링크 사용 도는 버퍼 점유에 대한 정보를 사용하여 혼잡을 통보할 수 있고, ACK 지연 메커니즘은 다양한 네트워크 노드에서 구현된다. 본 논문에서는 이러한 혼잡을 통해 연결의 공정성 뿐 아니라 고속 TCP는 패킷손실을 효과적으로 예방할 구 있어 우수한 처리량을 실현하고 버퍼 요구 사항을 줄일 수 있음을 입증하기 위해 RTO_(Rr) 모델을 통해 수행된 성능을 알고리즘을 통해 입증했다.

외상성 뇌손상환자의 MMPI Profile예 따른 정신과적 증상

이원희,박민철,오상우,박종호 圓光大學校 醫科學硏究所 1997 圓光醫科學 Vol.13 No.1-2

This study was to investigate psychiatric symptoms of patients with traumatic brain injury in the MMPI profile. 88 patients with traumatic brain injury and 45 normal persons were underwent the MMPI and SCL-90-R. The results were as follows. 1) The MMPI profile of patients with traumatic brain injury were different from normal persons. 2) Traumatic brain injury patients were divided into neurotic profile and psychotic profile groups in the MMPI. 3) Group with psychotic profile of traumatic brain injury in the MMPI showed elevated paranoid ideation and psychoticism subscales of SCL-90-R. 4) Group with neurotic profile of traumatic brain injury in MMPI showed an elevated somatization subscale of SCL-90-R. 5) In the scores of GSI and PSDI of the SCL-90-R, group with neurotic profile of traumatic brain injury in the MMPI were higher than normal persons, but lower than the group with psychotic profile of head trauma. Finally, this study of the MMPI profile of traumatic brain injury showed 7-8-6-2 profile and 1-3-2 profile. The group showing 7-8-6-2 profile presented both psychotic and neurotic symptoms and 1-3-2 profile showed an elevated somatization subscale.

청정 지역 강우의 분석 : 1997-1998년 한라산 1100 고지와 제주시 강우의 특성 Characteristics of Rainwater at 1100 Site of Mt. Halla and Cheju City in 1997-1998

강창희,김원형,홍상범,이기호,홍민선,심상규 濟州大學校 基礎科學硏究所 2000 基礎科學硏究 Vol.13 No.1

The rainwater samples were collected from the 1100 Site of hlt. Halla and Cheju city during the period of March in 1997 to August in 1998. and the major soluble ions were analyzed. The confidence of analytical data was confirmed by using the comparison methods such as ion-balance, electric conductivity and acid fraction. all of which correlation coefficients were above 0.94. The ionic strengths lower than 10^(-4)M, the basis for the pure rainwater, were found in 47% and 38% at 1100 Site and Cheju city, respectively. The precipitations in Cheju city were more influenced by the oceanic effect than those in 1100 Site. The acidity contribution was mainly by SO_(4)^(2-) and NO_(3)^(-) in both areas. and the organic acids have contributed to the acidity with only 5-7%. The neutralization factors by NH_(3) were about 46% at both 1100 site and Cheju city, whereas those by CaCO_(3) were 11% and 15% at 1100 site and Cheju city respectively, and the free acidity were both about 35% in average. From the MSA analysis. it was found that the air in Cheju island has been influenced by the pollution from the other areas. The sources of the rainwater components in 1100 Site and Cheju city were also studied with a factor analyzing way and the most probable factors were found to be anthropogenic, oceanic, and soil-sourced. The results of multiple regression analysis have shown that SO_(4)^(??) was dissolved mostly in the form of H_(2)SO_(4), CaSO_(4) and (NH_(4))_(2)SO_(4). and NO_(3)^(-) was in the form of HNO_(3), Ca(NO_(3))_(2) and NH_(4)NO_(3).

Cds-SiO₂-Si의 電氣的 特性

南尙熙,金末文 嶺南大學校附設 基礎科學硏究所 1981 基礎科學硏究 Vol.1 No.-

Introducting a passivating layer of SiO₂at the CdS-Si junction is found to improve the I-V characteristics of the heterodiodes. Studies indicate that the reverse-bias characteristics of these structures are determined primarily by the filling and unfilling of interface states at the Si-SiO₂ interface. This is substantiated by the temperature dependence of these characteristics. Reverse-bias C-V characteristics show abrupt junction like behavior, also controlled by the interface-state charge. Under forward-bias, tuneling through the oxide is responsible for conduction.

무선 통신망에서 보안 인증 프로토콜 절차

김동국,김희철,나기창,배철수,나상동 조선대학교 전자정보통신연구소 2002 電子情報通信硏究所論文誌 Vol.5 No.1

Recently, We are using B-ISDN(Broadband Integrated Services Digital Network) with backbone based on ATM(Asynchronous Transfer Mode), the rapid incresement of user for Mobile Computing application and conversion to radio ATM networks had brought by mobile phone, portable computer spread using and extension of multimedia service brought multimedia mobile communications service to increasing the demands. ATM networks gives communication services based on protocol stack with communized the features of wire ATM-network on the whole' structure and has structure supported migratory in radio section. In this paper, we are going to look at services of authentication, access control, confidentiality, integrity and key exchange which are used with solution for privacy detection from an intrusion of persons privacy by illegal intrusion and every threat to user and service suppling company. And we are studying existing mechanism about security service, authentication protocol and data integrity supply in connection with packetization and depacketization about protocol. We are supposed to look at the features of existing wire ATM network, security service application in three plane in chapter 2, the features and basic structure about wireless ATM network which is extended to radio section based on wire ATM comparison and analysis about authentication protocol applied to security constituent matters which should improve in chapter 3. we are propose about security authentication protocol in control plane, one of wireless ATM protocol reference model in chapter 4, results and study direction about proposed contents in chapter 5.

PWR에 使用되는 우라늄의 精製 및 濃縮에 關한 硏究(Ⅰ) : 國內産 우라늄 鑛石에서 黃酸浸出과 溶媒抽出에 依한 우라늄精製 Uranium concentration from the Domestic Uranium ores by Sulphuric Leaching and Solvent Extraction

金鍾一,朴永錫,丁梧鎭,李秀一,金熙峰,裵相龍,秋相根 조선대학교 동력자원연구소 1986 動力資源硏究所誌 Vol.8 No.2

This research was undertaken to study the mineralogy, and the optimum conditions for uranium leaching and extraction from the Okchon system graphite ores in the Kumsan areas. A research has been needed to study the refining process for the effective leaching and extraction from uranium ores in the Kumsan area which has more uranium deposits than any other area. By the mineralogical study with the powder X-ray diffraction method, primary uranium minerals are uraninite, brannerite, coffinite etc. and secondary uranium minerals are uranocircite, niobium uranium oxide, carnotite, toberite etc. has developed in the studied area uranium ores. The volumetric ratio of the primary and the secondary uranium minerals are approximatly 1 : 5. In this experiment, the uranium-bearing graphite in the Kumsan area was milled with a jaw crusher and ballmill. This milled uranium-bearing graphite was leached by sulfuric acid and from this sulfuric acid-leaching solution, uranium was extracted by Amberlite LA-1 in kerosene. The results are as follows: (1) The optimum results in the leaching process are : acidity pH = 1.0, temperature : 25.0℃, particle size : -80+120 mesh, leaching time : 24 hours, pulp density : 50% solid (2) A good pH range for uranium extraction was between 0.8 and 1.3. (3) The uranium distribution coefficient increases in direct proportional to the concentration of the Amberlite LA-1 as extractive agent. (4) The optimum time at 200rpm was 15 minutes.

제헌국회기 ‘성인회’의 결성과 활동

박상희 ( Park Snag-hee ) 동아대학교 석당학술원 2018 石堂論叢 Vol.0 No.72

제헌국회 소장파는 이승만 정권 초기 진보적이며 저항적인 세력으로 항상 언급되지만, 실상 이들에 대한 연구는 그리 많지 않다. 이 글은 제헌국회 소장파의 핵심 세력이었던 성인회의 결성 과정과 이들의 활동을 통해서 소장파의 성격을 살펴보고자 하였다. 성인회는 김약수 중심의 신당 결성을 표방하며 결성된 원내 조직이었다. 그러나 성인회는 김약수의 정당으로 발전하지 못했다. 이는 내부적으로 이념적, 조직적 결속이 불완전하였기 때문이다. 결속력이 강하지 못했던 이유는 최초의 결집과정과 관련이 있다. 이들은 외군철수에 대한 공통적 동의를 기반으로 모였지만, 이들의 결집에는 신익희, 지청천 등의 국회 내 주요 세력의 재편에 따른 대응작용인 측면도 있기 때문이다. 이 과정에서 단정 추진 세력들도 참여하게 되었고, 반공주의를 둘러싼 입장의 차이도 있었다. 이러한 이질성이 외군철수라는 민족주의적 이슈로 봉합된 상태였다. 이런 측면에서 볼 때, 성인회는 해방공간의 중도세력과 조직적 계승관계가 있다고 하기 어렵다. 외군철수, 남북 협상, 농민적 농지개혁 등 내용의 측면에서 중도세력의 입장을 계승한 측면은 있다. 성인회는 외군철수라는 민족주의적 이슈를 중심으로 원내에서 세력을 확장했다. 이를 통해 동인회와 통합하여 동성회를 결성하였고, 김구, 김규식 등 원외의 남북협상 세력과 접근하는 경향을 보였다. 동시에 성인회는 농지개혁의 실현을 위해 원내의 제 세력, 나아가 이승만과도 공동보조를 취하였다. 이런 적극적인 활동과 영향력 확대는 원내 이승만 세력의 입지를 위협하였고, 결과적으로 국회프락치사건으로 희생되었다. The ‘Young members’ in the Constitutional Assembly are always referred to as progressive and defiant forces. But, in fact, there are not many studies of them. This article is intended to examine the political inclination of the ‘Young members’ through the activities of ‘Sungin Hway’, which was a key player. ‘Sungin Hway’ was a group of parliamentary men to form a new party with Kim Yak-soo. However, it did not develop into Kim's party. This is because ideological and organizational ties were incomplete. The reason for the lack of cohesion is related to the initial cohesion process. Their unity is a response to the reorganization of major powers in the National Assembly, including Shin Ik-hee and Ji Chung-cheon. In the process, differences in views on anti-Communism were covered by nationalistic issues, and those who were seeking to establish a limited government in South Korea joined the group. In terms of organization, it had no relationship with the mid-of-the-roader. in liberation period In terms of content, it has relationship with the mid-of-the- roader. ‘Sungin Hway’ worked to withdraw foreign troops, reunite the two Koreas, and land-reform. ‘Sungin Hway’ expanded its influence through the nationalistic issue such as withdrawal of foreign troops. Through this activity, ‘Sungin Hway’ integrated with ‘Dongin Hway’ to form ‘DongSung Hway’. They have tended to approach inter-Korean negotiators such as Kim Koo and Kim Kyu-sik. At the same time, ‘Sungin Hway’ cooperated with all the groups in Congress and even Syngman Rhee, in order to realize the land-reform. The expansion of influence through these activities threatened the position of Rhee Syng-man in the National Assembly, which resulted in their sacrifice in the parliamentary espionage incident

The Analysi of the Muscle Activity in Individual Work Sections of the Sowing Process

Snag Mi Lee(이상미),Gyung Mee Gim(김경미),Seon Hee Jeong(정선희),Sun Jin Jeong(정선진),Yoonah Jang(장윤아),Kyung Sook Han(한경숙),Hyun Jin Jang(장현진) 인간식물환경학회 2017 인간식물환경학회지 Vol.20 No.4

Research on the current status of shellfish aquaculture on the south coast in Korea

Hee-Jung Lee,Kyoung-Duck Kim,Si-Woo Lee,Young-Hyun DO,Hyun-Sil Kang,Snag-Jun Lee,Jae-Kwon Cho 한국수산과학회 양식분과 2021 한국수산과학회 양식분과 학술대회 Vol.2021 No.4

A Regioselectio Synthesis of ${\beta}-Lactones$; Bromolactonization of 2-Substituted-1-Cyclohexenyl-1-acetic acid

Jew, Snag-Sup,Lee, Hee-Soon,Koo, Bon-Am The Pharmaceutical Society of Korea 1994 Archives of Pharmacal Research Vol.17 No.5

Bromolactonization of 2-substituted-1-cyclohexenyl-1-acetic acids with 1, 3-dibromo-5, 5-dime-thylhydantoin 9DBH) and potsssium tertiary butoxide (t-BuOK0 in anhydrous DMF was found to proceed in a highly regioselective manner. The reaction predominantly resulted in the formation of ${\betha}-lactones$ (greater than 96%).