• 한국정보통신학회논문지
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• 제16권3호
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• pp.571-578
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• 2012

본 논문에서는 크게 두 가지 사항에 대해서 제안하고자 한다. 첫 번째는 논리합성을 위한 제약조건 방법에 대한 것이고, 두 번째는 효율적인 논리합성방법에 대한 것이다. 논리 합성은 주어진 제약조건(constraint)을 최대한 만족 시키면서 논리 사상과 최적화 등을 통하여 RTL(register transfer level) 코드로부터 게이트-수준의 네트리스트를 얻는 과정이다. 논리합성의 결과는 주어진 제약조건과 합성 방법에 매우 종속적이다. 이들에 의해서 설계의 면적 및 타이밍이 크게 변화하므로 우리는 제약조건과 합성방법을 철저하게 고려하여야 한다. 본 논문에서는 논리합성을 하는 과정에서 실제로 고려해야하는 사항들에 대해서 경험적이고 실험적인 결과를 바탕으로 혼합방식의 논리합성 기법을 제안한다. 제안된 기법을 이용하여 약 65만 게이트의 하드웨어 자원량을 사용하는 회로에 적용시켜본 결과로 상향식 방법에 비해서 합성 시간이 약 47% 감소하였고, 하향식 방법에 비해서 타이밍 특성이 우수하였다.

• 한국통신학회논문지
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• 제36권8A호
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• pp.702-711
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• 2011

본 논문은 IEEE 802.15.4 네트워크에서의 에너지 효율을 향상시키기 위해 위한 은닉 노드들 간의 신호 충돌 문제를 해결하기 위한 은닉 노드 인식 그룹핑(HAG: Hidden-Node-Aware Grouping) 알고리즘을 제안한다. HAG 알고리즘은 노드들 간 수식 신호의 에너지를 이용하여 은닉 관계에 있는 노드들을 파악하고, 그들을 서로 다른 그룹에 배정하는 방식으로 그룹핑을 완성하고 그룹별로 신호 전송 주기를 할당한다. HAG 알고리즘의 정확한 성능 측정 및 예측을 위해 다양한 네트워크 상황을 고려하여 처리량에 대한 분석적 성능 모델을 제시한다. HAG 알고리즘을 사용하지 않은 네트워크 환경에서는 은닉 관계가 있는 노드들의 수가 증가함에 따라 처리량이 급속히 저하되지만, HAG 알고리즘을 적용하면 이와 같은 성능 저하를 예방할 수 있음을 분석적 성능 모델과 더불어 시뮬레이션 결과를 통하여 확인하였다.

• The Journal of Korean Physical Therapy
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• 제14권4호
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• pp.266-273
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• 2002

Carpal Tunnel Syndrome(CTS) is a common entrapment neuropathy of the median nerve at the wrist. An Electrophysiologic study has been widely used for the diagnosis of carpal tunnel syndrome. The subjects of this study were 48 cases (88 hands) with clinically suspected carpal tunnel syndrome who underwent electrodiagnostic examination from Jan 1, 2001 to Sep 30, 2001, The results were as follows: 1. Among 48 persons with a clinically suspected carpal tunnel syndrome, 40 patients were female 83.33$\%$ and the patients who are above 60 years old were 37.50$\%$. 2. Electrodiagnostic results were 22 cases (45.84$\%$) with bilateral carpal tunnel syndrome and 10 cases (20.83$\%$) with normal. 3. Physical findings consisted of tingling sensation in 48.86$\%$ of the involved hands, positive Phalen's Sign in 20.46$\%$ of them, thenar atrophy in 15.91$\%$ of them, and weakness in 14.77$\%$ of them. 4. Electrophysiologic studies showed a decreased sensory conduction velocity in 20 cases (22.73$\%$) of total hands, a prolonged latency in 3 cases (3.41$\%$) of them, abnormal sensory and motor fiber in 33 cases (37.50$\%$) of them, and normal in 27 cases (30.68$\%$) of them. Considering above results, we had better make a diagnosis precisely the patients with clinically suspected carpal tunnel syndrome through subjective symtoms, physical examinations, and electrophysiologic studies.

• The Journal of Korean Physical Therapy
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• 제31권6호
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• pp.358-362
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• 2019

Purpose: We investigated the difference in injury of the corticospinal tract (CST) and the spinothalamic tract (STT) in patients with putaminal hemorrhage, using diffusion tensor tractography (DTT). Methods: Thirty one consecutive patients with PH and 34 control subjects were recruited for this study. DTT scanning was performed at early stage of PH (7-63 days), and the CST and STT were reconstructed using the Functional Magnetic Resonance Imaging of Brain (FMRIB) Software Library program. Injury of the CST and STT was defined in terms of the configuration or abnormal DTT parameters was more than 2 standard deviations lower than that of normal control subjects. Results: Among 31 patients, all 31 patients (100%) had injury of the CTS, whereas 25 patients (80.6%) had injury of the STT: the incidence of CST injury was significantly higher than that of STT (p<0.05). In detail, 20 (64.5%) of 31 patients showed a discontinuation of the CST in the affected hemisphere; in contrast, 14 patients (45.2%) of 31 patients showed a discontinuation of the STT in the affected hemisphere. Regarding the FA value, 6 (19.4%) of 31 patients and 2 (6.4%) of 31 patients were found to have injury in the CST and STT, respectively. In terms of the fiber number, the same injury incidence was observed in 11 patients (35.5%) in both the CST and STT. Conclusion: The greater vulnerability of the CST appears to be ascribed to the anatomical characteristics; the CST is located anteriorly to the center of the putamen compared with the STT.

• 응용통계연구
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• 제25권1호
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• pp.15-27
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• 2012

본 논문에서는 KOSPI 시가총액기준 상위 4종목(삼성전자, 현대차, 현대모비스, POSCO)의 고빈도 거래 데이터를 바탕으로 일중 수익률의 실현변동성과 시장미시구조잡음에 대해 연구한다. Volatility signature plot을 통해 실현변동성(Realized Variance; RV)과 편의수정 실현변동성($RV_{AC_1}$)의 편의를 확인하고 시장미시구조 잡음의 특징을 실증적으로 파악한다. 또한, 잡음 대 신호비(Noise-to-Signal Ratio; NSR)를 사용하여, 평균제곱오차(Mean Square Error; MSE) 기준의 실현변동성(RV)과 편의수정 실현변동성($RV_{AC_1}$)의 최적 추출 빈도수를 추정해본다.

• 보건행정학회지
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• 제15권2호
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• pp.16-36
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• 2005

Due to the existence of asymmetry of information between doctor and patient, it has been believed that doctor might affect patient's decision making process of purchasing medical care. Based on this notion, doctor's reimbursement method has been suggested as an effective policy device of improving efficiency of patient's medical care use by way of its affecting doctor's practice pattern. By using the Community Tracking Study (CTS) household and physician data set, which includes not only various information on patient's medical care use, but doctor's practice arrangements and sources of practice revenue, this paper investigates the effect of community doctor's characteristics of reimbursement method on community patient's medical care use under the control of patient's socio-demographic characteristics and community doctor's practice type. In the process of estimating econometric model, the endogeneity problem of individual health insurance purchase was corrected by using 2818. And due to the existence of sample selection problem, Heckman's two-step estimation method was used for strengthen the robustness of estimation which was adversely affected by sample selection problem The empirical results show that as the average value of community doctor's portion of practice revenue determined by prospective method out of total revenue increases, the community patient's total out-of-pocket medical cost decreases. This results suggest, as doctor's practice revenues are mainly determined by prospective method, such as capitation, doctors would be more conscious about practice cost, which might affect doctor's practice pattern and by which his/her patient's use of medical care would decrease.

• 한국정보과학회논문지:소프트웨어및응용
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• 제28권10호
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• pp.732-742
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• 2001

컴퓨터 분야에서 에이전트의 개념의 전자 상거래, 정보 검색과 같은 많은 어플리케이션에 응용되어 중요시되고 있지만, 소프트웨어 테스트 분야에 에이전트의 개념이 적용되는 것은 드문 일이었다. 테스트 에이전트 시트템 (TAS)은 에이전트 개념을 소프트웨어 테스트 분야에 적용한 새로운 도구로, 'User Interface Agent', 'Test Case Selection & Testing Agent'그리고'Regression Test Agent'로 구성되어 있다. 이들 세개의 에이전트들은 각각 지능성을 나타내는 규칙들을 가지고 객체 지향 프로세스를 딸라 자율적으로 테스트를 진행한다. 이 시스템은 두 가지 측면에서 장점을 가지고 있다. 첫째는 자율적으로 테스트 진행시켜 테스터의 간섭을 최소화한다는 것이고 둘째는 지능적으로 중복이 없고 일관성이 있는 효율적인 테스트케이스를 선택하여 테스트 시간을 감소시키면서 오류검출능력은 향상된다는 것이다. 본 논문에서는 사례를 중심으로 실행과정을 기술하여 TAS를 구성하는 세 개의 에이전트들의 자율적인 행동으로 테스트가 진행되는 것을 보여 TAS가 테스트의 간섭을 최소화한다는 것을 보인다. 그리고 4가지유형의 실험을 수행하여 테스트 시간의 단축과 오류 검출 효과향상을 기술한다.

• 화약ㆍ발파
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• 제15권3호
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• pp.14-19
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• 1997

Koreans have emphasized education as the primary means to reconstruct our country means to reconstruct our country after two catastrophic events-the Japanese occupation and the Korean War(1950-1953). A Strong belief- in education coupled with sheer deter-mination spurred the period of industrial and eeonomic development that started in the early 1970-'s. The "can-do" attitude of the general public was matched and aided by small S & T communities. Scientists and engineers provided the neeessary expertise to manufacture goods and process the many raw materials imported from overseas. After nearly three decades of reconst-ructing our completely devastated country, Korea has become a modern, cosmo-politan, fast-paced and dynamic country. In order to further increaser our manufac- turing capabilities and double the per-capita income by the beginning of the 21st century, we must improve productivitiy and encourage creatitivity in all sectors of our country. The S & T community's efforts in research and development. education, and interna-tional cooperation will be invaluable in determining our direction and reaching these goals. The general public is eager to peacefully unite our foreign powers since 1945. Toward that end. members of the S & T community are willing to coope-rate with our north Korean counterparts in all areas of S & T with the exception of defense related endeavors. Establi-shing scientific ties with north Korea will result in mutual economic benefit and greater regional stability in East Asia. In particular. scientists and manu-facturers in each province are eager to initiate cordial and professional relation-ships with north Korea in the hopes of securing these benefits. The Korean Federation of Science and Technology Societies(KOFST) has played an important role both in developing S & T policies, and in gostering the frowty of S & T societies. A non-governmental umbrella organization composed of over 251 professional societies, KOFST facili-tates the transfer of research outcomes and technology from research institutions to the various industries. KOFST also seeks to increase cooperation between the countries of the Pacific Rim. As evidence of that, we have pursued joint research and industrial ventures with China. Established projects include those on environmental conditions in the Yellow Sea, and improvement of aircraft manufacturing, telecommunica-tion equipment, and agricultural produ-cts. Increased cooperation between the Pacific Rim countries, particularly in S & T, would foster social and economic development for the region as a whole.

• 대한한방부인과학회지
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• 제28권4호
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• pp.65-76
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• 2015

Objectives : This study is to report the effect of Korean medical treatment on a patient suffered from carpal tunnel syndrome (CTS) occurred in pregnancy and worsened after birth. Methods : We treated the patient diagnosed as carpal tunnel syndrome by Korean medical treatment such as acupuncture, pharmacopuncture and herbal medicine at ⃝⃝Hospital of Korean Medicine from July 31th 2015 to August 6th 2015. And we evaluated changes of symptoms by Visual Analog Scale (VAS), Tinel sign, Phalen’s test, and Digital Infrared Thermographic Imaging (DITI). Results : 1. Through Korean medical treatment, postpartum carpal tunnel syndrome was significantly improved. VAS was decreased from 4 to 2, Phalen’s test was manifested from 10 seconds to 26 seconds and Tinel sign was changed from positive to negative. 2. We compared the gap of temperature between palm and forearm before and after Korean medical treatment through DITI. The temperature on the right side was changed from 0.74℃ to 1.01℃ and the left one from 0.63℃ to 1.01℃. Conclusions : This case report shows that Korean medical treatment is useful to treat pregnancy-related carpal tunnel syndrome worsened after birth.

• 정보관리학회지
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• 제8권1호
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• pp.78-99
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• 1991

본 연구는 전자신문인 한경 KETEL의 기사 전문을 대상으로 키워드를 자동 추출하는 자동색인 시스팀을 구축한 것으로서 한글의 형태적 특성을 이용한 언어학적 분석기법을 적용해서 키워드 화일을 생성하는 법을 제시하였으며, 불용어리스트 조사표 용언인식표의 작성법을 상세히 기술했다. 본 연구에서 얻어진 결론은 다음과 같다. 첫째, 형태소 분석을 통한 자동색인 기법으로 만족할 만한 키워드를 추출할 수 있었다. 둘째, 아직까지는 컴퓨터에 의한 한글의 구문분석과 의미분석이 완전하지 못하므로 자동색인으로 추출된 색인어를 색인자가 조절함으로써 색인의 성능을 향상시킬 수 있었다. 셋째, 이 시스팀에서 만들어진 약 20,000어 정도의 키워드 화일은 향후 디소러스 작성에 기본 자료로 사용할 수 있다. 넷째, 본 시스팀에서는 역순사전을 활용해 조사표와 용언인식표 작성법을 제시하였는데, 이는 여러 자동색인 시스팀 설계에 적용될 수 있을 것이다.