네트워크 통신 보안을 위한 암호화 조건부 접속시스템

박남철,이철형,최명수,김경호,이성로 木浦大學校 應用科學硏究院 2001 應用科學硏究誌 Vol.1 No.-

We can improve encryption speed at the home networking which transmit high density information. In this paper, We applicate DES encryption algorithm in the proposed encryption chip which dose operation that encrypts with block of 64 bits. And we improved key problems about transmitting external key by the conditional contact algorithm which solves the problem about periodical refresh in the symmetric algorithm with public key structure.

스마트 안테나에서 블라인드 기법을 이용한 Two Dimensional RAKE 수신기

박형준,이철형,최명수,김경호,이성로 木浦大學校 應用科學硏究院 2001 應用科學硏究誌 Vol.1 No.-

Smart antennas technique is the scheme that focuses the signal on the desired user using array antennas. Therefore, the scheme can dramatically improve performances in conventional mobile communication systems. The scheme is the newest technique for beamforming. Its specific function combines antenna arrays with digital signal processing techniques that can control signal direction. Now, the scheme is known as the future generation core technique in communication provider communities. In this paper, we propose two dimensional rake receiver based on blind schemes in smart antennas and then compare the performance of the proposed scheme with that of the conventional scheme. Computer simulation results show that the proposed scheme outperforms the conventional scheme.

좌전하행지 관동맥 개구부위의 망사형의 관(Slotted Tube)스텐트와 나선형 코일(Coil)스텐트 삽입후 단기 및 장기 암상 경과의 비교

박훈기,박성욱,이일수,이상곤,김진우,이근,정상식,이철환,홍명기,김재중,박승정 대한순환기학회 1998 Korean Circulation Journal Vol.28 No.6

다차원 신호모형 해석을 통한 DOA 추정기법

박남철,최명수,박형준,김경호,이성로 목포대학교 정보산업연구소 2000 情報産業硏究誌 Vol.8 No.-

The Location-Informing service is based on the GPS data from the satellite. Until now, the service has been free. However, it may become charged. Therefore, we research the methods that can find the location-information using the antennas in future mobile communication systems and investigate the signal arrival direction estimation methods with considering practical environments.

PGE₁요도좌제의 제조 및 평가

박소민,최명신,한규원,김길수 이화여자대학교 약학연구소 2005 藥學硏究論文集 Vol.- No.15

PGE₁is an endogenous substance of potent vasodialator as well as inhibitor of platelet aggregation. It has been used therapeutically in peripheral arterial occlusive disease and impotence. Intracavernous injection of PGE₁ for erectile dysfunction has been established for several years as a treatment option for erectile dysfunction of diverse etiologies, but this mode of administration is limited by penile discomfort, pain at the injection site, inconvenience and noncompliance. As the matter of worse, the β-hydroxy moiety of PGE₁is extremely susceptile to dehydration in solution to give inactive PGA₁ and PGB₁. For the improvement of stability, rapid absorption at action site and the convenience of application, PGE₁was formulated as urethral suppositories of three types of formulations, such as PEG, witepsol, and the mixture of PEG and witepsol. The stability test of PGE₁and the release test in urinary suppositories were performed. Futhermore, the effect fo enhancers and vehicle composition on the penetration of PGE₁through excised rat skin was evaluated by permeability coefficient and enhancement ratio.

기(氣)수련이 스트레스 반응에 미치는 영향

박미숙,이명수,정영자,김혜정,문성록,김용규 한국스포츠심리학회 2003 한국스포츠심리학회지 Vol.14 No.3

본 연구는 스트레스 반응을 측정하는 스트레스 반응 척도 설문지(Symptoms of Stress: SOS)를 이용한 횡단적 연구로서 심신수련의 하나인 기수련이 스트레스 반응에 미치는 효과를 살펴보았다. 72명의 건강한 정상인과 180명의 기수련자를 대상으로 하여 조사하였으며, 기수련자들은 수련기간에 따라 초급군(1-4개월; 64명), 중급군(5-12개월; 50명), 고급군(1년 이상; 66명)로 나누었다. 실험결과 1년 이상 수련한 기수련자들이 말초혈관 증상군, 심폐 증상군, 중추신경계 증상군, 위장계증상군, 습관적 행동 형태군, 우울 증상군, 불안증상군등의 스트레스 반응 하위척도에서 대조군에 비해 통계적으로 유의하게 감소하였다. 전체 스트레스 값은 대조군에 비해 기수련자 집단이 아주 낮았으며 수련기간이 길수록 감소하였다. 이러한 결과는 기수련이 스트레스 중재와 스트레스 증상을 줄이는데 효과가 있음을 나타낸다. We examined the effects of Qi-training, one of Korean traditional psychosomatic training, on stress coping ability by cross-sectional investigation with inventory of symptoms of stress (SOS). Four types of groups- normal healthy (n-74), three groups of Qi-trainees (group primary level: subjects with Qi-training for 1-4months, n=64; middle level: 5-12 months, n=50; high level: more than 12 months, n=66) participated in this study, Qi-trainees with over 1 year training had significantly lower scores in all SOS subscales compared to controls. Total stress scores of Qi-trainee groups were substantially lower than controls and further reduction with larger training periods. These results suggest Qi-training is effective in stress management and decreasing symptoms of stress

속잎이 노랗고 뿌리혹병에 저항성인 배추 계통‘원교20034호’육성

박수형,장하영,서명훈,박민영,윤무경,이정수 忠北大學校 農業科學硏究所 2015 農業科學硏究 Vol.31 No.2

건강보험에서 5인 미만 사업장의 직장보험 편입 효과 평가와 정책 방향

송명섭,김창보,고수경,임정수,박지연 한국사회보장학회 2002 사회보장연구 Vol.18 No.2

본 논문은 건강보험공단이 2001년 「월 이후 추진하고 있는 5인 미만 사려장의 직장보험 편입을 평가하고 향후 정책방향을 제시하는데 목적을 두고 있다. 5인 미만 사업장의 직장보험 편입은 보험 가입자의 보험료 부과의 형평성을 제고하고, 영세사업장 노동자들의 보험료 부담을 경감시키며 건강보험재정 안정 효과를 위한 것이다. 2001년 7월 이후 12월 31일까지 직장보험으로 신규편입한 대상자는 모두 약 64만명이었으나 편입이전지역보험 대상자는 약 53만명, 직장보험 대상자는 약 10만명이었다. 또한 동일 기간동안 직장보험으로 편입된 사업장은 모두 88,751개였다. 편입 전후 개인별 보험료 수준 변화를 살펴보면 보험료 부과대상 중 77.6%는 본인이 부담해야 할 보험료가 감소하였다. 대신 사업주의 보험료 부담은 상대적으로 늘어났다. 한편 2001년 7월 이후 12월까지 직장보험 편입으로 건강보험의 재정은 약 19,530백만원의 재정절감효과가 있었다. 직장보험은 7,331백만원의 보험료 수입 증가가 발생하였으며, 지역보험은 12,199백만원의 재정절감 효과가 있었다. 향후 5인 미만 사업장의 직장보험 편입이 원만히 추진되기 위해서는 피부양자 인정기준의 개선과 영세사업장 사업주의 보험료 부담을 경감시켜주기 위한 방안을 강구해야 하며, 사회적으로는 비정규직 노동자에 대한 사회보장 적용 확대를 위한 노력이 동시에 추구되어야 할 것이다. This study was conducted for the purpose of evaluating coverage of small companies with less than 5 persons by Corporate Insurance since July 2001 and of suggesting policy implication. This coverage expansion by Corporate Insurance was intended for improving equity level of contribution imposition, alleviating financial burden of employees and achieving financial stability of health insurance. While, from July 2001 to December, the number of newly covered beneficiaries was about 642 thousand persons, the number of Regional beneficiaries before the new coverage expansion by Corporate Insurance was 533 thousand persons. And the number of Corporate Insurance beneficiaries before the coverage expansion was 101 thousand persons. For the same period, the number of companies by the new coverage expansion of Corporate Insurance was 88,751. Before and after the expansion, taking into account changes of individual contribution levels, payment share levels of contribution were reduced to the 77.6% of the beneficiaries newly covered by Corporate Insurance. Instead, payment share level of contribution of employers was increased more than before. And 19,530 million won was increased in National Health Insurance Expenditure. 7,331million won was increased in Corporate Insurance revenue. Expenditure reduction effect of 12,199 million won was able to be obtained in Regional Insurance. In order to implement successfully the coverage expansion by Corporate Insurance in times ahead, employers' contribution share should be reduced, when considering low profitability levels of small companies.

4세대 이동 멀티미디어 시스템의 연구동향 분석

최명수,박형준,박남철,김경호,이성로 목포대학교 정보산업연구소 2000 情報産業硏究誌 Vol.8 No.-

In this paper, we first define 4th-generation multimedia systems that play an important role in 21C information society. Nest, we investigate and analyze the international trend of the related research and then predict the evolutionary model for 155Mbps wireless mobile multimedia systems.

위성 ATM망에 적합한 응용서비스 모형 개발

최명수,박남철,박형준,김경호,이성로 목포대학교 정보산업연구소 2000 情報産業硏究誌 Vol.8 No.-

The use of the Internet is much increased and the multimedia data such as voice and image should be processed in the Internet. The required characteristics of the communication networks for the 21-st century Internet are the fusion between communications and broadcasting, high speed, large capacity, high intelligence, and personalization. In realizing the characteristics mentioned above, the ATM is the only technique that can practically guarantee QoS and is the core technique in super high-speed service networks. In this paper, we will investigate the international study of the high-speed the satellite communication and then research plans for developing and providing optimum application services.