전력선 채널에서의 DS/SSMA BPSK 코릴레이션 수신기 성능에 관한 연구

강병권,조창길,조관,이재경,황금찬,Kang, Byeong-Kwon,Cho, Chang-Gil,Cho, Kwan,Lee, Jae-Kyeong,Whang, Keum-Chan 한국통신학회 1992 韓國通信學會論文誌 Vol.17 No.9

본 논문에서는 전력선 채널에서 DS/SSMA BPSK 통신 시스템의 전형 및 하드리미팅 상관 수신기의 성능을 분석하였다. Chan의 잡음 모델을 이용하여 전력전에서 발생하는 강한 임펄스성 잡음을 배경 잡음에 대한 임펄스성 잡음의 전력 스펙트럼 밀도비 $(N_1/N_b)$, 데이터 폭에 대한 임펄스성 잡음 폭의 비(f). 임펄스성 잡음의 발생주기에 대한 임펄스 잡음 폭 (DF)등의 파라미터로 모델링하여, 각 파라미터 변화에 따른 시스템의 성능을 분석하고, 다중접속 간섭 잡음을 가우시안 근사화하여 각 수신기의 다중접속 능력을 평가하였다. 분석 결과 $N_1/N_b$가 작고 f가 1에 가까운 경우 전형 상관 수신기의 성능이 더 우수했으나, $N_1/N_b$가 증가함에 따라 하드리미팅 상관 수신기가 비트 오율 및 다중 접속 능력면에서 전형 상관 수신기보다 더 우수한 성능을 나타냈다. In this paper, the performance of linear and hard-limiting correlation receivers for DS/SSMA BPSK power line communication system is analyzed. Strong impulsive noise of power line is modeled with Chan's noise model, and the performance of both receivers is analyzed in terms of parameters such as ratio of power spectrum density of impulsive noise to that background noise, ratio in impulsive noise width th that of data bit, and interarrival time of impulsive noise. And also multiple access capacity is evaluated with Gaussian approximation of multiple access interference. The results of this analysis reveal that the performance of linear correlation receiver is superior to that of hard-limiting correlation receiver when $N_1/N_b$ is small and is close to 1. But the BER and the multiple access capacity of hard-limiting correlation receiver becomes better in comparison with linear correlation receiver as $N_1/N_b$ increases.

갑상선기능항진증의 한의치험 1례

정찬길 世明대학교 한의학연구소 1999 韓醫學硏究所 論文集 Vol.2 No.-

갑상선기능항진증으로 진단된 여자 환자에 대하여 한약(팔미소요산가미방)을 20일간 투여한 결과 치료전에는 숨이 차고, 가슴이 답답하며 두근거렸고, 땀이 많이 났으며, 맥박 115회/분ㆍ체중41kgㆍ혈압 100/60mmHgㆍserum T₃ 471.11ng/㎗ㆍserum T₄ 21.86ng/㎗ㆍserum TSH 0.03μIU/㎗ 이하였으나, 치료후에는 제반 증상이 개선됨과 동시에 맥박 84회/분ㆍ체중 44kgㆍ혈압 110/70mmHgㆍserum T₃ 118.33ng/㎗ㆍserum T₄ 9.19ng/㎗ㆍserum TSH 0.3μIU/㎖로 변화되었기에 보고하고자 한다. This case report has concern with the effect of herbal medicine on the hyperthyroidism. The patient was 27 years old woman. She was dignosed as hyperthyroidism. I decided to administrate herbal medicine(palmisoyosan-gambling) to her. Before treatement, she had palpitation, sweating, and the heart rate was 115/min, body weight was 41kg, blood pressure was 100/60mmHg, serum T₃was 471.11ng/㎗, serum T₄was 21.86ng/㎗ and serum TSH was 0.03μIU/㎖ and less. But after treatment by herbal medicine duri g 20 days, the syptoms were all diminished and the clinical data & laboratory findings were altered as following. The heart rate: 84/minㆍbody weight:44kgㆍblood pressure 110/70mmHgㆍserum T₃:118.33ng/㎗ㆍserum T₄:9.19ng/㎗ㆍserum TSH:0.3μIU/㎖.

혼합형 자가면역성용혈성빈혈과 동반된 Evans 증후군 1례

선길홍,윤찬영,박상곤,박경희,우정주,한경택,김진화,김영훈,정춘해,박치영 朝鮮大學校 附設 醫學硏究所 2005 The Medical Journal of Chosun University Vol.30 No.2

Evans syndrome is defined as a simultaneous or sequential occurrence of autoimmune hemolytic anemia and autoimmune thrombocytopenia. Autoimmune hemolytic anemia (AIHA) is usually induced by IgG warm autoantibody or cold-active IgM antibodies reacting specifically with antigens associated with a patient's RBC. AIHA is a fairly uncommon disorder, with estimates of the incidence at 1 to 3 cases per 100,000 per year. Mixed-type AIHA is a relatively uncommon form of AIHA, with studies noting the incidence of 7-8% among cases of AIHA. We experienced a patient, 46-year-old woman who was diagnosed having a very rare clinical presentation of mixed warm and cold antibody mediated Evans syndrome. She was treated with corticosteroid therapy only and has been maintaining a complete response for 15 weeks. 저자들은 혼합형의 자가면역성 용혈성 빈혈과 자가면역성 혈소판 감소증이 동시에 발생한 혼합형 Evans 증후군으로 진단하고 스테로이드 요법 후 혈액학적으로 회복된 상태로 15주가 지난 현재 steroid 5 mg/일 까지 감량한 상태에서 추적 관찰 치료중인 46세 여자 환자를 경험하였기에 문헌 고찰과 함께 보고하는 바이다.

개구부가 있는 밀폐공간내 화재의 복합열전달 및 연소가스 분석에 관한 연구

박찬국,추병길,김철 (社團法人)韓國火災·消防學會 1997 한국화재소방학회논문지 Vol.11 No.1

The natural convection and combined heat transfer induced by fire in a rectangular enclosure is numerically studied. The model for this numerical analysis is partially opened right wall. The solution procedure includes the standard k-ε model for turbulnt flow and the discrete ordinates method (DOM) is used for the calculation of radiauve heat transfer equation. In numerical study, SIMPLE algorithm is applied for fluid flow analysis, and the investigations of combustor gas induced by fire is performed by FAST model of HAZARDI program. In this study, numerical simulation on the combined naturnal convection and radiation is car ried out in a partial enclosure fifed with absorbed emitted gray media, but is not considered scattering problem. The streamlines, isothermal lines, average radiation intensity and kinetic energy are compared the results of pure convection with those of the combined convection-radiation, the combined heat transfer. Comparing the results of pure convection with those of the combined convection-radiation, the combined heat transfer analysis shows the stronger circulation than those of the pure convection. Three different location of heat source are considered to observe the effect of heat source location on the heat transfer phenomena. As the results, the circulation and the heat transfer in the left region from heating block are mich more influenced than those in the right region. It is also founded that the radiation effect cannot be neglected in analyzing the building in fire. And as the results of combustion gas analysis from FAST model, it is found that O_2 concentration is decreased according to time. While CO and CO_2 concentration are rapidly increased in the beginning(about 100sec), but slowly decreased from that time on.

WEIGHT TRAINING의 强度差異가 골프選手의 體力 및 DRIVER SHOT 飛距離에 미치는 影響

박찬길 강원대학교 체육과학연구소 2001 江原大學校附設體育科學硏究所論文集 Vol.- No.24

The purpose of this study results from amateur woman golfers who are divided into a high intensity group and a low intensity group. Two groups are measured about the changes of fitness and flying distance in driver shots with weight training. Firstly, fitness changes within flexibility, power, leg strength, dominant of grip strength, non-dominant of grip strength, back muscle strength, muscular endurance(push-up) and muscular endurance(sit-up) make many differences in terms, but not in groups. Consequently, it shows that each group increases the fitness changes in terms. Secondly, there are generally considerable changes of one repetition maximum in half squat, leg extension, lying leg curl, standing calf raise, front shoulder press, standing barbell biceps curl, lying triceps extension, barbell wrist curl, seated cable row and abdominal crunch. However, there are no differences in groups. Thirdly, in the flying distance changes, the differences are statistically found in the group of high intensity. The differences increase a little bit before training, and after four and eight weeks, but not statistically. By the time the increases also appear more after eight week than after four week. The differences show much, while the differences don't appear between groups and time effectively. Ultimately, it shows the increases of flying distance. However, there is a big change between groups. Lastly, what was recognized as a difference between LI group and HI group in statistics was just 1RM(one repetition maximum) item of leg extension. But the items which were recognized as a different improvement by the term were in the factors of fitness flexibility, power, leg strength, grip strength(dominant), grip strength (non-dominant), back muscle strength, and muscle endurance(push-up, sit-up), and in the factors of 1RM half squat, leg extension, standing calf raise, lying leg curl, standing barbell curl, front shoulder press, barbell wrist curl, lying triceps extension, seated cable row, and abdominal crunch. and the difference by the term was approved in all items, because the flying distance was also extended. These results of fitness, 1RM, and the flying distance factors by different intensity of weight training showed the improvement of the fitness, 1RM and the distance of flying factors through all the period of weight training though the effects by different intensity were not so meaningful. The weight training for the purpose of improvement of the flying distance in a golf drive shot can be expected to be positive effect and when golfers train with high intensity rather than low intensity, fitness factors for the improvement of performance would be more improved in the distance of flying in the golf competition.

농어촌 인구 정주에 관한 환경 계획적 연구

정성찬,이길영 大田大學校 環境問題硏究所 2002 환경문제연구소 논문집 Vol.6 No.-

The settlement of population in agricultural areas helps to prevent the influx of agricultural population to metropolitan areas and also contributes to improving residential environments of large cities. Constituting a major pillar to support balanced development of a nation, it can be said to be the key task in regional planning. Recently, Korean agricultural society has gone through a tremendous change. The economic policy of urbanization and industrialization enforced in the 1970's resulted in the concentration of industries and economies mostly in cities, which inevitably led to the phenomenon of so-called "leaving countries for cities." This indicates the outflow of agricultural population from countries into cities. As a result, the development of agricultural regions has slowed down, with the population decreasing and the community becoming empty, in contrast to urban areas. Consequently, agricultural areas are facing a crisis, and it is hard even to maintain them as residential areas. Furthermore, the wide regional gap between cities and agricultural areas derived from the process of urbanization and industrialization is recognized as a big barrier to the efficient use and balanced development of the land of the nation. Therefore, plans of rearrangements of residential environments in the agricultural areas are emergingas an urgenttask, both in revitalization of decreasing agricultural areas and in balanced developmentof the national territory. However, academic investment or developmental policies up to now have been mostly concentrated on cities. Matters of agricultural areas, thus, have been neglected as secondary problems to those of cities. It is essential to view the question of the settlement of agricultural population from various perspectives and to have academic involvement. Yet, the settlement of population, the result of movement, is a very complicated phenomenon originated in the relationships between residents, the subjects of settlement, and the surrounding regional circumstances. These phenomena vary according to the behaviors and attitudes of the residents. And the degrees of satisfaction of the residents differ depending on each individual's value system. Therefore, the attempt to establish the settlement of the agricultural population can be seen in this context. It is the biggest mission, then, to simultaneously examine both aspects, the aspect regarding regional environments and the aspect related to residents, the subjects of settlement. Finally, as mentioned before, it is necessary to note that the attributes and conditions are various both in a macroscopic level involving regions and in a microscopic level involving individuals as subjects of settlement. It is also necessary to investigate the perspectives from which the settlement in the agricultural regions is dealt with in the regional, environmental planning. Obviously, this issue needs be handled with external and internal analyses as it involves both the reality and the ideal of the residents' value system. Therefore, this study is not about simply restoring the past in regard to a series of problems with the settlement of agricultural population. This study aims to pursue the natural essence of agricultural areas in which new agricultural regions and cities can be integrated under the conditions of national territory, and at the same time, to deal with the agricultural areas as new space for settlement.

바닥충격음 차음성능의 재현성에 관한 연구

장길수,국찬 東新大學校 工業技術硏究所 1997 工業技術硏究 Vol.3 No.-

This study aims to certify the assumption that the impact sound insulation performance of same floor structure is equal. Because the reproducibility is important for reliable rating of sound insulation performance. To certify this assumption, 20 floors were selected in high-rise apartment house and then the impact sound insulation indexes were derived from measuring data. As a result, the assumption is rejected. Thus to enhance the reproducibility of the impact sound insulation index, it is required to review increasing the number of target floors or measurement according to frequency ranges.

공항 인접지역 학교의 실내환경평가

장길수,국찬 東新大學校 1999 論文集 Vol.11 No.-

This paper aims to evaluate the thermal comfort in the classrooms and the sound transmission loss(T.L.) between the classrooms and outside windows in elementary school which was designed to enhance the aircraft noise insulation performance. Double glazing, small area of opening windows, relatively large area of walls and air conditioning system were employed for the insulating solutions. But it was thought that those solutions could deteriorate other indoor environments. From the field survey it was checked whether the thermal environment was proper in classrooms. And it was reviewed how to improve the thermal conditions. And the T.L. between the classrooms, between the classroom and the outer doors in case of the air conditioning was operating or rot. We hope these results to provide architectural designers with the reference data in similar situations.

폐외소세포암

선길홍,윤찬영,정춘해,박치영 朝鮮大學校 附設 醫學硏究所 2006 The Medical Journal of Chosun University Vol.31 No.3

Background: Small cell carcinomas (SCC) are most commonly seen in the lung, approximately 2.5-4% of all SCC occur in extrapulmonary sites. This study aimed to review the clinical features, therapy and natural course of patients with extrapulmonary small cell carcinoma (EPSCC) in single-institution series. Methods: We retrospectively reviewed the medical records of patients with SCC between December 2002 and November 2005. Study eligibility required that patients had pathologically proven SCC in sites other than lung with normal radiological findings of the chest and normal sputum cytology or negative bronchoscopic findings. Result: Eight patients with EPSCC were identified and their primary sites were various such as esophagus (4 cases), kidney (1 case), thymus (1 case), stomach (1 case) and unknown primary supraclavicular lymph node (1 case). The 4 patients were classified as limited disease (LD) and 2 patients were as extended disease (ED) at initial staging work-up. But 2 patients were undetermined. The 3 patients with EPSCC of LD were treated with operation and adjuvant chemotherapy or chemotherapy and radiotherapy and one received only supportive care. They showed favorable clinical courses with a median overall survival of 23 months. EPSCC of ED and undetermined group received only supportive care. They had aggressive clinical courses with a median overall survival of 3 months, Conclusions: EPSCC was identified in various sites with the most common primary site being the esophagus, It was predominantly occurred in old male patients and associated with smoking like as SCC of the lung. Since EPSCC is a relalively rare disease that mimics SCC of the lung in its response to treatment and survival pattern, it would appear advisable to follow similar treatment guidelines. Although recurrence within short terms was observed, a significant survival benefit was obtained in EPSCC of LD received treatment (chemotherapy, operation and radiation therapy). Thus, EPSCC is usually a fatal disease with meidan overall survival of 18 months. 연구배경: 소세포암의 가장 흔한 발생부위는 폐이며, 폐외소세포암은 전체 소세포암의 2.5~4%를 차지하는 매우 드문질환이다. 본 연구의 목적은 단일 기관에서 진단된 폐외소세포암의 임상적 특징, 치료와 자연경과를 보고하고자 하였다. 방법: 조선대학교부속병원에서 2002년 12월 부터 2005년 11월 사이에 소세포암으로 진단된 66명의 의무기록을 검토하였다. 폐외소세포암은 흉부 단순 몇 전산화단층 촬영, 객담세포 검사, 기관지경 검사에서 폐병번이 없으면서 폐와 병변의 조직학적 생검에서 소세포암으로 증명된 경우로 하였으며, 총 8명이였다. 결과: 본 연구에서 식도가 전체 폐외소세포 암 환자의 50%(4례)로 가장 많은 원발병소를 보였으며 그 외 흉선, 신장, 위가 1례씩 있었으며 쇄곧상부 림프절에서 소세포암이 발견되었으나 원발 병소를 발견 못한 경우가 1례 관찰되었다. 4명의 환자는 제한 병기를 보였으며 2명은 광범위 병기를 보였지만 나머지 2명은 위내시경으로 식도에서 소세포암이 조직학적으로 진단되었으나 보전적 치료만을 받길 원하여 병기결정을 위한 검사는 시행할 수 없었다. 제한 병기의 폐외소세포암 환자는 4명이었다. 2명은 수술적 절제후 보조항암화학요법을 받았으며, 1명은 항암화학요법후 방사션치료를 받았고, 나머지 한명은 보전적 치료만 시행하였다. 제한 병기의 폐외소세포암 환자틀은 양호한 임상 경과를 보였으며 중앙 생존기간은 23개월이었다. 하지만 광범위 병기의 폐외소세포암 환자와 병기를 분류할 수 없던 환자에 대해서는 항암화학요법 등의 적극적 치료는 시행하지 않고 보존적 치료만 시행하였다. 그들의 임상경과는 빠르게 악화되었으며 중앙 생존 기간은 3개월이었다. 결론: 본 연구에서 폐외소세포암은 다양한 장기에서 발견될 수 있으나 가장 흔한 곳은 식도였다. 소세포폐암과 유사하게 고령, 남성 및 흡연과 관련을 보였었다. 제한 병기에서 국소 치료, 항암화학요법은 생존기간의 연장을 보였으나 쉽게 다른 장기로 전이가 되거나 재발하는 매우 치명적인 질환임을 확인할 수 있었다. 전체 중앙 생존기간은 18개월 이었고 항암 화학요법등의 치료를 받은 군이 보존적 치료를 받은 군에 비해 의미있는 생존기간 (p=0.040)의 연장을 보였다. 본 연구는 단일기관의 상대적으로 적은 수의 소규모 연구이지만 폐외소세포암의 제한 병기에서 국소치료 및 항암화학요법은 생존기간의 연장을 보였고 쉽게 다른 장기로 전이가 되거나 재발하는 매우 치명적인 질환임을 확인 할 수 있었다.

3채널 맥파 검출장치의 GUI 개발

윤달환,정찬길,소경순 世明대학교 한의학연구소 1998 韓醫學硏究所 論文集 Vol.1 No.-

한의학은 개념적이고 주관적인 임상정보를 과학적 데이터화하여 환자를 치료하고자 한의의료장비의 응용에 많은 노력을 하고 있다. 맥파를 검출하기 위해서는 센서에 가해지는 압력, 센서 구동부의 운동 등 여러 가지 파라미터가 있다. 본 논문은 맥진의 정확한 맥상을 검출하기 위하여 3채녈 맥파검출 헤드장치 구동부를 유연하게 동작하도록 시스템을 개발하고, 기존의 양단 스위치 동작에 의한 헤드부의 모터운동을 제거함과 동시에 GUI형태로 맥진시스템을 구성한다. 특히 맥진정보를 받아들이는 寸ㆍ關ㆍ尺 헤드부의 정확한 동작이 맥진시스템의 성능을 향상시키는 역할을 하며, 이는 임상판정의 정확성을 기할 수 있도록 한다. In Oriental medicine, most of the medical examination of a patient depend on subjective explanation of self-patient. The application of an apparatus has an important significance in ensuring the objectivity of clinical information and in promoting the reproductivity and stability through the qualification and quantization. This paper development the pulse diagnostic apparatus of 3-channel type to detect exact pulsatory motion of a pulse wave, which is the type of GUI(graphic user interface) that one have the faculty of smoothing motor and the driving part of non-swich operating the sensor head. This system increase the function of pulse diagnosis and support the clinical decision.