이중 셀 구성에 의한 셀룰라 이동통신 시스템의 채널용량 개선

신창윤,우병훈,조성준 한국항공대학교 1994 論文集 Vol.32 No.-

본 논문에서는 셀에서의 용량 증대를 위하여 셀을 내부 셀과 외부 셀로 나누어 구성하는 이중셀을 적용하였을 경우 반송파 대 동일채널간섭비와 채널용량을 산출하고 분석하였다. 이를 위하여 셀룰라 육상이동통신 시트테에서 규칙적인 주파수재사용 패턴 N을 도출하여 무지향성 안테나 사용시와 지향성 안테나 사용시 셀 패턴에 따른 반송파 대 동일채널간섭비를 계산하였다. 이중 셀을 구성하였을 때 내부 셀에 주파수 재사용 패턴 N을 작게하여 내부와 외부 셀의 주파수 재사용 패턴을 다르게 하면 채널용량이 크게 개선되었다. 실제적인 통화품질 기준인 반송파 대 동일채널간섭비가 24dB 이상이 되는 경우 가장 용량면에서 우수한 주파수 재사용 패턴은 N=7인 3 섹터 셀이었고 이중 셀로 구성하였을 경우 내부 셀 패턴이 N=3, 외부 셀 패턴이 N=7인 3 섹터 셀의 경우였다. 이 경우 이중 셀을 구성하지 않은 N=5인 주파수 재사용 패턴과 같은 용량을 가질 수 있었다. 이것은 이중 셀을 상용하므로서 한정된 주파수의 수용 용량을 1.4배 높일 수 있음을 알 수 있다. In this paper, when the dual cell, a cell which is divided into the inner cell and outer cell, is employed to increase the channel capacity, the carrier power to co-channel interference power ratio (C/I) and channel capacity are evaluated and analyzed. For this evaluation, the regular frequency reuse pattern factor N is calculated and them the C/I is calculated according to the cell pattern when the isotropic antenna is used and the directional antenna is used, respectively. In a dual cell, the channel capacity is incrased by making the frequency reuse pattern factor N of inner cell smaller than that of outer cell. In the case of nondual cell, the channel capacity is the largest when the frequency reuse pattern factor N is 7 in the 3 sector cell on the condition of the C/I is over the 24dB of standard call quality. In the case of dual cell, the channel capacity is the largest when the frequency reuse pattern facotr N is 3 for inner cell and N is 7 for outer cell. In this case, the cell has the same capacity as the frequency reuse pattern factor N=5 of nondual cell. This result shows that the channel capacity with dual cell can be incrased in the limited available frequency by 1.4 times more than the capacity with nondual cell.

수술적으로 치료한 통증을 동반한 흉추부의 후외상성 Schmorl씨 결절 : 2례 보고 Report of Two Cases

신병준,이재철,송화용,정석봉,권계원,조영일,김연일 순천향의학연구소;Soonchunhyang Medical Research Institute 2004 Journal of Soonchunhyang Medical Science Vol.10 No.2

Study Design : Two patients who had painful Schmorl's node at thoracic level from acute trauma were adopted and taken operation for its treatment Objectives : To document the effect of operation for the treatment of painful Schmorl's node at thoracic level summary of background data : Schrmorl's nodes are common spinal lesion generally believed to be asymptomatic, but in some cases there were painful symptom by Schmorl's node. This case report is to explain the effect of operative treatment for the painful Schmorl's node. Methods : Two patients were adopted who had traumatic painful Schmorl's node at thoracic level for our case report. They were treated conservative methods at first but it's effect were poor, so they were taken anterior decompression and fusion, and checked back pain symptom. Result : In all two patients, the symptom of back pain by Schmorl's nodes at thoracic level was almost subsided. conclusion : For the treatment of traumatic painful Schmorl's node, most of surgeon says that conservative treatments were treatment of choice, but operative treatments are also benefit to subsidence of back pain by Schmorl's node.

퇴행성 요추 질환의 후방 수술시 발생한 경막 손상

신병준,이재철,조영일,최원기,허일,김경제,김연일 대한척추외과학회 2003 대한척추외과학회지 Vol.10 No.3

심상성 루프스에서 Nested-Primer Gene Amplification Assay에 의한 결핵균 DNA의 검출

신문석,전효진,김병천,이규석,김재룡,권호준,송준영 啓明大學校 醫科大學 1994 계명의대학술지 Vol.13 No.4

Lupus vulgaris, which is a progressive form of postprimary tuberculosis in patients with a moderate to high degree of immunity and tuberculin sensitivity, is the most common, most serious, and most variable type of cutaneous and mucous membrane tuberculosis. Domonstration of M.tuberculosis directly or in culture in some of these eruptions can be difficult. It is essential to demonstrate the presence of M.tuberculosis in a clinical sample for a definitive diagnosis of tuberculosis. With the discovery of the polymerase chain reaction (PCR), the DNA diagnostic approach for infection has developed in a short period. With the dual purpose of definitive and rapid diagnosis of tuberculosis, this study examined the usefulness of a nested PCR for detection of M. turberculosis. Compared with a single-step PCR, the two-step PCR was able to enhance sensitivity approximately 1,000-fold on the basis of bacterial counts and DNA quantity. We concluded that two-step nested PCR appeared to be the most useful PCR protocol for early and sensitive diagnostic method detecting M.tuberculosis in acid-fast stain negative specimens.

병원단위의 임상진료지침 개발과정

신영수,김창엽,오병희,한규섭,윤병우,한준구,강영호 한국의료QA학회 1997 한국의료질향상학회지 Vol.4 No.1

Background : With increased concerns about variation among physician a practice pattern and their impact on the quality of care, clinical practice guidelines have been developed by many different organizations, with differing aims and incentives. From the same point of view, there is growing interest in the development of clinical practice guidelines in Korea, but with only a few examples. As a result, there is not much exploration on the incentive and barrier to development guidelines as well as description on the development process. The purposes of this study are to describe the process of the four different clinical practice guidelines in a hospital setting, and to identify incentives and barriers in the development of guidelines. Methods : For this research, a clinical practice guideline development committee and four clinical practice guideline development teams were organized in a university hospital which has more than 1,200 beds. Twenty eight doctors, three nurses, and one technician participated as members of development teams for eight months. Four to six meetings were held, and three to seven departments in the hospital were involved. Results : The topics which developed into clinical practice guidelines were cardiopulmonary resuscitation(CPR), blood transfusion, anticoagulation, and angiography. The main goals set by teams were education(CPR, angiography), risk management(blood transfusion), and to enhance quality of care(anticoagulation). Among four teams, only in the team for anticoagulation guideline medical record review and pilot-testing were performed. Also literature review was not carried out systematically. However, all the guidelines were developed by multidisciplinary participation by personnels of related departments. All the team expected guidelines to be used as standard protocols in the practice. Conclusion : Experience and skill in developing process has to be improved to have a more valid and useful practice guideline. In particular, literature review and problem identification by examining medical record should be emphasized. Also further studies of the clinical outcomes of the guidelines application and changes in physicians behaviors would be required.

합병증이 동반된 Meckel씨 게실 2례 보고

정병욱,박동일,이준희,서정욱,원유홍,김웅,신현종,권영무 동국대학교 경주대학 1996 東國論集 Vol.15 No.-

합병증이 동반된 Meckel씨 게실을 가진 환자의 치료에 대한 필요성은 과정이 문제이다. 하지만 우연히 만나는 게실의 처치는 논란 중이다. 부수적인 게실 절제술(incidental diverticulectomy)의 제안자는 증상이 있는 게실의 외과적 처치는 중요한 이환 및 사망률은 지적한다. 이를 반대하는 사람들은 전 생애를 통해 합병증의 위험성이 낮게 나타나므로 필요가 없다고한다. 게실의 예방적 제거는 개복술시 우연히 발견 될 때 시행한다. 이는 남아있는 게실이 나중에 합병증을 일으키는 것보다 술후 합병증의 위험성이 매우 적음을 알 수 있다. 저자들은 합병증이 동반된 Meckel씨 게실 2예를 경험하였기에 문헌 고찰과 더불어 보고하는 바이다. The necessity for therapy with complicated Meckel's diverticular is a matter of course.However, management of the incidentally encountered diverticulum is controversial. Proponents of incidental diverticulectomy point to the significant morbidity and mortality rates of surgical treatment of symptomatic divenicular. Other authors base their opposition to incidental diveniculectomy on the low risk of complications developing during lifetime. Prophyillctic removal of the diveniculum is indicated when it is found incidentally at laparotomy, because there are few postoperative complications and the risk exists that the remaining diverticulum may be the cause of later complication. The 2 cases of complicated Meckel's diverticulum are reported with a brief review of literature.

팔영산 삼림식생과 토양환경

이호준,김종홍,배병호,박문수,전영문,강재구,신정식 建國大學校基礎科學硏究所 1997 理學論集 Vol.22 No.-

전라남도 고흥군 소재 팔영산 (608.6 m) 일대의 삼림군락에 대한 색생조사를 1993년 10월부터 1995년 7월까지 실시하였다. 조사한 자료는 Z-M 방식에 의해 종조성표를 작성하였다. 이에 따라 삼림군락은 신갈나무군락, 졸참나무군락, 굴참나무군락, 서어나무군락, 소나무군락등 5 개 군락으로 분류되었다. 입지와 환경과의 유기적 관계를 조사하기 위해 토양을 분석한 결과, 신갈나무군락은 토양의 비옥도가 높은 산의 능선 부위에 집중 분포하였으며, 굴참나무군락과 소나무군락은 토양의 비옥도가 낮고 비교적 건조한 고도 400 m 이하 지역에 주로 군락을 형성하고 있었다. 또한 졸참나무군락은 고도 300 - 550 m 이내에서 부분적으로 나타났으며, 서어나무군락은 토양의 비옥도가 양호한 고도 300 - 550 m 사이의 골짜기 주변에 국지적으로 분포하였다. 팔영산 삼림식생의 특징은 상록활엽수림이 형성될 수 있는 지역이나 후박나무, 동백나무, 사스레피나무 등의 몇몇 종을 제외하고는 상록활엽수의 분포를 확인할 수 없었으며, 일부 식재림을 제외한 대부분의 지역이 낙엽활엽수와 소나무의 혼효림으로 구성되어 있었다. The phytosociological study forest vegetation on Mt. Palyoung (608.6 m) was investigated from October 1993 to July 1995 in Koheug-Gun, Cheonnam province. According to Z-M method, the floristic composition table of the forest vegetation was divided into five community as follows; Quercus mongolica community, Quercus serrata community, Quercus variabilis community, Pinus densiflora community, Carpinus laxiflora community. The soil was analyzed to investigated the soil conditions and soil fertility. As a result, the organic matters which showing soil fertility were found to be low Quercus variabilis and Pinus densiflora community at comparatively xerophic conditions, below 400 m altitude, while they were increased in Quercus mongolica community on mountain ridge, and that Quercus serrata community was appeared 300-550 m altitude around mountain stream to moderate soilfertility. The forest vegetation of Mt. Palyoung area unconfirmed capable of evergreen broad-leaved forest, but appeared to Machilus thunbergii, Camellia japonica and Eurya japonica species etc. On the other hand, surveyed site's vegetation was distributed mixed forest of deciduous leaved forest and Pinus desiflora, except for some afforestation.

韓國産 脣形(꿀풀)科 植物에 關한 本草學的 硏究

盧炳圭,金裕鎭,金台睍,宋昊埈,辛民敎 한국전통의학연구소 1999 한국전통의학지 Vol.9 No.1

A Herbalogical Study in the Plants of Labiatae in Korea. For the purpose of developing Korean Herbgalogy with the plants of Labiatae which grow wild and is planted in korea, the these and writings on herbalogy, from literature of successive generations, have been throughly investigative and the results obtained were as follows: 1. There were totaled to 27 genera and 86 species in Korea and among them medical plants are 24 genera, 59 species, some 68% in total but, the number of species may be added because of the similar plants. 2. According to the oriental names which can be used for medical purpose, the medical plants belonging to the Labiatae family were classified as Herba 29, Radix 4, Fructus 3, Folium 2, Lignum 2, Semen 1 and Flos 1. 3. According to sum of 86 species in Labiatae family, they were classified into Scutellaria genera 10, Salvia genera 6, Ajuga genera 5, Clinopodium genera 5, Elsholtzia genera 5 and Mosla 5. Thus it was noticed that Scutellaria genera was the main kind, some 12% in total. 4. According to the number of species of the original plants about each chinese materia medicals, they were classified into HERBA AGASTACHIS 5 and HERBA AJUGAE, HERBA SCUTELLARIAE, HERBA LYCOPI 3 each. 5. According to nature and flavour of medical plants, they were classified into warmth, heat: 20 each, cold, cool: 16 each, balance 4 and unidentified 2. Thus it was noticed that warmth and heat is the main in nature and flavour medicinal plants. 6. According to the Properties and Principal curative action, they were classified into drugs for clearing up heat and toxin 8, drugs for clearing up heat and dispelling pathogenic heat from blood, drugs for clearing up heat and heatstroke 3 each, drugs for activating the blood and removing blood stasis, drugs which is sudorific and pungent in nature and flavour for dispelling wind and cold in the treatment of exterior symptom complex 4 each. Thus it was noticed that drugs for clearing up heat was the main kind. 7. Comparing to whole medical plants 42 kinds, toxic drugs include minor toxin were 3 kinds, 7% of the whole. Thus toxic drugs were rare. From this result, it was revealed that the plants for medical purpose in Labiatae was 68% of the whole, in which HERBA was mostly abundunt and toxic plants was so rare that it will be used for clinical treatment more easily. It is considered that many experiements and clinical approches must be continued to use Labiatae plants widely.

대퇴골두 골괴사를 동반한 슬관절 골괴사 : 증례 보고

송준민,이병일,나수균,신영수,최창욱,박종석,권희 순천향의학연구소 1996 Journal of Soonchunhyang Medical Science Vol.2 No.1

본 순천향대학교 의과대학 정형외과학 교실에서는 2명의 환자에서 발견된 대퇴골두 골괴사와 함께 발생한 양측 슬관절 골괴사를 경험하였기에 보고하는 바이다. 대퇴골두 골괴사가 있는 환자에서 슬관절 동통을 호소하는 경우 연관통 등으로 여겨 간과하기 쉬우며, 대개 고관절의 통증으로 체중부하 보행이 어려운 경우가 많아 통증이 약하게 나타나기도 하기 때문에 관심을 가지고 슬관절 골괴사를 동반하는지 여부를 판단하여야 할 것이다. Osteonecrosis of the knee associated with osteonecrosis of the femoral head was very rare and reported cases were quite rare. We have experienced two cases of osteonecrosis of both knees associated with osteonecrosis of the femoral head. One is a 44-year-old man who had avascular necrosis of the righ femoral head and osteonecrosis of both knees, femoral condyle and metaphysis of proximal tibia. Another case is a 39-year-old man who had osteonecrosis of both femoral head and osteonecrosis of the both knees, medial condyles of both tibias. They were treated with total hip replacement arthroplasty for avascular necrosis of the femoral head and conservatively for osteonecrosis of the knee. If a person complains of pain in hip and knee simultaneously, we should pay attention and rule out osteonecrosis of the knee.

초등학생들의 형식적 추론 능력에 관한 연구

라병소,신경자,신준식,서동엽 한국수학교육학회 2002 수학교육 Vol.41 No.3

We investigated on the primary school children's abilities of formal reasoning. Seventy students in grade 5 participated in the study. They responsed their best reactions on the problems constituted of three parts requiring the informal or formal reasoning and generalization. Their reactions are classified by some criteria depending the level of reasoning. About 10 students showed that they constructed a kind of scheme for solving the problems, similar to formal reasoning and beyond naive informal reasoning. And about 30 students did so partially. We concluded that the teaching and learning of reasoning by the progressive increasing the degree of rigor from grade 5 is possible.