신도시 아파트 단지내 근린상가 업종의 수직적 기능분화에 관한 연구

송지수,김찬호 중앙대학교 건설환경연구소 2000 環境科學硏究 Vol.11 No.2

This study identifies the vertical functional differentiation of commercial facilities in apartment complexes of new towns in the microscopic landuse level. The data used in the study are originally from the previous study by Kim and Song (2000). It is properly cleaned up for the analysis in the study. This study constructs two hypotheses. They are ; 1) vertical functional differentiation of landuse in commercial facilities would exist, 2) vertical functional differentiation of lease rate in commercial facilities would exist. This paper suggests conclusions about type of industry ; 1) which is influenced of accessibility, and more influenced of lease rate, 2) which is only influenced of lease rate, 3) which is only influenced of accessibility. Consideration of horizontal location characteristics and external characteristics incoperated with vertical location characteristics would provide more reliable results and identify inherent relationships between them. It remains for future research.

한국 및 러시아 한국계 청소년 우울증의 사회심리적 위험요인에 대한 횡문화 비교 연구

송동호,민성기,김지웅,김찬형,이홍식,Kim, Larissa 大韓神經精神醫學會 1999 신경정신의학 Vol.38 No.5

연구목적 : 본 연구는 사회문화적 배경이 다른 한국과 러시아, 두 나라의 한국인 청소년을 대상으로 우울증의 유병율을 비교 조사하고, 우울증과 관련된 사회심리적 위험요인들을 알아보고자 하였다. 방 법 : 연구도구의 한국어판을 제작하고 두 나라의 청소년 우울증 환자 40명씩을 대상으로 우울척도의 cut-off 점수를 산정하기 위한 예비연구를 본 연구에 앞서 시행하였다. 한국의 청소년 대상은 서울 소재의 중고등학생 838명이었고, 러시아의 청소년은 우즈베키스탄 공화국의 중고등학생 중 양부모가 모두 한국인인 652명이었다. 연구도구로는 우울증의 사회심리적 요인들과 횡문화적 요인들을 조사하기 위하여 기초자료 설문지 및 Beck 우울척도를 적용하였다. 결 과 : 우울증 환자를 대상으로 시행한 예비연구에서 얻은 Beck 우울척도의 cut-off 점수 19점 이상을 기준으로 하였을 때, 한국 청소년 집단에서 우울증의 유병률은 26.5%인데 반하여 러시아 청소년에서는 7.4%의 유병률을 보였다. 한국인 청소년들은 한국인-러시아 청소년에 비하여 염세주의(pessimism), 실패감(failure), 자살사고, 죄책감 등, 절망감(helplessness)과 관련된 증상들이 유의하게 많이 나타났다. 한국인 청소년과 한국인-러시아 청소년 간에 우울증의 유의한 사회심리적 위험요인들로서 여성, 낮은 학업성적, 부모와의 갈등이 공통적으로 나타났으며, 그외에 친구교제 요인, 만성 신체질환, 형제간이나 친구들과의 갈등이 한국인 청소년에서는 또 다른 위험요인으로 존재하였다. 결 론 : 본 연구를 통하여 한국인 청소년의 우울증 유병율이 한국인-러시아 청소년의 유병률에 비하여 유의하게 높았으며, 한국과 러시아의 한국인 청소년들 간에 우울증의 유의한 사회심리적 위험요인들이 차이가 있음을 시사한다. Objectives : In order to study a cross-cultural epidemiology of the adolescent depressives with Korean ethnicity in Korea and Russia, we compared psychosocial characteristics and risk factors of depressive disorder between two school-based populations in different sociocultural environments. Methods : We measured psychosocial variables of 838 subjects in Korea, and 652 in Russia(Uzbekitan) using Basic Questionnaires and Beck Depression Inventory(BDI). Results : The cut-off point of BDI for adolescent depression in Koreans was 19 points. Higher prevalence of depression was noted in Korean adolescents(26.5%) compared to Korean-Russian adolescents(7.4%). We found signicant risk factors of adolescent depression in two study samples : female, academic failure, meeting friends less frequently, presence of chronic physical illness, interpersonal problems with parents, and same-sex and opposite-sex friends. Conclusions : Our data will provide information on cross-cultural understanding of psychosocial characteristics and risk factors in adolescent depression compared between Koreans and Korean-Russians.

복어중독에 의한 가사 상태에서 소생한 1예

송승찬,신진호,강석우,박경남,최호순,박근태,문희식,기춘석,이성희,윤병철,노우균,조균석,이민호 大韓應急醫學會 1998 대한응급의학회지 Vol.9 No.3

Tetrodotoxin is a neurotoxin produced by about 90 species of puffer fish and causes paralysis of central nervous system and peripheral nerves by blocking the movement of all monovalent cation. Ingestion of tetrodotoxin produces clinical manifestations such as paresthesias(within 10-45 min), vomiting, lightheadedness, salivation, muscle twitching, dysphagia, difficulty in speaking, convulsion and death that expressed by cardiopulmonary arrest with loss of brain stem reflex sometimes. Tetrodotoxin prevents or delays ischemia induced neuronal death by way of following 3 mechanisms. Firstly, it reduces the energy demand of the brain tissues. Secondly, it delays or even prevents anoxic depolarization. Finally, it deminishes ischemia induced cell swelling and cerebral edema. We report a case of puffer fish poisoning which presented with cardiopulmonary arrest and loss of brain stem reflex, but completely recovered by aggressive cardiopulmonary resuscitation.

레일리 페이딩 채널에서 길쌈부호를 채용한 16QAM/OFDM 시스템 성능에 관한 연구

송찬호,이용일,김언곤,강영흥 大田産業大學校 1999 한밭대학교 논문집 Vol.16 No.1

In this paper, we simulated the performance of 16QAM/OFDM system with 1/2 convolutional coding technique in Rayleigh fading channel with COST-207 delay model. This system includes the Time/Frequency Interleaver, which is adapted EUREKA-147, and the 2-dimentional Pilot Symbol Assited Modulation(PSAM) method with or without low pass filter(LPF). In the simulation, we consider the coding effect according to channel decoding method and the performance of channel estimation with or without LPF. As a result of simulation, We obtained the result that the system using 4bit soft decision Viterbi decoding is required about 11dB -- 14.5dB to satify the BER 10^-3 in Rayleigh fading channel according to channel condition. And also the system performance of PSAM with LPF has thc better peformance of about 2dB than that of system without LPF. And the coding effect of this system is about 2 - 6dB according to channel decoding method.

대망에 발생한 방선균증 1례

송상훈,심찬섭,이문성,김진오,조주영,김영석,문종호,이진우 순천향의학연구소 1999 Journal of Soonchunhyang Medical Science Vol.5 No.1

Actinomycosis is an uncommon chronic suppurative disease characterized by multiple abscess, draining sinuses, abundant granulation, and dense fibrous tissue, caused by the actinomyces organisms. It occurs in three major sites: cervicofacial, abdominal, and thoracic. The abdomen is the second most common involved site in previous studies, and there are three ways this organism can affect the gastrointestinal tract: through a blood-borne infection, by swallowing, or by proliferation at a more distal intestinal area. Abdominal actinomycosis is an unusual disease but remains an important differential diagnosis in patients with abdominal mass. Obtaining the diagnosis is difficult and rarely made preoperatively, but provide the key to its management. Medical therapy is effetive in eradicating the disease; however, because of the large amount of reactive fibrosis formed by the infection, it requires long-term therapy. Surgical treatment may be essential in many cases, primarily when malignancy cannot be excluded or if extensive necrotic tissue exists. There are a few description for actinomycosis involving omentum. We report a case of patient with omental actinomycosis, suspected to have a malignancy requiring an exploratory laparotomy with resection.

전공의들의 직업적 유해인자 및 직업만족도

송혜란,김진하,변주현,이광영,이덕희,김호찬 大韓産業醫學會 2003 대한직업환경의학회지 Vol.15 No.3

목적: 전공의는 여러 유해인자에 노출되어지고 있으며 과중한 업무로 인한 수면 부족에 시달리고 있다. 본 연구는 전공의의 건강상태의 기초 자료를 제공하고 향후개선 방안을 도출하기 위하여 시행하였다. 방법: 연구대상은 2000년 3사관학교와 국군군의학교에 입소한 전체 1,316명 중 전공의 수련과정 없이 입대한 의사와 치과의사, 한의사를 제외한 881명을 대상으로 설문지를 배포하여 784부(회수율: 89.0%)를 회수하고 이중 분석이 가능한 704(79.9%)명의 자료를 최종 분석하였다. 결과: 월평균 당진횟수는 레지던트 1년차에서 19회 정도이었다. 당직 시 평균 수면시간은 레지던트 1년차에서 4시간미만 이었다. 수련기간 동안 전공의의 20%이상에서 방사선, 레이저, 살균소독제, 마취가스, 항암제에 노출되었으며 예방대책은 방사선과 레이저의 노출의 경우 35%정도를 제외하고는 10%내외로 조사되었다. 연구대상자중 91.1%에서 수련기간 동안 주사침이나 시술에 의해 손상을 입었으며 그 중 본인이 감염된 경우는 HBV 2.3%(4명), HCV 0.6%(1명)으로 조사되었다. 응답자의 28.4%에서 자신의 직업에 불만족 하였으며 96.5%가 과중한 업무부담을 느꼈고 69.5%가 동일한 임금수준에서 직업을 바꾸고자 한다고 응답하였다. 결론: 전공의는 수련기간 동안 물리적, 화학적, 생물학적 유해인자에 노출되고 있었으나 이에 대한 보호나 예방대책은 거의이루어지지 않고 있었으며 과중한 업무부담으로 수면부족을 초래하여 가장 중요한 환자 진료에 지장을 받고 있었다. 수련기간 동안 대다수가 의사로서 직업에 대한 흥미를 가지고 있었으나 업무부담과 진료이외의 업무 등으로 소득과 조건이 비슷하다면 다른 직업을 선택하고자 하였다. 이상의 결과를 토대로 전공의들을 위한 유해인자의 보호대책 및 예방대책을 마련하며 과중예방대책이 마련되어야 하고 업무환경개선 및 업무로 인한 건강장해에 대한 정당한 보상이 향후에 마련되어야 할 것이다. Objects: Residents are exposed to various hazards and harassed by sleep dificiency due to overwork. This study was performed to outline the health condition of residents and develop the ways of improving it. Mehtods: A questionnaire was distributed to 881 army doctors who enrolled at the Korea Third Military Academy and The Armed force Health Service School in 2000 with the exception of medical doctors who joined the armed service without going through intern and resident periods, dental and oriental medical doctors. 784(89.0%) of the 881 questionnaires were resident of which 704 cases (79.9%). This should actually be 89.0% were regarded for analyses as being reliable data. Results: More than 20% of residents were exposed to radiation, laser, disinfectants, anesthetic gas, and anticancer drugs during their training periods with preventive neasures for each of these hazards taken in about 10% of the cases of the lesser hazards but in about 35% for the hazards from radiation and laser. 91.1% of residents had experience of needlestick injuries during theirtraining periods with over 36.3% being exposed to patients with infection during that time. The cases contracting HBV and HCV diseases due to pricking are 2.3% and 0.6% respectively. The average number of night duties per month during a one-year resident's period was about 10. The average sleeping time on duty during a one-year residents was less than 4 hours. 28.4% of respondents were not satisfied with their occupation, 96.5% delt tired from overwork and 69.5% wanted to change their occupation to another that would pay the same salary. Conclusion: Residents are exposed to harmful physical, chemical and biological factors, but the preventive care seldom undertaken. In addition, their overwork brings about lack of sleep which causes them problems when giving medical treatment to patients during their training periods. Despite the resident's interest in an occupation as a doctor, many intend to select other occupations if they can receive the same salary. According to the above results, preventative systems and measures should be prepared with environmental improvements for residents, and proper rewards for their overwork should be accomplished

間歇的 運動에 의한 脫水 및 水分攝取의 生理的 效果

朴哲浩,朴吉俊,李相于,金永明,朴贊熙,玄松子,呂南會,朴相甲,金榮俊 東亞大學校附設스포츠科學硏究所 1989 스포츠科學硏究論文集 Vol.7 No.-

This study aims at revealing the physiological responses of dehydration (DH) and rehydration (RH) in intermittent exercises at the work intensity of 70% HR max. First, with general student public, three times of exercise (each for 20 minutes) at the given work intensity were taken, with a break for 25 minutes respectively. Their heart rate, rectal temperature and plasma electrolyte concentration both DH and RH were measured. Second, in two groups of athletes and non-athletes, 9 rounds of exercise (for 100 minutes) and 8 breaks (for 60 minutes) were taken, with RH forced 10 times to compensate for the subjects' water loss. Their change in sweat loss and plasma electrolyte concentration as well as the IVDP(Intensive Voluntary dehydration Phenomenon) were experimented. The summary of this research follows. 1) Mean heart rate and rectal temperature in intermittent exercises were higher at DH than at RH, growing up at the increasing level of DH. 2) RH saw no change in the plasma concentration of Na+, K+ and Cl-, while DH observed a significant increase. 3) HCO₃made a significant decrease at DH before growing up. 4) Mg++ had no change, while Ca++ increased significantly at RH and DH. 5) Lactate showed an increase with significance at RH and DH, especially greater at DH. 6) Osmotic pressure increased meaningfully at DH. 7) Anion gap increased significantly at DH and RH. 8) On the other hand, when the forced RH was held, the group of athletes had greater sweat loss per body surface area than that of non-athletes. 9) The athletes' plasma concentration of Na+ and Cl- revealed a clear decrease. 10) There was seen no significant change in the plasma concentration of K+, Mg++ and Ca++ in both groups. 11) The IVDP occurred at the RH of 2.3ℓfor athletes and more than 2.5ℓfor no-athletes.

중이 수술후 청력 변화에 대한 임상적 고찰

홍석찬,강성호,이광희 건국대학교 의과학연구소 1994 건국의과학학술지 Vol.4 No.-

statistical analysis of bone conduction loss in chronic otitis media has not been exactly reported until now. Authors studied the relationship between the preoperative bone conduction hearing level and age, nature of middle ear and temporal bone pathology, pneumatization of mastoid in 97 ears of chronic uppurative otitis media performed middle ear surgery at Konkuk University Hospital from March 1992 to December 1992. The results were as following: The mean bone conduction threshold was 16.2±12.4dB. In the cases of ossicular defect, bone conduction loss was greater in total destruction than in partial destruction with statistical significance. Among ossicular defect, incus destruction group showed more bone conduction loss than intact incus group with statistical significance. There was no difference of bone conduction loss according to pathologic findings in middle ear cavity and mastoid antrum, but pathologic groups showed more bone conduction loss than control group with normal temporal bone pneumatization with statistical significance. Comparing pneumatization of mastoid antrum and mastoid process, there was statistically significant bone conduction loss in orders of pneumatic type, diploic type, sclerotic type, cholesteatoma cavity. There was no difference of bone conduction hearing level according to age, sex, and duration of disease process with statistical significance. The results suggest that the bone conduction threshold in chronic otitis media is influenced by artificial elevation due to conductive defect and can be improved by reconstructive surgery.Many patients being followed for chronic suppuration of the middle ear were observed to have sensorineural or mixed type hearing loss. The major cause of this bone conduction loss might be secondary to cochlear biochemical changes occuring through the round window membrane. But, clinical and statistical analysis of bone conduction loss in chronic otitis media has not been exactly reported until now. Authors studied the relationship between the preoperative bone conduction hearing level and age, nature of middle ear and temporal bone pathology, pneumatization of mastoid in 97 ears of chronic suppurative otitis media performed middle ear surgery at Konkuk University Hospital from March 1992 to December 1992. The results were as following: The mean bone conduction threshold was 16.2±12.4dB. Inthe cases of ossicular defect, bone conduction loss was greater in total destruction than in partial destruction with statistical significance. Among ossicular defect, incus destruction group showed more bone conduction loss than intact incus group with statistical significance. There was no difference of bone conduction loss according to pathologic findings in middle ear cavity and mastoid antrum, but pathologic groups showed more bone conduction loss than control group with normal temporal bone pneumatization with statistical significance. Comparing pneumatization of mastoid antrum and mastoid process, there was statistically significant bone conduction loss in orders of pneumatic type, diploic type, sclerotic type, cholesteatoma cavity. There was no difference of bone conduction hearing level according to age, sex, and duration of disease process with statistical significance. The results suggest that the bone conduction threshold in chronic otitis media is influenced by artificial elevation due to conductive defect and can be improved by reconstructive surgery.

기니픽에서 Kanamycin 이독성

박찬일,송영복,정봉진,박용호 충남대학교 의과대학 지역사회의학연구소 1999 충남의대잡지 Vol.26 No.2

To evaluate experimental kanamycin - induced ototoxicity, changes of hearing loss were observed after administration of kanamycin in guinea pig, using auditory brainstem rcsponse(ABR) audiometry. Kanamycin(KM), 50mg/kg/day(group I), 100mg/kg/day(group Ⅱ), 200mg/kg/day(group Ⅲ) and 400mg/kg/day(group IV), was injected intramuscularly in each group and ABR thresholds were measured every other days through 50 days after the initial administration of KM. The injection of KM was discontinued at the day when the ABR threshold was increased more than 40 dB in each guinea pig. After the discontinuation of KM injection, ABR thresholds recovered progrssively to the base line level before the day 50 in group I and Il. But the ABR threshold changes were progressed after discontinuation of KM injection and finally they showed no responses in group III and IV. The results suggested that high dose KM administration could result progressive and irreversible hearing loss after the discontinuation of KM administration.

고주파용 칩인덕터 유리소재 개발

김영호,송민석,윤영진,박찬욱,이재열 嶺南大學校 工業技術硏究所 2003 工業技術硏究所論文集 Vol.31 No.1

The glass systems of SiO_2-Al_2O_3-B_2O_3-K_2O were fabricated with the composition of SiO_2 65∼76wt%, B_2O_3 20∼30wt%, Al_2O_3 0.3∼4.5wt%, and K_2O 0.5∼2.5wt% for mother glass of high frequency chip inductor. The glasses were prepared by quenching the melt from 1500℃ and analyzed by X-ray diffraction. The specimens were prepared with composites of ball milled glasses powder mixed with 0∼50wt% of alumina powder. After heat treating at 850℃∼950℃, sintering behaviors were observed by measuring the density of specimens as a function of temperature and the amount of alumina. Dielectric constants and dissipation factors were evaluated with HP-4192A as well as other crucial properties such as strength, softening point and thermal expansion. The density, dielectric constant and dissipation factor of specimen were 2.61g/㎟, 5.9∼6.2 and 0.0013∼0.0016 at 1㎒, respectively.