논문편 - 식생활편 : 제주도지역의 식품금기에 관한 조사연구 Ⅱ - 분만기를 중심으로 -

김기남,모수미 ( Ki Nam Kim,Su Mi Mo ) 대한가정학회 1977 Human Ecology Research(HER) Vol.15 No.1

OFDMA 시스템 상향링크의 레인징 부호 검출 성능 향상 기법

김기남,김진호,조성준,Kim Ki-Nam,Kim Jin-Ho,Cho Sung-Joon 한국통신학회 2006 韓國通信學會論文誌 Vol.31 No.6A

Orthogonal Frequency Division Multiple Access(OFDMA) 시스템에서 사용자는 초기 레인징 과정을 통해서 상향링크의 시간 동기를 획득한다. 기지국 수신기는 특정 사용자의 심볼에 시간 동기화하고 나머지 사용자들의 심볼들은 동기화된 시간과의 오차만큼 Symbol Timing Offset(STO)이 존재한다. 각 사용자의 STO에 의해서 한 OFDMA 심볼 내에 선형적인 위상 성분이 발생하고, 이 위상 성분들이 합성되어 다중 접속 간섭(Multiple Access Interference : MAI)으로 작용한다. 이런 MAI는 기지국 수신기의 레인징 부호 검출 성능을 열화 시키는 원인이 된다. 본 논문에서는 각 사용자의 STO에 의해 발생하는 위상 성분의 추정 및 보상을 위한 공통 레인징 부호를 사용하는 초기 레인징 심볼 구조를 제안한다. 공통 레인징 부호를 사용해서 각 사용자의 STO에 의해 발생한 위상 성분의 평균을 추정하고 보상한다. 이 방식은 MAI의 영향을 억제하여 기존 방식보다 더 향상된 레인징 부호 검출 성능을 제공한다. In Orthogonal Frequency Division Multiple Access (OFDMA) systems, timing synchronization in uplink is accomplished by an initial uplink synchronization called an initial ranging process. The Base Station's receiver synchronizes the symbol timing to specific user's symbol and the other user's symbols have some Symbol Timing Offset (STO). Linear phase shift is occurred by each user's STO in an OFDMA symbol. The Multiple Access Interference (MAI) caused by the summation of each user's linear phase shift degrades the performance of ranging code detection. In this paper, we propose an initial ranging symbol structure with common ranging code for phase shift estimation and compensation. We car estimate the average of phase shift that is generated by each user's STO and compensate this phase shift by using common ranging code. This scheme will suppress the MAI and provide better detection performance than conventional process.

퇴행성 요추 질환에서 후측방 유합술과 후방 추체간 유합술의 비교

송경진(Kyung-Jin Song),김기남(Ki-Nam Kim),송광훈(Kwang-Hun Song),이준모(Jun-Mo Lee) 대한정형외과학회 2006 대한정형외과학회지 Vol.41 No.4

목적: 이분절 이하의 퇴행성 요추부 질환에서 후측방 유합술과 후방 추체간 유합술의 임상적, 방사선학적 결과를 분석하여 두 수술을 비교해 보고자 하였다. 대상 및 방법: 이분절 이하의 요추 유합술 및 척추경 나사못 고정술, 감압술을 시행받고 추시관찰이 가능하였던 90명을 대상으로 하였으며 이 중 요추 후측방 유합술을 실시한 환자 45명을 Ⅰ군, 요추체간 유합술을 실시한 환자 45명을 Ⅱ군으로 분류하였다. 결과: 요추 전만도는 Ⅰ군에서 술 전 36.84±8.31°, 술 후 40.58±7.61°, 최종 추시 시 35.73±7.61°이었고, Ⅱ군에서는 31.53±7.09°, 39.11±7.21°, 35.47±7.76°이었다. 골유합은 Ⅰ군에서 45예 중 41예(91.1%), Ⅱ군에서는 45예 중 43예(95.6%)에서 얻었다. 합병증은 Ⅰ군에서 11예(24.4%), Ⅱ군에서는 1예(2.2%)에서 발생하였다. 결론: 이분절 이하의 퇴행성 요추부 질환에서 실시한 후측방 유합술과 후방 추체간 유합술 모두에서 만족할 만한 골유합률과 임상적 결과를 보였고, 두 군 사이의 유의한 차이는 없었다. 요추 전만도와 합병증에서는 후방 추체간 유합술에서 더 좋은 결과를 얻었으나, 임상과 방사선적 결과에 대해서는 좀 더 장기적인 연구가 필요하리라 생각된다. Purpose : This study compared the surgical treatment results between posterior lumbar interbody fusion (PLIF) and posterolateral fusion (PLF) with pedicle screw fixation in degenerative lumbar spinal disorders. Materials and Methods : In 45 cases of PLF (group Ⅰ) and 45 cases of PLIF (group Ⅱ), lumbar lordosis, segmental lordosis, bone union and complications were considered to be an evaluation criterion. Kim's functional evaluation scale was used for the clinical results. Results : The average lumbar lordosis in group I was 36.84±8.31° preoperatively, 40.58±7.61° postoperatively and 35.73±7.61o at the last follow up. On the other hand, the respective changes in the average lumbar lordosis were 31.53±7.09°, 39.11±7.21°, and 35.47±7.76° in group Ⅱ. Definitive solid union was obtained in 41 cases in group Ⅰ (91.1%) and 43 cases in group Ⅱ (95.6%). The rate of complications was 24.4% (11 cases) in group I and 2.2% (6 cases) in group II, and a satisfactory functional outcome were obtained in 43 cases (95.6%) in group Ⅰ and 41 cases (91.1%) in group Ⅱ. Conclusion : Both PLF and PLIF on short segment fusion provided satisfactory bone union and clinical results. In segmental lordosis, there were no significant differences between the two groups. However, PLIF was more effective in preventing lumbar lordosis and complications than PLF. A longer term follow up will be needed to evaluate the adjacent segmental degeneration and maintenance of the sagittal balance.

BIM DATA 표준화를 위한 결정요인에 관한 연구

김기남(Kim, Ki-Nam),서희창(Seo, Hee-Chang),김재준(Kim, Jae-Jun) 대한건축학회 2010 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.30 No.1(구조계)

대학생의 스트레스 수준과 식행동의 관계

김기남(Ki Nam Kim),백영아(Young Ah Baek),조진숙(Jin Suk Cho) 충북대학교 생활과학연구소 2009 생활과학연구논총 Vol.13 No.1

A survey was carried out to investigate relationship between stress level and dietary behavior of university students, in order to obtain baseline data for the development of an education program. Subjects included 214 male and female students who attended Chungbuk National University. The gender distribution of subjects was 43.0% males and 57.0% females, and BMI showed 16.8% overweight and 9.4% obesity. For the 26 items of stress test, stress scores were highest in the order of body images(2.37), future career(2.29) and the same gender friend(2.20) out of 4.0 in females, and academic problem(2.30), future career(2.21) and economic problem(2.20) in males. For dietary behaviors, skipping breakfast(48.1%) and 'eating too much in the evening' were the main problems of them. In the relation between stress and dietary behavior, higher stress level influenced negatively on dietary behavior significantly : especially each stress due to future career, body image, academic or economic problem influenced on the degree of concern about high caloric food consumption and regret for eating too much. In conclusion, an education program should be developed and offered for each high stress group, in order to improve dietary behavior for university students.

충북지역 당뇨 환자의 영양지식, 당뇨합병증 예방지식 및 관련된 요인

김기남(Ki Nam Kim),윤정옥(Jeong Ok Yun) 충북대학교 생활과학연구소 2009 생활과학연구논총 Vol.13 No.1

The purpose of this study was to investigate nutrition knowledge, preventive knowledge of diabetes complications and related factors among type 2 diabetic patients. The study subjects were 83 patients with type 2 diabetes, aged over 20, in Chungbuk area. The gender distribution of subjects was 53.0% males and 47.0% females, and BMI showed 30.1% overweight and 34.9% obesity. At the present time of study, 37.3% of the subjects had more than one complications and the symptom that took the highest frequency among diabetes complications was 'retinopathy'(27.5%). Mean score of nutrition knowledge and preventive knowledge of diabetes complications was 9.7 out of 15 and 7.5 out of 10 , respectively. Correlation by Pearson's coefficient between nutrition knowledge and preventive knowledge of diabetes complications showed high correlation(r=0.31, p<0.01). For the factors influencing diabetes control, a group with diabetes education showed significantly higher score of preventive knowledge about diabetes complications and better blood glucose control compared to the other group without education. In conclusion, diabetes education should be offered for diabetic patients in order to improve their diabetes knowledges and blood glucose control.

PARAFAC 분해를 이용한 블로그 공간 분석

김기남 ( Ki-nam Kim ),김상욱 ( Sang-wook Kim ),김진우 ( Jin-woo Kim ) 한국정보처리학회 2011 한국정보처리학회 학술대회논문집 Vol.18 No.1

c본 논문에서는 블로그 공간을 텐서로 표현하고, 이를 분석한다. 분석 결과에 따르면, PARAFAC 분해를 통하여 특정 주제를 나타내는 커뮤니티들을 올바르게 파악할 수 있었으며, 각 커뮤니티에서 영향력 있는 블로그들과 키워드들, 그리고 권위 있는 포스트들을 식별할 수 있었다.

해상 통신 기지국을 위한 TVWS용 광대역 안테나

김기남(Ki-nam Kim) 한국통신학회 2014 한국통신학회 학술대회논문집 Vol.2014 No.1

최근 해상통신시스템의 성능개선을 위한 연구가 활발히 진행되고 있다. 이 논문에서는 해상 통신 기지국용 TVWS(TV White Space) 광대역 안테나를 제안하였다. 제안한 안테나는 두 개의 공진주파수를 가지는 모노폴(Moopole) 복사체로 구성하였다. 제안한 안테나의 제작은 유전율 4.3, 두께 1.6 ㎜ FR4 기판을 이용하였다. TVWS 대역 470 ㎒~860 ㎒의 중심 주파수 660 ㎒에서 정재파비 2.0, 이득 0 dBi의 우수한 특성을 얻었다. 제안한 안테나는 TVWS 해상통신시스템 안테나로 적용이 가능할 것이다. Recently there have been much interest in the performance improvement of maritime communication system. In this paper, we proposed broadband TVWS(TV White Space) Antenna for base station of maritime communication system. The proposed antenna was composed Monopole radiator which have independent two resonance frequencies. The fabricated antenna was used a FR4 substrate with Permittivity of 4.3 and a gain 0 dBi in center frequency 660㎒ of 470 ㎒~860 ㎒. Proposed antenna can be adapted to maritime TVWS antenna system.

계피식이가 고지혈증 유도 흰쥐의 지질대사 및 혈소판 응집에 미치는 영향

김기남(Ki Nam Kim),박양순(Yang Soon Park),장나리(Na Ri Chang),전진영(Jin Young Cheon),강은경(Eun Kyoung Kang) 충북대학교 생활과학연구소 2007 생활과학연구논총 Vol.11 No.2

The purpose of the present study was to investigate effect of dietary cinnamon on serum lipids and platelet aggregation in hyper-cholesterolemic rats. Sprague-Dawley rats were fed with hyper-lipidemic diet for 4 weeks in order to induce hyper-lipidemia, followed by feeding experimental diets for additional 4 weeks. Cinnamon in experimental diets was prepared by drying and milling. Cinnamon powder was added to experimental diets at the level of 2% and 5%. ALT and AST was significantly decreased in both cinnamon 2% and cinnamon 5% groups compared to control group. HDL-cholesterol was increased significantly while LDL-cholesterol was significantly decreased in both cinnamon 2% and 5% groups. Platelet aggregation was decreased significantly in cinnamon 5% group. The present observation indicates that cinnamon might be helpful for the prevention and treatment of hyper-lipidemia and platelet aggregation.

고 콜레스테롤 식이를 먹인 흰쥐에 있어서 솔잎의 급여가 체내 콜레스테롤과 중성지방 수준 및 혈소판 응집에 미치는 영향

김기남(Ki Nam Kim),전지혜(Jee He Jeon),허소정(So Jong Heo),강은경(Eun kyoung Kang) 충북대학교 생활과학연구소 2007 생활과학연구논총 Vol.11 No.2

  This study was conducted to investigate hypo-cholesterolemic effect of dietary pine in rats fed cholesterol supplemented diets. Sprague-Dawley rats were fed with hyperlipidemic diet for 4 weeks in order to induce hyperlipidemia, followed by the feeding of experimental diets for additional 4 weeks. Pine of experimental diets was prepared by drying and milling. Pine powder was added to experimental diets at the level of 5% and 10%. Serum total cholesterol was significantly decreased in pine 5% group compared to control or pine 10% groups. Serum triglycerides was significantly decreased in pine 10% group. Platelet aggregation was significantly decreased by pine 5% and 10% supplementation. In conclusion, dietary pine might be helpful for the prevention and treatment of hyper-lipidemia and platelet aggregation.