• 근관절건강학회지
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• 제19권3호
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• pp.350-361
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• 2012

Purpose: The purpose of this study is to explore the level of bone mineral densities of the femur neck and to identify factors affecting bone mineral density of the femur in Parkinson's disease (PD) patients. Methods: Participants were 121 PD patients visiting the outpatient clinic of D University Hospital in B City. Bone mineral density was measured at the femur neck by using a dual-energy x-ray absorptiometry. The serum vitamin D level, the amounts of milk intake, caffeine intake, cigaret smoking, and alcohol consumption, and the number of steps taken daily were measured. Past and present disease history, the medication history, and duration of the disease were also collected. The level of disability was obtained by neurologists using the Hoehn and Yahr stage and the Unified Parkinson's Disease Rating Scale. Results: Among PD patients, 57% had osteopenia and 15.7% had osteoporosis. The bone mineral density of the femur was associated with weight, serum vitamin D level, age, and working status. Conclusion: The identification of weight and serum vitamin D level as important predictive factors emphasizes the importance of balanced nutrition for PD patients.

• 대한지역사회영양학회지
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• 제6권3호
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• pp.317-330
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• 2001

The purpose of this study was to figure out the characteristics of dietary habits and lifestyles related to the development of insulin resistance syndrome(IRS). The participants in this study were 595 adults with one or more abnormal data from a health examination and 215 normal adults. When IRS was defined as a condition in which the subjects have 2 or more abnormalities among obesity, hyperlipidemia, hypertension and hyperglycemia, the prevalence rate was 37.8%. We classified the 595 adults by the number of components of IRS components they had, the higher age and obesity index they had. Total cholesterol and glucose levels in the blood were also positively related to the number of IRS components. IRS subjects tended to practice less habitual drinking and more exercise and weight control. Coffee consumption and dining out frequency were also lower in the IRS group. An analysis of food habits by odds ratio indicated that total food score was better in the IRS group. However, it appeared that food habits such as \"frequent snacking\" and \"never rejecting offered foods\" need to be improved in IRS subjects. Other undesirable food habits were related to the consumption of eggs, dairy products, fried foods, garlic and onion. Dietary intake of Ca, Fe, riboflavin, Vit A, and energy were less than 75% of the Korean recommended allowance for more than half of the subjects. Nutrient intake was lower, Ca/P ratio from food intake was worse in the IRS group. Our results indicated that nutrition counseling for IRS need to be focused on balanced food intake to supply sufficient amount of each nutrient.nt of each nutrient.

• Journal of Nutrition and Health
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• 제41권4호
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• pp.341-352
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• 2008

The number of school lunch-supported children who belong to low-income families has been rapidly increased in Korea. This study was aimed at evaluation of nutritional status of school lunch-supported elementary school children. One hundred school lunch-supported children and 119 non-supported children of fourth to sixth year class in 3 elementary schools in Gyeongbuk rural area were selected, and surveys were conducted twice, i.e., once during school term and once during summer vacation in 2006. Food consumption survey during school term was carried out through an interview by dieticians at school-lunch time using a 24-hour recall method, and the survey during summer vacation conducted by recording food intakes for three days by children. Nutrient intakes were calculated using CAN-Pro 3.0 program. School lunch-supported children showed higher rate of skipping breakfast and rather irregular meal time as compared to non-supported students. Eating alone was more frequent in school lunch-supported children than in nonsupported children. The average nutrient intakes and nutrient adequacy ratios were lower in supported children than in non-supported children. During term, percentages of nutrient intakes provided by school-lunch were higher in supported children than in non-supported children. Intakes of energy nutrients were within acceptable macronutrient distribution ranges, but proportion of carbohydrate intake increased during vacation. Analysis of patterns of food intakes based on major food groups (dairy, meat, grain, fruit, vegetable) indicated that meals during term were more balanced as compared to meals during vacation. In conclusion, food behaviors and nutrient intakes of school lunchsupported children were inferior to those of non-supported children during term and during summer vacation. They were provided with more nutrient intakes from school lunch during term as compared to non-supported children. Therefore, it is necessary not only to keep meal support program during vacation but also to provide a proper nutrition education as a part of school lunch program to improve nutritional status and food behaviors of school lunch-supported children.

• Journal of Nutrition and Health
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• 제57권1호
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• pp.105-119
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• 2024

본 연구는 우리나라 성인 남녀에서 관상동맥질환의 주요 예측 지표인 AIP와 식품군 섭취의 관련성을 분석하였다. 본 연구에서는 40-79세의 성인 남녀 133,381명을 대상으로 AIP 5분위 그룹에 따른 식품군 섭취량을 제시하였으며, 그 결과 AIP가 높은 그룹에서 낮은 그룹에 비해 곡류, 김치/피클류의 섭취가 높았고, 콩류, 종실류, 육류, 난류, 생선류, 우유 및 유제품 등의 섭취가 낮은 경향을 보였다. 본 연구는 한국인의 식사와 관상동맥질환 위험도 간의 관계에 대한 중요한 정보를 제공하며, 관상동맥질환 예방을 위해 다양한 식품군이 포함된 균형 잡힌 식사가 중요함을 시사한다. 본 연구 결과는 관상동맥질환을 예방할 수 있는 식사지침 제시를 위한 기초자료로 활용될 수 있을 것이다. 추후 연구를 통해 한국인의 식사패턴을 분석하여 심혈관질환 발생 및 사망과의 관련성을 조사하고, 이를 통해 한국인의 심혈관질환 예방에 기여할 수 있을 것으로 기대한다.

• 한국컴퓨터정보학회논문지
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• 제16권11호
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• pp.245-253
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• 2011

화석 연료의 무분별한 사용으로 환경이 심각하게 오염되고, 화석 연료의 고갈에 대한 문제가 대두됨에 따라서 화석 연료에 대한 문제를 해결 할 수 있는 대체 에너지원에 대해 관심이 집중되기 시작하였다. 현재 신재생 에너지 중에서 가장 각광을 받고 있는 에너지는 중에 하나가 풍력에너지이다. 풍력에너지 발전단지와 기존의 전력 발전소는 소비되는 전력에 대한 생산의 균형을 맞춰야하며, 풍력에너지단지에서 균형적인 생산을 하기 위해서는 풍력에너지에 대한 분석 및 예측이 필요하다. 이를 위해서 데이터마이닝 분야의 예측 기법이 활용 될 수 있다. 본 논문에서는 풍력 데이터를 이용하여 발전 패턴을 예측하기 위해 SOM(Self-Organizing Feature Map) Clustering 기법과 의사결정나무(decision tree)를 이용한 연구를 진행하였다. 즉, 1) 풍력 데이터의 누락된 데이터와 이상치 데이터를 처리하기 위하여, 전처리 과정을 수행하였고, 이 과정에서 특징 벡터를 추출하였다. 2) 전처리 단계를 거쳐 정제되고 정규화된 데이터 집합을 MIA(Mean Index Adequacy) 척도와 SOM Clustering 기법에 적용하여 대표 발전 패턴을 찾아내고 각각의 데이터에 해당하는 대표 패턴을 클래스 레이블로 할당하도록 하였다. 3) 의사결정나무 기반의 분류 기법에 데이터 집합을 적용시켜 새로운 풍력에너지에 대한 분석 및 예측 모델을 생성하였다. 실험 결과, 의사결정나무를 통한 풍력에너지 발전 패턴을 예측하기 위한 모델을 구축하였다.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2011년도 춘계학술발표대회
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• pp.576-579
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• 2011

무선센서네트워크는 여러 분야에 사용되고 있으며 그 특성상 에너지를 효율적으로 사용할 수 있도록 설계되어야 한다. 무선 센서들은 한 번 설치되면 다시 교환할 수 없으며 제한된 배터리를 활용하여 운영된다. 따라서 네트워크 수명을 늘리기 위해서는 이러한 센서들의 효율적 활용이 필수적이다. BCDCP 에서는 CH(클러스터 헤드)가 BS(베이스스테이션)에 모든 데이터를 전송한다. BCDCP는 적은 규모의 네트워크에서는 잘 동작하지만 큰 규모에서는 무선 통신을 위한 에너지 소모가 많아 적절하지가 았다. TBRP 는 큰 규모의 네트워크에서는 잘 동작하지만 다중 홉 전송에 따는 에너지 고갈 현상이 빨리 발생한다. 본 논문에서는 균형화된 에너지 소모를 통해 네트워크 수명을 늘리기 위한 기법인 CETRP 를 제안하였다. CETRP 는 클러스터 헤드를 트리구조로 선정하여 에너지 효율을 극대화하였으며 다른 기법과 성능을 비교하였다.

• 한국항행학회논문지
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• 제11권4호
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• pp.461-472
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• 2007

유비쿼터스 센서 네트워크 (USN)의 노드에서 노드의 에너지가 한정되어 있기 때문에 센서 네트워크의 수명을 연장하기 위해서는 각 노드의 에너지 소모를 가능한 균일하게 하여야 한다. USN에서 라우팅 프로토콜로서 많이 도입이 되어 지고 있는 AODV는 각 노드의 잔여 배터리 전력량을 고려하지 않고 경로를 채택하므로 각 노드의 불균형적인 전력 소모 현상이 심각하게 발생한다. 본 논문에서는 AODV를 수정하여 각 센서 노드의 패킷 중계량에 따라 적응적으로 그 중계량을 제어하여, 특정 노드에 트래픽이 몰리는 것을 방지하고 전체 네트워크의 수명을 높일 수 있는 기법을 제안한다. 시뮬레이션을 통해 제안한 알고리즘을 센서 네트워크에 적용했을 때, 각 센서 노드의 패킷 중계량이 비슷하게 유지됨으로써 USN의 동작 수명을 높일 수 있음을 검증하였다.

• Nutrition Research and Practice
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• 제5권5호
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• pp.443-449
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• 2011

Instant noodles are widely consumed in Asian countries. The Korean population consumed the largest quantity of instant noodles in the world in 2008, However, few studies have investigated the relationship between instant noodles and nutritional status in Koreans. The objective of this study was to examine the association between instant noodle consumption and food and nutrient intake in Korean adults. We used dietary data of 6,440 subjects aged 20 years and older who participated in the Korean National Health and Nutrition Examination Survey III. The average age of the instant noodle consumers (INC) was 36.2 and that of the non-instant noodle consumers (non-INC) was 44.9; men consumed more instant noodles than women (P<0.001), With the exception of cereals and grain products, legumes, seaweeds, eggs, and milk and dairy products, INC consumed significantly fewer potatoes and starches, sugars, seeds and nuts, vegetables, mushrooms, fruits, seasonings, beverages, meals, fishes, and oils and fats compared with those in the non-INC group. The INC group showed significantly higher nutrient intake of energy, fat, sodium, thiamine, and riboflavin; however, the INC group showed a significantly lower intake of protein, calcium, phosphorus, iron, potassium, vitamin A, niacin, and vitamin C compared with those in the non-INC group. This study revealed that consuming instant noodles may lead to excessive intake of energy, fats, and sodium but may also cause increased intake of thiamine and riboflavin. Therefore, nutritional education helping adults to choose a balanced meal while consuming instant noodles should be implemented, Additionally, instant noodle manufacturers should consider nutritional aspects when developing new products.

• 한국시뮬레이션학회논문지
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• 제20권4호
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• pp.31-40
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• 2011

센서 노드는 악의적인 공격자들에 의해 물리적인 공격들에 쉽게 노출된다. 공격자는 훼손 노드를 이용하여 센서 네트워크에 다양한 공격을 발생시킬 수 있다. 그 중 응용 계층에서 발생하는 허위 보고서 삽입 공격은 훼손된 노드를 통해 네트워크 내에 위조 보고서를 주입한다. 주입된 위조 보고서는 BS까지 전달될 경우 허위 경보뿐만 아니라 노드의 불필요한 에너지 소모를 유발한다. 이러한 공격을 방어하기 위해 통계적 여과 기법은 BS까지 전달되는 허위 보고서를 전달 과정 중 가능한 빨리 여과시키기 위해 제안되었다. 이 기법의 성능 향상을 위해 제안된 기법 중 경로 갱신 기법은 통계적 여과 기법의 탐지 능력 유지하고 노드의 균형 있는 에너지 소모를 위해 제안되었다. 본 논문은 경로 경신 방법에서 경로 갱신에 필요한 에너지의 효율적인 소비를 위해 보안 경로 주기 결정 방법을 제안한다. 보안 경로 주기를 선택하기 위해 BS에서 센서 노드들의 홉 수와 보고서 전송량을 고려하여 평가 함수를 통해 결정한다. 그리고 시뮬레이션을 통해 위 3가지 기법들과 제안 기법을 비교하여 에너지 효율성을 평가한다. 그러므로 제안 기법은 보안 경로 설정을 유지하면서, 네트워크 내에 균형 있는 에너지 소비의 효율을 높인다.

• Journal of Nutrition and Health
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• 제37권10호
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• pp.899-907
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• 2004

This study was performed to investigate dietary habits and nutritional intake according to body mass index (BMI) of female college students. The subjects were 1361 students with a mean age of 20.4 years residing in Seoul and Kyonggui area. BMI (kg/) between $\geq$ 18.5 to $\leq$ 23 was considered as nonnal, < 18.5 as underweight and > 23 as overweight. The subjects had a mean BMI of 20.0 kg/$m^2$ and 25% of them were classified as underweight group, 67% as normal group and 8% as overweight group. Dietary intake was assessed by food frequency method and consumption of foods and nutrients was analyzed. Frequency of meal skipping was higher in the overweight group, 16.1 % of the overweight group skipped dinner. Also, the frequency of snack intake was lowest in the overweight group. The overweight group consumed less meat and fish than the normal and underweight groups. The total number of foods consumed in a day was also significantly lower than that of the underweight and normal group. The overweight group consumed less energy, protein, fat, phosphorus and niacin than the underweight and normal groups. The overweight group took iron and sodium intake lower than the normal group. Mean intakes of nutrients except clacium and iron in all three groups were over Korea RDA. The NAR (nutrient adequacy ratio) value of all nutrients, except calcium, was lower in the overweight group when compared to the normal and underweight groups, and the MAR (mean adequacy ratio) of the overweight group was 0.89, which was lower than 0.92 of the underweight and 0.93 of the normal group. The above results indicated that the deficiency of major nutrients such as calcium and iron could be inducde by less kinds of consumed foods and frequent meal skipping including dinner in the overweighted group. Therefore, balanced nutrient intake is required to maintain skeletal health and prevent anemia in overweighted female college students aged twenties.