• 반도체디스플레이기술학회지
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• 제15권3호
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• pp.72-77
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• 2016

As the semiconductor production technology has gradually developed and intra-market competition has grown fiercer, the caliber of Si Wafer for semiconductor production has increased as well. And semiconductors have become integrated with higher density. Presently the Si Wafer caliber has reached up to 450 mm and relevant production technology has been advanced together. Electrostatic chuck is an important device utilized not only for the Wafer transport and fixation but also for the heat treatment process based on plasma. To effectively control the high calories generated by plasma, it employs a refrigerant-based cooling method. Amid the enlarging Si Wafers and semiconductor device integration, effective temperature control is essential. Therefore, uniformed temperature distribution in the electrostatic chuck is a key factor determining its performance. In this study, the form of refrigerant flow channel will be investigated for uniformed temperature distribution in electrostatic chuck.

• Preventive Nutrition and Food Science
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• 제15권4호
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• pp.340-347
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• 2010

To standardize the recipes for healthy fast food market potentiality, a sensory acceptability analysis, instrumental texture analysis and nutritional evaluation were performed on Korean style mung bean pancake (MPC) and modified MPC containing squid meat and soybean. Optimal ingredient formulation was revealed to be 34% mung bean, 49% pork and 17% vegetables for traditional MPC, and 21% pork, 66% squid meat and 13% soybean for modified MPC, using response surface methodology. Flavor and hardness correlated highly with overall acceptability, rather than appearance and color of traditional MPC. Higher squid levels raised adhesiveness, springiness and resilience of modified MPC, but the higher soybean levels decreased these textural attributes. Protein, lipid and total calories of modified MPC were lower than those of traditional MPC. Degree of gelatinization of modified MPC was superior to traditional MPC.

• Journal of Nutrition and Health
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• 제10권3호
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• pp.48-55
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• 1977

A communal feeding program has been managed mostly by the Sae Ma Eul Women's club of agricultural cooperatives during busy days of farming in rural Korea and spreading rapidly throughout the country since a couple of years ago. Four communal feeding villages from 3 provinces in Korea were purposively selected. The food and nutrient intake of 524 participants were measured by the Precise-Weighing method for 3 days from October $7{\sim}16$ 1976. Total amount of food consumed per participant per two meal day was 1456 grams, greater than national average. Two meals that the communal feeding program provided to farmers under the intensive work of harvesting were supplying enough calories and all other nutrients except the riboflavin. There was a variation among CF villages but overall the nutrient intake was good and had balanced meals. This investigation is a part of the study on nutrition supported by a grant from USAID.

• 한국컴퓨터정보학회논문지
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• 제24권9호
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• pp.29-34
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• 2019

In Recently, as the interest in health has increased and the spread of smart phones has become common, the development of smart health care related contents has been active. In this paper, we introduce the design, implementation and effects of game-based content that can make walking exercise fun in the Internet of Things environment. This content calculates the consumed calories by walking the stairs with the Beacon installed, and incorporates games to encourage continuous fun activities. It also provides event functions that enable on-off-line coordination. The goal of this content is to enable busy modern people to exercise lightly, funly, and constantly in the surrounding activity space. The effect of this content has been confirmed through the review of many users participating in offline events. This content is expected to be able to converge with various types of healthcare systems with the expansion of the application space.

• 한국컴퓨터정보학회논문지
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• 제24권9호
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• pp.43-49
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• 2019

Today, with the development of the internet of things, wearable devices related to personal health care have become widespread. Various global information and communication technology companies are developing various wearable health devices, which can collect personal health information such as heart rate, steps, and calories, using sensors built into the device. However, since individual health data includes sensitive information, the collection of irrelevant health data can lead to personal privacy issue. Therefore, there is a growing need to develop technology for collecting sensitive health data from wearable health devices, while preserving privacy. In recent years, local differential privacy (LDP), which enables sensitive data collection while preserving privacy, has attracted much attention. In this paper, we develop a technology for collecting vast amount of health data from a smartwatch device, which is one of popular wearable health devices, using local difference privacy. Experiment results with real data show that the proposed method is able to effectively collect sensitive health data from smartwatch users, while preserving privacy.

• 한국컴퓨터정보학회논문지
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• 제24권1호
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• pp.159-166
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• 2019

Recently, the advanced development of smart devices has increased the interest in health-care, and many people are paying more attentions to disease prevention than disease treatment. Among these prevention methods, the bare body movement has received much attention, and especially walking exercise is attracting much attention because it is enjoyable without any restrictions on place and time. Walking exercise is generally divided into two types: walking on the ground and climbing the stairs. Walking up the stairs consumes much more calories compared to walking on the ground. These walking exercises have the advantage that they can be easily performed by male and female without special equipments or economic considerations. However, there is a lack of applications and systems that accurately determine such walking and stair walking and measure momentum according to stair walking. In this paper, we designed and implemented a real-time walking status analysis system using smartwatch's, pedometer, smartphone's barometer and beacons.

• 식품과학과 산업
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• 제54권2호
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• pp.102-114
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• 2021

In Korea, a sugar company was first established at Pyongyang in 1920. But the real sugar industry began in 1953 when CJ Cheiljedang produced sugar at its Busan plant. Currently, three companies, CJ Cheiljedang, Samyang Corp., and TS Corp. are participating in the sugar industry. Sugar production increased from 647 tons in 1953 to 1,423 thousand tons in 2019. This means that the sugar industry has been grown by 2,200 times compared to 1953. Before 1953, all sugar consumed in Korea was imported, but now about 300 thousand tons, a 20 percent of sugar produced annually is exported. Population increase, economic growth, and food industry development contributed to the growth of sugar industry. However, recently the sugar industry has been stagnated due to the decrease of population and economic growth rate, and campaign of sugars and calories reduction. To overcome it, the continued development of various sugar application using emerging biotechnology is needed.

• 한국토양비료학회지
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• 제11권2호
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• pp.67-73
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• 1979

배추 재배(栽培) 토양에의 석회시용(石灰施用)이 가리평형(加里平衡) activity ratio와 가리(加里) 흡수(吸收)에 미치는 영향(影響)을 요약(要約)해 보면 다음과 같다. 1. 토양의 가리(加里) 평형(平衡) activity ratio는 소석회(消石灰)를 10a 당 160kg를 시용(施用)했을 때 그 값은 상승(上昇)한다. 일반적(一般的)으로 석회시용(石灰施用)과 가리(加里) 비료(肥料) 시용(施用)은 $AR^k_e$를 상승(上昇)시키는데 복합적(複合的)인 효과가 있음을 확인(確認)했다. 2. 치환성(置換性) K와 전기 전도도(電導度)는 석회시용(石灰施用)에 의(依)해서 증가된다. 석회(石灰) 시용(施用) 토양의 치환성(置換性) K 평균치(平均値)는 0.71m.e./100g(건토(乾土))이고 대조 토양(土壤)의 평균치(平均値)는 0.64m.e./100g(건토(乾土))이다. 전기 전도도(傳導度)는 석회(石灰) 시용(施用) 토양에서 $766{\mu}mho$이고 대조 토양은 $750{\mu}mho$이다. 3. 석회시용(石灰施用)에 의(依)해서 $AR^k_e$가 상승(上昇)하는 이유(理由)는 토양의 고액상(固液相) 간(間) 가리(加里) 평형계(平衡系)에 있어서 K, Ca, Mg을 고상(固相)으로 부터 액상(液相)으로 방출(放出)시키기 때문에 평형액(平衡液)의 $K^+$와 $Ca^{2+}+Mg^{2+}$ 농도(濃度)가 높아진데 기인(起因)된다고 본다. 4. K의 Ca에 의(依)한 치환(置換) 방출(放出)에 소요(所要)되는 exchange energy는 석회(石灰)를 시용(施用)한 토양에서 무가리구는 -3887, 200 kg $K_2O/ha$ 구는 -3778, 350 kg $K_2O/ha$ 구에서는 -3737 calories/chemical equivalent이고 대조구 토양은 가리(加里) 수준(水準)에 따라서 각각 -3983, -4392, -4228 calorie이다. 5. 식물체(植物體)의 K 흡수량(吸收量), 건물중(乾物重)은 석회(石灰)를 시용(施用)한 토양에서 생육(生育)한 시료(試料)가 대조구보다 많은 경향(傾向)이다.

• 한국식품영양과학회지
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• 제46권4호
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• pp.501-512
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• 2017

어린이 식생활안전관리 특별법에 근거한 고열량 저영양 식품의 관리 정책이 본격적으로 시행된 이후, 2010년 3월 말과 2012년 7월 말 기준 생산 판매가 지속된 어린이 기호식품, 단종 어린이 기호식품과 신규 어린이 기호식품을 대상으로 단위용량당 평균 열량 및 영양성분(포화지방, 단백질, 당류, 나트륨)의 개선 여부를 분석한 주요 결과는 다음과 같다. 첫째, 2010년 3월 말과 2012년 7월 말 기준 생산 판매가 지속된 어린이 기호식품은 총 6,174개, 이 중 고열량 저영양 식품은 1,249개(20.2%)였다. 또한, 단종 어린이 기호식품은 총 510개, 이 중 고열량 저영양 식품은 206개(40.4%)였으며, 신규 어린이 기호식품은 총 1,173개, 이 중 고열량 저영양 식품은 총 371개(31.6%)로 조사되었다. 둘째, 생산 판매가 지속된 어린이 기호식품 중 평균 열량 또는 영양성분에서 긍정적인 변화만이 1개 항목 이상 나타난 식품유형은 빵류, 아이스크림류, 과채음료, 즉석섭취식품(이상 1개 항목), 혼합음료(2개 항목), 빙과류(3개 항목)였다. 반면 부정적인 변화만이 1개 항목 이상에서 나타난 식품유형은 과자, 초콜릿류, 유산균음료(이상 1개 항목), 캔디류(2개 항목)였다. 한편 어육소시지, 탄산음료, 유탕면류 및 국수, 피자에서는 긍정적인 변화와 부정적인 변화가 동시에 나타났다. 다만 단위용량당 평균 열량 또는 영양성분의 변화는 대부분 1 kcal 또는 1 g 미만이었다. 셋째, 열량 및 영양성분 함량의 긍정적인 변화는 어린이 기호식품 중에서도 고열량 저영양 식품에서 더욱 뚜렷하게 나타났다. 생산 판매가 지속된 고열량 저영양 식품 중 평균 열량 또는 영양성분에서 긍정적인 변화만이 1개 항목 이상 나타난 식품유형은 과채음료, 유산균음료, 혼합음료(이상 1개 항목), 빙과류(3개 항목), 아이스크림류(3개 항목), 즉석섭취식품(3개 항목)이었다. 반면 부정적인 변화만이 1개 항목 이상 나타난 식품유형은 캔디류, 초콜릿류, 탄산음료(이상 1개 항목)였다. 한편 빵류, 유탕면류 및 국수, 피자의 평균 열량 또는 영양성분에서는 긍정적인 변화와 부정적인 변화가 동시에 관찰되었다. 단위 용량당 평균 열량 또는 영양성분의 변화는 대부분 1 kcal 또는 1 g 미만이었으나, 일부 식품유형(빙과류, 빵류, 즉석 섭취식품, 피자)에서는 상대적으로 큰 변화가 발견되기도 하였다. 마지막으로 신규 어린이 기호식품이 단종 어린이 기호식품보다 평균 열량 또는 영양성분에서 긍정적인 변화만이 1개 항목 이상 나타난 식품유형은 빵류(3개 항목)와 탄산음료(2개 항목)였으며, 부정적인 변화만이 1개 항목 이상 나타난 식품유형은 초콜릿류(4개 항목), 아이스크림류(4개 항목), 즉석섭취식품(3개 항목)이었다. 과자, 캔디류, 과채음료, 혼합음료, 유탕면류 및 국수, 피자에서는 긍정적인 변화와 부정적인 변화가 동시에 관찰되었다. 본 연구 결과 고열량 저영양 식품 관리 정책이 본격적으로 실시된 이후에도 어린이 기호식품의 단위용량당 평균 열량 및 영양성분상에 일부 부정적인 변화를 확인할 수 있었다. 이는 식품회사들이 자율적으로 제품의 긍정적인 개선을 적극 실천하기보다는, 현행 고열량 저영양 식품 분류 기준에 저촉되지 않는 선에서라면 일부 부정적인 방향으로의 제품 변화 역시 시도하고 있음을 시사한다. 따라서 고열량 저영양 식품 관리 정책이 어린이 기호식품의 영양개선을 통하여 어린이를 위한 건강한 식생활 환경 조성에 미친 영향은 아직까지 일부 식품 유형에만 제한적이라 할 수 있다.

• 동아시아식생활학회지
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• 제15권1호
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• pp.1-10
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• 2005

Dietary behavior, body mass index(BMI) and nutrient intake status of 185 boys and 205 girls in 3rd grade middle school students in Daegu area were analyzed. Boys were 168.6cm tall and weighed 61.3kg on the average and girls 158.5cm and 54.4kg, respectively. From their BMIs, 17.9% were classified as the underweight, 54.2% as the average, 14.7% as the overweight and 13.2% as the obesity. The average energy intake per day was 2222.6 kcal for boys, 1796.2 kcal for girls which were 83.3% and 86.6% of the RDA, respectively. Composition rate of carbohydrate, protein, fat in relation to energy intake was 62.4 : 16.5 : 21.1 for boys and 58.8 : 16.0 : 25.2 for girls. Protein was taken low and carbohydrate and fat were high in this study. Particularly, fat intake rate of girls was high. Calcium, iron, vitamin A, and vitamin B2 did not meet the RDA and especially calcium was taken 63.9% for boys and 54.01 % for girls. Most of the students have tendency to eat irregularly and to overeat. For the nutrients intake, calories and calcium intake were lower than the RDA regardless of gender and iron intake was not enough for girls only. In relation to BMI, obesity group students were taking lower calories and proteins than the normal students were. No consistent trend was shown for boys about nutrient intake in relation to eating speed. Students had a correct perception of their body image which was similar to that of their mothers. Nutrient average intake is under the average and the percentile under 70% of RDA was high contrary to the fact that nutrient intake like calcium and iron was exceedingly important particularly in the growth process. Therefore, nutritional education for the proper intake of nutrients was required for the students in Daegu area. Especially, education has to be focused on the balanced diet and correct food choices for the proper dietary behaviors.