• Journal of Nutrition and Health
• /
• 제29권7호
• /
• pp.689-702
• /
• 1996

The purpose of this experiment was to compare the effects of tryptophan administration on nutritional status of female rats which consumed reserpine and 6% casein diet with different carbohydrate contents(87%, 65%, 44% respective). Final body weight, body weight gain, FER, plasma amino acid concentration and microsomal cytochrome P 450 content in liver were measured and microscopic structure of hepatocytes was observed. In low-protein diet, the higher the carbohydrate content of diet was, the lower the damage was in the rat's liver. Tryptophan administration after dose of reserpine induced more effective recovery from liver damage of rats in high carbohydrate diet group than that in low carbohydrate diet group. In conclusion, the general nutritional assessments such as final body weight and body weight gain provided better estimate of the degree of structural changes in hepatocytes than functional assessment such as plasma amino acid concentration or liver microsomal cytochrome P450.

• 대한가정학회지
• /
• 제45권7호
• /
• pp.49-60
• /
• 2007

The purpose of this study was to analyze the weight measurement tasks according to children's ages and whether 4-to 6-year-old children use proper measurement equipment to measure weight. The study subjects were 105 preschool children: 37,38, and 30 4-, 5-, and 6-year-old children, respectively. The results showed that young children use 3 to 4 strategies. They used a strategy to estimate objects visually on the first step in measurement by direct comparison. On the second step, in measurement by nonstandard unit, they held up objects with one hand or two hands. That is, two strategies were shown in measuring objects with hands in this second step. On the third step, which is measured by standard unit, they used a strategy to choose the equal arm balance out of suggested measurement equipment.

• 한국식품저장유통학회지
• /
• 제1권1호
• /
• pp.37-43
• /
• 1994

A microcomputer system consisting of 16-bit microcomputer, PCL-711S interface board, censors, and converters have been set up in order to automatically measure temperature, humidity and weight loss which are major variables of storage of apple. This system was operated by PC-LabDAS software. It has been possible to measure continuously the weight loss of Fuji apple stored in CA with the weight converter made by a miniature load cell and a strain amplifier. The temperature was checked by a k-type thermocouple and Pt 100 $\Omega$ RTD, and humidity by PQ653JAl humidity sensor. It has been possible to set up a linear equation which showers high correlationship between the estimate of temperature, weight humidity and the output of the converter in that r2 is more than 0.99. Transpiration rate, a significant factor of quality deterioration for CA storage of apple, can be estimated with these values.

• Journal of Information Processing Systems
• /
• 제17권6호
• /
• pp.1083-1096
• /
• 2021

Compressed sensing-based matching pursuit algorithms can estimate the sparse channel of massive multiple input multiple-output systems with short pilot sequences. Although they have the advantages of low computational complexity and low pilot overhead, their accuracy remains insufficient. Simply multiplying the weight value and the estimated channel obtained in different iterations can only improve the accuracy of channel estimation under conditions of low signal-to-noise ratio (SNR), whereas it degrades accuracy under conditions of high SNR. To address this issue, an improved weighted matching pursuit algorithm is proposed, which obtains a suitable weight value u_op by training the channel data. The step of the weight value increasing with successive iterations is calculated according to the sparsity of the channel and u_op. Adjusting the weight value adaptively over the iterations can further improve the accuracy of estimation. The results of simulations conducted to evaluate the proposed algorithm show that it exhibits improved performance in terms of accuracy compared to previous methods under conditions of both high and low SNR.

• 사상체질의학회지
• /
• 제20권1호
• /
• pp.89-99
• /
• 2008

1. Objectives The objective of this study is to offer some standards for the distinction of Sasang Constitutions through analyzing the characteristics of their body shapes that are classified by BMI. 2. Methods The subject of this study were 1341 female and 927 male patients who aged from 17 to 80 in Seoul, Pusan, Daeku and Jeonju. They were treated with Sasang Constitutional medicine. 8 circumferences, 5 widths, weight, height of their body were measured with measuring tape, large sliding caliper, scale and anthropometer. Collected 15 anthropometric datas were analyzed by Analysis of Contingency table, ANOVA and Duncan test. 3. Results (1) The Body shapes according to obesity grade are classified Underweight type that BMI is less than 18.5, Normal weight type that BMI is $18.5{\sim}23.0$ and Overweight type that BMI is mote than 23.0. (2) Soeumin represents Underweight type and Taeeumin represents Overweight type regardless of gender differences. Soeumin stands for Normal weight type in women and Soyangin stands for Normal weight type in men. (3) In case of Underweight type, 13 measurements are not suitable to estimate Sasang Constitutions regardless of gender differences. (4) In case of Normal weight type, 12 measurements except for W3 in women and W7 in men are suitable to estimate Sasang Constitutions. And there are no gender differences in Soyangin and Soeumin, but there are gender differences in Taeyangin and Taeeumin. (5) In case of Overweight type, 9 measurements except for C2, C5, C6, W7 in women and 12 measurements except for W3 in men are suitable to estimate Sasang Constitutions. And there are no gender differences in 4 Sasang Constitutions. 4. Conclusions From the above results, we have to consider not only gender differences and age groups but also obesity grade when we distinguish Sasang Constitutions.

• 보건행정학회지
• /
• 제26권4호
• /
• pp.352-358
• /
• 2016

Summary measures of population health (SMPHs) have been used to estimate the burden of diseases. Among various type of SMPHs, disability adjusted life year (DALY) and healthy life expectancy (HALE) have been calculated in the global and national burden of disease studies. In order to calculate DALY and HALE, disability weight is an essential element. Disability weights quantify the level of disability for health states or diseases and have values between 0 (full health) to 1 (being dead). In this study, we reviewed the main disability weights studies and determined their meaning and limitations. Furthermore, we provided the whole process of typical disability weight study and reviewed key issues as follows: health state or disease description development, panel composition, valuation method, validation of disability weight, cross-cultural variability in health state or disease, and so on. The results from this study will be helpful to conduct future disability weight studies for adapting disability weights and developing new methodologies.

• 한국정보통신학회논문지
• /
• 제2권1호
• /
• pp.141-146
• /
• 1998

Recently, the computer vision such as part measurement, and product inspection is very popular to achieve the factory automation since the labor cost is dramatically increasing. In this paper, the diameter and the length of rope are measured by CCD camera which is orthogonally mounted on the ceiling. Two parameters which are the diameter and the length of rope are used to measure the weight of rope. If the weight of rope is reached to predetermined weight, the information is transmitted to PLC(programmable logic control) to cut the rope on the wheel. The cutting machine cuts the rope according to the information obtained from the CCD camera. To measure the diameter and length of rope on real time, the searching space for image segmentation is restricted the predetermined area according to the camera calibration position. Finally, to estimate the weight of rope, the knowledge base system which depends on the diameter, the length of rope, and weight relation between these information are constructed according to diameters of rope. This method contributes to achieve the factory automation, and reduce the production cost since the operators are unnecessary to measure the weight of rope by try-and-error method.

• Corrosion Science and Technology
• /
• 제23권3호
• /
• pp.228-234
• /
• 2024

Zinc wiping is a phenomenon used to control zinc-coating thickness on steel substrate during hot dip galvanizing by equipment called air knife. Uniformity of zinc coating weight in length and width profile along with surface quality are most critical quality parameters of galvanized steel. Deviation from tolerance level of coating thickness causes issues like overcoating (excess consumption of costly zinc) or undercoating leading to rejections due to non-compliance of customer requirement. Main contributor of deviation from target coating weight is dynamic change in air knives equipment setup when thickness, width, and type of substrate changes. Additionally, cold coating measurement gauge measure coating weight after solidification but are installed down the line from air knife resulting in delayed feedback. This study presents a coating weight control model (Galvantage) predicting critical air knife parameters air pressure, knife distance from strip and line speed for coating control. A reverse engineering approach is adopted to design a predictive, prescriptive, and descriptive model recommending air knife setups that estimate air knife distance and expected coating weight in real time. Implementation of this model eliminates feedback lag experienced due to location of coating gauge and achieving setup without trial-error by operator.

• 생물환경조절학회지
• /
• 제30권4호
• /
• pp.393-400
• /
• 2021

가축의 체중은 사료 요구량과 영양 상태를 평가하는 데 필요한 주요 지표에 해당한다. 본 연구는 한우의 3-D 영상으로부터 몸통 체적을 산출한 후 체중을 추정하고자 시도되었다. 한우의 3-D 영상 획득에 640×480 픽셀의 해상도, 44fps의 프레임속도 및 47°(H)×37°(V)의 화각을 갖는 TOF 카메라가 사용되었다. 획득된 3-D 영상에서 배경과 몸통 분리, 이상치 제거 등의 전처리 과정을 거쳐서 몸통에 대한 격자 영상을 얻었다. 또한 각각의 격자에 깊이 정보를 적용한 수치적분으로 몸통 체적을 결정하였다. Calibration dataset에서 체중과 몸통체적의 선형회귀에 대한 결정계수는 0.8725로 나타났다. 한편 몸통 체적에 월령을 설명 변수로 추가한 체중 추정의 중회귀 모형에서 결정계수는 0.9083으로 나타났다. Validation dataset에서 중회귀 모형을 이용한 체중 추정의 MAPE와 RMSE는 각각 8.2%, 24.5kg으로 나타났다. 결과적으로 체중 추정을 위한 회귀 모형의 성능이 개선되고, 체중 추정에 소요되는 노력이 절감됨을 고려한다면 3-D 영상에서 결정된 몸통 체적이 한우의 체중 추정에 유효한 변수로 사용될 것이다.

• 한국정보전자통신기술학회논문지
• /
• 제9권4호
• /
• pp.330-336
• /
• 2016

본 논문에서는 원하는 정보 신호를 추정하기 위해서 수정 Bartlett방법에 대해서 연구하였다. Bartlett방법은 구속 장을 1로 설정하고, 시간지연을 보상하여 원하는 정보 신호를 추정하는 방법이다. 수정 Bartlett방법은 최적 가중치 갱신치를 지연시간 보상에 적용하여 최적의 도래방향 신호를 추정하는 방법이다. 최적가중치는 선형구속최소분산 방법을 사용하였다. 모의실험을 이용하여 본 연구에서 제안한 방법과 기존 Bartlett 과 MUSIC방법의 성능을 비교 분석한다. 모의실험조건은 배열 안테나 소자 수 6개와 9개, 원하는 정보신호 3개[-15o, 0o, 15o]에서 원하는 신호를 추정한다. 원하는 정보 신호 추정에서 본 연구에서 제안한 방법이 기존의 Bartlett 과 MUSIC방법보다 분해능이 우수함을 입증하였다.