• 한국군사과학기술학회지
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• 제4권2호
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• pp.9-16
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• 2001

In this paper, general design process for Tracked Fighting Vehicle has been suggested. Stress analysis and optimal design for ply angle of IFV's composite upper hull has been calculated using KMA CIFV and it is contained exploratory development of design process. In this point, this paper applied composite to IFV's upper hull. Finite element mesh has been made using Matlab program, and we have analyzed stress based on the given material properties and ply arrangement. For each load condition, load distribution in plane and failure index are calculated by using Tasi-Hill criterion, which is composite failure criterion and analyzing change of failure index as change of ply angle. Finally, optimal ply angles of upper hull are calculated using KMA CIFV. We can estimate the decrease of weight for IFV's upper hull.

• 한국산림과학회지
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• 제107권2호
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• pp.184-192
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• 2018

본 연구는 중부지역 일본잎갈나무의 수간중량 추정식을 개발하기 위하여 지역별 개체목의 지위와 직경을 고려하여 표준지를 선정한 뒤, 총 55본의 표본목을 선정하였다. 표본목의 실측자료를 이용하여 수피외생중량, 수피외건중량, 수피내 건중량 및 이용중량 등 네종류의 중량을 추정하기 위해 11개의 모형을 비교 분석하였다. 중량을 추정하기 위해 흉고직경을 변수로 이용하는 경우, 흉고직경과 수고를 이용하는 경우, 재적을 이용하는 경우의 3개 변수에 따라 모형을 구분하였다. 최적의 모형은 적합지수와 추정의 표준오차 및 잔차의 분포를 이용하여 모형의 이행능력을 비교하여 선정하였다. 그 결과, 1변수인 흉고직경을 이용하는 식은 $W=a+bD+c^D^2$이며 설명력은 90~92%를 나타냈고, 흉고직경과 수고를 이용한 2변수식은 $W=aD^bH^C$으로 97~98%의 설명력으로 2변수 모형이 1변수 모형 보다 높은 적합도를 보였다. 또한 전체수간에 대한 재적과 이용재적에 대한 식인 W = aV로 중량추정설명력이 98~99%으로 높게 나타났고 SEE도 7.7~17.5, CV(%)도 8.0~10.0으로 우세한 적합도를 보였다. 본 연구는 개체목의 중량정보 제공 및 임분단위의 중량 바이오매스추정식의 기초연구로 활용될 것으로 판단된다.

• 대한간호학회지
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• 제39권5호
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• pp.641-650
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• 2009

Purpose: This study was done to examine the difference in cancer screening with mammography and Papanicolaou smear according to Body Mass Index (BMI). Methods: The participants in this study were 5,912 women ages 40 to 69 yr, selected from the Korean Genomic Regional Cohort in Kangwon province. Mammography and Papanicolaou smear were assessed by questionnaire and body weight (kg) and height (m) measured to calculate BMI. Results: The distribution of BMI was as follows: low weight (1.5%), normal weight (31.1%), over weight (24.6%), mildly obese (36.4%) and severely obese (6.3%). After adjusting for age, education and monthly income, compared with normal weight women, overweight women (odds ratio [OR]=1.283, 95% confidence interval [CI]=1.089-1.513) and mildly obese women (OR=1.214, 95% CI=1.048-1.406) were less likely to have had mammography. In contrast to mammography, cancer screening with Papanicolaou smear was not significantly different by BMI. Conclusion: Obese women in rural areas are less likely to screen for breast cancer by using mammography than non obese women. To ensure regular screening for breast cancer, health care providers need to give scrupulous care to obese women and remove barriers originated from obesity. Also, educational and clinical implications are considered to increase the Papanicolaou smear rate.

• Nutrition Research and Practice
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• 제1권2호
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• pp.131-142
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• 2007

The purpose of this study was to investigate differences in the body composition, dietary habits, daily intake of nutrients and clinical blood indices in female college students by body mass index of normal weight, overweight and obese. The subjects of this research were 141 respondents of a survey carried out on students, and subjects were given 60 minutes to answer questionnaires, by recording their own answers. The average heights and weights of subjects by BMI were 162.17 cm, 52.73 kg in normal weight group, 162.35 cm, 62.22 kg in overweight group and 161.72 cm, 69.82 kg in obesity group, respectively. As for the survey daily of meals, starving breakfast and kind of snacks of subjects were significantly different among the groups by BMI. In animal protein food intakes, meat intake was the highest 'every day' food consumed by subjects, and there was a significant difference in distribution of BMI among subjects. Fruits, and greenish and yellow vegetables intakes were the highest 'every day' foods indicated by the normal weight group. Consumption of carbonated beverages and juices showed a significant difference among groups by BMI. The average of total-cholesterol was the overweight group was the higher value. There was a significant difference in diastolic blood pressure and systolic blood pressure among the groups by BMI. Average daily calories intake levels were insufficient and the intake ratio of carbohydrates, protein, and fat was the normal weight group 68 : 17 : 15, the overweight group 64 : 18 : 18 and the obese group 73 : 14 : 13. Results of the daily vitamin intake analyses displayed riboflavin, niacin, vitamin C, and folic acid levels lower than the RI levels. Fe intake was the normal weight group 81%, overweight group 76%, obese group 59% of the RI level. Therefore, it is necessary for college students to establish regular meals, good quality snacks and consuming more vitamin and mineral nutritions for optimal health conditions.

• 한국의류산업학회지
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• 제25권1호
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• pp.52-61
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• 2023

This study aimed to present data for the development of a shoe which is suitable for plus-size men (BMI 25kg/m² or higher) and to analyze the characteristics of each type of foot. The results of the study are as follows. To assess foot shape in relation to weight gain, participants were categorized into normal weight, overweight, and obese weight groups, according to their BMI indexes. Those in the normal weight group exhibited a smaller value than the overweight or obese weight group in all items. As a result of the cluster analysis, by type of foot, of the obese men category, men were classified into four BMI index groups: members of the type 1 group had a BMI index of 157 (18.4% of total sample), while for type 2 the figure was 213 (25.0% of sample), for type 3 it was 259 (30.4%), and for type 4 it stood at 224 (26.3% of total sample). Those from the type 1 group had thin ankles with narrow toes and flattened sides. Type 2 group members had thick ankles with well-developed outer feet and thick sides. Those within the type 3 group had medium-thick ankles with narrow feet but wide inner feet. Finally, those in the type 4 group had feet with a slanted side, as well as thick ankles, wide feet, and flat sides. Among these categories, the type 3 group members indicated the highest distribution.

• 자동차안전학회지
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• 제5권1호
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• pp.50-55
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• 2013

When it comes to commercial vehicles, their unique characteristics - center of gravity, size, weight distribution - make them particularly vulnerable to rollover. On top of that, conventional heavy vehicle brake exhibits longer actuation delays caused in part by long air lines from brake pedal to tires. This paper describes rollover prevention algorithm that copes with the characteristics of commercial vehicles. In regard of compensating for high actuating delay, predicted rollover index with short preview time has been designed. Moreover, predicted rollover index with longer preview time has been calculated by using road curvature information based on environment information. When rollover index becomes larger than specific threshold value, desired braking force is calculated in order to decrease the index. At the same time, braking force is distributed to each tire to make yaw rate track desired value.

• 한국임상약학회지
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• 제12권1호
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• pp.7-12
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• 2002

Pharmacokinetic parameters and dosage of aminoglycosides (AGs) were studied retrospectively in 36 patients with neutropenic fever after stem cell transplantation in Seoul National University Hospital from July 1996 to June 2001. AGs pharmacokinetic parameters were calculated with steady-state peak and trough serum drug concentrations by the method of Sawchuk and Zaske et at. The calculated aminoglycosides volume of distribution and clearance were greater than population value $(0.36\pm0.06\;L/kg,\;116\pm32\;ml/min/1.73\;m^2,\;respectively)$. The average dosage of aminoglycosides required to maintain optimal serum AGs concentration was also greater than recommended dose in insert paper. The average dosage of amikacin was $11\pm2.1$ mg/kg every 12 hours (In case of tobramycin, $2.09\pm0.37$ mg/kg every 8 hours or $2.59\pm0.20$ mg/kg every 12 hours). The relationship between AGs volume of distribution and sex, serum albumin (g/dl), body mass index $(kg/m^2)$, body weight change $(\%)$, the amount of fluid inpu (ml/kg/day), the degree of hematocrit decrease $(\%)$ were studied respectively. Univariate anlysis revealed that body mass index $(kg/m^2)$, the amount of fluid input (ml/kg/day) and the degree of hematocrit decrease $(\%)$ had significant correlation with aminoglycosides volume of distribution. But sex, serum albumin, body weight change $(\%)$ had no significant correlation with aminoglycosides volume of distribution.

• Journal of Biosystems Engineering
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• 제28권2호
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• pp.127-136
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• 2003

The top-to-bottom compression strength of corrugated board box is the most important mode of loading during it's no, and it depends largely on the edgewise compression strength of the corrugated board in the cross-machine direction and to a considerable extent on the flexural stiffness in both principal directions (CD; cross-machine direction, MD; machine direction) of the corrugated board. Corrugated board is a sandwich structure with an orthotropic property. The purpose of this study was to elucidate the principal design parameters for board combination of corrugated board from the viewpoint of bending strength through the finite element analysis [FEA] fur the various corrugated board. In general, the flexural stiffness [FS] in the MD was 2-3 times larger than that in the CD, and the effect of liner for the FS of corrugated board was much bigger than that of corrugating medium. The flexural stiffness index [FSI] was high when the stiffness of liner was in the order of inner, outer, and middle liner in double-wall corrugated board [DW], and the effect of the stiffness arrangement or itself reinforcement of corrugating medium on the FSI was not high. In single-wall corrugated board [SW] with DW. the variation of FSI with itself stiffness reinforcement of liner was much bigger than that with stiffness arrangement of liner. The highest FSI was at the ratio of about 2:1:2 for basis weight distribution of outer, middle, and inner liner if the stiffness of liner and total basis weight of corrugated board were equal in DW Secondarily. basis weight was in the order of inner, outer, and middle liner. However, the variation of FSI with basis weight distribution between liner and corrugating medium was much bigger than that with itself basis weight distribution ratio of liner and corrugating medium respectively in both DW and SW. md the FSI was high as more total basis weight was divided into liner. These phenomena fur board combination of corrugated board based on the FEA were well verified by experimental investigation.

• 한국측량학회:학술대회논문집
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• 한국측량학회 2004년도 추계학술발표회 논문집
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• pp.381-384
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• 2004

The goal of this study is to generate a landslide susceptibility map using GIS(geographic information system) based method. A simple and efficient algorithm is proposed to generate a landslide susceptibility map from DEM(digital elevation model) and existing maps. The categories of controlling factors for landslides, aspect of slope, soil, topographical index, landuse, vegetation are defined, because those factors are said to have relevance to landslide and are easy to obtain theirs sources. The weight value for landslide susceptibility is calculated from the density of the area of landslide blocks in each class. Finally, a map of susceptibility zones is produced using the weight value of all controlling factors, and then each susceptibility zone is evaluated by comparing with the distribution of each controlling factor class.

• 대한가정학회지
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• 제44권10호
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• pp.67-77
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• 2006

This study was performed investigate eating behaviors and their association with obesity in Korean elderly people. A total of 9,408 (male 4,487, female 4,921) Korean adults aged 40 to 69 years were interviewed and examined from May 2001 to Feb 2002. The subjects were classified into 4 weight status groups based on body mass index (BMI, $kg/m^2$): under weight, BMI<18.5; normal, $18.5{\leq}BMI\leq24.9$; overweight, $25.0{\leq}BMI\leq29.9$; obesity, $BMI\geq30.0$. Anthropocentric parameters, eating behavior, and preference of cooking method and taste were examined. In male, distribution of weight status by BMI was under weight 2.4%, normal 58.1%, over weight 36.7%, obesity 2.8%. As the BMI increased, the rate of skipping meal, snacks, and eating out were increased and the rate of eat alone was decreased. When compared according to the weight status by BMI, the frequency of the steamed, roasted, fried, seasoned, and soup intake rates were increases in the cooking methods and preference of greasy taste was increased by degree of obesity. In female, distribution of weight status by BMI was under weight 1.4%, normal 52.8%, over weight 38.6%, obesity 7.2%. There were differences in the rate of eating out, snacks, the frequency of fried food intake rates, and preferences of salty, hot, greasy taste according to the weight groups by BMI. In this results, we suggests that keep regular meal and keep away from the high-fat, salty, stimulative foods for prevent and administer the obesity in Korean adults meal and female.