• Journal of the Korean Society of Food Culture
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• v.6 no.4
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• pp.413-419
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• 1991

This study aims to evaluate the degree of malnutrition of children by three nutritional indicators-Weight for Age, Hight for Age, Weight for Height. The results are as follows; The average height and weight of children are much lower than Korea average height and weight. In terms of Weigh for Age, 20-40% of the samples belongs to below-2 standard deviation from the mean of reference group. 90% of the samples falls into the region below the mean. The standard deviation score indicates negative sign for eighty to ninety percent of the samples. The malnutrition of the samples is also confirmed in terms of Height for Age. In terms of Weight for Height, the mean of the samples is not significantly different from that of the reference group. Tests of the nutritional status under basis of three nutritional indicators show that approximately 50% of the samples had suffered from malnutrition and 17% of the samples have suffered from malnutrition.

• Proceedings of the Korea Concrete Institute Conference
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• 1999.10a
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• pp.107-110
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• 1999

The objective of this study is to obtain characteristics of early age pore-structure and carbonation of concrete using ground granulated blast furnace slag (GGBFS). The durability of GGBFS concrete should be evaluated for wide use of the GGBFS. As for that evaluation, an analysis on early age pore-structure characteristics of GGBFS concrete are very important, Carbonation depths of GGBFS concrete, which are known to be larger than that of OPC, are different according to replacement ratios and fineness of slag. Because sea sand as fine aggregate is much used recently, it is also necessary to analyze characteristics of carbonation of GGBFS concrete. In this study, The micro-pore structure formation characteristics of GGBFS concrete are obtained through the test of GGBFS mortars with different fineness and replacement ratio of GGBFS. The carbonation of GGBFS concrete is also investigated by acclerated carbonation test for early age GGBFS concrete.

• Journal of Korea Multimedia Society
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• v.10 no.12
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• pp.1726-1732
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• 2007

The rapid proliferation of wireless networks and mobile computing applications has changed the landscape of network security. Anomaly detection is a pattern recognition task whose goal is to report the occurrence of abnormal or unknown behavior in a given system being monitored. This paper presents an efficient rough set based anomaly detection method that can effectively identify a group of especially harmful internal attackers - masqueraders in cellular mobile networks. Our scheme uses the trace data of wireless application layer by a user as feature value. Based on this, the used pattern of a mobile's user can be captured by rough sets, and the abnormal behavior of the mobile can be also detected effectively by applying a roughness membership function with the age of the user profile. The performance of the proposed scheme is evaluated by using a simulation. Simulation results demonstrate that the anomalies are well detected by the proposed scheme that considers the age of user profiles.

• Journal of Environmental Science International
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• v.10 no.3
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• pp.173-178
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• 2001

The aim of this paper is to evaluate users benefit values of theme park using Travel Cost Method with special reference to Woobang Tower Land in Taegu for the estimation of economic values. This research is mainly based on questionnaire survey of 100 users of the theme park. Socio-economic factors such as income, year of education, annual income, age and money(travel cost) are analysed from 5 residential areas of the respondents. Multiple regression analysis was used for the evaluation of annual number of park visitings based on the analysis. The regression model shows NV = $\alpha$+$\beta_1$TC+$\beta_2$INC+$\beta_3$EDU+$\beta_4$AGE (NV : Annual Number of Visitings, TC : Travel Cost, INC : Annual Income, EDU : Years of Education, AGE : Age). Regarding to visitors demand curve based on the equation showed that annual economic values of Woobang Tower Land was estimated as 50billion Korean Won.

• Structural Engineering and Mechanics
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• v.37 no.5
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• pp.459-473
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• 2011

The study of the early age concrete properties is becoming more important, as the thermal effects and the shrinkage, even in the first hours, could generate cracks, increasing the permeability of the structure and being able to induce problems of durability and functionality in the same ones. The detailed study of the stresses development during the construction process can be decisive to keep low the cracking levels. In this work a computational model, based on the finite element method, was implemented to simulate the early age concrete behavior and, specially, the evaluation of the cracking risk. The finite element analysis encloses the computational modeling of the following phenomena: chemical, thermal, moisture diffusion and mechanical which occur at the first days after the concrete cast. The developed software results were compared with experimental values found in the literature, demonstrating an excellent approach for all the implemented analysis.

• The Journal of the Korean dental association
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• v.18 no.3 s.132
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• pp.201-206
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• 1980

The contents of paper are over all incidence informed from 100 case of oral cancer patients who are diagnosed histopathologically in out patient clinic, department of oral surgery, Seoul university hospital during the period of 12 months in 1979. The patients were classified for the clinical evaluation and it's assessment as like age distribution, arising regional section, and groups divided according with final histopathological diagnosis. The following are obtained results of studies 1) As regards of age distribution of oral cancer, 5th decade age group presented the highest incidence, 6th and 4th decade age groups revealed next high incidency. 2) The most common sites of oral cancer were mandible body (33%), maxillae (26%), hard palate and buccal cheek (10% each), oral floor (8%) etc. 3) According to the histopathological diagnosis, cancer of oral cavity, squamous cell carcinoma is disclosed one of the most frequently presented malignantic oral tumor (58%), and nexts are mucoepidermoid carcinoma (15%0, malignant lymphoma (10%), adenocystic carinoma (5%), osteogenic and osteolytic sarcoma were 4% each. 4) In sexual differencies of oral cancer, more prominent incidency is showed in male (68%) than in female (32%).

• Journal of the Korean Society of Safety
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• v.11 no.4
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• pp.127-134
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• 1996

Recently, in Korea the birthrate is declining and the average life span has been increasing. Thus, compared to the previous periods nowadays, older people are required to work. Even elderly people are rejoining the workforce. Korean companies set the retirement age between 55 and 60 years of age, however, accidents occur frequently. Thus, it becomes necessary to evaluate the ability of the elderly person. Since the required function of the worker varies from job to job the evaluation of the capability must also be conducted according to the desired functions. One of the methods used in this study is the continuous control knob to evaluate the tracking control ability to investigate the relationship of manual dexterity and age. The result of the study Indicates that the manual dexterity decreases with age. However, there are differences among individuals. The individuals lifestyle affected the manual dexterity of that individual. As a result, a company may use the manual dexterity as an measure to evaluate the elderly persons work ability.

• Korean Journal of Poultry Science
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• v.18 no.3
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• pp.209-218
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• 1991

An experiment was conducted to examine the efficacy of spray vaccination against Newcastle disease (ND). Four different coarse sprayers and four different diluents were compared in particle size, immune response and respiratory reaction. The smaller particle size of sprayer was, the better efficacy was and the more respiratory reactions were appeared. Of four diluents, antibody responses and resistance to challenge were higher with skim milk and gelatin, respectively .When day-old broiler chicks with maternal antibodies were vaccinated by coarse. sprayer B with B$_1$strain diluted in 1% skim milk, they showed 100% protection at two weeks of age and 50% from 4 to 8 weeks of age. Another group which boostered at 2 weeks of age by drinking water vaccination showed 100%, 70%, 50%, 40% protection at 2, 4, 6, 8 weeks of age, respectively. Although spray vaccination against ND in this experiments showed similar efficacy, compared to conventional methods, this method may not be appropriate in our field condition because of respiratory vaccinal reaction.

• Journal of the Korean Home Economics Association
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• v.38 no.10
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• pp.133-142
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• 2000

The subjective hand and preference of enzyme hydrolyzed denim fabrics were evaluated using the scale developed. The factors affecting consumer's taste for polyester fabrics were analyzed by the statistical technique. The effects of alkaline hydrolysis on the properties of polyester fabrics were evaluated by subjective and objective hand measurements. The lower the age of evaluators, the more sensitive their feeling. As the age decreased, evaluators felt fabrics become flossy and soft surface property is smooth, flexible, warm, refined. They didn't catch the sense of durability, moisture related property and sense of shape recovery. The lower the age, the fabric was more preferred. Women were more sensitive and consistent than men.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2010.05b
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• pp.51-52
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• 2010

In this study, it is confirmed that the use of equivalent age method can be applied to predict the early-age strength in case of using the new early strength concrete developed for the reduction of construction work period by our company, in apartment.