• Korean Journal of Applied Biomechanics
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• v.19 no.3
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• pp.425-433
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• 2009

The purpose of this study was to investigate relation between fastball motion and longtoss motion, and the kinematical analysis using APAS(Ariel Performance Analysis System). Eight people(age: $21.2{\pm}3.6years$, height: $177.1{\pm}3.1cm$, weight $68.6{\pm}2.5kg$) participated in the experiment. Followings are the conclusion. In displacement of fore-aft on COG(Center of Gravity), fastball motion moved more forward than longtoss motion. In displacement of vertical on COG(Center of Gravity), fastball motion was lower than longtoss motion In velocity of right hand, greater release velocity was measured for fastball motion than for longtoss motion. In displacement of elbow and shoulder joint, more extended displacement was exhibited in fastball motion than longtoss motion. In displacement of trunk tilt, fastball motion showed foreward tilt, longtoss motion showed backward tilt. In stride, fastball showed longer than longtoss.

• Korean Journal of Childcare and Education
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• v.1 no.1
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• pp.83-101
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• 2005

The present study applied Bayley Scales of Infant Development to Infants with High Risk to investigate the effects of determinants such as variables related to demographic variable, prenatal and perinatal and postpartal environments, and developmental indices in infancy. First, mental and motor development index were high in infants whose mothers had high in education, mothers had not had a disease during the pregnancy, mothers had not taken medicine during the pregnancy. Second, mental and motor development index were high in infants who had used an oxygen inhaler, incubator, and in infants who had been given a timely birth. Third, mental and motor development index were higher in infants whose mumbling and the initial speaking was normal than in infants whose development was late.

• The Journal of the Convergence on Culture Technology
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• v.5 no.2
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• pp.337-344
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• 2019

The purpose of this study men and women 20 to 30 of 16 patients wearing thick insoles 5cm before and after squat exercise based on the angle of the knee joint(0-, 60-, 90-degree) was to observe the muscle activities. For this through the analysis of the rectus femoris EMG, vatus medialis vatus lateralis, tibialis anterior, gastrocnemius MVIC were quantified using. The results following results were obtained. After wearing the thick insole standing position(0') had increased EMG activity of vastus lateralis muscle, the knee angle is rectus femoris, vatus medialis, vastus lateralis, tibialis anterior, gastrocnemius muscles were increased muscle activity. thick insole of the ankle joint, causing plantar flexion forward weight distritbution by focusing is normally the body would lead to an array. When an array of everyday life, these abnormalities increases energy consumption, and muscle fatigue, increase will cause an imbalance in the muscles. Therefore, wearing thick insoles by changing the activity of the muscles may cause knee pain.

• Land and Housing Review
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• v.14 no.1
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• pp.67-82
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• 2023

Using the Artificial Neural Network model and Binary Logistic Regression model, this study investigates influence factors on the quality of life in terms of housing environment during the COVID-19 in Seoul. The results show that the lower the satisfaction level of housing policy, the lower the quality of life in the employment field and the lower the quality of residential field. On the other hand, permanent workers and self-employed respondents have experienced improvement in residential quality during the pandemic. A limitation of this study is associated with disentangling the causal relationship using the 'black box' characteristics of ANN method.

• Korean Association of Arts Management
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• no.56
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• pp.349-380
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• 2020

The paper is to assess the recent changes in Architectural Artworks system in two regional districts, Seoul and Gyeonggi Province, and to propose policies for further improvement. We focused on four aspects: overall pass rate, top-ranked artists' pass rate, proportion of artists ever passed, genre proportion artworks. It is observed that quality of artworks has improved, market monopolization has been eased, and entry to the market has become more active. However, sculptures accounted for the majority. Public art is gradually changing from 'decorative art' to 'site-specific art', and seeking harmony between architecture and surrounding landscape. To keep pace with this new trend, more institutional efforts should be made: fund raising to induce artwork supplies; introducing life-span concept to secure removal and deformation of artwork; imposing artists' follow-up services; imposing penalties against poor management; and authorizing the committee to choose exhibition sites.

• The korean journal of orthodontics
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• v.27 no.3 s.62
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• pp.421-430
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• 1997

Alveolar bone grows with development of tooth germs and roots; bone deposition occurs with tooth eruption. Bone components undergoes processes of resorption and deposition, and when the balance between them is disrupted, decrease in alveolar bone height or excessive bone deposition result. It has been hon that repositioning of teeth through orthodontic treatment can cause alveolar bone resorption which result in decreased alveolar bone height, and there have been many studies to evaluate such effects. X-ray films that could be replicated and standardized were chosen in clinical studies, and among them, bitewing films were used for objective evaluation of changes in alveolar bone level. Twenty subjects, 10 to 13-year- old (average 12.2) children with Cl I molar key, healthy oral condition, no congenital missing, no periodontal disease, and pre-and post-orthodontic bitewing films, were randomly selected for comparison of alveolar bone heights. Amounts of tooth and changes in alveolar bone heights were analyzed. The following results were obtained: 1. Amount of tooth movement in canine, premolar, and molar regions, changes in tooth axis, and changes in alveolar bone heights were measured, and the mean and median values were obtained. 2. When pre-and post-orthodontic alveolar bone levels were compared, larger changes were noticed in maxilla than mandible. 3. When mesio-distally compared, larger changes were observed in the distal sides of 3D3 and 4M3, mesial sides of 4M3 and 4D3, distal sides of 4D3 and 5M3, mesial sides of 5M3 and 5D3, md distal sides of 5D3 and 6M3. 4. When the amounts of tooth movements(TX, TY)and changes in tooth axis(A) were compared,34TX, 34TY, 34A of both sides in maxilla were greater, iud changes in alveolar bone level were greater than any other region.

• Clinical and Experimental Pediatrics
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• v.49 no.3
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• pp.312-316
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• 2006

Purpose : Growth hormone(GH) has been recognized as an effective treatment for short children born small for their gestational ages(SGA), and nowadays it has been widely used for the treatment of short children born SGA. The aim of this study is to assess the efficacy of GH treatment for the children born SGA. Methods : The study population was made of 40 short children born SGA with GH-treated(n=26) and untreated control group(n=14). In order to evaluate the effect of GH treatment, the changes in standard deviation scores(SDS) of the GH-treated group were compared to the changes in SDS before and after treatment from the control group in the same period. Results : There were no differences between the GH-treated group and the control group in gestational age, birth weight, chronological age, target height and the period of follow-up observation; however, the GH-treated group had lower height SDS($-3.3{\pm}0.9$) than the control group($-2.4{\pm}0.4$) before treatment(P<0.05). The GH-treated group had gained $1.2{\pm}1.0$ height SDS during GH treatment while the control group had gained $0.5{\pm}0.6$ height SDS. In the GH treatment group, HDL-cholesterol increased from $48.5{\pm}9.9mg/dL$ to $56.1{\pm}8.7mg/dL$(P<0.05) and LDL-cholesterol decreased from $88.1{\pm}23.3mg/dL$ to $76.4{\pm}19.4mg/dL$(P<0.05) after treatment. There were no changes in total cholesterol, triglyceride, free fatty acid and fasting blood sugar. IGF-I increased from $224.9{\pm}191.3{\mu}g/L$ to $443.2{\pm}152.5{\mu}g/L$(P<0.05) and IGFBP-3 also increased from $3.7{\pm}1.3mg/L$ to $5.6{\pm}1.2mg/L$(P<0.05). Conclusion : We conclude that growth hormone treatment is effective in the treatment of short children born SGA.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.29 no.1
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• pp.89-97
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• 1984

This study was carried out to investigate the effect of seasonal changes on some of the morphological and physiological characteristics, including the photosynthetic abilities and dark respiration, of young ginseng plants due to planting location under shading. The results obtained are as follows: 1. Seedlings and 2-year old plants planted in the back rows appeared to have broader leaf area, and their leaf weight greatly increased in September. Chlorophyll content was significantly reduced in September rather than in June and the plants in the back rows had more chlorophyll content than those in the front rows. 2. There was no difference in the light compensation point between the front and back rows in June, while in September the light compensation point of 2-year old ginseng leaves was much lower for plants in the back rows compared with those in the front rows. A difference in the light saturation point was not noticeable between plants in the front and back rows in June and September. But the light saturation point of 2-year old ginseng leaves at $15^{\circ}C$ was high in June, while it was high at $20^{\circ}C$ high in September. 3. Maximum photosynthetic ability was attained at $15^{\circ}C$ in June and at $20^{\circ}C$ in September. During June no significant difference in photosynthetic ability was found between plants in the front and back rows, but in September the amount of photosynthesis was significantly increased at the leaves of seedlings as well as 2-year old plants planted in the back rows. 4. The optimum temperature for maximum photosynthesis in 2-year old plants ranged from $14.0^{\circ}C$ to $14.5^{\circ}C$ in June and from $19.5^{\circ}C$ to $20.5^{\circ}C$ in September. However, the optimum temperature for maximum photosynthesis in the seedlings was from $21.2^{\circ}C$ to $21.6^{\circ}C$ in September, but a significant difference in the optimum temperature for the maximum photosynthesis in seedlings and 2-year old plants was not noticeable between the front and back rows. 5. The respiration rate was rather high in seedlings compared with 2-year old plants. During September the respiration rate in seedlings was much lower in the back rows than in the front rows. The rate of increase in the respiration of 2-year old plants was higher at September than June. The increase in respiration rate due to temperature was more significant in seedlings than 2-year old plants. 6. In September, the level of $Q_{10}$ in 2-year old plants was much lower than that found in seedlings. During June, 2-year old plants showed lower $Q_{10}$ levels at a temperature difference between $15^{\circ}C$ and $25^{\circ}C$; but in September this occurred at a temperature difference between $20^{\circ}C$ and $30^{\circ}C$.

• Proceedings of the KIEE Conference
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• 1999.07d
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• pp.1508-1510
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• 1999

스퍼터 퇴적 $WO_3$ 박막에 대해 열처리에 따른 전기적특성 및 구조적특성을 각각 4탐침법 및 AFM 관측에 의해 조사해 보고, 또한 스퍼터링시의 산소가스 유량비에 따른 $WO_3$ 박막의 막질을 ESCA에 의해 평가하였다 실험 결과 열처리에 의해 $WO_3$ 박막 표면의 평균거칠기가 $2.45\AA$에서 $152\AA$으로 크게 증가함을 알 수 있었다 또한 스퍼터시 산소유량비에 따른 효과를 ESCA로 관측한 결과, 열처리전에는 주피크가 34eV에서 나타남에 비해 열처리 후에는 36eV전후에서 나타났다.

• Proceedings of the Korea Institute of Fire Science and Engineering Conference
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• 2013.04a
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• pp.78-79
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• 2013

소방보호복은 화재진압현장에서 소방관들을 화상 위험으로부터 보호하기 위해 가장 많이 착용하는 장비이다. 소방보호복의 열보호 특성을 정확히 파악하고 있어야 소방관들의 화재진압작업시 위험요소를 적절히 판단하여 화상 사고 등을 예방할 수 있다. 따라서 본 연구는 복사열 노출에 따른 소방보호복의 열보호 성능을 정확히 측정 및 분석하기 위해 실험 장비를 제작하고 실험을 수행하였다. 소방 보호복의 구성 재료 각각에 대해 복사열 노출을 시켜 시간에 따른 피복 전후면의 온도차와 통과 열유속을 측정하여 소방 보호복의 열보호 성능 특성을 살펴보았다.