• 아동학회지
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• 제28권5호
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• pp.127-141
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• 2007

The purpose of this research was to analyze the trajectory of child's academic attainment and the effect of family socioeconomic background on the trajectory. Data were part of the Korea Youth Panel Survey 2003-2005(Middle School 2) and were analyzed by Latent Growth Curve Modeling(LGM). The degree of child's academic attainment decreased over 3 years. Socioeconomic status variables that influenced academic trajectory were family poverty, parent's attainments in scholarship, and family structure. Findings from this study suggest that societal support for low socioeconomic status families is needed for improvement of academic attainment of their children.

• 수산해양교육연구
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• 제28권3호
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• pp.841-847
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• 2016

To study the influence of background color and substratum on hypermelanosis of starry flounder, we compared the daily food intake (DFI), the feed efficiency (FE), the survival, the growth, the ratio of pigmented area on the blind side and the ratio of hypermelanic fish duplicately reared for 180 days in dark-green FRP aquarium (control), white FRP aquarium together with dark-green substratum. The ratio of pigmented area on the blind side was significantly higher at the dark-green group than at the white group. DFI, FE and growth were higher in the dark-green substratum. Pigmented area rate and ratio of hypermelanic fish were significantly higher at the dark green group than at the high dark-green substratum. The results suggest that bright tank color and substratum bottom could inhibit the hypermelanosis.

• 한국결정성장학회지
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• 제6권2호
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• pp.141-154
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• 1996

Hydride 기상증착법으로 성장시킨 InP 에피충들을 FTPL 분광법과 변온 Hall 측정법으로 조사하였다. 원료 공급 지역의 온도, 주입되는 HCI과 $PH_{3}$의 몰분율 등 공정변수가 배경 불순물의 주입에 미치는 영향을 조사한 결과, 배경 전하 농도는 원료 공급지역의 온도가 감소 할수록 감소하고 HCl의 주입량이 증가할수록 감소하나 $PH_{3}$의 주입량에는 연구된 몰분율 범위 내에서 상대적으로 무관함을 알 수 있었다. 또한 FTPL spectrum 분석 결과 에피충 내부에 배 경 donor들과 acceptor들이 존재함을 얄 수 있었고 특히, Si donor들, Zn acceptor들, 확인되지 않은 acceptor들이 주된 불순물로 존재함을 알 수 있었다.

• 수산경영론집
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• 제37권3호
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• pp.109-130
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• 2006

Rapid economic development has led seafood consumption to its quality - oriented pattern as well as consumer's in China. This study concerns about The First, China is Seafood development background. The Second, China become emboldened seafood causes. The third, seafood consumption has characteristic. The fourth, seafood consumption has the organization of society. The study shows that there are economic developmental periods Chinas has three time. The First time$(1961\sim1983)$ is rapid growth. The Second time$(1984\sim1998)$ is growth accumulate. The third time$(1999\sim)$ is changing on seafood consumption as the consumption of seafood is changed according to economic variables changes in income, price, tastes and population. This changing pattern of seafood consumption is based on economic variables appears toward luxury and convenience seafoods. Consumption of food is also affected by non - economic variables. The most typical non - economic variables leading to changes of seafood consumption is local, seafood culture, $et{\ldots}$ Recently seafood consumption pattern shows that consumers paying more money to get their seafood preference for pursuing its hight growth and varienty.

• 산업진흥연구
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• 제7권1호
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• pp.9-15
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• 2022

본 연구는 한국 커피산업에서 경쟁력 있는 기업인 스타벅스의 성장배경을 분석하고자 하였다. 이에 STEEP 분석기법을 활용하여 기업이 보유한 각각의 경쟁력을 분석하고 결과를 경쟁력 요소를 도출하고자 하였다. 연구 결과는 다음과 같다. 사회적인 측면을 살펴보면 경제성장에 따른 생활수준이 높아져옴에 따라 여성에 경제적 활동이 기폭제 역할을 해왔다. 또한 과거 커피문화의 경우 자판기 믹스커피 문화에서 문화공간적인 측면을 강조하는 소비시장으로 변모함을 간파해온 스타벅스 대응전략이 유효하였다. 기술적인 측면을 살펴보면 프랜차이점 원두 맛에 일률적 표준화를 확보하여 편차를 줄여왔으며 매장을 직영으로 운영함으로서 표준화된 운영 시스템 운영이 가능하였다. 그리고 경제적인 측면을 살펴보면, 커피 소비시장이 확장세를 이어옴에 따라 시장전체 크기 또한 비례적으로 커져 안정적인 성장환경이 형성되어왔다는 점이다. 마지막으로 환경적, 정책적 측면을 살펴보면, 최근 친환경성을 강조한 정책방향을 간파하고 시장 선두기업으로서 친환경 기업으로서의 정책 활동에 기초한 마케팅 전략방향이 주요해왔다는 점이다.

• 한국산학기술학회논문지
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• 제16권1호
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• pp.291-299
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• 2015

본 연구는 2012년 벤처기업정밀실태조사 데이터를 기반으로 벤처기업의 창업주 특성 및 기업 성장단계가 기업간 거래 및 경영상 애로사항에 어떠한 영향력이 있는지를 실증적으로 분석하였다. 창업주의 연령과 학력에 따라 기업 간 거래시 애로사항 발생빈도가 차이가 있는 것으로 나타났다. 창업주의 연령, 학력, 전공 등에서 경영상 애로사항 인식 차이가 있는 것으로 나타났다. 학력은 석사에서, 전공은 인문사회 분야에서 상대적으로 경영상 애로사항이 높은 것으로 분석되었다. 반면, 기업 성장단계에 따라 기업 간 거래 시 애로사항의 발생빈도에 대한 인식은 차이가 없는 것으로 분석되었다. 이는 기업이 성장하는 단계마다 애로사항이 빈번하게 일어남에도 불구하고 루틴하게 해결되고 있는 것으로 판단된다. 그러나 기업의 쇠퇴기 단계에서 경영상 애로사항 인식이 높았다. 이는 기업간 거래 시 쇠퇴기에 있는 업체와 거래를 꺼려하기 때문으로 이는 당연한 결과로 해석된다.

• Asian-Australasian Journal of Animal Sciences
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• 제12권2호
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• pp.282-286
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• 1999

Growth of pigs is influenced by many factors. To assist pig producers in the evaluation of alternative feeding and management strategies growth models have been developed. In the Netherlands the Technical Model Pigfeeding (TMV) is developed. This model predicts the influence of feed intake, feed composition, genotype, sex and climate on growth, body composition, gross margin and mineral excretion of healthy growing/finishing pigs. The purpose of TMV is to support information services, feed companies, researchers and students. In addition to providing accurate predictions, a model should also be user-friendly and wishes of the user should be taken into account to stimulate application of the model in practice. In this paper, the theoretical background of TMV and a methodology to stimulate application of models in practice will be described.

• 융합경영연구
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• 제6권3호
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• pp.14-25
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• 2018

Purpose - Taxes cover all aspects of society, especially in terms of resource allocation and economic growth. In reality, the tax revenue is often used to measure the quality of a country's economy. The relationship between tax revenue and economic growth has been paid much attention by academic circles. Due to this background, this paper attempts to investigate the mutual effect between tax revenue and economic growth. Research design, data, and Methodology - The annual datum form 1980 to 2017 are employed to conduct an empirical analysis under the vector error correction model. In this paper, the GDP is treated as an independent variable. The tax revenue is treated as a dependent variable. Furthermore, a menu of statistic approaches will be used to testify the mutual effect between tax revenue and economic growth. Results - Via the co-integration test, the results report that the tax revenue has a positive effect on economic growth in the long run. Through the vector error correction estimation, the results also report that the tax revenue also has a positive effect on economic growth in the short run. Conclusions - This paper provides a view that the tax revenue is a kind of a determinant to promote economic growth. Therefore, the China's government should pay much attention to the improvement of tax revenue system so as to maintain a high-speed economic growth.

• 대한한방소아과학회지
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• 제16권2호
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• pp.163-170
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• 2002

Background: Owing to stress of external appearance and bad sleeping by itching, children with atopic dermatitis grow slowly. Object: The purpose of this study is estimation of growth degree on children with atopic dermatitis Method: During I year from 2001 till 2002, it became the object of studing that 45 children with atopic dermatitis and random sample 45 children without atopic dermatitis, without another disease related to growth from 2 years to 10 years in Dep. of Pediatrics, Dongguk university Bundang Oriental Hospital. Result: Height percent of children with atopic dermatitis is more lower than Height percent of children without atopic dermatitis out of considering for the distinction of sex and age. The more atopic dermatitis is severe, the more height percent of children with atopic dermatitis is lower Conclusion: Atopic dermatitis is related to the growth on children.

• 한국의학물리학회:학술대회논문집
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• 한국의학물리학회 2002년도 Proceedings
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• pp.275-278
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• 2002

The recognition of the natural background radiation is important not only for radiological education but also for the promotion of people's scientific view about radiation. We made a "room" on the web showing natural background radiation as part of a VRM (Virtual Radiation Museum). The "room" shows the video images of the tracks of charged particles from natural background radiation, alpha and beta ray track from known sources using a Large Scale Diffusion Cloud Chamber. The purpose of this study is to make clear the origin of a kind of track (named A-track) which is thick and easy to recognize with the length less than several cm in the cloud chamber, and to make numerical explanation of its counting rate. The study was carried out using a Large Scale Diffusion Cloud Chamber (Phywe, Germany) installed in the Niigata Science Museum. The Model RNC (Pylon Electronics, Canada) was used as Rn-222 source. Ra-226 activity in RNC was 111.6 Bq calibrated with NIST protocol. Rn-222 gas was injected into the cloud chamber. Continuous video recording with use of Digital Handycam (SONY, Japan) was carried out for 360 min. after injection of Rn-222 gas. The number of alpha-ray track (alpha track) in the video images was analyzed. The growth and decay curve of the total activity of Rn-222 and its alpha emitting progeny were calculated and compared with the count of the alpha tracks. As a result the alpha tracks formed by Rn-222 injection resemble A-Tracks. The relationship between A-track in the cloud chamber and atmospheric Rn is discussed.