• 제목/요약/키워드: Science etc.

검색결과 5,886건 처리시간 0.026초

학교도서관의 마케팅 전략 (The Adoption of Marketing Strategies for School Libraries)

    • 한국도서관정보학회지
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    • 제30권3호
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    • pp.151-174
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    • 1999
  • Recently, the Ministry of Education is striving to move education and school libraries toward the information age and to create an atmosphere open education. School libraries need to be furnished with lots of useful materials for the curriculum of open education. School libraries need to be furnished with lots of useful materials for the curriculum of open education. Therefore, school libraries should adopt the concepts and techniques of marketing. The results of this study can be summarized as follows. 1. Nonprofit organizations such as school libraries should adopt the concepts and techniques of marketing to solve the problems for the rational management of the system. 2. Marketing techniques can be adopted in the areas such as collection development, service fee, selection of the place of library, advertising, better library user organization etc. 3. School libraries should be total educational information centers to realize educational goal and the curricular. 4. Procedures for marketing strategies for school libraries are embodied in mission statement, environmental analysis, marketing audit, marketing mix, marketing segmentation, evaluation methods etc. 5. The 4 "Ps", product, price, place, promotion make up the marketing mix for school libraries.libraries.

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Food Organisms of juveniles of Acanthogobius hasta Inhabited at Intertidal Zone of the Western Coast of Korea

  • Kim, Jong-Yeon;Yoon, Jong-Man
    • 한국양식학회:학술대회논문집
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    • 한국양식학회 2005년도 춘계학술발표대회 논문요약집
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    • pp.80-81
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    • 2005
  • To investigate the food organisms of the Acanthogobius hasta during the juveniles stage, the stomach contents of fish, captured in the intertidal zone of Chungchong- nam-do Sochon-gun Su-myon Dodun-ri (Fig. 1) between on early June from end of May 2003, were observed. Total length of the juveniles of A. hasta was 5.5 mm ${\sim}$ 8.9 mm size, and the participation rate of feeding was 69.6%. Main food organisms were such as copepods, decapods, polychaete larvae, amphipods and these occupied more than dry weight 3.9%. Copepods among them dominated the most quantitys by average 62.7%, and next, food organisms appeared much by order of decapods, polychaete larvae and amphipods etc.. Therefore, most important food organisms of juvenile stage of A. hasta were copepods, decapods, polychaete larvae, amphipods etc.

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Food Organisms of juveniles of Chaenogobius mororanus Inhabited at Intertidal Zone of the Western Coast of Korea

  • Kim, Jong-Yeon
    • 한국양식학회:학술대회논문집
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    • 한국양식학회 2005년도 춘계학술발표대회 논문요약집
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    • pp.82-83
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    • 2005
  • To investigate the food organisms of the Chaenogobius mororanus during the juveniles stage, the stomach contents of fish, captured in the intertidal zone of Chungchong- nam-do Sochon-gun Su-myon Dodun-ri (Fig. 1) between on early June from end of May 2003, were observed. Total length of the juveniles of C. mororanus was 5.0 mm ${\sim}$ 8.4 mm size, and the participation rate of feeding was 71.4%. Main food organisms were such as copepods, decapods, polychaete larvae, amphipods and these occupied more than dry weight 3.9%. Copepods among them dominated the most quantitys by average 62.0%, and next, food organisms appeared much by order of decapods, polychaete larvae and amphipods etc.. Therefore, most important food organisms of juvenile stage of C. mororanus were copepods, decapods, polychaete larvae, amphipods etc.

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과학관측 로케트 KSR-420S의 탑재용 원격측정 시스템설계 (A Design of Onboard Telemetry System for the Scientific Sounding Rocket KSR-420S)

  • 이수진;이재득;조광래;류장수
    • 한국전자파학회지:전자파기술
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    • 제5권2호
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    • pp.3-9
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    • 1994
  • 과학관측 로케트 KSR-420S에 탑재하는 원격측정 시스템은 로케트가 비행중에 갖게되는 응력분포, 온도분포, 속도, 가속도, 압력,자세 등의 제반특성 및 각종 회로동작 상태에 관한 정보, 오존, 이온, X-선 등의 과학연구용 관측 데이타를 취득하여 지상국으로 전송한다. 본 연구에서는 KSR-420S에 탑재된 PCM/FM 원격측정 시스템에 대해서 기술하였다.

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우리나라 잡초방제의 연구현황 (Status of Weed Control Research in Korea)

  • 이종훈;강병화
    • 한국작물학회지
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    • 제23권3호
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    • pp.5-11
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    • 1978
  • Since 1970, herbicides have been widely used in the crop production, especially in paddy field in Korea. In 1978, both preemergence and postemergence type herbicides are applied in the approximately 70% of total paddy field and 15% of upland to control weeds. Most herbicides control annual weeds effectively, but perennials have been problems in the paddy field. Under upland conditions, effectiveness of herbicides varies depending on many environmental conditions (soil moisture, soil physical properties, temperature, etc.) as well as uniform application of appropriate amounts of herbicides. In Korea, many research works have been concentrated on the screening of new herbicides in terms of herbicide effectiveness and yield or phytotoxicity of crops, and especially on the paddy field. However, physiological aspects of herbicidal action in plant and interaction of herbicides with the environments have not been studied approximately. Therefore, researches on the uptake of herbicides and the influence of herbicides on the physiological phenomena such as photosynthesis, respiration, nutrient uptake etc., to control troublesome perennial weeds in the paddy field are needed in future. Also some researches are needed to improve effectiveness of herbicirdes under upland conditions.

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에틸렌디글리콜과 숙신산 에스테르의 제조와 유화 특성 (Preparation and Emulsifying characteristics of Diethylene glycol succinate Derivative)

  • 이재덕;정노희
    • 한국응용과학기술학회지
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    • 제26권3호
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    • pp.233-239
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    • 2009
  • A reaction device raising a generation yield by efficiently removing water generated in an esterified reaction between diethylene glycol monoethyl ether and succinic acid with mixture of an azeotropic point was newly developed as a new product in development of more stabilized emulsifier with a semi-solid phase(cream) in an emulsified phase of interfacial activity. The bis-(diethylene glycol monoethyl ether succinate(hereinafter, called as BDGS) with a high yield of more than 95% was obtained. As this has a property containing amphoteric emulsified functions such as W/O type or O/W type, etc., and has a merit that can be used regardless of any emulsified phase, there is no need using other emulsified surfactant. therefore, as this has excellent skin wetability in the cosmetics industry, a product having a wider range in quality compatibility or cost saving, etc. as a humectant has been developed.

밀링 공정설계의 특징형상 데이터 모델 (A feature data model in milling process planning)

  • 이충수;노형민
    • 대한기계학회논문집A
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    • 제21권2호
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    • pp.209-216
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    • 1997
  • A feature is well known as a medium to integrate CAD, CAPP and CAM systems. For a part drawing including both simple geometry and compound geometry, a process plan such as the selection of process, machine tool, cutting tool etc. normally needs simple geometry data and non-geometry data of the feature as the input. However, a extended process plan such as the generation of process sequence, operation sequence, jig & fixture, NC program etc. necessarily needs the compound geometry data as well as the simple geometry data and non-geometry data. In this paper, we propose a feature data model according to the result of analyzing necessary data, including the compound geometry data, the simple geometry data and the non-geometry data. Also, an example of the feature data model in milling process planning is described.

Object Cataloging Using Heterogeneous Local Features for Image Retrieval

  • Islam, Mohammad Khairul;Jahan, Farah;Baek, Joong Hwan
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • 제9권11호
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    • pp.4534-4555
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    • 2015
  • We propose a robust object cataloging method using multiple locally distinct heterogeneous features for aiding image retrieval. Due to challenges such as variations in object size, orientation, illumination etc. object recognition is extraordinarily challenging problem. In these circumstances, we adapt local interest point detection method which locates prototypical local components in object imageries. In each local component, we exploit heterogeneous features such as gradient-weighted orientation histogram, sum of wavelet responses, histograms using different color spaces etc. and combine these features together to describe each component divergently. A global signature is formed by adapting the concept of bag of feature model which counts frequencies of its local components with respect to words in a dictionary. The proposed method demonstrates its excellence in classifying objects in various complex backgrounds. Our proposed local feature shows classification accuracy of 98% while SURF,SIFT, BRISK and FREAK get 81%, 88%, 84% and 87% respectively.

곰팡이 발효소시지의 향기성분 분석 및 관능검사 (Volatile Flavor Components and Sensory Evaluation of Mold Fermented Sausages)

  • 김창한;고명수;이광형;박상진;김정환;임대석;박우문;유익종;이치호
    • 한국축산식품학회지
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    • 제18권3호
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    • pp.255-260
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    • 1998
  • The aroma concentrates from mold fermented sausages were isolated by steam distillation and simultaneous steam-distillation-extraction(SDE). methods. Quantitative estimation of the aroma concentrates in mold fermented sausages was carried out by using GC-MC. Mold fermented sausages were manufactured into two types. The first was manufactured with starter culture containing Lactobacillus plantarum and Staphylococcus carnosus(LP). The second was manufactured with starter culture containing L. curvatus and S. carnosus(LC). The aroma concentrates containing hexanoic acid and 2-butyl-2-octenal were identified in mold fermented sausages immediately after manufacture. After 28 days, the volatile flavor components from LP and LC were determined to be 14 (trimethylsilylester of hexadecanoic acid and 2-methyl-3-octanol, etc.) and 16 substances(hexadecanoic acid and 1-hexadecanol, etc.), respectively. The distribution of aroma concentrates in LP and LC was different, but their panel test placed them in similarity.

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복합촉매를 이용한 플라즈마 반응에 의한 유해가스의 제거에 관한 연구 (A study of decomposition of harmful gases using Composite catalyst by Photocatalytic plasma reactions)

  • 김관중;우인성;박화용;이홍주
    • 대한안전경영과학회:학술대회논문집
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    • 대한안전경영과학회 2012년 춘계학술대회
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    • pp.421-433
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    • 2012
  • The objective of this study is to obtain the optimal process condition and the maximum decomposition efficiency by measuring the decomposition efficiency, electricity consumption, and voltage in accordance with the change of the process variables such as the frequency, maintaining time period, concentration, electrode material, thickness of the electrode, the number of windings of the electrode, and added materials etc. of the harmful atmospheric contamination gases such as NO, $NO_2$, and $SO_2$etc. with the plasma which is generated by the discharging of the specially designed and manufactured $TiO_2$ catalysis reactor and SPCP reactor.

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