• Journal of Dairy Science and Biotechnology
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• 제33권1호
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• pp.69-73
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• 2015

The world is presently facing key challenges due to the population explosion, shortages in renewable sources of energy, and environmental problems. One important aspect of ecological intensification is the use and improvement of marginal lands and spaces often ignored, until now. Goats are known to be well adapted to scrubs, forage trees, and rangelands. Goats could contribute marginally, but significantly, to the growing demand for meat without using arable lands. Since 2000, there were 752 million goats globally, and goat livestock increased by 26.8% in 2010, accounting for 954 million heads. Goats are widespread due to their high adaptability to different environmental conditions and nutritional regimes, high productivity, and low maintenance cost. A significant growth in goat number was noticed in the period 2000~2010 in the Netherlands (+113.83%), in spite of the 9.75% decrease in EU-27. A cheese making goat farm in the Netherlands showed how it can survive in the one fifth size of the average. It may be a good model for the Korean goat industry since it uses seasonal breeding and results in reduced "goaty" flavor in the cheese.

• 한국식품위생안전성학회지
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• 제6권2호
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• pp.17-22
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• 1991

Great attention form a public health aspect has centered on the safety of tissues residues of veterinary drugs and environmental contaminants, with intensification of animal husbandry, the use of veterinary drugs will become increasingly important. Heavy responsibility is placed on the veterinarian and livestock producer to observe the period for withdrawal of drug prior to slaughter to assure that illegal concentrations of drug residues in meat, milk and egg do not occur. Every nation has their own regulations in relation to the residues and the guidelines on the use of veterinary drugs to fulfil the regulations, and their own national residue programs to monitoring and eliminate illegal products. Good practice of veterinary drug by users and governmental surveillance programs are very important to ensure animal food safety.

• 대한산업공학회지
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• 제26권2호
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• pp.155-164
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• 2000

Recently Fiber-optic Micro-cellular Wireless Network is considered to solve frequent handoffs and local traffic unbalance in microcellular systems. In this system, central station which is connected to several microcells by optical fiber manages the channels. We propose an efficient sectorization algorithm which dynamically clusters the microcells to minimize the blocked and handoff calls and to balance the traffic loads in each cell. The problem is formulated as an integer linear programming. The objective is to minimize the blocked and handoff calls. To solve this real time sectorization problem the Tabu Search is considered. In the tabu search intensification by Swap and Delete-then-Add (DTA) moves is implemented by short-term memory embodied by two tabu lists. Diversification is considered to investigate proper microcells to change their sectors. Computational results show that the proposed algorithm is highly effective. The solution is almost near the optimal solution and the computation time of the search is considerably reduced compared to the optimal procedure.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1990년도 하계학술대회 논문집
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• pp.289-292
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• 1990

This study is to develope a spacer having almost uniform field distribution along the profile by controlling the high electric field in tensification at earthed part, especially triple junction in the spacer-electrode-gas boundary interface. Based on the extensive field calculation using CSM, a model spacer has been manufactured and tested. The test results show that the breakdown strength of the spacer is almost same as that of SF6 gas itself without spacer.

• 한국표면공학회:학술대회논문집
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• 한국표면공학회 2009년도 춘계학술대회 논문집
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• pp.192-193
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• 2009

CrN 코팅막은 고온에서 치밀한 Cr2O3 확산방지막을 형성함으로 $800^{\circ}C$까지 기계적성질을 유지할 수 있다. 본 실험에서는 Ar, N2, 그리고 $O_2$ 가스 분위기에서 AIP(Arc Ion Plating) 기법에 의해 다양한 조성의 Cr-O-N 박막을 Si(200)과 AISI 304 기판 위에 증착되었다. Cr-O-N 코팅막은 47.4at% 미만의 산소함량을 포함 할 때까지 B1구조를 유지하였고 코팅막 내 산소함량 24.6at%에서는 강한 XRD peak intensification을 나타내었다. 47.4at%에서는 결정상을 전혀 찾아볼 수 없는 전이구조를 나타내었고, 그 이상의 산소함량에서는 Cr22O3 결정상을 나타내었다. Cr-O(17at%)-N 조성의 코팅막에서는 (200)배향의 Grain 크기 증가 및 압축잔류응력이 증가하였으나, 그 이상의 산소함량에서는 점차 감소하였다. Cr-O(24.6at%)-N 조성의 코팅막이 가장 높은 경도를 나타내었고, 산소함량이 증가할수록 점차 향상된 마찰특성을 보였다.

• 한국자동차공학회논문집
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• 제2권5호
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• pp.30-40
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• 1994

The direct-injection stratified-charge engine has the advantages of higher thermal efficiency and less CO and $NO_x$ emission levels than conventional spark ignition engines. However, its actual utilization is prevented by high unburned hydrocarbon emission levels during light-load operations. In this paper, fundamental studies were carried out using a pancake type constant volume bomb. The effects of intensification of local premixing by tangential and radial fuel injection were examined experimentally. Unburned hydrocarbon emission levels with radial fuel injection were shown to be lower than those of tangential fuel injection cases. The stratification and mixing process of fuel jet and combustion process were observed by schlieren photography.

• Radiation Oncology Journal
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• 제36권4호
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• pp.254-264
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• 2018

This article reviewed new trends and controversial issues, including the intensification of chemotherapy and recent brachytherapy (BT) advances, and also reviewed recent consensuses from different societies on the management of locally advanced cervical cancer (LACC). Intensive chemotherapy during and after radiation therapy (RT) was not recommended as a standard treatment due to severe toxicities reported by several studies. The use of positron emission tomography-computed tomography (PET-CT) and magnetic resonance imaging (MRI) for pelvic RT planning has increased the clinical utilization of intensity-modulated radiation therapy (IMRT) for the evaluation of pelvic lymph node metastasis and pelvic bone marrow. Recent RT techniques for LACC patients mainly aim to minimize toxicities by sparing the normal bladder and rectum tissues and shortening the overall treatment time by administering a simultaneous integrated boost for metastatic pelvic lymph node in pelvic IMRT followed by MRI-based image guided adaptive BT.

• 한국환경교육학회지:환경교육
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• 제12권1호
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• pp.99-109
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• 1999

Environment education, which is a principal solution to environmental problems in the world, is being practiced in Korea through the national curricula for primary and secondary schools. However, it hasn't been effective so far to practice environment education within those schools where a variety of subjects are taught. The purpose of this study is to look for the possibility of practicing environment education and thereby to make some suggestions for effective environment education in the field of English education, which doesn't seem to have a close relationship with environment education. This study first specified prospective contents of environment education by analyzing the Seventh National English Curriculum. Then, on the basis of them, the study explored how to practice environment education in the field of English education. Finally, for effective environment education, it made some suggestions and emphasized the importance of consistent efforts.

• 한국농공학회논문집
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• 제53권4호
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• pp.39-47
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• 2011

The aim of the study is to predict potential evapotranspiration and crop water requirement using meteorological data from MIROC3.2 with A1B scenario. Increase of evapotranspiration due to temperature rise can be observed out of the analysis, while effective rainfall decreased. The evapotranspiration elevation results in large amount of crop water requirement in the paddy farming. It can be seen that rainfall intensification at non-irrigation period brings effective rainfall decrease, while contributes to higher demand of crop water at irrigation period. It is necessary to secure additional water resources to adapt the climate change. It is expected that estimation on potentialevapotranspiration in this study can be used for formulation of master plan of water resources.

• 시스템엔지니어링학술지
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• 제1권2호
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• pp.34-42
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• 2005

Logistic Support Analysis(LSA) and Logistic Supportability Review must be carried out as soon as possible in development stage in order to minimize operation/maintenance cost that head the list of weapon cost and improve logistic supportability of the weapon system. And the result must be used for hardware designs to set up to be able to input to the system design and logistic support elements. Therefore Logistic Support Elements must be planed/developed/supplied with the main combat system concurrently and performance and logistic supportability of the comabat system had better be improved mutually. This report describes maintenance concept changes of weapon systems, fault diagnosis function and test equipment state on the domestic MBT(main battle tank). And then it presents application and intensification of itself fault diagnosis system for a domestic future MBT considering connection with IETM(Interactive Electronic Technical Manual) and TE(Test Equipment).