• 한국유기농업학회지
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• 제2권1호
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• pp.16-23
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• 1993

The traditional farming method has very long history in the process of agricultural development. The application of chemical fertilizers production became most popular to increase quantities of agricultural production. The United States of America is one of largest countries in the world. There are at present 50 States and farming conditions are very different from each individual States. There are increasing trend of agricultural production by applying chemical fertilizers as well as sprays during last 50 years(1940-90). The disadvantages of conventional farming method were to destroy nature and human life. There were some other kinds of disadvantages such as nitriated contamination in drinking water both for human being and animals. The alternative farming method is one of new farming method reducing and/of non-application of chemical fertilizers and sprays in agricultural production. There is less economic research on alternative farming system about $5.444 economic advatages in organic farms comparing commercial farms at the same area. There are advantage of higher unit price level in orgnic products, decreasing chemical costs as well as effect of crop combinations. It is certainly necessary to have more empirical research on economic and management of alternative farming method in the United States of America. However, if there is economic advantage in alternative farming methods, the future development possibility of alternative farming method can be very bright in vear future. There might be more advantages such as soil conservation, better quality of agricultural products, better health conditions of farmer's and consumer's as well as keeping healthy environment of rural and urban areas.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2016년도 춘계 학술논문 발표대회
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• pp.158-159
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• 2016

Construction project consists of several stages such as planning, design, construction, operation/maintain, etc. Decisions made in the planning and design stage have a significant impact on the construction and operation/maintain stages. Identifying key resources contributing to duration and cost of design alternatives is an important measure to achieve effective coordination between design and construction. This study proposes a method which finds an optimal design alternative by taking into account of resource planning, expected duration, and cost in construction stage. Base on literature review relative to the assessment of design alternatives, a method which predicts required resources, duration, and cost of the design alternative is established. Then, a method that identifies an optimal design alternative based on the preference of a certain project criteria is developed. Finally, a case study is presented.

• Journal of Applied and Pure Mathematics
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• 제4권5_6호
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• pp.263-268
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• 2022

We derive an alternative proof of Marsaglia's method for generating a pair of independent standard normal random variables.

• Child Health Nursing Research
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• 제16권1호
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• pp.84-92
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• 2010

Purpose: One of the main reasons why mothers quit breast feeding is that the volume of breast milk is inadequate due to insufficiency in suckling. We believe suckling experience may be a factor affecting nipple confusion. So an alternative feeding method, namely cup, spoon, finger, or nasogastric tube feeding may be needed to prevent nipple confusion. The purpose of this study was to construct a predictive model for demand for alternative feeding education by nurses. Methods: A descriptive design with structured self-report questionnaires was used for this study. Data from 175 nurses working in hospitals in Busan were collected between April 1 and 15, 2009. Data were analyzed by decision tree method, one of the data mining techniques using SAS 9.1 and Enterprise Miner 4.3 program. Results: Of the nurses, 81.1% demanded alternative feeding education and 5 factors showed that most of them expressed intention to pay, desire to know about alternative feeding, age, and learning experience. From these results, the derived model is considered appropriative for explaining and predicting demand for alternative feeding education. Conclusion: This confirms that knowledge and compliance in alternative breast feeding for newborn babies should be correct and any inaccuracies or insufficient information should be supplemented.

• Journal of the Korean Society for Industrial and Applied Mathematics
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• 제1권1호
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• pp.65-74
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• 1997

For two dimensional elasticity, we suggest a new complex variable method using the Navier's displacement equation. This method gives alternative displacement and stress formulae to those resulting from the Muskhelishvili's complex function method.

• KIEAE Journal
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• 제12권1호
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• pp.105-112
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• 2012

When a building is planned and designed, the design should be able to minimize the cost during the whole life cycle of the building. This study has begun to analyze LCC about the alternative design which is applicable to renewable energy facility construction. It is reviewed domestic and foreign papers about the trend of LCC technology and it is determined the analytical method to analyze the LCC of renewable energy. Regarding the review of alternatives, it is chosen the three alternatives which are able to designed combing the renewable energy facilities and it is performed the LCC analysis about each alternative. Alternative 1 is Photovoltaic + Solar Thermal + Photovoltaic /Wind Power, Alternative 2 is Geothermal + Photovoltaic, and Alternative 3 is Photovoltaic + Solar Thermal. The LCC analysis is present value method, its analytical period is 40 years and it is applied 3.2% of real discount rate. As a result, it is proved that Alternative 1 and Alternative 3 are not able to collectible the early investment cost during the analytical period and Alternative 2 is analyzed that its pay-back period of early investment cost is about 31 years. As the final outcome of this study on case analysis, it is more advantageous to use the combination of Geothermal and Photovoltaic energy than to use the other combination in LCC aspect.

• 대한한의학회지
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• 제30권1호
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• pp.137-149
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• 2009

Objectives: Pregnant women could have various diseases, but the treatment of medication has the limitation that could cause fetal injury. So pregnant women have used complementary and alternative medicine in the world, but korean medicine had not been actively studied on obstetrics. This study is to investigate efficacy and safety of complementary and alternative medicine on obstetrics. Methods: We searched for papers which had pregnancy, obstetrics, complementary medicine, acupuncture and herb in the pubmed since 2000. Results: 41 papers were found. Acupuncture have the efficacy and safety on nausea, pelvic pain in pregnancy and breech presentation. Complementary alternative medicine had been studied as randomized controlled trial at various diseases in obstetric. But the method were without coordination, results were different from methods. So more clinical trials about complementary and alternative medicine would be needed. Massage and acupressure would be helpful for pregnant mood complaint. Conclusion: Complementary and alternative medicine has been proved as efficacy and safety in obstetrics, so complementary and alternative medicine would be helpful method in pregnant women. For making guidelines on complementary and alternative medicine treatment during pregnancy, more research will be needed.

• 한국수자원학회논문집
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• 제41권1호
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• pp.101-113
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• 2008

본 연구는 안양천 유역의 물순환 건전화를 위한 최종 대안을 제시하기 위해 비용효과분석을 수행하였다. 이중 편익산정은 진술선호기법 중 하나인 실험선택법(Choice Experiments, CE)과 대안의 평가지수(Alternative Evaluation Index, AEI)를 결합하여 수행하였다. 실험선택법은 지역별로 다양한 속성을 보이는 안양천 유역을 잠재적 위험도와 지리적 특성을 바탕으로 6개 지역으로 나누어 설문과 분석을 수행하였다. NB > 0 이상인 대안들은 공학적, 경제적으로 매우 우수한 대안이므로 실행을 적극 검토할 필요가 있다.

• 디지털산업정보학회논문지
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• 제16권3호
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• pp.13-23
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• 2020

Currently, online means of replacing resident registration numbers(RRN) include I-Pin, mobile phone, credit card, MyPin, and general-purpose certificate. In order to issue alternative means based on the RRN, it must be designated through the designation review by the Korea Communications Commission(KCC) through a designation review by personal proofing agency and be subject to annual management. However, the criteria for designation and follow-up of the designation of the personal proofing agency carried out by KCC have been used in 2010 without revision, and there are problems that do not conform to the evaluation standards of various alternative means. Therefore, in this paper, we propose a method for improving the designation criteria and management system of the personal proofing service agency. The proposed method analyzes the characteristics of the alternative identification-based personal proofing service and proposes a follow-up management standard that can appropriately evaluate the analyzed characteristics and improves the designation criteria according to the emergence of new alternatives. Through the proposed method, it can be seen that it is possible to strengthen the safety of the personal proofing service based on the alternative means of RRN provided online and face-to-face and to protect the user's personal information.

• International journal of advanced smart convergence
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• 제11권4호
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• pp.20-27
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• 2022

In this paper, we propose to improve the designation examination criteria of agencies that provide personal identity proofing based on the resident registration number (RRN), a 13-digit number uniquely assigned by the government to identify Korean citizens. In online commerce, etc., the personal identity proofing agency (PIPA) is a place where online users can prove their personal identity by presenting an alternative means instead of their RRN. The designation examination criteria for PIPAs established in 2012 is a revision of the relevant current laws, and there is a problem in applying the designation examination for alternative means of RRN as the current examination standard. Therefore, in this paper, we propose a method to make the current examination criteria applicable to the newly designated examination of the personal identity proofing service provider based on the current RRN alternative method. According to the current designation examination criteria, only those who satisfy all the examination criteria are designated as the PIPA. However, in reality, it is not in line with the purpose of regulatory reform to require that all examination criteria be satisfied. In the proposed method, it is proposed to apply the standard score system for designation of PIPAs, to make the law current, to secure legal compliance, and to establish a new examination standard to provide a new alternative means of personal identity proofing service. By applying the proposed method to the PIPA designation examination, various alternative means of RRN can be utilized in the online commerce service market.