• Title/Summary/Keyword: Alternative methods

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A Study on the Perfomance Analysis of Low Energy Cooling Systems in Office building (사무소건물의 에너지절약형 냉방시스템 성능분석에 관한 연구)

  • Park, Chang-Bong;Rhee, Eon-Gu
    • Journal of the Korean Solar Energy Society
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    • v.30 no.6
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    • pp.89-94
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    • 2010
  • A large portion of the energy cost of a building is cooling and heating to maintain a comfortable indoor environment. Air conditioning is now one of the important parts in the building design, as increase in energy consumption and pollutant emission in energy conversion process. In this study, elements that affects the energy consumption of model building are identified and the perfomance analysis of the alternative a Low Energy Cooling Systems considering characteristics of model building and energy saving performance is analyzed. In this study, elements that affect the energy consumption of office building are identified and energy saving performance of the alternative air conditioning system is analyzed. As a result, applied to earn and suggest basic data for energy saving measures. In this study, EnergyPlus simulation program was used to evaluate the energy load when alternative Low Energy Cooling Systems are applied to the model building. The reliability of simulation program is verified by comparing actual energy load from operation data of building management office and predicted energy load using simulation program. For Low Energy Cooling System application which considers the purpose and characteristics of the building, reasonable and energy-saving air conditioning method obtained by analyzing energy consumption elements for each expected air conditioning methods is used to deduct result of this study.

Nursing Students' Perception, Experience and Attitude on Complementary and Alternative Therapies (보완대체요법에 대한 간호대학생의 인식, 경험 및 태도 조사)

  • Lim, So Hee;Lee, Joo Young
    • Journal of East-West Nursing Research
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    • v.21 no.2
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    • pp.110-118
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    • 2015
  • Purpose: This study aimed to provide a basic resource for developing nursing interventions and educational programs for complementary and alternative therapies (CAT) by examining nursing students' perception, experience, and attitudes toward CAT. Methods: Data were collected targeting 230 nursing students from October 20 to November 10, 2014, and analyzed by using descriptive statistics, t-test, ${\chi}^2$-test, and ANOVA with SPSS/WIN 18.0. Results: Results showed that CAT were performed by CAT specialists in combination with hospital treatments for individuals suffering from chronic pain and musculoskeletal diseases. Nursing students obtained information on and experience of CAT through the Internet. CAT were used for psychological and mental stability as a supplementary treatment. The majority of the participants used Yoga followed by massage as a sub-therapy of the program. They said that openness of medical staff and active communication are important for having a positive attitudes toward CAT. There are differences in attitudes toward CAT according to gender, student levels, and previous experience on CAT. Conclusion: It is crucial for nursing students to have right perception, experience, and attitudes toward CAT in order to apply CAT to the clinical field.

Eco-friendly selection of ship emissions reduction strategies with emphasis on SOx and NOx emissions

  • Seddiek, Ibrahim S.;Elgohary, Mohamed M.
    • International Journal of Naval Architecture and Ocean Engineering
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    • v.6 no.3
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    • pp.737-748
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    • 2014
  • Increasing amounts of ships exhaust gases emitted worldwide forced the International Maritime Organization to issue some restricted maritime legislation for reducing the adverse environmental impacts arising from such emissions. Consequently, ships emission reduction became one of the technical and economical challenges that facing the ships, operators. The present paper addresses the different strategies that can be used to reduce those emissions, especially nitrogen oxides and sulfur oxides. The strategies included: applying reduction technologies onboard, using of alternative fuels, and follows one of fuel saving strategies. Using of selective catalytic reduction and sea water scrubbing appeared as the best reduction technologies onboard ships. Moreover, among the various proposed alternative fuels, natural gas, in its liquid state; has the priority to be used instead of conventional fuels. Applying one of those strategies is the matter of ship type and working area. As a numerical example, the proposed methods were investigated at a high-speed craft operating in the Red Sea area between Egypt and the Kingdom of Saudi Arabia. The results obtained are very satisfactory from the point of view of environment and economic issues, and reflected the importance of applying those strategies.

Study on CO2 Emission Reduction Effects of Using Waste Cementitious Powder as an Alternative Raw Material

  • Park, Dong-Cheon;Kwon, Eun-Hee;Hwang, Jong-Uk;Ahn, Jae-Cheol
    • Journal of the Korea Institute of Building Construction
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    • v.14 no.2
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    • pp.187-194
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    • 2014
  • With environmental regulations continuously being strengthened internationally the need to control environmental pollution and environmental load is emerging in Korea. The purpose of this study is to seek methods or using waste cementitious powder as an alternative raw material for limestone through the optimization of raw material and to quantitatively analyze the resulting reduction of $CO_2$ emission in order to contribute to solving the issue of waste, which is the biggest issue in relation to construction and global warming. The results of the study, show that waste cementitious powder can be used as an alternative raw material for limestone at OPC level, but it was also found that mixing fine aggregate cementitious powder into waste cementitious powder significantly affected the substitution rate for limestone with waste cementitious powder and the reduction of greenhouse gas. In particular, when fine aggregate cementitious powder was used at a rate of 0~20%, the substitution rate for limestone and the reduction in the rate of greenhouse gas emission was significantly reduced. It is thought that a technique to efficiently separate and discharge the fine aggregate cementitious powder mixed in waste cementitious powder needs to be developed in the future.

Metabolic Syndrome and Associated Factors in Korean Adolescents : 1998~2008 Korean National Health and Nutrition Examination Survey (청소년 대사증후군과 관련요인 : 1998~2008년도 국민건강영양조사)

  • Kim, Jae-Hee;Lee, Gyeong-Ran;Chong, Chung-Un
    • Journal of Society of Preventive Korean Medicine
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    • v.15 no.1
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    • pp.89-98
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    • 2011
  • Objectives : The aim of this study was to investigate the prevalence of metabolic syndrome and the association between lifestyle factors and the risk of metabolic syndrome in Korean adolescents. Methods : The metabolic syndrome was defined with ${\geq}$ 3 metabolic abnormalities using the age-modified criteria of the Adult Treatment panel III specified by National Cholesterol Education Program in adolescents aged 12 to 18 years who have participated in the Kroean National Health and Nutrition Examination Survey in 1998(n=936) and 2008(n=620). Physical activity and dietary intakes were assessed. Results : The overall prevalence of metabolic syndrome in Korean adolescents declined over 10 years (P < 0.01). Adolescents engaging regular exercise significantly increased over 10 years (P < 0.001). Physically activity was associated with a lower risk of metabolic syndrome (P < 0.001). Dietary intake patterns were not associated with a risk of metabolic syndrome. Conclusions : The prevalence of metabolic syndrome among Korean adolescents declined over 10 years which may be in part due to the increased regular physical activity. The risk of metabolic syndrome is lower in individuals who are physically active.

Proposal of indirect experience practice learning items to alternative ambulance ride practice in paramedic students (응급구조(학)과 학생들의 구급현장실습 대체 간접실습 학습 항목 제안)

  • Hong, Sung-Gi
    • The Korean Journal of Emergency Medical Services
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    • v.25 no.2
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    • pp.7-18
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    • 2021
  • Purpose: This study aimed to present the learning items of indirect practice as an alternative means of ambulance riding practice. Methods: Twelve on-site professionals participated in testing the effectiveness of learning items of utility value in indirect experience practice among the recommended learning objectives of ambulance ride practice using the modified Delphi technique. To validate the learning objectives, the Delphi technique was used to check content validity, and analytic hierarchy process (AHP) analysis was used to analyze the weighting value. Results: As the learning goal of indirect experience practice replaced the ambulance riding practice, four items were derived in consideration of practicality. These items were consistent with the Delphi panel's consistency index, convergence, and agreement. The first learning item to consider was 'Prevention of infection and risk of infection.' Conclusion: The results of this study are meaningful in that they propose the learning items that can achieve the minimum educational goal through indirect experience practice as an alternative means of ambulance training.

The Status of Damage Relief in the Cosmetics Industry and the ADR System

  • Um, Mi Sun
    • Journal of Arbitration Studies
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    • v.32 no.3
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    • pp.93-109
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    • 2022
  • Cosmetics are products that consumers use every day to maintain or improve the health of their skin and hair. Therefore, the expansion of the cosmetics market leads to the expansion of disputes over cosmetic damage. Along with constant social changes, new conflicts continue to arise. In order to resolve these disputes, various consumer dispute resolution organizations and methods are required. Therefore, Alternative Dispute Resolution (ADR), an alternative method that can provide a reasonable judgment on problems that occur during the manufacture and distribution of cosmetics with expert knowledge of the industry, is required. Korea resolves disputes between consumers and manufacturers caused by cosmetics through the ADR of the Korea Cosmetics Association and the Korea Consumer Agency. It handles disputes related to accidents caused by cosmetics, offers consultation on consumer complaints on cosmetics and provides information on accidents and safety related to cosmetics. It is not possible to completely eradicate disputes from cosmetic damages. Therefore, it is necessary to expand and efficiently operate the cosmetic ADR system for consumers. In this study, the current status of cosmetic damage disputes and damage relief and the role of the domestic ADR system were reviewed. Consumers should be easily relieved from damage caused by cosmetics. By accumulating important precedents with an efficient cosmetic damage dispute resolution system, disputes over cosmetic damage should be smoothly resolved.

In-home Use of Complementary Alternative Medicine by Stroke Patients (재가 뇌졸중환자의 보완대체요법 이용실태)

  • Kang, Hyun-Sook;Kim, Won-Ock;Kim, Jeong-Hwa;Wang, Myung-Ja;Hyun, Kyung-Sun
    • Journal of East-West Nursing Research
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    • v.15 no.2
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    • pp.102-109
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    • 2009
  • Purpose: The study was conducted to ascertain the use of the complementary alternative medicine (CAM) in stroke patients, in order to provide the appropriate CAM information to patients recovering from stoke. Methods: Subjects were 201 stroke patients who were randomly selected from a health care center and a welfare center. Data from a self-administered questionnaire collected from February to April 2009 was analyzed using SPSS/WIN 12.0. Results: Subjects averaged 67.4-yr-of-age. Of the 201 subjects, 69.2% had used CAM. CAM use was statistically significant in diagnosis, duration of post stroke, paralysis, and education about CAM. CAM was used in the mid-portion of treatment by 47.3% of the subjects, and 41.7% used it for more than a year. Of those using CAM, 52.7% of the subjects responded that their reason was the belief in the treatment's beneficial effects. Of the subjects 89.2% reported most frequent use of oriental medicine. Conclusions: The majority of stroke patients surveyed frequently and continuously used CAM in their mid-period of treatment expecting positive effects.

Proposal an Alternative Data Pipeline to Secure the Timeliness for Official Statistical Indicators (공식발표 통계지표의 적시성 확보를 위한 대안 데이터 파이프라인 구축제안)

  • Yongbok Cho;Dowan Kim
    • Journal of Korea Society of Industrial Information Systems
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    • v.28 no.5
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    • pp.89-108
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    • 2023
  • This study provides a comprehensive analysis of recent studies conducted on the topic of nowcasting in order to enhance the accuracy and promptness of official statistical data. Furthermore, we propose an alternative approach involving the utilization of real-time data and its corresponding collection methods to effectively operate a real-time nowcasting model capable of accurately capturing the current economic condition. We explore high-frequency real-time data that can predict economic indicators in both the public and private sectors and propose a pipeline for data collection processing and modeling that is based on cloud platforms. Furthermore we validate the essential elements required for the implementation of real-time nowcasting, as well as their data management protocols to ensure the reliability and consistency needed for accurate forecasting of official statistical indicators.

The application of alternative methods for skin irritation evaluation on pesticides (농약에 대한 피부자극성 대체시험법 적용연구)

  • Jeong, Mi-Hye;Kim, Mi-Kyoung;Park, Soo-Jin;You, Are-Sun;Hong, Soon-Sung;Park, Kyung-Hun;Park, Jae-Eup
    • The Korean Journal of Pesticide Science
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    • v.16 no.3
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    • pp.261-266
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    • 2012
  • It is common to use many experiment animals to evaluate the toxicity of chemicals including pesticides. For protecting animal, the concepts of 3R (Reduction, Replacement, Refinement) were introduced and in vitro alternatives methods actively have been developed all over the world. Many experimental animals for toxicological tests have been used, so that it is important to establish the alternative methods. In this study, the alternative method using reconstituted human skin model (Keraskin$^{TM}$) was conducted for classification of skin irritation on pesticides. Sixteen formulations selected on the basis of the degree of irritation were treated by Keraskin$^{TM}$ test. The percent of cell viability was measured into the culture medium collected after treatment of the pesticides for 24-72 hrs. The skin irritations of formulations were evaluated by the cell viability. In this study, The 4 formulations with mild irritation in rabbits were evaluated as nonirritant, the 6 formulations with moderate and severe irritation were evaluated as irritant in human skin model test. We suggest that the alternative test using Keraskin$^{TM}$ model could be used as toxicity evaluation for primary irritation index (P.I.I.) score of greater than or equal to 2.1 of pesticides. The further studies should be required to apply for hazardous assessment of pesticides on alternative skin irritation methods because of the interindividual variability of the sensitivity of skin irritation on pesticides.