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        검색결과 11

        1.
        2023.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The objective of the present experiment was to investigate the effects of dietary vitamin C (VC), vitamin E (VE), and betaine (BT) supplementations on productive performance, egg quality, relative organ weights, liver visual characteristics, antioxidant status, immune response, and stress indicator in laying hens raised under heat stress conditions. A total of 280 47-wk-old Hy-Line Brown laying hens were allotted to 1 of 4 dietary treatments with 7 replicates in a completely randomized design. Each replicate had 10 birds per cage. The basal diet was formulated to meet or exceed the requirement estimates for Hy-Line Brown laying hens. Three additional diets were prepared by adding 250 mg/kg VC, 250 mg/kg VE, or 3,000 mg/kg BT to the basal diet. The experimental diets and water were provided to hens on an ad libitum basis for 8 wk. Average daily room temperature and relative humidity were 30.7±1.41℃ and 72.5±11.61%, respectively. Results indicated that hens fed diets containing 250 mg/kg VE had a less (p<0.05) egg production rate than other dietary treatments. For egg quality, hens fed diets containing 3,000 mg/kg BT had a less (p<0.05) eggshell thickness than those fed the diets containing 250 mg/kg VC or 250 mg/kg VE. For antioxidant status, there was a tendency (p=0.09) for the least malondialdehyde (MDA) concentrations in the liver for BT treatment. A tendency (p=0.05) was observed for less blood heterophil:lymphocyte ratio in BT treatment as compared to other treatments. In conclusion, dietary supplementation of 250 mg/kg VC, 250 mg/kg VE, and 3,000 mg/kg BT has no beneficial effects on productive performance, egg quality, relative organ weights, liver visual characteristics, and immune responses of laying hens raised under the current heat stress conditions. However, dietary supplementation of 3,000 mg/kg BT alleviates antioxidant status and stress response of laying hens exposed to heat stress.
        4,200원
        2.
        2018.07 구독 인증기관·개인회원 무료
        Social media have been proved as a tool for social branding, but not as a tool for return on investment (ROI) generation. The ultimate goal of any business activities is to generate ROI; therefore, businesses should know what social media practices actually increase their ROI. Researchers in the computer science and engineering areas have attempted to create a systematic model/statistical method to quantify data collected from social media to generate meaningful consumer and market trends and ROI (Zeng, Chen, Lusch, & Li. 2010). This process is called Social Media Intelligence (SMI) or Social Media Analytics (SMA). Researchers have not been yet successful in developing an effective analytical system for social media data to generate ROI. Therefore, the purpose of this study is to explore which social media practices would affect ROI based on SMA process with key techniques used to analyze the indicators in social media (i.e., Key Performance Indicators; KPIs) that show the effectiveness of a company in achieving its business objectives. This study is an exploratory research to determine the nature of a problem in the SMI, to gain further insight, and to show opportunities in the subject area. The result shows that using crawling, topic modeling and social network analysis techniques, businesses could collect and monitor right KPIs depending on their social media goals (e.g., number of followers for awareness, number of link clicks for engagement, number of lead magnets for conversion). After then, using the techniques to analyze the KPIs (e.g., opinion mining, sentiment analysis, etc. for the understand stage), businesses would be able to identify/predict consumer demands and market trends. Based on this prediction, businesses need to visualize the result to customers by executing right marketing strategies (e.g., effective viral marketing, personalized Call-To-Action, customized product/service, direct relationship establishment, frequent communication, establish long relationship, etc.). This study could contribute to the field by presenting the effective KPIs and techniques organized based on the SMA stages and social media goals and could provide the industry a right tool and a direction for their social media promotional practices.
        3.
        2017.10 구독 인증기관·개인회원 무료
        출연기관은 국가 발전을 위한 연구개발을 수행하는 역할을 수행하고 있다. 최근 환경 등의 사회적 이슈가 확대되면서 출연연의 사회적 책임에 대한 인식도 강조되어가고 있다. 그 결과 출연연이 기본 연구개발의 가치 창출뿐만 아니라 사회적 공헌 또는 기여를 통하여 사회와 더불어 공존하면서 지속가능한 성장을 추구해야 할 필요성이 제기되고 있다. 본 논문은 출연연 이해당사자 교육성과에 대하여 공유가치창출(CSV)의 지표들을 분석하고 도입 시 고려해야 할 정책방안들을 제안한다
        4.
        2016.10 구독 인증기관·개인회원 무료
        A self-powered time-temperature indicator (TTI) was optimized to enhance the performance of the TTI by modifying a biofuel cell using different immobilization, redox mediators, and status of electrode. The performance of the TTI was measured by output voltage of the TTI. The enzymes and combinations of lacasse mediators (HBT (1-hydroxybenzotriazole), Rupy (Bis-(bipyridine)-(5-aminophenanthroline) ruthenium bis (hexafluorophosphate)), MB (Methylene blue), SDP (4,4- sulfonyldiphenol)) and glucose oxidase mediators (FA (Ferroceneboxaldehyde), DBQ(2,5-dihydroxybenzoquinone), HQS (8-hydroxyquinoline-5sulfonic acid hydrate), FHFP (Ferrocenium hexafluorophosphate)) were immobilized with stabilizers (pyrrole) on a glassy carbon electrode by electrodeposition by applying a square wave, cross-linking and physical immobilization. MWCNTs were used to modify glassy carbon electrodes. MWCNTs coated electrodes produced higher output voltage than uncoated electrodes. The optimum and stable performance of the self-powered TTI was that the output voltage of 64 mV and duration time was 3hr at 25°C, when the combination of Rupy, MB for laccase mediators and HQS, FHFP for glucose oxidase mediators were immobilized on MWCNTs coated electrodes by applying a square wave method. In the application, the concentrations of enzyme and glucose were adjusted to prolong the shelf-life of TTI at much lower output voltage.
        5.
        2015.03 KCI 등재 SCOPUS 구독 인증기관 무료, 개인회원 유료
        The use of complimentary indicators, other than radiation dose and risk, to assess the safety of radioactive waste disposal has been discussed in a number of publications for providing the reasonable assurance of disposal safety and convincing the public audience. In this study, the radionuclide flux was selected as performance indicator to appraise the performance of engineered barriers and natural barrier in the Wolsong low- and intermediate-level waste disposal facility. Radionuclide flux showing the retention capability by each compartment of the disposal system is independent of assumptions in biosphere model and exposure pathways. The scenario considered as the normal scenario of disposal facility has been divided into intact or degraded silo concrete conditions. In the intact silo concrete, the radionuclide flux has been assessed with respect to the radionuclide retardation performance of each engineered barrier. In the degraded silo concrete, the radionuclide flux has been explored based on the performance degradation of engineered barriers and the relative significance of natural barrier quantitatively. The results can be used to optimally design the near-surface disposal facility being planned as the second project phase. In the future, additional complimentary indicators will be employed for strengthening the safety case for improving the public acceptance of low- and intermediate-level waste disposal facility.
        4,600원
        7.
        2012.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This paper analyzed twenty-six production-related KPI(Key Performance indicator) factors of business diagnosis, such as personnel, equipment, materials, operations and quality affecting company business competition to 186 small machinery manufacturers in 2010. Also, we explained the concept of Business Positioning and divided research subjects into four Business Positioning Groups formed break-even point ratio & fixed cost ratio to sales and then we compared between the 4 groups using Logistic Regression analysis by SAS statistical software package. The objective of this study is two-fold. The first is to find out production-related KPI factor of superior Business Positioning Group. The second is to suggest improvement ways for small manufacturers in order to get better profitable Business Positioning.
        4,000원
        10.
        2020.03 KCI 등재 SCOPUS 서비스 종료(열람 제한)
        The study aims to investigate determinants of performance indicator and perceptions of existing and potential customers in accommodation sharing. This study uses data of Airbnb in Busan and Jeju from January 1 to December 31 in 2018, provided by AirDNA. The total number of listed accommodation sharing were 5,109 accommodations in Busan and 11,502 accommodations in Jeju. More than 90 property types of registered accommodation are subcategorized and re-classified in this study. Study 1 examined current usage and effects of factors on performance indicator in tourism destinations by applying Airbnb data. Study 2 investigated effects of perceived factors on satisfaction, intention to use, loyalty, and tourism competitiveness by applying online survey data. This study applies statistical analyses such as factor and regression analyses, ANOVA, t-test, and MANOVA. Results of Study 1 showed that usage and effects of accommodation sharing differ from regulation that is related to sharing types. Effects also differ based on travel destinations. Results of Study 2 showed how customers perceive accommodation sharing differ from pure meaning of sharing. The results of Study 1 and 2 found significant effects of price and service factors on performance indicator and customer satisfaction. The findings of Study 2 showed significant effects on loyalty and tourism competitiveness.