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        검색결과 4,410

        133.
        2024.10 구독 인증기관·개인회원 무료
        135.
        2024.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        이 글은 미중 기술패권경쟁이 초래한 반도체 공급망 위기에 대만 당국과 기업들이 어떻게 전략적으로 대응하는지 분석한다. 대만 반도체 산업은 TSMC 같은 기업들의 첨단 기술력이 강점이지만, 지정학적 불안정성은 약점으로 작용하고 있다. 또한 대만 기업들이 미국과 일본 및 유럽연합 등과의 협력을 기회로 활용하고 있지만, 중국의 군사적 위협과 미중 기술경쟁 등의 위협에 직면하고 있다. 이에 대만 당국은 과학기 술정책 추진 체계를 정비하고 연구개발 투자 확대 및 인재 양성에 노력하고 있으며, 기업들 역시 국제협력 강화를 통한 기술 혁신 및 공급망 다변화 전략을 추진하는 등 전략적으로 대응하고 있다. 한국 역시 연구개발 투자 확대와 핵심기술 육성, 글로벌 공급망 다변화 등을 통해 경제안보 및 전략적 자율성을 추구할 필요가 있다.
        5,800원
        136.
        2024.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Due to rapid spread of fireblight, the Rural Development Administration is supplying bactericides to farmers. However, research on inhibitory effects of main active ingredients in these bactericides on fireblight is lacking. Chlorophyll fluorescence analysis is a non-destructive method for analyzing the photosynthetic efficiency of plants, enabling time-series data analysis of pathogen progression and allowing for large-scale studies. Therefore, this study analyzed inhibitory effects of main active ingredients in bactericides on fireblight using chlorophyll fluorescence response analysis. Flowering pear trees (three-year-old ‘Shingo’ variety) were sprayed with control agents and fire blight pathogens on flowers. Chlorophyll fluorescence responses were then measured at seven-day intervals. Twenty-eight days after bactericide treatment, the fluorescence of the O-J transition stage in the untreated group was twice as high as in the average bactericide-treated group presumably due to inhibition of electron transport in the PSII donor side caused by pathogen infection, leading to leaf necrosis. Additionally, the electron transport efficiency (ET2o, RE1o) decreased, reducing the driving force of photosynthesis (DF total ABS) to 20% of the average bactericidetreated group, indicating chlorophyll damage and reduced photosynthetic capacity. In conclusion, chlorophyll fluorescence technology can be used to quantitatively evaluate the efficacy of fire blight control agents during the flowering period of pear trees.
        4,000원
        137.
        2024.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        본 연구는 미얀마 양곤 도심의 쇼핑몰 4곳에서 근무하는 523명의 구성원을 대상으로 정치적 기술이 리더-부하 교환관계(LMX)를 통해 개인성과에 미치는 영향을 검증하였다. 또한, 이 관계에서 팀 내 조언 네트워크 내향중심성의 조절된 매개효과를 분석하였다. 연구 결과, 정치적 기술은 LMX와 정(+)의 관계를 보였으며, LMX는 개인성과와 정(+)의 관계를 나타냈다. 정치적 기술은 LMX를 매개로 개인성과에 정(+) 의 관계가 있음을 보여줬다. 또한, 팀 내 조언 네트워크 내향중심성은 LMX와 개인성과 간의 관계를 정 (+)의 방향으로 조절하였으며, 정치적 기술이 LMX를 통해 개인성과에 미치는 매개효과를 강화하는 것으로 나타났다. 본 연구는 정치적 기술이 개인성과에 미치는 과정을 사회적 교환이론과 자원보존이론을 바 탕으로 설명하였다. 또한, 팀 내 수직적·수평적 관계를 통한 자원 획득의 중요성을 강조하였다. 이러한 결과는 조직 내 정치적 기술의 개발과 네트워크 형성의 중요성에 대한 실무적 시사점을 제공한다.
        6,100원
        138.
        2024.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        In this study, hybrid devices were developed to simultaneously remove odor and particulate matter (PM) emitted during meat grilling, and their performance was evaluated. A ceramic filter system and surfactant microbubble plasma system were used to reduce particulate matter. For odor reduction, an electro-oxidation system, an ozone-active catalytic oxidation system, and a multi-adsorption filter system were used. By combining the above particulate matter reduction and odor reduction devices, the reduction efficiency of odor and particulate matter generated during meat grilling was analyzed. As a result, most of the six combined device conditions showed a reduction efficiency of more than 90% for particulate matter. The combined odor also showed a high reduction efficiency of less than 200 times the emission concentration standard. This study also evaluated 22 types of odorous substances, of which ammonia (NH3) and hydrogen sulfide (H2S) showed removal efficiencies of more than 99%. Therefore, it is expected that the combination of these technologies can be used and applied directly to the sites where meat grilling restaurants are located to effectively contribute to the simultaneous reduction of particulate matter and odor.
        4,500원
        139.
        2024.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Within the framework of a project entitled “Development of Advanced Sweet Potato Cultivation Technology for Smallholder Farmers in Paraguay” implemented by KOPIA Paraguay Center (Korea Partnership for Innovation of Agriculture) in collaboration with Paraguayan Institute of Agricultural T echnology (I PTA) d uring the period 2021-2024, r esults o f four m ain e xperiments are described in this research: selection of suitable varieties, optimal planting and harvesting times, the use of ridges, and optimal chemical fertilization doses. In the selection of suitable varieties for Paraguay, 11 sweet potato varieties were evaluated in departments of San Pedro and Misiones. As a result, varieties Andaí, Jety Paraguay, and Chaco I showed the highest productivity in San Pedro, while varieties Jety Uruguayo, Chaco I, and Taiwanés showed higher productivity in Misiones. The other three experiments were carried out in San Pedro only. Optimal planting and harvesting times were determined with three varieties: Andaí, Pyta Guasu, and Jety Paraguay. For Andaí and Jety Paraguay varieties, they should be planted in December and harvested at 122 days post planting (DPP). For Pyta Guasu, it should be planted in October and harvested at 124 DPP. Regarding productivity response with soil preparation methods, the use of ridges showed higher yields in all planting methods, with the curved method planting being the most productive. Finally, optimal chemical fertilization doses were established in order to improve the total yield. The optimal nitrogen fertilizer dose (urea 45% N) was 40 kg/ha. The optimal phosphorus fertilizer dose (triple superphosphate 45% P2O5) was 80 kg/ha and the optimal potassium fertilizer dose (potassium chloride 60% K2O) was 120 kg/ha.
        4,000원
        140.
        2024.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        The purpose of this study is to identify factors that influence consumers’ acceptance intentions towards Direct-to-Consumer (DTC) Genetic Testing service. DTC genetic testing service can be considered in two aspects: the application of new technology in genetic testing customers can directly purchase and the services for receiving the test results customer can’t directly analyze. Existing technology-based acceptance models have difficulty fully explaining consumers’ acceptance intentions towards DTC genetic testing services. Therefore, this study aims to propose a new acceptance model considering these two characteristics. A survey was conducted with 377 potential consumers for this research. The analysis revealed that health interest, prior knowledge, subjective norms, innovativeness, perceived usefulness, and perceived value affect consumers’ acceptance intentions. The results obtained through this study can help establish strategies and marketing plans necessary for the diffusion of services, such as DTC genetic testing services, that combine a new technology and a service. In the long term, the accumulated DTC genetic testing results data can contribute to the development of national genetic information infrastructure and preventive medical applications, as well as improve individuals’ quality of life.
        4,200원