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        검색결과 1,679

        81.
        2023.10 KCI 등재 구독 인증기관 무료, 개인회원 유료
        우리나라 해양환경에 유출되는 위험·유해물질(Hazardous Noxious Substances, HNS)의 해양환경 및 사회환경 영향평가 결과 와 HNS 확산 영역, 해양환경 정보, HNS 실태조사 결과 등 관련 연구 결과 및 자료를 정책결정자와 연구자들에게 공유할 수 있는 HNS 국내 용 플랫폼을 구축하고자 한다. 국내의 HNS 관리 및 배출 체계 마련을 위한 의사결정 지원이 가능하고 국내 실정에 적합한 플랫폼의 설계 를 위하여 유해물질의 데이터 관리 및 유출 시 대응 도구, 기초적인 정보 등 플랫폼에 관련된 기술동향을 분석하는 등 국내·외의 플랫폼 개발 사례를 고찰하였다. 유속 벡터의 전처리 기능 개발, 전처리 결과에 따른 동적 시각화 구현, 해양산업시설 배출 HNS의 유출량과 유출 범위의 전처리 모듈, HNS 해양환경 영향평가 연산 모듈 프로토타입을 개발하였다. HNS 해양환경 영향평가를 위한 국내용 HNS 플랫폼은 초기 위해성을 평가하고 대응 및 관련 법제화 시 과학적인 기초 도구로써 활용될 수 있을 것으로 기대된다.
        4,000원
        82.
        2023.10 구독 인증기관·개인회원 무료
        The salivary glands of hard ticks consist of three types (type I, II, and III) of acini according to their functions and location. The type II and III acini play critical roles in tick salivation, which is likely controlled by a variety of neuropeptides or neurotransmitter via interaction with their receptor, G protein-coupled receptors (GPCRs). Orchestration of dopamine receptor (D1) and invertebrate specific D1-like dopamine receptor (InvD1L) located in type II and III acini precisely control tick salivary secretion via collection of primary saliva in the lumen and expulsion of collected saliva, respectively. The two dopamine receptors (D1 and InvD1L) in Haemaphysalis longicornis were identified as 1278 bp (426 aa) and 1362 bp (454 aa) in length, respectively. Both dopamine receptors were functionally analyzed through Ca2+ and cAMP assay using the heterologous expression system. The transcripts of D1 and InvD1L were profiled from synganglion and salivary glands of female ticks (unfed, 3/18/60/96 post blood meal and replete). D1 and InvD1L were significantly upregulated in the early phase of blood feeding from female H. longicornis. Salivary secretion induced by dopamine was significantly reduced by RNAi of D1 and InvD1L. Interestingly, RNAi of two dopamine receptors induced a significantly longer period of blood feeding in female ticks, which were significantly lighter after feeding than control. Taken together, it was suggested that D1 and InvD1L play critical roles in early and late phase of tick blood feeding for feeding capability.
        83.
        2023.10 구독 인증기관·개인회원 무료
        최근 2년동안 한국에서 꿀벌의 소실현상으로 식량난이 벌어질 것이라는 우려가 있다. 2020년 기준 국내 12개 과채류에서 화분매개벌의 의존도는 67.2%로 농업에서 화분매개벌은 중요한 위치를 차지한다. 이번 꿀벌 소실로 인해 딸기, 수박, 참외에서 화분매개용 꿀벌의 수요공급 불균형 문제가 발생하였다. 딸기에서는 12월 중 꿀벌 조기소실 문제, 수박과 참외에서는 벌의 임대가격이 30-50% 상승과 더불어 벌을 구하지 못해 인력수급의 어려움 등 작물재배 농가에 큰 부담이 되었다. 꿀벌의 소실은 전세계적인 문제이며 복합적인 원인에 의해 발생하므로 단기간에 해결되기 어렵다. 따라서 꿀벌에 소실에 대비하여 안정적인 작물 생산을 위한 종합적인 화분매개 관리 가 반드시 필요하다. 첫째 화분매개용 꿀벌의 사양기술의 표준화를 통하여 기존 채밀위주의 사양기술보다 더 안정적으로 벌을 생산할 수 있는 기술이 개발되어야 한다. 둘째 작물에서 더욱 효과적으로 벌을 이용하고 관리할 수 있는 기술이 확립 보급되어야 한다. 셋째는 꿀벌을 대체할 수 있는 곤충자원(뒤영벌, 토종벌)을 이용한 화분매 개 기술을 개발해야 한다. 아울러 기후변화에 대응하여 장기적인 기상변동 데이터 확보와 더불어 야생 화분매개 자원의 보호 보존을 위한 연구가 수행되어야 할 것이다.
        88.
        2023.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Companies are paying attention to project governance to realize their goal strategies, project success, and project value in a rapid and complex environment due to the development of information technology. This study aims to explore project governance and factors from literature review and practice guides related to project governance and empirically analyze the impact of project governance factors on IT project objective performance. The survey was conducted on project managers, project team members, and project management members with experience in carrying out business IT projects within two years at companies in various industries in Korea. The main conclusion is as follows. Among the project governance factors, disclosure and reporting that uses and reports using appropriate and reliable information about projects related to decision-making activities positively impact the achievement of IT project objectives: business success and stakeholder satisfaction. Among the project governance factors, project sponsorship, a role that effectively connects management and projects, and a project management framework that provides tools, procedures, resources, and techniques for projects positively impact IT project objective performance. This study is of academic and practical significance in that it identifies the definition and factors of project governance through companies in various industries in Korea and the positive impact of project governance factors on IT project objective performance.
        4,000원
        89.
        2023.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This empirical analysis investigates the impact of consultant competency and project manager (PM) competency on business performance. Two hundred and twenty four chief executive officers and executive members at small and medium sized firms in the manufacturing sector were surveyed, yielding several outcomes. First, consultant competency positively affects consulting performance. Second, consultant competency positively affects business performance. Third, PM competency does not have a significant influence on consulting performance. Fourth, PM competency does not have a significant impact on business performance. Fifth, consulting performance does not have a significant effect on business performance. Finally, regarding the mediation effect of consulting performance on the influence of consultant competency and PM competency on business performance, consulting performance had no significant impact. Thus, expertise and insight are crucial for a consulting business to enable the growth of professional consultants. Furthermore, this study is expected to enhance the consulting performance of small and medium sized manufacturing firms by providing useful data to consultants and project managers when carrying out consulting projects.
        4,000원
        90.
        2023.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Recently, defects that occurred during the construction of apartment houses have become a social issue. Defects in apartment houses lead to waste of resources and economic loss, causing psychological and physical damage to customers, and a decrease in reliability and financial loss to construction companies. The purpose of this study was to analyze the impact of defect occurrence according to the difference in project management level in the apartment housing construction stage, and to investigate the extent to which the project manager's experience affects the defect occurrence rate. For the empirical analysis of the study, statistical analysis was conducted using data collected from 130 actual projects. The results of the analysis showed that schedule management, cost management, and quality management had a positive effect on reducing the defect occurrence rate in the execution stage of apartment housing construction, while human resource management productivity had a negative effect. This study theoretically demonstrated the importance of project management, and in practice, showed that schedule management, cost management, and quality management should be faithfully performed in the execution stage to reduce the rate of defects after project completion. It was also suggested that hiring an experienced project manager would help reduce project defects.
        4,300원
        91.
        2023.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        As platforms become primary decision making tools, platforms for decision have been introduced to improve quality of decision results. Because, decision platforms applied augmented decision-making process which uses experiences and feedback of users. This process creates a variety of alternatives tailored for users’ abilities and characteristics. However, platform users choose alternatives before considering significant quality factors based on securing decision quality. In real world, platform managers use an algorithm that distorts appropriate alternatives for their commercial benefits. For improving quality of decision-making, preceding researches approach trying to increase rational decision -making ability based on experiences and feedback. In order to overcome bounded rationality, users interact with the machine to approach the optional situation. Differentiated from previous studies, our study focused more on characteristics of users while they use decision platforms. This study investigated the impact of quality factors on decision-making using platforms, the dimensions of systematic factors and user characteristics. Systematic factors such as platform reliability, data quality, and user characteristics such as user abilities and biases were selected, and measuring variables which trust, satisfaction, and loyalty of decision platforms were selected. Based on these quality factors, a structural equation research model was created. A survey was conducted with 391 participants using a 7-point Likert scale. The hypothesis that quality factors affect trust was proved to be valid through path analysis of the structural equation model. The key findings indicate that platform reliability, data quality, user abilities, and biases affect the trust, satisfaction and loyalty. Among the quality factors, group bias of users affects significantly trust of decision platforms. We suggest that quality factors of decision platform consist of experience-based and feedback-based decision-making with the platform's network effect. Through this study, the theories of decision-making are empirically tested and the academic scope of platform-based decision-making has been further developed.
        4,600원
        92.
        2023.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Recently, the importance of impact-based forecasting has increased along with the socio-economic impact of severe weather have emerged. As news articles contain unconstructed information closely related to the people’s life, this study developed and evaluated a binary classification algorithm about snowfall damage information by using media articles text mining. We collected news articles during 2009 to 2021 which containing ‘heavy snow’ in its body context and labelled whether each article correspond to specific damage fields such as car accident. To develop a classifier, we proposed a probability-based classifier based on the ratio of the two conditional probabilities, which is defined as I/O Ratio in this study. During the construction process, we also adopted the n-gram approach to consider contextual meaning of each keyword. The accuracy of the classifier was 75%, supporting the possibility of application of news big data to the impact-based forecasting. We expect the performance of the classifier will be improve in the further research as the various training data is accumulated. The result of this study can be readily expanded by applying the same methodology to other disasters in the future. Furthermore, the result of this study can reduce social and economic damage of high impact weather by supporting the establishment of an integrated meteorological decision support system.
        4,000원
        93.
        2023.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Chlorothalonil is continuously introduced into the marine environment and has significant toxic effects on various marine organisms, however, research on its effect on seaweed is limited. Therefore, we analyzed the impact of chlorothalonil on the early life stages of major aquaculture species in Korea, Undaria pinnatifida. U. pinnatifida female gametophytes were exposed to different concentrations of chlorothalonil (0, 0.03, 0.05, 0.10, 0.20, and 0.40 mg L-1), and their survival rate and relative growth rate were analyzed. The no observed effect concentration (NOEC), lowest observed effect concentration (LOEC), and median lethal concentration (LC50) for female gametophyte survival were determined as 0.05, 0.10, and 0.141 (0.121-0.166) mg L-1. NOEC, LOEC, and median effective concentration (EC50) for relative growth rate were 0.10, 0.20, and 0.124 (0.119-0.131) mg L-1. Therefore, female gametophytes of U. pinnatifida are expected to experience toxic effects at concentrations above 0.05-0.10 mg L-1 of chlorothalonil. These research findings are anticipated to serve as crucial reference data for evaluating the effects of chlorothalonil on the health of U. pinnatifida in the early life stages.
        4,000원
        94.
        2023.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        네팔의 시각 예술은 국가 정치의 중요한 영향을 받고 있는 현실적인 측면을 대표하고 있다. 본 연구의 주요 목적은 국가 정치와 시각 예술 간의 관계를 체계적으로 분석하는 것이다. 예술은 특정 사회의 이념뿐만 아니라 정치 철학과도 깊은 연관 이 있다. 리치비 시대와 말라 시대는 에베레스트 산을 정점으 로 시각 예술을 발전시켰다. 네팔의 예술은 네팔 사회 뿐만 아 니라 중국과 티베트에도 큰 의미를 지니고 있다. 정치 체제와 철학은 그 나라의 예술과 밀접한 관련이 있다. 대부분의 리치 비 왕조는 신에 대한 높은 헌신을 지니며 힌두교를 따르지만 불교도 동등하게 존중한다. 또한 중국과 티베트와의 관계가 긍 정적이다. 이러한 맥락에서 라나 규칙 아래에서의 시각 예술 발전과 라나 규칙의 공헌도 논의된다. 이 논문은 현재의 정치 적 개입과 네팔 시각 예술 분야에 미치는 영향에 대한 분석을 했다. 과거에는 정거 바하두르 라나, 마헨드라 왕, 비렌드라 왕 과 같은 정치적 리더들이 예술 발전을 촉진한 중요한 역할을 한 것으로 나타났다. 본 연구는 사회 변화를 주도하는 예술의 역할에 대한 논의를 포함하며, 정치는 국가 예술과 시각 문화 환경을 조성하는 중요한 요소임을 강조한다. 또한 탑과 시카라 스타일의 건축물은 여전히 네팔 말라 시대와 샤 시대를 대표하 고 있다.
        6,400원
        95.
        2023.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This study was conducted with the aim of confirming the impact and relative contribution of extreme weather to dry matter yield (DMY) of silage corn in the central inland region of Korea. The corn data (n=1,812) were obtained from various reports on the new variety of adaptability experiments conducted by the Rural Development Administration from 1978 to 2017. As for the weather variables, mean aerial temperature, accumulated precipitation, maximum wind speed, and sunshine duration, were collected from the Korean Meteorological Administration. The extreme weather was detected by the box plot, the DMY comparison was carried out by the t-test with a 5% significance level, and the relative contribution was estimated by R2 change in multiple regression modeling. The DMY of silage corn was reduced predominantly during the monsoon in summer and autumn, with DMY damage measuring 1,500-2,500 kg/ha and 1,800 kg/ha, respectively. Moreover, the relative contribution of the damage during the monsoons in summer and autumn was 40% and 60%, respectively. Therefore, the impact of autumn monsoon season should be taken into consideration when harvesting silage corn after late August. This study evaluated the effect of extreme weather on the yield damage of silage corn in Korea and estimated the relative contribution of this damage for the first time.
        4,300원
        96.
        2023.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        COVID-19 이후 경제위기와 급격한 환경변화로 인해 개인과 조직은 지속가능한 경력 형성에 주목하고 있다. 개인은 현대 기업이 요구하는 융ž복합 인재가 되기 위해 노력하고, 기업은 경력전환 및 리스킬링 (Re-skilling)/업스킬링(Up-skilling) 등 다양한 경력개발방식을 시도하여 변화에 대응할 수 있도록 인재 양성을 위한 전략을 추구하고 있다. 이에 따라 경력지속가능성에 대한 개인 및 조직 차원에 대한 논의가 필요하다. 본 연구는 이러한 연구의 필요성을 바탕으로 코칭리더십이 조직구성원의 경력지속가능성의 관 계에서 리더의 겸손과 주도성의 조절된 매개효과를 확인하고, 경력개발관점에서 리더 역할과 방향성에 대한 HR 시사점을 제공하는 것을 목적으로 한다. 연구를 위해 2023년 3월 ∼ 2023년 4월까지 기업 임직원 을 대상으로 312명의 데이터를 수집하였으며, Hayes(2013)가 제안한 PROCESS macro model 8번을 활용 하여 조절된 매개효과를 분석하였다, 분석 결과 첫째, 코칭리더십이 조직구성원들의 경력지속가능성에 긍 정적인 영향을 미치는 것으로 나타났다. 반면, 리더의 겸손은 조직구성원들의 경력지속가능성에 부정적인 영향을 미치는 것으로 나타났다. 둘째, 코칭리더십과 주도성의 관계에서 리더의 겸손이 유의한 조절효과 를 보였다. 마지막으로, 코칭리더십과 경력지속가능성의 관계에서 주도성과 리더의 겸손이 조절된 매개효 과를 보였다. 본 연구 결과를 바탕으로 조직구성원의 경력지속가능성을 실현하기 위해 리더의 역할과 촉 진할 수 있는 방향에 대해 논의하였으며, 조직구성원의 특성을 고려한 리더십 개발 방향에 대해 제언했다. 이는 조직구성원의 경력지속가능성을 촉진하고 발전시키는 데 의의가 있다.
        6,100원
        97.
        2023.08 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Background: The external rotation (ER) exercise in performed at a 90° abduction of the shoulder joint is an effective to strengthen the infraspinatus. However, failure of the humeral head to control axial rotation during exercise can be increased the posterior deltoid over activity. Biofeedback training is an effective method of promoting motor learning and control it could look forward to activate the infraspinatus selectively by controlling the humeral head during exercise. Objects: The aim of this study was investigated that whether biofeedback for axial rotation was effective to activate selectively the infraspinatus during ER exercise. Methods: The 15 healthy males participated, and all subjects performed both ER exercise in a sitting position with shoulder abducted 90° under conditions with and without axial rotation biofeedback. Exercise was performed in a range of 90° ER, divided into three phases: concentric, isometric, and eccentric. The infraspinatus and posterior deltoid muscle activity were observed using surface electromyography. Results: Both infraspinatus activity (p < 0.01) and infraspinatus to posterior deltoid activity ratio (p = 0.01) were significantly higher with biofeedback however, posterior deltoid activity was significantly lower with biofeedback (p = 0.01). The infraspinatus muscle activity and muscle activity ratio were the highest in the isometric contraction type, and there were significant differences for all contraction types (p < 0.05). Whereas, the posterior deltoid activity was the lowest in the isometric contraction type, and showed a significant difference between isometric and other two contraction types (p < 0.05), but no significant different between concentric and eccentric contraction. Conclusion: Our results indicate that the axial rotation biofeedback during sitting ER exercise might be effective method to activating selective infraspinatus muscle and recommended to enhance the dynamic stability of the shoulder joint.
        4,000원
        98.
        2023.08 KCI 등재 구독 인증기관 무료, 개인회원 유료
        본 연구는 아프리카 전자상거래 법률 및 규정이 중국-아프리카 디지털 무역에 끼치는 영향을 탐색한다. 이를 위해, 구조방정식 모델링을 이용해 중국-아프리카 ICT 상품 무역액, 아프리카 전자상거래 발전 지수, 그리 고 전자상거래 법률 및 규정간의 상호 영향을 분석하였다. 결과적으로, 아프리카 전자상거래 법률 및 규정이 아프리카 전자상거래 발전과 중국- 아프리카 디지털 무역에 모두 긍정적으로 작용함을 확인하였다. 하지만 과도한 세금은 이러한 발전을 제한하는 요소로 작용하였다. 이 연구는 방법론적 혁신을 포함하며, 아프리카 전자상거래 법률 및 규정의 개선과 디지털 무역의 발전을 촉진하는 실증적 근거를 제시하였다. 다만, 데이터 와 이론적 한계로 인한 제약점이 존재하며, 향후 연구는 이를 극복하기 위한 방안을 제시하였다. 이 연구는 이론적 가치와 실질적 시사점을 제 공한다.
        7,000원
        99.
        2023.08 KCI 등재 구독 인증기관 무료, 개인회원 유료
        본 연구는 초등학교 학교폭력 피해와 그루밍성범죄 피해의 관계에서, 우울과 폭력 둔감성의 이중매개 효과를 검증하였다. 연구대상으로는 초등학교 학교폭력 피해를 경 험한 991명을 대상으로 하였으며, 연구분석은 SPSS 28과 PROCESS Macro Model 6 프로그램을 사용하였다. 그 결과 학교폭력 피해, 그루밍성범죄 피해, 우울, 폭력둔감성 모든 변수 간 99% 유의수준(p <.01)을 충족하는 정(+)의 상관관계가 나타났다. 먼저, 학교폭력피해와 우울, 폭력둔감성 간 관계에서는 모두 정(+)의 관계가 있는 것으로 나타났으며, 그루밍 성범죄피해 간 관계에서는 학교폭력피해와 폭력둔감성은 정(+), 우울은 부(-)의 관계가 있는 것으로 나타났다. 마지막으로 학교폭력피해와 그루 밍성범죄 피해의 관계에서 우울과 폭력둔감성이 부분매개효과 및 이중매개효과를 검 증하였다. 그 결과 부분매개 하는 것으로 나타났으며, 하한값 .0001, 상한값 .0010으로 우울과 폭력둔감성의 이중매개효과가 나타남을 확인하였다. 따라서, 학교폭력피해 경험과 그루밍성범죄 피해 간 관계에서 우울감이 선행된 후 폭력에 둔감해지고, 이에 따른 그루밍성범죄 피해가 일어날 수 있음을 확인하면서 이 론적, 실천적 제언을 제시하였다.
        6,400원
        100.
        2023.08 KCI 등재후보 구독 인증기관 무료, 개인회원 유료
        This descriptive correlational study describes the relationship between collaboration among health care professions and nurses’ organizational commitment in the operating room. A cross sectional survey of nurses (N = 142) was conducted in March 2020. The participants were nurses with more than one year work experience in operating rooms at three university hospitals in Seoul and Gyeonggi-do. Collaboration among nurses was measured using the Nurse–Nurse Collaboration Scale, while collaboration between nurses and physicians was measured by the Nurse-Physician Collaboration Scale (NPCS). All analyses were conducted using the IBM SPSS Statistics, version 23.0 with independent t-test, one-way ANOVA, Scheffé test, Pearson's Correlation, and multiple regression. The results were as follows : The collaboration among operating room nurses was scored with an average of 2.87 out of a total of 4. Collaboration between operating room nurses to physician scored 3.47 average out of 5 total. Organizational commitment scored 3.24 average out of 5 total. The factors influencing the organizational commitment of nurses in operating rooms include collaboration among nurses and effective communication, as well as collaboration between nurses and physicians for decision-making regarding treatment and nursing care. The explanatory amount of general characteristic, nurse-physician collaboration, and nurse-nurse collaboration variables was 33%, 15%, 13% respectively. Based on these findings, to enhance collaboration among operating room nurses, there is a significant need for systematic education on communication skills and decision-making competencies, continuous research, and organizational efforts.
        4,200원
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