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      • 패킷 스위칭 네트워크 상에서의 공정성 척도

        허남철 대구미래대학 2001 論文集 Vol.19 No.1

        In this paper fairness measure was defined to vary linearly by the change of deviation amount from desired time delay or cost, etc., so that we are able to keep sensitivity of fairness measure uniform over the entire range. Adopting the flexible parameters, fairness measure has a complete flexibility that enables a network designer to measure fairness vector has an effect of including all the factors to which fairness can apply. Thus the generalized form of fairness measure was derived, Comparison of fairness using various capacity assignment strategies is done. It was reaffirmed that Min-max capacity assignment strategy is the most powerful in concentrating each end-to-end time delay and cost around the mean end-to-end time delay and cost.

      • 에폭시 수지 콘크리트의 경화수축 및 크리이프 특성

        허남철,연규석 한국콘크리트학회 1990 콘크리트학회지 Vol.2 No.1

        이 연구는 충진재의 유무에 따른 철근 콘리크트의 경화수축과 초기 크리이프 특성을 실험적으로 구명한 것이다. 그 결과, 경화수축은 보관온도가 높아질수록 커졌고, 충진재를 사용한 경우가 온도의 영향을 더 크게 받는 것으로 나타났다. 또한, 초기 크리이프는 재하시간과 응력일강도화가 증가함에 따라 증가했고, 강성변형이 클수록 컸는데, 이는 충진재를 첨가한 경우가 더 크게 나타났다. This study was accomplished to investigate the characteristics of hardening shrinkage and initial creep of epoxy resin concrete depending on the presence of filler. According to the test results, the hardening shrinkage was increased with increment of sLOrage temperature, and the ef¬feel of tempemture on the hardening shrinkage of epoxy resin concrete with 6% filler was more Significant than that of epoxy resin concrete without filler. Also, the initial creep strain was increased with loading times, stress--strength ratio and elastic strain, and the values for opoxy resin concrete with 6 % filler are higher than that for eposy resin concrete without filler.

      • KCI등재후보

        지적자극이 역할 내 행동과 심리적 웰빙에 미치는 영향에 관한 연구 -일에 대한 희망과 리더와의 친밀감을 중심으로-

        허남철,서재현 한국기업경영학회 2009 기업경영연구 Vol.16 No.3

        This study started with an ideas that a leader could have significant influences on its subordinates and their attitude and behaviors. Positive organizational behaviors could be formed by leader’s behaviors with intention to make employees move toward a direction an organization insisted. The specific purposes of this paper was to investigate the influences of intellectual stimulation on the in-role behavior and psychological well-being through intimacy and hope for work. Hope for work and intimacy were used as positive psychological state of employees which mediated the influence of intellectual stimulation on employee behaviors. Variables used for the study were selected considering the role of a leader in developing positive psychological states of employees. Hypotheses were constructed based on literatures in the areas of transformational leadership and positive organizational behavior. Following 10 hypotheses were constructed: H1: Intellectual stimulation will have positive influences on intimacy. H2: Intellectual stimulation will have positive influences on hope for work H3: Hope for work will have positive influences on psychological well-being. H4: Hope for work will have positive influences on in-role behavior. H5: Intimacy will have positive influences on psychological well-being. H6: Intimacy will have positive influences on in-role behavior. H7:Intellectual stimulation will have positive influences on psychological well-being through hope for work. H8:Intellectual stimulation will have positive influences on in-role behavior through hope for work. H9:Intellectual stimulation will have positive influences on psychological well-being through intimacy. H10: Intellectual stimulation will have positive influences on in-role behavior through intimacy. The date used for empirical analyses were collected by using a questionnaire which contained measurements with proven psychological properties. And the participants of the study were selected based on their own decision and were given specific guidelines about the study. The samples were collected in the telecommunication industry in Korea. Among 448 employees participated in the study, 367 employees were male and 81 were female. On the average, they have been working with their leader about 19.9 months when they answered a questionnaire. And the collected data were analyzed using SPSS. To test hypotheses, regression analyses and mediating regression analyses were used. The results of the were as followers: First, intellectual stimulation was found to have positive impact on hope for work, while it has significant positive impact on intimacy. Second, hope for work was found to have significant positive influences on in-role behavior and it showed significant positive influences on psychological well-being. Third, intimacy had significant positive impact on psychological well-being. Fourth, intellectual stimulation had significant indirect impact on in-role behavior and psychological well-being through hope for work, while they had significant indirect influences on in-role behavior and psychological well-being through intimacy. The results of the study contributed to the development of theories in areas of positive organizational behavior and development of employee attitudes in an organization. Intimacy and hope for work were found to have the role of positive organizational behavior. This contributed to the theoretical development of positive organizational behavior. On the other hand, this study proved that a sub-dimension of transformational leadership had indirect influences on employee attitude and behavior like psychological well-being and in-role behavior through intimacy and hope for work. This result extended transformational leadership research to areas of positive organizational behavior. Practically, the result of the study can be applied to the employees’ motivational development and transformational leadership development programs. Employees... 본 연구의 목적은 변혁적 리더십의 구성요인인 지적자극이 구성원의 심리적 상태를 통해 구성원의 행동으로 이어지는 간접적인 영향을 알아보는 것이었다. 구성원의 심리적 상태로서 구성원의 일에 대한 희망과 친밀감을 활용하였으며, 구성원의 조직 내 행동으로 구성원의 심리적 웰빙과 역할 내 행동을 이용하였다. 통신산업에 종사하는 본 연구의 참여자들은 자발적인 참여를 원칙으로 하였으며, 많은 연구를 통하여 신뢰성과 타당성이 확보된 측정도구를 활용하여 구성된 설문지를 이용하여 본 연구의 실증분석에 사용된 자료를 수집하였다. 수집된 자료를 매개 회귀분석을 활용하여 검증하였으며 검증 결과는 다음과 같다. 첫째, 지적자극은 구성원의 친밀감 및 일에 대한 희망 형성에 긍정적인 유의한 영향을 미치며, 둘째, 일에 대한 희망은 역할 내 행동과 심리적 웰빙에 중요한 긍정적인 영향을 미치는 것으로 나타났으며, 셋째 친밀감은 구성원의 심리적 웰빙에 중요한 긍정적인 영향을 미치며, 넷째, 지적작극은 일에 대한 희망과 친밀감을 통해 역할 내 행동 및 심리적 웰빙에 각각 간접적인 영향을 미치는 것으로 나타났다. 본 연구의 결과는 구성원들이 조직 내 경험이 구성원의 심리적 상태를 거쳐 구성원의 행동에 영향을 미칠 수 있다는 것을 직접적으로 검증하였다는 점에서 의의를 찾아 볼 수 있으며, 구성원의 긍정적인 심리적 상태로서 역할 내 희망 및 친밀감을 조직행동분야에 응용해 보았다는 점에서 의의를 찾아 볼 수 있다. 토론 및 결론을 통하여 본연구의 이론적 기여도 및 실무적인 기여도에 대하여 심도 있는 논의를 제공하였으며, 본 연구의 한계에 대하여서도 언급하였다.

      • KCI등재

        여성 근로자의 근로환경이 자녀양육 부담에 미치는 영향

        허남철 ( Nam-cheol Heo ),정유림 ( Yu-rim Jeong ),한삼성 ( Sam-sung Han ),정성화 ( Seong-hwa Jeong ) 한국보건정보통계학회(구 한국보건통계학회) 2020 보건정보통계학회지 Vol.45 No.3

        Objectives: The aim of this study was to investigate the association between working environments and parenting burden in women workers. Methods: A total of 1,033 married women were selected from the database of the 7th Korean Longitudinal Survey of Women and Family (KLoWF). Parenting burden and working environments were calculated based on responses of the KLoWF. Univariate and multivariate analyses ware performed to assess the crude and adjusted associations using PASW 18.0. Results: There was an independently positive association between excessive working (b=0.37, p<0.001), irregular working (b=0.17, p<0.001), temporal oppression on workload (b=0.08, p=0.011) and parenting burden in women workers after adjusting for socio-demographics. Conclusions: This study suggests that working environments are important factors for parenting burden in women workers. The findings of this study will be helpful to policy makers to design plans to decrease the parenting burden in women workers.

      • KCI등재

        IEEE 802.11 무선 랜에서 이웃 채널 정보에 기반한 점진적 채널 스캔 방법

        허남철(Nam Chul Huh),김선명(Sunmyeng Kim) 한국산업정보학회 2015 한국산업정보학회논문지 Vol.20 No.5

        IEEE 802.11 무선 랜에서 단말들은 자유롭게 이동할 수 있기 때문에 끊김 없는 서비스를 제공하기 위해 핸드오프가 중요하다. 무선 랜에서 핸드오프할 때 많은 채널에 대해 스캔을 수행하기 때문에 핸드오프 지연이 커져 실시간 서비스를 지원하는데 한계가 있다. 본 논문에서는 실시간 서비스를 위해 핸드오프 지연을 최소화하는 방법을 제안한다. 제안하는 방법에서, 무선 랜에 처음 접속하는 단말은 자신이 스캔한 채널 정보를 AP(Access Point)에게 전송한다. AP는 단말이 전송한 정보를 이용하여 서로 이웃하는 채널들의 정보를 테이블로 만들고 비콘 프레임을 통해 이 테이블을 단말들에게 전송한다. 단말들은 핸드오프를 진행할 때 전체 채널에 대해 스캔을 수행하지 않고 테이블에 있는 정보를 이용하여 일부 채널에 대해서만 스캔을 수행한다. 따라서 제안하는 방법은 핸드오프 지연을 줄일 수 있고 실시간 서비스를 지원할 수 있다. Handoff is a critical issue for seamless roaming in IEEE 802.11-based wireless networks. In order to provide real-time services, handoff mechanism must be provided. However, the IEEE 802.11 standard handoff is not appropriate to provide the services, because it is based on the full-scanning approach which spends too much time searching Access Point (AP). In this paper, we propose a new scheme, which can reduce the scanning latency. A station performs full-scanning operation for finding APs when it enters wireless networks for the first time. The station sends the scanned channel information to AP. AP maintains the neighbor channel table based on the information received from stations. A station performs the partial-scanning by using the table. Therefore, the proposed scheme can reduce the scanning latency.

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