• Annual Conference of KIPS
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• 2013.05a
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• pp.71-72
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• 2013

최근 연구 개발되고 있는 스토리지 클래스 메모리는 정체되어 있는 스토리지와 DRAM 산업에 큰 변화를 가져올 것으로 예상된다. 현재 컴퓨팅 환경에서 스토리지의 성능 저하요소가 큰 이슈로 야기되어지는 가운데 본 논문에서는 TPC-C 벤치마크를 이용하여 임의 쓰기와 덮어 쓰기 연산 시 발생되는 문제점들을 분석한다. 실험 결과를 통해 향후 스토리지 클래스 메모리를 활용하여 기존 쓰기 연산 시 발행 하는 문제점들을 해결할 수 있는 방안에 대해 논의 한다.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.18 no.3
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• pp.193-200
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• 2018

In a formal speech, the speaker's voice has a variety of effects on the listener. Depending on the voice characteristics, the effectiveness and efficiency of the speech change as well. In the presidential election, the candidate's voice characteristics will affect the cognition of voters. Thus, we need to understand about the a more effective voice of candidate. This study proves whether voters will change their cognition if the candidate changes owe voice. If the cognition of voters can be changed according to the changed voice characteristics of the candidate, we will be able to explain what voices are needed for the candidate. We will also be able to suggest the necessary voice change strategies for effective speech. We describe cognition change of the voters according to the change of the voices of the presidential candidates by the dimension of the sori-engineering and the cognitive dimension. Hence, this study explains the voice characteristics and change strategies needed for candidates for effective speech.

• Journal of the Korean Society of Earth Science Education
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• v.10 no.3
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• pp.254-261
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• 2017

This study is to investigate preconception of elementary school students and Belizean elementary school teachers and to devise experiment to understand a cause of seasonal change. An open-ended questionnaire and interviews were conducted for 91 6th grade students who didn't learn seasonal change and 10 Belizean teachers to find out preconception of seasonal change and they were categorized by using inductive analysis. They thought that the Earth's rotation, the distance between the Sun and the Earth, the Earth's revolution, pollution and climate change cause seasonal change. And it found out that these misconceptions come from difficulty in awareness of space and impreciseness of textbooks and books and so on. The experiment was designed to correct inaccurate preconception and to improve lessons of seasonal change. It is to measure a meridian altitude and a length of daytime and nighttime and to compare them. This experiment can help to understand the cause of seasonal change by measuring natural phenomenons like the meridian altitude and the change of length of daytime by model.

• Journal of Korea Society of Industrial Information Systems
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• v.16 no.4
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• pp.163-174
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• 2011

The purpose of this study is to examine the antecedents of employee's organizational change commitment during organizational change. We propose that leader-member exchange (LMX) and trust in the organization could foster employee's commitment to change. A theoretical model linking the role of leader-member exchange and trust in the organization to affective commitment and normative commitment to organizational change through leadership have tested in a study of 303 respondents from 15 organizations reporting that their organizations were undergoing significant change due to the turmoil environment and M&A. We develop the hypotheses from the prior studies and empirically test them in the context of personnels who have survived from the drastic organizational changes. Based on the analyzed results, we discussed the theoretical implications and limitations.

• The Journal of the Korea Contents Association
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• v.19 no.12
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• pp.38-56
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• 2019

Climate change is tough global issue with human being to tackle in cooperative manners, because climate change affects globally and has long-term detrimental impacts. To get a clue to this intricate problem, vertical governance (global, regional, national, and local) with horizontal governance should be well orchestrated. In this research, we analyzed about 24,000 articles in Korean daily newspapers from 1990 to 2018 to find out vertical and horizontal governance characters of Korean climate change. The result showed that Korean government followed the global issues but lacks relations with neighbor countries. and found a little actions in local government. In horizontal governance aspect, Korean government approached the climate change as a tool for economic development and lead the issues without communication with other two player which are market and civil society. We proposed to use market mechanism to facilitate the participation and Climate Change Framework Act to setup the mechanism for cooperation.

• Journal of the Korean Institute of Intelligent Systems
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• v.19 no.6
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• pp.773-778
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• 2009

This paper studied the training methods less affected by the emotional variation for the development of the robust speech recognition system. For this purpose, the effect of emotional variations on the speech signal were studied using speech database containing various emotions. The performance of the speech recognition system trained by using the speech signal containing no emotion is deteriorated if the test speech signal contains the emotions because of the emotional difference between the test and training data. In this study, it is observed that vocal tract length of the speaker is affected by the emotional variation and this effect is one of the reasons that makes the performance of the speech recognition system worse. In this paper, vocal tract normalization method is used to develop the robust speech recognition system for emotional variations. Experimental results from the isolated word recognition using HMM showed that the vocal tract normalization method reduced the error rate of the conventional recognition system by 41.9% when emotional test data was used.

• The Journal of Natural Sciences
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• v.10 no.1
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• pp.123-131
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• 1998

This research was investigated the improved changes of Korean traditional costume after introducing the western costumes in this society. For this study microfilms of Chosun llbo, the popular newspaper since 1920s, and costume magazines for 1950s and 1960s were examined. The periods of the improved changing of Korean traditional costume were divided by the characteristics of qualitative and quantitative changes. Those were two, such as passive period and active period of change. At passive period, the change was not far from the original from of traditional costume and it was limited to the waist of skirt, length and width. But at active period, there was distinctive change from the previous period. Active period is divided by 2 sub-period again. In 1950s, the concept of darts of western costume was accepted to Korean costume and there was the western clothing for everyday costume, the characteristics of Korean costume were added to the base of the western clothing. It was named 'Arirang dress'. Original Korean costume had worn for special occasions since late 1950s.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.3 no.1
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• pp.3-9
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• 1999

This study is focused on the developing of the telecommunication technique for the analysis on the social changes. In the scope and method of this study there must invalve following three items; change living environment, solution of medical problom, solution of education problem. The results of this study is as follow: First, telecommunication technique policy must be constructed in Korea. Second, digitalizing interchange machine and wire network must be promoted, presenting the development and establishment direction of B-ISDN. Third, the telecommunication policy in future must be able to unify all the networks.

• Proceedings of the Korea Water Resources Association Conference
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• 2018.05a
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• pp.175-175
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• 2018

우리나라에서 발생하는 대규모 자연재해의 상당부분은 강우에 의한 홍수피해이다. 최근 이러한 홍수피해는 기후변화와 더불어 극한강우 현상의 빈발에 의한 새로운 재해양상으로 전개되고 있으며, 이에 따라 정부에서도 재해발생시 원상복구의 개념이 아닌 항구복구의 개념으로 복구사업을 수행하고 있다. 그러나 설계에 기후변화에 대한 영향을 반영하고 있지 못하기 때문에 기후변화에 의하여 미래에 발생할 극한강우로 반복적인 피해가 예상되고 있으므로 기존의 방재성능목표 강우량의 설정 방법에 대한 개선이 필요하다. 전 세계적으로 이러한 기후변화에 의한 현상을 모의하기 위한 연구로 전지구기후모델(Global Climate Model, 이하 GCM)과 지역기후모델(Reginal Climate Model, 이하 RCM)을 사용하고 있다.우리나라 기상청에서도 CMIP5 국제사업의 표준 실험체계를 통해 전지구 기후변화 시나리오 산출을 위해서 영국 기상청 해들리센터의 GCM인 HadGEM2-AO를 도입하였다. 또한 한반도 기후변화 시나리오를 산출하기 위해 HadGEM3-RA 모형을 이용하여 전지구 기후변화 시나리오를 역학적으로 상세화하고 이를 한반도에 대해 12.5km 공간 해상도로 일 자료를 제공하고 있다. 하지만 유역규모 혹은 지점규모에서 사용하기 위해서는 이러한 일자료의 시 공간적인 상세화기법이 요구된다. 본 연구에서는 기후변화를 고려한 방재성능목표 강우량 개선 방향을 제안하기 위해 다양한 연구단에서 도출된 상세화 결과를 수집하고 비교분석을 통해 기후변화를 고려하고자 하였다. 다양한 연구기관에서 생산된 미래 확률 전망을 살펴본 결과, 동일한 GCM자료를 사용하더라도 상세화 방법론에 따라 서로 다른 결과가 도출되는 것을 확인하였다. 미래 예측의 불확실성을 고려하면 특정한 방법론이 우수하다고 평가하기는 어려움에 따라 앙상블 평균을 활용한 개선방향을 제안한다. 본 연구의 결과는 전국 지자체의 강우특성만을 고려한 것으로, 연안지역의 경우 해수면 상승을 고려하여 추가적인 대책이 필요할 것으로 판단된다.

• Journal of Korean Society of Environmental Engineers
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• v.39 no.9
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• pp.534-541
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• 2017

The bioreactor type of landfill is to operate to enhance waste decomposition by continuously supplying water such as leachate and wastewater within the landfill, which helps increase the landfill gas production, which in turn prematurely stabilize the landfill. Recently, the environmental law for the operation of the bioreactor type of landfill has been enacted and thereafter the bioreactor type of landfill has been introduced for the first time in Korea to the SUDOKWON landfill site. In order to properly apply for bioreactor to the landfill, it is necessary to investigate the water distribution inside the landfill so that water recirculation should be optimally allocated with the zone of concern. In this regard, electrical resistivity survey has been suitably performed to delineate the water distribution in the landfill. That is, it has surveyed for long-term of period that the recirculation of leachate has been properly reflected from electrical resistivity within the second landfill of SUDOKWON landfill site. As a result, the electrical resistivity immediately corresponded to the variation of the extent of the seasonal temperature dynamics. From this, a calibratrion could be accomplished by correlating between temperature and electrical resistivity obtained from this study that can be applicable for optimally monitoring to keep the ideal operating condition for the bioreactor type of landfill.