• Proceedings of the Korean Society of Computer Information Conference
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• 2016.07a
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• pp.3-4
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• 2016

멀티스레드 프로그램의 수행 중에 발생할 수 있는 자료경합은 프로그래머가 의도하지 않은 비결정적 수행으로 인해 신뢰할 수 없는 프로그램의 결과를 발생시킨다. 이러한 자료경합의 디버깅을 위해서 시간 및 자원적 비용이 과도하게 발생하기 때문에 프로그램의 수행 중에 이를 용인하고 치유하는 것이 중요하다. 본 논문은 멀티스레드 프로그램을 대상으로 소프트웨어 트랜잭셔널 메모리(STM)를 사용하여 공유변수에 대한 트랜잭션 영역을 설정하고 공유변수에 대한 이벤트 충돌 유형에 따른 자료경합 치유기법을 설계한다. 최종적으로는 프로그램 수행 중에 자료경합을 치유하는 기법의 실현가능성을 확인한다.

• Journal of the Korean Society for Railway
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• v.13 no.6
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• pp.589-594
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• 2010

Superimposition of horizontal and vertical curves may hamper the ride comfort and running stability of train and largely affect the maintenance costs. However, in many cases, it is not easy to make a track alignment plan because of the geographic conditions or undesirable environmental factors. In this paper, a comparative study on the effect of superimposition of vertical and horizontal curve on the ride comfort and optimum horizontal curve conditions was performed. That is, optimal cant and ride comfort analysis with and without a vertical curve superimposed on the horizontal curve were evaluated. Also the superimposition effect on ride comfort and alignment conditions in high speed zone were evaluated. From the analysis results, it was found that the ride comfort is similar to that at the only horizontal curves when applying the compensation cant for the superimposed site.

• 전기의세계
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• v.46 no.1
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• pp.28-32
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• 1997

진공관(전자관)은 무선통신, 레디오 방송, 레이다, 전자계산기, VHF 텔레비젼 방송, 마이크로웨이브중계, 컬러(color) 텔레비젼 방송, 전자계측, 전자진단, 위성통신, UHF 텔레비젼 방송, 위성방송 등 통신 및 전자기술의 발전에 상응하여 다양하게 발전 해 왔다. 이러하던 중, 1948년데 이르러 트랜지스터가 미국에서 발명되어 이 고체 디바이스가 대두하면서 이것이 발전을 거듭하는 동안 진공관(전자관)은 이 고체 디바이스와 경합을 하고 있으며 결과적으로 진공관(전자관)은 응용면에서 특히 통신, 방송에 관련되는 진공관들의 상당부분이 고체 디바이스에 자리를 넘겨주고, 시장도 극히 협소해졌다. 나아가 국제적인 동업자와의 경합, 진공관(전자관)동업자끼리의 경합이 있는 등, 진공관(전자관)의 환경은 점점 엄중해진 것이 현재의 상황이다. 그렇다고는 하지만, 여전히 진공관(전자관)이어야만 하는 영역이 있으며, 개발의 필요를 강하게 받고 있다. 이의 개발에 대한 국제협력의 길도 열려 있으며, 금후에도 기술의 계속과 발전을 위해서의 노력이 계속되어, 정력적인 개발이 진행되리라고 보아진다. 금후의 전개를 기대하고 싶다.

• Proceedings of the Korean Society of Computer Information Conference
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• 2016.01a
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• pp.9-10
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• 2016

본 논문에서는 멀티 스레드 기반 병렬 프로그램의 동적 분석을 통한 자료경합 탐지를 위해 효율적인 감시 필터링 기술을 제시한다. 제시하는 감시 필터링 기술은 자료경합과 같은 동시성 오류를 탐지하기 위해 프로그램의 수행 중에 발생하는 공유 메모리에 대한 스레드들의 접근 분석 시에 동일한 코드영역을 단순 반복하는 스레드들을 감시대상에서 제외시킴으로써 동적 분석을 위한 추가적인 오버헤드를 최소화한다. 제시하는 필터링 기술을 수행 중 자료경합 탐지 도구에 적용한 실험적 평가를 통해 개선된 수행시간 오버헤드의 제공이 가능함을 보인다.

• Journal of the Korean Geographical Society
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• v.43 no.4
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• pp.599-619
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• 2008

Korean peninsula has a long history and a geopolitical location as a buffer tone, which has provided the conditions for cultural dynamism and diversity across space and time. The changing processes of place names in Korea is considered to be better suited to the study on cultural politics that is interested in the culture wars over the meaning of culture among different social subjects. In order to ensure the legitimacy of cultural politics for the study of place names in Korea, this study attempts to make a theoretical construction based on the concepts of place identity, territorial contestation, and the politics of scale. Cultural and linguistic theories to be best applied to the study of place names in Korea are the theories on Angehm's and Castells' identity, $P{\hat{e}}cheux's$ identification, Hall's decoding, and Voloshinov's ideological sign. Power relations involved in the inclusion and exclusion are necessarily concerned with the process of constructing a place identity or territorial identity by means of a place name, which represents identity and ideology of a social subject. In the examination of this process, it is necessary to take the elements of identity, ideology and power relations into consideration. In this study, therefore, the politics of scale is experimented for its applicability in the study of place name in Korea, which is expected to accommodate concepts of boundary, territory, territoriality and territorialization. In the end, it is suggested in this study that a series of basic and interdisciplinary studies on the cultural politics of place names in a range of area should be undertaken along with the enough theoretical knowledge of cultural politics.

• Journal of Science and Technology Studies
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• v.14 no.2
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• pp.199-222
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• 2014

Functional Magnetic Resonance Angiography (fMRA) was a technoscientific innovation that allows scientists to directly view the changes made in the blood vessels of a brain. fMRA was first developed at Neuroscience Research Institute (NRI) in Korea. fMRA mainly utilizes 7 Tesla MRI technology, and NRI is equipped with the instrument. First article on fMRA was published in 2008, and two more papers in 2010 and 2012 consecutively had been published on the newly developed technique. However, fMRA is a competitive technology with existing fMRI. Both techniques capture microvascular changes in a brain, and by doing it, both techniques visualize the cognitive and affective changes. fMRI technology was introduced by Seiji Ogawa in the early 1990's and has been widely used since then. In contrast, fMRA was a newer technology and rather unknown. Developers of fMRA in NRI used series of signifiant-politics in order to make it better known to scientific community as well as public. By resetting the boundaries of existing concept of fMRI, they tried to lower the threshold of a new concept/technique. This case study shows how technoscientists use semiotic strategies governing new technology.

• TTA Journal
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• s.100
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• pp.161-169
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• 2005

IEEE802.15에서 표준화가 진행중인 WPAN(wireless personal network)은 개인영역 네트워크 혹은 근거리 무선 네트워크를 구축하기 위한 기술로, 개인용 컴퓨터, PDA, 주변기기, 휴대전화, 가전 등의 휴대나 이동 컴퓨팅을 위한 기술이다. IEEE802.15.1에서는 블루투스, IEEE802.15.4에서는 ZigBee를 위한 저속 WPAN(low rate WPAN) 그리고 IEEE802.15.3에서는 고속 WPAN(high rate WPAN)에 대한 표준화를 담당하고 있다. 본 고에서는 IEEE802.15 산하 TG3a에서 표준화 중인 Alt-PHY 기술로 경합을 벌이고 있는 MBOA(Multi-Band Orthogonal frequency division multiplexing Alliance) UWB(ultrawideband)에 대한 활성화를 꾀하고 있는 WiMedia Alliance의 시험인증 동향을 고찰하고자 한다.

• Journal of the Korean Geographical Society
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• v.40 no.5 s.110
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• pp.553-570
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• 2005

On Kyeryong Mountain, different religious(or ideological) groups have endowed space and place with amalgams of different meanings, uses and values. In addition to Buddhism and Confucianism, Shamanism and other popular beliefs have practiced their own ideologies(or powers) to create and maintain their own territories and identities. The geographies of resistance, involving Shamanism, have been scattered all over the mountain, discontinuous in the territorialization. These geographies of resistance could be identified the best around the most sacred sites, such as Sambulbong, Amyongch'u and Sutyongch'u. The entanglement of Shamanism with Buddhism, in various patterns through space and time, has indeed contributed to the survival of Shamanism as a subordinate power.

• Journal of Radiation Protection and Research
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• v.10 no.1
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• pp.67-73
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• 1985

The manganous sulfate bath method for neutron source calibrations at the K-SRI is described together with the measurement of neutron emission rate of a source and the corrections applied for capture by competing nuclei of neutrons, and thermal neutron leakage, neutron absorption in the source itself. The commercially available neutron sources (Am-Be, $^{252}Cf$) for the calibration checks of neutron radiation instruments in the MeV range are considered in this paper.

• Journal of the Economic Geographical Society of Korea
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• v.22 no.4
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• pp.526-538
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• 2019

This study aims to understand history and adaptive strategies of Bitgoul iCOOP Consumer's Coopertive Association(BCCA). BCCA have twofold identity as civil society organization and economic management organization. Going through several ups and downs from the founding up to now date, BCCA has adapted successfully. The numbers of association member have steadily increased and activity areas have extended consistently. Moreover united activity with local civil society have expanded both quantitatively and qualitatively. These success results from store business which stated from 2008. But maintaining successful management conditions, the numbers of association member should increase steadily and staff organization have grown in size. At the results, BCAA have been bureaucratized and recruitment of core staffs is difficult more and more.