• 지식경영연구
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• 제10권2호
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• pp.85-103
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• 2009

Web 2.0, characterized as openness, sharing, and participation, has enabled Internet users to easily generate a variety of contents, and to share them through Web 2.0 services. Knowledge search service (KSS) is positioning itself as one of typical Web 2.0 services. Yet, few studies have sharpened our understanding of users' knowledge sharing behavior in the KSS environment. In order to address this knowledge void, this paper attempts to explore antecedents of their usage behavior in the KSS environment. Typically, they utilize stored knowledge and share their knowledge simultaneously. Considering this characteristic, our study regards service usage intention and knowledge sharing intention as final dependent variables. This study advances a research model based on Bhattacherjee's expectation-confirmation model, which is expanded by incorporating trust belief. Because of the openness of KSS, trust belief is believed to play a critical role in forming users' service usage intention and knowledge sharing intention. Furthermore, this study examines the difference of the antecedents' effects in terms of users' gender. We collected data from 275 respondents who have experience in using KSS. PLS (partial least squares) was employed for the analysis of the data. Analysis results confirm the important role of user satisfaction and trust belief in the formation of users' service usage intention and knowledge sharing intention. More importantly, trust belief has a more salient effect on knowledge service usage intention than user satisfaction. This study also shows the moderating role of users' gender. Finally, this paper provides managerial guidance on strategic planning aimed at improving users' service usage intention and knowledge sharing intention in the KSS environment.

• Journal of Astronomy and Space Sciences
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• 제31권2호
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• pp.169-176
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• 2014

Since the operation of the King Sejong Station (KSS) started in Antarctic Peninsula in 1989, there have been continuous efforts to perform the observation for the upper atmosphere. The observations during the initial period of the station include Fabry-Perot Interferometer (FPI) and Michelson Interferometer for the mesosphere and thermosphere, which are no longer in operation. In 2002, in collaboration with York University, Canada, the Spectral Airglow Temperature Imager (SATI) was installed to observe the temperature in the mesosphere and lower thermosphere (MLT) region and it has still been producing the mesopause temperature data until present. The observation was extended by installing the meteor radar in 2007 to observe the neutral winds and temperature in the MLT region during the day and night in collaboration with Chungnam National University. We also installed the all sky camera in 2008 to observe the wave structures in the MLT region. All these observations are utilized to study on the physical characteristics of the MLT region and also on the wave phenomena such as the tide and gravity wave in the upper atmosphere over KSS that is well known for the strong gravity wave activity. In this article, brief introductions for the currently operating instruments at KSS will be presented with their applications for the study of the upper atmosphere.

• 말소리와 음성과학
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• 제9권2호
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• pp.9-22
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• 2017

The purpose of this paper is to report the whole process of developing Korean Standard Speech Database (KSS DB). This project is supported by SPO (Supreme Prosecutors' Office) research grant for three years from 2014 to 2016. KSS DB is designed to provide speech data for acoustic-phonetic and phonological studies and speaker recognition system. For the samples to represent the spoken Korean, sociolinguistic factors, such as region (9 regional dialects), age (5 age groups over 20) and gender (male and female) were considered. The goal of the project is to collect over 3,000 male and female speakers of nine regional dialects and five age groups employing direct and indirect methods. Speech samples of 3,191 speakers (2,829 speakers and 362 speakers using direct and indirect methods, respectively) are collected and databased. KSS DB designs to collect read and spontaneous speech samples from each speaker carrying out 5 speech tasks: three (pseudo-)spontaneous speech tasks (producing prolonged simple vowels, 28 blanked sentences and spontaneous talk) and two read speech tasks (reading 55 phonetically and phonologically rich sentences and reading three short passages). KSS DB includes a 16-bit, 44.1kHz speech waveform file and a orthographic file for each speech task.

• 대한한의학회지
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• 제28권2호통권70호
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• pp.126-136
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• 2007

Objectives : In the present study, the effect of Kuwonsimsin-hwan (KSS) was tested in methotrexate (MTX)-induced immunosuppressed SD rats. Methods : Methotrexate was fed to white rats once a day for 4 days. After the immune responses of the rats deteriorated, dried extracts of Kuwonsimsin-hwan mixed in water was fed to the rats once a day for 14 days. We then measured the number of lymphocytes in peripheral blood and the percentage of B-cells, T-cells, CD3+CD4+T-cells, CD3+CD8+ T-cells and IL-2 productivity sampled from spleen and peripheral region. Results : (1) The number of lymphocytes and the percentage of T-cells and CD3+CD4+ T-cellsin peripheral blood increased significantly in the KSS group as compared with the control group. (2) The percentage of B-cells, CD3+CD8+ T-cells, and CD4+/CD8+ T-cells in peripheral blood were not different statistically. (3) The percentage of T-cells in spleen and IL-2 productivity of spleen cells increased significantly in the KSS group as compared with the control group. (4) The percentage of CD3+CD4+ T-cells in spleen increased in KSS the group as compared with the control group but without statistical significance. (5) The percentage of B-cells, CD3+CD8+ T-cells, and CD4+/CD8+ T-cells in spleen were not different statistically. Conclusion : It is concluded that Kuwonsimsin-hwan has immunostimulating effect on MTX-induced immunosuppressed SD rats.

• 대한관절경학회지
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• 제13권1호
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• pp.72-76
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• 2009

당뇨환자로서 관절경적 회전근 개 봉합술을 시행 후 견관절의 화농성 관절염으로 진단된 2예에 대해 관절경적 치료 및 추가적인 개방성 치료를 시행하였다. 관절경적 회전근 개 봉합술 후 감염은 평균 18일 뒤에 발생하였으며, 증상 발현으로부터 수술까지의 평균 기간은 65일이었다. 또한 기능 평가는 KSS, ASES, UCLA, Constant 점수를 이용하였다. 관절경적 변연 절제술과 추가적인 시술 후 평균 22.5일의 항생제 치료로 4개월에 염증이 치료되었으며 최종 결과는 KSS점수가 82점, UCLA점수가 33점, ASES점수가 91점, Constant점수가 71점이었다. 관절경적 회전근 개 봉합술 후 발생한 화농성 견 관절염은 관절경적 치료 및 추가적인 시술로 치료되었고, 관절 운동 범위 및 기능적 결과와 통증 및 만족도는 많이 개선되었다.

• Clinics in Shoulder and Elbow
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• 제13권2호
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• pp.244-249
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• 2010

목적: 본 연구는 제 2형 SLAP 병변에서 외상의 유무에 따른 손상기전의 차이 및 임상 결과의 차이를 비교하고자 한다. 대상 및 방법: 2007년 1월부터 2009년 5월까지 제 2형 SLAP 단독 병변으로 수술을 시행한 27예를 대상으로 하였다. 제 2형 SLAP 병변의 분류는 Burkhart에 의한 분류법을 이용하여 병변이 전상방부에 위치하면 제 1형, 후상방부는 제 2형, 전후방 복합 병변은 제 3형으로 분류하였다. 치료 결과는 술 전, 술 후의 UCLA 점수와 KSS 점수를 사용하여 측정하였다. 결과: 총 27예 중 외상군은 16예, 비외상군은 11예였다. 제 2형 SLAP 병변의 형태는 외상군에서 제 1형은 12예, 제 2형은 2예 그리고 제 3형은 2예였다(p=0.013). 비외상군에서는 제 1형 2예, 제 2형 6예, 제 3형 3예였다 (p=0.026). 즉 외상군에서는 전방 병변이 더 많이 발생하였고 (p<0.05), 비외상군에서는 후방 병변이 더 많이 발생한 것으로 추정할 수 있다 (p<0.05). 외상군에서 UCLA 점수 및 KSS 점수는 술 전 평균 18점 (14~23점), 48점 (32~76점)에서 술 후 32점 (28~33), 86점 (71~92점)이었다. 비외상군에서는 UCLA 점수 및 KSS 점수는 술 전 평균 21점 (18~25점), 58점 (41~68점)에서 술 후 29점 (26~31점), 81점 (68~89점)이었다. 임상결과에 있어서 두 군 사이의 통계학적으로 유의한 차이를 보이지 않았다 (p=0.317, 0.405). 결론: 본 연구에서 제 2형 SLAP 병변의 형태가 외상 기전에 따라 차이가 있음을 관절경 소견을 통해 확인할 수 있었다. 따라서 제 2형 SLAP 병변에 대한 수술적 치료를 고려할 때 외상 유무를 파악하여야 할 것이다.

• Journal of information and communication convergence engineering
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• 제15권2호
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• pp.97-103
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• 2017

Implementation of faster pairing calculation is the basis of efficient pairing-based cryptographic protocol implementation. Generally, pairing is a costly operation carried out over the extension field of degree $k{\geq}12$. But the twist property of the pairing friendly curve allows us to calculate pairing over the sub-field twisted curve, where the extension degree becomes k/d and twist degree d = 2, 3, 4, 6. The calculation cost is reduced substantially by twisting but it makes the discrete logarithm problem easier if the curve parameters are not carefully chosen. Therefore, this paper considers the most recent parameters setting presented by Barbulescu and Duquesne [1] for pairing-based cryptography; that are secure enough for 128-bit security level; to explicitly show the quartic twist (d = 4) and sextic twist (d = 6) mapping between the isomorphic rational point groups for KSS (Kachisa-Schaefer-Scott) curve of embedding degree k = 16 and k = 18, receptively. This paper also evaluates the performance enhancement of the obtained twisted mapping by comparing the elliptic curve scalar multiplications.

• Journal of Astronomy and Space Sciences
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• 제17권2호
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• pp.241-248
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• 2000

A groung Fabry-Perot interferometer has been used to measure atomic oxygen nightglow (OI 630.0nm) from the thermosphere (about 250km) at King Sejong station (KSS, geographic: $62.22^{\circ}$S, $301.25^{\circ}$E; geomagnetic: $50.65^{\circ}$S, $7.51^{\circ}$E), Antarctica. While numerous studies of the thermosphere have been performed on high latitude using ground-based Fabry-Perot interferometers, the thermospheric measurements in the Southern Hemisphere are relatively new and sparse. Therefore, the nightglow measurements at KSS play an important role in extending the thermospheric studies to the Southern Hemisphere. In this study, we investigated the effects of the geomagnetic and solar activities on the thermospheric neutral temperatures that have been observed at KSS in 1989 and 1997. The measured average temperatures are 1400K in 1989 and 800K in 1997, reflecting the influence of the solar activity. The measurements were compared with empirical models, MSIS-86 and semi-empirical model, VSH.

• Archives of Plastic Surgery
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• 제51권2호
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• pp.182-186
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• 2024

Kearns-Sayre syndrome (KSS) is a rare mitochondrial disease that affects young adults, due to a deletion of mitochondrial DNA and characterized by the triad: age of onset lower than 20 years, chronic progressive external ophthalmoplegia, and an atypical pigmentary retinopathy. It is also characterized by other endocrine, neurological, and especially cardiac impairment with a very high risk of cardiac complications during surgical procedures under all types of anesthesia. We report a case of KSS revealed by severe bilateral ptosis and confirmed by a muscle biopsy with "ragged red fibers." The ptosis was surgically managed by cautious Frontal suspension under local anesthesia "Frontal nerve block." Through this case, we discuss challenges in the management of KSS patients.

• Clinics in Shoulder and Elbow
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• 제15권2호
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• pp.86-90
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• 2012

목적: 회전근 개 파열과 동반된 견봉 쇄골 관절 병변에 대해 비수술적 치료를 시행한 후 견봉 쇄골 관절 병변이 동반되지 않은 환자들과 비교함으로써 원위 쇄골 절제술의 필요성에 대해 알아 보고자 하였다. 대상 및 방법: 2005년 1월부터 2011년 6월까지 본원에서 회전근 개 봉합술을 시행받고 최소 9개월 이상 추시 관찰이 가능하였던 45예를 대상으로 연구하였다. 이학적 검사상 견봉 쇄골 관절의 압통이 있고 자기공명영상 검사상 병변이 있는 환자를 견봉쇄골 관절 병변이 동반된 군으로 분류하였으며, 그렇지 않은 환자를 병변이 동반되지 않는 군으로 분류 하였다. 두 비교군 환자의 시간적 추이에 따른 견관절 근육의 외전, 내회전 및 외회전 근력 측정 및 ASES, KSS score 를 조사하여 비교 분석하였다. 결과: 견봉쇄골 관절의 병변이 있는 군에서의 근력 측정 결과 술 전 외전 8.05 (${\pm}4.54$), 내회전 11.33 (${\pm}6.06$), 외회전 10.24 (${\pm}5.27$)에서 술 후 외전 13.26 (${\pm}5.50$), 내회전 17.51 (${\pm}6.80$), 외회전 15.60 (${\pm}5.37$)로 향상된 결과 보였으며 KSS score 는 술 전 49.07 (${\pm}15.28$)점에서 술 후 84.48 (${\pm}10.97$)점, ASES score는 술 전 48.65 (${\pm}13.27$)점에서 술 후 84.65 (${\pm}9.86$)점으로 호전된 결과를 보였다. 견봉 쇄골 관절의 병변이 없는 군의 근력 측정 결과 술 전 외전 6.42 (${\pm}3.11$), 내회전 7.59 (${\pm}4.81$), 외회전 7.93 (${\pm}4.49$)에서 술 후 외전 15.85 (${\pm}7.35$), 내회전 19.18 (${\pm}9.14$), 외회전 16.95 (${\pm}5.70$)로 향상된 결과 보였으며 KSS score는 술 전 42.12 (${\pm}6.43$)점에서 술 후 83.44 (${\pm}6.29$)점, ASES score 는 술 전 41.37 (${\pm}7.42$)점에서 술 후 83.17 (${\pm}7.01$)점으로 두 군 모두 호전된 결과를 보였으나, 견봉 쇄골 관절의 병변이 있는 군에 비해 근력 측정값의 변화 및 ASES, KSS score 수치는 통계학적으로 유의한 차이를 보이지 않았다 (p>0.05). 결론: 회전근 개 파열과 동반된 견봉 쇄골 관절 병변이 있는 군과 없는 군에서 비수술적 치료를 시행한 후 비교 분석한 결과 두 군 모두 술 전에 비해서 술 후 근력 및 ASES, KSS score는 호전된 결과를 나타냈으며, 수술적 치료 후 평가 결과 두 군간에 유의한 차이가 없음을 알 수 있었다. 따라서 수술 전 회전근 개 파열에 동반된 견봉 쇄골 관절 병변에 대한 치료로서 원위 쇄골 절제술 선택도 가능하지만 보존적인 치료도 충분히 고려해야 될 것으로 생각된다.