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Ji Chang Woo,Kim Nam-Jung,Lee Sang-Guei,Hwang-Yong Kim,Choi Hoon-Sik,Song In-Sun,Ko Jee Sun 한국응용곤충학회 2010 한국응용곤충학회 학술대회논문집 Vol.2010 No.05
We analyzed the chirp sound and behavior of Teleogryllus emma with observation system, which was consisted of computer, ccd-camera and microphone. Computational methods of wavelet transformation and Self-Organizing Maps (SOM) were utilized to characterized the chirp sound of insect species for automatic counting in this study. Wavelets were initially applied to feature extraction of the chirp sound. Wavelet coefficients were accordingly calculated based on the basis function (e.g., Morlet). The obtained coefficients were subsequently provided to count number of chirps in each song. Sound structure of insect specimens consisted with long chirp and short chirp and the patterns of song were grouped by frequency of long chirp and short chirp. The song patterns of insect specimens were divided by Self-Organizing Map (SOM) that was used number of chirp as input data. Application of computational methods to automatic detection of chirp sound was further discussed for obtaining objective assessment in behavior science.
( Myeong Jun Song ),( Jung Hyun Kwon ),( Soon Woo Nam ),( Tae Hee Lee ),( Young Woo Kang ),( Ji Woong Jang ),( Seok Hyun Kim ),( Byung Seok Lee5 ),( Sea Hwan Lee ),( Hong Soo Kim ),( Ji Hoon Kim ),( S 대한간학회 2017 춘·추계 학술대회 (KASL) Vol.2017 No.1
Aims: We aimed to evaluate the efficacy and safety of Daclatasvir (DAV) and Asunaprevir (ASV) in patients with chronic hepatitis C virus (HCV) and chronic renal failure (CRF). Methods: 22 chronic hemodialysis patients with HCV infection at 12 medical centers have prospectively enrolled from Feb, 2016 to Feb, 2017 (NCT02580474). Of those, 9 patients who were followed 12 weeks after treatment ended were included. We evaluated the virological responses at each week 4, 12, 24 and the 12-week sustained virologic response (SVR12). The tolerability and safety of patients were also evaluated. Results: Of these 20 patients, there had no resistance-associated variant of NS5A (NS5A RAVs) and 2 patients showed indeterminate NS5A RAVs. 12 patients (54.5%) completed the 24 weeks treatment of DAV and ASV. 6 patients (27.2%) have continued, but 4 patients discontinued study prior to 12 weeks. Overall, all patients (n=9) achieved SVR12. Virologic response at week 4, 12 and 24 showed 94.4% (17/18), 93.3% (14/15), and 100% (12/12) respectively. DCV and ASV were well tolerated among the majority of patients and discontinuation of the treatment due to adverse events (hypertension, bradycardia, leukemia) was occurred in 3 patients. In two patients with indeterminate NS5A RAVs, one achieved SVR12 but the other showed viral breakthrough and discontinued treatment. Conclusions: In this study, DAV and ASV combination therapy for chronic hemodialysis patients with HCV infection achieved high sustained virological response with few adverse events. Close monitoring of safety and tolerability may be necessary when treating chronic hepatitis C patients with CRF receiving DCV and ASV.
제20대 대선 유튜브 선거캠페인 댓글연결망 분석 - 삼프로TV를 중심으로
송화영(Hwa-Young Song),이정민(Jung-Min Lee),박한우(Han-Woo Park) 한국콘텐츠학회 2023 한국콘텐츠학회논문지 Vol.23 No.2
이 연구는 제20대 대통령 선거의 소셜 미디어 선거 캠페인에 대한 대중들의 반응을 사회연결망분석을 이용해 살펴보았다. 구체적으로 유튜브 채널 ‘삼프로TV: 경제의 신과 함께’에 게시된 2022년 대통령 선거 후보자 토론 영상과 댓글을 수집하였다. 수집된 데이터를 기반으로 댓글 이용자 연결망 구조를 확인하기 위한 사회연결망분석, 댓글 이용자의 어휘 다양성 파악과 핵심이슈 파악을 위한 의미연결망분석을 수행하였다. 그 결과, 이재명 후보의 연결망이 윤석열 후보에 비해 이용자들 간 밀집도가 더 높았다. 어휘 다양성에 있어서는 윤석열 후보 영상 댓글이 더 다양한 어휘를 구사하는 것으로 나타났다. 이로써 영상 댓글 이용자들 간 ‘관계’에 초점을 두었을 때는 이재명 후보자의 영상이 윤석열 후보에 비해 더 집합적(collective)이었으나, 어휘의 다양성 측면에서 보았을 때는 윤석열 후보가 더 결합적(connective)인 것을 알 수 있다. 핵심 이슈의 경우, 이재명 후보는 후보자 발언에 대한 이용자의 생각이 주로 나타났고, 윤석열 후보는 후보자에 대한 평가나 비판의 내용이 나타났다. 이 연구는 ‘말’보다 ‘행동’에서 비롯된 데이터의 중요성과 약한 유대의 힘 이론이 설명력을 지니고 있음을 시사한다. Using social network analysis, this study investigated people’s responses to Youtube-mediated debate during the 2022 presidential election in Korea. Videos and comments, that were uploaded on the YouTube channel “Sampro TV: With the God of Economy”, were collected using Webometric Analyst 2.0 software. Several network techniques was performed on the obtained data to uncover the structure of the comment user network, and a semantic network analysis was also performed to identify the linguistic diversity of comment users and to identify critical issues. As a result, candidate Lee Jae-Myung’s network had a greater user density than candidate Yoon Suk-Yeol’s network. Yoon Suk-Yeol’s video comments were found to employ more diversified terminology. As a consequence, when focused on the strength of relations between video comment users in a core group, Lee Jae-Myung’s video was more collective and communal than Yoon’s, although Yoon is more connective in terms of vocabulary diversity. In the case of major issues, Lee’s commenters mostly displayed their supporting thoughts on his discussions, whereas Yoon’s commenters displayed the contents of evaluation or critique. The findings of this study is discused from a perspective of the strength of weak ties in social networks.
서울의 Penicillinase Producing Neisseria Gonorrhoeae 발생빈도(1996)
김재홍,황동규,전재홍,김윤석,김중환,김용준,이창균,임동진,김현수,조창근,김경문,박상훈,전우형,김희성,이호정,차명수,김갑형,김형석,김석우,황지환,박병순,권오상,이민수,송기훈,성소영,이인섭,부태성 대한화학요법학회 1999 대한화학요법학회지 Vol.17 No.2
Background : In recent years, gonorrhea has been panedemic and remains one of the most commom STDs in the world, especially in developing countries. Objective & Methods: For the detection of a more effective therapeutic regimen and assessing the prevalence of PPNG, we have been trying to study the patients who have visited the VD Clinic of Choong-Ku Public Health Center in Seoul since 1980 by means of the chromogenic cephalosporin method. Results: In 1996, 139 strains of N. gonorrhoeae were isolated, among which 53(39.0%) were PPNG. Conclusion: Our results suggests that after a peak of 74.3% in 1993, the prevalence of PPNG in Seoul is gradually declining.
Brushless 同期發電機의 特性에 關한 硏究 : 主로 自勵型 Brushless 單相同期發電機의 應用에 對하여
宋鐵,鄭憲相,李愚宣 朝鮮大學校 1977 綜合論文集 Vol.1977 No.-
As an excitation system of the synchronous generator, an exciter which is directly connected to the main shaft, comprising some restrictions by the increasing capacity under the condition of commutation, has generally been used. In order to solve the restriction problem as well as to operate the generator without difficulty, it is desired to get rid of electrical sliding contacts such as brush and slip ring. To eliminate these electrical sliding contacts, several types of brushless generators have been developed, one of which being understood to be the self-excited brushless single-phase synchronous generator. In this paper, the results of experimental test about the characteristics are analyzed. There are not a few possibilities in the CT connection wherein the load current affects the exciting current.
수치해법에 의한 Dolph-Chebyshev배열 안테나의 전류 계산에 관한 연구
송우영,이명호 淸州大學校 1985 論文集 Vol.18 No.2
This paper shows a method for calculating the currents of Dolph-Chebyshev array antennas using the first order simultaneous equations by numerical methods. In order to solve the first order simultaneous equations, Gauss-Jordan Elimination with Scaled Column Pivoting method is used. And we derive the relations between matrix elements and array factor. As a results, this method is a useful method for calculating the currents of Dolph-Chebyshev array antennas.
이우송,오세봉,안용근,문정훈,한성현 한국공작기계학회 2008 한국공작기계학회 추계학술대회논문집 Vol.2008 No.-
This paper propose a new path planning method for mobile robots. The creation method of the course approaches with the method of the frame line graph base where the calculation time becomes disturbance. The graph composition where is not the static course plan method of existing, a course search and repeats continuously changes a graph and proposes the course the dynamic routing plan method. The method which is proposed is composed of a course creation phase and a course improvement phase, each phase includes a graph composition and a course search process.
발전기 고정자 권선용 마이카/에폭시 수지의 표면 및 구조분석
이상교,심재선,정의남,송우창,박하용,심상흥,임윤희,박종국,심낙순 三陟大學校 1998 論文集 Vol.31 No.1
The purpose of this study is to determine the ageing mechanism of Mica/Epoxy composite material for large generator stator windings in order to estimate remaining life of generator. X-ray analysis is performed to investigate the position and structure of mica crystal in insulation materials. The phase change of aged and sound specimen under each atmosphere isn't observed. Surface analysis of insulation materials by optical microscope also show that the sound and aged specimen, sliding phenomenon by shear and thermal stress is observed both interface between mica and epoxy.