Characterization of cricket song patterns and the behavior observation of Teleogryllus emma (Orthoptera:Grylloidea)

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.

The Safety and Efficacy of Daclatasvir and Asunaprevir with Chronic HCV Genotype 1 Infection and Hemodialysis

( 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.

전국 10개 종합병원 중환자실 환자의 직장내 Vancomycin-resistant Enterococci(VRE) 보균율, 보균의 위험요인 및 유전적 다양성 조사

정희진,송준영,엄중식,김우주,최선주,최정현,이혁,정문현,이광미,신동현,손보라,최종성,우흥정,권정아,이경원,최강원,박승철 대한감염학회 2002 감염 Vol.34 No.5

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.

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.

글루코오스의 분해반응에 미치는 금속이온의 영향

이민규,이송우,허목,송승구 濟州大學校 工科大學 産業技術硏究所 1991 産業技術硏究報告 Vol.2 No.-

The objective of this research was to study the chemical kinetics of the decompo-sition of glucose in the presence of acid catalyst and metal ion. In this experiment. the range of variables investigated was covered temperature from 160℃ to 180℃ and concentration of 4% to 11% (W/V) sulfuric acid and metal sulfate concentrations, 1.0×10^(-3) to 2.5×10^(-2) gmol/l. It is shown that glucose disappearance follows a first-order reaction mechanism and the glucose decomposition reaction is dependent on both the reaction temperature and the catalyst concentration. And the presence of chromic ion accelerates the decompo-sition reaction of glucose, but presence of ferric and nickel ion rarely influence the reaction.

지문과 정신분열증

우숙희,정국동,최송표,조근자,양은진,김수일,박경란,이영호,김원식 충남대학교 의과대학 지역사회의학연구소 1998 충남의대잡지 Vol.25 No.1

Fingerprint patterns of 333 schizophreniacs who met with the diagnostic criterias of International Pilot Study of Schizophrenia except items associated with chronicity in exclusion criteria were studied, and the following results were obtained. 1. The frequency distribution of the fingerprint patterns in the 333 schizophreniacs was ulnar loop, whorl, twinned loop, arch, radial loop in order in both control and schizophrenia groups. 2. Finger ridge counts of both sexes were decreased significantly in schizophrenia group. 3. Dissociation of fingerprint pattern in the schizophrenia group was 51.1%, which was far greater than 6.25% of control group. Number of dissociation was greatest in the thumb, followed by index, middle, ring, and little finger in order. According to the above results, it is considered that both the number of finger ridges and degree of dissociation of fingerprint patterns were closely related with schizophrenia. Analysis of fingerprints and palmprints with the aid of chromosomal analysis would contribute the early diagnosis and prevention of schizophrenia.

열처리에 따른 Cd₁-xZnxS/In 박막의 광학적 및 전기적 특성 분석

송우창,이경호,심상흥,이상교,심재선,박종국 三陟大學校 2002 論文集 Vol.35 No.-

In this thesis, effects of the thickness of indium films and the annealing temperature on optical and electrical properties of chemically deposited CdZnS films for the efficiency of the Cd1-xZnxS/CdTesolar cells were investigated. To improve the electrical conductivity of Cd1-xZnxs films, thin indium films(10-4Onm thickness)were evaporated on the suface of Cd1-rZnxs films. Experimental parameters such as indium film thickness, Zn mole fraction, and the annealing temperature in terms of structural and electrical properties of Cd1-xZnxs films were investigated. The diffusion process was carried out by heating the sample in air at 150-550℃ for 20 minute As the indium film thickness is increased, the resistivity decreases and the lowest value(0.3 O -cm)is obtained for Cd1-xZnxs films annealed at 450℃ with 40nm of the thickness.

혐기화 시간에 따른 활성슬러지의 물리·화학적 특성변화

이창한,나영수,김도한,이송우,송승구 한국환경과학회 2002 한국환경과학회지 Vol.11 No.4

Physico-chemical properties of the activated sludges(Suyoung and Changlim treatment plant). such as SVI(sludge volume index), absorbance, specific surface area, and specific resistance using Buchener funnel test were investigated with changing anaerobic storage time. This experimental condition was found that it was possible to estimate a linear relationship between their parameters such as specific area, specific resistance, and sludge volume index(SVI). The specific surface area and the specific resistance to filtration of the activated sludges of Suyoung and Changlim treatment plant were found as 123.6~136.6㎡/gDS and 41.5 ~ 44.9㎡/gDS(dry solid), and 1.09×10^14 ~ 5.48×10^14m/㎏, respectively. The results gave a good linear relationship between the specific surface area and the specific resistance. r=2.25×10^12s-8.10×10^13(R^2=0.8885) at Suyoung treatment plant and r=1.26×10^13s-4.75×10^14(R^2=0.8756) at Canglim treatment plact.