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ANTI-PERIODIC SOLUTIONS FOR HIGHER-ORDER NONLINEAR ORDINARY DIFFERENTIAL EQUATIONS
Chen, Tai Yong,Liu, Wen Bin,Zhang, Jian Jun,Zhang, Hui Xing Korean Mathematical Society 2010 대한수학회지 Vol.47 No.3
In this paper, the existence of anti-periodic solutions for higher-order nonlinear ordinary differential equations is studied by using degree theory and some known results are improved to some extent.
ANTI-PERIODIC SOLUTIONS FOR HIGHER-ORDER NONLINEAR ORDINARY DIFFERENTIAL EQUATIONS
Tai Yong Chen,Wen Bin Liu,Jian Jun Zhang,Hui Xing Zhang 대한수학회 2010 대한수학회지 Vol.47 No.3
In this paper, the existence of anti-periodic solutions for higher-order nonlinear ordinary differential equations is studied by using degree theory and some known results are improved to some extent.
Bupivacaine에 의한 지주막하강 마취의 임상적 연구
김용호,김완식,김태성,유희구,이광식,황영희,정춘근,박동호,전세웅 대한마취과학회 1985 Korean Journal of Anesthesiology Vol.18 No.4
Several methods for the management of intractable pain for various conditions including malignant disorders, herpes zoster, and low back pain and/or sciatica in 80 patients were described and analyzed. Neurolytic blodks of celiac plexus were given to the patienta suffering from intra-abdominal pain from malignant origin or chronic pancreatitis. Herpes zoster was treated mainly by chemical sympathectomy via paravertebral route and occassionaly corticosteroid was administered epidurally with the local anesthetic, bupivacaine. All the patients with low back pain and/or sciatica were given epidural corticosteroid one to three times. Other peripheral verve blocks and regional corticosteroid therapy were given to the rest of the patients. Fair to excellent result was obtained in 71% of the patients but the response was poor in the remaining 28% of the patients. It seems that the earlier the patients were referred to the pain clinic, the better the results were.
빅데이터 분석 도구 R 언어를 이용한 비정형 데이터 시각화
남수태(Soo-Tai Nam),진금회(Jinhui Chen),신성윤(Seong-Yoon Shin),진찬용(Chan-Yong Jin) 한국정보통신학회 2021 한국정보통신학회 종합학술대회 논문집 Vol.25 No.1
빅데이터 분석은 데이터 저장소에 저장된 대용량 데이터 속에서 의미 있는 새로운 상관관계, 패턴, 추세를 발견하여 새로운 가치를 창출하는 과정이다. 또한 대부분의 빅데이터 분석 기술 방법들은 기존 통계학과 전산학에서 사용되던 데이터 마이닝, 기계 학습, 자연 언어 처리, 패턴 인식 등이 이에 해당된다. 그리고 빅데이터 분석 도구인 R언어를 이용하여 전-처리된 텍스트 데이터를 이용하여 다양한 시각화 함수를 통해 분석결과를 표현할 수 있다. 본 연구에서 사용된 데이터는 한국정보통신학회 학회지 논문 중에서 2021년 3월호 논문 21편을 대상으로 분석을 하였다. 최종 분석결과는 가장 많이 언급된 키워드는 “데이터”가 305회로 1위를 차지하였다. 따라서 이러한 분석결과를 바탕으로 연구의 한계와 이론적 실무적 시사점을 제시하고자 한다. Big data analysis is the process of discovering meaningful new correlations, patterns, and trends in large volumes of data stored in data stores and creating new value. Thus, most big data analysis technology methods include data mining, machine learning, natural language processing, and pattern recognition used in existing statistical computer science. Also, using the R language, a big data tool, we can express analysis results through various visualization functions using pre-processing text data. The data used in this study was analyzed for 21 papers in the March 2021 among the journals of the Korea Institute of Information and Communication Engineering. In the final analysis results, the most frequently mentioned keyword was “Data”, which ranked first 305 times. Therefore, based on the results of the analysis, the limitations of the study and theoretical implications are suggested.
MULTIPLE PERIODIC SOLUTIONS OF p-LAPLACIAN EQUATION WITH ONE-SIDE NAGUMO CONDITION
Jian Jun Zhang,Wen Bin Liu,Jin Bo Ni,Tai Yong Chen 대한수학회 2008 대한수학회지 Vol.45 No.6
In this paper, the existence and multiplicity of solution of periodic solutions of p-Laplacian boundary value problem are studied by using degree theory and upper and lower solutions method. Some known results are improved. In this paper, the existence and multiplicity of solution of periodic solutions of p-Laplacian boundary value problem are studied by using degree theory and upper and lower solutions method. Some known results are improved.
MULTIPLE PERIODIC SOLUTIONS OF p-LAPLACIAN EQUATION WITH ONE-SIDE NAGUMO CONDITION
Zhang, Jian Jun,Liu, Wen Bin,Ni, Jin Bo,Chen, Tai Yong Korean Mathematical Society 2008 대한수학회지 Vol.45 No.6
In this paper, the existence and multiplicity of solution of periodic solutions of p-Laplacian boundary value problem are studied by using degree theory and upper and lower solutions method. Some known results are improved.