• Korean Journal of Mathematics
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• 제30권3호
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• pp.467-474
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• 2022

In this article, we consider the integral operator 𝓒^b,c, which is defined as follows: $${\mathcal{C}}^{b,c}(f)(z)={\displaystyle\smashmargin{2}{\int\nolimits_{0}}^z}{\frac{f(w)*F(1,1;c;w)}{w(1-w)^{b+1-c}}}dw,$$ where * denotes the Hadamard/ convolution product of power series, F(a, b; c; z) is the classical hypergeometric function with b, c > 0, b + 1 > c and f(0) = 0. We investigate the boundedness of the 𝓒^b,c operators on Bloch spaces.

• 대한심미치과학회지
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• 제30권2호
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• pp.44-52
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• 2021

본 기고를 통해, provisional restoration 의 정보를 final restoration 에 정확하게 전달하기 위한 방법중의 하나인 Cross mounting 의 개념과 자세한 방법, 그리고 임상 팁에 대해서 소개하고자 한다.

• Korean Journal of Mathematics
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• 제30권1호
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• pp.131-146
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• 2022

This is an expository article about the gradients in deep neural network. It is hard to find a place where gradients in a deep neural network are dealt in details in a systematic and mathematical way. We review and compute the gradients and Jacobians to derive formulas for gradients which appear in the backpropagation and implement them in vectorized forms in Python.

• 한국수학교육학회지시리즈B:순수및응용수학
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• 제30권3호
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• pp.249-267
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• 2023

This manuscript is divided into three segments. In the first segment, we prove a unique common fixed point theorem satisfying generalized weak contraction on partially ordered metric spaces and also give an example to support our results presented here. In the second segment of the article, some common coupled fixed point results are derived from our main results. In the last segment, we investigate the solution of integral equation as an application. Our results generalize, extend and improve several well-known results of the existing literature.

• Korean Journal of Mathematics
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• 제30권1호
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• pp.73-80
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• 2022

In this article, we represent and examine a new subclass of holomorphic and bi-univalent functions defined in the open unit disk 𝖀, which is associated with the Dziok-Srivastava operator. Additionally, we get upper bound estimates on the Taylor-Maclaurin coefficients |a₂| and |a₃| of functions in the new class and improve some recent studies.

• 정보관리학회지
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• 제31권3호
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• pp.249-270
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• 2014

전체 학술지 논문 가운데 오픈액세스(Open Access, OA)가 차지하는 비중은 현재 20%-30%에 이르고 있고, 최근에는 출판 즉시 오픈액세스가 가능한 골드 OA에 대한 관심이 높다. 이 연구는 골드 OA를 출판하기 위한 선결 조건인 '논문 처리 수수료(Article Processing Charges, APC)' 지원에 관한 것으로 연구후원기관과 저자의 재직대학에서 어떠한 정책을 수립하여 실천하고 있는지를 알아보았다. 영국을 비롯한 유럽에서는 수년 동안 연구후원기관의 APC 부담에 관한 타당성 검토와 시범사업을 진행하여 왔고, 현재 본격적으로 시행하고 있는 단계이다. 미국을 비롯한 북미에서는 주요 대학도서관을 중심으로 OA 펀드를 조성하여 APC를 지원하고 있다. 반면에 한국은 연구후원기관과 대학에서 논문의 그린 OA를 추진할 뿐, APC를 지원하여 골드 OA를 출판하는 단계에 이르지 못하고 있다. 주제 분야에 따라 다르지만 국제 학술지에 논문을 출판하는 국내 연구자도 적지 않아 이들의 논문이 골드 OA로 출판된다면 국제적인 파급력은 크게 증진될 전망이다. 이에 국내 연구후원기관과 대학도 골드 OA에 관심을 갖고 OA 전문 학술지와 하이브리드 학술지에서 요구하는 APC를 지원하는 방향으로 정책의 기본 틀을 세우려는 노력을 경주해야 할 것으로 보인다.

• 한국의사학회지
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• 제30권2호
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• pp.33-44
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• 2017

Introduction to Medicine (Euihak-Ipmun), written by Lee Chun of the Ming Dynasty, is a comprehensive medical book brought to Joseon in the 1600s. It directly influenced many medical books written in the Joseon Dynasty of the same period, and became a major citation document of Dongui-Bogam. Introduction to Medicine became a major text for medical education in 1834 and has since been used as a clinical primer of Korean medicine. This article first examines the Joseon's era published version of Introduction to Medicine using documentation of the Diary of the Royal Secretariat (Seungjeongwon Ilgi), and a woodblock list. Based on these investigations, the reviewer examined the existing versions of the book, and focused on various characteristics for comparison. This article reveals facts which include : 1) All editions of Introduction to Medicine published at the present office are published by Jeolla-do provincial office (Jeolla-Gamyeong). 2) The first edition was published before 1636. 3) A finely produced version (Jeongganbon) was published around 1760. 4) The Jeongrijache-iron type publication was published around 1801.

• 한국의류학회지
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• 제1권1호
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• pp.15-23
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• 1977

This article is to study Dopo, man's traditional robe, which was worn by courtiers and scholars in Yi dynasty (AD 1392-1910). This article deals with its history and transition according to relative documents available, and presents its construction method with reference to relics. It is recorded that Dopo was first worn about the middle of the time of Yi dynasty. Dopo, however, seems to have its origin in the robe of Koguryo dynasty (BC 37-AD 668). Dopo was an ordinary robe to court officials, whereas Confucian scholars wore it as an official uniform or a ritual robe. ft was a long over-coat with V-neck line, and, round and wide sleeves. Dopo was so long that its edge reached wearer's ankels. One of the widest sleeves of relics was 58cm in size. Another unique characteristics Dopo had, were that its back cloth splited in two on center line, which was fully covered and added with-another cloth called 'Jeonsam'. Accordingly, a cloth-30cm in width and 30 yards in length-was needed to make Dopo. Since the reform of 1894 it was prohibited to wear, and then was replaced with Durumagi, a strait collar and narrow-sleeved robe.

• Computers and Concrete
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• 제30권3호
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• pp.225-236
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• 2022

In this article, Multi-Gene Genetic Programming (MGGP) is proposed for the estimation of the compressive strength of concrete. MGGP is known to be a powerful algorithm able to find a relationship between certain input space features and a desired output vector. With respect to most conventional machine learning algorithms, which are often used as "black boxes" that do not provide a mathematical formulation of the output-input relationship, MGGP is able to identify a closed-form formula for the input-output relationship. In the study presented in this article, MGPP was used to predict the compressive strength of plain concrete, concrete with fly ash, and concrete with furnace slag. A formula was extracted for each mixture and the performance and the accuracy of the predictions were compared to the results of Artificial Neural Network (ANN) and Extreme Learning Machine (ELM) algorithms, which are conventional and well-established machine learning techniques. The results of the study showed that MGGP can achieve a desirable performance, as the coefficients of determination for plain concrete, concrete with ash, and concrete with slag from the testing phase were equal to 0.928, 0.906, 0.890, respectively. In addition, it was found that MGGP outperforms ELM in all cases and its' accuracy is slightly less than ANN's accuracy. However, MGGP models are practical and easy-to-use since they extract closed-form formulas that may be implemented and used for the prediction of compressive strength.

• 정보화정책
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• 제30권2호
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• pp.3-21
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• 2023

최근 인터넷 환경은 인터넷 내용규제에 대한 새로운 접근을 요구한다. 헌법재판소가 인터넷을 가장 참여적인 시장으로 표현촉진적인 매체라고 정의한 지 20여년이 흘렀다. 그 동안 인터넷에서는 디지털성범죄, 마약, 자살정보, 악성댓글, 혐오표현, 가짜뉴스 등 표현의 자유로만 설명할 수 없는 다양한 문제들이 등장했다. 통신심의 제도에 대한 논의가 중요한 이유이다. 본고는 국내 통신심의 제도에 대한 입법적 분석, 사법적 분석, 행정적 분석을 시도한다. 통신심의 법률 현황과 특징은 무엇인지, 통신심의에 대한 사법부의 판단은 어떠한지, 실제 통신심의의 운영과정과 특징은 무엇인지 분석하였다. 입법적, 사법적, 행정적 접근을 통해 국내 통신심의 제도의 문제점을 총체적으로 다루었다. 이를 통해 국내 통신심의 제도 개선을 위한 정책적 제언을 도출하였다.