프리스트레스트 콘크리트 橋梁의 解析 및 設計自動化

金亮均,李準熙,崔正鎬,申鉉穆 成均館大學校 科學技術硏究所 1995 論文集 Vol.46 No.2

Computer programs called "PCBRG" and "PCPST' were developed to analyze and design the prestressed concrete bridge. PCBRG is a structural analysis program which can determine the member forces, displacements and adaptable area of tendon by iteration method. PCPST is a post-processor for design. It enables design variables verified and the results of analysis (stress, member force and displacement, etc) are presented in the screen. Also the shear force and bending strength by the deformation compatibility method were checked.

사이클 모사 프로그램을 이용한 대체냉매 냉동공조 시스템의 열역학적 해석

박량한,김영재 한국공업화학회 2004 응용화학 Vol.8 No.2

The system air-conditioner, which has one outdoor unit connecting several indoor unit units, can provide more energy saving and better environmental conditions than the conventional air-conditioning systems. But it is difficult to experimentally analyze behaviors of system air-conditioners due to various load conditions and combinations of indoor units. Therefore, it is important to develop a cycle simulation program for predicting the performance of system air-conditioners without complex experiments. The cycle simulation program for system air-conditioners consists of several subroutines for simulating indoor unit, outdoor unit, compressor, and expansion devices, and for estimating the thermodynamic and transport properties of the refrigerants and moist air. It was programmed with Digital Visual Fortran for the main simulation code and Visual Basic for the graphic user interface.

麥作에 있어서 Isoproturon의 殺草特性과 藥害 및 收量에 미치는 影響

梁瑢承(Ryang, Y. S),金鍾奭(J. S. Kim),韓性洙(S. S. Han),梁桓承(H. S. Ryang) 韓國雜草學會 1982 Weed&Turfgrass Science Vol.2 No.2

전이지대 방언의 변이 양상 고찰 -서남방언과 동남방언의 접경지를 중심으로-

위평량 ( Wi Pyeong-ryang ) 한국방언학회 2021 방언학 Vol.- No.33

본고에서는 서남방언과 동남방언의 접경지에 분포하는 변이형들을 접촉과 변이의 정도를 따라서 3가지 형태로 분류하여 정리하여 보았다. 1) 단어, 음절 단위의 차용과 변이(병렬, 혼효), 2) 음소 단위의 차용과 변이(자음, 모음 차용), 3) 제3유형으로의 변이 가능성을 살펴볼 것이다. 이 중 제3유형의 변이형들은 방언의 접촉과정에서 나타날 수 있는 ‘아래아(ㆍ) 변화의 방향’, ‘자음의 충돌과 변화’ 등에 대한 새로운 시각을 제시해 줄 수 있을 것이다. 그리고 만약 이러한 결과가 접촉의 과정에서 나타나는 변이의 모습으로 타당성을 가질 수 있다면 다른 방언 접경지의 수많은 변이형들을 재조명해 볼 수 있을 것이며, 다양한 환경에서 나타나는 국어의 음운변화 과정도 예측해 볼 수 있지 않을까 생각한다. I tried to find(prove) that any variation, which takes place when one dialect comes in contact with the other, does not take forms randomly but to any extent with direction and rules in Wi Pyeong-ryang(2005). And so I will confirm again that any variation keeps the head of the base of the former word and permits the tail of the other word depending upon the extent(degree) of each other’s influence through the distribution of ‘galkwi’(‘fork’) word forms. However, the causes of any variation are so varied and difficult to predict that any variation is varied and complex. It is difficult to conclude whether this aspect is the result of the contact of two dialects or the area’s particular aspects of the language of the area in question. This work will investigate(study) a lot of variations of the border lines of Jeallado and Gyongsangdo. These areas show the difference of west-southern dialect and east-southern dialect. The types of variation of these areas are 1) borrowing and variation of a word or a syllable 2) borrowing and variation of a phoneme (consonant, vowel borrowing) 3) the possibility of variation to the third type. I don’t jump to a conclusion that the new types, which are assumed to be the variations of the third type, resulted from the contact of the dialects. I will analyze these types based on the viewpoint of contact dialects. I will consider the possibility that we will predict the process of Korean phonologic changes if these changes are from the process of contact. Though this viewpoint is farfetched, I give(show) you(the readers) the chance of scrutinizing the reality of the variation of the contact areas.

Contrasting basin fills in a strike-slip setting, Eumsung Basin(Cretaceous), Korea

Ryang, W.H 한국지질과학협의회 2003 Geosciences Journal Vol.7 No.3

In a strike-slip setting, depositional history of mar-ginal and central basins depends on the basin formation and basi-nal fault movements. The Eumsung Basin contains contrastingbasin fils according to marginal setings. The southeastern part ofthe basin forms sequential development of alluvial/lacustrine sys-tems along transform margin, and the southwestern part consti-tutes synchronous development of alluvial-to-lacustrine systems inpull-apart margin. Along the basin margins and toward the basincenter, both sequential and synchronous developments of the allu-vial and lacustrine systems have filed basinal accommodationspaces created by pull-apart opening. The formative processes ofthe basin were caused by the strike-slip fault movements and theaccompanying changes in drainage network along the basin mar-gin. The overall development patterns of the depositional systemsconform to the sinistral strike-slip fault activation during theEarly Cretaceous.

Antiparasitic Effects of a Herb Extract from Gentiana scabra var buergeri on Trichomonas vaginalis

Ryang, Yong-Suk,Im, Jee-Aee,Kim, Insik,Cho, Yoon-Kyung,Sung, Ho-Joong,Park, Ju-Youn,MIn, Duk-Young,Ha, Ji-Yong 대한의생명과학회 2001 Journal of biomedical laboratory sciences Vol.7 No.2

We studied antitrichomoniasis with the extract of Gentiana scabra var buergeri, which may be effective in treating infectious diseases. The growth inhibition against T. vaginalis became optimal when the extract concentration was 0.7 mg/ml and the cells were seeded at a density of 3×105 per well. After incubation for 12,24,36, and 48 hrs, respectively, the number of cells were each 5×105, 1×105, 1×105, and none, respectively. Under the electron microscope, the experimental group showed that the nucleus, karyosomes, and chromatin were weaker than those in the control group. After incubating for 3 hrs, the cells were destroyed completely, and only a remnant remained. The hydrogenosomes disappeared almost. The vacuoles and autophagic vacuoles increased. The cells became regressive from.

Research on Modern Sino-Korean Words, by Myung-hee NOH (Paju: Thaehaksa, 2005) - Spectrum of Sino-Korean Words: From Words to Affixes -

Ryang-jin KIM 세계한자학회 2023 世界漢字硏究 Vol.6 No.1

A METHOD USING PARAMETRIC APPROACH WITH QUASINEWTON METHOD FOR CONSTRAINED OPTIMIZATION

Ryang, Yong-Joon,Kim, Won-Serk Korean Mathematical Society 1989 대한수학회보 Vol.26 No.2

This paper proposes a deformation method for solving practical nonlinear programming problems. Utilizing the nonlinear parametric programming technique with Quasi-Newton method [6,7], the method solves the problem by imbedding it into a suitable one-parameter family of problems. The approach discussed in this paper was originally developed with the aim of solving a system of structural optimization problems with frequently appears in various kind of engineering design. It is assumed that we have to solve more than one structural problem of the same type. It an optimal solution of one of these problems is available, then the optimal solutions of thel other problems can be easily obtained by using this known problem and its optimal solution as the initial problem of our parametric method. The method of nonlinear programming does not generally converge to the optimal solution from an arbitrary starting point if the initial estimate is not sufficiently close to the solution. On the other hand, the deformation method described in this paper is advantageous in that it is likely to obtain the optimal solution every if the initial point is not necessarily in a small neighborhood of the solution. the Jacobian matrix of the iteration formula has the special structural features [2, 3]. Sectioon 2 describes nonlinear parametric programming problem imbeded into a one-parameter family of problems. In Section 3 the iteration formulas for one-parameter are developed. Section 4 discusses parametric approach for Quasi-Newton method and gives algorithm for finding the optimal solution.

A Numerical Study on Coal Devolatilization of Bituminous Coal Using CPD Model

Ryang Gyoon Kim(김량균),Byoung Hwa Lee(이병화),Chung Hwan Jeon(전창환),Young June Chang(장용준),Ju Hun Song(송주헌) 대한기계학회 2008 대한기계학회 춘추학술대회 Vol.2008 No.11

The coal considerably is the energy resource which is important with the new remarking energy resource. The coal conversion has two processes which are coal devolatilization and char oxidation. Coal devolatilization is important because it describes up to 70% weight loss and has been shown that nitrogen contribute 60 to 80% of the total NOx produced. The chemical percolation devolatilization(CPD) model is used here to describe coal devolatilization. The model was developed to describe coal devolatilization behavior of rapidly heated coal based on characteristics of the chemical structure of the parent coal. This paper describes CPD model in detail and makes an analysis of Shenhua coal(bituminous) which is used calculated 13-C NMR(carbon - nuclear magnetic resonance).

Establishing the Factorial Validity of the Mathematics Teaching Efficacy Scale: Confirmatory Factor Analysis

( Ryang Dohyoung ) 한국수학교육학회 2014 수학교육 학술지 Vol.2014 No.1

This study develops the Mathematics Teaching Efficacy Scale (MTES) measuring efficacy beliefs of Korean preservice teachers seeking the secondary mathematics teaching certificate. This study focuses on establishing the factorial validity of the MTES based on Bandura`s two-dimension theory. The 2-factor structure of the MTES was explored on the first data set, andthen the structure was confirmed on the second subset.TheMTES consists of 18 items: 12items of the personal efficacy and the sixitems of theoutcome expectancy.