• 제목/요약/키워드: Computer Studies

Search Result 4,571, Processing Time 0.031 seconds

Analytical Study of the Machine Dynamics of the Amplidyne Under the Demagnetization Effect (계산기에 의한 회전형전자증폭기의 동특성 및 감자작용 영향에 관한 해석적 연구)

  • Se Hoon Chang
    • 전기의세계
    • /
    • v.22 no.1
    • /
    • pp.9-19
    • /
    • 1973
  • This paper is for the supplementary studies of the theoretical treaties on the machine dynamics of the amplidyne generator under the influencies of the armature reaction. The author has already shown the time-domain expression of the dynamic relations of the machine with balanced control winding, under this operating condition. In this paper, analytical and experimental studies of a test machine are intended to supplement the theories derived in the previous work, entitled "On the dynamics and the demagnetization effect of the amplidyne generator with auxiliary feedback compensating winding". FACOM 230 digital computer is incorporated for processing of a series of experimental data. The machine dynamics are then numerically analyzed with the aid of the computer. The virtual machine responses to stepwise inputs are compared with the computer output to confirm the influence of the armature reaction effect on to the machine dynamics. dynamics.

  • PDF

A Study on the Fashion Illustration by Using CAD System (CAD System을 이용한 Fashion Illustration 연구)

  • Lee, Woon-Young;Im, Soon
    • The Research Journal of the Costume Culture
    • /
    • v.6 no.1
    • /
    • pp.25-34
    • /
    • 1998
  • The researches on modern fashion design have more specific and multifactorial, and expressional approaches of designers become more deeverse too. And, at the present point time when the design itself extends actively throughout the world, there should be may studies that focus on the development of CAD system. This study research that computer adied design used in developing various design and variety training. Development of fashion design by using computers could contribute to the rapid composition of deverse researches on it. It is to be classified into three items, diagram, illustration, transformation in computer adied fashion design. The illustration could be color variation by using CAD system, and express correct form, adjustment, complement. It must be development as an expression of propaganda, having a artistic value of ganre. At the present point of time when the fashion design itself it needed development, there should be may studies that focus on development of fashion design by using computer. This study present diagram for practical side, and illustration for decorative side by using CAD system.

  • PDF

Studies on the Computerization of Design of Experiments(II) (실험계획법의 전산화에 관한 연구(II))

  • Jeong, Su-Il
    • Journal of Korean Society for Quality Management
    • /
    • v.19 no.1
    • /
    • pp.163-169
    • /
    • 1991
  • This paper studies computer programming for Two-Way Layout with Multiple Observations - Fixed Model using the subroutines of the former paper. The following items are considered in the PC computer programming: * significant digits in the computation of Sum of Squares * containing the necessary F-distribution values in the program * including the necessary estimation after the Analysis of Variance * following the rules of KS A 0021 in rounding off digits etc. The running results of Analysis of Variation Table and Estimations of a fictitious example is added with the parts of PC program. It should be mentioned that the main purpose of this paper is in the arousing of the discussion about significant digits concept in the PC computer programming for various kinds of Statistical Methods.

  • PDF

Curltural Tourism Contents Service Framework For Tour Guide Services (관광종합안내를 위한 문화관광 콘텐츠 서비스 프레임워크)

  • Lee, Kwang-Jo;Song, Jin-Woo;Han, Jung-Suk;Yang, Song-Bong;Kim, Hoo-Sung
    • Proceedings of the Korean Information Science Society Conference
    • /
    • 2007.10d
    • /
    • pp.422-426
    • /
    • 2007
  • 문화관광 콘텐츠는 이미 많이 개발되어 있으나 이를 적절히 활용하기 위한 방안은 그리 많지 않은 실정이다. 또한 정보가 특정 위치나 웹상에 머물러 있기 때문에 이용자가 관광정보를 검색하는 것도 쉬운 일이 아니다. 본 논문에서는 관광객이 쉽게 이용할 수 있고 사용자에 특화된 정보를 제공하는 문화관광 콘텐츠 서비스 프레임워크를 제안한다.

  • PDF

Teacher's Viewpoints on the Desirability of Computers In the Early Childhood Classroom: A Qualitative Study (유아컴퓨터 교육환경 조성에 관한 교사의 욕구 탐색 ; 질적 접근)

  • Sim, Hyeon Ae;Lee, So Hee
    • Korean Journal of Child Studies
    • /
    • v.18 no.1
    • /
    • pp.177-198
    • /
    • 1997
  • This study investigated the viewpoint of teachers on the desirability of computer education in the early childhood classroom. The subjects were 8 kindergarten teachers in Seoul and Kyong'gi Province who used computers in the classroom. Nondirective and open-ended interview methods were used for data collection. Five steps or stages of viewpoints were found: step1-teachers want to have computers in the classroom but have no particular purpose in mind; Step 2-teachers want the children to play with the computers as if it were a toy; Step 3-teachers want to use any programs that are in the computer; Step 4-teachers want to use the computer more purposefully for educational goals; Step 5-teachers want to unify the early childhood curriculum through the multi-media system.

  • PDF

Semi-resolution Practicability of Three-Dimensional Statics of Cables from Computer Programs

  • Dodaran, Asgar Ahadpour;Park, SangKil
    • Journal of Ocean Engineering and Technology
    • /
    • v.26 no.6
    • /
    • pp.1-6
    • /
    • 2012
  • The purpose of this paper is to present a rational method for analyzing, designing, or evaluating the spread mooring systems used with floating drilling units. This paper presents a validated model to calculate the catenary static configuration. A semi-resolution approach is presented in this paper that is capable of predicting the static performance of a caisson mooring system. The solution is derived as a function of only three parameters, which can be solved numerically by implementing different kinds of boundary conditions. The efficiency and accuracy of the method permit quick parametric studies for the optimal selection of the system particle, which is undoubtedly useful for a preliminary design. A number of numerical examples demonstrate the validity of the adopted approach. The paper contains a complete description of the test cases and reports the results in such a way that it can provide a "benchmark" test for users and programmers of computer codes for flexible riser analysis.

Studies on the Computerization of Design of Experiments (III) (실험계획법의 전산화에 관한 연구 (III))

  • 정수일
    • Journal of Korean Society of Industrial and Systems Engineering
    • /
    • v.16 no.28
    • /
    • pp.103-107
    • /
    • 1993
  • This paper studies computer programming for the analysis of data obtained by experiments using Orthogonal Arrays. The following items are considered in the computer programming : * significant digits in the computation of Sum of Squares, Mean Squares and Variance Ratios * containing the necessary F-distribution values in the program. * matching the rules of KS A 0021 and 3251 in the digit treatments etc. The running results of ANOVA Table and Pooled ANOVA Table of a fictitious example is added with the parts of a program. It should be mentioned that the main purpose of this paper is in the arousing of the discussion about significant digits concept in the computer programming for various kinds of Statistical Methods.

  • PDF

Design and Implementation of Phonetic System for Sasang Constitution (사상 의학을 위한 음성 분석 시스템 설계 및 구현)

  • Heo Byung-Do;Sohn Ki-Rak;Jeon Jong-won
    • Proceedings of the Korea Information Processing Society Conference
    • /
    • 2004.11a
    • /
    • pp.879-882
    • /
    • 2004
  • 우리나라에는 의사학에서 그 유래를 찾아보기 어려운 독특한 체질의학이론인 '사상의학'이 있다. 이 이론을 제시한 학자는 이조말엽의 함경도 지방의 이제마라는 의학자에 의하여 창안된 이론이다. 본 논문의 연구는 음성을 이용하여 음성이 담고 있는 언어적 특징이나 음성요소들을 이용하여 사상 의학과의 연관성을 찾는데 목적을 두고 시작되었으며, 기존의 음성분석기의 요소들과 본 연구에서 개발된 요소를 병합하여 음성분석 모듈을 완성하였다.

  • PDF

Introducing Contemporary Blockchain Platforms

  • Alrumaih, Malak Suliman
    • International Journal of Computer Science & Network Security
    • /
    • v.21 no.4
    • /
    • pp.9-18
    • /
    • 2021
  • Blockchain and its infrastructure technology have expanded rapidly in the last decade and are in high demand, but there is a lack of comprehensive studies on those platforms. Blockchain is a new technology based on the distributed digital ledger system. Decentralized trust is one of the key factors behind the blockchain-based system. Transparency of such a system is better than a conventional centralized ledger system. By using a blockchain-based transaction system, any business organization can harness key benefits like data integrity, confidentiality, and anonymity without involving any third party in control of the transactions. Since the blockchain is used in numerous applications and the horizon is expanding at an unprecedented pace. So, there is a need for an introducing and reviewing of blockchain platforms. In this paper, we have reported a review on existing contemporary blockchain platforms. In particular, From the existing studies, we have identified eighty blockchain platforms and the majority of them have a lack of technical details. To provide the researchers a comprehensive introducing on blockchain platforms to perform a broad guideline for future research and investment in the blockchain domain.

Fuzzy Partitioning of Photovoltaic Solar Power Patterns

  • Munshi, Amr
    • International Journal of Computer Science & Network Security
    • /
    • v.22 no.5
    • /
    • pp.5-10
    • /
    • 2022
  • Photovoltaic systems provide a reliable green energy solution. The sustainability and low-maintenance of Photovoltaic systems motivate the integration of Photovoltaic systems into the electrical grid and further contribute to a greener environment, as the system does not cause any pollution or emissions. Developing methodologies based on machine learning techniques to assist in reducing the burden of studies related to integrating Photovoltaic systems into the electric grid are of interest. This research aims to develop a methodology based on a unsupervised machine learning algorithm that can reduce the burden of extensive studies and simulations related to the integration of Photovoltaic systems into the electrical grid.