• Title/Summary/Keyword: 산학서(算學書)

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Machine-printed Numeral Recognition using Weighted Template Matching (가중 원형 정합을 이용한 인쇄체 숫자 인식)

  • Jung, Min-Chul
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.10 no.3
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    • pp.554-559
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    • 2009
  • This paper proposes a new method of weighted template matching fur machine-printed numeral recognition. The proposed weighted template matching, which emphasizes the feature of a pattern using adaptive Hamming distance on local feature areas, improves the recognition rate while template matching processes an input image as one global feature. The experiment compares confusion matrices of the template matching, error back propagation neural network classifier, and the proposed weighted template matching respectively. The result shows that the proposed method improves fairly the recognition rate of the machine-printed numerals.

Conflict and Team Commitment: Mediating Role of Team Efficacy and Communication Satisfaction (팀 내 갈등이 팀몰입에 미치는 영향: 팀효능감과 커뮤니케이션 만족도의 매개효과를 중심으로)

  • Lee, Mok-Hwa;Han, Joon-Goo
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.15 no.5
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    • pp.2831-2843
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    • 2014
  • As team based organizational structure is commonly spreading, many employees perform as a team member. This situation increases not only team commitment but also conflict to team members. But there are not many researches about the relationship between conflict and team commitment. This research proves the mediation effect of team efficacy and communication satisfaction when conflict have effect on team commitment. We have the following results. First, task conflict and relationship conflict have negative effect on team commitment. Second, team efficacy mediates task conflict and team commitment. Third, communication satisfaction mediates relationship conflict and team commitment.

A Study on Maximum and mean velocity Relationships in laboratory flumes with Varied Channel Slopes (수로경사가 변화하는 실험실수로에서의 최대유속과 평균유속과의 관계에 관한 연구)

  • Choo, Tai-Ho;Ok, Chi-Youl;Lee, Seoung-Kwan;Je, Sung-Jin
    • Proceedings of the KAIS Fall Conference
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    • 2007.11a
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    • pp.116-119
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    • 2007
  • 정확하고 신뢰성 높은 유량 자료는 수자원의 정량적인 계획과 관리에 필수적이다. 이를 위하여 Chiu는 기존의 결정론적인 흐름 방향 유속분포식의 한계를 극복할 수 있는 방법으로 확률통계에서 사용되는 엔트로피 개념을 이용한 3차원 유속분포 식을 제안하였고, 이를 실험실 테이터와 자연하천에 적용하여 신뢰성과 정확성을 지속적으로 증명하여, 마침내 이에 대한 활용성이 매우 크게 대두되어 Chiu의 유속공식을 적극적으로 사용하고 있는 실정이다. 그러나 지금까지 이론적인 유속 분포식을 검증하기위하여 단면 형상이 일정한 직사각형이나 사다리꼴 등의 실험수로에서부터 불규칙한 단면 형상을 갖는 자연 하천에 대한 적용을 거의 이루고 있는 실정이나, 하상경사가 변하는 경우에도 엔트로피 파라미터(M)가 이에 대응하여 평형상태에 도달하려고 하는지에 대한 연구는 전무하다. 본 연구에서는 하상경사를 임의로 변경 가능한 실험수로를 선택하여 정밀법에 의한 유속측정을 실시하였다. 같은 지점의 같은 단면에서 하상경사($\theta$)가 0.00069부터 0.019034까지 28번의 경사변화를 주고 각 경사마다 유량을 측정하여 28개의 유량측정 데이타를, Chiu의 엔트로피 유속공식에 적용하여, 평균유속과 최대유속 사이의 관계가 선형관계, 즉 하상경사가 변하는 경우에도 엔트로피 파라미터(M)가 이에 대응하여 평형상태에 도달함을 증명하였다.

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Design and Analysis of the Swaging Manufacturing Process Using CAE (CAE에 의한 스웨이징(swaging) 제조 공정의 설계 및 해석)

  • Echempati Raghu;Huh Yong-Jeong
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.5 no.5
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    • pp.442-446
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    • 2004
  • Computer simulation of a swaging manufacturing process is presented in this paper. Commercially available software has been used to develop the simulation algorithm. Based on the experience gained from trial runs, simulation of a tube swaging process has been carried out. The material parameters "n" (strain hardening exponent) and "K" (plastic modulus) are obtained from actual tensile test measurements of the tube material. Two different geometries for the die and the tube have been used in this work and a comparison made. Numerical simulation of the swaging process has been performed using the commercially available HyperMesh(r) for pre-processing, LS-DYNA(r) for analysis and LS-TAURUS(r) for post-processing. Some of the results obtained from this study are compared with those available in the literature.

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A Comparative Study on the Spatial Layout Characteristics of Modern Apartment Floor Plan and 'Standard Korea Traditional-Houses Floor Plan' (현대 아파트 평면도와 한옥표준평면도의 공간배치 특성 비교 연구)

  • Hwang, Yong-Woon
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.20 no.8
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    • pp.271-278
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    • 2019
  • This study compares the space depth and layout of a modern apartment floor plan (MAFP) and the standard floor plan of traditional Korean houses (STKHs), which has preserved the traditional beauty of Korea. Space Syntax was applied to compare the MAFP and STKH. The space within MAFP was more divided into many spaces than the STKH. In both types of floor plans, the living room space had the highest degree of integration and was used for central functions in the each floor plan. The STKH and the space in the MAFP have more segregated space than integrated space. In the STKH, the master bedroom and other rooms were found to be segregated space. However, the master bedroom of the MAFP was highly integrated space. The function of the thet maru has been greatly reduced in the STKH, and the numaru was classified as a highly segregated space. The evacuation space was the most segregated space in the MAFP. The STKH has been adapted and changed according to the trends of the times, and the MAFP reflects our traditional living habits.

Redesign Application Architecture for Advanced Volcanic Disaster Response System (화산재해대응시스템 고도화를 위한 응용아키텍처 재설계)

  • Youn, Junhee;Kim, Tae-Hoon;Kim, Dusik
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.19 no.3
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    • pp.90-95
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    • 2018
  • The Korean Peninsula is no longer safe from volcanic disasters. Therefore, the Korean government has been developing a spatial information-based system implementation technology since 2014. VDRS (Volcanic Disaster Response System), which is the result of the technology, was implemented in 2016 as Phase I. Since then, phase II implementation technology has been developed for an advanced system reflecting the user's requirements. To advance the system, redesign architecture is essential. This paper examined the redesign application architecture for an advanced VDRS. First, existing application architecture, which was implemented in phase I, was analyzed. Second, the user's requirements for advanced VDRS were analyzed. The analyzed user's requirements were categorized as a transforming service oriented to a business-oriented architecture, improving accuracy, and expanding the spatial range and target disaster. Third, application architecture was redesigned based on gap analysis between the existing architecture and user's requirements. The results of the proposed redesign architecture are presented as the application system structure and description of the application function based on owner's point of view in the enterprise architecture. The results of this paper can be used to derive the application module design and provide a detailed description of the application module based on the designer's point of view. Further research focused on structuring the HW/SW architecture will be required for system implementation.

Comparison and Analysis of Name-Based Routing Protocols for Information-Centric Network (정보 중심 네트워크를 위한 이름 기반 라우팅 프로토콜의 비교 및 분석)

  • Kim, Jung-Jae;Ryu, Min-Woo;Cha, Si-Ho;Cho, Kuk-Huyn
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.14 no.4
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    • pp.1969-1975
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    • 2013
  • ICN (Information-Centric Network) is a next generation Internet communication technology for converting existing Internet communication paradigm to information-based communication paradigm to efficiently use a large amount of information that exists on the Internet. Therefore, unlike existing Internet communication technologies focused on the process of communication using the host address, ICN focuses on the purpose of communication for each information by defining the information of everything that exists on the Internet. For this purpose, ICN uses NbR (Name-based Routing) methods that assign a name to each piece of information, all routers participating in ICN have the physical storage so that they are able to share information with each other. NbR methods on ICN are divided into one-phase routing and two-phase routing depending on how to reach at the storage of each router. However, currently proposed NbR methods cause many problems because they do not reflect the unique characteristics of ICN. Therefore, this paper looked at various NbR issues from caching, access time, distribution, mobility, scaliability, and dissemination of information for an efficient NbR method, and analyzed existing methods proposed for ICN. This paper also proposed a research direction to study the efficient NbR for ICN based on the analysis information.

The Effects of Hospice & Palliative Care Education Program on Spiritual Well-Being and Knowledge Regarding Advance Directives of Nursing Students (호스피스·완화의료 교육프로그램이 간호대학생의 영적안녕감 및 사전의료의향서 지식에 미치는 효과)

  • Kim, In Sook;Jang, Sun Hee
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.21 no.1
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    • pp.732-738
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    • 2020
  • This study examined the effects of hospice & palliative care education programs for nursing students, in terms of spiritual well-being and knowledge concerning advance directives. This is a quasi-experimental study of non-equivalent control groups, and includes a pre-test and post-test design. Data was collected between September to December 2018, enrolling third grade nursing college students attending a university in C city: 22 subjects in the experimental group and 27 subjects in the control group. The experimental group was provided the education as a regular subject, 2 hours a week for 7 weeks, for a total of 14 hours. Ed. Notes: I suggest you maintain any one unit for mentioning time. Hence, I changed 120 mins to 2 hours. Data were analyzed by X2 test, Fisher's exact, t-test, independent t-test, and paired t-test, using the SPSS 21.0 program. After attending the program, spiritual well-being showed a significant increase (t=2.80, p=0.009). However, there was no significant difference between groups in knowledge regarding advance directives (t=1.33, p=0.190). Our results indicate that the hospice & palliative care education program helps nursing students improve their score of spiritual well-being. We believe that these results contribute basic data for the future development of hospice-palliative care curriculum.

Hormone Analysis during Artificial Estrus Induction in Korean Black Goats (흑염소의 인공수정 발정동기화 처리방법에 따른 호르몬 변화분석)

  • Kim, Kwan-Woo;Jeon, Dayeon;Lee, Jinwook;Kim, Seungchang;Lee, Sang-Hoon
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.20 no.8
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    • pp.224-230
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    • 2019
  • The purpose of the study is to investigate the change in the blood progesterone (P4) and estrogen (E2) levels when applying different estrus induction protocols to Korean black goats, and this was done to gain understanding about their reproduction physiology. For the experiment, we performed three estrus induction protocols that are commonly used in bovine: controlled internal drug release (CIDR) + prostaglandin $F2{\alpha}$ ($PGF2{\alpha}$), $PGF2{\alpha}$ + gonadotropin-releasing hormone (GnRH) + $PGF2{\alpha}$, and CIDR + $PGF2{\alpha}$ + PMSG. The P4 and E2 concentrations showed different patterns until the last treatment of the three protocols. However, similar concentration patterns were shown after the last treatment in all the protocols. In conclusion, we monitored the blood P4 and E2 levels in Korean black goats following three different estrus induction protocols. Our findings may be used in other breeding programs of Korean black goats, such as artificial insemination and embryo transfer.

Lee Sang Seol's mathematics book Su Ri (이상설(李相卨)의 산서 수리(算書 數理))

  • Lee, Sang-Gu;Hong, Sung-Sa;Hong, Young-Hee
    • Journal for History of Mathematics
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    • v.22 no.4
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    • pp.1-14
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    • 2009
  • Since western mathematics and astronomy had been introduced in Chosun dynasty in the 17th century, most of Chosun mathematicians studied Shu li jing yun(數理精蘊) for the western mathematics. In the last two decades of the 19th century, Chosun scholars have studied them which were introduced by Japanese text books and western missionaries. The former dealt mostly with elementary arithmetic and the latter established schools and taught mathematics. Lee Sang Seol(1870~1917) is well known in Korea as a Confucian scholar, government official, educator and foremost Korean independence movement activist in the 20th century. He was very eager to acquire western civilizations and studied them with the minister H. B. Hulbert(1863~1949). He wrote a mathematics book Su Ri(數理, 1898-1899) which has two parts. The first one deals with the linear part(線部) and geometry in Shu li jing yun and the second part with algebra. Using Su Ri, we investigate the process of transmission of western mathematics into Chosun in the century and show that Lee Sang Seol built a firm foundation for the study of algebra in Chosun.

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