• Title, Summary, Keyword: Case Analysis

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Development and Application of Case-Based Pedagogy for Professional Growth in Mathematics of Elementary School Teachers (초등 교사의 수학과 전문성 신장을 위한 사례기반 교수법의 개발 및 적용)

  • Pang, Jeeng-Suk;Kim, Sang-Hwa;Choi, Ji-Young
    • The Mathematical Education
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    • v.48 no.1
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    • pp.61-80
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    • 2009
  • The purpose of this study was to develop case-based pedagogy in mathematics for elementary school teachers and to investigate how they participate in the course employing case-based pedagogy. The 13 cases were developed and employed in pre-service teacher education. As such, the cases covered all content areas across grades, and included detailed description of mathematics instruction, questions for discussion, theoretical review related to each case, focus analysis and additional analysis, etc. This paper describes in what ways the participant teachers discussed cases, how case-based pedagogy had an influence on the teachers' own instruction during the practicum period, and how they assessed case-based pedagogy. This paper provides issues and suggestions for the professional development of mathematics teachers on the basis of empirical background.

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The use of RKPM meshfree methods to compute responses to projectile impacts and blasts nearby charges

  • Choi, Hyung-Jin;Crawford, John;Wu, Youcai
    • Computers and Concrete
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    • v.7 no.2
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    • pp.119-143
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    • 2010
  • This paper presents results from a study concerning the capability afforded by the RKPM (reproducing kernel particle method) meshfree analysis formulation to predict responses of concrete and UHPC components resulting from projectile impacts and blasts from nearby charges. In this paper, the basic features offered by the RKPM method are described, especially as they are implemented in the analysis code KC-FEMFRE, which was developed by Karagozian & Case (K&C).

A Study on Verifying the Effect of Thermal Environment Control of Street Canyons based on Application of Green Wall System (거리협곡 벽면녹화 조성유형에 따른 미기상 변화 및 열환경 평가)

  • Kim, Jeong-Ho;Choi, Won-Jun;Yoon, Yong-Han
    • Journal of Environmental Science International
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    • v.25 no.2
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    • pp.311-322
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    • 2016
  • This study reduced and built Street Canyons created by skyscrapers in order to verify effect of Street Canyons by green wall within the city centre and analysed influence factors on temperature reduction according to applicative types of green wall in the lab. Applicative types were divided into three types such as non- greening type(Case A), one-side greening type(Case B), both side greening type(Case C). The result of analysis of each types showed that average temperature of Case B and Case C is respectively $1.0^{\circ}C$ and $1.7^{\circ}C$ lower than Case A. The result of analysis of WBGT was that the highest temperature was given by Case A($40.2^{\circ}C$) and second one was from Case B($39.8^{\circ}C$) and third one was from ($39.1^{\circ}C$) and in UTCI Case A records the highest temperature of $34.7^{\circ}C$ and Case B provided the second highest temperature of $33.9^{\circ}C$ and Case B gave the lowest temperature of $32.7^{\circ}C$. In PMV the highest temperature of 2.65 was from Case B and second one of 2.61 was from Case A and third one of 2.54 was from Case C. Duncan analysis of each types based on solar radiation and thermal comfort generated that there was analytical significance between Case A and Case B and Case B in terms of each types of average temperature reduction. The significance of thermal comfort in WBGT, MRT, PMV showed non-significance but, In UTCI it was analysed that there was significance between Case C and Case A.

Structural Analysis of Thermal Expansion of Aluminum Alloy Gearbox Case of High Speed Train (고속전철용 알루미늄합금 감속기 케이스의 열변형에 대한 구조해석)

  • 최진욱;민일홍;김완두;박순원;임영식
    • Proceedings of the KSR Conference
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    • pp.181-188
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    • 1999
  • For weight reduction of the gearbox of power bogie of high speed train, aluminum alloy is recommended for the material of the gerabox case. In this paper, three models(Steel G/B Case-Steel BRG. Case[model-S], Aluminum G/B Case-Aluminum BRG. Case[model-A], Aluminum G/B Case-Steel BRG. Case[model-AS]) were compared to each other in the view of thermal expansion. The evaluation of the internal load, thermal expansion deformation and lug analysis were executed. It results that the 'model-A' is excessively deformed and fail in the bolt hole of bearing case. Material change of the bearing case to steel(model-AS) is effective to restrain the deformation of the inner radios of the bearing case and to prevent the failure of that.

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A Case Study on the Analysis Method of the Accounting Information with Spreadsheet Program (스프레드시트를 활용한 회계정보 분석 사례연구)

  • Park Yong-Soo
    • Management & Information Systems Review
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    • v.6
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    • pp.63-88
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    • 2001
  • This paper presents a case study regarding a simple accounting information analysis method through the practical design using spreadsheet tool-Excel, which can offer to the management with more useful and practical information for the management decision-making. In this study, spreadsheet program is used to constitute case of the accounting information analysis method. Spreadsheet tool-Excel is easy to analyze the accounting information. And it can constitute a necessary program through function menu. In conclusion, the spreadsheet program should be used for quantitative analysis and evaluation on the accounting information. And it should be used to perform management activities. The results of this study may be summarized as follows: First, it is possible to constitute useful and practical case in the accounting information analysis method with spreadsheet program. Second, this study proposes directions for the accounting information analysis method with spreadsheet program.

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Worst Case Analysis for General Conventional Linear Regulator (일반적인 재래식 선형 전압 조절기의 최악 조건 해석)

  • Lee, Yun-Ki;Kwon, Ki-Ho;Choi, Seung-Woon;Lee, Sang-Kon
    • Aerospace Engineering and Technology
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    • v.8 no.1
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    • pp.162-171
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    • 2009
  • Linear regulator for generating various voltages in satellite electronics is implemented with radiation harden regulator chips or simple linear regulator circuits. For implementing linear regulator circuits, the detail design can be various. But the worst case analysis method and interesting analysis items for the linear regulator circuits can be generalized. So this paper describes and summarizes the general worst case analysis method and interesting analysis items for the conventional linear regulator circuits.

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Bankruptcy predictions for Korea medium-sized firms using neural networks and case based reasoning

  • Han, Ingoo;Park, Cheolsoo;Kim, Chulhong
    • Proceedings of the Korean Operations and Management Science Society Conference
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    • pp.203-206
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    • 1996
  • Prediction of firm bankruptcy have been extensively studied in accounting, as all stockholders in a firm have a vested interest in monitoring its financial performance. The objective of this paper is to develop the hybrid models for bankruptcy prediction. The proposed hybrid models are two phase. Phase one are (a) DA-assisted neural network, (b) Logit-assisted neural network, and (c) Genetic-assisted neural network. And, phase two are (a) DA-assisted Case based reasoning, and (b) Genetic-assisted Case based reasoning. In the variables selection, We are focusing on three alternative methods - linear discriminant analysis, logit analysis and genetic algorithms - that can be used empirically select predictors for hybrid model in bankruptcy prediction. Empirical results using Korean medium-sized firms data show that hybrid models are very promising neural network models and case based reasoning for bankruptcy prediction in terms of predictive accuracy and adaptability.

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Antitrust Case of the General Search Service -Focusing on EC's Decision about Google Case ('일반 검색 서비스'의 시장지배력 남용 판결 사례 분석 - Google에 대한 EC의 판결문을 중심으로)

  • Nam, S.J.;Lee, S.J.
    • Electronics and Telecommunications Trends
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    • v.33 no.2
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    • pp.64-76
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    • 2018
  • This paper addresses the antitrust case of Google's general search service to find evidence and logic used for defining markets, and the proof of dominant power and its abuse in detail. This antitrust case has certain meaning because it is not easy to apply traditional approaches to a general search service, which has two-sided market characteristics. This paper finds some implications through an analysis of the antitrust case shown below. First, for market definition, the overall qualitative analysis can be used to draw conclusions without a quantitative analysis, such as a Small but Significant and Non-transitory Increasing in Price (SSNIP) analysis. Second, the multi-homing behavior seems to be one of the key factors in judging the dominant power in Internet-based services. Lastly, the fact that the value of traffic can differ based on the traffic source needs to be considered to address the competition issue of Internet-based services.

A Methodology for CC-based Security Requirements Analysis and Specification by using Misuse Case Model (Misuse Case 모델을 이용한 CC기반의 보안요구사항 분식 및 명제 방법론)

  • 최상수;장세진;최명길;이강수
    • Journal of the Korea Institute of Information Security & Cryptology
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    • v.14 no.3
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    • pp.85-100
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    • 2004
  • All information system is information security system that enforced security function. To improve qualify of information security system, suity requirement analysis and specification must be Performed by consistently and typically at early requirement analysis step. In this paper, we propose a security requirements analysis and specification model and process by using Misuse Case Model that extends UML's Use Case Model. And, we propose a cost-effective security product selection algorithm that security product is sufficient of all constructed security functional requirements. It may raise quality of information security system that developed through proposed model and process.

Focus Types and Gradients in Korean Case Ellipsis

  • Lee, Han-Jung
    • Language and Information
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    • v.12 no.2
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    • pp.1-20
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    • 2008
  • This paper examines the effects of focus types on case ellipsis in Korean. A number of previous studies have suggested that accusative case markers in Korean and Japanese cannot be dropped when the object they mark is contrastively focused (Masunaga, 1988; Yatabe, 1999; Ko, 2000; Lee, 2002). Using experimental evidence, we argue against the view that case ellipsis in Korean is sensitive to the distinction between contrastive vs. non-contrastive focus. An alternative analysis is proposed which accounts for the phenomenon of variable case marking in terms of the interaction between the contrastive strength and the discourse accessibility of focused object NPs. By viewing patterns of case ellipsis as the result of balancing between these two forces, such an analysis can correctly predict the gradient pattern of case ellipsis shown by the three types of focused objects tested in the experiment (contrastive replacing focus, contrastive selecting focus and non-contrastive, informational focus), while at the same time offering an explanation for why subtypes of focus exert distinct influences on case ellipsis.

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