• Title/Summary/Keyword: Empirical designs

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Empirical Statistical Power for Testing Multilocus Genotypic Effects under Unbalanced Designs Using a Gibbs Sampler

  • Lee, Chae-Young
    • Asian-Australasian Journal of Animal Sciences
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    • v.25 no.11
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    • pp.1511-1514
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    • 2012
  • Epistasis that may explain a large portion of the phenotypic variation for complex economic traits of animals has been ignored in many genetic association studies. A Baysian method was introduced to draw inferences about multilocus genotypic effects based on their marginal posterior distributions by a Gibbs sampler. A simulation study was conducted to provide statistical powers under various unbalanced designs by using this method. Data were simulated by combined designs of number of loci, within genotype variance, and sample size in unbalanced designs with or without null combined genotype cells. Mean empirical statistical power was estimated for testing posterior mean estimate of combined genotype effect. A practical example for obtaining empirical statistical power estimates with a given sample size was provided under unbalanced designs. The empirical statistical powers would be useful for determining an optimal design when interactive associations of multiple loci with complex phenotypes were examined.

A Study on Optimal Designs of Server Port Connections for Smaller User Group

  • Lee, Sang-Bock;Kim, Hyun-Soo
    • Journal of the Korean Data and Information Science Society
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    • v.17 no.1
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    • pp.13-18
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    • 2006
  • The purpose of this paper is to identify optimal designs of server port connections between two server system for 200-300 user group. Given 3 empirical models as user and port parallel server types under some conditions of 100 Mbps and optimal CPU temperature suggested by Lee and Kim(2005), our results are shown; port parallel model was optimal when traffic processing times measured, and 250 traffics was jumping point as a critical point in our cases.

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Research on Dyeing Crafts of Chinese Indigo Dyed Designs (중국 남인염포 염색 공예 연구)

  • Lee, Min-Jeong;Sohn, Hee-Soon
    • The Research Journal of the Costume Culture
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    • v.19 no.2
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    • pp.376-388
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    • 2011
  • The purpose of this study is to examine the types and characteristics of Chinese indigo dyed designs performed until today in private houses of Chinese minority races and to examine the modern value of traditional dyeing crafts of minority races by investigating the cases of utilizing modern private Chinese indigo dyed designs. As the research methodology for theoretical study about the history of Chinese traditional pattern dyeing, the origin, types and characteristics of Chinese indigo dyed designs, the preceding research data, photo data, and Internet data were utilized, and for the empirical research on Chinese traditional dyeing techniques and the cases of utilizing today Chinese indigo dyed designs, the on-site survey on Guizhou and Yunnan was conducted during February and March 2008 and the data were collected and analyzed. Based on the results of this research, it was found that Chinese indigo dyed designs represented Chinese traditional pattern dyeing, which was inherited and developed mainly in Chinese minority races and Chinese. It could be seen that according to geographical distribution and characteristics of each race, the types and characteristics of dyeing techniques were formed, which are classified into the batik of the Miao of Guizhou in the Chinese southwestern region, the tie-dyeing of Bai of Yunnan, and Chinese blue calico(resist printing) of Chinese private houses in the Hunan and Huseo regions, and these represent the three typical Chinese dyeing techniques today. Based on the results of empirical research on the utilizing cases, focusing on the traditional living handicrafts of Chinese minority races, traditional cultural articles, and artworks, the modern values such as practical, cultural, and artistic values of Chinese indigo dyed designs could be rediscovered.

An Evaluation of Listening Studies concerning Discourse Signaling Cues: Focus on Research Designs

  • Jung, Euen-Hyuk
    • English Language & Literature Teaching
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    • v.15 no.4
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    • pp.55-74
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    • 2009
  • Although a considerable amount of research on discourse signaling cues has been conducted in reading, little attention has been paid to such cues in the area of listening. Moreover, despite the solid evidence showing that cues have beneficial effects for reading comprehension, L2 listening research has produced mixed findings about the role of cues. Such discrepancies among these findings might be due in part to inadequate research methodologies as well as the idiosyncratic features of their experimental designs. However, no study, to date, has thoroughly examined the research designs of listening comprehension studies on cues. Consequently, this study critically evaluates the present state of research designs and reporting practices of studies investigating the role of cues in listening comprehension. The present study aims to provide insights into areas that require empirical attention and systematic investigation. It also seeks to encourage improved and refined research practices for future studies. This paper is organized as follows: It will first critically review the empirical findings regarding cues in the area of L1 listening comprehension. Second, it will present a critical evaluation of L2 listening studies on cues. Finally, it will address the major research design issues of currently available listening studies and provide suggestions for improvement in future research.

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An Empirical Study on Jitter between Two Servers Port Connections

  • Lee, Sang-Bock;Kim, Hyun-Soo
    • Journal of the Korean Data and Information Science Society
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    • v.17 no.1
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    • pp.87-94
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    • 2006
  • The purpose of this paper is to measure jitter between two server systems. Given 3 empirical models as user and port parallel server types under some conditions of 100 Mbps and optimal CPU temperature suggested by Lee and Kim(2005), our results are shown; jitter was usually measured above 3000 ms in most empirical cases, jumping points were observed around 250 processing traffics, and port parallel model was optimal in our cases.

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Empirical Optimality of Coverage Design Criteria for Space-Filling Designs

  • Baik, Jung-Min
    • The Korean Journal of Applied Statistics
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    • v.25 no.3
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    • pp.485-501
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    • 2012
  • This research is to find a design D that minimizes forecast variance in d dimensions over the candidate space ${\chi}$. We want a robust design since we may not know the specific covariance structure. We seek a design that minimizes a coverage criterion and hope that this design will provide a small forecast variance even if the covariance structure is unobservable. The details of an exchange or swapping algorithm and several properties of the parameters of coverage criterion with the unknown correlation structures are discussed.

Development of a Classification Scheme for Management of Technology Research - Approach on Research Designs and Methodologies - (기술경영 연구 분야의 연구 분류체계 제시에 관한 연구 - 연구 설계와 연구 방법론을 중심으로 -)

  • Lee, Donggeol;Lee, Heesang;Yoon, Inhwan
    • Management & Information Systems Review
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    • v.35 no.4
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    • pp.269-287
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    • 2016
  • This paper proposes the newly developed a classification scheme for Management of Technology (MOT) research, by analyzing research papers published in major academic journals of MOT. To refine our proposed classification, we conducted a contents analysis after collecting 696 papers published in 11 major international journals and 2 representative domestic journals including Journal of Korean Technology Innovation Society, from 2006 to 2012. Our findings show that this classification scheme is composed of total 8 methodologies within each research design such as conceptual qualitative, empirical qualitative, conceptual quantitative, and conceptual quantitative researches. In addition, we provide research reviews based on characteristics between 1) domestic and foreign researchers, 2) domestic and international journals, and 3) different major domestic journals as follows. Firstly, the underlying trends of research design and methodologies in MOT research are concentrated in empirical studies regardless of the origin of researchers and journals. However, the proportion of theoretical discussion in the international journals is higher than that of theoretical discussion in the domestic journals. Secondly, there are many more empirical qualitative researches and archival researches written in the Journal of Korean Technology Innovation Society, whereas the proportion of empirical quantitative research and conceptual research published in the Journal of Technology Innovation is higher than that. From the results, this paper will contribute to choosing research designs and methodologies more suitable to research purpose for future MOT researchers and provide the direction for concrete systematic approach on research designs and methodologies.

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Characteristics of Silk fabrics which was Collected in Temples of the Middle and the Latter Term Chosun Period (조선 중.후기 사찰 견직물에 나타난 특성)

  • 장현주;권영숙
    • Journal of the Korean Society of Costume
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    • v.51 no.8
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    • pp.1-12
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    • 2001
  • An empirical review on silk fabrics of the Chosen period showed that they varied in kind and design according to their uses. Thus the purpose of this study is to classify the fabrics into temple and excavated fabrics according to their uses and collected places and then to examine characteristics of each type. Concerning fabrics collected in temples. satin was most used, followed by twill, tabby, multiply, leno and gauze and clossing fabrics in order. Tabby and silk fabrics used Ju(紬) as their main material. Cho( ) was much more used in fabrics collected in temples than in excavated ones. This indicate that Cho( ), more luxurious than Ju(紬), had divine applications such as covering Buddha s bones of temples. Brilliant, colorful multiply fabrics using goldern and color threads had high effects of ornamenting altar covers, umbrellas, surplices and palanquins. Fabrics held in temples adapted composite designs, in which more than two shapes were used, rather than single ones. Single designs employed plant shapes in most cases. followed by treasures pattern, geometrical, cloud and animal shapes in order. Most composite designs used a combination of animal and plant shapes, followed by plant and geometry, treasures pattern and plant, cloud and animal, and animal, treasures pattern and plant in order. Few excavated fabrics used animal designs while fabrics collected in temples were often designed with shapes of propitious animals such as dragon. Treasures pattern. representing a good omen of Buddhism, was often used sing1y or sometimes compositely with another design.nother design.

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Literature Review on the Experimental Designs in KSQM for 50 Years (품질경영학회 50주년 특별호: 실험계획법 분야 연구 리뷰)

  • Kim, Sang Ik;Lee, Sang Bok;Lim, Yong Bin;Jang, Dae Heung
    • Journal of Korean Society for Quality Management
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    • v.44 no.2
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    • pp.245-264
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    • 2016
  • Purpose: This article focuses on the reviewing the papers published in the Journal of the Korean Society for Quality Control (JKSQC) and the Journal of the Korean Society for Quality Management (JKSQM) since 1965, in the area of design of experiments. In this paper, moreover, some other contents of another statistical quality control areas is included. Methods: The reviewed articles are classified into the three main categories: theory and application of experimental designs, response surface methodology and mixture experiments, and roust designs. Some omitted papers in the other areas of reviewing works are also included in this paper, and the contents and relationships of the published articles are examined and summarized in each sub-field. Results: We summarize the reviewed papers in the chronological road-maps for each sub-field, and outline the relations of the connected papers. We provide comments on the contents and the contributions of the reviewed papers. The future direction of the research in the theory and application areas of experimental designs can be provided by the contents of this research. Conclusion: The diverse topics on the improving the quality in the various industry fields are studied and published on the theory, methodology and the empirical application in the fields of designs of experiments. We can see that the Korean Society for Quality Management (KSQM) has tremendously contributed on the improvement of quality in the manufacturing and service industries by publishing the reviewed articles in this paper.

Textile design development using of traditional elements - Focused on patterns and colors of King Young royal family costume in the late Joseon Dynasty - (전통 요소를 활용한 텍스타일 디자인 개발 - 조선조 말기 영왕가 왕실 복식에 나타난 문양과 색채를 중심으로 -)

  • Yum, Misun
    • The Research Journal of the Costume Culture
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    • v.21 no.5
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    • pp.655-670
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    • 2013
  • The purpose of this study is to identify the figurative characteristics and symbolic meanings of the patterns of royal families in the late Joseon Dynasty based on the theoretical examination as well as the overall characteristics of the colors based on the quantitative analysis of colors. This study focused on the costumes of King Young royal families in the late Joseon Dynasty which is the last costume of Joseon Dynasty and classified 129 relics under preservation for the analysis. This study analyzed the colors using the digital data in the picture brochure as the previous studies did and presented the color palette. Based on this, a variety of textile designs that are developed by using the traditional patterns and colors could be applied to the modern fashion designs. For Patterns used in costumes of King Young royal families, the five pattern categories include animals, plants, letters, and geometric patterns and the final category of other types. The features of color in the costume were v tone of Y color and lt and p tones of Y color. The implication of this study is to develop textile designs which reflects conversion of past and modern cultures and cultural identity by applying the traditional cultural elements through literature review and empirical study and theses developed 8 textile designs could be applied to the various modesrn fashion designs.