• Title/Summary/Keyword: RHA

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A Study on the Ancient Israelite Food Culture (고대 이스라엘의 음식문화에 대한 고찰)

  • Chae, Young-Chul;Rha, Young-Ah
    • Culinary science and hospitality research
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    • v.19 no.3
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    • pp.234-247
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    • 2013
  • This study was conducted to examine how the Jewish nation, which disappeared in the history, has come to history again after 2000 years, considering the investigation of the Pentateuch from old testaments in the bible that might be recorded from B.C 1446 to 1406 about 3440 years ago. The foods in the era of the Pentateuch were classified by a strict rule which stipulated eatable clean foods and uneatable unclean foods. According to the Pentateuch, Israelites must not have blood, and the rule has still influenced them strongly. Sacrificial rites were classified into five categories: burnt offering, grain offering, peace offering, sin offering and guilt offering. The subdivisions of the seasons were Passover, Festival of Unleavened bread, Festival of First fruits, Festival of Harvest, Festival of Trumpets, Day of Atonement, Festival of Shelters; and those seasons were explained clearly by their meanings and even methods. Contrary to general food culture instructed by custom and tradition, the commandments transcribed the food cultures for the Food Sanitation Act in themselves long ago. Those commandments even remark the results brought to the observant and the disobedient stringently.

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Finite Element Analysis of Gabled Hyperbolic Paraboloid Shells (모임지붕형 쌍곡포물선 쉘구조의 유한요소해석)

  • Kim, Seung-Nam;Yu, Eun-Jong;Rha, Chang-Soon
    • Journal of Korean Association for Spatial Structures
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    • v.12 no.1
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    • pp.87-98
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    • 2012
  • In this study, mechanical role of edge beams in the gabled hyperbolic paraboloid shells was investigated through the comparisons of Finite element(FE) analysis results between the shells structures with and without edge beams. In addition, the effects of roof slope was studied. FE analysis showed that roof loads was directly transferred to the supports at corners by the arch action in the diagonal direction of the shells, thus, less member forces in the edge and ridge beams but higher stresses near supports were estimated than those from the membrane theory. When the edge beams were removed, stress concentration in the shells near the supports and the deflections along the shell edge were increased. Such phenomenon were intensified as the roof slope decrease. Thus, in gable hyperbolic paraboloid shell, the thickness of the shell near supports needs to be increased and careful investigation should be made in the cases when the roof height is low and/or the edge beams are removed.

Significant Gene Selection Using Integrated Microarray Data Set with Batch Effect

  • Kim Ki-Yeol;Chung Hyun-Cheol;Jeung Hei-Cheul;Shin Ji-Hye;Kim Tae-Soo;Rha Sun-Young
    • Genomics & Informatics
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    • v.4 no.3
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    • pp.110-117
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    • 2006
  • In microarray technology, many diverse experimental features can cause biases including RNA sources, microarray production or different platforms, diverse sample processing and various experiment protocols. These systematic effects cause a substantial obstacle in the analysis of microarray data. When such data sets derived from different experimental processes were used, the analysis result was almost inconsistent and it is not reliable. Therefore, one of the most pressing challenges in the microarray field is how to combine data that comes from two different groups. As the novel trial to integrate two data sets with batch effect, we simply applied standardization to microarray data before the significant gene selection. In the gene selection step, we used new defined measure that considers the distance between a gene and an ideal gene as well as the between-slide and within-slide variations. Also we discussed the association of biological functions and different expression patterns in selected discriminative gene set. As a result, we could confirm that batch effect was minimized by standardization and the selected genes from the standardized data included various expression pattems and the significant biological functions.

Nonlinear Finite Element Analysis on Global and Distortional Buckling of Cold-Formed Steel Members (냉간성형강재의 전체좌굴 및 뒤틀림좌굴에 대한 비선형유한요소해석)

  • Kang, Hyun Koo;Rha, Chang Soon
    • Journal of the Computational Structural Engineering Institute of Korea
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    • v.27 no.2
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    • pp.79-86
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    • 2014
  • This paper presents modelling approaches for the global and distortional buckling of cold-formed built-up steel sections using the finite element software packages, ANSYS and ABAQUS. Thin thickness of the cold-formed steel causes nonlinear behaviour due to local and distortional buckling, thus careful consideration is required in modelling for numerical analysis. Implicit static modelling using ANSYS provides unstable numerical results as the load approaches the limit point but explicit dyamic modelling with ABAQUS is able to display the behaviour even in post-buckling range. Meanwhile, axial load capacities obtained from the numerical analysis show higher values than the experimental axial capacities, due to eccentricity during the test. Axial capacities of the cold-formed steel obtained through numerical analysis requires reduction factor, and this paper suggests 0.88 for the factor.

How Consumers Perceive Online Behavioral Advertising: Consumer Typology and Determining Factors (온라인 맞춤형 광고 인식에 따른 소비자유형 연구: 효용과 비용을 중심으로)

  • Lee, Jin-Myong;Rha, Jong-Youn
    • Journal of Digital Convergence
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    • v.13 no.9
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    • pp.105-114
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    • 2015
  • This study aims 1) to identify distinctive consumer groups according to their perception of benefits and costs of Online Behavioral Advertising(OBA), 2) to explore differences among them, and 3) to investigate antecedent variables that affect the consumers' perception of OBA. Online survey data collected from 1,000 online users. The findings of this study are as follows. First, the result of cluster analysis identified four distinctive consumer groups according to the levels of perceived benefits and costs of OBA: 'Indifferent group', 'cost-centered group', 'benefit-centered group', and 'Benefit-cost balanced group'. Second, four consumer groups showed differences in their demographics, advertising related variables, privacy related variables, and technology related variables. Third, according to multinomial logistic analysis, it was found that there were different factors affecting consumers' perception of benefits and costs of OBA.

Primary Hepatic Lymphoma: MR Imaging and Pathologic Correlation (일차성 간림프종: 자기공명영상과 병리소견의 연관)

  • Kim, Han-Na;Shin, Yu-Ri;Rha, Sung-Eun;Jung, Eun-Sun;Oh, Soon-Nam;Choi, Joon-Il;Jung, Seung-Eun;Lee, Young-Joon
    • Investigative Magnetic Resonance Imaging
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    • v.14 no.2
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    • pp.151-155
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    • 2010
  • Primary hepatic lymphoma is extremely rare, representing less than 1% of all extranodal lymphomas. We report MR imaging features and pathologic correlation of a case of primary hepatic lymphoma. MR images showed a large lobulated mass with gradual contrast enhancement, resembling intrahepatic cholangiocarcinoma. However, both hepatobiliary phase image obtained 20 minutes after injection of hepatocyte specific contrast agent and diffusion-weighted image demonstrated characteristic three layered pattern representing viable lymphoma in the outer layer, tumor necrosis in the middle layer and necrotic hepatic parenchyma in the center.

A Theoretical Comparative Study of Human Resource Security Based on Korean and Int'l Information Security Management Systems (국내·외 정보보호 관리체계기반의 인적보안의 이론적 비교연구)

  • Rha, Hyeon-Dae;Chung, Hyun-soo
    • Journal of Convergence Society for SMB
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    • v.6 no.3
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    • pp.13-19
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    • 2016
  • In various ICBM (IoT, Bigdata, Cloud, Mobile) IT convergence environments, IT technologies have been evolved, new information security threats have been occurred. As information security incidents in major public agencies, financial institutions and companies occurred, it was emphasized that the importance of human security was disclosed. Thus, implementing of information security management system could protect hacks and security breaches and respond quickly to accidents so it minimized the sized of loss. In this paper, comparison of human security controls shown in ISO27001, COBIT, NIST 800-53, K-ISMS, Cyber Security Framework such as the main information security management systems was analyzed, and proposed of the security implications about effective controls of human resources security issues.

A Comparative Study on Oocyte Retrieval for I.V.F. (I.V.F.를 위한 난자채취 방법의 비교연구)

  • Kim, Suh-Kyung;Kim, Young-Tae;Kim, Sun-Haeng;Rha, Jung-Ryul;Ku, Byung-Sahm
    • Clinical and Experimental Reproductive Medicine
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    • v.17 no.2
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    • pp.115-121
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    • 1990
  • Ultrasonically guided oocyte collection gradually replaces laparoscope in many IVF center. In present study, we compare the efficacy of both methods in our IVF program. Totally 377 cycles which were undertaken in vitro fertilization treatment were divided into 2 groups. Ultrasonically guided transvaginal follicular aspiration was performed in 188 cycles and laparoscopic follicular aspiration was performed in 189 cycles under local anesthesisa. The mean age for both groups was similar. Follicular recruitment was achieved with human menopausal gonadotropin (hMG) or a com bination of clomiphene citrate and hMG or a combination of FSH and hMG. In the ultrasonically guided aspiration group, 1821 follicles were aspirated with 61.8% of recovery rate (1125 oocytes), 81.5% of embryo transfer rate (145 cycles) and (17%), 26 cases intrauterine pregnancies were estabilished. In the laparoscopic group, 604 follicles were aspirated with 68.7% recovery rate (445 oocytes) and a 79.9% ET rate (127 cycles), 11 cases (8.7%) intrauterine pregnancies were estabilished. A valid comparison of these data is not possible because the 2 groups are dissimilar for factors known to influence oocyte development and recovery. No statistically significant differences could be demonstrated between 2 groups in all but the recovery rate and clinical pregnancy rate, In ultrasound group, the clinical pregnancy rate was significantly higher than that of laparoscope group. The potentially detrimental effect of CO2 pnemoperitonium present during laparoscope but not in ultrasound guided recovery on ova quality may underlie the observed difference in the clinical pregnancy rate between the 2 groups. Ultrasound guided aspiration seems to be as effective as laparoscopy in terms of oocyte retrieval and conception rate. Furthermore, the procedure is simple and inexpensive, it may replace laparoscopy as a method for oocyte collection in most patients who undergo IVF.

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Pregnancies by In Vitro Fertilization and Embryo Transfer (체외수정과 배이식에 의한 임신성공예에 관한 연구)

  • Ku, Pyong-Sahm;Yoo, Dong-Wha;Lee, Kyu-Won;Rha, Joong-Yul;Hong, Sung-Bong;Bae, In-Ha
    • Clinical and Experimental Reproductive Medicine
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    • v.13 no.2
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    • pp.121-127
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    • 1986
  • We have reviewed 59 cases of patients amoung 65 cases who underwent IVF and ET with reasonable indications irom 1984 and the results as follows. 1. Major indications for IVF and ET were tubal factor (40.7%), unexplained infertility (25.4%), endometriosis (15.3%), failed AID and AIH (10.1 %), and sperm abnormality (8.5%). 2. For superovulation of human oocytes, l00mg of clomiphene citrate and 75 IU of HMG used. The monitoring of oocyte maturation was bone by ultrasound examination and serum 17-${\beta}$ estradiol, LH values. The peak $E_2$ value was 956.36${\pm}$702.13 pg/ml. 3. The oocytes were obtained by laparoscopy 24-36 hours after the injection of HCG. 4. The mean numbers of follicles at laparoscopy was 3.06 and the successful rate of laparoscopy was 79.7%. 5. And 165 follicles were aspirated from which 98 oocytes were recovered, 59.4% of all follicles had at least one oocyte aspirated. 21.4% of the eggs were mature, 52.0% were moderate, 26.5%. were immature. 6. 67.3% of oocytes were cleaved and were transferred at 4-6 cell stages. 7. Four pregnancies including one chemical pregnancy and one spontaneous abortion were established by ${\beta}$-subunit, u-hCG and ultrasound examinations.

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A study on development of qualification item of e-Learning instructional designer (e-Learning 교수설계자 자격종목 개발 연구)

  • Rha, Hyeon-Mi;Chang, Hea-Jung;Chung, Ran
    • Journal of The Korean Association of Information Education
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    • v.13 no.2
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    • pp.169-182
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    • 2009
  • The purpose of this paper is to develop the qualification system of instructional designer in e-Learning field in order to provide e-learning experts for industry. The shortage of human resources is a serious problem in the e-learning industry. The following set of objectives were formulated to fulfill the study purpose. First, analyze the present situations and suggestions of the e-learning expert. Second, to analyze current states of private qualification administration/qualification administration authorization in e-learning field. Third, analyze the needs of universities and companies in e-learning qualification administration. Finally, based on the above three objectives, the study developed the practical qualification system, job analysis, methods and questions for an examination of e-learning instructional designer.

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