• Title/Summary/Keyword: model rank

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Factors Affecting Survival in Patients with Colorectal Cancer in Shiraz, Iran

  • Zare-Bandamiri, Mohammad;Khanjani, Narges;Jahani, Yunes;Mohammadianpanah, Mohammad
    • Asian Pacific Journal of Cancer Prevention
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    • v.17 no.1
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    • pp.159-163
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    • 2016
  • Background: Colorectal cancer (CRC) is the third most common cancer in the world, and the fourth in Iran in both genders. The aim of this study was to find predictive factors for CRC survival. Materials and Methods: Medical records of 570 patients referred to the radiotherapy oncology department of Shiraz Namazi hospital from 2005 to 2010 were retrospectively analysed. Data were collected by reviewing medical records, and by telephone interviews with patients. Survival analysis was performed using the Cox's regression model with survival probability estimated with Kaplan-Meier curve. The log-rank test was used to compare survival between strata. Data was analyzed with Stata 12. Results: The five-year survival rate and the mean survival time after cancer diagnosis were 58.5% and $67{\pm}4months$. On multivariate analysis, age of diagnosis, disease stage and primary tumor site, lymphovascular invasion and type of treatment (in colon cancer) were significant factors for survival. Conclusions: Age of diagnosis and type of treatment (adjuvant therapy in patients with colon cancer) were two modifiable factors related to survival of CRC patients. Therefore earlier diagnosis might help increase survival.

A Study on Recognition of Magazine Advertisements Due to Interaction Effects of Between Usage of Fashion Illustrations and Photographs (패션 일러스트레이션을 이용한 잡지광고와 사진을 이용한 잡지광고의 상호작용에 의한 재인에 관한 연구)

  • 노윤선;박민여
    • Journal of the Korean Society of Costume
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    • v.53 no.8
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    • pp.105-120
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    • 2003
  • Despite the creative strengths fashion illustrations, most fashion related advertisements use photographs instead. Furthermore, there is not much study done on the effects of fashion illustrations. Through this study the authors discover the effectiveness of fashion related magazine advertisements using fashion illustrations by looking into the level of recognition due to interaction effects between advertisements using photographs and advertisements using fashion illustrations. This study, however, does not focus on comparing the different levels of recognition effect between photographs and fashion illustrations. After a literature review of magazines with high rank subscriptions, an experiments was conducted. A booklet was made using 16 fashion illustration advertisements and 16 photograph advertisements all designed to control variables other than advertisement type. Then a survey was taken using the booklet to measure the recognition levels of the different types of advertisements. Through an ANOVA test of the 2 ${\times}$ 3 factorial designed model the authors derived results implying that interaction effects do exist between the different types of advertisements. In the environment where advertisements using photographs dominate, advertisements using fashion illustrations can effectively be recognised by the consumers. Through this study, the authors wish to give guidance to decision makers in the fashion industry related to the type of printed advertisement they should seek.

A Study on System Identification of Active Magnetic Bearing Rotor System Considering Sensor and Actuator Dynamics (센서와 작동기를 고려한 자기베어링 시스템의 식별에 관한 연구)

  • Kim, Chan-Jung;Ahn, Hyeong-Joon;Han, Dong-Chul
    • Proceedings of the KSME Conference
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    • 2003.11a
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    • pp.1458-1463
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    • 2003
  • This paper presents an improved identification algorithm of active magnetic bearing rotor systems considering sensor and actuator dynamics. An AMB rotor system has both real and complex poles so that it is very hard to identify them together. In previous research, a linear transformation through a fictitious proportional feedback was used in order to shift the real poles close to the imaginary axis. However, the identification result highly depends on the fictitious feedback gain, and it is not easy to identify the additional dynamics including sensor and actuators at the same time. First, this paper discusses the necessity and a selection criterion of the fictitious feedback gain. An appropriate feedback gain minimizes dominant SVD(Singular Value Decomposition) error through maximizing rank deficiency. Second, more improvement in the identification is achieved through separating the common additional dynamics in all elements of frequency response matrix. The feasibility of the proposed identification algorithm is proved with two theoretical AMB rotor models. Finally, the proposed scheme is compared with previous identification methods using experimental data, and a great improvement in model quality and large amount of time saving can be achieved with the proposed method.

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Productivity Analysis in Fisheries Processed Wholesale Products Using Malmquist Productivity Index (맘퀴스트 생산성지수를 이용한 수산물 가공식품 도매업의 생산성 분석에 관한 연구)

  • Pyo, Hee-Dong;Kim, Jong-Cheon
    • Ocean and Polar Research
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    • v.32 no.4
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    • pp.387-396
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    • 2010
  • This paper estimates changes in the total factor productivity and technical efficiency change index and the technical change index using the Malmquist productivity index (MPI) in fishery-processed wholesale products over the time period spanning 2006-2008. The model considers a number of employees and operating costs as input factors, and sales and EBIT (earnings before tax and interest) as output factors. The results demonstrate that, between 2006 and 2007, there has generally been no technical progress, although a small improvement in productivity was detected in the sales scale of 10 billion won-50 billion won. Between 2007 and 2008, there was technical progress in the majority of DMU, except within the range of 20 million won-10 billion won. Wilcoxon's rank-sum test, however, demonstrates no statistically significant differences in productivity between the two periods.

Determinants of Retail Banking Efficiency: A Case of Vietcombank Branches in the Mekong-Delta Region

  • LE, Thi Thu Diem
    • The Journal of Asian Finance, Economics and Business
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    • v.7 no.7
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    • pp.439-451
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    • 2020
  • This study focused on researching the factors affecting retail banking efficiency of Vietcombank branches in the Mekong-Delta region. By collecting data from financial statements from 15 branches of VCB in the Mekong-Delta Region between 2015 and 2018, the paper applies DEA estimation to measure the effectiveness of retail banking activities and uses the Tobit regression model to identify factors affecting retail banking efficiency. The results demonstrate that the retail banking efficiency of branches averaged 52.5% during the period. The rating result shows the branches in An Giang, Can Tho, Dong Thap, Kien Giang, Long An, Phu Quoc and Tra Noc rank at the top technical efficiency. In group of medium efficiency, there are branches in Soc Trang, Tien Giang and Vinh Long. In the category of the poor efficiency are the branches in Bac Lieu, Ben Tre, Ca Mau, Chau Doc and Tra Vinh. The results also show that bank scale-related factors, capital adequacy, credit quality, time specific and region impact significantly the retail banking efficiency. The research not, only contributes to enriching the empirical research method but also is significant for the management activities in business developing strategies, improving the operational efficiency of Vietcombank in the region.

Critical Success Factors of TQM Implementation in Vietnamese Supporting Industries

  • TRANG, Tran Van;DO, Quang Hung
    • The Journal of Asian Finance, Economics and Business
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    • v.7 no.7
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    • pp.391-401
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    • 2020
  • The objective of this study is to prioritize the Total Quality Management (TQM) factors based on fuzzy Analytical Hierarchy Process (AHP) method in Vietnamese supporting industries. Through an in-depth literature review, eight criteria were identified. These criteria were then divided into 32 sub-criteria. The fuzzy AHP is used to determine the percent weightings of eight categories of performance criteria that were identified via a review of the quality-management literature. These criteria include management commitment, role of the quality department, training and education, continuous improvement, quality policies, quality data and reporting, communication to improve quality, and customer satisfaction orientation. An empirical analysis of the criteria of each stage using the fuzzy AHP methodology and the expert opinion of quality management are used to evaluate the percent weightings of the criteria and sub-criteria that are synonymous with TQM implementation. The results showed that management commitment is the most critical factor; among sub-criteria, supports and responsibilities of top management is the most important. The study also identified the rank order of critical success factors of TQM. The findings suggest a generic hierarchy model for organizations to prioritize the critical factors and formulate strategies for implementing TQM in supporting industries, as well as other industries in Vietnam.

A Case Study of Health Impact Assessment on Incinerator Construction Project - Human Risk Assessment due to Inhalation Exposure to Heavy Metals - (소각로 건설사업에 대한 건강영향평가 사례연구 - 중금속 흡입에 따른 인체 위해성 평가 -)

  • Kim, Youngha;Choi, Sangki;Lee, Youngsoo
    • Journal of Environmental Impact Assessment
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    • v.18 no.1
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    • pp.11-19
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    • 2009
  • We conducted human risk assessment due to inhalation exposure to heavy metals emitted from incinerator. The process of health impact assessment(HIA) on incinerator is as follows: The first step is to presume and calculate the amount of heavy metals emitted using emission factor. The second step is to conduct an exposure assessment using the K-SCREEN model which is used for predicting the concentration in a conservative method. The last step is to carry out a risk assessment on carcinogenic and non-carcinogenic substances. This study revealed that rank of carcinogenic human risk was $Cr^{+6}$ > As > Ni > Cd, and values of human risk assessment on carcinogenic and non-carcinogenic substances is lower than the US criteria for risk assessment except $Cr^{+6}$. It is expected that the technique of HIA, especially human risk assessment on heavy metals, would be applied to the incinerator construction project. In addition, more systematic studies are needed to overcome some weak points and limits found in this study.

A Combined Procedure of RSM and LHS for Uncertainty Analyses of CsI Release Fraction Under a Hypothetical Severe Accident Sequence of Station Blackout at Younggwang Nuclear Power Plant Using MAAP3.0B Code

  • Han, Seok-Jung;Tak, Nam-Il;Chun, Moon-Hyun
    • Nuclear Engineering and Technology
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    • v.28 no.6
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    • pp.507-521
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    • 1996
  • Quantification of uncertainties in the source term estimations by a large computer code, such as MELCOR and MAAP, is an essential process of the current Probabilistic safety assessment. The main objective of the present study is to investigate the applicability of a combined procedure of the response surface method (RSM) based on input determined from a statistical design and the Latin hypercube sampling (LHS) technique for the uncertainty analysis of CsI release fractions under a Hypothetical severe accident sequence of a station blackout at Younggwang nuclear power plant using MAAP3. OB code as a benchmark problem. On the basis of the results obtained in the present work, the RSM is recommended to be used as a principal tool for an overall uncertainty analysis in source term quantifications, while using the LHS in the calculations of standardized regression coefficients (SRC) and standardized rank regression coefficient (SRRC) to determine the subset of the most important input parameters in the final screening step and to check the cumulative distribution functions obtained by RSM. Verification of the response surface model for its sufficient accuracy is a prerequisite for the reliability of the final results that can be obtained by the combined procedure proposed in the present work.

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Aqueous Solubility Enhancement of Some Flavones by Complexation with Cyclodextrins

  • Kim, Hyun-Myung;Kim, Hyun-Won;Jung, Seun-Ho
    • Bulletin of the Korean Chemical Society
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    • v.29 no.3
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    • pp.590-594
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    • 2008
  • The inclusion complexes of cyclodextrins (CDs) with flavones in aqueous solution were investigated by phase solubility measurements. The effect of b -cyclodextrin (b -CD), heptakis (2,6-di-O-methyl) b -cyclodextrin (DM-b -CD) and 2-hydroxypropyl-b -cyclodextrin (HP-b -CD) on the aqueous solubility of three flavones, namely, chrysin, apigenin and luteolin was investigated, respectively. Solubility enhancements of all flavones obtained with three CDs followed the rank order: HP-b -CD > DM-b -CD > b -CD, and besides, CDs show higher stability constant on luteolin than that on others flavones. 1H-nuclear magnetic resonance (NMR) spectroscopy and molecular modeling was used to help establish the model of interaction of the CDs with luteolin. NMR spectroscopic analysis suggested that A-C ring, and part of the B ring of luteolin display favorable interaction with the CDs, which was also confirmed by docking studies based on the molecular simulation. The observed augmentation of solubility of luteolin by three CDs was explained by the difference of electrostatic interaction of each complex, especially hydrogen bonding.

Analysis of Land Suitability for Rural Area Using the Geographical Information System (지리정보시스템을 이용한 농촌 지역의 토지 적합성 분석)

  • Rhee, Shin-Ho;Choi, Jin-Yong;Kim, Han-Joong
    • Journal of Korean Society for Geospatial Information Science
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    • v.1 no.1 s.1
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    • pp.153-158
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    • 1993
  • The direction of land use for the subject district (Zuksan-myun, Anseong-gun, Kyeonggi-do) were analyzed as the basic model of new rural land management system connected to production and living. General land use planning was presented by land suitability classification which was applied to geographical information system(software ARC/INFO). The course of analysis of land suitability using the geographical information system were generalized and the results of analysis for paddy and upland fields and settlement were presented as 5 criteria of the suitability rank. It was found out that the analysis of land suitability is able to use as primary data of rural land use planning.

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