• Title/Summary/Keyword: Selection Analysis

Search Result 7,017, Processing Time 0.033 seconds

The Effects of Selection Attributes on Attitude and Repurchase Intention for Home Meal Replacement (HMR): Focused on Moderating Role of Brand Trust (HMR 선택속성이 태도와 재구매의도에 미치는 영향: 브랜드 신뢰의 조절역할을 중심으로)

  • Ra, Chae-Il
    • Culinary science and hospitality research
    • /
    • v.24 no.3
    • /
    • pp.25-34
    • /
    • 2018
  • The purposes of this study were to examine the effect of Home Meal Replacement (HMR) selection attributes on attitude and repurchase intention and to investigate the moderating role of brand trust between attitude and repurchase intention. This study surveyed the customers who have purchased HMR in Seoul and Gyeonggi area using a convenience sampling method. The survey was conducted from September 15, 2017 to October 25, 2017. A total of 250 questionnaires were distributed, and 237 copies were collected. Of these, 228 copies were used as valid data. The results of the analysis were as follows. First, convenience of the HMR selection attribute had a significant effect on attitude, and food quality and packaging had no significant effect on attitude. Second, attitude toward HMR had a significant effect on repurchase intention. Third, brand trust played a moderating role between HMR attitude and repurchase intention. Therefore, it is necessary for HTMcompanies to understand consumers' attitudes and consumption behaviors accurately by recognizing the selection attributes that consumers consider important By gaining strong brand trust, companies could increase repurchase intention.

Simple Statistical Tools to Detect Signals of Recent Polygenic Selection

  • Piffer, Davide
    • Interdisciplinary Bio Central
    • /
    • v.6 no.1
    • /
    • pp.1.1-1.6
    • /
    • 2014
  • A growing body of evidence shows that most psychological traits are polygenic, that is they involve the action of many genes with small effects. However, the study of selection has disproportionately been on one or a few genes and their associated sweep signals (rapid and large changes in frequency). If our goal is to study the evolution of psychological variables, such as intelligence, we need a model that explains the evolution of phenotypes governed by many common genetic variants. This study illustrates simple statistical tools to detect signals of recent polygenic selection: a) ANOVA can be used to reveal significant deviation from random distribution of allele frequencies across racial groups. b) Principal component analysis can be used as a tool for finding a factor that represents the strength of recent selection on a phenotype and the underlying genetic variation. c) Method of correlated vectors: the correlation between genetic frequencies and the average phenotypes of different populations is computed; then, the resulting correlation coefficients are correlated with the corresponding alleles' genome-wide significance. This provides a measure of how selection acted on genes with higher signal to noise ratio. Another related test is that alleles with large frequency differences between populations should have a higher genome-wide significance value than alleles with small frequency differences. This paper fruitfully employs these tools and shows that common genetic variants exhibit subtle frequency shifts and that these shifts predict phenotypic differences across populations.

Optimal Network Defense Strategy Selection Based on Markov Bayesian Game

  • Wang, Zengguang;Lu, Yu;Li, Xi;Nie, Wei
    • KSII Transactions on Internet and Information Systems (TIIS)
    • /
    • v.13 no.11
    • /
    • pp.5631-5652
    • /
    • 2019
  • The existing defense strategy selection methods based on game theory basically select the optimal defense strategy in the form of mixed strategy. However, it is hard for network managers to understand and implement the defense strategy in this way. To address this problem, we constructed the incomplete information stochastic game model for the dynamic analysis to predict multi-stage attack-defense process by combining Bayesian game theory and the Markov decision-making method. In addition, the payoffs are quantified from the impact value of attack-defense actions. Based on previous statements, we designed an optimal defense strategy selection method. The optimal defense strategy is selected, which regards defense effectiveness as the criterion. The proposed method is feasibly verified via a representative experiment. Compared to the classical strategy selection methods based on the game theory, the proposed method can select the optimal strategy of the multi-stage attack-defense process in the form of pure strategy, which has been proved more operable than the compared ones.

Optimized Serological Isolation of Lung-Cancer-associated Antigens from a Yeast Surface-expressed cDNA Library

  • Kim, Min-Soo;Choi, Hye-Young;Choi, Yong-Soo;Kim, Jhin-Gook;Kim, Yong-Sung
    • Journal of Microbiology and Biotechnology
    • /
    • v.17 no.6
    • /
    • pp.993-1001
    • /
    • 2007
  • The technique of serological analysis of antigens by recombinant cDNA expression library (SEREX) uses autologous patient sera as a screening probe to isolate tumor-associated antigens for various tumor types. Isolation of tumor-associated antigens that are specifically reactive with patient sera, but not with normal sera, is important to avoid false-positive and autoimmunogenic antigens for the cancer immunotherapy. Here, we describe a selection methodology to isolate patient sera-specific antigens from a yeast surface-expressed cDNA library constructed from 15 patient lung tissues with non-small cell lung cancer (NSCLC). Several rounds of positive selection using patient sera alone as a screening probe isolated clones exhibiting comparable reactivity with both patient and normal sera. However, the combination of negative selection with allogeneic normal sera to remove antigens reactive with normal sera and subsequent positive selection with patient sera efficiently enriched patient sera-specific antigens. Using the selection methodology described here, we isolated 3 known and 5 unknown proteins, which have not been isolated previously, but and potentially associated with NSCLC.

Analysis on location selection of the Memorial Park at Pangyo (판교 신도시내의 추모공원 입지선정 분석)

  • Lee, Sang-Kyu
    • Journal of the Korea Academia-Industrial cooperation Society
    • /
    • v.13 no.3
    • /
    • pp.1412-1417
    • /
    • 2012
  • Building new town 'Pangyo', it is proposed to estalbish a memorial park. But memorial parks are considered as a 'disliked' facilities among people, so its location selection is very difficult to decide. In this study the location possibility is reviewed in two steps through interview with professionals. For selection a location, many components are also checked and evaluated such as natural conditions, technical points and social factors. This study can be helpful to study more location selection for other 'disliked' facilities.

Development of Awarding System for Construction Contractors in Gaza Strip Using Artificial Neural Network (ANN)

  • El-Sawalhi, Nabil;Hajar, Yousef Abu
    • Journal of Construction Engineering and Project Management
    • /
    • v.6 no.3
    • /
    • pp.1-7
    • /
    • 2016
  • The purpose of this paper is to develop a model for selecting the best contractor in the Gaza Strip using the Artificial Neural Network (ANN). The contractor's selection methods and criteria were identified using a field survey. Fifty four engineers were asked to fill a questionnaire that covers factors related to the selection criteria of contractors practiced in Gaza Strip. The results shows that the dominant part of respondents (91%) confirmed that the current awarding method "the lowest bid price" is considered one of the major problems of the construction sector, "award the bid to the highest weight after combination of the technical and financial scores" represented 50% of the respondents. The criteria weights were determined based on Relative Importance Index (RII. Ninety-one tenders(13 projects) were used to train and test the ANN model after re-evaluating the contractors depend on the weights of factors to select the best contractor who achieves the highest score. Neurosolution software was used to train the models. The results of the trained models indicated that neural network reasonably succeeded in selection the best contractor with 95.96% accuracy. The performed sensitivity analysis showed that the profitability and capital of company are the most influential parameters in selection contractors. This model gives chance to the owner to be more accurate in selecting the most appropriate contractor.

Variable Selection for Logistic Regression Model Using Adjusted Coefficients of Determination (수정 결정계수를 사용한 로지스틱 회귀모형에서의 변수선택법)

  • Hong C. S.;Ham J. H.;Kim H. I.
    • The Korean Journal of Applied Statistics
    • /
    • v.18 no.2
    • /
    • pp.435-443
    • /
    • 2005
  • Coefficients of determination in logistic regression analysis are defined as various statistics, and their values are relatively smaller than those for linear regression model. These coefficients of determination are not generally used to evaluate and diagnose logistic regression model. Liao and McGee (2003) proposed two adjusted coefficients of determination which are robust at the addition of inappropriate predictors and the variation of sample size. In this work, these adjusted coefficients of determination are applied to variable selection method for logistic regression model and compared with results of other methods such as the forward selection, backward elimination, stepwise selection, and AIC statistic.

A Study on Effects of the Well-being Trend on Korean Traditional Confectionary Selection (웰빙 트랜드가 한과류 선택 속성에 미치는 영향에 관한 연구)

  • Choi, Soon-Hee;Choi, Young-Joon;Lee, Yoon-Joo
    • Culinary science and hospitality research
    • /
    • v.12 no.3 s.30
    • /
    • pp.32-48
    • /
    • 2006
  • Korean Traditional Confectionary is a part of our traditional culture taking a great part in our food culture for a while. However, it is now barely maintaining its name. In this research, a new consumption trend 'Well-being' is adopted to suggest the ways to develop the Korean Traditional Confectionary industry. This research intends to find out what effects the 'Well-being' trend, which originated from interest in health, have on Korean Traditional Confectionary selection. A survey includes the questions about the Well-being trend, selection and uses of Korean Traditional Confectionary, and demographic data. This research conducted analysis on 249 people who have used Korean Traditional Confectionary in Busan and Kyeongnam Province to find out effects of the Well-being trend on Korean Traditional Confectionary selection. This empirical study showed that the Well-being trend has some effects on Korean Traditional Confectionary selection while it has the greatest effects on healthy properties and commercial values of Korean Traditional Confectionary.

  • PDF

Path Selection Algorithms for Localized QoS Routing (로컬 QoS 라우팅을 위한 경로선택 알고리즘)

  • 서경용
    • Journal of the Institute of Electronics Engineers of Korea TC
    • /
    • v.40 no.12
    • /
    • pp.38-45
    • /
    • 2003
  • Recently, localized QoS routing scheme was recently proposed for overcome drawbacks of global state QoS routing schemes. Localized QoS routing dose not exchange QoS states among routers, but use virtual capacity based routing scheme instead. In localized QoS routing, to archive good performance, a set of candidate paths must be selected between the source and the destination effectively. In this paper we propose a few heuristics for effective path selection and develop path selection algorithms based on the heuristics. More detail analysis of the proposed algorithm is presented with simulation results which demonstrate that the path selection method can very affect the performance of localized QoS routing.

Efficient Selection Methods of Transmit-Receive Antennas Based on Channel Capacity For MIMO Systems (MIMO 시스템을 위한 채널 용량에 기반을 둔 송수신 안테나의 효율적인 선택 기법)

  • Kim, Hyo-Shil;Kim, Ryun-Woo;Kim, Jong-Deuk;Byun, Youn-Shik
    • The Journal of Korean Institute of Communications and Information Sciences
    • /
    • v.31 no.11C
    • /
    • pp.1092-1099
    • /
    • 2006
  • Future wireless communication systems will employ spatial multiplexing with multiple antennas at both transmitter and receiver to take advantage of larger capacity gains as compared to the systems that use a single antenna. However, in order to reduce higher hardware costs and computational burden, it will require an efficient transmit-receive antenna selection algorithm, which we propose in this paper. Through simulation and comparative analysis of various existing methods and the one we propose in this paper, the algorithm we propose was validated as nearer to the optimal selection technique than existing nearly optimal antenna selection schemes.