• KSII Transactions on Internet and Information Systems (TIIS)
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• 제15권4호
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• pp.1426-1447
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• 2021

The payoff game between task publishers and users in the mobile crowdsensing environment is a hot topic of research. A optimal payoff selection model based on stochastic evolutionary game is proposed. Firstly, the process of payoff optimization selection is modeled as a task publisher-user stochastic evolutionary game model. Secondly, the low-quality data is identified by the data quality evaluation algorithm, which improves the fitness of perceptual task matching target users, so that task publishers and users can obtain the optimal payoff at the current moment. Finally, by solving the stability strategy and analyzing the stability of the model, the optimal payoff strategy is obtained under different intensity of random interference and different initial state. The simulation results show that, in the aspect of data quality evaluation, compared with BP detection method and SVM detection method, the accuracy of anomaly data detection of the proposed model is improved by 8.1% and 0.5% respectively, and the accuracy of data classification is improved by 59.2% and 32.2% respectively. In the aspect of the optimal payoff strategy selection, it is verified that the proposed model can reasonably select the payoff strategy.

• Genomics & Informatics
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• 제6권4호
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• pp.173-180
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• 2008

The human genome has evolved as a consequence of evolutionary forces, such as natural selection. In this study, we investigated natural selection on the human genes by comparing the numbers of nonsynonymous (NS) and synonymous (S) mutations in individual genes. We initially collected all coding SNP data of all human genes from the public dbSNP. Among the human genes, we selected 3 different selection groups of genes: positively selected genes (NS/S${\geq}$3), negatively selected genes (NS/S${\leq}$1/3) and neutral selection genes (0.9

• 한국산학기술학회논문지
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• 제10권10호
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• pp.2864-2872
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• 2009

본 연구는 다음과 같이 진행된다. 첫째, 청주지역 대학생들이 지각하는 패밀리 레스토랑과 패스트푸드 레스토랑의 선택속성을 살펴본다. 둘째, 청주지역 대학생들이 레스토랑 이용 후 지각하는 패밀리 레스토랑과 패스트푸드 레스토랑의 만족도를 조사한다. 셋째, 패밀리 레스토랑과 패스트푸드 레스토랑의 선택속성에 대해 요인분석을 실시, 어떠한 선택속성 요인이 만족도에 유의한 영향을 미치는지 가설검증을 실시한다. 연구가설은 다음과 같다. HI: 패밀리 레스토랑의 선택속성요인은 고객의 만족도에 유의한 영향을 미칠 것이다. H2: 패스트푸드 레스토랑의 선택속성요인은 고객의 만족도에 유의한 영향을 미칠 것이다. 가설 검증 결과 가설 1, 2는 모두 부분적으로 채택되었다. 본 연구 결과를 통하여 패밀리 레스토랑과 패스트푸드 레스토랑 경영자들은 마케팅적 시사점을 얻을 수 있을 것으로 기대되며, 극심한 경쟁환경을 극복할 대안을 탐색하고, 후속연구를 위한 기초자료를 획득할 수 있을 것으로 판단된다.

• Genomics & Informatics
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• 제13권4호
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• pp.137-145
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• 2015

Selective sweep can cause genetic differentiation across populations, which allows for the identification of possible causative regions/genes underlying important traits. The pig has experienced a long history of allele frequency changes through artificial selection in the domestication process. We obtained an average of 329,482,871 sequence reads for 24 pigs from three pig breeds: Yorkshire (n = 5), Landrace (n = 13), and Duroc (n = 6). An average read depth of 11.7 was obtained using whole-genome resequencing on an Illumina HiSeq2000 platform. In this study, cross-population extended haplotype homozygosity and cross-population composite likelihood ratio tests were implemented to detect genes experiencing positive selection for the genome-wide resequencing data generated from three commercial pig breeds. In our results, 26, 7, and 14 genes from Yorkshire, Landrace, and Duroc, respectively were detected by two kinds of statistical tests. Significant evidence for positive selection was identified on genes ST6GALNAC2 and EPHX1 in Yorkshire, PARK2 in Landrace, and BMP6, SLA-DQA1, and PRKG1 in Duroc. These genes are reportedly relevant to lactation, reproduction, meat quality, and growth traits. To understand how these single nucleotide polymorphisms (SNPs) related positive selection affect protein function, we analyzed the effect of non-synonymous SNPs. Three SNPs (rs324509622, rs80931851, and rs80937718) in the SLA-DQA1 gene were significant in the enrichment tests, indicating strong evidence for positive selection in Duroc. Our analyses identified genes under positive selection for lactation, reproduction, and meat-quality and growth traits in Yorkshire, Landrace, and Duroc, respectively.

• 한국사회정책
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• 제20권3호
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• pp.9-46
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• 2013

사회보장법에 나타나는 위임의 정도는 의회의원후보공천방식과 의회상임위원회제도의 운영방식과 관련이 있다. 위임이 적은 사회보장법 구조는 상향식 공천방식과 지속적으로 임기를 보장하는 상임위원회제도와 친화적이다. 독일과 같이 당원이 연방의원후보를 결정하는 과정에서 중요한 역할을 하는 상향식 공천방식과 지속적인 임기를 보장하는 상임위원회제도는 위임이 적은 독일의 사회법과 친화성을 갖는다. 반면에 위임이 많은 사회보장법 구조는 하향식 공천방식과 지속적인 임기를 보장하지 않는 상임위원회제도와 친화적이다. 우리나라와 같이 국회의원후보자를 중앙당에서 주도적으로 결정하는 하향식 공천방식과 지속적인 임기를 보장하지 않는 상임위원회제도는 위임이 많은 우리나라의 사회보장법과 친화성을 갖는다.

• 대한전자공학회논문지
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• 제4권4호
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• pp.19-21
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• 1967

Cyclic prime implicant table에서 basis row를 선정하는 방법을 제시하였다. 이 방법은 존래의 시행착오법에 비하면 훨씬 통계적이고 유효하고 또한 이 방법에 의한 결과는 Gimpel이나 Luccio의 방법에 의한 결과와 잘 부합한다.

• 경영과학
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• 제20권2호
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• pp.151-163
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• 2003

Although there has been growing interests in outsourcing the logistics sectors in the industry, not much research was undertaken to provide the processes and standards in choosing the right 3PL for the company. In this research, we attempt to provide the 3PL selection criteria and its priority orders. We surveyed and interviewed the various industry experts and analyzed results using Analytic Hierarchy Process(AHP). The study reveals that manufactures and logistics companies have different understanding of the selection criteria and priorities in outsourcing the 3PL.

• 대한가정학회지
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• 제36권11호
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• pp.209-218
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• 1998

The purpose of this study was to conduct the review of female labor suply, and thus, to provide useful theoretical and empirical frameworks for future studies related to female labor supply. Based on the theory of the allocation of time, the process of individual labor supply was systematically reviewed. Participation Probit/Logit, Tobit, and Selection B;ias Corrected Regression were considered in estimating the function of female labor supply which modifies the selection bias. Based on the previous empirical results, wage rate, asset income, husband's income, the level of eduction, and child-related variables such as the presence of child and the number of children might be considered for the empirical specification of female labor supply.

• 충청수학회지
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• 제33권1호
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• pp.103-112
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• 2020

This paper investigates the portfolio selection problem with flexible labor choice and stochastic income flow where the unit wage flow is governed by a stochastic process. The agent optimally chooses consumption, investment, and labor supply. We derive the closed-form solution by applying a martingale method even with the stochastic income flow.

• 산업경영시스템학회지
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• 제18권36호
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• pp.341-348
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• 1995

The AHP is a good methodology for the multicriterion decision-making process such as nuclear fuel cycle technology selection, which requires consideration of international circumstances, social factors, economic factors as well as technological factors. This paper presents the prioritization of technologies using AHP at back-end fuel cycle development strategy and it would be useful for the national nuclear development planners.