• 응용통계연구
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• 제22권1호
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• pp.115-127
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• 2009

The purpose of statistical analyses of array-CGH experiment data is to divide the whole genome into regions of equal copy number, to quantify the copy number in each region and finally to evaluate its significance of being different from two. Several statistical procedures have been proposed which include the circular binary segmentation, and a Gaussian based local regression for detecting break points (GLAD) by estimating a piecewise constant function. We propose in this note a penalized spline regression and its simultaneous confidence band(SCB) approach to evaluate the statistical significance of regions of genetic gain/loss. The region of which the simultaneous confidence band stays above 0 or below 0 can be considered as a region of genetic gain or loss. We compare the performance of the SCB procedure with GLAD and hidden Markov model approaches through a simulation study in which the data were generated from AR(1) and AR(2) models to reflect spatial dependence of the array-CGH data in addition to the independence model. We found that the SCB method is more sensitive in detecting the low level copy number alterations.

• 한국정보시스템학회지:정보시스템연구
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• 제20권2호
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• pp.109-134
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• 2011

The purpose of this paper is to present an overview of the characteristics of the e-sports business at a crucial point in the era of information and knowledge. That is, an investigation was conducted surrounding the key success factors of e-sports as a newly growing industry, and the relationship between the key success factors and the usage effect. In order to do this, the key success factors were extracted from interviews with e-sports experts in conjunction with a survey that was conducted to gather empirical data. The key points of the statistical analysis of the survey are as follows. First, the success factors of a policy do not have a significant effect on the usage. Second, some administrative success factors of the e-sports business include the distribution of e-sports in the form of franchise chain, the establishment of policies to prevent the excellent members of e-sports from seceding, making a good impression as a high-class sport, the frequent notice of the break-even point, and educating people on how to use the e-sports machine. Third, the development and distribution of excellent e-sports software was analyzed as a technical success factor of the e-sports business. Finally, there is no doubt that results of this study can be used to facilitate the growth of the e-sports business as a new industry related to the IT industry.

• Structural Engineering and Mechanics
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• 제20권3호
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• pp.313-334
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• 2005

The paper presents a new approach for the analysis of slope stability that is based on the numerical solution of a differential equation, which describes the thrust force distribution within the potential sliding mass. It is based on the evaluation of the thrust force value at the endpoint of the slip line. A coupled approximation of the slip and thrust lines is applied. The model is based on subdivision of the sliding mass into slices that are normal to the slip line and the equilibrium differential equation is obtained as the slice width approaches zero. Opposed to common iterative limit equilibrium procedures the present method is straightforward and gives an estimate of slope stability at the value of the safety factor prescribed in advance by standard requirements. Considering the location of the thrust line within the soil mass above the trial slip line eliminates the possible development of a tensile thrust force in the stable and critical states of the slope. The location of the upper boundary point of the thrust line is determined by the equilibrium of the upper triangular slice. The method can be applied to any smooth shape of a slip line, i.e., to a slip line without break points. An approximation of the slip and thrust lines by quadratic parabolas is used in the numerical examples for a series of slopes.

• 건축역사연구
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• 제21권6호
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• pp.63-76
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• 2012

Modern railway construction by Japanese had a great influence on the urbanization, transformation of urban structure and landscape during the Japanese imperialism and compressive increasing period in Iri(Iksan). This paper aims to find out the effect of railway on the modern urban structure and urban landscape in Iri(Iksan). Railways in Iri, Honam railway, Kunsan railway, Jeonla railway have been constructed progressively during 1911 and 1915 with Iri and old Iri(east-Iri) station. From the analysis of land registration maps and street plans, old photographies and historical records, some significant features underling railway construction can be followed in view of modern urbanization process in Iri. Firstly railways cut off the possibility of developing urban structure based on traditional spatial structure of Iksan. Secondly railways made dual spatial structure in Iri. Japanese and Korean life zone were divided into separate district around urbanization area and market place. Thirdly traditional space cognition system based on four cardinal directions were changed to front and rear space of railway station. Fourthly railways and stations caused neo-baroque spatial order and imperialistic urban landscape of Iri with axis, vista and gridiron plan. Fifthly break points and fringe belts garbling modern urbanization process are created. Sixthly modern cultural and consumptive urban spaces were taken their seats in relation with daily urban life.

• 한국식품영양학회지
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• 제6권3호
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• pp.178-188
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• 1993

This research was attempted to investigate changes in physicochemical properties of rice extrudate with added ginger powder extruded by single screw extruder. Graphic three dimensional analysis on response surface regression was used to evaluate effects of extrusion variables on quality factors of the extrudate according to two independent variables, ginger consent 0∼12%, moisture content 14∼26%. The summarized results are as follows : 1) Regarding proximate composition of rice extrudate with added ginger powder, as ginger powder content of raw material Increased, crude tat, crude protein, crude ash and crude fiber increased, while soluble nitrogen free extract decreased. 2) Graphic three dimensional analysis on response surface regression was conducted for each dependent variable which revealed statistically significant relationship with independent variables, 0∼120A ginger and 14∼26% moisture content. Expansion ratio had a critical point as moisture content changed. As ginger and moisture content Increased, bulk density, break strength and water absorption Index Increased, while water solubility Index decreased. The predicted maximum degree of gelatinization in 6.15% ginger and 15.56% moisture content is 88.27%, and lightness decreased as ginger content Increased. According to the microstructure for the cross section of extrudate obsorbed with image analyzer, air cell number and perimeter revealed saddle point, meanwhile total area and fractarea of air cell had critical points as moisture content changed. In view of the results, quality of rice extrudate with added ginger powder was optimum when rice flour was fed to the extruder with 2∼7% singer powder and 15∼20% moisture content.

• 대한공간정보학회지
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• 제8권1호
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• pp.73-84
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• 2000

차량용 자동 항법장치가 실생활에 적용됨에 정확한 자동차의 위치를 표현하기 위해서 맵매칭 기술에 대한 중요성은 더욱 부각되고 있다. 맵매칭 기술은 GPS의 오차, 수치지도의 오차 등으로 발생하는 오류를 극복하기 위한 과정으로서 자동 항법시스템은 물론 기타 관련분야인 GPS영역등에도 반드시 필요한 기술중의 하나이다. 그러나, 지금까지 맵매칭에 대한 기술을 정확하기 구분하여 기술하거나 가장 적합한 알고리즘을 제시하지 못하고 있는 바, 본 논문에서는 그 동안 개발된 많은 맵매칭 기술에 대하여 크게 지형정보와 위상구조를 토대로 2가지 유형으로 구분하여 각 기술별 문제점과 개선 방안을 소개하였다 더 나아가, 최근 미국 전부의 주도로 SA(Selective Availability) 개념이 사라짐에 따라, 쉽게 적용할 수 있는 간단한 형태의 맵매칭 알고리즘을 제시하였고, 향후의 응용방안에 대하여 간단히 언급하였다.

• Child Health Nursing Research
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• 제13권4호
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• pp.427-435
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• 2007

Purpose: This study presents the findings of various research on human intelligence and Multiple Intelligence Theory and suggested the implications of Multiple Intelligence Theory-based approach to the nursing education for the ill children. Method: Research objectives were accomplished by conducting a literature review. The main areas of the literature review included the Multiple Intelligence Theory, and it's application case for the children with learning disorder. Results: Dissatisfaction with traditional IQ tests has led to the development of a number of alternative theories, all of which suggest that intelligence is the result of a number of independent abilities that uniquely contribute to human performance. Among them, Multiple Intelligences Theory led to break intelligence down into at least eight different components: logical, linguistic, spatial, musical, kinesthetic, naturalist, intra-personal and interpersonal intelligences. In addition, Multiple Intelligence Theory and it's application case believes that every topic can be effectively taught and achieved using six entry points framework. Conclusions: The educational implications of Multiple Intelligence Theory in view of the health education and education in the children's hospital school should be considered for the ill children2's better education in a hospital setting.

• Safety and Health at Work
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• 제8권4호
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• pp.402-406
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• 2017

Transit workers constitute a blue-collar occupational group that have elevated smoking rates relative to other sectors of employed adults in the United States. This study analyzed cross-sectional tobacco survey data from 935 workers (60% African American; 37% female) employed at an urban public transit agency in California. Prevalence of current and former smoking was 20.3% and 20.6%, respectively. Younger workers were less likely than older workers to be current or former smokers. Having a complete home smoking ban was associated with decreased likelihood of being a smoker [odds ratio (OR) = 0.04, 95% confidence interval (CI) = 0.01-0.17], as were neutral views about whether it is easy for a smoker to take a smoking break during their shift (OR = 0.50, 95% CI 0.28-0.88). Current smoking among the sample is > 50% higher than the adult statewide prevalence. Potential points of intervention identified in this study include perceived ease of worksite smoking breaks and establishing home smoking bans. Tailored cessation efforts focusing on older transit workers more likely to smoke are needed to reduce tobacco-related disparities in this workforce.

• International Journal of Computer Science & Network Security
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• 제21권7호
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• pp.317-323
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• 2021

Social media is increasingly becoming a part of our daily life for communicating each other. There are various tools and applications for communication and therefore, identity theft is a common issue among users of such application. A new style of identity theft occurs when cybercriminals break into WhatsApp account, pretend as real friends and demand money or blackmail emotionally. In order to prevent from such issues, data mining can be used for text classification (TC) in analysis authorship attribution (AA) to recognize original sender of the message. Arabic is one of the most spoken languages around the world with different variants. In this research, we built a machine learning model for mining and analyzing the Arabic messages to identify the author of the messages in Saudi dialect. Many points would be addressed regarding authorship attribution mining and analysis: collect Arabic messages in the Saudi dialect, filtration of the messages' tokens. The classification would use a cross-validation technique and different machine-learning algorithms (Naïve Baye, Support Vector Machine). Results of average accuracy for Naïve Baye and Support Vector Machine have been presented and suggestions for future work have been presented.

• 한국의류학회지
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• 제29권12호
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• pp.1619-1626
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• 2005

탄성직물의 내구성은 탄성직물에 포함된 스판덱스사의 성질변화가 큰 영향을 미친다. 그러므로 본 연구에서는 세탁조건이 스판덱스사의 길이, 강도와 신도, $300\%$신장 후의 영구탄성 변화에 미치는 영향을 조사하였다. 시료로는 굵기가 다른 스판덱스사와 heat-set 시 신장률이 다른 편성물을 가정용 드림세탁기에서 세탁온도, 세탁 전 침지시간과 세탁휫수를 달리하여 세탁한 후, 편성물로부터 스판덱스사를 분리하여 기계적 성질을 측정하였다 스판덱스사의 길이는 세탁온도가 높아지거나, $40\%$에서 세탁휫수가 증가하면 계속 감소하였으나 세탁 전 침지시간에 따른 영향은 비교적 적었다 섬유가 가늘수록 길이 수축률이 크며 세척 조건변화에 따른 수축률이 크게 증가하였다. 스판덱스사의 강도와 신도는 반복 세척 시의 감소가 뚜렷하였으며, heat-set 시에는 강도와 신도도 크게 감소하였고, heat-set 시에 가해준 신장률이 클수록 감소가 더 컸다. 한편 스판덱스사의 영구변형률은 세탁온도가 높으며, 침지시간이 길고, 세탁횟수가 많을 때 현저히 높았다. 대체적으로 굵은 스판덱스사의 영구변형률이 크며, 140D는 30회 세척 후에 $28.0\%$의 영구변형 이 일어났다. Heat-set로 스판덱스사의 영구변형은 늘어나며, heat-set 시에 신장률이 큰 스판덱스사의 영구변형이 더 많았다. DSC 열분석 곡선에서 스판덱스 섬유는 반복 세탁과 heat-set여부와 관계없이 동일한 융해온도를 나타내었으며, 이로부터 스판덱스 섬유의 hard segment분자쇄 길이는 세탁 또는 heat-set후에도 변화가 없는 것으로 보여진다.