• Journal of Information Technology Applications and Management
• /
• v.26 no.3
• /
• pp.19-27
• /
• 2019

In this study, we propose a methodology for predicting the movie audience based on movie information that can be easily acquired before opening and effectively distinguishing qualitative variables. In addition, we constructed a model to estimate the number of movie audiences at the time of data acquisition through the configured variables. Another purpose of this study is to provide a criterion for categorizing success of movies with qualitative characteristics. As an evaluation criterion, we used information gain ratio which is the node selection criterion of C4.5 algorithm. Through the procedure we have selected 416 movie data features. As a result of the multiple linear regression model, the performance of the regression model using the variables selection method based on the information gain ratio was excellent.

• Journal of the Korea Society of Computer and Information
• /
• v.20 no.7
• /
• pp.49-56
• /
• 2015

In this paper, we introduce recent cloud system security technologies categorizing them according to Reliability, Availability, Serviceability, Integrity, and Security (RASIS), terms that evaluate robustness of the computer system. Then we describe examples of security attacks and corresponding security technologies for each of them. We introduce security technologies based on Software Defined Network (SDN) for Reliability, security technologies based on hypervisor and virtualization for Availability, disaster restoration systems for Serviceability, authorization and access control technologies for Integrity, and encryption algorithms for Security. We believe that this paper provide wise view and necessary information for recent cloud system security technologies.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
• /
• 2003.05a
• /
• pp.658-661
• /
• 2003

The transmission loss coefficient is very important acoustic property in parallel with absorption and acoustic impedance categorizing the acoustical materials, which can control the acoustical problems. At the same time, the transmission loss coefficient is a key parameter to choose the optimum material for the analysis of acoustical characteristics of material using SEA(Statistical Energy Analysis). In this paper, the transmission loss coefficient measurement system using 4-microphone impedance tube is proposed, based on the idea calculating the full transfer matrix of the acoustical sample to test. The theoretical background and measurement system are introduced, and finally the measurement results are verified.

• Journal of the Korea Safety Management & Science
• /
• v.9 no.1
• /
• pp.9-21
• /
• 2007

There may be several factors influencing the safety performance of railway safety personnel. These include human psychological and physiological states, physical conditions about working environment, and workers' stress and fatigue etc. Some researches indicate that human personality is close connection with human error. This study focuses on the workers' personality which is one of psychological traits of railway safety personnel. Thus, we survey and analyze it for railway safety personnel-locomotive engineers, station employees, and train commanders-in Korean railway company. Through the survey that is designed to investigate eight safety personality factors from the questionnaires composed of seventy eight questions, we study the workers' personality factors related to railway safety according to affiliated offices, operations, age, and working years. Finally, after categorizing survey results into sixty six patterns, we explain an example to show a corresponding worker to the pattern result.

• Journal of the Korean housing association
• /
• v.18 no.6
• /
• pp.1-13
• /
• 2007

The purpose of the study was to identify the housing plan responding to lifestyles of residents living in Center of Ulsan city. A total of 230 date sets were analyzed after collecting questionnaire from 284 households using convenient sampling method. For date analysis, descriptive statistics. cross analysis, One-Way ANOVA, factor analysis, cluster analysis were performed by SPSS program. The research centered on the possibility of categorizing lifestyles of residents based upon their living awareness. The results showed that there are four major categorizes of residents's lifestyles. According to classification of their lifestyles, This study tried to analyse the characteristics of residents based upon the characteristics of the households, housing satisfaction. The analysis instrument of the lifestyle concept will be useful to develop the new strategies and to plan the new multi-family houses.

• Journal of the Korean housing association
• /
• v.18 no.2
• /
• pp.75-82
• /
• 2007

Under the premise that the housing market is not fixed, but changes organically according to social and systematic environment, it has important meaning as the object of this study to identify the recent housing market's movement by deducing the changed characteristics of the factors to compose the recent new houses. By using the following methodology, this study analyzed the characteristics and mutual relations of the economical and house-composing factors, categorized the investigation object into sub-markets, and executed comparative analysis. First, based on the leading studies analyzing the factors of house price determination and the assessment indicators of 'Green Building Certification Program', the composing factors are deduced. Second, the factors are categorized as economic, housing complex planning and geographical condition. Third, to identify the influence of housing environmental factors on economic factors, the correlation between the former and the latter, and the difference between economic factors are analyzed. Fourth, by segmenting and categorizing the housing market into time and location subgroups, the chronicle trend and the geographical characteristics are analyzed.

• Journal of the Korea Institute of Building Construction
• /
• v.8 no.3
• /
• pp.119-125
• /
• 2008

The volume of material and number of workers mobilized has been on the rise in line with the domestic projects getting higher, larger and complex currently. Particularly for the project in downtown, delivering the resources in timely manner is very crucial in carrying out the overall project as scheduled. Inappropriate lifting plan often causes inefficiency over the entire project, resulting in increase in schedule and cost. Despite of such importance of lifting plan for architectural work, lifting plans at the most of domestic projects, except a few cases for large scale high-rise buildings, have been heavily dependent on engineer's personal experience and intuition alone. To deal with such problems, the study was intended to develop and suggest a systematic and objective process for determining the lift, categorizing the lifting equipment into the two types, one for workers and another for material.

• International Journal of Costume and Fashion
• /
• v.8 no.2
• /
• pp.11-19
• /
• 2008

Materials from the 1960's such as pearl, glitter, paper, vinyl, and metal are being used identically in modern make-up, communicating various messages as creative works of art incorporating design-related factors of expression which are difficult to express generally, three-dimensional factors of decorative effects, and symbolic factors considering cultural aspects. The present study investigates the futurism apparent in 1960's fashion and art, and aims to observe how the materials used in 1960's futurism are expressed in modern make-up. This was performed by collecting and analyzing data, mostly from related thesis dissertations, fashion centered magazines, and internet sites. Results were analyzed in terms of a figurative perspective on the characteristics of futurist make-up, categorizing it into aspects of form, color, and texture, yielding the conclusion that modern make-up has been consummated as a form of creative art.

• Journal of the Korea Society of Computer and Information
• /
• v.22 no.1
• /
• pp.33-40
• /
• 2017

In this paper, we introduce commercial indoor navigation systems being deployed and serviced in many fields of industry focusing on their indoor positioning technologies. Indoor positioning technology is a technology that locates people or targets in the interior of a building. To do that, it utilizes radio waves such as WiFi, and bluetooth, magnetic fields, or other sensory information from smart phones. We present indoor navigation systems categorizing them into their indoor positioning technologies. We define important performance issues for indoor positioning technologies and analyze them according to the performance issues. We believe that this paper provide wise view and necessary information for recent indoor navigation systems.

• International Journal of Advanced Culture Technology
• /
• v.8 no.2
• /
• pp.204-208
• /
• 2020

The purpose of this study is to find out the teacher's awareness and needs for early childhood mathematics education and outdoor movement activities. The study participants were eight kindergarten teachers located in Korea. in-depth interviews were conducted with teachers on 2014.04. ~ 2014.07. Interviews were held twice each, semi-structured with the order and content of the questions adjusted. As a result of analyzing and categorizing the collected data, the results were 'Early teacher's awareness of mathematics education', 'Early teacher's awareness of outdoor movement activities', and 'Educational teacher's awareness of mathematics activities linked to outdoor movement activities'. The conclusions of this study are as follows. First, the model of early childhood teacher for mathematics education and outdoor movement should be presented. Second, there is a need for ways to improve the teacher's confidence in mathematics education and outdoor movement.