• Journal of Korean Society of Water and Wastewater
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• v.26 no.2
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• pp.285-294
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• 2012

Current urban stream conditions and their restoration projects were investigated by surveying the urban stream management experts in 29 cities with high population density (more than 1,000person/$km^{2}$). The survey results showed that the ratio of covered urban streams decreased by 1.4% (from 14% to 12.6%) in the last 5 years through steady river restoration projects promoted by governments. Nonetheless, 36.3% of 369 urban streams surveyed still report stream depletion problems; therefore, more efforts to alleviate the problems caused by distorted water circulation of urban streams are still necessary. Water depletion in many local urban streams, unlike national rivers, is accelerated due to negligence in stream management, budget shortage, and other reasons. To prevent stream depletion, the use of reclaimed water is suggested as one of the prevention plans. When available amounts of reused sewage are estimated through actual available nationwide sewage discharges of each watershed and instream flow of stream, annual instream flow supply of 780 million $m^{3}$ is expected; 4.8% reduction in the pollution load of public sewer treatment facilities is expected; and the creation of new value through water reuse service is expected. Thus, it is important for the reviews of feasibility and alternatives of water reuse projects for flow augmentation to consider not only investment budget reductions, but also environmental aspects. Also it is necessary to provide the financial support of unified government with strict water quality management policy.

• Journal of the East Asian Society of Dietary Life
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• v.21 no.5
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• pp.756-770
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• 2011

This study was conducted on 419 middle school students (214 boys, 205 girls) in order to examine the general aspects, dietary habits, and performance of the school food services available to them in the Chungnam area. The mean age of the subjects was 15.1 years. The average heights and weights were 164.5 cm and 55.6 kg for boys and 158.9 cm and 49.4 kg for girls, respectively. The influence of parents was found to have a significant effect on the students' nutritional knowledge. Exactly 45.1% of subjects said that they needed time for nutritional education, and 54.2% of subjects answered that they have not received any nutritional education. The amount of spending money and expenditures for snacks per month were positively correlated with family income. Breakfast was skipped more than once per week in more than half of all students. Exactly 40.5% of subjects were satisfied with their schools' food services. As food services are more likely to correct unbalanced diets and provide an incentive for change towards better dietary habits, school food services can play a role in correcting unbalanced dietary behaviors.

• The Journal of Society for e-Business Studies
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• v.17 no.1
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• pp.75-90
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• 2012

The aim of this study is to investigate the preferred website's design factors. Social computing is driving a dramatic evolution of the Web these days, and a number of users are increasing every day. But many website designers are just focusing on functional aspects of website. Also, there are few studies regarding the social computing website's emotional design. Proper designs of social computing websites could be designed through investigating the websites design factors preferred by users. Empirical study was conducted in order to investigate websites design factors preferred by users. Website design and user emotion of social computing websites were measured by the questionnaire and 254 people participated. Also, Website design and user emotion of non-social computing websites were measured by same participants, and then comparing results each other. Five design factors and eight emotion factors were derived, and only four out of design factors and three out of emotion factors were found as having significant effects on the satisfaction of social computing website. In addition, different factors in determining user satisfaction when using social computing websites and non-social computing website.

• The Journal of the Korea institute of electronic communication sciences
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• v.15 no.1
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• pp.199-204
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• 2020

With the development of IT. convergence systems are applied and operated in many different fields. A representative field among them is medical service, which develops in diverse types in combination with nano-technology and bio technology. However, there is a lack of technical innovation in terms of medical data operation and management. For example, data and documents are saved and integrated separately depending on their forms when electronic health records or data like SAM files are transmitted or kept. In other cases, such records and data are still kept after being recorded in paper. This study tries to design and implement the EMR system that makes it possible to capsulize forms of data and documents and to digitalize documents in work process as they are in terms of operation and storage. The system is expected to support efficient operation of electronic documents in the aspects of work and management.

• Research in Community and Public Health Nursing
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• v.26 no.2
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• pp.61-68
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• 2015

Purpose: In this study, we performed a comparative analysis on the quality of life (QoL) in male and female chronic obstructive pulmonary disease (COPD) patients based on the 4th Korea National Health and Nutrition Examination Survey (KNHANES IV) from 2007 to 2010. Methods: We extracted the socio-demographic and clinical data of 1,218 COPD patients including 874 men and 344 women from the KNHANES IV database. Descriptive statistics and correlation test were used to analyze the data. In order to find factors associated with QoL of COPD patients, we conducted multivariate linear regression analysis. Results: Infrequency analysis, the educational level and income were lower in the female COPD patients than in the male ones. The QoL indexes including mobility, self-care, activities of daily living, discomfort, anxiety, and depression were significantly worse in the female of COPD patients than in the male ones (p<.01).Conclusion: Our study indicates that QoL of female COPD patients should be improved on the educational, economic, and healthcare aspects.

• The Journal of the Korea Contents Association
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• v.20 no.4
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• pp.86-98
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• 2020

The artificial intelligence (AI) is a technology that will lead the future connective and intelligent era by combining with almost all industries in manufacturing and service industry. Although Korea is one of the world's leading artificial intelligence group with the United States, Japan, and Germany, but its competitiveness in terms of artificial intelligence patent is relatively low compared to others. Therefore, it is necessary to carry out quantitative analysis of artificial intelligence patents in various aspects in order to examine national competitiveness, major industries and future development directions in artificial intelligence technology. In this study, we use the IPC technology classification code to estimate the overall life cycle and the speed of development of the artificial intelligence technology. We collected patents related to artificial intelligence from 2008 to 2018, and analyze patent trends through one-dimensional statistical analysis, two-dimensional statistical analysis and network analysis. We expect that the technological trends of the artificial intelligence industry discovered from this study will be exploited to the strategies of the artificial intelligence technology and the policy making of the government.

• Journal of Korea Society of Industrial Information Systems
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• v.22 no.3
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• pp.19-26
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• 2017

In this paper, a Linear Error Correction Code, Which is Applicable to Next Generation Wireless Communication System Technology, is Constructed Based on Performance Comparison and Transmission Based on the Premise of High Performance Mobile Rate Enhancement System. This is Because Data Rates are Becoming an Important Issue in Reed-Solomon Codes and Linear Error Code (LDPC) Used in the Physical Layer of Digital Communication and Broadcasting Technologies. Therefore, this paper Simulates the Performance of Reed - Solomon Code and LDPC Applied to Mobile Broadcasting DVB (Digital Video Broadcasting) System and Mobile Broadcasting in Digital Communication and Broadcasting, At this time, Technical Aspects of the Transmission Efficiency and Performance of the LDPC Replacing the Existing Reed-Solomon Code have been Verified from the Viewpoint of Efficiency.

• Korean Institute of Interior Design Journal
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• v.27 no.2
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• pp.68-76
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• 2018

A public library is changing into a place where people can freely acquire and make use of information in digital environment with the basic ideology of publicity. In spite of such changes, multimedia center is still biased with the function of computer room to use PC and is not used actively by many users. This study can be summarized and concluded as follows and spatial characteristics of digital data room of public library can make use of space planning elements by aspects as an analysis tool. First, designed characteristics focusing too much on the possession of seats for reading digital data. Therefore, spatial planning for users to choose necessary facilities according to the data they wish to read and type of users is needed. Second, interior tone of multimedia center is applied with identical color for all floors, walls, and ceilings, to create sense of unification. However, due to the arrangement of similar colors, while using identical brightness and chroma, some users felt difficult to realize shape or depth in space. It is more appropriate to apply distinctive color plan according to the characteristic of the data or space region, in order to create pleasant digital environment for visually weaker people or elderly. Third, psychological or technical factors of multimedia center is not sufficiently applied in space planning elements for users. In order for various digital service of public library to be technically implemented, it is necessary to organize open space by expanding the size of multimedia center to utilize high-tech facilities.

• Journal of Digital Convergence
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• v.14 no.10
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• pp.393-398
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• 2016

Stock information applications allow users to look up and find current stock information whenever and wherever. This study researched what kind of user experience the finance experts get when using these applications and what they suggest. The research was conducted through an in-depth interview of 8 finance experts, who worked minimum of three years, and used both Kakao Stock and JeungGwon Tong, the most used stock information applications, for a minimum duration of six months. The results show the user experience of Kakao Stock rated a bit higher than JeungGwon Tong. Since the objective of such applications are to show stock informations, the experts all rated the pleasurable and meaningful aspects rather low. They suggested, the developers should provide a more advanced and accurate information. They also suggested user interest recognized content be presented along with more convenient user interface to elevate usability. Hopefully, this study becomes a base to further study of user experience of various on and offline stock information services and they become a reference to develop a service with great user experience.

• Journal of Broadcast Engineering
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• v.22 no.5
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• pp.600-607
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• 2017

Virtual Reality (VR) has lately gained significant attention primarily driven by the recent market availability of consumer devices, such as mobile phone-based Head Mounted Displays (HMDs). Apart from classic gaming use cases, the delivery of $360^{\circ}$ video is considered as another major application and is expected to be ubiquitous in the near future. However, the delivery and decoding of high-resolution $360^{\circ}$ videos in desirable quality is a challenging task due to network limitations and constraints on available end device decoding and processing. In this paper, we focus on aspects of $360^{\circ}$ video streaming and provide an overview and discussion of possible solutions as well as considerations for future VR video streaming applications. This paper mainly focuses on the status of the standardization activities, Omnidirectional MediA Format (OMAF), to support interoperable $360^{\circ}$ video streaming services. More concretely, MPEG's ongoing work for OMA aims at harmonization of VR video platforms and applications. The paper also discusses the integration in MPEG Dynamic Adaptive Streaming over HTTP (MPEG-DASH), which is considered as $360^{\circ}$ video streaming services with OMAF content. In context of the general OMAF service architecture.