• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• v.32 no.2
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• pp.79-81
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• 2021

The film "The World of Us (2016)" shows the acquisition and loss of friendship that occur in the process of interpersonal shifts in latency school girls. Connection to the peer group helps compensate for the latency child's loss of parent-child intimacy and the ensuing feelings of loneliness. The protagonists realize that the relationship is not for retaliation or for victory, but for playing together. However the reality that lies in front of them will not be so easy. Watching this film reminds one of childhood.

• ETRI Journal
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• v.45 no.4
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• pp.713-723
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• 2023

Game bots are illegal programs that facilitate account growth and goods acquisition through continuous and automatic play. Early detection is required to minimize the damage caused by evolving game bots. In this study, we propose a game bot detection method based on action time intervals (ATIs). We observe the actions of the bots in a game and identify the most frequently occurring actions. We extract the frequency, ATI average, and ATI standard deviation for each identified action, which is to used as machine learning features. Furthermore, we measure the performance using actual logs of the Aion game to verify the validity of the proposed method. The accuracy and precision of the proposed method are 97% and 100%, respectively. Results show that the game bots can be detected early because the proposed method performs well using only data from a single day, which shows similar performance with those proposed in a previous study using the same dataset. The detection performance of the model is maintained even after 2 months of training without any revision process.

• Journal of the Korean Society of Radiology
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• v.15 no.6
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• pp.891-897
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• 2021

With the development of Amyloid PET Tracer, the accuracy of Alzheimer's diagnosis can be improved through the identification of beta-amyloid neurites. However, the long image acquisition time of 20 minutes can be difficult for the patient. PET/CT scans are sensitive to patient movement and may partially affect test results. In this study, we studied the proper image acquisition time without affecting the quantitative evaluation of the image through the list mode acquisition method according to the time of the distribution of radioactive drugs in the body. The list mode includes information about time compared to the existing frame mode, and it is easy to analyze data because it can reconstruct images about the time that researchers want. The research method obtained a reconstructed image by time using a list mode of 5min frame/bed, 10min frame/bed, 15min frame/bed, and 20min frame/bed to compare the difference between signal-to-pons take ratio (SNR) and lesion-to-pons uptake ratio (LPR) and the difference in reading time to obtain an appropriate image. As a result of quantitative analysis, when measuring in list mode, SUVmean values decreased in 6 regions of interest as the image acquisition time increased, but showed the largest difference in 5 min/bed images, followed by 10 min/bed and 15 min/bed. As a result, the difference in SUVmean values decreased. Therefore, it was found that SUVmean values at 15 min/bed did not differ enough to not affect image evaluation. There was no difference in LPR values. As a result of the qualitative analysis, there was no change in the reading findings according to the PET image acquisition time and there was no significant difference in the qualitative analysis score of the image reconstruction according to time. As a result of the study, there is no significant difference between 15 min/bed and 20 min/bed images during the ¹⁸F-flutemetamol PET/CT test, so it can be said that it is clinically useful to reduce the image acquisition time selectively using 15 min/bed via list mode depending on the patient's condition.

• The Journal of the Korea institute of electronic communication sciences
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• v.11 no.2
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• pp.229-236
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• 2016

The objectives of this study are to suggest useful directions for promotion of SNS tourism information service to the service providers through investigating the effect relationship between SNS tourism information service quality and the information sharing intention. To achieve the objectives, as a conceptual framework of the study, the literature on SNS tourism information service quality and information sharing intention were reviewed, and the empirical studies on the perception of the service users about the services was conducted. The findings showed that the 'easy acquisition' and 'interactivity' factors of SNS tourism information service quality have an effect on the information sharing intention. Accordingly, the service providers are required to enhance the service quality related to the information acquisition and interaction between users.

• Journal of muscle and joint health
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• v.26 no.3
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• pp.223-231
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• 2019

Purpose: This study aimed to design user interfaces of a mobile application for managing pressure injury patients in a long-term care hospital based on the user's needs. Methods: To reflect users' needs in the mobile application, the user interfaces in this study were designed in five steps: brainstorming and mind mapping, persona and scenario, needs list and priority, a draft version of flow chart and user interfaces and expert review. These steps were conducted with a step nurse at a long-term care hospital, a professor who majored in nursing informatics, a professor who had lots of research experiences about pressure injury and a wound ostomy continence nurse. Results: Two personas, scenarios and needs' lists were derived. Listed Needs included the followings; Accurate staging of pressure injury; Appropriate management by staging; Acquisition of professional knowledge about pressure injury; Acquisition of easy pressure injury information through text, picture and video; and Sharing pressure injury information in unit. The structure, menus and features of the pressure injury mobile application were visualized with user flow based on two personas' scenarios and needs' lists. Conclusion: Our study suggests and visualizes the key features of the 'Pressure Injury Guide', a pressure injury management mobile application for nurses in a long-term care hospital, which can be utilized by nurses, application developers, and related researchers.

• Journal of Information Management
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• v.26 no.2
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• pp.80-110
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• 1995

This study was carried out to analyze different types of information services to industries, provided by the Technical Information Department of government-supported research institutes. Today, demands on information of new technology have been rapidly increased with the expansion of information mind in enterprises. Managers, specially in profit organizations, are hunting for the technological information since they recognize that acquisition of information is directly connected with the success of business and technological innovation. However, it is not easy for them to get appropriate information due to such factors as competition, information blocking among profit organizations, shortage of holding library, etc. The roles of SciTech libraries can be divided into two parts; the first one is to promote information exchange among organizations, and the second one to supply users with proper information, processed and analyzed by the specialists. In this study, fifteen Technical Information Department of government-supported research institutes are surveyed to investigate their information services to industries. The results of survey show that their services are not enough to support industries successfully.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.16 no.1
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• pp.41-50
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• 1998

The object positional data in the form of digital imagery is processed and stored and is updated easily. The GPS, positioning system using satellites, is acquired its utilities in many parts because it is very easy to get the three dimensional coordinates using GPS around the world. For the effective acquisition of positional data to-ward objects in space, the automation of digital photogrammetry must be done and data acquisition and processing should be performed in real-time. In this study, the program is developed for automatic process of digital photogrammetry and the VAN that has CCD cameras and GPS receivers onboard is built for mobile positioning system. Also, the three dimensional positioning toward 20 objects which are vertical to the ground is done using left and right imagery of CCD cameras and GPS. For a base research in real-time photogrammetry, the three dimensional positioning is performed using continuous imagery and GPS and the three dimensional positioning accuracy is analyzed.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.6
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• pp.4108-4114
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• 2015

An image acquisition by using an optical mirror is called as a catadioptric method. The catadioptric imaging method is generally used for acquisition of 360-degree all directional visual information in an image. An exemplar omnidirectional optical mirror is the bowl-shaped hyperbolic mirror. In this paper, a single camera omnidirectional stereo imaging method is studied with an additional concave lens. It is possible to obtain 3 dimensional coordinates of environmental objects from the omnidirectional stereo image by matching the stereo image having different view points. The omnidirectional stereo imaging system in this paper is cost-effective and relatively easy for correspondence matching because of consistent camera intrinsic parameters in the stereo image. The parameters of the imaging system are extracted through 3-step calibration and the performance for 3-dimensional coordinates reconstruction is verified through experiments in this paper. Measurable range of the proposed imaging system is also presented by depth-resolution analysis.

• The Journal of the Korea Contents Association
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• v.11 no.10
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• pp.234-241
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• 2011

The recent technology boom has created a new digital age. With the help of information technology consumers can have more power than ever and they use digital contents more than ever. This study relates consumer attitude to the recent digital contents using behavior about digital file-sharing. Through the use of the multimethod approach, we identify four characteristics can affect illegal digital contents using behavior. The methodology used was to take in depth look at the consumer with phenomenology as a qualitative research. We select 6 participants who have experience of digital content using. We also examine the structural configurations of the relationship between digital contents characteristics and illegal downloading intention. We surveyed 200 people who also had experience of digital content. This research gives theoretical and practical implication to the marketers related to online communication.

• Journal of the Korean Geotechnical Society
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• v.23 no.11
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• pp.27-37
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• 2007

Downhole seismic method is very economic and easy to operate because it uses only one borehole and simple surface source to obtain the shear wave velocity profile of a site. In this study, automatic shear wave source was developed for efficient downhole seismic testing. This source is motor-spring type and easy to control. It can lessen the labor of operator and the working time. Moreover, it can provide better and repetitive signals for data interpretation. By combining developed automatic source with automatic receiver system, PC based data acquisition system, advanced managing program, and semi-automatic downhole performing system were constructed. Through comparison test with manual source, advantages of automatic source were verified. Constructed semi-automatic downhole testing system including automatic shear wave source was applied to the soft soil site. The applicability and reliability were verified and the importance of automating testing system for obtaining reliable result was emphasized.