• Journal of Digital Convergence
• /
• v.13 no.6
• /
• pp.39-53
• /
• 2015

The purpose of this study is to consider the effect of the volunteer participation motivation of the elderly on the convergence formation of the social capital. This study is based on the quantitative research of 390 older adults who have participated on the volunteer programs run by welfare center and culture center for the elderly at Incheon area. The results are as follows. First, social responsibility and self-realization (independent variables) have effect on social trust(dependent variable). Second, self-realization(independent variable) has effect on social participation(dependent variable). Third, but social activity(independent variables) have not effect on social trust and social participation(dependent variable). This study can be use to propose policies related to the social activity for the elder's good life.

• Journal of Broadcast Engineering
• /
• v.25 no.2
• /
• pp.143-150
• /
• 2020

Huge amounts of contents are being uploaded every day on various streaming platforms. Among those videos, game and sports videos account for a great portion. The broadcasting companies sometimes create and provide highlight videos. However, these tasks are time-consuming and costly. In this paper, we propose models that automatically predict highlights in games and sports matches. While most previous approaches use visual information exclusively, our models use both audio and visual information, and present a way to understand short term and long term flows of videos. We also describe models that combine GAN to find better highlight features. The proposed models are evaluated on e-sports and baseball videos.

• Journal of Satellite, Information and Communications
• /
• v.10 no.1
• /
• pp.49-55
• /
• 2015

In cognitive radio network (CRN), spectrum sensing is an elementary level of technology for non-interfering to licensed user. Required sample number for spectrum sensing is directly related to the throughput of secondary user and makes the tradeoff between the throughput of secondary user and interference to primary user. Required spectrum sensing sample is derived from required false alarm, detection probability and minimum required SNR of primary user (PU). If we make clustering and minimize the required transmission boundary of secondary user (SU), we can relax the required PU SNR for spectrum sensing because the required SNR for PU signal sensing is related to transmission range of SU. Therefore we can achieve efficient throughput of CRN by minimizing spectrum sensing sample. For this, we design the tradeoff between gain and loss could be obtained from clustering, according to the size of cluster members through game theory and simulation results confirm the effectiveness of the proposed method.

• Journal of Internet Computing and Services
• /
• v.15 no.1
• /
• pp.63-71
• /
• 2014

Currently many non-traditional application areas such as artificial intelligence and web databases require advanced modeling power than the existing relational data model. In those application areas, object-oriented database (OODB) is better data model since an OODB can providemodeling power as grouping similar objects into class, and organizing all classes into a hierarchy where a subclass inherits all definitions from its superclasses. The purpose of this paper is to develop an OODB concurrency control scheme dealing with multiple inheritance. The proposed scheme, called Multiple Inheritance Implicit Locking (MIIL), is based on so-called implicit locking. In the proposed scheme, we eliminate redundant locks that are necessary in the existing implicit locking scheme. Intention locks are required as the existing implicit locking scheme. In this paper, it is shown that MIIL has less locking overhead than implicit locking does. We use only OODB inheritance hierarchies, single inheritance and multiple inheritance so that no additional overhead is necessary for reducing locking overhead.

• Korean Journal of Cognitive Science
• /
• v.20 no.2
• /
• pp.155-181
• /
• 2009

Psychophysiologists are often interested in the EEG signals that accompany certain psychological events. When one is interested in a time series of event-related changes in EEG, one focuses on examining how the waveforms recorded at individual electrode sites vary over time across one or more experimental conditions. This is an analysis of event-related potentials (ERPs). In addition to such a classical EEG analysis in the time domain, the EEG measures can be investigated in the frequency domain. Moreover, it has been demonstrated that spectral analyses can often yield significant insight into the functional cognitive correlations of the signals. Therefore, this review paper tries to summarize essential concepts (e.g. phase-locking) and conventional methods (e.g. wavelet transformation) for understanding spectral analyses of brain oscillatory activity. Phase-coherence is also introduced in relation to functional connectivity of the brain.

• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.15 no.1
• /
• pp.257-263
• /
• 2011

Recently as AR(Augmented Reality) is focus of attention, AR is applied to various fields and is expected its valuable use. In this paper, we implemented the system based on Goblin XNA which supports high resolution model file and higher AR. We confirmed the relation of model output among the number of marker, the location and changes of camera distance. And we produced the infantile studying contents using AR and embodied. In implemented contents, we showed the familiar character to infants on each page marker. As the result of it, we can raise their concentration and at a time studying supporters can use the contents easily as well. Also we put 3 marker on each page of contents to recognize it smoothly in case one part of it is hidden by any obstacle. Finally we maximized the learning effect such as presence and immersion in studying through reinforcing 3D models according to the every situation.

• Journal of Digital Convergence
• /
• v.12 no.11
• /
• pp.33-48
• /
• 2014

The purpose of this study was to investigate the relationships among the work satisfaction and quality of life with retirement preparation of middle-aged workers. Data from 283 subjects were collected and analyzed. The findings are as follows. First, people with higher quality of life tend to care more on health planning. Second, financial planning has nothing to do with quality of life, whereas self-respect has a positive effect on all the other indicators for retirement preparations except financial planning. Third, retirement preparations has not been affected by work satisfaction. The theoretical and practical implications of the findings were discussed and the directions for future research were suggested.

• Informatization Policy
• /
• v.25 no.3
• /
• pp.52-74
• /
• 2018

In February 2018, the Korean government established the "Comprehensive Plans for Government Innovation" in order to realize 'the people-centered government'. The core of the comprehensive plans is participation of the people, which is very similar to open innovation where social issues are solved by ideas and capabilities of the private sector rather than those of the government. Therefore, this study was conducted by extracting open innovation topics through topic modeling based on LDA(Latent Dirichlet Allocation) as English abstract-data from 2003, when the plans for open innovation was first announced, to April 2018. Based on the extracted results, it also conducted a comparative analysis with "Comprehensive Plans for Government Innovation." The study has significant implications in that it derives the relationship between the subjects, analyzes the present policies of Korea on open innovation and suggests directions for development.

• The Journal of the Korea Contents Association
• /
• v.10 no.12
• /
• pp.378-386
• /
• 2010

The concern regarding inability to perform CPR properly was widespread, and few studies, however, have queried bystanders regarding their responses to an actual emergency. This study assessed how often CPR was performed by CPR-trained bystanders and what factors were associated with the performance and nonperformance of CPR by trained bystanders. From a 2,000 sample survey of the National Emergency Medical Center in Korea (2008), it extracted object persons who actually experienced an emergency situation, and examined closely the relationship of CPR education experience and CPR performance in an emergency. 169 completely interviewed, 23(13.6%) had CPR education experience and performed CPR in an actual emergency, 40(23.6%) had CPR education experience but didn't performed, 12 (7.1%) didn't have CPR education experience but performed, and 94(55.6%) neither had CPR education experience nor performed. Specifically, within bystanders who had CPR education experience, those who CPR was performed were different from those who CPR was not on medical emergency-related characteristics such as CPR knowledge(p=0.001), 1339 emergency phone number(p=0.006) and 1339 emergency services(p=0.001). Consequently, to consider social characteristics or an economic condition, various CPR teaching strategies should be prepared to continuously propel.

• Journal of Navigation and Port Research
• /
• v.41 no.6
• /
• pp.381-388
• /
• 2017

Recently, renewed attention for technological applications within the maritime industry has taken place, particularly regarding unmanned vessels. There has been a lot of interest about the number of projects aiming at testing the operational feasibility of unmanned vessels, particularly in relation to technological, safety and security issues. Nevertheless, no studies have investigated this issue from the point of view of seafarers towards unmanned vessels; this paper aims at filling this gap. Data has been collected through a survey questionnaire. A Pearson correlational coefficient has been used to test the correlation between some of the variables. The results show that more than half of the respondents indicated that unmanned vessels do not contribute to an increase in accidents at sea. In addition, seafarers believe unmanned vessels will not be operational in the near future, with most of the respondents indicating a 10-20 year time frame. Thirdly, most of the respondents(both officers and ratings).