• Journal of the Institute of Electronics and Information Engineers
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• v.52 no.6
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• pp.32-40
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• 2015

In this paper, the optimum antenna placement is analyzed by considering the interference between airborne antennas mounted on the unmanned aerial vehicle(UAV). The analysis is implemented by selecting the antennas that the distance and operational frequency band between airborne antennas is close to each other among the omni-directional antennas. The analyzed antennas are the control datalink, TCAS(Traffic Collision & Avoidance System), IFF(Identification Friend or Foe), GPS(Global Positioning System), and RALT(Radar ALTimeter) antennas. There are three steps for the optimum antenna placement analysis. The first step is selecting the antenna position having the optimum properties by monitoring the variation of radiation pattern and return loss by the fuselage of UAV after selecting the initial antenna position considering the antenna use, type, and radiation pattern. The second one is analyzing the interference strength between airborne antennas considering the coupling between airborne antennas, spurious of transmitting antenna, and minimum receiving level of receiving antenna. In case of generating the interference, the antenna position without interference is selected by analyzing the minimum separation distance without interference. The last one is confirming the measure to reject the frequency interference by the frequency separation analysis between airborne antennas in case that the intereference is not rejected by the additional distance separation between airborne antennas. This analysis procedure can be efficiently used to select the optimum antenna placement without interference by predicting the interference between airborne antennas in the development stage.

• Journal of the Institute of Electronics Engineers of Korea TC
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• v.44 no.1
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• pp.54-61
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• 2007

In this paper, on-demand service streaming protocol for user-created contents in digital cable broadcasting environment is considered. In order to provide variety media contents service like UCC in digital cable broadcasting environment, the same service model as RVOD(Real Video on Demand) is required and the different interface for each broadcasting platform is needed in a current OCAP environment. Using return path based RTP, we separate existing VOD stream band into broadcasting and VOD stream band. In order to broaden On-demand service, consistent expansion of the infrastructure same as live broadcasting system is inefficient in the digital cable broadcasting environment. Using existing network protocol, the service which is insensitive to the infrastructure for VOD service becomes possible. Therefore we considered the analysis of the class of download available structure in the Set-Top-Box for RTP(Real-time Transport Protocol) and designing the decoding available streaming server for UCC transcoding and transmission in the receiver. Designing a efficient VOD service and system under the broadcasting environment gives a expansion of On-Demand service and more chance to upload and utilization of contents.

• Journal of the Institute of Electronics and Information Engineers
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• v.50 no.5
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• pp.83-93
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• 2013

Recently, the SURF algorithm, which is conjugated for object tracking system as part of many computer vision applications, is a well-known scale- and rotation-invariant feature detection algorithm. The SURF, due to its high computational complexity, there is essential to develop a hardware accelerator in order to be used on an IP in embedded environment. However, the SURF requires a huge local memory, causing many problems that increase the chip size and decrease the value of IP in ASIC and SoC system design. In this paper, we proposed a way to design a SURF algorithm in hardware with greatly reduced local memory by partitioning the algorithms into several Sub-IPs using external memory and a DMA. To justify validity of the proposed method, we developed an example of simplified object tracking algorithm. The execution speed of the hardware IP was about 31 frame/sec, the logic size was about 74Kgate in the 30nm technology with 81Kbytes local memory in the embedded system platform consisting of ARM Cortex-M0 processor, AMBA bus(AHB-lite and APB), DMA and a SDRAM controller. Hence, it can be used to the hardware IP of SoC Chip. If the image processing algorithm akin to SURF is applied to the method proposed in this paper, it is expected that it can implement an efficient hardware design for target application.

• Journal of the Korea Convergence Society
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• v.8 no.3
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• pp.79-89
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• 2017

The purpose of this study was to identify convergence factors related to DSMK, social support, and educational needs on the diabetes in rural elderly. The subjects were 115 elderly patients who were registered in diabetes control center, taking medication more than 6 months in U city. The survey period was from August 24 to October 31, 2016. The results showed that DSMK showed significant differences in gender, education level, duration of diabetes, experience of diabetes education, experience of family participation in diabetes education, and perceived health status(p<.05). The degree of social support was found to be significant differences in marital status, diabetes education experience, diabetes education needs, gender, duration of diabetes, and perception of diabetes self-management difficulty(p<.05). There were significant positive correlations between DSMK and social support, social support and educational needs(p<.05). Based on these results, we hope to develop a convergent self - management program based on the needs of the elderly patients.

• Journal of the Korea Convergence Society
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• v.8 no.3
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• pp.101-114
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• 2017

This is the study of descriptive research to look into influence factors about how married middle-aged male' job stress, job security, depression, family bond, subjective health status and social support have an effect on the quality life. We collected data by giving questionnaires to 149 middle-aged males between the ages of 40 to 49, living B & D metropolitan city and J city, and used the SPSS/WIN18.0 version to analyze. The correlated factors of quality of life included job stress(r=-.544, p<.001), depression(r=-748, p<.001), job security(r=.566, p<.001), subjective health status(r=.537, p<.001), family bond(r=.712, p<.001) and social support(r=.739, p<.001). Factors influencing quality of life are depression, social support, family bond, subjective health status, current employment period and regular exercise. Therefore, a good quality middle-aged life, it will be needed to lower the depression, expand the social support system, improve family bond and subjective health status, increase employment period.

• Journal of the Korea Convergence Society
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• v.8 no.7
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• pp.63-73
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• 2017

The purpose of this convergence study is to confirm the effects of nurses' coaching behavior level and emotional intelligence on organizational effectiveness. Subjects of study were 182 nurse in four general hospitals and they answer self-report questionnaire between March 2nd to March twenty three 2017. and date analyzed using the SPSS/WIN 21.0 program. As a result, coaching behavior level $3.28{\pm}0.42point$, Emotional Intelligence $3.27{\pm}0.45point$ and Organizational commitment $2.89{\pm}0.52point$, Job satisfaction $2.94{\pm}0.53point$, Turnover intention $3.24{\pm}0.56point$ among organizational effectiveness. Organizational commitment was positively correlated with coaching behavior level and emotional intelligence, significantly affecting Convergence Factors on organizational effectiveness were analysed into Experience preceptor(${\beta}=.25$, p=.001), Nursing satisfaction(${\beta}=.26$, p<.001), Coaching behavior level(${\beta}=.26$, p<.001) and the explanation ability was 25%. In order to enhance organizational commitment of nurse, the characteristics of the job is satisfied and if there is an intervention program that improve the level of coaching behavior, it is expected the effectiveness of the organization will be enhanced.

• Journal of the Korea Convergence Society
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• v.9 no.2
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• pp.259-266
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• 2018

Purpose: This study is to investigate the pattern of discomfort, coping style and relief level of female workers. Methods: The subjects were 394 women who worked at three general hospitals located in S city and agreed to the purpose of this study. Data were collected April 20~30, 2010, and one-way ANOVA and Pearson's correlation were performed using descriptive statistics using SAS 9.2. Results: showed that discomfort during menstruation was significantly different from age, marital status, pregnancy experience, and birth experience. The average degree of discomfort during menstruation was $2.46{\pm}0.68$, which was the average of 5, and the pattern was pain, water accumulation and behavior change. The degree of mitigation according to coping strategies was the most effective at $3.55{\pm}0.58$, and the relationship between coping behavior and discomfort during menstruation was correlated only with avoidant coping. p = .001). Conclusion: In order to mitigate the inconvenience of menstruation, women should seek to cope with their own coping strategies rather than passive coping methods and suggest the development of an educational program that can relieve the discomfort during menstruation.

• Journal of the Korean Data and Information Science Society
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• v.27 no.1
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• pp.191-201
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• 2016

The purpose of this study was to explore the correlation among professional self-concept, self-efficacy and job satisfaction and to identify the effect of professional self-concept and self-efficacy on job satisfaction in general hospital nurses. Questionnaires were completed by 156 nurses who were working for one general hospital in Busan. The mean score of professional self-concept and self-efficacy were $3.02{\pm}0.23$ and $2.92{\pm}0.21$ respectively. The mean score of job satisfaction was $2.76{\pm}0.26$. With respect to job satisfaction, the correlations were .325 (p<.001) for professional self-concept and .212 (p=.008) for self-efficacy. As integrate of the study result showed job satisfaction had correlation to professional self- concept and self-efficacy. The regression model explained 12.6% of job satisfaction. Professional self-concept was factor influencing job satisfaction. So professional self-concept enhancement strategies and self-efficacy improvement programs should be developed to improve job satisfaction.

• Journal of the Korean Data and Information Science Society
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• v.28 no.2
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• pp.261-270
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• 2017

This research aims to investigate how healthcare professionals can control their behaviors in the internet and the status of their Internet addiction, thus emphasizing appropriate internet ethics awareness of students majoring in healthcare-related field, the future healthcare professionals. The goal of this research is to verify the mediating effect of self-control between the status of internet addiction of healthcare-related college students and their internet ethical awareness. A questionnaire survey was conducted on 236 students majoring in healthcare-related fields in 5 universities located in D city from March to April, 2016. The result of analyzing correlation of Internet addiction, internet ethics awareness, and self-control shows that self-control is negatively correlated with internet addiction but positively correlated with internet ethics awareness. The result of research suggests that self-control does have partial mediation effect on internet addiction and internet ethical awareness. Accordingly, it is necessary to develop mediator program that enhances self-control in order to improve internet ethical awareness of healthcare-related college students and develops measures to prevent addition to the internet, one of the primary cause of decline in internet ethics awareness.

• Journal of The Korean Association For Science Education
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• v.33 no.6
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• pp.1186-1201
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• 2013

We investigated student's characteristics in each educational achievement level using the results of the NAEA (National Assessment of Educational Achievement) in 2009, 2010, and 2011 for Grade 6 students, and compared the characteristics between elementary and middle school students. The analysis of representative items for each educational achievement level of elementary and middle school students revealed that (a) advanced level students from both elementary and middle school could exactly understand the achievement criteria of the curriculum, (b) proficient level students from both elementary and middle school were understanding the achievement criteria of the curriculum superficially, for example, they could not understand concepts exactly but could memorize terms, and so should have compensational education under situations that ask for short answer or essay type items instead of multiple choice items, and (c) basic level students from both elementary and middle school almost could not understand the achievement criteria of curriculum, and so should have compensational education under situations that only deal with a simple situation. Science concepts treated in science curriculum are hierarchically organized by level of school, and simple compensational education for the students of below basic level will not solve learning deficits in science education. Differentiated education by educational achievement should be largely expanded instead.