• The Journal of the Korea Contents Association
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• v.16 no.7
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• pp.532-540
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• 2016

With Recently in art and culture domains, there's rising controversy over shared economy and public domain works. The government is introducing institutional measures such as Gongumadang and KOGL(Korea Open Government License) program to expand the grounds for public domain works. In order to promote and facilitate the use of public domain works, it is imperative to understand how the providers who create and provide the public domain works, as well as the users, perceive shared economy and public domain works. However, preceding studies usually put emphasis on the meaning and significance of the shared economy and show limitation of not discussing providers' perception on shared economy and public domain works. Therefore, this study examines to see if there's a difference of perception between the consumers/users and the providers who owns the copyright of public domain work.

• Journal of Service Research and Studies
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• v.2 no.2
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• pp.53-79
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• 2012

According to Electronic Times(2012. 1. 3), "PMO was introduced from 1950s in the USA and as of 2010, PMO participated in 84% of project ordered by public and private sector." And Ministry of public administration and security announced that the Ministry will organize Task Force for arranging "standard for introduction and operation of PMO" for support of project implementation and strengthening specialty of ordering organization, and then, actively launch the Task Force from February, 2012. Thus, necessity of PMO is regarded as natural in some aspect but thesis for doctoral degree written by Kim Gi-yeong(2007) suggested, "performance of several projects begun at the same time cannot be interpreted as high according to whether PMO team exists or not." Martin et al.(2005) asserted, "according to whether PMO team exists or not, but there is no significant difference in other factor." In the contradictory situation, it is necessary to perform more various approaches for performance and necessity of PMO in the academic aspect.

• Journal of Industrial Convergence
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• v.18 no.1
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• pp.79-85
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• 2020

Recently, the RPAS(Remote Piloted Aircraft System), by remote control and autonomous navigation, has been increasing in interest and utilization in various industries and public organizations along with delivery drones, fire drones, ambulances, agricultural drones, and others. The problems of the stability of unmanned drones, which can be self-controlled, are also the biggest challenge to be solved along the development of the drone industry. drones should be able to fly in the specified path the autonomous flight control system sets, and perform automatically an accurate landing at the destination. This study proposes a technique to check arrival by landing point images and control landing at the correct point, compensating for errors in location data of the drone sensors and GPS. Receiving from the Google Map API and learning from the destination video, taking images of the landing point with a drone equipped with a NAVIO2 and Raspberry Pi, camera, sending them to the server, adjusting the location of the drone in line with threshold, Drones can automatically land at the landing point.

• The Journal of the Acoustical Society of Korea
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• v.31 no.6
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• pp.359-366
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• 2012

Today, people are exposed to the various noisy environments, such as in the buses, subway and supermarkets where there are a lot of people. The noise issue is getting more serious as people want to use portable sound equipment and mobile phones even under this noisy condition. People want to use the portable equipment to exchange the information freely and they set the volume as 15dB higher than the noise around them, which almost reach at 110 dB. That amount of sound can cause noise induced deafness to the users and another issue to the others as additional noise source. A Bone-conduction system can be a solution to reduce noise and enhance voice signal of mobile phone. In this paper, we propose the way of cancelling noise and enhancing speech signal of mobile phones, by installing bone-conduction feedback system with ordinary mobile phones. With this system, we can reduce the environment noise and enhance the voice quality of mobile phones. Using this method, we can enhance the signal by around 17 dB.

• 한국IT서비스학회:학술대회논문집
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• 2009.05a
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• pp.121-121
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• 2009

u-City는 첨단 정보통신 인프라를 활용하여 유비쿼터스 서비스를 도시공간에 제공함으로써 도시민의 생활편의 증대와 삶의 질을 높이고 체계적인 도시관리 및 도시의 제반 기능의 혁신을 통해 도시 경쟁력 향상을 목표로 한다. 최근 u-City의 핵심부문으로, u-City의 성공적 구축을 위해 관심이 집중되고 있는 도시통합운영센터는 기존 도시에서는 시도해 보지 않았던 새로운 개념으로, U-City법에서 향후 U-서비스의 관리 운영에 필수적인 U-City기반시설로 규정되어 있기는 하지만 도시통합운영센터에 대한 명확한 기준이 없다. 또한 구축 관리 운영을 위해 필요한 법 제도적 기반환경이 미흡한 실정으로, 법적 근거없이 개별법에 의한 사업추진으로 실제로 도시통합운영센터를 구현하는데 많은 어려움을 겪고 있다. 이와 같이 u-City와 도시통합운영센터는 기존 도시에서는 시도해 보지 않았던 새로운 개념이기 때문에 현행 법에 맞지 않는 경우 발생하기 때문에 이에 적합한 새로운 법/제도가 필요하다. 본 연구는 기존 관련법과의 연계를 통한 도시통합운영센터 구축 운영에 대한 법 제도적 기반환경 마련을 위한 연구로서, u-City 관련 법/제도 중 도시통합운영센터 구축 및 운영 관련 사항에 대한 검토를 통해, 법/제도적 측면에서 도시통합운영센터 구현에 필요한 제반사항을 검토하였다. 구축측면 (계획/건설)에서 시스템 공동활용 및 연계 구축 방안 마련을 위해 도시통합운영센터 구축주체, 재원조달방법을 검토하였으며, 운영측면에서 도시통합운영센터 운영 방안을 마련하기 위해 도시통합운영센터의 공공기능 수행 및 운영에 대한 사항을 분석하였다. 도시통합운영센터 구축 운영에 대한 법 제도 정비를 위한 기반연구를 통해 도시통합운영센터의 성공적인 구축 및 운영을 도모하고자 한다.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.39C no.9
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• pp.774-781
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• 2014

Demand for spectrum resources is increasing with the development of mobile telecommunications and so is their economic value. As a way to enhance the economic efficiency of use of spectrum resources, many countries have focused on the management of public and broadcasting spectrums which have traditionally been undercharged compared to their economic values. In this paper, we discuss the economic value valuation of the frequencies for the fisheries communications. The estimated value is the average value of the total equipment cost of the mobile communication services that their service coverage is nation-wide, and the value that adjusted the auction price for the LTE service frequencies in 2011 to the characteristics of fisheries communications.

• Korean Journal of Construction Engineering and Management
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• v.20 no.5
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• pp.95-103
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• 2019

While the Design for Safety (DFS) system has been introduced to Korea, the ordering parties and designers who are implementing this system still have a very low awareness of it. Most ordering parties and designers have a negative view of this system due to a variety of reasons, including the additional workload and their lack of professional manpower. The purpose of this study is to suggest measures to improve the DFS work performance by standardizing the DFS work process and analyzing the level of work performance in each business carried out by ordering parties and designers in order to ensure the efficient execution of DFS business. In conclusion, to improve the DFS work performance of ordering parties and designers, the development of a business support system is suggested, which supports key works such as the identification of risk factors, the provision of measures to reduce such factors, and risk assessment, and provides relevant information to allow ordering parties and designers to prepare the DFS report smoothly.

• Journal of Industrial Convergence
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• v.16 no.4
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• pp.27-32
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• 2018

In this research, in order to prevent the fire of multiple users who are concerned about many human life damage, based on the statistical data of the National Fire Protection Agency's National Fire Information Center and the Fire Defense Administration Fire Defense Administration, Attempts were made on the exploratory approach to measures that can reduce the topic of. In this research, using the preventive firefighting administrative statistics of the Fire and Disaster Management Agency, we analyzed by focusing on the effectiveness of multiple users' firefighting safety education. Through analysis results we could infer that fire safety education does not have effectiveness in actual fire prevention. Through previous research, we found out that the cause is insufficient for the management of fire safety education, thereby deriving an improvement plan to develop a systematic fire safety education system.

• Agribusiness and Information Management
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• v.13 no.1
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• pp.1-25
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• 2021

Technological propensity of agricultural entrepreneurs is becoming necessary to identify and explore new opportunities. Recent studies suggest that the adoption of new technologies is strictly coherent with wider approaches of Entrepreneurial Orientation (EO). Even if the relevance of agriculture is increasing, entrepreneurial research has largely overlooked this challenging sector. Moreover, there is a relative shortage of empirical studies in the literature and there is an enormous potential to be still explored. Stemming from the EO literature, the work proposes for the agricultural sector, the approach of Humane Entrepreneurial Orientation (HEO). The paper proposes an empirical analysis, to verify the effect of the different dimensions of HEO on the propensity of farmers to adopt new technologies. All the results highlight several implications for businesses, for the research system and for public policies.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.20 no.6
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• pp.1-6
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• 2020

Road movement pollutant air environment big data is a link between real-time traffic data such as vehicle type, speed, and load using AVC, VDS, WIM, and DTG, which are always traffic volume survey equipment, and road shape (uphill, downhill, turning section) data using GIS. It consists of traffic flow data. Also, unlike general data, a lot of data per unit time is generated and has various formats. In particular, since about 7.4 million cases/hour or more of large-scale real-time data collected as detailed traffic flow information are collected, stored and processed, a system that can efficiently process data is required. Therefore, in this study, an open source-based data parallel processing performance optimization study is conducted for the visualization of big data in the air environment of road transport pollution.