• IEMEK Journal of Embedded Systems and Applications
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• v.9 no.1
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• pp.33-41
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• 2014

This paper presents a IEEE1588 based clock synchronization technique for a sRIO (Serial RapidIO) network which is applied to a submarine system. Clock synchronization plays a key role in the success of a networked embedded system. Recently, the IEEE1588 algorithm making use of dedicated chipset has been widely used for the synchronization of various industrial applications. However, there is no chipset available for the sRIO network that can offer many advantages, such as low latency and jitter. In this paper, the IEEE1588 algorithm for a sRIO network is implemented using only software without any dedicated chipset. The proposed approach is verified with experimental setup.

• Proceedings of the KSME Conference
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• 2003.11a
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• pp.1757-1762
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• 2003

For coping with various ship types easily, welding automation using CAD/CAM is demanded and and developed. In this paper we propose a dedicated CAM system which generates MACRO files to control robot manipulators. The paper contains CAD interface, virtual simulation, macro generation and job schedulling. At first, it defines and extracts weldline from CAD data, and generates proper MACRO programs. And it obtains optimum job schedules. This system removes the manual work, and consequently reduces the overall lead time. And it reduces costs and time for developing robot welding programs. This can be expanded to virtual factory simulation technology. Moreover, it is possible to apply this system for automation of Cutting and Painting

• Journal of Korean Society of Industrial and Systems Engineering
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• v.30 no.1
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• pp.8-14
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• 2007

This paper addresses the allocation planning of the storage location in a warehouse system that the dedicated storage method is used. In the discrete finite time period model, the demands for storage location of products are dynamic for time periods. The planning is to determine the reallocation time period and the storage location of the products in reallocation time period, which minimizes costs. The cost factors are the reallocation cost, the travel cost within warehouse and the surplus storage location cost. A model is formulated, and the property of optimal solution is characterized. The dynamic programming algorithm is developed, and a numerical example is shown.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.29 no.2
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• pp.58-66
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• 2006

This paper addresses the analysis of the travel distance and the number of storage location for storage location allocation methods in a warehouse system. The dedicated, randomized, combined and limited storage methods are considered. The combined and the limited storage methods are suggested here, which the combined storage method is to divide the storage locations into the dedicated storage area and the randomized storage area, and the limited storage method is to restrict the storage area of each product. Through a numerical example, the average travel distance between input/output point and the storage locations, and the number of storage location needed in the warehouse are compared between storage location allocation methods. The nearest randomized storage method is shown as the reasonable one in the travel distance and the number of storage location.

• Proceedings of the Korea Institute of Convergence Signal Processing
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• 2000.12a
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• pp.41-44
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• 2000

In this paper, the dedicated short range communication(DSRC) system which used as the automatic gate system(AGS) Donga Univ. RRC developed is applied to yard automation. We proposed the communication algorithm of between roadside equipment(RSE) and on-board equipment(OBE). We analyzed transmitted and received information, classification and feature of between OBE and RSE for automation of the container yard and unloading system.

• Asia-pacific Journal of Multimedia Services Convergent with Art, Humanities, and Sociology
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• v.7 no.1
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• pp.265-276
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• 2017

Korean petroglyphs have been found over a lot of ruins through nation-wide regions including Daegok-ri Bangudae and Cheonjeon-ri in Ulsan. In this paper, we present an information system for Korean petroglyph ruins named KPetro which supports the dedicated camera application and the timeline service. The system provides the services for searching and updating information in various ways over the primary database constructed with the data on petroglyph ruins, which are collected by the Bangudae Petroglyph Institute. In addition, through the camera application developed for the system, users can easily add photos to the appropriate petroglyph ruin according to the GPS information of the location where those photos are taken. Also, the system provides the timeline service showing the photos for a specific petroglyph ruins in order of shooting time. To support both mobile and desktop environments, KPetro provides its functions in a web browser using the HTML5 standard technology and the JavaScript language, enabling the system to be adaptable to various user devices and extendable for its functionalities.

• Journal of Digital Convergence
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• v.18 no.1
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• pp.11-21
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• 2020

This paper analyzed the statistical status of public properties, management organization, operational performance focused on Gyeonggido. And This paper tried to get some implications through comparative analysis of public property management system of Gyeonggido and other local governments including Seoul, Incheon. The survey was also conducted on the whole practitioners of public property management in Gyeonggido. As a result of analysis, although Gyeonggido has an urgent need to raise funds because financial independence is insurfficient, non-tax revenues from it's own public properties are insignificant compared to holdings. The major reason would be pointed out that the dedicated management department on public property is not composed and lack of workforce. The survey results conformed that establishment of the dedicated department to public property management is urgent by reorganization of management structure for the higher operational performance.

• Proceedings of the Earthquake Engineering Society of Korea Conference
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• 2000.04a
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• pp.213-217
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• 2000

It is essential to establish an earthquake alert system real-time seismographic data acquisition and data transmission by dedicated communications,. Up to now approximately 60 earthquake stations are installed in Korea and being operated by KMA. KEPRI,. KINS and KIGAM and its number will be increased in time. The earthquake data recorded in half of these stations are transmitted to data center and analysed in quasi real-time. Therefore if these real-time seismographic stations be connected to each organization by dedicated lines and we will develop an algorithm which we can calculate the magnitude and epicenter within 25-30 seconds after an earthquake occurred it will be possible to develop an Earthquake Alert System giving several tens of seconds warning in advance.

• Journal of applied mathematics & informatics
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• v.23 no.1_2
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• pp.505-516
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• 2007

In this paper, we provide some fundamental properties and basic theoretical results of K-class-based dedicated storage policy in a unit load system assuming the constant-space assumption that the number of storage locations for a class is not the maximum aggregate inventory position for a class but the sum of space requirement for products assigned to the class. The main theorem is that there exists a (K+1) -class-based storage layout whose expexted single command (SC) travel time is not greater than that of a K-class-based storage layout, i.e, $E(SC^*_{K+1}){\leq}E(SC^*_K)\;for\;K=1,{\cdots}$, (n-1).

• Journal of Satellite, Information and Communications
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• v.10 no.4
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• pp.128-135
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• 2015

Currently we have an electro-optical space object monitoring system (OWL-Net) developed by the Korea Astronomy and Space Science Institute as the only ground-based on orbit space object tracking capability in Korea. This system can produce the ephemeris of domestic satellites and survey the geosynchronous orbit region. As the number of observation objects increases and the operation condition get worse, a low budget dedicated monitoring telescope capable of full time geosynchronous orbit region survey can support an effect operation of the OWL-Net. In this study, we analyze the requirements of a low-budget dedicated optical monitoring system for geosynchronous orbit region without the degradation of observation quality to increase the risk of corrupted ephemeris.