• Journal of the Korean Association of Geographic Information Studies
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• v.6 no.2
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• pp.1-9
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• 2003

Surface solar radiation over the sea is estimated using the visible and infrared spin scan radiometer (VISSR) data onboard Geostationary Meteorological Satellite(GMS)-5 from January 1997 to December 1997 in clear and cloudy conditions. The hourly insolation is estimated with a spatial resolution of $5km{\times}5km$ grid. The island pyranometer operated by the Japan Meteorological Agency(JMA) is used to validate the estimated insolation. The root mean square error of the hourly estimated insolation is $104W/m^2$ with 0.91 of the correlation coefficient. In the variability of the hourly solar radiation investigated around the Korean Peninsula, the maximum value of solar radiation is found in June at the Yellow Sea and the East Sea, while in August at the South Sea because of low pressure conditions and front in June.

• Journal of Internet Computing and Services
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• v.10 no.4
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• pp.177-187
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• 2009

Typical RFID-device applications have provided users to each vendor-specific interface for supporting control and management of RF-tags and readers within their managed domain. Also, typical RFID-business applications have been implemented by using each event-data structure of RF-readers or RFID middlewares. RFID infrastructure managers, thus, are difficult to handle individual control and management specifications for managed RF-tags, devices and systems. Most RFID application services, also, are attached to providing visibility and traceability of an RF-tag item. To solve these problems, this paper proposes an RFID service management policy information model which supports to define unified control and management for heterogeneous RFID devices, middlewares and applications. This paper describes an example procedure that an RFID service management policy definition based on the proposed model is adaptively transformed and executed on a specific RFID sub-infrastructure.

• Journal of the Korea Society of Computer and Information
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• v.25 no.5
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• pp.27-36
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• 2020

In this paper, we propose a method to derive valuable but hidden infromation from the data which is the core foundation in the 4th Industrial Revolution to pursue knowledge-based service fusion. The hyper-connected societies characterized by IoT inevitably produce big data, and with the data in order to derive optimal services for trouble situations it is first processed by discovering valuable information. A data-centric IoT platform is a platform to collect, store, manage, and integrate the data from variable devices, which is actually a type of middleware platforms. Its purpose is to provide suitable solutions for challenged problems after processing and analyzing the data, that depends on efficient and accurate algorithms performing the work of data analysis. To this end, we propose specially designed structures to store IoT data without losing the semantics and provide algorithms to discover the useful information with several definitions and proofs to show the soundness.

• The Transactions of the Korea Information Processing Society
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• v.4 no.3
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• pp.859-870
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• 1997

Computerized map reading system is one of the most important application areas in the image processing.A map databaes can be used for a wide range of scial activities such as narural resource assessment,regional plan-ming,and reaffic nabigation system. The road segments,however,are extracted as briken in the area where they are overlapped and interupted by chracters and symbols.Few approaches have been taken to complete road segnents interupted by map symbols.In this paper,a movel approach for the extracation and completion of road segements interupted by map symbols is proposed using neural networks.The system is applied to 1/25,000 scaled maps published by the Grographical Survey Unstitute of Ministry of Construction of Korea.It will be shown that the system can extract and reconstruct road segmetns for the various areas of maps sucessfully.

• Journal of the Korea Society of Computer and Information
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• v.15 no.12
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• pp.133-142
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• 2010

P-type fire control panel, currently in use, has a big hazard that can cause the large scaled human death tolls and property damage in the massive fire because it is difficult to identify in real time the location of fire outbreak and whether search-device are broken down or not. In this paper, I suggest that the integrated fire automation system on based p-type fire control panel should be used, which can detect in real time the signal that occur when whether search-device are broken down or not, and can detect the arisen circumstances information of p-type fire control panel on the fire signal in the far away. The devised systems have designed and embodied the analysis of circumstances information and module that can analyze the circumstances information from the p-type fire control panel and the part of internet access installment which can gather and deliver the circumstances information from the fire prevention facility receiver.

• Journal of the Korea Convergence Society
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• v.10 no.5
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• pp.141-148
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• 2019

The study aims to assess college students' perception and needs for applying virtual reality(VR) techniques to library services. To achieve the purpose of the study, the study broadly reviewed previous studies related to applying various intelligent information technology including VR techniques to the core tasks and services in the fields of library. The study also examined total 563 college students' needs and perception regarding to applying VR techniques to current library services by using the survey method. On the basis of the survey findings, the study suggested some strategies for re-educating and preparing current librarains and library workers who can utilize new intelligent information technologies and contents including VR in the fields of library.

• The Journal of the Korea Contents Association
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• v.20 no.12
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• pp.498-518
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• 2020

This study aimed to examine the impact of internal communication(IC) on collaborative performance(CP) and organizational effectiveness(OE), and the moderating effect of online communication tools. First, IE and RS, ISI, RS, and COMN had a significant impact on ISI, Perf, respectively. The all factors of CP affected JS and OC. Second, IE, COMN, and RS influenced OC through CC and Perf. Third, online cooperative tools for collaboration have been moderated between RS and ISI, CoW and CC, IE and Perf, Perf and JS, repectively- IE(Infromation Exchange), CoW(Collaboration Work), Communication(COMN), Relationship(RS), Information Sharing Intention(ISI), CC(Collaboration Culture), Perf(Performance), JS(job satisfactino), and OC(Organization Commiment). These results could provide one implication for the establishment and utilization of online communication collaboration tools that take into account internal communication components within the organization.

• Journal of the Korean Association of Geographic Information Studies
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• v.8 no.3
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• pp.142-149
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• 2005

To provide observed oceanography data at coastal fish and shellfish farm in the northeastern sea of the Korean peninsula on real time base, we developed real time application system for fisheries oceanography information. The system has been made up a mooring buoy system, a server for oceanography data collection, a server for archiving data and a database system, and a web server for providing fisheries oceanography information using internet. Futhermore, to support letters service on a cellular phone, we developed the communication system from mooring buoy to cell phone on real time base. The oceanography data derived from the system are water temperature speed and direction of current in surface layer middle layer and bottom layer in hour. We were able to quantify short term variation of ocean conditions within several days at shellfish farm such as a scallop sea farm using our system. To reduce damages of fish and shellfish farm from abnormal phenomena of ocean conditions such as a broken stratification of water, an occurrence of abnormal coastal cold water and warm water we will be able to move vertically and horizontally the sea farm facilities to proper conditions using real time oceanography information derive from the system.

• Journal of the Korean Geographical Society
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• v.31 no.3
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• pp.529-541
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• 1996

The Korean economy has recently changed from industry-based economy toward information-based one, empha-sizing on information utiliation and technological development. It is important to examine the background for the incoming information society and spatial aspect of infromation, because informati-zation process itself contains spatial features like spatial concentrtion and dispersion. This paper generally focuses on the socio-cultural aspects of the informati-zation aspects. The main questions are as follows: 1) what are the ain questions of the exsisting Korean case studies on the informatization; 2) how can we find the charateristics of spatial concentration of informatization by informatization indices; 3) is there any relationship between the degree of informatiztion and regional development? The results of this study can be found in the following facts: (1) The exsisting studies cannot be generallized as spatial analysis on the informatization In general, they focus only a single aspect of information industry or information job. Futhermore, their spatial unit of analysis is limited to provincial level, rather thn city-level micro study. (2) There are big differences between the Capital region, especially Seoul, and others with regard to the socio-cultural aspects of informatiation. Such informatization is concentrated in Seoul. Inchon and Kyeonggi-do, which are the better positions in information intensive activities. (3) The regional differences for the level of informatization are much bigger than those for the level of welfare, suggesting that the informatization tends to concentrate in specified large cities like Seoul. It is clear the Korea is now entering the initial stage of information society.