• Journal of Advanced Navigation Technology
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• v.18 no.5
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• pp.468-475
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• 2014

The recommend system is getting more difficult real time recommend by lager preference data set, computing power and recommend algorithm. For this reason, recommend system is proceeding actively one's studies toward distribute processing method of large preference data set. This paper studied distribute processing method of large preference data set using hadoop distribute processing platform and mahout machine learning library. The recommend algorithm is used Co-occurrence Matrix similar to item Collaborative Filtering. The Co-occurrence Matrix can do distribute processing by many node of hadoop cluster, and it needs many computation scale but can reduce computation scale by distribute processing. This paper has simplified distribute processing of co-occurrence matrix by changes over from four stage to three stage. As a result, this paper can reduce mapreduce job and can generate recommend file. And it has a fast processing speed, and reduce map output data.

• The Journal of the Korea institute of electronic communication sciences
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• v.6 no.5
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• pp.689-696
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• 2011

Feed industry began to demand that beyond simple feeds to meet the needs of customers with a premium catering by economic development situation and, depending on the user's convenience and customer needs. But tableware introduced in the feed system, the introduction of RFID. High and low temperatures and salinity problems that RFID chips, the feed system malfunction. In this paper, infused with IT Convergence Technology was carried out for a smart lunch by putting RFID chips in the Food Court distribute food. Food court meal to ensure stability of the system was a smart lunch that Hot food ($125^{\circ}C$) and cold ($-40^{\circ}C$) and salinity reflecting foods in High temperature, low temperature experiments, through salt spray test. In addition, the existing straight distribute food, scramble distribute food, Marketplace distribute food, Food Court and the advantages of a comparative analysis of distribute food investigated. Through this paper distribute food will contribute to the Food Court. IT convergence technology (RFID, LCD, S/W, H/W) to apply the feed industry in the development of Smart Food Court.

• Journal of Digital Contents Society
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• v.16 no.1
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• pp.123-126
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• 2015

This paper described fault tolerance system running on distributed multimedia. We implemented the error manager service so that the users participated in distribute multimedia collaborative work may refer synchronized error objects as the same view to others. distributed multimedia environment are based on IP-USN(Internet Protocol - Ubiquitous Sensor Network) and M2M(Machine to machine). This is a system that is suitable for detecting, sharing and recovering software error in distribute multimedia CSCW(Computer Supportes Cooperated Work) environment. With error synchronization system, a group cooperating users can synchronize error applications.

• Proceedings of the KSME Conference
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• 2003.11a
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• pp.1620-1624
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• 2003

Recently, the height of building is more high and the number of moving people is increasing in the building. So we want to be necessary more effective vertical moving tool. Most of high intelligent building can satisfy tills need using many elevators. Many elevators system should need to distribute and distribute many elevator effectively. This paper effectively use many elevators to reduce customer' waiting time and propose the model of mathematical group control system.

• Korean Journal of Construction Engineering and Management
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• v.10 no.1
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• pp.102-113
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• 2009

When planning and promoting apartment house development project, it is very important to carry on profitability in planning stage through realistic evaluation and analysis about distributability. Especially, the analysis about project feasibility through forecasting the early distribute rate is crucial stage because it could evaluate overall expecting benefit and feasibility of the project. However, researches and studies related with forecasting profitability and distributabilty of construction development project are insufficient. Also there is a big gap of the standard for evaluating early distribute rate between government and individual corporations. So it is necessary to study about the evaluating early distribute rate. In this point, this study aims to present effective evaluating standard(criteria) which is for forecasting profitability and distribute rate through analyzing various factors and weight of apartment house development projects. This study compared and analyzed examples of the real initial rate of private apartment sale based on the government estimated standard. Among estimated index, omitted items and factors to be additionally considered are combined as 33 detail appraisal contents of 4 parts 9 items by allotting them based on the data about priority of all considered factors.

• Journal of Korean Academy of Nursing Administration
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• v.9 no.4
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• pp.585-597
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• 2003

Purpose: The purpose of this research is to find out how clinical nurse's recognition is effected to nursing organization through compensation justice, and then will support important basic data to management of nursing organization. Methods: Data collection was held through April 1st to 30th in 2003, The Subjects were 375 who were working at 5 hospitals in Seoul and has experiences at least over one year. Result: The average score of nurses' organizational commitment was 3.95 on a 7 point scale, and job satisfaction was 2.80 on a 5 point scale, and distribute justice was 2 on a 5 point scale, and procedural justice was 2.32 on a 5 point scale. We realize the distribute justice of compensation justice showed outstanding difference by age, education back-ground, experience, status of job, religious and types of hospital foundation, comparing the procedural justice only showed the difference by marriage status and type of hospital foundation, Through the study of how compensation-justice effect to organizational commitment, distribute justice never effect instead of procedural justice made effect 30.4% overall transition, as well as procedural justice explain 31.5% of job satisfaction. Conclusion: Finally we have data on the clinical nurse's recognition of compensation justice distribute justice and procedural justice are generally low, job satisfaction and organizational commitment are average. Job satisfaction and organizational commitment are depend upon age and educational level seriously.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.20 no.5
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• pp.979-985
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• 2016

In this paper, a distributed instant message system with multiple servers architecture which can distribute system load effectively using an extended media control channel has been presented. A media control channel provides establishing a reliable control channel and also keeping a reliable control channel between SIP server and client in the field of real-time media transport area. In this study, a new instant message system architecture which can distribute massive instant message including multimedia data to multiple servers has been presented. The presented instant message system architecture can distribute system load by extending media control channel. For this purpose, media control channel messages, which distribute system load to multiple servers dynamically according to increasing number of users, have been designed in our presented system. And, in our research, an exchanging procedures of media control channel messages between servers have also been presented. The performance of the proposed system has been analysed by simulation.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2015.05a
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• pp.105-107
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• 2015

In this paper, we proposed LTD(Load Tolerance Density-distribution) algorithm using dynamic density for analyzing distribute routing path. MANET(Mobile Ad-hoc Networks) consists of the node that has a mobility. By the Mobility, the topology is exchanged frequently. To reduce the exchange of topology, the hierarchy network is studied. However, if the load is concentrated at the cluster head node, the communication is disconnected. the proposed algorithm measure the dynamic density of the node using poisson distribution. And this algorithm provides distribute routing path using dynamic density. The simulation results, the proposed algorithm shows improved packet delivery ratio than the compared algorithm.

• International Journal of Internet, Broadcasting and Communication
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• v.7 no.1
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• pp.10-14
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• 2015

Video Content owners seek to squeeze the maximum amount of revenue from their assets via distribution into more territories. Digital Cinema Package(DCP), trusted solution to distribute protected content to theaters, caters to relatively small user base, which limits revenue. With the growth of the Internet & other digital media, the economics of media content has changed dramatically. Security remains main concern to deliver content to millions of consumers using intelligent digital display devices like Tablets, Smartphones, Smart TVs, Desktop & Laptop. By making the video content available to this segment securely, content owners will benefit from increased revenue. Through this paper we propose Open Source HomeDCP model to distribute the content to home users for offline viewing. We propose to include other open source CODEC than JPEG2000/MPEG2, which are specifically designed for theatrical performance. Final image size will be further reduced considering the display device resolution where video will be finally played. Key Delivery Message(KDM) system to be altered to suit new devices. This will be a big boost to Content Economy as content owners would be able to distribute the content securely to the wider audience & ensure more revenue.

• Proceedings of the Korea Society for Simulation Conference
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• 2002.11a
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• pp.85-89
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• 2002

Development of distributed simulation environment must be required in order to simulate the distributed models regionally and inter-operate with running simulations individually, Simulation based on DEVS formalism is difficult to simulate the distributed models. DEVS formalism is modeling methodology. To specify model, this formalism separates behavior and structure, therefore it is able to design complex model easily. HLA is standard framework of distribute simulation environment, It is defined to facilitate the interoperability and the reusability. RTI (Run Time Infrastructure) is software that provides common service to simulation systems and implementation of the HLA Interface Specification. Method of implementation is that modules cooperating with RTI are added to simulator on DEVS simulation environment. On the DEVS simulation environment (DEVS-Obj -C) that already developed, Highest class of abstract simulator uses service that RTI provide, then This environment is able to change DEVS model into Federate and run distribute simulation that inter-operates with the RTI. Because this distributed simulation environment includes convenience of modeling that obtains through the DEVS formalism and accompanies HLA standard, this environment make it possible to simulate with_ complex systems and heterogeneous simulations