• International Journal of Contents
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• v.3 no.3
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• pp.38-42
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• 2007

In this paper, we propose a new storage system architecture called as U-Storage (ubiquitous storage system). U-Storage allows a user to access an on-line storage with any type of information devices that are able to connect to internet. The on-line storage is virtualized to the user's information devices as a local hard disk or a memory card by our U-Storage. With devices supporting U-Storage, users can read and write their data anytime and anywhere without downloading and uploading operation.

• Proceedings of the IEEK Conference
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• 2007.07a
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• pp.455-456
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• 2007

Nowaday it is main issues for us to protect from the polluted water which is flowing in streams and rivers simultaneously. This paper proposed a water maintenance control system using pH sensor. Also the work enables water analysis downloading VHDL coding to FPGA through Max+plus II simulation tool for display realization.

• Journal of Information Processing Systems
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• v.2 no.2
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• pp.76-81
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• 2006

A PDA is used mainly for downloading data from a stationary server such as a desktop PC in an infrastructure network based on wireless LAN. Thus, the overall performance depends heavily on the performance of such downloading with PDA. Unfortunately, for a PDA the time taken to receive data from a PC is longer than the time taken to send it by 53%. Thus, we measured and analyzed all possible factors that could cause the receiving time of a PDA to be delayed with a test bed system. There are crucial factors: the TCP window size, file access time of a PDA, and the inter-packet delay that affects the receiving time of a PDA. The window size of a PDA during the downstream is reduced dramatically to 686 bytes from 32,581 bytes. In addition, because flash memory is embedded into a PDA, writing data into the flash memory takes twice as long as reading the data from it. To alleviate these, we propose three distinct remedies: First, in order to keep the window size at a sender constant, both the size of a socket send buffer for a desktop PC and the size of a socket receive buffer for a PDA should be increased. Second, to shorten its internal file access time, the size of an application buffer implemented in an application should be doubled. Finally, the inter-packet delay of a PDA and a desktop PC at the application layer should be adjusted asymmetrically to lower the traffic bottleneck between these heterogeneous terminals.

• The Journal of the Korea Contents Association
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• v.11 no.6
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• pp.167-175
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• 2011

Increased numbers of Chinese are using the Internet as communications technology develops, and more Chinese are downloading and watching Korean dramas and movies. According to a survey conducted to assess the present state of Korean wave in China, most Chinese young people are watching Korean dramas by downloading them from the Internet. The objective of this study is to see the characteristics of Korean dramas preferred by Chinese viewers: the factors are years of production, diffusers(Broadcasters), types of drama, story topics, main actors, and directors. As a result, Chinese viewers tend to prefer to dramas recently diffused in Korea, miniseries, and comic dramas and romance. Otherwise, broadcasters, main actors, and directors do not influence directly on the choice of dramas of Chinese. Particularly, Korean wave stars in China do not always appear into the dramas favored by Chinese viewers.

• Journal of Internet Computing and Services
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• v.5 no.3
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• pp.63-72
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• 2004

Recently the range of mobile phone's usage has become more widely since phone has the function of data communication and voice communication. In addition, the request of users who wish to represent their identity on their mobile phones by storing some kinds of multimedia data such as images and melody has increased. There are two different methods for downloading the multimedia data; one method accesses a wireless internet server to download the data and another method downloads the data from PC directly. While the first one requires extra fee for downloading the data, the second method has weakness to modify the original data and it cannot be used in GSM phone yet since it is developed for CDMA phone. In this paper, we introduce a PC-based download application system that enables the users to download multimedia data from PC to GSM phone very easily.

• Knowledge Management Research
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• v.21 no.3
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• pp.161-176
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• 2020

Numerous products have been created in a digital format in the era of digitization. At an early stage, such products were provided in the format of individual digital file, requiring the individuals to own products by downloading them on the personal devices. With the development of Internet network, people began to consume digital goods in a new mode called 'streaming.' Streaming is a service provided through access-based consumption mode based on Internet network. Rather than downloading each file, individuals can utilize such product and services by connecting the network to their own devices. Access-based digital goods are distinguished from traditional ownership-based digital goods such as downloaded contents, in that permanent ownership is not allowed. Taken this into account, this study attempts to investigate how individuals' perception toward digital goods, the psychological ownership, differs according to the consumption mode. The results show that individuals feel less psychological ownership toward access-based digital goods than ownership-based digital goods. Our study provides several avenues to both theory and practice.

• Journal of KIISE:Computing Practices and Letters
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• v.8 no.1
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• pp.62-70
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• 2002

The purpose of this paper in that users can use mobile device applications more easily and efficiently through MoDAM (Mobile Device Application Management) system. MoDAM automates the process of web retrieval for obtaining mobile device applications and the process of installing or updating it on mobile devices and then supply users with these automated services in a step form by combining two separated processes. We implement a web agent conforming to OSD (Open Software Description) specification for automating software retrieval and downloading and also a mobile device based software management module conforming to SyncML (Synchronization Markup Language) specification for synchronizing common data between server and client. The method of automated software retrieval and management for mobile devices using these standard specifications minimizes users' interrupts and also can be applied to traditional several different mobile devices, operating systems or downloading web sites without platform dependent considerations.

• Journal of the Korean Society for Library and Information Science
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• v.32 no.4
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• pp.117-140
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• 1998

With the advancement of Internet technology, traditional libraries are going through a new metamorphosis into digital libraries. Digital libraries substitute digital files for papers, metadata for catalogues, world wide users on the network for localized patrons, while offering limitless possibilities for easy downloading of information. The aim of the study is to present a model for our digital library based on the knowledge acquired from the analysis of the state of the art technology employed in building and managing digital libraries. It is our belief that the national information infrastructure for digital libraries are mandatory for an open information society.

• Proceedings of the Korean Information Science Society Conference
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• 2005.11a
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• pp.355-357
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• 2005

This paper describes the architecture and modeling of adaptive and reconfigurable OS in wireless distributed sensor networks. Before initial sensor nodes are deployed in a sensor field, minimum functions including basic OS and routing algorithms are required for these nodes to send request messages for dynamic reconfigurations and receive response messages from a task manager. When the downloading is finished, each sensor node can reconfigure the initial state and be ready to start its functions. By applying this reconfigurable modeling, sensor nodes can be easily deployed in the sensor field and dynamically programmed during a bootstrap process.

• Proceedings of the Korean Information Science Society Conference
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• 2005.11a
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• pp.928-930
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• 2005

멀티소스 다운로딩 기법은 사용자가 요구하는 데이터를 가지는 여러 소스로부터 동시에 데이터를 다운로드 받아 사용자가 사용할 수 있는 최대의 대역폭을 사용할 수 있도록 하는 기법이다. 결국 이러한 동작은 전체 시스템의 네트워크 대역폭 사용을 효율적으로 만들어준다. 우리는 현재 여러 분산 시스템에서 사용중인 멀티소스다운로딩 기법의 장점과 그 활용도를 조사하였고, 비대칭 인터넷 하부구조상에서 가지는 의미를 분석하였다. 이러한 연구는 이후에 멀티소스 다운로딩 기법을 분산 시스템이 아닌 타 시스템으로 응용하거나 활용하기 위한 연구의 토대가 될 수 있을 것이다.