• Journal of the Korea Society of Computer and Information
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• v.15 no.3
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• pp.19-26
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• 2010

The most critical element in the real-time operation of RFID application programs that are suitable for the mobile environment is the RFID middleware, made exclusively for mobile handsets, which processes collected data on a real-time basis and sends only the useful information to the application client. In this paper, we intend to design and implement the Pet management system for optimized mobile RFID middleware that supports real-time data processing. The proposed Pet management system consists of registration module, retrieval module, communication module, and display module in order to display retrieval result from server. Also, the captured data in the PDA is transmitted to the server and another client system using the mobile application interface that supports the SOAP application access protocol.

• Perspectives in Nursing Science
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• v.5 no.1
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• pp.17-31
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• 2008

Purpose: The purpose of this study was to evaluate the usability of a prototype personal digital assistant (PDA)-based decision support system for the management of obesity through usability testing with end-users (Advanced Practice Nurses [APNs]) prior to its implementation in clinical settings. Methods: This descriptive study used observational and think aloud techniques to address the research question: what usability problems are perceived by end-users? Five APNs were provided with the scenarios and the list of tasks to evaluate the application. Their verbalizations were recorded through Morae usabil ity software. Data analysis was based on the data captured through Morae, transcriptions, notes, and the end-user survey. Results: End-users completed all the required tasks without encountering a severe usability problem, and agreed that the system was easy to use. clear, concise, and useful. Usability issues that were unrecognized by the developer or usability experts were identified by APNs. The usability problems were categorized according to positive characteristics, negative characteristics, and recommendations. The usability issues were discussed with the project team members, and solutions were suggested to improve the user interface of the PDA-based decision support system before the final implementation. Conclusions: This approach had an important impact on making the system easier to use and more useful from the perspective of design and content. The results of this evaluation provided iterative feedback regarding the design and implementation of the PDA-based decision support system for the management of obesity.

• Proceedings of the Korea Contents Association Conference
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• 2009.05a
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• pp.833-838
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• 2009

Recently the use of the portable device like a PDA or a Smart-Phone increases to follow, Java technology that support Platform Independence on Hardware Flatform has become core Flatform in Software sphere. Especially Portable device use a KVM(Kilobyte Virtual Machine) of Java's various specification. In this paper, we design and implement Java Game Application for verification of KVM and verify on Real-Time Operating System iRTOS.

• 한국HCI학회:학술대회논문집
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• 2007.02a
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• pp.435-439
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• 2007

본 연구에서는 기존의 펜형 장치에 진행된 촉감 연구들이 진동이나 역감의 제시에 그쳤던 것에 반해, 더욱 일반화된 펜형 장치에 상징적 의미를 포함한 정보를 전달할 수 있는 촉감 패턴을 생성하는 방법을 제시한다. 상징성이 강한 시각적 아이콘을 촉감 패턴으로 변환하기 위해 점에서 이미지와 의미를 연상해 내는 별자리의 구성방식을 분석하여 이미지를 점으로 간략화하고, 촉감 제시 장치의 핀과 연동시켜 패턴화하였다. 아울러 본 연구의 효용성을 검증하기 위해 펜형 장치를 사용하는 PDA 응용 프로그램인 스케쥴러를 개발하여 생성한 촉감 패턴을 적용하였다. 본 연구는 임의적 배치 형태인 점자와 달리 촉감 패턴 자체가 상징성을 가질 수 있다는 점에서 일반인이 더욱 직관적으로 사용할 수 있다는 장점이 있으며 향후 적용한 응용 프로그램으로 사용성에 대한 검증이 필요하다. 또한 그 응용으로 일반적인 OS용 아이콘을 촉감화하거나 시각 장애인과 일반인이 모두 사용할 수 있는 Caller ID서비스, 게임 등 여러 가지 방향으로 활용할 수 있다.

• Proceedings of the Korea Society for Industrial Systems Conference
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• 2006.05a
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• pp.241-248
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• 2006

Web is greatly contributing in providing a variety of information. Especially, as media for the purpose of development and education of human resources, the role of web is important. Furthermore, E-Learning through web plays an important role for each enterprise and an educational institution. Also, above all, fast and various searches are required in order to manage and search a great number of educational contents in web. Therefore, most of present information is composed in HTML, so there are lots of restrictions. As a solution to such restriction, XML a standard of Web document, and its various search functions is being extended and studied variously. This paper proposes a search system able to search XML in E-Learning or var ious contents of non-XML using mobile device PDA.

• Journal of Mushroom
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• v.5 no.1
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• pp.43-49
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• 2007

Application of sludge wastes into the field may help soil fertility with physical, chemical and biological properties. Efficient use of sludge waste, however, requires an individual assessment of the waste products. A lot of experiment into the organic waste-treated soils has been done for decade. However, studies have not been carried out on the assessment of agricultural soil by Basidiomycota. This study was assessed the influence of sludge application on soil healthy in agricultural upland soils. The organic wastes selected for long-term application experiment in this study were municipal sewage sludge (MSS), industrial sewage sludge (ISS), leather processing sludge (LS), alcohol fermentation processing sludge (FS), and pig manure compost (PMC). To develop the soil healthy assesment method, soil samples were diluted by 20X with distilled water. After shaking at 200rpm for 30 minutes, the shaked sample was mixed on PDA(Potato Dextrose Agar). And sterilized at $121^{\circ}C$ for 20 minutes. Coriolus hirsutus (MKACC 50560) was inoculated on petri-dish including PDA mixed sample. After the media was incubated at $25^{\circ}C$ for five days, the mycelial growth of C. hirsutus was measured. When the mycelial growth on sample media was compared with growth on media contained PDA only, well grown media contained sample soil was assesed as healthy soil. The results suggest that the simple method by Coriolus hirsutus is a handy way to assess the healthy of waste sludge-applied upland soils.

• Proceedings of the Korean Geotechical Society Conference
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• 1996.10a
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• pp.357-362
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• 1996

• The KIPS Transactions:PartD
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• v.8D no.3
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• pp.265-272
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• 2001

In case of implementing a complicated application like WAP (Wireless Application Protocol) in a mobile terminal with the characteristics of bare machine and versatile kernel aspects of which are control, interrupt and IPC(Inter Process Communication), a special methodology should be needed. If not, it will cause more cost and human resources, even delayed product into launching for the time-to-market. This paper suggests AKL, (Abstract Kernel Layer) for the design and implementation of WAP on basis of multi-platform. AKL is running on the various kernel including REX, MS-DOS, MS-Window, UNIX and LINUX. For the purpose of it, AKL makes machine-dependant features be minimized and supports a consistent interface on API (Application Program Interface) point of view. Therefore, it makes poring times of a device be shorten and makes easy of maintenance. We validated our suggestion as a consequent of porting WAP into PlamV PDA and mobile phone with AKL.

• Proceedings of the KSRS Conference
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• v.1
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• pp.417-420
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• 2006

In these days, mobile application dealing with information contents on mobile or handheld devices such as mobile communicator, PDA or WAP device face the most important industrial needs. The motivation of this study is the design and implementation of mobile application using high resolution satellite imagery, large-sized image data set. Although major advantages of mobile devices are portability and mobility to users, limited system resources such as small-sized memory, slow CPU, low power and small screen size are the main obstacles to developers who should handle a large volume of geo-based 3D model. Related to this, the previous works have been concentrated on GIS-based location awareness services on mobile; however, the mobile 3D terrain model, which aims at this study, with the source data of DEM (Digital Elevation Model) and high resolution satellite imagery is not considered yet, in the other mobile systems. The main functions of 3D graphic processing or pixel pipeline in this prototype are implemented with OpenGL|ES (Embedded System) standard API (Application Programming Interface) released by Khronos group. In the developing stage, experiments to investigate optimal operation environment and good performance are carried out: TIN-based vertex generation with regular elevation data, image tiling, and image-vertex texturing, text processing of Unicode type and ASCII type.

• Proceedings of the Korea Information Processing Society Conference
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• 2002.11a
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• pp.531-534
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• 2002

위치 기반 광고란 휴대폰, PDA(Personal Digital Assistant), 노트북 PC 등 위치 획득이 가능한 단말의 위치 정보를 이용하여 광고를 하는 것으로 위치 추적이 가능한 단말의 위치 정보를 활용하여 부가정보를 서비스하는 위치 기반 서비스 (LBS, Location Based Services)의 한 종류이다. 최근의 이동 통신 기술의 발달과 휴대폰, PDA 등 모바일 단말의 급속한 확산으로 인하여 LBS 는 유무선 인터넷의 응용 및 그를 이용한 부가 가치 창출에 있어 핵심적인 역할을 할 것이며, 특히 위치 기반 광고는 LBS 시장의 상당 부분을 차지할 것으로 예상되고 있다. 이러한 위치 기반 광고는 광고를 저장하고 관리하는 광고 ASP (Application Service Provider) 플랫폼에서 단말의 위치 정보를 저장 및 관리하는 LBS 플랫폼을 참조하여 위치 및 시간에 따라 광고의 대상이 되는 사용자 목록을 얻고, 해당 사용자에 대하여 단문 메시지 또는 멀티미디어 광고를 제공함으로써 이루어질 수 있다. 본 논문에서는 현재 많이 사용되고 있는 단문 메시지 서비스 (SMS, Short Message Services)를 사용하여 위치 기반 광고를 제공할 수 있는 광고 ASP 플랫폼을 설계한다. 이를 위해 광고 ASP 플랫폼이 제공하여야 하는 기능과 위치 기반 광고의 처리 흐름을 분석한다.