• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.14 no.2
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• pp.153-159
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• 2014

For smart work (smart office), RDP(Remote Desktop Protocol) connection is the most popular method. When the office workers do not have personal space, smart office is very useful. That is, they can connect personal computer using Internet at cafe or public spaces. Using the smart office, it is possible to make personal business environment to increase business efficiency. In this paper, we designed and implemented smart office using RDP (Remote Desktop Protocol). We expected that the office workers can be used smart office for business efficiency.

• Journal of Cadastre & Land InformatiX
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• v.45 no.1
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• pp.169-179
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• 2015

Recently, as the amount of data increases rapidly, the development of IT technology entered the 'Big Data' era, dealing with large-volume of data at once. In the spatial field, a spatial data service technology is required to use that various and big amount of data. In this study, firstly, we explained the technology of typical spatial information data services abroad, and then we have developed large KML data processing techniques those can be applied as KML format to VWorld desktop. The test was conducted using a large KML data in order to verify the development KML partitioned methods and tools. As a result, the index file and the divided files are produced and it was visible in VWorld desktop.

• Journal of radiological science and technology
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• v.37 no.3
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• pp.203-209
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• 2014

Usefulness and clinical availability for surgery efficiency were evaluated by conducting pre-operative planning with a model manufactured by desktop 3D printer by using clavicle CT image. The patient-customized clavicle fracture model was manufactured by desktop 3D printer of FDM wire laminated processing method by converting the CT image into STL file in Open Source DICOM Viewer Osirix. Also, the model of the original shape before damaged was restored and manufactured by Mirror technique based on STL file of not fractured clavicle of the other side by using the symmetry feature of the human body. For the model, the position and size, degree of the fracture was equally printed out. Using the clavicle model directly manufactured with low cost and less time in Department of Radiology is considered to be useful because it can reduce secondary damage during surgery and increase surgery efficiency with Minimal invasive percutaneous plate osteosynthesis(MIPO).

• Journal of the Ergonomics Society of Korea
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• v.33 no.2
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• pp.135-142
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• 2014

Objective: This study aims to develop a new desk with a built-in bookholder and desktop-mounted sliding drawer for reducing stress of seated reading postures and to analyze its effect. Background: It is general for readers to bend their back and neck when reading books on desks, which may result in high back and neck postural stress. In addition, postures using vertically layered drawers positioned at the side of users may be awkward. Method: For reducing the postural stress, a new desk with a built-in bookholder and sliding drawer was developed based on a standard of KS G 4208 for student desk. The muscle activities of reading postures on both existing and new desks were measured using EMG, in which seven male and three female college students participated. The postural stress, and musculoskeletal discomfort and ease of usage for existing and new drawers were analyzed by RULA and questionnaire survey, respectively. Results: Compared to existing desk, the muscle activity for the new desk with a bookholder was reduced by 47% when reading books. In addition, musculoskeletal discomforts in the shoulder, neck and low back were significantly lower when using the new desk with a bookholder. Although the stresses for postures using the desktop-mounted sliding drawer and general drawer were not significantly different, the questionnaire survey revealed that the new desktop-mounted sliding drawer is easier to use. Conclusion: A new desk developed in this study significantly reduced postural stress and enhanced subjective preference when reading. Application: This would be useful when developing new desks with low postural stress.

• The Journal of the Korea Contents Association
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• v.18 no.6
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• pp.434-442
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• 2018

Recently, the threat to the security and damage of important data leaked by devices of intranet infected by malicious code through the Internet have been increasing. Therefore, the partitioned intranet model that blocks access to the server for business use by implementing authentication of devices connected to the intranet is required. For this, logical net partition with the VDI(Virtual Desktop Infrastructure) method is no information exchange between physical devices connected to the intranet and the virtual device so that it could prevent data leakage and improve security but it is vulnerable to the attack to expose internal data, which has access to the server for business connecting a nonregistered device into the intranet. In order to protect the server for business, we suggest a blockchain based network partition model applying blockchain technology to VDI. It contributes to decrease in threat to expose internal data by improving not only capability to verify forgery of devices, which is the vulnerability of the VDI based logical net partition, but also the integrity of the devices.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.26 no.10
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• pp.1432-1440
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• 2022

Recently, as Virtual Desktop Infrastructure(VDI) is widely used not only in office work environments but also in workloads that use high-spec multi-core-based applications, the requirements for real-time and stability of VDI are increasing. Accordingly, the display protocol used for remote access in VDI and performance optimization of virtual machines have also become more important. In this paper, we propose two ways to configure desktop virtualization for multi-core-based application operation. First, we propose a codec configuration of a display protocol with optimal performance in a high load situation due to multi-processing. Second, we propose a virtual CPU scheduling optimization method to reduce scheduling delay in case of CPU contention between virtual machines. As a result of the test, it was confirmed that the H.264 codec of Blast Extreme showed the best and stable frame, and the scheduling performance of the virtual CPU was improved through scheduling optimization.

• Journal of the Institute of Electronics Engineers of Korea CI
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• v.39 no.2
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• pp.54-63
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• 2002

Recently, many web-enabled personal devices are becoming available for connecting to the internet, and there are many use]-s who access the internet from hand-held devices such as PDAs, cell phones. Most pages on the world wide web are designed for displaying on desktop computers with color monitor having at least 640$\times$480 resolution. But these devices do not have the same rendering capabilities as desktop computer, so the same web content needs to be rendered differently on hand-held devices. Therefore, there have been a variety of web transcoding techniques proposed to solve the problem between the web contents and hand-held devices. In this paper, we propose a web transcoding system(WebPrism) for real-time information providing using the semi-automatic transcoding method. The semi-automatic web transcoding method is a good solution when if mobile users access the limited number of web pages which layout is not changed frequently, also WebPrism is implemented as a desktop PC and experimental result shows that the proposed system generates the best looking document for a given display size of PDA.

• Transactions on Control, Automation and Systems Engineering
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• v.4 no.1
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• pp.23-31
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• 2002

We proposed a concept of a desktop micro device factory for visually servoed teleoperated microassembly assisted by a virtual reality (VR) interface. It is composed of two micromanipulators equipped with micro tools operating under a light microscope. First a manipulator, control method for the micro object to follow a planned trajectory in pushing operation is proposed undo. vision based-position control. Then, we present the cooperation control strategy of the micro handling operation under vision-based force control integrating a sensor fusion framework approach. A guiding-system based on virtual micro-world exactly reconstructed from the CAD-CAM databases of the real environment being considered is presented for the imprecisely calibrated micro world. Finally, some experimental results of microassembly tasks performed on millimeter-sized components are provided.

• Proceedings of the Korean Information Science Society Conference
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• 2004.04a
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• pp.808-810
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• 2004

유비쿼터스 컹퓨팅 환경에서 모바일 디바이스는 Service Controller의 역할을 수행한다. 그러나 모바일 디바이스를 이용하여 원격지 리소스에 접근하는 것은 제약이 따른다. Desktop에서 흔히 쓰이는 FTP와 같은 원격지 접속 기술은 모바일 디바이스에서는 사용 할 수 없다. 또 다른 방안으로 모바일 디바이스에서 Java Application을 이용하여 원격지 컴퓨터에 접속하는 방법이 있다. 그러나 이 또한 Java Security 문제를 해결해야 한다. 모바일 디바이스에서의 Java Security 문제는 그 응용 범위나 필요성에 비해 아직까지 구현 모델은 없다. 따라서 본 논문에서는 Desktop상에서 구현하는 Java Security 접근 방법 모델을 이용하여 모바일 디바이스에서 웹 브라우저를 통해 Java Application으로 원격지 컴퓨터에 접근하는 방법을 구현한다.

• KIISE Transactions on Computing Practices
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• v.20 no.10
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• pp.555-560
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• 2014

This paper proposes the data security technology for the desktop virtualization environment using the separated software execution method. In the virtual environment where allocates separate VMs to the users, there is a benefit that the programs in one guest machine are isolated from the programs running in another guest machine, whereas in the separated execution environment that supports application virtualization, the isolation is not offered and it causes the data security problem because the applications are executed by the one root privilege in the server. To solve this problem, we provides the data security method using the server storage filter, the viewer filter, and the file mapping table in this paper.