7 Result(s)
within
Eunmi Choi
Engineering
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Article
High-Precision Complex Permittivity Measurement of High Loss Dielectric Materials Using a Geometrical Gap in Millimeter Wave Frequency
We proposed a newly devised method for measuring the complex permittivity of high-loss materials at the millimeter wave frequency range. In this paper, we employed a geometrical gap between samples, which allo...
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Chapter and Conference Paper
Spatial Big Data Analysis System for Vehicle-Driving GPS Trajectory
The data collection of vehicle-driving GPS trajectory becomes the basis of big data analysis and prediction for a variety of purposes, such as navigation and movement analysis. In order to properly analyze a l...
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Chapter and Conference Paper
The VM Weighted Filter Scheduling Algorithm for OpenStack Cloud
OpenStack cloud is an open source private cloud environment and uses the filter scheduling algorithm for scheduling of virtual machines to hosts. Filter scheduler selects the host with highest weight and assi...
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Chapter and Conference Paper
Effective Pre-processing Methods with DTG Big Data by Using MapReduce Techniques
A huge amount of sensing data is generated by a large number of pervasive IoT devices. In order to find a meaningful information from the big data, pre-processing is essential, in which many outlier data need ...
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Article
System Development and Performance Testing of a W-Band Gyrotron
A high-power W-band gyrotron has been designed and performance tested in Korea, with an output power in the range of tens of kilowatts. The gyrotron consists of a diode-type electron gun operating at 40 kV, a ...
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Chapter and Conference Paper
Mobile Cloud Computing Architectural Design Taxonomy toward the ‘Cloud Computing in Hand’ Era
Beyond the hybrid cloud computing and its integration service, Mobile Cloud Computing (MCC) starts to cultivate personal cloud computing areas with enormous services and applications with rapid increase of per...
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Chapter and Conference Paper
Extending Grid Infrastructure Using Cloud Computing
The computational domain is becoming huge and complex. Cloud computing has begun as a general computing model to support processing large volumetric data using clusters of commodity computers. In recent years,...
