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Article
Energy-aware dynamic response and efficient consolidation strategies for disaster survivability of cloud microservices architecture
Computer system resilience refers to the ability of a computer system to continue functioning even in the face of unexpected events or disruptions. These disruptions can be caused by a variety of factors, such...
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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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Article
Open Access`Risk of cardiovascular disease associated with febuxostat versus allopurinol use in patients with gout: a retrospective cohort study in Korea
Febuxostat is the drug used to treat hyperuricemia in patients with gout. Recently, the usage of Febuxostat has been controversial over the side effects in cardiovascular. The study aimed to comparatively anal...
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Article
Open AccessRisk of aortic aneurysm and aortic dissection with the use of fluoroquinolones in Korea: a nested case–control study
Recent studies have raised concern about the association of fluoroquinolones with an increased risk of aortic aneurysm and aortic dissection. We aimed to evaluate such risk in a Korean population.
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Article
Open AccessThermal Decomposition In Situ Monitoring System of the Gas Phase Cyclopentadienyl Tris(dimethylamino) Zirconium (CpZr(NMe2)3) Based on FT-IR and QMS for Atomic Layer Deposition
We developed a newly designed system based on in situ monitoring with Fourier transform infrared (FT-IR) spectroscopy and quadrupole mass spectrometry (QMS) for understanding decomposition mechanism and by-pro...
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Article
Open AccessGeneration of E-band metasurface-based vortex beam with reduced divergence angle
Vortex beams carrying orbital angular momentum (OAM) have attracted considerable attention for the development of high-capacity wireless communication systems due to their infinite sets of orthogonal modes. Ho...
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Article
A stochastic reward net-based assessment of reliability, availability and operational cost for a software-defined network infrastructure
The networking infrastructure of a software-defined network (SDN) requires further study to achieve continuity and high availability of data transactions for cloud computing services. However, various types of...
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Article
Development of the Full Package of Gyrotron Simulation Code
A complete code-package for gyrotron simulation to analyze its performance is under development in UNIST, Korea. We first time report the present status of the code-package named as UNIST Gyrotron Design Tool ...
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Article
Correction to: A comprehensive evaluation of availability and operational cost for a virtualized server system using stochastic reward nets
The section “Acknowledgement” was incorrect in the original article. The correct section “Acknowledgement” is given below.
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Chapter and Conference Paper
Model-Based Sensitivity of a Disaster Tolerant Active-Active GENESIS Cloud System
Modern cloud computing systems are prone to disasters. And the true cost due to service outages is reportedly huge. Some of previous works presented the use of hierarchical models: fault tree (FT), reliability...
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Article
A comprehensive evaluation of availability and operational cost for a virtualized server system using stochastic reward nets
Virtualized server systems, as a major underlying element in high-performance computing systems, require further studies on many aspects of dependability. Among the significant factors, the availability measur...
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Article
Investigation of the charge-storage behavior of electrochemically activated graphene oxide on supercapacitor electrodes in acidic electrolyte
Herein, charge storage behavior of graphene oxide electrode was investigated after its electrochemical activation. X-ray photoelectron spectroscopy (XPS), cyclic voltammetry (CV), galvanostatic chargedischarge...
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Article
A basis of spatial big data analysis with map-matching system
The data collection of vehicle trajectories becomes the basis of big data analysis and prediction for a variety of purposes, such as vehicle navigation and movement analysis. A digital tachograph (DTG) is pre-...
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Article
Big data pre-processing methods with vehicle driving data using MapReduce techniques
A huge amount of sensing data are generated by a large number of pervasive IoT devices. In order to find meaningful information from the big data, it is essential to perform pre-processing, in which many outli...
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Article
Effect of the graphene oxide reduction temperature on supercapacitor performance
In this study, we investigated the influence of the reduction temperature on graphene oxide. After performing the thermal reduction at specific temperatures (200, 600, and 1000 °C), the morphological and cryst...
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Article
Open AccessOrbital Angular Momentum (OAM) of Rotating Modes Driven by Electrons in Electron Cyclotron Masers
The well-defined orbital angular momentum (OAM) of rotating cavity modes operating near the cutoff frequency excited by gyrating electrons in a high-power electron cyclotron maser (ECM)—a gyrotron—has been der...
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Article
Open AccessRemote detection of radioactive material using high-power pulsed electromagnetic radiation
Remote detection of radioactive materials is impossible when the measurement location is far from the radioactive source such that the leakage of high-energy photons or electrons from the source cannot be meas...
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Article
Radiofrequency characteristics of ionized sputtered tantalum nitride thin-film resistor in CMOS device
We report the analysis of the radiofrequency (RF) characteristics according to the size, area, and shape of TaN thin-film resistor (TFR) layers. As the TFR size increased, its characteristics were degraded wit...
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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...
