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Flash-based devices internally provide multilevel parallelism, and parallelizing flash operations is the key to improving performance. Most of existing research works dispatch and schedule host requests so that the obtained sub-requests can be served in parallel, however, these works seldom parallelize the extra operations introduced by the internal garbage collection (GC) process. The costly operation...
Due to the unique erase-before-write characteristic of flash memories, flash-based solid-state disks (SSDs) use out-of-place update and require a garbage collection process to recycle invalid data space. This process brings extra operations and latencies, causing I/O blocking and performance degradation, especially when the device is close to be full. In this work, we use a parallel-unit-aware allocation...
A microelectrode array-based impedance biosensor was developed and demonstrated for rapid, specific, sensitive detection of multiple avian influenza viruses (AIVs). Six interdigitated microelectrodes were placed at the bottom of six wells in a microplate to form six sensors for different AIVs and controls. Then, AIV specific ligands were immobilized on the microelectrode surface to capture target...
This article studies from the rescue demands during equipment material supply, builds rescue strategy of multimode transportation based on the theory of disruption management, analysis and compares the advantages and disadvantages of this rescue strategy, aiming at providing decision support in processing disruption events for headquarters of equipment material command structure.
A novel impedance biosensor was developed based on the combination of a bio-nanobead separation/concentration procedure and an interdigitated array nanoeletrode and was demonstrated for sensitive and rapid detection of H5 subtype of avian influenza virus (AIV). Magnetic nanobeads with a diameter of 30 nm were coated with H5 subtype-specific monoclonal antibodies to selectively capture the target virus...
In view of the fact that steel cables for cable-stayed bridges are susceptible to corrosion damage and tend to get stress relaxation after long-term service, it is essential to be considered the time-dependent effects into consideration in structural analysis to ensure safety of the existing bridges. However, most of the recent methods are based on the cable material in perfect state and the effects...
The objectives of this study were to improve our previous portable impedance biosensor instrument with more rapid, reliable and quantitative features for detection of avian influenza (AI) virus and to evaluate its performance using H5N1 and H5N2 virus. A high-intensity and high-gradient magnetic field based separator was designed and fabricated for rapid separation of AI virus. KPL measuring solution...
The nonlinear vibrations of cables excited by the vibration of beam were investigated. At first, a simple connection condition and boundary condition of the cable-stayed beam structure were applied. The nonlinear equations of motion of the cable-stayed beam structure were derived, and the static sag of the cable as well as the geometric nonlinearity was considered, moreover, Applying the multi-scale...
The dynamic stability of the hinged-hinged sinusoidal shallow arch with geometrical imperfection under time wise distributed load is investigated in this paper. First, the nonlinear governing equation of shallow arch is derived from the dpsilaAlembert principle and Euler-Bernoulli assumption. And the dimensionless type of the equations, which is used to investigate the equilibrium configurations of...
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