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Real-time processing of big data has become a core operation in various areas of business, such as extracting value from real-time social network data. Big data workloads in the wild show a strong temporal variability that not only poses the risk of slow responsiveness in data analysis, but also leads to a high risk of service outage. The recent development of batch streaming systems based on the...
Similar InAs/GaAs quantum-dot lasers emitting on either the ground or excited state are studied under optical feedback. The feedback-sensitivity and dynamics of the excited-state laser are investigated and compared to that of the ground-state laser.
We report avalanche photodiodes fabricated from a previously uncharacterized material system, AlxIn1-xAsySb1-y digital alloy. A series of AlxIn1-xAsySb1-y (x: 0.3∼0.7) p-i-n avalanche photodiodes have been grown on GaSb substrate. Dark current characteristics, avalanche multiplication, external quantum efficiency, and excess noise are presented. Very low excess noise, corresponding to k = 0.03∼0.05,...
We report a low loss (∼12.3dB/km), 37-cell hollow-core photonic bandgap fiber operating in the 1μm spectral region and demonstrate its bend-insensitive operation and its use for high power laser beam delivery.
The performance of primary health care clinic can be impacted by both of patient behavior and appointment rules. In this paper, we compare and evaluate the level of patient service and clinic performance of different overbooking appointment rules under changing patient behavior. The focus is on the appropriate selection of overbooking rules based on panel characteristics. Analysis methodology involves...
A cash-constrained two-level supply chain with a supplier and a single retailer facing stochastic demand is considered in this paper. Two different financing strategies are investigated and the resulting expected return of the supplier, retailer, and bank are examined. Our numerical study shows that by sharing revenue and risk among supplier, retailer, and bank, the joint financing strategy can improve...
Modern multidimensional medical imaging technology produces very large amount of data especially from the computed tomography modality. These volumetric dataset opens new demands for big data storage and high-speed communication systems which may be alleviated by image compression techniques. Current image compression schemes adopted in the DICOM standard do not exploit the inter-slice correlation...
Ge peaking n- and p-FinFETs have been demonstrated by adopting neutral beam etching (NBE) and anisotropic neutral beam oxidation (NBO) processes. The irradiation-free NB processes not only suppress surface roughness but also guarantee low defect generation on the etched Ge surface. The fabricated Ge peaking FinFETs possess several unique features: (1) A peaking fin configuration with a 6-nm top-gate...
A method to extract five parameters in the single-diode equivalent circuit of a solar cell is described in detail. The parameter extraction is mainly from the knowledge of the sole information contained in the datasheets given by the manufacturer of the solar cell. Besides the information with regard to the most representative points of the I-V curve (short circuit, open circuit, and the maximum power...
In this article, we described a new computational framework to construct “Super Gene Sets”-Pathways, Annotated list, and Gene signatures (PAGs), regulatory (r-type) PAG-PAG relationships. To construct PAGs, we aggregate singleton PAGs (sPAGs) upstream/downstream of a common shared multi-gene PAG (mPAGs). Then, we iteratively remove a member gene to calculate its Cohesion Coefficient (CoCo), which...
Protein structure comparison algorithms are useful for predicting aspects of protein function. Some algorithms identify remote homologs, while others distinguish closely related proteins that prefer different substrates. Most of these methods assume that proteins are rigid in order to perform comparisons more rapidly, while others compensate for flexibility by representing proteins as a connected...
We review recent progress in the development of hollow core optical fibres for telecoms/datacoms, highlighting in particular their suitability for low-latency/time-sensitive applications, and their ultimate potential for broadband, ultralow loss (and nonlinearity) transmission.
We propose a multi-band OFDM modulation for wireless VLC system together with dynamic bandwidth allocation. In addition, the proposed modulation format also can enhance the maximum VLC traffic rate to 17.8% without using blue filter.
Highway intersections as planned points of traffic conflict are believed to impose extra mental workload on drivers. The aim of this study is to identify the most representative physiological parameters of drivers' mental workload when they are passing through highway intersections and the relationship It is concluded that traffic flow on the main road section imposes the heaviest mental load on the...
It is a common practice that today's cloud data centers guard the performance by monitoring the resource usage, e.g., CPU and RAM, and issuing anomaly tickets whenever detecting usages exceeding predefined target values. Ensuring free of such usage anomaly can be extremely challenging, while catering to a large amount of virtual machines (VMs) showing bursty workloads on a limited amount of physical...
We report an effectively singlemode tubular antiresonant hollow core fiber with >1000nm bandwidth and record-low loss of 25dB/km, fully connectorizable with SMF28. We demonstrate penalty-free data transmission at wavelengths of 1065, 1565 and 1963nm.
We discuss our recent progress in hollow core-photonic bandgap fiber fabrication for high capacity transmission, focusing on two key areas: longitudinal uniformity and length upscaling as well as reviewing highlight results in data transmission.
Novel Sn-rich Au-Sn solder alloys were designed using the cluster-plus-glue-atom (CPGA) model and calculation of phase diagrams (CALPHAD) method, and the melting behavior, microstructure, wettability and interfacial reactions of the designed Sn-Au-Ag solders were systematically investigated. The melting temperature of Sn-Au-Ag solder is among the range of 205.86 to 206.63 °C. The microstructure of...
In this paper, we applied the Born Iterative Method (BIM) to reconstruct three-dimensional inhomogeneous objects buried in spherically multilayered media. The nonlinear inverse problem is linearized by Born approximations and solved iteratively via the conjugate-gradient approach (CG). The forward scattering problem in the spherically multilayered media is solved by stabilized biconjugate-gradient...
Singular structures in plasmonics, for example, touching wires, crescent cylinders, etc., are well known for enhancing the field in small volumes by several orders of magnitude. Recent studies revealed that transformation optics can provide a very powerful analytical tool to solve these class of problems. It was also pointed out that these class of structures can also be suitable candidates for energy...
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