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This paper explores hardware acceleration to significantly improve the runtime of computing the forward algorithm on Pair-HMM models, a crucial step in analyzing mutations in sequenced genomes. We describe 1) the design and evaluation of a novel accelerator architecture that can efficiently process real sequence data without performing wasteful work; and 2) aggressive memoization techniques that can...
This paper proposes a data-driven longitudinal model that brings together factor graphs and learning methods to demonstrate a significant improvement in predictability in clinical outcomes of patients with major depressive disorder treated with antidepressants. Using data from the Mayo Clinic PGRN-AMPS trial and the STAR∗D trial for validation, this work makes two significant contributions in the...
The results of statistical and morphological studies of ionospheric scintillation data at S band (2492.08 MHz), still unexplored, in conjunction with those at L5 (1176.45MHz) and VHF (250.650 MHz) band for the period of 2015–2016 are presented. The observations are carried out at Raja Peary Mohan College center (RPMC: 22.660 N, 88.40 E) situated near the northern crest of the equatorial ionization...
Molybdenum disulfide (MoS2), a member of the transition metal dichalcogenide (TMD) family, is a 2D semiconductor with a direct bandgap of ∼1.8 eV for single layers. Its bandgap allows for high Ion/Ioff metal-oxide semiconducting field-effect transistors (FETs). More relevant for radio frequency (RF) wireless applications, theoretical studies predict MoS2 to have saturation velocities, Vsat > 3×10...
In this paper a novel modulation technique is proposed to eliminate instabilities such as subharmonic and chaotic oscillations in dc-dc switching converters. This modulation technique injects a stabilizing signal which is generated internally from its own state variables so that the system is free from the problems due to externally injected signal, such as frequency mismatch, phase shift, etc. Stability...
Power electronic systems exhibit different types of fast- and slow-scale instabilities which limit the stable operating range of the parameters. It has been shown that the stability of complex power electronic systems can be fruitfully investigated using the Filippov method, where the stability of the system is given by the eigenvalues of the monodromy matrix, which is a combination of the state transition...
Polymeric cable thermal ageing is a key end-of-life consideration for medium voltage (MV) cable, low voltage (LV) power cable, and LV instrumentation and control (I&C) cables. This is particularly true for generation plant cables. For example, in wind generation plants, low thermal design margins and component compatibility issues have been known to cause internal over-heating of conductors and...
A new self-compensation technique is proposed for eliminating subharmonic oscillation and chaotic regimes in dc–dc switching converters under peak current mode control. The proposed method extracts a control signal from the error between the inductor current and a suitable reference and does not require an external signal generator as in the conventional ramp compensation scheme. The analytical expressions...
This work focuses on the high performance computation utility and versatility of Field Programmable Gate Arrays (FPGAs). Digital Logic Designs make available the foundation for multifarious electronic designs. These complex designs have electrical aspects as well as computational aspects like power, current, logical functions, protocols and inputs from user. In this paper, Spartan 3E FPGA is used...
In this article, we have investigated synchronization phenomenon between two discrete chaotic systems. A general scheme for synchronization between two discrete maps with adaptive coupling has been studied analytically. The scheme can be successfully implemented for generalized synchronization between two chaotic maps. Conditional Lyapunov exponents (CLE) and Transverse Lyapunov exponents (TLE) can...
With the highest bulk hole mobility among the commonly used semiconductors, Ge is particularly promising as the enabler of high mobility channel for pFETs in future CMOS technology nodes. So far, ion-implanted B is typically used for the formation of S/D extensions or highly doped drains (HDD) in short channel Ge pFETs [1-3]. Although B is found to diffuse extremely slowly in Ge after annealing [4],...
Design and manufacturing process for high-voltage SiC MOSFETs have been developed in a 150mm CMOS fab. 1.2KV MOSFETs have been fabricated on this production line running in parallel with CMOS wafers. Typical devices have state-of-the-art performance with specific on-resistance of 4.5milliohm-cm2 and low leakage current up to 175°C junction temperature. The process manufacturability and quality of...
High-frequency characteristics of Lg = 60 nm In0.7Ga0.3As MOS-high-electron-mobility transistor (HEMTs) with a 3 nm aluminium oxide grown by atomic-layer-deposition is reported. Fabricated In0.7Ga0.3As MOS-HEMTs with Lg = 60 nm exhibit subthreshold-swing (SS) = 89 mV/dec., drain-induced-barrier-lowering = 98 mV/V, gm_max = 1.1 mS/μm, fT = 187 GHz and fmax = 202 GHz at VDS = 0.5 V. The high-frequency...
GPU accelerators are widely used in HPC clusters due to their massive parallelism and high throughput-per-watt. Data movement continues to be the major bottleneck on GPU clusters, more so when data is non-contiguous, which is common in scientific applications. CUDA-Aware MPI libraries optimize the non-contiguous data movement processing using latency oriented techniques such as using GPU kernels to...
Lithium ion batteries have become a promising candidate as an energy storage in contemporary devices, especially in the automotive field. However, new challenges arise from the flat state of charge to open circuit voltage curve, which puts the Electrochemical Impedance Spectroscopy (EIS) in the lead of condition monitoring. Usually, in the EIS the Fast Fourier Transformation (FFT) is used. The FFT...
In this paper radiation pattern synthesis of time modulated circular antenna array is dealt with. Optimal switching time sequence and optimal uniform inter element spacing is used as variable to control the radiation pattern of the array. The optimal value of controlled parameter can be obtained by the evolutionary optimization technique. Three algorithms real coded algorithm (RGA), particle swarm...
This paper presents a Gravitational Search Algorithm (GSA) based accurate parametric identification approach to identify a closed-loop Box-Jenkins structured Hammerstein model. The main objective of the employed algorithm is to estimate the parameters associated with the model by optimizing the fitness function which is the output mean square error (MSE) in this work. Efficient identification of a...
Salt and pepper noise removal is extremely challenging task when the noise density is very high in the corrupted image. Usually the existing filters are not capable of removing this noise above 70% density. This paper proposes a Sequentially Combined Mean-Median Filter (SCMMF) based on combination of arithmetic mean and median technique. A binary flag image is generated with the help of identified...
The Compact Muon Solenoid (CMS) detector installed at the CERN Large Hadron Collider (LHC) has an extensive muon system which provides information simultaneously for identification, track reconstruction and triggering of muons. As a consequence of the extreme particle rate and high integrated charge, the essentiality to upgrade the LHC has given rise to the High Luminosity phase of the LHC (HL-LHC)...
The Compact Muon Solenoid (CMS) detector is one of the two general-purpose detectors at the CERN LHC. LHC will provide exceptional high instantaneous and integrated luminosity after second long shutdown. The forward region |η| ≥ 1:5 of CMS detector will face extremely high particle rates in tens of kHz/cm2 and hence it will affect the momentum resolution, efficiency and longevity of the muon detectors...
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