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The Compact Muon Solenoid (CMS) experiment at CERN is scheduled for a major upgrade in the next decade in order to meet the demands of the new High Luminosity Large Hadron Collider. Amongst others, a new tracking system is under development including an outer tracker capable of rejecting low transverse momentum particles by looking at the coincidences of hits (stubs) in two closely spaced sensor layers...
The CMS collaboration is preparing a major upgrade of its detector, so it can operate during the high luminosity run of the LHC from 2026. The upgraded tracker electronics will reconstruct the trajectories of charged particles within a latency of a few microseconds, so that they can be used by the level-1 trigger. An emulation framework, CIDAF, has been developed to provide a reference for a proposed...
A new tracking system is under development for operation in the CMS experiment at the High Luminosity LHC. It includes an outer tracker which will construct stubs, built by correlating clusters in two closely spaced sensor layers for the rejection of hits from low transverse momentum tracks, and transmit them off-detector at 40 MHz. If tracker data is to contribute to keeping the Level-1 trigger rate...
Insect pests are estimated to cause losses of 16% to world attainable crop production with post-harvest losses another 10%, in spite of widespread use of pesticides. Losses due to pests have been estimated for key rainfed crops in different regions of the world. Pest species attack every phenological stage of crop growth; sometimes they are the same species and sometimes different. No one tool can...
The algebraic multigrid (AMG) method is often used as a preconditioner in Krylov subspace solvers such as the conjugate gradient method. An AMG preconditioner hierarchically aggregates the degrees of freedom during the coarsening phase in order to efficiently account for lower-frequency errors. Each degree of freedom in the coarser level corresponds to one of the aggregates in the finer level. The...
Solar flares are the conversion of stored magnetic energy into particle acceleration and radiation, with potential significant detrimental effects on earth including damage to technological infrastructure. Recent work has considered methods to predict flare activity from quantitative measures of the solar magnetic field. Feature selection methods provide insight into measures which have the largest...
Multiple exercise options generalize American-style options as they allow the holder multiple exercise rights and control over the exercise amounts. They arise in both real and financial option applications, such as tolling agreements and swing options which are primarily used in the energy industry. The Forest of Stochastic Meshes is a recently proposed simulation method for valuing such options...
A method employing the super scalar architecture of ARM®Cortex™-A8 processor has been proposed to reduce the hardware complexity of Huffman decoding algorithm. The focus of this paper is efficient decoding of escape coded code words in an audio bitstream using concurrent execution in ARM core and coprocessor. Results are provided showing performance gain obtained by using the techniques introduced.
This paper introduces a music-player application customized to run in a dual core system. New signaling mechanisms have been developed for the two cores to work in tandem and provide a seamless playback of audio files. Novel methods of implementations of player features have been discussed. The application can be easily deployed using a dual-core system as a standalone multimedia player in an automotive...
Obesity is a societal problem affecting whole populations, not merely individuals, and its impact now extends globally to adults and children in economically developed and less developed countries alike. The reasons for the trends of increased obesity include environmental factors such as globalization, economic changes, and urbanization that have changed the types of quantities of food available...
Color-infrared (CIR) aerial photography, CIR aerial digital imagery, and high resolution QuickBird multispectral satellite imagery were evaluated for distinguishing and mapping black mangrove mangrove [Avicennia germinans (L.) L.] populations along the lower Texas gulf coast. Accuracy assessments performed on classified maps of photographic and digital images of the same study site had both producer's...
A method to determine porous silicon index and thickness during growth is proposed. An rms accuracy of 0.3 and 80 nm for the index and thickness, respectively was estimated based on a synthetic reflectance model including intensity and thermal noise.
This work demonstrates the successful implementation of two single-stage low-noise amplifiers (LNAs) using 0.18 mum fully depleted silicon on insulator (FDSOI) CMOS technology. These two amplifiers utilize a metal T-gate n-MOSFET device for improved RF performance. The narrowband LNA has a measured gain of 8.2 dB, a noise figure (NF) of 1.5 dB and input referred third order intercept point (IIP3)...
This paper presents two integrated non-reflective bandpass filters. The filters are implemented in a silicon germanium (SiGe) BiCMOS technology and fully depleted silicon on insulator (FDSOI) CMOS technology. The purpose of these circuits is to explore the feasibility of passive filter applications on silicon substrates while maintaining low insertion loss and 50 Ohm impedance matching. The SiGe-based...
Surface preparation is critical in the passivation of HgCdTe photovoltaic devices, as poor surface quality can create a fixed surface charge, and fixed, fast and slow interface traps. Two similar photovoltaic arrays with different surface preparation techniques are investigated; one has an additional step of anodic oxide growth and removal before the surface passivation is performed. A flood illumination...
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