PPL 1.2mu gallium arsenide cell set

Journal ArticleThe purpose of this note is to describe the 1.2/i gallium arsenide PPL cell set - not only what is included, but design decisions made along the way. The first section is an overview of the Umitations imposed by the use of gallium arsenide technology, the next section describes the trade-offs in designing the GaAs cell set, and the third section is a description of the cell set in its current form. The last section gives some design guidelines for using this cell set. The appendix is a short reference guide, including cell schematics. This cell set uses the Vitesse 1.2^ process, and Direct-Coupled FET Logic (DCFL) gates. Enhancement and depletion transistors are provided, with depletion devices generally connected as passive pull-ups and enhancement devices as active pull-downs. The reader interested in the details of gallium arsenide technology is referred to the excellent book by Long and Butner[l] or to any of the proceedings from the annual IEEE Symposium on Gallium Arsenide

On the potential of asynchronous pipelined processors

Journal ArticleAn asynchronous version of the pipelined R3000 and DLX processors, the A3000, is being designed. Simulation was employed t o investigate the potential speed-up obtainable due t o the asynchronous operation. Preliminary results show up to a 64% improvement in performance

A gallium arsenide mutual exclusion element

technical reportA mutual exclusion element is a key component in building asynchronous and self-timed circuits. As part of our effort to design high performance self-timed circuits, we have designed a mutual exclusion element in gallium arsenide. This circuit has been fabricated in a 1.2? process and tested. A test circuit using matched delay lines was used to verify mat the circuit operates correctly when input requests arrive simultaneously

Speed without fear: composable self-timed GaAs circuits

technical reportWe have designed a set of self-timed gallium arsenide building blocks that are suitable for composing into larger systems. Systems designed using these modules can be easier to design and modify than their globally clocked counterparts, while maintaining high performance. The modules are suitable for use in a translation systems that automatically translates an OCCAM program into a circuit netlist

A comparison of self-timed design using FPGA, CMOS, and GaAs technologies

Journal ArticleAsynchronous or self-timed systems that do not rely on U global clock to keep system components synchronized can offer significant advantages over traditional clocked circuits in a variety of applications. One advantage is that because of the separation of timing, from, functionality in these systems, the same circuit may he implemented in U variety of technologies without modification to the circuit. In this paper we explore one approach to self-timed design and describe implementations of an example circuit in three different technologies. The simple routing chip used us the example has been described by writing U program in OCCAM, translated into U circuit consisting of a small set of basic modules, and implemented using Actel FPGA, CMOS, and GuAs technologies

La metodología aula inversa en el pensamiento crítico de los alumnos de una universidad Estatal, Lima, 2019

El presente trabajo de investigación, ejecutado en una Universidad Estatal de Lima, tuvo como objetivo determinar la influencia de La metodología aula inversa en el pensamiento crítico de los estudiantes de la facultad de Ciencias y Humanidades. El estudio se realizó dentro del enfoque cuantitativo. El diseño de investigación es no experimental y de corte transversal. Así mismo, con una población de 300 estudiantes, quienes dan a conocer los lineamientos que se cumplen con la metodología de aula inversa. El instrumento de aula inversa fue tomado del trabajo de investigación de Levano, quien realizó la validación a través del alfa de Cronbach y el instrumento del pensamiento crítico fue tomado del trabajo de investigación de Clemens quién tomó la validación realizada por Olivares y Wong. Como el valor de significancia obtenida por el Rho de Spearman es <0.05 no se acepta la hipótesis nula. Ello significa que Existe una relación directa y significativa entre La metodología aula inversa en el pensamiento crítico de los alumnos de una universidad estatal de Lima 2019. Así se concluye que existe un grado de relación media entre la metodología de aula inversa y el pensamiento crítico

Diseño organizacional y estrategia empresarial del contact center Lima 2014

La presente investigación titulada Diseño Organizacional y Estrategia Empresarial del Contact Center Lima 2014, tuvo como objetivo general identificar la relación del Diseño Organizacional con la Estrategia Empresarial, el diseño organizacional cuyas características son estructurales y contextuales según la teoría del autor Richard Daft, y la estrategia empresarial orienta el comportamiento de la empresa hacia el logro de los objetivos a través del análisis ambiental y el análisis organizacional según la teoría del autor Idalberto Chiavenato. Se empleó el método deductivo, el tipo de estudio fue el descriptivo, de diseño no experimental, la población fue de 41 personas del Contact Center Lima y 41 personas las cuales llenaron cuestionarios de 69 preguntas de tipo Likert, método de evaluaciones sumarias delimitada a través de cinco opciones, el muestreo aplicado fue el muestreo no probabilístico por conveniencia, el cuestionario fue validado por 4 juicios de expertos y se midió la confiabilidad del instrumento a través del coeficiente Alfa de Cronbach, estas encuestan fueron procesadas a través del programa de análisis estadístico SPSS versión 21. El cual permitió realizar la discusión para contrastarlas con la teoría explicada en el marco teórico; así mismo, se identificó que el Diseño Organizacional está relacionado favorablemente con la Estrategia Empresarial del Contact Center, Lima 2014, debido a que los resultados arrojaron una relación significativa entre la parte estructural y contextual de la organización con el análisis ambiental, análisis interno y objetivos de la empresa, básicamente concernidas con las limitaciones, debilidades, profesionalismo, especialización, metas/estrategias, tecnología de la organización y la cultura

Mapping cortical haemodynamics during neonatal seizures using diffuse optical tomography: A case study

AbstractSeizures in the newborn brain represent a major challenge to neonatal medicine. Neonatal seizures are poorly classified, under-diagnosed, difficult to treat and are associated with poor neurodevelopmental outcome. Video-EEG is the current gold-standard approach for seizure detection and monitoring. Interpreting neonatal EEG requires expertise and the impact of seizures on the developing brain remains poorly understood. In this case study we present the first ever images of the haemodynamic impact of seizures on the human infant brain, obtained using simultaneous diffuse optical tomography (DOT) and video-EEG with whole-scalp coverage. Seven discrete periods of ictal electrographic activity were observed during a 60 minute recording of an infant with hypoxic–ischaemic encephalopathy. The resulting DOT images show a remarkably consistent, high-amplitude, biphasic pattern of changes in cortical blood volume and oxygenation in response to each electrographic event. While there is spatial variation across the cortex, the dominant haemodynamic response to seizure activity consists of an initial increase in cortical blood volume prior to a large and extended decrease typically lasting several minutes. This case study demonstrates the wealth of physiologically and clinically relevant information that DOT–EEG techniques can yield. The consistency and scale of the haemodynamic responses observed here also suggest that DOT–EEG has the potential to provide improved detection of neonatal seizures

2015 Research & Innovation Day Program

A one day showcase of applied research, social innovation, scholarship projects and activities.https://first.fanshawec.ca/cri_cripublications/1002/thumbnail.jp

Evaluating the Effects of SARS-CoV-2 Spike Mutation D614G on Transmissibility and Pathogenicity.

Global dispersal and increasing frequency of the SARS-CoV-2 spike protein variant D614G are suggestive of a selective advantage but may also be due to a random founder effect. We investigate the hypothesis for positive selection of spike D614G in the United Kingdom using more than 25,000 whole genome SARS-CoV-2 sequences. Despite the availability of a large dataset, well represented by both spike 614 variants, not all approaches showed a conclusive signal of positive selection. Population genetic analysis indicates that 614G increases in frequency relative to 614D in a manner consistent with a selective advantage. We do not find any indication that patients infected with the spike 614G variant have higher COVID-19 mortality or clinical severity, but 614G is associated with higher viral load and younger age of patients. Significant differences in growth and size of 614G phylogenetic clusters indicate a need for continued study of this variant