Browsing by Affiliation of Duke Author(s) "Electrical and Computer Engineering"
Now showing items 1-20 of 297
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A Binaural Cochlear Implant Sound Coding Strategy Inspired by the Contralateral Medial Olivocochlear Reflex.
(Ear Hear, 2016-05)OBJECTIVES: In natural hearing, cochlear mechanical compression is dynamically adjusted via the efferent medial olivocochlear reflex (MOCR). These adjustments probably help understanding speech in noisy environments and ... -
A broadband low-reflection metamaterial absorber
(Journal of Applied Physics, 2010-09-15)Artificially engineered metamaterials have enabled the creation of electromagnetic materials with properties not found in nature. Recent work has demonstrated the feasibility of developing high performance, narrowband ... -
A Case for Quantifying Statistical Robustness of Specialized Probabilistic AI Accelerators
(2019 IBM IEEE CAS/EDS – AI Compute Symposium, 2019-10-02) -
A crowdsourced analysis to identify ab initio molecular signatures predictive of susceptibility to viral infection.
(Nature communications, 2018-10-24)The response to respiratory viruses varies substantially between individuals, and there are currently no known molecular predictors from the early stages of infection. Here we conduct a community-based analysis to determine ... -
A diffuse reflectance spectral imaging system for tumor margin assessment using custom annular photodiode arrays.
(Biomedical optics express, 2012-12)Diffuse reflectance spectroscopy (DRS) is a well-established method to quantitatively distinguish between benign and cancerous tissue for tumor margin assessment. Current multipixel DRS margin assessment tools are bulky ... -
A flexible statistical model for alignment of label-free proteomics data--incorporating ion mobility and product ion information.
(BMC Bioinformatics, 2013-12-16)BACKGROUND: The goal of many proteomics experiments is to determine the abundance of proteins in biological samples, and the variation thereof in various physiological conditions. High-throughput quantitative proteomics, ... -
A Foxp2 Mutation Implicated in Human Speech Deficits Alters Sequencing of Ultrasonic Vocalizations in Adult Male Mice.
(Front Behav Neurosci, 2016)Development of proficient spoken language skills is disrupted by mutations of the FOXP2 transcription factor. A heterozygous missense mutation in the KE family causes speech apraxia, involving difficulty producing words ... -
A General Framework for Adversarial Examples with Objectives
(ACM Transactions on Privacy and Security, 2019-07-19) -
A host gene expression approach for identifying triggers of asthma exacerbations.
(PloS one, 2019-01)RATIONALE:Asthma exacerbations often occur due to infectious triggers, but determining whether infection is present and whether it is bacterial or viral remains clinically challenging. A diagnostic strategy that clarifies ... -
A host transcriptional signature for presymptomatic detection of infection in humans exposed to influenza H1N1 or H3N2.
(PLoS One, 2013)There is great potential for host-based gene expression analysis to impact the early diagnosis of infectious diseases. In particular, the influenza pandemic of 2009 highlighted the challenges and limitations of traditional ... -
A hybrid ion-atom trap with integrated high resolution mass spectrometer
(Review of Scientific Instruments, 2019-10-01)© 2019 Author(s). In this article, we describe the design, construction, and implementation of our ion-atom hybrid system incorporating a high resolution time of flight mass spectrometer (TOFMS). Potassium atoms (39K) in ... -
A lightning discharge producing a beam of relativistic electrons into space
(Geophysical Research Letters, 2010-09-01)Strong electric fields associated with lightning generate brief (∼1 ms) but intense Terrestrial Gamma-ray Flashes (TGFs), detected by spacecrafts. A few events are thought to be the signature of a relativistic electron beam ... -
A method to obtain a Ragone plot for evaluation of carbon nanotube supercapacitor electrodes
(Journal of Materials Research, 2010-08-01)Electrochemical double layer capacitors, also referred to as supercapacitors, are a promising technology in the field of energy storage. Carbon nanotube (CNT)-based supercapacitors are particularly interesting because of ... -
A microwave metamaterial with integrated power harvesting functionality
(Applied Physics Letters, 2013-10-14)We present the design and experimental implementation of a power harvesting metamaterial. A maximum of 36.8% of the incident power from a 900 MHz signal is experimentally rectified by an array of metamaterial unit cells. ... -
A miRNA Host Response Signature Accurately Discriminates Acute Respiratory Infection Etiologies.
(Frontiers in microbiology, 2018-01)Background: Acute respiratory infections (ARIs) are the leading indication for antibacterial prescriptions despite a viral etiology in the majority of cases. The lack of available diagnostics to discriminate viral and bacterial ... -
A model of variability in brain stimulation evoked responses.
(Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference, 2012)The input-output (IO) curve of cortical neuron populations is a key measure of neural excitability and is related to other response measures including the motor threshold which is widely used for individualization ... -
A Modular Multilevel Series/Parallel Converter for a Wide Frequency Range Operation
(IEEE Transactions on Power Electronics, 2019-10-01)When providing ac output, modular multilevel converters (MMCs) experience power fluctuation in the phase arms. The power fluctuation causes voltage ripple on the module capacitors, which grows with the output power and inversely ... -
A network of substrates of the E3 ubiquitin ligases MDM2 and HUWE1 control apoptosis independently of p53.
(Sci Signal, 2013-05-07)In the intrinsic pathway of apoptosis, cell-damaging signals promote the release of cytochrome c from mitochondria, triggering activation of the Apaf-1 and caspase-9 apoptosome. The ubiquitin E3 ligase MDM2 decreases the ... -
A new fully automated approach for aligning and comparing shapes.
(Anatomical record (Hoboken, N.J. : 2007), 2015-01)Three-dimensional geometric morphometric (3DGM) methods for placing landmarks on digitized bones have become increasingly sophisticated in the last 20 years, including greater degrees of automation. One aspect shared by ... -
A Quantitative Approach to Predict Differential Effects of Anti-VEGF Treatment on Diffuse and Focal Leakage in Patients with Diabetic Macular Edema: A Pilot Study.
(Translational vision science & technology, 2017-03-21)We use semiautomated segmentation of fluorescein angiography (FA) to determine whether anti-vascular endothelial growth factor (VEGF) treatment for diabetic macular edema (DME) differentially affects microaneurysm (MA)-associated ...
