NDLTD logo NDLTD Union Catalog and Global ETD Search

Global ETD Search

Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.

Results

Showing 1 to 20 of 131 for “"DAC"”.

  1. Durham All-Sky Camera (DAC)

    Zhang, LinDurham University2009

    … work, the prototype of a Durham all-sky camera (DAC) was designed and constructed for the purpose of monitoring the night sky of Durham. The DAC consisted of a Fujinon fish-eye lens coupled to a monochrome 640-by-480-pixel CCD camera (DMK-21BF04 model from the ImagingSource) housed in an 8-inch …

    durham Repository record

  2. Physical Unclonable Functions Based on Current Steering DAC and VCO

    Kapoor, GauravState University of New York at Buffalo2019

    M.S.

    buffalo Repository record

  3. Atmospheric Carbon Capture: A Review on Current Technologies and Analysis of Energy Consumption for Various Direct Air Capture (DAC) Systems

    Perskin, Jennifer

    <p>Carbon dioxide (CO<sub>2</sub>) capture is a crucial approach to reducing greenhouse gases in the atmosphere to directly combat climate change. Major components of the technology to desublimate CO<sub>2</sub> at cryogenic temperatures are mature and have the potential to be applied to build …

    embry-riddle Repository record

  4. Analysis of R-2R digital-to-analog converter with equal current switching

    Yeoh, Mei LingUniversity of Illinois at Urbana-Champaign2018

    … for such architecture, the active area of the DAC grows as the resolution increases due to higher matching requirement needed. A fully binary-weighted DAC suffers from well-known differential linearity problems and large switching glitches at the output, while a fully thermometer-coded DAC …

    uiuc Repository record

  5. Linearity and monotonicity of a 10-bit, 125 MHz, segmented current steering digital to analog converter

    Bittle, Charles C.University of North Texas2000

    … of the THS5651IDW digital to analog converter (DAC), a prototype of the future Texas Instruments TLV5651, 10-bit, 125 MHz communication DAC. Testing was conducted at the Texas Instruments facility on Forest Lane, Dallas, Texas. Texas Instruments provided test equipment, software and laboratory …

    unt Repository record

  6. Radio frequency digital to analog converter

    Luschas, Susan, 1975-Massachusetts Institute of Technology2003

    … high resolution digital-to-analog converters (DACs) is limited by distortion at the data switching instants. Inter-symbol interference (ISI), imperfect timing synchronization and clock jitter are all culprits. A DAC output current controlled by an oscillating waveform is proposed to mitigate …

    mit Repository record

  7. A Reconfigurable Digital-to-Analog Converter with Supply Invariant Linearity

    Chiolino, Nicholas J.2017

    … reconfigurable digital-to-analog converter (DAC) with supply independent linearity is presented. The process agnostic converter achieves wide supply range operation and re-configurability by being charge based. This converter consists of a 7-bit parallel digital input control core and an …

    arkansas Repository record

  8. Climate Impact Analysis of Direct Air Capture Deployment

    Housen, TaraMassachusetts Institute of Technology2024

    Direct air capture (DAC) is a negative emissions technology (NET) that can contribute to mitigating climate change impacts by extracting CO₂ from the atmosphere. Given its low technical maturity, uncertainties persist regarding DAC's cost, scalability, and life-cycle emissions. In this analysis I …

    mit Repository record

  9. Construction of a random signal with a specific Psd and a uniform Pdf

    Bringi, Venkatraghavan V

    … (DEM) flash digital to analog converter (DAC) can be improved by controlling the DEM DAC's interconnection network with a random signal that has a specific power spectral density (PSD) and a uniform probability distribution function (PDF). Many algorithms exist for generating a random …

    unlv Repository record

  10. A highly digital, reconfigurable and voltage scalable SAR ADC

    Yip, MarcusMassachusetts Institute of Technology2009

    … A capacitive digital-to -analog converter (DAC) in a split capacitor topology with a sub-DAC is used to minimize the DAC power and area. Top plate switches are used to decouple the MSB capacitors as resolution is scaled to avoid parasitic loading of the DAC. The DAC capacitors are laid out …

    mit Repository record

  11. Evaluating the Effect of Composition, Structure and Functionality on Atmospheric CO2 Adsorption in Porous Solid Sorbents

    Ramirez Isunza, Xakin MarianaVirginia Tech2025

    … technologies including direct air capture (DAC). The low concentration of CO2 in the atmosphere makes this separation more costly and energy intensive than other forms of carbon capture. For this reason, porous solid adsorbents have been proposed for DAC due to their low regeneration energy …

    vt Repository record

  12. Investigation and design of key circuit blocks in a 10 bit SAR ADC at 100 MS/s

    O'Sullivan, GeraldUniversity College Cork2020

    … circuit limitations of the switched capacitor DAC and the settling problems of the reference voltage associated with a switched capacitor scheme. The switched capacitor DAC is a critical block for overall ADC performance and various trade-offs are weighed up before discussing the layout of the …

    cork Repository record

  13. An analysis of interconnection network effects of dynamic element matching digital-to-analog converters

    Fu, Hui

    Digital-to-Analog Converters (DACs) convert digital signals into analog signals and thereby provide the link from digital systems to the analog world. Many DAC architectures use matched components to convert signals. However, practical DACs contain mismatched circuit components that cause nonlinear …

    unlv Repository record

  14. p53 acts to prevent the formation of pathological R-loops during epigenetic stress

    Hands, Emma LangdaleUniversity of Cambridge2023

    5-Azacytidine (Aza) and 5-Aza-2’-deoxycytidine (Dac) are the two primary therapeutics for the treatment of Acute Myeloid Leukaemia and some myelodysplastic syndromes. The two are frequently used interchangeably, surprisingly as their selectivity of de-methylation is unique from the other, however …

    cambridge Repository record

  15. Identifikation und funktionelle Analyse von Xdach1 und Xeya3 als morphogenetische Faktoren der Kopfentwicklung von Xenopus laevis

    Kriebel, Martin2012

    Dachshund (dac) und Eyes absent (eya) sind zwei Transkriptionsfaktoren, die unerlässlich für die korrekte Entwicklung der Komplexaugen in Drosophila melanogaster sind. In Vertebraten sind Homologe zu dac und eya isoliert worden, Hinweise auf eine Beteiligung an Prozessen der Neuralentwicklung bzw. …

    goettingen Repository record

  16. Dynamic Element Matching Techniques For Delta-Sigma ADCs With Large Internal Quantizers

    Nordick, Brent C.2004

    … to attenuate digital-to-analog converter (DAC) mismatch errors. One way to overcome these drawbacks is to segment the feedback signal, creating a "coarse" signal and a "fine" signal. This reduces the DEM circuit complexity, power dissipation, and size. However, it also creates additional …

    byu Repository record

  17. Entwicklung einer nicht-viralen upscalebaren Formulierung zur Transfektion humaner vaskulärer Endothelzellen und glatter Muskelzellen

    Kiefer, Karin

    … LipofectAmine Plus®, Lipofectin®, DC-30® und DAC-30® mit den drei Zellarten in Gegenwart von Serum getestet und Einflussfaktoren auf die Transfektionseffizienz untersucht. Zusätz-lich wurden Abhängigkeiten der Transfektion von der Zellart, Passagezahl der Zellen, Aggregatgröße, der …

    freiburg-diss Repository record

  18. Aplicação de diferentes processos físicos no creme de leite de cabra: efeito na estrutura e na lipólise convencional ou assistida por ultrassom

    Capela, Arthur Pomplio daUniversidade Federal de Viçosa2022

    … ultrassom (US), dispersão de alto cisalhamento (DAC), agitação (AGT), homogeneização convencional (HC) e homogeneização à alta pressão (HAP) na melhora da hidrólise enzimática de lipídios do creme de leite de cabra (CLC), seus efeitos na estrutura desse substrato, bem como os parâmetros cinéticos …

    brazil-ufv Repository record

  19. Feedback Control of Multi-Story Structures under Seismic Excitations

    Dai, YangVirginia Tech2002

    … control, the Disturbance Accommodating Control (DAC), and the hybrid LQG/DAC approaches, were successfully developed to actively mitigate the vibration of the multi-story structures subjected to the seismic disturbance. In addition, the Kalman filter was used as an optimal observer to estimate …

    vt Repository record

  20. Digital to Analog Converter Design using Single Electron Transistors

    Perry, JonathanVirginia Tech2005

    … circuit is the Digital to Analog Converter (DAC). DACs are present on many microprocessors and microcontrollers in use today and are necessary in many situations. While other SET circuits have been proposed, including ADCs, no DAC design exists in open literature. We propose three possible …

    vt Repository record

Page 1 of 7