Index Catalog // ScholarsArchive@OSU

Extending the applicability of implicit Monte Carlo Diffusion : frequency dependence and variance reduction using the difference formulation

Creator:: Cleveland, Mathew A.
Abstract:: The intent of this work is to extend Implicit Monte Carlo Diffusion (IMD)[Gen. 2001] to account for frequency dependence and to incorporate the difference formulation[Szo. 2005] as a source manipulation variance reduction technique. This work shows the derivation of the probabilities and the associated proofs which govern the frequency dependent...
Resource Type:: Masters Thesis
Full Text:: Implicit Monte Carlo Diffusion: Frequency Dependence and Variance Reduction Using the Difference

Modeling and analysis of spur structure of digital-to-time conversion based frequency synthesizers

Creator:: Talwalkar, Sumit A.
Abstract:: Frequency synthesizers are critical components of all communication systems. This thesis considers the issue of undesirable frequency spurs of a relatively recent type of frequency synthesis architecture called digital-to-time conversion (DTC). The DTC-based frequency synthesis architecture has important performance benefits over older frequency synthesizers, such as fast frequency switching, large...
Resource Type:: Dissertation
Full Text:: Conversion (DTC) Frequency Synthesizers

Temperature dependence of internal friction in silicon at low frequency

Creator:: Eliason, Jon Tate
Abstract:: This investigation represents a previously unreported method of measurement of internal friction in single crystals of silicon. The method consists of exciting a rectangular reed of silicon of uniform cross section into forced vibration at its resonant frequency. The end of the reed is silver plated and eddy currents induced...
Resource Type:: Masters Thesis
Full Text:: DEPENDENCE OF INTERNAL FRICTION IN SILICON AT LOW FREQUENCY by JON TATE ELIASON A THESIS submitted

Chemical reaction studies by frequency response methods

Creator:: Knudsen, Robert Allen
Abstract:: A method for measuring chemical reaction rates in order to distinguish between different reaction mechanisms is presented. This method was used to study zero -, first- and second -order reactions by analyzing the output response to a sinusoidal input of reactant concentrations in an isothermal continuous stirred tank reactor. The...
Resource Type:: Masters Thesis
Full Text:: reactions was made by H. M. Wight (10). The main interest was to investigate the frequency dependence of

Linear and nonlinear feedback linearization of radio frequency power amplifiers

Creator:: Bogya, Robert I.
Abstract:: Radio frequency (RF) power amplifiers (PA) are the most power consuming components of a mobile communications unit. They are used to convert the DC power from the battery into RF power delivered to the antenna. In a cell phone it becomes very important to use highly efficient power amplifiers, such...
Resource Type:: Masters Thesis
Full Text:: Frequency Power Amplifiers Abstract approved: _____________________________________________________

Extensions to Gaussian copula models

Creator:: Fang, Yan
Abstract:: A copula is the representation of a multivariate distribution. Copulas are used to model multivariate data in many fields. Recent developments include copula models for spatial data and for discrete marginals. We will present a new methodological approach for modeling discrete spatial processes and for predicting the process at unobserved...
Resource Type:: Dissertation
Full Text:: certain problems one would like to choose the Gaussian copula to model the dependence. Furthermore, most

Modelling of on-chip spiral inductors for silicon RFICs

Creator:: Melendy, Daniel
Abstract:: In high-frequency circuit design, performance is often limited by the quality of the passive components available for a particular process. Specifically, spiral inductors can be a major bottle-neck for Voltage-Controlled Oscillators (VCOs), Low-Noise Amplifiers (LNAs), mixers, etc. For designers to correctly optimize a circuit using a spiral inductor, several frequency-domain...
Resource Type:: Masters Thesis
Full Text:: -frequency circuit design, performance is often limited by the qual- ity of the passive components available

A comparison of two types of zero-crossing FM demodulators for wireless receivers

Creator:: McNeal, Jeff D.
Abstract:: A comparison of two novel demodulators. The first is a basic zero crossing demodulator, as introduced by Beards. The second is an approach proposed by Hovin. The two demodulators are compared to each other and to the conventional method of demodulation.
Resource Type:: Masters Thesis
Full Text:: vs Af for Ideal, ZCN and Hovin demodulators 22 3.4 Narrow Band FM SNR vs Sampling frequency for

Coupled circuit and device simulations for design of RF MEMS VCOs

Creator:: Behera, Manas
Abstract:: A new coupled circuit and electrostatic/mechanical simulator (COSMO) for the design of RF MEMS VCOs is presented in this thesis. The numerical solution of device level equations is used to accurately compute the capacitance of a MEMS capacitor. This coupled with a circuit simulator facilitates the simulation of circuits incorporating...
Resource Type:: Masters Thesis
Full Text:: MEMS variable capacitor. …………....35 �3.11 Frequency response of the input force to displacement

Inductors in high-performance silicon radio frequency integrated circuits : analysis, modeling, and design considerations

Creator:: Lutz, Richard D., Jr
Abstract:: Spiral inductors are a key component of mixed-signal and analog integrated circuits (IC's). Such circuits are often fabricated using silicon-based technology, owing to the inherent low-cost and high volume production aspects. However, semiconducting substrate materials such as silicon can have adverse effects on spiral inductor performance due to the lossy...
Resource Type:: Dissertation
Full Text:: dependence to account for the skin effect mode. The frequency-dependent series resistances incorporate the

Steady-state analysis techniques for coupled device and circuit simulation

Creator:: Hu, Yutao
Abstract:: The focus of this work is on the steady-state analysis of RE circuits using a coupled device and circuit simulator. Efficient coupling algorithms for both the time-domain shooting method and the frequency-domain harmonic balance method have been developed. A modified Newton shooting method considerably improves the efficiency and reliability of...
Resource Type:: Dissertation
Full Text:: . Efficient coupling algorithms for both the time- domain shooting method and the frequency-domain harmonic

Quantifying predator dependence in the functional response of generalist predators

Creator:: Novak, Mark, Wolf, Christopher, Coblentz, Kyle E., and Shepard, Isaac D.
Abstract:: A long-standing debate concerns how functional responses are best described. Theory suggests that ratio dependence is consistent with many food web patterns left unexplained by the simplest prey-dependent models. However, for logistical reasons, ratio dependence and predator dependence more generally have seen infrequent empirical evaluation and then only so in...
Resource Type:: Article
Full Text:: Quantifying predator dependence in the functional response of

Modeling Density Dependence in the Presence of Measurement Error

Creator:: Payton, Quinn
Abstract:: Density dependence is an ecological concept concerning the mechanisms of change in the size of a population. The inability to census ecological populations confounds approaches to identify and quantify the level of density dependence. Statistical tests which ignore the presence of measurement error tend to result in misspeci fied type...
Resource Type:: Dissertation
Full Text:: Dependence in the Presence of Measurement Error Abstract approved: Paul A. Murtaugh Virginia M. Lesser

Temperature dependence of the photorefractive effect in doped cadmium flouride

Creator:: Perreault, Nicki
Abstract:: Holographic techniques were used to study the optical properties and bistable behavior of Ga-doped cadmium fluoride. Ga impurities form bistable centers in CdF₂. Illumination causes a phototransformation from a deep to shallow center, which causes a change in the index of refraction. This change is caused by a redistribution of...
Resource Type:: Masters Thesis
Full Text:: Temperature dependence of the photorefractive effect in doped

Instability and temperature-dependence assessment of IGZO TFTs

Creator:: Hoshino, Ken
Abstract:: Amorphous oxide semiconductors (AOSs) are of great current interest for thin-film transistor (TFT) channel layer applications. In particular, indium gallium zinc oxide (IGZO) is under intense development for commercial applications because of its demonstrated high performance at low processing temperatures. The objective of the research presented in this thesis is...
Resource Type:: Masters Thesis
Full Text:: Computer Engineering presented on October 31, 2008. Title: Stability and Temperature-Dependence

Modeling of the orientation dependence of scanned HgCdTe infrared detectors

Creator:: Reudink, Mark D.
Abstract:: Mercury cadmium telluride is important in the detection of electromagnetic radiation in the eight to twelve micron atmospheric window for infrared imaging systems. High resolution infrared imaging systems use either large (256x256 element to 1024x1024 element) staring arrays or much smaller (1-6 element) scanned arrays in which the image is...
Resource Type:: Masters Thesis
Full Text:: Modeling of the orientation dependence of scanned HgCdTe

“SHOO FLY”: Reduce Pesticide Dependence with Knowledgeabout Drosophila suzukii

Creator:: Marek, Charlene Marie
Abstract:: Drosophila suzukii was a known pest of berries, grapes, and stone fruits in East Asia for almost a century. Yet in recent years it has successfully migrated throughout the United States, Mexico, and Europe due to globalized fruit trade. The invasive success of D. suzukii is causing unrest for fruit...
Resource Type:: Undergraduate Thesis
Full Text:: “SHOO FLY”: Reduce Pesticide Dependence with

Does Trade Dependence Matter? A Quantitative Analysis of the Effect of Trade Dependence on the Outcome of Economic Sanctions

Creator:: Shevtsova, Iana
Abstract:: Economic sanctions are widely used in the international arena in order to reconcile political conflicts and retain peace between countries. Most states prefer to use economic sanctions rather than military interventions as a more efficient tool to maintain political stability and protect their own interests. Nevertheless, sanctions are not always...
Resource Type:: Capstone Project
Full Text:: Does trade dependence matter? A quantitative analysis of the

Wavenumber-frequency structure of infragravity swash motions

Creator:: Holland, K. T. and Holman, Robert A.
Abstract:: Alongshore-separated time series of natural swash motions were obtained over a range of environmental conditions using a video technique. Although the frequency spectra and normalized wavenumber spectra for these motions were particularly bland, wavenumber-frequency spectra of these data showed clear partitions of infragravity band energy levels associated with various wave...
Resource Type:: Article

Low-Frequency Baroclinic Waves off Coastal Boundaries

Creator:: Grimshaw, R. and Allen, J. S.
Abstract:: The behavior of low-frequency baroclinic Rossby wave motion in the vicinity of coastal boundaries is investigated using linearized modulated wave theory in a stratified, constant-depth, equatorial β-plane ocean. A primary objective is to obtain an equation that describes large-scale, low-frequency pressure fluctuations along variable geometry ocean boundaries at all latitudes...
Resource Type:: Article

Soft Magnetic Composites for High Frequency Applications

Creator:: Song, Han
Abstract:: Soft magnetic composites, consisting of fine metallic particles in a non-magnetic, insulating matrix, have great potential for integrated inductor and antenna applications. The dielectric and magnetic properties of soft magnetic composites can be tailored by the choice of matrix as well as particle composition, size, and concentration for reduction in...
Resource Type:: Dissertation
Full Text:: ” ..................................................................................62 5.13 Ferromagnetic resonance frequency, fFMR, dependence of resonance field, Hr, in Ni-Fe

Analysis and modeling of monolithic on-chip transformers on silicon substrates

Creator:: Mayevskiy, Yevgeniy
Abstract:: Passive components, including spiral inductors and transformers, fabricated on silicon-based substrates are placing an increasing demand on radio-frequency integrated circuit (RFIC) design. Performance of the RFIC suffers from several non-ideal effects that must be taken into account in order to create a successful design. In particular, monolithic transformers can be...
Resource Type:: Masters Thesis
Full Text:: ) This approach, however, has the following weakness: frequency dependence of mu- tual inductance and

Analysis and modeling of single-ended and differential spiral inductors in silicon-based RFICs

Creator:: Watson, Adam C.
Abstract:: A new comprehensive wide-band compact modeling methodology for single-ended spiral inductors and differential spiral inductors is presented. The new modeling methodology creates an equivalent circuit model consisting of frequency-independent circuit elements for use in circuit simulators. A fast automated extraction procedure is developed for determining the circuit element values from...
Resource Type:: Masters Thesis
Full Text:: creates an equivalent circuit. model consisting of frequency-independent, circuit elements for use in

Broadband modeling of on-chip transformers for silicon RFICs

Creator:: Rapolu, Kavitha
Abstract:: Magnetically coupled passive transformers are increasingly integrated on-chip for various analog and radio frequency (RF) applications including direct current (DC) isolation, impedance transformation/matching, and conversion between single-ended and differential signals. A primary motivation for the on-chip integration of transformers is the overall size reduction and reduced cost. However, the performance...
Resource Type:: Masters Thesis
Full Text:: coupled passive transformers are increasingly integrated on-chip for various analog and radio frequency

Magnetically programmable surface acoustic wave devices for RFID applications

Creator:: Chin, Matthew
Abstract:: Magnetically programmable surface acoustic wave (MP SAW) devices were designed, fabricated and characterized in this thesis using integrated giant magnetoresistive (GMR) bits with interdigital reflectors. This provides a proof of concept of a novel storage element on radio frequency identification tags. Interdigital transducers (IDTs) on a piezoelectric substrate are used...
Resource Type:: Masters Thesis
Full Text:: . This provides a proof of concept of a novel storage element on radio frequency identi�cation tags

High frequency water vapor density measurements using the beat frequency method

Creator:: Elorriaga Montenegro, Estefania
Abstract:: This document describes the design and deployment of a first generation water vapor density sensing unit, the HumiSense. This device is based on an open, air-filled capacitor which is part of a resonant circuit. The frequency of the resonant circuit mixed with a fixed frequency oscillator is the basis of...
Resource Type:: Masters Thesis
Full Text:: in Biological and Ecological Engineering presented on June 15, 2012. Title: High Frequency

Femtosecond Stimulated Raman Line Shapes: Dependence on Resonance Conditions of Pump and Probe Pulses

Creator:: Chen, Cheng, Zhu, Liang-dong, and Fang, Chong
Abstract:: Resonance enhancement has been increasingly employed in the emergent femtosecond stimulated Raman spectroscopy (FSRS) to selectively monitor molecular structure and dynamics with improved spectral and temporal resolutions and signal-to-noise ratios. Such joint efforts by the technique- and application-oriented scientists and engineers have laid the foundation for exploiting the tunable FSRS...
Resource Type:: Article
Full Text:: . Chem. Phys. (2018): <8000 words Femtosecond Stimulated Raman Line Shapes: Dependence on Resonance

The spatial-scale dependence of the observed anisotropy of reflected and emitted radiation

Creator:: Ye, Qian
Abstract:: The Earth Radiation Budget Experiment (ERBE) uses Angular Dependence Models (ADMs) to convert satellite observed radiances to radiative fluxes at the top of the atmosphere. Owing to errors in scene identification and to the relationship between the spatial scales of cloud systems and the spatial resolution of the ERBE scanner,...
Resource Type:: Dissertation
Full Text:: Dependence of the Observed Anisotropy of Reflected and Emitted Radiation //2 / Abstract _____ James A

Dependence Modeling in the French Monkfish Market: A Copula Functions Approach

Creator:: Rautureau, Nicolas, Royer, Zahra, and Perraudeau, Yves
Abstract:: Extended abstract.
Resource Type:: Other
Full Text:: dependence level observed between Sizes 30 and 40 is relatively high if we consider the daily frequency of

Absorption and attenuation of visible and near-infrared light in water: dependence on temperature and salinity

Creator:: Pegau, W. Scott, Gray, Deric, and Zaneveld, J. Ronald V.
Abstract:: We have measured the absorption coefficient of pure and salt water at 15 wavelengths in the visible and near-infrared regions of the spectrum using WETLabs nine-wavelength absorption and attenuation meters and a three-wavelength absorption meter. The water temperature was varied between 15 and 30 °C, and the salinity was varied...
Resource Type:: Article
Full Text:: water: dependence on temperature and salinity Absorption and attenuation of visible and near-infrared

Depth-dependence of surf zone eddies : a study at Duck, NC

Creator:: Aiken, Rebecca A.
Abstract:: Surf zone eddies (f < 0.01 Hz) are important in nearshore mixing, shoreline erosion, the distribution of pollutants, and ecological processes, such as offshore transport of larvae. Surf zone eddies have traditionally been treated as two-dimensional features with horizontal length scales larger than the local water depth. Studies by Lippmann...
Resource Type:: Masters Thesis
Full Text:: -Dependence of Surf Zone Eddies: a Study at Duck, NC. Abstract approved

Dependence of oxygen vacancy concentration in zirconia on processing parameters and reducing conditions

Creator:: Lee, Theresa A.
Abstract:: ¹¹¹In/Cd perturbed angular correlation (PAC) gamma spectroscopy was used to study the point defect thermodynamics of tetragonal zirconia (t-zirconia). PAC can be used to measure, among other things, oxygen vacancy defect concentrations in t-zirconia. Higher than expected concentrations of oxygen vacancies in undoped samples were found using PAC. It was...
Resource Type:: Dissertation
Full Text:: Dependence of oxygen vacancy concentration in zirconia on

Dynamics of a recovering Arctic bird population: the importance of climate, density dependence, and site quality

Creator:: Bruggeman, Jason E., Swem, Ted, Andersen, David E., Kennedy, Patricia L., and Nigro, Debora
Abstract:: Intrinsic and extrinsic factors affect vital rates and population-level processes, and understanding these factors is paramount to devising successful management plans for wildlife species. For example, birds time migration in response, in part, to local and broadscale climate fluctuations to initiate breeding upon arrival to nesting territories, and prolonged inclement...
Resource Type:: Article
Full Text:: importance of climate, density dependence, and site quality Dynamics of a recovering Arctic bird population

Dynamics of a recovering Arctic bird population: the importance of climate, density dependence, and site quality

Creator:: Bruggeman, Jason E., Swem, Ted, Andersen, David E., Kennedy, Patricia L., and Nigro, Debora
Abstract:: Intrinsic and extrinsic factors affect vital rates and population-level processes, and understanding these factors is paramount to devising successful management plans for wildlife species. For example, birds time migration in response, in part, to local and broadscale climate fluctuations to initiate breeding upon arrival to nesting territories, and prolonged inclement...
Resource Type:: Article
Full Text:: importance of climate, density dependence, and site quality Dynamics of a recovering Arctic bird population

Temperature dependence of exciton and charge carrier dynamics in organic thin films

Creator:: Platt, A. D., Kendrick, M. J., Loth, M., Anthony, J. E., and Ostroverkhova, O.
Abstract:: We report on physical mechanisms behind the temperature-dependent optical absorption, photoluminescence (PL), and photoconductivity in spin-coated films of a functionalized anthradithiophene (ADT) derivative, ADT-triethylsilylethynyl (TES)-F, and its composites with C₆₀ and another ADT derivative, ADT-TIPS-CN. Measurements of absorption and PL spectra, PL lifetimes, and transient photocurrent were performed at temperatures...
Resource Type:: Article
Full Text:: PHYSICAL REVIEW B 84, 235209 (2011) Temperature dependence

Measuring the Electric Field Dependence of Photocurrent Quantum Yield in Suspended Carbon Nanotube pn Junctions

Creator:: McCulley, Daniel R.
Abstract:: In nanoscale materials, the Coulombic interaction between electrons are stronger than in bulk materials. These stronger interactions, caused by confinement and reduced dielectric screening, have interesting consequences for light-matter interactions. In carbon nanotubes (CNTs), strong interactions can enhance the impact ionization process, and thus assist photocurrent generation in CNTs. Conversely,...
Resource Type:: Dissertation
Full Text:: presented on March 12, 2020 Title: Measuring the Electric Field Dependence of Photocurrent Quantum

A Likert scaling of student value statements, field independence-field dependence, and experimentally induced change

Creator:: Paeth, Charles August
Abstract:: In recent years, changes in values have occurred in major elements of the population, most notably among the late adolescents and the college students. That this holds portent for the future was referred to by Revel in WITHOUT MARX OR JESUS when he said, "The American revolution is without doubt...
Resource Type:: Dissertation
Full Text:: RESERVED A Likert Scaling of Student Value Statements, Field Independence-Field Dependence, and

The Wavenumber–Frequency Content of Resonantly Excited Equatorial Waves

Creator:: Durland, Theodore S. and Farrar, J. Thomas
Abstract:: The theoretical resonant excitation of equatorial inertia–gravity waves and mixed Rossby–gravity waves is examined. Contrary to occasionally published expectations, solutions show that winds that are broadband in both zonal wavenumber and frequency do not in general produce peaks in the wavenumber–frequency spectrum of sea surface height (SSH) at wavenumbers associated...
Resource Type:: Article
Full Text:: detail the wavenumber–frequency dependence of resonant equatorial inertia–gravity and mixed Rossby

A variable frequency spectrophone study of carbon monoxide

Creator:: Woodmansee, Wayne Earl
Resource Type:: Dissertation
Full Text:: A Variable Frequency Spectrophone Study of Carbon Monoxide

Plasma oscillations at microwave frequencies in a static magnetic field

Creator:: Nelson, Donald John
Resource Type:: Dissertation
Full Text:: observations of plana oscillations Dependence of oscillation wavelengths on gas pressure and filament

A slotted line for ultra-high-frequency measurements

Creator:: Peoples, Samuel Ray
Resource Type:: Masters Thesis
Full Text:: A slotted line for ultra-high-frequency measurements A

Female elk contacts are neither frequency nor density dependent

Creator:: Cross, P. C., Creech, Tyler G., Ebinger, M. R., Manlove, K., Irvine, K., Henningsen, J., Roberson, J., Scurlock, B. M., and Creel, S.
Abstract:: Identifying drivers of contact rates among individuals is critical to understanding disease dynamics and implementing targeted control measures. We studied the interaction patterns of 149 female elk (Cervus canadensis) distributed across five different regions of western Wyoming over three years, defining a contact as an approach within one body length...
Resource Type:: Article
Full Text:: intermediate to density or frequency dependence. We expect this to be a general pattern for many host

An ultra low power frequency reference for timekeeping applications

Creator:: Oporta, Hector Ivan
Abstract:: An ultra low power crystal oscillator that provides a frequency reference for battery powered timekeeping applications is presented. An amplitude control circuit is employed to ensure that minimum current is consumed. A subthreshold voltage regulator provides a supply voltage for the oscillator with minimum current consumption. The oscillator and regulator...
Resource Type:: Masters Thesis
Full Text:: frequency dependence with respect to time and temperature is very stable makes the quartz crystal the

A programmable BiCMOS transconductance-capacitor filter for high frequencies

Creator:: Beck, Jeffery S.
Abstract:: With advancements in CMOS technology, high speed analog circuits that were traditionally implemented with discrete circuit components can now be made monolithically. Antialiasing filters for video signals as well as signal conditioning filters in high speed communication channels are examples of applications where high frequency integrated circuits are now feasible....
Resource Type:: Masters Thesis
Full Text:: applications where high frequency inte- grated circuits are now feasible. Transconductance-Capacitor or Gm-C

A continuous time frequency translating delta Sigma Modulator

Creator:: Pulincherry, Anurag
Abstract:: This thesis presents a continuous time bandpass delta sigma modulator with frequency translation inside the delta sigma loop. The input IF signal is down converted to baseband after amplification by a low Q, wideband bandpass resonator. The down converted IF signal is digitized by a continuous time, second order lowpass...
Resource Type:: Masters Thesis
Full Text:: : A Continuous Time Frequency Translating Delta Sigma Modulator. Abstract approved: Un-Moon This

An integrated MOS voltage-controlled low frequency oscillator

Creator:: Araghi, Mehdi Najm
Abstract:: In this work the use of linear MOS integrated circuits in the design of a phase-shift oscillator is presented. By multiplying the capacitors of the RC feedback network through the use of the Miller effect, large effective capacitance values are obtained which enable the low frequency operation of the oscillator....
Resource Type:: Masters Thesis
Full Text:: An integrated MOS voltage-controlled low frequency

Frequency-domain, parameter estimation for a brushless, doubly-fed machine

Creator:: Ramchandran, Ashok
Abstract:: A Brushless, Doubly Fed Machine (BDFM) attempts to combine the advantages of conventional induction and synchronous types of electrical machines by its unique architecture. The validation of BDFM designs in an actual test environment requires the estimation of the BDFM model parameters from actual experimentation. Accurate values for the parameters...
Resource Type:: Dissertation
Full Text:: Frequency-domain, parameter estimation for a brushless

Electrical recommendations and formulas for metal fill in radio-frequency integrated circuits

Creator:: Gaskill, Steven
Abstract:: With increasing transistor operating frequencies, interconnects and passive devices are becoming performance limiters in integrated circuit (IC) designs. To combat this, the interconnect layers above the active silicon are trending toward low-κ dielectrics and Cu metallization. The use of these new materials has popularized chemical mechanical polishing (CMP) to planarize...
Resource Type:: Masters Thesis
Full Text:: will ignore the loss and frequency dependence of the dielectric. We will also be ignoring the

The Art of Reducing Coastal Hazard Complexity: Coupling Physics and Probability to Understand Extremes, Variability, and Climate-dependence

Creator:: Anderson, Dylan L.
Abstract:: Coastal hazards are the result of numerous physical processes cumulatively causing water levels to flood and erode the land. The waves, storm surges, tides, and run-off contributing to elevated water levels are each the product of chaotic and random weather patterns. These stochastic weather patterns dissipate energy in Earth's climate...
Resource Type:: Dissertation
Full Text:: , and Climate-dependence Abstract approved: Peter Ruggiero Coastal hazards are the result of numerous

Performance-improving techniques for wireless systems

Creator:: Ozdural, Orhan Can
Abstract:: In this thesis, maximum likelihood Doppler frequency estimation and phase noise suppression algorithms for Orthogonal Frequency Division Multiplexing (OFDM) systems are presented. A novel handover decision algorithm for wireless systems, called predictive base station switching (PBSS), is also introduced. The maximum Doppler Frequency is the ratio of the speed of...
Resource Type:: Dissertation
Full Text:: , maximum likelihood Doppler frequency estimation and phase noise suppression algorithms for Orthogonal

Performance enhancement techniques for low power digital phase locked loops

Creator:: Elshazly, Amr
Abstract:: Desire for low-power, high performance computing has been at core of the symbiotic union between digital circuits and CMOS scaling. While digital circuit performance improves with device scaling, analog circuits have not gained these benefits. As a result, it has become necessary to leverage increased digital circuit performance to mitigate...
Resource Type:: Dissertation
Full Text:: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.1 Frequency Synthesizers Applications

Design and Analysis of Distributed Resource Allocation Techniques for Large-Scale Dynamic Spectrum Access Networks

Creator:: NoroozOliaee, MohammadJavad
Abstract:: The widespread use of wireless devices that we have recently been witnessing, such as smartphones, tablets, laptops, and wirelessly accessible devices in general, is causing an unprecedented growth in the required amount of the wireless radio spectrum. On the other hand, the spectrum resource has, for the last several decades,...
Resource Type:: Dissertation
Full Text:: allocation methods, thus leaving plenty of unused spectrum opportunities along both the time and frequency

Effects of antecedent hydrologic conditions, time dependence, and climate cycles on the suspended sediment load of the Salinas River, California

Creator:: Gray, Andrew B., Pasternack, Gregory B., Watson, Elizabeth B., Warrick, Jonathan A., and Goñi, Miguel A.
Abstract:: See pdf for abstract.
Resource Type:: Article
Full Text:: dependence, and climate cycles on the suspended sediment load of the Salinas River, California Effects of

Time dependence of triplet-singlet excitation transfer from compact poly rA to bound dye at 77 K

Creator:: Pearlstein, R. M., Van Nostrand, F., and Nairn, J. A.
Abstract:: The nonexponential phosphorescence decay of a highly folded form of poly-riboadenylic acid (poly rA) with noncovalently bound dye is explained by a novel application of a well-known theory of electronic excitation transfer based on the Förster mechanism. This theory, originally used to describe singlet-singlet energy transfer from donor molecules to...
Resource Type:: Article
Full Text:: Time dependence of triplet-singlet excitation

Temperature Dependence of Cu₃₋xSb₁₋[subscript y]M[subscript y]S₄ (M=Sn,Ge) Resistivity and Thermopower

Creator:: Mutch, Joshua
Abstract:: An experimental apparatus is modified to allow measurements of the Seebeck coefficient and resistivity to be taken simultaneously. This apparatus is designed for bulk and thin film samples between temperatures of 10 K and 300 K. The apparatus is constructed such that these simultaneous measurements do not interfere with each...
Resource Type:: Undergraduate Thesis
Full Text:: Temperature Dependence of Cu3-x(Sb1-yMy)S4 (M

Spatial heterogeneity, meta-analysis and spatial dependence : three essays on environmental valuation and spatial land management decisions

Creator:: Bu, Meidan
Abstract:: This dissertation consists of three essays that collectively address the importance of accounting for spatial heterogeneity and spatial dependence of environmental assets and natural resources in policy making. The first essay examines the value of different wetland ecosystem services using an expanded meta-dataset of valuation studies in North America. The...
Resource Type:: Dissertation
Full Text:: . Title: Spatial Heterogeneity, Meta-analysis and Spatial Dependence: Three Essays on Environmental

Frequency-Dependent Rheological Characterization of Viscoelastic Materials Using Magnetic Nanoparticle Probes

Creator:: Myers, Renee C.
Abstract:: Extending rheological characterization methods to very small length scales is of interest. AC susceptometry using magnetic nanoparticle probes has been proposed for measurement of frequency-dependent rheological properties at the nanoscale. As this technique has been primarily used for ideally Newtonian fluids, this research aimed to extend this technique to viscoelastic...
Resource Type:: Honors College Thesis
Full Text:: Frequency-Dependent Rheological Characterization of

Water content and electrical conductivity profile measurements for dispersive media using enhanced time domain and frequency domain models

Creator:: Flugstad, Benjamin A.
Abstract:: Water conservation and water quality are rapidly increasing in importance in all areas of the world. The ability to accurately measure soil water content and salinity, over a wide variety of conditions, is key to meeting this need. A set of forward prediction models and waveform interpretation algorithms to extract...
Resource Type:: Dissertation
Full Text:: dispersive frequency dependence and loss. These models interpolate between the physical upper and lower

Angle of emergence of seismic P waves and its variation with frequency

Creator:: Souders, Robert Hunter
Abstract:: The vertical and radial components of a seismic P wave can be decomposed by a Fourier transform into two sets of nonterminating sinusoidal waves with one set for each component. The tangent of the vertical transform divided by the radial transform gives by definition he apparent angle of emergence for...
Resource Type:: Masters Thesis
Full Text:: seismologist, Suzuki (1932), generalized the peak ampli- tude method to include frequency dependence by

Low frequency 1/f noise of p-MOS, bipolar and lateral bipolar transistors

Creator:: Cheng, Mark
Abstract:: This thesis deals with 1/f noise in p-MOS, bipolar, and lateral bipolar transistors. Experimental measurements determine the appropriate 1/f noise for MOSFET's, bipolar transistors and lateral bipolar transistors. The literature on 1/f noise in p-MOSFETs, bipolar transistors and lateral bipolar transistors is reviewed. The two main sources of low frequency...
Resource Type:: Masters Thesis
Full Text:: Component Many authors have studied the low frequency 1/f noise of bipolar transistor current dependence

Investigating Low-Frequency Vibrations in Condensed Matter Using Time-Resolved Third-Harmonic Generation Spectroscopy

Creator:: Wang, Liang
Abstract:: In this thesis, I present a new method we developed to study low frequency (< 700 cm⁻¹) vibrational dynamics: Time-resolved third-harmonic generation (TRTHG) spectroscopy. Among a variety of vibrational spectroscopy techniques, TRTHG differentiates itself with robustness, versatility, and simplicity. In TRTHG experiment, that involves only two ultrashort laser pulses, the...
Resource Type:: Masters Thesis
Full Text:: Investigating Low-Frequency Vibrations in Condensed Matter

A study of the temperature dependence of the DC current-voltage characteristics of AlGaAs/GaAs heterojunction bipolar transistors with application to bandgap voltage reference sources

Creator:: Gazeley, William G.
Abstract:: The bandgap voltage reference technique, as implemented in Silicon technology, has evolved to a state of advanced development and become the method of choice for temperature independent voltage biasing in integrated circuits. The heterojunction bipolar transistor (HBT), fabricated from epitaxial A1GaAs /GaAs, is developing to a point where basic circuit...
Resource Type:: Masters Thesis
Full Text:: A study of the temperature dependence of the DC current

Wavenumber–Frequency Spectra of Inertia–Gravity and Mixed Rossby–Gravity Waves in the Equatorial Pacific Ocean

Creator:: Farrar, J. Thomas and Durland, Theodore S.
Abstract:: In the 1970s and 1980s, there was considerable interest in near-equatorial variability at periods of days to weeks associated with oceanic equatorial inertia–gravity waves and mixed Rossby–gravity waves. At that time, the measurements available for studying these waves were much more limited than today: most of the available observations were...
Resource Type:: Article
Full Text:: wavenumber and frequency dependent, but (1)–(2) express all of the forcing dependence. Basically, the

Dependence of secondary structure of biopolymers on environment : a circular dichroism study of equivocal amino acid sequences in proteins and of left-handed DNA

Creator:: Zhong, Lingxiu
Resource Type:: Dissertation
Full Text:: Dependence of secondary structure of biopolymers on

Random dopants and low-frequency noise reduction in deep-submicron MOSFET technology

Creator:: Miller, Drake A.
Abstract:: The future of mixed-signal, memory, and microprocessor technologies are dependent on ever increasing analog and digital integration, higher cell densities, and demand for more processing power. As a result MOSFET device dimensions continue to shrink to meet these demands. A side effect of device scaling is increased variability at each...
Resource Type:: Dissertation
Full Text:: that is generalized by a single parameter with no frequency dependence. Another term that can be used

Low frequency noise and the upconverted phase noise effects in NMOSFET circuits

Creator:: Xie, Dingming
Resource Type:: Masters Thesis
Full Text:: demonstrate the phase noise caused by low frequency flicker noise has a 1/ f 3 dependence on the offset

Mid-frequency sound propagation through internal waves at short range with synoptic oceanographic observations

Creator:: Rouseff, Daniel, Tang, Dajun, Williams, Kevin L., Wang, Zhongkang, and Moum, James N.
Abstract:: Preliminary results are presented from an analysis of mid-frequency acoustic transmission data collected at range 550m during the Shallow Water 2006 Experiment. The acoustic data were collected on a vertical array immediately before, during, and after the passage of a nonlinear internal wave on 18 August, 2006. Using oceanographic data...
Resource Type:: Article
Full Text:: /1.2963097� Published Online 28 August 2008 J. Acoust. Soc Downloaded 20 Jul 2010 to 1 Mid-frequency sound

Low frequency variations in the sea level and currents over the Oregon continental shelf

Creator:: Cutchin, David L.
Abstract:: Sea level and current observations made over the Oregon continental shelf exhibit wavelike characteristics in a frequency band from approximately 0.15 to 0.45 cpd. In a narrow band around 0.22 cpd the current-sea level relationship is consistent with the predicted values for the first mode of Robinson's continental shelf waves....
Resource Type:: Dissertation
Full Text:: FREQUENCY VARIATIONS IN THE SEA LEVEL AND CURRENTS OVERAHE OREGON CONTINENTAL SHELF Abstract approved

Effect of vibration frequency on the internal friction of cold-worked copper

Creator:: Larson, Milton Byrd
Resource Type:: Masters Thesis
Full Text:: Effect of vibration frequency on the internal friction of

Temperature distribution in white oak laminated timbers heated in a high-frequency electric field

Creator:: Dunlap, M. E., Bell, Earl Ross, and Forest Products Laboratory (U.S.)
Resource Type:: Technical Report
Full Text:: HIGH-FREQUENCY ELECTRIC FIELD January 1947 (No)121638 UNITED STATES DEPARTMENT OF AGRICULTURE 010

Analytical model of GaAs MESFET output conductance with frequency and temperature dependent parameters

Creator:: Lam, Steven C. F.
Abstract:: The output characteristics of a conventional GaAs depletion-mode MESFET device have been investigated. One of the important parameters of the small-signal GaAs MESFET model, g[subscript ds] (output conductance), is shown to be frequency and temperature dependent. Variations in g[subscript ds] are a serious problem in many analog and digital circuits...
Resource Type:: Masters Thesis
Full Text:: that the frequency dependence of the output conductance of a GaAs MESFET is intimately related to the

Surface Wave Effects on High-Frequency Currents over a Shelf Edge Bank

Creator:: Wijesekera, H. W., Wang, D. W., Teague, W. J., Jarosz, E., Rogers, W. E., Fribance, D. B., and Moum, J. N.
Abstract:: Several acoustic Doppler current profilers and vertical strings of temperature, conductivity, and pressure sensors, deployed on and around the East Flower Garden Bank (EFGB), were used to examine surface wave effects on high-frequency flows over the bank and to quantify spatial and temporal characteristic of these high-frequency flows. The EFGB,...
Resource Type:: Article
Full Text:: jpoD120197 1627..1647 Surface Wave Effects on High-Frequency

Effect of PZT driving waveform and frequency on meniscus shape and dropon-demand droplet formation parameters

Creator:: Yang, Guozhong
Abstract:: For piezoelectric stack (PZT) driven droplet generator, the driving waveform and driving frequency effect on liquid filament shape and droplet characteristics have been experimentally studied. The experimental study was based on a PZT driven droplet generator with known geometric design parameters and working fluid properties. A lumped-element-model (LEM) constructed to...
Resource Type:: Dissertation
Full Text:: on May 25, 2007. Title: Effect of PZT Driving Waveform and Frequency on Meniscus Shape and Drop

Simplified WECC modeling for frequency response, wind integration, and energy storage

Creator:: Bhattacharji, Pranathi
Abstract:: The primary objective of a grid is to maintain a balance between generation and load. If these quantities are not in balance with each other, severe damages such as voltage fluctuations, low power quality, power outages or even cascaded blackouts may occur. Hence one of the primary factors that holds...
Resource Type:: Masters Thesis
Full Text:: September 11, 2014. Title: Simplified WECC Modeling for Frequency Response, Wind Integration, and

A signal-processed antenna system and the simulation of the effects of balanced-mixer frequency conversion

Creator:: Spencer, Kenneth Edward
Abstract:: In this paper a signal-processed antenna and receiver system is proposed and analyzed. In addition, a simulation of the balanced-mixer portion of the processing system is made on a hybrid computer to find the bandwidth limitations for the total system. The system utilizes both the amplitude and phase information of...
Resource Type:: Dissertation
Full Text:: approximately two percent. Moreover, the simulation data will show that the greatest frequency dependence of

The study of active sites and bubble formation frequency in nucleate boiling heat transfer

Creator:: Aoki, Tadao
Abstract:: The heat-transfer mechanism studied in this experiment was pool boiling from a flat horizontal surface facing upward with the bulk liquid at its saturation temperature. The hot-film anemometer probe was introduced to boiling heat-transfer analysis as a possible device for counting active nucleation sites and for other investigations such as...
Resource Type:: Masters Thesis
Full Text:: The Study of active sites and bubble formation frequency

Detection and diagnosis of parameters change in linear system using time-frequency transformation

Creator:: Park, Dae-hyun
Abstract:: A systematic optimization of the Cohen class time-frequency transformation for detecting the parameters change is developed. The local moments approach to change detection is proposed and a general formula for the local moments is derived. The optimal kernel functions of the time-frequency transformation are determined based on the combined criteria...
Resource Type:: Dissertation
Full Text:: system using time-frequency transformationv AN ABSTRACT OF THE THESIS OF Dae-Hyun Park for the degree

Watershed and climate influences on flood frequency distributions in the Willamette River basin

Creator:: Tolle, Timothy Victor
Abstract:: Problem areas identified are: The needs a) to develop curve fitting procedures to estimate flood flow distributions; b) to incorporate precipitation data into frequency analysis procedures; and c) to better define flood potentials for ungauged streams. Closely related to the above, it is noted that variables commonly used to estimate...
Resource Type:: Dissertation
Full Text:: Watershed and climate influences on flood frequency

Tidal-band and high-frequency internal variability on the central Oregon inner shelf

Creator:: Suanda, Sutara H.
Abstract:: Analogous to ocean surface waves, waves in the ocean interior also experience steepening, breaking, and dissipation as they approach the coastline. Much less is known about this internal beach. In this work, extensive moored Acoustic Doppler Current Profiler and temperature/salinity data together with optical remote sensing are combined to describe...
Resource Type:: Dissertation
Full Text:: High-Frequency Internal Variability on the Central Oregon Inner Shelf Abstract approved: John A

Childhood risk as a predictor of frequency of contact between incarcerated fathers and their children

Creator:: Galardi, Tasha R.
Abstract:: U.S. incarceration rates have soared over the past three decades and the demographic characteristics of those who end up in prison are a reflection of the nation's structural inequality. Incarcerated fathers are a socially disadvantaged group and spending time in prison compounds already significant risk factors that these men experienced...
Resource Type:: Masters Thesis
Full Text:: : Childhood Risk as a Predictor of Frequency of Contact between Incarcerated Fathers and Their Children

Probing Structure, Selectivity, and Orientation of Biomolecules to Cell Membranes by Sum Frequency Generation

Creator:: Golbek, Thaddeus W.
Abstract:: Cell membranes act as barriers against unwanted movement of ions and biomolecules and are complex surfaces littered with protein channels, ion channels, cholesterol, and a myriad of different proteins. While this surface is extremely well studied, there is still much we do not know. The work in this dissertation demonstrates...
Resource Type:: Dissertation
Full Text:: Biomolecules to Cell membranes by Sum Frequency Generation

High-frequency measurement of seawater chemistry: Flow-injection analysis of macronutrients

Creator:: Hales, Burke, van Geen, Alexander, and Takahashi, Taro
Abstract:: We adapted a commercially available flow‐injection autoanalyzer (Lachat Quik‐Chem 8000) to measure seawater nitrate concentrations at a rate of nearly 0.1 Hz and phosphate and silicate concentrations at a rate half that. Several minor improvements, including reduced sample‐loop size, high sample flushing rate, modified carrier chemistry, and use of peak...
Resource Type:: Article
Full Text:: -frequency measurement of seawater chemistry: Flow-injection analysis of macronutrients. Limnol. Oceanogr

Spherical Au Nanoparticle Interaction with Lipid Monolayers Probed with Sum Frequency Generation Spectroscopy

Creator:: Faase, Ryan A.
Abstract:: Nanoparticles have become more prevalent from their use in sunscreen to antimicrobial agents in socks. In light of these applications, gaining a fundamental understanding of how NPs interact with humans is crucial for their future. Specifically, how cells interact with NPs and what factors drive the modes of cellular uptake....
Resource Type:: Masters Thesis
Full Text:: with Sum Frequency Generation Spectroscopy Abstract approved

High frequency temperature and velocity fluctuations in the atmospheric boundary layer

Creator:: Williams, Richard Melton
Resource Type:: Dissertation
Full Text:: ) Title: HIGH FREQUENCY TEMPERATURE AND VELOCITY FLUCTUATIONS IN THE ATMOSPHERIC BOUNDARY LAYER

Scalable Array Transceivers with Wide Frequency Tuning Range for Next Generation Radios

Creator:: Agrawal, Abhishek
Abstract:: Scalable array transceivers with wide frequency tuning range are attractive for next-generationradios. Key challenges for such radios include generation of LO signals with widefrequency tuning range, scalable synchronization between multiple array unit cells andtolerance to in-band and out-of-band interferers. This thesis presents approaches toaddress these challenges in commercial CMOS technologies.The...
Resource Type:: Dissertation
Full Text:: . Title: Scalable Array Transceivers with Wide Frequency Tuning Range for Next Generation Radios

Synthesis and characterization of new optical frequency converters and phosphor hosts

Creator:: Akella, Annapoorna
Resource Type:: Dissertation
Full Text:: Synthesis and characterization of new optical frequency

Algorithms and simulators for coupled device/circuit simulation

Creator:: Dudar, Taras
Abstract:: Algorithms and simulators comprised of SPICE3 as a circuit level simulator and two device simulators EOFLOW and PROPHET for accurate simulation of new types of devices are presented in this thesis. An integration of EOFLOW with SPICE3 creates a capability for efficient simulation of a system containing interconnected electroosmotic flow...
Resource Type:: Masters Thesis
Full Text:: -signal frequency domain analysis. Applications of this analysis are demonstrated in the noise coupling

Unobserved Heterogeneity and Spatial Correlation: Statistical and Econometric Analyses of Heavy-Vehicle Hard Braking and Crash Frequency by Crash Type

Creator:: Anderson, Jason C.
Abstract:: This dissertation provides a comparison of statistical and econometric frameworks, using a previously unused freight data source, to study crash frequency by crash type and heavy-vehicle hard braking in Oregon. Hard braking can serve as a proxy for several factors, one of which is safety. Therefore, with the hard braking...
Resource Type:: Dissertation
Full Text:: Hard Braking and Crash Frequency by Crash Type Abstract approved

A new multisource and high-frequency approach to measuring δ²H and δ¹⁸O in hydrological field studies

Creator:: Pangle, Luke A., Klaus, Julian, Berman, Elena S. F., Gupta, Manish, and McDonnell, Jeffrey J.
Abstract:: Measurements of δ²H and δ¹⁸O in isotope-based field studies have fundamentally improved our understanding of water flow and transport time scales in soils and headwater catchments. Until recently, however, technical constraints have limited the temporal resolution at which water samples could be collected and analyzed. We introduce a new sample...
Resource Type:: Article
Full Text:: ²H and δ¹⁸O in hydrological field studies A new multisource and high-frequency approach to

High-frequency measurement of partial pressure and total concentration of carbon dioxide in seawater using microporous hydrophobic membrane contractors

Creator:: Hales, Burke, Chipman, David, and Takahashi, Taro
Abstract:: To investigate CO₂ chemistry in ocean water with greater time-space resolutions, we systems, which have state-of-the-art precision but an order of magnitude or better analysis, for carbon dioxide partial pressures (Pco₂) and total carbon dioxide Pco₂ system was based on equilibration of a CO₂-free carrier gas stream with seawater sample...
Resource Type:: Article
Full Text:: Burke Hales, David W Chipman, Taro T Takahashi, High-frequency

Characterization of super-low frequency electromagnetic fields produced by an undersea transmission cable in a homogeneous fluid

Creator:: Pommerenck, Jordan
Abstract:: Offshore renewable energy, an untapped energy resource in the United States, has the potential to stimulate job creation and diversify the world’s energy portfolio. Transmission cables are used to transfer electrical power to the mainland. These cables carry a harmonic time-dependent current. This current in turn generates both an electric...
Resource Type:: Undergraduate Thesis
Full Text:: Characterization of super-low frequency electromagnetic

Electrical and thermal properties of Pacific whiting surimi paste and stabilized mince in multi-frequency ohmic heating

Creator:: Wu, Han
Resource Type:: Masters Thesis
Full Text:: paste and stabilized mince in multi-frequency ohmic heating AN ABSTRACT OF THE THESIS OF Han Wu for

Observation of sum-frequency-generation-induced cascaded four-wave mixing using two crossing femtosecond laser pulses in a 0.1 mm beta-barium-borate crystal

Creator:: Liu, Weimin, Zhu, Liangdong, and Fang, Chong
Abstract:: We demonstrate the simultaneous generation of multicolor femtosecond laser pulses spanning the wavelength range from UV to near IR in a 0.1 mm Type I beta-barium borate crystal from 800 nm fundamental and weak IR super-continuum white light (SCWL) pulses. The multicolor broadband laser pulses observed are attributed to two...
Resource Type:: Article
Full Text:: untitled Observation of sum-frequency-generation-induced

The Impact of Focusing on Self-Compassion Skills Training on the Frequency of Change Talk and Client Satisfaction Among Opioid-Dependent Young Adults

Creator:: Tomlin, Kathyleen M.
Abstract:: The illicit use of opioids among young adults (18–25) has resulted in an increase of clients needing substance abuse treatment. Treatment programs are struggling to keep up with the influx of these young adults. Traditional models of care have some impact; however, there are not enough treatment centers that can...
Resource Type:: Dissertation
Full Text:: : The Impact of Focusing on Self-Compassion Skills Training on the Frequency of Change Talk and Client

A 0.5-to-2.5 Gb/s Reference-Less Half-Rate Digital CDR With Unlimited Frequency Acquisition Range and Improved Input Duty-Cycle Error Tolerance

Creator:: Inti, Rajesh, Yin, Wenjing, Elshazly, Amr, Sasidhar, Naga, and Hanumolu, Pavan Kumar
Abstract:: A reference-less highly digital half-rate clock and data recovery (CDR) circuit with improved tolerance to input duty cycle error is presented. Using a chain of frequency dividers, the proposed frequency detector produces a known sub-harmonic tone from the incoming random data. A digital frequency-locked loop uses the extracted tone, and...
Resource Type:: Article
Full Text:: dependence of the proposed frequency detector accuracyon input data transitions is characterized by

Probing the orientation of electrostatically immobilized cytochrome C by time of flight secondary ion mass spectrometry and sum frequency generation spectroscopy

Creator:: Baio, Joe E., Weidner, Tobias, Ramey, Dennis, Pruzinsky, Leah, and Castner, David G.
Abstract:: By taking advantage of the electron pathway through the heme group in cytochrome c (CytoC) electrochemists have built sensors based upon CytoC immobilized onto metal electrodes. Previous studies have shown that the electron transfer rate through the protein is a function of the position of this heme group with respect...
Resource Type:: Article
Full Text:: immobilized cytochrome C by time of flight secondary ion mass spectrometry and sum frequency generation

A study of new optical materials I. Crystal-chemical development of new optical frequency converters II. New hosts for Cr3+ luminescence and lasing

Creator:: Schaffers, Kathleen I.
Abstract:: The emphasis of this work has been in two areas of optical materials - the crystal-chemical development of new optical frequency converters and the synthesis and study of new hosts for Cr³⁺ luminescence and lasing. A simple method has been developed to identify promising frequency-doubling materials containing triangular oxoanions by...
Resource Type:: Dissertation
Full Text:: development of new optical frequency converters II. New hosts for Cr3+ luminescence and lasing AN ABSTRACT

Epidemiology of disease caused by Pseudomonas syringae as an epiphyte and its frequency, distribution, and characteristics as an endophyte of pear

Creator:: Whitesides, Steven K.
Abstract:: Conditions were established for inducing pear blossom blast caused by Pseudomonas syringae (Ps) on both attached and detached shoots. The incidence of disease was proportional to the log of Ps population under optimal temperature, moisture and bloom developmental stage. Highest incidence of infection followed occurrence of a major exotherm in...
Resource Type:: Dissertation
Full Text:: an epiphyte and its frequency, distribution, and characteristics as an endophyte of pear AN

Frequency of testing and its effects on achievement, test anxiety and attitudes toward science of students at University Technology of Malaysia

Creator:: Yamin, Sulaiman Bin
Abstract:: The purpose of this study was to determine the effects of frequent versus conventional testing on Chemistry achievement test anxiety, and attitudes toward science of students enrolled in general chemistry classes at the University Technology of Malaysia. The subjects consisted of 278 students taking first year Chemistry at the University...
Resource Type:: Dissertation
Full Text:: of Doctor of Philosophy in Science Education presented on August 2. 1988. Title: Frequency of

Temperature-dependent absorption of water in the red and near-infrared portions of the spectrum

Creator:: Pegau, W. S. and Zaneveld, J. Ronald
Abstract:: We looked at the influence of temperature and salinity on the absorption coefficient of water with emphasis on the red and near-IR portions of the spectrum. The absorption coefficient of pure water was found to have a strong dependence on temperature and little dependence on salinity near the harmonics of...
Resource Type:: Article
Full Text:: found to have a strong dependence on temperature and little dependence on salinity near the harmonics

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