Relevant bibliographies by topics / Dispersion parameters

Academic literature on the topic 'Dispersion parameters'

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Published: 10 December 2022
Last updated: 29 January 2023

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Journal articles on the topic "Dispersion parameters"

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Abdullah, Rasha A., Nada M. Saeed, Hussain Kh. Al Khalid, and Mohammed A. Razooqi. "Dispersion Parameters of Thin Cadmium Telluride Films at Different Thicknesses." International Journal of Scientific Research 2, no. 3 (June 1, 2012): 368–70. http://dx.doi.org/10.15373/22778179/mar2013/120.

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Pinker, R. T., and J. Z. Holland. "Dispersion Parameters over Forested Terrain." Journal of Applied Meteorology 27, no. 11 (November 1988): 1198–217. http://dx.doi.org/10.1175/1520-0450(1988)027<1198:dpoft>2.0.co;2.

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Qin, Xilin, Zhixian Gui, Fei Yang, and Yuanyuan Liu. "Anisotropic frequency-dependent characteristics of PP- and PS-waves in partially saturated double-porosity rocks." Journal of Geophysics and Engineering 18, no. 3 (June 2021): 355–68. http://dx.doi.org/10.1093/jge/gxab019.

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Abstract Most frequency-dependent AVO inversions are currently based on an approximate equation derived using an isotropic medium. However, actual reservoirs usually show anisotropy, such as shale reservoirs, tight sandstone reservoirs and fractured reservoirs. We propose a joint frequency-dependent AVO (JFAVO) inversion in an anisotropic medium based on a periodic layered double-porosity medium. This JFAVO will allow us to quantitatively study the influence of fluids on the dispersion of PP- and PS-wave velocities and anisotropic parameters. First, we used a double-porosity medium to analyse the frequency-dependent characteristics of velocities and anisotropy parameters. We found that the anisotropic parameters show obvious dispersions, similar to those of velocities. Then, we derived the JFAVO inversion based on Rüger's equation to extract the dispersion of velocities and anisotropic parameters. Finally, we analysed the stability and applicability of the inversion algorithm, and used three sets of models to analyse the sensitivity of dispersion properties to fluids. The numerical analysis results show that PP-wave velocity dispersion and anisotropic parameter δ dispersion are sensitive to fluids, whereas, the velocity dispersion of the PS-wave is not. When saturation exceeds 80%, the velocity dispersion and anisotropic parameter dispersion properties are not sensitive to fluids.
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Xu, Zheng, Yan Xue, and Zhihao Huang. "Dependence of Dispersion on Metamaterial Structural Parameters and Dispersion Management." Applied Sciences 8, no. 7 (June 28, 2018): 1057. http://dx.doi.org/10.3390/app8071057.

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Albornoz-Palma, Gregory, Daniel Ching, Andrea Andrade, Sergio Henríquez-Gallegos, Regis Teixeira Mendonça, and Miguel Pereira. "Relationships between Size Distribution, Morphological Characteristics, and Viscosity of Cellulose Nanofibril Dispersions." Polymers 14, no. 18 (September 14, 2022): 3843. http://dx.doi.org/10.3390/polym14183843.

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Rheological parameters of cellulose nanofibril dispersions (CNF) are relevant and commonly used as quality control for producing of this type of material. These parameters are affected by morphological features and size distribution of the nanofibrils. Understanding the effect of size distribution is essential for analyzing the rheological properties, viscosity control, performance of CNFs, and potential dispersion applications. This study aims at comprehending how the morphological characteristics of the CNFs and their size distribution affect the rheological behavior of dispersions. The CNF dispersions were fractionated by size, obtaining six fractions of each, which were analyzed for their morphology and rheology (viscosity, intrinsic viscosity). In the dilute region, the viscosity and intrinsic viscosity behavior of CNF dispersions are linear concerning the size distribution present in the dispersion. In the semi-dilute region, the size of the fibrils and the fiber aggregates have a relevant effect on the viscosity behavior of CNF dispersions, which are satisfactorily related (R2 = 0.997) using the rule of logarithmic additivity of the dispersion viscosities of size fractions.
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KOBAYASHI, Toshikatsu. "Interface Scientific Parameters for Pigment Dispersion." Journal of the Japan Society of Colour Material 78, no. 2 (2005): 64–71. http://dx.doi.org/10.4011/shikizai1937.78.64.

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Mohamed El-Sayed, Ahmed Mohamed. "A New Approach for Dispersion Parameters." Journal of Applied Mathematics and Physics 04, no. 08 (2016): 1554–66. http://dx.doi.org/10.4236/jamp.2016.48165.

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Kolosko, Anatoly G., Eugeni O. Popov, Sergey V. Filippov, and Pavel A. Romanov. "Statistical dispersion of nanocomposite emission parameters." Journal of Vacuum Science & Technology B, Nanotechnology and Microelectronics: Materials, Processing, Measurement, and Phenomena 33, no. 3 (May 2015): 03C104. http://dx.doi.org/10.1116/1.4904738.

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Fokina, V. Yu, E. А. Kizima, I. V. Miheev, A. I. Ivankov, and V. M. Garamus. "STRUCTURAL PARAMETERS OF AQUEOUS COLLOIDAL DISPERSIONS OF FULLERENE C60." Bulletin of Dubna International University for Nature, Society, and Man. Series: Natural and engineering sciences, no. 4 (45) (December 30, 2019): 31–37. http://dx.doi.org/10.37005/1818-0744-2019-4-31-37.

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Two types of fullerene C60 water dispersions were investigated by a small-angle X-ray and neutron scattering. As a result, structural parameters of fullerene aggregates were obtained. The water dispersions were obtained by the solvent-exchange technique and by huge dilution of initial C60/Nmethylpyrrolidone solution. The structure organization of water dispersions is considered in respect to their technique preparation. It was shown that fullerene aggregates were characterized by highly polydispersity in size for all dispersions. In the case of son/nC60 dispersion it was found that fullerenes formed aggregates with a dense nucleus (namely a surface fractal) with a radius of 58 ± 1 nm and a fractal dimension of 2.3. In turn, the nmp/nC60 system was characterized by the branched aggregates with fractal dimension 1.5 and bimodal particle size distribution.
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Quinault, J. M., A. B. Mayhoub, and G. Deville Cavelin. "An atmospheric dispersion model with continuous vertical variation of dispersion parameters." Theoretical and Applied Climatology 58, no. 1-2 (1997): 113–27. http://dx.doi.org/10.1007/bf00867438.

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Dissertations / Theses on the topic "Dispersion parameters"

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Wang, Bo Sen. "Statistical process control of process dispersion when parameters are unknown." Thesis, University of Macau, 2007. http://umaclib3.umac.mo/record=b1872930.

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De, Samrat. "Effect of Variation of the Systemic Parameters on the Structural Response of Single Degree of Freedom Systems Subjected to Incremental Dynamic Analysis." Thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/9730.

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This thesis presents the results of a study of the effect of variations of systemic parameters on the structural response of single degree of freedom systems subjected to Incremental Dynamic Analysis. The systemic parameters are mass, stiffness, damping, yield strength and geometric stiffness. Each of these parameters was varied one at a time while the other values were kept constant. For each variation of parameters a set of single-record IDA curves was obtained. Five to six ground motions were used for this study to generate the single-record IDA curves. These ground motions were scaled prior to their application on the structure. The scaling factor was based on the spectral acceleration at the fundamental frequency of the structure at 5% of critical damping. The scale factor is affected if the system parameters are changed. An important issue for this study was whether to persist with scaling corresponding to the median value from the range of the values of the parameter or to update the scaling according to the system. Based on some tests using both methods, the median scaling approach was found to be more suitable. The IDA curves for variation of parameters were then investigated to identify any trends that may help in qualitatively predicting the response of a system relative to another system. The response was measured by the peak displacement and the maximum base shear of the system. A clear trend was identified when the damping or the yield strength was varied. However, no definite trend was observed when the material stiffness or the geometric stiffness of the system was varied.
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Nowak, Wolfgang. "Geostatistical methods for the identification of flow and transport parameters in the subsurface." [S.l. : s.n.], 2005. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB11759377.

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Sashkova, Y. V., and E. N. Odarenko. "The Effect of Additional Layers Parameters on the Modifided Bragg Waveguide Characteristics." Thesis, IEEE, 2017. https://openarchive.nure.ua/handle/document/18112.

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Bragg waveguide with additional layers between hollow core and periodic cladding is considered. On the base of dispersion equation solutions dispersion diagrams are obtained. The transversal spatial distributions of the electric field intensity are shown. The characteristics of Bragg waveguide respect to additional layer thickness and permittivity are considered. It is shown that increase of additional layers thickness results in increase of slow-waves number. Also field intensity decay in channel is reduced. Number of slow-waves increases respect to additional layers permittivity too. But distribution of the electric field intensity in the channel changes insignificantly. So one can tune additional layers parameters to get expected Bragg waveguide characteristics.
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Ruddy, Sean Matthew. "Shrinkage of dispersion parameters in the double exponential family of distributions, with applications to genomic sequencing." Thesis, University of California, Berkeley, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=3686002.

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The prevalence of sequencing experiments in genomics has led to an increased use of methods for count data in analyzing high-throughput genomic data to perform analyses. The importance of shrinkage methods in improving the performance of statistical methods remains. A common example is that of gene expression data, where the counts per gene are often modeled as some form of an overdispersed Poisson. In this case, shrinkage estimates of the per-gene dispersion parameter have lead to improved estimation of dispersion in the case of a small number of samples. We address a different count setting introduced by the use of sequencing data: comparing differential proportional usage via an overdispersed binomial model. Such a model can be useful for testing differential exon inclusion in mRNA-Seq experiments in addition to the typical differential gene expression analysis. In this setting, there are fewer such shrinkage methods for the dispersion parameter. We introduce a novel method that is developed by modeling the dispersion based on the double exponential family of distributions proposed by Efron (1986), also known as the exponential dispersion model (Jorgensen, 1987). Our methods (WEB-Seq and DEB-Seq) are empirical bayes strategies for producing a shrunken estimate of dispersion that can be applied to any double exponential dispersion family, though we focus on the binomial and poisson. These methods effectively detect differential proportional usage, and have close ties to the weighted likelihood strategy of edgeR developed for gene expression data (Robinson and Smyth, 2007; Robinson et al., 2010). We analyze their behavior on simulated data sets as well as real data for both differential exon usage and differential gene expression. In the exon usage case, we will demonstrate our methods' superior ability to control the FDR and detect truly different features compared to existing methods. In the gene expression setting, our methods fail to control the FDR; however, the rankings of the genes by p-value is among the top performers and proves to be robust to both changes in the probability distribution used to generate the counts and in low sample size situations. We provide implementation of our methods in the R package DoubleExpSeq available from the Comprehensive R Archive Network (CRAN).

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Gislason, Gardar. "Effect of Petrophysical Parameters on Seismic Waveform Signatures : Review of Theory with Case Study from Frigg Delta Oil Field, Norway." Thesis, Uppsala universitet, Geofysik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-303793.

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Conventional AVO analysis has been used for the past 4 decades to aid in locating oil and gas reservoirs for extraction. It is, however, not possible to use it to acquire information on the porosity of the rock, the fluid saturation or other important petrophysical parameters. In this thesis, I study the effects of attenuation on seismic waveform signatures, due to wave induced fluid-flow. In the first part of the thesis, 2 models were used to synthetically model the attenuation caused by the wave induced fluid-flow: White's model and the double-porosity dual-permeability (DPDP) model. The parameters used for modeling were both synthetic and acquired from real well data of a known oil field off the coast of Norway. White's model was found to model relatively high attenuation (5%) for intermediately consolidated gas reservoirs while oil saturated intermediately consolidated reservoirs showed such low attenuation (0.3%) that it is easy to say that for the real-world situation it would not be detected. The DPDP model seemed to be able to better describe the attenuation and gave attenuations up to 10% for an intermediately consolidated oil reservoir, but due to lack of parameters from well data it was not sufficiently able to model the real-world situation. The synthetic data, however, show interesting characteristics and it is therefore recommended that more and detailed well parameters be acquired if the research should continue. For the second part, Svenska Petroleum Exploration AB and Det Norske Oljeselskap ASA provided stacked seismic data that were spectrally analyzed for hints of attenuation variation with frequency (using Fourier Transform and Complex Spectral Decomposition). Twelve locations, on the stacked seismic cube, were analyzed; six oil saturated; and six (assumed) water saturated. At each location, a main trace was selected along with the two nearby traces on each side of it (five in total). The Complex Spectral Decomposition method seemed unable to correctly break down the stacked section's signal, which is why Fourier Transform was used for further analysis. The frequency analysis showed a peak at ~30 Hz for both oil and water saturated reservoirs which seems like a characteristic frequency of the source, but that was unfortunately not confirmed and not enough time was available to test the assumption. The Fourier transform seems to show some difference between oil and water saturated traces, but that could well be because of lithological differences and not the pore fluid. It is therefore recommended, if research is to be continued, that 4D seismic data is used to analyze the same location with respect to time. It is also recommended that pre-stack or shot data be used as information is lost in stacked data.
Konventionell AVO-analys har använts under fyra deceniär som ett hjälpmedel för att finna olje- och gasreserver, men tekniken kan även användas för att erhålla information om bergets porositet, vätskemättnaden och andra viktiga petrofysiska parametrar. I denna avhandlingen har jag studerat hur våginducerat vätskeflöde påverkar dämpningen av den seismiska vågformssignaturen. I den första delen av avhandlingen användes två metoder för att syntetisk modellera dämpning orsakad av våginducerat vätskeflöde: "White's modell" och "double-porosity dual-permeability (DPDP) modellen". Både syntetiska parametrar och verkliga parametrar från borrhålsdata från ett känt norskt oljefält användes vid modelleringen. White's modell visade sig modellera relativt kraftig dämpning (5%) för medelstarkt konsoliderade gasreservoarer medan för oljereservoarer med motsvaranda konsolidering dämpningen var så låg (0.3%) att det är uppenbart att i en verklig situation skulle dämpningen inte vara mätbar. DPDP modelleringen verkar vara bättre på att beskriva dämpningen och gav dämpningar upp till 10% för en medelstarkt konsoliderad oljereservoar. Brist på parametrar från borrhålsdata gjorde att det inte var möjligt att på ett tillfredställande sätt modellera en verklig situation.Dock visade syntetisk data intressant karaktäristik och det rekommenderas därför att mer och detaljerade borrhålsparametrar mäts om ytterligare forskning om detta ska genomföras. För den andra delen av avhandlingen har Svenska Petroleum Exploration AB och Det Norske Oljeselskap ASA bidragit med stackad seismisk data som även var spectralanalyserad för indikationer på frekvensberoende dämpningsvariationer (utfört med fouriertransform och komplex spectraldekomposition). Tolv områden på den stackade kuben analyserades; sex oljemättade och sex som antogs vara vattenmättade. I varje område valdes en huvudtracé och de två närmaste tracéerna på vardera sida (totalt fem tracéer). Metoden med komplex spectraldekomposition klarade inte att analysera signalen från den stackade sektionen, varför fouriertransform användes för vidare analys. Frekvensanalysen gav en topp vid ~30 Hz för både olje- och vattenmättade reservoarer vilket tycks vara en karaktäristisk frekvens för källan. Detta kunde tyvärr inte bekräftas och tiden räckte inte till för att testa antagandet. Fouriertransformen tycks visa en viss skillnad mellan olje- och vattenmättade tracéer, men det kan också bero på skillnad i litologin snarare än porvätskan. Där för rekommenderas vid fortsättning på denna forskning att 4D seismisk data används för att analysera samma område men med data från olika tidpunkter. Det rekommenderas även att ostackad eller råa skott-data används eftersom väsentlig information kan försvinna när data stackas.

Advisor present: Dr. Chris Juhlin

Examiner: Dr. Milovan Urosevic

Opponent: Álvaro Polín Tornero

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RITA, ISAAC NEWTON FERREIRA SANTA. "COMPARISON OF TECHNIQUES FOR CFAR CLEAN AND ANALYSIS OF DISPERSION PARAMETERS OF MOBILE RADIO CHANNEL IN THE 2.5 GHZ." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2013. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=35416@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO
INSTITUTO MILITAR DE ENGENHARIA
CENTRO TECNOLÓGICO DO EXÉRCITO
Este trabalho objetiva apresentar os resultados das medições e a análise da resposta do canal banda larga na faixa de frequências de 2.5 GHz em um ambiente urbano, através da técnica de sondagem de multiportadoras. Para isso, os perfis de retardo de potência desse canal foram obtidos com base nos dados medidos na região da Gávea na cidade do Rio de Janeiro, utilizando duas técnicas de limpeza de perfis de retardo. As técnicas de limpeza são apresentadas e seus resultados são comparados para a transmissão de um sinal de 20MHz de largura de banda. Os Retardos RMS (Root Mean Square) são calculados a partir desses Perfis de Retardo de Potências filtrados e o erro médio quadrático para cada técnica de limpeza é avaliado e comparado para algumas posições do receptor.
This work presents the results of measurements and the analysis of the response of a wide band channel in the 2.5 GHz band for an urban environment, using the multicarrier sounding technique. To do this, the power delay profile (PDP) of the channel was obtained based on data measured at the neighborhood of Gávea, in the Rio de Janeiro, using two power delay profile filtering techniques. The power delay profile filtering techniques are presented and the results are compared for a transmitted signal of 20MHz bandwidth. The RMS (root mean square) delay spreads are determined from the filtered PDPs and from the original ones. The results are compared for some positions of the receiver and the quadratic mean error is evaluated.
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Khodami, Maryam. "Dispersion Characteristics of One-dimensional Photonic Band Gap Structures Composed of Metallic Inclusions." Thèse, Université d'Ottawa / University of Ottawa, 2012. http://hdl.handle.net/10393/23179.

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An innovative approach for characterization of one dimensional Photonic Band Gap structures comprised of metallic inclusions (i.e. subwavelength dipole elements or resonant ring elements) is presented. Through an efficient S- to T-parameters conversion technique, a detailed analysis has been performed to investigate the variation of the dispersion characteristics of 1-D PBG structures as a function of the cell element configuration. Also, for the first time, the angular sensitivity of the structure has been studied in order to obtain the projected band diagrams for both TE and TM polarizations. Polarization sensitivity of the subwavelength cell element is exploited to propose a novel combination of elements which allows achieving PBGs with simultaneous frequency and polarization selectivity. The proposed approach demonstrates that the dispersion characteristic of each orthogonal polarization can be independently adjusted with dipole elements parallel to that same polarization. Generally, the structure has potential applications in orthomode transducer, and generally whenever the polarization of the incoming signal is to be used as a means of separating it from another signal in the same frequency band that is of orthogonal polarization. The current distribution and the resonance behavior of the ring element is studied and the effect of resonance on dispersion characteristics of 1-D PBGs composed of rings is investigated for the first time, for both individual and coupled rings. Interestingly, it is observed that 1-D PBG composed of resonant elements consistently has a bandgap around the resonant frequency of the single layer structure.
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Sabnis, Aniket D. "Impact of material attributes & process parameters on critical quality attributes of the amorphous solid dispersion products obtained using hot melt extrusion." Thesis, University of Bradford, 2019. http://hdl.handle.net/10454/17458.

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The feasibility of hot melt extrusion (HME) was explored for development of amorphous solid dispersion systems. Controlled release formulations were developed using a cellulose based derivative, AffinisolTMHPMC 100cP and 4M grades. BCS class II drugs ibuprofen and posaconazole were selected due to their difference in glass transition temperature and lipophilicity. This study focused on investigation of the impact the material attributes and process parameters on the critical quality attributes in preparation of amorphous solid dispersions using hot melt extrusion. The critical quality attributes were sub divided into three main attributes of material, process and product. Rheology of ibuprofen-Affinisol 100cP from melt phase to extrudate phase was tracked. A partial factorial design was carried out to investigate the critical parameters affecting HME. For optimisation of 40%IBU-Affinisol 100cP blends, a feed rate of 0.6kg/hr, screw speed of 500rpm and screw configuration with two mixing elements were found to be optimum for single phase extrudates. ATR-FTIR spectroscopy was found to be an indirect technique of choice in predicting the maximum ibuprofen drug load within extrudates. Prediction was based on the prepared extrudates without charging them to stability conditions. An alternative strategy of incorporation of di-carboxylic acids to increase the dissolution of posaconazole-Affinisol 4M blends was investigated. Succinic acid and L- malic acid incorporation was found to increase the dissolution of posaconazole. Although, the extrudates crystallised out quicker than the naïve posaconazole-Affinisol 4M, but free posaconazole formed eutectic and co-crystal with succinic and L-malic acid within extrudates. This lead to an increase in dissolution of the extrudates compared to day 0.
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Dooher, Thomas. "Multi-walled carbon nanotube/high temperature polymer composites an investigation into the role of the solubility parameters in predicting dispersion and interfacial bonding." Thesis, University of Ulster, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.536463.

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Books on the topic "Dispersion parameters"

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Eriksson, Olle, Anders Bergman, Lars Bergqvist, and Johan Hellsvik. Atomistic Spin Dynamics. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780198788669.001.0001.

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The purpose of this book is to provide a theoretical foundation and an understanding of atomistic spin-dynamics, and to give examples of where the atomistic Landau-Lifshitz-Gilbert equation can and should be used. The contents involve a description of density functional theory both from a fundamental viewpoint as well as a practical one, with several examples of how this theory can be used for the evaluation of ground state properties like spin and orbital moments, magnetic form-factors, magnetic anisotropy, Heisenberg exchange parameters, and the Gilbert damping parameter. This book also outlines how interatomic exchange interactions are relevant for the effective field used in the temporal evolution of atomistic spins. The equation of motion for atomistic spin-dynamics is derived starting from the quantum mechanical equation of motion of the spin-operator. It is shown that this lead to the atomistic Landau-Lifshitz-Gilbert equation, provided a Born-Oppenheimer-like approximation is made, where the motion of atomic spins is considered slower than that of the electrons. It is also described how finite temperature effects may enter the theory of atomistic spin-dynamics, via Langevin dynamics. Details of the practical implementation of the resulting stochastic differential equation are provided, and several examples illustrating the accuracy and importance of this method are given. Examples are given of how atomistic spin-dynamics reproduce experimental data of magnon dispersion of bulk and thin-film systems, the damping parameter, the formation of skyrmionic states, all-thermal switching motion, and ultrafast magnetization measurements.
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Book chapters on the topic "Dispersion parameters"

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Maasch, Matthias. "Extraction of Dispersion Parameters." In Tunable Microwave Metamaterial Structures, 49–72. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-28179-7_4.

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Halter, R. J., A. Schned, J. Heaney, A. Hartov, and K. D. Paulsen. "Single Dispersion Cole Parameters of Malignant and Benign Prostate." In IFMBE Proceedings, 399–402. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-03885-3_111.

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Besterci, M., I. Saxl, I. Kohútek, J. Zrník, and K. Sülleiová. "Quantification of Structure Parameters of Dispersion Strengthened Aluminium Alloys." In Advanced Light Alloys and Composites, 243–48. Dordrecht: Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-015-9068-6_32.

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Horák, Daniel, Bohuslav Rittich, and Alena Španová. "Effect of reaction parameters on properties of dispersion-polymerized hydrophilic microspheres as supports for immobilization of proteins." In Aqueous Polymer Dispersions, 77–81. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/b12142.

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Horák, Daniel, Bohuslav Rittich, and Alena Španová. "Effect of reaction parameters on properties of dispersion-polymerized hydrophilic microspheres as supports for immobilization of proteins." In Aqueous Polymer Dispersions, 77–81. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-540-36474-0_16.

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Degrazia, G. A. "Modelling Dispersion Parameters in a Planetary Boundary Layer Dominated by Convection." In Air Pollution Modeling and Its Application XII, 715–16. Boston, MA: Springer US, 1998. http://dx.doi.org/10.1007/978-1-4757-9128-0_81.

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Shron, L., V. Bogutsky, and E. Yagyaev. "Study on the Dispersion of Concentrator Geometric Parameters in Fillet-Welded Joints." In Proceedings of the 4th International Conference on Industrial Engineering, 2461–66. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-95630-5_266.

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Anand, M. C., Divya Rani, and B. K. Sujatha. "Time Dispersion Parameters for Double Bounce Geometrical Channel Including Rain Fading Effect." In Emerging Research in Computing, Information, Communication and Applications, 263–72. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-4741-1_24.

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Moreno, Rodrigo, and Begoña Ferrari. "Nanoparticles Dispersion and the Effect of Related Parameters in the EPD Kinetics." In Nanostructure Science and Technology, 73–128. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-9730-2_2.

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Taudt, Christopher. "Thin-film Characterization." In Development and Characterization of a Dispersion-Encoded Method for Low-Coherence Interferometry, 123–30. Wiesbaden: Springer Fachmedien Wiesbaden, 2021. http://dx.doi.org/10.1007/978-3-658-35926-3_5.

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AbstractThe third intended application for the proposed dispersion-encoded low-coherence interferometry is the evaluation of thin-film characteristics on substrate materials. Due to the usage of thin-film technologies in high-volume production in e.g. the photovoltaics and semiconductor industry, process monitoring becomes relevant in order to ensure functional parameters such as solar cell efficiency, [289]. In this context, film thickness as well as film homogeneity over large areas are important criteria for quality assurance.
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Conference papers on the topic "Dispersion parameters"

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April L. Hiscox, David R. Miller, and Carmen J. Nappo. "Plume Model Dispersion Parameters Measured with LIDAR." In 2005 Tampa, FL July 17-20, 2005. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2005. http://dx.doi.org/10.13031/2013.18877.

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Klyachkin, Vladimir, and Anastasiya Alekseeva. "Parameters Optimization of the Generalized Dispersion Algorithm." In 2021 International Conference on Information Technology and Nanotechnology (ITNT). IEEE, 2021. http://dx.doi.org/10.1109/itnt52450.2021.9649378.

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Pini, Agnese, Simone Zazzini, Paolo Bello, Paolo Monti, and Giovanni Leuzzi. "Numerical investigation of microplastic dispersion in the water column." In 2022 IEEE International Workshop on Metrology for the Sea; Learning to Measure Sea Health Parameters (MetroSea). IEEE, 2022. http://dx.doi.org/10.1109/metrosea55331.2022.9950826.

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Sokac, Marek. "DETERMINATION OF DISPERSION PARAMETERS IN STREAMS WITH DEAD ZONES." In 17th International Multidisciplinary Scientific GeoConference SGEM2017. Stef92 Technology, 2017. http://dx.doi.org/10.5593/sgem2017/31/s12.023.

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Zdobytskyi, Andriy, Mykhailo Lobur, Volodymyr Dutka, Mykola Prodanyuk, and Olha Senkovych. "Determination of Dispersion Medium Parameters by Intelligent Microelectromechanical System." In 2020 IEEE XVIth International Conference on the Perspective Technologies and Methods in MEMS Design (MEMSTECH). IEEE, 2020. http://dx.doi.org/10.1109/memstech49584.2020.9109482.

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Charles, Alain. "Parameters Affecting Alignment Dispersion On An Optical Wafer Stepper." In 1989 Intl Congress on Optical Science and Engineering, edited by Michel J. Lacombat and Stefan Wittekoek. SPIE, 1989. http://dx.doi.org/10.1117/12.961745.

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CHAKRAVARTY, SARBARISH, and GINO BIONDINI. "ON THE CHARACTERISTIC PARAMETERS OF DISPERSION-MANAGED OPTICAL PULSES." In Proceedings of the Workshop. WORLD SCIENTIFIC, 2003. http://dx.doi.org/10.1142/9789812704467_0049.

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Liu, Lin, Mingde Zhang, and Xiaohan Sun. "Optimal design of the parameters in dispersion compensation fibers." In International Symposium on Optoelectonics and Microelectronics, edited by Jian Liu and Zhigong Wang. SPIE, 2001. http://dx.doi.org/10.1117/12.444549.

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Ruan, Fangming, Yang Meng, Feng Zhou, Huaiyu Wang, and Ning Zhuan. "Investigation of parameters dispersion in narrow gap electrostatic discharge." In 2012 Asia-Pacific Symposium on Electromagnetic Compatibility (APEMC). IEEE, 2012. http://dx.doi.org/10.1109/apemc.2012.6237936.

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Pini, Agnese, Giovanni Leuzzi, Paolo Monti, and Matteo Manfredi. "Modelling of short-term dispersion in the sea surface layer." In 2018 IEEE International Workshop on Metrology for the Sea; Learning to Measure Sea Health Parameters (MetroSea). IEEE, 2018. http://dx.doi.org/10.1109/metrosea.2018.8657849.

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Reports on the topic "Dispersion parameters"

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Hanson A. L. and Diamond D. Calculation of Design Parameters for an Equilibrium LEU Core in the NBSR using a U7Mo Dispersion Fuel. Office of Scientific and Technical Information (OSTI), June 2014. http://dx.doi.org/10.2172/1134663.

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Grenier, M., S. Hardcastle, G. Kunchur, and K. Butler. The use of tracer gases to determine dust dispersion patterns and ventilation parameters in a mineral processing plant. Natural Resources Canada/CMSS/Information Management, 1991. http://dx.doi.org/10.4095/328605.

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Banks, H. T., and J. M. Bardsley. Parameter Identification for a Dispersive Dielectric in 2D Electromagnetics: Forward and Inverse Methodology With Statistical Considerations. Fort Belvoir, VA: Defense Technical Information Center, December 2003. http://dx.doi.org/10.21236/ada446721.

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Jury, William A., and David Russo. Characterization of Field-Scale Solute Transport in Spatially Variable Unsaturated Field Soils. United States Department of Agriculture, January 1994. http://dx.doi.org/10.32747/1994.7568772.bard.

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This report describes activity conducted in several lines of research associated with field-scale water and solute processes. A major effort was put forth developing a stochastic continuum analysis for an important class of problems involving flow of reactive and non reactive chemicals under steady unsaturated flow. The field-scale velocity covariance tensor has been derived from local soil properties and their variability, producing a large-scale description of the medium that embodies all of the local variability in a statistical sense. Special cases of anisotropic medium properties not aligned along the flow direction of spatially variable solute sorption were analysed in detail, revealing a dependence of solute spreading on subtle features of the variability of the medium, such as cross-correlations between sorption and conductivity. A novel method was developed and tested for measuring hydraulic conductivity at the scale of observation through the interpretation of a solute transport outflow curve as a stochastic-convective process. This undertaking provided a host of new K(q) relationships for existing solute experiments and also laid the foundation for future work developing a self-consistent description of flow and transport under these conditions. Numerical codes were developed for calculating K(q) functions for a variety of solute pulse outflow shapes, including lognormal, Fickian, Mobile-Immobile water, and bimodal. Testing of this new approach against conventional methodology was mixed, and agreed most closely when the assumptions of the new method were met. We conclude that this procedure offers a valuable alternative to conventional methods of measuring K(q), particularly when the application of the method is at a scale (e.g. and agricultural field) that is large compared to the common scale at which conventional K(q) devices operate. The same problem was approached from a numerical perspective, by studying the feasibility of inverting a solute outflow signal to yield the hydraulic parameters of the medium that housed the experiment. We found that the inverse problem was solvable under certain conditions, depending on the amount of noise in the signal and the degree of heterogeneity in the medium. A realistic three dimensional model of transient water and solute movement in a heterogeneous medium that contains plant roots was developed and tested. The approach taken was to generate a single realization of this complex flow event, and examine the results to see whether features were present that might be overlooked in less sophisticated model efforts. One such feature revealed is transverse dispersion, which is a critically important component in the development of macrodispersion in the longitudinal direction. The lateral mixing that was observed greatly exceeded that predicted from simpler approaches, suggesting that at least part of the important physics of the mixing process is embedded in the complexity of three dimensional flow. Another important finding was the observation that variability can produce a pseudo-kinetic behavior for solute adsorption, even when the local models used are equilibrium.
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Lacerda Silva, P., G. R. Chalmers, A. M. M. Bustin, and R. M. Bustin. Gas geochemistry and the origins of H2S in the Montney Formation. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/329794.

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The geology of the Montney Formation and the geochemistry of its produced fluids, including nonhydrocarbon gases such as hydrogen sulfide were investigated for both Alberta and BC play areas. Key parameters for understanding a complex petroleum system like the Montney play include changes in thickness, depth of burial, mass balance calculations, timing and magnitudes of paleotemperature exposure, as well as kerogen concentration and types to determine the distribution of hydrocarbon composition, H2S concentrations and CO2 concentrations. Results show that there is first-, second- and third- order variations in the maturation patterns that impact the hydrocarbon composition. Isomer ratio calculations for butane and propane, in combination with excess methane estimation from produced fluids, are powerful tools to highlight effects of migration in the hydrocarbon distribution. The present-day distribution of hydrocarbons is a result of fluid mixing between hydrocarbons generated in-situ with shorter-chained hydrocarbons (i.e., methane) migrated from deeper, more mature areas proximal to the deformation front, along structural elements like the Fort St. John Graben, as well as through areas of lithology with higher permeability. The BC Montney play appears to have hydrocarbon composition that reflects a larger contribution from in-situ generation, while the Montney play in Alberta has a higher proportion of its hydrocarbon volumes from migrated hydrocarbons. Hydrogen sulphide is observed to be laterally discontinuous and found in discrete zones or pockets. The locations of higher concentrations of hydrogen sulphide do not align with the sulphate-rich facies of the Charlie Lake Formation but can be seen to underlie areas of higher sulphate ion concentrations in the formation water. There is some alignment between CO2 and H2S, particularly south of Dawson Creek; however, the cross-plot of CO2 and H2S illustrates some deviation away from any correlation and there must be other processes at play (i.e., decomposition of kerogen or carbonate dissolution). The sources of sulphur in the produced H2S were investigated through isotopic analyses coupled with scanning electron microscopy, energy dispersive spectroscopy, and mineralogy by X-ray diffraction. The Montney Formation in BC can contain small discrete amounts of sulphur in the form of anhydrite as shown by XRD and SEM-EDX results. Sulphur isotopic analyses indicate that the most likely source of sulphur is from Triassic rocks, in particular, the Charlie Lake Formation, due to its close proximity, its high concentration of anhydrite (18-42%), and the evidence that dissolved sulphate ions migrated within the groundwater in fractures and transported anhydrite into the Halfway Formation and into the Montney Formation. The isotopic signature shows the sulphur isotopic ratio of the anhydrite in the Montney Formation is in the same range as the sulphur within the H2S gas and is a lighter ratio than what is found in Devonian anhydrite and H2S gas. This integrated study contributes to a better understanding of the hydrocarbon system for enhancing the efficiency of and optimizing the planning of drilling and production operations. Operators in BC should include mapping of the Charlie Lake evaporites and structural elements, three-dimensional seismic and sulphate ion concentrations in the connate water, when planning wells, in order to reduce the risk of encountering unexpected souring.
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