Bibliografías temáticas / Interface measurements

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Literatura académica sobre el tema "Interface measurements"

Autor: Grafiati

Publicado: 14 de diciembre de 2024

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Artículos de revistas sobre el tema "Interface measurements"

Tomar, Vikas y Ritesh Sachan. "Interface Strength Measurements". JOM 69, n.º 1 (26 de octubre de 2016): 12. http://dx.doi.org/10.1007/s11837-016-2158-9.

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Arpaia, Pasquale, Lucio Fiscarelli y Giuseppe Commara. "Advanced User Interface Generation in the Software Framework for Magnetic Measurements at Cern". Metrology and Measurement Systems 17, n.º 1 (1 de enero de 2010): 27–37. http://dx.doi.org/10.2478/v10178-010-0003-y.

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Advanced User Interface Generation in the Software Framework for Magnetic Measurements at CernA model-based approach, the Model-View-Interactor Paradigm, for automatic generation of user interfaces in software frameworks for measurement systems is proposed. The Model-View-Interactor Paradigm is focused on the "interaction" typical in a software framework for measurement applications: the final user interacts with the automatic measurement system executing a suitable high-level script previously written by a test engineer. According to the main design goal of frameworks, the proposed approach allows the user interfaces to be separated easily from the application logic for enhancing the flexibility and reusability of the software. As a practical case study, this approach has been applied to the flexible software framework for magnetic measurements at the European Organization for Nuclear research (CERN). In particular, experimental results about the scenario of permeability measurements are reported.

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Alfreider, Markus, Johannes Zechner y Daniel Kiener. "Addressing Fracture Properties of Individual Constituents Within a Cu-WTi-SiOx-Si Multilayer". JOM 72, n.º 12 (10 de noviembre de 2020): 4551–58. http://dx.doi.org/10.1007/s11837-020-04444-6.

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AbstractWith modern materials applications continually decreasing in size, e.g., microelectronics, sensors, actuators, and medical implants, quantifying materials parameters becomes increasingly challenging. Specifically, addressing individual constituents of a system, such as interfaces or buried layers in a multilayer structure, emerges as a topic of great importance. We demonstrate herein a technique to assess fracture parameters of different interfaces of a Cu-WTi-SiOx-Si model system based on in situ microcantilever testing in a scanning electron microscope. Positioning the initial notch position with respect to the interface of interest enabled selection of different crack paths, while an additional overlaid sinusoidal signal permitted continuous measurement of stiffness changes and thereby experimental measurement of the actual crack extension. We thus achieved continuous J–Δa curve measurements for the interface between Cu and WTi, the bulk WTi, and the interface between WTi and SiOx. The localized nature of this novel approach makes it generally applicable to testing specific interfaces.

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Josell, D., J. E. Bonevich, I. Shao y R. C. Cammarata. "Measuring the interface stress: Silver/nickel interfaces". Journal of Materials Research 14, n.º 11 (noviembre de 1999): 4358–65. http://dx.doi.org/10.1557/jmr.1999.0590.

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Interface stress is a surface thermodynamics quantity associated with the reversible work of elastically straining an internal solid interface. In a multilayered thin film, the combined effect of the interface stress of each interface results in an in-plane biaxial volume stress acting within the layers of the film that is inversely proportional to the bilayer thickness. We calculated the interface stress of an interface between {111} textured Ag and Ni on the basis of direct measurements of the dependence of the in-plane elastic strains on the bilayer thickness. The strains were obtained using transmission x-ray diffraction. Unlike previous studies of this type, we used freestanding films so that there was no need to correct for intrinsic stresses resulting from forces applied by the substrate that can lead to large uncertainties of the calculated interface stress value. Based on the lattice parameters of the bulk, pure elements, an interface stress of −2.02 ± 0.26 N/m was calculated using the x-ray diffraction results from films with bilayer thicknesses greater than 5 nm. This value is somewhat smaller than previous measurements obtained from as-deposited films supported by substrates. For smaller bilayer thicknesses the apparent interface stress becomes smaller in magnitude, possibly due to a loss of layering in the specimens.

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Schramm, Andreas Tobias, Frauke Kathinka Helene Gellersen y Karsten Kuhlmann. "Uncertainties of S-Parameter Measurements in Rectangular Waveguides at PTB". Advances in Radio Science 22 (8 de noviembre de 2024): 35–45. http://dx.doi.org/10.5194/ars-22-35-2024.

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Abstract. In this work the determination of measurement uncertainties in scattering parameter measurements for waveguide interfaces ranging from R 100 (WR 90) to R 2.6k (WR 3, WM-864) is presented. For each waveguide band a Thru Reflect Line calibration is performed including uncertainties for calibration standards, cable movement, interface repeatability and the characteristics of the vector network analyzer. For reflection and transmission coefficients, envelopes of uncertainties are determined for magnitude and phase angle respectively. In addition, an experiment on connection (interface) repeatability for R 140 was carried out to systematically investigate the influence of shifting and rotating of waveguide flanges. Translation values in steps of 0.3 mm up to 1.5 mm are examined in simulation as well as measurement. The findings of these investigations can be extended and applied to other waveguide bands.

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Kakiuchi, Takashi y Mitsugi Senda. "Polarizability and nonpolarizability of oil-water interfaces with relevance to a.c. impendance measurements". Collection of Czechoslovak Chemical Communications 56, n.º 1 (1991): 112–29. http://dx.doi.org/10.1135/cccc19910112.

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We have estimated the degree of polarizability of a polarized oil-water interface used as a working interface and that of the nonpolarizability of a nonpolarized interface used as a reference oil-water interface from the numerical calculation of dc and ac current vs potential behavior at both interfaces. Theoretical equations of dc and ac currents for simultaneous cation and anion transfer of supporting electrolytes have been derived for the planar stationary interface for reversible and quasi-reversible cases. In the derivation, the migration effect and the coupling of the cation and anion transfer have been incorporated. The transfer of ions constituting a supporting electrolyte contributes to the total admittance of the interface even in the region where the interface may be considered as polarized in dc sense, as pointed out first by Samec et al. (J. Electroanal. Chem. 126, 121 (1981)). Moreover, the reference oil-water interface is not ideally reversible, so that the contribution from this interface to the measured admittance cannot be negligible, unless the area of the reference oil-water interface is much larger than that of the working oil-water interface. The effect of non-ideality of the reference oil-water interface on the determination of double layer capacitances and kinetic parameters of charge transfer at the working oil-water interface has been estimated.

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Fujita, Yuki, Tadashi Ebihara, Naoto Wakatsuki, Yuka Maeda y Koichi Mizutani. "Acoustic probe for temperature measurement suitable for operation with audio interfaces having random input/output delays". Journal of the Acoustical Society of America 154, n.º 4_supplement (1 de octubre de 2023): A285. http://dx.doi.org/10.1121/10.0023539.

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Measuring temperature distribution is an important technique in the fields of meteorology, agriculture, and architecture. The acoustic probe emits sound waves from a speaker and measures the time it takes for the waves to reach a microphone, enabling the measurement of the average temperature between the speaker and the microphone. Additionally, by placing multiple acoustic probes around the measurement area, it becomes possible to measure the temperature distribution using fewer sensors compared to point-type sensors. However, acoustic probes can have higher costs due to the requirement for externally controllable setups or interfaces with minimal audio input/output (I/O) delays. To address this issue, we propose an acoustic probe that achieves accurate measurements even with a low-cost audio interface featuring random I/O delays. The proposed acoustic probe measures the delay time from the recording start to the playback start. This design cancels the error of sound wave propagation time caused by random delays in the audio interface. Through temperature measurement experiments using the proposed acoustic probe, it was revealed that precise measurements (the error of the proposed probe was 0.34°C, while the error of the existing probe was 4.88°C) could be achieved by canceling the random delays in the audio interface.

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Randall K. Wood y Eddie C. Burt. "Soil-Tire Interface Stress Measurements". Transactions of the ASAE 30, n.º 5 (1987): 1254–58. http://dx.doi.org/10.13031/2013.30554.

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Fiorenza, Patrick, Filippo Giannazzo y Fabrizio Roccaforte. "Characterization of SiO2/4H-SiC Interfaces in 4H-SiC MOSFETs: A Review". Energies 12, n.º 12 (17 de junio de 2019): 2310. http://dx.doi.org/10.3390/en12122310.

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This paper gives an overview on some state-of-the-art characterization methods of SiO2/4H-SiC interfaces in metal oxide semiconductor field effect transistors (MOSFETs). In particular, the work compares the benefits and drawbacks of different techniques to assess the physical parameters describing the electronic properties and the current transport at the SiO2/SiC interfaces (interface states, channel mobility, trapping phenomena, etc.). First, the most common electrical characterization techniques of SiO2/SiC interfaces are presented (e.g., capacitance- and current-voltage techniques, transient capacitance, and current measurements). Then, examples of electrical characterizations at the nanoscale (by scanning probe microscopy techniques) are given, to get insights on the homogeneity of the SiO2/SiC interface and the local interfacial doping effects occurring upon annealing. The trapping effects occurring in SiO2/4H-SiC MOS systems are elucidated using advanced capacitance and current measurements as a function of time. In particular, these measurements give information on the density (~1011 cm−2) of near interface oxide traps (NIOTs) present inside the SiO2 layer and their position with respect to the interface with SiC (at about 1–2 nm). Finally, it will be shown that a comparison of the electrical data with advanced structural and chemical characterization methods makes it possible to ascribe the NIOTs to the presence of a sub-stoichiometric SiOx layer at the interface.

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Sakhawy, Nagwa R. El y Tuncer B. Edil. "Behavior of Shaft-Sand Interface from Local Measurements". Transportation Research Record: Journal of the Transportation Research Board 1548, n.º 1 (enero de 1996): 74–80. http://dx.doi.org/10.1177/0361198196154800111.

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The load-displacement response of axially loaded structural inclusions in soil, which transfer the load to the soil along their shafts, is of growing interest in geotechnical engineering. The load-displacement response of a shaft interface is characterized by nonlinear and inelastic behavior. Surface roughness of the inclusion and stresses and deformation characteristics (stress-strain response, dilation, or contraction) of the soil element surrounding the inclusion are significant aspects of the interface mechanism. Localized shear displacement at the soil-shaft interface necessitates use of a constitutive model specifically developed for the interface. To verify theoretical models and modify and improve them, laboratory tests are performed. In recent years, there has been increasing emphasis in measurement of small-magnitude local strains to define stiffness at low strains similar to those encountered in the field in stress-path testing. To verify the theoretical model of the shaft-soil interface, a special test rig was developed that uses a cylindrical soil specimen with an inclusion in its center. The specimen represents a soil element surrounding a structural inclusion. The shaft-sand interface was investigated by small-magnitude local measurement of interface strains and thereby interface stresses and displacements during axial loading of the inclusion. The results are compared with those inferred from global measurements of interface variables. The advantages of the small-magnitude local strain measurements in determining the interface model parameters are presented. The use of the measured quantities in an elasto-plastic interface model is demonstrated by capturing the effects of confining stresses and boundary conditions of the soil specimen surrounding an axially loaded inclusion as well as the surface roughness of the inclusion.

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Tesis sobre el tema "Interface measurements"

Hollrah, Matthew M. "Development and implementation of an underwater system for interface wave measurements". Diss., Columbia, Mo. : University of Missouri-Columbia, 2005. http://hdl.handle.net/10355/4233.

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Thesis (M.S.)--University of Missouri-Columbia, 2005.
The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file viewed on (December 12, 2006) Includes bibliographical references.

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Brunt, T. A. "Stress measurements at the solid-liquid interface using a micromechanical sensor". Thesis, University of Cambridge, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.597031.

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This dissertation describes the development of atomic force microscope cantilevers as surface stress sensors for monitoring surface processes at the solid-liquid interface. Micromechanical bending-beams are highly sensitive stress sensors; stress changes as small as 10^-4Nm^-1 can be detected using this type of bending-beam, whereas typical stress changes associated with monolayer processes are 0.1-1Nm^-1. As well as offering high sensitivity, micromechanical cantilevers have a fast response time (0.5ms in liquids) which means they are ideally suited for fast stress measurements. Textured (111) surfaces were prepared by thermal evaporation of Au onto one face of the Si₃N₄ cantilevers. These cantilevers were used as electrodes to monitor the stress changes associated with electrochemical processes, in conjunction with electrochemical measurements such as cyclic voltammetry and chronoamperometry. The potential-dependent adsorption of C1^- and I^- anions gave rise to stress changes of 0.5-1Nm^-1, and in both cases, adsorption of the anion was associated with an increase in compressive surface stress. Underpotential deposition (UPD) of Pb and Ag on Au(111) has been studied in detail. For Pb UPD on Au(111) a compressive stress change of 1Nm^-1 was measured on deposition of one monolayer. More detailed features in the surface stress-potential curve have been directly related to features in the cyclic voltammogram and known structural processes such as the potential-dependent compression of the Pb monolayer. The measured stress changes for Ag UPD on Au(111) were also 1Nm^-1 and did not display a strong dependence on the nature of the anion present in the electrolyte.

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Cheney, David J. "Measurements of the air-sea interface from an instrumented small buoy". Thesis, Monterey, California. Naval Postgraduate School, 2011. http://hdl.handle.net/10945/5502.

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Approved for public release; distribution is unlimited.
An instrumented spar buoy, Met-on-a-Stick (MOAS), was designed, deployed, and validated for measuring the air sea interface processes at multiple levels. This system was deployed in June 2010 off the coast of California, and January and February 2011 in Monterey Bay. The system provides mean measurements of wind, temperature, and humidity at multiple levels within 3 m above the sea surface and measurements of sea surface temperature at three levels below ocean surface. It is small enough to be deployed and retrieved by two people. This thesis work introduces the design and the instrumentation of the system and evaluates the ability of the system for characterizing near-surface vertical variations of the marine boundary layer. The results indicate that the platform performance is as expected and is capable of providing measurements to characterize the fine variations close to the air-sea interface. We foresee a broad use of the MOAS in the future due to its low-cost and ease of deployment. Future improvements of the system include the use of better wind and GPS sensors to increase the quality of wind and wave measurements from the MOAS.

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Huang, Chender 1960. "Characterization of interface trap density in power MOSFETs using noise measurements". Thesis, The University of Arizona, 1988. http://hdl.handle.net/10150/276872.

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Low-frequency noise has been measured on commercial power MOSFETs. These devices, fabricated with the VDMOS structure, exhibit a 1/f type noise spectrum. The interface state density obtained from noise measurements was compared with that obtained from the subthreshold-slope method. Reasonable agreement was found between the two measurements. The radiation effects on the noise power spectral density were also investigated. The results indicated that the noise can be attributed to the generation of interface traps near the Si-SiO₂ interface. The level of interface traps generated by radiation was bias dependent. The positive gate bias gave rise to the largest interface-trap density.

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Todsen, James Lee 1967. "Comparison of interface trap measurements in high field stressed MOS transistors". Thesis, The University of Arizona, 1992. http://hdl.handle.net/10150/278198.

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The effects of high field stress on interface trap densities (Dit in MOS transistors are compared using three methods: charge-pumping, subthreshold swing and 1/f noise. The experimental MOS devices subjected to high field stress originated from two wafer lots processed with different concentrations of copper in the buffered oxide etchant. For the charge-pumping and subthreshold methods, no dependency is found on stress current polarity, wafer lot or transistor type (n- or p-channel). These two methods yield similar Dit values. For the 1/f noise method, no dependency is found on current polarity or wafer lot. However, the noise in the n-channel devices increases by several orders of magnitude as compared to the p-channel devices. A large discrepancy is found between Dit calculated from 1/f noise when compared to charge-pumping/subthreshold swing results for n-channel transistors. For p-channel transistors, the 1/f Dit results are in much better agreement with the results of the other two methods.

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Bayram, Alican. "Identification Of Kinematic Parameters Using Pose Measurements And Building A Flexible Interface". Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614819/index.pdf.

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Robot manipulators are considered as the key element in flexible manufacturing systems. Nonetheless, for a successful accomplishment of robot integration, the robots need to be accurate. The leading source of inaccuracy is the mismatch between the prediction made by the robot controller and the actual system. This work presents techniques for identification of actual kinematic parameters and pose accuracy compensation using a laser-based 3-D measurement system. In identification stage, both direct search and gradient methods are utilized. A computer simulation of the identification is performed using virtual position measurements. Moreover, experimentation is performed on industrial robot FANUC Robot R-2000iB/210F to test full pose and relative position accuracy improvements. In addition, accuracy obtained by classical parametric methodology is improved by the implementation of artificial neural networks. Neuro-parametric method proves an enhanced improvement in simulation results. The whole proposed theory is reflected by developed simulation software throughout this work while achieving accuracy nine times better when comparing before and after implementation.

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McCallum, Andrew Thomas. "Interface scattering in giant magnetoresistance structures studied with in-situ conductance measurements". Diss., Connect to online resource, 2005. http://wwwlib.umi.com/cr/colorado/fullcit?p3190352.

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Nölscher, Anke C. [Verfasser]. "Total OH reactivity measurements at the biosphere-atmosphere interface / Anke Christine Nölscher". Mainz : Universitätsbibliothek Mainz, 2013. http://d-nb.info/1034737562/34.

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Gross, Linda C. M. "Applications of droplet interface bilayers : specific capacitance measurements and membrane protein corralling". Thesis, University of Oxford, 2011. http://ora.ox.ac.uk/objects/uuid:0b7ffba6-b86d-499c-a93f-3b2fc46a427b.

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Droplet Interface Bilayers (DIBs) have a number of attributes that distinguish them from conventional artificial lipid bilayers. In particular, the ability to manipulate bilayers mechanically is explored in this thesis. Directed bilayer area changes are used to make precise measurements of the specific capacitance of DIBs and to control the two dimensional concentration of a membrane protein reconstituted in the bilayer. Chapter 1 provides a general introduction to the role of the lipid membrane en- vironment in the function of biological membranes and their integral proteins. An overview of model lipid bilayer systems is given. Chapter 2 introduces work carried out in this laboratory previously and illustrates the experimental setup of DIBs. Some important bilayer biophysical concepts are covered to provide the theoretical background to experiments in this and in later chapters. Results from the characterisation of DIBs are reported, and an account of the development of methods to manipulate the bilayer by mechanical means is given. Chapter 3 describes experiments that apply bilayer area manipulation in DIBs to achieve precise measurement of specific capacitance in a range of lipid systems. Chapter 4 reports results from experiments investigating the response of bilayer specific capacitance to an applied potential. Chapter 5 covers the background and experimental setup for total internal fluo- rescence microscopy experiments in DIBs and describes the expression, purification and characterisation of the bacterial β-barrel membrane protein pore α-Hemolysin. Chapter 6 describes experiments that apply the mechanical manipulation of bilayer area in DIBs to the corralling and control of the surface density of α-Hemolysin.

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Stith, Jason C. "RAILROAD TRACK PRESSURE MEASUREMENTS AT THE RAIL/TIE INTERFACE USING TEKSCAN SENSORS". UKnowledge, 2005. http://uknowledge.uky.edu/gradschool_theses/213.

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It has been desirable for years to develop non-intrusive/non-invasiveprocedures to determine the pressures and stresses at various levels andinterfaces in the railroad track structure in order to optimize track designs andimprove subsequent track performance. Recent research has developedsatisfactory procedures for measuring pressures in the track structure at theballast/subballast/subgrade levels using earth pressure cells. The researchreported in this thesis documents the development of a technique for measuringthe pressures in the track, at the rail/tie plate/tie interfaces, using a very thinpressure sensitive Tekscan sensor. The Tekscan Measurement System uses asensor composed of a matrix-based array of force sensitive cells, similar to ministrain gauges, to obtain accurate pressure distributions between two surfaces inthe track. This thesis specifically describes: 1) the optimum procedure to installthe sensors into the track, 2) the recommended practices to effectively collectdata with the software, and 3) the accepted techniques for analyzing the results.Both laboratory calibration and in-track testing have been conducted and theresults are presented. The findings attest to the usefulness and practicality of theprocedure for accurately measuring pressures in railroad tracks. The proceduremay also be applicable for a wide variety of specific track related measurementssuch as validating curve geometric criteria, assessing crossing diamond impactpressures, and evaluating the advantages/disadvantages of various types of tieplates, fastenings and tie compositions.

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Libros sobre el tema "Interface measurements"

International Workshop on Transport at the Air Sea Interface (2006 University of Heidelberg). Transport at the air-sea interface: Measurements, models and parametrizations. Berlin: Springer, 2007.

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Geological Survey (U.S.), ed. MacHÓ: A computer interface to calculate the thermodynamic and transport properties of pure water. [Menlo Park, CA]: U.S. Dept. of the Interior, U.S. Geological Survey, 1991.

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Geological Survey (U.S.), ed. MacHO□: A computer interface to calculate the thermodynamic and transport properties of pure water. [Menlo Park, CA]: U.S. Dept. of the Interior, U.S. Geological Survey, 1991.

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Geological Survey (U.S.), ed. MacHb2sO: A computer interface to calculate the thermodynamic and transport properties of pure water. [Menlo Park, CA]: U.S. Dept. of the Interior, U.S. Geological Survey, 1991.

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Kuhn, Gerhard. Description and user manual for a web-based interface to a transit-loss accounting program for Monument and Fountain Creeks, El Paso and Pueblo counties, Colorado. Reston, Va: U.S. Geological Survey, 2007.

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Peters, Ellis Scott. A Comparison of thermography, interface pressure and transcutaneous oxygen measurements in assessing pressure sore risk in wheelchair users. Poole: Bournemouth University, 1999.

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1944-, Ohshima Hiroyuki y Furusawa Kunio 1937-, eds. Electrical phenomena at interfaces: Fundamentals, measurements, and applications. 2^a ed. New York: M. Dekker, 1998.

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Abe, Masahiko, ed. Measurement Techniques and Practices of Colloid and Interface Phenomena. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-5931-6.

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Couch, Gregory Geddes. Computer image measurement of axisymmetric fluid/liquid interfaces. Ottawa: National Library of Canada = Bibliothèque nationale du Canada, 1993.

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G, McDonough Walter y National Institute of Standards and Technology (U.S.), eds. Workshop on Micro-Mechanics Measurement Technologies for Fiber-Polymer Interfaces. Gaithersburg, MD: U.S. Dept. of Commerce, Technology Administration, National Institute of Standards and Technology, 1997.

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Capítulos de libros sobre el tema "Interface measurements"

Trivedi, R. y J. D. Hunt. "Surface and Interface Energy Measurements". En The Mechanics of Solder Alloy Wetting and Spreading, 191–226. Boston, MA: Springer US, 1993. http://dx.doi.org/10.1007/978-1-4684-1440-0_7.

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Nyman, Petter. "Humidity Measurements". En Encyclopedia of Wildfires and Wildland-Urban Interface (WUI) Fires, 1–5. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-51727-8_116-1.

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Guillaume, Eric. "Emissions Measurements". En Encyclopedia of Wildfires and Wildland-Urban Interface (WUI) Fires, 1–20. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-319-51727-8_117-1.

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Nyman, Petter. "Humidity Measurements". En Encyclopedia of Wildfires and Wildland-Urban Interface (WUI) Fires, 644–48. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-319-52090-2_116.

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Guillaume, Eric. "Emissions Measurements". En Encyclopedia of Wildfires and Wildland-Urban Interface (WUI) Fires, 253–72. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-319-52090-2_117.

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Berzins, Maris, Laila Chera y Talis Millers. "Aqueous Suspensions of Plasma-Prepared Fine Alumina - A Study by Electrokinetic Measurements". En Interface Controlled Materials, 184–88. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2005. http://dx.doi.org/10.1002/352760622x.ch31.

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Ellis, T. H., M. Morin, L. H. Dubois, M. J. Cardillo y S. D. Kevan. "Direct Measurements of Surface Kinetics by Time-Resolved Electron Energy Loss Spectroscopy". En Kinetics of Interface Reactions, 63–70. Berlin, Heidelberg: Springer Berlin Heidelberg, 1987. http://dx.doi.org/10.1007/978-3-642-72675-0_6.

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Iskra, K. A., Z. W. Hendrikse, G. D. van Albada, B. J. Overeinder y P. M. A. Sloot. "Performance Measurements on Dynamite/DPVM". En Recent Advances in Parallel Virtual Machine and Message Passing Interface, 27–38. Berlin, Heidelberg: Springer Berlin Heidelberg, 2000. http://dx.doi.org/10.1007/3-540-45255-9_8.

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Gropp, William y Ewing Lusk. "Reproducible Measurements of MPI Performance Characteristics". En Recent Advances in Parallel Virtual Machine and Message Passing Interface, 11–18. Berlin, Heidelberg: Springer Berlin Heidelberg, 1999. http://dx.doi.org/10.1007/3-540-48158-3_2.

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Weilandt, E., A. Menck, M. Binggeli y O. Marti. "Friction Force Measurements on Graphite Steps under Potential Control". En Nanoscale Probes of the Solid/Liquid Interface, 307–15. Dordrecht: Springer Netherlands, 1995. http://dx.doi.org/10.1007/978-94-015-8435-7_17.

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Actas de conferencias sobre el tema "Interface measurements"

Olsen, Dan R. y Bradley W. Halversen. "Interface usage measurements in a user interface management system". En the 1st annual ACM SIGGRAPH symposium. New York, New York, USA: ACM Press, 1988. http://dx.doi.org/10.1145/62402.62420.

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Kallinen, Johanna, Arto Voutilainen, Sinoj Cyriac y Antti Nissinen. "Electrical Tomography Sensors - Interface Level Measurements Inside Desalters and Dehydrators". En ADIPEC. SPE, 2024. http://dx.doi.org/10.2118/222674-ms.

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Abstract In crude oil process vessels, precise control of oil and water levels is vital. In oil refining, high-voltage electrostatic coalescers create strong electric fields for desalting and dehydration, which may disrupt electrical level measurements. Stilling wells improve measurement conditions and shield devices from external electrical interference. This paper proposes enclosing electric tomography- based level measurement technology within a perforated stilling well to counteract high-voltage grid effects. Electrical Tomography (ET) enables comprehensive real-time monitoring of material distributions in various environments, such as pipes, tanks, and vessels. The ET probe sensor provides information on liquid levels within separators, identifying water-emulsion, emulsion-oil and oil-gas interfaces. The probe sensor is confined by a rather narrow stilling well to investigate its effects on measurement accuracy. The stilling well, with an inner diameter of 91.3 mm, accommodated a probe with a diameter of 59.0 mm. The system was tested with 11 different configurations of stratified liquids so that its level measurement capabilities were assessed with water, emulsion, oil and gas. In general, ET measurements within stilling wells are very localized since the proximity of the metal wall of the stilling well affects the electric interactions between the electrodes. The test results showed that the measured information still contains a sufficient amount of information so that the conductivity profile and subsequent interface levels can be estimated with good accuracy. The Root Mean Square Error (RMSE) across all interface levels in the entire series of test cases was 20.6 mm. This equates to approximately 1% of the length of the measurement area. This is of the same order of magnitude as in standard test measurements in identical conditions but without the stilling well. Electrical Tomography is well-suited for real-time measurement of various interface levels in challenging operating conditions where good repeatability and time-resolution are needed. This study demonstrated that Electrical Tomography based level measurements are successful even when installed in narrow stilling wells, without significant impact on measurement accuracy.

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Seaver, Mark, A. E. Frost y M. D. Duncan. "Near-field Optical Measurements at the Liquid/Air Interface". En Laser Applications to Chemical Analysis. Washington, D.C.: Optica Publishing Group, 1994. http://dx.doi.org/10.1364/laca.1994.wa.3.

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Near-field optical microscopy offers the benefit of dramatically improved optical resolution [1] in exchange for working in close proximity (10-50nm) to a thin sample (<20nm). Monolayers at the liquid/air interface fulfill the thin sample criterion and are spectroscopically disctict from the supporting liquid. However, the mobility of the interface suggests that when a tapered probe approaches closely, attractive forces may cause the interface to jump up and submerge the probe at probe-sample spacings much greater than the required working distance for near-field optics. We detect the evanescent field decay above the liquid/air interfaces for glycerol, mineral oil, and water. The ability to measure these evanescent decays demonstrates that near-field approach to the liquid/air interface is possible. The measured evanescent decay lengths agree well with the predicted values. The presence of gravity waves in deep (1-2 cm) liquid samples sets a lower limit on the distance of closest approach but does not prevent near-field measurements.

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Zhai, Zhongsheng, Xuanze Wang, Yuning Zhong y Qinghua Lv. "Displacement measurement based on TWAIN interface". En Fourth International Symposium on Precision Mechanical Measurements, editado por Yetai Fei, Kuang-Chao Fan y Rongsheng Lu. SPIE, 2008. http://dx.doi.org/10.1117/12.819546.

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Schwingshackl, C. W., E. P. Petrov y D. J. Ewins. "Validation of Test Rig Measurements and Prediction Tools for Friction Interface Modelling". En ASME Turbo Expo 2010: Power for Land, Sea, and Air. ASMEDC, 2010. http://dx.doi.org/10.1115/gt2010-23274.

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The modelling of friction contact interfaces in structural dynamics attracts much interest in the gas turbine industry. In order to obtain reliable predictions of typical friction interfaces, such as encountered in under platform dampers or blade roots, accurate characteristics of friction interfaces must be provided to the analysis. It must be ensured that a sufficient number of parameters are provided, characterising all aspects of the friction contact, that the values are measured accurately, and that the contact parameters are interpreted and used correctly in the numerical modelling of the contact interfaces. This investigation demonstrates that measured friction coefficient and tangential contact stiffness are sufficient to reproduce the experimental friction interface behaviour and that these two parameters can be measured reliably in the available test rig. In combination with fine nonlinear interface meshes and accurate contact pressure representations, the measured interface behaviour of stick, micro- and macroslip is reproduced with good accuracy. The capability of modelling the microslip behaviour for the contact interface by a multitude of friction contact elements is explored and the effect of the normal stress distribution over the contact area on the microslip is studied.

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Larsen, Eric P. y Raquel Perez-Castillejos. "MATLAB interface for portable microelectrode impedance measurements". En 2015 41st Annual Northeast Biomedical Engineering Conference (NEBEC). IEEE, 2015. http://dx.doi.org/10.1109/nebec.2015.7117213.

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Winter, Christophe y Yves Perriard. "Haptic tactile interface (HTI): Friction coefficient measurements". En 2013 International Conference on Electrical Machines and Systems (ICEMS). IEEE, 2013. http://dx.doi.org/10.1109/icems.2013.6713253.

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Zheng, Jiantao y Suresh K. Sitaraman. "Superlayer Test for Interfacial Fracture Toughness Measurements". En ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-61839.

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Knowledge of the mode-mixity (?) dependent interfacial fracture toughness (Γ) is needed to predict the interface delamination and the component reliability of thin-film structures. Mode-mixity, ?, is a measure of the relative shearing to tensile opening of the interface crack near the tip. Typically, Γ increases as ? increases, such that the delamination is less likely when the loading on the interface is shear-dominated. The measurement of mode-mixity dependent Γ has been a challenge for thin film interfaces. The single-strip superlayer test, developed by the authors, eliminates the shortcomings of current testing methods. This test employs a stress-engineered superlayer to drive the interfacial delamination between the thin-film and the substrate. An innovative aspect of the proposed test is to introduce a release layer of varying width between the interested interfaces to control the amount of energy available for delamination propagation. By designing a decreasing area of the release layer, it is possible to arrest the interfacial delamination at a given location, and the interfacial fracture toughness or critical energy release rate can be found at the location where the delamination ceases to propagate. Design, preparation, and execution of the test are presented. Results are shown for Ti/Si interfaces of different mode mixities.

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Paddock, Carolyn A., Gary L. Eesley, Bruce M. Clemens y James P. Stec. "Transient thermoreflectance measurements of thermal impedance at metal-metal interfaces". En International Laser Science Conference. Washington, D.C.: Optica Publishing Group, 1986. http://dx.doi.org/10.1364/ils.1986.tub6.

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The interface between two different metallic layers can alter the thermal transport in a direction perpendicular to the film plane. Previously we have reported on transient thermoreflectance (TTR) measurements of thermal diffusion in compositionally modulated Ni-Zr and Ni-Ti films which contain many interfaces.1 The thermal diffusivity of these films was much smaller than that measured for the single element films. We use TTR to study the thermal impedance of four different metal-metal interfaces with varying atomic size mismatch. The structural order of metal-metal inter faces is very sensitive to this mismatch between the constituent elements. For Ni-metal interfaces, the size mismatch increases in the order Cu, Mo, Ti, Zr.2 The results of the TTR measurements for the single element films and for the four bilayer films Ni-Cu, Ni-Mo, Ni-Ti, Ni-Zr indicate that the thermal impedance of the interface is directly related to the atomic size mismatch of the constituent elements. The interface decreases the thermal diffusion in the film compared to that measured for constituent single element films. A numerical model has been developed to determine the thermal impedance of the interface from the measured data.

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Draghici, O., I. Batkin, M. Bolic y I. Chapman. "The MouthPad: A tongue-computer interface". En 2013 IEEE International Symposium on Medical Measurements and Applications (MeMeA). IEEE, 2013. http://dx.doi.org/10.1109/memea.2013.6549759.

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Informes sobre el tema "Interface measurements"

Leduc, J. y S. M. Ahmed. Impedance measurements at the semiconductor-solution interface. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1985. http://dx.doi.org/10.4095/307071.

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Wilczak, James M., Jr Bedard y Alfred J. Turbulent Pressure Measurements Above the Air-sea Interface. Fort Belvoir, VA: Defense Technical Information Center, septiembre de 1997. http://dx.doi.org/10.21236/ada629304.

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Best, Cody, Carl Hart y Michael Muhlestein. Data acquisition software for impedance tube measurements. Engineer Research and Development Center (U.S.), octubre de 2022. http://dx.doi.org/10.21079/11681/45740.

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Transmission impedance tube measurements are necessary to measure the asymmetric acoustic property known as Willis coupling. However, software is required to measure and store data from an impedance tube for acoustic material characterization. This report details the overall structure of custom-developed software built from low-level functions. Software libraries from the data acquisition system as well as the HDF5 file system are the basis for the code. A command line user interface guides a user through the necessary steps in data collection.

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Terrill, Eric J., Jeff Sherman y W. K. Melville. Autonomous Profiler Measurements of the Air-Sea Interface in Very High Sea States. Fort Belvoir, VA: Defense Technical Information Center, septiembre de 2003. http://dx.doi.org/10.21236/ada628838.

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Bruder, Brittany L., Katherine L. Brodie, Tyler J. Hesser, Nicholas J. Spore, Matthew W. Farthing y Alexander D. Renaud. guiBath y : A Graphical User Interface to Estimate Nearshore Bathymetry from Hovering Unmanned Aerial System Imagery. Engineer Research and Development Center (U.S.), febrero de 2021. http://dx.doi.org/10.21079/11681/39700.

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This US Army Engineer Research and Development Center, Coastal and Hydraulics Laboratory, technical report details guiBathy, a graphical user interface to estimate nearshore bathymetry from imagery collected via a hovering Unmanned Aerial System (UAS). guiBathy provides an end-to-end solution for non-subject-matter-experts to utilize commercia-off-the-shelf UAS to collect quantitative imagery of the nearshore by packaging robust photogrammetric and signal-processing algorithms into an easy-to-use software interface. This report begins by providing brief background on coastal imaging and the photogrammetry and bathymetric inversion algorithms guiBathy utilizes, as well as UAS data collection requirements. The report then describes guiBathy software specifications, features, and workflow. Example guiBathy applications conclude the report with UAS bathymetry measurements taken during the 2020 Atlantic Hurricane Season, which compare favorably (root mean square error = 0.44 to 0.72 m; bias = -0.35 to -0.11 m) with in situ survey measurements. guiBathy is a standalone executable software for Windows 10 platforms and will be freely available at www.github.com/erdc.

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Fassnacht, Steven, Kazuyoshi Suzuki, Jessica Sanow, Graham Sexstone, Anna Pfohl, Molly Tedesche, Bradley Simms y Eric Thomas. Snow surface roughness across spatio-temporal scales. Engineer Research and Development Center (U.S.), septiembre de 2024. http://dx.doi.org/10.21079/11681/49199.

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The snow surface is at the interface between the atmosphere and Earth. The surface of the snowpack changes due to its interaction with precipitation, wind, humidity, short- and long-wave radiation, underlying terrain characteristics, and land cover. These connections create a dynamic snow surface that impacts the energy and mass balance of the snowpack, blowing snow potential, and other snowpack processes. Despite this, the snow surface is generally considered a constant parameter in many Earth system models. Data from the National Aeronautics and Space Administration (NASA) Cold Land Processes Experiment (CLPX) collected in 2002 and 2003 across northern Colorado were used to investigate the spatial and temporal variability of snow surface roughness. The random roughness (RR) and fractal dimension (D) metrics used in this investigation are well correlated. However, roughness is not correlated across scales, computed here from snow roughness boards at a millimeter resolution and airborne lidar at a meter resolution. Process scale differences were found based on land cover at each of the two measurement scales, as appraised through measurements in the forest and alpine.

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Martinez, Melissa. Lab Basics: Semi-Automated Slice Lab. ConductScience, julio de 2022. http://dx.doi.org/10.55157/cs20220705.

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Brain tissue slices are used to study synaptic function in the brain. Brain slice chambers maintain the slices for experimental examination, allowing investigation into cellular responses, making them suitable for electrophysiological and metabolic measurements. Interface and submerged chambers are common types, differing in how oxygen is supplied to the slice. Semi-automated slice workstations efficiently assess brain tissue slices, supporting multiple slices simultaneously. These workstations include cameras, monitors, and processors to observe tissues effectively. They save time, enhance efficiency, and offer adjustable magnification for focused observations. Semi-automated labs are practical tools for investigating brain tissues in various chamber types.

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Lever, James, Susan Taylor, Garrett Hoch y Charles Daghlian. Evidence that abrasion can govern snow kinetic friction. Engineer Research and Development Center (U.S.), diciembre de 2021. http://dx.doi.org/10.21079/11681/42646.

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The long-accepted theory to explain why snow is slippery postulates self-lubrication: frictional heat from sliding melts and thereby lubricates the contacting snow grains. We recently published micro-scale interface observations that contradicted this explanation: contacting snow grains abraded and did not melt under a polyethylene slider, despite low friction values. Here we provide additional observational and theoretical evidence that abrasion can govern snow kinetic friction. We obtained coordinated infrared, visible-light and scanning-electron micrographs that confirm that the evolving shapes observed during our tribometer tests are contacting snow grains polished by abrasion, and that the wear particles can sinter together and fill the adjacent pore spaces. Furthermore, dry-contact abrasive wear reasonably predicts the evolution of snow-slider contact area and sliding-heat-source theory confirms that contact temperatures would not reach 0°C during our tribometer tests. Importantly, published measurements of interface temperatures also indicate that melting did not occur during field tests on sleds and skis. Although prevailing theory anticipates a transition from dry to lubricated contact along a slider, we suggest that dry-contact abrasion and heat flow can prevent this transition from occurring for snow-friction scenarios of practical interest.

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Maranghides, A. Initial Reconnaissance of the 2011 Wildland-Urban Interfaces Fires in Amarillo, Texas. Gaithersburg, MD: National Institute of Standards and Technology, 2011. http://dx.doi.org/10.6028/nist.tn.1708.

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The National Institute of Standards and Technology (NIST) is working to reduce the risk of fire spread in Wildland-Urban Interface (WUI) communities. An objective of this work is to develop first generation tools for improved risk assessment and risk mitigation in WUI communities at risk from wildfires. These tools will be developed and tested through a coordinated effort that includes laboratory and field measurements, physics-based fire behavior models, and economic cost analysis models. NIST and Texas Forest Service (TFS) worked together in October 2010 to train TFS personnel in the NIST-developed WUI data collection methodology. While the fires that started on February 27, 2011 were still burning around Amarillo, NIST and TFS decided to deploy the joint Team and document the WUI fire event loses and fire behavior. The Tanglewood WUI fire in the outskirts of Amarillo was responsible for the destruction of approximately 101 structures including 35 residences. Field measurements included structure particulars, specifically building construction materials, proximity and type of combustibles to the structure, and damage to wildland and residential vegetation. Documentation included over 29 000 photographs. The data collection and analysis will be documented in two phases, an initial reconnaissance/overview report and a technical report. This summary report will address the particulars of the joint NIST/TFS deployment and the data collection methodology used. Additionally, this report provides a summary of the primary structures lost. A second more detailed technical report will provide the event timeline reconstruction and general fire behavior observations as well as investigate the impacts of structure attributes, landscaping characteristics, topographical features and wildland fire exposure on structure survivability

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Wood, William. Conditions on Transmission Measurements I: When Does Secondary Scattering Interfere with the Measurement? Office of Scientific and Technical Information (OSTI), noviembre de 2014. http://dx.doi.org/10.2172/1164021.

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