deLaski, A.; Suozzo, M.
% of the electricity that powers the industrial sector flows through dry-type distribution transformers. These transformers are very efficient most convert in excess of 95% of input power to output power. However, because transformers are generally energized 24...
Effective market transformation from energy centers
Chace, J.; Fountain, M.; Hydelman, M.; Grundon, T.; Benton, C.C.
1998-07-01T23:59:59.000Z
In this decade, several energy centers, such as PG and E's Pacific Energy Center in San Francisco have played a particularly interesting role in educating building professionals and utility customers about energy-efficient design and technologies. Energy centers' upstream and mid-market efforts have evolved as practical, effective, and less expensive adjuncts or alternatives to promoting energy efficiency through downstream financial incentives. The centers' roles fit especially well in the context of a nascent deregulated gas and electric marketplace and its multiple market actors. Although California's centers differ in focus and objectives, they serve the common function of technology transfer and provide access to reliable information that balances the opportunism, and even recidivism, the evolving energy marketplace may create. Energy centers can be well-positioned to influence the flow of information among actors in an inherently chaotic, yet rich, building market. In this market, research institutions will continue to evolve new energy-efficient technologies; manufacturers will continue to search for new applications for their products; ESCO's will search for new energy efficiency services to promote; building design professionals will continue to have a pronounced effect on the market penetration of new technologies by adopting (or not adopting) energy-efficient products and practices. Equally important, end-users will continue to want unbiased information about energy-efficiency. This paper summarizes six year's experience with an energy center centered on a public good/energy conservation mission strategically targeted to building professionals. This approach facilitates and rationalizes the movement of information among market actors to transform the marketplace and accelerate implementation of energy efficiency.
Unanticipated Effects of Epoxy Impregnating Transformers
SANCHEZ,ROBERT O.; ARCHER,WENDEL E.
2000-08-23T23:59:59.000Z
Many Sandia components for military applications are designed for a 20-year life. In order to determine if magnetic components meet that requirement, the parts are subjected to selected destructive tests. This paper reviews the re-design of a power transformer and the tests required to prove-in the re-design. The re-design included replacing the Epon 828/Mica/methylenedianiline (curing agent Z) epoxy encapsulant with a recent Sandia National Laboratory (SNL) developed epoxy encapsulant. The new encapsulant reduces the Environmental Safety and Health (ES and H) hazards. Life testing of this re-designed transformer generated failures; an open secondary winding. An experimental program to determine the cause of the broken wires and an improved design to eliminate the problem was executed. This design weakness was corrected by reverting to the hazardous epoxy system.
Imperfection effects for multiple applications of the quantum wavelet transform
Marcello Terraneo; Dima L. Shepelyansky
2003-03-09T23:59:59.000Z
We study analytically and numerically the effects of various imperfections in a quantum computation of a simple dynamical model based on the Quantum Wavelet Transform (QWT). The results for fidelity timescales, obtained for a large range of error amplitudes and number of qubits, imply that for static imperfections the threshold for fault-tolerant quantum computation is decreased by a few orders of magnitude compared to the case of random errors.
Factors influencing the efficiency and cost effectiveness of large power transformers
Peacock, D.W.
1980-01-01T23:59:59.000Z
The purpose of this paper is to identify those factors that can influence transformer design, to identify some fundamental and practical constraints that the designer must satisfy, and to show the effect on transformer efficiency and evaluated cost.
Stanford University
Transformation and Surface Roughness Chih-Ying Chen June 2005 Financial support was provided through the Stanford permeabilities, accounting for phase transformations, the inviscid bubble train models coupled with relative permeability concepts were developed. The phase transformation effects were evaluated by accounting
Scripta Materialia 52 (2004) 461-466 Effect of 30 Tesla Magnetic Field on Transformations in a
Cambridge, University of
Scripta Materialia 52 (2004) 461-466 Effect of 30 Tesla Magnetic Field on Transformations transforms to ferrite. Thus, a 30 Tesla magnetic field can raise transformation temperatures by ~90Â°C during
Effects of stray DC currents on the performance of large core type transformers
Christini, J.M.; Girgis, R.S. (ABB Power and Company, Inc., Muncie, IN (US))
1992-01-01T23:59:59.000Z
This paper presents the results of a study made on the effects of stray DC current on power transformer performance. A circuit model was developed to analyze the magnetic behavior of three-phase five-leg core type transformers. The magnetic field distribution was obtained for several different operating conditions by taking into account core geometry, core design, magnitude of D.C. current, and magnitude of A.C. voltage. The change in transformer performance is discussed.
The effects of output transformers on distortion in audio amplifiers
Lanier, Ross Edwin
1949-01-01T23:59:59.000Z
Introduction ~. . . . . . . . , . . . . . . ~. . . . . 7 Frequency Discrimination. . . . . . . . . . . . . . . . 9 Harmonic Distortion. ~ ~. . . . ~ 21 Distortion by the Intermodulationmethod. . . . . . . . 47 Comparison of Harmonic and Intermodulation... current in the primary as a function of frequency . 19 Output voltage of transformer 3 without direct current in the primary as a function of frequency 20 Block diagram for measuring distortion by the harmonic method 26 Per cent harmonic distortion...
Salas Fernandez, Maria Guadalupe
1999-01-01T23:59:59.000Z
Several conditions were evaluated to determine their impact on Agrobacterium-mediated transformation efficiency. Temperature and acetosyringone (AS) effects were first studied in tobacco, as a plant model system and then applied to cotton...
Ferraro, R. J.; Osborne, R.; Stephens, R.
) an increase in loads that use power electronics in some type of power conversion configuration [1][2]. This paper presents applications of the constant-voltage transformer (CVT) for mitigating the effects of electric service voltage sags on industrial...
Effect of Phase Transformation on the Fracture Behavior of Shape Memory Alloys
Parrinello, Antonino
2013-07-24T23:59:59.000Z
. In order to achieve an effective design of SMA-based devices a thorough investigation of their behavior in the presence of cracks is needed. In particular, it is important to understand the effect of phase transformation on their fracture response...
Effects of finite sampling and additive noise on image reconstruction from Radon transform
Tsujimoto, E.M. (California Univ., Davis, CA (USA))
1988-12-01T23:59:59.000Z
The Radon transform arises naturally in the problem of reconstructing an image or cross section from line integral measurements through a specified object. Each line integral or ray is a sample of the Radon transform of the object and the set of all samples at a particular angle is called a projection or view. Consequently, the set of all possible samples at all possible projections in a particular plane constitutes the two-dimensional Radon transform. Of course, it is impossible to acquire an infinite number of data points for the purpose of image reconstruction. However, with a sufficient set of Radon transform samples, an images can be determined through various Radon transform inversion techniques. From this statement, however, arises the question of just what constitutes a sufficient set of Radon transform samples. Acquiring an insufficient number of samples results in various artifacts in the reconstructed image. On the other hand, taking too many samples utilizes the data inefficiently. Thus, the problem of interest is to determine the optimum number of projections and the optimum number of samples per projection required to adequately represent the Radon transform such that the image can be accurately reconstructed. The problem of image reconstruction is further complicated if noise is introduced in the projection domain. Noise may be caused by round-off error in the sampled projection data or by various other factors inherent in data acquisition processes. However, several filtering techniques can be implemented to suppress the effects of noise. Therefore, a second problem of interest is to study the effectiveness of different filtering techniques in noise suppression.
Optimization of a Flyback Transformer Winding Considering Two-Dimensional Field Effects, Cost
Optimization of a Flyback Transformer Winding Considering Two-Dimensional Field Effects, Cost and perhaps miti- gated. And both the cost and the loss in the litz-wire winding are strong functions and cost. In this paper, we address just such a case: a flyback trans- 1Although high-frequency winding
Experimental determination of the MHD-EMP effects on power distribution transformers
McConnell, B.W.; Barnes, P.R. (Oak Ridge National Lab., TN (United States)); Tesche, F.M. (Tesche (F.M.), Dallas, TX (United States))
1991-01-01T23:59:59.000Z
It is a well-established fact that geomagnetic storms influence electrical power transmission and distribution systems. Previous cases of such storms in the northern latitudes have resulted in occasional power disruptions, and in some cases, damage to transformers. These effects are caused by a time variation of the earth's magnetic field creating an induced electric field along the surface of the earth. This E-field acts as a voltage source along long power transmission or distribution lines, and if the line is connected to the earth at both ends, a quasi-dc current can flow. This current can cause unwanted saturation in the magnetic cores of transformers in the power system, and this, in turn produces harmonic distortion and transformer heating. This can lead to system upset (shutdown) and possibly transformer burn-out. The detonation of a high altitude nuclear explosion is also known to affect the magnetosphere, producing late-time variations of the earth's magnetic field for several hundreds of seconds. Known as the magnetohydrodynamic electromagnetic pulse (MHD-EMP), or E{sub 3}, this environment is of particular concern to electrical power systems in the event of a nuclear attack. Although the MHD-EMP induced currents can be significantly larger in magnitude, they last for a shorter period of time than do those from a geomagnetic storm. The effect of this environment compounds the adverse effects of the early-time high altitude EMP (HEMP) environment, posing a potentially serious threat to the electrical system. The present paper documents an experimental program designed to better understand the behavior of distribution-class transformers subjected to quasi-dc current excitation. Given the knowledge of the MHD-EMP-induced current flowing in a long power line, and the transformer response characteristics obtained in this program, it will be possible to make more accurate assessments of the behavior of the overall power system to EMP. 7 refs., 5 figs.
Mousavi Anijdan, S.H., E-mail: hashem.mousavi@mail.mcgill.ca [Department of Mining and Materials Engineering, McGill University, 3610 University Street, Montreal, Quebec, H3A 2B (Canada); Rezaeian, Ahmad [Department of Materials Engineering, Isfahan University of Technology, Isfahan 84156-83111 (Iran, Islamic Republic of); Yue, Steve [Department of Mining and Materials Engineering, McGill University, 3610 University Street, Montreal, Quebec, H3A 2B (Canada)
2012-01-15T23:59:59.000Z
In this investigation, by using continuous cooling torsion (CCT) testing, the transformation behavior of four microalloyed steels under two circumstances of austenite conditioning and non-conditioning was studied. A full scale hot-rolling schedule containing a 13-pass deformation was employed for the conditioning of the austenite. The CCT tests were then employed till temperature of {approx} 540 Degree-Sign C and the flow curves obtained from this process were analyzed. The initial and final microstructures of the steels were studied by optical and electron microscopes. Results show that alloying elements would decrease the transformation temperature. This effect intensifies with the gradual increase of Mo, Nb and Cu as alloying elements added to the microalloyed steels. As well, austenite conditioning increased the transformation start temperature due mainly to the promotion of polygonal ferrite formation that resulted from a pancaked austenite. The final microstructures also show that CCT alone would decrease the amount of bainite by inducing ferrite transformation in the two phase region. In addition, after the transformation begins, the deformation might result in the occurrence of dynamic recrystallization in the ferrite region. This could lead to two different ferrite grain sizes at the end of the CCT. Moreover, the Nb bearing steels show no sign of decreasing the strength level after the transformation begins in the non-conditioned situation and their microstructure is a mix of polygonal ferrite and bainite indicating an absence of probable dynamic recrystallization in this condition. In the conditioned cases, however, these steels show a rapid decrease of the strength level and their final microstructures insinuate that ferrite could have undergone a dynamic recrystallization due to deformation. Consequently, no bainite was seen in the austenite conditioned Nb bearing steels. The pancaking of austenite in the latest cases produced fully polygonal ferrite structures. - Highlights: Black-Right-Pointing-Pointer Adding alloying elements would decrease the transformation temperatures. Black-Right-Pointing-Pointer Austenite conditioning increases the transformation start temperature. Black-Right-Pointing-Pointer Deformation could induce the occurrence of dynamic recrystallization in ferrite region.
Cambridge, University of
components such as those, for example, used in the construction of power plants or submersibles. The complex Transformations and Their Effects on Ferritic Weld Residual Stresses with X-rays and Neutrons H. Dai1 , J, neutron diffraction, phase transformation, residual stress, synchrotron X-ray diffraction. Abstract. Weld
Transformation of 2-line ferrihydrite and its effect on arsenic adsorption
Her, Namryong
2009-05-15T23:59:59.000Z
Although the impacts of foreign species on aqueous transformations and arsenic adsorption by 2-line ferrihydrite (FH2) have been extensively studied, much less is known about the impact of transformation inhibitors on solid-state transformation...
Esquivel, Lina G.
2014-12-03T23:59:59.000Z
The purpose of this quantitative study was to review whether or not teachers’ perceptions of transformational leadership had an effect on student achievement. This study was one of five studies which examined leadership practices of principals...
Park, J.W.; Dec, J.; Bollag, J.M. (Pennsylvania State Univ., University Park, PA (United States)); Kim, J.E. (Kyngpook National Univ., Taegu (Korea, Republic of). Dept. of Agricultural Chemistry)
1999-06-15T23:59:59.000Z
Chlorinated phenols and anilines are transformed and detoxified in soil through oxidative coupling reactions mediated by enzymes or metal oxides. The reactions may be influences by humic constituents, such as syringaldehyde or catechol, that originate from lignin decomposition and are also subject to oxidative coupling. In this study, the effect of humic constituents on xenobiotic transformation was evaluated in vitro based on the determination of unreacted chlorophenols and chloroanilines. In experiments with peroxidase, laccase, and birnessite, the transformation of most chlorophenols was considerably enhanced by the addition of syringaldehyde. Less enhancement was observed using 4-hydroxybenzoic acid, and the addition of catechol resulted in a reduction of most transformations. The opposite was observed in experiments with tyrosinase, in which case catechol caused considerable enhancement of chlorophenol transformation. The varying effect of catechol can be explained by different transformation mechanisms involving either o-quinone coupling or free radical coupling. Regardless of the agent used to mediate the reactions, chloroanilines seemed to undergo nucleophilic addition to quinone oligomers, which resulted from coupling of the humic constituents. Catechol, which readily forms quinones and quinone oligomers, was most efficient in enhancing these reactions.
Development of Toroidal Core Transformers
Leon, Francisco
2014-05-31T23:59:59.000Z
The original objective of this project was to design, build and test a few prototypes of singlephase dry-type distribution transformers of 25 kVA, 2.4 kV primary to 120 V transformers using cores made of a continuous steel strip shaped like a doughnut (toroid). At different points during the development of the project, the scope was enhanced to include the more practical case of a 25 kVA transformer for a 13.8 kV primary system voltage. Later, the scope was further expanded to design and build a 50 kVA unit to transformer voltage from 7.62 kV to 2x120 V. This is a common transformer used by Con Edison of New York and they are willing to test it in the field. The project officially started in September 2009 and ended in May 2014. The progress was reported periodically to DOE in eighteen quarterly reports. A Continuation Application was submitted to DOE in June 2010. In May 2011 we have requested a non-cost extension of the project. In December 2011, the Statement of Project Objectives (SOPO) was updated to reflect the real conditions and situation of the project as of 2011. A second Continuation Application was made and funding was approved in 2013 by DOE and the end date was extended to May 2014. The technical challenges that were overcome in this project include: the development of the technology to pass the impulse tests, derive a model for the thermal performance, produce a sound mechanical design, and estimate the inrush current. However, the greatest challenge that we faced during the development of the project was the complications of procuring the necessary parts and materials to build the transformers. The actual manufacturing process is relatively fast, but getting all parts together is a very lengthy process. The main products of this project are two prototypes of toroidal distribution transformers of 7.62 kV (to be used in a 13.8 kV system) to 2x120 V secondary (standard utilization voltage); one is rated at 25 kVA and the other at 50 kVA. The 25 kVA transformer passed the impulse test in KEMA high-voltage laboratories. Additional products include: nine papers published in the IEEE Transactions on Power Delivery, one patent has been filed, three PhD students weresupported from beginning to graduation, five postdoctoral fellows, and three MSc students were partially supported. The electrical characteristics of our dry-type toroidal transformers are similar to those of the oil-immersed pole mounted transformers currently in use by many utilities, but toroids have higher efficiency. The no-load losses of the 50 kVA prototype are only 45 W. A standard transformer has no-load losses between 90 and 240 W. Thus, even the finest transformer built today with standard technology has double the amount of no-load losses than the prototype toroidal transformer. When the manufacturing process is prepared for mass production, the cost of a dry-type toroidal transformer would be similar to the price of an oil-filed standard design. However, because of the greatly reduced losses, the total ownership cost of a toroidal transformer could be about half of a traditional design. We got a grant from Power Bridge NY in the amount of $149,985 from June 2014 to May 2015 to continue developing the transformer with commercialization objectives. We are considering the possibility to incorporate a company to manufacture the transformers and have contacted investors. The current status of the real life testing is as follows: after several months of silence, Con Edison has re-started conversations and has shown willingness to test the transformer. Other companies, PSE&G and National Grid have recently also shown interest and we will present our product to them soon.
Cambridge, University of
The effect of inter-pass temperature on residual stresses in multi-pass welds produced using a low-to-martensite transformation temperatures offer an effective method of reducing residual stresses in strong, steel welds with a martensitic weld filler alloy that transforms at a low temperature, have been studied as a function
Ekeland, Terry Paul
2006-04-12T23:59:59.000Z
. Statement of the Problem Organizational commitment and transformational leadership have been found to correlate positively with each other and with organizational effectiveness (Allen & Meyer, 1996; Meyer, Stanley, Herscovitch, & Topolnytsky, 2002; Hoyt... job satisfaction, and increased productivity (Meyer & Allen, 1997; Mowday, Porter, & Steers, 1982). Additionally, ?There is considerable evidence that transformational leadership is effective? (Yukl, 1999, p. 287). According to Bass (1998), most...
Positive and negative effects of dielectric breakdown in transformer oil based magnetic fluids
Lee, Jong-Chul, E-mail: jclee01@gwnu.ac.kr [School of Mechanical and Automotive Engineering, Gangneung-Wonju National University, Wonju 220711 (Korea, Republic of)] [School of Mechanical and Automotive Engineering, Gangneung-Wonju National University, Wonju 220711 (Korea, Republic of); Lee, Won-Ho [Graduate School of Automotive Engineering, Gangneung-Wonju National University, Wonju 220711 (Korea, Republic of)] [Graduate School of Automotive Engineering, Gangneung-Wonju National University, Wonju 220711 (Korea, Republic of); Lee, Se-Hee [Department of Electrical Engineering, Kyungpook National University, Daegu 702701 (Korea, Republic of)] [Department of Electrical Engineering, Kyungpook National University, Daegu 702701 (Korea, Republic of); Lee, Sangyoup, E-mail: sangyoup@kist.re.kr [Biomedical Research Institute, Korea Institute of Science and Technology, Seoul 136791 (Korea, Republic of)] [Biomedical Research Institute, Korea Institute of Science and Technology, Seoul 136791 (Korea, Republic of)
2012-10-15T23:59:59.000Z
The transformer oil based magnetic fluids can be considered as the next-generation insulation fluids because they offer exciting new possibilities to enhance dielectric breakdown voltage as well as heat transfer performance compared to pure transformer oils. In this study, we have investigated the dielectric breakdown strength of the fluids with the various volume concentrations of nanoparticles in accordance with IEC 156 standard and have tried to find the reason for changing the dielectric breakdown voltage of the fluids from the magnetic field analysis. It was found that the dielectric breakdown voltage of pure transformer oil is around 12 kV with the gap distance of 1.5 mm. In the case of our transformer oil-based magnetic fluids with 0.08% < ? < 0.6% (? means the volume concentration of magnetic nanoparticles), the dielectric breakdown voltage shows above 40 kV, which is 3.3 times higher positively than that of pure transformer oil. Negatively in the case when the volume concentration of magnetic nanoparticles is above 0.65%, the dielectric breakdown voltage decreases reversely. From the magnetic field analysis, the reason might be considered as two situations: the positive is for the conductive nanoparticles dispersed well near the electrodes, which play an important role in converting fast electrons to slow negatively charged particles, and the negative is for the agglomeration of the particles near the electrodes, which leads to the breakdown initiation.
Core excitation effects in halo nuclei using a transformed oscillator basis
Lay, J. A.; Arias, J. M.; Moro, A. M. [Departamento de FAMN, Facultad de Fisica, Universidad de Sevilla, Apdo. 1065, E-41080 Sevilla (Spain); Gomez-Camacho, J. [Departamento de FAMN, Facultad de Fisica, Universidad de Sevilla, Apdo. 1065, E-41080 Sevilla, Spain and Centro Nacional de Aceleradores, Avda. Thomas A. Edison, E-41092, Sevilla (Spain)
2013-06-10T23:59:59.000Z
A recent generalization of the Transformed Harmonic Oscillator basis, intended to consider core excitations in the structure of one nucleon halo nuclei, is applied to the break up of {sup 11}Be. The reaction studied is {sup 11}Be+{sup 208}Pb at 69 MeV/nucleon. The experimental set up is designed to ensure pure dipole Coulomb excitations. Making use of the Equivalent Photon Method and the electromagnetic transition probabilities obtained with the transformed oscillator basis, a relevant contribution of the quadrupole excitations of the core is found. The inclusion of core excitations is, therefore, necessary for the correct extraction of the dipole electromagnetic transition probability of halo nuclei.
Lorentz transformation, time dilation, length contraction and Doppler Effect - all at once
Bernhard Rothenstein; Stefan Popescu
2007-12-04T23:59:59.000Z
We present a simple derivation of the Lorentz transformations for the space-time coordinates of the same event. It is based on the relative character of length and time interval as measured by observes in relative motion. We begin by accepting that the relative motion modifies in some particular way the result of these measurements. However we do not postulate the character of this distortion i.e. whatever it is dilation or contraction. The formulas accounting for length contraction, time dilation and Doppler shift are a byproduct of this derivation.
Schurig, David (Duke University) [Duke University
2007-02-21T23:59:59.000Z
I will explain how the transformation design method can yield a material specification that possesses the same electromagnetic behavior as a fairly general set of imagined space-time topologies. This method has been used to design invisibility cloaks, but the method is quite general and can be used to design a wide variety of interesting devices that guide, concentrate or shape electromagnetic fields in ways that would be difficult to manage with other design methodologies. Applications range from stealth to energy conversion and distribution to wireless communications to biomedical imaging. The drawback of the method is the complexity of the material specifications that it produces, which are in general anisotropic and inhomogeneous. Only with recent advances in the field of metamaterials can these specifications be realized. I will discuss how metamaterials accomplish this and what their limitations are, e.g. bandwidth, loss, frequency range etc. I will discuss in detail the recent implementation of an invisibility cloak in the microwave spectrum.
Not Available
2008-09-01T23:59:59.000Z
Summarizes the goals and activities of the DOE Solar Energy Technologies Program efforts within its market transformation subprogram.
Drewes, Frank
Proc. AGTIVE'99, to appear in LNCS Graph Transformation Modules and their Composition ? Frank,knirsch,kreo,kuskeg@informatik.uni-bremen.de Abstract. In this paper, we investigate the notion of transformation modules as a structuring principle. Based on the notion of transformation units, a concept that allows to specify binary relations on graphs
transformations: representations
Nguyen, Dat H.
Overview 1. Number transformations: from one base to another 2. Integer representations 3. Real rate, caches... #12; ECS 50, Discussion on 4/25 2 Integer Transformation: From Decimal to Binary Let, Discussion on 4/25 3 Integer Transformation: From Binary to Decimal Compute the weight of each digit position
Liu, David
We present a new technique for the design of transformation-optics devices based on large-scale optimization to achieve the optimal effective isotropic dielectric materials within prescribed index bounds, which is ...
Fuel Cell Technologies Publication and Product Library (EERE)
This Fuel Cell Technologies Program fact sheet outlines current status and challenges in the market transformation of hydrogen and fuel cell technologies.
SPATIAL TRANSFORMATIONS 1 Running head: Spatial transformations
Zacks, Jeffrey M.
SPATIAL TRANSFORMATIONS 1 Running head: Spatial transformations Multiple Systems for Spatial Imagery: Transformations of Objects and Bodies Jeffrey M. Zacks* and Barbara Tversky * Washington COGNITION & COMPUTATION #12;SPATIAL TRANSFORMATIONS 2 Abstract Problem-solving often requires imagining
Fourier Transform Pairs The Fourier transform transforms a function of
Masci, Frank
Fourier Transform Pairs The Fourier transform transforms a function of time, f(t), into a function of frequency, F(s): F {f(t)}(s) = F(s) = Z - f(t)e- j2st dt. The inverse Fourier transform transforms a func. The inverse Fourier transform of the Fourier trans- form is the identity transform: f(t) = Z - Z - f()e- j2s
The Laplace Transform 1 Laplace transform and inverse transform
Yengulalp, Lynne
The Laplace Transform Name: 1 Laplace transform and inverse transform Definition. Let f(t) be a function defined for t 0. Then the integral L {f(t)} = 0 e-st f(t)dt is said to be the Laplace transform of f provided the integral converges. Fill in the following Laplace transforms. L {tn } = L {eat } = L
VanGordon, James A.; Kovaleski, Scott D., E-mail: kovaleskis@missouri.edu; Norgard, Peter; Gall, Brady B. [Department of Electrical and Computer Engineering, University of Missouri, Columbia, Missouri 65211 (United States)] [Department of Electrical and Computer Engineering, University of Missouri, Columbia, Missouri 65211 (United States); Dale, Gregory E. [High Power Electrodynamics Group, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)] [High Power Electrodynamics Group, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
2014-02-15T23:59:59.000Z
The high output voltages from piezoelectric transformers are currently being used to accelerate charged particle beams for x-ray and neutron production. Traditional methods of characterizing piezoelectric transformers (PTs) using electrical probes can decrease the voltage transformation ratio of the device due to the introduction of load impedances on the order of hundreds of kiloohms to hundreds of megaohms. Consequently, an optical diagnostic was developed that used the photoelastic and electro-optic effects present in piezoelectric materials that are transparent to a given optical wavelength to determine the internal stress and electric field. The combined effects of the piezoelectric, photoelastic, and electro-optic effects result in a time-dependent change the refractive indices of the material and produce an artificially induced, time-dependent birefringence in the piezoelectric material. This induced time-dependent birefringence results in a change in the relative phase difference between the ordinary and extraordinary wave components of a helium-neon laser beam. The change in phase difference between the wave components was measured using a set of linear polarizers. The measured change in phase difference was used to calculate the stress and electric field based on the nonlinear optical properties, the piezoelectric constitutive equations, and the boundary conditions of the PT. Maximum stresses of approximately 10 MPa and electric fields of as high as 6 kV/cm were measured with the optical diagnostic. Measured results were compared to results from both a simple one-dimensional (1D) model of the piezoelectric transformer and a three-dimensional (3D) finite element model. Measured stresses and electric fields along the length of an operating length-extensional PT for two different electrical loads were within at least 50 % of 3D finite element simulated results. Additionally, the 3D finite element results were more accurate than the results from the 1D model for a wider range of electrical load impedances under test.
Transformers Transformer device used to raise (for
Bertulani, Carlos A. - Department of Physics and Astronomy, Texas A&M University
Transformers Transformer device used to raise (for transmission) and lower (for use) the ac with different #s of turns #12;Transformers Alternating primary current induces alternating magnetic flux in iron dt d NV B PP -= dt d NV B SS -= S S P P N V N V = #12;Transformers Transformation of voltage
Ota, T. A. [AWE, Aldermaston, Reading, Berkshire RG7 4PR (United Kingdom)] [AWE, Aldermaston, Reading, Berkshire RG7 4PR (United Kingdom)
2013-10-15T23:59:59.000Z
Photonic Doppler velocimetry, also known as heterodyne velocimetry, is a widely used optical technique that requires the analysis of frequency modulated signals. This paper describes an investigation into the errors of short time Fourier transform analysis. The number of variables requiring investigation was reduced by means of an equivalence principle. Error predictions, as the number of cycles, samples per cycle, noise level, and window type were varied, are presented. The results were found to be in good agreement with analytical models.
Testability Transformation --Program Transformation to Improve Testability
Binkley, David W.
Testability Transformation -- Program Transformation to Improve Testability Mark Harman1 , Andr, 26 Richmond Street, Glasgow G1 1XH, UK. Corresponding Author. Abstract. Testability transformation. The goal is to improve the testing process by transforming a program to one that is more amenable
Testability Transformation: Program Transformation to Improve Testability
Singer, Jeremy
Testability Transformation: Program Transformation to Improve Testability An Overview of Recent Author. Abstract. Testability transformation is a new form of program transfor- mation in which the goal to some chosen test adequacy criterion. The goal is to improve the testing process by transforming
Analyzing Signals Fourier transform
Sweldens, Wim
Page 1 1 Analyzing Signals Fourier transform s frequency content s linear combination of sin frequency analysis s windowed Fourier transform 6 #12;Page 4 7 Gabor Transform function to analyze window Gabor Transform Spatial domain Gabor domain b #12;Page 5 9 Gabor Transform Problems s discrete version
Sheng, Lei; Liu, Jing
2014-01-01T23:59:59.000Z
The room temperature liquid metal is quickly emerging as an important functional material in a variety of areas like chip cooling, 3D printing or printed electronics etc. With diverse capabilities in electrical, thermal and flowing behaviors, such fluid owns many intriguing properties that had never been anticipated before. Here, we show a group of unconventional phenomena occurring on the liquid metal objects. Through applying electrical field on the liquid metals immersed in water, a series of complex transformation behaviors such as self-assembling of a sheet of liquid metal film into a single sphere, quick mergences of separate metal droplets, controlled self-rotation and planar locomotion of liquid metal objects can be realized. Meanwhile, it was also found that two accompanying water vortexes were induced and reliably swirled near the rotating liquid metal sphere. Further, effects of the shape, size, voltage, orientation and geometries of the electrodes to control the liquid metal transformers were clar...
GIS TRANSFORMATIONS Conference Presentation
Tobler, Waldo
GIS TRANSFORMATIONS Conference Presentation Waldo Tobler Geography Department University, line, area, or field phenomena, then the sixteen common classes of transformation are: point -> point (scalar, vector, tensor) data, to obtain eighty distinct possible classes of transformation. The common
Sparks, Donald L.
coprecipitation on the Fe(II)catalyzed transformation of ferrihydrite Chunmei Chen, cmchen@udel.edu, Donald L in the natural environment. Aqueous Fe(II) has been shown to catalyze the transformation of ferrihydrite to more(II)induced transformation of ferrihydrite to secondary phases. Accordingly, we synthesized a series of 2line ferrihydrite
Jadidian, Jouya
An electrothermal hydrodynamic model is presented to evaluate effects of the applied lightning impulse voltage parameters such as polarity, magnitude, and rise time on the initiation and propagation of the streamers formed ...
transformation languages Introduction
Nierstrasz, Oscar
transformation languages Introduction Transformation languages are widely used for to process can I change / transform the design of a certain task without changing it's logic The common/and hierarchical or/and abstract set of information. It can even be a stream of data. Â· The transformation engine
Glowing Bacteria: Transformation Efficiency
Rose, Michael R.
1 Glowing Bacteria: Transformation Efficiency Purpose: To determine how well your E. coli cells took up and expressed GFP after transformation. Background: Transformation efficiency is a quantitative)______ (Fraction of DNA spread on plate) = ______ µg plasmid DNA spread on plate #12;2 5. Transformation efficiency
Learning Transformations From Video
Wang, Ching Ming
2010-01-01T23:59:59.000Z
on Natural Video . . . . . . . . . . . . . . . . .3 Learning Continuous Transformation from VideoProposed Video Coder
Perfect NOT transformation and conjugate transformation
Fengli Yan; Ting Gao; Zhichao Yan
2012-03-15T23:59:59.000Z
The perfect NOT transformation, probabilistic perfect NOT transformation and conjugate transformation are studied. Perfect NOT transformation criteria on a quantum state set $S$ of a qubit are obtained. Two necessary and sufficient conditions for realizing a perfect NOT transformation on $S$ are derived. When these conditions are not satisfied we discuss a probabilistic perfect NOT transformation (gate). We construct a probabilistic perfect NOT machine (gate) by a general unitary-reduction operation. With a postselection of the measurement outcomes, the probabilistic NOT gate yields perfectly complements of the input states. We prove that one can realize probabilistically the NOT gate of the input states secretly chosen from a certain set $S=\\{|\\Psi_1>, |\\Psi_2>,..., |\\Psi_n>\\}$ if and only if $|\\Psi_1>, |\\Psi_2>,...,$ and $|\\Psi_n>$ are linearly independent. We also generalize the probabilistic NOT transformation to the conjugate transformation in the multi-level quantum system. The lower bound of the best possible efficiencies attained by a probabilistic perfect conjugate transformation are obtained.
Cheng Xinbing; Liu Jinliang; Qian Baoliang; Zhang Yu; Zhang Hongbo [College of Photoelectrical Science and Engineering, National University of Defense Technology, Hunan 410073 (China)
2009-11-15T23:59:59.000Z
A high voltage pulse transformer (HVPT) is usually used as a charging device for the pulse forming line (PFL) of intense electron-beam accelerators (IEBAs). Insulation of the HVPT is one of the important factors that restrict the development of the HVPT. Until now, considerable effort has been focused on minimizing high field regions to avoid insulation breakdown between windings. Characteristics of the HVPT have been widely discussed to achieve these goals, but the effects of the PFL and load resistance on HVPT are usually neglected. In this paper, a HVPT is used as a charging device for the PFL of an IEBA and the effect of the change in the load resistance on the HVPT of the IEBA is presented. When the load resistance does not match the wave impedance of the PFL, a high-frequency bipolar oscillating voltage will occur, and the amplitude of the oscillating voltage will increase with the decrease in the load resistance. The load resistance approximates to zero and the amplitude of the oscillating voltage is much higher. This makes it easier for surface flashover along the insulation materials to form and decrease the lifetime of the HVPT.
Metrics for enterprise transformation
Blackburn, Craig D. (Craig David), S. M. Massachusetts Institute of Technology
2009-01-01T23:59:59.000Z
The objective of this thesis is to depict the role of metrics in the evolving journey of enterprise transformation. To this end, three propositions are explored: (i) metrics and measurement systems drive transformation, ...
Lei Sheng; Jie Zhang; Jing Liu
2014-01-30T23:59:59.000Z
The room temperature liquid metal is quickly emerging as an important functional material in a variety of areas like chip cooling, 3D printing or printed electronics etc. With diverse capabilities in electrical, thermal and flowing behaviors, such fluid owns many intriguing properties that had never been anticipated before. Here, we show a group of unconventional phenomena occurring on the liquid metal objects. Through applying electrical field on the liquid metals immersed in water, a series of complex transformation behaviors such as self-assembling of a sheet of liquid metal film into a single sphere, quick mergences of separate metal droplets, controlled self-rotation and planar locomotion of liquid metal objects can be realized. Meanwhile, it was also found that two accompanying water vortexes were induced and reliably swirled near the rotating liquid metal sphere. Further, effects of the shape, size, voltage, orientation and geometries of the electrodes to control the liquid metal transformers were clarified. Such events are hard to achieve otherwise on rigid metal or conventional liquid spheres. This finding has both fundamental and practical significances which suggest a generalized way of making smart soft machine, collecting discrete metal fluids, as well as flexibly manipulating liquid metal objects including accompanying devices.
Grun, R. L. Jr.
therefore are a function of the load squared. No-load losses occur from energizing the transformer steel and fore are continuous regardless of the transformer load. TRANSFORMER DESIGN Both types of losses are a fun ce here ion of design. If losses...
Spacetime transformation acoustics
C. García-Meca; S. Carloni; C. Barceló; G. Jannes; J. Sánchez-Dehesa; A. Martínez
2014-07-08T23:59:59.000Z
A recently proposed analogue transformation method has allowed the extension of transformation acoustics to general spacetime transformations. We analyze here in detail the differences between this new analogue transformation acoustics (ATA) method and the standard one (STA). We show explicitly that STA is not suitable for transformations that mix space and time. ATA takes as starting point the acoustic equation for the velocity potential, instead of that for the pressure as in STA. This velocity-potential equation by itself already allows for some transformations mixing space and time, but not all of them. We explicitly obtain the entire set of transformations that do not leave its form invariant. It is in these cases that ATA shows its true potential, allowing for building a transformation acoustics method that enables the full range of spacetime transformations. We provide an example of an important transformation which cannot be achieved with STA. Using this transformation, we design and simulate an acoustic frequency converter via the ATA approach. Furthermore, in those cases in which one can apply both the STA and ATA approaches, we study the different transformational properties of the corresponding physical quantities.
de Queiroz, Ricardo L.
Chapter 6 LAPPED TRANSFORMS FOR IMAGE COMPRESSION Ricardo L. de Queiroz Digital Imaging Technology aspects of lapped transforms and their applications to image compression. It is a subject that has been extensively studied mainly because lapped transforms are closely related to filter banks, wavelets, and time
Rice Transformation as a Means to Study Gene Expression
Jiang, Yiming
2010-10-12T23:59:59.000Z
An exceptionally effective transformation procedure has been established by using class I embryo-derived rice callus. Every treated callus clump yielded multiple independently transformed plants (average 40 plantlets). Analysis of genomic DNA blots...
Rice Transformation as a Means to Study Gene Expression
Jiang, Yiming
2010-10-12T23:59:59.000Z
An exceptionally effective transformation procedure has been established by using class I embryo-derived rice callus. Every treated callus clump yielded multiple independently transformed plants (average 40 plantlets). ...
Phase Transformations in Confined Nanosystems
Shield, Jeffrey E. [Department of Mechanical & Materials Engineering] [Department of Mechanical & Materials Engineering; Belashchenko, Kirill [Department of Physics & Astronomy] [Department of Physics & Astronomy
2014-04-29T23:59:59.000Z
This project discovered that non-equilibrium structures, including chemically ordered structures not observed in bulk systems, form in isolated nanoscale systems. Further, a generalized model was developed that effectively explained the suppression of equilibrium phase transformations. This thermodynamic model considered the free energy decrease associated with the phase transformation was less than the increase in energy associated with the formation of an interphase interface, therefore inhibiting the phase transformation. A critical diameter exists where the system transitions to bulk behavior, and a generalized equation was formulated that successfully predicted this transition in the Fe-Au system. This provided and explains a new route to novel structures not possible in bulk systems. The structural characterization was accomplished using transmission electron microscopy in collaboration with Matthew Kramer of Ames Laboratory. The PI and graduate student visited Ames Laboratory several times a year to conduct the experiments.
Zhu, Ruixian
2011-02-22T23:59:59.000Z
compression on a custom built magneto-thermo-mechanical test setup. Magnetostress, which is the difference in critical stress levels for the martensitic transformation with and without magnetic field, was determined as a function of crystallographic...
Zhu, Ruixian
2011-02-22T23:59:59.000Z
compression on a custom built magneto-thermo-mechanical test setup. Magnetostress, which is the difference in critical stress levels for the martensitic transformation with and without magnetic field, was determined as a function of crystallographic...
Sustainability transformations in Olympic host cities
Mokrushina, Ksenia
2012-01-01T23:59:59.000Z
The Olympic Games represent an unparalleled fast-track urban development opportunity for Olympic host cities. Taking the premise that the transformational effect of the Olympics has a potential to drive long-term urban ...
Cataldo, D.A.; Ligotke, M.W.; Bolton, H. Jr.; Fellows, R.J.; Van Voris, P.; McVeety, B.D.; Li, Shu-mei W.; McFadden, K.M.
1989-09-01T23:59:59.000Z
The terrestrial transport, chemical fate, and ecological effects of hexachloroethane (HC) smoke were evaluated under controlled wind tunnel conditions. The primary objectives of this research program are to characterize and assess the impacts of smoke and obscurants on: (1) natural vegetation characteristic of US Army training sites in the United States; (2) physical and chemical properties of soils representative of these training sites; and (3) soil microbiological and invertebrate communities. Impacts and dose/responses were evaluated based on exposure scenarios, including exposure duration, exposure rate, and sequential cumulative dosing. Key to understanding the environmental impacts of HC smoke/obscurants is establishing the importance of environmental parameters such as relative humidity and wind speed on airborne aerosol characteristics and deposition to receptor surfaces. Direct and indirect biotic effects were evaluated using five plant species and two soil types. HC aerosols were generated in a controlled atmosphere wind tunnel by combustion of hexachloroethane mixtures prepared to simulate normal pot burn rates and conditions. The aerosol was characterized and used to expose plant, soil, and other test systems. Particle sizes of airborne HC ranged from 1.3 to 2.1 {mu}m mass median aerodynamic diameter (MMAD), and particle size was affected by relative humidity over a range of 20% to 85%. Air concentrations employed ranged from 130 to 680 mg/m{sup 3}, depending on exposure scenario. Chlorocarbon concentrations within smokes, deposition rates for plant and soil surfaces, and persistence were determined. The fate of principal inorganic species (Zn, Al, and Cl) in a range of soils was assessed.
Karsai, K.; Kerenyi, D.; Kiss, L.
1987-01-01T23:59:59.000Z
The book deals with the following aspects of transformer engineering: general principles governing the function of transformers, iron cores, windings, stray losses caused by stray flux, the insulation of transformers, and the structural parts and accessories. This edition includes the developments in theory and practice on the basis of the authors' experience in design, manufacturing and testing of large transformers. New developments have been particularly extensive in the fields of new magnetic materials, cooling methods, dielectric strength for overvoltages of different types, and stray-load loss problems, which are presented in the book in detail. The many diagrams in the book can be used directly in the design, manufacture and testing of large transformers. In preparing their text, the authors have aimed to satisfy the demand for a work that summarizes the latest experience in development and design of large power transformers.
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
3-03-Grid-Transformation-Workshop Sign In About | Careers | Contact | Investors | bpa.gov Search News & Us Expand News & Us Projects & Initiatives Expand Projects &...
Dataflow Transformations in High-level DSP System Design
Bhattacharyya, Shuvra S.
in the application that can be analyzed and transformed for effective optimization. Because of the high level of abstraction at which they operate, the transformations employed in this process have a large impact on keyDataflow Transformations in High-level DSP System Design (Invited Paper) Sankalita Saha, Sebastian
Biochemical transformation of coals
Lin, M.S.; Premuzic, E.T.
1999-03-23T23:59:59.000Z
A method of biochemically transforming macromolecular compounds found in solid carbonaceous materials, such as coal is provided. The preparation of new microorganisms, metabolically weaned through challenge growth processes to biochemically transform solid carbonaceous materials at extreme temperatures, pressures, pH, salt and toxic metal concentrations is also disclosed. 7 figs.
Exploring Functional Mellin Transforms
J. LaChapelle
2015-01-08T23:59:59.000Z
We define functional Mellin transforms within a scheme for functional integration proposed in [1]. Functional Mellin transforms can be used to define functional traces, logarithms, and determinants. The associated functional integrals are useful tools for probing function spaces in general and $C^\\ast$-algebras in particular. Several interesting aspects are explored.
Deployment & Market Transformation (Brochure)
Not Available
2012-04-01T23:59:59.000Z
NREL's deployment and market transformation (D and MT) activities encompass the laboratory's full range of technologies, which span the energy efficiency and renewable energy spectrum. NREL staff educates partners on how they can advance sustainable energy applications and also provides clients with best practices for reducing barriers to innovation and market transformation.
Logarithmic transformation of response Logarithmic transformation of response
Komarek, Arnost
Logarithmic transformation of response Logarithmic transformation of response Often, support S of Y is S = (0, ). Logarithm is then one of transformations to consider when trying to obtain a correct (wrong. Model Building 1. Transformation of response #12;Logarithmic transformation of response When does
Program Transformation Mechanics A Classification of Mechanisms for Program Transformation
Utrecht, Universiteit
Program Transformation Mechanics A Classification of Mechanisms for Program Transformation with a Survey of Existing Transformation Systems Jonne van Wijngaarden Eelco Visser UU-CS-2003-048 Institute Transformation Mechanics A Classification of Mechanisms for Program Transformation with a Survey of Existing
IMAGINED TRANSFORMATIONS 1 Running head: IMAGINED TRANSFORMATION OF BODIES
Zacks, Jeffrey M.
IMAGINED TRANSFORMATIONS 1 Running head: IMAGINED TRANSFORMATION OF BODIES Imagined Transformations TRANSFORMATIONS 2 Abstract A number of spatial reasoning problems can be solved by performing an imagined transformation of one's egocentric perspective. A series of experiments were carried out to characterize
The Hyperanalytic Wavelet Transform
S. C. Olhede; G. Metikas
2006-05-23T23:59:59.000Z
In this paper novel classes of 2-D vector-valued spatial domain wavelets are defined, and their properties given. The wavelets are 2-D generalizations of 1-D analytic wavelets, developed from the Generalized Cauchy-Riemann equations and represented as quaternionic functions. Higher dimensionality complicates the issue of analyticity, more than one `analytic' extension of a real function is possible, and an `analytic' analysis wavelet will not necessarily construct `analytic' decomposition coefficients. The decomposition of locally unidirectional and/or separable variation is investigated in detail, and two distinct families of hyperanalytic wavelet coefficients are introduced, the monogenic and the hypercomplex wavelet coefficients. The recasting of the analysis in a different frame of reference and its effect on the constructed coefficients is investigated, important issues for sampled transform coefficients. The magnitudes of the coefficients are shown to exhibit stability with respect to shifts in phase. Hyperanalytic 2-D wavelet coefficients enable the retrieval of a phase-and-magnitude description of an image in phase space, similarly to the description of a 1-D signal with the use of 1-D analytic wavelets, especially appropriate for oscillatory signals. Existing 2-D directional wavelet decompositions are related to the newly developed framework, and new classes of mother wavelets are introduced.
A discrete fractional random transform
Zhengjun Liu; Haifa Zhao; Shutian Liu
2006-05-20T23:59:59.000Z
We propose a discrete fractional random transform based on a generalization of the discrete fractional Fourier transform with an intrinsic randomness. Such discrete fractional random transform inheres excellent mathematical properties of the fractional Fourier transform along with some fantastic features of its own. As a primary application, the discrete fractional random transform has been used for image encryption and decryption.
Lorentz transformation by mimicking the Lorentz transformation
Bernhard Rothenstein; Stefan Popescu
2007-09-24T23:59:59.000Z
We show that starting with the fact that special relativity theory is concerned with a distortion of the observed length of a moving rod, without mentioning if it is a "contraction" or "dilation", we can derive the Lorentz transformations for the spacetime coordinates of the same event. This derivation is based on expressing the length of the moving rod as a sum of components with all the lengths involved in this summation being measured by the observers of the same inertial reference frame.
Applying Improved Efficiency Transformers
Haggerty, N. K.; Malone, T. P.
primary and secondary windings, and vary significantly with transformer loading. Load or conductor losses vary with the square of the per unit load. Average full load losses of a 1500 kVA transformer can range from 11 to 21 kW. Manufacturers can... to meet the requirements of a particular transformer specification. These designs will have varying amounts of core steel and copper or aluminum conductors with differing no-load and load losses. The lowest cost design that meets all the applicable...
Transforming California's Freight Transport System
California at Davis, University of
Transforming California's Freight Transport System Policy Forum on the Role of Freight Transport Standard #12;2050 Vision- Key Conceptual Outcomes Technology Transformation Early Action Cleaner Combustion Multiple Strategies Federal Action Efficiency Gains Energy Transformation 9 #12;Further reduce localized
J. Twamley; G. J. Milburn
2007-02-12T23:59:59.000Z
We uncover a new type of unitary operation for quantum mechanics on the half-line which yields a transformation to ``Hyperbolic phase space''. We show that this new unitary change of basis from the position x on the half line to the Hyperbolic momentum $p_\\eta$, transforms the wavefunction via a Mellin transform on to the critial line $s=1/2-ip_\\eta$. We utilise this new transform to find quantum wavefunctions whose Hyperbolic momentum representation approximate a class of higher transcendental functions, and in particular, approximate the Riemann Zeta function. We finally give possible physical realisations to perform an indirect measurement of the Hyperbolic momentum of a quantum system on the half-line.
Series Transmission Line Transformer
Buckles, Robert A. (Livermore, CA); Booth, Rex (Livermore, CA); Yen, Boris T. (El Cerrito, CA)
2004-06-29T23:59:59.000Z
A series transmission line transformer is set forth which includes two or more of impedance matched sets of at least two transmissions lines such as shielded cables, connected in parallel at one end ans series at the other in a cascading fashion. The cables are wound about a magnetic core. The series transmission line transformer (STLT) which can provide for higher impedance ratios and bandwidths, which is scalable, and which is of simpler design and construction.
J. LaChapelle
2015-01-07T23:59:59.000Z
Functional integrals are defined in terms of locally compact topological groups and their associated Banach-valued Haar integrals. This approach generalizes the functional integral scheme of Cartier and DeWitt-Morette. The definition allows a construction of functional Mellin transforms. In turn, the functional Mellin transforms can be used to define functional traces, logarithms, and determinants. The associated functional integrals are useful tools for probing function spaces in general and $C^\\ast$-algebras in particular. Several interesting aspects are explored.
Optical transformation from chirplet to fractional Fourier transformation kernel
Hong-yi Fan; Li-yun Hu
2009-02-11T23:59:59.000Z
We find a new integration transformation which can convert a chirplet function to fractional Fourier transformation kernel, this new transformation is invertible and obeys Parseval theorem. Under this transformation a new relationship between a phase space function and its Weyl-Wigner quantum correspondence operator is revealed.
From transformation traces to transformation rules: Assisting Model Driven Engineering
Paris-Sud XI, Université de
From transformation traces to transformation rules: Assisting Model Driven Engineering approach. In this paper we are interested in semi-automatically gen- erating labelled graph (model) transformations conform to a particu- lar syntax (meta-model). Those transformations are basic operations in model driven
Laplace Transforms An integral transform is an operator
Ikenaga, Bruce
9281998 Laplace Transforms An integral transform is an operator F (s) = Z b a K(s; t)f(t) dt: The input to the transform is the function f(t); the output is the function F (s). (By convention, small letters denote the inputs to a transform, and the corresponding capital letters denote the corresponding
APPENDIX F. TRANSFORMS, COMPLEX ANALYSIS 1 Transforms, Complex
Callen, James D.
APPENDIX F. TRANSFORMS, COMPLEX ANALYSIS 1 Appendix F Transforms, Complex Analysis This appendix discusses Fourier and Laplace transforms as they are used in plasma physics and this book. Also, key properties of complex variable theory that are needed for understanding and inverting these transforms
Generalization of Conformal Transformations
G. I. Garas'ko
2005-09-19T23:59:59.000Z
Conformal transformations of a Euclidean (complex) plane have some kind of completeness (sufficiency) for the solution of many mathematical and physical-mathematical problems formulated on this plane. There is no such completeness in the case of Euclidean, pseudo-Euclidean and polynumber spaces of dimension greater than two. In the present paper we show that using the concepts of analogical geometries allows us to generalize conformal transformations not only to the case of Euclidean or pseudo-Euclidean spaces, but also to the case of Finsler spaces, analogous to the spaces of affine connectedness. Examples of such transformations in the case of complex and hypercomplex numbers H_4 are presented. In the general case such transformations form a group of transitions, the elements of which can be viewed as transitions between projective Euclidean geometries of a distinguished class fixed by the choice of metric geometry admitting affine coordinates. The correlation between functions realizing generalized conformal transformations and generalized analytical functions can appear to be productive for the solution of fundamental problems in theoretical and mathematical physics.
Discrete Fourier Transform Javier Montoya
Giger, Christine
Discrete Fourier Transform Javier Montoya Photogrammetry and Remote Sensing ETH Zurich March 16, 2012 1 Introduction The Discrete form of the Fourier transform is known as Discrete Fourier Transform domain using the Inverse Discrete Fourier Transform (IDFT): f(x) = 1 N N-1 x=0 F(u)ej 2 N ux for u = 0, 1
Coordinate transformations in quaternion spaces
Zihua Weng
2009-05-15T23:59:59.000Z
The quaternion spaces can be used to describe the property of electromagnetic field and gravitational field. In the quaternion space, some coordinate transformations can be deduced from the feature of quaternions, including Lorentz transformation and Galilean transformation etc., when the coordinate system is transformed into others. And some coordinate transformations with variable speed of light can be obtained in the electromagnetic field and gravitational field.
Fourier Transform Infrared Spectroscopy
Nizkorodov, Sergey
FTIR - 1 Fourier Transform Infrared Spectroscopy FTIR DETERMINATION OF MTBE IN GASOLINE AND ETHANOL FTIR DETERMINATION OF MTBE IN GASOLINE AND ETHANOL IN VODKA AND MOUTHWASH INTRODUCTION As a part has contained MTBE (methyl tertÂbutyl ether) as its primary oxygenate. However, there has been
Transforming Education at Einstein
Yates, Andrew
Transforming Education at Einstein EinstEin Winter/spring 2012 The Magazine for Alumni and Friends of Albert Einstein College of Medicine of Yeshiva University #12;2 EinstEin : WintEr/spring 2012 Meet Our interactive Companion Magazine Give Einstein's "virtual" version a try! this interactive version
Research Councils UK Transforming
Berzins, M.
Research Councils UK Transforming our energy future #12;Research funded by the Research Councils in 2002 to create a viable renewable energy research community to foster industrial engagement of research, expertise and the business capability to develop and exploit them commercially. Energy and its
TO TRANSFORM BIOMEDICAL ENGINEERING
IT'S TIME TO TRANSFORM BIOMEDICAL ENGINEERING EDUCATION #12;Charles H. & Bettye Barclay Professor Head, Department of Biomedical Engineering Texas A&M University We're dedicated to solving the world in biomedical engineering research and education and we're well on our way. Our faculty continues to engineer
Algorithms for transform selection in multiple-transform video compression
Cai, Xun, S.M. Massachusetts Institute of Technology
2012-01-01T23:59:59.000Z
Selecting proper transforms for video compression has been based on the rate-distortion criterion. Transforms that appear reasonable are incorporated into a video coding system and their performance is evaluated. This ...
Transformer Recharging with Alpha Channeling in Tokamaks
N.J. Fisch
2009-12-21T23:59:59.000Z
Transformer recharging with lower hybrid waves in tokamaks can give low average auxiliary power if the resistivity is kept high enough during the radio frequency (rf) recharging stage. At the same time, operation in the hot ion mode via alpha channeling increases the effective fusion reactivity. This paper will address the extent to which these two large cost saving steps are compatible. __________________________________________________
FOURIER TRANSFORM MULTIPLE QUANTUM NMR
Drobny, G.
2011-01-01T23:59:59.000Z
of transition observed in Fourier transform multiple quantumDecember 18-19, 1979 FOURIER TRANSFORM MULTIPLE QUANTUM NMRof London, December 1978. FOURIER TRANSFO~~ MULTIPLE QUANTUM
Uranium transformations in static microcosms.
Kelly, S. D.; Wu, W.; Yang, F.; Criddle, C.; Marsh, T. L.; O'Loughlin, E. J.; Ravel, B.; Watson, D.; Jardine, P. M.; Kemner, K. M.; Stanford Univ.; Michigan State Univ.; ORNL; BNL; EXAFS Analysis
2010-01-01T23:59:59.000Z
Elucidation of complex biogeochemical processes and their effects on speciation of U in the subsurface is critical for developing remediation strategies with an understanding of stability. We have developed static microcosms that are similar to bioreduction process studies in situ under laminar flow conditions or in sediment pores. Uranium L{sub 3}-edge X-ray absorption near-edge spectroscopy analysis with depth in the microcosms indicated that transformation of U{sup VI} to U{sup IV} occurred by at least two distinct processes. Extended X-ray absorption fine structure (EXAFS) analysis indicated that initial U{sup VI} species associated with C- and P-containing ligands were transformed to U{sup IV} in the form of uraninite and U associated with Fe-bound ligands. Microbial community analysis identified putative Fe{sup III} and sulfate reducers at two different depths in the microcosms. The slow reduction of U{sup VI} to U{sup IV} may contribute the stability of U{sup IV} within microcosms at 11 months after a decrease in bioreducing conditions due to limited electron donors.
Reuther, Sebastian; Metzke, Elisabeth [Laboratory of Radiobiology and Experimental Radiooncology, University Hospital Hamburg-Eppendorf, Hamburg (Germany)] [Laboratory of Radiobiology and Experimental Radiooncology, University Hospital Hamburg-Eppendorf, Hamburg (Germany); Bonin, Michael [Department of Medical Genetics, University of Tuebingen (Germany)] [Department of Medical Genetics, University of Tuebingen (Germany); Petersen, Cordula [Clinic of Radiotherapy and Radiooncology, University Hospital Hamburg-Eppendorf, Hamburg (Germany)] [Clinic of Radiotherapy and Radiooncology, University Hospital Hamburg-Eppendorf, Hamburg (Germany); Dikomey, Ekkehard, E-mail: dikomey@uke.de [Laboratory of Radiobiology and Experimental Radiooncology, University Hospital Hamburg-Eppendorf, Hamburg (Germany)] [Laboratory of Radiobiology and Experimental Radiooncology, University Hospital Hamburg-Eppendorf, Hamburg (Germany); Raabe, Annette [Laboratory of Radiobiology and Experimental Radiooncology, University Hospital Hamburg-Eppendorf, Hamburg (Germany)] [Laboratory of Radiobiology and Experimental Radiooncology, University Hospital Hamburg-Eppendorf, Hamburg (Germany)
2013-02-01T23:59:59.000Z
Purpose: To study whether the promoter polymorphism (C-509T) affects transforming growth factor {beta}1 gene (TGFB1) expression, protein secretion, and/or cellular radiosensitivity for both human lymphocytes and fibroblasts. Methods and Materials: Experiments were performed with lymphocytes taken either from 124 breast cancer patients or 59 pairs of normal monozygotic twins. We used 15 normal human primary fibroblast strains as controls. The C-509T genotype was determined by polymerase chain reaction-restriction fragment length polymorphism or TaqMan single nucleotide polymorphism (SNP) genotyping assay. The cellular radiosensitivity of lymphocytes was measured by G0/1 assay and that of fibroblasts by colony assay. The amount of extracellular TGFB1 protein was determined by enzyme-linked immunosorbent assay, and TGFB1 expression was assessed via microarray analysis or reverse transcription-polymerase chain reaction. Results: The C-509T genotype was found not to be associated with cellular radiosensitivity, neither for lymphocytes (breast cancer patients, P=.811; healthy donors, P=.181) nor for fibroblasts (P=.589). Both TGFB1 expression and TGFB1 protein secretion showed considerable variation, which, however, did not depend on the C-509T genotype (protein secretion: P=.879; gene expression: lymphocytes, P=.134, fibroblasts, P=.605). There was also no general correlation between TGFB1 expression and cellular radiosensitivity (lymphocytes, P=.632; fibroblasts, P=.573). Conclusion: Our data indicate that any association between the SNP C-509T of TGFB1 and risk of normal tissue toxicity cannot be ascribed to a functional consequence of this SNP, either on the level of gene expression, protein secretion, or cellular radiosensitivity.
Automated Verification of Model Transformations in the Automotive Industry
Cordy, James R.
Automated Verification of Model Transformations in the Automotive Industry Gehan M. K. Selim1] transformation developed for the automotive industry [29]. More specifically, we check the correctness reported on such industrial expe- riences by discussing the effects of MDD and the issues that still need
Generalized Transforms and Special Functions
G. Dattoli; E. Sabia
2010-10-08T23:59:59.000Z
We study the properties of different type of transforms by means of operational methods and discuss the relevant interplay with many families of special functions. We consider in particular the binomial transform and its generalizations. A general method, based on the use of the Fourier transform technique, is proposed for the study of the properties of functions of operators.
Planar LTCC transformers for high voltage flyback converters.
Schofield, Daryl (NASCENT Technology Inc. , Watertown, SD); Schare, Joshua M.; Glass, Sarah Jill; Roesler, Alexander William; Ewsuk, Kevin Gregory; Slama, George (NASCENT Technology Inc. , Watertown, SD); Abel, Dave (NASCENT Technology Inc. , Watertown, SD)
2007-06-01T23:59:59.000Z
This paper discusses the design and use of low-temperature (850 C to 950 C) co-fired ceramic (LTCC) planar magnetic flyback transformers for applications that require conversion of a low voltage to high voltage (> 100V) with significant volumetric constraints. Measured performance and modeling results for multiple designs showed that the LTCC flyback transformer design and construction imposes serious limitations on the achievable coupling and significantly impacts the transformer performance and output voltage. This paper discusses the impact of various design factors that can provide improved performance by increasing transformer coupling and output voltage. The experiments performed on prototype units demonstrated LTCC transformer designs capable of greater than 2 kV output. Finally, the work investigated the effect of the LTCC microstructure on transformer insulation. Although this paper focuses on generating voltages in the kV range, the experimental characterization and discussion presented in this work applies to designs requiring lower voltage.
autotransformers: Topics by E-print Network
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
Experience, IEE Collo A Practical Approach to the Protection Hoffmann, Rolf 4 Power transformers - Part 11: Dry-type transformers CERN Preprints Summary: Applies to dry-type power...
Zheng, Yufeng
Ni43Co7Mn39Sn11 alloy fabricated by spark plasma sintering (SPS) [3]. In NiMnSn, NiMnGa and Ni by spark plasma sintering [3]. The g phase usually deteriorates shape memory effect due to its impediment
Market Transformation Fact Sheet
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page onYouTube YouTube Note: Since the.pdfBreaking ofOil & GasTechnical Publications Â» Market Analysis Transformation
Transforming Commercial Building Operations
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn'tOriginEducationVideoStrategic|IndustrialCenter Gets People Work,Amy Hollander: I'dTransforming
Transforming PV Installations toward Dispatchable, Schedulable...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
Transforming PV Installations toward Dispatchable, Schedulable Energy Solutions Transforming PV Installations toward Dispatchable, Schedulable Energy Solutions Advanced Energy...
LU transformation invariant operators and LU transformation invariant
Xin-wei Zha; Chun-min Zhang
2007-02-06T23:59:59.000Z
We proposed a concept of LU transformation invariant operators. By using this operator, arbitrary multi-qubit states LU transformation invariant and SLOCC invariant could be easily obtained. And we find that presences two kinds of invariant operators and corresponding invariants. One kind of operators yields LU invariants and the other operators results in SLOCC invariants. For three-qubit states, all independence LU transformation invariant are obtained. Furthermore, by this system method, arbitrary multi-qubit states invariants can be given.
S. Dong; P. Alvarez; N. Paterson; D.R. Dugwell; R. Kandiyoti [Imperial College London, London (United Kingdom). Department of Chemical Engineering
2009-03-15T23:59:59.000Z
Differences in the development of carbon structures between coal chars and metallurgical cokes during high-temperature reactions have been investigated using Raman spectroscopy. These are important to differentiate between different types of carbons in dust recovered from the top gas of the blast furnace. Coal chars have been prepared from a typical injectant coal under different heat-treatment conditions. These chars reflected the effect of peak temperature, residence time at peak temperature, heating rate and pressure on the evolution of their carbon structures. The independent effect of gasification on the development of the carbon structure of a representative coal char has also been studied. A similar investigation has also been carried out to study the effect of heat-treatment temperature (from 1300 to 2000{sup o}C) and gasification on the carbon structure of a typical metallurgical coke. Two Raman spectral parameters, the intensity ratio of the D band to the G band (I{sub D}/I{sub G}) and the intensity ratio of the valley between D and G bands to the G band (I{sub V}/I{sub G}), have been found useful in assessing changes in carbon structure. An increase in I{sub D}/I{sub G} indicates the growth of basic graphene structural units across the temperature range studied. A decrease in I{sub V}/I{sub G} appears to suggest the elimination of amorphous carbonaceous materials and ordering of the overall carbon structure. The Raman spectral differences observed between coal chars and metallurgical cokes are considered to result from the difference in the time-temperature history between the raw injectant coal and the metallurgical coke and may lay the basis for differentiation between metallurgical coke fines and coal char residues present in the dust carried over the top of the blast furnace. 41 refs., 17 figs., 3 tabs.
Fourier transform and related integral transforms in superspace
Hendrik De Bie
2008-05-13T23:59:59.000Z
In this paper extensions of the classical Fourier, fractional Fourier and Radon transforms to superspace are studied. Previously, a Fourier transform in superspace was already studied, but with a different kernel. In this work, the fermionic part of the Fourier kernel has a natural symplectic structure, derived using a Clifford analysis approach. Several basic properties of these three transforms are studied. Using suitable generalizations of the Hermite polynomials to superspace (see [H. De Bie, F. Sommen, Hermite and Gegenbauer polynomials in superspace using Clifford analysis, J. Phys. A 40 (2007) 10441-10456]) an eigenfunction basis for the Fourier transform is constructed.
z Transform Chapter Intended Learning Outcomes
So, Hing-Cheung
z Transform Chapter Intended Learning Outcomes: (i) Understanding the relationship between transform and the Fourier transform for discrete-time signals (ii) Understanding the characteristics and properties of transform (iii) Ability to compute transform and inverse transform (iv) Ability to apply
Transformational Manufacturing | Argonne National Laboratory
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
about 12 million people and generates another 7 million jobs in related businesses. Argonne is working with industry to develop innovative and transformational technology to...
Cloaking a sensor via transformation optics
Allan Greenleaf; Yaroslav Kurylev; Matti Lassas; Gunther Uhlmann
2010-11-14T23:59:59.000Z
It is generally believed that transformation optics based cloaking, besides rendering the cloaked region invisible to detection by scattering of incident waves, also shields the region from those same waves. We demonstrate a coupling between the cloaked and uncloaked regions, exposing a difference between cloaking for rays and waves. Interior resonances allow this coupling to be amplified, and careful choice of parameters leads to effective cloaks with degraded shielding. As one application, we describe how to use transformation optics to hide sensors in the cloaked region and yet enable the sensors to efficiently measure waves incident on the exterior of the cloak, an effect similar to the plasmon based approach of Alu' and Engheta.
Transformation Nets -A Runtime Model for Transformation Languages
Hochreiter, Sepp
as first-class arti- facts throughout the software lifecycle requiring the availability of proper of Software Technology and Interactive Systems Vienna University of Technology Favoritenstraße 9)--called Transformation Nets--for the development, execution and debugging of model transformations on a high level
Inversion of the star transform
Fan Zhao; John C. Schotland; Vadim A. Markel
2014-05-06T23:59:59.000Z
We define the star transform as a generalization of the broken ray transform introduced by us in previous work. The advantages of using the star transform include the possibility to reconstruct the absorption and the scattering coefficients of the medium separately and simultaneously (from the same data) and the possibility to utilize scattered radiation which, in the case of the conventional X-ray tomography, is discarded. In this paper, we derive the star transform from physical principles, discuss its mathematical properties and analyze numerical stability of inversion. In particular, it is shown that stable inversion of the star transform can be obtained only for configurations involving odd number of rays. Several computationally-efficient inversion algorithms are derived and tested numerically.
Li, L.
2009-01-01T23:59:59.000Z
iron(III) oxyhydroxides: effects of mineral solubility andMineral Transformation and Biomass Accumulation Associatedthe accumulation of new mineral phases and biomass. Word
Bulloch, Daryl Neil
2013-01-01T23:59:59.000Z
and biological treatments for wastewater decontamination- Atreatment involves biological degradation of organic wastewaterBiological effects of transformation products. The extent of attenuation of PPCPs through wastewater treatment
Formal Transformations and WSL Martin Ward
Singer, Jeremy
Formal Transformations and WSL Part Two Martin Ward STRL Senior Research Fellow Royal Society of Transformations #12;Types of Transformations A Syntactic Transformation changes the syntax of the program but preserves the exact sequence of operations carried out by the program. Many restructuring transformations
Transformer Efficiency Assessment - Okinawa, Japan
Thomas L. Baldwin; Robert J. Turk; Kurt S. Myers; Jake P. Gentle; Jason W. Bush
2012-05-01T23:59:59.000Z
The US Army Engineering & Support Center, Huntsville (USAESCH), and the US Marine Corps Base (MCB), Okinawa, Japan retained Idaho National Laboratory (INL) to conduct a Transformer Efficiency Assessment of “key” transformers located at multiple military bases in Okinawa, Japan. The purpose of this assessment is to support the Marine Corps Base, Okinawa in evaluating medium voltage distribution transformers for potential efficiency upgrades. The original scope of work included the MCB providing actual transformer nameplate data, manufacturer’s factory test sheets, electrical system data (kWh), demand data (kWd), power factor data, and electricity cost data. Unfortunately, the MCB’s actual data is not available and therefore making it necessary to de-scope the original assessment. Note: Any similar nameplate data, photos of similar transformer nameplates, and basic electrical details from one-line drawings (provided by MCB) are not a replacement for actual load loss test data. It is recommended that load measurements are performed on the high and low sides of transformers to better quantify actual load losses, demand data, and power factor data. We also recommend that actual data, when available, be inserted by MCB Okinawa where assumptions have been made and then the LCC analysis updated. This report covers a generalized assessment of modern U.S. transformers in a three level efficiency category, Low-Level efficiency, Medium-Level efficiency, and High-Level efficiency.
Transformer Efficiency Assessment - Okinawa, Japan
Thomas L. Baldwin; Robert J. Turk; Kurt S. Myers; Jake P. Gentle; Jason W. Bush
2012-08-01T23:59:59.000Z
The US Army Engineering & Support Center, Huntsville (USAESCH), and the US Marine Corps Base (MCB), Okinawa, Japan retained Idaho National Laboratory (INL) to conduct a Transformer Efficiency Assessment of “key” transformers located at multiple military bases in Okinawa, Japan. The purpose of this assessment is to support the Marine Corps Base, Okinawa in evaluating medium voltage distribution transformers for potential efficiency upgrades. The original scope of work included the MCB providing actual transformer nameplate data, manufacturer’s factory test sheets, electrical system data (kWh), demand data (kWd), power factor data, and electricity cost data. Unfortunately, the MCB’s actual data is not available and therefore making it necessary to de-scope the original assessment. Note: Any similar nameplate data, photos of similar transformer nameplates, and basic electrical details from one-line drawings (provided by MCB) are not a replacement for actual load loss test data. It is recommended that load measurements are performed on the high and low sides of transformers to better quantify actual load losses, demand data, and power factor data. We also recommend that actual data, when available, be inserted by MCB Okinawa where assumptions have been made and then the LCC analysis updated. This report covers a generalized assessment of modern U.S. transformers in a three level efficiency category, Low-Level efficiency, Medium-Level efficiency, and High-Level efficiency.
DNA UPTAKE BY TRANSFORMABLE BACTERIA
LACKS,S.A.
1999-09-07T23:59:59.000Z
The various processes of DNA uptake by cells can be categorized as: viral DNA entry, conjugation, or transformation. Within each category, a variety of mechanisms have been found. However, considerable similarities occur among the different mechanisms of conjugation and, especially, transformation. All of these natural mechanisms of DNA transfer are quite elaborate and involve multiple protein components, as the case may be, of the virus, the donor cell, and the recipient cell. The mechanisms of viral infection and conjugation will be discussed mainly with respect to their relevance to transformation.
SAR image formation with azimuth interpolation after azimuth transform
Doerry; Armin W. (Albuquerque, NM), Martin; Grant D. (Marlborough, MA), Holzrichter; Michael W. (Albuquerque, NM)
2008-07-08T23:59:59.000Z
Two-dimensional SAR data can be processed into a rectangular grid format by subjecting the SAR data to a Fourier transform operation, and thereafter to a corresponding interpolation operation. Because the interpolation operation follows the Fourier transform operation, the interpolation operation can be simplified, and the effect of interpolation errors can be diminished. This provides for the possibility of both reducing the re-grid processing time, and improving the image quality.
TRANSFORMING ACADEMIA Historical Developments, Contemporary Perspectives and
Li, Mo
ISyE 8803A TRANSFORMING ACADEMIA Historical Developments, Contemporary Perspectives independence and this organizational structure represent the first major transformation of academia. These characteristics of academia have persisted for over 900 years and seem immutable. Yet, notable transformations
Transforms for the Motion Compensation Residual
Kamisli, Fatih
The Discrete-Cosine-Transform (DCT) is the most widely used transform in image and video compression. Its use in image compression is often justified by the notion that it is the statistically optimal transform for first-order ...
HIGH-TECH BUILDINGS MARKET TRANSFORMATION PROJECT
LBNL-49112 HT-457 HIGH-TECH BUILDINGS MARKET TRANSFORMATION PROJECT Cleanroom Energy Benchmarking High-Performance Fume Hood Demonstration/Test Market Transformation Activities FINAL REPORT ........................................................................................3 Market Transformation Activities
Chinese Passives: Transformational or Lexical?
Zhang, Jiuwu; Wen, Xiaohong
1989-01-01T23:59:59.000Z
There are two types of passive constructions in Chinese. Type I is a syntactic passive since it is derived through a transformational rule. Type II is a lexical passive. It has certain properties in common with the predicate ...
Presidential address Geomycology: biogeochemical transformations
Ahmad, Sajjad
Corresponding Editor: David L. Hawksworth Keywords: Carbonates Clay minerals Environmental biotechnology Lichens of the fungal transformations discussed have beneficial applications in environmental biotechnology, e and radionuclides by fungi, bioweathering and bioremediation Geoffrey M. GADD* Division of Environmental and Applied
Reservoir characterization using wavelet transforms
Rivera Vega, Nestor
2004-09-30T23:59:59.000Z
Automated detection of geological boundaries and determination of cyclic events controlling deposition can facilitate stratigraphic analysis and reservoir characterization. This study applies the wavelet transformation, a recent advance in signal...
Physical transformations between quantum states
Zejun Huang; Chi-Kwong Li; Edward Poon; Nung-Sing Sze
2012-10-26T23:59:59.000Z
Given two sets of quantum states {A_1, ..., A_k} and {B_1, ..., B_k}, represented as sets of density matrices, necessary and sufficient conditions are obtained for the existence of a physical transformation T, represented as a trace-preserving completely positive map, such that T(A_i) = B_i for i = 1, ..., k. General completely positive maps without the trace-preserving requirement, and unital completely positive maps transforming the states are also considered.
Coupled diffusional/displacive transformations
Mujahid, Shafiq Ahmad
), TRIP steels (transformation in- duced plasticity), ausforming steels (plastically deformed austenite prior to quenching) and dual phase steels (a mixture of ferrite + martensite obtained by quenching from the 1+ Q' field). a c b d Figure 1... Supersaturated Ferrite Plates 137 v Abstract The displacive transformation of austenite to ferrite in steels containing both substitutional and interstitial elements has been studied. The aim was to establish the conditions under which plates of the product phase...
Market Transformation: Fuel Cell Early Adoption (Presentation...
Office of Environmental Management (EM)
Transformation: Fuel Cell Early Adoption (Presentation) Market Transformation: Fuel Cell Early Adoption (Presentation) Presented at the DOE Fuel Cell Pre-Solicitation Workshop held...
National Electric Delivery Technologies Roadmap: Transforming...
Office of Environmental Management (EM)
Delivery Technologies Roadmap: Transforming the Grid to Revolutionize Electric Power in North America National Electric Delivery Technologies Roadmap: Transforming the Grid to...
Metamaterial flexible sheets could transform optics
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
Metamaterial flexible sheets could transform optics Metamaterial flexible sheets could transform optics Advances would boost security screening systems, infrared thermal cameras,...
Building America Expert Meeting: Transforming Existing Buildings...
Transforming Existing Buildings through New Media--An Idea Exchange Building America Expert Meeting: Transforming Existing Buildings through New Media--An Idea Exchange This report...
Investigation of Mineral Transformations in Wet Supercritical...
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
Mineral Transformations in Wet Supercritical CO2 by Electron Microscopy. Investigation of Mineral Transformations in Wet Supercritical CO2 by Electron Microscopy. Abstract: The...
The Industrial Transformation of Subarctic Canada
Mathoor, Vineeth
2011-01-01T23:59:59.000Z
in the subarctic region of Canada. The role of scientificTransformation of Subarctic Canada By Liza Piper Reviewed byTransformation of Subarctic Canada. Vancouver, BC: UBC
Energy Department Finalizes Loan Guarantee for Transformational...
Office of Environmental Management (EM)
Transformational Rooftop Solar Project Energy Department Finalizes Loan Guarantee for Transformational Rooftop Solar Project September 30, 2011 - 3:37pm Addthis Washington D.C. -...
Structure and Transformation of Amorphous Calcium Carbonate:...
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
Transformation of Amorphous Calcium Carbonate: A Solid-State 43Ca NMR and Computational Molecular Dynamics Structure and Transformation of Amorphous Calcium Carbonate: A...
Ecology Action: Small Market Advanced Retrofit Transformation...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
Ecology Action: Small Market Advanced Retrofit Transformation Program - 2015 Peer Review Ecology Action: Small Market Advanced Retrofit Transformation Program - 2015 Peer Review...
A new perspective on renormalization: the scattering transformation
Michael E. Glinsky
2014-06-28T23:59:59.000Z
The scattering transformation developed by Mallat is put into the perspective of field theory. It is shown to be a simultaneous transformation of the field and the "time" parameter explicitly used in the definition of path integrals central to the Lagrangian approach and in the definition of the "time" ordered products used in the Hamiltonian (or canonical) approach. This transformation preserves the form of the S-matrix as "time" ordered products. The transformed "time" coordinate is the inverse "time" scale. This is traditionally the UV cutoff or renormalization parameter in standard approaches to renormalization. The critical calculation will be the determination of the form of the effective action in this transformed coordinate system. This action will now be expressed as an integral of a Lagrangian density that is a function of the renormalization parameter or transformed "time". Other symmetries of the action can be explicitly built into the transformation. It will be demonstrated on a simple 1D $\\phi^4$ field theory. This non-perturbative approach has great potential in possibly being used to renormalize quantum gravity and obtaining expressions for the strongly coupled limit of QCD.
Error analysis of the chirp-z transform when implemented using waveform synthesizers and FFTs
Bielek, T.P.
1990-11-01T23:59:59.000Z
This report analyzes the effects of finite-precision arithmetic on discrete Fourier transforms (DFTs) calculated using the chirp-z transform algorithm. An introduction to the chirp-z transform is given together with a description of how the chirp-z transform is implemented in hardware. Equations for the effects of chirp rate errors, starting frequency errors, and starting phase errors on the frequency spectrum of the chirp-z transform are derived. Finally, the maximum possible errors in the chirp rate, the starting frequencies, and starting phases are calculated and used to compute the worst case effects on the amplitude and phase spectrums of the chirp-z transform. 1 ref., 6 figs.
Cataldo, D.A.; Van Voris, P.; Ligotke, M.W.; Fellows, R.J.; McVeety, B.D.; Li, Shu-mei W.; Bolton, H. Jr.; Fredrickson, J.K.
1989-01-01T23:59:59.000Z
The terrestrial transport, chemical fate, and ecological effects of fog oil (FO) smoke obscurants were evaluated under controlled wind tunnel conditions. The primary objectives of this research program are to characterize and assess the impacts of smoke and obscurants on: (1) natural vegetation characteristic of US Army training sites in the United States; (2) physical and chemical properties of soils representative of these training sites; and (3) soil microbiological and invertebrate communities. Impacts and dose/responses were evaluated based on an exposure scenario, including exposure duration, exposure rate, and sequential cumulative dosing. Key to understanding the environmental impacts of fog oil smoke/obscurants is establishing the importance of environmental parameters, such as relative humidity and wind speed on airborne aerosol characteristics and deposition to receptor surfaces. Direct and indirect biotic effects were evaluated using five plant species and three soil types. 29 refs., 35 figs., 32 tabs.
Continuous Cooling Transformation (CCT) Assistant Professor
Cambridge, University of
Continuous Cooling Transformation (CCT) Diagrams R. Manna Assistant Professor Centre of Advanced.ac.uk #12;Continuous cooling transformation (CCT) diagram There are two types of CCT diagrams I) Plot and transformation finish temperature against transformation time on each cooling curve II) Plot of (for each type
Aging of safety class 1E transformers in safety systems of nuclear power plants
Roberts, E.W.; Edson, J.L.; Udy, A.C. [Lockheed Idaho Technologies Co., Idaho Falls, ID (United States)
1996-02-01T23:59:59.000Z
This report discusses aging effects on safety-related power transformers in nuclear power plants. It also evaluates maintenance, testing, and monitoring practices with respect to their effectiveness in detecting and mitigating the effects of aging. The study follows the US Nuclear Regulatory Commission`s (NRC`s) Nuclear Plant-Aging Research approach. It investigates the materials used in transformer construction, identifies stressors and aging mechanisms, presents operating and testing experience with aging effects, analyzes transformer failure events reported in various databases, and evaluates maintenance practices. Databases maintained by the nuclear industry were analyzed to evaluate the effects of aging on the operation of nuclear power plants.
Polyanalytic relativistic second Bargmann transforms
Zouhair Mouayn
2015-04-01T23:59:59.000Z
We construct coherent states through special superpositions of photon number states of the relativistic isotonic oscillator. In each superposition the coefficients are chosen to be L 2 eingenfunctions of a sigma weight Maass Laplacian on the Poincare disk, which are associated with discrete eigenvalues. For each nonzero m the associated coherent states transform constitutes the m true polyanalytic extension of a relativistic version of the second Bargmann transform, whose integral kernel is expressed in terms of a special Appel Kampe de Feriet hypergeometric function. The obtained results could be used to extend the known semi classical analysis of quantum dynamics of the relativistic isotonic oscillator.
Fourier transforms of UD integrals
Igor Kondrashuk; Anatoly Kotikov
2008-02-23T23:59:59.000Z
UD integrals published by N. Usyukina and A. Davydychev in 1992-1993 are integrals corresponding to ladder-type Feynman diagrams. The results are UD functions $\\Phi^{(L)},$ where $L$ is the number of loops. They play an important role in N=4 supersymmetic Yang-Mills theory. The integrals were defined and calculated in the momentum space. In this paper the position space representation of UD functions is investigated. We show that Fourier transforms of UD functions are UD functions of space-time intervals but this correspondence is indirect. For example, the Fourier transform of the second UD integral is the second UD integral.
Fermi coordinates and modified Franklin transformation : A comparative study on rotational phenomena
M. Nouri-Zonoz; H. Ramezani-Aval
2014-12-18T23:59:59.000Z
Employing a relativistic rotational transformation to study and analyze rotational phenomena, instead of the rotational transformations based on consecutive Lorentz transformations and Fermi coordinates, leads to different predictions. In this article, after a comparative study between Fermi metric of a uniformly rotating eccentric observer and the spacetime metric in the same observer's frame obtained through the modified Franklin transformation, we consider rotational phenomena including transverse Doppler effect and Sagnac effect in both formalisms and compare their predictions. We also discuss length measurements in the two formalisms.
Gogolla, Martin - Fachbereich 3
Model Transformations? Transformation Models! Jean Bezivin (A) , Fabian BË?uttner (B) , Martin of the current work on model transformations seems essentially operational and executable in nature. Executable, transformations can also be viewed as descriptive models by stating only the properties a transformation has
ENGI 2422 Laplace Transforms Page 5-01 5.01 Transforms
George, Glyn
ENGI 2422 Laplace Transforms Page 5-01 5.01 Transforms In some situations, a difficult problem can be transformed into an easier problem, whose solution can be transformed back into the solution of the original problem. For example, an integrating factor can sometimes be found to transform a non-exact first order
Al-Khattaf, Sulaiman
1,2,4-Trimethylbenzene Transformation Reaction Compared with its Transalkylation Reaction. This shows that toluene would rather accept a methyl group to transform to xylene than lose a methyl group for transformation of TMB. Cejka et al.3 studied the effect of the structure of large-pore zeolites of beta, Y, L
Induced geometry from disformal transformation
Fang-Fang Yuan; Peng Huang
2015-02-08T23:59:59.000Z
In this note, we use the disformal transformation to induce a geometry from the manifold which is originally Riemannian. The new geometry obtained here can be considered as a generalization of Weyl integrable geometry. Based on these results, we further propose a geometry which is naturally a generalization of Weyl geometry.
Transformer Abdullah Al-Otaibi
Masoudi, Husain M.
: they are used for three-phase supplies. 3. Leakage transformers: also called a stray-field, there are used. By cooling type: air cooled, oil filled, fan cooled, or water cooled. 5. By application function: such as power supply, impedance matching, output voltage and current stabilizer, or circuit isolation. 6. By end
PHASE TRANSFORMATIONSPHASE TRANSFORMATIONS Nucleation & Growth
Subramaniam, Anandh
;Energies involved Bulk Gibbs free energy Interfacial energy Strain energy Important in solid to solid at constant T & P), (ii) increase in (interface free-energy), (iii) increase in strain energy. In a liquid). Volume of transformed material New interface created #12;Energies involved Bulk Gibbs free energy
Some Special Fourier Transform Pairs
Vickers, James
Some Special Fourier Transform Pairs 24.3 Introduction ' & $ % Prerequisites Before starting to . . . #12;1. Parseval's Theorem Recall from Unit 2 on Fourier Series that for a periodic signal fT (t) with complex Fourier coefficients cn(n = 0, Â±1, Â±2, . . .) Parseval's Theorem holds: 1 T + T 2 - T 2 f2 T (t
Phase Transformations in Cast Duplex Stainless Steels
Yoon-Jun Kim
2004-12-19T23:59:59.000Z
Duplex stainless steels (DSS) constitute both ferrite and austenite as a matrix. Such a microstructure confers a high corrosion resistance with favorable mechanical properties. However, intermetallic phases such as {sigma} and {chi} can also form during casting or high-temperature processing and can degrade the properties of the DSS. This research was initiated to develop time-temperature-transformation (TTT) and continuous-cooling-transformation (CCT) diagrams of two types of cast duplex stainless steels, CD3MN (Fe-22Cr-5Ni-Mo-N) and CD3MWCuN (Fe-25Cr-7Ni-Mo-W-Cu-N), in order to understand the time and temperature ranges for intermetallic phase formation. The alloys were heat treated isothermally or under controlled cooling conditions and then characterized using conventional metallographic methods that included tint etching, and also using electron microscopy (SEM, TEM) and wavelength dispersive spectroscopy (WDS). The kinetics of intermetallic-phase ({sigma} + {chi}) formation were analyzed using the Johnson-Mehl-Avrami (MA) equation in the case of isothermal transformations and a modified form of this equation in the case of continuous cooling transformations. The rate of intermetallic-phase formation was found to be much faster in CD3MWCuN than CD3MN due mainly to differences in the major alloying contents such as Cr, Ni and Mo. To examine in more detail the effects of these elements of the phase stabilities; a series of eight steel castings was designed with the Cr, Ni and Mo contents systematically varied with respect to the nominal composition of CD3MN. The effects of varying the contents of alloying additions on the formation of intermetallic phases were also studied computationally using the commercial thermodynamic software package, Thermo-Calc. In general, {sigma} was stabilized with increasing Cr addition and {chi} by increasing Mo addition. However, a delicate balance among Ni and other minor elements such as N and Si also exists. Phase equilibria in DSS can be affected by local composition fluctuations in the cast alloy. This may cause discrepancy between thermodynamic prediction and experimental observation.
The X-ray transfrom and the Radon transform
The Euclidean Doppler Transform. 31. 8. ...... an integration that has a smoothing effect. ..... F(|x|) is a radial function of x for |x| > A and integrals over any plane at ..... of sound is c = const., and if that the velocity field f of the fluid is much smaller.
Nonlinear transform coding with lossless polar coordinates
Ba, Demba Elimane
2006-01-01T23:59:59.000Z
In conventional transform coding, the importance of preserving desirable quantization partition cell shapes prevents one from considering the use of a nonlinear change of variables. If no linear transformation of a given ...
Transforms for prediction residuals in video coding
Kam??l?, Fatih
2010-01-01T23:59:59.000Z
Typically the same transform, the 2-D Discrete Cosine Transform (DCT), is used to compress both image intensities in image coding and prediction residuals in video coding. Major prediction residuals include the motion ...
Harmonic Wavelet Transform and Image Approximation
Zhang, Zhihua; Saito, Naoki
2010-01-01T23:59:59.000Z
DOI 10.1007/s10851-010-0202-x Harmonic Wavelet Transform andwe approximate f by a harmonic function u such that thebanks. We call this the Harmonic Wavelet Transform (HWT).
Tunable fractional-order Fourier transformer
Malyutin, A A [A.M. Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation)
2006-01-31T23:59:59.000Z
A fractional two-dimensional Fourier transformer whose orders are tuned by means of optical quadrupoles is described. It is shown that in the optical scheme considered, the Fourier-transform order a element of [0,1] in one of the mutually orthogonal planes corresponds to the transform order (2-a) in another plane, i.e., to inversion and inverse Fourier transform of the order a. (laser modes and beams)
High voltage transformers. (Latest citations from the Inspec database). NewSearch
Not Available
1994-11-01T23:59:59.000Z
The bibliography contains citations concerning materials and performance of insulators used for high voltage transformers. Topics examine use of mica-fibers, gases, mica filled epoxies, and ceramics. Effects of insulation aging are reviewed, and acceptance testing of high voltage power transformers and apparatus is also examined. (Contains a minimum of 104 citations and includes a subject term index and title list.)
Melnik, Roderick
Modeling the essential atomistic influence in the phase transformation dynamics of shape memory of multivariant phase transformation in shape memory alloy has been developed. This paper is focused on linking Shape memory effects in alloys are observed due to the existence of large differences in the variants
The TRANSFORMATION OF CONFLICTS AMONG ETHIOPIAN PASTORALISTS
Richner, Heinz
The TRANSFORMATION OF CONFLICTS AMONG ETHIOPIAN PASTORALISTS: Ethnography of the Notion of Conflict This PhD thesis is concerned with studying the conceptualization, performance and transformation in their nature and have not yet achieved full transformation to peace. The research supports the notion
Ribaucour transformations revisited Armando V. Corro
Tenenblat, Keti
Ribaucour transformations revisited Armando V. Corro Keti Tenenblat Abstract We present a revised definition of a Ribaucour transformation for submanifolds of space forms, with flat normal bundle, motivated- cise treatment of the geometric aspect of such transformations preserving lines of curvature and it can
YANGMILLS THEORY AND THE SEGALBARGMANN TRANSFORM
YANGMILLS THEORY AND THE SEGALBARGMANN TRANSFORM BRIAN C. HALL Abstract. Motivated by the results cylinder, with the goal of obtaining an appropriate SegalBargmann transform. Using a Gaussian mea sure a variant of the classical SegalBargmann transform. A simple but nonrigorous argument shows
LAPPED TRANSFORMS Ricardo L. de Queiroz
de Queiroz, Ricardo L.
LAPPED TRANSFORMS Ricardo L. de Queiroz Advanced Color Imaging Xerox Corporation queiroz@wrc.xerox.com 0.1 Introduction The idea of a lapped transform (LT, for short) maintaining orthogonality and non with the blocking artifacts so common in traditional block transform coding of images. The idea was to extend
Transforming and Refining Abstract Constraint Specifications
Walsh, Toby
Transforming and Refining Abstract Constraint Specifications Alan M. Frisch1 , Brahim Hnich2 , Ian choose model transformations to reduce greatly the amount of effort that is required to solve a problem by systematic search. It is a consid- erable challenge to automate such transformations. A problem may be viewed
AALBORGUNIVERSITY DEPARTMENTOFENERGY TECHNOLOGY Transformer in series
Silva, Filipe Faria Da
AALBORGUNIVERSITY DEPARTMENTOFENERGY TECHNOLOGY Transformer in series Filipe Miguel Faria Da that corresponds to a neighbour transformer. Both loads are 3-phase loads, which can be unbalanced to generated. The harmonics are generated inside the farm, thus, the current source is grounded at the transformer's neutral
Simulation of Top Oil Temperature for Transformers
Simulation of Top Oil Temperature for Transformers Masters Thesis and Final Project Report Power-Oil Temperature for Transformers Thesis and Final Report Yong Liang PSERC Publication 01-21 February 2001 #12 for the PSERC project "On-Line Peak Loading of Substation Distribution Transformers Through Accurate Temperature
WAVELET TRANSFORMATIONS AS DIVERSITY ENHANCERS 1
West, Mike
WAVELET TRANSFORMATIONS AS DIVERSITY ENHANCERS 1 By Prem Goel Ohio State University and Duke University and Brani Vidakovic Duke University Discrete wavelet transformations have became indispensable of wavelet transformations and propose novel thresholding and wavelet selection methods. This is achieved via
Interpolating Wavelet Transforms David L. Donoho
Donoho, David
Interpolating Wavelet Transforms David L. Donoho Department of Statistics Stanford University October, 1992 Abstract We describe several \\wavelet transforms" which characterize smoothness spaces-interpret the empirical wavelet transform, i.e. the common practice of applying pyramid #12;lters to samples of a function
RECENTER -ADVERSITY INTO TRANSFORMATION Course Description
Coles, William A.
Center" delivers power tools and real time strategies for creating performance transformation no matter what and practical system for transforming your communication skills from the inside and outside. · Use real timeRECENTER - ADVERSITY INTO TRANSFORMATION Course Description: Knowing how to use adversity
Quantum arithmetic with the Quantum Fourier Transform
Lidia Ruiz-Perez; Juan Carlos Garcia-Escartin
2014-11-21T23:59:59.000Z
The Quantum Fourier Transform offers an interesting way to perform arithmetic operations on a quantum computer. We review existing Quantum Fourier Transform adders and multipliers and propose some modifications that extend their capabilities. Among the new circuits, we propose a quantum method to compute the weighted average of a series of inputs in the transform domain.
Birefringent Fourier-transform imaging spectrometer
Harvey, Andy
Birefringent Fourier-transform imaging spectrometer Andrew Robert Harvey and David William Fletcher.r.Harvey@hw.ac.uk http://www.ece.eps.hw.ac.uk/~arharvey Abstract: Fourier-transform imaging spectrometers offer important, for application in harsh environments, deployment of Fourier-transform instruments based on traditional moving
The Fourier Transform -A Primer Hagit Shatkay
Learned, John
The Fourier Transform - A Primer Hagit Shatkay Department of Computer Science Brown University Providence, Rhode Island 02912 CS-95-37 November 1995 #12;#12;The Fourier Transform { A Primer Hagit Shatkay Department of Computer Science Brown University Providence, RI 02912 1 Introduction The Fourier transform
Lecture 2: Fourier transforms and frequency response
Fan, Xingzhe
Lecture 2: Fourier transforms and frequency response Course at a glance Discrete-time signals and systems Fourier-domain representation DFT/FFT System structures Filter structures Filter design Filter z-transform Sampling and reconstruction System analysis System Fourier transforms and frequency response Frequency
Fourier transform channeled spectropolarimetry in the MWIR
Dereniak, Eustace L.
Fourier transform channeled spectropolarimetry in the MWIR Michael W. Kudenov,1 Nathan A. Hagen, 1 Abstract: A complete Fourier Transform Spectropolarimeter in the MWIR is demonstrated. The channeled and links 1. P. Griffiths and J. D. Haseth, "Fourier Transform Infrared Spectrometry," (John Wiley & Sons
A programmable Fresnel transform pulse shaper
Purdue University
A programmable Fresnel transform pulse shaper G. M´inguez-Vega1, J.D. McKinney2 and A.M. Weiner2 1@purdue.edu Abstract: We demonstrate the first reprogrammable Fresnel transform pulse shaper based on a modified direct a free-space Fresnel transform which causes quadratic dispersion of the output temporal waveform. When
On Lorentz Transformations in Symplectic Deformations
Cuesta, R.; Sabido, M. [Departamento de Fisica, DCI-Campus Leon, Universidad de Guanajuato, A.P. E-143, C.P. 37150, Guanajuato (Mexico); Guzman, W. [Instituto de Fisica, Universidade Federal do Rio de Janeiro, Caixa Postal 68528, 21945-970, Rio de Janeiro (Brazil)
2010-07-12T23:59:59.000Z
In this paper we study noncommutative Lorentz transformations using symplectic deformations. In this framework we define an infinitesimal line element that is invariant under this noncommutative Lorentz transformations. Using the symplectic geometry formalism, we find that noncommutative Lorentz transformations intertwine the canonical momentums with canonical position coordinates.
Dynamic Black Holes in a FRW background: Lemaitre transformations
H. Moradpour; A. Dehghani; M. T. Mohammadi Sabet
2015-04-28T23:59:59.000Z
Since the conformal transformations of metric do not change its causal structure, we use these transformations to embed the Lemaitre metrics into the FRW background. In our approach, conformal transformation is in agreement with the universe expansion regimes. Indeed, we use the Lemaitre metrics because the horizon singularity is eliminated in these metrics. For our solutions, there is an event horizon while its physical radii is increasing as a function of the universe expansion provided suitable metrics for investigating the effects of the universe expansion on the Black Holes. In addition, the physical and mathematical properties of the introduced metrics have well-defined behavior on the event horizon. Moreover, some physical and mathematical properties of the introduced metrics have been addressed.
A Superconducting transformer system for high current cable testing
Godeke, A.
2010-01-01T23:59:59.000Z
A Superconducting Transformer System for High Current CableDC) superconducting transformer system for the high currentsuperconducting cables. The transformer consists of a core-
active transforming growth: Topics by E-print Network
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
Solid State Transformer Engineering Websites Summary: converters as distribution transformers 1. A power electronics-based solid state transformer (SST) providesAc-Ac Dual...
A Superconducting transformer system for high current cable testing
Godeke, A.
2010-01-01T23:59:59.000Z
A Superconducting Transformer System for High Current Cablea Direct-Current (DC) superconducting transformer system forhigh current test of superconducting cables. The transformer
Towards Sustainable Communities: Transitions and Transformations in Environmental Policy
Ghosh, Kaustuv
2010-01-01T23:59:59.000Z
Transformations in Environmental Policy Daniel A. MazmanianTransformations in Environmental Policy (2 ed). Cambridge,Transformation in Environmental Policy is the second edition
Cauchy transforms of measures viewed as some functionals of Fourier transforms #
Jurek, Zbigniew J.
Cauchy transforms of measures viewed as some functionals of Fourier transforms # Zbigniew J. Jurek Urbanik ABSTRACT. The Cauchy transform of a positive measure plays an impor tant role in complex analysis and more recently in socalled free probability. We show here that the Cauchy transform restricted
Cauchy transforms of measures viewed as some functionals of Fourier transforms
Jurek, Zbigniew J.
Cauchy transforms of measures viewed as some functionals of Fourier transforms Zbigniew J. Jurek Urbanik ABSTRACT. The Cauchy transform of a positive measure plays an impor- tant role in complex analysis and more recently in so-called free probability. We show here that the Cauchy transform restricted
Paris-Sud XI, Université de
Learning transformation rules from transformation examples: An approach based on Relational Concept), model transformations are basic and primordial entities, thus easing their design and implementation is an important issue. A quite recently proposed way to create model transformations consists in deducing
Phase transformation and growth of hygroscopic aerosols
Tang, I.N.
1999-11-01T23:59:59.000Z
Ambient aerosols play an important role in many atmospheric processes affecting air quality, visibility degradation, and climatic changes as well. Both natural and anthropogenic sources contribute to the formation of ambient aerosols, which are composed mostly of sulfates, nitrates, and chlorides in either pure or mixed forms. These inorganic salt aerosols are hygroscopic by nature and exhibit the properties of deliquescence and efflorescence in humid air. For pure inorganic salt particles with diameter larger than 0.1 micron, the phase transformation from a solid particle to a saline droplet occurs only when the relative humidity in the surrounding atmosphere reaches a certain critical level corresponding to the water activity of the saturated solution. The droplet size or mass in equilibrium with relative humidity can be calculated in a straightforward manner from thermodynamic considerations. For aqueous droplets 0.1 micron or smaller, the surface curvature effect on vapor pressure becomes important and the Kelvin equation must be used.
Microbial Transformations of Actinides and Other Radionuclides
Francis,A.J.; Dodge, C. J.
2009-01-07T23:59:59.000Z
Microorganisms can affect the stability and mobility of the actinides and other radionuclides released from nuclear fuel cycle and from nuclear fuel reprocessing plants. Under appropriate conditions, microorganisms can alter the chemical speciation, solubility and sorption properties and thus could increase or decrease the concentrations of radionuclides in solution in the environment and the bioavailability. Dissolution or immobilization of radionuclides is brought about by direct enzymatic action or indirect non-enzymatic action of microorganisms. Although the physical, chemical, and geochemical processes affecting dissolution, precipitation, and mobilization of radionuclides have been extensively investigated, we have only limited information on the effects of microbial processes and biochemical mechanisms which affect the stability and mobility of radionuclides. The mechanisms of microbial transformations of the major and minor actinides U, Pu, Cm, Am, Np, the fission products and other radionuclides such as Ra, Tc, I, Cs, Sr, under aerobic and anaerobic conditions in the presence of electron donors and acceptors are reviewed.
Transformation Optics with Photonic Band Gap Media
Urzhumov, Yaroslav A
2010-01-01T23:59:59.000Z
We introduce a class of optical media based on adiabatically modulated, dielectric-only, and potentially extremely low-loss, photonic crystals. The media we describe represent a generalization of the eikonal limit of transformation optics (TO). The foundation of the concept is the possibility to fit frequency isosurfaces in the k-space of photonic crystals with elliptic surfaces, allowing them to mimic the dispersion relation of light in anisotropic effective media. Photonic crystal cloaks and other TO devices operating at visible wavelengths can be constructed from optically transparent substances like glasses, whose attenuation coefficient can be as small as 10 dB/km, suggesting the TO design methodology can be applied to the development of optical devices not limited by the losses inherent to metal-based, passive metamaterials.
Computing Instantaneous Frequency by normalizing Hilbert Transform
Huang, Norden E.
2005-05-31T23:59:59.000Z
This invention presents Normalized Amplitude Hilbert Transform (NAHT) and Normalized Hilbert Transform(NHT), both of which are new methods for computing Instantaneous Frequency. This method is designed specifically to circumvent the limitation set by the Bedorsian and Nuttal Theorems, and to provide a sharp local measure of error when the quadrature and the Hilbert Transform do not agree. Motivation for this method is that straightforward application of the Hilbert Transform followed by taking the derivative of the phase-angle as the Instantaneous Frequency (IF) leads to a common mistake made up to this date. In order to make the Hilbert Transform method work, the data has to obey certain restrictions.
Preventive overhaul time for power transformers
Sarmadi, M. [Pennsylvania State Univ., University Park, PA (United States). Electrical Engineering Dept.; Rouhi, J. [Univ. of Mazandaran (Iran, Islamic Republic of); Fayyaz, A. [Mazandaran Power Co. (Iran, Islamic Republic of)
1999-11-01T23:59:59.000Z
Power transformers are the major piece of equipment in high-voltage substations. A considerable number of these transformers exist in Iran`s integrated network. Due to the climate diversity and improper usage, many of these transformers age rapidly, suffer failure and are taken out of service before half their useful life. At the present time the utility companies have no specific time-frame and plan for preventive overhaul. Detection of preventive overhaul time will increase the remaining life of transformers and improve the reliability of substations. An exact check of the remaining lifetime of transformers is not yet possible by available diagnostic techniques. In this paper, the authors present a method of identifying the right time for preventive overhaul in 63 kV power transformers. This method is developed based on 25 year transformer performance records in Northern Iran (subtropical climate) and with the utilization of studies done by electrical engineering communities world-wide.
High flux solar energy transformation
Winston, Roland (Chicago, IL); Gleckman, Philip L. (Chicago, IL); O'Gallagher, Joseph J. (Flossmoor, IL)
1991-04-09T23:59:59.000Z
Disclosed are multi-stage systems for high flux transformation of solar energy allowing for uniform solar intensification by a factor of 60,000 suns or more. Preferred systems employ a focusing mirror as a primary concentrative device and a non-imaging concentrator as a secondary concentrative device with concentrative capacities of primary and secondary stages selected to provide for net solar flux intensification of greater than 2000 over 95 percent of the concentration area. Systems of the invention are readily applied as energy sources for laser pumping and in other photothermal energy utilization processes.
High flux solar energy transformation
Winston, R.; Gleckman, P.L.; O'Gallagher, J.J.
1991-04-09T23:59:59.000Z
Disclosed are multi-stage systems for high flux transformation of solar energy allowing for uniform solar intensification by a factor of 60,000 suns or more. Preferred systems employ a focusing mirror as a primary concentrative device and a non-imaging concentrator as a secondary concentrative device with concentrative capacities of primary and secondary stages selected to provide for net solar flux intensification of greater than 2000 over 95 percent of the concentration area. Systems of the invention are readily applied as energy sources for laser pumping and in other photothermal energy utilization processes. 7 figures.
Fourier Transform Quantum State Tomography
Mohammadreza Mohammadi; Agata M. Branczyk; Daniel F. V. James
2013-01-17T23:59:59.000Z
We propose a technique for performing quantum state tomography of photonic polarization-encoded multi-qubit states. Our method uses a single rotating wave plate, a polarizing beam splitter and two photon-counting detectors per photon mode. As the wave plate rotates, the photon counters measure a pseudo-continuous signal which is then Fourier transformed. The density matrix of the state is reconstructed using the relationship between the Fourier coefficients of the signal and the Stokes' parameters that represent the state. The experimental complexity, i.e. different wave plate rotation frequencies, scales linearly with the number of qubits.
Ultrafast Transformations in Superionic Nanocrystals
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del SolStrengthening aTurbulence may bedieselsummerFactTransformations in Superionic
A Transformational View of Cartography W. R. Tobler
Clarke, Keith
A Transformational View of Cartography W. R. Tobler ABSTRACT. Cartographic transformations aliases are between points, lines, and areas. Substantive transformations occur in map interpolation transformational grammars, as originally devised for linguistics.2, 4 A similar, though less ambitious, attempt
Transformation induced plasticity assisted steels: stress or strain affected martensitic
Cambridge, University of
Transformation induced plasticity assisted steels: stress or strain affected martensitic transformation? S. Chatterjee and H. K. D. H. Bhadeshia* Transformation induced plasticity (TRIP) assisted steels contain a small quantity of carbon enriched retained austenite, which transforms into martensite during
LOCAL FOURIER TRANSFORMS AND RIGIDITY FOR D-MODULES
Bloch, Spencer
LOCAL FOURIER TRANSFORMS AND RIGIDITY FOR D. Local Fourier transforms, analogous to the `-adic local Fourier transforms [14], are constructed infinitesimal rigidity condition is satisfied. As in [12], the argument uses local Fourier transforms
The Mineralogic Transformation of Ferrihydrite Induced by Heterogeneou...
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Transformation of Ferrihydrite Induced by Heterogeneous Reaction with Bioreduced Anthraquinone Disulfonate (AQDS The Mineralogic Transformation of Ferrihydrite Induced by...
NEMA Distribution Transformers, CCE Overview and Update presentation...
Broader source: Energy.gov (indexed) [DOE]
Distribution Transformers, CCE Overview and Update presentation, dated 05242011 NEMA Distribution Transformers, CCE Overview and Update presentation, dated 05242011 This...
NoVaS Transformations: Flexible Inference for Volatility Forecasting
Politis, Dimitris N; Thomakos, Dimitrios D
2008-01-01T23:59:59.000Z
NoVaS Transformations: Flexible Inference for VolatilityNoVaS Transformations: Flexible Inference for Volatility
Gregg, Patricia Michelle Marie
2008-01-01T23:59:59.000Z
Segmentation and crustal accretion at oceanic transform fault systems are investigated through a combination of geophysical data analysis and geodynamical and geochemical modeling. Chapter 1 examines the effect of fault ...
In situ TEM observation of two-step martensitic transformation in aged NiTi shape memory alloy
Crone, Wendy C.
In situ TEM observation of two-step martensitic transformation in aged NiTi shape memory alloy L transformation; Ageing; TEM; DSC 1. Introduction Shape memory effect, first discovered in binary alloys of Cu [2]. In addition to the shape memory effect giving the material the ability to return
Barnes, P.R.; Van Dyke, J.W.; McConnell, B.W.; Cohn, S.M.; Purucker, S.L.
1995-04-01T23:59:59.000Z
It is estimated that electric utilities use about 40 million distribution transformers in supplying electricity to customers in the United States. Although utility distribution transformers collectively have a high average efficiency, they account for approximately 61 billion kWh of the 229 billion kWh of energy lost annually in the delivery of electricity. Distribution transformers are being replaced over time by new, more efficient, lower-loss units during routine utility maintenance of power distribution systems. Maintenance is typically not performed on units in service. However, units removed from service with appreciable remaining life are often refurbished and returned to stock. Distribution transformers may be removed from service for many reasons, including failure, over- or underloading, or line upgrades such as voltage changes or rerouting. When distribution transformers are removed from service, a decision must be made whether to dispose of the transformer and purchase a lower-loss replacement or to refurbish the transformer and return it to stock for future use. This report contains findings and recommendations on replacing utility distribution transformers during routine maintenance, which is required by section 124(c) of the Energy Policy Act of 1992. The objectives of the study are to evaluate the practicability, cost-effectiveness, and potential energy savings of replacing or upgrading existing transformers during routine utility maintenance and to develop recommendations on was to achieve the potential energy savings.
The Fourier Transform on Quantum Euclidean Space
Kevin Coulembier
2011-05-11T23:59:59.000Z
We study Fourier theory on quantum Euclidean space. A modified version of the general definition of the Fourier transform on a quantum space is used and its inverse is constructed. The Fourier transforms can be defined by their Bochner's relations and a new type of q-Hankel transforms using the first and second q-Bessel functions. The behavior of the Fourier transforms with respect to partial derivatives and multiplication with variables is studied. The Fourier transform acts between the two representation spaces for the harmonic oscillator on quantum Euclidean space. By using this property it is possible to define a Fourier transform on the entire Hilbert space of the harmonic oscillator, which is its own inverse and satisfies the Parseval theorem.
Nonlinear Transformation Group of CAR Fermion Algebra
Mitsuo Abe; Katsunori Kawamura
2001-10-01T23:59:59.000Z
Based on our previous work on the recursive fermion system in the Cuntz algebra, it is shown that a nonlinear transformation group of the CAR fermion algebra is induced from a $U(2^p)$ action on the Cuntz algebra ${\\cal O}_{2^p}$ with an arbitrary positive integer $p$. In general, these nonlinear transformations are expressed in terms of finite polynomials in generators. Some Bogoliubov transformations are involved as special cases.
Non-Hermitian Hamiltonians and similarity transformations
Francisco M. Fernández
2015-03-06T23:59:59.000Z
We show that similarity (or equivalent) transformations enable one to construct non-Hermitian operators with real spectrum. In this way we can also prove and generalize the results obtained by other authors by means of a gauge-like transformation and its generalization. Such similarity transformations also reveal the connection with pseudo-Hermiticity in a simple and straightforward way. In addition to it we consider the positive and negative eigenvalues of a three-parameter non-Hermitian oscillator.
Monitoring the health of power transformers
Kirtley, J.L. Jr.; Hagman, W.H.; Lesieutre, B.C.; Boyd, M.J.; Warren, E.P.; Chou, H.P.; Tabors, R.D. [Massachusetts Inst. of Tech., Cambridge, MA (United States). Lab. for Electromagnetic and Electronic Systems] [Massachusetts Inst. of Tech., Cambridge, MA (United States). Lab. for Electromagnetic and Electronic Systems
1996-01-01T23:59:59.000Z
This article reviews MIT`s model-based system which offers adaptive, intelligent surveillance of transformers, and summons attention to anomalous operation through paging devices. Failures of large power transformers are problematic for four reasons. Generally, large transformers are situated so that failures present operational problems to the system. In addition, large power transformers are encased in tanks of flammable and environmentally hazardous fluid. Failures are often accompanied by fire and/or spillage of this fluid. This presents hazards to people, other equipment and property, and the local environment. Finally, large power transformers are costly devices. There is a clear incentive for utilities to keep track of the health of their power transformers. Massachusetts Institute of Technology (MIT) has developed an adaptive, intelligent, monitoring system for large power transformers. Four large transformers on the Boston Edison system are under continuous surveillance by this system, which can summon attention to anomalous operation through paging devices. The monitoring system offers two advantages over more traditional (not adaptive) methods of tracking transformer operation.
An index 2F2 hypergeometric transform
Zouhair Mouayn
2011-05-12T23:59:59.000Z
We construct a new one-parameter family of index hypergeometric transforms associated with the relativistic pseudoharmonic oscillator by using coherent states analysis.
Sandia National Laboratories: Transformational Solutions for...
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U.S. water supply and demand and explored potential "transformational" solutions from the perspectives of technology and policy (or both) and discussed ... Last Updated: October...
Transformers: The Levers and Gears of Electricity
Broader source: Energy.gov [DOE]
This video is a great resource for teachers, demonstrating how transformers work. It includes experiments and demos that can be shared with students.
Displacements and Transformations in Caribbean Cultures
Maurer, Bill
2010-01-01T23:59:59.000Z
and Transformations in Caribbean Cultures. LIZABETHdefine a "global Caribbean" (p. 3) characterized bythe authors consider the Caribbean as a problematic more
agrobacterium tumefaciens-mediated transformation: Topics by...
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
that allows to specify binary relations on graphs Drewes, Frank 51 Constructors transformers Computer Technologies and Information Sciences Websites Summary: Proc. AGTIVE'99,...
Mineralogical transformations controlling acid mine drainage...
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
Chemical extractions, X-ray diffraction (XRD), scanning electron microscopy (SEM), and Fourier transform infrared spectroscopy (FTIR) were used to identify and characterize Fe(III)...
Calculating Plutonium and Praseodymium Structural Transformations...
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Calculating Plutonium and Praseodymium Structural Transformations A newly-developed hybrid computational method has computed, for the first time, plutonium's exotic crystal...
Emission angle distribution and flavor transformation of supernova neutrinos
Wei Liao
2009-06-28T23:59:59.000Z
Using moment equations we analyze collective flavor transformation of supernova neutrinos. We study the convergence of moment equations and find that numerical results using a few moment converge quite fast. We study effects of emission angle distribution of neutrinos on neutrino sphere. We study scaling law of the amplitude of neutrino self-interaction Hamiltonian and find that it depends on model of emission angle distribution of neutrinos. Dependence of neutrino oscillation on different models of emission angle distribution is studied.
Atomic Structure and Phase Transformations in Pu Alloys
Schwartz, A J; Cynn, H; Blobaum, K M; Wall, M A; Moore, K T; Evans, W J; Farber, D L; Jeffries, J R; Massalski, T B
2008-04-28T23:59:59.000Z
Plutonium and plutonium-based alloys containing Al or Ga exhibit numerous phases with crystal structures ranging from simple monoclinic to face-centered cubic. Only recently, however, has there been increased convergence in the actinides community on the details of the equilibrium form of the phase diagrams. Practically speaking, while the phase diagrams that represent the stability of the fcc {delta}-phase field at room temperature are generally applicable, it is also recognized that Pu and its alloys are never truly in thermodynamic equilibrium because of self-irradiation effects, primarily from the alpha decay of Pu isotopes. This article covers past and current research on several properties of Pu and Pu-(Al or Ga) alloys and their connections to the crystal structure and the microstructure. We review the consequences of radioactive decay, the recent advances in understanding the electronic structure, the current research on phase transformations and their relations to phase diagrams and phase stability, the nature of the isothermal martensitic {delta} {yields} {alpha}{prime} transformation, and the pressure-induced transformations in the {delta}-phase alloys. New data are also presented on the structures and phase transformations observed in these materials following the application of pressure, including the formation of transition phases.
Linear Transformations In this Chapter, we will define the notion of a linear transformation between
Carrell, Jim
Chapter 6 Linear Transformations In this Chapter, we will define the notion of a linear transformation between two vector spaces V and W which are defined over the same field and prove the most basic transformations is equivalent to matrix theory. We will also study the geometric properties of linear
ZAKKAROFF et al.: STACK ALIGNMENT TRANSFORM 1 Stack Alignment Transform for Misalignment
Magee, Derek
alignment transform which parametrises the in-plane movement for all slices independently of each otherZAKKAROFF et al.: STACK ALIGNMENT TRANSFORM 1 Stack Alignment Transform for Misalignment Correction- nesses associated with slice-to-volume registration. The core of the presented method is a custom stack
The Xi-transform for conformally flat space-time
George Sparling
2006-12-01T23:59:59.000Z
The Xi-transform is a new spinor transform arising naturally in Einstein's general relativity. Here the example of conformally flat space-time is discussed in detail. In particular it is shown that for this case, the transform coincides with two other naturally defined transforms: one a two-variable transform on the Lie group SU(2, C), the other a transform on the space of null split octaves. The key properties of the transform are developed.
Power Transformer Application for Wind Plant Substations
Behnke, M. R. [IEEE PES Wind Plant Collector System Design Working Group; Bloethe, W.G. [IEEE PES Wind Plant Collector System Design Working Group; Bradt, M. [IEEE PES Wind Plant Collector System Design Working Group; Brooks, C. [IEEE PES Wind Plant Collector System Design Working Group; Camm, E H [IEEE PES Wind Plant Collector System Design Working Group; Dilling, W. [IEEE PES Wind Plant Collector System Design Working Group; Goltz, B. [IEEE PES Wind Plant Collector System Design Working Group; Li, J. [IEEE PES Wind Plant Collector System Design Working Group; Niemira, J. [IEEE PES Wind Plant Collector System Design Working Group; Nuckles, K. [IEEE PES Wind Plant Collector System Design Working Group; Patino, J. [IEEE PES Wind Plant Collector System Design Working Group; Reza, M [IEEE PES Wind Plant Collector System Design Working Group; Richardson, B. [IEEE PES Wind Plant Collector System Design Working Group; Samaan, N. [IEEE PES Wind Plant Collector System Design Working Group; Schoene, Jens [IEEE PES Wind Plant Collector System Design Working Group; Smith, Travis M [ORNL; Snyder, Isabelle B [ORNL; Starke, Michael R [ORNL; Walling, R. [IEEE PES Wind Plant Collector System Design Working Group; Zahalka, G. [IEEE PES Wind Plant Collector System Design Working Group
2010-01-01T23:59:59.000Z
Wind power plants use power transformers to step plant output from the medium voltage of the collector system to the HV or EHV transmission system voltage. This paper discusses the application of these transformers with regard to the selection of winding configuration, MVA rating, impedance, loss evaluation, on-load tapchanger requirements, and redundancy.
Point transformations in invariant difference schemes
Francis Valiquette
2005-07-17T23:59:59.000Z
In this paper, we show that when two systems of differential equations admitting a symmetry group are related by a point transformation it is always possible to generate invariant schemes, one for each system, that are also related by the same transformation. This result is used to easily obtain new invariant schemes of some differential equations.
Transformation of structured documents Eila Kuikka
Waterloo, University of
Transformation of structured documents Eila Kuikka Department of Computer Science, University Structure de nitions of documents have been used successfully for inputting and for- matting in text documents and studies possibilities to extend the use of structure de nitions to document transformations
A broadband transformation-optics metasurface lens
Wan, Xiang; Xiang Jiang, Wei; Feng Ma, Hui; Jun Cui, Tie, E-mail: tjcui@seu.edu.cn [State Key Laboratory of Millimeter Waves, School of Information Science and Engineering, Southeast University, Nanjing 210096 (China)
2014-04-14T23:59:59.000Z
We present a transformational metasurface Luneburg lens based on the quasi-conformal mapping method, which has weakly anisotropic constitutive parameters. We design the metasurface lens using inhomogeneous artificial structures to realize the required surface refractive indexes. The transformational metasurface Luneburg lens is fabricated and the measurement results demonstrate very good performance in controlling the radiated surface waves.
Fourier Transform, Riemann Surfaces and Indefinite Metric
Fominov, Yakov
Fourier Transform, Riemann Surfaces and Indefinite Metric P. G. Grinevich, S.P.Novikov Zakharov Park, College Park, USA #12;What is Fourier Transform in Riemann Surfaces? Which Problems need it? Discrete Analog of The Fourier/Laurent bases in Riemann Sur- faces was constructed by Krichever-Novikov (KN
Accelerating the transformation of power systems
Accelerating the transformation of power systems Ancillary Services Peer Exchange with India in power system transformation is an increasingly vital resource for national and subnational decision of power systems. The Power Partnership is a multilateral effort of the Clean Energy Ministerial and serves
Proof Transformations for Evolutionary Formal Software Development
Siekmann, JÃ¶rg H.
German Research Center for Arti#12;cial Intelligence (DFKI GmbH), Stuhlsatzenhausweg 3, 66123 Saarbr by applying several basic transformations in sequence. The result is a transformed speci#12;ca- tion with verifying the cor- rectness of program code with respect to a speci#12;cation, which was assumed to be given
High Transformer ratios in collinear wakefield accelerators.
Power, J. G.; Conde, M.; Yusof, Z.; Gai, W.; Jing, C.; Kanreykin, A.; Schoessow, P.; High Energy Physics; Euclid Techlabs, LLC
2008-01-01T23:59:59.000Z
Based on our previous experiment that successfully demonstrated wakefield transformer ratio enhancement in a 13.625 GHz dielectric-loaded collinear wakefield accelerator using the ramped bunch train technique, we present here a redesigned experimental scheme for even higher enhancement of the efficiency of this accelerator. Design of a collinear wakefield device with a transformer ratio R2, is presented. Using a ramped bunch train (RBT) rather than a single drive bunch, the enhanced transformer ratio (ETR) technique is able to increase the transformer ratio R above the ordinary limit of 2. To match the wavelength of the fundamental mode of the wakefield with the bunch length (sigmaz=2 mm) of the new Argonne wakefield accelerator (AWA) drive gun (where the experiment will be performed), a 26.625 GHz dielectric based accelerating structure is required. This transformer ratio enhancement technique based on our dielectric-loaded waveguide design will result in a compact, high efficiency accelerating structures for future wakefield accelerators.
Arbitrary Transform Telescopes: The Generalization of Interferometry
Lacki, Brian C
2015-01-01T23:59:59.000Z
The basic principle of astronomical interferometry is to derive the angular distribution of radiation in the sky from the Fourier transform of the electric field on the ground. What is so special about the Fourier transform? Nothing, it turns out. I consider the possibility of performing other transforms on the electric field with digital technology. The Fractional Fourier Transform (FrFT) is useful for interpreting observations of sources that are close to the interferometer (in the atmosphere for radio interferometers). Essentially, applying the FrFT focuses the array somewhere nearer than infinity. Combined with the other Linear Canonical Transforms, any homogeneous linear optical system with thin elements can be instantiated. The time variation of the electric field can also be decomposed into other bases besides the Fourier modes, which is especially useful for dispersed transients or quick pulses. I discuss why the Fourier basis is so commonly used, and suggest it is partly because most astrophysical so...
ContentsContents2424Fourier 1. The Fourier transform
Vickers, James
ContentsContents2424Fourier transforms 1. The Fourier transform 2. Properties of the Fourier Transform 3. Some Special Fourier Transform Pairs Learning outcomes needs doing Time allocation You mathematical topics this time may vary considerably. 1 #12;The Fourier Transform 24.1 Introduction
Transformations between symmetric sets of quantum states
Vedran Dunjko; Erika Andersson
2012-06-22T23:59:59.000Z
We investigate probabilistic transformations of quantum states from a `source' set to a `target' set of states. Such transforms have many applications. They can be used for tasks which include state-dependent cloning or quantum state discrimination, and as interfaces between systems whose information encodings are not related by a unitary transform, such as continuous-variable systems and finite-dimensional systems. In a probabilistic transform, information may be lost or leaked, and we explain the concepts of leak and redundancy. Following this, we show how the analysis of probabilistic transforms significantly simplifies for symmetric source and target sets of states. In particular, we give a simple linear program which solves the task of finding optimal transforms, and a method of characterizing the introduced leak and redundancy in information-theoretic terms. Using the developed techniques, we analyse a class of transforms which convert coherent states with information encoded in their relative phase to symmetric qubit states. Each of these sets of states on their own appears in many well studied quantum information protocols. Finally, we suggest an asymptotic realization based on quantum scissors.
Bioenergy in Energy Transformation and Climate Management
Rose, Steven K.; Kriegler, Elmar; Bibas, Ruben; Calvin, Katherine V.; Popp, Alexander; van Vuuren, Detlef; Weyant, John
2014-04-01T23:59:59.000Z
Unlike fossil fuels, biomass is a renewable resource that can sequester carbon during growth, be converted to energy, and then re-grown. Biomass is also a flexible fuel that can service many end-uses. This paper explores the importance of bioenergy to potential future energy transformation and climate change management. Using a model comparison of fifteen models, we characterize and analyze future dependence on, and the value of, bioenergy in achieving potential long-run climate objectives—reducing radiative forcing to 3.7 and 2.8 W/m2 in 2100 (approximately 550 and 450 ppm carbon dioxide equivalent atmospheric concentrations). Model scenarios project, by 2050, bioenergy growth of 2 to 10% per annum reaching 5 to 35 percent of global primary energy, and by 2100, bioenergy becoming 15 to 50 percent of global primary energy. Non-OECD regions are projected to be the dominant suppliers of biomass, as well as consumers, with up to 35 percent of regional electricity from biopower by 2050, and up to 70 percent of regional liquid fuels from biofuels by 2050. Bioenergy is found to be valuable to many models with significant implications for mitigation costs and world consumption. The availability of bioenergy, in particular biomass with carbon dioxide capture and storage (BECCS), notably affects the cost-effective global emissions trajectory for climate management by accommodating prolonged near-term use of fossil fuels. We also find that models cost-effectively trade-off land carbon and nitrous oxide emissions for the long-run climate change management benefits of bioenergy. Overall, further evaluation of the viability of global large-scale bioenergy is merited.
Transformations of $W$-Type Entangled States
S. K?nta?; S. Turgut
2010-03-10T23:59:59.000Z
The transformations of $W$-type entangled states by using local operations assisted with classical communication are investigated. For this purpose, a parametrization of the $W$-type states which remains invariant under local unitary transformations is proposed and a complete characterization of the local operations carried out by a single party is given. These are used for deriving the necessary and sufficient conditions for deterministic transformations. A convenient upper bound for the maximum probability of distillation of arbitrary target states is also found.
A Family of Circular Bargmann Transforms
Zouhair Mouayn
2011-05-24T23:59:59.000Z
When considering a charged particle evolving in the Poincar\\'e disk under influence of a uniform magnetic field with a strength proportional to +1, we construct for all hyperbolic Landau level \\epsilon^\\gamma_$m$ m = 4m(-m), m 2 Z+ \\[0, /2] a family of coherent states transforms labeled by (,m) and mapping isometrically square integrable functions on the unit circle with respect to the measure sin^\\gamma-2m (\\theta/2) d\\theta onto spaces of bound states of the particle. These transforms are called circular Bargmann transforms.
High voltage transformers. (Latest citations from the INSPEC database). Published Search
NONE
1996-02-01T23:59:59.000Z
The bibliography contains citations concerning materials and performance of insulators used for high voltage transformers. Topics examine use of mica-fibers, gases, mica filled epoxies, and ceramics. Effects of insulation aging are reviewed, and acceptance testing of high voltage power transformers and apparatus is also examined. (Contains 50-250 citations and includes a subject term index and title list.) (Copyright NERAC, Inc. 1995)
High voltage transformers. (Latest citations from the INSPEC database). Published Search
NONE
1997-05-01T23:59:59.000Z
The bibliography contains citations concerning materials and performance of insulators used for high voltage transformers. Topics examine use of mica-fibers, gases, mica filled epoxies, and ceramics. Effects of insulation aging are reviewed, and acceptance testing of high voltage power transformers and apparatus is also examined.(Contains 50-250 citations and includes a subject term index and title list.) (Copyright NERAC, Inc. 1995)
Composition-Mediated Order-Disorder Transformation in FePt Nanoparticles
Johnston-Peck, Aaron C [ORNL; Cullen, David A [ORNL; Tracy, Joseph B [North Carolina State University
2013-01-01T23:59:59.000Z
Thumbnail image of graphical abstract Heat-treated alloy FePt nanoparticles transform into L10 FePt and mixed L10/L12 FePt3 intermetallic phases. Enrichment in Pt in some nanoparticles, rather than intrinsic thermodynamic effects, drives phase segregation. FePt nanoparticles of uniform, equimolar composition are expected to transform into phase-pure, highly ordered L10 FePt nanoparticles.
Properties of Some Integral Transforms Arising in Tomography
Moon, Sunghwan
2013-10-11T23:59:59.000Z
introduce a different Radon-type transform arising in photo acoustic tomography with circular detectors, and study mathematically similar object, a toroidal Radon transform. We also consider the cone transform arising in Compton camera imaging as well...
Modeling and Characterization of On-Chip Transformers
Lee, Thomas H.
Modeling and Characterization of On-Chip Transformers Sunderarajan S. Mohan, C. Patrick Yue, Maria #12;OUTLINE Motivation Background On-chip transformer realizations Models Experimental verification Summary #12;MOTIVATION FOR TRANSFORMER MODELING Essential for Radio Frequency Integrated Circuits (RFICs
Future Directions In Program Transformations 1 New York University
Paige, Robert
for real time applications, design automation, operations research, genetic engineering, optimizingFuture Directions In Program Transformations 1 R. Paige New York University As the emphasis transformations has naturally gained in importance. This paper briefly surveys what transformational programming
A Transformation System for Lazy Functional Logic Programs?
Vidal, GermÃ¡n
over to the transformation process and the transformed programs. We illus- trate the power A Transformation System for Lazy Functional Logic Programs? Mar. gmoreno@info-ab.uclm.es Abstract. Needed narrowing is a complete operational principle
GENERALIZED FOURIER TRANSFORMATIONS: THE WORK OF BOCHNER AND CARLEMAN
Kiselman, Christer
GENERALIZED FOURIER TRANSFORMATIONS: THE WORK OF BOCHNER AND CARLEMAN-1949) presented gen- eralizations of the Fourier transform of functions defined on the real axis* *. While Bochner's idea was to define the Fourier transform as a (formal) derivative* * of high order
Women Leaders in Medicine: Institutional Transformation Required
Sheridan, Jennifer
Women Leaders in Medicine: Institutional Transformation Required Molly Carnes, MD, MS Professor, Depts Medicine, Psychiatry, and Industrial & Systems Engineering University of Wisconsin Director, Women's progress toward leadership #12;Sexist discrimination still exists it is just less blatant than
Regeneration and genetic transformation of Atriplex canescens
Mei, Beijian
1995-01-01T23:59:59.000Z
. In this research, methods for Atriplex regeneration and genetic transformation were developed with the objective of understanding gene functions as well as developing gene transfer technology for the improved quality of this native shrub. Organogenesis from leaf...
Lean transformation of a supply chain organization
Walsh, Daniel Andres
2008-01-01T23:59:59.000Z
There are two basic schools of thought regarding how to approach a Lean transformation. Either start with introducing Lean tools or start with driving a Lean cultural change. Academic researchers like Steve Spear (Harvard/MIT), ...
Program Transformations in Weak Memory Models
Sevcik, Jaroslav
2009-01-01T23:59:59.000Z
We analyse the validity of common optimisations on multi-threaded programs in two memory models—the DRF guarantee and the Java Memory Model. Unlike in the single-threaded world, even simple program transformations, such ...
A non-destructive transformer oil tester
Cargol, Timothy L. (Timothy Lawrence), 1976-
2000-01-01T23:59:59.000Z
A new non-destructive test of transformer oil dielectric strength is a promising technique to automate and make more reliable a diagnostic that presently involves intensive manual efforts. This thesis focuses some of the ...
Deforestation: Transforming programs to eliminate trees
Wadler, Philip
Deforestation: Transforming programs to eliminate to eliminate inter* *mediate lists_and intermediate trees_called the Deforestation Algorithm. A form of fun. Treeless form and the Deforestation Algorithm are presented in three steps. * *The first step presents
Abiotic and Biological Transformation of Tetraalkoxysilanes
Semprini, Lewis
. An aerobic microbial culture from the local wastewater treatment plant that could grow and mineralizeAbiotic and Biological Transformation of Tetraalkoxysilanes and Trichloroethene/ cis-1 compounds (tetra- alkoxysilanes) by abiotic hydrolysis and biological mineralization was investigated
Project Profile: Transformational Approach to Reducing the Total...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
Transformational Approach to Reducing the Total System Costs of Building-Integrated Photovoltaics Project Profile: Transformational Approach to Reducing the Total System Costs of...
Building America Whole-House Solutions for New Homes: Transformations...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
Transformations, Inc. Net Zero Energy Communities (Fact Sheet) Building America Whole-House Solutions for New Homes: Transformations, Inc. Net Zero Energy Communities (Fact Sheet)...
ARPA-E Announces $43 Million for Transformational Energy Storage...
43 Million for Transformational Energy Storage Projects to Advance Electric Vehicle and Grid Technologies ARPA-E Announces 43 Million for Transformational Energy Storage Projects...
Biogeochemical Transformation of Fe Minerals in a Petroleum-Contaminat...
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
Transformation of Fe Minerals in a Petroleum-Contaminated Aquifer. Biogeochemical Transformation of Fe Minerals in a Petroleum-Contaminated Aquifer. Abstract: Biogeochemical...
DOE Zero Energy Ready Home Case Study: Transformation Inc., Production...
Transformation Inc., Production House, Devens, MA DOE Zero Energy Ready Home Case Study: Transformation Inc., Production House, Devens, MA Case study of a DOE Zero Energy Ready...
Energy Transformation in the U.S. Virgin Islands | Department...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
About Us Initiatives & Projects Energy Transition Initiative Energy Transformation in the U.S. Virgin Islands Energy Transformation in the U.S. Virgin Islands Click on the...
Planar Optical Waveguide Coupler Transformers for High-Power...
Broader source: Energy.gov (indexed) [DOE]
Planar Optical Waveguide Coupler Transformers for High-Power Solar Enegy Collection and Transmission Planar Optical Waveguide Coupler Transformers for High-Power Solar Enegy...
arsenical-induced malignant transformation: Topics by E-print...
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
due to altered sialylation of cell surface Paris-Sud XI, Universit de 33 Monad Transformers as Monoid Transformers Mauro Jaskelioff Computer Technologies and Information...
Genetic Transformation and Mutagenesis Via Single-Stranded DNA...
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Genetic Transformation and Mutagenesis Via Single-Stranded DNA in the Unicellular, Diazotrophic Cyanobacteria of the Genus Genetic Transformation and Mutagenesis Via...
C60 Secondary Ion Fourier Transform Ion Cyclotron Resonance Mass...
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C60 Secondary Ion Fourier Transform Ion Cyclotron Resonance Mass Spectrometry. C60 Secondary Ion Fourier Transform Ion Cyclotron Resonance Mass Spectrometry. Abstract: Secondary...
High Throughput Operando Studies using Fourier Transform Infrared...
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Throughput Operando Studies using Fourier Transform Infrared Imaging and Raman Spectroscopy. High Throughput Operando Studies using Fourier Transform Infrared Imaging and Raman...
Vortex Hydro Energy Develops Transformational Technology to Harness...
Vortex Hydro Energy Develops Transformational Technology to Harness Energy from Water Currents Vortex Hydro Energy Develops Transformational Technology to Harness Energy from Water...
Aggregation, Coarsening, and Phase Transformation in ZnSNanoparticles...
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
Coarsening, and Phase Transformation in ZnS NanoparticlesStudied by Molecular Dynamics Simulations. Aggregation, Coarsening, and Phase Transformation in ZnS...
EPA Webcast - Creating a Green Infrastructure Plan to Transform...
Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site
EPA Webcast - Creating a Green Infrastructure Plan to Transform Your Community EPA Webcast - Creating a Green Infrastructure Plan to Transform Your Community November 18, 2014...
Webinar: Creating a Green Infrastructure Plan to Transform Your...
Broader source: Energy.gov (indexed) [DOE]
Webinar: Creating a Green Infrastructure Plan to Transform Your Community Webinar: Creating a Green Infrastructure Plan to Transform Your Community November 18, 2014 3:00PM to...
ARPA-E FY2010 Annual Report Highlights Transformational Projects...
Annual Report Highlights Transformational Projects Since Agency's Establishment ARPA-E FY2010 Annual Report Highlights Transformational Projects Since Agency's Establishment...
Toward Sustainable Communities: Transition and Transformations in Environmental Policy
Calloway, Michele
2001-01-01T23:59:59.000Z
and Transformations in Environmental Policy By Daniel A.Transformations in Environmental Policy. Cambridge, MA: MITpaper). US$25.00 Environmental policy in the United States
Robert T. Thompson; Mohsen Fathi
2015-06-29T23:59:59.000Z
The fully covariant formulation of transformation optics is used to find the configuration of a cloaking device operating in an expanding universe modelled by a Friedmann-Lema\\^itre-Robertson-Walker spacetime. This spacetime cloak is used as a platform for probing the covariant formulation of transformation optics, thereby rigorously enhancing the conceptual understanding of the theory. By studying the problem in both comoving and physical coordinates we explicitly demonstrate the preservation of general covariance of electrodynamics under the transformation optics procedure. This platform also enables a detailed study of the various transformations that arise in transformation optics. We define a corporeal transformation as the "transformation" of transformation optics, and distinguish it from coordinate and frame transformations. We find that corporeal transformations considered in the literature have generally been restricted to a subset of all possible corporeal transformations, providing a potential mechanism for increased functionality of transformation optics.
Proposed Giaever transformer to probe the pseudogap phase of cuprates.
Levchenko, A.; Norman, M. R. (Materials Science Division)
2011-03-01T23:59:59.000Z
We develop a theory of the rectification effect in a double-layer system where both layers are superconductors or one of the layers is a normal metal. The Coulomb interaction is assumed to provide the dominant coupling between the layers. We find that superconducting fluctuations strongly enhance the drag conductivity, with rectification most pronounced when both layers are superconductors. In view of their distinct dependence on temperature near T{sub c} and layer separation, drag measurements based on a Giaever transformer could distinguish whether rectification occurs due to fluctuating pairs or inductively coupled fluctuating vortices.
Commissioning of the new AGS MMPS transformers
Bajon,E.; Badea, V. S.; Bannon, M.; Bonati, R.; Marneris, I. M.; Porqueddu, r.; Roser, T.; Sandberg, J.; Savatteri, S.
2009-05-04T23:59:59.000Z
The Brookhaven AGS Main Magnet Power Supply (MMPS) is a thyristor control supply rated at 5500 Amps. +/-9000 Volts. The peak magnet power is 50 MWatts. The power supply is fed from a motor/generator manufactured by Siemens. During rectify and invert operation the P Bank power supplies are used. During the flattops the F Bank power supplies are used. The P Bank power supplies are fed from two 23 MVA transformers and the F Bank power supplies are fed from two 5.3 MYA transformers. The fundamental frequency of the F Bank power supplies is 1440 Hz, however the fundamental frequency of the P banks was 720 Hz. It was very important to reduce the ripple during rectify to improve polarized proton operations. For this reason and also because the original transformers were 45 years old we replaced these transformers with new ones and we made the fundamental frequency of both P and F banks 1440 Hz. This paper will highlight the major hurdles that were involved during the installation of the new transformers. It will present waveforms while running at different power levels up to 6MW full load. It will show the transition from the F-Bank power supplies to the P-Banks and also show the improvements in ripple made on the P-Bank power supplies.
THE CAMPAIGN TO TRANSFORM EINSTEIN 2 THE CAMPAIGN TO TRANSFORM EINSTEIN
Yates, Andrew
THE CAMPAIGN TO TRANSFORM EINSTEIN #12;2 THE CAMPAIGN TO TRANSFORM EINSTEIN #12;ALBERT EINSTEIN COLLEGE OF MEDICINE 1 F or more than five decades, Albert Einstein College of Medicine has responded to the changing landscape of biomedical research with a commitment to improving human health. Einstein's research
Transform-Space View: Performing Spatial Join in the Transform Space
Whang, Kyu-Young
Transform-Space View: Performing Spatial Join in the Transform Space Using Original-Space Indexes that satisfy a given spatial relationship. In spatial joins using indexes, original-space indexes such as the R-tree are widely used. An original-space index is the one that indexes objects as represented in the original space
Seismic imaging with the generalized Radon transform: A curvelet transform perspective
Smith, Hart F.
Seismic imaging with the generalized Radon transform: A curvelet transform perspective M V de Hoop1@purdue.edu Abstract. A key challenge in the seismic imaging of reflectors using surface reflection data. Introduction 1.1. Seismic Imaging with Arrays Â Beyond Current Capabilities Much research in modern
Computing Invariants with Transformers: Experimental Scalability and Accuracy
NSAD 2014 Computing Invariants with Transformers: Experimental Scalability and Accuracy Vivien as transformers, and then propagate the preconditions using the transformers. The second approach is modular the call graph and all the control flow graphs. However, the transformer approach based on polyhedral
Transformations between Composite and Visitor implementations in Java
Paris-Sud XI, Université de
Transformations between Composite and Visitor implementations in Java Akram Ajouli ASCOLA (EMN be chained to perform complex structure transformations. This is useful for recovering the initial a refactoring-based round- trip transformation between these two structures and we study how that transformation
On Transforming Spectral Peaks in Voice Conversion Elizabeth Godoy 1
Paris-Sud XI, Université de
On Transforming Spectral Peaks in Voice Conversion Elizabeth Godoy 1 , Olivier Rosec1 , Thierry.chonavel@telecom-bretagne.eu Abstract This paper explores the benefits of transforming spectral peaks in voice conversion. First, in examining classic GMM- based transformation with cepstral coefficients, we show that the lack of transformed
Transformation of Meta-Information by Abstract Co-Interpretation
Transformation of Meta-Information by Abstract Co-Interpretation Raimund Kirner and Peter Puschner based on abstract interpretation to transform meta-information in parallel with the transformation. The construction of a correct transformation function for the meta-information can be quite complicated in case
Wavelet Transforms for Vector Fields Using Omnidirectionally Balanced Multiwavelets
Fowler, James E.
Wavelet Transforms for Vector Fields Using Omnidirectionally Balanced Multiwavelets James E. Fowler, Senior Member, IEEE, and Li Hua, Student Member, IEEE Abstract--Vector wavelet transforms for vector implementation of a vector wavelet transform, namely the application of a scalar transform to each vector
The $?$-deformed Segal-Bargmann transform is a Hall type transform
Stephen Bruce Sontz
2009-07-13T23:59:59.000Z
We present an explanation of how the $\\mu$-deformed Segal-Bargmann spaces, that are studied in various articles of the author in collaboration with Angulo, Echevarria and Pita, can be viewed as deserving their name, that is, how they should be considered as a part of Segal-Bargmann analysis. This explanation relates the $\\mu$-deformed Segal-Bargmann transforms to the generalized Segal-Bargmann transforms introduced by B. Hall using heat kernel analysis. All the versions of the $\\mu$-deformed Segal-Bargmann transform can be understood as Hall type transforms. In particular, we define a $\\mu$-deformation of Hall's "Version C" generalized Segal-Bargmann transform which is then shown to be a $\\mu$-deformed convolution with a $\\mu$-deformed heat kernel followed by analytic continuation. Our results are generalizations and analogues of the results of Hall.
Transformations of Logic Programs on Infinite Lists
Pettorossi, Alberto; Senni, Valerio; 10.1017/S1471068410000177
2010-01-01T23:59:59.000Z
We consider an extension of logic programs, called \\omega-programs, that can be used to define predicates over infinite lists. \\omega-programs allow us to specify properties of the infinite behavior of reactive systems and, in general, properties of infinite sequences of events. The semantics of \\omega-programs is an extension of the perfect model semantics. We present variants of the familiar unfold/fold rules which can be used for transforming \\omega-programs. We show that these new rules are correct, that is, their application preserves the perfect model semantics. Then we outline a general methodology based on program transformation for verifying properties of \\omega-programs. We demonstrate the power of our transformation-based verification methodology by proving some properties of Buechi automata and \\omega-regular languages.
KSI's Cross Insulated Core Transformer Technology
Uhmeyer, Uwe [Kaiser Systems, Inc, 126 Sohier Road, Beverly, MA 01915 (United States)
2009-08-04T23:59:59.000Z
Cross Insulated Core Transformer (CCT) technology improves on Insulated Core Transformer (ICT) implementations. ICT systems are widely used in very high voltage, high power, power supply systems. In an ICT transformer ferrite core sections are insulated from their neighboring ferrite cores. Flux leakage is present at each of these insulated gaps. The flux loss is raised to the power of stages in the ICT design causing output voltage efficiency to taper off with increasing stages. KSI's CCT technology utilizes a patented technique to compensate the flux loss at each stage of an ICT system. Design equations to calculate the flux compensation capacitor value are presented. CCT provides corona free operation of the HV stack. KSI's CCT based High Voltage power supply systems offer high efficiency operation, high frequency switching, low stored energy and smaller size over comparable ICT systems.
Automatic transformations in the inference process
Veroff, R. L.
1980-07-01T23:59:59.000Z
A technique for incorporating automatic transformations into processes such as the application of inference rules, subsumption, and demodulation provides a mechanism for improving search strategies for theorem proving problems arising from the field of program verification. The incorporation of automatic transformations into the inference process can alter the search space for a given problem, and is particularly useful for problems having broad rather than deep proofs. The technique can also be used to permit the generation of inferences that might otherwise be blocked and to build some commutativity or associativity into the unification process. Appropriate choice of transformations, and new literal clashing and unification algorithms for applying them, showed significant improvement on several real problems according to several distinct criteria. 22 references, 1 figure.
HERCULES: A Pattern Driven Code Transformation System
Kartsaklis, Christos [ORNL; Hernandez, Oscar R [ORNL; Hsu, Chung-Hsing [ORNL; Ilsche, Thomas [Technische Universitat Dresden; Joubert, Wayne [ORNL; Graham, Richard L [ORNL
2012-01-01T23:59:59.000Z
New parallel computers are emerging, but developing efficient scientific code for them remains difficult. A scientist must manage not only the science-domain complexity but also the performance-optimization complexity. HERCULES is a code transformation system designed to help the scientist to separate the two concerns, which improves code maintenance, and facilitates performance optimization. The system combines three technologies, code patterns, transformation scripts and compiler plugins, to provide the scientist with an environment to quickly implement code transformations that suit his needs. Unlike existing code optimization tools, HERCULES is unique in its focus on user-level accessibility. In this paper we discuss the design, implementation and an initial evaluation of HERCULES.
Phase Transformation in Cast Superaustenitic Stainless Steels
Nathaniel Steven Lee Phillips
2006-12-12T23:59:59.000Z
Superaustenitic stainless steels constitute a group of Fe-based alloys that are compositionally balanced to have a purely austenitic matrix and exhibit favorable pitting and crevice corrosion resistant properties and mechanical strength. However, intermetallic precipitates such as sigma and Laves can form during casting or exposure to high-temperature processing, which degrade the corrosion and mechanical properties of the material. The goal of this study was to accurately characterize the solid-solid phase transformations seen in cast superaustenitic stainless steels. Heat treatments were performed to understand the time and temperature ranges for intermetallic phase formations in alloys CN3MN and CK3MCuN. Microstructures were characterized using scanning electron microscopy (SEM), transmission electron microscopy (TEM), and energy and wavelength dispersive spectroscopy (EDS, WDS). The equilibrium microstructures, composed primarily of sigma and Laves within purely austenitic matrices, showed slow transformation kinetics. Factors that determine the extent of transformation, including diffusion, nucleation, and growth, are discussed.
Applications of a fast, continuous wavelet transform
Dress, W.B.
1997-02-01T23:59:59.000Z
A fast, continuous, wavelet transform, based on Shannon`s sampling theorem in frequency space, has been developed for use with continuous mother wavelets and sampled data sets. The method differs from the usual discrete-wavelet approach and the continuous-wavelet transform in that, here, the wavelet is sampled in the frequency domain. Since Shannon`s sampling theorem lets us view the Fourier transform of the data set as a continuous function in frequency space, the continuous nature of the functions is kept up to the point of sampling the scale-translation lattice, so the scale-translation grid used to represent the wavelet transform is independent of the time- domain sampling of the signal under analysis. Computational cost and nonorthogonality aside, the inherent flexibility and shift invariance of the frequency-space wavelets has advantages. The method has been applied to forensic audio reconstruction speaker recognition/identification, and the detection of micromotions of heavy vehicles associated with ballistocardiac impulses originating from occupants` heart beats. Audio reconstruction is aided by selection of desired regions in the 2-D representation of the magnitude of the transformed signal. The inverse transform is applied to ridges and selected regions to reconstruct areas of interest, unencumbered by noise interference lying outside these regions. To separate micromotions imparted to a mass-spring system (e.g., a vehicle) by an occupants beating heart from gross mechanical motions due to wind and traffic vibrations, a continuous frequency-space wavelet, modeled on the frequency content of a canonical ballistocardiogram, was used to analyze time series taken from geophone measurements of vehicle micromotions. By using a family of mother wavelets, such as a set of Gaussian derivatives of various orders, features such as the glottal closing rate and word and phrase segmentation may be extracted from voice data.
Transformative monitoring approaches for reprocessing.
Cipiti, Benjamin B.
2011-09-01T23:59:59.000Z
The future of reprocessing in the United States is strongly driven by plant economics. With increasing safeguards, security, and safety requirements, future plant monitoring systems must be able to demonstrate more efficient operations while improving the current state of the art. The goal of this work was to design and examine the incorporation of advanced plant monitoring technologies into safeguards systems with attention to the burden on the operator. The technologies examined include micro-fluidic sampling for more rapid analytical measurements and spectroscopy-based techniques for on-line process monitoring. The Separations and Safeguards Performance Model was used to design the layout and test the effect of adding these technologies to reprocessing. The results here show that both technologies fill key gaps in existing materials accountability that provide detection of diversion events that may not be detected in a timely manner in existing plants. The plant architecture and results under diversion scenarios are described. As a tangent to this work, both the AMUSE and SEPHIS solvent extraction codes were examined for integration in the model to improve the reality of diversion scenarios. The AMUSE integration was found to be the most successful and provided useful results. The SEPHIS integration is still a work in progress and may provide an alternative option.
Noether's Theorem Under the Legendre Transform
Jonathan Herman
2014-09-29T23:59:59.000Z
In this paper we demonstrate how the Legendre transform connects the statements of Noether's theorem in Hamiltonian and Lagrangian mechanics. We give precise definitions of symmetries and conserved quantities in both the Hamiltonian and Lagrangian frameworks and discuss why these notions in the Hamiltonian framework are somewhat less rigid. We explore conditions which, when put on these definitions, allow the Legendre transform to set up a one-to-one correspondence between them. We also discuss how to preserve this correspondence when the definitions of symmetries and conserved quantities are less restrictive.
Low Dose Suppression of Neoplastic Transformation in Vitro
John Leslie Redpath
2012-05-01T23:59:59.000Z
This grant was to study the low dose suppression of neoplastic transformation in vitro and the shape of the dose-response curve at low doses and dose-rates of ionizing radiation. Previous findings had indicated a suppression of transformation at dose <10cGy of low-LET radiation when delivered at high dose-rate. The present study indicates that such suppression extends out to doses in excess of 100cGy when the dose (from I-125 photons) is delivered at dose-rates as low as 0.2 mGy/min and out to in excess of {approx}25cGy the highest dose studied at the very low dose-rate of 0.5 mGy/day. We also examined dose-rate effects for high energy protons (which are a low-LET radiation) and suppression was evident below {approx}10cGy for high dose-rate delivery and at least out to 50cGy for low dose-rate (20cGy/h) delivery. Finally, we also examined the effect of low doses of 1 GeV/n iron ions (a high-LET radiation) delivered at high dose-rate on transformation at low doses and found a suppression below {approx}10cGy that could be attributable to an adaptive response in bystander cells induced by the associated low-LET delta rays. These results have implications for cancer risk assessment at low doses.
Dirk Veestraeten
2015-05-21T23:59:59.000Z
The Laplace transforms of the transition probability density and distribution functions for the Ornstein-Uhlenbeck process contain the product of two parabolic cylinder functions, namely D_{v}(x)D_{v}(y) and D_{v}(x)D_{v-1}(y), respectively. The inverse transforms of these products have as yet not been documented. However, the transition density and distribution functions can be obtained by alternatively applying Doob's transform to the Kolmogorov equation and casting the problem in terms of Brownian motion. Linking the resulting transition density and distribution functions to their Laplace transforms then specifies the inverse transforms to the aforementioned products of parabolic cylinder functions. These two results, the recurrence relation of the parabolic cylinder function and the properties of the Laplace transform then enable the calculation of inverse transforms also for countless other combinations in the orders of the parabolic cylinder functions such as D_{v}(x)D_{v-2}(y), D_{v+1}(x)D_{v-1}(y) and D_{v}(x)D_{v-3}(y).
Transformational Technologies to Expedite Space Access and Development
Rather, John D. G. [Rather Creative Innovations Group, Inc., 102 Windsong Lane, Oak Ridge, TN (United States)
2010-01-28T23:59:59.000Z
Throughout history the emergence of new technologies has enabled unforeseen breakthrough capabilities that rapidly transformed the world. Some global examples from the twentieth century include AC electric power, nuclear energy, and turbojet engines. At the systems level, success of both Apollo and the Space Shuttle programs depended upon taming hydrogen propulsion and developing high-temperature atmospheric reentry materials. Human space development now is stymied because of a great need for breakthrough technologies and strategies. It is believed that new capabilities exist within the present states-of-the-art of superconducting technology that can be implemented to transform the future of human space development. This paper is an overview of three other papers presented within this forum, which summarizes the principles and consequences of StarTram, showing how the resulting breakthrough advantages can lead directly to safe space tourism and massive development of the moon, Mars and the outer solar system. StarTram can implement cost-effective solar power from space, simple utilization of asteroid material to protect humans from ionizing radiation, and effective defense of the Earth from devastating cosmic impacts. Synergistically, StarTram technologies will revolutionize ground transportation on the Earth, leading to enormous reduction in energy consumption and creation of millions of jobs. High energy lasers will also be discussed because of their importance to power beaming applications.
Studies on the coupling transformer to improve the performance of microwave ion source
Misra, Anuraag, E-mail: pandit@vecc.gov.in, E-mail: vspandit12@gmail.com, E-mail: anuraag@vecc.gov.in; Pandit, V. S., E-mail: pandit@vecc.gov.in, E-mail: vspandit12@gmail.com, E-mail: anuraag@vecc.gov.in [Variable Energy Cyclotron Centre, 1- AF, Bidhannagar, Kolkata 700064 (India)
2014-06-15T23:59:59.000Z
A 2.45 GHz microwave ion source has been developed and installed at the Variable Energy Cyclotron Centre to produce high intensity proton beam. It is operational and has already produced more than 12 mA of proton beam with just 350 W of microwave power. In order to optimize the coupling of microwave power to the plasma, a maximally flat matching transformer has been used. In this paper, we first describe an analytical method to design the matching transformer and then present the results of rigorous simulation performed using ANSYS HFSS code to understand the effect of different parameters on the transformed impedance and reflection and transmission coefficients. Based on the simulation results, we have chosen two different coupling transformers which are double ridged waveguides with ridge widths of 24 mm and 48 mm. We have fabricated these transformers and performed experiments to study the influence of these transformers on the coupling of microwave to plasma and extracted beam current from the ion source.
Operational Equivalence of Graph Transformation Systems
Sarna-Starosta, Beata
Operational Equivalence of Graph Transformation Systems Frank Raiser and Thom FrÂ¨uhwirth Faculty. With the growing number of GTS- based applications the comparison of operational equivalence of two GTS becomes an important area of research. This work introduces a notion of operational equivalence for graph
A SIMPLEX-BASED PROJECTIVE TRANSFORM ESTIMATOR
Robinson, John A.
A SIMPLEX-BASED PROJECTIVE TRANSFORM ESTIMATOR J A Robinson University of York, UK. INTRODUCTION. THE SAM ESTIMATOR The estimator to be described here is called Simplex-Adapted Mesh (SAM). It has two to in the name a sparse sam- ple mesh and the Nelder-Mead simplex and is more novel. For convenience I use
Staring 2-D hadamard transform spectral imager
Gentry, Stephen M. (Albuquerque, NM); Wehlburg, Christine M. (Albuquerque, NM); Wehlburg, Joseph C. (Albuquerque, NM); Smith, Mark W. (Albuquerque, NM); Smith, Jody L. (Albuquerque, NM)
2006-02-07T23:59:59.000Z
A staring imaging system inputs a 2D spatial image containing multi-frequency spectral information. This image is encoded in one dimension of the image with a cyclic Hadamarid S-matrix. The resulting image is detecting with a spatial 2D detector; and a computer applies a Hadamard transform to recover the encoded image.
Lorentz transformations with arbitrary line of motion
Chandru Iyer; G. M. Prabhu
2008-09-18T23:59:59.000Z
Sometimes it becomes a matter of natural choice for an observer (A) that he prefers a coordinate system of two-dimensional spatial x-y coordinates from which he observes another observer (B) who is moving at a uniform speed along a line of motion, which is not collinear with As chosen x or y axis. It becomes necessary in such cases to develop Lorentz transformations where the line of motion is not aligned with either the x or the y-axis. In this paper we develop these transformations and show that under such transformations, two orthogonal systems (in their respective frames) appear non-orthogonal to each other. We also illustrate the usefulness of the transformation by applying it to three problems including the rod-slot problem. The derivation has been done before using vector algebra. Such derivations assume that the axes of K and K-prime are parallel. Our method uses matrix algebra and shows that the axes of K and K-prime do not remain parallel, and in fact K and K-prime which are properly orthogonal are observed to be non-orthogonal by K-prime and K respectively. http://www.iop.org/EJ/abstract/0143-0807/28/2/004
Full bridge converter Transformers and isolated converters
Knobloch,Jürgen
Full bridge converter Transformers and isolated converters Most DC power supplies have the following requirements: 1. Regulated output voltage Solved by a large capacitor at the output, and feedback control. 2. High power factor PFC - discussed previously. 3. Isolation 4. Multiple outputs Isolated
Transforming the Museum SPARK | THINK | MAKE
Aalberts, Daniel P.
Transforming the Museum SPARK | THINK | MAKE #12;WILLIAMS COLLEGE MUSEUM OF ART 1 Museums. Because of its varied collections and its breadth and nimbleness of forms, the college museum of the museum's 9th decade of history. As we developed the vision for its future we sought to both leverage its
Transforming IT University Health Care System
Transforming IT University Health Care System improves patient care with enterprise grid storage infrastructure. Solution IBM helped University Health Care System (UHCS) develop a plan for using technology of storage University Health Care System is a not- for-profit community hospital network that serves 25
HTS Power Transformers Presented to the
1 HTS Power Transformers Presented to the 2004 DOE Peer Review Committee For the WES flexibility. Allows operation from 20 K to 77 K permitting full system optimization. Best available conductor/SP/EE/ORNL Team By S.W. Schwenterly E.F. Pleva D.W. Hazelton Oak Ridge Waukesha SuperPower, Inc. National
2010 Solar Market Transformation Analysis and Tools
Broader source: Energy.gov [DOE]
This document is an overview describing the solar analysis and tool development projects funded by the DOE Market Transformation team for fiscal year 2010. These quick snapshots are intended to give you a basic look at the scope, timeline, and expected deliverables for each project.
Transformation texture of allotriomorphic ferrite in steel
Cambridge, University of
Transformation texture of allotriomorphic ferrite in steel D. W. Kim1 , R. S. Qin1 and H. K. D. H into that of the product is mathematically defined. This is not the case when the ferrite forms by a reconstructive mechanism. The allotriomorphic ferrite nucleates heterogeneously at austenite grain boundaries, and although
IMAGE COMPRESSION USING SPLINE BASED WAVELET TRANSFORMS
Averbuch, Amir
known codec. Keywords: Sample, edited book Introduction The three fundamental building blocks with one well known codec. 0.1. Wavelet Based Image Coders Wavelet transforms provide very good energy of partitioning, aggregation and conditional codingÂ PACC. Following these concepts, the data object emerging from
Capturing Database Transformations for Big Data Analytics
Ordonez, Carlos
of Houston DBMS #12;Organization Â· Introduction Â· Classification Â· Program Â· Case Study Â· Conclusions DBMS Transformations to Build Data Sets for Data Mining, Data & Knowledge Engineering (DKE), 2014, Elsevier. DBMS #12 for this project might remain in the database, using resources. DBMS #12;Motivation: Saving Work Â· Different users
Deforestation: Transforming programs to eliminate trees
Wadler, Philip
Deforestation: Transforming programs to eliminate trees Philip Wadler University of Glasgow \\Lambda---called the Deforestation Algorithm. A form of function definition that uses no intermediate trees is characterised, called and the Deforestation Algorithm are presented in three steps. The first step presents ``pure'' treeless form in a first
First principles calculations for analysis martensitic transformations
Harmon, B.N.; Zhao, G.L.; Ho, K.M.; Chan, C.T.; Ye, Y.Y.; Ding, Y.; Zhang, B.L.
1993-10-01T23:59:59.000Z
The change in crystal energy is calculated for atomic displacements corresponding to phonons, elastic shears, and lattice transformations. Anomalies in the phonon dispersion curves of NiAl and NiTi are analyzed and recent calculations for TiPd alloys are presented.
Accelerating the transformation of power systems
Accelerating the transformation of power systems Introduction Flexibility of operation--the ability of a power system to respond to change in demand and supply--is a characteristic of all power systems. Flexibility is especially prized in twenty-first century power systems, with higher levels of grid
Transformation and regeneration of Texas cotton
Luo, Jinhua
2000-01-01T23:59:59.000Z
contained genes associated with pathogen resistance (PR genes): osmotin (PR-5) and a basic PR-1 in pXBOP, and lox1 in pJMA4. Plants were transformed using the shoot apex/Agrobacterium method (US Pat. # 5,164,310; Smith et al., 1992) developed earlier...
Early diagenetic transformations of peat Original research
Paris-Sud XI, Université de
Early diagenetic transformations of peat Original research Organic matter sources and decay;KEY WORDS: bioindicators - carbohydrates - labile organic matter - peat botanical composition to the fate of organic matter (OM) in the underlying peat. Our aims were to determine how moisture conditions
Contact Anosov flows and the FBI transform
Tsujii, Masato
2010-01-01T23:59:59.000Z
This paper is about spectral properties of transfer operators for contact Anosov flows. The main result gives the essential spectral radius of the transfer operators acting on the so-called anisotropic Sobolev space exactly in terms of dynamical exponents. Also we provide a simplified proof by using the FBI transform.
Information retrieval system utilizing wavelet transform
Brewster, Mary E. (Kennewick, WA); Miller, Nancy E. (Kennewick, WA)
2000-01-01T23:59:59.000Z
A method for automatically partitioning an unstructured electronically formatted natural language document into its sub-topic structure. Specifically, the document is converted to an electronic signal and a wavelet transform is then performed on the signal. The resultant signal may then be used to graphically display and interact with the sub-topic structure of the document.
Birck Nanotechnology Center Transforming Light with Metamaterials
Fiebig, Peter
Birck Nanotechnology Center Transforming Light with Metamaterials (with A.V. Kildishev, W. Cai, V.P. Drachev, S. Xiao, U. Chettiar) OUTLINE Birck Nanotechnology Center Vladimir M. Shalaev Purdue University;Birck Nanotechnology Center Meta-Magnetics: from 10GHz to 200THz Terahertz magnetism a) Yen, et al. ~ 1
Canonoid and Poissonoid Transformations, Symmetries and BiHamiltonian Structures
Giovanni Rastelli; Manuele Santoprete
2015-02-25T23:59:59.000Z
We give a characterization of linear canonoid transformations on symplectic manifolds and we use it to generate biHamiltonian structures for some mechanical systems. Utilizing this characterization we also study the behavior of the harmonic oscillator under canonoid transformations. We present a description of canonoid transformations due to E.T. Whittaker, and we show that it leads, in a natural way, to the modern, coordinate-independent definition of canonoid transformations. We also generalize canonoid transformations to Poisson manifolds by introducing Poissonoid transformations. We give examples of such transformations for Euler's equations of the rigid body (on $\\mathcal{so}^\\ast (3) $ and $ so^\\ast (4)$) and for an integrable case of Kirchhoff's equations for the motion of a rigid body immersed in an ideal fluid. We study the relationship between biHamiltonian structures and Poissonoid transformations for these examples. We analyze the link between Poissonoid transformations, constants of motion, and symmetries.
Effective synchronization of MRP to production during a lean transformation
Richards, Philip L. (Philip Lloyd)
2007-01-01T23:59:59.000Z
Raytheon - Network Centric Systems (NCS) division develops and produces mission solutions for networking, command and control, battlespace awareness, and air traffic management. The facility in Largo, Florida, produces ...
A Method for Compressing Test Data Based on Burrows-Wheeler Transformation
Ha, Dong S.
A Method for Compressing Test Data Based on Burrows-Wheeler Transformation Takahiro J. Yamaguchi AbstractÃThe overall throughput of automatic test equipment (ATE) is affected by the download time of test data. An effective approach to the reduction of the download time is to compress test data before
their historic mission and respond energetically and effectively to these new challenges? The University of New1 The University of New Hampshire in 2020: Breaking Silos, Transforming Lives, Reimagining of our state, our nation and our world. For 143 years we have served the people and communities of New
Switching periodic membranes via pattern transformation and shape memory Jongmin Shim,b
Switching periodic membranes via pattern transformation and shape memory effect Jie Li,a Jongmin in shape memory polymer (SMP) membranes consisting of a hexagonal array of micron-sized circular holes a stamp. In both scenarios, the original color displays can be recovered. Introduction Shape memory
Optimal Choice for Number of Strands in a Litz-Wire Transformer Winding
component of this work in other works must be obtained from the IEEE. #12;IEEE TRANSACTIONS ON POWER wire, magnet wire, power electronics, power transformers, proximity-effect losses, skin ef- fect of magnetic components for a solar-powered race vehicle [1] (the original impetus for this work) an optimal
The Transformations of Messianic Revolt and the Founding of the Ming Dynasty
Dardess, John W.
1970-09-01T23:59:59.000Z
-chan shui-picn chi ch'i tsai li-shih- thang 10 ch'i ti chin-pu tso-yung" [ 'The Develop- ment and Transformation of the Late Yiian Peasant Huings and their Progressive Effect on History"], Li-shih yen-chiu, No. 4 (1954), p. 99. 68 Chao Fang, loc. cit...
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville Power AdministrationField Campaign:INEA :Work4/11ComputationalEdNERSC:Effect of0/2002Effects of
Two-dimensional fourier transform spectrometer
DeFlores, Lauren; Tokmakoff, Andrei
2013-09-03T23:59:59.000Z
The present invention relates to a system and methods for acquiring two-dimensional Fourier transform (2D FT) spectra. Overlap of a collinear pulse pair and probe induce a molecular response which is collected by spectral dispersion of the signal modulated probe beam. Simultaneous collection of the molecular response, pulse timing and characteristics permit real time phasing and rapid acquisition of spectra. Full spectra are acquired as a function of pulse pair timings and numerically transformed to achieve the full frequency-frequency spectrum. This method demonstrates the ability to acquire information on molecular dynamics, couplings and structure in a simple apparatus. Multi-dimensional methods can be used for diagnostic and analytical measurements in the biological, biomedical, and chemical fields.
The Funk Transform as a Penrose Transform T.N. Bailey M.G. Eastwood A.R. Gover L.J. Mason
Gover, Rod
The Funk Transform as a Penrose Transform T.N. Bailey M.G. Eastwood A.R. Gover L.J. Mason December 2, 1999 Abstract The Funk transform is the integral transform from the space of smooth even this transform as a limit in a certain sense of the Penrose transform from C P 2 to C P \\Lambda 2 . We exploit
Transformation of gram positive bacteria by sonoporation
Yang, Yunfeng; Li, Yongchao
2014-03-11T23:59:59.000Z
The present invention provides a sonoporation-based method that can be universally applied for delivery of compounds into Gram positive bacteria. Gram positive bacteria which can be transformed by sonoporation include, for example, Bacillus, Streptococcus, Acetobacterium, and Clostridium. Compounds which can be delivered into Gram positive bacteria via sonoporation include nucleic acids (DNA or RNA), proteins, lipids, carbohydrates, viruses, small organic and inorganic molecules, and nano-particles.
Renormalization Group Transformation for the Wave Function
Hanae El Hattab; Janos Polonyi
1998-03-26T23:59:59.000Z
The problem considered here is the determination of the hamiltonian of a first quantized nonrelativistic particle by the help of some measurements of the location with a finite resolution. The resulting hamiltonian depends on the resolution of the measuring device. This dependence is reproduced by the help of a blocking transformation on the wave function. The systems with quadratic hamiltonian are studied in details. The representation of the renormalization group in the space of observables is identified.
Transformation Strain and Crystallographic Texture in Steels
Kundu, Saurabh
Transformation Strain and Crystallographic Texture in Steels By Saurabh Kundu Darwin College, Cambridge University of Cambridge Department of Materials Science and Metallurgy Pembroke Street, Cambridge CB2 3QZ A dissertation submitted for the degree... , Crystallographic tex- ture of stress-affected bainite, Proceedings of the Royal Society of London A, (submitted). Saurabh Kundu March, 2007 ii Acknowledgments I am grateful to the EPSRC, UK and TATA STEEL, India for funding this project. I would also like to thank...
Residential market transformation: National and regional indicators
Van Wie McGrory, Laura L.; McNamara, Maureen; Suozzo, Margaret
2000-06-01T23:59:59.000Z
A variety of programs are underway to address market barriers to the adoption of energy-efficient residential technologies and practices. Most are administered by utilities, states, or regions that rely on the Energy Star as a consistent platform for program marketing and messaging. This paper reviews regional and national market transformation activities for three key residential end-uses -- air conditioning, clothes washing, and lighting -- characterizing current and ongoing programs; reporting on progress; identifying market indicators; and discussing implications.
An Imaging Fourier Transform Spectrometer for NGST
James R. Graham
1999-07-18T23:59:59.000Z
Due to its simultaneous deep imaging and integral field spectroscopic capability, an Imaging Fourier Transform Spectrograph (IFTS) is ideally suited to the Next Generation Space Telescope (NGST) mission, and offers opportunities for tremendous scientific return in many fields of astrophysical inquiry. We describe the operation and quantify the advantages of an IFTS for space applications. The conceptual design of the Integral Field Infrared Spectrograph (IFIRS) is a wide field (5'.3 x 5'.3) four-port imaging Michelson interferometer.
Perspective Transformation: Analyzing the Outcomes of International Education
Tacey, Krista Diane
2012-10-19T23:59:59.000Z
. These data were used as the foundation for the second phase of the study, which examined the catalysts for, and the process of, transformation through the lens of transformative learning theory. Almost all respondents indicated that the international...
Laser and Electrical Current Induced Phase Transformation of...
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
Current Induced Phase Transformation of In2Se3 Semiconductor thin film on Si(111) . Laser and Electrical Current Induced Phase Transformation of In2Se3 Semiconductor thin film...
Beyond 2020--Strategies and Costs for Transforming the European
Beyond 2020--Strategies and Costs for Transforming the European Energy System* Brigitte Knopf, Yen-Heng FOR TRANSFORMING THE EUROPEAN ENERGY SYSTEM BRIGITTE KNOPF*,Â§Â§ , YEN-HENG HENRY CHEN , ENRICA DE CIAN , HANNAH
1-D Transforms for the Motion Compensation Residual
Kamisli, Fatih
Transforms used in image coding are also commonly used to compress prediction residuals in video coding. Prediction residuals have different spatial characteristics from images, and it is useful to develop transforms that ...
Probing the size and environment induced phase transformation...
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
the size and environment induced phase transformation in CdSe quantum dots. Probing the size and environment induced phase transformation in CdSe quantum dots. Abstract: The...
The role of assessment in a lean transformation
Shan, Raymond S. (Raymond Shing)
2008-01-01T23:59:59.000Z
When starting the journey to become a Lean company, companies commonly face the problem of understanding how to manage a Lean transformation. Often times, the first step in managing a Lean transformation is to understand ...
Understanding urban housing transformations : a case study of Bhogal, India
Benjamin, Solomon J., 1960-
1985-01-01T23:59:59.000Z
This thesis attempts to describe dwelling transformations in the case of Bhogal, New Delhi. It is hoped to clarify the links between socio-economic forces and their resultant impact on physical form, through its transformation. ...
Intelligent Transformer Monitoring System Utilizing Neuro-Fuzzy
Intelligent Transformer Monitoring System Utilizing Neuro-Fuzzy Technique Approach Intelligent Center Intelligent Transformer Monitoring System Utilizing Neuro-Fuzzy Technique Approach Final Project neuro-fuzzy techniques is used for non-linear system identification, output estimation, and fault
Phase Transformations in Binary Colloidal Monolayers
Ye Yang; Lin Fu; Catherine Marcoux; Joshua E. S. Socolar; Patrick Charbonneau; Benjamin B. Yellen
2015-02-10T23:59:59.000Z
Phase transformations can be difficult to characterize at the microscopic level due to the inability to directly observe individual atomic motions. Model colloidal systems, by contrast, permit the direct observation of individual particle dynamics and of collective rearrangements, which allows for real-space characterization of phase transitions. Here, we study a quasi-two-dimensional, binary colloidal alloy that exhibits liquid-solid and solid-solid phase transitions, focusing on the kinetics of a diffusionless transformation between two crystal phases. Experiments are conducted on a monolayer of magnetic and nonmagnetic spheres suspended in a thin layer of ferrofluid and exposed to a tunable magnetic field. A theoretical model of hard spheres with point dipoles at their centers is used to guide the choice of experimental parameters and characterize the underlying materials physics. When the applied field is normal to the fluid layer, a checkerboard crystal forms; when the angle between the field and the normal is sufficiently large, a striped crystal assembles. As the field is slowly tilted away from the normal, we find that the transformation pathway between the two phases depends strongly on crystal orientation, field strength, and degree of confinement of the monolayer. In some cases, the pathway occurs by smooth magnetostrictive shear, while in others it involves the sudden formation of martensitic plates.
Market Transformation: Solar Energy Technologies Program (SETP) (Fact Sheet)
Not Available
2009-10-01T23:59:59.000Z
Fact sheet summarizing the goals and activities of the DOE Solar Energy Technologies Program efforts within its market transformation subprogram.
Blumenfeld, I.; /SLAC; Clayton, C.E.; /UCLA; Decker, F.J.; Hogan, M.J.; /SLAC; Huang, C.; /UCLA; Ischebeck, R.; Iverson, R.H.; /SLAC; Joshi, C.; /UCLA; Katsouleas, T.; /Southern California U.; Kirby, N.; /SLAC; Lu, W.; Marsh, K.A.; Mori, W.B.; /UCLA; Muggli, P.; Oz, E.; /Southern California U.; Siemann, R.H.; Walz, D.R.; /SLAC; Zhou, M.; /UCLA
2012-06-12T23:59:59.000Z
The scaling of the two important figures of merit, the transformer ratio T and the longitudinal electric field E{sub z}, with the peak drive-bunch current I{sub p}, in a nonlinear plasma wakefield accelerator is presented for the first time. The longitudinal field scales as I{sub P}{sup 0.623{+-}0.007}, in good agreement with nonlinear wakefield theory ({approx}I{sub P}{sup 0.5}), while the unloaded transformer ratio is shown to be greater than unity and scales weakly with the bunch current. The effect of bunch head erosion on both parameters is also discussed.
Lemery, F.; Mihalcea, D.; Prokop, C.R.; /Northern Illinois U.; Piot, P.; /Northern Illinois U. /Fermilab
2012-07-08T23:59:59.000Z
In recent years, wakefield acceleration has gained attention due to its high acceleration gradients and cost effectiveness. In beam-driven wakefield acceleration, a critical parameter to optimize is the transformer ratio. It has been shown that current shaping of electron beams allows for enhanced (> 2) transformer ratios. In this paper we present the optimization of the pulse shape of the drive bunch for dielectric-wakefield acceleration.
Transformative Learning Purple Paper Truman State University Summer 2011
Gering, Jon C.
of reflection and critical thinking. Transformative learning, however, focuses specifically on critical self learning involves deep learning but not all deep learning results in transformation. Given that the focus into student participation in transformative learning. Truman Portfolio Results Summary: 86% of gradua
Transformation Series as an Ideographic Character Concept Taran Granta,
Grant, Taran
Transformation Series as an Ideographic Character Concept Taran Granta, * and Arnold G. Klugeb be conceptualized as ``transformation series'', a proposal that is firmly grounded in evolutionary theory and consistent with the method of inferring transformation events as evidence of phylogenetic propinquity
A Transformed Lagged Ensemble Forecasting Technique for Increasing Ensemble Size
Hansens, Jim
A Transformed Lagged Ensemble Forecasting Technique for Increasing Ensemble Size Andrew. R.Lawrence@ecmwf.int #12;Abstract An ensemble-based data assimilation approach is used to transform old en- semble. The impact of the transformations are propagated for- ward in time over the ensemble's forecast period
MAP TRANSFORMATIONS OF GEOGRAPHIC SPACE WALDO RUDOLPH TOBLER
Tobler, Waldo
MAP TRANSFORMATIONS OF GEOGRAPHIC SPACE by WALDO RUDOLPH TOBLER A thesis submitted in partial. If the transformations were dependent only on a factor of proportionality, as in the conversion from miles to kilometers relations, just as isometric transformations of a spherical surface to a plane are not possible. Maps
Anthropogenic transformation of the biomes, 1700 to 2000
Ellis, Erle C.
RESEARCH PAPER Anthropogenic transformation of the biomes, 1700 to 2000 Erle C. Ellis1 *, Kees, Canada ABSTRACT Aim To map and characterize anthropogenic transformation of the terrestrial biosphere anthromes, less than 20% seminatural and only a quarter left wild. Anthropogenic transformation
Transformation of spatial and perturbation derivatives of travel time
Cerveny, Vlastislav
Transformation of spatial and perturbation derivatives of travel time at a general interface and perturbation parameters. We derive the explicit equations for transforming these traveltime derivatives Hamiltonian function and are applicable to the transformation of traveltime derivatives in both isotropic
Model Transformation with Hierarchical Discrete-Event Control
Model Transformation with Hierarchical Discrete- Event Control Thomas Huining Feng Electrical permission. #12;Model Transformation with Hierarchical Discrete-Event Control by Huining Feng B.S. (Nanjing Date Date University of California, Berkeley Spring 2009 #12;Model Transformation with Hierarchical
Finite anticanonical transformations in field-antifield formalism
Igor A. Batalin; Peter M. Lavrov; Igor V. Tyutin
2015-02-19T23:59:59.000Z
We study the role of arbitrary (finite) anticanonical transformations in the field-antifield formalism, and the gauge-fixing procedure based on the use of these transformations. Properties of generating functionals of Green functions subjected to finite anticanonical transformations are considered.
Transforming the advanced lab: Part I -Learning goals Benjamin Zwickl
Colorado at Boulder, University of
Transforming the advanced lab: Part I - Learning goals Benjamin Zwickl , Noah Finkelstein and H. J-division undergraduate level. As part of transforming our senior-level Optics and Modern Physics Lab at the University, 01.40.Fk, 01.50.Qb INTRODUCTION At the University of Colorado Boulder (CU), we are transforming our
Model Transformations Require Formal Semantics Zekai Demirezen, 2
Paris-Sud XI, Université de
Model Transformations Require Formal Semantics 1 Yu Sun, 1 Zekai Demirezen, 2 Tomaz Lukman, 3 limitations of model transformation, with a specific emphasis on model optimization. A primary shortcoming that can be found in many model transformation approaches and tools is the lack of formal semantics
Path-transformations in probability and representation theory
Jordan, Jonathan
Path-transformations in probability and representation theory Neil O'Connell University of Warwick Biane and Philippe Bougerol Neil O'Connell Path-transforms in probability and rep. theory #12;Pitman is a three-dimensional Bessel process. Neil O'Connell Path-transforms in probability and rep. theory #12;The
Model transformation testing: oracle issue Jean-Marie Mottu1
Paris-Sud XI, Université de
Model transformation testing: oracle issue Jean-Marie Mottu1 , Benoit Baudry1 , Yves Le Traon2 1.letraon@telecom-bretagne.eu Abstract The definition of an oracle function for model transformation is challenging because of the very complex nature of models resulting from a transformation. Validating the correctness of an output model
5 The Transformation of Policy Ideas: A Challenge for
Richner, Heinz
103 5 The Transformation of Policy Ideas: A Challenge for Development Research Laurent Goetschel1 by Legro (2000) and exploring the conditions for the transformation of these col- lective policy ideas their expectations on transformation knowledge, from which they expect the greatest added value. While
Model Transformation Testing: The State of the Art
Cordy, James R.
Model Transformation Testing: The State of the Art Gehan M. K. Selim School of Computing, Queen is the notion of auto- mated model transformation, in which models are stepwise refined into more detailed models, and eventually into code. The correctness of transformations is essential to the success of MDD
Pipelined Implementation of the Hough Transform in a Pyramid Multiprocessor
Atiquzzaman, Mohammed
of the transform is its requirement for a large amount of computing power. The computational requirement. 1 Introduction The Hough transform [1] is a powerful technique to detect patterns in imagesPipelined Implementation of the Hough Transform in a Pyramid Multiprocessor M. Atiquzzaman Dept
Transformer Thermal Modeling: Improving Reliability Using Data Quality Control
1 Transformer Thermal Modeling: Improving Reliability Using Data Quality Control Daniel J. Tylavsky--Eventually all large transformers will be dynamically loaded using models updated regularly from field measured data. Models obtained from measured data give more accurate results than models based on transformer
Assessing the reliability of linear dynamic transformer thermal modelling
Assessing the reliability of linear dynamic transformer thermal modelling X. Mao, D.J. Tylavsky and G.A. McCulla Abstract: Improving the utilisation of transformers requires that the hot-spot and top. An alternative method for assessing transformer model reliability is provided. 1 Introduction The maximally
Transform Version 3.4 May, 1999 Edition
Cohen, David
Transform Version 3.4 May, 1999 Edition Copyright Â©1990-1999 Fortner Software LLC and its Licensors. All Rights Reserved. Transform User's Guide and Reference Manual #12;Research Systems, Inc Software and its logo are trademarks of Fortner Software LLC Transform, Noesys, Plot,T3D and the HDF
On the Expressive Power of the Unary Transformation Model
Sandhu, Ravi
we analyze the expressive power of a family of access control models called transformation models [10On the Expressive Power of the Unary Transformation Model Ravi S. Sandhu and Srinivas Ganta Center. The Transformation Model (TRM) was recently introduced [10] in the literature by Sandhu and Ganta. TRM is based
Wavelet Transforms --A Quick Study Ivan W. Selesnick
Selesnick, Ivan
Wavelet Transforms -- A Quick Study Ivan W. Selesnick Polytechnic University Brooklyn, NY September. The wavelet transform has become a useful computational tool for a variety of signal and image processing applications. For example, the wavelet transform is useful for the compression of digital image files; smaller
The Model Morphing Approach -Horizontal Transformations between Business Process
The Model Morphing Approach - Horizontal Transformations between Business Process Models Marion and business to busi- ness interoperability, there is a need for model transformations in the area of business this paper concentrates on transformations of models between different business process modeling languages
Correctness of Program Transformations as a Termination Problem
Schmidt-Schauss, Manfred
Correctness of Program Transformations as a Termination Problem Conrad Rau, David Sabel,sabel,schauss}@ki.informatik.uni-frankfurt.de Abstract. The diagram-based method to prove correctness of program transformations includes the computation of (critical) overlappings be- tween the analyzed program transformation and the (standard) reduction rules
Rational transformations of formal power series Manfred Droste
Zhang, Guo-Qiang
Rational transformations of formal power series Manfred Droste Institut fÂ¨ur Algebra, Technische and investigate two types of transformations for formal power series. We characterize when these transformations for algebraic optimization problems, cf. [17] and in the `max-plus-community' [5]. Regular language operations
Aggressive Test Power Reduction Through Test Stimuli Transformation
Orailoglu, Alex
. Based on this analysis, we develop algorithms for transforming a set of test vectors into power- optimal that are capable of identifying the transformation that is optimal in terms of power and implementing it at minimalAggressive Test Power Reduction Through Test Stimuli Transformation Â£ Ozgur Sinanoglu and Alex
A Source-level MATLAB Transformer for DSP Applications
Chauhan, Arun
Source-level MATLAB Transformer, Arun Chauhan, Indiana University SIP 2004-08-24 #12;Compiler Components-level MATLAB Transformer, Arun Chauhan, Indiana University SIP 2004-08-24 #12;Compiler Components Parser to express transformations of interest · Can specify type-based specializations · Powerful enough to specify
Fourier Transform Heterodyne Spectroscopy of Liquid Interfaces A thesis presented
Mazur, Eric
Fourier Transform Heterodyne Spectroscopy of Liquid Interfaces A thesis presented by Doo Soo Chung Abstract This thesis describes the application of a novel Fourier transform heterodyne spectroscopy of fluid interfaces 3 1.4 Organization of this thesis 5 2 Fourier Transform Heterodyne Spectroscopy 7 2
MICROMACHINED FOURIER TRANSFORM SPECTROMETER ON SILICON OPTICAL BENCH PLATFORM
Park, Namkyoo
MICROMACHINED FOURIER TRANSFORM SPECTROMETER ON SILICON OPTICAL BENCH PLATFORM Kyoungsik Yu1 a miniaturized Fourier transform spectrometer implemented on a silicon optical bench platform. The optical-etching. A spectral resolution of 45 nm near 1550 nm wavelength is demonstrated. Keywords: Fourier transform
Fourier Cosine and Sine Transform on fractal space
Guang-Sheng Chen
2011-10-21T23:59:59.000Z
In this paper, we establish local fractional Fourier Cosine and Sine Transforms on fractal space, considered some properties of local fractional Cosine and Sine Transforms, show applications of local fractional Fourier Cosine and Sine transform to local fractional equations with local fractional derivative.
Ecological Modelling 192 (2006) 143159 Nitrogen transformation and transport modeling
Clement, Prabhakar
model; Transformation; Transport; Nitrification; Denitrification; RT3D 1. Introduction Nitrogen of this paper are to develop a nitro- gen transport and transformation model for saturated groundwater systemsEcological Modelling 192 (2006) 143Â159 Nitrogen transformation and transport modeling
Analysis of photonic Doppler velocimetry data based on the continuous wavelet transform
Liu Shouxian; Wang Detian; Li Tao; Chen Guanghua; Li Zeren; Peng Qixian [Institute of Fluid Physics, China Academy of Engineering Physics, P.O. Box 919-109, Mianyang, Sichuan 621900 (China)
2011-02-15T23:59:59.000Z
The short time Fourier transform (STFT) cannot resolve rapid velocity changes in most photonic Doppler velocimetry (PDV) data. A practical analysis method based on the continuous wavelet transform (CWT) was presented to overcome this difficulty. The adaptability of the wavelet family predicates that the continuous wavelet transform uses an adaptive time window to estimate the instantaneous frequency of signals. The local frequencies of signal are accurately determined by finding the ridge in the spectrogram of the CWT and then are converted to target velocity according to the Doppler effects. A performance comparison between the CWT and STFT is demonstrated by a plate-impact experiment data. The results illustrate that the new method is automatic and adequate for analysis of PDV data.
A. V. Pavlov-Maxorin
2014-10-19T23:59:59.000Z
In article a new class of the odd ore even transforms of Laplace is presented. The class leads to some unforeseeable consequences in direction of the Fourier transforms.The potential of Newton as one of the form of the double Laplace transform is considered too.
Fourier Transform Luminescence Spectroscopy of Semiconductor Thin Films and Devices
Webb, J. D.; Keyes, B. M.; Ahrenkiel, R. K.; Wanlass, M. W.; Ramanathan, K.; Gedvilas, L. M.; Olson, M. R.; Dippo, P.; Jones, K. M.
1999-07-12T23:59:59.000Z
We have been successful in adapting Fourier transform (FT) Raman accessories and spectrophotometers for sensitive measurements of the photoluminescence (PL) spectra of photovoltaic materials and devices. In many cases, the sensitivity of the FT technique allows rapid room-temperature measurements of weak luminescence spectra that cannot be observed using dispersive PL spectrophotometers. We present here the results of a number of studies of material and device quality obtained using FT-luminescence spectroscopy, including insights into bandgap variations, defect and impurity effects, and relative recombination rates. We also describe our approach to extending the range of the FT-Raman spectrophotometer to cover the region from 11,500 to 3700 cm-1, enabling FT-luminescence measurements to be made from 1.42 to 0.46 eV, and our investigation of FT-PL microspectroscopy.
MICROBIAL TRANSFORMATIONS OF RADIONUCLIDES RELEASED FROM NUCLEAR FUEL REPROCESSING PLANTS.
FRANCIS,A.J.
2006-10-18T23:59:59.000Z
Microorganisms can affect the stability and mobility of the actinides U, Pu, Cm, Am, Np, and the fission products Tc, I, Cs, Sr, released from nuclear fuel reprocessing plants. Under appropriate conditions, microorganisms can alter the chemical speciation, solubility and sorption properties and thus could increase or decrease the concentrations of radionuclides in solution and the bioavailability. Dissolution or immobilization of radionuclides is brought about by direct enzymatic action or indirect non-enzymatic action of microorganisms. Although the physical, chemical, and geochemical processes affecting dissolution, precipitation, and mobilization of radionuclides have been investigated, we have only limited information on the effects of microbial processes. The mechanisms of microbial transformations of the major and minor actinides and the fission products under aerobic and anaerobic conditions in the presence of electron donors and acceptors are reviewed.
Sampling Theorem and Discrete Fourier Transform on the Riemann Sphere
Manuel Calixto; Julio Guerrero; Juan Carlos Sánchez-Monreal
2011-09-09T23:59:59.000Z
Using coherent-state techniques, we prove a sampling theorem for Majorana's (holomorphic) functions on the Riemann sphere and we provide an exact reconstruction formula as a convolution product of $N$ samples and a given reconstruction kernel (a sinc-type function). We also discuss the effect of over- and under-sampling. Sample points are roots of unity, a fact which allows explicit inversion formulas for resolution and overlapping kernel operators through the theory of Circulant Matrices and Rectangular Fourier Matrices. The case of band-limited functions on the Riemann sphere, with spins up to $J$, is also considered. The connection with the standard Euler angle picture, in terms of spherical harmonics, is established through a discrete Bargmann transform.
Conductor requirements for high-temperature superconducting utility power transformers
Pleva, E. F. [Waukesha Electric Systems, Waukesha, WI; Mehrotra, V. [Waukesha Electric Systems, Waukesha, WI; Schwenterly, S W [ORNL
2010-01-01T23:59:59.000Z
High-temperature superconducting (HTS) coated conductors in utility power transformers must satisfy a set of operating requirements that are driven by two major considerations-HTS transformers must be economically competitive with conventional units, and the conductor must be robust enough to be used in a commercial manufacturing environment. The transformer design and manufacturing process will be described in order to highlight the various requirements that it imposes on the HTS conductor. Spreadsheet estimates of HTS transformer costs allow estimates of the conductor cost required for an HTS transformer to be competitive with a similarly performing conventional unit.
Fuchs, E.F.; You, Y.; Roesler, D.J. [Univ. of Colorado, Boulder, CO (United States)] [Univ. of Colorado, Boulder, CO (United States)
1999-04-01T23:59:59.000Z
This paper proposes a new model for three-phase transformers with three legs with and without tank under DC bias based on electric and magnetic circuit theory. For the calculation of the nonsinusoidal no-load currents, a combination of time and frequency domains is used. The analysis shows that (1) asymmetric three-phase transformers with three legs generate magnetizing currents with triplen harmonics not being of the zero-sequence type. (2) The wave shapes of the three magnetizing currents of (asymmetric) transformers are dependent on the phase sequence. (3) The magnetic history of transformer magnetization -- due to residual magnetization and hysteresis of the tank -- cannot be ignored if a DC bias is present and the magnetic influence of the tank is relatively strong, e.g., for oil-cooled transformers. (4) Symmetric three-phase transformers with three legs generate no-load currents without triplen harmonics. (5) The effects of DC bias currents (e.g., reactive power demand, harmonic distortion) can be suppressed employing symmetric three-phase transformers with three legs including tank. Measurements corroborate computational results; thus this nonlinear model is valid and accurate.
Transforming the U.S. Energy Infrastructure
Larry Demick
2010-07-01T23:59:59.000Z
The U.S. energy infrastructure is among the most reliable, accessible and economic in the world. On the other hand, the U.S. energy infrastructure is excessively reliant on foreign sources of energy, experiences high volatility in energy prices, does not practice good stewardship of finite indigenous energy resources and emits significant quantities of greenhouse gases (GHG). This report presents a Technology Based Strategy to achieve a full transformation of the U.S. energy infrastructure that corrects these negative factors while retaining the positives.
Transformer current sensor for superconducting magnetic coils
Shen, S.S.; Wilson, C.T.
1985-04-16T23:59:59.000Z
The present invention is a current transformer for operating currents larger than 2kA (two kiloamps) that is capable of detecting a millivolt level resistive voltage in the presence of a large inductive voltage. Specifically, the present invention includes substantially cylindrical primary turns arranged to carry a primary current and substantially cylindrical secondary turns arranged coaxially with and only partially within the primary turns, the secondary turns including an active winding and a dummy winding, the active and dummy windings being coaxial, longitudinally separated and arranged to mutually cancel voltages excited by commonly experienced magnetic fields, the active winding but not the dummy winding being arranged within the primary turns.
Quantum Fourier Transform Over Galois Rings
Yong Zhang
2009-04-16T23:59:59.000Z
Galois rings are regarded as "building blocks" of a finite commutative ring with identity. There have been many papers on classical error correction codes over Galois rings published. As an important warm-up before exploring quantum algorithms and quantum error correction codes over Galois rings, we study the quantum Fourier transform (QFT) over Galois rings and prove it can be efficiently preformed on a quantum computer. The properties of the QFT over Galois rings lead to the quantum algorithm for hidden linear structures over Galois rings.
An informal introduction to program transformation
Hopkins, K.W. [Southwest Baptist Univ., Bolivar, MO (United States)
1994-08-01T23:59:59.000Z
In the summer of 1992, I had the opportunity to participate in a Faculty Research Program, at Argonne National Laboratory. During that time I came in contact with some developments in computer science that were unfamiliar to me as a mathematician. Since most mathematicians have some exposure to computers, but certainly are not computer scientists, I felt it was appropriate to write a paper summarizing my introduction to program transformation. This paper is not meant to be a full explanation of the topic, but an informal introduction for the ``mathematical layman.``
Berkeley Lab's SPOT Suite Transforms Beamline Science
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AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625govInstrumentstdmadapInactiveVisiting the TWP TWPAlumniComplex historianBenefits offorSPOT Suite Transforms
Fluid flow control with transformation media
Urzhumov, Yaroslav A
2011-01-01T23:59:59.000Z
We introduce a new concept for the manipulation of fluid flow around three-dimensional bodies. Inspired by transformation optics, the concept is based on a mathematical idea of coordinate transformations, and physically implemented with anisotropic porous media permeable to the flow of fluids. In two different situations - for an impermeable object situated either in a free-flowing fluid or in a fluid-filled porous medium - we show that the object can be coated with a properly chosen inhomogeneous, anisotropic permeable medium, such as to preserve the streamlines of flow and the pressure distribution that would have existed in the absence of the object. The proposed fluid flow cloak completely eliminates any disturbance of the flow by the object, including the downstream wake. Consequently, the structure helps prevent the onset of turbulence by keeping the flow laminar even above the typical critical Reynolds number for the object of the same shape and size. The cloak also cancels the viscous drag force. This...
Liu, Yangqing, E-mail: liuyq05@gmail.com; Tan, Yi; Xie, Huiqiao; Wang, Wenhao; Gao, Zhe [Department of Engineering Physics, Tsinghua University, Beijing 100084 (China)
2014-07-15T23:59:59.000Z
An improved Hilbert-Huang transform method is developed to the time-frequency analysis of non-stationary signals in tokamak plasmas. Maximal overlap discrete wavelet packet transform rather than wavelet packet transform is proposed as a preprocessor to decompose a signal into various narrow-band components. Then, a correlation coefficient based selection method is utilized to eliminate the irrelevant intrinsic mode functions obtained from empirical mode decomposition of those narrow-band components. Subsequently, a time varying vector autoregressive moving average model instead of Hilbert spectral analysis is performed to compute the Hilbert spectrum, i.e., a three-dimensional time-frequency distribution of the signal. The feasibility and effectiveness of the improved Hilbert-Huang transform method is demonstrated by analyzing a non-stationary simulated signal and actual experimental signals in fusion plasmas.
Xiong, Gang; Joly, Alan G.; Beck, Kenneth M.; Hess, Wayne P.; Cai, Mingdong; Langford, Stephen C.; Dickinson, J T.
2006-02-27T23:59:59.000Z
Photoemission electron microscopy, in conjunction with photoemission spectroscopy, reflectivity, and surface roughness measurements, is used to study the thermally-induced martensitic transformation in a CuZnAI shape memory alloy. Real-time phase transformation is observed as a nearly instantaneous change of photoelectron intensity, accompanied by microstructural deformation and displacement due to the shape memory effect. The difference in the photoelectron intensity before and after the phase transformation is attributed to the concomitant change of work function as measured by photoelectron spectroscopy. Photoemission electron microscopy is shown to be a valuable new technique facilitating the study of phase transformations in shape memory alloys, and provides real-time information on microstructural changes and phase-dependent electronic properties.
FPGA FFT(Fast Fourier Transform) 1 FPGA FFT(Fast Fourier Transform)
Jang, Ju-Wook
trade-offs using high-level performance estimation to obtain energy-efficient designs. We implemented Seon-il Choi Gokul Govindu Viktor K. Prasanna ABSTRACT In this paper, we develop energy efficient designs for the Fast Fourier Transform (FFT) on FPGAs. Architectures for FFT on FPGAs are designed
Structural transformation of nickel hydroxide films during anodic oxidation
Crocker, R.W.; Muller, R.H.
1992-05-01T23:59:59.000Z
The transformation of anodically formed nickel hydroxide/oxy-hydroxide electrodes has been investigated. A mechanism is proposed for the anodic oxidation reaction, in which the reaction interface between the reduced and oxidized phases of the electrode evolves in a nodular topography that leads to inefficient utilization of the active electrode material. In the proposed nodular transformation model for the anodic oxidation reaction, nickel hydroxide is oxidized to nickel oxy-hydroxide in the region near the metal substrate. Since the nickel oxy-hydroxide is considerably more conductive than the surrounding nickel hydroxide, as further oxidation occurs, nodular features grow rapidly to the film/electrolyte interface. Upon emerging at the electrolyte interface, the reaction boundary between the nickel hydroxide and oxy-hydroxide phases spreads laterally across the film/electrolyte interface, creating an overlayer of nickel oxy-hydroxide and trapping uncharged regions of nickel hydroxide within the film. The nickel oxy-hydroxide overlayer surface facilitates the oxygen evolution side reaction. Scanning tunneling microscopy of the electrode in its charged state revealed evidence of 80 {endash} 100 Angstrom nickel oxy-hydroxide nodules in the nickel hydroxide film. In situ spectroscopic ellipsometer measurements of films held at various constant potentials agree quantitatively with optical models appropriate to the nodular growth and subsequent overgrowth of the nickel oxy-hydroxide phase. A two-dimensional, numerical finite difference model was developed to simulate the current distribution along the phase boundary between the charged and uncharged material. The model was used to explore the effects of the physical parameters that govern the electrode behavior. The ratio of the conductivities of the nickel hydroxide and oxy-hydroxide phases was found to be the dominant parameter in the system.
MOLECULAR MECHANISM OF SUPPRESSION OF NEOPLASTIC TRANSFORMATION BY LOW DOSES OF LOW LET RADIATION
J.LESIE REDPATH, PH.D.
2011-03-29T23:59:59.000Z
We are currently funded (9/01-8/04) by the DOE Low Dose Radiation Research Program to examine mechanisms underlying the suppression of neoplastic transformation in vitro by low doses of low LET radiation. For the new studies proposed under Notice 04-21, we intend to follow up on our observation that upregulation of DNA repair may be an important factor and that its importance is dose-dependent. The experimental system will be the human hybrid cell neoplastic transformation assay that we are currently using. We propose to test the following hypothesis: Down-regulation of DNA dsb repair will abrogate the low dose suppression of neoplastic transformation. Using the technique of RNA silencing, it is proposed to test the effect of down-regulation of the two major DNA dsb repair pathways, homologous recombination (HR) and non-homologous end-joining (NHEJ), on the dose response relationship for neoplastic transformation. Based on prior studies, we predict that this will result in abrogation of the suppressive effect at doses in the range 1 to 10 cGy, but not at lower doses. The proposed experiments will also help address the question as to which of the two DNA repair pathways may be the most important in causing suppression of transformation. HR is a pathway that is predominant in S and G2 phase cells and is known to be less error-prone than the NHEJ pathway that is predominant in G1 phase. We hypothesize that down-regulation of HR will result in the most effective abrogation of suppression. An important component of this study will be the determination of the how abrogation of DNA dsb repair impacts the spontaneous transformation frequency, presumably a consequence of endogeneous DNA damage. Experiments will be carried out using partially synchronized populations of cells enriched for G1 and S/G2 respectively. In addition to the endpoint of neoplastic transformation the impact of down-regulation of HR and NHEJ on the formation and disappearance of the DNA dsb marker, gamma-H2AX, will be studied.
Frame transforms, star products and quantum mechanics on phase space
P. Aniello; V. I. Man'ko; G. Marmo
2008-04-10T23:59:59.000Z
Using the notions of frame transform and of square integrable projective representation of a locally compact group $G$, we introduce a class of isometries (tight frame transforms) from the space of Hilbert-Schmidt operators in the carrier Hilbert space of the representation into the space of square integrable functions on the direct product group $G\\times G$. These transforms have remarkable properties. In particular, their ranges are reproducing kernel Hilbert spaces endowed with a suitable 'star product' which mimics, at the level of functions, the original product of operators. A 'phase space formulation' of quantum mechanics relying on the frame transforms introduced in the present paper, and the link of these maps with both the Wigner transform and the wavelet transform are discussed.
Wavelet transforms as solutions of partial differential equations
Zweig, G.
1997-10-01T23:59:59.000Z
This is the final report of a three-year, Laboratory Directed Research and Development (LDRD) project at Los Alamos National Laboratory (LANL). Wavelet transforms are useful in representing transients whose time and frequency structure reflect the dynamics of an underlying physical system. Speech sound, pressure in turbulent fluid flow, or engine sound in automobiles are excellent candidates for wavelet analysis. This project focused on (1) methods for choosing the parent wavelet for a continuous wavelet transform in pattern recognition applications and (2) the more efficient computation of continuous wavelet transforms by understanding the relationship between discrete wavelet transforms and discretized continuous wavelet transforms. The most interesting result of this research is the finding that the generalized wave equation, on which the continuous wavelet transform is based, can be used to understand phenomena that relate to the process of hearing.
Transformer current sensor for superconducting magnetic coils
Shen, Stewart S. (Oak Ridge, TN); Wilson, C. Thomas (Norris, TN)
1988-01-01T23:59:59.000Z
A transformer current sensor having primary turns carrying a primary current for a superconducting coil and secondary turns only partially arranged within the primary turns. The secondary turns include an active winding disposed within the primary turns and a dummy winding which is not disposed in the primary turns and so does not experience a magnetic field due to a flow of current in the primary turns. The active and dummy windings are wound in opposite directions or connected in series-bucking relationship, and are exposed to the same ambient magnetic field. Voltages which might otherwise develop in the active and dummy windings due to ambient magnetic fields thus cancel out. The resultant voltage is purely indicative of the rate of change of current flowing in the primary turns.
Energy Resolution with the Lorentz integral transform
Winfried Leidemann
2015-03-24T23:59:59.000Z
A brief outline of the Lorentz Integral Transform (LIT) method is given. The method is well established and allows to treat reactions into the many-body continuum with bound-state like techniques. The energy resolution that can be achieved is studied by means of a simple two-body reaction. From the discussion it will become clear that the LIT method is an approach with a controlled resolution and that there is no principle problem to even resolve narrow resonances in the many-body continuum. As an example the isoscalar monopole resonance of 4He is considered. The importance of the choice of a proper basis for the expansion of the LIT states is pointed out. Employing such a basis a width of 180(70) keV is found for the 4He isoscalar monopole resonance when using a simple central nucleon-nucleon potential model.
Radon Transform in Finite Dimensional Hilbert Space
M. Revzen
2012-02-06T23:59:59.000Z
Novel analysis of ?nite dimensional Hilbert space is outlined. The approach bypasses general, inherent, di?culties present in handling angular variables in ?nite dimensional problems: The ?nite dimensional, d, Hilbert space operators are underpinned with ?nite geometry which provide intuitive perspective to the physical operators. The analysis emphasizes a central role for projectors of mutual unbiased bases (MUB) states, extending thereby their use in ?nite dimensional quantum mechanics studies. Interrelation among the Hilbert space operators revealed via their (?nite) dual a?ne plane geometry (DAPG) underpinning are displayed and utilized in formulating the ?nite dimensional ubiquitous Radon transformation and its inverse illustrating phase space-like physics encoded in lines and points of the geometry. The ?nite geometry required for our study is outlined.
Transformation of Networks through Cognitive Approaches
Nair, T R Gopalakrishnan; Sooda, Kavitha
2010-01-01T23:59:59.000Z
The growth in data traffic and the increased demand for quality of service has meant current network systems need to be more efficient. The introduction of improved routing systems to meet the increasing demand and varied protocols to accommodate various scales of challenges in network efficiency has further complicated the operations. This means a better mode of intelligence had to be infused into networking for smoother operations and better autonomic features. Cognitive networks are defined and analyzed in this angle. They are identified to have the potential to deal with the future user related quality and efficiency of service at optimized levels. The cognitive elements of system like perception, learning, planning, reasoning and decision forming can enable the systems to be more aware of their environment and offer better services. These approaches are expected to transform the mode of operation of future networks.
Linear Response Theory 15.0.6 Fourier Transform
Palffy-Muhoray, Peter
Chapter 15 Linear Response Theory 15.0.6 Fourier Transform A function of time f(t) which transform of f(t). Note that if f(t) = (t) such that (t)dt = 1, then F() = 1 2 , and (t) = 1 2 - eit d 85 #12;86 CHAPTER 15. LINEAR RESPONSE THEORY 15.0.7 Convolution Consider f(t) with transform F() and h
Application and protection considerations of large phase shifting transformers
Sen, P.K. (Colorado Univ., Denver, CO (USA). Dept. of Electrical and Computer Engineering); Craig, B.R. (Black and Veatch Engineers/Architects, Denver, CO (US))
1989-01-01T23:59:59.000Z
A phase shifting transformer is used to control the real power flow in a transmission system where loop flow causes problems. The cost of this type of transformer may be several million dollars. Due to complexity of the design of these units, the protective relaying requires special attention. This paper discusses the theory of operation, modelling and construction of phase shifting transformers. Fundamentals of protection scheme design for this special equipment are discussed.
Undecimated Wavelet Transforms for Image De-noising
Gyaourova, A; Kamath, C; Fodor, I K
2002-11-19T23:59:59.000Z
A few different approaches exist for computing undecimated wavelet transform. In this work we construct three undecimated schemes and evaluate their performance for image noise reduction. We use standard wavelet based de-noising techniques and compare the performance of our algorithms with the original undecimated wavelet transform, as well as with the decimated wavelet transform. The experiments we have made show that our algorithms have better noise removal/blurring ratio.
Improved technique for one-way transformation of information
Cooper, J.A.
1987-05-11T23:59:59.000Z
Method and apparatus are provided for one-way transformation of data according to multiplication and/or exponentiation modulo a prime number. An implementation of the invention permits the one way residue transformation, useful in encryption and similar applications, to be implemented by n-bit computers substantially with no increase in difficulty or complexity over a natural transformation thereby, using a modulus which is a power of two. 9 figs.
Beam-induced graphitic carbon cage transformation from sumanene aggregates
Fujita, Jun-ichi, E-mail: fujita@bk.tsukuba.ac.jp; Tachi, Masashi; Murakami, Katsuhisa [Institute of Applied Physics, University of Tsukuba, Tsukuba 305-8573 (Japan); Tsukuba Research Center for Interdisciplinary Materials Science (TIMS), Tsukuba 305-8573 (Japan); Sakurai, Hidehiro; Morita, Yuki; Higashibayashi, Shuhei [Research Center of Integrative Molecular Systems, Institute for Molecular Science, Myodaiji, Okazaki 444-8787 (Japan); Takeguchi, Masaki [Transmission Electron Microscopy Station, National Institute for Materials Science, Tsukuba 305-0047 (Japan)
2014-01-27T23:59:59.000Z
We found that electron-beam irradiation of sumanene aggregates strongly enhanced their transformation into a graphitic carbon cage, having a diameter of about 20?nm. The threshold electron dose was about 32 mC/cm{sup 2} at 200?keV, but the transformation is still induced at 20?keV. The transformation sequence suggested that the cage was constructed accompanied by the dynamical movement of the transiently linked sumanene molecules in order to pile up inside the shell. Thus, bond excitation in the sumanene molecules rather than a knock-on of carbon atoms seems to be the main cause of the cage transformation.
Sandia National Laboratories: DOE EERE Fuel Cell Market Transformation...
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EERE Fuel Cell Market Transformation activity Patent Awarded for the Fuel Cell Mobile Light On August 28, 2013, in Center for Infrastructure Research and Innovation (CIRI), CRF,...
Transformation Formula of the "2nd" Order Mock Theta Function
Kazuhiro Hikami
2006-04-04T23:59:59.000Z
We give a transformation formula for the ``2nd order'' mock theta function which was recently proposed in connection with the quantum invariant for the Seifert manifold.
Abstract Coordinate Transforms in Kinematic Changeable Sets and their Properties
Ya. I. Grushka
2015-04-14T23:59:59.000Z
One of the fundamental postulates of the special relativity theory is existence of a single system of universal coordinate transforms for inertial reference frames, that is coordinate transforms, which are uniquely determined by space-time coordinates of a material point. In this paper the abstract mathematical theory of coordinate transforms in kinematic changeable sets is developed. In particular it is proved the formal possibility of existence of kinematics, which do not allow universal coordinate transforms. Such kinematics may be applied for simulation the evolution of physical systems under the condition of hypothesis on existence of particle-dependent velocity of light.
Saturable inductor and transformer structures for magnetic pulse compression
Birx, Daniel L. (Londonderry, NH); Reginato, Louis L. (Orinda, CA)
1990-01-01T23:59:59.000Z
Saturable inductor and transformer for magnetic compression of an electronic pulse, using a continuous electrical conductor looped several times around a tightly packed core of saturable inductor material.
A Derivation of Three-Dimensional Inertial Transformations
Francois Goy
1997-07-02T23:59:59.000Z
The derivation of the transformations between inertial frames made by Mansouri and Sexl is generalised to three dimensions for an arbitrary direction of the velocity. Assuming lenght contraction and time dilation to have their relativistic values, a set of transformations kinematically equivalent to special relativity is obtained. The ``clock hypothesis'' allows the derivation to be extended to accelerated systems. A theory of inertial transformations maintaining an absolute simultaneity is shown to be the only one logically consistent with accelerated movements. Algebraic properties of these transformations are discussed. Keywords: special relativity, synchronization, one-way velocity of light, ether, clock hypothesis.
THE COMPUTER SIMULATION OF MARTENSITIC TRANSFORMATIONS IN IDEALIZED SYSTEMS
Chen, Sheree Hsiao-Ru
2012-01-01T23:59:59.000Z
by the problem of accomodating the strain associated withby the problem of accomodating the strain as so- ciated withis the possibility of accomodating the transformation strain
POLARIZATION-INVARIANT DIRECTIONAL CLOAKING BY TRANSFORMATION OPTICS
Agarwal, Krishna; Chen, Xudong; Hu, Li; Liu, Hongyu; Uhlmann, Gunther
2011-01-01T23:59:59.000Z
cloaking with the SHS lining,” Optics Express, Vol. 15, No.and free- space cloak,” Optics Express, Vol. 17, 19947–P. Sheng, “Transformation optics and metamaterials,” Nature
The Color-Flavor Transformation and Lattice QCD
B. Schlittgen; T. Wettig
2002-09-09T23:59:59.000Z
We present the color-flavor transformation for gauge group SU(N_c) and discuss its application to lattice QCD.
agrobacterium rhizogenes transformed: Topics by E-print Network
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that allows to specify binary relations on graphs Drewes, Frank 51 Constructors transformers Computer Technologies and Information Sciences Websites Summary: Proc. AGTIVE'99,...
Benefits of Using Mobile Transformers and Mobile Substations...
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Benefits of Using Mobile Transformers and Mobile Substations for Rapidly Restoring Electrical Service: a Report to the United States Congress Pursuant to Section 1816 of the Energy...
antiferroelectric polymorphic transformation: Topics by E-print...
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that allows to specify binary relations on graphs Drewes, Frank 39 Constructors transformers Computer Technologies and Information Sciences Websites Summary: Proc. AGTIVE'99,...
arsenic exposure transforms: Topics by E-print Network
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that allows to specify binary relations on graphs Drewes, Frank 93 Constructors transformers Computer Technologies and Information Sciences Websites Summary: Proc. AGTIVE'99,...
agrobacterium rhizogenes-mediated transformation: Topics by E...
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that allows to specify binary relations on graphs Drewes, Frank 49 Constructors transformers Computer Technologies and Information Sciences Websites Summary: Proc. AGTIVE'99,...
agrobacterium-mediated plant transformation: Topics by E-print...
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that allows to specify binary relations on graphs Drewes, Frank 42 Constructors transformers Computer Technologies and Information Sciences Websites Summary: Proc. AGTIVE'99,...
anaerobic microbial transformations: Topics by E-print Network
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that allows to specify binary relations on graphs Drewes, Frank 66 Constructors transformers Computer Technologies and Information Sciences Websites Summary: Proc. AGTIVE'99,...
artificial transformation products: Topics by E-print Network
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HypertextHypermedia: General Paris-Sud XI, Universit de 34 Safety of power transformers, power supplies, reactors and similar products - Part 1: General requirements and...
abelson virus transformation: Topics by E-print Network
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that allows to specify binary relations on graphs Drewes, Frank 27 Constructors transformers Computer Technologies and Information Sciences Websites Summary: Proc. AGTIVE'99,...
ash formation transformations: Topics by E-print Network
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that allows to specify binary relations on graphs Drewes, Frank 44 Constructors transformers Computer Technologies and Information Sciences Websites Summary: Proc. AGTIVE'99,...
amorphous-to-quasicrystalline phase transformation: Topics by...
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
Soojoon Lee 2000-03-20 7 Differential Protection for Arbitrary Three-Phase Power Transformers. Open Access Theses and Dissertations Summary: ??This thesis describes how to...
agrobacterium-mediated genetic transformation: Topics by E-print...
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
that allows to specify binary relations on graphs Drewes, Frank 53 Constructors transformers Computer Technologies and Information Sciences Websites Summary: Proc. AGTIVE'99,...
Transformer Addition Project near Page, Coconino County, Arizona
Broader source: Energy.gov (indexed) [DOE]
changing insulators, and replacement of poles, circuit breakers, conductors, transformers, and crossarms." c. Regulatory Requirements in 10 CFR 1021.410 (b): 1. The proposed...
agrobacterium mediated transformation: Topics by E-print Network
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that allows to specify binary relations on graphs Drewes, Frank 68 Constructors transformers Computer Technologies and Information Sciences Websites Summary: Proc. AGTIVE'99,...
arsenical-associated malignant transformation: Topics by E-print...
Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)
that allows to specify binary relations on graphs Drewes, Frank 14 Constructors transformers Computer Technologies and Information Sciences Websites Summary: Proc. AGTIVE'99,...
attending unintended transformations: Topics by E-print Network
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that allows to specify binary relations on graphs Drewes, Frank 55 Constructors transformers Computer Technologies and Information Sciences Websites Summary: Proc. AGTIVE'99,...
angiomatoid nodular transformation: Topics by E-print Network
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that allows to specify binary relations on graphs Drewes, Frank 15 Constructors transformers Computer Technologies and Information Sciences Websites Summary: Proc. AGTIVE'99,...
Planar Optical Waveguide Coupler Transformers for High-Power...
Broader source: Energy.gov (indexed) [DOE]
PLANAR OPTICAL WAVEGUIDE COUPLER TRANSFORMERS FOR HIGH-POWER SOLAR ENERGY COLLECTION AND TRAMSMISSION Nobuhiko P. Kobayashi Baskin School of Engineering, University of California...
adsorptive heat transformation: Topics by E-print Network
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that allows to specify binary relations on graphs Drewes, Frank 69 Constructors transformers Computer Technologies and Information Sciences Websites Summary: Proc. AGTIVE'99,...
adenovirus expressing transforming: Topics by E-print Network
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that allows to specify binary relations on graphs Drewes, Frank 80 Constructors transformers Computer Technologies and Information Sciences Websites Summary: Proc. AGTIVE'99,...
alloy phase transformations: Topics by E-print Network
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obtained or harmonics will be more. For Multiphase power transmission system multiphase transformers are needed. In the multiphase power transmission and multiphase rectifier...
Dominican Republic-Fast-Track Development of TransformativeClimate...
Fast-Track Development of Transformative Climate-Compatible Development Plans and Building of Regional and Local Capacities Jump to: navigation, search Logo: Dominican...
2015 Peer Review Presentations-Demonstration and Market Transformation...
2015 Peer Review Presentations-Demonstration and Market Transformation The Bioenergy Technologies Office hosted its 2015 Project Peer Review on March 23-27, 2015, at the...
analyte ion transformations: Topics by E-print Network
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to Build Data Sets for Data Mining, Data & Knowledge Engineering (DKE), 2014, Elsevier. DBMS 12 Ordonez, Carlos 4 Discrete analytical Ridgelet Transform Philippe CARR , Eric...
Automatically Transforming GNU C Source Code Christopher Dahn, Spiros Mancoridis
Mancoridis, Spiros
Automatically Transforming GNU C Source Code Christopher Dahn, Spiros Mancoridis Department of Computer Science Drexel University, Philadelphia, PA, USA {chris.dahn}@computer.org {mancors
On Fourier transforms of radial functions and distributions
Loukas Grafakos; Gerald Teschl
2013-02-18T23:59:59.000Z
We find a formula that relates the Fourier transform of a radial function on $\\mathbf{R}^n$ with the Fourier transform of the same function defined on $\\mathbf{R}^{n+2}$. This formula enables one to explicitly calculate the Fourier transform of any radial function $f(r)$ in any dimension, provided one knows the Fourier transform of the one-dimensional function $t\\to f(|t|)$ and the two-dimensional function $(x_1,x_2)\\to f(|(x_1,x_2)|)$. We prove analogous results for radial tempered distributions.
Quantum mechanical perspectives and generalization of the fractional Fourier Transformation
Jun-Hua Chen; Hong-Yi Fan
2014-08-23T23:59:59.000Z
Fourier and fractional-Fourier transformations are widely used in theoretical physics. In this paper we make quantum perspectives and generalization for the fractional Fourier transformation (FrFT). By virtue of quantum mechanical representation transformation and the method of integration within normal ordered product (IWOP) of operators, we find the key point for composing FrFT, and reveal the structure of FrFT. Following this procedure, a full family of generalized fractional transformations are discovered with the usual FrFT as one special case. The eigen-functions of arbitrary GFrT are derived explicitly.
Relation between quantum tomography and optical Fresnel transform
Hong-yi Fan; Li-yun Hu
2008-01-13T23:59:59.000Z
Corresponding to optical Fresnel transformation characteristic of ray transfer matrix elements (A;B;C;D); AD-BC = 1, there exists Fresnel operator F(A;B;C;D) in quantum optics, we show that under the Fresnel transformation the pure position density |x>_rs,rs__rs,rs_Fresnel quadrature phase is the tomography (Radon transform of Wigner function), and the tomogram of a state |phi> is just the wave function of its Fresnel transformed state F|phi>, i.e. rs_= . Similarly, we find F|p>_rs,rs_
Verified integrity properties for safe approximate program transformations
Kim, Deokhwan
Approximate computations (for example, video, audio, and image processing, machine learning, and many scientific computations) have the freedom to generate a range of acceptable results. Approximate program transformations ...
Aluminum fluoride inhibition of glucocorticoid receptor inactivation and transformation
Housley, P.R. (Univ. of South Carolina School of Medicine, Columbia (USA))
1990-04-10T23:59:59.000Z
Fluoride, in the presence of aluminum ions, reversibly inhibits the temperature-mediated inactivation of unoccupied glucocorticoid receptors in cytosol preparations from mouse L cells. The effect is concentration-dependent, with virtually complete stabilization of specific glucocorticoid-binding capacity at 2 mM fluoride and 100 microM aluminum. These concentrations of aluminum and fluoride are ineffective when used separately. Aluminum fluoride also stabilizes receptors toward inactivation by gel filtration and ammonium sulfate precipitation. Aluminum fluoride prevents temperature-dependent transformation of steroid-receptor complexes to the DNA-binding state. Aluminum fluoride does not inhibit calf intestine alkaline phosphatase, and unoccupied receptors inactivated by this enzyme in the presence of aluminum fluoride can be completely reactivated by dithiothreitol. The effects of aluminum fluoride are due to stabilization of the complex between the glucocorticoid receptor and the 90-kDa mammalian heat-shock protein hsp90, which suggests that aluminum fluoride interacts directly with the receptor. Endogenous thermal inactivation of receptors in cytosol is not accompanied by receptor dephosphorylation. However, inactivation is correlated with dissociation of hsp90 from the unoccupied receptor. These results support the proposal that hsp90 is required for the receptor to bind steroid and dissociation of hsp90 is sufficient to inactivate the unoccupied receptor.
Engineering the Martensitic Transformation Hysteresis of Ni-Rich NiTi Alloys
Franco, Brian Eelan
2014-12-18T23:59:59.000Z
, or 3 directions in Figure 1.2 [18]. 7 To minimize the shear strain that necessarily accompanies the transformation shape change, martensite takes a twinned, self-accomodating morphology. These twin related, martensite variant pairs nucleate... for the one-way shape memory effect begins with the material in a martensitic state; that is, multivariant, twinned, and self-accomodated. On the application of sufficient stress the processes of detwinning and reorientation occur; martensite variants...
Hong-yi Fan; Li-yun Hu
2008-08-21T23:59:59.000Z
We prove a new theorem about the relationship between optical field Wigner function's Radon transform and optical Fresnel transform of the field, i.e., when an input field Phi(x') propagates through an optical [D(-B)(-C)A] system, the energy density of the output field is equal to the Radon transform of the Wigner function of the input field, where the Radon transform parameters are D,B. We prove this theorem in both spatial-domain and frequency-domain.
Transformation of chlorinated phenols and anilines in the presence of humic acid
Park, J.W.; Dec, J.; Kim, J.E.; Bollag, J.M.
2000-02-01T23:59:59.000Z
Incubations of chlorinated phenols and anilines with oxidoreductive catalysts (peroxidase, laccase, tyrosinase, and birnessite) in the presence of humic acid led to oligomerization of the substrates or their binding to organic matter. The effect of humic acid on the overall transformation depended on the substrate, type of catalyst, and the concentration and source of humic acid. At low humic acid concentrations, the transformation of 4-chlorophenol (4-CP) was enhanced, but at higher concentrations of humic acid, no further enhancement occurred. The transformation of 4-chloroaniline (4-CA) was only slightly affected after the addition of humic acid. In experiments with {sup 14}C-labeled substrates, 4-CP was mainly bound to humic acid and formed few oligomers, whereas 4-CA was largely subject to oligomerization with less binding to humic acid. Binding and oligomerization of 4-CP did not change with increasing concentration of humic acid, but with 4-CA, binding increased and oligomerization decreased. It appears that nucleophilic binding of 4-CA depended largely on the availability of carbonyl and quinone groups in humic acid and, therefore, the distribution of the transformed substrate between oligomers and organic matter greatly depended on the source of humic acid.
FPGA based image processing with R-fuctions and the curvelet transform
Wisinger, John L.
2003-01-01T23:59:59.000Z
"a trous" wavelet 2. Radon. a. The purpose of the radon transform . b. The radon transform 8 8 8 9 9 9 10 10 11 12 12 12 13 14 14 17 17 17 18 CHAPTER Page c. The inverse radon transform. . . . . . . . . . d. The digital radon... transform using the Fourier domain . . e. The finite radon transform. . . . . . . . . . . f. The inverse finite radon transform. . . . . . . 3. Ridgelet. . . . . . . . a. The purpose of the ridgelet transform. . . . . b. The continuous ridgelet...
Ensemble transform Kalman-Bucy filters Javier Amezcua 1
Reich, Sebastian
1 Ensemble transform Kalman-Bucy filters Javier Amezcua 1 jamezcua@atmos.umd.edu Kayo Ide 1 2 3 4 Meteorological Society. #12;2 Abstract Two recent works have adapted the Kalman-Bucy filter into an ensemble of these alternatives are discussed. Finally, the performance of our ensemble transform Kalman-Bucy implementations
Combined Loop Transformation and Hierarchy Allocation for Data Reuse Optimization
Cong, Jason "Jingsheng"
transformation framework was established based on parametric integer linear programming [6-8]. Data dependenceCombined Loop Transformation and Hierarchy Allocation for Data Reuse Optimization Jason Cong, Peng Zhang, Yi Zou Computer Science Department University of California, Los Angeles Los Angeles, CA 90095
Hawking-Hayward quasi-local energy under conformal transformations
Angus Prain; Vincenzo Vitagliano; Valerio Faraoni; Marianne Lapierre-Léonard
2015-01-13T23:59:59.000Z
We derive a formula describing the transformation of the Hawking-Hayward quasi-local energy under a conformal rescaling of the spacetime metric. A known formula for the transformation of the Misner-Sharp-Hernandez mass is recovered as a special case.
A note on large gauge transformations in double field theory
Usman Naseer
2015-04-22T23:59:59.000Z
We give a detailed proof of the conjecture by Hohm and Zwiebach in double field theory. This result implies that their proposal for large gauge transformations in terms of the Jacobian matrix for coordinate transformations is, as required, equivalent to the standard exponential map associated with the generalized Lie derivative along a suitable parameter.
Bell Transform, Teleportation Operator and Teleportation-Based Quantum Computation
Yong Zhang; Kun Zhang
2014-07-16T23:59:59.000Z
We introduce the concept of the Bell transform to represent known quantum gates in the literature, which are a unitary basis transformation from the product basis to the Bell states or the Greenberger-Horne-Zeilinger (GHZ) states. The algebraic structure of the four dimensional Bell transform has been studied systematically in this paper and we point out that it may be not a Clifford gate. The representative examples of the four dimensional Bell transform are verified as maximally entangling Clifford gates and some of them are recognized as parity-preserving gates or matchgates or Yang--Baxter gates. We define the teleportation operator in terms of the four dimensional Bell transform and apply it to the reformulation of the fault-tolerant construction of single-qubit gates and two-qubit gates in teleportation-based quantum computation. The algebraic structure of the higher dimensional Bell transform is also included and representative examples for it are verified as multi-qubit Clifford gates. Our research suggests that the Bell transform may play important roles in quantum information and computation as a new type of quantum transform.
Obtaining the right large power transformer for a hydro plant
Clemen, D.M. [Harza Engineering Company, Chicago, IL (United States)
1995-07-01T23:59:59.000Z
Transformer efficiency and reliability are important factors in determining the productivity of a hydroelectric generating plant. A well-supervised testing program can help plant owners and engineers improve the quality of equipment installed at their plant. This paper addresses such a program as applied to the selection of the generator step-up, or main power, transformer at a hydroelectric generating station.
Analysis of Censored Environmental Data with Box-Cox Transformations
District of Columbia, University of the
the likelihood function over a fixed power transformation set. To estimate the mean vector and the covariance in selecting the correct power transformation and the coverage rate of the confidence region under several in an environment (e.g., air, water, soil) is often used as a direct measure of dose. However, in most cases
Multiple DC, single AC converter with a switched DC transformer
Donnelly, Matthew K. (Kennewick, WA); Hammerstrom, Donald J. (West Richland, WA)
1997-01-01T23:59:59.000Z
The invention is an improvement of the PASC inverter, wherein the improvements include the reduction from two shorting gates per transformer to one shorting gate per transformer and replacement of active control of the shorting gate with passive control of the shorting gate. Further advantages are obtained through the use of anti-parallel gate sets.
WAVELET TRANSFORMS FOR SYSTEM IDENTIFICATION AND ASSOCIATED PROCESSING CONCERNS
Kareem, Ahsan
WAVELET TRANSFORMS FOR SYSTEM IDENTIFICATION AND ASSOCIATED PROCESSING CONCERNS Tracy L. Kijewski1 , Student Member ASCE and Ahsan Kareem2 , Member ASCE ABSTRACT The time-frequency character of wavelet-domain transform, particularly for the popular Morlet wavelet. Unfortunately, in prior applications of wavelet
MAPPING THE WAVELET TRANSFORM ONTO SILICON: THE DYNAMIC TRANSLINEAR APPROACH
Serdijn, Wouter A.
MAPPING THE WAVELET TRANSFORM ONTO SILICON: THE DYNAMIC TRANSLINEAR APPROACH Sandro A. P. Haddad.haddad,w.a.serdijn}@its.tudelft.nl ABSTRACT In this paper, an analog implementation of the Wavelet Transform (WT) is presented. The circuit widely used for frequency analysis among wavelet functions. From simulations, it is demonstrated that we
Wavelet transforms for functions with values in Lebesgue spaces
Kaiser, Cornelia
Wavelet transforms for functions with values in Lebesgue spaces Cornelia Kaiser UniversitÃ¤t Karlsruhe (TH), Germany Wavelets XI, San Diego August 1, 2005 in cooperation with Lutz Weis #12;Outline Introduction Continuous wavelet transform Further results and references Outline 1 Introduction 2 Continuous
PERIODIC WAVELET TRANSFORMS AND PERIODICITY JOHN J. BENEDETTO AND G
Benedetto, John J.
PERIODIC WAVELET TRANSFORMS AND PERIODICITY DETECTION JOHN J. BENEDETTO #3; AND G OTZ E. PFANDER y Key words. Continuous wavelet transform, epileptic seizure prediction, periodicity detection algorithm, optimal generalized Haar wavelets, wavelet frames on Z. AMS subject classi#12;cations. 42C99, 42C
Transformer requirements for the year 2000. Final report, December 1979
Not Available
1980-06-01T23:59:59.000Z
The principal objective of this program was to determine the design parameters required for transformers of the year 2000. The approach to meeting this objective was to determine the changes which may occur in transmission and distribution systems over the next twenty years, and how these changes might affect design parameters of distribution and power transformers. Emphasis was placed on domestic requirements, although the impact of international practices was factored into the overall requirements for transformers. Possible investigations that could help transformer designers meet the long term technical requirements of future transformers were also identified. The principal conclusions of this study were: 1200 kV transmission could be in service by the late 1980's and it is essential to develop 1200 kV transformers for these systems; transformer manufacturers must be prepared to supply higher MVA ratings at all voltage levels; there will be a strong demand for low-loss, minimum cost transformers; and environmental/safety, reliability, and size reduction considerations will increase in importance. (LLL)
Identifying Transformer Incipient Events for Maintaining Distribution System Reliability
such as fuse and relay protection. Over the years, various incipient fault detection techniques to prevent outages and reduce down times. Hence protecting a critical infrastructure. The faults that occur within the transformer protection zone are internal faults. Transformer internal faults can be divided
Rules + Strategies for Transforming Lazy Functional Logic Programs
Vidal, GermÃ¡n
narrowing, the optimal and complete operational principle for mod- ern declarative languages which integrate the power of the system by taking on in our setting two well-known transformation strategies (compositionRules + Strategies for Transforming Lazy Functional Logic Programs MarÂ´ia Alpuente a Moreno
Code Transformations for Energy-Efficient Device Management
Bianchini, Ricardo
transformations that increase device idle times and inform the operating system about the length of each upcoming, or both. Recent advances in fast, low-power microproces- sors and their use in battery-operated computersCode Transformations for Energy-Efficient Device Management Taliver Heath, Eduardo Pinheiro, Jerry
One-to-many Data Transformations through Data Mappers
Lopes, AntÃ³nia
the optimization gains. Key words: Data Warehousing, ETL, Data Mapper operator, Query optimization, Relational expressive power [AU79], RA alone cannot be used to specify many important data transformations [LSS96One-to-many Data Transformations through Data Mappers Paulo Carreira a,b , Helena Galhardas a , Ant
Rephasing: A Transformation Technique for the Manipulation of Timing Constraints
Potkonjak, Miodrag
is that phases can be cho- sen to optimize the algorithm for metrics such as area and power. Moreover, rephasing Algorithm transformations have emerged as impor- tant optimization tools in the process of high-level synthe. The advantage of rephasing is that phase values can be chosen to transform and optimize the algo- rithm
Retiming and Resynthesis with Sweep Are Complete for Sequential Transformation
Zhou, Hai
is complete for all sequential transformations (on steady states). It has been shown that the sweep operation and registers. Retiming is a powerful sequential optimization step that can be applied to sequential designsRetiming and Resynthesis with Sweep Are Complete for Sequential Transformation Hai Zhou Department
Spherical radon transforms and mathematical problems of thermoacoustic tomography
Ambartsoumian, Gaik
2009-06-02T23:59:59.000Z
The spherical Radon transform (SRT) integrates a function over the set of all spheres with a given set of centers. Such transforms play an important role in some newly developing types of tomography as well as in several areas of mathematics...
Cloaking a Sensor via Transformation Optics Allan Greenleaf
Uhlmann, Gunther
LM11852 REV IEW CO PY N O T FO R D ISTRIBU TIO N Cloaking a Sensor via Transformation Optics Allan. As one application, we describe how to use transformation optics to hide sensors in the cloaked region optics cloaking at positive frequency, besides rendering the cloaked region invisible to detection
Computer Science at Kent Transformation in HaRe
Kent, University of
- strates the facilities HaRe provides for program transformation by implementing a deforestation to autonomously optimise a program. One of them is deforestation, a transformation that eliminates intermediate data structures. In this paper, we present a partial implementation of the warm fusion deforestation
Mobius Transformations, Power Diagrams, Lombardi Drawings, and Soap Bubbles
Eppstein, David
MÂ¨obius Transformations, Power Diagrams, Lombardi Drawings, and Soap Bubbles David Eppstein Euro a novel type of power diagram for disks in the plane that is invariant under MÂ¨obius transformations Using For points outside circle, power = (positive) length of tangent segment For points inside circle, power = -1
A Class-Object Model for Program Transformations
Chiba, Shigeru
class-object model makes power- ful transformations not only of the compiler experts but alsoA Class-Object Model for Program Transformations Doctoral Program in Engineering University. The technology that enables the reuse of larger software components have become available with the emergence
Nonlinear Fourier Analysis The Direct & Inverse Scattering Transforms
Christov, Ivan C.
Nonlinear Fourier Analysis The Direct & Inverse Scattering Transforms for the Kortewegde Vries by ONR/NRL funding. Nonlinear Fourier Analysis p.1/15 #12;Background & Introduction (I) 1895: Korteweg equations known as the Scattering Transform. Nonlinear Fourier Analysis p.2/15 #12;Background
Imaging Fourier transform spectroscopy with multi-aperture telescopes
Fienup, James R.
Imaging Fourier transform spectroscopy with multi-aperture telescopes Samuel T. Thurman and James R Hanover St., Palo Alto, CA 94304 Abstract: Fourier spectroscopy can be performed with multi Society of America OCIS codes: (300.6300) Spectroscopy, Fourier transforms; (110.6770) Telescopes; (120
Wavelets and Fourier Transforms, WISM453 Part 1: Fourier Theory
Sleijpen, Gerard
Wavelets and Fourier Transforms, WISM453 Part 1: Fourier Theory G.L.G. Sleijpen Department of Mathematics Utrecht University August 18, 2008 1 #12;i Preface Fourier Theory belongs to the basic who works in such a field should feel comfortable with Fourier transforms. But Fourier The- ory also
LOCAL FOURIER TRANSFORMS AND RIGIDITY FOR SPENCER BLOCH AND H
Bloch, Spencer
LOCAL FOURIER TRANSFORMS AND RIGIDITY FOR D-MODULES SPENCER BLOCH AND H #19; EL #18; ENE ESNAULT To Armand Borel, in memoriam Abstract. Local Fourier transforms, analogous to the `-adic local Fourier if a certain in#12;nitesimal rigidity condition is satis#12;ed. As in [12], the argument uses local Fourier
The BPM to UML activity diagram transformation using XSLT
The BPM to UML activity diagram transformation using XSLT Ondrej Macek1 and Karel Richta1,2 1. Keywords: BPM, BPMN, UML, model transformation, XSLT 1 Introduction The Business Process Model (BPM of describing and improving business processes. The BPM can be described in various notations: in Business
Multiple DC, single AC converter with a switched DC transformer
Donnelly, M.K.; Hammerstrom, D.J.
1997-05-20T23:59:59.000Z
The invention is an improvement of the PASC inverter, wherein the improvements include the reduction from two shorting gates per transformer to one shorting gate per transformer and replacement of active control of the shorting gate with passive control of the shorting gate. Further advantages are obtained through the use of anti-parallel gate sets. 14 figs.
Transforming A Linear Algebra Core to An FFT Accelerator
Batory, Don
Transforming A Linear Algebra Core to An FFT Accelerator Ardavan Pedram, John McCalpin, Andreas the modifications required to transform a highly-efficient, specialized linear algebra core into an efficient engine computations and propose extensions to the micro-architecture of the baseline linear algebra core. Along
Development of large-capacity gas-insulated transformer
Takahashi, E.; Tanaka, K. [Tokyo Electric Power Co., Ltd. (Japan)] [Tokyo Electric Power Co., Ltd. (Japan); Toda, K.; Ikeda, M.; Teranishi, T.; Inaba, M.; Yanari, T. [Toshiba Corp., Kawasaki (Japan)] [Toshiba Corp., Kawasaki (Japan)
1996-04-01T23:59:59.000Z
Concentrations of population and business activities result in high electricity demand in urban areas. This requires the construction of large-capacity underground substations. Oilless, non-flammable and non-explosive equipment is recommended for underground substations. Therefore, several types of large-capacity gas-insulated transformer have been developed. Because the gas forced cooling type was considered to be available up to approximately 60 MVA, all of these gas-insulated transformers are liquid cooled. But the liquid cooling type has the disadvantage of a complex structure for liquid cooling. For this reason, the authors have been studying the development of a simple design for a gas forced cooling, large-capacity gas-insulated transformer. This paper discusses research and development of cooling and insulation technology for a large-capacity gas-insulated transformer and the development of a 275 kV, 300 MVA gas-insulated transformer.
High-voltage air-core pulse transformers
Rohwein, G. J.
1981-01-01T23:59:59.000Z
General types of air core pulse transformers designed for high voltage pulse generation and energy transfer applications are discussed with special emphasis on pulse charging systems which operate up to the multi-megavolt range. The design, operation, dielectric materials, and performance are described. It is concluded that high voltage air core pulse transformers are best suited to applications outside the normal ranges of conventional magnetic core transformers. In general these include charge transfer at high power levels and fast pulse generation with comparatively low energy. When properly designed and constructed, they are capable of delivering high energy transfer efficiency and have demonstrated superior high voltage endurance. The principal disadvantage of high voltage air core transformers is that they are not generally available from commercial sources. Consequently, the potential user must become thoroughly familiar with all aspects of design, fabrication and system application before he can produce a high performance transformer system. (LCL)
Analogue Transformations in Physics and their Application to Acoustic
García-Meca, C; Barceló, C; Jannes, G; Sánchez-Dehesa, J; Martínez, A
2013-01-01T23:59:59.000Z
Transformation optics has shaped up a revolutionary electromagnetic design paradigm, enabling scientists to build astonishing devices such as invisibility cloaks. Unfortunately, the application of transformation techniques to other branches of physics is often constrained by the structure of the field equations. We develop here a complete transformation method using the idea of analogue spacetimes. The method is general and could be considered as a new paradigm for controlling waves in different branches of physics, from acoustics in quantum fluids to graphene electronics. As an application, we derive an "analogue transformation acoustics" formalism that naturally allows the use of transformations mixing space and time or involving moving fluids, both of which were impossible with the standard approach. To demonstrate the power of our method, we give an explicit design of a spacetime compressor for acoustic waves and a carpet cloak for a moving aircraft.
Analogue Transformations in Physics and their Application to Acoustic
C. García-Meca; S. Carloni; C. Barceló; G. Jannes; J. Sánchez-Dehesa; A. Martínez
2013-06-21T23:59:59.000Z
Transformation optics has shaped up a revolutionary electromagnetic design paradigm, enabling scientists to build astonishing devices such as invisibility cloaks. Unfortunately, the application of transformation techniques to other branches of physics is often constrained by the structure of the field equations. We develop here a complete transformation method using the idea of analogue spacetimes. The method is general and could be considered as a new paradigm for controlling waves in different branches of physics, from acoustics in quantum fluids to graphene electronics. As an application, we derive an "analogue transformation acoustics" formalism that naturally allows the use of transformations mixing space and time or involving moving fluids, both of which were impossible with the standard approach. To demonstrate the power of our method, we give an explicit design of a spacetime compressor for acoustic waves and a carpet cloak for a moving aircraft.
COMPOSE-HPC: A Transformational Approach to Exascale
Bernholdt, David E [ORNL; Allan, Benjamin A. [Sandia National Laboratories (SNL); Armstrong, Robert C. [Sandia National Laboratories (SNL); Chavarria-Miranda, Daniel [Pacific Northwest National Laboratory (PNNL); Dahlgren, Tamara L. [Lawrence Livermore National Laboratory (LLNL); Elwasif, Wael R [ORNL; Epperly, Tom [Lawrence Livermore National Laboratory (LLNL); Foley, Samantha S [ORNL; Hulette, Geoffrey C. [Sandia National Laboratories (SNL); Krishnamoorthy, Sriram [Pacific Northwest National Laboratory (PNNL); Prantl, Adrian [Lawrence Livermore National Laboratory (LLNL); Panyala, Ajay [Louisiana State University; Sottile, Matthew [Galois, Inc.
2012-04-01T23:59:59.000Z
The goal of the COMPOSE-HPC project is to 'democratize' tools for automatic transformation of program source code so that it becomes tractable for the developers of scientific applications to create and use their own transformations reliably and safely. This paper describes our approach to this challenge, the creation of the KNOT tool chain, which includes tools for the creation of annotation languages to control the transformations (PAUL), to perform the transformations (ROTE), and optimization and code generation (BRAID), which can be used individually and in combination. We also provide examples of current and future uses of the KNOT tools, which include transforming code to use different programming models and environments, providing tests that can be used to detect errors in software or its execution, as well as composition of software written in different programming languages, or with different threading patterns.
Smart Grid - Transforming Power System Operations
Widergren, Steven E.; Kirkham, Harold
2010-04-28T23:59:59.000Z
Abstract—Electric power systems are entering a new realm of operations. Large amounts of variable generation tax our ability to reliably operate the system. Couple this with a greater reliance on the electricity network to serve consumer demand that is likely to rise significantly even as we drive for greater efficiency. Trade-offs between energy and environmental needs will be constantly negotiated, while a reliable supply of electricity needs even greater assurance in a world where threats of disruption have risen. Smart grid capabilities are being proposed to help address the challenges confronting system operations. This paper reviews the impact of smart grid functionality on transforming power system operations. It explores models for distributed energy resources (DER – generation, storage, and load) that are appearing on the system. It reviews the evolving nature of electricity markets to deal with this complexity and a change of emphasis on signals from these markets to affect power system control. Smart grid capabilities will also impact reliable operations, while cyber security issues must be addressed as a culture change that influences all system design, implementation, and maintenance. Lastly, the paper explores significant questions for further research and the need for a simulation environment that supports such investigation and informs deployments to mitigate operational issues as they arise.
Wedge assembly for electrical transformer component spacing
Baggett, Franklin E. (Paducah, KY); Cage, W. Franklin (LaCenter, KY)
1991-01-01T23:59:59.000Z
A wedge assembly that is easily inserted between two surfaces to be supported thereby, and thereafter expanded to produce a selected spacing between those surfaces. This wedge assembly has two outer members that are substantially identical except that they are mirror images of each other. Oppositely directed faces of these of these outer members are substantially parallel for the purpose of contacting the surfaces to be separated. The outer faces of these outer members that are directed toward each other are tapered so as to contact a center member having complementary tapers on both faces. A washer member is provided to contact a common end of the outer members, and a bolt member penetrates this washer and is threadably received in a receptor of the center member. As the bolt member is threaded into the center member, the center member is drawn further into the gap between the outer members and thereby separates these outer members to contact the surfaces to be separated. In the preferred embodiment, the contacting surfaces of the outer member and the center member are provided with guide elements. The wedge assembly is described for use in separating the secondary windings from the laminations of an electrical power transformer.
FINAL REPORT: Transformational electrode drying process
Claus Daniel, C.; Wixom, M. (A123 Systems, Inc.)
2013-12-19T23:59:59.000Z
This report includes major findings and outlook from the transformational electrode drying project performance period from January 6, 2012 to August 1, 2012. Electrode drying before cell assembly is an operational bottleneck in battery manufacturing due to long drying times and batch processing. Water taken up during shipment and other manufacturing steps needs to be removed before final battery assembly. Conventional vacuum ovens are limited in drying speed due to a temperature threshold needed to avoid damaging polymer components in the composite electrode. Roll to roll operation and alternative treatments can increase the water desorption and removal rate without overheating and damaging other components in the composite electrode, thus considerably reducing drying time and energy use. The objective of this project was the development of an electrode drying procedure, and the demonstration of processes with no decrease in battery performance. The benchmark for all drying data was an 80°C vacuum furnace treatment with a residence time of 18 – 22 hours. This report demonstrates an alternative roll to roll drying process with a 500-fold improvement in drying time down to 2 minutes and consumption of only 30% of the energy compared to vacuum furnace treatment.
Large signal nonlinear model of anisotropic transformers for nonsinusoidal operation
Fuchs, E.F.; Masoum, M.A.S.
1989-09-01T23:59:59.000Z
Single-phase, nonlinear, transformers with anisotropic iron cores are modeled for (non)sinusoidal excitations and (non)linear loads. The {lambda}-i characteristics are computed based on design data through a quasi three-dimensional magnetic field analysis. This analysis includes the effects of the interlamination and butt-to-butt air gaps, the exchange of flux between any two neighboring anisotropic laminations and the influences of the end windings. It is shown that the B-H characteristics of cross- and with-grain iron core samples, obtained from Epstein measurements, must be modified for their application to anisotropic iron-cores. Therefore, these characteristics are used to compute through a quasi three-dimensional magnetic field analysis appropriate B-H characteristics for anisotropic iron core samples. Based on such newly defined B-H characteristics the {lambda}-i functions representing the saturation-dependent leakage inductances are calculated from design data. 17 refs., 136 figs., 24 tabs.
Model for a transformer-coupled toroidal plasma source
Rauf, Shahid; Balakrishna, Ajit; Chen Zhigang; Collins, Ken [Applied Materials, Inc., 974 E. Arques Avenue, Sunnyvale, California 94085 (United States)
2012-01-15T23:59:59.000Z
A two-dimensional fluid plasma model for a transformer-coupled toroidal plasma source is described. Ferrites are used in this device to improve the electromagnetic coupling between the primary coils carrying radio frequency (rf) current and a secondary plasma loop. Appropriate components of the Maxwell equations are solved to determine the electromagnetic fields and electron power deposition in the model. The effect of gas flow on species transport is also considered. The model is applied to 1 Torr Ar/NH{sub 3} plasma in this article. Rf electric field lines form a loop in the vacuum chamber and generate a plasma ring. Due to rapid dissociation of NH{sub 3}, NH{sub x}{sup +} ions are more prevalent near the gas inlet and Ar{sup +} ions are the dominant ions farther downstream. NH{sub 3} and its by-products rapidly dissociate into small fragments as the gas flows through the plasma. With increasing source power, NH{sub 3} dissociates more readily and NH{sub x}{sup +} ions are more tightly confined near the gas inlet. Gas flow rate significantly influences the plasma characteristics. With increasing gas flow rate, NH{sub 3} dissociation occurs farther from the gas inlet in regions with higher electron density. Consequently, more NH{sub 4}{sup +} ions are produced and dissociation by-products have higher concentrations near the outlet.
Formulation of quantum mechanics in terms of gauge transformations
S. R. Vatsya
2014-05-29T23:59:59.000Z
Formulations of quantum mechanics incorporating the Weyl gauge transformations are studied in this article and developed further. In the process, impact of the method of observation on its outcome is interpreted in terms of the assigned gauges by incorporating properties of the corresponding experimental arrangement in defining them. Further, the assigned gauge is explicitly incorporated in the Feynman path integral formulation of quantum mechanics. The resulting wavefunction, which is not uniquely defined, represents a gauge equivalence class. The representative wavefunction is still obtained by the original path integral method. Methods to obtain the pertinent information about the assigned gauges supplementing the representative wavefunction are discussed. The probability density is shown to be a uniquely defined gauge invariant quantity but at the expense of some information describing the observable effects contained in gauge factors. In the standard quantum mechanics, a wavefunction is assumed to be defined within a phase factor while the probability density is phase-independent, paralleling these results. Also, the path integral method is used to deduce the Klein-Gordon equation for the representative wavefunction in the Riemannian spaces in a more streamlined manner than the previous derivations.
Liquid chromatography/Fourier transform IR spectrometry interface flow cell
Johnson, Charles C. (Fairfield, OH); Taylor, Larry T. (Blacksburg, VA)
1986-01-01T23:59:59.000Z
A zero dead volume (ZDV) microbore high performance liquid chromatography (.mu.HPLC)/Fourier transform infrared (FTIR) interface flow cell includes an IR transparent crystal having a small diameter bore therein through which a sample liquid is passed. The interface flow cell further includes a metal holder in combination with a pair of inner, compressible seals for directly coupling the thus configured spectrometric flow cell to the outlet of a .mu.HPLC column end fitting to minimize the transfer volume of the effluents exiting the .mu.HPLC column which exhibit excellent flow characteristics due to the essentially unencumbered, open-flow design. The IR beam passes transverse to the sample flow through the circular bore within the IR transparent crystal, which is preferably comprised of potassium bromide (KBr) or calcium fluoride (CaF.sub.2), so as to minimize interference patterns and vignetting encountered in conventional parallel-plate IR cells. The long IR beam pathlength and lensing effect of the circular cross-section of the sample volume in combination with the refractive index differences between the solvent and the transparent crystal serve to focus the IR beam in enhancing sample detection sensitivity by an order of magnitude.
Liquid chromatography/Fourier transform IR spectrometry interface flow cell
Johnson, C.C.; Taylor, L.T.
1985-01-04T23:59:59.000Z
A zero dead volume (ZDV) microbore high performance liquid chromatography (..mu.. HPLC)/Fourier transform infrared (FTIR) interface flow cell includes an IR transparent crystal having a small diameter bore therein through which a sample liquid is passed. The interface flow cell further includes a metal holder in combination with a pair of inner, compressible seals for directly coupling the thus configured spectrometric flow cell to the outlet of a ..mu.. HPLC column end fitting to minimize the transfer volume of the effluents exiting the ..mu.. HPLC column which exhibit excellent flow characteristics due to the essentially unencumbered, open-flow design. The IR beam passes transverse to the sample flow through the circular bore within the IR transparent crystal, which is preferably comprised of potassium bromide (KBr) or calcium fluoride (CaF/sub 2/), so as to minimize interference patterns and vignetting encountered in conventional parallel-plate IR cells. The long IR beam pathlength and lensing effect of the circular cross-section of the sample volume in combination with the refractive index differences between the solvent and the transparent crystal serve to focus the IR beam in enhancing sample detection sensitivity by an order of magnitude.
Ch. 13 Transform Coding My Coverage is Different from the Book
Fowler, Mark
1 Ch. 13 Transform Coding My Coverage is Different from the Book #12;2 Overview Transform. Block Diagram of Transform Coding "Fig. A" Often (but not always!) done on a block-by-block basis: · Non-Overlapped Blocks (most common) · Overlapped Blocks #12;3 Transform as Linear Operator We'll view transforms
H. C. So Page 1 Semester B 2011-2012 z Transform
So, Hing-Cheung
H. C. So Page 1 Semester B 2011-2012 z Transform Chapter Intended Learning Outcomes: (i) Understanding the relationship between transform and the Fourier transform for discrete-time signals (ii) Understanding the characteristics and properties of transform (iii) Ability to compute transform and inverse
Landy, N I; Smith, D R
2010-01-01T23:59:59.000Z
We introduce an approach to the design of three-dimensional transformation optical (TO) media based on a generalized quasi-conformal mapping approach. The generalized quasi-conformal TO (QCTO) approach enables the design of media that can, in principle, be broadband and low-loss, while controlling the propagation of waves with arbitrary angles of incidence and polarization. We illustrate the method in the design of a three-dimensional "carpet" ground plane cloak and of a flattened Luneburg lens. Ray-trace studies provide a confirmation of the performance of the QCTO media, while also revealing the limited performance of index-only versions of these devices.
A full-scale simulation of streaming electrification in a large core-form transformer winding
Brubaker, M.A.; Nelson, J.K.
1995-05-01T23:59:59.000Z
A network based approach for streaming electrification developed elsewhere and experimentally calibrated is extended to a full-scale transformer structure. This model offers several improvements on the basic macroscopic electrification methodology first proposed by Roach and Templeton. A complete range of flow conditions from laminar to fully turbulent are considered and the effects of power frequency electric fields are included. In addition, the influence of temperature is recognized and static potentials are calculated based on an appropriate leakage current matrix. A complete section of an eight-pass core-form transformer winding has been examined under a variety of conditions. The results show that the size of the structure is critical and demonstrate the impact of entering charge from the cooling system. Static potentials in excess of 10 kV are shown to be possible under proper conditions with the potential distribution being highly dependent upon energization, flow rate and temperature.
Vacuum Studies of a Prototype Composite Coil Dewar for HTSC Transformers
Schwenterly, S W [ORNL; Zhang, Y. [Oak Ridge National Laboratory (ORNL); Pleva, E. F. [Waukesha Electric Systems, Waukesha, WI; Rufer, M. [Scorpius Space Launch Co.
2010-01-01T23:59:59.000Z
Oak Ridge National Laboratory (ORNL) is collaborating with Waukesha Electric Systems (WES) to develop a high-temperature superconducting (HTSC) utility power transformer with primary and secondary coils cooled by liquid nitrogen. Since the vacuum-insulated cryogenic coil dewar surrounds the magnetic core limb and cannot form a shorted turn, non-conductive materials are required. Two test vessels and a small prototype dewar have been fabricated by Scorpius Space Launch Company with epoxy/fiberglass composites, using their proprietary PRESSURMAXX vessel technology. The effects of pumping time, bakeout temperature, and cryogenic vessel temperature on vacuum outgassing rates have been investigated. Outgassing rates of the individual materials used in vessel construction have also been measured. The results will be scaled up to determine the required pumping capacity for a full-size 25-MVA commercial transformer dewar.
Vacuum Studies of a Prototype Composite Coil Dewar for HTSC Transformers
Schwenterly, S W [ORNL] [ORNL; Zhang, Y. [Oak Ridge National Laboratory (ORNL)] [Oak Ridge National Laboratory (ORNL); Pleva, Ed [Waukesha Electric Systems, Waukesha, WI] [Waukesha Electric Systems, Waukesha, WI; Rufer, M. [Scorpius Space Launch Co.] [Scorpius Space Launch Co.
2010-01-01T23:59:59.000Z
Oak Ridge National Laboratory (ORNL) is collaborating with Waukesha Electric Systems (WES) to develop a high-temperature superconducting (HTSC) utility power transformer with primary and secondary coils cooled by liquid nitrogen. Since the vacuuminsulated cryogenic coil dewar surrounds the magnetic core limb and cannot form a shorted turn, non-conductive materials are required. Two test vessels and a small prototype dewar have been fabricated by Scorpius Space Launch Company with epoxy/fiberglass composites, using their proprietary PRESSURMAXX vessel technology. The effects of pumping time, bakeout temperature, and cryogenic vessel temperature on vacuum outgassing rates have been investigated. Outgassing rates of the individual materials used in vessel construction have also been measured. The results will be scaled up to determine the required pumping capacity for a full-size 25-MVA commercial transformer dewar.
Aoki, K. (Hiroshima Univ., Higashihiroshima (JP)); Kuwabara, H. (Kinki Univ., Kure (JP)); Satoh, T. (Hiroshima Univ., Higashihiroshima (JP)); Kanezashi, M. (Aichi Institute of Technology, Toyota (JP))
1988-10-01T23:59:59.000Z
This paper presents a systematic and practical algorithm for load balancing of transformers and feeders by automatic sectionalizing switch operation in large scale distribution systems of radial type. The algorithm is developed by extending an approximation algorithm for load transfer of desired two transformers. The algorithm proposed here is applicable to operations not only in normal state, but also in scheduled and failure outage states. Computational experience on a real large scale system has indicated that the algorithm is valid and effective for practical operations.
Generalized discrete orbit function transforms of affine Weyl groups
Tomasz Czy?ycki; Ji?í Hrivnák
2014-11-14T23:59:59.000Z
The affine Weyl groups with their corresponding four types of orbit functions are considered. Two independent admissible shifts, which preserve the symmetries of the weight and the dual weight lattices, are classified. Finite subsets of the shifted weight and the shifted dual weight lattices, which serve as a sampling grid and a set of labels of the orbit functions, respectively, are introduced. The complete sets of discretely orthogonal orbit functions over the sampling grids are found and the corresponding discrete Fourier transforms are formulated. The eight standard one-dimensional discrete cosine and sine transforms form special cases of the presented transforms.
Janis-Newman algorithm: simplifications and gauge field transformation
Harold Erbin
2015-02-16T23:59:59.000Z
The Janis-Newman algorithm is an old but very powerful tool to generate rotating solutions from static ones through a set of complex coordinate transformations. Several solutions have been derived in this way, including solutions with gauge fields. However, the transformation of the latter was so far always postulated as an ad hoc result. In this paper we propose a generalization of the procedure, extending it to the transformation of the gauge field. We also present a simplification of the algorithm due to G. Giampieri. We illustrate our prescription on the Kerr-Newman solution.
Particle contamination levels in oil-filled large power transformers
Oommen, T.V.; Petrie, E.M.
1983-05-01T23:59:59.000Z
A study of particle levels in transformer oil was conducted, covering about 200 samples taken from field and factory units. Factory samples were included to determine a relative base condition on which to compare field data. Particle distribution curves show size and count relationship in transformers. The particles were studied also by Atomic Absorption Spectroscopy to measure the content of iron, copper and other common metals expected. Particle analysis can supplement more standard laboratory techniques to judge the condition of oil in operating power transformers. The diagnostic value of such analysis, especially in determining pump performance problems, is illustrated with examples.
Finite BRST-antiBRST Transformations in Generalized Hamiltonian Formalism
Pavel Yu. Moshin; Alexander A. Reshetnyak
2014-10-15T23:59:59.000Z
We introduce the notion of finite BRST-antiBRST transformations for constrained dynamical systems in the generalized Hamiltonian formalism, both global and field-dependent, with a doublet $\\lambda_{a}$, $a=1,2$, of anticommuting Grassmann parameters and find explicit Jacobians corresponding to these changes of variables in the path integral. It turns out that the finite transformations are quadratic in their parameters. Exactly as in the case of finite field-dependent BRST-antiBRST transformations for the Yang--Mills vacuum functional in the Lagrangian formalism examined in our previous paper [arXiv:1405.0790[hep-th
Calculation of material properties and ray tracing in transformation media
Schurig, D; Smith, D R
2006-01-01T23:59:59.000Z
Complex and interesting electromagnetic behavior can be found in spaces with non-flat topology. When considering the properties of an electromagnetic medium under an arbitrary coordinate transformation an alternative interpretation presents itself. The transformed material property tensors may be interpreted as a different set of material properties in a flat, Cartesian space. We describe the calculation of these material properties for coordinate transformations that describe spaces with spherical or cylindrical holes in them. The resulting material properties can then implement invisibility cloaks in flat space. We also describe a method for performing geometric ray tracing in these materials which are both inhomogeneous and anisotropic in their electric permittivity and magnetic permeability.
Learning Model Transformations from Examples using FCA: One for All or All for One?
Paris-Sud XI, UniversitÃ© de
of these transformations consists in completely or partially learning them. MTBE (Model Transformation By in model driven en- gineering. An innovative approach called Model Transformation By Example (MTBE) [12
Finer, John J.
Abstract Successful transformation of plant tissue using Agrobacterium relies on several factors including bacterial infection, host recognition, and transformation competency of the target tissue particle bombardment, Agrobacterium-mediated transformation of this tissue has not been demonstrated. We
ENHANCING THE FREQUENCY OF SOMATIC EMBRYOGENESIS FOLLOWING AGROBACTERIUM-MEDIATED TRANSFORMATION OF
Korban, Schuyler S.
ENHANCING THE FREQUENCY OF SOMATIC EMBRYOGENESIS FOLLOWING AGROBACTERIUM-MEDIATED TRANSFORMATION embryogenic explants along with the location of embryogenesis- and transformation-competent cells embryogenesis on immature cotyledons following Agrobacterium tumefaciens-mediated transformation and selection
The Fractional Fourier Transform and Its Application to Fault Signal Analysis
Duan, Xiao
2012-07-16T23:59:59.000Z
To a large extent mathematical transforms are applied on a signal to uncover information that is concealed, and the capability of such transforms is valuable for signal processing. One such transforms widely used in this area, is the conventional...
Kutil, Rade
Parallel Wavelet Transforms on Multiprocessors Topic 12: Architectures and Algorithms for Vision several issues relevant for parallel wavelet transforms and their possible implications on the choice compare pyramidal wavelet transform, wavelet packet decomposition, and the 'a trous algorithm. 1
Hussain, Z.
2013-01-01T23:59:59.000Z
Physical Review Letters FOURIER-TRANSFORM ANALYSIS OF NORMAL0 eV. (b) Magnitude of the Fourier transform IF(r)l accord·3. l.94A and V 5 eV. Fourier-transform derived distances ZF
Hussain, Z.
2013-01-01T23:59:59.000Z
Academy of Sciences USA FOURIER-TRANSFORM ANALYSIS OF NORMALeV. (b) Magnitude of the Fourier transform IF(r)l accordingV 0 = 5 eV. Figure 3. Fourier-transform derived distances ZF
THERMOSTATICS AND KINETICS OF TRANSFORMATIONS IN PU-BASED ALLOYS
Turchi, P; Kaufman, L; Liu, Z
2006-06-30T23:59:59.000Z
CALPHAD assessment of the thermodynamic properties of a series of Pu-based alloys is briefly presented together with some results on the kinetics of phase formation and transformations in Pu-Ga alloys.
Driving a lean transformation using a six sigma improvement process
Krishnan, Satish, 1974-
2004-01-01T23:59:59.000Z
Successive transformations within manufacturing have brought great efficiencies to producers and lower costs to consumers. With the advents of interchangeable parts between 1800 and 1850 in small arms manufacturing (Hounshell, ...
Transformed materials : a material research center in Milan, Italy
Skerry, Nathaniel S. (Nathaniel Standish), 1971-
2002-01-01T23:59:59.000Z
[Transformed Materials] is an exploration into today's design methodologies of architecture production. The emergence of architectural form is questioned in relation to the temporal state of design intent and the physical ...