Готові списки джерел за темами / Energy distortion

Добірка наукової літератури з теми "Energy distortion"

Автор: Grafiati
Опубліковано: 14 березня 2023

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Статті в журналах з теми "Energy distortion"

1

Chluba, Jens, Andrea Ravenni, and Sandeep Kumar Acharya. "Thermalization of large energy release in the early Universe." Monthly Notices of the Royal Astronomical Society 498, no. 1 (July 23, 2020): 959–80. http://dx.doi.org/10.1093/mnras/staa2131.

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ABSTRACT Spectral distortions of the cosmic microwave background (CMB) provide a unique tool for learning about the early phases of cosmic history, reaching deep into the primordial Universe. At redshifts z ≲ 106, thermalization processes become inefficient and existing limits from COBE/FIRAS imply that no more than Δρ/ρ ≲ 6 × 10−5 ($95{{\ \rm per\ cent}}$ c.l.) of energy could have been injected into the CMB. However, at higher redshifts, when thermalization is efficient, the constraint weakens and Δρ/ρ ≃ 0.01−0.1 could in principle have occurred. Existing computations for the evolution of distortions commonly assume Δρ/ρ ≪ 1 and thus become inaccurate in this case. Similarly, relativistic temperature corrections become relevant for large energy release, but have previously not been modelled as carefully. Here, we study the evolution of distortions and the thermalization process after single large energy release at z ≳ 105. We show that for large distortions the thermalization efficiency is significantly reduced and that the distortion visibility is sizeable to much earlier times. This tightens spectral distortions constraints on low-mass primordial black holes with masses $M_{\rm PBH}\lesssim 2 \times 10^{11}\, {\rm g}$. Similarly, distortion limits on the amplitude of the small-scale curvature power spectrum at wavenumbers $k\gtrsim 10^4\, {\rm Mpc}^{-1}$ and short-lived decaying particles with lifetimes $t_X\lesssim 10^7\, {\rm s}$ are tightened, however, these still require a more detailed time-dependent treatment. We also briefly discuss the constraints from measurements of the effective number of relativistic degrees of freedom and light element abundances and how these complement spectral distortion limits.
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2

Wang, Q. C., Xiao Dong Hu, W. Li, and Ju Long Yuan. "Numerical Simulation of Machining Distortion of Residually Stressed Aircraft Aluminum Components." Key Engineering Materials 315-316 (July 2006): 235–38. http://dx.doi.org/10.4028/www.scientific.net/kem.315-316.235.

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The presence of residual stress in aircraft aluminum components can give rise to distortion after machining. Excessive distortion may result in the rejection of a part or the need for costly and time-consuming rework prior to placement in service. The purpose of this research was to develop a methodology for the prediction of machining-induced distortions of residually stressed aircraft aluminum components. Numerical simulation results show that the magnitude of machining distortion is strongly related to the square root of Stain Energy Density W or Stress Range σ . The experimental results demonstrate good agreement with the predicted machining distortions of 7075T73 bulkheads. It included that the original residual stress in the blocks of aircraft aluminum component is one of key factors to cause machining distortion.
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3

Cousins, W. T., K. K. Dalton, T. T. Andersen, and G. A. Bobula. "Pressure and Temperature Distortion Testing of a Two-Stage Centrifugal Compressor." Journal of Engineering for Gas Turbines and Power 116, no. 3 (July 1, 1994): 567–73. http://dx.doi.org/10.1115/1.2906857.

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Altitude pressure and temperature inlet distortion testing of the two-stage centrifugal compressor in the T800-LHT-800 engine is described. The test setup and the testing techniques are reviewed and the results of the test are presented. The generation of classical 180 deg patterns of both pressure and temperature distortion is discussed. Temperature distortion was created using a hydrogen burner system while pressure distortion was created in the classical manner, using screens. Results of both individual and combined temperature and pressure distortions in both opposed and concurrent patterns are shown.
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4

Peng, Chong, Jingjing Zhang, and Zhenyu Xu. "Does Price Distortion Affect Energy Efficiency? Evidence from Dynamic Spatial Analytics of China." Energies 15, no. 24 (December 16, 2022): 9576. http://dx.doi.org/10.3390/en15249576.

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Despite market-oriented reforms, China’s energy sector is subject to energy price distortions, which are believed to be a crucial determinants of energy efficiency in China. This paper investigates the impact of energy price distortions on energy efficiency in China from the perspective of spatial correlation. Using the nonradial directional distance function approach, we first estimate the provincial-level energy efficiency in China. Paying attention to spatial correlation among the provinces of China, in stage two, we identify the determinants of energy efficiency. Our empirical results suggest that price distortions have a significant impact on energy efficiency in China. This impact holds when the cross-region effect is considered, i.e., besides its own energy price distortion, a region’s energy efficiency is also correlated to the adjacent provinces’ energy price distortions. Furthermore, we found that the levels of energy efficiencies in adjacent provinces are highly correlated. This spatial relationship can be decomposed into the ‘spillover effect’ and ‘warning effect’. These two effects work together, determining the spatial relationship among the province-level energy efficiencies.
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5

Lu, Hengfan, Jiachao Peng, and Xiangyi Lu. "Do Factor Market Distortions and Carbon Dioxide Emissions Distort Energy Industry Chain Technical Efficiency? A Heterogeneous Stochastic Frontier Analysis." Energies 15, no. 17 (August 24, 2022): 6154. http://dx.doi.org/10.3390/en15176154.

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China’s high-quality economic development is hampered by market distortions, and promises to achieve peak carbon emissions by 2030, meaning that its economic growth faces serious environmental constraints. We use a heterogeneous stochastic frontier model to analyze the impact of factor market distortions and carbon dioxide emissions on economic growth, and to evaluate the Chinese energy industry’s chain technical efficiency under the influence of factor distortions and carbon dioxide emissions. Finally, the counterfactual measurement method is used to calculate the factor market distortions and loss of the energy industry chain technology efficiency as a result of carbon dioxide emissions. The main research results show that China’s energy technology efficiency is 0.959, and the average energy industry chain technical efficiency for each region from the highest to the lowest is east (0.961), center (0.957), northeast (0.955), and west (0.950). The space for efficiency improvement is 3.6377%, 4.5151%, 4.7669%, and 5.2521%, respectively. Factor market distortion and carbon dioxide emissions are the main sources of losses of energy industry chain technical efficiency. Although the energy industry chain technical efficiency is subject to market factors, the structural factors caused by sustainable efficiency are more obvious. In the case of factor market distortions and carbon dioxide emissions, China’s energy industry chain technical efficiency slowly increased from 0.952 in 2000 to 0.964 in 2016. By reducing the degree of factor market distortion, China’s average energy industry chain technical efficiency will rise to 0.9651 from 0.9649, representing an improvement of 3.6162%.
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6

Ji, Bingyu, Ran Li, and Changan Wu. "Rate-Distortion and Rate-Energy-Distortion Evaluations of Compressive-Sensing Video Coding." International Journal of Digital Multimedia Broadcasting 2017 (2017): 1–8. http://dx.doi.org/10.1155/2017/4589124.

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Compressive-Sensing Video Coding (CSVC) is a new video coding framework based on compressive-sensing (CS) theory. This paper presents the evaluations on rate-distortion performance and rate-energy-distortion performance of CSVC by comparing it with the popular hybrid video coding standard H.264 and distributed video coding (DVC) system DISCOVER. Experimental results show that CSVC achieves a poor rate-distortion performance when compared with H.264 and DISCOVER, but its rate-energy-distortion performance has a distinct advantage; moreover, its energy consumption of coding is approximately invariant regardless of reconstruction quality. It can be concluded that, with a limited energy budget, CSVC outperforms H.264 and DISCOVER, but its rate-distortion performance still needs improvement.
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7

Mardiono, Djoko Anwar, Gunawan Toto Hadiyanto, and Intan Kumala Sari. "Penggunaan Common-Mode Filter dan Differential-Mode Filter Pada EMI Driver Lampu LED." Zona Teknik: Jurnal Ilmiah 15, no. 2 (December 29, 2021): 1. http://dx.doi.org/10.37776/zt.v15i2.811.

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Power Energy efficiency for public application commonly used driver IC that operate by (Pulse Width Modulation) PWM, The effect of this implementation will generate EMI (Electromagnetic Interference) that can make radio signal distortion or other electronic distortion in the around device area. The action to reduce the signal distortions shall use Filter implementation in the electronic device circuit. The filter to reduce signal distortion are power line filter or ferrite beads filter. Power line filter used for reduce and to filtering noise signal from Power line source from PLN power line or from power line distribution Conduction emission., The ferrite beads filter implementation for noise reduction or filtering from Source power supply to load. Implement of both filters at the circuit diagram will impact to reduce noise signal that make distortion to the signal source.
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8

Alber, M., and K. Bartmann. "Spalling prediction by distortion strain energy." IOP Conference Series: Earth and Environmental Science 833, no. 1 (August 1, 2021): 012160. http://dx.doi.org/10.1088/1755-1315/833/1/012160.

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9

Scha¨ffler, A., and D. C. Miatt. "Experimental Evaluation of Heavy Fan-High-Pressure Compressor Interaction in a Three-Shaft Engine: Part II—Analysis of Distortion and Fan Loading." Journal of Engineering for Gas Turbines and Power 108, no. 1 (January 1, 1986): 171–74. http://dx.doi.org/10.1115/1.3239867.

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Analysis of a severe rotating-stall phenomenon encountered in the fan core section of a three-shaft low bypass engine revealed interesting insight into the growth and circumferential extension of the stall cells immediately before surge of the high-pressure compressor was induced. The effect of a rotating distortion in contrast to the usually encountered stationary distortion is highlighted. The rotating distortion changes the time and hence the effectively felt distortion sector angle depending on a co- or contra-rotational arrangement of the distorting and the distorted compressor. The analysis shows that a contra-rotational arrangement provides a more stable and tolerant situation against that type of distortion. Analysis of the fan loading shows the static temperature rise coefficient to be the most descriptive for the fan rotor 1 hub section which initiated the rotating-stall mechanism.
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10

Shumilin, Sergei Sergeevich. "Methods for anchoring boundary nodes when smoothing a triangular surface mesh." Program Systems: Theory and Applications 12, no. 2 (June 29, 2021): 207–19. http://dx.doi.org/10.25209/2079-3316-2021-12-2-207-219.

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In numerical modeling tasks that use surface meshes, remeshing is often required. However, while remeshing, distortion can occur. The accumulation of distortions can lead to the collapse of the solution. Smoothing algorithms are used to maintain the quality of the mesh during the calculation. When performing smoothing using methods that shift the mesh nodes, the border nodes are usually fixed to avoid distortion. However, simply fixing the nodes can lead to more severe distortion. This paper presents methods for working with boundary nodes to control such nodes during the smoothing process. Algorithms for working with pseudo-3D surface meshes, which are of particular interest, are also considered.
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Дисертації з теми "Energy distortion"

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Bihun, Oksana Chicone Carmen Charles. "Approximate isometries and distortion energy functionals." Diss., Columbia, Mo. : University of Missouri--Columbia, 2009. http://hdl.handle.net/10355/6129.

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Title from PDF of title page (University of Missouri--Columbia, viewed on Feb. 11, 2010). The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file. Dissertation advisor: Professor Carmen Chicone. Vita. Includes bibliographical references.
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2

VERDEROSA, ANTONELLA. "Density and Energy Distortion in an Oscillator Chain." Doctoral thesis, Politecnico di Torino, 2017. http://hdl.handle.net/11583/2679565.

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The work in this thesis is focused on the thermodynamic properties of microscopic systems in low dimen- sions which are characterized by some peculiar features. In particular we try to understand how the density and the energy of the particles in an oscillator chain can change due to the presence of non equilibrium conditions. This kind of system has been studied widely and deeply: here we choose a different approach and we deal with the problem in a different way. More precisely, instead of considering the dynamics of the chain and its interaction with the reservoirs, we focus on the heat flux that travels through the chain by adding a distorsion to the Hamiltonian that describes the oscillator chain. The chain has fixed edges and equal masses for all particles and it is defined in a phase space of 2N dimensions, with N the number of particles. The work is divided into two part: in the first one we consider for the system a harmonic potential. It is known in literature that not only numerical but also exact analytical solutions already exist in this case. Indeed we use the harmonic chain as a check, to understand if our results are in agreement with the known ones and hence if our model can be consistent. To do this we try to extrapolate the properties of this physical system by computing some basic observables that characterize the chain. We start in Chapter 3 with the analytical computation for a 2-particle system: the quantities taken into account are the kinetic temperature, the variance of the space variables, the average position of the particles and the average of the distance between two particles. We prove for these observables exact solutions exist for this model but only under some constraints on the parameter space. We then study the same observables numerically in Chapter 4 for a 50-particle system by running some Monte Carlo simulations: the results were quite promising: the qualitative behavior of all the quantities considered prove to be similar to the ones known in literature. We consider also the temperature profile to check if the relation hv i 2 i = β 1 < x i+1 − x i > +β 2 still holds for this model: indeed the relation still stands for our model with β 1 = 1 and β 2 having a quadratic dependence on γ. In the second part of the thesis, a new potential is considered: precisely, a α-FPU potential. In this case exact analitycal solutions do not exist yet and hence in Chapter 5 we try to investigate if with this model it is possible to overcome this problem, by computing the same observables as in Chapter 3. this task is indeed not successful, even if some approximated solutions can be obtained by considering a restricted phase space. In Chapter 6 we then run the numerical simulations for the 50-particle system for three different values of k 3 , the coupling constant of the cubic term in the FPU-potential, to understand how the system is changing as we slowly move away from the harmonic case. For k 3 = 0.001 it is straightforward to notice that the behavior is similar to the harmonic case for all variables, while for k 3 = 0.002 and k 3 = 0.003 the trend prove to be more irregular: this is due to a lack of statistics since a higher number of samples is needed in the Monte Carlo simulations for higher values of k 3 . Still, the dependence of these quantities on the non equilibrium conditions, for all the three values is the same as in the harmonic case with the momentum and the variance increasing with the intensity of the distorsion. Finally we study again the temperature profile for the different values of k 3 to comapare the results with the harmonic case: we can see that also the dependence of β 2 on γ is the same, with β 1 = 1 and β 2 with a quadratic dependence on γ and increasing as we move away from the harmonic case.
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3

Goh, William Man-Yeki. "Complex distortion of energy spectrum in computable representations of scattering amplitudes /." The Ohio State University, 1988. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487584612164897.

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4

Negumbo, Rosalia. "Analysis for electrical energy and overall efficiency in distribution networks with harmonic distortion." Thesis, Cape Peninsula University of Technology, 2009. http://hdl.handle.net/20.500.11838/1103.

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Thesis (MTech (Electrical Engineering))--Cape Peninsula University of Technology, 2009
Traditionally, harmonics are ignored in overall efficiency and energy usage studies. However, in the modern era, power systems contain levels of harmonics which can no longer be ignored by engineers, planners, energy conservationists and economists. The directions of power flows have to be considered when harmonics are present in the power network. A methodology and new formulae for individual and overall efficiency and energy usage is developed at each frequency (f1, h and H) and forms the main contribution to research in this field. Two case studies were conducted; a measurement based laboratory experiment set-up and a simulated case study. In the set-up, measurements of current, voltage and power at different points in the network for the 1st, 5th and 7th frequencies were taken. Current and voltage results were used for hand calculations to prove the measured power flows and directions. The measurements were taken with a Fluke 345 three-phase harmonic power quality analyzer. For the simulated case study, a network was investigated using the DIgSILENT and SuperHarm software packages. Their results were compared and it was found that DIgSILENT is the preferred package for power results. It was found that the total harmonic distortion limit for voltage in the simulated network exceeded an acceptable level. The harmonic mitigation solution chosen was to design a passive filter to decrease the distortion by shifting the resonance point of the network. The method to design the passive filter and its impact on efficiency and energy usage is included in the thesis. Unique power flow direction diagrams are developed as part of the methodology and form an essential step in the derivation of the new formulae. Efficiencies, power losses and energy usage at individual and combined frequencies were determined. Results showed the negative effects of harmonics on overall efficiency, energy usage and power losses of the system. The methodology and new formulae developed was found to be effective and their application is recommended for use by industry.
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5

Larsson, Anders. "On high-frequency distortion in low-voltage power systems." Doctoral thesis, Luleå tekniska universitet, Energivetenskap, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-26658.

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Power quality is a subject that has received a lot of attention during the last 10 to 20 years, both in industry and in academia. Power quality concerns interaction between the power grid and its customers and between the power grid and equipment connected to it, reflected in voltages and currents. Research and other developments in this area have to a great extent concentrated on relatively slow and low-frequency phenomena, with the main emphasis being on voltage dips (reductions in voltage magnitude with duration between about 50 ms and several seconds) and low-frequency harmonics (waveform distortion by frequency components up to about 2 kHz). These phenomena are reasonably well understood and several standards cover the area. For higher-frequency phenomena, above 2 kHz, there is no such general understanding, nor is there anything close to a complete set of standards covering this area. Modern energy efficient equipment connected to the grid, like fluorescent lamps but also solar panels, often uses switching technology, with switching frequencies that can range from a couple of kHz up to several hundreds of kHz. The grid is also used for communication of e.g. meter readings, system controls etc. This so-called power-line communication is using the same frequency range. The main frequency range of interest for this thesis has been the range from 2 to 150 kHz. There are two completely different measurement methods covering this frequency range: time-domain based and frequency-domain based. Time domain based measurements are used throughout the thesis. This gives an opportunity to choose between different analysing tools where among others the joint time-frequency domain has shown to be a useful tool for describing waveform distortion in our frequency range of interest. The majority of the measurements presented in this thesis have been directed towards fluorescent light powered by high frequency ballasts. This type of load has been, due to stringent harmonic limits, one of the first to use a more advanced switching technology called active power factor correction. This technique is also getting more frequently used in other small-power equipment, like computers. Installations of lights in stores etc. normally contain a large number of ballast connected together and the interaction is of importance, for example for setting emission and immunity standards. The measurements on ballasts presented in this work have shown that distortion in the frequency rage 2-150 kHz comes in three types: narrowband distortion; wideband distortion; and recurrent oscillations. The recurrent oscillations are a new type of powerquality disturbance that had not been recognized as such before. The measurements further have shown that the three types of distortion spread in a completely different way from the individual devices to the grid. This knowledge is essential for the setting of emission requirements on energy-efficient equipment.
Godkänd; 2011; 20110216 (andlar); DISPUTATION Nedanstående person kommer att disputera för avläggande av teknologie doktorsexamen. Namn: Anders Larsson Ämnesområde: Energiteknik/Energy Engineering Avhandling: On High-Frequency Distortion in Low-Voltage Power Systems Opponent: Adj. professor Lars Gertmar, Institutionen för industriell elektroteknik och automation, Lunds universitet Ordförande: Professor Math Bollen, Institutionen för teknikvetenskap och matematik, Luleå tekniska universitet Tid: Onsdag den 23 mars 2011, kl 10.00 Plats: Hörsal A, Campus Skellefteå, Luleå tekniska universitet
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Cho, Jang Rae. "Residual stresses and distortion during the high energy power beam processing of titanium alloys." Thesis, University of Cambridge, 2003. https://www.repository.cam.ac.uk/handle/1810/251875.

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7

Cheng, Wenye. "Embedded system design and power-rate-distortion optimization for video encoding under energy constraints." Diss., Columbia, Mo. : University of Missouri-Columbia, 2007. http://hdl.handle.net/10355/5050.

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Thesis (M.S.)--University of Missouri-Columbia, 2007.
The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on January 3, 2008) Includes bibliographical references.
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8

Larsson, Anders. "High frequency distortion in power grids due to electronic equipment." Licentiate thesis, Luleå : Luleå tekniska universitet/Tillämpad fysik, maskin- och materialteknik/Energiteknik, 2006. http://epubl.ltu.se/1402-1757/2006/63/LTU-LIC-0663-SE.pdf.

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9

Skolthanarat, Siriya. "The Modeling and Control of a Wind Farm and Grid Interconnection in a multi-machine system." Diss., Virginia Tech, 2009. http://hdl.handle.net/10919/28920.

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This dissertation focuses on the modeling and control of WECS (Wind Energy Conversion System) in a multi-machine system. As one of the fastest growing renewable energy resources, the trend of wind energy changes to variable speed wind turbines. The concept of the variable speed is based on the variable speed according to the instantaneous wind speed of wind turbines. Since the utility grid requires the stable frequency and magnitude voltages, there must be grid interconnection of the wind farm and the utility grid. The grid interconnection must support the concept of the variable speed wind turbines. Since each wind turbine locates in a different location in a wind site, it receives the different wind speed. Hence the grid interconnection must convert the variable frequency and magnitude output voltages of the wind turbines to a synchronous frequency and magnitude voltages associated to the grid. With the new technologies of power semiconductor devices, the power converter can operate with high voltage, high current, and high switching frequency. This results in a higher power capacity of a wind farm. Nonetheless, the power converters generate harmonic distortions to the utility grid. The harmonic distortions components in the voltages and currents of the grid degrade the power quality. This results in the damage of electrical components in the power system such as capacitor banks, inductors, protection devices, etc. The harmonic distortions can be reduced with the technology of the multi-level inverter. It is required that the wind energy provides the real and reactive power control for frequency and voltage stability. In order to achieve the power control, the modeling and control of the power electronic grid interconnection is presented in this dissertation. The grid interconnection is modeled with linearization techniques. The models in frequency domain in the form of transfer functions are used to design the compensators in the control system. The model is considered as a SISO (Single Input Single Output) system to design the compensators in SISO tool of MATLAB. The selected control system is current control that can control the real and reactive powers independently. Furthermore, since the grid interconnection is modeled separately for each sub-system, the control system is verified with integration of the sub-systems. The grid interconnection is modeled in Simulink and simulated in the PSCAD. In reality, the power system is comprised of multi-machines. They affect the power system stability, reliability, and quality. The dynamic modeling of an aggregated wind farm with synchronous generator and grid interconnection in a multi-machine system is presented. The test system is a 10-bus system with three generators and three loads. The dynamic modeling involves the power flow calculations that determine the equilibrium points of the system. The system is modeled with differential equations of wind turbines, synchronous generators, and grid interconnection. The system is modeled in the time domain in state space form. The system characteristics can be determined by poles or eigen values obtained from the characteristic equations. Since the system is MIMO (Multi Input Multi Output) system, the optimal control theory is used to reduce the deviation of system behaviors during disturbances. The LQR (Linear Quadratic Regulator) is utilized to control the system with eigen value assignment method. Simulation results in Simulink are illustrated.
Ph. D.
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10

Hareer, Rahila Wardak. "Seismic response of building façade system with energy absorbing connections." Thesis, Queensland University of Technology, 2007. https://eprints.qut.edu.au/16537/1/Rahila_Hareer_Thesis.pdf.

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Facades are popular in modern buildings and are made of different materials such as pre-cast concrete, glass, aluminium, granite or marble and steel. During recent times seismic activity in densely populated areas has resulted in damage and a consequent loss of life. There were many types of building failure, including failure of building facade systems. Facade systems are highly vulnerable and fail more frequently than the buildings themselves with significant devastating effects. During an earthquake building frames suffer large interstorey drifts, causing racking of the building facade systems. The facade systems may not be able to cater for such large deformations and this can result in either functional or total failure at the facade connections or damage by pounding (impact) with adjacent facade panels. Façade failure and collapse can cause serious damage to buildings and injury to people in the vicinity. Moreover, facade represent between 10- 20 % or more of the total building cost depending on the size and importance of the facility and facade material (Facades1980). Considering the cost and safety issues, the importance of a well designed facade system on a building needs to be emphasised. In modern buildings, energy absorbing passive damping devices are very commonly used for energy absorption in order to manage the vibration response of multistorey buildings in an earthquake event. A number of manufactured dampers such as Viscoelastic and viscous, friction and yielding dampers are available. These dampers use a range of materials and designs in order to achieve diverse levels of damping and stiffness. This thesis is an investigation of the seismic behaviour of building facade systems and studies the effects of facade and connection properties on this response. The objectives with energy absorbing connections of the study are to determine and control facade distortions and to establish the required connection properties. Finite Element techniques have been used for modelling and analysis of the building frame, facade and connections. Time history analyses under earthquake loadings were carried out to determine the system response in terms of inter-storey drifts, facade distortions, differential displacement between facades and frames and the axial force in horizontal connections. Connection properties with respect to stiffness and energy absorption capability (or damping) have been modelled and varied to obtain the desired response. Findings illustrate the influence of these connection properties on system response and show that it is possible to control facade distortions to within acceptable limits. They also demonstrate that energy absorbing connections are able to reduce inter-storey drifts and mitigate the detrimental seismic effects on the entire building facade system.
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Книги з теми "Energy distortion"

1

Great Britain. Parliament. House of Commons. Select Committee on Energy. Second report from the Energy Committee session 1986-87: Standpipe distortion at Hinkley Point 'A' Power Station and the cost of decommissioning magnox reactors : together with minutes of proceedings relating to the report, minutes of evidence and appendices. London: HMSO, 1987.

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2

Hoeller, Peter. Energy taxation and price distortions in fossil fuel markets: Some implications for climate change policy. Paris: Organisation for Economic Co-operation and Development, 1992.

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3

Great Britain. Parliament. House of Commons. Select Committee on Energy. First special report, Energy Committee, session 1987-88: Government observations on the second report from the Committee (session 1986-87) on standpipe distortion at Hinkley Point 'A' power station and the cost of decommissioning magnox reactors and on the third report (session 1986-87) on the effect of oil and gas prices on activity in the North Sea : report with appendices, together with the proceedings of the Committee. London: HMSO, 1987.

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4

Brown, Ian. Energy Pricing, Regulation, Subsidies and Distortion. Univ.Surrey,Dept.of Economics, 1988.

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5

Launay, Jean-Pierre, and Michel Verdaguer. Electrons in Molecules. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198814597.001.0001.

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The book treats in a unified way electronic properties of molecules (magnetic, electrical, photophysical), culminating with the mastering of electrons, i.e. molecular electronics and spintronics and molecular machines. Chapter 1 recalls basic concepts. Chapter 2 describes the magnetic properties due to localized electrons. This includes phenomena such as spin cross-over, exchange interaction from dihydrogen to extended molecular magnetic systems, and magnetic anisotropy with single-molecule magnets. Chapter 3 is devoted to the electrical properties due to moving electrons. One considers first electron transfer in discrete molecular systems, in particular in mixed valence compounds. Then, extended molecular solids, in particular molecular conductors, are described by band theory. Special attention is paid to structural distortions (Peierls instability) and interelectronic repulsions in narrow-band systems. Chapter 4 treats photophysical properties, mainly electron transfer in the excited state and its applications to photodiodes, organic light emitting diodes, photovoltaic cells and water photolysis. Energy transfer is also treated. Photomagnetism (how a photonic excitation modifies magnetic properties) is introduced. Finally, Chapter 5 combines the previous knowledge for three advanced subjects: first molecular electronics in its hybrid form (molecules connected to electrodes acting as wires, diodes, memory elements, field-effect transistors) or in the quantum computation approach. Then, molecular spintronics, using, besides the charge, the spin of the electron. Finally the theme of molecular machines is presented, with the problem of the directionality control of their motion.
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Isurin, Ludmila. Reenacting the Enemy. Oxford University Press, 2022. http://dx.doi.org/10.1093/oso/9780197605462.001.0001.

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This book discusses how group memories about recent political events are constructed by the media of the group and how the information provided by the media is consumed by individual minds to form memories of those events. Based on the accumulated research in three distinct areas—collective memory, media, and the mind—the book offers an interdisciplinary sociocognitive framework within which a case study of Russian and American memory construction is investigated. The analysis of seven political events involving Russia that took place in the second decade of the 21st century and were discussed in Russian and American media outlets showed how ideological bias, distortion, and schemata worked to push against the other in an attempt to establish a narrative that reenacted an old and now reemerged enemy. By initially invoking not entirely forgotten stereotypes from the decades of the Cold War and later reinforcing those with new stories that perfectly fit old narrative frames, the two countries—via their respective media—became engaged in an information war that ultimately aimed at reaching the minds of people in those two countries. Those minds, however, while consciously questioning the trustworthiness of news coverage by their respective media, have formed memories along the ideological lines provided by the very media that they claim they do not trust. The book brings together two different methodologies and resources: content analysis of media texts and empirical data from human participants.
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Частини книг з теми "Energy distortion"

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Martins, António, João Faria, and Abel Ferreira. "Voltage Distortion Minimization in Cascaded H-Bridge Inverters." In Green Energy and Networking, 86–102. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-12950-7_8.

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Devos, Thomas, and François Malrait. "Embedded Estimation of Variable Speed Drive Input Current Distortion." In Springer Proceedings in Energy, 633–48. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-69799-0_45.

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Giang, Vu Thi Thuy, and Do Nhu Trang. "Analysis Stability of Tunnel Using Theory Distortion Strain Energy." In Lecture Notes in Civil Engineering, 343–53. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-0945-9_28.

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Tortoreli, Marina, Paul E. Russell, Platon Baltas, and James A. Morris. "Harmonic Distortion Propagation in Distribution Systems with Utility Interactive Photovoltaic Systems." In Seventh E.C. Photovoltaic Solar Energy Conference, 182–86. Dordrecht: Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-3817-5_33.

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Davoli, Franco, Mario Marchese, and Maurizio Mongelli. "Energy and Distortion Minimization in “Refining” and “Expanding” Sensor Networks." In The Internet of Things, 319–27. New York, NY: Springer New York, 2010. http://dx.doi.org/10.1007/978-1-4419-1674-7_31.

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Juárez, Eduardo, Fernando Pescador, Pedro J. Lobo, Angel Groba, and César Sanz. "Distortion-Energy Analysis of an OMAP-Based H.264/SVC Decoder." In Mobile Multimedia Communications, 544–59. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-35155-6_43.

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Solanki, Pooja, Charul Bhatnagar, Anand Singh Jalal, and Manoj Kumar. "Content Aware Image Size Reduction Using Low Energy Maps for Reduced Distortion." In Advances in Intelligent Systems and Computing, 467–74. Singapore: Springer Singapore, 2016. http://dx.doi.org/10.1007/978-981-10-2104-6_42.

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8

Agrawal, Amit, Ashish Shrivastava, Amit Rai, and K. C. Jana. "A 26 W Power Supply Based on Luo Converter with Improved Power Factor and Total Harmonic Distortion." In Intelligent Computing Techniques for Smart Energy Systems, 953–62. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-15-0214-9_101.

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9

Guelachvili, Guy, and Nathalie Picqué. "16O3 Vibrational Energy and Rotational and Centrifugal Distortion Constants for the (202) State." In Molecular Constants Mostly from Infrared Spectroscopy, 66–67. Berlin, Heidelberg: Springer Berlin Heidelberg, 2019. http://dx.doi.org/10.1007/978-3-662-57960-2_27.

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Pak, Daniel H., Minliang Liu, Theodore Kim, Liang Liang, Raymond McKay, Wei Sun, and James S. Duncan. "Distortion Energy for Deep Learning-Based Volumetric Finite Element Mesh Generation for Aortic Valves." In Medical Image Computing and Computer Assisted Intervention – MICCAI 2021, 485–94. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-87231-1_47.

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Тези доповідей конференцій з теми "Energy distortion"

1

Vaze, Rahul, Shreyas Chaudhari, Akshat Choube, and Nitin Aggarwal. "Energy-Delay-Distortion Problem." In 2018 Twenty Fourth National Conference on Communications (NCC). IEEE, 2018. http://dx.doi.org/10.1109/ncc.2018.8600172.

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Basu, S. L. "A Review of Rapid Distortion Theory." In Floating Offshore Energy Devices. Materials Research Forum LLC, 2022. http://dx.doi.org/10.21741/9781644901731-4.

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Abstract. With the depleting non-renewable fuel sources like coal and an ever-increasing demand for energy, we need to start looking into renewable energy sources. These are of paramount importance for a sustainable and green future. Wind Energy is one of the most important sources of renewable energy. But, setting up a wind farm requires considerable land area and land acquisitions are often faced with legal hurdles. This necessitates setting up offshore wind turbines. But, when we talk about offshore wind farms, we need to address the age-old phenomenon: “Turbulence”. Presently, we are trying to develop enhanced controllers for wind farms which will increase the efficiency of the wind farms. The effects of rapidly changing wake aerodynamics i.e. breakdown of strong tip and hub vortices mixed up with low intensity turbulence in the inflow of the rotor and counter-rotation of the wake i.e. determinate velocity component in wake turbulence field will affect the overall performance of the wind farm. This paper provides a brief review on Rapid Distortion Theory (RDT) to model the turbulence.
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3

Xue, Junxiao, Zekun Wang, Chengming Liu, and Mingliang Xu. "Conformal Parameterization by Minimizing Distortion Energy." In 2017 International Conference on Virtual Reality and Visualization (ICVRV). IEEE, 2017. http://dx.doi.org/10.1109/icvrv.2017.00020.

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4

Hwan-hee Lee, Chang-hyun Lee, and Myeong-jin Lee. "Joint Distortion-Energy control for energy harvesting video sensor nodes." In 2017 International Conference on Information Networking (ICOIN). IEEE, 2017. http://dx.doi.org/10.1109/icoin.2017.7899460.

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Bollen, M. H. J., Liangzhong Yao, S. K. Rönnberg, and M. Wahlberg. "Harmonic and interharmonic distortion due to a windpark." In Energy Society General Meeting. IEEE, 2010. http://dx.doi.org/10.1109/pes.2010.5588160.

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Emanuel, A. E., R. Langella, and A. Testa. "Limiting low frequency interharmonic distortion and voltage fluctuations." In Energy Society General Meeting. IEEE, 2010. http://dx.doi.org/10.1109/pes.2010.5589809.

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7

Wei Sun, G. P. Harrison, and S. Z. Djokic. "Distribution network capacity assessment: Incorporating harmonic distortion limits." In 2012 IEEE Power & Energy Society General Meeting. New Energy Horizons - Opportunities and Challenges. IEEE, 2012. http://dx.doi.org/10.1109/pesgm.2012.6344764.

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Pfajfar, T., J. Meyer, P. Schegner, and I. Papic. "Influence of instrument transformers on harmonic distortion assessment." In 2012 IEEE Power & Energy Society General Meeting. New Energy Horizons - Opportunities and Challenges. IEEE, 2012. http://dx.doi.org/10.1109/pesgm.2012.6345309.

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9

Prajapati, Ankul, and Taral Sharma. "Extraction of electrical energy via dynamical distortion of energy-time-equilibrium." In 3RD INTERNATIONAL CONFERENCE ON CONDENSED MATTER AND APPLIED PHYSICS (ICC-2019). AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0001261.

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Jain, Aman, Deniz Gunduz, Sanjeev R. Kulkarni, H. Vincent Poor, and Sergio Verdu. "Energy-distortion tradeoff with multiple sources and feedback." In 2010 Information Theory and Applications Workshop (ITA 2010). IEEE, 2010. http://dx.doi.org/10.1109/ita.2010.5454131.

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Звіти організацій з теми "Energy distortion"

1

Wraback, Michael, and Mark Dubinskiy. Rare-Earth Doped Gallium Nitride (GaN)- An Innovative Path Toward Area-scalable Solid-state High Energy Lasers Without Thermal Distortion. Fort Belvoir, VA: Defense Technical Information Center, April 2009. http://dx.doi.org/10.21236/ada496417.

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2

Hart, Carl, and Gregory Lyons. A tutorial on the rapid distortion theory model for unidirectional, plane shearing of homogeneous turbulence. Engineer Research and Development Center (U.S.), July 2022. http://dx.doi.org/10.21079/11681/44766.

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The theory of near-surface atmospheric wind noise is largely predicated on assuming turbulence is homogeneous and isotropic. For high turbulent wavenumbers, this is a fairly reasonable approximation, though it can introduce non-negligible errors in shear flows. Recent near-surface measurements of atmospheric turbulence suggest that anisotropic turbulence can be adequately modeled by rapid-distortion theory (RDT), which can serve as a natural extension of wind noise theory. Here, a solution for the RDT equations of unidirectional plane shearing of homogeneous turbulence is reproduced. It is assumed that the time-varying velocity spectral tensor can be made stationary by substituting an eddy-lifetime parameter in place of time. General and particular RDT evolution equations for stochastic increments are derived in detail. Analytical solutions for the RDT evolution equation, with and without an effective eddy viscosity, are given. An alternative expression for the eddy-lifetime parameter is shown. The turbulence kinetic energy budget is examined for RDT. Predictions by RDT are shown for velocity (co)variances, one-dimensional streamwise spectra, length scales, and the second invariant of the anisotropy tensor of the moments of velocity. The RDT prediction of the second invariant for the velocity anisotropy tensor is shown to agree better with direct numerical simulations than previously reported.
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3

Measuring distortions in international markets: Below-market energy inputs. Organisation for Economic Co-Operation and Development (OECD), February 2023. http://dx.doi.org/10.1787/b26140ff-en.

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