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Gotowa bibliografia na temat „FDLF Method”

Autor: Grafiati

Data publikacji: 6 września 2023

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Artykuły w czasopismach na temat "FDLF Method"

Kubba, Hassan Abdullah, i Yasser Falah Hassan. "A Real-Time Fuzzy Load Flow and Contingency Analysis Based on Gaussian Distribution System". Journal of Engineering 21, nr 8 (1.08.2015): 55–70. http://dx.doi.org/10.31026/j.eng.2015.08.04.

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Fuzzy logic is used to solve the load flow and contingency analysis problems, so decreasing computing time and its the best selection instead of the traditional methods. The proposed method is very accurate with outstanding computation time, which made the fuzzy load flow (FLF) suitable for real time application for small- as well as large-scale power systems. In addition that, the FLF efficiently able to solve load flow problem of ill-conditioned power systems and contingency analysis. The FLF method using Gaussian membership function requires less number of iterations and less computing time than that required in the FLF method using triangular membership function. Using sparsity technique for the input Ybus sparse matrix data gives reduction in overall computation time and storage requirements. The performance of the used methods had been tested on two typical test systems being the IEEE 14-bus and 30-bus systems in addition to the 362-bus Iraqi National Grid. All the obtained results under normal operating conditions show that the computation time of the fuzzy Load Flow (FLF) is less than the fast decoupled load flow (FDLF).

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Krishna Praveen, D., ShaikHussain Vali i Vempalle Rafi. "A Novel Fast Hybrid Frequency Domain Approach for Evaluating Harmonic Power Flow in Electricity Networks". Journal of Physics: Conference Series 2070, nr 1 (1.11.2021): 012134. http://dx.doi.org/10.1088/1742-6596/2070/1/012134.

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Abstract Ideally, an AC power supply should constantly provide a perfectly sinusoidal voltage signal at every customer location. Nowadays, many power electronic equipment’s are used in industry in seeking higher system reliability and efficiency and more electronic or microprocessor controllers are used in power system to control AC/DC transmission lines or loads. Moreover, the importance of green energy such as wind and solar is continually growing in our societies not only due to environmental concerns but also to resolve the problem of access to electricity in rural areas. As a result of these issues, power quality problems especially generation of harmonics are on the rise in the distribution network. In electrical power system, harmonics have a number of undesirable effects on power system devices as well as on their operation. It therefore becomes imperative for power system engineers to analyse the penetration of harmonics from the various sources into the network which commonly is known as harmonic power flow evaluation. This paper proposed a novel fast hybrid frequency domain approach (FHA) to evaluate the steady state harmonic power flow with discrete harmonic frequency. The proposed method is applied to IEEE – 14 bus, IEEE New England 39 - bus, IEEE – 57 bus and IEEE 118 - bus power system respectively and compared with Newton – Raphson (NR) load flow method and Fast decoupled load flow method (FDLF) and the results validate the accuracy, robustness and authenticity of the proposed method.

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Campbell, Graeme, Michelle Lake i Catherine McGoveran. "Investigating the Persistence of Federal Government Publications in Academic Former Full Depository Libraries in Canada". Evidence Based Library and Information Practice 18, nr 1 (16.03.2023): 24–60. http://dx.doi.org/10.18438/eblip30203.

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Objective – The Depository Services Program (DSP) provided printed Government of Canada publications to libraries until the termination of its distribution program in 2013. Full Depository Libraries (FDLs) received all eligible publications distributed by the DSP automatically. This study endeavours to determine whether academic library members of the Canadian Association of Research Libraries (CARL) that were formerly FDLs have maintained their print, federal government holdings since 2013; and what the results of the data collected in this study reveal about access to government information in Canada more broadly. Methods – The study identified a sample of 100 monographs distributed to FDLs via the DSP between 1979 and 2009. Each monograph was then searched for in the public catalogues of former FDL CARL member libraries to determine current holdings. Results – Most libraries included in the sample did not have records of all 100 publications, but every publication was located in at least 5 libraries and 12 publications were found in all libraries included in the study. Of the libraries in our sample, 1/3 had retained more than 90 of 100 publications, and 3/4 had retained at least 80. Conclusion – The redundancy that was a cornerstone of the DSP network still exists to a certain extent and should be leveraged to ensure retention and access to these essential materials for years to come. Existing collaborations and partnerships are well positioned to support a pan-Canadian discussion about preservation of and access to historical federal government information in Canadian libraries and library networks.

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Senduraja, Dr Dinesh, i Mr Pradeep Kumar.A. "Efficient Predictable Probe of Optical Burst Switched For Wireless Feeler Bond". International Journal of Engineering and Computer Science 10, nr 12 (16.12.2021): 25459–64. http://dx.doi.org/10.18535/ijecs/v10i12.4640.

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Optical Burst Switching (OBS) is a promising paradigm for high speed transmission of data. In OBS, a key problem is to schedule bursts with minimum loss. Single method is not sufficient to improve performance. So, our performance model includes some feasible methods to improve OBS performance without significantly increasing the implementation complexity. The methods are addition of simple fiber delay lines (FDLs), increasing random extra offset time, window based channel scheduling (WBS) and Burst Delay Feedback scheduling (BDFS). Additional FDLs can only eliminate the negative impact caused by the variation of the offset time between control packets and data bursts. The random extra offset time approach does not require any additional hardware in the nodes. WBS provides better throughput improvement when FDLs are used in the nodes to compensate the processing time. Finally Burst Delay Feedback Scheduling in addition with these methods can significantly improve OBS throughput and reduce transmission delay.

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Asiabanpour, Bahram, i He Ping Chen. "Automated Layer Aligning and Stacking System for the Fully Dense Freeform Fabrication Process". Advanced Materials Research 655-657 (styczeń 2013): 1251–55. http://dx.doi.org/10.4028/www.scientific.net/amr.655-657.1251.

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The existing building metallic prototypes from metal sheets or foil slices methods suffer some limitations, such as difficulty in making complex features and long process cycle time. The Fully Dense Freeform Fabrication (FDFF) process is a new freeform fabrication method capable of building fully dense prototypes from practically any materials in a layer-by-layer basis, which overcomes the limitations of other methods. However, layer aligning and stacking are still very challenging because aligning and stacking all thin layers takes a lot of time and effort. Therefore, an automated layer aligning and stacking system is proposed and implemented in this paper. A vision system together with a robotics system are developed to automate the FDFF process. Experiments were performed and the results demonstrate that the automated FDFF process can fundamentally improve the concept of rapid prototyping by enabling producing fully dense parts with any complexity and any solid materials for the sizes from micro scale to several feet in a very fast and low cost approach.

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Liu, Xin, Min Li, Bincheng Li i Bin Fan. "Membrane–Fresnel Diffractive Lenses with High-Optical Quality and High-Thermal Stability". Polymers 14, nr 15 (28.07.2022): 3056. http://dx.doi.org/10.3390/polym14153056.

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The membrane–Fresnel diffractive lens (M-FDL) has great potential in the field of high-resolution and lightweight imaging in orbit. However, the M-FDL with high-optical quality and high-thermal stability cannot be fabricated to a standard by the existing processing methods. In this paper, we propose a method for fabricating an M-FDL composed of three steps: the improved repeated spin-coating of the polyimide (PI) membrane, the secondary mucosal method of silica-framed membrane mirror, and the high-precision fabrication of a multi-level microstructure on a flexible, ultrathin membrane substrate. The results show that the root mean square (RMS) of the wave-front error for M-FDL obtained by the above method is 1/28λ (F# = 8.7 at 632.8 nm) with an 80 mm clear aperture, the average diffraction efficiency is more than 70%, the silica-framed membrane mirror possesses approximately 40 times the overall thermal stability of the traditional metal-framed mirror, and the weight is less than 40 g. The measurement results indicate that the M-FDL has high-optical quality and high-thermal stability and can satisfy the imaging requirements.

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Li, Wei Da, Juan Li, Hai Yan Hu, Man Tian Li i Li Ning Sun. "Dynamic Modeling of Continuum Flexible Leg System for Micro Robot". Advanced Materials Research 472-475 (luty 2012): 189–97. http://dx.doi.org/10.4028/www.scientific.net/amr.472-475.189.

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The micro robot that based on resonant principle can get high speed and high precision. However its leg is usually a flexible continuum with complex shapes, and its dynamic modeling is a key problem during researching this kind of robot. A method combining finite element with modal coordinates is presented, and is used to build Finite Degree Of Freedom (FDOF) model of Multi Rigid Bodies (MRD) for flexible leg of micro robot. Modal analysis of continuum model and FDOF model of MRD for flexible leg is conducted in ANSYS and ADAMS software environment respectively. Analysis results show that the two model have similar lower nature frequency and vibration modes, which verified the correctness of the FDOF model and its establish method. Based on FDOF model, the equivalent drive model of piezoelectric bimorph and system dynamic model of micro robot are build, which provides a theoretical basis for dynamic analysis of the micro robot.

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Nieuwenhuijs-Moeke, Gertrude J., Tobias M. Huijink, Robert A. Pol, Mostafa El Moumni, Johannes GM Burgerhof, Michel MRF Struys i Stefan P. Berger. "Intraoperative Fluid Restriction is Associated with Functional Delayed Graft Function in Living Donor Kidney Transplantation: A Retrospective Cohort Analysis". Journal of Clinical Medicine 8, nr 10 (2.10.2019): 1587. http://dx.doi.org/10.3390/jcm8101587.

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Background: In 2016 we observed a marked increase in functional delayed graft function (fDGF) in our living donor kidney transplantation (LDKT) recipients from 8.5% in 2014 and 8.8% in 2015 to 23.0% in 2016. This increase coincided with the introduction of a goal-directed fluid therapy (GDFT) protocol in our kidney transplant recipients. Hereupon, we changed our intraoperative fluid regimen to a fixed amount of 50 mL/kg body weight (BW) and questioned whether the intraoperative fluid regimen was related to this increase in fDGF. Methods: a retrospective cohort analysis of all donors and recipients in our LDKT program between January 2014–February 2017 (n = 275 pairs). Results: Univariate analysis detected various risk factors for fDGF. Dialysis dependent recipients were more likely to develop fDGF compared to pre-emptively transplanted patients (p < 0.001). Recipients developing fDGF received less intraoperative fluid (36 (25.9–50.0) mL/kg BW vs. 47 (37.3–55.6) mL/kg BW (p = 0.007)). The GDFT protocol resulted in a reduction of intraoperative fluid administration on average by 850 mL in total volume and 21% in mL/kg BW compared to our old protocol (p < 0.001). In the unadjusted analysis, a higher intraoperative fluid volume in mL/kg BW was associated with a lower risk for the developing fDGF (OR 0.967, CI (0.941–0.993)). After adjustment for the confounders, prior dialysis and the use of intraoperative noradrenaline, the relationship of fDGF with fluid volume was still apparent (OR 0.970, CI (0.943–0.998)). Conclusion: Implementation of a GDFT protocol led to reduced intraoperative fluid administration in the LDKT recipients. This intraoperative fluid restriction was associated with the development of fDGF.

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Wei, Baofu, Ruoyu Yao i Annunziato Amendola. "Anatomy of the Distal End of Flexor Digitorum Longus Tendon and Percutaneous Release Technique: A Cadaveric Study". Foot & Ankle Orthopaedics 4, nr 4 (1.10.2019): 247301141988427. http://dx.doi.org/10.1177/2473011419884274.

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Background: The transfer of flexor-to-extensor is widely used to correct lesser toe deformity and joint instability. The flexor digitorum longus tendon (FDLT) is percutaneously transected at the distal end and then routed dorsally to the proximal phalanx. The transected tendon must have enough mobility and length for the transfer. The purpose of this study was to dissect the distal end of FDLT and identify the optimal technique to percutaneously release FDLT. Methods: Eight fresh adult forefoot specimens were dissected to describe the relationship between the tendon and the neurovascular bundle and measure the width and length of the distal end of FDLT. Another 7 specimens were used to create the percutaneous release model and test the strength required to pull out FDLT proximally. The tendons were randomly released at the base of the distal phalanx (BDP), the space of the distal interphalangeal joint (SDIP), and the neck of the middle phalanx (NMP). Results: At the distal interphalangeal (DIP) joint, the neurovascular bundle begins to migrate toward the center of the toe and branches off toward the center of the toe belly. The distal end of FDLT can be divided into 3 parts: the distal phalanx part (DPP), the capsule part (CP), and the middle phalanx part (MPP). There was a significant difference in width and length among the 3 parts. The strength required to pull out FDLT proximally was about 168, 96, and 20 N, respectively, for BDP, SDIP, and NMP. Conclusion: The distal end of FDLT can be anatomically described at 3 locations: DPP, CP, and MPP. The tight vinculum brevis and the distal capsule are strong enough to resist proximal retraction. Percutaneous release at NMP can be performed safely and effectively. Clinical Relevance: Percutaneous release at NMP can be performed safely and effectively during flexor-to-extensor transfer.

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Sun, Yuchen, Xiangyang Luo, Han Wang i Zhaorui Ma. "A Method for Identifying Tor Users Visiting Websites Based on Frequency Domain Fingerprinting of Network Traffic". Security and Communication Networks 2022 (31.01.2022): 1–12. http://dx.doi.org/10.1155/2022/3306098.

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Although the anonymous communication network Tor can protect the security of users’ data and privacy during their visits to the Internet, it also facilitates illegal users to access illegal websites. Website fingerprinting attacks can identify the websites that users are visiting to discern whether they are performing illegal operations. Existing methods tend to manually extract the traffic features of users visiting websites and construct machine learning or deep learning models to classify the features. While these methods can be effective in classifying unknown website traffic, the effect of classification in the use of defensive measures or onion service scenarios is not yet ideal. This paper proposes a method to identify Tor users visiting websites based on frequency domain fingerprinting of network traffic (FDF). We extract the direction and length features of circuit sequences in access traffic and combine and transform them into the frequency domain. The classification of access traffic is accomplished by using a deep learning classification model combining CNN, FC, and Self-Attention. In this paper, the proposed FDF method is experimentally validated in common scenarios of Tor networks. The results show that FDF outperforms the existing methods for classification in different Tor scenarios. It can achieve 98.8% and 94.3% classification accuracy in undefended and WTF-PAD defense scenarios, respectively. In the onion service scenario, the accuracy is improved by 4.7% over the current state-of-the-art Tik-Tok method.

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Rozprawy doktorskie na temat "FDLF Method"

Ferreira, Vitor Maciel Vilela. "A hybrid les / lagrangian fdf method on adaptive, block-structured mesh". Universidade Federal de Uberlândia, 2015. https://repositorio.ufu.br/handle/123456789/14982.

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Fundação de Amparo a Pesquisa do Estado de Minas Gerais
Esta dissertação é parte de um amplo projeto de pesquisa, que visa ao desenvolvimento de uma plataforma computacional de dinâmica dos fluidos (CFD) capaz de simular a física de escoamentos que envolvem mistura de várias espécies químicas, com reação e combustão, utilizando um método hibrido Simulação de Grandes Escalas (LES) / Função Densidade Filtrada (FDF) Lagrangiana em malha adaptativa, bloco-estruturada. Uma vez que escoamentos com mistura proporcionam fenômenos que podem ser correlacionados com a combustão em escoamentos turbulentos, uma visão global da fenomenologia de mistura foi apresentada e escoamentos fechados, laminar e turbulento, que envolvem mistura de duas espécies químicas inicialmente segregadas foram simulados utilizando o código de desenvolvimento interno AMR3D e o código recentemente desenvolvido FDF Lagrangiana de composição. A primeira etapa deste trabalho consistiu na criação de um modelo computacional de partículas estocásticas em ambiente de processamento distribuído. Isto foi alcançado com a construção de um mapa Lagrangiano paralelo, que pode gerenciar diferentes tipos de elementos lagrangianos, incluindo partículas estocásticas, particulados, sensores e nós computacionais intrínsecos dos métodos Fronteira Imersa e Acompanhamento de Interface. O mapa conecta informações Lagrangianas com a plataforma Euleriana do código AMR3D, no qual equações de trans- porte são resolvidas. O método FDF Lagrangiana de composição realiza cálculos algébricos sobre partículas estocásticas e provê campos de composição estatisticamente equivalentes aos obtidos quando se utiliza o método de Diferenças Finitas para solução de equações diferenciais parciais; a técnica de Monte Carlo foi utilizada para resolver um sistema derivado de equações diferenciais estocásticas (SDE). Os resultados concordaram com os benchmarks, que são simulações baseadas em plataforma de Diferenças Finitas para solução de uma equação de transporte de composição filtrada.
This master thesis is part of a wide research project, which aims at developing a com- putational fluid dynamics (CFD) framework able to simulate the physics of multiple-species mixing flows, with chemical reaction and combustion, using a hybrid Large Eddy Simulation (LES) / Lagrangian Filtered Density Function (FDF) method on adaptive, block-structured mesh. Since mixing flows provide phenomena that may be correlated with combustion in turbulent flows, we expose an overview of mixing phenomenology and simulated enclosed, ini- tially segregated two-species mixing flows, at laminar and turbulent states, using the in-house built AMR3D and the developed Lagrangian composition FDF codes. The first step towards this objective consisted of building a computational model of notional particles transport on distributed processing environment. We achieved it constructing a parallel Lagrangian map, which can hold different types of Lagrangian elements, including notional particles, particu- lates, sensors and computational nodes intrinsic to Immersed Boundary and Front Tracking methods. The map connects Lagrangian information with the Eulerian framework of the AMR3D code, in which transport equations are solved. The Lagrangian composition FDF method performs algebraic calculations over an ensemble of notional particles and provides composition fields statistically equivalent to those obtained by Finite Differences numerical solution of partially differential equations (PDE); we applied the Monte Carlo technique to solve a derived system of stochastic differential equations (SDE). The results agreed with the benchmarks, which are simulations based on Finite Differences framework to solve a filtered composition transport equation.
Mestre em Engenharia Mecânica

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Chakrabarty, Shantanu. "Algorithms for Adjusted Load Flow Solutions using the Complementarity Principle". Thesis, 2016. http://etd.iisc.ac.in/handle/2005/4161.

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The state of a given power system i.e. voltage magnitudes and angles at all the buses can be computed using the Newton-Raphson Load Flow (NRLF) method when active power and reactive power loads are specified at all the buses of the system. This computation can be carried out more e ciently(in terms of computer memory and time) using the Fast Decoupled Load Flow(FDLF) method for a large class of systems. These methods are the most widely used methods in power system studies. NRLF and FDLF methods require modifications, if voltage magnitude is spec-i ed at some of the generator buses instead of the reactive power load. In such situations, generator reactive power outputs(manipulated by adjusting the field excitation) have to be adjusted to meet this specification. This necessitates the determination of the value of these additional control variables. There are some more similar adjustments that are required to be made in a practical load flow. Sometimes, the voltage at some load buses may be specified. They are to be maintained at the scheduled value using the taps on in-phase transformers(OLTC transformers). Similarly, it is possible in some situations that the active power flow in some lines are specified to be kept at a particular value. The device which facilitates such a control is the phase shifting transformer(PSTs) and the PST tap value is the additional control variable to be determined. The other operation of interest in interconnected power systems is the area interchange control(AIC). This requires that the sum of active power flow between two areas of the system is maintained at the specified value. The control variable value that enables this adjustment is the active generation in a particular generator bus in the area referred to as a swing bus. The load flow problem is referred to as a adjusted load flow problem in cases where in, some of these control variables must also be determined in addition to the state of the system. It must be pointed out here that the control variables must be strictly kept within their limits while bringing the controlled variables to their specified values. If a control variable tends to reach a value beyond its limits, then it is to be set at the limit and the corresponding controlled variable will not be at its scheduled value. Adjusted load flow problems generally involve many control variables of the same type or multiple control variables of different types. The challenge in finding adjusted load flow solutions stems from the fact that the relation between the controlling and controlled variables is not one to one; each controlling variable affects many of the controlled variables. The existing approaches of adjusted load flow solutions generally consider only one type of these adjustments. There are only a very few attempts where more than one type of adjustment is considered. The two broad directions pursued for developing algorithms for adjusted solutions, by the earlier researchers are (1) Introducing additional equations in order to include control variable(between iterations) and (2) Adjusting the controlling variables between unadjusted load flow solution iterations based on the local sensitivity of the controlled variable with respect to a particular controlling variable. The schemes in use for finding adjusted load flow solutions have a flavour of trial and error type of algorithms. Their success in any situation is known to depend on specific details of implementation. Implementation details that guarantee success are not in the public domain. Many times they exhibit oscillatory convergence behaviour requiring very large number of iterations or fail to converge. It is also known that in some situations these algorithms could converge to anomalous solutions(solutions that are inconsistent with practical system behaviour). Such limitations of the existing approaches and also the need for developing better methods is well documented in the literature. Some recent work has shown the promise of the formulation of the adjusted load flow problem in the complementarity framework considering a few of the adjustments. This thesis is intended to further explore this promising direction of investigation. In particular, in this thesis, we develop new algorithms in complementarity framework for the following situations and demonstrate their attractive features as compared with the existing approaches. In this thesis, the following algorithms have been proposed, developed, tested and their performance compared with the existing algorithms. . Two algorithms for including OLTC adjustments, in the FDLF method as Mixed Complementarity Problem(MCP) and Non-linear Complementarity(NCP) formulations. In addition, the above algorithms are further extended to incorporate generator bus Q-limit adjustments simultaneously with the OLTC adjustments. Two new algorithms(two each in MCP and NCP formulations) are developed to handle generator Q-limits and OLTC adjustments individually as well as together in the NRLF formulation in rectangular coordinates. Four algorithms(two in MCP and two in NCP) to handle PST constraints in NRLF and FDLF methods. Four algorithms(two in MCP and two in NCP) to handle AIC constraints in NRLF and FDLF methods. In addition, the PST and AIC adjustment algorithms above are combined to simultaneously carry out PST and AIC adjustments in NRLF as well as FDLF methods. Four algorithms(two for NRLF and two for FDLF) to simultaneously incorporate all the four adjustments simultaneously using MCP and NCP formulations. These algorithms are also shown to be capable of incorporating simultaneously any subset of these four adjustments The thesis focusses only on incorporating adjustments in the NRLF and FDLF methods as they are the most widely used schemes in the industry as well as the academia. It is also pointed out that the investigations here consider the adjustment problem in the traditional framework and hence, none of the power electronics based control equipment or the modern distributed generation sources are considered here. Results of extensive computational experiments are presented and the attractive performance of the new algorithms as compared with the traditional ones are high-lighted. All the new algorithms developed here are fundamentally different from the existing adjusted load flow approaches(not based on complementarity framework) in that they meet the specifications on the system variables and limits on the controlling variables automatically; without requiring either heuristic algorithmic choices or problem specific algorithm manipulation - a fairly common feature in all the existing approaches. This extremely desirable feature of the proposed algorithms is due to the fact that the pro-posed formulations for the adjusted load flow problems in complementarity framework, transform these problems to that of solving a fixed set of non-linear equations. The results in the thesis provide strong evidence of the promise of the new methods for adoption into the widely used NRLF and FDLF programs so as to make solving the adjusted load flow problem as simple as solving the unadjusted load flow problem.

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Książki na temat "FDLF Method"

Haase, Jan. Models, Methods, and Tools for Complex Chip Design: Selected Contributions from Fdl 2012. Springer International Publishing AG, 2016.

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Haase, Jan. Models, Methods, and Tools for Complex Chip Design: Selected Contributions from FDL 2012. Springer, 2013.

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Haase, Jan, red. Models, Methods, and Tools for Complex Chip Design: Selected Contributions from FDL 2012. Springer, 2014.

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Große, Daniel, Tom J. Kazmierski i Sebastian Steinhorst. Languages, Design Methods, and Tools for Electronic System Design: Selected Contributions from FDL 2018. Springer International Publishing AG, 2021.

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Große, Daniel, Sara Vinco i Hiren Patel. Languages, Design Methods, and Tools for Electronic System Design: Selected Contributions from FDL 2017. Springer, 2018.

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Louërat, Marie-Minerve, i Torsten Maehne. Languages, Design Methods, and Tools for Electronic System Design: Selected Contributions from FDL 2013. Springer, 2016.

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Oppenheimer, Frank, i Julio Luis Medina Pasaje. Languages, Design Methods, and Tools for Electronic System Design: Selected Contributions from FDL 2014. Springer, 2019.

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Louërat, Marie-Minerve, i Torsten Maehne. Languages, Design Methods, and Tools for Electronic System Design: Selected Contributions from FDL 2013. Springer, 2014.

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Oppenheimer, Frank, i Julio Luis Medina Pasaje. Languages, Design Methods, and Tools for Electronic System Design: Selected Contributions from FDL 2014. Springer London, Limited, 2016.

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Wille, Robert, i Franco Fummi. Languages, Design Methods, and Tools for Electronic System Design: Selected Contributions from FDL 2016. Springer, 2018.

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Części książek na temat "FDLF Method"

Chetverikov, Andrey, Sabrina Hansmann-Roth, Ömer Dağlar Tanrıkulu i Árni Kristjánsson. "Feature Distribution Learning (FDL): A New Method for Studying Visual Ensembles Perception with Priming of Attention Shifts". W Spatial Learning and Attention Guidance, 37–57. New York, NY: Springer US, 2019. http://dx.doi.org/10.1007/7657_2019_20.

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Streszczenia konferencji na temat "FDLF Method"

Luo, Meiling, Nikolai Lebedev, Guillaume Villemaud, Guillaume de la Roche, Jie Zhang i Jean-Marie Gorce. "On predicting large scale fading characteristics with the MR-FDPF method". W 2012 6th European Conference on Antennas and Propagation (EuCAP). IEEE, 2012. http://dx.doi.org/10.1109/eucap.2012.6206282.

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Shekofteh, Yasser, Farshad AlmasGanj, Ahmadreza Rezaei i Mohammad Mohsen Goodarzi. "Two novel FDLP based feature extraction methods for improvement of speech recognition". W 2010 5th International Symposium on Telecommunications (IST). IEEE, 2010. http://dx.doi.org/10.1109/istel.2010.5734095.

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Praveen N, Ranjitha S i H. N. Suresh. "A frequency-domain adaptive filter (FDAF) prediction error method and ARLS for speech echo cancellation". W 2016 2nd International Conference on Applied and Theoretical Computing and Communication Technology (iCATccT). IEEE, 2016. http://dx.doi.org/10.1109/icatcct.2016.7911988.

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Cuquel, Alexis, Camilo Silva, Franck Nicoud, Daniel Durox i Thierry Schuller. "Prediction of the Nonlinear Dynamics of a Multiple Flame Combustor by Coupling the Describing Function Methodology With a Helmholtz Solver". W ASME Turbo Expo 2013: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/gt2013-95659.

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This study focuses on the numerical determination of thermo-acoustic instabilities using a combination of the Flame Describing Function (FDF) methodology and a numerical code solving the Helmholtz equation. In this framework, the FDF is defined by a set of Flame Transfer Functions (FTF) that depend on both the frequency and amplitude of acoustic perturbations. The FDF methodology has been recently used in combination with acoustic network methods to examine the nonlinear stability of generic configurations with simplified geometries. Its extension to complex 3D geometries requires the use of numerical tools such as a Helmholtz solver. In the present work, that combination is validated on a multiple injection combustor. The implementation of the FDF methodology in the Helmholtz solver is detailed before examining numerical predictions obtained by the use of an experimentally determined FDF in the Helmholtz solver. The instability frequencies and growth rates are determined for each perturbation level and different nonlinear behaviors are exhibited depending on the combustor geometry. The case of linearly unstable modes reaching limit cycles is first examined. A more complex case involving mode switching is then examined when two unstable modes are present. In this situation, the most unstable mode in the linear regime triggers another unstable mode at a higher perturbation level. These numerical calculations are compared with experimental data and exhibit a good match in terms of amplitude and frequency reached by the limit cycle.

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Khaligh, R. S., i M. Radetzki. "A dynamic load balancing method for parallel simulation of accuracy adaptive TLMs". W 2010 Forum on Specification & Design Languages (FDL 2010). IET, 2010. http://dx.doi.org/10.1049/ic.2010.0141.

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Seffrin, A., A. Biedermann i S. A. Huss. "Tiny-: a novel formal method for specification. Analysis, and verification of dynamic partial reconfiguration processes". W 2010 Forum on Specification & Design Languages (FDL 2010). IET, 2010. http://dx.doi.org/10.1049/ic.2010.0134.

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Rafiev, A., F. Xia, A. Iliasov, R. Gensh, A. Aalsaud, A. Romanovsky i A. Yakovlev. "Selective abstraction and stochastic methods for scalable power modelling of heterogeneous systems". W 2016 Forum on Specification and Design Languages (FDL). IEEE, 2016. http://dx.doi.org/10.1109/fdl.2016.7880376.

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Shuguang Li, Xinwan Li, Jianguo Shen, Zehua Hong i Jianping Chen. "A new fiber length measuement method with high precision and large absolute length based on FDL". W 2010 19th Annual Wireless and Optical Communications Conference (WOCC 2010). IEEE, 2010. http://dx.doi.org/10.1109/wocc.2010.5510650.

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Brandl, Alexander, i Michael Pfitzner. "A Hybrid-LES-RANS Transported PDF Combustion Model for Non-Premixed Flames". W ASME Turbo Expo 2012: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/gt2012-68079.

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The intention of this work is to combine Large-Eddy-Simulation (LES) for the prediction of flow and mixture fraction fields with a Reynolds-Averaged-Navier-Stokes (RANS) transported probability density function (TPDF) method for the prediction of turbulent non-premixed flames. The motivation for this work is based upon the property of LES to provide a better description of complex flow fields than most current RANS methods can offer, while TPDF-methods excel in predicting the reacting species fields. However, using the straight forward extension of PDF methods for LES, the filtered density function (FDF) approach requires a large number of PDF particles in each LES cell and is thus computationally expensive. Therefore, a method is proposed to use the time-averaged LES flow field, mixture fraction field and mixture fraction PDF as a turbulence model for a RANS TPDF method operating on a much coarser grid. A projection of the mixture fraction conditioned PDF to evaluate the instantaneous LES density field is proposed as coupling device. The reconstruction of mixture fraction PDF from a LES simulation and the coupling to the TPDF method in postprocessing mode is validated using the TNF Sandia D flame, showing good agreement with experiment.

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Peddada, Satya R. T., Samanta B. Rodriguez, Kai A. James i James T. Allison. "Automated Layout Generation Methods for 2D Spatial Packing". W ASME 2020 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/detc2020-22627.

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Abstract Development of a computationally-tractable design method for combined multi-physics optimization of packing and routing problems, at a relevant scale, within compact packaging volumes, will offer benefits across several engineering domains. But for performing multi-physics packing and routing optimization, the generation of spatially feasible initial layouts is essential. Three new and computationally efficient methods are demonstrated in this article to produce automatically interference-free 2D geometric layouts. First, a novel 2D force-directed layout method (FDLM) is proposed that implicitly ensures noninterference between components and/or the interconnect network by utilizing spring force theory without using explicit geometric constraints. Second, the A* algorithm, a well-established 2D shortest path algorithm (SPA), has been modified significantly to perform efficient routing of complex interconnect systems. Third, a new geometric topology (GT) enumeration algorithm is presented that produces all unique interconnect routing configurations for given multi-component system architecture. These layout generation methods are then compared with respect to average computational efficiencies and average success rates in attaining feasible layouts for a restricted class of topologies, including evaluation of how the methods scale to problems with an increased number of components. Limitations and future work items for each method are discussed. These methods are presented as an important step toward solution strategies that are compatible with the currently unmet challenges of real-world 2D and 3D combined packing and routing problems, including efficient navigation of the space of discrete options for interconnect geometric topology, as well as scaling to more complex problems.

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