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Relevant bibliographies by topics / Dq-theory

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Academic literature on the topic 'Dq-theory'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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Journal articles on the topic "Dq-theory"

1

Kumar, Mahender, M. A. Uqaili, Z. A. Memon, and Bhagwan Das. "Mathematical Modeling of THD Mitigation Using HAPF for UPS System with Experimental Analysis via Hybrid Interface of Optical USB and Power Quality Meter." Mathematical Problems in Engineering 2021 (September 29, 2021): 1–15. http://dx.doi.org/10.1155/2021/3981287.

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This paper discusses a novel analysis scheme based on the hybrid interface of Optical USB and Power Quality Meter for measuring Total Harmonic Distortion (THD) that exists in the Uninterruptable Power Supply (UPS) system and connected load. The designed hybrid interface experimentally analyzes the power quality and harmonics of the Uninterrupted Power Supply (UPS) system, and mitigation is proposed with the proposed Single-Phase Hybrid Active Power Filter (HAPF) based on instantaneous Power Theory (PQ) with hysteresis control technique and synchronous frame reference (DQ) with hysteresis contr

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ZHANG, JUN, YONGYU ZHENG, and RUIBAO TAO. "TEMPERATURE DEPENDENCE OF NEMATIC ORDER PARAMETER NEAR TRANSITION." International Journal of Modern Physics B 16, no. 27 (2002): 4105–10. http://dx.doi.org/10.1142/s0217979202014814.

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By means of Tao, Sheng and Lin's generized molecular field theory, the temperature dependence of the order parameter dQ/dT|Tchas been calculated. All the parameters in the calculation are fixed by experiments like the previous paper. There is no adjustable parameter. Our calculated value of dQ/dT|Tc~ 1%K-1agree well with experiments. The new puzzle of small value of dQ/dT|Tcdoes not existence.

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Pauly, Daniel, and Johannes Müller. "Fick’s Diffusion Laws and Scaling of the Gill Surface Area and Oxygen Uptake in Fish." Fishes 10, no. 5 (2025): 233. https://doi.org/10.3390/fishes10050233.

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The oxygen consumption of adult fish (Q) is proportional to their body weight (W) raised to a power, estimated as the slope (dQ) of a linear regression of log(Q) vs. log(W). Similarly, the gill surface area of adult fish (GSA) is proportional to W raised to the power dG, as also estimated via a log-log linear proportional to their surface area. Moreover, because of Fick’s laws of diffusion, dQ should be at least similar to dG. Recently, the claim has been made that non-zero differences between dQ and dG invalidate the Gill-Oxygen Limitation Theory (GOLT), which suggests that the O2 supplied by

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Sáez, Carlos, Oscar Zurriaga, Jordi Pérez-Panadés, Inma Melchor, Montserrat Robles, and Juan M. García-Gómez. "Applying probabilistic temporal and multisite data quality control methods to a public health mortality registry in Spain: a systematic approach to quality control of repositories." Journal of the American Medical Informatics Association 23, no. 6 (2016): 1085–95. http://dx.doi.org/10.1093/jamia/ocw010.

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Abstract Objective To assess the variability in data distributions among data sources and over time through a case study of a large multisite repository as a systematic approach to data quality (DQ). Materials and Methods Novel probabilistic DQ control methods based on information theory and geometry are applied to the Public Health Mortality Registry of the Region of Valencia, Spain, with 512 143 entries from 2000 to 2012, disaggregated into 24 health departments. The methods provide DQ metrics and exploratory visualizations for (1) assessing the variability among multiple sources and (2) mon

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Mörée, Gustav, and Mats Leijon. "Simplified Current-Equivalent Circuit Models of Synchronous Reluctance Machines and Salient Pole Synchronous Machines Considering the Reluctance Torque." Energies 17, no. 5 (2024): 1015. http://dx.doi.org/10.3390/en17051015.

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This paper describes a simplified one-phase equivalent circuit model of three-phase salient pole synchronous machines and synchronous reluctance machines. The model represents the pole saliency as a susceptance, with a magnitude based on the pole saliency and a phase angle based on twice the load angle. The reluctance torque itself is then modeled equivalent to a conductance. The model is made as an extension to Norton equivalents, where the internal inductance is connected as a shunt. This approach shares similarities to the magnetization shunt branch in circuit models of transformers and ind

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Kishida, Ryo, Shosuke Ito, Manickam Sugumaran, Ryan Lacdao Arevalo, Hiroshi Nakanishi, and Hideaki Kasai. "Density Functional Theory-Based Calculation Shed New Light on the Bizarre Addition of Cysteine Thiol to Dopaquinone." International Journal of Molecular Sciences 22, no. 3 (2021): 1373. http://dx.doi.org/10.3390/ijms22031373.

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Two types of melanin pigments, brown to black eumelanin and yellow to reddish brown pheomelanin, are biosynthesized through a branched reaction, which is associated with the key intermediate dopaquinone (DQ). In the presence of l-cysteine, DQ immediately binds to the –SH group, resulting in the formation of cysteinyldopa necessary for the pheomelanin production. l-Cysteine prefers to bond with aromatic carbons adjacent to the carbonyl groups, namely C5 and C2. Surprisingly, this Michael addition takes place at 1,6-position of the C5 (and to some extent at C2) rather than usually expected 1,4-p

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Wang, Yu Feng, Guang Ye Liu, Xiao Guo Lv, and Zhong Chu Wang. "The Simulation of APF Based on Three-Phase VSI." Applied Mechanics and Materials 397-400 (September 2013): 1901–5. http://dx.doi.org/10.4028/www.scientific.net/amm.397-400.1901.

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In order to restrain harmonic pollution of power grid, the structure and control strategy of APF was researched. The structural parameters and method of direct current control of the most widely used APF with three-phase VSI was discussed. Decoupling control of active and reactive current on the dq plane was realized by dq transforming. Harmonic of load current was detected by Ip-Iq algorithm based on the instantaneous reactive power theory. Double closed-loop control was applied and PWM drive signals of IGBT were got through comparison of triangle wave and modulation wave. The simulation resu

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Abdellahi, Ramin, Mohsen Esmaeili, Mirsami Yeganli, Ali Mokhtarian, Roohallah Alizadehsani, and Paweł Pławiak. "Free vibration characteristics of trapezoidal nanoplate rested on viscoelastic substrate with arbitrary boundary conditions using differential quadrature method." PLOS ONE 20, no. 3 (2025): e0316210. https://doi.org/10.1371/journal.pone.0316210.

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This study investigates the free vibration analysis of trapezoidal nanoplate resting on viscoelastic foundation based on first order shear deformation theory (FSDT) incorporating nonlocal elasticity theory, using differential quadrature (DQ) method. The nanoplate’s governing equations of motion together with various associated boundary conditions have been discretized applying a mapping DQ method in the spatial domain. Then the complex natural frequencies of the trapezoidal nanoplates obtained by solving the eigen value matrix equation. Verification of the study is confirmed by comparing its n

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Nilesh R. More and Sadashiv G. Dapke. "On Fixed Point Theorems in Dislocated Quasi Metric Spaces." International Journal of Scientific Research in Science, Engineering and Technology 12, no. 4 (2025): 185–89. https://doi.org/10.32628/ijsrset2512414.

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The aim of this paper is to establish new fixed point results for certain classes of mappings in the setting of dislocated quasi-metric (dq-metric) spaces by utilizing the concept of orbits around a point. The study focuses on relaxing the conventional completeness assumptions and instead applies orbital completeness, which provides a broader and more flexible framework for analysis. We extend and generalize existing fixed point theorems by considering various contractive conditions under orbital continuity. These generalizations contribute to the ongoing development of fixed point theory in n

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Nandagopal, V., T. S. Balaji Damodhar, P. Vijayapriya, and A. Thamilmaran. "Improving Power Quality by DSTATCOM Based DQ Theory with Soft Computing Techniques." Intelligent Automation & Soft Computing 36, no. 2 (2023): 1315–29. http://dx.doi.org/10.32604/iasc.2023.032039.

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Book chapters on the topic "Dq-theory"

1

Singh, Deepak Kumar, Saibal Manna, and Ashok Kumar Akella. "Control of Three-Phase Grid-Connected Inverter Using dq Axis Theory." In Recent Advances in Power Electronics and Drives. Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-9239-0_13.

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Lamb, D. Q. "Recent Developments in the Theory of AM Her And DQ Her Stars." In Cataclysmic Variables and Low-Mass X-Ray Binaries. Springer Netherlands, 1985. http://dx.doi.org/10.1007/978-94-009-5319-2_21.

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Daouli, Benhaoua Larbi, and Hassan Mana. "Improving Power Quality by Using Active Power Filter Based on DQ Frame of Reference Theory." In Lecture Notes in Networks and Systems. Springer Nature Switzerland, 2025. https://doi.org/10.1007/978-3-031-80301-7_30.

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Katta, Pradeep, Arun, D. Atul Kumar Mishra, and H. Vignesh. "PID Control of SAPF for Elimination of Harmonics in Power System Based on DQ Reference Frame Theory." In Lecture Notes in Electrical Engineering. Springer India, 2014. http://dx.doi.org/10.1007/978-81-322-2119-7_66.

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Lawson, Sheron, and Claretha Hughes. "Proposing a Diversity Intelligence Training Framework for Leaders and Managers to Attract, Maintain, and Balance Mature Workers." In Strategies for Attracting, Maintaining, and Balancing a Mature Workforce. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-7998-2277-6.ch001.

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The workforce is becoming more diverse with the increasing number of mature workers delaying retirement and working beyond the legal retirement age. Retaining mature workers in organizations can be challenging. Training leaders and managers in diversity intelligence (DQ) has the potential to lead to better and more effective supervision of diverse employees. Competent and skilled managers and leaders who are trained in DQ will be more able to help in the attracting, retaining, and balancing mature workers. The chapter proposes using the three learning processes of enactive, iconic, and symboli

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Lawson, Sheron, and Claretha Hughes. "Proposing a Diversity Intelligence Training Framework for Leaders and Managers to Attract, Maintain, and Balance Mature Workers." In Research Anthology on Changing Dynamics of Diversity and Safety in the Workforce. IGI Global, 2022. http://dx.doi.org/10.4018/978-1-6684-2405-6.ch018.

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The workforce is becoming more diverse with the increasing number of mature workers delaying retirement and working beyond the legal retirement age. Retaining mature workers in organizations can be challenging. Training leaders and managers in diversity intelligence (DQ) has the potential to lead to better and more effective supervision of diverse employees. Competent and skilled managers and leaders who are trained in DQ will be more able to help in the attracting, retaining, and balancing mature workers. The chapter proposes using the three learning processes of enactive, iconic, and symboli

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A. Adepoju, Jerome. "Effectiveness of Basic Sets of Goncarov and Related Polynomials." In Recent Advances in Polynomials [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.99411.

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The Chapter presents diverse but related results to the theory of the proper and generalized Goncarov polynomials. Couched in the language of basic sets theory, we present effectiveness properties of these polynomials. The results include those relating to simple sets of polynomials whose zeros lie in the closed unit disk U=z:z≤1.. They settle the conjecture of Nassif on the exact value of the Whittaker constant. Results on the proper and generalized Goncarov polynomials which employ the q-analogue of the binomial coefficients and the generalized Goncarov polynomials belonging to the Dq- deriv

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Weber Jens H., Price Morgan, and Davies Iryna. "Taming the Data Quality Dragon – A Theory and Method for Data Quality by Design." In Studies in Health Technology and Informatics. IOS Press, 2015. https://doi.org/10.3233/978-1-61499-564-7-928.

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A lack of data quality (DQ) is often a significant inhibitor impeding the realization of cost and quality benefits expected from Clinical Information Systems (CIS). Attaining and sustaining DQ in CIS has been a multi-faceted and elusive goal. The current literature on DQ in health informatics mainly consists of empirical studies and practitioners' reports, but often lack a holistic approach to addressing DQ &lsquo;by design&rsquo;. This paper seeks to present a general framework for clinical DQ, which blends foundational engineering theories with concepts and methods from health inform

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Hughes, Leslie P., Patrick M. J. Szell, Helen Blade, and Steven P. Brown. "NMR Crystallography in Pharmaceutical Development." In Magnetic Resonance and its Applications in Drug Formulation and Delivery. Royal Society of Chemistry, 2024. http://dx.doi.org/10.1039/9781788019996-00179.

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NMR crystallography is the combined use of experimental solid-state nuclear magnetic resonance (NMR) with density-functional theory (DFT) calculation of NMR parameters for a structure, as obtained, for example, by complementary diffraction or crystal structure prediction (CSP) approaches. We give an overview of how NMR crystallography can be applied to active pharmaceutical ingredients (APIs) and their formulations, including considering polymorphism, solvates and hydrates, salt and co-crystal formation, and amorphous dispersions. Specifically, the use of the gauge-including projector augmente

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Hughes, L. P., P. M. J. Szell, H. Blade, and S. P. Brown. "NMR Crystallography in Pharmaceutical Development." In Modern NMR Crystallography. Royal Society of Chemistry, 2025. https://doi.org/10.1039/9781837673179-00413.

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NMR crystallography is the combined use of experimental solid-state nuclear magnetic resonance (NMR) with density-functional theory (DFT) calculation of NMR parameters for a structure, as obtained, for example, by complementary diffraction or crystal structure prediction (CSP) approaches. We give an overview of how NMR crystallography can be applied to active pharmaceutical ingredients (APIs) and their formulations, including considering polymorphism, solvates and hydrates, salt and co-crystal formation, and amorphous dispersions. Specifically, the use of the gauge-including projector augmente

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Conference papers on the topic "Dq-theory"

1

Hejripour, F., A. R. Saidi, and S. H. Mirtalaie. "On Shear Correction Factor in Vibration of Annular Sector Plates." In ASME 2010 10th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2010. http://dx.doi.org/10.1115/esda2010-24106.

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In the present study, the shear correction factors are obtained for annular sector plates using Differential Quadrature (DQ) Method. Based on the three-dimensional elasticity theory, the governing equations of motion for an annular sector plate are obtained. These equations together with the boundary conditions are discretized by employing DQ method. Following DQ procedure an eigenvalue problem is obtained that represents the natural frequencies and mode shapes of the plate. This procedure is also investigated for the analysis of the annular sector plates based on FSDT. The frequency of the fi

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2

Meier, F., and J. Soulard. "dq theory applied to a permanent magnet synchronous machine with concentrated windings." In 4th IET International Conference on Power Electronics, Machines and Drives (PEMD 2008). IEE, 2008. http://dx.doi.org/10.1049/cp:20080510.

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Suru, Constantin Vlad, Cristina Alexandra Patrascu, and Mihaita Linca. "The synchronous fundamental dq frame theory implementation and adaptation for the active filtering." In 2014 International Conference on Applied and Theoretical Electricity (ICATE). IEEE, 2014. http://dx.doi.org/10.1109/icate.2014.6972654.

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Lira, J., C. Nunez, V. Cardenas, and R. Alvarez. "Voltage Sag Compensation in High-Quality AC/DC Converters Using the Single-Phase DQ Theory." In 2006 IEEE International Power Electronics Congress. IEEE, 2006. http://dx.doi.org/10.1109/ciep.2006.312118.

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BEY, Mohamed, Rabah ARARIA, and Abderrahmane BERKANI. "Self-Tuning STATCOM Controller Design Using dq-Theory and Adaptive Interaction for Reactive Power Compensation." In 2024 2nd International Conference on Electrical Engineering and Automatic Control (ICEEAC). IEEE, 2024. http://dx.doi.org/10.1109/iceeac61226.2024.10576401.

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Crosier, Russell, Shuo Wang, and Yongbin Chu. "Modeling of a grid-connected, multifunctional electric vehicle charging station in active filter mode with DQ theory." In 2012 IEEE Energy Conversion Congress and Exposition (ECCE). IEEE, 2012. http://dx.doi.org/10.1109/ecce.2012.6342496.

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Andérez González, Jorge, and Riccardo Vescovini. "Fast Methods for Nonlinear Vibration Analysis of Variable Stiffness Panels." In ASME 2021 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/imece2021-68933.

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Abstract This paper presents an approach for the nonlinear vibration analysis of Variable Stiffness (VS) plates based on Third-order Shear Deformation Theory (TSDT) along with a mixed variational formulation. The unknowns are expanded using the Ritz method, whilst time dependency is handled by referring to the Differential Quadrature (DQ) and the Harmonic Balance (HB) methods. The proposed framework guarantees reduced computational time, which is of particular interest when exploring the large design space offered by variable stiffness configurations. Validation against reference results is pr

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Mirtalaie, S. H., and M. A. Hajabasi. "Large Amplitude Free Vibration Analysis of Thin Annular Sector Plates Using Differential Quadrature Method." In ASME 2010 10th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2010. http://dx.doi.org/10.1115/esda2010-24604.

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In this paper, the Differential Quadrature Method (DQM) is used to study the large amplitude free vibration of thin annular sector plates. The geometrical nonlinear governing equations of motion are derived based on the classical plate theory and using the von Karman nonlinear strain-displacement relationships. Following the DQ-procedure and employing the concept of new degrees of freedom a nonlinear eigenvalue problem is obtained which is solved iteratively and nonlinear natural frequencies of the plate are obtained. The results show a very good convergence and they are compared with the avai

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Gonzalez, Mario, Victor Cardenas, and Ciro Nunez. "An Optimal Selection of the References Generation Scheme for the DQ Theory to Compensate Unbalance, Reactive Power, Harmonic Distortion and Non Characteristic Harmonics." In 2006 IEEE International Power Electronics Congress. IEEE, 2006. http://dx.doi.org/10.1109/ciep.2006.312125.

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Hu, Tiejun, and Won-Jong Kim. "Modeling and Multivariable Control of a High Precision Multidimensional Positioner." In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-59536.

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A precision positioner using a novel concentrated-field permanent-magnet matrix is presented in this paper. This integrated multidimensional positioner is actuated by three novel planar motors, which are attached on the bottom of the positioner. It can generate all 6-DOF motions with only a single moving part. The integrated multi-dimensional positioner offers a unique combination of range and precision: a planar traveling range of 160 mm × 160 mm with a position resolution of 30 nm and position noise of 10 nm rms. The repeatability of the positioner is as good as 30 nm. The maximum velocity a

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