Relevant bibliographies by topics / Solution's accuracy

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Solution's accuracy'

Author: Grafiati
Published: 4 June 2021
Last updated: 17 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Solution's accuracy.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Solution's accuracy"

1

Bae, Tae-Suk, Dorota Grejner-Brzezinska, and Jay Hyoun Kwon. "Efficient LEO Dynamic Orbit Determination with Triple Differenced GPS Carrier Phases." Journal of Navigation 60, no. 2 (April 20, 2007): 217–32. http://dx.doi.org/10.1017/s0373463307004171.

Full text
Abstract:
The dynamic precise orbit determination of a Low Earth Orbit satellite using triple differenced GPS phases is presented in this study. The atmospheric drag parameters are estimated to compensate the incomplete atmosphere model for better precision of the orbit solution. In addition, the empirical force parameters, especially once- and twice-per-revolution components, along with the new IERS Conventions and models to compute the perturbing forces are introduced to absorb the remaining unmodelled forces. The optimal arc length for the parameterization and the data processing strategy are also tested and analyzed for the best orbit solutions. The triple differencing technique enables fast and efficient orbit estimation, because no ambiguity resolution and cycle slip detection are required. With the triple differenced ion-free GPS phase observables, the orbit and the velocity solutions for 24 hours of CHAMP are calculated; they compare with the published Rapid Science Orbit with the accuracy of 8 cm and 0·12 mm/s in 3D RMS for the orbit and the velocity, respectively, and are statistically consistent with the RSO when it is not better than 4 cm in terms of an absolute accuracy. The approach presented here provides an efficient and simple, but robust, alternative approach, while the solution's accuracy is still comparable to the double-difference results.
APA, Harvard, Vancouver, ISO, and other styles
2

Rojas, Camilo, Niels Poulsen, Mileva Van Tuyl, Daniel Vargas, Zipporah Cohen, Joe Paradiso, Pattie Maes, Kevin Esvelt, and Fadel Adib. "A Scalable Solution for Signaling Face Touches to Reduce the Spread of Surface-based Pathogens." Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies 5, no. 1 (March 19, 2021): 1–22. http://dx.doi.org/10.1145/3448121.

Full text
Abstract:
Hand-to-Face transmission has been estimated to be a minority, yet non-negligible, vector of COVID-19 transmission and a major vector for multiple other pathogens. At the same time, as it cannot be effectively addressed with mainstream protection measures, such as wearing masks or tracing contacts, it remains largely untackled. To help address this issue, we have developed Saving Face - an app that alerts users when they are about to touch their faces, by analyzing the distortion patterns in the ultrasound signal emitted by their earphones. The system only relies on pre-existing hardware (a smartphone with generic earphones), which allows it to be rapidly scalable to billions of smartphone users worldwide. This paper describes the design, implementation and evaluation of the system, as well as the results of a user study testing the solution's accuracy, robustness, and user experience during various day-to-day activities (93.7% Sensitivity and 91.5% Precision, N=10). While this paper focuses on the system's application to detecting hand-to-face gestures, the technique can also be applicable to other types of gestures and gesture-based applications.
APA, Harvard, Vancouver, ISO, and other styles
3

Aeffner, Famke, Kristin Wilson, Nathan T. Martin, Joshua C. Black, Cris L. Luengo Hendriks, Brad Bolon, Daniel G. Rudmann, et al. "The Gold Standard Paradox in Digital Image Analysis: Manual Versus Automated Scoring as Ground Truth." Archives of Pathology & Laboratory Medicine 141, no. 9 (May 30, 2017): 1267–75. http://dx.doi.org/10.5858/arpa.2016-0386-ra.

Full text
Abstract:
Context.— Novel therapeutics often target complex cellular mechanisms. Increasingly, quantitative methods like digital tissue image analysis (tIA) are required to evaluate correspondingly complex biomarkers to elucidate subtle phenotypes that can inform treatment decisions with these targeted therapies. These tIA systems need a gold standard, or reference method, to establish analytical validity. Conventional, subjective histopathologic scores assigned by an experienced pathologist are the gold standard in anatomic pathology and are an attractive reference method. The pathologist's score can establish the ground truth to assess a tIA solution's analytical performance. The paradox of this validation strategy, however, is that tIA is often used to assist pathologists to score complex biomarkers because it is more objective and reproducible than manual evaluation alone by overcoming known biases in a human's visual evaluation of tissue, and because it can generate endpoints that cannot be generated by a human observer. Objective.— To discuss common visual and cognitive traps known in traditional pathology-based scoring paradigms that may impact characterization of tIA-assisted scoring accuracy, sensitivity, and specificity. Data Sources.— This manuscript reviews the current literature from the past decades available for traditional subjective pathology scoring paradigms and known cognitive and visual traps relevant to these scoring paradigms. Conclusions.— Awareness of the gold standard paradox is necessary when using traditional pathologist scores to analytically validate a tIA tool because image analysis is used specifically to overcome known sources of bias in visual assessment of tissue sections.
APA, Harvard, Vancouver, ISO, and other styles
4

WU, S. C., H. O. ZHANG, C. ZHENG, and J. H. ZHANG. "A HIGH PERFORMANCE LARGE SPARSE SYMMETRIC SOLVER FOR THE MESHFREE GALERKIN METHOD." International Journal of Computational Methods 05, no. 04 (December 2008): 533–50. http://dx.doi.org/10.1142/s0219876208001613.

Full text
Abstract:
One main disadvantage of meshfree methods is that their memory requirement and computational cost are much higher than those of the usual finite element method (FEM). This paper presents an efficient and reliable solver for the large sparse symmetric positive definite (SPD) system resulting from the element-free Galerkin (EFG) approach. A compact mathematical model of heat transfer problems is first established using the EFG procedure. Based on the widely used Successive Over-Relaxation–Preconditioned Conjugate Gradient (SSOR–PCG) scheme, a novel solver named FastPCG is then proposed for solving the SPD linear system. To decrease the computational time in each iteration step, a new algorithm for realizing multiplication of the global stiffness matrix by a vector is presented for this solver. The global matrix and load vector are changed in accordance with a special rule and, in this way, a large account of calculation is avoided on the premise of not decreasing the solution's accuracy. In addition, a double data structure is designed to tackle frequent and unexpected operations of adding or removing nodes in problems of dynamic adaptive or moving high-gradient field analysis. An information matrix is also built to avoid drastic transformation of the coefficient matrix caused by the initial-boundary values. Numerical results show that the memory requirement of the FastPCG solver is only one-third of that of the well-developed AGGJE solver, and the computational cost is comparable with the traditional method with the increas of solution scale and order.
APA, Harvard, Vancouver, ISO, and other styles
5

Wee, Tae-Kwon. "A variational regularization of Abel transform for GPS radio occultation." Atmospheric Measurement Techniques 11, no. 4 (April 6, 2018): 1947–69. http://dx.doi.org/10.5194/amt-11-1947-2018.

Full text
Abstract:
Abstract. In the Global Positioning System (GPS) radio occultation (RO) technique, the inverse Abel transform of measured bending angle (Abel inversion, hereafter AI) is the standard means of deriving the refractivity. While concise and straightforward to apply, the AI accumulates and propagates the measurement error downward. The measurement error propagation is detrimental to the refractivity in lower altitudes. In particular, it builds up negative refractivity bias in the tropical lower troposphere. An alternative to AI is the numerical inversion of the forward Abel transform, which does not incur the integration of error-possessing measurement and thus precludes the error propagation. The variational regularization (VR) proposed in this study approximates the inversion of the forward Abel transform by an optimization problem in which the regularized solution describes the measurement as closely as possible within the measurement's considered accuracy. The optimization problem is then solved iteratively by means of the adjoint technique. VR is formulated with error covariance matrices, which permit a rigorous incorporation of prior information on measurement error characteristics and the solution's desired behavior into the regularization. VR holds the control variable in the measurement space to take advantage of the posterior height determination and to negate the measurement error due to the mismodeling of the refractional radius. The advantages of having the solution and the measurement in the same space are elaborated using a purposely corrupted synthetic sounding with a known true solution. The competency of VR relative to AI is validated with a large number of actual RO soundings. The comparison to nearby radiosonde observations shows that VR attains considerably smaller random and systematic errors compared to AI. A noteworthy finding is that in the heights and areas that the measurement bias is supposedly small, VR follows AI very closely in the mean refractivity deserting the first guess. In the lowest few kilometers that AI produces large negative refractivity bias, VR reduces the refractivity bias substantially with the aid of the background, which in this study is the operational forecasts of the European Centre for Medium-Range Weather Forecasts (ECMWF). It is concluded based on the results presented in this study that VR offers a definite advantage over AI in the quality of refractivity.
APA, Harvard, Vancouver, ISO, and other styles
6

NAKAMURA, Susumu, and Masaaki KUBOTA. "Accuracy of pH standard solutions." Bunseki kagaku 36, no. 5 (1987): T58—T60. http://dx.doi.org/10.2116/bunsekikagaku.36.5_t58.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

FLOURI, EVANGELIA T., JOHN A. EKATERINARIS, and NIKOLAOS A. KAMPANIS. "HIGH-ORDER ACCURATE NUMERICAL SCHEMES FOR THE PARABOLIC EQUATION." Journal of Computational Acoustics 13, no. 04 (December 2005): 613–39. http://dx.doi.org/10.1142/s0218396x05002888.

Full text
Abstract:
Efficient, high-order accurate methods for the numerical solution of the standard (narrow-angle) parabolic equation for underwater sound propagation are developed. Explicit and implicit numerical schemes, which are second- or higher-order accurate in time-like marching and fourth-order accurate in the space-like direction are presented. The explicit schemes have severe stability limitations and some of the proposed high-order accurate implicit methods were found conditionally stable. The efficiency and accuracy of various numerical methods are evaluated for Cartesian-type meshes. The standard parabolic equation is transformed to body fitted curvilinear coordinates. An unconditionally stable, implicit finite-difference scheme is used for numerical solutions in complex domains with deformed meshes. Simple boundary conditions are used and the accuracy of the numerical solutions is evaluated by comparing with an exact solution. Numerical solutions in complex domains obtained with a finite element method show excellent agreement with results obtained with the proposed finite difference methods.
APA, Harvard, Vancouver, ISO, and other styles
8

Arefin, Mohammad Asif, Biswajit Gain, and Rezaul Karim. "Accuracy Analysis on Solution of Initial Value Problems of Ordinary Differential Equations for Some Numerical Methods with Different Step Sizes." International Annals of Science 10, no. 1 (March 7, 2021): 118–33. http://dx.doi.org/10.21467/ias.10.1.118-133.

Full text
Abstract:
In this article, three numerical methods namely Euler’s, Modified Euler, and Runge-Kutta method have been discussed, to solve the initial value problem of ordinary differential equations. The main goal of this research paper is to find out the accurate results of the initial value problem (IVP) of ordinary differential equations (ODE) by applying the proposed methods. To achieve this goal, solutions of some IVPs of ODEs have been done with the different step sizes by using the proposed three methods, and solutions for each step size are analyzed very sharply. To ensure the accuracy of the proposed methods and to determine the accurate results, numerical solutions are compared with the exact solutions. It is observed that numerical solutions are best fitted with exact solutions when the taken step size is very much small. Consequently, all the proposed three methods are quite efficient and accurate for solving the IVPs of ODEs. Error estimation plays a significant role in the establishment of a comparison among the proposed three methods. On the subject of accuracy and efficiency, comparison is successfully implemented among the proposed three methods.
APA, Harvard, Vancouver, ISO, and other styles
9

Haji-Sheikh, A., and J. V. Beck. "Green’s Function Partitioning in Galerkin-Based Integral Solution of the Diffusion Equation." Journal of Heat Transfer 112, no. 1 (February 1, 1990): 28–34. http://dx.doi.org/10.1115/1.2910360.

Full text
Abstract:
A procedure to obtain accurate solutions for many transient conduction problems in complex geometries using a Galerkin-based integral (GBI) method is presented. The nonhomogeneous boundary conditions are accommodated by the Green’s function solution technique. A Green’s function obtained by the GBI method exhibits excellent large-time accuracy. It is shown that the time partitioning of the Green’s function yields accurate small-time and large-time solutions. In one example, a hollow cylinder with convective inner surface and prescribed heat flux at the outer surface is considered. Only a few terms for both large-time and small-time solutions are sufficient to produce results with excellent accuracy. The methodology used for homogeneous solids is modified for application to complex heterogeneous solids.
APA, Harvard, Vancouver, ISO, and other styles
10

Wang, Xiao Dan, and Guang Yu Shi. "Evaluation of Various Laminated Plate Theories Accounting for Interlaminar Transverse Shear Stress Continuity." Advanced Materials Research 716 (July 2013): 119–26. http://dx.doi.org/10.4028/www.scientific.net/amr.716.119.

Full text
Abstract:
Based on a unified form of the plate kinematics in terms of the transverse shear functions and the Heaviside step function, the analytical solutions of laminated plates corresponding to a number of higher-order shear deformation plate theories are solved in this paper. The accuracy assessment of these higher-order laminated plate theories is conducted by comparing the resulting analytical solutions with the elasticity solutions and finite element results. The accuracy study shows that the interlaminar shear stress continuity condition is very important for the accurate prediction of the transverse shear stresses across the laminated plate thickness. The comparison study also indicates that the new laminated plate theory accounting for the interlaminar transverse shear stress continuity proposed by the authors yields both very accurate displacements and accurate stresses. This new higher-order laminated plate theory can be efficiently used in the finite element analysis of laminated composite plates since it uses the same five field variables as those used in the first-order shear deformation plate theory.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Solution's accuracy"

1

Fabbri, Luca. "Computing primal solutions with exact arithmetics in SCIP." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amslaurea.unibo.it/8541/.

Full text
Abstract:
The research for exact solutions of mixed integer problems is an active topic in the scientific community. State-of-the-art MIP solvers exploit a floating- point numerical representation, therefore introducing small approximations. Although such MIP solvers yield reliable results for the majority of problems, there are cases in which a higher accuracy is required. Indeed, it is known that for some applications floating-point solvers provide falsely feasible solutions, i.e. solutions marked as feasible because of approximations that would not pass a check with exact arithmetic and cannot be practically implemented. The framework of the current dissertation is SCIP, a mixed integer programs solver mainly developed at Zuse Institute Berlin. In the same site we considered a new approach for exactly solving MIPs. Specifically, we developed a constraint handler to plug into SCIP, with the aim to analyze the accuracy of provided floating-point solutions and compute exact primal solutions starting from floating-point ones. We conducted a few computational experiments to test the exact primal constraint handler through the adoption of two main settings. Analysis mode allowed to collect statistics about current SCIP solutions' reliability. Our results confirm that floating-point solutions are accurate enough with respect to many instances. However, our analysis highlighted the presence of numerical errors of variable entity. By using the enforce mode, our constraint handler is able to suggest exact solutions starting from the integer part of a floating-point solution. With the latter setting, results show a general improvement of the quality of provided final solutions, without a significant loss of performances.
APA, Harvard, Vancouver, ISO, and other styles
2

Gooze, Aaron Isaac. "Real-time transit information accuracy: impacts and proposed solutions." Thesis, Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/47638.

Full text
Abstract:
When presented in a practical format, real-time transit information can improve sustainable travel methods by enhancing the transit experience. Larger shifts towards public transportation have cascading effects on the environment, health and urban form. The research will identify the positive shift realized by the continued development of a set of real-time transit information tools, specifically in the Seattle region. In addition, it will analyze real-time prediction errors and their effects on the rider experience. Three years after the development of location-aware mobile applications for OneBusAway - a suite of real-time information tools - a survey of current users was conducted by the author in 2012 in order to compare the results to a 2009 study. The results show significant positive shifts in satisfaction with transit, perceptions of safety and ridership frequency as a result of the increased use of real-time arrival information. However, the research will also provide a perspective of the margin of error riders come to expect and the negative effects resulting from inaccuracies with the real-time data. While riders on average will ride less when they have experienced errors, a robust issue-reporting system as well as the resolution of the error can mitigate the initial negative effects. In response, the research provides a framework for a crowd-sourced error reporting process in order to improve the level of accuracy by means of a Transit Ambassador Program. Finally, a pilot program developed by the author is assessed against this framework and insight is provided within the context of the real-time information system.
APA, Harvard, Vancouver, ISO, and other styles
3

Davda, Kinner. "Accuracy in hip surgery : assessment, consequence and solution." Thesis, Imperial College London, 2015. http://hdl.handle.net/10044/1/29761.

Full text
Abstract:
Hip arthroplasty is the most common and successful surgical treatment for the management of hip osteoarthrosis. However, complications arising from technical error in analysing the native hip, aswell as the position of the hip prosthesis can result in a suboptimal outcome for the patient. This thesis principally examines acetabular component orientation, investigating the use of technology in this critical aspect of hip arthroplasty surgery. In the first study, navigation technology is used to assess the performance of a current cohort of training and senior orthopaedic surgeons in a simulated surgical setting. A wide range of error in orientating an acetabular cup orientation to a target position is demonstrated. The second study seeks to establish a novel method of delineating the femoral neck axis in 3D using a sample of normal hip CT scans. Using such a proximal femoral frame of reference allows a standardised approach to assessing normal and abnormal hip morphology. The articular margin of the femoral head is shown to have a wave like pattern that consists of an anterior and posterior facet. The third study compares 2D and 3D measurements of inclination and version of acetabular components, finding a critical difference between the two in version measurements and that 3D measurements are more reliable. The thesis continues by examining the current methodology of analysing the concentration of cobalt and chromium metal ions in the joint fluid from a cohort of symptomatic patients with a metal on metal hip arthroplasty. A more robust laboratory method of processing fluid samples using a digestive oxidative method is presented. The relationship between concentrations of metal ion levels in joint fluid and several clinical parameters is investigated with no clear association shown, suggesting joint fluid in itself cannot be used as a marker for a failing metal on metal hip. The thesis concludes by comparing navigation technology to conventional 'freehand' method in orientating an acetabular component in a group of patients undergoing metal on metal hip resurfacing. The results suggest that navigation technology may substantially improve surgeon error in this task. Technology and three dimensional imaging can play a vital role in improving the accuracy of orientating an acetabular component in hip surgery. It can be employed in the pre-operative stages to assess trainee performance, intra-operatively to reduce surgical error and post operatively to investigate surgeon accuracy on CT imaging.
APA, Harvard, Vancouver, ISO, and other styles
4

Kruk, Serge. "High accuracy algorithms for the solutions of semidefinite linear programs." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/NQ60548.pdf.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Bilodeau, Bernard. "Accuracy of a truncated barotropic spectral model : numerical versus analytical solutions." Thesis, McGill University, 1985. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=66037.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

García-Blanco, Raquel. "Efficient solvers for power flow equations : parametric solutions with accuracy control assessment." Doctoral thesis, Universitat Politècnica de Catalunya, 2017. http://hdl.handle.net/10803/458887.

Full text
Abstract:
The Power Flow model is extensively used to predict the behavior of electric grids and results in solving a nonlinear algebraic system of equations. Modeling the grid is essential for design optimization and control. Both applications require a fast response for multiple queries to a parametric family of power flow problems. Different solvers have been introduced especially designed for the algebraic nonlinear power flow equations, providing efficient solutions for single problems, even when the number of degrees of freedom is considerably large. However, there is no existing methodology providing an explicit solution of the Parametric Power Flow problem (viz. a computational vademecum, explicit in terms of the parameters). This work aims precisely at designing algorithms producing computational vademecums for the Parametric Power Flow problem. Once these solutions are available, solving for different values of the parameters is an extremely fast (real-time) post-process and therefore both the optimal design and the control problem can readily be addressed. In a first phase, a new family of iteratives solvers for the non-parametric version of the problem is devised. The method is based on a hybrid formulation of the problem combined with an alternated search directions scheme. These methods are designed such that it can be generalized to deal with the parametric version of the problem following a Proper Generalized Decomposition (PGD) strategy. The solver for the parametric problem is conceived by performing the operations involving the unknowns in a PGD fashion. The algorithm follows the basic steps of the algebraic solver, but some operations are carried out in a PGD framework, that is requiring a nested iterative algorithm. The PGD solver is accompanied with an error assessment technique that allows monitoring the convergence of the iterative procedures and deciding the number of terms required to meet the accuracy prescriptions. Different examples of realistic grids and standard benchmark tests are used to demonstrate the performance of the proposed methodologies.
El modelo de flujo de potencias se usa para predecir el comportamiento de redes eléctricas y desemboca en la resolución de un sistema de ecuaciones algebraicas no lineales. Modelar una red es esencial para optimizar su diseño y control. Ambas aplicaciones requieren una respuesta rápida a las múltiples peticiones de una familia paramétrica de problemas de flujo de potencias. Diversos métodos de resolución se diseñaron especialmente para resolver la versión algebraica de las ecuaciones de flujo de potencias. Sin embargo, no existe ninguna metodología que proporcione una solución explícita al problema paramétrico de flujo de potencias (esto quiere decir, un vademecum computacional explícito en términos de los parámetros). Esta tesis tiene como objetivo diseñar algoritmos que produzcan vademecums para el problema paramétrico de flujo de potencias. Una vez que las soluciones están disponibles, resolver problemas para diferentes valores de los parámetros es un posproceso extremadamente rápido (en tiempo real) y por lo tanto los problemas de diseño óptimo y control se pueden resolver inmediatamente. En la primera fase, una nueva familia de métodos de resolución iterativos para la versión algebraica del problema se construye. El método se basa en una formulación híbrida del problema combinado con un esquema de direcciones alternadas. Estos métodos se han diseñado para generalizarlos de forma que puedan resolver la versión paramétrica del problema siguiendo una estrategia llamada Descomposición Propia Generalizada (PGD). El método de resolución para el problema paramétrico calcula las incógnitas paramétricas usando la técnica PGD. El algoritmo sigue los mismo pasos que el algoritmo algebraico, pero algunas operaciones se llevan a cabo en el ambiente PGD, esto requiere algoritmos iterativos anidados. El método de resolución PGD se acompaña con una evaluación del error cometido permitiendo monitorizar la convergencia de los procesos iterativos y decidir el número de términos que requiere la solución para alcanzar la precisión preescrita. Diferentes ejemplos de redes reales y tests estándar se usan para demostrar el funcionamiento de las metodologías propuestas.
APA, Harvard, Vancouver, ISO, and other styles
7

Capper, Steven David. "High Accuracy Methods for the Solution to Two Point Boundray Value." Thesis, Imperial College London, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.498602.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Liu, Yang. "Improving the Accuracy of Variable Selection Using the Whole Solution Path." Bowling Green State University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1435858170.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Veluri, Subrahmanya Pavan Kumar. "Code Verification and Numerical Accuracy Assessment for Finite Volume CFD Codes." Diss., Virginia Tech, 2010. http://hdl.handle.net/10919/28715.

Full text
Abstract:
A detailed code verification study of an unstructured finite volume Computational Fluid Dynamics (CFD) code is performed. The Method of Manufactured Solutions is used to generate exact solutions for the Euler and Navier-Stokes equations to verify the correctness of the code through order of accuracy testing. The verification testing is performed on different mesh types which include triangular and quadrilateral elements in 2D and tetrahedral, prismatic, and hexahedral elements in 3D. The requirements of systematic mesh refinement are discussed, particularly in regards to unstructured meshes. Different code options verified include the baseline steady state governing equations, transport models, turbulence models, boundary conditions and unsteady flows. Coding mistakes, algorithm inconsistencies, and mesh quality sensitivities uncovered during the code verification are presented. In recent years, there has been significant work on the development of algorithms for the compressible Navier-Stokes equations on unstructured grids. One of the challenging tasks during the development of these algorithms is the formulation of consistent and accurate diffusion operators. The robustness and accuracy of diffusion operators depends on mesh quality. A survey of diffusion operators for compressible CFD solvers is conducted to understand different formulation procedures for diffusion fluxes. A patch-wise version of the Method of Manufactured Solutions is used to test the accuracy of selected diffusion operators. This testing of diffusion operators is limited to cell-centered finite volume methods which are formally second order accurate. These diffusion operators are tested and compared on different 2D mesh topologies to study the effect of mesh quality (stretching, aspect ratio, skewness, and curvature) on their numerical accuracy. Quantities examined include the numerical approximation errors and order of accuracy associated with face gradient reconstruction. From the analysis, defects in some of the numerical formulations are identified along with some robust and accurate diffusion operators.
Ph. D.
APA, Harvard, Vancouver, ISO, and other styles
10

Ryan, Keegan P. "Experimental Testing of the Accuracy of Attitude Determination Solutions for a Spin-Stabilized Spacecraft." DigitalCommons@USU, 2011. https://digitalcommons.usu.edu/etd/1007.

Full text
Abstract:
Spin-stabilized spacecraft generally rely on sun and three-axis magnetic field sensor measurements for attitude determination. This study experimentally determines the total accuracy of attitude determination solutions using modest quality sensors. This was ac- complished by having a test spacecraft collect data during spinning motions. The data was then post-processed to find the attitude estimates, which were then compared to the exper- imentally measured attitude. This same approach will be used to test the accuracy of the attitude determination system of the DICE spacecraft to be built by SDL/USU.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "Solution's accuracy"

1

Smith, James. Highly accurate beam torsion solutions using the p-Version finite element method. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1996.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

James P. Smith - undifferentiated. Highly accurate beam torsion solutions using the p-version finite element method. [Washington, D.C.?: National Aeronautics and Space Administration, 1996.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

Rüde, Ulrich. Accurate numerical solution of convection-diffusion problems: Final report on Grant I/72342 of Volkswagen Foundation. Novosibirsk: Publishing House of Institute of Mathematics, 2001.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

Bagajewicz, Miguel J. Smart process plants: Software and hardware solutions for accurate data and profitable operations. New York: McGraw-Hill, 2010.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

Anderson, W. Kyle. Accurate solutions, parameter studies, and comparisons for the Euler and potential flow equations. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1988.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

Bagajewicz, Miguel J. Smart process plants: Software and hardware solutions for accurate data and profitable operations. New York: McGraw-Hill, 2010.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
7

Mavriplis, Dimitri J. Accurate multigrid solution of the Euler equations on unstructured and adaptive meshes. Hampton, Va: ICASE, 1988.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

Soh, Woo Y. Direct coupling methods for time-accurate solution of incompressible Navier-Stokes equations. [Washington, DC]: National Aeronautics and Space Administration, 1992.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
9

Sidilkover, David. A new time-space accurate scheme for hyperbolic problems I: Quasi-explicit case. Hampton, VA: Institute for Computer Applications in Science and Engineering, NASA Langley Research Center, 1998.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
10

Diskin, Boris. Solving upwind-biased discretizations II: Multigrid solver using semicoarsening. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1999.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Book chapters on the topic "Solution's accuracy"

1

Trager, B. M. "Computer algebra and exact solutions to systems of polynomial equations." In Accurate Scientific Computations, 181. Berlin, Heidelberg: Springer Berlin Heidelberg, 1986. http://dx.doi.org/10.1007/3-540-16798-6_10.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Skalski, Andrzej, and Dionizy Bialo. "Accuracy of the Parts from Iron Powder Manufactured by Injection Moulding." In Advanced Mechatronics Solutions, 261–66. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-23923-1_39.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Mikuła, Marta, and Tomasz Kozacki. "Accurate DHM method for topography characterization of reflective microoptics." In Advanced Mechatronics Solutions, 541–46. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-23923-1_79.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Steigenberger, Peter, Thomas Artz, Sarah Böckmann, Rainer Kelm, Rolf König, Barbara Meisel, Horst Müller, et al. "GGOS-D Consistent, High-Accuracy Technique-Specific Solutions." In Advanced Technologies in Earth Sciences, 545–54. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-10228-8_45.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Li, Hu, and Jin Huang. "High Accuracy Solutions of the Modified Helmholtz Equation." In Advances in Intelligent Systems and Computing, 29–37. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-38789-5_13.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Stummel, F. "Strict optimal error and residual estimates for the solution of linear algebraic systems by elimination methods in high-accuracy arithmetic." In Accurate Scientific Computations, 119–41. Berlin, Heidelberg: Springer Berlin Heidelberg, 1986. http://dx.doi.org/10.1007/3-540-16798-6_7.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Ivanov, Viktor V. "Solution of Volterra Equations with Pre-Assigned Accuracy." In Applied Optimization, 81–98. Boston, MA: Springer US, 1999. http://dx.doi.org/10.1007/978-1-4615-4062-5_5.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Yu, Guorui, Guangliang Yang, Tongxin Li, Xinhui Han, Shijie Guan, Jialong Zhang, and Guofei Gu. "MinerGate: A Novel Generic and Accurate Defense Solution Against Web Based Cryptocurrency Mining Attacks." In Communications in Computer and Information Science, 50–70. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-33-4922-3_5.

Full text
Abstract:
AbstractWeb-based cryptocurrency mining attacks, also known as cryptojacking, become increasingly popular. A large number of diverse platforms (e.g., Windows, Linux, Android, and iOS) and devices (e.g., PC, smartphones, tablets, and even critical infrastructures) are widely impacted. Although a variety of detection approaches were recently proposed, it is challenging to apply these approaches to attack prevention directly.Instead, in this paper, we present a novel generic and accurate defense solution, called “MinerGate”, against cryptojacking attacks. To achieve the goal, MinerGate is designed as an extension of network gateways or proxies to protect all devices behind it. When attacks are identified, MinerGate can enforce security rules on victim devices, such as stopping the execution of related JavaScript code and alerting victims. Compared to prior approaches, MinerGate does not require any modification of browsers or apps to collect the runtime features. Instead, MinerGate focuses on the semantics of mining payloads (usually written in WebAssembly/asm.js), and semantic-based features.In our evaluation, we first verify the correctness of MinerGate by testing MinerGate in a real environment. Then, we check MinerGate’s performance and confirm MinerGate introduces relatively low overhead. Last, we verify the accuracy of MinerGate. For this purpose, we collect the largest WebAssembly/asm.js related code with ground truth to build our experiment dataset. By comparing prior approaches and MinerGate on the dataset, we find MinerGate achieves better accuracy and coverage (i.e., 99% accuracy and 98% recall). Our dataset will be available online, which should be helpful for more solid understanding of cryptojacking attacks.
APA, Harvard, Vancouver, ISO, and other styles
9

Ivanov, Mikhail Ja. "Accurate Dark Matter Theory and Exact Solutions." In Sources and Detection of Dark Matter and Dark Energy in the Universe, 281–89. Berlin, Heidelberg: Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/978-3-662-04587-9_30.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Kůrková, Věra. "Accuracy of Surrogate Solutions of Integral Equations by Feedforward Networks." In Studies in Computational Intelligence, 91–102. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-03206-1_7.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Solution's accuracy"

1

Radoux, J., and P. Bogaert. "Map legend and response design: how do they affect accuracy of geobia results." In GEOBIA 2016 : Solutions and Synergies. University of Twente Faculty of Geo-Information and Earth Observation (ITC), 2016. http://dx.doi.org/10.3990/2.392.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Vadasz, Peter. "Analytical Prediction of the Transition to Chaos in Lorenz System." In ASME 2008 9th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2008. http://dx.doi.org/10.1115/esda2008-59568.

Full text
Abstract:
The failure of the linear stability analysis to predict accurately the transition point from steady to chaotic solutions in Lorenz equations motivates this study. A weak non-linear solution to the problem is shown to produce an accurate analytical expression for the transition point as long as the validity condition and consequent accuracy of the latter solution is fulfilled. The analytical results are compared to accurate computational solutions showing an excellent fit within the validity domain of the analytical solution.
APA, Harvard, Vancouver, ISO, and other styles
3

Vadasz, Peter. "Analytical Prediction of the Transition to Chaos in Porous Media Natural Convection." In ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-68155.

Full text
Abstract:
The failure of the linear stability analysis to predict accurately the transition point from steady to chaotic solutions in porous media natural convection motivates this study. A weak non-linear solution to the problem is shown to produce an accurate analytical expression for the transition point as long as the validity condition and consequent accuracy of the latter solution is fulfilled. The analytical results are compared to accurate computational solutions showing an excellent fit within the validity domain of the analytical solution.
APA, Harvard, Vancouver, ISO, and other styles
4

Notash, Leila. "Investigation of Wrench Accuracy for Parallel Manipulators." In ASME 2016 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/detc2016-59425.

Full text
Abstract:
In this paper, the wrench accuracy for parallel manipulators is examined and the solution sets of actuator forces/torques are investigated under variations in parameters and data. The subset of solution set that produces platform wrenches within the required lower and upper bounds are modeled using discrete and analytical methods. In addition, the formulation of the solutions that provide any platform wrench within the defined interval is examined. Intersection of these two sets, if any, results in the given interval platform wrench. Moreover, the dependency among the entries of the interval linear systems and its effect on the solution set is considered. The discrete method is based on the discretization of solution set enclosure and validation at each increment, or the collection of the solutions of real linear relations for the discretized interval coefficient matrix and output vector. The analytical method for each solution set is based on the intersection of the pertinent closed half-spaces or the assembly of closed line segments that encompass the solution. Implementation of the methods to identify the solution for actuator forces/torques is presented on example parallel manipulators.
APA, Harvard, Vancouver, ISO, and other styles
5

Prado, D. F. C., and L. M. T. Carvalho. "Application of object-based accuracy assessment for land cover classification using rapideye images in Southeastern Brazil." In GEOBIA 2016 : Solutions and Synergies. University of Twente Faculty of Geo-Information and Earth Observation (ITC), 2016. http://dx.doi.org/10.3990/2.435.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Nejat, Amir, and Ehsan Mirzakhalili. "A Newton-Krylov Algorithm for High-Order Finite Element Computation of Heat Conduction Problems." In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-89131.

Full text
Abstract:
The solution of a high-order conduction problem with different orders of accuracy has been investigated in this paper. The high-order solutions are obtained using Discontinuous Galerkin (DG) finite element method. The problem is solved by implicit Newton-Krylov method for different accuracy orders. The convergence of the implicit technique is investigated in terms of the CPU time. The results show the possibility of achieving an accurate and smooth solution over a coarse mesh when the higher-order discretization is employed.
APA, Harvard, Vancouver, ISO, and other styles
7

Weina, Guo, and Huang Wenjie. "Optical Current Transformer Accuracy Problems and Solutions." In 2010 Asia-Pacific Conference on Power Electronics and Design (APED). IEEE, 2010. http://dx.doi.org/10.1109/apped.2010.19.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Banachowicz, Bartosz, Walter Iandolo, Artur P. Balasinski, Wolfgang Staud, Melody W. Ma, and Jason Sweis. "Accuracy vs. complexity: OPC solutions and tradeoffs." In 19th European Conference on Mask Technology for Integrated Circuits and Microcomponts, edited by Uwe F. W. Behringer. SPIE, 2003. http://dx.doi.org/10.1117/12.514949.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Rastigejev, Yevgenii A., and Samuel Paolucci. "Multiscale Calculations Using an Adaptive Wavelet Algorithm." In ASME 2002 Joint U.S.-European Fluids Engineering Division Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/fedsm2002-31117.

Full text
Abstract:
We present a new wavelet-based adaptive multiresolution representation (WAMR) algorithm for the numerical solution of multiscale evolution problems. Key features of the algorithm are fast procedures for grid rearrangement, computation of derivatives, as well as the ability to minimize the degrees of freedom for a prescribed solution accuracy. To demonstrate the efficiency and accuracy of the algorithm, we use it to solve the two-dimensional benchmark problem of incompressible fluid-flow in a lid-driven cavity at large Reynolds numbers. The numerical experiments demonstrate the great ability of the algorithm to adapt to different scales at different locations and at different times so as to produce accurate solutions at low computational cost. Specifically, we show that solutions of comparable accuracy as the benchmarks are obtained with more than an order of magnitude reduction in degrees of freedom.
APA, Harvard, Vancouver, ISO, and other styles
10

Raffoul, Charbel N., Abdollah S. Nejad, Richard D. Gould, and S. Alan Spring. "An Experimental and Numerical Study of the Isothermal Flowfield Behind a Bluff Body Flameholder." In ASME 1995 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1995. http://dx.doi.org/10.1115/95-gt-102.

Full text
Abstract:
An experimental and numerical investigation was conducted to study the turbulent velocities and stresses behind a 2-D bluff body. Simultaneous three-component laser Doppler velocimeter (LDV) measurements were made in the isothermal incompressible turbulent flowfield downstream of a bluff body placed at midstream in a rectangular test section. Mean velocities and Reynolds stresses were measured at various axial positions. Spanwise velocity measurements indicated that the flow is three dimensional in the recirculation zone of the bluff body. Confidence in the accuracy of the data was gained by calculating the mass fluxes at each axial station. These were found to agree with each other to within ±3%. A parallel Computational Fluid Dynamics (CFD) study was initiated to gauge the predictive accuracy of currently available CFD techniques. Three solutions were computed: a 2-D steady-state solution using the standard k-ε model, a 2-D time-accurate solution using the standard k-ε model, and a 2-D time-accurate solution using a Renormalized-Group (RNG) k-ε turbulence model. The steady-state solution matched poorly with the data, severely underpredicting the Reynolds stresses in the recirculation zone. The time-accurate solutions captured the unsteady vortex shedding from the base of the bluff body, providing a source for the higher Reynolds stresses. The RNG k-ε solution provided the best match to the data.
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Solution's accuracy"

1

Blottner, F. G., and A. R. Lopez. Determination of Solution Accuracy of Numerical Schemes as Part of Code and Calculation Verification. Office of Scientific and Technical Information (OSTI), October 1998. http://dx.doi.org/10.2172/1044.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Shu, Chi-Wang. High Order Accurate Algorithms for Shocks, Rapidly Changing Solutions and Multiscale Problems. Fort Belvoir, VA: Defense Technical Information Center, January 2013. http://dx.doi.org/10.21236/ada583317.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Shu, Chi-Wang. High Order Accurate Algorithms for Shocks, Rapidly Changing Solutions and Multiscale Problems. Fort Belvoir, VA: Defense Technical Information Center, November 2014. http://dx.doi.org/10.21236/ada617663.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Gelmont, Boris, Tatiana Globus, and Igor Sizov. Stability and Physical Accuracy Analysis of the Numerical Solutions to Wigner-Poisson Modeling of Resonant Tunneling Diodes. Fort Belvoir, VA: Defense Technical Information Center, March 2013. http://dx.doi.org/10.21236/ada581721.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Leonid Kunyansky, PhD. ASYMPTOTICALLY OPTIMAL HIGH-ORDER ACCURATE ALGORITHMS FOR THE SOLUTION OF CERTAIN ELLIPTIC PDEs. Office of Scientific and Technical Information (OSTI), November 2008. http://dx.doi.org/10.2172/953765.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Yu, Haichao, Haoxiang Li, Honghui Shi, Thomas S. Huang, and Gang Hua. Any-Precision Deep Neural Networks. Web of Open Science, December 2020. http://dx.doi.org/10.37686/ejai.v1i1.82.

Full text
Abstract:
We present Any-Precision Deep Neural Networks (Any- Precision DNNs), which are trained with a new method that empowers learned DNNs to be flexible in any numerical precision during inference. The same model in runtime can be flexibly and directly set to different bit-width, by trun- cating the least significant bits, to support dynamic speed and accuracy trade-off. When all layers are set to low- bits, we show that the model achieved accuracy compara- ble to dedicated models trained at the same precision. This nice property facilitates flexible deployment of deep learn- ing models in real-world applications, where in practice trade-offs between model accuracy and runtime efficiency are often sought. Previous literature presents solutions to train models at each individual fixed efficiency/accuracy trade-off point. But how to produce a model flexible in runtime precision is largely unexplored. When the demand of efficiency/accuracy trade-off varies from time to time or even dynamically changes in runtime, it is infeasible to re-train models accordingly, and the storage budget may forbid keeping multiple models. Our proposed framework achieves this flexibility without performance degradation. More importantly, we demonstrate that this achievement is agnostic to model architectures. We experimentally validated our method with different deep network backbones (AlexNet-small, Resnet-20, Resnet-50) on different datasets (SVHN, Cifar-10, ImageNet) and observed consistent results.
APA, Harvard, Vancouver, ISO, and other styles
7

Cobb, J. W. Third-order-accurate numerical methods for efficient, large time-step solutions of mixed linear and nonlinear problems. Office of Scientific and Technical Information (OSTI), February 1995. http://dx.doi.org/10.2172/29360.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Anderson, Oscar A. Accurate iterative analytic solution of theKapchinskij-Vladimirskij equations for the case of a matched beam. Office of Scientific and Technical Information (OSTI), August 2006. http://dx.doi.org/10.2172/920259.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Anderson, O. A. Accurate Iterative Analysis Solution of theKapchinskij-Vladimirskij Equations for the Case of a Matched Beam. Office of Scientific and Technical Information (OSTI), January 2007. http://dx.doi.org/10.2172/913160.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Ripoll, Santiago, Jennifer Cole, Olivia Tulloch, Megan Schmidt-Sane, and Tabitha Hrynick. SSHAP: 6 Ways to Incorporate Social Context and Trust in Infodemic Management. Institute of Development Studies (IDS), January 2021. http://dx.doi.org/10.19088/sshap.2021.001.

Full text
Abstract:
Information epidemiology or infodemiology is the study of infodemics - defined by the World Health Organization as an overabundance of information, some accurate and some not, that occurs during a pandemic or other significant event that may impact public health. Infodemic management is the practice of infodemiology and may sit within the risk communication and community engagement (RCCE) pillar of a public health response. However, it is relevant to all aspects of preparedness and response, including the development and evaluation of interventions. Social scientists have much to contribute to infodemic management as, while it must be data and evidence driven, it must also be built on a thorough understanding of affected communities in order to develop participatory approaches, reinforce local capacity and support local solutions.
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Solution's accuracy' for particular source types:
Journal articles Dissertations / Theses Books
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography