Bibliografie tematiche / Set-Based Methods

Letteratura scientifica selezionata sul tema "Set-Based Methods"

Autore: Grafiati

Pubblicato: 1 giugno 2024

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Articoli di riviste sul tema "Set-Based Methods":

Dubois, D., E. Hullermeier e H. Prade. "Fuzzy set-based methods in instance-based reasoning". IEEE Transactions on Fuzzy Systems 10, n. 3 (giugno 2002): 322–32. http://dx.doi.org/10.1109/tfuzz.2002.1006435.

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PAN, Qing, e Guo-Liang XU. "Metamorphosis Based on the Level-Set Methods". Chinese Journal of Computers 32, n. 2 (31 luglio 2009): 213–20. http://dx.doi.org/10.3724/sp.j.1016.2009.00213.

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Wang, Xu. "Methods to Set Threshold Based on MATLAB". Applied Mechanics and Materials 121-126 (ottobre 2011): 954–59. http://dx.doi.org/10.4028/www.scientific.net/amm.121-126.954.

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In setting threshold to determine the arrival time in mechanical vibration signals which are collected by sensors and contain noise, five methods based on MATLAB have been proposed. Direct observation of the figure, powering operation to data, variance theory, reverse search and MATLAB programming has been used. Each method’s merits and demerits will be discussed so that it can be varied according to different situations. Consistent results have been achieved by those methods. MATLAB code has also been presented for better understanding of the algorithm and reproduction. After this analysis, a systematic way of setting threshold (determining the arrival time) has been formed and these methods could actually be used in all similar data separation.

De-jun, Wang, Tang Yun, Yu Hong-chuan e Tang Ze-sheng. "Level set methods based on distance function". Applied Mathematics and Mechanics 24, n. 8 (agosto 2003): 950–60. http://dx.doi.org/10.1007/bf02446501.

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Su, Yu-Chen, William James Gauderman, Kiros Berhane e Juan Pablo Lewinger. "Adaptive Set-Based Methods for Association Testing". Genetic Epidemiology 40, n. 2 (28 dicembre 2015): 113–22. http://dx.doi.org/10.1002/gepi.21950.

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Dullen, Shawn, Dinesh Verma, Mark Blackburn e Cliff Whitcomb. "Survey on set‐based design (SBD) quantitative methods". Systems Engineering 24, n. 5 (20 maggio 2021): 269–92. http://dx.doi.org/10.1002/sys.21580.

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Le Coënt, Adrien, Florian De Vuyst, Christian Rey, Ludovic Chamoin e Laurent Fribourg. "Control of mechanical systems using set based methods". International Journal of Dynamics and Control 5, n. 3 (2 maggio 2016): 496–512. http://dx.doi.org/10.1007/s40435-016-0245-y.

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Liao, Guojun, Feng Liu, Gary C. de la Pena, Danping Peng e Stanley Osher. "Level-Set-Based Deformation Methods for Adaptive Grids". Journal of Computational Physics 159, n. 1 (marzo 2000): 103–22. http://dx.doi.org/10.1006/jcph.2000.6432.

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Hussein, A., H. A. Muttlak e E. Al-Sawi. "Group sequential methods based on ranked set samples". Statistical Papers 54, n. 3 (17 aprile 2012): 547–62. http://dx.doi.org/10.1007/s00362-012-0448-z.

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ZHANG, Zhiqian, e Hirohisa NOGUCHI. "1108 Level set-based topology optimization with material heterogeneity using meshfree methods and dual discretizations". Proceedings of The Computational Mechanics Conference 2007.20 (2007): 687–88. http://dx.doi.org/10.1299/jsmecmd.2007.20.687.

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Tesi sul tema "Set-Based Methods":

Stoican, Florin. "Fault tolerant control based on set-theoretic methods". Phd thesis, Supélec, 2011. http://tel.archives-ouvertes.fr/tel-00633622.

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The scope of the thesis is the analysis and design of fault tolerant control (FTC) schemes through the use of set-theoretic methods. In the framework of multisensor schemes, the faults appearance and the modalities to accurately detect them are investigated as well as the design of control laws which assure the closed-loop stability. By using invariant/contractive sets to describe the residual signals, a fault detection and isolation (FDI) mechanism with reduced computational demands is implemented based on set-separation. A dual mechanism, implemented by a recovery block, which certificates previously fault-affected sensors is also studied. From a broader theoretical perspective, we point to the conditions which allow the inclusion of {FDI} objectives in the control law design. This leads to static feedback gains synthesis by means of numerically attractive optimization problems. Depending on the parameters selected for tuning, is shown that the FTC design can be completed by a reference governor or a predictive control scheme which adapts the state trajectory and the feedback control action in order to assure {FDI}. When necessary, the specific issues originated by the use of set-theoretic methods are detailed and various improvements are proposed towards: invariant set construction, mixed integer programming (MIP), stability for switched systems (dwell-time notions).

Xu, Feng. "Diagnosis and fault-tolerant control using set-based methods". Doctoral thesis, Universitat Politècnica de Catalunya, 2014. http://hdl.handle.net/10803/284831.

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The fault-tolerant capability is an important performance specification for most of technical systems. The examples showing its importance are some catastrophes in civil aviation. According to some official investigations, some air incidents are technically avoidable if the pilots can take right measures. But, relying on the skill and experience of the pilots, it cannot be guaranteed that reliable flight decisions are always made. Instead, if fault-tolerant strategies can be included in the decision-making procedure, it will be very useful for safer flight. Fault-tolerant control is generally classified into passive and active fault-tolerant control. Passive fault-tolerant control relies on robustness of controller, which can only provide limited fault-tolerant ability, while active fault-tolerant control turns to a fault detection and isolation module to obtain fault information and then actively take actions to tolerate the effect of faults. Thus, active fault-tolerant control generally has stronger fault-tolerant ability. In this dissertation, one focuses on active fault-tolerant control, which for this case considers model predictive control and set-based fault detection and isolation. Model predictive control is a successful advanced control strategy in process industry and has been widely used for processes such as chemistry and water treatment, because of its ability to deal with multivariable constrained systems. However, the performance of model redictive control has deep dependence on system-model accuracy. Realistically, it is impossible to avoid the effect of modelling errors, disturbances, noises and faults, which always result in model mismatch. Comparatively, model mismatch induced by faults is possible to be effectively handled by suitable fault-tolerant strategies. The objective of this dissertation is to endow model predictive control with fault-tolerant ability to improve its effectiveness. In order to reach this objective, set-based fault detection and isolation methods are used in the proposed fault-tolerant schemes. The important advantage of set-based fault detection and isolation is that it can make robust fault detection and isolation decisions, which is key for taking right fault-tolerant measures. This dissertation includes four parts. The first part introduces this research, presents the state of the art and gives an introduction of used research tools. The second part proposes set-based fault detection and isolation for actuator or=and sensor faults, which are involved in interval observers, invariant sets and set-membership estimation. First, the relationship between interval observers and invariant sets is investigated. Then, actuator and sensor faults are separately coped with depending on their own features. The third part focuses on actuator or=and sensor fault-tolerant model predictive control, where the control strategy is robust model predictive control (tube-based and min-max approaches). The last part draws some conclusions, summarizes this research and gives clues for the further work.
La capacidad de los sistemas para tolerar fallos es una importante especificación de desempeño para la mayoría de sistemas. Ejemplos que muestran su importancia son algunas catástrofes en aviación civil. De acuerdo a investigaciones oficiales, algunos incidentes aéreos son técnicamente evitables si los pilotos pudiesen tomar las medidas adecuadas. Aun así, basándose en las habilidades y experiencia de los pilotos, no se puede garantizar que decisiones de vuelo confiables serán siempre posible de tomar. En cambio, si estrategias de tolerancia a fallos se pudieran incluir en el proceso de toma de decisión, los vuelos serían mucho más seguros. El control tolerante a fallos es generalmente clasificado en control pasivo y activo. El control pasivo se basa en la robustez del controlador, el cual sólo provee una habilidad limitada de tolerancia a fallos, mientras que el control tolerante a fallos de tipo activo se convierte en un modulo de detección y aislamiento de fallos que permite obtener información de éstos, y luego, activamente, tomar acciones para tolerar el efecto de dichos fallos. Así pues, el control activo generalmente tiene habilidades más fuertes de tolerancia a fallos. Esta tesis se enfoca en control tolerante a fallos activo, para lo cual considera el control predictivo basado en modelos y la detección y aislamiento de fallos basados en conjuntos. El control predictivo basado en modelos es una estrategia de control exitosa en la industria de procesos y ha sido ampliamente utilizada para procesos químicos y tratamiento de aguas, debido a su habilidad de tratar con sistemas multivariables con restricciones. A pesar de esto, el desempeño del control predictivo basado en modelos tiene una profunda dependencia de la precisión del modelo del sistema. Siendo realistas, es imposible evitar el efecto de errores de modelado, perturbaciones, ruidos y fallos, que siempre llevan a diferencias entre el modelo y el sistema real. Comparativamente, el error de modelo inducido por los fallos es posible de ser manejado efectivamente por estrategias adecuadas de control tolerante a fallos. Con el fin de alcanzar este objetivo, métodos de detección y aislamiento de fallos basados en conjuntos son utilizados en los esquemas de tolerancia a fallos propuestos en esta tesis. La ventaja importante de estas técnicas de detección y aislamiento de fallos basadas en conjuntos es que puede tomar decisiones robustas de detección y aislamiento, lo cual es clave para tomar medidas acertadas de tolerancia a fallos. Esta tesis esta dividida en cuatro partes. La primera parte es introductoria, presenta el estado del arte y hace una introducción a las herramientas de investigación utilizadas. La segunda parte expone la detección y aislamiento de fallos en actuadores y/o sensores, basándose en teoría de conjuntos, a partir de observadores de intervalo, y conjuntos invariantes. La tercera parte se enfoca en el control predictivo robusto (con enfoques basados tanto en tubos robustos como en min-max) con tolerancia a fallos en actuadores y/o sensores. La cuarta parte presenta algunas conclusiones, hace un resumen de esta investigación y da algunas ideas para trabajos futuros.

Stankovic, Nikola. "Set-based control methods for systems affected by time-varying delay". Thesis, Supélec, 2013. http://www.theses.fr/2013SUPL0025/document.

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On considère la synthèse de la commande basée sur un asservissement affecté par des retards. L’approche utilisée repose sur des méthodes ensemblistes. Une partie de cette thèse est consacrée à une conception de commande active pour la compensation des retards qui apparaissent dans des canaux de communication entre le capteur et correcteur. Ce problème est considéré dans une perspective générale du cadre de commande tolérante aux défauts où des retards variés sont vus comme un mode particulier de dégradation du capteur. Le cas avec transmission de mesure retardée pour des systèmes avec des capteurs redondants est également examiné. Par conséquent, un cadre unifié est proposé afin de régler le problème de commande basé sur la transmission des mesures avec retard qui peuvent également être fournies par des capteurs qui sont affectés par des défauts soudains.Dans la deuxième partie le concept d’invariance positive pour des systèmes linéaires à retard à temps discret est exposé. En ce qui concerne l’invariance pour cette classe des systèmes dynamiques, il existe deux idées principales. La première approche repose sur la réécriture d’un tel système dans l’espace d’état augmenté et de le considérer comme un système linéaire. D’autre part, la seconde approche considère l’invariance dans l’espace d’état initial. Cependant, la caractérisation d’un tel ensemble invariant est encore une question ouverte, même pour le cas linéaire. Par conséquent, l’objectif de cette thèse est d’introduire une notion générale d’invariance positive pour des systèmes linéaires à retard à temps discret. Également, certains nouveaux éclairages sur l’existence et la construction pour les ensembles invariants positifs robustes sont détaillés. En outre, les nouveaux concepts d’invariance alternatives sont décrits
We considered the process regulation which is based on feedback affected by varying delays. Proposed approach relies on set-based control methods. One part of the thesis examines active control design for compensation of delays in sensor-to controller communication channel. This problem is regarded in a general perspective of the fault tolerant control where delays are considered as a particular degradation mode of the sensor. Obtained results are also adapted to the systems with redundant sensing elements that are prone to abrupt faults. In this sense, an unified framework is proposed in order to address the control design with outdated measurements provided by unreliable sensors.Positive invariance for linear discrete-time systems with delays is outlined in the second part of the thesis. Concerning this class of dynamics, there are two main approaches which define positive invariance. The first one relies on rewriting a delay-difference equation in the augmented state-space and applying standard analysis and control design tools for the linear systems. The second approach considers invariance in the initial state-space. However, the initial state-space characterization is still an open problem even for the linear case and it represents our main subject of interest. As a contribution, we provide new insights on the existence of the positively invariant sets in the initial state-space. Moreover, a construction algorithm for the minimal robust D-invariant set is outlined. Additionally, alternative invariance concepts are discussed

Tariq, Muhammad Farzan. "Set-based design rules and implementation methods in concept development phase". Thesis, Massachusetts Institute of Technology, 2018. http://hdl.handle.net/1721.1/118491.

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Thesis: S.M. in Engineering and Management, Massachusetts Institute of Technology, System Design and Management Program, 2018.
This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (page 52).
There are numerous methodologies that organizations employ during concept development cycles. These range from agile, waterfall, point-based designs etc. One of the emerging such methodologies is called Set-Based Design (SBD). There has been flurry of research conducted into SBD process. Most of the documentations about SBD highlight its general principles and characteristics. In this thesis, I have taken a more focused approach by targeting planning and concept development phases in particular. Rules to select or deselect concepts have been extensively discussed in this research followed by providing an effective structure to implement SBD in concept development process. The form and function distinction during the concept development cycle has been clearly examined and documented. The research has been conducted independent of any organization or product type and therefore is applicable to any product development scenario and can be easily adopted by any organization.
by Muhammad Farzan Tariq.
S.M. in Engineering and Management

Léon, Cantón Plinio de. "Dependable control of uncertain linear systems based on set theoretic methods". Achen Shaker, 2009. http://d-nb.info/995737347/04.

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譚玉貞 e Yuk-ching Tam. "Some practical issues in estimation based on a ranked set sample". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1999. http://hub.hku.hk/bib/B31221683.

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Kern, Benjamin Verfasser], e Rolf [Gutachter] [Findeisen. "Set-based methods for interconnected control systems / Benjamin Kern ; Gutachter: Rolf Findeisen". Magdeburg : Universitätsbibliothek Otto-von-Guericke-Universität, 2019. http://d-nb.info/1220036447/34.

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Ullah, Baseer. "Structural topology optimisation based on the boundary element and level set methods". Thesis, Durham University, 2014. http://etheses.dur.ac.uk/10659/.

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The research work presented in this thesis is related to the development of structural optimisation algorithms based on the boundary element and level set methods for two and three-dimensional linear elastic problems. In the initial implementation, a stress based evolutionary structural optimisation (ESO) approach has been used to add and remove material simultaneously for the solution of two-dimensional optimisation problems. The level set method (LSM) is used to provide an implicit description of the structural geometry, which is also capable of automatically handling topological changes, i.e. holes merging with each other or with the boundary. The classical level set based optimisation methods are dependent on initial designs with pre-existing holes. However, the proposed method automatically introduces internal cavities utilising a stress based hole insertion criteria, and thereby eliminates the use of initial designs with pre-existing holes. A detailed study has also been carried out to investigate the relationship between a stress and topological derivative based hole insertion criteria within a boundary element method (BEM) and LSM framework. The evolving structural geometry (i.e. the zero level set contours) is represented by non-uniform rational b-splines (NURBS), providing a smooth geometry throughout the optimisation process and completely eliminating jagged edges. The BEM and LSM are further combined with a shape sensitivity approach for the solution of minimum compliance problems in two-dimensions. The proposed sensitivity based method is capable of automatically inserting holes during the optimisation process using a topological derivative approach. In order to investigate the associated advantages and disadvantages of the evolutionary and sensitivity based optimisation methods a comparative study has also been carried out. There are two advantages associated with the use of LSM in three-dimensional topology optimisation. Firstly, the LSM may readily be applied to three-dimensional space, and it is shown how this can be linked to a 3D BEM solver. Secondly, the holes appear automatically through the intersection of two surfaces moving towards each other. Therefore, the use of LSM eliminates the need for an additional hole insertion mechanism as both shape and topology optimisation can be performed at the same time. A complete algorithm is proposed and tested for BEM and LSM based topology optimisation in three-dimensions. Optimal geometries compare well against those in the literature for a range of benchmark examples.

Kern, Benjamin [Verfasser], e Rolf [Gutachter] Findeisen. "Set-based methods for interconnected control systems / Benjamin Kern ; Gutachter: Rolf Findeisen". Magdeburg : Universitätsbibliothek Otto-von-Guericke-Universität, 2019. http://d-nb.info/1220036447/34.

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Mulagaleti, Sampath Kumar. "Invariant Set-based Methods for the Computation of Input and Disturbance Sets". Thesis, IMT Alti Studi Lucca, 2023. http://e-theses.imtlucca.it/370/1/Mulagaleti_phdthesis.pdf.

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This dissertation presents new methods to synthesize disturbance sets and input constraints set for constrained linear time-invariant systems. Broadly, we formulate and solve optimization problems that (a) compute disturbance sets such that the reachable set of outputs approximates an assigned set, and (b) compute input constraint sets guaranteeing the stabilizability of a given set of initial conditions. The proposed methods find application in the synthesis and analysis of several control schemes such as decentralized control, reduced-order control, etc., as well as in practical system design problems such as actuator selection, etc. The key tools supporting the develpment of the aforementioned methods are Robust Positive Invariant (RPI) sets. In particular, the problems that we formulate are such that they co-synthesize disturbance/input constraint sets along with the associated RPI sets. This requires embedding existing techniques to compute RPI sets within an optimization problem framework, that we facilitate by developing new results related to properties of RPI sets, polytope representations, inclusion encoding techniques, etc. In order to solve the resulting optimization problems, we develop specialized structure-exploiting solvers that we numerically demonstrate to outperform conventional solution methods. We also demonstrate several applications of the methods we propose for control design. Finally, we extend the methods to tackle data-driven control synthesis problems in an identification-for-control framework.

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Libri sul tema "Set-Based Methods":

Burger, Martin, Andrea C. G. Mennucci, Stanley Osher e Martin Rumpf. Level Set and PDE Based Reconstruction Methods in Imaging. Cham: Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-01712-9.

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Vasil'eva, Natal'ya. Mathematical models in the management of copper production: ideas, methods, examples. ru: INFRA-M Academic Publishing LLC., 2020. http://dx.doi.org/10.12737/1014071.

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Presents the current status in modelling of metallurgical processes considered by the model the mathematical model used in the description of the processes of copper production and their classification. Set out a system of methods and models in the field of mathematical modeling of technological processes, including balance sheet, statistics, optimization models, forecasting models and predictive models. For specific technological processes are developed: the model of the balance of the cycle of pyrometallurgical production of copper, polynomial model for prediction of matte composition on the basis of the passive experiment, predictive model of quantitative estimation of the copper content in the matte based on fuzzy logic. Of interest to students, postgraduates, teachers of technical universities, engineers and research workers who use mathematical methods for processing of data of laboratory and industrial experiments.

Klimenko, Irina, Nikolay Kozlov, Sergey Kostenko, Anastasia Shamustakimova e Yulian Mavlyutov. Identification and certification of forage grasses (meadow clover, alfalfa, sowing and hop) based on DNA markers. ru: Federal Williams Research Center of Forage Production and Agroecology, 2020. http://dx.doi.org/10.33814/978-5-6043194-9-9.

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A technology has been developed for DNA identification and certification of varieties of meadow clover (Trifolium pratense L.), alfalfa (Medicago varia Mart.), Sowing (M. sativa L.) and hop (M. lupuli-na L.) based on molecular analysis with using SSR and SRAP markers. The recommendations contain a description of the sequence of experiments and protocols for DNA typing procedures. The presented methods were developed by the authors on the basis of their own experimental research and using the data available in the literature. A characteristic of informative primers for each marking system is given, a set of DNA identification markers is proposed, and unique molecular genetic formulas of varieties are drawn up as the basis for a reference genetic passport. Methodological recommendations were prepared with the aim of mastering the technology of DNA certification of forage grasses in practice. Designed for managers and specialists of research and control laboratories, can serve as a textbook for students and postgraduates in specialized specialties.

Balas, Andrea Karch. Ready, set, show what you know: Building skills for Ohio proficiency tests. Columbus, Ohio: Englefield & Arnold Pub., 2001.

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Balas, Andrea Karch. Ready, set, show what you know: Building skills for Ohio proficiency tests. Columbus, Ohio: Englefield & Arnold Pub., 2000.

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Balas, Andrea Karch. Ready, set, show what you know: Building skills for Ohio proficiency tests : student workbook. Columbus, Ohio: Englefield & Arnold Pub., 2000.

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Balas, Andrea Karch. Ready, set, show what you know: Building skills for Ohio proficiency tests : student workbook. Columbus, Ohio: Englefield & Arnold Pub., 2001.

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Cvetkov, Viktor. Basics of complexity theory. ru: INFRA-M Academic Publishing LLC., 2024. http://dx.doi.org/10.12737/2110856.

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The monograph reveals the basics of complexity theory and methods for assessing complexity. The concept of complexity consideration is based on the analysis of complexity as a common attribute in processes and systems. The monograph describes the main methods for assessing different types of complexity. The concept of considering complexity in this monograph is also based on the fact that complexity is a comparative characteristic. It is given on a relative scale of difficulty. Therefore, complexity must be defined on a relative scale of “simplicity-complexity.” This concept motivates the consideration and analysis of the concept of “simplicity” as a complement to the concept of “complexity”. These concepts set the scale of complexity. The monograph provides a comparative analysis of the related concepts of simplicity and complexity. Three methods for assessing complexity are described: expert assessment of complexity, assessment of complexity using mathematical metrics, comparative assessment of complexity based on the theory of comparative analysis. The monograph contains a taxonomy of the main types of complexity. The content of the main types of complexity is revealed in detail: descriptive complexity, system complexity, modeling complexity, computational complexity. algorithmic complexity, deterministic complexity. Specific cognitive difficulties are described in detail. For cognitive complexity, special assessment methods are used. An interpretation of the concept of cognitive filter is given. Complexity is associated with the concept of complex systems. In most monographs on complex systems, the complexity aspect has not been considered or is viewed in a simplified manner. This monograph examines complexity as a characteristic of complex systems and the basis for their classification. Emergence is described as a characteristic of the complexity of systems and complex processes. The monograph contains a taxonomy of complex systems with characteristics of the complexity of different systems. Complex data systems have been explored. An analysis of organizational complex systems is given. Various types of complex ergatic systems have been described. An analysis of complex technical systems is given. Self-developing complex systems are described. autopoiesis of a complex organizational and technical system has been studied as a principle of systems development. Cyber-physical systems are described as an example of the development of complex systems. The monograph is intended for specialists in the field of computer science, systems analysis, artificial intelligence and philosophy of information.

Polonina, Elena, Sergey Leonovich, Sergey Fedosov e Valeriy Yaglov. Structural concrete with a complex addition of hydrothermal nanosilicon and carbon nanotubes. ru: INFRA-M Academic Publishing LLC., 2023. http://dx.doi.org/10.12737/1981690.

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The monograph is devoted to improving the methods of directed and controlled regulation of the C — S — H-gel structure by varying the doses, sizes, physical and chemical characteristics of the surface, and the nanoparticles used. The authors have developed an additive that additionally contains a superplasticizer to reduce the water demand of the concrete mixture and stabilize the nanoparticles. The dependences of the strength growth of cement stone and structural heavy concrete on the components of the complex additive are revealed. Experimental confirmation of the mechanism of action of a combined nano—additive with a reduced consumption of nanoparticles on the structure of C — S - H-gel was obtained based on the results of the application of a set of methods. It is revealed that the use of a complex additive contributes to a proportional increase in the reduced modulus of elasticity, hardness, and mechanical characteristics of Portland cement stone and concrete. The study of the additive in the conditions of the construction site showed the prospects of its application for construction, ensuring a reduction in the cost of the technology of nanomodification of concrete relative to the effect of improving performance. For specialists of research, construction and design organizations dealing with the modification of concrete with nanomaterials, as well as for students, undergraduates, postgraduates, teachers who work on the problems of building materials science.

Knoll, Franz, e Thomas Vogel. Design for Robustness. Zurich, Switzerland: International Association for Bridge and Structural Engineering (IABSE), 2009. http://dx.doi.org/10.2749/sed011.

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<p>Robustness is the ability to survive unforeseen circum-stances without undue damage or loss of function. It has become a requirement expressed in modern building codes, mostly without much advice as to how it can be achieved. Engineering has developed some approaches based on tra-ditional practice as well as recent insight. However, know-ledge about robustness remains scattered and ambiguous, making it difficult to apply to many specific cases.<p> The authors' attempt to collect and review elements, methods and strategies toward structural robustness, using a holistic, almost philosophical approach. This leads to a set of consid-erations to guide selection and implementation of measures in specific cases, followed by a collection of applications and examples from the authors practice.<p>The world, engineering and construction are imperfect and not entirely predictable. Robustness provides a measure of structural safety beyond traditional codified design rules.

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Capitoli di libri sul tema "Set-Based Methods":

Mordeson, John N., Mark J. Wierman, Terry D. Clark, Alex Pham e Michael A. Redmond. "Methods Based on Fuzzy Set Theory". In Linear Models in the Mathematics of Uncertainty, 163–75. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-35224-9_10.

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Struth, Georg. "A Calculus for Set-Based Program Development". In Formal Methods and Software Engineering, 541–59. Berlin, Heidelberg: Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-540-39893-6_31.

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Läthén, Gunnar, Thord Andersson, Reiner Lenz e Magnus Borga. "Momentum Based Optimization Methods for Level Set Segmentation". In Lecture Notes in Computer Science, 124–36. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-02256-2_11.

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Nguyen, Hung Son, e Sinh Hoa Nguyen. "Learning Rough Set Based Classifiers Using Boolean Kernels". In Advanced Computational Methods for Knowledge Engineering, 163–73. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-38364-0_15.

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Toivanen, Jukka I. "An Automatic Differentiation Based Approach to the Level Set Method". In Computational Methods in Applied Sciences, 43–57. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-23564-6_4.

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Kobayashi, Takumi. "Generalized Mutual Subspace Based Methods for Image Set Classification". In Computer Vision – ACCV 2012, 578–92. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-37331-2_44.

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Rumpf, Martin. "Variational Methods in Image Matching and Motion Extraction". In Level Set and PDE Based Reconstruction Methods in Imaging, 143–204. Cham: Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-01712-9_3.

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Sawatzky, Alex, Christoph Brune, Thomas Kösters, Frank Wübbeling e Martin Burger. "EM-TV Methods for Inverse Problems with Poisson Noise". In Level Set and PDE Based Reconstruction Methods in Imaging, 71–142. Cham: Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-01712-9_2.

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Xie, Xianghua, Si Yong Yeo, Majid Mirmehdi, Igor Sazonov e Perumal Nithiarasu. "Image Gradient Based Level Set Methods in 2D and 3D". In Deformation Models, 101–20. Dordrecht: Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-94-007-5446-1_4.

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Scheuermann, Björn, e Bodo Rosenhahn. "Analysis of Numerical Methods for Level Set Based Image Segmentation". In Advances in Visual Computing, 196–207. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-10520-3_18.

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Atti di convegni sul tema "Set-Based Methods":

Lin, Juan K. "Approximate Inference based on Convex Set Sampling". In BAYESIAN INFERENCE AND MAXIMUM ENTROPY METHODS IN SCIENCE AND ENGINEERING: 23rd International Workshop on Bayesian Inference and Maximum Entropy Methods in Science and Engineering. AIP, 2004. http://dx.doi.org/10.1063/1.1751360.

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Li, Yanlin, e Lihua Wei. "Rough set methods based on discernibility relationship in IIS". In 2009 IEEE International Conference on Granular Computing (GRC). IEEE, 2009. http://dx.doi.org/10.1109/grc.2009.5255103.

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McGovern, Ryan, e Nikolaos Athanasopoulos. "Kinodynamic planning for robotic manipulators using set-based methods". In 2022 European Control Conference (ECC). IEEE, 2022. http://dx.doi.org/10.23919/ecc55457.2022.9838123.

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Yamaguchi, Osamu, e Kazuhiro Fukui. "Image-set based Classification using Multiple Pseudo-whitened Mutual Subspace Method". In 11th International Conference on Pattern Recognition Applications and Methods. SCITEPRESS - Science and Technology Publications, 2022. http://dx.doi.org/10.5220/0010836500003122.

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"A Fast Computation Method for IQA Metrics Based on their Typical Set". In International Conference on Pattern Recognition Applications and Methods. SCITEPRESS - Science and and Technology Publications, 2014. http://dx.doi.org/10.5220/0004820301990206.

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Paul, S., e P. Maji. "Rough set based gene selection algorithm for microarray sample classification". In 2010 International Conference on Methods and Models in Computer Science (ICM2CS 2010). IEEE, 2010. http://dx.doi.org/10.1109/icm2cs.2010.5706710.

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Hao, Yuejia. "Speech-based Detection Machine Learning Methods on Parkinson Data Set". In 2023 IEEE 3rd International Conference on Electronic Technology, Communication and Information (ICETCI). IEEE, 2023. http://dx.doi.org/10.1109/icetci57876.2023.10176779.

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Mamou, Jonathan, Oren Pereg, Moshe Wasserblat, Alon Eirew, Yael Green, Shira Guskin, Peter Izsak e Daniel Korat. "Term Set Expansion based NLP Architect by Intel AI Lab". In Proceedings of the 2018 Conference on Empirical Methods in Natural Language Processing: System Demonstrations. Stroudsburg, PA, USA: Association for Computational Linguistics, 2018. http://dx.doi.org/10.18653/v1/d18-2004.

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Kołopieńczyk, Małgorzata, Alexander Barkalov e Larysa Titarenko. "Synthesis of EMB - based Moore FSM with splitting set of logical conditions". In INTERNATIONAL CONFERENCE OF COMPUTATIONAL METHODS IN SCIENCES AND ENGINEERING 2015 (ICCMSE 2015). AIP Publishing LLC, 2015. http://dx.doi.org/10.1063/1.4938883.

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Wei-ping Wang, Qi-zong Wu, Da-ju Xu e Xiao-dong Hu. "Improved multi-criteria fuzzy decision-making methods based on vague set". In 2008 7th World Congress on Intelligent Control and Automation. IEEE, 2008. http://dx.doi.org/10.1109/wcica.2008.4594371.

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Rapporti di organizzazioni sul tema "Set-Based Methods":

Vandevort, Daniel, Chandler Engel, Shaun Stanton e Jeffrey Ellis. Application of limited-field-data methods in reservoir volume estimation : a case study. Engineer Research and Development Center (U.S.), marzo 2024. http://dx.doi.org/10.21079/11681/48268.

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The conventional approach to estimating lake or reservoir water volumes hinges on field data collection; however, volume estimation methods are available that use little or no field data. Two such methods—the simplified V-A-h (volume-area-height) and the power function—were applied to a set of six anthropogenic reservoirs on the Fort Jackson, South Carolina, installation and checked against a validation data set. Additionally, seven interpolation methods were compared for differences in total volume estimation based on sonar data collected at each reservoir. The simplified V-A-h method overestimated reservoir volume more than each technique in the power function method, and the categorical technique underestimated the most reservoir volumes of all three techniques. Each method demonstrates high Vₑᵣᵣ variability among reservoirs, and Vₑᵣᵣ for the Power Function techniques applied here is consistent with that found in previous research in that it is near or less than 30%. Compared with Vₑᵣᵣ in other studies evaluating the simplified V-A-h method, Vₑᵣᵣ in this study was found to be 10%–20% higher.

Desjardins e Sahney. PR-351-083602-R01 Field Demonstration of Reliability Based Guidelines for Pipeline Integrity. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), febbraio 2011. http://dx.doi.org/10.55274/r0010786.

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An in-depth review of the reliability framework developed by C-FER for PRCI (PR-244-05302 Guidelines for Reliability Based Pipeline Integrity Methods) was undertaken in Phase I of this project. In Phase II of this project, the guidelines were applied to a second set of inline inspection data � along with more specifically defined input parameters. Specifically, two scenarios were assessed for the corrosion data set: one scenario consisted of corrosion growth rate applied on a defect-specific basis whereas the second scenario consisted for corrosion growth rate applied on a segment-specific basis. The analysis was intended to test the method for repeatability of results as well as the sensitivity to one of the critical assumptions associated with corrosion growth rate. The results are presented in this report.

Mathew, Jijo K., Christopher M. Day, Howell Li e Darcy M. Bullock. Curating Automatic Vehicle Location Data to Compare the Performance of Outlier Filtering Methods. Purdue University, 2021. http://dx.doi.org/10.5703/1288284317435.

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Agencies use a variety of technologies and data providers to obtain travel time information. The best quality data can be obtained from second-by-second tracking of vehicles, but that data presents many challenges in terms of privacy, storage requirements and analysis. More frequently agencies collect or purchase segment travel time based upon some type of matching of vehicles between two spatially distributed points. Typical methods for that data collection involve license plate re-identification, Bluetooth, Wi-Fi, or some type of rolling DSRC identifier. One of the challenges in each of these sampling techniques is to employ filtering techniques to remove outliers associated with trip chaining, but not remove important features in the data associated with incidents or traffic congestion. This paper describes a curated data set that was developed from high-fidelity GPS trajectory data. The curated data contained 31,621 vehicle observations spanning 42 days; 2550 observations had travel times greater than 3 minutes more than normal. From this baseline data set, outliers were determined using GPS waypoints to determine if the vehicle left the route. Two performance measures were identified for evaluating three outlier-filtering algorithms by the proportion of true samples rejected and proportion of outliers correctly identified. The effectiveness of the three methods over 10-minute sampling windows was also evaluated. The curated data set has been archived in a digital repository and is available online for others to test outlier-filtering algorithms.

Ferrell, Christopher E., John M. Eells, David Reinke e Richard Lee. Metropolitan Transportation Commission Discretionary Transit Funding Methods Evaluation. Mineta Transporation Institute, ottobre 2023. http://dx.doi.org/10.31979/mti.2023.2133.

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In 2021, the Santa Clara Valley Transportation Authority (VTA) approached the Mineta Transportation Institute (MTI) with a proposal to have MTI provide an evaluation of the Metropolitan Transportation Commission’s (MTC’s) operational discretionary funding allocation policies and methods for Bay Area transit operators. The research was done in two parts. Part 1 investigated MTC’s past and current allocation methods for discretionary operational transit funding programs; Part 2 involved the evaluation of outcomes if MTC employed alternative allocation methods. After the Part 1 review of MTC’s various transit funding programs, the federal pandemic relief funds and the Transportation Development Act/State Transit Assistance (TDA/STA) funding programs were selected and evaluated in Part 2 using a set of five alternative allocation metrics and compared to actual MTC allocations. Key findings include: (1) the population-based metric produced the largest increase for VTA’s pandemic relief funds, with VTA receiving 221 percent more than MTC actually allocated in 2020 and 2021, but the San Francisco Municipal Transportation Agency (SFMTA) receiving 64 percent less; (2) the ridership-based metric yielded the smallest amount of VTA pandemic funding, but high ridership operators such as SFMTA would have a 41 percent increase; (3) the population-based metric produced the largest increase in STA funding to VTA but would come at the expense of other transit operators, with Sonoma County receiving 51 percent less; and (4) the ridership-based metric yielded the smallest amount of STA funds for VTA, with 50 percent less funding than actual, while high ridership operators such as SFMTA, would see a roughly 400 percent increase. Thoroughly investigating current and alternative funding allocation methods and policies is critical to understanding their effects on transit agencies and the communities they serve.

Schneider, Carsten. Advanced Applications of QCA (Qualitative Comparative Analysis) in R. Instats Inc., 2023. http://dx.doi.org/10.61700/4fghv0ob2x5de469.

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This seminar on advanced set-theoretic methods for the social sciences focuses on applied Qualitative Comparative Analysis (QCA). This method is used in fields as diverse as political science, public policy, international relations, sociology, business and management, organizational studies, and even musicology. This seminar will enable participants to produce cutting edge QCA-based research through hands-on coverage of the most recent advances in QCA. All applied components of the seminar are performed in the R software environment, using RStudio and R packages QCA and SetMethods. An official Instats certificate of completion is provided at the conclusion of the seminar, along with 2 ECTS Equivalent points.

Schneider, Carsten. Advanced Applications of QCA (Qualitative Comparative Analysis) in R. Instats Inc., 2022. http://dx.doi.org/10.61700/qdu1nxlyz9e6c469.

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This seminar on advanced set-theoretic methods for the social sciences focuses on applied Qualitative Comparative Analysis (QCA). This method is used in fields as diverse as political science, public policy, international relations, sociology, business and management, organizational studies, and even musicology. This seminar will enable participants to produce cutting edge QCA-based research through hands-on coverage of the most recent advances in QCA. All applied components of the seminar are performed in the R software environment, using RStudio (Cloud) and R packages QCA and SetMethods. An official Instats certificate of completion is provided at the conclusion of the seminar. For European PhD students, the seminar offers 2 ECTS Equivalent points.

Popel, Maiia V., e Mariya P. Shyshkina. The areas of educational studies of the cloud-based learning systems. [б. в.], settembre 2019. http://dx.doi.org/10.31812/123456789/3245.

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The article analyzes the current stage of educational studies of the cloud-based learning systems. The relationship between the notions of the cloud-based learning system and the cloud-based learning environment are investigated. It was found that the researchers paid most attention to the design of a cloud-based learning environment. However, in the process of a cloud-based environment design, the researchers consider a cloud-based system as a component within the cloud-based learning environment of as a stage in the process of design. It is shown that in the research literature there is no single interpretation of the concept of a cloud-based system for educational purposes. Still the number of basic approaches to the interpretation of the concept under investigation are revealed. The first approach is based on the understanding of the system, as a set of cloud services or cloud-based technologies. The second approach is to consider a separate cloud service as a cloud-based learning system. In this case, the cloud service tools should include such components that cover the content, the tools, the forms and the methods of learning. The structure of the cloud-based learning system within the interpretation of the latest works of Ukrainian researchers is considered.

Worthingham, Robert. PR-579-153603-R01 Field Techniques for Determining Corrosion Status. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), settembre 2017. http://dx.doi.org/10.55274/r0011420.

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Pipeline personnel are routinely asked to evaluate whether excavated corrosion features are active or inactive. To date, no industry guidance has been developed that can be referenced by field personnel when making this assessment. It is recognized that many factors can influence a corrosion status evaluation and that no method, procedure, or process will provide 100% accuracy. The objective of the project was to build a technically defensible set of methods and procedures to classify corrosion features by anomaly type and status as active, inactive or cannot be determined, based on visual inspection and relatively simple field tools and equipment. Such procedures will bring consistency to the industry and will greatly benefit efforts to establish re-assessment intervals and improve preventive and mitigative measures based on technical procedures. A field manual that will help field personnel identify different types of corrosion scenarios has been developed.

Burns, Malcom, e Gavin Nixon. Literature review on analytical methods for the detection of precision bred products. Food Standards Agency, settembre 2023. http://dx.doi.org/10.46756/sci.fsa.ney927.

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The Genetic Technology (Precision Breeding) Act (England) aims to develop a science-based process for the regulation and authorisation of precision bred organisms (PBOs). PBOs are created by genetic technologies but exhibit changes which could have occurred through traditional processes. This current review, commissioned by the Food Standards Agency (FSA), aims to clarify existing terminologies, explore viable methods for the detection, identification, and quantification of products of precision breeding techniques, address and identify potential solutions to the analytical challenges presented, and provide recommendations for working towards an infrastructure to support detection of precision bred products in the future. The review includes a summary of the terminology in relation to analytical approaches for detection of precision bred products. A harmonised set of terminology contributes towards promoting further understanding of the common terms used in genome editing. A review of the current state of the art of potential methods for the detection, identification and quantification of precision bred products in the UK, has been provided. Parallels are drawn with the evolution of synergistic analytical approaches for the detection of Genetically Modified Organisms (GMOs), where molecular biology techniques are used to detect DNA sequence changes in an organism’s genome. The scope and limitations of targeted and untargeted methods are summarised. Current scientific opinion supports that modern molecular biology techniques (i.e., quantitative real-time Polymerase Chain Reaction (qPCR), digital PCR (dPCR) and Next Generation Sequencing (NGS)) have the technical capability to detect small alterations in an organism’s genome, given specific prerequisites of a priori information on the DNA sequence of interest and of the associated flanking regions. These techniques also provide the best infra-structure for developing potential approaches for detection of PBOs. Should sufficient information be known regarding a sequence alteration and confidence can be attributed to this being specific to a PBO line, then detection, identification and quantification can potentially be achieved. Genome editing and new mutagenesis techniques are umbrella terms, incorporating a plethora of approaches with diverse modes of action and resultant mutational changes. Generalisations regarding techniques and methods for detection for all PBO products are not appropriate, and each genome edited product may have to be assessed on a case-by-case basis. The application of modern molecular biology techniques, in isolation and by targeting just a single alteration, are unlikely to provide unequivocal evidence to the source of that variation, be that as a result of precision breeding or as a result of traditional processes. In specific instances, detection and identification may be technically possible, if enough additional information is available in order to prove that a DNA sequence or sequences are unique to a specific genome edited line (e.g., following certain types of Site-Directed Nucelase-3 (SDN-3) based approaches). The scope, gaps, and limitations associated with traceability of PBO products were examined, to identify current and future challenges. Alongside these, recommendations were made to provide the infrastructure for working towards a toolkit for the design, development and implementation of analytical methods for detection of PBO products. Recognition is given that fully effective methods for PBO detection have yet to be realised, so these recommendations have been made as a tool for progressing the current state-of-the-art for research into such methods. Recommendations for the following five main challenges were identified. Firstly, PBOs submitted for authorisation should be assessed on a case-by-case basis in terms of the extent, type and number of genetic changes, to make an informed decision on the likelihood of a molecular biology method being developed for unequivocal identification of that specific PBO. The second recommendation is that a specialist review be conducted, potentially informed by UK and EU governmental departments, to monitor those PBOs destined for the authorisation process, and actively assess the extent of the genetic variability and mutations, to make an informed decision on the type and complexity of detection methods that need to be developed. This could be further informed as part of the authorisation process and augmented via a publicly available register or database. Thirdly, further specialist research and development, allied with laboratory-based evidence, is required to evaluate the potential of using a weight of evidence approach for the design and development of detection methods for PBOs. This concept centres on using other indicators, aside from the single mutation of interest, to increase the likelihood of providing a unique signature or footprint. This includes consideration of the genetic background, flanking regions, off-target mutations, potential CRISPR/Cas activity, feasibility of heritable epigenetic and epitranscriptomic changes, as well as supplementary material from supplier, origin, pedigree and other documentation. Fourthly, additional work is recommended, evaluating the extent/type/nature of the genetic changes, and assessing the feasibility of applying threshold limits associated with these genetic changes to make any distinction on how they may have occurred. Such a probabilistic approach, supported with bioinformatics, to determine the likelihood of particular changes occurring through genome editing or traditional processes, could facilitate rapid classification and pragmatic labelling of products and organisms containing specific mutations more readily. Finally, several scientific publications on detection of genome edited products have been based on theoretical principles. It is recommended to further qualify these using evidenced based practical experimental work in the laboratory environment. Additional challenges and recommendations regarding the design, development and implementation of potential detection methods were also identified. Modern molecular biology-based techniques, inclusive of qPCR, dPCR, and NGS, in combination with appropriate bioinformatics pipelines, continue to offer the best analytical potential for developing methods for detecting PBOs. dPCR and NGS may offer the best technical potential, but qPCR remains the most practicable option as it is embedded in most analytical laboratories. Traditional screening approaches, similar to those for conventional transgenic GMOs, cannot easily be used for PBOs due to the deficit in common control elements incorporated into the host genome. However, some limited screening may be appropriate for PBOs as part of a triage system, should a priori information be known regarding the sequences of interest. The current deficit of suitable methods to detect and identify PBOs precludes accurate PBO quantification. Development of suitable reference materials to aid in the traceability of PBOs remains an issue, particularly for those PBOs which house on- and off-target mutations which can segregate. Off-target mutations may provide an additional tool to augment methods for detection, but unless these exhibit complete genetic linkage to the sequence of interest, these can also segregate out in resulting generations. Further research should be conducted regarding the likelihood of multiple mutations segregating out in a PBO, to help inform the development of appropriate PBO reference materials, as well as the potential of using off-target mutations as an additional tool for PBO traceability. Whilst recognising the technical challenges of developing and maintaining pan-genomic databases, this report recommends that the UK continues to consider development of such a resource, either as a UK centric version, or ideally through engagement in parallel EU and international activities to better achieve harmonisation and shared responsibilities. Such databases would be an invaluable resource in the design of reliable detection methods, as well as for confirming that a mutation is as a result of genome editing. PBOs and their products show great potential within the agri-food sector, necessitating a science-based analytical framework to support UK legislation, business and consumers. Differentiating between PBOs generated through genome editing compared to organisms which exhibit the same mutational change through traditional processes remains analytically challenging, but a broad set of diagnostic technologies (e.g., qPCR, NGS, dPCR) coupled with pan-genomic databases and bioinformatics approaches may help contribute to filling this analytical gap, and support the safety, transparency, proportionality, traceability and consumer confidence associated with the UK food chain.

Gehlhar, Mark. Reconciling Bilateral Trade Data for Use in GTAP. GTAP Technical Paper, settembre 2000. http://dx.doi.org/10.21642/gtap.tp10.

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Bilateral trade flows are reported by both importers and exporters. Large discrepancies in reported import/export trade flows can be found when these two reports are compared. The GTAP database requires consistency between the export flow and its corresponding import flow for all partner pairs. Therefore, bilateral trade data in its reported form cannot be directly used for GTAP. Various methods can be used to produce a consistent set of bilateral trade flows. However, achieving consistency alone does not necessarily provide credible trade flows. Matrix balancing using trade totals published by international agencies is not appropriate since these totals are not reconciled but are simply totals from country-reported flows. A method is developed with the aim of extracting the most reliable reported trade flows from reported import and export flows. Specific examples are used to illustrate how discrepancies can result from reporting errors and transport margins. Evidence is shown indicating that discrepancies often arise from erroneous reporting by one of the partners. Systematic reporting errors associated with a reporter can be measured by the share of consistent transactions with partners. The most reliable reported flows are selected based on credibility of reporters. The source of international bilateral trade for GTAP is United Nations COMTRADE database. It contains the complete set of countries in the world and the set of commodities covering total merchandise trade. Since errors in reporting are country-commodity specific, data is processed at the individual country and SITC 4-digit level before aggregating to the 30-region 31- merchandise trade commodity database in version 3 of the GTAP data base.