Littérature scientifique sur le sujet « Single-assumption »

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Articles de revues sur le sujet "Single-assumption"

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Blankenberger, Sven, et Dirk Vorberg. « The single-format assumption in arithmetic fact retrieval. » Journal of Experimental Psychology : Learning, Memory, and Cognition 23, no 3 (1997) : 721–38. http://dx.doi.org/10.1037/0278-7393.23.3.721.

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Akopyan, Arseniy, et Alexander Plakhov. « Minimal Resistance of Curves under the Single Impact Assumption ». SIAM Journal on Mathematical Analysis 47, no 4 (janvier 2015) : 2754–69. http://dx.doi.org/10.1137/140993843.

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Worch, Thierry, et John M. Ennis. « Investigating the single ideal assumption using Ideal Profile Method ». Food Quality and Preference 29, no 1 (juillet 2013) : 40–47. http://dx.doi.org/10.1016/j.foodqual.2013.01.005.

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Plakhov, Alexander. « Newton’s problem of minimal resistance under the single-impact assumption ». Nonlinearity 29, no 2 (25 janvier 2016) : 465–88. http://dx.doi.org/10.1088/0951-7715/29/2/465.

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Vanhecke, Dimitri, Laura Rodríguez-Lorenzo, Calum Kinnear, Estelle Durantie, Barbara Rothen-Rutishauser et Alke Petri-Fink. « Assumption-free morphological quantification of single anisotropic nanoparticles and aggregates ». Nanoscale 9, no 15 (2017) : 4918–27. http://dx.doi.org/10.1039/c6nr07884b.

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Harn, L., W. J. Hsin et M. Mehta. « Authenticated Diffie–Hellman key agreement protocol using a single cryptographic assumption ». IEE Proceedings - Communications 152, no 4 (2005) : 404. http://dx.doi.org/10.1049/ip-com:20041041.

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Comte, M., et T. Lachand-Robert. « Functions and Domains Having Minimal Resistance Under a Single-Impact Assumption ». SIAM Journal on Mathematical Analysis 34, no 1 (janvier 2002) : 101–20. http://dx.doi.org/10.1137/s0036141001388841.

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Lu, Weijun, Guanyi Ma, Xiaolan Wang, Qingtao Wan et Jinghua Li. « Evaluation of ionospheric height assumption for single station GPS-TEC derivation ». Advances in Space Research 60, no 2 (juillet 2017) : 286–94. http://dx.doi.org/10.1016/j.asr.2017.01.019.

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Lambropoulos, John C. « The isotropic assumption during the Czochralski growth of single semiconductors crystals ». Journal of Crystal Growth 84, no 3 (septembre 1987) : 349–58. http://dx.doi.org/10.1016/0022-0248(87)90262-4.

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Wallace, Chris. « Eliciting priors and relaxing the single causal variant assumption in colocalisation analyses ». PLOS Genetics 16, no 4 (20 avril 2020) : e1008720. http://dx.doi.org/10.1371/journal.pgen.1008720.

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Thèses sur le sujet "Single-assumption"

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Francén, Ragnar. « Metaethical relativism : against the single analysis assumption / ». Göteborg : Department of Philosophy, Göteborg University, 2007. http://hdl.handle.net/2077/8505.

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Ceragioli, Leonardo. « Pluralism in Proof-Theoretic Semantics ». Doctoral thesis, 2020. http://hdl.handle.net/2158/1196477.

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Proof-theoretic semantics is a well-established inferentialist theory of meaning that develops ideas proposed by Prawitz and Dummett. The main aim of this theory is to find a foundation of logic based on some aspects of the linguistic use of the logical terms, as opposed to the regular foundation offered by a model-theoretic approach à la Tarski, in which the denotation of non-linguistic entities is central. Traditionally, intuitionistic logic is considered justified in proof-theoretic semantics (although some doubts are sometimes raised regarding ex falso quodlibet). Even though this approach to semantics has greatly progressed in the last decades, it remains nonetheless controversial the existence of a justification of classical logic that suits its restraints. In this thesis I examine various proposals that try to give such a justification and propose a new one greatly inspired by one of Peter Milne’s papers. The conclusion is, to some extent, open since a reformulation of some notions of proof-theoretic semantics is needed in order to justify classical logic. I conclude the thesis with a general defence of logical pluralism and a description of the kind of pluralism that can be applied to our reformulation of proof-theoretic semantics.
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Huang, Yuh-Ming, et 黃昱銘. « A consensus algorithm tolerating single mobile failure with bounded lost assumption in synchronous complete networks ». Thesis, 2003. http://ndltd.ncl.edu.tw/handle/47851530815800604847.

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碩士
國立交通大學
資訊工程系
91
Consensus problem is one of the most fundamental problems in distributed computing. Most of the papers about this problem focus on static failures, but few focus on dynamic failures. The feature of static failures is that if a process is faulty, then it will remain faulty and cannot cause other process faulty; The feature of dynamic failures is that from time to time, the faulty processes may not be the same group. The reason why we consider dynamic failures is that in some cases, using dynamic failures for capturing system behavior is more suitable than using static failures. For example, process will malfunction due to computer viruses, and function correctly after computer viruses were be healed by anti-virus software. Thus, in this thesis, we only consider the dynamic failures. For simplicity, we focus on a special case of the dynamic failures, called the single mobile failure. Santoro and Widmayer showed that the consensus problem is unsolvable if the single mobile failure may occur. Therefore, in order to cause the consensus problem solvable, we make a very strong assumption, called the bounded lost assumption. This assumption says that there exists an integer $r_{\min}$ such that for all process $i$, there exists some process $j \neq i$ that can receive a message sent from $i$ in round $r \leq r_{\min}$. Then, we present an algorithm \textbf{FloodCons} that requires $r_{\min} + 1$ rounds to solve the consensus problem in this setting.
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Lee, Yum-Min, et 李允民. « Parallel Solver for Three-dimensional Cartesian-grid Based Time-Dependent Schrödinger Equation and Its Applications in Laser-Molecule Interaction Study with Single-Action-electron Assumption ». Thesis, 2009. http://ndltd.ncl.edu.tw/handle/04845407827280731085.

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博士
國立交通大學
機械工程系所
97
A parallelized three-dimensional Cartesian-grid based time-dependent Schrödinger equation (TDSE) solver for molecules with single active electron assumption, assuming freezing the motion of nucleus is presented in this thesis. An explicit stagger-time algorithm is employed for time integration of the TDSE, in which the real and imaginary parts of the wave function are defined at alternative times, while a cell-centered finite-volume method is utilized for spatial discretization of the TDSE on Cartesian grids. The TDSE solver is then parallelized using domain decomposition method on distributed memory machines by applying a multi-level graph-partitioning technique. The solver is validated, using a H2+ molecule system, both by observing total electron probability and total energy conservation without laser interaction, and by comparing the ionization rates with previous 2D-axisymmetric simulation results with an aligned incident laser pulse. Parallel efficiency of this TDSE solver is presented and discussed, in which the parallel efficiency can be as high as 75% using 128 processors. Finally, examples of temporal evolution of probability distribution of laser incidence onto a H2+ molecule at inter-nuclei distance of 9 a.u. (��= 0�a and 90�a) and spectral intensities of harmonic generation at inter-nuclei distance of 2 a.u. (��= 0�a, 30�a, 60�a and 90�a) and the angle effect of laser incidence on ionization rate of N2, O2 and CO2 molecules are presented to demonstrate the capability of the current TDSE solver.
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Livres sur le sujet "Single-assumption"

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Metaethical relativism : Against the single analysis assumption. Göteborg : Göteborg University, 2007.

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Peschanskiy, Aleksey. Semi-Markov models of prevention of unreliable single-channel service system with losses. ru : INFRA-M Academic Publishing LLC., 2022. http://dx.doi.org/10.12737/1870597.

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The monograph examines various maintenance strategies of a single-channel system with losses and unreliable recoverable service device under the assumption of a general type of random variables describing random processes occurring in the system. The apparatus for constructing models of the functioning of the system are semi-Markov processes with a measurable phase space of states and phase enlargement algorithms. Stationary probabilistic and economic indicators of the system are explicitly determined and the tasks of optimal frequency of maintenance of the device are solved. For researchers, engineers and specialists in the field of metamathematic theory of reliability, system analysis. It can be useful for graduate students and students of relevant specialties of technical universities and universities.
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Braidotti, Rosi. Posthuman Feminist Theory. Sous la direction de Lisa Disch et Mary Hawkesworth. Oxford University Press, 2015. http://dx.doi.org/10.1093/oxfordhb/9780199328581.013.35.

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This chapter maps the emergence of a posthuman turn in feminist theory, based on the convergence of posthumanism with postanthropocentrism. The former critiques the universalist posture of the idea of “Man” as the alleged “measure of all things.” The latter criticizes species hierarchy and the assumption of human exceptionalism. Although feminist posthuman theory benefits from multiple genealogical sources and cannot be reduced to a single or linear event, it can be analyzed in terms of its conceptual premises, the methodology and its implications for feminist political subjectivity and for sexual politics, notably in relation to nonhuman agents.
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Boyle, Katherine. The zooarchaeology of complexity and specialization during the Upper Palaeolithic in Western Europe. Sous la direction de Umberto Albarella, Mauro Rizzetto, Hannah Russ, Kim Vickers et Sarah Viner-Daniels. Oxford University Press, 2017. http://dx.doi.org/10.1093/oxfordhb/9780199686476.013.2.

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Over the last twenty years attempts have been made to determine the nature of Upper Palaeolithic hunting specialization. This chapter traces assemblage structural ‘specialization’, where faunal assemblages are dominated by a single species, vs ‘diversity’, in which all recorded species are well represented, between 45,000 and 10,000 bp (Châtelperronian to Azilian), and demonstrates regularity in the archaeozoological record. It moves away from the assumption that assemblages with at least 90% of bones attributable to a single species result from specialized hunting strategies, and seeks explanations for patterns of diversification. The study also deals with the Late Glacial Maximum with its narrowing resource base and the Magdalenian of southwest France, when specialized reindeer hunting is traditionally considered of paramount importance. The chapter uses measures of diversity and evenness to quantify variation observed through time, highlighting a peak in single-species exploitation during the Middle Upper Palaeolithic. Finally, interpretations are offered for future consideration.
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Ford, Matthew. Technology and Culture. Oxford University Press, 2017. http://dx.doi.org/10.1093/acprof:oso/9780190623869.003.0002.

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The prevailing assumption for many writers working on technology and change is that victory in war belongs to the masters of military innovation. If armed forces fail to act on this single insight then defeat in battle is all but certain. This chapter will discuss the various frameworks for helping to explain military innovation and conclude that existing top-down and bottom-up models of socio-technical change are insufficient. In its place this chapter outlines a mode of thinking about military innovation that draws on Science and Technology Studies. This in turn creates an opportunity for thinking about how power across the military-industrial complex is distributed.
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Boland, Lawrence A. Prologue. Oxford University Press, 2017. http://dx.doi.org/10.1093/acprof:oso/9780190274320.003.0001.

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This chapter briefly discusses three key articles about equilibrium attainment that were all published in 1959. These three articles are Kenneth Arrow’s ‘Towards a theory of price adjustment’, Robert Clower’s ‘Ignorant monopolist’, and George Richardson’s ‘Equilibrium, expectations and information’. These articles and their three different perspectives on equilibrium models will often be referred to throughout this book. The chapter then discusses three aspects of general equilibrium theories: the idea that a general equilibrium produces a maximal social good; the single behavioural assumption of neoclassical explanations (essentially the idea that every market participant tries to maximize); and the recent development of Dynamic Stochastic General Equilibrium models.
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Meder, Björn, et Ralf Mayrhofer. Diagnostic Reasoning. Sous la direction de Michael R. Waldmann. Oxford University Press, 2017. http://dx.doi.org/10.1093/oxfordhb/9780199399550.013.23.

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This chapter discusses diagnostic reasoning from the perspective of causal inference. The computational framework that provides the foundation for the analyses—probabilistic inference over graphical causal structures—can be used to implement different models that share the assumption that diagnostic inferences are guided and constrained by causal considerations. This approach has provided many critical insights, with respect to both normative and empirical issues. For instance, taking into account uncertainty about causal structures can entail diagnostic judgments that do not reflect the empirical conditional probability of cause given effect in the data, the classic, purely statistical norm. The chapter first discusses elemental diagnostic inference from a single effect to a single cause, then examines more complex diagnostic inferences involving multiple causes and effects, and concludes with information acquisition in diagnostic reasoning, discussing different ways of quantifying the diagnostic value of information and how people decide which information is diagnostically relevant.
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Stearns, Peter N. Introduction. University of Illinois Press, 2017. http://dx.doi.org/10.5406/illinois/9780252037894.003.0001.

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This introductory chapter discusses societies that have deliberately undertaken a program of demilitarization, with deep consequences in public and political culture as well as statecraft. The developments have occurred in decades dominated by the arms races of the Cold War and the assumption of most governments that the logics of success and security called for more weapons. Exploring the history of explicit demilitarization raises two related issues, both of which provide context for future studies. First, demilitarization as a term can be validly applied to a number of patterns of change—there is no heroic single definition. Second, while contemporary demilitarization has some distinctive features, it links with and builds on earlier historical precedents of several types.
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Eisenberg, Melvin A. The Elements of a Contract. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780199731404.003.0027.

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Chapter 27 concerns the elements of a contract. Contracts consist in large part of expressions, that is, manifestations consisting of words, acts, or both, which are either communicated by an addressor to an addressee or jointly produced by two (or occasionally more) contracting parties. It is sometimes assumed that where contractual expressions are embodied in a single writing the writing is the contract. That assumption is incorrect because contracts almost invariably include a number of additional elements—in particular, the implications of the parties’ expressions and any relevant usage, course of dealing, and course of performance. The context and purpose of a contract are not, strictly speaking, elements of a contract, but bear on its interpretation.
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Sangiovanni, Andrea. Beyond the Political–Orthodox Divide. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198713258.003.0011.

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This chapter urges us to abandon the belief that there is a single human rights practice. Belief in what is called the Single Practice Assumption gives rise to the misguided idea—common to both Orthodox and Political views of human rights—that a philosophical theory should aim to reconstruct the moral core to this practice, derive a ‘master list’ of human rights from that core, and then use that list as a critical standard to reform and improve the practice. It is argued instead that we need a concept of human rights broad enough to capture the diversity of ways in which the term ‘human rights’ is used across the world today. The chapter defends what it calls the Broad View—which subsumes Political and Orthodox views as special cases, deployed for different ends in different contexts—and ends by delineating a systematic methodology for deriving particular conceptions of human rights for the very different contexts in which human rights are invoked.
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Chapitres de livres sur le sujet "Single-assumption"

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Simmonds, J. G. « A Classical, Nonlinear Thermodynamic Theory of Elastic Shells Based on a Single Constitutive Assumption ». Dans Methods and Tastes in Modern Continuum Mechanics, 725–32. Dordrecht : Springer Netherlands, 2010. http://dx.doi.org/10.1007/978-94-007-1884-5_41.

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Pintore, Giovanni, Marco Agus et Enrico Gobbetti. « AtlantaNet : Inferring the 3D Indoor Layout from a Single $$360^\circ $$ Image Beyond the Manhattan World Assumption ». Dans Computer Vision – ECCV 2020, 432–48. Cham : Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-58598-3_26.

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Real, Marion, et Felicitas Schmittinger. « A Framework for Experimenting Co-creation in Real-Life Contexts ». Dans Springer Series in Design and Innovation, 11–24. Cham : Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-78733-2_2.

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AbstractThe chapter describes the methodology applied throughout the experimentation, the application of co-design, the tools used and their role briefly illustrating the single cases. The underlying assumption is that design methodologies and tools are more suitable to support co-creation for the inclusion of society in science and innovation since their aim is to implement co-creation processes from the ideation of new products, services and processes to their real implementation. What differentiates design from other co-creation methodologies is the role of prototypes and their experimentation in real contexts.
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Frisk Kockum, Anton. « Quantum Optics with Giant Atoms—the First Five Years ». Dans International Symposium on Mathematics, Quantum Theory, and Cryptography, 125–46. Singapore : Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-5191-8_12.

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Abstract In quantum optics, it is common to assume that atoms can be approximated as point-like compared to the wavelength of the light they interact with. However, recent advances in experiments with artificial atoms built from superconducting circuits have shown that this assumption can be violated. Instead, these artificial atoms can couple to an electromagnetic field at multiple points, which are spaced wavelength distances apart. In this chapter, we present a survey of such systems, which we call giant atoms. The main novelty of giant atoms is that the multiple coupling points give rise to interference effects that are not present in quantum optics with ordinary, small atoms. We discuss both theoretical and experimental results for single and multiple giant atoms, and show how the interference effects can be used for interesting applications. We also give an outlook for this emerging field of quantum optics.
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Martin, Ciaran. « Geopolitics and Digital Sovereignty ». Dans Perspectives on Digital Humanism, 227–31. Cham : Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-86144-5_30.

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AbstractThe geopolitical dialogue about technology has, for a quarter of a century, essentially revolved around a single technological ecosystem built by the American private sector. An assumption took hold that, over time, clearer “rules of the road” for this digital domain would take hold. But progress toward this has been surprisingly slow; we sometimes refer to “grey zone” activity, because the rules, insofar as they exist, are fuzzy.In the meantime, the digital climate is changing. China’s technological ambitions are not to compete on the American-built, free, open Internet, but to design and build a completely new, more authoritarian system to supplant it. This is forcing a bifurcation of the Internet, and organizations like the European Union and countries across the world have to rethink whether the regulation of American technology is really where the focus should be, rather than working with the USA to contest China’s ambitions.
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Munksgaard, Philip, Svend Lund Breddam, Troels Henriksen, Fabian Cristian Gieseke et Cosmin Oancea. « Dataset Sensitive Autotuning of Multi-versioned Code Based on Monotonic Properties ». Dans Lecture Notes in Computer Science, 3–23. Cham : Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-83978-9_1.

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AbstractFunctional languages allow rewrite-rule systems that aggressively generate a multitude of semantically-equivalent but differently-optimized code versions. In the context of GPGPU execution, this paper addresses the important question of how to compose these code versions into a single program that (near-)optimally discriminates them across different datasets. Rather than aiming at a general autotuning framework reliant on stochastic search, we argue that in some cases, a more effective solution can be obtained by customizing the tuning strategy for the compiler transformation producing the code versions.We present a simple and highly-composable strategy which requires that the (dynamic) program property used to discriminate between code versions conforms with a certain monotonicity assumption. Assuming the monotonicity assumption holds, our strategy guarantees that if an optimal solution exists it will be found. If an optimal solution doesn’t exist, our strategy produces human tractable and deterministic results that provide insights into what went wrong and how it can be fixed.We apply our tuning strategy to the incremental-flattening transformation supported by the publicly-available Futhark compiler and compare with a previous black-box tuning solution that uses the popular OpenTuner library. We demonstrate the feasibility of our solution on a set of standard datasets of real-world applications and public benchmark suites, such as Rodinia and FinPar. We show that our approach shortens the tuning time by a factor of $$6\times $$ 6 × on average, and more importantly, in five out of eleven cases, it produces programs that are (as high as $$10\times $$ 10 × ) faster than the ones produced by the OpenTuner-based technique.
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Yolcu, Cem, Magnus Herberthson, Carl-Fredrik Westin et Evren Özarslan. « Magnetic Resonance Assessment of Effective Confinement Anisotropy with Orientationally-Averaged Single and Double Diffusion Encoding ». Dans Mathematics and Visualization, 203–23. Cham : Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-56215-1_10.

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AbstractPorous or biological materials comprise a multitude of micro-domains containing water. Diffusion-weighted magnetic resonance measurements are sensitive to the anisotropy of the thermal motion of such water. This anisotropy can be due to the domain shape, as well as the (lack of) dispersion in their orientations. Averaging over measurements that span all orientations is a trick to suppress the latter, thereby untangling it from the influence of the domains’ anisotropy on the signal. Here, we consider domains whose anisotropy is modeled as being the result of a Hookean (spring) force, which has the advantage of having a Gaussian diffusion propagator while still confining the spatial range for the diffusing particles. In fact, this confinement model is the effective model of restricted diffusion when diffusion is encoded via gradients of long durations, making the model relevant to a broad range of studies aiming to characterize porous media with microscopic subdomains. In this study, analytical expressions for the powder-averaged signal under this assumption are given for so-called single and double diffusion encoding schemes, which sensitize the MR signal to the diffusive displacement of particles in, respectively, one or two consecutive time intervals. The signal for one-dimensional diffusion is shown to exhibit power-law dependence on the gradient strength while its coefficient bears signatures of restricted diffusion.
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Siri, Michele, et Arthur Van den Hurk. « Recovery and Resolution of Insurance Companies and Director’s Duties ». Dans AIDA Europe Research Series on Insurance Law and Regulation, 141–70. Cham : Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-85817-9_7.

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AbstractIn this chapter, largely finalised before the presentation of a legislative proposal for a European Insurance Recovery and Resolution Directive, on September 2021, recovery and resolution frameworks of insurance companies and insurance groups are discussed. Currently, the insurance regulatory framework at the European level (Solvency II) does not contain a fully developed framework with respect to recovery and (orderly) resolution such as the Bank Recovery & Resolution Directive and the Single Resolution Mechanism. Recent developments at the international level on the initiative of the Financial Stability Board and International Association of Insurance Supervisors are discussed. It is the expectation that the Solvency II 2020 review will introduce minimum harmonising regulatory standards at the European level with respect to the recovery and resolution of insurers. In this chapter, the assumption is made that the legislative proposal of the European Commission will be based on the technical advice, provided by EIOPA in the context of the Solvency II 2020 review. Therefore, this chapter discusses this technical advice in some detail. Recovery and resolution frameworks, particularly ex-ante planning, requires insurance companies and insurance groups to expand their focus from the regular going concern focus to adverse circumstances, including the ability to recover and to be resolved in orderly manner. The chapter assesses the consequences this change of focus might have on the governance of insurance companies and groups.
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Atwell, Mary Stewart. « “You Will Be Surprised that Fiction Has Become an Art” : The Language of Craft and the Legacy of Henry James ». Dans New Directions in Book History, 79–105. Cham : Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-53614-5_3.

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AbstractAs some scholars have noted, the technical principles that modern creative writing workshops identify as “the craft of fiction” owe a great deal to Henry James and the prefaces to the New York edition of his novels, later published in a single volume as The Art of the Novel. However, James, far from setting out to help aspiring writers to develop their technical knowledge, was in fact fairly hostile to the very idea of craft, famously declaring that he “cannot imagine composition existing in a series of blocks.” The prefaces were instead intended to provide a sort of Cliff’s Notes to his own work, naming the tricks of his trade for the edification of his most dedicated readers, and it was these readers, most notably including Percy Lubbock, Joseph Warren Beach, and Caroline Gordon, who adapted James’s principles in some of the first literary handbooks used in the creative writing classroom. Though Lubbock, Beach, and Gordon borrowed significantly from James, they balanced his emphasis on aesthetics with the more accessible and egalitarian approach of earlier authors of fiction-writing handbooks, including the work of Walter Besant. This essay argues that a scholarly examination of the historical development of the discourse of the craft of writing serves not only to correct an over-emphasis on James’s influence, but also to address the equally erroneous assumption that principles of technique are eternal and universal, and thus exist apart from subject position and historical contingency.
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Yelenik, Stephanie G., Carla M. D'Antonio, Evan M. Rehm et Iain R. Caldwell. « Multiple feedbacks due to biotic interactions across trophic levels can lead to persistent novel conditions that hinder restoration. » Dans Plant invasions : the role of biotic interactions, 402–20. Wallingford : CABI, 2020. http://dx.doi.org/10.1079/9781789242171.0402.

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Abstract Unlike traditional successional theory, Alternate Stable Equilibrium (ASE) theory posits that more than one community state is possible in a single environment, depending on the order that species arrive. ASE theory is often invoked in management situations where initial stressors have been removed, but native-dominated communities are not returning to degraded areas. Fundamental to this theory is the assumption that equilibria are maintained by positive feedbacks between colonizers and their environment. While ASE has been relatively well studied in aquatic ecosystems, more complex terrestrial systems offer multiple challenges, including species interactions across trophic levels that can lead to multiple feedbacks. Here, we discuss ASE theory as it applies to terrestrial, invaded ecosystems, and detail a case study from Hawai'i that exemplifies how species interactions can favour the persistence of invaders, and how an understanding of interactions and feedbacks can be used to guide management. Our system includes intact native-dominated mesic forest and areas cleared for pasture, planted with non-native grasses, and later planted with a monoculture of a native nitrogen-fixing tree in an effort to restore forests. We discuss interactions between birds, understorey fruiting native species, understorey non-native grasses, soils and bryophytes in separate feedback mechanisms, and explain our efforts to identify which of these feedbacks is most important to address in a management context. Finally, we suggest that using models can help overcome some of the challenges that terrestrial ecosystems pose when studying ASE.
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Actes de conférences sur le sujet "Single-assumption"

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Hara, Nishino et Ikeuchi. « Determining reflectance and light position from a single image without distant illumination assumption ». Dans ICCV 2003 : 9th International Conference on Computer Vision. IEEE, 2003. http://dx.doi.org/10.1109/iccv.2003.1238397.

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Banić, Nikola, et Sven Lončarić. « Blue Shift Assumption : Improving Illumination Estimation Accuracy for Single Image from Unknown Source ». Dans 14th International Conference on Computer Vision Theory and Applications. SCITEPRESS - Science and Technology Publications, 2019. http://dx.doi.org/10.5220/0007394101910197.

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Kasa, Temesgen Takele. « Continuum Dislocations and Active Single-slip Assumption in MicroMechanical analysis of Matrix Dominated Composite Unit cell ». Dans Canadian Society for Mechanical Engineering International Congress (2020 : Charlottetown, PE). Charlottetown, P.E.I. : University of Prince Edward Island. Robertson Library, 2020. http://dx.doi.org/10.32393/csme.2020.1257.

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Tkaczyk, Eric R., Sylvain Rivet, Lionel Canioni, Stephane Santran et Laurent Sarger. « Moment-based Description for Assumption-free Single-shot Measurement of Femtosecond Laser Pulse Parameters via Two-photon-induced Photocurrents ». Dans 2006 Northern Optics. IEEE, 2006. http://dx.doi.org/10.1109/no.2006.348376.

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Iwashita, Tsutomu, Ryohei Kobayashi et Koji Azuma. « Assessment of Brittle Fracture for Single Edge Notched Bend Specimens With Different Machined-Notch Depth ». Dans ASME 2013 32nd International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/omae2013-11144.

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Current defect assessment procedures based on fracture mechanics usually assume flaws to be infinitely sharp. While this assumption may be appropriate for fatigue cracks, it can be an over-conservative assumption and give a large safety factor for non-sharp flaws such as porosity or weld undercut because of the loss of plastic constraint. Fracture toughness tests are performed for four types of single-edge notched bend steel specimens with different degrees of plastic constraint caused by a machined-notch and a shallow notch. This paper shows the ability of the Weibull stress approach to predict brittle fracture under both high and low plastic constraint conditions. The Weibull stress approach predicts the effects accurately.
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Ryu, Seung Hyup, Ki Doo Kim, Wook Hyeon Yoon et Ji Soo Ha. « A Study on the Calculation of Heat Release Rate to Compensate the Error Due to Single Zone Assumption in Diesel Engine ». Dans ASME 2005 Internal Combustion Engine Division Fall Technical Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/icef2005-1298.

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Accurate heat release analysis based on the cylinder pressure trace is important for evaluating combustion process of diesel engines. However, traditional single-zone heat release models (SZM) have significant limitations due mainly to their simplified assumptions of uniform charge and homogeneity while neglecting local temperature distribution inside cylinder during combustion process. In this study, a heat release analysis based on single-zone model has been evaluated by comparison with computational analysis result using Fire-code, which is based on multi-dimensional model (MDM). The limitations of the single-zone assumption have been estimated. To overcome these limitations, an improved model that includes the effects of spatial non-uniformity has been applied. From this improved single-zone heat release model (Improved-SZM), two effective values of specific heats ratios, denoted by γV and γH in this study, have been introduced. These values are formulated as the function of charge temperature changing rate and overall equivalence ratio by matching the results of the single-zone analysis to those of computational analysis using Fire-code about medium speed marine diesel engine. Also, it is applied that each equation of γV and γH has respectively different slopes according to several meaningful regions such as the start of injection, the end of injection, the maximum cylinder temperature, and the exhaust valve open. This calculation method based on improved single-zone model gives a good agreement with Fire-code results over the whole range of operating conditions.
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Kim, Dong-Ok, Woo-Seok Choi, Keun-Bae Park et Won-Jae Lee. « Dynamics and Responses of a Single Flexible Block on a Vibrating Floor ». Dans 16th International Conference on Nuclear Engineering. ASMEDC, 2008. http://dx.doi.org/10.1115/icone16-48316.

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Graphite blocks constituting the reactor core of a typical prismatic type HTGR form a group of graphite block columns. The seismic analysis of a HTGR core structure composed of stacked prismatic graphite blocks has been an important design issue. In a tall column of stacked graphite blocks, the flexibility of blocks can not be ignored in the dynamic analysis. This paper proposes a dynamic model of flexible block and presents response analysis results of a single flexible block on a vibrating floor, and compared them to the classical ones of with a rigid assumption.
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Halloran, Jason, Scott Sibole et Ahmet Erdemir. « Three Dimensional Cellular Loading and Average Microstructural Tissue Response Using Single and Three Cell Models ». Dans ASME 2011 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2011. http://dx.doi.org/10.1115/sbc2011-53663.

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Finite element analysis of single cells embedded in an extracellular matrix have been used widely to provide new insights into the cellular loading in cartilage [1] and meniscus [2]. Deformations derived from a homogeneous tissue model are generally used to drive simulations using microstructural representations. Implicit in this setup is the assumption of the equivalence of macrostructural (tissue) constitutive response and average stress-strain response of the microstructural (cellular) model. Higher cell densities within tissue volume [3] may increase the uncertainty introduced by this assumption and may also influence how macroscopic loads are transferred to the cells. We have previously shown, albeit with a two-dimensional simulation, the potential mismatches in such variables for increasing strain level and cell density, specifically for no cell, one, and three cell representations [4]. Hence, the objective of this study was to quantify the differences between the overall response and cellular deformation in three-dimensional nonlinearly elastic microstructural cartilage models embedded with either one or three cells. Multiscale coupling approaches targeting prediction of cell deformations from tissue and/or organ level loading will likely benefit from this investigation while balancing computational demand with accuracy requirements.
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Marzban, Mostapha, et Dina Alizadeh. « Positioning and Tracking Control of an Amphibious Single Wheel Robot ». Dans ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-66281.

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Amphibious single wheel robot consists of a sharp-edged wheel actuated by a spinning flywheel for steering and a drive motor for propulsion. The spinning flywheel acts as a gyroscope to stabilize the robot and also can be tilted to achieve steering. In this paper, the kinematics of a single wheel robot in water, Gyrover, is analyzed and then a simple mechanism for driving it is proposed. In previous studies, Lagrange approach is used for hydrodynamic modeling of the robot. A nonlinear position controller is designed to bring the robot to any desired position. Based on the designed controller, a tracking controller is augmented to the robot. For simplicity the added mass effect has been neglected in hydrodynamic analysis. Since the robot under consideration is compact and slow enough, this assumption is not far from reality.
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Bapat, Akhilesh V., et Satish G. Kandlikar. « Effect of Non Uniform Flow Distribution on Single Phase Heat Transfer in Parallel Microchannels ». Dans ASME 2007 5th International Conference on Nanochannels, Microchannels, and Minichannels. ASMEDC, 2007. http://dx.doi.org/10.1115/icnmm2007-30186.

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The continuum assumption has been widely accepted for single phase liquid flows in microchannels. There are however a number of publications which indicate considerable deviation in thermal and hydrodynamic performance during laminar flow in microchannels. In the present work, experiments have been performed on six parallel microchannels with varying cross-sectional dimensions. A careful assessment of friction factor and heat transfer in is carried out by properly accounting for flow area variations and the accompanying non-uniform flow distribution in individual channels. These factors seem to be responsible for the discrepancy in predicting friction factor and heat transfer using conventional theory.
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Rapports d'organisations sur le sujet "Single-assumption"

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Daudelin, Francois, Lina Taing, Lucy Chen, Claudia Abreu Lopes, Adeniyi Francis Fagbamigbe et Hamid Mehmood. Mapping WASH-related disease risk : A review of risk concepts and methods. United Nations University Institute for Water, Environment and Health, décembre 2021. http://dx.doi.org/10.53328/uxuo4751.

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The report provides a review of how risk is conceived of, modelled, and mapped in studies of infectious water, sanitation, and hygiene (WASH) related diseases. It focuses on spatial epidemiology of cholera, malaria and dengue to offer recommendations for the field of WASH-related disease risk mapping. The report notes a lack of consensus on the definition of disease risk in the literature, which limits the interpretability of the resulting analyses and could affect the quality of the design and direction of public health interventions. In addition, existing risk frameworks that consider disease incidence separately from community vulnerability have conceptual overlap in their components and conflate the probability and severity of disease risk into a single component. The report identifies four methods used to develop risk maps, i) observational, ii) index-based, iii) associative modelling and iv) mechanistic modelling. Observational methods are limited by a lack of historical data sets and their assumption that historical outcomes are representative of current and future risks. The more general index-based methods offer a highly flexible approach based on observed and modelled risks and can be used for partially qualitative or difficult-to-measure indicators, such as socioeconomic vulnerability. For multidimensional risk measures, indices representing different dimensions can be aggregated to form a composite index or be considered jointly without aggregation. The latter approach can distinguish between different types of disease risk such as outbreaks of high frequency/low intensity and low frequency/high intensity. Associative models, including machine learning and artificial intelligence (AI), are commonly used to measure current risk, future risk (short-term for early warning systems) or risk in areas with low data availability, but concerns about bias, privacy, trust, and accountability in algorithms can limit their application. In addition, they typically do not account for gender and demographic variables that allow risk analyses for different vulnerable groups. As an alternative, mechanistic models can be used for similar purposes as well as to create spatial measures of disease transmission efficiency or to model risk outcomes from hypothetical scenarios. Mechanistic models, however, are limited by their inability to capture locally specific transmission dynamics. The report recommends that future WASH-related disease risk mapping research: - Conceptualise risk as a function of the probability and severity of a disease risk event. Probability and severity can be disaggregated into sub-components. For outbreak-prone diseases, probability can be represented by a likelihood component while severity can be disaggregated into transmission and sensitivity sub-components, where sensitivity represents factors affecting health and socioeconomic outcomes of infection. -Employ jointly considered unaggregated indices to map multidimensional risk. Individual indices representing multiple dimensions of risk should be developed using a range of methods to take advantage of their relative strengths. -Develop and apply collaborative approaches with public health officials, development organizations and relevant stakeholders to identify appropriate interventions and priority levels for different types of risk, while ensuring the needs and values of users are met in an ethical and socially responsible manner. -Enhance identification of vulnerable populations by further disaggregating risk estimates and accounting for demographic and behavioural variables and using novel data sources such as big data and citizen science. This review is the first to focus solely on WASH-related disease risk mapping and modelling. The recommendations can be used as a guide for developing spatial epidemiology models in tandem with public health officials and to help detect and develop tailored responses to WASH-related disease outbreaks that meet the needs of vulnerable populations. The report’s main target audience is modellers, public health authorities and partners responsible for co-designing and implementing multi-sectoral health interventions, with a particular emphasis on facilitating the integration of health and WASH services delivery contributing to Sustainable Development Goals (SDG) 3 (good health and well-being) and 6 (clean water and sanitation).
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