Relevant bibliographies by topics / Two continuum model

Contents

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

Academic literature on the topic 'Two continuum model'

Author: Grafiati
Published: 2 July 2021
Last updated: 1 February 2022

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

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Two continuum model.'

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

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

Journal articles on the topic "Two continuum model"

1

Xiao, Zhiguang, and Zhi-Yong Zhou. "On Friedrichs model with two continuum states." Journal of Mathematical Physics 58, no. 6 (June 2017): 062110. http://dx.doi.org/10.1063/1.4989832.

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

Deijfen, Maria, and Olle Häggström. "Coexistence in a two-type continuum growth model." Advances in Applied Probability 36, no. 04 (December 2004): 973–80. http://dx.doi.org/10.1017/s0001867800013264.

Full text
Abstract:
We consider a stochastic model describing the growth of two competing infections on ℝ d . The growth takes place by way of spherical outbursts in the infected region, an outburst in the type-1 or -2 infected region causing all previously uninfected points within a stochastic distance from the outburst location to become type-1 or -2 infected, respectively. The main result is that, if the infection types have the same intensity, then there is a strictly positive probability that both infection types grow unboundedly.
APA, Harvard, Vancouver, ISO, and other styles
3

Head, A. K., S. D. Howison, J. R. Ockendon, J. B. Titchener, and P. Wilmott. "A continuum model for two-dimensional dislocation distributions." Philosophical Magazine A 55, no. 5 (May 1987): 617–29. http://dx.doi.org/10.1080/01418618708214372.

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

Anazawa, M., A. Ishikawa, and H. Itoyama. "Continuum annulus amplitudes from the two-matrix model." Physical Review D 52, no. 10 (November 15, 1995): 6016–19. http://dx.doi.org/10.1103/physrevd.52.6016.

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

Hoyle, Rebecca B., and Anita Mehta. "Two-Species Continuum Model for Aeolian Sand Ripples." Physical Review Letters 83, no. 24 (December 13, 1999): 5170–73. http://dx.doi.org/10.1103/physrevlett.83.5170.

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

Deijfen, Maria, and Olle Häggström. "Coexistence in a two-type continuum growth model." Advances in Applied Probability 36, no. 4 (December 2004): 973–80. http://dx.doi.org/10.1239/aap/1103662953.

Full text
Abstract:
We consider a stochastic model describing the growth of two competing infections on ℝd. The growth takes place by way of spherical outbursts in the infected region, an outburst in the type-1 or -2 infected region causing all previously uninfected points within a stochastic distance from the outburst location to become type-1 or -2 infected, respectively. The main result is that, if the infection types have the same intensity, then there is a strictly positive probability that both infection types grow unboundedly.
APA, Harvard, Vancouver, ISO, and other styles
7

Zdravković, S., S. Zeković, A. N. Bugay, and J. Petrović. "Two component model of microtubules and continuum approximation." Chaos, Solitons & Fractals 152 (November 2021): 111352. http://dx.doi.org/10.1016/j.chaos.2021.111352.

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

Mi, Qi, David Swigon, and Beatrice Riviere. "Two-dimensional elastic continuum model of enterocyte layer migration." Journal of Critical Care 22, no. 4 (December 2007): 350. http://dx.doi.org/10.1016/j.jcrc.2007.10.034.

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

Ryś, M., and B. Skoczeń. "Coupled constitutive model of damage affected two-phase continuum." Mechanics of Materials 115 (December 2017): 1–15. http://dx.doi.org/10.1016/j.mechmat.2017.08.015.

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

Yu, Lei. "A new continuum traffic flow model with two delays." Physica A: Statistical Mechanics and its Applications 545 (May 2020): 123757. http://dx.doi.org/10.1016/j.physa.2019.123757.

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

Dissertations / Theses on the topic "Two continuum model"

1

Laurie, Henri De Guise. "The general continuum model for structured populations, with two case studies in plant ecology." Doctoral thesis, University of Cape Town, 1994. http://hdl.handle.net/11427/18243.

Full text
Abstract:
Bibliography: p. 129-143.
The broad aim of this thesis is to investigate the formulation and usefulness of a very general model for plant population dynamics. In chapter 1, the goal of generality is discussed, particularly in the light of the lack of interaction between field and experimental population studies on the one hand and theoretical population dynamics on the other hand. A distinction is ma.de between descriptive and axiomatic theories, and it is suggested that they serve different purposes. The advantages of a. rigorous framework are pointed out and the basic elements of the continuum approach are introduced. In chapter 2, the model is proposed, the existence and uniqueness of solutions to its equations is proved, and an algorithm for numerically -approximating transient solutions is discussed. The question of generality is addressed in two places, and it is argued that the basic framework presented here is in principle adequate to model the processes of plant population dynamics in full detail, though the existence proof cannot to accommodate all possible models. In particular, models with time lags are excluded. Further limitations of the existence proof ill terms of constitutive relations are pointed out. In consequence, the theory here presented does not fully exploit the possibilities for generality inherent in the basic equations. In chapter 3, the question of what data would allow identification of factors determining somatic growth and mortality is investigated computationally. It is shown that using only the average size is insufficient. A class of models which includes all possible combinations of three types of size dependence in somatic growth and mortality is formulated. Qualitative parameter estimation for the various models yields size distributions that can be classified into the following biologically meaningful groups: group (i) has no models that use dependence on relative size; group (ii) has all the models in which somatic growth depends on relative size group (iii) has the models where only mortality depends on relative size. Thus it appears that size distribution may be used to distinguish various forms of size dependence in somatic growth and mortality. In chapter 4, a lottery model criterion for coexistence of plants with disjoint generations is developed, which is shown to require relative density dependence. Computer simulations aiming to initiate the use of exploratory calculations in studies of coexisting serotinous proteoids in fynbos indicate that the aspect of plant population dynamics most sensitive to density dependence is seed production, then somatic growth, while mortality is least sensitive to density dependence.
APA, Harvard, Vancouver, ISO, and other styles
2

Miller, Ryan Michael. "Continuum Modeling of Liquid-Solid Suspensions for Nonviscometric Flows." Diss., Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/4864.

Full text
Abstract:
A suspension flow model based on the "suspension balance" approach has been developed. This work modifies the model to allow the solution of suspension flows under general flow conditions. This requires the development of a frame-invariant constitutive model for the particle stress which can take into account the spatially-varying local kinematic conditions. The mass and momentum balances for the bulk suspension and particle phase are solved numerically using a finite volume method. The particle stress is based upon the computed rate of strain and the local kinematic conditions. A nonlocal stress contribution corrects the continuum approximation of the particle phase for finite particle size effects. Local kinematic conditions are accounted through the local ratio of rotation to extension in the flow field. The coordinates for the stress definition are the local principal axes of the rate of strain field. The developed model is applied to a range of problems. (i) Axially-developing conduit flows are computed using both the full two-dimensional solution and the more computationally efficient "marching" method. The model predictions are compared to experimental results for cross-stream particle concentration profiles and axial development lengths. (ii) Model predictions are compared to experiments for wide-gap circular Couette flow of a concentrated suspension in a shear-thinning liquid. With minor modification, the suspension flow model predicts the major trends and results observed in this flow. (iii) Comparisons are made to experiments for an axisymmetric contraction-expansion. Model predictions for a two-dimensional planar contraction flow test the influence of model formulation. The variation of the magnitude of an isotropic particle normal stress with local kinematic conditions and anisotropy in the in-plane normal stresses are both explored. The formulation of the particle phase stress is found to have significant effects on the solid fraction and velocity. (iv) Finally, for a rectangular piston-driven flow and an obstructed channel flow, a "computational suspension dynamics" study explores the effect of particle migration on the bulk flow field, system pressure drop and particle phase composition.
APA, Harvard, Vancouver, ISO, and other styles
3

Bhamare, Sagar D. "High Cycle Fatigue Simulation using Extended Space-Time Finite Element Method Coupled with Continuum Damage Mechanics." University of Cincinnati / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1352490187.

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

Mottet, Laetitia. "Simulations of heat and mass transfer within the capillary evaporator of a two-phase loop." Thesis, Toulouse, INPT, 2016. http://www.theses.fr/2016INPT0012/document.

Full text
Abstract:
Le contrôle thermique des composants électroniques embarqués dans les engins spatiaux est souvent assuré par des boucles fluides diphasiques à pompage capillaire (Loop Heat Pipe (LHP) ou Capillary Pumped Loop (CPL)). La présente étude est centrée sur les évaporateurs des LHP. Ils sont composés principalement d’un bâti métallique, d’une mèche poreuse et de cannelures. Le milieu poreux est initialement saturé en liquide. La charge thermique à évacuer est appliquée sur le bâti entraînant la vaporisation du liquide au sein de la mèche. La vapeur est ensuite récoltée au sein des cannelures pour être évacuée. L’étude est effectuée sur une cellule unitaire de l’évaporateur. Dans le but d’étudier les transferts de masse et de chaleur, un modèle de réseau de pores 3D dit mixte a été développé. Les champs de pression et de température sont calculés à partir des équations macroscopiques tandis que la capillarité est gérée à l’aide d’une approche réseau de pore classique. L’un des avantages d’une telle formulation est de pouvoir accéder à la répartition des phases liquide et vapeur au sein de l’espace poral du milieu poreux. Il a ainsi été mis en évidence qu’une zone diphasique (zone où le liquide et la vapeur coexistent) se met en place pour une large gamme de flux lorsque la vapeur apparait dans la structure capillaire. Cette zone diphasique est localisée sous le bâti métallique et est corrélée avec les meilleures performances thermiques de l’évaporateur. Cette observation diffère fortement de l’hypothèse souvent considérée de la présence d’une zone sèche dans cette région. Trois positions différentes de cannelures ont été étudiées. Il a ainsi pu être mis en évidence que la plus large gamme de flux, pour laquelle les performances de l’évaporateur sont les meilleures, est obtenue lorsque les cannelures sont usinées à la surface extérieure de la mèche. Toujours dans le but d’améliorer les performances thermiques de l’évaporateur, une étude paramétrique a été menée pour mettre en évidence les paramètres qui influencent positivement la conductance de l’évaporateur. Finalement, l’étude de l’influence d’une mèche biporeuse/bidispersée, c’est-à-dire d’un milieu poreux caractérisé par deux tailles de pores/liens différentes, a été menée. La distribution des phases liquide et vapeur au sein de la structure capillaire bidispersée est différente de celle d’un milieu mono-poreux du fait des chemins préférentiels créés par les larges pores. Par ailleurs, l’analyse thermique a montré qu’un tel milieu poreux permet de réduire considérablement la température du bâti ainsi que d’augmenter les performances thermiques de l’évaporateur. Un deuxième modèle basé sur une approche continue a été développé. Cette méthode utilise l’algorithme IMPES (IMplicit Pressure Explicit Saturation) et est couplé à la résolution du champ de température avec changement de phase. Ce type de résolution permet d’accéder à un champ de saturation. Les résultats ainsi obtenus sont en bon accord avec ceux prédits par le modèle réseau de pores mixte. Le modèle continu, moins gourmand en temps de calcul, permet d’envisager des simulations sur une plus grande partie de l’évaporateur
The thermal control of electronic devices embedded in spacecraft is often carried out by capillary twophase loop systems (Loop Heat Pipe (LHP) or Capillary Pumped Loop (CPL)). This thesis focuses on the LHP evaporators. They mostly consist of a metallic casing, a porous wick and vapour grooves. The porous medium is initially saturated with liquid. The heat load is applied at the external surface of the casing inducing the vaporisation of the liquid within the wick. The vapour is then evacuated thanks to the vapour grooves. A unit cell of the evaporator is studied and corresponds to our computational domain. A so-called 3D mixed pore network model has been developed in order to study the heat and mass transfers. Pressure and temperature fields are computed from macroscopic equations, while the capillarity is managed using the classical pore network approach. The main advantage of such formulation is to obtain the liquid-vapour phase distribution within the porous medium pore space. The work highlights that a two-phase zone (characterized by the coexistence of the liquid and the vapour) exists for a large range of fluxes when vaporisation takes place within the capillary structure. This twophase zone is located right under the casing and is positively correlated with the best evaporator thermal performances. This result differs from the often made assumption of a dry region under the casing. Three different groove locations are tested. This investigation highlights that evaporator thermal performances are the best over a large range of fluxes for grooves manufactured at the external surface of the wick. In complement, a parametric study is performed to highlight parameters which impact positively the evaporator thermal performances. Finally, a biporous/bidispersed wick, i.e. a wick with a bimodal pore/throat size distribution, is studied. The liquidvapour phase distribution within the capillary structure is different from the one for a monoporous structure due to preferential vapour paths created by the large throats and pores-network. Moreover, the thermal analysis shows that such a porous medium permits to reduce considerably the evaporator wall temperature and to increase the evaporator thermal performances. A second model is developed based on a continuum approach. This method uses the IMPES (IMplicit Pressure Explicit Saturation) algorithm coupled with the heat transfer with phase change. Results are in good agreement with those predicted by the mixed pore network model. The continuum model, requiring less computing time, should allow considering larger sub domains of the evaporator
APA, Harvard, Vancouver, ISO, and other styles
5

Fischer, Joern, and joern@cres anu edu au. "Beyond fragmentation : Lizard distribution patterns in two production landscapes and their implications for conceptual landscape models." The Australian National University. Centre for Resource and Environmental Studies, 2004. http://thesis.anu.edu.au./public/adt-ANU20060718.150101.

Full text
Abstract:
Fauna conservation outside protected areas can make an important complementary contribution to conservation within reserves. This thesis aimed to contribute new information and analytical frameworks to the science of fauna conservation in human-modified landscapes. Two approaches were used: (1) empirical data collection and analysis, and (2) the discussion and development of conceptual landscape models. ¶ Empirical work focused on lizard distribution patterns in two production landscapes in southeastern Australia. Lizards were targeted because ectotherms are frequently neglected by conservation biologists. The “Nanangroe grazing landscape” was used for sheep and cattle grazing. In this landscape, approximately 85% of pre-European woodland cover had been cleared, and understorey vegetation was sparse. Lizards were surveyed at 16 landscape units, which were stratified by aspect, topographic position and amount of tree cover. Each landscape unit contained three sites, and each site contained three plots. Regression modelling showed that different species responded differently to their environment. For example, the four-fingered skink (Carlia tetradactyla) and Boulenger’s skink (Morethia boulengeri) were more likely to occur at woodland sites with northerly aspects, whereas the striped skink (Ctenotus robustus) and olive legless lizard (Delma inornata) were more likely to inhabit sites with a simple microhabitat structure. Statistical analysis further showed that the habitat attributes that lizards were related to varied continuously through space, and over different spatial scales. For example, invertebrate abundance (a proxy for food availability) varied most strongly over tens of metres, whereas the amount of grass cover varied most strongly over hundreds to thousands of metres. Thus, work at Nanangroe revealed spatially complex patterns of lizard occurrence and habitat variables. ¶ The “Tumut plantation landscape” was a spatial mosaic of native eucalypt (Eucalyptus) forest patches embedded within a plantation of the introduced radiata pine (Pinus radiata). In this landscape, thirty sites were surveyed for lizards. Sites were stratified by forest type and patch size, and included eucalypt patches, pine sites, and extensive areas of eucalypt forest adjacent to the plantation. Regression modelling showed that lizard species responded to various habitat attributes, including elevation, the amount of eucalypt forest within 1 km of a site, invertebrate abundance and ground cover. Variables related to habitat fragmentation often were significant predictors of lizard occurrence. However, work at Tumut suggested that important additional insights into lizard distribution patterns could be obtained by considering variables related to food and shelter resources, and climatic conditions. ¶ The Nanangroe and Tumut landscapes were in close proximity, but together spanned an altitudinal gradient of 900 m. An investigation of changes in lizard community composition with altitude showed that (1) only one species was common to Nanangroe and Tumut, (2) different species had different altitudinal preferences, and (3) ecologically similar species replaced one another with increasing altitude. These results highlighted that even in highly modified landscapes, natural gradients (such as climate) can play an important role in shaping animal assemblage composition and species distribution patterns. ¶ Empirical work suggested that, in some landscapes, the frequently used “fragmentation model” is a relatively weak conceptual basis for the study of animal distribution patterns. The fragmentation model implicitly assumes that “habitat patches” can be defined unequivocally across many species, and that patches are located within a relatively inhospitable matrix. Where these assumptions are breached, conservation guidelines arising from the fragmentation model may be too simplified. In spatially complex production landscapes, it may be more appropriate to maintain habitat heterogeneity at multiple spatial scales than to focus solely on the management of large, pre-defined patches. ¶ Given the potential limitations of the fragmentation model, a new, more holistic landscape model was developed. The “continuum model” was derived from continuum theory as developed for plant ecology. The continuum model recognises (1) spatial continua of environmental variables, and (2) species’ individualistic responses to these variables. For animals, key environmental variables may be related to the availability of food, shelter, sufficient space, and suitable climatic conditions. Unlike the fragmentation model, the continuum model is inherently process-based and thus may help to link the perceived gap between patterns and processes in landscape ecology. ¶ Three general conclusions arise from this thesis: 1. Some heterogeneous production landscapes support many native species, and therefore represent important conservation opportunities. 2. In some modified landscapes, the fragmentation model does not capture the complexity of animal distribution patterns. In those landscapes, conservation recommendations derived from the fragmentation model may be overly simplistic. 3. The continuum model may be a useful extension of the fragmentation model. It provides a process-based conceptual basis for empirical work on animal distribution patterns.
APA, Harvard, Vancouver, ISO, and other styles
6

辛樹豪 and Shu-ho Sun. "A two-dimensional continuum approach to facility location problems." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1999. http://hub.hku.hk/bib/B31223394.

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

Olsen, Tyler J. (Tyler John). "The two-way street between discrete and continuum models of particle systems." Thesis, Massachusetts Institute of Technology, 2018. http://hdl.handle.net/1721.1/120258.

Full text
Abstract:
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2018.
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 175-184).
Many systems exhibit behavior across multiple length scales. When modeling the behavior of such systems, simplifying assumptions are commonly made to reduce model complexity while still capturing system behavior accurately at a length scale of interest. However, it can frequently be advantageous to explicitly incorporate information about a smaller length scale. We present two examples from diverse fields using this approach. First, we propose a model to describe the evolution of a flowing, microstructured suspension of conductive particles, which are being considered for use in large-scale energy storage technologies. In such a suspension, the microstructure of the contact network between particles gives rise to macroscopic electrical conductivity. Developing this model consists of two phases: 1) developing a discrete model for the conductivity of a simplified network, and 2) embedding the discrete model into the framework of modern continuum mechanics. The resulting model takes the form of a tensorial evolution law, like those typically seen in continuum constitutive relationships. The model has been validated experimentally and is able to predict both steady-state and transient conductivity more accurately than pre-existing models in the literature. The second application that we consider is the simulation of many-rigid- body systems. Treating stiff, elastic bodies in contact as perfectly rigid-an approach commonly referred to as Contact Dynamics (CD)-simplifies some aspects of their behavior and can alleviate considerable computational burden. However, in many cases the neglect of elasticity results in indeterminate systems, a problem that prevents CD from being used in many real-world applications. We show that information from elasticity can be re-introduced as a compatibility condition while retaining the assumption of perfect rigidity. This preserves the computational advantages of an optimization-based CD method. The new method is exact in the absence of friction and shows improved force calculation for frictional granular systems.
by Tyler John Olsen.
Ph. D.
APA, Harvard, Vancouver, ISO, and other styles
8

Terriberry, Timothy B. Gerig Guido. "Continuous medial models in two-sample statistics of shape." Chapel Hill, N.C. : University of North Carolina at Chapel Hill, 2006. http://dc.lib.unc.edu/u?/etd,579.

Full text
Abstract:
Thesis (Ph. D.)--University of North Carolina at Chapel Hill, 2006.
Title from electronic title page (viewed Oct. 10, 2007). "... in partial fulfillment of the requirements for the degree of Doctor of Philosophy in the Department of Computer Science." Discipline: Computer Science; Department/School: Computer Science.
APA, Harvard, Vancouver, ISO, and other styles
9

Collins, Sean E. "Comparing hypotheses proposed by two conceptual models for stream ecology." University of Cincinnati / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1396532770.

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

Ayana, Haimanot, and Sarah Al-Swej. "A review of two financial market models: the Black--Scholes--Merton and the Continuous-time Markov chain models." Thesis, Mälardalens högskola, Akademin för utbildning, kultur och kommunikation, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-55417.

Full text
Abstract:
The objective of this thesis is to review the two popular mathematical models of the financialderivatives market. The models are the classical Black–Scholes–Merton and the Continuoustime Markov chain (CTMC) model. We study the CTMC model which is illustrated by themathematician Ragnar Norberg. The thesis demonstrates how the fundamental results ofFinancial Engineering work in both models.The construction of the main financial market components and the approach used for pricingthe contingent claims were considered in order to review the two models. In addition, the stepsused in solving the first–order partial differential equations in both models are explained.The main similarity between the models are that the financial market components are thesame. Their contingent claim is similar and the driving processes for both models utilizeMarkov property.One of the differences observed is that the driving process in the BSM model is the Brownianmotion and Markov chain in the CTMC model.We believe that the thesis can motivate other students and researchers to do a deeper andadvanced comparative study between the two models.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "Two continuum model"

1

Jie, Wu. Simulation of two-fluid flows by the least-squares finite element method using a continuous surface tension model. [Cleveland, Ohio]: National Aeronautics and Space Administration, Lewis Research Center, Institute for Computational Mechanics in Propulsion, 1996.

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

Wu, Jie. Simulation of two-fluid flows by the least-squares finite element method using a continuous surface tension model. [Cleveland, Ohio]: National Aeronautics and Space Administration, Lewis Research Center, Institute for Computational Mechanics in Propulsion, 1996.

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

Decker, Rand. Constitutive relationships and models in continuum theories of multiphase flows: Proceedings of a workshop sponsored by the National Aeronautics and Space Administration, Washington, D.C., and the Universities Space Research Association, Washington, D.C., and held at George C. Marshall Space Flight Center, Huntsville, Alabama, April 5-7, 1989. Huntsville, Ala: Marshall Space Flight Center, 1989.

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

Chekhov, Leonid. Two-dimensional quantum gravity. Edited by Gernot Akemann, Jinho Baik, and Philippe Di Francesco. Oxford University Press, 2018. http://dx.doi.org/10.1093/oxfordhb/9780198744191.013.30.

Full text
Abstract:
This article discusses the connection between large N matrix models and critical phenomena on lattices with fluctuating geometry, with particular emphasis on the solvable models of 2D lattice quantum gravity and how they are related to matrix models. It first provides an overview of the continuum world sheet theory and the Liouville gravity before deriving the Knizhnik-Polyakov-Zamolodchikov scaling relation. It then describes the simplest model of 2D gravity and the corresponding matrix model, along with the vertex/height integrable models on planar graphs and their mapping to matrix models. It also considers the discretization of the path integral over metrics, the solution of pure lattice gravity using the one-matrix model, the construction of the Ising model coupled to 2D gravity discretized on planar graphs, the O(n) loop model, the six-vertex model, the q-state Potts model, and solid-on-solid and ADE matrix models.
APA, Harvard, Vancouver, ISO, and other styles
5

Simulation of two-fluid flows by the least-squares finite element method using a continuous surface tension model. [Cleveland, Ohio]: National Aeronautics and Space Administration, Lewis Research Center, Institute for Computational Mechanics in Propulsion, 1996.

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

Simulation of two-fluid flows by the least-squares finite element method using a continuous surface tension model. [Cleveland, Ohio]: National Aeronautics and Space Administration, Lewis Research Center, Institute for Computational Mechanics in Propulsion, 1996.

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

Vibla, Natalia. Toward a Theoretical and Practical Model for Multiple-Offense Sentencing. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780190607609.003.0009.

Full text
Abstract:
This chapter examines the conflicting positions regarding the sentencing of multiple offenders and proposes a theoretical and practical model for multiple-offense sentencing within the framework of desert theory. It begins with a discussion of desert theory and its two major dimensions of offense seriousness: the harm caused and the culpability of the offender. It then describes several sentencing practices in an attempt to better understand the way that bulk discounts operate. It also explores a number of normative propositions that support the concept of a discount in multiple-offense sentencing, focusing on the absence of normative breaks and overall proportionality based on living standard analysis. Finally, it considers two empirically derived propositions: first, that there is a considerable degree of connectedness between the offenses comprising a multiple-offense case, and second, that there is a continuum in criminal conduct.
APA, Harvard, Vancouver, ISO, and other styles
8

Parker, Gordon, and Amelia Paterson. Should the bipolar disorders be modelled dimensionally or categorically? Oxford University Press, 2017. http://dx.doi.org/10.1093/med/9780198748625.003.0002.

Full text
Abstract:
Historically, there have been categorical models of bipolar disorder and dimensional models of bipolar disorder. This chapter seeks to outline the history of these models as well as some recent supporting research. The models are evaluated in two ways; how well they reflect the underlying nature of bipolar disorder, and how useful they are to the patient and to the clinician in undertaking treatment decisions. The dimensional model posits that depression and bipolar lie on a continuum with pure unipolar depression at one end, bipolar disorder at the other, and some experience of highs without diagnosable (hypo)mania in-between. The categorical model posits that depression and bipolar are entirely separate conditions and that bipolar I and II are separate conditions. It is the position of the authors that the categorical model is a better reflection of the underlying nature of bipolar disorder and has proved more useful in clinical practice.
APA, Harvard, Vancouver, ISO, and other styles
9

Papish, Laura. Kant’s Two-Stage Model of Moral Reform. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780190692100.003.0008.

Full text
Abstract:
This chapter offers an interpretive proposal for Kant’s two-stage model of moral reform in the Religion. Kant explicitly argues that an initial stage of moral conversion must be followed by continual moral progress in the empirical realm, but it is unclear why two stages are needed or how, exactly, they differ from one another. In this chapter, it is argued that one can best understand the first stage if conversion is framed as a kind of commitment, and that one can best understand the second stage if moral progress is conceived more as a cognitive, as opposed to volitional, type of effort. In the final section of this chapter, it is determined that the Metaphysics of Morals presents a compatible account of moral reform. Novel accounts of how to conceptualize moral strength and weakness, and Kant’s emphasis on the importance of empirical conduct, are also offered.
APA, Harvard, Vancouver, ISO, and other styles
10

United States. National Aeronautics and Space Administration. and Atmospheric and Environmental Research, inc., eds. Final report on continued development and validation of the AER two-dimensional interactive model. Cambridge, MA: Atmospheric and Environmental Research, Inc., 1995.

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

Book chapters on the topic "Two continuum model"

1

Arrighini, G. P., N. Durante, and C. Guidotti. "Two-Photon Above-Threshold Ionization: Study of a Schematic Model Atom." In Photons and Continuum States of Atoms and Molecules, 111–17. Berlin, Heidelberg: Springer Berlin Heidelberg, 1987. http://dx.doi.org/10.1007/978-3-642-71778-9_16.

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

Vicente, Lourdes. "Interpretation of Some Properties of Extragalactic Jets in the Context of a Two Component Model." In Multi-Wavelength Continuum Emission of AGN, 433. Dordrecht: Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-010-9537-2_143.

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

Romenski, Evgeniy, Galina Reshetova, Ilya Peshkov, and Michael Dumbser. "Two-Phase Computational Model for Small-Amplitude Wave Propagation in a Saturated Porous Medium." In Continuum Mechanics, Applied Mathematics and Scientific Computing: Godunov's Legacy, 313–20. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-38870-6_41.

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

Hantke, Maren, Christoph Matern, and Gerald Warnecke. "Analytical Results for the Riemann Problem for a Weakly Hyperbolic Two-Phase Flow Model of a Dispersed Phase in a Carrier Fluid." In Continuum Mechanics, Applied Mathematics and Scientific Computing: Godunov's Legacy, 169–75. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-38870-6_22.

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

van der Lans, Rikkert. "A Probabilistic Model for Feedback on Teachers’ Instructional Effectiveness: Its Potential and the Challenge of Combining Multiple Perspectives." In Student Feedback on Teaching in Schools, 73–90. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-75150-0_5.

Full text
Abstract:
AbstractThis chapter describes research into the validity of a teacher evaluation framework that was applied between 2012 and 2016 to provide feedback to Dutch secondary school teachers concerning their instructional effectiveness. In this research project, the acquisition of instructional effectiveness was conceptualized as unfolding along a continuum ranging from ineffective novice to effective expert instructor. Using advanced statistical models, teachers’ current position on the continuum was estimated. This information was used to tailor feedback for professional development. Two instruments were applied to find teachers’ current position on the continuum, namely the International Comparative Assessment of Learning and Teaching (ICALT) observation instrument and the My Teacher–student questionnaire (MTQ). This chapter highlights background theory and central concepts behind the project and it introduces the logic behind the statistical methods that were used to operationalize the continuum of instructional effectiveness. Specific attention is given to differences between students and observers in how they experience teachers’ instructional effectiveness and the resulting disagreement in how they position teachers on the continuum. It is explained how this disagreement made feedback reports less actionable. The chapter then discusses evidence of two empirical studies that examined the disagreement from two methodological perspectives. Finally, it makes some tentative conclusions concerning the practical implications of the evidence.
APA, Harvard, Vancouver, ISO, and other styles
6

Mjøsund, Nina Helen. "A Salutogenic Mental Health Model: Flourishing as a Metaphor for Good Mental Health." In Health Promotion in Health Care – Vital Theories and Research, 47–59. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-63135-2_5.

Full text
Abstract:
AbstractThis chapter focuses on a salutogenic understanding of mental health based on the work of Corey Keyes. He is dedicated to research and analysis of mental health as subjective well-being, where mental health is seen from an insider perspective. Flourishing is the pinnacle of good mental health, according to Keyes. He describes how mental health is constituted by an affective state and psychological and social functioning, and how we can measure mental health by the Mental Health Continuum—Short Form (MHC-SF) questionnaire. Further, I elaborate on Keyes’ two continua model of mental health and mental illness, a highly useful model in the health care context, showing that the absence of mental illness does not translate into the presence of mental health. You can also read about how lived experiences of former patients support Keyes dual model of mental health and mental illness. This model makes it clear that people can perceive they have good mental health even with mental illness, as well as people with perceived poor or low mental health can be without any mental disorder. The cumulative evidence for seeing mental disorder and mental health function along two different continua, central mental health concepts, and research significant for health promotion are elaborated in this chapter.
APA, Harvard, Vancouver, ISO, and other styles
7

Argaman, Nathan. "Annealing of Dislocations in Two Dimensions—Partial Universality." In Continuum Models and Discrete Systems, 209–13. Dordrecht: Springer Netherlands, 2004. http://dx.doi.org/10.1007/978-1-4020-2316-3_32.

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

Rossikhin, Yury A., and Marina V. Shitikova. "Collision of Two Spherical Shells, Fractional Operator Models." In Encyclopedia of Continuum Mechanics, 324–32. Berlin, Heidelberg: Springer Berlin Heidelberg, 2020. http://dx.doi.org/10.1007/978-3-662-55771-6_88.

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

Rossikhin, Yury A., and Marina V. Shitikova. "Collision of Two Spherical Shells, Fractional Operator Models." In Encyclopedia of Continuum Mechanics, 1–9. Berlin, Heidelberg: Springer Berlin Heidelberg, 2018. http://dx.doi.org/10.1007/978-3-662-53605-6_88-1.

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

Jurgk, M., H. Emmerich, and R. Siquieri. "Numerical Simulation of the Growth of Interacting, Equiaxed Dendrites with a Two-Scale Model." In Continuous Casting, 162–67. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2006. http://dx.doi.org/10.1002/9783527607969.ch21.

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

Conference papers on the topic "Two continuum model"

1

Wognum, Silvia, and Michael S. Sacks. "A Structural Continuum Constitutive Model for a Two-Phase Soft Tissue." In ASME 2010 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2010. http://dx.doi.org/10.1115/sbc2010-19480.

Full text
Abstract:
Due to the complexity in determining multi-constituent tissue properties, most structural constitutive models for soft tissues focus on a single constituent. However, many tissues contain multiple load-bearing constituents, such as collagen fibers and smooth muscle (SM) cells. Moreover, to elucidate how observed changes in tissue components are related to altered net mechanical behavior at the tissue level, structural constitutive models require physiological relevant model parameters and formulations for changes in referential configuration when one component is physically removed. As an excellent example application that underscores these issues, we have examined the urinary bladder wall (UBW), which undergoes large deformations and exhibits highly nonlinear and anisotropic mechanical behavior [1,2]. Moreover, it undergoes profound remodeling in response to different pathologies such as spinal cord injury (SCI) [1,2].
APA, Harvard, Vancouver, ISO, and other styles
2

Al Abed, Amr, Nigel H. Lovell, Gregg J. Suaning, and Socrates Dokos. "A continuum neuronal tissue model based on a two-compartmental representation of cells." In 2013 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC). IEEE, 2013. http://dx.doi.org/10.1109/embc.2013.6611054.

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

Li, Weiming, and Samuel Paolucci. "A Two-Phase Model of Bubbly Fluids." In ASME 2007 International Mechanical Engineering Congress and Exposition. ASMEDC, 2007. http://dx.doi.org/10.1115/imece2007-43113.

Full text
Abstract:
We use a continuum theory for multiphase immiscible mixtures whose individual components are separated by infinitesimally thin interfaces. The average balance equations for the different phases, as well as for the mixture, result from a systematic spatial averaging procedure. In addition to equations for mass, momentum, and energy, together with the entropy inequality, the balance equations also include equations for microinertia and microspin tensors. These equations, together with appropriate constitutive equations consistent with the entropy inequality, enable the modeling of immiscible multiphase materials where internal parameters are important. Here, we apply the results to a simple microstretch bubbly fluid. We show that the equations for microspin and microinertia, under a number of simplifying assumptions, combine to yield a general form of the Rayleigh-Plesset equation.
APA, Harvard, Vancouver, ISO, and other styles
4

Mehran, Narges, Dragi Kimovski, and Radu Prodan. "A Two-Sided Matching Model for Data Stream Processing in the Cloud – Fog Continuum." In 2021 IEEE/ACM 21st International Symposium on Cluster, Cloud and Internet Computing (CCGrid). IEEE, 2021. http://dx.doi.org/10.1109/ccgrid51090.2021.00061.

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

Peshkov, Ilya, Miroslav Grmela, and Evgeniy Romenski. "Two-Phase Solid-Fluid Mathematical Model of Yield Stress Fluids." In ASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/smasis2012-7913.

Full text
Abstract:
In this work, we present results on mathematical modelling of polymeric yield stress fluids which have the properties of both elastic solids and fluids. Our research is based on the approach of multiphase continuum mechanics. A two-phase solid-fluid model is developed. This model is thermodynamically compatible and its governing differential equations can be written in a conservative form. Such a model is convenient for application of advanced high-accuracy numerical methods and modelling of discontinuous solutions such as shock waves and contacts.
APA, Harvard, Vancouver, ISO, and other styles
6

Alzebdeh, K., A. Al-Shabibi, and T. Pervez. "Micromechanical Modeling of Two-Dimensional Periodic Cellular Materials." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-64190.

Full text
Abstract:
The mechanical behavior of 2-D periodic cellular materials is investigated using a continuum-based modeling approach. Two micromechanical models are developed on the basis of representative unit cell concept in which skeleton of cellular material is modeled as elastic beams. The ANSYS finite element code is used to solve the beam model of skeleton. Elastic moduli of square and triangular networks comprising the microstructure of the cellular material are calculated based on an equivalent continuum model. This is achieved by equating the stored energy in skeleton of a unit cell to the strain energy of the equivalent continuum under a set of prescribed boundary conditions. A proper displacement-controlled (essential) boundary condition generates a uniform strain field in both models which corresponds to calculation of one elastic modulus at a time. Then, effective Young’s modulus and Poisson’s ratio of continuum are extracted from the calculated elastic moduli. The dependence of effective elastic constants on relative density and thickness to length ratio of the microstructure is investigated. Furthermore, the in-plane behavior of cellular solids in compression is explored with the help of current modeling. The proposed models may contribute to optimal designs of a new class of materials with tailored geometry and material properties which could be useful in a broad range of structural applications.
APA, Harvard, Vancouver, ISO, and other styles
7

Pal, Siladitya, James Thunes, Pamela Moalli, Steven Abramowitch, and Spandan Maiti. "A Continuum Material Model for Urogynecogical Meshes." In ASME 2013 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/sbc2013-14717.

Full text
Abstract:
A wide variety of Synthetic polypropylene (PP) meshes are currently being used to restore pelvic organ support for women suffering from pelvic organ prolapse. These meshes are implanted in over 200,000 women annually. However, they are essentially modified abdominal hernia meshes; and, as such, their use in the field of urogynecology has undergone little oversight. With more patients experiencing morbidity, the FDA has released two Public Health Notifications in 2009 and 2011 informing the public about the potential complications associated with urogynecological mesh implantation.
APA, Harvard, Vancouver, ISO, and other styles
8

Schwalbert, Mateus Palharini, Ding Zhu, and A. Daniel Hill. "Extension of an Empirical Wormhole Model for Carbonate Matrix Acidizing Through Two-Scale Continuum 3D Simulations." In SPE Europec featured at 79th EAGE Conference and Exhibition. Society of Petroleum Engineers, 2017. http://dx.doi.org/10.2118/185788-ms.

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

Palharini Schwalbert, M., D. Zhu, and A. D. Hill. "Extension of an Empirical Wormhole Model for Carbonate Matrix Acidizing through Two-scale Continuum 3D Simulations." In 79th EAGE Conference and Exhibition 2017 - SPE EUROPEC. Netherlands: EAGE Publications BV, 2017. http://dx.doi.org/10.3997/2214-4609.201701607.

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

Oungoulian, Sevan R., Silvia S. Chen, Andrew Davol, Robert L. Sah, and Stephen M. Klisch. "Extended Two Compartmental Swelling Stress Model and Isotropic Cauchy Stress Equation for Articular Cartilage Proteoglycans." In ASME 2007 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2007. http://dx.doi.org/10.1115/sbc2007-175327.

Full text
Abstract:
Proteoglycans (PGs), a constituent of cartilaginous tissues, have a negative fixed charge (FC) that causes an intratissue swelling stress [1]. This swelling stress is thought to balance tensile stress in the collagen network and contribute to the aggregate modulus of articular cartilage (AC) [1]. Stress constitutive equations that accurately characterize mechanical behavior of individual tissue constituents are crucial for the development of accurate total tissue models. The goal of this study is to extend the range of an existing two compartmental model for PG swelling stress by Basser et al. [1], and develop a continuum level equation for PG Cauchy stress. Specifically, the first aim is to increase the accuracy of the two compartmental model proposed in [1], to a lower range of FC density (FCD) typically found in bovine calf AC. The second aim is to use the extended model to develop a continuum level strain energy function and associated isotropic PG Cauchy stress constitutive equation.
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Two continuum model"

1

Palazotto, A. N., and S. K. Naboulsi. An Overview of a Continuum Mechanic Approach to a Thermodynamic Model of Failure. Fort Belvoir, VA: Defense Technical Information Center, January 1998. http://dx.doi.org/10.21236/ada345637.

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

Doughty, Christine, and Kenzi Karasaki. Evaluation of uncertainties due to hydrogeological modeling and groundwater flow analysis: Effective continuum model using TOUGH2. Office of Scientific and Technical Information (OSTI), July 2001. http://dx.doi.org/10.2172/816059.

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

Hovorka, Susan. SECARB Continued Characterization to Collect & Incorporate Data into Models. Office of Scientific and Technical Information (OSTI), March 2014. http://dx.doi.org/10.2172/1819903.

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

Ghavamzadeh, Mohammad, Sridhar Mahadevan, and Rajbala Makar. Extending Hierarchical Reinforcement Learning to Continuous-Time, Average-Reward, and Multi-Agent Models. Fort Belvoir, VA: Defense Technical Information Center, July 2003. http://dx.doi.org/10.21236/ada445107.

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

Saltus, Christina, Todd Swannack, and S. McKay. Geospatial Suitability Indices Toolbox (GSI Toolbox). Engineer Research and Development Center (U.S.), September 2021. http://dx.doi.org/10.21079/11681/41881.

Full text
Abstract:
Habitat suitability models are widely adopted in ecosystem management and restoration, where these index models are used to assess environmental impacts and benefits based on the quantity and quality of a given habitat. Many spatially distributed ecological processes require application of suitability models within a geographic information system (GIS). Here, we present a geospatial toolbox for assessing habitat suitability. The Geospatial Suitability Indices (GSI) toolbox was developed in ArcGIS Pro 2.7 using the Python® 3.7 programming language and is available for use on the local desktop in the Windows 10 environment. Two main tools comprise the GSI toolbox. First, the Suitability Index Calculator tool uses thematic or continuous geospatial raster layers to calculate parameter suitability indices based on user-specified habitat relationships. Second, the Overall Suitability Index Calculator combines multiple parameter suitability indices into one overarching index using one or more options, including: arithmetic mean, weighted arithmetic mean, geometric mean, and minimum limiting factor. The resultant output is a raster layer representing habitat suitability values from 0.0 to 1.0, where zero is unsuitable habitat and one is ideal suitability. This report documents the model purpose and development as well as provides a user’s guide for the GSI toolbox.
APA, Harvard, Vancouver, ISO, and other styles
6

Francis J. Doyle III. Final Report ''Model-Based Approach to Soft-Sensing and Diagnosis for Control of a Continuous Digester''. Office of Scientific and Technical Information (OSTI), June 2003. http://dx.doi.org/10.2172/811743.

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

Overbeck, J. R., M. D. Hendricks, and N. E. M. Kinsman. Photogrammetric digital surface models and orthoimagery for the continuous coastline, Wales to Platinum, Alaska. Alaska Division of Geological & Geophysical Surveys, 2017. http://dx.doi.org/10.14509/29744.

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

Matar, Walid, and Rami Shabaneh. Can Oil Refiners Adjust to a Greater Supply of Shale Oil? King Abdullah Petroleum Studies and Research Center, January 2021. http://dx.doi.org/10.30573/ks--2020-dp27.

Full text
Abstract:
The advent of American shale oil and its prospects for continued production growth have raised concerns about whether oil refineries can handle the increasingly lighter crude oil supply. To provide a perspective on this issue, we run a global oil refining model for the years from 2017 to 2030. The model’s objective is to maximize refining industry profits in eight global regions, taking into account around 100 grades of crude oil.
APA, Harvard, Vancouver, ISO, and other styles
9

Arcidiacono, Peter, Patrick Bayer, Jason Blevins, and Paul Ellickson. Estimation of Dynamic Discrete Choice Models in Continuous Time with an Application to Retail Competition. Cambridge, MA: National Bureau of Economic Research, October 2012. http://dx.doi.org/10.3386/w18449.

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

Tsimpanogiannis, Ioannis N., and Yanis C. Yortsos. An Effective Continuum Model for the Liquid-to-Gas Phase Change in a Porous Medium Driven by Solute Diffusion: I. Constant Pressure Decline Rates. Office of Scientific and Technical Information (OSTI), August 2001. http://dx.doi.org/10.2172/784395.

Full text
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Two continuum model' for particular source types:
Journal articles Dissertations / Theses Books
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography