Relevant bibliographies by topics / Contraction a posteriori

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Academic literature on the topic 'Contraction a posteriori'

Author: Grafiati
Published: 5 October 2024
Last updated: 31 July 2025

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Journal articles on the topic "Contraction a posteriori"

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Bogle, Jamie M., David A. Zapala, Robin Criter, and Robert Burkard. "The Effect of Muscle Contraction Level on the Cervical Vestibular Evoked Myogenic Potential (cVEMP): Usefulness of Amplitude Normalization." Journal of the American Academy of Audiology 24, no. 02 (2013): 077–88. http://dx.doi.org/10.3766/jaaa.24.2.2.

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Background: The cervical vestibular evoked myogenic potential (cVEMP) is a reflexive change in sternocleidomastoid (SCM) muscle contraction activity thought to be mediated by a saccular vestibulo-collic reflex. CVEMP amplitude varies with the state of the afferent (vestibular) limb of the vestibulo-collic reflex pathway, as well as with the level of SCM muscle contraction. It follows that in order for cVEMP amplitude to reflect the status of the afferent portion of the reflex pathway, muscle contraction level must be controlled. Historically, this has been accomplished by volitionally controll
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ZLATANOV, BOYAN. "Error estimates for approximating best proximity points for cyclic contractive maps." Carpathian Journal of Mathematics 32, no. 2 (2016): 265–70. http://dx.doi.org/10.37193/cjm.2016.02.15.

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We find a priori and a posteriori error estimates of the best proximity point for the Picard iteration associated to a cyclic contraction map, which is defined on a uniformly convex Banach space with modulus of convexity of power type.
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Beirão da Veiga, L., C. Canuto, R. H. Nochetto, G. Vacca, and M. Verani. "Adaptive VEM: Stabilization-Free A Posteriori Error Analysis and Contraction Property." SIAM Journal on Numerical Analysis 61, no. 2 (2023): 457–94. http://dx.doi.org/10.1137/21m1458740.

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Canuto, Claudio, and Davide Fassino. "Higher-order adaptive virtual element methods with contraction properties." Mathematics in Engineering 5, no. 6 (2023): 1–33. http://dx.doi.org/10.3934/mine.2023101.

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<abstract><p>The realization of a standard Adaptive Finite Element Method (AFEM) preserves the mesh conformity by performing a completion step in the refinement loop: In addition to elements marked for refinement due to their contribution to the global error estimator, other elements are refined. In the new perspective opened by the introduction of Virtual Element Methods (VEM), elements with hanging nodes can be viewed as polygons with aligned edges, carrying virtual functions together with standard polynomial functions. The potential advantage is that all activated degrees of fre
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Bokhove, O., A. Kalogirou, and W. Zweers. "From Bore–Soliton–Splash to a New Wave-to-Wire Wave-Energy Model." Water Waves 1, no. 2 (2019): 217–58. http://dx.doi.org/10.1007/s42286-019-00022-9.

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AbstractWe explore extreme nonlinear water-wave amplification in a contraction or, analogously, wave amplification in crossing seas. The latter case can lead to extreme or rogue-wave formation at sea. First, amplification of a solitary-water-wave compound running into a contraction is disseminated experimentally in a wave tank. Maximum amplification in our bore–soliton–splash observed is circa tenfold. Subsequently, we summarise some nonlinear and numerical modelling approaches, validated for amplifying, contracting waves. These amplification phenomena observed have led us to develop a novel w
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Waldrop, T. G., and R. W. Stremel. "Muscular contraction stimulates posterior hypothalamic neurons." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 256, no. 2 (1989): R348—R356. http://dx.doi.org/10.1152/ajpregu.1989.256.2.r348.

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Recent studies have suggested that the subthalamic locomotor region (STLR) of the posterior hypothalamus is involved in modulating cardiorespiratory responses to feedback from contracting muscles. The purpose of this study was to determine whether neurons in this hypothalamic region alter their discharge frequency during contraction of hindlimb muscles. Stainless steel electrodes were used to record single-unit activity of STLR neurons during static and rhythmic contractions of hindlimb muscles in anesthetized cats. Recordings were also made from neurons in areas outside but surrounding the su
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Zlatanov, Boyan. "On a generalization of tripled fixed or best proximity points for a class of cyclic contractive maps." Filomat 35, no. 9 (2021): 3015–31. http://dx.doi.org/10.2298/fil2109015z.

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We enrich the known results about tripled fixed points and tripled best proximity points. We generalize the notion of ordered pairs of cyclic contraction maps and we obtain sufficient conditions for the existence and uniqueness of fixed (or best proximity) points. We get a priori and a posteriori error estimates for the tripled fixed points and for the tripled best proximity points, provided that the underlying Banach space has modulus of convexity of power type in the case of best proximity points, obtained by sequences of successive iterations. We illustrate the main result with an example.
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Khoromskij, Boris, and Sergey Repin. "Rank Structured Approximation Method for Quasi-Periodic Elliptic Problems." Computational Methods in Applied Mathematics 17, no. 3 (2017): 457–77. http://dx.doi.org/10.1515/cmam-2017-0014.

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AbstractWe consider an iteration method for solving an elliptic type boundary value problem {\mathcal{A}u=f}, where a positive definite operator {\mathcal{A}} is generated by a quasi-periodic structure with rapidly changing coefficients (a typical period is characterized by a small parameter ϵ). The method is based on using a simpler operator {\mathcal{A}_{0}} (inversion of {\mathcal{A}_{0}} is much simpler than inversion of {\mathcal{A}}), which can be viewed as a preconditioner for {\mathcal{A}}. We prove contraction of the iteration method and establish explicit estimates of the contraction
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CASCON, J. MANUEL, RICARDO H. NOCHETTO, and KUNIBERT G. SIEBERT. "DESIGN AND CONVERGENCE OF AFEM IN H(DIV)." Mathematical Models and Methods in Applied Sciences 17, no. 11 (2007): 1849–81. http://dx.doi.org/10.1142/s0218202507002492.

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We design an adaptive finite element method (AFEM) for mixed boundary value problems associated with the differential operator A-∇div in H(div, Ω). For A being a variable coefficient matrix with possible jump discontinuities, we provide a complete a posteriori error analysis which applies to both Raviart–Thomas ℝ𝕋n and Brezzi–Douglas–Marini 𝔹𝔻𝕄n elements of any order n in dimensions d = 2, 3. We prove a strict reduction of the total error between consecutive iterates, namely a contraction property for the sum of energy error and oscillation, the latter being solution-dependent. We present nume
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Haberl, Alexander, Dirk Praetorius, Stefan Schimanko, and Martin Vohralík. "Convergence and quasi-optimal cost of adaptive algorithms for nonlinear operators including iterative linearization and algebraic solver." Numerische Mathematik 147, no. 3 (2021): 679–725. http://dx.doi.org/10.1007/s00211-021-01176-w.

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AbstractWe consider a second-order elliptic boundary value problem with strongly monotone and Lipschitz-continuous nonlinearity. We design and study its adaptive numerical approximation interconnecting a finite element discretization, the Banach–Picard linearization, and a contractive linear algebraic solver. In particular, we identify stopping criteria for the algebraic solver that on the one hand do not request an overly tight tolerance but on the other hand are sufficient for the inexact (perturbed) Banach–Picard linearization to remain contractive. Similarly, we identify suitable stopping
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Dissertations / Theses on the topic "Contraction a posteriori"

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Naveau, Marion. "Procédures de sélection de variables en grande dimension dans les modèles non-linéaires à effets mixtes. Application en amélioration des plantes." Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASM031.

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Les modèles à effets mixtes analysent des observations collectées de façon répétée sur plusieurs individus, attribuant la variabilité à différentes sources (intra-individuelle, inter-individuelle, résiduelle). Prendre en compte cette variabilité est essentiel pour caractériser sans biais les mécanismes biologiques sous-jacents. Ces modèles utilisent des covariables et des effets aléatoires pour décrire la variabilité entre individus : les covariables décrivent les différences dues à des caractéristiques observées, tandis que les effets aléatoires représentent la variabilité non attribuable aux
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THOMAS, VINEET SUNNY. "A Multiscale Framework to Analyze Tricuspid Valve Biomechanics." University of Akron / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=akron1542255754172363.

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Schneider, Laura Fee. "Discrete Parameter Estimation for Rare Events: From Binomial to Extreme Value Distributions." Thesis, 2019. http://hdl.handle.net/21.11130/00-1735-0000-0003-C131-B.

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Books on the topic "Contraction a posteriori"

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The reliability of an isokinetic measurement protocol for the posterior rotator cuff musculature. 1990.

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Montgomery, Erwin B. Approach to DBS in the Vicinity of the Globus Pallidus Interna. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780190259600.003.0012.

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The regional anatomy around the DBS lead in the globus pallidus interna (GPi) determines efficacy and adverse effects. Understanding the regional anatomy allows the programmer to adjust the stimulation to provide optimal benefit and the absence of adverse effects. Just ventral to the sensorimotor region of the GPi is the optic tract. Spread of stimulation to the optic tract can produce phosphenes (the experience of seeing light without light actually entering the eye). The internal capsule lies just posterior to the globus pallidus, and stimulation there can cause tonic muscle contractions. An
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Montgomery, Erwin B. Approach to DBS in the Vicinity of the Ventral Intermediate Nucleus of the Thalamus DBS. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780190259600.003.0013.

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The regional anatomy around the DBS lead in the ventral intermediate nucleus of the thalamus (Vim) determines efficacy and adverse effects. Understanding the regional anatomy allows the programmer to adjust the stimulation to provide optimal benefit and the absence of adverse effects. Vim is the target of therapeutic DBS. The ventrocaudal nucleus of the thalamus (Vc) lies posterior to the Vim. Electrical stimulation of Vc can cause treatment-limiting paresthesias. The corticospinal and cortical bulbar tracts in the internal capsule lie lateral and ventral to the Vim. Electrical stimulation of
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Book chapters on the topic "Contraction a posteriori"

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Spandau, Ulrich, and Sang Jin Kim. "Posterior Hyaloid Contraction Syndrome." In Pediatric Retinal Vascular Diseases. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-13701-4_23.

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Hayashi, Ken. "Effect of Posterior Capsule Opacification and Anterior Capsule Contraction on Visual Function." In Lens Epithelium and Posterior Capsular Opacification. Springer Japan, 2014. http://dx.doi.org/10.1007/978-4-431-54300-8_13.

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Agapiou, Sergios, and Peter Mathé. "Posterior Contraction in Bayesian Inverse Problems Under Gaussian Priors." In Trends in Mathematics. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-70824-9_1.

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Batu, Ozlem. "Oxytocin." In Brain Biochemistry and Its Disease. Nobel Tip Kitabevleri, 2024. http://dx.doi.org/10.69860/nobel.9786053359371.2.

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Oxytocin is a peptide hormone secreted from the posterior pituitary. Its best-known function is to increase milk secretion in breastfeeding women. It can be used pharmacologically to induce uterine contractions and sustain labour. However, it is thought that its contribution to birth is minimal at physiologically normal blood levels. This hormone, which acts as a neurotransmitter in the central nervous system, is also effective in regulating blood circulation. It balances the mood and is important in regulating behaviour in different emotional states. It helps to experience positive emotions.
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Karavitaki, Niki, Shahzada K. Ahmed, and John A. H. Wass. "Disorders of the posterior pituitary gland." In Oxford Textbook of Medicine, edited by Mark Gurnell. Oxford University Press, 2020. http://dx.doi.org/10.1093/med/9780198746690.003.0245.

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The posterior pituitary produces arginine vasopressin, which has a key role in fluid homeostasis, and oxytocin, which stimulates uterine contraction during birth and ejection of milk during lactation. Cranial diabetes insipidus is the passage of large volumes of dilute urine due to vasopressin deficient synthesis and/or release. The most common cause is lesions of the neurohypophysis or the hypothalamic median eminence damaging the magnocellular neurons. MRI of the neurohypophysis is required to delineate the cause. Mild polyuria can be managed simply by ensuring adequate fluid intake; treatme
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Pal, Aparna, Niki Karavitaki, and John A. H. Wass. "Disorders of the posterior pituitary gland." In Oxford Textbook of Medicine. Oxford University Press, 2010. http://dx.doi.org/10.1093/med/9780199204854.003.1303.

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The posterior pituitary produces arginine vasopressin, which has a key role in fluid homeostasis, and oxytocin, which stimulates uterine contraction during birth and ejection of milk during lactation. Cranial diabetes insipidus is the passage of large volumes (>3 litres/24 h) of dilute urine (osmolality<300 mOsm/kg) due to vasopressin deficiency, and most commonly occurs as a consequence of trauma or tumour affecting the posterior pituitary. Diagnosed by a water deprivation test revealing urine osmolality less than 300 mOsml/kg with concurrent plasma osmolality more than 290 mOsml/kg aft
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Srivinas, Srividya. "Employing Specific Immediate Complete Anterior Guidance Development (ICAGD) Occlusal Adjustment Protocols to Achieve Short Disclusion Time." In Advances in Medical Technologies and Clinical Practice. IGI Global, 2024. https://doi.org/10.4018/978-1-6684-9313-7.ch011.

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Disclusion Time Reduction (DTR) performed with the Immediate Complete Anterior Guidance Development (ICAGD) coronoplasty, is a well-established computer guided occlusal adjustment treatment protocol for treating the occluso-muscle subset of Temporomandibular Disorders (TMD). ICAGD aims to reduce prolonged duration (time in seconds) occlusal surface friction that occurs between opposing posterior teeth during mandibular excursions when patients normally chew, and when they parafunction. Long duration posterior friction initiates prolonged posterior tooth periodontal ligament fiber compressions
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Perry, Steven F., Markus Lambertz, and Anke Schmitz. "Control of breathing in craniotes." In Respiratory Biology of Animals. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780199238460.003.0013.

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Craniote gills are arranged sequentially along the pharynx and accordingly are ventilated from anterior to posterior by a wave of muscle contraction, beginning with the mouth. Each gill pair appears to have its own set of neurons in the brainstem that coordinate the muscle activity and stimulate the next gill pair in the sequence. This system appears to have been maintained from hagfish to teleosts. In tetrapods, on the other hand, various centres in the brainstem coordinate different phases of breathing: expiration, inspiration, and post-inspiration. The location of these centres in the brain
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Gorgas, Diane L. "Just Another Case of Gastro." In Psychiatric Emergencies. Oxford University Press, 2022. http://dx.doi.org/10.1093/med/9780197544464.003.0019.

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The presentation of bulimia nervosa in the emergency department is challenging, with attempts at direct history gathering frequently foiled by a patient’s sense of secrecy surrounding the disorder. Clues for presentation include profound hypokalemia, especially associated with volume-contraction alkalosis. Physical examination findings that may be seen include dentin decay and other oral pathology such as posterior oropharyngeal trauma; Russell’s lesions on the dorsum of the hand; and associated evidence of self-injurious behavior (habitual cutting) given the association with borderline person
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Atkinson, Martin E. "The gastrointestinal system." In Anatomy for Dental Students. Oxford University Press, 2013. http://dx.doi.org/10.1093/oso/9780199234462.003.0012.

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The mouth and pharynx are the first parts of the digestive system; they are the principal areas of the gastrointestinal system of interest to dental students and practitioners and are fully described in Chapters 25 and 28. The anatomy of the remainder of the system is described briefly to provide a working knowledge for applications in other aspects of undergraduate dental courses such as nutrition. In essence, the digestive tract is a long convoluted tube illustrated in Figure 6.1. It extends from the mouth, via the pharynx, oesophagus, stomach, small intestine, and large intestine to the ana
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Conference papers on the topic "Contraction a posteriori"

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Yang, Hongzhi, Yi-Chun Li, and Mohamed Samir Hefzy. "Isometric Co-Contractions of the Quadriceps and Hamstrings in Intact and PCL-Deficient Knees." In ASME 1999 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/imece1999-0445.

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Abstract The exercises to strengthen the muscles around the knee are designed to improve its stability. During these exercises, co-contraction of the hamstrings occur depending on the level of quadriceps contraction. The purpose of this study is to develop a three-dimensional knee model that includes tibia, femur and patella and allows to predict knee response due to quadriceps and hamstrings co-contractions. As an application, results quantifying the changes in knee response are obtained following a simulated posterior cruciate ligament (PCL) injury. This is motivated by the continuing debate
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Shelburne, Kevin B., and Marcus G. Pandy. "Ligament Forces During Isometric Contractions in the Intact and ACL-Deficient Knee." In ASME 1996 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/imece1996-0425.

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Abstract A model of the knee in the sagittal plane was used to study the forces induced in the ligaments during maximum contractions of the quadriceps muscles. The geometry of the distal femur was obtained from cadaver data. The tibial plateau and patellar facet were modeled as flat surfaces. Eleven elastic elements were used to describe the mechanical behavior of the anterior and posterior cruciate ligaments (ACL and PCL), the medial and lateral collateral ligaments (MCL and LCL), and the posterior capsule. The model knee was actuated by eleven musculotendinous units, each unit represented as
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Andriacchi, Thomas P., M. Kent Toney, Chris Dyrby, and Arthur Conley. "The Influence of Muscle Contraction on the Kinematics of the Knee Joint." In ASME 1996 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/imece1996-1326.

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Abstract There is a paucity of information on the interaction between muscle contraction and the kinematics of the knee. In particular, the anterior-posterior (AP) movement of the femur on the tibia has been described primarily from passive testing (2). The dynamic action of the extensor and flexor muscle groups at the knee can have a substantial influence on the AP movement of the femur on the tibia. This dynamic information is important for understanding a number of issues related to ligament reconstruction as well as the designs of total knee replacement. However, most knowledge of six degr
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Wang, Aosi, and Rong Liu. "Dynamic Analysis of Skin Deformation for Ergonomic Design of Compression Leggings." In 16th International Conference on Applied Human Factors and Ergonomics (AHFE 2025). AHFE International, 2025. https://doi.org/10.54941/ahfe1006168.

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This study investigates the dynamic deformation of human skin during running using a 4D scanning system, capturing detailed spatiotemporal changes across five critical gait phases: initial contact, mid-stance, toe-off, mid-swing, and late swing. Six participants were analysed to track and quantify skin deformation (displacement). Results reveal the posture-dependent variations in skin deformation in running. The anterior knee and posterior hip regions consistently exhibited skin elongation, whereas the posterior knee and anterior hip regions showed skin contraction. Transitional boundary lines
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Yu, Xianwen, Xiaoning Zhang, Yang Cao, and Min Xia. "VAEGAN: A Collaborative Filtering Framework based on Adversarial Variational Autoencoders." In Twenty-Eighth International Joint Conference on Artificial Intelligence {IJCAI-19}. International Joint Conferences on Artificial Intelligence Organization, 2019. http://dx.doi.org/10.24963/ijcai.2019/584.

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Recently, Variational Autoencoders (VAEs) have been successfully applied to collaborative filtering for implicit feedback. However, the performance of the resulting model depends a lot on the expressiveness of the inference model and the latent representation is often too constrained to be expressive enough to capture the true posterior distribution. In this paper, a novel framework named VAEGAN is proposed to address the above issue. In VAEGAN, we first introduce Adversarial Variational Bayes (AVB) to train Variational Autoencoders with arbitrarily expressive inference model. By utilizing Gen
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Bellet Sanfeliu, Carme. "Nuevas tecnologias de transporte y metropolitanización discontiua del territorio: el tren de alta velocidad en Segovia." In International Conference Virtual City and Territory. Centre de Política de Sòl i Valoracions, 2009. http://dx.doi.org/10.5821/ctv.7521.

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El tren de alta velocidad (TAV) nació con la vocación de establecer relaciones entre grandes núcleos urbanos distantes entre sí, pero su posterior implantación, las características de los servicios y el uso de la infraestructura han originado nuevas vocaciones. Así hoy el TAV desarrolla otras nuevas funciones territoriales: la articulación de ciudades medias y grandes en una región (función regional) y la articulación de entornos metropolitanos discontinuos en el entorno de una hora de la metrópoli central que acaban vinculándose a ésta (función metropolitana).
 La función metropolitana,
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