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Relevant bibliographies by topics / Sign problem

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Academic literature on the topic 'Sign problem'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 April 2022

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Journal articles on the topic "Sign problem"

1

Kieu, T. D., and C. J. Griffin. "TACKLING THE SIGN PROBLEM." International Journal of Modern Physics C 05, no. 02 (1994): 275–77. http://dx.doi.org/10.1142/s0129183194000313.

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To tackle the sign problem in the simulations of systems having indefinite or complex-valued measures, we propose a new approach which yields statistical errors smaller than the crude Monte Carlo using absolute values of the original measures. The 1D complex-coupling Ising model is employed as an illustration.

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Gómez, Bernardo. "<p>El análisis de manuales y la identificación de problemas de investigación en Didáctica de las Matemáticas</p>." PNA. Revista de Investigación en Didáctica de la Matemática 5, no. 2 (2011): 49–65. http://dx.doi.org/10.30827/pna.v5i2.6157.

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La ambigüedad del signo radical es un problema con raíces históricas que ha quedado recogido en una tradición de enseñanza reflejada en los manuales escolares. Como problema matemático ha sido resuelto, pero no como problema didáctico, ya que el signo radical presenta sutilezas conceptuales y operatorias cuya omisión en los manuales es a menudo causa de malentendidos y conflictos fuertemente arraigados. Algunos de esos malentendidos son un producto de la enseñanza tradicional reflejada en los manuales que ignora los desarrollos matemáticos actuales. En este artículo se utiliza el análisis text

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Vershyna, V. A., and O. V. Mykhailiuk. "Laughter as a Semiotic Problem." Anthropological Measurements of Philosophical Research, no. 20 (December 28, 2021): 5–15. http://dx.doi.org/10.15802/ampr.v0i20.248949.

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Purpose. The article is aimed to substantiate the view on the phenomenon of laughter as a subject of semiotic analysis, which leads to the following tasks: to reveal the possibilities of semiotics application in the study of laughter nature; to analyze the phenomenon of laughter as a cultural and natural phenomenon, as a sign and as an attribute; to consider the place of laughter in culture, which is understood as a sign system. Theoretical basis. The semiotic approach proceeds from the fact that human lives in the world of signs, all the surrounding reality can be interpreted as a sign system

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Singh, B. "A problem with the Mallampati sign." Anaesthesia 48, no. 9 (1993): 832–33. http://dx.doi.org/10.1111/j.1365-2044.1993.tb07627.x.

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Hangleiter, Dominik, Ingo Roth, Daniel Nagaj, and Jens Eisert. "Easing the Monte Carlo sign problem." Science Advances 6, no. 33 (2020): eabb8341. http://dx.doi.org/10.1126/sciadv.abb8341.

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Quantum Monte Carlo (QMC) methods are the gold standard for studying equilibrium properties of quantum many-body systems. However, in many interesting situations, QMC methods are faced with a sign problem, causing the severe limitation of an exponential increase in the runtime of the QMC algorithm. In this work, we develop a systematic, generally applicable, and practically feasible methodology for easing the sign problem by efficiently computable basis changes and use it to rigorously assess the sign problem. Our framework introduces measures of non-stoquasticity that—as we demonstrate analyt

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SAMSON, J. H. "AUXILIARY FIELDS AND THE SIGN PROBLEM." International Journal of Modern Physics C 06, no. 03 (1995): 427–65. http://dx.doi.org/10.1142/s0129183195000290.

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The auxiliary-field quantum Monte Carlo method is reviewed. The Hubbard-Stratonovich transformation converts an interacting Hamiltonian into a non-interacting Hamiltonian in a time-dependent stochastic field, allowing calculation of the resulting functional integral by Monte Carlo methods. The method is presented in a sufficiently general form to be applicable to any Hamiltonian with one- and two-body terms, with special reference to the Heisenberg model and one- and many-band Hubbard models. Many physical correlation functions can be related to correlation functions of the auxiliary field; ge

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Sevast'yanov, E. A. "Haar problem for sign-sensitive approximations." Sbornik: Mathematics 188, no. 2 (1997): 265–97. http://dx.doi.org/10.1070/sm1997v188n02abeh000203.

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Farajzadeh, Ali, Somaye Jafari та Chin-Tzong Pang. "Onη-Upper Sign Property and Upper Sign Continuity and Their Applications in Equilibrium-Like Problems". Abstract and Applied Analysis 2014 (2014): 1–6. http://dx.doi.org/10.1155/2014/207502.

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We first introduce the notion ofη-upper sign property which is an extension of the upper sign property introduced in Castellani and Giuli, 2013, by relaxing convexity on the set. Afterwards, we establish a link between the solution sets of local dual equilibrium problem (Minty local equilibrium problem) and equilibrium problem for mappings whose domains are not necessarily convex by relaxing the upper sign continuity on the map, as it is assumed in the literature (Bianchi and Pini, 2005; Castellani and Giuli, 2013; Farajzadeh and Zafarani, 2010). Accordingly, it allows us to extend and obtain

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Ohnishi, Akira, Yuto Mori, and Kouji Kashiwa. "Path optimization method for the sign problem." EPJ Web of Conferences 175 (2018): 07043. http://dx.doi.org/10.1051/epjconf/201817507043.

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We propose a path optimization method (POM) to evade the sign problem in the Monte-Carlo calculations for complex actions. Among many approaches to the sign problem, the Lefschetz-thimble path-integral method and the complex Langevin method are promising and extensively discussed. In these methods, real field variables are complexified and the integration manifold is determined by the flow equations or stochastically sampled. When we have singular points of the action or multiple critical points near the original integral surface, however, we have a risk to encounter the residual and global si

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Hanada, Masanori, Yoshinori Mastuo, and Naoki Yamamoto. "String inspired solution to the sign problem and overlapping problem." Journal of Physics: Conference Series 432 (April 30, 2013): 012008. http://dx.doi.org/10.1088/1742-6596/432/1/012008.

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Dissertations / Theses on the topic "Sign problem"

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Ucci, Allison. "American Sign Language : an influence on graphic design problem-solving /." Online version of thesis, 2008. http://hdl.handle.net/1850/6274.

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James, Frank. "Complex Langevin dynamics as a cure for the sign problem." Thesis, Swansea University, 2012. https://cronfa.swan.ac.uk/Record/cronfa42679.

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Theories with a chemical potential are difficult to treat numerically because the action is complex and therefore methods based on a probability interpretation of the weight break down. This is an issue known as the sign problem. Complex Langevin dynamics was first proposed in the early 1980s and does not rely in a probability interpretation of the weight, so it can in principle l)e applied even where there is a severe sign problem. However, the combined problems of numerical instabilities and incorrect convergence impeded such early studies. In this work, the problem of runaway trajectories i

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Neuberger, John M. (John Michael). "Existence of a Sign-Changing Solution to a Superlinear Dirichlet Problem." Thesis, University of North Texas, 1995. https://digital.library.unt.edu/ark:/67531/metadc278179/.

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We study the existence, multiplicity, and nodal structure of solutions to a superlinear elliptic boundary value problem. Under specific hypotheses on the superlinearity, we show that there exist at least three nontrivial solutions. A pair of solutions are of one sign (positive and negative respectively), and the third solution changes sign exactly once. Our technique is variational, i.e., we study the critical points of the associated action functional to find solutions. First, we define a codimension 1 submanifold of a Sobolev space . This submanifold contains all weak solutions to our proble

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Hassanpour, Mehran. "Sufficient Conditions for Uniqueness of Positive Solutions and Non Existence of Sign Changing Solutions for Elliptic Dirichlet Problems." Thesis, University of North Texas, 1995. https://digital.library.unt.edu/ark:/67531/metadc279227/.

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In this paper we study the uniqueness of positive solutions as well as the non existence of sign changing solutions for Dirichlet problems of the form $$\eqalign{\Delta u + g(\lambda,\ u) &= 0\quad\rm in\ \Omega,\cr u &= 0\quad\rm on\ \partial\Omega,}$$where $\Delta$ is the Laplace operator, $\Omega$ is a region in $\IR\sp{N}$, and $\lambda>0$ is a real parameter. For the particular function $g(\lambda,\ u)=\vert u\vert\sp{p}u+\lambda$, where $p={4\over N-2}$, and $\Omega$ is the unit ball in $\IR\sp{N}$ for $N\ge3$, we show that there are no sign changing solutions for small $\lambda$ and als

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Mori, Yuto. "Path optimization with neural network for sign problem in quantum field theories." Doctoral thesis, Kyoto University, 2021. http://hdl.handle.net/2433/263466.

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Dumas, Warwick Michael. "On conditional Wiener integrals and a novel approach to the fermion sign problem." Thesis, University of Leicester, 2010. http://hdl.handle.net/2381/8330.

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The path-integral formulation of nonrelativistic quantum mechanics was introduced by Feynman in 1948. The use of Path Integral Monte Carlo can be put on a rigorous footing using conditional Wiener integrals. This thesis addresses the topics both of numerical error and of Monte Carlo error. A piecewise constant numerical method which is of second order of accuracy for computing conditional Wiener integrals for a rather general class of sufficiently smooth functional is proposed. The method is based on simulation of Brownian bridges via the corresponding stochastic differential equations (SDEs)

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Román, Parra Carlos Patricio. "Large conformal metrics with prescribed sign-changing Gauss curvature and a critical Neumann problem." Tesis, Universidad de Chile, 2014. http://www.repositorio.uchile.cl/handle/2250/116845.

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Ingeniero Civil Matemático<br>En esta memoria se estudian dos problemas semilineales elípticos clásicos en la literatura: el problema de la curvatura Gaussiana prescrita en dimensión 2, y el problema de Lin-Ni-Takagi con exponente crítico en dimensión 3. En ambos se encuentran soluciones con reviente cuando el valor de un parámetro involucrado se aproxima a cierto valor crítico. En el primer capítulo se estudia el siguiente problema: Dada una función escalar $\kappa(x)$, suficientemente regular, definida en una variedad Riemanniana compacta $(M,g)$ de dimensión 2, se desea saber si $\kappa$

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Beckert, Janis. "A numerical study of the sign problem in the Hubbard model using a modified discrete Hubbard-Stratonovich transformation." Thesis, KTH, Teoretisk fysik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-143790.

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Jerry, Nybäck. "What is Good Design? : On the problem of stereotypes and innovation in character design as reflected through the mentor archetype." Thesis, Högskolan på Gotland, Institutionen för speldesign, teknik och lärande, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:hgo:diva-1952.

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This thesis aims to analyze the conventions of Character Design, and how one may innovate without losing visual communication. Focus is put on discussing stereotypical patterns as an inescapable but potentially harmful aspect of human behavior. The type of character being examined is the Mentor Archetype, as known in the Hero’s Journey, but also used throughout narrative in all its forms. A number of mentor characters from film, animation and video games are examined in order discern what common elements there are to the various depictions of mentors found throughout both historic and popular

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Umeda, Naoya. "Critical behavior of the matrix models generating 3D random volumes." Kyoto University, 2018. http://hdl.handle.net/2433/232234.

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Books on the topic "Sign problem"

1

1954-, Lawlor Leonard, ed. Voice and phenomenon: Introduction to the problem of the sign in Husserl's phenomenology. Northwestern University Press, 2011.

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Astrologers, American Federation of, ed. The rising sign problem: A series of essays on the physicial characteristics and personality traits of individuals for the twelve astrological signs on the ascendant. American Federation of Astrologers, 1991.

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Mary of Nazareth, sign and instrument of Christian unity: A biblical exposition of Mary and her relation to the problem of Christian unity. Queenship Pub. Co., 1998.

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American Sign Language demystified. McGraw-Hill, 2010.

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Sign of the Raven. Atheneum Books for Young Readers, 2005.

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Mindess, Anna. Reading between the signs workbook: A cultural guide for sign language students and interpreters. Intercultural, 2004.

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Levit︠s︡kiĭ, I︠U︡ A. Problemy lingvisticheskoĭ semantiki: Monografii︠a︡. Permskiĭ gos. universitet, 2008.

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Levit︠s︡kiĭ, I︠U︡ A. Problemy lingvisticheskoĭ semantiki: Monografii︠a︡. Permskiĭ gos. universitet, 2008.

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9

Ferris, Jean. Signs of life. Farrar, Straus and Giroux, 1994.

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Signs of life. Farrar, Straus and Giroux, 1995.

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Book chapters on the topic "Sign problem"

1

Hartung, Tobias, Karl Jansen, Hernan Leövey, and Julia Volmer. "Avoiding the Sign Problem in Lattice Field Theory." In Springer Proceedings in Mathematics & Statistics. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-43465-6_11.

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Oja, Hannu. "One-sample problem: Spatial sign test and spatial median." In Multivariate Nonparametric Methods with R. Springer New York, 2010. http://dx.doi.org/10.1007/978-1-4419-0468-3_6.

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Chu, Mingyuan, and Sotaro Kita. "The Role of Spontaneous Gestures in Spatial Problem Solving." In Gesture and Sign Language in Human-Computer Interaction and Embodied Communication. Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-34182-3_6.

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Nedjalkov, Mihail, Hans Kosina, and Siegfried Selberherr. "A Weight Decomposition Approach to the Sign Problem in Wigner Transport Simulations." In Large-Scale Scientific Computing. Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-540-24588-9_19.

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Kronenberger, Jan, and Anselm Haselhoff. "Do Capsule Networks Solve the Problem of Rotation Invariance for Traffic Sign Classification?" In Artificial Neural Networks and Machine Learning – ICANN 2018. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-01424-7_4.

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Matuttis, H. G., and N. Ito. "Advances in the Investigation of the Minus Sign Problem for the Fermionic Case." In Springer Proceedings in Physics. Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/978-3-642-59406-9_25.

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Grimson, Rafael. "An Efficient Algorithm for the Sign Condition Problem in the Semi-algebraic Context." In Advances in Geometric Modeling and Processing. Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-13411-1_5.

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Gimadi, Edward, and Sergey Sevastianov. "On Solvability of the Project Scheduling Problem with Accumulative Resources of an Arbitrary Sign." In Operations Research Proceedings 2002. Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-642-55537-4_39.

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Liu, Fang, Min Huang, Teng Zhang, and Feng Mao. "A Guide Sign Optimization Problem for an Added Road Based on Bird Mating Optimizer." In Lecture Notes in Computer Science. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-61824-1_10.

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Iacopetti, Alessandro, and Filomena Pacella. "Asymptotic analysis for radial sign-changing solutions of the Brezis-Nirenberg problem in low dimensions." In Contributions to Nonlinear Elliptic Equations and Systems. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-19902-3_20.

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Conference papers on the topic "Sign problem"

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Storni, Cristiano. "The problem of de-sign as conjuring." In the 13th Participatory Design Conference. ACM Press, 2014. http://dx.doi.org/10.1145/2661435.2661436.

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Scorzato, Luigi. "The Lefschetz thimble and the sign problem." In The 33rd International Symposium on Lattice Field Theory. Sissa Medialab, 2016. http://dx.doi.org/10.22323/1.251.0016.

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Ogilvie, Michael, and Peter N. Meisinger. "The sign problem and Abelian lattice duality." In 31st International Symposium on Lattice Field Theory LATTICE 2013. Sissa Medialab, 2014. http://dx.doi.org/10.22323/1.187.0205.

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DuBois, Jonathan L., Ethan W. Brown, and Berni J. Alder. "Overcoming the Fermion Sign Problem in Homogeneous Systems." In Symposium in Honor of Dr Berni Alder's 90th Birthday. WORLD SCIENTIFIC, 2017. http://dx.doi.org/10.1142/9789813209428_0013.

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Pinto, Rafael C., Paulo M. Engel, and Milton R. Heinen. "One-shot learning in the road sign problem." In 2012 International Joint Conference on Neural Networks (IJCNN 2012 - Brisbane). IEEE, 2012. http://dx.doi.org/10.1109/ijcnn.2012.6252697.

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Suzuki, Asobu, Ryutaro Fukuda, Atsushi Nakamura, Shotaro Oka, and Yusuke Taniguchi. "Study of the sign problem in canonical approach." In 34th annual International Symposium on Lattice Field Theory. Sissa Medialab, 2017. http://dx.doi.org/10.22323/1.256.0060.

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Bloch, Jacques. "Evading the sign problem in random matrix simulations." In XXIX International Symposium on Lattice Field Theory. Sissa Medialab, 2012. http://dx.doi.org/10.22323/1.139.0184.

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Bloch, Jacques, Falk Bruckmann, and Tilo Wettig. "Sign problem and subsets in one-dimensional QCD." In 31st International Symposium on Lattice Field Theory LATTICE 2013. Sissa Medialab, 2014. http://dx.doi.org/10.22323/1.187.0194.

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Aarts, Gert. "Can complex Langevin dynamics evade the sign problem?" In The XXVII International Symposium on Lattice Field Theory. Sissa Medialab, 2010. http://dx.doi.org/10.22323/1.091.0024.

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Lombardo, Maria-Paola, Kim Splittorff, and Jacobus Verbaarschot. "Fluctuations, correlations and the sign problem in QCD." In The XXVII International Symposium on Lattice Field Theory. Sissa Medialab, 2010. http://dx.doi.org/10.22323/1.091.0171.

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Reports on the topic "Sign problem"

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Kawano, Toshihiko. Sign problem in Z-coefficient for particle emission angular distributions. Office of Scientific and Technical Information (OSTI), 2015. http://dx.doi.org/10.2172/1169139.

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Gubernatis, James E. Sign and Phase Problems: Monte Carlo for the Unsampleable. Office of Scientific and Technical Information (OSTI), 2012. http://dx.doi.org/10.2172/1052792.

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Brennan, Sean M. Analysis of X-Ray Diffraction as a Probe of Interdiffusion in Si/SiGe Heterostructures. Office of Scientific and Technical Information (OSTI), 2003. http://dx.doi.org/10.2172/815275.

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Perdigão, Rui A. P. Earth System Dynamic Intelligence with Quantum Technologies: Seeing the “Invisible”, Predicting the “Unpredictable” in a Critically Changing World. Meteoceanics, 2021. http://dx.doi.org/10.46337/211028.

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We hereby embark on a frontier journey articulating two of our flagship programs – “Earth System Dynamic Intelligence” and “Quantum Information Technologies in the Earth Sciences” – to take the pulse of our planet and discern its manifold complexity in a critically changing world. Going beyond the traditional stochastic-dynamic, information-theoretic, artificial intelligence, mechanistic and hybrid approaches to information and complexity, the underlying fundamental science ignites disruptive developments empowering complex problem solving across frontier natural, social and technical geoscien

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Toro, Daniela. Infodemia. Universidad Autónoma de Chile, 2020. http://dx.doi.org/10.32457/20.500.12728/9593202031.

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Más preocupante que el coronavirus es la difusión de información sin validez científica. Las fake news que han aparecido en redes sociales se están convirtiendo en un verdadero problema, tan o más grande que la enfermedad. Incluso la OMS tuvo que organizar una conferencia de prensa con el único propósito de frenar lo que llamó una “peligrosa epidemia de información falsa”. “Infodemia” es el término con el que la definió.

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Pastorino, Javier, Nicole Kimelman, and Ana Castillo. Las industrias creativas como agentes de innovación en Uruguay: descubrí el poder del vínculo. Inter-American Development Bank, 2021. http://dx.doi.org/10.18235/0003836.

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En los últimos años las industrias creativas han ganado reconocimiento como sector productivo relevante a nivel mundial. Sin embargo, a pesar de que su potencial de desarrollo para la economía de Uruguay era significativo, las pequeñas y medianas empresas (pymes) de dicha industria no encontraban canales que les permitan innovar y desarrollar nuevos productos y modelos de negocio, en colaboración con otros sectores de la economía, en particular los de alta intensidad tecnológica. Por otro lado, también las pymes de sectores tradicionales, e incluso las tecnológicas, detectaban problemas en inc

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Bejarano-Salcedo, Valeria, William Iván Moreno-Jimenez, and Juan Manuel Julio-Román. La Magnitud y Duración del Efecto de la Intervención por Subastas sobre el Mercado Cambiario: El caso Colombiano. Banco de la República de Colombia, 2020. http://dx.doi.org/10.32468/be.1142.

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En esta nota hacemos explícitos los problemas más importantes que confrontan los estudios de efectividad y de estimación del efecto de intervenciones esterilizadas, especialmente aquellas que tiene un objetivo implícito sobre el nivel de la tasa de cambio. Estos problemas se solucionan, por lo menos en gran parte, con la utilización de modelos basados en la microestructura del mercado cambiario sobre información de alta frecuencia. Empleando uno de estos estudiamos el efecto de la intervenciones esterilizadas a través de subastas de opciones, en especial las de compra directa, realizadas por e

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Bonilla Santos, Jasmín, and Erika Yisseth Zea Romero. Guía para el acompañamiento a niños y niñas víctimas de la violencia escolar. Ediciones Universidad Cooperativa de Colombia, 2021. http://dx.doi.org/10.16925/gcgp.40.

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El propósito de esta guía es abordar una temática considerada como un problema en el ámbito mundial en los diferentes contextos educativos, como lo es la violencia escolar, definida como cualquier tipo de violencia que se da en contextos escolares y puede ir dirigida hacia alumnos, profesores o propiedades. Sin embargo, es importante destacar que esta guía se centrará específicamente en un tipo de violencia que afecta la salud mental de niños y adolescentes: el acoso escolar, considerada como cualquier forma de maltrato físico, psicológico y verbal producido entre estudiantes de manera reitera

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Barrera Sánchez, María Angélica. El emprendimiento en el marco de la gobernanza. Universidad Nacional Abierta y a Distancia, 2020. http://dx.doi.org/10.22490/ecacen.4270.

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El sistema económico, político y social también ha venido sufriendo cambios constantes, por lo tanto se han visto en la obligación de evolucionar a la par con la globalización, a raíz de esto la gobernanza busca hacer frente a los problemas que surgen en la sociedad, partiendo del diseño y desarrollo de las políticas públicas para promover los emprendimientos en los que tanto los actores públicos como los privados pueden hacerse partícipes para dar una respuesta de manera equitativa a las necesidades actuales. Uno de los problemas que se aborda es que la economía presenta debilidades y que est

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Bagolle, Alexandre, Mario Casco, Jennifer Nelson, Pablo Orefice, Georgina Raygada, and Luis Tejerina. La gran oportunidad de la salud digital en América Latina y el Caribe. Inter-American Development Bank, 2022. http://dx.doi.org/10.18235/0004153.

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La pandemia de COVID-19 demostró la centralidad de la salud de la población para las economías y el bienestar social, a la vez que evidenció serios problemas estructurales de larga data en los sistemas sanitarios. En América Latina y el Caribe (ALC), se destacaron serias deficiencias en dimensiones básicas como calidad, resultados, costos y equidad. Hoy, los países deben gestionar la complejidad cada vez mayor de sus sistemas sanitarios mientras hacen frente a una crisis económica sin precedentes. Este documento aborda cada aspecto del proceso de TD, comparte evidencia, prácticas y recomendaci

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