Tootfinder

Press freedom advocates fear Peru's government is taking aim at the independent news media via a criminal investigation into veteran reporter Gustavo Gorriti (Samantha Schmidt/Washington Post)
https://wapo.st/4aNF6wi

In criminal probe of reporter, advocates see attack on Peru’s democracy
Gustavo Gorriti, the country’s most prominent journalist, is under investigation into claims he traded “media support” to government lawyers for leaks.

Gustavo Petro has exhausted the alliance with sections of the ruling class.
Now he's reinforcing his government and considering a constituent assembly, presumably to rewrite the constitution.
Las rectificaciones de Petro – Rebelion
https://rebelion.org/las-rectificacion

Press freedom advocates fear Peru's government is taking aim at the independent news media via a criminal investigation into veteran reporter Gustavo Gorriti (Samantha Schmidt/Washington Post)
https://wapo.st/4aNF6wi

In criminal probe of reporter, advocates see attack on Peru’s democracy
Gustavo Gorriti, the country’s most prominent journalist, is under investigation into claims he traded “media support” to government lawyers for leaks.

Rethinking Software Engineering in the Era of Foundation Models: A Curated Catalogue of Challenges in the Development of Trustworthy FMware
Ahmed E. Hassan, Dayi Lin, Gopi Krishnan Rajbahadur, Keheliya Gallaba, Filipe R. Cogo, Boyuan Chen, Haoxiang Zhang, Kishanthan Thangarajah, Gustavo Ansaldi Oliva, Jiahuei Lin, Wali Mohammad Abdullah, Zhen Ming Jiang

Rethinking Software Engineering in the Era of Foundation Models: A Curated Catalogue of Challenges in the Development of Trustworthy FMware
Foundation models (FMs), such as Large Language Models (LLMs), have revolutionized software development by enabling new use cases and business models. We refer to software built using FMs as FMware. The unique properties of FMware (e.g., prompts, agents, and the need for orchestration), coupled with the intrinsic limitations of FMs (e.g., hallucination) lead to a completely new set of software engineering challenges. Based on our industrial experience, we identified 10 key SE4FMware challenges …

Notes on a short-cut to the proof of the $\mathbf{M}_3$-$\mathbf{N}_5$ Theorem
M. R. Emamy-K., Gustavo A. Mel\'endez R\'ios
https://arxiv.org/abs/2402.14931

Notes on a short-cut to the proof of the $\mathbf{M}_3$-$\mathbf{N}_5$ Theorem
This paper presents two shortcuts to a classical proof of the $\mathbf{M}_3$-$\mathbf{N}_5$ Theorem, which can be found in B. Davey and H. Priestley [2] and S. Burris and H. Sankappanavar [1]. To be precise, the shortcuts pertain a particular step of the proof that requires showing an algebraic equality. In addition, we briefly discuss how to compare the lengths of the three proofs (the original and our two proposed shortcuts). To do so, we introduce two methods to compare the lengths of proofs…

The New Era of Dynamic Pricing: Synergizing Supervised Learning and Quadratic Programming
Gustavo Bramao, Ilia Tarygin
https://arxiv.org/abs/2402.14844 htt…

The New Era of Dynamic Pricing: Synergizing Supervised Learning and Quadratic Programming
In this paper, we explore a novel combination of supervised learning and quadratic programming to refine dynamic pricing models in the car rental industry. We utilize dynamic modeling of price elasticity, informed by ordinary least squares (OLS) metrics such as p-values, homoscedasticity, error normality. These metrics, when their underlying assumptions hold, are integral in guiding a quadratic programming agent. The program is tasked with optimizing margin for a given finite set target.

Perturbative criteria for the ergodicity of interacting dissipative quantum lattice systems
Lorenzo Bertini, Alberto De Sole, Gustavo Posta, Carlo Presilla
https://arxiv.org/abs/2402.15488

Perturbative criteria for the ergodicity of interacting dissipative quantum lattice systems
We introduce a class of quantum Markov semigroups describing the evolution of interacting quantum lattice systems, specified either as generic qudits or as fermions. The corresponding generators, which include both conservative and dissipative evolutions, are given by the superposition of local generators in the Lindblad form. Under general conditions, we show that the associated infinite volume dynamics is well defined and can be obtained as the strong limit of the finite volume dynamics. By r…

Nakayama-type phenomena in higher Auslander--Reiten theory
Gustavo Jasso, Julian K\"ulshammer
https://arxiv.org/abs/2402.15889 https://

Nakayama-type phenomena in higher Auslander--Reiten theory
This paper surveys recent contructions in higher Auslander--Reiten theory. We focus on those which, due to their combinatorial properties, can be regarded as higher dimensional analogues of path algebras of linearly oriented type $\mathbb{A}$ quivers. These include higher dimensional analogues of Nakayama algebras, of the mesh category of type $\mathbb{Z}\mathbb{A}_\infty$ and the tubes, and of the triangulated category generated by an $m$-spherical object. For $m=2$, the latter category can be…

Perturbative criteria for the ergodicity of interacting dissipative quantum lattice systems
Lorenzo Bertini, Alberto De Sole, Gustavo Posta, Carlo Presilla
https://arxiv.org/abs/2402.15488

Perturbative criteria for the ergodicity of interacting dissipative quantum lattice systems
We introduce a class of quantum Markov semigroups describing the evolution of interacting quantum lattice systems, specified either as generic qudits or as fermions. The corresponding generators, which include both conservative and dissipative evolutions, are given by the superposition of local generators in the Lindblad form. Under general conditions, we show that the associated infinite volume dynamics is well defined and can be obtained as the strong limit of the finite volume dynamics. By r…

An image-computable model of speeded decision-making
Paul I. Jaffe, Gustavo X. Santiago-Reyes, Robert J. Schafer, Patrick G. Bissett, Russell A. Poldrack
https://arxiv.org/abs/2403.16382

An image-computable model of speeded decision-making
Evidence accumulation models (EAMs) are the dominant framework for modeling response time (RT) data from speeded decision-making tasks. While providing a good quantitative description of RT data in terms of abstract perceptual representations, EAMs do not explain how the visual system extracts these representations in the first place. To address this limitation, we introduce the visual accumulator model (VAM), in which convolutional neural network models of visual processing and traditional EAM…

Ancak müzik dinleyecek ortamım oldu bu saatte...
https://open.spotify.com/track/7v2ATMibMH2SjZDVTys9ZN?si=DwaUUvYPQ9G8f1m7xIxJjg

Building a Language-Learning Game for Brazilian Indigenous Languages: A Case of Study
Gustavo Polleti
https://arxiv.org/abs/2403.14515 https://

Building a Language-Learning Game for Brazilian Indigenous Languages: A Case of Study
In this paper we discuss a first attempt to build a language learning game for brazilian indigenous languages and the challenges around it. We present a design for the tool with gamification aspects. Then we describe a process to automatically generate language exercises and questions from a dependency treebank and a lexical database for Tupian languages. We discuss the limitations of our prototype highlighting ethical and practical implementation concerns. Finally, we conclude that new data ga…

Gustavo Petro anuncia que Colombia suspende toda compra de armas a Israel - NODAL
https://www.nodal.am/2024/02/gustavo-petro-anuncia-que-colombia-suspende-toda-compra-de-armas-a-israel/

Gustavo Petro anuncia que Colombia suspende toda compra de armas a Israel - NODAL
NODAL - Noticias de América Latina y el Caribe

Roots of full polynomials related to diagonal polynomials
Jos\'e Gustavo Coelho
https://arxiv.org/abs/2403.13133 https://arxiv.or…

Roots of full polynomials related to diagonal polynomials
Let $p$ be an odd prime, $m$ an even integer, $\mathbb{F}_q$ a finite field with $q = p^m$ elements, $f \in \mathbb{F}_q[x_1, \dots, x_n]$ a polynomial in $n$ variables and let us denote by $N(f)$ the number of roots of $f$ in $\mathbb{F}_q^n$. In this paper we consider the family of full polynomials, i.e., polynomials of the form \begin{equation*} f(x_1, \dots, x_n) = a_1 x_1^{d_{1,1}}\cdots x_n^{d_{n,1}} + a_2 x_1^{d_{1,2}}\cdots x_n^{d_{n,2}} + \dots + a_n x_1^{d_{1,s}}\cdots x_n^{d_{n,s}} -…

An image-computable model of speeded decision-making
Paul I. Jaffe, Gustavo X. Santiago-Reyes, Robert J. Schafer, Patrick G. Bissett, Russell A. Poldrack
https://arxiv.org/abs/2403.16382

An image-computable model of speeded decision-making
Evidence accumulation models (EAMs) are the dominant framework for modeling response time (RT) data from speeded decision-making tasks. While providing a good quantitative description of RT data in terms of abstract perceptual representations, EAMs do not explain how the visual system extracts these representations in the first place. To address this limitation, we introduce the visual accumulator model (VAM), in which convolutional neural network models of visual processing and traditional EAM…

Taking the pulse of the outer Milky Way with HOWVAST: an RR Lyrae density profile out to $>$200 kpc
Gustavo E. Medina, Ricardo R. Mu\~noz, Jeffrey L. Carlin, A. Katherina Vivas, Eva K. Grebel, Clara E. Mart\'inez-V\'azquez, Camilla J. Hansen
https://arxiv.org/abs/2402.14055

Taking the pulse of the outer Milky Way with HOWVAST: an RR Lyrae density profile out to $>$200 kpc
In order to constrain the evolutionary history of the Milky Way, we hunt for faint RR Lyrae stars (RRLs) using Dark Energy Camera data from the High cadence Transient Survey (HiTS) and the Halo Outskirts With Variable Stars (HOWVAST) survey. We report the detection of $\sim500$ RRLs, including previously identified stars and $\sim90$ RRLs not yet reported. We identify 9 new RRLs beyond $100$ kpc from the Sun, most of which are classified as fundamental-mode pulsators. The periods and amplitudes…

Euler-Heisenberg Black Holes in Einsteinian Cubic Gravity
Gustavo Gutierrez-Cano, Gustavo Niz
https://arxiv.org/abs/2402.06867 https://

Euler-Heisenberg Black Holes in Einsteinian Cubic Gravity
We explore black hole solutions and some of its physical properties in Einstein's theory in 4D, modified by a cubic gravity term and in the presence of non-linear electrodynamics. In the context of Effective Field Theories (EFT) and under certain assumptions, these curvature and non-linear electromagnetic terms represent the first corrections to the Einstein-Maxwell theory. We obtain static and spherically symmetric generalizations to the asymptotically flat Reissner-Nordström metric using per…

Gustavo Petro anuncia que Colombia suspende toda compra de armas a Israel - NODAL
https://www.nodal.am/2024/02/gustavo-petro-anuncia-que-colombia-suspende-toda-compra-de-armas-a-israel/

Gustavo Petro anuncia que Colombia suspende toda compra de armas a Israel - NODAL
NODAL - Noticias de América Latina y el Caribe

A class of bootstrap based residuals for compositional data
Gustavo H. A. Pereira, Jianwen Cai
https://arxiv.org/abs/2403.13544 https://

A class of bootstrap based residuals for compositional data
Regression models for compositional data are common in several areas of knowledge. As in other classes of regression models, it is desirable to perform diagnostic analysis in these models using residuals that are approximately standard normally distributed. However, for regression models for compositional data, there has not been any multivariate residual that meets this requirement. In this work, we introduce a class of asymptotically standard normally distributed residuals for compositional d…

Simultaneous NICER and NuSTAR observations of the Ultraluminous source NGC 4190 ULX-1
Jorge A. Combi, Federico A. Fogantini, Enzo A. Saavedra, Gustavo E. Romero, Leandro Abaroa, Federico Garc\'ia, Pedro Luque-Escamilla, Josep Mart\'i, Nelson Cruz-Sanchez
https://arxiv.org/abs/2403.12300

Simultaneous NICER and NuSTAR observations of the Ultraluminous source NGC 4190 ULX-1
We present an X-ray analysis of three different XMM-Newton observations together with simultaneous NICER and NuSTAR observations of the ultraluminous X-ray source NGC 4190 ULX-1. Our goal is to constrain the structure of the accretion disk and the geometrical properties of the source. We performed a temporal and spectral analyses in the 0.4--30 keV energy range where the source is significantly detected in dedicated XMM-Newton, NICER and NuSTAR observations. The temporal analysis shows no flari…

Models for Storage in Database Backends
Edgard Schiebelbein (Amazon Web Services), Saalik Hatia (Amazon Web Services), Annette Bieniusa (Amazon Web Services), Gustavo Petri (Amazon Web Services), Carla Ferreira (NOVA), Marc Shapiro (DELYS)
https://arxiv.org/abs/2403.11716

Models for Storage in Database Backends
This paper describes ongoing work on developing a formal specification of a database backend. We present the formalisation of the expected behaviour of a basic transactional system that calls into a simple store API, and instantiate in two semantic models. The first one is a map-based, classical versioned key-value store; the second one, journal-based, appends individual transaction effects to a journal. We formalise a significant part of the specification in the Coq proof assistant. This work …

Positive topological entropy of Tonelli Lagrangian flows
Gonzalo Contreras, Jos\'e Ant\^onio G. Miranda, Luiz Gustavo Perona
https://arxiv.org/abs/2402.11416

Positive topological entropy of Tonelli Lagrangian flows
We study the topological entropy of the Lagrangian flow restricted to an energy level $E_{L}^{-1}(c) \subset TM$ for $ c >e_0(L)$. We prove that if the flow of the Tonelli Lagrangian $ L: M \to \mathbb{R}$, on a closed manifold of dimension $ n+1$, has a non-hyperbolic closed orbit or an infinite number of closed orbits with energy $ c>e_0(L)$ and satisfies certain open dense conditions, then there exist a smooth potential $ u: M\to \mathbb{R} $, with $ C^2$-norm arbitrarily small, such that th…

On a theorem of B. Keller on Yoneda algebras of simple modules
Gustavo Jasso
https://arxiv.org/abs/2402.14004 https://arxiv.org/pdf/2…

On a theorem of B. Keller on Yoneda algebras of simple modules
A theorem of Keller states that the Yoneda algebra of the simple modules over a finite-dimensional algebra is generated in cohomological degrees $0$ and $1$ as a minimal $A_\infty$-algebra. We provide a proof of an extension of Keller's theorem to abelian length categories by reducing the problem to a particular class of Nakayama algebras, where the claim can be shown by direct computation.

Taking the pulse of the outer Milky Way with HOWVAST: an RR Lyrae density profile out to $>$200 kpc
Gustavo E. Medina, Ricardo R. Mu\~noz, Jeffrey L. Carlin, A. Katherina Vivas, Eva K. Grebel, Clara E. Mart\'inez-V\'azquez, Camilla J. Hansen
https://arxiv.org/abs/2402.14055

Taking the pulse of the outer Milky Way with HOWVAST: an RR Lyrae density profile out to $>$200 kpc
In order to constrain the evolutionary history of the Milky Way, we hunt for faint RR Lyrae stars (RRLs) using Dark Energy Camera data from the High cadence Transient Survey (HiTS) and the Halo Outskirts With Variable Stars (HOWVAST) survey. We report the detection of $\sim500$ RRLs, including previously identified stars and $\sim90$ RRLs not yet reported. We identify 9 new RRLs beyond $100$ kpc from the Sun, most of which are classified as fundamental-mode pulsators. The periods and amplitudes…

Exploring Interaction Patterns for Debugging: Enhancing Conversational Capabilities of AI-assistants
Bhavya Chopra, Yasharth Bajpai, Param Biyani, Gustavo Soares, Arjun Radhakrishna, Chris Parnin, Sumit Gulwani
https://arxiv.org/abs/2402.06229

Exploring Interaction Patterns for Debugging: Enhancing Conversational Capabilities of AI-assistants
The widespread availability of Large Language Models (LLMs) within Integrated Development Environments (IDEs) has led to their speedy adoption. Conversational interactions with LLMs enable programmers to obtain natural language explanations for various software development tasks. However, LLMs often leap to action without sufficient context, giving rise to implicit assumptions and inaccurate responses. Conversations between developers and LLMs are primarily structured as question-answer pairs, …

Rethinking Software Engineering in the Foundation Model Era: From Task-Driven AI Copilots to Goal-Driven AI Pair Programmers
Ahmed E. Hassan (Jack), Gustavo A. Oliva (Jack), Dayi Lin (Jack), Boyuan Chen (Jack), Zhen Ming (Jack), Jiang
https://arxiv.org/abs/2404.10225

Rethinking Software Engineering in the Foundation Model Era: From Task-Driven AI Copilots to Goal-Driven AI Pair Programmers
The advent of Foundation Models (FMs) and AI-powered copilots has transformed the landscape of software development, offering unprecedented code completion capabilities and enhancing developer productivity. However, the current task-driven nature of these copilots falls short in addressing the broader goals and complexities inherent in software engineering (SE). In this paper, we propose a paradigm shift towards goal-driven AI-powered pair programmers that collaborate with human developers in a…

Parallel Implementations Assessment of a Spatial-Spectral Classifier for Hyperspectral Clinical Applications
Raquel Lazcano, Daniel Madro\~nal, Giordana Florimbi, Jaime Sancho, Sergio Sanchez, Raquel Leon, Himar Fabelo, Samuel Ortega, Emanuele Torti, Ruben Salvador, Margarita Marrero-Martin, Francesco Leporati, Eduardo Juarez, Gustavo M Callico, Cesar Sanz

Parallel Implementations Assessment of a Spatial-Spectral Classifier for Hyperspectral Clinical Applications
Hyperspectral (HS) imaging presents itself as a non-contact, non-ionizing and non-invasive technique, proven to be suitable for medical diagnosis. However, the volume of information contained in these images makes difficult providing the surgeon with information about the boundaries in real-time. To that end, High-Performance-Computing (HPC) platforms become necessary. This paper presents a comparison between the performances provided by five different HPC platforms while processing a spatial-s…

A resistive electron irradiation microsensor made from conductive electrospun polycaprolactone fibers loaded with carbon nanotubes and fullerene C60
Fabricio N. Molinari, Maria A. Mancuso, Emanuel Bilbao, Theo Rodriguez Campos, Gustavo Gimenez, Leandro N. Monsalve
https://arxiv.org/abs/2403.09201…

A resistive electron irradiation microsensor made from conductive electrospun polycaprolactone fibers loaded with carbon nanotubes and fullerene C60
In this work an electron radiation detector microdevices were fabricated and characterized. The devices consisted of a conductive electrospun mat made of polycaprolactone loaded with multiwalled carbon nanotubes and fullerene C60 deposited onto gold interdigitated microelectrodes. They were capable of permanently increase their conductivity upon exposure to electron beam irradiation from 0.02 pC/μm2 accelerated at 10 and 20 keV. This phenomenon could be explained due to the ability of C60 to t…

Self-Aligning Polar Active Matter
Paul Baconnier, Olivier Dauchot, Vincent D\'emery, Gustavo D\"uring, Silke Henkes, Cristi\'an Huepe, Amir Shee
https://arxiv.org/abs/2403.10151

Self-Aligning Polar Active Matter
Self-alignment describes the property of a polar active unit to align or anti-align its orientation towards its velocity. In contrast to mutual alignment, where the headings of multiple active units tend to directly align to each other -- as in the celebrated Vicsek model --, self-alignment impacts the dynamics at the individual level by coupling the rotation and displacements of each active unit. This enriches the dynamics even without interactions or external forces, and allows, for example, …

Rethinking Software Engineering in the Foundation Model Era: From Task-Driven AI Copilots to Goal-Driven AI Pair Programmers
Ahmed E. Hassan (Jack), Gustavo A. Oliva (Jack), Dayi Lin (Jack), Boyuan Chen (Jack), Zhen Ming (Jack), Jiang
https://arxiv.org/abs/2404.10225

Rethinking Software Engineering in the Foundation Model Era: From Task-Driven AI Copilots to Goal-Driven AI Pair Programmers
The advent of Foundation Models (FMs) and AI-powered copilots has transformed the landscape of software development, offering unprecedented code completion capabilities and enhancing developer productivity. However, the current task-driven nature of these copilots falls short in addressing the broader goals and complexities inherent in software engineering (SE). In this paper, we propose a paradigm shift towards goal-driven AI-powered pair programmers that collaborate with human developers in a…

Representatividad Muestral en la Incertidumbre Sim\'etrica Multivariada para la Selecci\'on de Atributos
Gustavo Sosa-Cabrera
https://arxiv.org/abs/2403.18685

Representatividad Muestral en la Incertidumbre Simétrica Multivariada para la Selección de Atributos
In this work, we analyze the behavior of the multivariate symmetric uncertainty (MSU) measure through the use of statistical simulation techniques under various mixes of informative and non-informative randomly generated features. Experiments show how the number of attributes, their cardinalities, and the sample size affect the MSU. In this thesis, through observation of results, it is proposed an heuristic condition that preserves good quality in the MSU under different combinations of these t…

Evolution of long-period compact radio sources driven by winds
J. E. HorvathAstronomy, IAG - S\~ao Paulo U., Brazil, Lucas M. de S\'aAstronomy, IAG - S\~ao Paulo U., Brazil, L\'ivia S. RochaAstronomy, IAG - S\~ao Paulo U., Brazil, Gustavo Y. ChinenAstronomy, IAG - S\~ao Paulo U., Brazil, Lucas G. Bar\~aoAstronomy, IAG - S\~ao Paulo U., Brazil, M\'arcio G. B. de AvellarAstronomy, IAG - S\~ao Paulo U., Brazil

Evolution of long-period compact radio sources driven by winds
We address in this work the nature and evolution of the long-period compact star sources, which has recently added several unexpected members. The central hypothesis is that particle winds drive their evolution, being an important factor for these relatively old sources. We show the consistency of this picture and remark some unsolved problems and caveats within it.

Linear combinations of cluster mean-field states applied to spin systems
Athanasios Papastathopoulos-Katsaros, Thomas M. Henderson, Gustavo E. Scuseria
https://arxiv.org/abs/2402.06760

Linear combinations of cluster mean-field states applied to spin systems
We present an innovative cluster-based method employing linear combinations of diverse cluster mean-field (cMF) states, and apply it to describe the ground state of strongly-correlated spin systems. In cluster mean-field theory, the ground state wavefunction is expressed as a factorized tensor product of optimized cluster states. While our prior work concentrated on a single cMF tiling, this study removes that constraint by combining different tilings of cMF states. Selection criteria, includin…

Focusing Surface Acoustic Waves with a Plasmonic Hypersonic Lens
Hilario D. Boggiano (Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de F\'isica, Buenos Aires, Argentina), Lin Nan (Chair in Hybrid Nanosystems, Nanoinstitute Munich, Faculty of Physics, Ludwig-Maximilians-Universit\"at M\"unchen, M\"unchen, Germany), Gustavo Grinblat (Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de F\'isica…

Focusing Surface Acoustic Waves with a Plasmonic Hypersonic Lens
Plasmonic nanoantennas have proven to be efficient transducers of electromagnetic to mechanical energy and vice versa. The sudden thermal expansion of these structures after an ultrafast optical pulsed excitation leads to the emission of hypersonic acoustic waves to the supporting substrate, which can be detected by another antenna that acts as a high-sensitive mechanical probe due to the strong modulation of its optical response. Sophisticated fabrication techniques, together with the implemen…

Relativistic and quantum electrodynamics effects on NMR shielding tensors of Tl$X$ ($X$ = H, F, Cl, Br, I, At) molecules
Karol Kozio{\l}, I. Agust\'in Aucar, Konstantin Gaul, Robert Berger, Gustavo A. Aucar
https://arxiv.org/abs/2404.07359

Relativistic and quantum electrodynamics effects on NMR shielding tensors of Tl$X$ ($X$ = H, F, Cl, Br, I, At) molecules
Results of relativistic calculations of nuclear magnetic resonance shielding tensors ($σ$) for the thallium monocation (Tl$^+$), thallium hydride (TlH) and thallium halides (TlF, TlCl, TlBr, TlI, and TlAt) are presented as obtained within a four-component polarization propagator formalism and a two-component linear response approach within the zeroth-order regular approximation. Additionally, some quantum electrodynamical (QED) effects on those NMR shieldings are estimated. A strong dependence…

On the set of supercyclic operators
Thiago R. Alves, Gustavo C. Souza
https://arxiv.org/abs/2403.18678 https://arxiv.org/pdf/2403.186…

On the set of supercyclic operators
In this article, we address a problem posed by F. Bayart regarding the existence of an infinite-dimensional closed vector subspace (excluding the null operator) within the set of supercyclic operators on Banach spaces. We resolve this problem by establishing the existence of the closed subspace. Furthermore, we prove that the set of supercyclic operators on $\ell_1$ contains, up to the null operator, an isometric copy of $\ell_1$.

A water structure indicator suitable for generic contexts: two-liquid behavior at hydration and nanoconfinement conditions and a molecular approach to hydrophobicity and wetting
Nicol\'as A. Loubet, Alejandro R. Verde, Gustavo A. Appignanesi
https://arxiv.org/abs/2404.08992

A water structure indicator suitable for generic contexts: two-liquid behavior at hydration and nanoconfinement conditions and a molecular approach to hydrophobicity and wetting
In a recent work we have briefly introduced a new structural index for water that, unlike previous indicators, was devised specifically for generic contexts beyond bulk conditions, making it suitable for hydration and nanoconfinement settings. In this work we shall study this metric in detail, demonstrating its ability to reveal the existence of a fine-tuned interplay between local structure and energetics in liquid water. This molecular principle enables the establishment of an extended hydrog…

Subset Adaptive Relaying for Streaming Erasure Codes
Muhammad Ahmad Kaleem, Gustavo Kasper Facenda, Ashish Khisti
https://arXiv.org/abs/2401.15056 https://…

Thalamocortical interactions shape hierarchical neural variability during stimulus perception
Adri\`a Tauste Campo, Antonio Zainos, Yuriria V\'azquez, Raul Adell Segarra, Manuel \'Alvarez, Gustavo Deco, Sergio Parra, Ranulfo Romo, Rom\'an Rossi-Pool
https://arxiv.org/abs/2403.09965

Thalamocortical interactions shape hierarchical neural variability during stimulus perception
The brain is hierarchically organized to process sensory signals. But, to what extent do functional connections within and across areas shape this hierarchical order? We addressed this problem in the thalamocortical network, while monkeys judged the presence or absence of a vibrotactile stimulus. We quantified the variability by means of intrinsic timescales and Fano factor, and functional connectivity by means of a directionality measure in simultaneously recorded neurons sharing the same cuta…

Triangulated structure for Bondarenko's Categories
Germ\'an Benitez, Gustavo Costa, Lucas Q. Pinto
https://arxiv.org/abs/2403.18836 https://…

Triangulated structure for Bondarenko's Categories
V. Bondarenko and Y. Drozd gives a description of all indecomposable objects in a category of representations of posets, nowadays known as the Bondarenko's category. This category was essential for V. Bekkert and H. Merklen classify all indecomposable objects of the derived category of gentle algebras. In view of this connection with the derived category, which possess a triangulated structure, and of the fact that in this paper we show that the Bondarenko's category is not an abelian category,…

Subset Adaptive Relaying for Streaming Erasure Codes
Muhammad Ahmad Kaleem, Gustavo Kasper Facenda, Ashish Khisti
https://arXiv.org/abs/2401.15056 https://…

Selected non-orthogonal configuration interaction with compressed single and double excitations
Chong Sun, Fei Gao, Gustavo E. Scuseria
https://arxiv.org/abs/2403.02350

Selected non-orthogonal configuration interaction with compressed single and double excitations
Addressing both dynamic and static correlation accurately is a primary goal in electronic structure theory. Non-orthogonal configuration interaction (NOCI) is a versatile tool for treating static correlation, offering chemical insights by combining diverse reference states. Nevertheless, achieving quantitative accuracy requires the inclusion of missing dynamic correlation. This work introduces a framework for compressing orthogonal single and double excitations into an NOCI of a much smaller di…

On the set of supercyclic operators
Thiago R. Alves, Gustavo C. Souza
https://arxiv.org/abs/2403.18678 https://arxiv.org/pdf/2403.186…

On the set of supercyclic operators
In this article, we address a problem posed by F. Bayart regarding the existence of an infinite-dimensional closed vector subspace (excluding the null operator) within the set of supercyclic operators on Banach spaces. We resolve this problem by establishing the existence of the closed subspace. Furthermore, we prove that the set of supercyclic operators on $\ell_1$ contains, up to the null operator, an isometric copy of $\ell_1$.

Triangulated structure for Bondarenko's Categories
Germ\'an Benitez, Gustavo Costa, Lucas Q. Pinto
https://arxiv.org/abs/2403.18836 https://…

Triangulated structure for Bondarenko's Categories
V. Bondarenko and Y. Drozd gives a description of all indecomposable objects in a category of representations of posets, nowadays known as the Bondarenko's category. This category was essential for V. Bekkert and H. Merklen classify all indecomposable objects of the derived category of gentle algebras. In view of this connection with the derived category, which possess a triangulated structure, and of the fact that in this paper we show that the Bondarenko's category is not an abelian category,…

Physico-chemical study of polymer mixtures formed by a polycation and a zwitterionic copolymer in aqueous solution and upon adsorption onto negatively charged surfaces
Laura Fernandez-Pena, Eduardo Guzman, Francisco Ortega, Lionel Bureau, Fabien Leonforte, Dandara Velasco, Ramon G. Rubio, Gustavo S. Luengo
https://arXiv.org/abs/…

Physico-chemical study of polymer mixtures formed by a polycation and a zwitterionic copolymer in aqueous solution and upon adsorption onto negatively charged surfaces
The adsorption of mixtures of charged polymers onto solid surfaces presents a big interest in different technological and industrial fields, and in particular, in cosmetics. This requires to deepen on the most fundamental physico-chemical bases governing the deposition, which is generally correlated to the interactions occurring in solution. This work explores the interaction in solution of model polymer mixtures formed by a cationic homopolymer (poly(diallyl-dimethyl-ammonium chloride), PDADMA…

Effect of molecular structure of eco-friendly glycolipid biosurfactants on the adsorption of hair-care conditioning polymers
Laura Fernandez-Pena, Eduardo Guzman, Fabien Leonforte, Ana Serrano-Pueyo, Krzysztof Regulski, Lucie Tournier-Couturier, Francisco Ortega, Ramon G. Rubio, Gustavo S. Luengo
https://arXiv.org/abs/2401.14892…

Effect of molecular structure of eco-friendly glycolipid biosurfactants on the adsorption of hair-care conditioning polymers
Pseudo-binary mixtures of different glycolipids, four different rhamnolipids (RL) and an alkyl polyglucoside (APG), with poly(diallyl-dimethylammonium chloride) (PDADMAC) have been studied in relation to their adsorption onto negatively charged surfaces to shed light on the impact of the molecular structure of biodegradable surfactants from natural sources (instead of synthetic surfactant, such as sodium laureth sulfate) on the adsorption of hair-care formulations. For this purpose, the self-as…