Tootfinder

Fronthaul-Aware User-Centric Generalized Cell-Free Massive MIMO Systems
Zahra Mobini, Ahmet Hasim Gokceoglu, Li Wang, Gunnar Peters, Hien Quoc Ngo
https://arxiv.org/abs/2506.14494

Fronthaul-Aware User-Centric Generalized Cell-Free Massive MIMO Systems
We consider fronthaul-limited generalized zeroforcing-based cell-free massive multiple-input multiple-output (CF-mMIMO) systems with multiple-antenna users and multipleantenna access points (APs) relying on both cooperative beamforming (CB) and user-centric (UC) clustering. The proposed framework is very general and can be degenerated into different special cases, such as pure CB/pure UC clustering, or fully centralized CB/fully distributed beamforming. We comprehensively analyze the spectral e…

Character sheaves on loop Lie algebras: polar partition
Ngo Bao Chau, Zhiwei Yun
https://arxiv.org/abs/2506.14584 https://arxiv.org/p…

Character sheaves on loop Lie algebras: polar partition
In this paper we propose a partition of loop Lie algebras into invariant sets parametrized by polar data. Our polar partition is motivated by J-K. Yu's construction of supercuspidal representations and leads to a conjectural construction of character sheaves on loop Lie algebras.

An Empirical Study of Multi-Agent RAG for Real-World University Admissions Counseling
Anh Nguyen-Duc, Chien Vu Manh, Bao Anh Tran, Viet Phuong Ngo, Luan Le Chi, Anh Quang Nguyen
https://arxiv.org/abs/2507.11272

An Empirical Study of Multi-Agent RAG for Real-World University Admissions Counseling
This paper presents MARAUS (Multi-Agent and Retrieval-Augmented University Admission System), a real-world deployment of a conversational AI platform for higher education admissions counseling in Vietnam. While large language models (LLMs) offer potential for automating advisory tasks, most existing solutions remain limited to prototypes or synthetic benchmarks. MARAUS addresses this gap by combining hybrid retrieval, multi-agent orchestration, and LLM-based generation into a system tailored fo…

The Rosetta Stone project. III. ALMA synthetic observations of fragmentation in high-mass star-forming clumps
Alice Nucara, Alessio Traficante, Ugo Lebreuilly, Ngo-Duy Tung, Sergio Molinari, Patrick Hennebelle, Leonardo Testi, Ralf S. Klessen, Veli-Matti Pelkonen, Adam Avison, Milena Benedettini, Alessandro Coletta, Fabrizio De Angelis, Davide Elia, Gary A. Fuller, Bethany M. Jones, Seyma Mercimek, Chiara Mininni, Stefania Pezzuto, Thushara Pillai, Veronica Roccatagliata, Eugenio Schis…

The Rosetta Stone project. III. ALMA synthetic observations of fragmentation in high-mass star-forming clumps
The physical mechanisms that regulate the collapse of high-mass parsec-scale clumps and allow them to form clusters of new stars represent a crucial aspect of star formation. To investigate these mechanisms, we developed the Rosetta Stone project: an end-to-end (simulations-observations) framework that is based on the systematic production of realistic synthetic observations of clump fragmentation and their comparison with real data. In this work, we compare ALMA 1.3mm continuum dust emission o…

Mechanism and Stability of Li-Dynamics in Amorphous Li-Ti-P-S Based Mixed Ionic-Electronic Conductor
Selva Chandrasekaran Selvaraj, Daiwei Wang, Donghai Wang, Anh T. Ngo
https://arxiv.org/abs/2506.11199

Mechanism and Stability of Li-Dynamics in Amorphous Li-Ti-P-S Based Mixed Ionic-Electronic Conductor
Mixed ionic-electronic conductor (MIEC) exhibit both high ionic and electronic conductivity to improve the battery performance. In this work, we investigate the mechanism and stability of transport channels in recently developed our MIEC material, amorphous Ti-doped lithium phosphorus sulfide (LPS), using molecular dynamics (MD) simulations with a 99\% accurate machine-learning force field (MLFF) trained on \textit{ab-initio} MD data. The achieved MLFF helps efficient large-scale MD simulations…

Israëliërs en Palestijnen tonen elkaars verliezen: ‘Heel controversieel wat wij hier doen’ | #ADnl
https://www.ad.nl/buitenland/israeliers-en

If you burn fossil fuels (and have no plan to migrate to an EV & heatpump or similar), plus you buy a lot of plastic (made from fossil fuel) and acrylic/polyester clothing - well I hate to break it to you, but you cannot make up for this by being a vegan or re-posting toots from a Kindness to Animals NGO.
Those animals you want to be nice to require a clean world with a normal climate in order to survive (incidentally, so do we).

Newspapers let the fox in and now they dead... Canada too. Even after FB banned news orgs on their platform here in Canada those news orgs STILL used it slavishly.
Like some weird media-version of Stockholm Syndrome.
#canpoli #journalism #media #canada #truth #posttruth #democracy
https://games.ngo/@crecente/114696097895857405

After having operated without a nature permit for years, Amsterdam Schiphol Airport got one from the Minister in 2023. An NGO challenged it and now the court has decided to cancel it: "not carefully prepared and motivated". The airport is in illegal operation mode once more. https://

Rechtbank vernietigt natuurvergunning Schiphol, gevolgen onduidelijk
Volgens de rechtbank heeft Schiphol onvoldoende onderbouwd waarom de vergunning in stand moest blijven.

Kleine Anfrage:
Eine Antwort wie eine Ohrfeige an #CDU #CSU vom Bundestag!
Lesenswert
https://www.

551 Fragen der Union zu NGOs: Eine Antwort wie eine Ohrfeige
Die Unionsfraktion wollte herausfinden, ob der Staat Organisationen fördert, die gegen rechts demonstrieren. Die Antwort hat es in sich.

Yvette Clarke endorses Adrienne Adams for New York City mayor (Emily Ngo/Politico)
https://www.politico.com/news/2025/06/05/yvette-clarke-adrienne-adams-new-york-city-mayor-00387455
http://www.memeorandum.com/250605/p6#a250605p6

Replaced article(s) found for cs.LG. https://arxiv.org/list/cs.LG/new
[3/6]:
- Integrating Spatiotemporal Features in LSTM for Spatially Informed COVID-19 Hospitalization Forec...
Zhongying Wang, Thoai D. Ngo, Hamidreza Zoraghein, Benjamin Lucas, Morteza Karimzadeh

On the existence of negative moments for some non-colliding particle systems and its application
Minh Thang Do, Hoang Long Ngo
https://arxiv.org/abs/2507.04022

On the existence of negative moments for some non-colliding particle systems and its application
We consider a class of $d$-dimensional stochastic differential equations that model a non-colliding random particle system. We provide a sufficient condition, which does not depend on the dimension $d$, for the existence of negative moments of the gap between two particles, and then apply this result to study the strong rate of convergence of the semi-implicit Euler-Maruyama approximation scheme. Our finding improves a recent result of Ngo and Taguchi (Annals of Applied Probability, 2020).

Simultaneous nonvanishing of Dirichlet $L$-functions in Galois orbits
Hung M. Bui, Alexandra Florea, Hieu T. Ngo
https://arxiv.org/abs/2507.06609 https://

Simultaneous nonvanishing of Dirichlet $L$-functions in Galois orbits
Under the Generalized Riemann Hypothesis, we prove that given any two distinct imprimitive Dirichlet characters $η_1, η_2$ modulo $q=p^k$, a positive proportion of characters $χ$ modulo $q$ in a fixed Galois orbit of primitive characters satisfies the nonvanishing property that $L(1/2,χη_1) L(1/2,χη_2) \neq 0$, as $k \to \infty$ (with $p$ fixed). Previously, only a positive proportion of nonvanishing result was available in Galois orbits (as opposed to simultaneously nonvanishing), due t…

Secrecy Offloading Analysis of UAV-assisted NOMA-MEC Incorporating WPT in IoT Networks
Gia-Huy Nguyen, Anh-Nhat Nguyen, Minh-Sang Nguyen, Khai Nguyen, Tung-Son Ngo, Ngoc-Anh Bui, Phuong-Chi Le, Manh-Duc Hoang
https://arxiv.org/abs/2507.08352

Secrecy Offloading Analysis of UAV-assisted NOMA-MEC Incorporating WPT in IoT Networks
This article studies the efficiency of secrecy data offloading for an unmanned aerial vehicle (UAV)-assisted nonorthogonal multiple access (NOMA)-integrated mobile-edge computing (MEC) incorporating wireless power transfer (WPT) within an Internet of Things (IoT) network. Specifically, this study assumes an UAV to function in dual roles: as a mobile computation platform and as an aerial power-supply station, offering substantial advantages for resource-constrained edge devices (EDs) in mitigati…

The Rosetta Stone Project. I. A suite of radiative magnetohydrodynamics simulations of high-mass star-forming clumps
Ugo Lebreuilly, Alessio Traficante, Alice Nucara, Ngo-Duy Tung, Patrick Hennebelle, Sergio Molinari, Ralf S. Klessen, Leonardo Testi, Veli-Matti Pelkonen, Milena Benedettini, Alessandro Coletta, Davide Elia, Chiara Mininni, Stefania Pezzuto, Juan D. Soler, Paolo Suin, Claudia Toci

The Rosetta Stone Project. I. A suite of radiative magnetohydrodynamics simulations of high-mass star-forming clumps
Context. Star formation and, in particular, high-mass star formation are key astrophysical processes that are far from being fully understood. Unfortunately, progress in these fields is slow because observations are hard to interpret as they cannot be directly compared to numerical simulations. Synthetic observations are therefore necessary to better constrain the models. Aims. With the Rosetta Stone project, we aim to develop an end-to-end pipeline to compare star formation simulations with ob…

Cat Royale: An Artistic Inquiry into Trust in Robots
Matt Adams, Nick Tandavanitj, Steve Benford, Ayse Kucukyilmaz, Victor Ngo, Simon Castle-Green, Guido Salimberi, Pepita Bernard, Joel Fischer, Alan Chamberlain, Eike Schneiders, Clara Mancini
https://arxiv.org/abs/2507.04970

Cat Royale: An Artistic Inquiry into Trust in Robots
Cat Royale is an artwork created by the artists Blast Theory to explore the question of whether we should trust robots to care for our loved ones. The artists endeavoured to create a `Cat Utopia', a luxurious environment that was inhabited by a family of three cats for six hours a day for twelve days, at the centre of which a robot arm played with them by wielding toys. Behind the scenes, the decision engine recommended games based on ongoing assessment of their happiness. A video installation …

Mixed 3D-2D asymptotics for the weak and strong solutions of the rotating magnetohydrodynamic system
Fr\'ed\'eric Charve (LAMA), Van-Sang Ngo (LMRS)
https://arxiv.org/abs/2507.06678 https://arxiv.org/pdf/2507.06678 https://arxiv.org/html/2507.06678
arXiv:2507.06678v1 Announce Type: new
Abstract: In this article, we consider the 3D-rotating magnetohydrodynamic (MHD) system when the initial velocity and magnetic field both feature some 2D-part (i.-e. depending only on the horizontal space variables). We prove for weak and strong solutions, that the limit system, when the Rossby number goes to zero (i.-e. for strong rotation), is a 2D-MHD system with three components. Moreover we are able to provide explicit global-in-time convergence rates thanks to adapted Strichartz estimates and with the help of an additional 3D magnetic field transported by the 2D limit velocity.
toXiv_bot_toot

Bridging Machine Learning and Glassy Dynamics Theory for Predictive Polymer Modeling
Anh D. Phan, Ngo T. Que, Nguyen T. T. Duyen, Phan Thanh Viet, Quach K. Quang, Baicheng Mei
https://arxiv.org/abs/2507.06194

Bridging Machine Learning and Glassy Dynamics Theory for Predictive Polymer Modeling
Understanding and predicting the glassy dynamics of polymers remain fundamental challenges in soft matter physics. While the Elastically Collective Nonlinear Langevin Equation (ECNLE) theory has been successful in describing relaxation dynamics, its practical application to polymers depends on a thermal mapping to connect theory with experiment, which in turn requires detailed thermodynamic data. Such data may not be available for chemically complex or newly designed polymers. In this work, we …

In einer Wiener Schule wurden an 16 Tagen über 30 Grad gemessen.
#Greenpeace warnt vor den Folgen der Hitze in #Klassenzimmer​n. #Kreislaufprobleme und

Umwelt: Greenpeace warnt vor Hitze in Schulen
Zum Schulschluss warnt Greenpeace vor Hitze in vielen Klassen. An einer Wiener Schule wurden Messungen durchgeführt. Seit Ende Mai wurden an 16 Tagen Temperaturen über 30 Grad in der Klasse gemessen. Die NGO fordert ein Sofortprogramm für hitzetaugliche Schulen.

Diesen Artikel solltet ihr unbedingt lesen. #Netanjahu setzt die israelische Zivilgesellschaft unter Druck, mit Mitteln, die auch Putin anwendet. Demokratie in Israel war gestern, heute ist sie auf dem Weg in eine Autokratie rechter und ultrarechter Kriminieller.

Breaking the Silence: "Es ist an der Zivilgesellschaft, Israel zur Rechenschaft zu ziehen"
Die israelische NGO Breaking the Silence klärt über die Besatzung im Westjordanland und in Gaza auf. Nun bedrohen neue Gesetze ihre Arbeit.

Replaced article(s) found for cs.DB. https://arxiv.org/list/cs.DB/new
[1/1]:
- On the Convergence Rate of Linear Datalogo over Stable Semirings
Sungjin Im, Benjamin Moseley, Hung Ngo, Kirk Pruhs

Repeton: Structured Bug Repair with ReAct-Guided Patch-and-Test Cycles
Nguyen Phu Vinh, Anh Chung Hoang, Chris Ngo, Truong-Son Hy
https://arxiv.org/abs/2506.08173

Repeton: Structured Bug Repair with ReAct-Guided Patch-and-Test Cycles
Large Language Models (LLMs) have shown strong capabilities in code generation and comprehension, yet their application to complex software engineering tasks often suffers from low precision and limited interpretability. We present Repeton, a fully open-source framework that leverages LLMs for precise and automated code manipulation in real-world Git repositories. Rather than generating holistic fixes, Repeton operates through a structured patch-and-test pipeline: it iteratively diagnoses issue…

This https://arxiv.org/abs/2411.06875 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_eco…

NGO Activism: Exposure vs. Influence
We analyze the timing of NGO campaigns to shed light on NGOs' strategies and how they evolve over time. Data from 2,500 campaigns show that NGOs are six times more likely to launch campaigns on their target's Annual General Meeting (AGM) date. Although this strategy increases media exposure and stakeholder scrutiny, resulting in consumer backlash and related shareholder proposals at the following AGM of the targeted firm, it has no impact on current AGM votes. As NGOs build reputational capital…

Is the hyperscaling relation violated below the upper critical dimension in some particular cases?
Hung T. Diep, Van-Thanh Ngo
https://arxiv.org/abs/2507.02159

Is the hyperscaling relation violated below the upper critical dimension in some particular cases?
In this review, we show our results with new interpretation on the critical exponents of thin films obtained by high-performance multi-histogram Monte Carlo simulations. The film thickness $N_z$ consists of a few layers up to a dozen of layers in the $z$ direction. The free boundary condition is applied in this direction while in the $xy$ plane periodic boundary conditions are used. Large $xy$ plane sizes are used for finite-size scaling. The Ising model is studied with nearest-neighbor (NN) in…

I'll be at #igf2025 this week! Most likely hanging out with the folks in @… and other NGO and #OpenSource people.
If you see me, come and say hi! 😄

Billionaire and radio host John Catsimatidis prefers Eric Adams over fellow Republican in mayor's race (Emily Ngo/Politico)
https://www.politico.com/news/2025/06/27/billionaire-and-radio-host-john-catsimatidis-prefers-eric-adams-over-fellow-republican-in-mayors-race-00429886
http://www.memeorandum.com/250627/p163#a250627p163

Near-Field Energy Harvesting Using XL-MIMO Over Non-Stationary Channels
Muhammad Zeeshan Mumtaz, Mohammadali Mohammadi, Hien Quoc Ngo, Michail Matthaiou
https://arxiv.org/abs/2506.20067

Near-Field Energy Harvesting Using XL-MIMO Over Non-Stationary Channels
This paper explores the maximization of the harvested power efficiency (HPE) in a modular extremely large multiple-input multiple-output (XL-MIMO) system, which supports energy harvesting (EH) for near-field users. These users are located in spatially distinct visibility regions (VRs) with non-stationary channel characteristics. We propose to determine which sub-arrays are switched on or off as well the power control coefficients at the sub-arrays to maximize the HPE. The design can be processe…

Replaced article(s) found for cond-mat.str-el. https://arxiv.org/list/cond-mat.str-el/new
[1/1]:
- First-principle Study of Multiple Metastable Charge Ordering States in La$_{1/3}$Sr$_{2/3}$FeO$_{3}$
Nam Nguyen, Alex Taekyung Lee, Vijay Singh, Anh T. Ngo, Hyowon…

🌎 Labor, Environmental, and Social Justice Groups Call on Micron to Protect Workers and Communities – American Indian Law Alliance (https://aila.ngo/labor-environmental-and-social-justice-groups-call-on-micron-to-protect-workers-and-communities/).

Near-Field SWIPT Using XL-MIMO: Power Allocation and Subarray Activation
Muhammad Zeeshan Mumtaz, Mohammadali Mohammadi, Hien Quoc Ngo, Michail Matthaiou
https://arxiv.org/abs/2506.20050

Near-Field SWIPT Using XL-MIMO: Power Allocation and Subarray Activation
This paper investigates the simultaneous wireless information and power transfer (SWIPT) capability of a modular extremely large multiple-input multiple-output (XL-MIMO) system, in the context of power consumption (PC) efficiency. The network users are divided into two functional categories: information decoding (ID) users and energy harvesting (EH) users. Non-stationary near-field channels are considered whilst the users are located in spatially distinct visibility regions (VRs). We formulate …

There's an NGO in #Indonesia that has been happy to speak with me about #Japan or #WorldBank funding for #coal or

Noncoherent MIMO Communications: Theoretical Foundation, Design Approaches, and Future Challenges
Khac-Hoang Ngo, Diego Cuevas, Ruben de Miguel Gil, Victor Monzon Baeza, Ana Garcia Armada, Ignacio Santamaria
https://arxiv.org/abs/2505.23172

Noncoherent MIMO Communications: Theoretical Foundation, Design Approaches, and Future Challenges
Noncoherent communication is a promising paradigm for future wireless systems where acquiring accurate channel state information (CSI) is challenging or infeasible. It provides methods to bypass the need for explicit channel estimation in practical scenarios such as high-mobility networks, massive distributed antenna arrays, energy-constrained Internet-of-Things devices, and unstructured propagation environments. This survey provides a comprehensive overview of noncoherent communication strateg…

Interfacial reconstruction effects in insulating double perovskite Nd$_2$NiMnO$_6$/SrTiO$_3$ and Nd$_2$NiMnO$_6$/NdGaO$_3$ thin films
Nandana Bhattacharya, Ranjan Kumar Patel, Siddharth Kumar, Prithwijit Mandal, Jyotirmay Maity, Christoph Klewe, Zhan Zhang, Hua Zhou, Srimanta Middey
https://arxiv.org/abs/2506.20264

Interfacial reconstruction effects in insulating double perovskite Nd$_2$NiMnO$_6$/SrTiO$_3$ and Nd$_2$NiMnO$_6$/NdGaO$_3$ thin films
Ferromagnetic insulating (FMI) double perovskite oxides (DPOs) $A_2BB'$O$_6$ with near-room-temperature Curie temperatures are promising candidates for ambient-temperature spintronics applications. To realize their potential, epitaxial stabilization of DPO films and understanding the effect of multiple broken symmetries across the film/substrate interface are crucial. This study investigates ultrathin films of the FMI Nd$_2$NiMnO$_6$ (NNMO) grown on SrTiO$_3$ (STO) and NdGaO$_3$ (NGO) substrate…

Variational Bayesian Channel Estimation and Data Detection for Cell-Free Massive MIMO with Low-Resolution Quantized Fronthaul Links
Sajjad Nassirpour, Toan-Van Nguyen, Hien Q. Ngo, Le-Nam Tran, Tharmalingam Ratnarajah, Duy H. N. Nguyen
https://arxiv.org/abs/2506.18863

Variational Bayesian Channel Estimation and Data Detection for Cell-Free Massive MIMO with Low-Resolution Quantized Fronthaul Links
We study the joint channel estimation and data detection (JED) problem in a cell-free massive multiple-input multiple-output (CF-mMIMO) network, where access points (APs) communicate with a central processing unit (CPU) over fronthaul links. However, the bandwidth of these links is limited, and thus, presents challenges to the applicability of CF-mMIMO, especially with an ever-increasing number of users. To address this, we propose a method based on variational Bayesian (VB) inference for perfo…