Tootfinder

Enhancing orientation and mobility assessments: Integrating visual and auditory factors using artificial intelligence tools https://tvst.arvojournals.org/article.aspx?articleid=2810422 Would the AI tools be capable of recommending sensory substitution apps? :-)

Implementation and Analysis of Different Geomagnetic Field Models for Attitude Determination and Control System (ADCS) of a Satellite
Hoor Bano, Tatiana Podladchikova, Bisma Sajid, Dmitry Ris
https://arxiv.org/abs/2506.19588

Implementation and Analysis of Different Geomagnetic Field Models for Attitude Determination and Control System (ADCS) of a Satellite
An Attitude Determination and Control System is essential for orientation stability and performance of slew maneuvers on the satellite. This research focuses on comparing two different geomagnetic field models, Direct Dipole Model and International Geomagnetic Reference Field Model, for modeling of magnetometer and magnetorquers. Both these magnetic field models are compared and analyzed for two satellite attitude cases: orientation stability and unloading of reaction wheels. Magnetometer model…

For all the shit I (rightfully) give Apple, I gotta say they deserve praise for how they implemented the new multitasking mode on iPadOS. Even on an iPad Mini you can absolutely do things more flexibly. I did a vertical split with a browser and irc a messenger app at the bottom, and it was perfectly comfortable and UI elements tended to fold away in ways that made sense.
Now, rotating the tablet maintained the orientation of the layout, and that messed a bit with the video that was …

Robust Embodied Self-Identification of Morphology in Damaged Multi-Legged Robots
Sahand Farghdani, Mili Patel, Robin Chhabra
https://arxiv.org/abs/2506.19984

Robust Embodied Self-Identification of Morphology in Damaged Multi-Legged Robots
Multi-legged robots (MLRs) are vulnerable to leg damage during complex missions, which can impair their performance. This paper presents a self-modeling and damage identification algorithm that enables autonomous adaptation to partial or complete leg loss using only data from a low-cost IMU. A novel FFT-based filter is introduced to address time-inconsistent signals, improving damage detection by comparing body orientation between the robot and its model. The proposed method identifies damaged …

Replaced article(s) found for math.CO. https://arxiv.org/list/math.CO/new
[1/2]:
- Orientation of good covers
P\'eter \'Agoston, G\'abor Dam\'asdi, Bal\'azs Keszegh, D\"om\"ot\"or P\'alv\"olgyi

Maximum Reachability Orientation of Mixed Graphs
Florian H\"orsch
https://arxiv.org/abs/2506.16171 https://arxiv.org/pdf/2506.16…

Maximum Reachability Orientation of Mixed Graphs
We aim to find orientations of mixed graphs optimizing the total reachability, a problem that has applications in causality and biology. For given a digraph $D$, we use $P(D)$ for the set of ordered pairs of distinct vertices in $V(D)$ and we define $κ_D:P(D)\rightarrow \{0,1\}$ by $κ_D(u,v)=1$ if $v$ is reachable from $u$ in $D$, and $κ_D(u,v)=0$, otherwise. We use $R(D)=\sum_{(u,v)\in P(D)}κ_D(u,v)$. Now, given a mixed graph $G$, we aim to find an orientation $\vec{G}$ of $G$ that maxim…

@…
I relate to your description of #aphantasia. So much of what I see, even in the "real world" has always been like an object in a CAD program. My sense of the object size and orientation was based on the object features, not its relationship to m…

Efficient Channel Estimation for Rotatable Antenna-Enabled Wireless Communication
Xue Xiong, Beixiong Zheng, Wen Wu, Xiaodan Shao, Liang Dai, Ming-Min Zhao, Jie Tang
https://arxiv.org/abs/2506.20158

Efficient Channel Estimation for Rotatable Antenna-Enabled Wireless Communication
Rotatable antenna (RA) is a promising antenna architecture that exploits additional spatial degrees of freedom (DoFs) to enhance the communication performance. To fully obtain the performance gain provided by RAs, accurate channel state information (CSI) is essential for adjusting the orientation/boresight of each antenna. In this letter, we propose an efficient channel estimation scheme for RA communication systems, where the base station (BS) can sequentially and adaptively adjust the orienta…

Visualizing Poloidal Orientation in DNA Minicircles
Tony Lemos, Harold D. Kim
https://arxiv.org/abs/2508.15091 https://arxiv.org/pdf/2508.15091

Visualizing Poloidal Orientation in DNA Minicircles
A short (<150 bp) double-stranded DNA (dsDNA) molecule ligated end-to-end forms a DNA minicircle. Due to sequence-dependent, nonuniform bending energetics, such a minicircle is predicted to adopt a certain inside-out orientation, known as the poloidal orientation. Despite theoretical and computational predictions, experimental evidence for this phenomenon has been lacking. In this study, we introduce a single-molecule approach to visualize the poloidal orientation of DNA minicircles. We constru…

The effect of target orientation on the mean first passage time of a Brownian particle to a small elliptical absorber
Sanchita Chakraborty, Theodore Kolokolnikov, Alan E. Lindsay
https://arxiv.org/abs/2506.17173

The effect of target orientation on the mean first passage time of a Brownian particle to a small elliptical absorber
We develop a high order asymptotic expansion for the mean first passage time (MFPT) of the capture of Brownian particles by a small elliptical trap in a bounded two dimensional region. This new result describes the effect that trap orientation plays on the capture rate and extends existing results that give information only on the role of trap position on the capture rate. Our results are validated against numerical simulations which confirm the accuracy of the asymptotic approximation. In the …

A systematic characterisation of canopy density based on turbulent-structure penetration
Zishen Chen, Ricardo Garc\'ia-Mayoral
https://arxiv.org/abs/2506.19223

A systematic characterisation of canopy density based on turbulent-structure penetration
Turbulent flows over canopies of rigid elements with different geometries and Reynolds numbers (Re) are investigated to identify and characterise different canopy density regimes. In the sparse regime, turbulence penetrates relatively unhindered within the canopy, whereas in the dense regime, the penetration is limited. A common measure of canopy density is the ratio of frontal to bed area, the frontal density $λ_f$. This is effective for canopies with no preferential orientation, but we obser…

Novel cases of diffraction of light from a grating: Theory and experiment
Ninad R. Jetty, Akash Suman, Rajesh B. Khaparde
https://arxiv.org/abs/2508.15970 https://

Novel cases of diffraction of light from a grating: Theory and experiment
A popular pedagogical approach for introducing diffraction is to assume normal incidence of light on a single slit or a plane transmission grating. Interesting cases of diffraction from a grating at orientations other than normal incidence remain largely unexplored. In this article, we report our study of these unexplored cases, which was taken up as an undergraduate student project. We define various cases of orientation of the grating and use the Fresnel-Kirchhoff formula to arrive at the dif…

Wavelet-based Global Orientation and Surface Reconstruction for Point Clouds
Yueji Ma, Yanzun Meng, Dong Xiao, Zuoqiang Shi, Bin Wang
https://arxiv.org/abs/2506.16299

Wavelet-based Global Orientation and Surface Reconstruction for Point Clouds
Unoriented surface reconstruction is an important task in computer graphics and has extensive applications. Based on the compact support of wavelet and orthogonality properties, classic wavelet surface reconstruction achieves good and fast reconstruction. However, this method can only handle oriented points. Despite some improved attempts for unoriented points, such as iWSR, these methods perform poorly on sparse point clouds. To address these shortcomings, we propose a wavelet-based method to …

Facebook renames its Videos tab as the Reels tab and says all videos on its platform will soon be shared as reels, regardless of their length or orientation (Aisha Malik/TechCrunch)
https://techcrunch.com/2025/06/17/face

Facebook announces that all videos on its platform will soon be shared as reels | TechCrunch
Facebook announced on Tuesday that all videos on its platform will soon be shared as reels, regardless of their length or orientation.

Analysis of shape and angular orientation parameters of velocity-dependent dark matter annihilation signals in Galactic Centers for FIRE simulations
Daniel McKeown
https://arxiv.org/abs/2506.16583

Analysis of shape and angular orientation parameters of velocity-dependent dark matter annihilation signals in Galactic Centers for FIRE simulations
We use FIRE-2 zoom cosmological simulations of Milky Way size galaxy halos to characterize the shape of the J-factor emission signal on the sky. We find that, at a fixed dJ/dΩ contour,the shape is well-fit by an ellipse, with semi-major axis Rmajor and semi-minor axis Rminor measured in degrees on the sky. We use least squares fitting to fit ellipses to the J-factor emission, viewed from the solar location. The ratio of minor to major axes (Rminor/Rmajor) allows us to characterize the shape of…

Assessment of the Earth orientation parameter accuracy from concurrent VLBI observations
Leonid Petrov, Christian Ploetz, Matthias Schartner
https://arxiv.org/abs/2506.15859

Assessment of the Earth orientation parameter accuracy from concurrent VLBI observations
We have assessed accuracy of estimates of Earth orientation parameters (EOP) determined from several very long baseline interferometry (VLBI) observing programs that ran concurrently at different networks. We consider that the root mean square of differences in EOP estimates derived from concurrent observations is a reliable measure of accuracy. We confirmed that formal errors based on the assumption that the noise in observables is uncorrelated are close to useless. We found no evidence that a…

one of the great leaders of the Internets!
KUMBAYA.18 FEBRUARY 05
#airbag

Facebook renames its Videos tab as the Reels tab and says all videos on its platform will soon be shared as reels, regardless of their length or orientation (Aisha Malik/TechCrunch)
https://techcrunch.com/2025/06/17/face

Facebook announces that all videos on its platform will soon be shared as reels | TechCrunch
Facebook announced on Tuesday that all videos on its platform will soon be shared as reels, regardless of their length or orientation.

RotBench: Evaluating Multimodal Large Language Models on Identifying Image Rotation
Tianyi Niu, Jaemin Cho, Elias Stengel-Eskin, Mohit Bansal
https://arxiv.org/abs/2508.13968 ht…

RotBench: Evaluating Multimodal Large Language Models on Identifying Image Rotation
We investigate to what extent Multimodal Large Language Models (MLLMs) can accurately identify the orientation of input images rotated 0°, 90°, 180°, and 270°. This task demands robust visual reasoning capabilities to detect rotational cues and contextualize spatial relationships within images, regardless of their orientation. To evaluate MLLMs on these abilities, we introduce RotBench -- a 350-image manually-filtered benchmark comprising lifestyle, portrait, and landscape images. Despite t…

Validate the bright Gaia celestial reference frame with new VLBI astrometry of radio stars
Jingdong Zhang, Bo Zhang, Shuangjing Xu, Xiaofeng Mai
https://arxiv.org/abs/2506.18758

Validate the bright Gaia celestial reference frame with new VLBI astrometry of radio stars
There exist inconsistencies between the bright and faint Gaia Celestial Reference Frame 3 (Gaia-CRF3), which manifests as a systematic rotation and needs to be independently estimated then corrected in future data releases. We collected 64 radio stars with VLBI astrometry, of which 16 have new VLBI observations with reference epochs close to Gaia. We estimated the orientation and spin biases of the bright Gaia-CRF3 by comparing VLBI radio star astrometry with their Gaia DR3 counterparts. We als…

Tractable Graph Structures in EFX Orientation
V\'aclav Bla\v{z}ej, Sushmita Gupta, M. S. Ramanujan, Peter Strulo
https://arxiv.org/abs/2506.15379 https…

Tractable Graph Structures in EFX Orientation
Since its introduction, envy-freeness up to any good (EFX) has become a fundamental solution concept in fair division of indivisible goods. Its existence remains elusive -- even for four agents with additive utility functions, it is unknown whether an EFX allocation always exists. Unsurprisingly, restricted settings to delineate tractable and intractable cases have been explored. Christadolou, Fiat et al.[EC'23] introduced the notion of EFX-orientation, where the agents form the vertices of a g…

Orientation dependent anomalous Hall and spin Hall currents at the junctions of altermagnets with $p$-wave magnets
Sachchidanand Das, Abhiram Soori
https://arxiv.org/abs/2508.15723

Orientation dependent anomalous Hall and spin Hall currents at the junctions of altermagnets with $p$-wave magnets
We study charge and spin transport across a junction between an altermagnet (AM) and a $p$-wave magnet (PM) using a continuum model with boundary conditions tailored to the spin-split band structures of the two materials. Remarkably, although neither AM nor PM is spin-polarized, we find that the junction supports finite spin currents both longitudinally and transversely. We compute the longitudinal and transverse charge and spin conductivities as functions of the crystallographic orientations a…

Using stochastic thermodynamics with internal variables to capture orientational spreading in cell populations undergoing cyclic stretch
Rohan Abeyaratne, Sanjay Dharmaravan, Giuseppe Saccomandi, Giuseppe Tomassetti
https://arxiv.org/abs/2507.15694

Using stochastic thermodynamics with internal variables to capture orientational spreading in cell populations undergoing cyclic stretch
We revisit the modeling framework introduced in [N. Loy and L. Preziosi: Bull. Math. Bio., 85, 2023] to describe the dynamics of cell orientation under cyclic stretch. We propose a reformulation based on the principles of Stochastic Thermodynamics with Internal Variables introduced in [T. Leadbetter, P. Purohit, and C. Reina: PNAS Nexus, 2, 2023]. This approach allows us to describe not only the evolution of the orientation distribution, but also the observed spreading phenomenon. The insight p…

Multiscale Analysis of a Kinetic Model of Confined Suspensions of Self-Propelled Rods
Leonid Berlyand, Spencer Dang, Pierre-Emmanuel Jabin, Mykhailo Potomkin
https://arxiv.org/abs/2508.16003

Multiscale Analysis of a Kinetic Model of Confined Suspensions of Self-Propelled Rods
The behavior of active matter under confinement poses significant challenges due to the intricate coupling between dynamics near boundaries and those in the bulk. A defining feature of active matter systems is that a substantial portion of their dynamics takes place near confining boundaries. In our previous work, we developed a kinetic framework that enables direct computation of the probability distribution functions for both the position and orientation of active rods. A distinguishing aspec…

Steering chiral active Brownian motion via stochastic position-orientation resetting
Amir Shee
https://arxiv.org/abs/2508.12223 https://arxiv.org/pdf/2508.…

Steering chiral active Brownian motion via stochastic position-orientation resetting
Guiding active motion is important for targeted delivery, sensing, and search tasks. Many active systems exhibit circular swimming, ubiquitous in chemical, physical, and biological systems, that biases motion and reduces transport efficiency. We show that stochastic position-orientation resetting can overcome these limitations in two-dimensional chiral active Brownian particles by interrupting circular motion, resulting in tunable dynamics. When resets are infrequent compared to chiral rotation…

Fourier Plane Tomographic Spectroscopy Reveals Orientation-Dependent Multipolar Plasmon Modes in Micrometer-Scale Janus Particles
Felix H. Patzschke, Frank Cichos
https://arxiv.org/abs/2507.15760

Fourier Plane Tomographic Spectroscopy Reveals Orientation-Dependent Multipolar Plasmon Modes in Micrometer-Scale Janus Particles
Plasmonic Janus particles, comprising dielectric cores with thin metallic caps, exhibit complex optical properties due to their asymmetric structure. Despite applications in active matter research, their orientation-dependent scattering properties remain largely unexplored. We introduce Fourier plane tomographic spectroscopy for simultaneous four-dimensional characterization of scattering from individual micrometer-scale particles across wavelength, incident angle, scattering angle, and polariz…

Antimagic labelings of a complete graph
Dr A. N. Bhavale
https://arxiv.org/abs/2506.15221 https://arxiv.org/pdf/2506.15221

Antimagic labelings of a complete graph
In $1990$, Hartsfield and Ringel introduced antimagic graphs. Hartsfield and Ringel conjectured that every connected graph (and in particular, a tree) except $K_2$ is antimagic. In $2010$, Hefetz et al.\ raised two questions: Is every orientation of any simple connected undirected graph antimagic? and Given any undirected graph $G$, does there exist an orientation of $G$ which is antimagic? They call such an orientation an {\it antimagic orientation} of $G$. Recently, Bhavale provided an edge l…

Structure-preserving scheme for 1D KWC system
Makoto Okumura, Shodai Kubota, Ken Shirakawa
https://arxiv.org/abs/2506.16963 https://a…

Structure-preserving scheme for 1D KWC system
In this paper, we consider a system of one-dimensional parabolic PDEs, known as the KWC system, as a phase-field model for grain boundary motion. A key feature of this system is that the equation for the crystalline orientation angle is described as a quasilinear diffusion equation with variable mobility. The goal of this paper is to establish a structure-preserving numerical scheme for the system, focusing on two main structural properties: $\sharp\,1)$ range preservation; and $\sharp\,2)$ ene…

Orientation of galaxy spins relative to filaments of the large-scale structure of the Universe
A. V. Antipova, D. I. Makarov, N. Libeskind, E. Tempel
https://arxiv.org/abs/2507.07334

Orientation of galaxy spins relative to filaments of the large-scale structure of the Universe
The theory of galaxy formation posits a clear correlation between the spin of galaxies and the orientation of the elements of the large-scale structure of the Universe, particularly cosmic filaments. A substantial number of observational and modelling studies have been undertaken with the aim of identifying the dependence of spin orientation on the components of the large-scale structure. However, the findings of these studies remain contradictory. In this paper, we present an analysis of the o…

Fabrication of oriented NV center arrays in diamond via femtosecond laser writing and reorientation
Kai Klink, Andrew Raj Kirkpatrick, Yukihiro Tadokoro, Jonas Nils Becker, Shannon Singer Nicley
https://arxiv.org/abs/2507.14047

Fabrication of oriented NV center arrays in diamond via femtosecond laser writing and reorientation
Nitrogen-vacancy (NV) centers in diamond are widely recognized as highly promising solid-state quantum sensors due to their long room temperature coherence times and atomic-scale size, which enable exceptional sensitivity and nanoscale spatial resolution under ambient conditions. Ultrafast laser writing has demonstrated the deterministic spatial control of individual NV$^-$ centers, however, the resulting random orientation of the defect axis limits the magnetic field sensitivity and signal con…

Covering instability for the existence of positive scalar curvature metrics
Chao Li, Boyu Zhang
https://arxiv.org/abs/2506.13885 https://

Covering instability for the existence of positive scalar curvature metrics
We show that a closed non-orientable $3$-manifold admits a positive scalar curvature metric if and only if its orientation double cover does; however, for each $4\le n\le 7$, there exist infinitely many non-homeomorphic smooth non-orientable $n$--manifolds such that each of them does not admit any Riemannian metric with positive scalar curvature, but its orientation double cover does. These examples were first introduced by Alpert--Balitskiy--Guth in the study of Urysohn widths. To prove the …

The Chirality Trinity: Chirality, Chirality Prime and Time Chirality
Sang-Wook Cheong, Fei-Ting Huang
https://arxiv.org/abs/2507.14168 https://

The Chirality Trinity: Chirality, Chirality Prime and Time Chirality
The flow of time moves in one direction in any spatial position and orientation in this universe. Chiral objects, which lack mirror symmetry, retain their chirality regardless of their position or orientation. Despite being seemingly independent, time and chirality share common features such as universality -- applying to 'any position and orientation' -- and a binary nature, such as forward/backward time flow versus left/right chirality. We introduce the concept of Time Chirality and discuss t…

Optimal Parallel Algorithms for Convex Hulls in 2D and 3D under Noisy Primitive Operations
Michael T. Goodrich, Vinesh Sridhar
https://arxiv.org/abs/2506.17507

Optimal Parallel Algorithms for Convex Hulls in 2D and 3D under Noisy Primitive Operations
In the noisy primitives model, each primitive comparison performed by an algorithm, e.g., testing whether one value is greater than another, returns the incorrect answer with random, independent probability p < 1/2 and otherwise returns a correct answer. This model was first applied in the context of sorting and searching, and recent work by Eppstein, Goodrich, and Sridhar extends this model to sequential algorithms involving geometric primitives such as orientation and sidedness tests. However…

A Non-Local Orientation Field Phase-Field Model for Misorientation- and Inclination- Dependent Grain Boundaries
Xiao Han, Axel van de Walle
https://arxiv.org/abs/2508.01688 http…

A Non-Local Orientation Field Phase-Field Model for Misorientation- and Inclination- Dependent Grain Boundaries
We propose to incorporate grain boundary (GB) anisotropy in phase-field modeling by extending the standard partial differential equations formulation to include a non-local functional of an orientation field. Regardless of the number of grains in the simulation, the model uses a single orientation field and incorporates grain misorientation and inclination information obtained from sampling the orientation field at optimized locations in the vicinity of the grain boundary. The formalism enables…

The free propagator of strongly anisotropic systems with free surfaces
M. A. Shpot
https://arxiv.org/abs/2506.17595 https://arxiv.org…

The free propagator of strongly anisotropic systems with free surfaces
A brief overview of fluctuation-induced forces in statistical systems with film geometry at the critical point and the calculation of Casimir amplitudes, which characterize these forces quantitatively, is presented. Particular attention is paid to the special features of strongly anisotropic $m$-axis systems at the Lifshitz point, specifically, in the case of a "$perpendicular$" orientation of surfaces with free boundary conditions. Beyond the simplest one-loop approximation, calculations of Ca…

A Specialized Simplex Algorithm for Budget-Constrained Total Variation-Regularized Problems
Dominic Yang
https://arxiv.org/abs/2507.13493 https://

A Specialized Simplex Algorithm for Budget-Constrained Total Variation-Regularized Problems
We consider a class of linear programs on graphs with total variation regularization and a budgetary constraint. For these programs, we give a characterization of basic solutions in terms of rooted spanning forests with orientation on the underlying graph. This leads to an interpretation of the simplex method in terms of simple graph operations on these underlying forests. We exploit this structure to produce an accelerated simplex method and empirically show that such improvements can lead to …

Rule-based Key-Point Extraction for MR-Guided Biomechanical Digital Twins of the Spine
Robert Graf, Tanja Lerchl, Kati Nispel, Hendrik M\"oller, Matan Atad, Julian McGinnis, Julius Maria Watrinet, Johannes Paetzold, Daniel Rueckert, Jan S. Kirschke
https://arxiv.org/abs/2508.14708

Rule-based Key-Point Extraction for MR-Guided Biomechanical Digital Twins of the Spine
Digital twins offer a powerful framework for subject-specific simulation and clinical decision support, yet their development often hinges on accurate, individualized anatomical modeling. In this work, we present a rule-based approach for subpixel-accurate key-point extraction from MRI, adapted from prior CT-based methods. Our approach incorporates robust image alignment and vertebra-specific orientation estimation to generate anatomically meaningful landmarks that serve as boundary conditions …

Determining the orientation of radio antennas at the South Pole using Galactic noise measurements
Paras Koundal (for the IceCube Collaboration), Valeria Torres-Gomez (for the IceCube Collaboration)
https://arxiv.org/abs/2507.07224

Determining the orientation of radio antennas at the South Pole using Galactic noise measurements
The IceCube Neutrino Observatory is a multi-messenger observatory at the South Pole. As preparation for an enhancement of its surface array, IceTop, a prototype station consisting of elevated scintillation panels and radio antennas has been installed and is operating since 2020. The radio antennas detect emissions from cosmic-ray-induced air showers, and their precise orientation is essential for an accurate reconstruction of the air-shower properties. This work presents a novel method to deter…

I’m so proud of my little brother.
I just spoke to him in his dorm room at a top 30 college here in the US, he just arrived for freshman orientation.
He got in on a full ride - tuition, housing, food, books, travel, stipend for daily expenses. Won a competitive scholarship to do so.
More than that, he’s had a tougher road than most to get there:
- he had to suddenly move away from Manila, Philippines (where he grew up) in middle school because of COVID restrictions that didn’t let kids go outside (2020)
- then, just as he adjusted to school and a different language in our home country, Ukraine, Russia invaded (2022)
- he stayed in Greece for a month while I was calling our congressional representative here in NY and negotiating with the US embassy to get them a visa ASAP to enter the US and be with me and my husband. There were no paths for Ukrainian refugees yet, we just wanted them with us temporarily for a few months to figure out what options they even had next.
- he had to wait, not going to school, with no clue where they’d move next, until TPS became available to Ukrainians and they got to stay here in the US
- then he had to continue high school in yet another system, yet another country, amidst news of bombings and destruction back home
- my mother wasn’t allowed to work for months while their documents were pending, so we had to raise money with a public GoFundMe campaign and my husband and I maxed out our credit cards to help them get by
- they shared a one-room cottage for the first year, graciously hosted for free by an elderly local couple
- he saw a therapist who also graciously took him in for free while they didn’t have insurance
- he had to graduate high school amidst news of other immigrant students getting arrested, detained, and deported at their own graduations around the country
- he wasn’t sure if he would even make it to college as this administration publicly considered canceling TPS for Ukrainians and cutting off their pathway to maintaining legal status.
We don’t know what tomorrow holds. But he’s there. He’s on campus. He got to go to college.
I love him so much.

seeing this makes me think there's a nonzero chance america's mainstream christianity literally melds and intersects with its business events in the future. book the killers as a walmart worship band till mr. brightside's as singable as the most enduring hymns.

So apparently I have a photo whose orientation is stored in EXIF metadata. When I upload it to pol.social, #Mastodon rotates it correctly. When I upload it to treehouse.systems, it comes out wrong.

R&D on a high-performance electromagnetic calorimeter based on oriented crystalline scintillators
M. Soldani, N. Argiolas, L. Bandiera, V. Baryshevsky, L. Bomben, C. Brizzolari, N. Canale, S. Carsi, S. Cutini, F. Dav\`i, D. De Salvador, A. Gianoli, V. Guidi, V. Haurylavets, M. Korjik, G. Lezzani, A. Lobko, F. Longo, L. Malagutti, S. Mangiacavalli, V. Mascagna, A. Mazzolari, L. Montalto, P. Monti-Guarnieri, M. Moulson, R. Negrello, G. Patern\`o, L. Perna, C. Petroselli, M. Prest, D.…

R&D on a high-performance electromagnetic calorimeter based on oriented crystalline scintillators
Although inorganic scintillators are widely used in the design of electromagnetic calorimeters for high-energy physics and astrophysics, their crystalline nature and, hence, their lattice orientation are generally neglected in the detector design. However, in general, the features of the electromagnetic field experienced by the particles impinging on a crystal at a small angle with respect to a lattice axis affect their interaction mechanisms. In particular, in case of electrons/photons of $\ma…

Coriolis force acting on near-surface horizontal flows during simulations of flux emergence produces a tilt angle consistent with Joy's law on the Sun
William Roland-Batty, Hannah Schunker, Robert H. Cameron, Damien Przybylski, Laurent Gizon, David I. Pontin
https://arxiv.org/abs/2506.15935

Coriolis force acting on near-surface horizontal flows during simulations of flux emergence produces a tilt angle consistent with Joy's law on the Sun
Joy's law describes the tilt of bipolar active regions on the Sun away from an east-west orientation, where the flux of the polarity concentrated at the prograde side tends to be closer to the equator than the polarity on the retrograde side. Joy's law is attributed to the Coriolis force because of the observed increase in tilt angle at higher latitudes. This tilt plays a crucial role in some solar dynamo models. Our goal is to model the effects of the Coriolis force on a flux tube as it rises …

Controlling Skyrmion Lattice Orientation with Local Magnetic Field Gradients
Duc Minh Tran, Edoardo Mangini, Elizabeth M. Jefremovas, Fabian Kammerbauer, Dennis Meier, Robert Fr\"omter, Mathias Kl\"aui
https://arxiv.org/abs/2508.14771

Controlling Skyrmion Lattice Orientation with Local Magnetic Field Gradients
Precise control over the formation and arrangement of magnetic skyrmion lattices is essential for understanding their emergent behavior and advancing their integration into spintronic and magnonic devices. We report on a simple and minimally invasive technique to nucleate and manipulate skyrmion lattices in soft magnetic CoFeB using single-pass magnetic force microscopy (MFM). By tuning the scan-line spacing to match the intrinsic stripe domain periodicity, the stray field gradient from the MFM…

Dehn surgery functions are never injective
Kyle Hayden, Lisa Piccirillo, Laura Wakelin
https://arxiv.org/abs/2508.13369 https://arxiv.org/pdf/2508.13369

Dehn surgery functions are never injective
We prove that, for each fixed rational number $p/q \in \mathbb{Q}$, there exists a pair of distinct knots whose $p/q$-surgeries are orientation-preservingly homeomorphic. This confirms a 1978 conjecture of Gordon.

6-DoF Object Tracking with Event-based Optical Flow and Frames
Zhichao Li, Arren Glover, Chiara Bartolozzi, Lorenzo Natale
https://arxiv.org/abs/2508.14776 https://

6-DoF Object Tracking with Event-based Optical Flow and Frames
Tracking the position and orientation of objects in space (i.e., in 6-DoF) in real time is a fundamental problem in robotics for environment interaction. It becomes more challenging when objects move at high-speed due to frame rate limitations in conventional cameras and motion blur. Event cameras are characterized by high temporal resolution, low latency and high dynamic range, that can potentially overcome the impacts of motion blur. Traditional RGB cameras provide rich visual information tha…

Cardiotensor: A Python Library for Orientation Analysis and Tractography in 3D Cardiac Imaging
Joseph Brunet, Lisa Chestnutt, Matthieu Chourrout, Hector Dejea, Vaishnavi Sabarigirivasan, Peter D. Lee, Andrew C. Cook
https://arxiv.org/abs/2508.07476

Cardiotensor: A Python Library for Orientation Analysis and Tractography in 3D Cardiac Imaging
Understanding the architecture of the human heart requires analysis of its microstructural organization across scales. With the advent of high-resolution imaging techniques such as synchrotron-based tomography, it has become possible to visualize entire hearts at micron-scale resolution. However, translating these large, complex volumetric datasets into interpretable, quantitative descriptors of cardiac organization remains a major challenge. Here we present cardiotensor, an open-source Python …

Structural Parameters for Steiner Orientation
Tesshu Hanaka, Michael Lampis, Nikolaos Melissinos, Edouard Nemery, Hirotaka Ono, Manolis Vasilakis
https://arxiv.org/abs/2507.21445

Structural Parameters for Steiner Orientation
We consider the \textsc{Steiner Orientation} problem, where we are given as input a mixed graph $G=(V,E,A)$ and a set of $k$ demand pairs $(s_i,t_i)$, $i\in[k]$. The goal is to orient the undirected edges of $G$ in a way that the resulting directed graph has a directed path from $s_i$ to $t_i$ for all $i\in[k]$. We adopt the point of view of structural parameterized complexity and investigate the complexity of \textsc{Steiner Orientation} for standard measures, such as treewidth. Our results in…

Invariant Extended Kalman Filter for Autonomous Surface Vessels with Partial Orientation Measurements
Derek Benham, Easton Potokar, Joshua G. Mangelson
https://arxiv.org/abs/2506.10850

Invariant Extended Kalman Filter for Autonomous Surface Vessels with Partial Orientation Measurements
Autonomous surface vessels (ASVs) are increasingly vital for marine science, offering robust platforms for underwater mapping and inspection. Accurate state estimation, particularly of vehicle pose, is paramount for precise seafloor mapping, as even small surface deviations can have significant consequences when sensing the seafloor below. To address this challenge, we propose an Invariant Extended Kalman Filter (InEKF) framework designed to integrate partial orientation measurements. While con…

Optimal alignment of Lorentz orientation and generalization to matrix Lie groups
Congzhou M Sha
https://arxiv.org/abs/2506.14994 https://

Optimal alignment of Lorentz orientation and generalization to matrix Lie groups
There exist elegant methods of aligning point clouds in $\mathbb R^3$. Unfortunately, these methods rely on the positive definite property of the Euclidean metric, and do not easily extend to the indefinite Minkowski metric. In this paper, we propose two solutions to the following problem: given inertial reference frames $A$ and $B$, and given (possibly noisy) measurements of a set of 4-vectors $\{v_i\}$ made in those reference frames with components $\{v_{A,i}\}$ and $\{v_{B,i}\}$, find the op…

Robust Surface-Induced Enhancement of Exciton Transport in Magic-Angle-Oriented Molecular Aggregates
Siwei Wang, Liang-Yan Hsu, Hsing-Ta Chen
https://arxiv.org/abs/2507.13755

Robust Surface-Induced Enhancement of Exciton Transport in Magic-Angle-Oriented Molecular Aggregates
Exciton transport in molecular aggregates with magic-angle orientation is expected to be strongly suppressed due to their negligible dipole-dipole interactions. However, recent reports show that light-matter interactions can significantly enhance exciton transport attributed to the effective long-range coupling mediated by the photonic fields. To elucidate their interplay, we employ the macroscopic quantum electrodynamics framework to simulate exciton transport within a chromophore array arrang…

Wife put some of those long skinny ice pop things in the freezer (in a vertical orientation between the wires of the shelf) since it was supposed to be hot.
This morning we found none of them had frozen. After a quick sanity check to make sure the freezer was working and everything else was cold, we grabbed one and inspected it. After shaking it rapidly froze in front of us, with fine grained crystals expanding out in all directions from many nucleation sites (probably bubbles from sha…

Oriented diameter of graphs with given domination number
Xiaolin Wang, Yaojun Chen
https://arxiv.org/abs/2506.15997 https://arxiv.org…

Oriented diameter of graphs with given domination number
Let $G$ be a connected bridgeless graph with domination number $γ$. The oriented diameter (strong diameter) of $G$ is the smallest integer $d$ for which $G$ admits a strong orientation with diameter (strong diameter) $d$. Kurz and Lätsch (2012) conjectured the oriented diameter of $G$ is at most $\lceil \frac{7γ+1}{2}\rceil$ and the bound is sharp. In this paper, we confirm the conjecture by induction on $γ$ through contracting an unavoidable alternative subgraph, which holds potential for …

This https://arxiv.org/abs/1503.03852 has been replaced.
link: https://scholar.google.com/scholar?q=a

On groups of diffeomorphisms of the interval with finitely many fixed points
In [13], it is proved that any subgroup of $\mathrm{Diff}_{+}^{ω}(I)$ (the group of orientation preserving analytic diffeomorphisms of the interval) is either metaabelian or does not satisfy a law. A stronger question is asked whether or not the Girth Alternative holds for subgroups of $\mathrm{Diff}_{+}^{ω}(I)$. In this paper, we answer this question affirmatively for even a larger class of groups of orientation preserving diffeomorphisms of the interval where every non-identity element has …

It was obvious, if you thought about it, that the second Trump administration would be hostile to science and intellectual endeavor in general.
After all, look at some key elements of the MAGA coalition.
Fossil fuel interests don’t want anyone studying climate change.
Conspiracy theorists like Alex Jones make much of their money selling quack medical remedies, which makes them hostile to conventional medicine.
(And partisan orientation became a key factor determinin…

Nobody Expected the MAGA Inquisition
But it’s here, and will destroy American science

Spectral statistics of preferred orientation quantum graphs
Ram Band, Pavel Exner, Divya Goel, Aviya Strauss
https://arxiv.org/abs/2508.04869 https://arxiv…

Spectral statistics of preferred orientation quantum graphs
We study the spectral statistics of quantum (metric) graphs whose vertices are equipped with preferred orientation vertex conditions. When comparing their spectral statistics to those predicted by suitable random matrix theory ensembles, one encounters some deviations. We point out these discrepancies and demonstrate that they occur in various graphs and even for Neumann-Kirchhoff vertex conditions, which was overlooked so far. Detailed explanations and computations are provided for this phenom…

@… I just came across this and thought I’d check with you to see if it’s accurate, instead of just shitposting it like I usually do with stuff.

PII Jailbreaking in LLMs via Activation Steering Reveals Personal Information Leakage
Krishna Kanth Nakka, Xue Jiang, Xuebing Zhou
https://arxiv.org/abs/2507.02332

PII Jailbreaking in LLMs via Activation Steering Reveals Personal Information Leakage
This paper investigates privacy jailbreaking in LLMs via steering, focusing on whether manipulating activations can bypass LLM alignment and alter response behaviors to privacy related queries (e.g., a certain public figure's sexual orientation). We begin by identifying attention heads predictive of refusal behavior for private attributes (e.g., sexual orientation) using lightweight linear probes trained with privacy evaluator labels. Next, we steer the activations of a small subset of these at…

Bose-Einstein Condensates in a Synthetic Magnetic Field with Tunable Orientation
Fengtao Pang, Huaxin He, Yongping Zhang, Chunlei Qu
https://arxiv.org/abs/2506.09339

Bose-Einstein Condensates in a Synthetic Magnetic Field with Tunable Orientation
We systematically investigate the ground state and dynamics of spinor Bose-Einstein condensates subject to a position-dependent detuning. This detuning induces three related quantities-a synthetic magnetic field, an angular velocity, and an angular momentum-which, due to trap anisotropy, may point in different directions. When the dipole frequencies along the three symmetric axes of the harmonic trap are degenerate, the dipole motion can decompose into two coupled transverse modes in the plane …

Optimization of Liquid Lens-based Imaging Receiver for MIMO VLC Systems
Kapila W. S. Palitharathna, Christodoulos Skouroumounis, Ioannis Krikidis
https://arxiv.org/abs/2508.05204

Optimization of Liquid Lens-based Imaging Receiver for MIMO VLC Systems
In this paper, a liquid lens-based imaging receiver is proposed for multiple-input multiple-output (MIMO) visible light communication (VLC) systems. By dynamically adjusting the focal length and orientation angles of the liquid lens, the spatial correlation between MIMO channel gains is reduced, leading to enhanced bit-error rate (BER) performance. Unlike static lenses, liquid lenses offer adaptability in dynamic conditions, including user mobility and random receiver orientation. An accurate m…

"When we say monumental, you had better believe it; the 500 pages of this volume, laid out with astonishing detail (and a very small font size) summarize the history and evolution of computers from 1945 to 1990. Throughout these pages, Waldrop reveals that the backbone, the axis, the arrow, the orientation, the mastermind of all that history was none other than Lick himself: he was the incarnation of the phrase “being at the right place at the right time”."

J. C. R. Licklider & M. Mitchell Waldrop
The writings of Jorge Luis Borges twist our perception of time and space. In between articles about Shaw, Chesterton, Wilde, and Coleridge, his 1952 book "Otras Inquisiciones" included an unexpected gem: a short story called "El Tiempo y J. W. Dunne". The question is, who was this John William Dunne and what does he have to do with time? Well, his name might be forgotten by contemporary audiences, but Dunne was the author of one of the biggest bestsellers of the first half of the twentieth cent…

Full-field rheo-optical analysis of wormlike and networked micellar structures under uniaxial extensional flow
Masakazu Muto, Naoki Kako, Tatsuya Yoshino, Shinji Tamano
https://arxiv.org/abs/2507.15562

Full-field rheo-optical analysis of wormlike and networked micellar structures under uniaxial extensional flow
The present study proposes a novel full-field extensional rheo-optical technique to investigate the relationship between the rheological properties and internal structural deformation of complex fluids under uniaxial extensional flow. Macroscopic viscoelasticity from rheological measurements and microscopic birefringence from optical measurements are integrated to evaluate the microstructural deformation and orientation of the fluids under extensional stress. The proposed technique integrates a…

Hours of hiking at high elevation is the best complement/remedy for hours of coding... Last Saturday we were on the mountain for 9 hours (21km hike), and here's a short POV video from near the highest point, near the pass into Rappenalptal, 900m above the valley... It was a beautiful varied path through many different terrains with some exposed sections and grand vistas, even though the last part of the 1400m descent wasn't anything fun...
Also, between 20 and 30 seconds, the …

Crosslisted article(s) found for cs.MM. https://arxiv.org/list/cs.MM/new
[1/1]:
- Topological Structure Description for Artcode Detection Using the Shape of Orientation Histogram
Liming Xu, Dave Towey, Andrew P. French, Steve Benford

$c_\text{eff}$ from Surgery and Modularity
Shimal Harichurn, Mrunmay Jagadale, Dmitry Noshchenko, Davide Passaro
https://arxiv.org/abs/2508.10087 https://a…

$c_\text{eff}$ from Surgery and Modularity
$\widehat{Z}$ invariants, rigorously defined for negative definite plumbed 3-manifolds, are expected--on physical grounds--to exist for every closed, oriented 3-manifold. Several prescriptions have been proposed to extend their definition to generic plumbings by reversing the orientation of a negative definite plumbing, thus turning it into a positive definite one. Two existing proposals are relevant for this paper: (i) the regularized $+1/r$-surgery conjecture combined with the false-mock modu…

Spontaneous Spatial Cognition Emerges during Egocentric Video Viewing through Non-invasive BCI
Weichen Dai, Yuxuan Huang, Li Zhu, Dongjun Liu, Yu Zhang, Qibin Zhao, Andrzej Cichocki, Fabio Babiloni, Ke Li, Jianyu Qiu, Gangyong Jia, Wanzeng Kong, Qing Wu
https://arxiv.org/abs/2507.12417

Spontaneous Spatial Cognition Emerges during Egocentric Video Viewing through Non-invasive BCI
Humans possess a remarkable capacity for spatial cognition, allowing for self-localization even in novel or unfamiliar environments. While hippocampal neurons encoding position and orientation are well documented, the large-scale neural dynamics supporting spatial representation, particularly during naturalistic, passive experience, remain poorly understood. Here, we demonstrate for the first time that non-invasive brain-computer interfaces (BCIs) based on electroencephalography (EEG) can decod…

Real-Time Confidence Detection through Facial Expressions and Hand Gestures
Tanjil Hasan Sakib, Samia Jahan Mojumder, Rajan Das Gupta, Md Imrul Hasan Showmick, Md. Yeasin Rahat, Md. Jakir Hossen
https://arxiv.org/abs/2506.09153

Real-Time Confidence Detection through Facial Expressions and Hand Gestures
Real-time face orientation recognition is a cutting-edge technology meant to track and analyze facial movements in virtual environments such as online interviews, remote meetings, and virtual classrooms. As the demand for virtual interactions grows, it becomes increasingly important to measure participant engagement, attention, and overall interaction. This research presents a novel solution that leverages the Media Pipe Face Mesh framework to identify facial landmarks and extract geometric dat…

Replaced article(s) found for math.KT. https://arxiv.org/list/math.KT/new
[1/1]:
- On a complex topological orientation for circle-equivariant K-theory
J Morava

On the orientation of historic Christian churches of Fuerteventura: conciliating tradition, winds and topography
Maria Florencia Muratore, Alejandro Gangui, Maitane Urrutia-Aparicio, Carmelo Cabrera, Juan Antonio Belmonte
https://arxiv.org/abs/2505.18161

On the orientation of historic Christian churches of Fuerteventura: conciliating tradition, winds and topography
We present the results of an analysis of the precise spatial orientation of colonial Christian churches located in the Canary Island of Fuerteventura (Spain). Our sample consists of 48 churches, most built during the period between the Castilian conquest led by the Norman Jean de Béthencourt in the 15th century and the end of the 19th century. We examine whether the standard tradition was followed regarding the orientation of the apses of historic churches eastwards. While most of the religiou…

TinyDEM: Minimal open granular DEM code with sliding, rolling and twisting friction
Roman Vetter
https://arxiv.org/abs/2507.12610 https://

TinyDEM: Minimal open granular DEM code with sliding, rolling and twisting friction
This article introduces TinyDEM, a lightweight implementation of a full-fledged discrete element method (DEM) solver in 3D. Newton's damped equations of motion are solved explicitly for translations and rotations of a polydisperse ensemble of dry, soft, granular spherical particles, using quaternions to represent their orientation in space without gimbal lock. Particle collisions are modeled as inelastic and frictional, including full exchange of torque. With a general particle-mesh collision r…

Replaced article(s) found for cs.CV. https://arxiv.org/list/cs.CV/new
[1/4]:
- Advancing Toward Robust and Scalable Fingerprint Orientation Estimation: From Gradients to Deep L...
Amit Kumar Trivedi, Jasvinder Pal Singh

Measurement of the attractive electrosolvation force between colloidal particles
Sida Wang, Angela Le, Rowan Walker-Gibbons, Madhavi Krishnan
https://arxiv.org/abs/2508.14652 ht…

Measurement of the attractive electrosolvation force between colloidal particles
Direct measurement of the pair interaction potential between electrically like-charged particles in solution reveals a strong and long-ranged attractive force. This counterintuitive attraction has been suggested to arise from the orientation of solvent molecules at the interface between the object and the electrolyte. Here we report measurements of pair interaction potentials between charged microspheres with a range of surface chemistries. We demonstrate that the range of the electrosolvation …

Accurate grain boundary plane distributions for textured microstructures from stereological analysis of orthogonal two-dimensional electron backscatter diffraction orientation maps
Martin Folwarczny, Ao Li, Rushvi Shah, Aaron Chote, Alexandra C. Austin, Yimin Zhu, Gregory S. Rohrer, Michael A. Jackson, Souhardh Kotakadi, Katharina Marquardt
https://

Accurate grain boundary plane distributions for textured microstructures from stereological analysis of orthogonal two-dimensional electron backscatter diffraction orientation maps
We present a method for obtaining qualitatively accurate grain boundary plane distributions (GBPD) for textured microstructures using a stereological calculation applied to two-dimensional electron backscatter diffraction (EBSD) orientation maps. Stereology, applied to 2D EBSD orientation maps, is currently the fastest method of obtaining GBPDs. Existing stereological methods are not directly applicable to textured microstructures because of the biased viewing perspectives for different grain b…

The Surface Orientation Ambiguity for Single Molecules at Dielectric Interfaces
E. Dey, M. Elorza, F. W. Foss, J. J. Gomez Cadenas, B. J. P. Jones
https://arxiv.org/abs/2508.03903

The Surface Orientation Ambiguity for Single Molecules at Dielectric Interfaces
Fluorescent molecules emit light in a dipole radiation pattern that can be used to infer their orientation through defocused fluorescence microscopy. Proper measurement of the orientation requires mathematical modeling of the radiation pattern expected for a dipole in the geometry of interest, and subsequent comparison against experimental data. We point out an ambiguity in common calculations of these patterns that appears to compromise orientation measurements for molecules that are especiall…

On the complexity of constrained reconfiguration and motion planning
Nicolas Bousquet, Remy El Sabeh, Amer E. Mouawad, Naomi Nishimura
https://arxiv.org/abs/2508.13032 https://

On the complexity of constrained reconfiguration and motion planning
Coordinating the motion of multiple agents in constrained environments is a fundamental challenge in robotics, motion planning, and scheduling. A motivating example involves $n$ robotic arms, each represented as a line segment. The objective is to rotate each arm to its vertical orientation, one at a time (clockwise or counterclockwise), without collisions nor rotating any arm more than once. This scenario is an example of the more general $k$-Compatible Ordering problem, where $n$ agents, each…

Homotopy classification of $4$-manifolds with $3$-manifold fundamental group
Jonathan Hillman, Daniel Kasprowski, Mark Powell, Arunima Ray
https://arxiv.org/abs/2508.07504 https…

Homotopy classification of $4$-manifolds with $3$-manifold fundamental group
We give a criterion on a group $π$ and a homomorphism $w \colon π\to C_2$ under which closed $4$-manifolds with fundamental group $π$ and orientation character $w$ are classified up to homotopy equivalence by their quadratic $2$-types. We verify the criterion for a large class of $3$-manifold groups and orientation characters, in particular for the fundamental group $π$ of any closed, orientable $3$-manifold whose finite subgroups are cyclic, provided $w$ vanishes on every element of $π$ o…

Development of Turbulence in Post-shock Regions
Michael M. Foley, Philip Mocz, Blakesley Burkhart, Lars Hernquist, Alyssa Goodman
https://arxiv.org/abs/2508.13291 https://

Development of Turbulence in Post-shock Regions
Supersonic isothermal turbulence is ubiquitous in the interstellar medium. This work presents high-resolution AREPO hydrodynamical simulations of isolated shocks moving through supersonic turbulence to study the development and evolution of turbulence in the pre- and post-shock regions. We find that shocks can amplify turbulent energy in the post-shock region while inducing a preferential orientation for the vorticity. This results in the creation of anisotropic turbulence in the post-shock reg…

It is unclear to what extent Wicab's BrainPort Vision Pro tongue display (sensory substitution device) is still on the market https://www.wicab.com/brainport-vision-pro because there has been very little news about it since around 2019, judging also from their own website. Note that the BrainPor…

Nanoscale Magnetic Resonance Imaging and Control of a Strongly Interacting Dipolar System
Piotr Put, Nathaniel T. Leitao, Christina Spaegele, Haoyang Gao, Oksana Makarova, Bartholomeus Machielse, Hengyun Zhou, Federico Capasso, Leigh S. Martin, Hongkun Park, Mikhail D. Lukin
https://arxiv.org/abs/2506.11920

Nanoscale Magnetic Resonance Imaging and Control of a Strongly Interacting Dipolar System
Magnetic Resonance Imaging (MRI) is a fundamental tool for physical and life sciences, yet its spatial resolution is typically limited to macroscopic scales. Here, we demonstrate nanoscale MRI by combining strong, time-dependent local magnetic field gradients with coherent control of a dense ensemble of electron spins hosted in atom-like defects in diamond. Using this platform, we generate and manipulate nanoscale spin textures - spatially structured patterns of spin orientation - and track the…

MOMAV: A highly symmetrical fully-actuated multirotor drone using optimizing control allocation
Marco Ruggia
https://arxiv.org/abs/2506.08868 https://

MOMAV: A highly symmetrical fully-actuated multirotor drone using optimizing control allocation
MOMAV (Marco's Omnidirectional Micro Aerial Vehicle) is a multirotor drone that is fully actuated, meaning it can control its orientation independently of its position. MOMAV is also highly symmetrical, making its flight efficiency largely unaffected by its current orientation. These characteristics are achieved by a novel drone design where six rotor arms align with the vertices of an octahedron, and where each arm can actively rotate along its long axis. Various standout features of MOMAV are…

Constraining shear modulus of polycrystalline neutron star crust: Hashin-Shtrikman variational approach
Nikita A. Zemlyakov (Ioffe Institute), Andrey I. Chugunov (Ioffe Institute)
https://arxiv.org/abs/2507.12266

Constraining shear modulus of polycrystalline neutron star crust: Hashin-Shtrikman variational approach
The elastic properties of the neutron star crust are thought to play a crucial role in various phenomena of neutron stars (glitches, oscillations, gravitational wave emission) and should be described quantitatively to model these phenomena. The fundamental problem of this description is associated with the polycrystalline nature of the crust: similar to terrestrial materials, the elastic moduli, strictly speaking, depend on the shape and orientation of crystallites, but for the crust, they are …

Alignment behavior of 2D diopsides (d-silicates) under the influence of an AC electric field
Himakshi Mishra, Bruno Ipaves, Raphael Benjamim de Oliveira, Marcelo Lopes Pereira Junior, Raphael Matozo Tromer, e Douglas Soares Galvao, Chandra Shekar Tiwary
https://arxiv.org/abs/2507.13962

Alignment behavior of 2D diopsides (d-silicates) under the influence of an AC electric field
Controlling the alignment of two dimensional (2D) materials is crucial for optimizing their electronic and mechanical properties in next generation devices. This study explores how electric fields can manipulate the orientation of 2D diopside (CaMgSi2O6) flakes, a flexible silicate material, through a phenomenon called flexoelectricity, where applied voltage generates mechanical strain. We exfoliated diopside crystals into ultrathin flakes, placed them on microelectrodes, and used AC electric f…

Image Profile (IMPRO) Fitting of Massive Protostars. I. Method Development and Test Cases of Cepheus A and G35.20-0.74N
Yao-Lun Yang, Jonathan C. Tan, Rub\'en Fedriani, Yichen Zhang
https://arxiv.org/abs/2508.12625

Image Profile (IMPRO) Fitting of Massive Protostars. I. Method Development and Test Cases of Cepheus A and G35.20-0.74N
Massive stars play a critical role in the evolution of galaxies, but their formation remains poorly understood. One challenge is accurate measurement of the physical properties of massive protostars, such as current stellar mass, envelope mass, outflow cavity properties, and system orientation. Spectral energy distribution (SED) fitting is widely-used to test models against observations. The far-infrared SED traces cold dust in envelopes, while the near- and mid-infrared (MIR) probes emission f…

Physics-informed Machine Learning Analysis for Nanoscale Grain Mapping by Synchrotron Laue Microdiffraction
Ka Hung Chan, Xinyue Huang, Nobumichi Tamura, Xian Chen
https://arxiv.org/abs/2506.10937

Physics-informed Machine Learning Analysis for Nanoscale Grain Mapping by Synchrotron Laue Microdiffraction
Understanding the grain morphology, orientation distribution, and crystal structure of nanocrystals is essential for optimizing the mechanical and physical properties of functional materials. Synchrotron X-ray Laue microdiffraction is a powerful technique for characterizing crystal structures and orientation mapping using focused X-rays. However, when grain sizes are smaller than the beam size, mixed peaks in the Laue pattern from neighboring grains limit the resolution of grain morphology mapp…

Dynamic stall of a hydrofoil with tubercles in surface gravity waves
Guillaume Ricard, Gunnar Jacobi, Daniele Fiscaletti, Abel-John Buchner
https://arxiv.org/abs/2508.13329 http…

Dynamic stall of a hydrofoil with tubercles in surface gravity waves
The interaction of an object with an unsteady flow is non-trivial and is still far from being fully understood. When an airfoil or hydrofoil, for example, undergoes time-dependent motion, nonlinear flow phenomena such as dynamic stall can emerge. The present work experimentally investigates the interaction between a hydrofoil and surface gravity waves. The waves impose periodic fluctuations of the velocity magnitude and orientation, causing a steadily translating hydrofoil to be susceptible to …

An adjunction inequality for Real embedded surfaces
David Baraglia
https://arxiv.org/abs/2507.05667 https://arxiv.org/pdf/2507.05667

An adjunction inequality for Real embedded surfaces
A Real structure on a $4$-manifold $X$ is an orientation preserving smooth involution $σ$. We say that an embedded surface $Σ\subset X$ is Real if $σ$ maps $Σ$ to itself orientation reversingly. We prove that a cohomology class $u \in H^2(X ; \mathbb{Z})$ can be represented by a Real embedded surface if and only if $u$ can be lifted to a class in equivariant cohomology $H^2_{\mathbb{Z}_2}(X ; \mathbb{Z}_-)$. We prove that if the Real Seiberg--Witten invariants of $X$ are non-zero then the g…

Measurement of the photosphere oblateness of $\gamma$ Cassiopeiae via Stellar Intensity Interferometry with the VERITAS Observatory
A. Archer, J. P. Aufdenberg, P. Bangale, J. T. Bartkoske, W. Benbow, J. H. Buckley, Y. Chen, N. B. Y. Chin, J. L. Christiansen, A. J. Chromey, A. Duerr, M. Escobar Godoy, S. Feldman, Q. Feng, S. Filbert, L. Fortson, A. Furniss, W. Hanlon, O. Hervet, C. E. Hinrichs, J. Holder, Z. Hughes, T. B. Humensky, W. Jin, M. N. Johnson, M. Kertzman, M. Kherlakian, D. …

Measurement of the photosphere oblateness of $γ$ Cassiopeiae via Stellar Intensity Interferometry with the VERITAS Observatory
We use the stellar intensity interferometry system implemented with the Very Energetic Radiation Imaging Telescope Array System (VERITAS) at Fred Lawrence Whipple Observatory (FLWO) as a light collector to obtain measurements of the rapid rotator star $γ$ Cassiopeiae, at a wavelength of 416 nm. Using data from baselines sampling different position angles, we extract the size, oblateness, and projected orientation of the photosphere. Fitting the data with a uniform ellipse model yields a minor-…

Defect Interactions Through Periodic Boundaries in Two-Dimensional $p$-atics
Cody D. Schimming
https://arxiv.org/abs/2507.12597 https://

Defect Interactions Through Periodic Boundaries in Two-Dimensional $p$-atics
Periodic boundary conditions are a common tool used to emulate effectively infinite domains. However, two-dimensional periodic domains are topologically distinct from the infinite plane, eliciting the question: How do periodic boundaries affect systems with topological properties themselves? In this work, I derive an analytical expression for the orientation fields of two-dimensional $p$-atic liquid crystals, systems with $p$-fold rotational symmetry, with topological defects in a flat domain s…

Overtone Rabi oscillation of optically polarized triplet electron spins and nuclear hyperpolarization in powder
Koichiro Miyanishi, Takuya F. Segawa, Makoto Negoro, Akinori Kagawa, Kazuyuki Takeda
https://arxiv.org/abs/2506.10498

Overtone Rabi oscillation of optically polarized triplet electron spins and nuclear hyperpolarization in powder
We report coherent overtone Rabi oscillations of optically-polarized triplet electron spins and nuclear hyperpolarization in powder samples at room temperature. The strong orientation dependence through the zero-field splitting (ZFS) interaction in the single-quantum transition is overcome by coherently driving the significantly narrower overtone transition. Analytical formulas for the overtone lineshape and nutation functions for axially symmetric ZFS interactions are derived. Overtone Rabi os…

Switches in orientation coding by mouse primary visual cortex neurons depend on stimulus predictability #neuroscience

Straightforward Method to Orient Black Phosphorus from Bulk to Thin Layers using a Standard Green Laser
Etienne Carr\'e, Fr\'ed\'eric Fossard, Jean-S\'ebastien M\'erot, Denis Boivin, Nicolas Horezan, Victor Zatko, Florian Godel, Bruno Dlubak, Marie-Blandine Martin, Pierre Seneor, Etienne Gaufres, Julien Barjon, Annick Loiseau, Ingrid Stenger

Straightforward Method to Orient Black Phosphorus from Bulk to Thin Layers using a Standard Green Laser
The crystallographic orientation of anisotropic 2D materials plays a crucial role in their physical properties and device performance. However, standard orientation techniques such as transmission electron microscopy (TEM) or X-ray diffraction (XRD) can be complex and less accessible for routine characterization. In this study, we investigate the orientation of black phosphorus (BP) from bulk crystals to thin layers using angle-resolved polarized Raman spectroscopy (ARPRS) with a single-wavelen…

Parallel Alignments between Magnetic Fields and Dense Structures in the Central Molecular Zone
Xing Pan, Qizhou Zhang, Keping Qiu, Dylan Pare, David Chuss, Natalie Butterfield, Robin Tress, Mattia Sormani, Yuping Tang, Steven Longmore, Thushara Pillai
https://arxiv.org/abs/2508.04599

Parallel Alignments between Magnetic Fields and Dense Structures in the Central Molecular Zone
The recent Far-Infrared Polarimetric Large-Area Central Molecular Zone Exploration (FIREPLACE) survey with SOFIA has mapped plane-of-the-sky magnetic field orientations within the Central Molecular Zone (CMZ) of the Milky Way. Applying the Histogram of Relative Orientation (HRO) analysis to the FIREPLACE data, we find that the relative orientation between magnetic fields and column density structures is random in low-density regions (2x10^22

Orientation dynamics of a spheroid in the simple shear flow of a weakly elastic fluid
Pavan Kumar Singeetham, Deepak Madival, Piyush Garg, Ganesh Subramanian
https://arxiv.org/abs/2505.23361

Orientation dynamics of a spheroid in the simple shear flow of a weakly elastic fluid
We investigate the orientation dynamics of a neutrally buoyant spheroid, of an arbitrary aspect ratio ($κ$), freely rotating in a weakly viscoelastic fluid undergoing simple shear flow. Weak elasticity is characterized by a small but finite Deborah number ($De$), and the suspending fluid rheology is therefore modeled as a second-order fluid, with the constitutive equation involving a material parameter $ε$ related to the ratio of the first and second normal stress differences; polymer solutio…

Multi-critic Learning for Whole-body End-effector Twist Tracking
Aravind Elanjimattathil Vijayan, Andrei Cramariuc, Mattia Risiglione, Christian Gehring, Marco Hutter
https://arxiv.org/abs/2507.08656

Multi-critic Learning for Whole-body End-effector Twist Tracking
Learning whole-body control for locomotion and arm motions in a single policy has challenges, as the two tasks have conflicting goals. For instance, efficient locomotion typically favors a horizontal base orientation, while end-effector tracking may benefit from base tilting to extend reachability. Additionally, current Reinforcement Learning (RL) approaches using a pose-based task specification lack the ability to directly control the end-effector velocity, making smoothly executing trajectori…

Flocking as a second-order phase transition in self-aligning active crystals
Marco Musacchio, Alexander P. Antonov, Hartmut L\"owen, Lorenzo Caprini
https://arxiv.org/abs/2506.12967

Flocking as a second-order phase transition in self-aligning active crystals
We study a two-dimensional crystal composed of active units governed by self-alignment. This mechanism induces a torque that aligns a particle's orientation with its velocity and leads to a phase transition from a disordered to a flocking crystal. Here, we provide the first microscopic theory that analytically maps the crystal dynamics onto a Landau-Ginzburg model, in which the velocity-dependent effective free energy undergoes a transition from a single-well shape to a Mexican-hat profile. As …

Spectral properties of distance Laplacian matrices of complex unit gain graphs
Aniruddha Samanta, Deepshikha
https://arxiv.org/abs/2507.21345 https://arxi…

Spectral properties of distance Laplacian matrices of complex unit gain graphs
A complex unit gain graph ($ \mathbb{T} $-gain graph), $ Φ=(G, φ) $ is a graph where the function $ φ$ assigns a unit complex number to each orientation of an edge of $ G $, and its inverse is assigned to the opposite orientation. In this article, we study several spectral properties of distance Laplacian matrices of $\mathbb{T}$-gain graphs. In particular, we establish a characterization for the balanced $ \mathbb{T}$-gain graph in terms of the nullity of gain distance Laplacian matrices. A…

Innovative Adaptive Imaged Based Visual Servoing Control of 6 DoFs Industrial Robot Manipulators
Rongfei Li, Francis Assadian
https://arxiv.org/abs/2506.10240

Innovative Adaptive Imaged Based Visual Servoing Control of 6 DoFs Industrial Robot Manipulators
Image-based visual servoing (IBVS) methods have been well developed and used in many applications, especially in pose (position and orientation) alignment. However, most research papers focused on developing control solutions when 3D point features can be detected inside the field of view. This work proposes an innovative feedforward-feedback adaptive control algorithm structure with the Youla Parameterization method. A designed feature estimation loop ensures stable and fast motion control whe…

Replaced article(s) found for physics.flu-dyn. https://arxiv.org/list/physics.flu-dyn/new
[1/1]:
- Preferential orientation of small floaters drifting in water waves
W. Herreman, B. Dhote, L. Danion, F. Moisy

In-Hand Object Pose Estimation via Visual-Tactile Fusion
Felix Nonnengie{\ss}er, Alap Kshirsagar, Boris Belousov, Jan Peters
https://arxiv.org/abs/2506.10787

In-Hand Object Pose Estimation via Visual-Tactile Fusion
Accurate in-hand pose estimation is crucial for robotic object manipulation, but visual occlusion remains a major challenge for vision-based approaches. This paper presents an approach to robotic in-hand object pose estimation, combining visual and tactile information to accurately determine the position and orientation of objects grasped by a robotic hand. We address the challenge of visual occlusion by fusing visual information from a wrist-mounted RGB-D camera with tactile information from v…

Aucamp: An Underwater Camera-Based Multi-Robot Platform with Low-Cost, Distributed, and Robust Localization
Jisheng Xu, Ding Lin, Pangkit Fong, Chongrong Fang, Xiaoming Duan, Jianping He
https://arxiv.org/abs/2506.09876

Aucamp: An Underwater Camera-Based Multi-Robot Platform with Low-Cost, Distributed, and Robust Localization
This paper introduces an underwater multi-robot platform, named Aucamp, characterized by cost-effective monocular-camera-based sensing, distributed protocol and robust orientation control for localization. We utilize the clarity feature to measure the distance, present the monocular imaging model, and estimate the position of the target object. We achieve global positioning in our platform by designing a distributed update protocol. The distributed algorithm enables the perception process to si…