Tootfinder

CNN axes King Charles, its weekly one-hour primetime show launched in fall 2023 by Chris Licht with hosts Gayle King and Charles Barkley, due to low ratings (Ariel Zilber/New York Post)
https://nypost.com/2024/04/15/media/cnn-…

CNN axes Charles Barkley and Gayle King's weekly show 'King Charles' after 6 months
The CNN weekly prime time talk show co-hosted by basketball loudmouth Charles Barkley and CBS morning star Gayle King has ended a six-month run that failed to produce ratings. The weekly call-in sh…

CNN axes King Charles, its weekly one-hour primetime show launched in fall 2023 by Chris Licht with hosts Gayle King and Charles Barkley, due to low ratings (Ariel Zilber/New York Post)
https://nypost.com/2024/04/15/media/cnn-…

CNN axes Charles Barkley and Gayle King's weekly show 'King Charles' after 6 months
The CNN weekly prime time talk show co-hosted by basketball loudmouth Charles Barkley and CBS morning star Gayle King has ended a six-month run that failed to produce ratings. The weekly call-in sh…

Jack Nicholson has a large collection of axes, and spends at least one hour every day polishing and honing them -- while muttering to himself "All work and no play ..."
#OddCelebrityHabits
#HashtagGames

Very interesting 🇫🇷 report looking at the needs for long distance heavy duty vehicle charging 🥖🥐🍾🚛🔌. Need to start planning and building now for 2035 needs. Good planning - e.g. sharing grid infrastructure with vehicle charging can bring big savings, but still huge investment needs.
https://www.

A Generic Trajectory Planning Method for Constrained All-Wheel-Steering Robots
Ren Xin, Hongji Liu, Yingbing Chen, Sheng Wang, Ming Liu
https://arxiv.org/abs/2404.09677

A Generic Trajectory Planning Method for Constrained All-Wheel-Steering Robots
This paper presents a trajectory planning method for wheeled robots with fixed steering axes while the steering angle of each wheel is constrained. In the past, All-Wheel-Steering(AWS) robots, incorporating modes such as rotation-free translation maneuvers, in-situ rotational maneuvers, and proportional steering, exhibited inefficient performance due to time-consuming mode switches. This inefficiency arises from wheel rotation constraints and inter-wheel cooperation requirements. The direct app…

Perfect matchings and spanning trees: squarishness, bijections and independence
Seok Hyun Byun, Mihai Ciucu
https://arxiv.org/abs/2404.09930 https://

Perfect matchings and spanning trees: squarishness, bijections and independence
A number which is either the square of an integer or two times the square of an integer is called squarish. There are two main results in the literature on graphs whose number of perfect matchings is squarish: one due to Jockusch (for planar graphs invariant under rotation by 90 degrees) and the other due to the second author (concerning planar graphs with two perpendicular symmetry axes). We present in this paper a new such class, consisting of certain planar graphs that are only required to h…

From The Narwhal
A mineral rush and a hiring crisis: Canadian mining’s ‘dirty’ image is scaring off recruits
Pick axes and coal dust aren’t selling a new generation on jobs in mining. Can the industry clean up its reputation — and act — to meet the demand for critical minerals?

A mineral rush and a hiring crisis: Canadian mining’s ‘dirty’ image is scaring off recruits
Pick axes and coal dust aren’t selling a new generation on jobs in mining. Can the industry clean up its reputation — and act — to meet the demand for critical minerals?

Two climbers found dead after summiting Mt. Whitney via treacherous route
Climbing down the final 400 in snowy conditions usually requires ropes, crampons and ice axes
because a fall on slippery terrain that steep would be almost impossible to stop.
A falling climber who missed the notch on the way down might hurtle thousands of feet down a terrifyingly steep face.
Details are still scarce on where, exactly, Niziol’s and Bolan’s bodies were found.
The Bee re…

2 California climbers found dead on treacherous Mt. Whitney route
Two climbers who were reported missing on Mt. Whitney’s technical Mountaineer’s Route on Tuesday have been found dead.

This https://arxiv.org/abs/2303.15345 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Spectrum of the Laplacian with mixed boundary conditions in a chamfered quarter of layer
We investigate the spectrum of a Laplace operator with mixed boundary conditions in an unbounded chamfered quarter of layer. This problem arises in the study of the spectrum of the Dirichlet Laplacian in thick polyhedral domains having some symmetries such as the so-called Fichera layer. The geometry we consider depends on two parameters gathered in some vector $κ=(κ_1,κ_2)$ which characterizes the domain at the edges. By exchanging the axes and/or modifying their orientations if necessary, …

From The Narwhal
A mineral rush and a hiring crisis: Canadian mining’s ‘dirty’ image is scaring off recruits
Pick axes and coal dust aren’t selling a new generation on jobs in mining. Can the industry clean up its reputation — and act — to meet the demand for critical minerals?

A mineral rush and a hiring crisis: Canadian mining’s ‘dirty’ image is scaring off recruits
Pick axes and coal dust aren’t selling a new generation on jobs in mining. Can the industry clean up its reputation — and act — to meet the demand for critical minerals?

Pick up a rock. Pick up another rock and hit the first one with it and knock off a chip. Keep hitting the first rock, knocking off chips, until it looks like it’ll do for whatever it is you’re going to use it for. Whack it some more with a stick or antler to sharpen the edges, if you think it’ll help.
Show #Thag what you’re doing so he can try it.

A bit personal, living in right-wing world and not managing to put your life in order
In a right-wing society, a man's life is expected to follow two main axes (women have it even worse, but I'm going to talk of the gender that I experience first hand):
1. Education − finding a job − gaining experience and promotions − managing to retire.
2. Finding a girlfriend − marriage − having children − rearing children.
Of course, there are other expectations too: buying a car and house, but they can generally be derived from these two axes.
While, technically, the individual elements aren't limited to a specific age, usually you have to deal with them early enough. I suppose many people can confirm that — those who tried to learn a new language, supplement their education, find a better job late in life. But things can get worse.
You could lose your job and discover that our specific experience isn't worth uch. You end up competing for junior positions, with people who are young, healthy and ambitious; with people who don't have all your negative experiences and who can accept a smaller living wage.
You could notice that all your friends have already started their own families, and you didn't have anything even remotely resembling a relationship for over 10 years now; that you find it harder and harder to connect with anyone.
I think that's precisely what being #MADAO is: discovering that you're already (relatively) old and you didn't put your life in order, in time. Add being neuroatypical to that. The awareness that you no longer have the momentum that made it possible for us to overcome difficulties, even if we were only moving through the path of least resistance. Now not only this path is no longer available to us, but also we're being burdened with emotional baggage that makes it almost impossible to move.
And the right-wing society doesn't include a place for people who aren't moving across the only legitimate axis.
#ActuallyAutistic

Can repeller dynamics explain dominant pebble axis ratios?
Bal\'azs Havasi-T\'oth
https://arxiv.org/abs/2404.08097 https://ar…

Can repeller dynamics explain dominant pebble axis ratios?
In the present work we focus on the morphology of well abraded, almost perfectly ellipsoidal natural pebbles. Flat, oblate and prolate ellipsoidal pebbles are expected to be characterized by qualitatively different shape evolution due to being unequally prone to specific rolling and sliding motions in natural environments. The three typical motions are considered as sliding on the flattest side and rolling around the longest and shortest axes. First, we assume by mechanical considerations that …

Y’ know what? One of the reasons I love bicycles is that they defy categorization the same way people do (and for some of the same reasons)
Mountain bike? Road bike? Oh yes the two genders.
Gravel bike. BMX bike. Commuter. Fat bike. Folding.
Most of the parts can be mixed and matched.
Brands just sell what they make usually. Generally kinda following the type but also fully making each mode and brand a little individual.
So what’s the difference between a gravel bike and a hybrid road bike? I could list a dozen subtle points but which a given bike has may well vary. All so very arguable and contextual. I love it. They’re just so inherently human systems. Deeply technical too, but in ways where it combines into axes of freedom rather than strict categories.

Ça devrait être Š la grandeur de la ville mais c'est un bon début
Logement: la Ville de Québec abolit l'obligation de construire des stationnements pour chaque projet
https://www.journaldequebec.com/2024/…

Still Up and Coming: Non-Planar FDM 3D Printing With 3 or 6 Axes
https://poliverso.org/display/0477a01e-ac699728-2a3989b9a5465f56
Still Up and Coming: Non-Planar FDM 3D Printing With 3 or 6 Axes

#statistics ✍️👀

Using axis lines for good or evil
add them only if they mean something

Structural investigation of the liquid crystalline phases of three homologues from the series of 4-pentylphenyl-4'-n-alkyloxythiobenzoates (n = 9, 10, 11)
Aleksandra Deptuch, Bartosz S\k{e}k, Sebastian Lalik, Miros{\l}awa D. Ossowska-Chru\'sciel, Janusz Chru\'sciel, Monika Marzec
https://arxiv.org/abs/2403.08328

Structural investigation of the liquid crystalline phases of three homologues from the series of 4-pentylphenyl-4'-n-alkyloxythiobenzoates (n = 9, 10, 11)
Polarizing optical microscopy and differential scanning calorimetry are used to determine the phase sequence of three liquid crystalline 4-pentylphenyl-4'-n-alkyloxythiobenzoates with n = 9, 10, 11. The X-ray diffraction method is applied for structural characterization of the liquid crystalline phases. The smectic layer spacing, tilt angle, average distance between the long axes of molecules and correlation length of the short-range order are determined as a function of temperature. For the cr…

In case you have every wondered why a rotary broach is sometimes called a "wobble broach" this video of my latest rotary broach design on my mill may make it cleare. Note that the wobble is largest at the top, where by design the body wobbles 0.77mm each direction from the center of rotation, or .154mm total runout, at the top. The tip of the broach doesn't appear to wobble, because that is where the machine axis and the wobble axis meet.
0.77mm is because the axes diverge at 1°, and t…

This https://arxiv.org/abs/2105.01337 has been replaced.
link: https://scholar.google.com/scholar?q=a

The geometry of high-dimensional phase diagrams: I. Generalized Gibbs Phase Rule
Significance Statement Phase diagrams are essential tools of the materials scientist, showing which phases are at equilibrium under a set of applied thermodynamic conditions. Essentially all phase diagrams today are two dimensional, typically constructed with axes of temperature-pressure or temperature-composition. For many modern materials, it would be valuable to construct phase diagrams that include additional forms of thermodynamic work--such as elastic, surface, electromagnetic or electr…

This https://arxiv.org/abs/2401.08222 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

Pulsation Phases and Mode Identification of Tidally Excited Oscillations in Fourteen Kepler Heartbeat Stars
Tidally excited oscillations (TEOs) in Heartbeat Stars (HBSs) are an essential probe of the internal properties of the systems, but their potential has yet to be fully exploited. Based on the orbital parameters of TEO candidates from our previous works, we identify the pulsation phases and amplitudes of TEOs in fourteen Kepler HBSs. Most pulsation phases of most systems can be explained by the dominant being $l=2$, $m=0$, or $\pm2$ spherical harmonic, assuming that the spin and orbital axes are…

Peak-Brightness Localization of the CNEOS 2014-01-08 (IM1) Fireball
Abraham Loeb (Harvard)
https://arxiv.org/abs/2403.07696 https://a…

Peak-Brightness Localization of the CNEOS 2014-01-08 (IM1) Fireball
In a recent preprint, Fernando et al. (2024) used public data from infrasound stations to constrain the localization of the fireball of the CNEOS 2014-01-08 (IM1) bolide. The analysis inferred a 90-percent-confidence ellipse with semi-minor and semi-major axes of 186 and 388 km, respectively. This large error ellipse includes the much better localization box derived by sensors aboard U.S. Government satellites which detected the fireball light. At the fireball's peak brightness, the CNEOS local…

AXES-2MRS: A new all-sky catalogue of extended X-ray galaxy groups
H. Khalil, A. Finoguenov, E. Tempel, G. A. Mamon
https://arxiv.org/abs/2403.17061 https:…

AXES-2MRS: A new all-sky catalogue of extended X-ray galaxy groups
We present a new all-sky catalogue of X-ray detected groups (AXES-2MRS), based on the identification of large X-ray sources found in the ROSAT All-Sky Survey (RASS) with the Two Micron Redshift Survey (2MRS) Bayesian Group Catalogue. We study the basic properties of these galaxy groups to gain insights into the effect of different group selections on the properties. In addition to X-ray luminosity coming from shallow survey data of RASS, we have obtained detailed X-ray properties of the groups …

Galaxy 3D Shape Recovery using Mixture Density Network
Suk Yee Yong, K. E. Harborne, Caroline Foster, Robert Bassett, Gregory B. Poole, Mitchell Cavanagh
https://arxiv.org/abs/2404.04491

Galaxy 3D Shape Recovery using Mixture Density Network
Since the turn of the century, astronomers have been exploiting the rich information afforded by combining stellar kinematic maps and imaging in an attempt to recover the intrinsic, three-dimensional (3D) shape of a galaxy. A common intrinsic shape recovery method relies on an expected monotonic relationship between the intrinsic misalignment of the kinematic and morphological axes and the triaxiality parameter. Recent studies have, however, cast doubt about underlying assumptions relating shap…

The @… has a lot of underutilized metadata – about boards, about features, and how they play together; some in YAML, some in Make, some in Doxygen. With some #RDF I'm pulling them together. If only I were a bit more fluent in on-the-fly HTML building tools…
WIP Code …

tools: Export RDF data about features and boards by chrysn · Pull Request #20395 · RIOT-OS/RIOT
Contribution description Building on #20366, this generates two RDF data sets: A semantically accessible version of the features with their hierarchical classification. This can be visualized eg. ...

Structural investigation of the liquid crystalline phases of three homologues from the series of 4-pentylphenyl-4'-n-alkyloxythiobenzoates (n = 9, 10, 11)
Aleksandra Deptuch, Bartosz S\k{e}k, Sebastian Lalik, Miros{\l}awa D. Ossowska-Chru\'sciel, Janusz Chru\'sciel, Monika Marzec
https://arxiv.org/abs/2403.08328

Structural investigation of the liquid crystalline phases of three homologues from the series of 4-pentylphenyl-4'-n-alkyloxythiobenzoates (n = 9, 10, 11)
Polarizing optical microscopy and differential scanning calorimetry are used to determine the phase sequence of three liquid crystalline 4-pentylphenyl-4'-n-alkyloxythiobenzoates with n = 9, 10, 11. The X-ray diffraction method is applied for structural characterization of the liquid crystalline phases. The smectic layer spacing, tilt angle, average distance between the long axes of molecules and correlation length of the short-range order are determined as a function of temperature. For the cr…

Rotations and boosts of Hermite functions
Maro Cvitan, Predrag Dominis Prester, Stefano Giaccari, Mateo Pauli\v{s}i\'c, Ivan Vukovi\'c
https://arxiv.org/abs/2405.00404

Rotations and boosts of Hermite functions
We provide transformation matrices for arbitrary Lorentz transformations of multidimensional Hermite functions in any dimension. These serve as a valuable tool for analyzing spacetime properties of MHS fields, and aid in the description of the relativistic harmonic oscillator and digital image manipulation. We also focus on finite boosts and rotations around specific axes, enabling us to identify the Lorentz Lie algebra generators. As an application and to establish a contact with the literatur…

This https://arxiv.org/abs/2403.03622 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csGR_…

Medial Parametrization of Arbitrary Planar Compact Domains with Dipoles
We present medial parametrization, a new approach to parameterizing any compact planar domain bounded by simple closed curves. The basic premise behind our proposed approach is to use two close Voronoi sites, which we call dipoles, to construct and reconstruct an approximate piecewise-linear version of the original boundary and medial axis through Voronoi tessellation. The boundaries and medial axes of such planar compact domains offer a natural way to describe the domain's interior. Any compac…

Magnetization processes in non single domain magnetite particles
N. A. Usov, O. N. Serebryakova
https://arxiv.org/abs/2405.02862 https://

Magnetization processes in non single domain magnetite particles
Quasi-static hysteresis loops of spherical and spheroidal magnetite nanoparticles with semi-axes ratio a/b = 1.5 and 2.0 with different types of combined magnetic anisotropy are calculated using numerical simulation. For particles of each type the critical diameters Dcr are determined so, that above Dcr the magnetization curling becomes the easiest mode of particle magnetization reversal. Hysteresis loops are calculated both for single-domain nanoparticles in the diameter range Dcr < D < Dc, an…

This https://arxiv.org/abs/2403.18808 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Solid lines in axial algebras of Jordan type $\tfrac{1}{2}$ and Jordan algebras
We show that a primitive axial algebra of Jordan type $η= \tfrac{1}{2}$ is a Jordan algebra if and only if every $2$-generated subalgebra is \emph{solid}, a notion introduced recently by Ilya Gorshkov, Sergey Shpectorov and Alexei Staroletov. As a byproduct, we show that a subalgebra generated by axes $a,b$ is solid if and only if the associator $[L_a,L_b]$ is a derivation. Moreover, we show that $2$-generated subalgebras that are not solid contain precisely $3$ axes.

This https://arxiv.org/abs/2211.02920 has been replaced.
link: https://scholar.google.com/scholar?q=a

GmGM: a Fast Multi-Axis Gaussian Graphical Model
This paper introduces the Gaussian multi-Graphical Model, a model to construct sparse graph representations of matrix- and tensor-variate data. We generalize prior work in this area by simultaneously learning this representation across several tensors that share axes, which is necessary to allow the analysis of multimodal datasets such as those encountered in multi-omics. Our algorithm uses only a single eigendecomposition per axis, achieving an order of magnitude speedup over prior work in the…

This https://arxiv.org/abs/2401.15782 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

Constraints on an Anisotropic Universe
We analyze the possibility of global anisotropy of the universe. We consider an altered Friedmann Lemaitre Robertson Walker metric in which there are different scale factors along the three different axes of space. We construct the corresponding altered Friedmann equations. We show that any initial anisotropies decrease into the future. At late times, the difference in Hubble parameters changes as $1/\sqrt{t}$ in a radiation dominated era and as $1/t$ in a matter dominated era. We use constrain…

Does nematic order allow groups of elongated cells to sense electric fields better?
Kurmanbek Kaiyrbekov, Brian A. Camley
https://arxiv.org/abs/2404.04723 …

Does nematic order allow groups of elongated cells to sense electric fields better?
Collective response to external directional cues like electric fields plays a pivotal role in processes such as tissue development, regeneration, and wound healing. In this study we focus on the impact of anisotropy in cell shape and local cell alignment on the collective response to electric fields. We model elongated cells that have a different accuracy sensing the field depending on their orientation with respect to the field. Elongated cells often line up with their long axes in the same di…

Polluting White Dwarfs with Oort Cloud Comets
Dang Pham, Hanno Rein
https://arxiv.org/abs/2404.07160 https://arxiv.org/pdf/2404.07160…

Polluting White Dwarfs with Oort Cloud Comets
Observations point to old white dwarfs (WDs) accreting metals at a relatively constant rate over 8~Gyrs. Exo-Oort clouds around WDs have been proposed as potential reservoirs of materials, with galactic tide as a mechanism to deliver distant comets to the WD's Roche limit. In this work, we characterise the dynamics of comets around a WD with a companion having semi-major axes on the orders of 10 - 100 AU. We develop simulation techniques capable of integrating a large number ($10^8$) of objects…

This https://arxiv.org/abs/2404.13857 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

A short review on the pulsar magnetic inclination angles
The inclination angle $χ$ between magnetic and rotation axes of pulsars is an important parameter in pulsar physics. The changes in the inclination angle of a pulsar would lead to observable effects, such as changes in the pulse beam width and braking index of the star. In this paper, we perform a short review on the evolution of pulsar's magnetic inclination angle, as well as the latest research progress. Using an alignment rotator model in vacuum, we investigate the magnetic inclination angl…

Searching for Exotic Spin-Dependent Interactions with Diamond-Based Vector Magnetometer
Aolong Guo, Runqi Kang, Man Jiao, Xing Rong
https://arxiv.org/abs/2402.15042

Searching for Exotic Spin-Dependent Interactions with Diamond-Based Vector Magnetometer
We propose a new method to search for exotic spin-spin interactions between electrons and nucleons using a diamond-based vector magnetometer. The vector magnetometer can be constructed from ensembles of nitrogen-vacancy centers along different axes in a diamond. The $^{14}\mathrm{N} $ nuclear spins of nitrogen-vacancy centers in the same diamond can be polarized through the dynamic nuclear polarization method to serve as spin sources. With the vector magnetometer, the sought-after exotic intera…

This https://arxiv.org/abs/2307.00620 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hepp…

Polarization of recoil photon in non-linear Compton process
The polarization of recoil photon ($γ'$) in the non-linear Compton process $e + \vec L \to \vec γ' +e'$ in the interaction of a relativistic electron with a linearly polarized laser beam ($\vec L$) is studied within the Furry picture in the lowest-order, tree-level S matrix element. In particular, we consider the asymmetry of differential cross sections ${\cal A}$ for two independent axes describing the Compton process equal to the intrinsic spin variable $ξ^f_3$, that determines the polariz…

On global regularity of some bi-rotational Euler flows in $\mathbb{R}^{4}$
Kyudong Choi, In-Jee Jeong, Deokwoo Lim
https://arxiv.org/abs/2402.18111 https:/…

On global regularity of some bi-rotational Euler flows in $\mathbb{R}^{4}$
In this paper, we consider incompressible Euler flows in $ \mathbb{R}^{4} $ under bi-rotational symmetry, namely solutions that are invariant under rotations in $\mathbb{R}^{4}$ fixing either the first two or last two axes. With the additional swirl-free assumption, our first main result gives local wellposedness of Yudovich-type solutions, extending the work of Danchin [Uspekhi Mat. Nauk 62(2007), no.3, 73-94] for axisymmetric flows in $\mathbb{R}^{3}$. The second main result establishes globa…

This https://arxiv.org/abs/2307.13891 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_nuc…

Jet-hadron correlations with respect to the event plane in $\sqrt{s_{\mathrm{NN}}}$ = 200 GeV Au+Au collisions in STAR
Angular distributions of charged particles relative to jet axes are studied in $\sqrt{s_{\mathrm{NN}}}$ = 200 GeV Au+Au collisions as a function of the jet orientation with respect to the event plane. This differential study tests the expected path-length dependence of energy loss experienced by a hard-scattered parton as it traverses the hot and dense medium formed in heavy-ion collisions. A second-order event plane is used in the analysis as an experimental estimate of the reaction plane form…

AXES-SDSS: comparison of SDSS galaxy groups with All-sky X-ray Extended Sources
S. Damsted, A. Finoguenov, H. Lietzen, G. A. Mamon, J. Comparat, E. Tempel, I. Dmitrieva, N. Clerc, C. Collins, G. Gozaliasl, D. Eckert
https://arxiv.org/abs/2403.17055

AXES-SDSS: comparison of SDSS galaxy groups with All-sky X-ray Extended Sources
We revisit the picture of X-ray emission of groups through the study of systematic differences in the optical properties of groups with and without X-ray emission and study the effect of large-scale density field on scaling relations. We present the identification of X-ray galaxy groups using a combination of RASS and SDSS data. We include new X-ray reanalysis of RASS, to include very extended (up to a size of half a degree) sources and account for differences in the limiting sensitivity toward…

This https://arxiv.org/abs/2401.14254 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Diagrammatic representations of 3-periodic entanglements
Diagrams enable the use of various algebraic and geometric tools for analysing and classifying knots. In this paper we introduce a new diagrammatic representation of triply-periodic entangled structures (TP tangles), which are embeddings of simple curves in $\mathbb{R}^3$ that are invariant under translations along three non-coplanar axes. As such, these entanglements can be seen as lifts of links in the 3-torus $\mathbb{T}^3 = \mathbb{S}^1 \times \mathbb{S}^1 \times \mathbb{S}^1$, where two no…

This https://arxiv.org/abs/2311.01859 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_ees…

Control Design for Trajectory Tracking and Stabilization of Sensor LOS in an Inertially Stabilized Platform
Optical sensors are often mounted on moving platforms to aid in a variety of tasks like data collection, surveillance and navigation. This necessitates the precise control of the inertial orientation of the optical sensor line-of-sight (LOS) towards a desired stationary or mobile target. A two-axes gimbal assembly is considered to achieve this control objective which can be decomposed into two parts - stabilization and tracking. A novel state space model is proposed based on the dynamics of a t…

This https://arxiv.org/abs/1610.07905 has been replaced.
link: https://scholar.google.com/scholar?q=a

On Yomdin's version of a Lipschitz Implicit Function Theorem and the geometry of medial axes
In his beautiful paper on the central set from 1981, Y. Yomdin makes use of a Lipschitz Inverse Function Theorem that seemingly has been unproved until now. After a brief discussion of a natural and straightforward Lipschitz counterpart of an implicit function theorem, based on a geometric condition we finally provide a proof of Yomdin's version holds by proving the geometric condition is in fact equivalent to the one given by Yomdin. Therefore, Yomdin's Generic Structure Theorem, whose updated…

Medial Parametrization of Arbitrary Planar Compact Domains with Dipoles
Vinayak Krishnamurthy, Ergun Akleman
https://arxiv.org/abs/2403.03622 https://

Medial Parametrization of Arbitrary Planar Compact Domains with Dipoles
We present medial parametrization, a new approach to parameterizing any compact planar domain bounded by simple closed curves. The basic premise behind our proposed approach is to use two close Voronoi sites, which we call dipoles, to construct and reconstruct an approximate piecewise-linear version of the original boundary and medial axis through Voronoi tessellation. The boundaries and medial axes of such planar compact domains offer a natural way to describe the domain's interior. Any compac…

This https://arxiv.org/abs/2403.18808 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Solid lines in axial algebras of Jordan type $\tfrac{1}{2}$ and Jordan algebras
We show that a primitive axial algebra of Jordan type $η= \tfrac{1}{2}$ is a Jordan algebra if and only if every $2$-generated subalgebra is \emph{solid}, a notion introduced recently by Ilya Gorshkov, Sergey Shpectorov and Alexei Staroletov. As a byproduct, we show that a subalgebra generated by axes $a,b$ is solid if and only if the associator $[L_a,L_b]$ is a derivation. Moreover, we show that $2$-generated subalgebras that are not solid contain precisely $3$ axes.

This https://arxiv.org/abs/2211.02920 has been replaced.
link: https://scholar.google.com/scholar?q=a

GmGM: a Fast Multi-Axis Gaussian Graphical Model
This paper introduces the Gaussian multi-Graphical Model, a model to construct sparse graph representations of matrix- and tensor-variate data. We generalize prior work in this area by simultaneously learning this representation across several tensors that share axes, which is necessary to allow the analysis of multimodal datasets such as those encountered in multi-omics. Our algorithm uses only a single eigendecomposition per axis, achieving an order of magnitude speedup over prior work in the…

Evidence for Primordial Alignment: Insights from Stellar Obliquity Measurements for Compact Sub-Saturn Systems
Brandon T. Radzom, Jiayin Dong, Malena Rice, Xian-Yu Wang, Samuel W. Yee, Tyler R. Fairnington, Cristobal Petrovich, Songhu Wang
https://arxiv.org/abs/2404.06504

Evidence for Primordial Alignment: Insights from Stellar Obliquity Measurements for Compact Sub-Saturn Systems
Despite decades of effort, the mechanisms by which the spin axis of a star and the orbital axes of its planets become misaligned remain elusive. Particularly, it is of great interest whether the large spin-orbit misalignments observed are driven primarily by high-eccentricity migration -- expected to have occurred for short-period, isolated planets -- or reflect a more universal process that operates across systems with a variety of present-day architectures. Compact multi-planet systems offer …

Sun-Jupiter-Saturn System may exist: A verified computation of quasiperiodic solutions for the planar three body problem
Jordi-Llu\'is Figueras, Alex Haro
https://arxiv.org/abs/2403.10152

Sun-Jupiter-Saturn System may exist: A verified computation of quasiperiodic solutions for the planar three body problem
In this paper, we present evidence of the stability of a simplified model of the Solar System, a flat (Newtonian) Sun-Jupiter-Saturn system with realistic data: masses of the Sun and the planets, their semi-axes, eccentricities and (apsidal) precessions of the planets close to the real ones. The evidence is based on convincing numerics that a KAM theorem can be applied to the Hamiltonian equations of the model to produce quasiperiodic motion (on an invariant torus) with the appropriate frequenc…

Synthesis of $c$-axis textured CaKFe$_4$As$_4$ superconducting bulk via spark plasma texturing technique
Shigeyuki Ishida, Yoshihisa Kamiya, Yoshinori Tsuchiya, Pavan Kumar Naik Sugali, Yasunori Mawatari, Akira Iyo, Yoshiyuki Yoshida, Hiroshi Eisaki, Kenji Kawashima, Hiraku Ogino
https://arxiv.org/abs/2403.19984

Synthesis of $c$-axis textured CaKFe$_4$As$_4$ superconducting bulk via spark plasma texturing technique
Grain alignment is a key factor that determines the performance of a superconducting bulk. In this study, the spark plasma texturing (SPT) technique was used to fabricate a CaKFe$_4$As$_4$ superconducting bulk. X-ray diffraction and electron backscatter diffraction revealed that the $c$-axes of the CaKFe$_4$As$_4$ grains in the SPT bulk are aligned, demonstrating that the SPT technique is effective in achieving $c$-axis texture. In addition, chemical composition analysis showed that oxide impur…

Does nematic order allow groups of elongated cells to sense electric fields better?
Kurmanbek Kaiyrbekov, Brian A. Camley
https://arxiv.org/abs/2404.04723 …

Does nematic order allow groups of elongated cells to sense electric fields better?
Collective response to external directional cues like electric fields plays a pivotal role in processes such as tissue development, regeneration, and wound healing. In this study we focus on the impact of anisotropy in cell shape and local cell alignment on the collective response to electric fields. We model elongated cells that have a different accuracy sensing the field depending on their orientation with respect to the field. Elongated cells often line up with their long axes in the same di…

This https://arxiv.org/abs/2404.09677 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csRO_…

A Generic Trajectory Planning Method for Constrained All-Wheel-Steering Robots
This paper presents a trajectory planning method for wheeled robots with fixed steering axes while the steering angle of each wheel is constrained. In the past, All-Wheel-Steering(AWS) robots, incorporating modes such as rotation-free translation maneuvers, in-situ rotational maneuvers, and proportional steering, exhibited inefficient performance due to time-consuming mode switches. This inefficiency arises from wheel rotation constraints and inter-wheel cooperation requirements. The direct app…

Anisotropic Dynamical Planckian Scaling of the Quasi-Kagome Kondo Lattice CeRhSn with Strong Valence Fluctuation
Shin-ichi Kimura, Muhammad Frassetia Lubis, Hiroshi Watanabe, Yasuyuki Shimura, Toshiro Takabatake
https://arxiv.org/abs/2402.18176

Anisotropic Dynamical Planckian Scaling of the Quasi-Kagome Kondo Lattice CeRhSn with Strong Valence Fluctuation
The anisotropic electronic structure and Drude response of the quasi-kagome Kondo lattice CeRhSn have been investigated using polarized optical conductivity measurements and first-principles density-functional-theory calculations. Along the hexagonal $a$- and $c$-axes, the peaks in the middle-infrared region originating from the hybridization between conduction bands and Ce~$4f$ states appear even at room temperature, indicating strong valence fluctuation. Renormalized Drude structures observed…

A short review on the pulsar magnetic inclination angles
Biao-Peng Li, Zhi-Fu Gao
https://arxiv.org/abs/2404.13857 https://arxiv.org/…

A short review on the pulsar magnetic inclination angles
The inclination angle $χ$ between magnetic and rotation axes of pulsars is an important parameter in pulsar physics. The changes in the inclination angle of a pulsar would lead to observable effects, such as changes in the pulse beam width and braking index of the star. In this paper, we perform a short review on the evolution of pulsar's magnetic inclination angle, as well as the latest research progress. Using an alignment rotator model in vacuum, we investigate the magnetic inclination angl…

Evidence for Primordial Alignment: Insights from Stellar Obliquity Measurements for Compact Sub-Saturn Systems
Brandon T. Radzom, Jiayin Dong, Malena Rice, Xian-Yu Wang, Samuel W. Yee, Tyler R. Fairnington, Cristobal Petrovich, Songhu Wang
https://arxiv.org/abs/2404.06504

Evidence for Primordial Alignment: Insights from Stellar Obliquity Measurements for Compact Sub-Saturn Systems
Despite decades of effort, the mechanisms by which the spin axis of a star and the orbital axes of its planets become misaligned remain elusive. Particularly, it is of great interest whether the large spin-orbit misalignments observed are driven primarily by high-eccentricity migration -- expected to have occurred for short-period, isolated planets -- or reflect a more universal process that operates across systems with a variety of present-day architectures. Compact multi-planet systems offer …

On global regularity of some bi-rotational Euler flows in $\mathbb{R}^{4}$
Kyudong Choi, In-Jee Jeong, Deokwoo Lim
https://arxiv.org/abs/2402.18111 https:/…

On global regularity of some bi-rotational Euler flows in $\mathbb{R}^{4}$
In this paper, we consider incompressible Euler flows in $ \mathbb{R}^{4} $ under bi-rotational symmetry, namely solutions that are invariant under rotations in $\mathbb{R}^{4}$ fixing either the first two or last two axes. With the additional swirl-free assumption, our first main result gives local wellposedness of Yudovich-type solutions, extending the work of Danchin [Uspekhi Mat. Nauk 62(2007), no.3, 73-94] for axisymmetric flows in $\mathbb{R}^{3}$. The second main result establishes globa…

This https://arxiv.org/abs/2405.00590 has been replaced.
initial toot: https://mastoxiv.page/@arXi…

Nonlinear Poisson effect in affine semiflexible polymer networks
Stretching an elastic material along one axis typically induces contraction along the transverse axes, a phenomenon known as the Poisson effect. From these strains, one can compute the specific volume, which generally either increases or, in the incompressible limit, remains constant as the material is stretched. However, in networks of semiflexible or stiff polymers, which are typically highly compressible yet stiffen significantly when stretched, one instead sees a significant reduction in sp…

Noise Suppression with Cryogenic Resonators
Eugene N. Ivanov, Michael E. Tobar
https://arxiv.org/abs/2403.18427 https://arxiv.org/pdf…

Noise Suppression with Cryogenic Resonators
We show that fast technical fluctuations of microwave signals can be strongly suppressed by cryogenic resonators. The experiments were carried out with sapphire resonators cooled to approximately 6 K at frequencies around 11 GHz. Each sapphire crystal was shaped like a spindle with the rotational and crystal axes aligned within a degree. Noise suppression factors in excess of 50 dB were measured at 10 kHz offset from the carrier. This was achieved by rotating the sapphire spindle and moving the…

This https://arxiv.org/abs/2312.03620 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_ees…

Golden Gemini is All You Need: Finding the Sweet Spots for Speaker Verification
Previous studies demonstrate the impressive performance of residual neural networks (ResNet) in speaker verification. The ResNet models treat the time and frequency dimensions equally. They follow the default stride configuration designed for image recognition, where the horizontal and vertical axes exhibit similarities. This approach ignores the fact that time and frequency are asymmetric in speech representation. In this paper, we address this issue and look for optimal stride configurations …

Determination of principal axes orientation in an ion trap using matter-wave interference
Ryoichi Saito, Takashi Mukaiyama
https://arxiv.org/abs/2403.14383

This https://arxiv.org/abs/2307.13891 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_nuc…

Jet-hadron correlations with respect to the event plane in $\sqrt{s_{\mathrm{NN}}}$ = 200 GeV Au+Au collisions in STAR
Angular distributions of charged particles relative to jet axes are studied in $\sqrt{s_{\mathrm{NN}}}$ = 200 GeV Au+Au collisions as a function of the jet orientation with respect to the event plane. This differential study tests the expected path-length dependence of energy loss experienced by a hard-scattered parton as it traverses the hot and dense medium formed in heavy-ion collisions. A second-order event plane is used in the analysis as an experimental estimate of the reaction plane form…

MATTopo: Topology-preserving Medial Axis Transform with Restricted Power Diagram
Ningna Wang, Hui Huang, Shibo Song, Bin Wang, Wenping Wang, Xiaohu Guo
https://arxiv.org/abs/2403.18761

MATTopo: Topology-preserving Medial Axis Transform with Restricted Power Diagram
We present a novel volumetric RPD (restricted power diagram) based framework for approximating the medial axes of 3D CAD shapes adaptively, while preserving topological equivalence, medial features, and geometric convergence. To solve the topology preservation problem, we propose a volumetric RPD based strategy, which discretizes the input volume into sub-regions given a set of medial spheres. With this intermediate structure, we convert the homotopy equivalence between the generated medial mes…

Testing the TDE Outflow Model for the Bipolar Sgr A Lobes at the Galactic Center
Sida Li, Fulai Guo
https://arxiv.org/abs/2404.10205 https://

Testing the TDE Outflow Model for the Bipolar Sgr A Lobes at the Galactic Center
Sgr A lobes are a pair of 15-pc-sized bipolar bubbles with co-aligned major axes perpendicular to the Galactic plane found in X-ray and radio observations of the Galactic center (GC). Their elusive origin is a vital ingredient in understanding the ongoing high energy processes at the GC. Here we perform a suite of hydrodynamic simulations to explore the tidal disruption event (TDE) outflow model for the origin of the Sgr A lobes. By following the outflow evolution in the circumnuclear medium, w…

This https://arxiv.org/abs/2405.00590 has been replaced.
initial toot: https://mastoxiv.page/@arXi…

Nonlinear Poisson effect in affine semiflexible polymer networks
Stretching an elastic material along one axis typically induces contraction along the transverse axes, a phenomenon known as the Poisson effect. From these strains, one can compute the specific volume, which generally either increases or, in the incompressible limit, remains constant as the material is stretched. However, in networks of semiflexible or stiff polymers, which are typically highly compressible yet stiffen significantly when stretched, one instead sees a significant reduction in sp…

This https://arxiv.org/abs/2312.03620 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_ees…

Golden Gemini is All You Need: Finding the Sweet Spots for Speaker Verification
Previous studies demonstrate the impressive performance of residual neural networks (ResNet) in speaker verification. The ResNet models treat the time and frequency dimensions equally. They follow the default stride configuration designed for image recognition, where the horizontal and vertical axes exhibit similarities. This approach ignores the fact that time and frequency are asymmetric in speech representation. In this paper, we address this issue and look for optimal stride configurations …

Velocity Dispersions of Quiescent Galaxies in IllustirisTNG
Jubee Sohn, Margaret J. Geller, Josh Borrow, Mark Vogelsberger
https://arxiv.org/abs/2402.14218

Velocity Dispersions of Quiescent Galaxies in IllustirisTNG
We examine the central stellar velocity dispersion of subhalos based on IllustrisTNG cosmological hydrodynamic simulations. The central velocity dispersion is a fundamental observable that links galaxies with their dark matter subhalos. We carefully explore simulated stellar velocity dispersions derived with different definitions to assess possible systematics. We explore the impact of variation in the identification of member stellar particles, the viewing axes, the velocity dispersion computa…

This https://arxiv.org/abs/2405.00590 has been replaced.
initial toot: https://mastoxiv.page/@arXi…

Nonlinear Poisson effect in affine semiflexible polymer networks
Stretching an elastic material along one axis typically induces contraction along the transverse axes, a phenomenon known as the Poisson effect. From these strains, one can compute the specific volume, which generally either increases or, in the incompressible limit, remains constant as the material is stretched. However, in networks of semiflexible or stiff polymers, which are typically highly compressible yet stiffen significantly when stretched, one instead sees a significant reduction in sp…

Generalized angularities and differential jet shapes measurements from STAR at $\sqrt{s} = $ 200 GeV
Tanmay Pani
https://arxiv.org/abs/2403.13928 https://<…

Generalized angularities and differential jet shapes measurements from STAR at $\sqrt{s} = $ 200 GeV
Jets from early stages of heavy-ion collisions undergo modified showering in quark-gluon plasma (QGP) relative to vacuum due to jet-medium interactions, which can be measured using observables like differential jet shape and generalized angularities. Differential jet shape ($ρ(\mathbf{R})$) encodes radially differential information about jet broadening and has shown an average migration of charged energy away from the axes of quenched jets from Pb+Pb collisions at the LHC. Measurements of gene…

Velocity Dispersions of Quiescent Galaxies in IllustirisTNG
Jubee Sohn, Margaret J. Geller, Josh Borrow, Mark Vogelsberger
https://arxiv.org/abs/2402.14218

Velocity Dispersions of Quiescent Galaxies in IllustirisTNG
We examine the central stellar velocity dispersion of subhalos based on IllustrisTNG cosmological hydrodynamic simulations. The central velocity dispersion is a fundamental observable that links galaxies with their dark matter subhalos. We carefully explore simulated stellar velocity dispersions derived with different definitions to assess possible systematics. We explore the impact of variation in the identification of member stellar particles, the viewing axes, the velocity dispersion computa…

Nonlinear Poisson effect in affine semiflexible polymer networks
Jordan L. Shivers, Fred C. MacKintosh
https://arxiv.org/abs/2405.00590 https://

Nonlinear Poisson effect in affine semiflexible polymer networks
Stretching an elastic material along one axis typically induces contraction along the transverse axes, a phenomenon known as the Poisson effect. From these strains, one can compute the specific volume, which generally either increases or, in the incompressible limit, remains constant as the material is stretched. However, in networks of semiflexible or stiff polymers, which are typically highly compressible yet stiffen significantly when stretched, one instead sees a significant reduction in sp…

The multi-wavelength phase curves of small bodies: Phase coloring
Alvaro Alvarez-Candal
https://arxiv.org/abs/2402.11113 https://arxi…

The multi-wavelength phase curves of small bodies: Phase coloring
Context. Small bodies change their brightness due to different motives: Rotation along their axis or axes, combined with irregular shapes and/or changing surface properties, or changes in the geometry of observations. In this work, we tackle the problem of Phase curves, which show the change in brightness due to changes in the fraction of illuminated surface as seen by the observer. Aims. We aim to study the effect of the phase curves in the five wavelengths of the Sloan Digital Sky Survey in s…