Tootfinder

Adaptive Distance Functions via Kelvin Transformation
Rafael I. Cabral Muchacho, Florian T. Pokorny
https://arxiv.org/abs/2406.03200 https://

Adaptive Distance Functions via Kelvin Transformation
The term safety in robotics is often understood as a synonym for avoidance. Although this perspective has led to progress in path planning and reactive control, a generalization of this perspective is necessary to include task semantics relevant to contact-rich manipulation tasks, especially during teleoperation and to ensure the safety of learned policies. We introduce the semantics-aware distance function and a corresponding computational method based on the Kelvin Transformation. The seman…

Leafy Vegetables now contain old Tires
In commercial leafy vegetables, six tire-derived compounds were detected: benzothiazole (maximum concentration—238 ng/g dry weight), 2-hydroxybenzothiazole (maximum concentration—665 ng/g dry weight), 1,3-diphenylguanidine (maximum concentration—2.1 ng/g dry weight), N-(1,3-dimethylbutyl)-N′-phenyl-p-phenylenediamine (6PPD, maximum concentration—0.4 ng/g dry weight), N-Isopropyl-N-phenyl-4-phenylenediamine (IPPD, maximum concentration—0.1 ng/g dry…

Uptake of tire-derived compounds in leafy vegetables and implications for human dietary exposure
IntroductionTire and road wear particles are one of the most abundant types of microplastic entering the environment. The toxicity of tire and road wear particles has been linked to their organic additives and associated transformation products. Tire and road wear particles, and associated tire-derived compounds are introduced to the agricultural environment via atmospheric deposition, irrigation with reclaimed wastewater, and the use of biosolids (treated sewage sludge) as fertilizer. In the a…

re: UKPol BBC election debate show
The depressing thing is that what we have here a fairly wide range of ideas.
Quite a lot of the country realize that crime is solved by caring not a truncheon, that investing in a green economy can cause an economic transformation, that threatening to destroy cities full of innocent people is insane and wrong, that government should be local, that not everything is best run by corrupt businesses skimming profit, that migration can enrich a country financially and culturally.
But none of those voices will make it into the house because of the utterly broken electoral and media systems.
The two parties that can win disagree with everything I mentioned there, and can't do otherwise because of the dynamics of their coalitions.
Even if they do agree with any of that, they have to lie and pretend in order to get the positions they want.
That's what's broken, and switching to Labour for the next half-decade will be a relief, but it won't fix it.
Nigel Farage was right. The corruption is from the electoral system, and nothing can be fixed until we have a more proportional representative government.
That is literally the only thing he was right about though.
#ukpol #election #debate

Adaptive Distance Functions via Kelvin Transformation
Rafael I. Cabral Muchacho, Florian T. Pokorny
https://arxiv.org/abs/2406.03200 https://

Adaptive Distance Functions via Kelvin Transformation
The term safety in robotics is often understood as a synonym for avoidance. Although this perspective has led to progress in path planning and reactive control, a generalization of this perspective is necessary to include task semantics relevant to contact-rich manipulation tasks, especially during teleoperation and to ensure the safety of learned policies. We introduce the semantics-aware distance function and a corresponding computational method based on the Kelvin Transformation. The seman…

Conic Surfaces and Transformations for X-Ray Beamline Optics Modeling
Manuel Sanchez del Rio, Kenneth Goldberg
https://arxiv.org/abs/2406.04079 https://

Conic Surfaces and Transformations for X-Ray Beamline Optics Modeling
Optical surfaces represented by second-degree polynomials (quadratic or conics) are ubiquitous in optics. We revisit the equations of the conic shapes in the context of grazing incidence optics, gathering together the curves commonly used in x-ray instruments and synchrotron beamlines. We present the equations for paraboloids, ellipsoids, and hyperboloids in a common and consistent notation. We develop the transformations from centered systems that are commonly used to describe conics and their…

Restructuring disorder: Transformation from the antiferromagnetic order in Fe2VSi to the ferromagnetic state in FeRuVSi by substitution of a non-magnetic element
Shuvankar Gupta, Sudip Chakraborty, Celine Barreteau, Jean-Claude Crivello, Jean-Marc Greneche, Eric Alleno, Chandan Mazumdar
https://arxiv.org/abs/2406.03656

Restructuring disorder: Transformation from the antiferromagnetic order in Fe2VSi to the ferromagnetic state in FeRuVSi by substitution of a non-magnetic element
The delicate nature of the half-metallic ferromagnetic (HMF) property in Heusler alloys is often compromised by inherent structural disorder within the systems. Fe2VSi is a prime example, where such disorder prevents the realization of the theoretically proposed HMF state as the anti-site disorder leads to the formation of two anti-parallel magnetic lattices resulting in antiferromagnetic order. In this study, we propose an innovative and simple strategy to prevent this atomic disorder by repla…

This https://arxiv.org/abs/2405.06051 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_qu…

Explicit decoders using quantum singular value transformation
Recovering quantum information from a noisy quantum system is one of the central challenges in quantum information science and fundamental physics. The key to this goal is explicitly constructing a decoder. In this paper, we provide two explicit decoding quantum circuits that are both capable of recovering quantum information when a decoupling condition is satisfied, i.e., when quantum information is in principle recoverable. The decoders are constructed by using the fixed-point amplitude ampli…

This https://arxiv.org/abs/2310.03496 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_hept…

S-move matrix in the NS sector of $N=1$ super Liouville field theory
In this paper we calculate matrix of modular transformations of the one-point toric conformal blocks in the Neveu-Schwarz sector of $N=1$ super Liouville field theory. For this purpose we use explicit expression for this matrix as integral of product of certain elements of fusion matrix. This integral is computed using the chain of integral identities for supersymmetric hyperbolic gamma functions derived by the degeneration of the integrals of parafermionic elliptic gamma functions.

This https://arxiv.org/abs/2401.08110 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_qu…

Success probabilities in time-reversal based hybrid quantum state transfer
We consider two memory nodes of a quantum network connected by flying qubits. We are particularly interested in the case where a flying qubit produced by one node has to be transformed before it can interface efficiently with the next node. Such transformations can be utilized as a key part of the distribution of quantum states and hence entanglement between the nodes of a hybrid quantum network linking together different quantum technologies. We show how and why the probability of interfacing …

Realization of higher coordinated Er in high-pressure cotunnite phase of Er$_2$Ti$_2$O$_7$
M. Modak, Rahul Kaiwart, Santosh K. Gupta, A. Dwivedi, K. K. Pandey, A. K. Poswal, H. K. Poswal
https://arxiv.org/abs/2406.04128

Realization of higher coordinated Er in high-pressure cotunnite phase of Er$_2$Ti$_2$O$_7$
In this article we report the structural stability of Er$_2$Ti$_2$O$_7$ cubic pyrochlore with pressure using x-ray diffraction, Raman spectroscopy, photoluminescence, x-ray absorption and ab-initio calculations. Our studies establish a phase transformation in Er$_2$Ti$_2$O$_7$ from ambient cubic phase to high-pressure orthorhombic (cotunnite) phase, initiated at ~40 GPa. The transformation is sluggish and it does not complete even at the highest measured pressure in our study i.e. ~60.0 GPa. Th…