cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Multi-task neural networks by learned contextual inputs
Creators: name: Sandnes, Anders T.
name: Grimstad, Bjarne
name: Kolbjørnsen, Odd
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: This paper explores learned-context neural networks. It is a multi-task learning architecture based on a fully shared neural network and an augmented input vector containing trainable task parameters. The architecture is interesting due to its powerful task adaption mechanism, which facilitates a low-dimensional task parameter space. Theoretically, we show that a scalar task parameter is sufficient for universal approximation of all tasks, which is not necessarily the case for more common architectures. Evidence towards the practicality of such a small task parameter space is given empirically. The task parameter space is found to be well-behaved, and simplifies workflows related to updating models as new data arrives, and training new tasks when the shared parameters are frozen. Additionally, the architecture displays robustness towards cases with few data points. The architecture's performance is compared to similar neural network architectures on ten datasets.
description: 35 pages, 9 figures
Invariant curves for endomorphisms of $\mathbb P^1\times \mathbb P^1$
Creators: name: Pakovich, Fedor
Publisher: name: arXiv
Year: 2019
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: Let $A_1, A_2\in \mathbb C(z)$ be rational functions of degree at least two that are neither Lattès maps nor conjugate to $z^{\pm n}$ or $\pm T_n.$ We describe invariant, periodic, and preperiodic algebraic curves for endomorphisms of $(\mathbb P^1(\mathbb C))^2$ of the form $(z_1,z_2)\rightarrow (A_1(z_1),A_2(z_2)).$ In particular, we show that if $A\in \mathbb C(z)$ is not a "generalized Lattès map", then any $(A,A)$-invariant curve has genus zero and can be parametrized by rational functions commuting with $A$. As an application, for $A$ defined over a subfield $K$ of $ \mathbb C$ we give a criterion for a point of $(\mathbb P^1(K))^2$ to have a Zariski dense $(A, A)$-orbit in terms of canonical heights, and deduce from this criterion a version of a conjecture of Zhang on the existence of rational points with Zariski dense forward orbits. We also prove a result about functional decompositions of iterates of rational functions, which implies in particular that there exist at most finitely many $(A_1, A_2)$-invariant curves of any given bi-degree $(d_1,d_2).$
description: The final version, published by Math. Ann
Critical cones for sufficient second order conditions in PDE constrained optimization
Creators: name: Casas, Eduardo
name: Mateos, Mariano
Publisher: name: arXiv
Year: 2019
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 35K59, 49K20

description: In this paper, we analyze optimal control problems governed by semilinear parabolic equations. Box constraints for the controls are imposed and the cost functional involves the state and possibly a sparsity-promoting term, but not a Tikhonov regularization term. Unlike finite dimensional optimization or control problems involving Tikhonov regularization, second order sufficient optimality conditions for the control problems we deal with must be imposed in a cone larger than the one used to obtain necessary conditions. Different extensions of this cone have been proposed in the literature for different kinds of minima: strong or weak minimizers for optimal control problems. After a discussion on these extensions, we propose a new extended cone smaller than those considered until now. We prove that a second order condition based on this new cone is sufficient for a strong local minimum.
description: 22 pages. Equation numbering in section 2 adjusted to match the journal version
Dolichogenidea christinaagapakisae Fernandez-Triana & Boudreault 2025, sp. nov.
Creators: name: Fernandez-Triana, Jose L.
name: Boudreault, Caroline
name: Whitfield, James B.
name: Höcherl, Amelie
name: Smith, M. Alex
name: Hallwachs, Winnifred
name: Janzen, Daniel H.
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Braconidae
Dolichogenidea
Dolichogenidea christinaagapakisae

description: Dolichogenidea christinaagapakisae Fernandez-Triana & Boudreault sp. nov.
Fig. 42 A – F
Type material.
Holotype. Costa Rica • Female, CNC; Alajuela, Area de Conservación Guanacaste, Sector Rincon Rain Forest, Sendero Rincon; 10.8962, -85.27769; 430 m; 28.iii.2012; Jose Perez leg.; Host: gelJanzen 01 Janzen 23; Voucher code: DHJPAR 0049406; Host voucher code: 12-SRNP-41329.
Diagnostic description.
Ocelli comparatively larger, ocular ocellar line <2.2 × posterior ocellar line; anteromesoscutum more or less shiny but with well-marked punctures; scutellar disc smooth and shiny, without punctures; fore wing vein 2 CU medially raised or arched in a sharp angle; T 1 strongly sculptured on posterior 0.5; T 2 mostly sculptured but smooth centrally or along margins; T 2 transverse, its width at posterior margin ~ 3.5 × its central length; tegula and humeral complex yellow; all coxae brown to dark brown; metatibia (except for darker spot on posterior 0.1) and part of metafemur (anterior 0.2 and posterior 0.1) yellow; body length: 3.03 mm; fore wing length: 3.22 mm. The shape and sculpture of T 1 and T 2, ocelli size, fore wing venation and color of tegula, humeral complex and legs distinguish this species among all others with T 2 sculptured but transverse and dark coxae.
Distribution.
Costa Rica.
Biology.
Solitary. Depressariidae: Gonionota Janzen 22, Gelechiidae: gelJanzen 01 Janzen 23.
DNA barcoding data.
BIN BOLD: AAI 9755 (4 sequences, 4 barcode compliant).
Etymology.
Named in honor of Dr. Christiana Agapakis of Gingko Bioworks in recognition of her warm and detailed 2022 welcome to representatives from GDFCF / ACG exploring the potential of a synthetic biology foundry with strong potential for non-damaging development of complex tropical biodiversity genomics as a potential product from wild tropical ecosystems, and therefore increasing their intact desirability by tropical societies.
description: Published as part of Fernandez-Triana, Jose L., Boudreault, Caroline, Whitfield, James B., Höcherl, Amelie, Smith, M. Alex, Hallwachs, Winnifred & Janzen, Daniel H., 2025, A revision of the parasitoid wasp genus Dolichogenidea Viereck (Hymenoptera, Braconidae) in the Neotropical region, with the description of 102 new species, pp. 1-250 in ZooKeys 1237 on pages 1-250, DOI: 10.3897/zookeys.1237.141007
One-loop Gravitational Bremsstrahlung and Waveforms from a Heavy-Mass Effective Field Theory
Creators: name: Brandhuber, Andreas
name: Brown, Graham R.
name: Chen, Gang
name: De Angelis, Stefano
name: Gowdy, Joshua
name: Travaglini, Gabriele
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Using a heavy-mass effective field theory (HEFT), we study gravitational-wave emission in the scattering of two spinless black holes or neutron stars of arbitrary masses at next-to-leading order in the Post-Minkowskian expansion. We compute the contributions to the one-loop scattering amplitude with four scalars and one graviton which are relevant to the calculation of the waveforms, also presenting expressions of classical tree-level amplitudes with four scalars and up to two radiated gravitons. The latter are obtained using a novel on-shell recursion relation for classical amplitudes with four scalars and an arbitrary number of gravitons. Our one-loop five-point amplitude is expressed in terms of a single family of master integrals with the principal value prescription for linearised massive propagators, which we evaluate using differential equations. In our HEFT approach all hyper-classical iterations and quantum corrections to the amplitude are dropped at the diagrammatic level, thereby computing directly contributions to classical physics. Our result exhibits the expected factorisation of infrared divergences, the correct soft limits, and highly nontrivial cancellations of spurious poles. Finally, using our amplitude result we compute numerically the corresponding next-to-leading corrections to the spectral waveforms and the far-field time-domain waveforms using the Newman-Penrose scalar $Ψ_4$.
description: 100 pages, sorry; v5: Small correction to KMOC's cut term in section 8.2.2. GitHub files updated
Low-lying zeros in families of holomorphic cusp forms: the weight aspect
Creators: name: Devin, Lucile
name: Fiorilli, Daniel
name: Södergren, Anders
Publisher: name: arXiv
Year: 2019
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: We study low-lying zeros of $L$-functions attached to holomorphic cusp forms of level $1$ and large weight. In this family, the Katz--Sarnak heuristic with orthogonal symmetry type was established in the work of Iwaniec, Luo and Sarnak for test functions $ϕ$ satisfying the condition supp$(\widehat ϕ) \subset(-2,2)$. We refine their density result by uncovering lower-order terms that exhibit a sharp transition when the support of $\widehat ϕ$ reaches the point $1$. In particular the first of these terms involves the quantity $\widehat ϕ(1)$ which appeared in previous work of Fouvry--Iwaniec and Rudnick in symplectic families. Our approach involves a careful analysis of the Petersson formula and circumvents the assumption of GRH for $\text{GL}(2)$ automorphic $L$-functions. Finally, when supp$(\widehat ϕ)\subset (-1,1)$ we obtain an unconditional estimate which is significantly more precise than the prediction of the $L$-functions Ratios Conjecture.
description: 18 pages
Effects of residual stress and peening on fatigue crack propagation from weld toes
Creators: name: Singh, N
name: Hellier, AK
name: Prusty, BG
name: Akrawi, D
name: Paradowska, AM
Publisher: name: UNSW Sydney
Year: 2014

description: Welding processes generally induce high tensile residual stresses. Along with the service loads, these tensile residual stresses contribute to high local stresses in the HAZ (Heat-Affected Zone) and at the weld toe, where there are weld imperfections and high local (‘hot-spot’) stresses. It is widely accepted that the reduction of tensile residual stresses by appropriate post-weld treatment will increase the fatigue life in the high-cycle regime. One such post-weld treatment is ultrasonic peening; the redistribution of tensile residual stresses and the relaxation of compressive stresses in the HAZ and weld toe region by ultrasonic peening have not been studied extensively. The residual stresses will be determined for a number of A350 grade black mild steel plate T-butt welds. Some will be as-welded (containing residual stresses), others will be ultrasonically peened. The through-thickness residual stresses in both cases will be measured by (non-destructive) neutron diffraction using the Kowari instrument at the ANSTO Bragg Institute, as well as the (destructive) contour method at the ANSTO Institute of Materials Engineering. Three identical welds (double side 2F horizontal position 3-pass 10mm fillet) will be manufactured using a semi-automatic GMAW (Gas Metal Arc Welding) process. Dimensions of the base plates will be 800x160x10mm and the attachment plates will be 100x160x10mm. One will be measured in the as-welded condition (weld 1), another after an ultrasonic peening treatment (weld 2), and the final one (weld 3) will be used as a stress-free reference sample as well as for hardness and microstructure investigation. The residual stress curves will be compared and examined to see if there is a typical parametric curve for all A350 grade structural steel T-butt welds. Fatigue testing will also be conducted.
description: AANSS 2014, AINSE-ANBUG Neutron Scattering Symposium; Australian Institute of Nuclear Science and Engineering, Lucas Heights; 2014-11-24 - 2014-11-25
Dolichogenidea claudiadoblesae Fernandez-Triana & Boudreault 2025, sp. nov.
Creators: name: Fernandez-Triana, Jose L.
name: Boudreault, Caroline
name: Whitfield, James B.
name: Höcherl, Amelie
name: Smith, M. Alex
name: Hallwachs, Winnifred
name: Janzen, Daniel H.
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Braconidae
Dolichogenidea
Dolichogenidea claudiadoblesae

description: Dolichogenidea claudiadoblesae Fernandez-Triana & Boudreault sp. nov.
Fig. 43 A – F
Type material.
Holotype. Costa Rica • Female, CNC; Guanacaste, Area de Conservación Guanacaste, Sector Santa Rosa, Area Administrativa; 10.8376, -85.6187; 295 m; 25.xii.2008; D. H. Janzen & W. Hallwachs leg.; Malaise trap; Voucher code: DHJPAR 0031810. Paratypes. Costa Rica • 7 Females, CNC; DHJPAR 0031862, DHJPAR 0031863, DHJPAR 0031585, DHJPAR 0031758, DHJPAR 0031684, DHJPAR 0031719, DHJPAR 0031844.
Diagnostic description.
Scutellar disc with coarse punctures; anterior half of mesopleuron and anteromesoscutum with relatively coarse punctures; propodeum areola comparatively broad (its height ~ 1.2 × its central width) and open anteriorly; T 1 and T 2 heavily sculptured with strong longitudinal striae; T 1 comparatively thin and mostly parallel-sided but posterior 0.1–0.3 slightly narrowing towards posterior margin; T 2 broadly trapezoidal in shape (with posterior margin slightly arcuate); ovipositor sheath ≤ 1.2 × metatibia length; ovipositor not sinuate; tegula and humeral complex yellow; pterostigma pale brown but centrally paler than margins; metacoxa entirely dark brown; metatibia entirely brown to dark brown; body length: 2.70–3.00 mm; fore wing length: 2.80–3.10 mm; BIN BOLD: AAD 2236, which is 5.61 % different from the nearest BIN in BOLD as of March 2022. The color of tegula, metacoxa, metatibia and pterostigma, and the sculpture of scutellar disc and anterior half of mesopleuron and anteromesoscutum separates this species from others with T 1 and T 2 heavily sculptured and T 1 comparatively thin.
Distribution.
Costa Rica.
Biology.
No host data available.
DNA barcoding data.
BIN BOLD: AAD 2236 (109 sequences, 109 barcode compliant).
Etymology.
Named in honor of Sra. Claudia Dobles of San Jose, Costa Rica in recognition of her support for her family, husband and the non-damaging biodevelopment of Costa Rica during his term as President (2018–2022).
description: Published as part of Fernandez-Triana, Jose L., Boudreault, Caroline, Whitfield, James B., Höcherl, Amelie, Smith, M. Alex, Hallwachs, Winnifred & Janzen, Daniel H., 2025, A revision of the parasitoid wasp genus Dolichogenidea Viereck (Hymenoptera, Braconidae) in the Neotropical region, with the description of 102 new species, pp. 1-250 in ZooKeys 1237 on pages 1-250, DOI: 10.3897/zookeys.1237.141007
The Scalar Mode of Gravity
Creators: name: Arik, Metin
name: Tok, Tarik
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider the scalar mode of gravity as expressed by a conformal factor of the metric and present a model motivated by the Jordan-Brans-Dicke action. The reduced action provides a Lagrangian density in Minkowski space which exhibits a massive particle and an expanding space-time through a mechanism which is similar to the Higgs mechanism.
description: 7 pages; typos corrected
Learning Task-Specific Strategies for Accelerated MRI
Creators: name: Wu, Zihui
name: Yin, Tianwei
name: Sun, Yu
name: Frost, Robert
name: van der Kouwe, Andre
name: Dalca, Adrian V.
name: Bouman, Katherine L.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Compressed sensing magnetic resonance imaging (CS-MRI) seeks to recover visual information from subsampled measurements for diagnostic tasks. Traditional CS-MRI methods often separately address measurement subsampling, image reconstruction, and task prediction, resulting in a suboptimal end-to-end performance. In this work, we propose TACKLE as a unified co-design framework for jointly optimizing subsampling, reconstruction, and prediction strategies for the performance on downstream tasks. The naïve approach of simply appending a task prediction module and training with a task-specific loss leads to suboptimal downstream performance. Instead, we develop a training procedure where a backbone architecture is first trained for a generic pre-training task (image reconstruction in our case), and then fine-tuned for different downstream tasks with a prediction head. Experimental results on multiple public MRI datasets show that TACKLE achieves an improved performance on various tasks over traditional CS-MRI methods. We also demonstrate that TACKLE is robust to distribution shifts by showing that it generalizes to a new dataset we experimentally collected using different acquisition setups from the training data. Without additional fine-tuning, TACKLE leads to both numerical and visual improvements compared to existing baselines. We have further implemented a learned 4$\times$-accelerated sequence on a Siemens 3T MRI Skyra scanner. Compared to the fully-sampling scan that takes 335 seconds, our optimized sequence only takes 84 seconds, achieving a four-fold time reduction as desired, while maintaining high performance.
description: Our code is available at https://github.com/zihuiwu/TACKLE. More information can be found at http://imaging.cms.caltech.edu/tackle/
Self-testing of a single quantum device under computational assumptions
Creators: name: Metger, Tony
name: Vidick, Thomas
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Self-testing is a method to characterise an arbitrary quantum system based only on its classical input-output correlations, and plays an important role in device-independent quantum information processing as well as quantum complexity theory. Prior works on self-testing require the assumption that the system's state is shared among multiple parties that only perform local measurements and cannot communicate. Here, we replace the setting of multiple non-communicating parties, which is difficult to enforce in practice, by a single computationally bounded party. Specifically, we construct a protocol that allows a classical verifier to robustly certify that a single computationally bounded quantum device must have prepared a Bell pair and performed single-qubit measurements on it, up to a change of basis applied to both the device's state and measurements. This means that under computational assumptions, the verifier is able to certify the presence of entanglement, a property usually closely associated with two separated subsystems, inside a single quantum device. To achieve this, we build on techniques first introduced by Brakerski et al. (2018) and Mahadev (2018) which allow a classical verifier to constrain the actions of a quantum device assuming the device does not break post-quantum cryptography.
description: 58 pages, published in Quantum
Does Principal Component Analysis Preserve the Sparsity in Sparse Weak Factor Models?
Creators: name: Wei, Jie
name: Zhang, Yonghui
Publisher: name: arXiv
Year: 2023
Subjects: subject: Econometrics (econ.EM)
subject: FOS: Economics and business

description: This paper studies the principal component (PC) method-based estimation of weak factor models with sparse loadings. We uncover an intrinsic near-sparsity preservation property for the PC estimators of loadings, which comes from the approximately upper triangular (block) structure of the rotation matrix. It implies an asymmetric relationship among factors: the rotated loadings for a stronger factor can be contaminated by those from a weaker one, but the loadings for a weaker factor is almost free of the impact of those from a stronger one. More importantly, the finding implies that there is no need to use complicated penalties to sparsify the loading estimators. Instead, we adopt a simple screening method to recover the sparsity and construct estimators for various factor strengths. In addition, for sparse weak factor models, we provide a singular value thresholding-based approach to determine the number of factors and establish uniform convergence rates for PC estimators, which complement Bai and Ng (2023). The accuracy and efficiency of the proposed estimators are investigated via Monte Carlo simulations. The application to the FRED-QD dataset reveals the underlying factor strengths and loading sparsity as well as their dynamic features.
description: 54 pages, 5 figures
Dolichogenidea croceicornis Fernandez-Triana & Boudreault & Whitfield & Höcherl & Smith & Hallwachs & Janzen 2025, comb. nov.
Creators: name: Fernandez-Triana, Jose L.
name: Boudreault, Caroline
name: Whitfield, James B.
name: Höcherl, Amelie
name: Smith, M. Alex
name: Hallwachs, Winnifred
name: Janzen, Daniel H.
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Braconidae
Dolichogenidea
Dolichogenidea croceicornis

description: Dolichogenidea croceicornis (Muesebeck, 1958) comb. nov.
Fig. 44 A – F
Notes.
We have examined the holotype (USNM) and this species clearly belongs to Dolichogenidea, based on the vannal lobe entirely setose.
description: Published as part of Fernandez-Triana, Jose L., Boudreault, Caroline, Whitfield, James B., Höcherl, Amelie, Smith, M. Alex, Hallwachs, Winnifred & Janzen, Daniel H., 2025, A revision of the parasitoid wasp genus Dolichogenidea Viereck (Hymenoptera, Braconidae) in the Neotropical region, with the description of 102 new species, pp. 1-250 in ZooKeys 1237 on pages 1-250, DOI: 10.3897/zookeys.1237.141007
Geometry at the infinity of the space of positive metrics: test configurations, geodesic rays and chordal distances
Creators: name: Finski, Siarhei
Publisher: name: arXiv
Year: 2023
Subjects: subject: Differential Geometry (math.DG)
subject: Algebraic Geometry (math.AG)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 53C55, 32U15, 32W20, 32P05, 32Q05, 14G22, 32A25

description: From the work of Phong and Sturm in 2007, for a polarised projective manifold and an ample test configuration, one can associate the geodesic ray of plurisubharmonic metrics on the polarising line bundle using the solution of the Monge-Ampère equation on an equivariant resolution of singularities of the test configuration. We prove that the Mabuchi chordal distance between the geodesic rays associated with two ample test configurations coincides with the spectral distance between the associated filtrations on the section ring.
 This gives an algebraic description of the boundary at the infinity of the space of positive metrics, viewed - as it is usually done for spaces of negative curvature - through geodesic rays.
Ultrafast charge carrier separation in Potassium-intercalated endohedral metallofullerene Sc$_3$N@C$_{80}$ thin films
Creators: name: Emmerich, Sebastian
name: Hedwig, Sebastian
name: Cinchetti, Mirko
name: Stadtmüller, Benjamin
name: Aeschlimann, Martin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Molecular materials have emerged as highly tunable materials for photovoltaic and light-harvesting applications. The most severe challenge of this class of materials is the trapping of charge carriers in bound electron-hole pairs, which severely limits the free charge carrier generation. Here, we demonstrate a significant modification of the exciton dynamics of thin films of endohedral metallofullerene complexes upon alkali metal intercalation. For the exemplary case of Sc$_3$N@C$_{80}$ thin films, we show that potassium intercalation results in an additional relaxation channel for the optically excited charge-transfer excitons that prevents the trapping of excitons in a long-lived Frenkel exciton-like state. Instead, K intercalation leads to an ultrafast exciton dissociation coinciding most likely with the generation of free charge carriers. In this way, we propose alkali metal doping of molecular films as a novel approach to enhance the light to-charge carrier conversion efficiency in photovoltaic materials.
HyperEmbed: Tradeoffs Between Resources and Performance in NLP Tasks with Hyperdimensional Computing enabled Embedding of n-gram Statistics
Creators: name: Alonso, Pedro
name: Shridhar, Kumar
name: Kleyko, Denis
name: Osipov, Evgeny
name: Liwicki, Marcus
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: Recent advances in Deep Learning have led to a significant performance increase on several NLP tasks, however, the models become more and more computationally demanding. Therefore, this paper tackles the domain of computationally efficient algorithms for NLP tasks. In particular, it investigates distributed representations of n-gram statistics of texts. The representations are formed using hyperdimensional computing enabled embedding. These representations then serve as features, which are used as input to standard classifiers. We investigate the applicability of the embedding on one large and three small standard datasets for classification tasks using nine classifiers. The embedding achieved on par F1 scores while decreasing the time and memory requirements by several times compared to the conventional n-gram statistics, e.g., for one of the classifiers on a small dataset, the memory reduction was 6.18 times; while train and test speed-ups were 4.62 and 3.84 times, respectively. For many classifiers on the large dataset, memory reduction was ca. 100 times and train and test speed-ups were over 100 times. Importantly, the usage of distributed representations formed via hyperdimensional computing allows dissecting strict dependency between the dimensionality of the representation and n-gram size, thus, opening a room for tradeoffs.
description: 9 pages, 1 figure, 6 tables
MPEC 2024-K130 : OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: OBSERVATIONS AND ORBITS OF COMETS AND A/ OBJECTS

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Normal density and moment of inertia of a moving superfluid
Creators: name: Zhang, Yi-Cai
name: Song, Shu-Wei
name: Chen, Gang
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: In this work, the normal density $ρ_n$ and moment of inertia of a moving superfluid are investigated. We find that, even at zero temperature, there exists a finite normal density for the moving superfluid. When the velocity of superfluid reaches sound velocity, the normal density becomes total mass density $ρ$, which indicates that the system losses superfluidity. At the same time, the Landau's critical velocity also becomes zero. The existence of the non-zero normal density is attributed to the coupling between the motion of superflow and density fluctuation in transverse directions. With Josephson relation, the superfluid density $ρ_s$ is also calculated and the identity $ρ_s+ρ_n=ρ$ holds. Further more, we find that the finite normal density also results in a quantized moment of inertia in a moving superfluid trapped by a ring. The normal density and moment of inertia at zero temperature could be verified experimentally by measuring the angular momentum of a moving superfluid in a ring trap.
description: 6 pages
A Heterogeneous Multiscale Method for Efficient Simulation of Power Systems with Inverter-Based Resources
Creators: name: Huang, Kaiyang
name: Xiong, Min
name: Liu, Yang
name: Sun, Kai
Publisher: name: arXiv
Year: 2025
Subjects: subject: Systems and Control (eess.SY)
subject: Numerical Analysis (math.NA)
subject: Optimization and Control (math.OC)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Mathematics

description: As inverter-based resources (IBRs) penetrate power systems, the dynamics become more complex, exhibiting multiple timescales, including electromagnetic transient (EMT) dynamics of power electronic controllers and electromechanical dynamics of synchronous generators. Consequently, the power system model becomes highly stiff, posing a challenge for efficient simulation using existing methods that focus on dynamics within a single timescale. This paper proposes a Heterogeneous Multiscale Method for highly efficient multi-timescale simulation of a power system represented by its EMT model. The new method alternates between the microscopic EMT model of the system and an automatically reduced macroscopic model, varying the step size accordingly to achieve significant acceleration while maintaining accuracy in both fast and slow dynamics of interests. It also incorporates a semi-analytical solution method to enable a more adaptive variable-step mechanism. The new simulation method is illustrated using a two-area system and is then tested on a detailed EMT model of the IEEE 39-bus system.
description: IEEE Transactions on Power Systems, Published in Feb 2025 via IEEExplore Early Access
Linear Ultrastrong Optomechanical Interaction
Creators: name: Dare, Kahan
name: Hansen, Jannek J.
name: Coroli, Iurie
name: Johnson, Aisling
name: Aspelmeyer, Markus
name: Delić, Uroš
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Light-matter interaction in the ultrastrong coupling regime can be used to generate exotic ground states with two-mode squeezing and may be of use for quantum enhanced sensing. Current demonstrations of ultrastrong coupling have been performed in fundamentally nonlinear systems. We report a cavity optomechanical system that operates in the linear coupling regime, reaching a maximum coupling of $g_x/Ω_x=0.55\pm 0.02$. Such a system is inherently unstable, which may in the future enable strong mechanical squeezing.
Enforcing stationarity through the prior in vector autoregressions
Creators: name: Heaps, Sarah E.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: Stationarity is a very common assumption in time series analysis. A vector autoregressive process is stationary if and only if the roots of its characteristic equation lie outside the unit circle, constraining the autoregressive coefficient matrices to lie in the stationary region. However, the stationary region has a highly complex geometry which impedes specification of a prior distribution. In this work, an unconstrained reparameterization of a stationary vector autoregression is presented. The new parameters are partial autocorrelation matrices, which are interpretable, and can be transformed bijectively to the space of unconstrained square matrices through a simple mapping of their singular values. This transformation preserves various structural forms of the partial autocorrelation matrices and readily facilitates specification of a prior. Properties of this prior are described along with an important special case which is exchangeable with respect to the order of the elements in the observation vector. Posterior inference and computation are described and implemented using Hamiltonian Monte Carlo via Stan. The prior and inferential procedures are illustrated with an application to a macroeconomic time series which highlights the benefits of enforcing stationarity and encouraging shrinkage towards a sensible parametric structure. Supplementary materials for this article are available in the ancillary files section.
description: Accepted for publication in the Journal of Computational and Graphical Statistics
Proper network randomization is key to assessing social balance
Creators: name: Hao, Bingjie
name: Kovács, István A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Social and Information Networks (cs.SI)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Studying significant network patterns, known as graphlets (or motifs), has been a popular approach to understand the underlying organizing principles of complex networks. Statistical significance is routinely assessed by comparing to null models that randomize the connections while preserving some key aspects of the data. However, in signed networks, capturing both positive (friendly) and negative (hostile) relations, the results have been controversial and also at odds with the classical theory of structural balance. We show that this is largely due to the fact that large-scale signed networks exhibit a poor correlation between the number of positive and negative ties of each node. As a solution, here we propose a null model based on the maximum entropy framework that preserves both the signed degrees and the network topology (STP randomization). With STP randomization the results change qualitatively and most social networks consistently satisfy strong structural balance, both at the level of triangles and larger graphlets. We propose a potential underlying mechanism of the observed patterns in signed social networks and outline further applications of STP randomization.
Dolichogenidea dole Fernandez-Triana & Boudreault 2025, sp. nov.
Creators: name: Fernandez-Triana, Jose L.
name: Boudreault, Caroline
name: Whitfield, James B.
name: Höcherl, Amelie
name: Smith, M. Alex
name: Hallwachs, Winnifred
name: Janzen, Daniel H.
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Braconidae
Dolichogenidea
Dolichogenidea dole

description: Dolichogenidea dole Fernandez-Triana & Boudreault sp. nov.
Fig. 45 A – G
Type material.
Holotype. Costa Rica • Female, CNC; Guanacaste, Area de Conservación Guanacaste, Sector Cacao, Sendero Arenales; 10.92471, -85.46738; 1,080 m; 18.xii.2008; D. H. Janzen & W. Hallwachs leg.; Malaise trap; Voucher code: DHJPAR 0031280.
Diagnostic description.
T 1 length medially ~ 3.0 × its width at posterior margin; T 2 more or less trapezoidal in shape; T 2 sculptured around margins, centrally smooth; hypopygium with single, small pleat; ovipositor sheath <0.5 × metatibia length; all coxae brown to dark brown; metafemur entirely to mostly yellow (at most with darker spot on posterior 0.3 or less); body length 2.59 mm; fore wing length: 2.56 mm. Among all species with dark coxae and T 2 at least partially smooth, D. dole can be distinguished by its almost unpleated hypopygium and short ovipositor sheath.
Distribution.
Costa Rica.
Biology.
No host data available.
DNA barcoding data.
BIN BOLD: AAM 5739 (1 sequence, barcode compliant).
Etymology.
Named in honor of the Dole Pineapple Company plantation in the central northern lowlands of what used to be Costa Rican Caribbean coastal rain forest, for being willing to support Malaise trapping for all insects for the Costa Rican BioAlfa DNA barcode library that live in the plantation and adjacent secondary successional rain forest in 2022, and to understand the biodiversity dynamics of the crop itself.
description: Published as part of Fernandez-Triana, Jose L., Boudreault, Caroline, Whitfield, James B., Höcherl, Amelie, Smith, M. Alex, Hallwachs, Winnifred & Janzen, Daniel H., 2025, A revision of the parasitoid wasp genus Dolichogenidea Viereck (Hymenoptera, Braconidae) in the Neotropical region, with the description of 102 new species, pp. 1-250 in ZooKeys 1237 on pages 1-250, DOI: 10.3897/zookeys.1237.141007
THE FIRE DISTINGUISHER: A BASELINE STUDY OF SEMI-ARID KARST DRIP WATERS IN WILDMAN’S CAVE AT WOMBEYAN, NSW, AUSTRALIA
Creators: name: Baker, AB
name: Flemons
Publisher: name: UNSW Sydney
Year: 2015

description: This study addresses the impact of fire on karst systems in a semi-arid environment. There is limited knowledge of hydrological and geochemical changes that result from a fire over a karst system. Soil science literature has shown that fire can change surface properties and from this it has been hypothesized that these impacts will be mirrored in an underlying cave (see Figure). This project is the first phase of a pre/post-fire study of organic matter, drip rates, trace metal composition, and stable isotope composition changes in a semi-arid cave system. This project aims establishes the baseline hydrogeochemical processes at Wildman’s cave, at Wombeyan in NSW, Australia. The Wildman’s cave site has not been studied previously, so this study adds to expanding literature on cave systems. This pre-fire monitoring provides a new dataset for semiarid karst processes. We report the first 8 months of an ongoing dataset, obtained through collection of dripwater samples, with drip loggers indicating drip rates over the same period. Dripwaters were analysed for pH and EC, cation/anion content, organic matter content and stable isotope composition. Following the successful completion of this baseline study, post fire data will be obtained via a controlled burn. This will expand on current knowledge of the use of speleothems as accurate records of past climates and fire history.
description: American Geophysical Union Fall Meeting; San Francisco; 2015-12-14 - 2015-12-18
Rates of convergence for the continuum limit of nondominated sorting
Creators: name: Cook, Brendan
name: Calder, Jeff
Publisher: name: arXiv
Year: 2020
Subjects: subject: Analysis of PDEs (math.AP)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 35D40 (Primary), 60F15, 60C05 (Secondary)

description: Nondominated sorting is a discrete process that sorts points in Euclidean space according to the coordinatewise partial order, and is used to rank feasible solutions to multiobjective optimization problems. It was previously shown that nondominated sorting of random points has a Hamilton-Jacobi equation continuum limit. We prove quantitative error estimates for the convergence of nondominated sorting to its continuum limit Hamilton-Jacobi equation. Our proof uses the maximum principle and viscosity solution machinery, along with new semiconvexity estimates for domains with corner singularities.
Relaxation dynamics in excited helium nanodroplets probed with high resolution, time-resolved photoelectron spectroscopy
Creators: name: LaForge, A. C.
name: Asmussen, J. D.
name: Bastian, B.
name: Bonanomi, M.
name: De, C. Callegari S.
name: Di Fraia, M.
name: Gorman, L.
name: Hartweg, S.
name: Krishnan, S. R.
name: Kling, M. F.
name: Mishra, D.
name: Mandal, S.
name: Ngai, A.
name: Pal, N.
name: Plekan, O.
name: Prince, K. C.
name: Rosenberger, P.
name: Serrata, E. Aguirre
name: Stienkemeier, F.
name: Berrah, N.
name: Mudrich, M.
Publisher: name: arXiv
Year: 2025
Subjects: subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: FOS: Physical sciences

description: Superfluid helium nanodroplets are often considered as transparent and chemically inert nanometer-sized cryo-matrices for high-resolution or time-resolved spectroscopy of embedded molecules and clusters. On the other hand, when the helium nanodroplets are resonantly excited with XUV radiation, a multitude of ultrafast processes are initiated, such as relaxation into metastable states, formation of nanoscopic bubbles or excimers, and autoionization channels generating low-energy free electrons. Here, we discuss the full spectrum of ultrafast relaxation processes observed when helium nanodroplets are electronically excited. In particular, we perform an in-depth study of the relaxation dynamics occurring in the lowest 1s2s and 1s2p droplet bands using high resolution, time-resolved photoelectron spectroscopy. The simplified excitation scheme and improved resolution allow us to identify the relaxation into metastable triplet and excimer states even when exciting below the droplets' autoionization threshold, unobserved in previous studies.
QFT based quantum arithmetic logic unit on IBM quantum computer
Creators: name: Çakmak, Selçuk
name: Kurt, Murat
name: Gençten, Azmi
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this study, we constructed a primitive quantum arithmetic logic unit (qALU) based on the quantum Fourier transform. The qALU is capable of performing arithmetic ADD (addition) and logic NAND gate operations. We presented two versions of the arithmetic logic unit, with two-input and four-input capabilities. By comparing the required number of quantum gates for serial and parallel architectures in executing arithmetic addition, we evaluated the performance. We executed our quantum Fourier transform based qALU design on real quantum computer hardware provided by IBM. The results demonstrated that the proposed circuit can perform arithmetic and logic operations with a high success rate. Furthermore, we discussed the potential implementation of qALU circuit in the field of computer science, highlighting the possibility of constructing soft-core processor on quantum processing unit.
description: 10 pages, 6 figures, Comments are welcome
Amhara also known as “Amara”
Creators: name: Pitek, Emily
Publisher: name: Database of Religious History (DRH)
Year: 2018

description: The Amhara have historically dominated Ethiopia through military, government, and religious activity. Amharic was the official language of Ethiopia until the 1990's, and the Amhara people constitute just under one-third of Ethiopia's population. Amhara society is deeply rooted in Christianity, and "the Amhara themselves often employ the term 'Amhara' synonymously with 'Ethiopian Orthodox (Monophysite) Christian,' although their own, more precise expression for this religion is 'Tewahedo' (Orthodox)" (Messing and Skoggard, 1998). The religious group is thus considered to be coterminous with the society throughout this entry. This entry focuses on the Gondar District of Ethiopia, ca. 1953.
Diboson production in the SMEFT from gluon fusion
Creators: name: Rossia, Alejo N.
name: Thomas, Marion O. A.
name: Vryonidou, Eleni
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Precision measurements of diboson production at the LHC is an important probe of the limits of the Standard Model. The gluon-fusion channel of this process offers a connection between the Higgs and top sectors. We study in a systematic way gluon-induced diboson production in the Standard Model Effective Field Theory. We compute the amplitudes of double Higgs, double $Z/W$ and associated $ZH$ production at one loop and with up to one insertion of a dimension-6 operator. We study their high-energy limit and identify to which operators each channel could be most sensitive. To illustrate the relevance of these processes, we perform a phenomenological study of associated $ZH$ production. We show that for some top operators the gluon-induced channel can offer competitive sensitivity to constraints obtained from top quark production processes.
description: 48 pages including appendices, version accepted by JHEP
Development of learning management model based on buddhism to enhance teamwork skills and problem soiving skillsfor undergraduate students
Creators: name: Phinla, Wipada
name: Phinla, Wipapan
Publisher: name: figshare
Year: 2025
Subjects: classificationCode: 390102
subject: Curriculum and pedagogy theory and development

description: The objective of this study. To develop a learning management model based on Buddhist principles. To promote teamwork and problem solving skills. And study the results of use learning management model based on Buddhist principles. To promote teamwork and problem solving skills. The results found that: A form of learning by Buddhist. To promote skills, teamwork and problem solving skills for undergraduate students elements : 1) Systematic learning management, 2) Students do activities according to the steps, 3) Self-knowledge, 4) Students work in teams and solve problems and things which the learning management model developed has a 5step learning management process : 1) Build trust, 2) To investigate rationalizing, 3) Searched premise, 4) Analyze reality check, and 5) Judging goodness. The result of the model showed: 1) After studying according to the format, students experimental and control groups have knowledge and understanding in the course. The truth of life leads the teacher higher than before learning at the statistical significance level of .05. 2) After studying according to the students experimental and control groups, the result of teamwork skill evaluation was higher than before learning at the statistical significance level of .05. 3) After the studying, according to the students experimental and control groups, the results of problem solving skills evaluation were higher than before learning at the statistical significance level of .05. 4) Students experimental and control groups are satisfied with the learning management model according to Buddhism. To promote teamwork and problem solving skills for undergraduate students is at the highest level.
Dolichogenidea encruzilhada Fernandez-Triana & Boudreault 2025, sp. nov.
Creators: name: Fernandez-Triana, Jose L.
name: Boudreault, Caroline
name: Whitfield, James B.
name: Höcherl, Amelie
name: Smith, M. Alex
name: Hallwachs, Winnifred
name: Janzen, Daniel H.
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Braconidae
Dolichogenidea
Dolichogenidea encruzilhada

description: Dolichogenidea encruzilhada Fernandez-Triana & Boudreault sp. nov.
Fig. 46 A – F
Type material.
Holotype. Brazil • Female, CNC; Bahia, Encruzilhada; 980 m; xi.1974; M. Alvarenga leg.; voucher code: CNC 1180167.
Diagnostic description.
T 1 strongly sculptured with longitudinal striae; T 1 parallel-sided, 1.3 × as long as its width at posterior margin; T 2 entirely smooth and transverse; ovipositor sheath around same length (1.15 ×) than metatibia length; tegula and humeral complex yellow; pterostigma mostly brown with pale spot at base; all coxae brown; meso- and metatrochantelli dark brown to black; profemur yellow, meso- and metafemora brown; metatibia mostly brown, with only anterior 0.2 yellow; body mostly dark brown to pale brown; comparatively smaller species; body length: 2.30 mm; fore wing length: 2.60 mm. Among species with T 1 strongly sculptured but T 2 smooth and transverse, this species can be recognized by the coloration of tegula, humeral complex and legs, pterostigma and length of ovipositor sheaths. D. luishamiltoni is similar but can be differentiated from D. encruzilhada because the former has darker coloration, slightly broader T 1 and comparatively larger body size.
Distribution.
Brazil (BA).
Biology.
No host data available.
DNA barcoding data.
No data.
Etymology.
Named after the municipality of Encruzilhada, where the holotype was collected, in the Atlantic Forest (Mata Atlântica). This is a region characterized by high biodiversity and endemism, but also needing conservation due to its high degree of deforestation threatening many plant and animal species with extinction.
description: Published as part of Fernandez-Triana, Jose L., Boudreault, Caroline, Whitfield, James B., Höcherl, Amelie, Smith, M. Alex, Hallwachs, Winnifred & Janzen, Daniel H., 2025, A revision of the parasitoid wasp genus Dolichogenidea Viereck (Hymenoptera, Braconidae) in the Neotropical region, with the description of 102 new species, pp. 1-250 in ZooKeys 1237 on pages 1-250, DOI: 10.3897/zookeys.1237.141007