cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Data Collections Explorer
Creators: name: Ost, Philipp
Publisher: name: Karlsruher Institut für Technologie (KIT)
Year: 2022

description: For research data to be used efficiently, it must be easy to find and access. This is a requirement in all areas of science. The Data Collections Explorer, developed within NFDI4Ing for the engineering sciences, targets these needs. It is an information system that provides an overview of research data repositories, archives, databases as well as individual datasets published in the field. Two use cases are considered: 1. Scientists searching for data sets. Are there datasets available to aid in your research? Are there benchmarks available to check your results? Are these datasets available under an open access license? 2. Scientists aiming to publish data sets: Among community-specific repositories, which ones are suitable to publish the research data? Do repositories restrict the size of the datasets that can be uploaded and if so, what are the limits? Are publication fees charged and if so, how much is charged? To facilitate answering these questions, the Data Collections Explorer provides both a free text search and filters for type of service, subject area, and access license. Where appropriate and available, information on data size limits and publishing fees is provided. The Data Collections Explorer complements re3data, as it includes entries which are outside its scope or which are not listed. This concept is not limited to the engineering sciences. To broaden the impact, we are currently working on expanding the Data Collections Explorer to the material sciences and engineering community within NFDI- MatWerk. This work is supported by the NFDI4Ing consortium, the German Research Foundation (DFG), the research program ‘Engineering Digital Futures’ by the Helmholtz Research Association and the Helmholtz Metadata Collaboration (HMC) Platform.
Anomalous non-additive dispersion interactions in systems of three one-dimensional wires
Creators: name: Misquitta, Alston J.
name: Maezono, Ryo
name: Drummond, Neil D.
name: Stone, Anthony J.
name: Needs, Richard J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: Computational Physics (physics.comp-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The non-additive dispersion contribution to the binding energy of three one-dimensional (1D) wires is investigated using wires modelled by (i) chains of hydrogen atoms and (ii) homogeneous electron gases. We demonstrate that the non-additive dispersion contribution to the binding energy is significantly enhanced compared with that expected from Axilrod-Teller-Muto-type triple-dipole summations and follows a different power-law decay with separation. The triwire non-additive dispersion for 1D electron gases scales according to the power law $d^{-β}$, where $d$ is the wire separation, with exponents $β(r_s)$ smaller than 3 and slightly increasing with $r_s$ from 2.4 at $r_s = 1$ to 2.9 at $r_s=10$, where $r_s$ is the density parameter of the 1D electron gas. This is in good agreement with the exponent $β=3$ suggested by the leading-order charge-flow contribution to the triwire non-additivity, and is a significantly slower decay than the $\sim d^{-7}$ behaviour that would be expected from triple-dipole summations.
description: 10 pages, 8 figures, 1 table
Orbitally controlled quantum Hall states in decoupled two-bilayer graphene sheets
Creators: name: Kim, Soyun
name: Kim, Dohun
name: Watanabe, Kenji
name: Taniguchi, Takashi
name: Smet, Jurgen. H.
name: Kim, Youngwook
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report on integer and fractional quantum Hall states in a stack of two twisted Bernal bilayer graphene sheets. By exploiting the momentum mismatch in reciprocal space, we suppress single particle tunneling between both bilayers. Since the bilayers are spatially separated by only 0.34 nm, the stack benefits from strong interlayer Coulomb interactions. These interactions can cause the formation of a Bose-Einstein condensate. Indeed, such a condensate is observed for half filling in each bilayer sheet. However, only when the partially filled levels have orbital index 1. It is absent for partially filled levels with orbital index 0. This discrepancy is tentatively attributed to the role of skyrmion/anti-skyrmion pair excitations and the dependence of the energy of these excitations on the orbital index. The application of asymmetric top and bottom gate voltages enables to influence the orbital nature of the electronic states of the graphene bilayers at the chemical potential and to navigate in an orbital mixed space. The latter hosts an even denominator fractional quantum Hall state at total filling -3/2. Our observations suggest a unique edge reconstruction involving both electrons and chiral p-wave composite fermions.
Maximum norm a posteriori error estimates for convection–diffusion problems
Creators: name: Demlow, Alan
name: Franz, Sebastian
name: Kopteva, Natalia
Publisher: name: University of Limerick
Year: 2023
Subjects: classificationCode: 4905
subject: Statistics
subject: FOS: Mathematics
classificationCode: 49
subject: Mathematical sciences

description: We prove residual-type a posteriori error estimates in the maximum norm for a linear scalar elliptic convection–diffusion problem that may be singularly perturbed. Similar error analysis in the energy norm by Verfürth indicates that a dual norm of the convective derivative of the error must be added to the natural energy norm in order for the natural residual estimator to be reliable and efficient. We show that the situation is similar for the maximum norm. In particular, we define a mesh-dependent weighted seminorm of the convective error, which functions as a maximum-norm counterpart to the dual norm used in the energy norm setting. The total error is then defined as the sum of this seminorm, the maximum norm of the error and data oscillation. The natural maximum norm residual error estimator is shown to be equivalent to this total error notion, with constant independent of singular perturbation parameters. These estimates are proved under the assumption that certain natural estimates hold for the Green’s function for the problem at hand. Numerical experiments confirm that our estimators effectively capture the maximum-norm error behavior for singularly perturbed problems, and can effectively drive adaptive refinement in order to capture layer phenomena.
Neusticomys Anthony 1921
Creators: name: Musser, Guy G.
name: Carleton, Michael D.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Muridae
Neusticomys

description: Neusticomys Anthony, 1921. Am. Mus. Novit., 20:2. TYPE SPECIES: Neusticomys monticolus Anthony, 1921. SYNONYMS: Daptomys. COMMENTS: Ichthyomyine. Phylogenetic relationships studied by Voss (1988), who allocated Daptomys as a full synonym.
description: Published as part of Guy G. Musser & Michael D. Carleton, 1993, Order Rodentia - Family Muridae, pp. 501-755 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 714, DOI: 10.5281/zenodo.7353098
description: {"references": ["Voss, R. S. 1988. Systematics and ecology of ichthyomyine rodents (Muroidea): Patterns of morphological evolution in a small adaptive radiation. Bulletin of the American Museum of Natural History, 188: 259 - 493."]}
Hall anomaly and vortex charge in Bi$_2$Sr$_2$CaCu$_2$O$_x$
Creators: name: Nitzav, Yuval
name: Kanigel, Amit
Publisher: name: arXiv
Year: 2023
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We present a systematic study of the Hall conductance in Bi$_2$Sr$_2$CaCu$_2$O$_x$ (Bi2212) thin films over a large range of doping. We find that in a large part of the phase diagram the Hall coefficient changes sign as a function of temperature in the flux-flow regime. By comparing data from many samples, we show that the sign reversal is tied to the superconducting transition and is not a result of a competing order. We then compare our data to the predictions of the Bardeen-Stephan model and show that in all samples there is an additional negative contribution to the Hall conductivity. We extract from the negative excess Hall a vortex-charge that is found to be strongly doping dependent.
SLAAASh and the ASL Deaf Communities (or "so many gifs!’')
Creators: name: Hochgesang, Julie
Publisher: name: figshare
Year: 2020
Subjects: subject: 200405 Language in Culture and Society (Sociolinguistics)
subject: FOS: Languages and literature
subject: Linguistics

description: Citation: Hochgesang, J. A. (2018). SLAAASh and the ASL Deaf Communities (or "so many gifs!’'). In M. Bono, E. Efthimiou, S.-E. Fotinea, T. Hanke, J. A. Hochgesang, J. Kristoffersen, J. Mesch, & Y. Osugi (Eds.), Proceedings of the LREC2018 8th Workshop on the Representation and Processing of Sign Languages: Involving the Language Community (pp. 63–68). European Language Resources Association (ELRA). https://www.sign-lang.uni-hamburg.de/lrec/lrec/pubs/18049.pdf
An analysis of HCN observations of the Circumnuclear Disk at the galactic centre
Creators: name: Smith, Ian L
name: Wardle, Mark
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The Circumnuclear Disk (CND) is a torus of dust and molecular gas rotating about the galactic centre and extending from approximately 1.6pc to 7pc from the central massive black hole, SgrA*. Large Velocity Gradient modelling of the intensities of the HCN 1-0, 3-2 and 4-3 transitions is used to infer hydrogen density and HCN optical depth. From HCN observations we find the molecular hydrogen density ranges from 0.1 to 2 $\times$ 10$^{6}$ cm$^{-3}$, about an order of magnitude less than inferred previously. The 1-0 line is weakly inverted with line-centre optical depth approx $-$0.1, in stark contrast to earlier estimates of 4. The estimated mass of the ring is approximately 3 $-$ 4 $\times$ 10$^{5}$M$_{\odot}$ consistent with estimates based on thermal dust emission. The tidal shear in the disk implies that star formation is not expected to occur without some significant triggering event.
description: 17 pages, 8 figures, 7 tables (including 3 landscape tables generated with 2 separate Latex files)
Fluctuations in strongly coupled cosmologies
Creators: name: Bonometto, Silvio A.
name: Mainini, Roberto
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: In the early Universe, a dual component made of coupled CDM and a scalar field $Φ$, if their coupling $β> \sqrt{3}/2$, owns an attractor solution, making them a stationary fraction of cosmic energy during the radiation dominated era. Along the attractor, both such components expand $\propto a^{-4}$ and have early density parameters $Ω_{d} = 1/ (4β^2)$ and $Ω_c= 2, Ω_d$ (field and CDM, respectively). In a previous paper it was shown that, if a further component, expanding $\propto a^{-3}$, breaks such stationary expansion at $z \sim 3$--$5 \times 10^3$, cosmic components gradually acquire densities consistent with observations. This paper, first of all, considers the case that this component is warm. However, its main topic is the analysis of fluctuation evolution: out of horizon modes are then determined; their entry into horizon is numerically evaluated as well as the dependence of Meszaros effect on the coupling $β$; finally, we compute: (i) transfer function and linear spectral function; (ii) CMB $C_l$ spectra. Both are close to standard $Λ$CDM models; in particular, the former one can be so down to a scale smaller than Milky Way, in spite of its main DM component being made of particles of mass $<1$ keV. The previously coupled CDM component, whose present density parameter is $\cal O$$(10^{-3})$, exhibits wider fluctuations $δρ/ρ$, but approximately $β$-independent $δρ$ values. We discuss how lower scale features of these cosmologies might ease quite a few problems that $Λ$CDM does not easily solve.
description: 25 pages, 7 figures, accepted for publication on JCAP; updated to match the published version
Correlation measurements with on-off detectors
Creators: name: Sperling, J.
name: Vogel, W.
name: Agarwal, G. S.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a general method to detect nonclassical radiation fields with systems of on-off detectors. We especially study higher order correlations for the identification of nonclassical radiation. This allows us to directly characterize quantum correlations by the statistics measured with systems of on-off detectors. Additionally, we generalize our method to multiple detector systems for measurements of correlations between light fields. We also consider multi-mode radiation fields and isolate nonclassicality in terms of the space time correlations. Finally, we present results for the quantum statistics using on-off detectors operating in nonlinear detection modes.
First results from beam emission spectroscopy in SPIDER negative ion source
Creators: name: Barbisan, M.
name: Zaniol, B.
name: Pasqualotto, R.
name: Serianni, G.
name: Ugoletti, M.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: The SPIDER experiment, part of the Neutral Beam Test Facility (NBTF) at Consorzio RFX (Padua, Italy), is the prototype of the negative ion source for the ITER neutral beam injectors; the source is coupled to a 100 kV three-grid acceleration system. A Beam Emission Spectroscopy (BES) diagnostic was installed in SPIDER to study and optimize energy distribution, aiming, uniformity and divergence of the H-/D- beam extracted from the source. The diagnostic is based on the analysis of the Doppler shifted Hα/Dα light emitted in the interaction between the beam particles and the H2/D2 molecules of the background. In 2019 the BES diagnostic in SPIDER was installed and calibrated, and it allowed to characterize the first hydrogen beams extracted from the SPIDER source, in cesium free conditions. The number of active beamlets composing the beam was reduced from 1280 to 80, affecting the BES diagnostic capabilities. This paper presents the BES diagnostic setup and discusses the first collected results. Under limited extracted current density ($\sim$ 10 A/m^2) and ion energy ($\leq$35 keV), no significant vertical beam deflection caused by the magnetic filter field in the source was detected. In some cases the beamlets were observed to be elongated in horizontal direction; beamlet divergence values down to 20 mrad and 30 mrad e-folding were measured in vertical and horizontal direction, respectively; the intensity of the Doppler shifted radiation was found to be strongly correlated to the beam current and to the beam divergence. The progressive compensation of beamlet deflections (caused by electron suppression filter fields) with increasing voltage in the extraction gap was studied.
description: 21 pages, 8 figures. Accepted manuscript of a published paper
Route to observing topological edge modes in ultracold fermions
Creators: name: Xu, Junjun
name: Gu, Qiang
name: Mueller, Erich J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We show how to exploit the rich hyperfine structure of fermionic alkali atoms to produce a quasi-1D topological superfluid while avoiding excessive heating from off-resonant scattering. We model interacting fermions where four hyperfine states are coupled by a variety of optical and microwave fields. We calculate the local density of states in a trap, finding regimes with zero energy topological edge modes. Heating rates in this system are significantly suppressed compared to simple Raman-induced spin-orbit coupling approaches.
description: 6 pages, 6 figures
Neusticomys monticolus Anthony 1921
Creators: name: Musser, Guy G.
name: Carleton, Michael D.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Muridae
Neusticomys
Neusticomys monticolus

description: Neusticomys monticolus Anthony, 1921. Am. Mus. Novit., 20:2. TYPE LOCALITY: Ecuador, Prov. Pichincha, Nono Farm "San Francisco," 10,500 ft. DISTRIBUTION: Colombia and Ecuador. COMMENTS: Taxonomy and distribution reviewed by Voss (1988).
description: Published as part of Guy G. Musser & Michael D. Carleton, 1993, Order Rodentia - Family Muridae, pp. 501-755 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 714, DOI: 10.5281/zenodo.7353098
description: {"references": ["Voss, R. S. 1988. Systematics and ecology of ichthyomyine rodents (Muroidea): Patterns of morphological evolution in a small adaptive radiation. Bulletin of the American Museum of Natural History, 188: 259 - 493."]}
Integrated Broadband Mode Division Demultiplexer in Waveguide Arrays
Creators: name: Zhao, Yu-le
name: Sheng, Chong
name: Liu, Zi-yi
name: Zhu, Shi-ning
name: Liu, Hui
Publisher: name: arXiv
Year: 2023
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: On-chip mode division (de)multiplexing plays a significant role in the integrated devices to greatly improve communication capacity. One of the pursuing goals of mode division (de)multiplexer is how to realize such devices with larger bandwidth and better fabrication tolerance. However, integrated broadband mode division (de)multiplexing devices were rarely reported up to now. In this work, we experimentally realize a broadband mode division demultiplexing device with a high degree of fabrication tolerance based on lithium niobate-on-insulator waveguide array. By taking advantage of the fact that different modes in the waveguide array have different group velocity, we experimentally confirmed that different modes in the waveguide array have different transverse displacements. The implementation of the integrated broadband mode division demultiplexer may have future applications in information processing technology, quantum communication as well as quantum computing.
$ρ$ condensation and physical parameters
Creators: name: Frasca, Marco
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Recently we showed how a non-local Nambu-Jona-Lasinio model comes out from QCD in the low-energy limit. In this way, it is possible to fix all the free parameters of the model with physical ones. We use this approach to derive a local limit to the Nambu-Jona-Lasinio model with the parameters those obtained from QCD in order to fix the physical parameters of $ρ$ condensation. $ρ$ condensation is a consequence of the highly non-trivial behavior of the QCD vacuum in presence a very strong magnetic field giving rising to superconductive behavior in quark matter. Determination of the proper parameters for this state can be an important helpful guide to identify it experimentally.
description: 17 pages, 2 figures. Version accepted for publication in Journal of High Energy Physics
On the Karatsuba divisor problem
Creators: name: Iudelevich, Vitalii V.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: We obtain an upper bound for the sum $Φ_a(x) = \sum_{p\le x}1/(τ(p+a))$, where $τ(n)$ is the divisor function, $a\ge 1$ is a fixed integer, and $p$ run through primes up to $x$.
An experimental study in Real-time Facial Emotion Recognition on new 3RL dataset
Creators: name: Zafra, Rahmeh Abou
name: Abdullah, Lana Ahmad
name: Alaraj, Rouaa
name: Albezreh, Rasha
name: Barhoum, Tarek
name: Jallad, Khloud Al
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: Human-Computer Interaction (cs.HC)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Although real-time facial emotion recognition is a hot topic research domain in the field of human-computer interaction, state-of the-art available datasets still suffer from various problems, such as some unrelated photos such as document photos, unbalanced numbers of photos in each class, and misleading images that can negatively affect correct classification. The 3RL dataset was created, which contains approximately 24K images and will be publicly available, to overcome previously available dataset problems. The 3RL dataset is labelled with five basic emotions: happiness, fear, sadness, disgust, and anger. Moreover, we compared the 3RL dataset with other famous state-of-the-art datasets (FER dataset, CK+ dataset), and we applied the most commonly used algorithms in previous works, SVM and CNN. The results show a noticeable improvement in generalization on the 3RL dataset. Experiments have shown an accuracy of up to 91.4% on 3RL dataset using CNN where results on FER2013, CK+ are, respectively (approximately from 60% to 85%).
bgGLUE: A Bulgarian General Language Understanding Evaluation Benchmark
Creators: name: Hardalov, Momchil
name: Atanasova, Pepa
name: Mihaylov, Todor
name: Angelova, Galia
name: Simov, Kiril
name: Osenova, Petya
name: Stoyanov, Ves
name: Koychev, Ivan
name: Nakov, Preslav
name: Radev, Dragomir
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computation and Language (cs.CL)
subject: Information Retrieval (cs.IR)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences
subject: F.2.2; I.2.7
subject: 68T50

description: We present bgGLUE(Bulgarian General Language Understanding Evaluation), a benchmark for evaluating language models on Natural Language Understanding (NLU) tasks in Bulgarian. Our benchmark includes NLU tasks targeting a variety of NLP problems (e.g., natural language inference, fact-checking, named entity recognition, sentiment analysis, question answering, etc.) and machine learning tasks (sequence labeling, document-level classification, and regression). We run the first systematic evaluation of pre-trained language models for Bulgarian, comparing and contrasting results across the nine tasks in the benchmark. The evaluation results show strong performance on sequence labeling tasks, but there is a lot of room for improvement for tasks that require more complex reasoning. We make bgGLUE publicly available together with the fine-tuning and the evaluation code, as well as a public leaderboard at https://bgglue.github.io/, and we hope that it will enable further advancements in developing NLU models for Bulgarian.
description: Accepted to ACL 2023 (Main Conference)
Quedius (Raphirus) muscicola CAMERON 1932
Creators: name: Tephens
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Quedius
Quedius muscicola

description: Quedius (Raphirus) muscicola CAMERON, 1932 Quedius muscicola CAMERON, 1932:295 (Quedius; subgenus Raphirus; description). N e w r e c o r d s. Gansu: Min Shan, 38 km SSW Longnan, 1500 m, N slope, 33°05"24"N, 6.VIII. 2012, M. Schülke, 3 spec. (ASC, MSC); same, 2080 m, 33°13’03"N, 4.VIII.2012, M. Schülke, 3 spec. (ASC, MSC). ShaanxI: Micang Shan, 42 km S Hanzhong, 1090 m, 32°40’43" N 106°48’33"E, 17.VIII.2012, M. Schülke, 2 spec. (MSC); same, 34 km S Hanzhong, 1460 m, 32°44’22"N 106°51’55"E, 14.VIII.2012, M. Schülke, 2 spec. (MSC); same 40 km SW Hanzhong, 1530 m, N slope, 32°52’25"N 106°37’11"E, 16.VIII.2012, M. Schülke, 2 spec. (ASC, MSDC); same, 33 km S Hanzhong, 1360 m, 32°44’44"N 106°52’46"E, 15.VIII.2012, M. Schülke, 1 spec. (MSC); same, 40 km SW Hanzhong, 1530 m, 32°52’25"N 106°37’11"E, 16.VIII.2012, M. Schülke, 3 spec. (ASC, MSC); Mts. 36 km SE Longnan, 2170 m, N-slope, 33°13’20"N 105°15’10"E, 31.VII.2012, M. Schülke, 4 spec. (ASC, MSC). C o m m e n t s. Specimens were taken in makkia type of vegetation by sifting litter and moss; in mixed pine and birch forest on north slope by sifting forest floor litter and mushrooms; in a stream valley in secondary mixed forest on shady S slope by sifting forest floor litter, grass and herbs, and in deciduous forest with bamboo by sifting various litter, grass and moss. This is the first record of Q. muscicola from Gansu.
description: Published as part of Tephens, 2015, Contributions to the knowledge of the Quediina (Coleoptera: Staphylinidae, Staphylinini) of China. Part 52. Genus Quedius STEPHENS, 1829. Subgenus Raphirus STEPHENS, 1829. Section 14. Genus Quetarsius SMETANA, 1996. Section 1., pp. 1855-1864 in Linzer biologische Beiträge 47 (2) on page 1860, DOI: 10.5281/zenodo.5286063
description: {"references": ["CAMERON M. (1932): The Fauna of British India, incuding Ceylon and Burma. Coleoptera, Staphylinidae. - Vol. 3. London: Taylor & Francis, xiii + 1 + 443 pp., 1`pl."]}
Research on human reproductive material, in the light of the law
Creators: name: Geropoulos, Nikolaos
Publisher: name: figshare
Year: 2020
Subjects: subject: 111404 Reproduction
subject: FOS: Medical biotechnology

description: The exponential progress in the field of medically assisted reproduction (MAR), in combination with the ever-increasing supply of, and demand for, the provision of medical services in this area, observed in Greece during recent years, raises questions regarding the abuse of medical power and the implications of using new biomedical techniques, which although they have improved traditional medical and biological research practices, also pose serious human rights risks. The subject of this article is reproductive material and its related research from the legal viewpoint. The purpose is the search for legal limits, as laid down by international and domestic law, in scientific research on human reproductive material and its utilization for reproductive purposes, and examination of the protection these rules provide to the human being whose reproductive material is being investigated.
Effect of viscosity on the dynamics of a non-equilibrium bubble in free-field and near a free-surface
Creators: name: Kannan, Y. S.
name: Balusamy, Saravanan
name: Karri, Badarinath
name: Sahu, Kirti Chandra
Publisher: name: arXiv
Year: 2023
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: The effect of viscosity on the behaviour of a non-equilibrium bubble is investigated experimentally, in two scenarios; firstly, when the bubble is generated in the bulk of the fluid (termed as ``free-field'' bubble) and secondly when the bubble is generated near a free-surface (termed as ``free-surface'' bubble). The bubble is created using a low-voltage spark circuit and its dynamics is captured using a high-speed camera with back-lit illumination. The viscosity of the surrounding fluid is varied by using different grades of silicone oil. For a ``free-field'' bubble, the bubble oscillates radially and as the viscosity of the liquid increases, the number of oscillations, as well as the time-period of each oscillation, are increased. At high viscosities, the bubble also becomes stable and does not disintegrate into smaller bubbles. For ``free-surface'' bubbles, two parameters, namely, the initial distance of the bubble from the free-surface and the viscosity of the surrounding fluid are varied. It is observed that beyond a certain initial distance of the bubble from the free-surface, the bubble behaves as a ``free-field'' bubble with negligible influence of the free-surface on its dynamics. This limiting initial distance decreases as the liquid viscosity is increased and is not dependent on the bubble radius. For these bubbles, different behaviours of the free-surface in each liquid are also presented as a function of the two parameters.
description: 14 pages, 10 figures
Size dependence of the largest distance between random points
Creators: name: Krawczyk, Malgorzata J.
name: Malinowski, Janusz
name: Kulakowski, Krzysztof
Publisher: name: arXiv
Year: 2013
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: A set of $N$ points is chosen randomly in a $D$-dimensional volume $V=a^D$, with periodic boundary conditions. For each point $i$, its distance $d_i$ is found to its nearest neighbour. Then, the maximal value is found, $d_{max}=max(d_i, i=1,...,N)$. Our numerical calculations indicate, that when the density $N/V$=const, $d_{max}$ scales with the linear system size as $d^2_{max}\propto a^ϕ$, with $ϕ=0.24\pm0.04$ for $D=1,2,3,4$.
description: 4 pages, 1 figure
Neusticomys mussai Ochoa G. and Soriano 1991
Creators: name: Musser, Guy G.
name: Carleton, Michael D.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Muridae
Neusticomys
Neusticomys mussai

description: Neusticomys mussai Ochoa G. and Soriano, 1991. J. Mammal., 72:97. TYPE LOCALITY: Venezuela, Edo. Tachira, 14 km SE Pregonero, Rio Potosi, Paso Hondo, 1050 m. DISTRIBUTION: Known only from the type locality. COMMENTS: The two known specimens represent the least aquatically specialized ichthyomyine species described thus far.
description: Published as part of Guy G. Musser & Michael D. Carleton, 1993, Order Rodentia - Family Muridae, pp. 501-755 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 714, DOI: 10.5281/zenodo.7353098
Long-range Scanning Tunneling Microscope for the study of nanostructures on insulating substrates
Creators: name: Molina-Mendoza, Aday
name: Rodrigo, José Gabriel
name: Island, Joshua
name: Burzuri, Enrique
name: Rubio-Bollinger, Gabino
name: van der Zant, Herre S. J.
name: Agraït, Nicolás
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The Scanning Tunneling Microscope is a powerful tool for studying the electronic properties at the atomic level, however it's relatively small scanning range and the fact that it can only operate on conducting samples prevents its application to study heterogeneous samples consisting on conducting and insulating regions. Here we present a long-range scanning tunneling microscope capable of detecting conducting micro and nanostructures on insulating substrates using a technique based on the capacitance between the tip and the sample and performing STM studies.
description: 3 pages, 7 figures
Charge-Ordering Transition in (TMTTF)$_2$X Explored via Dilatometry
Creators: name: de Souza, Mariano
name: Pouget, Jean-Paul
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Charge-ordering phenomena have been highly topical over the last few years. A phase transition towards a charge ordered state has been observed experimentally in several classes of materials. Among them, many studies have been devoted to the family of quasi-one dimensional organic charge-transfer salts (TMTTF)$_2$X, where (TMTTF) stands for tetramethyltetrathiafulvalene and X for a monovalent anion (X = PF$_6$, AsF$_6$ and SbF$_6$). However, the relationship between the electron localization phenomena and the role of the lattice distortion in stabilizing the charge-ordering pattern is poorly documented in the literature. Here we present a brief overview of selected literature results with emphasis placed on recent thermal expansion experiments probing the charge-ordering transition of these salts.
description: 21 pages, 17 figures
Dislocation density transients and saturation in irradiated zirconium
Creators: name: Warwick, Andrew R.
name: Thomas, Rhys
name: Boleininger, Max
name: Koç, Ömer
name: Zilahi, Gyula
name: Ribárik, Gabor
name: Hegedues, Zoltan
name: Lienert, Ulrich
name: Ungar, Tamas
name: Race, Chris
name: Preuss, Michael
name: Frankel, Philipp
name: Dudarev, Sergei L.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Zirconium alloys are widely used as the fuel cladding material in pressurised water reactors, accumulating a significant population of defects and dislocations from exposure to neutrons. We present and interpret synchrotron microbeam X-ray diffraction measurements of proton-irradiated Zircaloy-4, where we identify a transient peak and the subsequent saturation of dislocation density as a function of exposure. This is explained by direct atomistic simulations showing that the observed variation of dislocation density as a function of dose is a natural result of the evolution of the dense defect and dislocation microstructure driven by the concurrent generation of defects and their subsequent stress-driven relaxation. In the dynamic equilibrium state of the material developing in the high dose limit, the defect content distribution of the population of dislocation loops, coexisting with the dislocation network, follows a power law with exponent $α\approx 2.2$. This corresponds to the power law exponent of $β\approx 3.4$ for the distribution of loops as a function of their diameter that compares favourably with the experimentally measured values of $β$ in the range $ 3 \leq β\leq 4$.
Approach and Coalescence of Liquid Drops in Air
Creators: name: Paulsen, Joseph D.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The coalescence of liquid drops has conventionally been thought to have just two regimes when the drops are brought together slowly in vacuum or air: a viscous regime corresponding to the Stokes-flow limit and a later inertially-dominated regime. Recent work [Proc. Natl. Acad. Sci. 109, 6857 (2012)] found that the Stokes-flow limit cannot be reached in the early moments of coalescence, because the inertia of the drops cannot be neglected then. Instead, the drops are described by an "inertially limited viscous" regime, where surface tension, inertia, and viscous forces all balance. The dynamics continue in this regime until either viscosity or inertia dominate on their own. I use an ultrafast electrical method and high-speed imaging to provide a detailed description of coalescence near the moment of contact for drops that approach at low speed and coalesce as undeformed spheres. These measurements support a description of coalescence having three regimes. Signatures both before and after contact identify a threshold approach-speed for deformation of the drops by the ambient gas.
description: 15 pages, 16 figures
Precise mass and spin measurements for a stellar-mass black hole through X-ray timing: the case of GRO J1655-40
Creators: name: Motta, S. E.
name: Belloni, T. M.
name: Stella, L.
name: Muñoz-Darias, T.
name: Fender, R.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present a systematic analysis of the fast time variability properties of the transient black hole binary GRO J1655-40, based on the complete set of RossiXTE observations. We demonstrate that the frequencies of the quasi-periodic oscillations and of the broad band noise components and their variations match accurately the strong field general relativistic frequencies of particle motion in the close vicinity of the innermost stable circular orbit, as predicted by the relativistic precession model. We obtain high precision measurements of the black hole mass (M = (5.31 +/- 0.07) M solar masses, consistent with the value from optical/NIR observations) and spin (a/M = 0.290 +/- 0.003), through the sole use of X-ray timing.
description: 16 pages, 4 figures, 3 tables. Accepted by MNRAS
Gaussian local unitary equivalence of $n$-mode Gaussian states and Gaussian transformations by local operations with classical communication
Creators: name: Giedke, Géza
name: Kraus, Barbara
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We derive necessary and sufficient conditions for arbitrary multi--mode (pure or mixed) Gaussian states to be equivalent under Gaussian local unitary operations. To do so, we introduce a standard form for Gaussian states, which has the properties that (i) every state can be transformed into its standard form via Gaussian local unitaries and (ii) it is unique and (iii) it can be easily computed. Thus, two states are equivalent under Gaussian local unitaries iff their standard form coincides. We explicitly derive the standard form for two-- and three--mode Gaussian pure states. We then investigate transformations between these classes by means of Gaussian local operations assisted by classical communication. For three-mode pure states, we identify a global property that cannot be created but only destroyed by local operations. This implies that the highly entangled family of symmetric three--mode Gaussian states is not sufficient to generated all three-mode Gaussian states by local Gaussian operations.
description: 16+pages; published version
Giant spin oscillations in an ultracold Fermi sea
Creators: name: Krauser, Jasper Simon
name: Ebling, Ulrich
name: Fläschner, Nick
name: Heinze, Jannes
name: Sengstock, Klaus
name: Lewenstein, Maciej
name: Eckardt, André
name: Becker, Christoph
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Collective behavior in many-body systems is the origin of many fascinating phenomena in nature ranging from swarms of birds and modeling of human behavior to fundamental magnetic properties of solids. We report on the first observation of collective spin dynamics in an ultracold Fermi sea with large spin: We observe long-lived and large-amplitude coherent spin oscillations, driven by local spin interactions. At ultralow temperatures, Pauli blocking stabilizes the collective behavior and the Fermi sea behaves as a single entity in spin space. With increasing temperature, we observe a stronger damping associated with particle-hole excitations. As a striking feature, we find a high-density regime where excited spin configurations are collisionally stabilized.
description: 9+17 pages, 4+3 figures
Neusticomys oyapocki
Creators: name: Musser, Guy G.
name: Carleton, Michael D.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Muridae
Neusticomys
Neusticomys oyapocki

description: Neusticomys oyapocki (Dubost and Petter, 1978). Mammalia, 42:436. TYPE LOCALITY: French Guiana, Trois-Sauts, near the banks of the Oyapock River; 02°10'N, 53°11'W. DISTRIBUTION: Known only from the type locality. COMMENTS: The single known specimen was originally referred to Daptomys. Maintained as a species by Voss (1988).
description: Published as part of Guy G. Musser & Michael D. Carleton, 1993, Order Rodentia - Family Muridae, pp. 501-755 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 714, DOI: 10.5281/zenodo.7353098
description: {"references": ["Voss, R. S. 1988. Systematics and ecology of ichthyomyine rodents (Muroidea): Patterns of morphological evolution in a small adaptive radiation. Bulletin of the American Museum of Natural History, 188: 259 - 493."]}
Static Fuzzy Bag-of-Words: a lightweight sentence embedding algorithm
Creators: name: Muffo, Matteo
name: Tedesco, Roberto
name: Sbattella, Licia
name: Scotti, Vincenzo
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computation and Language (cs.CL)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: The introduction of embedding techniques has pushed forward significantly the Natural Language Processing field. Many of the proposed solutions have been presented for word-level encoding; anyhow, in the last years, new mechanism to treat information at an higher level of aggregation, like at sentence- and document-level, have emerged. With this work we address specifically the sentence embeddings problem, presenting the Static Fuzzy Bag-of-Word model. Our model is a refinement of the Fuzzy Bag-of-Words approach, providing sentence embeddings with a predefined dimension. SFBoW provides competitive performances in Semantic Textual Similarity benchmarks, while requiring low computational resources.
description: 9 pages, 2 figures
Five ant species (Hymenoptera: Formicidae) new to the Greek fauna with notes on ants from Greek Thrace
Creators: name: Lech Borowiec
name: Jasper P.L. van Delft
name: Jeroen J.C.W. van Delft
name: Sebastian Salata
Publisher: name: Zenodo
Year: 2023

description: Camponotus tergestinus Müller, Lasius sabularum (Bondroit), Proformica korbi (Emery), Strongylognathus bulgaricus Pisarski, and Strongylognathus karawajewi Pisarski are recorded from Greece for the first time. A list of 81 species and morphospecies collected in Greek Thrace in 2023, including ten taxa new to this region, are given.
Neusticomys peruviensis
Creators: name: Musser, Guy G.
name: Carleton, Michael D.
Publisher: name: Zenodo
Year: 1993
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Muridae
Neusticomys
Neusticomys peruviensis

description: Neusticomys peruviensis (Musser and Gardner, 1974). Am. Mus. Novit., 2537:7. TYPE LOCALITY: Peru, Depto. Loreto, Balta, 300 m; 10°08'S, 17°13'W. DISTRIBUTION: Known only from the type locality. COMMENTS: The single known specimen was originally referred to Daptomys. Maintained as a species by Voss (1988).
description: Published as part of Guy G. Musser & Michael D. Carleton, 1993, Order Rodentia - Family Muridae, pp. 501-755 in Mammal Species of the World (2 nd Edition), Washington and London :Smithsonian Institution Press on page 714, DOI: 10.5281/zenodo.7353098
description: {"references": ["Voss, R. S. 1988. Systematics and ecology of ichthyomyine rodents (Muroidea): Patterns of morphological evolution in a small adaptive radiation. Bulletin of the American Museum of Natural History, 188: 259 - 493."]}
Elliptic flow from thermal photons with magnetic field in holography
Creators: name: Muller, Berndt
name: Wu, Shang-Yu
name: Yang, Di-Lun
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We compute the elliptic flow $v_2$ of thermal photons in a strongly coupled plasma with constant magnetic field via gauge/gravity duality. The D3/D7 embedding is applied to generate the contributions from massive quarks. By considering the cases in 2+1 flavor SYM analogous to the photon production in QGP, we obtain the thermal-photon $v_2$, which is qualitatively consistent with the direct-photon $v_2$ measured in RHIC at intermediate energy. However, due to the simplified setup, the thermal-photon $v_2$ in our model should be regarded as the upper bound for the $v_2$ generated by solely magnetic field in the strongly coupled scenario.
description: 7 pages, 6 figures, paragraphs extended, journal version accepted by Physical Review D
Transport properties of rippled graphene
Creators: name: Zwierzycki, Maciej
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The exceptionally high mobility of carriers in graphene is one of its defining characteristics, especially in view of potential applications. Therefore it is of both practical and fundamental importance to understand the mechanisms responsible for limiting the values of mobility. The aim of the paper is to study theoretically one such mechanism, i.e. scattering on ripples. The transport properties of rippled graphene are studied using using single-band tight-binding model. Both the bond-length variation, corresponding to the vector potential in the effective mass picture, and fluctuating scalar potential are included in the formalism. The samples are modeled as self-similar surfaces characterized by the roughness exponent with values ranging from typical for graphene on SiO$_{2}$ to seen in suspended samples. The range of calculated resistivities and mobilities overlaps with experiment. The results presented here support the notion of rippling as one of the factors limiting the mobility.
Bidirectional GaitNet: A Bidirectional Prediction Model of Human Gait and Anatomical Conditions
Creators: name: Park, Jungnam
name: Park, Moon Seok
name: Lee, Jehee
name: Won, Jungdam
Publisher: name: arXiv
Year: 2023
Subjects: subject: Graphics (cs.GR)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences
subject: I.3; I.6

description: We present a novel generative model, called Bidirectional GaitNet, that learns the relationship between human anatomy and its gait. The simulation model of human anatomy is a comprehensive, full-body, simulation-ready, musculoskeletal model with 304 Hill-type musculotendon units. The Bidirectional GaitNet consists of forward and backward models. The forward model predicts a gait pattern of a person with specific physical conditions, while the backward model estimates the physical conditions of a person when his/her gait pattern is provided. Our simulation-based approach first learns the forward model by distilling the simulation data generated by a state-of-the-art predictive gait simulator and then constructs a Variational Autoencoder (VAE) with the learned forward model as its decoder. Once it is learned its encoder serves as the backward model. We demonstrate our model on a variety of healthy/impaired gaits and validate it in comparison with physical examination data of real patients.
Failure mechanisms of load sharing complex systems
Creators: name: Siddique, Shahnewaz
name: Volovoi, Vitali
Publisher: name: arXiv
Year: 2013
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Physical sciences

description: We investigate the failure mechanisms of load sharing complex systems. The system is composed of multiple nodes or components whose failures are determined based on the interaction of their respective strengths and loads (or capacity and demand respectively) as well as the ability of a component to share its load with its neighbors when needed. We focus on two distinct mechanisms to model the interaction between components' strengths and loads. The failure mechanisms of these two models demonstrate temporal scaling phenomena, phase transitions and multiple distinct failure modes excited by extremal dynamics. For critical ranges of parameters the models demonstrate power law and exponential failure patterns. We identify the similarities and differences between the two mechanisms and the implications of our results to the failure mechanisms of complex systems in the real world.
description: 7 pages, 30 figures