cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A Charge Domain P-8T SRAM Compute-In-Memory with Low-Cost DAC/ADC Operation for 4-bit Input Processing
Creators: name: Kim, Joonhyung
name: Lee, Kyeongho
name: Park, Jongsun
Publisher: name: arXiv
Year: 2022
Subjects: subject: Hardware Architecture (cs.AR)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences
subject: B.3.1

description: This paper presents a low cost PMOS-based 8T (P-8T) SRAM Compute-In-Memory (CIM) architecture that efficiently per-forms the multiply-accumulate (MAC) operations between 4-bit input activations and 8-bit weights. First, bit-line (BL) charge-sharing technique is employed to design the low-cost and reliable digital-to-analog conversion of 4-bit input activations in the pro-posed SRAM CIM, where the charge domain analog computing provides variation tolerant and linear MAC outputs. The 16 local arrays are also effectively exploited to implement the analog mul-tiplication unit (AMU) that simultaneously produces 16 multipli-cation results between 4-bit input activations and 1-bit weights. For the hardware cost reduction of analog-to-digital converter (ADC) without sacrificing DNN accuracy, hardware aware sys-tem simulations are performed to decide the ADC bit-resolutions and the number of activated rows in the proposed CIM macro. In addition, for the ADC operation, the AMU-based reference col-umns are utilized for generating ADC reference voltages, with which low-cost 4-bit coarse-fine flash ADC has been designed. The 256X80 P-8T SRAM CIM macro implementation using 28nm CMOS process shows that the proposed CIM shows the accuracies of 91.46% and 66.67% with CIFAR-10 and CIFAR-100 dataset, respectively, with the energy efficiency of 50.07-TOPS/W.
description: Presented at ISLPED 2022
Effect of dark matter halos on the orbital and escape dynamics of barred galaxies
Creators: name: Mondal, Debasish
name: Chattopadhyay, Tanuka
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: This study examines the effect of dark matter halos on the orbital and escape dynamics of stars in the central region of barred galaxies. A three-dimensional gravitational model with a central bulge, bar, disc, and dark matter halo (or simply dark halo) has been set up and analyzed from the viewpoint of escape in open Hamiltonian systems for this purpose. Additionally, this model has been examined separately for the dark halo profiles: oblate and NFW. In both circumstances, an escape mechanism has been identified near the saddle points of the phase space, which correspond to the bar ends. The escaping motion of stars is seen using orbital maps and Poincaré surface section maps generated in various phase planes. Finally, the relationship between chaos and dark halo parameters such as mass, size, circular velocity, and nature has been studied. Our findings suggest that oblate dark halos are preferred over NFW dark halos for justifying the formation of full-fledged spiral arms and extended distribution of dark halos in giant spiral galaxies with supermassive black holes (SMBHs) at their centers. Again, the oblate dark halos well justify the emergence of less prominent or poor spiral arms and the core-dominated distribution of dark halos in dwarf and LSB galaxies in the absence of central SMBHs. On the other hand, extreme central baryonic feedback is required for the NFW halos to generate spiral patterns, and such dark halos should be preferred for galaxies with extremely energetic centers.
description: 29 pages, 7 figures, 3 tables, comments are welcome
Natural selection on human Y chromosomes
Creators: name: Wang, Chuan-Chao
name: Jin, Li
name: Li, Hui
Publisher: name: arXiv
Year: 2013
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: FOS: Biological sciences

description: The paternally inherited Y chromosome has been widely used in population genetic studies to understand relationships among human populations. Our interpretation of Y chromosomal evidence about population history and genetics has rested on the assumption that all the Y chromosomal markers in the male-specific region (MSY) are selectively neutral. However, the very low diversity of Y chromosome has drawn a long debate about whether natural selection has affected this chromosome or not. In recent several years, the progress in Y chromosome sequencing has helped to address this dispute. Purifying selection has been detected in the X-degenerate genes of human Y chromosomes and positive selection might also have an influence in the evolution of testis-related genes in the ampliconic regions. Those new findings remind us to take the effect of natural selection into account when we use Y chromosome in population genetic studies.
description: 12 pages
Schwerpunkt: Wegbereiterinnen der ,Sozialpädagogik' und die Anfänge des Studiengangs an der Gesamthochschule Siegen (1919 - 1990)
Creators: name: Schulte, Dagmar
name: Hering, Sabine
Publisher: name: Universitätsbibliothek Siegen
Year: 2022
Subjects: subject: 370 Erziehung, Schul- und Bildungswesen
subject: Sozialpädagogik
subject: Soziale Arbeit
subject: Berufskolleg
subject: Hochschulgeschichte
subject: Hochschulausbildung
subject: Sozialpädagogik
subject: Sozialarbeit
subject: Universitätsgeschichte

description: Dieser Ausgabe von SI:SO wird einem in der Erforschung der Geschichte der Universität Siegen bislang wenig beachteten Thema gewidmet: Es werden Ursprünge der universitären Sozialpädagogik in den Frauenberufsschulen in Siegen aufgespürt und die Geschichte bis zur Einführung der konsekutiven Studiengänge 1990 ("Außerschulisches Erziehungs- und Sozialwesen" der Universität-Gesamthochschule Siegen) nachgezeichnet.
Making hot Jupiters in stellar clusters: the importance of binary exchange
Creators: name: Li, Daohai
name: Mustill, Alexander J.
name: Davies, Melvyn B.
name: Gong, Yan-Xiang
Publisher: name: arXiv
Year: 2022
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: It has been suggested that the occurrence rate of hot Jupiters (HJs) in open clusters might reach several per cent, significantly higher than that of the field ($\sim$ a per cent). In a stellar cluster, when a planetary system scatters with a stellar binary, it may acquire a companion star which may excite large amplitude von Zeipel-Lidov-Kozai oscillations in the planet's orbital eccentricity, triggering high-eccentricity migration and the formation of an HJ. We quantify the efficiency of this mechanism by modelling the evolution of a gas giant around a solar mass star under the influence of successive scatterings with binary and single stars. We show that the chance that a planet $\in(1,10)$ au becomes an HJ in a Gyr in a cluster of stellar density $n_*=50$ pc$^{-3}$ and binary fraction $f_\mathrm{bin}=0.5$ is about 2\% and an additional 4\% are forced by the companion star into collision with or tidal disruption by the central host. An empirical fit shows that the total percentage of those outcomes asymptotically reaches an upper limit determined solely by $f_\mathrm{bin}$ (e.g., $10\%$ at $f_\mathrm{bin}=0.3$ and 18\% at $f_\mathrm{bin}=1$) on a timescale inversely proportional to $n_*$ ($\sim$ Gyr for $n_*\sim100$ pc$^{-3}$). The ratio of collisions to tidal disruptions is roughly a few, and depends on the tidal model. Therefore, if the giant planet occurrence rate is 10~\%, our mechanism implies an HJ occurrence rate of a few times 0.1~\% in a Gyr and can thus explain a substantial fraction of the observed rate.
description: to appear in MNRAS, 6 figures
The emptiness inside: Finding gaps, valleys, and lacunae with geometric data analysis
Creators: name: Contardo, Gabriella
name: Hogg, David W.
name: Hunt, Jason A. S.
name: Peek, Joshua E. G.
name: Chen, Yen-Chi
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Discoveries of gaps in data have been important in astrophysics. For example, there are kinematic gaps opened by resonances in dynamical systems, or exoplanets of a certain radius that are empirically rare. A gap in a data set is a kind of anomaly, but in an unusual sense: Instead of being a single outlier data point, situated far from other data points, it is a region of the space, or a set of points, that is anomalous compared to its surroundings. Gaps are both interesting and hard to find and characterize, especially when they have non-trivial shapes. We present in this paper a statistic that can be used to estimate the (local) "gappiness" of a point in the data space. It uses the gradient and Hessian of the density estimate (and thus requires a twice-differentiable density estimator). This statistic can be computed at (almost) any point in the space and does not rely on optimization; it allows to highlight under-dense regions of any dimensionality and shape in a general and efficient way. We illustrate our method on the velocity distribution of nearby stars in the Milky Way disk plane, which exhibits gaps that could originate from different processes. Identifying and characterizing those gaps could help determine their origins. We provide in an Appendix implementation notes and additional considerations for finding under-densities in data, using critical points and the properties of the Hessian of the density.
description: 17 pages, 10 figures. Submitted to AJ. Comments welcomed. Revision: added 3D gridding + restructured outline: implementation notes (Quadratic Kernel) and methods for approx critical points and 1d-valley now in Annex
Sharp existence criteria for positive solutions of Hardy-Sobolev type systems
Creators: name: Villavert, John
Publisher: name: arXiv
Year: 2014
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35B53, 35J48, 35J91, 45G05, 45G15

description: This paper examines systems of poly-harmonic equations of the Hardy--Sobolev type and the closely related weighted systems of integral equations involving Riesz potentials. Namely, it is shown that the two systems are equivalent under some appropriate conditions. Then a sharp criterion for the existence and non-existence of positive solutions is determined for both differential and integral versions of a Hardy--Sobolev type system with variable coefficients. In the constant coefficient case, Liouville type theorems for positive radial solutions are also established using radial decay estimates and Pohozaev type identities in integral form.
description: 24 pages, final author version
Phractops alutaceus Peters 1867
Creators: name: Miracle, Eulàlia Gassó
name: Van, Lars W.
name: Ostende, Den Hoek
name: Arntzen, Jan Willem
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Amphibia
Anura
Pelodryadidae
Phractops
Phractops alutaceus

description: Phractops alutaceus Peters, 1867
 Peters, 1867. Monatsber. Preuss. Akad. Wiss. Berlin: 31. Current name: Litoria novaehollandiae (Steindachner, 1867)
Paratype: possibly RMNH 3867, 1 spec. Loc.: “Rockhampton, O. Australien ” [Queensland, Australia]. Ex: Museum Godeffroy. Received: 1877.
 Remarks. The holotype is probably in the Museum für Naturkunde der Humboldt-Universität zu Berlin (ZMB 5653), and possible paratypes are in the National Museum of Natural History in Leiden (RMNH 3867) and in the American Museum of Natural History in New York (AMNH 23581). Bauer et al. (1995: 43) suggested that the RMNH specimen was likely not part of the type series. However, in accordance with the Leiden museum records (“Rockhampton, O. Australië, Goddeff.”, received in 1877) RMNH 3867 could have been one of the specimens described by Peters, provided that this specimen was part of the first shipment to the Museum Godeffroy from their collector in Rockhampton, in 1867.
description: Published as part of Miracle, Eulàlia Gassó, Van, Lars W., Ostende, Den Hoek & Arntzen, Jan Willem, 2007, Type specimens of amphibians in the National Museum of Natural History, Leiden, The Netherlands, pp. 25-68 in Zootaxa 1482 on page 51, DOI: 10.5281/zenodo.176896
New Insights on Rift Basin Development and the Geological Carbon Cycle, Mass Extinction, and Carbon Sequestration...
Creators: name: Olsen, Paul E.
name: Kinney, Sean T.
name: Zakharova, Natalia
name: Schlische, Roy W.
name: Withjack, Martha O.
name: Kent, Dennis V.
name: Goldberg, David S.
name: Slater, Brian E.
Publisher: name: Columbia University
Year: 2016
Subjects: subject: Carbon cycle (Biogeochemistry)
subject: Geological carbon sequestration
subject: Geology, Stratigraphic
subject: Geology
subject: FOS: Earth and related environmental sciences
subject: Geomorphology

description: Field trip guide to northern Newark basin of New York and New Jersey including information on stratigraphic and tectonic framework based on outcrops, cores, drill holes and seismic lines.
Microscopic origin of scalar potential induced topological transition in massive Dirac fermions and scalar Hall effect
Creators: name: Ghosh, Sumit
name: Mokrousov, Yuriy
name: Blügel, Stefan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present a systematic study of scalar potential induced topological transition in massive Dirac fermions. We show how a distribution of scalar potential can manipulate the signature of the gap or the mass, as well as the dispersion leading to a band inversion. This is mediated by the Klein tunnelling as well as inverse Klein tunnelling which makes it inherently different from the mechanism leading to topological Anderson insulator. In one dimension it can lead to the formation of edge localisation. In two dimensions this can give rise to the quantised Hall effect. Unlike conventional Hall effects, this is induced by a scalar interaction and intrinsic in nature. Therefore we call it a scalar Hall effect. This can facilitate a direct manipulation of topological invariants, e.g. the Chern number, as well as the manipulation of the edge states locally in a trivial insulator and thus opens new possibilities for tuning physical observables which originate from the nontrivial topology.
description: 9 pages with 11 figures
Do cancer cells undergo phenotypic switching? The case for imperfect cancer stem cell markers
Creators: name: La Porta, C. A. M.
name: Zapperi, S
Publisher: name: arXiv
Year: 2013
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Cell Behavior (q-bio.CB)
subject: FOS: Biological sciences

description: The identification of cancer stem cells in vivo and in vitro relies on specific surface markers that should allow to sort cancer cells in phenotypically distinct subpopulations. Experiments report that sorted cancer cell populations after some time tend to express again all the original markers, leading to the hypothesis of phenotypic switching, according to which cancer cells can transform stochastically into cancer stem cells. Here we explore an alternative explanation based on the hypothesis that markers are not perfect and are thus unable to identify all cancer stem cells. Our analysis is based on a mathematical model for cancer cell proliferation that takes into account phenotypic switching, imperfect markers and error in the sorting process. Our conclusion is that the observation of reversible expression of surface markers after sorting does not provide sufficient evidence in support of phenotypic switching.
Period variation of the classical Cepheid SV Vulpeculae over a century (1913-2022)
Creators: name: Boistel, Guy
Publisher: name: arXiv
Year: 2022
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: This study analyzes 338 new times of visual, CCD, photoelectric and photographic maxima of the classical Cepheid SV Vul. The corresponding observations were made between 1913 and 2022. On this new and large observational basis, the period variations of this star of major astrophysical interest are re-visited. Without contradicting the theory or previous studies, we show that visual observations are important for a long-term monitoring of the period variations of well-selected bright Cepheids. This study establishes the period rate of change of SV Vul at -250 s/yr. Its period is currently shorter than 45 days.
description: 9 pages; 8 figures
Spectral Action and Gravitational effects at the Planck scale
Creators: name: Devastato, Agostino
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss the possibility to extend the spectral action up to energy close to the Planck scale, taking also into account the gravitational effects given by graviton exchange. Including this contribution in the theory, the coupling constant unification is not compromised, but is shifted to the Planck scale rendering all gauge couplings asymptotically free. In the scheme of noncommutative geometry, the gravitational effects change the main standard model coupling constants, leading to a restriction of the free parameters of the theory compatible with the Higgs and top mass prediction. We also discuss consequences for the neutrino mass and the see-saw mechanism.
Virtual Reality for User-Centered Design and Evaluation of Touch-free Interaction Techniques for Navigating Medical Images in the Operating Room
Creators: name: Reinschluessel, Anke
name: Teuber, Joern
name: Herrlich, Marc
name: Bissel, Jeffrey
name: Van Eikeren, Melanie
name: Ganser, Johannes
name: Koeller, Felicia
name: Kollasch, Fenja
name: Mildner, Thomas
name: Raimondo, Luca
name: Reisig, Lars
name: Ruedel, Marc
name: Thieme, Danny
name: Vahl, Tobias
name: Zachmann, Gabriel
name: Malaka, Rainer
Publisher: name: Universität Bremen
Year: 2017
Subjects: subject: touch-free interaction
subject: medical imaging
subject: operating room
subject: virtual reality
subject: 0

description: Computer-assisted surgery has pervaded the operating room (OR). While display and imaging technologies advance rapidly, keyboard and mouse are still the dominant input devices, even though they cause sterility problems. We present an interactive virtual operating room (IVOR), intended as a tool to develop and study interaction methods for the OR, and two novel touch-free interaction techniques using hand and foot gestures. All was developed and evaluated with 20 surgeons. The results show that our techniques can be used with minimal learning time and no significant differences regarding completion time and usability compared to the control condition relying on verbal instruction of an assistant. Furthermore, IVOR as a tool was well received by the surgeons, although they had no prior experience with virtual reality. This confirms IVOR is an effective tool for user-centered design and evaluation, providing a portable, yet realistic substitution for a real OR for early evaluations.
Resonant driving of a nonlinear Hamiltonian system
Creators: name: Palmisano, Carlo
name: Gervino, Gianpiero
name: Balma, Massimo
name: Devona, Dorina
name: Wimberger, Sandro
Publisher: name: arXiv
Year: 2013
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: As a proof of principle, we show how a classical nonlinear Hamiltonian system can be driven resonantly over reasonably long times by appropriately shaped pulses. To keep the parameter space reasonably small, we limit ourselves to a driving force which consists of periodic pulses additionally modulated by a sinusoidal function. The main observables are the average increase of kinetic energy and of the action variable (of the non-driven system) with time. Applications of our scheme aim for driving high frequencies of a nonlinear system with a fixed modulation signal.
Born's rule and permutation invariance
Creators: name: Dedes, C
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: It is shown that the probability density satisfies a hyperbolic equation of motion with the unique characteristic that in its many-particle form it contains derivatives acting at spatially remote regions. Based on this feature we explore inter-particle correlations and the relation between the quantum equilibrium condition and the permutation invariance of the probability density. Some remarks with respect to the quantum to classical transition are also presented.
Towards clarifying the possibility of observation of the LHCb hidden-charm pentaquarks $P_{c}^+(4312)$, $P_{c}^+(4337)$, $P_{c}^+(4440)$ and $P_{c}^+(4457)$ in near-threshold charmonium photoproduction off protons and nuclei
Creators: name: Paryev, E. Ya.
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We study the near-threshold $J/ψ$ meson photoproduction from protons and nuclei by considering incoherent direct non-resonant ($γp \to {J/ψ}p$, $γn \to {J/ψ}n$) and two-step resonant ($γp \to P_{ci}^+ \to {J/ψ}p$, $γn \to P_{ci}^0 \to {J/ψ}n$, $i=1$, 2, 3, 4; $P_{c1}^{+,0}=P_c^{+,0}(4312)$, $P_{c2}^{+,0}=P_c^{+,0}(4337)$, $P_{c3}^{+,0}=P_c^{+,0}(4440)$, $P_{c4}^{+,0}=P_c^{+,0}(4457)$) charmonium production processes. We calculate the absolute excitation functions, energy and momentum distributions for the non-resonant, resonant and for the combined (non-resonant plus resonant) production of $J/ψ$ mesons on protons as well as, using the nuclear spectral function approach, on carbon and tungsten target nuclei at near-threshold incident photon energies by assuming the spin-parity assignments of the hidden-charm resonances $P_{c}^{+,0}(4312)$, $P_{c}^{+,0}(4337)$, $P_{c}^{+,0}(4440)$ and $P_{c}^{+,0}(4457)$ as $J^P=(1/2)^-$, $J^P=(1/2)^-$, $J^P=(1/2)^-$ and $J^P=(3/2)^-$ within three different realistic scenarios for the branching ratios of their decays to the ${J/ψ}p$ and ${J/ψ}n$ modes (0.25, 0.5 and 1%). We show that will be very hard to measure the $P_{ci}^+$ pentaquark states through the scan of the $J/ψ$ total photoproduction cross section on a proton target in the near-threshold energy region around the resonant photon energies of 9.44, 9.554, 10.04 and 10.12 GeV if these branching ratios $\sim$ 1% and less. We also demonstrate that at these photon beam energies the $J/ψ$ energy and momentum combined distributions considered reveal distinct sensitivity to the above scenarios, respectively, at "low" $J/ψ$ total energies and momenta, which implies that they may be an important tool to provide further evidence for the existence of the pentaquark $P_{ci}^+$ and $P_{ci}^0$ resonances.
description: 26 pages
Experimental Detection of Quantum Channels
Creators: name: Orieux, Adeline
name: Sansoni, Linda
name: Persechino, Mauro
name: Mataloni, Paolo
name: Rossi, Matteo
name: Macchiavello, Chiara
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We demonstrate experimentally the possibility of efficiently detecting properties of quantum channels and quantum gates. The optimal detection scheme is first achieved for non entanglement breaking channels of the depolarizing form and is based on the generation and detection of polarized entangled photons. We then demonstrate channel detection for non separable maps by considering the CNOT gate and employing two-photon hyperentangled states.
description: 8 pages, 9 figures
AQP1 Is Not Only a Water Channel: It Contributes to Cell Migration through Lin7/Beta-Catenin
Creators: name: Monzani, Elena
name: Bazzotti, Riccardo
name: Perego, Carla
name: La Porta, Caterina A. M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cell Behavior (q-bio.CB)
subject: Quantitative Methods (q-bio.QM)
subject: Subcellular Processes (q-bio.SC)
subject: FOS: Biological sciences

description: Background: AQP1 belongs to aquaporins family, water-specific, membrane-channel proteins expressed in diverse tissues. Recent papers showed that during angiogenesis, AQP1 is expressed preferentially by microvessels, favoring angiogenesis via the increase of permeability In particular, in AQP1 null mice, endothelial cell migration is impaired without altering their proliferation or adhesion. Therefore, AQP1 has been proposed as a novel promoter of tumor angiogenesis. Methods/Findings: Using targeted silencing of AQP1 gene expression, an impairment in the organization of F-actin and a reduced migration capacity was demonstrated in human endothelial and melanoma cell lines. Interestingly, we showed, for the first time, that AQP1 co-immunoprecipitated with Lin-7. Lin7-GFP experiments confirmed co-immunoprecipitation. In addition, the knock down of AQP1 decreased the level of expression of Lin-7 and b-catenin and the inhibition of proteasome contrasted partially such a decrease. Conclusions/Significance: All together, our findings show that AQP1 plays a role inside the cells through Lin-7/b-catenin interaction. Such a role of AQP1 is the same in human melanoma and endothelial cells, suggesting that AQP1 plays a global physiological role. A model is presented.
Versuch einer Vertheidigung der Pasquille; 1783
Creators: name: Michl, Anton
name: Mühl, Ant.
Publisher: name: Universitätsbibliothek der Ludwig-Maximilians-Universität München
Year: 2009

description: Mutmaßlicher Verfasser: Anton Michl oder Ant. Mühl. - Verfasser ermittelt in Holzmann/Bohatta, DAL, 1903, Band IV, Nummer 9463: "V: Michl, Anton. (BB) (Ky) Mühl, Ant. (Büchersamml. d. h. Ver. f. Ob. Bayern.)"
Fermi Surface and Band Structure of (Ca,La)FeAs2 Superconductor from Angle-Resolved Photoemission Spectroscopy
Creators: name: Liu, Xu
name: Liu, Defa
name: Zhao, Lin
name: Guo, Qi
name: Mu, Qingge
name: Chen, Dongyun
name: Shen, Bing
name: Yi, Hemian
name: Huang, Jianwei
name: He, Junfeng
name: Peng, Yingying
name: Liu, Yan
name: He, Shaolong
name: Liu, Guodong
name: Dong, Xiaoli
name: Zhang, Jun
name: Chen, Chuangtian
name: Xu, Zuyan
name: Ren, Zhi-an
name: Zhou, X. J.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The (Ca,R)FeAs2 (R=La,Pr and etc.) superconductors with a signature of superconductivity transition above 40 K possess a new kind of block layers that consist of zig-zag As chains. In this paper, we report the electronic structure of the new (Ca,La)FeAs2 superconductor investigated by both band structure calculations and high resolution angle-resolved photoemission spectroscopy measurements. Band structure calculations indicate that there are four hole-like bands around the zone center $Γ$(0,0) and two electron-like bands near the zone corner M(pi,pi) in CaFeAs2. In our angle-resolved photoemission measurements on (Ca0.9La0.1})FeAs2, we have observed three hole-like bands around the Gamma point and one electron-like Fermi surface near the M(pi,pi) point. These results provide important information to compare and contrast with the electronic structure of other iron-based compounds in understanding the superconductivity mechanism in the iron-based superconductors.
description: 10 pages, 4 figures
title: Comparison Of Scaling Performance Between Sidewalks Placed Using Hot and Cold Weather Concreting Procedures
Creators: name: Rudraraju , Likhitha
Publisher: name: University of Massachusetts Amherst
Year: 2023

description: This study investigates the performance of concrete sidewalks placed using hot and cold weather concreting practices. The effect that curing methods, types of deicers, and supplementary cementitious material content have on the scaling resistance of concrete is examined in the laboratory and the field. After one winter, petrographic analysis was conducted on the cores from the sidewalk panels.
The results from field evaluation indicate that the concrete sidewalks placed using hot weather concreting showed better resistance against scaling than those placed using cold weather concreting. The results also suggest that the effect of curing method depends on the concreting procedure type. The results confirm the maximum limits recommended by ACI 201.2R Guide for Durable Concrete, the mix proportions with fly ash less than 25% and slag less than 50% have shown better scaling resistance. Based on the petrographic analysis, a correlation between the properties of concrete determined through petrography and scaling on a sidewalk could not be determined.
title: Investigation of system performance of two cascaded organic Rankine cycles using low global warming potential working fluids
title: von Wameedh Abbas, M.Sc. ; Betreuer der Dissertation: Prof. Dr.-Ing. habil. Jadran Vrabec, Koreferent: Prof. Dr. rer. nat. Burak Atakan
titleType: Subtitle
Creators: name: Abbas, Wameedh
Publisher: name: Universität Paderborn
Year: 2023

description: Diese Dissertation bietet eine experimentelle und simulationsbasierte Bewertung der CORC-Systemleistung durch die Nutzung verschiedener Arbeitsfluide aus verschiedenen physio-chemischen Gruppen. Die Arbeit basiert auf einem 158 kW CORC-System, das aus drei Hauptkreisläufen besteht: Wärmequellenkreislauf, Hochtemperatur-ORC und Niedertemperatur-ORC. In dieser Arbeit wird die Systemleistung anhand des thermischen Wirkungsgrads und des exergetischen Wirkungsgrads gemessen, da sie die abgegebene Leistung im Verhältnis zum zugeführten Wärmestrom wiedergeben. Zusätzlich wird die Leistungsfähigkeit der Hauptkomponenten bewertet, indem der Turbinenwirkungsgrad, die Wärmeübertragung zwischen den kaskadierten ORC-Kreisläufen sowie der Exergieverlust in ihren vier Hauptkomponenten gemessen wird. Darüber hinaus konzentriert sich diese Arbeit auf die Untersuchung der Beziehung zwischen der Systemleistung und den thermophysikalischen Eigenschaften der Arbeitsfluide, wie z.B. der kritischen Temperatur, dem kritischen Druck, der Molasse und der Molekülstruktur. Diese Parameter werden über einen weiten Bereich von Betriebsbedingungen berücksichtigt, einschließlich Wärmequellentemperatur, Turbineneinlassdruck, Massenstrom des Arbeitsfluide, Überhitzungsgrad und Druckverhältnis.
description: This thesis provides experimental and simulation-based evaluations of CORC system performance by adopting various working fluids from different physico-chemical groups. The work is based on a 158 kW CORC system, consisting of three main cycles: heat source cycle, high-temperature ORC and low-temperature ORC. System performance is measured based on thermal efficiency and exergy efficiency, as they view power output in relation to the heat flow input. In addition, the performance of the main components is evaluated by measuring the turbine efficiency, the heat transfer between the two cascaded ORC as well as the exergy loss in their four main components. Moreover, it is focused on the relationship between system performance and the thermophysical properties of the working fluids, such as critical temperature, critical pressure, molar mass and molecular structure. These parameters are considered over a wide range of operating conditions, including heat source temperature, turbine inlet pressure, mass flow rate of working fluid, superheating degree and pressure ratio.
Top-philic Dark Matter in a Hybrid KSVZ axion framework
Creators: name: Ghosh, Anupam
name: Konar, Partha
name: Roshan, Rishav
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We explore a two-component dark matter scenario in an extended Kim-Shifman-Vainshtein-Zakharov (KSVZ) axion framework. This hybrid setup incorporates an extra $SU(2)_L$ complex singlet scalar whose lightest component plays the role of one of the dark matter, while the QCD axion of the KSVZ model acts as a second dark matter candidate. In this work, we focus on accentuating the role of vector-like quark that naturally emerges in the KSVZ extension on the dark matter and collider phenomenology. Here, we demonstrate that the presence of this colored particle can significantly affect the allowed dark matter parameter space of the scalar dark matter by opening up additional co-annihilation as well as the direct detection channels. Moreover, the interaction between the color particle with the top quark and scalar dark matter provides a unique topology to generate a boosted-top pair with considerable missing transverse momentum at the LHC. Using jet substructure variables and multivariate analysis, here we show that one can already exclude a vast region of parameter space with 139 $\text{fb}^{-1}$ integrated luminosity at 14 TeV LHC.
description: 43 pages, 15 figures, and 7 tables, accepted for publication in JHEP
Central limit theorem for the principal eigenvalue and eigenvector of Chung-Lu random graphs
Creators: name: Dionigi, Pierfrancesco
name: Garlaschelli, Diego
name: Hazra, Rajat Subhra
name: Hollander, Frank den
name: Mandjes, Michel
Publisher: name: arXiv
Year: 2022
Subjects: subject: Probability (math.PR)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 60B20, 60C05, 60K35

description: A Chung-Lu random graph is an inhomogeneous Erdős-Rényi random graph in which vertices are assigned average degrees, and pairs of vertices are connected by an edge with a probability that is proportional to the product of their average degrees, independently for different edges. We derive a central limit theorem for the principal eigenvalue and the components of the principal eigenvector of the adjacency matrix of a Chung-Lu random graph. Our derivation requires certain assumptions on the average degrees that guarantee connectivity, sparsity and bounded inhomogeneity of the graph.
Phrynobatrachus alleni Parker 1936
Creators: name: Miracle, Eulàlia Gassó
name: Van, Lars W.
name: Ostende, Den Hoek
name: Arntzen, Jan Willem
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Amphibia
Anura
Phrynobatrachidae
Phrynobatrachus
Phrynobatrachus alleni

description: Phrynobatrachus alleni Parker, 1936
Parker, 1936. Zool. Meded. Leiden, 19: 91.
Paratypes: RMNH 6594, 20 spec. Loc.: “Soforeh Place, Liberia ”. Leg.: J. Büttikofer and J.A. Sala.
 Remarks. The holotype is in the Natural History Museum in London (BM 1947.2.4.33, formerly BM 1929.6.1.12). Paratypes are also in London (BM 1927.9.27.112-117; BM 1935.9.2.14-19) and in the Museum of Comparative Zoology in Cambridge, Massachusetts (MCZ 11946-7, 11961-70, 11951-60).
description: Published as part of Miracle, Eulàlia Gassó, Van, Lars W., Ostende, Den Hoek & Arntzen, Jan Willem, 2007, Type specimens of amphibians in the National Museum of Natural History, Leiden, The Netherlands, pp. 25-68 in Zootaxa 1482 on page 51, DOI: 10.5281/zenodo.176896
An investigation of network partitioning to enhance performance of parallelized drainage models
Creators: name: Tiernan, Edward Davis
name: 0000-0001-7981-1495
Publisher: name: The University of Texas at Austin
Year: 2022
Subjects: Network partitioning
Parallel programming
1D hydraulic modeling
Saint-Venant simulation

description: Water drainage modeling codes need to be updated with parallel simulation capability to leverage modern computational trends. Parallelized finite-difference/volume simulation of 1D networks implies a solution to the network partitioning problem in Graph Theory. Myriad heuristic strategies exist for achieving a valid network partition set, as proving an optimal set is formally intractable. However, water drainage networks have received limited study in the context of network partitioning; existing strategies may not address the particular characteristics of 1D water drainage networks, i.e. directed, acyclic graphs (DAGs) with non-power law connectivity, imbalanced link weights, etc. Additionally, a comparison between partitioning algorithms is ambiguous; partition set quality remains undefined for drainage networks whose parallel simulation complexity scales on the total length of the system and number of inter-processor communications per time-step. Herein, a novel network partitioning algorithm designed for 1D water drainage networks, but valid for all DAGs, is presented. The novel algorithm, BIPquick, uses analogies to flow accumulation for stream delineation to determine partition delineation. BIPquick is shown to compare favorably, on the counts of partition size balance and connectivity, with multi-level partitioning methods, KaHIP and METIS, for a suite of regional-scale river basins in Texas. The critical role of connectivity in determining the quality of a partition set is established in a comparison of low-connectivity (BIPquick) partitioning vs high-connectivity (Link-Balance) partition for a state-of-the-art parallelized Saint-Venant solver, the SWMM5+ hydraulic engine developed by the National Center for Infrastructure Modeling and Management (NCIMM) based at the University of Texas at Austin.
title: Concentration of some heavy metals in Almeda Textile Factory wastewater and the nearby stream waters
Creators: name: Mesfin Medihin and Yirgalem Weldegebriel
Publisher: name: Journal of Science and Inclusive Development, Wolaita Sodo University
Year: 2019

description: Almeda textile factory has discharged its wastewater into the nearby streams. However, very limited report available on the concentration levels of the heavy metals in the wastewater, and no study has been carried out on the nearby streams. Therefore, concentration levels of cadmium (Cd), cobalt (Co), chromium (Cr), copper (Cu), iron (Fe), nickel (Ni), manganese (Mn), lead (Pb), and zinc (Zn) in Almeda textile factory wastewater and the nearby stream waters were estimated using a Varian AA240FS Fast Sequential Atomic Absorption Spectrometer. The study revealed that the average concentrations (ppm) of Cd (0.02), Pb (0.20), and Mn (0.60) in the wastewater were higher than the maximum permissible limits. On the other hand, the average concentrations (ppm) of Co (0.02), Cu (0.21), Fe (1.20), Cr (0.02), Ni (0.03), and Zn (0.20) were lower than the limits. Similarly, the average concentrations (ppm) of Cd (0.02) and Mn (0.05 - 0.28) in the nearby stream waters were higher than the limits; however, the average concentrations (ppm) of Co (0.03 - 0.04), Cr (0.02 - 0.04), Cu (0.08 - 0.09), Fe (0.06 - 0.20), Ni (0.03 - 0.09), Pb (0.02 - 0.07), and Zn (0.04 - 0.09) were lower than the limits. Because the heavy metals are non-biodegradable, continuous discharge of a large amount of Almeda textile factory wastewater in to the surrounding can result their accumulation in the environment. Therefore, periodic assessment of the heavy metals in the nearby streams should be carried out.

Keywords: Heavy metals, Industrial waste water, Atomic absorption spectroscopy, Pollution
Interpolation of subdivision features for curved geometry modeling
Creators: name: Jiménez-Ramos, Albert
name: Gargallo-Peiró, Abel
name: Roca, Xevi
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Computer and information sciences

description: We present a nodal interpolation method to approximate a subdivision model. The main application is to model and represent curved geometry without gaps and preserving the required simulation intent. Accordingly, we devise the technique to maintain the necessary sharp features and smooth the indicated ones. This sharp-to-smooth modeling capability handles unstructured configurations of the simulation points, curves, and surfaces. The surfaces correspond to initial linear triangulations that determine the sharp point and curve features. The method automatically suggests a subset of sharp features to smooth which the user modifies to obtain a limit model preserving the initial points. This model reconstructs the curvature by subdivision of the initial mesh, with no need of an underlying curved geometry model. Finally, given a polynomial degree and a nodal distribution, the method generates a piece-wise polynomial representation interpolating the limit model. We show numerical evidence that this approximation, naturally aligned to the subdivision features, converges to the model geometrically with the polynomial degree for nodal distributions with sub-optimal Lebesgue constant. We also apply the method to prescribe the curved boundary of a high-order volume mesh. We conclude that our sharp-to-smooth modeling capability leads to curved geometry representations with enhanced preservation of the simulation intent.
On Error Correction for Nonvolatile Processing-In-Memory
Creators: name: Cılasun, Hüsrev
name: Resch, Salonik
name: Chowdhury, Zamshed I.
name: Zabihi, Masoud
name: Lv, Yang
name: Zink, Brandon
name: Wang, Jian-Ping
name: Sapatnekar, Sachin S.
name: Karpuzcu, Ulya R.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Emerging Technologies (cs.ET)
subject: FOS: Computer and information sciences

description: Processing in memory (PiM) represents a promising computing paradigm to enhance performance of numerous data-intensive applications. Variants performing computing directly in emerging nonvolatile memories can deliver very high energy efficiency. PiM architectures directly inherit the vulnerabilities of the underlying memory substrates, but they also are subject to errors due to the computation in place. Numerous well-established error correcting codes (ECC) for memory exist, and are also considered in the PiM context, however, they typically ignore errors that occur throughout computation. In this paper we revisit the error correction design space for nonvolatile PiM, considering both storage/memory and computation-induced errors, surveying several self-checking and homomorphic approaches. We propose several solutions and analyze their complex performance-area-coverage trade-off, using three representative nonvolatile PiM technologies. All of these solutions guarantee single error correction for both, bulk bitwise computations and ordinary memory/storage errors.
A Model for Multi-Agent Heterogeneous Interaction Problems
Creators: name: Hsu, Christopher D.
name: Haile, Mulugeta A.
name: Chaudhari, Pratik
Publisher: name: arXiv
Year: 2022
Subjects: subject: Multiagent Systems (cs.MA)
subject: FOS: Computer and information sciences

description: We introduce a model for multi-agent interaction problems to understand how a heterogeneous team of agents should organize its resources to tackle a heterogeneous team of attackers. This model is inspired by how the human immune system tackles a diverse set of pathogens. The key property of this model is a ``cross-reactivity'' kernel which enables a particular defender type to respond strongly to some attacker types but weakly to a few different types of attackers. We show how due to such cross-reactivity, the defender team can optimally counteract a heterogeneous attacker team using very few types of defender agents, and thereby minimize its resources. We study this model in different settings to characterize a set of guiding principles for control problems with heterogeneous teams of agents, e.g., sensitivity of the harm to sub-optimal defender distributions, and competition between defenders gives near-optimal behavior using decentralized computation of the control. We also compare this model with existing approaches including reinforcement-learned policies, perimeter defense, and coverage control.
description: 8 pages, 7 figures
Incrementando a confiabilidade em redes IoT de dados nomeados a partir de modelos de reputação distribuídos
Creators: name: De Sousa, Antonio Mateus
name: Leobino Sampaio
Publisher: name: Zenodo
Year: 2022
Subjects: Redes nomeadas, Internet das coisas, Segurança, Sistemas distribuídos

description: A Internet das coisas (IoT) se apresenta como um ambiente altamente heterogêneo, caracterizado pela interconexão de dispositivos distintos. A arquitetura TCP/IP atual não foi projetada para lidar com tais condições, o que pode prejudicar o crescimento da rede seja pela escassez de endereços IPs ou problemas de roteamento. Dessa forma, as redes de dados nomeados (NDN) surgem como uma arquitetura alternativa que pode solucionar os desafios citados. Os atributos nativos de NDN incluem in-network caching, named-based routing, e segurança a nível de pacote. Todavia, apesar dos benefícios da NDN, o modelo de segurança ainda se baseia em um esquema de infraestrutura de chaves públicas (PKI), que se trata de uma abordagem logicamente centralizada, podendo impactar negativamente na escalabilidade de uma rede IoT. Além disso, as técnicas atuais de segurança visam garantir o básico em uma comunicação segura (e.g. autenticação e privacidade), porém não abordam a confiança uma vez que dispositivos podem ser hackeados ou simplesmente atuarem de forma bizantina. Sendo assim, argumentamos que apenas a criptografia não garante uma real confiança no fornecimento de serviços/conteúdos. Com base nisso, neste trabalho discutimos a eficiência do modelo de segurança da NDN em um cenário IoT.
INITIATING THE REGULATION OF ELECTRONIC CURRENCY AS EVIDENCE OF MONEY LAUNDERING IN INDONESIA
Creators: name: ADEX YUDISWAN
name: BUDI SANTOSO
name: R.B.  SULARTO
Publisher: name: Zenodo
Year: 2023
Subjects: Regulation, Currency, Electronic, Evidence, Criminal Act, Money Laundering, Indonesia.

description: Abstract
This study aims to examine (1) the existence and development of electronic currencies associated with indications of money laundering in Indonesia; (2) the regulatory conditions and concept of proving electronic currency associated with money laundering in Indonesia; (3) The concept of proving electronic currency in money laundering which provides more legal certainty.  The research method used is empirical juridical with a statutory approach, concept approach, and case studies. The results showed that; (1) The existence and development of electronic currencies in Indonesia has a large market share in E-money activities or electronic transactions as well as an increasingly sophisticated money laundering mode. (2) Regulatory Conditions and Concept of Electronic Currency Proof Associated with Money Laundering in Indonesia Several laws that partially regulate the existence of electronic evidence, namely: Law Number 8 of 1997 concerning Company Documents; Law Number 2 of 2001 concerning Amendments to Law Number 31 of 1999 concerning the Eradication of Criminal Acts of Corruption; Law No. 15 of 2003 concerning the Stipulation of Government Regulations in Lieu of Law No. 1 of 2002 concerning the Eradication of Criminal Acts of Terrorism; Law No. 21/2007 on the Eradication of Trafficking in Persons; Law Number 8 of 2010 concerning Money Laundering. Law Number 19 of 2016 concerning Amendments to Law Number 11 of 2008 concerning Information and Electronic Transactions (ITE Law). (3) The concept of proving electronic currency in money laundering that provides more legal certainty guarantees through 4 (four) proof systems, as follows: 1) Proof Based on Conviction in Time; 2) Positive statutory proof system (positief wettelijk bewijstheorie); 3) the system of proof based on the judge's conviction with logical reasons (la conviction raisonee); 4) Negative statutory proof system (negatief wettelijk). Furthermore, in handling money launderyng, further regulation should be regulated related to electronic currency as evidence as referred to in the Code of Criminal Procedure; and/or; b. Other evidence in the form of information spoken, sent, received, or stored electronically by optical or similar optical instruments and documents