cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Inventarisatie van specifieke internationaliseringsbehoeften van vrouwelijke ondernemers.
Creators: name: Martens, Jeanne
name: Weerden, Louise Van
Publisher: name: figshare
Year: 2019
Subjects: subject: Economics
subject: 140210 International Economics and International Finance
subject: FOS: Economics and business

description: In dit onderzoek komen de specifieke internationaliseringsbehoeften en belemmeringen van Nederlandse vrouwelijke ondernemers aan bod. Dit rapport beschrijft de ervaringen van Nederlandse vrouwelijke ondernemers over de succesfactoren en belemmeringen van internationaal zaken doen en geeft de meningen weer van vrouwelijke ondernemers op de vraag in hoeverre de ondersteuning van internationaal ondernemerschap door overheidsinstanties aansluit bij hun specifieke internationaliseringsbehoeften. Deze ervaringen en meningen zijn verkregen door het uitvoeren van focusgroep discussies als kwalitatieve onderzoeksmethode.
Quasioptical modeling of wave beams with and without mode conversion: I. Basic theory
Creators: name: Dodin, I. Y.
name: Ruiz, D. E.
name: Yanagihara, K.
name: Zhou, Y.
name: Kubo, S.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: This work opens a series of papers where we develop a general quasioptical theory for mode-converting electromagnetic beams in plasma and implement it in a numerical algorithm. Here, the basic theory is introduced. We consider a general quasimonochromatic multi-component wave in a weakly inhomogeneous linear medium with no sources. For any given dispersion operator that governs the wave field, we explicitly calculate the approximate operator that governs the wave envelope $ψ$ to the second order in the geometrical-optics parameter. Then, we further simplify this envelope operator by assuming that the gradient of $ψ$ transverse to the local group velocity is much larger than the corresponding parallel gradient. This leads to a parabolic differential equation for $ψ$ ("quasioptical equation") in the basis of the geometrical-optics polarization vectors. Scalar and mode-converting vector beams are described on the same footing. We also explain how to apply this model to electromagnetic waves in general. In the next papers of this series, we report successful quasioptical modeling of radiofrequency wave beams in magnetized plasma based on this theory.
description: This is the first part of the three-paper series that also includes arXiv:1903.01357 and arXiv:1903.01364
Effects of Transceiver Jitter on the Performance of Optical Scattering Communication Systems
Creators: name: Shen, Zanqiu
name: Ma, Jianshe
name: Provost, Serge B.
name: Su, Ping
Publisher: name: arXiv
Year: 2024
Subjects: subject: Signal Processing (eess.SP)
subject: Optics (physics.optics)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Physical sciences

description: In ultraviolet communications, the transceiver jitter effects have been ignored in previous studies, which can result in non-negligible performance degradation especially in vibration states or in mobile scenes. To address this issue, we model the relationship between the received power and transceiver jitter by making use of a moment-based density function approximation method. Based on this relationship, we incorporate the transceiver jitter effects in combination with Poisson distribution. The error rate results are obtained assuming on-off key modulation with optimal threshold based detection. We validate the error rate expressions by comparing the analytical results with Monte-Carlo simulation results. The results show that the transceiver jitter effects cause performance degradation especially in smaller transceiver elevation angles or in shorter distances, which are often adopted in short-range ultraviolet communications. The results also show that larger elevation angle cases have a better performance with respect to anti-jitter and may perform better compared to smaller elevation angle situations in the case of larger standard deviation of jitter. This work studies for the first time the transceiver jitter effects in ultraviolet communications and provides guidelines for experimental system design.
description: 5 pages, 2 figures, comments are welcome!
Quantum Measurements and Contextuality
Creators: name: Griffiths, Robert B.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In quantum physics the term `contextual' can be used in more than one way. One usage, here called `Bell contextual' since the idea goes back to Bell, is that if $A$, $B$ and $C$ are three quantum observables, with $A$ compatible (i.e., commuting) with $B$ and also with $C$, whereas $B$ and $C$ are incompatible, a measurement of $A$ might yield a different result (indicating that quantum mechanics is contextual) depending upon whether $A$ is measured along with $B$ (the $\{A,B\}$ context) or with $C$ (the $\{A,C\}$ context). An analysis of what projective quantum measurements measure shows that quantum theory is Bell noncontextual: the outcome of a particular $A$ measurement when $A$ is measured along with $B$ would have been exactly the same if $A$ had, instead, been measured along with $C$. A different definition, here called `globally (non)contextual' refers to whether or not there is ('noncontextual') or is not ('contextual') a single joint probability distribution that simultaneously assigns probabilities in a consistent manner to the outcomes of measurements of a certain collection of observables, not all of which are compatible. A simple example shows that such a joint probability distribution can exist even in a situation where the measurement probabilities cannot refer to properties of a quantum system, and hence lack physical significance, even though mathematically well-defined. It is noted that the quantum sample space, a projective decomposition of the identity, required for interpreting measurements of incompatible properties in different runs of an experiment using different types of apparatus has a tensor product structure, a fact sometimes overlooked.
description: 14 pages, 1 figure. v2: Significant modifications of Sec. 5, but basic conclusions are unchanged
Carnet nº 1 : description des travaux accomplis sur le tour de France (p. 41)
Creators: name: Péraire, Lucien
name: CNRS
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2023

description: created: 15-8-1928
Structural aspects of twin and pure twin groups
Creators: name: Bardakov, Valeriy
name: Singh, Mahender
name: Vesnin, Andrei
Publisher: name: arXiv
Year: 2018
Subjects: subject: Group Theory (math.GR)
subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 57M27, 57M25

description: The twin group $T_n$ is a Coxeter group generated by $n-1$ involutions and the pure twin group $PT_n$ is the kernel of the natural surjection of $T_n$ onto the symmetric group on $n$ letters. In this paper, we investigate structural aspects of twin and pure twin groups. We prove that the twin group $T_n$ decomposes into a free product with amalgamation for $n>4$. It is shown that the pure twin group $PT_n$ is free for $n=3,4$, and not free for $n\ge 6$. We determine a generating set for $PT_n$, and give an upper bound for its rank. We also construct a natural faithful representation of $T_4$ into $\operatorname{Aut}(F_7)$. In the end, we propose virtual and welded analogues of these groups and some directions for future work.
description: 20 pages, 7 figures, minor corrections and additions done, to appear in Geometriae Dedicata
Density Matrix Renormalization Group Study of the $S=1/2$ Antiferromagnetic Heisenberg Chains with Quasiperiodic Exchange Modulation
Creators: name: Hida, Kazuo
Publisher: name: arXiv
Year: 1999
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: The low energy behavior of the $S=1/2$ antiferromagnetic Heisenberg chains with precious mean quasiperiodic exchange modulation is studied by the density matrix renormalization group method. Based on the scaling behavior of the energy gap distribution, it is found that the ground state of this model belongs to the universality class different from that of the XY chain for which the precious mean exchange modulation is marginal. This result is consistent with the recent bosonization analysis of Vidal et al.
description: 4 pages, 6 figures
Not So Fast: Analyzing the Performance of WebAssembly vs. Native Code
Creators: name: Jangda, Abhinav
name: Powers, Bobby
name: Berger, Emery
name: Guha, Arjun
Publisher: name: arXiv
Year: 2019
Subjects: subject: Programming Languages (cs.PL)
subject: FOS: Computer and information sciences

description: All major web browsers now support WebAssembly, a low-level bytecode intended to serve as a compilation target for code written in languages like C and C++. A key goal of WebAssembly is performance parity with native code; previous work reports near parity, with many applications compiled to WebAssembly running on average 10% slower than native code. However, this evaluation was limited to a suite of scientific kernels, each consisting of roughly 100 lines of code. Running more substantial applications was not possible because compiling code to WebAssembly is only part of the puzzle: standard Unix APIs are not available in the web browser environment. To address this challenge, we build Browsix-Wasm, a significant extension to Browsix that, for the first time, makes it possible to run unmodified WebAssembly-compiled Unix applications directly inside the browser. We then use Browsix-Wasm to conduct the first large-scale evaluation of the performance of WebAssembly vs. native. Across the SPEC CPU suite of benchmarks, we find a substantial performance gap: applications compiled to WebAssembly run slower by an average of 45% (Firefox) to 55% (Chrome), with peak slowdowns of 2.08x (Firefox) and 2.5x (Chrome). We identify the causes of this performance degradation, some of which are due to missing optimizations and code generation issues, while others are inherent to the WebAssembly platform.
description: Accepted (to appear) at USENIX Annual Technical Conference 2019
Negatively Charged Strangelet Search using the E864 Spectrometer at the AGS
Creators: name: Van Buren, Gene
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We provide a status report on the progress of searching for negatively charged strangelets using the E864 spectrometer at the AGS. About 200 million recorded events representing approximately 14 billion 10% central interactions of Au + Pt at 11.5 GeV/c taken during the 1996-1997 run of the experiment are used in the analysis. No strangelet candidates are seen for charges Z=-1 and Z=-2, corresponding to a 90% confidence level for upper limits of strangelet production of ~1 x 10^{-8} and ~4 x 10^{-9} per central collision respectively. The limits are nearly uniform over a wide range of masses and are valid only for strangelets which are stable or have lifetimes greater than ~50 ns.
description: 6 pages, 4 figures; Talk at SQM'98, Padova, Italy (July 20-24, 1998)
Hadron Structure in the Non-Perturbative Regime of QCD: Isospin Symmetry and its Violation
Creators: name: Meißner, Ulf-G.
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: I discuss recent progress made in calculating electromagnetic corrections in the framework of the effective field theory of QCD. In the case of elastic pion-pion scattering, strong interaction predictions have been worked out to two loop accuracy. I present first results for the electromagnetic corrections in the case of neutral pions. Here, the only sizeable effect comes from the charged to neutral pion mass difference. In the presence of nucleons, isospin violation can be measured in threshold pion photoproduction. I review the present status of the theoretical predictions and the experimental data. I argue that a deeper understanding of isospin violation based on a more precise study of such reactions can be achieved.
description: 10 pp, LaTeX file, 3 figures, uses espcrc1.sty and epsf, plenary talk, QULEN '97, Osaka, May 1997, to be published in the proceedings
Stiretrus ornatus
Creators: name: Roell, Talita
name: Lemaître, Valérie A.
name: Webb, Michael D.
name: Campos, Luiz A.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Pentatomidae
Stiretrus
Stiretrus ornatus

description: ornatus (Stiretrus) Dallas 1851: 80–81. [Fig. 142]
 Original data: “ ♀ ”. “a. MeXico.” [syntype (s)]
LECTOTYPE ♀ (designated by Distant 1880: 28): purple-margined lectotype disc; red-margined type disc; “ Mexico / 48 11”; “6. STIRETRUS ORNATUS,”; “a”; “NHMUK 010592386”. Fourth and fifth right and left antennomeres, and legs (except the right anterior one) missing (Fig. 142).
 Current status: Stiretrus anchorago (Fabricius, 1775) (First synonymised by Stål 1870: 25 to S. (Oncogaster) personatus GERM.; then synonymised by Distant 1880: 28 to Stiretrus anchorago (Fabricius); see Schouteden 1907: 9; yet, Thomas 1992: 109–110 listed a new synonymy.).
 Note: From Dallas’s original description, it is impossible to know how many specimens he had, but we know that they were female. Walker (1867a: 115) listed one specimen from Mexico, adding a precision: it came from Mr Argent’s collection. We have found one female specimen matching these details. It is likely that Dallas just had this unique specimen when he described the species, but we cannot be sure. This, notwithstanding Distant’s (1880: 28) statement, which highlighted the fact that “the type” was the “only representative [of that species] in the British Museum”. We, however, accept Distant’s mention of “the type” as a valid lectotype designation before 2000 (ICZN 1999: Art. 74.5); his marking the specimen by a red-margined “Type” disc as he arranged the 63 Pentatomidae drawers in 1899–1900 (Hampson 1906: 627) confirms which specimen was meant.
description: Published as part of Roell, Talita, Lemaître, Valérie A., Webb, Michael D. & Campos, Luiz A., 2023, An annotated and illustrated Type Catalogue of the predacious Shieldbugs (Hemiptera: Heteroptera: Pentatomidae: Asopinae) in the Collection of the Natural History Museum, London, pp. 1-105 in Zootaxa 5232 (1) on page 66, DOI: 10.11646/zootaxa.5232.1.1, http://zenodo.org/record/7609794
External Fluctuations in a Pattern-Forming Instability
Creators: name: Garcia-Ojalvo, J.
name: Sancho, J. M.
Publisher: name: arXiv
Year: 1996
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: The effect of external fluctuations on the formation of spatial patterns is analysed by means of a stochastic Swift-Hohenberg model with multiplicative space-correlated noise. Numerical simulations in two dimensions show a shift of the bifurcation point controlled by the intensity of the multiplicative noise. This shift takes place in the ordering direction (i.e. produces patterns), but its magnitude decreases with that of the noise correlation length. Analytical arguments are presented to explain these facts.
description: 11 pages, Revtex, 10 Postscript figures added with psfig style (included). To appear in Physical Review E
$q$-Deformed Einstein equations from entropic force
Creators: name: Şenay, Mustafa
name: Kibaroğlu, Salih
Publisher: name: arXiv
Year: 2018
Subjects: subject: General Physics (physics.gen-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this study, we investigate the influences of fermionic $q$-deformation on the Einstein equations by taking into account of Verlinde's entropic gravity approach and Strominger's proposal on quantum black holes. According to Verlinde's proposal, gravity is interpreted as an entropic force. Moreover, Strominger's suggetion claims that extremal black holes obey deformed statistics instead of the standard Bose or Fermi statistics. Inspired by Verlinde's and Strominger's suggestions, we represent some thermostatistical functions of VPJC-type $q$-deformed fermion gas model for the high-temperature limit. Applying the Verlinde's entropic gravity approach to the $q$-deformed entropy function, $q$-deformed Einstein equations with the effective cosmological constant are derived. The results obtained in this work are compared with the related works in the literature.
description: 10 pages, 1 figure
Functional genetic evaluation of DNA house-cleaning enzymes in the malaria parasite: dUTPase and Ap4AH are essential in Plasmodium berghei but ITPase and NDH are dispensable
Creators: name: Hirdesh Kumar
name: Kehrer, Jessica
name: Singer, Mirko
name: Reinig, Miriam
name: Santos, Jorge M.
name: Mair, Gunnar R.
name: Frischknecht, Friedrich
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Pharmacology
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Background: Cellular metabolism generates reactive oxygen species. The oxidation and deamination of the deoxynucleoside triphosphate (dNTP) pool results in the formation of non-canonical, toxic dNTPs that can cause mutations, genome instability, and cell death. House-cleaning or sanitation enzymes that break down and detoxify non-canonical nucleotides play major protective roles in nucleotide metabolism and constitute key drug targets for cancer and various pathogens. We hypothesized that owing to their protective roles in nucleotide metabolism, these house-cleaning enzymes are key drug targets in the malaria parasite. Methods: Using the rodent malaria parasite Plasmodium berghei we evaluate here, by gene targeting, a group of conserved proteins with a putative function in the detoxification of non-canonical nucleotides as potential antimalarial drug targets: they are inosine triphosphate pyrophosphatase (ITPase), deoxyuridine triphosphate pyrophosphatase (dUTPase) and two NuDiX hydroxylases, the diadenosine tetraphosphate (Ap4A) hydrolase and the nucleoside triphosphate hydrolase (NDH). Results: While all four proteins are expressed constitutively across the intraerythrocytic developmental cycle, neither ITPase nor NDH are required for parasite viability. dutpase and ap4ah null mutants, on the other hand, are not viable suggesting an essential function for these proteins for the malaria parasite. Conclusions: Plasmodium dUTPase and Ap4A could be drug targets in the malaria parasite.
Animation Techniques in Human-Robot Interaction User Studies: a Systematic Literature Review
Creators: name: Schulz, Trenton
name: Torresen, Jim
name: Herstad, Jo
Publisher: name: arXiv
Year: 2018
Subjects: subject: Robotics (cs.RO)
subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: There are many different ways a robot can move in Human-Robot Interaction. One way is to use techniques from film animation to instruct the robot to move. This article is a systematic literature review of human-robot trials, pilots, and evaluations that have applied techniques from animation to move a robot. Through 27 articles, we find that animation techniques improves individual's interaction with robots, improving individual's perception of qualities of a robot, understanding what a robot intends to do, and showing the robot's state, or possible emotion. Animation techniques also help people relate to robots that do not resemble a human or robot. The studies in the articles show further areas for research, such as applying animation principles in other types of robots and situations, combining animation techniques with other modalities, and testing robots moving with animation techniques over the long term.
description: 23 pages, 6 tables
title: 02_1381
Creators: name: Wesley Baldwin, John
name: Baldwin, John W.
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2018
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: L'ensemble de ces notes ont été crée par John Baldwin lors d'une de ses premières périodes de résidence à Paris. Ces documents comprennent tous les magistri qu’il avait pu rencontrer dans ses sources. Aux XIIème et XIIIème siècles, les universités n'existant pas encore, le titre de magister s'il évoque certainement une compétence n'est pas rattaché de façon systématique au passage par les écoles. De surcroît, les magistris sont le plus souvent désignés par leur seul prénom. La lecture de ces données est donc difficile et suppose un long travail pour tenter d'identifier un individu auquel on pourrait rattacher plusieurs mentions. John Baldwin avait donc renoncé à utiliser ces données pour donner un prolongement à sa magnifique étude sur les gradués d'université et leur emploi par les Capétiens et les Plantagenêts. Néanmoins, il a conservé ces données et elles sont potentiellement très utile dans le cadre de Studium, comme le sont toutes les mentions dans les volumes des Fasti Ecclesiae Gallicanae de chanoines portant ce titre de magister sans autres précisions. L'ampleur des dépouillements rend ces données très utiles et nous devons une grande reconnaissance à John Baldwin pour avoir pris la peine de faire photocopier ses fiches et de nous les avoir transmises amicalement.
Les données ainsi que les images des fiches sont accessibles sur le site Internet à l'adresse suivante : http://studium-baldwin.lamop.fr/.
Les transcriptions des fiches ont été effectuées par des étudiants de Paris 1 Panthéon - Sorbonne mais elles n'ont pas été corrigées par la suite.
description: Relation: https://lamop.hypotheses.org/
Jalloides opulentus Distant 1911
Creators: name: Roell, Talita
name: Lemaître, Valérie A.
name: Webb, Michael D.
name: Campos, Luiz A.
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Pentatomidae
Jalloides
Jalloides opulentus

description: opulentus (Neoglypsus) Distant 1890a: 159. [Fig. 137]
 Original data: “Hab. Chang Yang. (Pratt.)” [syntype (s)]
LECTOTYPE ♀ (designated by Thomas 1994: 174): purple-margined lectotype disc; red-margined type [H. T.] disc; “Chang Yang (Pratt)”; “ opulentus Dist. [Distant’s handwriting]” “Distant Coll. 1911–383.”; “NHMUK 010592303”. Genital plates disjointed (Fig. 137).
 Current status: Dinorhynchus opulentus (Distant, 1890) (see Schouteden 1907: 64).
 Note: Thomas (1994: 174) stated: “ Holotype female of Neoglypsus opulentus was examined in BM(NH).” It is clear that Thomas examined the specimen labelled as type that we have found. There is no evidence that this was the only specimen Distant used to describe the species, but this is the only specimen of this species in the collection and we therefore accept that, by calling the specimen “ Holotype ”, Thomas has designated a lectotype by inference of “ holotype ” (ICZN 1999: Art. 74.6).
description: Published as part of Roell, Talita, Lemaître, Valérie A., Webb, Michael D. & Campos, Luiz A., 2023, An annotated and illustrated Type Catalogue of the predacious Shieldbugs (Hemiptera: Heteroptera: Pentatomidae: Asopinae) in the Collection of the Natural History Museum, London, pp. 1-105 in Zootaxa 5232 (1) on page 65, DOI: 10.11646/zootaxa.5232.1.1, http://zenodo.org/record/7609794
Additional file 1 of Revealing complex mosquito behaviour: a review of current automated video tracking systems suitable for tracking mosquitoes in the field
Creators: name: Bredt, Beatrice H.
name: Tripet, Frédéric
name: Müller, Pie
Publisher: name: figshare
Year: 2025
Subjects: subject: Ecology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Information Systems not elsewhere classified
subject: Cancer
subject: Science Policy

description: Additional file 1
A novel transgenic zebrafish line allows for in vivo quantification of autophagic activity in neurons
Creators: name: Sataree Khuansuwan
name: Barnhill, Lisa M.
name: Sizhu Cheng
name: Bronstein, Jeff M.
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Neuroscience
subject: Pharmacology
subject: Science Policy
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer

description: The pathophysiology of most neurodegenerative diseases includes aberrant accumulation of protein aggregates. Recent evidence highlights the role of protein degradation pathways in neurodegeneration. Concurrently, genetic tools have been generated to enable zebrafish, Danio rerio, to be used as an animal model to study neurodegenerative processes. In addition to optical clarity and fast ex utero development, the zebrafish brain is relatively small and has conserved structures with its mammalian counterparts. To take advantage of this model organism and to aid further studies on autophagy and neurodegeneration, we created a stable transgenic zebrafish line that expresses eGFP-Map1lc3b specifically in post-mitotic neurons under the elavl3 promoter. This line is useful for indirectly monitoring autophagic activity in neurons in vivo and screening for macroautophagy/autophagy-modulating compounds. We determined the applicability of this transgenic line by modulating and quantifying the number of autophagosomes via treatment with a known autophagy inducer (rapamycin) and inhibitors (3-methyladenine, protease inhibitors). Additionally, we proposed an in vivo method for quantifying rates of autophagosome accumulation, which can be used to infer occurrence of autophagic flux. Last, we tested two FDA-approved drugs currently undergoing clinical studies for Parkinson disease, isradipine and nilotinib, and found that isradipine did not modulate autophagy, whereas nilotinib induced both autophagosome number and autophagic flux. It is hoped that others will find this line useful as an in vivo vertebrate model to find or validate autophagy modulators that might be used to halt the progression of neurodegenerative diseases.
Optimising growth of structure constraints on modified gravity
Creators: name: Perenon, Louis
name: Bel, Julien
name: Maartens, Roy
name: de la Cruz-Dombriz, Alvaro
Publisher: name: arXiv
Year: 2019
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We use growth of structure data to constrain the effective field theory of dark energy. Considering as case study Horndeski theories with the speed of gravitational waves equal to that of light, we show how constraints on the free parameters and the large-scale structure phenomenological functions can be improved by two ingredients: firstly by complementing the set of redshift-space distortions data with the three recent measurements of the growth rate $f$ and the amplitude of matter fluctuations $σ_8$ from the VIPERS and SDSS collaborations; secondly by applying a local Solar System bound on the variation of the Newton constant. This analysis allows us to conclude that: $i)$ despite firmly restricting the predictions of weaker gravity, the inclusion of the Solar System bound does not prevent suppressed growth relative to the standard model $Λ$CDM at low redshifts; $ii)$ the same bound in conjunction with the growth of structure data strongly restricts the redshift evolution of the gravitational slip parameter to be close to unity and the present value is constrained to one at the $10^{-3}$ level; $iii)$ the growth of structure data favours a fifth force contribution to the effective gravitational coupling at low redshifts and at more than one sigma at present time.
description: Accepted for publication in JCAP
WikiConv: A Corpus of the Complete Conversational History of a Large Online Collaborative Community
Creators: name: Hua, Yiqing
name: Danescu-Niculescu-Mizil, Cristian
name: Taraborelli, Dario
name: Thain, Nithum
name: Sorensen, Jeffery
name: Dixon, Lucas
Publisher: name: arXiv
Year: 2018
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: We present a corpus that encompasses the complete history of conversations between contributors to Wikipedia, one of the largest online collaborative communities. By recording the intermediate states of conversations---including not only comments and replies, but also their modifications, deletions and restorations---this data offers an unprecedented view of online conversation. This level of detail supports new research questions pertaining to the process (and challenges) of large-scale online collaboration. We illustrate the corpus' potential with two case studies that highlight new perspectives on earlier work. First, we explore how a person's conversational behavior depends on how they relate to the discussion's venue. Second, we show that community moderation of toxic behavior happens at a higher rate than previously estimated. Finally the reconstruction framework is designed to be language agnostic, and we show that it can extract high quality conversational data in both Chinese and English.
Novel method for the direct measurement of the tau lepton dipole moments
Creators: name: Fu, J.
name: Giorgi, M. A.
name: Henry, L.
name: Marangotto, D.
name: Vidal, F. Martinez
name: Merli, A.
name: Neri, N.
name: Vidal, J. Ruiz
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A novel method for the direct measurement of the elusive magnetic and electric dipole moments of the tau lepton is presented. The experimental approach relies on the production of tau+ leptons from Ds+ -> tau+ nu_tau decays, originated in fixed-target collisions at the LHC. A sample of polarized tau+ leptons is kinematically selected and subsequently channeled in a bent crystal. The magnetic and electric dipole moments of the tau+ lepton are measured by determining the rotation of the spin-polarization vector induced by the intense electromagnetic field between crystal atomic planes. The experimental technique is discussed along with the expected sensitivities.
description: 4 pages, 4 figures, 2 pages supplemental material. Accepted by Phys.Rev.Lett
Role of Orbital Degeneracy in Double Exchange Systems
Creators: name: Laad, M. S.
name: Craco, L.
name: Müller-Hartmann, E.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We investigate the role of orbital degeneracy in the double exchange (DE) model. In the $J_{H}\to\infty$ limit, an effective generalized ``Hubbard'' model incorporating orbital pseudospin degrees of freedom is derived. The model possesses an exact solution in one- and in infinite dimensions. In 1D, the metallic phase off ``half-filling'' is a Luttinger liquid with pseudospin-charge separation. Using the $d=\infty$ solution for our effective model, we show how many experimental observations for the well-doped ($x\simeq 0.3$) three-dimensional manganites $La_{1-x}Sr_{x}MnO_{3}$ can be qualitatively explained by invoking the role of orbital degeneracy in the DE model.
description: 8 pages, 2 figures, submitted to Phys. Rev. B
Spin diffusion length and polarization of ferromagnetic metals measured by spin-absorption technique in lateral spin valves
Creators: name: Zahnd, G.
name: Vila, Laurent
name: Pham, V.
name: Cosset-Cheneau, M
name: Lim, W
name: Brenac, A
name: Laczkowski, P
name: Marty, A
name: Attané, J
Publisher: name: arXiv
Year: 2018
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present measurements of pure spin current absorption on lateral spin valves. By varying the width of the absorber we demonstrate that spin current absorption measurements enable to characterize efficiently the spin transport properties of ferromagnetic elements. The analytical model used to describe the measurement takes into account the polarization of the absorber. The analysis of the measurements allows thus determining the polarization and the spin diffusion length of a studied material independently, contrarily to most experiments based on lateral spin valves where those values are entangled. We report the spin transport parameters of some of the most important materials used in spinorbitronics (Co60Fe40, Ni81Fe19, Co, Pt, and Ta), at room and low (10 K) temperatures.
description: Physical Review B, In press
Different Algorithms (Might) Uncover Different Patterns: A Brain-Age Prediction Case Study
Creators: name: Ettling, Tobias
name: Saba-Sadiya, Sari
name: Roig, Gemma
Publisher: name: arXiv
Year: 2024
Subjects: subject: Signal Processing (eess.SP)
subject: Machine Learning (cs.LG)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences

description: Machine learning is a rapidly evolving field with a wide range of applications, including biological signal analysis, where novel algorithms often improve the state-of-the-art. However, robustness to algorithmic variability - measured by different algorithms, consistently uncovering similar findings - is seldom explored. In this paper we investigate whether established hypotheses in brain-age prediction from EEG research validate across algorithms. First, we surveyed literature and identified various features known to be informative for brain-age prediction. We employed diverse feature extraction techniques, processing steps, and models, and utilized the interpretative power of SHapley Additive exPlanations (SHAP) values to align our findings with the existing research in the field. Few of our models achieved state-of-the-art performance on the specific data-set we utilized. Moreover, analysis demonstrated that while most models do uncover similar patterns in the EEG signals, some variability could still be observed. Finally, a few prominent findings could only be validated using specific models. We conclude by suggesting remedies to the potential implications of this lack of robustness to model variability.
Spectral function and dilepton rate from a strongly magnetised hot and dense medium in the light of mean field models
Creators: name: Islam, Chowdhury Aminul
name: Bandyopadhyay, Aritra
name: Roy, Pradip K.
name: Sarkar, Sourav
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We have calculated the electromagnetic spectral function (SF) vis-à-vis the dilepton rate (DR) by evaluating the one-loop photon polarisation tensor for a strongly magnetised hot and dense medium. The calculation is performed in the ambit of mean field models namely Nambu\textendash Jona-Lasinio (NJL) and its Polyakov loop extended version (PNJL) in the lowest Landau level approximation. These models allow for a dynamical generation of quark mass which, evidently, gets affected in the presence of a magnetised medium. We have shown that the strength of the SF gets boosted because of the presence of dynamical quarks in lieu of the current quarks. It increases as we increase the magnetic field for a given value of temperature in both NJL and PNJL models. This increment is further reflected in the DR which is enhanced as compared to the Born rate for certain values of invariant masses. We also discuss the impact of chemical potential on DR within the present scenario.
description: 18 pages, 17 figures, title slightly changed, matches with the published version
Bounds on Dark Matter from the ``Atmospheric Neutrino Anomaly''
Creators: name: LoSecco, J. M.
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Bounds are derived on the cross section, flux and energy density of new particles that may be responsible for the atmospheric neutrino anomaly. $4.6 \times 10^{-45} cm^2 < σ<2.4 \times 10^{-34} cm^2$ Decay of primordial homogeneous dark matter can be excluded.
description: 10 pages, TeX (revtex)
Charmonium Production via Fragmentation at DESY HERA
Creators: name: Kniehl, Bernd A.
name: Kramer, Gustav
Publisher: name: arXiv
Year: 1997
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The cross section for the photoproduction of large-p_T J/psi mesons at HERA is calculated at next-to-leading order, adopting a perturbative approach to describe the fragmentation of charm quarks and gluons into J/psi mesons. We treat the charm quark according to the massless factorization scheme, where it is assumed to be one of the active flavours inside the proton and the resolved photon. We present inclusive distributions in transverse momentum and rapidity, including the contributions due to direct and resolved photons. The importance of the colour-octet components of the J/psi wave function, which contribute to the fragmentation process, is emphasized. In addition to prompt J/psi production, we consider also the production of chi_{cJ} states followed by radiative decays to J/psi mesons, both in the colour-singlet and colour-octet channels.
description: 32 pages (Latex), 12 figures (Postscript)
title: Survey Says: Strategies for Responding to Challenging Findings
Creators: name: Schattle, Erica
name: Meaney, Dorothy
Publisher: name: University of Massachusetts Amherst
Year: 2018
Subjects: subject: Administration, Management, and Leadership Assessment Teaching and Learning
subject: library impact
subject: user experience
subject: data collection
subject: Library and Information Science

description: As academic libraries are increasingly called on to demonstrate their value, librarians are beginning to define measures of library impact that work both within and across libraries and constituents. Initiatives such as ACRL's Assessment in Action program have sought to quantify library impact on student success through action research and campus collaboration. But what happens when data collected through an action research project tells you something you don't want to learn? This session will share one university library's experiences with shifting focus from measuring user satisfaction to assessing library impact through a biennial survey of students and faculty. Librarians collaborated with the campus office of institutional research to incorporate student exposure to library instruction and demographic information into the survey data. One finding from the 2016 iteration of the survey was particularly troubling: students who had experienced course-integrated library instruction did not differ in in usage and awareness of library collections and services. Presenters will share how this information was communicated to library and to campus constituents, and how the library responded to this finding. The experience of responding to difficult findings presented an opportunity for administrators to shape the culture of the organization in a healthy way. By celebrating and rewarding experimentation and deep commitment to learning about library users, staff remain encouraged to ask challenging questions about library impact and services. Attendees will take away strategies for identifying student data sources and approaching potential campus partners in order to collaborate on action research projects at their own institution. Attendees will also generate plans for responding to situations where data collection does not represent the library in a positive light.
description: As academic libraries are increasingly called on to demonstrate their value, librarians are defining measures of library impact that work both within and across libraries and constituents. But what happens when data collected through an action research project tells you something you don't want to learn?
Functional genetic evaluation of DNA house-cleaning enzymes in the malaria parasite: dUTPase and Ap4AH are essential in Plasmodium berghei but ITPase and NDH are dispensable
Creators: name: Hirdesh Kumar
name: Kehrer, Jessica
name: Singer, Mirko
name: Reinig, Miriam
name: Santos, Jorge M.
name: Mair, Gunnar R.
name: Frischknecht, Friedrich
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Pharmacology
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Background: Cellular metabolism generates reactive oxygen species. The oxidation and deamination of the deoxynucleoside triphosphate (dNTP) pool results in the formation of non-canonical, toxic dNTPs that can cause mutations, genome instability, and cell death. House-cleaning or sanitation enzymes that break down and detoxify non-canonical nucleotides play major protective roles in nucleotide metabolism and constitute key drug targets for cancer and various pathogens. We hypothesized that owing to their protective roles in nucleotide metabolism, these house-cleaning enzymes are key drug targets in the malaria parasite. Methods: Using the rodent malaria parasite Plasmodium berghei we evaluate here, by gene targeting, a group of conserved proteins with a putative function in the detoxification of non-canonical nucleotides as potential antimalarial drug targets: they are inosine triphosphate pyrophosphatase (ITPase), deoxyuridine triphosphate pyrophosphatase (dUTPase) and two NuDiX hydroxylases, the diadenosine tetraphosphate (Ap4A) hydrolase and the nucleoside triphosphate hydrolase (NDH). Results: While all four proteins are expressed constitutively across the intraerythrocytic developmental cycle, neither ITPase nor NDH are required for parasite viability. dutpase and ap4ah null mutants, on the other hand, are not viable suggesting an essential function for these proteins for the malaria parasite. Conclusions: Plasmodium dUTPase and Ap4A could be drug targets in the malaria parasite.
Integrability of anti-self-dual vacuum Einstein equations with nonzero cosmological constant: an infinite hierarchy of nonlocal conservation laws
Creators: name: Krasil'shchik, I.
name: Sergyeyev, A.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We present an infinite hierarchy of nonlocal conservation laws for the Przanowski equation, an integrable second-order PDE locally equivalent to anti-self-dual vacuum Einstein equations with nonzero cosmological constant. The hierarchy in question is constructed using a nonisospectral Lax pair for the equation under study. As a byproduct, we obtain an infinite-dimensional differential covering over the Przanowski equation.
description: 11 pages, no figures, expanded and revised version
Extracting m_c(M_c) and f_{D_s,B} from the pseudoscalar sum rules
Creators: name: Narison, Stephan
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: I report here on the (first) direct extraction of the running charm quark mass m_c(ν) from the D-meson sum rules, and on the implications of this result for the estimate of the leptonic decay constants f_{D_s}. The outputs: m_c(M_c)=(1.08\pm 0.11) GeV, f_{D}= (1.52\pm 0.16)f_π, f_{D_s}= (1.75\pm 0.18)f_πand f_B=(1.44\pm 0.07)f_πare in good agreement with the existing sum rule results obtained using the pole mass. In particular, the result f_D\approx f_B supports early '87 sum rule results \cite{SNFB}, which indicated a huge 1/m correction to the heavy quark symmetry expectation. This talk is based on the paper hep-ph/9712386 and updates the discussions given there.
description: Latex2e sources 5 pages including 2 PS figures and 1 Table. Talk given at the QCD 98 Euroconference-Montpellier (2-8th July1998)
Silica final lens performance in laser fusion facilities: HiPER and LIFE
Creators: name: Garoz, David
name: González-Arrabal, R.
name: Juárez, R.
name: Álvarez, J.
name: Sanz, J.
name: Perlado, J. M.
name: Rivera, A.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Nowadays, the projects LIFE (Laser Inertial Fusion Energy) in USA and HiPER (High Power Laser Energy Research) in Europe are the most advanced ones to demonstrate laser fusion energy viability. One of the main points of concern to properly achieve ignition is the performance of the final optics (lenses) under the severe irradiation conditions that take place in fusion facilities. In this paper, we calculate the radiation fluxes and doses as well as the radiation-induced temperature enhancement and colour centre formation in final lenses assuming realistic geometrical configurations for HiPER and LIFE. On these bases, the mechanical stresses generated by the established temperature gradients are evaluated showing that from a mechanical point of view lenses only fulfill specifications if ions resulting from the imploding target are mitigated. The absorption coefficient of the lenses is calculated during reactor startup and steady-state operation. The obtained results evidence the necessity of new solutions to tackle ignition problems during the startup process for HiPER. Finally, we evaluated the effect of temperature gradients on focal length changes and lens surface deformations. In summary, we discuss the capabilities and weak points of silica lenses and propose alternatives to overcome predictable problems.
Non-integrable Quantum Field Theories as Perturbations of Certain Integrable Models
Creators: name: Delfino, G.
name: Mussardo, G.
name: Simonetti, P.
Publisher: name: arXiv
Year: 1996
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We approach the study of non--integrable models of two--dimensional quantum field theory as perturbations of the integrable ones. By exploiting the knowledge of the exact $S$-matrix and Form Factors of the integrable field theories we obtain the first order corrections to the mass ratios, the vacuum energy density and the $S$-matrix of the non-integrable theories. As interesting applications of the formalism, we study the scaling region of the Ising model in an external magnetic field at $T \sim T_c$ and the scaling region around the minimal model $M_{2,7}$. For these models, a remarkable agreement is observed between the theoretical predictions and the data extracted by a numerical diagonalization of their Hamiltonian.
description: 60 pages, latex, 9 figures