cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Achievable Rates for Four-Dimensional Coded Modulation with a Bit-Wise Receiver
Creators: name: Alvarado, Alex
name: Agrell, Erik
Publisher: name: arXiv
Year: 2013
Subjects: subject: Information Theory (cs.IT)
subject: Optics (physics.optics)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: We study achievable rates for four-dimensional (4D) constellations for spectrally efficient optical systems based on a (suboptimal) bit-wise receiver. We show that PM-QPSK outperforms the best 4D constellation designed for uncoded transmission by approximately 1 dB. Numerical results using LDPC codes validate the analysis.
Spectroscopy at B-factories Using Hard Photon Emission
Creators: name: Benayoun, M.
name: Eidelman, S. I.
name: Ivanchenko, V. N.
name: Silagadze, Z. K.
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The process of hard photon emission by initial electrons (positrons) at B-factories is discussed. It is shown that studies of the bottomonium spectroscopy will be feasible for the planned integrated luminosity of the B-factory experiments.
description: 9 pages, Latex, 1 fugure, Submitted to Int.Jour.Mod.Phys. A
The étale-open topology and the stable fields conjecture
Creators: name: Johnson, Will
name: Tran, Chieu-Minh
name: Walsberg, Erik
name: Ye, Jinhe
Publisher: name: arXiv
Year: 2020
Subjects: subject: Logic (math.LO)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 03C60, 14G27, 12E30

description: For an arbitrary field $K$ and $K$-variety $V$, we introduce the étale-open topology on the set $V(K)$ of $K$-points of $V$. This topology agrees with the Zariski topology, Euclidean topology, or valuation topology when $K$ is separably closed, real closed, or $p$-adically closed, respectively. Topological properties of the étale-open topology corresponds to algebraic properties of $K$. For example, the étale-open topology on $\mathbb{A}^1(K)$ is not discrete if and only if $K$ is large. As an application, we show that a large stable field is separably closed.
description: Final version prior to publication
Additional file 2: of Impact of poly(A)-tail G-content on Arabidopsis PAB binding and their role in enhancing translational efficiency
Creators: name: Zhao, Taolan
name: Huan, Qing
name: Sun, Jing
name: Liu, Chunyan
name: Hou, Xiuli
name: Yu, Xiang
name: Silverman, Ian
name: Zhang, Yi
name: Gregory, Brian
name: Liu, Chun-Ming
name: Qian, Wenfeng
name: Cao, Xiaofeng
Publisher: name: figshare
Year: 2019
Subjects: subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Evolutionary Biology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Virology

description: Table S1. Progeny segregation from the self-cross of the mut (atpab2+/â atpab4 atpab8 plants). Table S2. Number of normal and aborted seeds in the mature mut siliques. Table S3. Number of embryos at different developmental stages in each Col silique. Table S4. Number of embryos at different developmental stages in each mut silique. Table S5. Summary of the CLIP-seq reads. Table S6. Summary of the poly(A)-seq reads. Table S7. Summary of reads of the mRNA stability assay. Table S8. Correlations between biological replicates. Table S9. Summary of the ribo-seq reads. Table S10. Summary of the mRNA-seq reads. Table S11. List of primer sequences. (PDF 474 kb)
Charged exctions in two-dimensional transition-metal dichalcogenides - semiclassical calculation of Berry-curvature effects
Creators: name: Hichri, A.
name: Jaziri, S.
name: Goerbig, M. O.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We theoretically study the role of the Berry curvature on neutral and charged excitons in two-dimensional transition-metal dichalcogenides. The Berry curvature arises due to a strong coupling between the conduction and valence bands in these materials that can to great extent be described within the model of massive Dirac fermions. The Berry curvature lifts the degeneracy of exciton states with opposite angular momentum. Using an electronic interaction that accounts for non-local screening effects, we find a Berry-curvature induced splitting of $\sim 17$ meV between the 2$p_{-}$ and 2$p_{+}$ exciton states in WS$_2$, consistent with experimental findings. Furthermore, we calculate the trion binding energies in WS$_2$ and WSe$_2$ for a large variety of screening lenghts and different dielectric constants for the environment. Our approach indicates the prominent role played by the Berry curvature along with non-local electronic interactions in the understanding of the energy spectra of neutral and charged excitons in transition-metal dichalcogenides and in the the interpretation of their optical properties.
description: 11 pages, 3 figures
On the Information Loss of the Max-Log Approximation in BICM Systems
Creators: name: Ivanov, Mikhail
name: Häger, Christian
name: Brännström, Fredrik
name: Amat, Alexandre Graell i
name: Alvarado, Alex
name: Agrell, Erik
Publisher: name: arXiv
Year: 2014
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: We present a comprehensive study of the information rate loss of the max-log approximation for $M$-ary pulse-amplitude modulation (PAM) in a bit-interleaved coded modulation (BICM) system. It is widely assumed that the calculation of L-values using the max-log approximation leads to an information loss. We prove that this assumption is correct for all $M$-PAM constellations and labelings with the exception of a symmetric 4-PAM constellation labeled with a Gray code. We also show that for max-log L-values, the BICM generalized mutual information (GMI), which is an achievable rate for a standard BICM decoder, is too pessimistic. In particular, it is proved that the so-called "harmonized" GMI, which can be seen as the sum of bit-level GMIs, is achievable without any modifications to the decoder. We then study how bit-level channel symmetrization and mixing affect the mutual information (MI) and the GMI for max-log L-values. Our results show that these operations, which are often used when analyzing BICM systems, preserve the GMI. However, this is not necessarily the case when the MI is considered. Necessary and sufficient conditions under which these operations preserve the MI are provided.
Solar meridional circulation from twenty-one years of SOHO/MDI and SDO/HMI observations: Helioseismic travel times and forward modeling in the ray approximation
Creators: name: Liang, Zhi-Chao
name: Gizon, Laurent
name: Birch, Aaron C.
name: Duvall, Thomas L.
name: Rajaguru, S. P.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The south-north travel-time differences are measured by applying time-distance helioseismology to the MDI and HMI medium-degree Dopplergrams covering May 1996-April 2017. Our data analysis corrects for several sources of systematic effects: P-angle error, surface magnetic field effects, and center-to-limb variations. An interpretation of the travel-time measurements is obtained using a forward-modeling approach in the ray approximation. The travel-time differences are similar in the southern hemisphere for cycles 23 and 24. However, they differ in the northern hemisphere between cycles 23 and 24. Except for cycle 24's northern hemisphere, the measurements favor a single-cell meridional circulation model where the poleward flows persist down to $\sim$0.8 $R_\odot$, accompanied by local inflows toward the activity belts in the near-surface layers. Cycle 24's northern hemisphere is anomalous: travel-time differences are significantly smaller when travel distances are greater than 20$^\circ$. This asymmetry between northern and southern hemispheres during cycle 24 was not present in previous measurements (e.g., Rajaguru & Antia 2015), which assumed a different P-angle error correction where south-north travel-time differences are shifted to zero at the equator for all travel distances. In our measurements, the travel-time differences at the equator are zero for travel distances less than $\sim$30$^\circ$, but they do not vanish for larger travel distances. This equatorial offset for large travel distances need not be interpreted as a deep cross-equator flow; it could be due to the presence of asymmetrical local flows at the surface near the end points of the acoustic ray paths.
description: accepted for publication in A&A
Comment about UV regularization of basic commutators in string theories
Creators: name: Kamenshchik, A. Yu.
name: Khalatnikov, I. M.
name: Martellini, M.
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Recently proposed by Hwang, Marnelius and Saltsidis zeta regularization of basic commutators in string theories is generalized to the string models with non-trivial vacuums. It is shown that implementation of this regularization implies the cancellation of dangerous terms in the commutators between Virasoro generators, which break Jacobi identity.
description: LaTeX, 9 pages, no figures, submitted to Physics Letters B
A Low-Complexity Detector for Memoryless Polarization-Multiplexed Fiber-Optical Channels
Creators: name: Häger, Christian
name: Beygi, Lotfollah
name: Agrell, Erik
name: Johannisson, Pontus
name: Karlsson, Magnus
name: Amat, Alexandre Graell i
Publisher: name: arXiv
Year: 2013
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: A low-complexity detector is introduced for polarization-multiplexed M-ary phase shift keying modulation in a fiber-optical channel impaired by nonlinear phase noise, generalizing a previous result by Lau and Kahn for single-polarization signals. The proposed detector uses phase compensation based on both received signal amplitudes in conjunction with simple straight-line rather than four-dimensional maximum-likelihood decision boundaries.
description: accepted for publication in IEEE Comm. Lett
Strongly Shortcut Spaces
Creators: name: Hoda, Nima
Publisher: name: arXiv
Year: 2020
Subjects: subject: Group Theory (math.GR)
subject: Metric Geometry (math.MG)
subject: FOS: Mathematics
subject: 20F65, 20F67, 51F30

description: We define the strong shortcut property for rough geodesic metric spaces, generalizing the notion of strongly shortcut graphs. We show that the strong shortcut property is a rough similarity invariant. We give several new characterizations of the strong shortcut property, including an asymptotic cone characterization. We use this characterization to prove that asymptotically CAT(0) spaces are strongly shortcut. We prove that if a group acts metrically properly and coboundedly on a strongly shortcut rough geodesic metric space then it has a strongly shortcut Cayley graph and so is a strongly shortcut group. Thus we show that CAT(0) groups are strongly shortcut.
 To prove these results, we use several intermediate results which we believe may be of independent interest, including what we call the Circle Tightening Lemma and the Fine Milnor-Schwarz Lemma. The Circle Tightening Lemma describes how one may obtain a quasi-isometric embedding of a circle by performing surgery on a rough Lipschitz map from a circle that sends antipodal pairs of points far enough apart. The Fine Milnor-Schwarz Lemma is a refinement of the Milnor-Schwarz Lemma that gives finer control on the multiplicative constant of the quasi-isometry from a group to a space it acts on.
description: 35 pages, 6 figures
Rapamycin ameliorates chronic intermittent hypoxia and sleep deprivation-induced renal damage via the mammalian target of rapamycin (mTOR)/NOD-like receptor protein 3 (NLRP3) signaling pathway
Creators: name: Liu, Wei
name: Zhao, Dong
name: Wu, Xiaofeng
name: Yue, Fang
name: Yang, Haizhen
name: Hu, Ke
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Marine Biology
subject: Cancer
subject: Mental Health

description: Rapamycin inhibits the activation of NOD-like receptor protein 3 (NLRP3) by regulating the mammalian target of rapamycin (mTOR) to treat obstructive sleep apnea-related renal injury. Sleep deprivation (SD) and chronic intermittent hypoxia (CIH) mouse models were used to assess the effects of autophagy in vivo. Compared with the control, SD, and CIH groups, the SD+CIH group had lower body weight and higher levels of blood urea nitrogen (BUN), creatinine, and urinary albumin (U-Alb) (P < 0.05); renal injury and oxidative damage occurred in the SD+CIH group, the kidney cell nucleus ruptured, and morphological structure of the cells was unclear in the SD+CIH group. The SD+CIH group demonstrated increased apoptosis compared with the control, SD, and CIH groups using Western blot analysis. Compared to the control, SD, and CIH groups, the SD+CIH group showed a higher degree of microtubule-associated protein light chain 3\ staining. Compared to the SD+CIH group, BUN, creatinine, and U-Alb levels decreased, and apoptosis increased in the SD+CIH+rapamycin group, and the structure of the kidney after rapamycin treatment was well preserved. The mTOR expression was increased in the kidneys of the SD+CIH group. The NLRP3, Gasdermin D (GMDSD), interleukin (IL)-18, IL-1β, and cleaved-caspase-1 protein levels were higher in the SD+CIH group than the SD+CIH+rapamycin group, and the NLRP3, GMDSD, IL-18, IL-1β, and cleaved-caspase-1 mRNA levels were higher in the SD+CIH group than the SD+CIH+rapamycin group. Following rapamycin treatment, pyroptosis was suppressed. Rapamycin ameliorates renal damage by inhibiting the mTOR/NLRP3 signaling pathway.
Συγκριτική Μελέτη του ΗΤΑ στην Ελλάδα με τις Σκανδιναβικές Χώρες
Creators: name: Μελά, Μαρία Αναστασία Αθανασίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2025
Subjects: Αξιολόγηση Τεχνολογιών Υγείας
Ελλάδα
Σκανδιναβικές Χώρες
Health Technology Assessment
Greece
Nordic Countries

description: Η παρούσα διπλωματική διατριβή πραγματεύεται την συγκριτική μελέτη του οργανισμού Αξιολόγησης Τεχνολογιών Υγείας (Health Technology Assessment - HTA) στην Ελλάδα, σε σχέση με τις Σκανδιναβικές χώρες, όπως η Σουηδία, η Δανία και η Νορβηγία. Στη μελέτη αυτή αναλύεται η διαδικασία και οι θεμελιώδεις αρχές που διέπουν τον ΗΤΑ, με κύριο στόχο την αξιολόγηση της αποτελεσματικότητας, του κόστους και των κοινωνικών επιπτώσεων νέων αλλά και ήδη υπάρχοντών τεχνολογιών υγείας, προτού αυτές εφαρμοστούν στο σύστημα υγειονομικής περίθαλψης. Στην Ελλάδα, ο ΗΤΑ εισήχθη επισήμως το 2018 μέσω της ίδρυσης επιτροπής για την αξιολόγηση φαρμάκων. Αντιθέτως, οι Σκανδιναβικές χώρες ενσωμάτωσαν τον ΗΤΑ σε πολύ νωρίτερα στάδια, γεγονός που έχει οδηγήσει στην ανάπτυξη πιο εξελιγμένων και οργανωμένων συστημάτων HTA, με ισχυρή κρατική υποστήριξη και πιο εξειδικευμένες μεθόδους αξιολόγησης. Η παρούσα εργασία συγκρίνει τις δομές και διαδικασίες του HTA στις εν λόγω χώρες, αναδεικνύοντας τις διαφορές και τις ομοιότητες, και προτείνει στρατηγικές βελτίωσης του ελληνικού συστήματος HTA, με έμφαση στην ενίσχυση της διαφάνειας και της ενεργούς συμμετοχής όλων των ενδιαφερομένων μερών στη διαδικασία λήψης αποφάσεων.
description: This master’s thesis project presents a comparative analysis of Health Technology Assessment (HTA) in Greece to the Nordic countries, specifically Sweden, Denmark, and Norway. It provides a detailed examination of the HTA process and its fundamental principles underpinning it, with the primary objective of evaluating the clinical effectiveness, cost-effectiveness, and societal impact of both new and existing health technologies before their implementation within healthcare systems. In Greece, the formal introduction of HTA occurred in 2018, with the establishment of a dedicated committee for the evaluation of pharmaceuticals. In contrast, the Nordic countries integrated HTA much earlier, resulting in the development of more advanced and structured HTA systems, characterized by robust governmental support and more refined evaluation methodologies. This thesis compares the HTA frameworks and processes in these countries, elucidating the key differences and similarities, and offers recommendations for enhancing the Greek HTA system. Specifically, it advocates for the strengthening of transparency and the active engagement of all relevant stakeholders in the decision-making process.
description: Συνεργαζόμενo Τμήμα: Κοινωνικής Διοίκησης και Πολιτικής Επιστήμης (Δημοκρίτειο Πανεπιστήμιο Θράκης)
Single leptoquark production associated with hard photon emission in ep collisions at high energies
Creators: name: Ilyin, V. A.
name: Pukhov, A. E.
name: Savrin, V. I.
name: Semenov, A. V.
name: von Schlippe, W. B.
Publisher: name: arXiv
Year: 1995
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this paper we consider single leptoquark resonance production associated with the emission of a hard photon. We have obtained analytical formulae for differential and total cross sections for the cases of scalar and vector leptoquarks. We have found that in reactions with scalar leptoquarks there is no photon radiation in some directions depending on the leptoquark electric charge (the radiative amplitude zero - the RAZ effect). For vector leptoquarks the exact RAZ is present only in the case of Yang-Mills coupling. We propose to use the RAZ effect to determine the types of leptoquarks. We conclude also that this effect opens a possibility to measure the leptoquark anomalous magnetic moment.
description: 11 pages, one figure is prepared in 'eps' format and stored in the file 'raz_cms.uu' compressed and uuencoded by standard script 'uufiles'
TBI Contusion Segmentation from MRI using Convolutional Neural Networks
Creators: name: Roy, Snehashis
name: Butman, John A.
name: Chan, Leighton
name: Pham, Dzung L.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Traumatic brain injury (TBI) is caused by a sudden trauma to the head that may result in hematomas and contusions and can lead to stroke or chronic disability. An accurate quantification of the lesion volumes and their locations is essential to understand the pathophysiology of TBI and its progression. In this paper, we propose a fully convolutional neural network (CNN) model to segment contusions and lesions from brain magnetic resonance (MR) images of patients with TBI. The CNN architecture proposed here was based on a state of the art CNN architecture from Google, called Inception. Using a 3-layer Inception network, lesions are segmented from multi-contrast MR images. When compared with two recent TBI lesion segmentation methods, one based on CNN (called DeepMedic) and another based on random forests, the proposed algorithm showed improved segmentation accuracy on images of 18 patients with mild to severe TBI. Using a leave-one-out cross validation, the proposed model achieved a median Dice of 0.75, which was significantly better (p<0.01) than the two competing methods.
description: https://ieeexplore.ieee.org/abstract/document/8363545/, IEEE 15th International Symposium on Biomedical Imaging (ISBI 2018)
Isospin Breaking in the Extraction of Isovector and Isoscalar Spectral Functions from e^+e^- --> hadrons
Creators: name: Maltman, K.
name: Wolfe, C. E.
Publisher: name: arXiv
Year: 2000
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A finite energy sum rule (FESR) analysis of the isospin-breaking vector current correlator <0|T(V^3_μV^8_ν)|0> is used to determine the isospin-breaking electromagnetic (EM) decay constants of the low-lying vector mesons. These results are used to evaluate the corrections required to extract the flavor diagonal 33 and 88 resonance contributions from the full resonance EM contributions to the EM spectral function. A large (~15%) correction is found in the case of the omega contribution to the isoscalar spectral function. The implications of these results for sum rules based on the isovector-isoscalar spectral difference are considered.
description: Presentation to the 3rd International Conference on Symmetries in Subatomic Physics, Adelaide, Mar. 13-17, 2000
Detecting Water In the atmosphere of HR 8799 c with L-band High Dispersion Spectroscopy Aided By Adaptive Optics
Creators: name: Wang, Ji
name: Mawet, Dimitri
name: Fortney, Jonathan J.
name: Hood, Callie
name: Morley, Caroline V.
name: Benneke, Bjorn
Publisher: name: arXiv
Year: 2018
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: High dispersion spectroscopy of brown dwarfs and exoplanets enables exciting science cases, e.g., mapping surface inhomogeneity and measuring spin rate. Here, we present $L$ band observations of HR 8799 c using Keck NIRSPEC (R=15,000) in adaptive optics (AO) mode (NIRSPAO). We search for molecular species (H$_2$O and CH$_4$) in the atmosphere of HR 8799 c with a template matching method, which involves cross correlation between reduced spectrum and a template spectrum. We detect H$_2$O but not CH$_4$, which suggests disequilibrium chemistry in the atmosphere of HR 8799 c, and this is consistent with previous findings. We conduct planet signal injection simulations to estimate the sensitivity of our AO-aided high dispersion spectroscopy observations. We conclude that $10^{-4}$ contrast can be reached in $L$ band. The sensitivity is mainly limited by the accuracy of line list used in modeling spectra and detector noise. The latter will be alleviated by the NIRSPEC upgrade.
description: 14 pages, 5 figures, 5 tables, accepted for publication on AJ, references updated
Wave equation on general noncompact symmetric spaces
Creators: name: Anker, Jean-Philippe
name: Zhang, Hong-Wei
Publisher: name: arXiv
Year: 2020
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 22E30, 35L05, 43A85, 43A90

description: We establish sharp pointwise kernel estimates and dispersive properties for the wave equation on noncompact symmetric spaces of general rank. This is achieved by combining the stationary phase method and the Hadamard parametrix, and in particular, by introducing a subtle spectral decomposition, which allows us to overcome a well-known difficulty in higher rank analysis, namely the fact that the Plancherel density is not a differential symbol in general. As consequences, we deduce the Strichartz inequality for a large family of admissible pairs and prove global well-posedness results for the corresponding semilinear equation with low regularity data as on hyperbolic spaces.
Violating Bell's inequality with remotely-connected superconducting qubits
Creators: name: Zhong, Y. P.
name: Chang, H. -S.
name: Satzinger, K. J.
name: Chou, M. -H.
name: Bienfait, A.
name: Conner, C. R.
name: Dumur, É.
name: Grebel, J.
name: Peairs, G. A.
name: Povey, R. G.
name: Schuster, D. I.
name: Cleland, A. N.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum communication relies on the efficient generation of entanglement between remote quantum nodes, due to entanglement's key role in achieving and verifying secure communications. Remote entanglement has been realized using a number of different probabilistic schemes, but deterministic remote entanglement has only recently been demonstrated, using a variety of superconducting circuit approaches. However, the deterministic violation of a Bell inequality, a strong measure of quantum correlation, has not to date been demonstrated in a superconducting quantum communication architecture, in part because achieving sufficiently strong correlation requires fast and accurate control of the emission and capture of the entangling photons. Here we present a simple and robust architecture for achieving this benchmark result in a superconducting system.
Hadronic Atoms in QCD
Creators: name: Gasser, J.
name: Lyubovitskij, V. E.
name: Rusetsky, A.
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We propose a non relativistic effective Lagrangian approach to study hadronic atom observables in the framework of QCD (including photons). We apply our formalism to derive a general expression for the width of the pi+pi- atom decaying into two neutral pions. It contains all terms at leading and next-to-leading order in isospin breaking. The result allows one to evaluate the combination a0-a2 of pi-pi S-wave scattering lengths from pi+pi- atom lifetime measurements, like the one presently performed by the DIRAC expeiment at CERN.
description: 5 pages. Talk given at ``8th International Symposium on Meson-Nucleon Physics and the Structure of the Nucleon (MENU99)'', Zuoz, Switzerland, August 16-20, 1999
Personas refugiadas que han dejado huella.pdf
Creators: name: Sanz Calderón, Candela
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 390304
subject: Primary education

description: Una serie de actividades para trabajar la importancia de os refugiados en la asignatura de 6º de primaria de educación en valores éticos y cívicos
MOESM1 of Efficient simultaneous production of extracellular polyol esters of fatty acids and intracellular lipids from inulin by a deep-sea yeast Rhodotorula paludigena P4R5
Creators: name: Wang, Mengqi
name: Mao, Weian
name: Wang, Xiaoxiang
name: Li, Fengyi
name: Wang, Jiming
name: Chi, Zhe
name: Chi, Zhenming
name: Liu, Guanglei
Publisher: name: figshare
Year: 2019
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Biotechnology
subject: Evolutionary Biology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: Additional file 1: Table S1. The morphological and physiological characteristics, accession numbers of D1/D2 26S rDNA sequences, identified species, the biomass, intracellular lipids content and PEFA production in the PEFA screening medium of the 19 strains isolated from deep-sea.
SciLake Deliverable D2.1: Initial version of the Scientific Lake service
Creators: name: Yakovets, Nikolay
name: Wu, Yuanjin
name: de Graaf, Daan
Publisher: name: Zenodo
Year: 2024

description: This deliverable report provides an overview of the developments within Work Package 2(WP2) of the SciLake project, detailing the progress on the initial version of the Scientific Lakeservice. The service aims to streamline knowledge acquisition, knowledge graph creation, andScientific Lake navigation thus facilitating access to a vast and diverse array of scientificdatasets. By aggregating and indexing large-scale datasets into a collection of ScientificKnowledge Graphs (SKGs) and providing efficient ways to access and reason over this data,the service enhances the discoverability and usability of research data and provides a robustdata management foundation for downstream value-added services developed in other workpackages of this project (WP3 and WP4).
description: The deliverable has been officially approved by the Project Officer. This project has received funding from the European Union's Horizon Europe framework programme under grant agreement No. 101058573. Views and opinions expressed are however those of the author(s) only and do not necessarily reflect those of the European Union or the European Research Executive Agency. Neither the European Union nor the European Research Executive Agency can be held responsible for them.
Surprises in the t-J model: Implications for cuprates
Creators: name: Mallik, Aabhaas Vineet
name: Gupta, Gaurav Kumar
name: Shenoy, Vijay B.
name: Krishnamurthy, H. R.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The t-J model is a paradigmatic model for the study of strongly correlated electron systems. In particular, it has been argued that it is an appropriate model to describe the cuprate high-Tc superconductors. It turns out that a comprehensive understanding of the gamut of physics encoded by the t-J model is still an open problem. In recent years some remarkable experiments on the cuprates, for example, discovery of nodeless superconductivity in underdoped samples (PNAS 109, 18332 (2012)), discovery of s-wave like gap in the pseudogap phase (Phys. Rev. Lett. 111, 107001 (2013)), and observation of polar Kerr effect (PKE) (Phys. Rev. Lett. 112, 047003 (2014)), have thrown up new challenges for this model. Here, we present results demonstrating that, within the slave-particle formulation of the t-J model, the d-wave superconductor is unstable at low doping to its own anti-symmetric phase mode fluctuations when the effect of fluctuations is treated self-consistently. We then show that this instability gives way to a time reversal symmetry broken d + is-SC in the underdoped region which has superfluid stiffness consistent with Uemura relation, even with a large pair amplitude. We show that our results are consistent with existing experiments on cuprates and suggest that Josephson (SQUID interferometry) experiments can clearly distinguish the d+is-SC from a host of other possibilities alluded to be contributing to the physics of underdoped cuprates. We also comment on other theoretical studies vis-a-vis ours.
description: 8 pages, 2 figures
SciLake Deliverable D2.1: Initial version of the Scientific Lake service
Creators: name: Yakovets, Nikolay
name: Wu, Yuanjin
name: de Graaf, Daan
Publisher: name: Zenodo
Year: 2024

description: This deliverable report provides an overview of the developments within Work Package 2(WP2) of the SciLake project, detailing the progress on the initial version of the Scientific Lakeservice. The service aims to streamline knowledge acquisition, knowledge graph creation, andScientific Lake navigation thus facilitating access to a vast and diverse array of scientificdatasets. By aggregating and indexing large-scale datasets into a collection of ScientificKnowledge Graphs (SKGs) and providing efficient ways to access and reason over this data,the service enhances the discoverability and usability of research data and provides a robustdata management foundation for downstream value-added services developed in other workpackages of this project (WP3 and WP4).
description: The deliverable awaits official approval by the Project Officer. This project has received funding from the European Union's Horizon Europe framework programme under grant agreement No. 101058573. Views and opinions expressed are however those of the author(s) only and do not necessarily reflect those of the European Union or the European Research Executive Agency. Neither the European Union nor the European Research Executive Agency can be held responsible for them.
Four-Dimensional Coded Modulation with Bit-wise Decoders for Future Optical Communications
Creators: name: Alvarado, Alex
name: Agrell, Erik
Publisher: name: arXiv
Year: 2014
Subjects: subject: Information Theory (cs.IT)
subject: Optics (physics.optics)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Coded modulation (CM) is the combination of forward error correction (FEC) and multilevel constellations. Coherent optical communication systems result in a four-dimensional (4D) signal space, which naturally leads to 4D-CM transceivers. A practically attractive design paradigm is to use a bit-wise decoder, where the detection process is (suboptimally) separated into two steps: soft-decision demapping followed by binary decoding. In this paper, bit-wise decoders are studied from an information-theoretic viewpoint. 4D constellations with up to 4096 constellation points are considered. Metrics to predict the post-FEC bit-error rate (BER) of bit-wise decoders are analyzed. The mutual information is shown to fail at predicting the post-FEC BER of bit-wise decoders and the so-called generalized mutual information is shown to be a much more robust metric. For the suboptimal scheme under consideration, it is also shown that constellations that transmit and receive information in each polarization and quadrature independently (e.g., PM-QPSK, PM-16QAM, and PM-64QAM) outperform the best 4D constellations designed for uncoded transmission. Theoretical gains are as high as 4 dB, which are then validated via numerical simulations of low-density parity check codes.
description: This is an updated and expanded version of arXiv:1310.4149
NLTE analysis of copper lines in different stellar populations
Creators: name: Shi, J. R.
name: Yan, H. L.
name: Zhou, Z. M.
name: Zhao, G.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The copper abundances of 29 metal-poor stars are determined based on the high resolution, high signal-to-noise ratio spectra from the UVES spectragraph at the ESO VLT telescope. Our sample consists of the stars of the Galactic halo, thick- and thin-disk with [Fe/H] ranging from ~ -3.2 to ~ 0.0 dex. The non-local thermodynamic equilibrium (NLTE) effects of Cu I lines are investigated, and line formation calculations are presented for an atomic model of copper including 97 terms and 1089 line transitions. We adopted the recently calculated photo-ionization cross-sections of Cu I, and investigated the hydrogen collision by comparing the theoretical and observed line profiles of our sample stars. The copper abundances are derived for both local thermodynamic equilibrium (LTE) and NLTE based on the spectrum synthesis methods. Our results show that the NLTE effects for Cu I lines are important for metal-poor stars, in particular for very metal-poor stars, and these effects depend on the metallicity. For very metal-poor stars, the NLTE abundance correction reaches as large as ~ +0.5 dex compared to standard LTE calculations. Our results indicate that [Cu/Fe] is under-abundant for metal-poor stars (~ -0.5 dex) when the NLTE effects are included.
On the Effective Spatial Separations in the Clustering of Faint Galaxies
Creators: name: Roukema, Boudewijn F.
name: Valls-Gabaud, David
Publisher: name: arXiv
Year: 1997
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Several recent measurements have been made of the angular correlation function $w(θ,m)$ of faint galaxies in deep surveys (e.g., Hubble Deep Field, HDF). Are the measured correlations indicative of gravitational growth of primordial perturbations or of the relationship between galaxies and (dark matter dominated) galaxy haloes? A first step in answering this question is to determine the typical spatial separations of galaxies whose spatial correlations, $ξ(r,z),$ contribute most to w. The median spatial separation of galaxy pairs contributing to a fraction $p$ of $w$ for a galaxy survey is denoted by r_{eff} and compared with the perpendicular distance, $r_\perp,$ at the median redshift, z_{median}, of the galaxies. Over a wide range in $ξ$ growth rates $ε$ and in $z_{median}, \r_eff(50%) \ltsim r_\perp$ and $\r_eff(90%) \sim 4 r_\perp.$ Values of r_eff for typical redshift distributions indicate that many $w$ measurements correspond to spatial correlations at comoving length scales well below 1 h^-1 Mpc. For $Ω_0=1$ and $λ_0=0$, the correlation signal at 4\arcsec predominant in the Villumsen et al. (1996) estimates of $w$ for faint HDF galaxies corresponds to r_eff(50%)(HDF) \approx 40 h^-1 kpc; other cosmologies and angles up to 10\arcsec can increase this to r_eff(50%)(HDF) $\ltsim 200 h^-1 kpc. The proper separations are (1+z) times smaller. These scales are small: the faint galaxy $w$ measurements are at scales where halo and/or galaxy existence, let alone interactions, may modify the spatial correlation function. These measurements could maybe be used to probe the radial extent of haloes at high redshift.
description: 10 pages, 4 figures, \LaTeX files using aas2pp4.sty or aasms4.sty, accepted for publication in The Astrophysical Journal
Complex diffusion-based kinetics of photoluminescence in semiconductor nanoplatelets
Creators: name: Kurilovich, Aleksandr A.
name: Mantsevich, Vladimir N.
name: Stevenson, Keith J.
name: Chechkin, Aleksei V.
name: Palyulin, Vladimir V.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We present a diffusion-based simulation and theoretical models for explanation of photoluminescence (PL) emission intensity in semiconductor nanoplatelets. It is shown that the shape of PL intensity curves can be reproduced by the interplay of recombination, diffusion and trapping of excitons. The emission intensity at short times is purely exponential and is defined by recombination. At long times it is governed by the release of excitons from surface traps and is characterized by a power-law tail. We show that the crossover from one limit to another is controlled by diffusion properties. This intermediate region exhibits a rich behaviour depending on the value of diffusivity. Proposed approach reproduces all the features of experimental curves measured for different nanoplatelet systems.
description: 11 pages, 10 figures
Supersymmetry, Finite Temperature and Gravitino Production in the Early Universe
Creators: name: Leigh, Robert G.
name: Rattazzi, Riccardo
Publisher: name: arXiv
Year: 1995
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We reconsider post-inflation gravitino production, in the context of hidden sector supergravity models. We discuss the possible role of supersymmetry breaking from finite temperature effects in enhancing the rate for gravitino production and argue that there is no such enhancement. Our conclusion is based on a simple decoupling argument, which is independent of temperature. We also characterize the properties of goldstino-like hydrodynamic fluctuations that arise in supersymmetric models at finite temperature. We show that they cannot lead to enhanced gravitino emission via infrared divergences. We comment on an analogy with axion emission from hadronic matter.
description: 15 pages, harvmac
Low Energy Constants from High Energy Theorems
Creators: name: Beane, Silas R.
Publisher: name: arXiv
Year: 1999
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: New constraints on resonance saturation in chiral perturbation theory are investigated. These constraints arise because each consistent saturation scheme must map to a representation of the full QCD chiral symmetry group. The low-energy constants of chiral perturbation theory are then related by a set of mixing angles. It is shown that vector meson dominance is a consequence of the fact that nature has chosen the lowest-dimensional nontrivial chiral representation. It is further shown that chiral symmetry places an upper bound on the mass of the lightest scalar in the hadron spectrum.
description: 11 pages TeX and mtexsis.tex
Relaxion and light (pseudo)scalars at the HL-LHC and lepton colliders
Creators: name: Frugiuele, Claudia
name: Fuchs, Elina
name: Perez, Gilad
name: Schlaffer, Matthias
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the potential of future lepton colliders, running at the Z-pole and above, and the High-Luminosity LHC to search for the relaxion and other light scalars $ϕ$. We investigate the interplay of direct searches and precision observables for both CP-even and -odd couplings. In particular, precision measurements of exotic Z-decays, Higgs couplings, the exotic Higgs decay into a relaxion pair and associated $Zϕ$ and $γϕ$ production are promising channels to yield strong bounds.
description: 27 pages + references, 5 figures, 2 tables
Nonlinear vector susy for the three-dimensional topological massive Yang-Mills theory
Creators: name: Sasaki, C. A. G.
name: Sasaki, D. G. G.
name: Sorella, S. P.
Publisher: name: arXiv
Year: 1998
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A nonlinear vector supersymmetry for three-dimensional topological massive Yang-Mills is obtained by making use of a nonlinear but local and covariant redefinition of the gauge field.
description: 8 pages, LateX2e
Studying and comparing the geological maps of different scales
Creators: name: Lemenkova, Polina
Publisher: name: figshare
Year: 2018
Subjects: subject: 90901 Cartography
subject: FOS: Environmental engineering

description: Student Practical Report Nr.2 for the Course 'Environment Maps'. Bachelor's (BSc) studies at Lomonosov Moscow State University
Non-Lorentzian Field Theories with Maximal Supersymmetry and Moduli Space Dynamics
Creators: name: Lambert, Neil
name: Owen, Miles
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present gauge theories in 2+1 and 4+1 dimensions with 16 supersymmetries which are invariant under rotations and translations but not boosts. The on-shell conditions reduce the dynamics to motion on a moduli space of BPS states graded by a topologically conserved quantity. On each component of the moduli space only half the supersymmetry is realised. We argue that these theories describe M2-branes and M5-branes which have been infinitely boosted so that their worldvolume `time' has become null.
description: Minor corrections including an extra term in the susy variation of G_{ij}
Nanograined half-Heusler semiconductors as advanced thermoelectrics: an ab-initio high-throughput statistical study
Creators: name: Carrete, Jesús
name: Mingo, Natalio
name: Wang, Shidong
name: Curtarolo, Stefano
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Nanostructuring has spurred a revival in the field of direct thermoelectric energy conversion. Nanograined materials can now be synthesized with higher figures of merit (ZT) than the bulk counterparts. This leads to increased conversion efficiencies. Despite considerable effort in optimizing the known and discovering the unknown, technology still relies upon a few limited solutions. Here we perform ab-initio modeling of ZT for 75 nanograined compounds obtained by filtering down the 79,057 half-Heusler entries available in the AFLOWLIB.org repository according to electronic and thermodynamic criteria. For many of the compounds the $ZT$s are markedly above those attainable with nanograined IV and III-V semiconductors. About 15% of them may even outperform ZT~2 at high temperatures. Our analysis elucidates the origin of the advantageous thermoelectric properties found within this broad material class. We use machine learning techniques to unveil simple rules determining if a nanograined half-Heusler compound is likely to be a good thermoelectric given its chemical composition.
Algebraic derivation of the Energy Eigenvalues for the quantum oscillator defined on the Sphere and the Hyperbolic plane
Creators: name: Srivastava, Atulit
name: Soni, Sanjeev Kant
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We give an algebraic derivation of the eigenvalues of energy of a quantum harmonic oscillator on the surface of constant curvature, i.e. on the sphere or on the hyperbolic plane. We use the method proposed by Daskaloyannis for fixing the energy eigenvalues of two-dimensional (2D) quadratically superintegrable systems by assuming that they are determined by the existence of finite-dimensional representation of the polynomial algebra of the motion integral operators. The tool for realizing representations is the deformed parafermionic oscillator. The eigenvalues of energy are calculated and the result derived by us algebraically agrees with the known energy eigenvalues calculated by classical analytical methods. This assertion which is the main result of this article is demonstrated by a detailed presentation. We also discuss the qualitative difference of the energy spectra on the sphere and on the hyperbolic plane.
Influence of Behavioral Models on Multiuser Channel Capacity
Creators: name: Agrell, Erik
name: Karlsson, Magnus
Publisher: name: arXiv
Year: 2015
Subjects: subject: Information Theory (cs.IT)
subject: Optics (physics.optics)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: In order to characterize the channel capacity of a wavelength channel in a wavelength-division multiplexed (WDM) system, statistical models are needed for the transmitted signals on the other wavelengths. For example, one could assume that the transmitters for all wavelengths are configured independently of each other, that they use the same signal power, or that they use the same modulation format. In this paper, it is shown that these so-called behavioral models have a profound impact on the single-wavelength achievable information rate. This is demonstrated by establishing, for the first time, upper and lower bounds on the maximum achievable rate under various behavioral models, for a rudimentary WDM channel model.
MOESM1 of Wnt canonical pathway activator TWS119 drives microglial anti-inflammatory activation and facilitates neurological recovery following experimental stroke
Creators: name: Song, Degang
name: Zhang, Xiangjian
name: Chen, Junmin
name: Liu, Xiaoxia
name: Xue, Jing
name: Zhang, Lan
name: Lan, Xifa
Publisher: name: figshare
Year: 2019
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Mental Health

description: Additional file 1. Supplementary result. TWS119 with the dose of 10 mg/kg was selected in animal experiment. TWS119 activated Wnt/β-catenin pathway by inhibiting GSK-3β. TWS119 improved histological damage in the late stage of stroke. Figure S1 TWS119 at the dose of 10 mg/kg was selected in animal experiment. a TWS119 with the dose of 5 mg/kg and TWS119 with the dose of 10 mg/kg upregulated the mRNA expression of β-catenin (n = 8 per group, * P < 0.05, ** P < 0.01). b Neurological functions were evaluated using Adhesive Removal test at day1, 7 and 14 after stroke. TWS119 with the dose of 10 mg/kg significantly improved neurological function at day 14 after stroke (n = 8 per group, TWS119 (10 mg/kg) vs Vehicle, # P < 0.01). Figure S2 TWS119 activated Wnt/β-catenin pathway by inhibiting GSK-3β and improved histological damage. a Western blot was used to determine the expression of β-catenin and GSK-3β 14 days after stroke. b and c TWS119-treated mice had a lower level of GSK-3β and a higher level β-catenin comparing to vehicle mice (n = 6 per group, * P < 0.05, ** P < 0.01). d Histological damage was assessed by quantification of the infarcted cortex cavitation using CWI. e TWS119 treatment increased the CWI in ischemic mice comparing to vehicle treatment 21 days after stroke (n = 8 per group, * P < 0.05). CWI, Cortical width index. CWI = 100% × W.lpsi / W.contra, W.lpsi means ipsilateral width, W.contra means contralateral width.