cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Measurement of the angular momentum of a rotating Bose-Einstein condensate
Creators: name: Chevy, F.
name: Madison, K.
name: Dalibard, J.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the quadrupole oscillation of a Bose-Einstein condensate of $^{87}$Rb atoms confined in an axisymmetric magnetic trap, after it has been stirred by an auxiliary laser beam. The stirring may lead to the nucleation of one or more vortices, whose presence is revealed unambiguously by the precession of the axes of the quadrupolar mode. For a stirring frequency $Ω$ below the single vortex nucleation threshold $Ω_c$, no measurable precession occurs. Just above $Ω_c$, the angular momentum deduced from the precession is $\sim \hbar$. For stirring frequencies above $Ω_c$ the angular momentum is a smooth and increasing function of $Ω$, until an angular frequency $Ω_c'$ is reached at which the vortex lattice disappears and the precession stops.
description: 4 pages, 3 figures
Multidimensional political polarization in online social networks
Creators: name: Peralta, Antonio F.
name: Ramaciotti, Pedro
name: Kertész, János
name: Iñiguez, Gerardo
Publisher: name: arXiv
Year: 2023
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: Political polarization in online social platforms is a rapidly growing phenomenon worldwide. Despite their relevance to modern-day politics, the structure and dynamics of polarized states in digital spaces are still poorly understood. We analyze the community structure of a two-layer, interconnected network of French Twitter users, where one layer contains members of Parliament and the other one regular users. We obtain an optimal representation of the network in a four-dimensional political opinion space by combining network embedding methods and political survey data. We find structurally cohesive groups sharing common political attitudes and relate them to the political party landscape in France. The distribution of opinions of professional politicians is narrower than that of regular users, indicating the presence of more extreme attitudes in the general population. We find that politically extreme communities interact less with other groups as compared to more centrist groups. We apply an empirically tested social influence model to the two-layer network to pinpoint interaction mechanisms that can describe the political polarization seen in data, particularly for centrist groups. Our results shed light on the social behaviors that drive digital platforms towards polarization, and uncover an informative multidimensional space to assess political attitudes online.
Odontobuthus doriae
Creators: name: Navidpour, Shahrokh
name: Fet, Victor
name: Kovařík, František
name: Soleglad, Michael E.
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Scorpiones
Buthidae
Odontobuthus
Odontobuthus doriae

description: Odontobuthus doriae (Thorell, 1876)
(Figs. 11 and 25)
 Buthus doriae Thorell, 1876: 107; Kraepelin, 1891: 57– 58, pl. I, fig. 6, 10; Kraepelin, 1899: 27.
 Odontobuthus doriae: Pringle, 1960: 83; Khalaf, 1963: 66; Vachon, 1966: 213; Habibi, 1971: 44; Pérez Minocci, 1974: 28; Farzanpay, 1988: 39; Kovařík, 1997a: 47; Kovařík, 1998: 115; Fet & Lowe, 2000: 187; Kovařík, 2002: 9; Lourenço & Pézier, 2002: 116; Vignoli et al., 2003: 4; Pirali-Kheirabadi et al., 2009: 9, figs. 10, 24–27; Navidpour et al., 2011: 13, figs. 5, 8, 13, 21–24; Karataş et al., 2012: 116.
TYPE LOCALITY AND TYPE REPOSITORY. Iran, Teheran; MCSN.
 FARS PROVINCE MATERIAL EXAMINED. Iran, Fars Province, Abadeh, 31°10'53"N 52°28'39"E, 2169 m a.s.l. (Locality No. Fa-856), X.2008, 2♂ 2♀ (RRLS), 1♂ (FKCP), leg. Habibzadeh, Hayader & Masihipour; Juym-Lar, Banaruyeh, 29°05'39"N 54°06'16"E, 864 m a.s.l. (Locality No. Fa-878), X.2008, 1♂ 2♀ juvs. (RRLS), leg. Habibzadeh, Hayader & Masihipour.
DISTRIBUTION: Iran, Esfahan, Fars, Hamadan, Kerman, Kermanshah, Mazandaran, Markazi, Teheran, West Azarbaijan, Yazd (Kovařík, 1997a: 47, Lourenço & Pézier, 2002: 116, 117, 124), Chahar Machal & Bakhtiyari (Pirali-Kheirabadi et al., 2009: 10), and Sistan & Baluchistan (Pirali-Kheirabadi et al., 2009: 14) Provinces.
description: Published as part of Navidpour, Shahrokh, Fet, Victor, Kovařík, František & Soleglad, Michael E., 2012, Scorpions of Iran (Arachnida, Scorpiones). Part VIII. Fars Province, pp. 1-29 in Euscorpius 139 on pages 14-16
Discovering the Twin Higgs Boson with Displaced Decays
Creators: name: Kilic, Can
name: Najjari, Saereh
name: Verhaaren, Christopher B.
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The Twin Higgs mechanism keeps the scalar sector of the Standard Model (SM) natural while remaining consistent with the non-observation of new colored particles at the Large Hadron Collider (LHC). In this construction the heavy twin Higgs boson provides a portal between the SM particles and the twin sector, but is quite challenging to discover at colliders. In the Fraternal Twin Higgs setup, where light twin quarks are absent, we study a novel discovery channel for the heavy twin Higgs boson by considering its decay to a pair of light Higgs bosons, one of which subsequently decays to glueball states in the twin sector, leading to displaced vertex signatures. We estimate the sensitivity of existing LHC searches in this channel, and assess the discovery potential of the high luminosity (HL) LHC. We show that the glueballs probed by these searches are outside the sensitivity of existing searches for exotic decays of the light Higgs boson. In addition, we demonstrate that the displaced signals we consider probe a region of heavy Higgs masses beyond the reach of prompt signals. We also comment on the possibility of probing the input parameters of the microscopic physics and providing a way to test the Twin Higgs mechanism with this channel.
description: 27 pages, 9 figures, v2: references updated, minor changes
Charge Localization from Local Destruction of Antiferromagnetic Correlation in Zn-doped YBa2Cu3O7-d
Creators: name: Segawa, Kouji
name: Ando, Yoichi
Publisher: name: arXiv
Year: 1998
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The in-plane normal-state resistivity of Zn-doped YBa2Cu3O7-d single crystals is measured down to low temperatures by suppressing superconductivity with magnetic fields up to 18 T. Substitution of Cu with Zn in the CuO2 planes is found to induce carrier localization at low temperatures in "clean" samples with kF l > 5, where the mean free path l is larger than the electron wave length and thus localization is not normally expected. The destruction of the local antiferromagnetic correlation among Cu spins by Zn is discussed to be the possible origin of this unusual charge localization.
description: 4 pages of LaTeX (revtex and epsf) including 4 postscript figures
Stimulated emission of signal photons from dark matter waves
Creators: name: Agrawal, Ankur
name: Dixit, Akash V.
name: Roy, Tanay
name: Chakram, Srivatsan
name: He, Kevin
name: Naik, Ravi K.
name: Schuster, David I.
name: Chou, Aaron
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The manipulation of quantum states of light has resulted in significant advancements in both dark matter searches and gravitational wave detectors [1-4]. Current dark matter searches operating in the microwave frequency range use nearly quantum-limited amplifiers [3, 5, 6]. Future high frequency searches will use photon counting techniques [1] to evade the standard quantum limit. We present a signal enhancement technique that utilizes a superconducting qubit to prepare a superconducting microwave cavity in a non-classical Fock state and stimulate the emission of a photon from a dark matter wave. By initializing the cavity in an $|n=4\rangle$ Fock state, we demonstrate a quantum enhancement technique that increases the signal photon rate and hence also the dark matter scan rate each by a factor of 2.78. Using this technique, we conduct a dark photon search in a band around $\mathrm{5.965\, GHz \, (24.67\, μeV)}$, where the kinetic mixing angle $ε\geq 4.35 \times 10^{-13}$ is excluded at the $90\%$ confidence level.
description: 17 pages, 17 figures
Additional file 4: of Evaluation of clinical efficacy of silver-needle warm acupuncture in treating adults with acute low back pain due to lumbosacral disc herniation: study protocol for a randomized controlled trial
Creators: name: Li, Tian
name: Wang, Siyao
name: Zhang, Shen
name: Shen, Xueyong
name: Song, Yanwen
name: Yang, Zhen
name: Huang, Zouqin
Publisher: name: figshare
Year: 2019
Subjects: Biochemistry
Space Science
Cell Biology
Developmental Biology
Science Policy

description: Informed consent materials. (DOCX 17 kb)
MGP: Un algorithme de planification temps réel prenant en compte l'évolution dynamique du but
Creators: name: Pellier, Damien
name: Vanneufville, Mickaël
name: Fiorino, Humbert
name: Métivier, Marc
name: Bouzy, Bruno
Publisher: name: arXiv
Year: 2018
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Devising intelligent robots or agents that interact with humans is a major challenge for artificial intelligence. In such contexts, agents must constantly adapt their decisions according to human activities and modify their goals. In this paper, we tackle this problem by introducing a novel planning approach, called Moving Goal Planning (MGP), to adapt plans to goal evolutions. This planning algorithm draws inspiration from Moving Target Search (MTS) algorithms. In order to limit the number of search iterations and to improve its efficiency, MGP delays as much as possible triggering new searches when the goal changes over time. To this purpose, MGP uses two strategies: Open Check (OC) that checks if the new goal is still in the current search tree and Plan Follow (PF) that estimates whether executing actions of the current plan brings MGP closer to the new goal. Moreover, MGP uses a parsimonious strategy to update incrementally the search tree at each new search that reduces the number of calls to the heuristic function and speeds up the search. Finally, we show evaluation results that demonstrate the effectiveness of our approach.
description: in French
Coronagraphic Survey for Companions of Stars within 8 pc
Creators: name: Oppenheimer, B. R.
name: Golimowski, D. A.
name: Kulkarni, S. R.
name: Matthews, K.
name: Nakajima, T.
name: Creech-Eakman, M.
name: Durrance, S. T.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the technique and results of a survey of stars within 8 pc of the Sun with declinations $\bfδ> -35\arcdeg$ (J2000.00). The survey, designed to find without color bias faint companions, consists of optical coronagraphic images of the 1\arcmin field of view centered on each star and infrared direct images with a 32\asc field of view. The images were obtained through the optical Gunn $r$ and $z$ filters and the infrared J and K filters. The survey achieves sensitivities up to four absolute magnitudes fainter than the prototype brown dwarf, Gliese 229B. However, this sensitivity varies with the seeing conditions, the intrinsic brightness of the star observed and the angular distance from the star. As a result we tabulate sensitivity limits for each star in the survey. We used the criterion of common proper motion to distinguish companions and to determine their luminosities. In addition to the brown dwarf Gliese 229B, we have identified 6 new stellar companions of the sample stars. Since the survey began, accurate trigonometric parallax measurements for most of the stars have become available. As a result some of the stars we originally included should no longer be included in the 8 pc sample. In addition, the 8 pc sample is incomplete at the faint end of the main sequence complicating our calculation of the binary fraction of brown dwarfs. We assess the sensitivity of the survey to stellar companions and to brown dwarf companions of various masses and ages.
description: Accepted for publication in the Astronomical Journal. 58 pages, 19 figures, 14 tables
Orthochirus zagrosensis Kovarik 2004
Creators: name: Navidpour, Shahrokh
name: Fet, Victor
name: Kovařík, František
name: Soleglad, Michael E.
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Scorpiones
Buthidae
Orthochirus
Orthochirus zagrosensis

description: Orthochirus zagrosensis Kovařík, 2004
(Fig. 12)
 Orthochirus sp. n.?: Kovařík, 1997a: 47 (in part).
 Orthochirus zagrosensis Kovařík, 2004: 22; Kovařík & Fet, 2006: 8, figs. 7–8; Navidpour et al., 2008a: 20; Navidpour et al., 2008d: 7; Pirali-Kheirabadi et al., 2009: 10, figs. 2–3, 5, 8, 10, 36–39; Navidpour et al., 2011: 17, figs. 14, 49–52.
TYPE LOCALITY AND TYPE REPOSITORY. Iran, Fars Province, Dasht-e-Arzhan, 29°34'N 51°56'E, 2000 m. a.s.l.; (FKCP).
TYPE MATERIAL EXAMINED. Iran, Fars Province, Dashte-Arzhan, 29°34'N 51°56'E, 2000 m. a.s.l., 21– 22.IV.2000, 1♂ (holotype) (FKCP), leg. J. Šobotník.
 OTHER FARS PROVINCE MATERIAL EXAMINED. Iran, Fars Province, Zagros Mts., Abshar env., 30º23'N 51º30'E, ca 1000 m a.s.l., 2.-3.V.1996, 2juvs. (FKCP), leg. V. Šejna.
DISTRIBUTION: Iran, Esfahan, Fars, Kerman, Kohgilouyeh & Boyer Ahmad, Yazd (Kovařík, 1997a; Kovařík, 2004: 22), and Chahar Machal & Bakhtiyari (Pirali-Kheirabadi et al., 2009: 10) Provinces.
description: Published as part of Navidpour, Shahrokh, Fet, Victor, Kovařík, František & Soleglad, Michael E., 2012, Scorpions of Iran (Arachnida, Scorpiones). Part VIII. Fars Province, pp. 1-29 in Euscorpius 139 on page 17
Dynamical reconstruction of the $Λ$CDM model in scalar-tensor $f(R,T)$ gravity
Creators: name: Gonçalves, Tiago B.
name: Rosa, João Luís
name: Lobo, Francisco S. N.
Publisher: name: arXiv
Year: 2023
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this work, we use the dynamical system approach to explore the cosmological background evolution of the scalar-tensor representation of $f(R,T)$ gravity, where $R$ is the Ricci scalar and $T$ is the trace of the stress-energy tensor. The motivation for this work resides in finding dynamical cosmological behaviors comparable with the $Λ$CDM model without the necessity of recurring to a dark energy component. We introduce a set of dynamical variables that allow for a direct comparison with the cosmological standard model and the current experimental measurements, and develop a dynamical system framework to analyze the cosmological evolution of Friedmann-Lemaître-Robertson-Walker (FLRW) universes within this theory. In this framework, we obtain the critical points in the cosmological phase space and perform fully numerical integrations of the dynamical system to extract the cosmological behavior, subjected to initial conditions compatible with the measurements by the Planck satellite. The phase space of the theory is proven to feature fixed points associated with cosmological behaviors analogous to those of GR, whereas variations in the scalar field associated to the dependency in $T$ affect the phase space structure only quantitatively. Our results indicate that cosmological solutions featuring a radiation dominated epoch, followed by a transition into a matter dominated epoch, and finally a transition into an exponentially accelerated epoch, are allowed by the theory, while maintaining a present state compatible with the current measurements from the Planck satellite and solar system dynamics, and preserving the regularity of the scalar fields and their interaction potential.
description: 18 pages, 8 figures, 6 tables. Substantial changes made to first version
Comment on ``Effective Mass and g-Factor of Four Flux Quanta Composite Fermions"
Creators: name: Yoshioka, Daijiro
Publisher: name: arXiv
Year: 1998
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In a recent Letter, Yeh et al.[Phys. Rev. Lett. 82, 592 (1999)] have shown beautiful experimental results which indicate that the composite fermions with four flux quanta ($^4$CF) behave as fermions with mass and spin just like those with two flux quanta. They observed the collapse of the fractional quantum Hall gaps when the following condition is satisfied with some integer $j$, $g^*μ_{\rm B}B_{\rm tot} = j \hbar ω_{\rm c}^*$, where $g^*$ and $ω_{\rm c}^*$ are the g-factor and the cyclotron frequency of the $^4$CF, respectively. However, in their picture the gap at the Fermi energy remains always finite even if the above condition is satisfied, thus the reason of the collapse was left as a mystery. In this comment it is shown that part of the mystery is resolved by considering the electron-hole symmetry properly.
description: 2 pages, RevTeX. Minor change
Multiple Peaks and a Long Precursor in the Type IIn Supernova 2021qqp: An Energetic Explosion in a Complex Circumstellar Environment
Creators: name: Hiramatsu, Daichi
name: Matsumoto, Tatsuya
name: Berger, Edo
name: Ransome, Conor
name: Villar, V. Ashley
name: Gomez, Sebastian
name: Cendes, Yvette
name: De, Kishalay
name: Bostroem, K. Azalee
name: Farah, Joseph
name: Howell, D. Andrew
name: McCully, Curtis
name: Newsome, Megan
name: Gonzalez, Estefania Padilla
name: Pellegrino, Craig
name: Suzuki, Akihiro
name: Terreran, Giacomo
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present optical photometry and spectroscopy of the Type IIn supernova (SN) 2021qqp. Its unusual light curve is marked by a long precursor for $\approx300$ days, a rapid increase in brightness for $\approx60$ days, and then a sharp increase of $\approx1.6$ mag in only a few days to a first peak of $M_r \approx -19.5$ mag. The light curve then declines rapidly until it re-brightens to a second distinct peak of $M_r \approx -17.3$ mag centered at $\approx335$ days after the first peak. The spectra are dominated by Balmer lines with a complex morphology, including a narrow component with a width of $\approx 1300$ km s$^{-1}$ (first peak) and $\approx 2500$ km s$^{-1}$ (second peak) that we associate with the circumstellar medium (CSM) and a P Cygni component with an absorption velocity of $\approx 8500$ km s$^{-1}$ (first peak) and $\approx 5600$ km s$^{-1}$ (second peak) that we associate with the SN-CSM interaction shell. Using the luminosity and velocity evolution, we construct a flexible analytical model, finding two significant mass-loss episodes with peak mass loss rates of $\approx 10$ and $\approx 5\,M_{\odot}$ yr$^{-1}$ about $0.8$ and $2$ yr before explosion, respectively, with a total CSM mass of $\approx 2-4\,M_{\odot}$. We show that the most recent mass-loss episode could explain the precursor for the year preceding the explosion. The SN ejecta mass is constrained to be $\approx 5-30\,M_{\odot}$ for an explosion energy of $\approx (3-10)\times10^{51}$ erg. We discuss eruptive massive stars (luminous blue variable, pulsational pair instability) and an extreme stellar merger with a compact object as possible progenitor channels.
description: Updated to match the published article in ApJ, 2024 March 29
Pandinus Thorell 1876
Creators: name: Kovařík, František
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Scorpiones
Scorpionidae
Pandinus

description: Pandinus Thorell, 1876
(Figs. 1–64)
 Pandinus Thorell, 1876: 12; Kraepelin, 1899: 116; Vachon, 1974: 953, figs. 113–118; Sissom, 1990: 136; Fet, 1997: 248; Fet, 2000: 465; Prendini, 2000: 44; Kovařík, 2009: 50, figs. 284–420; Kovařík, 2011: 1, figs. 1–42.
 TYPE SPECIES. Buthus imperator C. L. Koch, 1841.
DIAGNOSIS. Total length 50–220 mm. Pedipalp femur with 3 trichobothria, only one of them on internal surface. Pedipalp patella with 13–16 external and numerous (usually about 30) ventral trichobothria. Retrolateral pedal spurs absent. Lateroapical margins of tarsi produced into rounded lobes. Metasomal segments I–IV with paired ventral submedian carinae. Stridulatory organ located on opposing surfaces of pedipalp coxa and first leg. Telson without subaculear tubercle.
description: Published as part of Kovařík, František, 2012, Review of the subgenus Pandinurus Fet, 1997 with descriptions of three new species (Scorpiones, Scorpionidae, Pandinus), pp. 1-22 in Euscorpius 141 on page 3
Quantum state smoothing cannot be assumed classical even when the filtering and retrofiltering are classical
Creators: name: Laverick, Kiarn T.
name: Warszawski, Prahlad
name: Chantasri, Areeya
name: Wiseman, Howard M.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: State smoothing is a technique to estimate a state at a particular time, conditioned on information obtained both before (past) and after (future) that time. For a classical system, the smoothed state is a normalized product of the $\textit{filtered state}$ (a state conditioned only on the past measurement information and the initial preparation) and the $\textit{retrofiltered effect}$ (depending only on the future measurement information). For the quantum case, whilst there are well-established analogues of the filtered state ($ρ_{\rm F}$) and retrofiltered effect ($\hat E_{\rm R}$), their product does not, in general, provide a valid quantum state for smoothing. However, this procedure does seem to work when $ρ_{\rm F}$ and $\hat E_{\rm R}$ are mutually diagonalizable. This fact has been used to obtain smoothed quantum states -- more pure than the filtered states -- in a number of experiments on continuously monitored quantum systems, in cavity QED and atomic systems. In this paper we show that there is an implicit assumption underlying this technique: that if all the information were known to the observer, the true system state would be one of the diagonal basis states. This assumption does not necessarily hold, as the missing information is quantum information. It could be known to the observer only if it were turned into a classical measurement record, but then its nature depends on the choice of measurement. We show by a simple model that, depending on that measurement choice, the smoothed quantum state can: agree with that from the classical method; disagree with it but still be co-diagonal with it; or not even be co-diagonal with it. That is, just because filtering and retrofiltering appear classical does not mean classical smoothing theory is applicable in quantum experiments.
description: 20 Pages, 9 Figures. Comments are welcomed!
Adoção de Social CRM em Micro e Pequenas Empresas: Uma Análise do Mercado Santareno
Creators: name: de Sousa, Gustavo Nogueira
name: Huppes, Luan Vinícius
name: Jacob, Antônio Fernando Lavareda
name: Lobato, Fábio Manoel França
Publisher: name: arXiv
Year: 2018
Subjects: subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: Online social networks have changed the ways of communication and social interactions, especially in the Customer Relationship Management (CRM). In this sense, a new concept about business strategies involving CRM and social media has aroused, known as Social Customer Relationship Management. Despite to be an emergent and promising research field, it was perceived that Micro and Small Enterprises (MSE) have shown few or no process of Social CRM implemented. Aiming to test this hypothesis, this work conducts a market analysis in Santarém City, located in the Pará State, evaluating the adoption of Social CRM by MSE. The main contribution of this study is related to the understanding of the dynamics between Social CRM and MSE. As results, the construction of insights' list of products and solutions suitable for the implementation of Social CRM by MSE, with the potential to guide research and development projects in this area.
description: in Portuguese, Paper presented at the 15th International Conference On Information Systems & Technology Management
Phase diagram of the two-chain Hubbard model
Creators: name: Park, Youngho
name: Liang, Shoudan
name: Lee, T. K.
Publisher: name: arXiv
Year: 1998
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We have calculated the charge gap and spin gap for the two-chain Hubbard model as a function of the on-site Coulomb interaction and the interchain hopping amplitude. We used the density matrix renormalization group method and developed a method to calculate separately the gaps numerically for the symmetric and antisymmetric modes with respect to the exchange of the chain indices. We have found very different behaviors for the weak and strong interaction cases. Our calculated phase diagram is compared to the one obtained by Balents and Fisher using the weak coupling renormalization group technique.
description: 4 pages, 6 figures, to appear in PRB
Impact of K16A and K28A mutation on the structure and dynamics of amyloid-β42 peptide in Alzheimer’s disease: Key insights from molecular dynamics simulations†
Creators: name: Suniba Shuaib
name: Rajneet Kaur Saini
name: Dr. Deepti Goyal
name: Dr. Bhupesh Goyal
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Neuroscience
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Cancer
subject: Computational Biology

description: The aggregation of amyloid-β42 (Aβ42) peptide into toxic oligomers and fibrils is a key step in the Alzheimer disease pathogenesis. The recent studies highlighted that lysine residues (K16 and K28) play a critical role in the Aβ42 self-assembly and are the target of entities like molecular tweezer, CLR01. The studies reveal that lysine to alanine mutation significantly affect Aβ oligomerization, toxicity and aggregation process. However, the molecular mechanism behind reduced Aβ toxicity on K16A and K28A mutation remain elusive. In this regard, molecular dynamics simulations were performed in the present study to get insights into the effect of K16A and K28A mutation in Aβ42 self-assembly. The molecular dynamics simulations highlighted that K16A and K28A mutation in the aggregation-prone region, i.e., central hydrophobic core (KLVFF, 16–20) and bend region (D23–K28), cause major structural changes in the Aβ42 monomer. The secondary structure analysis highlight that modulation of aggregation in K16A and K28A is linked to the increase in the overall helix content and a concomitant decrease in the β–sheet content of Aβ42 monomer. The short-range tertiary contacts between central hydrophobic core and C-terminal region were relatively reduced in K16A and K28A as compare to wild type (wt) Aβ42. The mechanistic insights from the study will be beneficial for the design and development of novel inhibitors that will bind and block the interactions, mediated by lysine residues specifically, critical for the Aβ42 self-assembly in Alzheimer disease. The molecular mechanism behind modulation of amyloid-β42 (Aβ42) self-assembly on K16A and K28A mutation has been investigated using molecular dynamics (MD) simulations. MD simulations reveal that reduced aggregation in K16A and K28A is linked to the increase in the overall helix content and a concomitant decrease in the β–sheet content, particularly at the C–terminal region, of Aβ42.
Multiscale dendritic needle network model of alloy solidification with fluid flow
Creators: name: Tourret, D.
name: Francois, M. M.
name: Clarke, A. J.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present a mathematical formulation of a multiscale model for solidification with convective flow in the liquid phase. The model is an extension of the dendritic needle network approach for crystal growth in a binary alloy. We propose a simple numerical implementation based on finite differences and step-wise approximations of parabolic dendritic branches of arbitrary orientation. Results of the two-dimensional model are verified against reference benchmark solutions for steady, unsteady, and buoyant flow, as well as steady-state dendritic growth in the diffusive regime. Simulations of equiaxed growth under forced flow yield dendrite tip velocities within 10% of quantitative phase-field results from the literature. Finally, we perform illustrative simulations of polycrystalline solidification using physical parameters for an aluminum-10wt%copper alloy. Resulting microstructures show notable differences when taking into account natural buoyancy in comparison to a purely diffusive transport regime. The resulting model opens new avenues for computationally and quantitatively investigating the influence of fluid flow and gravity-induced buoyancy upon the selection of dendritic microstructures. Further ongoing developments include an equivalent formulation for directional solidification conditions and the implementation of the model in three dimensions, which is critical for quantitative comparison to experimental measurements.
Analyse de l'Impact de la Politique Budgétaire sur la Pauvreté et les Inégalités au Maroc (1995-2023)
Creators: name: EL HAZZAZ, Nada
name: OUAZZANI TOUHAMI, Naoual
Publisher: name: Zenodo
Year: 2025
Subjects: politique budgétaire ; inégalité ; pauvreté ; modèle VAR ; croissance économique.

description: Les performances en matière de stabilisation macroéconomique observées dans les années 1980 et 1990 ont mis en évidence le potentiel de la politique budgétaire pour promouvoir la croissance et le développement. Dépassant le simple rôle de stimulation à court terme, cette politique peut devenir un moteur essentiel pour atteindre des objectifs de développement durable à long terme, notamment la réduction de la pauvreté et des inégalités. Si ces dimensions sont ignorées, la stabilité économique à court terme risque de compromettre la croissance et le développement à long terme. L'impact de la politique budgétaire sur le développement économique demeure sujet à controverse. Certains experts avancent que des taux d’imposition élevés freinent la croissance, tandis que d’autres y voient un outil indispensable pour stabiliser l’économie et soutenir le marché de l’emploi.

Cette étude évalue l’impact de la politique budgétaire sur la pauvreté et les inégalités au Maroc. À l’aide d’une modélisation VAR (Vector Autoregressive), elle examine les effets des dépenses publiques, notamment en santé et éducation, sur le taux de chômage et la croissance économique entre 1995 et 2023. Les données proviennent de sources nationales (Haut-Commissariat au Plan, Ministère de l’Économie et des Finances, Bank Al-Maghrib) et internationales (Banque mondiale, Fonds monétaire international).
Additional file 3 of Anaplasma phagocytophilum in Marmota himalayana
Creators: name: Duan, Ran
name: Lv, Dongyue
name: Fan, Rong
name: Fu, Guoming
name: Mu, Hui
name: Xi, Jinxiao
name: Lu, Xinmin
name: Chun, Hua
name: Hua, Jun
name: He, Zhaokai
name: Qin, Shuai
name: Huang, Yanyan
name: Xiao, Meng
name: Yang, Jinchuan
name: Jing, Huaiqi
name: Wang, Xin
Publisher: name: figshare
Year: 2022
Subjects: subject: Space Science
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Molecular Biology
subject: Physiology
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 3: Table S1. Characteristics of samples positive for A. phagocytophilum in M. himalayana. Grey column: samples screened for A. phagocytophilum. √: Positive samples for A. phagocytophilum, confirmed by both 16s rRNA and groESL gene sequences. *: Positive samples had a 1380-bp cloned sequence of groESL. a: Y, marmots found dead in the environment. N, marmots captured for plague surveillance.
Pandinus (Pandinurus) Fet 1997
Creators: name: Kovařík, František
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Scorpiones
Scorpionidae
Pandinus

description: Subgenus Pandinurus Fet, 1997
(Figs. 1–64)
 Pandinus (Pandinurus) Vachon, 1974: 953, nomen nudum (type species not designated).
 Pandinus (Pandinurus) Fet, 1997: 248; Fet, 2000: 470; Kovařík, 2009: 54, figs. 295–303, 336–385, 420.
 TYPE SPECIES. Scorpio exitialis Pocock, 1888 (see notes in Fet, 2000: 470).
DIAGNOSIS: Total length 50–140 mm. Chela with 2 internal and 6–14 ventral trichobothria. Pectinal teeth number 14–24.
description: Published as part of Kovařík, František, 2012, Review of the subgenus Pandinurus Fet, 1997 with descriptions of three new species (Scorpiones, Scorpionidae, Pandinus), pp. 1-22 in Euscorpius 141 on page 3
Enriched string-net models and their excitations
Creators: name: Green, David
name: Huston, Peter
name: Kawagoe, Kyle
name: Penneys, David
name: Poudel, Anup
name: Sanford, Sean
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mathematical Physics (math-ph)
subject: Category Theory (math.CT)
subject: Quantum Algebra (math.QA)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 18M20 (Primary) 81V27, 18M30, 57R56 (Secondary)

description: Boundaries of Walker-Wang models have been used to construct commuting projector models which realize chiral unitary modular tensor categories (UMTCs) as boundary excitations. Given a UMTC $\mathcal{A}$ representing the Witt class of an anomaly, the article [arXiv:2208.14018] gave a commuting projector model associated to an $\mathcal{A}$-enriched unitary fusion category $\mathcal{X}$ on a 2D boundary of the 3D Walker-Wang model associated to $\mathcal{A}$. That article claimed that the boundary excitations were given by the enriched center/Müger centralizer $Z^\mathcal{A}(\mathcal{X})$ of $\mathcal{A}$ in $Z(\mathcal{X})$.
 In this article, we give a rigorous treatment of this 2D boundary model, and we verify this assertion using topological quantum field theory (TQFT) techniques, including skein modules and a certain semisimple algebra whose representation category describes boundary excitations. We also use TQFT techniques to show the 3D bulk point excitations of the Walker-Wang bulk are given by the Müger center $Z_2(\mathcal{A})$, and we construct bulk-to-boundary hopping operators $Z_2(\mathcal{A})\to Z^{\mathcal{A}}(\mathcal{X})$ reflecting how the UMTC of boundary excitations $Z^{\mathcal{A}}(\mathcal{X})$ is symmetric-braided enriched in $Z_2(\mathcal{A})$.
 This article also includes a self-contained comprehensive review of the Levin-Wen string net model from a unitary tensor category viewpoint, as opposed to the skeletal $6j$ symbol viewpoint.
description: 43 pages; numerous figures
Safe Trinification
Creators: name: Wang, Zhi-Wei
name: Balushi, Abdulrahim Al
name: Mann, Robert
name: Jiang, Hao-Miao
Publisher: name: arXiv
Year: 2018
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this work, we provide a UV safe Trinification theory in which the Standard Model is embedded. Using recently developed large number-of-flavor techniques, safety is achieved by adding to the theory gauged vector-like fermions. We find that all gauge, scalar quartic, and Yukawa couplings achieve an interacting ultraviolet fixed point below the Planck scale. We find renormalization group flow solutions matching the Standard Model in the IR, indicating a truly UV completion of the Standard Model. Imposing constraints that realistic Higgs, top, bottom, tau and reasonable neutrino masses are recovered, we find the set of allowed solutions to be quite restrictive. Furthermore, the symmetry breaking scale is predicted to be around 10 TeV, making this model vulnerable to experiment.
description: 22 pages, 8 figures, typos fixed. arXiv admin note: text overlap with arXiv:1807.03669
On the Theory of a New Maximum Observed in dc Transport in Modulated Quantum Hall Systems Near ν=1/2
Creators: name: Zimbovskaya, Nataliya a.
name: Birman, Joseph L.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We propose a theory for the new maximum recently observed by Willett et al [1] in the longitudinal magnetoresistance of a weakly modulated two-dimensional electron gas (2DEG) near filling factor ν=1/2 for the current driven along the modulation lines. The maximum is superimposed upon a new resonance structure. This occurs due to the geometric resonance of composite fermion cyclotron orbits with the period of modulation of the effective magnetic field. We propose here a semiquantitative theory of the dc magnetotransport in a modulated 2DEG near one half filling. Our analysis is based on the Boltzmann transport equation and it enables us to obtain this maximum which was neither observed nor predicted previously.
description: 5 pages, 2 figures, text revised
Genotypic diversity of Mycobacterium tuberculosis isolates from North-Central Indian population
Creators: name: Prakash, Ravi
name: Gupta, Rahul
name: Sharma, Pragya
name: Jain, Sanjay
name: Chauhan, Devendra Singh
name: Vishwa Mohan Katoch
name: Tiwari, Pramod Kumar
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Biotechnology
subject: Evolutionary Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer
subject: Computational Biology

description: Background: Different strains of Mycobacterium tuberculosis (MTB) are known to have different epidemiological and clinical characteristics. Some of them are widely distributed and associated with drug resistance, whereas others are locally predominated. Molecular epidemiological investigations have always been beneficial in identifying new strains and studying their transmission dynamics. Sahariya a primitive tribe of North Madhya Pradesh, India, has already been reported to have high prevalence of tuberculosis (TB) than their non-tribal neighbours. However, the information about MTB genotypes prevalent in Sahariya tribe and their non-tribal neighbours is not available. Methods: A total of 214 clinical isolates representing Sahariya tribe and non-tribes were analyzed by spoligotyping and MIRU-VNTR typing. Results: The EAI3_IND/SIT11 genotype was observed as major genotype in Sahariya tribe followed by CAS1_Delhi/SIT26 genotype. A 3.04 fold higher risk of getting TB with EAI3_IND/SIT11 genotype was observed in Sahariya as compared to the non-tribal population. The EAI_IND/SIT11 genotype also found to have more number of MDR-TB cases in Sahariya as well as true and possible transmission links. In Sahariya tribe, 3 clusters (6 isolates) reflected true transmission links, whereas 8 clusters consisted of 26 isolates revealed possible transmission links within the same geographical location or nearby houses. Conclusion: The present study highlighted the predominance of EAI3_IND/SIT11 genotype in Sahariya tribe followed by CAS1_Delhi/SIT26 genotype. Combined approach of MIRU-VNTR typing and spoligotyping was observed more favourable in discrimination of MTB genotypes. Further, longitudinal studies using whole genome sequencing can provide more insights into genetic diversity, drug resistance and transmission dynamics of these prevalent genotypes.
Building resilience in second year resident registered nurse anesthetists with targeted focused groups
Creators: name: Aitkens, Alexa
name: Gomez, Carolina
Publisher: name: No Publisher Supplied
Year: 2021

description: Purpose of the Project The hardships and stress endured while in nurse anesthesia programs has been well documented in current and past nurse anesthesia literature, thus leading to higher levels of stress with a reduction in student self-efficacy particularly while transitioning from didactic to clinical education. Whilst that remains true, few programs exist to address the newly added stress or educate ways in which to handle this vulnerable time period. Methodology Current second-year students (n= 22) at a large state university in New Jersey who were in the transition phase of their education, partook in a prospective, descriptive, quantitative designed study based on the use ABC model of Cognitive Behavioral Therapy (CBT). Study conductors looked to explore and understand the relationship between thoughts and reactions, both emotional and behavioral. Pre- and post Perceived Stress Scales and Self Reflection surveys were conducted measuring the personal beliefs and attitudes that contribute to how helpful the ABC Belief Monitoring form of CBT was during focus groups. Results The Wilcoxon sign rank test was used to analyze pre and post survey data. CBT focus groups provided positive benefits towards building resilience in second year RRNAs. Implications RRNA’s began to learn methods to alleviate negative feelings, develop positive coping mechanisms, improve self-efficacy, and build resilience for the duration of their education and beyond. By using the ABC model of CBT, a more confident, resilient and adaptable student will be developed which in turn leads to a more confident, resilient and adaptable employee within the profession.
A radio continuum survey of the southern sky at 1420 MHz. Observations and data reduction
Creators: name: Testori, J. C.
name: Reich, P.
name: Bava, J. A.
name: Colomb, F. R.
name: Hurrel, E. E.
name: Larrarte, J. J.
name: Reich, W.
name: Sanz, A. J.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We describe the equipment, observational method and reduction procedure of an absolutely calibrated radio continuum survey of the South Celestial Hemisphere at a frequency of 1420 MHz. These observations cover the area 0h < R.A. < 24h for declinations less than -10 degree. The sensitivity is about 50 mK T_B (full beam brightness) and the angular resolution (HPBW) is 35.4', which matches the existing northern sky survey at the same frequency.
description: 9 pages with 9 figures, A&A, in press
A^2-Net: Molecular Structure Estimation from Cryo-EM Density Volumes
Creators: name: Xu, Kui
name: Wang, Zhe
name: Shi, Jiangping
name: Li, Hongsheng
name: Zhang, Qiangfeng Cliff
Publisher: name: arXiv
Year: 2019
Subjects: subject: Machine Learning (cs.LG)
subject: Quantitative Methods (q-bio.QM)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences

description: Constructing of molecular structural models from Cryo-Electron Microscopy (Cryo-EM) density volumes is the critical last step of structure determination by Cryo-EM technologies. Methods have evolved from manual construction by structural biologists to perform 6D translation-rotation searching, which is extremely compute-intensive. In this paper, we propose a learning-based method and formulate this problem as a vision-inspired 3D detection and pose estimation task. We develop a deep learning framework for amino acid determination in a 3D Cryo-EM density volume. We also design a sequence-guided Monte Carlo Tree Search (MCTS) to thread over the candidate amino acids to form the molecular structure. This framework achieves 91% coverage on our newly proposed dataset and takes only a few minutes for a typical structure with a thousand amino acids. Our method is hundreds of times faster and several times more accurate than existing automated solutions without any human intervention.
description: 8 pages, 5 figures, 4 tables
Building resilience in second year resident registered nurse anesthetists with targeted focused groups
Creators: name: Gomez, Carolina
name: Aitkens, Alexa
Publisher: name: No Publisher Supplied
Year: 2021

description: Purpose of the Project The hardships and stress endured while in nurse anesthesia programs has been well documented in current and past nurse anesthesia literature, thus leading to higher levels of stress with a reduction in student self-efficacy particularly while transitioning from didactic to clinical education. Whilst that remains true, few programs exist to address the newly added stress or educate ways in which to handle this vulnerable time period. Methodology Current second-year students (n= 22) at a large state university in New Jersey who were in the transition phase of their education, partook in a prospective, descriptive, quantitative designed study based on the use ABC model of Cognitive Behavioral Therapy (CBT). Study conductors looked to explore and understand the relationship between thoughts and reactions, both emotional and behavioral. Pre- and post Perceived Stress Scales and Self Reflection surveys were conducted measuring the personal beliefs and attitudes that contribute to how helpful the ABC Belief Monitoring form of CBT was during focus groups. Results The Wilcoxon sign rank test was used to analyze pre and post survey data. CBT focus groups provided positive benefits towards building resilience in second year RRNAs. Implications RRNA’s began to learn methods to alleviate negative feelings, develop positive coping mechanisms, improve self-efficacy, and build resilience for the duration of their education and beyond. By using the ABC model of CBT, a more confident, resilient and adaptable student will be developed which in turn leads to a more confident, resilient and adaptable employee within the profession.
Influence of stormwater control measures on water quality at nested sites in a small suburban watershed
Creators: name: Scarlett, Rachel D.
name: McMillan, Sara K.
name: Bell, Colin D.
name: Clinton, Sandra M.
name: Jefferson, Anne J.
name: P. Suresh C. Rao
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biophysics
subject: Biochemistry
subject: Space Science
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Marine Biology
subject: Inorganic Chemistry

description: Stormwater control measures (SCMs) are designed to mitigate the deleterious impacts of urban runoff on the water quality of receiving waters. To assess the cumulative effects of SCMs at the watershed scale, we monitored longitudinal changes in storm discharge and stream water chemistry at high temporal resolution in a suburban headwater stream in Charlotte, NC. SCMs significantly decreased or stabilized instream concentrations of reactive solutes (nitrate, soluble reactive phosphorus, and dissolved organic carbon) relative to the upstream control site. However, SCM outflows minimally influenced concentrations of less reactive solutes (major ions) which increased with urbanization. Additionally, instream concentration variability correlated with antecedent moisture conditions – representative of watershed storage availability – highlighting the role that SCM storage availability plays in the timing of solute delivery to the stream. Our results show that SCMs decrease instream concentrations of biogeochemically reactive solutes but the mitigation potential is temporally dynamic and influenced by antecedent conditions.