cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Mediation of transformation by the v-fos oncogene: regulation of the invasive phenotype by histone deacetylases
Creators: name: McGarry, Lynn C
Publisher: name: The Open University
Year: 2004

description: Transformation of fibroblasts with the v-fos oncogene produces a highly invasive phenotype. Accordingly, genes up- and down-regulated by v-Fos are of crucial importance in mediating a multigenic invasion programme. Differential expression studies revealed that components of histone deacetylase (HDAC) transcriptional co-repressor complexes are up-regulated in FBR-v-Fos-transformed (FBR) cells. Since HDACs facilitate gene silencing, we investigated the consequences of inhibiting their activity in terms of gene re-expression and phenotypic changes. We treated FBR cells with the HDAC inhibitors, trichostatin A (TSA) and valproic acid (VPA), at a range of sub-growth-inhibitory concentrations. At higher concentrations within this range, actin stress-fibres reform, transformed morphology reverts, cells are less motile and invasion is inhibited. Significantly, however, at lower concentrations within this range we inhibit invasion and actin stress-fibres reform but morphology, motility and chemotaxis are unaffected. This demonstrates the involvement of different groups of genes in different aspects of the transformed phenotype. In a limited study, we found several genes, down-regulated in FBR cells, which are then re-expressed as a consequence of HDAC inhibition. Ectopic re-expression (stable and transient) of three of these genes (RYBP, PCDHGC3 and STAT6) individually, in FBR cells, inhibits invasion without affecting morphology, motility or chemotaxis; nor do actin stress-fibres reform. These results demonstrate that the down-regulation of genes by Fos can be mediated by histone deacetylases and that many of these down-regulated genes, when normally expressed in fibroblasts, function to maintain the non-invasive state, in that their expression is incompatible with the invasive phenotype.
Extracting γfrom Bd(t) -> D(*)+ D(*)- and Bd -> Ds(*)+ D(*)- Decays
Creators: name: Datta, Alakabha
name: London, David
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We show that the CP phase γcan be obtained from measurements of Bd(t) -> D(*)+ D(*)- and Bd -> Ds(*)+ D(*)-. These decays are related by flavor SU(3) in the limit where spectator-quark contributions are small. If the pseudoscalar-pseudoscalar decays Bd(t) -> D+ D- and Bd -> Ds+ D- are used, the leading-order SU(3)-breaking effect is f_Ds/f_D. The dependence on decay constants can be removed by using a double ratio involving two helicity states of the vector-vector decays Bd(t) -> D*+ D*- and Bd -> Ds*+ D*-. In this case the theoretical error arising from all sources is in the range 5-10%.
description: 11 pages, latex, no figures. Added a paragraph and 2 references comparing SU(3) breaking in D and B decays. Conclusions and method unchanged
title: The effect of molybdenum, iron and sulphur on copper metabolism and physiology of sheep
Creators: name: Williams, Claire Louise
Publisher: name: The Open University
Year: 2004

description: Four experiments were carried out to investigate the effects of the dietary antagonists molybdenum (Mo) or iron (Fe) on copper (Cu) metabolism and physiology of sheep. In experiment 1, dietary Mo or Fe was provided in diets of Charollais cross growing lambs to investigate the effects on Cu status and performance. Dietary Mo or Fe had no effect on lamb performance but there were significant effects on Cu status. Plasma copper (Pl-Cu) concentrations were significantly higher in lambs that received dietary Mo (P<0.001) and ceruloplasmin (CP) activities were significantly lower (P<0.01) in lambs that received dietary Mo. Dietary Mo significantly altered the CP:Pl-Cu ratio in addition to significantly reducing liver Cu concentrations. No clinical symptoms were observed. In experiment 2, the effect of dietary Mo or Fe on immune responses of Charollais cross growing lambs were investigated. Cell mediated and humoral immunity were not affected by dietary treatment despite liver Cu concentrations being significantly lower (P<0.001) in lambs fed dietary Mo. In experiment 3, dietary Mo or Fe was provided in diets to Charollais cross growing lambs to investigate the effects on Cu status and trace element accumulation in the pituitary, ovary, cerebellum and liver. In addition, effects on pituitary function and ovary morphology were investigated. Dietary Mo significantly (P<0.001) reduced Cu concentrations in the liver in addition to significantly increasing (P<0.001) Mo concentration in the liver and ovary. Dietary Mo was found to significantly increase retention of ACTH in the pituitary gland. There were no conclusive effects of dietary treatment on pituitary or ovary histology. In experiment 4, dietary Mo or Fe was provided in the diets of Scottish Blackface wethers to determine the effects on Cu status and hepatic CP mRNA expression. CP mRNA expression was found to be unaffected by dietary treatment. These studies confirmed that dietary Mo was a more potent antagonist on Cu metabolism and physiology in sheep than dietary Fe.
One Loop Predictions of the Finely Tuned SSM
Creators: name: Arvanitaki, Asimina
name: Davis, Chad
name: Graham, Peter W.
name: Wacker, Jay G.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the finely tuned SSM, recently proposed by Arkani-Hamed and Dimopoulos, at the one loop level. The runnings of the four gaugino Yukawa couplings, the mu term, the gaugino masses, and the Higgs quartic coupling are computed. The Higgs mass is found to be 130 - 170 GeV for M_s > 10^6 GeV. If the Yukawa coupling constants are measured at the 1% level, this can determine the SUSY breaking scale to within an order of magnitude. Measuring the relationships between the couplings to this accuracy provides a striking signal for this model.
description: 5 pages, 4 figures; v2: Minor corrections to anomalous dimensions and beta functions. Numerical results are not significantly affected. v3: Minor changes to figures and references, as published in PRD
Internet websites statistics expressed in the framework of the Ursell-Mayer cluster formalism
Creators: name: Bar, D.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: We show that it is possible to generalize the Ursell-Mayer cluster formalism so that it may cover also the statistics of Internet websites. Our starting point is the introduction of an extra variable that is assumed to take account, as will be explained, of the nature of the Internet statistics. We then show, following the arguments in Mayer, that one may obtain a phase transition-like phenomena
description: 27 pages, 2 figure; A new figure has been added and the former Section 2 has been subdivided to several subsections
Quantum gravity correction to Hawking radiation of the 2+1 dimensional wormhole
Creators: name: Gecim, Ganim
name: Sucu, Yusuf
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We carry out the Hawking temperature of a (2+1) dimensional circularly symmetric traversable wormhole in the framework of the generalized uncertainty principle (GUP). Firstly, we introduce the modified Klein-Gordon equation of the spin-0 particle, the modified Dirac equation of the spin-1/2 particle, and the modified vector boson equation of the spin-1 particle in the wormhole background, respectively. Given these equations under the Hamilton-Jacobi approach, we analyze the GUP effect on the tunneling probability of these particles near the trapping horizon, and subsequently, on the Hawking temperature of the wormhole. Furthermore, we have found that the modified Hawking temperature of the wormhole is determined by both wormhole's and tunneling particle's properties and indicated that the wormhole has a positive temperature similar to that of a physical system. This case indicates that the wormhole may be supported by ordinary (non-exotic) matter. In addition, we calculate the Unruh-Verlinde temperature of the wormhole by using Kodama vectors instead of time-like Killing vectors, and observe that it equals to the standard Hawking temperature of the wormhole.
description: 16 pages, accepted for publication in Adv. High Energy Phys
Andrena (Plastandrena) prunorum Cockerell 1896
Creators: name: Pedro, Diego De
name: Ceccarelli, Fadia Sara
name: Sagot, Philippe
name: López-Reyes, Eulogio
name: Mullins, Jessica L.
name: Mérida-Rivas, Jorge A.
name: Falcon-Brindis, Armando
name: Griswold, Terry
name: Ascher, John S.
name: Gardner, Joel
name: Ayala, Ricardo
name: Vides-Borrell, Eric
name: Vandame, Rémy
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy

description: Andrena (Plastandrena) prunorum Cockerell, 1896
[Lectotype: USNM; ♂ Las Cruces, New Mexico, US; March 26, 1896]
This species is abundant in northern BC and both subspecies A. prunorum prunorum Cockerell, 1896 and A. prunorum sinaloa Viereck, 1926 can be found. There are records of 27 specimens (14 ♀, 11 ♂) collected in the Lower Colorado Desert in March 1966 vouchered in the BBSL and the AMNH (GBIF 2023). We examined seven males, three collected in the Coastal Sage Matorral in March 1984, one in the Baja California Mountains in Sierra San Pedro Mártir in June 1953, and three in the Lower Colorado Desert in April 1965 (CASC). There are additional records from the Coastal Sage Matorral, Chaparral, and Lower Colorado Desert. Additionally, the BBPT collected this species in the Coastal Sage Matorral in March and April 2021 (5 ♀, 2 ♂), Chaparral in 2021 (6 ♀, 3 ♂) and Central Desert in April 2023 (9 ♀, 1 ♂). Voucher specimens are in MABC (10 ♀, 3 ♂) and ECOAB (10 ♀, 3 ♂). See fig. 18.
description: Published as part of Pedro, Diego De, Ceccarelli, Fadia Sara, Sagot, Philippe, López-Reyes, Eulogio, Mullins, Jessica L., Mérida-Rivas, Jorge A., Falcon-Brindis, Armando, Griswold, Terry, Ascher, John S., Gardner, Joel, Ayala, Ricardo, Vides-Borrell, Eric & Vandame, Rémy, 2024, Revealing the Baja California Peninsula's Hidden Treasures: An Annotated checklist of the native bees (Hymenoptera: Apoidea: Anthophila), pp. 1-391 in Zootaxa 5522 (1) on page 63, DOI: 10.11646/zootaxa.5522.1.1, http://zenodo.org/record/13920532
Development of capillary electrophoretic separation methods for PCR-amplified DNA products
Creators: name: Srinivasan, Kannan
Publisher: name: American University
Year: 2023

description: This research has qualified the utility of capillary electrophoresis (CE) in DNA typing work for human identification and enabled ultra sensitive detection of PCR-amplified DNA fragments. In accomplishing the above goal, various capillaries such as polyacrylamide coated capillaries, polyacrylamide gel-filled capillaries and polysiloxane coated capillaries such as SPB-5 (5% phenyl and 95% methyl groups) and DB-17 (50% phenyl and 50% methyl groups) were evaluated and used in conjunction with several buffers and polymers such as hydroxypropylmethylcellulose, hydroxyethylcellulose and methylcellulose. These studies indicated the suitability of a coated capillary with sieving polymers (polymer network capillaries) for the analysis of PCR-amplified DNA products. The investigations of separation parameters like applied field on the separation efficiency and resolution of PCR-amplified DNA fragments showed that, in general, resolution and efficiency for the larger fragments (greater than 600 basepairs) decreased with increase in applied field. Fitting the data to current migration models confirmed the gradual transition to reptation regime concurrent with similar findings by other groups. The results of the temperature studies showed that efficiency and resolution decreased with increase in temperature, hence, all PCR-amplified dsDNA separations were performed at ambient temperature. Injection studies showed suitability of electrophoretic injection for PCR-amplified dsDNA separations. Smaller injection plugs gave higher efficiency and resolution but compromised detectability of the analyte using UV detection. Investigations on sample preparation prior to analysis by CE showed suitability of an Ultrafree-MC filter unit (Millipore Corp, MA), which had the advantage of speed and recovery. Studies on the use of modifiers like glycerol, chaotropic agents like urea and intercalating agents like ethidium bromide, showed selective improvement in separations especially for dsDNA fragments less than 300 basepairs and were found suited for separations of smaller sized PCR-amplified DNA products. Sensitivity enhancement over UV detection was achieved by the use of two asymmetric cyanine dyes, TOTO and YOYO, coupled with a laser induced fluorescence detection system (LIF). Femtogram quantities of dsDNA were detected by this approach. The resolving power of a polymer network capillary separation system when compared to that of a capillary-gel separation system, clearly confirmed the advantage of using polymer networks for PCR-amplified dsDNA analysis with a CE-LIF system. The overall goal of this project was to enable ultra sensitive detection and high resolution separation of PCR-amplified human DNA fragments from different loci. (Abstract shortened by UMI.).
Toxoplasma gondii infection and risk of attention-deficit hyperactivity disorder: a systematic review and meta-analysis
Creators: name: Tooran Nayeri
name: Shahabeddin Sarvi
name: Moosazadeh, Mahmood
name: Hosseininejad, Zahra
name: Amouei, Afsaneh
name: Daryani, Ahmad
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Medicine
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Toxoplasma gondii (T. gondii), as an opportunistic neurotropic parasite of the Apicomplexa family, was firstly described in 1908. As attention-deficit hyperactivity disorder (ADHD) is one of the most common neuropsychiatric disorders in children and adolescents and often persists into adulthood, the purpose of this systematic review and meta-analysis was to investigate the relationship between T. gondii infection and ADHD.The data were systematically collected from seven electronic databases up to May 1st 2019 with no language restriction. This study was registered at the International Prospective Register of Systematic Reviews (PROSPERO; code: CRD42020149353). Odds ratios (ORs) and 95% confidence intervals (CI) were estimated using a random effects model. Seven studies involving five cross-sectional and two case-control studies were included in this meta-analysis.Results indicated that there was a statistically non-significant association between exposure to T. gondii infection and increased risk of ADHD based on the detection of immunoglobulin G (IgG) antibody (2.02 [95% CI: 0.97-4.20]; I2=58.7%). However, obtained results of Egger’s tests for anti-T. gondii IgG antibody showed publication bias (P=0.014).Sensitivity analysis revealed stable results for the association between anti-T. gondii IgG antibody with ADHD.Given the small number of studies in this field and the obtained results, it cannot be conclusively stated that T. gondii is a risk factor for ADHD.It is important to have reliable information about the relationship between T. gondii and ADHD around the world; as it may lead to better insight to elucidate the possible association of toxoplasmosis and the pathogenesis of ADHD.
Measurement of the Inclusive Charmless Semileptonic Branching Ratio of B Mesons and Determination of |V_ub|
Creators: name: Aubert, B.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We report a measurement of the inclusive charmless semileptonic branching fraction of B mesons in a sample of 89 million BBbar events recorded with the BABAR detector at the Y(4S) resonance. Events are selected by fully reconstructing the decay of one B meson and identifying a charged lepton from the decay of the other B meson. The number of signal events is extracted from the hadronic mass distribution and is used to determine the ratio of branching fractions BR(B->Xulnu)/BR(B->Xlnu) = (2.06 +/-0.25(stat) +/-0.23(syst) +/-0.36(theo)) x 10^{-2}. Using the measured branching fraction for inclusive semileptonic B decays, we find BR(B->Xulnu) = (2.24 +/- 0.27(stat) +/- 0.26(syst) +/- 0.39(theo)) x 10^{-3} and derive the CKM matrix element |Vub| = (4.62 +/- 0.28(stat) +/- 0.27(syst) +/- 0.48 (theo)) x 10^{-3}.
description: Submitted to Phys. Rev. Lett
Decoherent Neutrino Mixing, Dark Energy and Matter-Antimatter Asymmetry
Creators: name: Barenboim, Gabriela
name: Mavromatos, Nick
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A CPT violating decoherence scenario can easily account for all the experimental evidence in the neutrino sector including LSND. In this work it is argued that this framework can also accommodate the Dark Energy content of the Universe, as well as the observed matter-antimatter asymmetry.
description: 6 pages, no figures, some typos corrected, and discussion modified below eq (3), no effects on conclusions
Effects of resolution inhomogeneity in large-eddy simulation
Creators: name: Yalla, Gopal R.
name: Oliver, Todd A.
name: Haering, Sigfried W.
name: Engquist, Björn
name: Moser, Robert D.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Large Eddy Simulation (LES) of turbulence in complex geometries is often conducted using strongly inhomogeneous resolution. The issues associated with resolution inhomogeneity are related to the noncommutativity of the filtering and differentiation operators, which introduces a commutation term into the governing equations. Neglect of this commutation term gives rise to commutation error. While the commutation error is well recognized, it is often ignored in practice. Moreover, the commutation error arising from the implicit part of the filter (i.e., projection onto the underlying discretization) has not been well investigated. Modeling the commutator between numerical projection and differentiation is crucial for correcting errors induced by resolution inhomogeneity in practical LES settings, which typically rely solely on implicit filtering. Here, we employ a multiscale asymptotic analysis to investigate the characteristics of the commutator. This provides a statistical description of the commutator, which can serve as a target for the statistical characteristics of a commutator model. Further, we investigate how commutation error manifests in simulation and demonstrate its impact on the convection of a packet of homogeneous isotropic turbulence through an inhomogeneous grid. A connection is made between the commutation error and the propagation properties of the underlying numerics. A modeling approach for the commutator is proposed that is applicable to LES with filters that include projections to the discrete solution space and that respects the numerical properties of the LES evolution equation. It may also be useful in addressing other LES modeling issues such as discretization error.
description: 27 pages, 9 figures
Large scale inhomogeneity of inertial particles in turbulent flow
Creators: name: Boffetta, G.
name: De Lillo, F.
name: Gamba, A.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Preferential concentration of inertial particles in turbulent flow is studied by high resolution direct numerical simulations of two-dimensional turbulence. The formation of network-like regions of high particle density, characterized by a length scale which depends on the Stokes number of inertial particles, is observed. At smaller scales, the size of empty regions appears to be distributed according to a scaling law.
description: 4 pages, 5 figures
Taste sensitivity in rats with lesions of the thalamic gustatory nucleus
Creators: name: Rentmeister-Bryant, Heike Karla
Publisher: name: American University
Year: 2023

description: Rats trained to detect 100 mM NaCl and 300 mM sucrose received lesions of the thalamic gustatory nucleus (VPMpc) and then were tested for their absolute NaCl and sucrose thresholds. Most rats with small lesions or lesions posterior to VPMpc had excellent retention of the detection tasks and normal thresholds. Those with less than total destruction of VPMpc had poor retention and significantly higher thresholds than controls. Rats with essentially complete lesions of VPMpc had no retention and demonstrated little or no ability to detect these stimuli even after retraining on higher concentrations. These results indicate that VPMpc may play a critical role in the detection of taste stimuli. The results of additional analyses suggest that poor performance of rats with less than total VPMpc lesions is due to a combination of a decrease in taste sensitivity and a decrease in the salience of the taste cue.
Andrena (Scaphandrena) cruciferarum Ribble 1974
Creators: name: Pedro, Diego De
name: Ceccarelli, Fadia Sara
name: Sagot, Philippe
name: López-Reyes, Eulogio
name: Mullins, Jessica L.
name: Mérida-Rivas, Jorge A.
name: Falcon-Brindis, Armando
name: Griswold, Terry
name: Ascher, John S.
name: Gardner, Joel
name: Ayala, Ricardo
name: Vides-Borrell, Eric
name: Vandame, Rémy
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Andrenidae
Andrena
Andrena cruciferarum

description: Andrena (Scaphandrena) cruciferarum Ribble, 1974
[Holotype: CASC; ♀ Riverside, California, US; March 12, 1945]
The first known record of Andrena cruciferarum on BCP was collected in Chaparral habitat to the north of the state in April 1963 and it is vouchered at INHS (GBIF 2023). In our fieldwork, the BBPT collected one female in the Coastal Sage Matorral in Guadalupe Valley in April 2021 (MABC). See fig. 19.
description: Published as part of Pedro, Diego De, Ceccarelli, Fadia Sara, Sagot, Philippe, López-Reyes, Eulogio, Mullins, Jessica L., Mérida-Rivas, Jorge A., Falcon-Brindis, Armando, Griswold, Terry, Ascher, John S., Gardner, Joel, Ayala, Ricardo, Vides-Borrell, Eric & Vandame, Rémy, 2024, Revealing the Baja California Peninsula's Hidden Treasures: An Annotated checklist of the native bees (Hymenoptera: Apoidea: Anthophila), pp. 1-391 in Zootaxa 5522 (1) on page 65, DOI: 10.11646/zootaxa.5522.1.1, http://zenodo.org/record/13920532
Mixed State Geometric Phase from Thomas Rotations
Creators: name: Lévay, Péter
Publisher: name: arXiv
Year: 2003
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: It is shown that Uhlmann's parallel transport of purifications along a path of mixed states represented by $2\times 2$ density matrices is just the path ordered product of Thomas rotations. These rotations are invariant under hyperbolic translations inside the Bloch sphere that can be regarded as the Poincaré ball model of hyperbolic geometry. A general expression for the mixed state geometric phase for an {\it arbitrary} geodesic triangle in terms of the Bures fidelities is derived. The formula gives back the solid angle result well-known from studies of the pure state geometric phase. It is also shown that this mixed state anholonomy can be reinterpreted as the pure state non-Abelian anholonomy of entangled states living in a suitable restriction of the quaternionic Hopf bundle. In this picture Uhlmann's parallel transport is just Pancharatnam transport of quaternionic spinors.
description: 23 pages
Hylaeus (Spatulariella) irritans DATHE 1980
Creators: name: Özbek, Hikmet
name: Dathe, Holger H.
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Colletidae
Hylaeus
Hylaeus irritans

description: Hylaeus (Spatulariella) irritans DATHE, 1980
Fig. 1e
 Hylaeus irritans DATHE, 1980: 94–95, . Iran: Zoshk.
 Prosopis (Spatulariella) alticola WARNCKE, 1981: 162–163, . Iran: Elburs.
 Prosopis (Spatulariella) irritans DATHE, 1980 – WARNCKE 1992: 776.
 Material examined: Ağrı: Eleşkirt, 2200 m, 14.07.1987, , leg. R. Hensen. Erzurum: Köprüköy, 3 km NE of Geyikli, 1700 m, 27.07.2010, , leg. J.S. Ascher, H. Özbek (coll. AMNH). Sivas: İmranlı, 40 km E, 1700 m, 15.07.1984, , leg. A.W. Ebmer.
 Remarks: Like H. iranicus, H. irritans was described by DATHE (1980) from Iran. In Turkey, the species had become known from the provinces Erzincan and Hakkâri. The current study adds three more provinces to the distribution records. It is a mountain species that occurs at 1700–2800 m altitude. We believe that in order to accurately determine the range of this species, further research should be carried out in the mountain regions of the country, especially above 2000 m. It is collected only sparsely in Turkey (5 provinces).
 Distribution: Iran, Turkey: Erzincan, Hakkâri (2000– 2800 m) (DATHE 1980; WARNCKE 1992), Ağrı, Erzurum, Sivas.
description: Published as part of Özbek, Hikmet & Dathe, Holger H., 2020, The bees of the genus Hylaeus FABRICIUS, 1793 of Turkey, with keys to the subgenera and species (Hymenoptera: Anthophila, Colletidae), pp. 273-346 in Beiträge Zur Entomologie = Contributions to Entomology 70 (2) on pages 337-338, DOI: 10.21248/contrib.entomol.70.2.273-346, http://zenodo.org/record/5742898
An infinite square-well potential as a limiting case of a finite square-well potential in a minimal-length scenario
Creators: name: Gonçalves, André Oakes O.
name: Gusson, Michael F.
name: Dilem, Bernardo B.
name: Furtado, Raphael G.
name: Francisco, Ronald O.
name: Fabris, Júlio C.
name: Nogueira, José A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: One of the most widely problem studied in quantum mechanics is of an infinite square-well potential. In a minimal-length scenario its study requires additional care because the boundary conditions at the walls of the well are not well fixed. In order to avoid this we solve the finite square-well potential whose the boundary conditions are well fixed, even in a minimal-length scenario, and then we take the limit of the potential going to infinity to find the eigenfunctions and the energy equation for the infinite square-well potential. Although the first correction for the energy eigenvalues is the same one has been found in the literature, our result shows that the eigenfunctions have the first derivative continuous at the square-well walls what is in disagreement those previous work. That is because in the literature the authors have neglected the hyperbolic solutions and have assumed the discontinuity of the first derivative of the eigenfunctions at the walls of the infinite square-well which is not correct. As we show, the continuity of the first derivative of the eigenfunctions at the square-well walls guarantees the continuity of the probability current density and the unitarity of the time evolution
description: Accepted for publication in the IJMPA
Electromagnetic pulses which have a zero momentum frame
Creators: name: Lekner, John
Publisher: name: arXiv
Year: 2003
Subjects: subject: Optics (physics.optics)
subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: One set of the Ziolkowski family of exact solutions of the wave equation are shown to represent pulses propagating with momentum smaller than energy/c. This is explicitly demonstrated for special cases by calculating the total electromagnetic momentum and energy. Since the ratio of momentum to energy is a constant smaller than 1/c, there exists a Lorentz transformation to a frame in which the total momentum is zero. In the zero-momentum frame the fields are those of an annular pulse converging onto or diverging from a focal region.
description: 10 pages, 2 figures incorporated
Taste sensitivity in rats with lesions of the thalamic gustatory nucleus
Creators: name: Rentmeister-Bryant, Heike Karla
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 52
subject: Psychology
subject: FOS: Psychology

description: Rats trained to detect 100 mM NaCl and 300 mM sucrose received lesions of the thalamic gustatory nucleus (VPMpc) and then were tested for their absolute NaCl and sucrose thresholds. Most rats with small lesions or lesions posterior to VPMpc had excellent retention of the detection tasks and normal thresholds. Those with less than total destruction of VPMpc had poor retention and significantly higher thresholds than controls. Rats with essentially complete lesions of VPMpc had no retention and demonstrated little or no ability to detect these stimuli even after retraining on higher concentrations. These results indicate that VPMpc may play a critical role in the detection of taste stimuli. The results of additional analyses suggest that poor performance of rats with less than total VPMpc lesions is due to a combination of a decrease in taste sensitivity and a decrease in the salience of the taste cue.
Metadynamics of paths
Creators: name: Mandelli, Davide
name: Hirshberg, Barak
name: Parrinello, Michele
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We present a method to sample reactive pathways via biased molecular dynamics simulations in trajectory space. We show that the use of enhanced sampling techniques enables unconstrained exploration of multiple reaction routes. Time correlation functions are conveniently computed via reweighted averages along a single trajectory and kinetic rates are accessed at no additional cost. These abilities are illustrated analyzing a model potential and the umbrella inversion of NH$_3$ in water. The algorithm allows a parallel implementation and promises to be a powerful tool for the study of rare events.
description: Main Text: 5 pages, 5 figures, 7 equations. Supplemental Material: 6 pages, 11 figures, 11 equations
Resonant microwave properties of a voltage-biased single-Cooper-pair transistor
Creators: name: Gorelik, L. Y.
name: Kulinich, S. I.
name: Shekhter, R. I.
name: Jonson, M.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We consider the microwave dynamics and transport properties of a voltage-biased single-Cooper-pair transistor. The dynamics is shown to be strongly affected by interference between multiple microwave-induced inter-level transitions. As a result the magnitude and direction of the dc Josephson current are extremely sensitive to small variations of the bias voltage and to changes in the frequency of the microwave field.
description: 6 pages, 4 figures
Andrena (Scrapteropsis) nigra Provancher 1895
Creators: name: Pedro, Diego De
name: Ceccarelli, Fadia Sara
name: Sagot, Philippe
name: López-Reyes, Eulogio
name: Mullins, Jessica L.
name: Mérida-Rivas, Jorge A.
name: Falcon-Brindis, Armando
name: Griswold, Terry
name: Ascher, John S.
name: Gardner, Joel
name: Ayala, Ricardo
name: Vides-Borrell, Eric
name: Vandame, Rémy
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Andrenidae
Andrena
Andrena nigra

description: Andrena (Scrapteropsis) nigra Provancher, 1895
[Holotype: ULQC; ♀ Los Angeles, California, US]
LaBerge (1977) reports Andrena nigra in the Chaparral of Valle de la Trinidad in BC. Our study contributes an additional record of this species in the Coastal Sage Matorral, collected in March 2022. See fig. 19.
description: Published as part of Pedro, Diego De, Ceccarelli, Fadia Sara, Sagot, Philippe, López-Reyes, Eulogio, Mullins, Jessica L., Mérida-Rivas, Jorge A., Falcon-Brindis, Armando, Griswold, Terry, Ascher, John S., Gardner, Joel, Ayala, Ricardo, Vides-Borrell, Eric & Vandame, Rémy, 2024, Revealing the Baja California Peninsula's Hidden Treasures: An Annotated checklist of the native bees (Hymenoptera: Apoidea: Anthophila), pp. 1-391 in Zootaxa 5522 (1) on page 66, DOI: 10.11646/zootaxa.5522.1.1, http://zenodo.org/record/13920532
Bayesian sequential inference for error rates and error amounts in accounting data
Creators: name: Byekwaso, Serapio
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 49
subject: Mathematical sciences
classificationCode: 4905
subject: Statistics
subject: FOS: Mathematics

description: In the literature about estimating error rates and error amounts in accounting data, a number of observations stand out: (1) The error rates are usually very low, which render many existing statistical procedures inappropriate for estimating and hypothesis testing of error rates and error amounts. (2) The auditors and/or accountants often have a lot of prior information about the data that they would like to incorporate in the estimation process. This renders Bayesian methods attractive to them. (3) Sequential methods would seem appropriate for some of these problems, yet there is a noticeable lack of such methods in the relevant literature. (4) The error amounts in these populations follow nonstandard distributions. In this paper we propose Bayesian sequential inference procedures for error rates and error amounts in accounting data that may be useful in improving the situation. Because computational difficulties arise in evaluating exact densities, normal and beta approximations are given for univariate inference. For joint inference on the error rate and the error amount the exact density is described and a Dirichlet approximation is proposed.
Scaling of local interface width of statistical growth models
Creators: name: Chame, Anna
name: Reis, F. D. A. Aarão
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We discuss the methods to calculate the roughness exponent alpha and the dynamic exponent z from the scaling properties of the local roughness, which is frequently used in the analysis of experimental data. Through numerical simulations, we studied the Family, the restricted solid-on-solid (RSOS), the Das Sarma-Tamborenea (DT) and the Wolf-Villain (WV) models in one- and two dimensional substrates, in order to compare different methods to obtain those exponents. The scaling at small length scales do not give reliable estimates of alpha, suggesting that the usual methods to estimate that exponent from experimental data may provide misleading conclusions concerning the universality classes of the growth processes. On the other hand, we propose a more efficient method to calculate the dynamic exponent z, based on the scaling of characteristic correlation lengths, which gives estimates in good agreement with the expected universality classes and indicates expected crossover behavior. Our results also provide evidence of Edwards-Wilkinson asymptotic behavior for the DT and the WV models in two-dimensional substrates.
description: To appear in Surface Science
Bayesian sequential inference for error rates and error amounts in accounting data
Creators: name: Byekwaso, Serapio
Publisher: name: American University
Year: 2023

description: In the literature about estimating error rates and error amounts in accounting data, a number of observations stand out: (1) The error rates are usually very low, which render many existing statistical procedures inappropriate for estimating and hypothesis testing of error rates and error amounts. (2) The auditors and/or accountants often have a lot of prior information about the data that they would like to incorporate in the estimation process. This renders Bayesian methods attractive to them. (3) Sequential methods would seem appropriate for some of these problems, yet there is a noticeable lack of such methods in the relevant literature. (4) The error amounts in these populations follow nonstandard distributions. In this paper we propose Bayesian sequential inference procedures for error rates and error amounts in accounting data that may be useful in improving the situation. Because computational difficulties arise in evaluating exact densities, normal and beta approximations are given for univariate inference. For joint inference on the error rate and the error amount the exact density is described and a Dirichlet approximation is proposed.
Joint Beam Direction Control and Radio Resource Allocation in Dynamic Multi-beam LEO Satellite Networks
Creators: name: Yuan, Shuo
name: Sun, Yaohua
name: Peng, Mugen
name: Yuan, Renzhi
Publisher: name: arXiv
Year: 2024
Subjects: subject: Information Theory (cs.IT)
subject: Systems and Control (eess.SY)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Multi-beam low earth orbit (LEO) satellites are emerging as key components in beyond 5G and 6G to provide global coverage and high data rate. To fully unleash the potential of LEO satellite communication, resource management plays a key role. However, the uneven distribution of users, the coupling of multi-dimensional resources, complex inter-beam interference, and time-varying network topologies all impose significant challenges on effective communication resource management. In this paper, we study the joint optimization of beam direction and the allocation of spectrum, time, and power resource in a dynamic multi-beam LEO satellite network. The objective is to improve long-term user sum data rate while taking user fairness into account. Since the concerned resource management problem is mixed-integer non-convex programming, the problem is decomposed into three subproblems, namely beam direction control and time slot allocation, user subchannel assignment, and beam power allocation. Then, these subproblems are solved iteratively by leveraging matching with externalities and successive convex approximation, and the proposed algorithms are analyzed in terms of stability, convergence, and complexity. Extensive simulations are conducted, and the results demonstrate that our proposal can improve the number of served users by up to two times and the sum user data rate by up to 68%, compared to baseline schemes.
description: Accepted by IEEE Transactions on Vehicular Technology
Differential absorption lidar measurements of atmospheric water vapor using a pseudonoise code modulated aluminum gallium arsenide laser
Creators: name: Reiley Rall, Jonathan Andrew
Publisher: name: American University
Year: 2023

description: Lidar measurements using pseudonoise code modulated AlGaAs lasers are reported. Horizontal path lidar measurements were made at night to terrestrial targets at ranges of 5 and 13 km with 35 mW of average power and integration times of one second. Cloud and aerosol lidar measurements were made to thin cirrus clouds at 13 km altitude with Rayleigh (molecular) backscatter evident up to 9 km. Average transmitter power was 35 mW and measurement integration time was 20 minutes. An AlGaAs laser was used to characterize spectral properties of water vapor absorption lines at 811.617, 816.024, and 815.769 nm in a multipass absorption cell using derivative spectroscopy techniques. Frequency locking of an AlGaAs laser to a water vapor absorption line was achieved with a laser center frequency stability measured to better than one-fifth of the water vapor Doppler linewidth over several minutes. Differential absorption lidar measurements of atmospheric water vapor were made in both integrated path and range-resolved modes using an externally modulated AlGaAs laser. Mean water vapor number density was estimated from both integrated path and range-resolved DIAL measurements and agreed with measured humidity values to within 6.5% and 20%, respectively. Error sources were identified and their effects on estimates of water vapor number density calculated.
Andrena (Simandrena) pallidifovea Viereck 1904
Creators: name: Pedro, Diego De
name: Ceccarelli, Fadia Sara
name: Sagot, Philippe
name: López-Reyes, Eulogio
name: Mullins, Jessica L.
name: Mérida-Rivas, Jorge A.
name: Falcon-Brindis, Armando
name: Griswold, Terry
name: Ascher, John S.
name: Gardner, Joel
name: Ayala, Ricardo
name: Vides-Borrell, Eric
name: Vandame, Rémy
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Andrenidae
Andrena
Andrena pallidifovea

description: Andrena (Simandrena) pallidifovea Viereck, 1904
[Holotype: ANSP; ♀ Corvallis, Oregon, US; June 4, 1897]
Andrena pallidifovea was first reported by LaBerge (1989) in the Succulent Coastal Matorral of BC. Additionally, we identified a previously undetermined female collected in the Baja California Mountains at El Condor locality in April 1988, and another in the Succulent Coastal Matorral in Colonet in 2017 (SDNHM). The BBPT collected five females of this species in three different localities of the Coastal Sage Matorral in April 2020, June 2020, April 2021, and April 2022 and a last one from the Succulent Coastal Matorral in March 2021 (MABC). See fig. 20.
description: Published as part of Pedro, Diego De, Ceccarelli, Fadia Sara, Sagot, Philippe, López-Reyes, Eulogio, Mullins, Jessica L., Mérida-Rivas, Jorge A., Falcon-Brindis, Armando, Griswold, Terry, Ascher, John S., Gardner, Joel, Ayala, Ricardo, Vides-Borrell, Eric & Vandame, Rémy, 2024, Revealing the Baja California Peninsula's Hidden Treasures: An Annotated checklist of the native bees (Hymenoptera: Apoidea: Anthophila), pp. 1-391 in Zootaxa 5522 (1) on page 67, DOI: 10.11646/zootaxa.5522.1.1, http://zenodo.org/record/13920532
On qualitative properties of single-delay linear retarded differential equations: Characteristic roots of maximal multiplicity are necessarily dominant
Creators: name: Mazanti, Guilherme
name: Boussaada, Islam
name: Niculescu, Silviu-Iulian
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optimization and Control (math.OC)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: This paper presents necessary and sufficient conditions for the existence of a real root of maximal multiplicity in the spectrum of a linear time-invariant single-delay equation of retarded type. We also prove that this root is always strictly dominant, and hence determines the asymptotic behavior of the system. These results are based on improved a priori bounds on the imaginary part of roots on the complex right half-plane.
description: arXiv admin note: text overlap with arXiv:2002.07267
Differential absorption lidar measurements of atmospheric water vapor using a pseudonoise code modulated aluminum gallium arsenide laser
Creators: name: Reiley Rall, Jonathan Andrew
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 51
subject: Physical sciences
subject: FOS: Physical sciences

description: Lidar measurements using pseudonoise code modulated AlGaAs lasers are reported. Horizontal path lidar measurements were made at night to terrestrial targets at ranges of 5 and 13 km with 35 mW of average power and integration times of one second. Cloud and aerosol lidar measurements were made to thin cirrus clouds at 13 km altitude with Rayleigh (molecular) backscatter evident up to 9 km. Average transmitter power was 35 mW and measurement integration time was 20 minutes. An AlGaAs laser was used to characterize spectral properties of water vapor absorption lines at 811.617, 816.024, and 815.769 nm in a multipass absorption cell using derivative spectroscopy techniques. Frequency locking of an AlGaAs laser to a water vapor absorption line was achieved with a laser center frequency stability measured to better than one-fifth of the water vapor Doppler linewidth over several minutes. Differential absorption lidar measurements of atmospheric water vapor were made in both integrated path and range-resolved modes using an externally modulated AlGaAs laser. Mean water vapor number density was estimated from both integrated path and range-resolved DIAL measurements and agreed with measured humidity values to within 6.5% and 20%, respectively. Error sources were identified and their effects on estimates of water vapor number density calculated.
"The play's the thing": The effect of performance-based teaching methodology on student attitudes toward Shakespeare study
Creators: name: O'Brien, Margaret Hoffman
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 39
subject: Education
classificationCode: 3901
subject: Curriculum and pedagogy

description: Though Shakespeare is the dominant author in the American secondary school curriculum, there is no empirical evidence suggesting practical methodologies successful in the teaching of Shakespeare. This study examined the effect of speaking and enacting the text as a successful methodology. Its purpose was to determine whether learning about plays through performance-based methodology influences secondary school students' attitudes positively and significantly, as compared to students who learn Shakespeare through traditional, nonactive classroom methods. Subjects were selected in a two-step process. Fifteen secondary school teachers who did not use dramatic activity but rather traditional nonactive methods in their teaching of Shakespeare were identified by means of a Teacher Screening Questionnaire. Each of these teachers involved one class in the study; these students comprised the control group. Fifteen teachers experienced in the teaching of Shakespeare through performance-based methodology were identified through the Folger Shakespeare Library. These teachers also selected one class for participation in the study; these students made up the experimental group. Six elements of student attitude were identified: overall positive/negative response, sense of mastery, sense of accomplishment, understanding and accessibility of Shakespeare's language, sense of enjoyment, and feelings about future study of Shakespeare. Attitude was measured by a corresponding six-item survey instrument administered before and after the period of Shakespeare study. All subjects completed the pretest. Control group students were taught Shakespeare in the traditional manner while experimental group students received the treatment, a sequence of ten performance-based lessons. Two weeks after completing their Shakespeare study, all subjects completed the post-test. Students who learn Shakespeare by means of active, performance-based methodology have a more positive attitude toward Shakespeare study than do students who learn through traditional methodology. Affected most powerfully and most positively were students' attitudes concerning their own ability to understand Shakespeare's language and to master Shakespeare as a school subject, and their belief that the study of Shakespeare can be enjoyable. This study supports change from traditional nonactive classroom strategies to active, performance-based methodologies in the teaching of Shakespeare and other literature.