cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Training samples in objective Bayesian model selection
Creators: name: Berger, James O.
name: Pericchi, Luis R.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: 62F03, 62F15 (Primary) 62N03, 62B10, 62F40. (Secondary)

description: Central to several objective approaches to Bayesian model selection is the use of training samples (subsets of the data), so as to allow utilization of improper objective priors. The most common prescription for choosing training samples is to choose them to be as small as possible, subject to yielding proper posteriors; these are called minimal training samples. When data can vary widely in terms of either information content or impact on the improper priors, use of minimal training samples can be inadequate. Important examples include certain cases of discrete data, the presence of censored observations, and certain situations involving linear models and explanatory variables. Such situations require more sophisticated methods of choosing training samples. A variety of such methods are developed in this paper, and successfully applied in challenging situations.
Deuterated hydrogen chemistry: Partition functions, Equilibrium constants and Transition intensities for the H3+ system
Creators: name: Ramanlal, Jayesh
name: Tennyson, Jonathan
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: H3+ and the deuterated isotopomers are thought to play an important role in interstellar chemistry. The partition functions of H3+, D2H+ and D3+ are calculated to a temperature of 800 K by explicitly summing the ab initio determined rotation-vibration energy levels of the respective species. These partition functions are used to calculate the equilibrium constants for nine important reactions in the interstellar medium involving H3+ and its deuterated isotopomers. These equilibrium constants are compared to previously determined experimental and theoretical values. The Einstein A coefficients for the strongest dipole transitions are also calculated.
Phlegmariurus campianus B. Ollg. 2012, comb. nov.
Creators: name: Øllgaard, Benjamin
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Lycopodiopsida
Lycopodiales
Lycopodiaceae
Phlegmariurus
Phlegmariurus campianus

description: Phlegmariurus campianus (B.Øllg.) B.Øllg., comb. nov.
 Basionym: Huperzia campiana Øllgaard (1988: 109).
description: Published as part of Øllgaard, Benjamin, 2012, New combinations in Neotropical Lycopodiaceae, pp. 10-22 in Phytotaxa 57 (1) on page 13, DOI: 10.11646/phytotaxa.57.1.3, http://zenodo.org/record/5061289
Music at Large : Architecture for the Renegade Musician
Creators: name: Cai, Zhong
Publisher: name: The University of British Columbia
Year: 2020

description: The classical music scene in Vancouver is preserved through the Vancouver Symphony Orchestra, as well as the few institutions dedicated to musical learning. Because the VSO reproduces the most recognized and established works of classical music, works of less established composers and musicians do not find their way out through traditional channels. Musicians not employed by the orchestra, dubbed as “Renegade Musicians” in this project, are serious and talented musicians who do not follow the path laid out by the elite institutions. Currently, these musicians rely on busking, or performing in weddings and parties. Unfortunately, these performances and venues do not offer the musicians a legitimate platform for the appreciation of their music, nor do they offer the ideal spatial and acoustic conditions to compliment the musicians’ talents. Combined with Vancouver’s gradual closures of music venues and rehearsal spaces due to rising lease rates, musicians not part of an institution will have greater difficulty developing and performing their work. Music at Large proposes that Renegade Musicians perform to their audience using pop-up stages. These flexible modules can be deployed anywhere with vehicular access. Also, they provide adjustable acoustic panels that accommodates different acoustic needs for performances and practice. Renegade musicians take ownership of their spaces for music, and live music has the potential to appear at every corner of the city.
Complexity in the presence of a boundary
Creators: name: Braccia, Paolo
name: Cotrone, Aldo L.
name: Tonni, Erik
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The effects of a boundary on the circuit complexity are studied in two dimensional theories. The analysis is performed in the holographic realization of a conformal field theory with a boundary by employing different proposals for the dual of the complexity, including the "Complexity = Volume" (CV) and "Complexity = Action" (CA) prescriptions, and in the harmonic chain with Dirichlet boundary conditions. In all the cases considered except for CA, the boundary introduces a subleading logarithmic divergence in the expansion of the complexity as the UV cutoff vanishes. Holographic subregion complexity is also explored in the CV case, finding that it can change discontinuously under continuous variations of the configuration of the subregion.
description: 31 pages, 6 figures
Tunneling exponents in realistic quantum wires using the mean field approximation
Creators: name: Häusler, Wolfgang
name: MacDonald, A. H.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: It is demonstrated that the charge Tomonaga-Luttinger parameter $K_ρ$ of quantum wires can be estimated accurately using the Hartree-Fock approximation if carried out self consistently. The dependence of $K_ρ$ on the carrier density distinguishes different regimes of importance of correlations.
Arteriopatia Cerebral Autossómica Dominante com Enfartes Subcorticais e Leucoencefalopatia (CADASIL) Associada a Atrofia Cerebelosa de Múltiplos Sistemas (MSA)
Creators: name: Nunes, Antônio Mateus Henriques
name: Vanderson Carvalho Néri
name: Rosas, Carolina Maria Leal
name: Ribeiro, Ana Carolina Leite
name: Menezes, Ana Luiza Tavares
name: Ayne Fernandes Sepulveda
Publisher: name: Acta Radiológica Portuguesa
Year: 2021

description: Arteriopatia Cerebral Autossómica Dominante com Enfartes Subcorticais e Leucoencefalopatia (CADASIL) é uma doença genética autossómica dominante ligada a mutações no gene NOTCH3, se manifesta com enfartes cerebrais de pequenos vasos. Atrofia Cerebelosa de Múltiplos Sistemas (MSA) é um grupo de síndromes neurodegenerativas caracterizadas por disfunções autonómicas, anomalias cerebelosas, parkinsonismo e degeneração corticoespinhal. O caso relata uma mulher de 66 anos, que apresentou episódios de alteração do equilíbrio e da marcha, após isquemia cerebral, mantendo episódios de desequilíbrio e lipotimia; marcha atáxica, dismetria e sinais extrapiramidais. Havia antecedentes familiares de doença isquémica do cérebro. Um estudo genético identificou a mutação no gene NOTCH3, na ressonância magnética, foram identificados sinais de microangiopatia periventricular compatíveis com CADASIL e alteração de sinal na ponte, no aspecto cruzado.
description: Acta Radiológica Portuguesa, Vol. 33 N.º 1 (2021): Acta Radiológica Portuguesa
Additional file 1 of TeamMate: a longitudinal study of New Zealand working farm dogs. I. Methods, population characteristics and health on enrolment
Creators: name: Isaksen, Katja
name: Linney, Lori
name: Williamson, Helen
name: Cave, Nick
name: Ngaio Beausoleil
name: Norman, Elizabeth
name: Cogger, Naomi
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Developmental Biology
subject: Science Policy
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Additional file 1: All questionnaires used to collect data for TeamMate during the first to fifth data collection rounds.
Influences of neutron star parameters on evolutions of different types of pulsar; evolutions of anomalous X-ray pulsars, soft gamma repeaters and dim isolated thermal neutron stars on the P-P diagram
Creators: name: Guseinov, Oktay H.
name: Ankay, Askin
name: Tagieva, Sevinc O.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Influences of the mass, moment of inertia, rotation, absence of stability in the atmosphere and some other parameters of neutron stars on the evolution of pulsars are examined. It is shown that the locations and evolutions of soft gamma repeaters, anomalous X-ray pulsars and other types of pulsar on the period versus period derivative diagram can be explained adopting values of B$<10^{14}$ G for these objects. This approach gives the possibility to explain many properties of different types of pulsar.
description: 18 pages, 1 figure
Phlegmariurus chiricanus B. Ollg. 2012, comb. nov.
Creators: name: Øllgaard, Benjamin
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Lycopodiopsida
Lycopodiales
Lycopodiaceae
Phlegmariurus
Phlegmariurus chiricanus

description: Phlegmariurus chiricanus (Maxon) B.Øllg., comb. nov.
 Basionym: Lycopodium chiricanum Maxon (1913: 176).
 Synonym: Huperzia chiricana (Maxon) Holub (1985: 71).
description: Published as part of Øllgaard, Benjamin, 2012, New combinations in Neotropical Lycopodiaceae, pp. 10-22 in Phytotaxa 57 (1) on page 13, DOI: 10.11646/phytotaxa.57.1.3, http://zenodo.org/record/5061289
A Possible Proof Of The Riemann Hypothesis
Creators: name: KAPLAN, Yunus-Emre
Publisher: name: Zenodo
Year: 2025
Subjects: Riemann Hypothesis
Asymptotic Analysis
Prime Numbers
Imbricated Quadratic Equations
Integrals
Zeta Function
Eta Function
Taylor Expansion

description: In this paper, I present my approach to the Riemann Hypothesis, which potentially provides elements for a proof of it, or even an actual proof.

I start by simplifying the equality Eta(s)=0 (which is implied by the nullness of the continued Zeta(s)) by expressing |Eta(s)|^2=0 as Re(Eta(s))^2 + Im(Eta(s))^2 = 0, expressed with cosine and sine functions, then I use trigonometric identities to further break down the sum into a sum of squares purely relying on Re(s) and a double sum relying on both Re(s) and Im(s).

Using the bounded nature of the cosine function, I reformulate the equality as a problem of quadratic equations, to get rid of the dependence on Im(s) as well as the oscillations it induces,

I then consider Re(s) as a map a[n] = Re(s[n]) (n being the number of terms in Zeta(s) or Eta(s)), rather than a fixed value (since we deal with infinity),

It has already been proved that for all the nontrivial zeros, their real part is in ]0,1[,

So, I then use integrals and asymptotic analysis to observe three cases of asymptotic behaviours:

when a[n] converges to a real number in ]0,1/2[

when a[n] converges to a real number in ]1/2,1[

when a[n] converges to 1/2 (where we distinguish some more cases)

Then I conclude that the only logically consistent case is when a[n] converges to 1/2.

NOTE:

I made corrections again, I re-included the part where I deal with infinite orders of expansion, it actually works very well, and there's a wonderful plot twist:

It is actually the imaginary part Im(s) that is a map with a convergence rate, the real part is plainly Re(s)=1/2.

I keep making corrections (and thus new versions) as I spot errors, ambiguous expressions and incomplete statements.

In this version, I corrected a statement about the building of epsilon_n in the Taylor expansion of order p in the last a_n->1/2 part, and added at the end of the paper that the lambda in the 1/2 case is the Euler-Mascheroni constant gamma 𝛾∼0.5772156649.

I'm not far from the final version (I hope).

Feedback would be appreciated at: emrekaplan1978@gmail.com

Despite the quite consequent number of downloads, I've received no feedback so far, positive or negative, despite my email address being public.So a review would really be most welcomed.
Realistic split fermion models
Creators: name: Grossman, Yuval
name: Perez, Gilad
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The standard model flavor structure can be explained in theories where the fermions are localized on different points in a compact extra dimension. We explain how models with two bulk scalars compactified on an orbifold can produce such separations in a natural way. We show that, generically, models of Gaussian overlaps are unnatural since they require very large Yukawa couplings between the fermions and the bulk scalars. We present a two scalar model that accounts naturally for the quark flavor parameters and in particular yields order one CP violating phase.
description: 4 pages 1 figure. Talk presented by Gilad Perez at PASCOS '03, 9th International Symposium on Particles, Strings and Cosmology, January 2003, Mumbai, India
A Possible Proof Of The Riemann Hypothesis
Creators: name: KAPLAN, Yunus-Emre
Publisher: name: Zenodo
Year: 2025
Subjects: Riemann Hypothesis
Asymptotic Analysis
Prime Numbers
Imbricated Quadratic Equations
Integrals
Zeta Function
Eta Function
Taylor Expansion

description: This study is my approach to the Riemann Hypothesis, which potentially provides elements for a proof of it, or even an actual proof.

I start by breaking down the equality Eta(s)=0 (which is implied by the nullness of the continued Zeta(s)) by expressing |Eta(s)|^2=0 as Re(Eta(s))^2 + Im(Eta(s))^2 = 0, expressed with cosine and sine functions, then I use trigonometric identities to further break down the sum into a sum of squares purely relying on Re(s) and a double sum relying on both Re(s) and Im(s).

Using the bounded nature of the cosine function, I reformulate the equality as a problem of quadratic equations, to get rid of the dependence on Im(s) as well as the oscillations it induces,

I then consider Re(s) as a map a[n] tending to a real number (n being the number of terms in Zeta(s) or Eta(s)), rather than a fixed value (since we deal with infinity),

It has already been proved that for all the nontrivial zeros, their real part is in ]0,1[,

So, I then use integrals and asymptotic analysis to observe three cases of asymptotic behaviours:

when a[n] converges to a real number in ]0,1/2[

when a[n] converges to a real number in ]1/2,1[

when a[n] converges to 1/2

Then I conclude that the only logically consistent case is when a[n] converges to 1/2.

Actually, I even find that the real part has to be 1/2 all the way, and that it is actually the imaginary part that is a converging map.

NOTES: 

I made big corrections in this version, in the previous versions even though I had mentioned the alternative method of approximating with integrals first and expanding last, I used expanding first-integrate last instead; it actually works fine for lim a[n] in ]0,1/2] but that raises a problem for lim a[n] > 1/2.

So I used the integrate first-expand last method for both lim a[n] != 1/2 cases, and the expand first-integrate last for the lim a[n] = 1/2 case only, to clarify that the lambda in this precise case is the Euler-Mascheroni constant noted as a gamma 𝛾∼0.5772156649.

I keep making corrections (and thus new versions) as I spot errors, ambiguous expressions and incomplete statements.

I'm not far from the final version (I hope).

Feedback would be appreciated at: emrekaplan1978@gmail.com

Despite the quite consequent number of downloads, I've received no feedback so far, positive or negative, despite my email address being public.So a review would really be most welcomed.
Additional file 2 of Revisiting the trajectory of medical students’ empathy, and impact of gender, specialty preferences and nationality: a systematic review
Creators: name: Andersen, Freja
name: Ann-Sofie Johansen
name: Søndergaard, Jens
name: Andersen, Christina
name: Hvidt, Elisabeth Assing
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: Additional file 2. Methodological quality assessment of the included studies. Above each table the type of quality assessment tool is indicated. In the first table (with overview of the longitudinal studies) the criterions appear in the left column and for each included study there is answered “yes” or “no” to these criterions. In the second table (with overview of the cross-sectional studies) the studies appear in the left column and the criteria items in the first row of the table. The quality assessment tool here is indicated with 0, 0.5 or 1 point per item. The total score is indicated in the right column.
Electrically tunable chiral Majorana edge modes in quantum anomalous Hall insulator-topological superconductor systems
Creators: name: Yan, Qing
name: Zhou, Yan-Feng
name: Sun, Qing-Feng
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Chiral Majorana edge modes are theoretically proposed to perform braiding operations for the potential quantum computation. Here, we suggest a scheme to regulate trajectories of the chiral Majorana fermion based on a quantum anomalous Hall insulator (QAHI)-topological superconductor heterostructure. An applied external gate voltage to the QAHI region introduces a dynamical phase so that the outgoing Majorana fermions can be prominently tuned to different leads. The trajectory is mechanically analyzed and the electrical manipulation is represented by the oscillating transmission coefficients versus the gate voltage. Through the optimization of devices, the conductance is likewise detectable to be periodically oscillating, which means an experimental control of chiral Majorana edge modes. Besides, this oscillating period which is robust against disorder also provides an attainable method of observing the energy dispersion relation of the edge mode of the QAHI. Furthermore, the oscillating behavior of conductance serves as smoking-gun evidence of the existence of the chiral Majorana fermion, which could be experimentally confirmed.
description: 14 pages, 11 figures
Simulating Star Clusters Across Cosmic Time: II. Escape Fraction of Ionizing Photons from Molecular Clouds
Creators: name: He, Chong-Chong
name: Ricotti, Massimo
name: Geen, Sam
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We calculate the hydrogen and helium-ionizing radiation escaping star-forming molecular clouds, as a function of the star cluster mass and compactness, using a set of high-resolution radiation-magneto-hydrodynamic simulations of star formation in self-gravitating, turbulent molecular clouds. In these simulations, presented in He, Ricotti and Geen (2019), the formation of individual massive stars are well resolved, and their UV radiation feedback and lifetime on the main sequence are modeled self-consistently. We find that the escape fraction of ionizing radiation from molecular clouds, $\langle f_{\rm esc}^{\scriptscriptstyle \rm MC}\rangle$, decreases with increasing mass of the star cluster and with decreasing compactness. Molecular clouds with densities typically found in the local Universe have negligible $\langle f_{\rm esc}^{\scriptscriptstyle \rm MC}\rangle$, ranging between $0.5\%$ to $5\%$. Ten times denser molecular clouds have $\langle f_{\rm esc}^{\scriptscriptstyle \rm MC}\rangle \approx 10\%-20\%$, while $100\times$ denser clouds, which produce globular cluster progenitors, have $\langle f_{\rm esc}^{\scriptscriptstyle \rm MC}\rangle \approx 20\%-60\%$. We find that $\langle f_{\rm esc}^{\scriptscriptstyle \rm MC}\rangle$ increases with decreasing gas metallicity, even when ignoring dust extinction, due to stronger radiation feedback. However, the total number of escaping ionizing photons decreases with decreasing metallicity because the star formation efficiency is reduced. We conclude that the sources of reionization at $z>6$ must have been very compact star clusters forming in molecular clouds about $100\times$ denser than in today's Universe, which leads to a significant production of old globular clusters progenitors.
description: 17 pages, 13 figures, accepted for publication in MNRAS
Monitoring Diffusion of Reptating Polymer Chains by Direct Energy Transfer Method: a Monte Carlo Simulation
Creators: name: Tuzel, Erkan
name: Kisacikoglu, K. Batuhan
name: Pekcan, Onder
Publisher: name: arXiv
Year: 2003
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: A kinetic Monte Carlo method was used to simulate the diffusion of reptating polymer chains across the interface. A time-resolved fluorescence technique conjunction with direct energy transfer method was used to measure the extend of diffusion of dye labeled reptating polymer chains. The diffusion of donor and acceptor labeled polymer chains between adjacent compartments was randomly generated. The fluorescence decay profiles of donor molecules were simulated at several diffusion steps to produce mixing of the polymer chains. Mixing ratios of donor and acceptor labeled polymer chains in compartments were measured at various stages (snapshots) of diffusion. It was observed that for a given molecular weight, the average interpenetration contour length was found to be proportional to the mixing ratio. Monte Carlo analysis showed that curvilinear diffusion coefficient is inversely proportional to the weight of polymer chains during diffusion.
description: RevTeX, 9 pages, multicolumn, including 10 figures
A Possible Proof Of The Riemann Hypothesis
Creators: name: KAPLAN, Yunus-Emre
Publisher: name: Zenodo
Year: 2025
Subjects: Riemann Hypothesis
Asymptotic Analysis
Prime Numbers
Imbricated Quadratic Equations
Integrals
Zeta Function
Eta Function
Taylor Expansion

description: This study is my approach to the Riemann Hypothesis, which potentially provides elements for a proof of it, or even an actual proof.

I start by breaking down the equality Eta(s)=0 (which is implied by the nullness of the continued Zeta(s)) by expressing |Eta(s)|^2=0 as Re(Eta(s))^2 + Im(Eta(s))^2 = 0, expressed with cosine and sine functions, then I use trigonometric identities to further break down the sum into a sum of squares purely relying on Re(s) and a double sum relying on both Re(s) and Im(s).

Using the bounded nature of the cosine function, I reformulate the equality as a problem of quadratic equations, to get rid of the dependence on Im(s) as well as the oscillations it induces,

I then consider Re(s) as a map a[n] of complex numbers tending to a real number (n being the number of terms in Zeta(s) or Eta(s)), rather than a fixed value (since we deal with infinity),

It has already been proved that for all the nontrivial zeros, their real part is in ]0,1[,

So, I then use integrals and asymptotic analysis to observe three cases of asymptotic behaviours:

when a[n] converges to a real number in ]0,1/2[

when a[n] converges to a real number in ]1/2,1[

when a[n] converges to 1/2

Then I conclude that the only logically consistent case is when a[n] converges to 1/2.

Actually, I even find that the real part has to be 1/2 all the way, and that it is actually the imaginary part that has a rate of convergence.

NOTES: 

In this version, in the part with the quadratic equations, I clarified the reasons that allowed me to substitute r[n] by its asymptotic equivalent, which I hadn't done before, and I apologize for it.

I hade made big corrections in the last two precedent versions, in the versions prior to those, even though I had mentioned the alternative method of approximating with integrals first and expanding last, I used expand-first-integrate-last approach instead; it actually works fine for lim a[n] in ]0,1/2] but that raises a problem for lim a[n] > 1/2.

So I used the integrate-first-expand-last method for both of the cases where lim a[n] != 1/2, and the expand-first-integrate-last for the lim a[n] = 1/2 case only, to make explicit that the lambda in this precise case is the Euler-Mascheroni constant noted as a gamma 𝛾∼0.5772156649.

I keep making corrections (and thus new versions) as I spot errors, ambiguous expressions and incomplete statements.

I'm not far from the final version (I hope).

Feedback would be appreciated at: emrekaplan1978@gmail.com

Despite the quite consequent number of downloads, I've received no feedback so far, positive or negative, despite my email address being public.So a review would really be most welcomed.
Exponentially Localized Solutions of Mel'nikov Equation
Creators: name: Kumar, C. Senthil
name: Radha, R.
name: Lakshmanan, M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: The Mel'nikov equation is a (2+1) dimensional nonlinear evolution equation admitting boomeron type solutions. In this paper, after showing that it satisfies the Painlevé property, we obtain exponentially localized dromion type solutions from the bilinearized version which have not been reported so far. We also obtain more general dromion type solutions with spatially varying amplitude as well as induced multi-dromion solutions.
description: 12 pages, 2 figures, to appear in Chaos, Solitons and Fractals
Rooftop Refuge : an architectural oasis for mental health
Creators: name: Mak, Helen Cherk Wing
Publisher: name: The University of British Columbia
Year: 2020

description: Mental health is a vital aspect of one’s well-being that deeply infiltrates all facets of one’s life. Therefore, those afflicted with mental illness can experience significant distress, hardship, and even debilitating stigma. As mental health increasingly emerges at the forefront of medical discussions, architectural mindsets of the past need to dramatically alter as well. Architectural design principles coalesced with unprecedented remediation methods can inventively configure an environment which bolsters healing and promotes mental health. Situated in the bustling downtown Vancouver, elevated on the top of a parking garage, the complex of buildings interspersed throughout a garden imagines a new, reinvigorating atmosphere.
Controllability of degenerate parabolic equation with memory
Creators: name: Allal, Brahim
name: Fragnelli, Genni
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optimization and Control (math.OC)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35K65, 45K05, 93C05, 93B05

description: In this paper, we analyze the null controllability property for a degenerate parabolic equation involving memory terms with a locally distributed control. We first derive a null controllability result for a nonhomogeneous degenerate heat equation via new Carleman estimates with weighted time functions that do not blow up at t= 0. Then this result is successfully used with a classical fixed point to obtain null controllability for the initial memory system.
description: 29 pages
A Possible Proof Of The Riemann Hypothesis
Creators: name: KAPLAN, Yunus-Emre
Publisher: name: Zenodo
Year: 2025
Subjects: Riemann Hypothesis
Asymptotic Analysis
Prime Numbers
Imbricated Quadratic Equations
Integrals
Zeta Function
Eta Function
Taylor Expansion

description: This study is my approach to the Riemann Hypothesis, which potentially provides elements for a proof of it, or even an actual proof.

I start by breaking down the equality Eta(s)=0 (which is implied by the nullness of the continued Zeta(s)) by expressing |Eta(s)|^2=0 as Re(Eta(s))^2 + Im(Eta(s))^2 = 0, expressed with cosine and sine functions, then I use trigonometric identities to further break down the sum into a sum of squares purely relying on Re(s) and a double sum relying on both Re(s) and Im(s).

Using the bounded nature of the cosine function, I reformulate the equality as a problem of quadratic equations, to get rid of the dependence on Im(s) as well as the oscillations it induces,

I then consider Re(s) as a map a[n] of complex numbers tending to a real number (n being the number of terms in Zeta(s) or Eta(s)), rather than a fixed value (since we deal with infinity),

It has already been proved that for all the nontrivial zeros, their real part is in ]0,1[,

So, I then use integrals and asymptotic analysis to observe three cases of asymptotic behaviours:

when a[n] converges to a real number in ]0,1/2[

when a[n] converges to a real number in ]1/2,1[

when a[n] converges to 1/2

Then I conclude that the only logically consistent case is when a[n] converges to 1/2.

Actually, I even find that the real part has to be 1/2 all the way, and that it is actually the imaginary part that has a rate of convergence.

NOTES: 

In this version, I "straightened up" many statements that I deemed ambiguous and incomplete.

In the previous version, in the part with the quadratic equations, I clarified the reasons that allowed me to substitute r[n] by its asymptotic equivalent, which I hadn't done before, and I apologize for it.

I made many changes in the versions before on the way I handle Taylor expansions; in the versions prior to those, even though I had mentioned the alternative method of approximating with integrals first and expanding last, I used expand-first-integrate-last approach instead; it actually works fine for lim a[n] in ]0,1/2] but that raises a problem for lim a[n] > 1/2.

So I used the integrate-first-expand-last method for both of the cases where lim a[n] != 1/2, and the expand-first-integrate-last for the lim a[n] = 1/2 case only, to make explicit that the lambda in this precise case is the Euler-Mascheroni constant noted as a gamma 𝛾∼0.5772156649.

I keep making corrections (and thus new versions) as I spot errors, ambiguous expressions and incomplete statements.

I'm not far from the final version (I hope).

Feedback would be appreciated at: emrekaplan1978@gmail.com

Despite the quite consequent number of downloads, I've received no feedback so far, positive or negative, despite my email address being public.So a review would really be most welcomed.
Editorial - Educação Social
Creators: name: Pappamikail, Lia
name: Delgado, Luísa
Publisher: name: Interacções
Year: 2021

description: O número temático Educação Social: diálogos entre a formação e a profissionalidade surge num momento de encruzilhada do processo de institucionalização e consolidação da Educação Social em Portugal, tal como noutros contextos europeus. Não sendo um campo profissional novo é, quando comparado com outras profissões que habitam o campo do trabalho social, ainda recente. Sendo firmes algumas das suas bases disciplinares e os seus compromissos programáticos, a Educação Social permanece atravessada por uma pluralidade de saberes e orientações metodológicas que tornam as suas fronteiras permeáveis e difusas – o que constitui, na nossa perspetiva, tanto um desafio como uma oportunidade. Implicada na reposta social e educativa aos problemas e desafios colocados pelas sociedades contemporâneas, transforma-se e é transformada pelos contextos, conjunturas e estruturas. É, portanto, um campo em permanente (re) configuração, aquele que, no momento atual, se propõe olhar para o futuro e identificar dialogicamente prioridades e caminhos. Este número surge, pois, da necessidade de colocar em diálogo o campo da formação e o da profissionalidade, perscrutando pontes e vazios, desafios e oportunidades, conquistas e fracassos. Reúne um conjunto de contributos, de pendor mais teórico-reflexivo uns, de carater mais empírico, outros, de autores com um percurso profissional ligado à formação superior de educadores sociais (sejam eles próprios educadores sociais ou não) e/ou ao movimento associativo. Conta ainda com o contributo de uma educadora social em exercício. Trata-se de um diálogo que atravessa fronteiras, contando este número com dois textos de autores espanhóis.
description: Interacções, Vol. 17 N.º 56 (2021): Educação Social: Diálogos entre a formação e a profissionalidade
Could dark energy be measured in the lab?
Creators: name: Beck, Christian
name: Mackey, Michael C.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The experimentally measured spectral density of current noise in Josephson junctions provides direct evidence for the existence of zero-point fluctuations. Assuming that the total vacuum energy associated with these fluctuations cannot exceed the presently measured dark energy of the universe, we predict an upper cutoff frequency of nu_c=(1.69 +- 0.05) x 10^12 Hz for the measured frequency spectrum of zero-point fluctuations in the Josephson junction. The largest frequencies that have been reached in the experiments are of the same order of magnitude as nu_c and provide a lower bound on the dark energy density of the universe. It is shown that suppressed zero-point fluctuations above a given cutoff frequency can lead to 1/f noise. We propose an experiment which may help to measure some of the properties of dark energy in the lab.
description: Replaced by final version accepted by Phys. Lett. B. 5 pages, 1 figure. additional text on the physical interpretation of the measured noise spectrum in Fig.1, more references added, Title has slightly changed
Phlegmariurus ciliolatus B. Ollg. 2012, comb. nov.
Creators: name: Øllgaard, Benjamin
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Lycopodiopsida
Lycopodiales
Lycopodiaceae
Phlegmariurus
Phlegmariurus ciliolatus

description: Phlegmariurus ciliolatus (B.Øllg.) B.Øllg., comb. nov.
 Basionym: Huperzia ciliolata Øllgaard (2004: 31).
description: Published as part of Øllgaard, Benjamin, 2012, New combinations in Neotropical Lycopodiaceae, pp. 10-22 in Phytotaxa 57 (1) on page 13, DOI: 10.11646/phytotaxa.57.1.3, http://zenodo.org/record/5061289
Point-contact tunneling involving low-dimensional spin-triplet superconductors
Creators: name: Bolech, C. J.
name: Giamarchi, T.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We modify and extend previous microscopic calculations of tunneling in superconducting junctions based on a non-equilibrium Green function formalism to include the case of spin-triplet pairing. We show that distinctive features are present in the I-V characteristics of different kinds of junctions, in particular when the effects of magnetic fields are taken into account, that permit to identify the type of pairing. We discuss the relevance of these results in the context of quasi one-dimensional organic superconductors like (TMTSF)_2(PF_6) and layered compounds like Sr_2RuO_4.
description: 4 pages, 1 figure
Additional file 1 of Revisiting the trajectory of medical students’ empathy, and impact of gender, specialty preferences and nationality: a systematic review
Creators: name: Andersen, Freja
name: Ann-Sofie Johansen
name: Søndergaard, Jens
name: Andersen, Christina
name: Hvidt, Elisabeth Assing
Publisher: name: figshare
Year: 2020
Subjects: subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Science Policy
subject: Computational Biology

description: Additional file 1. Search protocol. Overview of the search strategy employed in the following databases PubMed, Embase and PsycINFO.
Kermitops So 2025, gen. nov.
Creators: name: So, Calvin
name: Pardo, Jason D.
name: Mann, Arjan
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Amphibia
Temnospondyli
Branchiosauridae
Kermitops

description: Kermitops So et al. gen. nov.
Diagnosis: As for type and only species (see below).
Zoobank LSID: urn:lsid:zoobank.org:act: E22A475F-A2C2- 4060-BC9E-CD32D90E394C.
description: Published as part of So, Calvin, Pardo, Jason D. & Mann, Arjan, 2025, A new amphibamiform from the Early Permian of Texas elucidates patterns of cranial diversity among terrestrial amphibamiforms, pp. 1-15 in Zoological Journal of the Linnean Society 203 (1) on page 2, DOI: 10.1093/zoolinnean/zlae012, http://zenodo.org/record/14850115
Phlegmariurus cleefianus B. Ollg. 2012, comb. nov.
Creators: name: Øllgaard, Benjamin
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Lycopodiopsida
Lycopodiales
Lycopodiaceae
Phlegmariurus
Phlegmariurus cleefianus

description: Phlegmariurus cleefianus (B.Øllg.) B.Øllg., comb. nov.
 Basionym: Huperzia cleefiana Øllgaard (2004: 34).
description: Published as part of Øllgaard, Benjamin, 2012, New combinations in Neotropical Lycopodiaceae, pp. 10-22 in Phytotaxa 57 (1) on page 13, DOI: 10.11646/phytotaxa.57.1.3, http://zenodo.org/record/5061289
Light sterile neutrinos: the current picture from neutrino oscillations
Creators: name: Gariazzo, S.
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Light sterile neutrinos with a mass around 1 eV have been studied for many years as a possible explanation of the so called short-baseline neutrino oscillation anomalies. Recently, several neutrino oscillation experiments reported preferences for non-zero values of the mixing angles and squared mass differences for active-sterile mixing, which however are not always in agreement. I will review our current knowledge on the light sterile neutrino in the 3+1 model, starting with a separate discussion on the status of the most relevant searches and then analyzing the problems that arise when combining different probes in a global fit.
description: To appear in the Proceedings of TAUP 2019, Toyama, Japan, September 9-13, 2019. arXiv admin note: substantial text overlap with arXiv:1910.13172
QCD sum rule analysis of the coupling constants g_{ρηγ} and g_{ωηγ}
Creators: name: Aydin, C.
name: Yilmaz, A. H.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The coupling constants g$_{ρηγ}$ and g$_{ωηγ}$ are calculated using QCD sum rules method by studying the three point ${ρηγ}$ and ${ωηγ}$ correlation functions. A comparison of the results with the values of the coupling constants that are deduced from the experimentally measured decay widths of $ρ\to ηγ$ and $ω\to ηγ$ decays is performed.
description: 8 LateX pages, 5 ps figures
The Influence of the Second Harmonic in the Current-Phase Relation on the Voltage-Current Characteristic of high TC DC SQUID
Creators: name: Greenberg, Ya. S.
name: Novikov, I. L.
name: Schultze, V.
name: Meyer, H. -G.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: A theory for the voltage-current characteristic in high TC DC SQUIDs, which accounts for a second harmonic in the junction current-phase relation, is developed. The comparison with experiment is performed. It is shown that if the second harmonic is prevailed, the theory can explain the large deviations of the experimental voltage modulation from theoretical predictions and computer simulations based on conventional sinusoidal current-phase relation.
description: Eq. 13 is corrected
Monte Carlo errors with less errors
Creators: name: Wolff, Ulli
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: We explain in detail how to estimate mean values and assess statistical errors for arbitrary functions of elementary observables in Monte Carlo simulations. The method is to estimate and sum the relevant autocorrelation functions, which is argued to produce more certain error estimates than binning techniques and hence to help toward a better exploitation of expensive simulations. An effective integrated autocorrelation time is computed which is suitable to benchmark efficiencies of simulation algorithms with regard to specific observables of interest. A Matlab code is offered for download that implements the method. It can also combine independent runs (replica) allowing to judge their consistency.
description: 22 pages, 4 figures, link-address for software download, V4: Improvement in eq.(58) and (42) for error of tau_int => new version of software.Only subleading error terms affected, results should remain compatible
Revisiting Majorana Neutrino Textures in the Light of Dark LMA
Creators: name: Borgohain, Happy
name: Borah, Debasish
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the possibility of texture zeros in Majorana light neutrino mass matrix in the light of dark large mixing angle (DLMA) solution to solar neutrino problem where solar mixing angle ($\sin^2{θ_{12}}\simeq 0.7 $) lies in the second octant instead of first octant in standard large mixing angle (LMA) scenario ($\sin^2{θ_{12}}\simeq 0.3 $). In three neutrino scenario, we find that LMA and DLMA solutions lead to different set of allowed and disallowed textures with one and two zeros. While being consistent with existing bounds from neutrino oscillation data, neutrinoless double beta decay and cosmology these allowed textures also lead to interesting correlations among light neutrino parameters which can distinguish LMA from DLMA solution. We also check the implications for texture zeros in $3+1$ neutrino scenario using both LMA and DLMA solutions. While LMA and DLMA solutions do not play decisive role in ruling out texture zeros in this case, they do give rise to distinct predictions and correlations between light neutrino parameters.
description: 37 pages, 10 figures, Journal accepted version
COMPUTATIONAL FLUID DYNAMICS BASED DESIGN AND INVESTIGATION OF NOSE CONE AERODYNAMICS OF FORMULA STYLE STUDENT DESIGNED RACECAR
Creators: name: Shrish Shukla
Publisher: name: figshare
Year: 2021
Subjects: subject: Mechanical Engineering
subject: FOS: Mechanical engineering

description: In this paper, we present the computational aerodynamics investigation of the nose cone of a Formula Society of Automotive Engineers (FSAE) car. The present work emphasizes on the effect of nose cone design o on the vehicle aerodynamics. The key objective is to minimize the air resistance and obtain significant downforce for better acceleration and traction. The nose-cone shapes inspired from rocketry are selected as viable design options for this study. These shapes are modified based on formula car specifications, tip height, ground clearance and chassis dimensions. The computational study is carried out using the Reynolds-averaged-Navier-Stokes (RANS) turbulence modelling approach with k-epsilon model. Results are presented for the nose-cone geometry variation at certain wind flow conditions. It is concluded that LD Haack-based profile comes out as the best among the alternatives studied. The study tries to demonstrate a method for the geometry selection for aerodynamic features of the car to obtain design efficacy for desired effects by introducing geometric modifications, thus, significantly reducing the air resistance and improve the vehicle aerodynamics.
A high-order integral equation-based solver for the time-dependent Schrodinger equation
Creators: name: Kaye, Jason
name: Barnett, Alex
name: Greengard, Leslie
Publisher: name: arXiv
Year: 2020
Subjects: subject: Numerical Analysis (math.NA)
subject: Quantum Physics (quant-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We introduce a numerical method for the solution of the time-dependent Schrodinger equation with a smooth potential, based on its reformulation as a Volterra integral equation. We present versions of the method both for periodic boundary conditions, and for free space problems with compactly supported initial data and potential. A spatially uniform electric field may be included, making the solver applicable to simulations of light-matter interaction. The primary computational challenge in using the Volterra formulation is the application of a space-time history dependent integral operator. This may be accomplished by projecting the solution onto a set of Fourier modes, and updating their coefficients from one time step to the next by a simple recurrence. In the periodic case, the modes are those of the usual Fourier series, and the fast Fourier transform (FFT) is used to alternate between physical and frequency domain grids. In the free space case, the oscillatory behavior of the spectral Green's function leads us to use a set of complex-frequency Fourier modes obtained by discretizing a contour deformation of the inverse Fourier transform, and we develop a corresponding fast transform based on the FFT. Our approach is related to pseudo-spectral methods, but applied to an integral rather than the usual differential formulation. This has several advantages: it avoids the need for artificial boundary conditions, admits simple, inexpensive high-order implicit time marching schemes, and naturally includes time-dependent potentials. We present examples in one and two dimensions showing spectral accuracy in space and eighth-order accuracy in time for both periodic and free space problems.
description: 38 pages, 11 figures
Phlegmariurus colanensis B. Ollg. 2012, comb. nov.
Creators: name: Øllgaard, Benjamin
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Lycopodiopsida
Lycopodiales
Lycopodiaceae
Phlegmariurus
Phlegmariurus colanensis

description: Phlegmariurus colanensis (B.Øllg.) B.Øllg., comb. nov.
 Basionym: Huperzia colanensis Øllgaard (1994: 31).
description: Published as part of Øllgaard, Benjamin, 2012, New combinations in Neotropical Lycopodiaceae, pp. 10-22 in Phytotaxa 57 (1) on page 13, DOI: 10.11646/phytotaxa.57.1.3, http://zenodo.org/record/5061289
title: Debris flow monitoring using load cells and pressure sensors on Sakura-jima Island
Creators: name: Itoh, Takahiro
name: Fujimura, Naoki
name: Katou, Hitoshi
name: Tagata, Satoshi
name: Mizuyama, Takahisa
Publisher: name: Mountain Scholar
Year: 2019
Subjects: debris flow
DFLP
Sakura-jima
loadcell
sediment concentration
specific weight

description: Numerous debris flows have recently taken place frequently in Sakura-jima Island located at southwest in Japan due to rainfall events after ash deposition due to volcanic activities since 2010. Debris-flow measurement system with loadcell and pressure sensor (DFLP) had been applied for debris-flow monitoring (Osaka et al., 2014). In present study, a modified monitoring DELP system using load cells and a stainless-steel plate is employed. Mass density and sediment concentration are calculated using data obtained by the DFLP system and data measured by ultrasonic level meter and surface velocity by of image analyses of CCTV camera. (Results) Temporal changes of specific weight, sediment concentration and sediment volume of debris-flow in Nojiri and Arimura Rivers in 2014 were well measured using DFLP system. Sediment concentration and specific weight were calculated in both rivers, and there are at least 10 data in Arimura River and 8 data in Nojiri River for calculations of temporal changes of mass density and sediment concentration since 2012 and 2014, respectively. Averaged sediment concentration near peak discharge are calculated as 0.441 in Arimura River and 0.279 in Nojiri River, respectively. However, values of calculated concentration do not always take correlation with rainfall depth before debris-flow occurrences. Data analyses continuously need by more data collections of debris- flow events.