cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Determination of the nonlinear optical susceptibility c(2) of surface layers by sum and difference frequency generation in reflection and transmission
Creators: name: Dick, Bernhard
name: Gierulski, A.
name: Marowsky, G.
name: Reider, G. A.
Publisher: name: Universität Regensburg
Year: 1985
Subjects: subject: Optical reflection (by surface layers, nonlinear optical susceptibility in relation to); Laser radiation (harmonic generation of, in thin surface layers, nonlinear optical susceptibility in relation to); Surface (laser radiation harmonic generation on, nonlinear optical susceptibility detn. by); Light (transmission of, by thin surface layers, harmonic generation and nonlinear optical susceptibility in relation to); Optical nonlinear property (susceptibility, of surface layers, laser radiation harmonic generation in detn. of); nonlinear optical susceptibility surface harmonic; harmonic generation surface nonlinear susceptibility
subject: 540 Chemie

description: The theor. investigation of sum and difference frequency generation in thin surface layers with rotational symmetry led to formulas which connected the generated light intensities to the surface 2nd-order nonlinear susceptibility tensor. A max. of 7 tensor components was detd. in the lowest symmetry case. Measurements in transmission were esp. useful since they allowed easy variation of both polarization and angle of incidence. Large signal enhancements are expected for total internal reflection geometries. A consistent set of c(2) tensor components for a thin layer of Rhodamine 6G adsorbed on fused SiO2 was found based on data from reflection and transmission measurements.
description: CAN 103:203354 73-10 Optical, Electron, and Mass Spectroscopy and Other Related Properties 60676-86-0 Role: USES (Uses) (nonlinear optical susceptibility of thin layers of Rhodamine 6G adsorbed on, harmonic generation in detn. of); 989-38-8 Role: PRP (Properties) (nonlinear optical susceptibility of thin layers of, adsorbed on fused silica, laser radiation harmonic generation in detn. of)
Exponential type Nagumo norms and summability of formal solutions of singular partial differential equations
Creators: name: Luo, Zhuangchu
name: Chen, Hua
name: Zhang, Changgui
Publisher: name: arXiv
Year: 2011
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35C20 32D15

description: In this paper, we study a class of first order nonlinear degenerated partial differential equations with singularity at $(t,x)=(0,0)\in \CC^2$. By means of exponential type Nagumo norm approach, Gevrey asymptotic analysis extends to case of holomorphic parameters by a natural way. A sharp condition is then established to deduce the $k$-summability for the formal solutions. Furthermore, analytical solutions in conical domains are found for each type of these nonlinear singular PDEs.
Excitonic fractional quantum Hall hierarchy in Moiré heterostructures
Creators: name: Kwan, Yves H.
name: Hu, Yichen
name: Simon, Steven H.
name: Parameswaran, S. A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We consider fractional quantum Hall states in systems where two flat Chern number $C=\pm 1$ bands are labeled by an approximately conserved 'valley' index and interchanged by time reversal symmetry. At filling factor $ν=1$ this setting admits an unusual hierarchy of correlated phases of excitons, neutral particle-hole pair excitations of a fully valley-polarized `orbital ferromagnet' parent state where all electrons occupy a single valley. Excitons experience an effective magnetic field due to the Chern numbers of the underlying bands. This obstructs their condensation in favor of a variety of crystalline orders and gapped and gapless liquid states. All these have the same quantized charge Hall response and are electrically incompressible, but differ in their edge structure, orbital magnetization, and hence valley and thermal responses. We explore the relevance of this scenario for Moiré heterostructures of bilayer graphene on a hexagonal boron nitride substrate.
description: 5+4 pages, 1+3 figures
Radio studies of galaxy formation: Dense Gas History of the Universe
Creators: name: Carilli, C. L.
name: Walter, F.
name: Riechers, D.
name: Wang, R.
name: Daddi, E.
name: Wagg, J.
name: Bertoldi, F.
name: Menten, K.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Line and continuum studies at centimeter through submillimeter wavelengths address probe deep into the earliest, most active and dust obscured phases of galaxy formation, and reveal the molecular and cool atomic gas. We summarize the techniques of radio astronomy to perform these studies, then review the progress on radio studies of galaxy formation. The dominant work over the last decade has focused on massive, luminous starburst galaxies (submm galaxies and AGN host galaxies). The far infrared luminosities are ~ 1e13 Lsun, implying star formation rates, SFR > 1e3 Msun/year. Molecular gas reservoirs are found with masses: M(H_2) > 1e10 (alpha/0.8}) Msun. The CO excitation in these luminous systems is much higher than in low redshift spiral galaxies. Imaging of the gas distribution and dynamics suggests strongly interacting and merging galaxies, indicating gravitationally induced, short duration (~ 1e7 year) starbursts. These systems correspond to a major star formation episode in massive galaxies in proto-clusters at intermediate to high redshift. Recently, radio observations have probed the more typical star forming galaxy population (SFR ~ 100 Msun/year), during the peak epoch of Universal star formation (z ~ 1.5 to 2.5). These observations reveal massive gas reservoirs without hyper-starbursts, and show that active star formation occurs over a wide range in galaxy stellar mass. The conditions in this gas are comparable to those found in the Milky Way disk. A key result is that the peak epoch of star formation in the Universe also corresponds to an epoch when the baryon content of star forming galaxies was dominated by molecular gas, not stars. We consider the possibility of tracing out the dense gas history of the Universe, and perform initial, admittedly gross, calculations. ABRIDGED
description: aastex format, 21figures, Review for the Astronomische Gesellschaft to appear in Astronomische Nachrichten
title: Risikomanagement im Wandel
title: Zusammenhang von Großereignissen, Gesetzgebung und Umsetzungsstand in Unternehmen in der DACH Region
titleType: Subtitle
Creators: name: Gräber, Pia
Publisher: name: FH Vorarlberg (Fachhochschule Vorarlberg)
Year: 2021
Subjects: subject: 650 Management

description: Das unternehmerische Risikomanagement hat sich in der Vergangenheit und aktuell insbesondere durch die Coronapandemie stetig weiterentwickelt. In der DACH-Region bestehen neben den jeweiligen lokalen Gesellschaftsrechtsgesetzgebungen, welche sich in Umfang und Inhalt unterscheiden, auch internationale Standards, welche zusammen die Rahmenbedingungen für das Risikomanagement bilden. Teilweise wurden diese Gesetzlichen und sonstigen Anforderungen durch bestimmte Ereignisse eingeführt bzw. überarbeitet. Dies spiegelt sich auch im Umsetzungsstands des unternehmerischen Risikomanagements und dessen System in Organisationen wider. Insbesondere auf den Bilanzskandal des Enron-Konzerns 2002 sowie die Finanzkrise 2008 können Änderungen in der Gesetzgebung zum Risikomanagement zurückgeführt werden, welche von den Unternehmen ebenfalls umgesetzt werden. Aktuell werden die gesetzlichen Anforderungen von allen Unternehmen umgesetzt. In der jüngeren Vergangenheit zeigt sich ein positiver Trend von einem compliance-orientierten zu einem performance-orientierten Risikomanagement. Dies bedeutet, dass immer mehr Unternehmen Risikomanagement auch über die gesetzlichen Anforderungen hinaus betreiben und dies so aktiv zur Unternehmenssteuerung beiträgt.
description: Enterprise Risk Management has constantly developed throughout the past and especially due to the current corona health crisis. Besides the respective local corporate laws, which differ by scope and content, there are also international Standards within the DACH-region which provide risk management framework. Enactments and changes concerning these legislative and other requirements can partially be traced back to specific events. This is also reflected in the implementation status of enterprise risk management within organizations. Especially the Enron accounting scandal in 2002 and the financial crisis starting 2008 can be named as background for legislation chances and new enactments. These chances are also considered within enterprise risk management. Currently all organizations meet regulatory requirements. In the recent past, a positive trend shifting from compliance-oriented to performance-oriented risk management can be registered in organizations. This means that the number of companies which use risk management also beyond complying with regulatory requirements and therefore actively for corporate management is growing.
New dihydrobenzofuranoid from the marine-derived fungus Aspergillus ustus KMM 4664
Creators: name: Oleinikova, Galina K.
name: Zhuravleva, Olesya I.
name: Berdyshev, Dmitrii V.
name: Menzorova, Natalia I.
name: Popov, Roman S.
name: Denisenko, Vladimir A.
name: Kirichuk, Natalya N.
name: Afiyatullov, Shamil Sh.
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
subject: Neuroscience
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified

description: One new dihydrobenzofuran derivative (1), known depsipeptide emericellamide A (2), three known drimanes (3–5) and two artifact drimane derivatives (6, 7) were isolated from the marine-derived fungus Aspergillus ustus KMM 4664. Their structures were determined by detailed analysis of spectroscopic data and by comparison with related known compounds. The absolute configuration of 1 was determined by time-dependent density functional theory (TD-DFT) calculations of ECD spectra. Compound 7 showed significant ability of the inhibition of spermatozoa to fertilize egg-cells of the sea urchin Strongylocentrotus intermedius with IC50 value 21 µM.
Kisah sukses : stories of Indonesian migrant worker returnees living in greater Jakarta
Creators: name: Park, Kilim
Publisher: name: University of British Columbia
Year: 2018

description: Based on interviews with Indonesian women migrant workers and informed by their experience living in Greater Jakarta, this dissertation explores how migrant worker returnees view their work experience overseas and how their lives in Asian urban centres affected their life back in the Indonesian urban centre. It focuses on their relationships with the complex notions of "city," that reflect the returnee women's attachment to "home," and their desire to build it in a new space where they have settled. The dissertation also seeks to unfold how the city is represented through their experiences. In telling the stories of the past and present, the women shared their written works, documentary films, and their everyday life experiences to provide a more nuanced understanding of "migration" and "migrant workers." The dissertation explores the returnee women’s interpretations of "Jakarta" and "Indonesia," notions of return, and the idea of an emotionscape.
Au-delà de la répétition
Creators: name: Cocito, Sara
Publisher: name: Trópos
Year: 2024

description: This paper explores Gilles Deleuze’s critique of Sigmund Freud’s concept of repetition, particularly in the context of temporality, habit, and the unconscious. While psychoanalysis links the repetition compulsion to the search for pleasure, the tendency to repeat over and over again a past traumatic experience and, finally, on a deeper lever, the drive to return to an inanimate state, the account given by Deleuze in Difference and Repetition is quite different. On the one hand, repetition surely rules the process of psychic individuations but, on the other hand, it never refers to an empirical object or an actual experience – meaning that there is no habit which is repeated for the purpose of obtaining some pleasure, there is no past experience recurring in the present and, above all, the death drive does not correspond to the human need to go back to a purely material inanimate condition.

This perspective allows Deleuze to reinterpret the unconscious as a dynamic force of questioning and problematization, rather than a mere repository of past experiences. This shifts the understanding of psychic life from one of static repetition to one of perpetual novelty and differentiation, challenging traditional psychoanalytic views and highlighting the continuous generation of newness in human desires and behaviors.
description: Trópos, V. 16 N. 1 (2024): Ermes e Prometeo: sul rapporto possibile tra ermeneutica e filosofia della tecnica
Variable Radio Sources in the Galactic Plane
Creators: name: Becker, Robert H.
name: Helfand, David J.
name: White, Richard L.
name: Proctor, Deanne D.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Using three epochs of VLA observations of the Galactic Plane in the first quadrant taken ~15 years apart, we have conducted a search for a population of variable Galactic radio emitters in the flux density range 1-100 mJy at 6 cm. We find 39 variable sources in a total survey area of 23.2 sq deg. Correcting for various selection effects and for the extragalactic variable population of active galactic nuclei, we conclude there are ~1.6 Galactic sources per sq deg which vary by more than 50% on a time scale of years (or shorter). We show that these sources are much more highly variable than extragalactic objects; more than 50% show variability by a factor >2 compared to <10% for extragalactic objects in the same flux density range. We also show that the fraction of variable sources increases toward the Galactic center (another indication that this is a Galactic population), and that the spectral indices of many of these sources are flat or inverted. A small number of the variables are coincident with mid-IR sources and two are coincident with X-ray emitters, but most have no known counterparts at other wavelengths. Intriguingly, one lies at the center of a supernova remnant, while another appears to be a very compact planetary nebula; several are likely to represent activity associated with star formation regions. We discuss the possible source classes which could contribute to the variable cohort and followup observations which could clarify the nature of these sources.
description: 11 pages, 7 figures; to be published in the Astronomical Journal; data available on MAGPIS website at http://third.ucllnl.org/gps/
A new dammarane type triterpene glucoside from the aerial parts of Gouania longipetala (Rhamnaceae)
Creators: name: Désiré, Soh
name: Ernestine, Nkwengoua
name: Bruno, Tchebemou Bakang
name: Lazare, Sidjui Sidjui
name: Ulrich, Dzo Defokou
name: Lateef, Mehreen
name: Schneider, Bernd
name: Ali, Muhammad Shaiq
name: Barthélemy, Nyassé
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
subject: Genetics
subject: FOS: Biological sciences
subject: Pharmacology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Hematology

description: 3-O-β-D-glucopyranosyl gouanogenin A (1), a new naturally occurring dammarane class of triterpene glucoside, has been isolated from the aerial parts of Gouania longipetala along with six known secondary metabolites 2–7. Their structure was elucidated through spectroscopic data including 1 D- and 2 D-NMR. The compounds 1 and 6 showed significant antioxidant potential in DPPH radical scavenging assay. On the other hand, the compound 4 revealed potent inhibitory potential against the enzyme urease, while 1 and 3 were significantly active.
Saturation of Depth and Polarization of Resonant and Satellite Spectral Holes Generated with Pulsed Laser Excitation
Creators: name: Drescher, Wolfgang
name: Dick, Bernhard
Publisher: name: Universität Regensburg
Year: 1994
Subjects: subject: Photochemistry (in resonant and vibronic satellite spectral holes burning, depth and anisotropy in); Spectral hole burning (of inhomogeneous and isotropic chromophores, photochem., depth and anisotropy of resonant and vibronic satellites in); photochem spectral hole burning depth anisotropy
subject: 540 Chemie

description: The authors consider photochem. hole burning of an inhomogeneous and isotropic ensemble of chromophores through excitation with a narrow-bandwidth source of polarized light. The authors derive expressions for the depth and anisotropy of resonant and vibronic satellite spectral holes with increasing fluence. A fit of these satn. curves to exptl. data yields the Debye-Waller factor of the system. A simple rate equation model predicts that the anisotropy of a spectral hole depends only on the angle between the transition dipoles of the burnt and the probed transitions. In expts. with pulsed lasers strong deviations from this ideal behavior are obsd. An extended theory including satn. gives a satisfactory description of this phenomenon and provides a new method for the detn. of photochem. quantum yields.
description: CAN 120:231572 74-1 Radiation Chemistry, Photochemistry, and Photographic and Other Reprographic Processes 917-23-7 (meso-Tetraphenylporphine) Role: USES (Uses) (photochem. spectral hole burning using PMMA matrix contg., depth and anisotropy of resonant and vibronic satellite holes in); 9011-14-7 (Pmma) Role: USES (Uses) (photochem. spectral hole burning using tetraphenylporphine in, depth and anisotropy of resonant and vibronic satellite holes in)
Amabiloid A from Crinum × amabile Donn ex Ker Gawl
Creators: name: Panthong, Kanda
name: Ingkaninan, Kornkanok
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Biochemistry
subject: Pharmacology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified

description: A new alkaloid, amabiloid A (1) was isolated from Crinum amabile along with eleven known compounds. Their structures were determined by 1D and 2D NMR spectroscopic data. In addition, the acetyl- and butyrylcholinesterase inhibitory activities of the isolated compounds were evaluated.
Two photon spectroscopy of dipole forbidden transitions. III. Experimental determination of two photon absorption spectra including polarization control
Creators: name: Dick, Bernhard
name: Gonska, H.
name: Hohlneicher, Georg
Publisher: name: Universität Regensburg
Year: 1981
Subjects: subject: Photon (adsorption spectra with 2, including color polarization control); Laser radiation (fluorescence induced by, of hydrocarbons); Hydrocarbons, Role: PRP (Properties) (two-photon absorption spectra of, with photon polarization control); Fluorescence (laser-induced, of hydrocarbons); Spectrometers; Ultraviolet and visible spectra (two-photon, including polarization control); two photon spectroscopy polarization control
subject: 540 Chemie

description: A new exptl. technique is described which allows the measurement of 2-photon absorption of luminescent mols. and simultaneously the evaluation of the 2-photon polarization parameter W over a wide spectral range. The resoln. obtained is comparable to conventional UV absorption and polarization spectra. Examples are shown for different types of unsatd. hydrocarbons. The influence of S1 -> Sm excitations and of variations of the profile of the exciting laser pulse are discussed. Careful control of the both the quadratic nature of the 3-photon process and the beam profile is essential to avoid artificial features in wide range 2-photon spectra.
description: CAN 95:159138 73-3 Spectra by Absorption, Emission, Reflection, or Magnetic Resonance, and Other Optical Properties 85-01-8; 91-20-3; 92-52-4; 108-88-3; 120-12-7 Role: PRP (Properties) (two-photon absorption spectra of, with photon polarization control)
Data from monitoring circulating tumor-DNA during surgical treatment in patients with gastrointestinal stromal tumors
Creators: name: Johansson, Gustav
Publisher: name: figshare
Year: 2021
Subjects: subject: 111202 Cancer Diagnosis
subject: FOS: Clinical medicine
subject: 111203 Cancer Genetics
subject: Biomarkers

description: The majority of patients diagnosed with advanced gastrointestinal stromal tumor (GIST) are successfully treated with a combination of surgery and tyrosine kinase inhibitors (TKIs). Here, we utilized a sequencing strategy based on molecular barcodes and developed a GIST-specific panel to monitor tumor-specific and TKI resistance mutations in cell-free DNA. Thirty-two GIST patients were included, and 161 blood plasma samples were collected. Patients were included regardless of their risk category.

Sequencing data can be downloaded from SRA database (PRJNA749711). Provided script "Filter_synth_reads.py" was used to filter reads from synthetic molecules added to the sample as quality control. Samples were then analyzed using unpublished software available upon request. The filtered BAM output file contacting barcode families with three or more members is uploaded in the respective folder and can be visualized using IGV software
Toward Subgraph-Guided Knowledge Graph Question Generation with Graph Neural Networks
Creators: name: Chen, Yu
name: Wu, Lingfei
name: Zaki, Mohammed J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: Knowledge graph (KG) question generation (QG) aims to generate natural language questions from KGs and target answers. Previous works mostly focus on a simple setting which is to generate questions from a single KG triple. In this work, we focus on a more realistic setting where we aim to generate questions from a KG subgraph and target answers. In addition, most of previous works built on either RNN-based or Transformer based models to encode a linearized KG sugraph, which totally discards the explicit structure information of a KG subgraph. To address this issue, we propose to apply a bidirectional Graph2Seq model to encode the KG subgraph. Furthermore, we enhance our RNN decoder with node-level copying mechanism to allow directly copying node attributes from the KG subgraph to the output question. Both automatic and human evaluation results demonstrate that our model achieves new state-of-the-art scores, outperforming existing methods by a significant margin on two QG benchmarks. Experimental results also show that our QG model can consistently benefit the Question Answering (QA) task as a mean of data augmentation.
description: Accepted by TNNLS 2023
Phenomenological Analysis of $pp$ and $\bar{p}p$ Elastic Scattering Data in the Impact Parameter Space
Creators: name: Campos, S. D.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We use an almost model-independent analytical parameterization for $pp$ and $\bar{p}p$ elastic scattering data to analyze the eikonal, profile, and inelastic overlap functions in the impact parameter space. Error propagation in the fit parameters allows estimations of uncertainty regions, improving the geometrical description of the hadron-hadron interaction. Several predictions are shown and, in particular, the prediction for $pp$ inelastic overlap function at $\sqrt{s}=14$ TeV shows the saturation of the Froissart-Martin bound at LHC energies.
description: 15 pages, 16 figures
Impact of early environmental exposures on the mouse gut microbiota and immune responses
Creators: name: Tasnim, Nishat
Publisher: name: University of British Columbia
Year: 2018

description: Gut microbiota assembly begins at birth, and the two key factors that influence the successful transmission of beneficial gut microbes to the infant are the mother and the external environment. The role of the environment in the assembly of the gut microbiota has yet to be elucidated. Global comparisons have revealed a decrease in gut microbiota diversity attributed to Western diets and lifestyle, and sanitation of the living environment. The goal of the study was to determine the importance of early environmental exposures on gut microbiota development and immunoregulation. In order to determine whether early environmental exposures altered the gut microbiome, we simulated three different environments by adding forest soil and urban soil respectively to the cage bedding of two groups of mouse cages and adding no soil to the bedding material of the third group of mouse cages, from birth until weaning and measured the effect of these early-life environmental exposures on gut microbiota, short-chain fatty acid (SCFA) production, and immune responses in neonatal and young adult mice. We hypothesized that early environmental exposures to soils would increase the diversity of the gut microbiota compared to pathogen-free no soil environment and alter colonic immune cell populations associated with changes in local and systemic cytokine production and SCFA profiles. Our findings indicated that the early-life soil exposure transiently altered the richness of the neonatal gut microbiota and contributed 5-9% variation in the bacterial community structure between individuals during early-life and adulthood. These microbiota alterations were associated with altered bacterial metabolite production, increased inflammatory cytokine and chemokine responses, and increased neonatal macrophage stimulation. Early exposure to urban soil specifically increased the of bacterial taxonomic family Clostridiaceae in the infant and mature gut microbiota, and significantly increased production of propionic acid in young adult mice. Taken together, these results supported the hypothesis that early environmental exposures play a role in gut microbiota richness and community composition, SCFA production, and immune responses. The results of this study provide preliminary insights to move forward through future studies on factors that implicate environmental biodiversity and inflammatory disorders through changes in the gut microbiota.
Source code for "Genome-wide analysis of somatic noncoding mutation patterns in cancer"
Creators: name: Dietlein, Felix
name: Wang, Alex B.
name: Fagre, Christian
name: Anran Tang
name: Besselink, Nicolle
name: Cuppen, Edwin
name: Chunliang Li
name: Sunyaev, Shamil R.
name: Neal, James T.
name: Van Allen, Eliezer M.
Publisher: name: Zenodo
Year: 2022
Subjects: cancer
genomics

description: Source code and user manual to execute it for the manuscript "Genome-wide analysis of somatic noncoding mutation patterns in cancer" by Felix Dietlein, Alex B. Wang, Christian Fagre, Anran Tang, Nicolle Besselink, Edwin Cuppen, Chunliang Li, Shamil R. Sunyaev, James T. Neal & Eliezer M. Van Allen.
Scaling of the Higgs Self-coupling and bounds on the Extra Dimension
Creators: name: Cornell, A. S.
name: Liu, Lu-Xin
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this paper we study the one-loop evolution equation of the Higgs quartic coupling $λ$ in the minimal Universal Extra Dimension model, and find that there are certain bounds on the extra dimension due to the singularity and vacuum stability conditions of the Higgs sector. In the range $250GeV \sim {R^{- 1}} \sim 80TeV$ of the compactification radius, we notice that for a given initial value $λ({M_Z})$, there is an upper limit on ${R^{- 1}}$ for a Higgs mass of $183GeV \sim {m_H}({M_Z}) \sim 187GeV$; where any other compactification scales beyond that have been ruled out for theories where the evolution of $λ$ does not develop a Landau pole and become divergent in the whole range (that is, from the electroweak scale to the unification scale). Likewise, in the range of the Higgs mass $152GeV \sim {m_H}({M_Z}) \sim 157GeV$, for an initial value $λ({M_Z})$, we are led to a lower limit on ${R^{- 1}}$; any other compactification scales below that will be ruled out for theories where the evolution of $λ$ does not become negative and destabilize the vacuum between the electroweak scale and the unification scale. For a Higgs mass in the range $157GeV < {m_H}({M_Z}) < 183GeV$, the evolution of $λ$ is finite and the theory is valid in the whole range (from the electroweak scale to the unification scale) for $250GeV \sim {R^{- 1}} \sim 80TeV$.
description: 10 pages, 8 figures
L'ambivalenza emotiva nell'ebraismo mosaico
Creators: name: Arigone, Leonardo
Publisher: name: Trópos
Year: 2024

description: The paper aims to investigate the importance of the psychoanalytic principle of emotional ambivalence towards the father figure on the Jewish religion at the time of Moses. In the first part, the article examines the relationship between Sigmund Freud’s two books Totem und Tabu and Der Mann Moses, which deal with the same subject matter and thus appear to be two chapters of a single piece of writing; yet it is pointed out that this process of fusion between the two texts has as its counterpart the reverse fission movement whereby the work on Moses can be considered as a bipartite volume. In the second part, the paper discusses Freud’s interpretation of the political, ethical and gnoseological set-up of the exodus community, which is governed by respect for authority, goodness and reason; however, following Freud’s account, the article suggests in conclusion that the tribes of Israel certainly revered the firmness of their leader Moses but at the same time hated it.
description: Trópos, V. 16 N. 1 (2024): Ermes e Prometeo: sul rapporto possibile tra ermeneutica e filosofia della tecnica
Absorption and emission spectroscopies of homogeneous and inhomogeneously broadened multilevel systems in strong light fields
Creators: name: Dick, Bernhard
name: Hochstrasser, Robin M.
Publisher: name: Universität Regensburg
Year: 1984
Subjects: subject: Fluorescence (of multilevel systems, in strong light fields); Laser radiation (spectroscopy, of multilevel systems, in strong light fields); Spectrometry (laser, of multilevel systems, in strong light fields); laser spectroscopy multilevel system; absorption spectroscopy multilevel system; emission spectroscopy multilevel system; fluorescence line narrowing multilevel system; Raman strong field multilevel system
subject: 540 Chemie

description: A method is introduced to calc., for a model set of mol. levels, the spectral line shapes expected for a variety of conventional laser expts. including absorption, hole burning, fluorescence line narrowing, and Raman scattering. The method allows the incident laser field to have arbitrary intensity. Furthermore, the effects of model gaussian or lorenzian inhomogeneous distributions are readily incorporated. Earlier results for a 2-level system are easily obtained and new results are presented for inhomogeneously broadened 2- and 3-level systems, and for the effects of pure dephasing on the strong field spectra. The differences between fluorescence and Raman in strong fields, and the effect of strong fields on the spontaneous emission of inhomogeneously broadened transitions were described. Some predictions are made regarding line narrowing expts. in the strong-field limit.
description: CAN 101:201024 73-10 Optical, Electron, and Mass Spectroscopy and Other Related Properties
Implementation of superconductor-ferromagnet-superconductor pi-shifters in superconducting digital and quantum circuits
Creators: name: Feofanov, A. K.
name: Oboznov, V. A.
name: Bol'ginov, V. V.
name: Lisenfeld, J.
name: Poletto, S.
name: Ryazanov, V. V.
name: Rossolenko, A. N.
name: Khabipov, M.
name: Balashov, D.
name: Zorin, A. B.
name: Dmitriev, P. N.
name: Koshelets, V. P.
name: Ustinov, A. V.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The difference between the phases of superconducting order parameter plays in superconducting circuits the role similar to that played by the electrostatic potential difference required to drive a current in conventional circuits. This fundamental property can be altered by inserting in a superconducting circuit a particular type of weak link, the so-called Josephson $π$-junction having inverted current-phase relation and enabling a shift of the phase by $π$. We demonstrate the operation of three superconducting circuits -- two of them are classical and one quantum -- which all utilize such $π$-phase shifters realized using superconductor-ferromagnet-superconductor sandwich technology. The classical circuits are based on single-flux-quantum cells, which are shown to be scalable and compatible with conventional niobium-based superconducting electronics. The quantum circuit is a $π$-phase biased qubit, for which we observe coherent Rabi oscillations and compare the measured coherence time with that of conventional superconducting phase qubits.
description: 14 pages, 4 figures
Purely coclosed G$_{\mathbf2}$-structures on 2-step nilpotent Lie groups
Creators: name: del Barco, Viviana
name: Moroianu, Andrei
name: Raffero, Alberto
Publisher: name: arXiv
Year: 2020
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C15, 22E25, 53C30

description: We consider left-invariant (purely) coclosed G$_2$-structures on 7-dimensional 2-step nilpotent Lie groups. According to the dimension of the commutator subgroup, we obtain various criteria characterizing the Riemannian metrics induced by left-invariant purely coclosed G$_2$-structures. Then, we use them to determine the isomorphism classes of 2-step nilpotent Lie algebras admitting such type of structures. As an intermediate step, we show that every metric on a 2-step nilpotent Lie algebra admitting coclosed G$_2$-structures is induced by one of them. Finally, we use our results to give the explicit description of the metrics induced by purely coclosed G$_2$-structures on 2-step nilpotent Lie algebras with derived algebra of dimension at most two, up to automorphism.
description: 28 pages
Bandwidth limited amplification of 220 fs pulses in xenon monochloride: theoretical and experimental study of temporal and spectral behavior
Creators: name: Dick, Bernhard
name: Szatmari, Sandor
name: Racz, Bela
name: Schaefer, Fritz  P.
Publisher: name: Universität Regensburg
Year: 1987
Subjects: subject: Process optimization (of bandwidth limited amplification of fs pulses by xenon monochloride); Lasers (xenon monochloride amplifier, bandwidth limited amplification of fs pulses in); laser xenon chloride amplifier optimization
subject: 540 Chemie

description: The spectral structure of the gain-profile of XeCl was found to strongly influence the spectral and temporal characteristics of amplified ultrashort light pulses. A simple model was used to numerically study both effects as a function of amplifier length and input pulse energy. The results are in good agreement with expts. With these data, the performance of a XeCl amplifier was optimized for shortest pulse duration with min. distortion.
description: CAN 107:49049 73-10 Optical, Electron, and Mass Spectroscopy and Other Related Properties 55130-03-5 (Xenon monochloride) Role: PRP (Properties) (amplifier, bandwidth limited amplification of fs pulses by)
Universality in Intensity Modulated Photocurrent in Bulk-Heterojunction Polymer Solar Cells
Creators: name: Bag, Monojit
name: Narayan, K. S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We observe a universal feature in the frequency dependence of intensity modulated photocurrent Iph based on studies of a variety of efficient bulk-heterojunction polymer solar cells (BHJ-PSCs). This feature of Iph appears in the form of a local maximum in the 5 kHz < frequency < 10 kHz range and is observed to be largely independent of the external parameters such as modulated light intensity (Lac), wavelength, temperature (T), and external field (EF) over a wide range. Simplistic kinetic models involving carrier generation, recombination and extraction processes are used to interpret the overall essential features of Iph and correlate it to the device parameters.
Dall'Epimeteo dimenticato alla politica di Ermes.
Creators: name: Vignola, Paolo
Publisher: name: Trópos
Year: 2024

description: The paper aims to reconstruct Bernard Stiegler's original perspective on the status and role of technique, which the French philosopher develops in Technics and Time I. The Fault of Epimetheus, paying particular attention to the original work of reinterpretation of the myth of Prometheus and Epimetheus, both in the light of Leroi-Gourhan’s palaeoanthropological analyses, and in function of a deconstruction of the Heideggerian existential analytics. The figure of Epimetheus is thus analysed in its functions of conceptual creation of an unprecedented point of view for philosophical anthropology, i.e. no longer that of the human, nor even that of technique tout court, but of epiphylogenesis as the artificial memory that composes the human organic and the organised inorganic. In this sense, by restoring the most diriment arguments that Stiegler develops in constructing his own perspective, we show how Epimetheus can correspond to what Deleuze and Guattari call the ‘conceptual personae’ of a philosophical theory. Following Stiegler's reworking of the myth, the opportunity is taken to analyse, through the appearance of Hermes, the political function that Stiegler attributes to hermeneutics as the methodological implant of the ‘politics of memory’ announced in Technics and Time I and realised in the pharmacological phase of Stiegler's thought.
description: Trópos, V. 16 N. 1 (2024): Ermes e Prometeo: sul rapporto possibile tra ermeneutica e filosofia della tecnica
Quantum mechanical formalism for biological evolution
Creators: name: Bianconi, Ginestra
name: Rahmede, Christoph
Publisher: name: arXiv
Year: 2010
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: We study the evolution of sexual and asexual populations in general fitness landscapes. We find deep relations between the mathematics of biological evolution and the formalism of quantum mechanics. We give the general structure of the evolution of populations which is in general an off-equilibrium process that can be expressed by path integrals over phylogenies. These phylogenies are sums of linear lineages for asexual populations. For sexual populations instead, each lineage is a tree of branching ratio two and the path integral describing the evolving population is given by a sum over these trees. Finally, we show that the Bose-Einstein and the Fermi-Dirac distributions describe the stationary state of biological populations in simple cases.
description: (8 pages, 2 figures)
Maximizing coverage while ensuring fairness: a tale of conflicting objective
Creators: name: Asudeh, Abolfazl
name: Berger-Wolf, Tanya
name: DasGupta, Bhaskar
name: Sidiropoulos, Anastasios
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computational Complexity (cs.CC)
subject: Computational Geometry (cs.CG)
subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Computer and information sciences
subject: F.2.2
subject: 68W25(Primary) 68W20, 68Q25, 68W40 (Secondary)

description: Ensuring fairness in computational problems has emerged as a $key$ topic during recent years, buoyed by considerations for equitable resource distributions and social justice. It $is$ possible to incorporate fairness in computational problems from several perspectives, such as using optimization, game-theoretic or machine learning frameworks. In this paper we address the problem of incorporation of fairness from a $combinatorial$ $optimization$ perspective. We formulate a combinatorial optimization framework, suitable for analysis by researchers in approximation algorithms and related areas, that incorporates fairness in maximum coverage problems as an interplay between $two$ conflicting objectives. Fairness is imposed in coverage by using coloring constraints that $minimizes$ the discrepancies between number of elements of different colors covered by selected sets; this is in contrast to the usual discrepancy minimization problems studied extensively in the literature where (usually two) colors are $not$ given $a$ $priori$ but need to be selected to minimize the maximum color discrepancy of $each$ individual set. Our main results are a set of randomized and deterministic approximation algorithms that attempts to $simultaneously$ approximate both fairness and coverage in this framework.
description: Revised version, under submission to journal
Importance of initial and final states as intermediate states in two-photon spectroscopy of polar molecules
Creators: name: Dick, Bernhard
name: Hohlneicher, Georg
Publisher: name: Universität Regensburg
Year: 1982
Subjects: subject: Energy level (forbidden, in polar polyene systems, 2-photon transition in relation to); Photon (transition of 2, in polar mols.); Energy level transition (two-photon, of polar mols., mechanism of); two photon transition polar mol
subject: 540 Chemie

description: Two-photon transitions may proceed via a mechanism not involving virtually excited intermediate states. This mechanism may account for the largest contribution to the 2-photon cross section in polar mols. if the dipole moment strongly alters with excitation. Possible consequences for the 2-photon detection of forbidden states in polar polyene systems are discussed.
description: CAN 97:100809 73-1 Optical, Electron, and Mass Spectroscopy and Other Related Properties
Dal parassitismo alla simbiosi.
Creators: name: Valenti, Riccardo
Publisher: name: Trópos
Year: 2024

description: This lecture is a deep dive into the figure of the parasite in Michel Serre’s works. In this context, the parasite’s paradigmatic role illuminates human nature. As Serres asserts, humans naturally exhibit parasitic behaviour: they steal, consume others’ food, and ultimately, live off the efforts of other subjects. However, the real intellectual challenge lies for Serres in understanding that parasitic behaviour is not fixed and has the potential to transform for the better. This is the intriguing proposition that Serres hints at in The Natural Contract. Our contribution concludes with a rigorous commentary on these profound considerations.
description: Trópos, V. 16 N. 1 (2024): Ermes e Prometeo: sul rapporto possibile tra ermeneutica e filosofia della tecnica
CSE Webinar: Overview of the Software Citation Guidance for Authors and Journals by the FORCE11 Software Citation Implementation Working Group
Creators: name: Katz, Daniel S.
name: Chue Hong, Neil P.
name: Stall, Shelley
name: Harrison, Melissa
name: Muench, August
name: Yeston, Jake
Publisher: name: Zenodo
Year: 2022

description: Citing software is developing as a common practice. Journals and editors need consistent guidance to provide authors. In this webinar for the Council of Science Editors (CSE), two of the FORCE11 Software Citation Implementation Working Group co-chairs (Daniel S. Katz and Neil P. Chue Hong) discuss the types of software citation, challenges, and recommended approaches. Panelists (Melissa Harrison, August Muench, and Jake Yeston; moderated by Shelley Stall) also share their own experiences around software citation.
Verifying Tight Logic Programs with anthem and Vampire
Creators: name: Fandinno, Jorge
name: Lifschitz, Vladimir
name: Lühne, Patrick
name: Schaub, Torsten
Publisher: name: arXiv
Year: 2020
Subjects: subject: Logic in Computer Science (cs.LO)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: This paper continues the line of research aimed at investigating the relationship between logic programs and first-order theories. We extend the definition of program completion to programs with input and output in a subset of the input language of the ASP grounder gringo, study the relationship between stable models and completion in this context, and describe preliminary experiments with the use of two software tools, anthem and vampire, for verifying the correctness of programs with input and output. Proofs of theorems are based on a lemma that relates the semantics of programs studied in this paper to stable models of first-order formulas. Under consideration for acceptance in TPLP.
description: Paper submitted to the 36th International Conference on Logic Programming (ICLP 2020), University Of Calabria, Rende (CS), Italy, September 2020, 16 pages (main part), 12 pages (appendix)
Corrigendum to `Orbit closures in the enhanced nilpotent cone', published in Adv. Math. 219 (2008)
Creators: name: Achar, Pramod N.
name: Henderson, Anthony
Publisher: name: arXiv
Year: 2010
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 20G15 (Primary), 14M15, 20C15 (Secondary)

description: In this note, we point out an error in the proof of Theorem 4.7 of [P. Achar and A.~Henderson, `Orbit closures in the enhanced nilpotent cone', Adv. Math. 219 (2008), 27-62], a statement about the existence of affine pavings for fibres of a certain resolution of singularities of an enhanced nilpotent orbit closure. We also give independent proofs of later results that depend on that statement, so all other results of that paper remain valid.
description: 4 pages. The original paper, in a version almost the same as the published version, is arXiv:0712.1079
Productivity of sequences with respect to a given weight function
Creators: name: Dikranjan, Dikran
name: Shakhmatov, Dmitri
name: Spěvák, Jan
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Topology (math.GN)
subject: Functional Analysis (math.FA)
subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: Primary: 22A05, Secondary: 20E05, 40A05, 40A20, 54A20

description: Given a function f: N --> (omega+1)-{0}, we say that a faithfully indexed sequence {a_n: n in N} of elements of a topological group G is: (i) f-Cauchy productive (f-productive) provided that the sequence {prod_{n=0}^m a_n^{z(n)}: m in N} is left Cauchy (converges to some element of G, respectively) for each function z: N --> Z such that |z(n)| <= f(n) for every n in N; (ii) unconditionally f-Cauchy productive (unconditionally f-productive) provided that the sequence {a_{s(n)}: n in N\} is (f\circ s)-Cauchy productive (respectively, (f\circ s)-productive) for every bijection s: N --> N. (Bijections can be replaced by injections here.) We consider the question of existence of (unconditionally) f-productive sequences for a given "weight function" f. We prove that: (1) a Hausdorff group having an f-productive sequence for some f contains a homeomorphic copy of the Cantor set; (2) if a non-discrete group is either locally compact Hausdorff or Weil complete metric, then it contains an unconditionally f-productive sequence for every function f: N--> N; (3) a metric group is NSS if and only if it does not contain an f_omega-Cauchy productive sequence, where f_omega is the function taking the constant value omega. We give an example of an f_omega-productive sequence {a_n: n in N} in a (necessarily non-abelian) separable metric group H with a linear topology and a bijection s: N --> N such that the sequence {prod_{n=0}^m a_{s(n)}: m in N} diverges, thereby answering a question of Dominguez and Tarieladze. Furthermore, we show that H has no unconditionally f_omega-productive sequences. As an application of our results, we resolve negatively a question from C_p(-,G)-theory.