cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The electric dipole moment of the tau lepton revisited
Creators: name: Bernreuther, Werner
name: Chen, Long
name: Nachtmann, Otto
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We reconsider the issue of the search for a nonzero electric dipole form factor (EDM) $d_τ(s)$ using optimal observables in $τ^+τ^-$ production by $e^+ e^-$ collisions in the center-of-mass energy range from the $τ$-pair threshold to about $\sqrt{s} \sim 15$ GeV. We discuss the general formalism of optimal observables and apply it to two $CP$-odd observables that are sensitive to the real and imaginary part of $d_τ(s)$, respectively. We compute the expectation values and covariances of these optimal $CP$ observables for $τ$-pair production at $\sqrt{s}=10.58$ GeV with subsequent decays of $τ^\pm$ into major leptonic or semihadronic modes. For the $τ$ decays to two pions and three charged pions we take the full kinematic information of the hadronic system into account. Assuming that the Belle II experiment at the KEKB accelerator will eventually analyze data corresponding to an integrated luminosity of 50 ab$^{-1}$ and applying acceptance cuts on the final-state pions we find that 1~s.d. sensitivities $δ{\rm Re} d_τ= 6.8 \times 10^{-20}$ e cm and $δ{\rm} Im d_τ= 4.0 \times 10^{-20}$ e cm can be obtained with events where both $τ$'s decay semihadronically. In the ideal case where no cuts on the final-state particles are applied we find with 50 ab$^{-1}$ at $\sqrt{s}=10.58$ GeV corresponding to $4.5 \times 10^{10}$ $τ^+ τ^-$ events the 1 s.d. sensitivities $δ{\rm Re} d_τ= 5.8 \times 10^{-20}$ e cm and $δ{\rm} Im d_τ= 3.2 \times 10^{-20}$ e cm, again for events where both $τ$ leptons decay semihadronically. Furthermore, we analyze the potential magnitude of the $τ$ EDM form factor in the type-II two-Higgs doublet extension and in two scalar leptoquark extensions of the Standard Model.
description: Two tables, one figure, and references added. Version to be published in Phys. Rev. D
Measurement of the eta and etaprime transition form factors at q^2=112 GeV^2
Creators: name: The BABAR Collaboration
name: Aubert, B.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We report a study of the processes e+e- -> eta gamma and e+e- -> etaprime gamma at a center-of-mass energy of 10.58 GeV, using a 232 fb^-1 data sample collected with the BABAR detector at the PEP-II collider at SLAC. We observe 20+6-5 eta gamma and 50+8-7 etaprime gamma events over small backgrounds, and measure the cross sections sigma(e+e- -> eta gamma) =4.5+1.2-1.1(stat)+-0.3(sys) fb and sigma(e+e- -> etaprime gamma)=5.4+-0.8(stat)+-0.3(sys) fb. The corresponding transition form factors at q^2 = 112 GeV^2 are q^2|F_eta(q^2)|=0.229+-0.030+-0.008 GeV, and q^2|F_etaprime(q^2)|=0.251+-0.019+-0.008 GeV, respectively.
description: 15 pages, 22 postscript figues, submitted to Phys. Rev. D
The second Yamabe invariant
Creators: name: Ammann, Bernd
name: Humbert, Emmanuel
Publisher: name: arXiv
Year: 2005
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53A30, 35J60 (Primary) 35P30, 58J50, 58C40 (Secondary)

description: Let $(M,g)$ be a compact Riemannian manifold of dimension $n \geq 3$. We define the second Yamabe invariant as the infimum of the second eigenvalue of the Yamabe operator over the metrics conformal to $g$ and of volume 1. We study when it is attained. As an application, we find nodal solutions of the Yamabe equation.
Open system dynamics from thermodynamic compatibility
Creators: name: Dann, Roie
name: Kosloff, Ronnie
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Thermodynamics entails a set of mathematical conditions on quantum Markovian dynamics. In particular, strict energy conservation between the system and environment implies that the dissipative dynamical map commutes with the unitary system propagator. Employing spectral analysis we prove the general form of the ensuing master equation. We compare this result to master equations obtained from standard microscopic derivations. The obtained formal structure can be employed to test the compatibility of approximate derivations with thermodynamics. For example, it designates that global master equations are the compatible choice. The axiomatic approach sheds light on the validity of the secular approximation in microscopic derivations, the form of the steady state in heat transport phenomena, and indicates the lack of exceptional points in the dynamics of open quantum systems.
Drawing of oxynitride glass fibers
Creators: name: Kaplan-Dietrich, Hannelore
name: Frischat, Günther Heinz
Publisher: name: Offenbach : Verlag der Deutschen Glastechnischen Gesellschaft
Year: 1997
Subjects: subject: 660

description: Glass fibers were drawn from three MgO-Al₂O₃-Y₂O₃-SiO₂-based oxynitride glass melts. Α single-hole bushing process was used to spin the melts containing nitrogen contents between about 13 and 16at.%. The drawing process is described in detail, and it is shown that besides melt viscosity the high surface tension of the oxynitride glass melts strongly controls the fiberization. Thi s is analyzed in terms of Reynolds and Weber numbers. Glass fibers up to a length of about 30 cm can be drawn for Reynolds numbers between about O.Ol and 0.2 and Weber numbers between about 2.6 and 3.1, however, even there the fiber diameter oscillates to some extent. For smaller Reynolds and Weber numbers it is impossible to draw fibers at all. In this instability regime only droplets leave the nozzle outlet. The oxynitride fibers obtained have excellent mechanical properties and a high chemical resistance to alkaline attack.
High-Energy Scattering in Non-Commutative Field Theory
Creators: name: Kumar, Jason
name: Rajaraman, Arvind
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We analyze high energy scattering for non-commutative field theories using the dual gravity description. We find that the Froissart-Martin bound still holds, but that cross-sections stretch in the non-commutative directions in a way dependent on the infrared cutoff. This puzzling behavior suggests new aspects of UV/IR mixing.
description: 17 pages, LaTeX. Citations added
Excimer lasers - a novel tool for material fine and microprocessing of glasses
Creators: name: Pfeufer, Volker
Publisher: name: Offenbach : Verlag der Deutschen Glastechnischen Gesellschaft
Year: 1997
Subjects: subject: 660

description: Over the last 15 years, the laser has evolved to become a key technology because of quality, flexibility and cost effectiveness that it can provide. There is scarcely another technology which is more suited for material fme and microprocessing. Industrial laser applications include cutting, drilling, welding, soldering, marking, trimming, coating, alloying, annealing, hardening, lithography, etc. Each year thousands of laser Systems for material processing are installed worldwide. Also into glass industry the laser has found access. Standard laser applications in this field are: cutting quartz tubes; scribing quartz tubes and plates; scribing (drinking) glasses with subsequent thermal blast-off of the upper part; sealing glass casings containing electronic circuits (transponders); marking quartz glasses, bulbs and flasks, dyed or coated drinking glasses, cups, etc.; marking, cutting and drilling diamonds. Despite these examples the number of actual laser applicaüons in the glass industry is limited, and behind each of these applications there are only a few producing Systems. The manufacturers of lasers for material processing do not even accomplish 1 % of their turnover with the glass industry Reasons for the minor role of the laser in this industry can be found in the features of CO₂ and N d : YAG lasers, which are the lasers mainly applied up to now.
The Genuine Type-V Seesaw Model: Phenomenological Introduction
Creators: name: Ashanujjaman, Saiyad
name: Ghosh, Kirtiman
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study a model which generates Majorana neutrino masses at tree-level via low-energy effective operator with mass-dimension-9. Introduction of such a higher dimensional operator brings down the lepton number violating mass scale to TeV making such model potentially testable at present or near future colliders. This model possesses several new $SU(2)_L$ fermionic multiplets, in particular, three generations of triplets, quadruplets and quintuplets, and thus a rich phenomenology at the LHC. As the lepton flavour violation arises very naturally in such setup, we put constraints on the Yukawa couplings and heavy fermion masses from the current experimental bounds on lepton flavour violating processes. We also obtain 95% CL lower bounds on the masses of the triplets, quadruplets and quintuplets using a recent CMS search for multilepton final states with 137 inverse femtobarn integrated luminosity data at 13 TeV center of mass energy. The possibility that the heavy fermions could be long-lived leaving disappearing charge track signatures or displaced vertex at the future colliders like LHeC, FCC-he, MATHUSLA, etc. is also discussed.
description: 56 pages
Neuner, Peter, Geeint im Leben - getrennt im Bekenntnis?
Creators: name: Schmitt, Michael
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 39 Nr. 1 (1990): Ökumenische Rundschau, Band 39, Heft 1
Harnessing and control of optical rogue waves in supercontinuum generation
Creators: name: Dudley, John. M.
name: Genty, Goery
name: Eggleton, Benjamin J.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We present a numerical study of the evolution dynamics of ``optical rogue waves'', statistically-rare extreme red-shifted soliton pulses arising from supercontinuum generation in photonic crystal fiber [D. R. Solli et al. Nature Vol. 450, 1054-1058 (2007)]. Our specific aim is to use nonlinear Schrodinger equation simulations to identify ways in which the rogue wave dynamics can be actively controlled, and we demonstrate that rogue wave generation can be enhanced by an order of magnitude through a small modulation across the input pulse envelope and effectively suppressed through the use of a sliding frequency filter.
description: Submitted for Publication (2008)
Chromic oxide blocks for use in the container glass industry
Creators: name: Boymanns, Gerda
name: Gebhardt, Franz
name: Georenz, Edmund
Publisher: name: Offenbach : Verlag der Deutschen Glastechnischen Gesellschaft
Year: 1997
Subjects: subject: 660

description: Large parts of the tank superstructure of soda - lime - silica glass melters for the production of Hat and container glass are mostly lined with fused-cast AZS blocks today These linings are standind about 8 to 10 years. However, from pracdcal experience it is well-known that certain furnace areas such as doghouse corners, weirs, throat assemblies etc. are prone to progressive corrosion. In order to eliminate these shortcomings by providing cost-effective Solutions, isostatically pressed and sintered chromic oxide blocks were tested successfully for use in soda - lime - silica glass furnaces. Questions concerning the corrosion behaviour, the colouradon of the glass and the formation of Chromate are discussed.
Dynamic marketing decisions in the presence of perishable demand
Creators: name: Swami, Sanjeev
Publisher: name: University of British Columbia
Year: 2009

description: This thesis seeks to advance our understanding of how quantitative models can be developed and applied to marketing in complex dynamic environments characterized by demand perishability. Specifically, it involves three essays on the dynamic shelf-space management of movies. The problem is particularly complex for exhibitors - the retailers in the motion picture supply chain - given the short life cycles of movies, their perishable and uncertain demand, and complicated contracts. Our objective is to understand, formalize, and develop optimal normative policies for such decision making situations. Essay 1 considers this problem from a theoretical standpoint by addressing the stochastic aspects of movie replacement, which is analogous to equipment replacement in maintenance theory. We formulate this problem as a Markov decision process model. A scenario analysis reveals that the exhibitor is better off when shelf-space becomes scarcer for the distributors. A smart exhibitor associates a cost with contract parameters and bears it if it makes economic sense. The results underscore the importance of precise information for making smart replacement decisions. The optimal policy under special conditions resembles a control limit policy, which is easy to implement and compute. Essay 2 applies the theoretical concepts developed in Essay 1 to a special case of the movie replacement problem. The output of this essay is SilverScreener, which is a decision support model for movie exhibitors. The model helps the exhibitors both select (which) and schedule (when, how long) the movies. The model is readily implementable and appears to lead to considerable improvement in profitability in different comparative cases. The general nature of optimal policy emerges as: choose fewer "right" movies and run them longer. The robustness of the results is shown through sensitivity analyses. Essay 3 proposes a two-tier application of the SilverScreener model to show its effectiveness as a managerial aid. The master plan helps the manager in bidding and planning for movies before a season. The rolling horizon approach is useful for weekly replacement decisions during the season. Our results show that SilverScreener can improve the manager's profitability and promises to be an effective scheduling and planning tool.
Mass number dependence of the Skyrme-force-induced nuclear symmetry energy
Creators: name: Rafalski, M.
name: Satula, W.
name: Wyss, R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The global mass dependence of the nuclear symmetry energy and its two basic ingredients due to the mean-level spacing and effective strength of the isovector mean-potential is studied within the Skyrme-Hartree-Fock model. In particular, our study determines the ratio of the surface-to-volume contributions to the nuclear symmetry energy to be ~1.6 and reveals that contributions due to mean-level spacing and effective strength of the isovector mean-potential are almost equal after removing momentum-dependent effects by rescaling them with isoscalar and isovector effective masses, respectively.
description: Presented at the XII Nuclear Physics Workshop, Kazimierz Dolny, Poland, September 21-25, 2005
Study of the high-temperature spectral behavior of container glass
Creators: name: Endrýs, Jiří
name: Geotti-Bianchini, Franco
name: De Riu, Luca
Publisher: name: Offenbach : Verlag der Deutschen Glastechnischen Gesellschaft
Year: 1997
Subjects: subject: 660

description: The spectral absorption coefficients of container glasses in the wavelength region from 0.4 to 4.5 µm and in the temperature range from room temperature to 1400 °C were measured by a single-beam spectrophotometer by means of the transmission method. From the measured absorption coefficients radiative thermal conductivities in the temperature ränge from 600 to 1400 °C were calculated by means of Rosseland's diffusion approximation. The intensity of the band at 2.8 µm due to dissolved hydroxyl groups in glass was also calculated. While most previous measurements were performed on model glasses with a very simple basic composition, molten in laboratory furnaces from pure raw materials, the glasses investigated in this paper are the most frequently used types of container glasses with a complex composition and different chromophores. The influence of different coloring agents and dissolved water on the spectral behavior and radiative thermal conductivity of glass were studied, checking how the spectra change from room temperature to high temperature.
Aligning Form to Purpose: Meaningful Public Engagement From the Open Science Perspective
Creators: name: Anne-Floor Scholvinck
Publisher: name: Zenodo
Year: 2022

description: Open Science is an attempt to make science contribute more to tackling major societal challenges. To achieve this grand ambition, public stakeholders and citizens should be involved with science in a meaningful way. We have examined 1) when public engagement can be considered meaningful and, 2) how it can be organised.

 Although there is not one optimal way to involve the public meaningfully, this does not mean that any public engagement is by definition meaningful. Our research culminates in the position that public involvement is meaningful when the (power) relationship between knowledge producers and stakeholders changes in favour of the latter. This means that for public engagement to be meaningful, its form must fit well with its aim; the purpose of engaging the public suggests who should be engaged, where, when, and how. Additionally, we present five directives to help policymakers and researchers design processes of meaningful public engagement.
Does Crowdfunding Really Foster Innovation? Evidence from the Board Game Industry
Creators: name: Wachs, Johannes
name: Vedres, Balazs
Publisher: name: arXiv
Year: 2021
Subjects: subject: Social and Information Networks (cs.SI)
subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: Crowdfunding offers inventors and entrepreneurs alternative access to resources with which they can develop and realize their ideas. Besides helping to secure capital, crowdfunding also connects creators with engaged early supporters who provide public feedback. But does this process foster truly innovative outcomes? Does the proliferation of crowdfunding in an industry make it more innovative overall? Prior studies investigating the link between crowdfunding and innovation do not compare traditional and crowdfunded products and so while claims that crowdfunding supports innovation are theoretically sound, they lack empirical backing. We address this gap using a unique dataset of board games, an industry with significant crowdfunding activity in recent years. Each game is described by how it combines fundamental mechanisms such as dice-rolling, negotiation, and resource-management, from which we develop quantitative measures of innovation in game design. Using these measures to compare games, we find that crowdfunded games tend to be more distinctive from previous games than their traditionally published counterparts. They are also significantly more likely to implement novel combinations of mechanisms. Crowdfunded games are not just transient experiments: subsequent games imitate their novel ideas. These results hold in regression models controlling for game and designer-level confounders. Our findings demonstrate that the innovative potential of crowdfunding goes beyond individual products to entire industries, as new ideas spill over to traditionally funded products.
Sticking temperature investigations of glass/metal contacts Determination of influencing parameters
Creators: name: Falipou, Marc
name: Donnet, Christophe
name: Maréchal, François
name: Charenton, Jean-Claude
Publisher: name: Offenbach : Verlag der Deutschen Glastechnischen Gesellschaft
Year: 1997
Subjects: subject: 660

description: Sticking experiments between hot viscous glass and metallic Substrates have been performed with a glass press apparatus on a laboratory scale, allowing a precise determination of the sticking temperatures, Ts, versus selected experimental parameters (nature of the Substrate, composition of the glass). Complementary surface analyses have also been carried out to identify the surface and interface reaction products following the glass/metal contact. Experimental results have been compared to ternary phase diagrams, in order to test the reliability of thermodynamic calculations to predict the nature of the phases produced by the contact at high temperature. The sticking phenomenon is governed by a coupling between the rheological behaviour of the glass melt and the physicochemical reactivity of the contacting surfaces. Sticking occurs when the temperature at the interface remains sufficiently high, so that the glass viscosity remains low enough to enhance the real contact area and thus, to induce physicochemical interactions between Substrate and glass. Sticking is attributed to the presence of an interfacial oxide layer which strongly adheres onto the glass. Chemical analysis of the sticking surfaces identifies a physicochemical driving force contributing to the sticking phenomenon. The predominant reaction consists in the reduction of the sodium oxide of the glass at the expense of the oxidation of the metallic elements of the Substrate during pressing, in agreement with thermochemical calculations presented by the ternary phase diagrams. The strong chemical reactivity of the soda-lime-silica glass is thus attributed in particular to the highly reactive sodium oxide constituent.
A new class of fossil fragments from the hierarchical assembly of the Galactic bulge
Creators: name: Ferraro, F. R.
name: Pallanca, C.
name: Lanzoni, B.
name: Crociati, C.
name: Dalessandro, E.
name: Origlia, L.
name: Rich, R. M.
name: Saracino, S.
name: Mucciarelli, A.
name: Valenti, E.
name: Geisler, D.
name: Mauro, F.
name: Villanova, S.
name: Bidin, C. Moni
name: Beccari, G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The formation and evolutionary processes of galaxy bulges are still unclear, and the presence of young stars in the bulge of the Milky Way is largely debated. We recently demonstrated that Terzan 5, in the Galactic bulge, is a complex stellar system hosting stars with very different ages and a striking chemical similarity to the field population. This indicates that its progenitor was likely one of the giant structures that are thought to generate bulges through coalescence. Here we show that another globular cluster-like system in the bulge (Liller 1) hosts two distinct stellar populations with remarkably different ages: only 1-3 Gyr for the youngest, 12 Gyr for the oldest, which is impressively similar to the old component of Terzan 5. This discovery classifies Liller 1 and Terzan 5 as sites of recent star formation in the Galactic bulge and provides clear observational proof that the hierarchical assembly of primordial massive structures contributed to the formation of the Milky Way spheroid.
description: 29 pages, 10 figures, typo in author affiliation fixed, published in Nature Astronomy
A Ten-Year Investigation on Ozone and It Precursors at Kemaman, Terengganu, Malaysia
Creators: name: Marzuki Ismail
name: Samsuri Abdullah
name: Fong Si Yuen
name: Ghazali, Nurul Adyani
Publisher: name: Thai Society of Higher Education Institutes on Environment
Year: 2016
Subjects: ground level ozone,solar radiation intensity,diurnal cycle,oxidant,Kemaman

description: 1, 9, EnvironmentAsia
Angursa abyssalis Renaud-Mornant 1981
Creators: name: Trokhymchuk, Roman
name: Schmidt-Rhaesa, Andreas
name: Utevsky, Serge
name: Kristensen, Reinhardt Møbjerg
name: Kieneke, Alexander
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Tardigrada
Heterotardigrada
Arthrotardigrada
Halechiniscidae
Angursa
Angursa abyssalis

description: Angursa abyssalis Renaud-Mornant, 1981
N= 238 specimens occurrence: ANDEEP I, II, III, ANDEEP-SYSTCO; 1,088–5,213 m bsl.
Fig. 8A–D; Supplementary Table 1.5
Short description
Angursa with slender body (120–180 µm long, 20–35 µm width, n=5) and primary clavae longer than cirri A. Secondary and tertiary clavae are usually clearly visible (Fig. 8A, B, B 2). Distance between both secondary clavae on the dorsal side of the head is 1.5–4.0 μm (Fig. 8B, B 2). Cirrus E short (8.0–12.0 µm, n=5) (Fig. D). The hemispherical sensory organ with a small apical spine on leg IV is sometimes a bit elongated (as in Angursa capsula) (Fig. 8C).
Remarks
The two species A. abyssalis and A. capsula are quite similar in the shape of the sensory organ of leg IV (Hansen and Fujimoto 2019). However, the main identifying trait for this species is the short (less than 4 µm) distance between the secondary clavae and the shorter cirri E (Fig. 8D).
description: Published as part of Trokhymchuk, Roman, Schmidt-Rhaesa, Andreas, Utevsky, Serge, Kristensen, Reinhardt Møbjerg & Kieneke, Alexander, 2024, Towards a better understanding of deep-sea tardigrade biogeography: numerous new records from the Southern Ocean, pp. 1-39 in Zootaxa 5543 (1) on page 17, DOI: 10.11646/zootaxa.5543.1.1, http://zenodo.org/record/14385085
Charged particles interaction in both a finite volume and a uniform magnetic field
Creators: name: Guo, Peng
name: Gasparian, Vladimir
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A formalism for describing charged particles interaction in both a finite volume and a uniform magnetic field is presented. In the case of short-range interaction between charged particles, we show that the factorization between short-range physics and finite volume long-range correlation effect is possible, a Lüscher formula-like quantization condition is thus obtained.
description: Revised version, an error in Eq.(63) is corrected, to appear in PRD
ECOVNet: An Ensemble of Deep Convolutional Neural Networks Based on EfficientNet to Detect COVID-19 From Chest X-rays
Creators: name: Chowdhury, Nihad Karim
name: Kabir, Muhammad Ashad
name: Rahman, Md. Muhtadir
name: Rezoana, Noortaz
Publisher: name: arXiv
Year: 2020
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: This paper proposed an ensemble of deep convolutional neural networks (CNN) based on EfficientNet, named ECOVNet, to detect COVID-19 using a large chest X-ray data set. At first, the open-access large chest X-ray collection is augmented, and then ImageNet pre-trained weights for EfficientNet is transferred with some customized fine-tuning top layers that are trained, followed by an ensemble of model snapshots to classify chest X-rays corresponding to COVID-19, normal, and pneumonia. The predictions of the model snapshots, which are created during a single training, are combined through two ensemble strategies, i.e., hard ensemble and soft ensemble to ameliorate classification performance and generalization in the related task of classifying chest X-rays.
Condensation on the outer surface of window glazings - Causes, effect on heat loss and method for prevention
Creators: name: Gläser, Hans Joachim
Publisher: name: Offenbach : Verlag der Deutschen Glastechnischen Gesellschaft
Year: 1997
Subjects: subject: 660

description: Fogging on the outside surfaces of window glazings increases if the thermal insulation of the glazing is improved, i.e., the k value is decreased as realized in the heat-insulating glasses currently on the market. The main reason for this is the radiation exchange with the open sky. The most endangered Windows for fogging are the sky lights and glazings in the skin of buildings, e. g. structural glazing facades, because they are exposed to the largest portion of the open sky. The conditions of fogging are investigated and discussed, as well as its influence on the heat loss of glazings is demonstrated. By radiation exchange with the open sky, the heat loss of window glazings can be increased by more than a factor 2 in comparison to the standardized k value. However, fogging reduces heat losses in dependence on the outside air humidity. Fogging and heat loss can be considerably reduced by a low-emissive coating on the outer surface of glazings. The demands on such a coating are discussed. Also a method of double coating consisting of a low-emissive subcoating and a hydrophobic and anti-sticking top-coating is presented, which has a self-cleaning effect. Lowemissive and, at the same time, self-cleaning coatings, deposited on the outer surface of glazings are a new function of flat glass and may be a challenge to the glass industry in the next years.
A microscopic model for Stefan's melting and freezing problem
Creators: name: Landim, Claudio
name: Valle, Glauco
Publisher: name: arXiv
Year: 2005
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60K35 (Primary)

description: We study a class of one-dimensional interacting particle systems with random boundaries as a microscopic model for Stefan's melting and freezing problem. We prove that under diffusive rescaling these particle systems exhibit a hydrodynamic behavior described by the solution of a Cauchy--Stefan problem.
description: Published at http://dx.doi.org/10.1214/009117905000000701 in the Annals of Probability (http://www.imstat.org/aop/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Glass membrane electrodes with solid-state internal contacts for pH and pNa measurements
Creators: name: Vonau, Winfried
name: Kaden, Heiner
Publisher: name: Offenbach : Verlag der Deutschen Glastechnischen Gesellschaft
Year: 1997
Subjects: subject: 660

description: The manufacture and properties of novel glass electrodes with solid-state contacts are described. The electrodes consist of spherical electrode membranes made of two different kinds of glass. The thin membrane in contact with the measured medium consists of an ion-selective electrolytically conducting material such as pH or pNa glass, whereas the other glass is a mixed Conducton This latter part of the double membrane uses electron- and ion-conducting mechanisms and is silver-coated. The mixed conduction glass and its metallic coating together form the internal discharge system of the ion-selective electrode. Investigation of the electrode function and the stability of its potendal has shown that its measuring characterisdcs are substantially better than those of glass electrodes with an internally metal-coated membrane. The reason for this is that reversible Charge carrier transitions (redox reactions) are possible at all phase boundaries. The electron transition is brought about by a change in the conduction mechanism from ionic conduction to electronic conduction. From the position of the isotherm intersection points outside the utilizable measuring ränge of the electrodes, it follows that automatic temperature compensation is not possible.
Hydrological Trend Analysis Due to Land Use Changes at Langat River Basin
Creators: name: Hafizan Juahir
name: Sharifuddin M. Zain
name: Aris, Ahmad Zaharin
name: Mohd Kamil Yusof
name: Mohd Armi Abu Samah
name: Mazlin Bin Mokhtar
Publisher: name: Thai Society of Higher Education Institutes on Environment
Year: 2010
Subjects: trend analysis,temporal change,Mann-Kendall,land use,hydrological

description: special issue, 3, EnvironmentAsia
EPR and voltammetric studies of iron-containing mixed alkali glasses with the basic composition xNa₂O · (16-x)Κ₂O * 10CaO * 74SiO₂
Creators: name: Rüssel, Christian
Publisher: name: Offenbach : Verlag der Deutschen Glastechnischen Gesellschaft
Year: 1997
Subjects: subject: 660

description: Mixed soda-potassium-lime glasses containing iron oxide in a concentration ränge of 0.1 to 2 m o l % were studied by means of EPR spectroscopy and voltammetry. At low iron concentrations a one-step reduction of Fe³ to Fe² was observed. The values of the Standard reaction enthalpy, ΔH⁰, and of the Standard reaction entropy, ΔS⁰, calculated from the temperature dependence of the Standard potentials show maxima if sodium and potassium concentrations are approximately equal. EPR spectra of all glasses investigated show two paramagnetic signals at g = 2.0 and g = 4.3. The ratio of the peak intensities, I₂.₀ /I₄.₃, increases with the Square of the total iron concentration. Here, the intensity of the g = 4.3 peak increases with increasing Na₂O concentration; the behaviour of the mixed alkali glasses, however, cannot be explained as an additive effect.
Connes distance of $2D$ harmonic oscillators in quantum phase space
Creators: name: Lin, Bing-Sheng
name: Heng, Tai-Hua
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the Connes distance of quantum states of $2D$ harmonic oscillators in phase space. Using the Hilbert-Schmidt operatorial formulation, we construct a boson Fock space and a quantum Hilbert space, and obtain the Dirac operator and a spectral triple corresponding to a $4D$ quantum phase space. Based on the ball condition, we obtain some constraint relations about the optimal elements. We construct the explicit expressions of the corresponding optimal elements and then derive the Connes distance between two arbitrary Fock states of $2D$ quantum harmonic oscillators. We prove that these two-dimensional distances satisfy the Pythagoras theorem.
description: Fixed some calculation mistakes in the later part
An order parameter equation for the dynamic yield stress in dense colloidal suspensions
Creators: name: Otsuki, Michio
name: Sasa, Shin-ichi
Publisher: name: arXiv
Year: 2005
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the dynamic yield stress in dense colloidal suspensions by analyzing the time evolution of the pair distribution function for colloidal particles interacting through a Lennard-Jones potential. We find that the equilibrium pair distribution function is unstable with respect to a certain anisotropic perturbation in the regime of low temperature and high density. By applying a bifurcation analysis to a system near the critical state at which the stability changes, we derive an amplitude equation for the critical mode. This equation is analogous to order parameter equations used to describe phase transitions. It is found that this amplitude equation describes the appearance of the dynamic yield stress, and it gives a value of 2/3 for the shear thinning exponent. This value is related to the mean field value of the critical exponent $δ$ in the Ising model.
description: 8 pages, 2 figures
Basic flow pattern and its Variation in different types of glass tank furnaces
Creators: name: Zhiqiang, Yang
name: Zhiao, Zhou
Publisher: name: Offenbach : Verlag der Deutschen Glastechnischen Gesellschaft
Year: 1997
Subjects: subject: 660

description: The mohen glass current in tank furnaces was studied by physical modelling. The basic flow pattern was divided into batch, melting, stagnant buffer, refming and conditioning regions. Every region and its special function are discussed here. The forming me chanism of the stagnant buffer area and the nearer or farther return position of back current, in particular, are presented with a new approach. Α pull current path within the glass melt in tank furnaces was assumed. Along this path the pull current has minimum residence time. This is a key parameter to analyze the process of efficient glass melting. Based on the model assumed, several operating stages with the changes in furnace structure are discussed. The factors affecting the pull current path must be those that mainly influence the whole melting process. The conclusion is supported by the Observation and measurement in the physical model . It also shows good agreement with operating experiences on actual furnaces. Through the research work in a series of furnaces, the authors have found that the flow pattern in tank furnaces wi th a throat greatly differs from that in open cross-fired furnaces without a throat. There is a strong back current from conditioning t ank to melting tank in the latter one. But for the furnace with a throat little back current could be found through the throat to the melting tank, i.e., the pull current in forward flow is not diverted and raised at the hot spot and therefore can flow directly along the bottom to the throat. No triangle stagnant area exists in this type of furnace. In order to overcome this shortcoming, measures are proposed and discussed in the paper.
Shape oscillations in non-degenerate Bose gases - transition from the collisionless to the hydrodynamic regime
Creators: name: Buggle, Ch.
name: Pedri, P.
name: von Klitzing, W.
name: Walraven, J. T. M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We investigate collective oscillations of non-degenerate clouds of Rb-87 atoms as a function of density in an elongated magnetic trap. For the low-lying M=0 monopole-quadrupole shape oscillation we measure the oscillation frequencies and damping rates. At the highest densities the mean-free-path is smaller than the axial dimension of the sample, which corresponds to collisionally hydrodynamic conditions. This allows us to cover the cross-over from the collisionless to the hydrodynamic regime. The experimental results show good agreement with theory. We also analyze the influence of trap anharmonicities on the oscillations in relation to observed temperature dependencies of the dipole and quadrupole oscillation frequencies. We present convenient expressions to quantify these effects.
description: 10 pages, 5 figures
Nonergodic dynamics in disorder-free potentials
Creators: name: Yao, Ruixiao
name: Chanda, Titas
name: Zakrzewski, Jakub
Publisher: name: arXiv
Year: 2021
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We review the dynamics of interacting particles in disorder-free potentials concentrating on a combination of a harmonic binding with a constant tilt. We show that a simple picture of an effective local tilt describes a variety of cases. Our examples include spinless fermions (as modeled by Heisenberg spin chain in a magnetic field), spinful fermions as well as bosons that enjoy a larger local on-site Hilbert space. We also discuss the domain-wall dynamics that reveals nonergodic features even for a relatively weak tilt as suggested by Doggen et. al. [arXiv:2012.13722]. By adding a harmonic potential on top of the static field we confirm that the surprizing regular dynamics is not entirely due to Hilbert space shuttering. It seems better explained by the inhibited transport within the domains of identically oriented spins. Once the spin-1/2 restrictions are lifted as, e.g., for bosons, the dynamics involve stronger entanglement generation. Again for domain wall melting, the effect of the harmonic potential is shown to lead mainly to an effective local tilt.
description: comments welcome
Hardt, Tom G.A., Venerabilis et adorabilis Eucharistia
Creators: name: Hildebrandt, Bernd
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 39 Nr. 1 (1990): Ökumenische Rundschau, Band 39, Heft 1
Design and Performance of Highway Shoulders
Creators: name: Hunsucker, David Q.
name: Sharpe, Gary W.
name: Deen, Robert C.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 1987
Subjects: subject: Transportation Engineering

description: This report summarizes finding of a long-term evaluation of the construction and performance of asphaltic concrete and portland cement concrete shoulders. Performance was used as the basis for the development of empirical criteria that permit the use of existing pavement thickness design procedures for the structural design of shoulders. Minimum thicknesses were determined on the basis of performance and review of literature.
Interaction between lead crystal glass (24 % PbO) and acetic acid
Creators: name: Ahmed, Ahmed A.
name: Youssuf, Ibrahim M.
Publisher: name: Offenbach : Verlag der Deutschen Glastechnischen Gesellschaft
Year: 1997
Subjects: subject: 660

description: On commercially available lead crystal glass tumblers (24 % PbO), the interaction between their bulk and grain forms and aqueous Solutions of various concentrations of acetic acid at different temperatures (22 to 95 °C), and for different times (30 min to 300 d) was studied. The extent of interaction was evaluated by determining the concentrations of K⁺, Na⁺, Pb²⁺ and Si⁴⁺ ions extracted by acetic acid, the change in the pH value of aqueous acetic acid Solutions and the weight loss of glass grains. The results showed that: a) Pb²⁺ was released from the glass studied under the Standard testing conditions in concentradons that were smaller than those specified in the various Standard specifications. b) The extraction of the different cations was significantly affected by the form of the test sample; glass grains were more reactive than the bulk form. c) Extraction of modifier cations, K⁺, Na⁺ and Pb²⁺, during short times of attack, up to 6 h at temperatures u p to 95 °C or during long-time attack up to 20 d at 22 °C, could be represented by a straight-line relationship when plotted against t^(1/2).Deviation was observed for times longer than 20 d but the straight-line relationship could be restored by plotting the extraction data against t. Such behaviour indicates that the leached layer became sufficiently thick after 20 d, so that the leaching and etching reactions proceeded at equal rates. d) The dissolution of glass increased with increasing temperature of attack up to 95 °C, but the mechanism of attack remained essentially of the leaching type. e) The extraction of K⁺, Na⁺, Pb²⁺ and Si⁴⁺ ions was affected by changing the concentration of acetic acid, which was correlated with the corresponding change in its pH value. f) The quantities of Pb^^ ions released by 4 % acetic acid Solution were several Orders of magnitude greater than that released by 40% ethyl alcohol Solution indicating that the Standard 4 % acetic acid test Solution is quite suitable for Pb²⁺ release safety.
Real forms of very extended Kac-Moody algebras and theories with eight supersymmetries
Creators: name: Riccioni, Fabio
name: Van Proeyen, Antoine
name: West, Peter
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider all theories with eight supersymmetries whose reduction to three dimensions gives rise to scalars that parametrise symmetric manifolds. We conjecture that these theories are non-linear realisations of very-extended Kac-Moody algebras for suitable choices of real forms. We show for the most interesting cases that the bosonic sector of the supersymmetric theory is precisely reproduced by the corresponding non-linear realisation.
description: 46 pages, 25 figures. Refs added, one appendix included, one figure added
In-situ investigations of sintering and crystallization of lithium aluminosilicate glass-ceramics
Creators: name: Zimemr, José
name: Raether, Friedrich
name: Müller, Gerd
Publisher: name: Offenbach : Verlag der Deutschen Glastechnischen Gesellschaft
Year: 1997
Subjects: subject: 660

description: The sintering and crystalhzation behaviour of a Li₂O-Al₂O₃-SiO₂ glass powder containing TiO₂ and ZrO₂ was investigated by the in-situ measuring methods of high-temperature dilatometry, high-temperature X-ray diffractometry and differential thermal analysis at heating rates between 0.5 a n d 20 K/min. By comparing the results of the different methods the shrinkage could be explained as an overlap of sintering and crystallization processes. When increasing the heating rate, the sintering and crystallization processes are separated mor e sharply, so that higher final densities of the sintered samples can be achieved.
Mécanismes fondamentaux de l'ablation laser femtoseconde en "flux intermédiaire"
Creators: name: Petite, Guillaume
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: This chapter aims at identifying what is specific to femtosecond laser ablation. It reviews the essential basic processes which contribute to femtosecond laser ablation of various materials : energy absorption by the material's electrons, electronic relaxation processes involving either electron-electron or electron-lattice interactions. A number of widely used models are briefly discussed, as well as some pending questions.
description: In French - Acte Ecole th\'{e}matique "Femto2004", Porquerolles, Sept. 2004
Performance Evaluation of Breakaway-Cable-Terminal End Treatments
Creators: name: Pigman, Jerry G.
name: Agent, Kenneth R.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 1987
Subjects: subject: Transportation Engineering

description: This report included an analysis of 110 accidents involving breakaway-cableterminal (BCT) end treatments and 36 accidents involving median-breakaway-cableterminal (MBCT) end treatments as used in Kentucky. The primary data base consisted of Kentucky accident records for the years 1980-87; with a few accidents that were identified before 1980. An attempt was made to document each accident with a police report, photographs, and a maintenance repair form.  Results revealed that the breakaway-cable-terminal end treatment performed properly in 73 percent of the accidents when all three configurations of end treatments were combined (simple curve, parabolic flare, and straight). Proper performance was defined as the wooden posts breaking away as designed or the guardrail redirecting the vehicle. Only 10 impacts were documented for small cars and the BCT performed improperly in four of those accidents. Evaluation of the BCT end treatment indicates that it may be used where geometries permit. Where those geometries are not present, the turned-down end treatment proposed in a previous report should be used.  The MBCT end treatment performed properly in 63 percent of the accidents. Problems related to stiffness of the end treatment were most apparent when impact angles were shallow. A recommendation was made to contour grade gore areas where possible and to install a crash cushion where the need for a barrier cannot be eliminated. For MBCT installations at median piers and median width of 20 feet or less, crash cushions were also recommended. A turned-down design was proposed for consideration at median piers where median width was greater than 20 feet.
Road Base Construction Utilizing Coal Waste Materials
Creators: name: Hunsucker, David Q.
name: Sharpe, Gary W.
name: Rose, Jerry G.
name: Deen, Robert C.
Publisher: name: Kentucky Transportation Center, University of Kentucky
Year: 1987
Subjects: subject: Transportation Engineering

description: The paper describes the development and implementation of a no-cement concrete mixture containing pulverized fuel ash (PVA) and atmospheric fluidized bed combustion (AFBC) by-products as the cementitious components for combination with conventional limestone aggregates used as bulk filler. The paper presents a summary of laboratory evaluations and the application of those results to the design of a base for roadway construction. The paper also describes the construction, evaluation, and performance of a pilot application of this material used as a base for a thin bituminous pavement.