cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Quantizations from reproducing kernel spaces
Creators: name: Ali, S. Twareque
name: Bagarello, Fabio
name: Gazeau, Jean Pierre
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The purpose of this work is to explore the existence and properties of reproducing kernel Hilbert subspaces of $L^2(\C, \, d^2z/π)$ based on subsets of complex Hermite polynomials. The resulting coherent states (CS) form a family depending on a nonnegative parameter $s$. We examine some interesting issues, mainly related to CS quantization, like the existence of the usual harmonic oscillator spectrum despite the absence of canonical commutation rules. The question of mathematical and physical equivalences between the $s$-dependent quantizations is also considered.
Greenway Use and Users: An Examination Of Raleigh and Charlotte Greenways
Creators: name: Furuseth, Owen J.
name: Altman, Robert E.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1990

description: As with any public facility, the planning and development of greenways should be reflective of the needs of potential users and types of usage. Because of their relative short history, however, almost no effort has been made to follow up the expected use of greenways with empirical evidence concerning their actual usage. Intuitively, greenway planners and designers may have some notion of likely patronage, how the facility will be used, and where patrons will be coming from, but these perceptions may be inappropriate. Without actual information on greenway visitors and use, the planning process is guided by conjecture.
On bifurcation for semilinear elliptic Dirichlet problems on geodesic balls
Creators: name: Portaluri, Alessandro
name: Waterstraat, Nils
Publisher: name: arXiv
Year: 2013
Subjects: subject: Analysis of PDEs (math.AP)
subject: Differential Geometry (math.DG)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics

description: We study bifurcation from a branch of trivial solutions of semilinear elliptic Dirichlet boundary value problems on a geodesic ball, whose radius is used as the bifurcation parameter. In the proof of our main theorem we obtain in addition a special case of an index theorem due to S. Smale.
description: 8 pages
A View from a Private Sector/Public Sector Planner
Creators: name: Grden, Nancy
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012

description: Consider the following headlines in 2012: “Zappo’s Founder Tony Hsieh Spends $350 Million of His Own Money to Make Sin City (Las Vegas) a Start-Up Hub” (BusinessWeek ); “50 Most Innovative Companies - James Corner Field Operations Redesigns Urban Industrial Remnants” (Fast Company); “PPACA (National Health Reform) Opens Door for States to Privatize Medicaid” (Kaiser Foundation); “Hampton Roads Fortune 500 CEOs Team Up With Cities to Explore Shared Service Pilot” (Virginian-Pilot). Every day, news and media channels abound with examples of new players, especially in the private sector, taking the reins of areas traditional managed by urban and regional planners. It is easy to interpret these significant changes as evidence that our discipline is no longer relevant and serves a trivial function in today’s society. I feel the reverse is true – and planning is more relevant than ever! However, the profession needs to re-invent itself to influence and adopt new and emerging models of inciting change in society today. The planning discipline is not alone in its need for re-invention. Institutions and endeavors ranging from journalism to higher education to finance are seeking new models of engagement and relevance in today’s rapidly changing world. The planning field is evolving from more centralized centers of subject matter expertise to models that influence through multiple levels of leadership and collaboration among experts. Fortunately, planners are particularly well equipped to lead and influence change in society. The planning profession’s core competencies – (1) managing multiple constituencies, (2) anticipating dominoes/interdependencies, and (3) taking the long-term view – are core tenets and areas of training not encouraged in many professions, let alone implemented.
Upper limits for PH3 and H2S in Titan's Atmosphere from Cassini CIRS
Creators: name: Nixon, Conor A.
name: Teanby, Nicolas A.
name: Irwin, Patrick G. J.
name: Horst, Sarah M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We have searched for the presence of simple P and S-bearing molecules in Titan's atmosphere, by looking for the characteristic signatures of phosphine and hydrogen sulfide in infrared spectra obtained by Cassini CIRS. As a result we have placed the first upper limits on the stratospheric abundances, which are 1 ppb (PH3) and 330 ppb (H2S), at the 2-sigma significance level.
description: 12 pages text, 1 table, 2 figures
Influence of Pre-strain on Very-Low-Cycle Stress–Strain Response and Springback Behavior
Creators: name: Barienti, Khemais
name: Klein, Martin
name: Wackenrohr, Steffen
name: Herbst, Sebastian
name: Nürnberger, Florian
name: Maier, Hans Jürgen
Publisher: name: Heidelberg : Springer
Year: 2021
Subjects: subject: copper
subject: elastic modulus
subject: fatigue
subject: plastic pre-deformation
subject: springback
subject: steel
subject: titanium
subject: Materials science
subject: Mechanical properties
subject: Apparent elastic modulus
subject: Elastic properties
subject: Feature changes
subject: Low cycle loading
subject: Material hardening
subject: Springback behavior
subject: Strain amplitude
subject: Strain response
subject: Compression testing
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau
subject: Dewey Decimal Classification::600 | Technik::660 | Technische Chemie
subject: Dewey Decimal Classification::600 | Technik::670 | Industrielle und handwerkliche Fertigung

description: The influence of pre-strain on the very-low-cycle loading behavior as occurring, for example during roller leveling of sheet metals, is not yet fully understood. A key factor in this context is the stiffness of the material and its changes upon processing. To study the general mechanical property changes during low-cycle loading with small amplitudes for a wide variety of metals, sheet samples of mild steel DC01, pure copper CU-DHP and α-titanium are subjected to low-cycle tension–compression tests. The general influences of pre-strain and the applied strain amplitude are investigated regarding material hardening and changes in the elastic properties. It is shown that all tested materials feature changes in the Bauschinger behavior during cycling. The apparent elastic modulus of the materials decreases with increasing accumulated plastic strain, and the evolution depends on the strain amplitude and the pre-strain. For all three materials, changes in technical springback are present and depend on the loading history. © 2020, The Author(s).
Entwicklung einer Aufreinigungs- und Immobilisierungsstrategie von Enzymen für Durchflussreaktoren und chemoenzymatische Studien am Granaticin
Creators: name: Kiss, Csilla
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2006
Subjects: subject: NTA-Linker
subject: Enzymimmobilisierung
subject: Polymermatrix
subject: PASSflow
subject: chemoenzymatische Umsetzungen
subject: vorläuferdirigierte Biosynthese
subject: Biotransformationen
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]
The coupled system (2)2Σ+ and (1)2Π of 7Li88Sr
Creators: name: Schwanke, Erik
name: Gerschmann, Julia
name: Knöckel, Horst
name: Ospelkaus, Silke
name: Tiemann, Eberhard
Publisher: name: Bristol : IOP Publishing Ltd.
Year: 2020
Subjects: subject: molecular spectra
subject: potential energy surfaces
subject: rotation
subject: vibration and vibration-rotation constants
subject: Binary alloys
subject: Excited states
subject: Lithium alloys
subject: Mass spectrometry
subject: Molecular spectroscopy
subject: Potential energy
subject: Potential energy surfaces
subject: Quantum chemistry
subject: Rotation
subject: Strontium alloys
subject: Dunham coefficients
subject: Molecular coupling
subject: Molecular parameters
subject: Molecular spectra
subject: Rovibrational levels
subject: Rovibrational transitions
subject: Vibration rotations
subject: Vibrational levels
subject: Vibration analysis
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We analyse rovibrational transitions of the (2)2Σ+-X(1)2Σ+ system of LiSr and find the energy levels of the (2)2Σ+ state to be perturbed by coupling between the (2)2Σ+ and (1)2Π states. We present an analysis of the coupled system yielding molecular parameters for the lowest vibrational levels of the (2)2Σ+ state and for higher vibrational levels of the (1)2Π state together with molecular coupling constants. Improved Dunham coefficients for the rovibrational levels of the X(1)2Σ+ state are also obtained, where the correlation with the parameters of the excited states is removed completely. © 2020 The Author(s). Published by IOP Publishing Ltd.
Combined thermomechanical and optical simulations of planar-optical polymer waveguides
Creators: name: Suar, Monali
name: Baran, Murat
name: Günther, Axel
name: Roth, Bernhard
Publisher: name: Bristol : IOP Publishing Ltd.
Year: 2020
Subjects: subject: multi-physics simulation and analysis
subject: optical components and networks
subject: polymer waveguides
subject: Beam propagation method
subject: Esters
subject: Eye movements
subject: Polymers
subject: Refractive index
subject: Sensor networks
subject: Thermal gradients
subject: Waveguide components
subject: Analysis of polymers
subject: Beam intensity profile
subject: Finite difference beam propagation method
subject: Finite-element approach
subject: Functional structure
subject: Optical polymer waveguides
subject: Poly(methyl methacrylate) (PMMA)
subject: Refractive index modulation
subject: Optical waveguides
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: In this work, we describe a theoretical approach for combined thermal, mechanical and optical simulation and analysis of planar polymer waveguides. We consider a finite element approach for thermal and stress/deformation simulation. Also, a Crank-Nicholson finite difference beam propagation method (CN-BPM) is implemented to perform the optical simulation. The results of the finite element (thermo-mechanical) analysis are coupled with the CN-BPM results to carry out the optical simulation of poly(methyl methacrylate) (PMMA) waveguides as function of temperature. For thermal simulation, a model was designed where a polysilicon microheater was added to the upper cladding of the PMMA waveguides to vary the temperature between 20 °C and 200 °C. Thus, the impact of the induced temperature gradients on the refractive index modulation of the PMMA waveguides and the corresponding change in numerical aperture are obtained. In addition, the temperature gradients influence the beam intensity profiles and the movement of the primary eyes within the optical waveguides, thus, impacting the optical properties. Furthermore, the thermally induced mechanical stress and deformation were calculated for transverse and axial directions. In the next step, validation of the model by systematic experimental studies will be performed. In general, our approach provides a toolbox for more comprehensive multi-physics theoretical analysis of polymer-optical waveguides which, in future, can be extended to more complex and functional structures as required for flexible sensor networks, as example.
Optimierung der biosynthetischen Produktion von Polysialinsäure und Oligosialinsäure aus Escherichia coli K1
Creators: name: Bice, Ismet
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2012
Subjects: subject: Polysialinsäure
subject: Escherichia coli K1
subject: Membranadsorber
subject: anorganische Tonmineralien
subject: Polysialic acid
subject: membrane adsorber
subject: inorganic clay minerals
subject: Dewey Decimal Classification::600 | Technik::660 | Technische Chemie

description: [no abstract]
Sonnenfleckenzeichnung Nr. 76.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 08.04.1991, 07:30, erstellt von Sergio Cortesi, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1991

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Subaru/HDS study of HE 1015-2050: Spectral evidence of R Coronae Borealis light decline
Creators: name: Goswami, Aruna
name: Aoki, Wako
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Hydrogen deficiency and a sudden optical light decline by about 6-8 mag are two principal characteristics of R Coronae Borealis (RCB) stars. The high latitude carbon star HE 1015-2050 was identified as a hydrogen-deficient carbon star from low-resolution spectroscopy. Photometric data of the Catalina Real-Time Transient Survey gathered between 2006 February and 2012 May indicate that the object exhibits no variability. However, a high-resolution (R ~ 50,000) optical spectrum of this object obtained with the 8.2m Subaru telescope using High Dispersion Spectrograph on the 2012 January 13 offers sufficient spectral evidences for the object being a cool HdC star of RCB type undergoing light decline. In contrast to the Na I D broad absorption features, seen in the low-resolution spectra on several occasions, the high-resolution spectrum exhibits Na I D2 and D1 features in emission. A few emission lines due to Mg I, Sc II, Ti I, Ti II, Fe II and Ba I are also observed in the spectrum of this object for the first time. Such emission features combined with neutral and singly ionized lines of Ca, Ti, Fe, etc., in absorption are reportedly seen in RCBs spectra in the early stage of decline or during the recovery to maximum. Further, the light decline of RCBs is ascribed to the formation of a cloud of soot that obscures the visible photosphere. Presence of such circumstellar material is evident from the polarimetric observations with an estimated V-band percentage polarization of ~1.7% for this object.
description: 16 pages, 5 figures, Accepted for publication in the Astrophysical Journal Letters
Sonnenfleckenzeichnung Nr. 170.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 22.07.1991, 07:45, erstellt von Sergio Cortesi, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1991

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Sonnenfleckenzeichnung Nr. 206.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 27.08.1991, 07:00, erstellt von Sergio Cortesi, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1991

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Crystal structure of potassium tris(oxalato)ferrate(III) trihydrate doped with sodium, K2.9Na0.1Fe(C2O4)3 3H2O
Creators: name: Wartchow, Rudolf
Publisher: name: Berlin, Boston : De Gruyter
Year: 1997
Subjects: subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]
Sonnenfleckenzeichnung Nr. 279.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 04.12.1991, 09:00, erstellt von Sergio Cortesi, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1991

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Urban Waterfronts: Awash with Controversy
Creators: name: Wrenn, Douglas
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 1983

description: The effective reuse of waterfront sites, buildings, and piers, both for economic development and recreational and cultural activities, is occurring in several cities. Baltimore, Boston, Seattle, and other cities are discovering new uses for their abandoned or deteriorating waterfronts, and in the process attracting people and revenue to the revitalized harbors. Successful redevelopment varies widely, but there are several development issues that are common to all waterfront projects: handling regulations and permits, deciding on the appropriate use of the waterfront, providing public access, and ensuring citizen participation.
Funktionelle Analyse der atypischen Protein Kinase C
Creators: name: Kovac, Judit
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2006
Subjects: subject: Atypische PKC
subject: Zellpolarität
subject: Zellkontakte
subject: Gastrulation
subject: Embryogenese
subject: gene targeting
subject: knockout/knockin
subject: funktionelle Redundanz
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie

description: [no abstract]
Sonnenfleckenzeichnung Nr. 269.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 24.11.1991, 11:45, erstellt von Andrea Manna, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1991

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Die Entwicklungsbedingungen der deutschen Hospizbewegung und der niederländischen Bewegung der Palliative Care
Creators: name: Jordan, Isabella
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2006
Subjects: subject: Hospizbewegung
subject: Palliativmedizin
subject: Selbstbestimmung am Lebensende
subject: deutsche Euthanasiedebatte
subject: Framing-Analyse
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::360 | Soziale Probleme, Sozialdienste, Versicherungen

description: [no abstract]
Sonnenfleckenzeichnung Nr. 213.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 03.09.1991, 09:00, erstellt von Michele Bianda, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1991

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Carex vesicaria
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: E. vesicaria (L.) Cav. ssp. sativa (Miller) Thell. (E. sativa]VIiller) Cat. 25. Fast alle Vorkommnisse gehören zur var. genuina Rouy subvar. dasycarpa Trautv.; die var. genuina subvar. hispida (Ten.) Rouy et Fouc. bei Branson.
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Sonnenfleckenzeichnung Nr. 143.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 25.06.1991, 07:45, erstellt von Sergio Cortesi, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1991

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Galaxy environments over cosmic time: the non-evolving radial galaxy distributions around massive galaxies since z=1.6
Creators: name: Tal, Tomer
name: van Dokkum, Pieter G.
name: Franx, Marijn
name: Leja, Joel
name: Wake, David A.
name: Whitaker, Katherine E.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a statistical study of the environments of massive galaxies in four redshift bins between z=0.04 and z=1.6, using data from the Sloan Digital Sky Survey (SDSS) and the NEWFIRM Medium Band Survey (NMBS). We measure the projected radial distribution of galaxies in cylinders around a constant number density selected sample of massive galaxies and utilize a statistical subtraction of contaminating sources. Our analysis shows that massive primary galaxies typically live in group halos and are surrounded by 2 to 3 satellites with masses more than one-tenth of the primary galaxy mass. The cumulative stellar mass in these satellites roughly equals the mass of the primary galaxy itself. We further find that the radial number density profile of galaxies around massive primaries has not evolved significantly in either slope or overall normalization in the past 9.5 Gyr. A simplistic interpretation of this result can be taken as evidence for a lack of mergers in the studied groups and as support for a static evolution model of halos containing massive primaries. Alternatively, there exists a tight balance between mergers and accretion of new satellites such that the overall distribution of galaxies in and around the halo is preserved. The latter interpretation is supported by a comparison to a semi-analytic model, which shows a similar constant average satellite distribution over the same redshift range.
description: Submitted to ApJ
Staying Green: Local Tree Protection Ordinances in North Carolina
Creators: name: Meadows, Chad
name: Sizemore, Stephen
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2010

description: With greater urgency, communities are realizing the need for sustainable development practices that help to address climate change, limit dependence on foreign fuel sources, support healthy lifestyles, and better protect natural resources for future generations. Regulatory requirements that protect and retain existing trees during and after the development process are some of the most cost-effective methods for communities to be more sustainable. This article enumerates many of the benefits of tree protection, including lower energy costs through shading and reduced greenhouse gases through carbon sequestration. It surveys the wide variety of tree protection strategies (mandatory, voluntary, and incentive-based) used by more than 100 local and county governments across North Carolina, and it describes the hallmarks of an effective tree protection ordinance. Given the state’s growth trajectory and the public’s heightened recognition of the need for more sustainable development practices, tree protection standards are likely to become more prevalent and comprehensive in the future.
Sonnenfleckenzeichnung Nr. 262.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 11.11.1991, 08:00, erstellt von Sergio Cortesi, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1991

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Accidental SUSY: Enhanced bulk supersymmetry from brane back-reaction
Creators: name: Burgess, C.P.
name: Van Nierop, L.
name: Parameswaran, Susha L.
name: Salvio, A.
name: Williams, M.
Publisher: name: Heidelberg : Springer Verlag
Year: 2013
Subjects: subject: Flux compactifications
subject: Large Extra Dimensions
subject: Renormalization Group
subject: Supergravity Models
subject: Dewey Decimal Classification::500 | Naturwissenschaften
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We compute how bulk loops renormalize both bulk and brane effective interactions for codimension-two branes in 6D gauged chiral supergravity, as functions of the brane tension and brane-localized flux. We do so by explicitly integrating out hyper- and gauge-multiplets in 6D gauged chiral supergravity compactified to 4D on a flux-stabilized 2D rugby-ball geometry, specializing the results of a companion paper, arXiv:1210.3753 , to the supersymmetric case. While the brane back-reaction generically breaks supersymmetry, we show that the bulk supersymmetry can be preserved if the amount of brane- localized flux is related in a specific BPS-like way to the brane tension, and verify that the loop corrections to the brane curvature vanish in this special case. In these systems it is the brane-bulk couplings that fix the size of the extra dimensions, and we show that in some circumstances the bulk geometry dynamically adjusts to ensure the supersymmetric BPS-like condition is automatically satisfied. We investigate the robustness of this residual supersymmetry to loops of non-supersymmetric matter on the branes, and show that supersymmetry- breaking effects can enter only through effective brane-bulk interactions involving at least two derivatives. We comment on the relevance of this calculation to proposed applications of codimension-two 6D models to solutions of the hierarchy and cosmological constant problems.
Sonnenfleckenzeichnung Nr. 160.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 12.07.1991, 09:45, erstellt von Michele Bianda, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1991

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 4.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Formation and evolution of interstellar filaments; Hints from velocity dispersion measurements
Creators: name: Arzoumanian, Doris
name: André, Philippe
name: Peretto, Nicolas
name: Konyves, Vera
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We investigate the gas velocity dispersions of a sample of filaments recently detected as part of the Herschel Gould Belt Survey in the IC5146, Aquila, and Polaris interstellar clouds. To measure these velocity dispersions, we use 13CO, C18O, and N2H+ line observations obtained with the IRAM 30m telescope. Correlating our velocity dispersion measurements with the filament column densities derived from Herschel data, we show that interstellar filaments can be divided into two regimes: thermally subcritical filaments, which have transonic velocity dispersions (c_s ~< σ_tot < 2 c_s) independent of column density, and are gravitationally unbound; and thermally supercritical filaments, which have higher velocity dispersions scaling roughly as the square root of column density (σ_tot ~ Σ^0.5), and are self-gravitating. The higher velocity dispersions of supercritical filaments may not directly arise from supersonic interstellar turbulence but may be driven by gravitational contraction/accretion. Based on our observational results, we propose an evolutionary scenario whereby supercritical filaments undergo gravitational contraction and increase in mass per unit length through accretion of background material while remaining in rough virial balance. We further suggest that this accretion process allows supercritical filaments to keep their approximately constant inner widths (~ 0.1 pc) while contracting.
description: 16 pages, 8 figures, 1 table, 1 appendix. Accepted for publication in Astronomy and Astrophysics
Theoretical modeling and experimental verification of an optimized Optically Pumped Magnetometer coupled to a magnetic guide for quantum sensing
Creators: name: A . Barbecho
name: Jofre, M.
Publisher: name: Zenodo
Year: 2023
Subjects: Quantum sensing
Optically Pumped Magnetometer
Magnetic guide

description: Poster of the Bachelor Thesis "Theoretical modeling and experimental verification of an optimized Optically Pumped Magnetometer coupled to a magnetic guide for quantum sensing" Authors: A. Barbecho and M. Jofre Corresponding author: A. Barbecho Universitat Politècnica de Catalunya References: [1] Marc Jofre, Jordi Romeu, and Luis Jofre-Roca. Optically pumped magnetometer with high spatial resolution magnetic guide for the detection of magnetic droplets in a microfluidic channel. New Journal of Physics, 25(1):013028, jan 2023 [2] C. Navau, J. Prat-Camps, O. Romero-Isart, J. I. Cirac, and A. Sanchez. Long-distance transfer and routing of static magnetic fields. Phys. Rev. Lett., 112:253901,Jun 2014. [3] Young Jin Kim and Igor Savukov. Ultra-sensitive Magnetic Microscopy with an Optically Pumped Magnetometer. Scientific Reports, 6:24773, April 2016. [4] Savukov, Y J Kim, V Shah, and M G Boshier. High-sensitivity operation of single beam optically pumped magnetometer in a khz frequency range. Measurement Science and Technology, 28(3):035104, feb 2017. [5] Shaowen Zhang, Kaixuan Zhang, Ying Zhou, Mao Ye, and Jixi Lu. Triaxial precise magnetic field compensation of a zero-field optically pumped magnetometer based on a single-beam configuration. Opt. Express, 30(14):24579–24588, Jul 2022
Controlling the Interactions between Soft Colloids via Surface Adsorption
Creators: name: Egorov, S. A.
name: Paturej, J.
name: Likos, C. N.
name: Milchev, A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: By employing monomer-resolved computer simulations and analytical considerations based on polymer scaling theory, we analyze the conformations and interactions of multiarm star polymers strongly adsorbed on a smooth, two-dimensional plane. We find a stronger stretching of the arms as well as a stronger repulsive, effective interaction than in the three dimensional case. In particular, the star size scales with the number of arms $f$ as $\sim f^{1/4}$ and the effective interaction as $\sim f^{2}$, as opposed to $\sim f^{1/5}$ and $\sim f^{3/2}$, respectively, in three dimensions. Our results demonstrate the dramatic effect that geometric confinement can have on the effective interactions and the subsequent correlations of soft colloids in general, for which the conformation can be altered as a result of geometrical constraints imposed on them.
description: 17 pages, LaTeX, 5 figures, to appear in Macromolecules
Sonnenfleckenzeichnung Nr. 146.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 28.06.1991, 06:30, erstellt von Sergio Cortesi, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1991

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Sonnenfleckenzeichnung Nr. 224.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 16.09.1991, 08:00, erstellt von Sergio Cortesi, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1991

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Das neue deutsche Gebäudeenergiegesetz: Mehr Schaden als Nutzen. (The new German Building Energy Act: More Costs than Benefits)
Creators: name: Greiner, Alfred
Publisher: name: Bielefeld University, Department of Business Administration and Economics
Year: 2023
Subjects: subject: 330

description: In this paper we argue that the new German Building Energy Act is ineffective, counterproductive and harms future generations. First, the emissions of the buildings sector are currently regulated by the national emission trading system. Any additional measure does not have an ecological effect, but, only causes additional costs. Hence, the new German Building Energy Act is ineffective, not necessary and not appropriate. Second, it does not take into account CO2 emissions from wood-burning that is expected to increase in the future and, consequently, is counter-productive and discriminatory. Further, it fails to account for the respirable dust load resulting from the burning of fossil fuels and the resulting health hazards. Third, the new German Building Energy Act together with other policy measures by the government costs trillions of euros that do not raise aggregate production possibilities. This goes at the cost of future generations who will experience future limitations of their freedom.
Color Dispersion and Milky Way Reddening Among Type Ia Supernovae
Creators: name: Scolnic, Daniel M.
name: Riess, Adam G.
name: Foley, Ryan J.
name: Rest, Armin
name: Rodney, Steven A.
name: Brout, Dillon J.
name: Jones, David O.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Past analyses of Type Ia Supernovae (SNe Ia) have identified an irreducible scatter of 5-10% in distance widely attributed to an intrinsic dispersion in luminosity. Another, equally valid, source of this scatter is intrinsic dispersion in color. Misidentification of the true source of this scatter can bias both the retrieved color-luminosity relation and cosmological parameter measurements. The size of this bias depends on the magnitude of the intrinsic color dispersion relative to the distribution of colors that correlate with distance. We produce a realistic simulation of a misattribution of intrinsic scatter, and find a negative bias in the recovered color-luminosity relation, beta, of dbeta -1.0 (~33%) and a positive bias in the equation of state parameter, w, of dw +0.04 (~4%). We re-analyze current published data sets with the assumptions that the distance scatter is predominantly the result of color. Unlike previous analyses, we find that the data are consistent with a Milky Way reddening law R_V=3.1, and that a Milky Way dust model better predicts the asymmetric color-luminosity trends than the conventional luminosity scatter hypothesis. We also determine that accounting for color variation reduces the correlation between various Host galaxy properties and Hubble residuals by ~20%.
description: 9 pages, 5 figures. Submitted to The Astrophysical Journal
Fabrication of CeO2 by sol-gel process based on microfluidic technology as an analog preparation of ceramic nuclear fuel microspheres
Creators: name: Ye, Bin
name: Miao, Jilang
name: Li, Jiaolong
name: Zhao, Zichen
name: Chang, Zhenqi
name: Serra, Christophe A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Microfluidics integrated with sol-gel processes is introduced in preparing monodispersed MOX nuclear fuel microspheres using nonactive cerium as a surrogate for uranium or plutonium. The detailed information about microfluidic devices and sol-gel processes are provided. The effects of viscosity and flow rate of continuous and dispersed phase on size and size distribution of CeO2 microspheres have been investigated. A comprehensive characterization of the CeO2 microspheres has been conducted, including XRD pattern, SEM, density, size and size distribution. The size of prepared monodisperse particles can be controlled precisely in range of 10μm to 1000μm and the particle CV is below 3%.
description: 7 pages, 11 figures
Online Learning of the Inverse Dynamics with Parallel Drifting Gaussian Processes: Implementation of an Approach for Feedforward Control of a Parallel Kinematic Industrial Robot
Creators: name: Habich, Tim-Lukas
name: Kaczor, Daniel
name: Tappe, Svenja
name: Ortmaier, Tobias
Publisher: name: Piscataway, NJ, USA : Institute of Electrical and Electronics Engineers Inc.
Year: 2019
Subjects: subject: online learning
subject: inverse dynamics
subject: feedforward control
subject: implementation
subject: Gaussian Process
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: The present paper deals with an online approach to learn the inverse dynamics of any robot. This is realized by the use of Gaussian Processes drifting parallel along the system data. An extension by a database enables the efficient use of data points from the past. The central component of this work is the implementation of such a method in a controller in order to achieve the actual goal: the feedforward control of an industrial robot by means of machine learning. This is done by splitting the procedure into two threads running parallel so that the prediction is decoupled from the computing-intensive training of the models. Experiments show that the method reduces the tracking errors more clearly than an elaborately identified rigid body model including friction. For a defined trajectory, the squared areas of the tracking errors of all axes are reduced by more than 54% compared to motion without pre-control. In addition, a highly dynamic pick-and-place experiment is used to investigate the possible changes in system dynamics. Compared to an offline trained model, the approximation error of the proposed online approach is smaller for the remaining time of the experiment after an initial phase. Furthermore, this error is smaller throughout the experiment for online learning with parallel drifting Gaussian Processes than when using a single one.
Climate change and economic growth: Evidence for European countries
Creators: name: Greiner, Alfred
name: Bökemeier, Bettina
name: Owusu, Benjamin Kwaw
Publisher: name: Bielefeld University, Department of Business Administration and Economics
Year: 2023
Subjects: subject: 330
subject: Climate change
subject: economic growth
subject: policy implications
subject: robustness

description: Climate change is very likely to affect economies and the welfare of people around the world. In order to design appropriate policy responses, the economic effects of climate change should be known. One strand in the literature empirically estimates the growth effects of climatic variations. However, those studies often neglect economic variables that have proven to be robust in explaining economic growth. Further, often they fail to check for the robustness of their results. In this study we apply panel estimation techniques to analyze the relation between climate change and economic growth for 24 European economies for the period from 2002 to 2019 based on different specifications. We do not find a statistically significant robust relationship between the temperature change and economic growth just as for precipitation that does not exert a significant effect on growth. As regards the institutional and macroeconomic control variables the rule of law, the fiscal variable and the output gap are statistically significant.
Sonnenfleckenzeichnung Nr. 125.
Zeichnung von Flecken und Fackelflächen zur Ermittlung der Sonnenaktivität am 02.06.1991, 10:30, erstellt von Andrea Manna, Sonnenobservatorium Specola Solare Ticinese in Locarno
Creators: name: Observatorium Specola Solare Ticinese Locarno (1957 bis 1980 Teil der Eidgenössischen Sternwarte der ETH Zürich)
Publisher: name: [s.n.]
Year: 1991

description: Bleistiftzeichnung mit schwarzer Farbe und Bleistift, erstellt als Projektionsbildzeichnung für die Beobachtungen in Locarno-Monti auf einem eigenen Vordruck. Instrument: Zeiss-Coudé-Refraktor mit 15 cm Öffnung und 225 cm Brennweite. Bildqualität (SIDC): 3.
Die Beobachtungen zu Einzelflecken und zu Sonnenfleckengruppen wurden auf dem Vordruck eingetragen. Zusätzlich sind zuhanden der späteren statistischen Verarbeitung die Angaben für die Bestimmung der Fleckenrelativzahl notiert.
Beobachtungstätigkeit unter eigenständiger Leitung (Associazione Specola Solare Ticinese ASST)
Umwelt- und werkstoffgerechte Schutzsysteme für Magnesiumschmelzen
Creators: name: Karger, Alexander
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 2006
Subjects: subject: Magnesium
subject: Giessen
subject: SF6
subject: Schutzgas
subject: Dewey Decimal Classification::600 | Technik::660 | Technische Chemie

description: [no abstract]
Comparison between the compressibilities of the zero field and composite-fermion metallic states of the two-dimensional electron system
Creators: name: Dorozhkin, S.I.
name: Smet, J.H.
name: Von Klitzing, K.
name: Umansky, V.
name: Haug, Rolf J.
name: Ploog, K.
Publisher: name: College Park, MD : American Physical Society
Year: 2001
Subjects: subject: aluminum
subject: arsenic
subject: gallium
subject: article
subject: chemical interaction
subject: density
subject: electron
subject: magnetic field
subject: semiconductor
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We have studied the capacitance between a two-dimensional electron system and a gate of field-effect transistors, produced from three different wafers with a single remotely doped GaAs/AlxGa1-xAs heterojunction. In the vicinity of the Landau-level filling factor v=1/2, the increment of the capacitance relative to its zero-magnetic-field value, δC1/2, was found to be insensitive to the carrier density, and close to the value as if the particles are noninteracting. This observation implies that electron-electron interaction affects the compressibility of the zero-field and composite-fermion metallic states in a very similar manner.