cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Photometric Redshifts with the LSST II: The Impact of Near-Infrared and Near-Ultraviolet Photometry
Creators: name: Graham, Melissa L.
name: Connolly, Andrew J.
name: Wang, Winnie
name: Schmidt, Samuel J.
name: Morrison, Christopher B.
name: Ivezić, Željko
name: Fabbro, Sébastien
name: Côté, Patrick
name: Daniel, Scott F.
name: Jones, R. Lynne
name: Jurić, Mario
name: Yoachim, Peter
name: Kalmbach, J. Bryce
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Accurate photometric redshift (photo-$z$) estimates are essential to the cosmological science goals of the Vera C. Rubin Observatory Legacy Survey of Space and Time (LSST). In this work we use simulated photometry for mock galaxy catalogs to explore how LSST photo-$z$ estimates can be improved by the addition of near-infrared (NIR) and/or ultraviolet (UV) photometry from the Euclid, WFIRST, and/or CASTOR space telescopes. Generally, we find that deeper optical photometry can reduce the standard deviation of the photo-$z$ estimates more than adding NIR or UV filters, but that additional filters are the only way to significantly lower the fraction of galaxies with catastrophically under- or over-estimated photo-$z$. For Euclid, we find that the addition of ${JH}$ $5σ$ photometric detections can reduce the standard deviation for galaxies with $z>1$ ($z>0.3$) by ${\sim}20\%$ (${\sim}10\%$), and the fraction of outliers by ${\sim}40\%$ (${\sim}25\%$). For WFIRST, we show how the addition of deep ${YJHK}$ photometry could reduce the standard deviation by ${\gtrsim}50\%$ at $z>1.5$ and drastically reduce the fraction of outliers to just ${\sim}2\%$ overall. For CASTOR, we find that the addition of its ${UV}$ and $u$-band photometry could reduce the standard deviation by ${\sim}30\%$ and the fraction of outliers by ${\sim}50\%$ for galaxies with $z<0.5$. We also evaluate the photo-$z$ results within sky areas that overlap with both the NIR and UV surveys, and when spectroscopic training sets built from the surveys' small-area deep fields are used.
description: 21 pages, 16 figures, 4 tables, accepted to AJ
Algebra
Creators: name: Ideler, Ludwig
Publisher: name: [s.n.]
Year: 1829

description: Ludwig Ideler
description: Geschenk Öffentliche Bibliothek der Universität Basel
description: Deutsch
description: Verzeichnung=Description=Inventaire Dez. 2012
description: Erschliessungsniveau Normalniveau
description: Digitalisierung=Digitization=Numérisation November 2024 TIFF
The role of quark mass in cold and dense perturbative QCD
Creators: name: Fraga, Eduardo S.
name: Romatschke, Paul
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We consider the equation of state of QCD at high density and zero temperature in perturbation theory to first order in the coupling constant $α_s$. We compute the thermodynamic potential including the effect of a non-vanishing mass for the strange quark and show that corrections are sizable. Renormalization group running of the coupling and the strange quark mass plays a crucial role. The structure of quark stars is dramatically modified.
description: 5 pages REVTEX4, 4 figures; minor changes, matches published version
National Brand and Private Label Pricing and Promotional Strategy
Creators: name: Volpe, Richard J.
name: Volpe, Richard J.
Publisher: name: Unknown
Year: 2010
Subjects: subject: Agribusiness
subject: Demand and Price Analysis
subject: Industrial Organization
subject: Marketing
subject: FOS: Economics and business
subject: food retail
subject: industrial organization
subject: food prices
subject: promotional activity

description: In this paper I use a unique and rich data set on prices and promotions from major US supermarkets to examine the nature of National Brand and Private Label interaction. Private labels are priced and promoted competitively with NBs, in a manner suggesting that retails are careful not to lose private label market share during times of national brand promotions. The price margin between the two types of products continues to fall in US supermarkets, and the major determinants of the price differences between the two are promotional frequency and market concentration.
Figure S1 from Genome-wide patterns of divergence and introgression after secondary contact between Pungitius sticklebacks
Creators: name: Yamasaki, Yo Y.
name: Kakioka, Ryo
name: Takahashi, Hiroshi
name: Toyoda, Atsushi
name: Nagano, Atsushi J.
name: Machida, Yoshiyasu
name: Møller, Peter R.
name: Kitano, Jun
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Evolutionary Biology
subject: 60408 Genomics

description: Demographic models tested by the allele frequency spectrum analysis.
Mischband mit Ars memoriae
Creators: name: Erasmus, Desiderius
name: Bullinger, Heinrich
Publisher: name: [s.n.]
Year: 1477

description: Enthält Drucke (Teile 1 und 2) sowie eine Handschrift (Teil 3)
description: Öffentliche Bibliothek der Universität Basel
description: Lateinisch
description: Gemäss Besitzeintrag auf Ir aus der Bibliothek der Basler Kartause, welche den Band von Nicolaus Molitoris erworben hatte.
description: Scarpatetti, Beat Matthias von u.a. - Katalog der datierten Handschriften in der Schweiz ..., Bd. 1, Dietikon-Zürich 1977, Nr. 656
description: Digitalisierung=Digitization=Numérisation August 2023 TIFF
description: Verzeichnung=Description=Inventaire Mai 2015 HAN-Katalogisierungsregeln Minimalaufnahme nach: Steinmann, unpublizierte Beschreibung
description: Verzeichnung=Description=Inventaire August 2023 HAN-Katalogisierungsregeln Normalaufnahme nach Steinmann, ungedruckte Beschreibung Helena Müller
description: Erschliessungsniveau Normalniveau
Constraining the Reionization History using Bayesian Normalizing Flows
Creators: name: Hortúa, Héctor J.
name: Malago, Luigi
name: Volpi, Riccardo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Machine Learning (cs.LG)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: The next generation 21 cm surveys open a new window onto the early stages of cosmic structure formation and provide new insights about the Epoch of Reionization (EoR). However, the non-Gaussian nature of the 21 cm signal along with the huge amount of data generated from these surveys will require more advanced techniques capable to efficiently extract the necessary information to constrain the Reionization History of the Universe. In this paper we present the use of Bayesian Neural Networks (BNNs) to predict the posterior distribution for four astrophysical and cosmological parameters. Besides achieving state-of-the-art prediction performances, the proposed methods provide accurate estimation of parameters uncertainties and infer correlations among them. Additionally, we demonstrate the advantages of Normalizing Flows (NF) combined with BNNs, being able to model more complex output distributions and thus capture key information as non-Gaussianities in the parameter conditional density distribution for astrophysical and cosmological dataset. Finally, we propose novel calibration methods employing Normalizing Flows after training, to produce reliable predictions, and we demonstrate the advantages of this approach both in terms of computational cost and prediction performances.
description: 17 pages, 5 figures. arXiv admin note: substantial text overlap with arXiv:2005.02299
Interaction between NCX and SERPA in Ca²⁺ signaling in human endothelial cells
Creators: name: Chan, Lally Lai Yee
Publisher: name: University of British Columbia
Year: 2009

description: The interaction between sodium-calcium-exchanger (NCX) and the endoplasmic reticulum (ER) with respect to Ca²⁺ signaling was studied using fura-2 fluorescence imaging microscopy in human endothelial cells. The inflammatory agonist histamine was used to increase the intracellular Ca²⁺ concentration. Under resting conditions, the endothelial NCX serves to unload some of the Ca²⁺ content accumulated in the ER. This unloading is important in order to maintain the buffer barrier function of the peripheral ER. Application of histamine (1 uM) in the presence of extracellular Ca²⁺ caused a long lasting Ca²⁺ response. This maintained response is dependent on the state of ER Ca²⁺ content, which is at least partly refilled by Ca²⁺ entry via NCX working in the reverse mode during the course of agonist stimulation. After cessation of agonist stimulation, a major part of the increased Ca²⁺ is cleared by sarcoplasmic/endoplasmic reticulum Ca²⁺ - ATPase (SERCA) and NCX working in a serial configuration. In summary, in human endothelial cells, NCX can unload or refill the ER and thereby modulate the Ca²⁺ level.
Materials preparation, single crystal growth, and the phase diagram of the cuprate high temperature superconductor La1.6-xNd0.4SrxCuO4
Creators: name: Dragomir, Mirela
name: Ma, Qianli
name: Clancy, J. Patrick
name: Ataei, Amirreza
name: Dube, Paul A.
name: Sharma, Sudarshan
name: Huq, Ashfia
name: Dabkowska, Hanna A.
name: Taillefer, Louis
name: Gaulin, Bruce D.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: One branch of the La-214 family of cuprate superconductors, La1.6-xNd0.4SrxCuO4 (Nd-LSCO), has been of significant and sustained interest, in large part because it displays the full complexity of the phase diagram for canonical hole-doped, high Tc superconductivity, while also displaying relatively low superconducting critical temperatures. The low superconducting Tc's imply that experimentally accessible magnetic fields can suppress the superconductivity to zero temperature. In particular, this has enabled various transport and thermodynamic studies of the T = 0 ground state in Nd-LSCO, free of superconductivity, across the critical doping p* = 0.23 where the pseudogap phase ends. The strong dependence of its superconducting properties on its crystal symmetry has itself motivated careful studies of the Nd-LSCO structural phase diagram. This paper provides a systematic study and summary of the materials preparation and characterization of both single crystal and polycrystalline samples of Nd-LSCO. Single-phase polycrystalline samples with x spanning the range from 0.01 to 0.40 have been synthesized, and large single crystals of Nd-LSCO for select x across the region (0.07, 0.12, 0.17, 0.19, 0.225, 0.24, and 0.26) were grown by the optical floating zone method. Systematic neutron and X-ray diffraction studies on these samples were performed at both low and room temperatures, 10 K and 300 K, respectively. These studies allowed us to follow the various structural phase transitions and propose an updated structural phase diagram for Nd-LSCO. In particular, we found that the low-temperature tetragonal (LTT) phase ends at a critical doping pLTT = 0.255(5), clearly separated from p*.
description: 31 pages, 15 figures
The Impact of Biofuels Policy on Agribusiness Stock Prices
Creators: name: Tepe, Fatma Sine
name: Du, Xiaodong
name: Hennessy, David A.
name: Tepe, Fatma Sine
name: Du, Xiaodong
name: Hennessy, David A.
Publisher: name: Unknown
Year: 2010
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Agricultural Finance
subject: Biofuels policy
subject: excess stock returns
subject: GARCH effect
subject: linear factor model.

description: Corn markets are important for many industries. These include the seed, fertilizer, meat production/processing and agricultural machinery sectors, all of which are highly concentrated. Oligopoly theory suggests that corn input and field equipment suppliers likely benefit from policies that support corn markets, such as U.S. biofuels policy, while meat companies likely lose. This study investigates the impact of biofuels policy on U.S. agribusiness stock prices. Corn futures prices are found to have a structural change in November 2006, consistent with the expansion of U.S. biofuels policy support. A linear two-factor (S&P500 and corn prices) equilibrium asset pricing model is estimated on two subsamples, one before and one after the estimated change point. Conditional heteroskedasticity in stock returns is accounted for using a GARCH(1,1) model. In the more recent period, corn price increases are found to have positive effects on excess stock returns for seed, fertilizer and machinery companies, while the impact on meat companies is negative. The results may be interpreted as evidence that crop input suppliers gain from U.S. biofuels policies while meat processors lose.
Diffusive Shock Acceleration in Unmodified Relativistic, Oblique Shocks
Creators: name: Ellison, Donald C.
name: Double, Glen P.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present results from a fully relativistic Monte Carlo simulation of diffusive shock acceleration (DSA) in unmodified shocks. The computer code uses a single algorithmic sequence to smoothly span the range from nonrelativistic speeds to fully relativistic shocks of arbitrary obliquity, providing a powerful consistency check. While known results are obtained for nonrelativistic and ultra-relativistic parallel shocks, new results are presented for the less explored trans- relativistic regime and for oblique, fully relativistic shocks. We find, for a wide trans-relativistic range extending to shock Lorentz factors >30, that the particle spectrum produced by DSA varies strongly from the canonical f(p) proportional to p^{-4.23} spectrum known to result in ultra-relativistic shocks. Trans- relativistic shocks may play an important role in gamma-ray bursts and other sources and most relativistic shocks will be highly oblique.
description: Accepted for publication in Astroparticle Physics, August 2004, 22 pages, 14 figures
Distortions in Incentives for Production of Major Crops in Pakistan: Recent Trends and Emerging Challenges
Creators: name: Salam, Abdul
name: Salam, Abdul
Publisher: name: Unknown
Year: 2010
Subjects: Crop Production/Industries

description: Domestic production of wheat, rice, cotton and sugarcane has experienced severe implicit taxation, averaging $1.72 billion per year during 2006-08. These distortions to producer incentives, which have resulted in huge resource transfers, must be removed if Pakistan is to address the recurring crises afflicting the crop sector, alleviate poverty, and achieve sustainable development. The institutional capacity to conduct in-depth policy analysis must also be strengthened.
The place and value of a heritage language in the lives of Japanese Canadians
Creators: name: Takei, Naoko
Publisher: name: University of British Columbia
Year: 2009

description: This study explores the perceptions that Japanese Canadians hold about their heritage language. Their perceptions could be influenced by internal factors (personal events in their lives), and external factors (events that have occurred in the world around them, outside of their realm of control). Identifying their perceptions and the influential factors in the shaping of them, the study ultimately investigates the place and value of their heritage language in the lives of Japanese Canadians. The participants in this study are Nisei (second generation) and Sansei (third generation) Japanese Canadians. They were selected to reflect two unique characteristics associated with their age, and the world events they have been exposed to. Most studies of heritage language speakers have been conducted on school-aged subjects. In order to examine experiences with language as more than an academic subject, the participants in this study are all adults who have not only completed their schooling, but have had time to garner a range of life experiences after doing so. These participants are also part of a population whose families were touched directly by events associated with the Second World War and the major social reformations that occurred in its aftermath. This combination uniquely places these participants to illustrate both internal and external influence on their perceptions of their heritage language. A narrative inquiry approach is employed in this study owing to its effectiveness in addressing the complexity and richness of life stories. The stories of four focal participants, which were constructed from interviews and their own autobiographical essays are presented and briefer stories from the remaining seven participants are integrated into discussions. The findings suggest that the most important function and value heritage languages serve for the Japanese Canadians in this study is the maintenance of family connections. However, the loss of their heritage language did not immediately translate into a loss of family connections. When language loses its function as a communication tool, if the family retains their cultural values, the symbolic functions of the language can continue to be maintained among family members who share the same culture. A loss of both heritage language and culture can devastate a family relationship. The reciprocal roles of family (in maintaining heritage language), and heritage language (in maintaining family connections) is the focus for discussion in this paper.
Gluino decays with heavier scalar superpartners
Creators: name: Toharia, Manuel
name: Wells, James D.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We compute gluino decay widths in supersymmetric theories with arbitrary flavor and CP violation angles. Our emphasis is on theories with scalar superpartner masses heavier than the gluino such that tree-level two-body decays are not allowed, which is relevant, for example, in split supersymmetry. We compute gluino decay branching fractions in several specific examples and show that it is plausible that the only accessible signal of supersymmetry at the LHC could be four top quarks plus missing energy. We show another example where the only accessible signal for supersymmetry is two gluon jets plus missing energy.
description: 17 pages, 8 figures. Added references and minor typos and errors corrected (no change in numerical results)
Sudan’s Proposal to Accede to the WTO: Impacts on Agricultural Markets
Creators: name: Karim, Imad Eldin Elfadil Abdel
name: Abler, David G.
name: Karim, Imad Eldin Elfadil Abdel
name: Abler, David G.
Publisher: name: Unknown
Year: 2010
Subjects: International Relations/Trade

description: Sudan is currently negotiating its accession to the World Trade Organization (WTO). In order to benefit from its accession to the WTO, Sudan should reorient its agricultural policy towards increasing global competitiveness by raising agricultural productivity, reducing direct and indirect taxation of the agricultural sector, and cutting fees imposed on agricultural production and exports.
Figure S3 Genome-wide sliding window analysis of da and π. from Genome-wide patterns of divergence and introgression after secondary contact between Pungitius sticklebacks
Creators: name: Yamasaki, Yo Y.
name: Kakioka, Ryo
name: Takahashi, Hiroshi
name: Toyoda, Atsushi
name: Nagano, Atsushi J.
name: Machida, Yoshiyasu
name: Møller, Peter R.
name: Kitano, Jun
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Evolutionary Biology
subject: 60408 Genomics

description: Speciation is a continuous process. Although it is known that differential adaptation can initiate divergence even in the face of gene flow, we know relatively little about the mechanisms driving complete reproductive isolation and the genomic patterns of divergence and introgression at the later stages of speciation. Sticklebacks contain many pairs of sympatric species differing in levels of reproductive isolation and divergence history. Nevertheless, most previous studies have focused on young species pairs. Here, we investigated two sympatric stickleback species, Pungitius pungitius and P. sinensis, whose habitats overlap in eastern Hokkaido; these species show hybrid male sterility, suggesting that they may be at a late stage of speciation. Our demographic analysis using whole-genome sequence data showed that these species split 1.73 Ma and came into secondary contact 37 200 years ago after a period of allopatry. This long period of allopatry might have promoted the evolution of intrinsic incompatibility. Although we detected on-going gene flow and signatures of introgression, overall genomic divergence was high, with considerable heterogeneity across the genome. The heterogeneity was significantly associated with variation in recombination rate. This sympatric pair provides new avenues to investigate the late stages of the stickleback speciation continuum.This article is part of the theme issue ‘Towards the completion of speciation: the evolution of reproductive isolation beyond the first barriers’.
Service Delivery in Rural Municipalities: Privatize, Cooperate, or Go It Alone?
Creators: name: Halstead, John M.
name: Mohr, Robert D.
name: Deller, Steven C.
name: Halstead, John M.
name: Mohr, Robert D.
name: Deller, Steven C.
Publisher: name: Unknown
Year: 2010
Subjects: subject: Community/Rural/Urban Development
subject: Public Economics
subject: privatization
subject: municipal services
subject: cooperation

description: Choices in production and contracting arrangements for a wide range of services were studied using data from approximately 1,000 small, mostly rural municipalities from Illinois, New Hampshire and Wisconsin. Results suggest the use of both for-profit contractors and cooperative agreements with other governments correlate negatively with population. Small municipalities are less likely to use competitive bidding processes, compare costs between production options, or report that privatization produces savings. Median income, rural geography, and ideology show statistically-significant associations with contracting choices. Respondents generally consider themselves ―satisfied‖ with services provided by contract, although satisfaction levels are lower than those associated with self-provision. Satisfaction associated with services provided by other governments is lower than satisfaction with services provided by private contractors, suggesting no tradeoff in service quality directly attributable to ―for-profit‖ contractors.
The evolution of neutral hydrogen over the past 11 Gyr via HI 21 cm absorption
Creators: name: Grasha, Kathryn
name: Darling, Jeremy
name: Leroy, Adam K.
name: Bolatto, Alberto D.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present the results of a blind search for intervening HI 21 cm absorption toward 260 radio sources in the redshift range 0
description: 21 pages, 8 figures, 4 tables, accepted for publication in MNRAS
Cold dilute neutron matter on the lattice II: Results in the unitary limit
Creators: name: Lee, Dean
name: Schaefer, Thomas
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: This is the second of two papers which investigate cold dilute neutron matter on the lattice using pionless effective field theory. In the unitary limit, where the effective range is zero and scattering length is infinite, simple scaling relations relate thermodynamic functions at different temperatures. When the second virial coefficient is properly tuned, we find that the lattice results obey these scaling relations. We compute the energy per particle, pressure, spin susceptibility, dineutron correlation function, and an upper bound for the superfluid critical temperature.
description: 16 pages, 9 figures
Effects of Changes to Farm Program Payment Policies on the Distribution of Payments and Income Inequality of Farm Households
Creators: name: Durst, Ron L.
name: El-Osta, Hisham S.
name: Durst, Ron L.
name: El-Osta, Hisham S.
Publisher: name: Unknown
Year: 2010
Subjects: subject: Agricultural and Food Policy
subject: Consumer/Household Economics
subject: program payments
subject: farm households
subject: income
subject: inequality
subject: payment limits
subject: adjusted gross income

description: In recent years, increasing attention has focused on the distribution of government payments, especially the share of payments that go to large farms and high-income farm households. Farm commodity program payment limits were first introduced in the Agricultural Act of 1970. The Farm Security and Rural Investment Act of 2002 for the first time supplemented program payment limits with a cap on the income farmers could earn and still receive farm program payments. The 2008 Farm Act tightened payment limitations on some producers and replaced the total adjusted gross income (AGI) limit with separate lower caps for the farm and nonfarm components of AGI. This research uses data from the Agricultural Resource Management Survey (ARMS), a survey of farm operator households conducted annually by the U.S. Dept. of Agriculture, to examine the impact of government payments and changes in payments as a result of changes to farm program policies on income inequality among farm households.
A Far-Ultraviolet Spectroscopic Survey of Luminous Cool Stars
Creators: name: Dupree, A. K.
name: Lobel, A.
name: Young, P. R.
name: Ake, T. B.
name: Linsky, J.
name: Redfield, S.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: FUSE ultraviolet spectra of 8 giant and supergiant stars reveal that high temperature (3 X 10^5 K) atmospheres are common in luminous cool stars and extend across the color-magnitude diagram from Alpha Car (F0 II) to the cool giant Alpha Tau (K5 III). Emission present in these spectra includes chromospheric H-Lyman Beta, Fe II, C I, and transition region lines of C III, O VI, Si III, Si IV. Emission lines of Fe XVIII and Fe XIX signaling temperatures of ~10^7 K and coronal material are found in the most active stars, Beta Cet and 31 Com. A short-term flux variation, perhaps a flare, was detected in Beta Cet during our observation. Stellar surface fluxes of the emission of C III and O VI are correlated and decrease rapidly towards the cooler stars, reminiscent of the decay of magnetically-heated atmospheres. Profiles of the C III (977A) lines suggest that mass outflow is underway at T~80,000 K, and the winds are warm. Indications of outflow at higher temperatures (3 X 10^5K) are revealed by O VI asymmetries and the line widths themselves. High temperature species are absent in the M-supergiant Alpha Ori. Narrow fluorescent lines of Fe II appear in the spectra of many giants and supergiants, apparently pumped by H Lyman Alpha, and formed in extended atmospheres. Instrumental characteristics that affect cool star spectra are discussed.
description: Accept for publication in The Astrophysical Journal; 22 pages of text, 23 figures and 8 tables
Einzüge-Buch
Creators: name: W. Sarasin & Co
Publisher: name: [s.n.]
Year: 1898

description: Trägermaterial: Papier, Textilie
description: Deutsch
description: Verzeichnung=Description=Inventaire 05.10.2022 Automatisierter Import Archivbestand
description: Verzeichnung=Description=Inventaire ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Detailliert
Improving accuracy of the numerical solution of Maxwell's equations by processing edge singularities of the electromagnetic field
Creators: name: Semenikhin, Igor
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: In this paper we present a methodology for increasing the accuracy and accelerating the convergence of numerical methods for solution of Maxwell's equations in the frequency domain by taking into account the be-havior of the electromagnetic field near the geometric edges of wedge-shaped structures. Several algorithms for incorporating treatment of singularities into methods for solving Maxwell's equations in two-dimensional structures by the examples of the analytical modal method and the spectral element method are discussed. In test calculations, for which we use diffraction gratings, the significant accuracy improvement and convergence ac-celeration were demonstrated. In the considered cases of spectral methods an enhancement of convergence from algebraic to exponential or close to exponential is observed. Diffraction efficiencies of the gratings, for which the conventional methods fail to converge due to the special values of permittivities, were calculated.
description: 40 pages, 17 figures, 2 tables
Heavy quark spin selection rule and the properties of the X(3872)
Creators: name: Voloshin, M. B.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The properties of the resonance X(3872) are discussed under the assumption that this resonance is dominantly a `molecular' $J^{PC}=1^{++}$ state of neutral $D$ and $D^*$ mesons. It is argued that in these properties should dominate the states with the total spin of the charmed quark-antiquark pair equal to one. As a practical application of this observation the ratio of the rates of the decays $X \to π^0 χ_{cJ}$ for different $J$ is predicted. It is also pointed out that the total rate of these decays is likely to be comparable to that of the observed transitions $X \to π^+ π^- Jψ$ and $X \to π^+ π^- π^0 Jψ$. The decays of the X into light hadrons and its production in hadronic processes are also briefly discussed.
description: 7 pages
Development of Bubble Chambers With Enhanced Stability and Sensitivity to Low-Energy Nuclear Recoils
Creators: name: Bolte, W. J.
name: Collar, J. I.
name: Crisler, M.
name: Hall, J.
name: Holmgren, D.
name: Nakazawa, D.
name: Odom, B.
name: O'Sullivan, K.
name: Plunkett, R.
name: Ramberg, E.
name: Raskin, A.
name: Sonnenschein, A.
name: Vieira, J. D.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The viability of using a Bubble Chamber for rare event searches and in particular for the detection of dark matter particle candidates is considered. Techniques leading to the deactivation of inhomogeneous nucleation centers and subsequent enhanced stability in such a detector are described. Results from prototype trials indicate that sensitivity to low-energy nuclear recoils like those expected from Weakly Interacting Massive Particles can be obtained in conditions of near total insensitivity to minimum ionizing backgrounds. An understanding of the response of superheated heavy refrigerants to these recoils is demonstrated within the context of existing theoretical models. We comment on the prospects for the detection of supersymmetric dark matter particles with a large $CF_{3}I$ chamber.
description: 4 pages, 3 figures. Submitted to Phys. Rev. Lett
Estimating the Willingness-to-Pay for Water in Georgia
Creators: name: Elnagheeb, Abdelmoneim H.
name: Jordan, Jeffrey L.
name: Elnagheeb, Abdelmoneim H.
name: Jordan, Jeffrey L.
Publisher: name: Unknown
Year: 1997
Subjects: subject: Agribusiness
subject: Demand and Price Analysis
subject: Environmental Economics and Policy
subject: Dichotomous contingent valuation
subject: Public water supply
subject: Water pricing

description: In this paper, data from a 1992 telephone survey of Georgia residents were used to study people’s willingness-to-pay (WTP) for water as a commodity. A dichotomous contingent valuation method was employed to estimate the marginal scarcity rent of water. Results indicated that the average WTP was $15.10 above the current monthly water cost, or about 81 percent of current bills. The aggregate WTP for all of Georgia was estimated to be nearly $393 million, suggesting that water is underpriced.
An Economic Evaluation of Adoption of the Conservation Compliance Program: A Stochastic Dominance Approach
Creators: name: Govindasamy, Ramu
name: Cochran, Mark J.
name: Govindasamy, Ramu
name: Cochran, Mark J.
Publisher: name: Unknown
Year: 1997
Subjects: subject: Agribusiness
subject: Environmental Economics and Policy
subject: Research Methods/ Statistical Methods
subject: conservation compliance
subject: Stochastic dominance
subject: Adoption
subject: Risk premium
subject: Erosion

description: Using stochastic dominance, this paper examines the adoption of the Conservation Compliance Program (CCP) in twelve Iowa soil types. Subsidies necessary to compensate producers for the increased risk of compliance strategies are estimated. Results indicate that to promote voluntary compliance with the CCP, the government should provide a subsidy of between $4.55 to $19.88 per acre, depending on the soil type.
Medium effects on the selection of sequences folding into stable proteins in a simple model
Creators: name: Li, You-Quan
name: Ji, Yong-Yun
name: Mao, Jun-Wen
name: Tang, Xiao-Wei
Publisher: name: arXiv
Year: 2004
Subjects: subject: Biomolecules (q-bio.BM)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: We study the medium effects on the selection of sequences in protein folding by taking account of the surface potential in HP-model. Our analysis on the proportion of H and P monomers in the sequences gives a direct interpretation that the lowly designable structures possess small average gap. The numerical calculation by means of our model exhibits that the surface potential enhances the average gap of highly designable structures. It also shows that a most stable structure may be no longer the most stable one if the medium parameters changed.
description: 4 pages, 4 figures
Juvencius
Creators: name: Wackernagel, Rudolf
Publisher: name: [s.n.]
Year: 1896

description: Unveröffentlichte Novelle von Rudolf Wackernagel. Der Autograph ist datiert auf Juni 1896 und ist Wackernagels damals 11jähriger Tochter Lili (Elisabeth) gewidmet. In der Regel sind nur die Rectoseiten der Hefte beschrieben, ausser im Fall von grösseren Korrekturen, die jeweils auf der gegenüberliegenden Versoseite angebracht wurden (z.B. in Heft 2, 57v-59r). Der Text erzählt die Geschichte des Jünglings Juvencius, der in der Einöde des Waldes aufwächst und den Drang verspürt, auszuziehen und Ritter zu werden. In seiner Unwissenheit und Naivität macht er sich zuerst zum Narren und scheitert. Daraufhin kehrt er frustriert in seine Heimat zurück, wo ihm ein Einsiedler rät, erneut auszuziehen und das Leben zu finden.
description: Rudolf Wackernagel
description: Buchbinderei Beat Gschwind Kauf 12.4.2024 2024, 13H Öffentliche Bibliothek der Universität Basel
description: Deutsch
description: Thommen, Rudolf. - Rudolf Wackernagel. - In: Basler Jahrbuch 1926, S. 1-43, hier S. 43
description: Verzeichnung=Description=Inventaire Juni 2024 HAN-Katalogisierungsregeln Minimalaufnahme nach Autopsie Studer
description: Digitalisierung=Digitization=Numérisation Februar 2025 TIFF
description: Erschliessungsniveau Minimalniveau
Optimal control of atmospheric pollution because of urban traffic flow by means of Stackelberg strategies
Creators: name: García-Chan, N.
name: Alvarez-Vázquez, L. J.
name: Martínez, A.
name: Vázquez-Méndez, M. E.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optimization and Control (math.OC)
subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 90C29, 90B50, 49J20

description: Two major problems in modern cities are air contamination and road congestion. They are closely related and present a similar origin: traffic flow. To face these problems, local governments impose traffic restrictions to prevent the entry of vehicles into sensitive areas, with the final aim of dropping down air pollution levels. However, these restrictions force drivers to look for alternative routes that usually generate congestions, implying both longer travel times and higher levels of air pollution. In this work, combining optimal control of partial differential equations and computational modelling, we formulate a multi-objective control problem with air pollution and drivers' travel time as objectives and look for its optimal solutions in the sense of Stackelberg. In this problem, local government (the leader) implements traffic restrictions meanwhile the set of drivers (the follower) acts choosing travel preferences against leader constraints. Numerically, the discretized problem is solved by combining genetic-elitist algorithms and interior-point methods, and computational results for a realistic case posed in the Guadalajara Metropolitan Area (Mexico) are shown.
description: 20 pages, 17 figures, 3 algorithms, research paper
The Kontsevich Connection on the Moduli Space of FZZT Liouville Branes
Creators: name: Giusto, Stefano
name: Imbimbo, Camillo
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We point out that insertions of matrix fields in (connected amputated) amplitudes of (generalized) Kontsevich models are given by covariant derivatives with respect to the Kontsevich moduli. This implies that correlators are sections of symmetric products of the (holomorphic) tangent bundle on the (complexified) moduli space of FZZT Liouville branes. We discuss the relation of Kontsevich parametrization of moduli space with that provided by either the (p,1) or the (1,p) boundary conformal field theories. It turns out that the Kontsevich connection captures the contribution of contact terms to open string amplitudes of boundary cosmological constant operators in the (1,p) minimal string models. The curvature of the connection is of type (1,1) and has delta-function singularities at the points in moduli space where Kontsevich kinetic term vanishes. We also outline the extention of our formalism to the c=1 string at self-dual radius and discuss the problems that have to be understood to reconciliate first and second quantized approaches in this case.
description: 34 pages, 2 eps figures, LaTex; typos corrected (including title); more typos fixed, including those in Eqs.(72) and (132)
Khovanov-Rozansky Homology and Topological Strings
Creators: name: Gukov, Sergei
name: Schwarz, Albert
name: Vafa, Cumrun
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Geometric Topology (math.GT)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We conjecture a relation between the sl(N) knot homology, recently introduced by Khovanov and Rozansky, and the spectrum of BPS states captured by open topological strings. This conjecture leads to new regularities among the sl(N) knot homology groups and suggests that they can be interpreted directly in topological string theory. We use this approach in various examples to predict the sl(N) knot homology groups for all values of N. We verify that our predictions pass some non-trivial checks.
description: 25 pages, 2 figures, harvmac; minor corrections, references added
ANÁLISE DA CADEIA DE VALOR E DOS CUSTOS DAS RAÇÕES DE UMA AGROINDÚSTRIA PROCESSADORA DE AVES
Creators: name: Grunow, Aloisio
name: Gallon, Alessandra Vasconcelos
name: Beuren, Ilse Maria
name: Grunow, Aloisio
name: Gallon, Alessandra Vasconcelos
name: Beuren, Ilse Maria
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agribusiness
subject: Agricultural Finance
subject: Industrial Organization
subject: value chain
subject: animal feed costs
subject: poultry production.

description: In a competitive environment, it is not enough to simply coordinate and promote the efficiency of a company’s internal activities. It is also necessary to ensure that the activities which form part of the company’s “value chain” are organized in a competitive way. From this perspective, the objective of this article is to analyze the “value chain” of poultry production and the cost of animal feed in every phase of the Seara Alimentos S.A chain. The methodology consisted of exploratory research in a case study using a predominantly qualitative approach. The results of the study are the stages of the productive cycle and the costs of the animal feed throughout the “value chain” in a poultry agribusiness. It was concluded that estimating the production’s “value chain” and the costs of animal feed, which are relevant elements in the overall cost of poultry production, favors the search for improvements in the “chain’s” global results, particularly the promotion of partnerships and cost reduction.
Supplementary information from The evolution of strong reproductive isolation between sympatric intertidal snails
Creators: name: Stankowski, Sean
name: Westram, Anja M.
name: Zagrodzka, Zuzanna B.
name: Eyres, Isobel
name: Broquet, Thomas
name: Johannesson, Kerstin
name: Butlin, Roger K.
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Evolutionary Biology
subject: 60408 Genomics

description: The evolution of strong reproductive isolation (RI) is fundamental to the origins and maintenance of biological diversity, especially in situations where geographical distributions of taxa broadly overlap. But what is the history behind strong barriers currently acting in sympatry? Using whole-genome sequencing and SNP genotyping, we inferred (i) the evolutionary relationships, (ii) the strength of RI, and (iii) the demographic history of divergence between two broadly sympatric taxa of intertidal snail. Despite being cryptic, based on external morphology, Littorina arcana and L. saxatilis differ in their mode of female reproduction (egg-laying versus brooding), which may generate a strong post-zygotic barrier. We show that egg-laying and brooding snails are closely related, but genetically distinct. Genotyping of 3080 snails from three locations failed to recover any recent hybrid or backcrossed individuals, confirming that RI is strong. There was, however, evidence for a very low level of asymmetrical introgression, suggesting that isolation remains incomplete. The presence of strong, asymmetrical RI was further supported by demographic analysis of these populations. Although the taxa are currently broadly sympatric, demographic modelling suggests that they initially diverged during a short period of geographical separation involving very low gene flow. Our study suggests that some geographical separation may kick-start the evolution of strong RI, facilitating subsequent coexistence of taxa in sympatry. The strength of RI needed to achieve sympatry and the subsequent effect of sympatry on RI remain open questions.This article is part of the theme issue ‘Towards the completion of speciation: the evolution of reproductive isolation beyond the first barriers'.
Eta photoproduction on the neutron at GRAAL: Measurement of the differential cross section
Creators: name: Rebreyend, D.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: In this contribution, we will present our first preliminary measurement of the differential cross section for the reaction gamma+n->eta+n. Comparison of the reactions gamma+p->eta+p for free and bound proton (D2 target) will also be discussed.
description: 6 pages, 4 figures, Proceedings of the 10th International Symposium on Meson-Nucleon Physics and the Structure of the Nucleon, August 29-September 4 2004, Beijing, China
ANÁLISE DAS TRANSAÇÕES NA CADEIA PRODUTIVA DE ENERGIA DE BIOMASSA DE ORIGEM FLORESTAL
Creators: name: Simioni, Flavio Jose
name: Hoeflich, Vitor Afonso
name: Siqueira, Elisabete Stradiotto
name: Simioni, Flavio Jose
name: Hoeflich, Vitor Afonso
name: Siqueira, Elisabete Stradiotto
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agribusiness
subject: Agricultural Finance
subject: Industrial Organization
subject: bioenergy
subject: forest production
subject: transaction cost

description: The aim of this paper was to analyze the characteristics of the transactions between economic agents to identify their attributes and to determine their impacts on the governance structure of the forest biomass energy production chain in Lages, Santa Catarina state. The Economic Transaction Cost (ETC) was used as theoretical support. Fifteen entrepreneurs or company directors were interviewed to identify and characterize the transactions between the chain’s segments and to analyze the governance structure adopted by the agents. The companies involved in this study are located in twenty four municipal districts in the region. Analysis of the transactions between the agents demonstrated an increasing search for contracts, determined mainly by the need to guarantee the supply of raw material. This governance structure tends to be increasingly adopted by different segments of the production chain, especially in transactions involving residues, either for energy generation or other more noble uses.
Mass customized child care centres
Creators: name: Boccaletti, Stefania
Publisher: name: University of British Columbia
Year: 2009

description: In the past few decades the familiar structure of the society is radically changed. Easier and faster migration across countries, the disassemble of the nucleus of families and the raising number of women moving into the labour force have pushed parents to find solutions for the care of their children outside the structure of the family. What once was considered either a privilege for the richest or a forced solution for the poorest is nowadays a need and a right for each member of the society: the creation of quality childcare centres becomes crucial for the well-being and future development of society. At the same time, researches show the importance of the built environment in children cognitive development. Quality spaces provide children with intellectual and social enhancement, which sets the foundations for lifelong learning, behaviour and health. Since the organization and design of spaces in a childcare centre can advance and guide children's learning experience and development as well as communicate to them feelings, values and rules, architecture becomes one of the fundamental languages of children learning process. The collaborative nature of the design of a childcare centre, the wide variety of intervention (from simple infillings to the construction of a new building) and the need to create sensorial and spatial richness, point to a design process able to generate adaptable and flexible spaces that are created through a close relationship with the users. The focus isn't anymore on the creation of a final and invariable product but rather on the design of a system that will define a range of product solutions. To respond to the issues at stake, the research is oriented toward Mass Customization and the application of new technology to architectural production in order to create a system able to respond to the complex and ever changing nature of the typology analysed.
Kopierbuch in französischer Sprache
Creators: name: Forcart-Weiss & Söhne
Publisher: name: [s.n.]
Year: 1830

description: Darin: Register
description: Französisch
description: Verzeichnung=Description=Inventaire 2014 ISAD(G) / HAN Katalogisierungsregeln für Archivbestände Sebastian Preher