cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Schottky defect formation energy in MgO calculated by diffusion Monte Carlo
Creators: name: Alfè, D.
name: Gillan, M. J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The energetics of point defects in oxide materials plays a major role in determining their high-temperature properties, but experimental measurements are difficult, and calculations based on density functional theory (DFT) are not necessarily reliable. We report quantum Monte Carlo (QMC) calculations of the formation energy $E_{\rm S}$ of Schottky defects in MgO, which demonstrate the feasibility of using this approach to overcome the deficiencies of DFT. In order to investigate system-size errors, we also report DFT calculations of $E_{\rm S}$ on repeating cells of up to $\sim 1000$ atoms, which indicate that QMC calculations on systems of only 54 atoms should yield high precision. The DFT calculations also provide the relaxed structures used in the variational and diffusion Monte Carlo calculations. For MgO, we find $E_{\rm S}$ to be in close agreement with results from DFT and from model interaction potentials, and consistent with the scattered experimental values. The prospects for applying the same approach to transition metal oxides such as FeO are indicated.
description: 4 pages, one figure
A New Method for Determining gamma from B-> pi pi Decays
Creators: name: Bauer, Christian W.
name: Rothstein, Ira Z.
name: Stewart, Iain W.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Factorization based on the soft-collinear effective theory (SCET) can be used to reduce the number of hadronic parameters in an isospin analysis of B-> pi pi decays by one. This gives a theoretically precise method for determining the CP violating phase gamma by fitting to the B-> pi pi data without C_{pi0 pi0}. SCET predicts that gamma lies close to the isospin bounds. With the current world averages we find gamma=75^o \pm 2^o {}^{+9^o}_{-13^o}, where the uncertainties are theoretical, then experimental.
description: 4 pages, journal version, fig.4 fixed
The Export-Production Decision of Chilean Farmers: The Case of Blueberry Producers
Creators: name: Echeverria, Rodrigo
name: Gopinath, Munisamy
name: Moreira, Victor H.
name: Cortes, Pedro
name: Echeverria, Rodrigo
name: Gopinath, Munisamy
name: Moreira, Victor H.
name: Cortes, Pedro
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agricultural and Food Policy
subject: International Relations/Trade
subject: Production Economics
subject: Agricultural Trade
subject: Export Production
subject: Geography

description: This article analyzes the relative importance of producers’ attributes and farms’ geographical characteristics in the decision to produce an exportable good (blueberries) in the southern region of Chile. Using farm-level data, a logit model is estimated to identify factors influencing the export-production decision. Results show that the probability of producing blueberries increases with the educational level of producers (a proxy for productivity), the presence of irrigation and drainage systems, and the availability of labor. The last factor, which arises from the proximity to large and urbanized regions, has a stronger effect on the export-production decisions of Chilean farms than either farmers’ education or farms’ physical characteristics.
Long-distance distribution of time-bin entanglement generated in a cooled fiber
Creators: name: Takesue, Hiroki
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: This paper reports the first demonstration of the generation and distribution of entangled photon pairs in the 1.5-um band using spontaneous four-wave mixing in a cooled fiber. Noise photons induced by spontaneous Raman scattering were suppressed by cooling a dispersion shifted fiber with liquid nitrogen, which resulted in a significant improvement in the visibility of two-photon interference. By using this scheme, time-bin entangled qubits were successfully distributed over 60 km of optical fiber with a visibility of 76%, which was obtained without removing accidental coincidences.
description: 11 pages, 3 figures
Feedback-assisted Femtosecond Pulsed Laser Ablation of Non-Planar Metal Surfaces: Fabrication of Optical Apertures on Tapered Fibers for Optical Neural Interfaces
Creators: name: Balena, Antonio
name: Bianco, Marco
name: Pisano, Filippo
name: Pisanello, Marco
name: Sileo, Leonardo
name: Sabatini, Bernardo
name: De Vittorio, Massimo
name: Pisanello, Ferruccio
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applied Physics (physics.app-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We propose a feedback-assisted direct laser writing method to perform laser ablation of fiber optics devices in which their light-collection signal is used to optimize their properties. A femtosecond-pulsed laser beam is used to ablate a metal coating deposited around a tapered optical fiber, employed to show the suitability of the approach to pattern devices with small radius of curvature. During processing, the same pulses generate two-photon fluorescence in the surrounding environment and the signal is monitored to identify different patterning regimes over time through spectral analysis. The employed fs beam mostly interacts with the metal coating, leaving almost intact the underlying silica and enabling fluorescence to couple with a specific subset of guided modes, as verified by far-field analysis. Although the method is described here for tapered optical fibers used to obtain efficient light collection in the field of optical neural interfaces, it can be easily extended to other waveguides-based devices and represents a general approach to support the implementation closed-loop laser ablation system of fiber optics.
description: 15 pages, 5 figures
To fence or not to fence: A partial probit analysis
Creators: name: Paragahawewa, Upananda Herath
name: Paragahawewa, Upananda Herath
Publisher: name: Unknown
Year: 2009
Subjects: subject: Environmental Economics and Policy
subject: Institutional and Behavioral Economics
subject: Land Economics/Use
subject: Research and Development/Tech Change/Emerging Technologies
subject: EBP Adoption
subject: Partial probit analysis

description: Based on the results of a probit model estimated from a survey of 1625 farmers from seven major dairying regions in New Zealand, farmers’ attitudes (perception about the overall benefits) appear to be are a major governing factor of waterway fencing in all regions. While fencing in Northland and West Coast regions was lower than elsewhere, owner/operators in those regions tended to fence more than farmers with other types of ownership structures. Environmental issues also appeared to be important; however the level of environmental awareness did not reflect the actual degree of fencing.
Additional file 3 of Medical termination for pregnancy in early first trimester (≤ 63 days) using combination of mifepristone and misoprostol or misoprostol alone: a systematic review
Creators: name: Abubeker, Ferid A.
name: Lavelanet, Antonella
name: Rodriguez, Maria I.
name: Kim, Caron
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Pharmacology
subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Cancer
subject: Science Policy

description: Additional file 3 Table S1. Regimens for medical abortion ≤63 days. Table S2. Comparison of misoprostol doses in combined regimen. Table S3. Comparison of dosing intervals between mifepristone and misoprostol in combined regimen. Table S4. Comparison of misoprostol routes in combined mifepristone-misoprostol regimen. Table S5. Comparison of different misoprostol only regimens. Table S6. Comparison of medical and surgical management- Medical management with 800 μg vaginal misoprostol compared with surgical management.
Growth-Driven Percolations: The Dynamics of Community Formation in Neuronal Systems
Creators: name: Costa, Luciano da Fontoura
name: Coelho, Regina Celia
Publisher: name: arXiv
Year: 2004
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: The quintessential property of neuronal systems is their intensive patterns of selective synaptic connections. The current work describes a physics-based approach to neuronal shape modeling and synthesis and its consideration for the simulation of neuronal development and the formation of neuronal communities. Starting from images of real neurons, geometrical measurements are obtained and used to construct probabilistic models which can be subsequently sampled in order to produce morphologically realistic neuronal cells. Such cells are progressively grown while monitoring their connections along time, which are analysed in terms of percolation concepts. However, unlike traditional percolation, the critical point is verified along the growth stages, not the density of cells, which remains constant throughout the neuronal growth dynamics. It is shown, through simulations, that growing beta cells tend to reach percolation sooner than the alpha counterparts with the same diameter. Also, the percolation becomes more abrupt for higher densities of cells, being markedly sharper for the beta cells.
description: 8 pages, 10 figures
Answer to the challenges of the 21st century in the Hungarian pig sector
Creators: name: Balogh, Peter
name: Ertsey, Imre
name: Szucs, Istvan
name: Balogh, Peter
name: Ertsey, Imre
name: Szucs, Istvan
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agribusiness
subject: Livestock Production/Industries
subject: cooperation
subject: pig farms
subject: network

description: Whether particular countries, regions within countries, and particular societies gain or lose in the process of globalization depends on where they are in the process of agricultural transformation and to what extent they can adjust? The Hungarian pork chain faces considerable disadvantages in several aspects as opposed to competing countries. In countries with developed meat chain a powerful concentration could be observed, whereas in Hungary, although disintegration has not increased, decentralization still prevails. In our research the operation of the co-operative was modelled as a generalized network problem in 2008. The model allows the quantification of the number of pigs from given farms to slaughterhouses, the maximum revenue from sales, the threshold prices of deliveries and the analysis on the impacts that the members of co-operatives exert on sales revenues.
Similarity of Precursors in Solid-state Synthesis as Text-Mined from Scientific Literature
Creators: name: He, Tanjin
name: Sun, Wenhao
name: Huo, Haoyan
name: Kononova, Olga
name: Rong, Ziqin
name: Tshitoyan, Vahe
name: Botari, Tiago
name: Ceder, Gerbrand
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: Collecting and analyzing the vast amount of information available in the solid-state chemistry literature may accelerate our understanding of materials synthesis. However, one major problem is the difficulty of identifying which materials from a synthesis paragraph are precursors or are target materials. In this study, we developed a two-step Chemical Named Entity Recognition (CNER) model to identify precursors and targets, based on information from the context around material entities. Using the extracted data, we conducted a meta-analysis to study the similarities and differences between precursors in the context of solid-state synthesis. To quantify precursor similarity, we built a substitution model to calculate the viability of substituting one precursor with another while retaining the target. From a hierarchical clustering of the precursors, we demonstrate that "chemical similarity" of precursors can be extracted from text data. Quantifying the similarity of precursors helps provide a foundation for suggesting candidate reactants in a predictive synthesis model.
description: Chemistry of Materials (2020)
The challenge of the chiral Potts model
Creators: name: Baxter, R. J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The chiral Potts model continues to pose particular challenges in statistical mechanics: it is ``exactly solvable'' in the sense that it satisfies the Yang-Baxter relation, but actually obtaining the solution is not easy. Its free energy was calculated in 1988 and the order parameter was conjectured in full generality a year later. However, a derivation of that conjecture had to wait until 2005. Here we discuss that derivation.
description: 22 pages, 3 figures, 29 references
Evolution of the magnetic phase transition in MnO confined to channel type matrices. Neutron diffraction study
Creators: name: Golosovsky, I. V.
name: Mirebeau, I.
name: Sakhnenko, V. P.
name: Kurdyukov, D. A.
name: Kumzerov, Y. A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Neutron diffraction studies of antiferromagnetic MnO confined to MCM-41 type matrices with channel diameters 24-87 A demonstrate a continuous magnetic phase transition in contrast to a discontinuous first order transition in the bulk. The character of the magnetic transition transforms with decreasing channel diameter, showing the decreasing critical exponent and transition temperature, however the latter turns out to be above the Néel temperature for the bulk. This enhancement is explained within the framework of Landau theory taking into consideration the ternary interaction of the magnetic and associated structural order parameters.
description: 6 pages pdf file, including 4 figures, uses revtex4.cls
The Effects of Rural Infrastructure Development on Agricultural Production Technical Efficiency: Evidence from the Data of Second National Agricultural Census of China
Creators: name: Li, Zongzhang
name: Liu, Xiaomin
name: Li, Zongzhang
name: Liu, Xiaomin
Publisher: name: Unknown
Year: 2009
Subjects: subject: Community/Rural/Urban Development
subject: Productivity Analysis
subject: Rural infrastructure
subject: agricultural production
subject: technical efficiency

description: This paper studies the effects of rural infrastructure development on agricultural production technical efficiency, using data from the second agricultural census of China. Employing Data Envelopment Analysis, this paper first estimates agricultural production technical efficiency of each administrative area of China. A Tobit model is then applied to study the effects on agricultural production technical efficiency of various types of rural infrastructures. Our empirical results suggest that transportation infrastructure plays the most substantial positive role on technical efficiency, followed by vocational/technical education infrastructure, electricity facilities and water supply systems. In addition, other potential factors influencing agriculture technical efficiency include regional industrial structure, mechanical intensity, the quality of labor and geographical locations.
Driven diffusive systems of active filament bundles
Creators: name: Mohanty, P. K.
name: Kruse, K.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The cytoskeleton is an important subsystem of cells that is involved for example in cell division and locomotion. It consists of filaments that are cross-linked by molecular motors that can induce relative sliding between filaments and generate stresses in the network. In order to study the effects of fluctuations on the dynamics of such a system we introduce here a new class of driven diffusive systems mimicking the dynamics of active filament bundles where the filaments are aligned with respect to a common axis. After introducing the model class we first analyze an exactly solvable case and find condensation. For the general case we perform a mean-field analysis and study the behavior on large length scales by coarse-graining. We determine conditions for condensation and establish a relation between the hopping rates and the tension generated in the bundle.
description: 10 pages, 4 eps figures
Entanglement Hamiltonians for non-critical quantum chains
Creators: name: Eisler, Viktor
name: Di Giulio, Giuseppe
name: Tonni, Erik
name: Peschel, Ingo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the entanglement Hamiltonian for finite intervals in infinite quantum chains for two different free-particle systems: coupled harmonic oscillators and fermionic hopping models with dimerization. Working in the ground state, the entanglement Hamiltonian describes again free bosons or fermions and is obtained from the correlation functions via high-precision numerics for up to several hundred sites. Far away from criticality, the dominant on-site and nearest-neighbour terms have triangular profiles that can be understood from the analytical results for a half-infinite interval. Near criticality, the longer-range couplings, although small, lead to a more complex picture. A comparison between the exact spectra and entanglement entropies and those resulting from the dominant terms in the Hamiltonian is also reported.
description: 29 pages, 12 figures, minor changes, references added, v3: published version
‘GMO-Free’ Labels – Enhancing Transparency or Deceiving Consumers?
Creators: name: Henseleit, Meike
name: Kubitzki, Sabine
name: Henseleit, Meike
name: Kubitzki, Sabine
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agricultural and Food Policy
subject: Demand and Price Analysis
subject: Food Consumption/Nutrition/Food Safety
subject: Genetic Engineering
subject: Food Labelling
subject: Consumer Survey

description: Since most consumers particularly in industrialised countries are concerned about the application of genetic engineering in food production, producers in many nations got the opportunity to label products as free of genetically modified organisms (GMOs) by the introduction of legal regulations. Standards of these regulations for labelling food products ‘GMO-free’ usually relate to product itself, not to the process of production. Therefore, it is quite possible that consumers’ understanding of ‘GMO-free’ differs from what the label actually stands for, especially regarding animal products. We conducted a consumer survey in order to explore potential gaps between their ideas of ‘GMO-free’ food and what the label actually stands for at the example of the German regulation covering the labelling of foods as ‘GMO-free’.
Implications of the Present Bound on the Width of the Theta(1540)
Creators: name: Jaffe, R. L.
name: Jain, Ambar
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The recently reported Theta(1540) exotic baryon seems to be very narrow: Gamma(Theta)< 1 MeV according to some analyses. Using methods of low energy scattering theory, we develop expectations for the width of the Theta, an elastic resonance in KN scattering in a theory where the characteristic range of interactions is ~1 Fermi. If the Theta is a potential scattering resonance, generated by the forces in the KN channel, its width is hard to account for unless the KN-channel orbital angular momentum, l, is two or greater. If the Theta is a CDD pole, its coupling to the scattering channel is at least an order of magnitude less than the coupling of the Lambda(1520) unless l is two or greater. Either way, if the Theta proves to be in the KN s- or p-wave, new physics must be responsible for its narrow width.
description: 8 pages, 2 figures
TROPPO LoRa: TROPospheric Personal Observatory using LoRa signals
Creators: name: Zennaro, Marco
name: Pietrosemoli, Ermanno
name: Rainone, Marco
name: Trinchero, Daniele
name: Poletti, Mattia
name: Colucci, Giovanni
Publisher: name: arXiv
Year: 2020
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: With the growth of LoRa deployments there are plenty of anecdotal reports of very long wireless links, well beyond the line of sight. Most reports suggest that these links are related to anomalous tropospheric propagation. We developed a platform to study tropospheric links based on TheThingsNetwork, a popular LoRaWAN-based infrastructure. We present some preliminary results and call for the IoT community to participate in this radio propagation experiment.
Une lettre de Sévère d'Antioche à la diaconesse Anastasie
Creators: name: Chaine, Marius
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 11 Nr. 1 (1913): Oriens christianus, Band 11, Heft 1
Additional file 1 of Rationales and arguments behind the adoption of self-selection of nonprescription medicines in Denmark
Creators: name: Jacobsen, Solveig Nordahl
name: Møller-Jensen, Simone Eggert
name: Sporrong, Sofia Kälvemark
Publisher: name: figshare
Year: 2020
Subjects: subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Marine Biology
subject: Science Policy

description: Additional file 1. Documents used in document analysis. Documents used in document analysis in a chronological order. Each document has been provided with a recognition code (code), the title in original language, the author (using abbreviations), publication date, and the date that the document was debated in the Parliament.
Enacting change : a therapeutic enactment group-based program for traumatized soldiers
Creators: name: Cave, Douglas G.
Publisher: name: University of British Columbia
Year: 2009

description: During their missions, soldiers are exposed to potentially traumatizing events. Their return to civilian life is sometimes distinguished by difficulties from these mission-related traumas. These difficulties relate to social and occupational readjustment and if left untreated can result in various struggles including: aggressive behaviour, poor functioning in relationships, social isolation, poor self-esteem and depression. Therefore, building on previous research, this study, examined the changes of six male peacekeeping and combat veterans who participated in a group-based program with therapeutic enactment as a primary treatment modality for trauma reactions. The methodology for this study is a combination of qualitative and quantitative methods designed to answer the question: What is the effect of a group-based therapeutic enactment program on veterans who have experienced trauma? Narrative analysis of the 3 interview sets produced the qualitative findings and illustrate improvements in the soldiers emotional expressiveness, communication, relationships, relief from depression, increased confidence and a general decrease in trauma symptoms. Descriptive statistics were to analyse the quantitative findings of change as measured by the Trauma Symptom Inventory (TSI), the Beck Depression Inventory-II (BDI-II) and the Self-Esteem Rating Scale (SERS). The TSI, administered twice, illustrated a general decrease in trauma symptoms. The BDI-II and SERS were administered three times and demonstrate the inverse relationship between depression and self-esteem. A general trend of decreased depression with corresponding increases in self-esteem was evident. These findings have implications for the treatment of trauma generally, and soldiers specifically. Implications for group therapy, and therapeutic enactment as an effective and established group therapeutic intervention are clear.
B-physics: new states, rare decays and branching ratios in CDF
Creators: name: Krutelyov, V.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present results and prospects for searches for rare B and D meson decays with final state dimuons, including B_s\toμμ, B_d\toμμ, and D\toμμ. Upper limits on the branching fractions are compared to previous CDF measurements, recent results from the B factories and theoretical expectations. We also report on new measurements of production and decay properties of the X(3872) particle, discovered in 2003 by the Belle Collaboration. New results on the measurement of the relative branching fraction for the Cabibbo suppressed decay B^+\to J/ψπ^+ Br(B^+\to J/ψπ^+)/Br(B^+\to J/ψK^+) are presented too. The presented results are based on the analyses of 70 to 220 pb^-1 of data collected by the CDF II detector in p\bar p collisions at \sqrt{s} = 1.96 GeV at Fermilab Tevatron.
description: Presented at the 6th International Conference on Hyperons, Charm & Beauty Hadrons (BEACH04), Chicago, IL, June 27 - July 03 2004. 5 pages
Towards non-parametric fiber-specific $T_1$ relaxometry in the human brain
Creators: name: Reymbaut, A.
name: Critchley, J.
name: Durighel, G.
name: Sprenger, T.
name: Sughrue, M.
name: Bryskhe, K.
name: Topgaard, D.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Medical Physics (physics.med-ph)
subject: Image and Video Processing (eess.IV)
subject: FOS: Physical sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Purpose: To estimate fiber-specific $T_1$ values, i.e. proxies for myelin content, in heterogeneous brain tissue. Methods: A diffusion-$T_1$ correlation experiment was carried out on an in vivo human brain using tensor-valued diffusion encoding and multiple repetition times. The acquired data was inverted using a Monte-Carlo inversion algorithm that retrieves non-parametric distributions $\mathcal{P}(\mathbf{D},R_1)$ of diffusion tensors and longitudinal relaxation rates $R_1 = 1/T_1$. Orientation distribution functions (ODFs) of the highly anisotropic components of $\mathcal{P}(\mathbf{D},R_1)$ were defined to visualize orientation-specific diffusion-relaxation properties. Finally, Monte-Carlo density-peak clustering (MC-DPC) was performed to quantify fiber-specific features and investigate microstructural differences between white-matter fiber bundles. Results: Parameter maps corresponding to $\mathcal{P}(\mathbf{D},R_1)$'s statistical descriptors were obtained, exhibiting the expected $R_1$ contrast between brain-tissue types. Our ODFs recovered local orientations consistent with the known anatomy and indicated possible differences in $T_1$ relaxation between major fiber bundles. These differences, confirmed by MC-DPC, were in qualitative agreement with previous model-based works but seem biased by the limitations of our current experimental setup. Conclusions: Our Monte-Carlo framework enables the non-parametric estimation of fiber-specific diffusion-$T_1$ features, thereby showing potential for characterizing developmental or pathological changes in $T_1$ within a given fiber bundle, and for investigating inter-bundle $T_1$ differences.
description: 11 pages, 6 figures, submitted to Magnetic Resonance in Medicine (MRM) on the 14th of June 2020
Non-parametric mass reconstruction of A1689 from strong lensing data with SLAP
Creators: name: Diego, J. M.
name: Sandvik, H. B.
name: Protopapas, P.
name: Tegmark, M.
name: Benitez, N.
name: Broadhurst, T.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the mass distribution in the central area of the cluster A1689 by fitting over 100 multiply lensed images with the non-parametric Strong Lensing Analysis Package (SLAP, Diego et al. 2004). The surface mass distribution is obtained in a robust way finding a total mass of 0.25E15 M_sun/h within a 70'' circle radius from the central peak. Our reconstructed density profile fits well an NFW profile with small perturbations due to substructure and is compatible with the more model dependent analysis of Broadhurst et al. (2004a) based on the same data. Our estimated mass does not rely on any prior information about the distribution of dark matter in the cluster. The peak of the mass distribution falls very close to the central cD and there is substructure near the center suggesting that the cluster is not fully relaxed. We also examine the effect on the recovered mass when we include the uncertainties in the redshift of the sources and in the original shape of the sources. Using simulations designed to mimic the data, we identify some biases in our reconstructed mass distribution. We find that the recovered mass is biased toward lower masses beyond 1 arcmin (150 kpc) from the central cD and that in the very center we may be affected by degeneracy problems. On the other hand, we confirm that the reconstructed mass between 25'' and 70'' is a robust, unbiased estimate of the true mass distribution and is compatible with an NFW profile.
description: 11 pages, 12 figures. MNRAS submitted. A full resolution of the paper can be found in http://darwin.physics.upenn.edu/SLAP/
Additional file 1 of Analysing bioelectrical phenomena in the Drosophila ovary with genetic tools: tissue-specific expression of sensors for membrane potential and intracellular pH, and RNAi-knockdown of mechanisms involved in ion exchange
Creators: name: Schotthöfer, Susanne Katharina
name: Bohrmann, Johannes
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1: Table S1. Summary of candidate genes showing no effects in RNAi-knockdown screen. Data corresponding to Table 1.
Mapping individual differences in cortical architecture using multi-view representation learning
Creators: name: Sellami, Akrem
name: Dupé, François-Xavier
name: Cagna, Bastien
name: Kadri, Hachem
name: Ayache, Stéphane
name: Artières, Thierry
name: Takerkart, Sylvain
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: In neuroscience, understanding inter-individual differences has recently emerged as a major challenge, for which functional magnetic resonance imaging (fMRI) has proven invaluable. For this, neuroscientists rely on basic methods such as univariate linear correlations between single brain features and a score that quantifies either the severity of a disease or the subject's performance in a cognitive task. However, to this date, task-fMRI and resting-state fMRI have been exploited separately for this question, because of the lack of methods to effectively combine them. In this paper, we introduce a novel machine learning method which allows combining the activation-and connectivity-based information respectively measured through these two fMRI protocols to identify markers of individual differences in the functional organization of the brain. It combines a multi-view deep autoencoder which is designed to fuse the two fMRI modalities into a joint representation space within which a predictive model is trained to guess a scalar score that characterizes the patient. Our experimental results demonstrate the ability of the proposed method to outperform competitive approaches and to produce interpretable and biologically plausible results.
Water communities in the Republic of Macedonia: an empirical analysis of membership satisfaction and payment behaviour
Creators: name: Gorton, Matthew
name: Sauer, Johannes
name: Peshevski, Mile
name: Bosev, Dane
name: Shekerinov, Darko
name: Quarrie, Steve
name: Gorton, Matthew
name: Sauer, Johannes
name: Peshevski, Mile
name: Bosev, Dane
name: Shekerinov, Darko
name: Quarrie, Steve
Publisher: name: Unknown
Year: 2009
Subjects: subject: Community/Rural/Urban Development
subject: Environmental Economics and Policy
subject: Institutional and Behavioral Economics
subject: Irrigation
subject: Self-management
subject: Water User Associations
subject: Macedonia

description: Utilizing primary survey data, we investigate the performance of Water Communities (WCs), a form of self-managing organisation for irrigation, in the Bregalnica region of the Republic of Macedonia. While their introduction improved cost recovery, only modest changes occurred in the cost of irrigation water and many farmers remain indifferent to the WCs. Econometric analysis focuses on the decision of farmers to join a WC, determinants of farmers’ satisfaction with WCs and factors associated with changes in payment behaviour. Key determinants identified include transparency and trust regarding the conduct of WCs, cost recovery rates, farm size and irrigation costs. Membership satisfaction is an important determinant of payment behaviour.
Farm Productivity and Household Market Participation: Evidence from LSMS Data
Creators: name: Rios, Ana R.
name: Shively, Gerald E.
name: Masters, William A.
name: Rios, Ana R.
name: Shively, Gerald E.
name: Masters, William A.
Publisher: name: Unknown
Year: 2009
Subjects: subject: Consumer/Household Economics
subject: International Development
subject: Productivity Analysis
subject: Research Methods/ Statistical Methods
subject: market participation
subject: productivity
subject: multi-country sample
subject: household surveys

description: We analyze the correlation between farm productivity and market participation using comparable household data from Tanzania, Vietnam and Guatemala. Each farm’s input use and output levels provide a within-sample measure of relative productivity, which we relate to that household’s level of participation in local markets using a wide range of agricultural, demographic and infrastructural variables as controls and as instruments in two-stage regressions. Results indicate that, controlling for differences in market access and the underlying determinants of market participation, households with higher productivity have greater participation in agricultural markets. In contrast, households with greater rates of market participation do not consistently demonstrate higher levels of relative productivity. This result holds only in Vietnam and Guatemala, however. In the Tanzania sample we find no significant correlation in either direction. Combining household surveys in this way offers a promising approach to testing the robustness of key hypotheses across countries and over time.
Response of a catalytic reaction to periodic variation of the CO pressure: Increased CO_2 production and dynamic phase transition
Creators: name: Machado, Erik
name: Buendia, Gloria M.
name: Rikvold, Per Arne
name: Ziff, Robert M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We present a kinetic Monte Carlo study of the dynamical response of a Ziff-Gulari-Barshad model for CO oxidation with CO desorption to periodic variation of the CO presure. We use a square-wave periodic pressure variation with parameters that can be tuned to enhance the catalytic activity. We produce evidence that, below a critical value of the desorption rate, the driven system undergoes a dynamic phase transition between a CO_2 productive phase and a nonproductive one at a critical value of the period of the pressure oscillation. At the dynamic phase transition the period-averged CO_2 production rate is significantly increased and can be used as a dynamic order parameter. We perform a finite-size scaling analysis that indicates the existence of power-law singularities for the order parameter and its fluctuations, yielding estimated critical exponent ratios $β/ν\approx 0.12$ and $γ/ν\approx 1.77$. These exponent ratios, together with theoretical symmetry arguments and numerical data for the fourth-order cumulant associated with the transition, give reasonable support for the hypothesis that the observed nonequilibrium dynamic phase transition is in the same universality class as the two-dimensional equilibrium Ising model.
description: 18 pages, 10 figures, accepted in Physical Review E
German Rapeseed Oil and Biodiesel Pricing under Changing Market Conditions: A Markov-switching Vector Error Correction Model Approach
Creators: name: Busse, Stefan
name: Ihle, Rico
name: Busse, Stefan
name: Ihle, Rico
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agricultural and Food Policy
subject: Demand and Price Analysis
subject: Resource /Energy Economics and Policy
subject: Biodiesel
subject: cointegration
subject: nonlinear vector error-correction model
subject: regime dependent model
subject: Markov-switching

description: We analyze vertical price transmission in the German biodiesel market studying the relationship between rapeseed oil, soya oil and biodiesel prices. We focus on the period from summer 2002 to late 2007 during which the German biodiesel market developed into the largest market worldwide, mainly driven by political intervention. Tests on the adequacy of a traditional linear vector error correction model provide strong evidence against it and favor a regime-dependent model. We consider the Markov-switching vector error correction model which allows for parameter switching between regimes to be suitable for the question to be analyzed. We find two distinct regimes with differing error-correction behavior. Estimation results indicate that only rapeseed oil prices adjust deviations from the long-run equilibrium between the three prices. Error-correction is found to be strong until 2005; however, it substantially weakens in 2006 and 2007 due to market distorting policy measures such as blending obligations and norms requiring the use of rapeseed oil.
Storage in Marketing Farmers' Stock Peanuts
Creators: name: Agnew, Donald B.
name: Jackson, Donald
name: Agnew, Donald B.
name: Jackson, Donald
Publisher: name: Unknown
Year: 1955
Subjects: subject: Crop Production/Industries
subject: Marketing
subject: FOS: Economics and business
subject: Production Economics

description: Excerpts from the report: Peanuts compete, in their principal use as food, with other nuts, candy, spreads, sandwich fillers, and such snack items as popcorn and potato chips. Along the marketing channel, the peanuts to supply this use must be stored until needed, for the crop is harvested in the fall but the peanuts and peanut products are consumed more or less uniformly throughout the year. If peanuts are to maintain their competitive position, their storage, as well as their production and processing, must be accomplished in the most efficient and economical manner possible. In this study, the principal factors affecting the cost and efficiency of storage in marketing farmers' stock and shelled peanuts were analyzed, with emphasis on farmers' stock. Farmers' stock peanuts are the unshelled and unsorted crop, whether owned by farmers or by others.
A Modified Multifractal Formalism for a Class of Self-Similar Measures
Creators: name: Shmerkin, Pablo
Publisher: name: arXiv
Year: 2004
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 28A80, 28A78

description: The multifractal spectrum of a Borel measure $μ$ in $\mathbb{R}^n$ is defined as \[ f_μ(α) = \dim_H {x:\lim_{r\to 0} \frac{\log μ(B(x,r))}{\log r}=α}. \] For self-similar measures under the open set condition the behavior of this and related functions is well-understood; the situation turns out to be very regular and is governed by the so-called ''multifractal formalism''. Recently there has been a lot of interest in understanding how much of the theory carries over to the overlapping case; however, much less is known in this case and what is known makes it clear that more complicated phenomena are possible. Here we carry out a complete study of the multifractal structure for a class of self-similar measures with overlap which includes the 3-fold convolution of the Cantor measure. Among other things, we prove that the multifractal formalism fails for many of these measures, but it holds when taking a suitable restriction.
Advertising and Product Confusion: A Case Study of Grapefruit Juice
Creators: name: Brown, Mark G.
name: Lee, Jonq-Ying
name: Behr, Robert M.
name: Brown, Mark G.
name: Lee, Jonq-Ying
name: Behr, Robert M.
Publisher: name: Unknown
Year: 1990
Subjects: subject: Agribusiness
subject: Consumer/Household Economics
subject: Demand and Price Analysis
subject: advertising
subject: demand
subject: grapefruit juice
subject: cocktail
subject: scanner data

description: Demand relationships for two closely related products -- grapefruit juice and grapefruit-juice cocktail -- were estimated from grocery-store scanner data to analyze the contention that consumer confusion exists between the two products. Results suggest confusion may exist, with grapefruit-juice advertising not only increasing the demand for grapefruit juice but also for grapefruit-juice cocktail.
Quaternion-based bilinear factor matrix norm minimization for color image inpainting
Creators: name: Miao, Jifei
name: Kou, Kit Ian
Publisher: name: arXiv
Year: 2020
Subjects: subject: Image and Video Processing (eess.IV)
subject: Numerical Analysis (math.NA)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Mathematics

description: As a new color image representation tool, quaternion has achieved excellent results in the color image processing, because it treats the color image as a whole rather than as a separate color space component, thus it can make full use of the high correlation among RGB channels. Recently, low-rank quaternion matrix completion (LRQMC) methods have proven very useful for color image inpainting. In this paper, we propose three novel LRQMC methods based on three quaternion-based bilinear factor (QBF) matrix norm minimization models. Specifically, we define quaternion double Frobenius norm (Q-DFN), quaternion double nuclear norm (Q-DNN) and quaternion Frobenius/nuclear norm (Q-FNN), and then show their relationship with quaternion-based matrix Schatten-p (Q- Schatten-p ) norm for certain p values. The proposed methods can avoid computing quaternion singular value decompositions (QSVD) for large quaternion matrices, and thus can effectively reduce the calculation time compared with existing (LRQMC) methods. The experimental results demonstrate the superior performance of the proposed methods over some state-of-the-art low-rank (quaternion) matrix completion methods.
Physics of the axion coupling
Creators: name: Varnava, Nicodemos
Publisher: name: No Publisher Supplied
Year: 2021

description: The application of topology in condensed matter physics has transformed the field by introducing new phases of matter. The prime example is the Chern number, an integer invariant of 2D manifolds, that is associated with the ground state of 2D insulators and distinguishes them based on their quantized Hall response. Physically, this quantization can be understood by viewing the Hall response as the change of the 1D polarization after a slow cyclic evolution. The result of which is necessarily the transport of an integer number electrons over one lattice constant. Importantly, Chern invariants are defined for every even dimensional manifold. In particular, the second Chern number manifests as a quantized nonlinear response of 4D insulators. In this case, the analog of the 1D polarization plays the 3D Chern-Simons axion coupling which describes an isotropic magnetoelectric effect. When time-reversal or inversion symmetry are present the response becomes quantized defining strong topological insulators and axion insulators respectively. In this thesis, we explore the physics of the axion coupling with an emphasis on magnetic topological insulators. We make contributions to the field by elucidating their physical properties, uncovering their mathematical manifestation and predicting material candidates using density function theory. Specifically, we construct a computational tool to formally answer how the integer part of the surface anomalous Hall conductivity of an axion insulator is determined. We then uncover phenomena at the surfaces of axion insulators including a novel quantum point junction. Next we consider how the axion coupling manifests in the hybrid Wannier representation. After describing the general features, we focus on quantized axion coupling in the presence of symmetries. We classify all such symmetries and explain how each class manifests. Following that we take a closer look at a specific application of antiferromagnetic topological insulators, the quantum point junction. We show how it realizes a robustly controllable quantum gate with applications in electron quantum optics. Finally, we discuss our search for an axion insulator, and present our preliminary results which suggest that the Zintl compounds Eu5Ga2Sb6 and Eu5Tl2Sb6 are promising candidates.
Denkmäler altarmenischer Meßliturgie
Creators: name: Ferhat, P... Petrus
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 11 Nr. 1 (1913): Oriens christianus, Band 11, Heft 1
title: Universität Kassel, Vorlesungsverzeichnis WiSe 2011 / 2012
Creators: name: (:Unkn) Unknown
Publisher: name: Universität Kassel
Year: 2011
Subjects: subject: 350
subject: 370
subject: Universität Kassel
subject: Vorlesungsverzeichnis

description: PDF zum Online-Vorlesungsverzeichnis