cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Structural and Biochemical Characterization of a Dye-Decolorizing Peroxidase from Dictyostelium discoideum
Creators: name: Rai, Amrita
name: Klare, Johann P.
name: Reinke, Patrick Y. A.
name: Englmaier, Felix
name: Fohrer, Jörg
name: Fedorov, Roman
name: Taft, Manuel H.
name: Chizhov, Igor
name: Curth, Ute
name: Plettenburg, Oliver
name: Manstein, Dietmar J.
Publisher: name: MDPI
Year: 2024

description: A novel cytoplasmic dye-decolorizing peroxidase from Dictyostelium discoideum was investigated that oxidizes anthraquinone dyes, lignin model compounds, and general peroxidase substrates such as ABTS efficiently. Unlike related enzymes, an aspartate residue replaces the first glycine of the conserved GXXDG motif in Dictyostelium DyPA. In solution, Dictyostelium DyPA exists as a stable dimer with the side chain of Asp146 contributing to the stabilization of the dimer interface by extending the hydrogen bond network connecting two monomers. To gain mechanistic insights, we solved the Dictyostelium DyPA structures in the absence of substrate as well as in the presence of potassium cyanide and veratryl alcohol to 1.7, 1.85, and 1.6 Å resolution, respectively. The active site of Dictyostelium DyPA has a hexa-coordinated heme iron with a histidine residue at the proximal axial position and either an activated oxygen or CN⁻ molecule at the distal axial position. Asp149 is in an optimal conformation to accept a proton from H₂O₂ during the formation of compound I. Two potential distal solvent channels and a conserved shallow pocket leading to the heme molecule were found in Dictyostelium DyPA. Further, we identified two substrate-binding pockets per monomer in Dictyostelium DyPA at the dimer interface. Long-range electron transfer pathways associated with a hydrogen-bonding network that connects the substrate-binding sites with the heme moiety are described.
Colour-Specific Microfluidic Droplet Detection for Molecular Communication
Creators: name: Bartunik, Max
name: Fleischer, Marco
name: Haselmayr, Werner
name: Kirchner, Jens
Publisher: name: arXiv
Year: 2020
Subjects: subject: Emerging Technologies (cs.ET)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Droplet-based microfluidic systems are a promising platform forlab-on-a-chip (LoC) applications. These systems can also be used toenhance LoC applications with integrated droplet control information or for data transmission scenarios in the context of molecular communication. For both use-cases the detection and characterisation of droplets in small microfluidic channels is crucial. So far, only complex lab setups with restricted capabilities have been presented as detection devices. We present a new low-cost and portable droplet detector. The device is used to confidently distinguish between individual droplets in a droplet-based microfluidic system. Using on-off keying a 16-bit sequence is successfully transmittedfor the first time with such a setup. Furthermore, the devices capabilities to characterise droplets regarding colour and size are demonstrated. Such an application of a spectral sensor in a microfluidic system presents new possibilities, such as colour-coded data transmission or analysis of droplet content.
An optimum electrochemical production method of few-layers and few-defective graphene
Creators: name: Shafiekhani, Azizollah
name: Rostamian, Fatemeh
name: Hekmat, Maryam
Publisher: name: figshare
Year: 2020
Subjects: subject: 20301 Acoustics and Acoustical Devices; Waves
subject: FOS: Physical sciences
subject: Applied Physics
subject: Atomic Physics
subject: 20201 Atomic and Molecular Physics
subject: 20299 Atomic, Molecular, Nuclear, Particle and Plasma Physics not elsewhere classified
subject: 29901 Biological Physics
subject: FOS: Biological sciences
subject: 20399 Classical Physics not elsewhere classified
subject: 20501 Classical and Physical Optics
subject: 20405 Soft Condensed Matter
subject: Special Relativity
subject: 20406 Surfaces and Structural Properties of Condensed Matter
subject: 29904 Synchrotrons; Accelerators; Instruments and Techniques
subject: Thermodynamics
subject: 20304 Thermodynamics and Statistical Physics
subject: FOS: Mechanical engineering
subject: 20504 Photonics, Optoelectronics and Optical Communications
subject: 20203 Particle Physics
subject: 20599 Optical Physics not elsewhere classified
subject: 20202 Nuclear Physics
subject: 20503 Nonlinear Optics and Spectroscopy
subject: 29903 Medical Physics

description: Among the different synthesizing method of graphene, besides having a most suitable and cost-effective method, it is essential to have high-quality graphene. For this reason, the effects of the cathode electrode, the time and type of voltage variation, dispersion time, the electrolyte salt and washing solvent on process performance of electrochemical exfoliation of graphite (EE-G) were investigated. Here, we show great promise for few-layer and few-defective graphene by optimum EE-G. The most suitable condition to produce graphene is performing the process in (NH4)2SO4. Moreover, the NaOH as salt is suitable in the synthesis of graphene quantum dots. Raman analysis clearly showed the G, D band, and 2D band of carbon for samples.
Agroholdings in Russia: Breaking the Vicious Circle?
Creators: name: Hockmann, Heinrich
name: Wandel, Jurgen
name: Nedoborovskyy, Andriy
name: Hockmann, Heinrich
name: Wandel, Jurgen
name: Nedoborovskyy, Andriy
Publisher: name: Unknown
Year: 2005
Subjects: subject: Agribusiness
subject: Firm Organisation
subject: Vertical Integration
subject: Agricultural Technology
subject: Farm Input Market

description: The paper discusses the accelerated emergence of agroholdings in the Russian Federation. It is argued that the foundation of these highly integrated structures I due to the special (macro-) economic and institutional condition of the transition process in Russia. Moreover, it is shown that agricultural enterprises which are part of an agroholding were lacking behind other organisational forms in terms of economic efficiency. One reason for this finding is the highly centralized decision structures which, as experiences in Western Europe shows, are only suitable for very special agricultural value chains, but not for agriculture in general.
Bound states of the Dirac equation for the PT-symmetric generalized Hulthen potential by the Nikiforov-Uvarov method
Creators: name: Egrifes, Harun
name: Sever, Ramazan
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The one-dimensional Dirac equation is solved for the PT-symmetric generalized Hulthen potential. The Nikiforov-Uvarov method which is based on solving the second-order linear differential equations by reduction to a generalized equation of hypergeometric type is used to obtain exact energy eigenvalues and corresponding eigenfunctions.
description: 18 pages including 4 figures,to be published in Phys.Lett.A
Aspects of the Definition and Classification of Farms
Creators: name: Lund, Philip J.
name: Lund, Philip J.
Publisher: name: Unknown
Year: 2005
Subjects: subject: Farm Management
subject: Land Economics/Use
subject: Farm
subject: Agricultural holding
subject: Farm Size
subject: Agricultural landownership
subject: Part-time farming

description: This paper examines what, precisely, is meant by a 'farm' and considers various attributes of farms relevant to an assessment of the structure of European agriculture. A measure of average farm size is proposed to cope with the uncertain count of the population of farms. The issue of tenure may also be complex, with some farms consisting of separate parcels of land, each with different tenure situations. Finally, although many European farmers are often described as being 'part-time', there are a number of different criteria on the basis of which farmers, and also farms, may be classified as being part-time.
Spectral Variability of Quasars in the Sloan Digital Sky Survey. I: Wavelength Dependence
Creators: name: Wilhite, Brian C.
name: Berk, Daniel E. Vanden
name: Kron, Richard G.
name: Schneider, Donald P.
name: Pereyra, Nicholas
name: Brunner, Robert J.
name: Richards, Gordon T.
name: Brinkmann, Jonathan V.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Sloan Digital Sky Survey (SDSS) repeat spectroscopic observations have resulted in multiple-epoch spectroscopy for roughly 2500 quasars observed more than 50 days apart. From this sample, we identify 315 quasars that have varied significantly between observations. We create an ensemble difference spectrum (bright phase minus faint phase) covering rest-frame wavelengths from 1000 to 6000 Angstroms. This average difference spectrum is bluer than the average single-epoch quasar spectrum; a power-law fit to the difference spectrum yields a spectral index alpha_lambda = -2.00, compared to an index of alpha_lambda = -1.35 for the single-epoch spectrum. The strongest emission lines vary only 30% as much as the continuum. Due to the lack of variability of the lines, measured photometric color is not always bluer in brighter phases, but depends on redshift and the filters used. Lastly, the difference spectrum is bluer than the ensemble quasar spectrum only for lambda_rest < 2500 Angstroms, indicating that the variability cannot result from a simple scaling of the average quasar spectrum.
description: 47 pages, 14 figures, 3 tables, accepted for publication in ApJ
Land Improvements Under Land Tenure Insecurity: The Case of Liming in Finland
Creators: name: Myyra, Sami
name: Pietola, Kyosti
name: Myyra, Sami
name: Pietola, Kyosti
Publisher: name: Unknown
Year: 2005
Subjects: subject: Land Economics/Use
subject: Land tenure
subject: Liming

description: This article solves and characterizes optimal decision rules to invest in irreversible land improvements conditional on land tenure insecurity. Economic model is a normative dynamic programming model with known parameters for the one period returns and transition equations. The optimal decision rules for liming are solved numerically, conditional on alternative scenarios on the likelihood that the lease contract and, thus, farmer access to land is either renewed or expired. The model parameters represent Finnish soil quality and production conditions. The results suggest that irreversible liming decreases quickly and the yields decline gradually, when the farmer is confronted with land tenure insecurity caused by uncertain renewal of the lease contract. The results are confirmed via empirical results.
Pressure as a Source of Gravity
Creators: name: Ehlers, J.
name: Ozsvath, I.
name: Schucking, E. L.
name: Shang, Y.
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The active mass density in Einstein's theory of gravitation in the analog of Poisson's equation in a local inertial system is proportional to $ρ+3p/c^2$. Here $ρ$ is the density of energy and $p$ its pressure for a perfect fluid. By using exact solutions of Einstein's field equations in the static case we study whether the pressure term contributes towards the mass.
Additional file 1 of Distribution and prevalence of ticks and tick-borne disease on sheep and cattle farms in Great Britain
Creators: name: Lihou, Katie
name: Vineer, Hannah Rose
name: Wall, Richard
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Ecology
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1: Text S1. Retrospective ectoparasite questionnaire survey sent to sheep and cattle farmers in Great Britain.
FAVOR (FAst Variability Optical Registration) -- A Two-telescope Complex for Detection and Investigation of Short Optical Transients
Creators: name: Beskin, G.
name: Bad'in, V.
name: Biryukov, A.
name: Bondar, S.
name: Chuntonov, G.
name: Debur, V.
name: Ivanov, E.
name: Karpov, S.
name: Katkova, E.
name: Plokhotnichenko, V.
name: Pozanenko, A.
name: Zolotukhin, I.
name: Hurley, K.
name: Palazzi, E.
name: Masetti, N.
name: Pian, E.
name: Nicastro, L.
name: Bartolini, C.
name: Guarnieri, A.
name: Piccioni, A.
name: Conconi, P.
name: Molinari, E.
name: Zerbi, F. M.
name: Brosch, N.
name: Eichler, D.
name: Shearer, A.
name: Atteia, J. -L.
name: Boer, M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: An astronomical complex intended to detect optical transients (OTs) in a wide field and follow them up with high time resolution investigation is described.
description: 4 pages, 3 figures. To be published in "Il Nuovo Cimento", Proceedings of the 4th Rome Workshop on Gamma-Ray Bursts in the Afterglow Era, eds. L. Piro, L. Amati, S. Covino, B. Gendre
The Impact of SAPARD on the Behaviour of Farms and Food-Processing Enterprises in the Lodz Region
Creators: name: Bryla, Pawel
name: Bryla, Pawel
Publisher: name: Unknown
Year: 2005
Subjects: subject: Community/Rural/Urban Development
subject: behaviour of farms
subject: behaviour of food-processing enterprises
subject: competitiveness
subject: investments
subject: market channel integration
subject: Poland
subject: SAPARD

description: The paper aims to improve our knowledge about the impact of a new instrument of the rural development policy on the behaviour of farms and food-processing enterprises in the Lodz region in Poland. It seeks to explore the characteristic features of the agricultural holdings and their owners as well as agricultural processing businesses applying for financial support in the framework of an EU pre-accession fund. The research concerns 42 SAPARD applications submitted by farmers and 34 SAPARD applications submitted by foodprocessing enterprises during the first year of the programme implementation.
The state of the studies of Middle Eastern Christianity in Russia in the late 20th - early 21st centuries
Creators: name: Pančenko, Konstantin Aleksandrovič
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 90 (2006): Oriens christianus, Band 90
title: Zantédesquie :
title: Principes directeurs pour la conduite de l’examen de la distinction, de l’homogénéité et de la stabilité.
titleType: Subtitle
Creators: name: International Union For The Protection Of New Varieties Of Plants,
Publisher: name: International Union for the Protection of New Varieties of Plants,
Year: 0
Subjects: Group identity.
New Varieties of Plants
Zantedeschia

description: Ces principes directeurs (“principes directeurs d’examen”) visent à approfondir les principes énoncés dans l’introduction générale (document TG/1/3) et dans les documents TGP qui s’y rapportent afin de donner des indications concrètes détaillées pour l’harmonisation de l’examen de la distinction, de l’homogénéité et de la stabilité (DHS) et, en particulier, à identifier des caractères convenant à l’examen DHS et à la production de descriptions variétales harmonisées.
A simpler proof of Mirzakhani's simple curve asymptotics
Creators: name: Rivin, Igor
Publisher: name: arXiv
Year: 2005
Subjects: subject: Geometric Topology (math.GT)
subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 57M50; 32G15

description: Maryam Mirzakhani (in her doctoral dissertation) has proved the author's conjecture that the number of simple curves of length bounded by L on a hyperbolic surface S is assymptotic to a constant times L to the power d, where d is the dimension of the Teichmuller space of S. In this note we clarify and simplify Mirzakhani's argument.
description: preliminary version of a paper published in Geometriae Dedicata
Additional file 1 of Diabetes promotes invasive pancreatic cancer by increasing systemic and tumour carbonyl stress in KrasG12D/+ mice
Creators: name: Menini, Stefano
name: Iacobini, Carla
name: Latouliere, Luisa De
name: Manni, Isabella
name: Vitale, Martina
name: Pilozzi, Emanuela
name: Pesce, Carlo
name: Cappello, Paola
name: Novelli, Francesco
name: Piaggio, Giulia
name: Pugliese, Giuseppe
Publisher: name: figshare
Year: 2020
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Science Policy
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer

description: Additional file 1. Supplementary Table S1. Antibodies used in Western blot and IHC studies. Supplementary Table S2. Silencer select Validated/Predesigned siRNAs and related TaqMan assays. Supplementary Table S3. TaqMan Gene Expression assays. Supplementary Fig. S1. Color digital photo (A), ex vivo BLI (B) and histological analysis (C) of the lung (left) and the liver (right) of a Diab KCM mice with metastatic PaC. Supplementary Fig. S2. Effect of RCS, AGE and FL-926-16 on YAP activity. Supplementary Fig. S3. Effect of EGFR silencing on KRAS activity and p-ERK 1/2 levels in human PDA cells exposed to CML.
Entanglement production in Quantized Chaotic Systems
Creators: name: Bandyopadhyay, Jayendra N.
name: Lakshminarayan, Arul
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: Quantum chaos is a subject whose major goal is to identify and to investigate different quantum signatures of classical chaos. Here we study entanglement production in coupled chaotic systems as a possible quantum indicator of classical chaos. We use coupled kicked tops as a model for our extensive numerical studies. We find that, in general, presence of chaos in the system produces more entanglement. However, coupling strength between two subsystems is also very important parameter for the entanglement production. Here we show how chaos can lead to large entanglement which is universal and describable by random matrix theory (RMT). We also explain entanglement production in coupled strongly chaotic systems by deriving a formula based on RMT. This formula is valid for arbitrary coupling strengths, as well as for sufficiently long time. Here we investigate also the effect of chaos on the entanglement production for the mixed initial state. We find that many properties of the mixed state entanglement production are qualitatively similar to the pure state entanglement production. We however still lack an analytical understanding of the mixed state entanglement production in chaotic systems.
description: 16 pages, 5 figures. To appear in Pramana:Journal of Physics
The Choice of Farm Organisation. A Hungarian Case
Creators: name: Ferto, Imre
name: Fogarasi, Jozsef
name: Ferto, Imre
name: Fogarasi, Jozsef
Publisher: name: Unknown
Year: 2005
Subjects: subject: Farm Management
subject: Transition agriculture
subject: farm organisation
subject: family farm

description: The literature on the agricultural transformation in Central an Eastern European countries usually neglect the investigation of organisational forms in agriculture. This paper is the first to analyse the choice of organisation forms in transition agriculture employing transaction cost theory. The analysis is based on Hungarian FADN data in 2003. In general, our results do not support the theoretical predictions on the choice of farm organisation, but confirm the differences in capital level and farm area observed in different farm organisations. The divergence between theory and empirics shed light on the importance of path dependency in explaining of farm organisations.
NMR relaxation rate in non-centrosymmetric superconductors
Creators: name: Samokhin, K. V.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The spin-lattice relaxation rate of nuclear magnetic resonance in a clean superconductor without inversion center is calculated for arbitrary pairing symmetry and band structure, in the presence of strong spin-orbit coupling.
description: 4 pages
No projective 16-divisible binary linear code of length 131 exists
Creators: name: Kurz, Sascha
Publisher: name: arXiv
Year: 2020
Subjects: subject: Information Theory (cs.IT)
subject: Combinatorics (math.CO)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: We show that no projective 16-divisible binary linear code of length 131 exists. This implies several improved upper bounds for constant-dimension codes, used in random linear network coding, and partial spreads.
description: 4 pages
Matrix metalloproteinase processing of monocyte chemokines
Creators: name: McQuibban, G. Angus
Publisher: name: University of British Columbia
Year: 2009

description: Extracellular matrix degradation occurs in chronic inflammatory diseases such as arthritis and disturbances in connective tissue homeostasis contribute to various lung, neurological and cardiovascular diseases and is pivotal in tumor metastasis. The matrix metalloproteinase (MMP) family of endoproteinases is implicated in these processes by a general ability to degrade the structural components of the extracellular matrix. To understand the biological role of MMP proteolysis in physiological and pathological processes, it is necessary to identify biologically relevant substrates. I initiated yeast two-hybrid screens to identify novel substrates of gelatinase A using the hemopexin C domain of the enzyme as bait. Initial screens of a cDNA library constructed from Concanavalin A-treated human gingival fibroblasts identified the chemokine monocyte chemoattractant protein (MCP)-3 as a hemopexin C domain binding protein. Incubation of MCP-3 with gelatinase A resulted in cleavage of MCP-3 at Gly⁴-lle⁵ a preferred scissile bond sequence for the enzyme. The turnover rate, k[sub cat]/K[sub m] was determined to be 8,000 M⁻¹s⁻¹, more efficient than gelatinase A cleavage of gelatin. Indeed, cleaved MCP-3 was identified in human rheumatoid arthritis synovial fluids. Gelatinase A (and other MMP)-mediated cleavage of MCP-3 resulted in conversion of chemokine receptor agonist activity to a general acting antagonist, impairing the activity of several related chemokines. The mechanistic importance of the hemopexin C domain in gelatinase A cleavage of MCP-3 was determined. The turnover rate was reduced to 500 M⁻¹s⁻¹ upon removal of the hemopexin C domain from the enzyme. Exogenous hemopexin C domain competed for cleavage whereas the collagen binding domain of gelatinase A did not. Specificity of MCP cleavage could be attributed to unique binding of both the gelatinase A and membrane-type (MT)-1 hemopexin C domains to only MCP-3 and not MCP-1, -2, or -4. Chemokine chimeras further demonstrated the importance of hemopexin C domain exosites in catalysis. My results provide evidence that MMP activity can contribute toward the reparative process in inflammation and that interactions of MMPs with chemokines provide a self-attenuating network to dissipate pro-inflammatory activities. I propose that MMP processing of chemokines is a new paradigm in chemokine and MMP biology in the regulation of inflammation.
Performance of Different Institutional Units in the Czech Republic and the Role of External Financing
Creators: name: Davidova, Sophia
name: Latruffe, Laure
name: Ratinger, Tomas
name: Davidova, Sophia
name: Latruffe, Laure
name: Ratinger, Tomas
Publisher: name: Unknown
Year: 2005
Subjects: subject: Agribusiness
subject: corporate farms
subject: credit
subject: Czech Republic
subject: individual farms
subject: technical efficiency

description: The paper analyses the relationship between the financial structure of the different institutional units in the Czech Republic and their performance, by testing several theoretical hypotheses. It employs Data Envelopment Analysis to estimate separately corporate and individual farms' technical efficiency, and investigates the effect of indebtedness on efficiency in a second stage, accounting for potential endogeneity. No substantial differences were detected between individual and corporate farms. For both groups higher long-term indebtedness negatively affects farm performance (agency theory and adjustment hypothesis), while the latter is used for appraising loan applications (credit evaluation). Case studies to banks and farms confirmed these findings.
Few-electron molecular states and their transitions in a single InAs quantum dot molecule
Creators: name: Ota, T.
name: Rontani, M.
name: Tarucha, S.
name: Nakata, Y.
name: Song, H. Z.
name: Miyazawa, T.
name: Usuki, T.
name: Takatsu, M.
name: Yokoyama, N.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study electronic configurations in a single pair of vertically coupled self-assembled InAs quantum dots, holding just a few electrons. By comparing the experimental data of non-linear single-electron transport spectra in a magnetic field with many-body calculations, we identify the spin and orbital configurations to confirm the formation of molecular states by filling both the quantum mechanically coupled symmetric and anti-symmetric states. Filling of the anti-symmetric states is less favored with increasing magnetic field, and this leads to various magnetic field induced transitions in the molecular states.
description: 14 pages, 3 figures, Accepted for publication in Phys. Rev. Lett
Efficient evaluation of partition functions of frustrated and inhomogeneous spin systems
Creators: name: Murg, V.
name: Verstraete, F.
name: Cirac, J. I.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a numerical method to evaluate partition functions and associated correlation functions of inhomogeneous 2--D classical spin systems and 1--D quantum spin systems. The method is scalable and has a controlled error. We illustrate the algorithm by calculating the finite--temperature properties of bosonic particles in 1--D optical lattices, as realized in current experiments.
description: 5 pages, 3 figures
[Fotoalbum]
Creators: name: Holaker, Per Bjørner
Publisher: name: Unknown
Year: 0
Subjects: Tronstad, Leif
Knudtzon, Roar Brodtkorb
Brønn, Leif
Nygaard, Herluf

description: Fotoalbum inneholdende bilder bl.a. fotografert av Per Bjørner Holaker, men også andre fotografer.
description: Side 20 og 21 er sladdet grunnet sensitive personopplysninger.
Controllability of 2D Euler and Navier-Stokes Equations by Forcing 4 Modes
Creators: name: Agrachev, Andrey
name: Sarychev, Andrey
Publisher: name: arXiv
Year: 2005
Subjects: subject: Optimization and Control (math.OC)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 35Q30, 93C20, 93B05, 93B29

description: We study controllability issues for the 2D Euler and Navier-Stokes (NS) systems under periodic boundary conditions. These systems describe motion of homogeneous ideal or viscous incompressible fluid on a two-dimensional torus $\mathbb{T}^2$. We assume the system to be controlled by a degenerate forcing applied to fixed number of modes. In our previous work \cite{ASpb,AS43,ASDAN} we studied global controllability by means of degenerate forcing for Navier-Stokes (NS) systems with nonvanishing viscosity ($ν>0$). Methods of differential geometric/Lie algebraic control theory have been used for that study. In the present contribution we improve and extend the controllability results in several aspects: 1) we obtain a stronger sufficient condition for controllability of 2D NS system in an observed component and for $L_2$-approximate controllability; 2) we prove that these criteria are valid for the case of ideal incompressible fluid ($ν=0)$; 3) we study solid controllability in projection on any finite-dimensional subspace and establish a sufficient criterion for such controllability.
description: 25 pages
Evaluation of the Efficiency of Agricultural Holdings in View of Structural Changes in Estonia
Creators: name: Matveev, Eduard
name: Matveev, Eduard
Publisher: name: Unknown
Year: 2005
Subjects: subject: Land Economics/Use
subject: comparative analysis
subject: economic efficiency
subject: Estonia
subject: farm income
subject: land ownership
subject: net value added

description: This presentation provides comparative analysis of agricultural holdings in Estonia based on the Farm Accountancy Data Network (FADN) data. The FADN data for reference years 2000, 2001, 2002 and 2003 have been analysed. The FADN data analyses showed, that there are very big differences in the structure of the agricultural holdings. Individual farms represent ca 92% of the total population of agricultural producers but at the same time their part in total production attains less than 50% according to the FADN data for year 2003.
An Italian version of a Greek-Orthodox proskynetarion
Creators: name: Rubin, Rekhav
name: Levy-Rubin, Milka
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 90 (2006): Oriens christianus, Band 90
Perfect absorption in mirror-symmetric acoustic metascreens
Creators: name: Romero-García, V.
name: Jiménez, N.
name: Groby, J. -P.
name: Merkel, A.
name: Tournat, V.
name: Theocharis, G.
name: Richoux, O.
name: Pagneux, V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Mirror-symmetric acoustic metascreens producing perfect absorption independently of the incidence side are theoretically and experimentally reported in this work. The mirror-symmetric resonant building blocks of the metascreen support symmetric and antisymmetric resonances that can be tuned to be at the same frequency (degenerate resonances). The geometry of the building blocks is optimized to critically couple both the symmetric and the antisymmetric resonances at the same frequency allowing perfect absorption of sound from both sides of the metascreen. A hybrid analytical model based on the transfer matrix method and the modal decomposition of the exterior acoustic field is developed to analyze the scattering properties of the metascreen. The resulting geometry is 3D printed and experimentally tested in an impedance tube. Experimental results agree well with the theoretical predictions proving the efficiency of these metascreens for the perfect absorption of sound in the ventilation problems.
S=0 pseudoscalar meson photoproduction from the proton
Creators: name: Dugger, M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Many measurements of pseudoscalar mesons with S = 0 photoproduced on the proton have been made recently. These new data are particularly useful in theoretical investigations of nucleon resonances. How the new data from various labs complement each other and help fill in the gaps in the world data set is disscussed, with a glance at measurements to be made in the near future. Some theoretical techniques used to explain the data are briefly described.
description: 6 pages, 3 figures, Nstar workshop proceeding to be published with World Scientific
Development of Agrarian Structures in Bulgaria: From Productive Cooperatives to Sole Traders and Partnerships
Creators: name: Doitchinova, Julia M.
name: Kanchev, Ivan
name: Miteva, Albena
name: Doitchinova, Julia M.
name: Kanchev, Ivan
name: Miteva, Albena
Publisher: name: Unknown
Year: 2005
Subjects: subject: Agribusiness
subject: agricultural productive cooperatives
subject: partnerships
subject: sole proprietors

description: The aim of the paper is to analyze the reasons for the still continuing organizational restructuring and for the transition of Bulgarian agriculture from collective cooperative forms to prevailing sole proprietors and small size collective partnerships based on stake principle. The conclusions and assessments in the paper are based on the data from 2003 Census of agricultural holdings and on results from two research regional projects: "The Land-leasing model of agriculture in Dobrich region" and "Integrated development of rural regions in Haskovo area".
Exact Solution of the Six-Vertex Model with Domain Wall Boundary Conditions. Disordered Phase
Creators: name: Bleher, Pavel
name: Fokin, Vladimir
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mathematical Physics (math-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Combinatorics (math.CO)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 82B23

description: The six-vertex model, or the square ice model, with domain wall boundary conditions (DWBC) has been introduced and solved for finite $N$ by Korepin and Izergin. The solution is based on the Yang-Baxter equations and it represents the free energy in terms of an $N\times N$ Hankel determinant. Paul Zinn-Justin observed that the Izergin-Korepin formula can be re-expressed in terms of the partition function of a random matrix model with a nonpolynomial interaction. We use this observation to obtain the large $N$ asymptotics of the six-vertex model with DWBC in the disordered phase. The solution is based on the Riemann-Hilbert approach and the Deift-Zhou nonlinear steepest descent method. As was noticed by Kuperberg, the problem of enumeration of alternating sign matrices (the ASM problem) is a special case of the the six-vertex model. We compare the obtained exact solution of the six-vertex model with known exact results for the 1, 2, and 3 enumerations of ASMs, and also with the exact solution on the so-called free fermion line. We prove the conjecture of Zinn-Justin that the partition function of the six-vertex model with DWBC has the asymptotics, $Z_N\sim CN^κe^{N^2f}$ as $N\to\infty$, and we find the exact value of the exponent $κ$.
description: 53 pages, 8 figures
Determinants of Market Prices of Cattle in Eastern Ethiopia
Creators: name: Adugna, Teressa
name: Adugna, Teressa
Publisher: name: Unknown
Year: 2006
Subjects: subject: Livestock Production/Industries
subject: Cattle
subject: price variation
subject: live weight
subject: animal characteristics
subject: market characteristics
subject: Eastern Ethiopia

description: This study has attempted to identify determinants of cattle price per kilogram live weight using a log-linear regression model. The estimated model explains about 48% of the variation in market prices of cattle. Price per kilogram live weight of cattle increases with animal characteristics such as age, live weight and grade. Type of sellers, buyers' purposes, festivals, time of transaction and a time trend are also important variables in affecting cattle prices. Farmers tend to sell their animals at price discounts as compared to trader sellers. Cattle sellers suffer from price discounts in selling to buyers with business purposes in comparison to selling to ultimate consumers. Sellers tend to benefit from animal sales during festivals, as they tend to receive price premium compared to selling during non-festival periods. Cattle price per kilogram live weight increases with the time of transaction suggesting that sellers tend to obtain higher prices by selling at later hours of a market day. The policy implications of these empirical results are that efforts to benefit cattle producers and/or sellers need to pay attention to animal characteristics, sellers' type, buyers' purposes and festivals in preparing animals for market and/or during actual transactions. It is vitally essential to train cattle keepers on the above issues. Provision of reliable livestock market (price) information to market participants, and investment in different livestock marketing facilities (like weighing scale) and services need to be given due attention in order to avoid unrewarding cattle-pricing practices.
Less Discussed Dynamics in the Czech Farm Structure Development
Creators: name: Curtiss, Jarmila
name: Ratinger, Tomas
name: Medonos, Tomas
name: Curtiss, Jarmila
name: Ratinger, Tomas
name: Medonos, Tomas
Publisher: name: Unknown
Year: 2006
Subjects: subject: Farm Management
subject: Cluster analysis
subject: Czech agriculture
subject: Ownership
subject: Large-scale farms
subject: Performance
subject: Principal
subject: component analysis

description: The paper provides an empirical study of the dynamics of ownership changes in Czech agricultural companies, which are assigned by unique heterogeneity in ownership forms. Since employee ownership has retained a relatively important place in these structures, neoclassical, as well as institutional theories of labour managed firms are considered. Building upon efficiency arguments, both approaches suggest the dissolution of labour managed firms. The empirical analysis utilized detailed survey data from 2004 and accountancy data from 1997 to 2003. We used cluster analysis to classify companies into homogeneous groups with respect to their ownership structure and stage of restructuring, and analysed these characteristics in relation to performance indicators. The companies were found to be in various transition stages. The results reveal that the most progressed and the most profitable are companies with a significantly higher capital concentration, low number of owners and a low share of employee and external ownership. The least restructured companies with higher employee and external ownership show markedly worse performance figures. The restructuring process is complex and farms have adopted different strategies; restructuring only firm's liabilities by capitalising transformation debts appeared insufficient for improving performance.
Decompositions de groupes par produit direct et groupes de Coxeter
Creators: name: de Cornulier, Yves
name: de la Harpe, Pierre
Publisher: name: arXiv
Year: 2005
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20E34 (primary); 20F55 (secondary)

description: We provide examples of groups which are indecomposable by direct product, and more generally which are uniquely decomposable in direct products of indecomposable groups. Examples include Coxeter groups, for which we give an alternative approach to recent results of L. Paris. For a finitely generated linear group Gamma, we establish an upper bound on the number of factors of which Gamma can be the direct product. If Gamma is moreover torsion-free, it follows that Gamma is uniquely decomposable in direct product of indecomposable groups.
description: 23 pages, 0 figure
Governance Control Mechanisms in Portuguese Agricultural Credit Cooperatives
Creators: name: Cabo, Paula
name: Rebelo, Joao
name: Cabo, Paula
name: Rebelo, Joao
Publisher: name: Unknown
Year: 2006
Subjects: subject: Agricultural Finance
subject: cooperatives
subject: credit
subject: governance
subject: multinomial logit

description: Over the last decade Portuguese Agricultural Credit Cooperatives (ACCs) have increasingly face survival challenges related to their difficulty in gathering equity. The main source of ACCs equity is the net benefit; thus, understanding how ACCs governance can work on correcting bad economic performance is of crucial importance to overcome this constraint. The main objective of this paper is to describe the governance control mechanisms in the ACCs. Five governance mechanisms are identified: board and chairman change (internal mechanisms), central ACC intervention by an agent or by management board replacement and merger. Empirical analysis proved that the internal governance mechanisms activity is not related to the ACC performance. Additionally: (a) ACCs with a central ACC agent and merged ACCs hold a weaker credit management and a heavy administrative costs structure and profitability problems; and (b) ACCs with a management board replacement by the central ACC hold a weaker credit management and present solvency problems.
Characterization of single photons using two-photon interference
Creators: name: Legero, T.
name: Wilk, T.
name: Kuhn, A.
name: Rempe, G.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Adiabatic passage techniques allow the generation of single photons which are very long compared to the typical detector time resolution. Therefore the detection time of a photon can be measured within the duration of the single-photon wavepacket. As a consequence, two-photon interference can be investigated in a time-resolved manner, i.e., the coincidence rate can be measured as a function of the time between photodetections. The theoretical analysis shows that this method not only gives information about the duration of single photons, but also about their coherence time. Here we discuss how to use this method for a spectral or temporal characterization of a single-photon source.
description: 17 pages, 12 figures
Transdisciplinary and systemic construction of a framework for assessing the sustainability of alternative food networks in Mexico City
Creators: name: Nájera, Luis Bracamontes
name: Benítez, Mariana
name: Merino, Ayari G. Pasquier
name: Ibarrola-Rivas, María-José
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Space Science
subject: Medicine
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Marine Biology
subject: Science Policy

description: This paper describes and analyzes the process and results of the construction of a framework to assess the sustainability of alternative food networks in Mexico City, using a transdisciplinary and systemic approach. We generated a practical tool with twenty-two evaluation criteria linked to five themes: “care for nature and waste reduction;” “equity and economic viability;” “quality, diversity and local products;” “social equity, transparency and democracy,” and “learning and collaboration.” Our method allowed us to develop common languages and context-appropriate tools for sustainability assessment; identify trade-offs and leverage points; and promote collective learning in alternative food networks.
Spin-down rate of the transitional millisecond pulsar PSR J1023+0038 in the optical band with Aqueye+
Creators: name: Burtovoi, Aleksandr
name: Zampieri, Luca
name: Fiori, Michele
name: Naletto, Giampiero
name: Spolon, Alessia
name: Barbieri, Cesare
name: Papitto, Alessandro
name: Ambrosino, Filippo
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present a timing analysis of the transitional millisecond pulsar PSR J1023+0038 using observations taken between January 2018 and January 2020 with the high time resolution photon counter Aqueye+ mounted at the 1.82 m Copernicus telescope in Asiago. We report the first measurement of the timing solution and the frequency derivative of PSR J1023+0038 based entirely on optical data. The spin-down rate of the pulsar is $(-2.53 \pm 0.04) \times 10^{-15}$ Hz$^2$, which is $\sim$20% slower than that measured from the X-ray observations taken in 2013-2016 and $\sim$5% faster than that measured in the radio band during the rotation-powered state.
description: 6 pages, 4 figures, accepted for publication in Monthly Notices of the Royal Astronomical Society Letters
Additional file 1 of Distinct and overlapping roles of STAG1 and STAG2 in cohesin localization and gene expression in embryonic stem cells
Creators: name: Arruda, Nicole L.
name: Carico, Zachary M.
name: Justice, Megan
name: Liu, Ying Frances
name: Junjie Zhou
name: Stefan, Holden C.
name: Dowen, Jill M.
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1: Table S1. Accession numbers of data used in this study. Summary table of the datasets used in this study including antibody product number, genotypes, factor accession numbers, as well as background accession numbers.
Additional file 2 of Distinct and overlapping roles of STAG1 and STAG2 in cohesin localization and gene expression in embryonic stem cells
Creators: name: Arruda, Nicole L.
name: Carico, Zachary M.
name: Justice, Megan
name: Liu, Ying Frances
name: Junjie Zhou
name: Stefan, Holden C.
name: Dowen, Jill M.
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 2. Additional figures and corresponding legends for each complimentary main text figure (S1, S2, S3, and S4).
How Decoupled Is the European Union's Single Farm Payment?
Creators: name: Halmai, Peter
name: Elekes, Andrea
name: Velikovszky, Laszlo
name: Halmai, Peter
name: Elekes, Andrea
name: Velikovszky, Laszlo
Publisher: name: Unknown
Year: 2006
Subjects: subject: Agricultural and Food Policy
subject: CAP reform
subject: WTO
subject: decoupling

description: Our paper focuses on the key element of the 2003 CAP reform: on the single farm payment (SFP). The basic aim was to decouple direct payment from production decisions. Because of the widespread agricultural policy reforms (support producers with the least possible distortions) and of the on-going WTO negotiations, this is an issue attracting significant attention on behalf of agricultural economists. Different tools and different methodologies have been employed in the effort to better understand and rank policy measures in terms of their production and trade effects. Most of the literature classifies measures based on implementation criteria. Our paper assesses the decoupled nature of the single farm payment (SFP) based on WTO and OECD criteria. The EU argues that the payments do not distort trade and therefore should be placed in the WTO green box as a decoupled income support. Based on our analysis, this seems to be possible, as the SFP meets not only the current WTO (design based) criteria of decoupling, but can also be qualified as effective fully decoupled system using the OECD terminology.
An attributional perspective on the communication of norms
Creators: name: Conway, Lucian Gideon
Publisher: name: University of British Columbia
Year: 2009

description: Why do some shared beliefs and behaviors spread across a given population and persist over time, whereas other beliefs and behaviors do not? Different perspectives that help provide an answer to this question are critically reviewed. These perspectives fall under two broad headings: those that focus on the degree that norms correspond to some kind of objective reality, and others that focus on the degree that norms correspond to some kind of subjective reality. An attributional perspective is introduced that suggests that whether a norm will likely be communicated in a given context or not is partially determined by the degree that it is perceived to be objectively tied to reality. The present four studies focus on two psychological cues that tend to influence these attributional processes. Across all studies, participants read stories about a normative behavior and then answered questions about those stories. Studies 1 and 2 focused on an "impression management" cue. Study 1 provides evidence that the presence of a member of a positively stereotyped group reduces the intention to communicate a positive impression of that group later on. Study 2 provides weaker evidence that this same process occurs for a negatively stereotyped group. Studies 3 and 4 focus on an authority figure's command cue, both providing evidence that the explicit command of an authority figure can, under some circumstances, decrease the likelihood that persons will endorse a normative behavior. Study 3 suggests that this effect is moderated by the level of control the authority figure has over the participant. Study 4 suggests that this effect is moderated by the expertise of the authority figure in the area of knowledge relevant to the norm. Theoretical and practical implications of the attributional perspective are discussed.