cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Experiments with Compact Antenna Arrays for MIMO Radio Communications
Creators: name: Browne, D. W.
name: Manteghi, M.
name: Fitz, M. P.
name: Rahmat-Samii, Y.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The problem addressed in this study is how to design and test compact antenna arrays for portable Mulitple-Input Multiple-Output (MIMO) transceivers. Mutual coupling in an antenna array affects signal correlation and array radiation efficiency - both of which have dramatic consequences for MIMO channel capacity. Mutual coupling becomes more pronounced as array aperture shrinks and is therefore a critical issue in compact array design. Two novel compact arrays are designed and fabricated for use in MIMO enabled mobile devices. These arrays are extremely compact yet demonstrate acceptable mutual coupling and radiation efficiency because of the MIMO-specific criteria used during their design. An experimental methodology is presented for fair and meaningful characterization of MIMO arrays by field trial. This methodology addresses the issue of capacity normalization and quantifies how well an antenna array's radiation pattern interfaces with multipath propagation. Results are presented from an extensive measurement campaign in which a true MIMO transceiver testbed is outfitted with compact arrays and dipole arrays of various sizes. A comprehensive and fair comparison is made between the compact arrays and dipole arrays in a variety of indoor propagation scenarios. Design recommendations for compact MIMO arrays are given.
description: Submitted for review on September 15 2005 to IEEE Journal on Antennas and Propagation Special Issue November 2006, Revised March 26 2006. Accepted July 4 2006
The Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Pairwise-Inverse-Probability and Angular Correction for Fibre Collisions in Clustering Measurements
Creators: name: Mohammad, Faizan G.
name: Percival, Will J.
name: Seo, Hee-Jong
name: Chapman, Michael J.
name: Bianchi, D.
name: Ross, Ashley J.
name: Zhao, Cheng
name: Lang, Dustin
name: Bautista, Julian
name: Brinkmann, Jonathan
name: Brownstein, Joel R.
name: Burtin, Etienne
name: Chuang, Chia-Hsun
name: Dawson, Kyle S.
name: de la Torre, Sylvain
name: de Mattia, Arnaud
name: Eftekharzadeh, Sarah
name: Fromenteau, Sebastien
name: Gil-Marín, Héctor
name: Hou, Jiamin
name: Mueller, Eva-Maria
name: Neveux, Richard
name: Paviot, Romain
name: Raichoor, Anand
name: Rossi, Graziano
name: Schneider, Donald P.
name: Tamone, Amélie
name: Tinker, Jeremy L.
name: Tojeiro, Rita
name: Magaña, Mariana Vargas
name: Zhao, Gong-Bo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The completed eBOSS catalogues contain redshifts of 344080 QSOs over 0.8
description: Submitted to MNRAS. 17 Pages, 20 Figures. A description of eBOSS and links to all associated publications can be found here: https://www.sdss.org/surveys/eboss/
ASCA and XMM-Newton Observations of A2029
Creators: name: Miyoshi, S.
name: Tanaka, N.
name: Yoshimura, M.
name: Yamashita, K.
name: Furuzawa, A.
name: Futamura, T.
name: Hudaverdi, M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The X-ray data of A2029 obtained with XMM-Newton show no evidence of an embedded AGN in the central region of this cluster, which was suggested from the analysis of restored ASCA image data, although some hot spots are seen within or around the central cD galaxy. The absence of AGN at the cluster center is consistentent with the result of Chandra observations. Radial profiles of the iron abundance and the 2D (surface) temperature obtained from the XMM-Newton data are in good agreement with the Chandra data as a whole.
description: 8 pages, 13 figures, accepted for publication in Advances in Space Research
Enforcing 'Self-Enforcing' International Environmental Agreements
Creators: name: McEvoy, David M.
name: Stranlund, John K.
name: McEvoy, David M.
name: Stranlund, John K.
Publisher: name: Unknown
Year: 2006
Subjects: Environmental Economics and Policy

description: Theoretical analyses of international environmental agreements (IEAs) have typically employed the concept of self-enforcing agreements to predict the number of parties to such an agreement. The term self-enforcing, however, is a bit misleading. The concept refers to the stability of cooperative agreements, not to enforcing these agreements once they are in place. Most analyses of IEAs simply ignore the issue of enforcing compliance. In this paper we analyze a static IEA game in which parties to an agreement finance an independent enforcement body with the power to monitor the parties' compliance to the terms of an IEA and impose penalties in cases of noncompliance. This approach is broadly consistent with the enforcement mechanism of the Kyoto Protocol under the Marrakesh Accords. We find that costly enforcement limits the circumstances under which international cooperation to protect the environment is worthwhile, but when IEAs are expected to form they will involve greater participation than IEAs that do not require costly enforcement. Consequently, costly enforcement of IEAs is associated with higher international environmental quality. Moreover, under certain conditions, aggregate welfare is higher when IEAs require costly enforcement.
Optimal Incentive Structure in Cattle Feeding Contracts under Alternative Fed Cattle Pricing Methods
Creators: name: Rahman, Shaikh Mahfuzur
name: Rahman, Shaikh Mahfuzur
Publisher: name: Unknown
Year: 2006
Subjects: Livestock Production/Industries

description: Developing a multitask principal-agent model, this paper theoretically analyzes the incentive provisions in the existing cattle feeding contracts under alternative fed cattle pricing methods. Comparative statics from the theoretical model are evaluated by simulation experiments. Feedlot and carcass performance of a large set of feeder steers are simulated employing a dynamic and deterministic bio-physical growth model adapted from the animal science literature. The cattle feeder and the owner's stochastic costs and returns under alternative production technologies and market conditions are then calculated by combining cattle performance data with historical price data. The main finding of this study is that the yardage fee contract is optimal for the cattle owner when the fed cattle are to be priced on the grid and the cost of gain contract is optimal when the cattle are to be marketed according to the live or dressed weight pricing methods.
Domácí porody v Česku: motivace, důvody a názory žen, které rodily plánovaně doma (2015-2020)
Creators: name: Durnová
name: Hejzlarová
Publisher: name: Zenodo
Year: 2021
Subjects: birth
homebirth
Czech Republic
birth care
respect
policy options

description: The questionnaire survey aimed to bring detailed evidence in reasons and preferences of women giving birth at home, especially concerning the opportunities offered by Czech birth care. The questionnaire maps the spectrum of opinions of these women and finds out under what conditions women would not choose to give birth at home or prefer maternity hospitals. In this context, the specific interest of the research was to identify the opinion trends among women who gave birth at home around the specific practices of Czech obstetrics and the relationship of these trends to the choice of home birth. From 12 October to 13 November 2020, we conducted a questionnaire survey lasting 10 to 15 minutes among women who were planning to give birth at home in 2015–2020. We received a total of 642 responses.
Unit Roots, TV-STARs, and the Commodity Terms of Trade: A Further Assessment of the Prebisch-Singer Hypothesis
Creators: name: Balagtas, Joseph Valdes
name: Holt, Matthew T.
name: Balagtas, Joseph Valdes
name: Holt, Matthew T.
Publisher: name: Unknown
Year: 2006
Subjects: Research Methods/ Statistical Methods

description: This paper examines the Prebisch-Singer hypothesis, that is, the hypothesis of a long-run decline in the prices of primary commodity prices relative to that of manufactured goods, by considering nonlinear alternatives. Specifically, in this paper we use bootstrap procedures to test the linear unit root model against models belonging to the family of smooth transition autoregressions (STARs) for 24 commodities, 1900-98. In eighteen cases we reject the linear null at usual significance levels. In fourteen cases we are able to successfully fit STAR-type models. Simulation results show there is very little support for the Prebisch-Singer hypothesis.
description: Replaced with revised version of paper 06/27/06.
Nuclear modification and elliptic flow measurements for $ϕ$ mesons at $\sqrt{s_{NN}}$ = 200 GeV d+Au and Au+Au collisions by PHENIX
Creators: name: Pal, Dipali
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We report the first results of the nuclear modification factors and elliptic flow of the phi mesons measured by the PHENIX experiment at RHIC in high luminosity Au+Au collisions at sqrt(sNN) = 200 GeV. The nuclear modification factors R_AA and R_CP of the phi follow the same trend of suppression as pi0's in Au+Au collisions. In d+Au collisions at sqrt(sNN) = 200 GeV, the phi mesons are not suppressed. The elliptic flow of the phi mesons, measured in the minimum bias Au+Au events, is statistically consistent with other identified particles.
description: 4 pages, 3 figures. Proceedings of Quark Matter 2005, Budapest, Hungary
Contamination of TEM Holders Quantified and Mitigated with Open-Hardware, High-Vacuum Bakeout System
Creators: name: Goh, Yin Min
name: Schwartz, Jonathan
name: Rennich, Emily
name: Ma, Tao
name: Kerns, Bobby
name: Hovden, Robert
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Hydrocarbon contamination plagues high-resolution and analytical electron microscopy by depositing carbonaceous layers onto surfaces during electron irradiation, which can render carefully prepared specimens useless. Increased specimen thickness degrades resolution with beam broadening alongside loss of contrast. The large inelastic cross-section of carbon hampers accurate atomic species detection. Oxygen and water molecules pose problems of lattice damage by chemically etching the specimen during imaging. These constraints on high-resolution and spectroscopic imaging demand clean, high-vacuum microscopes with dry pumps. Here, we present an open-hardware design of a high-vacuum manifold for transmission electron microscopy (TEM) holders to mitigate hydrocarbon and residual species exposure. We quantitatively show that TEM holders are inherently dirty and introduce a range of unwanted chemical species. Overnight storage in our manifold reduces contaminants by 1-2 orders of magnitude and promotes 2-4 times faster vacuum recovery. A built-in bakeout system further reduces contaminants partial pressure to below $10^{-10}$ Torr (~4 orders of magnitude down from ambient storage) and alleviates monolayer adsorption during a typical TEM experiment. We determine that bakeout of TEM holder with specimen held therein is the optimal cleaning method. Our high-vacuum manifold design is published with open-source blueprints, parts list, and cost.
Impact of Financial Variables on Production in Kansas Farms Efficiencies
Creators: name: Andreu, Monica Lopez
name: Featherstone, Allen M.
name: Langemeier, Michael R.
name: Grunewald, Orlen C.
name: Andreu, Monica Lopez
name: Featherstone, Allen M.
name: Langemeier, Michael R.
name: Grunewald, Orlen C.
Publisher: name: Unknown
Year: 2006
Subjects: Farm Management

description: This article establishes the cost-efficiency frontier and its variation over time for a sample of 610 farms in Kansas for ten consecutive years, from 1995 to 2004. The primary objective consists of examining how financially constrained firms affect cost efficiency and its components, allocative, technical and scale efficiency. Using a sample from the Kansas Farm Management Association and data envelopment analysis (DEA) technique, each farm is measured against the rest of the sample to calculate the cost efficiency frontier and other measures of efficiency per year. Two DEA financially constrained models, constrained by solvency and level of debt of the firms respectively, are compared to the basic one in which firms are non-constrained. We test whether the debt and solvency constraints are binding, and how much and in which direction they affect the level of cost efficiency, technical efficiency, allocative efficiency, and scale efficiency. Results for the farms and period studied show that financial constraints do not impede farms from achieving their level of cost efficiency. However, in the presence of financial constraints, farms' level of technical efficiency decreases whereas their level of allocative efficiency increases.
Deformed Two-Mode Quadrature Operators in Noncommutative Space
Creators: name: Wei, Hua
name: Li, Jiahua
name: Fang, Ranran
name: Xie, Xiaotao
name: Yang, Xiaoxue
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Starting from noncommutative quantum mechanics algebra, we investigate the variances of the deformed two-mode quadrature operators under the evolution of three types of two-mode squeezed states in noncommutative space. A novel conclusion can be found and it may associate the checking of the variances in noncommutative space with homodyne detecting technology. Moreover, we analyze the influence of the scaling parameter on the degree of squeezing for the deformed level and the corresponding consequences.
description: 11 pages, no figures
Intellectual Property Rights and Innovation in Developing Countries: Evidence from Panel Data
Creators: name: Leger, Andreanne
name: Leger, Andreanne
Publisher: name: Unknown
Year: 2006
Subjects: Research and Development/Tech Change/Emerging Technologies

description: The determinants of innovation and the role of intellectual property rights in different countries are not well understood. This paper estimates the determinants of innovation using a new panel dataset. It compares different panel estimation methods appropriate for finite size samples. Past R&D investments have a positive and significant impact on current innovation, demand-pull factors are also important in all country groups, and the structure of the economy has a negative (positive) impact in developing (industrialized) countries. Intellectual property protection is only significant for developing countries. The least-square dummy variable corrected estimator is found to be the most appropriate for small, unbalanced datasets. We discuss econometric issues and the policy implication of these results.
Variability in Certain Qualitative Characters of Fatty oil from Seeds of Salvadora spp.
Creators: name: TRIPATHI, Y.C.
Publisher: name: figshare
Year: 2020
Subjects: subject: Biochemistry
subject: 30401 Biologically Active Molecules
subject: FOS: Chemical sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: 30502 Natural Products Chemistry
subject: Organic Chemistry

description: Physicochemical characters and fatty acid profile of oil extracted from seeds of Salvadora oleoides and S. persica from different localities of Rajasthan state have been studied. Refractive index of all the oil samples of the two species was found of the same order. Considerable variations in other physicochemical characters were observed. Fatty acid profiles of the two species were found similar but compositional variations were recorded in oil samples of different localities of the state.
Kramer-Pesch effect in LuNi2B2C
Creators: name: Price, Astria
Publisher: name: University of British Columbia
Year: 2009

description: This thesis describes pSR observations of the internal magnetic field distribution n{B) as a function of temperature in LuNi₂B₂C (T[sub c] = 16.0 K, H[sub c2](0) = 7T), under a magnetic field of H = 1.2T applied parallel to the crystal c axis. The pSR polarisation signal is fitted to a nonlocal London model, assuming a square vortex lattice. By incorporating first order nonlocal corrections, this model achieves significantly better fits than the local London model. The fitted penetration depth temperature dependence λ(T) follows the form expected for a BCS s-wave superconductor, although the dependence is also consistent with a slight linear increase in the penetration depth λ with rising temperature. The rate of any such linear growth, however, is smaller than would be expected for an energy gap Δ with line nodes. The fitted core radius temperature dependence p(T) reveals a Kramer-Pesch effect, or linear contraction of the vortex core radius p upon cooling at low temperatures T << T[sub c] , that is weaker than predicted. The Kramer-Pesch effect found for this nearly three-dimensional superconductor is almost identical to that seen in quasi two-dimensional NbSe₂, implying that quasiparticles behave similarly in LuNi₂B₂C and NbSe₂ despite their different dimensionalities, and that longitudinal disorder of vortices has negligible impact on μSR determinations of the vortex core radius p. The surprisingly small magnitude of the Kramer-Pesch effect suggests that future theoretical work on the temperature dependence of vortex structure should consider zero point motion of vortices and intervortex interactions.
The completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Large-scale Structure Catalogues and Measurement of the isotropic BAO between redshift 0.6 and 1.1 for the Emission Line Galaxy Sample
Creators: name: Raichoor, Anand
name: de Mattia, Arnaud
name: Ross, Ashley J.
name: Zhao, Cheng
name: Alam, Shadab
name: Avila, Santiago
name: Bautista, Julian
name: Brinkmann, Jonathan
name: Brownstein, Joel R.
name: Burtin, Etienne
name: Chapman, Michael J.
name: Chuang, Chia-Hsun
name: Comparat, Johan
name: Dawson, Kyle S.
name: Dey, Arjun
name: Bourboux, Hélion du Mas des
name: Elvin-Poole, Jack
name: Gonzalez-Perez, Violeta
name: Gorgoni, Claudio
name: Kneib, Jean-Paul
name: Kong, Hui
name: Lang, Dustin
name: Moustakas, John
name: Myers, Adam D.
name: Müller, Eva-Maria
name: Nadathur, Seshadri
name: Newman, Jeffrey A.
name: Percival, Will J.
name: Rezaie, Mehdi
name: Rossi, Graziano
name: Ruhlmann-Kleider, Vanina
name: Schlegel, David J.
name: Schneider, Donald P.
name: Seo, Hee-Jong
name: Tamone, Amélie
name: Tinker, Jeremy L.
name: Tojeiro, Rita
name: Vivek, M.
name: Yèche, Christophe
name: Zhao, Gong-Bo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present the Emission Line Galaxy (ELG) sample of the extended Baryon Oscillation Spectroscopic Survey (eBOSS) from the Sloan Digital Sky Survey IV Data Release 16 (DR16). After describing the observations and redshift measurement for the 269,243 observed ELG spectra over 1170 deg$^2$, we present the large-scale structure catalogues, which are used for the cosmological analysis. These catalogues contain 173,736 reliable spectroscopic redshifts between 0.6 and 1.1, along with the associated random catalogues quantifying the extent of observations, and the appropriate weights to correct for non-cosmological fluctuations. We perform a spherically averaged baryon acoustic oscillations (BAO) measurement in configuration space, with density field reconstruction: the data 2-point correlation function shows a feature consistent with that of the BAO, providing a 3.2-percent measurement of the spherically averaged BAO distance $D_V(z_{\rm eff})/r_{\rm drag} = 18.23\pm 0.58$ at the effective redshift $z_{\rm eff}=0.845$.
description: Submitted to MNRAS. A summary of all SDSS BAO and RSD measurements with accompanying legacy figures can be found here: https://www.sdss.org/science/final-bao-and-rsd-measurements/. The full cosmological interpretation of these measurements can be found here: https://www.sdss.org/science/cosmology-results-from-eboss/
A QUARTERLY MODEL OF AGRICULTURAL INVESTMENT IN AUSTRALIA
Creators: name: Fisher, Brian S.
name: Fisher, Brian S.
Publisher: name: Unknown
Year: 1974
Subjects: Agricultural Finance

description: The aims of this study were (a) to attempt to develop a quarterly model to explain aggregate farm investment in Australia, and (b) to examine the concept of the implicit rental price of capital services as a method of taking account of taxation concessions in an investment equation.
Inherited Twistor-Space Structure of Gravity Loop Amplitudes
Creators: name: Bern, Zvi
name: Bjerrum-Bohr, N. E. J.
name: Dunbar, David C.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: At tree-level, gravity amplitudes are obtainable directly from gauge theory amplitudes via the Kawai, Lewellen and Tye closed-open string relations. We explain how the unitarity method allows us to use these relations to obtain coefficients of box integrals appearing in one-loop N=8 supergravity amplitudes from the recent computation of the coefficients for N=4 super-Yang-Mills non-maximally-helicity-violating amplitudes. We argue from factorisation that these box coefficients determine the one-loop N=8 supergravity amplitudes, although this remains to be proven. We also show that twistor-space properties of the N=8 supergravity amplitudes are inherited from the corresponding properties of N=4 super-Yang-Mills theory. We give a number of examples illustrating these ideas.
description: 32 pages, minor typos corrected
Phytopesticides-An Ecofriendly Approach for Pest Control
Creators: name: TRIPATHI, Y.C.
Publisher: name: figshare
Year: 2020
Subjects: subject: 70502 Forestry Biomass and Bioproducts
subject: FOS: Agriculture, forestry and fisheries
subject: 70504 Forestry Management and Environment
subject: 70505 Forestry Pests, Health and Diseases
subject: 70108 Sustainable Agricultural Development
subject: FOS: Other agricultural sciences
subject: 70599 Forestry Sciences not elsewhere classified
subject: 70107 Farming Systems Research

description: The use of pesticides for combating pest problems is age old. To sustain the greater supplies of food necessary to feed the growing population, pesticides may be the single most important factor in improving food production particularly in developing countries. Indiscriminate and heavy use of chemical pesticides results severe ecological degradations and serious health problems among living beings. This alarming situation has caused great anxiety among various societies of the world. The problem of pesticidal hazards can be solved effectively by developing and practicing plant based pesticides. In recent years, considerable interest arosed among the scientists allover the world and a fairly good amount of data have been generated on several plant species having pest control potential and some of the plant products have been recommended for the control of insect/pest/ diseases of various agricultural, horticultural, fruit and other economical crops. Hazardous consequences of chemical pesticides and the way to overcome this problem through the plant based pesticides have been discussed in this paper.
On the existence of global smooth solutions to the parabolic-elliptic Keller-Segel system with irregular initial data
Creators: name: Heihoff, Frederic
Publisher: name: arXiv
Year: 2020
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35Q92 (primary), 35J15, 35K55, 35A09, 35B65, 92C17

description: We consider the parabolic-elliptic Keller-Segel system \[ \left\{ \begin{aligned} u_t &= Δu - χ\nabla \cdot (u \nabla v), \\ 0 &= Δv - v + u \end{aligned} \right. \tag{$\star$} \] in a smooth bounded domain $Ω\subseteq \mathbb{R}^n$, $n\in\mathbb{N}$, with Neumann boundary conditions. We look at both chemotactic attraction ($χ> 0$) and repulsion ($χ< 0$) scenarios in two and three dimensions. The key feature of interest for the purposes of this paper is under which conditions said system still admits global classical solutions due to the smoothing properties of the Laplacian even if the initial data is very irregular. Regarding this, we show for initial data $μ\in \mathcal{M}_+(\overlineΩ)$ that, if either \begin{align} \bullet\;& n = 2,\, χ< 0\, \text{ or } \\ \bullet\;& n = 2,\, χ> 0\, \text{ and the initial mass is small or } \\ \bullet\;& n = 3,\, χ< 0\, \text{ and } μ= f \in L^p(Ω), p > 1 \end{align} holds, it is still possible to construct global classical solutions to ($\star$), which are continuous in $t = 0$ in the vague topology on $M_+(\overlineΩ)$.
TECHNOLOGICAL CHANGE IN THE ARID ZONE OF NEW SOUTH WALES
Creators: name: Duncan, Ronald C.
name: Duncan, Ronald C.
Publisher: name: Unknown
Year: 1972
Subjects: Research and Development/Tech Change/Emerging Technologies

description: The results described challenge the generally accepted interpretation of the factors underlying the changes in sheep numbers in the arid zone of New South Wales. The extent to which long-run changes in rainfall have been ignored is highlighted. Estimates of output per man are derived, using the C.E.S. production function, which show that there has been a small positive rate of technological change. Three-quarters of such technological advance has been due to factors which affect numbers of sheep carried, the remainder due to factors affecting wool production per sheep.
Homogeneous and isotropic big rips?
Creators: name: Giovannini, Massimo
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the way big rips are approached in a fully inhomogeneous description of the space-time geometry. If the pressure and energy densities are connected by a (supernegative) barotropic index, the spatial gradients and the anisotropic expansion decay as the big rip is approached. This behaviour is contrasted with the usual big-bang singularities. A similar analysis is performed in the case of sudden (quiescent) singularities and it is argued that the spatial gradients may well be non-negligible in the vicinity of pressure singularities.
description: 8 pages
LAND TENURE IN THE CYPRESS PINE AREAS OF NORTH-WESTERN NEW SOUTH WALES
Creators: name: Sinden, Jack A.
name: Kingma, Onko Tjerek
name: Sinden, Jack A.
name: Kingma, Onko Tjerek
Publisher: name: Unknown
Year: 1972
Subjects: Land Economics/Use

description: In New South Wales there are one million acres of land bearing cypress pine and held under lease from the government. This land is suitable for the joint production of timber and livestock or for timber production alone. Alternatively, the timber can be harvested to provide capital for property development. Farm management plans have, however, been constrained by the land tenure policy which aims to promote both closer settlement and timber production. In this paper the opportunity costs of the current tenure system are evaluated against the freehold situation. The conditions which favour either specialized timber production or the joint production of timber and livestock are examined. Finally, the cost of achieving a timber production target is examined in terms of loss of income to the individual grazier and the nation.
Odderon in the Color Glass Condensate
Creators: name: Hatta, Y.
name: Iancu, E.
name: Itakura, K.
name: McLerran, L.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss the definition and the energy evolution of scattering amplitudes with $C$-odd ("odderon") quantum numbers within the effective theory for the Color Glass Condensate (CGC) endowed with the functional, JIMWLK, evolution equation. We explicitly construct gauge-invariant amplitudes describing multiple odderon exchanges in the scattering between the CGC and two types of projectiles: a color--singlet quark--antiquark pair (or `color dipole') and a system of three quarks in a colorless state. We deduce the energy evolution of these amplitudes from the general JIMWLK equation, which for this purpose is recast in a more synthetic form, which is manifestly infrared finite. For the dipole odderon, we confirm and extend the non--linear evolution equations recently proposed by Kovchegov, Szymanowski and Wallon, which couple the evolution of the odderon to that of the pomeron, and predict the rapid suppression of the odderon exchanges in the saturation regime at high energy. For the 3--quark system, we focus on the linear regime at relatively low energy, where our general equations are shown to reduce to the Bartels--Kwiecinski--Praszalowicz equation. Our gauge--invariant amplitudes, and the associated evolution equations, stay explicitly outside the Möbius representation, which is the Hilbert space where the BFKL Hamiltonian exhibits holomorphic separability.
description: 43 pages, 1 figure
Helical Edge States and Quantum Phase Transitions in Tetralayer Graphene
Creators: name: Che, Shi
name: Shi, Yanmeng
name: Yang, Jiawei
name: Tian, Haidong
name: Chen, Ruoyu
name: Taniguchi, Takashi
name: Watanabe, Kenji
name: Smirnov, Dmitry
name: Lau, Chun Ning
name: Shimshoni, Efrat
name: Murthy, Ganpathy
name: Fertig, Herbert A.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Helical conductors with spin-momentum locking are promising platforms for Majorana fermions. Here we report observation of two topologically distinct phases supporting helical edge states in charge neutral Bernal-stacked tetralayer graphene in Hall bar and Corbino geometries. As the magnetic field B and out-of-plane displacement field D are varied, we observe a phase diagram consisting of an insulating phase and two metallic phases, with 0, 1 and 2 helical edge states, respectively. These phases are accounted for by a theoretical model that relates their conductance to spin-polarization plateaus. Transitions between them arise from a competition among inter-layer hopping, electrostatic and exchange interaction energies. Our work highlights the complex competing symmetries and the rich quantum phases in few-layer graphene.
description: Accepted by PRL
Understanding management of hypertensive disorders of pregnancy and medication use during pregnancy: A mixed methods approach
Creators: name: HELOU, AMYNA
Publisher: name: Monash University
Year: 2021
Subjects: subject: 111503 Clinical Pharmacy and Pharmacy Practice
subject: FOS: Clinical medicine

description: Hypertensive disorders of pregnancy (HDP) affect around 10% of pregnancies in Australia. Information about the management of these pregnant women and their views regarding management of HDP or their medicine use are limited. This PhD investigated adherence to clinical guidelines for HDP using medical records, followed up pregnant women until delivery, and conducted interviews with pregnant women. Majority of women with HDP may not take their blood pressure medicine as prescribed. The management of HDP mainly followed clinical guidelines, but the women identified some gaps in their management. Health professionals should work with pregnant women with HDP to optimise outcomes.
Generalised geometries, constrained critical points and Ramond-Ramond fields
Creators: name: Jeschek, Claus
name: Witt, Frederik
Publisher: name: arXiv
Year: 2005
Subjects: subject: Differential Geometry (math.DG)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: In the context of generalised geometry we investigate reductions to $SU(m)\times SU(m)$ together with an integrability condition which in dimension 6 describes the geometry of type II supergravity compactifications.
Tensor products and perturbations of BiHom-Novikov-Poisson algebras
Creators: name: Liu, Ling
name: Makhlouf, Abdenacer
name: Menini, Claudia
name: Panaite, Florin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics

description: We study BiHom-Novikov-Poisson algebras, which are twisted generalizations of Novikov-Poisson algebras and Hom-Novikov-Poisson algebras, and find that BiHom-Novikov-Poisson algebras are closed under tensor products and several kinds of perturbations. Necessary and sufficient conditions are given under which BiHom-Novikov-Poisson algebras give rise to BiHom-Poisson algebras.
description: 21 pages
A search for very high energy gamma-ray emission from the starburst galaxy NGC 253 with H.E.S.S
Creators: name: al., F. Aharonian et
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the result of 28 hours of observations of the nearby starburst galaxy NGC 253 with the H.E.S.S. detector in 2003. We find no evidence for very high energy gamma-ray emission from this object. Gamma-ray emission above 400 GeV from NGC 253 had been reported by the CANGAROO collaboration in 2002. From the H.E.S.S. data we derive upper limits on the flux above 300 GeV of 1.9 * 10^-12 photons cm^-2 s^-1 for a point-like source and 6.3 * 10^-12 photons cm^-2 s^-1 for a source of radius 0.5 degrees as reported by CANGAROO, both at a confidence level of 99%. These upper limits are inconsistent with the spectrum reported by CANGAROO. The expected very high energy gamma-ray emission from this object is discussed in the framework of a galactic wind propagation model.
description: 7 pages, 3 figures
RISK AND FARM SIZE IN THE PASTORAL ZONE
Creators: name: Anderson, Jock R.
name: Anderson, Jock R.
Publisher: name: Unknown
Year: 1972
Subjects: Livestock Production/Industries

description: Variable performance over time is an important feature of wool growing in the eastern pastoral zone of Australia. An analysis of time series data from the Australian Sheep Industry Survey indicates that standard deviation of net farm income is related more or less linearly to size of firm and increases with size at about the same rate as does average net income. A tentative conclusion is drawn that large farms have had a slight tendency to experience less variable rates of return than small farms. However, it is found that farms that have experienced relatively variable returns have tended to enjoy average rates of return above those of other farms of similar size.
Local gradient optimization of leakage-suppressing entangling sequences
Creators: name: Setser, Arman A.
name: Kestner, Jason P.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We use a gradient-based optimization scheme to find single-qubit rotations to be interwoven between timesteps of a noisy logical two-qubit entangling gate in order to suppress arbitrary logical and leakage errors in the two-qubit gate. We show how the sequence fidelity is affected by imperfections in the single-qubit operations, as well as by various relative strengths of the logical and leakage noise. Our approach is completely general and system-independent, allowing for application to any two-qubit system regardless of the experimental implementation details.
description: 6 pages, 4 figures
Low scale Seesaw model and Lepton Flavor Violating Rare B Decays
Creators: name: Fujihara, T.
name: Kang, S. K.
name: Kim, C. S.
name: Kimura, D.
name: Morozumi, T.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study lepton flavor number violating rare B decays, $b \to s l_h^{\pm} l_l^{\mp}$, in a seesaw model with low scale singlet Majorana neutrinos motivated by the resonant leptogenesis scenario. The branching ratios of inclusive decays $ b \to s l_h^{\pm} \bar{l_l}^{\mp} $ with two almost degenerate singlet neutrinos at TeV scale are investigated in detail. We find that there exists a class of seesaw model in which the branching fractions of $ b \to s τμ$ and $τ\to μγ$ can be as large as $10^{-10}$ and $10^{-9}$ within the reach of Super B factories, respectively, without being in conflict with neutrino mixings and mass squared difference of neutrinos from neutrino data, invisible decay width of $Z$ and the present limit of $Br(μ\to e γ)$.
description: 19 pages, 6 figures
title: UCN Perspektiv, Nr. 10 (2021): Neuropædagogik – perspektiver på lærings- og forandringsprocesser
title: Neuropædagogik – perspektiver på lærings- og forandringsprocesser
titleType: AlternativeTitle
Creators: name: UCN Perspektiv
Publisher: name: UCN Perspektiv
Year: 2021

description: Inden for kognitionsforskningen er der de seneste år sket en stor udvikling. Man taler i dag således om den tredje generation af kognitionsforskningen, som lægger vægt på embodiment og enaktiv tilgang i forståelsen af kognition. På den baggrund er det relevant med et temanummer i UCN Perspektiv med fokus på at belyse den pædagogiske betydning af de nyeste landevindinger inden for kognitionsforskningen under titlen Neuropædagogik – perspektiver på lærings- og forandringsprocesser.
description: Mentalisering igennem videofeedback og bevægelsesleg...64-71 Vejledning af unge...55-63 Neuropædagogik og omverdenperspektiver...45-54 Mentalisering og epistemisk tillid i supervisionsrummet ud fra et neuropædagogisk perspektiv...36-44 Mad og måltider i et neuropædagogisk perspektiv...28-35 Hvordan kan Neuropædagogik og Fundamentals of Care kvalificere sygeplejen til mennesker med demens?...16-27 Børns stressreaktion i mødet med dagtilbud...7-15 Forord...4-6
Role of Noise in a Market Model with Stochastic Volatility
Creators: name: Bonanno, G.
name: Valenti, D.
name: Spagnolo, B.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Finance (q-fin.ST)
subject: FOS: Physical sciences
subject: FOS: Economics and business

description: We study a generalization of the Heston model, which consists of two coupled stochastic differential equations, one for the stock price and the other one for the volatility. We consider a cubic nonlinearity in the first equation and a correlation between the two Wiener processes, which model the two white noise sources. This model can be useful to describe the market dynamics characterized by different regimes corresponding to normal and extreme days. We analyze the effect of the noise on the statistical properties of the escape time with reference to the noise enhanced stability (NES) phenomenon, that is the noise induced enhancement of the lifetime of a metastable state. We observe NES effect in our model with stochastic volatility. We investigate the role of the correlation between the two noise sources on the NES effect.
description: 13 pages, 6 figures, Eur. Phys. J. B, in press
چالش های اجازه خروج زن از کشورتوسط همسر
Creators: name: Tavassoli, Afsaneh
name: Ensie Malek
Publisher: name: figshare
Year: 2020
Subjects: subject: Sociology
subject: FOS: Sociology

description: به استناد قانون گذرنامه مصوب سال 1351مجلس شورای ملی که ریشه در سنت فقهی و عرفی حاکم بر روابط زوجین در ایران دارد خروج زوجه از کشور منوط به اجازه محضری زوج می باشد. ظاهرا این موضوع به مساله تمکین زن از همسرش مربوط می شود که در نتیجه آن زوجه باید در امر خروج از کشور از همسر خود اطاعت نموده و با اجازه کتبی و محضری وی از کشور خارج شود اما تحولات اجتماعی، اقتصادی، آموزشی و سیاسی جامعه در چند دهه گذشته و تاثیر تحولات بر نقش و پایگاه اجتماعی اقتصادی و هویت زنان در جامعه و خانواده شرایط تازه ای در رابطه میان زوجین پدید آورده است و کترایی و استمرار این قانون را به چالش کشیده است.
EVALUATION OF THE EFFICIENCY OF RESOURCE USE ON FARMS AND THE WELFARE OF FARM PEOPLE
Creators: name: Standen, B.J.
name: Standen, B.J.
Publisher: name: Unknown
Year: 1972
Subjects: Farm Management

description: Studies evaluating efficiency of resource use on farms and farmer welfare have commonly failed to specify the precise nature of problems often described in terms such as 'low-income'. Hence superior, alternative welfare and resource use positions, of interest to the policy formulator, are inadequately specified. Additionally, criteria used in these studies have often been invalid or inappropriate. This paper examines the theoretical and operational bases of efficiency and welfare criteria.
Massive Islands
Creators: name: Geng, Hao
name: Karch, Andreas
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We comment on the role of the graviton mass in recent calculations of the Page curve using holographic ideas. All reliable calculations of the Page curve in more than 2+1 spacetime dimensions have been performed in systems with massive gravitons. A crucial ingredient in these calculations is the formation of islands, regions that contribute to the entropy of degrees of freedom located elsewhere. While most often simply ignored, it is indeed true that mass of the graviton does not appear to significantly affect the calculations that appeared in the literature. We use the freedom to change the graviton mass to give an extremely simple model of analytically tractable island formation in general dimensions. We do however note that if one attempts to take the limit of zero graviton mass, any contribution from the islands disappears. This raises the question to what extent entanglement islands can play a role in standard massless gravity.
description: 17 pages, 2 figures, discussion of boundary conditions modified, results unchanged
Phytomedicinal Diversity-Its Extinction & Conservation in Indian Thar Desert
Creators: name: TRIPATHI, Y.C.
Publisher: name: figshare
Year: 2020
Subjects: subject: 111701 Aboriginal and Torres Strait Islander Health
subject: FOS: Health sciences
subject: 111501 Basic Pharmacology
subject: FOS: Clinical medicine
subject: 111599 Pharmacology and Pharmaceutical Sciences not elsewhere classified
subject: 111799 Public Health and Health Services not elsewhere classified
subject: 110403 Traditional Aboriginal and Torres Strait Islander Medicine and Treatments
subject: 110404 Traditional Chinese Medicine and Treatments
subject: 110405 Traditional Maori Medicine and Treatments

description: The western part of Rajasthan forming the major part of the Indian Desert is admittedly arid and poor in vegetation. However, the flora of this area provides many useful medicinal species whose proper scientific management can generate tremendous scope of employment opportunities for local habitants apart from their role in health care system and other socioeconomic and environmental impacts. In recent years, many such valuable species have become rare or nearly extinct owing to over exploitation, biotic pressure, mining activities, destructive collection and lack of regeneration efforts. Present paper deals with phytomedicinal wealth of the Indian Thar Desert, their present status and strategies for conservation action at various levels.
Breakup mechanisms in the 6He+64Zn reaction at near-barrier energies
Creators: name: Fernández-García, J. P.
name: Di Pietro, A.
name: Figuera, P.
name: Gómez-Camacho, J.
name: Lattuada, M.
name: Lei, J.
name: Moro, A. M.
name: Rodríguez-Gallardo, M.
name: Scuderi, V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: New experimental results for the elastic scattering of 6He on 64Zn at incident energies of 15.0 and 18.0 MeV and 4He at 17.5 MeV along with results already published at 10.0 and 13.6 MeV, are presented. Elastic and alpha experimental cross sections are compared with coupled-reaction-channel, continuum-discretized coupledchannel, and DWBA inclusive-breakup models. The large yield of alpha particles observed at all measured energies can be explained by considering a nonelastic breakup mechanism.
P-cadherin in ovarian cancer : a novel marker for disease progression
Creators: name: Patel, Ila Saroj
Publisher: name: University of British Columbia
Year: 2009

description: These studies have focused upon role(s) of the calcium-dependent cell adhesion molecules, known as the cadherins, in ovarian cancer. Recent studies have characterized one of the cadherins, E-cadherin, as a tumour suppressor gene. The normal human ovarian surface epithelium, as well as primary ovarian tumours, has been shown to express this cadherin subtype. Although E-cadherin expression levels are high in ovarian surface epithelial cells undergoing neoplastic transformation, there is a marked reduction in the expression levels of this cell adhesion molecule with progression to later stages of the disease state when the tumour cells acquire the ability to detach from the primary tumour. This in turn allows the cells to disseminate into the peritoneal cavity and subsequently interact with the mesothelial cells of the peritoneum. In our studies, we have found that P-cadherin is the predominant cadherin subtype present in ovarian tumor cell aggregates recovered from the ascites of patients. Interestingly, we have also determined that normal human peritoneal cells express P-cadherin which raises the possibility that this cell adhesion molecule plays an important role in the progression to the late stages of the disease state by mediating, at least in part, ovarian surface epithelial tumour-peritoneal cells interactions. We believe that these studies give us novel insight into the role(s) of the cadherins in ovarian cancer.
First observation of in-medium modifications of the omega meson
Creators: name: Trnka, D.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The photoproduction of omega mesons on nuclei has been investigated using the Crystal Barrel/TAPS experiment at the ELSA tagged photon facility in Bonn. The aim is to study possible in-medium modifications of the omega meson via the reaction A(gamma, omega)X. Results obtained for Nb are compared to a reference measurement on a liquid hydrogen target. While for recoiling, long-lived mesons (pi, eta and etaprime), which decay outside of the nucleus, a difference in the lineshape for the two data samples is not observed, we find a significant enhancement towards lower masses for omega mesons with low momenta produced on the Nb target.
description: Latex, 4 pages, 4 figures, accepted by Phys. Rev. Lett; references re-arranged, now references in chronological order in first paragraph