cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Antiferromagnetic Half-skyrmions and Bimerons at room temperature
Creators: name: Jani, Hariom
name: Lin, Jheng-Cyuan
name: Chen, Jiahao
name: Harrison, Jack
name: Maccherozzi, Francesco
name: Schad, Jonathon
name: Prakash, Saurav
name: Eom, Chang-Beom
name: Ariando, A.
name: Venkatesan, T.
name: Radaelli, Paolo G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In the quest for post-CMOS technologies, ferromagnetic skyrmions and their anti-particles have shown great promise as topologically protected solitonic information carriers in memory-in-logic or neuromorphic devices. However, the presence of dipolar fields in ferromagnets, restricting the formation of ultra-small topological textures, and the deleterious skyrmion Hall effect when driven by spin torques have thus far inhibited their practical implementations. Antiferromagnetic analogues, which are predicted to demonstrate relativistic dynamics, fast deflection-free motion and size scaling have recently come into intense focus, but their experimental realizations in natural antiferromagnetic systems are yet to emerge. Here, we demonstrate a family of topological antiferromagnetic spin-textures in $α$-Fe$_2$O$_3$ - an earth-abundant oxide insulator - capped with a Pt over-layer. By exploiting a first-order analogue of the Kibble-Zurek mechanism, we stabilize exotic merons-antimerons (half-skyrmions), and bimerons, which can be erased by magnetic fields and re-generated by temperature cycling. These structures have characteristic sizes of the order ~100 nm that can be chemically controlled via precise tuning of the exchange and anisotropy, with pathways to further scaling. Driven by current-based spin torques from the heavy-metal over-layer, some of these AFM textures could emerge as prime candidates for low-energy antiferromagnetic spintronics at room temperature.
description: 18 pages, 4 figures
Development and evaluation of a regional water poverty index for Benin
Creators: name: Heidecke, Claudia
name: Heidecke, Claudia
Publisher: name: Unknown
Year: 2006
Subjects: subject: Resource /Energy Economics and Policy
subject: water poverty index
subject: water supply
subject: decentralization

description: The paper discusses the application of the Water Poverty Index (WPI) as a monitoring tool for Benin’s water sector. Benin is currently in a process of political decentralization shifting responsibility for and administration of rural water supplies from the national to the communal level. Appropriate indicators are needed for monitoring and analyzing the progress of the water sector for each community. The Water Poverty Index allows monitoring of a combination of aspects affecting rural water management, including water sources, access to and use of water, human capacity to manage water, and environmental impacts. The application of this index is tested for Benin at the regional level. A series of variables have been chosen for inclusion into the index following data collection and analysis in Benin under the IMPETUS project. Results show a clear distinction between communes in the north and the south of the country and WPI rankings are similar to those for poverty levels. The paper concludes with a discussion of the strengths and weaknesses of the WPI and suggests improvements for its application at the communal level.
CROSS-BORDER COOPERATION, PROTECTED GEOGRAPHIC AREAS AND EXTENSIVE AGRICULTURAL PRODUCTION IN SERBIA
Creators: name: Stojanovic, Zaklina
name: Manic, Emilija
name: Stojanovic, Zaklina
name: Manic, Emilija
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agribusiness
subject: Community/Rural/Urban Development
subject: Environmental Economics and Policy
subject: Multifunctional
subject: Extensive agriculture
subject: SARD
subject: Cross-border cooperation
subject: Rural tourism
subject: Ecotourism
subject: Serbia

description: The concept of Sustainable Agricultural and Rural Development (SARD) is based on resources effective usage that brings strengthen social cohesion of rural regions. Sustainable agro systems take care of natural resources conservation, as well as of economic and social aspects of rural economy. In order to advance complementary activities, agricultural sector has been often seen as the base for local economical diversification of capacities. The connections between agriculture, nature and tourism are especially important. The EU countries insist on this kind of connections which is the integral part of financial support of common funds, while the candidate countries are using the IPA assistance for rural development programs. Program of cross - border cooperation has been placed within this context, too. The article, also, gives several examples of cross-border cooperation project that might include Serbia with some of the neighboring countries in the area of tourism and rural development. The most important elements of cooperation with comments and issues from the author’s perspective of view are given in this paper.
Testing the violation of the equivalence principle in the electromagnetic sector and its consequences in $f(T)$ gravity
Creators: name: Said, Jackson Levi
name: Mifsud, Jurgen
name: Parkinson, David
name: Saridakis, Emmanuel N.
name: Sultana, Joseph
name: Adami, Kristian Zarb
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: A violation of the distance-duality relation is directly linked with a temporal variation of the electromagnetic fine-structure constant. We consider a number of well-studied $f(T)$ gravity models and we revise the theoretical prediction of their corresponding induced violation of the distance-duality relationship. We further extract constraints on the involved model parameters through fine-structure constant variation data, alongside with supernovae data, and Hubble parameter measurements. Moreover, we constrain the evolution of the effective $f(T)$ gravitational constant. Finally, we compare with revised constraints on the phenomenological parametrisations of the violation of the equivalence principle in the electromagnetic sector.
Specific Star Formation Rates to Redshift 1.5
Creators: name: Bauer, A. E.
name: Drory, N.
name: Hill, G. J.
name: Feulner, G.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a study to determine how star formation contributes to galaxy growth since z=1.5 over five decades in galaxy stellar mass. We investigate the specific star formation rate (SSFR; star formation rate [SFR] per unit galaxy stellar mass) as a function of galaxy stellar mass and redshift. A sample of 175 K-band selected galaxies from the MUnich Near-Infrared Cluster Survey spectroscopic dataset provide intermediate to high mass galaxies (mostly M* > 10^10 Msun) to z=1. The FORS Deep Field provides 168 low mass galaxies (mostly M* < 10^10 Msun) to z=1.5. We use a Sloan Digital Sky Survey galaxy sample to test the compatibility of our results with data drawn from a larger volume. We find that at all redshifts, the SSFR decreases with increasing galaxy stellar mass suggesting that star formation contributes more to the growth of low mass galaxies than to the growth of high mass galaxies, and that high mass galaxies formed the bulk of their stellar content before z=1. At each epoch we find a ridge in SSFR versus stellar mass that is parallel to lines of constant SFR and evolves independently of galaxy stellar mass to a particular turnover mass. Galaxies above this turnover mass show a sharp decrease in the SFR compared to the average at each epoch and the turnover mass increases with redshift. The SFR along the SSFR ridge decreases by roughly a factor of 10, from 10 Msun/yr at z=1.5 to 1 Msun/yr at z=0. High mass galaxies could sustain the observed rates of star formation over the 10 Gyr observed, but low mass galaxies likely undergo episodic starbursts.
description: 4 pages, 2 figures, matches ApJL accepted version
"GULSHANI ROZ" ASARIDAGI ILOHIY OBRAZLARNING REALISTIK TASVIRI
Creators: name: Mannonova, Feruzabonu
Publisher: name: Zenodo
Year: 2024

description: Ushbu maqola Mahmud Shabistariyning “Gulshani Roz”asaridagi asosiy obraz kategoriyasidan biri hisoblangan ilohiy obrazlar ularning asosiy xususiyatlari va misollarni o`z ichiga oladi. Ilohiy obrazlar razmiy obrazlarga yaqinligi va realistic obrazlarning tarkibiy qismi sifatida ham ba`zi asarlarda namoyon bo`lishi mumkin. Biroq aynan ushbu asarda ilohiy obrazlar kategoriya sifatida alohida bosqichga olib chiqilgan va timsoliy o`ziga xosligi va ko`plab obrazlar tipologiya kesishgan nuqta sifatida namoyon bo`ladi.
Role of Hybridization in the Superconducting Properties of an Extended $d-p$ Hubbard Model: a Detailed Numerical Study
Creators: name: Calegari, E. J.
name: Magalhães, S. G.
name: Gomes, A. A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The Roth's two-pole approximation has been used by the present authors to study the effects of the hybridization in the superconducting properties of a strongly correlated electron system. The model used is the extended Hubbard model which includes the $d-p$ hybridization, the $p$-band and a narrow $d$-band. The present work is an extension a previous reference [Intern. Journ. of Modern Phys. B, Vol. 18 No. 2 (2004) 241]. Nevertheless, some important correlation functions necessary to estimate the Roth's band shift, are included together with the temperature $T$ and the Coulomb interaction $U$ to describe the superconductivity. The superconducting order parameter of a cuprate system, is obtained following Beenen and Edwards formalism. Here, we investigate in detail the change of the order parameter associated to temperature, Coulomb interaction and Roth's band shift effects on superconductivity. The phase diagram with $T_c$ versus the total occupation numbers $n_T$, shows the difference respect to the previous work.
description: 4 pages, 1 figure, accept to be published in Physica B
INNOVATION AND RURAL DEVELOPMENT: THE SOLUTION FOR THE HUNGARIAN BEE-KEEPING SECTOR
Creators: name: Karpati, Laszlo
name: Csapo, Zsolt
name: Vanyi Arvane, Georgina
name: Karpati, Laszlo
name: Csapo, Zsolt
name: Vanyi Arvane, Georgina
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agribusiness
subject: Community/Rural/Urban Development
subject: Livestock Production/Industries
subject: Honey production
subject: EU funds
subject: Product innovation
subject: Rural development

description: Rural development has become more and more important issue in Hungary since rural areas also contribute to the efficiency of the national economy. Development of rural areas also very important issue in the European Union, which could contribute to the improvement of profitability of small family businesses, higher employment rate in rural areas as well as slow down the migration of people from rural into urban areas. Nowadays the bee-keeping - as one of the activities can provide alternative income for small businesses in rural areas – has become more and more important topic in Hungary. Bee-keeping sector provides income roughly 15 thousands families in Hungary. At the same time it takes important role in the preservation of rural landscape, traditions and their regional values. However, the sector has serious problems, as well (for instance quality issues, competitors on the market, etc.). It can be stated that the market position of Hungarian honey can be preserved through the improvement of quality assurance and product development. These developments can be carried out by the utilization of national and European Union funds.
Effective Hamiltonian for the Pyrochlore antiferromagnet: semiclassical derivation and degeneracy
Creators: name: Hizi, U.
name: Henley, C. L.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In the classical pyrochlore lattice Heisenberg antiferromagnet, there is a macroscopic continuous ground state degeneracy. We study semiclassical limit of large spin length $S$, keeping only the lowest order (in 1/S) correction to the classical Hamiltonian. We perform a detailed analysis of the spin-wave modes, and using a real-space loop expansion, we produce an effective Hamiltonian, in which the degrees of freedom are Ising variables representing fluxes through loops in the lattice. We find a family of degenerate collinear ground states, related by gauge-like $Z_2$ transformations and provide bounds for the order of the degeneracy. We further show that the theory can readily be applied to determine the ground states of the Heisenberg Hamiltonian on related lattices, and to field-induced collinear magnetization plateau states.
description: 20 pages, 15 figures. Minor additions to text. Added some references
Anti-ferromagnetic ordering in arrays of superconducting pi-rings
Creators: name: Kirtley, J. R.
name: Tsuei, C. C.
name: Ariando
name: Smilde, H. -J. H.
name: Hilgenkamp, H.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We report experiments in which one dimensional (1D) and two dimensional (2D) arrays of YBa2Cu3O7-x-Nb pi-rings are cooled through the superconducting transition temperature of the Nb in various magnetic fields. These pi-rings have degenerate ground states with either clockwise or counter-clockwise spontaneous circulating supercurrents. The final flux state of each ring in the arrays was determined using scanning SQUID microscopy. In the 1D arrays, fabricated as a single junction with facets alternating between alignment parallel to a [100] axis of the YBCO and rotated 90 degrees to that axis, half-fluxon Josephson vortices order strongly into an arrangement with alternating signs of their magnetic flux. We demonstrate that this ordering is driven by phase coupling and model the cooling process with a numerical solution of the Sine-Gordon equation. The 2D ring arrays couple to each other through the magnetic flux generated by the spontaneous supercurrents. Using pi-rings for the 2D flux coupling experiments eliminates one source of disorder seen in similar experiments using conventional superconducting rings, since pi-rings have doubly degenerate ground states in the absence of an applied field. Although anti-ferromagnetic ordering occurs, with larger negative bond orders than previously reported for arrays of conventional rings, long-range order is never observed, even in geometries without geometric frustration. This may be due to dynamical effects. Monte-Carlo simulations of the 2D array cooling process are presented and compared with experiment.
description: 10 pages, 15 figures
A gradient flow formulation of the Lohe matrix model with a high-order polynomial coupling
Creators: name: Ha, Seung-Yeal
name: Park, Hansol
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 82C10, 82C22, 35B37

description: We present a generalized Lohe matrix model for a homogeneous ensemble with higher order couplings via the gradient flow approach. For the homogeneous free flow with the same hamiltonian, it is well known that the Lohe matrix model with cubic couplings can recast as a gradient system with a potential which is a squared Frobenius norm of of averaged state. In this paper, we further derive a generalized Lohe matrix model with higher-order couplings via gradient flow approach for a polynomial potential. For the proposed model, we also provide a sufficient framework in terms of coupling strengths and initial data, which leads to the emergent dynamics of the homogeneous ensemble.
KNOWLEDGE ECONOMY AND INNOVATIONS AS FACTORS OF AGRARIAN COMPETITIVENESS
Creators: name: Mihailovic, Branko
name: Hamovic, Vladana
name: Parausic, Vesna
name: Mihailovic, Branko
name: Hamovic, Vladana
name: Parausic, Vesna
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agribusiness
subject: Community/Rural/Urban Development
subject: International Development
subject: Labor and Human Capital
subject: Agro-economy
subject: Cooperation
subject: Performances
subject: Competitiveness

description: Today, more than ever, development of agriculture leans on science research results and their practical application. Research in the field of agriculture is conducted by large network of public institutions, institutes and universities are mostly directed toward improvement of production. Economical research, at the level of husbandry, market analysis, or analysis and estimations of economic policy is poorly developed. Profitability of agriculture and food industry should be improved and supported by adequate research and application of gained results. Experience acquired in research and education systems of post-communist countries can help these countries change their economy towards knowledge, innovations and new technologies. But, in spite of great number of research workers and successful education system inherited from the communist period, it would be difficult for countries that were part of East Block to turn these potential advantages into commercially successful innovations unless universities and research institutions cooperate closely with private sector, what implies restructuring research system towards adjustment to agro-economy needs.
The Nucleon and Roper Resonance in a Chiral Quark Diquark Model
Creators: name: Nagata, Keitaro
name: Hosaka, Atsushi
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A description of the nucleon and Roper resonance in a quark-diquark approach is presented. We show that two states with the quantum number of the nucleon can appear in the ground state of the spatial configuration, when there are two types of diquarks: scalar-isoscalar and axial-vector-isovector diquarks. The mass difference between the two states is generated by the mass difference between the two diquarks, which is due to the spin-spin interaction between the two quarks in the diquarks. The two states are then identified with the nucleon and Roper resonance.
description: 3 pages, 3figures. The proceedings of Particles and Nuclei International Conference: PANIC05, Santa Fe, US, October 24-28, 2005
Ontological Data Visualization: Visualizing for the Ecological, Feminine, & Embodied
Creators: name: Ploehn, Cathryn
Publisher: name: Carnegie Mellon University
Year: 2020
Subjects: subject: 120307 Visual Communication Design (incl. Graphic Design)
subject: FOS: Arts (arts, history of arts, performing arts, music)

description: A good data visualization opens up space for goodconversations. That is, a data visualization is astarting point in a discussion of a shared understanding of the world, a way for us to know together. Consequently, our practices as data visualization designers—through collecting data and portraying them visually—create (or reinforce)ways we can understand the world, and thus movethrough it—it's ontological. Alarmingly, there is an emerging sense among new media artists and scholars that our practices of collecting and visualizing data can create rigid,harmful understandings of the world; controllingontologies. In particular, D’Ignazio and Klein arguein their book, Data Feminism, that our current practices of data science can lead to the “silencing, extraction, monetization, or invisibility” of people (or other living things) that the data represent (D’Ignazio & Klein, 2020). In response to this violence, they assert that we need to make visible those who are creating the data, and those who arerepresented by the data. In other words, we need to“bring back the bodies.”
Introducing a new multi-particle collision method for the evolution of dense stellar systems. Crash-test N-body simulations
Creators: name: Di Cintio, Pierfrancesco
name: Pasquato, Mario
name: Kim, Hyunwoo
name: Yoon, Suk-Jin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Stellar systems are broadly divided into collisional and non-collisional. The latter are large-N systems with long relaxation timescales and can be simulated disregarding two-body interactions, while either computationally expensive direct N-body simulations or approximate schemes are required to properly model the former. Large globular clusters and nuclear star clusters, with relaxation timescales of the order of a Hubble time, are small enough to display some collisional behaviour and big enough to be impossible to simulate with direct $N$-body codes and current hardware. We introduce a new method to simulate collisional stellar systems, and validate it by comparison with direct $N$-body codes on small-$N$ simulations. The Multi-Particle collision for Dense stellar systems Code (MPCDSS) is a new code for evolving stellar systems with the Multi-Particle Collision method. Such method amounts to a stochastic collision rule that allows to conserve exactly the energy and momentum over a cluster of particles experiencing the collision. The code complexity scales with $N \log N$ in the number of particles. Unlike Monte-Carlo codes, MPCDSS can easily model asymmetric, non-homogeneous, unrelaxed and rotating systems, while allowing us to follow the orbits of individual stars. We evolve small ($N = 3.2 \times 10^4$) star clusters with MPCDSS and with the direct-summation code NBODY6, finding a similar evolution of key indicators. We then simulate different initial conditions in the $10^4 - 10^6$ star range. MPCDSS bridges the gap between small, collisional systems that can be simulated with direct $N$-body codes and large noncollisional systems. MPCDSS in principle allows us to simulate globular clusters such as Omega Cen and M54 and even the nuclear star cluster, beyond the limits of current direct N-body codes in terms of the number of particles.
description: 12 pages, 13 figures. Matching the version accepted for publication in A&A
THE CHOICE BETWEEN CONVENTIONAL AND ORGANIC FARMING – A HUNGARIAN EXAMPLE
Creators: name: Ferto, Imre
name: Forgacs, Csaba
name: Ferto, Imre
name: Forgacs, Csaba
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agribusiness
subject: Crop Production/Industries
subject: Food Consumption/Nutrition/Food Safety
subject: Innovation
subject: Attitudes
subject: Organic production
subject: Diffusion

description: The organic agriculture represents a promising alternative for the future of European agriculture. It is consistent with the notion of sustainable development set forth already in the 1992 CAP Reform. Despite of increasing importance of organic farming, the research on organic farming is still limited. This scarcity of the research is especially true for New Member States of the enlarged EU. This paper investigates the choice between conventional and organic production technologies for individual farmers in Hungarian agriculture. We apply a model that explicitly accounts for the effects of farm-specific variables like age and education on the expectations farmers have on the utility of both production technologies. In addition we take into account the perceptions of farmers about the organic farming. The model was estimated on a cross-section data set of Hungarian farmers for the period 2007 using a logit specification. It appears that education has a positive impact on the choice between conventional and organic farming, and, the size of the farm in hectares has a negative effect on this choice. Age and some general considerations on environmental friendly technologies do not have a significant effect on choice between conventional and organic farming.
FOREIGN DIRECT INVESTMENTS IN SERBIA – STATE AND PERSPECTIVES
Creators: name: Ljubenovic Ralevic, Ivana
name: Djuric, Dejan
name: Djuric, Dragana
name: Ljubenovic Ralevic, Ivana
name: Djuric, Dejan
name: Djuric, Dragana
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agribusiness
subject: Agricultural Finance
subject: Public Economics
subject: Capital flow
subject: Foreign direct investment
subject: Serbian economy

description: The last decade of the twentieth century was very successful for a number of ex socialist countries of Central Europe. That was the decade of prosperity, progress, and getting closer to the modern and developed European countries. This region (Slovenia, Poland, Czech Republic, Hungary, and Slovakia) comprises group of countries in transition, which are in the front line in the process oh transformation of their economic systems, implementation of economic reforms and attracting private foreign investments, first of all, foreign direct investment. In contrast to these countries, in the area of former Yugoslavia, the early 1990s were the years of complete disintegration, marked by economic sanctions, huge human causalities, and vast destructions. The dramatic political situation Serbia was in, caused heavy consequences on its social-economic development. The result is that Serbia today is one of the least developed countries in Europe. Position of Serbian economy drastically aggravated in the area of international capital flow. In this paper we analyze one form of international capital flow that can start up the Serbian economy – foreign direct investment. In the period to come, the development of our country will mostly depend on the value of foreign investments. Without direct foreign investments and conditions of low domestic savings, limited opportunities for crediting, lack of management knowledge, modern technology and export routes, there is not going to be any economic development in Serbia. In that sense, the most prominent is the need to affirm our competitory advantages and to remove the existing limitations for foreign investments so that conditions for foreign investors to realize in the fastest way their ideas for investments are created.
Dust grain dynamics in C-Type shock waves in molecular clouds
Creators: name: Chapman, Jacqueline F.
name: Wardle, Mark
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the role and behaviour of dust grains in C-type MHD shock waves in weakly ionized, dense molecular clouds. New shock models are presented for steady, oblique C-type shock structures with shock speed v_s=18km/s, n_H=10^5cm^-3, and a grain population represented by either a single grain species or a MRN grain size distribution. The grain size distribution is calculated using Gauss-Legendre weights and the integrals over the continuous distribution of grain sizes are represented by a number of grain bins. The grain population can then be thought of as a series of separate grain size classes, each with uniquely specified properties. The dynamics of each grain size class is different through the shock front, with the smaller grain classes remaining coupled to the magnetic field and larger grains becoming partially decoupled from the magnetic field due to collisions with the neutrals. The importance of grain charging is also demonstrated. The effects of the orientation of the pre-shock magnetic field B_0 are also considered. It is found that there are critical orientations for B_0 in which the shock is no longer C-type and the transition becomes C$^*$ or J-type. The degree of non-coplanarity of the shock solution depends upon the grain model chosen, as well as the orientation of B_0.
description: 27 pages, 17 figures, submitted to MNRAS July 2005
Low scale inflation and the curvaton mechanism
Creators: name: Dimopoulos, Konstantinos
name: Lyth, David H.
name: Rodriguez, Yeinzon
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The primordial curvature perturbation may be due to a `curvaton' field, which dominates (or almost dominates) the energy density before it decays. In the simplest version of the curvaton model the scale of inflation has to be quite high corresponding to a Hubble parameter H>10^7 GeV. We here explore two modifications of the curvaton model which can instead allow inflation at a low scale. (i) The curvaton is a Pseudo Nambu-Goldstone Boson (PNGB), with a symmetry-breaking phase transition during inflation. (ii) The curvaton mass increases suddenly at some moment after the end of inflation but before the onset of the curvaton oscillations. Both proposals can work but not in a completely natural way. Also, the lower bound on the scale of inflation depends somewhat on the details of the framework used. Nevertheless, we show that inflation with H as low as 1 TeV or lower is possible to be attained.
description: Latex file in Revtex style. 17 pages, 3 figures. v2: added material and corrected mistakes to take into account the constraints on the behaviour of the radial field coming from the requirements of the spectral index of density perturbations. v3: typos corrected. Reference added. Version accepted for publication in Journal of High Energy Physics
Probing R-parity violating interactions via $p\bar{p} \to eμ+X$ channel on Tevatron
Creators: name: Yan-Bin, Sun
name: Yi, Jiang
name: Jin-Rui, Huang
name: Liang, Han
name: Ren-You, Zhang
name: Wen-Gan, Ma
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigated the lepton flavor violation processes $p\bar{p} \to eμ+X$ induced by R-parity violating interactions at the Tevatron hadron collider. The theoretical calculation and Monte Carlo simulation demonstrate that with a set of suitable cuts on experimental observables, one might be capable to reduce the standard model physical background to a controllable level so that the signals of R-parity violating interactions could be detected distinctively. Furthermore, clear sneutrino information could be abstracted from the purified event sample where other SUSY scalar quark 'pollution' is heavy suppressed. We conclude that with a reasonable assumption of $10fb^{-1}$ integrated luminosity, the Experiments at the Tevatron machine would have potential to discover sneutrino in the region of $m_{\tildeν}\le400GeV$ via lepton flavor violation $eμ$ production channels, or extend the mass scale constraint up to $m_{\tildeν}\ge 550 GeV$ at 95% CL.
description: 1 LaTex File and 8 EPS Files
Geometries, the principle of duality, and algebraic groups
Creators: name: Carr, Michael
name: Garibaldi, Skip
Publisher: name: arXiv
Year: 2005
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 20G15; 14M15

description: Jacques Tits gave a general recipe for producing an abstract geometry from a semisimple algebraic group. This expository paper describes a uniform method for giving a concrete realization of Tits's geometry and works through several examples. We also give a criterion for recognizing the automorphism of the geometry induced by an automorphism of the group. The E6 geometry is studied in depth.
description: The writing has been cleaned up since v1
Accuracy and reliability of a new method of measuring three-dimensional scapular kinematics
Creators: name: Bourne, Douglas Allen
Publisher: name: University of British Columbia
Year: 2009

description: The shoulder is a very complex and mobile joint which relies on movement of the clavicle, scapula as well as the humerus. Measuring movement of the scapula is a problem that has plagued both researchers and clinicians alike. The scapula is a relatively flat bone that moves with considerable sliding under the skin, which makes it difficult to use skin markers to monitor its movement. The current gold standards for measuring scapular motion are invasive, involving the use of metal implants with or without radiation. The goal of this research was to develop and validate a non-invasive method to measure scapular movement. This new technique uses a grid of skin markers located over the scapula to monitor its movement. In addition, a patient-specific correction factor using digitization of bony landmarks was developed which takes into account skin movement. The accuracy of this new method was determined using percutaneous bone pins as a gold standard. Eight university aged healthy subjects were recruited but the data from one subject had to be discarded due to pin loosening. An optoelectonic marker grid was applied to the skin overlying the scapula. Two 1.6mm bone pins with optoelectronic marker carriers were then inserted into the spine of the left scapula by an orthopaedic surgeon. During glenohumeral abduction, glenohumeral horizontal adduction, hand behind back, and forward reaching, three bony landmarks on the scapula were digitized at six arm positions to enable calculation of a subject-specific skin correction factor. The marker positions were recorded as the subjects performed each movement 10 times dynamically. The scapular movement from the bone pin method and the skin-based system were then compared. The root mean square (rms) errors for the digitization of bony landmarks (which the skin correction factor depends on) were found to range between 3.5°-4.6°. The rms errors for the new skin-based technique were found to range between 1.4° - 3.0° when corrected with the subject-specific skin correction factor. Rms differences (reliability) between days ranged between 3.8° - 7.5°. A preliminary cadaver study showed that the pins have a small effect on skin movement. Few studies have validated non-invasive measurement techniques of scapular motion using a gold standard. The rms errors of the new skin-based technique are equal to or less than currently available or reported methods. Therefore, it may be well suited to explore the role of scapular motion in shoulder pathologies.
THE ROLE OF SMALL FARMS IN REPUBLIKA SRPSKA: BARRIERS AND OPPORTUNITIES FOR MODERNIZATION
Creators: name: Vittuari, Matteo
name: Segre, Andrea
name: Vittuari, Matteo
name: Segre, Andrea
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agribusiness
subject: Community/Rural/Urban Development
subject: Farm Management
subject: Small farms
subject: Subsistence farming
subject: Republika Srpska

description: The paper aims to explore and analyze the main barriers and opportunities for the modernization of the agricultural sector of Republika Srpska with a specific focus on the role of small farms. A particular attention has been given to specific elements related to the human, social, and institutional capital. Methodologically the work has been based on an extensive desk research, on the use of a field survey and on a number of personal interviews with national experts and professionals. Overall the investigation has also greatly benefited from the theoretical framework elaborated by R. Yin within his “case study methodology”.
Convocatorias de ciencia, tecnología e investigación - Latam- Text
Creators: name: Gabriel Vélez Cuartas
name: Duban Torres Arroyave
Publisher: name: Zenodo
Year: 2021
Subjects: Convocatorias de Ciencia, Tecnología e Innovación

description: Este Dataset está compuesto por archivos de texto TXT, son resultado del proceso de Web Scraping de las páginas de organismos nacionales, estatales y regionales de Ciencia, Tecnología e Innovación de América Latina y de la selección de convocatorias únicamente dirigidas a la financiación de proyectos de investigación o innovación en la región. En total son 3.425 textos y están relacionados con el Dataset DOI:10.5281/zenodo.5236557. Los títulos de cada archivo están relacionados con el campo "ID Convocatoria" de dicho Dataset que contiene convocatorias tanto en español como en portugués.

Este proyecto ha sido financiado con recursos IDRC en el marco del proyecto: Research assessment in change: inclusivity in science systems and mission-oriented projects in research funding initiatives from the Global South. Reshaping quality evaluation through grounded and progressive methodologies. Este proyecto es coordinado por el Consejo Latinoamericano de Ciencias Sociales y ha sido operado por el CoLaV de la Universidad de Antioquia.
DEVELOPMENT OF HUMAN CAPITAL AS A TOOL FOR IMPROVING PRODUCTIVITY OF AGRICULTURAL SECTOR – CASE OF SERBIA
Creators: name: Zubovic, Jovan
name: Domazet, Ivana
name: Stosic, Ivan
name: Zubovic, Jovan
name: Domazet, Ivana
name: Stosic, Ivan
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agribusiness
subject: Community/Rural/Urban Development
subject: Labor and Human Capital
subject: Productivity Analysis
subject: agricultural sector
subject: productivity
subject: human capital
subject: education
subject: reform

description: New trends in global economy require greater capacity of the agricultural workforce. In order improve agricultural productivity it is needed to increase the level of human capital of the agrarian population. Human capital is accumulated knowledge, created in the long term process of human resources development, which begins in early stages and last all through the life, which is especially true for agricultural business. During transition Serbian economy went through major changes, with agriculture trailing to other sectors of the economy. Each farmer is producing only around 3,000 € gross added value per year, which is substantially lower than in other sectors. This paper will analyze what innovative activities are used worldwide in agriculture and give some possible solutions for investments in human capital and development of human resources in order to increase the level of competitiveness. Finally we analyze Serbian agricultural education system and give some instructions for improvements.
BIO-ENERGY FROM WINERY BY-PRODUCTS: A NEW MULTIFUNCTIONAL TOOL FOR THE ITALIAN WINE DISTRICTS
Creators: name: Begalli, Diego
name: Codurri, Stefano
name: Gaeta, Davide
name: Begalli, Diego
name: Codurri, Stefano
name: Gaeta, Davide
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agribusiness
subject: Community/Rural/Urban Development
subject: Resource /Energy Economics and Policy
subject: Biomass
subject: winery by-products
subject: multifunctionality
subject: energy
subject: wine district

description: This paper aims to investigate if the legislation will allow the production of energy from winery by-products and how this can contribute to multifunctionality of the wine makers’ income. A medium size winery was selected and an anaerobic digestor process was simulated using the company’s data. The main methods of financial evaluation were studied to create information to see if the project concepts were valid. The results highlight the positive level of earnings that the project will generate due to the high level of methane included in the pressings that could be transformed in energy, the short period needed for obtaining methane and the recent substantial level of government support both in Green Certificates and financing of the initial cost of the investments.
Identification of Dominant Features in Spatial Data
Creators: name: Flury, Roman
name: Gerber, Florian
name: Schmid, Bernhard
name: Furrer, Reinhard
Publisher: name: arXiv
Year: 2020
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: Dominant features of spatial data are connected structures or patterns that emerge from location-based variation and manifest at specific scales or resolutions. To identify dominant features, we propose a sequential application of multiresolution decomposition and variogram function estimation. Multiresolution decomposition separates data into additive components, and in this way enables the recognition of their dominant features. A dedicated multiresolution decomposition method is developed for arbitrary gridded spatial data, where the underlying model includes a precision and spatial-weight matrix to capture spatial correlation. The data are separated into their components by smoothing on different scales, such that larger scales have longer spatial correlation ranges. Moreover, our model can handle missing values, which is often useful in applications. Variogram function estimation can be used to describe properties in spatial data. Such functions are therefore estimated for each component to determine its effective range, which assesses the width-extent of the dominant feature. Finally, Bayesian analysis enables the inference of identified dominant features and to judge whether these are credibly different. The efficient implementation of the method relies mainly on a sparse-matrix data structure and algorithms. By applying the method to simulated data we demonstrate its applicability and theoretical soundness. In disciplines that use spatial data, this method can lead to new insights, as we exemplify by identifying the dominant features in a forest dataset. In that application, the width-extents of the dominant features have an ecological interpretation, namely the species interaction range, and their estimates support the derivation of ecosystem properties such as biodiversity indices.
description: 25 pages, 14 figures
Water-saving Rice Production Technologies in Krishna Western Delta Command of Andhra Pradesh – An Economic Analysis
Creators: name: Radha, Y.
name: Reddy, K. Yella
name: Rao, G. Subba
name: Chandra, S. Ramesh
name: Babu, G. Kishore
name: Radha, Y.
name: Reddy, K. Yella
name: Rao, G. Subba
name: Chandra, S. Ramesh
name: Babu, G. Kishore
Publisher: name: Unknown
Year: 2009
Subjects: Agricultural and Food Policy

description: The economic analysis of water-saving rice production technologies, viz. system of rice intensification (SRI), semi-dry and rotational irrigation vis-à-vis farmers’ practice has been carried out based on the study executed in Modukuru pilot area of Guntur district of Andhra Pradesh. Among the three water-saving rice production technologies analyzed, the total cost of cultivation has been recorded highest in SRI (Rs 58645/ha), followed by rotational (Rs 47140/ha) and semi-dry (Rs 39321/ha). But, the per hectare yield has been found highest in SRI (6.85 t), followed by semi-dry (6.66 t) and rotational (6.2 t), inferring that all the three technologies have recorded higher yields over farmers’ practice of 5.5 t/ha. However, the net returns and B-C ratio are maximum in semi-dry (Rs 43,484/ha; 1.11), followed by rotational (Rs 30,085; 0.64) and SRI (Rs 26,466/ha; 0.45) methods. Similarly, the water-use efficiency has been found highest in SRI (8.53 kg/ ha-mm), followed by semi-dry (8.02 kg/ha-mm) and rotational (7.33 kg/ ha-mm) methods, while the water-use efficiency benefit (Rs/ha-mm) has been recorded maximum in semi-dry (52.39), followed by SRI (42.08) and rotational (35.56) methods. With the initiation of Andhra Pradesh Water Management Project, Bapatla, the area under semi-dry rice cultivation has been found increasing over a period of four years, from 0.6 ha in 2004-2005 to 22 ha in 2007 -2008.
Accelerating Change: Engaging Local Communities in Disaster Risk Reduction in the Indian Himalayan Region - Science Policy Brief
Creators: name: Johnson, Richard
Publisher: name: BathSPAdata
Year: 2020
Subjects: subject: Geography
subject: 160401 Economic Geography
subject: FOS: Social and economic geography
subject: 160499 Human Geography not elsewhere classified
subject: 160403 Social and Cultural Geography

description: Project Summary: ‘Accelerating Change: Engaging Local Communities in Disaster Risk Reduction in the Indian Himalayan Region’ brings research evidence from the ‘Pathways to Resilience’ project (Kullu District, Himachal Pradesh, India) into dialogue with current disaster risk reduction policy-practice debates, to provide forward recommendations.Item Description: A science policy briefing paper. This details the problem of increasing disaster risk in mountain regions alongside a gap in local community engagement. The briefing calls for a shift in emphasis, which fosters inclusive community engagement, and takes better account of local knowledge in disaster risk reduction. Specific recommendations are: (i) revision of State and District disaster management plans; (ii) implementation of comprehensive awareness campaigns; and (iii) programmes to capture the diversity of local knowledge. (.pdf format)
Innovation in Food Networks and Organizational Diversity: A Case Study from the UK Retail Cooperative Sector
Creators: name: Sodano, Valeria
name: Hingley, Martin
name: Sodano, Valeria
name: Hingley, Martin
Publisher: name: Unknown
Year: 2009
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Farm Management
subject: Food Consumption/Nutrition/Food Safety
subject: Research and Development/Tech Change/Emerging Technologies
subject: Risk and Uncertainty
subject: cooperatives
subject: local and global competitiveness
subject: retailing
subject: regional sourcing
subject: socially responsible food networks
subject: UK

description: The still ongoing processes of consolidation and globalization affect the organizational diversity of the food system in very complex and somehow contradictory ways. The few transnational companies (TNCs) in whose hands the most part of food processing and distribution activities is concentrated, continuously look for organizational innovations to enhance their profits. Inter-firms collaborative arrangements, global sourcing and sector diversification are some of the most widely followed strategies that require (and/or lead to) new organizational forms. The paper identifies some important patterns of organizational structures and innovation in the food (and specifically food retailing) system, in order to evaluate the role and the competitiveness of cooperatives with respect to other organizational forms.
Family lifestyle dynamics and childhood obesity: evidence from the millennium cohort study.
Creators: name: Gray, Laura A
name: Hernandez Alava, Monica
name: Kelly, Mike
name: Campbell, Michael J
Publisher: name: Apollo - University of Cambridge Repository
Year: 2018
Subjects: Humans
Prevalence
Longitudinal Studies
Family
Life Style
Child
Child, Preschool
Female
Male
Pediatric Obesity
United Kingdom

description: Abstract Background The prevalence of childhood obesity has been increasing but the causes are not fully understood. Recent public health interventions and guidance aiming to reduce childhood obesity have focused on the whole family, as opposed to just the child but there remains a lack of empirical evidence examining this relationship. Methods Using data from the longitudinal Millennium Cohort Study (MCS), we investigate the dynamic relationship between underlying family lifestyle and childhood obesity during early childhood. The MCS interviewed parents shortly after the birth of their child and follow up interviews were carried out when the child was 3, 5 and 7 years. We use a dynamic latent factor model, an approach that allows us to identify family lifestyle, its evolution over time (in this case between birth and 7 years) and its influence on childhood obesity and other observable outcomes. Results We find that family lifestyle is persistent, 87.43% of families which were above the 95th percentile on the lifestyle distribution, remained above the 95th percentile when the child was 7 years old. Family lifestyle has a significant influence on all outcomes in the study, including diet, exercise and parental weight status; family lifestyle accounts for 11.3% of the variation in child weight by age 7 years. Conclusion The analysis suggests that interventions should therefore be prolonged and persuasive and target the underlying lifestyle of a family as early as possible during childhood in order to have the greatest cumulative influence. Our results suggest that children from advantaged backgrounds are more likely to be exposed to healthier lifestyles and that this leads to inequalities in the prevalence of obesity. To reduce inequalities in childhood obesity, policy makers should target disadvantaged families and design interventions specifically for these families.