cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Single and multi-frequency driving protocols in a Rashba nanowire proximitized to an s-wave superconductor
Creators: name: Roy, Koustav
name: Basu, Saurabh
Publisher: name: arXiv
Year: 2024
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We perform systematic analyses of single and multi-frequency driving protocols on a Rashba nanowire with superconducting correlations induced by proximity effects. The results for the single-mode drive reveal interesting frequency dependencies of the Majorana modes, in the sense that the parameters corresponding to the trivial and topological limits of the undriven (static) case host Majorana zero modes, respectively at low and high frequencies. Further, emergence of long-range interactions are noted that give rise to multiple gap-closing scenarios, which imply occurrence of multiple Majorana modes. On the other hand, the multi-frequency driving protocol, sub-grouped into commensurate and incommensurate ratios of the frequencies, demonstrates intriguing consequences. The commensurate case yields dynamical control over the stability of the edge modes. Moreover, complex driving protocols harm the Majoranas by pushing them into the bulk. Finally, the incommensurate case yields independent Majorana modes occurring at low-symmetry points in the Brillouin zone. While the single and the commensurate multi-frequency driving protocols admit the usage of symmetric time frames for the computation of the topological invariants, the incommensurate case relies on the framework of many-mode Floquet theory, where the topological properties are ascertained via calculating the Berry phase. We present band structure and phase diagrams to substantiate all our results. The robustness and concurrent existence of these unique Majorana modes, even amidst a very dense energy spectrum along with a lack of global time-periodicity, hold promise for applications in quantum computing and the development of Floquet time crystals.
Sp-brane accelerating cosmologies
Creators: name: Baukh, Viktor
name: Zhuk, Alexander
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate time dependent solutions (S-brane solutions) for product manifolds consisting of factor spaces where only one of them is non-Ricci-flat. Our model contains minimally coupled free scalar field as a matter source. We discuss a possibility of generating late time acceleration of the Universe. The analysis is performed in conformally related Brans-Dicke and Einstein frames. Dynamical behavior of our Universe is described by its scale factor. Since the scale factors of our Universe are described by different variables in both frames, they can have different dynamics. Indeed, we show that with our S-brane ansatz in the Brans-Dicke frame the stages of accelerating expansion exist for all types of the external space (flat, spherical and hyperbolic). However, applying the same ansatz for the metric in the Einstein frame, we find that a model with flat external space and hyperbolic compactification of the internal space is the only one with the stage of the accelerating expansion. Scalar field can prevent this acceleration. It is shown that the case of hyperbolic external space in Brans-Dicke frame is the only model which can satisfy experimental bounds for the fine structure constant variations. We obtain a class of models where a pare of dynamical internal spaces have fixed total volume. It results in fixed fine structure constant. However, these models are unstable and external space is non-accelerating.
description: 17 pages, 4 figures, accepted in PRD
2768: Charles Owen Hawes
Creators: name: Project Team, Lest We Forget
Publisher: name: University of Oxford
Year: 2024
Subjects: classificationCode: 430304
subject: British history
classificationCode: 430308
subject: European history (excl. British, classical Greek and Roman)
classificationCode: 430316
subject: International history

description: Charles Owen was born 17 February 1896 at Oakley. His father, uncle and other relatives were also named Charles so he possibly chose to use his middle name to distinguish himself from the others. He attended Thame Grammar School where he was quite a good sportsperson. He served in the Oxford and Buckinghamshire Light Infantry. 2nd/4th Battalion. He was wounded and repatriated to England. As soon as he was discharged he returned to the front where he was captured by the Germans in 1918. He died of ill treatment at the hands of the Germans. He was buried at Avesness Sur Helpe France. He is named on the honour Roll of his old school.
Consumers' Willingness to Pay a Price for Organic Beef Meat
Creators: name: Corsi, Alessandro
name: Novelli, Silvia
name: Corsi, Alessandro
name: Novelli, Silvia
Publisher: name: Unknown
Year: 2002
Subjects: subject: Consumer/Household Economics
subject: Organic meat
subject: Willingness to pay
subject: Double bounded probit

description: The goal of this paper is to estimate the maximum price consumers are willing to pay (MPWTP) for organic beef meat. To this purpose, a theoretical and econometric approach is presented, based on the RUM model and on a Contingent Valuation technique. The results show that consumers' MPWTP is quite high, thus suggesting that organic beef meat might gain an appreciable market share. This is also an encouraging signal for prospective producers of organic meat, who might compensate the likely increase in production costs with a substantial premium for the new good.
Simulations of Early Galaxy Formation
Creators: name: Davé, Romeel
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the predictions for the photometric and emission line properties of galaxies present during the latter stages of reionization from z=8 to 6. These preliminary predictions are made from cosmological hydrodynamic simulations that include star formation and feedback, but not the effects of radiative transfer. We find significant numbers of galaxies that have stellar masses exceeding 10^8 Mo by z=8, with metallicities in the range of one-tenth solar. These galaxies are just beyond the reach of current near-infrared surveys, but should be found in large numbers by next-generation programs. The Lyman alpha luminosity function does not evolve much from z=6 to z=8, meaning that it should also be possible to detect these objects in significant numbers with upcoming narrow band surveys, unless the escape fraction of Ly-alpha evolves significantly between those epochs.
description: 9 pages, to appear in the proceedings of UC Irvine May 2005 workshop on "First Light & Reionization", eds. E. Barton & A. Cooray, New Astronomy Reviews
High quality epitaxial thin films and exchange bias of antiferromagnetic Dirac semimetal FeSn
Creators: name: Khadka, Durga
name: Thapaliya, T. R.
name: Wen, Jiajia
name: Need, Ryan F.
name: Huang, S. X.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: FeSn is a topological semimetal (TSM) and kagome antiferromagnet (AFM) composed of alternating Fe3Sn kagome planes and honeycomb Sn planes. This unique structure gives rise to exotic features in the band structures such as the coexistence of Dirac cones and flatbands near the Fermi level, fully spin-polarized 2D surface Dirac fermions, and the ability to open a large gap in the Dirac cone by reorienting the Néel vector. In this work, we report the synthesis of high quality epitaxial (0001) FeSn films by magnetron sputtering. Using FeSn/Py heterostructures, we show a large exchange bias effect that reaches an exchange field of 220 Oe at 5 K, providing unambiguous evidence of antiferromagnetism and strong interlayer exchange coupling in our films. Field cycling studies show steep initial training effects, highlighting the complex magnetic interactions and anisotropy. Importantly, our work provides a simple, alternative means to fabricate FeSn films and heterostructures, making it easier to explore the topological physics of AFM TSMs and develop FeSn-based spintronics.
description: accepted by APL
Additional file 1 of The effects of Levilactobacillus brevis on the physiological parameters and gut microbiota composition of rats subjected to desynchronosis
Creators: name: Olekhnovich, Evgenii I.
name: Batotsyrenova, Ekaterina G.
name: Yunes, Roman A.
name: Kashuro, Vadim A.
name: Poluektova, Elena U.
name: Veselovsky, Vladimir A.
name: Ilina, Elena N.
name: Danilenko, Valeriy N.
name: Klimina, Ksenia M.
Publisher: name: figshare
Year: 2021
Subjects: subject: Biochemistry
subject: Genetics
subject: FOS: Biological sciences
subject: Physiology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: Inorganic Chemistry
subject: Computational Biology

description: Additional file 1: Figure S1. Weight gain by rats from different experimental groups one month after the start of the experiment.
Comparing sharp and smooth transitions of the second slow-roll parameter in single-field inflation
Creators: name: Kristiano, Jason
name: Yokoyama, Jun'ichi
Publisher: name: arXiv
Year: 2024
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In single-field inflation, violation of the slow-roll approximation can lead to growth of curvature perturbation outside the horizon. This violation is characterized by a period with a large negative value of the second slow-roll parameter. At an early time, inflation must satisfy the slow-roll approximation, so the large-scale curvature perturbation can explain the cosmic microwave background fluctuations. At intermediate time, it is viable to have a theory that violates the slow-roll approximation, which implies amplification of the curvature perturbation on small scales. Specifically, we consider ultraslow-roll inflation as the intermediate period. At late time, inflation should go back to the slow roll period so that it can end. This means that there are two transitions of the second slow-roll parameter. In this paper, we compare two different possibilities for the second transition: sharp and smooth transitions. Focusing on effects generated by the relevant cubic self-interaction of the curvature perturbation, we find that the bispectrum and one-loop correction to the power spectrum due to the change of the second slow-roll parameter vanish if and only if the Mukhanov-Sasaki equation for perturbation satisfies a specific condition called Wands duality. We also find in the case of sharp transition that, even though this duality is satisfied in the ultraslow-roll and slow-roll phases, it is severely violated at the transition so that the resultant one-loop correction is extremely large inversely proportional to the duration of the transition.
description: Improved discussion on Wands duality condition
2776: Norman Edward Quick
Creators: name: Project Team, Lest We Forget
Publisher: name: University of Oxford
Year: 2024
Subjects: classificationCode: 430304
subject: British history
classificationCode: 430308
subject: European history (excl. British, classical Greek and Roman)
classificationCode: 430316
subject: International history

description: This is a photo of the CWGC Jerusalem Memorial where Norman Quick (and others) are commemorated. He was killed on March 26th 1917 in the fighting around Jerusalem (he served with 5th Battalion Welch Regiment) and was from Pontypridd. I got to know his sister who used to lodge with my grandmother and when she died I was given for safekeeping the Bible, medals and other ephemera about Norman. My Gran named her second some Norman is memory of him.
Die Aufgaben der Dritten Vollversammlung des ökumenischen Rates der Kirchen
Creators: name: Bilheimer, Robert S.
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 9 Nr. 4 (1960): Ökumenische Rundschau, Band 9, Heft 4
Search for an Invisibly-Decaying Higgs Boson at LEP
Creators: name: L3 Collaboration
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: A search for a Higgs boson produced in e^+e^- collisions in association with a Z boson and decaying into invisible particles is performed. Data collected at LEP with the L3 detector at centre-of-mass energies from 189 GeV to 209 GeV are used, corresponding to an integrated luminosity of 0.63/fb. Events with hadrons, electrons or muons with visible masses compatible with a Z boson and missing energy and momentum are selected. They are consistent with the Standard Model expectations. A lower limit of 112.3 GeV is set at 95% confidence level on the mass of the invisibly-decaying Higgs boson in the hypothesis that its production cross section equals that of the Standard Model Higgs boson. Relaxing this hypothesis, upper limits on the production cross section are derived.
Identification And Farmer Family's Preference Of Indigenous Food In Rural Bengkulu.pdf
Creators: name: Simanjuntak, Betty Yosephin
Publisher: name: figshare
Year: 2020
Subjects: subject: 111199 Nutrition and Dietetics not elsewhere classified
subject: FOS: Health sciences

description: Indigenous food can be said as a local identity because of its existence as part of the culture of the community, such as certain procedures in processing their food, its role in community culture and governance, and recipes that are maintained from generation to generation. Purpose of this research was to identify the kinds of traditional foods, preferences in the consumption pattern in the family of farmers. FGD was performed on each ethnic group, and the members were mothers who understood the traditional foods consumed by people in the related ethnic group and they resided in the ethnic group. Most of the food sources of vegetables consumed by the community were vegetables that many people got from rice fields/dryfields/ gardens Traditional food snacks, side dishes and vegetables in the agricultural households as such as bolu semut, rebung asam ikan gaguk, guasan, gulai nangko,and gulai jamur gerigit.
The GMO Regulation in the EU and the Commercial Conflict with the United States
Creators: name: Lopez, Raul Compes
name: Carrau, Javier Guillem
name: Lopez, Raul Compes
name: Carrau, Javier Guillem
Publisher: name: Unknown
Year: 2002
Subjects: subject: Political Economy
subject: GMO
subject: Regulation
subject: WTO
subject: Protocol of Biosafety

description: The United States is the leading country in the application of biotechnology to agricultural methods. One of the principal reasons for this is the flexibility of its legislation on Genetically Modified Organisms (GMO). A significant part of its production of soya or corn is already genetically modified, so that its companies need to avoid technical barriers to their exports in the world markets. In the EU, negative public opinion has contributed to the adoption by the authorities of exigent legislation in order to avoid the possible risks to human health and the environment posed by GMO. The EU's authorisation procedure for these organisms is long and meticulous. Furthermore, a compulsory labelling system has been adopted for products, which contain GMO or genetically modified materials (GM materials). In 1998, American interests started to be adversely affected by European legislation. The USA Administration threatened to sue the EU before the World Trade Organisation (WTO). These threats have yet to be followed up with any action. The rules of international trade are regulated by agreements signed up to by the members of the WTO. The EU can argue that its authorisation procedure is designed to reduce the risks to health and the environment. This line of argument is compatible with the Agreements on Sanitary and Phytosanitary Measures (SPS) and Technical Barriers to Trade (TBT). The compulsory labelling system is also compatible with the Agreement on TBT if the WTO accepts that a product in which GM material is detected is not similar to a conventional one. The Protocol of Biosafety further supports the EU position since it advocates a cautious approach exemplified by the fact that the Protocol permits consideration of non-scientific risks during risk assessment. However, the Protocol is not yet in force, it is pending ratification by at least 50 countries and, now more than ever, it is uncertain whether the United States will be willing to ratify the Protocol. However, we cannot be sure that there will be future commercial controversy, which will show the contradictions between the commercial agreement and the environmental one.
Development of A Stochastic Traffic Environment with Generative Time-Series Models for Improving Generalization Capabilities of Autonomous Driving Agents
Creators: name: Ozturk, Anil
name: Gunel, Mustafa Burak
name: Dal, Melih
name: Yavas, Ugur
name: Ure, Nazim Kemal
Publisher: name: arXiv
Year: 2020
Subjects: subject: Robotics (cs.RO)
subject: Artificial Intelligence (cs.AI)
subject: Signal Processing (eess.SP)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Automated lane changing is a critical feature for advanced autonomous driving systems. In recent years, reinforcement learning (RL) algorithms trained on traffic simulators yielded successful results in computing lane changing policies that strike a balance between safety, agility and compensating for traffic uncertainty. However, many RL algorithms exhibit simulator bias and policies trained on simple simulators do not generalize well to realistic traffic scenarios. In this work, we develop a data driven traffic simulator by training a generative adverserial network (GAN) on real life trajectory data. The simulator generates randomized trajectories that resembles real life traffic interactions between vehicles, which enables training the RL agent on much richer and realistic scenarios. We demonstrate through simulations that RL agents that are trained on GAN-based traffic simulator has stronger generalization capabilities compared to RL agents trained on simple rule-driven simulators.
description: 7 pages, 4 figures, 7 tables, IV2020
2778: Shell with Royal Artillery cap badge
Creators: name: Project Team, Lest We Forget
Publisher: name: University of Oxford
Year: 2024
Subjects: classificationCode: 430304
subject: British history
classificationCode: 430308
subject: European history (excl. British, classical Greek and Roman)
classificationCode: 430316
subject: International history

description: My great-grandad's shell case given as a pair to my Nana. My great-grandad's name was William Ambrose Martin, my Nana, Beryl Ivy Smith (née Martin). William brought back a pair of shell cases (from a WW1 battlefield) and soldered his Royal Artillery cap badge onto one, and found another to put on its twin. The cases have sat on the family hearth ever since. They are now with my father and uncle.
Interoperable Provenance Authentication of Broadcast Media using Open Standards-based Metadata, Watermarking and Cryptography
Creators: name: Simmons, John C.
name: Winograd, Joseph M.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Cryptography and Security (cs.CR)
subject: Multimedia (cs.MM)
subject: FOS: Computer and information sciences

description: The spread of false and misleading information is receiving significant attention from legislative and regulatory bodies. Consumers place trust in specific sources of information, so a scalable, interoperable method for determining the provenance and authenticity of information is needed. In this paper we analyze the posting of broadcast news content to a social media platform, the role of open standards, the interplay of cryptographic metadata and watermarks when validating provenance, and likely success and failure scenarios. We conclude that the open standards for cryptographically authenticated metadata developed by the Coalition for Provenance and Authenticity (C2PA) and for audio and video watermarking developed by the Advanced Television Systems Committee (ATSC) are well suited to address broadcast provenance. We suggest methods for using these standards for optimal success.
description: 17 pages, 9 figures. Submitted to IBC2024 Technical Papers Programme
Agricultural Production Organization in Transition Economies and the Role of Human Capital: Evidence from Romania
Creators: name: Rizov, Marian
name: Rizov, Marian
Publisher: name: Unknown
Year: 2002
Subjects: subject: Production Economics
subject: human capital
subject: production organization
subject: agricultural transition
subject: Romania

description: This paper examines the production mode choices of rural households with an emphasis on the role of human capital in the agricultural transformation process. Farm restructuring in Central and Eastern Europe has resulted in a broad range of farm types, such as co-operatives, partnerships, individual farms and combinations of those. The fact that resources are allocated into different production organization modes is attributed to the utility maximization strategy of heterogeneous agents deriving income from uncertain sources in the face of absent or imperfect factor markets. Empirical results from a multinomial logit model estimated with data from two-year nation-wide survey of Romanian farm households support the hypothesis that the outcome of the transformation process depends primarily on both the human capital characteristics of and economic risks faced by the households.
Informationally complete measurements on bipartite quantum systems: comparing local with global measurements
Creators: name: D'Ariano, G. M.
name: Perinotti, P.
name: Sacchi, M. F.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Informationally complete measurements allow the estimation of expectation values of any operator on a quantum system, by changing only the data-processing of the measurement outcomes. In particular, an informationally complete measurement can be used to perform quantum tomography, namely to estimate the density matrix of the quantum state. The data-processing is generally nonunique, and can be optimized according to a given criterion. In this paper we provide the solution of the optimization problem which minimizes the variance in the estimation. We then consider informationally complete measurements performed over bipartite quantum systems focusing attention on universally covariant measurements, and compare their statistical efficiency when performed either locally or globally on the two systems. Among global measurements we consider the special case of Bell measurements, which allow to estimate the expectation of a restricted class of operators. We compare the variance in the three cases: local, Bell, and unrestricted global--and derive conditions for the operators to be estimated such that one type of measurement is more efficient than the other. In particular, we find that for factorized operators and Bell projectors the Bell measurement always performs better than the unrestricted global measurement, which in turn outperforms the local one. For estimation of the matrix elements of the density operator, the relative performances depend on the basis on which the state is represented, and on the matrix element being diagonal or off-diagonal, however, with the global unrestricted measurement generally performing better than the local one.
description: 8 pages, no figures
Conceptual framework for the design and conception of an electronic trade platform in agribusiness
Creators: name: Hausen, Tobias
name: Helbig, Ralf
name: Schiefer, Gerhard
name: Hausen, Tobias
name: Helbig, Ralf
name: Schiefer, Gerhard
Publisher: name: Unknown
Year: 2002
Subjects: subject: Research and Development/Tech Change/Emerging Technologies
subject: trade platform
subject: interorganisational relationship
subject: e-business

description: This article gives an overview of a conceptual framework for the designing and implementation of an electronic trade platform. The trade platform prototype is the basis of a general conception for the design and implementation of internet-based trade platforms in agribusiness. The main platform focus related to the concept are to convert traditional business relationships and transactions into an electronic system. The conceptual framework provides clarification with regard to the benefit of trade platforms and the individual requirements of different value chains and chain levels.
Very Special Relativity
Creators: name: Cohen, Andrew G.
name: Glashow, Sheldon L.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: By Very Special Relativity (VSR) we mean descriptions of nature whose space-time symmetries are certain proper subgroups of the Poincaré group. These subgroups contain space-time translations together with at least a 2-parameter subgroup of the Lorentz group isomorphic to that generated by $K_{x}+J_{y}$ and $K_{y}-J_{x}$. We find that VSR implies special relativity (SR) in the context of local quantum field theory or of CP conservation. Absent both of these added hypotheses, VSR provides a simulacrum of SR for which most of the consequences of Lorentz invariance remain wholly or essentially intact, and for which many sensitive searches for departures from Lorentz invariance must fail. Several feasible experiments are discussed for which Lorentz-violating effects in VSR may be detectable.
description: 3 pages, revtex
Consumer Welfare and the Loss Induced by Withheld Information: The Case of BSE in Italy
Creators: name: Mazzocchi, Mario
name: Stefani, Gianluca
name: Mazzocchi, Mario
name: Stefani, Gianluca
Publisher: name: Unknown
Year: 2002
Subjects: subject: Food Consumption/Nutrition/Food Safety
subject: Food safety
subject: welfare analysis
subject: information

description: The paper develops a measure of consumer welfare losses associated with withheld information about BSE linkage with vCJD. food safety. The Cost of Ignorance (COI) is measured by comparing the utility of the informed choice with the utility of the uninformed one, under condition of improved information. Unlike previous work, based on a single equation demand model, the measure is obtained retrieving a cost function from a dynamic Almost Ideal Demand System. The results indicate that Italian consumers bore a significant loss because of the delayed release of information.
The evolution of disk galaxies in clusters and the field
Creators: name: Bamford, S. P.
name: Aragon-Salamanca, A.
name: Milvang-Jensen, B.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We describe our project to examine the evolution of distant disk galaxies, and present the results of our work based on the Tully-Fisher relation. Comparing matched cluster and field samples we find evidence that the cluster galaxies are on average 0.7+-0.2 mag brighter than those in the field. Considering the field sample alone we find a brightening with redshift amounting to 1.0+-0.5 mag by z=1, which is likely to be an upper limit, considering the selection effects. We also give brief details of the ESO Distant Clusters Survey (EDisCS) and describe our plans for expanding our studies using data from this survey.
description: 4 pages, 5 figures. To appear in the proceedings of the "Island Universes: Structure and Evolution of Disk Galaxies" conference held in Terschelling, Netherlands, July 2005, ed. R. de Jong (Springer: Dordrecht)
Factors Determining EU-Competitiveness of the Hungarian Agriculture: Trade policy approach
Creators: name: Halmai, Peter
name: Elekes, Andrea
name: Halmai, Peter
name: Elekes, Andrea
Publisher: name: Unknown
Year: 2002
Subjects: subject: International Relations/Trade
subject: EU accession
subject: trade policy
subject: competitiveness

description: As regards EU accession of Hungary one of the most important questions is how the adaptation of the Common Agricultural Policy (CAP) will affect the competitiveness of the Hungarian agriculture. Competitive effects of CAP can be revealed in several ways (quantitative, comparative analysis, simulations etc.) but the results may differ significantly. That is why it is interesting to compare the results of different methods. This paper concentrates on the competitive effects of changing trade policy by comparing the results of comparative analyses (producer prices, export subsidy systems and import protection) and simulations. The results of the simulation confirm the conclusion that the CAP adaptation will favour basically the cereal production. CAP adaptation will intensify the already existing (competitive) differences between the two large sectors of agriculture (plant and animal products). All of the analyses came to the conclusion that the prospects of arable crops are favourable. Less reassuring are the prospects of animal products. There are apparent efficiency problems, and rising feed costs (due to accession) may further weaken the position of this sector. Without basic structural reforms the sustainability of the sector's competitiveness is questionable.
Paramedial quasigroups of prime and prime square order
Creators: name: Semanišinová, Žaneta
Publisher: name: arXiv
Year: 2020
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20N05, 05A15

description: We prove that, for every odd prime number $p$, there are $2p-1$ paramedial quasigroups of order $p$ and $6p^2-p-1$ paramedial quasigroups of order $p^2$, up to isomorphism. We present a complete list of those which are simple.
2500: Grandmother's Tea Cosy
Creators: name: Project Team, Lest We Forget
Publisher: name: University of Oxford
Year: 2024
Subjects: classificationCode: 430304
subject: British history
classificationCode: 430308
subject: European history (excl. British, classical Greek and Roman)
classificationCode: 430316
subject: International history

description: My grandmother was sent a tea cosy from Ypres by one of her two serving brothers during WW1. I don't know which brother sent it. Neither of the brothers survived the war. Frederick William Charles Witterick, Machine Gun Corps., died on 21/3/1918 and commemorated at the Arras Memorial. The other brother, Corporal Henry John Thomas Witterick, Machine Gun Corps., died on 16 August 1917 and is commemorated at Tyne Cot Memorial.
Patrimonio culturale di pubblico dominio (riproduzione del)
Creators: name: Caso, Roberto
Publisher: name: Zenodo
Year: 2024

description: L’appartenenza di un’ampia parte del patrimonio culturale al pubblico dominio potrebbe far desumere che la riproduzione – in particolare, la riproduzione digitale – dei beni culturali sia libera per ragioni commerciali e non commerciali. Così non è. L’effettiva esistenza di un regime di pubblico dominio è minacciata da istanze di controllo esclusivo avanzate da chi ha la proprietà o la custodia del bene culturale materiale oggetto della riproduzione. Tali istanze sono generalmente mosse da due obiettivi: un controllo censorio e un controllo economico. Il primo obiettivo attiene a valutazioni sulla compatibilità dell’uso con la destinazione del bene, il secondo concerne prospettive di guadagno connesse all’uso.

The fact that a large part of cultural heritage belongs to the public domain might suggest that the reproduction, especially digital reproduction, of cultural assets is free for both commercial and non-commercial scopes. However, this is not the case. The actual existence of a public domain regime is threatened by instances of exclusive control asserted by those who own the material cultural asset subject to reproduction. These instances are generally driven by two goals: censorial control and economic control. The former involves assessments of the compatibility of use with the purpose of cultural heritage, while the latter concerns profit chances associated with its use.
Additional file 1 of Neurogenesis-dependent antidepressant-like activity of Hericium erinaceus in an animal model of depression
Creators: name: Chong, Pit Shan
name: Poon, Chi Him
name: Roy, Jaydeep
name: Tsui, Ka Chun
name: Lew, Sze Yuen
name: Phang, Michael Weng Lok
name: Tan, Rachael Julia Yuenyinn
name: Cheng, Poh Guat
name: Fung, Man-Lung
name: Wong, Kah Hui
name: Lim, Lee Wei
Publisher: name: figshare
Year: 2021
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Molecular Biology
subject: Neuroscience
subject: Pharmacology
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 1: Fig. S1. NMR data assignments. Schematic diagram of the chemical structure of herierin IV (A). Steps involved in the isolation of HE compounds (B). Fig. S2. Visualization of MAPK (A) and IL-17 (B) signalling pathways. Fig. S3. Visualization of TNF (A) and neurotrophin (B) signalling pathways.
Determinants and Dynamics of Farm Diversification
Creators: name: Weiss, Christoph R.
name: Briglauer, Wolfgang
name: Weiss, Christoph R.
name: Briglauer, Wolfgang
Publisher: name: Unknown
Year: 2002
Subjects: subject: Farm Management
subject: Diversification
subject: Farm Sector
subject: Dynamics
subject: Panel Data

description: This paper examines the impact of various farm and household characteristics (such as farm size, the off-farm employment status, the farm operator's age and schooling and the number of family members) on the level as well as the dynamics of on-farm diversification. Using linked census data for Upper-Austria from 1980, 1985 and 1990 we provide evidence that smaller farms are more specialised and also tend to increase the degree of specialisation over time more quickly than large farms. A significantly lower degree of diversification (higher degree of specialisation) as well as a stronger reduction in diversification over time is also reported for businesses operated by older, less educated, part-time farm operators. The analysis of diversification dynamics also suggests that (a) farms adjust to changes in their environment by steadily approaching their long-run equilibrium level of diversification ( B-convergence), and (b) the variance of the diversification distribution declines over time ( O-convergence).
The role of instructions and demonstrations in learning a coordination skill
Creators: name: Hodges, Nicola Jane
Publisher: name: University of British Columbia
Year: 2009

description: Four experiments were conducted to examine how pre-practice information affected the early stage of acquisition when the motor skill was not an existing part of the learner's movement repertoire. More specifically, the experiments examined why instruction concerning the correct way to perform a motor skill has a negative influence on acquisition and subsequently under what conditions it is useful. In all experiments participants practiced a difficult, bimanual coordination pattern, which resulted in circular shapes on a monitor. In Experiment 1 information prior to and during acquisition was manipulated to examine whether instructions benefited learning when feedback informed as to how they were implemented. No support was found for this prediction, somewhat due to the complexity of the feedback. When only circle feedback was provided pre-practice information hindered acquisition, which supported findings from an initial investigation. In the second experiment focus of attention was manipulated via the instructions to examine whether attention mediated the instructional effects. It was predicted that instructions directing attention onto the effects of the action would facilitate learning. This hypothesis was generally supported, however, non-instructed participants performed as well as an external focus group and all attention-directing instructions decreased the negative effects of feedback withdrawal. The final experiments were designed to examine whether instructions that built upon existing behaviours would facilitate acquisition when only a gradual replacement of an existing behaviour was required (Experiment 4) as compared to a qualitative change (Experiment 3). In Experiment 3, only participants biased to in- and anti-phase movements were studied (bi-stable). In Experiment 4 participants biased to patterns other than these (multi-stable) were examined. Instruction did not benefit learning, irrespective of initial bias. Instructions that built upon in-phase movements were detrimental to acquisition. More permanent changes to the underlying dynamics were manifest in post-practice scanning tasks for the non-instructed participants only. As a result of these studies it was concluded that movement demonstrations and instructions conveyed little useful information in the early stage of acquisition, if information regarding goal attainment was available. Instructions can hinder the break from prepractice patterns, but may possibly help refine the movement at a later stage.
Majorana-induced DC Shapiro steps in topological Josephson junctions
Creators: name: Choi, Sang-Jun
name: Calzona, Alessio
name: Trauzettel, Björn
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The demonstration of the non-Abelian properties of Majorana bound states (MBS) is a crucial step toward topological quantum computing. We theoretically investigate how Majorana fusion rules manifest themselves in the current-voltage characteristics of a topological Josephson junction. The junction is built on U-shaped quantum spin Hall edges and hosts a Majorana qubit formed by four MBS. Owing to Majorana fusion rules, inter- and intra-edge couplings among adjacent MBS provide two orthogonal components in the rotation axis of the Majorana qubit. We show that the interplay of the dynamics of the superconductor phase difference and the Majorana qubit governs the Josephson effect. Strikingly, we identify sequential jumps of the voltage across the junction with increasing DC current bias without external AC driving. Its role is replaced by the intrinsic Rabi oscillations of the Majorana qubit. This phenomenon, DC Shapiro steps, is a manifestation of the non-trivial fusion rules of MBS.
description: 4 pages, 3 figures
Additional file 2 of Neurogenesis-dependent antidepressant-like activity of Hericium erinaceus in an animal model of depression
Creators: name: Chong, Pit Shan
name: Poon, Chi Him
name: Roy, Jaydeep
name: Tsui, Ka Chun
name: Lew, Sze Yuen
name: Phang, Michael Weng Lok
name: Tan, Rachael Julia Yuenyinn
name: Cheng, Poh Guat
name: Fung, Man-Lung
name: Wong, Kah Hui
name: Lim, Lee Wei
Publisher: name: figshare
Year: 2021
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Molecular Biology
subject: Neuroscience
subject: Pharmacology
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 2: Table S1. 1H and 13C NMR (600 MHz) spectroscopic data for herierin IV (3) in MeOH-d4.
Two-Higgs-doublet model from the group-theoretic perspective
Creators: name: Ivanov, I. P.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: In the two-Higgs-doublet model, different Higgs doublets can be viewed as components of a generic "hyperspinor". We decompose the Higgs potential of this model into irreducible representations of the SU(2) group of transformations of this hyperspinor. We discuss invariant combinations of the Higgs potential parameters lambda_i that arise in this decomposition and provide simple and concise sets of conditions for the hidden Z_2-symmetry, Peccei-Quinn symmetry, and explicit CP-conservation in 2HDM. We show that some results obtained previously by brute-force calculations are reduced to simple linear algebraic statements in our approach.
description: 10 pages; v3: expanded section on consequences, added subsections on CP-conservation, PQ symmetry, RG evolution; v4: misprints corrected; to appear in Physics Letters B
2998: Granda Goffin, family hero
Creators: name: Project Team, Lest We Forget
Publisher: name: University of Oxford
Year: 2024
Subjects: classificationCode: 430304
subject: British history
classificationCode: 430308
subject: European history (excl. British, classical Greek and Roman)
classificationCode: 430316
subject: International history

description: I grew up always being told about my hero Granda, so much so that, on the anniversary of the commencement of WW1, I took Granda's surname into my own.

Granda was a miner, who lied about his age in order to go to war.

He told his daughter, my Mam, very little about the war but one story carries on through the family 100 years later. Granda told how, after witnessing a battle, his senior officer broke down in distress - he collapsed into Granda's lap & sat there like a baby, being hugged by my Granda as his senior officer cried like a baby.

Granda rescued a senior officer under fire, receiving a gallantry medal. He received another honour for being in advance of his unit, monitoring a village for hours: under constant fire, he went back & forth to his unit, feeding information about the enemy's position.

In total, Granda received the DCM twice (DCM & Bar) & the Military Medal.
A modest, kind, & gentle man, he returned to the mines after the war - his service underground killed him, dying a painful death of lung diseases.
MODELLING LAND DEGRADATION IN LOW-INPUT AGRICULTURE: THE 'POPULATION PRESSURE HYPOTHESIS' REVISED
Creators: name: Pascual, Unai
name: Barbier, Edward B.
name: Pascual, Unai
name: Barbier, Edward B.
Publisher: name: Unknown
Year: 2003
Subjects: Land Economics/Use

description: This paper provides a theoretical framework to analyse land quality and labour allocation decisions by poor rural households in the context of increased population densities in slash-and-burn (shifting cultivation) agro-ecosystems. A bio-economic optimal control model is presented and its results calibrated with data from two farming communities from Yucatan (Mexico). The ecological-economic model restates the validity of the neo-Malthusian 'Population Pressure Hypothesis' (PPH) as a major factor of land degradation. It is pointed out that 'fallow crises' may be overcome when the production elasticity of total farm labour is sufficiently high compared to the elasticity of substituion between farm labour and soil quality. Calibration of the model also suggests that the strategy by poor households is to allocate more labour to clearing forestland when population densities increase, hence adding to 'population pressure' on the forest commons.
Solar wind prediction using deep learning
Creators: name: Upendran, Vishal
name: Cheung, M. C. M
name: Hanasoge, Shravan
name: Krishnamurthi, Ganapathi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Emanating from the base of the Sun's corona, the solar wind fills the interplanetary medium with a magnetized stream of charged particles whose interaction with the Earth's magnetosphere has space-weather consequences such as geomagnetic storms. Accurately predicting the solar wind through measurements of the spatio-temporally evolving conditions in the solar atmosphere is important but remains an unsolved problem in heliophysics and space-weather research. In this work, we use deep learning for prediction of solar wind (SW) properties. We use Extreme Ultraviolet images of the solar corona from space based observations to predict the SW speed from the NASA OMNIWEB dataset, measured at Lagragian point 1. We evaluate our model against autoregressive and naive models, and find that our model outperforms the benchmark models, obtaining a best-fit correlation of 0.55 $\pm$ 0.03 with the observed data. Upon visualization and investigation of how the model uses data to make predictions, we find higher activation at the coronal holes for fast wind prediction ($\approx$ 3 to 4 days prior to prediction), and at the active regions for slow wind prediction. These trends bear an uncanny similarity to the influence of regions potentially being the sources of fast and slow wind, as reported in literature. This suggests that our model was able to learn some of the salient associations between coronal and solar wind structure without built-in physics knowledge. Such an approach may help us discover hitherto unknown relationships in heliophysics datasets.
description: 29 pages, 12 figures, accepted for publication in AGU: Spaceweather
Quantum parallel dense coding of optical images
Creators: name: Golubeva, T. Yu.
name: Golubev, Yu. M.
name: Sokolov, I. V.
name: Kolobov, M. I.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose quantum dense coding protocol for optical images. This protocol extends the earlier proposed dense coding scheme for continuous variables [S.L.Braunstein and H.J.Kimble, Phys.Rev.A 61, 042302 (2000)] to an essentially multimode in space and time optical quantum communication channel. This new scheme allows, in particular, for parallel dense coding of non-stationary optical images. Similar to some other quantum dense coding protocols, our scheme exploits the possibility of sending a classical message through only one of the two entangled spatially-multimode beams, using the other one as a reference system. We evaluate the Shannon mutual information for our protocol and find that it is superior to the standard quantum limit. Finally, we show how to optimize the performance of our scheme as a function of the spatio-temporal parameters of the multimode entangled light and of the input images.
description: 15 pages, 4 figures, RevTeX4. Submitted to the Special Issue on Quantum Imaging in Journal of Modern Optics
IMPACT OF AGRICULTURAL PROTECTION IN OECD-COUNTRIES ON SOUTH AFRICAN AGRICULTURE
Creators: name: Pustovit, Nataliya
name: Schmitz, P. Michael
name: Pustovit, Nataliya
name: Schmitz, P. Michael
Publisher: name: Unknown
Year: 2003
Subjects: International Relations/Trade

description: Agricultural protection in industrialized countries and price distortions in developing countries are accused to hamper economic and agricultural development and are partly responsible for poverty and hunger in the Third World. A multi-commodity multi-country comparative static trade model is used to simulate the impact of different policy scenarios in this typical second best world for the case of South Africa. Special emphasis is given to the disincentive effect of production and to endogenous policy responses in South Africa. In conclusion South Africa could benefit a lot by liberalizing trade and agricultural policies world wide, although it is an importer for most of the considered commodities.