cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Proceedings 40th International Conference on Logic Programming
Creators: name: Cabalar, Pedro
name: Fabiano, Francesco
name: Gebser, Martin
name: Gupta, Gopal
name: Swift, Theresa
Publisher: name: arXiv
Year: 2025
Subjects: subject: Logic in Computer Science (cs.LO)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Since the first conference In Marseille in 1982, the International Conference on Logic Programming (ICLP) has been the premier international event for presenting research in logic programming. These proceedings include technical communications about, and abstracts for presentations given at the 40th ICLP held October 14-17, in Dallas Texas, USA. The papers and abstracts in this volume include the following areas and topics. Formal and operational semantics: including non-monotonic reasoning, probabilistic reasoning, argumentation, and semantic issues of combining logic with neural models. Language design and programming methodologies such as answer set programming. inductive logic programming, and probabilistic programming. Program analysis and logic-based validation of generated programs. Implementation methodologies including constraint implementation, tabling, Logic-based prompt engineering, and the interaction of logic programming with LLMs.
Implications of SNO and BOREXINO results on Nuetrino Oscillations and Majorana Magnetic Moments
Creators: name: Kang, Sin Kyu
name: Kim, C. S.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Using the recent measurement of SNO salt phase experiment, we investigate how much the solar neutrino flux deficit observed at SNO could be due to $ν_e$ transition into antineutrino. Our analysis leads to rather optimistic conclusion that the SNO salt phase data may indicate the existence of Majorana magnetic moment. The prospect for the future BOREXINO experiment is also discussed.
description: 8 pages
Examining the Impact of Environmental Messaging on Behavioural Intentions
Creators: name: Cessa, Andrea Zavala
name: Leku, Alberije
name: Lu, Jing
name: Chen, Qiwen
Publisher: name: The University of British Columbia
Year: 2020

description: The Social Ecological Economic Development Studies (SEEDS) program is devoted to advancing environmentally responsible practices and encouraging innovation in sustainability at the University of British Columbia (UBC). To examine whether pro-environmental messaging impacts behavioural intentions, a between-subjects study design was conducted in UBC at the Vancouver campus. We were interested in determining whether exposure to a video showing the negative environmental impact of single-use coffee cup waste would be an effective nudge to reduce disposable cup use. We examined whether participants exposed to this sensory cue differed from participants who viewed a neutral video that was not environmentally charged. We also examined any difference between the two groups in regard to identified environmental concern, perceived environmental impact of disposable cups, and interest in environmental issues. Our analysis showed no statistically significant differences between the two groups, which may be due to a small sample size. However, the trends of the results revealed possible differences if a larger sample size had been employed for the study. Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”
Additional file 1 of Experiences and intentions of Ugandan household tuberculosis contacts receiving test results via text message: an exploratory study
Creators: name: Ggita, Joseph M.
name: Katahoire, Anne
name: Meyer, Amanda J.
name: Nansubuga, Elizabeth
name: Talemwa Nalugwa
name: Turimumahoro, Patricia
name: Ochom, Emmanuel
name: Ayakaka, Irene
name: Haberer, Jessica E.
name: Achilles Katamba
name: Armstrong-Hough, Mari
name: J. Lucian Davis
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: Additional file 1 Appendix S1: Interview guide. Appendix S2: Demographic Information Sheet.
Observable implications of geometrical and dynamical aspects of freeze-out in heavy ion collisions
Creators: name: Retiere, Fabrice
name: Lisa, Mike
Publisher: name: arXiv
Year: 2003
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Using an analytical parameterization of hadronic freeze-out in relativistic heavy ion collisions, we present a detailed study of the connections between features of the freeze-out configuration and physical observables. We focus especially on anisotropic freeze-out configurations (expected in general for collisions at finite impact parameter), azimuthally-sensitive HBT interferometry, and final-state interactions between non-identical particles. Model calculations are compared with data taken in the first year of running at RHIC; while not perfect, good agreement is found, raising the hope that a consistent understanding of the full freeze-out scenario at RHIC is possible, an important first step towards understanding the physics of the system prior to freeze-out.
description: 36 pages, 56 figures, 2 tables; version accepted for publication in PRC: some figures, references and discussion added; now also discusses classical versus quantum statistics
Thermodynamic Formalism for Random Weighted Covering Systems
Creators: name: Atnip, Jason
name: Froyland, Gary
name: González-Tokman, Cecilia
name: Vaienti, Sandro
Publisher: name: arXiv
Year: 2020
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: We develop a quenched thermodynamic formalism for random dynamical systems generated by countably branched, piecewise-monotone mappings of the interval that satisfy a random covering condition. Given a random contracting potential $φ$ (in the sense of Liverani-Saussol-Vaienti), we prove there exists a unique random conformal measure $ν_φ$ and unique random equilibrium state $μ_φ$. Further, we prove quasi-compactness of the associated transfer operator cocycle and exponential decay of correlations for $μ_φ$. Our random driving is generated by an invertible, ergodic, measure-preserving transformation $σ$ on a probability space $(Ω,\mathscr{F},m)$; for each $ω\inΩ$ we associate a piecewise-monotone, surjective map $T_ω:I\to I$. We consider general potentials $φ_ω:I\to\mathbb R\cup\{-\infty\}$ such that the weight function $g_ω=e^{φ_ω}$ is of bounded variation. We provide several examples of our general theory. In particular, our results apply to linear and non-linear systems including random $β$-transformations, randomly translated random $β$-transformations, random Gauss-Renyi maps, random non-uniformly expanding maps such as intermittent maps and maps with contracting branches, and a large class of random Lasota-Yorke maps.
description: 77 pages, 3 figures
Local Structure of Mott Insulating Iron Oxychalcogenides La$_{2}$O$_{2}$Fe$_{2}$O$M$$_{2}$ ($M$ = S, Se)
Creators: name: Karki, B.
name: Alfailakawi, A.
name: Frandsen, Benjamin A.
name: Everett, M. S.
name: Neuefeind, J. C.
name: Xu, Binjie
name: Wang, Hangdong
name: Fang, Minghu
name: Freelon, B.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We describe the local structural properties of the iron oxychalcogenides, La$_2$O$_2$Fe$_2$O$M_2$ ($M$ = S, Se), by using pair distribution function (PDF) analysis applied to total scattering data. Our results of neutron powder diffraction show that $M$ = S and Se possess similar nuclear structure at low and room temperatures. The local crystal structures were studied by investigating deviations in atomic positions and the extent of the formation of orthorhombicity. Analysis of the total scattering data suggests that buckling of the Fe$_2$O plane occurs below 100 K. The buckling may occur concomitantly with a change in octahedral height. Furthermore, within a typical range of 1-2 nm, we observed short-range orthorhombic-like structure suggestive of nematic fluctuations in both of these materials.
title: Legal, Political And Social Environments Of The Non-Governmental Sector Of Armenia
Creators: name: Nahapetyan, Argine
Publisher: name: The Open University
Year: 2002

description: This thesis explores the current situation of the non-governmental sector in Armenia, mainly concentrating on the legal (laws governing the sector), political (relations with the state structures) and social (relations with the public) environments of the operating non-governmental organisations (NGOs). The topic was not chosen randomly. The notion of non-governmental organisations is closely related to the notions of civil society and democracy. Moreover, a strong non-governmental sector is one of the attributes of a genuine democratic society. However, in Armenia the sector, is still weak and is developing quite slowly. The main obstacles hindering the future development of the sector are sufficient and incomplete legal regulations, unfavourable attitude of the state authorities, mistrust of the population, as well as numerous problems within the sector itself. Therefore, my thesis will concentrate mainly on the exploration of the above-mentioned problem areas.

 Taking into consideration the lack of in-depth studies in this extremely important area in Armenia, it can be concluded that the work will contribute to the support of the non-governmental sector as well as provide significant background for further investigation in this field.

 Though there was a great amount of secondary sources available on the topic of civil society and non-govemmental organisations in general, it was very difficult to obtain sources concerning particularly the NGOs in Armenia. The main problem is the lack of attention paid to the topic in the academic circles since the non-govemmental sector is a relatively new phenomenon in our reality. Therefore, chapters concerning the non- governmental sector in Armenia are mostly based on primary sources such as the laws governing the sector, interviews with NGO leaders as well as personal observations since I was working in the sector for 2 years. The situation became even more complicated due to the reluctance of some NGO leaders to cooperate. It was difficult to understand if this was due to overcrowded schedules or to willingness to speak on this topic. Nevertheless, most of the approached did grant interviews and were generally quite cooperative. Therefore, I would like to thank all of them for their support and collaboration. Also, I am grateful to the staff members of the NGO Training and Resource Center in Armenia where I was kindly provided with an opportunity to conduct my surveys and collect important materials. A special thanks goes also to my two supervisors, Pr. Jean Garland and Pr. Mathew Gibney for their great assistance and patience.
Costs and benefits of certification of independent oil palm smallholders in Indonesia
Creators: name: Hutabarat, Sakti
name: Slingerland, Maja
name: Rietberg, Petra
name: Dries, Liesbeth
name: Hutabarat, Sakti
name: Slingerland, Maja
name: Rietberg, Petra
name: Dries, Liesbeth
Publisher: name: Unknown
Year: 2018
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Crop Production/Industries
subject: Environmental Economics and Policy
subject: RSPO
subject: certification
subject: smallholders
subject: Indonesia
subject: oil palm
subject: costs and benefits

description: Sustainable certification schemes have surged in recent years. The introduction of these schemes poses serious challenges to smallholders. One such certification scheme is the Roundtable on Sustainable Palm Oil (RSPO), which uses certification to increase equitable and sustainable production of palm oil. This study calculates upfront and recurrent costs and monetary benefits of RSPO certification for the Amanah Independent Oil Palm Smallholders Association in Ukui District, Indonesia. Survey and interview data was collected between 2013 and 2015. Results show that upfront costs of certification were 86 euro per hectare. Furthermore, despite generating up to 21% higher revenues from sales, certification created up to an 8% loss of net income per hectare on average per smallholder in the first year after certification, compared to the situation prior to certification. To motivate smallholders for RSPO certification, the economic performance of certified oil palm smallholders should be improved. This can result from further yield increases, a guaranteed premium price or the sales of GreenPalm certificates to provide additional income.
title: Modulated Microwave Retro-reflectors and Their Applications
Creators: name: Thornton, John
Publisher: name: The Open University
Year: 2002

description: This work seeks to investigate the viability of establishing communications links using modulated microwave reflectors, and explores potential application areas. A primary and underlying objective has been to combine modulation of radar cross section (RCS) with the wide-angle RCS response of a microwave retro-reflector so as to yield a transponder which imparts information content on the reflected spectrum. Since the RCS is electrically large, the communications link is directive and yet the transponder is not a transmitter of microwave energy and hence has modest power needs.

 The microwave retro-array was quickly identified as the most promising structure to achieve these aims, and hence the further objectives of the work have been to investigate this structure and fabricate working prototypes so as to:
 • achieve a manufacturable structure.
 • perform measurements to compare with theoretical models of behaviour.
 • explore the limits of performance, and seek to expand them.
 • identify applications and markets.
 • explore and pursue such related discoveries that may occur.

 All the above aims have been explored to some extent, and the findings have been reported in the body of the thesis. The background and historical context is discussed in chapter 1, while chapter 2 reports on the construction and characterisation of 16- element modulated retro-array prototypes operating at a 2.5 GHz carrier frequency. The applied nature of this work is extended in chapters 3 and 4 to printed integrated circuits for passive transponders, and the scaling of these methods to frequencies around 9.2 GHz. Theoretical models for the properties of much larger arrays are presented in chapter 5, and range finding applications and results presented in chapter 6. Two applications are then discussed for which the required array dimensions are estimated, before closing with conclusions and suggestions for future work.
Gravitomagnetic corrections to the lensing deflection angle for spiral galaxy models
Creators: name: Capozziello, S.
name: Cardone, V. F.
name: Re, V.
name: Sereno, M.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We investigate the effects of the gravitomagnetic corrections to the usual gravitational lens quantities for a specific lensing mass distribution modelled after spiral galaxies. An exponential disk is embedded into two different spherical halo models where disk and haloes parameters are fixed according to the observed mass to light ratios, galaxy magnitudes and rotation curves. The general expressions for the lensing deflection angle are given also taking into account the orientation of the galaxy disk plane with respect to the lens plane. It is found that the gravitomagnetic term changes the deflection angle by a typical amount of the order of ten microarcseconds.
description: 7 pages, 2 figures, accepted for publication on MNRAS
Restrictions on possible forms of classical matter fields carrying no energy
Creators: name: Sokolowski, Leszek M.
Publisher: name: arXiv
Year: 2003
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: It is postulated in general relativity that the matter energy-momentum tensor (named the stress tensor) vanishes if and only if all the matter fields vanish. In classical lagrangian field theory the stres tensor is the variational (symmetric) one and a priori it might occur that for some systems the tensor is identically zero for all field configurations whereas evolution of the system is subject to deterministic equations of motion. Such a system would not generate its own gravitational field. To check if suchsystems may exist we find a relationship between the stress tensor and the Euler operator. We prove that if a system of n interacting scalar fields (n cannot exceed the spacetime dimension d) or a single vector field (if d is even) has the stress tensor such that its divergence is identically zero ("on and off shell"), then the Lagrange equations of motion hold identically too. These systems are unphysical as having no propagation equations at all. Thus nontrivial field equations imply the nontrivial stress tensor. The theorem breaks down if the of the field components n is greater than d. We show that for n>d matter systems without energy and their own gravity (and yet detectable) are in principle admissible. Their equations of motion are degenerate. We also show for which matter systems their stress tensors cannot vanish for all solutions of the field equations.
description: 25 pages, to appear in Acta Phys. Polon. B (2004)
Determinants of financing decisions and management implications: evidence from Spanish agricultural cooperatives
Creators: name: Mateos-Ronco, Alicia
name: Guzman-Asuncion, Sandra
name: Mateos-Ronco, Alicia
name: Guzman-Asuncion, Sandra
Publisher: name: Unknown
Year: 2018
Subjects: subject: Agricultural and Food Policy
subject: Agricultural Finance
subject: agricultural cooperative
subject: financing decisions
subject: debt
subject: capital structure
subject: financial theories

description: The unique characteristics of agricultural cooperatives are likely to affect the availability of the funding they can access. This paper analyses the determining factors behind the financing decisions made in these cooperatives, and the management and organisational implications these decisions have for these entities. Financial information obtained from a sample of 106 Spanish agricultural cooperatives was used to calculate the variables that modelled the research hypotheses, which were then introduced into regression models to determine which ones had a significant effect on their financing decisions. According to the economic theory of cooperativism, the results show that these entities come closer to the pecking order theory, i.e. policies that maximise the prices received by members to the detriment of the entity’s self-financing abilities, coupled with restrictions on cooperatives’ equity capital that may lead them to use debt to fund growth. The results also show positive relationships between cooperatives’ indebtedness and other factors, such as investments in non-current assets, liquidity and cooperative size in terms of turnover per member.
Neutrino decoherence in an electron and nucleon background
Creators: name: Nieves, José F.
name: Sahu, Sarira
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider the decoherence effects in the propagation of active neutrinos due to the non-forward neutrino scattering processes in a matter background composed of electrons and nucleons. We calculate the contribution to the imaginary part of the neutrino self-energy arising from such processes. Since the initial neutrino state is depleted but does not actually disappear (the initial neutrino transitions into a neutrino of a different flavor but does not decay) those processes should be associated with decoherence effects that cannot be described in terms of the coherent evolution of the state vector. Based on the formalism developed in our previous work for treating the non-forward scattering processes using the notion of the stochastic evolution of the state, we identify the jump operators, as used in the context of the master or Lindblad equation, in terms of the results of the the calculation of the non-forward neutrino scattering contribution to the imaginary part of the neutrino self-energy. As a guide to estimating the decoherence effects in situations of practical interest we give explicit formulas for the decoherence terms for different background conditions, and point out some of the salient features in particular the neutrino energy dependence. To establish contact wih previous works in which the decoherence terms are treated as phenomenological parameters, we consider the solution to the evolution equation in the two-generation case. We give formulas that are useful for estimating the effects of the decoherence terms under various conditions and environments, including the typical conditions applicable to long baseline experiments, where matter effects are important. In those contexts the effects appear to be small, and indicative that if significant decoherence effects were to be found they would be due to non-standard contributions to the decoherence terms.
description: 27 Pages, 2 Figures, Typographical errors in Eqs. (6.5) and (6.11) of the PRD published version have been corrected. arXiv admin note: text overlap with arXiv:1909.11271
FOR IMMEDIATE RELEASE: Anne Moody to be Honored with Marker on the Mississippi Writers Trail: Unveiling ceremony set for March 31 in her hometown of Centreville, Miss.
Creators: name: Barnes, Roscoe
Publisher: name: figshare
Year: 2020
Subjects: subject: 210304 Biography
subject: FOS: History and archaeology
subject: Ethnic Studies
subject: Gender studies
subject: 210399 Historical Studies not elsewhere classified
subject: History
subject: 160803 Race and Ethnic Relations
subject: FOS: Sociology

description: ‘UNVEILING’ UPDATE:
Ms. Maggie Lowery of Visit Mississippi informed me via email today, March 16, 2020, that the unveiling of the Anne Moody marker has been postponed due to COVID-19. I will provide an update when more information is made available.

--------
This is a news report about Anne Moody and the marker she’s receiving on the Mississippi Writers Trail. Moody, the author of Coming of Age in Mississippi, was a civil rights pioneer. The marker will be unveiled on Tuesday, March 31, 2020, in her hometown of Centreville, Miss.
#AnneMoody #ComingOfAgeinMississippi
On Zurek's derivation of the Born rule
Creators: name: Schlosshauer, Maximilian
name: Fine, Arthur
Publisher: name: arXiv
Year: 2003
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Recently, W. H. Zurek presented a novel derivation of the Born rule based on a mechanism termed environment-assisted invariance, or "envariance" [W. H. Zurek, Phys. Rev. Lett. 90(2), 120404 (2003)]. We review this approach and identify fundamental assumptions that have implicitly entered into it, emphasizing issues that any such derivation is likely to face.
description: 8 pages; v2: minor clarifications added; v3: reference to Zurek's quant-ph/0405161 added. To appear in Foundations of Physics (Cushing Volume)
Vacuum entanglement harvesting with a zero mode
Creators: name: Tjoa, Erickson
name: Martín-Martínez, Eduardo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate vacuum entanglement harvesting in the presence of a zero mode. We show that, for a variety of detector models and couplings (namely, Unruh-DeWitt qubit and harmonic oscillator detectors, amplitude and derivative coupling), the results are strongly dependent on the state of the zero mode, revealing an ambiguity in studies of entanglement harvesting with Neumann or periodic boundary conditions, or in general in spacetimes with toroidal topologies.
description: 10 pages, 2 Figures. V4: fixed typo on the general expression for Eq.(16), results unaffected
Dielectronic recombination data for dynamic finite-density plasmas I. Goals and methodology
Creators: name: Badnell, N. R.
name: O'Mullane, M. G.
name: Summers, H. P.
name: Altun, Z.
name: Bautista, M. A.
name: Colgan, J.
name: Gorczyca, T. W.
name: Mitnik, D. M.
name: Pindzola, M. S.
name: Zatsarinny, O.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A programme is outlined for the assembly of a comprehensive dielectronic recombination database within the generalized collisional--radiative (GCR) framework. It is valid for modelling ions of elements in dynamic finite-density plasmas such as occur in transient astrophysical plasmas such as solar flares and in the divertors and high transport regions of magnetic fusion devices. The resolution and precision of the data are tuned to spectral analysis and so are sufficient for prediction of the dielectronic recombination contributions to individual spectral line emissivities. The fundamental data are structured according to the format prescriptions of the Atomic Data and Analysis Structure (ADAS) and the production of relevant GCR derived data for application is described and implemented following ADAS. The requirements on the dielectronic recombination database are reviewed and the new data are placed in context and evaluated with respect to older and more approximate treatments. Illustrative results validate the new high-resolution zero-density dielectronic recombination data in comparison with measurements made in heavy-ion storage rings utilizing an electron cooler. We also exemplify the role of the dielectronic data on GCR coefficient behaviour for some representative light and medium weight elements.
description: 14 Pages, 9 Figures. Submitted to Astronomy & Astrophysics April 12, 2003
Radiative Heat Transfer in Free-Standing Silicon Nitride Membranes
Creators: name: Zhang, Chang
name: Giroux, Mathieu
name: Nour, Thea Abdul
name: St-Gelais, Raphael
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Free-standing silicon nitride (SiN) mechanical resonators are of central interests in applications such as temperature and mass sensing, and for fundamental optomechanical reasearch. Understanding thermal coupling between a membrane resonator and its environment is required for predicting thermal noise, frequency noise, as well as sensors responses to temperature changes. In this work, we provide closed-form derivations of intrinsic thermal coupling quantities in free-standing thin films, namely total thermal conductance with the surroundings, thermal response time, and the relative contribution of thermal radiation. Our model is valid for any free-standing thin film anchored on all sides, although we particularly emphasize the specific case of SiN for which spectral emissivity is thoroughly investigated as a function of thickness and temperature. We find that radiative heat exchanges can play a non-negligible role, and even dominate thermal coupling for membranes of sizes commonly employed in optomechanics experiments. We experimentally confirm the validity of our model by measuring radiative thermal coupling between a SiN mechanical resonator and a ceramic heater in high vacuum.
Oral Roberts and The Voice of Healing
Creators: name: Barnes, Roscoe
Publisher: name: figshare
Year: 2020
Subjects: subject: 210304 Biography
subject: FOS: History and archaeology
subject: 220401 Christian Studies (incl. Biblical Studies and Church History)
subject: FOS: Philosophy, ethics and religion
subject: 210399 Historical Studies not elsewhere classified
subject: History
subject: 220499 Religion and Religious Studies not elsewhere classified
subject: Religious Studies
subject: 220402 Comparative Religious Studies

description: Was Oral Roberts an official member of the Voice of Healing organization? Here’s a look at his “agreement” with Gordon Lindsay. Their relationship is described by David E. Harrell Jr. in his book, "Oral Roberts: An American Life (Indiana University Press, 1985).
Ricci-flat deformation of orbifolds and localized tachyonic modes
Creators: name: Imamura, Yosuke
name: Koyama, Fumikazu
name: Nobuyama, Ryuji
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study Ricci-flat deformations of orbifolds in type II theory. We obtain a simple formula for mass corrections to the twisted modes due to the deformations, and apply it to originally tachyonic and massless states in several examples. In the case of supersymmetric orbifolds, we find that tachyonic states appear when the deformation breaks all the supersymmetries. We also study nonsupersymmetric orbifolds C^2/Z_{2N(2N+1)}, which is T-dual to N type 0 NS5-branes. For N>=2, we compute mass corrections for states, which have string scale tachyonic masses. We find that the corrected masses coincide to ones obtained by solving the wave equation for the tachyon field in the smeared type 0 NS5-brane background geometry. For N=1, we show that the unstable mode representing the bubble creation is the unique tachyonic mode.
description: 20 pages, minor collections
Derived demand for African indigenous vegetable seed: implications for farmer-seed entrepreneurship development
Creators: name: Kanslime, Monica K.
name: Karanja, Daniel K.
name: Alokit, Christine
name: Ochieng, Justus
name: Kanslime, Monica K.
name: Karanja, Daniel K.
name: Alokit, Christine
name: Ochieng, Justus
Publisher: name: Unknown
Year: 2018
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Crop Production/Industries
subject: Farm Management
subject: diversification
subject: elasticity
subject: good seed initiative
subject: seed demand
subject: seed entrepreneurship

description: African indigenous vegetables (AIVs) hold potential to address food security and nutrition in Africa. Their production and consumption remain constrained by lack of quality seed. Efforts to promote commercial seed production lack information about the effective demand of AIV seed. This study estimated derived demand for input seed in central Uganda using trans-log production model. Own-price and cross-price elasticities for production inputs were estimated using marginal approach. Seed demand analysis showed that farmers would utilise seed from market sources of approximately 32 tons per year, against current formal supply of 4.4 tons. Estimated price elasticities showed that purchased seed was less sensitive to its own price, implying less significant effect of price change on the quantity of seed demanded over time. Seed production exhibited higher gross margins and returns to labour day compared to vegetable production, suggesting prospects of profitability and sustainability of farmer-seed enterprises as an alternative source of quality seed for farmers.
Passer rufidorsalis subsp. megarhynchos C. L. Brehm
Creators: name: Lecroy, Mary
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Aves
Passeriformes
Passeridae
Passer
Passer rufidorsalis
Passer rufidorsalis megarhynchos c.l. brehm

description: Passer rufidorsalis megarhynchos C.L. Brehm
Passer rufidorsalis C.L. Brehm, 1855b: 277 (in N.- O.-Afrika).
Passer rufidorsalis megarhynchos C.L. Brehm, 1856: 376 (in Ostsudahn und sind bei Chartum).
Now Passer domesticus rufidorsalis C.L. Brehm, 1855. See Hartert, 1918a: 15; Vaurie, 1959: 570– 571; Dickinson, 2003: 716; and Summers-Smith, 2009: 793–794.
LECTOTYPE: AMNH 456520, adult male, collected on the Blue Nile (Blauer Nil, as on label), Sudan, on 25 October 1850, by A.E. Brehm. From the Brehm Collection via the Rothschild Collection.
COMMENTS: In the original description of rufidorsalis, Brehm did not say how many specimens he had or identify a specimen that could be considered a type; however, the only locality mentioned was ‘‘N.-O-Afrika.’’ Hartert (1918a: 15) discussed the species and considered the above specimen the type of P. rufidorsalis, thereby designating it the lectotype. Although the specimen is marked ‘‘ Passer rufidorsalis medius’’ by Brehm, Hartert was unable to confirm that the name ‘‘medius’’ had ever been published. Later, Vaurie (1959: 570) restricted the type locality of P. rufidorsalis to Kartoum, Sudan. This restriction is not valid according to the Code (ICZN, 1999: 87, Art. 76.2), as the Blue Nile is the collecting locality of the lectotype, according to the label information.
Hartert (1918a: 15) also thought that the same specimen fit Brehm’s (1856: 376–377) description of Passer rufidorsalis megarhynchos and was the type of both names. In his description of megarhynchos, Brehm divided his P. rufidorsalis into two subspecies, megarhynchos and microrhynchos, noting that he had specimens of both in both sexes. There are only two Brehm specimens labeled ‘‘ medius ’’ by him, the other being a female specimen also said to have come from the Blue Nile and collected on the same date. If AMNH 456520 is accepted as the lectotype of megarhynchos, then AMNH 456522, female, collected on the Blue Nile, on 25 October 1850, by A.E. Brehm should be considered a paralectotype of megarhynchos.
Both megarhynchos and microrhynchos were said to live ‘‘in Ostsudahn und sind bei Chartum nicht eben selten,’’ but in the description of P. rufidorsalis, the only locality mentioned was northeast Africa. AMNH 456523, female, was collected at Khartoum on 30 September 1850, but it is labeled ‘‘minor’’ by Brehm and was not discussed by Hartert.
description: Published as part of Lecroy, Mary, 2014, Type Specimens Of Birds In The American Museum Of Natural History Part 12. Passeriformes: Ploceidae, Sturnidae, Buphagidae, Oriolidae, Dicruridae, Callaeidae, Grallinidae, Corcoracidae, Artamidae, Cracticidae, Ptilonorhynchidae, Cnemophilidae, Paradisaeidae, And Corvidae, pp. 1-165 in Bulletin of the American Museum of Natural History 2014 (393) on page 6, DOI: 10.1206/885.1, http://zenodo.org/record/4629954
PHOTONAI -- A Python API for Rapid Machine Learning Model Development
Creators: name: Leenings, Ramona
name: Winter, Nils Ralf
name: Plagwitz, Lucas
name: Holstein, Vincent
name: Ernsting, Jan
name: Steenweg, Jakob
name: Gebker, Julian
name: Sarink, Kelvin
name: Emden, Daniel
name: Grotegerd, Dominik
name: Opel, Nils
name: Risse, Benjamin
name: Jiang, Xiaoyi
name: Dannlowski, Udo
name: Hahn, Tim
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Software Engineering (cs.SE)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: PHOTONAI is a high-level Python API designed to simplify and accelerate machine learning model development. It functions as a unifying framework allowing the user to easily access and combine algorithms from different toolboxes into custom algorithm sequences. It is especially designed to support the iterative model development process and automates the repetitive training, hyperparameter optimization and evaluation tasks. Importantly, the workflow ensures unbiased performance estimates while still allowing the user to fully customize the machine learning analysis. PHOTONAI extends existing solutions with a novel pipeline implementation supporting more complex data streams, feature combinations, and algorithm selection. Metrics and results can be conveniently visualized using the PHOTONAI Explorer and predictive models are shareable in a standardized format for further external validation or application. A growing add-on ecosystem allows researchers to offer data modality specific algorithms to the community and enhance machine learning in the areas of the life sciences. Its practical utility is demonstrated on an exemplary medical machine learning problem, achieving a state-of-the-art solution in few lines of code. Source code is publicly available on Github, while examples and documentation can be found at www.photon-ai.com.
Ultra-low dissipation Josephson transistor
Creators: name: Giazotto, F.
name: Taddei, F.
name: Heikkila, T. T.
name: Fazio, R.
name: Beltram, F.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A superconductor-normal metal-superconductor (SNS) transistor based on superconducting microcoolers is presented. The proposed 4-terminal device consists of a long SNS Josephson junction whose N region is in addition symmetrically connected to superconducting reservoirs through tunnel barriers (I). Biasing the SINIS line allows to modify the quasiparticle temperature in the weak link, thus controlling the Josephson current. We show that, in suitable voltage and temperature regimes, large supercurrent enhancements can be achieved with respect to equilibrium, due to electron ``cooling'' generated by the control voltage. The extremely low power dissipation intrinsic to the structure makes this device relevant for a number of electronic applications.
description: 4 pages, 3 figures, to appear in Applied Physics Letters
Exo-MerCat v2.0.0: updates and open-source release of the Exoplanet Merged Catalog software
Creators: name: Alei, Eleonora
name: Marinoni, Silvia
name: Bignamini, Andrea
name: Claudi, Riccardo
name: Molinaro, Marco
name: Vicinanza, Martina
name: Benatti, Serena
name: Carleo, Ilaria
name: Mandell, Avi
name: Menti, Franziska
name: Zinzi, Angelo
Publisher: name: arXiv
Year: 2025
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Exoplanet research is at the forefront of contemporary astronomy recommendations. As more and more exoplanets are discovered and vetted, databases and catalogs are built to collect information. Various resources are available to scientists for this purpose, though every one of them has different scopes and notations. In Alei et al. (2020) we described Exo-MerCat, a script that collects information from multiple sources and creates a homogenized table. In this manuscript, we announce the release of the Exo-MerCat v2.0.0 script as an upgraded, tested, documented and open-source software to produce catalogs. The main upgrades on the script concern: 1) the addition of the TESS Input Catalog and the K2 Input Catalog as input sources; 2) the optimization of the main identifier queries; 3) a more complex merging of the entries from the input sources into the final catalog; 4) some quality-of-life improvements such as informative flags, more user-friendly column headers, and log files; 5) the refactoring of the code in modules. We compare the performance of Exo-MerCat v2.0.0 with the previous version and notice a substantial improvement in the completeness of the sample, thanks to the addition of new input sources, and its accuracy, because of the optimization of the script.
description: 18 pages, 3 figures. Accepted for publication on Astronomy and Computing. Previous publication: arXiv:2002.01834
Factors affecting consumers’ willingness to pay for animal welfare eggs in Taiwan
Creators: name: Yang, Yu-Chen
name: Yang, Yu-Chen
Publisher: name: Unknown
Year: 2018
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Food Consumption/Nutrition/Food Safety
subject: farm animal welfare
subject: contingent valuation method
subject: willingness to pay
subject: food safety concerns
subject: ethical concerns

description: In this research, a dichotomous choice contingent valuation survey was conducted to investigate consumers’ willingness to pay for animal welfare eggs in Taiwan. A double-bounded interval-data model is used to estimate willingness to pay for animal welfare eggs. The estimation results showed that the average willingness to pay is 14.4259 NTD per egg. The results of this research also showed that demographic variables such as age, income, education degree, occupation, and religion had an impact on willingness to pay for animal welfare eggs. The respondents associate with traditional religions such as Buddhism and Taoism were willing to pay more than those who were unassociated. The empirical results also revealed that respondents were willing to pay for animal welfare products partly because of their food safety concerns.
ECONOMIC INCENTIVES FOR SOIL CONSERVATION: A DINAMIC GAME MODEL
Creators: name: Benito Amaro, I.
name: Benito Amaro, I.
Publisher: name: Unknown
Year: 2018
Subjects: Agricultural and Food Policy
Land Economics/Use

description: This paper presents a theoretical model to analyze the incentives for protecting soil productivity in presence of separation of property and control in agricultural land. Using a dynamic model of contracts between the landlords and operators we analyze the incentives of different type of contracts (fixed rate contracts or sharecropping contracts) and their potential impact on soil conservation. The main research question of this paper is: do landlords and tenants have conflicting incentives regarding soil conservation? Our theoretical results are consistent with previous empirical literature that find that, depending on the contract specifications, there are no conflicting incentives.
The Use of Informative Educational Posters in Reusable Cups Usage
Creators: name: Zhang, Catherine
name: Yuan, Elsie Yiwen
name: Su, Jonathan
name: DeBungie, Averia
Publisher: name: The University of British Columbia
Year: 2020

description: The current study motivated to study is that will the use of informative, educational posters (environmental awareness) influence the usage of the reusable cup on the UBC campus? To operate the study, we hypothesized the cognitive reminder on the consequences of environmental harmful behavior would increase the reusable cup usage. We used naturalistic observation to measure if the reusable cups using rate increased and an online survey to study the collect more data to study the possible influential factors that may affect the results. In the online survey, chi-square shows that our posters are more informative than UBC posters. However, the chi-square results show that form the naturalistic observation, and this is no significant relationship between the new posters exposure and the reusable cups using rate. Therefore, the results do not support our hypothesis. Due to the COVID-19 pandemic, we have to collect naturalistic observation data after two days of the new posters exposure, and it may cause the failure to prove our hypothesis. The result of the descriptive analysis also suggests that our posters remain low exposure, and the posters' exposure extent is different at locations. Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”
Information, retail channel and consumers WTP for food safety in Argentina.
Creators: name: Berges, M.
name: Casellas, K.
name: Echeverria, L.
name: Urquiza Jozami, G.
name: Berges, M.
name: Casellas, K.
name: Echeverria, L.
name: Urquiza Jozami, G.
Publisher: name: Unknown
Year: 2018
Subjects: Food Consumption/Nutrition/Food Safety
International Development

description: In Argentina, the incidence of hemolytic uremic syndrome (HUS) is high, with approximately 420 new cases observed each year. A strain called VTEC 0157 of Escherichia coli (E. coli) was identified as the primary cause of HUS. The retail sale of beef in Argentina is marketed mainly without labels, brands or certifications, in butchers shops that represent 75% of the market share. In the context of the Healthy Butchers program, bacteriological evaluations at butcher shops detected cross contamination of food with pathogens in beef retail environment. In this paper, we measure consumer preferences for selected food safety attributes in beef and butcher shops, taking their information and knowledge about safety into account. We use a discrete choice experiment to assess consumers WTP using primary data from Buenos Aires, Argentina. Results suggest that consumers’ utility increases when there is a cashier at the butcher shop, the butcher wears gloves and uses recommended tables to cut meat, and beef products have a properly lay out at meat display fridge at consumers’ sight. Consumers’ knowledge and information about foodborne diseases and beef contamination risks increase the WTP for safety attributes at butcher shops. This effect is especially stronger for the last two mentioned attributes, which require a more detailed observation from consumers. Implications for food retail managers and policy-makers are discussed.
Farmers’ preference and willingness to pay for Ecosystem Services from Small-scale Agricultural Management Intervention Options in Burkina Faso: A Discrete Choice Experiment Approach
Creators: name: Houessionon, P.
name: Houessionon, P.
Publisher: name: Unknown
Year: 2018
Subjects: subject: Agricultural and Food Policy
subject: Burkina Faso
subject: climate change
subject: agriculture
subject: AWM interventions
subject: ecosystem services
subject: economic valuation
subject: choice experiment
subject: willingness to pay

description: The main purpose of this paper is to estimate farmers’ preferences and their willingness to pay (WTP) for ecosystem services derived from four agricultural water management (AWM) and resource recovery and reuse (RRR) intervention options in Burkina Faso, using choice experiment (CE). These include; small water infrastructures, drip irrigation, organic matter recovery from waste, and treated wastewater. The design decisions relating to attribute selection, the level of attributes, alternatives and choice tasks were guided by literature, field visit, focus group discussions, experts input and an iterative process of STATA to generate an orthogonal main effects CE design. The data used was generated from a random sample of 300 farm households in the Dano and Ouagadougou municipalities in Burkina Faso. Results from conditional logit, latent class logit and mixt logit models show that farmers have positive and significant preferences for drip irrigation, treated waste water and organic matter. However, they are WTP on average, more for drip irrigation and organic matter for agricultural sustainability. In line with economic theory, the cost of an intervention reduces demand for a given intervention. These findings can provide policy makers with evidence for agricultural policy design to build farmers’ resilience in the Sahel.