cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Neutrino Cooled disk in GRB central engine
Creators: name: Janiuk, A.
name: Yuan, Y.
name: Perna, R.
name: DiMatteo, T.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: At the extreme densities and temperatures typical of the central engine of GRBs, the accreting torus is cooled mainly by advection and by neutrino emission. The latter process is dominated by electron and positron capture onto nucleons ($β$ reactions). We calculate the reaction rates and the nuclear composition of matter, assuming that the torus consists of helium, eletron-positron pairs, free neutrons and protons. After determining the equation of state and solving for the disk structure for a given initial accretion rate, we subsequently follow its time evolution. We find that, for accretion rates of the order of $10 M_{\odot}$/s, likely typical for the early stages of the accretion event, the disk becomes unstable, giving rise to variable energy output. This instability may play an important role for producing internal shocks.
description: 4 pages, 3 figures; to appear in Proceedings of the Conference "Astrophysical Sources of High Energy Particles and Radiation", held in Torun, Poland, 20-24 June 2005
Pecuniary, Non-Pecuniary, and Downstream Research Spillovers: The Case of Canola
Creators: name: Gray, Richard S.
name: Malla, Stavroula
name: Tran, Kien C.
name: Gray, Richard S.
name: Malla, Stavroula
name: Tran, Kien C.
Publisher: name: Unknown
Year: 2005
Subjects: subject: Research and Development/Tech Change/Emerging Technologies
subject: basic research
subject: applied research
subject: public research expenditures
subject: private research expenditures
subject: biotechnology

description: This paper develops an empirical framework for estimating a number of inter-firm and downstream research spillovers in the canola crop research industry. The spillovers include basic research, human capital/ knowledge (as measured through other-firm expenditures), and genetics (as measured through yields of other-firms). The model used to examine spillover effects on research productivity provides evidence that there are many positive inter-firm non-pecuniary research spillovers, which is consistent with a research clustering effect. The second model, which examines spillovers at the level of firm revenue , shows that, while private firms tend to crowd one another, public firm expenditure on basic and applied research creates a crowding-in effect for private firms. This model also shows that enhanced intellectual property rights have increased the revenues of private firms. The third model, which examines social value of each firm's output, provides evidence that downstream research spillovers remain important in this modern crop research industry.
Analysis of temporal structures of seismic events on different scale levels
Creators: name: German, V.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: A statistical model for describing the scaling of the distribution of inter-event times is described. By considering the diverse region seismicity (natural and induced) at different scale levels the self-similarity of the distribution has been determined. Significant deviations occur only in the area of maximum magnitude (maximum energy class). A comparison between the distribution of inter-event times at different scale levels and the most popular distributions of reliability theory has been carried out. The distribution of inter-event times for different scale levels is well approximated by the Weibull distribution. The Weibull distribution, with parameters which obey the scaling model and the Gutenberg-Richter law, have been tested.
description: 21 pages, 4 figures, results was reported in Euroconference 2004 (Potsdam)
A unified view of the first-excited $2^+$ and $3^-$ states of Cd, Sn and Te isotopes
Creators: name: Maheshwari, Bhoomika
Publisher: name: arXiv
Year: 2020
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Symmetries are known to play an important role in the low lying level structure of Sn isotopes, mostly in terms of the seniority and generalized seniority schemes. In this paper, we revisit the multi-j generalized seniority approach for the first excited $2^+$ and $3^-$ states in the Cd ($Z=48$), Sn ($Z=50$) and Te ($Z=52$) isotopes, where the Cd and Te isotopes represent two-proton hole and two-proton particle nuclei, thus involving both kind of particles (protons and neutrons) in contrast to Sn isotopes. Interestingly, the approach based on neutron valence space alone is able to explain the B(E2) and B(E3) trends respectively for the $2^+$ and $3^-$ states in all the three Cd, Sn and Te isotopes. The new results on the inverted parabolic behavior of B(E3) values in Cd and Te isotopes are understood in a manner identical to that of Sn isotopes by using the generalized seniority scheme. No shell quenching is supported by these calculations; hence, the neutron magic numbers, $N=50$ and $N=82$, remain robust in these isotopic chains. It is quite surprising that the generalized seniority continues to be reasonably successful away from the semi-magic region, thus providing a unifying view of the $2^+$ and $3^-$ states.
description: Accepted in European Physical Journal Special Topics on role of symmetries in nuclear physics. arXiv admin note: substantial text overlap with arXiv:1908.05028
Implementation of EU Agri-Environmental Measures at the Regional Level: Economic and Political Constraints
Creators: name: Bertoni, Danilo
name: Peri, Massimo
name: Olper, Alessandro
name: Bertoni, Danilo
name: Peri, Massimo
name: Olper, Alessandro
Publisher: name: Unknown
Year: 2005
Subjects: subject: Environmental Economics and Policy
subject: agri-environmental measures
subject: CAP
subject: regional and agricultural policy

description: In this paper we apply a political objective function approach developed by Salhofer and Glebe (2004) to explain the high variability of agri-environmental program implementation at the EU regional level. The analysis covers 55 EU regions during the period 2001-2002, using basic data extracted from the Common Monitoring Indicators collected by the UE Commission for the programme's evaluation process. The main results indicate that the area covered by agri-environmental programs increases in regions where budget constraints are less severe and where the social demand for environmental amenities is more relevant. Moreover, agri-environmental programs are negatively related to the participation opportunity cost and show a non linear relation with the farmer's political weight.
Student understanding of Fermi energy, the Fermi-Dirac distribution and total electronic energy of a free electron gas
Creators: name: Justice, Paul
name: Marshman, Emily
name: Singh, Chandralekha
Publisher: name: arXiv
Year: 2020
Subjects: subject: Physics Education (physics.ed-ph)
subject: FOS: Physical sciences

description: We investigated the difficulties that physics students in upper-level undergraduate quantum mechanics and graduate students after quantum and statistical mechanics core courses have with the Fermi energy, the Fermi-Dirac distribution and total electronic energy of a free electron gas after they had learned relevant concepts in their respective courses. These difficulties were probed by administering written conceptual and quantitative questions to undergraduate students and asking some undergraduate and graduate students to answer those questions while thinking aloud in one-on-one individual interviews. We find that advanced students had many common difficulties with these concepts after traditional lecture-based instruction. Engaging with a sequence of clicker questions improved student performance, but there remains room for improvement in their understanding of these challenging concepts.
Critical Temperatures of a Two-Band Model for Diluted Magnetic Semiconductors
Creators: name: Popescu, F.
name: Yildirim, Y.
name: Alvarez, G.
name: Moreo, A.
name: Dagotto, E.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Using Dynamical Mean Field Theory (DMFT) and Monte Carlo (MC) simulations, we study the ferromagnetic transition temperature Tc of a two-band model for Diluted Magnetic Semiconductors (DMS), varying coupling constants, hopping parameters, and carrier densities. We found that Tc is optimized at all fillings p when both impurity bands (IB) fully overlap in the same energy range, namely when the exchange couplings J and bandwidths are identical. The optimal Tc is found to be about twice larger than the maximum value obtained in the one-band model, showing the importance of multiband descriptions of DMS at intermediate J's.
description: 6 pages, 5 eps figures, to be published in Physical Review B
title: Enhancing consistency in arbuscular mycorrhizal trait-based research to improve predictions of function
Creators: name: Antunes, Pedro M.
name: Stürmer, Sidney L.
name: Bever, James D.
name: Chagnon, Pierre-Luc
name: Chaudhary, V. Bala
name: Deveautour, Coline
name: Fahey, Catherine
name: Kokkoris, Vasilis
name: Lekberg, Ylva
name: Powell, Jeff R.
name: Aguilar-Trigueros, Carlos A.
name: Zhang, Haiyang
Publisher: name: Freie Universität Berlin
Year: 2025
Subjects: subject: Symbiosis
subject: Trait-based ecology
subject: Ecosystem processes
subject: Standardization
subject: Functional diversity
subject: Environmental adaptation
classificationCode: 570
subject: Biowissenschaften; Biologie

description: Arbuscular mycorrhizal (AM) fungi (phylum Glomeromycota) are obligate symbionts with plants influencing plant health, soil a(biotic) processes, and ecosystem functioning. Despite advancements in molecular techniques, understanding the role of AM fungal communities on a(biotic) processes based on AM fungal taxonomy remains challenging. This review advocates for a standardized trait-based framework to elucidate the life-history traits of AM fungi, focusing on their roles in three dimensions: host plants, soil, and AM fungal ecology. We define morphological, physiological, and genetic key traits, explore their functional roles and propose methodologies for their consistent measurement, enabling cross-study comparisons towards improved predictability of ecological function. We aim for this review to lay the groundwork for establishing a baseline of AM fungal trait responses under varying environmental conditions. Furthermore, we emphasize the need to include underrepresented taxa in research and utilize advances in machine learning and microphotography for data standardization.
Efficacy of European Policies on Rural Landscape: the Case Study of Sardinia (ITALY)
Creators: name: Idda, Lorenzo
name: Madau, Fabio A.
name: Orru, Elia
name: Pulina, Pietro
name: Sini, Maria Paola
name: Idda, Lorenzo
name: Madau, Fabio A.
name: Orru, Elia
name: Pulina, Pietro
name: Sini, Maria Paola
Publisher: name: Unknown
Year: 2005
Subjects: subject: Agricultural and Food Policy
subject: rural landscape
subject: rural and environmental policies
subject: structural policies
subject: efficacy policies evaluation
subject: Sardinia

description: Over the last decades, a large number of developed countries have explicitly recognized the importance of benefits generated from agricultural and rural landscape into their legislation. Since the early '90, preservation and enhancing of rural landscape has played an increasing role also into the Common Agricultural Policy (CAP) promoted by the European Union (EU). More generally, the whole European rural development policy seems to recognize an important role to the keeping of agricultural and rural landscape. The present work is a part of a wider research aimed to identify rational instruments for guidance policies on rural landscape. The specific purpose of this paper is to evaluate efficacy of Sardinian (Italy) regional policies on rural landscape. In particular, the analysis aims to assess "functionality" of policies on rural landscape in programming policy. Results arisen from analysis of Rural Development of this first evaluation are controversial.
title: Rapid brain tumor classification from sparse epigenomic data
Creators: name: Brändl, Björn
name: Steiger, Mara
name: Kubelt, Carolin
name: Rohrandt, Christian
name: Zhu, Zhihan
name: Evers, Maximilian
name: Wang, Gaojianyong
name: Schuldt, Bernhard
name: Afflerbach, Ann-Kristin
name: Wong, Derek
Publisher: name: Freie Universität Berlin
Year: 2025
Subjects: subject: CNS cancer
subject: Computational models
subject: DNA sequencing
subject: Machine learning
classificationCode: 616
subject: Krankheiten

description: Although the intraoperative molecular diagnosis of the approximately 100 known brain tumor entities described to date has been a goal of neuropathology for the past decade, achieving this within a clinically relevant timeframe of under 1 h after biopsy collection remains elusive. Advances in third-generation sequencing have brought this goal closer, but established machine learning techniques rely on computationally intensive methods, making them impractical for live diagnostic workflows in clinical applications. Here we present MethyLYZR, a naive Bayesian framework enabling fully tractable, live classification of cancer epigenomes. For evaluation, we used nanopore sequencing to classify over 200 brain tumor samples, including 10 sequenced in a clinical setting next to the operating room, achieving highly accurate results within 15 min of sequencing. MethyLYZR can be run in parallel with an ongoing nanopore experiment with negligible computational overhead. Therefore, the only limiting factors for even faster time to results are DNA extraction time and the nanopore sequencer’s maximum parallel throughput. Although more evidence from prospective studies is needed, our study suggests the potential applicability of MethyLYZR for live molecular classification of nervous system malignancies using nanopore sequencing not only for the neurosurgical intraoperative use case but also for other oncologic indications and the classification of tumors from cell-free DNA in liquid biopsies.
The Galaxy Hosts and Large-Scale Environments of Short-Hard Gamma-Ray Bursts
Creators: name: Prochaska, J. X.
name: Bloom, J. S.
name: Chen, H. -W.
name: Foley, R. J.
name: Perley, D. A.
name: Ramirez-Ruiz, E.
name: Granot, J.
name: Lee, W. H.
name: Pooley, D.
name: Alatalo, K.
name: Hurley, K.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The rapid succession of discovery of short--duration hard--spectrum GRBs has led to unprecedented insights into the energetics of the explosion and nature of the progenitors. Yet short of the detection of a smoking gun, like a burst of coincident gravitational radiation or a Li-Paczynski mini-supernova, it is unlikely that a definitive claim can be made for the progenitors. As was the case with long--duration soft--spectrum GRBs, however, the expectation is that a systematic study of the hosts and the locations of short GRBs could begin to yield fundamental clues about their nature. We present the first aggregate study of the host galaxies of short--duration hard--spectrum GRBs. In particular, we present the Gemini--North and Keck discovery spectra of the galaxies that hosted three short GRBs and a moderate--resolution (R~6000) spectrum of a fourth host. We find that these short--hard GRBs originate in a variety of low-redshift (z<1) environments that differ substantially from those of long--soft GRBs, both on individual galaxy scales and on galaxy--cluster scales. Specifically, three of the bursts are found to be associated with old and massive galaxies with no current (< 0.1 Msol/hr) or recent star formation. Two of these galaxies are located within a cluster environment. These observations support an origin from the merger of compact stellar remnants, such as double neutron stars of a neutron star--black hole binary. The fourth event, in contrast, occurred within a dwarf galaxy with a star formation rate exceeding 0.5 Msol/yr. Therefore, it appears that like supernovae of Type Ia, the progenitors of short--hard bursts are created in all galaxy types, suggesting a corresponding class with a wide distribution of delay times between formation and explosion.
description: 8 pages, 2 figures. Accepted to ApJ
Policy Reform and Productivity Change in Chinese Agriculture: A Distance Function Approach
Creators: name: Brümmer, Bernhard
name: Glauben, Thomas
name: Lu, Wencong C.
name: Brümmer, Bernhard
name: Glauben, Thomas
name: Lu, Wencong C.
Publisher: name: Unknown
Year: 2002
Subjects: subject: Productivity Analysis
subject: Productivity growth
subject: China
subject: Policy reform
subject: Distance function

description: Agricultural policy reform has been an important source of change in the Chinese agricultural sector. The reforms led to productivity growth and helped China in pursuing its self-sufficiency goal especially in the grain sector. To analyse whether observable productivity growth stems from technologically induced components, or from the market induced parts, a multi-input-multi-output model is derived using an econometric distance function framework. A decomposition allows to distinguish allocative effects, scale effects, technological change, and technical efficiency change. Data on farms in Zhejiang from 1986 to 1999 are used to analyse the impact of policy reform.
Changes of Magnetism in a Magnetic Insulator due to Proximity to a Topological Insulator
Creators: name: Liu, Tao
name: Kally, James
name: Pillsbury, Timothy
name: Liu, Chuanpu
name: Chang, Houchen
name: Ding, Jinjun
name: Cheng, Yang
name: Hilse, Maria
name: Engel-Herbert, Roman
name: Richardella, Anthony
name: Samarth, Nitin
name: Wu, Mingzhong
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applied Physics (physics.app-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: This letter reports the modification of magnetism in a magnetic insulator Y3Fe5O12 thin film by topological surface states (TSS) in an adjacent topological insulator Bi2Se3 thin film. Ferromagnetic resonance measurements show that the TSS in Bi2Se3 produces a perpendicular magnetic anisotropy, results in a decrease in the gyromagnetic ratio, and enhances the damping in Y3Fe5O12. Such TSS-induced changes become more pronounced as the temperature decreases from 300 K to 50 K. These results suggest a completely new approach for control of magnetism in magnetic thin films.
Measurement of the LT-asymmetry in π^0 electroproduction at the energy of the Δ(1232) resonance
Creators: name: Elsner, D.
name: Süle, A.
name: Barneo, P.
name: Bartsch, P.
name: Baumann, D.
name: Bermuth, J.
name: Böhm, R.
name: Bosnar, D.
name: Ding, M.
name: Distler, M.
name: Drechsel, D.
name: Ewald, I.
name: Friedrich, J.
name: Friedrich, J. M.
name: Grözinger, S.
name: Jennewein, P.
name: Kamalov, S.
name: Klein, F. H.
name: Kohl, M.
name: Krygier, K. W.
name: Merkel, H.
name: Merle, P.
name: Müller, U.
name: Neuhausen, R.
name: Pospischil, Th.
name: Potokar, M.
name: Rosner, G.
name: Schmieden, H.
name: Strähle, M. Seimetz O.
name: Tiator, L.
name: Walcher, Th.
name: Weis, M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The reaction p(e,e'p)pi^0 has been studied at Q^2=0.2 (GeV/c)^2 in the region of W=1232 MeV. From measurements left and right of q, cross section asymmetries ρ_LT have been obtained in forward kinematics ρ_LT(θ_π^0=20deg) = (-11.68 +/- 2.36_stat +/- 2.36_sys)$ and backward kinematics ρ_LT(θ_π^0=160deg) =(12.18 +/- 0.27_stat +/- 0.82_sys). Multipole ratios \Re(S_1+^* M_1+)/|M_1+|^2 and \Re(S_0+^* M_1+)/|M_1+|^2 were determined in the framework of the MAID2003 model. The results are in agreement with older data. The unusally strong negative \Re(S_0+^* M_1+)/|M_1+|^2 required to bring also the result of Kalleicher et al. in accordance with the rest of the data is almost excluded.
description: 7 pages, 7 figures, 4 tables. Changed content. Accepted for publication in EPJA
Kinetics of segregation formation in elastic field of edge dislocation in bcc iron
Creators: name: Gusev, A. A.
name: Nazarov, A. V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We study the kinetics of the redistribution of impurity atoms in the elastic fields of dislocations by computer simulation methods. A work consists of several stages. The first is the simulation of a dislocation core structure with a Burgers vector along [100] direction by using the modified molecular static method. The second is obtaining the coefficients that determine the influence of the components of the strain tensor on the diagonal elements of the matrix of diffusion coefficients and in the equations for fluxes of carbon atoms in bcc iron. The third stage is associated with modeling the diffusion characteristics of carbon atoms by the method of molecular dynamics in a crystal without defects. The fourth and final stage uses the data about atomic structure that we obtained at first stage, as well as the characteristics calculated in the second and third, is a simulation of the formation of segregations of interstitial atoms, which is based on solving diffusion equations that take into account the elastic deformations created by the dislocation. The complex of developed models is used to analyze the kinetics of segregation formation. 3D graphs illustrate the distribution of interstitial atoms in the vicinity of a dislocation for different times at certain temperatures.
description: 7 pages, 2 figures
Adjustment of Conventional PSE's Methodology for Economy in Transition
Creators: name: Shick, Olga
name: Shick, Olga
Publisher: name: Unknown
Year: 2002
Subjects: subject: Political Economy
subject: PSE
subject: transition
subject: adjusted methodology
subject: Russia
subject: agriculture

description: The conventional PSE's methodology doesn't provide adequate estimation of agricultural support for the economy in transition. In this paper we attempt to adjust PSE's methodology for Russian economy, and also coefficients' analysis and interpretations are adapted for transitional conditions. Investigation showed that the level of agricultural support in Russia is much lower than conventional methodology estimates.
Introduction to PT-Symmetric Quantum Theory
Creators: name: Bender, Carl M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In most introductory courses on quantum mechanics one is taught that the Hamiltonian operator must be Hermitian in order that the energy levels be real and that the theory be unitary (probability conserving). To express the Hermiticity of a Hamiltonian, one writes $H=H^\dagger$, where the symbol $\dagger$ denotes the usual Dirac Hermitian conjugation; that is, transpose and complex conjugate. In the past few years it has been recognized that the requirement of Hermiticity, which is often stated as an axiom of quantum mechanics, may be replaced by the less mathematical and more physical requirement of space-time reflection symmetry (PT symmetry) without losing any of the essential physical features of quantum mechanics. Theories defined by non-Hermitian PT-symmetric Hamiltonians exhibit strange and unexpected properties at the classical as well as at the quantum level. This paper explains how the requirement of Hermiticity can be evaded and discusses the properties of some non-Hermitian PT-symmetric quantum theories.
Overview of Japan PID: landscape and future
Creators: name: Takeda, Hideaki
Publisher: name: Zenodo
Year: 2024
Subjects: Persistent Identifiers
PID Infrastructure
Open Science
Japan
APAC
Consortia
DataCite
ORCID
AXIES
JaLC
JST

description: This event had the theme ‘As local as necessary, as international as possible’. It focussed on strengthening the Japanese persistent identifier (PID) community and fostering linkages between Japan PID infrastructure and the wider community in the Asia–Pacific (APAC) region and globally.

The agenda provided an orientation of PIDs and related services, as well as insights about ORCID and DataCite in the APAC region and the activities of our Consortia. Participants learnt about use cases of PID implementation in research workflows in Japan (and APAC), and how implementation has aligned with organizational goals: showcasing success stories and challenges.

Bringing people together for stimulating conversations around points of interest to the community that are not possible virtually, the event was an opportunity to meet others with an interest in the adoption of PIDs and Open Science principles.

This event was co-hosted by ORCID and DataCite alongside the Academic eXchange for Information Environment and Strategy and the Japan Link Center, who respectively lead ORCID’s and DataCite’s Consortia in Japan. It was supported by the Japan Science and Technology Agency. The event was co-located with the International Symposium on Data Science 2023 held on 11–15 December 2023 at the Science Council of Japan in Tokyo.
Bulbophyllum imerinense , SCHLECHTER 2000
Creators: name: Bosser, Jean
Publisher: name: Zenodo
Year: 2000
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Asparagales
Orchidaceae
Bulbophyllum
Bulbophyllum imerinense

description: Bulbophyllum imerinense Schltr. Repert. Spec. Nov. Regni Veg., Beih. 33: 251 (1925); H. Perrier, Fl. Madag., 49 e fam., Orchidées I: 398 (1939); D. Du Puy et al., Orchids Madagascar: 75 (1999). — Type: Perrier de la Bâthie 14938, Madagascar, Mt. Vohitralongo, N Imerina, sep. 1922 (holo-, P!). Herbe épiphyte, à rhizomes épais de 3-4 mm. Pseudobulbes orangés sur le sec, diphylles, ovoïdes, anguleux, longs de 2-5,5 cm. Feuilles étroitement oblongues, 10-25 × 0,7-1 cm, à sommet obtus à arrondi. Inflorescences aussi longues que les feuilles, 20-30-flores. Racèmes longs de 5-10 cm. Bractées florales aussi longues que l'ovaire. Fleurs relativement petites. Sépales glabres, triangulaires-aigus, longs de 6-7 mm, 1-3-nerves, les 2 nervures latérales parfois peu nettes. Pétales triangulaires-obtus, 1-nerves, longs de 0,5 mm. Labelle long de 3,5-4 mm, épais, linguiforme, élargi et arrondi au sommet, base à 2 courtes carènes dressées, arrondies, avec entre elles une carène médiane peu élevée se prolongeant par une carène plus haute brusquement interrompue avant le sommet; 2 lignes latérales de poils blanchâtres, ramifiés, denses, longs de ± 1 mm; sous le sommet, une ligne transversale de poils simples ou peu ramifiés, plus épais. Colonne haute de 2,5-2,8 mm; stélidies aciculaires, courbées en crochet vers l'avant, aiguës au sommet, longues de 1,5-1,7 mm; dent des bords antérieurs de la colonne triangulaire, horizontale, longue de 0,5-0,6 mm. Anthère subcirculaire, de 0,5-0,6 mm de diamètre, arrondie vers l'avant, à connectif portant une petite excroissance conique, charnue. Espèce de la forêt humide des Hauts Plateaux, rare, connue seulement de deux stations, l'une près de Fianarantsoa, l'autre au nord de l'Imerina, caractérisée par ses petites fleurs à labelle linguiforme, sans appendices ligulés mobiles. MATÉRIEL ÉTUDIÉ. — MADAGASCAR: Bosser s.n., in Jard. Bot. Tananarive 857, station forestière d'Ampamaherana, Fianarantsoa (P!); Bosser s.n., in Jard. Bot. Tananarive 857b, sans doute même récolte que la précédente (P!); Perrier de la Bâthie 14938, Mt. Vohitralongo, N Imerina, sep. 1922, type (P!).
description: Published as part of Bosser, Jean, 2000, Contribution à l'étude des Orchidaceae de Madagascar et des Mascareignes. XXIX. Révision de la section Kainochilus du genre Bulbophyllum, pp. 167-182 in Adansonia (3) (3) 22 (2) on pages 169-170, DOI: 10.5281/zenodo.4605831
Learning models in the Umeek narratives : identifying an educational framework through storywork with First Nations elders
Creators: name: Atleo, Marlene R.
Publisher: name: University of British Columbia
Year: 2009

description: This study uses First Nations storywork to investigate indigenous learning. If cultural strategies were persistent and fundamental to the survival of a people, it would seem that understanding Nuu-chah-nulth learning orientations would provide emancipatory insight for First Nations learning in contemporary educational settings. Understanding what was and what is allows an envisioning of what could be. Therefore narratives about Umeek, the "community provider", the archetypal "go-getter", were read as a conceptual framework in which to identify learning orientations of Nuu-chah-nulth First Nations. The investigation had three foci. First, a protocol for First Nations cultural work was formulated and elaborated. This protocol was used as an overarching framework for the gathering of the stories, the interview process and the narrative analysis. Second, ethnographic and oral versions of Umeek narratives were gathered. Third, these narratives were read Nuu-chah-nulth elders cultural beliefs about learning for past and present success in a Nuu-chah-nulth life career (i.e. providing/achieving). Narrative deconstruction and metaphorical mapping served to identify and describe aspects of learning salient in the teachings of Umeek narratives. A full complex of learning archetypes emerged balancing innovation and conservation in an economy of change. Eight archetypal learning models were identified: the innovative transformational learner, the collaborative transformational learner, the directed lineage learner, the developmental learner, the cooperative learner, the resistant observational learner, the collaborative resistant learner, and the opportunistic observational learner. Themes which emerged central to Nuu-chah-nulth First Nations learning ideology and knowledge construction were: grandparents provided the foundation of learning, oosumch (ritual bathing) provided motivational management, partnerships permitted collaboration, ancestor names provided orientation and sacred sites provided frames for experiences. Nuu-chah-nulth learning theory was articulated in a storywork framework that provided insight into Nim-chah-nulth pedagogy: hence, it needs to be understood in the context of Nim-chah-nulth education. First Nations educational theory and learning models that are operating in communities need to be understood in the context of current education. Western schooling may not satisfy Nuuchah- nulth learning needs for transformation and strategic knowledge. Storywork is important in de-colonizing First Nations sensibilities in the process of self-determination in education, counseling, life career development, and healing.
Measuring the Effects of Alternative Support Policy Instruments on Beef Supply
Creators: name: Benjamin, Catherine
name: Piot-Lepetit, Isabelle
name: Benjamin, Catherine
name: Piot-Lepetit, Isabelle
Publisher: name: Unknown
Year: 2002
Subjects: subject: Agricultural and Food Policy
subject: beef supply
subject: dynamic modelling
subject: expectations
subject: direct payments
subject: Common Agricultural Policy

description: The European Union beef market regulation is largely influenced by the Common Agricultural Policy (CAP). With the 1992 CAP reform, there was a partial shift by the EU from product price support to a more direct form of income support by way of direct payments. For beef there was a move to direct payments on intermediate products which was essentially a direct payment for the possession of various categories of animals and these were linked to a land resource base. The Agenda 2000 reform consists in a further price decrease associated with an increase in direct payments. The objective of this paper is to assess how the behaviour of beef producers is sensitive to changes in production prices and to changes in premiums. The analysis relies on an analytical framework which allows to take into account the dynamic feature of beef production and the subsidies provided by the Common Agricultural Policy. We studys how the beef supply response is modified when various exogenous variables like prices or premiums are changed. The application focuses on the dynamics of beef supply response in the French beef sector.
title: Architecture of TOI-561 planetary system
Creators: name: Piotto, G.
name: Zingales, T.
name: Borsato, L.
name: Egger, J. A.
name: Correia, A. C. M.
name: Simon, A. E.
name: Florén, H.-G.
name: Sousa, S. G.
name: Maxted, P. F. L.
name: Rauer, Heike
Publisher: name: Freie Universität Berlin
Year: 2024
Subjects: subject: techniques: photometric
subject: techniques: radial velocities
subject: ephemerides
subject: planets and satellites: dynamical evolution and stability
subject: planets and satellites: fundamental parameters
subject: planets and satellites: interiors
classificationCode: 520
subject: Astronomie und zugeordnete Wissenschaften

description: We present new observations from CHEOPS (CHaracterising ExOPlanet Satellite) and TESS (Transiting Exoplanet Survey Satellite) to clarify the architecture of the planetary system hosted by the old Galactic thick disc star TOI-561. Our global analysis, which also includes previously published photometric and radial velocity data, incontrovertibly proves that TOI-561 is hosting at least four transiting planets with periods of 0.44 d (TOI-561 b), 10.8 d (TOI-561 c), 25.7 d (TOI-561 d), and 77.1 d (TOI-561 e) and a fifth non-transiting candidate, TOI-561f with a period of 433 d. The precise characterization of TOI-561's orbital architecture is interesting since old and metal-poor thick disc stars are less likely to host ultrashort-period super-Earths like TOI-561 b. The new period of planet -e is consistent with the value obtained using radial velocity alone and is now known to be 77.14399 +/- 0.00025 d, thanks to the new CHEOPS and TESS transits. The new data allowed us to improve its radius (R-p = 2.517 +/- 0.045 R-circle plus from 5 per cent to 2 per cent precision) and mass (M-p = 12.4 +/- 1.4 M-circle plus) estimates, implying a density of rho(p) = 0.778 +/- 0.097 R-circle plus. Thanks to recent TESS observations and the focused CHEOPS visit of the transit of TOI-561 e, a good candidate for exomoon searches, the planet's period is finally constrained, allowing us to predict transit times through 2030 with 20-min accuracy. We present an updated version of the internal structure of the four transiting planets. We finally performed a detailed stability analysis, which confirmed the long-term stability of the outer planet TOI-561 f.
Understanding the Institutional Evolution of the European Rural Policy: A Methodological Approach
Creators: name: Delgado, Maria Del Mar
name: Ramos, Eduardo
name: Delgado, Maria Del Mar
name: Ramos, Eduardo
Publisher: name: Unknown
Year: 2002
Subjects: subject: Agricultural and Food Policy
subject: Rural development
subject: policy analysis
subject: institutional processes

description: Last decades have seen the development of a new rural policy. Different problems occurring in rural areas have pushed the EU Commission to draft policy instruments aiming to address them. However this rural policy path has not always been explicit neither has followed a continuous trend but rather has seen a series of forward and backward steps. Given the lack of a method to establish the relevance and the level of political acceptance of EU rural policy, a methodology has been developed. This methodology has tried to identify the EU political procedure trend, though this is not a formal sequence, and to establish a classification of different events according to a proposed hierarchy. Several EU documents, decisions, directives and financial resource allocations have been analysed. Within the review performed, each rural policy milestone has been classified following the proposed hierarchical chart. This has enabled the drawing of the different backs and forwards taken by this process. Besides, it has lead to the interpretation of the rural policy instruments current position in relation with other European policy instruments.
Semi-inclusive radiative decays of Upsilon 1S
Creators: name: Tormo, Xavier Garcia i
name: Soto, Joan
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We discuss in detail the photon spectrum of radiative Upsilon 1S decays taking into account a number of results that have recently appeared in the literature. In particular, we show how to consistently combine expressions which are valid in the upper end-point region, where NRQCD factorization breaks down, with those of the central region, where NRQCD factorization holds. An excellent description of data is achieved, but theoretical errors are large.
description: 18 pages, 7 figures. Minor modifications. References added and corrected. Journal version
The Optimal Intertemporal Management of the Soil and Phosphorus and the Equilibrium in Economic and Biophysical Models
Creators: name: Goetz, Renan-Ulrich
name: Keusch, Alois
name: Goetz, Renan-Ulrich
name: Keusch, Alois
Publisher: name: Unknown
Year: 2002
Subjects: subject: Resource /Energy Economics and Policy
subject: Soil erosion
subject: Phosphorus runoffs
subject: Land-use tax
subject: Soil protection scores
subject: Dynamic optimization

description: The paper proposes the use of meta models to determine the optimal intertemporal management of soil and phosphorus losses from agricultural land. This approach allows finding a equilibrium of the economic and biophysical system simultaneously. In contrast to the existing literature the model takes account of nonlinear relationships and of a large number of agricultural activities. The mathematical problems arising from this complex setup are addressed and the model is solved numerically. The results show that the second best policy in form of soil protection scores is highly inefficient, while another second best policy in form of land-use taxes is nearly as efficient as the first best policy.
Revisiting the Israel junction conditions in Einstein-Cartan gravity
Creators: name: Khakshournia, S.
name: Mansouri, R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The Israel junction conditions of a thin shell in the context of Einstein-Cartan gravity are revisited. It is shown that with a choice of the torsion discontinuity taken to be orthogonal to the hypersurface and consistent with the antisymmetric properties of torsion tensor and contorsion tensor, the generalized asymmetric surface energy-momentum tensor turns out to be tangent to the hypersurface while the resulting generalized Israel junction conditions are modified. The main differences to previous works are mentioned.
description: 7 pages, to appear in IJMPD
4 Prosamanuskripte
Creators: name: Walser, Robert
Publisher: name: [s.n.]
Year: 0

description: 8. Bin ich anspruchsvoll; Druck: Festzug. Prosa aus der Bieler und Berner Zeit (Das Gesamtwerk, hrsg. von J. Greve, Bd. 7), Genf 1966, S. 158-162
9. Der Schurke Robert (Druck: a.O. S. 179-181)
10. Das Diner (Druck: a.O. S. 185-187)
11. Die märchenhafte Stadt (Druck: a.O. S. 210f.)
description: Öffentliche Bibliothek der Universität Basel
description: Deutsch
description: Digitalisierung=Digitization=Numérisation Februar 2022 TIFF
Two-Part Tariffs versus Linear Pricing Between Manufacturers and Retailers: Empirical Tests on Differentiated Products Markets
Creators: name: Bonnet, Céline
name: Dubois, Pierre
name: Simioni, Michel
name: Bonnet, Céline
name: Dubois, Pierre
name: Simioni, Michel
Publisher: name: Unknown
Year: 2006
Subjects: subject: Industrial Organization
subject: vertical contracts
subject: two part tariffs
subject: double marginalization
subject: collusion
subject: competition
subject: manufacturers
subject: retailers
subject: differentiated products
subject: water
subject: non nested tests

description: We present a methodology allowing to introduce manufacturers and retailers vertical contracting in their pricing strategies on a differentiated product market. We consider in particular two types of non linear pricing relationships, one where resale price maintenance is used with two part tariffs contracts and one where no resale price maintenance is allowed in two part tariffs contracts. Our contribution allows to recover price-cost margins from estimates of demand parameters both under linear pricing models and two part tariffs. The methodology allows then to test between different hypothesis on the contracting and pricing relationships between manufacturers and retailers in the supermarket industry using exogenous variables supposed to shift the marginal costs of production and distribution. We apply empirically this method to study the market for retailing bottled water in France. Our empirical evidence shows that manufacturers and retailers use non linear pricing contracts and in particular two part tariffs contracts with resale price maintenance. At last, thanks to the estimation of the our structural model, we present some simulations of counterfactual policy experiments like the change of pricing policies from two part tariffs to linear pricing between manufacturers and retailers, or the change of ownership of some products between manufacturers.
Non Timber Forest Products and Biodiversity Conservation - A Study of Tribals in a Protected Area in India
Creators: name: Ninan, K.N.
name: Ninan, K.N.
Publisher: name: Unknown
Year: 2006
Subjects: subject: Resource /Energy Economics and Policy
subject: Non Timber Forest Products
subject: Biodiversity Conservation
subject: Net Present Values
subject: External Costs
subject: Contingent Valuation Method

description: This study analyses the economics of Non Timber Forest Products (NTFPs) and the economic values appropriated by tribals in a protected area in India. Using primary data covering a cross section of tribals in the Nagarhole National Park (NNP), South India the stud y notes that the economic values appropriated by the tribals are quite high. Even after including external costs (i.e. wildlife damages costs and defensive expenditures to protect against wildlife attacks) the Net Present Value of NTFP benefits derived by the tribal households was over Rs 30,378 per household (at 12% discount rate for cash flows summed over 25 years). Interestingly when the external costs borne by third parties (i.e., coffee growers) are taken into account the net NTFP benefits turned negative. In other words, although from the NTFP extractors viewpoint NTFP extraction is a viable activity, from the society's viewpoint this is not so. The estimated net NTFP benefits from NNP after including the external costs borne by NTFP extractors was estimated at between USD 33.5 to 167.5 per ha per year using alternate assumptions regarding the park's catchment area. The tribals have a positive attitude towards biodiversity conservation. Asked to justify and rank the reasons why biodiversity needs to be conserved, the tribals emphasized its livelihood and ecosystem fun ctions. Using contingent valuation method, the study notes that those with income from coffee estates and forest employment, and those residing in the core zone of the national park are less willing to accept compensation and relocate outside the national park. The study suggests improving the incentive structure in order to obtain the support and participation of tribals in biodiversity conservation strategies.
Simulation of integrated photonic gates
Creators: name: Dragomir, Andrei-Emanuel
name: Ivan, Cristian George
name: Ionicioiu, Radu
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum technologies, such as quantum communication, sensing and imaging, need a platform which is flexible, miniaturizable and works at room temperature. Integrated photonics is a promising and fast-developing platform. This requires to develop the right tools to design and fabricate arbitrary photonic quantum devices. Here we present an algorithm which, starting from a $n$-mode transformation $U$, designs a photonic device implementing $U$. Using this method we design integrated photonic devices which implement quantum gates with high fidelity. Apart from quantum computation, future applications include the design of photonic subroutines or embedded quantum devices. These custom-designed photonic devices will implement in a single step a given algorithm and will be small, robust and fast compared to a fully-programmable processor.
Productivity, Geography, and the Export Decision of Chilean Farms
Creators: name: Echeverria, Rodrigo
name: Gopinath, Munisamy
name: Echeverria, Rodrigo
name: Gopinath, Munisamy
Publisher: name: Unknown
Year: 2006
Subjects: subject: Farm Management
subject: International Relations/Trade
subject: Agricultural Trade
subject: Chile
subject: Export Participation
subject: Geography
subject: Productivity.

description: This article analyzes the export participation of Chilean farms and the relative importance of farm-specific and geographic characteristics in this decision. An export behavior model is estimated using data on 8,284 Chilean farms and a two-stage conditional maximum likelihood procedure. Farm efficiency has a relatively stronger effect than the combined effect of geographic characteristics in increasing the probability of export participation. Farms with skilled (managerial) labor and in regions with higher human capital also have a relatively higher probability of producing for the export market. However, for geographic characteristics to positively affect export participation, farms must achieve a minimum level of efficiency.
New Quasi-Exactly Solvable Sextic Polynomial Potentials
Creators: name: Bender, Carl M.
name: Monou, Maria
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A Hamiltonian is said to be quasi-exactly solvable (QES) if some of the energy levels and the corresponding eigenfunctions can be calculated exactly and in closed form. An entirely new class of QES Hamiltonians having sextic polynomial potentials is constructed. These new Hamiltonians are different from the sextic QES Hamiltonians in the literature because their eigenfunctions obey PT-symmetric rather than Hermitian boundary conditions. These new Hamiltonians present a novel problem that is not encountered when the Hamiltonian is Hermitian: It is necessary to distinguish between the parametric region of unbroken PT symmetry, in which all of the eigenvalues are real, and the region of broken PT symmetry, in which some of the eigenvalues are complex. The precise location of the boundary between these two regions is determined numerically using extrapolation techniques and analytically using WKB analysis.