cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Hartle-Hawking boundary conditions as Nucleation by de Sitter Vacuum
Creators: name: Feleppa, F.
name: Licata, I.
name: Corda, C.
Publisher: name: arXiv
Year: 2019
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: It is shown that, for a de Sitter Universe, the Hartle-Hawking (HH) wave function can be obtained in a simple way starting from the Friedmann-Lemaitre-Robertson-Walker (FLRW) line element of cosmological equations. An oscillator having imaginary time is indeed derived starting from the Hamiltonian obtaining the HH condition. This proposes again some crucial matter on the meaning of complex time in cosmology. In order to overcome such difficulties, we propose an interpretation of the HH framework based on de Sitter Projective Holography.
description: 23 pages, 2 figures, accepted for publication in Physics of the Dark Universe
Rotating neutron stars with non-barotropic thermal profile
Creators: name: Camelio, Giovanni
name: Dietrich, Tim
name: Marques, Miguel
name: Rosswog, Stephan
Publisher: name: arXiv
Year: 2019
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Neutron stars provide an excellent laboratory for physics under the most extreme conditions. Up to now, models of axisymmetric, stationary, differentially rotating neutron stars were constructed under the strong assumption of barotropicity, where a one-to-one relation between all thermodynamic quantities exists. This implies that the specific angular momentum of a matter element depends only on its angular velocity. The physical conditions in the early stages of neutron stars, however, are determined by their violent birth processes, typically a supernova or in some cases the merger of two neutron stars, and detailed numerical models show that the resulting stars are by no means barotropic. Here, we construct models for stationary, differentially rotating, non-barotropic neutron stars, where the equation of state and the specific angular momentum depend on more than one independent variable. We show that the potential formulation of the relativistic Euler equation can be extended to the non-barotropic case, which, to the best of our knowledge, is a new result even for the Newtonian case. We implement the new method into the XNS code and construct equilibrium configurations for non-barotropic equations of state. We scrutinize the resulting configurations by evolving them dynamically with the numerical relativity code BAM, thereby demonstrating that the new method indeed produces stationary, differentially rotating, non-barotropic neutron star configurations.
description: 18 pages, 3 appendices, 2 tables, 9 figures. Accepted by PRD
Patellapis (Chaetalictus) pastiniformis
Creators: name: Timmermann, Kim
name: Kuhlmann, Michael
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Halictidae
Patellapis
Patellapis pastiniformis

description: Patellapis (Chaetalictus) pastiniformis (Cockerell 1939)
 Halictus pastiniformis Cockerell, 1939e: 510–511.
(Figs. 77a–d)
 Diagnosis. The female of P. pastiniformis is similar to those of P. pondoensis, P. pastinella and P. disposita. They can be distinguished from P. pondoensis by having a shorter body length and from P. pastinella by having a finely serrate inner hind tibial spur. The female of P. disposita is characterised by the oily bluish shine on the scutum, that is missing in P. pastiniformis. P. pearstonensis, P. chubbi and P. cinctifera differ from P. pastiniformis in having reddish metasomal terga.
 Description
 Female. Bl = 5,7mm. Head. L = 1,6mm; W = 1,7mm. Head as long as wide (Fig. 77a). Integument black except clypeus and mandibles partly blackish-brown. Face predominantly shiny and with loose, greyish, erect hairs. Mandibles bidentate. Clypeus and supraclypeal area convex in profile. Clypeus strongly and predominantly densely punctate; surface shiny. Clypeoantennal distance 0,2mm. Supraclypeal area with a few small punctures; punctures well separated; surface completely reticulate. Paraocular area moderately strongly and densely punctate; surface predominantly and strongly sculptured; rather dull. Antennae brownish-black. Mesosoma. L = 1,1mm; W (ITS) = 1,2mm. Integument black. Scutum shiny; surface completely reticulate; disc finely and moderately densely punctate (i = 1,5d) (Fig. 77b). Scutellum as illustrated in Fig. 77c. Scutum, scutellum, metanotum, mesepisternum and propodeum with greyish, erect hairs. Basal area of propodeum as illustrated in Fig. 77c; propodeum shiny, with minute well separated punctures; surface completely reticulate. Marginal region of posterior truncation shiny; completely reticulate. Wings. Slightly fuscouse. Legs. Integument brownish-black. Vestiture greyish to brownish. Ts finely serrate, with 5 to 6 small, oblique projections (Fig. 77d). Bp slender; angulate apically. Metasoma. L = 3,4mm; W = 1,8mm. Integument blackish-brown except the margins of T pallid brownish and partly translucent. No apical hair bands on T1–T4. Prepygidial fimbria yellowish-brown.
 Male. Unknown.
 Type material (1 specimen). Holotype, female, S. Africa. Natal, Weenen. ii.1925, H.P. Thomasset (white label), Type (red-white label), Halictus pastiniformis Ckll Type (handwritten white label), B.M. TYPE HYM. 17a.856 (white label), Pres.By Imp.Inst.Ent.B.M. 1929–407 (white label), BMNH.
 Distribution (Fig. 80). Only known from Weenen, KwaZulu–Natal.
 Floral visitation. Unknown.
 Seasonal activity (first–last observations). ii.
description: Published as part of Timmermann, Kim & Kuhlmann, Michael, 2009, Variable Selection and Inference for Multi-period Forecasting Problems, pp. 1-188 in Zootaxa 2099 on pages 113-114, DOI: 10.17863/cam.5647, http://zenodo.org/record/5311462
Diffractive Vector Meson Production in k_t-Factorization Approach
Creators: name: Ivanov, I. P.
name: Nikolaev, N. N.
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We describe the current status of the diffractive vector meson production calculations within the k_t-factorization approach. Since the amplitude of the vector meson production off a proton is expressed via the differential gluon structure function (DGSF), we take a closer look at the latter and present results of our new improved determination of the DGSF from the structure function F_2p. Having determined the differential glue, we proceed to the k_t-factorization results for the production of various vector mesons. We argue that the properties of the vector meson production can reveal the internal spin-angular and radial structure of the vector meson.
description: 5 pages, 2 eps figures, talk given at X International Workshop on Deep Inelastic Scattering (DIS2002) Cracow, Poland, 30 April - 4 May 2002
Evaluating the Economic Impacts of Accelerated R&D
Creators: name: Lindner, Robert K.
name: Lindner, Robert K.
Publisher: name: Unknown
Year: 2006
Subjects: Research and Development/Tech Change/Emerging Technologies

description: A key part of any economic impact assessment study is the specification of a counterfactual scenario. Sometimes, the most likely counterfactual for a research project is that the same, or equivalent research, would be carried out by someone else, albeit at a later date. Alternatively, the research impacts might simply “spill-in” without any further research, and at little or no cost. Either way, the material impact of the research being evaluated is simply to bring forward in time realisation of the consequential economic benefits. However, which of the above two alternative scenarios is applicable does have important implications for the treatment of costs in the counterfactual scenario. An economic impact assessment study of an ACIAR funded project on the development and uptake of a mud crab hatchery innovation in Vietnam is used to illustrate some of the issues involved.
MixNMatch: Multifactor Disentanglement and Encoding for Conditional Image Generation
Creators: name: Li, Yuheng
name: Singh, Krishna Kumar
name: Ojha, Utkarsh
name: Lee, Yong Jae
Publisher: name: arXiv
Year: 2019
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Graphics (cs.GR)
subject: Machine Learning (cs.LG)
subject: Image and Video Processing (eess.IV)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: We present MixNMatch, a conditional generative model that learns to disentangle and encode background, object pose, shape, and texture from real images with minimal supervision, for mix-and-match image generation. We build upon FineGAN, an unconditional generative model, to learn the desired disentanglement and image generator, and leverage adversarial joint image-code distribution matching to learn the latent factor encoders. MixNMatch requires bounding boxes during training to model background, but requires no other supervision. Through extensive experiments, we demonstrate MixNMatch's ability to accurately disentangle, encode, and combine multiple factors for mix-and-match image generation, including sketch2color, cartoon2img, and img2gif applications. Our code/models/demo can be found at https://github.com/Yuheng-Li/MixNMatch
description: CVPR 2020 camera ready
Some questions concerning Bose-Einstein correlations in multiple particle production processes
Creators: name: Zalewski, K.
Publisher: name: arXiv
Year: 2001
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Most models of Bose-Einstein correlations in multiple particle production processes can be ascribed to one of the following three broad classes: models based on the original idea of the Goldhabers, Lee nad Pais, hydrodynamic models and string models. We present for discussion some basic questions concerning each of these classes of models.
description: Talk at the 41-st Cracow Summer School of Theoretical Physics, Zakopane, June 2001. Latex2e, 8 pages, no figures
Adoption of new tobacco varieties in Greece: Impacts of empirical findings on policy design
Creators: name: Dimara, Efthalia
name: Skuras, Dimitrios
name: Dimara, Efthalia
name: Skuras, Dimitrios
Publisher: name: Unknown
Year: 1998
Subjects: Crop Production/Industries
Production Economics

description: Greece is a major international tobacco producer. Flue-cured tobacco varieties constituted the major alternative crop to Greek farmers growing certain oriental tobacco varieties. Diffusion of flue-cured tobacco was rapid due to its high yields and the depressed market for certain oriental tobacco varieties. Currently, the common organisation of the tobacco market is undergoing substantial changes, and the farmers' response will be a vital factor of success. A portfolio selection model reveals that the major factors influencing the adoption decision of tobacco growers are the size of the farm measured in annual work units, the farm's proximity to urban centres, the farm's diversification and the farmer's age. The number of contacts with institutions is, surprisingly, inversely related to adoption. Future tobacco policies impinging on factors influencing decisions to adopt new varieties or production practices may be more cost-effective. © 1998 Elsevier Science B.V. All rights reserved.
Ground state energy in a wormhole space-time
Creators: name: Khusnutdinov, Nail R.
name: Sushkov, Sergey V.
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The ground state energy of the massive scalar field with non-conformal coupling $ξ$ on the short-throat flat-space wormhole background is calculated by using zeta renormalization approach. We discuss the renormalization and relevant heat kernel coefficients in detail. We show that the stable configuration of wormholes can exist for $ξ> 0.123$. In particular case of massive conformal scalar field with $ξ=1/6$, the radius of throat of stable wormhole $a\approx 0.16/m$. The self-consistent wormhole has radius of throat $a\approx 0.0141 l_p $ and mass of scalar boson $m\approx 11.35 m_p$ ($l_p$ and $m_p$ are the Planck length and mass, respectively).
description: revtex, 18 pages, 3 eps figures. accepted in Phys.Rev.D
Rhythms and Routines: sounding order in a local men’s prison through aural ethnography
Creators: name: Herrity, Katherine Zoe
Publisher: name: University of Leicester
Year: 2019
Subjects: subject: Sociology
subject: FOS: Sociology

description: The prison soundscape is characterised by bangs, clangs, jangles and shouts reverberating around the stark environment (Hassine 1996). Wener (2012) argues the impact of these noises is enhanced by their inescapability, but what significance this has for the relationships and wellbeing of those who live and work in these spaces, has been historically ignored. This thesis, the first to focus specifically on sound in prison, answers these questions, and that of how tackling the neglect of aural experience in prisons literature might form a better understanding of prison social life. To answer this a novel method of research, Aural Ethnography (ethnography privileging aural experience), was developed and utilised to study a local men’s prison in England. Thorough immersion into the prison’s soundscape, over an extended period, allowed for an understanding of how these inescapable sounds shaped the everyday life of the prison. Using sound as a theoretical framework to explore prison life resulted in original insights and novel contributions to the prison literature on power, emotion, space, time, and order. The potency of prison spaces reverberated in the soundscape beyond the bounds of immediate interaction, amplifying the impact of jangling keys and clanging gates. This partially disentangles power from the rhythms and routines that comprise the order of a predictably structured day. At HMP Midtown, the soundscape functioned as a site for both gauging and affecting the emotional climate of prison spaces. A steady day – maintained through a delicate and ongoing community effort (Sparks et al 1996) – was a source of reassurance and security. It was the ontological security offered by a predictably ordered regime which provided much of the impetus for cooperating and contributing to the steady rhythms of the everyday. Sound amplified the strategies employed to navigate the prison environment, and the desire to emerge unscathed.
Orientation of Entrance and Burial Chamber in the Pyramids of the Egyptian Fourth and Fifth Dynasties
Creators: name: Sparavigna, Amelia Carolina
Publisher: name: Zenodo
Year: 2025
Subjects: Pyramids
Egypt
Old Kingdom
Fourthe Dynasty
Mastabat Fara'un
Akhet Khufu

description: In a recent work, arxiv:2412.20407, we have mentioned two Egyptian kings, Shepseskaf and Userkaf,  of the IV and V Dynasties. Here we continue discussing their burial places, that is their pyramids, in  a new framework based on the study of orientation of pyramid substructures (entrances, corridors, burial chambers). Shepseskaf and Userkaf opted for the same architectonic solutions, exhibiting a continuity in funerary architecture. After showing the substructure orientations of the pyramids of the IV and V Dynasties, we will stress that the substructure in the Shepseskaf's pyramid, the Mastabat Fara'un, is oriented as in the Fourth Dynasty architecture of pyramids and that it has a layout which is closer to that used by the following Fifth Dynasty. In our discussion, we will start with the first ruler of the Fourth Dynasty, Snefru, who introduced a new form of external and internal layout of the burial complexes of the king, through an evolution based on four attempts, the Seila, Meidum, Bent and Red pyramids. In the final model, the Snefru's Red pyramid, the substructure has a north entrance and a burial chamber east-west oriented. This orientation persisted in the pyramids of the Fourth and Fifth Dynasties, and beyond. The Sekhemkhet (Djoserty) pyramid of the Third Dynasty is also  illustrated for comparison, such as some earlier burial monuments. In the discussion here proposed the position of sarcophagus and of the body inside it is also investigated. The sarcophagus has its axis north-south. The body of the deceased king was lying on its left side, extended, head to the north, face towards the east. In this framework, we propose again what we told in arXiv 2016, arxiv:1604.05963, and the layout of pyramids with respect to sunrise on solstices.
Orientation of Entrance and Burial Chamber in the Pyramids of the Fourth Dynasty
Creators: name: Sparavigna, Amelia Carolina
Publisher: name: Zenodo
Year: 2025
Subjects: Pyramids
Egypt
Old Kingdom
Fourthe Dynasty
Mastabat Fara'un
Akhet Khufu

description: The Fourth Dynasty of the Egyptian Old Kingdom started with Snefru. The second pharaoh is Cheops, the one of the Great Pyramid of Giza. Then they follow Djedefre, Khafre, Bicheris, Menkaure, Shepseskaf and (perhaps) Djedefptah. Of the kings of the IV Dynasty here we consider the pyramids, to investigate the orientation of their entrances and burial chambers. If possible, the orientation of the sarcophagus is mentioned. The four pyramids built by Snefru show the evolution to the final model with a north entrance and a burial chamber east-west oriented.
La festa di San Giovanni: costruzione di un’identità civica fra rituale e spettacolo (secoli XIV-XVI)
Creators: name: Ventrone, Paola
Publisher: name: Annali di Storia di Firenze
Year: 2011

description: Nell’Italia pre-moderna le feste di identità civica si distinguevano da tutte le altre celebrazioni collettive in quanto avevano la funzione di disegnare l’immagine della città, delle sue istituzioni, della sua composizione sociale e della sua ricchezza. Dotate di caratteristiche che ne sancivano l’eccellenza rispetto alle altre occasioni cerimoniali, esse mutavano nel tempo registrando i mutamenti politico-istituzionali delle città-stato. Questo contributo analizza la vicenda storica delle feste patronali di San Giovanni a partire dalle notizie più antiche sulla loro istituzione in età comunale fino alle trasformazioni introdotte dal regime principesco nel XVI secolo. La cospicua e continuativa documentazione superstite, e soprattutto le dettagliate descrizioni che punteggiano la storia della festa segnalando le congiunture dei cambiamenti più significativi, consente di ricostruire le varie tappe della sua istituzione e degli spettacoli in essa inseriti, leggendovi di volta in volta la simbolo- gia politica sottesa. Se in età repubblicana le confraternite rappresentarono su carri la storia della redenzione umana dalla creazione al giudizio universale, enfatizzando così un’immagine di Firenze profondamente devota e unita sotto la protezione del Patrono, negli ultimi anni di egemonia del Magnifico vennero introdotti anche trionfi all’antica in esplicita lode del ‘signore’, mentre con l’avvento del principato Cosimo I cambiò radicalmente il significato civico della festa trasformandola da offerta della città a San Giovanni in “omaggio” dei sudditi al sovrano.
description: Annali di Storia di Firenze, Vol. 2 (2007)
Universality of the Electronic Structure from a Half Filled CuO_2 Plane
Creators: name: Ronning, F.
name: Kim, C.
name: Shen, K. M.
name: Armitage, N. P.
name: Damascelli, A.
name: Lu, D. H.
name: Feng, D. L.
name: Shen, Z. -X.
name: Miller, L. L.
name: Kim, Y. -J.
name: Chou, F.
name: Terasaki, I.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present angle resolved photoemission (ARPES) data from insulating A_2CuO_2X_2 (A=Sr, Ca; X=Cl, Br), Sr_2Cu_3O_4Cl_2, and Bi_2Sr_2MCu_2O_8 (M=Er, Dy) single crystals which illustrate that the low energy electronic structure of the half-filled cuprates are independent of the apical atom. By performing a photon energy dependent study on Ca_2CuO_2Cl_2 we are able to distinguish between features which are intrinsic and those which are a result of the photoemission matrix elements. We find that the dispersion is independent of photon energy, while an asymmetry in the electron occupation probability across the antiferromagnetic zone boundary is robust to variations in photon energy. Finally, we show that the d-wave-like dispersion which exists in the insulator along the antiferromagnetic zone boundary does not precisely fit the simple d-wave functional form near the nodal direction.
description: 15 pages, 18 figures; A high quality pdf is available at http://helios.physics.utoronto.ca/~fronning/RonningInsResub.pdf (2.8MB)
Trends in China's regional grain production and their implications
Creators: name: Yang, Hong
name: Yang, Hong
Publisher: name: Unknown
Year: 1998
Subjects: Crop Production/Industries
Production Economics

description: The paper examines the growth of China's regional grain production during the reform period. Impacts of regional trends on China's interregional grain transfers and international trade are tackled. It finds that there are significant variations between regions in terms of magnitudes and patterns of growth. Northern regions experienced a faster growth than southern regions. There is a tendency to shift grain production centres towards north, leading to a modification of crop composition in total national output, a reversal of the prevailing direction of interregional transfers and a change in contents of grain flows. The study argues that this shift is an inevitable result of the uneven progress of reforms and economic development and, consequently, the varying opportunity costs of grain production in different regions. The analysis suggests that for China as a whole, further growth of grain output has been impeded by the lack of new technologies and increasingly high opportunity costs of grain production. In the northeast region where the potential for increasing maize output is relatively high, production has been constrained by the shortage of transport and storage facilities as well as policy obstacles. The study concludes that there is a necessity for China to decentralize its grain international trade. In doing so, the imports of grain in the south will increase, and so will the exports of maize in the north. © 1998 Elsevier Science B.V. All rights reserved.
The power-law and the logarithmic potentials
Creators: name: Ciftci, Hakan
name: Ateser, Engin
name: Koru, Hueyin
Publisher: name: arXiv
Year: 2002
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: In this study, we show that the energy eigenvalues and the eigenfunctions of the Schrodinger equation for the power-law and the logarithmic potential can be easily obtained by using variation technique for special type wave functions. The results are in very good agreement with exact numerical results.
description: 13 pages, 5 figures
Phenomenology of heterotic M-theory with five-branes
Creators: name: Cerdeno, D. G.
name: Munoz, C.
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We analyze some phenomenological implications of heterotic M-theory with five-branes. Recent results for the effective 4-dimensional action are used to perform a systematic analysis of the parameter space, finding the restrictions that result from requiring the volume of the Calabi-Yau to remain positive. Then the different scales of the theory, namely, the 11-dimensional Planck mass, the compactification scale and the orbifold scale, are evaluated. The expressions for the soft supersymmetry-breaking terms are computed and discussed in detail for the whole parameter space. With this information we study the theoretical predictions for the supersymmetric contribution to the muon anomalous magnetic moment, using the recent experimental result as a constraint on the parameter space. We finally analyze the neutralino as a dark matter candidate in this construction. In particular, the neutralino-nucleon cross-section is computed and compared with the sensitivities explored by present dark matter detectors.
description: Final version to appear in Phys. Rev. D. Some comments and references added. 37 pages, 19 figures
National agricultural commodity research priorities for Pakistan
Creators: name: Nagy, Joseph G.
name: Quddus, M.A.
name: Nagy, Joseph G.
name: Quddus, M.A.
Publisher: name: Unknown
Year: 1998
Subjects: Production Economics
Research and Development/Tech Change/Emerging Technologies

description: A future agricultural research agenda for Pakistan and its provinces was developed as part of the national master agricultural research plan (NMARP) under the Government of Pakistan, World Bank agricultural research project II (ARP-II). The current research agenda mainly keeps pace with maintenance research and little contribution is being made to increase the productivity above maintenance levels for most crop and livestock commodities. Thus, the present Pakistan agricultural research system cannot contribute in any substantial or efficient way to the narrowing of Pakistan's projected food deficit anticipated in the next 15 years. A major thrust of the ARP-II project was identifying a new research agenda with agricultural research priority setting as the basis. An ex ante economic surplus priority setting analysis at the national level was undertaken for selected agricultural commodities as part of the priority setting process. Three separate research funding scenarios were analyzed: (1) Scenario 1: an ex ante analysis using the present research commodity funding levels and present research management level for each year over the next five years, (2) Scenario II: an ex ante analysis using double the present funding level for each year over the next 5 years with a higher research management level than at present, and (3) Scenario III: an ex ante analysis at an 'optimally' funded level with a higher research management level. An efficiency index (NPV divided by the present value of research expenditure) was used for the priority ranking of commodities. A framework for using the information generated by the ex ante economic surplus method is presented. The results of the analysis proved to be useful as baseline information for researchers and research managers to assess the overall budget commitment required for agricultural research in Pakistan and for identifying an overall research strategy at the national level. © 1998 Elsevier Science B.V. All rights reserved.
Experimental Determination of Proton Hardness Factors at Several Irradiation Facilities
Creators: name: Allport, P.
name: Bogelspacher, F.
name: Bruce, K.
name: Canavan, R.
name: Dierlamm, A.
name: Gonella, L.
name: Knights, P.
name: Mateu, I.
name: Moll, M.
name: Nikolopoulos, K.
name: Phoenix, B.
name: Price, T.
name: Ram, L.
name: Ravotti, F.
name: Simpson-Allsop, C.
name: Wood, C.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The scheduled High Luminosity upgrade of the CERN Large Hadron Collider presents new challenges in terms of radiation hardness. As a consequence, campaigns to qualify the radiation hardness of detector sensors and components are undertaken worldwide. The effects of irradiation with beams of different particle species and energy, aiming to assess displacement damage in semiconductor devices, are communicated in terms of the equivalent 1 MeV neutron fluence, using the hardness factor for the conversion. In this work, the hardness factors for protons at three different kinetic energies have been measured by analysing the I-V and C-V characteristics of reverse biased diodes, pre- and post-irradiation. The sensors were irradiated at the MC40 Cyclotron of the University of Birmingham, the cyclotron at the Karlsruhe Institute of Technology, and the IRRAD proton facility at CERN, with the respective measured proton hardness factors being: 2.1 +/- 0.5 for 24 MeV, 2.2 +/- 0.4 for 23 MeV, and 0.62 +/- 0.04 for 23 GeV. The hardness factors currently used in these three facilities are in agreement with the presented measurements.
description: 13 pages, 12 figures
Technical efficiency and productivity of maize producers in eastern Ethiopia: a study of farmers within and outside the Sasakawa-Global 2000 project
Creators: name: Seyoum, E.T.
name: Battese, George E.
name: Fleming, E.M.
name: Seyoum, E.T.
name: Battese, George E.
name: Fleming, E.M.
Publisher: name: Unknown
Year: 1998
Subjects: Production Economics
Productivity Analysis

description: This paper investigates the technical efficiency of two samples of maize producers in eastern Ethiopia, one involving farmers within the Sasakawa-Global 2000 project and the other involving farmers outside this program. The study uses stochastic frontier production functions in which the technical inefficiency effects are assumed to be functions of the age and education of the farmers, together with the time spent by extension advisers in assisting farmers in their agricultural production operations. For the cross-sectional data obtained for the 1995/96 agricultural year, Cobb-Douglas stochastic frontiers are found to be adequate representations of the data, given the specifications of the translog stochastic frontiers for farmers within and outside the project. The empirical results indicate that farmers within the SG 2000 project are more technically efficient than farmers outside the project, relative to their respective technologies. The mean frontier output of maize for farmers within the SG 2000 project is significantly greater than that for the farmers outside the project. © 1998 Elsevier Science B.V. All rights reserved.
N=1 supersymmetric sigma model with boundaries, II
Creators: name: Albertsson, Cecilia
name: Lindstrom, Ulf
name: Zabzine, Maxim
Publisher: name: arXiv
Year: 2002
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We consider the N=1 supersymmetric two-dimensional non-linear sigma model with boundaries and nonzero B-field. By analysing the appropriate currents we describe the full set of boundary conditions compatible with N=1 superconformal symmetry. Using this result the problem of finding a correct action is discussed. We interpret the supersymmetric boundary conditions as a maximal integral submanifold of the target space manifold, and speculate about a new geometrical structure, the deformation of an almost product structure.
description: LaTeX, 24 pages. v2: Comments on torsion conditions changed. v3: Typos corrected, note added, published version
Non-integrability on AdS$_3$ supergravity backgrounds
Creators: name: Filippas, Kostas
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences
subject: 37J30

description: We investigate classical integrability on two recently discovered classes of backgrounds in massive IIA supergravity. These vacua are of the form AdS$_3\times\,$S$^2\times\mathbb{R}\times\,$CY$_2$, they preserve small $\mathcal{N}=(0,4)$ supersymmetry and are associated with D8$-$D6$-$D4$-$D2 Hanany-Witten brane set-ups. We choose an appropriate string embedding and use differential Galois theory on its associated Hamiltonian system, intending to produce the conditions under which Liouvillian solutions may occur. By constraining the parameters of the system according to the consistency of the associate brane set-ups we prove that no such conditions exist, yielding the complete non-integrability of these vacua. That is, up to the trivial cases where the background reduces to the Abelian and non-Abelian T-dual of AdS$_3\times\,$S$^3\times\,$T$^4$.
description: 22 pages plus appendices. Added references, corrected typos, corrected/added comments, improved title
Price supply response of vegetable growers in the Sultanate of Oman
Creators: name: Omezzine, Abdallah
name: Al-Jabri, Omar S.
name: Omezzine, Abdallah
name: Al-Jabri, Omar S.
Publisher: name: Unknown
Year: 1998
Subjects: Crop Production/Industries
Production Economics

description: Information on supply price elasticities has been acknowledged as being very important for decision makers at the macro and micro levels. This paper presents an empirical investigation of vegetable growers' responses to prices in Oman. It develops a single supply response function incorporating adaptive expectation model for prices. Results indicate that growers adjust relatively fast to changes in expected prices. However, these adjustments are rather low for some crop in the short- and longrun. Growers' production decisions have also shown a significant response to prices of other products competing for farm space and other production resources. These results will support efforts aimed at market development and crop enhancement programs. © 1998 Elsevier Science B.V. All rights reserved.
Neoperla undetermined
Creators: name: Stark, Bill P.
name: Sivec, Ignac
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Plecoptera
Perlidae
Neoperla
Neoperla undetermined

description: Neoperla sp. Id-D (Figs. 31-32, 37-42) Material examined. INDIA: Karnataka, Agumbe Ghats, 13° 29.386'N, 75° 04.537'E, 9 October 2004, G. Svenson, 1♀ (BYUC). Adult habitus. General color yellow-brown. Head yellow-brown with dark spot connecting ocelli and an obscure dusky brown area over tentorial calluses (Fig. 31); anteromedian area of frons and lappets darker brown; antennal bases pale brown. Pronotum pale brown with darker rugosities. Legs pale, slightly darker on upper tibiae. Wings transparent, veins pale brown except C and Sc pale. Male. Unknown. Female. Forewing length 11.5 mm. Subgenital plate undeveloped. Vagina membranous, but with a pair of thick parenthesis-shaped areas surrounding base of seminal receptacle duct (Fig. 32). Receptacular duct long and coiled twice around dorsal vaginal surface and base of membranous, sausage-shaped, coiled seminal receptacle. Receptacular duct lined full length with brown scales but in apical third scales restricted to median section of tube, not reaching lateral margins; in basal half, scales occur along outer margin, not extending to inner margin. Egg. Outline jar-shaped with broad, short lid and narrow, sessile collar (Fig. 37). Length ca. 298 μm, equatorial width ca. 188 μm. Collar defined by a smooth ring ca. 18 μm wide; collar diameter ca. 69- 77 μm (Figs. 38-39). Egg surface consists of ca. 25, gently sinuate, smooth, wide striae; striae width near equatorial zone, ca. 15-16 μm; sulci very narrow. Lid short and bearing obscure follicle cell impressions with smooth, apparently impunctate floors (Fig. 40). Eclosion line absent; micropyles located subequatorially near lid but slightly beyond a zone with irregularly notched striae (Fig. 40); micropylar orifices slanted and set on elongate ridges (Figs. 41-42). Larva. Unknown. Comments. The egg of this species is similar to, and perhaps indistinguishable from that of N. biseriata, and the specimen was collected with a series of males determined as that species (see above). Because the receptacular duct of this female appears longer than in N. biseriata (Zwick et al. 2007), we are treating it as a possible separate species.
description: Published as part of Stark, Bill P. & Sivec, Ignac, 2015, New Species And Records Of Neoperla (Plecoptera: Perlidae) From India, pp. 75-91 in Illiesia 11 (7) on pages 88-90, DOI: 10.5281/zenodo.4760954
description: {"references": ["Zwick, P., S. Anbalagan, & S. Dinakaran. 2007. Neoperla biseriata sp. n., a new stonefly from Tamil Nadu, India (Plecoptera: Perlidae). Aquatic Insects, 29: 241 - 245."]}
Balance Functions, Correlations, Charge Fluctuations and Interferometry
Creators: name: Jeon, Sangyong
name: Pratt, Scott
Publisher: name: arXiv
Year: 2001
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Connections between charge balance functions, charge fluctuations and correlations are presented. It is shown that charge fluctuations can be directly expressed in terms of a balance functions under certain assumptions. The distortion of charge balance functions due to experimental acceptance is discussed and the effects of identical boson interference is illustrated with a simple model.
description: 1 eps figure included. 5 pages in revtex4
Modelling the role of length scales in the indentation testing of metals
Creators: name: CHRISTOPHER J. CAMPBELL
Publisher: name: University of Leicester
Year: 2019
Subjects: Uncategorized

description: The strength of materials is related to their intrinsic (microstructural) length scale. Small scale testing also introduces an extrinsic length scale effect, such as the widely reported indentation size effect (ISE). These length scale effects have been studied and modelled both analytically and numerically.Finite element models have been developed in COMSOL and Abaqus to incorporate the ISE into hardness models for different indenter profiles and validated against fundamental theories.A novel analytical model has been developed for the ISE in a flat punch indenter under plain strain conditions and validated using experimental data and numerical models developed in this thesis. It was found from the loading and unloading curves generated by this model that the hardness depends on two length scales, the punch width and the indentation depth.A strain gradient crystal plasticity model has been developed in Abaqus using a User Material (UMAT) routine to investigate the ISE for different crystal structures. Spherical and conical hardness simulations were performed for materials with different intrinsic length scales.An analytical model has been developed as an extension of the Nix and Gao [1] to consider the hardness in polycrystalline alloys. This model has been validated against existing experimental data and used to analyse a bespoke series of experimental hardness tests provided for this project by UKAEA.
Covariance Matrix Adaptation for the Rapid Illumination of Behavior Space
Creators: name: Fontaine, Matthew C.
name: Togelius, Julian
name: Nikolaidis, Stefanos
name: Hoover, Amy K.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: We focus on the challenge of finding a diverse collection of quality solutions on complex continuous domains. While quality diver-sity (QD) algorithms like Novelty Search with Local Competition (NSLC) and MAP-Elites are designed to generate a diverse range of solutions, these algorithms require a large number of evaluations for exploration of continuous spaces. Meanwhile, variants of the Covariance Matrix Adaptation Evolution Strategy (CMA-ES) are among the best-performing derivative-free optimizers in single-objective continuous domains. This paper proposes a new QD algorithm called Covariance Matrix Adaptation MAP-Elites (CMA-ME). Our new algorithm combines the self-adaptation techniques of CMA-ES with archiving and mapping techniques for maintaining diversity in QD. Results from experiments based on standard continuous optimization benchmarks show that CMA-ME finds better-quality solutions than MAP-Elites; similarly, results on the strategic game Hearthstone show that CMA-ME finds both a higher overall quality and broader diversity of strategies than both CMA-ES and MAP-Elites. Overall, CMA-ME more than doubles the performance of MAP-Elites using standard QD performance metrics. These results suggest that QD algorithms augmented by operators from state-of-the-art optimization algorithms can yield high-performing methods for simultaneously exploring and optimizing continuous search spaces, with significant applications to design, testing, and reinforcement learning among other domains.
description: Accepted to GECCO 2020
The demand for meat and fish in Spain: Urban and rural areas
Creators: name: Gracia, A.
name: Albisu, Luis Miguel
name: Gracia, A.
name: Albisu, Luis Miguel
Publisher: name: Unknown
Year: 1998
Subjects: Livestock Production/Industries
Production Economics

description: The aim of the paper is to explain to what extent meat consumption patterns in Spain are different in rural and urban areas and which are the factors explaining differences and similarities. A demand system using cross-section data from the latest Spanish National Survey has been estimated. Unit values have been used instead of market prices and price and quality effects have been obtained. The main conclusion is that meat consumption patterns in urban and rural areas are not really different as regards economic factors. Some small income and price effect differences have been found, specially for fresh pork and fish. Responses to changes in income and price are higher for fresh pork consumption in rural areas and for fish in urban areas. © 1998 Elsevier Science B.V. All rights reserved.
Autori ed editori a Firenze nella seconda metà del sedicesimo secolo: il ‘caso’ Marescotti
Creators: name: Bertoli, Gustavo
Publisher: name: Annali di Storia di Firenze
Year: 2011

description: Dai documenti qui pubblicati apprendiamo che uno dei maggiori editori-stampatori attivi a Firenze alla fine del sedicesimo secolo, Giorgio Marescotti, si faceva sempre pagare dagli autori, senza eccezione. Il fenomeno non è sconosciuto ma la sua categoricità e la sua estensione implicano la presenza di un sistema, funzionante e condiviso da tutti i soggetti, in cui l’editore non aveva quel ruolo di promotore culturale che invece con troppa facilità gli storici attribuiscono a chiunque abbia nel passato sottoscritto un prodotto editoriale.Questi documenti ci permettono poi di criticare l′uso, sempre improprio avanti la nascita dell′editoria moderna, di categorie quali linea o politica editoriale, logica di mercato, editore commerciale o «minore». Come risulta dalla presente ricerca Marescotti e i suoi colleghi non rischiavano se non per (pochi) generi di smercio sicuro perchè non erano in grado di capire il potenziale di un libro, né di immaginarne il pubblico; ed è un errore cercare – e peggio ancora trovare - una logica culturale nei loro Annali. Speculare, infine, la posizione degli autori, che non solo pagavano senza prospettive di guadagno, ma non potevano né disporre a piacere delle copie del loro libro né controllare la trasformazione del loro testo senza maggiori aggravi.
description: Annali di Storia di Firenze, Vol. 2 (2007)
Orientation of Entrance and Burial Chamber in the Pyramids of the Egyptian Fourth and Fifth Dynasties
Creators: name: Sparavigna, Amelia Carolina
Publisher: name: Zenodo
Year: 2025
Subjects: Pyramids
Egypt
Old Kingdom
Fourthe Dynasty
Mastabat Fara'un
Akhet Khufu

description: The Fourth Dynasty of the Egyptian Old Kingdom started with Snefru. The second pharaoh is Cheops, the one of the Great Pyramid of Giza. Then they follow Djedefre, Khafre, Bicheris, Menkaure, Shepseskaf and (perhaps) Djedefptah. Of the kings of the IV Dynasty here we consider the pyramids, to investigate the orientation of their entrances and burial chambers. If possible, the orientation of the sarcophagus is mentioned. The four pyramids built by Snefru show the evolution to the final model with a north entrance and a burial chamber east-west oriented. Then, the pyramids of the Fifth Dynasty are investigated regarding their substructures, which are showing a coherent orientation. The Sekhemkhet (Djoserty) pyramid of the Third Dynasty is also illustrated for comparison.
Book Reviews
Creators: name: Otsuka, Keijiro
name: Abdulai, Awudu
name: Stamoulis, Kostas G.
name: Barrett, Christopher B.
name: Otsuka, Keijiro
name: Abdulai, Awudu
name: Stamoulis, Kostas G.
name: Barrett, Christopher B.
Publisher: name: Unknown
Year: 1998
Subjects: Teaching/Communication/Extension/Profession

description: Books reviewed include: Asian Rice Bowls: The Returning Crisis?by Prabhu L. Pingali, Mahabub Hossain, and Roberta V. Gerpacio; Quantitative Development Policy Analysis by Elisabeth Sadoulet and Alain de Janvry; Countrysides at Risk: The Political Geography of Sustainable Agriculture by Robert Paarlberg; Rural Finance for Food Security for the Poor: Implications for Research and Policy by Manfred Zeller, Gertrud Schrieder, Joachim von Braun and Franz Heidhues
Fiorentini e altri italiani appaltatori di zecche straniere (1200-1600): un progetto di ricerca
Creators: name: Day Jr, William R.
Publisher: name: Annali di Storia di Firenze
Year: 2011

description: Nel tardo Medioevo molti governi appaltarono l’amministrazione delle zecche. Particolarmente significativa, tra gli appaltatori, fu la presenza di mercanti italiani, fiorentini e toscani soprattutto. Questo testo presenta un progetto di ricerca relativo a personale italiano operativo in zecche straniere tra XIII e XVII secolo e insieme le linee di un database liberamente accessibile. Il progetto dà rilievo soprattutto ai maestri zecchieri, i più ricordati nella documentazione, senza dimenticare – dove le fonti lo consentano – altri tipi di maestranze presenti nelle zecche. Il testo rappresenta il primo tentativo di analisi, su ampia base europea, delle attività di italiani in zecche straniere nel contesto della cosiddetta rivoluzione commerciale del Medioevo.
description: Annali di Storia di Firenze, Vol. 5 (2010)
Detection of water vapour in the atmosphere of Tau Bootis b at high resolution
Creators: name: Webb, Rebecca
name: Brogi, Matteo
name: Gandhi, Siddharth
Publisher: name: Zenodo
Year: 2021

description: We report a recent analysis of the thermal emission spectrum of the non-transiting hot Jupiter Tau Bootis b using the NIR spectra from CARMENES/CAHA. Using a cross-correlation (CC) to log-likelihood method, we find evidence for the absorption of water vapour and HCN in this atmosphere in one of observation. We have also done a preliminary high resolution atmospheric retrieval on this data which retrieves a high abundance of water and HCN.
Can extreme electromagnetic fields accelerate the $α$ decay of nuclei?
Creators: name: Pálffy, Adriana
name: Popruzhenko, Sergey V.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The possibility to control the $α$ decay channel of atomic nuclei with electromagnetic fields of extreme intensities envisaged for the near future at multi-petawatt and exawatt laser facilities is investigated theoretically. Using both analytic arguments based on the Wentzel-Kramers-Brillouin approximation and numerical calculations for the imaginary time method applied in the framework of the $α$ decay precluster model, we show that no experimentally detectable modification of the $α$ decay rate can be observed with super-intense lasers at any so-far available wavelength. Comparing our predictions with those reported in several recent publications, where a considerable or even giant laser-induced enhancement of the decay rate has been claimed, we identify there the misuse of a standard approximation.
description: 5 pages
Heavy Quarkonium Dissociation Cross Sections in Relativistic Heavy-Ion Collisions
Creators: name: Wong, Cheuk-Yin
name: Swanson, E. S.
name: Barnes, T.
Publisher: name: arXiv
Year: 2001
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Many of the hadron-hadron cross sections required for the study of the dynamics of matter produced in relativistic heavy-ion collisions can be calculated using the quark-interchange model. Here we evaluate the low-energy dissociation cross sections of $J/ψ$, $ψ'$, $χ$, $Υ$, and $Υ'$ in collision with $π$, $ρ$, and $K$, which are important for the interpretation of heavy-quarkonium suppression as a signature for the quark gluon plasma. These comover dissociation processes also contribute to heavy-quarkonium suppression, and must be understood and incorporated in simulations of heavy-ion collisions before QGP formation can be established through this signature.
description: 38 pages, in LaTex