cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Quantum outage probability for time-varying quantum channels
Creators: name: Martinez, Josu Etxezarreta
name: Fuentes, Patricio
name: Crespo, Pedro
name: Garcia-Frias, Javier
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Recent experimental studies have shown that the relaxation time, $T_1$, and the dephasing time, $T_2$, of superconducting qubits fluctuate considerably over time. Time-varying quantum channel (TVQC) models have been proposed in order to consider the time varying nature of the parameters that define qubit decoherence. This dynamic nature of quantum channels causes a degradation of the performance of quantum error correction codes (QECC) that is portrayed as a flattening of their error rate curves. In this article, we introduce the concepts of quantum outage probability and quantum hashing outage probability as asymptotically achievable error rates by a QECC with quantum rate $R_Q$ operating over a TVQC. We derive closed-form expressions for the family of time-varying amplitude damping channels (TVAD) and study their behaviour for different scenarios. We quantify the impact of time-variation as a function of the relative variation of $T_1$ around its mean. We conclude that the performance of QECCs is limited in many cases by the inherent fluctuations of their decoherence parameters and corroborate that parameter stability is crucial to maintain the excellent performance observed over static quantum channels.
description: 11 pages, 4 figures, will be submitted to Quantum
title: Adult presentation of Bochdalek hernia as an emergency
Creators: name: Alves, Pedro Miguel Gaspar
Publisher: name: EURORAD
Year: 2021
Subjects: subject: Abdominal imaging
subject: Abdomen
subject: Anatomy
subject: CT
subject: Surgery
subject: Congenital
subject: Clinical Cases

description: Clinical History: A 20-year-old man presented with a 1 month history of intermittent dyspepsia and abdominal pain, as well as abdominal distention in the previous 24 hours before attending the hospital.

Blood tests and colonoscopy were unremarkable. No history of recent fever, traumatic injuries or vomits.

description: 20 years, male
Clustering Property of Wolf-Rayet Galaxies in the SDSS
Creators: name: Zhang, Wei
name: Kong, Xu
name: Cheng, Fu-Zhen
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have analysed, for the first time, the clustering properties of Wolf-Rayet (W-R) galaxies, using a large sample of 846 W-R galaxies selected from the Data Release 4 (DR4) of the SDSS. We compute the cross-correlation function between W-R galaxies and a reference sample of galaxies drawn from the DR4. We compare the function to the results for control samples of non-W-R star-forming galaxies that are matched closely in redshift, luminosity, concentration, 4000-Åbreak strength and specific star formation rate (SSFR). On scales larger than a few Mpc, W-R galaxies have almost the same clustering amplitude as the control samples, indicating that W-R galaxies and non-W-R control galaxies populate dark matter haloes of similar masses. On scales between 0.1--1$h^{-1}$ Mpc, W-R galaxies are less clustered than the control samples, and the size of the difference depends on the SSFR. Based on both observational and theoretical considerations, we speculate that this negative bias can be interpreted by W-R galaxies residing preferentially at the centers of their dark matter haloes. We examine the distribution of W-R galaxies more closely using the SDSS galaxy group catalogue of Yang et al., and find that $\sim$82% of our W-R galaxies are the central galaxies of groups, compared to $\sim$74% for the corresponding control galaxies. We find that W-R galaxies are hosted, on average, by dark matter haloes of masses of$10^{12.3}M_\odot$, compared to $10^{12.1}M_\odot$ for centrally-located W-R galaxies and $10^{12.7}M_\odot$ for satellite ones. We would like to point out that this finding, which provides a direct observational support to our conjecture, is really very crude due to the small number of W-R galaxies and the incompleteness of the group catalogue, and needs more work in future with larger samples.
description: 8 pages, 5figures
Additional file 2 of VEGF-dependent testicular vascularisation involves MEK1/2 signalling and the essential angiogenesis factors, SOX7 and SOX17
Creators: name: Blücher, Rheannon O.
name: Lim, Rachel S.
name: Ritchie, Matthew E.
name: Western, Patrick S.
Publisher: name: figshare
Year: 2024
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 2: Fig. S1. The downstream target of MEK1/2, pERK1/2 (phosphorylated ERK1/2) is strongly detected in endothelial cells and weakly detected in Sertoli cells in E12.5-E15.5 testes. Immunofluorescent imaging of testes collected from E12.5, E13.5, E14.5 and E15.5 embryos and stained with DAPI (blue), pERK1/2 (red) and CD31 (endothelial cells and germ cells; cyan). Arrows indicate pERK1/2 positive endothelial cells and asterisks indicate pERK1/2 positive Sertoli cells. Scale bar represents 500 μm in whole view images (first panel) or 100 μm in digital zoom images (right three panels). Biological replicates; n  = 4 testes per stage.
Patterns of variability in gamma-ray blazars
Creators: name: Foschini, L.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Preliminary results of a systematic study on the simultaneous optical-to-X-rays variability in blazars are presented. Data from Swift observations of four bright gamma-ray blazars (3C 279, ON+231, S5 0716+71, PKS 2155-304) have been analyzed, compared, and discussed. Specifically, 3C 279 shows a variable flattening in the low energy part of the X-ray spectrum that appears to be confined in a specific X-ray vs optical/UV fluxes region. Some implications are shortly analyzed.
description: 12 pages, 4 figures. Poster presented at 37th COSPAR Assembly (Montreal, Canada, July 13-20, 2008), Session E17. Revised according to the referees comments. Accepted for publication on Advances in Space Research
Voltage Regulation Support Along a Distribution Line by a Virtual Power Plant Based on a Center of Mass Load Modeling
Creators: name: Moutis, Panayiotis
name: Georgilakis, Pavlos S.
name: Hatziargyriou, Nikos D.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: A voltage regulation method for slow voltage variations at distribution level is proposed, based on a view of the loads, generators and storage along a distribution line as point weights. The "centers of mass" of the absorbed and injected currents (loads & generation, respectively) are compensated by minimizing the distance between them, through proper re-dispatching of the power of the available units and interruptible loads. The technique is recursively applied to lesser parts of the distribution line to address local phenomena and is assumed to be offered as ancillary service to the system operator by a Virtual Power Plant. The favorable results of the methodology are assessed on a distribution line of the island of Rhodes (Greece) under critical loading for numerous scenarios. Unlike previous approaches, the technique focuses specifically in the restoration of bus voltages within standard limits and may reduce the activation of on-line tap changing transformers control.
Continuous time random walk, Mittag-Leffler waiting time and fractional diffusion: mathematical aspects
Creators: name: Gorenflo, Rudolf
name: Mainardi, Francesco
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We show the asymptotic long-time equivalence of a generic power law waiting time distribution to the Mittag-Leffler waiting time distribution, characteristic for a time fractional CTRW. This asymptotic equivalence is effected by a combination of "rescaling" time and "respeeding" the relevant renewal process followed by a passage to a limit for which we need a suitable relation between the parameters of rescaling and respeeding. Turning our attention to spatially 1-D CTRWs with a generic power law jump distribution, "rescaling" space can be interpreted as a second kind of "respeeding" which then, again under a proper relation between the relevant parameters leads in the limit to the space-time fractional diffusion equation. Finally, we treat the `time fractional drift" process as a properly scaled limit of the counting number of a Mittag-Leffler renewal process.
description: 36 pages, 3 figures (5 files eps). Invited lecture by R. Gorenflo at the 373. WE-Heraeus-Seminar on Anomalous Transport: Experimental Results and Theoretical Challenges, Physikzentrum Bad-Honnef (Germany), 12-16 July 2006; Chairmen: R. Klages, G. Radons and I.M. Sokolov
Additional file 3 of VEGF-dependent testicular vascularisation involves MEK1/2 signalling and the essential angiogenesis factors, SOX7 and SOX17
Creators: name: Blücher, Rheannon O.
name: Lim, Rachel S.
name: Ritchie, Matthew E.
name: Western, Patrick S.
Publisher: name: figshare
Year: 2024
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 3: Fig. S2. Immunofluorescent images of E12.5 testes cultured for 24 or 72 h with DMSO or 500 nM MEKi. A) Wide field images of sections from E12.5 testes cultured for 24 (i) or 72 h (ii) shown in Fig. 3. Images show DAPI (blue), pERK1/2 (red) and CD31 (endothelial cells and germ cells; cyan). B) IF images showing SOX9 and pERK1/2 double staining in testis sections of DMSO controls and MEKi-treated samples after 24 h of culture. DAPI (blue), pERK1/2 (green) and SOX9 (red). Arrows indicate pERK1/2 positive Sertoli cells. Scale bar represents 100 μm for 24 h samples or 500 μm for 72 h samples. Biological replicates; n = 4 testes per treatment.
A possible signature of new physics at BES-III
Creators: name: Zou, Jia-Heng
name: Li, Hai-Bo
name: Zhang, Xue-Yao
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The recent observations of the purely leptonic decay $\Ds \to μ^+ ν_μ$ and $τ^+ν_τ$ at CLEO-c and $B$ factory may allow a possible contribution from a charged Higgs boson. One such measurement of the decay constant $f_{D_s}$ differs from the most precise unquenched lattice QCD calculation by 4 $σ$ level. Meanwhile, the measured ratio, ${\cal BR}(\Ds \to μ^+ ν_μ)$ / ${\cal BR}(\Dp \to μ^+ ν_μ)$, is larger than the standard model prediction at 2.0$σ$ level. We discuss that the precise measurement of the ratio ${\cal BR}(\Ds \to μ^+ ν_μ)$ / ${\cal BR}(\Dp \to μ^+ ν_μ)$ at BES-III will shed light on the presence of new intermediate particles by comparing the theoretical predictions, especially, the predictions of high precise unquenched lattice QCD calculation.
description: 5 pages, 3 figures, mini-review, accepted by Chinese Physics C (HEP & NP)
ISSUES OF ORGANIZING EFFECTIVE RISK MANAGEMENT IN COMMERCIAL BANKS
Creators: name: B.M. Alimov
Publisher: name: Zenodo
Year: 2023

description: In this article, the risks that may arise in the banking system of the Republic of Uzbekistan and the effective structural elements and management methods of risk management are widely covered. Scientific views of foreign and local scientists on bank risk management were studied, analyzed and author's opinions were expressed. Also, methods of risk prevention in the banking system and directions for its improvement are proposed.
Evaluating the Robustness of Off-Policy Evaluation
Creators: name: Saito, Yuta
name: Udagawa, Takuma
name: Kiyohara, Haruka
name: Mogi, Kazuki
name: Narita, Yusuke
name: Tateno, Kei
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (stat.ML)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Off-policy Evaluation (OPE), or offline evaluation in general, evaluates the performance of hypothetical policies leveraging only offline log data. It is particularly useful in applications where the online interaction involves high stakes and expensive setting such as precision medicine and recommender systems. Since many OPE estimators have been proposed and some of them have hyperparameters to be tuned, there is an emerging challenge for practitioners to select and tune OPE estimators for their specific application. Unfortunately, identifying a reliable estimator from results reported in research papers is often difficult because the current experimental procedure evaluates and compares the estimators' performance on a narrow set of hyperparameters and evaluation policies. Therefore, it is difficult to know which estimator is safe and reliable to use. In this work, we develop Interpretable Evaluation for Offline Evaluation (IEOE), an experimental procedure to evaluate OPE estimators' robustness to changes in hyperparameters and/or evaluation policies in an interpretable manner. Then, using the IEOE procedure, we perform extensive evaluation of a wide variety of existing estimators on Open Bandit Dataset, a large-scale public real-world dataset for OPE. We demonstrate that our procedure can evaluate the estimators' robustness to the hyperparamter choice, helping us avoid using unsafe estimators. Finally, we apply IEOE to real-world e-commerce platform data and demonstrate how to use our protocol in practice.
description: Accepted at RecSys2021
The Inhomogeneous Background of Hydrogen-Molecule Dissociating Radiation during Cosmic Reionization
Creators: name: Ahn, Kyungjin
name: Shapiro, Paul R.
name: Iliev, Ilian T.
name: Mellema, Garrelt
name: Pen, Ue-Li
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The first, self-consistent calculations are presented of the cosmological, H2-dissociating UV background produced during the epoch of reionization by the sources of reionization. Large-scale radiative transfer simulations of reionization trace the impact of all the ionizing starlight on the IGM from all the sources in our simulation volume down to dwarf galaxies of mass ~10^8 Msun, identified by very high-resolution N-body simulations, including the self-regulating effect of IGM photoheating on dwarf galaxy formation. The UV continuum emitted below 13.6 eV by each source is then transferred through the same IGM, attenuated by atomic H Lyman series resonance lines, to predict the evolution of the inhomogeneous radiation background in the Lyman-Werner bands of H2 between 11 and 13.6 eV. On average, the intensity of this Lyman-Werner background is found to rise to the threshold level at which dissociation suppresses H2 cooling and star formation inside minihalos, long before reionization is complete. Spatial variations in the Lyman-Werner background are found which result from the clustering of sources associated with large-scale structure formation, such that intensity fluctuations correlate with matter density fluctuations. As a result, the Lyman-Werner background rises to the threshold level for H2 suppression earlier in the vicinity of the reionization sources and their H II regions.
description: Accepted for publication in ApJ
Introducción a la Ciencia Abierta
Creators: name: Valverde-Berrocoso, Jesús
Publisher: name: Zenodo
Year: 2021
Subjects: Open Science
Open Access
Open Data
Open Education
Open Educational Resources
Ciencia Abierta
Acceso Abierto
Datos en Abierto
Educación Abierta
Recursos Educativos Abiertos

description: Documento de trabajo que introduce los conceptos básicos de la Ciencia Abierta (Open Science), así como procedimientos y herramientas para su desarrollo en proyectos de investigación del ámbito de las Ciencias de la Educación. Es un documento elaborado desde la Red Universitaria de Investigación e Innovación Educativa (REUNI+D). La presente publicación ha sido posible gracias a la financiación concedida por el Programa Estatal de Generación de Conocimiento y Fortalecimiento Científico y Tecnológico del Sistema de I+D+i. Acciones de dinamización «Redes de Investigación». Ministerio de Ciencia, Innovación y Universidades del Gobierno de España. A través de la ayuda de referencia RED2018-102439-T, denominada: «Red universitaria de investigación e innovación educativa. Conectando redes y promoviendo el conocimiento abierto». Coordinadora de la Red: Ana García-Valcárcel Muñoz-Repiso (GITE-USAL) Equipo de investigación: Manuel Area Moreira (EDULLAB); José Miguel Correa Gorrospe (ELKARRIKERTUZ); Adriana Gewerc Barujel (STELLAE); Almudena Ocaña Fernández (ICUFOP); José Ignacio Rivas Flores (PROCIE); Carmen Alba Pastor (INDUCT); Jesús Valverde Berrocoso (NODO EDUCATIVO); Fernando Hernández Hernández (ESBRINA); Teresa González Ramírez (GIETE); Rocío Anguita Martínez (CEAEX).
Translating Text and Context: Translation Studies and Systemic Functional Linguistics. Volume 2: From Theory to Practice. 2nd ed.
Creators: name: Manfredi, Marina
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2014
Subjects: L-LIN/12 Lingua e traduzione - Lingua inglese

description: Following on the first volume (Manfredi 2008), which focuses on the theoretical issues that link Systemic Functional Linguistics (SFL) and Translation Studies (TS), this second volume of Translating Text and Context aims at demonstrating how they can be fruitfully exploited in the actual practice of translation. The book starts with the illustration of four models informed by SFL which have been offered by renowned TS scholars and linguists (House 1977/1981, 1997, 2014; Bell 1991; Baker 1992/2011; Steiner 1997, 1998, 2004) and which, to varying degrees, have been applied to the practice of translation. Then, partly drawing on such models, as well as on the SFL analysis outlined by Miller (2005), the book puts forth a Hallidayan approach to translation practice, integrated with further insights from TS. The goal is to offer a tool for translation teaching, to be employed for both the production and evaluation of target texts, working with the language pair English/Italian. It is argued that the proposed SFL approach could be exploited to translate a wide range of text-types, from (semi-)specialized to literary. The model is also seen in operation through the practical analysis and translation, from English into Italian, of a diverse range of sample texts, from a variety of text-types. The book’s ultimate aim is to offer a contribution to translation education, in the hope that an SFL integrated approach could provide a systematic method for coping with the intricacies that languages, texts and contexts inevitably pose in a complex and multifaceted process such as translation is.
Anaptomecus temii Jaeger & Rheims & Labarque 2009, sp. n.
Creators: name: Jaeger, Peter
name: Rheims, Cristina
name: Labarque, Facundo
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Sparassidae
Anaptomecus
Anaptomecus temii

description: Anaptomecus temii sp. n. urn:lsid:zoobank.org:act: C9786DE2-401A-4087-87D1-2D78D792F926 Figs 100-101 Type material . ♁ holotype from Panama, Panama Province, P. Nac. Altos de Campana, 1 hectare Pancoding inventory, [8°41’00.4” N, 79°55’47.4” W], 895 m, 14.–19. VI.2007, M. Arnedo, D. Dimitrov, G. Hormiga, F. Labarque, M. Ramírez leg., vou- cher codes SCU2NDH005, preparation codes FML-00605 (MACN 16834). Paratype: 1 ♁, same data as for holotype; voucher codes SCB1DGR001, preparation codes LNP-00397-398 (MCNB 2008-0987). Etymology. The specific name honours Temistocles “Temi” Tejedor, who provided logistic support to the PANCODING team during the fieldwork in Panama in June 2007 and 2008 that led to the discovery of this species. His hospitality and friendship were essential for the successful bioinventoring of the spiders and water beetles of the Panamanian cloud forests; name in genitive case. Diagnosis. Males: embolus emerging mesally with well developed teeth at base and a smooth lamina at the end, conductor reduced, RTA relatively close to cymbium (Figs 100-101). Description. Male (MACN 16834, holotype). Total length 10.87. Prosoma: 4.08 long, 2.92 wide. Opisthosoma: 6.79 long, 1.72 wide. Eye diameters and interdistances: AME 0.20, ALE 0.18, PME 0.16, PLE 0.18, AME–AME 0.12, AME–ALE 0.08, PME–PME 0.18, PME–PLE 0.22, AME–PME 0.26, ALE–PLE 0.24. Legs: I: femur 10.76, patella 1.80, tibia 12.22, metatarsus 12.71, tarsus 3.08, total 40.57; II: 10.11, 1.94, 11.57, 12.71, 2.96, 39.29; III: 6.79, 1.50, 7.35, 6.95, 1.96, 24.55; IV: 8.81, 1.60, 8.65, 9.70, 2.44, 31.2. Leg formula 1243. Spination: femur I–II: p1-1-1; d1-0-1; r1-1- 1; femur III: p1-1-1; r1-1-1; femur IV: p1-1-0; r1-0-0; tibia I–II: p1-1-0; d1-1-0; r1-1- 0; v2-2-0; tibia III–IV: p1-1-0; d0-1-0; r1-1-0; v2-2-0; metatarsus I–II: p1-0-0; r1-0-0; v2-2-0; metatarsus III: p1-1-0; r1-1-0; v2-2-0; metatarsus IV: p1-1-1; r1-1-1; v2-2-2. Colouration. Prosoma pale yellow with brown margins, anterior dots and fovea. Chelicerae pale yellow. Pedipalps and legs pale yellow with olive green markings at the base of the spines. Sternum, gnathocoxae and labium pale yellow. Opisthosoma pale orange, with three yellow and white large dots laterally. Variation. Males (n=2): total length 10.87-10.59; prosoma 4.08-3.76; femur I 11.25-10.76. Distribution. Eastern Panama.
description: Published as part of Jaeger, Peter, Rheims, Cristina & Labarque, Facundo, 2009, On the huntsman spider genera Sparianthina Banks, 1929 and Anaptomecus Simon, 1903 from South and Central America (Araneae, Sparassidae), pp. 115-147 in ZooKeys 16 (16) on pages 141-143, DOI: 10.3897/zookeys.16.236, http://zenodo.org/record/576479
Observable Properties of Orbits in Exact Bumpy Spacetimes
Creators: name: Gair, Jonathan R
name: Li, Chao
name: Mandel, Ilya
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We explore the properties of test-particle orbits in "bumpy" spacetimes - stationary, reflection-symmetric, asymptotically flat solutions of Einstein equations that have a non-Kerr (anomalous) higher-order multipole-moment structure but can be tuned arbitrarily close to the Kerr metric. Future detectors should observe gravitational waves generated during inspirals of compact objects into supermassive central bodies. If the central body deviates from the Kerr metric, this will manifest itself in the emitted waves. Here, we explore some of the features of orbits in non-Kerr spacetimes that might lead to observable signatures. As a basis for this analysis, we use a family of exact solutions proposed by Manko & Novikov which deviate from the Kerr metric in the quadrupole and higher moments, but we also compare our results to other work in the literature. We examine isolating integrals of the orbits and find that the majority of geodesic orbits have an approximate fourth constant of the motion (in addition to the energy, angular momentum and rest mass) and the resulting orbits are tri-periodic to high precision. We also find that this fourth integral can be lost for certain orbits in some oblately deformed Manko-Novikov spacetimes. However, compact objects will probably not end up on these chaotic orbits in nature. We compute the location of the innermost stable circular orbit (ISCO) and find that the behavior of orbtis near the ISCO can be qualitatively different depending on whether the ISCO is determined by the onset of an instability in the radial or vertical direction. Finally, we compute periapsis and orbital-plane precessions for nearly circular and nearly equatorial orbits in both the strong and weak field, and discuss weak-field precessions for eccentric equatorial orbits.
description: 42 pages, 20 figures, accepted by Phys. Rev. D, v2 has minor changes to make it consistent with published version
Additional file 8 of VEGF-dependent testicular vascularisation involves MEK1/2 signalling and the essential angiogenesis factors, SOX7 and SOX17
Creators: name: Blücher, Rheannon O.
name: Lim, Rachel S.
name: Ritchie, Matthew E.
name: Western, Patrick S.
Publisher: name: figshare
Year: 2024
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 8: Fig. S3. Epithelial cell marker, VE-cadherin, is lost in gonads treated with MEK1/2 inhibitor for 24 h. Immunofluorescence images showing VE-cadherin and CD31 double staining in gonad sections of DMSO controls and 500 nM MEKi or 500 nM VEGFRi-treated samples after 24 h of culture. DAPI (blue), VE-cadherin (red) and CD31 (cyan). Scale bar represents 500 μm for wide field images or 100 μm in digital zoom images. Biological replicates; n = 4 testes per treatment. Key: G – gonad, M – mesonephros.
Perceptions of educational slides : implications for multicultural and development education
Creators: name: Yas, Arlene Marion
Publisher: name: University of British Columbia
Year: 2010

description: The problem investigated was the analysis of connotative meaning of educational materials. Slides of Third World plantation workers were rated on two 15-scale semantic differential forms by a group of Scottish teacher trainees. The scales, generated from general qualitative guidelines found in multicultural and development education literature, were tested for their relevance to the specific experimental materials in a pilot study. The persons depicted in the slides were labelled with different descriptive terms - loaded and neutral. Each subject was exposed to one type of label. The results demonstrated that the persons depicted in the slides were not perceived to be presented in an equal manner. Although both persons received mostly negative ratings, the image of the tea picker was generally rated more positively than that of the plantation worker. The overall photographs were also responded to differentially. The picker slide received more positive responses than did the worker slide. The adjective scales were grouped together into clusters and analysed for treatment and interaction effects. Treatment labels significantly affected at least some of the ratings. In the case of the plantation worker, the loaded label guided the viewers to more positive perceptions, at least on certain scale clusters. The discovery that more intense judgements were less affected by label treatment indicated that viewers' responses were influenced by their own personal attitudes towards the individual depicted as well as by the manner in which the individual was presented. The relationship between person perception and slide evaluation was not found to be statistically significant. More indepth research is required to determine the actual behaviour resulting from the attitudes revealed in the present type of study. Would teachers or teacher trainees actually use these slides in the classroom environment? And would they refer to the individuals depicted in the derogatory fashion implied by some of the judgements expressed? And finally, what effects would such negative teacher attitudes have on their pupils?
Note on Inversion Formula to Determine Binary Elements by Astrometry
Creators: name: Asada, Hideki
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Simplified solutions to determine binary elements by astrometry were obtained in terms of elementary functions (Asada et al. 2004), and therefore require neither iterative nor numerical methods. In the framework of the simplified solution, this paper discusses the remaining two parameters of the time of periastron passage and the longitude of ascending node in order to complete the solution. We thus clarify a difference between the simplified solution and other analytical methods.
description: 12 pages, 4 figures, 2 tables; accepted for publication in PASJ
The Submillimeter Array Polarimeter
Creators: name: Marrone, Daniel P.
name: Rao, Ramprasad
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We describe the Submillimeter Array (SMA) Polarimeter, a polarization converter and feed multiplexer installed on the SMA. The polarimeter uses narrow-band quarter-wave plates to generate circular polarization sensitivity from the linearly-polarized SMA feeds. The wave plates are mounted in rotation stages under computer control so that the polarization handedness of each antenna is rapidly selectable. Positioning of the wave plates is found to be highly repeatable, better than 0.2 degrees. Although only a single polarization is detected at any time, all four cross correlations of left- and right-circular polarization are efficiently sampled on each baseline through coordinated switching of the antenna polarizations in Walsh function patterns. The initial set of anti-reflection coated quartz and sapphire wave plates allows polarimetry near 345 GHz; these plates have been have been used in observations between 325 and 350 GHz. The frequency-dependent cross-polarization of each antenna, largely due to the variation with frequency of the retardation phase of the single-element wave plates, can be measured precisely through observations of bright point sources. Such measurements indicate that the cross-polarization of each antenna is a few percent or smaller and stable, consistent with the expected frequency dependence and very small alignment errors. The polarimeter is now available for general use as a facility instrument of the SMA.
description: To appear in Proc. SPIE 7020, 'Millimeter and Submillimeter Detectors and Instrumentation'. Uses spie.cls
title: Die Lupe: Jahrgang 1, 1925, Nr. 5, 20. März 1925
Creators: name: :None
Publisher: name: Verlag Die Lupe
Year: 1925
Subjects: subject: Bestände des Stadtarchivs Braunschweig
subject: Brunsvicensien der Universitätsbibliothek Braunschweig
subject: Kunst- und Kulturgeschichte
subject: 7

description: Die Lupe: Braunschweigische Wochenschrift für Theater, Musik, Kunst, Literatur, Film und Kabarett, vol. 1, no. 5
Revitalizing community forestry in the Amhara Region of Ethiopia: A property right perspective
Creators: name: Amsalu, Tadesse
Publisher: name: Journal of Agriculture and Environmental Sciences
Year: 2023

description: Severe deforestation, land degradation, and the lack of forest products in Ethiopia have necessitated the implementation of a community forestry program since the 1980s by mobilizing the local communities. However, there have been incidents indicating that many of the community forests are either degrading or remaining unproductive. While community forests are, in principle, the collective property of the local community, empirical evidence concerning how property rights impact their management and their role in enhancing rural livelihoods and environmental rehabilitation is lacking. This study aims to investigate the performance of community forestry through the lens of property rights and tenure security, in order to uncover the challenges impeding community forestry in Ethiopia, with a focus on community forests in the Amhara Region. The study gathered primary data on community forest management from two community forests located in East Gojam and North Wollo, using questionnaires, focus group discussions, key informant interviews, and field observations. Additionally, secondary data on legal frameworks were collected from institutions involved in community forestry. The data analysis employed descriptive statistics and thematic analysis. The findings of the study revealed that a majority of respondents (91%) lacked clarity regarding the objectives of establishing community forests, and about 95% claimed that community forests belong to the state. These incidents have led to diminished interest in continuing the program. The study highlighted that the community forestry program suffers from inadequate policy and legal provisions, chronic institutional instability, overlapping mandates, and limited community engagement. These factors have weakened property rights, which are reflected in tenure insecurity and the absence of individual household benefit packages. Consequently, it can be concluded that community forest interventions have been promoted based on general belief in the importance of trees for rural livelihoods and ecosystem rehabilitation, rather than as part of a deliberate and directed policy and strategy. In summary, revitalizing community forestry in Ethiopia necessitates a thorough understanding of property rights and tenure security issues. In this regard, it is imperative for government agencies to enact a clear national strategy for community forestry development and adopt a supportive role to enable communities to establish robust community forestry institutions to safeguard their rights while fostering community forestry and environmental protection activities.
description: Journal of Agriculture and Environmental Sciences, Vol. 8 No. 2 (2023)
Additional file 10 of VEGF-dependent testicular vascularisation involves MEK1/2 signalling and the essential angiogenesis factors, SOX7 and SOX17
Creators: name: Blücher, Rheannon O.
name: Lim, Rachel S.
name: Ritchie, Matthew E.
name: Western, Patrick S.
Publisher: name: figshare
Year: 2024
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 10: Fig. S5. SOX7/17 is detected in endothelial cells in E12.5-E15.5 testes. Immunofluorescent imaging of testes collected from E12.5, E13.5, E14.5 and E15.5 embryos, stained with DAPI (blue), SOX7/17 (red) and CD31 (cyan). Arrows indicate SOX7/17 positive endothelial. Testes were obtained from embryos collected directly from pregnant females at E12.5, E13.5, E14.5 and E15.5. Scale bar represents 500 μm in whole view images (first panel) or 100 μm in digital zoom images (right three panels). Arrows indicate SOX7/17 positive endothelial cells. Biological replicates; n = 4 testes per stage.
Characteristics of the cattle fattening system and body conformation of beef cattle in Bahir Dar Special Zone, Amhara Regional State, Ethiopia
Creators: name: Mekuriaw, Agernesh
name: Taye, Mengistie
name: Tegegne, Firew
Publisher: name: Journal of Agriculture and Environmental Sciences
Year: 2023

description: The study was conducted in the urban and peri-urban areas of Bahir Dar special zone, Amhara Regional State, Ethiopia, with the objectives of characterizing the cattle fattening system and conformation traits of fattening cattle in the area. Data on the fattening systems were collected from 112 cattle fatteners (72 from peri-urban and 40 fatteners from urban areas) who have experience with cattle fattening using a semi-structured questionnaire. The beef cattle conformational traits measurement was carried out on fattening cattle on a total of 60 animals (30 from peri-urban farms and 30 from urban farms) in selected farms under the fattener’s management condition. Twelve farms were used for the body conformation measurement of the animals using ICAR guidelines. The survey data was analyzed and summarized using descriptive statistics and index ranking. Conformational trait data were analyzed using the General Linear Model Procedure of SAS 9.1. The overall mean family size, age of household heads, and landholding per household were 8.43, 42.31 years, and 0.77 hectares, respectively. Most of the respondents in the periurban hold cattle for draft power (index = 0.40). The respondents prefer intact and matured bulls in the urban (100%) and peri-urban (93%) areas. The respondents, on average, fatten three times a year (47.3%) with a mean number of 8.08 fattening cattle. The main feed sources in the peri-urban and urban areas were crop residue (index = 0.26) and agro-industrial by-products (index = 0.63), respectively. Most of the cattle fatteners select their fattening cattle based on body conformation (index 0.29) and condition (index 0.21). The mean initial and final body weight of fattening cattle were 348.75kg and 425.33 kg, respectively. In general, the cattle fattening practice needs to be supported by the extension system so as to efficiently use the resources.
description: Journal of Agriculture and Environmental Sciences, Vol. 8 No. 2 (2023)
Productivity, economic performances and survivability of exotic chicken breeds under small-scale chicken production system in South Gondar zone, Ethiopia
Creators: name: Matebie, Birtukan
name: Moges, Fisseha
name: Tassew, Asaminew
name: Tegegne, Firew
Publisher: name: Journal of Agriculture and Environmental Sciences
Year: 2023

description: The study was conducted to evaluate the growth, survivability and egg production performance of Bovans Brown and SassoT44 commercial chicken breeds reared in small-scale chicken production enterprises in selected districts of South Gondar Zone in Ethiopia. A multi-stage sampling technique was used to collect data in the year 2019. A total of 21 small-scale chicken farms and 350 chickens were selected for the survey and monitoring-data collection, respectively. The survey data was analyzed using SPSS Version 20 and the GLM procedure of SAS 9.2 was used for the monitoring data. The majority of the producers (71.4%) reared Sasso T44 breed. Most of the farms (90.5%) used commercial feed even though they are challenged by feed shortage and increased feed cost. The interaction effect of breed-district was significant on the body weight and daily weight gain of chickens that the body weights of Sasso T44 chickens at different ages in Addis Zemen district was significantly higher than the other two districts. The overall mortality rate of the chickens up to the 22th weeks of age was 13.2% and 11.5% for Sasso T44, and Bovans Brown, respectively. The average egg production per hen up to the 45th weeks of age was significantly (P<0.05) higher for Bovans than Sasso T44. The overall hen day egg production in the first phase (up to the 45th weeks of age) was 65.6% and 57.8% for Bovans Brown and Sasso T44, respectively. There was a significant difference (P<0.0001) in age at first egg between the two breeds that Bovans Brown (132 days) was better than Sasso T44 (164 days) breed. In general, chicken in Addis Zemen performed better both in growth and egg production. Sosso T44 breed was better in growth performance while Bovans Brown were better in egg production traits.
description: Journal of Agriculture and Environmental Sciences, Vol. 8 No. 2 (2023)
3D MODELLING OF UNTWISTED MULTIFILAMENT THREADS, CURVED IN A KNITTED LOOP
Creators: name: Ielina, T.
name: Galavska, L.
name: Ausheva, N.
name: Dzikovich, T.
Publisher: name: Deutsche Internationale Zeitschrift für zeitgenössische Wissenschaft
Year: 2021
Subjects: Knit
3D modelling
untwisted multifilament thread
algorithm

description: To improve the mathematical software for three-dimensional knitwear modelling systems at the micro-level, an algorithm for shifting filaments within reserved volumes has been developed. The algorithm increases the accuracy of the model of knitwear structures, made of untwisted multifilament threads, considering arbitrary lateral shifts of the filaments within their reserved boundaries
Recrystallization of epitaxial GaN under indentation
Creators: name: Dhara, S.
name: Das, C. R.
name: Hsu, H. C.
name: Raj, Baldev
name: Bhaduri, A. K.
name: Chen, L. C.
name: Chen, K. H.
name: Albert, S. K.
name: Ray, Ayan
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We report recrystallization of epitaxial (epi-) GaN(0001) film under indentation.Hardness value is measured close to 10 GPa, using a Berkovich indenter. Pop-in burst in the loading line indicates nucleation of dislocations setting in plastic motion of lattice atoms under stress field for the recrystallization process. Micro-Raman studies are used to identify the recrystallization process. Raman area mapping indicates the crystallized region. Phonon mode corresponding to E2(high) close to 570 cm-1 in the as-grown epi-GaN is redshifted to stress free value close to 567 cm-1 in the indented region. Evolution of A1(TO) and E1(TO) phonon modes are also reported to signify the recrystallization process.
description: 10 pages, 3 figures,
Resettlement and land rights: Implication on land use and land cover change in Ethiopia
Creators: name: Amsalu, Tadesse
name: Kefale, Berhanu
Publisher: name: Journal of Agriculture and Environmental Sciences
Year: 2023

description: In Ethiopia, resettlement schemes have been widely implemented in response to famine and food insecurity. Since 2003, planned resettlement initiatives have been carried out, considering farm households’ willingness as a pivotal factor. To enhance the attractiveness of the resettlement program, the Amhara regional state attempted to offer resettlers dual landholding rights. These rights encompassed perpetual landholding in the new settlement and a three-year guarantee against losing their landholdings in the old settlement if they chose to leave due to discomfort. This study aimed to address conceptual and empirical gaps in understanding the relationship between the resettlement process, land rights/tenure, and changes in land use and land cover (LULC) within this new approach. The goal was to provide policy directions. Employing a socio-spatial research methodology, data was generated using GIS techniques, questionnaires, and focus group discussions. The study found that unrestricted encroachment into woodlands and grazing lands has led to severe LULC changes in the study area.  The land use land cover change analysis between 2003 and 2016 indicated that the forest cover and bushland decreased by 3,879.18 ha and 2,810.16 ha respectively, and conversely farmland has increased by 5,814.09 ha.   Furthermore, due to the absence of clear property rights definitions and the provision of dual land rights, many resettlers opted to maximize benefits from both land possessions rather than establishing a settled life in the new settlement area.  Despite the innovative nature of the resettlement program with its focus on providing dual land rights to relieve pressure in degraded highlands and transform livelihoods in more productive lowland areas, the initiative faced challenges in controlling land rights and management issues in both the old and new resettlement areas. Observations in these areas contradicted the presumption of the new resettlement policy, aiming to bolster farmers' livelihood security and environmental protection. This study underscores the intricate and multi-dimensional nature of the relationship between resettlement, land rights/tenure, and LULC changes in Ethiopia. To ensure the success of innovative resettlement programs, robust institutions supported by policy frameworks that comprehensively consider social, economic, political, and technical elements impacting resettlement are imperative. The study also recommends the implementation of a consolidated land governance system from the outset, complemented by a strong monitoring and evaluation system, to effectively address resettlers' land rights and obligations, thereby improved livelihoods and   efficient land use and management could be advanced in the settlement areas
description: Journal of Agriculture and Environmental Sciences, Vol. 8 No. 2 (2023)
Optimizing seeding rates for irrigated bread wheat (Triticum aestivum L.) varieties in the lowland area of Jawi, northwestern Ethiopia
Creators: name: Shigediba, Solomon
name: Bitew, Yayeh
Publisher: name: Journal of Agriculture and Environmental Sciences
Year: 2023

description: Bread wheat (Triticum aestivum L.) is one of the main food security crops in sub-Saharan Africa. The Ethiopian government is putting a great effort into increasing the production of bread wheat under various production systems to narrow the gap between demand and supply. There is no agronomic recommendation for wheat production produced under irrigation conditions. Thus, this study was initiated to identify the optimum seeding rates of different wheat varieties for the highest-yield and profitability in the lowland area of northwestern Ethiopia under irrigation conditions in 2020/2021. The experiment was laid out using a randomized complete block design with three replications. The treatments are five levels of seeding rates (100, 125, 150, 175 and 200 kg ha-1) and three bread wheat varieties (Fentale-2, Kakaba and Ogelcho). Wheat yield and yield component data were statistically subjected to analysis of variance using SAS-JMP-16 software. Results revealed that the performance of wheat varieties in the lowland area of Jawi was promising irrespective of their yield differences. The study showed the highest number of total and effective tillers per unit area; and biomass and grain yield were recorded when varieties Fentale-2, Kakaba and Ogelcho were planted at a seed rate of 200 kg ha-1, 175 kg ha-1 and 200 kg ha-1, respectively.The same varieties gave a grain yield of 3.99 t ha-1, 3.47 t ha-1 and 3.44 t ha-1, respectively. On the other side, maximum net benefit and marginal rate of return were obtained when the variety Fentale-2 was planted at a seeding rate of 200 kg ha-1 (NB = 65,778.8 ETB ha-1 and MRR = 224 %) followed by the same variety at the seed rate 175 kg ha-1 (NB = 63,402.4 ETB ha-1 and MRR = 297 %). Thus, it can be concluded that planting variety Fentale-2 with 200 kg ha-1 seed rate under irrigation condition is the promising agronomic practice in lowland agro-ecology of Jawi area. However, further research is also recommended by considering the appropriate planting time and the irrigation water requirement.
description: Journal of Agriculture and Environmental Sciences, Vol. 8 No. 2 (2023)
Seed tuber cutting improves tuber yield of potato (Solanum tuberosum L,) varieties under irrigation conditions in Dangla district of Amhara Region, Ethiopia
Creators: name: Negash, Addisu Muluken
name: Melak, Tesfaye
name: Kolech, Semagn Asredie
Publisher: name: Journal of Agriculture and Environmental Sciences
Year: 2023

description: Potato (Solanum tuberosum L.) is an important cash and food crop in Ethiopia. However, lack of planting material and improved varieties are among the major factors affecting its productivity. Therefore, an experiment was conducted at Gayeta Kebele of Dangla district, Awi Zone, Northwestern Ethiopia to study the effect of seed tuber cutting on yield and yield components of potato varieties under irrigated conditions.  The experiment consisted of two improved varieties (‘Belete’ and ‘Jalenie’) along with one local variety and two tuber size categories and their half cuttings (whole large tuber (>75g), whole-medium tuber (39-75g), half cuttings of large tuber and half cuttings medium tuber. It was arranged with a factorial combination in RCBD with three replications.  Phenological, growth, yield and quality parameters were significantly affected by the main factors (cutting and variety). Whole-large and half-large tuber sizes and Belete variety showed superior performance on marketable (38.24 t ha-1) and total tuber yield (40.26 tha-1) over the rest of the tuber sizes and varieties. The combination of Belete variety with whole-large seed tubers recorded the highest net benefit 261,516 ETB ha-1 with an acceptable marginal rate of return (113.6%). The second highest net benefit (247,001.3 ETB ha-1) with an acceptable marginal rate of return (2566.67%) was recorded when Beltete variety was planted using half-large cut tubers. Hence, Belete variety with whole-large seed tubers, and half-large cut tubers could be recommended for resource-rich and poor farmers, respectively, for the production of potatoes under irrigated conditions in Gayeta kebele and areas with similar agro-ecology. Repeating the research in different seasons and locations is also recommended.
description: Journal of Agriculture and Environmental Sciences, Vol. 8 No. 2 (2023)