cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The photospheric radiation model for the prompt emission of Gamma-ray Bursts: Interpreting four observed correlations
Creators: name: Fan, Yi-Zhong
name: Wei, Da-Ming
name: Zhang, Fu-Wen
name: Zhang, Bin-Bin
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We show that the experiential $E_{\rm p}-L$, $Γ-L$, $E_{\rm p}-Γ$ and ${\rm \barη_γ}-E_{\rm p}$ correlations (where $L$ is the time-averaged luminosity of the prompt emission, $E_{\rm p}$ is the spectral peak energy, $Γ$ is the bulk Lorentz factor and $\barη_γ$ is the emission efficiency of Gamma-ray bursts) are well consistent with the relations between the resembling parameters predicted in the photospheric radiation model of the prompt emission of Gamma-ray bursts. The time-resolved thermal radiation of GRB 090902B does follow the $E_{\rm p}-L$ and $Γ-L$ correlations. A reliable interpretation of the four correlations in alternative models is still lacking. These facts may point towards a photospheric origin of prompt emission of some Gamma-ray Bursts.
description: 9 pages, 1 figure, accepted for publication in ApJL
Complexity of Indefinite Elliptic Problems
Creators: name: Werschulz, Arthur G.
Publisher: name: Columbia University
Year: 1983
Subjects: subject: Computer science
subject: Mathematics
subject: FOS: Mathematics

description: We study the complexity of 2mth order definite elliptic problems Lu = f (with homogeneous Dirichlet boundary conditions) over a d-dimensional do- main Ω, error being measured in the Hm(Ω)-norm. The problem elements f belong to the unit ball of Wr,p(Ω), where p ∈ [2,∞] andr > d/p. Informa- tion consists of (possibly-adaptive) noisy evaluations of f or the coefficients of L. The absolute error in each noisy evaluation is at most δ. We find that the nth minimal radius for this problem is proportional to n−r/d + δ,and that a noisy finite element method with quadrature (FEMQ), which uses only function values, and not derivatives, is a minimal error algorithm. This noisy FEMQ can be efficiently implemented using multigrid techniques. Using these results, we find tight bounds onthe ε-complexity (minimal cost of calculating anε-approximation) for this problem, said bounds depending on the cost c(δ) of calculating a δ-noisy information value. As an example, if the cost of a δ- noisy evaluation isc(δ) = δ−s (for s > 0), then the complexity is proportional to (1/ε)d/r+s.
MPEC 2023-W153 : NINE NEW TNOS
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: NINE NEW TNOS

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Report on farmers' learning capacity and networks of influence in 11 European case studies
Creators: name: Urquhart, Julie
name: Accatino, Francesco
name: Appel, Franziska
name: Antonioli, Federico
name: Berry, Robert
name: Bertolozzi-Caredio, Daniele
name: Bilttebier, Jo
name: Black, Jasmine
name: Bohatereţ, Valentin-Mihai
name: Brumă, Ioan-Sebastian
name: Coopmans, Isabeau
name: Courtney, Paul
name: Daskiewicz, Hendrik
name: Dinculescu, Corina
name: Dinu-Vasiliu, Codrin
name: Dobay, Krisztina Melinda
name: Gavrilescu, Camelia
name: Gradziuk, Piotr
name: Heinrich, Florian
name: Izvoranu, Anca-Marina
name: Johansson, Sara
name: Klein, Konstantin
name: Matei, Daniela
name: Maye, Damian
name: Peneva, Mariya
name: Petitt, Andrea
name: Pitson, Christine
name: Severini, Simone
name: Slijper, Thomas
name: Soriano, Bárbara
name: Tanasa, Lucian
name: Toma, Camelia
name: Tudor, Monica
name: Vigani, Mauro
name: Zawalińska, Katarzyna
Publisher: name: Zenodo
Year: 2017

description: Learning is considered an important component for resilience building in socio-ecological systems, not least because resilience is about dealing with, adapting to and responding to change. Thus, knowledge constantly needs revision and approaches to management require adapting to changing circumstances. This deliverable examines the role that learning plays across the resilience capacities. Through 11 farming system case studies across Europe, this work aims at identifying farmer attributes that enable or constrain learning, understanding the networks of influencers on farmer decision-making, identifying the external factors that enable or constrain learning and at assessing European farmers’ learning capacity in the context of the resilience capacities of robustness, adaptability and transformability.
description: EU; en; contact: jurquhart1@glos.ac.uk
An Amorphous Teflate Doped Aluminium Chlorofluoride: A Solid Lewis‐Superacid for the Dehydrofluorination of Fluoroalkanes
Creators: name: Bui, Minh
name: Hoffmann, Kurt F.
name: Braun, Thomas
name: Riedel, Sebastian
name: Heinekamp, Christian
name: Scheurell, Kerstin
name: Scholz, Gudrun
name: Stawski, Tomasz M.
name: Emmerling, Franziska
Publisher: name: Freie Universität Berlin
Year: 2023
Subjects: subject: aluminium fluorides
subject: aluminium teflates
subject: C−F activation
subject: Lewis superacids
subject: silanes
subject: 500 Naturwissenschaften und Mathematik::540 Chemie::540 Chemie und zugeordnete Wissenschaften

description: An anion‐doped aluminium chlorofluoride AlCl0.1F2.8(OTeF5)0.1 (ACF‐teflate) was synthesized. The material contains pentafluoroorthotellurate (teflate) groups, which mimic fluoride ions electronically, but are sterically more demanding. They are embedded into the amorphous structure. The latter was studied by PDF analysis, EXAFS data and MAS NMR spectroscopy. The mesoporous powder is a Lewis superacid, and ATR‐IR spectra of adsorbed CD3CN reveal a blue‐shift of the adsorption band by 73 cm−1, which is larger than the shift for SbF5. Remarkably, ACF‐teflate catalyzes dehydrofluorination reactions of monofluoroalkanes to yield olefins in C6D6. In these cases, no Friedel‐Crafts products were formed.
The Spatial Clustering of ROSAT All-Sky Survey AGNs III. Expanded Sample and Comparison with Optical AGNs
Creators: name: Krumpe, Mirko
name: Miyaji, Takamitsu
name: Coil, Alison L.
name: Aceves, Hector
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: This is the third paper in a series that reports on our investigation of the clustering properties of AGNs identified in the ROSAT All-Sky Survey (RASS) and Sloan Digital Sky Survey (SDSS). In this paper, we extend the redshift range to 0.07
description: 24 pages, 12 figures, accepted for publication in ApJ
Colorado water, July/August 2016
Creators: name: Mokry, Melissa
name: Colorado Water Institute, Publisher
Publisher: name: Mountain Scholar
Year: 2016
Subjects: subject: Water resources development -- Colorado
subject: Water use -- Colorado
subject: Water-supply -- Colorado
subject: Water-supply -- Management -- Colorado

description: The newsletter is devoted to highlighting water research and activities at CSU and throughout Colorado.
description: Newsletter of the Colorado Water Center. Theme: Water data.
Sericomyrmex mayri Forel 1912
Creators: name: Mera-Rodríguez, Daniela
name: Serna, Francisco
name: Sosa-Calvo, Jeffrey
name: Lattke, John
name: Rabeling, Christian
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Sericomyrmex
Sericomyrmex mayri

description: (32) Sericomyrmex mayri Forel, 1912 Figure 8E, FMaterial examined material. COLOMBIA: Antioquia • 1 worker; Amalfi; 06°46′19.2″N, 075°05′24.4″W; alt. 1550 m; 1 Jul. 1998; F. Sernaleg.; MEFLG 5901; Antioquia • 3 workers; Amalfi; 06°45′57.6″N, 075°06′25.02″W; alt. 955 m; Sep. 2006; M.A. Vanegas leg.; MEFLG 5901; Antioquia • 1 worker; Amalfi; 06°47′48.92″N, 075° 06′55.56″W; alt. 1113 m; 2 Oct. 1998; F. Sernaleg.; ME- FLG 5901; Antioquia • 3 workers; Amalfi; 06°47′48.92″N, 075°06′55.56″W; alt. 1113 m; 1997; F. Sernaleg.; MEFLG 5901; Antioquia • 1 worker; San Carlos; 06°11′29″N, 074°59′43″W; alt. 1036 m; 05 Jan. 2007; N. Vergara, C. Gómez leg.; UNAB 4774; Sucre • 3 workers; Ovejas; 09°32′4.1″N, 075°13′18.5″W; alt. 277 m; 4 Feb. 2016; H. Cadena leg.; MEFLG 40894, 40893, 40892. Identification. Large species; head broad; frontal lobe narrow; mandible usually striate; frontal carina often in- complete; eye flat to mildly convex; posterior cephalic margin shallow, abruptly to gradually impressed; poste- rior cephalic corner usually angled; mesosomal tubercles low and obtuse; and gaster with lateral carina well-devel- oped, dorsal carina absent or faint (Ješovnik and Schultz 2017). Distribution.Sericomyrmex mayri has been recorded from Bolivia, the northern states of Brazil, Colombia, Ecuador, Peru, and Venezuela. In Central America, S. mayri is only known in Panama (Forel 1912; Ješovnik and Schultz 2017).
description: Published as part of Mera-Rodríguez, Daniela, Serna, Francisco, Sosa-Calvo, Jeffrey, Lattke, John & Rabeling, Christian, 2020, A checklist of the non-leaf-cutting fungus-growing ants (Hymenoptera, Formicidae) from Colombia, with new biogeographic records, pp. 1205-1227 in Check List 16 (5) on page 1219, DOI: 10.15560/16.5.1205, http://zenodo.org/record/4059086
description: {"references": ["Forel A (1912) Formicides neotropiques. Part I. Annales de la Societe Entomologique de Belgique 56: 28 - 49.", "Jesovnik A, Schultz TR (2017) Revision of the fungus-farming ant genus Sericomyrmex Mayr (Hymenoptera, Formicidae, Myrmicinae). ZooKeys 670: 1 - 109. https: // doi. org / 10.3897 / zookeys. 670. 11839"]}
Novel Stenotrophomonas maltophilia Bacteriophage as Potential Therapeutic Agent
Creators: name: Fanaei Pirlar, Rima
name: Wagemans, Jeroen
name: Kunisch, Fabian
name: Lavigne, Rob
name: Trampuz, Andrej
name: Gonzalez Moreno, Mercedes
Publisher: name: Charité - Universitätsmedizin Berlin
Year: 2022
Subjects: subject: Stenotrophomonas maltophilia
subject: antibiotic resistance
subject: biofilm-associated infection
subject: bacteriophage-antibiotic combination
subject: isothermal microcalorimetry
subject: 600 Technik, Medizin, angewandte Wissenschaften::610 Medizin und Gesundheit::610 Medizin und Gesundheit

description: A novel bacteriophage CUB19 specific to the bacterial species Stenotrophomonas maltophilia was isolated from hospital sewage and characterized as a new species belonging to a proposed new phage genus 'Cubvirus' (Caudoviricetes). Its genome contains a total of 48,301 bp and 79 predicted genes, among which some have been associated with packaging and lysis-associated proteins, structural proteins, or DNA- and metabolism-associated proteins. No lysogeny-associated proteins or known virulence proteins were identified on the phage genome. CUB19 showed stability over a wide range of temperatures (-20 degrees C-60 degrees C) and pH values (pH 3-pH 13). Despite its narrow host range, this phage has potent observed antimicrobial and antibiofilm activity. A time-killing curve assay showed significant biofilm reduction after 24 h exposure to CUP19. Isothermal microcalorimetry assays investigating phage-antibiotic combinations revealed the effectiveness of CUB19 during co-administration with increasing antibiotic doses, regardless of the administration approach (simultaneous or staggered). These are encouraging indications for its application as a targeted therapeutic agent against resilient biofilm-associated Stenotrophomonas infections.
Relativity on Rotated Graph Paper
Creators: name: Salgado, Roberto B.
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Classical Physics (physics.class-ph)
subject: Physics Education (physics.ed-ph)
subject: Popular Physics (physics.pop-ph)
subject: FOS: Physical sciences

description: We present visual calculations in special relativity using spacetime diagrams drawn on graph paper that has been rotated by 45 degrees. The rotated lines represent lightlike directions in Minkowski spacetime, and the boxes in the grid (called "light-clock diamonds") represent units of measurement modeled on the ticks of an inertial observer's lightclock. We show that many quantitative results can be read off a spacetime diagram by counting boxes, using a minimal amount of algebra. We use the Doppler Effect, in the spirit of the Bondi k-calculus, to motivate the method.
description: 30 pages, 17 figures. For an earlier approach, see arXiv:physics/0505134v1
The Do-loop Considered Harmful in Production System Programming
Creators: name: Biema, Michael Van
name: Miranker, Daniel P.
name: Stolfo, Salvatore
Publisher: name: Columbia University
Year: 1986
Subjects: Computer science

description: In this paper we focus on some aspects of Expert System programming. In particular we consider some of the language constructs which from part of a new production system language known as Herbal that we are developing at Columbia University. These language constructs greatly increase the expressiveness of a typical production system language and can be efficiently executed on a para11el machine. We briefly describe the DADO machine under development at Columbia University and J basic algorithm for production system execution for that machine. We conclude with a discussion of some performance Statistics recently calculated from m _analysis of production systems simulations and describe the expected effects of our added language constructs on these statistics.
Tablets as an Option for Telemedicine—Evaluation of Diagnostic Performance and Efficiency in Intracranial Arterial Aneurysm Detection
Creators: name: Can, Elif
name: Gebert, Pimrapat
name: Sodemann, Elisa Birgit
name: Kolck, Johannes
name: Walter-Rittel, Thula Canon
name: Maaßen, Anna
name: Güttler, Christopher
name: Stöckel, Juliane
name: Bohner, Georg
name: Böning, Georg
Publisher: name: Charité - Universitätsmedizin Berlin
Year: 2022
Subjects: subject: telemedicine
subject: teleradiology
subject: diagnostic performance
subject: intracranial arterial aneurysm detection
subject: 600 Technik, Medizin, angewandte Wissenschaften::610 Medizin und Gesundheit::610 Medizin und Gesundheit

description: Purpose: To evaluate a commercially available mobile device for the highly specialized task of detection of intracranial arterial aneurysm in telemedicine. Methods: Six radiologists with three different levels of experience retrospectively interpreted 60 computed tomography (CT) angiographies for the presence of intracranial arterial aneurysm, among them 30 cases with confirmed positive findings. Each radiologist reviewed the angiography datasets twice: once on a dedicated medical-grade workstation and on a commercially available mobile consumer-grade tablet with an interval of 3 months. Diagnostic performance, reading efficiency and subjective scorings including diagnostic confidence were analyzed and compared. Results: Diagnostic performance was comparable on both devices regardless of readers' experience, and no significant differences in sensitivity (66-87.5%) and specificity (79.4-87%) were found. Results obtained with tablets and medical workstations were also comparable in terms of subjective assessment across all reader groups. Conclusions: There was no significant difference between tablet and workstation readings of angiography datasets for the presence of intracranial arterial aneurysm. Sensitivity, specificity, efficiency and subjective scorings were similar with the two devices for all three reader groups. While medical workstations are 10 times more expensive, tablets allow higher mobility especially for radiologists on call.
Magnetic vortex-antivortex crystals generated by spin-polarized current
Creators: name: Gaididei, Yuri
name: Volkov, Oleksii M.
name: Kravchuk, Volodymyr P.
name: Sheka, Denis D.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study vortex pattern formation in thin ferromagnetic films under the action of strong spin-polarized currents. Considering the currents which are polarized along the normal of the film plane, we determine the critical current above which the film goes to a saturated state with all magnetic moments being perpendicular to the film plane. We show that stable square vortex-antivortex superlattices (\emph{vortex crystals}) appears slightly below the critical current. The melting of the vortex crystal occurs with current further decreasing. A mechanism of current-induced periodic vortex-antivortex lattice formation is proposed. Micromagnetic simulations confirm our analytical results with a high accuracy.
description: 12 pages, 11 figures
The binary fraction in the globular cluster M10 (NGC 6254): comparing core and outer regions
Creators: name: Dalessandro, E.
name: Lanzoni, B.
name: Beccari, G.
name: Sollima, A.
name: Ferraro, F. R.
name: Pasquato, M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We study the binary fraction of the globular cluster M10 (NGC 6254) as a function of radius from the cluster core to the outskirts, by means of a quan- titative analysis of the color distribution of stars relative to the fiducial main sequence. By taking advantage of two data-sets, acquired with the Advanced Camera for Survey and the Wide Field Planetary Camera 2 on board the Hubble Space Telescope, we have studied both the core and the external regions of the cluster. The binary fraction is found to decrease from 14% within the core, to 1.5% in a region between 1 and 2 half-mass radii from the cluster centre. Such a trend and the derived values are in agreement with previous results ob- tained in clusters of comparable total magnitude. The estimated binary fraction is sufficient to account for the suppression of mass segregation observed in M10, without any need to invoke the presence of an intermediate-mass black hole in its centre.
description: Accepted for publication in ApJ (22 pages, 7 figures, 3 tables)
Fast Heuristic and Exact Algorithms for Two-Level Hazard-Free Logic Minimization
Creators: name: Theobald, Michael
name: Nowick, Steven M.
Publisher: name: Columbia University
Year: 1998
Subjects: Computer science

description: None of the available minimizers for 2-level hazard-free logic minimization can synthesize very large circuits. This limitation has forced researchers to resort to manual and automated circuit partitioning techniques. This paper introduces two new 2-level logic minimizers:ESPRESSO-HF, a heuristic method which is loosely based on ESPRESSO-II, and IMPYMIN, an exact method based on implicit data structures. Both minimizers can solve all currently available examples, which range up to 32 inputs and 33 outputs.These include examples that have never been solved before.For examples that can be solved by other minimizers our methods are several orders of magnitude faster. As by-products of these algorithms, we also present two additional results. First, we introduce a fast new algorithm to check if a hazard-free covering problem can feasibly be solved. Second, we introduce a novel formulation of the 2-level hazard-free logic minimization problem by capturing hazard-freedom constraints within a synchronous function by adding new variables.
Experiences with Indigenous Education in College: Stories from the Early Childhood Education Classroom
Creators: name: Kinzel, Cheryl A.
Publisher: name: Graduate Studies
Year: 2018
Subjects: subject: Indigenous Knowledges
subject: Early Childhood Education
subject: Reconciliation
subject: Calls to Action
subject: Critical Pedagogy
subject: Transformative Learning
subject: Adult Learning
subject: Education--Adult and Continuing
subject: Education--Community College
subject: Education--Curriculum and Instruction
subject: Education--Early Childhood
subject: Education--Higher
subject: Education--Teacher Training
subject: Literature--Canadian (English)

description: Drawing from socio-constructivism, I work from the qualitative methodological approach of narrative inquiry through storytelling, oriented by critical pedagogy and informed by Indigenous methodology, in order to understand non-Indigenous adult learner perspectives in how Indigenous ways of being, knowing, and doing were experienced in the early childhood education (ECE) program at an urban post-secondary college in western Canada. Exploration and analysis of these stories through the lens of critical pedagogy and within a storytelling approach helped identify the participants’ initial transformative learning experiences with Indigenous knowledges and Reconciliation. Critical reflection on these themes led to the identification of several key findings: 1) the promise of transformative learning may be found in the students’ initial reflections en route to, 2) understanding reconciliation as an acceptance of the truths and realities of Canadian history, and 3) the necessity of experiencing Indigenous knowledges. Through the metaphor of building a nest, I see the promise of transformative learning as the foundation, or the sticks and twigs of this nest. The work of Reconciliation provides the string and the mud that, although messy, with perseverance can bind this nest together. Finally, Indigenous knowledges, or Indigenous ways of being, knowing, and doing, represent the contextual feathers that line this nest and provide a place of comfort.
Mesoscale symmetries explain dynamical equivalence of food webs
Creators: name: Aufderheide, Helge
name: Rudolf, Lars
name: Gross, Thilo
Publisher: name: arXiv
Year: 2012
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: A present challenge in complex systems is to identify mesoscale structures that have distinct dynamical implications. In this paper we present a detailed investigation of a previously observed dynamical equivalence of certian ecological food webs. We show that this equivalence is rooted in mesoscale symmetries that exist in these webs. Certain eigenvectors of the Jacobian describing dynamical modes of the system, such as specific instabilities or responses to perturbations, localize on these symmetric motifs. On the one hand this means that by removing a symmetry from the network one obtains a system which has identical dynamics except for the removal of the localized mode. This explains the previously observed equivalence. On the other hand it means that we can identify dynamical modes that only depend on the symmetric motif. Symmetric structures thus provide an example for mesoscale network motifs having distinct and exact implications for the dynamics.
description: 8 pages, 3 figures
Atmospheric Contributions to Global Ocean Tides for Satellite Gravimetry
Creators: name: Balidakis, Kyriakos
name: Sulzbach, Roman
name: Shihora, Linus
name: Dahle, Christoph
name: Dill, Robert
name: Dobslaw, Henryk
Publisher: name: Freie Universität Berlin
Year: 2022
Subjects: subject: atmospheric tides
subject: ocean tides
subject: de‐aliasing
subject: GRACE‐FO
subject: ERA5
subject: atmospheric forcing
subject: 500 Naturwissenschaften und Mathematik::550 Geowissenschaften, Geologie::550 Geowissenschaften

description: To mitigate temporal aliasing effects in monthly mean global gravity fields from the GRACE and GRACE‐FO satellite tandem missions, both tidal and non‐tidal background models describing high‐frequency mass variability in atmosphere and oceans are needed. To quantify tides in the atmosphere, we exploit the higher spatial (31 km) and temporal (1 hr) resolution provided by the latest atmospheric ECMWF reanalysis, ERA5. The oceanic response to atmospheric tides is subsequently modeled with the general ocean circulation model MPIOM (in a recently revised TP10L40 configuration that includes the feedback of self‐attraction and loading to the momentum equations and has an improved bathymetry around Antarctica) as well as the shallow water model TiME (employing a much higher spatial resolution and more elaborate tidal dissipation than MPIOM). Both ocean models consider jointly the effects of atmospheric pressure variations and surface wind stress. We present the characteristics of 16 waves beating at frequencies in the 1–6 cpd band and find that TiME typically outperforms the corresponding results from MPIOM and also FES2014b as measured from comparisons with tide gauge data. Moreover, we note improvements in GRACE‐FO laser ranging interferometer range‐acceleration pre‐fit residuals when employing the ocean tide solutions from TiME, in particular, for the S1 spectral line with most notable improvements around Australia, India, and the northern part of South America.
Treatment options, complications and long‐term outcomes for limb fractures in pet rabbits
Creators: name: Hetterich, Johannes
name: Joos, Diana
name: Beyerbach, Martin
name: Cigler, Pia
name: Hackenbroich, Christian
name: Hatt, Jean‐Michel
name: Müller, Kerstin
name: Thöle, Milena
name: Fehr, Michael
name: Reuschel, Maximilian
Publisher: name: Freie Universität Berlin
Year: 2023
Subjects: subject: fracture
subject: orthopaedics
subject: rabbit
subject: radiography
subject: trauma
subject: 600 Technik, Medizin, angewandte Wissenschaften::630 Landwirtschaft::630 Landwirtschaft und verwandte Bereiche

description: Background Limb fractures represent the most common orthopaedic disease in pet rabbits. However, only a few studies have evaluated therapeutic details of limb fractures. There are no data available for long‐term outcomes of limb fracture treatment. Methods The medical records of six institutions were reviewed retrospectively to identify cases of traumatic limb bone fractures in pet rabbits between 1999 and 2020. The medical records (n = 387) were analysed for details of fracture prevalence, aetiology, therapy protocols, treatment complications, outcome and long‐term effects. In addition to the retrospective data evaluation, 13 rabbits were re‐evaluated in person in recent clinical analyses, including orthopaedic examination, radiography and computed‐tomographic imaging. Details of long‐term effects of fracture treatment were requested over the telephone for a further 232 animals using a standardised questionnaire. Results Long bone fractures accounted for the majority of all fractures (296/387; 76.5%). Hindlimb fractures (301/387; 77.7%) were more common than forelimb fractures (86/387; 22.2%), and tibial fractures and combined fractures of the tibia and fibula (119/387; 30.8%) were observed most frequently. Most fracture treatments were based on osteosynthesis procedures (243/328; 74.1%). Treatment complications occurred in 130 out of 328 (39.6%) cases. A high bodyweight (p = 0.047) and an older age (p = 0.01) were found to be significant risk factors for the emergence of therapy complications. Overall, 75.4% of animals (175/232) had a satisfactory long‐term outcome. Limb posture anomalies were evaluated in 61 cases (26.3%). Limitations The multi‐centre approach led to the inclusion of various institutions, veterinarians, treatment protocols and rabbit populations that might have influenced the results. The medical records were reviewed retrospectively, so there were some data that were lacking or could not be collected in a standardised manner. Furthermore, rabbit owners' evaluation of long‐term outcomes might be prone to error, despite the use of a standardised interview questionnaire. Conclusion Limb fractures are a common orthopaedic issue in pet rabbits. The patient's bodyweight and age are significant risk factors for the emergence of complications during the fracture treatment process. Long‐term orthopaedic effects, such as abnormal limb posture and permanent lameness of the affected limb, were observed regularly.
Colorado water, May/June 2014
Creators: name: Middleton, Lindsey A.
name: Colorado Water Institute, Publisher
Publisher: name: Mountain Scholar
Year: 2014
Subjects: subject: Water resources development -- Colorado
subject: Water use -- Colorado
subject: Water-supply -- Colorado
subject: Water-supply -- Management -- Colorado

description: The newsletter is devoted to enhancing communication between Colorado water users and managers and faculty at the state's research universities.
description: Newsletter of the Water Center of Colorado State University. Theme: Student research.
Testing nonstandard cosmological models with SNLS3 supernova data and other cosmological probes
Creators: name: Li, Zhengxiang
name: Wu, Puxun
name: Yu, Hongwei
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate the implications for some nonstandard cosmological models using data from the first three years of the Supernova Legacy Survey (SNLS3), assuming a spatially flat universe. A comparison between the constraints from the SNLS3 and those from other SN Ia samples, such as the ESSENCE, Union2, SDSS-II and Constitution samples, is given and the effects of different light-curve fitters are considered. We find that SN Ia with SALT2 or SALT or SIFTO can give consistent results and the tensions between different data sets and different light-curve fitters are obvious for fewer-free-parameters models. At the same time, we also study the constraints from the SNLS3 along with data from the cosmic microwave background and the baryonic acoustic oscillations (CMB/BAO), and the latest Hubble parameter versus redshift (H(z)). Using model selection criteria such as $χ^2$/dof, GoF, AIC and BIC, we find that, among all the cosmological models considered here ($Λ$CDM, constant $w$, varying $w$, DGP, modified polytropic Cardassian, and the generalized Chaplygin gas), the flat DGP is favored by the SNLS3 alone. However, when additional CMB/BAO or H(z) constraints are included, this is no longer the case, and the flat $Λ$CDM becomes preferred.
description: 24 pages, 12 figures and 4 tables, version to be published in ApJ
Higher rank Killing tensors and Calogero model
Creators: name: Galajinsky, Anton
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: (n+2)-dimensional Lorentzian spacetime which admits irreducible Killing tensors of rank up to n is constructed by applying the Eisenhart lift to the Calogero model.
description: V2: 12 pages, discussion extended, presentation improved, references added. The version to appear in PRD
Apterostigma Mayr 1865
Creators: name: Mera-Rodríguez, Daniela
name: Serna, Francisco
name: Sosa-Calvo, Jeffrey
name: Lattke, John
name: Rabeling, Christian
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Apterostigma

description: (18) Apterostigma sp. 3, pilosum species-group Material examined. COLOMBIA: Antioquia • 1 worker; Medellín; 06°15′44.4″N, 075°34′33.4″W; alt. 1460 m; May 1999; MEFLG members leg.; MEFLG 5786. Comment. This new Apterostigma species is only known from a single worker and will be described in a forthcoming taxonomic treatment.
description: Published as part of Mera-Rodríguez, Daniela, Serna, Francisco, Sosa-Calvo, Jeffrey, Lattke, John & Rabeling, Christian, 2020, A checklist of the non-leaf-cutting fungus-growing ants (Hymenoptera, Formicidae) from Colombia, with new biogeographic records, pp. 1205-1227 in Check List 16 (5) on page 1213, DOI: 10.15560/16.5.1205, http://zenodo.org/record/4059086
Magnons and crystal field transitions in hexagonal REMnO3 (RE = Er, Tm, Yb, Lu) single crystals
Creators: name: Standard, E. C.
name: Stanislavchuk, T.
name: Sirenko, A. A.
name: Lee, N.
name: Cheong, S. -W.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Far-infrared optical transmission spectra of the antiferromagnetic resonances, or magnons, and crystal field transitions have been studied in hexagonal REMnO3 (RE = Er, Tm, Yb, Lu) single crystals. The magnon and CF frequencies, their oscillator strengths, and effective g-factors have been measured using external magnetic fields up to 9 T in the temperature range between 1.5 K and 100 K. The magnon frequency increases systematically with a decrease of the RE ion radius. The magnetic ordering of RE ions (RE=Er, Tm, Yb) was observed at low temperatures T<3.5 K and in strong external magnetic fields. The observed effects are analyzed taking into account main magnetic interactions in the system including exchange of the Mn3+ spins with RE3+ paramagnetic moments.
description: submitted to Phys. Rev. B 9 figures, one Table
Cyphomyrmex major Forel 1901
Creators: name: Mera-Rodríguez, Daniela
name: Serna, Francisco
name: Sosa-Calvo, Jeffrey
name: Lattke, John
name: Rabeling, Christian
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Cyphomyrmex
Cyphomyrmex major

description: (24) Cyphomyrmex major (Forel, 1901) Figure 6G, HMaterial examined. COLOMBIA: Antioquia • 3 gynes, 4 workers; Turbo; 08°05′53″N, 076°43′54″W; alt. 1 m; 15 Sep. 2004; O. Munar leg.; UNAB 2353; Santander • 4 gynes, 4 workers; Santa Helena del Opon; 06°20′00″N, 073°36′00″W; alt. 1426 m; Apr. 2012; A. Ardila leg.; UNAB 2526. Identification. Mid-pronotal tubercle paired; cephalic posterolateral corner produced as broad lobe, not spinelike; frontal carina extending onto top lobe joining pos- terior carina; and anterior mesonotal tubercle high and obtuse (Snelling and Longino 1992). Distribution.Cyphomyrmex major is known from Boli- via, Brazil (Amazonas, Rio Grande do Sul, Paraná, and São Paulo), Colombia, Costa Rica, Nicaragua, Panama, and Venezuela (Kempf 1972; Santos et al. 2017; Fernán- dez and Serna 2019).
description: Published as part of Mera-Rodríguez, Daniela, Serna, Francisco, Sosa-Calvo, Jeffrey, Lattke, John & Rabeling, Christian, 2020, A checklist of the non-leaf-cutting fungus-growing ants (Hymenoptera, Formicidae) from Colombia, with new biogeographic records, pp. 1205-1227 in Check List 16 (5) on page 1215, DOI: 10.15560/16.5.1205, http://zenodo.org/record/4059086
description: {"references": ["Snelling RR, Longino JT (1992) Revisionary notes on the fungusgrowing ants of the genus Cyphomyrmex, rimosus group (Hymenoptera: Formicidae: Attini). In: Quintero D, Aiello A (Eds) Insects of Panama and Mesoamerica: selected studies. Oxford University Press, Oxford, 479 - 494.", "Kempf WW (1972) Catalogo abreviado das formigas da regiao neotro- pical (Hymenoptera: Formicidae). Studia Entomologica 15: 1 - 344.", "Santos Rde J, Koch EBA, Leite CMP, Porto TJ, Delabie JHC (2017) An assessment of leaf-litter and epigaeic ants (Hymenoptera: Formicidae) living in different landscapes of the Atlantic Forest Bi- ome in the State of Bahia, Brazil. Journal of Insect Biodiversity 5 (19): 1 - 19. https: // doi. org / 10.12976 / jib / 2017.5.19", "Serna F, Mera-Rodriguez LD, Ramirez-Ossa K, Gaigl A (2019) Hor- migas de mayor impacto en la agricultura colombiana. In: Fer- nandez F, Guerrero RJ, Delsinne T (Eds) Hormigas de Colombia. Universidad Nacional de Colombia, Bogota, 1115 - 1149."]}
Cryptfs: A Stackable Vnode Level Encryption File System
Creators: name: Badulescu, Ion
name: Shender, Alex
name: Zadok, Erez
Publisher: name: Columbia University
Year: 1998
Subjects: Computer science

description: Data encryption has become an increasingly important factor in everyday work. Users seek a method of securing their data with maximum comfort and minimum additional requirements on their part; they want a security system that protects any files used by any of their applications, without resorting to application-specific encryption methods. Performance is an important factor to users since encryption can be time consuming. Operating system vendors want to provide this functionality but without incurring the large costs of developing a new file system. This paper describes the design and implementation of Cryptfs -- a file system that was designed as a stackable Vnode layer loadable kernel module. Cryptfs operates by 'encapsulating' a client file system with a layer of encryption transparent to the user. Being kernel resident, Cryptfs performs better than user-level or NFS based file servers such as CFS and TCFS. It is 2 to 37 times faster on micro-benchmarks such as read and write; this translates to 12-52\%application speedup, as exemplified by a large build. Cryptfs offers stronger security by basing its keys on process session IDs as well as user IDs, and by the fact that kernel memory is harder to access. Working at and above the vnode level, Cryptfs is more portable than a file system which works directly with native media such as disks and networks. Cryptfs can operate on top of any other native file system such as UFS/FFS and NFS. Finally, Cryptfs requires no changes to client file systems or remote servers.
The Spin of Holographic Electrons at Nonzero Density and Temperature
Creators: name: Herzog, Christopher P.
name: Ren, Jie
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the Green's function of a gauge invariant fermionic operator in a strongly coupled field theory at nonzero temperature and density using a dual gravity description. The gravity model contains a charged black hole in four dimensional anti-de Sitter space and probe charged fermions. In particular, we consider the effects of the spin of these probe fermions on the properties of the Green's function. There exists a spin-orbit coupling between the spin of an electron and the electric field of a Reissner-Nordstrom black hole. On the field theory side, this coupling leads to a Rashba like dispersion relation. We also study the effects of spin on the damping term in the dispersion relation by considering how the spin affects the placement of the fermionic quasinormal modes in the complex frequency plane in a WKB limit. An appendix contains some exact solutions of the Dirac equation in terms of Heun polynomials.
description: 27 pages, 11 figures; v2: minor changes, published version
Telomere length and dynamics in Hutchinson-Gilford progeria syndrome
Creators: name: Decker, Michelle Leanna
Publisher: name: University of British Columbia
Year: 2011

description: Hutchinson-Gilford Progeria Syndrome (HGPS) is a premature aging disorder caused by mutations in the gene LMNA, which encodes the nuclear matrix protein, Lamin A. Lamin A is found predominantly at the nuclear periphery but also throughout the nucleus in a ‘nucleoplasmic veil’. The majority of HGPS patients have a single nucleotide mutation (1824 C→T) which results in the activation of a cryptic donor splice site causing a 150 nucleotide deletion in the mRNA and consequently a 50 amino acid in-frame deletion in the protein. The mutation results in aberrant processing and nuclear localization of the Lamin A protein. HGPS cells are characterized by misshapen nuclei, chromatin disorganization, accumulation of mutant Lamin A, short telomeres, DNA damage recruitment defect and early senescence. To measure the telomere length of individual chromosomes, Quantitative Fluorescence in-situ Hybridization was used. The average telomere length in HGPS fibroblasts was greatly decreased compared to controls as well as highly variable. In contrast, the telomere length in hematopoietic cells which do not express LMNA was within the normal range for three out of four HGPS patient samples. These results suggest that mutant Lamin A decreases telomere length via a direct effect and that expression of mutant LMNA is necessary for telomere loss in HGPS. Three different aspects of telomere biology were investigated: localization, mobility and attachment to the matrix. Telomeres were more localized to the nuclear periphery in HGPS fibroblasts than in wild type fibroblasts as well as having abnormal localization in regards to euchromatin/heterochromatin. To examine mobility, fluorescently tagged proteins were constructed to examine interactions between wild type and mutant Lamin A and telomeres during live cell imaging. Long telomeres in cells with the mutant protein did not move the same distance as those in wild type cells. Mutant Lamin A did not bind DNA with the same affinity as the wild type Lamin A did. These investigations show that telomeres and telomere dynamics are altered in HGPS cells. This is likely contributing to aspects of the pathology of the disease and would need to be taken into consideration in any therapeutic approach.
Colorado water, August 1993
Creators: name: Miller, Shirley
name: Colorado Water Resources Research Institute, Publisher
Publisher: name: Mountain Scholar
Year: 1993
Subjects: subject: Water resources development -- Colorado
subject: Water-supply -- Colorado
subject: Water use -- Colorado
subject: Water-supply -- Management -- Colorado

description: The scope of the newsletter is devoted to enhancing communication between Colorado water users and managers and faculty at the research universities in the state.
description: Newsletter of the Colorado Water Resources Research Institute.
XMM-Newton view of Swift J1834.9-0846 and its Magnetar Wind Nebula
Creators: name: Younes, George
name: Kouveliotou, Chryssa
name: Kargaltsev, Oleg
name: Pavlov, George G.
name: Gogus, Ersin
name: Wachter, Stefanie
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We report on the analysis of two XMM-Newton observations of the recently discovered soft gamma repeater Swift J1834.9-0846, taken in September 2005 and one month after the source went into outburst on 2011 August 7. We performed timing and spectral analyses on the point source as well as on the extended emission. We find that the source period is consistent with an extrapolation of the Chandra ephemeris reported earlier and the spectral properties remained constant. The source luminosity decreased to a level of 1.6x10^34 erg s^-1 following a decay trend of $\propto t^{-0.5}$. Our spatial analysis of the source environment revealed the presence of two extended emission regions around the source. The first (Region A) is a symmetric ring around the point source, starting at 25arcsec and extending to ~50arcsec. We argue that Region A is a dust scattering halo. The second (Region B) has an asymmetrical shape extending between 50arcsec and 150arcsec, and is detected both in the pre- and post-outburst data. We argue that this region is a possible magnetar wind nebula (MWN). The X-ray efficiency of the MWN with respect to the rotation energy loss is substantially higher than those of rotation powered pulsars: $η_{\rm X}\equiv L_{\rm MWN,0.5-8 keV}/\dot{E}_{\rm rot}\approx0.7$. The higher efficiency points to a different energy source for the MWN of Swift J1834.9-0846, most likely bursting activity of the magnetar, powered by its high magnetic field, B=1.4x10^14 G.
description: 10 pages, 10 figures, accepted for publication in ApJ
User-Oriented Explanation for Expert Systems
Creators: name: McKeown, Kathleen
Publisher: name: Columbia University
Year: 1983
Subjects: Computer science

description: In this project we are concerned with extending the range and effectiveness of explanation facilities currently available in knowledge-based expert systems by incorporating the full power of natural language techniques. As expert systems become larger and more sophisticated, it is important that they be able to communicate their reasoning effectively to their users, whether they be naive users, domain experts, or system maintainers, thus allowing them to evaluate advice the system provides, one main problem with current explanation facilities is the inability to adequately tailor an explanation to a particular user of the system. In this project, we are examining the effects of the user and discourse situation on the type of explanation provided. In particular, we are interested In developing capabilities for providing re-explanations when the user is dissatisfied with an explanation, for providing explanations in an appropriate level of detail for a given user, for adapting the explanation to the point of view the user has taken, and for using a persuasive strategy that the user is likely to accept. These efforts require the development of a semantically rich representation of the domain, capable of supporting abstractions and different points of view; the investigation of strategies that are effectively used for justification and causal explanation; and a development of the influences on level of detail, strategy selected, and point of view. We expect the results of this research to be both practical and theoretical they will improve- the range of man-machine communication currently available, making expert systems more accessible to their users, and will improve our understanding of how appropriate explanations can be produced.
Cubic and non-cubic multiple-q states in the Heisenberg antiferromagnet on the pyrochlore lattice
Creators: name: Okubo, Tsuyoshi
name: Nguyen, Trung Hai
name: Kawamura, Hikaru
Publisher: name: arXiv
Year: 2011
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The ordering of the classical Heisenberg model on the pyrochlore lattice with the antiferromagnetic nearest-neighbor interaction J1 and the ferromagnetic next-nearest-neighbour interaction J2 is investigated by means of a mean-field analysis and a Monte Carlo simulation. For a moderate J2/J1-value, the model exhibits a first-order transition into an incommensurate multiple-q ordered state where multiple Bragg peaks coexist in the spin structure factor. We show that there are two types of metastable multiple-q states, a cubic symmetric sextuple-q state and a non-cubic symmetric quadruple-q state. Based on a Monte Carlo simulation, we find that the cubic sextuple-q state appears just below the first-order transition temperature, while another transition from the cubic sextuple-q state to the non-cubic quadruple-q state occurs at a lower temperature.
description: 17 pages, 13 figuares
Grün's Theorems and Class Groups
Creators: name: Lemmermeyer, Franz
Publisher: name: arXiv
Year: 2011
Subjects: subject: Number Theory (math.NT)
subject: Group Theory (math.GR)
subject: FOS: Mathematics

description: In this article we show how Grün's results in group theory can be used for studying the structure of class groups in normal extensions.
Colorado water, May/June 2018
Creators: name: Mokry, Melissa
name: Colorado Water Institute, Publisher
Publisher: name: Mountain Scholar
Year: 2018
Subjects: subject: Water resources development -- Colorado
subject: Water use -- Colorado
subject: Water-supply -- Colorado
subject: Water-supply -- Management -- Colorado

description: The newsletter is devoted to highlighting water research and activities at CSU and throughout Colorado.
description: Newsletter of the Colorado Water Center. Theme: Student research.