cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Microfluidic In Situ Measurement of Poisson's Ratio of Hydrogels
Creators: name: Cappello, Jean
name: d'Herbemont, Vincent
name: Lindner, Anke
name: Roure, Olivia du
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Being able to precisely characterize the mechanical properties of soft microparticles is essential for numerous situations from the understanding of the flow of biological fluids to the development of soft micro-robots. Here we present a simple measurement technique for the Poisson's ratio of soft micron-sized hydrogels in the presence of a surrounding liquid. This methods relies on the measurement of the deformation in two orthogonal directions of a rectangular hydrogel slab compressed uni-axially inside a microfluidic channel. Due to the in situ character of the method, the sample does not need to be dried, allowing for the measurement of the mechanical properties of swollen hydrogels. Using this method we determine the Poisson's ratio of hydrogel particles composed of polyethylene glycol (PEG) and varying solvents fabricated using a lithography technique. The results demonstrate with high precision the dependence of the hydrogel compressibility on the solvent fraction and character. The method, easy to implement, can be adapted for the measurement of a variety of soft and biological materials.
Sexual Orientation, Discrimination, and Suspect Classifications : The Case for Applying Heightened Scrutiny to United States v. Windsor
Creators: name: Rademacher, Elizabeth
Publisher: name: American University (Washington, D.C.)
Year: 2023
Subjects: classificationCode: 44
subject: Human society
classificationCode: 4405
subject: Gender studies
classificationCode: 4408
subject: Political science
subject: FOS: Political science

description: Description to be added
Sharing and Space‐Commoning Knowledge Through Urban Living Labs Across Different European Cities
Creators: name: Petrescu, Doina
name: Cermeño, Helena
name: Keller, Carsten
name: Moujan, Carola
name: Belfield, Andrew
name: Koch, Florian
name: Goff, Denise
name: Schalk, Meike
name: Bernhardt, Floris
Publisher: name: Universität Kassel
Year: 2022
Subjects: subject: heterogeneous neighbourhoods
subject: ProSHARE
subject: R-Urban
subject: situated knowledges
subject: spatial knowledge
subject: translocal learning
subject: urban commons
subject: urban living lab
subject: 300
subject: 720
subject: Europa
subject: Räumliches Wissen
subject: Erkenntnistheorie
subject: Gemeinwohl
subject: Stadtentwicklung
subject: Stadtplanung
subject: Gemeineigentum

description: Gefördert durch den Publikationsfonds der Universität Kassel
The Spectrum of the Dirac Operator on Coset Spaces with Homogeneous Gauge Fields
Creators: name: Dolan, Brian P.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The spectrum and degeneracies of the Dirac operator are analysed on compact coset spaces when there is a non-zero homogeneous background gauge field which is compatible with the symmetries of the space, in particular when the gauge field is derived from the spin-connection. It is shown how the degeneracy of the lowest Landau level in the recently proposed higher dimensional quantum Hall effect is related to the Atiyah-Singer index theorem for the Dirac operator on a compact coset space.
description: 25 pages, typeset in LaTeX, uses youngtab.sty
Nanoscale Probing of Broken-Symmetry States in Graphene Induced by Individual Atomic Impurities
Creators: name: Zhang, Yu
name: Guo, Qi-Qi
name: Li, Si-Yu
name: He, Lin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Inherent symmetries of a system lead to multiple degeneracies of its energy spectra. Introducing individual atomic impurities can locally break these symmetries, which is expected to lift the degenerate degrees of freedom around the impurities. Although central to our understanding of the fundamental properties of solids, the broken-symmetry states induced by individual atomic impurities have so far eluded observation. Here, we report nanoscale probing of the broken-symmetry states in graphene induced by two types of individual atomic impurities, i.e., isolated nitrogen dopants and isolated hydrogen atoms chemisorbed on graphene. Our experiments demonstrate that both types of atomic impurities can locally break sublattice symmetry of graphene and generate valley-polarized states, which extends several nanometers around the impurities. For the isolated hydrogen atom chemisorbed on graphene, the enhanced spin-orbit coupling, which arises from the sp3 distortion of graphene due to the hydrogen chemisorption, further lifts the spin degeneracy, resulting in a fully spin and valley polarized states within about 1 nm around the hydrogen atom. Our result paves the way to control various broken-symmetry states at the nanoscale by various atomic impurities.
A Consistent Food Demand Framework for International Food Security Assessment
Creators: name: Meade, Birgit
name: Rosen, Stacey
name: Beghin, John
name: Meade, Birgit
name: Rosen, Stacey
name: Beghin, John
Publisher: name: Unknown
Year: 2015
Subjects: subject: Food Security and Poverty
subject: International Development
subject: Research Methods/ Statistical Methods
subject: International food security
subject: PIGLOG demand
subject: aggregation
subject: income inequality
subject: food prices
subject: shocks
subject: roots and tubers
subject: grain

description: A parsimonious demand modeling approach has been developed for the annual USDA-ERS International Food Security Assessment to be fully implemented in 2016. The approach incorporates price effects, variation in food quality across income deciles, and consistent aggregation over income deciles and food qualities. The approach is based on a simple PIGLOG demand approach for four food categories: corn, other grains, roots and tubers, and “all other” foods. The framework exhibits desirable characteristics obtained via calibration: food “quality” within a food group increases with income (e.g., from simple wheat flour purchased by poor households to commercial baked goods purchased by higher income groups); price and income responses become less sensitive with increasing income; and increasing income inequality decreases average per capita food consumption. The proposed modeling approach is illustrated for Tanzania. The new calibrated model will be able to identify the unique impacts of income, prices, and exchange rates on food consumption, i.e. potential sources of food insecurity.
title: Trace - tree rings in archaeology, climatology and ecology
title: proceedings of the Dendrosymposium 2007, May 3rd - 6th 2007, Riga, Latvia
titleType: AlternativeTitle
Creators: name: Elferts, Didzis
Publisher: name: GFZ, Helmholtz-Gemeinschaft, Potsdam
Year: 2008

description: report
Energy-time complexity of algorithms : modelling the trade-offs of CMOS VLSI
Creators: name: Bingham, Brad D
Publisher: name: University of British Columbia
Year: 2011

description: Power consumption has become one of the most critical concerns for processor design. Parallelism offers a pathway to increased performance under power constraints — many slow processors can complete a parallel implementation of a task using less time and less energy than a fast uniprocessor. This relies on the energy-time trade-offs present in CMOS circuits, including voltage scaling. Understanding these trade-offs and their connection with algorithms will be a key for extracting performance in future multicore processor designs. I propose simple models for analysing algorithms and deriving lower bounds that reflect the energy-time trade-offs and parallelism of CMOS circuits. For example, the models constrain computational elements to lie in a two-dimensional topology. These elements, called processing elements (PEs), compute arbitrary functions of a constant number of input bits and store a constant-bounded memory. PEs are used to implement wires; thus subsuming and accounting for communication costs. Each operation of a PE takes time t and consumes energy e, where eta remains invariant for some fixed α > 0. Not only may different PEs independently trade time for energy in this way, but the same PE may vary the trade-off on an operation by operation basis. Using these models, I derive lower bounds for the ETα costs of sorting, addition and multiplication, where E and T are the total energy and time, and present algorithms that meet these bounds asymptotically. Clearly there exist many algorithms to solve each of these problems, and furthermore there are many choices of how to implement them with processing elements. Fortunately, the tight asymptotic bounds collapse the hierarchy of algorithms, implementations and schedules. This demonstrates that choosing other algorithms or layout schemes may only improve the energy-time "cost" by constant factors. In addition to analysing energy-time optimal algorithms for these problems, I also determine the complexity of many other well-established algorithms. This sheds light on the relative energy-time efficiency of these algorithms, revealing that some "fast" algorithms exploit free communication of traditional computation models. I show that energy-time minimal algorithms are not the same as those that minimize operation count or the computation depth.
An assessment of the gender gap in African agricultural research capacities
Creators: name: Beintema, Nienke
name: Beintema, Nienke
Publisher: name: Unknown
Year: 2017
Subjects: subject: Labor and Human Capital
subject: Teaching/Communication/Extension/Profession
subject: Agricultural research
subject: gender
subject: indicators
subject: female researchers

description: Female researchers offer different insights from their male counterparts, and their input provides an important perspective in addressing the unique and pressing challenges of female farmers. Consequently, it is important that agricultural research agencies employ a balance of male and female researchers. Statistics on sex-disaggregated capacity trends are needed to enable decision-makers to set priorities and benchmarks and to monitor progress. New evidence collected through Agricultural Science and Technology Indicators(ASTI) shows that the gender gap in African agricultural research, although still substantial, continued to decline. In some countries, however, the participation of women in agricultural research continues to be extremely low. Furthermore, female researchers are often young and less qualified than their male colleagues. Although the ASTI evidence provides some useful insights, this article argues that more detailed information is needed to ensure that gender issues are better and more effectively taken into consideration in policy formulation for and implementation of agricultural research issues.
title: The astrophysics of energetic x-ray binaries
Creators: name: Ogley, Richard Neil
Publisher: name: The Open University
Year: 1999

description: This thesis is a study of the X-ray binary Cygnus X-3, and related objects, using primarily observations at radio, sub-rom and infrared wavelengths. I find the emission mechanism to be synchrotron in the radio and sub-mm, while the infrared emission is thermal from the hot wind. The upper limit to the synchrotron emission is interpreted as being due to spectral ageing and implies a magnetic field strength of 7 T at a distance of 700 Rʘ from the centre of the system.

The nature of the companion star in Cyg X-3 was investigated by midinfrared observations using the ISO satellite. I find that the spectrum shows a steady decrease and flattening at longer wavelengths which is consist ant with a standard wind emission. Thus the complete quiescent spectrum from Cyg X-3 shows two different emission mechanisms and covers a full 5 decades of frequency.

High sensitivity and high time resolution radio photometry, taken during a minor flare period, reveal rapid (10 minute) increases and decreases in intensity which severely constrain the size of plasmons. Brightness temperatures of typically 1010K are found.

I also consider models for the superluminal expansion and contraction of the Cyg X-3 source, observed on a milli-arcsecond scale by LIewell et al. (1998). The elliptical shape and the superluminal contraction are particularly hard to explain. Models involving photon beams illuminating shells, or propagating photon patterns are the most plausible.

A thorough survey for maser emission from these sources has produced strong upper limits and improved our understanding of the circumstellar environment ofCyg X-3.

This thesis has probed the radio-jet X-ray binaries, and made significant advances, opening up more questions about the nature of these sources and new areas of research.
Monte Carlo Study of the Spin-1 Baxter-Wu Model
Creators: name: Costa, M. L. M.
name: Plascak, J. A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: The two-dimensional spin-1 Baxter-Wu model is studied by using Monte Carlo simulations. The standard single-spin-flip Metropolis algorithm is used to generate the configurations from which the order parameter, specific heat and magnetic susceptibility are measured. The finite-size scaling procedure is employed in order to get the critical behavior. The extensive simulations shown that the critical exponents are different from those of the spin-1/2 model suggesting that the spin-1 model is in a different universality class.
description: 3 pages, 3 figures, 1 table
Comparing episodic and semantic interfaces for task boundary identification
Creators: name: Safer, Izzet
Publisher: name: University of British Columbia
Year: 2011

description: Multi-tasking is a common activity for computer users. Many recent approaches to help support a user in multi-tasking require the user to indicate the start (and at least implicitly) end points of tasks manually. Although there has been some work aimed at inferring the boundaries of a user's tasks, it is not yet robust enough to replace the manual approach. Unfortunately with the manual approach, a user can sometimes forget to identify a task boundary, leading to erroneous information being associated with a task or appropriate information being missed. These problems degrade the effectiveness of the multi-tasking support. In this thesis, we describe two interfaces we designed to support task boundary identification. One interface stresses the use of episodic memory for recalling the boundary of a task; the other stresses the use of semantic memory. We investigate these interfaces in the context of software development. We report on an exploratory study of the use of these two interfaces by twelve programmers. We found that the programmers determined task boundaries more accurately with the episodic memory-based interface and that this interface was also strongly preferred.
Asymptotic analysis of a contact Hele-Shaw problem in a thin domain
Creators: name: Mel'nyk, Taras
name: Vasylyeva, Nataliya
Publisher: name: arXiv
Year: 2020
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: Primary 35R35, 35B40, Secondary 76D27, 76A20

description: We analyze the contact Hele-Shaw problem with zero surface tension of a free boundary in a thin domain $Ω^{\varepsilon}(t).$ Under suitable conditions on the given data, the one-valued local classical solvability of the problem for each fixed value of the parameter $\varepsilon$ is proved. Using the multiscale analysis, we study the asymptotic behavior of this problem as $\varepsilon \to 0,$ i.e., when the thin domain $Ω^{\varepsilon}(t)$ is shrunk into the interval $(0, l).$ Namely, we find exact representation of the free boundary for $t\in[0,T],$ derive the corresponding limit problem $(\varepsilon= 0),$ define other terms of the asymptotic approximation and prove appropriate asymptotic estimates that justify this approach. We also establish the preserving geometry of the free boundary near corner points for $t\in[0,T]$ under assumption that free and fixed boundaries form right angles at the initial time $t=0$.
description: 28 pages, 1 figure
title: The experience of space in relation to architecture in the Homeric epics
Creators: name: Theodorou, Maria
Publisher: name: The Open University
Year: 1998

description: Is there a concept of space 'before' philosophy? The thesis addresses a question which is relevant to contemporary architectural theory but it attempts an answer through the examination of the Homeric text. The general relevance of this is because the Homeric text may be said to be historical antecedent to the development of philosophy. Therefore it provides the possibility for a different understanding of space. What makes the Homeric text a kind of text-case is that it predates the concept of space itself - in the sense of Platonic chora 'receptacle', that is, space as container. Our reading of the Homeric text is goverried by an attempt to reconstruct the possible experiences of spatial relations as they are conveyed by the Homeric discourse. The thesis concentrates upon central Homeric terms chore/os, domos, thure, megaron and thalamos, in order to analyse them in terms of the experiences of which they were an element. This involves a close analysis of the Homeric text. But this reading faces two major obstacles in the attempt to restore the historical and specific character of the Homeric categories. These two obstacles are different sides of the coin 'anachronism'. One major form of anachronism is to permit the philosophical definition of space and of architectural elements to define the Homeric relations whereas those relations actually predate and may be thought to be independent of philosophy. The second obstacle to this reading is aspects of philosophy which has systematically reduced the independence of the Homeric text by allowing terms to be defined by philosophy and then projected backwards as Homeric reading.
Callilepis nocturna
Creators: name: Isaia, Marco
name: Paschetta, Mauro
name: Chiarle, Alberto
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Gnaphosidae
Callilepis
Callilepis nocturna

description: Callilepis nocturna (Linnaeus, 1758)
NEW DATA. — Valdieri: pathway to Pian del Valasco, Alpine scree, 1300-1764 m, 29. VI.2009, 1♀ (MRSN); pathway to Pian del Valasco, beech forest near stream, 1500-2000 m, 29. VI.2009, 1♂; Pian del Valasco, Alpine pasture with rocks, 1764 m, 11-12.VII.2009 (pitfall traps), 2♂, 1♀; southern slope of Monte Bourel, Vallone della Meris, Sant’Anna di Valdieri, Alpine prairies with rocky debris, 1500-2300 m, 1-31.VIII.2011 (pitfall traps), 1♂.
 LITERATURE. — Paschetta et al. (2013).
CHOROTYPE. — PAL.
MACROHABITAT. — Alpine pastures, Alpine prairies, riparian habitats, rocky lands.
description: Published as part of Isaia, Marco, Paschetta, Mauro & Chiarle, Alberto, 2015, Annotated checklist of the spiders (Arachnida, Araneae) of the Site of Community Importance and Special Area of Conservation " Alpi Marittime " (NW Italy), pp. 57-114 in Zoosystema 37 (1) on page 94, DOI: 10.5252/z2015n1a4, http://zenodo.org/record/4577680
The benefits of both worlds: Towards an integrated mixed-methods approach for evaluating women’s empowerment
Creators: name: Mentz, Melody
name: Mentz, Melody
Publisher: name: Unknown
Year: 2017
Subjects: subject: Labor and Human Capital
subject: Research Methods/ Statistical Methods
subject: Mixed-methods analysis
subject: empowerment
subject: evaluation methodologies
subject: women in agriculture

description: Increasing demands for credible, rigorous monitoring and evaluation of empowerment in the context of development will challenge theorists and practitioners to find innovative, but credible ways of understanding empowerment. This paper provides a theoretical rationale for, and a practical description of an integrated mixed-methods approach for evaluating the empowerment contributions of the African Women in Agricultural Research and Development program. The paper explores the value of employing mixed-methods for increasing the credibility of results, and for improving understanding of the ways in which the program facilitates change for its participants. This paper assesses the process of data integration and analysis to provide a set of practical recommendations for practitioners seeking to employ similar approaches. The paper finds that managerial commitments, adequate investment in ongoing monitoring and evaluation activities, and openness to methodological innovation are essential for the effective development and use of mixed-method approaches in complex development interventions
Effect of Resonant Continuum on Pairing Correlations in the Relativistic Approach
Creators: name: Cao, Li-Gang
name: Ma, Zhong-Yu
Publisher: name: arXiv
Year: 2003
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: A proper treatment of the resonant continuum is to take account of not only the energy of the resonant state, but also its width. The effect of the resonant states on pairing correlations is presented based on the relativistic mean field theory plus Bardeen-Cooper-Schrieffer(BCS) approximation with a constant pairing strength. The study is performed in an effective Lagrangian with the parameter set NL3 for neutron rich even-even Ni isotopes. The results show that the contribution of the proper treatment of the resonant continuum to pairing correlations for those nuclei close to neutron drip line is important. The pairing gaps, Fermi energies, pairing correlation energies, and binding energies are considerably affected with a proper consideration of the width of resonant states. The problem of an unphysical particle gas, which may appear in the calculation of the traditional mean field plus BCS method for nuclei in the vicinity of drip line could be well overcome when the pairing correlation is performed by using the resonant states instead of the discretized states in the continuum.
description: 19 pages, 8 Postscript figure
Designing effective leadership capacity development programs for women agricultural researchers in Africa
Creators: name: Bomett, Pauline
name: Wangalachi, Anne
name: Bomett, Pauline
name: Wangalachi, Anne
Publisher: name: Unknown
Year: 2017
Subjects: subject: Labor and Human Capital
subject: Teaching/Communication/Extension/Profession
subject: Leadership
subject: capacity
subject: African women scientists
subject: gender
subject: gender parity
subject: agricultural research and development

description: African women scientists face complex workplace and socio-cultural barriers in their quest to advance to top positions. The African Women in Agricultural Research and Development program executed a tailored leadership development program to empower women scientists through enhancing their knowledge of organizational contexts, skills in negotiation, collaboration, conflict management, and leadership. This study presents a mixed-methods evaluation of the effectiveness of the program. Results from the analysis show that the program is particularly effective in improving the capacity of participants to present themselves confidently and professionally, to access and leverage networks effectively and to mentor other scientists. Eighty-four percent of fellows had triangulated evidence (from qualitative and quantitative data) of change in their leadership capacity. The program played a central role in effecting these changes for 81 percent of fellows. The article concludes with recommendations for the design of leadership development programs for female scientists.
The kinematics of globular cluster populations in the E-MOSAICS simulations and their implications for the assembly history of the Milky Way
Creators: name: Trujillo-Gomez, Sebastian
name: Kruijssen, J. M. Diederik
name: Reina-Campos, Marta
name: Pfeffer, Joel L.
name: Keller, Benjamin W.
name: Crain, Robert A.
name: Bastian, Nate
name: Hughes, Meghan E.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a detailed comparison of the Milky Way (MW) globular cluster (GC) kinematics with the 25 Milky Way-mass cosmological simulations from the E-MOSAICS project. While the MW falls within the kinematic distribution of GCs spanned by the simulations, the relative kinematics of its metal-rich ($[\rm{Fe/H}]>-1.2$) versus metal-poor ($[\rm{Fe/H}]8\rm{kpc}$) populations are atypical for its mass. To understand the origins of these features, we perform a comprehensive statistical analysis of the simulations, and find 18 correlations describing the assembly of $L^*$ galaxies and their dark matter haloes based on their GC population kinematics. The correlations arise because the orbital distributions of accreted and in-situ GCs depend on the masses and accretion redshifts of accreted satellites, driven by the combined effects of dynamical fraction, tidal stripping, and dynamical heating. Because the kinematics of in-situ/accreted GCs are broadly traced by the metal-rich/metal-poor and inner/outer populations, the observed GC kinematics are a sensitive probe of galaxy assembly. We predict that relative to the population of $L^*$ galaxies, the MW assembled its dark matter and stellar mass rapidly through a combination of in-situ star formation, more than a dozen low-mass mergers, and $1.4\pm1.2$ early ($z=3.1\pm1.3$) major merger. The rapid assembly period ended early, limiting the fraction of accreted stars. We conclude by providing detailed quantitative predictions for the assembly history of the MW.
description: 24 pages, 20 figures. Published in MNRAS
Building science skills to improve the contributions of women to agricultural research and development in Sub-Saharan Africa
Creators: name: Mukhebi, Dorothy
name: De Villiers, Santie
name: Okoth, Sheila
name: Wilde, Vicki
name: Nkwake, Apollo M.
name: Mukhebi, Dorothy
name: De Villiers, Santie
name: Okoth, Sheila
name: Wilde, Vicki
name: Nkwake, Apollo M.
Publisher: name: Unknown
Year: 2017
Subjects: subject: Labor and Human Capital
subject: Teaching/Communication/Extension/Profession
subject: Science skills development
subject: agricultural research and development
subject: capacity building
subject: innovations
subject: gender

description: Building the capacity of African women scientists to raise their contributions to agricultural research and development is critical to ensuring food security in sub-Saharan Africa. The African Women in Agricultural Research and Development program developed a tailored capacity development program to contribute to this. We discuss the rationale and theory of change for the program, as well as the extent to which participants demonstrated science-related outcomes, including capabilities to: conduct research, conduct gender responsive research, fundraise, and to present research findings. This paper evaluates the effectiveness of the program on a sample of 122 women. Results show increased capacity on each of the outcomes from before to after the program. Most participants (93 percent) indicated that program played a strong role in the changes they experienced. Qualitative analysis confirmed this in all the cases. Key lessons for the design and implementation of women's science capacity development programs are highlighted.
Drassodes pubescens
Creators: name: Isaia, Marco
name: Paschetta, Mauro
name: Chiarle, Alberto
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Gnaphosidae
Drassodes
Drassodes pubescens

description: Drassodes pubescens (Thorell, 1856)
NEW DATA. — Vernante: Palanfrè, Gias della Luia, Alpine pasture, 1600 m, 3.VII.2010, 2♂, 1♀, leg. B. Rizzioli.
 LITERATURE. — Isaia et al. (2007); Paschetta et al. (2013).
CHOROTYPE. — PAL.
MACROHABITAT. — Alpine pastures, rocky lands.
 Drassodes thaleri Hervé & Rollard, 2009 (Fig. 16)
NEW DATA. — Valdieri: along the path to Monte Matto, Alpine scree, 2500-3088 m, 27.VI.2011, 1♀; southern slope of Monte Bourel, Vallone della Meris, Sant’Anna di Valdieri, Alpine prairies with rocky debris, 1500-2300 m, 1-31.VIII.2011 (pitfall traps), 2♀; surroundings of Lago Inferiore di Valscura, Alpine scree, 2300 m, 8.VII.2011, 1♂.
CHOROTYPE. — ALSW.
MACROHABITAT. — Alpine prairies, rocky lands.
NOTES. — New record for Italy.
description: Published as part of Isaia, Marco, Paschetta, Mauro & Chiarle, Alberto, 2015, Annotated checklist of the spiders (Arachnida, Araneae) of the Site of Community Importance and Special Area of Conservation " Alpi Marittime " (NW Italy), pp. 57-114 in Zoosystema 37 (1) on page 95, DOI: 10.5252/z2015n1a4, http://zenodo.org/record/4577680
Extinction due to amorphous carbon grains in red quasars from the SDSS
Creators: name: Czerny, B.
name: Li, J.
name: Loska, Z.
name: Szczerba, R.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We construct a quasar extinction curve based on the blue and red composite quasar spectra of Richards et al. (2003) prepared from the SDSS survey. This extinction curve does not show any traces of the 2200 A feature characteristic of the Interstellar Medium, and this indicates that graphite grains are likely absent close to quasar nuclei. The extinction is best modeled by AC amorphous carbon grains, assuming a standard distribution of grain sizes (p=3.5) but slightly larger minimum grain size (a_{min} = 0.016 microns) and lower maximum grain size (a_{min} = 0.12 microns) than the respective canonical values for the interstellar medium. The dust composition is thus similar to that of the dust in AGB stars. Since graphite grains form from amorphous carbon exposed to strong UV irradiation the results indicate that either the dust forms surprisingly far from the active nucleus or in a wind that leaves the nucleus quickly enough to avoid crystallization into graphite.
description: MNRAS (in press)
The role of genetic factors in modulating ageing-related cognitive change
Creators: name: Pan, Gongbu
Publisher: name: University of Tasmania
Year: 2024

description: Alzheimer’s disease (AD) is the major form of dementia. Previous genome wide association studies (GWAS) have indicated that 21 genetic variants contribute to polygenic risk associated with AD as well as Apolipoprotein E (APOE) and brainderived neurotrophic factor (BDNF). Ageing is the major risk factor for AD; however, the relationship between AD-related polygenic risk scores (ADPRS) – computed by AD-related genes identified by GWAS, APOE, BDNF and cognitive changes during brain ageing is unclear. APOE, the strongest genetic factor of AD risk, and BDNF, a gene encoding a multifunction growth factor, are two of the most widely studied genes in relation to cognitive function, but their interactive association with longitudinal change in cognitive function is less studied. We used data from the Tasmanian Healthy Brain Project (TBHP) - an ongoing longitudinal prospective study of healthy older adults who underwent periodic assessment of neuropsychological status and health. This thesis investigated whether APOE and BDNF polymorphisms independently or interactively influence changes in cognitive function (episodic memory, working memory, executive function, language processing) over 36 months in healthy older adults. This thesis also determined the relationship between polygenic risk scores for Alzheimer’s disease with ageing-related changes in cognitive function as well as whether the polygenic risk scores for Alzheimer’s disease are associated with the trajectory of cognitive function in older adults. Five major results were identified by statistical analyses based on linear mixed-effects models (Chapter 2 APOE and BDNF analyses based on 36-month data; Chapters 3-4 ADPRS analyses based on 60-month data). First, in older adults, APOE ε4 was positively associated with episodic memory changes over 36 months. Second, APOE ε4 moderated the effect of BDNF on changes in language processing over 36 months. Third, over 60 months, there was a positive association between the ADPRS (excluding APOE and BDNF) and changes in working memory/executive function, particularly in APOE ε4+ carriers. Similarly, BDNF Met allele may moderate the effect of ADPRS on changes in executive function. Then, two to three distinct groups, including at least 10% of individuals with different trajectory shapes, were identified for four major cognitive domains by using Group-based trajectory modelling. The ADPRS was not associated with the distinctive ageing-related trajectories of cognitive function. These results strongly support that APOE, BDNF, polygenic risk and gene-gene interactions play an important role in ageing-related changes in cognitive function.
Linearization of holomorphic families of algebraic automorphisms of the affine plane
Creators: name: Kuroda, Shigeru
name: Kutzschebauch, Frank
name: Pełka, Tomasz
Publisher: name: arXiv
Year: 2020
Subjects: subject: Algebraic Geometry (math.AG)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 14R20, 32M05 (Primary) 14R10, 32M17, 32Q56 (Secondary)

description: Let $G$ be a reductive group. We prove that a family of polynomial actions of $G$ on $\mathbb{C}^2$, holomorphically parametrized by an open Riemann surface, is linearizable. As an application, we show that a particular class of reductive group actions on $\mathbb{C}^3$ is linearizable. The main step of our proof is to establish a certain restrictive Oka property for groups of equivariant algebraic automorphisms of $\mathbb{C}^2$.
description: 14 pages, to appear in Transformation Groups
Strengthening mentoring partnerships for African women scientists in the agricultural research and development system in sub-Saharan Africa
Creators: name: Mukhebi, Dorothy
name: Otunga, Evelyne
name: Mentz, Melody
name: Wangalachi, Anne
name: Mukhebi, Dorothy
name: Otunga, Evelyne
name: Mentz, Melody
name: Wangalachi, Anne
Publisher: name: Unknown
Year: 2017
Subjects: subject: Labor and Human Capital
subject: Teaching/Communication/Extension/Profession
subject: Women
subject: scientists
subject: mentoring
subject: partnership
subject: empowerment
subject: gender
subject: sub-Saharan Africa

description: The contribution of women to development is particularly important to the agricultural sector in Sub-Saharan Africa where women constitute a large proportion of smallholder farmers. Despite their important role, the participation of women in agricultural research, particularly at the leadership level, remains low. This paper explores the role of mentoring in increasing the pool of women in agricultural research using the case of the African Women in Agricultural Research and Development program. The paper elaborates on evidence collected over a three-year period to evaluate program effectiveness, benefits accrued and key success factors. Results show that the program's structured approach has direct career benefits for mentors and mentees. Furthermore, the program has proven effective in increasing gender responsiveness for mentors, particularly males, increasing their probability of serving as champions within institutions. Four discrete factors for successful mentoring were identified: commitment, shared research interests, proximity and personality. The paper concludes with recommendations for program design.
A problematic microfossil from the Oligocene of Rott (Siebengebirge, Germany), with affinities to freshwater Bryozoan Statoblasts (Phylactolaemata)
Creators: name: Kohring, Rolf
name: Reitner, Joachim
Publisher: name: Fachbereich Geowiss., FU Berlin
Year: 1991

description: research
Groups of locally-flat disk knots and non-locally-flat sphere knots
Creators: name: Friedman, Greg
Publisher: name: arXiv
Year: 2004
Subjects: subject: Geometric Topology (math.GT)
subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 57Q45, 57N80

description: The classical knot groups are the fundamental groups of the complements of smooth or piecewise-linear (PL) locally-flat knots. For PL knots that are not locally-flat, there is a pair of interesting groups to study: the fundamental group of the knot complement and that of the complement of the ``boundary knot'' that occurs around the singular set, the set of points at which the embedding is not locally-flat. If a knot has only point singularities, this is equivalent to studying the groups of a PL locally-flat disk knot and its boundary sphere knot; in this case, we obtain a complete classification of all such group pairs in dimension $\geq 6$. For more general knots, we also obtain complete classifications of these group pairs under certain restrictions on the singularities. Finally, we use spinning constructions to realize further examples of boundary knot groups.
description: to appear in the Journal of Knot Theory and Its Ramifications; see also http://math.yale.edu/~friedman
Nearly Century-scale Variation of the Sun's Radius
Creators: name: Hiremath, K. M.
name: Rozelot, J. P.
name: Sarp, V.
name: Kilcik, A.
name: G., Pavan D.
name: Gurumath, Shashanka R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The Kodaikanal Archive Program (India) is now available to the scientific community in digital form as daily digitized solar white light pictures, from 1923 to 2011. We present here the solar radius data, obtained after a painstaking effort to remove all effects that contribute to the error in their measurements (limb darkening, distortion of the objective lens, refraction, other instrumental effects, etc.). These data were analyzed to reveal any significant periodic variations, after applying a multi-taper method with red noise approximation and the Morlet wavelet transform analysis. After removing obvious periodic variations (such as solar rotation and Earth annual rotation), we found a possible cycle variation at 11.4 yr, quasi biennial oscillations at 1.5 and 3.8 yr, and Rieger-type periodicity at ~159, 91, and 63 days. Another ~7.5 yr periodicity (as a mean) resulting from two other main periodicities detected at 6.3-7.8 yr can be identified as an atmospheric component. The detrending data show, over a mean radius of 959".7 +/- 0".7, a residual of less than ~(-)1 mas over the time period of analysis: if not spurious, this estimate indicates a faint decline, but probably confirms more the constancy of the solar diameter during the considered ranging time, within instrumental and methodological limits. The Kodaikanal long quality observations contribute to international efforts to bring past solar data measurements to the community to further explore issues, for instance, those of the luminosity/radius properties that could be used to pinpoint the "seat of the solar cycle."
Effect of crystallography and temperature on the development of quartz high-angle grain boundaries in metamorphic rocks
Creators: name: Liebl, Christoph
name: Kuntcheva, Boriana
name: Kruhl, Jörn H.
name: Kunze, Karsten
Publisher: name: Universitätsverlag Göttingen
Year: 2006

description: Grain boundary migration during dynamic recrystallization of quartz results in grain boundary suturing of various extent. The geometry of the sutured boundaries is affected not only by temperature, strain rate, finite strain and differential stress, but also by internal properties such as the defect distribution and crystallographic orientations. Consequently, the grain boundary geometry may provide information about these conditions and properties. In continuation of a previous study (Kuntcheva et al.) the complete crystallographic orientation of quartz grain boundaries was measured, based on a combination of electron backscatter diffraction (EBSD) and universal-stage (U-stage) measurements. For this purpose a sample of granite from the northern Aar Massif (Central Alps, Switzerland) was taken, deformed at temperatures up to 300–350°C at the end of the Lepontine event of the Alpine Orogenesis...
description: conference
Drassodex simoni Herve, Roberts & Murphy 2009
Creators: name: Isaia, Marco
name: Paschetta, Mauro
name: Chiarle, Alberto
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Gnaphosidae
Drassodex
Drassodex simoni

description: Drassodex simoni Hervé, Roberts & Murphy, 2009
NEW DATA. — Entracque: Vallone del Sabbione, pathway to Colle del Sabbione, on rocky slopes, 2000 m, 25.VII.2009, 1♀ (MRSN), leg. F. La Pietra & S. Birindelli; Valdieri: along the path to Monte Matto, Alpine scree, 2500-3088 m, 27.VI.2011, 2♀.
CHOROTYPE. — ALPW.
MACROHABITAT. — Rocky lands.
NOTES. — New record for Italy.
description: Published as part of Isaia, Marco, Paschetta, Mauro & Chiarle, Alberto, 2015, Annotated checklist of the spiders (Arachnida, Araneae) of the Site of Community Importance and Special Area of Conservation " Alpi Marittime " (NW Italy), pp. 57-114 in Zoosystema 37 (1) on page 95, DOI: 10.5252/z2015n1a4, http://zenodo.org/record/4577680
SU(3) truncated Wigner approximation for strongly interacting Bose gases
Creators: name: Nagao, Kazuma
name: Takasu, Yosuke
name: Takahashi, Yoshiro
name: Danshita, Ippei
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We develop and utilize the SU(3) truncated Wigner approximation (TWA) in order to analyze far-from-equilibrium quantum dynamics of strongly interacting Bose gases in an optical lattice. Specifically, we explicitly represent the corresponding Bose--Hubbard model at an arbitrary filling factor with restricted local Hilbert spaces in terms of SU(3) matrices. Moreover, we introduce a discrete Wigner sampling technique for the SU(3) TWA and examine its performance as well as that of the SU(3) TWA with the Gaussian approximation for the continuous Wigner function. We directly compare outputs of these two approaches with exact computations regarding dynamics of the Bose--Hubbard model at unit filling with a small size and that of a fully-connected spin-1 model with a large size. We show that both approaches can quantitatively capture quantum dynamics on a timescale of $\hbar/(Jz)$, where $J$ and $z$ denote the hopping energy and the coordination number. We apply the two kinds of SU(3) TWA to dynamical spreading of a two-point correlation function of the Bose--Hubbard model on a square lattice with a large system size, which has been measured in recent experiments. Noticeable deviations between the theories and experiments indicate that proper inclusion of effects of the spatial inhomogeneity, which is not straightforward in our formulation of the SU(3) TWA, may be necessary.
description: 21 pages, 8 figures
On the nature of small amplitude peaks in $δ$ Scuti oscillation spectra
Creators: name: Daszynska-Daszkiewicz, J.
name: Dziembowski, W. A.
name: Pamyatnykh, A. A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The standard assumption in interpretation of stellar oscillation spectra from photometry is that the excited mode have low angular degrees, typically $\ell< 3$. Considering the case of FG Vir, the $δ$ Scuti star with the richest known oscillation spectrum, we show that this assumption is not justified for low amplitude peaks. The $\ell<3$ identifications have been found for 12 dominant peaks from pulsation amplitudes and phases. However, we show that for the rest of the peaks (55), whose amplitudes are typically below 1 mmag, much higher $\ell$'s are most likely. We argue that improving amplitude resolution to the micromagnitude level, as expected from space observations, is not likely to be rewarded with a credible mode identifications because the spectra will be dominated by high-$\ell$ modes of unknown azimuthal order, $m$.
description: 4 pages, 6 figures, to appear in the proceedings of the Workshop "Stellar pulsation and evolution", 2005. Monte Porzio Catone, Italy. Eds.: A. R. Walker and G. Bono
Phase diagram and isotope effects of the quasi-one-dimensional electron gas coupled to phonons
Creators: name: Bindloss, Ian P.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Using a multistep renormalization group method, we study the low-temperature phases of the interacting one-dimensional (1D) electron gas coupled to phonons. We obtain analytic expressions for the weak-coupling quantum phase boundaries of the 1D extended Holstein-Hubbard model and the 1D extended Peierls-Hubbard model for general band-filling and phonon frequency. Away from half-filling, the phase diagrams are characterized by a delicate competition between spin density wave, charge density wave, and superconducting orders. We study the dependence of the ground state on the electron-phonon (el-ph) and electron-electron (el-el) coupling strengths, the screening length, electron bandwidth, phonon frequency, doping, and type of phonon. Unlike the case in Fermi liquids, in 1D the el-ph coupling is strongly renormalized, often to stronger values. Even when the bare phonon-induced attraction is weak compared to the bare el-el repulsion, a small amount of retardation can cause the renormalized el-ph interaction to dominate the problem. We find cases in which a repulsive el-el interaction enhances the superconducting susceptibility in the presence of a retarded el-ph interaction. The spin gap and superconducting susceptibility are found to be strongly dependent on the deviation from half-filling (doping). In some cases, the superconducting susceptibility varies nonmonotonically with doping and exhibits a maximum at a particular doping. For a quasi-1D array of weakly coupled, fluctuating 1D chains, the superconducting transition temperature T_c also exhibits a maximum as a function of doping. The effect of changing the ion mass (isotope effect) on T_c is found to be largest near half-filling and to decrease rapidly with doping.
description: Published version; 18 pages, 20 figures
Non-equilibrated post freeze out distributions
Creators: name: Magas, V. K.
name: Anderlik, A.
name: Anderlik, Cs.
name: Csernai, L. P.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We discuss freeze out on the hypersurface with time-like normal vector, trying to answer how realistic is to assume thermal post freeze out distributions for measured hadrons. Using simple kinetic models for gradual freeze out we are able to generate thermal post FO distribution, but only in highly simplified situation. In a more advanced model, taking into account rescattering and re-thermalization, the post FO distribution gets more complicated. The resulting particle distributions are in qualitative agreement with the experimentally measured pion spectra. Our study also shows that the obtained post FO distribution functions, although analytically very different from the Juttner distribution, do look pretty much like thermal distributions in some range of parameters.
description: 14 pages, 2 figures, EPJ style, submitted to EPJ C