cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Iron-based superconductors: tales from the nuclei
Creators: name: Carretta, Pietro
name: Prando, Giacomo
Publisher: name: arXiv
Year: 2019
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: High-temperature superconductivity in Fe-based pnictides and chalcogenides has been one of the most significant recent discoveries in condensed matter physics and has attracted remarkable attention in the last decade. These materials are characterized by a complex fermiology and, as a result, feature a wide range of electronic properties as a function of different tuning parameters such as chemical doping, temperature and pressure. Along the path towards the comprehension of the physical mechanisms underlying this rich phenomenology, NMR (nuclear magnetic resonance) and NQR (nuclear quadrupole resonance) have played a role of capital importance that we review in this work. In particular, we address how NMR has contributed to the current understanding of the main regions of the electronic phase diagram of Fe-based pnictides, that is, the -- sometimes coexisting -- antiferromagnetic spin-density wave and superconducting states. We evidence the unique capability of NMR as local-probe technique of investigating the effect of quenched disorder and chemical impurities. Then, we review the NMR signatures of low-frequency fluctuations associated with the development of electronic nematicity as well as with the motion of superconducting flux lines. Finally, we discuss recent contributions of NMR and NQR which evidence an intrinsically inhomogeneous electronic charge distribution as well as an orbitally-selective behaviour.
description: Review article, accepted for publication in "La Rivista del Nuovo Cimento"
Farm-Retail Price Spreads for Cotton Products
Creators: name: Parr, Kathryn
name: Parr, Kathryn
Publisher: name: Unknown
Year: 1958
Subjects: subject: Crop Production/Industries
subject: Demand and Price Analysis
subject: Marketing
subject: FOS: Economics and business

description: Excerpts from the report: Consumption of cotton has declined in relation to that of other fibers in recent years but it still accounts for 65 to 70 percent of the total pounds of fibers consumed in textile mills. While in many instances the price of cotton is a small part of the total cost of cotton products, nevertheless the manufacturer must consider prices and qualities of the raw material in relation to those of alternative fibers, especially synthetics. Per capita consumption of cotton fluctuates from year to year, but in the last 5 years it has averaged about the same as in the 1920's. The higher consumption levels of the 1940 's are explained by production of cloth for the armed services. This report deals chiefly with the trend in spreads between the average composite retail cost to consumers of a group of cotton products and the return to farmers for the lint cotton from which the products were fabricated. For convenience the composite prices and spreads were computed in terms of 1 pound of cotton. Spreads are also shown for individual products for 1 year and for 3 typical products for a period of years.
The OASIS : Development of a Simplified Questionnaire for Patients with Overactive Bladder
Creators: name: Rooney, Shannon Kathleen Curling
Publisher: name: The University of British Columbia
Year: 2017

description: Overactive bladder (OAB) refers to a complex of symptoms characterized by urgency, frequency, and nocturia, with or without urge incontinence (Ellsworth, 2013a; Heesakkers, 2015). The prevalence of OAB increases with age, and primary care practitioners can expect to see patients with symptoms of OAB frequently in practice (Hou & Zimmern, 2015). This condition can negatively affect physical, sexual, psychological, domestic, and social aspects of patients’ lives, decreasing quality of life (Ellsworth, 2013a). Several questionnaires exist to evaluate OAB. However, no comprehensive questionnaire exists that evaluates patients’ responses to OAB treatment while also addressing medication side effects and lifestyle modifications. The purpose of this culminating project was to design a user-friendly, simplified, brief, patient-centered questionnaire that assesses the symptoms of OAB, quality of life concerns, and response to treatment, including medication side effects. Three separate literature reviews were completed to develop the Overactive-Bladder Assessment of Symptoms, Interventions, and Satisfaction (OASIS) questionnaire. The OASIS questionnaire was developed and adapted from pre-existing questionnaires, with the goal to have real-world application in the offices of busy healthcare clinicians, overall improving affected patients’ lives. It will be presented at the 2017 Graduate Students in Nursing Association student research symposium and distributed to Urologists and primary care practitioners for feedback on use in actual practice.
Ancylis Hubner 1825
Creators: name: Byun, Bong-Kyu
name: Yan, Shanchun
Publisher: name: Zenodo
Year: 2005
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Tortricidae
Ancylis

description: Genus Ancylis Hübner, 1825
 Ancylis Hübner, 1825: 376. Type­species: Tortrix harpana Hübner, [1799] TL: Europe.
 Members of the genus Ancylis have a narrow forewing with an elongate or falcate apex, often with a moderately large semicircular blotch or patch bordering the basal half of the dorsal margin. In the hindwing the base of M 2 is close to the base of the stalk of M 3 and Cu 1, and M 3 and Cu 1 are connate, stalked, or fused.
Male genitalia are characterized by a sclerotized lamelliform process on the medial margin of the tegumen near its junction with the vinculum; a well developed uncus, longitudinally bifurcate or reduced in some species; and broad, pendant socii. Female genitalia usually have a pair of elongate horn­shaped signa with expanded bases. The geographic distribution is the same as that of the tribe (Enarmoniini), which is worldwide. Larvae live in tubes or clumps of wrapped leaves and sometimes feed on fruit of the host plant.
description: Published as part of Byun, Bong-Kyu & Yan, Shanchun, 2005, Description of a new species, records of five previously unrecorded species, and rediscovery of a lost species in the genus Ancylis Hübner (Lepidoptera: Tortricidae) from China, pp. 17-26 in Zootaxa 1103 (1103) on page 18
Electron irradiation effects on superconductivity in PdTe$_2$: an application of a generalized Anderson theorem
Creators: name: Timmons, E. I.
name: Teknowijoyo, S.
name: Kończykowski, M.
name: Cavani, O.
name: Tanatar, M. A.
name: Ghimire, Sunil
name: Cho, Kyuil
name: Lee, Yongbin
name: Ke, Liqin
name: Jo, Na Hyun
name: Bud'ko, S. L.
name: Canfield, P. C.
name: Orth, Peter P.
name: Scheurer, Mathias S.
name: Prozorov, R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Low temperature ($\sim$ 20~K) electron irradiation with 2.5 MeV relativistic electrons was used to study the effect of controlled non-magnetic disorder on the normal and superconducting properties of the type-II Dirac semimetal PdTe$_2$. We report measurements of longitudinal and Hall resistivity, thermal conductivity and London penetration depth using tunnel-diode resonator technique for various irradiation doses. The normal state electrical resistivity follows Matthiessen rule with an increase of the residual resistivity at a rate of $\sim$0.77$ μΩ$cm/$(\textrm{C}/\textrm{cm}^2)$. London penetration depth and thermal conductivity results show that the superconducting state remains fully gapped. The superconducting transition temperature is suppressed at a non-zero rate that is about sixteen times slower than described by the Abrikosov-Gor'kov dependence, applicable to magnetic impurity scattering in isotropic, single-band $s$-wave superconductors. To gain information about the gap structure and symmetry of the pairing state, we perform a detailed analysis of these experimental results based on insight from a generalized Anderson theorem for multi-band superconductors. This imposes quantitative constraints on the gap anisotropies for each of the possible pairing candidate states. We conclude that the most likely pairing candidate is an unconventional $A_{1g}^{+-}$ state. While we cannot exclude the conventional $A_{1g}^{++}$ and the triplet $A_{1u}$, we demonstrate that these states require additional assumptions about the orbital structure of the disorder potential to be consistent with our experimental results, e.g., a ratio of inter- to intra-band scattering for the singlet state significantly larger than one. Due to the generality of our theoretical framework, we think that it will also be useful for irradiation studies in other spin-orbit-coupled multi-orbital systems.
description: 22 pages, 12 figures
67P/Churyumov-Gerasimenko - potential target for the Rosetta mission
Creators: name: Krolikowska, Malgorzata
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: An influence of the non-gravitational effects on the motion of short-period comet 67P/Churyumov-Gerasimenko is investigated. It was found that the normal component of the non-gravitational force exceeds the transverse one and a model of the motion including A_1, A_2, A_3 better fits the observations than model neglecting A_3. Assuming asymmetry in g(r) with respect to the perihelion the large value of displacement τwas derived (about 34 days), and very small negative value of transverse component A_2 was obtained. The models of rotating non-spherical nucleus also suggest the large shift of light curve with respect to perihelion (τgreater than 30 days). The forced precession model of 67P with τ= 34 days gives a prolate spheroidal shape of the rotating nucleus with axial ratio R_b/R_a = 1.16, rotational period to equatorial radius P_{rot}/R_a = 4.6\pm 1.4 hrs/km, and torque factor f_{tor}=3\cdot 10^5 day/AU. The much larger τ= 54 days gives distinctly prolate shape of nucleus with axial ratio R_b/R_a = 1.71. The orientation of spin axis of the nucleus and its evolution are presented. The past and the future dynamical evolution of comet 67P is also widely discussed.
description: 15 pages, 6 figures
Cortical surface registration using unsupervised learning
Creators: name: Cheng, Jieyu
name: Dalca, Adrian V.
name: Fischl, Bruce
name: Zollei, Lilla
Publisher: name: arXiv
Year: 2020
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences

description: Non-rigid cortical registration is an important and challenging task due to the geometric complexity of the human cortex and the high degree of inter-subject variability. A conventional solution is to use a spherical representation of surface properties and perform registration by aligning cortical folding patterns in that space. This strategy produces accurate spatial alignment but often requires a high computational cost. Recently, convolutional neural networks (CNNs) have demonstrated the potential to dramatically speed up volumetric registration. However, due to distortions introduced by projecting a sphere to a 2D plane, a direct application of recent learning-based methods to surfaces yields poor results. In this study, we present SphereMorph, a diffeomorphic registration framework for cortical surfaces using deep networks that addresses these issues. SphereMorph uses a UNet-style network associated with a spherical kernel to learn the displacement field and warps the sphere using a modified spatial transformer layer. We propose a resampling weight in computing the data fitting loss to account for distortions introduced by polar projection, and demonstrate the performance of our proposed method on two tasks, including cortical parcellation and group-wise functional area alignment. The experiments show that the proposed SphereMorph is capable of modeling the geometric registration problem in a CNN framework and demonstrate superior registration accuracy and computational efficiency. The source code of SphereMorph will be released to the public upon acceptance of this manuscript at https://github.com/voxelmorph/spheremorph.
description: cortical surface registration, deep network, unsupervised learning, registration, deep learning, cortical, spherical, invertible
From Google Maps to a Fine-Grained Catalog of Street trees
Creators: name: Branson, Steve
name: Wegner, Jan Dirk
name: Hall, David
name: Lang, Nico
name: Schindler, Konrad
name: Perona, Pietro
Publisher: name: arXiv
Year: 2019
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Up-to-date catalogs of the urban tree population are important for municipalities to monitor and improve quality of life in cities. Despite much research on automation of tree mapping, mainly relying on dedicated airborne LiDAR or hyperspectral campaigns, trees are still mostly mapped manually in practice. We present a fully automated tree detection and species recognition pipeline to process thousands of trees within a few hours using publicly available aerial and street view images of Google MapsTM. These data provide rich information (viewpoints, scales) from global tree shapes to bark textures. Our work-flow is built around a supervised classification that automatically learns the most discriminative features from thousands of trees and corresponding, public tree inventory data. In addition, we introduce a change tracker to keep urban tree inventories up-to-date. Changes of individual trees are recognized at city-scale by comparing street-level images of the same tree location at two different times. Drawing on recent advances in computer vision and machine learning, we apply convolutional neural networks (CNN) for all classification tasks. We propose the following pipeline: download all available panoramas and overhead images of an area of interest, detect trees per image and combine multi-view detections in a probabilistic framework, adding prior knowledge; recognize fine-grained species of detected trees. In a later, separate module, track trees over time and identify the type of change. We believe this is the first work to exploit publicly available image data for fine-grained tree mapping at city-scale, respectively over many thousands of trees. Experiments in the city of Pasadena, California, USA show that we can detect > 70% of the street trees, assign correct species to > 80% for 40 different species, and correctly detect and classify changes in > 90% of the cases.
Dynamical Self-assembly during Colloidal Droplet Evaporation Studied by in situ Small Angle X-ray Scattering
Creators: name: Narayanan, Suresh
name: Wang, Jin
name: Lin, Xiao-Min
Publisher: name: arXiv
Year: 2004
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The nucleation and growth kinetics of highly ordered nanocrystal superlattices during the evaporation of nanocrystal colloidal droplets was elucidated by in situ time resolved small-angle x-ray scattering. We demonstrated for the first time that evaporation kinetics can affect the dimensionality of the superlattices. The formation of two-dimensional nanocrystal superlattices at the liquid-air interface of the droplet has an exponential growth kinetics that originates from interface "crushing".
description: 4 pages, 4 figures
The Impacts of Supplemental Nutrition Assistance Program Redemptions on County-Level Employment
Creators: name: Pender, John
name: Young, Young
name: Tood, Jessica E.
name: Miller, Cristina
name: Pender, John
name: Young, Young
name: Tood, Jessica E.
name: Miller, Cristina
Publisher: name: Unknown
Year: 2019
Subjects: subject: Agricultural and Food Policy
subject: Community/Rural/Urban Development
subject: Food Consumption/Nutrition/Food Safety
subject: Food Security and Poverty
subject: Labor and Human Capital
subject: Supplemental Nutrition Assistance Program
subject: SNAP
subject: economic impacts of SNAP
subject: county employment
subject: SNAP employment impacts
subject: rural employment
subject: ARRA
subject: American Recovery and Reinvestment Act

description: This study investigates the impacts of USDA’s Supplemental Nutrition Assistance Program (SNAP) redemptions (the value of SNAP benefits redeemed by SNAP-authorized stores) on metro and nonmetro county-level employment from 2001 to 2014. SNAP redemptions had a positive average impact on county-level employment over the entire study period in nonmetro counties (about 0.4 additional job per $10,000 of additional SNAP redemptions) but no measurable impact overall in metro counties. The impacts of SNAP redemptions during and immediately after the Great Recession (2008-10) differed from impacts in nonrecession years in both nonmetro and metro counties. During the recession, an additional $10,000 of SNAP redemptions led to about 1.0 additional job on average in nonmetro counties and about 0.4 additional job in metro counties. Prior to the recession (2001-07), the SNAP impact was positive in nonmetro counties (0.2 job per $10,000) but negative in metro counties (-0.2 job per $10,000). After the recession (2011-14), SNAP redemptions had a statistically insignificant impact in both nonmetro and metro counties. Moreover, during the Great Recession, the impacts per dollar of SNAP redemptions were greater than impacts of other Federal or State government transfer payments combined and greater than the impacts of all Federal Government spending combined. SNAP redemptions also had positive effects on employment in neighboring nonmetro counties but not in neighboring metro counties. These results were robust across several econometric methods.
The Classical Solutions of the Dimensionally Reduced Gravitational Chern-Simons Theory
Creators: name: Grumiller, D.
name: Kummer, W.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The Kaluza-Klein reduction of the 3d gravitational Chern-Simons term to a 2d theory is equivalent to a Poisson-sigma model with fourdimensional target space and degenerate Poisson tensor of rank 2. Thus two constants of motion (Casimir functions) exist, namely charge and energy. The application of well-known methods developed in the framework of first order gravity allows to construct all classical solutions straightforwardly and to discuss their global structure. For a certain fine tuning of the values of the constants of motion the solutions of hep-th/0305117 are reproduced. Possible generalizations are pointed out.
description: 12 pages, 9 figures
A structural reliability approach for the management of heavy vehicle access on highway bridge networks
Creators: name: MAYER MARIO MELHEM
Publisher: name: Monash University
Year: 2020
Subjects: subject: 10404 Probability Theory
subject: FOS: Mathematics
subject: 90506 Structural Engineering
subject: FOS: Civil engineering
subject: 160510 Public Policy
subject: FOS: Political science
subject: 150205 Investment and Risk Management
subject: FOS: Economics and business

description: As larger, heavier, and more frequent heavy vehicles desire access to the road network, existing highway bridges often designed to lower notional traffic loads are the decisive factor in allowing such access. Current access decision-making is based on binary measures of safety for individual bridges that are usually subjective, uncertain, and as a result, conservative. With infrastructure funding often limited, optimised bridge utilisation is necessary. As explored in this thesis, such utilisation and rational decision-making is only achieved through probability-based frameworks providing objective measures of single bridge safety and overall bridge network risk, adopting structural reliability theory.
Ancylis melanostigma Kuznetsov 1970
Creators: name: Byun, Bong-Kyu
name: Yan, Shanchun
Publisher: name: Zenodo
Year: 2005
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Lepidoptera
Tortricidae
Ancylis
Ancylis melanostigma

description: Ancylis melanostigma Kuznetsov, 1970
(Figs. 3, 14)
 Ancylis melanostigma Kuznetsov, 1970: 436. TL: Russia (Maritime Territory, Amur, Suputinka Reservation).
 Diagnosis. This species is similar in appearance to A. amplimacula Falkovitsh but is easily distinguished by the paler subapical patch of the forewing and the long antrum, which constitutes the posterior 1/3 of the ductus bursae of the female genitalia.
Re­description. Adult: Wingspan 16 mm in female. Forewing with costa curved at base then arched towards apex, strongly arched basally, becoming gently arched apically; ground color white; basal patch dark brown, fairly broad, covering 1/3 of forewing; subapical patch indistinct, light brown; apical spot reddish brown, very small, with characteristic tiny, black, subapical costal spot. Hindwing light brown, slightly darker in outer area; cilia long, grayish brown.
Female genitalia (Fig. 14): Papillae anales slender, long. Apophyses anteriores twice as long as apophyses posteriors. Ostium bursae with antrum trumpet­shaped, representing posterior 1/3 of ductus bursae. Ductus bursae moderately long, approximately the same length as corpus bursae; ductus seminalis originating from middle of ductus bursae. Corpus bursae ovate with two, large, different­sized signa.
Material examined: [Heilongjiang] 1♀, Laoyeling, Early July 1995 (SC Yan), Genitalia slide NEFU ENT­ 95025.
Distribution. China (new record); Korea; Japan; Russia.
description: Published as part of Byun, Bong-Kyu & Yan, Shanchun, 2005, Description of a new species, records of five previously unrecorded species, and rediscovery of a lost species in the genus Ancylis Hübner (Lepidoptera: Tortricidae) from China, pp. 17-26 in Zootaxa 1103 (1103) on pages 21-22
GPU Computing with Python: Performance, Energy Efficiency and Usability
Creators: name: Holm, Håvard H.
name: Brodtkorb, André R.
name: Sætra, Martin L.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences
subject: 65Y05, 68U20

description: In this work, we examine the performance, energy efficiency and usability when using Python for developing HPC codes running on the GPU. We investigate the portability of performance and energy efficiency between CUDA and OpenCL; between GPU generations; and between low-end, mid-range and high-end GPUs. Our findings show that the impact of using Python is negligible for our applications, and furthermore, CUDA and OpenCL applications tuned to an equivalent level can in many cases obtain the same computational performance. Our experiments show that performance in general varies more between different GPUs than between using CUDA and OpenCL. We also show that tuning for performance is a good way of tuning for energy efficiency, but that specific tuning is needed to obtain optimal energy efficiency.
description: 23 pages, 9 figures
Regression-Based Inequality Decomposition: A Critical Review and Application to Farm-Household Income Data
Creators: name: Kimhi, Ayal
name: Kimhi, Ayal
Publisher: name: Unknown
Year: 2007
Subjects: Agricultural and Food Policy
Consumer/Household Economics

description: The purpose of this paper is to critically review and discuss several interpretations of inequality decomposition methods offered in the literature. In particular, I claim that the “property of uniform additions” is not necessarily a desired property of inequality decomposition methods. This applies to decomposition of inequality by income sources as well as to regression-based decomposition by determinants of income. Thus, relying on this property (or lack thereof) to judge against decompositions based on the Gini index of inequality may be misleading. The Gini decomposition rule is more intuitively interpretable than alternative rules, and allows the derivation of the marginal effect on inequality of a uniform increase in an income source or a determinant of income. The results of several competing decomposition rules are compared using simulations and a case study of farm household income in Georgia.
Deep learning for clustering of continuous gravitational wave candidates
Creators: name: Beheshtipour, Banafsheh
name: Papa, Maria Alessandra
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: In searching for continuous gravitational waves over very many ($\approx 10^{17}$) templates , clustering is a powerful tool which increases the search sensitivity by identifying and bundling together candidates that are due to the same root cause. We implement a deep learning network that identifies clusters of signal candidates in the output of continuous gravitational wave searches and assess its performance. For loud signals our network achieves a detection efficiency higher than 97\% with a very low false alarm rate, and maintains a reasonable detection efficiency for signals with lower amplitudes, i.e. at $\lesssim$ current upper limit values.
The structure and function of complex networks
Creators: name: Newman, M. E. J.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: Inspired by empirical studies of networked systems such as the Internet, social networks, and biological networks, researchers have in recent years developed a variety of techniques and models to help us understand or predict the behavior of these systems. Here we review developments in this field, including such concepts as the small-world effect, degree distributions, clustering, network correlations, random graph models, models of network growth and preferential attachment, and dynamical processes taking place on networks.
description: Review article, 58 pages, 16 figures, 3 tables, 429 references, published in SIAM Review (2003)
Search for anomalous single production of the fourth SM family quark decaying into a light scalar
Creators: name: Arik, E.
name: Cakir, O.
name: Sultansoy, S.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Superjet events observed by the CDF Collaboration are interpreted as anomalous single production of the fourth SM family $u_4$ quark, decaying into a new light scalar particle. The specific predictions of the proposed mechanism are discussed.
description: 5 pages, 1 Table
Exploring extensions to the standard cosmological model and the impact of baryons on small scales
Creators: name: Stafford, Sam G.
name: Brown, Shaun T.
name: McCarthy, Ian G.
name: Font, Andreea S.
name: Robertson, Andrew
name: Poole-Mckenzie, Robert
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: It has been claimed that the standard model of cosmology (LCDM) cannot easily account for a number of observations on relatively small scales, motivating extensions to the standard model. Here we introduce a new suite of cosmological simulations that systematically explores three plausible extensions: warm dark matter, self-interacting dark matter, and a running of the scalar spectral index of density fluctuations. Current observational constraints are used to specify the additional parameters that come with these extensions. We examine a large range of observable metrics on small scales, including the halo mass function, density and circular velocity profiles, the abundance of satellite subhaloes, and halo concentrations. For any given metric, significant degeneracies can be present between the extensions. In detail, however, the different extensions have quantitatively distinct mass and radial dependencies, suggesting that a multi-probe approach over a range of scales can be used to break the degeneracies. We also demonstrate that the relative effects on the radial density profiles in the different extensions (compared to the standard model) are converged down to significantly smaller radii than are the absolute profiles. We compare the derived cosmological trends with the impact of baryonic physics using the EAGLE and ARTEMIS simulations. Significant degeneracies are also present between baryonic physics and cosmological variations (with both having similar magnitude effects on some observables). Given the inherent uncertainties both in the modelling of galaxy formation physics and extensions to LCDM, a systematic and simultaneous exploration of both is strongly warranted.
description: 22 pages, 12 figures, to match MNRAS accepted version
Are Changes in Farm Size and Labor Allocation Structurally Related? Dynamic Panel Evidence from Israel
Creators: name: Kimhi, Ayal
name: Rekah, Hila
name: Kimhi, Ayal
name: Rekah, Hila
Publisher: name: Unknown
Year: 2007
Subjects: Agricultural and Food Policy
Farm Management
Labor and Human Capital

description: This paper deals with structural changes that are observed in farm sectors in many developed economies: the increase in farm size and the shift of labor away from agriculture. Using panel data on Israeli farm communities for the years 1992-2001, we estimate a system of simultaneous equations in which farm size and the fraction of labor devoted to agriculture are determined jointly in a dynamic setting. We employ the Arellano and Bond dynamic panel GMM algorithm for each of the equations, treating the other variables as endogenous and allowing for unobserved heterogeneity and for time trends that depend on geographical and institutional factors. The results exhibit positive and statistically significant autoregressive effects in both size and labor allocation. We find, as in earlier studies, that the association between farm size and farm labor allocation is positive, but the causality goes from size to labor and not in the opposite direction. This implies that independent factors that increase the level of agricultural activity help to moderate the rate of labor exodus from farming. On the other hand, independent factors that pull labor out of agricultural production do not significantly reduce the level of agricultural activity, perhaps because family labor is replaced by hired labor and/or capital investments. Farm growth seems to be quite heterogeneous across types of farm communities, with aggregate farm growth occurring mostly in relatively young communities in the south of the country, while agricultural activity on other farm communities is stagnant or even shrinks over time. Continuation of these processes could lead, in the long run, to concentration of agricultural production in a small number of large, business-oriented, farm enterprises.
Time perspective, discounting and climate change policy
Creators: name: Karp, Larry
name: Tsur, Yacov
name: Karp, Larry
name: Tsur, Yacov
Publisher: name: Unknown
Year: 2007
Subjects: subject: Environmental Economics and Policy
subject: Risk and Uncertainty
subject: Hyperbolic discounting
subject: Markov Perfect Equilibria
subject: catastrophic climate change
subject: uncertainty

description: Time perspective – the tendency to foreshorten time units as we peer further into the future – implies hyperbolic discounting. We study implications of hyperbolic discounting for climate change policy, using a model in which the probability of a climate-induced catastrophe depends on the stock of greenhouse gasses (GHG). We characterize the set of Markov perfect equilibria of the intergenerational game in which each generation can either do nothing or stabilize atmospheric GHG concentration, and compare this set to a “restricted commitment” benchmark. We calculate the associated “constant equivalent discount rates” and the corresponding levels of expenditure to control climate change, and compare these results to discounting assumptions and policy recommendations in the Stern Review on Climate Change.
Three-body electrodisintegration of the three-nucleon bound state with $Δ$-isobar excitation: Processes below pion-production threshold
Creators: name: Deltuva, A.
name: Yuan, L. P.
name: Adam, J.
name: Sauer, P. U.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Electron scattering from the three-nucleon bound state with two- and three-body disintegration is described. The description uses the purely nucleonic charge-dependent CD-Bonn potential and its coupled-channel extension CD-Bonn + $Δ$. Exact solutions of three-particle equations are employed for the initial and final states of the reactions. The current has one-baryon and two-baryon contributions and couples nucleonic with $Δ$-isobar channels. $Δ$-isobar effects on the observables are isolated. The $Δ$-isobar excitation yields an effective three-nucleon force and effective two- and three-nucleon currents beside other $Δ$-isobar effects; they are mutually consistent.
description: 12 pages, 11 figures, submitted to Phys. Rev. C
Heterogeneous technology and panel data: The case of the agricultural production function
Creators: name: Mundlak, Yair
name: Butzer, Rita
name: Larson, Donald F.
name: Mundlak, Yair
name: Butzer, Rita
name: Larson, Donald F.
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agricultural and Food Policy
subject: Research and Development/Tech Change/Emerging Technologies
subject: Agriculture
subject: development
subject: economic growth
subject: panel data
subject: productivity

description: The paper presents empirical analysis of a panel of countries aimed at estimating agricultural production using a measure of capital in agriculture absent from most studies. We employ a heterogeneous technology framework where implemented technology is chosen jointly with inputs to interpret information obtained in the empirical analysis of panel data. We discuss the scope for replacing country and time effects by observed variables and the limitations of instrumental variables. The empirical results differ from those reported in the literature for cross-country studies, largely in augmenting the elasticities of capital and land and reducing those of fertilizers and labor.
Packaging and Price-Marking Produce in Retail Food Stores : A Study of Improved Methods of Marketing Agricultural Products
Creators: name: Shaffer, Paul
name: Anderson, Dale
name: Wischkaemper, Paul
name: Karitas, James
name: Shaffer, Paul
name: Anderson, Dale
name: Wischkaemper, Paul
name: Karitas, James
Publisher: name: Unknown
Year: 1958
Subjects: subject: Labor and Human Capital
subject: Marketing
subject: FOS: Economics and business
subject: Research Methods/ Statistical Methods

description: Excerpts from the report Introduction: The purpose of this study was to evaluate existing produce packaging and price-marking procedures and to develop and test improved equipment, packaging and pricing methods, workplace arrangement, packaging materials, and work organization. Detailed studies were made in several stores belonging to each of 8 retail food chains. Additional studies of a more limited nature were made of specific produce procedures in numerous other stores throughout the United States. Motion and time studies were made of each produce item or class of items with common handling techniques, to determine the time requirements for all the elements in the packaging function. Cost analysis and yield studies were made to evaluate materials used in produce departments. The methods, equipment, layouts, and materials reported here were developed, tested, and installed in stores of the cooperating retail food chains. It is believed that the research results reported in this study will afford most operators an opportunity to lower their packaging and price-marking costs even though they may be packaging a limited number of items.
Βελτιστοποίηση παραμέτρων κατεργασίας κοπής με λέιζερ τεχνολογίας CO2 ειδικού χάλυβα υψηλής αντοχής ΄΄Hardox 450΄΄ και κράματος αλουμινίου ΄΄ΑΑ5083΄΄ με χρήση της μεθόδου Taguchi
Creators: name: Γκουμά, Μαρία Χρήστου
Publisher: name: Aristotle University of Thessaloniki
Year: 2021
Subjects: Παράμετροι κοπής
Χάλυβας υψηλής αντοχής '' Hardox 450''
Κράμα Αλουμινίου ''ΑΑ 5083''
Laser CO2
High strength steel '' Hardox 450''
Aluminum alloy ''ΑΑ 5083''

description: Η διπλωματική εργασία πραγματεύεται την επίδραση πλήθους παραμέτρων κατά την κοπή κράματος Αλουμινίου-Μαγνησίου και Χάλυβα υψηλής αντοχής με τη χρήση μηχανήματος κοπής Laser τεχνολογίας CO2. Απώτερος σκοπός της μελέτης είναι η ανεύρεση των παραμέτρων που επηρεάζουν σημαντικά την ποιότητα κοπής κατά τη χρήση μηχανήματος Laser και την βελτιστοποίηση τους λαμβάνοντας υπόψη τα χαρακτηριστικά των υλικών προς επεξεργασία. Στην διπλωματική εργασία παρουσιάζεται η εφαρμογή της μεθόδου Taguchi αποδεικνύοντας την χρηστικότητά της στην βελτιστοποίηση των παραμέτρων κοπής. Πραγματοποιείται αξιολόγηση ενός συνόλου παραγόντων βελτιστοποίησης μέσω των ορθογωνικών πινάκων της μεθόδου Taguchi στο πρόγραμμα Minitab. Μέσω της μεθόδου διεξήχθη η επιθυμητή βελτιστοποίηση με βάση την ποιότητα, βρίσκοντας την καλύτερη συσχέτιση παραγόντων, μελετώντας δυο μεταβλητές, την τραχύτητα επιφανείας και το πάχος της ζώνης επηρεασμού θερμότητας.
description: The experimental research that examines the effect of a number of parameters during the cutting of High Strength Steel and Aluminum-Magnesium Alloy using a CO2 Laser Cutting Machine. The ultimate goal of the study is to find the parameters that significantly affect the cutting quality when using a Laser machine and optimize them taking into account the characteristics of the materials to be processed. In the dissertation is presented the application of the Taguchi method proving its usefulness in optimizing the cutting parameters. A set of optimization factors is evaluated through the rectangular tables of the Taguchi method in the Minitab program. Through the method, the desired optimization based on quality was performed, finding the best correlation of factors, studying two variables, the surface roughness and the thickness of the heat affect zone. The materials selected for the case study are the high-strength steel Hardox with 450 Brinell of the Swedish company SSAB and the Magnesium Aluminum alloy of the series 5xxx AA 5083. The above materials were selected due to their very special properties and the variety of special applications, which make them worth studying.
Wearable Haptics for Remote Social Walking
Creators: name: Baldi, Tommaso Lisini
name: Paolocci, Gianluca
name: Barcelli, Davide
name: Prattichizzo, Domenico
Publisher: name: arXiv
Year: 2020
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: FOS: Computer and information sciences

description: Walking is an essential activity for a healthy life, which becomes less tiring and more enjoyable if done together. Common difficulties we have in performing sufficient physical exercise, for instance the lack of motivation, can be overcome by exploiting its social aspect. However, our lifestyle sometimes makes it very difficult to find time together with others who live far away from us to go for a walk. In this paper we propose a novel system enabling people to have a 'remote social walk' by streaming the gait cadence between two persons walking in different places, increasing the sense of mutual presence. Vibrations provided at the users' ankles display the partner's sensation perceived during the heel-strike. In order to achieve the aforementioned goal in a two users experiment, we envisaged a four-step incremental validation process: i) a single walker has to adapt the cadence with a virtual reference generated by a software; ii) a single user is tasked to follow a predefined time varying gait cadence; iii) a leader-follower scenario in which the haptic actuation is mono-directional; iv) a peer-to-peer case with bi-directional haptic communication. Careful experimental validation was conducted involving a total of 50 people, which confirmed the efficacy of our system in perceiving the partners' gait cadence in each of the proposed scenarios.
title: Remote sensing techniques applied to the pan-African terrain of north-east Africa
Creators: name: Gibson, Paul Jude
Publisher: name: The Open University
Year: 1986

description: The major lithologies of the Red Sea Hills, Sudan, can be identified on Landsat band 7 photographic infra-red imagery. Lithological discrimination is not significantly increased on contrast stretched false colour imagery because of desert varnish. Principal component false colour imagery yields the best lithological discrimination but because of contamination from the erosional products of different lithologies - mainly Nubian Sandstone - colour/rock associations are not unique, thus using Landsat alone for detailed geological mapping would not be justified. Most of the geological information acquired by various types of Landsat image is detected on band 7, therefore the expense incurred in producing more sophisticated imagery is not warranted. Photoreduced uncontrolled mosaics of panchromatic aerial photographs are inferior to Landsat images for regional investigations. Lithological discrimination is inferior on radar imagery (SIE-A) compared with Landsat but radar is a superior system for acquiring structural information. Penetration of the sand cover by radar, possibly up to a depth of 6m, revealed lineaments, circular features, folded structures and numerous drainage channels, some of which are probably palaeodrainage systems. In the Wadi Onib region, lineaments have been dextrally deformed into a N/S zone which is probably an island-arc suture. A complex sinistral oblique-slip shear zone system more than 500km long appears to have operated in N.E. Sudan. It is formed by a 200km N.40oW. - trending shear zone in the southern Red Sea Hills which apparently curves near Wadi Onib to an approx. N/S strike and sweeps round into the E.N.E. - trending Sol Earned zone. A plate tectonic model involving oblique subduction and rotation of a plate can explain the structural relationships. The Hakasib belt, a possible island-arc suture, is shown by a 7km wide, 200km long belt of N.60oE. - striking lineaments. In Eritrea a N.N.W. - striking zone of lineaments is overprinted at its northern termination by lineaments of the curvilinear Adobaha belt which is subparallel to the Argadom belt.
Institutional Reform in the Burkinabè Cotton Sector and its Impacts on Incomes and Food Security: 1996-2006
Creators: name: Kaminski, Jonathan
name: Headey, Derek
name: Bernard, Tanguy
name: Kaminski, Jonathan
name: Headey, Derek
name: Bernard, Tanguy
Publisher: name: Unknown
Year: 2009
Subjects: Crop Production/Industries
Food Security and Poverty
Institutional and Behavioral Economics

description: Like other West African cotton producers, Burkina Faso’s cotton strategy has traditionally involved substantial government intervention in both input and output markets. Despite some notable successes, this state-led strategy had become widely criticized by the late 1980s for inefficiencies, inequities, and for inducing macro-economic instability. However, Burkina Faso rejected both the status quo and wholesale liberalization paths, and instead embarked on a more gradual and sequenced reform path that included strengthening farmers’ groups before partially liberalizing input and output markets. Although these reforms have coincided with Burkina Faso becoming the largest cotton exporter in Africa, this paper more rigorously assesses the success of these reforms through both descriptive evidence and a counterfactual analysis of what might have happened if the prereform status quo had continued. We conclude that the reforms were highly successful in terms of production growth, job creation, and in improving nutrition and poverty reduction among cotton producers. However, we also consider important caveats. Partly by design, the reforms were less successful at raising yields, stimulating development in the broader economy, or addressing environmental concerns. The more damaging criticism that the reforms have proved financially unsustainable is also considered. Without being apologist, we argue that the new institutions created under the cotton reforms at least provide a deliberative forum for successfully addressing the problem. A key challenge for the near future will be to ensure that the key institutions in this forum – particularly the farmers union and the former parastatal – are made more accountable to farmers and other key actors in the cotton sectors.
Multi-black hole solutions in five dimensions
Creators: name: Tan, H. S.
name: Teo, Edward
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Using a recently developed generalized Weyl formalism, we construct an asymptotically flat, static vacuum Einstein solution that describes a superposition of multiple five-dimensional Schwarzschild black holes. The spacetime exhibits a U(1)\times U(1) rotational symmetry. It is argued that for certain choices of parameters, the black holes are collinear and so may be regarded as a five-dimensional generalization of the Israel-Khan solution. The black holes are kept in equilibrium by membrane-like conical singularities along the two rotational axes; however, they still distort one another by their mutual gravitational attraction. We also generalize this solution to one describing multiple charged black holes, with fixed mass-to-charge ratio, in Einstein-Maxwell-dilaton theory.
description: 23 pages, 6 figures
Critical behavior of charge-regulated macro-ions
Creators: name: Avni, Yael
name: Podgornik, Rudolf
name: Andelman, David
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Based on a collective description of electrolytes composed of charge-regulated macro-ions and simple salt ions, we analyze their equilibrium charge state in the bulk and their behavior in the vicinity of an external electrified surface. The mean-field formulation of mobile macro-ions in an electrolyte bathing solution is extended to include interactions between association/dissociation sites. We demonstrate that above a critical concentration of salt, and similar to the critical micelle concentration, a non-trivial distribution of charge states sets in. Such a charge state can eventually lead to a liquid-liquid phase separation based on charge regulation.
description: 12 pages, 7 figures
Local Policies and Practices for Climate Mitigation : guidance for local governments in BC from around the world.
Creators: name: Senbel, Maged
name: Pierce, Jennifer Rae
Publisher: name: The University of British Columbia
Year: 2019

description: This report is part of the Community Energy Efficiency Project, in an area of applied research entitled Increasing Energy Efficiency in BC’s Built Environment. This project works at the neighborhood scale and above to generate insight that will provide guidance to increase community energy efficiency in BC, particularly in regards to the area of planning for the built environment. Objective: The aim of this project is to conduct a critical, comprehensive review of international best practices in climate mitigation associated with building of community energy efficiency initiatives and determine their potential applicability to BC urban and rural settings. We will take these lessons and develop tools and instruments that will work in BC according to feedback from local practitioners.