cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Charges of Exceptionally Twisted Branes
Creators: name: Gannon, Terry
name: Vasudevan, Muraari
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The charges of the exceptionally twisted (D4 with triality and E6 with charge conjugation) D-branes of WZW models are determined from the microscopic/CFT point of view. The branes are labeled by twisted representations of the affine algebra, and their charge is determined to be the ground state multiplicity of the twisted representation. It is explicitly shown using Lie theory that the charge groups of these twisted branes are the same as those of the untwisted ones, confirming the macroscopic K-theoretic calculation. A key ingredient in our proof is that, surprisingly, the G2 and F4 Weyl dimensions see the simple currents of A2 and D4, respectively.
description: 19 pages, 2 figures, LaTex2e, complete proofs of all statements, updated bibliography
Finding Aid for the Peter Dunn Collection (YMS 15452)
Creators: name: Daniels, Elizabeth
name: ANN MCCARTHY
name: ANTONINA LEWIS
name: ANNA RUSSELL
name: ARLIE MCCARTHY
Publisher: name: figshare
Year: 2021
Subjects: Uncategorized

description: This data consists of Pdf copies of the online finding aid for the Peter Dunn Collection. This collection is currently held by the State Library of Victoria (YMS 1542). The finding aid was created in 2014 at the eScholarship Research Centre, The University of Melbourne by research archivists: Ann McCarthy, Antonina Lewis, Anna Russell, Elizabeth Daniels, and Arlie McCarthy. Much of the photographic material has been digitised and is available through the State Library of Victoria. This finding aid was published online at: https://web.esrc.net.au/DUNN/index.htm
Adaptive Graph Encoder for Attributed Graph Embedding
Creators: name: Cui, Ganqu
name: Zhou, Jie
name: Yang, Cheng
name: Liu, Zhiyuan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Attributed graph embedding, which learns vector representations from graph topology and node features, is a challenging task for graph analysis. Recently, methods based on graph convolutional networks (GCNs) have made great progress on this task. However,existing GCN-based methods have three major drawbacks. Firstly,our experiments indicate that the entanglement of graph convolutional filters and weight matrices will harm both the performance and robustness. Secondly, we show that graph convolutional filters in these methods reveal to be special cases of generalized Laplacian smoothing filters, but they do not preserve optimal low-pass characteristics. Finally, the training objectives of existing algorithms are usually recovering the adjacency matrix or feature matrix, which are not always consistent with real-world applications. To address these issues, we propose Adaptive Graph Encoder (AGE), a novel attributed graph embedding framework. AGE consists of two modules: (1) To better alleviate the high-frequency noises in the node features, AGE first applies a carefully-designed Laplacian smoothing filter. (2) AGE employs an adaptive encoder that iteratively strengthens the filtered features for better node embeddings. We conduct experiments using four public benchmark datasets to validate AGE on node clustering and link prediction tasks. Experimental results show that AGE consistently outperforms state-of-the-art graph embedding methods considerably on these tasks.
description: To appear in KDD 2020
Weather, chance and the unpredictable in thucydides
Creators: name: MacHattie, James Alexander
Publisher: name: University of British Columbia
Year: 2009

description: Thucydides the Athenian wrote his History of the Peloponnesian War, the famed conflict between Athens and Sparta of 431-404 BCE, in the belief that this period was the most worth writing about. He hoped that his composition would become a "possession for all time". He prided himself on his accuracy and thoroughness of research and reporting. His history is didactic and paradigmatic, and in it he makes use of a number of themes, from which he hoped that those who would read his work could understand clearly how events happened and be able to realize how events will be repeated in much the same ways. One such theme is the influence of chance and the unpredictable on the war. Chance was portrayed by Thucydides as a force which has the ability to alter the orderly and logical course of events. One aspect of chance and the unpredictable is the element of weather. This thesis examines the element of weather as an example of the unpredictable and as a manifestation of chance. The following questions arise: How does Thucydides perceive weather as an element of chance and the unpredictable? Does he consider weather to be a force in the war, having the ability to affect the course of events by hindering or preventing campaigns, or aiding or leading to campaigns? Is there a pattern to the human reaction to such events? The original Greek text of Thucydides was integral in attempting to answer these questions. The CD-ROM Thesaurus Graecae Linguae was a great help in conducting word searches through Thucydides' material to isolate passages relating to chance, the unpredictable and weather. It became evident that two sections were required; one on the speeches recounted in the work, and one on the actual events. There were five major episodes which demonstrated the effect of weather and the unpredictable on the war; the affair at Pylos, the exploits of Brasidas, Phormio's battles at Naupactus, Plataea, and the events of Book Eight. With focus on the relevant material in Thucydides' text, other ancient authors and modern scholarship, the material took the form of two major sections, with the second divided into the five episodes. Thucydides' speeches, examined in Chapter I, establish his view of chance and the unpredictable. Chapter II examines the applications of this view through the above events, in which weather was a factor. Throughout, Thucydides' commentary on the reaction to these events is noted. The following conclusions were formed: weather is an element of the unpredictable and chance when it is not spread over a prolonged period of time. Weather was seen to hinder, prevent, aid and effect campaigns. It is clear that Thucydides believed that the human reaction to such events tended to follow a patter, which was generally predictable. Weather, chance and the unpredictable fit into Thucydides' method of presenting material in such a manner so as to enable his readers to make reasonable calculations on how events took place, and how they may happen again.
Radiative Generation of Leptonic CP Violation
Creators: name: Luo, Shu
name: Mei, Jianwei
name: Xing, Zhi-zhong
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Three CP-violating phases of the $3\times 3$ lepton flavor mixing matrix $V$ are entangled with one another in the renormalization-group evolution from the seesaw scale ($Λ_{\rm SS} \sim 10^{14}$ GeV) to the electroweak scale ($Λ_{\rm EW} \sim 10^2$ GeV). Concerning the Dirac phase $δ$, we show that $δ=90^\circ$ at $Λ_{\rm EW}$ can be radiatively generated from $δ=0^\circ$ at $Λ_{\rm SS}$ in the minimal supersymmetric standard model, if three neutrino masses are nearly degenerate. As for the Majorana phases $ρ$ and $σ$, it is also possible to radiatively generate $ρ=90^\circ$ or $σ= 90^\circ$ at $Λ_{\rm EW}$ from $ρ=0^\circ$ or $σ= 0^\circ$ at $Λ_{\rm SS}$. The one-loop renormalization-group equations for the Jarlskog invariant and two off-diagonal asymmetries of $V$ are derived, and their running behaviors from $Λ_{\rm SS}$ to $Λ_{\rm EW}$ are numerically illustrated.
description: RevTex 20 pages, 5 figures. More discussions added. Phys. Rev. D (in press)
Series Descriptions for the Peter Dunn Collection (YMS 15452)
Creators: name: Daniels, Elizabeth
name: ANN MCCARTHY
name: ANTONINA LEWIS
name: ANNA RUSSELL
name: ARLIE MCCARTHY
Publisher: name: figshare
Year: 2021
Subjects: Uncategorized

description: This data consists of Pdf copies of the online finding aid for the Peter Dunn Collection. This collection is currently held by the State Library of Victoria (YMS 1542). The finding aid was created in 2014 at the eScholarship Research Centre, The University of Melbourne by research archivists: Ann McCarthy, Antonina Lewis, Anna Russell, Elizabeth Daniels, and Arlie McCarthy. Much of the photographic material has been digitised and is available through the State Library of Victoria. This finding aid was published online at: https://web.esrc.net.au/DUNN/index.htm
CNNs on Surfaces using Rotation-Equivariant Features
Creators: name: Wiersma, Ruben
name: Eisemann, Elmar
name: Hildebrandt, Klaus
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Computational Geometry (cs.CG)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences
subject: I.2.10; I.3.5

description: This paper is concerned with a fundamental problem in geometric deep learning that arises in the construction of convolutional neural networks on surfaces. Due to curvature, the transport of filter kernels on surfaces results in a rotational ambiguity, which prevents a uniform alignment of these kernels on the surface. We propose a network architecture for surfaces that consists of vector-valued, rotation-equivariant features. The equivariance property makes it possible to locally align features, which were computed in arbitrary coordinate systems, when aggregating features in a convolution layer. The resulting network is agnostic to the choices of coordinate systems for the tangent spaces on the surface. We implement our approach for triangle meshes. Based on circular harmonic functions, we introduce convolution filters for meshes that are rotation-equivariant at the discrete level. We evaluate the resulting networks on shape correspondence and shape classifications tasks and compare their performance to other approaches.
description: 12 pages, 14 figures, 5 tables, to be published in ACM ToG (SIGGRAPH 2020)
On the effect of dispersion on nonlinear phase noise
Creators: name: Ho, Keang-Po
name: Wang, Hsi-Cheng
Publisher: name: arXiv
Year: 2006
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The variance of nonlinear phase noise is analyzed by including the effect of intrachannel cross-phase modulation (IXPM)-induced nonlinear phase noise. Consistent with Ho and Wang [1] but in contrary to the conclusion of both Kumar [2] and Green et al. [3], the variance of nonlinear phase noise does not decrease much with the increase of chromatic dispersion. The results are consistent with a careful reexamination of both Kumar [2] and Green et al. [3].
description: 3 pages, 1 figure, submitted to Optics Letters
IMPACT OF GLOBAL COTTON MARKETS ON RURAL POVERTY IN BENIN
Creators: name: Minot, Nicholas
name: Daniels, Lisa
name: Minot, Nicholas
name: Daniels, Lisa
Publisher: name: Unknown
Year: 2002
Subjects: Crop Production/Industries
Food Security and Poverty

description: World cotton prices have fallen by about 40 percent over the last two years, focusing attention on the effect of subsidies for cotton growers in depressing prices. This paper combines farm survey data from Benin with assumptions about the decline in farm- level prices to estimate the direct and indirect effects of cotton price reductions on rural income and poverty in Benin. The results indicate that there is a strong link between cotton prices and rural welfare in Benin. A 40 percent reduction in farm-level prices of cotton results in an increase in rural poverty of 8 percentage points in the short-run and 6- 7 percentage points in the long run. Based on the estimated marginal propensity to consume tradable goods, the consumption multiplier is in the range of 3.3, meaning that one dollar of reduced spending by cotton growers results in a contraction of 3.3 dollars in overall demand. Finally, econometric analysis of the determinants of the demand for hired agricultural labor suggests that falling cotton prices will not greatly reduce labor demand since the labor intensity of cotton is similar to that of competing crops in Benin. Overall, the study highlights the link between rising subsidies for cotton growers in the U.S. and rural poverty in cotton exporting countries such as Benin.
RICE TRADE LIBERALIZATION AND POVERTY
Creators: name: Gulati, Ashok
name: Narayanan, Sudha
name: Gulati, Ashok
name: Narayanan, Sudha
Publisher: name: Unknown
Year: 2002
Subjects: Crop Production/Industries
International Relations/Trade

description: Rice is the lifeline of almost 70% of the world's poor residing in Asia, where more than 90% of world rice production and consumption takes place. Rice trade liberalization therefore has tremendous implications for poverty. The world rice market is highly distorted, partly because of the high degree of intervention in rice markets across the world. While poor countries such as Thailand, Vietnam, and India tend to "disprotect" rice sectors, the rich countries of East Asia (Japan and Korea), Europe, and the United States heavily support their rice producers. As a result, there is great diversity in domestic rice price levels, with very high prices in the latter countries and very low prices in the former. Trade liberalization would thus result in flows from these poorer Asian countries to East Asia and Europe. This is predicted to have beneficial effects for poverty, through producer price increases and second-round effects (wages, employment, and investment) in exporting countries, and to augment short-term food security in poor importing countries. However, if rice trade liberalization is to contribute to poverty alleviation in developing countries, there is a need to streamline distortionary agricultural policies, particularly in developed countries. Also important are "behind the border" reforms in developing countries aimed at reducing transactions costs for farmers, rationalizing input pricing policies, ensuring access to risk management institutions and safety nets, improving access to food, and combating adverse environmental conditions. In the long run, rice trade liberalization might have to be coupled with initiatives to enhance agricultural productivity and rural economic growth to be able to make a dent in poverty.
Nader Ale Ebrahim's Academic Impact and Collaboration
Creators: name: Nader, Ale Ebrahim
Publisher: name: Zenodo
Year: 2024
Subjects: Research Tools
H-index
Virtual R&D teams
Technology Management
University Rankings
Bibliometrics
Research Visibility
Research Impact

description: By the end of 2023, Nader Ale Ebrahim achieved a significant milestone in his academic career, marked by an impressive growth in citations and scholarly impact. His work garnered 2,009 citations from 1,884 documents, reflecting a 31.6% increase in citations and a 31.7% increase in citing documents compared to the previous year (The list extracted from SCOPUS on January 11th, 2024). The number of his publications rose to 55, a 14.6% increase. Notably, his h-index reached 18, indicating a consistent quality and influence in his research. A remarkable 74.4% of his collaborations were international, highlighting his global research connections. Further, 51.3% of his documents ranked in the top citation percentiles, with 58.6% published in the top 25% journals, underscoring the relevance and esteem of his work in the academic community. His Field-Weighted Citation Impact stood at 2.19, demonstrating a significant above-average influence in his field. These achievements emphasize the growing visibility and impact of his research contributions. 
description: In 2023, Nader Ale Ebrahim's scholarly work reached new heights with 2,009 citations and a significant increase in global academic collaboration, reflecting a marked ascension in research impact and influence.
AGRICULTURE DIVERSIFICATION IN SOUTH ASIA: PATTERNS, DETERMINANTS AND POLICY IMPLICATIONS
Creators: name: Joshi, P.K.
name: Gulati, Ashok
name: Birthal, Pratap Singh
name: Tewari, Laxmi
name: Joshi, P.K.
name: Gulati, Ashok
name: Birthal, Pratap Singh
name: Tewari, Laxmi
Publisher: name: Unknown
Year: 2003
Subjects: Farm Management

description: The South Asian countries are gradually diversifying with some inter-country variation in favor of high value commodities, namely fruits, vegetables, livestock and fisheries. Agricultural diversification is strongly influenced by price policy, infrastructure development (especially markets and roads), urbanization and technological improvements. Rainfed areas have benefited more as a result of agricultural diversification in favor of high value crops by substituting inferior coarse cereals. Agricultural diversification is also contributing to employment opportunities in agriculture and increasing exports. The need is to suitably integrate production and marketing of high value commodities through appropriate institutions. Market reforms in developing and strengthening desired institutions through required legal changes would go a long way in boosting agricultural growth, augmenting income of small farm holders and promoting exports.
SUCCESSES IN AFRICAN AGRICULTURE: RESULTS OF AN EXPERT SURVEY
Creators: name: Gabre-Madhin, Eleni Z.
name: Haggblade, Steven
name: Gabre-Madhin, Eleni Z.
name: Haggblade, Steven
Publisher: name: Unknown
Year: 2003
Subjects: International Development

description: Using primary data from a survey of expert opinion, this paper identifies key successes emerging in African agriculture. Among these, major commodity-specific successes identified include breakthroughs in maize breeding across Africa, sustained gains in cassava breeding and successful combat of its disease and pests, control of the rinderpest livestock disease, booming horticultural and flower exports in East and Southern Africa and increased cotton production and exports in West Africa. Using a dynamic analytical framework, the paper attempts to identify key ingredients that appear necessary for building on these individual cases and expanding them into broad-based agricultural growth.
THE NEW INSTITUTIONAL ECONOMICS: APPLICATIONS FOR AGRICULTURAL POLICY RESEARCH IN DEVELOPING COUNTRIES
Creators: name: Kherallah, Mylene
name: Kirsten, Johann F.
name: Kherallah, Mylene
name: Kirsten, Johann F.
Publisher: name: Unknown
Year: 2001
Subjects: Agricultural and Food Policy
Research and Development/Tech Change/Emerging Technologies

description: This paper summarizes the potential contributions of the new institutional economics to agricultural policy research, with particular emphasis to developing countries. The paper starts by providing an overview of the new institutional economics and its several branches of thought. It then describes the future challenges facing world agriculture and shows the potential applications of new institutional and transaction costs economics to agricultural policy analysis in this new world environment. The paper concludes by providing specific examples of interest in the area of agricultural market research in developing countries that can be analyzed using the new institutional economics. As a dynamic and relatively new school of thought, the new institutional economics offers exciting opportunities to answer some of the economic problems that neo-classical economics has found difficult to answer.
Accelerating computed tomographic imaging spectrometer reconstruction using a parallel algorithm exploiting spatial shift-invariance
Creators: name: White, Larz
name: Bell, W. Bryan
name: Haygood, Ryan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Image and Video Processing (eess.IV)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Computed Tomographic Imaging Spectrometers (CTIS) capture hyperspectral images in realtime. However, post processing the imagery can require enormous computational resources; thus, limiting its application to non-realtime scenarios. To overcome these challenges we developed a highly parallelizable algorithm that exploits spatial shift-invariance. To demonstrate the versatility of our new algorithm, we developed implementations on a desktop and an embedded graphics processing unit (GPU). To our knowledge, our results show the fastest image reconstruction times reported.
Results of nanoindentation and elemental analyses from Mandible elemental composition and mechanical properties from distinct castes of the leafcutter ant Atta laevigata (Attini; Formicidae)
Creators: name: Birkenfeld, Valentin
name: Gorb, Stanislav N.
name: Krings, Wencke
Publisher: name: The Royal Society
Year: 2024
Subjects: classificationCode: 310114
subject: Systems biology
classificationCode: 400302
subject: Biomaterials

description: Leaf-cutter ant colonies are divided into castes with the individuals performing different tasks, based mostly on size. With the mandibles, the small minims care for the brood or the fungus, whereas the larger minors and mediae cut and transport plant material, with the ant size positively related to the material size. The mechanical properties and composition of the mandible cuticle have been previously tested in the soldiers as the largest caste, revealing that the cutting edges contained high contents of the cross-linking transition metal zinc (Zn). With regard to the smaller castes, no data are present. To study how the mandible size and function relates to its mechanical properties, we here tested the mandibles of minims, minors and mediae by nanoindentation. We found that the hardness (H) and Young's modulus (E) values increased with increasing ant size and that the mandible cutting edges in each caste have the highest H- and E-values. To gain insight into the origins of these properties, we characterized the elemental composition by energy-dispersive X-ray analysis, revealing that minors and mediae possessed higher content of Zn in the cutting edges in contrast to the minims containing significantly less Zn. This shows, that Zn content relates to higher mechanical property values. Additionally, it shows that all of these parameters can differ within a single species.
BUMPER CROPS, PRODUCER INCENTIVES AND PERSISTENT POVERTY: IMPLICATIONS FOR FOOD AID PROGRAMS IN BANGLADESH
Creators: name: Dorosh, Paul A.
name: Shahabuddin, Quazi
name: Aziz, Md. Abdul
name: Farid, Naser
name: Dorosh, Paul A.
name: Shahabuddin, Quazi
name: Aziz, Md. Abdul
name: Farid, Naser
Publisher: name: Unknown
Year: 2002
Subjects: Food Security and Poverty

description: Food aid has played a useful role in Government of Bangladesh efforts to increase food security in the last three decades, adding to foodgrain availability, supplying wheat for targeted distribution to poor households, and helping to finance development projects and programs. However, sustained increases in domestic production of both rice and wheat have increased the likelihood of disincentive effects arising from continued large inflows of food aid. The analysis shows that if good rice harvests continue so that real rice prices remain at their levels of 2000, and if international wheat prices return to their average 1995-99 levels, then public wheat distribution may need to be cut to levels below the current amount of food aid received (650 thousand tons in 2000/2001) to avoid reducing domestic prices below import parity. However, resources will continue to be required for programs that increase access to food by the poor, contribute to increased utilization of food and result in improved nutritional outcomes, even if the need for food aid to increase availability of foodgrains diminishes.
VIP-club phenomenon: emergence of elites and masterminds in social networks
Creators: name: Masuda, Naoki
name: Konno, Norio
Publisher: name: arXiv
Year: 2005
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: Hubs, or vertices with large degrees, play massive roles in, for example, epidemic dynamics, innovation diffusion, and synchronization on networks. However, costs of owning edges can motivate agents to decrease their degrees and avoid becoming hubs, whereas they would somehow like to keep access to a major part of the network. By analyzing a model and tennis players' partnership networks, we show that combination of vertex fitness and homophily yields a VIP club made of elite vertices that are influential but not easily accessed from the majority. Intentionally formed VIP members can even serve as masterminds, which manipulate hubs to control the entire network without exposing themselves to a large mass. From conventional viewpoints based on network topology and edge direction, elites are not distinguished from many other vertices. Understanding network data is far from sufficient; individualistic factors greatly affect network structure and functions per se.
description: 15 pages (double spaced) + 5 figures, Social Networks, in press
Direct band gap and strong Rashba effect in van der Waals heterostructures of InSe and Sb single layers
Creators: name: Fang, Dangqi
name: Chen, Siyu
name: Li, Yaqi
name: Monserrat, Bartomeu
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: Van der Waals heterostructures formed by stacking different types of 2D materials are attracting increasing attention due to new emergent physical properties such as interlayer excitons. Recently synthesized atomically thin indium selenide (InSe) and antimony (Sb) individually exhibit interesting electronic properties such as high electron mobility in the former and high hole mobility in the latter. In this work, we present a first-principles investigation on the stability and electronic properties of ultrathin bilayer heterostructures composed of InSe and Sb single layers. The calculated electronic band structures reveal a direct band gap semiconducting nature of the InSe/Sb heterostructures independent of stacking pattern. Taking spin-orbit coupling into account, we find a large Rashba spin splitting at the bottom of conduction band, which originates from the atomic spin-orbit coupling with the symmetry breaking in the heterostructure. The strength of the Rashba spin splitting can be tuned by applying in-plane biaxial strain or an out-of-plane external electric field. The presence of large Rashba spin splitting together with a suitable band gap in InSe/Sb bilayer heterostructures make them promising candidates for spin field-effect transistor and optoelectronic device applications.
Pinning frequencies of the collective modes in $α$-uranium
Creators: name: Mihaila, B.
name: Opeil, C. P.
name: Drymiotis, F. R.
name: Smith, J. L.
name: Cooley, J. C.
name: Manley, M. E.
name: Migliori, A.
name: Mielke, C.
name: Lookman, T.
name: Saxena, A.
name: Bishop, A. R.
name: Blagoev, K. B.
name: Thoma, D. J.
name: Lang, B. E.
name: Boerio-Goates, J.
name: Woodfield, B. F.
name: Schmiedeshoff, G. M.
name: Lashley, J. C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Uranium is the only known element that features a charge-density wave (CDW) and superconductivity. We report a comparison of the specific heat of single-crystal and polycrystalline $α$-uranium. \red{Away from the the phase transition the specific heat of the polycrystal is larger than that of the single crystal, and the aim of this paper is to explain this difference.} In the single crystal we find excess contributions to the heat capacity at 41 K, 38 K, and 23 K, with a Debye temperature, $Θ_D$ = 256 K. In the polycrystalline sample the heat capacity curve is thermally broadened ($Θ_D$ = 184 K), but no excess heat capacity was observed. The excess heat capacity, $C_ϕ$ (taken as the difference between the single crystal and polycrystal heat capacities) is well described in terms of collective-mode excitations above their respective pinning frequencies. This attribution is represented by a modified Debye spectrum with two cutoff frequencies, a pinning frequency, $ν_o$, for the pinned CDW (due to grain boundaries in the polycrystal), and a normal Debye acoustic frequency occurring in the single crystal. We explain the 50-year-old difference in Debye temperatures between heat capacity and ultrasonic measurements.
A temperature compensated MOSFET-C band-pass filter in 0.35 um CMOS technology
Creators: name: Miodrag, Brkić
name: Radić, Jelena
name: Nikolić, Kristina
name: Damnjanović, Mirjana
Publisher: name: figshare
Year: 2022
Subjects: subject: 90699 Electrical and Electronic Engineering not elsewhere classified
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: 23rd IEEE International Symposium on Design and Diagnostics of Electronic Circuits & Systems (DDECS’2020), 22-24 April 2020, Novi Sad, Serbia
A Galactic Origin for the Local Ionized X-ray Absorbers
Creators: name: Fang, Taotao
name: McKee, Christopher
name: Canizares, Claude
name: Wolfire, Mark
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Recent Chandra and XMM observations of distant quasars have shown strong local (z~0) X-ray absorption lines from highly ionized gas, primarily He-like oxygen. The nature of these X-ray absorbers, i.e., whether they are part of the hot gas associated with the Milky Way or part of the intragroup medium in the Local Group, remains a puzzle due to the uncertainties in the distance. We present in this paper a survey of 20 AGNs with Chandra and XMM archival data. About 40% of the targets show local OVII He-alpha absorption with column densities around 10^16 cm^-2; in particular, OVII absorption is present in all the high quality spectra. We estimate that the sky covering fraction of this OVII-absorbing gas is at least 63%, at 90% confidence, and likely to be unity given enough high-quality spectra. Based on (1) the expected number of absorbers along sight lines toward distant AGNs, (2) joint analysis with X-ray emission measurements, and (3) mass estimation, we argue that the observed X-ray absorbers are part of the hot gas associated with our Galaxy. Future observations will significantly improve our understanding of the covering fraction and provide robust test of this result.
description: 5 pages, 3 figures. Accepted by ApJ
The EUV variability of the luminous QSO HS 1700+6416
Creators: name: Reimers, D.
name: Hagen, H. -J.
name: Schramm, J.
name: Kriss, G. A.
name: Shull, J. M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report on the first observations of variations in UV (intrinsic EUV 330 A) flux of the luminous QSO HS 1700+6416 (z=2.72) over a decade. The amplitude of variations increases from +/-0.1 mag in the optical (R) to up to a factor of 3 at 1250 A. This is apparently an extension of the increase in amplitude of variations towards shorter wavelengths observed with IUE in low z AGN (Paltani & Courvoisier, 1996) to the EUV. The time-scale for variations with the largest amplitudes is >= 1/2 yr to years. We briefly discuss the consequences of the observed variations on the ionizing metagalactic UV background.
description: 4 pages, 3 figures
Quantifying material properties of cell monolayers by analyzing integer topological defects
Creators: name: Blanch-Mercader, Carles
name: Guillamat, Pau
name: Roux, Aurélien
name: Kruse, Karsten
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Tissues and Organs (q-bio.TO)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: In developing organisms, internal cellular processes generate mechanical stresses at the tissue scale. The resulting deformations depend on the material properties of the tissue, which can exhibit long-ranged orientational order and topological defects. It remains a challenge to determine these properties on the time scales relevant for developmental processes. Here, we build on the physics of liquid crystals to determine material parameters of cell monolayers. Specifically, we use a hydrodynamic description to characterize the stationary states of compressible active polar fluids around defects. We illustrate our approach by analyzing monolayers of C2C12 cells in small circular confinements, where they form a single topological defect with integer charge. We find that such monolayers exert compressive stresses at the defect centers, where localized cell differentiation and formation of three-dimensional shapes is observed.
description: 5 pages, 4 figures
An Embedding of the BV Quantization into an N=1 Local Superfield Formalism
Creators: name: Gitman, D. M.
name: Moshin, P. Yu.
name: Reshetnyak, A. A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We propose an N=1 superfield formulation of Lagrangian quantization in general hypergauges by extending a reducible gauge theory to a superfield model with a local dependence on a Grassmann parameter $θ$. By means of $θ$-local functions of the quantum and gauge-fixing actions in terms of Darboux coordinates on the antisymplectic manifold, we construct superfield generating functionals of Green's functions, including the effective action. We prove the gauge-independence of the S-matrix, obtain the Ward identities and establish a relation of the proposed local quantization with the BV method and the multilevel Batalin-Tyutin formalism.
description: 12 pages, LaTex, corrected typos, extended Introduction
Quantum degrees of freedom of a region of spacetime
Creators: name: Piazza, Federico
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The holographic principle and the thermodynamics of de Sitter space suggest that the total number of fundamental degrees of freedom associated with any finite-volume region of space may be finite. The naive picture of a short distance cut-off, however, is hardly compatible with the dynamical properties of spacetime, let alone with Lorentz invariance. Considering the regions of space just as general ``subsystems'' may help clarifying this problem. In usual QFT the regions of space are, in fact, associated with a tensor product decomposition of the total Hilbert space into ``subsystems'', but such a decomposition is given a priori and the fundamental degrees of freedom are labelled, already from the beginning, by the spacetime points. We suggest a new strategy to identify ``localized regions'' as ``subsystems'' in a way which is intrinsic to the total Hilbert-space dynamics of the quantum state of the fields.
description: 6 pages, talk given at the XXVIII Spanish Relativity Meeting, Oviedo Spain, to appear in the proceedings
Multiscale Fractal Analysis on EEG Signals for Music-Induced Emotion Recognition
Creators: name: Avramidis, Kleanthis
name: Zlatintsi, Athanasia
name: Garoufis, Christos
name: Maragos, Petros
Publisher: name: arXiv
Year: 2020
Subjects: subject: Signal Processing (eess.SP)
subject: Information Retrieval (cs.IR)
subject: Machine Learning (cs.LG)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Emotion Recognition from EEG signals has long been researched as it can assist numerous medical and rehabilitative applications. However, their complex and noisy structure has proven to be a serious barrier for traditional modeling methods. In this paper, we employ multifractal analysis to examine the behavior of EEG signals in terms of presence of fluctuations and the degree of fragmentation along their major frequency bands, for the task of emotion recognition. In order to extract emotion-related features we utilize two novel algorithms for EEG analysis, based on Multiscale Fractal Dimension and Multifractal Detrended Fluctuation Analysis. The proposed feature extraction methods perform efficiently, surpassing some widely used baseline features on the competitive DEAP dataset, indicating that multifractal analysis could serve as basis for the development of robust models for affective state recognition.
description: 5 pages, 3 figures, 3 tables, European Signal Processing Conference (EUSIPCO) 2021, Dublin, Ireland
A study of the personal income distribution in Australia
Creators: name: Banerjee, Anand
name: Yakovenko, Victor M.
name: Di Matteo, T.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Physics and Society (physics.soc-ph)
subject: General Finance (q-fin.GN)
subject: FOS: Physical sciences
subject: FOS: Economics and business

description: We analyze the data on personal income distribution from the Australian Bureau of Statistics. We compare fits of the data to the exponential, log-normal, and gamma distributions. The exponential function gives a good (albeit not perfect) description of 98% of the population in the lower part of the distribution. The log-normal and gamma functions do not improve the fit significantly, despite having more parameters, and mimic the exponential function. We find that the probability density at zero income is not zero, which contradicts the log-normal and gamma distributions, but is consistent with the exponential one. The high-resolution histogram of the probability density shows a very sharp and narrow peak at low incomes, which we interpret as the result of a government policy on income redistribution.
description: 7 pages, 4 figures, Proceedings of the Econophysics Colloquium, Canberra, 14-18 November 2005
Multidimensional Machine Learning Model to Calculate a COVID-19 Vulnerability Index
Creators: name: Rosero Perez, Paula Andrea
name: Realpe Gonzalez, Juan Sebastián
name: Salazar-Cabrera, Ricardo
name: Restrepo, David
name: López, Diego M.
name: Blobel, Bernd
Publisher: name: Universität Regensburg
Year: 2023
Subjects: subject: COVID-19; dataset; machine learning; vulnerability index
subject: 610 Medizin

description: In Colombia, the first case of COVID-19 was confirmed on 6 March 2020. On 13 March 2023, Colombia registered 6,360,780 confirmed positive cases of COVID-19, representing 12.18% of the total population. The National Administrative Department of Statistics (DANE) in Colombia published in 2020 a COVID-19 vulnerability index, which estimates the vulnerability (per city block) of being infected with COVID-19. Unfortunately, DANE did not consider multiple factors that could increase the risk of COVID-19 (in addition to demographic and health), such as environmental and mobility data (found in the related literature). The proposed multidimensional index considers variables of different types (unemployment rate, gross domestic product, citizens’ mobility, vaccination data, and climatological and spatial information) in which the incidence of COVID-19 is calculated and compared with the incidence of the COVID-19 vulnerability index provided by DANE. The collection, data preparation, modeling, and evaluation phases of the Cross-Industry Standard Process for Data Mining methodology (CRISP-DM) were considered for constructing the index. The multidimensional index was evaluated using multiple machine learning models to calculate the incidence of COVID-19 cases in the main cities of Colombia. The results showed that the best-performing model to predict the incidence of COVID-19 in Colombia is the Extra Trees Regressor algorithm, obtaining an R-squared of 0.829. This work is the first step toward a multidimensional analysis of COVID-19 risk factors, which has the potential to support decision making in public health programs. The results are also relevant for calculating vulnerability indexes for other viral diseases, such as dengue.
An exploration of the meaning of productivity in non-working men with a diagnosis of schizophrenia
Creators: name: Reinhardt, Lauralynn
Publisher: name: University of British Columbia
Year: 2009

description: The purpose of this study is to enhance the body'ofi knowledge that has been developed concerning the lives of non-working young men who have schizophrenia. It is concerned with how these men experience activities that constitute productive endeavors within the context of their lives given that they are not performing traditionally defined productive activities such as employment, education or volunteer work: Adhering to a narrative approach, a semi-structured interview was used to assist five men in telling their stories of productivity. Content and thematic analysis was used to explore the influence of their experiences on their personal meanings of productivity and how these meanings have affected their behavior. The relevance of this information to occupational therapy was also explored. The most significant theme was that of the. men performing a precarious balancing act of trying not get sick (have a relapse) .by working to occupy themselves and yet not become too stressed. Staying well was seen as the most important goal in their lives. Going from place to place, doing a number of activities, accomplishing a task and their faith in God were all seen as effective strategies to achieve this end.
Auf der Suche nach neuen Formen internationaler Zusammenarbeit in einer pluralistischen Welt
Creators: name: Heyde, Peter L.
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 16 Nr. 1 (1967): Ökumenische Rundschau, Band 16, Heft 1
Intercalated phosphorene for improved spintronic applications
Creators: name: Koley, S.
name: Basu, S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: In this work we study the intercalation of monolayer phosphorene with nitrogen, lithium and calcium for exploring prospects of spintronic applications. The electronic and the magnetic properties of the intercalated structure are investigated via density functional theory to obtain the band structure and the spin polarized density of states. Albeit the band structure data show vanishing band gap, a noticeable difference emerges in the densities of the up and the down spin states induced by the intercalants. To evaluate the performance of the intercalated phosphorene, the spintronic order parameter, measuring the asymmetry among the up and the down spin densities of states, is computed which clearly shows evolution of improved spintronic properties at large intercalant densities. Further, larger atomic numbers of the intercalants seem to aid the performance of phosphorene as a spintronic material.
Fluorescent Ly-alpha emission from the high-redshift intergalactic medium
Creators: name: Cantalupo, Sebastiano
name: Porciani, Cristiano
name: Lilly, Simon J.
name: Miniati, Francesco
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We combine a high-resolution hydro-simulation of the LambdaCDM cosmology with two radiative transfer schemes (for continuum and line radiation) to predict the properties, spectra and spatial distribution of fluorescent Ly-alpha emission at z~3. We focus on line radiation produced by recombinations in the dense intergalactic medium ionized by UV photons. In particular, we consider both a uniform background and the case where gas clouds are illuminated by a nearby quasar. We find that the emission from optically thick regions is substantially less than predicted from the widely used static, plane-parallel model. The effects induced by a realistic velocity field and by the complex geometric structure of the emitting regions are discussed in detail. We make predictions for the expected brightness and size distributions of the fluorescent sources.Our results account for recent null detections and can be used to plan new observational campaigns both in the field (to measure the intensity of the diffuse UV background) and in the proximity of bright quasars (to understand the origin of high colum-density absorbers).
description: 15 pages, 12 figures, accepted for publication in ApJ
Hodge and signature theorems for a family of manifolds with fibration boundary
Creators: name: Hunsicker, Eugenie
Publisher: name: arXiv
Year: 2005
Subjects: subject: Geometric Topology (math.GT)
subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 14F40; 58J10; 14F43

description: Let $\bar{M}$ be a manifold with boundary $Y$ which is the total space of a fibre bundle, and is defined by the vanishing of a boundary defining function, $x$. We prove $L^2$ Hodge and signature theorems for $M$ endowed with a metric of the form $dx^2 + x^{2c} h + k$, where $k$ is the lift to $Y$ of the metric on the base of the fibre bundle, $h$ is a two form on $Y$ which restricts to a metric on each fibre, and $0 \leq c \leq 1$. These metrics interpolate between the case when $c=0$, in which case the metric near the boundary is a cylinder, and the case where $c=1$, in which case the metric near the boundary is that of a cone bundle over the base of the boundary fibration. We show that the $L^2$ Hodge theorems for the cohomologies given by the maximal and minimal extensions of $d$ with respect to these metrics and the $L^2$ signature theorem for the image of the minimal cohomology in the maximal cohomology interpolate between known results for $L^2$ Hodge and signature theorems for cylindrical and cone bundle type metrics. In particular, the Hodge theorems all relate the related spaces of $L^2$ harmonic forms to intersection cohomology of varying perversities for $X$, the space formed from $\bar{M}$ by collapsing the fibres of $Y$ at the boundary. The signature theorem involves variations on the $τ$ invariant described by Dai.
description: 24 pages, 3 diagrams missing from end of document due to technical difficulties