cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Projected Push-Sum Gradient Descent-Ascent for Convex Optimization with Application to Economic Dispatch Problems
Creators: name: Zimmermann, Jan
name: Tatarenko, Tatiana
name: Willert, Volker
name: Adamy, Jürgen
Publisher: name: IEEE
Year: 2021

description: We propose a novel algorithm for solving convex, constrained and distributed optimization problems defined on multi-agent-networks, where each agent has exclusive access to a part of the global objective function. The agents are able to exchange information over a directed, weighted communication graph, which can be represented as a column-stochastic matrix. The algorithm combines an adjusted push-sum consensus protocol for information diffusion and a gradient descent-ascent on the local cost functions, providing convergence to the optimum of their sum. We provide results on a reformulation of the push-sum into single matrix updates and prove convergence of the proposed algorithm to an optimal solution, given standard assumptions in distributed optimization. The algorithm is applied to a distributed economic dispatch problem, in which the constraints can be expressed in local and global subsets.
Magnetic Accretion Onto White Dwarfs
Creators: name: Tovmassian, G. H.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The influence of the magnetic field on process of the accretion onto White Dwarfs in Cataclysmic Variables (CVs) is discussed. Except for the Polars or AM Her objects, the strength of magnetic field can not be measured directly in CVs by modern techniques. But there is growing evidence that most of the types of Cataclysmic Variables classified on the basis of their observational characteristics are behaving in one or the other way under the influence of the magnetic field of the accreting White Dwarf, among other things. Here, we discuss the bulk of CVs that are traditionally considered as non magnetic and review the properties that could be best explained by the magnetic governed accretion process.
description: 8 pages, 2 figures. To appear in the conference proceedings of `Interacting Binaries: Accretion, Evolution & Outcomes' (Cefalu, July 4-10 2004)
Atelier sur la transformation de l'agriculture en Afrique: Abidjan, Côte D'Ivoire, September 26-29, 1995
Creators: name: Ba, Moussa Batchily
name: Staatz, John M.
name: Farrelly, Laura L.
name: Camara, Youssouf
name: Dimithe, Georges
name: Ba, Moussa Batchily
name: Staatz, John M.
name: Farrelly, Laura L.
name: Camara, Youssouf
name: Dimithe, Georges
Publisher: name: Unknown
Year: 1999
Subjects: subject: International Development
subject: food security
subject: food policy
subject: agricultural transformation
subject: Africa

description: À l'initiative de l'USAID, la BAD, MSU et l’INSAH, une quarantaine de chercheurs, de décideurs politiques et d’opérateurs-terrain venus de 19 pays et représentants une vingtaine d'institutions Africaines ou internationales se sont retrouvés à Abidjan dans le cadre d'un atelier continental pour débattre sur le thème de la transformation de l'agriculture Africaine. Cet atelier a été parrainé par le Ministre de l'Enseignement Supérieur et de la Recherche Scientifique de la Côte d'Ivoire. L'atelier d'Abidjan s'est basé sur les réflexions précédentes portant sur les défis à relever (insécurité alimentaire, pauvreté, et dégradation de l’environnement) au cours du processus de stimulation de la transformation structurelle de l'agriculture en Afrique, notamment les discussions organisées par Winrock International, la Banque Mondiale, l'USAID (AFR/SD/PSGE/FSP), et l’IFPRI.
Supplemental Material _ Volition and reappraisal efficacy
Creators: name: Mazzola-Pomietto, Pascale
name: Lescalier, Lauriane
name: Deruelle, Christine
Publisher: name: figshare
Year: 2020
Subjects: subject: 170299 Cognitive Science not elsewhere classified
subject: FOS: Psychology
subject: Applied Psychology

description: Supplemental material of "Volition increases the efficacy of cognititve reappraisal but not of distraction"
The 2003/2004 superoutburst of SDSS J013701.06-091234.9
Creators: name: Imada, Akira
name: Kato, Taichi
name: Kubota, Kaori
name: Uemura, Makoto
name: Ishioka, Ryoko
name: Kiyota, Seiichiro
name: Kinugasa, Kenzo
name: Maehara, Hiroyuki
name: Nakajima, Kazuhiro
name: Monard, L. A. G. Berto
name: Starkey, Donn R.
name: Oksanen, Arto
name: Nogami, Daisaku
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report on time-resolved photometry of the superoutburst of an SU UMa-type dwarf nova, SDSS J013701.06-091234.9 in 2003 December-2004 January. The obtained light curves definitely show superhumps with a period of 0.056686 (12) d, which is one of the shortest superhump periods among those of SU UMa-type dwarf novae ever observed. Considering quiescent photometric studies, we estimated the fractional superhump excess to be 0.024. Spectroscopic observations by Szkody et al. (2003) provided evidence for TiO bands despite the short orbital period, implying that the system has a luminous secondary star. We draw a color-color diagram of SU UMa-type dwarf novae in quiescence using 2MASS archives, revealing that the location of this star in the color-color diagram is deviated from the general trend. The distance to the system was roughly estimated to be 300${\pm}$80 pc, using the empirical period-absolute magnitude relation and based on the proper motion.
description: 11 pages, 6 figures, 4 tables. Accepted for PASJ
Long range frustration in finite connectivity spin glasses: A mean field theory and its application to the random $K$-satisfiability problem
Creators: name: Zhou, Haijun
Publisher: name: arXiv
Year: 2004
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Computational Complexity (cs.CC)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Shortened abstract: A mean field theory of long range frustration is constructed for spin glass systems with quenched randomness of vertex--vertex connections and of spin--spin coupling strengths. This theory is applied to a spin glass model of the random $K$-satisfiability problem (K=2 or K=3). The zero--temperature phase diagram of the $\pm J$ Viana--Bray model is also determined, which is identical to that of the random 2-SAT problem. The predicted phase transition between a non-frustrated and a long--rangely frustrated spin glass phase might also be observable in real materials at a finite temperature.
description: Final version. Published in New Journal of Physics, freely available at http://www.njp.org/
Tachyon Condensation, Open-Closed Duality, Resolvents, and Minimal Bosonic and Type 0 Strings
Creators: name: Johnson, Clifford V.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Type 0A string theory in the (2,4k) superconformal minimal model backgrounds and the bosonic string in the (2,2k-1) conformal minimal models, while perturbatively identical in some regimes, may be distinguished non-perturbatively using double scaled matrix models. The resolvent of an associated Schrodinger operator plays three very important interconnected roles, which we explore perturbatively and non-perturbatively. On one hand, it acts as a source for placing D-branes and fluxes into the background, while on the other, it acts as a probe of the background, its first integral yielding the effective force on a scaled eigenvalue. We study this probe at disc, torus and annulus order in perturbation theory, in order to characterize the effects of D-branes and fluxes on the matrix eigenvalues. On a third hand, the integrated resolvent forms a representation of a twisted boson in an associated conformal field theory. The entire content of the closed string theory can be expressed in terms of Virasoro constraints on the partition function, which is realized as wavefunction in a coherent state of the boson. Remarkably, the D-brane or flux background is simply prepared by acting with a vertex operator of the twisted boson. This generates a number of sharp examples of open-closed duality, both old and new. We discuss whether the twisted boson conformal field theory can usefully be thought of as another holographic dual of the non-critical string theory.
description: 37 pages, some figures, LaTeX
Un recueil de sentences attributé à Issac le Syrien
Creators: name: Besson, Marius
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 1 Nr. 2 (1901): Oriens christianus, Band 1, Heft 2
Greybody factors of black holes in dRGT massive gravity coupled with nonlinear electrodynamics
Creators: name: Kanzi, Sara
name: Mazharimousavi, S. Habib
name: Sakallı, İzzet
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In the context of the dRGT massive gravity coupled with nonlinear electrodynamics, we present new dRGT black hole solutions. Together with the thermodynamical properties of the solutions, we study the greybody factor of the corresponding black hole solution. To this end, we compute the rigorous bound on the greybody factor for the obtained dRGT black holes. The obtained results are graphically represented for different values of the theory's physical parameters. Our analysis shows that the charged dRGT black holes of nonlinear electrodynamics evaporate quicker than the charged dRGT black holes originated from linear electrodynamics.
description: 19 pages, 4 figures
Berniniella Balogh 1983
Creators: name: Behan-Pelletier, Valerie M.
name: Lindo, Zoë
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Sarcoptiformes
Oppiidae
Berniniella

description: Berniniella sp.
 Geographic Location: NS: Cape Breton Highlands NP (Behan-Pelletier 2010; Behan-Pelletier et al. 1987).
 Genus Brachioppiella Hammer, 1962
description: Published as part of Behan-Pelletier, Valerie M. & Lindo, Zoë, 2019, Checklist of oribatid mites (Acari: Oribatida) of Canada and Alaska, pp. 1-180 in Zootaxa 4666 (1) on page 87, DOI: 10.11646/zootaxa.4666.1.1, http://zenodo.org/record/4000595
Effects of Cash Crop Production on Food Crop Productivity in Zimbabwe: Synergies or Trade-offs?
Creators: name: Govereh, Jones
name: Jayne, Thomas S.
name: Govereh, Jones
name: Jayne, Thomas S.
Publisher: name: Unknown
Year: 1999
Subjects: subject: Crop Production/Industries
subject: Productivity Analysis
subject: food security
subject: food policy
subject: cash crop production
subject: food crop productivity
subject: Zimbabwe

description: This paper studies the dynamics between cash cropping and food crop productivity in Gokwe North District in Zimbabwe, a major cotton producing area. The main research issues were: (1) to identify the determinants of commercialized crop production at the household level; and (2) to determine the effect of increasing crop commercialization on household food productivity. The paper derives a household crop commercialization index, defined as the ratio of crop sales to total crop production. Econometric models were developed for identifying the determinants of household-level commercialization and for measuring its effects on food crop productivity.
$({\Bbb Z}_2)^k$-actions with $w(F)=1$
Creators: name: Lü, Zhi
Publisher: name: arXiv
Year: 2005
Subjects: subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: 57R85, 57S17, 55N22

description: Suppose that $(Φ, M^n)$ is a smooth $({\Bbb Z}_2)^k$-action on a closed smooth $n$-dimensional manifold such that all Stiefel-Whitney classes of the tangent bundle to each connected component of the fixed point set $F$ vanish in positive dimension. This paper shows that if $\dim M^n>2^k\dim F$ and each $p$-dimensional part $F^p$ possesses the linear independence property, then $(Φ, M^n)$ bounds equivariantly, and in particular, $2^k\dim F$ is the best possible upper bound of $\dim M^n$ if $(Φ, M^n)$ is nonbounding.
description: 11 pages
Bit Parallel 6T SRAM In-memory Computing with Reconfigurable Bit-Precision
Creators: name: Lee, Kyeongho
name: Jeong, Jinho
name: Cheon, Sungsoo
name: Choi, Woong
name: Park, Jongsun
Publisher: name: arXiv
Year: 2020
Subjects: subject: Hardware Architecture (cs.AR)
subject: FOS: Computer and information sciences

description: This paper presents 6T SRAM cell-based bit-parallel in-memory computing (IMC) architecture to support various computations with reconfigurable bit-precision. In the proposed technique, bit-line computation is performed with a short WL followed by BL boosting circuits, which can reduce BL computing delays. By performing carry-propagation between each near-memory circuit, bit-parallel complex computations are also enabled by iterating operations with low latency. In addition, reconfigurable bit-precision is also supported based on carry-propagation size. Our 128KB in/near memory computing architecture has been implemented using a 28nm CMOS process, and it can achieve 2.25GHz clock frequency at 1.0V with 5.2% of area overhead. The proposed architecture also achieves 0.68, 8.09 TOPS/W for the parallel addition and multiplication, respectively. In addition, the proposed work also supports a wide range of supply voltage, from 0.6V to 1.1V.
description: 6 pages
Macro Trends and Determinates of Fertilizer Use in Sub-Saharan Africa
Creators: name: Naseem, Anwar
name: Kelly, Valerie A.
name: Naseem, Anwar
name: Kelly, Valerie A.
Publisher: name: Unknown
Year: 1999
Subjects: subject: Crop Production/Industries
subject: Farm Management
subject: food security
subject: food policy
subject: fertilizer use
subject: sub-Saharan Africa

description: To reverse the declining trends in soil fertility levels in Sub-Saharan Africa (SSA), the use of fertilizers and other land augmenting technologies needs to increase. While overall fertilizer consumption in SSA has increased by as much as 200% from 1970 levels, the growth has been highly variable across countries, regions and time. Fertilizer use is significantly lower than that observed in other parts of the developing world, especially Asia, where fertilizer (along with other productivity enhancing technologies) has been credited with the large increases in yields. Moreover data for the 1990s suggests that overall fertilizer consumption in SSA has been declining. Designing appropriate policies and interventions to stimulate fertilizer demand and supply, calls for a good understanding of past trends and factors that have been associated with changes in use. The objective of this paper is to seek a better understanding of the dynamics of fertilizer use.
Brachioppiella periculosa Hammer 1962
Creators: name: Behan-Pelletier, Valerie M.
name: Lindo, Zoë
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Sarcoptiformes
Oppiidae
Brachioppiella
Brachioppiella periculosa

description: Brachioppiella periculosa Hammer, 1962
 Geographic Location: QC: St-Paulin (Doblas-Miranda et al. 2014).
 Distribution: Holarctic; Neotropical.
 Genus Discoppia Balogh, 1983
description: Published as part of Behan-Pelletier, Valerie M. & Lindo, Zoë, 2019, Checklist of oribatid mites (Acari: Oribatida) of Canada and Alaska, pp. 1-180 in Zootaxa 4666 (1) on page 87, DOI: 10.11646/zootaxa.4666.1.1, http://zenodo.org/record/4000595
Successes and Challenges of Food Market Reform: Experiences from Kenya, Mozambique, Zambia, and Zimbabwe
Creators: name: Jayne, Thomas S.
name: Mukumbu, Mulinge
name: Chisvo, Munhamo
name: Tschirley, David L.
name: Weber, Michael T.
name: Zulu, Ballard
name: Johansson, Robert C.
name: Santos, Paula Mota
name: Soroko, David
name: Jayne, Thomas S.
name: Mukumbu, Mulinge
name: Chisvo, Munhamo
name: Tschirley, David L.
name: Weber, Michael T.
name: Zulu, Ballard
name: Johansson, Robert C.
name: Santos, Paula Mota
name: Soroko, David
Publisher: name: Unknown
Year: 1999
Subjects: subject: Agricultural and Food Policy
subject: Marketing
subject: FOS: Economics and business
subject: food security
subject: food policy
subject: food market reform

description: This paper describes the different food policy courses pursued in recent years by four countries in Eastern and Southern Africa, and documents their differential effects on farmer and consumer behavior. Results are based primarily on a survey and synthesis of recent analysis. The paper highlights lessons learned from the different policy paths pursued in each country, and thus provides insights into the costs and benefits of alternative strategies for promoting national food security and enhancing producer and consumer options.
rosdiablatiff01
Creators: name: Latiff, Rosdi Ab
Publisher: name: figshare
Year: 2020
Subjects: subject: Applied Computer Science
subject: 80201 Analysis of Algorithms and Complexity
subject: FOS: Computer and information sciences
subject: Computation Theory and Mathematics
subject: 80401 Coding and Information Theory
subject: Artificial Intelligence and Image Processing
subject: 80299 Computation Theory and Mathematics not elsewhere classified
subject: 80103 Computer Graphics
subject: Computer Software
subject: 80104 Computer Vision
subject: 80303 Computer System Security
subject: 80302 Computer System Architecture
subject: 80402 Data Encryption
subject: 80602 Computer-Human Interaction
subject: FOS: Psychology
subject: 80403 Data Structures
subject: Distributed Computing
subject: 80505 Web Technologies (excl. Web Search)
subject: 80111 Virtual Reality and Related Simulation
subject: Theoretical Computer Science
subject: 80308 Programming Languages
subject: 80307 Operating Systems
subject: 80306 Open Software
subject: 80503 Networking and Communications
subject: 80502 Mobile Technologies
subject: 80612 Interorganisational Information Systems and Web Services
subject: 80611 Information Systems Theory
subject: 80610 Information Systems Organisation
subject: 80704 Information Retrieval and Web Search
subject: FOS: Media and communications
subject: 80607 Information Engineering and Theory
subject: 80606 Global Information Systems
subject: 80105 Expert Systems
subject: 80605 Decision Support and Group Support Systems
subject: 80599 Distributed Computing not elsewhere classified
subject: 80604 Database Management
subject: 80304 Concurrent Programming
subject: 80501 Distributed and Grid Systems
subject: 80205 Numerical Computation
subject: 80708 Records and Information Management (excl. Business Records and Information Management)
subject: 80709 Social and Community Informatics
subject: 80504 Ubiquitous Computing
subject: Biotechnology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60308 Life Histories
subject: FOS: Biological sciences
subject: Medicine
subject: Neuroscience
subject: Plant Biology
subject: 60702 Plant Cell and Molecular Biology
subject: 60412 Quantitative Genetics (incl. Disease and Trait Mapping Genetics)
subject: 60112 Structural Biology (incl. Macromolecular Modelling)
subject: 60114 Systems Biology
subject: Structural Biology
subject: Stem Cells

description:
karya ini dilesenkan di bawah Lesen Atribusi 3.0 Tidak mudah alih Creative Commons.
Boundaries of Varieties in Projective Manifolds
Creators: name: Harvey, F. Reese
name: Lawson, H. Blaine
Publisher: name: arXiv
Year: 2005
Subjects: subject: Complex Variables (math.CV)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 32C25, 51N15, 32V99

description: We give a characterization of the boundaries of holomorphic chains in complex projective space in terms of certain non-linear moment conditions. This extends previous work of the authors and complements results of Dolbeault and Henkin.
Global Hydromagnetic Simulations of Protoplanetary Disks with Stellar Irradiation and Simplified Thermochemistry
Creators: name: Gressel, Oliver
name: Ramsey, Jon P.
name: Brinch, Christian
name: Nelson, Richard P.
name: Turner, Neal J.
name: Bruderer, Simon
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Outflows driven by large-scale magnetic fields likely play an important role in the evolution and dispersal of protoplanetary disks, and in setting the conditions for planet formation. We extend our 2-D axisymmetric non-ideal MHD model of these outflows by incorporating radiative transfer and simplified thermochemistry, with the twin aims of exploring how heating influences wind launching, and illustrating how such models can be tested through observations of diagnostic spectral lines. Our model disks launch magnetocentrifugal outflows primarily through magnetic tension forces, so the mass-loss rate increases only moderately when thermochemical effects are switched on. For typical field strengths, thermochemical and irradiation heating are more important than magnetic dissipation. We furthermore find that the entrained vertical magnetic flux diffuses out of the disk on secular timescales as a result of non-ideal MHD. Through post-processing line radiative transfer, we demonstrate that spectral line intensities and moment-1 maps of atomic oxygen, the HCN molecule, and other species show potentially observable differences between a model with a magnetically driven outflow and one with a weaker, photoevaporative outflow. In particular, the line shapes and velocity asymmetries in the moment-1 maps could enable the identification of outflows emanating from the disk surface.
description: 35 pages, 20 figures, accepted for publication in ApJ
Common-envelope evolution with an asymptotic giant branch star
Creators: name: Sand, C.
name: Ohlmann, S. T.
name: Schneider, F. R. N.
name: Pakmor, R.
name: Roepke, F. K.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Common-envelope phases are decisive for the evolution of many binary systems. Of particular interest are cases with asymptotic giant branch (AGB) primary stars, because they are thought to be progenitors of various astrophysical transients. In three-dimensional hydrodynamic simulations with the moving-mesh code AREPO, we study the common-envelope evolution of a $1.0\,M_{\odot}$ early-AGB star with companions of different masses. Although the stellar envelope of the AGB star is less tightly bound than that of a red giant, we find that the release of orbital energy of the core binary is insufficient to eject more than about twenty percent of the envelope mass. Ionization energy released in the expanding envelope, however, can lead to complete envelope ejection. Because recombination proceeds largely at high optical depths in our simulations, it is likely that this effect indeed plays a significant role in the considered systems. The efficiency of mass loss and the final orbital separation of the core binary system depend on the mass ratio between the companion and the primary star. Our results suggest a linear relation between the ratio of final to initial orbital separation and this parameter.
description: 12 pages, 9 figures, 5 tables; accepted for publication by A&A
Surface criticality in random field magnets
Creators: name: Laurson, L.
name: Alava, M. J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The boundary-induced scaling of three-dimensional random field Ising magnets is investigated close to the bulk critical point by exact combinatorial optimization methods. We measure several exponents describing surface criticality: $β_1$ for the surface layer magnetization and the surface excess exponents for the magnetization and the specific heat, $β_s$ and $α_s$. The latter ones are related to the bulk phase transition by the same scaling laws as in pure systems, but only with the same violation of hyperscaling exponent $θ$ as in the bulk. The boundary disorders faster than the bulk, and the experimental and theoretical implications are discussed.
description: 6 pages, 9 figures, to appear in Phys. Rev. B
Higher-spin symmetry vs. boundary locality, and a rehabilitation of dS/CFT
Creators: name: David, Adrian
name: Neiman, Yasha
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider the holographic duality between 4d type-A higher-spin gravity and a 3d free vector model. It is known that the Feynman diagrams for boundary correlators can be encapsulated in an HS-algebraic twistorial expression. This expression can be evaluated not just on separate boundary insertions, but on entire finite source distributions. We do so for the first time, and find that the result Z_HS disagrees with the usual CFT partition function. While such disagreement was expected due to contact corrections, it persists even in their absence. We ascribe it to a confusion between on-shell and off-shell boundary calculations. In Lorentzian boundary signature, this manifests via wrong relative signs for Feynman diagrams with different permutations of the source points. In Euclidean, the signs are instead ambiguous, spoiling would-be linear superpositions. Framing the situation as a conflict between boundary locality and HS symmetry, we sacrifice locality and choose to take Z_HS seriously. We are rewarded by the dissolution of a long-standing pathology in higher-spin dS/CFT. Though we lose the connection to the local CFT, the precise form of Z_HS can be recovered from first principles, by demanding a spin-local boundary action.
description: 72 pages; v2: corrected chronology of the references on bulk non-locality
Higher Derived Brackets for Arbitrary Derivations
Creators: name: Voronov, Theodore Th.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Algebra (math.QA)
subject: Mathematical Physics (math-ph)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We introduce and study a construction of higher derived brackets generated by a (not necessarily inner) derivation of a Lie superalgebra. Higher derived brackets generated by an element of a Lie superalgebra were introduced in our earlier work. Examples of higher derived brackets naturally appear in geometry and mathematical physics. From a totally different viewpoint, we show that higher derived brackets arise when one wants to turn the inclusion map of a subalgebra of a differential Lie superalgebra, with a given complementary subalgebra, into a fibration. (For a non-Abelian complementary subalgebra, this leads to a generalization of $L_{\infty}$-algebras with dropped or weakened (anti)symmetry of the brackets.)
description: 24 pages. LaTeX 2e. In the second version a minor style editing was done. Uses a package for commutative diagrams, diagrams.sty, available at ftp://ftp.dante.de/pub/tex/macros/generic/diagrams/taylor/ Extra editing (style, misprints...) in the third version
Statistiques agricoles: Production Agricole, Elevage, Superficies et Utilisation des terres, Année agricole 2001
Creators: name: Nyarwaya, Jean Baptiste
name: Shingiro, Emmanuel
name: Mpyisi, Edson
name: Nyarwaya, Jean Baptiste
name: Shingiro, Emmanuel
name: Mpyisi, Edson
Publisher: name: Unknown
Year: 2001
Subjects: subject: Farm Management
subject: food security
subject: food policy
subject: Rwanda
subject: statistics

description: Food Security Research Project (FSRP) and Division des Statistiques Agricoles (DSA) Ministère de l’Agricuture, de l’Elevage et des Forêts, MINAGRI
Eine jakobitische "Vita" des Nestorius
Creators: name: Goeller, Emil
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 1 Nr. 2 (1901): Oriens christianus, Band 1, Heft 2
Discoppia Balogh 1983
Creators: name: Behan-Pelletier, Valerie M.
name: Lindo, Zoë
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Sarcoptiformes
Oppiidae
Discoppia

description: Discoppia sp.
 Geographic Location: BC: coastal temperate rainforest (Lindo & Clayton 2011); AB: Roy Berg Kinsella Research Ranch (Newton 2013).
 Genus Dissorhina Hull, 1916
description: Published as part of Behan-Pelletier, Valerie M. & Lindo, Zoë, 2019, Checklist of oribatid mites (Acari: Oribatida) of Canada and Alaska, pp. 1-180 in Zootaxa 4666 (1) on page 87, DOI: 10.11646/zootaxa.4666.1.1, http://zenodo.org/record/4000595
Noise Characteristics of Feed Forward Loops
Creators: name: Ghosh, Bhaswar
name: Karmakar, Rajesh
name: Bose, Indrani
Publisher: name: arXiv
Year: 2004
Subjects: subject: Molecular Networks (q-bio.MN)
subject: Other Condensed Matter (cond-mat.other)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Other Quantitative Biology (q-bio.OT)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: A prominent feature of gene transcription regulatory networks is the presence in large numbers of motifs, i.e, patterns of interconnection, in the networks. One such motif is the feed forward loop (FFL) consisting of three genes X, Y and Z. The protein product of x of X controls the synthesis of protein product y of Y. Proteins x and y jointly regulate the synthesis of z proteins from the gene Z. The FFLs, depending on the nature of the regulating interactions, can be of eight different types which can again be classified into two categories: coherent and incoherent. In this paper, we study the noise characteristics of FFLs using the Langevin formalism and the Monte Carlo simulation technique based on the Gillespie algorithm. We calculate the variances around the mean protein levels in the steady states of the FFLs and find that, in the case of coherent FFLs, the most abundant FFL, namely, the Type-1 coherent FFL, is the least noisy. This is however not so in the case of incoherent FFLs. The results suggest possible relationships between noise, functionality and abundance.
description: 17 pages
Graptoppia Balogh 1983
Creators: name: Behan-Pelletier, Valerie M.
name: Lindo, Zoë
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Sarcoptiformes
Oppiidae
Graptoppia

description: Graptoppia sp.
 Geographic Location and Habitats: QC: Abitibi, boreal mixedwood forest (Déchêne & Buddle 2009, 2010).
 Genus Lanceoppia Balogh, 1965
description: Published as part of Behan-Pelletier, Valerie M. & Lindo, Zoë, 2019, Checklist of oribatid mites (Acari: Oribatida) of Canada and Alaska, pp. 1-180 in Zootaxa 4666 (1) on page 87, DOI: 10.11646/zootaxa.4666.1.1, http://zenodo.org/record/4000595
Reaction enthalpies of metal-polyimide interface formation observed by calorimetry
Creators: name: Murdey, Richard
Publisher: name: University of British Columbia
Year: 2009

description: A calorimeter has been developed to study metal-polymer interfaces in ultrahigh vacuum (UHV) conditions. Metal atoms are pulsewise deposited on a polymer substrate, gradually forming a metallic overlayer, while the reaction heat is measured in-situ with a pyroelectric sensor. Differential enthalpies of interface formation are derived from the calorimetry data and reported as a function of metal coverage. The ability of the instrument to resolve the underlying chemical reactions and growth morphology that characterize these interfacial systems is confirmed by the widely different enthalpy curves observed for each of the three metals studied in the present work - calcium, chromium and copper - deposited on PMDA-ODA polyimide substrates and the correspondingly distinct conclusions about the interfacial reactivity that were made in each case: Strong binding was discovered at the interface between calcium and polyimide. A calcium-polyimide complex with a binding energy of 600 ± 20 kJ/mol is suggested from the high initial intensity and exponential decay of the observed enthalpies with increasing metal coverage. The surface density of calcium binding sites was estimated at 4.1 nm- 2 . A more complicated reactivity was observed for the chromium-polyimide interface. Reaction enthalpies of approximately 60 ± 20 kJ/mol were observed at low coverages, six times lower than the enthalpy of formation of bulk chromium metal. This indicates the creation of a thermodynamically unstable interface. Chromium deposition apparently induces an endothermic disruption of the polyimide surface, which both lowers the net reaction enthalpy and suppresses the formation of metal-metal bonds. The copper results, meanwhile, are consistent with the formation of spherical metal clusters. The calorimeter records the change in surface energy from which the physical properties of the metal clusters, such as the cluster size, can be determined as a function of coverage.
Increasing distillable key rate from bound entangled states by using local filtration
Creators: name: Mishra, Mayank
name: Sengupta, Ritabrata
name: Arvind
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We show the enhancement of distillable key rate for quantum key distribution(QKD), by local filtering, for several bound entangled states. Through our work it becomes evident that the local filtration operations, while transforming one bound entangled state to another, have the potential to increase the utility of the new state for QKD. We demonstrate three examples of `one way distillable key rate' enhancement by local filtering and in this process, discover new bound entangled states which are key distillable.
description: Final version minor changes
title: Aufbau, Bildung und Wachstum der Kathode-Elektrolyt Grenzfläche in Li-Ionen Batterien: Einsichten durch XPS Grenzflächenanalyse
Creators: name: Schulz, Natalia
Publisher: name: UNSPECIFIED
Year: 2021

description: In der vorliegenden Arbeit werden Reaktionsschichten (engl. CEI) zwischen der Kathode vom Typ LiMO2 (M = Übergangsmetall) und Elektrolyt in Li-Ionen-Batterien untersucht. Hierzu wurde Lithiumcobaltoxid als Kathodenmaterial verwendet. Zyklierte kommerzielle Kompositkathoden wurden in Abhängigkeit von der räumlichen Lage des Kathoden-Partikelmaterials innerhalb des Komposits analysiert. Modellkathoden mit unterschiedlicher Oberflächenbeschaffenheit und Reaktionsschichten wurden untersucht. Die Modellkathoden waren Presslinge mit einer passivierten Oberfläche (durch Luft) und Dünnschichten mit einer katalytisch aktiven Oberfläche. Die Presslinge wurden aus kommerziellen Kathoden-Partikelmaterial und die Dünnschichten mittels Kathodenzerstäubung hergestellt. Die Modellkathoden wurden mit kommerziellen Batterieelektrolyt, entsprechenden Lösungsmitteln und typischen Elektrolytverunreinigung bei Raumtemperatur exponiert. Die Oberflächenchemie wurde mittels der oberflächensensitiven Röntgenphotoelektronenspektroskopie (engl. XPS) analysiert. Um die Richtigkeit der spektralen Zuordnung sicherzustellen, wurden Referenzspektren spezifischer Referenzmaterialien erstellt. Anhand der Modellexperimente und Referenzmessungen werden die Zersetzungs- und Reaktionsprodukte der Elektrolytbestandteile und des Kathodenmaterials an der Grenzfläche bestimmt. Mittels der Daten können grundlegende Informationen über die Wechselwirkung zwischen Kathode und Elektrolyt gewonnen und die Reaktivität an der Grenzfläche bestimmt werden. Dies ermöglicht ein detaillierteres Verständnis vom CEI Aufbau, Bildung, Wachstum und der Einflussfaktoren.
A Systematic Search for Periodicities in RXTE/ASM Data
Creators: name: Wen, Linqing
name: Levine, Alan M.
name: Corbet, Robin H. D.
name: Bradt, Hale V.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the results of a systematic search in 8.5 years of Rossi X-ray Timing Explorer All-Sky Monitor data for evidence of periodicities. The search was conducted by application of the Lomb-Scargle periodogram to the light curves of each of 458 actually or potentially detected sources in each of four energy bands (1.5-3 keV, 3-5 keV, 5-12 keV, and 1.5-12 keV). A whitening technique was applied to the periodograms before evaluation of the statistical significance of the powers. We discuss individual detections with focus on relatively new findings.
description: 61 pages, 32 figures, accepted for publication in ApJS
Abûl-l-Barakâts nichtgriechisches Verzeichnis der 70 Jünger
Creators: name: Baumstark, Anton
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 1 Nr. 2 (1901): Oriens christianus, Band 1, Heft 2
Lanceoppia Balogh 1965
Creators: name: Behan-Pelletier, Valerie M.
name: Lindo, Zoë
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Sarcoptiformes
Oppiidae
Lanceoppia

description: Lanceoppia sp.
 Geographic Location: Canada: Hammer (1969).
 Genus Lasiobelba Aoki, 1959
description: Published as part of Behan-Pelletier, Valerie M. & Lindo, Zoë, 2019, Checklist of oribatid mites (Acari: Oribatida) of Canada and Alaska, pp. 1-180 in Zootaxa 4666 (1) on page 87, DOI: 10.11646/zootaxa.4666.1.1, http://zenodo.org/record/4000595
Efficient high-fidelity quantum computation using matter qubits and linear optics
Creators: name: Barrett, Sean D.
name: Kok, Pieter
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a practical, scalable, and efficient scheme for quantum computation using spatially separated matter qubits and single photon interference effects. The qubit systems can be NV-centers in diamond, Pauli-blockade quantum dots with an excess electron or trapped ions with optical transitions, which are each placed in a cavity and subsequently entangled using a double-heralded single-photon detection scheme. The fidelity of the resulting entanglement is extremely robust against the most important errors such as detector loss, spontaneous emission, and mismatch of cavity parameters. We demonstrate how this entangling operation can be used to efficiently generate cluster states of many qubits, which, together with single qubit operations and readout, can be used to implement universal quantum computation. Existing experimental parameters indicate that high fidelity clusters can be generated with a moderate constant overhead.
description: 5 pages, 3 figures, broader introduction and improved scalability of cluster state generation
The footprint of large scale cosmic structure on the ultra-high energy cosmic ray distribution
Creators: name: Cuoco, A.
name: Abrusco, R. D'
name: Longo, G.
name: Miele, G.
name: Serpico, P. D.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Current experiments collecting high statistics in ultra-high energy cosmic rays (UHECRs) are opening a new window on the universe. In this work we discuss a large scale structure model for the UHECR origin which evaluates the expected anisotropy in the UHECR arrival distribution starting from a given astronomical catalogue of the local universe. The model takes into account the main selection effects in the catalogue and the UHECR propagation effects. By applying this method to the IRAS PSCz catalogue, we derive the minimum statistics needed to significatively reject the hypothesis that UHECRs trace the baryonic distribution in the universe, in particular providing a forecast for the Auger experiment.
description: 21 pages, 14 figures. Reference added, minor changes, matches published version
Drag Reduction by Polymer Additives in Decaying Turbulence
Creators: name: Kalelkar, Chirag
name: Govindarajan, Rama
name: Pandit, Rahul
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chaotic Dynamics (nlin.CD)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We present results from a systematic numerical study of decaying turbulence in a dilute polymer solution by using a shell-model version of the FENE-P equations. Our study leads to an appealing definition of drag reduction for the case of decaying turbulence. We exhibit several new results, such as the potential-energy spectrum of the polymer, hitherto unobserved features in the temporal evolution of the kinetic-energy spectrum, and characterize intermittency in such systems. We compare our results with the GOY shell model for fluid turbulence.
description: 4 pages RevTex4, 7 figures, accepted for publication in Physical Review E
Expulsion from structurally balanced paradise
Creators: name: Malarz, Krzysztof
name: Wołoszyn, Maciej
Publisher: name: arXiv
Year: 2020
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We perform simulations of structural balance evolution on a triangular lattice using the heat-bath algorithm. In contrast to similar approaches---but applied to analysis of complete graphs---the triangular lattice topology successfully prevents the occurrence of even partial Heider balance. Starting with the state of Heider's paradise, it is just a matter of time when the evolution of the system leads to an unbalanced and disordered state. The time of the system relaxation does not depend on the system size. The lack of any signs of a balanced state was not observed in earlier investigated systems dealing with the structural balance.
description: 5 pages with 6 figures
Effects of Agricultural Commercialization on Food Crop Input Use and Productivity in Kenya
Creators: name: Strasberg, Paul J.
name: Jayne, Thomas S.
name: Yamano, Takashi
name: Nyoro, James K.
name: Karanja, Daniel David
name: Strauss, John
name: Strasberg, Paul J.
name: Jayne, Thomas S.
name: Yamano, Takashi
name: Nyoro, James K.
name: Karanja, Daniel David
name: Strauss, John
Publisher: name: Unknown
Year: 1999
Subjects: subject: Crop Production/Industries
subject: Productivity Analysis
subject: food security
subject: food policy
subject: food crop productivity
subject: food crop input

description: The objective of this report is to analyze the effects of smallholder commercialization on food crop input use and productivity in rural Kenya. The main research issues were: (1) To examine the determinants of smallholder fertilizer use on food crops, with a focus on the effects of household and regional agricultural commercialization; (2) To examine the determinants of food crop productivity, again with a focus on the effects of commercialization; and (3) To discuss the implications of the findings for policy and additional research necessary to improve the contribution of cash cropping to rural food productivity growth and food security. A main premise of the paper is that the effects of commercialization are not uniform and cannot be generalized. The effects are hypothesized to differ both according to differences in the institutional/contractual arrangements between firms and smallholders, management decisions, and the level of credit and extension support provided to smallholders by the various private and parastatal firms involved in promoting smallholder cash crops.
Incentives for Fertilizer Use in Sub-Saharan Africa: A Review of Empirical Evidence on Fertilizer Response and Profitability
Creators: name: Yanggen, David
name: Kelly, Valerie A.
name: Reardon, Thomas
name: Naseem, Anwar
name: Yanggen, David
name: Kelly, Valerie A.
name: Reardon, Thomas
name: Naseem, Anwar
Publisher: name: Unknown
Year: 1998
Subjects: subject: Crop Production/Industries
subject: food security
subject: food policy
subject: fertilizer use
subject: sub-Saharan Africa

description: This research addresses two questions: Why is fertilizer not yet fulfilling its potential as a major stimulus to agricultural productivity in SSA? What can be done to improve the situation? Our answers are based on an extensive review of fertilizer response, profitability, and policy literature as well as some analysis of crop budgets and aggregate national statistics on fertilizer consumption. Much of the debate about fertilizer use in SSA focuses on two issues: whether the profit incentive is adequate and, if so, whether farmers have the capacity to access and use it.
Lasiobelba Aoki 1959
Creators: name: Behan-Pelletier, Valerie M.
name: Lindo, Zoë
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Sarcoptiformes
Oppiidae
Lasiobelba

description: Lasiobelba sp.
 Geographic Location and Habitats: ON: 3 km south of Guelph (Broadbent & Tomlin 1979).
 Genus Lauroppia Subías and Mínguez, 1986
description: Published as part of Behan-Pelletier, Valerie M. & Lindo, Zoë, 2019, Checklist of oribatid mites (Acari: Oribatida) of Canada and Alaska, pp. 1-180 in Zootaxa 4666 (1) on page 88, DOI: 10.11646/zootaxa.4666.1.1, http://zenodo.org/record/4000595
What Makes Agricultural Intensification Profitable for Mozambican Smallholders? An Appraisal of the Inputs Subsector and the 1996/97 DNER/SG2000 Program
Creators: name: Howard, Julie A.
name: Jeje, Jose Jaime
name: Tschirley, David L.
name: Strasberg, Paul J.
name: Crawford, Eric W.
name: Weber, Michael T.
name: Howard, Julie A.
name: Jeje, Jose Jaime
name: Tschirley, David L.
name: Strasberg, Paul J.
name: Crawford, Eric W.
name: Weber, Michael T.
Publisher: name: Unknown
Year: 1998
Subjects: subject: Farm Management
subject: food security
subject: food policy
subject: improved technologies

description: This report summarizes an appraisal of input utilization and marketing in Mozambique, focusing on the following research questions: (1) What are current smallholder yields for major commodities, and what is the potential for increasing yields through the use of improved technologies? (2) To what extent are improved technologies already being used by smallholders, and is the use of improved technologies profitable? (3) How are improved seeds, fertilizer and pesticides currently produced and distributed? and (4) What are the key constraints and opportunities for increasing the use of improved technologies by smallholders?