cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A Methodology to manage victim components using CBO measure
Creators: name: Basha, N. Md. Jubair
name: Moiz, Salman Abdul
Publisher: name: arXiv
Year: 2012
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: The current practices of software industry demands development of a software within time and budget which is highly productive. The traditional approach of developing a software from scratch requires considerable amount of effort. To overcome the drawback a reuse drive software development approach is adopted. However there is a dire need for realizing effective software reuse. This paper presents several measures of reusability and presents a methodology of reconfiguring the victim components. The CBO measure helps in identifying the component to be reconfigured. The proposed strategy is simulated using HR portal domain specific component system.
description: 10 pages, 3 figures. arXiv admin note: text overlap with arXiv:1202.5609
Cartography of high-dimensional flows: A visual guide to sections and slices
Creators: name: Cvitanovic, Predrag
name: Borrero-Echeverry, Daniel
name: Carroll, Keith M.
name: Robbins, Bryce
name: Siminos, Evangelos
Publisher: name: arXiv
Year: 2012
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Mathematical Physics (math-ph)
subject: Dynamical Systems (math.DS)
subject: Group Theory (math.GR)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 76F20

description: Symmetry reduction by the method of slices quotients the continuous symmetries of chaotic flows by replacing the original state space by a set of charts, each covering a neighborhood of a dynamically important class of solutions, qualitatively captured by a `template'. Together these charts provide an atlas of the symmetry-reduced `slice' of state space, charting the regions of the manifold explored by the trajectories of interest. Within the slice, relative equilibria reduce to equilibria and relative periodic orbits reduce to periodic orbits. Visualizations of these solutions and their unstable manifolds reveal their interrelations and the role they play in organizing turbulence/chaos.
description: 12 Pages, 12 figures
Neolignans and polyoxygenated seco-cyclohexenes from the stems and leaves of Piper suipigua Buch.-Ham. ex D. Don
Creators: name: Masranoi, Jariya
name: Kanokmedhakul, Kwanjai
name: Lakornwong, Waranya
name: Tontapha, Sarawut
name: Suwanphakdee, Chalermpol
name: Yahuafai, Jantana
name: Kanokmedhakul, Somdej
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biochemistry
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences

description: Five new compounds including, a neolignan, eupomatenoid-19 (1) and four polyoxygenated seco-cyclohexenes, artahongkongenes G-J (2–5), together with fifteen known compounds (6–20) were isolated from the stems and leaves of Piper suipigua Buch.-Ham. ex D. Don. Their structures were determined by spectroscopic evidence (IR, UV, 1H NMR, 13C NMR and 2 D NMR) as well as MS. The absolute configurations of polyoxygenated seco-cyclohexenes 2–8 were identified by NOESY data and by comparison of their experimental and calculated ECD spectral data. Neolignans, eupomatenoid-19 (1) and eupomatenoid-7 (10), displayed cytotoxicity against several cancer cell lines. In addition, eupomatenoid-7 (10) showed antibacterial activity against Bacillus cereus, Bacillus subtilis and Staphylococcus aureus.
Quantum suppression of irregularity in the spectral properties of the kicked rotator
Creators: name: Frahm, Holger
name: Mikeska, H.J.
Publisher: name: College Park (Maryland) : American Physical Society
Year: 1988
Subjects: subject: quantum kicked rotator
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: The statistical properties of the quasienergy spectrum are used to measure the influence of quantum effects on the quantum kicked rotator which displays chaotic behavior in the classical limit. A transition from orthogonal-ensemble statistics in the semiclassical limit (ℏ→0) to Poisson statistics in the quantum regime is observed. In view of previously obtained results for this system the dependence on the irrationality of ℏ is discussed.
QuTiP 2: A Python framework for the dynamics of open quantum systems
Creators: name: Johansson, J. R.
name: Nation, P. D.
name: Nori, Franco
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present version 2 of QuTiP, the Quantum Toolbox in Python. Compared to the preceding version [Comput. Phys. Comm. 183 (2012) 1760], we have introduced numerous new features, enhanced performance, made changes in the Application Programming Interface (API) for improved functionality and consistency within the package, as well as increased compatibility with existing conventions used in other scientific software packages for Python. The most significant new features include efficient solvers for arbitrary time-dependent Hamiltonians and collapse operators, support for the Floquet formalism, and new solvers for Bloch-Redfield and Floquet-Markov master equations. Here we introduce these new features, demonstrate their use, and give a summary of the important backward-incompatible API changes introduced in this version.
description: 9 pages, 5 figures
Majorana Fermions and Disclinations in Topological Crystalline Superconductors
Creators: name: Teo, Jeffrey C. Y.
name: Hughes, Taylor L.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We prove a topological criterion for the existence of zero-energy Majorana bound-state on a disclination, a rotation symmetry breaking point defect, in 4-fold symmetric topological crystalline superconductors (TCS). We first establish a complete topological classification of TCS using the Chern invariant and three integral rotation invariants. By analytically and numerically studying disclinations, we algebraically deduce a Z_2-index that identifies the parity of the number of Majorana zero-modes at a disclination. Surprisingly, we also find weakly-protected Majorana fermions bound at the corners of superconductors with trivial Chern and weak invariants.
description: 5 pages, 4 figures
Quantization conditions for the periodic Toda chain: Inadequacy of Bethe ansatz methods
Creators: name: Fowler, Michael
name: Frahm, Holger
Publisher: name: College Park (Maryland) : American Physical Society
Year: 1989
Subjects: subject: low-lying energy levels
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Gutzwiller has developed a scheme for determining the energy levels of a finite quantum Toda lattice. We present a numerical analysis using his method and calculate low-lying energy levels for some small lattices. We check the completeness of his quantization conditions in the harmonic (low-energy) and the semiclassical (high-energy) limits. Our main finding is that the Bethe-ansatz spectrum equations, known to be exact for an infinite Toda lattice in the classical limit, are incorrect for finite and quantum lattices.
Flux dynamics and growth of the superconducting phase
Creators: name: Frahm, Holger
name: Ullah, Salman
name: Dorsey, Alan T.
Publisher: name: College Park (Maryland) : American Physical Society
Year: 1991
Subjects: subject: type-I superconductors| type-II superconductors
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We present a detailed investigation of the growth of the superconducting phase in a magnetic field. For type-I superconductors, the planar normal-superconductor interface is dynamically unstable. In the nucleation regime this feature leads to interface motion similar to that found in the solid-liquid transition. In the spinodal regime the spinodal growth proceeds by a sequence of phase-slip processes, unique to a system with a complex order parameter. In type-II superconductors, vortex absorption stabilizes a planar interface, despite the negative surface tension.
Critical exponents for the one-dimensional Hubbard model
Creators: name: Frahm, Holger
name: Korepin, V.E.
Publisher: name: College Park (Maryland) : American Physical Society
Year: 1990
Subjects: subject: quantum field theory
subject: Bethe-Ansatz
subject: Hubbard model
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: Using results on the scaling of energies with the size of the system and the principles of conformal quantum field theory, we calculate the asymptotics of correlation functions for the one-dimensional Hubbard model in the repulsive regime in the presence of an external magnetic field. The critical exponents are given in terms of a dressed charge matrix that is defined in terms of a set of integral equations obtained from the Bethe-Ansatz solution for the Hubbard model. An interpretation of this matrix in terms of thermodynamical coefficients is given, and several limiting cases are considered.
Two new eudesmane sesquiterpene glucosides from the aerial parts of Artemisia vulgaris
Creators: name: Hanh, Tran Thi Hong
name: Vinh, Le Ba
name: Cuong, Nguyen Xuan
name: Quang, Tran Hong
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biophysics
subject: Biochemistry
subject: Space Science
subject: Genetics
subject: FOS: Biological sciences
subject: Pharmacology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer

description: Using combined chromatographic methods, two new sesquiterpene glucosides, vulgarosides A (1) and B (2), and two known analogs ainsliaside E (3) and pumilaside A (4) were isolated from the aerial parts of Artemisia vulgaris. Their chemical structures were established by spectroscopic methods, including one and two-dimensional nuclear magnetic resonance (1 D and 2 D-NMR) spectroscopy and high-resolution electrospray ionization mass spectrometry (HR-ESI-MS). In addition, their cytotoxicity on five human cancer cell lines, including KB (epidermoid carcinoma), HepG2 (hepatocarcinoma), MCF7 (breast carcinoma), SK-Mel-2 (melanoma), and LNCaP (prostate cancer) was also evaluated by the SRB assay. However, none of the tested eudesmane sesquiterpene glycosides showed significant cytotoxicity (IC50>100 µM).
Representation equivalence and p-Spectrum of constant curvature space forms
Creators: name: Lauret, Emilio A.
name: Miatello, Roberto J.
name: Rossetti, Juan Pablo
Publisher: name: arXiv
Year: 2012
Subjects: subject: Spectral Theory (math.SP)
subject: Differential Geometry (math.DG)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 58J53 (Primary), 22D10, 58J50 (Secondary)

description: We study the $p$-spectrum of a locally symmetric space of constant curvature $Γ\backslash X$, in connection with the right regular representation of the full isometry group $G$ of $X$ on $L^2(Γ\backslash G)_{τ_p}$, where $τ_p$ is the complexified $p$-exterior representation of $\mathrm{O}(n)$ on $\bigwedge^p(\mathbb{R}^n)_\mathbb{C}$. We give an expression of the multiplicity $d_λ(p,Γ)$ of the eigenvalues of the $p$-Hodge-Laplace operator in terms of multiplicities $n_Γ(π)$ of specific irreducible unitary representations of $G$. As a consequence, we extend results of Pesce for the spectrum on functions to the $p$-spectrum of the Hodge-Laplace operator on $p$-forms of $Γ\backslash X$, and we compare $p$-isospectrality with $τ_p$-equivalence for $0\leq p\leq n$. For spherical space forms, we show that $τ$-isospectrality implies $τ$-equivalence for a class of $τ$'s that includes the case $τ=τ_p$. Furthermore we prove that $p-1$ and $p+1$-isospectral implies $p$-isospectral. For nonpositive curvature space forms, we give examples showing that $p$-isospectrality is far from implying $τ_p$-equivalence, but a variant of Pesce's result remains true. Namely, for each fixed $p$, $q$-isospectrality for every $0\leq q\leq p$ implies $τ_q$-equivalence for every $0\leq q\leq p$. As a byproduct of the methods we obtain several results relating $p$-isospectrality with $τ_p$-equivalence.
description: 24 pages
Hot Disks And Delayed Bar Formation
Creators: name: Sheth, Kartik
name: Melbourne, Jason
name: Elmegreen, Debra Meloy
name: Elmegreen, Bruce G.
name: Athanassoula, E.
name: Abraham, Roberto G.
name: Weiner, Ben
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present observational evidence for the inhibition of bar formation in dispersion-dominated (dynamically hot) galaxies by studying the relationship between galactic structure and host galaxy kinematics in a sample of 257 galaxies between 0.1 $
description: In press, ApJ, 13 pages, 5 figures (3 color)
title: British human rights organisations and Soviet dissent, 1965-1985
Creators: name: Hurst, Mark
Publisher: name: University of Kent
Year: 2021

description: This thesis develops the literature on the role of human rights in the Cold War by highlighting the impact of British human rights organisations in the response to Soviet dissent. It argues that human rights groups played an essential role in compiling and distributing information on Soviet dissenters to all levels of British society. These groups all held empiricism at the centre of their campaigns, utilising an array of information to support their activism. This approach entailed the development of relationships between groups, which led to a network of activists, all working towards supporting Soviet dissenters. The first chapter of this thesis assesses Amnesty International's output on Soviet dissenters, focusing on the groups publications. Amnesty's translation of the samizdat journal The Chronicle of Current Events and its own publication Prisoners of Conscience in the USSR were influential on journalists and other human rights groups. The high level of research produced by Amnesty in this period was in deep contrast to its overstretched research department, who are considered in depth. The second chapter focuses on groups formed to respond to the Soviet political abuse of psychiatry as a way to suppress political dissidents. It explores how groups such as the Working Group on the Internment of Dissenters in Mental Hospitals and the Campaign Against Psychiatric Abuse campaigned on behalf of dissidents, and demonstrates the influence that they had on official groups such as the Royal College of Psychiatrists. The final chapter examines the response to religious persecution in the Soviet Union, focusing on the demonstrative campaigning of the Women's Campaign for Soviet Jewry (the 35's) and the more academic Keston College. This chapter demonstrates how despite the outward differences between these two organisations, they held much in common such as a reliance on an empirical method in their campaigns.
POETICS project: Fact Sheet
Creators: name: POETICS Consortium
Publisher: name: Zenodo
Year: 2020
Subjects: terabit transceivers
coherent transceivers
optical interconnects
Data Centers
hybrid integration
photonic packaging

description: POETICS is an H2020 Research and Innovation project funded by the European Union (GA no:871769), aiming to bring the optical interconnect technology with all performance, functionality and cost credentials and allow the Datacenter (DC) networks to scale and the 5G wired infrastructures to grow. Motivation: The rapid adoption of cloud computing in today’s economies has fueled an explosive traffic growth in Datacenters (DC), estimated at >25% CAGR, that will result in global annual DC traffic greater than 20 ZB by 2021. To support the emerging workloads and cope with the bandwidth demand, DC operators have followed a combination of two approaches: i) upgrading existing network switches and optical interfaces inside the DC to increase capacity (“scale up”) and ii) adding new network equipment and optical interfaces to the DC (“scale out”). Although, both approaches were successful in allowing the Cloud DC infrastructure to grow to hyperscale, it is certain that they will eventually become bound by power and real-estate constraints. Concept: POETICS comes as a Research and Innovation project aiming to develop novel Terabit optical engines and optical switching circuits and co-package them with digital switching chips to realize Multi-Chip Modules (MCM) for next generation switching equipment with Tb/s capacities and very high energy efficiency that fit into the roadmap of vendors. Enabling Terabit capacity optical interconnects requires a paradigm shift in the packaging approach. The electrical interconnect distance between the optical engine and the digital switching chip must be minimized and signal conditioning chips and unwanted components that are required and inevitably lead to increased power consumption and reduced signal integrity, should be removed. It also requires the right combination of photonic and electronic technology to be integrated in order to deliver high performance, low-cost and energy efficient optical engines. This approach has the potential to remove the optical interconnect bandwidth bottlenecks and allow DC networks and the 5G wired infrastructure to grow. ---------------------------------------- POETICS project has received funding from the European Union’s Horizon 2020 Research and Innovation Programme under G.A No 871769 and it is an initiative of the Photonics Public Private Partnership. -----------------------------------------
Numerical design of a new forging press drive incorporating non-circular gears
Creators: name: Doege, E.
name: Meinen, J.
name: Neumaier, T.
name: Schaprian, M.
Publisher: name: London : SAGE Publications Ltd.
Year: 2001
Subjects: subject: Drive mechanism
subject: Finite element simulation
subject: Metal forming
subject: Noncircular gears
subject: Thermal die loading
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: Manufacturing processes as well as products have to be improved continually to meet all the requirements of international competition. Along with economic demands, changing consumer and environmental legislation lead to increased pressure for new and advanced products and processes. Consequently, the forging industry continually tries to improve hot forging processes. Precision hot forging technology, used for the production of connecting rods, bevel gears, straight planet gears, helical gears, clutch gearing or constant velocity joints, has been improved constantly [1-3]. Precision forging is carried out with closed dies in order to guarantee the continuous quality of the workpiece and to avoid possible damage to the forged parts by clipping or piercing operations. Many variables influence the quality of the final product and the economics of the process, especially the workpiece temperature, the die temperature and the pressure dwell time. High workpiece temperatures lead to high temperatures on the surface of the dies. Therefore, the temperature load depends directly on the pressure dwell time. Excessive temperature loads inevitably lead to damage of the dies [4]. This article presents a numerical study of a new press concept using non-circular gears in the drive mechanism. The new press kinematics result in a reduced pressure dwell time in comparison with a conventional press kinematic. © IMechE 2001.
title: How is the abstract knowledge of craft and material properties shared with the user in simulation role-play video games?
Creators: name: Thompson, Shanique
Publisher: name: Goldsmiths, University of London
Year: 2020

description: This dissertation aims to bring together information and data on how craft and material properties are included in simulation role play games. The topic of research was inspired by the lack of academic research into craft and crafting within digital games. The research is analysed from multiple avenues, including the point of views of the players, the intentions of developers and the social cultural influences. In addition to the research into simulation role-play games the reflection of first hand testing and analysis of the crafting elements and mechanics of some simulation role-play games is also included in this paper. The games included are those which fit into the categories of simulation role-play games and include crafting mechanics in different forms within them. Harvest Moon, Stardew Valley, MineCraft and The Sims are just some of the included titles. Collection, material properties, crafting and the use of resources within games are comparatively explored alongside research into culture, economics, ethics and visual design principles.
Radiative Properties of Pair-instability Supernova Explosions
Creators: name: Dessart, Luc
name: Waldman, Roni
name: Livne, Eli
name: Hillier, D. John
name: Blondin, Stéphane
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present non-LTE time-dependent radiative-transfer simulations of pair-instability supernovae (PISNe) stemming from red-supergiant (RSG), blue-supergiant (BSG) and Wolf-Rayet (WR) star rotation-free progenitors born in the mass range 160-230Msun, at 10^-4 Zsun. Although subject to uncertainties in convection and stellar mass-loss rates, our initial conditions come from physically-consistent models that treat evolution from the main-sequence, the onset of the pair-production instability, and the explosion phase. With our set of input models characterized by large 56Ni and ejecta masses, and large kinetic energies, we recover qualitatively the Type II-Plateau, II-peculiar, and Ib/c light-curve morphologies, although they have larger peak bolometric luminosities (~10^9 to 10^10 Lsun) and a longer duration (~200d). We discuss the spectral properties for each model during the photospheric and nebular phases, including Balmer lines in II-P and II-pec at early times, the dominance of lines from intermediate-mass-elements (IMEs) near the bolometric maximum, and the strengthening of metal line blanketing thereafter. Having similar He-core properties, all models exhibit similar post-peak spectra that are strongly blanketed by FeII and FeI lines, characterized by red colors, and that arise from photospheres/ejecta with a temperature of <4000K. Combined with the modest line widths after bolometric peak, these properties contrast with those of known super-luminous SNe suggesting that PISNe are yet to be discovered. Being reddish, PISNe will be difficult to observe at high redshift except when they stem from RSG explosions, in which case they could be used as metallicity probes and distance indicators.
description: accepted to MNRAS
Design, synthesis, cytotoxic, and anti-inflammatory activities of some novel analogues of aloe-emodin isolated from the rhizomes of Rheum emodi
Creators: name: Kumar, G. Dileep
name: Siva, Bandi
name: Ashwini, K.
name: Kumar, J. Vinod
name: Ramalingam, V.
name: Balaji, A. Sai
name: Babu, K. Suresh
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer
subject: Hematology

description: In connection with our continuous efforts in the synthesis of derivatives from major compounds isolated from traditional medicinal plants, in the present study we have attempted to synthesize the furan-conjugated aloe-emodin derivatives (5a–j) using a three-component reaction. The synthesized derivatives were assessed for anticancer activity against five different cancer cell lines using the in vitro MTT assay and the results showed that most of the derivatives are potent against cancer cells comparing with the control. Compounds 5a and 5e showed excellent activity against all the cancer cells with less than 12.5 µM and arrested the cell cycle at the G0/G1 phase in both CAL27 and SCC9 cells. Compound 5e induces the early apoptosis in CAL27 cells and compounds 5a and 5e induce early and late apoptosis, respectively, in SCC9 cells. Moreover, compounds 5b, 5c, 5i, and 5j showed excellent anti-inflammatory activity in LPS-stimulated RAW 264.7 cells by inhibiting IL-6 production. The molecular docking studies revealed that compound 5e has strong interaction with the CLK kinase and protein kinase II through hydrogen binding Asp325 and Lys290.
JUSTIÇA E JUSTIÇAMENTO
Creators: name: Santana, José Cláudio Pavão
Publisher: name: Zenodo - Cadernos da Pena do Pavao
Year: 2023

description: Ano 09 – vol. 03 – n. 23/2021
Justiça e justiçamento são coisas bem distintas.
Se você acha que no caso de um julgador violar regras não é justiça, fazer o que a lei não diz também não o é.
Esclareço que não li os processos, mas conheço as regras de Direito adiante reproduzidas. Falo, portanto, sobre o Direito.
A New Limit on Possible Long-Range Parity-odd Interactions of the Neutron from Neutron Spin Rotation in Liquid $^{4}He$
Creators: name: Yan, H.
name: Snow, W. M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Various theories beyond the Standard Model predict new particles with masses in the sub-eV range with very weak couplings to ordinary matter. A parity-odd interaction between polarized nucleons and unpolarized matter proportional to $g_{V}g_{A}{\vec{s}} \cdot {\vec{p}}$ is one such possibility, where ${\vec{s}}$ and ${\vec{p}}$ are the spin and the momentum of the polarized nucleon, and $g_{V}$ and $g_{A}$ are the vector and axial vector couplings of an interaction induced by the exchange of a new light vector boson. We report a new experimental upper bound on such possible long-range parity-odd interactions of the neutron with nucleons and electrons from a recent search for parity violation in neutron spin rotation in liquid $^{4}He$. Our constraint on the product of vector and axial vector couplings of a possible new light vector boson is $g_{V}g_{A}^{n} \leq 10^{-32}$ for an interaction range of 1m. This upper bound is more than seven orders of magnitude more stringent than the existing laboratory constraints for interaction ranges below 1m, corresponding to a broad range of vector boson masses above $10^{-6}$ eV. More sensitive searches for a $g_{V}g_{A}^{n}$ coupling could be performed using neutron spin rotation measurements in heavy nuclei or through analysis of experiments conducted to search for nucleon-nucleon weak interactions and nuclear anapole moments.
Zum Problem der Wahrheit in der traditionell kritischen Theorie
Creators: name: Bensch, Hans-Georg
Publisher: name: Oldenburg : BIS Verlag
Year: 2008
Subjects: subject: truth
subject: philosophy
subject: philosophy of science
subject: traditional theory
subject: self-consciousness
subject: individual
subject: relativism
subject: Wahrheit
subject: Philosophie
subject: Kant
subject: Hegel
subject: Marx
subject: traditionelle Theorie
subject: Selbstbewusstsein
subject: Individuum
subject: Relativismus
subject: Dewey Decimal Classification::100 | Philosophie

description: Mit dem Wahrheitsbegriff ist ein entscheidendes Thema der Philosophie bzw. der sich bildenden Wissenschaftstheorie im 20 Jh. angesprochen. Wichtige Aufsätze von Max Horkheimer aus den 30iger Jahren kreisen um dieses Thema. Die Prämissen und die Konsequenzen der Thesen von Horkheimer werden in dem vorliegenden Text immer wieder mit Kant, Hegel und Marx konfrontiert. Im Ergebnis werden blinde Flecken in der späteren sogenannten Kritischen Theorie deutlich.
Forage yield, competition and economic benefit of intercropping cactus and millet with mulch in a semi-arid environment
Creators: name: de Sá Souza, Marcondes
name: do Nascimento Araújo Júnior, George
name: de Souza, Luciana Sandra Bastos
name: da Rosa Ferraz Jardim, Alexandre Maniçoba
name: da Silva, Gabriel Italo Novaes
name: de Araújo, Gherman Garcia Leal
name: Campos, Fleming Sena
name: de Mello Vieira Leite, Maurício Luiz
name: Tabosa, José Nildo
name: da Silva, Thieres George Freire
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Space Science
subject: Cell Biology
subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: Plant Biology

description: This study aimed to quantify forage yield, economic performance, biological efficiency and competitive ability in cactus intercropped with millet, compared with their monocrops, both with and without mulch, under irrigation. The experiment was conducted over two years in semi-arid of Brazil. The experimental design was of randomised blocks with four replications and six treatments: monocropped cactus without mulch; monocropped cactus with mulch; monocropped millet without mulch; monocropped millet with mulch and cactus intercropped with millet, with and without mulch. The individual yields of fresh (270 t ha−1) and dry (23 t ha−1) matter in the cactus were not affected by the mulch or by intercropping. Mulching improved the individual yields of fresh (69.7 t ha−1) and dry (23.4 t ha−1) matter in the monocropped millet. Total dry matter was greater in the intercropping systems, both with (32.8 t ha−1) and without (31.4 t ha−1) mulching, being the average monetary advantage index equal to 8 404 BRL ha−1. The cactus-millet configuration, irrespective of the use of mulch, but irrigated in dry environments or during dry periods of the year, is more advantageous than the monocrops, because it promotes gains in production and food diversity for meeting the demand of the herd.
Intercropping forage cactus with sorghum affects the morphophysiology and phenology of forage cactus
Creators: name: da Rosa Ferraz Jardim, Alexandre Maniçoba
name: de Souza, Luciana Sandra Bastos
name: Alves, Cleber Pereira
name: de Araújo, Jandis Ferreira Nunes
name: de Souza, Carlos André Alves
name: Pinheiro, Antonio Gebson
name: de Araújo, Gherman Garcia Leal
name: Campos, Fleming Sena
name: Tabosa, José Nildo
name: da Silva, Thieres George Freire
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Physiology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Science Policy

description: The aim of this study was to evaluate morphophysiological indices, phenology and cutting time of forage cactus (Opuntia and Nopalea spp.) clones intercropped with sorghum cultivars (Sorghum bicolor). The experiment was carried out from 2017 to 2018, in two cropping systems (monocropping and intercropping), comprising 12 treatments, consisted of three cactus clones: ‘IPA Sertânia’—IPA, ‘Miúda’—Miu and ‘Orelha de Elefante Mexicana’— OEM, in a monocropping system and nine combinations the cacti and sorghum (cultivars 467, SF11 and 2502) to comprise each of the intercropping systems. Cladodes morphophysiological indices were obtained: absolute growth rate, relative growth rate, net assimilation rate (NAR), specific cladode area rate (SCAR) and the cladode area index rate. OEM showed higher absolute growth rates at the beginning of the cycle, compared with IPA and Miu. NAR was higher in the monocropped OEM and in the OEM-2502 intercrop than under all the IPA and Miu systems (monocropping and intercropping), but the SCAR rate was higher for IPA (monocrop and intercropped). Miu showed a shorter duration of phenophase 2, but OEM had a higher rate of cladode emission during this phase. Cactus-sorghum intercropping systems cause a significant reduction in growth rates of the forage cactus. Intercropping has an earlier cutting time than the monocropping.
Effects of short-duration kraaling depend on initial conditions in a mesic grassland
Creators: name: Hawkins, Heidi-Jayne
name: Mgwali, Nompendulo
name: Vetter, Susanne
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biochemistry
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Plant Biology

description: Short-duration overnight kraaling has been suggested as a tool for restoring degraded rangelands. However, the response of different plant functional types and communities to such intense livestock impact may vary depending on local context. We thus examined the effects of short-duration overnight kraaling on soil and vegetation characteristics in a mesic montane grassland in South Africa using paired kraal and control sites, as part of a low intensity grazing approach. Kraaling increased soil P and S, as well as soil organic matter (except when initial values were over 12%). The effect of kraaling on vegetation was strongly dependent on initial condition. Basal cover of grasses and forbs increased by approximately 50 and 15%, respectively, if sites had very low initial basal cover, but decreased by up to 15% if initial values were over 50% and 10%, respectively. Kraaling always decreased herbaceous biomass, but especially when initial values were over 2 000 kg ha−1. In mesic grasslands, short-duration overnight kraaling is promising as a tool for rehabilitating degraded sites or fertilizing abandoned cropland, but should be avoided where the grass sward is intact. We recommend that the suitability of kraaling be evaluated per vegetation type and local context.
Kinetic models for the trading of goods
Creators: name: Toscani, G.
name: Brugna, C.
name: Demichelis, S.
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Finance (q-fin.GN)
subject: Mathematical Physics (math-ph)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Economics and business
subject: FOS: Physical sciences

description: In this paper we introduce kinetic equations for the evolution of the probability distribution of two goods among a huge population of agents. The leading idea is to describe the trading of these goods by means of some fundamental rules in price theory, in particular by using Cobb-Douglas utility functions for the binary exchange, and the Edgeworth box for the description of the common exchange area in which utility is increasing for both agents. This leads to a Boltzmann-type equation in which the post-interaction variables depend in a nonlinear way from the pre-interaction ones. Other models will be derived, by suitably linearizing this Boltzmann equation. In presence of uncertainty in the exchanges, it is shown that the solution to some of the linearized kinetic equations develop Pareto tails, where the Pareto index depends on the ratio between the gain and the variance of the uncertainty. In particular, the result holds true for the solution of a drift-diffusion equation of Fokker-Planck type, obtained from the linear Boltzmann equation as the limit of quasi-invariant trades.
First report on the synthesis and structural studies of trans-Phakellistatin 18: a rotamer of marine natural product phakellistatin 18
Creators: name: Kanwal, Iqra
name: Mushtaq, Farkhanda
name: Ali, Hunain
name: Tufail, Priya
name: Jahan, Humera
name: Shaheen, Farzana
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Cancer

description: Phakellistatin peptides from marine organisms are the sources of proline-rich cyclic peptides with reported significant antitumor activities. Phakellistatin 18 (1), reported from marine sponge Phakellia fusca, contains three proline-peptide linkages in cis form. We attempted the total synthesis of natural product 1 through solution-phase macrocyclization approach, as a result, the synthetic cyclic peptide 2 was obtained as a rotamer of natural product having all three proline residues in trans-conformation. Here, we describe the synthesis, structural, and cytotoxicity studies of trans-Phakellistatin 18 (2), and its analog [Ala1,3,6]-Phakellistatin 18 (3). Detailed NMR studies were carried out to characterize the synthesized peptides, and anti-cancer screening was performed by using MTT assay. The synthetic trans-Phakellistatin 18 (2) (IC50=67.5 ± 2.938 µM) showed comparable cytotoxicity against HepG2 cancer cell line with standard drug doxorubicin (IC50=63.88 ± 6.48 µM). Here, the first synthetic and structural studies on trans-Phakellistatin 18 (2), and its anticancer screening against HepG2 cell line was reported.
The minijets-in-a-jet statistical model and the RMS-flux correlation
Creators: name: Biteau, J.
name: Giebels, B.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The flux variability of blazars at very high energies does not have a clear origin. Flux variations on time scales down to the minute suggest that variability originates in the jet, where a relativistic boost can shorten the observed time scale, while the linear relation between the flux and its RMS or the skewness of the flux distribution suggests that the variability stems from multiplicative processes, which are associated in some models with the accretion disk. We study the RMS-flux relation and emphasize its link to Pareto distributions, characterized by a power-law probability density function. Such distributions are naturally generated within a minijets- in-a-jet statistical model, in which boosted emitting regions are isotropically oriented within the bulk relativistic flow of a jet. We prove that, within this model, the flux of a single minijet is proportional to its RMS. This relation still holds when considering a large number of emitting regions, for which the distribution of the total flux is skewed and could be interpreted as being log-normal. The minijets-in-a-jet statistical model reconciles the fast variations and the statistical properties of the flux of blazars at very high energies.
description: 6 pages, 6 figures, accepted in AA
Comment on “Model of Fermions with Correlated Hopping (Integrable Cases)”
Creators: name: Bedürftig, Gerald
name: Frahm, Holger
Publisher: name: College Park (Maryland) : American Physical Society
Year: 1995
Subjects: subject: Model of Fermions
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: A Comment of the Letter by Igor N. Karnaukhov Phys. Rev. Lett. 73, 1130 (94). The authors of the Letter offer a Reply.
The Driver of Coronal Mass Ejections in the Low Corona: A Flux Rope
Creators: name: Cheng, X.
name: Zhang, J.
name: Ding, D. M.
name: Liu, Y.
name: Poomvises, W.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Plasma Physics (physics.plasm-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: Recent Solar Dynamic Observatory observations reveal that coronal mass ejections (CMEs) consist of a multi-temperature structure: a hot flux rope and a cool leading front (LF). The flux rope first appears as a twisted hot channel in the Atmospheric Imaging Assembly 94 A and 131 A passbands. The twisted hot channel initially lies along the polarity inversion line and then rises and develops into the semi-circular flux rope-like structure during the impulsive acceleration phase of CMEs. In the meantime, the rising hot channel compresses the surrounding magnetic field and plasma, which successively stack into the CME LF. In this paper, we study in detail two well-observed CMEs occurred on 2011 March 7 and 2011 March 8, respectively. Each of them is associated with an M-class flare. Through a kinematic analysis we find that: (1) the hot channel rises earlier than the first appearance of the CME LF and the onset of the associated flare; (2) the speed of the hot channel is always faster than that of the LF, at least in the field of view of AIA. Thus, the hot channel acts as a continuous driver of the CME formation and eruption in the early acceleration phase. Subsequently, the two CMEs in white-light images can be well reproduced by the graduated cylindrical shell flux rope model. These results suggest that the pre-existing flux rope plays a key role in CME initiation and formation.
description: 18 pages, 12 figures, 1 table, accepted for publication in ApJ
Assessing scalability in the QUALIDEC study: why, how and who?
Creators: name: Zamboni, Karen
name: Hanson, Claudia
name: Sidney Annerstedt, Kristi
name: Schellenberg, J
name: Betran, Ana Pilar
name: Dumont, Alexandre
name: QUALIDEC Research Group
Publisher: name: Zenodo
Year: 2021
Subjects: Unnecessary cesarean section, scalabilty assessment

description: Presentation at the 6th Global Symposium on Health Systems Research in (virtual) Dubai from 8-12 November 2020.
Correlation functions of the one-dimensional Hubbard model in a magnetic field
Creators: name: Frahm, Holger
name: Korepin, V.E.
Publisher: name: College Park (Maryland) : American Physical Society
Year: 1991
Subjects: subject: Hubbard model
subject: Bethe-Ansatz
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: We present a general method for the calculation of correlation functions in the repulsive one-dimensional Hubbard model at less than half-filling in a magnetic field h. We describe the dependence of the critical exponents that drive their long-distance asymptotics on the Coulomb coupling, the density, and h. This dependence can be described in terms of a set of coupled Bethe-Ansatz integral equations. It simplifies significantly in the strong-coupling limit, where we give explicit formulas for the dependence of the critical exponents on the magnetic field. In particular, we find that at small field the functional dependence of the critical exponents on h can be algebraic or logarithmic—depending on the operators involved. In addition, we evaluate the singularities of the Fourier images of the correlation functions. It turns out that switching on a magnetic field gives rise to singularities in the dynamic field-field correlation functions that are absent at h=0.
Bromatological and histological features of native African grasses under grazing in Brazilian semi-arid rangelands
Creators: name: de Lira Menor, Talita Roberta Firemand
name: dos Santos, Mércia Virginia Ferreira
name: Coêlho, Janerson José
name: Gonçalves, Geane Dias
name: de Mello, Alexandre Carneiro Leão
name: da Cunha, Márcio Vieira
name: dos Santos, Amanda Maria Gallindo
name: Ferraz, Ivan
name: Júnior, José Carlos Batista Dubeux
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Space Science
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Science Policy
subject: Plant Biology

description: This study evaluated the bromatological and histological features of native African grasses under grazing in Brazilian semi-arid rangelands. An experimental grid design was used in a randomised sampling method for four replicate samples of three African grasses. The grasses evaluated were: Cenchrus ciliaris L., Digitaria pentzii Stent. and Megathyrsus maximus (Jacq.). The bromatological and histological traits analysed included dry matter (DM), crude protein (CP), neutral detergent fibre corrected to ashes and protein (NDFap), lignin, mesophyll, vascular bundle, phloem, xylem, vascular sheath, sclerenchyma, bulliform cells, and the adaxial and abaxial epidermis. The type of grass and grazing cycle correlated with DM, NDF and lignin (p < 0.05), whereas CP was not affected by these factors (p > 0.05). Dry matter ranged between 128 and 304 g kg−1; CP ranged between 90 and 167 g kg−1; NDFap between 542 and 707 g kg−1, and lignin between 10 and 40 g kg−1. The proportion of xylem (8.4%), vascular sheath (30.5%) and total vascular bundles (38.1%) were greater in M. maximus (p < 0.05). The percentage of sclerenchyma did not differ between species (p > 0.05). Digitaria pentzii and C. ciliaris had a greater proportion of mesophyll than M. maximus (p < 0.05). Of the three grasses analysed. Digitaria pentzii exhibited the highest forage quality, because it had the lowest concentration of fibre and lignin, with lower proportions of lignified tissues.
Integrable impurity in the supersymmetric t-J model
Creators: name: Bedürftig, Gerald
name: Eßler, Fabian H.L.
name: Frahm, Holger
Publisher: name: College Park (Maryland) : American Physical Society
Year: 1996
Subjects: subject: t-J chain
subject: transport properties
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: An impurity coupling to both spin and charge degrees of freedom is added to a periodic t- J chain such that its interaction with the bulk can be varied continuously without losing integrability. Ground state properties, impurity contributions to the susceptibilities and low temperature specific heat are studied as well as transport properties. The impurity phase shifts are calculated to establish the existence of an impurity bound state in the holon sector.
The ATLAS 5.5 GHz survey of the Extended Chandra Deep Field South: Catalogue, Source Counts and Spectral Indices
Creators: name: Huynh, M. T.
name: Hopkins, A. M.
name: Lenc, E.
name: Mao, M. Y.
name: Middelberg, E.
name: Norris, R. P.
name: Randall, K. E.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Star forming galaxies are thought to dominate the sub-mJy radio population, but recent work has shown that low luminosity AGN can still make a significant contribution to the faint radio source population. Spectral indices are an important tool for understanding the emission mechanism of the faint radio sources. We have observed the extended Chandra Deep Field South at 5.5 GHz using a mosaic of 42 pointings with the Australia Telescope Compact Array (ATCA). Our image reaches an almost uniform sensitivity of ~12 microJy rms over 0.25 deg^2 with a restoring beam of 4.9 x 2.0 arcsec, making it one of the deepest 6cm surveys to date. We present the 5.5 GHz catalogue and source counts from this field. We take advantage of the large amounts of ancillary data in this field to study the 1.4 to 5.5 GHz spectral indices of the sub-mJy population. For the full 5.5 GHz selected sample we find a flat median spectral index, alpha_med = -0.40, which is consistent with previous results. However, the spectral index appears to steepen at the faintest flux density levels (S_{5.5 GHz} < 0.1 mJy), where alpha_med = -0.68. We performed stacking analysis of the faint 1.4 GHz selected sample (40 < S_{1.4 GHz} < 200 microJy) and also find a steep average spectral index, alpha = -0.8, consistent with synchrotron emission. We find a weak trend of steepening spectral index with redshift. Several young AGN candidates are identified using spectral indices, suggesting Gigahertz Peaked Spectrum (GPS) sources are as common in the mJy population as they are at Jy levels.
description: 18 pages, 16 figures, accepted for publication in MNRAS