cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Growth and migration of solids in evolving protostellar disks I: Methods and Analytical tests
Creators: name: Garaud, P.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: This series of papers investigates the early stages of planet formation by modeling the evolution of the gas and solid content of protostellar disks from the early T Tauri phase until complete dispersal of the gas. In this first paper, I present a new set of simplified equations modeling the growth and migration of various species of grains in a gaseous protostellar disk evolving as a result of the combined effects of viscous accretion and photo-evaporation from the central star. Using the assumption that the grain size distribution function always maintains a power-law structure approximating the average outcome of the exact coagulation/shattering equation, the model focuses on the calculation of the growth rate of the largest grains only. The coupled evolution equations for the maximum grain size, the surface density of the gas and the surface density of solids are then presented and solved self-consistently using a standard 1+1 dimensional formalism. I show that the global evolution of solids is controlled by a leaky reservoir of small grains at large radii, and propose an empirically derived evolution equation for the total mass of solids, which can be used to estimate the total heavy element retention efficiency in the planet formation paradigm. Consistency with observation of the total mass of solids in the Minimum Solar Nebula augmented with the mass of the Oort cloud sets strong upper limit on the initial grain size distribution, as well as on the turbulent parameter $\alphat$. Detailed comparisons with SED observations are presented in a following paper.
description: Submitted to ApJ. 23 pages and 13 figures
TANTO CON TAN POCO.  LOS ESTUDIOS LITERARIOS EN ARGENTINA (1958‒2015)
Creators: name: Gerbaudo, Analía Isabel
Publisher: name: Zenodo
Year: 2023

description: Este texto inaugura una nueva sección especial de Chuy, cuyo objetivo es publicar trabajos en curso, adelantos de libros o de investigaciones de largo aliento todavía no publicadas, intentando remediar la lentitud del proceso editorial. Compartimos, entonces, la introducción del próximo libro de Gerbaudo, a publicarse por Ediciones UNL en 2024.
Luttinger sum rules and spin fractionalization in the SU(N) Kondo Lattice
Creators: name: Hazra, Tamaghna
name: Coleman, Piers
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We show how Oshikawa's theorem for the Fermi surface volume of the Kondo lattice can be extended to the SU$(N)$ symmetric case. By extending the theorem, we are able to show that the mechanism of Fermi surface expansion seen in the large $N$ mean-field theory is directly linked to the expansion of the Fermi surface in a spin-$1/2$ Kondo lattice. This linkage enables us to interpret the expansion of the Fermi surface in a Kondo lattice as a fractionalization of the local moments into heavy electrons. Our method allows extension to a pure U(1) spin liquid, where we find the volume of the spinon Fermi surface by applying a spin-twist, analogous to Oshikawa's flux insertion. Lastly, we discuss the possibility of interpreting the FL$^*$ phase characterised by a small Fermi surface in the absence of symmetry breaking, as a non-topological coexistence of such a U(1) spin liquid and an electronic Fermi liquid.
Metabolic Modelling of Microbiome
Creators: name: Ravikrishnan, Aarthi
Publisher: name: Zenodo
Year: 2021
Subjects: modelling
microbiome
bioinformatics
ISCB
Microbial communities
Graph-based modelling
Constraint-based modelling
algorithms
MATLAB

description: An introduction of the Metabolic Modelling of Microbiome by Aarthi Ravikrishnan
description: This is part of a tutorial given in the ISCB academy
Diffusion of a ring polymer in good solution via the Brownian dynamics
Creators: name: Kanaeda, Naoko
name: Deguchi, Tetsuo
Publisher: name: arXiv
Year: 2007
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Diffusion constants D_{R} and D_{L} of ring and linear polymers of the same molecular weight in a good solvent, respectively, have been evaluated through the Brownian dynamics with hydrodynamic interaction. The ratio $C=D_{R}/D_{L}$, which should be universal in the context of the renormalization group, has been estimated as $C= 1.11 \pm 0.01$ for the large-N limit. It should be consistent with that of synthetic polymers, while it is smaller than that of DNAs such as $C \approx 1.3$. Furthermore, the probability of the ring polymer being a nontrivial knot is found to be very small, while bond crossings may occur at almost all time steps in the present simulation that realizes the good solvent conditions.
description: 11 pages, 4 figures
Reproduction's Impact on Beef Cattle Herd Profitability
Creators: name: Griffith, Andrew P.
name: Rhinehart, Justin D.
name: Griffith, Andrew P.
name: Rhinehart, Justin D.
Publisher: name: Unknown
Year: 2021
Subjects: subject: Farm Management
subject: Livestock Production/Industries
subject: Production Economics
subject: beef cattle
subject: reproduction
subject: benchmarking
subject: profitability

description: Several factors influence beef cattle operation profitability. The three primary categories are input costs, cattle prices and reproduction (i.e., “making something to sell”). Of those three, cattle producers generally have more influence over reproduction than input costs and cattle prices, because reproductive rate can be controlled through management. Even if a cattle producer can purchase inputs at volume discounts and is extremely good at managing cattle price risk, it is still necessary to have something to sell, which comes back to reproduction. There are benchmarks for reproductive performance that influence profitability and economic sustainability. Pregnancy rate, calving rate and weaning rate are the first three reproduction benchmarks to focus on, with each rate setting the upper level of the next (i.e., if the pregnancy rate is 95 percent, then the calving rate cannot exceed 95 percent). These three values are indicative of the number of calves a producer can market given the number of cows exposed to a bull. Another important reproductive benchmark is the calving distribution of a herd (percent of calves born by day 30, 60 and 90 of a calving season), which influences the production benchmarks of weaning weight and pounds of calf weaned per cow exposed. The older a calf is, the heavier the calf will likely be at time of weaning and at time of sale. Shifting calving distribution improves revenue potential after reaching the upper limits of the other reproductive factors, but it is also influential prior to achieving those benchmarks. The objective of this publication is to compare how the net return to a beef cow-calf operation is impacted by changes in reproductive success. This publication illustrates how changes in reproductive benchmarks (i.e., weaning percentage and calving distribution) can influence profitability of a cow herd.
Proton irradiation effects on metal-YBCO interfaces
Creators: name: Acha, C.
name: Sanca, G. A.
name: Barella, M.
name: Alurralde, M.
name: Marlasca, F. Gomez
name: Huhtinen, H.
name: Paturi, P.
name: Golmar, F.
name: Levy, P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: 10 MeV proton-irradiation effects on a YBCO-based test structure were analyzed by measuring its current-voltage (IV) characteristics for different cumulated fluences. For fluences of up to $\sim$80$\cdot$10$^9$~p/cm$^2$ no changes in the electrical behavior of the device were observed, while for a fluence of $\sim$~300$\cdot$10$^9~$ p/cm$^2$ it becomes less conducting. A detailed analysis of the room temperature IV characteristics based on the $γ$ power exponent parameter [$γ=dLn(I)/dLn(V)$] allowed us to reveal the main conduction mechanisms as well as to establish the equivalent circuit model of the device. The changes produced in the electrical behavior, in accordance with Monte Carlo TRIM simulations, suggest that the main effect induced by protons is the displacement of oxygen atoms within the YBCO lattice, particularly from oxygen-rich to oxygen-poor areas, where they become trapped.
description: 22 pages, 7 figures, corresponding author: acha@df.uba.ar
A covariant approach for perturbations of rotationally symmetric spacetimes
Creators: name: Clarkson, Chris
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We present a covariant decomposition of Einstein's Field Equations which is particularly suitable for perturbations of spherically symmetric -- and general locally rotationally symmetric -- spacetimes. Based upon the utility of the 1+3 covariant approach to perturbation theory in cosmology, the semi-tetrad, 1+1+2 approach presented here should be useful for analysing perturbations of a variety of systems in a covariant and gauge-invariant manner. Such applications range from stellar objects to cosmological models such as the spherically symmetric Lemaitre-Tolman-Bondi solutions or the class of locally rotationally symmetric Bianchi models.
description: 13 pages
Łupek miedzionośny Legnicko-Głogowskiego Okręgu Miedziowego
Creators: name: Konopacka, Żaklina
name: Zagożdżon, Katarzyna D.
Publisher: name: Faculty of Geoengineering, Mining and Geology, Wrocław University of Technology, Wrocław
Year: 2014
Subjects: Łupek, charakterystyka

description: Łupek miedzionośny, Drzymała J., Kowalczuk P.B. (red.), WGGG PWr, Wrocław, ISBN 978-83-937788-6-7
1 Low power continuous-wave nonlinear optics in silica glass integrated waveguide structures
Creators: name: Ferrera, M.
name: Razzari, L.
name: Duchesne, D.
name: Morandotti, R.
name: Yang, Z.
name: Liscidini, M.
name: Sipe, J. E.
name: Chu, S.
name: Little, B. E.
name: Moss, D. J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Photonic integrated circuits (PICs) are a key component [1] for future telecommunication networks, where demands for greater bandwidth, network flexibility, low energy consumption and cost must all be met. The quest for all optical components has naturally targeted materials with extremely large nonlinearity, including chalcogenide glasses (ChG) [2] and semiconductors, such as silicon [3] and AlGaAs [4]. Yet issues such as immature fabrication technologies for ChG, and high linear and nonlinear losses for semiconductors, motivate the search for other materials. Here we present the first demonstration of nonlinear optics in integrated silica based glass waveguides using continuous wave (CW) light. We demonstrate four wave mixing (FWM), with low (7mW) CW pump power at a wavelength of 1550nm, in high index doped silica glass ring resonators capable of performing in photonic telecommunications networks as linear filters [5]. The high reliability, design flexibility, and manufacturability of our device raises the possibility of a new platform for future low cost nonlinear all optical PICs.
description: 15 pages, 5 figures, 32 references
Metabolic Modelling of Microbiom Interaction in Microbiome: Introduction to Metabolic Modelling
Creators: name: Raman, Karthik
Publisher: name: Zenodo
Year: 2021
Subjects: modelling
microbiome
bioinformatics
ISCB
MATLAB
Graph-based modelling
Constraint-based modelling
tutorial

description: A talk describing the Metabolic Modelling of Microbiom Interaction in Microbiome by Karthik Raman
description: This was part of a tutorial organised by the ISCB Academy
Responses by psychopaths to emotional words
Creators: name: Williamson, Sherrie
Publisher: name: University of British Columbia
Year: 2010

description: Reaction time, P300 latency, and P300 amplitude were used as measures to assess psychopathic responses to emotional words. Negative, positive, and neutral words were presented to psychopaths and nonpsychopaths in a lexical decision task. Relative to nonemotional words nonpsychopaths responded with faster reaction times to emotional words. This differential responding was not found in psychopaths. Additionally, emotional words increased P300 latency for nonpsychopaths and decreased it for psychopaths when the two groups were compared. It is suggested that these results lend some credence to Cleckley's (1982) belief that psychopaths suffer from semantic dementia.
title: The Extended Vienna System-Level Simulator for Reconfigurable Intelligent Surfaces
Creators: name: Hao, Le
name: Schwarz, Stefan
name: Rupp, Markus
Publisher: name: TU Wien
Year: 2023
Subjects: 6G
Intelli-gent Reflecting Surface (IRS)
Reconfigurable Intelligent Surface (RIS)
System level simulation

description: Reconfigurable intelligent surfaces (RISs) have been considered a promising research direction for the next generation of wireless communications. It is essential to perform extensive simulations in a system-level simulator (SLS) to analyze the system performance of RIS-assisted large-scale wireless networks. This paper introduces the RIS-tailored Vienna SLS that utilizes the MATLAB ray tracer to realize RIS-assisted transmissions. A recently published free space pathloss model for RIS (RISFSPL) has been adopted to be compatible with our SLS. In addition, we modified the ray tracing (RT) model based on the RISFSPL model to obtain a more precise pathloss in a realistic environment. In this way, we realize the advantages of both the RISFSPL and RT models. We verified the system performance through simulations in a single-input single-output (SISO) scenario with random and optimized RIS phase shifts. Furthermore, we analyzed the system performance through simulations in a complex scenario that consists of multiple base stations (BSs), RISs, and users.
Higher-Spin Gauge Fields Interacting with Scalars: The Lagrangian Cubic Vertex
Creators: name: Fotopoulos, A.
name: Irges, N.
name: Petkou, A. C.
name: Tsulaia, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We apply a recently presented BRST procedure to construct the Largangian cubic vertex of higher-spin gauge field triplets interacting with massive free scalars. In flat space, the spin-s triplet propagates the series of irreducible spin-s, s-2,..,0/1 modes which couple independently to corresponding conserved currents constructed from the scalars. The simple covariantization of the flat space result is not enough in AdS, as new interaction vertices appear. We present in detail the cases of spin-2 and spin-3 triplets coupled to scalars. Restricting to a single irreducible spin-s mode we uncover previously obtained results. We also present an alternative derivation of the lower spin results based on the idea that higher-spin gauge fields arise from the gauging of higher derivative symmetries of free matter Lagrangians. Our results can be readily applied to holographic studies of higher-spin gauge theories.
description: 26 pages, v2: references added
LAS HUMANIDADES DIGITALES Y  LOS ESTUDIOS LITERARIOS
Creators: name: Eve, Martin Paul
Publisher: name: Zenodo
Year: 2023
Subjects: Humanidades digitales
Estudios literarios
Digital humanities
Literary studies

description: Bajo la autorización del autor, publicamos la “Introducción” y las “Conclusiones” de The Digital Humanities and Literary Studies, Oxford University Press, 2022. Traducción y Edición realizada por Leo Cherri y Julieta Vanney. La version original puede encontrarse en https://academic.oup.com/book/38925.
Non-unitarity of Minkowskian non-local quantum field theories
Creators: name: Briscese, Fabio
name: Modesto, Leonardo
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We show that Minkowskian non-local quantum field theories are not unitary. We consider a simple one loop diagram for a scalar non-local field and show that the imaginary part of the corresponding complex amplitude is not given by Cutkosky rules, indeed this diagram violates the unitarity condition. We compare this result with the case of an Euclidean non-local scalar field, that has been shown to satisfy the Cutkosky rules, and we clearly identify the reason of the breaking of unitarity of the Minkowskian theory.
A High-Fidelity Flow Solver for Unstructured Meshes on Field-Programmable Gate Arrays
Creators: name: Karp, Martin
name: Podobas, Artur
name: Kenter, Tobias
name: Jansson, Niclas
name: Plessl, Christian
name: Schlatter, Philipp
name: Markidis, Stefano
Publisher: name: arXiv
Year: 2021
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences
subject: G.4; J.2; C.1

description: The impending termination of Moore's law motivates the search for new forms of computing to continue the performance scaling we have grown accustomed to. Among the many emerging Post-Moore computing candidates, perhaps none is as salient as the Field-Programmable Gate Array (FPGA), which offers the means of specializing and customizing the hardware to the computation at hand. In this work, we design a custom FPGA-based accelerator for a computational fluid dynamics (CFD) code. Unlike prior work -- which often focuses on accelerating small kernels -- we target the entire Poisson solver on unstructured meshes based on the high-fidelity spectral element method (SEM) used in modern state-of-the-art CFD systems. We model our accelerator using an analytical performance model based on the I/O cost of the algorithm. We empirically evaluate our accelerator on a state-of-the-art Intel Stratix 10 FPGA in terms of performance and power consumption and contrast it against existing solutions on general-purpose processors (CPUs). Finally, we propose a data movement-reducing technique where we compute geometric factors on the fly, which yields significant (700+ Gflop/s) single-precision performance and an upwards of 2x reduction in runtime for the local evaluation of the Laplace operator. We end the paper by discussing the challenges and opportunities of using reconfigurable architecture in the future, particularly in the light of emerging (not yet available) technologies.
description: 12 pages, 3 figures, 3 tables, Accepted to HPC Asia 2022
Type I background fields in terms of type IIB ones
Creators: name: Nikolic, B.
name: Sazdovic, B.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We choose such boundary conditions for open IIB superstring theory which preserve N=1 SUSY. The explicite solution of the boundary conditions yields effective theory which is symmetric under world-sheet parity transformation $Ω:σ\to-σ$. We recognize effective theory as closed type I superstring theory. Its background fields,beside known $Ω$ even fields of the initial IIB theory, contain improvements quadratic in $Ω$ odd ones.
description: 4 revtex pages, no figures
Impressions of Meiji Japan by five Victorian women
Creators: name: Tiers, Jane Elizabeth
Publisher: name: University of British Columbia
Year: 2010

description: This thesis examines five travelogues written by Victorian ladies who visited Japan between 1889 and 1906. These works are useful as historical documents because they give a first-hand account of life in Meiji Japan that is different from other sources. The authors portrayed the everyday lifestyle and customs of the Japanese people, including many things considered so commonplace most writers did not consider them worth recording. By comparing the authors' observations with modern sociological and historical studies, these travelogues have been shown to be remarkably accurate. The women's observations have been organized into the following catagories: etiquette, aesthetics, religion, family life and the women's ideas on Japan's modernization.
Evolution of the Fermi surface in phase fluctuating d-wave superconductors
Creators: name: Berg, Erez
name: Altman, Ehud
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: One of the most puzzling aspects of the high $T_c$ superconductors is the appearance of Fermi arcs in the normal state of the underdoped cuprate materials. These are loci of low energy excitations covering part of the fermi surface, that suddenly appear above $T_c$ instead of the nodal quasiparticles. Based on a semiclassical theory, we argue that partial Fermi surfaces arise naturally in a d-wave superconductor that is destroyed by thermal phase fluctuations. Specifically, we show that the electron spectral function develops a square root singularity at low frequencies for wave-vectors positioned on the bare Fermi surface. We predict a temperature dependence of the arc length that can partially account for results of recent angle resolved photo emission (ARPES) experiments.
description: Journal ref. added
Democratic Erosion and Political Party Elites
Creators: name: Konstant, Andrew
Publisher: name: University of Chicago
Year: 2021

description: The recession of democracies is on the rise. The result has been an increased focus by political scientists on when one can expect there to be resistance to a democracy’s degradation. What remains unexplored is why, in some cases, incumbent political parties have deposed would-be autocrats within their ranks after they have been elected to high office. While such actions are not commonplace, ruling parties in South Africa, Sri Lanka, Bolivia and Ecuador have removed, or contributed to the removal of, incumbent leaders who took steps to erode their democracies. As yet, no theory has been developed to explain these cases. All contemporary models assume that the citizen’s preferences and actions determine the direct constraints on an incumbent’s ability to undermine democracy. I instead place the focus on the would-be autocrat’s own party in order to determine the conditions under which party elites would halt their incumbent’s anti-democratic actions. To fill this gap, I propose a two models which together provide some insight into the strategic behavior of an incumbent would-be autocrat and the party elite as actors. They illustrate the conditions under which political parties either depose or abandon incumbent leaders who undermine democracy. In the first model, I make clear that in order to a would-be autocrat to maintain the support of the ruling party elite when eroding democracy, the would-be autocrat must compensate the party elite. In the second model, I establish that the party elite will remove the incumbent president responsible to for undermining democracy if the median citizen expresses disapproval of anti-democratic actions of the president. These insights shed light on how an effective, yet infrequently used, gatekeeping method within political parties operates.
Online Behavioral Analysis with Application to Emotion State Identification
Creators: name: Gao, Lei
name: Qi, Lin
name: Guan, Ling
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: In this paper, we propose a novel discriminative model for online behavioral analysis with application to emotion state identification. The proposed model is able to extract more discriminative characteristics from behavioral data effectively and find the direction of optimal projection efficiently to satisfy requirements of online data analysis, leading to better utilization of the behavioral information to produce more accurate recognition results.
Structure and Depletion at Fluoro- and Hydro-carbon/Water Liquid/Liquid Interfaces
Creators: name: Kashimoto, Kaoru
name: Yoon, Jaesung
name: Hou, Binyang
name: Chen, Chiu-hao
name: Lin, Binhua
name: Aratono, Makoto
name: Takiue, Takanori
name: Schlossman, Mark L.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The results of x-ray reflectivity studies of two oil/water (liquid/liquid) interfaces are inconsistent with recent predictions of the presence of a vapor-like depletion region at hydrophobic/aqueous interfaces. One of the oils, perfluorohexane, is a fluorocarbon whose super-hydrophobic interface with water provides a stringent test for the presence of a depletion layer. The other oil, heptane, is a hydrocarbon and, therefore, is more relevant to the study of biomolecular hydrophobicity. These results are consistent with the sub-angstrom proximity of water to soft hydrophobic materials.
description: 28 pages, 9 figures, main text plus supplementary, to be published in Physical Review Letters
Posfilología
Creators: name: Warren, Michelle
Publisher: name: Zenodo
Year: 2023
Subjects: Filología
Philology
Posfilología
Post-philology

description: Bajo la autorización de la autora, publicamos “Post-Philology”. Traducción: Ignacio Repetto. Revisión: Leo Cherri. Fuente: Postcolonial Moves: Medieval Through Modern. Patricia Clare y Michelle R. Warren (editoras), Nueva York, Pallgrave Mcmillan, 2003.
Model-Based Deep Autoencoder Networks for Nonlinear Hyperspectral Unmixing
Creators: name: Li, Haoqing
name: Borsoi, Ricardo Augusto
name: Imbiriba, Tales
name: Closas, Pau
name: Bermudez, José Carlos Moreira
name: Erdoğmuş, Deniz
Publisher: name: arXiv
Year: 2021
Subjects: subject: Signal Processing (eess.SP)
subject: Machine Learning (cs.LG)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Autoencoder (AEC) networks have recently emerged as a promising approach to perform unsupervised hyperspectral unmixing (HU) by associating the latent representations with the abundances, the decoder with the mixing model and the encoder with its inverse. AECs are especially appealing for nonlinear HU since they lead to unsupervised and model-free algorithms. However, existing approaches fail to explore the fact that the encoder should invert the mixing process, which might reduce their robustness. In this paper, we propose a model-based AEC for nonlinear HU by considering the mixing model a nonlinear fluctuation over a linear mixture. Differently from previous works, we show that this restriction naturally imposes a particular structure to both the encoder and to the decoder networks. This introduces prior information in the AEC without reducing the flexibility of the mixing model. Simulations with synthetic and real data indicate that the proposed strategy improves nonlinear HU.
Kühlere Stallluft – geringere Ammoniakemissionen
Creators: name: Epinatjeff, Peter
name: Beck, Jürgen
name: Jungbluth, Thomas
name: Scheuble, Andreas
Publisher: name: LANDTECHNIK
Year: 1997

description: Im Rahmen eines BML-Vorhabens sollten die synergetischen Wirkungen von nährstoffangepasster Fütterung und Zuluftkonditionierung durch einen Erdreichwärmetauscher in einem Mastschweinestall untersucht werden. Im Rahmen dieses Beitrags werden die Untersuchungen zur Minderung von Umweltbelastungen und von Ammoniakemissionen sowie zur umweltfreundlichen Energienutzung in der Schweinemast unter praktischen Bedingungen an einem Schweinestall mit 480 Mastplätzen aufgezeigt.
description: LANDTECHNIK, Bd. 52 Nr. 6 (1997)
Einsatz automatischer Melksysteme in der Milchviehhaltung
Creators: name: Schön, Hans
name: Wendl, Georg
name: Liebler, Joachim
Publisher: name: LANDTECHNIK
Year: 1997

description: Etwa 100 automatische Melksysteme werden derzeit in der Praxis eingesetzt. Sie werden als Mehrboxen oder Einzelboxen-Kompaktanlagen gebaut. ln diesem Beitrag werden erste Ergebnisse mit einer Einboxen-Kompaktanlage vorgestellt und daraus vorläufige Folgerungen für den praktischen Einsatz abgeliefert.
description: LANDTECHNIK, Bd. 52 Nr. 6 (1997)
Beschäftigungstechnik für Mastschweine im Vergleich
Creators: name: Reichel, Angela
name: Beck, Jürgen
name: Jungbluth, Thomas
name: Troxler, Josef
Publisher: name: LANDTECHNIK
Year: 1997

description: Um intensive Standardhaltungssysteme artgemäß zu gestalten, wurden Techniken zur Beschäftigung von Mastschweinen entwickelt und erprobt. Damit sollen gegenseitiges Beknabbern und vor allem das Schwanzbeißen innerhalb der Tiergruppen reduziert werden, ohne dass kosten- und arbeitsintensive Änderungen am bestehenden Haltungssystem vorgenommen werden müssen. Zur Beurteilung verschiedener bekannter und neuer Beschäftigungstechniken werden in teil- und vollperforierten Buchten mehrere Mastdurchgänge von jeweils zwölf Wochen Dauer durchgeführt. Als entscheidende Kenngrößen werden die Leistung, die Gesundheit und das Verhalten der Tiere herangezogen.
description: LANDTECHNIK, Bd. 52 Nr. 6 (1997)
The Labeled Multiple Canonical Correlation Analysis for Information Fusion
Creators: name: Gao, Lei
name: Zhang, Rui
name: Qi, Lin
name: Chen, Enqing
name: Guan, Ling
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: The objective of multimodal information fusion is to mathematically analyze information carried in different sources and create a new representation which will be more effectively utilized in pattern recognition and other multimedia information processing tasks. In this paper, we introduce a new method for multimodal information fusion and representation based on the Labeled Multiple Canonical Correlation Analysis (LMCCA). By incorporating class label information of the training samples,the proposed LMCCA ensures that the fused features carry discriminative characteristics of the multimodal information representations, and are capable of providing superior recognition performance. We implement a prototype of LMCCA to demonstrate its effectiveness on handwritten digit recognition,face recognition and object recognition utilizing multiple features,bimodal human emotion recognition involving information from both audio and visual domains. The generic nature of LMCCA allows it to take as input features extracted by any means,including those by deep learning (DL) methods. Experimental results show that the proposed method enhanced the performance of both statistical machine learning (SML) methods, and methods based on DL.
Hygroskopische Festbettspeicher
Creators: name: Ziegler, Thomas
name: Richter, Gerrit
Publisher: name: LANDTECHNIK
Year: 1997

description: Die ungeregelte Belüftung von Getreideschüttungen mit solar erwärmter Luft beschleunigt zwar die Trocknung, führt jedoch zu unerwünschten Feuchteschwankungen mit der Gefahr der Übertrocknung insbesondere in den am Lufteintritt liegenden Schichten. Mit einem zwischengeschalteten Festbett aus hygroskopischem Material lässt sich der schwankende Zustand der Trocknungsluft bezüglich Temperatur und Feuchte wirkungsvoll dämpfen, Trocknungspotenzial vom Tag in die Nacht verlagern und der Trocknungsprozess auf diese Weise gleichmäßiger gestalten. Darüber hinaus können Tage mit unzureichender Solarstrahlung überbrückt werden. Hauptergebnis der Speicherung von Trocknungspotenzial ist, dass das Verderbrisiko der seit Langem bewährten Belüftungstrocknung von Körnerfrüchten auch ohne zusätzliche Heizung minimiert werden kann.
description: LANDTECHNIK, Bd. 52 Nr. 6 (1997)
Massenfluss in Kraftfuttersilos
Creators: name: Fürll, Christian
name: Hjortaas, Trygve
name: Enstad, Gisle
Publisher: name: LANDTECHNIK
Year: 1997

description: Trockenmischfuttersilos müssen in der Praxis störungsfrei laufen, Entmischungen verhindern und vor allem unzulässige Pilz- und Toxinentwicklung unterbinden. Eine wichtige Voraussetzung dafür ist eine exakte fließtechnische Optimierung und Dimensionierung, die Massenfluss bei der Entnahme sichert. ln ursprünglichen Kernflusssilos kann Massenfluss durch das Installieren von Einbautrichtern nach dem „cone in cone“-Konzept erreicht werden. Dazu wurden experimentelle Untersuchungen durchgeführt.
description: LANDTECHNIK, Bd. 52 Nr. 6 (1997)
Os media e o ambiente: Análise de questões ambientais em três jornais de Moçambique
Creators: name: Joaquim Nhampoca
Publisher: name: Zenodo
Year: 2023

description: R E S U M OO presente artigo buscou analisar as matérias jornalísticas sobre questões ambientais publicadas em três jornais de maior circulação em Moçambique, nomeadamente, o Diário de Moçambique, o Notícias e O País, tendo recorrido à revisão de literatura e análise de conteúdo de 90 recortes de notícias ambientais. A análise e discussão das matérias publicadas permitiu a classificação do conteúdo em categorias de problemas ambientais, sendo que no conjunto dos jornais, as chuvas e inundações constituíram a notícia ambiental mais veiculada, seguido de ventos e ciclones, gestão de resíduos e biodiversidade. A maioria das notícias ambientais aparece como acontecimento de cariz informativo, destacando os impactos sociais e económicos dos eventos ambientais adversos. As causas da destruição ambiental e a acção humana sobre o ambiente são pouco evidenciadas, suscitando a especialização dos jornalistas em assuntos ambientais. Todavia, o jornal Notícias é o único com uma página regular sobre assuntos ambientais, denominada Ciência, Ambiente e Tecnologia.Palavras-Chaves: Ambiente, matérias jornalísticas, media, meios de comunicação social.
Discriminative Multiple Canonical Correlation Analysis for Information Fusion
Creators: name: Gao, Lei
name: Qi, Lin
name: Chen, Enqing
name: Guan, Ling
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: In this paper, we propose the Discriminative Multiple Canonical Correlation Analysis (DMCCA) for multimodal information analysis and fusion. DMCCA is capable of extracting more discriminative characteristics from multimodal information representations. Specifically, it finds the projected directions which simultaneously maximize the within-class correlation and minimize the between-class correlation, leading to better utilization of the multimodal information. In the process, we analytically demonstrate that the optimally projected dimension by DMCCA can be quite accurately predicted, leading to both superior performance and substantial reduction in computational cost. We further verify that Canonical Correlation Analysis (CCA), Multiple Canonical Correlation Analysis (MCCA) and Discriminative Canonical Correlation Analysis (DCCA) are special cases of DMCCA, thus establishing a unified framework for Canonical Correlation Analysis. We implement a prototype of DMCCA to demonstrate its performance in handwritten digit recognition and human emotion recognition. Extensive experiments show that DMCCA outperforms the traditional methods of serial fusion, CCA, MCCA and DCCA.
Eiswasserkühlung bei Waschgemüse
Creators: name: Thomas, Jens
name: Geyer, Martin
Publisher: name: LANDTECHNIK
Year: 1997

description: Zur Erhaltung der inneren und äußeren Qualität von Gemüse ist eine möglichst schnelle Abkühlung nach der Ernte erforderlich. Eine bisher mit Waschwasser bei Umgebungstemperatur arbeitende Gemüse-Waschlinie wurde mit einem Lamellen-Rieselkühler zur Eiswasserbereitung ausgestattet. Durch großräumige Überbauung der letzten Reinigungsstation (Tauchbecken) mit einem Kühlmantel, der gleichzeitig die Aufnahme der fertig gepackten und vorgekühlten Gutpaletten erlaubt, werden die an der Eiswasseranlage auftretenden Kälteverluste genutzt und eine geschlossene Kühlkette aufrechterhalten. Für die Qualitätsverbesserung entstehen durch die Investition sowie den zusätzlichen Energiebedarf der Anlage Mehrkosten von etwa 2,5 Pfennigen pro kg Frischmarktware. Die in Kooperation mit dem ATB in einem Berliner Praxisbetrieb realisierte Anlage wird vorgestellt.
description: LANDTECHNIK, Bd. 52 Nr. 6 (1997)
First-principles theory of proximity spin-orbit torque on a two-dimensional magnet: Current-driven antiferromagnet-to-ferromagnet reversible transition in bilayer CrI₃
Creators: name: Dolui, Kapildeb
name: Petrovic, Marko D.
name: Zollner, Klaus
name: Plechac, Petr
name: Fabian, Jaroslav
name: Nikolic, Branislav K.
Publisher: name: Universität Regensburg
Year: 2020
Subjects: subject: 530 Physik

description: The recently discovered two-dimensional (2D) magnetic insulator CrI₃ is an intriguing case for basic research and spintronic applications since it is a ferromagnet in the bulk, but an antiferromagnet in bilayer form, with its magnetic ordering amenable to external manipulations. Using first-principles quantum transport approach, we predict that injecting unpolarized charge current parallel to the interface of bilayer-CrI₃/monolayer-TaSe₂ van der Waals heterostructure will induce spin-orbit torque (SOT) and thereby driven dynamics of magnetization on the first monolayer of CrI₃ in direct contact with TaSe₂. By combining calculated complex angular dependence of SOT with the Landau-Lifshitz-Gilbert equation for classical dynamics of magnetization, we demonstrate that current pulses can switch the direction of magnetization on the first monolayer to become parallel to that of the second monolayer, thereby converting CrI₃ from antiferromagnet to ferromagnet while not requiring any external magnetic field. We explain the mechanism of this reversible current-driven nonequilibrium phase transition by showing that first monolayer of CrI₃ carries current due to evanescent wavefunctions injected by metallic transition metal dichalcogenide TaSe₂, while concurrently acquiring strong spin-orbit coupling (SOC) via such proximity effect, whereas the second monolayer of CrI₃ remains insulating. The transition can be detected by passing vertical read current through the vdW heterostructure, encapsulated by bilayer of hexagonal boron nitride and sandwiched between graphite electrodes, where we find tunneling magnetoresistance of $\backslashsimeq 240$%.
Emissionsraten variabler Quelltypen in der Landwirtschaft
Creators: name: Depta, Georg
name: Neser, Stefan
name: Becher, Sabine C.
name: Stanzel, Hans
name: Gronauer, Andreas
name: Schön, Hans
name: Stockhause, Martina
name: Sedlmaier, Achim
name: Schäfer, Klaus
name: Seedorf, Jens
name: Hartung, Jörg
Publisher: name: LANDTECHNIK
Year: 1997

description: Emissionen durch Tierhaltung haben große ökosystemare (NH3) und klimarelevante Bedeutung (N20, CH4, C02, CO). Bisherige Messverfahren ermöglichen bei variabler Quellkonfiguration keine Multigasanalysen mit ausreichender Empfindlichkeit. Mit der Fourier-Transformierten-Infrarot (FTIR)-Spektroskopie gibt es ein Messverfahren, das an allen Quelltypen zusammen mit verschiedenen Methoden eingesetzt werden kann. ln diesem Beitrag soll über Anwendungen dieser Messtechnik berichtet werden.
description: LANDTECHNIK, Bd. 52 Nr. 6 (1997)
A dinâmica do uso de fertilizantes químicos e insecticidas na agricultura em Moçambique, Província do Niassa
Creators: name: Joaquim Miranda Maloa
Publisher: name: Zenodo
Year: 2023

description: RESUMOCom ênfase numa pesquisa interdisciplinar, este artigo busca avaliar a dinâmica do uso de fertilizantes químicos e insecticidas na agricultura do Niassa, entre 2013 – 2015. O estudo centrou os seus objectivos específicos nos seguintes eixos analíticos: descrever o comportamento do uso de fertilizantes químicos e insecticidas na agricultura da província e por último, identificar os factores determinantes desta utilização. Para responder os objectivos propostos recorreu-se a abordagem mista (qualitativa e quantitativa), fundamentada por meio de documentos, observação directa e reportagens jornalísticas. Os resultados dos dados mostram que nos últimos três anos de (2013 -2015), a província consumiu, em 2014, 45.370 litros de insecticidas e em 2015, 58.056 litros, correspondendo a um acréscimo de 28%. De igual modo, foram utilizados, em 2014, 141.145.5 kg de fertilizantes e em 2015, 266.792,5 kg, correspondendo a um crescimento de 89%. Os factores determinantes da utilização de fertilizantes químicos e insecticidas na agricultura estão associados à dinâmica do crescimento do mercado de consumo alimentar, da população e dos problemas estruturais da agricultura moçambicana. As conclusões indicam que o crescimento do uso de fertilizantes químicos e insecticidas na agricultura do Niassa tem implicações no meio ambiente e na saúde pública da população, através da contaminação dos solos e dos alimentos.Palavras chave: Dinâmica; Agricultura; fertilizantes; insecticidas; Niassa.
Diagnostic for the characterization of nanometric structures in high temperature reactive systems
Creators: name: Commodo, Mario
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2008

description: It is now well know that the fraction of particulate mater in the ambient air defined as ultrafine particles can be considered the most critical for adverse human health effects because of their chemical composition and the ability of these particles to penetrate deeply into the respiratory tract. Moreover combustion has been recognised as the major source of harmful fine and ultrafine particles.
The aim of the present thesis work is to investigate carbonaceous nanoparticles formation by combustion processes. An experimental procedure based on the use of the fifth harmonic of a Nd:YAG laser at 213 nm as exiting source and on an accurate signals acquisition has been
realized. In-situ spectral optical measurements based on a combination of: Laser Induced Fluorescence (LIF), Laser Induced Incandescence (LII), Light Extinction (Kext) and Laser Light Scattering (Qvv) techniques have allowed to follow particles formation and their evolution directly in combustion environments with high spatial and temporal resolution. Laminar premixed and laminar and turbulent diffusion flames have been investigated burning ethylene,
methane and benzene as fuels. Optical results are then compared with Particle Size Distribution Function (PSDF) obtained by Scanning Mobility Particles Sizer (SMPS) measurements in same flame conditions. An experimental investigation of the particulate emissions from commercial
burners for home appliances fueled with natural gas has been also included.
The experimental evidences, in according to literature in laminar premixed conditions, allow to conclude that two classes of nanoparticles are formed in flame:Nanoparticles of Organic Carbon (NOC) with sizes smaller than three nanometers and “primary” soot particles with sizes larger
than ten nanometers that lead to the formation of soot aggregates. Moreover, the thesis work shows that these combustion-generated nanoparticles strongly depend on the type of fuel, type of combustion system and eventual exhaust treatment systems.
Waiting-time dependent non-equilibrium phase diagram of simple glass- and gel-forming liquids
Creators: name: Zepeda-López, Jesús Benigno
name: Medina-Noyola, Magdaleno
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Under many circumstances many soft and hard materials are present in a puzzling wealth of non-equilibrium amorphous states, whose properties are not stationary and depend on preparation. They are often summarized in unconventional "phase diagrams" that exhibit new "phases" and/or "transitions", in which the time, however, is an essential variable. This work proposes a solution to the problem of theoretically defining and predicting these non-equilibrium phases and their time-evolving phase diagrams, given the underlying molecular interactions. We demonstrate that these non-equilibrium phases and the corresponding non-stationary (i.e., aging) phase diagrams can indeed be defined and predicted using the kinetic perspective of a novel non-equilibrium statistical mechanical theory of irreversible processes. This is illustrated with the theoretical description of the transient process of dynamic arrest into non-equilibrium amorphous solid phases, of an instantaneously-quenched simple model fluid involving repulsive hard-sphere plus attractive square well pair interactions.
description: 16 pages, 7 figures. The following article has been accepted by The Journal of Chemical Physics. After it is published, it will be found at https://doi.org/10.1063/5.0039524
Dilepton production as a measure of QGP thermalization time
Creators: name: Martinez, Mauricio
name: Strickland, Michael
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss dilepton production from a quark-gluon plasma which has a time-dependent anisotropy in momentum space. A phenomenological model for the hard momentum scale, p_hard(tau) and the plasma anisotropy parameter, xi(tau), is presented. The model interpolates between early-time 1+1 free streaming behavior (tau << tau_iso) and late-time ideal 1+1 hydrodynamical behavior (tau >> tau_iso). Using this model, we find that the dilepton rate arising from electromagnetic annihilations of quarks in the kinematic range 3
description: 4 pages, 3 figures, talk given at the 20th International Conference on Ultrarelativistic Nucleus-Nucleus Collisions: Quark Matter 2008 (QM 2008), Jaipur, India, 4-10 Feb 2008
Predicting post-operative right ventricular failure using video-based deep learning
Creators: name: Shad, Rohan
name: Quach, Nicolas
name: Fong, Robyn
name: Kasinpila, Patpilai
name: Bowles, Cayley
name: Castro, Miguel
name: Guha, Ashrith
name: Suarez, Eddie
name: Jovinge, Stefan
name: Lee, Sangjin
name: Boeve, Theodore
name: Amsallem, Myriam
name: Tang, Xiu
name: Haddad, Francois
name: Shudo, Yasuhiro
name: Woo, Y. Joseph
name: Teuteberg, Jeffrey
name: Cunningham, John P.
name: Langlotz, Curt P.
name: Hiesinger, William
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: Non-invasive and cost effective in nature, the echocardiogram allows for a comprehensive assessment of the cardiac musculature and valves. Despite progressive improvements over the decades, the rich temporally resolved data in echocardiography videos remain underutilized. Human reads of echocardiograms reduce the complex patterns of cardiac wall motion, to a small list of measurements of heart function. Furthermore, all modern echocardiography artificial intelligence (AI) systems are similarly limited by design - automating measurements of the same reductionist metrics rather than utilizing the wealth of data embedded within each echo study. This underutilization is most evident in situations where clinical decision making is guided by subjective assessments of disease acuity, and tools that predict disease onset within clinically actionable timeframes are unavailable. Predicting the likelihood of developing post-operative right ventricular failure (RV failure) in the setting of mechanical circulatory support is one such clinical example. To address this, we developed a novel video AI system trained to predict post-operative right ventricular failure (RV failure), using the full spatiotemporal density of information from pre-operative echocardiography scans. We achieve an AUC of 0.729, specificity of 52% at 80% sensitivity and 46% sensitivity at 80% specificity. Furthermore, we show that our ML system significantly outperforms a team of human experts tasked with predicting RV failure on independent clinical evaluation. Finally, the methods we describe are generalizable to any cardiac clinical decision support application where treatment or patient selection is guided by qualitative echocardiography assessments.
description: 12 pages, 3 figures