cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Fishery acoustic indices for assessing Atlantic herring populations
Creators: name: Claytor, Ross Richardson
Publisher: name: University of British Columbia
Year: 2009

description: A method for measuring the spatial and temporal distribution offish school densities and exploitation rates using fishery collected acoustic data and voronoi-natural neighborhood analysis is described. A herring purse seiner fishing on non-spawning feeding aggregations, and a herring gillnetter fishing on smaller, highly dense spawning aggregations, in the southern Gulf of St.Lawrence, Canada, collected acoustic data during regular fishing activity for this study. The relationship between gillnet catch rates (kg/net) estimated for assessment of this stock reached asymptotic values at lower than expected densities and was not useful for tracking daily trends in school density. Gillnet and purse seine catch per metre searched were linearly related to density, and likely are suitable abundance indices for stock assessment estimates. An individual boat with data collected in this manner was found to represent trends in the entire fleet. There was a threshold density beyond which exploitation rates remained low. This threshold provides managers with a method for identifying and eliminating spatial and temporal trends in high exploitation rates and preventing overfishing. A simulation model calibrated with data from the Pictou 1997 inshore gillnet fishery compared the properties of abundance indices derived from fishery acoustic data to those derived from survey indices. The indices were examined over five fish distribution types ranging from a single spike to a uniform flat distribution, four conditions of fishing and fish movement, and sixteen stock sizes for each of these distribution and conditions. These data are suitable for deriving abundance indices provided the searching covers the entire temporal and spatial distribution of the population. Fishery acoustic abundance indices provide a basis for adopting a decision rule management paradigm and allowing the metapopulation structure of Atlantic herring to become the basic management unit for this species. These results represent an important alternative to the current F₀.₁ management paradigm for Atlantic herring populations and offer an opportunity to develop a more transparent and responsive management system for the long term viability of Atlantic herring fisheries.
ECONOMIES OF SCALE IN AGRICULTURE: A REEXAMINATION OF THE EVIDENCE
Creators: name: Kislev, Yoav
name: Peterson, Willis L.
name: Kislev, Yoav
name: Peterson, Willis L.
Publisher: name: Unknown
Year: 1991
Subjects: Industrial Organization

description: It is generally accepted that agricultural production is characterized by increasing returns to scale. In this paper we examine the evidence allegedly supporting this assertation and come to the conclusion that the hypothesis of increasing returns is not warranted. The essence of our argument is that if increasing returns were important we would have seen huge "food factories" dominating the industry. Instead, the dominating form of organization is the family unit and farms come in a multitude of sizes--as can be expected in a constant cost industry.
Terawatt attosecond X-ray source driven by a plasma accelerator
Creators: name: Emma, Claudio
name: Xu, Xinlu
name: Fisher, Andrew
name: MacArthur, James P.
name: Cryan, James
name: Hogan, Mark J.
name: Musumeci, Pietro
name: White, Glen
name: Marinelli, Agostino
Publisher: name: arXiv
Year: 2020
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Plasma accelerators can generate ultra high brightness electron beams which open the door to light sources with smaller physical footprint and properties un-achievable with conventional accelerator technology. In this paper we show that electron beams from Plasma WakeField Accelerators (PWFAs) can generate few-cycle coherent tunable soft X-ray pulses with TW peak power and a duration of tens of attoseconds, an order of magnitude more powerful, shorter and with better stability than state-of-the-art X-ray Free Electron Lasers (XFELs). Such a light source would significantly enhance the ability to experimentally investigate electron dynamics on ultrafast timescales, having broad-ranging impact across multiple scientific fields. Rather than starting from noise as in typical XFELs, the X-rays emission in this approach is driven by coherent radiation from a pre-bunched, near Mega Ampere (MA) current electron beam of attosecond duration. This relaxes the restrictive tolerances which have hindered progress towards utilizing plasma accelerators as coherent X-ray drivers thus far, presenting a new paradigm for advanced-accelerator light source applications.
Post Pandemic Food Trends
Creators: name: Sreelakshmi, A. S1., Seeja Thomachan Panjikkaran2, Sharon, C. L3., Lakshmy, P. S4., Suman, K. T5., Athira Raj6, and Delgi Jospeh, C7.
Publisher: name: The Science world a Monthly e magazine
Year: 2024

description:  

1.     Introduction

“Pandemic” is a term which is there in everyone’s life for some years back. The world has seen numerous pandemics since the 6th century. But the most significant effects were made by the Covid-19 pandemic. The global crisis and two consecutive lockdowns have necessitated a rethinking of food options. Health and well-being have become a priority, and there has been a significant rethinking of what people eat and how it affects the environment.
DUMMY VARIABLES AND THE STATISTICAL EFFICIENCY OF THE ESTIMATORS
Creators: name: Soliman, M.A.
name: Soliman, M.A.
Publisher: name: Unknown
Year: 1969
Subjects: Research Methods/ Statistical Methods

description: This paper is concerned with investigating the efficiency of estimators using dummy variables relative to the efficiency of the estimators obtained from "separate" functions. First the advantages of using dummy variables are discussed. Second, the proof of the efficiency criteria of estimators obtained using the dummy variables is developed. Third, the consequences of using dummy variables when the variance by season is different are discussed. Finally, a simple case is shown.
Doppler tomography of the transient X-ray binary Centaurus X-4 in quiescence
Creators: name: D'Avanzo, P.
name: Campana, S.
name: Casares, J.
name: Israel, G. L.
name: Covino, S.
name: Charles, P. A.
name: Stella, L.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present ESO-NTT low resolution spectroscopy of the neutron star X-ray transient Cen X-4 in quiescence over a complete orbital cycle. Our data reveal the presence of a K3-7 V companion which contributes 63% to the 5600-6900A flux and orbits the neutron star with a velocity semi-amplitude of K_2=145.8 +/- 1.0 km s^{-1}. This, combined with a previous determination of the inclination angle and mass ratio, yields a neutron star and companion mass of M_1=1.5 +/- 1.0 M_Sun and M_2=0.31 +/- 0.27 M_Sun, respectively. The mass donor is thus undermassive for the inferred spectral type indicating it is probably evolved, in agreement with previous studies. Doppler tomography of the H_alpha line shows prominent emission located on the companion and a slightly asymmetric accretion disc distribution similar to that seen in systems with precessing eccentric discs. Strong H_alpha emission from the companion can be explained by X-ray irradiation from the primary. No evidence is found for a hot spot in H_alpha, whereas one is revealed via Doppler tomography of the HeI lines. This can be interpreted as the hot spot and outer regions of the disc being at a higher temperature than in other systems.
description: 9 pages, 5 figures, accepted for publication in A&A
The Birth of High Mass Stars: Accretion and/or Mergers?
Creators: name: Bally, John
name: Zinnecker, Hans
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The observational consequences of the merger scenario for massive star formation are explored and contrasted with the gradual accumulation of mass by accretion. Protostellar mergers may produce high luminosity infrared flares lasting years to centuries followed by a luminosity decline on the Kelvin-Helmholtz time-scale of the merger product. Mergers may be surrounded by thick tori of expanding debris, impulsive wide-angle outflows, and shock induced maser and radio continuum emission. Collision products are expected to have fast stellar rotation and a large multiplicity fraction. Close encounters or mergers will produce circumstellar debris disks with an orientation that differs form that of a pre-existing disk. The extremely rare merger of two stars close to the upper-mass end of the IMF may be a possible pathway to hypernova generated gamma-ray bursters. While accretional growth can lead to the formation of massive stars in isolation or in loose clusters, mergers can only occur in high-density cluster environments. It is proposed that the outflow emerging from the OMC1 core in the Orion molecular cloud was produced by a protostellar merger that released between $10^{48}$ to $10^{49}$ ergs less than a thousand years ago.
FOREIGN TRADE, MARKETING SERVICES AND THE TECHNOLOGICAL CHARACTERISTICS OF A DEVELOPING ECONOMY
Creators: name: Roe, Terry L.
name: Shane, Mathew
name: Roe, Terry L.
name: Shane, Mathew
Publisher: name: Unknown
Year: 1977
Subjects: International Development

description: This study focuses on the relationships between export performance, marketing services and technological differences between industries in Malaysia. The maintained hypothesis of this study is that performance of marketing services is a crucial determinant to successful penetration of the export market by developing economies.
Matrix Product States and Projected Entangled Pair States: Concepts, Symmetries, and Theorems
Creators: name: Cirac, Ignacio
name: Perez-Garcia, David
name: Schuch, Norbert
name: Verstraete, Frank
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The theory of entanglement provides a fundamentally new language for describing interactions and correlations in many body systems. Its vocabulary consists of qubits and entangled pairs, and the syntax is provided by tensor networks. We review how matrix product states and projected entangled pair states describe many-body wavefunctions in terms of local tensors. These tensors express how the entanglement is routed, act as a novel type of non-local order parameter, and we describe how their symmetries are reflections of the global entanglement patterns in the full system. We will discuss how tensor networks enable the construction of real-space renormalization group flows and fixed points, and examine the entanglement structure of states exhibiting topological quantum order. Finally, we provide a summary of the mathematical results of matrix product states and projected entangled pair states, highlighting the fundamental theorem of matrix product vectors and its applications.
description: Review article. 72 pages
Jarves: The digital RDM assistant
Creators: name: Hamann, Tobias
Publisher: name: RWTH Aachen University
Year: 2023

description: RDA 20. Plenary Meeting - Gothenburg (Hybrid)" of the Research Data Alliance, Gothenburg, Sweden, 21 Mar 2023 - 23 Mar 2023; 12 Folien (2023). doi:10.5281/ZENODO.7715684
Second-order operators with degenerate coefficients
Creators: name: ter Elst, A. F. M.
name: Robinson, Derek W.
name: Sikora, Adam
name: Zhu, Yueping
Publisher: name: arXiv
Year: 2006
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We consider properties of second-order operators $H = -\sum^d_{i,j=1} \partial_i \, c_{ij} \, \partial_j$ on $\Ri^d$ with bounded real symmetric measurable coefficients. We assume that $C = (c_{ij}) \geq 0$ almost everywhere, but allow for the possibility that $C$ is singular. We associate with $H$ a canonical self-adjoint viscosity operator $H_0$ and examine properties of the viscosity semigroup $S^{(0)}$ generated by $H_0$. The semigroup extends to a positive contraction semigroup on the $L_p$-spaces with $p \in [1,\infty]$. We establish that it conserves probability, satisfies $L_2$~off-diagonal bounds and that the wave equation associated with $H_0$ has finite speed of propagation. Nevertheless $S^{(0)}$ is not always strictly positive because separation of the system can occur even for subelliptic operators. This demonstrates that subelliptic semigroups are not ergodic in general and their kernels are neither strictly positive nor Hölder continuous. In particular one can construct examples for which both upper and lower Gaussian bounds fail even with coefficients in $C^{2-\varepsilon}(\Ri^d)$ with $\varepsilon > 0$.
description: 44 pages
Bt Corn Farmer Compliance with Insect Resistance Management Requirements: Results from the 2002 Minnesota and Wisconsin Farm Polls
Creators: name: Buttel, Frederick H.
name: Merrill, Jeanne
name: Chen, Lucy
name: Goldberger, Jessica
name: Hurley, Terrance M.
name: Buttel, Frederick H.
name: Merrill, Jeanne
name: Chen, Lucy
name: Goldberger, Jessica
name: Hurley, Terrance M.
Publisher: name: Unknown
Year: 2005
Subjects: subject: Crop Production/Industries
subject: Bt corn
subject: compliance
subject: Insect Resistance Management
subject: refuge

description: The U.S. Environmental Protection Agency (EPA) reregistered Bt corn in 2001 with mandatory Insect Resistance Management (IRM) requirements in order to promote sustainable use by farmers. Since then studies report IRM compliance rates ranging from 80 to 90 percent. Using survey data from Minnesota and Wisconsin, we show that previous compliance rate estimates are likely too high because they do not use a comprehensive measure for compliance. With a more comprehensive measure, we find compliance rates ranging between 60 to 75 percent.
Intrinsic dissipative Floquet superconductors beyond mean-field theory
Creators: name: Yang, Qinghong
name: Yang, Zhesen
name: Liu, Dong E.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the intrinsic superconductivity in a dissipative Floquet electronic system in the presence of attractive interactions. Based on the functional Keldysh theory beyond the mean-field treatment, we find that the system shows a time-periodic bosonic condensation and reaches an intrinsic dissipative Floquet superconducting (SC) phase. Due to the interplay between dissipations and periodic modulations, the Floquet SC gap becomes "soft" and contains the diffusive fermionic modes with finite lifetimes. However, bosonic modes of the bosonic condensation are still propagating even in the presence of dissipations.
description: 14 pages, 5 figures
A Gentle (without Chopping) Approach to the Full Kostant-Toda Lattice
Creators: name: Damianou, Pantelis A.
name: Magri, Franco
Publisher: name: arXiv
Year: 2005
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: In this paper we propose a new algorithm for obtaining the rational integrals of the full Kostant-Toda lattice. This new approach is based on a reduction of a bi-Hamiltonian system on gl(n,R). This system was obtained by reducing the space of maps from Z_n to GL(n,R) endowed with a structure of a pair of Lie-algebroids.
description: Published in SIGMA (Symmetry, Integrability and Geometry: Methods and Applications) at http://www.emis.de/journals/SIGMA/
Time-fractional derivatives in relaxation processes: a tutorial survey
Creators: name: Mainardi, Francesco
name: Gorenflo, Rudolf
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mathematical Physics (math-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Dynamical Systems (math.DS)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 26A33, 33E12, 33C60, 44A10 (Primary); 45K05, 74D05 (Secondary)

description: The aim of this tutorial survey is to revisit the basic theory of relaxation processes governed by linear differential equations of fractional order. The fractional derivatives are intended both in the Rieamann-Liouville sense and in the Caputo sense. After giving a necessary outline of the classical theory of linear viscoelasticity, we contrast these two types of fractional derivatives in their ability to take into account initial conditions in the constitutive equations of fractional order. We also provide historical notes on the origins of the Caputo derivative and on the use of fractional calculus in viscoelasticity.
description: 40 pages, 5 Figures
1996 ANNUAL REPORT OF THE SOUTHEASTERN MINNESOTA FARM BUSINESS MANAGEMENT ASSOCIATION
Creators: name: Olson, Kent D.
name: Westman, Lorin L.
name: Nordquist, Dale W.
name: Olson, Kent D.
name: Westman, Lorin L.
name: Nordquist, Dale W.
Publisher: name: Unknown
Year: 1997
Subjects: Farm Management

description: In the Southeastern Association the average accrual net farm income in 1996 was $67,579 for the 61 farms included in this report. The decrease is due to lower inventory levels since the increase in gross cash income was higher than the increase in total cash farm expenses. Even though this is a decrease of 8% from the 1995 average, the 1996 net farm income is still one of the highest on record. Only in 1978, 1990, 1991, 1994 and 1995 was average nominal profit also greater than $50,000. When adjusted by the Consumer Price Index (to provide a constant dollar or buying power comparison), the average 1996 profit is exceeded only in 1990 and 1995. The 20% of these 61 farms with the highest net farm income had an average net farm income of $196,161 in 1996; the low 20%, -$6,094. This is an increase for the high group; a decrease for the low group. Average gross cash farm income in 1996 was $261,050 for all 61 farms-- an 8% increase from 1995. Four sources of sales made up 84% of total income in 1996: milk, hogs, corn and soybeans. Compared to 1995, corn sales increased by $4,722; soybean sales by $8,591; and milk by $14,252. Sales from beef finishing decreased by $4,815. Government payments (of all types) decreased from an average of $13,382 in 1995 to $6,412 in 1996. Government payments dropped to 2% of total income in 1996. Average total cash expenses were $211,486 in 1996--an increase of 6% from 1995. As a percentage of both cash expenses and depreciation, feed expenses were 19% in 1996, up from 16% in 1995. Seed, fertilizer, and crop chemicals were steady at 19% of the total. Interest expense was 7% of the total again. Both the rate of return on assets (ROA) and the rate of return to equity (ROE) were 8% in 1996--a decrease from 9% and 10%, respectively, in 1995. On a cost basis value, average total equity (of the sole proprietors) was $393,584 at the end of 1996--an increase of $41,794 during the year. After a decline during 1993, average equity has improved steadily since 1986. At the end of 1996, the average debt-asset ratio was down slightly from 1993. The report provides additional information on profitability, liquidity, and solvency as well as other whole-farm information and detailed information on crop and livestock enterprises. Also reported are whole-farm financial condition and performance by county, sales size class, and type of farm and corn and soybean returns by county.
Más libertad de expresión frente a la violencia
Creators: name: Suing, Abel
Publisher: name: Zenodo
Year: 2024
Subjects: comunicación
seguridad
Ecuador
paz
libertad
expresión

description: Publicación presentada en la sección de opinión del diario digital hora 32 https://hora32.com.ec/ que se edita en Loja (Ecuador)
Identifying Training Stop Point with Noisy Labeled Data
Creators: name: Kamabattula, Sree Ram
name: Devarajan, Venkat
name: Namazi, Babak
name: Sankaranarayanan, Ganesh
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Training deep neural networks (DNNs) with noisy labels is a challenging problem due to over-parameterization. DNNs tend to essentially fit on clean samples at a higher rate in the initial stages, and later fit on the noisy samples at a relatively lower rate. Thus, with a noisy dataset, the test accuracy increases initially and drops in the later stages. To find an early stopping point at the maximum obtainable test accuracy (MOTA), recent studies assume either that i) a clean validation set is available or ii) the noise ratio is known, or, both. However, often a clean validation set is unavailable, and the noise estimation can be inaccurate. To overcome these issues, we provide a novel training solution, free of these conditions. We analyze the rate of change of the training accuracy for different noise ratios under different conditions to identify a training stop region. We further develop a heuristic algorithm based on a small-learning assumption to find a training stop point (TSP) at or close to MOTA. To the best of our knowledge, our method is the first to rely solely on the \textit{training behavior}, while utilizing the entire training set, to automatically find a TSP. We validated the robustness of our algorithm (AutoTSP) through several experiments on CIFAR-10, CIFAR-100, and a real-world noisy dataset for different noise ratios, noise types, and architectures.
description: Published in: 2020 International Conference on Computational Science and Computational Intelligence (CSCI)
Variations of Casimir energy from a superconducting transition
Creators: name: Bimonte, Giuseppe
name: Calloni, Enrico
name: Esposito, Giampiero
name: Rosa, Luigi
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We consider a five-layer Casimir cavity, including a thin superconducting film. We show that when the cavity is cooled below the critical temperature for the onset of superconductivity, the sharp variation (in the microwave region) of the reflection coefficient of the film produces a variation in the value of the Casimir energy. Even though the relative variation in the Casimir energy is very small, its magnitude can be comparable to the condensation energy of the superconducting film, and thus causes a significant increase in the value of the critical magnetic field, required to destroy the superconductivity of the film. The proposed scheme might also help clarifying the current controversy about the magnitude of the contribution to Casimir free energy from the TE zero mode, as we find that alternative treatments of this mode strongly affect the shift of critical field.
description: RevTex 4, 15 pages, 8 figures. Revised version with improved presentation, a brief description of the ALADIN experiment, and a few references added
DAIRY MARKETS, POLICIES, AND TRADE IN EASTERN EUROPE AND THE FORMER SOVIET UNION
Creators: name: Swinnen, Johan F.M.
name: Dries, Liesbeth
name: Gow, Hamish R.
name: Swinnen, Johan F.M.
name: Dries, Liesbeth
name: Gow, Hamish R.
Publisher: name: Unknown
Year: 2001
Subjects: subject: Agricultural and Food Policy
subject: Marketing
subject: FOS: Economics and business
subject: International Relations/Trade

description: This paper was presented at the INTERNATIONAL TRADE IN LIVESTOCK PRODUCTS SYMPOSIUM in Auckland, New Zealand, January 18-19, 2001. The Symposium was sponsored by: the International Agricultural Trade Research Consortium, the Venture Trust, Massey University, New Zealand, and the Centre for Applied Economics and Policy Studies, Massey University. Dietary changes, especially in developing countries, are driving a massive increase in demand for livestock products. The objective of this symposium was to examine the consequences of this phenomenon, which some have even called a "revolution." How are dietary patterns changing, and can increased demands for livestock products be satisfied from domestic resources? If so, at what cost? What will be the flow-on impacts, for example, in terms of increased demands for feedgrains and the pressures for change within marketing systems? A supply-side response has been the continued development of large-scale, urban-based industrial livestock production systems that in many cases give rise to environmental concerns. If additional imports seem required, where will they originate and what about food security in the importing regions? How might market access conditions be re-negotiated to make increased imports achievable? Other important issues discussed involved food safety, animal health and welfare and the adoption of biotechnology, and their interactions with the negotiation of reforms to domestic and trade policies. Individual papers from this conference are available on AgEcon Search. If you would like to see the complete agenda and set of papers from this conference, please visit the IATRC Symposium web page at: http://www1.umn.edu/iatrc.intro.htm
LIVESTOCK PRODUCTS TRADE: PROSPECTS FOR LIBERALISATION
Creators: name: Andrews, Neil
name: Andrews, Neil
Publisher: name: Unknown
Year: 2001
Subjects: International Relations/Trade

description: This paper was presented at the INTERNATIONAL TRADE IN LIVESTOCK PRODUCTS SYMPOSIUM in Auckland, New Zealand, January 18-19, 2001. The Symposium was sponsored by: the International Agricultural Trade Research Consortium, the Venture Trust, Massey University, New Zealand, and the Centre for Applied Economics and Policy Studies, Massey University. Dietary changes, especially in developing countries, are driving a massive increase in demand for livestock products. The objective of this symposium was to examine the consequences of this phenomenon, which some have even called a "revolution." How are dietary patterns changing, and can increased demands for livestock products be satisfied from domestic resources? If so, at what cost? What will be the flow-on impacts, for example, in terms of increased demands for feedgrains and the pressures for change within marketing systems? A supply-side response has been the continued development of large-scale, urban-based industrial livestock production systems that in many cases give rise to environmental concerns. If additional imports seem required, where will they originate and what about food security in the importing regions? How might market access conditions be re-negotiated to make increased imports achievable? Other important issues discussed involved food safety, animal health and welfare and the adoption of biotechnology, and their interactions with the negotiation of reforms to domestic and trade policies. Individual papers from this conference are available on AgEcon Search. If you would like to see the complete agenda and set of papers from this conference, please visit the IATRC Symposium web page at: http://www1.umn.edu/iatrc.intro.htm
The Relation between the Inclinations of Broad Line Regions and the Accretion Disk
Creators: name: Bian, W.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: According to the standard model, an active galactic nucleus (AGN) consists of an inner accretion disk with a jet around a central massive black hole, and a number of outer broad line regions (BLRs) and narrow line regions (NLRs). The geometrical relationship between the BLRs and the accretion disk is not well understood. Assuming the motion of the BLRs is virialized and its configuration is disk-like, we derived its inclination to the line of sight for a sample of AGNs from their bulge stellar velocity dispersion, their size of the BLRs and their H$β$ linewidth. Compared with the inclination of the accretion disk obtained from the X-ray Fe K$α$ emission lines, we found that there is no positive correlation between the two. Our results showed that BLRs are not coplanar with the accretion disk and that we should be cautious of using the BLRs inclination as the disk inclination. The non-coplanar geometry of the outer BLRs and the inner accretion disk provides clues to the origin of BLRs and the properties of the accretion disk. Our preferable interpretation is that BLRs arise out of the outer part of a warped accretion disk.
description: 6 pages, 1 figure
STRUCTURAL CHANGES IN CHINA'S LIVESTOCK AND FEED PRODUCTION: TRADE IMPLICATIONS
Creators: name: Tuan, Francis C.
name: Tingjun, Peng
name: Tuan, Francis C.
name: Tingjun, Peng
Publisher: name: Unknown
Year: 2001
Subjects: International Relations/Trade
Industrial Organization
Production Economics

description: This paper was presented at the INTERNATIONAL TRADE IN LIVESTOCK PRODUCTS SYMPOSIUM in Auckland, New Zealand, January 18-19, 2001. The Symposium was sponsored by: the International Agricultural Trade Research Consortium, the Venture Trust, Massey University, New Zealand, and the Centre for Applied Economics and Policy Studies, Massey University. Dietary changes, especially in developing countries, are driving a massive increase in demand for livestock products. The objective of this symposium was to examine the consequences of this phenomenon, which some have even called a "revolution." How are dietary patterns changing, and can increased demands for livestock products be satisfied from domestic resources? If so, at what cost? What will be the flow-on impacts, for example, in terms of increased demands for feedgrains and the pressures for change within marketing systems? A supply-side response has been the continued development of large-scale, urban-based industrial livestock production systems that in many cases give rise to environmental concerns. If additional imports seem required, where will they originate and what about food security in the importing regions? How might market access conditions be re-negotiated to make increased imports achievable? Other important issues discussed involved food safety, animal health and welfare and the adoption of biotechnology, and their interactions with the negotiation of reforms to domestic and trade policies. Individual papers from this conference are available on AgEcon Search. If you would like to see the complete agenda and set of papers from this conference, please visit the IATRC Symposium web page at: http://www1.umn.edu/iatrc.intro.htm
Die Feiern zum 1600. Todestag des hl. Athanasius in Kairo
Creators: name: Felmy, Karl Christian
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 22 Nr. 3 (1973): Ökumenische Rundschau, Band 22, Heft 3
Program - International Conference the Intangibles of Heritage: Concept, Recording, Safeguarding
Creators: name: Sousa, Filomena
Publisher: name: Zenodo
Year: 2021

description: 2020 – Sousa, Filomena (Invited speaker). "Recording and safeguarding ICH". International Conference the Intangibles of Heritage: Concept, Recording, Safeguarding. Erasmus Mundus Master TPTI & HERITAS – UNESCO Chair, University of Évora (Évora, Portugal). 09/23
THE DERIVED DEMAND FOR IMPORTED CHEESE INTO JAPAN BY COUNTRY
Creators: name: Washington, Andrew A.
name: Kilmer, Richard L.
name: Washington, Andrew A.
name: Kilmer, Richard L.
Publisher: name: Unknown
Year: 2001
Subjects: Demand and Price Analysis
International Relations/Trade

description: This paper was presented at the INTERNATIONAL TRADE IN LIVESTOCK PRODUCTS SYMPOSIUM in Auckland, New Zealand, January 18-19, 2001. The Symposium was sponsored by: the International Agricultural Trade Research Consortium, the Venture Trust, Massey University, New Zealand, and the Centre for Applied Economics and Policy Studies, Massey University. Dietary changes, especially in developing countries, are driving a massive increase in demand for livestock products. The objective of this symposium was to examine the consequences of this phenomenon, which some have even called a "revolution." How are dietary patterns changing, and can increased demands for livestock products be satisfied from domestic resources? If so, at what cost? What will be the flow-on impacts, for example, in terms of increased demands for feedgrains and the pressures for change within marketing systems? A supply-side response has been the continued development of large-scale, urban-based industrial livestock production systems that in many cases give rise to environmental concerns. If additional imports seem required, where will they originate and what about food security in the importing regions? How might market access conditions be re-negotiated to make increased imports achievable? Other important issues discussed involved food safety, animal health and welfare and the adoption of biotechnology, and their interactions with the negotiation of reforms to domestic and trade policies. Individual papers from this conference are available on AgEcon Search. If you would like to see the complete agenda and set of papers from this conference, please visit the IATRC Symposium web page at: http://www1.umn.edu/iatrc.intro.htm
The horizontal internetwork magnetic field: numerical simulations in comparison to observations with Hinode
Creators: name: Steiner, O.
name: Rezaei, R.
name: Schaffenberger, W.
name: Wedemeyer-Böhm, S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Observations with the Hinode space observatory led to the discovery of predominantly horizontal magnetic fields in the photosphere of the quiet internetwork region. Here we investigate realistic numerical simulations of the surface layers of the Sun with respect to horizontal magnetic fields and compute the corresponding polarimetric response in the Fe I 630 nm line pair. We find a local maximum in the mean strength of the horizontal field component at a height of around 500 km in the photosphere, where it surpasses the vertical component by a factor of 2.0 or 5.6, depending on the initial and boundary conditions. From the synthesized Stokes profiles we derive a mean horizontal field component that is, respectively, 1.6 and 4.3 times stronger than the vertical component. This is a consequence of both the intrinsically stronger flux density of, and the larger area occupied by the horizontal fields. We find that convective overshooting expels horizontal fields to the upper photosphere, making the Poynting flux positive in the photosphere, while this quantity is negative in the convectively unstable layer below it.
description: 4 pages, 3 figures, minor revisions, esp. concerning top boundary cond., ApJL accepted
Search for Signatures of Sterile Neutrinos with Double Chooz
Creators: name: The Double Chooz Collaboration
name: Abrahão, T.
name: Almazan, H.
name: Anjos, J. C. dos
name: Appel, S.
name: Barriere, J. C.
name: Bekman, I.
name: Bezerra, T. J. C.
name: Bezrukov, L.
name: Blucher, E.
name: Brugière, T.
name: Buck, C.
name: Busenitz, J.
name: Cabrera, A.
name: Cerrada, M.
name: Chauveau, E.
name: Chimenti, P.
name: Corpace, O.
name: Dawson, J. V.
name: Djurcic, Z.
name: Etenko, A.
name: Furuta, H.
name: Gil-Botella, I.
name: Givaudan, A.
name: Gomez, H.
name: Gonzalez, L. F. G.
name: Goodman, M. C.
name: Hara, T.
name: Haser, J.
name: Hellwig, D.
name: Hourlier, A.
name: Ishitsuka, M.
name: Jochum, J.
name: Jollet, C.
name: Kale, K.
name: Kaneda, M.
name: Karakac, M.
name: Kawasaki, T.
name: Kemp, E.
name: de Kerret, H.
name: Kryn, D.
name: Kuze, M.
name: Lachenmaier, T.
name: Lane, C. E.
name: Lasserre, T.
name: Lastoria, C.
name: Lhuillier, D.
name: Lima, H. P.
name: Lindner, M.
name: López-Castaño, J. M.
name: LoSecco, J. M.
name: Lubsandorzhiev, B.
name: Maeda, J.
name: Mariani, C.
name: Maricic, J.
name: Martino, J.
name: Matsubara, T.
name: Mention, G.
name: Meregaglia, A.
name: Miletic, T.
name: Milincic, R.
name: Minotti, A.
name: Navas-Nicolás, D.
name: Novella, P.
name: Oberauer, L.
name: Obolensky, M.
name: Onillon, A.
name: Oralbaev, A.
name: Palomares, C.
name: Pepe, I. M.
name: Pronost, G.
name: Reichenbacher, J.
name: Reinhold, B.
name: Schönert, S.
name: Schoppmann, S.
name: Scola, L.
name: Sharankova, R.
name: Sibille, V.
name: Sinev, V.
name: Skorokhvatov, M.
name: Soldin, P.
name: Stahl, A.
name: Stancu, I.
name: Stokes, L. F. F.
name: Suekane, F.
name: Sukhotin, S.
name: Sumiyoshi, T.
name: Sun, Y.
name: Veyssiere, C.
name: Viaud, B.
name: Vivier, M.
name: Wagner, S.
name: Wiebusch, C.
name: Yang, G.
name: Yermia, F.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences
subject: 62F03 (Primary), 62P35, 65C60 (Secondary)

description: We present a search for signatures of neutrino mixing of electron anti-neutrinos with additional hypothetical sterile neutrino flavors using the Double Chooz experiment. The search is based on data from 5 years of operation of Double Chooz, including 2 years in the two-detector configuration. The analysis is based on a profile likelihood, i.e.\ comparing the data to the model prediction of disappearance in a data-to-data comparison of the two respective detectors. The analysis is optimized for a model of three active and one sterile neutrino. It is sensitive in the typical mass range $5 \cdot 10^{-3} $ eV$^2 \lesssim Δm^2_{41} \lesssim 3\cdot 10^{-1} $ eV$^2$ for mixing angles down to $\sin^2 2θ_{14} \gtrsim 0.02$. No significant disappearance additionally to the conventional disappearance related to $θ_{13} $ is observed and correspondingly exclusion bounds on the sterile mixing parameter $θ_{14} $ as function of $ Δm^2_{41} $ are obtained.
description: accepted for publication by EPJC
Body size, food availability and seasonal rotifer community structure in Deer Lake, British Columbia
Creators: name: Schreiber, Dorothee
Publisher: name: University of British Columbia
Year: 2009

description: The differential effects of body size on species' demographic parameters has long been hypothesized to be a powerful structuring force in zooplankton communities. The size-efficiency hypothesis predicts that large species, due to metabolic efficiency and-greater effectiveness of food collection, should displace small species when food is limiting, in the absence of predation. According to the threshold-food concentration hypothesis, small-bodied rotifers achieve r=0 at a lower food concentration than large rotifers; however, large rotifers have higher maximal reproductive rates. I attempted (1) to assess the importance of food concentration in structuring the species and size composition of a natural rotifer community in Deer Lake, Burnaby B.C., and (2) describe seasonal changes in rotifer community structure with reference to temperature, competition and predation. The threshold food hypothesis relates specifically to rotifers, and its significance has been tested in published laboratory studies. Therefore, I predicted that the y-intercepts of regression equations relating food concentration (measured as size-fractioned chlorophyll a) and reproductive output would be higher for small species than for large ones, and that the slopes of these lines would be higher for large species than for small ones. I found no patterns with respect to body size in either of these two parameters; however, I found some evidence for size-efficiency within a single species, Keratella cochlearis. The large form of K. cochlearis reproduced at a significantly lower food concentration than either of the two smaller forms. Average rotifer body size of the whole community showed no change with chlorophyll concentration. Recent research which suggests that threshold food levels change along several environmental gradients may explain the lack of support my data provided for the threshold-food hypothesis. Additionally, selective grazing may change the food requirements needed for reproduction of various species. Temperature was important in determining seasonal species abundance, likely because of physiological responses of development rate to temperature. I did not find that species with high loadings on those principal components axes that were significantly correlated with Daphnia or cyclopoid copepod abundance had attributes which conferred resistance to interference competition or predation. However, spined, small Keratella cochlearis co-occured seasonally with predatory cyclopoid copepods. Although competition and predation may not have been measured adequately, or at a scale relevant to rotifer survival and reproduction, it appears that temperature is the most important factor I measured in organizing rotifer species into communities in Deer Lake.
Nonlinear wave equations and singular solutions
Creators: name: Yamane, Hideshi
Publisher: name: arXiv
Year: 2006
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35L70, 35A20

description: We construct solutions to nonlinear wave equations that are singular along a prescribed noncharacteristic hypersurface which is the graph of a function satisfying not the Eikonal but another partial differential equation of the first order. The method of Fuchsian reduction is employed.
description: 9 pages
Laser frequency stabilization to a single ion
Creators: name: Peik, Ekkehard
name: Schneider, Tobias
name: Tamm, Christian
Publisher: name: arXiv
Year: 2005
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: A fundamental limit to the stability of a single-ion optical frequency standard is set by quantum noise in the measurement of the internal state of the ion. We discuss how the interrogation sequence and the processing of the atomic resonance signal can be optimized in order to obtain the highest possible stability under realistic experimental conditions. A servo algorithm is presented that stabilizes a laser frequency to the single-ion signal and that eliminates errors due to laser frequency drift. Numerical simulations of the servo characteristics are compared to experimental data from a frequency comparison of two single-ion standards based on a transition at 688 THz in 171Yb+. Experimentally, an instability sigma_y(100 s)=9*10^{-16} is obtained in the frequency difference between both standards.
description: 15 pages, 5 figures, submitted to J. Phys. B
First-principles GW-BSE excitations in organic molecules
Creators: name: Tiago, Murilo L.
name: Chelikowsky, James R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We present a first-principles method for the calculation of optical excitations in nanosystems. The method is based on solving the Bethe-Salpeter equation (BSE) for neutral excitations. The electron self-energy is evaluated within the GW approximation, with dynamical screening effects described within time-dependent density-functional theory in the adiabatic, local approximation. This method is applied to two systems: the benzene molecule, C$_6$H$_6$, and azobenzene, C$_{12}$H$_{10}$N$_2$. We give a description of the photoisomerization process of azobenzene after an $n-π^\star$ excitation, which is consistent with multi-configuration calculations.
TRADE AND THE ENVIRONMENT. LINKING A PARTIAL EQUILIBRIUM TRADE MODEL WITH PRODUCTION SYSTEMS AND THEIR ENVIRONMENTAL CONSEQUENCES
Creators: name: Saunders, Caroline M.
name: Roningen, Vernon O.
name: Saunders, Caroline M.
name: Roningen, Vernon O.
Publisher: name: Unknown
Year: 2001
Subjects: International Relations/Trade
Environmental Economics and Policy
Production Economics

description: This paper was presented at the INTERNATIONAL TRADE IN LIVESTOCK PRODUCTS SYMPOSIUM in Auckland, New Zealand, January 18-19, 2001. The Symposium was sponsored by: the International Agricultural Trade Research Consortium, the Venture Trust, Massey University, New Zealand, and the Centre for Applied Economics and Policy Studies, Massey University. Dietary changes, especially in developing countries, are driving a massive increase in demand for livestock products. The objective of this symposium was to examine the consequences of this phenomenon, which some have even called a "revolution." How are dietary patterns changing, and can increased demands for livestock products be satisfied from domestic resources? If so, at what cost? What will be the flow-on impacts, for example, in terms of increased demands for feedgrains and the pressures for change within marketing systems? A supply-side response has been the continued development of large-scale, urban-based industrial livestock production systems that in many cases give rise to environmental concerns. If additional imports seem required, where will they originate and what about food security in the importing regions? How might market access conditions be re-negotiated to make increased imports achievable? Other important issues discussed involved food safety, animal health and welfare and the adoption of biotechnology, and their interactions with the negotiation of reforms to domestic and trade policies. Individual papers from this conference are available on AgEcon Search. If you would like to see the complete agenda and set of papers from this conference, please visit the IATRC Symposium web page at: http://www1.umn.edu/iatrc.intro.htm
Curvature formulas related to a family of stable Higgs bundles
Creators: name: Hu, Zhi
name: Huang, Pengfei
Publisher: name: arXiv
Year: 2020
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: In this paper, we investigate the geometry of the base complex manifold of an effectively parametrized holomorphic family of stable Higgs bundles over a fixed compact Kähler manifold. The starting point of our study is Schumacher-Toma/Biswas-Schumacher's curvature formulas for Weil-Petersson-type metrics, in Sect. 2, we give some applications of their formulas on the geometric properties of the base manifold. In Sect. 3, we calculate the curvature on the higher direct image bundle, which recovers Biswas-Schumacher's curvature formula. In Sect. 4, we construct a smooth and strongly pseudo-convex complex Finsler metric for the base manifold, the corresponding holomorphic sectional curvature is calculated explicitly.
description: Some minor corrections. Comments are welcome! To appear in Communications in Mathematical Physics
Hindernisse und Fortschritte auf dem Weg zur Einheit - Zur 11. Vollversammlung der Consultation on Church Union
Creators: name: Rohland, Edzard
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 22 Nr. 3 (1973): Ökumenische Rundschau, Band 22, Heft 3