cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Network Experiences Lead to the Adaption of a Firm’s Network Competence
Creators: name: Kühne, Bianka
name: Cochez, Carl
name: Gellynck, Xavier
Publisher: name: CentMA
Year: 2011
Subjects: network competence; innovation; network management

description: Networks become increasingly important as external sources of innovation for firms. Through networks firms get in
contact with different actors with whom they can exchange information and collaborate. A firm’s ability to be a
successful network actor depends on its network competence. This term can be defined as having the necessary
knowledge, skills and qualifications for networking as well as using them effectively. In this paper we investigate the
link between a firm’s network competence and the benefits resulting from it in a two‐way direction. First, the
network competence of the firm facilitates the adoption of information from other network actors which may lead
to innovation success. Second the perceived network benefits shall in their turn influence the network competence
of the firm. Consequently, firms will adapt their network strategy corresponding their experiences. The objective of
this paper is to investigate the dynamics of networking and its influence on the firm’s network competence. For this
exploratory research 3 Belgian networks are examined. In‐depth interviews are used in combination with semistructured
interview guides to conduct the research. Our results indicate that some firms perceive benefits from
their network efforts, for others it is more a burden. Furthermore, in some of our cases we found that positive
experiences with clear benefits motivate the firm to enhance its network competence. This is illustrated by the fact
that collaborations are more frequently initiated, trust is more easily build, firms are more open to communicate
information and the confidentiality threshold is overcome.
description: International Journal on Food System Dynamics, Vol 2, No 2 (2011)
Time-dependent Green's functions approach to nuclear reactions
Creators: name: Rios, Arnau
name: Danielewicz, Pawel
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Nonequilibrium Green's functions represent underutilized means of studying the time evolution of quantum many-body systems. In view of a rising computer power, an effort is underway to apply the Green's functions formalism to the dynamics of central nuclear reactions. As the first step, mean-field evolution for the density matrix for colliding slabs is studied in one dimension. The strategy to extend the dynamics to correlations is described.
description: 6 pages, 3 figures, contribution to the "2nd Workshop on nuclei and mesoscopic physics", NSCL-MSU, October 20-22, 2007
Berezin symbols and spectral measures of representation operators
Creators: name: Cahen, Benjamin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Spectral Theory (math.SP)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 47B32, 47B23, 81Q10, 81R30, 46E22, 32M10

description: Let $G$ be a Lie group with Lie algebra $\mathfrak g$ and let $π$ be a unitary representation of $G$ realized on a reproducing kernel Hilbert space. We use Berezin quantization to study spectral measures associated with operators $-idπ(X)$ for $X\in {\mathfrak g}$. As an application, we show how results about contractions of Lie group representations give rise to results on convergence of sequences of spectral measures. We give some examples including contractions of $SU(1,1)$ and $SU(2)$ to the Heisenberg group.
description: Some typos corrected
ОБРАБОТКА ПОЧВЫ И ПРЯМОЙ ПОСЕВ: АГРОФИЗИЧЕСКИЕ СВОЙСТВА ЧЕРНОЗЕМОВ И УРОЖАЙНОСТЬ ПОЛЕВЫХ КУЛЬТУР
Creators: name: ПОЛЯКОВ Д.Г.
Publisher: name: Земледелие
Year: 2021
Subjects: НУЛЕВАЯ ОБРАБОТКА
ВСПАШКА
ОБЪЕМНАЯ ПЛОТНОСТЬ
РАВНОВЕСНАЯ ПЛОТНОСТЬ
СТРУКТУРНО-АГРЕГАТНЫЙ СОСТАВ
УРОЖАЙНОСТЬ
NO-TILL
PLOUGHING
BULK DENSITY
EQUILIBRIUM DENSITY
AGGREGATE COMPOSITION
CROP YIELD

description: Рост площадей под прямым посевом -мировая тенденция в земледелии. Существуют опасения, что отказ от обработки приведет к чрезмерному уплотнению и физической деградации черноземов. Цель работы - установление тенденций изменения агрофизического состояния и продуктивности черноземов при отказе от основной обработки по опубликованным результатам полевых опытов, проведенных на территории Российской Федерации. В анализ включены публикации с сопряженным исследованием технологий глубокой обработки почвы (вспашки или глубокого рыхления) и прямого посева продолжительностью более 2лет. Наиболее часто обсуждается изменение объемной плотности почвы и запасов продуктивной влаги, гораздо меньше - структуры почвы. Как правило, отказ от основной обработки сопровождается уплотнением пахотного слоя почвы. Плотность черноземов выщелоченных с содержанием гумуса более 6 % при основной обработке и прямом посеве составляла 0,89.1,14 г/см3 и 0,96... 1,15 г/см3, выщелоченных малогумусных - 1,00.1,36 г/см3 и 1,07...,39 г/см3, обыкновенных - 0,96.1,21 г/см3 и 1,02. 1,26 г/см3, южных - 1,06.1,22 г/см3 и 1,13.1,27 г/см3 соответственно. Разница в плотности черноземов при прямом посеве и обработке почвы изменяется с продолжительностью опыта. На начальном этапе внедрения прямого посева отмечается резкое уплотнение почвы, по сравнению с обработанными вариантами. Длительное применение способствует сужению разницы, с тенденцией к разрыхлению. Структурно-агрегатный состав черноземов при прямом посеве чаще улучшается, отрицательные примеры описаны только на третий год использования технологии. Запасы продуктивной влаги весной увеличивались в 61 % случаев, в 31 % уменьшались и в 8 % случаев эффект отсутствовал. При этом урожайность культур при прямом посеве снижалась в 73 % опытов, в 24 % повышалась. К 6...7-му году разница в урожайности постепенно сокращалась.
Time for Change in U.S. Farm Policy: Fundamental Reform Emphasizing Institutions Based on Agriculture's 'Multifunctionality'?
Creators: name: Dobbs, Thomas L.
name: Dobbs, Thomas L.
Publisher: name: Unknown
Year: 2007
Subjects: subject: Agricultural and Food Policy
subject: Farm policy
subject: multifunctionality
subject: Conservation Security Program
subject: European Union
subject: Common Agricultural Policy
subject: World Trade Organization
subject: agri-environmental programs
subject: U.S. farm bill

description: In this article, the author first traces the evolution of political economy perspectives since U.S. farm policy as we know it today was first established in the 1930s. He then discusses the preconditions for a change in the settled beliefs of citizens and policy makers about what U.S. farm policy should look like in the future. The article contains the author’s suggestions for farm policy reform based on a “sustainable agriculture vision” that is also compatible with a multifunctionality view of agriculture. Multifunctionality has been the basis of recent reforms of the European Union’s Common Agricultural Policy.
Lifetime Measurement of the 6s Level of Rubidium
Creators: name: Gomez, E.
name: Baumer, F.
name: Lange, A. D.
name: Sprouse, G. D.
name: Orozco, L. A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We present a lifetime measurements of the 6s level of rubidium. We use a time-correlated single-photon counting technique on two different samples of rubidium atoms. A vapor cell with variable rubidium density and a sample of atoms confined and cooled in a magneto-optical trap. The 5P_{1/2} level serves as the resonant intermediate step for the two step excitation to the 6s level. We detect the decay of the 6s level through the cascade fluorescence of the 5P_{3/2} level at 780 nm. The two samples have different systematic effects, but we obtain consistent results that averaged give a lifetime of 45.57 +- 0.17 ns.
description: 10 pages, 9 figures
Weighing Milky Way Satellites with LISA
Creators: name: Korol, Valeriya
name: Belokurov, Vasily
name: Moore, Christopher J.
name: Toonen, Silvia
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: White dwarf stars are a well-established tool for studying Galactic stellar populations. Two white dwarfs in a tight binary system offer us an additional messenger - gravitational waves - for exploring the Milky Way and its immediate surroundings. Gravitational waves produced by double white dwarf (DWD) binaries can be detected by the future Laser Interferometer Space Antenna (LISA). Numerous and widespread DWDs have the potential to probe shapes, masses and formation histories of the stellar populations in the Galactic neighbourhood. In this work we outline a method for estimating the total stellar mass of Milky Way satellite galaxies based on the number of DWDs detected by LISA. To constrain the mass we perform a Bayesian inference using binary population synthesis models and considering the number of detected DWDs associated with the satellite and the measured distance to the satellite as the only inputs. Using a fiducial binary population synthesis model we find that for large satellites the stellar masses can be recovered to within 1) a factor two if the star formation history is known and 2) an order of magnitude when marginalising over different star formation history models. For smaller satellites we can place upper limits on their stellar mass. Gravitational wave observations can provide mass measurements for large satellites that are comparable, and in some cases more precise, than standard electromagnetic observations.
description: published in MNRAS Letters
Optical conductivity of a granular metal at not very low temperatures
Creators: name: Tripathi, V.
name: Loh, Y. L.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the finite-temperature optical conductivity, sigma(omega,T), of a granular metal using a simple model consisting of a array of spherical metallic grains. It is necessary to include quantum tunneling and Coulomb blockade effects to obtain the correct temperature dependence of sigma(omega, T), and to consider polarization oscillations to obtain the correct frequency dependence. We have therefore generalized the Ambegaokar-Eckern-Schoen (AES) model for granular metals to obtain an effective field theory incorporating the polarization fluctuations of the individual metallic grains. In contrast to the DC conductivity, which is determined by inter-grain charge transfer and obeys an Arrhenius law at low temperature, the AC conductivity is dominated by a resonance peak for intra-grain polarization oscillations, which has a power-law tail at low frequencies. More importantly, although the resonance frequency agrees with the classical prediction, the resonance width depends on intergrain quantum tunneling and Coulomb blockade parameters, in addition to the classical Drude relaxation within the grain. This additional damping is due to inelastic cotunneling of polarization fluctuations to neighbouring grains and it qualitatively differs from the DC conductivity in its temperature dependence quite unlike the expectation from Drude theory.
description: Added figures, published version, 16 pages, REVTeX
ЭФФЕКТИВНОСТЬ ПРИЕМОВ ОСНОВНОЙ ОБРАБОТКИ ПОЧВЫ ПОД ЯРОВОЙ ЯЧМЕНЬ НА ЧЕРНОЗЕМАХ КУРСКОЙ ОБЛАСТИ
Creators: name: ИЛЬИН Б. С.
name: ШУМАКОВ А. В.
name: ДУБОВИК Е. В.
name: ДУБОВИК Д.В.
Publisher: name: Земледелие
Year: 2021
Subjects: ЯРОВОЙ ЯЧМЕНЬ (HORDEUM VULGARE L.)
ВСПАШКА
КОМБИНИРОВАННАЯ
ПОВЕРХНОСТНАЯ ОБРАБОТКА
ПРЯМОЙ ПОСЕВ
SPRING BARLEY (HORDEUM VULGARE L.)
PLOUGHING
COMBINED CULTIVATION
SURFACE TILLAGE
DIRECT SOWING

description: На черноземе типичном Курской области в 2018-2020 гг. проводили исследования с целью оценкиуровня влиянияразличныхприемов основной обработки почвы на агрофизические и биологические свойства почвы, урожайность и качество ярового ячменя сорта Суздалец. Схема опыта предусматривала изучение следующих приемов: вспашка на 20.22 см; комбинированная обработка (дискование + чизелевание на 20. 22 см); поверхностная обработка (дискование до 8 см); прямой посев (No-till). Во всех вариантах, кроме прямого посева, зафиксировано увеличение плотности почвы за период вегетации ярового ячменя в слое 0.20 см на 0,02. 0,05 г/см3. При прямом посеве отмечено стабильное состояние плотности почвы на уровне 1,08.1,11 г/см3. Уменьшение глубины основной обработки почвы приводило к формированию агрегатов более крупного размера, способствовало увеличению средневзвешенного диаметра воздушно-сухих агрегатов в следующем ряду: вспашка (4,38 мм) - комбинированная обработка (4,42 мм) - поверхностная обработка (4,52мм) - прямой посев (4,90 мм). Минимизации основной обработки почвы приводили к увеличению биологической активности почвы в слое 0.10 см до максимума при прямом посеве (21,7 %). В нижнем слое (10.20 см) самую высокую биологическую активность наблюдали при вспашке (26,3 %), при остальных приемах обработки почвы она находилась практически на одном уровне (15,7.16,2 %). Наибольшую урожайность отмечали при посеве по вспашке (2,22 т/га). Минимизация обработки почвы приводила к уменьшению величины этого показателя на 19,9 % при комбинированной обработке, на 34,7 % при поверхностной обработке и на 29,7 % при прямом посеве. Самое высокое содержание белка в зерне ячменя наблюдали при прямом посеве. Оно было больше, чем по вспашке, на 1,0 %, по сравнению с комбинированной обработкой - на 0,6 %, с поверхностной - на 1,3 %.
Dynamically Tagged Groups of Very Metal-poor Halo Stars from the HK and Hamburg/ESO Surveys
Creators: name: Limberg, Guilherme
name: Rossi, Silvia
name: Beers, Timothy C.
name: Perottoni, Hélio D.
name: Pérez-Villegas, Angeles
name: Santucci, Rafael M.
name: Abuchaim, Yuri
name: Placco, Vinicius M.
name: Lee, Young Sun
name: Christlieb, Norbert
name: Norris, John E.
name: Bessell, Michael S.
name: Ryan, Sean G.
name: Wilhelm, Ronald
name: Rhee, Jaehyon
name: Frebel, Anna
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We analyze the dynamical properties of $\sim$1500 very metal-poor (VMP; [Fe/H] $\lesssim -2.0$) halo stars, based primarily on medium-resolution spectroscopic data from the HK and Hamburg/ESO surveys. These data, collected over the past thirty years, are supplemented by a number of calibration stars and other small samples, along with astrometric information from $Gaia$ DR2. We apply a clustering algorithm to the 4-D energy-action space of the sample, and identify a set of 38 Dynamically Tagged Groups (DTGs), containing between 5 and 30 member stars. Many of these DTGs can be associated with previously known prominent substructures such as $Gaia$-Sausage/Enceladus (GSE), Sequoia, the Helmi Stream (HStr), and Thamnos. Others are associated with previously identified smaller dynamical groups of stars and streams. We identify 10 new DTGs as well, many of which have strongly retrograde orbits. We also investigate possible connections between our DTGs and $\sim$300 individual $r$-process-enhanced (RPE) stars from a recent literature compilation. We find that several of these objects have similar dynamical properties to GSE (5), the HStr (4), Sequoia (1), and Rg5 (1), indicating that their progenitors might have been important sources of RPE stars in the Galaxy. Additionally, a number of our newly identified DTGs are shown to be associated with at least two RPE stars each (DTG-2: 3, DTG-7: 2; DTG-27: 2). Taken as a whole, these results are consistent with ultra-faint and/or dwarf spheroidal galaxies as birth environments in which $r$-process nucleosynthesis took place, and then were disrupted by the Milky Way.
description: Accepted for ApJ. Tables 5 and 6 available in the online journal. Minor typos fixed and references updated to match published version
Decays of tensor mesons and the tensor glueball in an effective field approach
Creators: name: Giacosa, F.
name: Gutsche, Th.
name: Lyubovitskij, V. E.
name: Faessler, Amand
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The strong and electromagnetic decays of the ground-state tensor mesons are studied in an effective field approach. A fit to the well-known experimental data is performed. The decay ratios of the tensor glueball are evaluated and possible candidates are discussed.
description: 12 pages
Competing Visions of U.S. Agriculture: Can We Have Our Cake and Eat It Too in Reforming Federal Farm Policy
Creators: name: Dobbs, Thomas L.
name: Dobbs, Thomas L.
Publisher: name: Unknown
Year: 2007
Subjects: subject: Agricultural and Food Policy
subject: Farm policy
subject: conservation
subject: agri-environmental programs
subject: U.S. farm bill
subject: sustainable agriculture
subject: multifunctionality

description: Two alternative visions for U.S. agriculture are described—“the global competitiveness vision” and the “sustainable agriculture vision”—together with farm policy reform proposals associated with each vision. The USDA’s proposed policy reforms (released in January 2007) also are briefly explained and compared to those of groups associated with the global competitiveness and sustainable agriculture visions. The author closes the article with a discussion of the compatibility of different reform proposals and the challenges of passing legislation containing major policy reform.
A large-scale transcriptome-wide association study (TWAS) of 10 blood cell phenotypes reveals complexities of TWAS fine-mapping
Creators: name: Graff, M.
name: Morrison, A.C.
name: Rowland, B.T.
name: Reiner, A.P.
name: Li, Y.
name: Kooperberg, C.
name: Couper, D.J.
name: Tapia, A.L.
name: Yu, B.
name: Preuss, M.
name: Jorgenson, E.
name: Raffield, L.M.
name: Rosen, J.D.
name: Loos, R.J.F.
name: Young, K.
name: Choquet, H.
name: Buyske, S.
name: North, K.E.
name: Bien, S.A.
Publisher: name: John Wiley and Sons Inc
Year: 2022

description: Hematological measures are important intermediate clinical phenotypes for many acute and chronic diseases and are highly heritable. Although genome-wide association studies (GWAS) have identified thousands of loci containing trait-associated variants, the causal genes underlying these associations are often uncertain. To better understand the underlying genetic regulatory mechanisms, we performed a transcriptome-wide association study (TWAS) to systematically investigate the association between genetically predicted gene expression and hematological measures in 54,542 Europeans from the Genetic Epidemiology Research on Aging cohort. We found 239 significant gene-trait associations with hematological measures; we replicated 71 associations at p < 0.05 in a TWAS meta-analysis consisting of up to 35,900 Europeans from the Women's Health Initiative, Atherosclerosis Risk in Communities Study, and BioMe Biobank. Additionally, we attempted to refine this list of candidate genes by performing conditional analyses, adjusting for individual variants previously associated with hematological measures, and performed further fine-mapping of TWAS loci. To facilitate interpretation of our findings, we designed an R Shiny application to interactively visualize our TWAS results by integrating them with additional genetic data sources (GWAS, TWAS from multiple reference panels, conditional analyses, known GWAS variants, etc.). Our results and application highlight frequently overlooked TWAS challenges and illustrate the complexity of TWAS fine-mapping.
Magnetospheric Eclipses in the Binary Pulsar J0737-3039
Creators: name: Lyutikov, Maxim
name: Thompson, Christopher
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: (Abridged) In the binary radio pulsar system J0737-3039, the faster pulsar A is eclipsed once per orbit. We construct a simple geometric model which successfully reproduces the eclipse light curves, based on the idea that the radio pulses are attenuated by synchrotron absorption on the closed magnetic field lines of pulsar B. The model explains most of the properties of the eclipse: its asymmetric form, the nearly frequency-independent duration, and the modulation of the brightness of pulsar A at both once and twice the rotation frequency of pulsar B in different parts of the eclipse. This detailed agreement confirms the dipolar structure of the star's poloidal magnetic field. The model makes clear predictions for the degree of linear polarization of the transmitted radiation. The weak frequency dependence of the eclipse duration implies that the absorbing plasma is relativistic, with a density much larger than the corotation charge density. Such hot, dense plasma can be effectively stored in the outer magnetosphere, where cyclotron cooling is slow. The gradual loss of particles inward through the cooling radius is compensated by an upward flux driven by a fluctuating component of the current, and by the pumping of magnetic helicity on the closed field lines. The trapped particles are heated to relativistic energies by the damping of magnetospheric turbulence and, at a slower rate, by the absorption of the radio emission of the companion pulsar.
description: 45 pages, 13 figures, submitted to ApJ; minor typo corrected
Probing the dipole of the diffuse gamma-ray background
Creators: name: Kashlinsky, A.
name: Atrio-Barandela, F.
name: Shrader, C. S.
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We measured the dipole of the diffuse $γ$-ray background (DGB) identifying a highly significant time-independent signal coincidental with that of the Pierre Auger UHECR. The DGB dipole is determined from flux maps in narrow energy bands constructed from 13 years of observations by the Large Area Telescope (LAT) of the {\it Fermi} satellite. The $γ$-ray maps were clipped iteratively of sources and foregrounds similar to that done for the cosmic infrared background. The clipped narrow energy band maps were then assembled into one broad energy map out to the given energy starting at $E=2.74$ Gev, where the LAT beam falls below the sky's pixel resolution. Next we consider cuts in Galactic latitude and longitude to probe residual foreground contaminations from the Galactic Plane and Center. In the broad energy range $2.74 < E\leq115.5$ GeV the measured dipoles are stable with respect to the various Galactic cuts, consistent with an extragalactic origin. The $γ$-ray sky's dipole/monopole ratio is much greater than that expected from the DGB clustering component and the Compton-Getting effect origin with reasonable velocities. At $\simeq (6.5-7)\%$ it is similar to the Pierre Auger UHECRs with $E_{\rm UHECR}\ge 8$ EeV pointing to a common origin of the two dipoles. However, the DGB flux associated with the found DGB dipole reaches parity with that of the UHECR around $E_{\rm UHECR}\le 1$ EeV, perhaps arguing for a non-cascading mechanism if the DGB dipole were to come from the higher energy UHECRs. The signal/noise of the DGB dipole is largest in the $5-30$ GeV range, possibly suggesting the $γ$-photons at these energies are the ones related to cosmic rays.
description: ApJ Letters, to appear
FAPRI 2006 U.S. and World Agricultural Outlook
Creators: name: Beghin, John C.
name: Dong, Fengxia
name: Elobeid, Amani E.
name: Fabiosa, Jacinto F.
name: Fuller, Frank H.
name: Hart, Chad E.
name: Kovarik, Karen
name: Tokgoz, Simla
name: Yu, Tun-Hsiang (Edward)
name: Wailes, Eric J.
name: Chavez, Eddie C.
name: Womack, Abner W.
name: Meyers, William H.
name: Binfield, Julian C.R.
name: Brown, D. Scott
name: Kruse, John R.
name: Madison, Daniel
name: Meyer, Seth D.
name: Westhoff, Patrick C.
name: Wilcox, Lori
name: Beghin, John C.
name: Dong, Fengxia
name: Elobeid, Amani E.
name: Fabiosa, Jacinto F.
name: Fuller, Frank H.
name: Hart, Chad E.
name: Kovarik, Karen
name: Tokgoz, Simla
name: Yu, Tun-Hsiang (Edward)
name: Wailes, Eric J.
name: Chavez, Eddie C.
name: Womack, Abner W.
name: Meyers, William H.
name: Binfield, Julian C.R.
name: Brown, D. Scott
name: Kruse, John R.
name: Madison, Daniel
name: Meyer, Seth D.
name: Westhoff, Patrick C.
name: Wilcox, Lori
Publisher: name: Unknown
Year: 2006
Subjects: Crop Production/Industries
International Relations/Trade
Livestock Production/Industries

description: The FAPRI 2006 U.S. and World Agricultural Outlook presents projections of world agricultural production, consumption, and trade under average weather patterns, existing farm policy, and policy commitments under current trade agreements and custom unions. Despite continued high energy prices, world economic growth is expected to remain strong in the coming decade, above 3% per annum. Other major drivers of the 2006 baseline include new bio-energy policies in several large countries, EU sugar policy reform, sanitary and phytosanitary (SPS) shocks in livestock and poultry markets, and movements in the exchange rate.
Displaced Vertex signatures of a pseudo-Goldstone sterile neutrino
Creators: name: Lavignac, Stéphane
name: Medina, Anibal D.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Low-scale models of neutrino mass generation often feature sterile neutrinos with masses in the GeV-TeV range, which can be produced at colliders through their mixing with the Standard Model neutrinos. We consider an alternative scenario in which the sterile neutrino is produced in the decay of a heavier particle, such that its production cross section does not depend on the active-sterile neutrino mixing angles. The mixing angles can be accessed through the decays of the sterile neutrino, provided that they lead to observable displaced vertices. We present an explicit realization of this scenario in which the sterile neutrino is the supersymmetric partner of a pseudo-Nambu-Goldstone boson, and is produced in the decays of higgsino-like neutralinos and charginos. The model predicts the active-sterile neutrino mixing angles in terms of a small number of parameters. We show that a sterile neutrino with a mass between a few 10 GeV and 200 GeV can lead to observable displaced vertices at the LHC, and outline a strategy for reconstructing experimentally its mixing angles.
description: 29 pages, 3 figures. Version as published in JHEP
Opportunities to upgrade the scientific disciplines space
Creators: name: Gandelman, Nestor
name: Parcero, Osiris Jorge
name: Roldan, Flavia
Publisher: name: arXiv
Year: 2024
Subjects: subject: General Economics (econ.GN)
subject: FOS: Economics and business

description: Knowledge generated in a given scientific domain may spill over into other close scientific disciplines, thereby improving performance. Using bibliometric data from the SCImago database drawn from a sample of 174 countries, we implement a measure of proximity based on revealed comparative advantage (RCA). Our estimates show that proximity between disciplines positively and significantly affects the RCA growth rate. This impact is larger on disciplines that currently do not have RCA.
description: Pages 32, 11 tables, 3 figure
Implications of EU Enlargement for the New Member States' Agri-food Trade
Creators: name: Bartosova, Dasa
name: Bartova, Lubica
name: Fidrmuc, Jarko
name: Bartosova, Dasa
name: Bartova, Lubica
name: Fidrmuc, Jarko
Publisher: name: Unknown
Year: 2007
Subjects: subject: Labor and Human Capital
subject: agri-food trade
subject: EU enlargement
subject: dynamic panel data models

description: We estimated dynamic panel models for the agri-food trade of six new Member States (the Czech Republic, Latvia, Lithuania, Romania, Slovakia and Slovenia) with selected countries and trade groupings between 1996 and 2005. In general, we found low income elasticities and high price elasticities of import demand for agricultural commodities. The lagged values for trade are highly significant. We also show that accession to the EU increased the new Member States' exports, but had less impact on their imports. The new Member States have gained significantly from liberalised access to the EU agri-food markets.
Identifying high-risk claims within the Workers' Compensation Board of British Columbia's claim inventory by using logistic regression modeling
Creators: name: Urbanovich, Ernest
Publisher: name: University of British Columbia
Year: 2009

description: The goal of the project was to use the data in the Workers' Compensation Board (WCB) of British Columbia's data warehouse to develop a statistical model that could predict on an ongoing basis those short-term disability (STD) claims that posed a potential high financial risk to the WCB. We were especially interested in identifying factors that could be used to model the transition process of claims from the STD stratum to the vocational rehabilitation (VR) and long term disability (LTD) strata, and forecast their financial impact on the WCB. The reason for this focus is that claims experiencing these transitions represent a much higher financial risk to the WCB than claims that only progress to the health care (HC) and/or the short term disability (STD) strata. The sample used to investigate the conversion processes of claims consists of all STD claims (323,098) that had injury dates between January 1, 1989 and December 31, 1992. Although high-risk claims represent only 4.2 % of all STD claims, they have received 64.3% ($1.2 billion) of the total payments and awards ($1.8 billion) made to July 1999. Low-risk claims make up 95.8% of all the claims but only receive 35.7% ($651 million) of the payments and awards. Moreover, the average cost of high-risk claims ($86,200) is 41 times higher than the average cost of low-risk claims ($2,100). The main objective of the project was to build a reliable statistical model to identify high-risk claims that can be readily implemented at the WCB and thereby improve business decisions. To identify high-risk claims early on, we used logistic regression modeling. Since ten of the most frequently observed injury types make up 95.72% of all the claims, separate logistic regression models were built for each of them. Besides injury type, we also identified STD days paid and age of claimant as statistically significant predictors. The logistic regression models can be used to identify high-risk claims prior to or at the First Final STD payment date provided we know the injury type, STD days paid and age of claimant. The investigation showed that the more STD days paid and the older the injured worker, the higher the probability of the claim being high-risk.
Timing and spectral properties of the accreting millisecond pulsar SWIFT J1756.9-2508
Creators: name: Linares, Manuel
name: Wijnands, Rudy
name: van der Klis, Michiel
name: Krimm, Hans
name: Markwardt, Craig
name: Chakrabarty, Deepto
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: SWIFT J1756.9-2508 is one of the few accreting millisecond pulsars (AMPs) discovered to date. We report here the results of our analysis of its aperiodic X-ray variability, as measured with the Rossi X-ray Timing Explorer during the 2007 outburst of the source. We detect strong (~35%) flat-topped broadband noise throughout the outburst with low characteristic frequencies (~0.1 Hz). This makes SWIFT J1756.9-2508 similar to the rest of AMPs and to other low luminosity accreting neutron stars when they are in their hard states, and enables us to classify this AMP as an atoll source in the extreme island state. We also find a hard tail in its energy spectrum extending up to 100 keV, fully consistent with such source and state classification.
description: Accepted for publication in The Astrophysical Journal. Scheduled for the ApJ May 10, 2008, v678n 2 issue. 6 pages, 5 figures. Uses \emulateapj
Ross McLaren, Retired President and CEO, Shaw's Supermarket, Inc. - The Changing Consumer: Demanding but Predictable
Creators: name: Mashinini, Nkosazana N.
name: Mashinini, Nkosazana N.
Publisher: name: Unknown
Year: 2006
Subjects: subject: Consumer/Household Economics
subject: Changing consumer
subject: demanding
subject: predictable

description: The food retail business has undergone radical changes in the 21st century because of changing consumer demand in the market. The changes in consumption patterns are largely influenced by higher income and the expenditure on food as a percentage of disposable income, demographic changes, urbanization, improved transportation, trade relations, and consumers' concerns with regards to product quality and food safety. There have been observed differences in the way consumers in developed and developing countries react to income changes. For developing countries, higher income levels foster an increase in the demand for meat products which is why livestock sales have generally improved in developing countries. In more mature markets, consumers are allocating income to high value processed foodstuffs, a wider range of products to choose from, indulgence and better product quality. The demand for organic food products has increased, associated with consumers' beliefs that consuming organic products is the only way they can protect themselves from consuming toxic substances contained in pesticides and veterinary drugs. In addition, consumers require product labeling and product traceability on produce, as quality assurance instruments, to further protect themselves from food safety risks. Affluence in developed countries is giving consumers' the confidence to demand anything from the market as long as they will be paying for their demands. It is therefore important for food retailers to be able to anticipate and respond to the changes in consumer demands.
Transcriptome-wide association study in UK Biobank Europeans identifies associations with blood cell traits
Creators: name: Wen, J.
name: Huffman, J.E.
name: Venkatesh, S.
name: Reiner, A.P.
name: Graff, M.
name: Roussos, P.
name: Li, Y.
name: Vuckovic, D.
name: Sun, Q.
name: Rowland, B.
name: Tapia, A.L.
name: Voloudakis, G.
name: Raffield, L.M.
name: Rosen, J.D.
name: Sankaran, V.G.
name: Soranzo, N.
name: Lettre, G.
name: Tardaguila, M.
Publisher: name: Oxford University Press
Year: 2022

description: Previous genome-wide association studies (GWAS) of hematological traits have identified over 10 000 distinct trait-specific risk loci. However, at these loci, the underlying causal mechanisms remain incompletely characterized. To elucidate novel biology and better understand causal mechanisms at known loci, we performed a transcriptome-wide association study (TWAS) of 29 hematological traits in 399 835 UK Biobank (UKB) participants of European ancestry using gene expression prediction models trained from whole blood RNA-seq data in 922 individuals. We discovered 557 gene-trait associations for hematological traits distinct from previously reported GWAS variants in European populations. Among the 557 associations, 301 were available for replication in a cohort of 141 286 participants of European ancestry from the Million Veteran Program. Of these 301 associations, 108 replicated at a strict Bonferroni adjusted threshold ($\alpha$= 0.05/301). Using our TWAS results, we systematically assigned 4261 out of 16 900 previously identified hematological trait GWAS variants to putative target genes. Compared to coloc, our TWAS results show reduced specificity and increased sensitivity in external datasets to assign variants to target genes.
Ada Gabucci, Attraverso le Alpi e lungo il Po. Importazione e distribuzione di sigillate galliche nella Cisalpina
Creators: name: Flügel, Christof
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2021

description: Rezension zu: Ada Gabucci, Attraverso le Alpi e lungo il Po. Importazione e distribuzione di sigillate galliche nella Cisalpina. Con un contributo di Paola Bordigone. Collection de l’École française de Rome 532. Publications de l’École française de Rome, Rom 2018. ISBN 978-2-7283-1254-2 (gedruckte Ausgabe). ISBN 978-2-7283-1255-9 (Open Access [01.06.2017]). doi: https://doi.org/10.4000/books.efr.3241. xvii + 390 Seiten mit 101 Abbildungen in Schwarz-Weiß
description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 98 2020(2021)
Wigner's friend and the quasi-ideal clock
Creators: name: Rossi, Vinicius P.
name: Soares-Pinto, Diogo O.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In 1962, Eugene P. Wigner introduced a thought experiment that highlighted the incompatibility in quantum theory between unitary evolution and wave function reduction in a measurement. This work resulted in a class of thought experiments often called Wigner's Friend Scenarios, which have been providing insights over many frameworks and interpretations of quantum theory. Recently, a no-go theorem obtained by Daniela Frauchiger and Renato Renner brought attention back to the Wigner's Friend and its potential of putting theories to test. Many answers to this result pointed out how timing in the thought experiment could be yielding a paradox. In this work, we ask what would happen if the isolated friend in a Wigner's Friend Scenario did not share a time reference frame with the outer observer, and time should be tracked by a quantum clock. For this purpose, we recollect concepts provided by the theory of quantum reference frames and the quantum resource theory of asymmetry, to learn how to internalize time in this scenario, and introduce a model for a feasible quantum clock proposed by Mischa P. Woods, Ralph Silva and Jonathan Oppenheim, called the quasi-ideal clock. Our results have shown that no decoherent behavior comes from this approach, and the disagreement between the superobserver and its friend persists even for an imprecise clock on Wigner's side. However, the gaussian spread of this clock model can control what observables do not raise a paradox, indicating the relevance of deepening this analysis.
description: Comments are welcome
Conceptual Links between Two Mad Cow Crises: The Absence of Paradigmatic Change and Policymaking Implications
Creators: name: Labrecque, Joanne
name: Charlebois, Sylvain
name: Labrecque, Joanne
name: Charlebois, Sylvain
Publisher: name: Unknown
Year: 2006
Subjects: subject: Agricultural and Food Policy
subject: Livestock Production/Industries
subject: BSE
subject: food safety policies
subject: food marketing
subject: food distribution
subject: crisis management

description: On March 20, 1996, a day known as Black Wednesday to the British beef industry, the British Secretary of State of Health announced that a possible link existed between BSE and the Creutzfeldt-Jakob disease (vCJD), the human variant of mad cow. Seven years later, a somewhat comparable fate struck the Canadian beef industry. In May 2003, the discovery of the first native North American case of BSE in Canada deflated the prospects of the industry across the country, consequently creating environmental uncertainty. This paper conceptually analyses the events that occurred in Britain by considering the beef industry as a political economy. The authors find that socio-political structures, driven by power and dependency relations, socio-political processes, and driven by cooperation and conflicts within a marketing channel greatly influenced channel members' behaviors during this crisis. In addition, even though some changes were made, the authors believe that, based on the conceptual analysis of the first year following this critical event, Canadian beef industry leaders and government alike did not learn sufficiently from the unfortunate events that occurred in Britain in 1996, even if some stakeholders believed that they had.
Multilayer Network Science: from Cells to Societies
Creators: name: Artime, Oriol
name: Benigni, Barbara
name: Bertagnolli, Giulia
name: d'Andrea, Valeria
name: Gallotti, Riccardo
name: Ghavasieh, Arsham
name: Raimondo, Sebastian
name: De Domenico, Manlio
Publisher: name: arXiv
Year: 2024
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Networks are convenient mathematical models to represent the structure of complex systems, from cells to societies. In the past decade, multilayer network science -- the branch of the field dealing with units interacting in multiple distinct ways, simultaneously -- was demonstrated to be an effective modeling and analytical framework for a wide spectrum of empirical systems, from biopolymer networks (such as interactome and metabolomes) to neuronal networks (such as connectomes), from social networks to urban and transportation networks. In this Element, a decade after the publication of one of the most seminal papers on this topic, we review the most salient features of multilayer network science, covering both theoretical aspects and direct applications to real-world coupled/interdependent systems, from the point of view of multilayer structure, dynamics, and function. We discuss potential frontiers for this topic and the corresponding challenges in the field for the future.
description: Published in Cambridge Elements. Cambridge University Press; 2022
Robert T. Martin, Managing Director and Regional Executive, Bank of Montreal, BMO Financial Group: Doing Business in China
Creators: name: Liu, Juan
name: Liu, Juan
Publisher: name: Unknown
Year: 2006
Subjects: subject: Financial Economics
subject: China
subject: bank executive interview
subject: financial markets
subject: business.

description: This interview concerns doing business in China given the rapid changes and industrial development of that country. This report is based on an interview with Robert T. Martin, Managing Director & Regional Executive of BMO Bank of Montreal in June, 2005. Recent federal government financial reform efforts in China have facilitated foreign banks' business development as part of the Chinese WTO market-opening commitment. Foreign banks' development in the Chinese market is based on client demands and product expertise. The banks are concerned about increasing competition, the ability to be sustainable long-term, and innovation through new products introduction in niche markets that are regulatory compliant. For new investors in China, potential opportunities continually occur, but reasonable expectations can only be made with regular visits to China and continuous intelligence gathering to keep abreast of the evolving dynamics.
Flux crystals, Majorana metals, and flat bands in exactly solvable spin-orbital liquids
Creators: name: Chulliparambil, Sreejith
name: Janssen, Lukas
name: Vojta, Matthias
name: Tu, Hong-Hao
name: Seifert, Urban F. P.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Spin-orbital liquids are quantum disordered states in systems with entangled spin and orbital degrees of freedom. We study exactly solvable spin-orbital models in two dimensions with selected Heisenberg-, Kitaev-, and $Γ$-type interactions, as well as external magnetic fields. These models realize a variety of spin-orbital-liquid phases featuring dispersing Majorana fermions with Fermi surfaces, nodal Dirac or quadratic band touching points, or full gaps. In particular, we show that Zeeman magnetic fields can stabilize nontrivial flux patterns and induce metamagnetic transitions between states with different topological character. Solvable nearest-neighbor biquadratic spin-orbital perturbations can be tuned to stabilize zero-energy flat bands. We discuss in detail the examples of $\mathrm{SO}(2)$- and $\mathrm{SO}(3)$-symmetric spin-orbital models on the square and honeycomb lattices, and use group-theoretical arguments to generalize to $\mathrm{SO}(ν)$-symmetric models with arbitrary integer $ν> 1$. These results extend the list of exactly solvable models with spin-orbital-liquid ground states and highlight the intriguing general features of such exotic phases. Our models are thus excellent starting points for more realistic modellings of candidate materials.
description: 18 pages, 11 figures; v3 (expanded conclusion and appendix, additional minor changes)
Markolf Brumlich, Frühe Eisenverhüttung bei Glienick. Siedlungs- und wirtschaftsarchäologische Forschungen zur vorrömischen Eisen- und römischen Kaiserzeit in Brandenburg
Creators: name: Rodzińska-Nowak, Judyta
name: Nowak, Marek
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2021

description: Rezension zu: Markolf Brumlich, Frühe Eisenverhüttung bei Glienick. Siedlungs- und wirtschaftsarchäologische Forschungen zur vorrömischen Eisen- und römischen Kaiserzeit in Brandenburg. With contributions by Paul Fischer-Schröter, Susanne Hanik, Pim de Klerk, Bernd Lychatz and Fleur Schweigart. Berliner Archäologische Forschungen 17. Verlag Marie Leidorf GmbH, Rahden / Westf. 2018. ISBN 978-3-89646-527-6. doi: http://dx.doi.org/10.17169/refubium-29531. 977 pages with 542 figures and 46 tables, 191 plates, and 2 attachments (in two volumes)
description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 98 2020(2021)
Miklós Szabó (Hrsg.), assisté de Zoltán Czajlik et Károly Tankó, La nécropole celtique à Sajópetri – Homoki-szőlőskert
Creators: name: Schönfelder, Martin
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2021

description: Rezension zu: Miklós Szabó (Hrsg.), assisté de Zoltán Czajlik et Károly Tankó, La nécropole celtique à Sajópetri – Homoki-szőlőskert. L’Harmattan, Paris 2018. ISBN 978-2-343-16991-0. 438 Seiten mit 335 Abbildungen, 61 Tafeln und 4 Plänen (DIN A3)
description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 98 2020(2021)
Shatter or not: role of temperature and metallicity in the evolution of thermal instability
Creators: name: Das, Hitesh Kishore
name: Choudhury, Prakriti Pal
name: Sharma, Prateek
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We test how metallicity variation (a background gradient and fluctuations) affects the physics of local thermal instability using analytical calculations and idealized, high-resolution 1D hydrodynamic simulations. Although the cooling function ($Λ[T,Z]$) and the cooling time ($t_{\rm cool}$) depend on gas temperature and metallicity, we find that the growth rate of thermal instability is explicitly dependent only on the derivative of the cooling function relative to temperature ($\partial \ln Λ/\partial \ln T$) and not on the metallicity derivative ($\partial \ln Λ/ \partial \ln Z$). For most of $10^4~{\rm K} \lesssim T \lesssim 10^7~{\rm K}$, both the isobaric and isochoric modes (occurring at scales smaller and larger than the sonic length covered in a cooling time [$c_s t_{\rm cool}$], respectively) grow linearly, and at higher temperatures ($\gtrsim 10^7~{\rm K}$) the isochoric modes are stable. We show that even the nonlinear evolution depends on whether the isochoric modes are linearly stable or unstable. For the stable isochoric modes, we observe the growth of small-scale isobaric modes but this is distinct from the nonlinear fragmentation of a dense cooling region. For unstable isochoric perturbations we do not observe large density perturbations at small scales. While very small clouds ($\sim {\rm min}[c_st_{\rm cool}]$) form in the transient state of nonlinear evolution of the stable isochoric thermal instability, most of them merge eventually.
description: 18 pages, 18 figures (including 1 in the appendix), 2 tables. Accepted in MNRAS