cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Features of the formation of spatial separated flows in plane diffuser cascades
Creators: name: V.N. Yershov
name: V.A. Men'shikov
name: Skob, Yurii
name: Ugryumov, Mykhaylo
Publisher: name: figshare
Year: 2020
Subjects: subject: 91501 Computational Fluid Dynamics
subject: FOS: Other engineering and technologies

description: Особенности формирования пространственных отрывных течений в плоских диффузорных решетках
 Features of the formation of spatial separated flows in plane diffuser cascades
Additional file 3 of Effects of mitochondrial dysfunction on bone metabolism and related diseases: a scientometric study from 2003 to 2022
Creators: name: Zhang, Wei
name: Xia, Chang-Liang
name: Ma, Jun-Nan
name: Li, Jia-Xuan
name: Chen, Qi
name: Ou, Shuan-Ji
name: Yang, Yang
name: Qi, Yong
name: Xu, Chang-Peng
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Ecology
subject: Cancer
subject: Science Policy

description: Additional file 3: Supplementarytable 1. The top 10 country and cited country in this field.
The charmed strange meson system
Creators: name: Lucha, Wolfgang
name: Schoberl, F. F.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Motivated by the recent surprising discovery of two new meson states with c s-bar quark content but unexpectedly low masses and narrow total decay widths, we work out, in a nonrelativistic potential-model approach developed already some two decades ago, the predictions for the energy levels of the corresponding charm-antistrange quark bound states. In spite of the fact that this simple quark model reproduces the mass spectrum of the previously observed hadrons remarkably well, we are led to the conclusion that, without considerable modifications, both the new states do not fit into this framework.
description: 11 pages LaTeX
Detecting fuzzy community structures in complex networks with a Potts model
Creators: name: Reichardt, Joerg
name: Bornholdt, Stefan
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: A fast community detection algorithm based on a q-state Potts model is presented. Communities in networks (groups of densely interconnected nodes that are only loosely connected to the rest of the network) are found to coincide with the domains of equal spin value in the minima of a modified Potts spin glass Hamiltonian. Comparing global and local minima of the Hamiltonian allows for the detection of overlapping (``fuzzy'') communities and quantifying the association of nodes to multiple communities as well as the robustness of a community. No prior knowledge of the number of communities has to be assumed.
description: Replacement with conceptual changes, inclusion of benchmarks and large real world applications. 4 pages, 4 figures
Commuting quantum traces: the case of reflection algebras
Creators: name: Avan, Jean
name: Doikou, Anastasia
Publisher: name: arXiv
Year: 2003
Subjects: subject: Quantum Algebra (math.QA)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 81R50; 17B37

description: We formulate a systematic construction of commuting quantum traces for reflection algebras. This is achieved by introducing two sets of generalized reflection equations with associated consistent fusion procedures. Products of their solutions yield commuting quantum traces.
description: 16 pages, Latex
title: Promoting green healthcare initiatives : a systematic literature review, conceptual framework and future research agenda
Creators: name: Sahoo, Manas
name: Kumar, Arvind
name: Thakur, Vikas
Publisher: name: Strathprints - University of Strathclyde
Year: 2025

description: Amid growing global challenges such as climate change, resource scarcity, and rising healthcare demand, healthcare systems increasingly prioritize green and sustainable practices to promote human health and environmental well-being. This study aims to systematically review the current literature on Green Healthcare Initiatives (GHI) in healthcare organizations, identifying research gaps and proposing future directions. Using the SPAR-4 SLR protocol, 85 studies from Scopus and Web of Science databases were analyzed through descriptive and thematic methods alongside the TCCM (Theory, Context, Characteristics, and Methods) framework. It focuses on Green Organizational Capital (leadership, stakeholder involvement, and cultural considerations) as a bridge between implementing GHI and achieving long-term sustainable performance. The analysis emphasizes the critical role of theories like the resource-based view (RBV), Stakeholder theory, and natural-resource-based view (NRBV) in forming GHI. Leadership commitment emerged as a key driver for embedding sustainability as a core organizational value rather than a peripheral initiative. The study emphasizes doable tactics for promoting GHI, like utilizing technology breakthroughs and incorporating sustainability into healthcare culture. This study offers a comprehensive understanding of GHI and its potential to revolutionize healthcare systems, which benefits researchers, policymakers, and stakeholders in the healthcare industry. Additionally, it establishes the foundation for future research to advance sustainable healthcare practices globally.
DeepFakes and Beyond: A Survey of Face Manipulation and Fake Detection
Creators: name: Tolosana, Ruben
name: Vera-Rodriguez, Ruben
name: Fierrez, Julian
name: Morales, Aythami
name: Ortega-Garcia, Javier
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Multimedia (cs.MM)
subject: FOS: Computer and information sciences

description: The free access to large-scale public databases, together with the fast progress of deep learning techniques, in particular Generative Adversarial Networks, have led to the generation of very realistic fake content with its corresponding implications towards society in this era of fake news. This survey provides a thorough review of techniques for manipulating face images including DeepFake methods, and methods to detect such manipulations. In particular, four types of facial manipulation are reviewed: i) entire face synthesis, ii) identity swap (DeepFakes), iii) attribute manipulation, and iv) expression swap. For each manipulation group, we provide details regarding manipulation techniques, existing public databases, and key benchmarks for technology evaluation of fake detection methods, including a summary of results from those evaluations. Among all the aspects discussed in the survey, we pay special attention to the latest generation of DeepFakes, highlighting its improvements and challenges for fake detection. In addition to the survey information, we also discuss open issues and future trends that should be considered to advance in the field.
Dynamics of Innovation in Livestock Genetics in Scotland: An Agricultural Innovation Systems Perspective
Creators: name: Islam, Md. Mofakkarul
name: Renwick, Alan W.
name: Lamprinopoulou-Kranis, Chrysa
name: Klerkx, Laurens
name: Islam, Md. Mofakkarul
name: Renwick, Alan W.
name: Lamprinopoulou-Kranis, Chrysa
name: Klerkx, Laurens
Publisher: name: Unknown
Year: 2012
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Genetic Selection
subject: Sheep
subject: Scotland
subject: EBV
subject: Innovation System

description: The application of genetic selection technologies in livestock breeding offers unique opportunities to enhance the productivity, profitability, and competitiveness of the livestock industry in Scotland. However, there is a concern that the uptake of these technologies has been slower in the sheep and beef sectors in comparison to the dairy, pig and poultry sectors. This is rather paradoxical given the fact that Scotland’s research outputs in farm animal genetics are widely perceived to be excellent. A growing body of literature, popularly known as Innovation Systems theories, suggests that technological transformations require a much broader approach that transcends formal research establishments. Accordingly, this paper reports on preliminary work exploring whether and how an agricultural innovation systems perspective could help identify the dynamics of technology uptake in the livestock sectors in Scotland. Although the work has been undertaken in dairy, sheep, and beef sectors, in this paper, we provide the preliminary results obtained from a case study of the sheep sector only. The key objectives of this work were to map the sheep genetics innovation system in Scotland and identify the barriers prevailing within the system with regard to the uptake of genetic selection technologies. Although the sheep innovation system was characterised by the presence of all key domains and actors, it was found to suffer from some crucial weaknesses relating to network integration, technological infrastructure, and policies and institutional frameworks. The implications of these findings are discussed.
Survey of Recent Innovations in Aromatic Rice
Creators: name: Napasintuwong, Orachos
name: Napasintuwong, Orachos
Publisher: name: Unknown
Year: 2012
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Aromatic Rice
subject: Innovation
subject: Research and Development
subject: Breeding
subject: Geographical Indication
subject: Trade Related Aspects of Intellectual Property Rights

description: This paper provides situations of aromatic rice demand, and international standards. The history and recent developments of traditional and evolved aromatic rice varieties, namely Basmati rice and Jasmine rice, are reviewed. The emerging aromatic rice innovations from developed countries such as the U.S. and other Asian countries generate a threat to these traditional aromatic rice producers such as India, Pakistan, and Thailand. Under WTO Trade Related Aspects of Intellectual Property Rights (TRIPS) Agreement, Geographical Indication (GI) provides a means to protect traditional knowledge and products that are recognized as quality or reputation attributable in the geographical areas, but only if the GI is also protected in the country of origin. India and Pakistan governments still have not registered Basmati rice as GI product though the attemp has been made by NGO, and is still pending. Thailand, on the other hand, already registered GI Thung Kula Ronghai Jasmine rice to specific areas in Northeast Thailand whre the best qualtiy jasmine rice is attributable to the location. Yet, Thung Kula Ronghai Jasmine rice is not protected under GI in other countries. Economic issues realted to GI rice are reviewed and disucssed.
Calculation of ideal gas flow in turbomachine cascades with the jet flow around the outlet edges
Creators: name: Skob, Yurii
name: Ugryumov, Mykhaylo
Publisher: name: figshare
Year: 2020
Subjects: subject: 91501 Computational Fluid Dynamics
subject: FOS: Other engineering and technologies

description: Calculation of ideal gas flow in turbomachine cascades with the jet flow around the outlet edges
Competition between vaccination and disease spreading
Creators: name: Khanjanianpak, Mozhgan
name: Azimi-Tafreshi, Nahid
name: Castellano, Claudio
Publisher: name: arXiv
Year: 2020
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: We study the interaction between epidemic spreading and a vaccination process. We assume that, similar to the disease spreading, also the vaccination process occurs through direct contact, i.e., it follows the standard susceptible-infected-susceptible (SIS) dynamics. The two competing processes are asymmetrically coupled as vaccinated nodes can directly become infected at a reduced rate with respect to susceptible ones. We study analytically the model in the framework of mean-field theory finding a rich phase-diagram. When vaccination provides little protection toward infection, two continuous transitions separate a disease-free immunized state from vaccinated-free epidemic state, with an intermediate mixed state where susceptible, infected and vaccinated individuals coexist. As vaccine efficiency increases, a tricritical point leads to a bistable regime and discontinuous phase transitions emerge. Numerical simulations for homogeneous random networks agree very well with analytical predictions.
description: 12 pages, 7 figures
Incremental ELMVIS for unsupervised learning
Creators: name: Akusok, Anton
name: Eirola, Emil
name: Miche, Yoan
name: Oliver, Ian
name: Björk, Kaj-Mikael
name: Gritsenko, Andrey
name: Baek, Stephen
name: Lendasse, Amaury
Publisher: name: arXiv
Year: 2019
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: An incremental version of the ELMVIS+ method is proposed in this paper. It iteratively selects a few best fitting data samples from a large pool, and adds them to the model. The method keeps high speed of ELMVIS+ while allowing for much larger possible sample pools due to lower memory requirements. The extension is useful for reaching a better local optimum with greedy optimization of ELMVIS, and the data structure can be specified in semi-supervised optimization. The major new application of incremental ELMVIS is not to visualization, but to a general dataset processing. The method is capable of learning dependencies from non-organized unsupervised data -- either reconstructing a shuffled dataset, or learning dependencies in complex high-dimensional space. The results are interesting and promising, although there is space for improvements.
Theory of local heating in nanoscale conductors
Creators: name: Chen, Yu-Chang
name: Zwolak, Michael
name: Di Ventra, Missimiliano
Publisher: name: arXiv
Year: 2003
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report first-principles calculations of local heating in nanoscale junctions formed by a single molecule and a gold point contact. Due to a larger heat dissipation, the single molecule heats up less than the gold point contact. We also find, at zero temperature, a threshold bias $V_{onset}$ of about 6 mV and 11 mV for the molecule and the point contact, respectively, is required to excite the smallest vibrational mode and generate heat. The latter estimate is in very good agreement with recent experimental results on the same system. At a given external bias $V$ below $V_{onset}$, heating becomes noticeable when the background temperature is on the order of $\sim e(V_{onset}-V)/k_{B}$. Above $V_{onset}$, local heating increases dramatically with increasing bias but is also considerably suppressed by thermal dissipation into the electrodes. The results provide a microscopic picture of current-induced heat generation in atomic-scale structures.
description: 4 pages, 4figures
A Stepwise Innovation toward Viable Educational Services in Agriculture: Evidence from Japan
Creators: name: Ohe, Yasuo
name: Ohe, Yasuo
Publisher: name: Unknown
Year: 2012
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: educational tourism
subject: educational function in agriculture
subject: multifunctionality
subject: rural tourism
subject: farm diversification
subject: product innovation
subject: externality

description: Although the educational function in agriculture is attracting growing attention as a kind of multifunctionality in agriculture, these services are not yet provided as a viable farm product. This paper explores how the educational externality could be internalized to establish a viable market for these services. We focused on educational dairy farms in Japan and used a questionnaire survey to quantitatively evaluate the attitudes of operators toward establishing viable services. First, a conceptual framework was presented to express operators’ orientation toward an economically viable service by incorporating a stepwise internalization process of positive externalities with the help of a social learning network. Then, empirically, statistical tests were conducted and factors that determined this orientation, a viable service determinant function, were explored by the ordered logit model. The result showed that, first, the higher the number of visitors to the farm, the more operators were oriented toward a viable service while no connection with ordinary dairy production was shown. Second, social learning was effective for initiating the internalization process. Third, marketing skills became more important for upgrading the internalization level. Consequently, it is important to create opportunities for those farmers who want to provide consumers with educational services to learn a new role for agriculture and to establish a new income source in a stepwise fashion.
Resonant Leptogenesis
Creators: name: Pilaftsis, Apostolos
name: Underwood, Thomas E. J.
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the scenario of thermal leptogenesis in which the leptonic asymmetries are resonantly enhanced through the mixing of nearly degenerate heavy Majorana neutrinos that have mass differences comparable to their decay widths. Field-theoretic issues arising from the proper subtraction of real intermediate states from the lepton-number-violating scattering processes are addressed in connection with an earlier developed resummation approach to unstable particle mixing in decay amplitudes. The pertinent Boltzmann equations are numerically solved after the enhanced heavy-neutrino self-energy effects on scatterings and the dominant gauge-mediated collision terms are included. We show that resonant leptogenesis can be realized with heavy Majorana neutrinos even as light as about 1 TeV, in complete accordance with the current solar and atmospheric neutrino data.
description: 53 pages, LaTeX, 5 eps figures, improved Eq. (A.7) and clarifying comments added
Groundwater storage change detection from in situ and GRACE-based estimates in major river basins across India
Creators: name: Soumendra N. Bhanja
name: Abhijit Mukherjee
name: Rodell, Matthew
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Plant Biology

description: India has been the subject of many recent groundwater studies due to the rapid depletion of groundwater in large parts of the country. However, few if any of these studies have examined groundwater storage conditions in all of India’s river basins individually. Herein we assess groundwater storage changes in all 22 of India’s major river basins using in situ data from 3420 observation locations for the period 2003–2014. One-month and 12-month standardized precipitation index measures (SPI-1 and SPI-12) indicate fluctuations in the long-term pattern. The Ganges and Brahmaputra basins experienced long-term decreasing trends in precipitation in both 1961–2014 and the study period, 2003–2014. Indeterminate or increasing precipitation trends occurred in other basins. Satellite-based and in situ groundwater storage time series exhibited similar patterns, with increases in most of the basins. However, diminishing groundwater storage (at rates of >0.4 km3/year) was revealed in the Ganges-Brahmaputra River Basin based on in situ observations, which is particularly important due to its agricultural productivity.
Effects of biogas production on inter- and in-farm competition
Creators: name: Ostermeyer, Arlette
name: Schonau, Franziska
name: Ostermeyer, Arlette
name: Schonau, Franziska
Publisher: name: Unknown
Year: 2012
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: biogas production
subject: agricultural production
subject: agent-based model AgriPoliS
subject: land rental prices

description: Biogas production is one of the influential innovations of recent decades in German agriculture. Due to high guaranteed energy prices biogas production led to distortions in agricultural and land markets. This paper provides insights in effects of biogas production on farms, farm structures and rural areas for the region Altmark, Germany, for the period 2012-2026 by using the agent-based simulation model AgriPoliS. AgriPoliS enables to simulate agricultural structural change and impacts of policies based on a linear programming approach. To maximize the household-income, farm agents can invest, produce and compete against each other on the land rental market. To analyse effects of biogas production, biogas plants, possible substrate mixtures and feed-in remunerations are introduced in the model. In our analyses, we focus on 1) the choice of production of farms, 2) the competition between farms, and 3) impacts on rural areas including environmental issues and labour market. Our simulation results show that biogas production provides especially for farmers with high management capabilities and large farms a profitable income opportunity. On average, biogas farms cannot increase their profitability. As result of an increased value added through biogas production and high competition among farms, rental prices increase and thus a high share of the value added is transferred to the land owners. Biogas production leads to an intensification of land use, especially to increases in cultivation of grass and maize silage instead of meadows and other crops, and in livestock production. This may cause negative environmental effects. On the other hand both, the intensification and the biogas production have positive effects on the labour market as biogas farms have an additional workforce demand.
Signatures of Velocity-Dependent Dark Matter Self-Interactions in Milky Way-mass Halos
Creators: name: Nadler, Ethan O.
name: Banerjee, Arka
name: Adhikari, Susmita
name: Mao, Yao-Yuan
name: Wechsler, Risa H.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We explore the impact of elastic, anisotropic, velocity-dependent dark matter (DM) self-interactions on the host halo and subhalos of Milky Way (MW)--mass systems. We consider a generic self-interacting dark matter (SIDM) model parameterized by the masses of a light mediator and the DM particle. The ratio of these masses, $w$, sets the velocity scale above which momentum transfer due to DM self-interactions becomes inefficient. We perform high-resolution zoom-in simulations of an MW-mass halo for values of $w$ that span scenarios in which self-interactions either between the host and its subhalos or only within subhalos efficiently transfer momentum, and we study the effects of self-interactions on the host halo and on the abundance, radial distribution, orbital dynamics, and density profiles of subhalos in each case. The abundance and properties of surviving subhalos are consistent with being determined primarily by subhalo--host halo interactions. In particular, subhalos on radial orbits in models with larger values of the cross section at the host halo velocity scale are more susceptible to tidal disruption owing to mass loss from ram pressure stripping caused by self-interactions with the host. This mechanism suppresses the abundance of surviving subhalos relative to collisionless DM simulations, with stronger suppression for larger values of $w$. Thus, probes of subhalo abundance around MW-mass hosts can be used to place upper limits on the self-interaction cross section at velocity scales of $\sim 200\ \rm{km\ s}^{-1}$, and combining these measurements with the orbital properties and internal dynamics of subhalos may break degeneracies among velocity-dependent SIDM models.
description: 19 pages, 10 figures, 1 table. Updated to published version
Contribution of Supports to Modernisation for Enhancing Competitiveness of the Czech Agricultural and Forestry Holdings
Creators: name: Pechrova, Marie
name: Pechrova, Marie
Publisher: name: Unknown
Year: 2012
Subjects: subject: Agribusiness
subject: Agricultural and Food Policy
subject: Rural Development Program
subject: agricultural and forestry holdings
subject: modernisation
subject: competitiveness
subject: innovation

description: Specific weaknesses of the Czech agriculture are “longstanding under-capitalization and credit burden on business, low level of support and market protection in comparison with other European countries prior accession to the EU and low level of financial means in the agricultural sector during the transformation process.” (Ministry of Agriculture, 2010) These factors are limiting the competitiveness of Czech farms. One of the ways how to combat these disadvantages is to invest to the modernisation of the agricultural sector, support innovations and their transmission into practice. Czech Republic can benefit from the European Agricultural Fund for Rural Development (EAFRD) under established Rural Development Programme (RDP). First priority axis of this program is devoted to increasing of competitiveness of agriculture and forestry. Measure I.1.1 Modernisation of agricultural holdings is aimed on investment promoting and improving the overall performance of the farm to increase its competitiveness. Measure I.1.2 Increasing of the economic value of forests has the same objective, but aims on forestry companies. The mid-term evaluation of the RDP evoked the question if the subsidised investments had contributed to the introduction of new products or services and technologies by the enterprises. The aim of this article is to answer the question if the subsidies on modernisation from the EU’s funds have statistically significant impact on the introduction of new technologies or products by agricultural holdings and thus enhancing their competitiveness. On the basis of performed statistical hypothesis testing, the author came to the conclusion that subsidies into modernisation of the agricultural and forestry holdings statistically significantly contributed to the introduction of new technologies and innovations.
Exploring the origin of moving groups and diagonal ridges by simulations of stellar orbits and birthplaces
Creators: name: Barros, Douglas A.
name: Pérez-Villegas, Angeles
name: Lépine, Jacques R. D.
name: Michtchenko, Tatiana A.
name: Vieira, Ronaldo S. S.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The present paper is the culminating one of a series aimed to contribute to the understanding of the kinematic structures of the solar neighbourhood (SN), explaining the origin of the Local Arm and relating the moving groups with the spiral-arms resonances in the disk. With a model for the Galactic potential, with the Sun inside the spiral corotation resonance (CR), we integrate the 2D orbits of test particles distributed in birthplaces along the main spiral arms, the Local Arm, and in the axisymmetric disk. A comparison of the resulting U-V plane of the SN with that provided by Gaia DR2 confirms our previous conclusion that the moving groups of Coma Berenices, Pleiades, and Hyades are associated with the CR, and that the Hercules stream is formed by the bulk of high-order inner Lindblad resonances. The kinematic structures result from stellar orbits trapped by the spiral resonances in a timespan of ~ 1 Gyr, indicating the long-living nature of the spiral structure and challenging recent arguments in favor of short-lived structures originated from incomplete phase mixing in the Galactic disk. As a byproduct, our simulations give some insight into the birthplaces of the stars presently located in the SN; the majority of stars of the main moving groups and the Hercules stream were likely born in the Local Arm, while stars of the Sirius group possibly originated from the outer segment of the Sagittarius-Carina arm. We also propose the spiral resonances as the dynamical origin for the diagonal ridges in the Galactic distribution of rotation velocities.
description: 10 pages, 7 figures. Accepted for publication in ApJ
Stationarity Assumptions and Technical Change in Supply Response Analysis
Creators: name: McClelland, John W.
name: Vroomen, Harry
name: McClelland, John W.
name: Vroomen, Harry
Publisher: name: Unknown
Year: 1988
Subjects: subject: Agricultural and Food Policy
subject: Research and Development/Tech Change/Emerging Technologies
subject: Research Methods/ Statistical Methods
subject: Stationarity
subject: time series
subject: supply response

description: Proper stationarity assumptions (trend stationarity or difference stationarity)are important for modeling agricultural supply response in the context of time series analysis Test reults show that the assumption of trend stationarity should be a tested rather than a maintained hypothesis We discuss implications of model misspeceification in the interpretation of trend line regression coefficients as a proxy for technical change The analysis suggests a more careful consideration of stationarity assumptions when this method is employed in the future
Spanning tree size in Random Binary Search Trees
Creators: name: Panholzer, Alois
name: Prodinger, Helmut
Publisher: name: arXiv
Year: 2004
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 05C05, 60C05 (Primary) 60F05, 68P05 (Secondary)

description: This paper deals with the size of the spanning tree of p randomly chosen nodes in a binary search tree. It is shown via generating functions methods, that for fixed p, the (normalized) spanning tree size converges in law to the Normal distribution. The special case p=2 reproves the recent result (obtained by the contraction method by Mahmoud and Neininger [Ann. Appl. Probab. 13 (2003) 253-276]), that the distribution of distances in random binary search trees has a Gaussian limit law. In the proof we use the fact that the spanning tree size is closely related to the number of passes in Multiple Quickselect. This parameter, in particular, its first two moments, was studied earlier by Panholzer and Prodinger [Random Structures Algorithms 13 (1998) 189-209]. Here we show also that this normalized parameter has for fixed p-order statistics a Gaussian limit law. For p=1 this gives the well-known result that the depth of a randomly selected node in a random binary search tree converges in law to the Normal distribution.
Periodic activity from a fast radio burst source
Creators: name: FRB Collaboration
name: Amiri, M.
name: Andersen, B. C.
name: Bandura, K. M.
name: Bhardwaj, M.
name: Boyle, P. J.
name: Brar, C.
name: Chawla, P.
name: Chen, T.
name: Cliche, J. F.
name: Cubranic, D.
name: Deng, M.
name: Denman, N. T.
name: Dobbs, M.
name: Dong, F. Q.
name: Fandino, M.
name: Fonseca, E.
name: Gaensler, B. M.
name: Giri, U.
name: Good, D. C.
name: Halpern, M.
name: Hessels, J. W. T.
name: Hill, A. S.
name: Höfer, C.
name: Josephy, A.
name: Kania, J. W.
name: Karuppusamy, R.
name: Kaspi, V. M.
name: Keimpema, A.
name: Kirsten, F.
name: Landecker, T. L.
name: Lang, D. A.
name: Leung, C.
name: Li, D. Z.
name: Lin, H. -H.
name: Marcote, B.
name: Masui, K. W.
name: Mckinven, R.
name: Mena-Parra, J.
name: Merryfield, M.
name: Michilli, D.
name: Milutinovic, N.
name: Mirhosseini, A.
name: Naidu, A.
name: Newburgh, L. B.
name: Ng, C.
name: Nimmo, K.
name: Paragi, Z.
name: Patel, C.
name: Pen, U. -L.
name: Pinsonneault-Marotte, T.
name: Pleunis, Z.
name: Rafiei-Ravandi, M.
name: Rahman, M.
name: Ransom, S. M.
name: Renard, A.
name: Sanghavi, P.
name: Scholz, P.
name: Shaw, J. R.
name: Shin, K.
name: Siegel, S. R.
name: Singh, S.
name: Smegal, R. J.
name: Smith, K. M.
name: Stairs, I. H.
name: Tendulkar, S. P.
name: Tretyakov, I.
name: Vanderlinde, K.
name: Wang, H.
name: Wang, X.
name: Wulf, D.
name: Yadav, P.
name: Zwaniga, A. V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Fast radio bursts (FRBs) are bright, millisecond-duration radio transients originating from extragalactic distances. Their origin is unknown. Some FRB sources emit repeat bursts, ruling out cataclysmic origins for those events. Despite searches for periodicity in repeat burst arrival times on time scales from milliseconds to many days, these bursts have hitherto been observed to appear sporadically, and though clustered, without a regular pattern. Here we report the detection of a $16.35\pm0.15$ day periodicity (or possibly a higher-frequency alias of that periodicity) from a repeating FRB 180916.J0158+65 detected by the Canadian Hydrogen Intensity Mapping Experiment Fast Radio Burst Project (CHIME/FRB). In 38 bursts recorded from September 16th, 2018 through February 4th, 2020, we find that all bursts arrive in a 5-day phase window, and 50% of the bursts arrive in a 0.6-day phase window. Our results suggest a mechanism for periodic modulation either of the burst emission itself, or through external amplification or absorption, and disfavour models invoking purely sporadic processes.
The Lipstick Effect and Outdoor Cultural Consumption in Slovakia in Times of Crisis
Creators: name: Tajtakova, Maria
name: Štefan Žák
name: Filo, Peter
Publisher: name: figshare
Year: 2020
Subjects: subject: 150404 Sport and Leisure Management
subject: FOS: Economics and business

description: The paper deals with shifts in outdoor cultural consumption in Slovakia and explores the presence of the so called “Lipstick effect” related to the hedonic consumption in times of economic downturns. Based on the two-stage primary research we analyse the attendance at cultural events (visit to theatre, cinema, concert, opera, ballet, dance, exhibition, vernissage and others) during the pre-crisis and crisis period in view of contrasting perspectives. The results of our research suggest that the outdoor cultural consumption, however being a deferrable need, is not necessarily abandoned in times of economic downturns. On the contrary, it may be sustained or even enhanced during recessionary periods. Our research identified the predominance of psychological aspects over economic factors within arts participation with an increased role of emotional drivers during the recession. Although, the outdoor cultural consumption tends to be sustainable even in times of crisis, the consumption patterns are modified with regard to the intensity of participation and the spending on attended cultural events. Based on our findings we conclude that the outdoor cultural consumption in Slovakia had the Lipstick effect during the global economic crisis.
High performance n-doped carbon nanotube field-effect transistors
Creators: name: Radosavljevic, M.
name: Appenzeller, J.
name: Avouris, Ph.
name: Knoch, J.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We describe a robust technique for the fabrication of high performance vertically scaled n-doped field-effect transistors from large band gap carbon nanotubes. These devices have a tunable threshold voltage in the technologically relevant range (-1.3V < V_th < 0.5V) and can carry up to 5-6 muA of current in the on-state. We achieve such performance by exposure to potassium (K) vapor and device annealing in high vacuum. The treatment has a two-fold effect to: (i) controllably shift V_th toward negative gate biases via bulk doping of the nanotube (up to about 0.6e/nm), and (ii) increase the on-current by 1-2 orders of magnitude. This current enhancement is achieved by lowering external device resistance due to more intimate contact between K metal and doped nanotube channel in addition to potential reduction of the Schottky barrier height at the contact.
description: "The following article has been submitted to Applied Physics Letters. After it is published, it will be found at http://scitation.aip.org/aplo"
Contemporaneous Correlation and Modeling Canada's Imports of U.S. Crops
Creators: name: Babula, Ronald A.
name: Babula, Ronald A.
Publisher: name: Unknown
Year: 1988
Subjects: subject: Crop Production/Industries
subject: International Relations/Trade
subject: Canadian imports
subject: wheat
subject: corn
subject: contemporaneous correlation
subject: Zellner's seemingly unrelated regression
subject: ordinary least squares
subject: price elasticities of import demand
subject: forecast performance

description: A multicrop model of Canadian demand for US crops is estimated with Zellner's seemingly unrelated regression (SUR), which corrects for the distortion problem in contemporaneous correlation, and with ordinary least squares (OLS), which ignores the problem Comparing inference parameters, trade elasticity estimates, and out-of-sample foremast performance of the Canadian import demand model's SUR and OLS versions demonstrates the importance of addressing contemporaneous correlation, even though both estimators are unbiased This article addresses three shortcomings of the agricultural trade literature frequent failure to account for easily corrected econometric problems, excessively wide ranges of trade parameter estimates, and frequent failure by researchers to validate models beyond the sample
Electron scattering near an itinerant to localized electronic transition
Creators: name: Rivadulla, F.
name: Zhou, J. -S.
name: Goodenough, J. B.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report an unconventional temperature dependence of the resistivity in several strongly correlated systems approaching a localized to itinerant electronic transition from the itinerant electron side. The observed resistivity, proportioanl to T^(3/2)over the entire range of materials discussed, cannot be explained within the framework of existing theories. We propose a model in which the scattering of the conduction electrons by locally cooperative bond-length fluctuations in a matrix of vibronic and Fermi-liquid electrons can account for the experimental data.
description: To appear in Phys. Rev. B
To the theory of entropy sub-solutions of degenerate non-linear parabolic equations
Creators: name: Panov, Evgeny Yu.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35K55, 35K65, 35L65, 35B10

description: We prove existence of the largest entropy sub-solution and the smallest entropy super-solution to the Cauchy problem for a nonlinear degenerate parabolic equation with only continuous flux and diffusion functions. Applying this result, we establish the uniqueness of entropy solution with periodic initial data. The more general comparison principle is also proved in the case when at least one of the initial functions is periodic.
Optimal investment with random endowments in incomplete markets
Creators: name: Hugonnier, Julien
name: Kramkov, Dmitry
Publisher: name: arXiv
Year: 2004
Subjects: subject: Probability (math.PR)
subject: Portfolio Management (q-fin.PM)
subject: FOS: Mathematics
subject: FOS: Economics and business
subject: 90A09, 90A10, 90C26. (Primary)

description: In this paper, we study the problem of expected utility maximization of an agent who, in addition to an initial capital, receives random endowments at maturity. Contrary to previous studies, we treat as the variables of the optimization problem not only the initial capital but also the number of units of the random endowments. We show that this approach leads to a dual problem, whose solution is always attained in the space of random variables. In particular, this technique does not require the use of finitely additive measures and the related assumption that the endowments are bounded.
Groundwater storage change detection from in situ and GRACE-based estimates in major river basins across India
Creators: name: Soumendra N. Bhanja
name: Abhijit Mukherjee
name: Rodell, Matthew
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Plant Biology

description: India has been the subject of many recent groundwater studies due to the rapid depletion of groundwater in large parts of the country. However, few if any of these studies have examined groundwater storage conditions in all of India’s river basins individually. Herein we assess groundwater storage changes in all 22 of India’s major river basins using in situ data from 3420 observation locations for the period 2003–2014. One-month and 12-month standardized precipitation index measures (SPI-1 and SPI-12) indicate fluctuations in the long-term pattern. The Ganges and Brahmaputra basins experienced long-term decreasing trends in precipitation in both 1961–2014 and the study period, 2003–2014. Indeterminate or increasing precipitation trends occurred in other basins. Satellite-based and in situ groundwater storage time series exhibited similar patterns, with increases in most of the basins. However, diminishing groundwater storage (at rates of >0.4 km3/year) was revealed in the Ganges-Brahmaputra River Basin based on in situ observations, which is particularly important due to its agricultural productivity.
A Web Page Classifier Library Based on Random Image Content Analysis Using Deep Learning
Creators: name: Leal, Leonardo Espinosa
name: Björk, Kaj-Mikael
name: Lendasse, Amaury
name: Akusok, Anton
Publisher: name: arXiv
Year: 2019
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences
subject: I.4

description: In this paper, we present a methodology and the corresponding Python library 1 for the classification of webpages. Our method retrieves a fixed number of images from a given webpage, and based on them classifies the webpage into a set of established classes with a given probability. The library trains a random forest model build upon the features extracted from images by a pre-trained deep network. The implementation is tested by recognizing weapon class webpages in a curated list of 3859 websites. The results show that the best method of classifying a webpage into the studies classes is to assign the class according to the maximum probability of any image belonging to this (weapon) class being above the threshold, across all the retrieved images. Further research explores the possibilities for the developed methodology to also apply in image classification for healthcare applications.
description: 4 pages, 3 figures. Proceedings of the 11th PErvasive Technologies Related to Assistive Environments Conference. ACM, 2018
Agricultural and Rural Data Paradigms
Creators: name: Boxley, Robert F.
name: Boxley, Robert F.
Publisher: name: Unknown
Year: 1988
Subjects: subject: Agricultural and Food Policy
subject: Community/Rural/Urban Development
subject: Research and Development/Tech Change/Emerging Technologies
subject: Research Methods/ Statistical Methods
subject: Agricultural data
subject: rural data
subject: economic surveys
subject: information systems

description: Numerous observers have charged US agricultural data systems with conceptual obsolescence Although some modernization has occurred, particularly in providing information about commercial farms, agricultural and rural data bases have failed to keep up with production and structural changes in the sector and in rural America I propose a production paradigm for the food and fiber system based on the concept of a primary agricultural producer Among other attributes, the concept of a primary agricultural producer provides opportunities to redirect existing surveys, possibly including the Census of Agriculture, to the collection of broader rural or natural resources data sets Before such a redirection can be made, however, a new paradigm of rural people and resources is needed
Tibetxya Cao & Yang & Shen & Yin 2021, gen. nov.
Creators: name: Cao, Cheng-Quan
name: Yang, Kai-Yan
name: Shen, Zi-Hao
name: Yin, Zhan
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Orthoptera
Tridactylidae
Tibetxya

description: Tibetxya gen. nov.
 Type species: Tibetxya motuoensis sp. nov. (Fig.1 A–E, Fig. 2 A–H).
 Diagnosis: The new genus lacking swimming plates at metatibia and metatarsus degenerated is allied to Paraxya Cao, Chen & Yin, 2019, but differs from latter by length of head and pronotum longer than tegmen, tegmen with Sc vein and R vein, length of metatibia 2.3 times length of apical spurs and 8 th segment of antennae not narrow in base. The new genus is also allied to Xya Latreille, 1809, but differs from latter by the metatibia lacking swimming plates.
 Etymology: The new genus is name Tibet, Tibetxya showing the new genus from Tibet, China.
description: Published as part of Cao, Cheng-Quan, Yang, Kai-Yan, Shen, Zi-Hao & Yin, Zhan, 2021, A new genus and a new species of pygmy mole cricket from China (Orthoptera: Tridactylidae), pp. 91-94 in Zootaxa 5005 (1) on page 91, DOI: 10.11646/zootaxa.5005.1.8, http://zenodo.org/record/5141245
Two-Step Electroweak Symmetry-Breaking: Theory Meets Experiment
Creators: name: Bell, Nicole F.
name: Dolan, Matthew J.
name: Friedrich, Leon S.
name: Ramsey-Musolf, Michael J.
name: Volkas, Raymond R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the phenomenology of a hypercharge-zero SU(2) triplet scalar whose existence is motivated by two-step electroweak symmetry-breaking. We consider both the possibility that the triplets are stable and contribute to the dark matter density, or that they decay via mixing with the standard model Higgs boson. The former is constrained by disappearing charged track searches at the LHC and by dark matter direct detection experiments, while the latter is constrained by existing multilepton collider searches. We find that a two-step electroweak phase transition involving a stable triplet with a negative quadratic term is ruled out by direct detection searches, while an unstable triplet with a mass less than $230\ \mathrm{GeV}$ is excluded at $95\%$ confidence level.
description: 31 pages, 10 figures. Updated to match version published in JHEP