cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
OVERVIEW OF THE HUNGARIAN AGRICULTURAL SUPPORT SYSTEM IN OPERATION
Creators: name: Pusztai-Kaldi, Judit
name: Nemeth, Anett
name: Pusztai-Kaldi, Judit
name: Nemeth, Anett
Publisher: name: Unknown
Year: 2005
Subjects: subject: Agricultural and Food Policy
subject: harmonisation processes
subject: requirements of new support system
subject: adaptability - harmonizációs folyamat
subject: új támogatási rendszer követelményei
subject: alkalmazkodás

description: During the past decade before the EU accession the necessary harmonisation processes have been carried out to facilitate Hungary’s EU membership. Probably the most important adaptation was necessary by the agriculture, and agricultural support system. Agricultural producers in the EU member states have several possibilities to apply for financial support besides direct payments, in order to increase effectiveness of production. Hungarian farmers and agricultural entrepreneurs faced a new support system in the frame of Preaccession Funds; they experienced the support system of Structural Funds and the Cohesion Fund. This paper should give an overview and summary of the ruling support system, with special aspects of the Single Payment Scheme. An accurate and suitable registration system is required from the farmers both in case of direct payments and in case of project applications from the Structural Funds. To be able to sustain a long timeviable farm it is very important for the farmers and also for the country to take advantage of chances of the Common Agricultural Policy. XXXXXXXXXXXXXXXXXXXXXXXXX Magyarországnak az Európai Unióhoz csatlakozását megelőző közel egy évti-zedben megtörténtek azok a harmonizálási folyamatok, amelyek feltételei voltak hazánk uniós taggá válásának. Jelentős adaptációra főleg a mezőgazdaság terén volt szükség, ezen belül is a legjelentősebb változás a támogatási rendszerben kö-vetkezett be. A tagországok mezőgazdasági termelői számára számos lehetőség adódik a közvetlen kifizetések mellett, amely a termelés hatékonyságát hivatott növelni. Hazánk gazdálkodói egy, az eddigi szokásoktól eltérő támogatási rend-szerrel ismerkedhettek meg az Előcsatlakozási Alapok forrásaira történő pályá-zatok során, mely rendszer a Strukturális Alapokból és a Kohéziós Alap forrása-iból igényelhető támogatásokra is vonatkozik. Jelen tanulmány e támogatási rendszert kívánja áttekinteni, összefoglalni. Mind a közvetlen támogatások, mind pedig a pályázati úton elnyerhető támogatások esetén fontos követelmény, hogy az igénylők megfelelő, pontos nyilvántartással rendelkezzenek. Ahhoz, hogy a termelők több éven keresztül életképes gazdaságot tudjanak fenntartani fontos, hogy kihasználják a Közös Agrárpolitika nyújtotta lehetőségeket. Legfontosabb feladat a támogatások lehetőségének minél szélesebb körű kihasználása, amely elősegítheti a magyar mezőgazdaság stabil helyzetének és a mezőgazdaságból élő lakosság megfelelő életkörülményeinek megteremtését.
Current topics on treatment comparison for survival endpoints with non-proportional hazards
Creators: name: Huang, Jingyu
Publisher: name: No Publisher Supplied
Year: 2021

description: The proportional hazards (PH) assumption is the key assumption which may need to be examined in each survival analysis. It is the underlying assumption for the Cox proportional hazards and the log-rank test achieves its maximum efficiency when the PH assumption is satisfied. However, when the PH assumption is violated, we may not be able to provide a valid clinical interpretation for the hazard ratio of treatment effect, and the log-rank test may no longer achieve its desired level of power. Many alternative tests and measures have been developed for the non-proportional hazards situation. Four of them, Weighted log-rank test, Max-Combo Test (MX), Maximin Efficiency Robust Test (MERT) and The Restricted Mean Survival Time (RMST), are studied in this dissertation. Since previous papers only introduced MERT results by using uncensored case correlation matrix, MERT result with real censored correlation is discussed in this dissertation. The performance of the four non-proportional approaches, namely, Weighted log-rank test, MX, MERT, and RMST, is evaluated under the null and six typical proportional/non-proportional hazards conditions. The strength and weakness for each approach is explored in this dissertation. In addition, this proposal compares the test performance between Fleming-Harrington family G0,0, G1,0, G0,1, G1,1 and family G0,0, G2,0, G0,2, G2,2 for Weighted log-rank test, MX and MERT. The best non-proportional hazards test among those four tests and two families is explored in this dissertation. In clinical trials, two stage design is commonly used to dismiss ineffective treatment early at the end of the first stage, in order to avoid the high cost and long trial duration. Conditional power is the conditional probability of a significant result at the end of the trial given the data observed thus far. It is commonly used to evaluate the possibility of stopping the trial for futility. It also can be used to calculate the new sample size in the sample size re-estimation at the interim stage. The RMST is a robust measure of the survival time distribution. It provide a clinically interpretable summary and is widely used in the non-proportional hazards situation, since it does not rely on the PH assumption. This dissertation describes how to calculate the CP for the RMST endpoint at the interim stage for non-proportional hazards models. An approach for predicting survival curve at the final stage is developed in order to calculate the correlation in test statistics between the interim and final stages.
Dilaton Black Holes in de Sitter or Anti-de Sitter Universe
Creators: name: Gao, Chang Jun
name: Zhang, Shuang Nan
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Poletti and Wiltshire have shown that, with the exception of a pure cosmological constant, the solution of a dilaton black hole in the background of de Sitter or anti-de Sitter universe, does not exist in the presence of one Liouville-type dilaton potential. Here with the combination of three Liouville-type dilaton potentials, we obtain the dilaton black hole solutions in the background of de Sitter or anti-de Sitter universe.
description: 13 pages,to appear in Phys. Rev. D
A community-powered search of machine learning strategy space to find NMR property prediction models
Creators: name: Bratholm, Lars A.
name: Gerrard, Will
name: Anderson, Brandon
name: Bai, Shaojie
name: Choi, Sunghwan
name: Dang, Lam
name: Hanchar, Pavel
name: Howard, Addison
name: Huard, Guillaume
name: Kim, Sanghoon
name: Kolter, Zico
name: Kondor, Risi
name: Kornbluth, Mordechai
name: Lee, Youhan
name: Lee, Youngsoo
name: Mailoa, Jonathan P.
name: Nguyen, Thanh Tu
name: Popovic, Milos
name: Rakocevic, Goran
name: Reade, Walter
name: Song, Wonho
name: Stojanovic, Luka
name: Thiede, Erik H.
name: Tijanic, Nebojsa
name: Torrubia, Andres
name: Willmott, Devin
name: Butts, Craig P.
name: Glowacki, David R.
name: participants, Kaggle
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Machine Learning (cs.LG)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: The rise of machine learning (ML) has created an explosion in the potential strategies for using data to make scientific predictions. For physical scientists wishing to apply ML strategies to a particular domain, it can be difficult to assess in advance what strategy to adopt within a vast space of possibilities. Here we outline the results of an online community-powered effort to swarm search the space of ML strategies and develop algorithms for predicting atomic-pairwise nuclear magnetic resonance (NMR) properties in molecules. Using an open-source dataset, we worked with Kaggle to design and host a 3-month competition which received 47,800 ML model predictions from 2,700 teams in 84 countries. Within 3 weeks, the Kaggle community produced models with comparable accuracy to our best previously published "in-house" efforts. A meta-ensemble model constructed as a linear combination of the top predictions has a prediction accuracy which exceeds that of any individual model, 7-19x better than our previous state-of-the-art. The results highlight the potential of transformer architectures for predicting quantum mechanical (QM) molecular properties.
Parameterization method for state-dependent delay perturbation of an ordinary differential equation
Creators: name: Yang, Jiaqi
name: Gimeno, Joan
name: de la Llave, Rafael
Publisher: name: arXiv
Year: 2020
Subjects: subject: Dynamical Systems (math.DS)
subject: Classical Analysis and ODEs (math.CA)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 34K19 39A23 39A60 39A30 37G15

description: We consider state-dependent delay equations (SDDE) obtained by adding delays to a planar ordinary differential equation with a limit cycle. These situations appear in models of several physical processes, where small delay effects are added. Even if the delays are small, they are very singular perturbations since the natural phase space of an SDDE is an infinite dimensional space. We show that the SDDE admits solutions which resemble the solutions of the ODE. That is, there exist a periodic solution and a two parameter family of solutions whose evolution converges to the periodic solution. Even if the phase space of the SDDE is naturally a space of functions, we show that there are initial values which lead to solutions similar to that of the ODE. The method of proof bypasses the theory of existence, uniqueness, dependence on parameters of SDDE. We consider the class of functions of time that have a well defined behavior (e.g. periodic, or asymptotic to periodic) and derive a functional equation which imposes that they are solutions of the SDDE. These functional equations are studied using methods of functional analysis. We provide a result in "a posteriori" format: Given an approximate solution of the functional equation, which has some good condition numbers, we prove that there is true solution close to the approximate one. Thus, we can use the result to validate the results of numerical computations. The method of proof leads also to practical algorithms. In a companion paper, we present the implementation details and representative results. One feature of the method presented here is that it allows to obtain smooth dependence on parameters for the periodic solutions and their slow stable manifolds without studying the smoothness of the flow (which seems to be problematic for SDDEs, for now the optimal result on smoothness of the flow is $C^1$).
description: 43 pages
Additional file 2 of The rise of diversity in metabolic platforms across the Candidate Phyla Radiation
Creators: name: Jaffe, Alexander L.
name: Castelle, Cindy J.
name: Carnevali, Paula B. Matheus
name: Gribaldo, Simonetta
name: Banfield, Jillian F.
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Evolutionary Biology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer
subject: Computational Biology

description: Additional file 2: Figure S1. Visual and phylogenetic approach to setting sensitive manual thresholds for phylogenetic markers. HMM rank vs. bitscore/e-value plot for a) ribosomal protein S3 (TIGR01009) and b) RNA polymerase, subunit beta (TIGR02013). c) Molecular phylogeny for significant (e > 0.05) TIGR02013 hits onto which HMM scores from b) are mapped. Figure S2. Consistent tree topology for the CPR recovered individually by a concatenation of a) 16 ribosomal proteins and b) B and B′ subunits of RNA polymerase. Clade shading corresponds to that in Fig. 1a. Scale bars represent the average number of substitutions per site. Ultrafast bootstrap support is indicated by the number attached to each tree node. Figure S3. Visual and phylogenetic approach to setting sensitive manual thresholds for metabolic genes of interest. HMM rank vs. bitscore/e-value plot for a) fructose 1,6-bisphosphatase (PF00316) and b) triose phosphate isomerase (TIGR00419). Molecular phylogeny for significant (e > 0.05) hits to c) PF00316 and d) TIGR00419 onto which HMM scores are mapped. Figure S4. Impact of genome completeness on patchiness for a) all enzymes within the major pathways in CPR bacteria examined in this study and b) individual enzymes within CPR glycolysis. Part c) shows the patchiness of each individual glycolytic enzyme as a function of genome completeness for four major lineages, including the CPR. PPP=Pentose Phosphate Pathway. dh = dehydrogenase. Figure S5. Maximum-likelihood gene trees for glycolytic enzymes in CPR bacteria. Different HMMs representing the same functions are grouped together by boxes. Scale bars represent the average number of substitutions per site. Black dots indicate tree nodes with > = 95% ultrafast bootstrap support. Figure S6. a) Maximum-likelihood gene tree for 3b-related NiFe hydrogenase small subunit (SSU) (fam019) with trimmed protein alignment for SSU sequences. Scale bar represents the average number of substitutions per site. Black dots indicate tree nodes with > = 95% ultrafast bootstrap support. b) Partial alignment of the L1 and L2 regions of putative Group 4-related NiFe hydrogenases. Ehr = energy-converting hydrogenases-related complexes. Red asterisk indicates cysteine residues associated with metal cofactor binding. N.B. for visual clarity, only a subset of sequences and sites are shown.
Quantum Variance and Ergodicity for the baker's map
Creators: name: Esposti, Mirko Degli
name: Nonnenmacher, Stéphane
name: Winn, Brian
Publisher: name: arXiv
Year: 2004
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 05.45.Mt

description: We prove a Egorov theorem, or quantum-classical correspondence, for the quantised baker's map, valid up to the Ehrenfest time. This yields a logarithmic upper bound for the decay of the quantum variance, and, as a corollary, a quantum ergodic theorem for this map.
Breakdown of quantum-to-classical correspondence for diffusion in high temperature thermal environment
Creators: name: Shapira, Dekel
name: Cohen, Doron
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We re-consider the old problem of Brownian motion in homogeneous high-temperature thermal environment. The semiclassical theory implies that the diffusion coefficient does not depend on whether the thermal fluctuations are correlated in space or disordered. We show that the corresponding quantum analysis exhibits a remarkable breakdown of quantum-to-classical correspondence. Explicit results are found for a tight binding model, within the framework of an Ohmic master equation, where we distinguish between on-site and on-bond dissipators. The breakdown is second-order in the inverse temperature, and therefore, on the quantitative side, involves an inherent ambiguity that is related to the Ohmic approximation scheme.
description: 14 pages, 3 figures
New Construction of Exotic Particles Algebra and Noncommutative Geometry
Creators: name: Douari, Jamila
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: This letter establishes a procedure which can determine an algebra of exotic particles obeying fractional statistics and living in two-dimensional space using a non-commuting coordinates.
description: v3; 7 pages, textual modifications and title changed, v4; some expressions corrected
A non-contact video-oculograph for tracking gaze in a human computer interface
Creators: name: Noureddin, Borna
Publisher: name: University of British Columbia
Year: 2012

description: Video-based eye tracking devices that can detect where a person is looking without requiring the user to wear anything can be effective components of a human computer interface. However, issues such as speed, accuracy, cost and case of use have so far limited the widespread, practical application of existing devices. No pre-existing device that does not require user contact is able to accurately track the eye (and hence where a person is looking) in real time in the presence of large head movements. This thesis attempts to overcome these limitations by presenting a novel design for a video-oculograph. It is a non-contact (i.e., it does not require the user to wear anything) human computer interface device, and uses two cameras to maintain accurate, real-time tracking of a person's eye in the presence of significant head motion. Image analysis techniques are used to obtain very accurate locations of the pupil and corneal reflection. All the computations are performed in software and the device only requires simple, compact optics and electronics attached to the user's computer via a serial port and IEEE 1394 interface, making the device very cost effective. An implementation of the design to track a user's fixations on a computer monitor is also evaluated in this thesis. Two methods of estimating the user's point of gaze on a computer monitor were evaluated. Using functional approximation, the gaze was estimated to within 5.2% of the monitor's width and 9.6% of the monitor's height. Using a direct, analytical approach, the gaze was estimated to within 22.0% horizontally and 27.8% vertically. Evidence was found to support further investigation into effective calibration procedures that would significantly improve the ability of the system to estimate the user's point of gaze. The implemented system - called GTD (Gaze Tracking Device) - is capable of reliably tracking the user's eye in real-time (nine frames per second) in the presence of natural head movements as fast as 100°/s horizontally and 77°/s vertically. It is able to track the location of the eye to within 0.758 pixels horizontally and 0.492 pixels vertically, and is robust to changes in eye colour and shape, ambient lighting and the use of eyeglasses.
Higher Dimensional Dilaton Black Holes with Cosmological Constant
Creators: name: Gao, Chang Jun
name: Zhang, Shuang Nan
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The metric of a higher-dimensional dilaton black hole in the presence of a cosmological constant is constructed. It is found that the cosmological constant is coupled to the dilaton in a non-trivial way. The dilaton potential with respect to the cosmological constant consists of three Liouville-type potentials.
description: 8 pages,to appear in Phys. Lett. B
Co-Evolution in Asia, Markets and Globalization
Creators: name: Tisdell, Clement A.
name: Tisdell, Clement A.
Publisher: name: Unknown
Year: 1998
Subjects: Environmental Economics and Policy

description: Economic, social and natural environmental systems are interdependent, and economic systems cannot be assessed in isolation from an interconnected whole. Many parts of Asia face increasing market intrusion and forced changes in economic mechanisms and rights without concomitant social and technological co-evolution. Consequently, serious problems for economic, social and environmental sustainability are being experienced by local communities, especially in remote regions and in peripheral areas such as Northeast India and in hilly regions of China. Rapid Asian economic growth, extension of markets and processes of globalization are generating social tensions and magnifying stresses on natural environments. Many subsistence and semi-subsistence communities have been suddenly confronted by the extension of markets and the backwash of globalization. This has promoted uneven development, loss of community, disintegration of social structures which have supported economic mutualism and which have provided social safety nets. In many cases too, natural resource bases and environments on which local communities depend for their livelihood are under threat, partly because systems of property rights and governance evolve slowly and externally imposed changes in these are often counterproductive. This is illustrated by examples from Northeast India and China involving slash-and-burn agriculture. Factors which may cause regional and social economic divergence in Asia in this globalizing world are discussed. These include differential access to global knowledge and communication networks. Urban and cosmopolitan communities probably stand to gain to gain most from globalization processes.
SANOAT KORXONALARIDA MOLIYAVIY OPERATSIYALARNI AVTOMATLASHTIRISHNING STRATEGIK ZARURATI VA IQTISODIY SAMARADORLIKKA TASIRI
Creators: name: To'qliyev, Abdirauf
Publisher: name: Academic Scientific Research
Year: 2024
Subjects: sanoat korxonalari
moliyaviy holat
samaradorlikni oshirish
tahlil
bozor iqtisodiyoti

description: Sanoat korxonalarining moliyaviy holatini muntazam ravishda tahlil qilmasdan samaradorlikni oshirish biroz mushkul jarayon hisoblandi. Ushbu ma’lumotlarni muntazam ravishda tahlil qilish uchun esa ma’lumotlarni tez va bexato yetkazib beruvchi vositalar talab qilinadi, ko‘rinib turibdiki bugungi kunning tez rivojlanayotgan bozor iqtisodiyoti xatolar va kamchiliklarni kechirmaydi. Kuchli tahlil kelajak uchun muhim strategiyalarning poydevori bo‘lib xizmat qiladi. Axborot texnologiyalari asrida, bozor iqtisodiyoti boshqa sohalar kabi kerakli ma‘lumot va yangiliklarga ehtiyoj sezadi.
Ballistic-to-diffusive transition in spin chains with broken integrability
Creators: name: Ferreira, João S.
name: Filippone, Michele
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the ballistic-to-diffusive transition induced by the weak breaking of integrability in a boundary-driven XXZ spin-chain. Studying the evolution of the spin current density $\mathcal J^s$ as a function of the system size $L$, we show that, accounting for boundary effects, the transition has a non-trivial universal behavior close to the XX limit. It is controlled by the scattering length $L^*\propto V^{-2}$, where $V$ is the strength of the integrability breaking term. In the XXZ model, the interplay of interactions controls the emergence of a transient "quasi-ballistic" regime at length scales much shorter than $L^*$. This parametrically large regime is characterized by a strong renormalization of the current which forbids a universal scaling, unlike the XX model. Our results are based on Matrix Product Operator numerical simulations and agree with perturbative analytical calculations.
description: 13 pages, 9 figures
Black Strings in Our World
Creators: name: Nakano, Hiroyuki
name: Nakao, Ken-ichi
name: Yamaguchi, Masahide
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The brane world scenario is a new approach to resolve the problem on how to compactify the higher dimensional spacetime to our 4-dimensional world. One of the remarkable features of this scenario is the higher dimensional effects in classical gravitational interactions at short distances. Due to this feature, there are black string solutions in our 4-dimensional world. In this paper, assuming the simplest model of complex minimally coupled scalar field with the local U(1) symmetry, we show a possibility of black-string formation by merging processes of type I long cosmic strings in our 4-dimensional world. No fine tuning for the parameters in the model might be necessary.
description: 11pages, no figure
Quantum Simulation of a Discrete-Time Quantum Stochastic Walk
Creators: name: Schuhmacher, Peter K.
name: Govia, Luke C. G.
name: Taketani, Bruno G.
name: Wilhelm, Frank K.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum walks have been shown to have a wide range of applications, from artificial intelligence, to photosynthesis, and quantum transport. Quantum stochastic walks (QSWs) generalize this concept to additional non-unitary evolution. In this paper, we propose a trajectory-based quantum simulation protocol to effectively implement a family of discrete-time QSWs in a quantum device. After deriving the protocol for a 2-vertex graph with a single edge, we show how our protocol generalizes to a graph with arbitrary topology and connectivity. The straight-forward generalization leads to simple scaling of the protocol to complex graphs. Finally, we show how to simulate a restricted class of continuous-time QSWs by a discrete-time QSW, and how this is amenable to our simulation protocol for discrete-time QSWs.
Toward Enabling Reproducibility for Data-Intensive Research using the Whole Tale Platform
Creators: name: Chard, Kyle
name: Gaffney, Niall
name: Hategan, Mihael
name: Kowalik, Kacper
name: Ludaescher, Bertram
name: McPhillips, Timothy
name: Nabrzyski, Jarek
name: Stodden, Victoria
name: Taylor, Ian
name: Thelen, Thomas
name: Turk, Matthew J.
name: Willis, Craig
Publisher: name: arXiv
Year: 2020
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: Whole Tale http://wholetale.org is a web-based, open-source platform for reproducible research supporting the creation, sharing, execution, and verification of "Tales" for the scientific research community. Tales are executable research objects that capture the code, data, and environment along with narrative and workflow information needed to re-create computational results from scientific studies. Creating reproducible research objects that enable reproducibility, transparency, and re-execution for computational experiments requiring significant compute resources or utilizing massive data is an especially challenging open problem. We describe opportunities, challenges, and solutions to facilitating reproducibility for data- and compute-intensive research, that we call "Tales at Scale," using the Whole Tale computing platform. We highlight challenges and solutions in frontend responsiveness needs, gaps in current middleware design and implementation, network restrictions, containerization, and data access. Finally, we discuss challenges in packaging computational experiment implementations for portable data-intensive Tales and outline future work.
Roper Commercial # 97: Politics and the Presidential Election
Creators: name: Organization, The Roper
Publisher: name: Roper Center for Public Opinion Research
Year: 2021

description: Election interest (1); party affiliation (1); Republic vs. Democratic candidate (2); primary elections (2); voter registration (1); voter participation (1); most important election issues (1); importance of various candidate attributes (20); most qualified candidates (40); confidence in candidate support groups (13); candidates with group support (36); preferred Democratic candidate (4); Presidential candidate preference (2); farming situation (1); labor unions (1); parochial school government aid (1); maintaining prosperity (1); Catholic president (1).
A fractional-order compartmental model for predicting the spread of the Covid-19 pandemic
Creators: name: Biala, Toheeb A.
name: Khaliq, Abdul Q.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences
subject: 65M05, 65M06

description: We propose a time-fractional compartmental model (SEI$_A$I$_S$HRD) comprising of the susceptible, exposed, infected (asymptomatic and symptomatic), hospitalized, recovered and dead population for the Covid-19 pandemic. We study the properties and dynamics of the proposed model. The conditions under which the disease-free and endemic equilibrium points are asymptotically stable are discussed. Furthermore, we study the sensitivity of the parameters and use the data from Tennessee state (as a case study) to discuss identifiability of the parameters of the model. The non-negative parameters in the model are obtained by solving inverse problems with empirical data from California, Florida, Georgia, Maryland, Tennessee, Texas, Washington and Wisconsin. The basic reproduction number is seen to be slightly above the critical value of one suggesting that stricter measures such as the use of face-masks, social distancing, contact tracing, and even longer stay-at-home orders need to be enforced in order to mitigate the spread of the virus. As stay-at-home orders are rescinded in some of these states, we see that the number of cases began to increase almost immediately and may continue to rise until the end of the year 2020 unless stricter measures are taken.
Asia's Livestock Industries: Changes and Environmental Consequences
Creators: name: Tisdell, Clement A.
name: Tisdell, Clement A.
Publisher: name: Unknown
Year: 1998
Subjects: Environmental Economics and Policy
International Relations/Trade
Livestock Production/Industries

description: Asia’s livestock populations and production of edible livestock have risen substantially in recent years. Asia has increased its global share of livestock and livestock products. Furthermore, it has greatly increased its involvement in world trade in edible livestock products, e.g., exports of poultry meat and pig meat and imports of bovine meat and milk products. This article highlights these changes focussing on China, considers the reasons for these and their possible consequences for the environment. Future possible threats to Asia’s export of livestock products are also discussed, such as environmental and animal welfare concerns.
Current-induced magnetization dynamics in disordered itinerant ferromagnets
Creators: name: Tserkovnyak, Yaroslav
name: Skadsem, Hans Joakim
name: Brataas, Arne
name: Bauer, Gerrit E. W.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Current-driven magnetization dynamics in ferromagnetic metals are studied in a self-consistent adiabatic local-density approximation in the presence of spin-conserving and spin-dephasing impurity scattering. Based on a quantum kinetic equation, we derive Gilbert damping and spin-transfer torques entering the Landau-Lifshitz equation to linear order in frequency and wave vector. Gilbert damping and a current-driven dissipative torque scale identically and compete, with the result that a steady current-driven domain-wall motion is insensitive to spin dephasing in the limit of weak ferromagnetism. A uniform magnetization is found to be much more stable against spin torques in the itinerant than in the \textit{s}-\textit{d} model for ferromagnetism. A dynamic spin-transfer torque reminiscent of the spin pumping in multilayers is identified and shown to govern the current-induced domain-wall distortion.
An explicit pseudo-energy conserving time-integration scheme for Hamiltonian dynamics
Creators: name: Marazzato, Frédéric
name: Ern, Alexandre
name: Mariotti, Christian
name: Monasse, Laurent
Publisher: name: arXiv
Year: 2020
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: We propose a new explicit pseudo-energy and momentum conserving scheme for the time integration of Hamiltonian systems. The scheme, which is formally second-order accurate, is based on two key ideas: the integration during the time-steps of forces between free-flight particles and the use of momentum jumps at the discrete time nodes leading to a two-step formulation for the acceleration. The pseudo-energy conservation is established under exact force integration, whereas it is valid to second-order accuracy in the presence of quadrature errors. Moreover, we devise an asynchronous version of the scheme that can be used in the framework of slow-fast time-stepping strategies. The scheme is validated against classical benchmarks and on nonlinear or inhomogeneous wave propagation problems.
NMR and NQR studies on transition-metal arsenide superconductors LaRu2As2, KCa2Fe4As4F2, and A2Cr3As3
Creators: name: Luo, Jun
name: Wang, Chunguang
name: Wang, Zhicheng
name: Guo, Qi
name: Yang, Jie
name: Zhou, Rui
name: Matano, K.
name: Oguchi, T.
name: Ren, Zhian
name: Cao, Guanghan
name: Zheng, Guo-qing
Publisher: name: arXiv
Year: 2020
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We report 75As-nuclear magnetic resonance (NMR) and nuclear quadrupole resonance (NQR) measurements on transition-metal arsenides LaRu2As2, KCa2Fe4As4F2, and A2Cr3As3. In the superconducting state of LaRu2As2, a Hebel- Slichter coherence peak is found in the temperature dependence of the spin-lattice relaxation rate-1/T1 just below Tc, which indicates that LaRu2As2 is a full-gap superperconducor. For KCa2Fe4As4F2, antiferromagnetic spin fluctuations are observed in the normal state. We further find that the anisotropy rate RAF = Tc1/Tab1 is small and temperature independent, implying that the low energy spin fluctuations are isotropic in spin space. Our results indicate that KCa2Fe4As4F2 is a moderately overdoped iron-arsenide high-temperature superconductor with a stoichiometric composition. For A2Cr3As3, we calculate the electric field gradient by first-principle method and assign the 75As-NQR peaks with two crystallographically different As sites, paving the way for further NMR investigation.
description: 19 pages, 10 figures
PACE Solver Description: Bute-Plus: A Bottom-Up Exact Solver for Treedepth
Creators: name: Trimble, James
Publisher: name: arXiv
Year: 2020
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: Discrete Mathematics (cs.DM)
subject: FOS: Computer and information sciences
subject: G.2.2

description: This note introduces Bute-Plus, an exact solver for the treedepth problem. The core of the solver is a positive-instance driven dynamic program that constructs an elimination tree of minimum depth in a bottom-up fashion. Three features greatly improve the algorithm's run time. The first of these is a specialised trie data structure. The second is a domination rule. The third is a heuristic presolve step can quickly find a treedepth decomposition of optimal depth for many instances.
description: 4 pages, 1 appendix pages, 0 figures. A version of this tool description paper without the appendix is published in the proceedings of IPEC 2020: https://drops.dagstuhl.de/opus/volltexte/2020/13337/pdf/LIPIcs-IPEC-2020-34.pdf . Changes: this version expands the paper from a preliminary version
Additional file 1 of Efficacy and safety of Dingkun pill for female infertility patients with low prognosis undergoing in vitro fertilization-embryo transfer: study protocol for a multicenter, double-blind, randomized, placebo-controlled trial
Creators: name: Jingyan Song
name: Ma, Ting
name: Yanlin Liang
name: Xianling Cao
name: Sun, Zhengao
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Cell Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Developmental Biology
subject: Cancer
subject: Science Policy

description: Additional file 1.
Additional file 1 of Registered nurses’ experiences of communication with patients when practising person–centred care over the phone: a qualitative interview study
Creators: name: Boström, Eva
name: Ali, Lilas
name: Fors, Andreas
name: Ekman, Inger
name: Andersson, Annette Erichsen
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Cancer
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 1.
Properties of materials considered for improvised masks
Creators: name: Rogak, Steven. N.
name: Sipkens, Timothy A.
name: Guan, Mang
name: Nikookar, Hamed
name: Figueroa, Daniela Vargas
name: Wang, Jing
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applied Physics (physics.app-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: During a pandemic in which aerosol and droplet transmission is possible, the demand for masks that meet medical or workplace standards can prevent most individuals or organizations from obtaining suitable protection. Cloth masks are widely believed to impede droplet and aerosol transmission but most are constructed from materials with unknown filtration efficiency, airflow resistance and water resistance. Further, there has been no clear guidance on the most important performance metrics for the materials used by the general public (as opposed to high-risk healthcare settings). Here we provide data on a range of common fabrics that might be used to construct masks. None of the materials were suitable for masks meeting the N95 NIOSH standard, but many could provide useful filtration (>90%) of 3 micron particles (a plausible challenge size for human generated aerosols), with low pressure drop. These were: nonwoven sterile wraps, dried baby wipes and some double-knit cotton materials. Decontamination of N95 masks using isopropyl alcohol produces the expected increase in particle penetration, but for 3 micron particles, filtration efficiency is still well above 95%. Tightly woven thin fabrics, despite having the visual appearance of a good particle barrier, had remarkably low filtration efficiency and high pressure drop. These differences in filtration performance can be partly explained by the material structure; the better structures expose individual fibers to the flow while the poor materials may have small fundamental fibers but these are in tightly bundled yarns. The fit and use of the whole mask are critical factors not addressed in this work. Despite the complexity of the design of a very good mask, it is clear that for the larger aerosol particles, any mask will provide substantial protection to the wearer and those around them.
description: 7 figures, Submitted to Aerosol Science & Technology
Can the Collins mechanism explain the large transverse single spin asymmetries observed in p(transv. polarized) p --> pion X?
Creators: name: Anselmino, M.
name: Boglione, M.
name: D'Alesio, U.
name: Leader, E.
name: Murgia, F.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a calculation of inclusive polarised and unpolarised cross sections within pQCD and the factorisation scheme, taking into account the parton intrinsic motion, k_T, in distribution and fragmentation functions, as well as in the elementary dynamics. We show, in contradiction with earlier claims, that the Collins mechanism is suppressed and unable to explain the large asymmetries found in p(transv. polarized) p --> pion X at moderate to large Feynman x_F. The Sivers effect is not suppressed.
description: LaTeX 2e, 5 pages, 1 ps figure, uses ws-procs9x6. Talk delivered by U. D'Alesio at the ``16th International Spin Physics Symposium'', SPIN2004, October 10-16, 2004, Trieste, Italy
title: Математика. Часть 4
Creators: name: ELS IPR BOOKS
Publisher: name: Ай Пи Ар Медиа
Year: 2024

description: Настоящий практикум дополняет изданные ранее «Практикумы» (части 1–3) и предназначен для изучения дисциплины «Математика» на втором курсе технического вуза, точнее, ее важнейшего раздела «Теория вероятности и математическая статистика». Структура книги соответствует предыдущим частям: каждая глава содержит краткие теоретические сведения, задачи с решениями, а также задачи для самостоятельной работы. Разбор ключевых задач и наличие ответов ко всем задачам позволяет использовать пособие для самостоятельного изучения материала и подготовки к занятиям. Практикум подготовлен в соответствии с требованиями Федерального государственного образовательного стандарта высшего образования, предъявляемыми к дисциплине «Математика». Предназначен для студентов, получающих высшее образование по техническим специальностям и направлениям подготовки, а также будет полезен преподавателям, ведущим практические занятия и практикумы.
Additional file 5 of Conjunctival structure of glaucomatous eyes treated with anti-glaucoma eye drops: a cross-sectional study using anterior segment optical coherence tomography
Creators: name: Gozawa, Makoto
name: Takamura, Yoshihiro
name: Iwasaki, Kentaro
name: Arimura, Shogo
name: Inatani, Masaru
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Cell Biology
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Developmental Biology
subject: Cancer
subject: Science Policy

description: Additional file 5: Supplemental file 5. The univariate and general linear mixed model (GLMM) analyses on the Tenon’s capsule/sclera preservation rate. a. The effects of background characteristics. b. The effects of anti-glaucoma eye drops.
Testing Non-local Nucleon-Nucleon Interactions in the Four-Nucleon Systems
Creators: name: Lazauskas, Rimantas
name: Carbonell, Jaume
Publisher: name: arXiv
Year: 2004
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The Faddeev-Yakubovski equations are solved in configuration space for the $% α$-particle and n-$^3$H continuum states. We test the ability of nonlocal nucleon-nucleon interaction models to describe 3N and 4N systems.
description: 16 pages, 6 figures
How Knowledge Affects Payment to Conserve an Endangered Bird
Creators: name: Wilson, Clevo
name: Tisdell, Clement A.
name: Wilson, Clevo
name: Tisdell, Clement A.
Publisher: name: Unknown
Year: 2005
Subjects: Environmental Economics and Policy

description: The paper reports the findings of an experimental survey conducted to determine the public’s willingness to pay for the protection and conservation of the golden-shouldered parrot in Australia. This parrot is endemic to Australia and is one of Australia’s most endangered birds. The paper examines the public’s knowledge of this parrot and compares it with other endangered birds as well as common birds and the public’s willingness to pay for conservation from a hypothetical allocation of money based on their current knowledge. We then examine how this allocation changes with increased knowledge about all species. Comparisons are made.
A Search for Extra-Tidal RR Lyrae in the Globular Cluster NGC 5024 and NGC 5053
Creators: name: Ngeow, Chow-Choong
name: Belecki, Justin
name: Burruss, Rick
name: Drake, Andrew J.
name: Graham, Matthew J.
name: Kaplan, David L.
name: Kupfer, Thomas
name: Mahabal, Ashish
name: Masci, Frank J.
name: Riddle, Reed
name: Rodriguez, Hector
name: Rusholme, Ben
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Recently, Kundu et al (2019) reported that the globular cluster NGC 5024 (M53) possesses five extra-tidal RR Lyrae. In fact, four of them were instead known members of a nearby globular cluster NGC 5053. The status of the remaining extra-tidal RR Lyrae is controversial depending on the adopted tidal radius of NGC 5024. We have also searched for additional extra-tidal RR Lyrae within an area of $\sim8$~deg$^2$ covering both globular clusters. This includes other known RR Lyrae within the search area, as well as stars that fall within the expected range of magnitudes and colors for RR Lyrae (and yet outside the cutoff of 2/3 of the tidal radii of each globular clusters for something to be called "extra-tidal") if they were extra-tidal RR Lyrae candidates for NGC 5024 or NGC 5053. Based on the the proper motion information and their locations on the color-magnitude diagram, none of the known RR Lyrae belong to the extra-tidal RR Lyrae of either globular clusters. In the cases where the stars satisfied the magnitude and color ranges of RR Lyrae, analysis of time series data taken from the Zwicky Transient Facility do not reveal periodicities, suggesting that none of these stars are RR Lyrae. We conclude that there are no extra-tidal RR Lyrae associated with either NGC 5024 or NGC 5053 located within our search area.
description: 17 pages, 2 Tables, 12 Figures, AJ accepted
Additional file 4 of Conjunctival structure of glaucomatous eyes treated with anti-glaucoma eye drops: a cross-sectional study using anterior segment optical coherence tomography
Creators: name: Gozawa, Makoto
name: Takamura, Yoshihiro
name: Iwasaki, Kentaro
name: Arimura, Shogo
name: Inatani, Masaru
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Cell Biology
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Developmental Biology
subject: Cancer
subject: Science Policy

description: Additional file 4: Supplemental file 4. The univariate and general linear mixed model (GLMM) analyses on the conjunctival stroma/Tenon’s capsule preservation rate. a. The effects of background characteristics. b. The effects of anti-glaucoma eye drops.
Non-linear cyclic regimes of short-term climate variability
Creators: name: Sih, Perry
Publisher: name: University of British Columbia
Year: 2009

description: The Circular Non-linear Principal Component Analysis (CNLPCA), a variation of the non-linear version of the traditional Principal Component Analysis (PCA), is introduced. It is then applied to monthly-averaged geopotential heights of the NASA Goddard Institute for Space Studies SI2000 Global Circulation Model (GCM). It is shown that height variability in the model troposphere and stratosphere is essentially linear, even with different aerosol forcings. The daily-averaged model output show weak non-linearity. When CNLPCA is applied to observed geopotential height data, cyclic behaviour appears. The preferred states of the climate system can be seen. This cyclic behaviour can be tracked by recording the phase angle, a unique feature of the CNLPCA. By doing so, the preferred direction, as well as the frequency, of the cyclic behaviour can be found.
Public Choice of Species for the Ark: Phylogenetic Similarity and Preferred Wildlife Species for Survival
Creators: name: Tisdell, Clement A.
name: Wilson, Clevo
name: Swarna Nantha, Hemanath
name: Tisdell, Clement A.
name: Wilson, Clevo
name: Swarna Nantha, Hemanath
Publisher: name: Unknown
Year: 2005
Subjects: Environmental Economics and Policy

description: Humans play a role in deciding which species are preserved and which will perish in the current extinction wave. Because of the Similarity Principle, physical attractiveness and likeability, it is argued that public choice would greatly favour the survival of higher-order species at the expense of others. This paper empirically tests this argument by considering a hypothetical ‘Ark’ situation. Results are drawn from surveys of 204 members of the Australian public who were asked whether they are in favour of the survival of each of 24 native mammal, bird and reptile species. The species were ranked by percentage of ‘yes’ votes received. Species composition in various fractions of the ranking was determined. If the Similarity Principle holds, mammals would rank highly and dominate the top fractions of animals in the hierarchical list that would be saved (i.e., taken on the ‘Ark’). We find that although mammals would be over-represented in the ‘Ark’, birds and reptiles would also be well represented when social choice is based on numbers ‘voting’ for the survival of each species. Differences in public support for species in the relevant taxa are not as statistically significant as one might expect from the Similarity Principle.