cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Characteristic classes of gauge systems
Creators: name: Lyakhovich, S. L.
name: Sharapov, A. A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Differential Geometry (math.DG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We define and study invariants which can be uniformly constructed for any gauge system. By a gauge system we understand an (anti-)Poisson supermanifold provided with an odd Hamiltonian self-commuting vector field called a homological vector field. This definition encompasses all the cases usually included into the notion of a gauge theory in physics as well as some other similar (but different) structures like Lie or Courant algebroids. For Lagrangian gauge theories or Hamiltonian first class constrained systems, the homological vector field is identified with the classical BRST transformation operator. We define characteristic classes of a gauge system as universal cohomology classes of the homological vector field, which are uniformly constructed in terms of this vector field itself. Not striving to exhaustively classify all the characteristic classes in this work, we compute those invariants which are built up in terms of the first derivatives of the homological vector field. We also consider the cohomological operations in the space of all the characteristic classes. In particular, we show that the (anti-)Poisson bracket becomes trivial when applied to the space of all the characteristic classes, instead the latter space can be endowed with another Lie bracket operation. Making use of this Lie bracket one can generate new characteristic classes involving higher derivatives of the homological vector field. The simplest characteristic classes are illustrated by the examples relating them to anomalies in the traditional BV or BFV-BRST theory and to characteristic classes of (singular) foliations.
description: 23 pages, references added, typos corrected
Standardization of the Industrial Chain of Distinctive Agricultural Products Based on Network Platform
Creators: name: Ru, Yu
name: Shi, Zhen-Ni
name: Li, Fan
name: Xu, Tao
name: Wang, Zhen
name: Chen, Li-Ming
name: Ru, Yu
name: Shi, Zhen-Ni
name: Li, Fan
name: Xu, Tao
name: Wang, Zhen
name: Chen, Li-Ming
Publisher: name: Unknown
Year: 2011
Subjects: subject: Agribusiness
subject: Distinctive fruits
subject: Online trade
subject: Standardization system
subject: Agricultural industrial chain
subject: China

description: In the paper, the concept of circulation industrial chain of distinctive agricultural products is introduced. By using the e-commerce platform, the new industrial chain for the circulation of distinctive agricultural products on the basis of online transaction is established. In view of the standardization problems in the production and processing section, online exhibition and trade section, after sale section, the related solutions are put forward. In the production and processing sections, the fruit farmers should implement scale cultivation; pick and store fruits according to the local situation; pack fruits by using green package which can represent the features of the brand; establish the agricultural products association. In the section of online exhibition and trade, the identity of network platform should be normalized and the authentication technique and system should be perfected; the unification of product exhibition should be paid attention to; the specialization of negotiation should be intensified and the differences in communication should be represented; the price should be made comprehensively and the reference factors should be diversified; the entrance situation should be legalized and the account should be managed differently. In the after sale section, the business scope of logistics should be expanded and technology should be input; taking the customers as the center, the subsystem of distinctive service standard should be stipulated; the credit evaluation standard and punishment mechanism should be clarified; the customer-related management system should be implemented as well as the supervision mechanism.
Additional file 3 of Purification and production of Plasmodium falciparum zygotes from in vitro culture using magnetic column and Percoll density gradient
Creators: name: Yaxian Zhou
name: Grieser, Alexis M.
name: Do, Julie
name: Itsara, Leslie S.
name: Vaughan, Ashley M.
name: Ghosh, Anil K.
Publisher: name: figshare
Year: 2020
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Molecular Biology
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 3: Table S1. Enrichment of zygotes during purification using “1 MACS 1 Accudenz” method.
The Status Quo of Chinese Agro-products Logistics and the Establishment of the Third-Party Logistics Mode
Creators: name: Chen, Jing
name: Chen, Jing
Publisher: name: Unknown
Year: 2011
Subjects: subject: Agribusiness
subject: Agro-products
subject: Circulation pattern
subject: The third-party logistics
subject: China

description: The status quo of Chinese agro-products logistics is analyzed from the following five aspects: the circulation mode, exchange mode, storage and transportation situation, food security. The following problems in Chinese agro-products logistics are pointed out, including excessive circulation sections, bad time efficiency, single payment, slow circulation, backward information processing, obvious bullwhip effect, low logistics efficiency, low logistics technology, inadequate professional equipments, low standardization degree, organized operation mode and low degree of scale. The third-party logistics mode of agro-products is analyzed and the advantages of the mode are analyzed as well. Firstly, establishing information network through integrating circulation section to accelerate the circulation of agro-products; secondly, making the operation norms by providing professional equipments to secure the quality of agricultural products; thirdly, improving the core competitiveness of the whole logistics chain by intensifying specialized work division in each section of the supply chain; fourthly, through forming scale economy to reduce logistics costs and increase the diversity of products; fifthly, through signing contracts to clarify duties and responsibilities and materialize the profit integration of the supply chain. The measures for establishing the third-party logistics of agro-products are put forward, including establish the awareness and concept of socialized logistics services ; intensify the support on the third-party logistics enterprises of agro-products ; lay stress on the cultivation of logistics talents of agro-products; and vigorously apply the modern marketing means.
Quantum fields and "Big Rip" expansion singularities
Creators: name: Calderon, Hector
name: Hiscock, William A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The effects of quantized conformally invariant massless fields on the evolution of cosmological models containing a ``Big Rip'' future expansion singularity are examined. Quantized scalar, spinor, and vector fields are found to strengthen the accelerating expansion of such models as they approach the expansion singularity.
description: 7 pages; REVTeX 4
SWOT Analysis of Agricultural Producers in the Supply Chain of Chinese Agro-products
Creators: name: Chen, Yuanyi
name: Zheng, Gang
name: Guo, Juan
name: Guo, Xin
name: Yao, Shibin
name: Chen, Yuanyi
name: Zheng, Gang
name: Guo, Juan
name: Guo, Xin
name: Yao, Shibin
Publisher: name: Unknown
Year: 2011
Subjects: subject: Agribusiness
subject: Supply chain of agricultural products
subject: Producers
subject: SWOT analysis
subject: China

description: On the basis of defining the producers in the supply chain of agricultural products, the SWOT analysis is adopted to analyze the advantages, disadvantages, opportunities and threats of producers in the supply chain of Chinese agricultural products. The paper analyzes the advantages of producers in the supply chain of agricultural products from three aspects including land resources, technology level of producers and input costs. The disadvantages of producers in the supply chain of agricultural products are analyzed from three aspects including scale level, mechanization and technology level and profit level. The opportunities of producers in the supply chain of agricultural products are analyzed from me aspects of laws, policies, Capitals and technologies. The threats confronted by the producers in the supply chain of agricultural products are analyzed from foreign producers, negotiation control of supply chain of agricultural chain, environmental protection and quality safety standard. On the basis of the analysis, the relevant suggestions on facilitating the interests of producers in the supply chain of Chinese agricultural products are put forward, including fully displaying the advantages of land resources; improving the knowledge and technology level of supply chain of agricultural production; establishing the alliances of producers of agricultural products to expand production scale; improving the quality of agricultural products to satisfy the relevant safety quality standard and environmental protection standard.
Translation Symmetry Breaking in the One-Component Plasma on the Cylinder
Creators: name: Samaj, L.
name: Wagner, J.
name: Kalinay, P.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The two-dimensional one-component plasma, i.e. the system of point-like charged particles embedded in a homogeneous neutralizing background, is studied on the surface of a cylinder of finite circumference, or equivalently in a semiperiodic strip of finite width. The model has been solved exactly by Choquard et al. at the free-fermion coupling $Γ=2$: in the thermodynamic limit of an infinitely long strip, the particle density turns out to be a nonconstant periodic function in space and the system exhibits long-range order of the Wigner-crystal type. The aim of this paper is to describe, qualitatively as well as quantitatively, the crystalline state for a larger set of couplings $Γ=2γ$ ($γ=1,2,...$ a positive integer) when the plasma is mappable onto a one-dimensional fermionic theory. The fermionic formalism, supplemented by some periodicity assumptions, reveals that the density profile results from a hierarchy of Gaussians with a uniform variance but with different amplitudes. The number and spatial positions of these Gaussians within an elementary cell depend on the particular value of $γ$. Analytic results are supported by the exact solution at $γ=1$ ($Γ=2$) and by exact finite-size calculations at $γ=2,3$.
Additional file 5 of Patient satisfaction and loyalty in Japanese primary care: a cross-sectional study
Creators: name: Tsunetaka Kijima
name: Matsushita, Akira
name: Kenju Akai
name: Hamano, Tsuyoshi
name: Takahashi, Satoshi
name: Fujiwara, Kazushige
name: Fujiwara, Yuko
name: Sato, Makoto
name: Nabika, Toru
name: Sundquist, Kristina
name: Sundquist, Jan
name: Ishibashi, Yutaka
name: Kumakura, Shunichi
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Science Policy

description: Additional file 5. Detailed description of SEM analysis for the primary care and patient loyalty.
Planes of satellites around simulated disc galaxies: I.- Finding high-quality planar configurations from positional information and their comparison to MW/M31 data
Creators: name: Santos-Santos, Isabel
name: Dominguez-Tenreiro, Rosa
name: Artal, Hector
name: Pedrosa, Susana E.
name: Bignone, Lucas
name: Martinez-Serrano, Francisco
name: Gomez-Flechoso, M. Angeles
name: Tissera, Patricia B.
name: Serna, Arturo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We address the 'plane of satellites problem' by studying planar configurations around two disc galaxies with no late major mergers, formed in zoom-in hydro-simulations. Due to the current lack of good quality kinematic data for M31 satellites, we use only positional information. So far, positional analyses of simulations are unable to find planes as thin and populated as the observed ones. Moreover, they miss systematicity and detail in the plane-searching techniques, as well as in the study of the properties and quality of planes, both in simulations or real data. To fill this gap, i) we extend the 4-galaxy-normal density plot method (Pawlowski et al. 2013) in a way designed to efficiently identify the best quality planes (i.e., thin and populated) without imposing extra constraints on their properties, and ii), we apply it for the first time to simulations. Using zoom-in simulations allows us to mimic MW/M31-like systems regarding the number of satellites involved as well as the galactic disc mass and morphology, in view of possible disc effects. At all timesteps analyzed in both simulations we find satellite planar configurations that are compatible, along given time intervals, with all the spatial characteristics of observed planes identified using the same methodology. However, the fraction of co-orbiting satellites within them is in general low, suggesting time-varying satellite membership. We conclude that high-quality positional planes of satellites are not infrequent in LCDM-formed disc galaxies with a quiet assembly history. Detecting kinematically-coherent, time-persistent planes demands considering the full six-dimensional phase-space information of satellites.
description: 26 pages, 13 figures, 2 tables. Accepted for publication in ApJ
Boundary Element Solution of Electromagnetic Fields for Non-Perfect Conductors at Low Frequencies and Thin Skin Depths
Creators: name: Gumerov, Nail A.
name: Adelman, Ross N.
name: Duraiswami, Ramani
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Numerical Analysis (math.NA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: A novel boundary element formulation for solving problems involving eddy currents in the thin skin depth approximation is developed. It is assumed that the time-harmonic magnetic field outside the scatterers can be described using the quasistatic approximation. A two-term asymptotic expansion with respect to a small parameter characterizing the skin depth is derived for the magnetic and electric fields outside and inside the scatterer, which can be extended to higher order terms if needed. The introduction of a special surface operator (the inverse surface gradient) allows the reduction of the problem complexity. A method to compute this operator is developed. The obtained formulation operates only with scalar quantities and requires computation of surface operators that are usual for boundary element (method of moments) solutions to the Laplace equation. The formulation can be accelerated using the fast multipole method. The method is much faster than solving the vector Maxwell equations. The obtained solutions are compared with the Mie solution for scattering from a sphere and the error of the solution is studied. Computations for much more complex shapes of different topologies, including for magnetic and electric field cages used in testing are also performed and discussed.
description: 24 pages, 5 Figures, Submited to IEEE Transactions on Magnetics
Quantum Geometries of $A_{2}$
Creators: name: Hailu, Girma
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We solve $\mathcal{N}=1$ supersymmetric $A_{2}$ type $U(N)\times U(N)$ matrix models obtained by deforming $\mathcal{N}=2$ with symmetric tree level superpotentials of any degree exactly in the planar limit. These theories can be geometrically engineered from string theories by wrapping D-branes over Calabi-Yau threefolds and we construct the corresponding exact quantum geometries.
description: 19 pages, more typos fixed and clarifying notes added
Elegy, ode, or panegyric? Practising agricultural economics in Australia, 1975-99
Creators: name: Godden, David P.
name: Godden, David P.
Publisher: name: Unknown
Year: 2001
Subjects: Teaching/Communication/Extension/Profession

description: Changes are investigated in the Australian agricultural economics profession, 1975–99, using a conventional microeconomics framework of supply and demand for agricultural economists. Aggregate exogenous factors such as changes in the agricultural and tertiary education sectors, and changes in beliefs about the proper role of government, have changed both supply and demand conditions for agricultural economists. The profession has responded by shifting its focus away from narrowly agricultural policy, especially marketing policy, towards areas of market failure such as environmental and natural resource issues.
Two Sides of the Same Coin: White-box and Black-box Attacks for Transfer Learning
Creators: name: Zhang, Yinghua
name: Song, Yangqiu
name: Liang, Jian
name: Bai, Kun
name: Yang, Qiang
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Transfer learning has become a common practice for training deep learning models with limited labeled data in a target domain. On the other hand, deep models are vulnerable to adversarial attacks. Though transfer learning has been widely applied, its effect on model robustness is unclear. To figure out this problem, we conduct extensive empirical evaluations to show that fine-tuning effectively enhances model robustness under white-box FGSM attacks. We also propose a black-box attack method for transfer learning models which attacks the target model with the adversarial examples produced by its source model. To systematically measure the effect of both white-box and black-box attacks, we propose a new metric to evaluate how transferable are the adversarial examples produced by a source model to a target model. Empirical results show that the adversarial examples are more transferable when fine-tuning is used than they are when the two networks are trained independently.
Additional file 10 of H3K27 modifiers regulate lifespan in C. elegans in a context-dependent manner
Creators: name: Guillermo, Abigail R. R.
name: Chocian, Karolina
name: Gavriil Gavriilidis
name: Vandamme, Julien
name: Salcini, Anna Elisabetta
name: Mellor, Jane
name: Woollard, Alison
Publisher: name: figshare
Year: 2021
Subjects: subject: Biochemistry
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Computational Biology

description: Additional file 10: Table S6. Statistical analysis of lifespan data relating to Fig. 4. Full statistical analysis of survival data from Fig. 4 (****p<0.0001,***p<0.001,**p<0.01,*p<0.05, ns=not significant). EV = empty vector control. Rep = repeat.
Coherence and complementarity based on modified generalized skew information
Creators: name: Wu, Zhaoqi
name: Zhang, Lin
name: Fei, Shao-Ming
name: Li-Jost, Xianqing
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We introduce modified generalized Wigner-Yanase-Dyson (MGWYD) skew information and modified weighted generalized Wigner-Yanase-Dyson (MWGWYD) skew information. By revisiting state-channel interaction based on MGWYD skew information, a family of coherence measures with respect to quantum channels is proposed. Furthermore, explicit analytical expressions of these coherence measures of qubit states are derived with respect to different quantum channels. Moreover, complementarity relations based on MGWYD skew information and MWGWYD skew information are also presented. Specifically, the conservation relations are investigated, while two interpretations of them including symmetry-asymmetry complementarity and wave-particle duality have been proposed.
description: 20pages
Inhomogeneity-induced second-order phase transitions in Potts model on hierarchical lattices
Creators: name: Timonin, P. N.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: The thermodynamics of the $q$-state Potts model with arbitrary $q$ on a class of hierarchical lattices is considered. Contrary to the case of the crystal lattices, it has always the second-order phase transitions. The analytical expressions fo the critical indexes are obtained, their dependencies on the structural lattice pararmeters are studied and the scailing relations among them are establised. The structural criterion of the inhomogeneity-induced transformation of the transition order is suggested. The application of the results to a description of critical phenomena in the dilute crystals and substances confined in porous media is discussed.
description: 9 pages, 2 figures
Additional file 1 of Purification and production of Plasmodium falciparum zygotes from in vitro culture using magnetic column and Percoll density gradient
Creators: name: Yaxian Zhou
name: Grieser, Alexis M.
name: Do, Julie
name: Itsara, Leslie S.
name: Vaughan, Ashley M.
name: Ghosh, Anil K.
Publisher: name: figshare
Year: 2020
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Molecular Biology
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1: Figure S1. Flow cytometry analysis on macrogametes and zygotes. Macrogamete populations were purified through MACS columns and Nycodenz gradients. Zygote populations were purified through MACS columns and Percoll gradients. 10,000 events were recorded for each sample. Control populations expressed GFP measured with a FITC-488 laser; test populations expressed both GFP and DyeCycle Orange DNA stain measured with Cy5.5 laser. The gating tree was set as follows: SSC-H vs. SSC-A (doublet exclusion); SSC-A vs. FSC-A (population of interest); GFP-A/Alexa Fluor 488-A vs. PE-Cy5-5-A (DNA content of GFP-expressing cells). a Representative histogram from one experiment displaying DNA content (PE-Cy5-5-A) through expression of Cy5.5 DNA stain, normalized to mode. Blue peak corresponds to macrogamete population, red peak corresponds to zygote population. b Chart displaying DNA content of zygote populations (darker bar) relative to macrogamete populations (lighter bar). Median PE-Cy5-5-A expression values from four separate experiments were averaged for macrogametes or zygotes and displayed as relative DNA content (n).
ANÁLISE DE CUSTOS DE PRESTAÇÃO DE SERVIÇOS DE COLHEITA FLORESTAL MECANIZADA
Creators: name: Souza, Marcos Antonio De
name: Pires, Charline Barbosa
name: Silveira, Fabiana Costa
name: Souza, Marcos Antonio De
name: Pires, Charline Barbosa
name: Silveira, Fabiana Costa
Publisher: name: Unknown
Year: 2010
Subjects: subject: Demand and Price Analysis
subject: Contabilidade florestal
subject: gestão de custos
subject: atividade florestal
subject: mecanização florestal

description: O estudo trata da classificação, mensuração e análise dos custos envolvidos na prestação de serviços de colheita florestal, mais especificamente das atividades de corte, descasque e extração de madeira para fabricação de celulose. Abordam-se as características do mercado desses serviços, bem como as fases do sistema de colheita florestal. Por meio da análise específica das atividades mecanizadas de corte, descasque e extração, são descritos os principais elementos de custos envolvidos na sua realização e a forma como esses se comportam em relação ao objeto de custeio. Propõe-se um modelo de apropriação dos custos incorridos que permite a mensuração do custo do m3 de madeira cortada, descascada e extraída mecanicamente, assim como a análise dos impactos da ineficiência da empresa e das características da floresta no custo final do serviço prestado e, conseqüentemente, no seu resultado. Trata-se de um estudo de caso único, desenvolvido durante o primeiro semestre de 2006, que utilizou como fontes de evidências a observação direta, entrevistas, documentações e registros em arquivos. Com base nos dados conclui-se que o modelo apresentado pode auxiliar na gestão econômica das empresas, oferecendo subsídios para o processo decisório sobre custos, controle de produtividade e negociação do preço de venda.
A Simple Scheme to Entangle Distant Qubits from a Mixed State via an Entanglement Mediator
Creators: name: Yuasa, Kazuya
name: Nakazato, Hiromichi
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A simple scheme to prepare an entanglement between two separated qubits from a given mixed state is proposed. A single qubit (entanglement mediator) is repeatedly made to interact locally and consecutively with the two qubits through rotating-wave couplings and is then measured. It is shown that we need to repeat this kind of process only three times to establish a maximally entangled state directly from an arbitrary initial mixed state, with no need to prepare the state of the qubits in advance or to rearrange the setup step by step. Furthermore, the maximum yield realizable with this scheme is compatible with the maximum entanglement, provided that the coupling constants are properly tuned.
description: 9 pages, 3 figures; the version accepted for publication (with the new title)
Revisiting the spectral and timing properties of 4U 1909+07 with NuSTAR and Astrosat
Creators: name: Jaisawal, Gaurava K.
name: Naik, Sachindra
name: Ho, Wynn C. G.
name: Kumari, Neeraj
name: Epili, Prahlad
name: Vasilopoulos, Georgios
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present the results obtained from the analysis of high mass X-ray binary pulsar 4U 1909+07 using NuSTAR and Astrosat observations in 2015 and 2017 July, respectively. X-ray pulsations at $\approx$604 s are clearly detected in our study. Based on the long term spin-frequency evolution, the source is found to spun up in the last 17 years. We observed a strongly energy-dependent pulse profile that evolved from a complex broad structure in soft X-rays into a profile with a narrow emission peak followed by a plateau in energy ranges above 20 keV. This behaviour ensured a positive correlation between the energy and pulse fraction. The pulse profile morphology and its energy-evolution are almost similar during both the observations, suggesting a persistent emission geometry of the pulsar over time. The broadband energy spectrum of the pulsar is approximated by an absorbed high energy exponential cutoff power law model with iron emission lines. In contrast to the previous report, we found no statistical evidence for the presence of cyclotron absorption features in the X-ray spectra. We performed phase-resolved spectroscopy by using data from the NuSTAR observation. Our results showed a clear signature of absorbing material at certain pulse-phases of the pulsar. These findings are discussed in terms of stellar wind distribution and its effect on the beam geometry of this wind-fed accreting neutron star. We also reviewed the subsonic quasi-spherical accretion theory and its implication on the magnetic field of 4U 1909+07 depending on the global spin-up rate.
description: 9 pages, 10 figures; Accepted for publication in MNRAS
VIABILIDADE FINANCEIRA DA PRODUÇÃO DE FEIJÃO EM SISTEMA AUTOMATIZADO DE IRRIGAÇÃO POR MINIASPERSÃO
Creators: name: Silva, Eduardo Luis Da
name: Ferreira, Marco Aurelio Marques
name: Monteiro, Doraliza Auxiliadora Abranches
name: Silva, Eduardo Luis Da
name: Ferreira, Marco Aurelio Marques
name: Monteiro, Doraliza Auxiliadora Abranches
Publisher: name: Unknown
Year: 2011
Subjects: subject: Agribusiness
subject: Investimento
subject: agronegócios
subject: risco
subject: feijão
subject: automação

description: Objetivou-se, neste trabalho, verificar a viabilidade financeira da implementação de um sistema automatizado de irrigação por miniaspersão na cultura do feijão. O trabalho toma como referência a teoria de análise financeira de investimentos, considerandose a abordagem determinística e probabilística. Os dados relativos à produtividade do feijoeiro, ao sistema de irrigação por miniaspersão, bem como os coeficientes técnicos, os custos de produção e as receitas de venda foram baseados em experimentos e coletas de dados realizados por pesquisadores de um centro de pesquisa do estado de Minas Gerais. De acordo com os resultados, conclui-se que nos cenários determinístico e probabilístico, o projeto de irrigação por miniaspersão na cultura de feijão apresentase viável para os dados de produtividade baseados em experimento, enquanto para os dados de produtividade média dos produtores de MG, o projeto não se mostrou viável. O projeto é consideravelmente sensível às alterações nas variáveis de risco, a exemplo do preço dos fatores de produção e do custo de oportunidade do capital. Dentre esses fatores, maior sensibilidade foi observada nas variações de preço do feijão.
Concept Drift Detection via Equal Intensity k-means Space Partitioning
Creators: name: Liu, Anjin
name: Lu, Jie
name: Zhang, Guangquan
Publisher: name: arXiv
Year: 2020
Subjects: subject: Machine Learning (cs.LG)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Data stream poses additional challenges to statistical classification tasks because distributions of the training and target samples may differ as time passes. Such distribution change in streaming data is called concept drift. Numerous histogram-based distribution change detection methods have been proposed to detect drift. Most histograms are developed on grid-based or tree-based space partitioning algorithms which makes the space partitions arbitrary, unexplainable, and may cause drift blind-spots. There is a need to improve the drift detection accuracy for histogram-based methods with the unsupervised setting. To address this problem, we propose a cluster-based histogram, called equal intensity k-means space partitioning (EI-kMeans). In addition, a heuristic method to improve the sensitivity of drift detection is introduced. The fundamental idea of improving the sensitivity is to minimize the risk of creating partitions in distribution offset regions. Pearson's chi-square test is used as the statistical hypothesis test so that the test statistics remain independent of the sample distribution. The number of bins and their shapes, which strongly influence the ability to detect drift, are determined dynamically from the sample based on an asymptotic constraint in the chi-square test. Accordingly, three algorithms are developed to implement concept drift detection, including a greedy centroids initialization algorithm, a cluster amplify-shrink algorithm, and a drift detection algorithm. For drift adaptation, we recommend retraining the learner if a drift is detected. The results of experiments on synthetic and real-world datasets demonstrate the advantages of EI-kMeans and show its efficacy in detecting concept drift.
Additional file 2 of Purification and production of Plasmodium falciparum zygotes from in vitro culture using magnetic column and Percoll density gradient
Creators: name: Yaxian Zhou
name: Grieser, Alexis M.
name: Do, Julie
name: Itsara, Leslie S.
name: Vaughan, Ashley M.
name: Ghosh, Anil K.
Publisher: name: figshare
Year: 2020
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Molecular Biology
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Additional file 2: Figure S2. Percoll gradients of other purification method. a Accudenz gradient after 1st MACS column purification. b Percoll gradient without using MACS purification. c Percoll gradient after 1 MACS column. U upper band, M middle band, L lower band.
Submerged identitites : German Canadian immigrants (1945-1960)
Creators: name: Paul, Jeanette Katharine
Publisher: name: University of British Columbia
Year: 2009

description: This project explores the history of Germans in Canada: their experiences prior to, during, and after the Second World War. The primary focus of this project will be on the construction of the German Canadian identity in the years after the Second World War. I contend that German Canadian immigrants from the post-war years experienced discrimination and negativity which forced them to submerge their true identities. This submersion has left us with a weak German Canadian culture today-it is one based on the outdated notion of "oom-pa-pa" bands and Schuhplattler dancers. As this culture-and the people who perpetuate it-die off, we are left with a German Canadian culture and identity that is more and more Canadian. This project is primarily composed of a literature review and will use Erving GofFman's theory on stigma and spoiled identities.
Small maximal spaces of non-invertible matrices
Creators: name: Draisma, Jan
Publisher: name: arXiv
Year: 2004
Subjects: subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 15A30, 17B10

description: A vector space A of matrices is called rank-critical if any vector space that properly contains A has a strictly higher generic rank. I present a sufficient condition for A to be rank-critical, and apply this condition to prove that certain Lie algebra representations have rank-critical images. This contruction yields, for infinitely many n, an 8-dimensional space of n-times-n matrices that is maximal singular (= rank-critical of rank n-1), while--to the best of my knowledge--the minimal dimension of such a space was hitherto believed to grow with n. As another application, I prove that for any semisimple Lie algebra g, the space ad(g) is a rank-critical subspace of End(g).
description: 11 pages in latex
title: Hazy Al₂O₃-FTO Nanocomposites: A Comparative Study with FTO-Based Nanocomposites Integrating ZnO and S:TiO₂ Nanostructures
Creators: name: Zhang, Shan-Ting
name: Vitrant, Guy
name: Pernot, Etienne
name: Jiménez, Carmen
name: Muñoz-Rojas, David
name: Bellet, Daniel
Publisher: name: MDPI
Year: 2024

description: In this study, we report the use of Al₂O₃ nanoparticles in combination with fluorine doped tin oxide (F:SnO₂, aka FTO) thin films to form hazy Al₂O₃-FTO nanocomposites. In comparison to previously reported FTO-based nanocomposites integrating ZnO and sulfur doped TiO₂ (S:TiO₂) nanoparticles (i.e., ZnO-FTO and S:TiO₂-FTO nanocomposites), the newly developed Al₂O₃-FTO nanocomposites show medium haze factor HT of about 30%, while they exhibit the least loss in total transmittance Ttot. In addition, Al₂O₃-FTO nanocomposites present a low fraction of large-sized nanoparticle agglomerates with equivalent radius req > 1 μm; effectively 90% of the nanoparticle agglomerates show req < 750 nm. The smaller feature size in Al₂O₃-FTO nanocomposites, as compared to ZnO-FTO and S:TiO₂-FTO nanocomposites, makes them more suitable for applications that are sensitive to roughness and large-sized features. With the help of a simple optical model developed in this work, we have simulated the optical scattering by a single nanoparticle agglomerate characterized by bottom radius r₀, top radius r₁, and height h. It is found that r₀ is the main factor affecting the HT(λ), which indicates that the haze factor of Al₂O₃-FTO and related FTO nanocomposites is mainly determined by the total surface coverage of all the nanoparticle agglomerates present.
Additional file 11 of H3K27 modifiers regulate lifespan in C. elegans in a context-dependent manner
Creators: name: Guillermo, Abigail R. R.
name: Chocian, Karolina
name: Gavriil Gavriilidis
name: Vandamme, Julien
name: Salcini, Anna Elisabetta
name: Mellor, Jane
name: Woollard, Alison
Publisher: name: figshare
Year: 2021
Subjects: subject: Biochemistry
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Computational Biology

description: Additional file 11: Table S7. Statistical analysis of lifespan data relating to Fig. 5. Full statistical analysis of lifespan data from Fig. 5 (****p<0.0001,***p<0.001,**p<0.01,*p<0.05, ns=not significant). #consistent with data reported in [14]. EV = empty vector control. Rep = repeat.
The Gregory-Laflamme instability for the D2-D0 bound state
Creators: name: Gubser, Steven S.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The D2-D0 bound state exhibits a Gregory-Laflamme instability when it is sufficiently non-extremal. If there are no D0-branes, the requisite non-extremality is finite. When most of the extremal mass comes from D0-branes, the requisite non-extremality is very small. The location of the threshhold for the instability is determined using a local thermodynamic analysis which is then checked against a numerical analysis of the linearized equations of motion. The thermodynamic analysis reveals an instability of non-commutative field theory at finite temperature, which may occur only at very long wavelengths as the decoupling limit is approached.
description: 19 pages, Latex2e. v2: two refs added. v3: clearer exposition in section 4
Some properties of Zumkeller numbers and $k$-layered numbers
Creators: name: Mahanta, Pankaj Jyoti
name: Saikia, Manjil P.
name: Yaqubi, Daniel
Publisher: name: arXiv
Year: 2020
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11A25, 11B75, 11D99

description: Generalizing the concept of a perfect number is a Zumkeller or integer perfect number that was introduced by Zumkeller in 2003. The positive integer $n$ is a Zumkeller number if its divisors can be partitioned into two sets with the same sum, which will be $σ(n)/2$. Generalizing even further, we call $n$ a $k$-layered number if its divisors can be partitioned into $k$ sets with equal sum. In this paper, we completely characterize Zumkeller numbers with two distinct prime factors and give some bounds for prime factorization in case of Zumkeller numbers with more than two distinct prime factors. We also characterize $k$-layered numbers with two distinct prime factors and even $k$-layered numbers with more than two distinct odd prime factors. Some other results concerning these numbers and their relationship with practical numbers and Harmonic mean numbers are also discussed.
description: 14 pages, accepted version, to appear in the Journal of Number Theory
Mettre les choix scientifiques et techniques en débat : l'expérience d'"évaluation technologique interactive" des recherches sur les OGM-vigne à l'INRA
Creators: name: Joly, Pierre-Benoit
name: Marris, Claire
name: Bertrand, Anne
name: Joly, Pierre-Benoit
name: Marris, Claire
name: Bertrand, Anne
Publisher: name: Unknown
Year: 2004
Subjects: Research and Development/Tech Change/Emerging Technologies

description: En tant que sources d’innovations, les recherches de l’INRA ont des implications non seulement économiques, mais aussi sociales, politiques et éthiques. Elles peuvent éventuellement apporter des bénéfices mais comportent aussi des risques. Les controverses sur les innovations ont conduit l’INRA à mettre en œuvre des dispositifs qui permettent d’ouvrir la délibération sur l’orientation des programmes de recherche en associant les acteurs concernés de près ou de loin par les applications de ces recherches. C’est dans ce cadre qu’a été initiée en mai 2001 une expérience pilote d’évaluation technologique interactive sur les recherches sur les OGM-vigne.
Observation of magnetic domains in uniaxial magnets via small-angle electron diffraction and Foucault imaging
Creators: name: Nakajima, Hiroshi
name: Kotani, Atsuhiro
name: Harada, Ken
name: Mori, Shigeo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Observation of magnetic domains is important in understanding the magnetic properties of magnetic materials and devices. In this study, we report that the magnetic domains of M-type hexaferrites with uniaxial anisotropy can be visualized via small-angle electron diffraction and Foucault imaging. The position of the diffraction pattern spots has the same period as that of magnetic domains in a Sc-substituted hexaferrite (BaFe$_{12-x-δ}$Sc$_x$Mg$_δ$O$_{19}$). Conversely, the spots were observed four times longer than the period of magnetic domains in hexaferrite without substitution (BaFe$_{12}$O$_{19}$), demonstrating the long-range order of the Bloch walls. When the specimen was tilted, the magnetic deflection effect, as well as the periodic spots of magnetic domains, occurred. Thus, we were able to visualize the magnetic domains with different magnetization directions and domain orientations by selecting deflection spots. The results indicate that the technique utilized in this study is useful in observing the magnetic materials with uniaxial anisotropy.
description: 17 pages, 6 figures
Re-reading Queen Sohye’s Naehun
Creators: name: Park, Si Nae
Publisher: name: University of British Columbia
Year: 2009

description: Previous scholarship on the Naehun (Instruction for the Inner Sphere) has often understood the Naehun as its author Queen Sohye's attempt at forcefully imposing the notion of women's absolute submission to men and that the text was written exclusively for a female audience. These analyses, thought not entirely wrong, appear to be based on certain misrepresentative portions of the text and is closely related to the modern day valorization of King Sejong in his creation of the Korean vernacular script, the hunmin chong'um (Correct Sound for the Instruction of the People). Therefore, in this thesis, I propose a way of re-reading Queen Sohye's Naehun by contesting the traditional understandings about the text's intended audience and its theme and by de-mythologizing the nature of the vernacular translation ipnhae) portions in the Naehun. I then offer an intertexual analysis of Sohye's Naehun and Ban Zhao's Ntijie (Precepts for My Daughters) in order to argue that the underlying philosophy in the Naehun is the notion of Neo-Confucian universality ("sagehood for all humankind") and the text's initial intended audience included both men and women. I propose that the most emphasized virtue of women in the Naehun is intellect, moral rectitude, and capability to act as counselors and remonstrators to their men. Such portrayal of women suggests a subversive notion of a "blurred" demarcation of the inner and the outer spheres. Bearing in mind this "subversive" idea in the light of the historical context of Queen Chonghiii regency, one can read Sohye's Naehun as an argument intended to subdue any brewing dissatisfaction against Chonghui's leadership among male Confucian scholars in the court.
Sasaki-Einstein Twist of Kerr-AdS Black Holes
Creators: name: Hashimoto, Yoshitake
name: Sakaguchi, Makoto
name: Yasui, Yukinori
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider Kerr-AdS black holes with equal angular momenta in arbitrary odd spacetime dimensions \ge 5. Twisting the Killing vector fields of the black holes, we reproduce the compact Sasaki-Einstein manifolds constructed by Gauntlett, Martelli, Sparks and Waldram. We also discuss an implication of the twist in string theory and M-theory.
description: 7 pages; Added the Page limit metric and extra parameter \delta shown to be trivial
NorKorr - Norwegian Correspondences and Linked Open Data
Creators: name: Rockenberger, Annika
name: Wiger, Ellen Nessheim
name: Witting, Mette Refslund
name: Bøe, Hilde
name: Thor, Evelyn Irene
name: Wolden, Ove
name: Paasche, Marianne
name: Søndena, Ola
name: Conzett, Philipp
Publisher: name: Zenodo
Year: 2019
Subjects: Linked Open Data
Correspondence
Letters
Cultural Heritage Data
Norway
GLAM

description: The project Norwegian Correspondences aims to link individual letters and other correspondence media not only to each other but to correspondences across all of Norway, Europe and beyond. It uses the CorrespSearch infrastructure, which employs Linked Open Data standards. Correspondence metadata from digitized letters, digital as well as printed scholarly editions are delivered in the Correspondence Metatdata Interchange Format (CMIF). Via the CorrespSearch web interface, data can be easily searched or queried via an open API. Poster presented at the DHN2019 conference in Copenhagen, Denmark. The full paper can be accessed here: http://ceur-ws.org/Vol-2364/33_paper.pdf. About the project: https://github.com/norkorr
Discrete-symmetry vortices as angular Bloch modes
Creators: name: Ferrando, Albert
Publisher: name: arXiv
Year: 2004
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Other Condensed Matter (cond-mat.other)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The most general form for symmetric modes of nonlinear discrete-symmetry systems with nonlinearity depending on the modulus of the field is presented. Vortex solutions are demonstrated to behave as Bloch modes characterized by an angular Bloch momentum associated to a periodic variable, periodicity being fixed by the order of discrete point-symmetry of the system. The concept of angular Bloch momentum is thus introduced to generalize the usual definition of angular momentum to cases where O(2) -symmetry no longer holds. The conservation of angular Bloch momentum during propagation is demonstrated.
description: 4 pages, 2 figures
Une mesure de l'effet de la délégation sur le prix de l'eau potable en France
Creators: name: Carpentier, Alain
name: Nauges, Celine
name: Reynaud, Arnaud
name: Thomas, Alban
name: Carpentier, Alain
name: Nauges, Celine
name: Reynaud, Arnaud
name: Thomas, Alban
Publisher: name: Unknown
Year: 2004
Subjects: Environmental Economics and Policy
Resource /Energy Economics and Policy

description: Un peu plus de la moitié des communes françaises délègue actuellement la gestion du service de l'eau à des entreprises privées. L'incidence de ce choix du mode de gestion sur le coût du service et l'ampleur des différences observées entre modes de gestion privée ou publique sont des questions d'actualité. Une évaluation des effets sur le niveau des prix de la délégation des services de l'eau potable en France montre que les conditions d'exploitation de ces services permettent d'expliquer en grande partie l'écart de prix existant entre la moyenne des prix pratiqués par les délégataires privés et celle constatée pour les régies en 1998. Ces résultats confortent l'idée que les communes ont tendance à choisir la gestion privée si elles font face à des conditions d'exploitation difficiles.