cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
An associative network with spatially organized connectivity
Creators: name: Roudi, Yasser
name: Treves, Alessandro
Publisher: name: arXiv
Year: 2004
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We investigate the properties of an autoassociative network of threshold-linear units whose synaptic connectivity is spatially structured and asymmetric. Since the methods of equilibrium statistical mechanics cannot be applied to such a network due to the lack of a Hamiltonian, we approach the problem through a signal-to-noise analysis, that we adapt to spatially organized networks. The conditions are analyzed for the appearance of stable, spatially non-uniform profiles of activity with large overlaps with one of the stored patterns. It is also shown, with simulations and analytic results, that the storage capacity does not decrease much when the connectivity of the network becomes short range. In addition, the method used here enables us to calculate exactly the storage capacity of a randomly connected network with arbitrary degree of dilution.
description: 27 pages, 6 figures; Accepted for publication in JSTAT
Vulnerability of cocoa-based agroforestry systemsto climate change in West Africa
Creators: name: Ariza Salamanca, Antonio Jesús
name: Navarro-Cerrillo, Rafael Mª
name: Quero-Pérez, José L.
name: Gallardo, Belinda
name: Crozier, Jayne
name: Stirling, Clare
name: de Sousa, Kauê
name: González-Moreno, Pablo
Publisher: name: Zenodo
Year: 2023

description: The rise in temperature and increasing frequency of severe droughts predicted for the near future will make cocoa plantations more vulnerable, ultimately affecting their vigour, yield and long-term persistence. As a result, some important cocoa cultivation areas in West Africa in the 20th century will have essentially become unsuitable for growing cocoa by the near future. This research work has focused on the vulnerability of cocoa potential distribution under climate change as well as the potential impacts of climate change on the habitat suitability for shade tree species commonly used in cocoa-based agroforestry systems across West Africa. Finally, this information was used to estimate the potential of C-AFS across different scenarios of climate change and discuss opportunities and possible risks of cocoa expansion into climatically less vulnerable areas.
Methods: To characterize patterns of habitat suitability at regional level, we compiled presence location points of selected tree species from the Global Biodiversity information Facility (GBIF). We modelled current and future suitable habitats for 38 tree species (including cocoa). Suitability modelling and mapping of all species were done using a consensus method for species distribution modelling (SDM). As environmental predictors in the models, edaphic and climatic variables were used. We considered seven climatic scenarios for 2060 using two contrasting projections of atmospheric CO2 concentration.
Results: The prediction accuracy of the species distribution models for cocoa and shade trees showed values between 0.69 and 0.99. The final ensemble model that was built using all the data had an AUC range from 0.84 to 0.99 for the different species, while TSS value range from 0.66 to 0.96 for the ensemble models. The sum of the contribution rate of the climatic variables reached 85% and that of the soil factors reached 15%. The results show an increase of the potential habitat suitability for Theobroma cacao compared to the current occurrence in West Africa. However, the model projections show a reduction of the highly suitable current areas by 2060. In this sense, the climatic suitability was found to shift from west to east across the coastal border. Regarding shade trees, the distribution range of 49% of the shade tree species will become unsuitable by 2040 in West Africa, and 60% by 2060.
Conclusions: Our results highlight the importance of transforming cocoa-based agroforestry systems by changing shade tree species composition to adapt this production systems for expected climate change scenarios.
Keywords: Habitat suitability, species richness, climate change adaptation, species distribution
Lemon Effect of Green Agricultural Products and its Marketing Strategy
Creators: name: Zhang, Xiao-Feng
name: Jin, Qi-Wen
name: Du, Yang
name: Zhou, Xiao-Yan
name: Han, Cai-Xin
name: Li, Meng-Meng
name: Zhang, Xiao-Feng
name: Jin, Qi-Wen
name: Du, Yang
name: Zhou, Xiao-Yan
name: Han, Cai-Xin
name: Li, Meng-Meng
Publisher: name: Unknown
Year: 2010
Subjects: subject: Agribusiness
subject: Green agricultural products
subject: Lemon effect
subject: Marketing
subject: FOS: Economics and business
subject: Avoid
subject: China

description: The paper introduces the lemon effect of green agricultural products, analyzes the formation reasons of the lemon effect of green agricultural products and summarizes problems brought by the effect, such as malicious deception and high priced. The paper proposes countermeasures to avoid the lemon effect of green agricultural products from a perspective of marketing. The first is to strengthen the quality supervision of green agricultural products, upgrade the quality of products, and build up branded products. The government should foster the main body of the products and guide the main body to realize the importance of brand construction and management. The second is to construct a sales channel system of green agricultural products, making use of the trading center of modern green agricultural products to sell products, developing a long term partnership with processing industries, big supermarket and restaurants, making use of internet and selling products online and offline. The third is to propagate the products. Make a good use of advertisement, personal sales, propagation and public relations to accelerate the healthy development of green agricultural market.
Hecke operators on period functions for the full modular group
Creators: name: Mühlenbruch, Tobias
Publisher: name: arXiv
Year: 2004
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11F25; 11F67

description: Matrix representations of Hecke operators on classical holomorphical cusp forms and corresponding period polynomials are well known. In this article we define Hecke operators on period functions and show that they correspond to the Hecke operators on Maass cusp forms. Moreover we give an explicite general compatibility criterion for formal sums of matrices to represent Hecke operators ob period functions. An explicite example with only nonnegative entries in the matrices is constructed.
description: corrected Version, 18 pages
Webpage Segmentation for Extracting Images and Their Surrounding Contextual Information
Creators: name: Fauzi, F.
name: Long, H. J.
name: Belkhatir, M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Multimedia (cs.MM)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Information Retrieval (cs.IR)
subject: FOS: Computer and information sciences

description: Web images come in hand with valuable contextual information. Although this information has long been mined for various uses such as image annotation, clustering of images, inference of image semantic content, etc., insufficient attention has been given to address issues in mining this contextual information. In this paper, we propose a webpage segmentation algorithm targeting the extraction of web images and their contextual information based on their characteristics as they appear on webpages. We conducted a user study to obtain a human-labeled dataset to validate the effectiveness of our method and experiments demonstrated that our method can achieve better results compared to an existing segmentation algorithm.
description: arXiv admin note: substantial text overlap with arXiv:2005.02156
SU(3)_{c} X SU(3)_{L} X U(1)_{X} models for βarbitrary and families with mirror fermions
Creators: name: Diaz, Rodolfo A.
name: Martinez, R.
name: Ochoa, F.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A detailed and general study of the fermionic structure of the 331 models with βarbitrary is carried out based on the criterion of cancellation of anomalies. We consider models with an arbitrary number of lepton and quark generations, but requiring to associate only one lepton and one quark SU(3) _{L} multiplet for each generation, and at most one right-handed singlet per each left-handed fermion. We see that the number of quark left-handed multiplets must be three times the number of leptonic left-handed multiplets. Furthermore, we consider a model with four families and β=-1/\sqrt{3} where the additional family corresponds to a mirror fermion of the third generation of the Standard Model. We also show how to generate ansatzs about the mass matrices of the fermions according to the phenomenology. In particular, it is possible to get a natural fit for the neutrino hierarchical masses and mixing angles. Moreover, by means of the mixing between the third quark family and its mirror fermion, a possible solution for the A_{FB}^{b} discrepancy is obtained.
description: 32 pages, 15 tables, LaTeX2e. A new section added, introduction and conclusions extended. Version to appear in Phys. Rev. D
Paths for the Coordinated Development of Rural Economy and Environment in Economically Underdeveloped Areas—A Case of Huaian, China
Creators: name: Tao, Ai-Xiang
name: Tao, Ai-Xiang
Publisher: name: Unknown
Year: 2010
Subjects: subject: Agribusiness
subject: Economically underdeveloped areas
subject: Rural environment
subject: Circular economy
subject: Huaian city
subject: China

description: Taking Huaian as an example, the rural economic and environmental problems in economically underdeveloped areas are expounded. The results show that rural areas in economically underdeveloped areas confront with lagged economic development, serious environmental pollution and scarce shortage of equipments for treating environmental pollution. The causes of these economic and environmental problems are analyzed, including inadequate fiscal support from the local government; unscientific system for assessing government officers’ performances; backward ideas in environmental protection and imperfect laws and regulations on environmental protection. Based on these causes, the strategy of employing the circular economy to promote the coordinated development of rural environment and economy in economically underdeveloped areas is put forward. The strategy covers transforming the way of agricultural production; adjusting agricultural production structure; positively collecting funds and increasing the input on handling rural environmental problems; strengthening the efforts on promotion and education , and forming the healthy habits of consumption; enforcing supervision and establishing a professional administration team for protecting rural environment; laying stress on rural technological innovation and strengthening the force of expansion; accelerating the path of industrialization and promoting the industrialization of villages and towns vigorously.
Additional file 1 of Identification of carnivore kill sites is improved by verified accelerometer data
Creators: name: Petroelje, Tyler R.
name: Belant, Jerrold L.
name: Beyer, Dean E.
name: Svoboda, Nathan J.
Publisher: name: figshare
Year: 2020
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified

description: Additional file 1. Pairwise comparisons using the Tukey–Kramer method for unequal sample sizes of accelerometer values (unit-less, 0–255) categorized by observed behavior groups of collared captive carnivores including two American black bears (Ursus americanus), a bobcat (Lynx rufus), and two wolves (Canis spp.). Included are the difference in mean accelerometer value, lower and upper 95% confidence intervals (CI) and adjusted P values, Upper Peninsula of Michigan, USA, 2011 and 2013.
Research on the Consumption Function of Rural Residents in Hunan Province
Creators: name: Chen, Hui-Min
name: Chen, Hui-Min
Publisher: name: Unknown
Year: 2010
Subjects: subject: Agribusiness
subject: Rural residents
subject: Consumption function
subject: Marginal propensity of consumption
subject: Hunan Province
subject: China

description: Based on literature review, according to relevant consumption data in Hunan Statistical Yearbook and China Statistical Yearbook during 1978-2009, the thesis selects three indexes involving the average income per rural resident, per capita living expenses of rural residents and per capita savings to conduct the unit root and co-integration test on the consumption and net income per rural residents in Hunan Province by adopting the generalized difference method and EVIEWS6.0, then according to the Modigliani Hypothesis of Consumption, Duesenberry Hypothesis of Consumption and Keynes Absolute Income Hypothesis, the thesis makes a fitting of Hunan consumption function model, aiming to find out the consumption function model suitable to Hunan Province. The results show that, Keynesian consumption function based on Absolute Income Hypothesis passes the statistical test and econometric test, while the consumption function model based on Relative Income Hypothesis and that based on Life Cycle Hypothesis do not, which proves that the consumption function model based on Absolute Income Hypothesis is better suited for describing the relations between rural consumption and income in Hunan Province. Taking into account the low marginal propensity of consumption of the rural residents in Hunan Province, the thesis proposes to expand consumption demand of rural residents: firstly, developing characteristic economy and improving the income level of rural residents; secondly, perfecting the social security system in rural areas and maintaining the consumption confidence of rural residents; thirdly, ameliorating the circulation system.
Strange matter in rotating compact stars
Creators: name: Banik, Sarmistha
name: Hanauske, Matthias
name: Bandyopadhyay, Debades
Publisher: name: arXiv
Year: 2004
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We have constructed equations of state involving various exotic forms of matter with large strangeness fraction such as hyperon matter, Bose-Einstein condensates of antikaons and strange quark matter. First order phase transitions from hadronic to antikaon condensed and quark matter are considered here. The hadronic phase is described by the relativistic field theoretical model. Later those equations of state are exploited to investigate models of uniformly rotating compact stars. The effect of rotation on the third family branch for the equation of state involving only antikaon condensates is investigated. We also discuss the back bending phenomenon due to a first order phase transition from $K^-$ condensed to quark matter.
description: 8 pages, 4 figures; Plenary talk delivered at Strangeness in Quark Matter (SQM) 2004 held in Cape Town, South Africa from 15-20 September; Accepted for publication in the proceedings in Journal of Physics G
Searching Multi-Rate and Multi-Modal Temporal Enhanced Networks for Gesture Recognition
Creators: name: Yu, Zitong
name: Zhou, Benjia
name: Wan, Jun
name: Wang, Pichao
name: Chen, Haoyu
name: Liu, Xin
name: Li, Stan Z.
name: Zhao, Guoying
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Gesture recognition has attracted considerable attention owing to its great potential in applications. Although the great progress has been made recently in multi-modal learning methods, existing methods still lack effective integration to fully explore synergies among spatio-temporal modalities effectively for gesture recognition. The problems are partially due to the fact that the existing manually designed network architectures have low efficiency in the joint learning of multi-modalities. In this paper, we propose the first neural architecture search (NAS)-based method for RGB-D gesture recognition. The proposed method includes two key components: 1) enhanced temporal representation via the proposed 3D Central Difference Convolution (3D-CDC) family, which is able to capture rich temporal context via aggregating temporal difference information; and 2) optimized backbones for multi-sampling-rate branches and lateral connections among varied modalities. The resultant multi-modal multi-rate network provides a new perspective to understand the relationship between RGB and depth modalities and their temporal dynamics. Comprehensive experiments are performed on three benchmark datasets (IsoGD, NvGesture, and EgoGesture), demonstrating the state-of-the-art performance in both single- and multi-modality settings.The code is available at https://github.com/ZitongYu/3DCDC-NAS
description: Submitted to IEEE Transactions on Image Processing
Additional file 2 of Socio-demographic and economic inequalities in modern contraception in 11 low- and middle-income countries: an analysis of the PMA2020 surveys
Creators: name: Blumenberg, Cauane
name: Franciele Hellwig
name: Ewerling, Fernanda
name: Aluísio J. D. Barros
Publisher: name: figshare
Year: 2020
Subjects: 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: Science Policy

description: Additional file 2. Detailed information about slope index of inequality (SII) according to subtype of modern contraceptive (mCPR) by wealth quintiles, educational level and age. Table containing detailed information on the slope index of inequality for each subtype of modern contraceptive by wealth quintiles, educational level and age.
Benefit Evaluation on Land Comprehensive Consolidation in the Small Towns —A Case of Daxing District, Beijing, China
Creators: name: Jiang, Cui-Hong
name: Li, Hong
name: Jia, Jin-Song
name: Jiang, Cui-Hong
name: Li, Hong
name: Jia, Jin-Song
Publisher: name: Unknown
Year: 2010
Subjects: subject: Agribusiness
subject: Small town
subject: Land comprehensive consolidation
subject: Benefit evaluation
subject: China
subject: Index system

description: Taking Daxing District, Beijing, China as a example, benefit evaluation index system of small-town land comprehensive consolidation is established from four aspects of resource benefit, economic benefit, social benefit and ecological benefit. Weight of evaluation index is determined by analytic hierarchy process. After the standardized treatment on the original value index, comprehensive index method is adopted to evaluate the land comprehensive consolidation benefits in 14 towns of Daxing District in the year 2005, combining with the index weight determined by analytic hierarchy process. Evaluation result shows that areas having significant effects are Yizhuang Town, Xihongmen Town, Yinghai Town, and Jiugong Town, which are concentrated in rural-urban continuum with significant location advantages and good economic and infrastructure status. Areas having good effects are Changziying Town, Huangcun Town, Panggezhuang Town, Beizangcun Town, and Yufa Town, which are located along Yongding River, with abundant farmland resources and good ecological environment. Areas having general effects are Weishan Town, Qingyundian Town, and Anding Town, with insignificant location advantages. Areas with no significant effects are Lixian Town and Caiyu Town, with relatively poor location, resource, and economic development status.
Protection of Collective Rights of Rural Members in the Process of Land Transfer under Shareholding Cooperative Systems
Creators: name: Chen, Yan
name: Ruan, Min
name: Qiang, Chang-Wen
name: Chen, Yan
name: Ruan, Min
name: Qiang, Chang-Wen
Publisher: name: Unknown
Year: 2010
Subjects: subject: Agribusiness
subject: Shareholding Cooperative Systems， Land Transfer ，Collective Tights of Members， Guarantee， China

description: According to the legal definitions of land transfer under shareholding cooperative systems, rural groups, collective rights of members, and this paper discloses the necessity of protecting the collective rights of members. In terms of qualification definition of members, rights of fetus, married daughters and sons in law cannot be guaranteed. In terms of rights protection, partial rights cannot be assured, power of personal stake in the collective members is imperfect which results in inadequate, unbalanced, shaky and unpunctuated benefits. Based on objective and subjective causes, the democratic management rights of members in land transfer process have been weakened or even deprived, the protection of the basic life is hard to realize. The paper proposes that it is necessary to build the social protection mechanisms of rural land shareholding cooperative systems. The first is to treat those members that own land, attending the shareholding cooperation but having not taken part in the land transfer procession as the protection objects. The second is in the procession of land transfer, making it clear the compensation standards of land transfer, establishing the intermediate agencies of land transfer and performing the collective economic organizing functions. The third is that the account capital of social protection is contributed together by personal member, the land users (shareholding cooperative companies) and government. The fourth is to pay more attention to the added value and safety management of capital operation.
MixNet: Multi-modality Mix Network for Brain Segmentation
Creators: name: Chen, Long
name: Merhof, Dorit
Publisher: name: arXiv
Year: 2020
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Automated brain structure segmentation is important to many clinical quantitative analysis and diagnoses. In this work, we introduce MixNet, a 2D semantic-wise deep convolutional neural network to segment brain structure in multi-modality MRI images. The network is composed of our modified deep residual learning units. In the unit, we replace the traditional convolution layer with the dilated convolutional layer, which avoids the use of pooling layers and deconvolutional layers, reducing the number of network parameters. Final predictions are made by aggregating information from multiple scales and modalities. A pyramid pooling module is used to capture spatial information of the anatomical structures at the output end. In addition, we test three architectures (MixNetv1, MixNetv2 and MixNetv3) which fuse the modalities differently to see the effect on the results. Our network achieves the state-of-the-art performance. MixNetv2 was submitted to the MRBrainS challenge at MICCAI 2018 and won the 3rd place in the 3-label task. On the MRBrainS2018 dataset, which includes subjects with a variety of pathologies, the overall DSC (Dice Coefficient) of 84.7% (gray matter), 87.3% (white matter) and 83.4% (cerebrospinal fluid) were obtained with only 7 subjects as training data.
description: BrainLes, MICCAI 2018
Benefit Evaluation on the Control Mode for Typical Karst Rocky Desertification in Guizhou Province, China
Creators: name: Zuo, Xing-Jun
name: Zuo, Tai-An
name: Xu, Shu-Jian
name: Zuo, Xing-Jun
name: Zuo, Tai-An
name: Xu, Shu-Jian
Publisher: name: Unknown
Year: 2010
Subjects: subject: Agribusiness
subject: Desertification
subject: Control mode
subject: The Dingtan mode
subject: The Wangjiazhai-Yangchangdong small watershed control mode
subject: Guizhou Province
subject: China

description: Control mode for typical karst rocky desertification in Guizhou Province, China is selected as the research object. The ecological benefit, the social and economic benefit and the popularization prospect of mode are selected as evaluation indices. Evaluation index system of control mode benefits for karst rocky desertification is established. The Dingtan mode and the Wangjiazhai-Yangchangdong small watershed control mode are selected as evaluation objects. Preliminary assessment on the two modes are carried out by Analytic Hierarchy Process，grading evaluation, and comprehensive evaluation method. Result shows that comprehensive score of Dingtan mode is 3.81, which is higher than the score of Wangjiazhai-Yangchangdong small watershed control mode (3.11). In the aspects of ecological benefit and social and economic benefit, Dingtan mode (4.83 and 3.258) is superior than the Wangjiazhai-Yangchangdong small watershed control mode (3.38 and 2.531). In the aspect of popularization prospect of mode, score of Dingtan mode (3) is lower than that of Wangjiazhai-Yangchangdong small watershed control mode (3.333). Therefore, the evaluation index system has certain science and offers reference and guidance for the karst rocky desertification control in southwest China.
Phenomenology of the Littlest Higgs with T-Parity
Creators: name: Hubisz, Jay
name: Meade, Patrick
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Little Higgs models offer an interesting approach to weakly coupled electroweak symmetry breaking without fine tuning. The original little Higgs models were plagued by strong constraints from electroweak precision data which required a fine tuning to be reintroduced. An economical solution to this problem is to introduce a discrete symmetry (analogous to R-parity of SUSY) called T-parity. T-parity not only eliminates most constraints from electroweak precision data, but it also leads to a promising dark matter candidate. In this paper we investigate the dark matter candidate in the littlest Higgs model with T-parity. We find bounds on the symmetry breaking scale f as a function of the Higgs mass by calculating the relic density. We begin the study of the LHC phenomenology of the littlest Higgs model with T-parity. We find that the model offers an interesting collider signature that has a generic missing energy signal which could "fake" SUSY at the LHC. We also investigate the properties of the heavy partner of the top quark which is common to all littlest Higgs models, and how its properties are modified with the introduction of T-parity. We include an appendix with a list of Feynman rules specific to the littlest Higgs with T-parity to facilitate further study.
description: 32 pages, 8 figures; dark matter bounds revised; comphep model files made publicly available at http://www.lns.cornell.edu/public/theory/tparity/
Torus-breakdown near a Bykov attractor: a case study
Creators: name: Castro, Luísa
name: Rodrigues, Alexandre A. P.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: There are few explicit examples in the literature of vector fields exhibiting complex dynamics that may be proved analytically. This paper reports numerical experiments performed for an explicit two-parameter family of vector fields unfolding an attracting heteroclinic network, linking two saddle-foci with $ (\mathbb{SO}(2) \oplus \mathbb{Z}_2)$-symmetry. The vector field is the restriction to $\mathbb{S}^3$ of a polynomial vector field in $\mathbb{R}^4$. We investigate global bifurcations due to symmetry-breaking and we detect strange attractors via a phenomenon called Torus-Breakdown theory. We explain how an attracting torus gets destroyed by following the changes in the invariant manifolds of the saddle-foci. Although a complete understanding of the corresponding bifurcation diagram and the mechanisms underlying the dynamical changes is still out of reach, using a combination of theoretical tools and computer simulations, we have uncovered some complex patterns for the symmetric family under analysis. This also suggests a route to obtain rotational horseshoes; additionally, we give an attempt to elucidate some of the bifurcations involved in an Arnold wedge.
description: arXiv admin note: text overlap with arXiv:1911.09380
Oriented Cohomology and Motivic Decompositions of Relative Cellular Spaces
Creators: name: Nenashev, A.
name: Zainoulline, K.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Algebraic Geometry (math.AG)
subject: K-Theory and Homology (math.KT)
subject: FOS: Mathematics
subject: 14F43

description: For an oriented cohomology theory A and a relative cellular space X, we decompose the A-motive of X into a direct sum of twisted motives of the base spaces. We also obtain respective decompositions of the A-cohomology of X. Applying them, one can compute A(X), where X is an isotropic projective homogeneous variety and A means algebraic K-theory, motivic cohomology or algebraic cobordism MGL.
description: 23 pages, XYPIC, hyperref
Tailoring Term Truncations for Electronic Structure Calculations Using a Linear Combination of Unitaries
Creators: name: Meister, Richard
name: Benjamin, Simon C.
name: Campbell, Earl T.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A highly anticipated use of quantum computers is the simulation of complex quantum systems including molecules and other many-body systems. One promising method involves directly applying a linear combination of unitaries (LCU) to approximate a Taylor series by truncating after some order. Here we present an adaptation of that method, optimized for Hamiltonians with terms of widely varying magnitude, as is commonly the case in electronic structure calculations. We show that it is more efficient to apply LCU using a truncation that retains larger magnitude terms as determined by an iterative procedure. We obtain bounds on the simulation error for this generalized truncated Taylor method, and for a range of molecular simulations, we report these bounds as well as exact numerical results. We find that our adaptive method can typically improve the simulation accuracy by an order of magnitude, for a given circuit depth.
description: 14 pages, 7 figures
Supplemental information for "The phylogenetic relationships of geoemydid turtles from the Eocene Messel Pit Quarry: a first assessment using methods for continuous characters"
Creators: name: Ascarrunz, Eduardo
name: Joyce, Walter G
name: Claude, Julien
Publisher: name: Zenodo
Year: 2021

description: Data files, scripts, and Julia package ("Phylodendron2") used in the analyses of the thesis chapter "The phylogenetic relationships of geoemydid turtles from the Eocene Messel Pit Quarry: a first assessment using methods for continuous characters", by Eduardo Ascarrrunz.
description: This work is funded by a grant from the Swiss National Science Foundation to Walter G. Joyce (20021_153502/1, 2)
Gurevich-Zybin system
Creators: name: Pavlov, Maxim
Publisher: name: arXiv
Year: 2004
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We present three different linearizable extensions of the Gurevich-Zybin system. Their general solutions are found by reciprocal transformations. In this paper we rewrite the Gurevich-Zybin system as a Monge-Ampere equation. By application of reciprocal transformation this equation is linearized. Infinitely many local Hamiltonian structures, local Lagrangian representations, local conservation laws and local commuting flows are found. Moreover, all commuting flows can be written as Monge-Ampere equations similar to the Gurevich-Zybin system. The Gurevich-Zybin system describes the formation of a large scale structures in the Universe. The second harmonic wave generation is known in nonlinear optics. In this paper we prove that the Gurevich-Zybin system is equivalent to a degenerate case of the second harmonic generation. Thus, the Gurevich-Zybin system is recognized as a degenerate first negative flow of two-component Harry Dym hierarchy up to two Miura type transformations. A reciprocal transformation between the Gurevich-Zybin system and degenerate case of the second harmonic generation system is found. A new solution for the second harmonic generation is presented in implicit form.
description: Corrected typos and misprints
Additional file 1 of Socio-demographic and economic inequalities in modern contraception in 11 low- and middle-income countries: an analysis of the PMA2020 surveys
Creators: name: Blumenberg, Cauane
name: Franciele Hellwig
name: Ewerling, Fernanda
name: Aluísio J. D. Barros
Publisher: name: figshare
Year: 2020
Subjects: 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: Science Policy

description: Additional file 1. Absolute average annual change (AAAC) on prevalence and shares of modern contraceptive subtypes. Table containing detailed information on the absolute average annual change, and 95% confidence intervals, on prevalence and shares of modern contraceptive subtypes.
Decay Chain Fitting with a Kalman Filter
Creators: name: Hulsbergen, W. D.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We present a method to perform a least squares fit of a decay chain involving multiple decay vertices. Our technique allows for the simultaneous extraction of decay time, position and momentum parameters and their uncertainties and correlations for all particles in a decay chain.
description: 17 pages, 3 figures, submitted to NIM-A
Laboratory study of the coating method to control ARD generation
Creators: name: Jia, Weiyi
Publisher: name: University of British Columbia
Year: 2009

description: This study proposed a new approach in preventing ARD generation by coating rock surfaces to exclude moisture and oxygen. Four market-available materials, two of them epoxy based, one aromatic based, and the other silicon based, were tested with five different test conditions and techniques. Six ARD generation tests were carried out to study the characteristics of the rock samples. The rock samples showed a strong ARD generating potential. The pH value and metal concentrations of the rock samples were near these observed in field measurements. The water to rock ratio influenced ARD generation significantly. The higher the rock to water ratio, the lower the pH value, and the higher the metal concentrations. Five testing methods and techniques were carried out to study the coating material's ability to prevent ARD generation. In the coating capacity test, coating materials, epoxy-41, epoxy-43, and aromatic-W were tested with the agitation of water circulation. There was no significant difference amongst the three samples in pH and metal concentration. The freezing and thawing test was designed to study the performance of materials during and after freezing and thawing cycles, the heating and cooling test for heating and cooling cycles. No significant alterations were identified on the surface of the coating materials during the tests. The freezing and thawing, and heating and cooling had no influence on the material capacity tests. However, silicone-S showed a much greater value of metal concentrations and much lower values of pH than the other three. The bonding capacity test was designed to study a material's ability to adhere to the rock surface and hold adjacent, rocks together. All three materials, epoxy-41, epoxy-43, and acetone-W, showed a high performance, in which acetone-W was the best. The thin section technique was used to visually observe the coating layers on the rock surface. Ten thin section samples coated with all four coating materials (epoxy-41, epoxy-43, acetone-W, silicone-S) under different test conditions (coating capacity test, freezing and thawing test, and heating and cooling test) were observed. No significant difference among the coating materials was found. Through the above-mentioned tests and analysis, this preliminary study evaluated the performance of coating materials in preventing ARD generation using the coating method. The recommended coating materials in order of performance were acetone-W > epoxy-43 > epoxy-41. Silicone-S was not an appropriate material for the coating method.
Random Matrix Theory and Entanglement in Quantum Spin Chains
Creators: name: Keating, J. P.
name: Mezzadri, F.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We compute the entropy of entanglement in the ground states of a general class of quantum spin-chain Hamiltonians - those that are related to quadratic forms of Fermi operators - between the first N spins and the rest of the system in the limit of infinite total chain length. We show that the entropy can be expressed in terms of averages over the classical compact groups and establish an explicit correspondence between the symmetries of a given Hamiltonian and those characterizing the Haar measure of the associated group. These averages are either Toeplitz determinants or determinants of combinations of Toeplitz and Hankel matrices. Recent generalizations of the Fisher-Hartwig conjecture are used to compute the leading order asymptotics of the entropy as N --> infinity . This is shown to grow logarithmically with N. The constant of proportionality is determined explicitly, as is the next (constant) term in the asymptotic expansion. The logarithmic growth of the entropy was previously predicted on the basis of numerical computations and conformal-field-theoretic calculations. In these calculations the constant of proportionality was determined in terms of the central charge of the Virasoro algebra. Our results therefore lead to an explicit formula for this charge. We also show that the entropy is related to solutions of ordinary differential equations of Painlevé type. In some cases these solutions can be evaluated to all orders using recurrence relations.
description: 39 pages, 1 table, no figures. Revised version: minor corrections
Basnage, Henri, Traité des hypothèques, 2nde éd. revue et augmentée, Rouen, Jean Lucas, 1687
Creators: name: Basnage de Beauval, Henri
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2019

description: Source: https://books.google.fr/books?id=zyE-v8B-PlAC&printsec=frontcover&dq=inauthor:henri+inauthor:basnage&hl=fr&sa=X&redir_esc=y#v=onepage&q&f=false
description: Relation: vignette : https://www.nakala.fr/data/11280/0ff5e62f
The Effect of Point-of-Purchase Display Material on Sales of Fresh Texas Grapefruit
Creators: name: Sporleder, Thomas L.
name: Sporleder, Thomas L.
Publisher: name: Unknown
Year: 1969
Subjects: subject: Consumer/Household Economics
subject: Food Consumption/Nutrition/Food Safety
subject: Marketing
subject: FOS: Economics and business
subject: Production Economics
subject: Point-of-Purchase
subject: Texas
subject: Grapefruit
subject: Sales
subject: Display Material

description: Written for Texas Valley Citrus Committee
Multispectral Video Fusion for Non-contact Monitoring of Respiratory Rate and Apnea
Creators: name: Scebba, Gaetano
name: Da Poian, Giulia
name: Karlen, Walter
Publisher: name: arXiv
Year: 2020
Subjects: subject: Signal Processing (eess.SP)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Image and Video Processing (eess.IV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Continuous monitoring of respiratory activity is desirable in many clinical applications to detect respiratory events. Non-contact monitoring of respiration can be achieved with near- and far-infrared spectrum cameras. However, current technologies are not sufficiently robust to be used in clinical applications. For example, they fail to estimate an accurate respiratory rate (RR) during apnea. We present a novel algorithm based on multispectral data fusion that aims at estimating RR also during apnea. The algorithm independently addresses the RR estimation and apnea detection tasks. Respiratory information is extracted from multiple sources and fed into an RR estimator and an apnea detector whose results are fused into a final respiratory activity estimation. We evaluated the system retrospectively using data from 30 healthy adults who performed diverse controlled breathing tasks while lying supine in a dark room and reproduced central and obstructive apneic events. Combining multiple respiratory information from multispectral cameras improved the root mean square error (RMSE) accuracy of the RR estimation from up to 4.64 monospectral data down to 1.60 breaths/min. The median F1 scores for classifying obstructive (0.75 to 0.86) and central apnea (0.75 to 0.93) also improved. Furthermore, the independent consideration of apnea detection led to a more robust system (RMSE of 4.44 vs. 7.96 breaths/min). Our findings may represent a step towards the use of cameras for vital sign monitoring in medical applications.
Additional file 1 of An empirical comparison of population genetic analyses using microsatellite and SNP data for a species of conservation concern
Creators: name: Zimmerman, Shawna J.
name: Aldridge, Cameron L.
name: Oyler-McCance, Sara J.
Publisher: name: figshare
Year: 2020
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1: Table S1. Diversity statistics. Table S2. Differentiation statistics. Fig. S1. Dendrograms created using the “single” (based on closest pair) method. Fig. S2. Dendrograms created using the “complete” (based on furthest pair) method. Fig. S3. Dendrograms created using microsatellite loci from the 60 individuals included in the SNP dataset. Fig. S4. Discriminant analysis of principle components (DAPC) for microsatellite from the 60 individuals sampled for SNPs.
The Physics of Galaxy Clustering I: A Model for Subhalo Populations
Creators: name: Zentner, Andrew R.
name: Berlind, Andreas A.
name: Bullock, James S.
name: Kravtsov, Andrey V.
name: Wechsler, Risa H.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: (Abridged) We present a semi-analytic model for Cold Dark Matter halo substructure that can be used as a framework for studying galaxy formation and an ingredient in halo models of galaxy clustering. We perform a comprehensive comparison of the model to the results of a suite of high-resolution cosmological simulations. The comparisons reveal that subhalo statistics, such as velocity and mass functions, radial distributions, and the halo occupation distributions, agree well over three orders of magnitude in host halo mass at various redshifts. Both in the simulations and in our model, the radial distributions of subhalos are significantly shallower than that of the dark matter density. The abundance of subhalos in a host is set by competition between destruction and new accretion. High mass halos and halos at high redshift tend to host more subhalos because the subhalos have, on average, been accreted more recently. Similarly, at fixed mass, halos that formed more recently host more subhalos. Observed "fossil groups" may represent an extreme tail of this correlation. We find a related correlation between host halo concentration and subhalo abundance at fixed host mass, Nsat ~ c^-a, where a changes with redshift and host-to-subhalo mass ratio. Lastly, we use our model to populate host halos in one of our high-resolution cosmological simulations, replacing the subhalos resolved in the simulation with subhalos computed according to our model. We show that the resulting 2pt correlation function of such a "hybrid" halo ensemble is indistinguishable from that measured directly in the simulation. This supports one of the key tenets of the standard halo model -- the assumption that the halo occupation distribution is statistically independent of host halo environment.
description: 23 pages, 16 figures. Replaced with revised version accepted for publication in ApJ. Last revision corrects typo in Eq. 8 which is incorrect in published version
Did 1933 New Deal Legislation Contribute to Farm Real Estate: Temporal and Spatial Analysis
Creators: name: Shaik, Saleem
name: Atwood, Joseph A.
name: Helmers, Glenn A.
name: Shaik, Saleem
name: Atwood, Joseph A.
name: Helmers, Glenn A.
Publisher: name: Unknown
Year: 2010
Subjects: subject: Agricultural Finance
subject: Farm Management
subject: Farm programs payments
subject: Land values
subject: Extended income capitalization model
subject: Panel recursive/triangular structure simultaneous equation model
subject: Resource regional analysis
subject: U.S. State-level data
subject: 1938-2007.

description: The proportions of land values generated by farm program payments and farm returns are examined using an extended income capitalization model. The extended income capitalization model addresses the identification issue introduced by the counter-cyclical nature of farm program payments and farm returns. Procedures are presented that allow the estimation of agriculture land value shares without requiring explicit knowledge or assumptions with respect to the net land rental shares of farm returns or farm program payments. Results from the panel recursive or triangular-structure simultaneous equation model applied to 48 states in the U.S. for the period 1938 to 2006 indicate on average 41-45.6 percent and 54.4-59 percent of the agricultural land values can be identified with farm program payments and farm returns respectively. Spatially, at the resource regional level the contribution of farm program payments was as low as 16.8 percent in Eastern Upland region compared to a high of 51 percent in the Southern Plains region.
Automatic sleep stage classification with deep residual networks in a mixed-cohort setting
Creators: name: Olesen, Alexander Neergaard
name: Jennum, Poul
name: Mignot, Emmanuel
name: Sorensen, Helge B D
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Signal Processing (eess.SP)
subject: Applications (stat.AP)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Study Objectives: Sleep stage scoring is performed manually by sleep experts and is prone to subjective interpretation of scoring rules with low intra- and interscorer reliability. Many automatic systems rely on few small-scale databases for developing models, and generalizability to new datasets is thus unknown. We investigated a novel deep neural network to assess the generalizability of several large-scale cohorts. Methods: A deep neural network model was developed using 15684 polysomnography studies from five different cohorts. We applied four different scenarios: 1) impact of varying time-scales in the model; 2) performance of a single cohort on other cohorts of smaller, greater or equal size relative to the performance of other cohorts on a single cohort; 3) varying the fraction of mixed-cohort training data compared to using single-origin data; and 4) comparing models trained on combinations of data from 2, 3, and 4 cohorts. Results: Overall classification accuracy improved with increasing fractions of training data (0.25$\%$: 0.782 $\pm$ 0.097, 95$\%$ CI [0.777-0.787]; 100$\%$: 0.869 $\pm$ 0.064, 95$\%$ CI [0.864-0.872]), and with increasing number of data sources (2: 0.788 $\pm$ 0.102, 95$\%$ CI [0.787-0.790]; 3: 0.808 $\pm$ 0.092, 95$\%$ CI [0.807-0.810]; 4: 0.821 $\pm$ 0.085, 95$\%$ CI [0.819-0.823]). Different cohorts show varying levels of generalization to other cohorts. Conclusions: Automatic sleep stage scoring systems based on deep learning algorithms should consider as much data as possible from as many sources available to ensure proper generalization. Public datasets for benchmarking should be made available for future research.
description: Author's original version. This article has been accepted for publication in SLEEP published by Oxford University Press