cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Environmental Kuznets Curve Under a New framework: Role of Social Capital in Water Pollution
Creators: name: Marzoughi, Hassan
name: Paudel, Krishna P.
name: Schafer, Mark J.
name: Marzoughi, Hassan
name: Paudel, Krishna P.
name: Schafer, Mark J.
Publisher: name: Unknown
Year: 2005
Subjects: Environmental Economics and Policy

description: We advance a case for an inclusion of social capital in the environmental Kuznets curve analysis using highly disaggregated data on water pollution in Louisiana. A social capital index and other variables are used in parametric and spatial panel regression models to explain water pollution dynamics.
Performance and Energy Trade-Offs for Parallel Applications on Heterogeneous Multi-Processing Systems
Creators: name: Coutinho, Demetrios A. M.
name: De Sensi, Daniele
name: Lorenzon, Arthur Francisco
name: Georgiou, Kyriakos
name: Yanez, Jose Nunez
name: Eder, Kerstin
name: de Souza, Samuel Xavier
Publisher: name: arXiv
Year: 2020
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This work proposes a methodology to find performance and energy trade-offs for parallel applications running on Heterogeneous Multi-Processing systems with a single instruction-set architecture. These offer flexibility in the form of different core types and voltage and frequency pairings, defining a vast design space to explore. Therefore, for a given application, choosing a configuration that optimizes the performance and energy consumption is not straightforward. Our method proposes novel analytical models for performance and power consumption whose parameters can be fitted using only a few strategically sampled offline measurements. These models are then used to estimate an application's performance and energy consumption for the whole configuration space. In turn, these offline predictions define the choice of estimated Pareto-optimal configurations of the model, which are used to inform the selection of the configuration that the application should be executed on. The methodology was validated on an ODROID-XU3 board for eight programs from the PARSEC Benchmark, Phoronix Test Suite and Rodinia applications. The generated Pareto-optimal configuration space represented a 99% reduction of the universe of all available configurations. Energy savings of up to 59.77%, 61.38% and 17.7% were observed when compared to the performance, ondemand and powersave Linux governors, respectively, with higher or similar performance.
description: 24 pages, 7 figures, GitLab repository see https://gitlab.com/lappsufrn/XU3EM
Managing Crop Production Risk with Crop Index Insurance Products
Creators: name: Deng, Xiaohui
name: Barnett, Barry J.
name: Yu, Yingzhuo
name: Hoogenboom, Gerrit
name: Deng, Xiaohui
name: Barnett, Barry J.
name: Yu, Yingzhuo
name: Hoogenboom, Gerrit
Publisher: name: Unknown
Year: 2005
Subjects: Risk and Uncertainty

description: Index crop insurance products can eliminate the asymmetric information problem inherent in farm-level multiple peril crop insurance. Purchasers of index insurance products are, however, exposed to basis risk. This study examines the feasibility of various index insurance products for corn farms in southern Georgia. Index insurance products considered are based on county yields, cooling degree days, and predicted yields from a crop simulation model.
Spin-dependent Quantum Interference in Single-Wall Carbon Nanotubes with Ferromagnetic Contacts
Creators: name: Man, H. T.
name: Wever, I. J. W.
name: Morpurgo, A. F.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We report the experimental observation of spin-induced magnetoresistance in single-wall carbon nanotubes contacted with high-transparency ferromagnetic electrodes. In the linear regime the spin-induced magnetoresistance oscillates with gate voltage in quantitative agreement with calculations based on a Landauer-Buttiker model for independent electrons. Consistent with this interpretation, we find evidence for bias-induced oscillation in the spin-induced magnetoresistance signal on the scale of the level spacing in the nanotube. At higher bias, the spin-induced magnetoresistance disappears because of a sharp decrease in the effective spin-polarization injected from the ferromagnetic electrodes.
description: Replaced with published version
Association of peer relations to adjustment among Chinese adolescent newcomers : a risk and resiliency perspective
Creators: name: Teja, Zuhra
Publisher: name: University of British Columbia
Year: 2009

description: From a risk and resiliency perspective, the current study examined the protective role of peer relations with respect to psychological and school adjustment among 122 Chinese adolescent newcomers (ages 11 to 19). Newcomers were defined as early and middle/late adolescents from China who have resided in Canada for 5 years or less. Data were collected via self-reports of their peer relations (i.e., characteristics of friendship networks, peer group integration, quality of best friendships) and psychological adjustment (i.e., psychosomatic symptoms, anxiety, and depression), and teacher reports of their school adjustment (i.e., competent behaviors, problem behaviors). Results revealed that the large majority of Chinese adolescent newcomers reported having friends who were of the same gender, from the same country, and of similar age. As well, gender and age differences emerged with regard to peer relational and adjustment variables. Results of hierarchical regression analyses revealed that dimensions of peer relations explained significant amounts of variance in psychological and school adjustment outcomes. Peer group integration was a consistent significant predictor of psychological and school adjustment. As well, friendship quality was a significant predictor of peer group integration. Results of this study provide cross-cultural support for the role of peer relations as a compensatory (protective) variable that predicts positive adjustment among Chinese adolescent newcomers.
A Household Level Analysis of Food Expenditure Patterns in Urban China: 1995-2000
Creators: name: Aguero, Jorge M.
name: Gould, Brian W.
name: Aguero, Jorge M.
name: Gould, Brian W.
Publisher: name: Unknown
Year: 2003
Subjects: subject: Consumer/Household Economics
subject: Food Consumption/Nutrition/Food Safety
subject: International Development
subject: International Relations/Trade
subject: China's Food Consumption
subject: Chinese Markets
subject: Chinese Household Income
subject: World Trade Organization

description: With China's admission into the WTO, there is the potential for dramatic increases in U.S. agricultural exports to China. As China's economy continues to develop, there is general consensus that there will be an associated change in the population's diet. Currently, dairy products account for a small proportion of total food consumed, but that has been increasing in importance over the last two decades. As Chinese markets become more open to U.S. food products, it is important that U.S. manufacturers and traders obtain a better understanding of the determinants of food expenditures in China. This paper addresses the question of how changes in household income may impact food demand in general and dairy products in particular.
Predation by Atractosteus tropicus on Bufo marinus and its possible affect on population in a lowland tropical wet rainforest
Creators: name: Lewis, Todd R
name: Ryall, Colin
name: Laduke, Thomas C
name: Grant, Paul B C
Publisher: name: arXiv
Year: 2020
Subjects: subject: Other Quantitative Biology (q-bio.OT)
subject: FOS: Biological sciences

description: Fish predation can affect amphibian populations. Most examples report invasive fish species and their negative effect on specific amphibians. Here we provide an occurrence of natural fish predation by the tropical gar Atractosteus tropicus on the cane toad Bufo marinus. We observed physical damage caused by A. tropicus attacking B. marinus. When adult B. marinus were removed from the population subadult toads refilled the adults niche, resupplementing the population. Local observations of predation by fish on amphibians are important to differentiate natural population fluctuations from amphibian population declines.
Prevalence and Impact of Diabetes and Hypertension on Patients with Covid-19
Creators: name: Barrera, Francisco
name: Shekhar, Skand
name: Ponce, Oscar
name: Rodríguez-Gutiérrez, René
name: Hannah-Shmouni, Fady
name: Wurth, Rachel
name: Moreno, Pablo J.
name: Hajdenberg, Michelle
name: Alvarez-Villalobos, Neri A.
name: Hall, Janet E.
name: Schiffrin, Ernesto L.
name: Eisenhofer, Graeme
name: Porter, Forbes
name: Brito, Juan P.
name: Bornstein, Stefan R.
name: Stratakis, Constantine A.
Publisher: name: figshare
Year: 2020
Subjects: subject: 110306 Endocrinology
subject: FOS: Clinical medicine

description: This data describes the supplemental material associated with our systematic review. Through this systematic review we aimed to clarify the prevalence of Diabetes Mellitus and Hypertension and their associated risks for poor Covid-19 outcomes in adult patients. Our main manuscript is going to be published elsewhere.
Finite-temperature properties of frustrated classical spins coupled to the lattice
Creators: name: Weber, Cedric
name: Becca, Federico
name: Mila, Frederic
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We present extensive Monte Carlo simulations for a classical antiferromagnetic Heisenberg model with both nearest ($J_1$) and next-nearest ($J_2$) exchange couplings on the square lattice coupled to the lattice degrees of freedom. The Ising-like phase transition, that appears for $J_2/J_1>1/2$ in the pure spin model, is strengthened by the spin-lattice coupling, and is accompanied by a lattice deformation from a tetragonal symmetry to an orthorhombic one. Evidences that the universality class of the transition does not change with the inclusion of the spin-lattice coupling are reported. Implications for ${\rm Li_2VOSiO_4}$, the prototype for a layered $J_1{-}J_2$ model in the collinear regime, are also discussed.
description: 6 pages and 8 figures
A Historical Account of My Early Research Interests
Creators: name: Pettorossi, Alberto
Publisher: name: arXiv
Year: 2020
Subjects: subject: Logic in Computer Science (cs.LO)
subject: Programming Languages (cs.PL)
subject: FOS: Computer and information sciences

description: This paper presents a brief account of some of the my early research interests. This historical account starts from my laurea thesis on Signal Theory and my master thesis on Computation Theory. It recalls some results in Combinatory Logic and Term Rewriting Systems. Some other results concern Program Transformation, Parallel Computation, Theory of Concurrency, and Proof of Program Properties. My early research activity has been mainly done in cooperation with Andrzej Skowron, Anna Labella, and Maurizio Proietti.
description: In Proceedings VPT/HCVS 2020, arXiv:2008.02483
Exact Scale Invariance of Composite-Field Coupling Constants
Creators: name: Akama, Keiichi
name: Hattori, Takashi
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We show that the coupling constant of a quantum-induced composite field is scale invariant due to its compositeness condition. It is first demonstrated in next-to-leading order in 1/N in typical models, and then we argue that it holds exactly.
description: 4 pages
Stellar Masses of Giant Clumps in CANDELS and Simulated Galaxies Using Machine Learning
Creators: name: Huertas-Company, M.
name: Guo, Y.
name: Ginzburg, O.
name: Lee, C. T.
name: Mandelker, N.
name: Metter, M.
name: Primack, J. R.
name: Dekel, A.
name: Ceverino, D.
name: Faber, S. M.
name: Koo, D. C.
name: Koekemoer, A.
name: Snyder, G.
name: Giavalisco, M.
name: Zhang, H.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: A significant fraction of high redshift star-forming disc galaxies are known to host giant clumps, whose nature and role in galaxy evolution are yet to be understood. In this work we first present a new method based on neural networks to detect clumps in galaxy images. We use this method to detect clumps in the rest-frame optical and UV images of a complete sample of $\sim1500$ star forming galaxies at $1
description: Accepted for publication in MNRAS - This is the final version
Lions and jaguars
Creators: name: Jiménez-García, Blanca
Publisher: name: figshare
Year: 2020
Subjects: subject: Archaeology
subject: Artificial Intelligence and Image Processing
subject: FOS: Computer and information sciences
subject: 80109 Pattern Recognition and Data Mining
subject: 170203 Knowledge Representation and Machine Learning
subject: FOS: Psychology

description: Images corresponding to lion and jaguars tooth marks captured through binocular microscope at 30 X
Do Transaction Costs and Risk Preferences Influence Marketing Arrangements in the Illinois Hog Industry?
Creators: name: Franken, Jason R.V.
name: Pennings, Joost M.E.
name: Garcia, Philip
name: Franken, Jason R.V.
name: Pennings, Joost M.E.
name: Garcia, Philip
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agricultural Finance
subject: risk behavior
subject: transaction costs economics
subject: risk attitude and risk perception
subject: asset specificity
subject: contracts
subject: hogs

description: Studies of hog industry structure often invoke risk reduction and transaction costs explanations for empirical observations but fail to directly examine the core concepts of risk behavior and transaction costs theories. Using a more unified conceptual framework and unique survey and accounting data, this study demonstrates that that risk preferences and asset specificity impact Illinois producers’ use of contracts and spot markets as suggested by theory. Factor analytic methods limit measurement error for indirectly observable risk and transaction costs variables employed in logit regressions. In particular, related investments in specific hog genetics and specific human capital regarding the production process increase the probability of selecting long-tem contracts over spot markets. Producers who perceive greater levels of price risk and/or are more averse to it appear more (less) likely to use long-term contracts (spot markets), and hence, to make such investments.
Supplementary Materials from The effect of face masks and sunglasses on identity and expression recognition with super-recognizers and typical observers
Creators: name: Noyes, Eilidh
name: Davis, Josh P.
name: Petrov, Nikolay
name: Gray, Katie L. H.
name: Ritchie, Kay L.
Publisher: name: The Royal Society
Year: 2021
Subjects: subject: 179999 Psychology and Cognitive Sciences not elsewhere classified
subject: FOS: Psychology

description: Additional analysis including same/different response breakdown for matching experiments, confusion matrix for emotion data, and d prime analysis.
From Well Structured Transition Systems to Program Verification
Creators: name: Finkel, Alain
Publisher: name: arXiv
Year: 2020
Subjects: subject: Logic in Computer Science (cs.LO)
subject: Formal Languages and Automata Theory (cs.FL)
subject: FOS: Computer and information sciences

description: We describe the use of the theory of WSTS for verifying programs.
description: In Proceedings VPT/HCVS 2020, arXiv:2008.02483
Polymer translocation through a nanopore: a two-dimensional Monte Carlo simulation
Creators: name: Luo, Kaifu
name: Ala-Nissila, Tapio
name: Ying, See-chen
Publisher: name: arXiv
Year: 2005
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Biological Physics (physics.bio-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We investigate the problem of polymer translocation through a nanopore in the absence of an external driving force. To this end, we use the two-dimensional (2D) fluctuating bond model with single-segment Monte Carlo moves. To overcome the entropic barrier without artificial restrictions, we consider a polymer which is initially placed in the middle of the pore, and study the escape time required for the polymer to completely exit the pore on either end. In particular, we examined the effect of the pore length on the escape time.
description: 16Pages, 6 figures
Hay Price Forecasts at the State Level
Creators: name: Diersen, Matthew A.
name: Diersen, Matthew A.
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agricultural Finance
subject: alfalfa price
subject: feed demand
subject: perennial crop
subject: hay stocks

description: Higher prices for major crops (e.g., corn, soybeans and wheat) have received considerable attention by analysts, researchers, and producers. A common perception is that acres can be readily bid away from other crops to quickly return to equilibrium price levels. Seldom mentioned are crops that do not trade on a national platform. Principal among these crops probably would be hay from alfalfa and grass. A balance sheet model is developed at the state level for South Dakota. As a state with typically large carryover stocks of hay and multiple markets served, South Dakota presents a stark contrast to states with more stable production, supply, and use. Several structural relations and equations are presented to forecast acres, supply, and price through an inverse demand function. A discussion follows on how to update the price forecast as additional information is obtained. Suggestions are also offered on extending the model to other states.
Can Real Option Value Explain Why Producers Appear to Store Too Long?
Creators: name: Kim, Hyun Seok
name: Brorsen, B. Wade
name: Kim, Hyun Seok
name: Brorsen, B. Wade
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agricultural Finance
subject: real option value
subject: seasonal mean reversion

description: Previous studies suggest that producers tend to store crops longer than makes economic sense. Since decisions to sell are irreversible, there can be a real option value from waiting to sell grain. This real option value may explain why producers appear to store too long. A seasonal mean reversion model is estimated that allows prices to be a random walk within a season, but mean reverting across crop years. Unless prices are extremely low, it is optimal for producers to sell before the mean reversion begins. Thus, the real option value of waiting cannot explain why producers seem to store at a loss in the latter part of crop years.
Rücker, Adolf, Die Lukas-Homilien des hl. Cyrill von Alexandrien
Creators: name: Ehrhard, A.
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 10 (1912): Oriens christianus, Band 10
Therapeutic theatre : the weaving of self and theatre : a performative inquiry of the collaborative play-creating process and optimal adolscent development
Creators: name: Beare, David Merrit
Publisher: name: University of British Columbia
Year: 2009

description: Based on the overlapping principles of social constructivism, performance psychology, drama therapy, and therapeutic theatre, I explore the weaving of self and theatre. The main purpose for this performative inquiry study is to reach the most well-informed and sophisticated interpretation of how the collaborative play-creating process fosters optimal adolescent development. For the past three and a half years, I have facilitated hundreds of high school students through five separate collaborative play-creating processes. I position myself in this research with the belief that development is relational and that the teaching of theatre arts would be better served with the shift from the development of theatre to the development of people. The central interpretative site from which I will construct all my interpretations for this study are based on the transcription of five interviews (four youth and one facilitator) and all my field notes (as facilitator and researcher). From the transcribed interviews and field notes, I have conceptualized a theoretical framework, which involves nine themes, divided into two sections: theatre and self. The theatre section involves four collaborative play-creating process steps: script-writing, rehearsing, performing, and ongoing reflecting. The self section involves five developmental stages: inclusion, control, intimacy, empowerment and vision. In addition, selected sections of the transcribed text were used to create a script depicting eight characters operating at different developmental stages. Overall, I share with the readers my interpretations and analysis of the construction of the nine themes and the script. Conclusions of my study are made based on various stakeholders' evaluations of my interpretations.
QCD Axions and CMB Anisotropy
Creators: name: Iso, Satoshi
name: Kawana, Kiyoharu
name: Shimada, Kengo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper, we consider a possibility that the temperature anisotropy of cosmic microwave background (CMB) is dominantly generated by the primordial fluctuations of QCD-axion like particles under a circumstance that inflaton's perturbation is too small to explain the CMB anisotropy. Since the axion potential is generated by acquiring its energy from radiation, the primordial fluctuations of the axion field generated in the inflation era are correlated with the CMB anisotropies. Consequently, the observations stringently constrain a model of the axion and the early universe scenario. The following conditions must be satisfied: (i) sufficient amplitudes of the CMB anisotropy (ii) consistency with the axion isocurvature constraint and (iii) the non-Gaussianity constraint. To satisfy these conditions, a large energy fraction $Ω_A^{}$ of the axion is necessary at the QCD scale when the axion-potential is generated, but simultaneously, it must become tiny at the present era due to the isocurvature constraint. Thus an additional scenario of the early universe, such as low scale thermal inflation, is inevitable to dilute the axions after the QCD scale. We investigate such a model and obtain its allowed parameter region.
description: 39 pages, 5 figures; version to appear in PRD (v2)
The Innermost Ejecta of Core Collapse Supernovae
Creators: name: Fröhlich, C.
name: Hauser, P.
name: Liebendoerfer, M.
name: Martinez-Pinedo, G.
name: Bravo, E.
name: Hix, W. R.
name: Zinner, N. T.
name: Thielemann, F. -K.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We ensure successful explosions (of otherwise non-explosive models) by enhancing the neutrino luminosity via reducing the neutrino scattering cross sections or by increasing the heating efficiency via enhancing the neutrino absorption cross sections in the heating region. Our investigations show that the resulting electron fraction Ye in the innermost ejecta is close to 0.5, in some areas even exceeding 0.5. We present the effects of the resulting values for Ye on the nucleosynthesis yields of the innermost zones of core collapse supernovae.
description: 4pages, 2figures; contribution to Nuclei In The Cosmos VIII, to appear in Nucl. Phys. A
A Comparison of Threshold Cointegration and Markov-Switching Vector Error Correction Models in Price Transmission Analysis
Creators: name: Ihle, Rico
name: Von Cramon-Taubadel, Stephan
name: Ihle, Rico
name: Von Cramon-Taubadel, Stephan
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agricultural Finance
subject: price transmission
subject: market integration
subject: threshold vector error correction model
subject: Markov-switching vector error correction model
subject: comparison
subject: nonlinear time series analysis

description: We compare two regime-dependent econometric models for price transmission analysis, namely the threshold vector error correction model and Markov-switching vector error correction model. We first provide a detailed characterization of each of the models which is followed by a comprehensive comparison. We find that the assumptions regarding the nature of their regime-switching mechanisms are fundamentally different so that each model is suitable for a certain type of nonlinear price transmission. Furthermore, we conduct a Monte Carlo experiment in order to study the performance of the estimation techniques of both models for simulated data. We find that both models are adequate for studying price transmission since their characteristics match the underlying economic theory and allow hence for an easy interpretation. Nevertheless, the results of the corresponding estimation techniques do not reproduce the true parameters and are not robust against nuisance parameters. The comparison is supplemented by a review of empirical studies in price transmission analysis in which mostly the threshold vector error correction model is applied.
Multitask Models for Supervised Protests Detection in Texts
Creators: name: Radford, Benjamin J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computation and Language (cs.CL)
subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: The CLEF 2019 ProtestNews Lab tasks participants to identify text relating to political protests within larger corpora of news data. Three tasks include article classification, sentence detection, and event extraction. I apply multitask neural networks capable of producing predictions for two and three of these tasks simultaneously. The multitask framework allows the model to learn relevant features from the training data of all three tasks. This paper demonstrates performance near or above the reported state-of-the-art for automated political event coding though noted differences in research design make direct comparisons difficult.
Magneto-Dielectric Effect in the S = 1/2 Quasi-Two Dimensional Antiferromagnet K2V3O8
Creators: name: Rai, R. C.
name: Cao, J.
name: Musfeldt, J. L.
name: Singh, D. J.
name: Jin, R.
name: Zhou, Z. X.
name: Sales, B. C.
name: Mandrus, D.
name: Wei, X.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report the optical and magneto-optical properties of K2V3O8, an S=1/2 quasi-two-dimensional Heisenberg antiferromagnet. Local spin density approximation electronic structure calculations are used to assign the observed excitations and analyze the field dependent features. Two large magneto-optical effects, centered at ~1.19 and 2.5 eV, are attributed to field-induced changes in the V 4+ d to d on-site excitations due to modification of the local crystal field environment of the VO5 square pyramids with applied magnetic field. Taken together, the evidence for a soft lattice, the presence of vibrational fine structure on the sharp 1.19 eV magneto-optical feature,and the fact that these optical excitations are due to transitions from a nearly pure spin polarized V d state to hybridized states involving both V and O, suggest that the magneto-dielectric effect in K2V3O8 is driven by strong lattice coupling.
description: Zipped file containing 8 pages, 12 figures, in press PRB
ASSESSMENT OF GROUNDWATER QUALITY IN RURAL AREAS OFTALUKA DOKRI, SINDH, PAKISTAN, THROUGH PHYSICOCHEMICAL PARAMETERS
Creators: name: Zafarullah Jamali, Mir
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 401102
subject: Environmentally sustainable engineering

description: Groundwater quality is at high risk throughout the world including Sindh province in Pakistan. A sheer growth in global population, urbanization, mixing of sewage and industrial waste water with groundwater, and other unhygienic activities, are the main sources of groundwater contamination in almost all countries. This research is conducted for the evaluation of groundwater quality of Taluka Dokri based on the physicochemical parameters, and the obtained results revealed that 2.56% of the samples possessed color and odor beyond permissible limit, and about 23% samples were unsuitable for drinking purposes due to the salinity of groundwater samples. Overall, 30.77%, 38.46%, 30.77%, 41%, 100%, 38.46% of samples were unfit for the human consumption based on the high concentration of Ca, Mg, TH, TDS, EC, and Cl respectively. Additionally, results of the analysis of groundwater samples-based SPI approach concluded that around 10.3% of samples were slightly polluted, 66.67% samples were moderately polluted, and 23% samples were highly polluted. Overall, result showed that groundwater in UC Tatri, Baghi Bindi, and Wakro was slightly polluted; groundwater, in UC new Badah, old Badah, and Dokri was extremely polluted; and groundwater in remaining all union councils was moderately polluted, and in these UCs, water needed proper treatment before it is consumed by living beings.
Dark Energy: the Cosmological Challenge of the Millennium
Creators: name: Padmanabhan, T.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Recent cosmological observations suggest that nearly seventy per cent of the energy density in the universe is unclustered and has negative pressure. Several conceptual issues related to the modeling of this component (`dark energy'), which is driving an accelerated expansion of the universe, are discussed with special emphasis on the cosmological constant as the possible choice for the dark energy. Some curious geometrical features of a universe with a cosmological constant are described and a few attempts to understand the nature of the cosmological constant are reviewed.
description: Invited article; to appear in Current Science (special section on Cosmology); revtex4; 3 figs; 13 pages
From Big-Step to Small-Step Semantics and Back with Interpreter Specialisation
Creators: name: Gallagher, John P.
name: Hermenegildo, Manuel
name: Kafle, Bishoksan
name: Klemen, Maximiliano
name: García, Pedro López
name: Morales, José
Publisher: name: arXiv
Year: 2020
Subjects: subject: Programming Languages (cs.PL)
subject: Logic in Computer Science (cs.LO)
subject: Symbolic Computation (cs.SC)
subject: FOS: Computer and information sciences

description: We investigate representations of imperative programs as constrained Horn clauses. Starting from operational semantics transition rules, we proceed by writing interpreters as constrained Horn clause programs directly encoding the rules. We then specialise an interpreter with respect to a given source program to achieve a compilation of the source language to Horn clauses (an instance of the first Futamura projection). The process is described in detail for an interpreter for a subset of C, directly encoding the rules of big-step operational semantics for C. A similar translation based on small-step semantics could be carried out, but we show an approach to obtaining a small-step representation using a linear interpreter for big-step Horn clauses. This interpreter is again specialised to achieve the translation from big-step to small-step style. The linear small-step program can be transformed back to a big-step non-linear program using a third interpreter. A regular path expression is computed for the linear program using Tarjan's algorithm, and this regular expression then guides an interpreter to compute a program path. The transformation is realised by specialisation of the path interpreter. In all of the transformation phases, we use an established partial evaluator and exploit standard logic program transformation to remove redundant data structures and arguments in predicates and rename predicates to make clear their link to statements in the original source program.
description: In Proceedings VPT/HCVS 2020, arXiv:2008.02483
Hedge Effectiveness Forecasting
Creators: name: Dahlgran, Roger A.
name: Ma, Xudong
name: Dahlgran, Roger A.
name: Ma, Xudong
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agricultural Finance
subject: out of sample
subject: post sample
subject: hedging
subject: effectiveness
subject: forecasts
subject: simulation

description: This study focuses on hedging effectiveness defined as the proportionate price risk reduction created by hedging. By mathematical and simulation analysis we determine the following: (a) the regression R2 in the hedge ratio regression will generally overstate the amount of price risk reduction that can be achieved by hedging, (b) the properly computed hedging effectiveness in the hedge ratio regression will also generally overstate the amount of risk reduction that can be achieved by hedging, (c) the overstatement in (b) declines as the sample size increases, (d) application of estimated hedge ratios to non sample data results in an unbiased estimate of hedging effectiveness, (e) application of hedge ratios computed from small samples presents a significant chance of actually increasing price risk by hedging, and (f) comparison of in sample and out of sample hedging effectiveness is not the best method for testing for structural change in the hedge ratio regression.
Screening of Elaeocarpus floribundus fruit extracts for bioactive phytocomponents and antibacterial activity against food-borne bacteria
Creators: name: Sircar, Bijayanta
name: Mandal, Shyamapada
Publisher: name: figshare
Year: 2020
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: 110303 Clinical Microbiology
subject: FOS: Clinical medicine
subject: 60599 Microbiology not elsewhere classified
subject: 110899 Medical Microbiology not elsewhere classified
subject: FOS: Health sciences

description: ABSTRACT
Background: Medicinal plants possess several active components having antimicrobial activity. This study was undertaken to explore the antibacterial activity of Indian olive, Elaeocarpus floribundus, fruit extracts against potential food-borne bacterial isolates.
Methods: The ethanolic extracts of olive seed (OSE) and mesocarp-epicarp (OMeE), and the aqueous extracts of olive seed (AqOSE) and mesocarp-epicarp (AqOMeE) were prepared, and analysed qualitatively for phytochemicals. The antibacterial activity of the extracts against food-borne pathogenic bacteria: Bacillus sp., Bacillus cereus, Enterococcus sp. and Corynebacterium sp., was determined by agar-well diffusion method, and minimum inhibitory concentration (MIC) values by agar dilution method.
Results: The concentration dependent activity of the extracts against the bacteria was recorded with zone diameter of inhibition 6 - 28 mm for ethanolic extracts, and 7 - 23 mm for aqueous extracts. The ethanolic extracts were confirmed positive for the presence of cardiac glycosides, anthraquinone glycosides, steroids, terpenoids and quinones, while cardiac glycosides, anthraquinone glycosides, steroids, terpenoids, quinones and phenol were detected in the aqueous extracts. The MICs of OSE and OMeE ranged 9.375-12.5mg/ml, and 1.875 - 3.125 mg/ml, respectively, for the test bacteria.
Conclusions: The olive fruit extracts contained various bioactive components, and had excellent antibacterial activity against food-borne bacteria. The plant might be useful in the preparation of non-antibiotic antibacterial agents and in the storage of food as well.
Volume Effects on Strangeness Production
Creators: name: Caines, Helen
Publisher: name: arXiv
Year: 2004
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: A study of the yields of strange particles produced in heavy-ion and elementary collisions is presented using preliminary results from the STAR experiment at RHIC. The strange particle production rates, relative to those of p+p, have been proposed as a means of determining an enhancement of strangeness production in heavy-ion collisions. Analysis of results from STAR show that this enhancement measure is reduced, or comparable, when contrasted to that at top CERN SPS energies. A smaller suppression in the p+p yields at RHIC energies due to finite volume effects could be the cause of such a result. By studying the yields as a function of centrality we hope to establish how these effects vary with the volume of the source created.
description: 4 Pages, 2 Figures, Strange Quark Matter 2004 conference proceedings
Reconstructing EUV spectrum of star forming regions from millimeter recombination lines of HI, HeI, and HeII
Creators: name: Murchikova, Lena
name: Murphy, Eric J.
name: Lis, Dariusz C.
name: Armus, Lee
name: de Mink, Selma
name: Sheth, Kartik
name: Zakamska, Nadia
name: Tramper, Frank
name: Bongiorno, Angela
name: Elvis, Martin
name: Kewley, Lisa
name: Sana, Hugues
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The extreme ultraviolet (EUV) spectra of distant star-forming regions cannot be probed directly using either ground- or space-based telescopes due to the high cross-section for interaction of EUV photons with the interstellar medium. This makes EUV spectra poorly constrained. The mm/submm recombination lines of H and He, which can be observed from the ground, can serve as a reliable probe of the EUV. Here we present a study based on ALMA observations of three Galactic ultra-compact HII regions and the starburst region Sgr B2(M), in which we reconstruct the key parameters of the EUV spectra using mm recombination lines of HI, HeI and HeII. We find that in all cases the EUV spectra between 13.6 and 54.4 eV have similar frequency dependence: L_ν~ ν^{-4.5 +/- 0.4}. We compare the inferred values of the EUV spectral slopes with the values expected for a purely single stellar evolution model (Starburst99) and the Binary Population and Spectral Synthesis code (BPASS). We find that the observed spectral slope differs from the model predictions. This may imply that the fraction of interacting binaries in HII regions is substantially lower than assumed in BPASS. The technique demonstrated here allows one to deduce the EUV spectra of star forming regions providing critical insight into photon production rates at λ< 912 A and can serve as calibration to starburst synthesis models, improving our understanding of star formation in distant universe and the properties of ionizing flux during reionization.
description: v1: 18 pages, 5 figures, 1 table, 1 appendix v2: BPASS version 2.1 -> 2.2.1, SB99 tracks explicitly added to figures, evolution with metallicity added, few points clarified. 20 pages, 6 figures, 1 table. Accepted to ApJ
Equivalence transformations and differential invariants of a generalized nonlinear Schrödinger equation
Creators: name: Senthilvelan, M.
name: Torrisi, M.
name: Valenti, A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: By using the Lie's invariance infinitesimal criterion we obtain the continuous equivalence transformations of a class of nonlinear Schrödinger equations with variable coefficients. Starting from the equivalence generators we construct the differential invariants of order one. We apply these latter ones to find the most general subclass of variable coefficient nonlinear Schrödinger equations which can be mapped, by means of an equivalence transformation, to the well known cubic Schrödinger equation. We also provide the explicit form of the transformation.
description: 12 pages
Krumbacher, Karl, Der heilige Georg in der griechischen Überlieferung
Creators: name: Baumstark, Anton
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 10 (1912): Oriens christianus, Band 10
EVALUATING THE SUITABILITY OF GROUNDWATER IN PAKISTAN: AN ANALYSIS OF WATER QUALITY USING SYNTHETIC POLLUTION INDEX (SPI) AND WATER QUALITY INDEX (WQI)
Creators: name: Zafarullah Jamali, Mir
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 401102
subject: Environmentally sustainable engineering
classificationCode: 400513
subject: Water resources engineering
classificationCode: 410503
subject: Groundwater quality processes and contaminated land assessment

description: Groundwater deterioration has become an issue of grave concern. This calamity has engulfed the whole world, including Pakistan. Therefore, this study has evaluated groundwater suitability for drinking purposes at the Union councils of RatoKot and Khairpur Juso regions in Pakistan. Twenty-five water samples were taken from different villages in both union councils, and physicochemical analysis of groundwater samples was conducted. The on-site characteristics include color, taste, and odor, while the laboratory analyzed other parameters. The physicochemical parameters like color, odor, taste, and the intensity of SO4, EC, pH, TH, Ca, Mg, and TDS were determined, and the results of each sample were compared with the recommended limits of the WHO. Groundwater samples were analyzed using two approaches, WQI and SPI indexical techniques. Analysis of groundwater samples based on the physicochemical parameters revealed that all samples had no external color or odor and turbidity below 5 NTU. However, the taste of 68% of samples collected from 17 villages was highly bitter and unfit for drinking. Overall, the results of the analysis summarized that about 100%, 88%, 72%, 68%, 60%, and 52% of the samples possessed concentrations of EC, TDS, Mg, Cl, Ca, TH, and SO4 higher than the allowable limits fixed by the WHO. Assessment of groundwater samples based on the SPI disclosed that 40%, 48%, 8%, and 4% of samples were highly contaminated, slightly contaminated, and moderately contaminated, respectively. The WQI value described that 12%, 36%, 40%, and 12% of the groundwater samples were found unfit for drinking, very poor for consumption, poor water, and good for health, respectively.
Dynamic Decision Making in Agricultural Futures and Options Markets
Creators: name: Mattos, Fabio
name: Garcia, Philip
name: Pennings, Joost M.E.
name: Mattos, Fabio
name: Garcia, Philip
name: Pennings, Joost M.E.
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agricultural Finance
subject: loss aversion
subject: house-money effect
subject: futures
subject: options

description: This paper investigates the dynamics of sequential decision-making in agricultural futures and options markets. Analysis of trading records of 12 traders identified considerable heterogeneity in individual dynamic trading behavior. Using risk measures derived from the deltas and vegas of trader’s portfolios, we find nearly half the traders behavior is consistent with a house-money effect and the other half with loss aversion. These findings correspond closely to expected behavior inferred from elicited utility and probability weighting functions. The results call into question more aggregate findings that discount probability weighting to develop risk measures which support the notion of more uniform, less heterogeneous, behavior. Understanding behavior in a prospect theory context appears to call for investigation of both the probability weighting and utility functions. Our findings also suggest that strategies for loss-averse traders who consolidate gains and avoid using gains in risk-seeking market activities are effective.
In-plane ferromagnetism in charge-ordering $Na_{0.55}CoO_2$
Creators: name: Wang, C. H.
name: Chen, X. H.
name: Wu, T.
name: Luo, X. G.
name: Wang, G. Y.
name: Luo, J. L.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The magnetic and transport properties are systematically studied on the single crystal $Na_{0.55}CoO_2$ with charge ordering and divergency in resistivity below 50 K. A long-range ferromagnetic ordering is observed in susceptibility below 20 K with the magnetic field parallel to Co-O plane, while a negligible behavior is observed with the field perpendicular to the Co-O plane. It definitely gives a direct evidence for the existence of in-plane ferromagnetism below 20 K. The observed magnetoresistance (MR) of 30 % at the field of 6 T at low temperatures indicates an unexpectedly strong spin-charge coupling in triangle lattice systems.
description: 4 pages, 5 figures
The glueball spectrum of SU(3) gauge theory in 3+1 dimension
Creators: name: Athenodorou, Andreas
name: Teper, Michael
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We calculate the low-lying glueball spectrum of the SU(3) lattice gauge theory in 3+1 dimensions for the range of beta up to beta=6.50 using the standard plaquette action. We do so for states in all the representations R of the cubic rotation group, and for both values of parity P and charge conjugation C. We extrapolate these results to the continuum limit of the theory using the confining string tension as our energy scale. We also present our results in units of the r0 scale and, from that, in terms of physical `GeV' units. For a number of these states we are able to identify their continuum spins J with very little ambiguity. We also calculate the topological charge Q of the lattice gauge fields so as to show that we have sufficient ergodicity throughout our range of beta, and we calculate the multiplicative renormalisation of Q as a function of beta. We also obtain the continuum limit of the SU(3) topological susceptibility.
description: 75 pages, 24 tables, 32 figures, extra comments on critical slowing down of topology
Dutch corporate liquidity management: New evidence on aggregation
Creators: name: Bruinshoofd, W. Allard
name: Kool, Clemens J.M.
name: Bruinshoofd, W. Allard
name: Kool, Clemens J.M.
Publisher: name: Unknown
Year: 2004
Subjects: subject: corporate liquidity demand
subject: precautionary liquidity

description: In this paper we investigate Dutch corporate liquidity management in general, and target adjustment behaviour in particular. To this purpose, we use a simple error correction model of corporate liquidity holdings applied to firm-level data for the period 1977-1997. We confirm the existence of long-run liquidity targets at the firm level. We also find that changes in liquidity holdings are driven by short-run shocks as well as the urge to converge towards targeted liquidity levels. The rate of target convergence is higher when we include more firm-specific information in the target. This result supports the idea that increased precision in defining liquidity targets associates with a faster observed rate of target convergence. It also suggests that the slow speeds of adjustment obtained in many macro studies on money demand are artefacts of aggregation bias.
Baumstark, Anton, Die christlichen Literaturen des Orients
Creators: name: Bezold, C.
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 10 (1912): Oriens christianus, Band 10