cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Wheat Forward Contract Pricing: Evidence on Forecast Power and Risk Premia
Creators: name: Shi, Wei
name: Irwin, Scott H.
name: Good, Darrel L.
name: Dietz, Sarah N.
name: Shi, Wei
name: Irwin, Scott H.
name: Good, Darrel L.
name: Dietz, Sarah N.
Publisher: name: Unknown
Year: 2005
Subjects: subject: Marketing
subject: FOS: Economics and business

description: While the risk premium hypothesis in futures markets has been the subject of a long and continuous controversy, the risk premium hypothesis in forward markets is also of interest among economists. The hypothesis is supported by some theoretical arguments and empirical evidence yet remains an open question. We in this study apply a two-equation regression model similar to those used in (Fama and French (1987} and de Roon et al. (1998) to analyze the risk premiums in forward markets, particularly, using the pre-harvest wheat forward markets in Illinois (1982-2004) and Kansas (1990-2004) as an example. The two-equation regression model consists of a forecasting equation, which uses a forward basis during a pre-harvest period to forecast the spot basis at the following harvest period, and a risk premium equation, which uses the forward basis to predict the risk premium to be realized at the harvest. The empirical results show that, first, the average realized risk premiums for Illinois fluctuate around a level during the entirety of a pre-harvest period, while the risk premiums for Kansas show a slight downward trend as time approaches the harvest. The average realized risk premiums are generally positive and bigger for Illinois than for Kansas, but all mean risk premiums are within one units of their corresponding standard deviations. Second, the pre-harvest forward bases have reliable forecasting power for the spot harvest bases and contain information regarding the risk premiums, which strongly recommend estimating risk premiums conditional on forward bases.
A priori and a posteriori error analysis of the lowest-order NCVEM for second-order linear indefinite elliptic problems
Creators: name: Carstensen, Carsten
name: Kho, Rekha
name: Pani, Amiya
Publisher: name: Humboldt-Universität zu Berlin
Year: 2022
Subjects: subject: 65N12
subject: 65N15
subject: 65N30
subject: 65N50
subject: 510 Mathematik

description: The nonconforming virtual element method (NCVEM) for the approximation of the weak solution to a general linear second-order non-selfadjoint indefinite elliptic PDE in a polygonal domain Ω is analyzed under reduced elliptic regularity. The main tool in the a priori error analysis is the connection between the nonconforming virtual element space and the Sobolev space H10(Ω) by a right-inverse J of the interpolation operator Ih. The stability of the discrete solution allows for the proof of existence of a unique discrete solution, of a discrete inf-sup estimate and, consequently, for optimal error estimates in the H1 and L2 norms. The explicit residual-based a posteriori error estimate for the NCVEM is reliable and efficient up to the oscillation terms. Numerical experiments on different types of polygonal meshes illustrate the robustness of an error estimator and support the improved convergence rate of an adaptive mesh-refinement in comparison to the uniform mesh-refinement.
Globular cluster system and Milky Way properties revisited
Creators: name: Bica, Eduardo
name: Bonatto, Charles
name: Barbuy, Beatriz
name: Ortolani, Sergio
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Updated data of the 153 Galactic globular clusters are used to readdress fundamental parameters of the Milky Way. We build a reduced sample, decontaminated of the clusters younger than 10Gyr, those with retrograde orbits and/or evidence of relation to dwarf galaxies. The 33 metal-rich globular clusters of the reduced sample extend basically to the Solar circle and distribute over a region with projected axial-ratios typical of an oblate spheroidal, $\rmΔx:Δy:Δz\approx1.0:0.9:0.4$. The 81 metal-poor globular clusters span a nearly spherical region of axial-ratios $\approx1.0:1.0:0.8$ extending from the central parts to the outer halo. A new estimate of the Sun's distance to the Galactic center is provided, $\rm R_O=7.2\pm0.3 kpc$. The metal-rich and metal-poor radial-density distributions flatten for $\rm R_{GC}\leq2 kpc$ and are well represented both by a power-law with a core-like term and Sérsic's law; at large distances they fall off as $\rm\sim R^{-3.9}$. Both metallicity components appear to have a common origin, which is different from that of the dark matter halo. Structural similarities of the metal-rich and metal-poor radial distributions with the stellar halo are consistent with a scenario where part of the reduced sample was formed in the primordial collapse, and part was accreted in an early period of merging. This applies to the bulge as well, suggesting an early merger affecting the central parts of the Galaxy. We estimate that the present globular cluster population corresponds to $\rm\leq23\pm6%$ of the original one. The fact that the volume-density radial distributions of the metal-rich and metal-poor globular clusters of the reduced sample follow both a core-like power-law and Sérsic's law indicates that we are dealing with spheroidal subsystems in all scales.
description: 14 pages and 6 figures. Astronomy & Astrophysics, accepted on NOv. 28
Estimation of copulas via Maximum Mean Discrepancy
Creators: name: Alquier, Pierre
name: Chérief-Abdellatif, Badr-Eddine
name: Derumigny, Alexis
name: Fermanian, Jean-David
Publisher: name: arXiv
Year: 2020
Subjects: subject: Methodology (stat.ME)
subject: Statistics Theory (math.ST)
subject: Computation (stat.CO)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: This paper deals with robust inference for parametric copula models. Estimation using Canonical Maximum Likelihood might be unstable, especially in the presence of outliers. We propose to use a procedure based on the Maximum Mean Discrepancy (MMD) principle. We derive non-asymptotic oracle inequalities, consistency and asymptotic normality of this new estimator. In particular, the oracle inequality holds without any assumption on the copula family, and can be applied in the presence of outliers or under misspecification. Moreover, in our MMD framework, the statistical inference of copula models for which there exists no density with respect to the Lebesgue measure on $[0,1]^d$, as the Marshall-Olkin copula, becomes feasible. A simulation study shows the robustness of our new procedures, especially compared to pseudo-maximum likelihood estimation. An R package implementing the MMD estimator for copula models is available.
title: Математика. Часть 1
Creators: name: ELS IPR BOOKS
Publisher: name: Ай Пи Ар Медиа
Year: 2021

description: Настоящий практикум охватывает традиционный курс высшей математики в объеме первого семестра первого курса технического вуза. Авторы попытались создать задачник, позволяющий не только стимулировать активную работу студентов с преподавателем на практических занятиях, но и самостоятельно осваивать материал и готовиться к контрольным мероприятиям. Весь материал разбит на модули и разделы, соответствующие ключевым темам алгебры и математического анализа. В каждом разделе приводятся основные определения, понятия, теоремы и формулы и излагаются решения типовых задач и примеров, после которых приведены наборы типовых задач для самостоятельного решения. Ко всем задачам даны ответы. Практикум подготовлен в соответствии с требованиями Федерального государственного образовательного стандарта высшего образования, предъявляемыми к дисциплине «Математика». Предназначен для студентов, получающих высшее образование по техническим направлениям подготовки, а также будет полезен преподавателям технических вузов и широкому кругу читателей, интересующихся данной тематикой.
Efficiently estimating mean, uncertainty and unconstrained large scale fraction of local Universe simulations with paired fixed fields
Creators: name: Sorce, Jenny G.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Provided a random realization of the cosmological model, observations of our cosmic neighborhood now allow us to build simulations of the latter down to the non-linear threshold. The resulting local Universe models are thus accurate up to a given residual cosmic variance. Namely some regions and scales are apparently not constrained by the data and seem purely random. Drawing conclusions together with their uncertainties involves then statistics implying a considerable amount of computing time. By applying the constraining algorithm to paired fixed fields, this paper diverts the original techniques from their first use to efficiently disentangle and estimate uncertainties on local Universe simulations obtained with random fields. Paired fixed fields differ from random realizations in the sense that their Fourier mode amplitudes are fixed and they are exactly out of phase. Constrained paired fixed fields show that only 20% of the power spectrum on large scales (> tens of megaparsecs) is purely random. Namely 80% of it is partly constrained by the large scale / small scale data correlations. Additionally, two realizations of our local environment obtained with paired fixed fields of the same pair constitute an excellent non-biased average or quasi-linear realization of the latter, namely the equivalent of hundreds of constrained simulations. The variance between these two realizations gives the uncertainty on the achievable local Universe simulations. These two simulations will permit enhancing faster our local cosmic web understanding thanks to a drastically reduced required computational time to appreciate its modeling limits and uncertainties.
description: Accepted for publication in MNRAS, 11 pages, 9 figures, 2 tables
Sorting Cattle with Accumulated Data: What is the Accuracy and Economics
Creators: name: Ibarburu, Maro A.
name: Lawrence, John D.
name: Ibarburu, Maro A.
name: Lawrence, John D.
Publisher: name: Unknown
Year: 2005
Subjects: Livestock Production/Industries

description: Increasingly feedlots are managing cattle as individual animals rather than on a pen level basis. As such it is possible to predict an optimal marketing date for each animal. This analysis evaluates the keep-or-sell decision at reimplant time for feedlots cattle approximately 80 days prior to the expected marketing date for the entire group. A model predicting the least profitable cattle in the pen was developed using individual animal data representing over 14,000 cattle fed in 12 Iowa feedlots. It was tested out of sample on an additional 5,000 head to determine the optimal cull rate at reimplant time. The expected profit of sorting and reselling the least profitable cattle was calculated for two different levels of imperfect information and were contrasted against each other as well expost profit. The analysis concludes that there is a potential advantage of predicting the least profitable animals in a pen and re-sell them as heavyfeeder-cattle. It also shows that individual animal identification and management provides additional information and accuracy to apply this practice.
Post-AGB stars as testbeds of nucleosynthesis in AGB stars
Creators: name: Stasinska, G.
name: Szczerba, R.
name: Schmidt, M.
name: Siodmiak, N.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We construct a data base of 125 post-AGB objects (including R CrB and extreme helium stars) with published photospheric parameters (effective temperature and gravity) and chemical composition. We estimate the masses of the post-AGB stars by comparing their position in the (log Teff, log g) plane with theoretical evolutionary tracks of different masses. We construct various diagrams, with the aim of finding clues to AGB nucleosynthesis. This is the first time that a large sample of post-AGB stars has been used in a systematic way for such a purpose and we argue that, in several respects, post-AGB stars should be more powerful than planetary nebulae to test AGB nucleosynthesis. Our main findings are that: the vast majority of objects which do not show evidence of N production from primary C have a low stellar mass (M* < 0.56 Msun); there is no evidence that objects which did not experience 3rd dredge-up have a different stellar mass distribution than objects that did; there is clear evidence that 3rd dredge-up is more efficient at low metallicity. The sample of known post-AGB stars is likely to increase significantly in the near future thanks to the ASTRO-F and follow-up observations, making these objects even more promising as testbeds for AGB nucleosynthesis.
description: 17 pages including 9 figures and 2 tables, accepted in Astronomy and Astrophysics
title: Математика. Часть 2
Creators: name: ELS IPR BOOKS
Publisher: name: Ай Пи Ар Медиа
Year: 2020

description: Настоящий практикум охватывает важнейшие разделы традиционного курса высшей математики, изучаемые во втором семестре первого курса технических вузов. Несмотря на то, что акцент сделан на изложение методов решения ключевых практических задач, издание, наряду с большим количеством разобранных примеров, содержит краткие теоретические сведения по всем заявленным темам, что позволяет использовать практикум как для проведения практических занятий по анализу, так и для самостоятельной подготовки студентов. В каждом разделе издания приводятся основные определения, понятия, теоремы и формулы и излагаются решения типовых задач и примеров, после которых приведены наборы типовых задач для самостоятельного решения. Ко всем задачам приведены ответы. Практикум подготовлен в соответствии с требованиями Федерального государственного образовательного стандарта высшего образования, предъявляемыми к дисциплине «Математика». Предназначен для студентов, получающих высшее образование по техническим направлениям подготовки, а также будет полезен преподавателям технических вузов и широкому кругу читателей, интересующихся данной тематикой.
Forecasting Organic Food Prices: Emerging Methods for Testing and Evaluating Conditional Predictive Ability
Creators: name: Gubanova, Tatiana
name: Lohr, Luanne
name: Park, Timothy A.
name: Gubanova, Tatiana
name: Lohr, Luanne
name: Park, Timothy A.
Publisher: name: Unknown
Year: 2005
Subjects: Demand and Price Analysis

description: Organic farmers, wholesalers, and retailers need price forecasts to improve their decision-making practices. This paper presents a methodology and protocol to select the best performing method from several time and frequency domain candidates. Weekly farmgate prices for organic fresh produce are used. Forecasting methods are evaluated on the basis of an aggregate accuracy measure and several out-of-sample predictive ability tests. A seasonal autoregressive method is recommended for all planning horizons. The role of better price forecasts for the agents who deal in less common organic produce is highlighted. A confirmation for the claim that the organic produce industry needs better farmgate price forecasts to grow is provided.
Effects of the Hubble Parameter on the Cosmic Growth of the First Quasars
Creators: name: Nunes, Rafael C.
name: Pacucci, Fabio
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Supermassive black holes (SMBHs) play a crucial role in the evolution of galaxies and are currently detected up to $z\sim 7.5$. Theories describing black hole (BH) growth are challenged by how rapidly seeds with initial mass $M_{\bullet} \lesssim 10^5 \, \mathrm{M_{\odot}}$, formed at $z \sim 20-30$, grew to $M_{\bullet} \sim 10^9 \, \mathrm{M_{\odot}}$ by $z\sim 7$. Here we study the effects of the value of the Hubble parameter, $H_0$, on models describing the early growth of BHs. First, we note that the predicted mass of a quasar at $z=6$ changes by $> 300$% if the underlying Hubble parameter used in the model varies from $H_0 = 65$ to $H_0 = 74$ km s$^{-1}$Mpc$^{-1}$, a range encompassing current estimates. Employing an MCMC approach based on priors from $z \gtrsim 6.5$ quasars and on $H_0$, we study the interconnection between $H_0$ and the parameters describing BH growth: seed mass $M_i$ and Eddington ratio $f_{\rm Edd}$. Assuming an Eddington ratio of $f_{\rm Edd} = 0.7$, in agreement with previous estimates, we find $H_0 = 73.6^{+1.2}_{-3.3}$ km s$^{-1}$Mpc$^{-1}$. In a second analysis, allowing all the parameters to vary freely, we find $\log(M_{i}/\mathrm{M_{\odot}}) > 4.5$ (at 95% CL), $H_0 = 74^{+1.5}_{-1.4}$ km s$^{-1}$Mpc$^{-1}$ and $f_{\rm Edd}=0.77^{+0.035}_{-0.026}$ at 68% CL. Our results on the typical Eddington ratio are in agreement with previous estimates. Current values of the Hubble parameter strongly favour heavy seed formation scenarios, with $M_i \gtrsim 10^4 \, \mathrm{M_{\odot}}$. In our model, with the priors on BH masses of quasars used, light seed formation scenarios are rejected at $\sim 3σ$.
description: Accepted for publication in MNRAS. 7 pages, 4 figures
Hedging Cash Flows from Commodity Processing
Creators: name: Dahlgran, Roger A.
name: Dahlgran, Roger A.
Publisher: name: Unknown
Year: 2005
Subjects: subject: Agribusiness
subject: Marketing
subject: FOS: Economics and business

description: Agribusinesses make long-term plant-investment decisions based on discounted cash flow. It is therefore incongruous for an agribusiness firm to use cash flow as a plant-investment criterion and then to completely discard cash flow in favor of batch profits as an operating objective. This paper assumes that cash flow and its stability is important to commodity processors and examines methods for hedging cash flows under continuous processing. Its objectives are (a) to determine how standard hedging models should be modified to hedge cash flows, (b) to outline the differences between cash flow hedging and profit hedging, and (c) to determine the effectiveness of hedging in reducing cash flow variability. A cash flow hedging methodology is developed. This methodology is similar to that used for batch profit hedging. This methodology balances the daily cash flow destabilizing effect of futures positions against the periodic cash flow destabilizing effect of cash price changes. The resulting cash flow hedges are simulated for soybean processors. These hedges are less effective than batch profit hedging. The reduction in cash flow variance achieved through hedging, though small, is nonetheless statistically significant.
LostNet: A smart way for lost and find
Creators: name: zhou, meihua
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 460299
subject: Artificial intelligence not elsewhere classified

description: Due to the enormous population growth of cities in recent years, objects are frequently lost and unclaimed on public transportation, in restaurants, or any other public area. While services like Find My iPhone can easily identify lost electronic devices, more valuable objects cannot be tracked intelligently, making it impossible for administrators to reclaim a large number of lost and found items on time. We present a method that significantly reduces the complexity of searching by comparing previous images of lost and recovered things provided by the owner with photos taken when registered lost and found items are received. In this research, we primarily design a photo matching network by combining the transfer learning method of MobileNetV2 with CBAM（Convolutional Block Attention Module） and using the Internet framework to develop an online lost and found image identification system. Our implementation gets a testing accuracy of 96.8% using only 665.12M GLFOPs and 3.5M training parameters. It can recognize practice images and can be run on a regular laptop.
lostnet
Creators: name: zhou, meihua
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 460299
subject: Artificial intelligence not elsewhere classified

description: Due to the enormous population growth of cities in recent years, objects are frequently lost and unclaimed on public transportation, in restaurants, or any other public area. While services like Find My iPhone can easily identify lost electronic devices, more valuable objects cannot be tracked intelligently, making it impossible for administrators to reclaim a large number of lost and found items on time. We present a method that significantly reduces the complexity of searching by comparing previous images of lost and recovered things provided by the owner with photos taken when registered lost and found items are received. In this research, we primarily design a photo matching network by combining the transfer learning method of MobileNetV2 with CBAM（Convolutional Block Attention Module） and using the Internet framework to develop an online lost and found image identification system. Our implementation gets a testing accuracy of 96.8% using only 665.12M GLFOPs and 3.5M training parameters. It can recognize practice images and can be run on a regular laptop.
Correlator Analysis of Multiparticle Events
Creators: name: Amelin, N.
name: Filip, P.
name: Lednicky, R.
name: Pachr, M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: A procedure for the evaluation of correlators of any order in a reasonable computer time is presented. Connection between correlators and fluctuations of the event mean values of observables is discussed. Extension of the procedure to event-by-event approach is suggested. The usefulness of the method is demonstrated using the events simulated within various models of multipaticle production.
description: LaTeX, 15 pages including 4 tables
Portfolio Diversification with Commodity Futures: Properties of Levered Futures
Creators: name: Egelkraut, Thorsten M.
name: Woodard, Joshua D.
name: Garcia, Philip
name: Pennings, Joost M.E.
name: Egelkraut, Thorsten M.
name: Woodard, Joshua D.
name: Garcia, Philip
name: Pennings, Joost M.E.
Publisher: name: Unknown
Year: 2005
Subjects: subject: Marketing
subject: FOS: Economics and business

description: This study extends previous work on the impact of commodity futures on portfolio performance by explicitly incorporating levered futures into the portfolio optimization problem. Using data on nine individual commodity futures and one aggregate index from 1994-2003, we find that collateralized and levered futures strategies perform similarly in an ex-post context. Significant differences between the approaches emerge however when constraints on investment behavior exist. Further, levered futures do not result in a prohibitive number of margin calls. The investment performances of the collateralized and the levered strategies vary little across different rebalancing intervals, and frequent portfolio rebalancing does not necessarily result in superior performance.
title: Анализ финансового состояния предприятия
Creators: name: ELS IPR BOOKS
Publisher: name: Профобразование, Ай Пи Ар Медиа
Year: 2021

description: В учебном пособии рассмотрены показатели финансовой аналитики, продемонстрированы примеры вычислений, их применение для инновационно-ориентированных предприятий, развитие в финансово-кредитной сфере и четкие рекомендации для их применения при принятии экономических решений с указанием модели и методики, которую целесообразно использовать (интегральный показатель). Подготовлено с учетом требований Федерального государственного образовательного стандарта среднего профессионального образования. Учебное пособие будет полезно для студентов укрупненной группы специальностей 38.00.00 «Экономика и управление», изучающих дисциплины «Анализ финансово-хозяйственной деятельности», «Экономический анализ». Издание может представлять интерес для специалистов в области финансового управления предприятием.
Study of galaxies on large-scale filaments in simulations
Creators: name: Singh, Ankit
name: Mahajan, Smriti
name: Bagla, J. S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We use data from the Evolution and Assembly of GaLaxies in their Environment (EAGLE) cosmological simulation to study properties of galaxies in the cosmic web. Galaxies become more redder and form stars at a lower rate relative to their counterparts further away from the cylindrical axis of the large-scale filaments. These trends are particularly strong for galaxies with $M_*/M_{\odot}\lesssim10^{10}$. We also find that at distances $<0.5$ Mpc from the spine of the filaments, the median gas and stellar mass fraction in filament galaxies rises sharply with decreasing distance from the spine of the filament. These results, together with matching trends in the SFR/$M_*$ and the $g-r$ colour of filament galaxies suggest that (i) the intrafilamentary gas condenses into the filament galaxies thus fuelling star formation in them, and (ii) increased number density of galaxies closer to the central axis of the filament enhances the rate of gravitational interactions among filament galaxies closer to the spine.
description: 12 pages, 12 figures, 3 tables. Accepted for publication in the MNRAS
title: Анализ и диагностика финансового состояния предприятия
Creators: name: ELS IPR BOOKS
Publisher: name: Ай Пи Ар Медиа
Year: 2021

description: В учебном пособии рассмотрены показатели финансовой аналитики, продемонстрированы примеры вычислений для инновационно ориентированных предприятий, развитие финансово-кредитной сферы, представлены рекомендации по их применению при принятии экономических решений, указаны модели и методики, которые целесообразно использовать (интегральный показатель). Подготовлено в соответствии с Федеральным государственным образовательным стандартом высшего образования. Издание предназначено для изучения дисциплины «Анализ и диагностика финансово-хозяйственной деятельности на предприятии (в организации)» студентами высших учебных заведений направления подготовки 09.03.03 «Прикладная информатика», укрупненной группы специальностей и направлений подготовки 38.00.00 «Экономика и управление», а также слушателей дополнительной профессиональной программы переподготовки «Экономика: моделирование экономических процессов и управление фирмой». Учебное пособие может представлять интерес для руководителей предприятий, финансовых аналитиков и научных работников.
CMC-Slicings of Kottler-Schwarzschild-de Sitter Cosmologies
Creators: name: Beig, Robert
name: Heinzle, J. Mark
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: There is constructed, for each member of a one-parameter family of cosmological models, which is obtained from the Kottler-Schwarzschild-de Sitter spacetime by identification under discrete isometries, a slicing by spherically symmetric Cauchy hypersurfaces of constant mean curvature. These slicings are unique up to the action of the static Killing vector. Analytical and numerical results are found as to when different leaves of these slicings do not intersect, i.e. when the slicings form foliations.
description: 39 pages, 14 figures; some remarks added, to appear in Commun. Math. Phys
title: Математические модели рынка ценных бумаг
Creators: name: ELS IPR BOOKS
Publisher: name: Ай Пи Ар Медиа
Year: 2021

description: В представленном учебном пособии рассмотрены следующие разделы финансового моделирования: модели финансовой аналитики рынка ценных бумаг, модели финансового мониторинга отчетности, эконометрические модели, оптимизационные модели, модели интегрального ранжирования компаний. Подготовлено в соответствии с Федеральным государственным образовательным стандартом высшего образования. Учебное пособие будет полезно для студентов, обучающихся по направлениям подготовки 09.03.03 «Прикладная информатика» (бакалавриат), 38.03.01 «Экономика» (бакалавриат), 38.04.01 «Экономика» (магистратура), изучающих дисциплины «Методы финансовых и коммерческих расчетов», «Математические модели рынка ценных бумаг», «Фундаментальный и технический анализ рынка ценных бумаг», а также для слушателей дополнительной профессиональной программы переподготовки «Экономика: моделирование экономических процессов и управление фирмой».
Digital vs. impreso: Impacto del medio en el entrenamiento en estrategias de comprensión lectora
Creators: name: Peña, Andrés
Publisher: name: Universidad de La Salle
Year: 2023

description: The effectiveness of delivering a course in a digital medium, for the improvement of reading comprehension, was evaluated, in contrast to the delivery of this course by means of printed materials. An experimental study was carried out with 33 ninth grade students of basic education, randomly assigned to the control and experimental groups, with pretest and posttest measures. To determine the variation in comprehension, the CompLEC test and the battery of tests of the reading processes PROLEC-SE-R are used. A positive increase in comprehension and associated reading processes was evidenced, without statistically significant differences between the two groups.
Analytic integration of soft and collinear radiation in factorised QCD cross sections at NNLO
Creators: name: Magnea, Lorenzo
name: Pelliccioli, Giovanni
name: Signorile-Signorile, Chiara
name: Torrielli, Paolo
name: Uccirati, Sandro
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Within the framework of local analytic sector subtraction, we present the full analytic integration of double-real and real-virtual local infrared counterterms that enter NNLO QCD computations with any number of massless final-state partons. We show that a careful choice of phase-space mappings leads to simple analytic results, including non-singular terms, that can be obtained with conventional integration techniques.
description: 42 pages, matches version published in JHEP
Forecasting Livestock Feed Cost Risks Using Futures and Options
Creators: name: Chen, Gang
name: Roberts, Matthew C.
name: Roe, Brian E.
name: Chen, Gang
name: Roberts, Matthew C.
name: Roe, Brian E.
Publisher: name: Unknown
Year: 2005
Subjects: subject: Livestock Production/Industries
subject: Marketing
subject: FOS: Economics and business

description: The costs of corn- and soybean-based feeds compose a substantial proportion of the variable costs faced by both mainstream and emergent confined livestock producers. This research develops a method to provide a joint distribution of prices of corn and soybean meal at a future time. Black's 1976 option model and stochastic volatility jump diffusion (SVJD) model are compared in volatility forecasting performance. In general, SVJD is superior to Black's model, though their performance is both commodity-specific and forecasting horizon specific.
Comparing Sentinel-2 surface reflectance: ESA L2A with JRSRP
Creators: name: Flood, Neil
Publisher: name: figshare
Year: 2020
Subjects: subject: 49999 Earth Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences

description: Report to the Australian Joint Remote Sensing Research Program (JRSRP), comparing ESA's Sentinel-2 Level-2A surface reflectance with that produced by JRSRP's existing methods.
ECONOMIC IMPACT OF ENVIRONMENTAL HEALTH RISKS ON HOUSE VALUES IN SOUTHEAST REGION: A COUNTY-LEVEL ANALYSIS
Creators: name: Ho, Sa Chau
name: Hite, Diane
name: Ho, Sa Chau
name: Hite, Diane
Publisher: name: Unknown
Year: 2004
Subjects: Environmental Economics and Policy

description: A simultaneous model of house values, cancer mortality and total releases is simultaneously estimated to study effects of environmental health risks. Health risks include county level total releases, number of Superfund sites and cancer mortality in Southeastern U.S. Benefits of superfund cleanup and reduced releases are also estimated.
CONCENTRATION, VULNERABILITY AND ADJUSTMENT: RURAL TEXTILE AND APPAREL EMPLOYMENT AND THE EXPIRATION OF IMPORT QUOTAS
Creators: name: Wojan, Timothy R.
name: Wojan, Timothy R.
Publisher: name: Unknown
Year: 2004
Subjects: Community/Rural/Urban Development
Labor and Human Capital

description: The paper documents the degree of concentration of textile and apparel employment in rural countries, assesses the vulnerability to job loss by detailed industry in light of the expiration of import quotas, and assesses the potential for adjustment of displaced workers.
Theatrical images in Bergman’s films
Creators: name: Bjartmarsdottir Sveinbjornsson, Anna
Publisher: name: University of British Columbia
Year: 2009

description: The purpose of this thesis is to examine the theatricality in a selection of Ingmar Bergman's films. First, I define what I mean by theatricality. I establish four theatrical elements or categories to look for in Bergman's films: mise-en-scene, characters, influence, playwithin- a-play. I then give a brief overview of Bergman's work in the theater and in the cinema. Next, I analyze three films according to the model that I have made: Sawdust and Tinsel, Fanny and Alexander and After the Rehearsal. I find that all three films contain these elements and discuss what they are. I then discuss Bergman's other films, pointing out the prevalence of these theatrical elements. Finally, I conclude that Bergman makes extensive use of theatrical elements in order to convey universal human concerns. His intimate knowledge of this environment allows him to portray these concerns in a convincing manner.
The shape of a flexible polymer in a cylindrical pore
Creators: name: Morrison, G.
name: Thirumalai, D.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We calculate the mean end-to-end distance ($R$) of a self-avoiding polymer encapsulated in an infinitely long cylinder with radius $D$. A self-consistent perturbation theory is used to calculate $R$ as a function of $D$ for impenetrable hard walls and soft walls. In both cases, $R$ obeys the predicted scaling behavior in the limit of large and small $D$. The crossover from the three dimensional behavior ($D\to\infty$) to the fully stretched one dimensional case ($D\to 0$) is non-monotonic. The minimum value of $R$ is found at $D\sim 0.46 R_F$, where $R_F$ is the Flory radius of $R$ at $D \to \infty$. The results for soft walls map onto the hard wall case with a larger cylinder radius.
description: 8 pages, 2 figures, to be published in the Journal of Chemical Physics
Hyperentanglement in structured quantum light
Creators: name: Graffitti, Francesco
name: D'Ambrosio, Vincenzo
name: Proietti, Massimiliano
name: Ho, Joseph
name: Piccirillo, Bruno
name: de Lisio, Corrado
name: Marrucci, Lorenzo
name: Fedrizzi, Alessandro
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Entanglement in high-dimensional quantum systems, where one or more degrees of freedom of light are involved, offers increased information capacities and enables new quantum protocols. Here, we demonstrate a functional source of high-dimensional, noise-resilient hyperentangled states encoded in time-frequency and vector-vortex structured modes, which in turn carry single-particle entanglement between polarisation and orbital angular momentum. Pairing nonlinearity-engineered parametric downconversion in an interferometric scheme with spin-to-orbital-angular-momentum conversion, we generate highly entangled photon pairs at telecom wavelength that we characterise via two-photon interference and quantum state tomography, achieving near-unity visibilities and fidelities. While hyperentanglement has been demonstrated before in photonic qubits, this is the first instance of such a rich entanglement structure involving spectrally and spatially structured light, where three different forms of entanglement coexist in the same biphoton state.
description: 5 pages, 4 figures, Supplement: 6 pages, 2 figures
อัฐคณะแห่งฉันท์
Creators: name: โชษิตา มณีใส
Publisher: name: คณะศิลปศาสตร์ มหาวิทยาลัยธรรมศาสตร์
Year: 2005
Subjects: -

description: วรรณวิทัศน์, 5, พฤศจิกายน, 5-17
TESTING FOR SEPARABILITY AND STRUCTURAL CHANGE IN URBAN CHINESE FOOD DEMAND
Creators: name: Dong, Fengxia
name: Fuller, Frank H.
name: Dong, Fengxia
name: Fuller, Frank H.
Publisher: name: Unknown
Year: 2004
Subjects: Consumer/Household Economics

description: This paper estimates and tests separable demand specifications in food expenditures by urban consumers in China. Both parametric and nonparametric techniques are employed to obtain information about shifts in consumer preferences and appropriate commodity groupings. The results have implications for past and future research and policy analysis.
โคลงและกาพย์ห่อโคลงสมัยกรุงศรีอยุธยาตอนกลาง
Creators: name: วรางคณา ศรีกำเหนิด
Publisher: name: คณะศิลปศาสตร์ มหาวิทยาลัยธรรมศาสตร์
Year: 2005
Subjects: -

description: วรรณวิทัศน์, 5, พฤศจิกายน, 18-39
title: Enacting a limit case of autonomous service-learning: insights from an ethnographic inquiry into a contemporary application of the pedagogy
Creators: name: Semler, Mirko
Publisher: name: University of St Andrews
Year: 2017

description: Service-learning (SL) is a socially embedded and experience-based pedagogy that develops the link between theory and practice through community engagement. It fosters learning outcomes for students and benefits for community members. This thesis builds on recent applications of the pedagogy and advances our understanding of SL by studying a limit case of student autonomy in the absence of faculty intervention. Student-community and peer-to-peer relationships are particularly influential on students’ lived experience if their interactions are unmediated by educators. This thesis firstly explores how students enact SL if left to their own devices. Secondly, by adopting a relational embeddedness perspective, it investigates the influence of student-community and peer-to-peer relations on participants’ learning experience. An organisational (“at-home”) ethnography in a student-led social enterprise yielded insights into the two streams of research. The findings suggest that students’ learning process consisted of a blend of emergent and deliberate micro learning processes that highlight the importance of - among other components of students’ learning experience - role enactment, student autonomy, peer engagement, informal learning, and community co-education. With regards to the relationality of this limit case of SL, community and peer relations had an enabling and constraining influence on student learning. The findings further speak to the causality of such impact and suggest that the nature of inter-personal relationships determined the effects they had on students’ experiential basis for learning. These findings contribute to the debate about the promise, effectiveness, and principles of SL in business and management education by problematizing student autonomy and faculty intervention. Moreover, this thesis responds to a gap in the literature and sheds light on the relationality of the pedagogy.
Revisiting dual AGN candidates with spatially resolved LBT spectroscopy -- The impact of spillover light contamination
Creators: name: Husemann, B.
name: Heidt, J.
name: De Rosa, A.
name: Vignali, C.
name: Bianchi, S.
name: Bogdanović, T.
name: Komossa, S.
name: Paragi, Z.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The merging of supermassive black holes (SMBHs) is a direct consequence of our hierarchical picture of galaxy evolution. It is difficult to track the merging process of SMBHs during mergers of galaxies as SMBHs are naturally difficult to observe. We want to characterise and confirm the presence of two independent active galactic nuclei (AGN) separated by a few kiloparsec in seven strongly interacting galaxies previously selected from the Sloan Digital Sky Survey (SDSS) as Seyfert-Seyfert pairs based on emission-line ratio diagnostics. Optical slit spectra taken with MODS at the Large Binocular Telescope (LBT) are presented to infer the detailed spatial distribution of optical emission lines, and their line ratios and AGN signatures with respect to the host galaxies, thereby quantifying the impact of beam smearing and large fibre apertures on the spectra captured by the SDSS. We find that at most two of the seven targets actually retain a Seyfert-Seyfert dual AGN, whereas the others may be more likely powered by post-AGB stars in retired galaxies or through shocks in the ISM based on spatially resolved optical line diagnostics. The major cause of this discrepancy is a bias caused by the spillover of flux from the primary source in the secondary SDSS fibre which can be more than an order of magnitude at <3" separations. Previously reported extremely low X-ray-to-[\ion{O}{iii}] luminosity ratios may be explained by this misclassification, as can heavily obscured AGN for the primaries. We also find that the nuclei with younger stellar ages host the primary AGN. Studies of close dual AGN selected solely from fibre-based spectroscopy can create severe biases in the sample selection and interpretation of the results. Spatially resolved spectroscopy should ideally be used in the future to characterise such compact systems together with multi-wavelength follow-up observations.
description: 15 pages, 8 figures, A&A in press
Gluon production and diffraction in the dipole picture
Creators: name: Marquet, Cyrille
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Using the eikonal approximation, we show that inclusive gluon production is related to the scattering of a gluon-gluon dipole while diffractive gluon production in DIS is related to a two-$q\bar q$ dipole scattering amplitude. Hence diffractive photon dissociation cross-sections are observables that provide potential information on dipole correlations, which represent an open issue in high-energy QCD.
description: 4 pages, 2 figures, Proceedings of the 10th International Baryons Conference (Baryons04), Ecole Polytechnique, Palaiseau, France, October 25-29 2004
Towards Identifying Human Actions, Intent, and Severity of APT Attacks Applying Deception Techniques -- An Experiment
Creators: name: Chacon, Joel
name: McKeown, Sean
name: Macfarlane, Richard
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: Attacks by Advanced Persistent Threats (APTs) have been shown to be difficult to detect using traditional signature- and anomaly-based intrusion detection approaches. Deception techniques such as decoy objects, often called honey items, may be deployed for intrusion detection and attack analysis, providing an alternative to detect APT behaviours. This work explores the use of honey items to classify intrusion interactions, differentiating automated attacks from those which need some human reasoning and interaction towards APT detection. Multiple decoy items are deployed on honeypots in a virtual honey network, some as breadcrumbs to detect indications of a structured manual attack. Monitoring functionality was created around Elastic Stack with a Kibana dashboard created to display interactions with various honey items. APT type manual intrusions are simulated by an experienced pentesting practitioner carrying out simulated attacks. Interactions with honey items are evaluated in order to determine their suitability for discriminating between automated tools and direct human intervention. The results show that it is possible to differentiate automatic attacks from manual structured attacks; from the nature of the interactions with the honey items. The use of honey items found in the honeypot, such as in later parts of a structured attack, have been shown to be successful in classification of manual attacks, as well as towards providing an indication of severity of the attacks
Examples of Ergodic Capacity Analysis of RIS-Aided Systems with Spatially Correlated Channels
Creators: name: Tanash, Islam
name: Riihonen, Taneli
Publisher: name: Zenodo
Year: 2022

description: This is supplementary material for the publication: I. M. Tanash and T. Riihonen, "Ergodic Capacity Analysis of RIS-Aided Systems with Spatially Correlated Channels," in IEEE International Conference on Communications., May 2022. The provided material demonstrates examples of ergodic capacity analysis of RIS-aided systems over correlated channels. In particular, the material includes a dataset that contains the sets of the optimized coefficients which correspond to the novel logarithmic approximation ( Eq. 18 in the paper) of the ergodic capacity with four terms (N=4). In particular, these coefficients are used to plot the approximation of the ergodic capacity for the non-central chi-square and the Gamma distributions with 100 reflecting elements (M=100) and 400 reflecting elements (M=400) with the network setup determined in Section IV. It is referred to the case with M=100 as EXP1 and to the case with M=400 as EXP2 in the dataset. A Matlab script (Example.m) is also included in the supplementary material as an example to illustrate the ergodic capacity shown by figure Example.jpg (Fig. 3 in the paper) after extracting the corresponding coefficients from the provided dataset.
Conditioning of ictal and interictal behaviors in rats by amygdala kindling : context as the conditional stimulus
Creators: name: Barnes, Steven John
Publisher: name: University of British Columbia
Year: 2009

description: We assessed the ability of contextual conditional stimuli that are normally present during the course of kindling to modulate both motor seizures and interictal behavior. Rats received 53 stimulations to the left basolateral amygdala in one context (CS+) and 53 sham stimulations (The lead was attached but no current was delivered.) in another context (CS-), quasirandomly over 54 days. We observed 3 kinds of conditional effects. First, after several stimulations, less ambulatory activity, more freezing, and less rearing reliably occurred in the CS+ context than in the CS- context. Second, after 45 stimulations, all of the rats chose the CS- context over the CS+ context in a conditioned place-preference test. Third, when the rats were finally stimulated in the CS- context, their motor seizures were less severe in several respects: Latencies were longer, motor seizures were shorter, convulsive patterns were of a lower class, and there were fewer falls.
title: Математическое моделирование производственных процессов
Creators: name: ELS IPR BOOKS
Publisher: name: Вузовское образование
Year: 2021

description: В учебном пособии изложены общие теоретические вопросы моделирования, сведения из теории графов, рассмотрены основные виды оптимизационных задач и способы их решения. Приведены примеры расчета и моделирования основных характеристик и параметров систем массового обслуживания; рассмотрены фундаментальные вопросы теории планирования эксперимента. Издание содержит лабораторный практикум и варианты индивидуальных заданий по основным разделам курса. Учебное пособие подготовлено с учетом требований Федерального государственного образовательного стандарта высшего образования. Предназначено для магистрантов, обучающихся по направлению подготовки 15.04.05 «Конструкторско-технологическое обеспечение машиностроительных производств», изучающих дисциплину «Математическое моделирование производственных процессов». Издание может быть полезно для бакалавров направления подготовки 15.03.05 «Конструкторско-технологическое обеспечение машиностроительных производств», изучающих дисциплины «Математическое моделирование процессов в машиностроении», «Математическое моделирование технологических процессов», «Математическое моделирование автоматизированных производств».