cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Optimal Error Pseudodistributions for Read-Once Branching Programs
Creators: name: Chattopadhyay, Eshan
name: Liao, Jyun-Jie
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computational Complexity (cs.CC)
subject: FOS: Computer and information sciences

description: In a seminal work, Nisan (Combinatorica'92) constructed a pseudorandom generator for length $n$ and width $w$ read-once branching programs with seed length $O(\log n\cdot \log(nw)+\log n\cdot\log(1/\varepsilon))$ and error $\varepsilon$. It remains a central question to reduce the seed length to $O(\log (nw/\varepsilon))$, which would prove that $\mathbf{BPL}=\mathbf{L}$. However, there has been no improvement on Nisan's construction for the case $n=w$, which is most relevant to space-bounded derandomization. Recently, in a beautiful work, Braverman, Cohen and Garg (STOC'18) introduced the notion of a pseudorandom pseudo-distribution (PRPD) and gave an explicit construction of a PRPD with seed length $\tilde{O}(\log n\cdot \log(nw)+\log(1/\varepsilon))$. A PRPD is a relaxation of a pseudorandom generator, which suffices for derandomizing $\mathbf{BPL}$ and also implies a hitting set. Unfortunately, their construction is quite involved and complicated. Hoza and Zuckerman (FOCS'18) later constructed a much simpler hitting set generator with seed length $O(\log n\cdot \log(nw)+\log(1/\varepsilon))$, but their techniques are restricted to hitting sets. In this work, we construct a PRPD with seed length $$O(\log n\cdot \log (nw)\cdot \log\log(nw)+\log(1/\varepsilon)).$$ This improves upon the construction in [BCG18] by a $O(\log\log(1/\varepsilon))$ factor, and is optimal in the small error regime. In addition, we believe our construction and analysis to be simpler than the work of Braverman, Cohen and Garg.
Una Rosa per Juice
Creators: Valentina Guglielmo
Publisher: name: Media Inaf
Year: 2021

Aggiungere obiettivi scientifici a una missione spaziale proponendo una deviazione della sua traiettoria. È questo l’oggetto di un’idea che un gruppo di astronomi ha proposto all’Esa per la missione Juice. Obiettivo: l’asteroide Rosa. Ne parliamo con una delle scienziate che hanno firmato la proposta, Alice Lucchetti dell’Inaf di Padova
The impact of college for women: Perspectives from the 1949 Texas State College for Women graduating class
Creators: name: Soller, Janet Flanagan
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 39
subject: Education
classificationCode: 3902
subject: Education policy, sociology and philosophy
classificationCode: 3903
subject: Education systems

description: The purpose of this study was to collect information about first-generation female college graduates. The 1949 Texas State College of Texas (TSCW) graduating class was asked to self-report the reasons for selecting, persisting, and valuing their college education over time. Two questionnaires were mailed to the 1949 TSCW graduating class. The first mail questionnaire had a response rate of 66% (n = 167) and collected information about educational attainments of parents, husbands, and children. From the respondents, a purposeful sampling (n = 71) was selected to complete an in-depth qualitative mail questionnaire about selecting, persisting, and valuing college over time. The 1949 TSCW graduating class reported high success rates in college and graduate degree attainment and in accomplishing their life goals. The emerging themes from the data reflected a group of women who valued work and relationships as they selected, persisted, and valued their college degrees over time. Implications suggest that the group of women reflect known benefits of college, including intergenerational transmission and contributed new information to the body of knowledge.
Observation of diffractive orbits in the spectrum of excited NO in a magnetic field
Creators: name: Matzkin, A.
name: Raoult, M.
name: Gauyacq, D.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We investigate the experimental spectra of excited NO molecules in the diamagnetic regime and develop a quantitative semiclassical framework to account for the results. We show the dynamics can be interpreted in terms of classical orbits provided that in addition to the geometric orbits, diffractive effects are appropriately taken into account. We also show how individual orbits can be extracted from the experimental signal and use this procedure to reveal the first experimental manifestation of inelastic diffractive orbits.
description: 4 figs
The impact of college for women: Perspectives from the 1949 Texas State College for Women graduating class
Creators: name: Soller, Janet Flanagan
Publisher: name: American University
Year: 2023

description: The purpose of this study was to collect information about first-generation female college graduates. The 1949 Texas State College of Texas (TSCW) graduating class was asked to self-report the reasons for selecting, persisting, and valuing their college education over time. Two questionnaires were mailed to the 1949 TSCW graduating class. The first mail questionnaire had a response rate of 66% (n = 167) and collected information about educational attainments of parents, husbands, and children. From the respondents, a purposeful sampling (n = 71) was selected to complete an in-depth qualitative mail questionnaire about selecting, persisting, and valuing college over time. The 1949 TSCW graduating class reported high success rates in college and graduate degree attainment and in accomplishing their life goals. The emerging themes from the data reflected a group of women who valued work and relationships as they selected, persisted, and valued their college degrees over time. Implications suggest that the group of women reflect known benefits of college, including intergenerational transmission and contributed new information to the body of knowledge.
Factors that affect the management of common pool resources: the case of community forest management in Michoac n, Mexico
Creators: name: Ordonez, P.
name: Balis, K.
name: Ramirez, I.
name: Ordonez, P.
name: Balis, K.
name: Ramirez, I.
Publisher: name: Unknown
Year: 2018
Subjects: Resource/Energy Economics and Policy

description: The purpose of this study is to evaluate the factors that lead to the adoption of legal harvesting of the forest by the communities in the state of Michoac n in Mexico. We construct a theoretical model, where the adoption decision is based on the expected benefits and costs of adoption versus the net benefit of expanding the agricultural frontier or of not controlling access to the forest and allow for it to harvested illegally. Using a panel data set of 1785 communities from 1993 to 2013, we estimate a probit model, where we control for the unobserved time-invariant heterogeneity by using Mundlak s device. We find that the relative distribution of land use between forest and agriculture as well as the elevation and ruggedness of the terrain, have a significant effect, together with a positive effect of the price of pinewood. Furthermore, we find evidence of spatial spillovers for the adoption decision, as a community whose neighbors have previously adopted a forest management plan, is also more likely to adopt. Acknowledgement :
A framework to analyse the resilience of EU farming systems
Creators: name: Meuwissen, M.
name: Meuwissen, M.
Publisher: name: Unknown
Year: 2018
Subjects: Risk and Uncertainty

description: Due to a changing risk environment, resilience of European farming systems can no longer be taken for granted. In this paper we define resilience as maintaining the essential functions of EU farming systems in the face of increasingly complex and volatile economic, social, ecological and institutional risks. The aim of this paper is to develop a comprehensive resilience enabling framework for farming systems building on the concept of adaptive cycles. Three main adaptive cycle processes contributing to the essential functions of EU farming systems are considered: agricultural, farm demographics and governance processes. The framework distinguishes five phases: (1) characterising the farming system, (2) appraising key risks affecting the system, (3) framing the essential functions of the system, (4) assessing resilience over time along a spectrum of robustness, adaptability and transformability, and (5) identifying resilience attributes which contribute to the robustness, adaptability and transformability of the farming system. The framework can be applied by researchers to retrospectively understand the dynamics of sustainability of farming systems, and by decision makers to pro-actively identify differentiated resilience-enhancing strategies across EU farming systems depending on context-specific challenges and available resources. The framework is illustrated for arable farming in the Netherlands. Acknowledgement : This framework is developed and applied within the SURE-Farm (Towards SUstainable and REsilient EU FARMing systems) project, funded by Horizon 2020 (). We thank the whole consortium for their contributions to this framework.
Effects of El Niño on the isotopic characteristics of percipitation across the U.S.
Creators: name: Zauscher, Melanie
name: White, James
name: Barnes, Timothy
name: Lefer, Barry
Publisher: name: University Corporation For Atmospheric Research (UCAR)
Year: 2003

The International Atomic Energy Agency (IAEA) and the World Meteorological Organization (WMO) have studied the distribution of oxygen and hydrogen isotopes in precipitation since the 1960s. However, very few sites in the United States (U.S.) have been studied compared to the rest of the world. Since there are biomes and climates from the U.S. that are unrepresented in the data, the conclusions extrapolated to the U.S. may not be accurate. We have isotopically analyzed weekly precipitation samples from the National Atmospheric Deposition Program (NADP) for 70 U.S. sites between 1989 thru 1994 and for 10 U.S. sites between 1996 thru 2001. d18O was mapped with ArcGIS®. Some of the maps show dramatic differences of d18O up to 2.25 and down to -2.25‰ between El Niño and normal seasons. These d18O differences should be large enough to be seen in paleoclimate records, and should be an important factor in understanding the d18O of atmospheric carbon dioxide. Following the classical interpretation of temperature change, these differences in d18O would correspond to temperature changes of up to 4oC. Temperature differences of this magnitude however, are not seen between El Niño and normal phases. Although some differences in d18O seem to correspond to changes in climatological parameters during El Niño relative to normal phases, other d18O differences are not understood. The analysis of this data will improve the calibration of paleoclimate records, forward the understanding of the modern hydrological cycle, help constrain the budget of greenhouse gases, and aid in the calibration of predictive global climate models.
Ideal Mixing of Paraelectric and Ferroelectric Nematic Phases in Liquid Crystals of Distinct Molecular Species
Creators: name: Chen, Xi
name: Zhu, Zhecong
name: Magrini, Mitchell J.
name: Korblova, Eva
name: Park, Cheol S.
name: Glaser, Matthew A.
name: Maclennan, Joseph E.
name: Walba, David M.
name: Clark, Noel A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: The organic mesogens RM734 and DIO are members of separate molecular families featuring distinct molecular structures. These families, at the present time, are the only ones known to exhibit a ferroelectric nematic liquid crystal (LC) phase. Here we present an experimental investigation of the phase diagram and electro-optics of binary mixtures of RM734 and DIO. We observe paraelectric nematic (N) and ferroelectric nematic (NF) phases in both materials, each of which exhibits complete miscibility across the phase diagram, showing that the paraelectric and ferroelectric are the same phases in RM734 as in DIO. Remarkably, these molecules form ideal mixtures with respect to both the paraelectric-ferroelectric nematic phase behavior and the ferroelectric polarization density of the mixtures, the principal order parameter of the transition. Ideal mixing is also manifested in the orientational viscosity, and the onset of glassy dynamics at low temperature. This behavior is attributable in part to the similarity of their overall molecular shape and net longitudinal dipole moment (~ 11 Debye), and to a common tendency for head-to-tail molecular association. In contrast, the significant difference in molecular structures leads to poor solubility in the crystal phases, enhancing the stability of the ferroelectric nematic phase at low temperature in the mixtures and making possible room temperature electro-optic effects. In the mixtures with excess DIO, an intermediate phase appears via an ultraweak, first-order transition from the N phase, in a narrow temperature range between the paraelectric and ferroelectric nematics.
description: main paper has 24 pages with 5 figures; supplementary information has 14 pages with 8 figures
Solar Orbiter s’allena per l’incontro con il Sole
Creators: Ufficio stampa Inaf
Publisher: name: Media Inaf
Year: 2021

Nel pieno del suo lungo viaggio verso il Sole, la sonda Solar Orbiter ha ben impiegato il tempo attivando i suoi strumenti, verificando il loro corretto funzionamento e raccogliendo le prime misure sia dell’ambiente interplanetario che del Sole e della sua turbolenta atmosfera. I dati raccolti dai dieci strumenti a bordo della sonda sono già così accurati e interessanti da permettere agli scienziati di ottenere risultati di prim’ordine
Empirical Study of Restarted and Flaky Builds on Travis CI
Creators: name: Durieux, Thomas
name: Goues, Claire Le
name: Hilton, Michael
name: Abreu, Rui
Publisher: name: arXiv
Year: 2020
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Continuous Integration (CI) is a development practice where developers frequently integrate code into a common codebase. After the code is integrated, the CI server runs a test suite and other tools to produce a set of reports (e.g., output of linters and tests). If the result of a CI test run is unexpected, developers have the option to manually restart the build, re-running the same test suite on the same code; this can reveal build flakiness, if the restarted build outcome differs from the original build. In this study, we analyze restarted builds, flaky builds, and their impact on the development workflow. We observe that developers restart at least 1.72% of builds, amounting to 56,522 restarted builds in our Travis CI dataset. We observe that more mature and more complex projects are more likely to include restarted builds. The restarted builds are mostly builds that are initially failing due to a test, network problem, or a Travis CI limitations such as execution timeout. Finally, we observe that restarted builds have a major impact on development workflow. Indeed, in 54.42% of the restarted builds, the developers analyze and restart a build within an hour of the initial failure. This suggests that developers wait for CI results, interrupting their workflow to address the issue. Restarted builds also slow down the merging of pull requests by a factor of three, bringing median merging time from 16h to 48h.
Sustainability Literacy Assessment
Creators: name: Crowther, Claire
Publisher: name: The University of British Columbia
Year: 2017

description: Disclaimer: “UBC SEEDS provides students with the opportunity to share the findings of their studies, as well as their opinions, conclusions and recommendations with the UBC community. The reader should bear in mind that this is a student project/report and is not an official document of UBC. Furthermore readers should bear in mind that these reports may not reflect the current status of activities at UBC. We urge you to contact the research persons mentioned in a report or the SEEDS Coordinator about the current status of the subject matter of a project/report.”
MAD Risk Parity Portfolios
Creators: name: Ararat, Çağın
name: Cesarone, Francesco
name: Pınar, Mustafa Çelebi
name: Ricci, Jacopo Maria
Publisher: name: arXiv
Year: 2021
Subjects: subject: Portfolio Management (q-fin.PM)
subject: Risk Management (q-fin.RM)
subject: FOS: Economics and business
subject: 91G10, 91G70 (Primary) 90C11, 90C25, 90C26, 90C90 (Secondary)

description: In this paper, we investigate the features and the performance of the Risk Parity (RP) portfolios using the Mean Absolute Deviation (MAD) as a risk measure. The RP model is a recent strategy for asset allocation that aims at equally sharing the global portfolio risk among all the assets of an investment universe. We discuss here some existing and new results about the properties of MAD that are useful for the RP approach. We propose several formulations for finding MAD-RP portfolios computationally, and compare them in terms of accuracy and efficiency. Furthermore, we provide extensive empirical analysis based on three real-world datasets, showing that the performances of the RP approaches generally tend to place both in terms of risk and profitability between those obtained from the minimum risk and the Equally Weighted strategies.
description: 39 pages, 8 tables, 2 figures
Dusty Molecular Cloud Collapse in the Presence of Alfvén Waves
Creators: name: Falceta-Goncalves, D.
name: Jatenco-Pereira, V.
name: de Juli, M.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: It has been shown that magnetic fields play an important role in the stability of molecular clouds, mainly perpendicularly to the field direction. However, in the parallel direction the stability is a serious problem still to be explained. Interstellar turbulence may allow the generation of Alfvén waves that propagate through the clouds in the magnetic field direction. These regions also present great amounts of dust particles which can give rise to new wave modes, or modify the pre-existing ones. The dust-cyclotron damping affects the Alfvén wave propagation near the dust- cyclotron frequency. On the other hand, the clouds present different grain sizes, which carry different charges. In this sense, a dust particle distribution has several dust-cyclotron frequencies and it will affect a broad band of wave frequencies. In this case, the energy transfer to the gas is more efficient than in the case where the ion-cyclotron damping is considered alone. This effect becomes more important if a power law spectrum is considered for the wave energy flux, since the major part of the energy is concentrated in low-frequency waves. In this work we calculate the dust- cyclotron damping in a dusty and magnetized dwarf molecular cloud, as well as determine the changes in the Alfvén wave flux. Then, we use these results to study the gravitational stability of the cloud. We show that, considering the presence of charged dust particles, the wave flux is rapidly damped due to dust-cyclotron damping. Then the wave pressure acts in a small length scale, and cannot explain the observable cloud sizes, but can explain the existence of small and dense cores.
description: accepted for publication in ApJ
Anthophora (Pyganthophora) crotchii Cresson 1878
Creators: name: Pedro, Diego De
name: Ceccarelli, Fadia Sara
name: Sagot, Philippe
name: López-Reyes, Eulogio
name: Mullins, Jessica L.
name: Mérida-Rivas, Jorge A.
name: Falcon-Brindis, Armando
name: Griswold, Terry
name: Ascher, John S.
name: Gardner, Joel
name: Ayala, Ricardo
name: Vides-Borrell, Eric
name: Vandame, Rémy
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy

description: Anthophora (Pyganthophora) crotchii Cresson, 1878 **
[Holotype: ANSP; ♂ California, USA]
Anthophora crotchii primarily inhabits the CPF and the Columbia Plateau regions. This species marks a new record for Mexico. The BBPT collected one male in March 2021 from the Coastal Sage Matorral within Guadalupe Valley, and a female specimen from the Chaparral in Ojos Negros, BC collected in April 2022 (MABC). See fig. 79.
description: Published as part of Pedro, Diego De, Ceccarelli, Fadia Sara, Sagot, Philippe, López-Reyes, Eulogio, Mullins, Jessica L., Mérida-Rivas, Jorge A., Falcon-Brindis, Armando, Griswold, Terry, Ascher, John S., Gardner, Joel, Ayala, Ricardo, Vides-Borrell, Eric & Vandame, Rémy, 2024, Revealing the Baja California Peninsula's Hidden Treasures: An Annotated checklist of the native bees (Hymenoptera: Apoidea: Anthophila), pp. 1-391 in Zootaxa 5522 (1) on page 138, DOI: 10.11646/zootaxa.5522.1.1, http://zenodo.org/record/13920532
Peanuts: Background for 1990 Farm Legislation
Creators: name: Schaub, James D.
name: Wendland, Bruce
name: Schaub, James D.
name: Wendland, Bruce
Publisher: name: Unknown
Year: 1989
Subjects: subject: Agricultural and Food Policy
subject: Crop Production/Industries
subject: Peanuts
subject: farm program
subject: policies

description: The peanut program has led to surplus production and increasing Government costs throughout most of its history. These problems led to farm legislation in 1977 that initiated a two-price poundage quota peanut program, which was continued under the 1981 and 1985 farm acts. The 1981 Act suspended the peanut acreage allotments and decreased the poundage quota each year to eliminate excess peanuts supported at the higher of the two support prices. The 1985 Act continued many provisions of the 1981 Act but established guidelines for setting the poundage quota to match use. The peanut program will revert to permanent legislation of acreage allotments and parity supports unless a new program is enacted. An important issue for the upcoming farm legislation is whether to continue the current program or to include peanuts under a more general agricultural program.
An analysis of student performance of the Virginia Algebra I Standards of Learning Examination
Creators: name: Wiersma, Laurell Lynda
Publisher: name: American University
Year: 2023

description: This study was designed to predict achievement on the Virginia Algebra 1 Standards of Learning Examination and to investigate additional variables that may influence achievement on the examination. Using data from a Northern Virginia school system administration of the May 2000 exam, a multiple regression model was developed to predict student performance on the state test using four dependent variables: Algebra 1 final grade, Math 8 final grade, Stanford 9 total mathematics score, and race. Gender, free and reduced lunch, English as a second language, and Stanford 9 reading comprehension were not statistically significant variables. In the second part of the study, outliers from the multiple regression were identified and the students were contacted for interviews. These students formed two categories. Category A includes the students that scored significantly higher than the regression model predicted. Category B includes students who scored significantly lower than the model predicted. The semi-stuctured interview investigated the students' experiences in Algebra 1 and on the Algebra 1 SOL examination. Seventeen students from category A and ten students from category B participated in the interviews. The interviews were analyzed to determine the similarities and differences between these two groups. The analysis of the interviews indicated that the students whose performance exceeded the predicted score were self-motivated, independent learners who had some test anxiety. The students who performed at a level lower than their predicted score were much more dependent on their teachers as motivators and disseminators of knowledge. Both groups of students valued the social aspects of school and preferred learning in active environments that used teacher-student discourse, group work, and other investigative methods of learning.
Wool and Mohair: Background for 1990 Farm Legislation
Creators: name: Lawler, John V.
name: Skinner, Robert A.
name: Lawler, John V.
name: Skinner, Robert A.
Publisher: name: Unknown
Year: 1989
Subjects: subject: Agricultural and Food Policy
subject: Livestock Production/Industries
subject: costs and returns
subject: exports
subject: farm programs
subject: imports
subject: mohair
subject: program effects
subject: textile mill use
subject: wool

description: Wool and mohair have been declining industries. Sheep inventories are a fifth of their World War II level; goat numbers are a third of their mid-1960's level. High lamb prices and a strong demand for wool increased the net returns of farmers in the late 1980's. Government payments to wool producers in 1988 were the lowest since 1980 because of a record high wool price. Policymakers have had limited control over wool program costs given the formula-based Government support price, the trend of declining textile market share, rising raw wool textile imports, stagnant lamb and mutton consumption, and the dominance of Australia and New Zealand in the world wool market. Issues for 1990 include whether to continue the program and, if so, the level and method of determining support prices.
Accelerator Experiments for Astrophysics
Creators: name: Ng, Johnny S. T.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Many recent discoveries in astrophysics involve phenomena that are highly complex. Carefully designed experiments, together with sophisticated computer simulations, are required to gain insights into the underlying physics. We show that particle accelerators are unique tools in this area of research, by providing precision calibration data and by creating extreme experimental conditions relevant for astrophysics. In this paper we discuss laboratory experiments that can be carried out at the Stanford Linear Accelerator Center and implications for astrophysics.
description: To be published in the proceedings of the Joint 28th ICFA Workshop on Quantum Aspects of Beam Physics, Hiroshima, Japan, Jan. 7-11, 2003
Additional file 1 of Regret among primary care physicians: a survey of diagnostic decisions
Creators: name: Müller, Beate S.
name: Donner-Banzhoff, Norbert
name: Beyer, Martin
name: Haasenritter, Jörg
name: Müller, Angelina
name: Seifart, Carola
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Immunology
subject: FOS: Clinical medicine
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 1. Questionnaire.
Sawyer-type inequalities for Lorentz spaces
Creators: name: Pérez, Carlos
name: Perdices, Eduard Roure
Publisher: name: arXiv
Year: 2020
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 42B25 (Primary), 46E30 (Secondary)

description: The Hardy-Littlewood maximal operator satisfies the classical Sawyer-type estimate $$ \left \Vert \frac{Mf}{v}\right \Vert_{L^{1,\infty}(uv)} \leq C_{u,v} \Vert f \Vert_{L^{1}(u)}, $$ where $u\in A_1$ and $uv\in A_{\infty}$. We prove a novel extension of this result to the general restricted weak type case. That is, for $p>1$, $u\in A_p^{\mathcal R}$, and $uv^p \in A_\infty$, $$ \left \Vert \frac{Mf}{v}\right \Vert_{L^{p,\infty}(uv^p)} \leq C_{u,v} \Vert f \Vert_{L^{p,1}(u)}. $$ From these estimates, we deduce new weighted restricted weak type bounds and Sawyer-type inequalities for the $m$-fold product of Hardy-Littlewood maximal operators. We also present an innovative technique that allows us to transfer such estimates to a large class of multi-variable operators, including $m$-linear Calderón-Zygmund operators, avoiding the $A_\infty$ extrapolation theorem and producing many estimates that have not appeared in the literature before. In particular, we obtain a new characterization of $A_p^{\mathcal R}$. Furthermore, we introduce the class of weights that characterizes the restricted weak type bounds for the multi(sub)linear maximal operator $\mathcal M$, denoted by $A_{\vec P}^{\mathcal R}$, establish analogous bounds for sparse operators and m-linear Calderón-Zygmund operators, and study the corresponding multi-variable Sawyer-type inequalities for such operators and weights. Our results combine mixed restricted weak type norm inequalities, $A_p^{\mathcal R}$ and $A_{\vec P}^{\mathcal R}$ weights, and Lorentz spaces.
BIBLIOGRAPHY OF RESEARCH SUPPORTING THE URUGUAY ROUND OF THE GATT
Creators: name: Agriculture And Trade Analysis Division
name: Agriculture And Trade Analysis Division
Publisher: name: Unknown
Year: 1989
Subjects: subject: Agricultural and Food Policy
subject: International Relations/Trade
subject: agricultural policy
subject: agricultural trade
subject: trade liberalization

description: The Economic Research Service (ERS) has long been active in analysis of government agricultural policies in the United States and elsewhere. In recent years, much of that analysis has been directed toward the issues under discussion at the Uruguay Round of negotiations on the General Agreement on Tariffs and Trade (GATT). This report lists ERS research that might be useful in evaluating the proposals for policy change now under negotiation at the GATT.
Danzando attorno al buco nero centrale
Creators: Redazione Eso
Publisher: name: Media Inaf
Year: 2021

Osservando con il Very Large Telescope Interferometer dell'Eso alcune stelle mentre orbitano intorno a Sagittarius A* (il buco nero supermassiccio nel cuore della Via Lattea) con un ingrandimento 20 volte maggiore di quanto fosse possibile prima, è stato possibile realizzare la misura finora più precisa della massa del buco nero
Dockage and Foreign Material in the Grading Standards for Wheat Exports
Creators: name: Mercier, Stephanie A.
name: Mercier, Stephanie A.
Publisher: name: Unknown
Year: 1989
Subjects: subject: Agricultural and Food Policy
subject: Crop Production/Industries
subject: International Relations/Trade
subject: Grain quality
subject: grading standards
subject: wheat dockage
subject: foreign material
subject: Federal Grain Inspection Service
subject: economic costs

description: U.S. wheat exports have been compared with that of their export competitors and judged deficient by some importers, who claimed it contained excessive nonwheat material. One suggestion to remedy this problem is to combine dockage and foreign material in wheat grading standards. Estimates of the lost export revenue due to this change range from $5.4 million in treating it as a deductible by weight to $26.75 million for mandated cleaning without resale of screenings.
Occhi puntati sugli asteroidi
Creators: Maura Sandri
Publisher: name: Media Inaf
Year: 2021

La Nasa ha reso disponibile un nuovo strumento di visualizzazione 3D per esplorare in tempo reale gli asteroidi e le comete che si avvicinano alla Terra, oltre che i dettagli delle missioni dedicate, passate e future. Si chiama Eyes on Asteroids e funziona su qualsiasi smartphone, tablet o computer dotato di una connessione internet, senza bisogno di alcun download. Buon divertimento!
Futures, Options, and Farm Programs: Report to Congress on a Study Mandated by the Food Security Act of 1985
Creators: name: Heifner, Richard G.
name: Glauber, Joseph W.
name: Miranda, Mario J.
name: Plato, Gerald E.
name: Wright, Bruce H.
name: Heifner, Richard G.
name: Glauber, Joseph W.
name: Miranda, Mario J.
name: Plato, Gerald E.
name: Wright, Bruce H.
Publisher: name: Unknown
Year: 1990
Subjects: subject: Agricultural and Food Policy
subject: Demand and Price Analysis
subject: Political Economy
subject: Cash forward contracts
subject: deficiency payments
subject: farm programs
subject: Food Security Act of 1985
subject: futures
subject: options
subject: price support

description: Expanded use of futures and options markets by farmers can partly substitute for price support and deficiency payment programs in protecting farmers' incomes. Farmers can broaden their pricing alternatives and partly protect themselves against price declines within the year, but they can gain little interyear income stability by using futures, options, or cash forward contracts. Government programs to expand farmers' use of such contracts generally would not raise or stabilize market prices or farmers' incomes unless Government subsidies were involved. Such subsidies would be difficult to administer and offer few advantages over conventional loan and deficiency payment programs.
Agricultural Policy — The Overlooked Essentials. The Gaps Between Theory and Reality
Creators: name: Stansbury, Dale L.
name: Stansbury, Dale L.
Publisher: name: Unknown
Year: 1990
Subjects: Agricultural and Food Policy

description: Agriculture was one of the earliest focuses of national policy and it continues to be revisited regularly. In spite of long-term attention, there is a persistent perception that national agricultural policy and related programs are not adequate. The historical context of agricultural policy with its unique legacy, popular misconceptions about agriculture that fail to recognize the complexity of agriculture and the underlying policy issues, plus weaknesses in the policy process all contribute to a failure to consider the essentials of a long-range agricultural policy. Because of acute pressures in a few areas, particularly with regard to producer welfare, and limited pressures or recognition of other essentials, agricultural policy has been too narrowly focused. In fact, this has been repeatedly recognized but never adequately treated. The essentials of a national long-range agricultural policy are known and information exists to fully address them; however, it is not being used. The challenge is to close this gap.
Finite time extinction for a class of damped Schr{ö}dinger equations with a singular saturated nonlinearity
Creators: name: Bégout, Pascal
name: Díaz, Jesús Ildefonso
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We present some sharper finite extinction time results for solutions of a class of damped nonlinear Schr{ö}dinger equations when the nonlinear damping term corresponds to the limit cases of some ``saturating non-Kerr law'' $F(|u|^2)u=\frac{a}{\varepsilon+(|u|^2)^α}u,$ with $a\in\mathbb{C},$ $\varepsilon\geqslant0,$ $2α=(1-m)$ and $m\in[0,1).$ To carry out the improvement of previous results in the literature we present in this paper a careful revision of the existence and regularity of weak solutions under very general assumptions on the data. We prove that the problem can be solved in the very general framework of the maximal monotone operators theory, even under a lack of regularity of the damping term. This allows us to consider, among other things, the singular case $m=0.$ We replace the above approximation of the damping term by a different one which keeps the monotonicity for any $\varepsilon\geqslant0$. We prove that, when $m=0,$ the finite extinction time of the solution arises for merely bounded right hand side data $f(t,x).$ This is specially useful in the applications in which the Schr{ö}dinger equation is coupled with some other functions satisfying some additional equations.
Soil Depletion Estimates: Version 2: A User's Guide to a Irsonal Coraputer Model For Estimating Icing-Term Onsite Physical and Economic Impacts of Soil Depletion
Creators: name: Bull, Leonard L.
name: Kugler, Daniel E.
name: Bull, Leonard L.
name: Kugler, Daniel E.
Publisher: name: Unknown
Year: 1990
Subjects: subject: Environmental Economics and Policy
subject: Land Economics/Use
subject: Soil depletion
subject: depletion model
subject: erosion control
subject: soil conservation
subject: conservation practices
subject: physical depletion effects
subject: economic effects
subject: conservation policy
subject: economics of conservation
subject: resource management strategies
subject: onsite depletion effects

description: The Soil Depletion Estimates model produces results that allow comparison of shortrun and longrun impacts on erosion and economic returns from alternative resource management systems. For each specified soil and resource management system, the model generates long-term onsite soil depletion effects and estimates the economic impacts over incremental time periods. This allows the selection of resource management systems based on economic profitability under alternative erosion control Objectives. Prioritizing soil-resource management system combinations for targeting the application of soil erosion control measures is also possible by ranking one of the model output coefficients.
Measuring volatile organic compounds (VOCs) from shrubs with a portable gas chromatograph (MiniCam) and modeling shrubland VOCs with a geographical information system
Creators: name: Bliss, Shaan
name: Guenther, Alex
name: Klinger, Lee
name: Schauffler, Sue
Publisher: name: University Corporation For Atmospheric Research (UCAR)
Year: 2002
Subjects: Atmosphere
Nitrogen oxide
Ozone formation
Isoprene
Monoterpene
Gas chromatograph
Flux levels

Volatile organic compounds (VOCs) are gases that influence the chemical composition of the atmosphere. In a high nitrogen oxide environment VOCs facilitate higher ozone formation and thus can be a hazard to human and plant health. Most VOC studies focus on VOCs produced by trees but little is known about shrubs. The purpose of this study was to determine the amounts of VOC (isoprene and monterpenes) emitted by shrubs. The VOC flux levels of twenty shrub species originating from different ecological habitats around the world were measured using a portable gas chromatograph (MiniCam). Shrubs emissions were sampled using an enclosure system while light, temperature, humidity, and airflow were measured within the enclosure. Shrub flux levels were then incorporated into a global emissions model by using geographical information system (GIS) software ArcView and a global ecoregion database. In addition to the 20 shrub VOC flux estimates, ecoregions categories were used to estimate global shrub VOC emissions. Results from the MiniCam revealed that shrubs emitted considerable amount of isoprene and monoterpenes. The global emission model demonstrated that the following ecoregions emitted the highest monoterpenes: Northern Siberian taiga, Deccan thorn scrub forests, Mediterranean woodlands and forests, Mitchell grass downs, Murray-Darling woodlands and mallee. The following ecoregions emitted the highest Isoprene: Canadian low arctic tundra, Mediterranean woodlands and forests, Eastern Anatolian montane steppe, Tian Shan montane steppe and meadow, Qionglai-Minshan conifer forests, Murray-Darling woodlands and mallee) contain high VOC emitting shrub species.
The World Wheat Market--Government Intervention and Multilateral Policy Reform
Creators: name: Harwood, Joy L.
name: Bailey, Kenneth W.
name: Harwood, Joy L.
name: Bailey, Kenneth W.
Publisher: name: Unknown
Year: 1990
Subjects: subject: Agricultural and Food Policy
subject: Crop Production/Industries
subject: International Relations/Trade
subject: Wheat
subject: trade
subject: policy reform
subject: trade liberalization
subject: GATT negotiations

description: Negotiators in the Uruguay Round of negotiations under the General Agreement on Tariffs and Trade (GATT) have proposed policy reforms that could phase out government supports to agriculture that distort production, consumption, and trade. If complete multilateral policy reform occurs for all commodities, world wheat prices could rise considerably and patterns of production, consumption, and stockholding would change. The total volume of world wheat trade is unlikely to change substantially, but the countries that are now major market players would fare differently. Trade policy reform would likely enhance the U.S. position in world wheat trade since the most efficient producers and marketers would be expected to fare the best.
ExoMars, doppio successo del test di caduta
Creators: Gloria Nobile
Publisher: name: Media Inaf
Year: 2021

Il più grande paracadute destinato a volare su Marte ha completato per la prima volta in modo pienamente soddisfacente il test di caduta ad alta quota, una pietra miliare fondamentale per garantire che la missione ExoMars sia sulla buona strada per il lancio nel 2022. A questo punto, sia il primo stadio (da 15 metri) che il secondo stadio (da 35 metri) hanno volato con successo
Caroll-Field-Jackiw electrodynamics in the pre-metric framework
Creators: name: Itin, Yakov
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We analyze the Carroll-Field-Jackiw (CFJ) modification of electrodynamics reformulated as the ordinary Maxwell theory with an additional special axion field. In this form, the CFJ model appears as a special case of the pre-metric approach recently developed by Hehl and Obukhov. This embedding turns out to be non-trivial. Particularly, the pre-metric energy-momentum tensor does not depend on the axion. This is in contrast to the CFJ energy-momentum tensor which involves the axion addition explicitly. We show that the relation between these two quantities is similar to the correspondence between the Noether conserved tensor and the Hilbert symmetric tensor. As a result the CFJ energy-momentum tensor appears as the unique conserved closure of the pre-metric one. Another problem is in the description of the birefringence effect, which in the pre-metric framework does not depend on the axion. The comparison with the CFJ model shows that the corresponding wave propagation (Fresnel) equation has to be extended by a derivative term, which is non zero for the axion field. In this way, the CFJ birefringence effect is derived in the metric-free approach. Consequently the Lorentz and CPT violating models can be embedded without contradictions in the pre-metric approach to electrodynamics. This correspondence can be useful for both constructions.
description: 6 pages, no figures, version accepted in PRD, style corrections
An analysis of student performance of the Virginia Algebra I Standards of Learning Examination
Creators: name: Wiersma, Laurell Lynda
Publisher: name: ProQuest
Year: 2023
Subjects: classificationCode: 39
subject: Education
classificationCode: 3901
subject: Curriculum and pedagogy
classificationCode: 3904
subject: Specialist studies in education

description: This study was designed to predict achievement on the Virginia Algebra 1 Standards of Learning Examination and to investigate additional variables that may influence achievement on the examination. Using data from a Northern Virginia school system administration of the May 2000 exam, a multiple regression model was developed to predict student performance on the state test using four dependent variables: Algebra 1 final grade, Math 8 final grade, Stanford 9 total mathematics score, and race. Gender, free and reduced lunch, English as a second language, and Stanford 9 reading comprehension were not statistically significant variables. In the second part of the study, outliers from the multiple regression were identified and the students were contacted for interviews. These students formed two categories. Category A includes the students that scored significantly higher than the regression model predicted. Category B includes students who scored significantly lower than the model predicted. The semi-stuctured interview investigated the students' experiences in Algebra 1 and on the Algebra 1 SOL examination. Seventeen students from category A and ten students from category B participated in the interviews. The interviews were analyzed to determine the similarities and differences between these two groups. The analysis of the interviews indicated that the students whose performance exceeded the predicted score were self-motivated, independent learners who had some test anxiety. The students who performed at a level lower than their predicted score were much more dependent on their teachers as motivators and disseminators of knowledge. Both groups of students valued the social aspects of school and preferred learning in active environments that used teacher-student discourse, group work, and other investigative methods of learning.
Additional file 1 of LCQS: an efficient lossless compression tool of quality scores with random access functionality
Creators: name: Jiabing Fu
name: Bixin Ke
name: Shoubin Dong
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Biotechnology
subject: Evolutionary Biology
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Developmental Biology
subject: Science Policy

description: Additional file 1 The procedure of quality score line partition: step 1.
Untwisted Gaiotto equivalence
Creators: name: Travkin, Roman
name: Yang, Ruotao
Publisher: name: arXiv
Year: 2022
Subjects: subject: Representation Theory (math.RT)
subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: This is a successive paper of arXiv:1909.11492. We prove an equivalence between the category of finite-dimensional representations of degenerate supergroup $\underline{GL}(M|N)$ and the category of $(GL_M(O) \ltimes U_{M, N}(F), χ_{M, N})$-equivariant D-modules on $Gr_{N}$. We also prove that we can realize the category of finite-dimensional representations of degenerate supergroup $\underline{GL}(M|N)$ as a category of D-modules on the mirabolic subgroup $Mir_L(F)$ with certain equivariant conditions for any $L$ bigger than $N$ and $M$.
description: 40 pages, published version, add acknowledgements and references
Exploring the effects of applying a more general radar equation to wind profiler data
Creators: name: Coleman, D.
name: Hartten, Leslie
name: Stevermer, Amy
name: Fellows, Jack
name: Martinez, Maribel
Publisher: name: University Corporation For Atmospheric Research (UCAR)
Year: 2002
Subjects: Galápagos Islands
Doppler wind profiler
Wind profiles
Reflectivity
Scattering volume
El Niño
La Niña

Data collected by the Galápagos Islands’ Doppler wind profiler using 100- and 500-m pulse lengths do not yield the same wind profiles. The longer 500-m pulse length profiles are displaced in height from those of the shorter 100-m pulse. The standard radar equation used to assign heights to measured winds assumes that the reflectivity in the atmospheric scattering volume is constant and the range of the scattering volume is much longer than the profiler pulse length. These assumptions are often violated, producing substantial differences in 500-m height assignments. This study adjusted 500-m pulse wind height assignments using a more general radar equation. The more general equation takes into account that the reflectivity in the scattering volume can be non-constant and the range of the scattering volume can be of similar length to the profiler pulse length. Height corrections were applied to El Niño, La Niña, and normal 10-day case studies. Applying the more general radar equation reduced the mean absolute difference between the wind speed and direction profiles for all cases at heights above 750 m. The results implied that height corrections could be applicable during different atmospheric conditions. The results of this research could allow profiles collected with different pulse lengths to be merged into one product, thereby improving data quality. Further research is needed to determine the statistical significance of the improvement and the equation’s applicability to other time periods in the Galapagos and other wind profiler date around the world.
Additional file 2 of LCQS: an efficient lossless compression tool of quality scores with random access functionality
Creators: name: Jiabing Fu
name: Bixin Ke
name: Shoubin Dong
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Biotechnology
subject: Evolutionary Biology
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Developmental Biology
subject: Science Policy

description: Additional file 2 Implementation details of adaptive k-mer packing method.