cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
IMPACTS OF POLICY REFORMS ON THE SUPPLY OF MEXICAN LABOR TO U.S. FARMS: NEW EVIDENCE FROM MEXICO
Creators: name: Taylor, J. Edward
name: Boucher, Stephen R.
name: Smith, Aaron D.
name: Yunez-Naude, Antonio
name: Taylor, J. Edward
name: Boucher, Stephen R.
name: Smith, Aaron D.
name: Yunez-Naude, Antonio
Publisher: name: Unknown
Year: 2004
Subjects: Labor and Human Capital

description: The availability of immigrant farmworkers from Mexico critically shapes fruit, vegetable, and horticultural (FVH) production in the United States. We test the impact of recent policy reforms on the supply of Mexican labor to U.S. farms, using a 2-way fixed effects model and new data from rural Mexico.
Possible violation of the spin-statistics relation for neutrinos: cosmological and astrophysical consequences
Creators: name: Dolgov, A. D.
name: Smirnov, A. Yu.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: We assume that the Pauli exclusion principle is violated for neutrinos, and consequently, neutrinos obey the Bose-Einstein statistics. Cosmological and astrophysical consequences of this assumption are considered. Neutrinos may form cosmological Bose condensate which accounts for all (or a part of) the dark matter in the universe. ``Wrong'' statistics of neutrinos could modify big bang nucleosynthesis, leading to the effective number of neutrino species smaller than three. Dynamics of the supernova collapse would be influenced and spectra of the supernova neutrinos may change. The presence of neutrino condensate would enhance contributions of the Z-bursts to the flux of the UHE cosmic rays and lead to substantial refraction effects for neutrinos from remote sources. The Pauli principle violation for neutrinos can be tested in the two-neutrino double beta decay.
description: 13 pages; a reference on BBN bound is added, more accurate result of the work in progress on BBN is presented; a minor typo in eq. (4) is corrected
Estimating the Nonmarket Value of Green Technologies Using Partial Data Enrichment Techniques
Creators: name: Gelso, Brett R.
name: Peterson, Jeffrey M.
name: Gelso, Brett R.
name: Peterson, Jeffrey M.
Publisher: name: Unknown
Year: 2004
Subjects: Environmental Economics and Policy

description: Recent studies have suggested that green technologies may be a cost effective way to manage urban runoff. Literature has also suggests that there needs to be a greater empirical basis to estimate the benefits associated with social values associated with urban trees; we therefore estimate ecosystem benefits of green technologies using emerging data enrichment valuation methods.
19. How many exoplanets?
Creators: name: Perryman, Michael
Publisher: name: Zenodo
Year: 2021

description: The discovery of the first planets beyond our own solar system was a major landmark in astronomy. The first discoveries, in 1995, were proof that planets indeed existed around other stars, and that they might even be rather common. Today more than 4000 are known. Gaia should discover several tens of thousands.
Photoionization modelling of quiescence phase spectra of novae & symbiotic star
Creators: name: Mondal, Anindita
name: Das, Ramkrishna
name: Anupama, G. C.
name: Mondal, Soumen
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present results of study, using observed and published spectra in optical region, of few novae (T CrB, GK Per, RS Oph, V3890 Sgr and V745 Sco) in their quiescence phase and a symbiotic star (BX Mon). Observations were made using the facilities available at 2m Himalayan Chandra Telescope (HCT). Generally, the spectra show prominent low ionization emission features of hydrogen, helium, iron and oxygen and TiO absorption features due to the cool secondary component; T CrB and GK Per show higher ionization lines. We used photoionization code CLOUDY to model these spectra. From the best-fit models, we have estimated the physical parameters, e.g., temperature, luminosity & hydrogen density; estimated elemental abundances and other parameters related to the system. By matching the spectra of various giants with the absorption features and from the best-fit, we determined the type of secondaries and also their contribution to the spectra.
Gemini/GMOS Spectra of Globular Clusters in the Virgo Giant Elliptical NGC 4649
Creators: name: Pierce, Michael
name: Bridges, Terry
name: Forbes, Duncan A.
name: Proctor, Robert
name: Beasley, Michael A.
name: Gebhardt, Karl
name: Faifer, Favio Raul
name: Forte, Juan Carlos
name: Zepf, Stephen E.
name: Sharples, Ray
name: Hanes, David A.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: NGC 4649 (M60) is one of a handful of giant Virgo ellipticals. We have obtained Gemini/GMOS spectra for 38 GCs associated with this galaxy. Applying the multi-index chi^2 minimisation technique of Proctor & Sansom (2002) with the single stellar population models of Thomas, Maraston & Korn (2004) we derive ages, metallicities and alpha-element abundance ratios. We find several young (2--3 Gyr old) super-solar metallicity GCs, while the majority are old (>10 Gyrs), spanning a range of metallicities from solar to [Z/H]=-2. At least two of these young GCs are at large projected radii of 17-20 kpc. The galaxy itself shows no obvious signs of a recent starburst, interaction or merger. A trend of decreasing alpha-element ratio with increasing metallicity is found.
description: 12 pages, 4 figs, 6 tables, MNRAS accepted
Application Studies of Purified Tyrosinase from Isolated Aeromonas sp. SNS with Detailed Characterization and Kinetic Studies
Creators: name: Gurme, Swati T.
name: Shripad N. Surwase
name: Chetan B. Aware
name: Vyavahare, Govind D.
name: Jadhav, Jyoti P.
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biophysics
subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer
subject: Inorganic Chemistry
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Tyrosinase is the key enzyme accountable for the bioconversion of L-tyrosine to L-DOPA and, further, in melanin. The extracellular tyrosinase from bacterium Aeromonas sp. SNS was purified by ionexchange chromatography using DEAE cellulose as a matrix. The enzyme was eluted with 0.2M NaCl, showing 20.93×10-3 U mg-1 specific activity with a 12.91 % yield and 17.01 purification fold. PAGE estimated the molecular weight of the purified enzyme at 120 and 150 KDa. The zymography of polyacrylamide gel with 5 mM L-DOPA as a substrate confirmed the protein was tyrosinase. Purified tyrosinase shows maximum activity at pH 7 and 40°C temperature. The screening of different inhibitors shows maximum (100 %) inhibition by 1 mM L-ascorbic acid, followed by kojic acid with 91.57 % inhibition. The Km and Vmax for L-DOPA were found to be 0.488 mM and 1.386×10-4 U mg-1, respectively, while for L-tyrosine, 0.470 mM Km and 2.428×10-4 U mg-1 Vmax were recorded. To retain activity for the maximum time, immobilization was performed using sodium alginate and CuCl2. The immobilized beads of tyrosinase were further used for the production of L-DOPA (2.2 mg L-1) in a packed bead reactor and the degradation of toxic dyes. The purification and application study of immobilized tyrosinase for L-DOPA production and dye degradation confirms its role in therapeutic and industrial applications.
The radiative lepton flavor violating decays in the split fermion scenario in the two Higgs doublet model
Creators: name: Iltan, E. O.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the branching ratios of the lepton flavor violating processes μ-> e γ, τ-> e γand τ-> μγin the split fermion scenario, in the framework of the two Higgs doublet model. We observe that the branching ratios are relatively more sensitive to the compactification scale and the Gaussian widths of the leptons in the extra dimensions, for two extra dimensions and especially for the τ-> μγdecay.
description: 19 pages, 7 Figures
Classification with Valid and Adaptive Coverage
Creators: name: Romano, Yaniv
name: Sesia, Matteo
name: Candès, Emmanuel J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Methodology (stat.ME)
subject: Machine Learning (stat.ML)
subject: FOS: Computer and information sciences

description: Conformal inference, cross-validation+, and the jackknife+ are hold-out methods that can be combined with virtually any machine learning algorithm to construct prediction sets with guaranteed marginal coverage. In this paper, we develop specialized versions of these techniques for categorical and unordered response labels that, in addition to providing marginal coverage, are also fully adaptive to complex data distributions, in the sense that they perform favorably in terms of approximate conditional coverage compared to alternative methods. The heart of our contribution is a novel conformity score, which we explicitly demonstrate to be powerful and intuitive for classification problems, but whose underlying principle is potentially far more general. Experiments on synthetic and real data demonstrate the practical value of our theoretical guarantees, as well as the statistical advantages of the proposed methods over the existing alternatives.
description: 10 pages, 3 figures; 13 supplementary pages, 4 supplementary figures, 4 supplementary tables
AN ANALYSIS ON POTENTIAL ECONOMIC IMPACTS OF GREENHOUSE GAS MITIGATION THROUGH PLANTING ENERGY CROPS IN TAIWAN
Creators: name: Chen, Chi-Chung
name: Hsu, Shih-Hsun
name: Chen, Chi-Chung
name: Hsu, Shih-Hsun
Publisher: name: Unknown
Year: 2004
Subjects: Resource /Energy Economics and Policy

description: The purpose of this study is to evaluate the economic and environmental impacts of planting energy crop on set-aside acreages in Taiwan. To do so, a Taiwan Agricultural Sector Model (TASM) was built and the data parameters of energy crop were incorporated into this model in order to simulate the economic and environmental impacts. Simulation results show that GHGE mitigation depends on the planting acreage of energy crops in which the optimal planting acreage of energy is determined by the profit of other agricultural products as well as government subsidy on energy crop. Therefore, the mitigation of GHGE depends on the government subsidy on energy crop per hectare. Such subsidy is also suitable for the green box by the regulation of WTO.
COMPOUND OPTIONS: A REAL OPTIONS APPLICATION TO AN AGRICULTURAL BUSINESS
Creators: name: Briggeman, Brian C.
name: Detre, Joshua D.
name: Gray, Allan W.
name: Briggeman, Brian C.
name: Detre, Joshua D.
name: Gray, Allan W.
Publisher: name: Unknown
Year: 2004
Subjects: Agribusiness

description: Real options analysis integrates uncertain outcomes of investment decisions. This framework is used to analyze a new product launch from an agricultural business to a market with multiple uncertainties. Findings indicate a more accurate valuation of the investment when real options and their interactions with the investment are considered.
AGRICULTURAL INPUT MARKET SEGMENTS: WHO IS BUYING?
Creators: name: Alexander, Corinne E.
name: Wilson, Christine A.
name: Foley, Daniel H.
name: Alexander, Corinne E.
name: Wilson, Christine A.
name: Foley, Daniel H.
Publisher: name: Unknown
Year: 2004
Subjects: Research Methods/ Statistical Methods

description: Cluster analysis was used to identify five distinct buyer segments for expendable input purchases for U.S. crop and livestock commercial producers. A multinomial logit model was used to predict segment membership based on demographic, behavioral, and business management factors. Results provide important information for agricultural input suppliers.
Sustainable community planning and design : a demostration project as pathway, the case of Egebjerggård, Ballerup, Denmark
Creators: name: Van Vliet, David R.
Publisher: name: University of British Columbia
Year: 2009

description: Much of the sustainable community planning and design discourse has been about prescribing and defining ends. A large gap exists between goals for sustainability and the ways and means to achieve them. Multiple barriers are encountered when implementation attempts are made. The research addresses the question: In what ways can demonstration projects increase social learning of effective planning, design and policy alternatives that assist in developing sustainable urban communities? Demonstration here is an area based, site specific planning and design process and built project showing potential adopters the benefits of employing various innovations. Five fields of scholarship and research (land-use and sustainable development; planning and design participation; urban experimentation and demonstration; innovation, diffusion and social learning; action for innovation and implementation) are drawn upon to inform the objectives. An analytical-evaluative framework for sustainable planning and design is developed, then applied in a detailed case study. The case study of Egebjerggard, a 928 dwelling, mixed use neighbourhood in Ballerup, Denmark provides an analysis of how leading practice can contribute to a better understanding of the potentials and challenges for advancing community policy, design and implementation at the neighbourhood and city-wide level. The analysis enables the interpretation of the Ballerup experience and the transfer of principles to the Canadian context. Two initiatives in sustainable community development in Calgary and Vancouver indicate the issues, opportunities and the state of practice. A proposed demonstration strategy outlines possible new institutional and organizational capacities and relationships in the Canadian residential planning and delivery system. The main contributions include: i) an empirical and descriptive-analytical case study providing a detailed account of integrated planning implementation and policy development in Denmark, ii) a strategy, its structure, organization and functions to carry out demonstration / exhibition in Canadian municipalities, iii) a normative proposition for and the evidence to support an expanded notion of demonstration directing attention to their value and potential. The benefits and returns outlined serve as a general argument for proceeding with a neighbourhood scale fully featured demonstration in any city in Canada.
A Tobit Analysis of WIC Children's Consumption of Pyramid Group Foods
Creators: name: Chandran, Ram
name: Chandran, Ram
Publisher: name: Unknown
Year: 2004
Subjects: Food Consumption/Nutrition/Food Safety

description: This paper develops and estimates an econometric model for children's consumption of the Pyramid Group foods using the Continuing Survey of Food Intake by Individuals (CSFII) for the years 1994-96, 1998. This analysis is accomplished using a Tobit model (censored dependent variable) and by appropriately incorporating the survey design characteristics. Results of the regression analysis indicate that participation in the WIC program significantly affects the consumption patterns of children, for certain types of Pyramid Group foods. After controlling for other factors, WIC children consumed more milk, fruit and whole grain and less of added sugar than the group of eligible nonparticipating children.
THE HORSE SECTOR: DOES IT MATTER FOR AGRICULTURE?
Creators: name: Johansson, Dag
name: Andersson, Hans
name: Johansson, Dag
name: Andersson, Hans
Publisher: name: Unknown
Year: 2004
Subjects: subject: Livestock Production/Industries
subject: Horse sector
subject: Input-Output

description: EU policies focus ever more on rural development initiatives. The horse sector provides some opportunities. An I/O model is used to examine the aggregate effects of the horse sector on Swedish agriculture. The maximal potential of the sector accounts for around 12% of the total contribution to GDP by agriculture.
Introduction to thermodynamics of spin models in the Hamiltonian limit
Creators: name: Berche, Bertrand
name: Lopez, Alexander
Publisher: name: arXiv
Year: 2005
Subjects: subject: Physics Education (physics.ed-ph)
subject: FOS: Physical sciences

description: A didactic description of the thermodynamic properties of classical spin systems is given in terms of their quantum counterpart in the Hamiltonian limit. Emphasis is on the construction of the relevant Hamiltonian, and the calculation of thermal averages is explicitly done in the case of small systems described, in Hamiltonian field theory, by small matrices.
20. The Hyades star cluster
Creators: name: Perryman, Michael
Publisher: name: Zenodo
Year: 2021

description: The Hyades star cluster is the nearest open cluster to the Sun, at around 45 pc. Extending over about 20 degrees, it has played a central role in establishing the cosmic distance scale. Gaia has more than doubled the number of previously known members, built up over more than a century.
Dagbok fra Inntrøndelag 1934, 1937, 1938, 1939
Creators: name: Vogt, Thorolf
Publisher: name: Unknown
Year: 1934

description: Private geologiske turer. Kartblad Levanger 1934-1937, Stjørdal 1937-1939, Stjørna 1937-1939, Rennebu 1938-1939, Selbu 1937-1939, Meråker 1939, Trondheim 1939, Melhus 1939.
description: Ms 191 I
A pure non-neutral plasma under an external harmonic field: equilibrium thermodynamics and chaos
Creators: name: Espinoza-Lozano, B. F. I.
name: Calderón, F. A.
name: Velazquez, L.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Motivated by the precedent study of Ordenes-Huanca and Velazquez [JSTAT \textbf{093303} (2016)], we address the study of a simple model of a pure non-neutral plasma: a system of identical non-relativistic charged particles confined under an external harmonic field with frequency $ω$. We perform the equilibrium thermo-statistical analysis in the framework of continuum approximation. This study reveals the existence of two asymptotic limits: the known Brillouin steady state at zero temperature, and the gas of harmonic oscillators in the limit of high temperatures. The non-extensive character of this model is evidenced by the associated thermodynamic limit, $N\rightarrow+\infty: U/N^{7/3}=const$, which coincides with the thermodynamic limit of a self-gravitating system of non-relativistic point particles in presence of Newtonian gravitation. Afterwards, the dynamics of this model is analyzed through numerical simulations. It is verified the agreement of thermo-statistical estimations and the temporal expectation values of the same macroscopic observables. The system chaoticity is addressed via numerical computation of Lyapunov exponents in the framework of the known \emph{tangent dynamics}. The temperature dependence of Lyapunov exponent $λ$ approaches to zero in the two asymptotic limits of this model, reaching its maximum during the transit between them. The chaos of the present model is very strong, since its rate is faster than the characteristic timescale of the microscopic dynamics $τ_{dyn}=1/ω$. A qualitative analysis suggests that such a strong chaoticity cannot be explained in terms of collision events because of their respective characteristic timescales are quite different, $τ_{ch}\propto τ_{dyn}/N^{1/4}$ and $τ_{coll}\propto τ_{dyn}$.
description: Version accepted in JSTAT
SPATIAL TESTS FOR EDGE-EFFECT EXTERNALITIES AND EXTERNAL SCALE ECONOMIES IN CALIFORNIA AGRICULTURE
Creators: name: Parker, Dawn Cassandra
name: Munroe, Darla K.
name: Parker, Dawn Cassandra
name: Munroe, Darla K.
Publisher: name: Unknown
Year: 2004
Subjects: Research Methods/ Statistical Methods

description: This paper test the hypothesis that conflicts along borders shared with conventional farms and potential external economies of scale have led to clustering of certified organic farms, using 1997 data from Yolo County, CA. Using a variety of landscape and areal statistics and a spatially autoregressive limited dependent variable model, we find significant evidence of spatial clustering related to both factors.
Isolation and Identification of Pinocembrin-7-O-[4”, 6"-(S)-Hexahydroxy Diphenoyl]-β-D-Glucose from Macrosolen capitellatus: In vitro and In silico Studies to Explore its Anticancer Potential
Creators: name: Srija Chilamula
name: Komal Pandey
name: Nilesh V. Malpure
name: Debanjan Chatterjee
name: Raut, Prashant S.
name: Puspanjali Sirigineedi
name: Khemraj Bairwa
name: Abhijeet S. Kate
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: Mistletoes are extremely important plants and their extracts have been widely used as a complementary medicine towards cancer therapy. In this context, we have studied the leaves of a South Indian Mistletoe, Macrosolen capitellatus (Wight & Arn.) Danser, a parasitic plant belonging to family Loranthaceae. A bioassay-guided isolation and LC-MS dereplication strategies have led to the isolation of pinocembrin-7-O-[4”, 6"-(S)-hexahydroxy diphenoyl (HHDP)]-β-D-glucose (1). This is the first report showing the presence of 1 not only in this plant but also in the genus Macrosolen. In this study, the aforementioned parasitic plant was collected from two different host plants, Mangifera indica and Phyllanthus emblica, which were extensively studied chemically by various research groups. We have observed that 1 is present in both samples of M. capitellatus, while a thorough literature search showed that this compound 1 has not been reported from either Mangifera indica or Phyllanthus emblica. These observations indicated that the producer of 1 is nothing but parasitic plant M. capitellatus. This compound has shown moderate anti-proliferative activity against MCF-7 cell line (IC50 value-15 μM). A computational protein binding study has been performed on 1 against 25 crystallographic proteins of the BRCA-1 gene of breast cancer. The results showed interactions having -9.33 and -8.99 kcal/mol binding energy with the proteins IDs 1T15 and 1T29 respectively; which suggests that this scaffold has the potential to develop further.
The CARMENES search for exoplanets around M dwarfs. Measuring precise radial velocities in the near infrared: the example of the super-Earth CD Cet b
Creators: name: Bauer, F. F.
name: Zechmeister, M.
name: Kaminski, A.
name: López, C. Rodríguez
name: Caballero, J. A.
name: Azzaro, M.
name: Stahl, O.
name: Kossakowski, D.
name: Quirrenbach, A.
name: Jarque, S. Becerril
name: Rodríguez, E.
name: Amado, P. J.
name: Seifert, W.
name: Reiners, A.
name: Schäfer, S.
name: Ribas, I.
name: Béjar, V. J. S.
name: Cortés-Contreras, M.
name: Dreizler, S.
name: Hatzes, A.
name: Henning, T.
name: Jeffers, S. V.
name: Kürster, M.
name: Lafarga, M.
name: Montes, D.
name: Morales, J. C.
name: Schmitt, J. H. M. M.
name: Schweitzer, A.
name: Solano, E.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The high-resolution, dual channel, visible and near-infrared spectrograph CARMENES offers exciting opportunities for stellar and exoplanetary research on M dwarfs. In this work we address the challenge of reaching the highest radial velocity precision possible with a complex, actively cooled, cryogenic instrument, such as the near-infrared channel. We describe the performance of the instrument and the work flow used to derive precise Doppler measurements from the spectra. The capability of both CARMENES channels to detect small exoplanets is demonstrated with the example of the nearby M5.0 V star CD Cet (GJ 1057), around which we announce a super-Earth ($4.0\pm0.4\,M_\oplus$) companion on a 2.29 d orbit.
Dynamical model of electroweak pion production in the resonance region
Creators: name: Sato, T.
name: Szczerbinska, B.
name: Kubodera, K.
name: Lee, T. -S. H.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In this report, we will briefly review the dynamical model of pion electroweak production reactions in the $Δ$ resonance region and report on our study of neutrino-nucleus reactions based on this model.
description: 6 pages, 7 figures:Invited talk at NuInt05 (Fourth International Workshop on Neutrino-Nucleus Interactions in the Few-GeV Region), Okayama, Japan. September 26 - 29, 2005
TRANSLATING AND SCALING OF BUDGET SHARES: AN EMPIRICAL ANALYSIS OF CHINESE URBAN HOUSEHOLD DEMAND FOR MEAT
Creators: name: Liu, Kang Ernest
name: Chern, Wen S.
name: Liu, Kang Ernest
name: Chern, Wen S.
Publisher: name: Unknown
Year: 2004
Subjects: Demand and Price Analysis

description: The importance of incorporating demographic effects into a demand system is demonstrated using Lewbel's unified functions. In this study, the empirical analysis of meat demand in urban China shows the benefit of utilizing the translation and scaling of budget shares.
Experimental Learning of Pure Quantum States using Sequential Single-Shot Measurement Outcomes
Creators: name: Lee, Sang Min
name: Park, Hee Su
name: Lee, Jinhyoung
name: Kim, Jaewan
name: Bang, Jeongho
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We experimentally implement a machine-learning method for accurately identifying unknown pure quantum states. The method, called single-shot measurement learning, achieves the theoretical optimal accuracy for $ε= O(N^{-1})$ in state learning and reproduction, where $ε$ and $N$ denote the infidelity and number of state copies, without employing computationally demanding tomographic methods. This merit results from the inclusion of weighted randomness in the learning rule governing the exploration of diverse learning routes. We experimentally verify the advantages of our scheme by using a linear-optics setup to prepare and measure single-photon polarization qubits. The experimental results show highly accurate state learning and reproduction exhibiting infidelity of $O(N^{-0.983})$ down to $10^{-5}$, without estimation of the experimental parameters.
description: 5 pages, 3 figures
THE ECONOMICS OF DECOUPLED PAYMENTS IN THE PRESENCE OF CHEATING
Creators: name: Giannakas, Konstantinos
name: Fulton, Murray E.
name: Giannakas, Konstantinos
name: Fulton, Murray E.
Publisher: name: Unknown
Year: 1998
Subjects: Institutional and Behavioral Economics

description: This paper introduces enforcement costs and farmer misrepresentation into the economic analysis of decoupled area payments. When enforcement is costly, complete deterrence of cheating is never optimal from an economic perspective. Misrepresentation changes the welfare effects of the policy instrument, its transfer efficiency, and the socially optimal income redistribution.
USING INPUT-OUTPUT (I-O) ANALYSIS IN EVALUATING CONSERVATION PROGRAMS AND PROJECTS: LESSONS LEARNED FROM EVALUATION OF THE CONSERVATION RESERVE PROGRAM (CRP)
Creators: name: Leistritz, F. Larry
name: Leistritz, F. Larry
Publisher: name: Unknown
Year: 1998
Subjects: Environmental Economics and Policy
Research Methods/ Statistical Methods
Resource /Energy Economics and Policy

description: This paper describes the use of input-output modeling in estimating the economic impacts of the conservation reserve program (CRP) in North Dakota, discusses challenges faced in conducting the analysis, and examines lessons learned from the study. The study had two major phases: (1) a statewide survey of CRP participants was conducted to determine selected characteristics of those individuals and their enrolled land that would be important for subsequent impact estimation and (2) a regional input-output model was used to estimate the indirect effects of the CRP program for each of the state's five pool groups. The results of this analysis indicated that the impacts of the Conservation Reserve Program on the North Dakota economy were relatively modest. Based on the 1.3 million acres removed from production through the fifth sign-up, total business activity was reduced by only 0.54 percent statewide and 0.91 percent for the most affected region. However, it should be noted that the impacts were not distributed uniformly among sectors or communities.
Transient coarsening and the motility of optically heated Janus colloids in a binary liquid mixture
Creators: name: Gomez-Solano, Juan Ruben
name: Roy, Sutapa
name: Araki, Takeaki
name: Dietrich, S.
name: Maciolek, Anna
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: A gold-capped Janus particle suspended in a near-critical binary liquid mixture can self-propel under illumination. We have immobilized such a particle in a narrow channel and studied the nonequilibrium dynamics of a binary solvent around it, using experiment and numerical simulations. For the latter we consider both a purely diffusive and a hydrodynamic model. All approaches indicate that the early time dynamics is purely diffusive and characterized by composition layers traveling with a constant speed from the surface of the colloid into the bulk. Subsequently, hydrodynamic effects set in and the transient state is destroyed by strong nonequilibrium concentration fluctuations, which arise as a result of the temperature gradient and the vicinity of the critical point of the binary liquid mixture. They give rise to a complex, permanently changing coarsening patterns. For a mobile particle, the transient dynamics results in propulsion in the direction opposite to that observed after the steady state is attained.
description: 39 pages, 20 figures
Comparison of the color-evaporation model and the NRQCD factorization approach in charmonium production
Creators: name: Bodwin, Geoffrey T.
name: Braaten, Eric
name: Lee, Jungil
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We compare the color-evaporation model (CEM) and nonrelativistic QCD (NRQCD) factorization predictions for inclusive quarkonium production. Using the NRQCD factorization formulas for quarkonium production and for perturbative QQ-bar production, we deduce relationships that are implied by the CEM between the nonperturbative NRQCD matrix elements that appear in the factorization formula for quarkonium production. These relationships are at odds with the phenomenological values of the matrix elements that have been extracted from the Tevatron data for charmonium production at large transverse momentum. A direct comparison of the CEM and NRQCD factorization predictions with the CDF charmonium production data reveals that the CEM fits to the data are generally unsatisfactory, while the NRQCD factorization fits are generally compatible with the data. The inclusion of k_T smearing improves the CEM fits substantially, but significant incompatibilities remain. The NRQCD factorization fits to the chi_c data indicate that multiple gluon radiation is an essential ingredient in obtaining the correct shape of the cross section as a function of p_T.
description: 26 pages, 6 figures, 7 tables, Some changes of emphasis in the conclusions, additional discussion of theoretical uncertainties, minor revisions and corrections, version to be published in Physical Review D
DYNAMIC COMPLEMENTARITY IN EXPORT PROMOTION: THE MARKET ACCESS PROGRAM IN FRUITS AND VEGETABLES
Creators: name: Richards, Timothy J.
name: Patterson, Paul M.
name: Richards, Timothy J.
name: Patterson, Paul M.
Publisher: name: Unknown
Year: 1998
Subjects: International Relations/Trade

description: To justify public subsidies for export promotion, export markets must fail to provide incentives for exporters to recognize the benefits of spillover or long-term benefits of promotion. This paper tests for these failures in dynamic dual model for horticultural export supply. Results show significant spillovers and dynamic effects.
"GREEN BOX" MEASURES FOR AGRICULTURAL SUPPORT: HOW DECOUPLED CAN THEY REALLY BE? AN INVESTIGATION WITHIN SAM AND CGE FRAMEWORKS
Creators: name: Sayan, Serdar
name: Tin, Ela
name: Sayan, Serdar
name: Tin, Ela
Publisher: name: Unknown
Year: 1998
Subjects: International Relations/Trade

description: The Uruguay Round Agreement on Agriculture classified some subsidies as "Green Box" measures and presuming that they would not distort production/trade patterns, kept them outside the AMS reduction commitments. This study investigates the validity of this view through simulation results from SAM multiplier and CGE analyses for the US economy.
The Smallest AGN Host Galaxies
Creators: name: Greene, J. E.
name: Barth, A. J.
name: Ho, L. C.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We describe our efforts to study dwarf galaxies with active nuclei, whose black holes, with masses < 10^6 M_sun, provide the best current observational constraints on the mass distribution of primordial seed black holes. Although these low-mass galaxies do not necessarily contain classical bulges, Barth, Greene, & Ho (2005) show that their stellar velocity dispersions and black hole masses obey the same relation as more massive systems. In order to characterize the properties of the dwarf hosts without the glare of the active nucleus, we have compiled a complementary sample of narrow-line active galaxies with low-mass hosts. The host galaxy properties, both their structures and stellar populations, are consistent with the general properties of low-mass, blue galaxies from Sloan. The black holes in these galaxies are probably radiating close to their Eddington limits, suggesting we may have found Type 2 analogues of narrow-line Seyfert 1 galaxies.
description: 6 pages, 5 figures, uses elsart.cls, from "QSO Hosts: Evolution and Environment", P. D. Barthel, D. B. Sanders, eds., August 2005, Leiden University, New Astr
Toward a Physics Based Model of Hypervelocity Dust Impacts
Creators: name: Kellogg, Paul J
name: Bale, S. D.
name: Goetz, Keith
name: Monson, Steven J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: There has been important understanding of the process by which a hypersonic dust impact makes an electrical signal on a spacecraft sensor, leading to a fuller understanding of the physics. Zaslavsky (2015) showed that the most important signal comes from the charging of the spacecraft, less from charging of an antenna. The present work is an extension of the work of Zaslavsky. An analytical treatment of the physics of a hypersonic dust impact and the mechanism for generating an electrical signal in a sensor, an antenna, is presented. The treatment is compared with observations from STEREO and Parker Solar Probe. A full treatment of this process by simulations seems beyond present computer capabilities, but some parts of the treatment can must depend on simulations but other features can be better understood through analytical treatment. Evidence for a somewhat larger contribution from the antenna part of the signal than in previous publications is presented. Importance of electrostatic forces in forming the exiting plasma cloud is emphasized. Electrostatic forces lead to a rapid expansion of the escaping cloud, so that it expands more rapidly than escapes, and frequently surrounds one or more antennas. This accounts for the ability of dipole antennas to detect dust impacts. Some progress toward an understanding occasional negative charging of an antenna is presented, together with direct evidence of such charging. Use of laboratory measurements of charge to estimate size of spacecraft impacts are shown to be not reliable without further calibration work.
A MODEL OF IMPERFECT COMPETITION USING MARGINAL INPUT AND OUTPUT PRICES: APPLICATION TO THE BEEF PACKING INDUSTRY
Creators: name: Muth, Mary K.
name: Wohlgenant, Michael K.
name: Muth, Mary K.
name: Wohlgenant, Michael K.
Publisher: name: Unknown
Year: 1998
Subjects: Agribusiness
Demand and Price Analysis

description: Based on Diewert's idea that models under competition can be generalized to imperfect competition using marginal prices, we develop a test for imperfect competition in the beef packing industry. Our model is more general and flexible than those depending on empricial estimates of the input supply and output demand elasticities.
16. Quasars, as seen by Gaia
Creators: name: Perryman, Michael
Publisher: name: Zenodo
Year: 2021

description: More than 500,000 quasars are being observed by Gaia. In addition to their role in defining a highly accurate inertial reference system, many quasars are also of individual interest. They are being used as probes of cosmological evolution and structure formation, and several hundred show multiple images as a result of gravitational lensing.
Quantum moment map and obstructions to the existence of closed Fedosov star products
Creators: name: Futaki, Akito
name: La Fuente-Gravy, Laurent
Publisher: name: arXiv
Year: 2020
Subjects: subject: Symplectic Geometry (math.SG)
subject: Differential Geometry (math.DG)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: 53D55 (Primary), 53D20, 32Q15, 53D05 (Secondary)

description: It is shown that the normalized trace of Fedosov star product for quantum moment map depends only on the path component in the cohomology class of the symplectic form and the cohomology class of the closed formal 2-form required to define Fedosov connections (Theorem 1.3). As an application we obtain a family of obstructions to the existence of closed Fedosov star products naturally attached to symplectic manifolds (Theorem 1.5) and Kähler manifolds (Theorem 1.6). These obstructions are integral invariants depending only on the path component of the cohomology class of the symplectic form. Restricted to compact Kähler manifolds we re-discover an obstruction found earlier in [29].
description: 19 pages
Near room temperature X-ray and Gamma ray spectroscopic detectors for future space experiments
Creators: name: Yadav, J. S.
name: Savitri, S.
name: Malkar, J. P.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: New generation Cadmium Telluride (CZT & CdTe) solid state detectors can provide high quantum efficiency with reasonably good energy resolution and can operate at near room temperature; an unique advantage for space experiments. We present here results of our study of small diode detectors as well as large area pixel detectors. Our study is aimed at developing near room temperature hard X-ray spectroscopy detectors for ASTROSAT and other future Indian space science missions.We have studied a Si-PIN detector in the energy range 5 - 60 keV and CZT & CdTe Schottky diode detectors in the energy region 10 - 1330 keV. We have studied large area (64 cm$^2$) CZT pixel detectors with pixel size close to the small CZT detector. We have studied individual pixels as well as CZT detector as a whole (summed over all the 1024 pixels). The energy resolution behaviour of the large area CZT detector is similar to that of small diode detectors in the low energy region. The change in operating temperature from room temperature ~20 to ~70$ degree C drastically affects both the energy resolutionas well as the peak area due to a sharp rise in the thermal noise.These results suggest that the cooling of detector system will provide better energy resolution as well as detection efficiency.
description: 12 Figures
RURAL HOUSEHOLD FRUIT AND VEGETABLE CONSUMPTION IN CHINA
Creators: name: Han, Tong
name: Wahl, Thomas I.
name: Mittelhammer, Ronald C.
name: Han, Tong
name: Wahl, Thomas I.
name: Mittelhammer, Ronald C.
Publisher: name: Unknown
Year: 1998
Subjects: Consumer/Household Economics

description: A two-stage budgeting model using Chinese rural survey data is used to assess rural Chinese household food demand. The second-step includes 11 categories including 4 vegetable groups and 3 fruit groups. The results indicate that grains are still important staple foods and that vegetables are important non-staple foods relative to fruits.
Molecular characterization of rubella virus nonstructural proteins and viral RNA synthesis
Creators: name: Liang, Yuying
Publisher: name: University of British Columbia
Year: 2009

description: Rubella virus (RV) is a single-strand positive RNA virus. Its 9762-nucleotide (nt) genomic RNA contains two large open readings frames (ORFs) at the 5'- and 3'-termini, encoding nonstructural and structural proteins, respectively. The nonstructural proteins (NSPs) are first translated as a 200-kDa polyprotein (p200), which undergoes a single proteolytic cleavage into pl50 and p90 by an intrinsic protease, the RV nonstructural protease (NS-pro). The purpose of this thesis work is to characterize RV NSPs and viral RNA synthesis at the molecular level, including the characterization of the RV NS-pro domains, the roles of NSPs in viral RNA synthesis, and the regulatory mechanism for viral RNA synthesis. RV NS-pro is an M-group papain-like cysteine protease (PCP) with both trans- and cis-cleavage activities. Employing an in vitro translation system, I mapped the regions of NS-pro required for trans- and cis- activities, and demonstrated the importance of an X domain in rrarcs-cleavage activity. RV NS-pro catalytic region was also predicted to have a papain-like folding from primary and secondary structure analyses. The time course of RV RNA synthesis was precisely determined. Synthesis of negative-strand RNA stops after 10 h postinfection (hpi), and subsequently switches to highly efficient synthesis of positive-strand RNAs (genomic and subgenomic RNA). The roles of respective NSPs and the underlying regulatory mechanism for RV RNA synthesis were investigated by mutational analysis and complementation experiments. Processing of p200 was found to be crucial for virus replication. Uncleaved p200 was shown to be functional in negative-strand RNA synthesis but not for positive-strand RNA. In contrast, the complex formed by the cleavage products p150/p90 is not an active replicase for negative-strand RNA, but is required for the efficient generation of positive-strand RNAs. Syntheses of both negative- and positive-strand RV RNAs were found to be cis-preferential from complementation experiments. A mechanism for RV NSP translation, processing and RV RNA replication was proposed. Newly translated p200 functions in cis to synthesize a full-length negative-strand RNA. The subsequent processing of p200 into p150/p90 converts this replicase into one with positive-strand RNA specificity, which functions in cis to produce genomic and subgenomic RNA efficiently.
Some results on discrete eigenvalues for the Stochastic Nonlinear Schroedinger Equation in fiber optics
Creators: name: Prati, Laura
name: Barletti, Luigi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We study a stochastic Nonlinear Schroedinger Equation (NLSE), with additive white Gaussian noise, by means of the Nonlinear Fourier Transform (NFT). In particular, we focus on the propagation of discrete eigenvalues along a focusing fiber. Since the stochastic NLSE is not exactly integrable by means of the NFT, then we use a perturbation approach, where we assume that the signal-to-noise ratio is high. The zeroth-order perturbation leads to the deterministic NLSE while the first-order perturbation allows to describe the statistics of the discrete eigenvalues. This is important to understand the properties of the channel for recently devised optical transmission techniques, where the information is encoded in the nonlinear Fourier spectrum.
ESTIMATING THE COST OF LEISURE TIME FOR RECREATION DEMAND MODELS
Creators: name: Feather, Peter
name: Shaw, W. Douglass
name: Feather, Peter
name: Shaw, W. Douglass
Publisher: name: Unknown
Year: 1998
Subjects: Research Methods/ Statistical Methods
Resource /Energy Economics and Policy

description: The cost of travel time has commonly been incorporated in recreation demand models as some fucntion of the wage rate. This paper proposes a new methodology of determining the value of leisure time. The proposed method is compared to other alternatives and shown to yield more appropriate welfare measures.
Occurrence Frequency of CO Outflows in Massive Protostellar Candidates
Creators: name: Kim, Kee-Tae
name: Kurtz, S. E.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We mapped 12 massive protostellar candidates in the CO J=2-1 line, which in combination with Zhang et al. (2005) completes an unbiased survey of outflows for all 48 sources with l>50^o in a sample of 101 massive protostellar candidates. We detected outflows in 10 sources, implying 88% occurrence frequency of outflows for the 48 sources. This supports the conclusion of previous studies that bipolar outflows are an integral component in the formation process of massive stars. The vast majority of the observed outflows are much more massive (>10~Mo) and energetic (>100~Mo~km/s) than outflows from low-mass protostars. They also have large mass outflow rates (>2x10^{-4}~Mo/yr), suggesting large (~1x10^{-4}~Mo/yr) accretion rates sufficient to overcome radiation pressure of the central massive protostars. We compared the frequency distribution of collimation factors of 40 massive outflows including those of this study with that of 36 low-mass outflows from the literature, and found NO significant difference between the two. All these results are consistent with the suggestion that massive stars form through accretion as do low-mass stars but with much higher accretion rates.
description: 15 pages, 3 figures, Accepted by ApJ
DISCUSSANT'S COMMENTS FOR AMERICAN AGRICULTURAL ECONOMICS ASSOCIATION ANNUAL MEETING, SELECTED PAPERS SESSION SP-6R: "ADOPTION OF TECHNOLOGY IN DEVELOPING COUNTRIES"
Creators: name: Renkow, Mitch
name: Renkow, Mitch
Publisher: name: Unknown
Year: 1998
Subjects: International Development
Research and Development/Tech Change/Emerging Technologies

description: These papers move beyond the questions of who adopts technologies to ask how preferences for characteristics (of maize in Mexico or cattle in Burkina Faso) affect adoption and how technical change differentially affects semi-subsistence farmers and how it affects productivity and yield variability. Papers include: Modeling Impacts of Soil Conservation on Productivity and Yield Variability: Evidence From a Heteroskedastic Switching Regression Gerald Shively, Purdue University. Selecting Genetic Traits for Cattle Improvement: Preservation of Disease Resistant Cattle in Africa Kouadio Tano, Merle Faminow, Mulumba Kamuanga, Brent Swallow. Variety Characteristics and the Land Allocation Decisions of Farmers in a Center of Maize Diversity Melinda Smale, Mauricio Bellon, and Alfonso Aguirre. The Distributional Impacts of Farm Policy in Semi-Subsistence Agriculture Garth Holloway, Ahmet Bayaner, Nermin Akyil.