cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Stimulated emission from the biexciton in a single quantum dot
Creators: name: Akimov, I. A.
name: Andrews, J. T.
name: Henneberger, F.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Using two optical pulses of different frequencies, we demonstrate entanglement and disentanglement of the electronic states in Stranski-Krastanov quantum dots. Resonant two-photon excitation of the biexciton creates an entangled Bell-like state. The second pulse, being resonant to the exciton-biexciton transition, stimulates the emission from the biexciton and fully disentangles the two-bit system. By setting the polarization of the stimulation pulse, we control the recombination path of the biexciton and, by this, the state of the photons emitted in the decay cascade.
description: 4 pages, 4 figures
The Ising-Sherrington-Kirpatrick model in a magnetic field at high temperature
Creators: name: Comets, Francis
name: Guerra, Francesco
name: Toninelli, Fabio Lucio
Publisher: name: arXiv
Year: 2005
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 82B44; 60K35, 82D30

description: We study a spin system on a large box with both Ising interaction and Sherrington-Kirpatrick couplings, in the presence of an external field. Our results are: (i) existence of the pressure in the limit of an infinite box. When both Ising and Sherrington-Kirpatrick temperatures are high enough, we prove that: (ii) the value of the pressure is given by a suitable replica symmetric solution, and (iii) the fluctuations of the pressure are of order of the inverse of the square of the volume with a normal distribution in the limit. In this regime, the pressure can be expressed in terms of random field Ising models.
Magnetic anisotropy switching in (Ga,Mn)As with increasing hole concentration
Creators: name: Hamaya, K.
name: Watanabe, T.
name: Taniyama, T.
name: Oiwa, A.
name: Kitamoto, Y.
name: Yamazaki, Y.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study a possible mechanism of the switching of the magnetic easy axis as a function of hole concentration in (Ga,Mn)As epilayers. In-plane uniaxial magnetic anisotropy along [110] is found to exceed intrinsic cubic magnetocrystalline anisotropy above a hole concentration of p = 1.5 * 10^21 cm^-3 at 4 K. This anisotropy switching can also be realized by post-growth annealing, and the temperature-dependent ac susceptibility is significantly changed with increasing annealing time. On the basis of our recent scenario [Phys. Rev. Lett. 94, 147203 (2005); Phys. Rev. B 73, 155204 (2006).], we deduce that the growth of highly hole-concentrated cluster regions with [110] uniaxial anisotropy is likely the predominant cause of the enhancement in [110] uniaxial anisotropy at the high hole concentration regime. We can clearly rule out anisotropic lattice strain as a possible origin of the switching of the magnetic anisotropy.
description: 5 pages, 4 figures, to appear in Phys. Rev. B
A Low Frequency Blind Survey of the Low Earth Orbit Environment using Non-Coherent Passive Radar with the Murchison Widefield Array
Creators: name: Prabu, Steve
name: Hancock, Paul J
name: Xiang, Zhang
name: Tingay, Steven J
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We have extended our previous work to use the Murchison Widefield Array (MWA) as a non-coherent passive radar system in the FM frequency band, using terrestrial FM transmitters to illuminate objects in Low Earth Orbit LEO) and the MWA as the sensitive receiving element for the radar return. We have implemented a blind detection algorithm that searches for these reflected signals in difference images constructed using standard interferometric imaging techniques. From 20 hours of archived MWA observations, we conduct a survey of LEO, detecting 74 unique objects over multiple passes and demonstrating the MWA to be a valuable addition to the global Space Domain Awareness network. We detected objects with ranges up to 977 km and as small as 0.03 m^2 radar cross section. We found that 30 objects were either non-operational satellites or upper-stage rocket body debris. Additionally, we also detected FM reflections from Geminid meteors and aircraft flying over the MWA. Most of the detections of objects in LEO were found to lie within the parameter space predicted by previous feasibility studies, verifying the performance of the MWA for this application.
description: Submitted to PASA
Global Energetics of Solar Flares. XI. Flare Magnitude Predictions of the GOES-Class
Creators: name: Aschwanden, Markus J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: In this study we determine scaling relationships of observed solar flares that can be used to predict upper limits of the GOES-class magnitude of solar flares. The flare prediction scheme is based on the scaling of the slowly-varying potential energy $E_p(t)$, which is extrapolated in time over an interval of $Δt \le$ 24 hrs. The observed scaling of the dissipated energy $E_{diss}$ scales with the potential field energy as $E_{diss} \propto E_p^{1.32}$. In addition, the observed scaling relationship of the flare volume, $V \propto E_{diss}^{1.17}$, the multi-thermal energy, $E_{th} \propto V^{0.76}$, the flare emission measure $EM \propto E_{th}^{0.79}$, the EM-weighted temperature $T_{w}$, and the GOES flux, $F_8(t) \propto E_p(t)^{0.92}$, allows us then to predict an upper limit of the GOES-class flare magnitude in the extrapolated time window. We find a good correlation (CCC$\approx 0.7$) between the observed and predicted GOES-class flare magnitudes (in 172 X and M-class events). This is the first algorithm that employs observed scaling laws of physical flare parameters to predict GOES flux upper limits, an important capability that complements previous flare prediction methods based on machine-learning algorithms used in space weather forecasting.
description: 4 Figures
Regionalism in World Agricultural Trade: Lessons from Gravity Model Estimation
Creators: name: Grant, Jason H.
name: Lambert, Dayton M.
name: Grant, Jason H.
name: Lambert, Dayton M.
Publisher: name: Unknown
Year: 2005
Subjects: International Relations/Trade

description: Relative to trade in non-agricultural goods, progress in achieving agricultural trade liberalization under the GATT/WTO has been slow. Agricultural trade is characterized by persistently high levels of protection on a scale that is uncommon in non-agricultural trade. Article XXIV of the GATT, 1994 permits a group of countries to form a trade union whereby trade barriers are reduced or removed on all sectors of trade. Within regional trade agreements however, agricultural trade often receives special treatment, and in some cases, agriculture is completely exempt. Typically, debates over the effects of regional trade agreements have focused on welfare. In this study we seek to answer a more fundamental question of what effect these agreements have had on agricultural trade.
Cosmicflows-3: The South Pole Wall
Creators: name: Pomarede, Daniel
name: Tully, R. Brent
name: Graziani, Romain
name: Courtois, Helene M.
name: Hoffman, Y.
name: Lezmy, Jeremy
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Velocity and density field reconstructions of the volume of the universe within 0.05c derived from the Cosmicflows-3 catalog of galaxy distances has revealed the presence of a filamentary structure extending across ~ 0.11c. The structure, at a characteristic redshift of 12,000 km/s, has a density peak coincident with the celestial South Pole. This structure, the largest contiguous feature in the local volume and comparable to the Sloan Great Wall at half the distance, is given the name the South Pole Wall.
description: Accepted for publication by The Astrophysical Journal. Links to a video and 4 interactive Sketchfab visualizations. High quality figures, video, and interactive visualizations are available at http://irfu.cea.fr/southpolewall
Embryo Transfer and In-Vitro Fertilization in Bovine
Creators: name: *Ranjeet Singh V. Dodiya, Panchabhai H. Chaudhary, Manoj S. Trivedi, Amrut M. Chaudhary and Dhaval B. Rajgor
Publisher: name: The Science world a Monthly e magazine
Year: 2024

description: Embryo transfer (ET)

Embryo transfer is a bio-technique where embryos are collected from the donor females and transferred in to the uterus of recipients which serves as a foster mother for its development throughout the remainder period of pregnancy.

It can be performed every 6-8 week per donor. On average 6.9 viable embryos are recovered per flush in females this number fluctuates depending on cow breed, age, and within breed variation (AETA, 2018).
L^p regularity of averages over curves and bounds for associated maximal operators
Creators: name: Pramanik, Malabika
name: Seeger, Andreas
Publisher: name: arXiv
Year: 2005
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We prove that for a finite type curve in $\mathbb R^3$ the maximal operator generated by dilations is bounded on $L^p$ for sufficiently large $p$. We also show the endpoint $L^p \to L^{p}_{1/p}$ regularity result for the averaging operators for large $p$. The proofs make use of a deep result of Thomas Wolff about decompositions of cone multipliers.
DOES THE MARKET ANTICIPATE SMOOTHING IN USDA CROP PRODUCTION FORECASTS?
Creators: name: Isengildina, Olga
name: Irwin, Scott H.
name: Good, Darrel L.
name: Isengildina, Olga
name: Irwin, Scott H.
name: Good, Darrel L.
Publisher: name: Unknown
Year: 2004
Subjects: subject: Marketing
subject: FOS: Economics and business

description: This study examines whether market participants anticipate the predictable component in USDA revisions of corn and soybean production forecasts during 1970/71 through 2003/04 marketing years. The analysis revealed that markets consistently under-predicted October corn production revisions and over-predicted September soybean production revisions. These biases may be attributable to inefficient use of information about smoothing in USDA revisions. In all other cases market analysts seemed to be aware of USDA smoothing practices and generally efficiently incorporated this information into their own forecasts.
Identifying Motivations for Acceptance of Cisgenic Food: Results from a Randomized Controlled Choice Experiment
Creators: name: De Marchi, Elisa
name: Cavaliere, Alessia
name: Banterle, Alessandro
name: De Marchi, Elisa
name: Cavaliere, Alessia
name: Banterle, Alessandro
Publisher: name: Unknown
Year: 2020
Subjects: subject: Food Consumption/Nutrition/Food Safety
subject: Cisgenic food
subject: Choice Experiment
subject: Edited food
subject: Food information
subject: Food choices
subject: Information treatment

description: European consumers have generally been reluctant to accept genetically modified food. Novel breeding technologies that avoid transgenic manipulations seem to be more positively perceived by consumers, opening new horizons on the market. This paper investigates the motivations of consumer acceptance for cisgenic products. By comparing four information treatments (i.e., basic information treatments, naturalness treatment, health, and environment treatments) we demonstrate that information on health-related benefits and, especially, on environmental benefits contribute to generate a positive communication landscape around cisgenic food. The results provide insights for the development of food policies and communication strategies aimed at increasing consumer acceptance for edited food.
Spin-dependent structure functions in nuclear matter and the polarized EMC effect
Creators: name: Cloet, I. C.
name: Bentz, W.
name: Thomas, A. W.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: An excellent description of both spin-independent and spin-dependent quark distributions and structure functions has been obtained with a modified Nambu-Jona-Lasinio model, which is free of unphysical thresholds for nucleon decay into quarks - hence incorporating an important aspect of confinement. We utilize this model to investigate nuclear medium modifications to structure functions and find that we are readily able to reproduce both nuclear matter saturation and the experimental F^A_2N / F_2N ratio, that is, the EMC effect. Applying this framework to determine g^A_1p, we find that the ratio g^A_1p / g_1p differs significantly from 1, with the quenching caused by the nuclear medium being about twice that of the spin-independent case. This represents an exciting result, which if confirmed experimentally, will reveal much about the quark structure of nuclear matter.
description: 4 pages, 4 figures
Video Killed the Writing Assignment
Creators: name: Zellner, Nicolle
Publisher: name: arXiv
Year: 2020
Subjects: subject: Physics Education (physics.ed-ph)
subject: FOS: Physical sciences

description: An introductory Astronomy survey course is often taken to satisfy a college graduation requirement for non-science majors at colleges around the United States. In this course, material that can be broadly categorized into topics related to "the sky", "the Solar System", "the Galaxy", and "cosmology" is discussed. Even with the wide variety of topics in these categories, though, students may not be 100% interested in the course content, and it is almost certain that a specific topic about which a student wishes to learn is not covered. To at least partly address these issues, to appeal to all of the students in this class, and to allow students to explore topics of their choice, a video project has been assigned to students at Albion College as a class activity. In this assignment, students are asked to create a video of a famous (or not) astronomer, astronomical object or discovery, or telescope observatory to present to the class. Students work in pairs to create a video that is original and imaginative and includes accurate scientific content. For this project, then, students use a familiar technology and exercise their creativity while learning a little (or a lot of) science along the way. Herein data on types and topics of videos, examples of videos, assignment requirements and grading rubrics, lessons learned, and student comments will be discussed and shared.
description: 18 pages, activity instructions & evaluation criteria included
A MODEL OF PRODUCER INCENTIVES FOR LIVESTOCK DISEASE MANAGEMENT
Creators: name: Ranjan, Ram
name: Lubowski, Ruben N.
name: Ranjan, Ram
name: Lubowski, Ruben N.
Publisher: name: Unknown
Year: 2004
Subjects: Agricultural and Food Policy

description: We examine the management of livestock diseases from the producers' perspective, incorporating information and incentive asymmetries between producers and regulators. Using a dynamic model, we examine responses to different policy options including indemnity payments, subsidies to report at-risk animals, monitoring, and regulatory approaches to decreasing infection risks when perverse incentives and multiple policies interact. This conceptual analysis illustrates the importance of designing efficient combinations of regulatory and incentive-based policies.
description: Replaced with revised version of paper 07/13/04.
Flipping the Classroom in Mindanao: Empowering Rural Students through Technology
Creators: name: Daling, Rudy
Publisher: name: Pinagpala Publishing Services
Year: 2024

description: Nestled amidst the verdant mountains and shimmering coasts of Mindanao, the Philippines' second-largest island, lies a vibrant tapestry of diverse cultures and resilient communities. Yet, education in this resource-rich region faces unique challenges, particularly in rural areas grappling with limited access to quality resources and traditional pedagogical approaches. Fortunately, a promising educational trend - flipping the classroom - emerges as a potential game-changer, empowering rural students through technology and personalized learning.
Planning a Wholesale Frozen Food Distribution Plant
Creators: name: Mixon, James A.
name: Larson, J. Stanford
name: Mixon, James A.
name: Larson, J. Stanford
Publisher: name: Unknown
Year: 1952
Subjects: subject: Industrial Organization
subject: Marketing
subject: FOS: Economics and business
subject: Research Methods/ Statistical Methods

description: Excerpt from the report Summary: Frozen-food wholesalers usually have three choices in obtaining facilities: (1) Lease space in a public refrigerated warehouse; (2) construct a plant designed to fit the wholesaler's individual requirements; or (3) get together with other frozen food wholesalers in a specially designed warehouse. Regardless of the choice made, the wholesale distribution plant should contain the following components: (1) Storage space; (2) order-assembly room, which may also provide some storage space; (3) order-holding space, which may be in the order-assembly or storage rooms; (4) covered platforms; (5) office space; and (6) toilet and washroom facilities. Other plant components may include: (1) Compressor room; (2) direct rail connections; (3) parking area and accommodations for refrigerating delivery trucks; (4) utility storage room; and (5) inspection and testing laboratory.
Truncated Sum Rules and their use in Calculating Fundamental Limits of Nonlinear Susceptibilities
Creators: name: Kuzyk, Mark G.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Truncated sum rules have been used to calculate the fundamental limits of the nonlinear susceptibilities; and, the results have been consistent with all measured molecules. However, given that finite-state models result in inconsistencies in the sum rules, it is not clear why the method works. In this paper, the assumptions inherent in the truncation process are discussed and arguments based on physical grounds are presented in support of using truncated sum rules in calculating fundamental limits. The clipped harmonic oscillator is used as an illustration of how the validity of truncation can be tested; and, several limiting cases are discussed as examples of the nuances inherent in the method.
description: 6 pages, 4 figures
MassINC: 2019 Rail and Transportation Massachusetts Survey
Creators: name: MassINC
name: Foundation, The Barr
Publisher: name: Roper Center for Public Opinion Research
Year: 2021

description: Easier or harder to get around your part of state in five years (2); priorities for state transportation system (6); Massachusetts Bay Transit Authority commuter rail (5); improving MBTA commuter rail (13); changing how riders pay for commuter rail (4); price of commuter rail (1); regional rail network (15); let cities and regions vote to raise their own taxes for improving rail service (1); "Gateway Cities" (midsize Massachusetts cities that were formerly home to prosperous industries) (9); one way commute time (1); own or rent (1); number of cars owned (1); registered to vote (1).
A Survey for C II Emission-Line Stars in the Large Magellanic Cloud
Creators: name: Margon, Bruce
name: Massey, Philip
name: Neugent, Kathryn F.
name: Morrell, Nidia
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a narrow-band imaging survey of the Large Magellanic Cloud, designed to isolate the C II $λλ$7231, 7236 emission lines in objects as faint as $m_{\lambda7400}\sim18$. The work is motivated by the recent serendipitous discovery in the LMC of the first confirmed extragalactic [WC11] star, whose spectrum is dominated by C II emission, and the realization that the number of such objects is currently largely unconstrained. The survey, which imaged $\sim$50$~$deg$^2$ using on-band and off-band filters, will significantly increase the total census of these rare stars. In addition, each new LMC [WC] star has a known luminosity, a quantity quite uncertain in the Galactic sample. Multiple known C II emitters were easily recovered, validating the survey design. We find 38 new C II emission candidates; spectroscopy of the complete sample will be needed to ascertain their nature. In a preliminary spectroscopic reconnaissance, we observed three candidates, finding C II emission in each. One is a new [WC11]. Another shows both the narrow C II emission lines characteristic of a [WC11], but also broad emission of C IV, O V, and He II characteristic of a much hotter [WC4] star; we speculate that this is a binary [WC]. The third object shows weak C II emission, but the spectrum is dominated by a dense thicket of strong absorption lines, including numerous O II transitions. We conclude it is likely an unusual hot, hydrogen-poor post-AGB star, possibly in transition from [WC] to white dwarf. Even lacking a complete spectroscopic program, we can infer that late [WC] stars do not dominate the central stars of LMC planetary nebulae, and that the detected C II emitters are largely of an old population.
description: Accepted for publication in the Astrophysical Journal, 2020
Modeling Synchrotron Self-Compton and Klein-Nishina Effects in Gamma-Ray Burst Afterglows
Creators: name: Jacovich, Taylor
name: Beniamini, Paz
name: van der Horst, Alexander
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present a self-consistent way of modeling synchrotron self-Compton (SSC) effects in gamma-ray burst afterglows, with and without approximated Klein-Nishina suppressed scattering. We provide an analytic approximation of our results, so that it can be incorporated into the afterglow modeling code \texttt{boxfit}, which is currently based on pure synchrotron emission. We discuss the changes in spectral shape and evolution due to SSC effects, and comment on how these changes affect physical parameters derived from broadband modeling. We show that SSC effects can have a profound impact on the shape of the X-ray light curve using simulations including these effects. This leads to data that cannot be simultaneously fit well in both the X-ray and radio bands when considering synchrotron-only fits, and an inability to recover the correct physical parameters, with some fitted parameters deviating orders of magnitude from the simulated input parameters. This may have a significant impact on the physical parameter distributions based on previous broadband modeling efforts.
description: 15 pages, 11 figures, 6 tables. Submitted to MNRAS
Precision radiative corrections to the Dalitz plot of baryon semileptonic decays including the spin-momentum correlation of the decaying baryon and the emitted charged lepton
Creators: name: Neri, M.
name: Martinez, A.
name: Flores-Mendieta, Ruben
name: Torres, J. J.
name: Garcia, A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We calculate the radiative corrections to the angular correlation between the polarization of the decaying baryon and the direction of the emitted charged lepton in the semileptonic decays of spin one-half baryons to order (α/π)(q/M_1). The final results are presented, first, with the triple integration of the bremsstrahlung photon ready to be performed numerically and, second, in an analytical form. A third presentation of our results in the form of numerical arrays of coefficients to be multiplied on the quadratic products of form factors is discussed. This latter may be the most practical one to use in Monte Carlo simulations. A series of crosschecks is performed. The results are useful in the analysis of the Dalitz plot of precision experiments involving light and heavy quarks and is not compromised to fixing the form factors at predetermined values. It is assumed that the real photons are kinematically discriminated. Otherwise, our results have a general model-independent applicability.
description: 8 pages, RevTex4, 5 tables, no figures. Shortened version; results and conclusions remain unchanged
On p-adic comparison theorems for rigid analytic varieties, I
Creators: name: Colmez, Pierre
name: Nizioł, Wiesława
Publisher: name: Mathematisches Institut (Universität Münster)
Year: 2020
Subjects: subject: 510 Mathematics

description: We compute, in a stable range, the arithmetic p-adic ´etale cohomology of smooth rigid analytic and dagger varieties (without any assumption on the existence of a nice integral model) in terms of differential forms using syntomic methods. The main technical input is a construction of a Hyodo–Kato cohomology and a Hyodo–Kato isomorphism with de Rham cohomology.
THE CASE FOR ACCEPTABLE LEVELS OF ENVIRONMENTAL SELF-REGULATION IN THE POULTRY INDUSTRY: POLICY AND ECONOMIC IMPLICATIONS
Creators: name: Guru, Manjula V.
name: Goodwin, Harold L.
name: Guru, Manjula V.
name: Goodwin, Harold L.
Publisher: name: Unknown
Year: 2004
Subjects: Environmental Economics and Policy
Livestock Production/Industries

description: With increased production of poultry in key areas of the country, poultry litter is becoming the focus of increasing concern and scrutiny. This paper proposes to identify specific concerns of growers related to management of poultry litter, and analyze potential outcomes of possible environmental quality related clauses, based on field studies.
title: LIEBESLEBEN-Studie 2023. Wissen, Einstellungen und Verhalten zu sexueller Gesundheit und sexuell übertragbaren Infektionen (STI) Ergebnisse einer Repräsentativbefragung der Bundeszentrale für gesundheitliche Aufklärung, Köln
Creators: name: Halbach, Sarah Maria
name: Spille-Merkel, Christina
name: BZgA
Publisher: name: BZGA - Federal Centre for Health Education
Year: 2024

description: BZgA Kurzbericht
Micromobility, Space, and Indigenous Housing Schemes in Australia after World War II
Creators: name: Ellinghaus, Katherine
name: Healy, Sianan
Publisher: name: La Trobe
Year: 2024
Subjects: classificationCode: 4406
subject: Human geography

description: This article examines state efforts to assimilate Indigenous peoples through the spatial politics of housing design and the regulation of access to and use of houses, streets, and towns. Using two Australian case studies in the 1950s, Framlingham Aboriginal Reserve in Victoria and the Gap housing development in the Northern Territory, and inspired by recent scholarship on imperial networks and Indigenous mobilities, it explores Aboriginal people's negotiation of those eff orts through practices of both moving and staying put. We demonstrate the importance of micromobility-which we define as smallscale movements across short distances, in and out of buildings, along roads, and across townships-and argue that in order to fully appreciate the regulation of Indigenous mobility and Indigenous resistance to it, scholars must concentrate on the small, local, and seemingly insignificant as well as more drastic and permanent movement.
Far-UV Observations of a Thermal Interface in the Orion-Eridanus Superbubble
Creators: name: Kregenow, J.
name: Edelstein, J.
name: Korpela, E.
name: Welsh, B.
name: Heiles, C.
name: Ryu, K.
name: Min, K.
name: Lim, Y.
name: Yuk, I.
name: Jin, H.
name: Seon, K.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Diffuse far-UV emission arising from the edge of the Orion-Eridanus superbubble was observed with the SPEAR imaging spectrometer, revealing numerous emission lines arising from both atomic species and H2. Spatial variations in line intensities of CIV, SiII, and OVI, in comparison with soft X-ray, H-alpha and dust data, indicate that these ions are associated with processes at the interface between hot gas inside the bubble and the cooler ambient medium. Thus our observations probe physical conditions of an evolved thermal interface in the ISM.
description: 4 pages, 4 figures Accepted to ApJLetters
Raw Data for the article: Identification of a Circulating miRNA Signature to Stratify Acute Respiratory Distress Syndrome Patients
Creators: name: Vitale, Miceli
Publisher: name: Zenodo
Year: 2021
Subjects: ARDS subphenotypes
Inflammation
Lung injury
miRNA signature
miRNAs.

description: There is a need to improve acute respiratory distress syndrome (ARDS) diagnosis and management, particularly with extracorporeal membrane oxygenation (ECMO), and different biomarkers have been tested to implement a precision-focused approach. We included ARDS patients on veno-venous (V-V) ECMO in a prospective observational pilot study. Blood samples were obtained before cannulation, and screened for the expression of 754 circulating microRNA (miRNAs) using high-throughput qPCR and hierarchical cluster analysis. The miRNet database was used to predict target genes of deregulated miRNAs, and the DIANA tool was used to identify significant enrichment pathways. A hierarchical cluster of 229 miRNAs (identified after quality control screening) produced a clear separation of 11 patients into two groups: considering the baseline SAPS II, SOFA, and RESP score cluster A (n = 6) showed higher severity compared to cluster B (n = 5); p values < 0.05. After analysis of differentially expressed miRNAs between the two clusters, 95 deregulated miRNAs were identified, and reduced to 13 by in silico analysis. These miRNAs target genes implicated in tissue remodeling, immune system, and blood coagulation pathways. The blood levels of 13 miRNAs are altered in severe ARDS. Further investigations will have to match miRNA results with inflammatory biomarkers and clinical data.
Wal-Mart and Rural Poverty
Creators: name: Goetz, Stephan J.
name: Swaminathan, Hema
name: Goetz, Stephan J.
name: Swaminathan, Hema
Publisher: name: Unknown
Year: 2004
Subjects: subject: Marketing
subject: FOS: Economics and business

description: Wal-Mart® has created tremendous economic benefits for consumers by providing more choices at lower prices. The benefits are felt especially in communities that had only local retail monopolies prior to the arrival of the store. Yet no mretailer evokes stronger negative emotions than this chain. Recent media attention has focused on questionable labor practices and low wages combined with lack of benefits paid by the corporation, while academic studies have examined effects of the stores on retail wages, employment levels and numbers of establishments. Missing from the literature is an analysis of whether the "Wal-Mart effect" is large enough to measurably influence community-wide family poverty rates over time. This is the first study to carefully and comprehensively examine whether a relationship exists between existing and new locations of Wal-Mart stores and county-wide faily poverty rates.
Information Communication Technologies in Teaching English as a Foreign Language: A Teacher Perspective
Creators: name: Paneru Dev Raj
Publisher: name: Zenodo
Year: 2020
Subjects: information communication technology, English as a foreign language, exemplary teacher, communicative approach, educational significance

description: This study explores the status of information communication technology integration in teaching English as a foreign language in Czech elementary schools from a teacher perspective. Technologies are significant educational components in European schools, yet there are several inconsistencies between educational perspectives and teacher practices. Also, little is known about how technologies affect the teaching-learning process and how teachers actually apply ICT in the classroom to enhance communication skills as the goal of English instruction. Studies using the phenomenological framework, which recognizes the role of subjectivity in (social) construction, offer some comprehensive ideas about teacher competence as the main force in integrating technologies in teaching English so as to foster communication skills. However, studies that explore ICT integration by addressing teachers‘ qualitative pedagogical approaches and skills of using technologies are still very few in the European setting. To fill this gap, this paper, which reports on a research project based on the phenomenological case study design, explores how technologies are part of the exemplary English teachers’ everyday teaching in selected Czech elementary schools. The study found exemplary teacher practitioners similar in that they were significantly interactive in their perceptions, practices, and reflections involving their skills in using ICT in EFL classrooms with a view to enhancing communication skills. However, differences in the stimuli and barriers to the use of technologies as encountered by respective teachers were individually contextualized.
description: This is an empirical research-based paper published in the EDiTE Volume of 2019 as a part of the project Horizon 2020
Post-Minkowski action for point particles and a helically symmetric binary solution
Creators: name: Friedman, John L.
name: Uryu, Koji
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Two Fokker actions and corresponding equations of motion are obtained for two point particles in a post-Minkowski framework, in which the field of each particle is given by the half-retarded + half-advanced solution to the linearized Einstein equations. The first action is parametrization invariant, the second a generalization of the affinely parametrized quadratic action for a relativistic particle. Expressions for a conserved 4-momentum and angular momentum tensor are obtained in terms of the particles' trajectories in this post-Minkowski approximation. A formal solution to the equations of motion is found for a binary system with circular orbits. For a bound system of this kind, the post-Minkowski solution is a toy model that omits nonlinear terms of relevant post-Newtonian order; and we also obtain a Fokker action that is accurate to first post-Newtonian order, by adding to the post-Minkowski action a term cubic in the particle masses. Curiously, the conserved energy and angular momentum associated with the Fokker action are each finite and well-defined for this bound 2-particle system despite the fact that the total energy and angular momentum of the radiation field diverge. Corresponding solutions and conserved quantities are found for two scalar charges (for electromagnetic charges we exhibit the solution found by Schild). For a broad class of parametrization-invariant Fokker actions and for the affinely parametrized action, binary systems with circular orbits satisfy the relation $dE = ΩdL$ (a form of the first law of thermodynamics), relating the energy, angular velocity and angular momentum of nearby equilibrium configurations.
description: 33 pages, 7 figures, revised introduction, PRD in press
Quantum degeneracy of microcavity polaritons
Creators: name: Baas, Augustin
name: Karr, Jean-Philippe
name: Romanelli, Marco
name: Bramati, Alberto
name: Giacobino, Elisabeth
Publisher: name: arXiv
Year: 2005
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We investigate experimentally one of the main features of a quantum fluid constituted by exciton polaritons in a semiconductor microcavity, that is quantum degeneracy of a macroscopic fraction of the particles. We show that resonant pumping allows to create a macroscopic population of polaritons in one quantum state. Furthermore we demonstrate that parametric polariton scattering results in the transfer of a macroscopic population of polariton from one single quantum state into another one. Finally we briefly outline a simple method which provides direct evidence of the first-order spatial coherence of the transferred population.
Development of a novel antisapstain product
Creators: name: Kovacevic, Snezana B.
Publisher: name: University of British Columbia
Year: 2009

description: As a biodegradable product, wood is vulnerable to attack by microorganisms that can degrade it and cause loss in value. To prevent their colonization, wood can be protected by the application of chemical preservatives. Environmental and economic pressure on currently used chemicals has led to a situation where considerable effort is now directed toward the development of new preservatives. Among the most promising products are products that contain alkylammonium compounds (AACs). Based on laboratory tests, didecyl dimethyl ammonium chloride (DDAC) has been described as one of the most effective AAC used as wood preservatives. However, there were situations in the practice, where AACs had problems. Despite investigations into the reasons for these problems, no clarification was accomplished. This thesis describes the process of the development of a new wood preservative that would, while improving the characteristics of AACs, meet the objectives of efficient control of fungal growth, low toxicity, less potential for environmental impact, and easier disposal of treated products withdrawn from service. The project was divided into five general phases. The experiments of the first phase were designed to test several potential fungicides against moulds and stains in order to eliminate less promising formulations. In Phase 2, the research was extended to other groups of fungi, such as soft rot, brown rot, white rot and DDAC tolerant species. In both phases tests were done on agar plates. In Phase 3, the most promising formulations from Phase 1 and Phase 2 were tested on a wood substrate to determine the minimum amount of preservative that would be effective against sapstain fungi and moulds. In Phase 4, active components and additives were combined together in larger volumes and product formulation stability was investigated. The potential product solution was then submitted for toxicological testing. In the last (fifth) phase, the relation between efficacy and the required coverage and retention were examined by a simulation of real spraying conditions in wood treatment pilot plant. Samples of lumber were sprayed in the pilot plant with the test product and then stored outside in the yard to see if moulds, fungi or sapstain would develop. The results of this thesis relate to a synergistic wood preservative composition comprising a quaternary ammonium compound and an additional second active component. The laboratory work on agar plates and the wood substrate, as well as field tests after pilot-plant spraying, have shown that the new product works. It has proved its capability for controlling a large spectrum of wood destroying microorganisms and counteracting the phenomena of the development of fungal resistance toward the applied active components.
THE IMPACT OF MARKET MECHANISMS AND HACCP REGULATION ON FOOD SAFETY QUALITY
Creators: name: Ollinger, Michael
name: Ollinger, Michael
Publisher: name: Unknown
Year: 2004
Subjects: Food Consumption/Nutrition/Food Safety

description: Economists have long debated the relative effectiveness of markets and regulations in reaching socially desirable outcomes. This empirical study of meat and poultry food safety regulation suggests that market mechanisms and flexible regulatory instruments, e.g. HACCP systems, have a greater impact on food safety quality than less flexible regulatory instruments. Subject code: 9 (Food Safety and Nutrition).
Interacting Tsallis and Rényi Holographic Dark Energy with Hybrid Expansion Law
Creators: name: Bhattacharjee, Snehasish
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The manuscript presents the dynamics of Tsallis holographic dark energy (THDE) and Rényi holographic dark energy (RHDE) prescribed by a non-linear interaction in the FRW spacetime and for a scale factor evolving with a composite power law-exponential (hybrid) form. To construct the energy densities of these holographic dark energy models, I assume the Hubble cutoff to be the IR limit. I find that the deceleration parameter undergoes a signature flipping at a redshift $z$ consistent with observations. The EoS parameter $ω_{de}$ for both the HDE models exhibit quite contrasting dynamical behavior despite assuming values close to $-1$ at $z=0$ and therefore consistent with current observations. Next, I find the squared sound speed $c_{s}^{2}$ to be positive for the THDE model ensuring stability against perturbations, whereas for the RHDE model, $c_{s}^{2}<0$ implying instability against perturbations. Furthermore, I analyzed the evolutionary behavior of the EoS parameter of the HDE models by constructing the $ω_{de}-ω_{de}^{'}$ plane and find that the plane lies in the freezing region for the THDE model and in the thawing region for the RHDE model.
description: Revision submitted to Astrophysics and Space Science
THE IMPORTANCE OF SPATIAL DATA IN MODELING ACTUAL ENROLLMENT IN THE CONSERVATION RESERVE ENHANCEMENT PROGRAM (CREP)
Creators: name: Suter, Jordan F.
name: Bills, Nelson L.
name: Poe, Gregory L.
name: Suter, Jordan F.
name: Bills, Nelson L.
name: Poe, Gregory L.
Publisher: name: Unknown
Year: 2004
Subjects: Environmental Economics and Policy

description: This paper uses actual enrollment and Geographic Information Systems (GIS) data in six geographically diverse states to demonstrate that enrollment rates in the Conservation Reserve Enhancement Program (CREP) are a function of the incentives offered. If aggregate county land use data were used, as has been done previously, incentives appear insignificant.
TARIFF EQUIVALENCE OF AGRICULTURAL SUPPORT POLICIES
Creators: name: Martini, Roger
name: Dewbre, Joe
name: Martini, Roger
name: Dewbre, Joe
Publisher: name: Unknown
Year: 2004
Subjects: International Relations/Trade

description: A partial equilibrium model of agricultural markets and detailed PSE data are used to identify the uniform tariff that is 'equivalent' to existing producer support in terms of trade, production or farm household income. Resulting indicators are compared to other measures of policy intervention in agriculture.
Thermoelectric effect in superconducting nanostructures
Creators: name: Gurevich, V. L.
name: Kozub, V. I.
name: Shelankov, A. L.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We study thermoelectric effects in superconducting nanobridges and demonstrate that the magnitude of these effects can be comparable or even larger than that for a macroscopic superconducting circuit. The reason is related to a possibility to have very large gradients of electron temperature within the nanobridge. The corresponding heat conductivity problems are considered. It is shown that the nanoscale devices allow one to get rid of masking effects related to spurious magnetic fields.
description: minor changes in the text, RevTex, 7 pages
Revised Huang-Yang multipolar pseudopotential
Creators: name: Derevianko, Andrei
Publisher: name: arXiv
Year: 2005
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: A number of authors have recently pointed out inconsistencies of results obtained with the Huang-Yang multipolar pseudo-potential for low-energy scattering [K. Huang and K. C. Yang, Phys. Rev. A, v 105, 767 (1957); later revised in K. Huang, ``Statistical Mechanics'', (Wiley, New York, 1963)]. The conceptual validity of their original derivation has been questioned. Here I show that these inconsistencies are rather due to an {\em algebraic} mistake made by Huang and Yang. With the corrected error, I present the revised version of the multipolar pseudo-potential.
Attainable profiles for conservation laws with flux function spatially discontinuous at a single point
Creators: name: Ancona, Fabio
name: Chiri, Maria Teresa
Publisher: name: arXiv
Year: 2020
Subjects: subject: Analysis of PDEs (math.AP)
subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 35L65, 49K20

description: Consider a scalar conservation law with discontinuous flux \begin{equation*}\tag{1} \quad u_{t}+f(x,u)_{x}=0, \qquad f(x,u)= \begin{cases} f_l(u)\ &\text{if}\ x<0,\\ f_r(u)\ & \text{if} \ x>0, \end{cases} \end{equation*} where $u=u(x,t)$ is the state variable and $f_{l}$, $f_{r}$ are strictly convex maps. We study the Cauchy problem for (1) from the point of view of control theory regarding the initial datum as a control. Letting $u(x,t)\doteq \mathcal{S}_t^{AB} \overline u(x)$ denote the solution of the Cauchy problem for (1), with initial datum $u(\cdot,0)=\overline u$, that satisfy at $x=0$ the interface entropy condition associated to a connection $(A,B)$ (see~\cite{MR2195983}), we analyze the family of profiles that can be attained by (1) at a given time $T>0$: \begin{equation*} \mathcal{A}^{AB}(T)=\left\{\mathcal{S}_T^{AB} \,\overline u : \ \overline u\in{\bf L}^\infty(\mathbb{R})\right\}. \end{equation*} We provide a full characterization of $\mathcal{A}^{AB}(T)$ as a class of functions in $BV_{loc}(\mathbb{R}\setminus\{0\})$ that satisfy suitable Ole\vınik-type inequalities, and that admit one-sided limits at $x=0$ which satisfy specific conditions related to the interface entropy criterium. Relying on this characterisation, we establish the ${\bf L^1}_{loc}$-compactness of the set of attainable profiles when the initial data $\overline u$ vary in a given class of uniformly bounded functions, taking values in closed convex sets. We also discuss some applications of these results to optimization problems arising in porous media flow models for oil recovery and in traffic flow.
description: 25 pages, 7 figures
A COMPARISON OF CAPITAL MEASURES IN U.S. AGRICULTURE
Creators: name: Andersen, Matthew A.
name: Alston, Julian M.
name: Andersen, Matthew A.
name: Alston, Julian M.
Publisher: name: Unknown
Year: 2004
Subjects: Agricultural and Food Policy

description: This study compares two panel data sets that measure capital input at the state-level in U.S. agriculture. Despite a number of similarities between the data sets, such as the composition of assets, aggregation procedures, and time frame, an examination of the final estimates of capital service flows reveals that they are drastically different for all 48 contiguous states. We examine the methods used to construct the capital series for each data set, consider some important differences in data sources and the types of data used to construct the capital measures, and outline the main assumptions concerning depreciation, service lives, interest rates, aggregation, and the scope of goods included in each of the data sets. The analysis indicates that an important statistic in the index of capital services in U.S. agriculture is the stock of buildings on farms. We conclude that the primary difference between the measures of capital input in the data sets relates to differences in estimates of the stock of buildings on farms. Given the apparent importance of the measure of the stock of buildings in the aggregate index of capital services in U.S. agriculture, more research is needed to ensure that the measure of the stock of buildings is accurate and meaningful. Once this has been accomplished there should be more agreement on an accurate measure of capital services in U.S. agriculture.