cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Clearing Paths for Emergency Vehicles Using Shock Wave Theory and Vehicle-To-Vehicle Communication
Creators: name: Jordan, Craig Austin
Publisher: name: Old Dominion University Libraries
Year: 2012

description: A new strategy to enable an EV to navigate through congestion at signalized intersections more efficiently has been developed and is presented in this thesis. The proposed strategy involves communicating control messages to vehicles to change their driving behavior and to traffic signals to change their timing plans so that EV s can proceed through congested intersections as quickly as possible. To achieve this, specific vehicles are instructed to hold their positions to create a split in the vehicle queue at a critical location in one lane. The split allows the EV to change lanes and proceed unimpeded at its desired speed through the intersection while minimizing the disruption to background traffic. The proposed method uses shock wave theory to determine the critical split point in the vehicle queue. A microscopic traffic simulator is used for evaluating the effectiveness of the developed strategy. The results indicate that implementation of this strategy can reduce the response time of EV s.
Renormalization-Group Behavior of $ϕ^3$ Theories in $d=6$ Dimensions
Creators: name: Gracey, John A.
name: Ryttov, Thomas A.
name: Shrock, Robert
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate possible renormalization-group fixed points at nonzero coupling in $ϕ^3$ theories in six spacetime dimensions, using beta functions calculated to the four-loop level. We analyze three theories of this type, with (a) a one-component scalar, (b) a scalar transforming as the fundamental representation of a global ${\rm SU}(N)$ symmetry group, and (c) a scalar transforming as a bi-adjoint representation of a global ${\rm SU}(N) \otimes {\rm SU}(N)$ symmetry. We do not find robust evidence for such fixed points in theories (a) or (b). Theory (c) has the special feature that the one-loop term in the beta function is zero; implications of this are discussed.
description: 9 pages
Agricultural Trade Liberalization: Assessing the Consequences for Developing Countries
Creators: name: Bureau, Jean-Christophe
name: Jean, Sebastien
name: Matthews, Alan
name: Bureau, Jean-Christophe
name: Jean, Sebastien
name: Matthews, Alan
Publisher: name: Unknown
Year: 2005
Subjects: subject: International Development
subject: International Relations/Trade
subject: agricultural trade liberalization
subject: WTO
subject: developing countries

description: Recent analyses suggest that the impact of agricultural trade liberalization on developing countries will be very uneven. Simulations suggest that the effects of agricultural trade liberalization will be small, overall, and are likely to be negative for a significant number of developing countries. The Doha Round focuses on tariff issues, but these countries currently have practically duty-free access to European and North American markets under preferential regimes. Multilateral liberalization will erode the benefits of these preferences, which are presently rather well utilized in the agricultural sector. The main obstacles to the exports of the poorest countries appear to be in the non-tariff area (sanitary, phytosanitary standards) which increasingly originate from the private sector and are not dealt with under the Doha framework (traceability requirements, etc.). An agreement in Doha is unlikely to solve these problems and open large markets for the poorest countries. While this is not an argument to give up multilateral liberalization, a more specific and differentiated treatment should be considered in WTO rules, and corrective measures should be implemented.
Solution to the Balitsky-Kovchegov equation in the saturation domain
Creators: name: Kozlov, M.
name: Levin, E.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The solution to the Balitsky-Kovchegov equation is found in the deep saturation domain. The controversy between different approaches regarding the asymptotic behaviour of the scattering amplitude is solved. It is shown that the dipole amplitude behaves as $ 1 - \exp (- z + \ln z)$ with $ z = \ln (r^2 Q^2_s)$ ($ r$ -size of the dipole, $Q_s$ is the saturation scale) in the deep saturation region. This solution is developed from the scaling solution to the homogeneous Balitsky-Kovchegov equation. The dangers associated with making simplifications in the BFKL kernel, to investigate the asymptotic behaviour of the scattering amplitude, is pointed out . In particular, the fact that the Balitsky-Kovchegov equation belongs to the Fisher-Kolmogorov-Petrovsky-Piscounov -type of equation, needs further careful investigation.
description: 19 pages, 3 figures
Quantum Gravity Witness via Entanglement of Masses: Casimir Screening
Creators: name: van de Kamp, Thomas W.
name: Marshman, Ryan J.
name: Bose, Sougato
name: Mazumdar, Anupam
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: A recently proposed experimental protocol for Quantum Gravity induced Entanglement of Masses (QGEM) requires in principle realizable, but still very ambitious, set of parameters in matter-wave interferometry. Motivated by easing the experimental realization, in this paper, we consider the parameter space allowed by a slightly modified experimental design, which mitigates the Casimir potential between two spherical neutral test-masses by separating the two macroscopic interferometers by a thin conducting plate. Although this set-up will reintroduce a Casimir potential between the conducting plate and the masses, there are several advantages of this design. First, the quantum gravity induced entanglement between the two superposed masses will have no Casimir background. Secondly, the matter-wave interferometry itself will be greatly facilitated by allowing both the mass $10^{-16}-10^{-15}$kg and the superposition size $Δx \sim 20 μ$m to be a one-two order of magnitude smaller than those proposed earlier, and thereby also two orders of magnitude smaller magnetic field gradient of $10^4$Tm$^{-1}$ to create that superposition through the Stern-Gerlach effect. In this context, we will further investigate the collisional decoherences and decoherence due to vibrational modes of the conducting plate.
description: 13 Pages, 6 Figures
The Effects of the EU Enlargement on the Milk Sector in the Czech Republic and Prospects of Future Development
Creators: name: Bošková, Iveta
name: Bošková, Iveta
Publisher: name: Unknown
Year: 2005
Subjects: subject: International Relations/Trade
subject: milk sector
subject: distribution flows
subject: changes

description: Milk production belongs to conventional branches of agricultural production in the Czech Republic. Its results affect economics results of the whole animal production by significant way because milk sector participates by more than one third on the value of the animal production and almost by 17% on the rough agricultural production. The EU enlargement brought in this sector the amendment in the direction and volume of distribution flows both of raw material - i.e. raw cows´ milk and of processed milk products. The identification of amendments in the whole chain of production, processing and final utilization, including impacts on price development and estimation of future development should contribute to better understanding and adaptation of Czech farmers and Czech milk processors to new economic and business conditions.
Additional file 1 of Association of glial and neuronal degeneration markers with Alzheimer’s disease cerebrospinal fluid profile and cognitive functions
Creators: name: Teitsdottir, Unnur D.
name: Jonsdottir, Maria K.
name: Lund, Sigrun H.
name: Darreh-Shori, Taher
name: Snaedal, Jon
name: Petur H. Petersen
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Cell Biology
subject: Neuroscience
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Additional file 1: Figure 1. Levels of CSF NFL, YKL-40, S100B and GFAP by CSF profile. Table 1. Univariable ROC analysis for distinguishing between CSF profile groups stratified by gender. Figure 2. Pearson’s correlations between levels of CSF NFL with neuropsychological tests reflecting verbal episodic memory by CSF profile. Figure 3. Pearson’s correlations between levels of CSF GFAP with neuropsychological tests reflecting processing speed and executive functions by CSF profile. Figure 4. Pearson’s correlations between CSF levels of NFL and T-tau with verbal episodic memory and GFAP with processing speed and executive functions, within the whole cohort and by CSF profile. Table 2. Pearson’s correlations between CSF markers, age, education and composite z-scores reflecting cognitive domains.
Additional file 1 of The high cost of unpaid care by young people:health and economic impacts of providing unpaid care
Creators: name: Brimblecombe, Nicola
name: Knapp, Martin
name: King, Derek
name: Stevens, Madeleine
name: Farias, Javiera Cartagena
Publisher: name: figshare
Year: 2020
Subjects: subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: Additional file 1: Table 3. Regression analyses of associations between providing unpaid care at time 1 and employment status and health outcomes at time 2. Results of the regression models of the consequences at time 2 associated with being a carer at time 1: results for all carers. Data: Wave 6 (2014/2016) and Wave 7 (2015/2017) of the UK Household Longitudinal Study.
A Measurement of the Angular Power Spectrum of the CMB Temperature Anisotropy from the 2003 Flight of Boomerang
Creators: name: Jones, W. C.
name: Ade, P
name: Bock, J
name: Bond, J
name: Borrill, J
name: Boscaleri, A
name: Cabella, P
name: Contaldi, C
name: Crill, B
name: de Bernardis, P
name: De Gasperis, G
name: de Oliveira-Costa, A
name: De Troia, G
name: Di Stefano, G
name: Hivon, E
name: Jaffe, A
name: Kisner, T
name: Lange, A
name: MacTavish, C
name: Masi, S
name: Mauskopf, P
name: Melchiorri, A
name: Montroy, T
name: Natoli, P
name: Netterfield, B
name: Pascale, E
name: Piacentini, F
name: Pogosyan, D
name: Polenta, G
name: Prunet, S
name: Ricciardi, S
name: Romeo, G
name: Ruhl, J
name: Santini, P
name: Tegmark, M
name: Veneziani, M
name: Vittorio, N
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report on observations of the Cosmic Microwave Background (CMB) obtained during the January 2003 flight of Boomerang . These results are derived from 195 hours of observation with four 145 GHz Polarization Sensitive Bolometer (PSB) pairs, identical in design to the four 143 GHz Planck HFI polarized pixels. The data include 75 hours of observations distributed over 1.84% of the sky with an additional 120 hours concentrated on the central portion of the field, itself representing 0.22% of the full sky. From these data we derive an estimate of the angular power spectrum of temperature fluctuations of the CMB in 24 bands over the multipole range (50 < l < 1500). A series of features, consistent with those expected from acoustic oscillations in the primordial photon-baryon fluid, are clearly evident in the power spectrum, as is the exponential damping of power on scales smaller than the photon mean free path at the epoch of last scattering (l > 900). As a consistency check, the collaboration has performed two fully independent analyses of the time ordered data, which are found to be in excellent agreement.
description: 11 pages, 7 figures, 3 tables. High resolution figures and data are available at http://cmb.phys.cwru.edu/boomerang/ and http://oberon.roma1.infn.it/boomerang/b2k
Additional file 2 of The high cost of unpaid care by young people:health and economic impacts of providing unpaid care
Creators: name: Brimblecombe, Nicola
name: Knapp, Martin
name: King, Derek
name: Stevens, Madeleine
name: Farias, Javiera Cartagena
Publisher: name: figshare
Year: 2020
Subjects: subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: Additional file 2: Table 4. Regression analyses of associations between providing unpaid care at time 1 and costs associated with economic and health outcomes at time 2. Results of the regression models of the individual and state economic consequences time 2 associated with being a carer at time 1: results for all carers. Data: Wave 6 (2014/2016) and Wave 7 (2015/2017) of the UK Household Longitudinal Study.
The sense of rotation of subhaloes in cosmological dark matter haloes
Creators: name: Warnick, Kristin
name: Knebe, Alexander
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present a detailed analysis of the velocity distribution and orientation of orbits of subhaloes in high resolution cosmological simulations of dark matter haloes. We find a trend for substructure to preferentially revolve in the same direction as the sense of rotation of the host halo: there is an excess of prograde satellite haloes. Throughout our suite of nine host haloes (eight cluster sized objects and one galactic halo) there are on average 59% of the satellites corotating with the host. Even when including satellites out to five virial radii of the host, the signal still remains pointing out the relation of the signal with the infall pattern of subhaloes. However, the fraction of prograde satellites weakens to about 53% when observing the data along a (random) line-of-sight and deriving the distributions in a way an observer would infer them. This decrease in the observed prograde fraction has its origin in the technique used by the observer to determine the sense of rotation, which results in a possible misclassification of non-circular orbits. We conclude that the existence of satellites on corotating orbits is another prediction of the cold dark matter structure formation scenario, although there will be difficulties to verify it observationally. Since the galactic halo simulation gave the same result as the cluster-sized simulations, we assume that the fraction of prograde orbits is independent of the scale of the system, though more galactic simulations would be necessary to confirm this.
description: 16 pages, 9 figures, accepted by MNRAS; extended comparison with previous work (mistake corrected) and observations, typos corrected
Canada's Domestic Carbon Emission and Trading Institution: Rules, Workability, and the Role of Offsets
Creators: name: Thomassin, Paul J.
name: Thomassin, Paul J.
Publisher: name: Unknown
Year: 2006
Subjects: Environmental Economics and Policy

description: When Canada ratified the Kyoto Protocol in December 2002, the country committed to decrease its Greenhouse Gas (GHG) emissions by 6% below its 1990 level. It is estimated that this commitment will require Canada to decrease emissions by 270 megatonnes (Mt) per year during the first commitment period 2008 to 2012. Carbon emission trading institutions have been identified, both internationally and domestically, as being a cost effective mechanism for supplying carbon emission reductions. The paper investigates two alternative mechanisms that can be used to allocate carbon and the potential development of the carbon offset credit market. The offset market could be important for the agriculture and forestry sectors, since these sectors have the potential to sequester carbon or reduce greenhouse gas emissions through various mitigation actions. Government is currently considering various types of offset credit vehicles in order to address the concern of permanence associated with carbon sequestration. These include temporary credits and "permanent offset credits." Temporary credits would provide a one year deferment for the purchaser. The "permanent offset credit" would give the buyer a permanent reduction but would require the producer of the credit to conduct the practice for a particular period plus some liability period during which the carbon would have to be stored. The choice of credit type, liability replacement rule, liability clock has an impact on the value of the "permanent offset credit." The paper estimates the economic incentives that can be expected from the alternative institutional arrangements.
Spatial Structure of the Cooper Pair
Creators: name: Kadin, Alan M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The Cooper pair is generally analyzed in momentum space, but its real-space structure also follows directly from the BCS theory. It is shown here that this leads to a spherically symmetrical quasi-atomic wavefunction, with an identical "onion-like" layered structure for each of the electrons constituting the Cooper pair, with charge layers ~ 0.1 nm and a radius ~ 100 nm for a classic BCS superconductor. This charge modulation induces a corresponding charge modulation in the background ionic lattice, and the attractive interaction between these two opposite charge modulations produces the binding energy of the Cooper pair. This physically-based interaction potential is similar to that in the simple BCS approximation. The implications of this real-space picture for understanding conventional and exotic superconductors are discussed.
description: 14 pages, 4 figures
Marketing Channel and Technology Adoption: Chinese Villages in the Local Horticulture Market
Creators: name: Wang, L.
name: Rozelle, Scott
name: Huang, J.
name: Reardon, Thomas
name: Dong, X.
name: Wang, L.
name: Rozelle, Scott
name: Huang, J.
name: Reardon, Thomas
name: Dong, X.
Publisher: name: Unknown
Year: 2006
Subjects: Crop Production/Industries

description: China has been experiencing the substantial changes in agricultural sectors in the past decades. Interaction between diversified channels for marketing agricultural products and modern technology adoption are important for restructuring agriculture and improving productivity, but fewer researches have been done in this field in China. With the village - level data collected a round Beijing, the capital of China, this study attempts to find out the major market channel(s) in rural China and its (their) linkage with technology innovation in the horticulture sector. The study finds that small brokers still dominate horticultural product distribution in rural area because of their cheap labor costs; however, the modern supply chain components such as supermarkets are penetrating the rural area and competing with small brokers. Modern market channels stimulate the adoptions of new technology, whereas technology adoption had few effects on modern market channel selection. In addition, shares of crop such as vegetables and fruits are soaring; surprisingly villages farther away from Beijing experienced faster crop restructuring with higher specialization. In the future we try to incorporate wholesalers or supermarkets into the analysis, which can depict a more complete picture of rural market development.
Gravitational helicity interaction
Creators: name: Barbieri, A.
name: Guadagnini, E.
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: For gravitational deflections of massless particles of given helicity from a classical rotating body, we describe the general relativity corrections to the geometric optics approximation. We compute the corresponding scattering cross sections for neutrinos, photons and gravitons to lowest order in the gravitational coupling constant. We find that the helicity coupling to spacetime geometry modifies the ray deflection formula of the geometric optics, so that rays of different helicity are deflected by different amounts. We also discuss the validity range of the Born approximation.
description: 16 pages, 1 figure, to be published in Nuclear Physics B
Two-loop virtual light-by-light scattering corrections to the bound-electron $g$ factor
Creators: name: Debierre, V.
name: Sikora, B.
name: Cakir, H.
name: Oreshkina, N. S.
name: Yerokhin, V. A.
name: Keitel, C. H.
name: Harman, Z.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A critical set of two-loop QED corrections to the $g$ factor of hydrogenlike ions is calculated without expansion in the nuclear binding field. These corrections are due to the polarization of the external magnetic field by the quantum vacuum, which is dressed by the binding field. The result obtained for the self-energy--magnetic-loop diagrams is compared with the current state-of-the-art result, derived through a perturbative expansion in the binding strength parameter $Zα$, with $Z$ the atomic number and $α$ the fine-structure constant. Agreement is found in the $Z\rightarrow0$ limit. However, even for very light ions, the perturbative result fails to approximate the magnitude of the corresponding correction to the $g$ factor. The total correction to the $g$ factor coming from all diagrams considered in this work is found to be highly relevant for upcoming experimental tests of fundamental physics with highly charged ions.
FixKit: A Program Repair Collection for Python
Creators: name: Smytzek, Marius
name: Eberlein, Martin
name: Kai, Werk
name: Lars, Grunske
name: Zeller, Andreas
Publisher: name: CISPA
Year: 2024

description: In recent years automatic program repair has gained much attention in the research community.
 Generally, program repair approaches consider a faulty program and a test suite that captures the program's intended behavior.
 The goal is to automatically generate a patch that corrects the fault by identifying the faulty code locations, suggesting a candidate fix, and validating it against the provided tests.
 However, most existing program repair tools focus on Java or C programs, while Python, one of the most popular programming languages, lacks approaches that work on it.

 We present FixKit a collection of *five* program repair approaches for Python programs.
 Moreover, our framework allows for easy integration of new repair approaches and swapping individual components, for instance, the used fault localization.
 Our framework enables researchers to effortlessly compare and investigate various repair, fault localization, and validation approaches on a common set of techniques.
Spitzer and ISO Galaxy Counts in the Mid-Infrared
Creators: name: Pearson, Chris P.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Galaxy source counts that simultaneously fit the deep mid-infrared surveys at 24 microns and 15 microns made by the Spitzer Space Telescope and the Infrared Space Observatory (ISO) respectively are presented for two phenomenological models. The models are based on starburst and luminous infrared galaxy dominated populations. Both models produce excellent fits to the counts in both wavebands and provide an explanation for the high redshift population seen in the longer Spitzer 24 micron band supporting the hypothesis that they are luminous-ultraluminous infrared galaxies at z=2-3, being the mid-infrared counterparts to the sub-mm galaxy population. The source counts are characterized by strong evolution to redshift unity, followed by less drastic evolution to higher redshift. The number-redshift distributions in both wavebands are well explained by the effect of the many mid-infrared features passing through the observation windows. The sharp upturn at around a milliJansky in the 15 micron counts in particular depends critically on the distribution of mid-infrared features around 12 microns, in the assumed spectral energy distribution.
description: 6 pages, 2 figures, accepted for publication MNRAS
Higher Curvature Quantum Gravity and Large Extra Dimensions
Creators: name: Demir, Durmus A.
name: Tanyildizi, S. Hanif
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss effective interactions among brane matter induced by modifications of higher dimensional Einstein gravity via the replacement of Einstein-Hilbert term with a generic function f(R) of the curvature scalar R. After deriving the graviton propagator, we analyze impact of virtual graviton exchanges on particle interactions, and conclude that f(R) gravity effects are best probed by high-energy processes involving massive gauge bosons, heavy fermions or the Higgs boson. We perform a comparative analysis of the predictions of f(R) gravity and of Arkani-Hamed-Dvali-Dimopoulos (ADD) scenario, and find that the former competes with the latter when f''(0) is positive and comparable to the fundamental scale of gravity in higher dimensions. In addition, we briefly discuss graviton emission from the brane as well as its decays into brane-localized matter, and find that they hardly compete with the ADD expectations. Possible existence of higher-curvature gravitational interactions in large extra spatial dimensions opens up various signatures to be confronted with existing and future collider experiments.
description: 19 pp, 2 figs. Added references, corrected typos
Noise and ergodic properties of Brownian motion in an optical tweezer: looking at the crossover between Wiener and Ornstein-Uhlenbeck processes
Creators: name: Goerlich, Rémi
name: Li, Minghao
name: Albert, Samuel
name: Manfredi, Giovanni
name: Hervieux, Paul-Antoine
name: Genet, Cyriaque
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: We characterize throughout the spectral range of an optical trap the nature of the noise at play and the ergodic properties of the corresponding Brownian motion of an overdamped trapped single microsphere, comparing experimental, analytical and simulated data. We carefully analyze noise and ergodic properties $(i)$ using the Allan variance for characterizing the noise and $(ii)$ exploiting a test of ergodicity tailored for experiments done over finite times. We derive these two observables in the low-frequency Ornstein-Uhlenbeck trapped-diffusion regime and study analytically their evolution towards the high-frequency Wiener free-diffusion regime, in a very good agreement with simulated and experimental results. This leads to reveal noise and ergodic spectral signatures associated with the distinctive features of both regimes.
description: 13 pages, 11 figures
General Recipe for Designing Photonic Crystal Cavities
Creators: name: Englund, Dirk
name: Fushman, Ilya
name: Vuckovic, Jelena
Publisher: name: arXiv
Year: 2005
Subjects: subject: Optics (physics.optics)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We describe a general recipe for designing high-quality factor (Q) photonic crystal cavities with small mode volumes. We first derive a simple expression for out-of-plane losses in terms of the k-space distribution of the cavity mode. Using this, we select a field that will result in a high Q. We then derive an analytical relation between the cavity field and the dielectric constant along a high symmetry direction, and use it to confine our desired mode. By employing this inverse problem approach, we are able to design photonic crystal cavities with Q > 4*10^6 and mode volumes V ~ (λ/n)^3. Our approach completely eliminates parameter space searches in photonic crystal cavity design, and allows rapid optimization of a large range of photonic crystal cavities. Finally, we study the limit of the out-of-plane cavity Q and mode volume ratio.
description: 15 pages. A version with higher quality figures can be found at http://www.stanford.edu/group/nqp/jv_files/publications.html
Factors Related to the Adoption of Good Agrarian Practices (GAP) in Plastic Covered Horticulture of Southeastern Spain
Creators: name: Bertuglia, Adriana
name: Calatrava-Requena, Javier
name: Bertuglia, Adriana
name: Calatrava-Requena, Javier
Publisher: name: Unknown
Year: 2006
Subjects: Crop Production/Industries

description: The adoption by farmers of Good Agrarian Practices (GAP), that favouring the environment and assure food quality and safety, is being a frequent fact. Considering the plastic covered horticulture, these kind of practices can be of different nature: use of organic fertiliser, made of crops rotations, use of recyclable plastic as greenhouse cover, good management of organic residuals (use of containers), recycling of plastic containers, etc. This paper, wich try to analyse the adoption of GAP by protected vegetable growers, is based on a survey carried out to 114 farmers in the southeast coastline of Spain, asking for the level of adoption of a set of GAP. From the information gathered on the suvey, an aggregated index of adoption has been performed, and the relationship between this index and some structural and managerial characteristics of the greenhouses, and some sociocultural variables of the growers (age, study, agrarian formation, etc) has been analysed, trying to identify factors related to adoption of GAP, which could probably help to design strategies for the increase of the level of GAP adoption in the system.
Stringent Phenomenological Investigation into Heterotic String Optical Unification
Creators: name: Perkins, J.
name: Dundee, B.
name: Obousy, R.
name: Hatten, S.
name: Kasper, E.
name: Robinson, M.
name: Sloan, C.
name: Stone, K.
name: Cleaver, G.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: For the weakly coupled heterotic string (WCHS) there is a well-known factor of twenty conflict between the minimum string coupling unification scale, Lambda_H ~5x10^(17) GeV, and the projected MSSM unification scale, Lambda_U ~ 2.5x10^(16) GeV, assuming an intermediate scale desert (ISD). Renormalization effects of intermediate scale MSSM-charged exotics (ISME) (endemic to quasi-realistic string models) can resolve this issue, pushing the MSSM scale up to the string scale. However, for a generic string model, this implies that the projected Lambda_U unification under ISD is accidental. If the true unification scale is 5.0x10^(17) GeV, is it possible that illusionary unification at 2.5x10^(17) GeV in the ISD scenario is not accidental? If it is not, then under what conditions would the assumption of ISME in a WCHS model imply apparent unification at Lambda_U when ISD is falsely assumed? Geidt's "optical unification" suggests that Lambda_U is not accidental, by offering a mechanism whereby a generic MSSM scale Lambda_U < Lambda_H is guaranteed. A WCHS model was constructed that offers the possibility of optical unification, depending on the availability of anomaly-cancelling flat directions meeting certain requirements. This paper reports on the systematic investigation of the optical unification properties of the set of stringent flat directions of this model. Stringent flat directions can be guaranteed to be F-flat to all finite order (or to at least a given finite order consistent with electroweak scale supersymmetry breaking) and can be viewed as the likely roots of more general flat directions. Analysis of the phenomenology of stringent flat directions gives an indication of the remaining optical unification phenomenology that must be garnered by flat directions developed from them.
description: standard latex, 18 pages of text
An Economy-wide Analysis of Impacts of WTO Tiered Formula for Tariff Reduction on Taiwan
Creators: name: Hsu, Shih-Hsun
name: Chang, C.
name: Li, S.
name: Chen, Y.
name: Hsu, Shih-Hsun
name: Chang, C.
name: Li, S.
name: Chen, Y.
Publisher: name: Unknown
Year: 2006
Subjects: subject: International Relations/Trade
subject: Computable General Equilibrium (CGE)
subject: Tiered Formula
subject: WTO

description: In this study we use Taiwan as a case study to provide an economy-wide analysis of impacts on Taiwan of WTO tariff reduction schemes with different combinations of thresholds and reduction rates. The model we utilized in this study is Taiwan General Equilibrium Model with a WTO module (TAIGEM-WTO, hereafter) that is a multi-sectoral computable general equilibrium (CGE) model of the Taiwan's economy derived from Australian ORANI model (Dixon, Parmenter, Sutton and Vincent, 1982). Simulation results show that results are more sensitive to the scheme of tariff-reduction (i.e., Category 1, 2, and 3) than the tiered levels (i.e., A, B, C, and D) and as a strategy we should pay more attention to the arguments related to the amounts of tariff-reduction. Moreover, changes in nominal average tariff rates are more sensitive and shocks to the economy are more severe when we change the tariff reduction categories rather than the tiered levels. This conclusion also applies to the tiered reduction case when only sensitive products are considered. Finally, simulations with sector's bound rate calculated using arithmetic means have bigger effects than those using import values as weights. Therefore, sector's bound rate using import values as weights would be preferred.
Factors Affecting the Development of Land Rental Markets in China - A Case Study for Puding County, Guizhou Province
Creators: name: Tu, Qin
name: Heerink, Nico
name: Xing, Li
name: Tu, Qin
name: Heerink, Nico
name: Xing, Li
Publisher: name: Unknown
Year: 2006
Subjects: subject: Land Economics/Use
subject: land rental markets
subject: off-farm
subject: China
subject: binary probit
subject: data correction

description: The development of land rental markets can enhance agricultural productivity and equity by facilitating transfers of land to more productive farmers and facilitating the participation in the non-farm economy of less productive farmers. In recent years there has been a rapid increase in the incidence of land rental activities in China. Large differences exist, however, both between regions and within regions in the share of households participating in land renting activities. The purpose of this study is to analyze the factors affecting the development of land rental markets in one of the poorest regions within China, namely Puding County in Guizhou Province. Data from 792 households in three villages are used to analyze the participation in land rental markets. For renting out of land, a binary probit model is used that corrects for missing observation caused by migrated households. We find that the land rental market is mainly driven by off-farm employment; land-labor ratios do not play a significant role in land renting out. Other important findings are that households belonging to minority groups are significantly more inactive in the land rental market, and that the age of the household head shows an inverted U-shaped relationship with land renting in. Participation in off-farm employment is relatively low in the research area. With further increases in off-farm work, the land rental market is expected to develop further. Households belonging to minority groups, however, are unlikely to participate much. Appropriate measures taken by local governments to stimulate land rental participation by minority groups can be an important way to stimulate agricultural productivity and total household incomes of such minority groups.
Inflation Wars: A New Hope
Creators: name: Keeley, Ryan E.
name: Shafieloo, Arman
name: Hazra, Dhiraj Kumar
name: Souradeep, Tarun
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We explore a class of primordial power spectra that can fit the observed anisotropies in the cosmic microwave background well and that predicts a value for the Hubble parameter consistent with the local measurement of $H_0 = 74$ km/s/Mpc. This class of primordial power spectrum consists of a continuous deformation between the best-fit power law primordial power spectrum and the primordial power spectrum derived from the modified Richardson-Lucy deconvolution algorithm applied to the $C_\ell$s of best-fit power law primordial power spectrum. We find that linear interpolation half-way between the power law and modified Richardson-Lucy power spectra fits the Planck data better than the best-fit $Λ$CDM by $Δ\log\mathcal{L} = 2.5$. In effect, this class of deformations of the primordial power spectra offer a new dimension which is correlated with the Hubble parameter. This correlation causes the best-fit value for $H_0$ to shift and the uncertainty to expand to $H_0 = 70.2 \pm 1.2$ km/s/Mpc. When considering the Planck dataset combined with the Cepheid $H_0$ measurement, the best-fit $H_0$ becomes $H_0 = 71.8 \pm 0.9$ km/s/Mpc. We also compute a Bayes factor of $\log K = 5.7$ in favor of the deformation model.
description: 6 pages, 4 figures
Innovations in Government Responses to Catastrophic Risk Sharing for Agriculture in Developing Countries
Creators: name: Skees, Jerry R.
name: Barnett, Barry J.
name: Hartell, Jason G.
name: Skees, Jerry R.
name: Barnett, Barry J.
name: Hartell, Jason G.
Publisher: name: Unknown
Year: 2006
Subjects: Agricultural and Food Policy
Risk and Uncertainty

description: Markets for transferring catastrophic risk in agriculture are woefully lacking in developing countries. Even in developed countries, markets for transferring the risk of crop losses caused by natural hazards generally exist only with large government subsidies. However, such subsidies can be expensive, inefficient, and have detrimental implications that make future catastrophes even worse. In developing countries fiscal constraints limit the degree to which governments can subsidize markets for agricultural risk-sharing. Nonetheless, there are specific things governments can do to facilitate the development of these markets. This paper addresses the role of government in agricultural risk-sharing for natural disasters that impact crop yields or livestock mortality.
Impact of Plant Breeders Rights on Technology Availability in China
Creators: name: Hu, Ruifa
name: Huang, Jie
name: Pray, Carl E.
name: Huang, Jikun
name: Hu, Ruifa
name: Huang, Jie
name: Pray, Carl E.
name: Huang, Jikun
Publisher: name: Unknown
Year: 2006
Subjects: Research and Development/Tech Change/Emerging Technologies

description: There has been considerable debate but little empirical analysis among academics, policy makers, and civil society about whether intellectual property rights would induce private research in developing countries. China passed its plant variety protection act (PVPA) in 1997 which allowed us to do some initial testing of this proposition. We used a unique data set on the seed price, area planted, morphological characteristics, and institutional sources of all the important varieties of rice in three provinces of China to estimate the impact of PVPA on seed prices and area planted to a variety. We found that protected varieties have higher prices than unprotected varieties, but that they are grown on smaller area, which means less seed is sold. Our data suggests that the increase in seed price is more than enough to compensate for the decline in demand and to pay the cost o f obtaining protection. Thus, seed companies can increase their profits by protecting new rice varieties. These results also provide some preliminary quantitative evidence to suggest that in the case of rice in China PVPA may provide some incentive for firms invest in research. However, we could not directly test whether PVPA induces more research because we do not have data on rice research expenditures by research institutes or by variety.
Student Academic Engagement and Success (SAES) survey
Creators: name: Scoulas, Jung Mi
name: De Groote, Sandra
name: Shotick, Kimberly
name: Osorio, Nestor
Publisher: name: University of Illinois Chicago
Year: 2024
Subjects: classificationCode: 4610
subject: Library and information studies

description: Project description: This two-year research project, funded by the Institute of Museum and Library Sciences (funding number: IMLS LG-252338-OLS-22), develops assessment tools to capture the undergraduate students’ academic engagement including library use, psychological factors, and their own academic success. It explores how students define success, the library’s role in their achievement, and factors correlating with GPA.Student Academic Engagement and Success (SAES) SurveyThis is a generic version of the Student Academic Engagement and Success (SAES) survey. Both a Word and Qualtrics version of the survey are provided.Scoulas, Jung Mi; De Groote, Sandra; Shotick, Kimberly; Osorio, Nestor (2024). Student Academic Engagement and Success (SAES) survey. University of Illinois at Chicago. Educational resource. https://doi.org/10.25417/uic.26828848The Assessment Tools are licensed under CC BY-NC-SA-4.0.Instructional Videos: https://libscholar.digital.uic.edu/assessment-tools/recordings/Questions about dataset, please contact at assessmenttools@uic.eduFunding: IMLS LG-252338-OLS-22 (https://www.imls.gov/grants/awarded/lg-252338-ols-22)Please see https://libscholar.digital.uic.edu/assessment-tools for information on how to use the survey tool.
Comprehensive Photometric Investigation of an Active Early K-type Contact System -- IL Cnc
Creators: name: Liu, N. -P.
name: Sarotsakuchai, T.
name: Rattanasoon, S.
name: Zhang, B.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Comprehensive photometric investigation was carried out to the early K-type contact binary - IL Cnc. A few light curves from both ground-based telescopes and the Kepler space telescope were obtained (or downloaded) and then analyzed in detail. They are mostly found to be asymmetric and there are even continuously changing O'Connell effect in the light curves from Kepler K2 data, suggesting the system to be highly active. Using the Wilson-Devinney code (version 2013), photometric solutions were derived and then compared. It is found that the calculation of the mass ratio is easily affected by the spot settings. Combining the radial velocities determined from LAMOST median resolution spectral data, the mass ratio of the binary components is found to be $M_2/M_1 = 1.76\pm 0.05$. The components are in shallow contact ($f\sim 9\%$) and have a temperature difference about $T_2 - T_1 = -280\pm 20$ K. The system is demonstrated to be W-subtype, which may be a common feature of K-type contact binaries. The masses of the binary components were estimated to be $M_1\sim 0.51$ M$_{sun}$ and $M_2\sim 0.90$ M$_{sun}$. The values are in good agreement with that deduced from the parallax data of Gaia. The results suggest that the primary component lacks luminosity compared with the zero main sequence. The H$α$ spectral line of the primary component is found to be peculiar. Combining newly determined minimum light times with those collected from literature, the orbital period of IL Cnc is studied. It is found that the (O$-$C)s of the primary minima show sinusoidal variation while the secondary do not. The oscillation is more likely to be caused by the starspot activities. Yet this assumption needs more data to support.
Rural Diversification and Social Capital in Rural Japan
Creators: name: Sakurai, Seiichi
name: Yokoyama, Shigeki
name: Sakurai, Seiichi
name: Yokoyama, Shigeki
Publisher: name: Unknown
Year: 2006
Subjects: Community/Rural/Urban Development
Institutional and Behavioral Economics

description: This study investigates the effect of community factors on the development and diversification of rural Japan. Diversification is a matter of concern in rural communities as a means of revitalizing regional socio-economies. To establish new diversified activities, cooperation between rural residents is essential. Social capital (SC) is an important community factor that facilitates collective community action. The area analyzed in this study is the Awa area, where various kinds of agro-related activities have emerged, including rural-urban exchanges and agro-tourism. Traditional customs are also preserved in the area. We conducted both community and household-level surveys to collect data and investigate the general characteristics of the study area. Various agribusiness activities have been established in the study area. Diversification of rural economy provides opportunities for a variety of rural residents to participate in agribusiness activities and contribute to the sustainable development of both household and rural economies. Our results indicate that various group activities at the local level support the process of rural diversification. Continuity of group activities has led to the accumulation of structural SC. SC provides the potential for activating community activities such as new agribusiness and has contributed indirectly to diversified rural development in the study area. High levels of the accumulation of cognitive SC are also observed, but we are unable to accurately evaluate the impact of cognitive SC on rural diversification in the study area.
Effect of Twenty Days of Vitamin C Supplementation on the Physical Performance of High-Level Male Taekwonders
Creators: name: Gasmi, Amin
Publisher: name: figshare
Year: 2020
Subjects: subject: 111101 Clinical and Sports Nutrition
subject: FOS: Health sciences
subject: 110699 Human Movement and Sports Science not elsewhere classified
subject: 110604 Sports Medicine
subject: 110602 Exercise Physiology
subject: 111103 Nutritional Physiology
subject: 111199 Nutrition and Dietetics not elsewhere classified

description: Cette étude effectuée sur vingt quatre taekwondistes Algériens de haut niveau de catégorie senior garçons montre l’effet d’une cure de supplémentation orale de 4 g par jour en vitamine C en quatre prises de 1 g chacune la première à 8 heure avant le petit déjeuner, la deuxième à 10:30, la troisième avant le déjeuner et la quatrième à 15 heure. L’échantillon a été divisé en deux groupes l’un expérimental qui a reçu la supplémentation, l’autre témoin qui n’a reçu qu’une substance placebo. A partir de Jβ1, nous avons procédé à une batterie de tests qui consistait en des tests d’effort maximal, de force maximale, de vélocité maximale et d’endurance physique dont la durée totale était de quatre jours. Ces tests ont été répartie sur une période s’étalant sur trois mois depuis l’arrêt de la supplémentation р raison d’une batterie de test tout les vingt six jours. Un test de départ a aussi été effectué cinq jours avant le début de la supplémentation. Nous avons aussi effectué une évaluation de la fréquence des blessures traumatiques chez les deux groupes. Les résultats de cette étude montraient une amélioration significative de la force maximale, de l’effort maximal, de la vélocité maximale et de l’endurance spécifique. Alors que, nous n’avons observé aucune amélioration en ce qui concerne l’endurance générale et la capacité de récupération. La fréquence des blessures était moins importante chez les taekwondistes du groupe témoin que ceux du groupe expérimental. Nous pouvons donc conclure que la vitamine C améliore les qualités anaérobies plus que les qualités aérobies chez les taekwondistes de haut niveau.