cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Primordial Density Perturbation in Effective Loop Quantum Cosmology
Creators: name: Hossain, Golam Mortuza
Publisher: name: arXiv
Year: 2004
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: It is widely believed that quantum field fluctuation in an inflating background creates the primeval seed perturbation which through subsequent evolution leads to the observed large scale structure of the universe. The standard inflationary scenario produces scale invariant power spectrum quite generically but it produces, unless fine tuned, too large amplitude for the primordial density perturbation than observed. Using similar techniques it is shown that loop quantum cosmology induced inflationary scenario can produce scale invariant power spectrum as well as small amplitude for the primordial density perturbation without fine tuning. Further its power spectrum has a qualitatively distinct feature which is in principle falsifiable by observation and can distinguish it from the standard inflationary scenario.
description: 33 pages, revtex4, few typos and a confusing notation changed; several clarifications, references added, to appear in CQG
Plasma 8OHdG levels in T24 and T26 (ng.mL−1) before and after treatment from Physiological and cognitive consequences of a daily 26 h photoperiod in a primate: exploring the underlying mechanisms of the circadian resonance theory
Creators: name: Hozer, Clara
name: Pifferi, Fabien
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Physiology
subject: FOS: Biological sciences
subject: Evolutionary Biology
subject: 170299 Cognitive Science not elsewhere classified
subject: FOS: Psychology

description: Figure S4: Plasma 8OHdG levels in T24 and T26 (ng.mL−1) before and after treatment. No significant difference was observed between both treatments with time.
Fundamental Scale Invariance
Creators: name: Wetterich, C.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We propose fundamental scale invariance as a new theoretical principle beyond renormalizability. Quantum field theories with fundamental scale invariance admit a scale-free formulation of the functional integral and effective action in terms of scale invariant fields. They correspond to exact scaling solutions of functional renormalization flow equations. Such theories are highly predictive since all relevant parameters for deviations from the exact scaling solution vanish. Realistic particle physics and quantum gravity are compatible with this setting. The non-linear restrictions for scaling solutions can explain properties as an asymptotically vanishing cosmological constant or dynamical dark energy that would seem to need fine tuning of parameters from a perturbative viewpoint. As an example we discuss a pregeometry based on a diffeomorphism invariant Yang-Mills theory. It is a candidate for an ultraviolet completion of quantum gravity with a well behaved graviton propagator at short distances.
description: Extended material, more concise discussion, 12 pages
Identification of a complete sample of northern ROSAT All-Sky Survey X-ray sources. VIII. The late-type stellar component
Creators: name: Zickgraf, F. -J.
name: Krautter, J.
name: Reffert, S.
name: Alcala, J. M.
name: Mujica, R.
name: Covino, E.
name: Sterzik, M. F.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present results of an investigation of the X-ray properties, age distribution, and kinematical characteristics of a high-galactic latitude sample of late-type field stars selected from the ROSAT All-Sky Survey (RASS). The sample comprises 254 RASS sources with optical counterparts of spectral types F to M distributed over six study areas located at |b| >= 20 degr, and DEC >= -9 degr. A detailed study was carried out for the subsample of ~200 G, K, and M stars. Lithium abundances were determined for 179 G-M stars. Radial velocities were measured for most of the 141 G and K type stars of the sample. Combined with proper motions these data were used to study the age distribution and the kinematical properties of the sample. Based on the lithium abundances half of the G-K stars were found to be younger than the Hyades (660 Myr). About 25% are comparable in age to the Pleiades (100 Myr). A small subsample of 10 stars is younger than the Pleiades. They are therefore most likely pre-main sequence stars. Kinematically the PMS and Pleiades-type stars appear to form a group with space velocities close to the Castor moving group but clearly distinct from the Local Association.
description: accepted for publication in Astronomy & Astrophysics
A HAZAI AGRÁRINNOVÁCIÓ LEHETŐSÉGEI ÉS FELADATAI
Creators: name: Husti, Istvan
name: Husti, Istvan
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agribusiness
subject: Research and Development/Tech Change/Emerging Technologies
subject: kkv szektor
subject: innovációs lehetőség
subject: adaptáció
subject: small and medium size enterprises
subject: possibility for innovation
subject: adaptation

description: Az előadás legfőbb célja: a hazai agrárinnovációs teendők rendszerbe foglalása a jelenlegi lehetőségek és feltételek bázisán, kiemelten a kis- és közép- vállalkozásokra (kkv-ra). Az előadás keretében három modell kerül bemutatásra: - Az agrárinnováció általános modellje világosan megmutatja a részfolyamatokat és a közöttük lévő kapcsolódásokat. A részfeladatokat két integráló ernyő fogja rendszerbe, ezek: a marketing és a tudás. - A mezőgazdasági műszaki fejlesztés modellje, amely sajátos híd-szerepet tölt be a termelés és a megelőző innovációs fázisok között, különböző tényezők egyidejű integrálása révén. - Az adaptív innováció modellje, amelyből kiderülnek a kis- és középvállalkozások fejlesztésének sajátos lehetőségei és feladatai.
description: The main objective of this presentation is to systemise the present innovation tasks of the Hungarian agriculture, especially focusing on the SMS’s. I prepared and use some models to determine the development tasks. Let me introduce three models out of them. • The general model of agricultural innovation demonstrates clearly the connecting and depending works to do. It shows that the innovation part-works can be systematised into two integrating umbrellas. These are marketing and knowledge. • The model about the substance of technical development shows that technical development serving agricultural production has got a particular bridging role between the production and the previous innovation phases by integrating several factors at the same time. • The model of adaptive innovation shows the special possibilities and tasks for developing of the small and medium size enterprises (SMS’s).
New data for the definition of neutron beams for Boron Neutron Capture Therapy
Creators: name: Macías, M.
name: Fernández, B.
name: Praena, J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Nuclear Experiment (nucl-ex)
subject: Applied Physics (physics.app-ph)
subject: Medical Physics (physics.med-ph)
subject: FOS: Physical sciences

description: Boron Neutron Capture Therapy (BNCT) is a neutron radiotherapy used to treat tumours cells previously doping with Boron-10. This therapy requires an epithermal neutron beam for the treatment of deep tumours and a thermal beam for shallow ones. Thanks to recent high-current commercial accelerators, Accelerator-Based Neutron Sources (ABNS) are competitive option for providing therapeutic neutron beams in hospitals. In this work, the neutron field generated by the $^7$Li(p,n)$^7$Be reaction at $1950~$keV is studied as neutron source in ABNS, being measured by the Time-Of-Flight (TOF) technique at HiSPANoS facility (Spain). Moreover, two Beam Shaping Assemblies (BSA) for deep and shallow tumour treatment, which are specially designed for the $1950~$keV neutron field, are evaluated for BNCT via Monte Carlo simulations (MCNP). Results in agreement with the International Atomic Energy Agency (IAEA) figures of merit endorse the use of this neutron field for BNCT.
Complexity and Non-Commutativity of Learning Operations on Graphs
Creators: name: Atmanspacher, H.
name: Filk, T.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We present results from numerical studies of supervised learning operations in recurrent networks considered as graphs, leading from a given set of input conditions to predetermined outputs. Graphs that have optimized their output for particular inputs with respect to predetermined outputs are asymptotically stable and can be characterized by attractors which form a representation space for an associative multiplicative structure of input operations. As the mapping from a series of inputs onto a series of such attractors generally depends on the sequence of inputs, this structure is generally non-commutative. Moreover, the size of the set of attractors, indicating the complexity of learning, is found to behave non-monotonically as learning proceeds. A tentative relation between this complexity and the notion of pragmatic information is indicated.
description: 18 pages, 6 figures, 5 tables, submitted for publication in BioSystems
Representative double-plot temperature diagrams in T24 and T26. from Physiological and cognitive consequences of a daily 26 h photoperiod in a primate: exploring the underlying mechanisms of the circadian resonance theory
Creators: name: Hozer, Clara
name: Pifferi, Fabien
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Physiology
subject: FOS: Biological sciences
subject: Evolutionary Biology
subject: 170299 Cognitive Science not elsewhere classified
subject: FOS: Psychology

description: Figure S1: Representative double-plot temperature diagrams of individuals of each photoperiodic treatment during the first 20 days of experiment. Before treatment, all individuals were living under light-dark cycles of 24h with 14h of light and 10h of dark (L:D 14:10). The different treatments started on the 6th day of recording. A: T24 group. Mouse lemurs were kept under L:D 14:10. B: T26 group. Mouse lemurs were kept under light-dark cycles of 26h (L:D 15:11).
Enforcement Aspects of Conservation Policies: Compensation Payments versus Reserves
Creators: name: Rousseau, Sandra
name: Rousseau, Sandra
Publisher: name: Unknown
Year: 2008
Subjects: subject: Environmental Economics and Policy
subject: Monitoring and enforcement
subject: Policy instruments
subject: Conservation policy

description: This model explicitly incorporates the dynamic aspects of conservation programs with incomplete compliance and it allows landholders’ behaviour to change over time. We find that incomplete and instrument-specific enforcement can have a significant impact on the choice between subsidy schemes and reserves for conservation policies. The results suggest that it is useless to design a conservation scheme for landholders if the regulator is not prepared to explicitly back the program with a monitoring and enforcement policy. In general, the regulator will prefer to use compensation payments, if the cost of using government revenues is sufficiently low, the environmental benefits are equal, and the cost efficiency benefits exceed the (possible) increase in inspection costs. If the use of government funds is too costly, the reserve-type instruments will be socially beneficial.
Frequency enhancement and power tunability in tilted polarizer spin-torque nano oscillator
Creators: name: Arun, R.
name: Gopal, 1 R.
name: Chandrasekar, V. K.
name: Lakshmanan, M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: In the absence of an applied magnetic field, a spin-torque nano oscillator(STNO) with a tilted polarizer is studied using numerical simulation of the associated Landau-Lifshitz-Gilbert-Slonczewski equation. We find considerable enhancement of frequency by tilting the polarizer out-of-plane appropriately. Also, we observe improved tunability of frequency of oscillations from 15 GHz to 75 GHz and increment in the power spectral density by current and tilt angle. In addition, our findings and insights pave a simple way for nanoscale level microwave generators to be implemented.
description: 12 pages,7 figures, Accepted for publication in Journal of Applied Physics
Neue soghdusch-nestorianische Bruchstücke
Creators: name: Baumstark, Anton
Publisher: name: Oriens christianus : Hefte für die Kunde des christlichen Orients
Year: 2024

description: Oriens christianus : Hefte für die Kunde des christlichen Orients, Bd. 12 Nr. 1 (1915): Oriens christianus, Band 12, Heft 1
Entrepreneurial Proclivity and the Performance of Farms: The Cases of Dutch and Slovenian Farmers
Creators: name: Verhees, Frans J.H.M.
name: Klopcic, Marija
name: Kuipers, Abele
name: Verhees, Frans J.H.M.
name: Klopcic, Marija
name: Kuipers, Abele
Publisher: name: Unknown
Year: 2008
Subjects: subject: Productivity Analysis
subject: Entrepreneurship
subject: innovativeness
subject: proactiveness

description: Farms are advised to be entrepreneurial, but empirical research showing that an entrepreneurial proclivity (EP) of farmers results in better performance is scant. This research will test empirically whether an EP contributes to the performance of farms. We provide a model with hypotheses about the relationship between EP and performance, which is tested for a sample of Dutch and Slovenian farmers. We find that EP has a universal positive influence on performance and performance expectations of farmers in The Netherlands and in Slovenia. The influence of the underlying dimension of EP, i.e. innovativeness, proactiveness and risk taking, on performance are mixed and context specific.
SDSS-IV MaNGA: spatially resolved dust attenuation in spiral galaxies
Creators: name: Greener, Michael J.
name: Aragón-Salamanca, Alfonso
name: Merrifield, Michael R.
name: Peterken, Thomas G.
name: Fraser-McKelvie, Amelia
name: Masters, Karen L.
name: Krawczyk, Coleman M.
name: Boardman, Nicholas F.
name: Boquien, Médéric
name: Andrews, Brett H.
name: Brinkmann, Jonathan
name: Drory, Niv
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Dust attenuation in star-forming spiral galaxies affects stars and gas in different ways due to local variations in dust geometry. We present spatially resolved measurements of dust attenuation for a sample of 232 such star-forming spiral galaxies, derived from spectra acquired by the SDSS-IV MaNGA survey. The dust attenuation affecting the stellar populations of these galaxies (obtained using full spectrum stellar population fitting methods) is compared with the dust attenuation in the gas (derived from the Balmer decrement). Both of these attenuation measures increase for local regions of galaxies with higher star formation rates; the dust attenuation affecting the stellar populations increases more so than the dust attenuation in the gas, causing the ratio of the dust attenuation affecting the stellar populations to the dust attenuation in the gas to decrease for local regions of galaxies with higher star formation rate densities. No systematic difference is discernible in any of these dust attenuation quantities between the spiral arm and inter-arm regions of the galaxies. While both the dust attenuation in the gas and the dust attenuation affecting the stellar populations decrease with galactocentric radius, the ratio of the two quantities does not vary with radius. This ratio does, however, decrease systematically as the stellar mass of the galaxy increases. Analysis of the radial profiles of the two dust attenuation measures suggests that there is a disproportionately high concentration of birth clouds (incorporating gas, young stars and clumpy dust) nearer to the centres of star-forming spiral galaxies.
description: 17 pages, 8 figures, accepted for publication in Monthly Notices of the Royal Astronomical Society
Theoretical study on spectral differences of polypeptides constituted by L- and D-amino acids
Creators: name: Zheng, Ren-Hui
name: Wei, Wen-Mei
name: Liu, Yan-Ying
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biotechnology
subject: Evolutionary Biology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Inorganic Chemistry

description: Amino acids, polypeptides and proteins, which are all chiral, are the most important living substances. Most living organisms are made up of L-amino acids. Chirality is of great significance in exploring biomolecules. Studying polypeptides with a large number of atoms is a great challenge for quantum chemistry calculation. We conduct structural studies and perform vibrational and electronic spectra investigations on two polypeptides consisting of 14 L- and D-amino acids, both of which are right-handed α-helical. We find that the two polypeptides have similar IR and Raman vibrational spectra except that the polypeptide constituted by D-amino acids has an intramolecular hydrogen bond peak, but their chiral and excited state spectra are different and the chiral spectra are not mirror symmetric, which can be applied to distinguish them and shows that they have different structures in detail. Thus they may have different properties and functions. In addition, the amide III vibrations of the polypeptide include the information of the backbone and side chains. Therefore, care should be taken to apply the amide III vibrations to determine the secondary structure of polypeptide.
Magnetic well and Mercier stability of stellarators near the magnetic axis
Creators: name: Landreman, Matt
name: Jorge, Rogerio
Publisher: name: arXiv
Year: 2020
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: We have recently demonstrated that by expanding in small distance from the magnetic axis compared to the major radius, stellarator shapes with low neoclassical transport can be generated efficiently. To extend the utility of this new design approach, here we evaluate measures of magnetohydrodynamic interchange stability within the same expansion. In particular, we evaluate magnetic well, Mercier's criterion, and resistive interchange stability near a magnetic axis of arbitrary shape. In contrast to previous work on interchange stability near the magnetic axis, which used an expansion of the flux coordinates, here we use the inverse expansion in which the flux coordinates are the independent variables. Reduced expressions are presented for the magnetic well and stability criterion in the case of quasisymmetry. The analytic results are shown to agree with calculations from the VMEC equilibrium code. Finally, we show that near the axis, Glasser, Greene, & Johnson's stability criterion for resistive modes approximately coincides with Mercier's ideal condition.
All the distant horizon edges of a terrain
Creators: name: Archambault, Daniel
Publisher: name: University of British Columbia
Year: 2009

description: Terrains used in Geographic Information Systems (GIS) in some applications require a large number of points to express a fine level of detail over a large area. At distant viewpoints, this fine level of detail is often not visually important. It therefore makes sense to coarsen the level of detail in order to reduce rendering costs. There is some evidence that if models are constrained to preserve silhouettes, then coarser meshes can be used with little loss in visual quality. The purpose of this thesis is to describe an algorithm that determines the set of edges of a polyhedral terrain that lie on some horizon for some distant view of the model. The algorithm computes this by maintaining the two-dimensional visual hull developed by Laurentini [30] of the intersection of the terrain with a horizontal plane sweeping from highest to lowest altitude. Changes in the structure of the visual hull delimit changes in the horizon. All such changes can be detected by using tools developed for kinetic visibility.
All parameters during resting and active phases before and after treatment. from Physiological and cognitive consequences of a daily 26 h photoperiod in a primate: exploring the underlying mechanisms of the circadian resonance theory
Creators: name: Hozer, Clara
name: Pifferi, Fabien
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Physiology
subject: FOS: Biological sciences
subject: Evolutionary Biology
subject: 170299 Cognitive Science not elsewhere classified
subject: FOS: Psychology

description: Table S1: Body mass, oxidative stress and energy parameters, body temperature and locomotor activity during resting and active phases before and after treatment. a.u. = arbitrary unit.
Magnetic, transport, and thermal properties of $δ$-phase UZr$_2$
Creators: name: Ding, Xiaxin
name: Yao, Tiankai
name: Fu, Lyuwen
name: Hua, Zilong
name: Harp, Jason
name: Marianetti, Chris
name: Neupane, Madhab
name: Manley, Michael E.
name: Hurley, David
name: Gofryk, Krzysztof
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: Alloys of hexagonal $δ$-phase UZr$_2$ have been synthesized and studied by means of heat capacity, magnetic susceptibility, magnetization, electrical resistivity, magnetoresistance, thermoelectric power, thermal conductivity measurements, for the first time, at temperatures from 1.8 to 300 K and in magnetic fields up to 8 T. The weak temperature dependence of the magnetic susceptibility and the small value of both Seebeck (0.75 $μ$V/K at room temperature) and of the Sommerfeld coefficient (13.5 mJ mol$^{-1}$ K$^{-2}$) point to 5$f$-electrons in this material having a delocalized nature. The electrical resistivity and magnetoresistance indicate the presence of significant electronic disorder in $δ$-UZr$_2$, consistent with the disorder in its crystal structure. Density functional theory calculations have been performed and compared to experimental results.
description: Accepted by Philosophical Magazine Letters
European food quality policy: the importance of geographical indications, organic certification and food quality insurance schemes in European countries
Creators: name: Becker, Tilman C.
name: Staus, Alexander
name: Becker, Tilman C.
name: Staus, Alexander
Publisher: name: Unknown
Year: 2008
Subjects: subject: Agricultural and Food Policy
subject: Food Consumption/Nutrition/Food Safety
subject: food quality policy
subject: protected geographical indications
subject: organic certification
subject: quality assurance schemes
subject: Europe
subject: cluster
subject: PDO
subject: PGI
subject: TSG

description: The protection of geographical indications, organic certification and food quality assurance schemes are the cornerstones of European food quality policy. In this paper the importance of these voluntary quality policy schemes in the different Member States of the European Union is investigated. Member States may be grouped into four cluster according to the food quality orientation.
Simulations of lattice animals and trees
Creators: name: Hsu, Hsiao-Ping
name: Nadler, Walter
name: Grassberger, Peter
Publisher: name: arXiv
Year: 2004
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The scaling behaviour of randomly branched polymers in a good solvent is studied in two to nine dimensions, using as microscopic models lattice animals and lattice trees on simple hypercubic lattices. As a stochastic sampling method we use a biased sequential sampling algorithm with re-sampling, similar to the pruned-enriched Rosenbluth method (PERM) used extensively for linear polymers. Essentially we start simulating percolation clusters (either site or bond), re-weigh them according to the animal (tree) ensemble, and prune or branch the further growth according to a heuristic fitness function. In contrast to previous applications of PERM, this fitness function is {\it not} the weight with which the actual configuration would contribute to the partition sum, but is closely related to it. We obtain high statistics of animals with up to several thousand sites in all dimension 2 <= d <= 9. In addition to the partition sum (number of different animals) we estimate gyration radii and numbers of perimeter sites. In all dimensions we verify the Parisi-Sourlas prediction, and we verify all exactly known critical exponents in dimensions 2, 3, 4, and >= 8. In addition, we present the hitherto most precise estimates for growth constants in d >= 3. For clusters with one site attached to an attractive surface, we verify the superuniversality of the cross-over exponent at the adsorption transition predicted by Janssen and Lyssy. Finally, we discuss the collapse of animals and trees, arguing that our present version of the algorithm is also efficient for some of the models studied in this context, but showing that it is {\it not} very efficient for the `classical' model for collapsing animals.
description: 17 pages RevTeX, 29 figures included
Detection of CNX cyanogen halides (X = F, Cl) on metal-free defective phosphorene sensor: periodic DFT calculations
Creators: name: Ghadiri, Mahdi
name: Ghambarian, Mehdi
name: Ghashghaee, Mohammad
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Cell Biology
subject: Molecular Biology
subject: Physiology
subject: FOS: Biological sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Computational Biology

description: Great research interest in the novel P-based nanosensors has been spurred by the arrival of black phosphorus monolayer devices in recent years. The paper investigates the detection capabilities of defective phosphorene (DP) toward the sensing of cyanogen fluoride and chloride molecules using periodic density functional theory. As found from the optimizations, the analyte stabilisation in the lowest-energy configuration is non-linear with the molecule interacting through the nitrogen head. The fluoride molecule released 2.5 times higher energy (–15.63 kcal/mol at HSE06/TZVP) than the chloride counterpart upon the adsorption on the surface. Significant changes were seen in both spin gaps of DP with sensing, particularly in the case of CNCl. The sensitivity and air selectivity for the system under consideration amounted to 9.9 and 50.4, respectively. Overall, the findings reported herein confirmed that the defective phosphorene (DP) sensor can be used for cyanogen halides detection, with the recovery time of up to 290.0 ms at 298 K.
Kasner generalization of Levi-Civita spacetime
Creators: name: Delice, Ozgur
Publisher: name: arXiv
Year: 2004
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We investigate some cylindrically symmetric nonstationary and nonstatic solutions of Einstein field equations. We first study some physical properties of a solution which can be considered as Kasner generalization of static Levi-Civita vacuum solution. Then we generalize this metric to include a solution where a space-time filled with null dust or a stiff fluid.
description: 17 pages, 1 figure, latex; Combined with gr-qc/0501107 which i have withdrawn, a stiff fluid solution and references are added
Environmental regulation and horizontal mergers in the eco-industry
Creators: name: Canton, Joan
name: David, Maia
name: Sinclair-Desgagne, Bernard
name: Canton, Joan
name: David, Maia
name: Sinclair-Desgagne, Bernard
Publisher: name: Unknown
Year: 2008
Subjects: subject: Environmental Economics and Policy
subject: Industrial Organization
subject: Eco-industry
subject: environmental policy
subject: horizontal mergers

description: This paper considers the environmental policy and welfare implications of a merger between environment firms (i.e., firms managing environmental resources or supplying pollution abatement goods and services). The traditional analysis of mergers in Cournot oligopolies is extended in two ways. First, we show how environmental policy affects the incentives of environment firms to merge. Second, we stress that mergers in the eco-industry impact welfare beyond what is observed in other sectors, due to an extra effect on pollution abatement efforts; this might lead to disagreements between an anti-trust agency seeking to limit market concentration which can be detrimental to consumer surplus and a benevolent regulator who maximizes total welfare.
Emergency Exploratory Laparotomy For Midgut Volvulus With Intestinal Malrotation In Neonates Under Thoracic Segmental Spinal Anesthesia.
Creators: name: Pinal Vasani
name: Rajesh Shah
name: Dharmishthaben Chakarani
name: Mrunal Shah
name: Keyur Ranpariya
name: Dev Thakore
Publisher: name: Zenodo
Year: 2024
Subjects: Emergency Exploratory laparotomy
Midgut Volvulus
Intestinal Malrotation
Neonates
Thoracic Segmental Spinal Anesthesia

description: Introduction:

Malrotation of the intestines is a developmental abnormality that permits spontaneous abnormal rotation of the midgut around the mesentery which present with intestinal obstruction. The most serious complication of malrotation is midgut volvulus can rapidly compromise the intestinal blood supply causing infarction. Thoracic segmental spinal anesthesia has been demonstrated as a safe and effective method and has been shown as beneficial in maintaining hemodynamic stability for these patients and reducing side effects encountered with general anesthesia.

Case History:

A case of 6 days old male baby, 2 kg by weight, presented a UNM children hospital with chief complaint of distended abdomen with bilious vomiting after every feed, unable to pass stool since birth. Preoperative work up and abdomen USG was done which suggest midgut volvulus with intestinal obstruction, severe dehydration with pre-renal failure. Preoperative resuscitation was done in NICU. Preoperative anesthetic checkup was done and planned for the emergency exploratory laparotomy under thoracic segmental spinal anesthesia. Patient was given Inj. Ketamine for sedation. Under aseptic precaution, thoracic segmental spinal anesthesia with isobaric Inj. Levobupivacaine with additive inj. Dexmedetomidine was given. O2 via facemask was given and patient was hemodynamically stable throughout the procedure and postoperatively.

Conclusion:Midgut volvulus is a true surgical emergency. Surgery is only definitive treatment of malrotation and midgut volvulus. Thoracic segmental spinal anesthesia as a newer modality of induction is safe for major abdominal surgeries like exploratory laparotomy as it is associated with decrease perioperative opioid requirement, early recovery of bowel function, comparatively less post-operative respiratory complications which result in shorter length of hospital stay.
Non-adiabatic coupling as a frictional force in (He, H, H)+ dynamics and the formation of HeH2+
Creators: name: Satyam Ravi
name: Soumya Mukherjee
name: Bijit Mukherjee
name: Satrajit Adhikari
name: Narayanasami Sathyamurthy
name: Baer, Michael
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Cell Biology
subject: Neuroscience
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: It is shown that the Born–Oppenheimer–Huang non-adiabatic coupling terms (NACTs) in a molecular Hamiltonian can be considered as equivalent to a friction force in classical mechanics and consequently responsible for the formation of triatomic species like HeH2+. The classical equation of motion is solved accordingly for a test case of a helium atom approaching an H2+ molecule at its potential minimum along the collinear axis and lines parallel to it and also for the C2v geometry. It is shown that the singular NACTs between the first two excited states slow down the motion of the three quasi-ions (He, H, H)+ while approaching each other and result in substantial loss of kinetic energy in the collision process. These results have profound implications for the formation of di- and triatomic species in the early universe, during the chemical synthesis epoch following the nucleosynthesis that followed the Big Bang.
Multifluid Modelling of Relativistic Radiation Hydrodynamics
Creators: name: Gavassino, Lorenzo
name: Antonelli, Marco
name: Haskell, Brynmor
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The formulation of a universal theory for bulk viscosity and heat conduction represents a theoretical challenge for our understanding of relativistic fluid dynamics. Recently, it has been shown that the multifluid variational approach championed by Carter and collaborators has the potential to be a general and natural framework to derive (hyperbolic) hydrodynamic equations for relativistic dissipative systems. Furthermore, it also allows to keep direct contact with non-equilibrium thermodynamics, providing a clear microscopic interpretation of the elements of the theory. To provide an example of its universal applicability, in this paper we derive the fundamental equations of the radiation hydrodynamics directly in the context of Carter's multifluid theory. This operation unveils a novel set of thermodynamic constraints that must be respected by any microscopic model. Then, we prove that the radiation hydrodynamics becomes a multifluid model for bulk viscosity or heat conduction in some appropriate physical limits.
description: 19 pages, 0 figures, published on Symmetry
MPEC 2024-A151 : DAILY ORBIT UPDATE (2024 January 13)
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Exploring Japanese olive oil consumer behavior
Creators: name: Mtimet, Nadhem
name: Kashiwagi, Kenichi
name: Zaibet, Lokman
name: Masakazu, N.
name: Mtimet, Nadhem
name: Kashiwagi, Kenichi
name: Zaibet, Lokman
name: Masakazu, N.
Publisher: name: Unknown
Year: 2008
Subjects: subject: Consumer/Household Economics
subject: Olive oil
subject: Japan
subject: consumer behavior

description: During the last two decades, olive oil consumption in Japan is showing an increasing trend due to dietary and health concerns. Traditional olive oil producer and exporter countries such as Italy, Spain and Tunisia have interest to reinforce and to increase their penetration in the Japanese market. This study examines Japanese olive oil consumer behaviour by the use of the conjoint analysis technique. Five attributes have been chosen to design the experiment: region of origin, price, olive oil type, taste and colour. Two models have been estimated where the price variable was introduced in its discrete form in the first model and in its linear and quadratic from in the second model. In a second step, consumer segmentation was undertaken based on consumption frequencies. Two groups have been identified: “heavy consumers” and “light or potential consumers”. The main results indicate the importance of the selected variables in Japanese olive oil consumer' choice. Olive oil with Mediterranean or Tunisian origin has higher probabilities to be chosen than Italian or Spanish one. Japanese consumers prefer a green with bland taste olive oil. Concerning olive oil type, results indicate that refined olive oil has more probability to be chosen than virgin or extra-virgin one, indicating low awareness of Japanese consumers about olive oil. The price variable estimates have shown a convex utility curve indicating a decrease of consumers’ utility when price increases till a maximum price. Above that price, consumers’ utility increase indicating in that case that olive oil is considered as a luxurious product. Differences as well as similarities have been detected among consumer segments.
On Sudakov and Soft resummations in QCD
Creators: name: Ravindran, V.
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: In this article we extract soft distribution functions for Drell-Yan and Higgs production processes using mass factorisation theorem and the perturbative results that are known upto three loop level. We find that they are maximally non-abelien. We show that these functions satisfy Sudakov type integro differential equations. The formal solutions to such equations and also to the mass factorisation kernel upto four loop level are presented. Using the soft distribution function extracted from Drell-Yan production, we show how the soft plus virtual cross section for the Higgs production can be obtained. We determine the threshold resummation exponents upto three loop using the soft distribution function.
description: 22 pages, no figures. Discussion on soft plus virtual part of Higgs production and DIS added
Factor Content of Agricultural Trade
Creators: name: Kancs, D'Artis
name: Ciaian, Pavel
name: Kancs, D'Artis
name: Ciaian, Pavel
Publisher: name: Unknown
Year: 2008
Subjects: subject: International Relations/Trade
subject: Factor content
subject: Heckscher-Ohlin
subject: Factor abundance
subject: Agricultural trade

description: The paper studies the factor content of agricultural trade in the EU. We examine the relative abundance for labour, capital and land in old and new EU member states, and test the Hechscher-Ohlin (HO) hypothesis in two different settings: the standard and a more general. Our empirical findings suggest that the HO model performs better in the developed market economy trade than in the CEE transition country trade. The relative factor price distortions during the central planning period might be responsible for this. Second, we find that the HO model performs considerable better when relaxing the factor price equalisation between countries. These findings support the more general versions of the HO model.
description: Replaced with revised version of paper 08/25/09.
Table 1 References from Body shape diversification along the benthic–pelagic axis in marine fishes
Creators: name: S. T. Friedman
name: S. A. Price
name: K. A. Corn
name: O. Larouche
name: C. M. Martinez
name: P. C. Wainwright
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Ecology

description: Colonization of novel habitats can result in marked phenotypic responses to the new environment that include changes in body shape and opportunities for further morphological diversification. Fishes have repeatedly transitioned along the benthic–pelagic axis, with varying degrees of association with the substrate. Previous work focusing on individual lineages shows that these transitions are accompanied by highly predictable changes in body form. Here, we generalize expectations drawn from this literature to study the effects of habitat on body shape diversification across 3344 marine teleost fishes. We compare rates and patterns of evolution in eight linear measurements of body shape among fishes that live in pelagic, demersal and benthic habitats. While average body shape differs between habitats, these differences are subtle compared to the high diversity of shapes found within each habitat. Benthic living increases the rate of body shape evolution and has led to numerous lineages evolving extreme body shapes, including both exceptionally wide bodies and highly elongate, eel-like forms. By contrast, we find that benthic living is associated with the slowest diversification of structures associated with feeding. Though we find that habitat can serve as an impetus for predictable trait changes, we also highlight the diversity of responses in marine teleosts to opportunities presented by major habitats.
Screening of nuclear pairing in nuclear and neutron matter
Creators: name: Shen, Caiwan
name: Lombardo, Umberto
name: Schuck, Peter
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The screening potential in the $^1S_0$ and $^3S_1$ pairing channels in neutron and nuclear matter in different approximations is discussed. It is found that the vertex corrections to the potential are much stronger in nuclear matter than in neutron matter.
description: 11 pages, 8 figures, revtex4 style
Controlling collective synchrony in oscillatory ensembles by precisely timed pulses
Creators: name: Rosenblum, Michael
Publisher: name: arXiv
Year: 2020
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Physical sciences

description: We present an efficient technique for control of synchrony in a globally coupled ensemble by pulsatile action. We assume that we can observe the collective oscillation and can stimulate all elements of the ensemble simultaneously. We pay special attention to the minimization of intervention into the system. The key idea is to stimulate only at the most sensitive phase. To find this phase we implement an adaptive feedback control. Estimating the instantaneous phase of the collective mode on the fly, we achieve efficient suppression using a few pulses per oscillatory cycle. We discuss the possible relevance of the results for neuroscience, namely for the development of advanced algorithms for deep brain stimulation, a medical technique used to treat Parkinson's disease.
description: 9 pages, 11 figures
AMR, stability and higher accuracy
Creators: name: Lehner, Luis
name: Liebling, Steven L.
name: Reula, Oscar
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Efforts to achieve better accuracy in numerical relativity have so far focused either on implementing second order accurate adaptive mesh refinement or on defining higher order accurate differences and update schemes. Here, we argue for the combination, that is a higher order accurate adaptive scheme. This combines the power that adaptive gridding techniques provide to resolve fine scales (in addition to a more efficient use of resources) together with the higher accuracy furnished by higher order schemes when the solution is adequately resolved. To define a convenient higher order adaptive mesh refinement scheme, we discuss a few different modifications of the standard, second order accurate approach of Berger and Oliger. Applying each of these methods to a simple model problem, we find these options have unstable modes. However, a novel approach to dealing with the grid boundaries introduced by the adaptivity appears stable and quite promising for the use of high order operators within an adaptive framework.
Agricultural and Economic Convergence in the EU Integration Process: Do Geographical Relationships Matter?
Creators: name: Sassi, Maria
name: Pecci, Francesco
name: Sassi, Maria
name: Pecci, Francesco
Publisher: name: Unknown
Year: 2008
Subjects: subject: International Relations/Trade
subject: Regional convergence
subject: Spatial analysis
subject: GWR approach

description: In the light of the reaffirmed importance of agricultural convergence within the integration process, the paper provides a preliminary investigation of the impact of the enlargement from the EU-15 to the EU-27 on agricultural real b-convergence and, with reference to the EU-27, of its relationship with economic catching-up process. The empirical analysis, based on a GWR approach, takes into account the regional spatial interdependences in estimating local parameters of convergence. The approach adopted allows to overcome the contradictory results from OLS estimations and parametric spatial econometric models pointed out by the literature and primarily connected to the existence of no unique convergence rate all over Europe. The analysis is based on a sample of 259 EU-27 regions at NUTS 2 level and is referred to the time period from 1991-2007.
The gas-phase pyrolysis of cyclopropylamine. Quantum chemical characterisation of the intermediates involved
Creators: name: Yeljair Monascal
name: Badenes, María Paula
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Marine Biology
subject: Cancer

description: A computational study on the molecular structure, harmonic vibrational frequencies and thermochemical parameters of the postulated intermediates and final products involved in the gas-phase pyrolysis of (c-C3H5)NH2 (CPA) has been carried out by ab-initio and DFT methods. Internal rotor potentials were determined employing CAS-MP2 calculations for the singlet ĊH2CH2ĊHNH2 biradical and DFT for singlet CH3CH2C̈NH2, cis- and trans-CH3CH=CHNH2, E- and Z-CH3CH2CH=NH, (c-C3H5)NHCH(NH2)CH2CH3, E- and Z-(c-C3H5)N=CHCH2CH3. The enthalpies of formation at 0 and 298 K for these species were derived from isodesmic reactions using the B3LYP and M06-2X functionals coupled to the 6-311++G(3df,3pd) basis set and ab-initio G3(MP2) and G3(MP2)//B3LYP/6-311++G(3df,3pd) composite models. At the last level, enthalpies of formation at 298 K of 69.94 and 40.37 kcal mol−1 were estimated for the first time for ĊH2CH2ĊHNH2 and CH3CH2C̈NH2, and values of 7.28, 8.12, 5.37 and 6.08 kcal mol−1 were derived for cis-CH3CH=CHNH2, trans-CH3CH=CHNH2, E-CH3CH2CH=NH and Z-CH3CH2CH=NH, respectively. Accordingly, the pyrolysis of CPA to give ĊH2CH2ĊHNH2 and CH3CH2C̈NH2 is predicted to be endothermic by 51.58 and 22.01 kcal mol−1, whereas all other reaction steps are exothermic. For the overall reaction, 2 CPA → (c-C3H5)N=CHCH2CH3 + NH3, a standard change in enthalpy of about −20 kcal mol−1 was obtained.