cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Quantum corrections to the MSSM h^0 b b-bar vertex: Decoupling limit
Creators: name: Haber, Howard E.
name: Logan, Heather E.
name: Penaranda, Siannah
name: Temes, David
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider the leading one-loop Yukawa-coupling corrections to the h^0 b b-bar coupling at O(m_t^2)in the MSSM in the decoupling limit. The decoupling behavior of the corrections from the various MSSM sectors is analyzed in the case of having some or all of the supersymmetric mass parameters and/or the CP-odd Higgs mass large as compared to the electroweak scale.
description: LaTeX, 5 pages, 4 figures. To appear in the Proceedings of the "7th International Symposium on Radiative Corrections (RADCOR05)", Shonan Village, Japan, 2005
Mission Planner for UAV Battery Replacement
Creators: name: Bouček, Zdeněk
name: Flídr, Miroslav
name: Straka, Ondřej
Publisher: name: arXiv
Year: 2024
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: The paper presents a mission planner for an autonomous unmanned aerial vehicle (UAV) battery management system. The objective of the system is to plan replacements of the UAV's battery on the static battery management stations. The plan ensures that UAVs have sufficient energy to fulfill their long-term mission, which would otherwise be impossible.
 The paper provides a detailed description of the mission planner and all of its components. The functionality of the planner is successfully demonstrated in simulated multi-UAV multi-station scenarios.
description: 6 pages, 6 figures, submitted to MFI 2024 conference
1485: William Arthur Walder
Creators: name: Project Team, Lest We Forget
Publisher: name: University of Oxford
Year: 2024
Subjects: classificationCode: 430304
subject: British history
classificationCode: 430308
subject: European history (excl. British, classical Greek and Roman)
classificationCode: 430316
subject: International history

description: William Walder was born 12 Nov 1879 in Rogate, West Sussex. He served in South Africa with the Hampshire Regiment between the years of 1900 and 1902 before returning to England and marrying Daisy Pratt in August 1903. They had 10 children (4 sons) together over the course of his life.

His service in the First World War is unclear, but it is thought he joined up at some point after 1915 and was sent home with a pension in late 1917. This time he served with the Royal West Kent Regiment on the Western Front. Walder remained a private throughout his time in the army.

Walder came from an agricultural background and worked as a labourer and foreman in the southeast of England (Hermitage, Southbourne, Bognor Regis) after the war, eventually dying in 1952 at St Richard's Hospital, Chichester.

His son served in the Navy during the Second World War.
Lorentzian homogeneous spaces admitting a homogeneous structure of type T1+T3
Creators: name: Meessen, P.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Differential Geometry (math.DG)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 22F30

description: We show that a Lorentzian homogeneous space admitting a homogeneous structure of type T1 + T3 is either a (locally) symmetric space or a singular homogeneous plane wave.
description: 7 pages, Latex2e, a small note and a reference added
906: George Loosley (story)
Creators: name: Project Team, Lest We Forget
Publisher: name: University of Oxford
Year: 2024
Subjects: classificationCode: 430304
subject: British history
classificationCode: 430308
subject: European history (excl. British, classical Greek and Roman)
classificationCode: 430316
subject: International history

description: George Loosley was killed on 21st August 1917 in the battle of Passchendaele. This is his story.
Traceability Adoption at the Farm Level: An Empirical Analysis of the Portuguese Pear Industry
Creators: name: Souza Monteiro, Diogo M.
name: Caswell, Julie A.
name: Souza Monteiro, Diogo M.
name: Caswell, Julie A.
Publisher: name: Unknown
Year: 2006
Subjects: Research and Development/Tech Change/Emerging Technologies

description: Traceability is becoming a condition for doing business in European food markets. Retailers are adopting standards that are more stringent than what is mandatory. An example is EurepGAP, a quality standard for good agricultural practices that includes traceability as a main requirement. We analyze EurepGAP implementation in the Portuguese pear industry and find that implementation cannot be distinguished from sales to British supermarkets. Discrete choice models show the odds of traceability adoption increase with farm size and previous compliance with quality assurance schemes, while farm productivity has a negative impact on the probability of adoption.
Boosting the accuracy of protein secondary structure prediction through nearest neighbor search and method hybridization
Creators: name: SPENCER KRIEGER
name: Kececioglu, John
Publisher: name: F1000 Research Limited
Year: 2020

description: Protein secondary structure prediction is a fundamental precursor to many bioinformatics tasks. Nearly all state-of-the-art tools when computing their secondary structure prediction do not explicitly leverage the vast number of proteins whose structure is known. Leveraging this additional information in a so-called template-based method has the potential to significantly boost prediction accuracy.
We present a new hybrid approach to secondary structure prediction that gains the advantages of both template- and non-template-based methods. Our core template-based method is an algorithmic approach that uses metric-space nearest neighbor search over a template database of fixed-length amino acid words to determine estimated class-membership probabilities for each residue in the protein. These probabilities are then input to a dynamic programming algorithm that finds a physically-valid maximum-likelihood prediction for the entire protein. Our hybrid approach exploits a novel accuracy estimator for our core method, that estimates the unknown true accuracy of its prediction, to discern when to switch between template- and non-template-based methods.
On challenging CASP benchmarks, the resulting hybrid approach boosts the state-of-the-art Q8 accuracy by more than 2-10%, and Q3 accuracy by more than 1-3%, yielding the most accurate method currently available for both 3- and 8-state secondary structure prediction.
Availability: A preliminary implementation in a new tool we call Nnessy is available free for non-commercial use at http://nnessy.cs.arizona.edu.
Benchmarking a $(μ+λ)$ Genetic Algorithm with Configurable Crossover Probability
Creators: name: Ye, Furong
name: Wang, Hao
name: Doerr, Carola
name: Bäck, Thomas
Publisher: name: arXiv
Year: 2020
Subjects: subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Computer and information sciences

description: We investigate a family of $(μ+λ)$ Genetic Algorithms (GAs) which creates offspring either from mutation or by recombining two randomly chosen parents. By scaling the crossover probability, we can thus interpolate from a fully mutation-only algorithm towards a fully crossover-based GA. We analyze, by empirical means, how the performance depends on the interplay of population size and the crossover probability. Our comparison on 25 pseudo-Boolean optimization problems reveals an advantage of crossover-based configurations on several easy optimization tasks, whereas the picture for more complex optimization problems is rather mixed. Moreover, we observe that the ``fast'' mutation scheme with its are power-law distributed mutation strengths outperforms standard bit mutation on complex optimization tasks when it is combined with crossover, but performs worse in the absence of crossover. We then take a closer look at the surprisingly good performance of the crossover-based $(μ+λ)$ GAs on the well-known LeadingOnes benchmark problem. We observe that the optimal crossover probability increases with increasing population size $μ$. At the same time, it decreases with increasing problem dimension, indicating that the advantages of the crossover are not visible in the asymptotic view classically applied in runtime analysis. We therefore argue that a mathematical investigation for fixed dimensions might help us observe effects which are not visible when focusing exclusively on asymptotic performance bounds.
A search for CI J=2--1 emission in IRAS F10214+4724
Creators: name: Papadopoulos, Padeli P.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Sensitive new observations of the fine structure line $^3$P$_2$$\to $ $^3$P$_1$ (J=2--1) of the neutral atomic carbon CI ($ν_{rest}\sim 809$ GHz) in the strongly lensed Ultra Luminous Infrared Galaxy (ULIRG) IRAS F10214+4724 at z=2.3 with the mm/sub-mm telescope James Clerk Maxwel (JCMT) are presented. These do not confirm the presence of emission from this line at the flux levels or angular extent previously reported in the literature. The new 2$σ$ upper limits are: $\rm S_{CI}\la 7 Jy km s^{-1}$ (central position), and $\rm < S_{CI} > \la 8.5 Jy km s^{-1}$ (average over the two $\rm [δ(RA), δ(Dec)]=[0'',\pm 10'']$ positions). A CI emission assumed fully concomitant with the bulk of H$_2$ and confined entirely within the strongly lensed object yields an upper limit of $\rm M_{CI}(H_2)\la 1.5 \times 10^{10} M_{\odot}$, compatible with the reported CO-derived H$_2$ gas mass, within the uncertainties of the two methods. A comparison with the recent detection of the $^3$P$_1$$\to $ $^3$P$_0$ (J=1--0) line in this galaxy by Weiss et al. (2004) is made and the large discrepancy with the previous CI measurements is briefly discussed.
description: 8 pages, 3 figuers, accepted for publication in the Astrophysical Journal
Chiral theory of nucleons and pions in the presence of an external gravitational field
Creators: name: Alharazin, H.
name: Djukanovic, D.
name: Gegelia, J.
name: Polyakov, M. V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We extend the standard second order effective chiral Lagrangian of pions and nucleons by considering the coupling to an external gravitational field. As an application we calculate one-loop corrections to the one-nucleon matrix element of the energy-momentum tensor to fourth order in chiral counting, and next-to-leading order tree-level amplitude of the pion-production in an external gravitational field. We discuss the relation of the obtained results to experimentally measurable observables. Our expressions for the chiral corrections to the nucleon gravitational form factors differ from those in the literature. That might require to revisit the chiral extrapolation of the lattice data on the nucleon gravitational form factors obtained in the past.
description: 11 pages
Science DMZ Networks: How Different are They Really?
Creators: name: Mutter, Emily
name: Shannigrahi, Susmit
Publisher: name: arXiv
Year: 2024
Subjects: subject: Numerical Analysis (math.NA)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: The Science Demilitarized Zone (Science DMZ) is a network environment optimized for scientific applications. A Science DMZ provides an environment mostly free from competing traffic flows and complex security middleware such as firewalls or intrusion detection systems that often impede data transfer performance. The Science DMZ model provides a reference set of network design patterns, tuned hosts and protocol stacks dedicated to large data transfers and streamlined security postures that significantly improve data transfer performance, accelerating scientific collaborations and discovery.
 Over the past decade, many universities and organizations have adopted this model for their research computing. Despite becoming increasingly popular, there is a lack of quantitative studies comparing such a specialized network to conventional production networks regarding network characteristics and data transfer performance. We strive to answer the following research questions in this study: Does a Science DMZ exhibit significantly different behavior than a general-purpose campus network? Does it improve application performance compared to such general-purpose networks? Through a two-year-long quantitative network measurement study, we find that a Science DMZ exhibits lower latency, higher throughput, and lower jitter behaviors. However, we also see several non-intuitive results. For example, a DMZ may take a longer route to external destinations and experience higher latency than the campus network. While the DMZ model benefits researchers, the benefits are not automatic - careful network tuning based on specific use cases is required to realize the full potential of such infrastructure.
Thermodynamics and Null Geodesics of a Schwarzschild Black Hole Surrounded by a Dehnen Type Dark Matter Halo
Creators: name: Gohain, Mrinnoy M.
name: Phukon, Prabwal
name: Bhuyan, Kalyan
Publisher: name: arXiv
Year: 2024
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this work, we derive a novel black hole solution surrounded by a Dehnen-(1,4,0) type dark matter halo by embedding a Schwarzschild black hole within the halo, constituting a composite dark matter-black hole system. The thermodynamics of the resulting effective black hole spacetime is then studied with particular attention to the influence of the dark matter parameters on various thermodynamic properties. We examine the specific heat and free energy to assess the thermodynamic stability of the model. Furthermore, the null geodesics and the effective potential of light rays are studied to investigate how the dark matter parameters affect these geodesics and the radii of circular orbits. The stability of circular null geodesics is analyzed using dynamical systems and Lyapunov exponents, which represents the dynamical behaviour of the circular photon orbits. Finally, we studied if the circular geodesics exhibit chaotic behaviour using the chaos-bound condition.
description: 15 pages, 13 figures. Published version
The responsibility of the U.S. under international law for the legacy of toxic waste at the former U.S. bases in the Philippines
Creators: name: Mercado, Josine Ruth Remorca
Publisher: name: University of British Columbia
Year: 2009

description: In 1992, the Americans completed its withdrawal from the Philippines, ending almost a century of U.S. military presence. However, it was soon discovered that the U.S. left behind several contaminated sites at its former military bases in the Philippines due to inadequate hazardous waste management. It appears that the U.S. Department of Defense failed to implement clear and consistent environmental policies at Clark and Subic. The U.S. maintains that it is under no obligation to undertake further cleanup at its former installations inasmuch as the Philippines has waived its right to do so under the basing agreement. It will be argued that the Philippines made no such waiver under the Manglapus-Schultz Agreement. Thus, the U.S. remains responsible under international law for the resulting environmental damage at its former bases. States have the responsibility under customary international law to ensure that activities within their jurisdiction or control do not cause damage to the environment of other states. A state will be responsible if it breaches this international obligation. It will be argued that the U.S. breached its obligation under international law when activities within its effective control caused significant environmental damage to areas forming part of Philippine territory. Such a breach may also result in the violation of the emerging right to a healthy environment. Existing human rights, such as the right to life and health, right to food and water, right to a safe and healthy working environment and right to information, will be applied from an environmental perspective to determine whether the Filipinos' right to a healthy environment was violated. While a legal claim can be made for the remediation of the environment and compensation of the victims, it will be argued that existing mechanisms for the settlement and adjudication of international claims are inadequate. States are generally reluctant to submit to the jurisdiction of international tribunals and most of these fora do not allow non-state entities to appear before them. Thus, it would be argued that the most promising approach may well be through political and diplomatic means.
On singular effective superpotentials in supersymmetric gauge theories
Creators: name: Argyres, Philip C.
name: Edalati, Mohammad
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study N=1 supersymmetric SU(2) gauge theory in four dimensions with a large number of massless quarks. We argue that effective superpotentials as a function of local gauge-invariant chiral fields should exist for these theories. We show that although the superpotentials are singular, they nevertheless correctly describe the moduli space of vacua, are consistent under RG flow to fewer flavors upon turning on masses, and also reproduce by a tree-level calculation the higher-derivative F-terms calculated by Beasely and Witten (hep-th/0409149) using instanton methods. We note that this phenomenon can also occur in supersymmetric gauge theories in various dimensions.
description: 21 pages, 5 figures; minor errors corrected
THE IMPACT OF TECHNICAL BARRIERS ON US-EU AGRO-FOOD TRADE
Creators: name: Nardella, Michele
name: Boccaletti, Stefano
name: Nardella, Michele
name: Boccaletti, Stefano
Publisher: name: Unknown
Year: 2003
Subjects: International Relations/Trade

description: Controversial aspects exist in the current debate on the application of Non Tariff Measures (NTMs) on agro-food trade. This study intends to offer an evaluation of the trade impact of both non-technical and technical NTMs on the US-EU bilateral trade, the two major players in WTO negotiations. The results show two main structural differences between the EU and US borders: technical NTMs are preferred in the US, while in the EU the opposite is true; agro-food imports in the US face a number of NTMs more than double that of the EU. Gravity model estimates confirm the negative impact of NTMs on trade. However, safety technical requirements seem to have a positive effect on trade, probably as a consequence of lower transaction, monitoring and enforcing costs.
A Census of Optical and Near-Infrared Selected Star-Forming and Passively Evolving Galaxies at Redshift Z~2
Creators: name: Reddy, Naveen A.
name: Erb, Dawn K.
name: Steidel, Charles C.
name: Shapley, Alice E.
name: Adelberger, Kurt L.
name: Pettini, Max
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Using the extensive multi-wavelength data in the GOODS-North field, we construct and draw comparisons between samples of optical and near-IR selected star-forming and passively evolving galaxies at redshifts 1.42.3 galaxies (Distant Red Galaxies; DRGs) are very similar as a function of K, with K<20 galaxies having ~120 Msun/yr, a factor of two to three higher than those with K>20.5. The absence of X-ray emission from the reddest DRGs and BzK galaxies with z-K>3 indicates they must have declining star formation histories to explain their red colors and low SFRs. While the M/L ratio of passively-evolving galaxies may be larger on average, the Spitzer/IRAC data indicate that their inferred stellar masses do not exceed the range spanned by optically selected galaxies, suggesting that the disparity in current SFR may not indicate a fundamental difference between optical and near-IR selected massive galaxies (M* > 10^11 Msun). We consider the contribution of UGR, BzK, DRG, and submillimeter galaxies (SMGs) to the SFRD at z~2, taking into account sample overlap. The total SFRD in the interval 1.480% could be selected by the UGR, BzK, and/or DRG criteria.
description: 22 pages, 20 figures, accepted to ApJ; change to Table 4
924: Private G Povey (grave information)
Creators: name: Project Team, Lest We Forget
Publisher: name: University of Oxford
Year: 2024
Subjects: classificationCode: 430304
subject: British history
classificationCode: 430308
subject: European history (excl. British, classical Greek and Roman)
classificationCode: 430316
subject: International history

description: My grandfather Private G. Povey. 33987 of the Duke of Cornwalls' Light Infantry was killed on the 4th of October 1917, and is buried in Ypres Reservoir Cemetery. Sadly he never saw his son (my father) as after his leave in August earlier that year, when my father was obviously conceived, he went back to the front and was later killed in the October. My father was born the following April.
WETLANDS, WILDLIFE, AND WATER QUALITY: TARGETING AND TRADE OFFS
Creators: name: Newbold, Stephen C.
name: Weinberg, Marca
name: Newbold, Stephen C.
name: Weinberg, Marca
Publisher: name: Unknown
Year: 2003
Subjects: Resource /Energy Economics and Policy

description: Cost-effective targeting of conservation activities has only recently been addressed by economists. Most work to date has focused on finding the best locations to set aside land for the protection of biodiversity. An economic approach to the problem, where biodiversity reserve networks are delineated to maximize the number of species protected subject to a budget constraint, has been shown to be much more cost-effective than the standard approach, where reserve networks are delineated subject to an area constraint, ignoring differences in costs across sites. This paper is among the first to use spatially explicit models of production functions for ecosystem services in an optimization framework for prioritizing sites for wetlands restoration. Tradeoffs between two classes of environmental benefits from wetlands restoration, habitat, and water quality were assessed in the Central Valley of California. Habitat benefits were estimated by a count regression model that relates breeding mallard abundances to the configuration of land use types in the study area, and water quality benefits were estimated by a spatially distributed model of nonpoint source pollution and nutrient attenuation in wetlands. Two decision scenarios were analyzed. In the first scenario the optimal configuration of restoration activity was determined for a small watershed, and in the second scenario sites were selected from those offered for enrollment in an easement program throughout the valley. The results reveal the potential for gains in effectiveness from spatial targeting, and they suggest that there will be substantial tradeoffs between environmental benefits. Maximizing habitat quality in the small watershed yielded a 34% increase in mallard abundance and a 3% decrease in nitrogen loads to the river. In contrast, maximizing water quality resulted in a 25% decrease in nitrogen loads and a 2% increase in mallard abundance. Qualitatively similar results were obtained when sites were selected from a set of offered sites throughout the valley, but the tradeoffs were not as severe. The results also suggest that at traditional funding levels the Wetlands Reserve Program in California could reduce nitrogen loads to rivers by approximately 29,000 kg and increase total mallard abundance in the breeding season by approximately 150 individuals throughout the Central Valley in a given year.
INTERVIEWER EFFECTS ON THE VALUATION OF GOODS WITH ETHICAL AND ENVIRONMENTAL ATTRIBUTES
Creators: name: Loureiro, Maria L.
name: Lotade-Manje, Justus
name: Loureiro, Maria L.
name: Lotade-Manje, Justus
Publisher: name: Unknown
Year: 2003
Subjects: Environmental Economics and Policy

description: This paper investigates the impact of interviewer effects on willingness to pay (WTP) estimates. Face-to-face surveys were conducted with two interviewers. Both interviewers used a transcript and conducted the survey at the same location and at same time. We found that responses to the WTP questions differ across eco-labeled products and by interviewer. This interviewer effect is particularly relevant when we analyze the impact on WTP estimates for eco-labeled products grown in countries associated with the origin of one of the interviewers.
Overview on direct and indirect measurements of cosmic rays - Some thoughts on galactic cosmic rays and the knee
Creators: name: Hoerandel, Joerg R.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: An overview is given on results from direct and indirect measurements of galactic cosmic rays. Their implications on the contemporary understanding of the origin of cosmic rays and the knee in their energy spectrum are discussed.
description: Invited overview, presented at the 19th European Cosmic Ray Symposium, August 30th - September 3rd, 2004, Florence, Italy
Optimal hedging with variational preferences under convex risk measures
Creators: name: Righi, Marcelo
Publisher: name: arXiv
Year: 2024
Subjects: subject: Mathematical Finance (q-fin.MF)
subject: FOS: Economics and business

description: We expose a theoretical hedging optimization framework with variational preferences under convex risk measures. We explore a general dual representation for the composition between risk measures and utilities. We study the properties of the optimization problem as a convex and monotone map per se. We also derive results for optimality and indifference pricing conditions. We also explore particular examples inside our setup.
LAND QUALITY, AGRICULTURAL PRODUCTIVITY, AND FOOD SECURITY AT LOCAL, REGIONAL, AND GLOBAL SCALES
Creators: name: Wiebe, Keith D.
name: Wiebe, Keith D.
Publisher: name: Unknown
Year: 2003
Subjects: subject: Food Security and Poverty
subject: Productivity Analysis
subject: land quality
subject: agricultural productivity
subject: food security

description: Econometric and simulation analyses indicate that land degradation does not threaten agricultural productivity growth and food security at the global level, but problems exist in some areas. Improving market performance could reduce erosion-induced yield losses to 0.1 percent per year and the number of hungry people in less-developed countries by 5 percent over 10 years.
Anti-solar differential rotation
Creators: name: Kitchatinov, L. L.
name: Ruediger, G.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The differential rotation of anti-solar type detected by observations for several stars may result from a fast meridional flow. The sufficiently intensive meridional circulation may be caused by large-scale thermal inhomogeneities or, perhaps, by tidal forcing from a companion star. First results of simulations of the anti-solar rotation of a giant star with magnetically induced thermal inhomogeneities are presented. Perspectives for observational check of the theory are discussed.
description: 5 pages, 6 figures, Astron. Nachr. 325, 496 (2004)
THE EFFECTS OF CANADIAN SPECIAL MILK CLASSES IN THE U.S. AND CANADIAN DAIRY TRADE
Creators: name: Seol, Hwayoung
name: Cox, Thomas L.
name: Chavas, Jean-Paul
name: Seol, Hwayoung
name: Cox, Thomas L.
name: Chavas, Jean-Paul
Publisher: name: Unknown
Year: 2003
Subjects: International Relations/Trade
Livestock Production/Industries

description: Canadian Special Milk Classes have been the focus of longstanding WTO disputes on whether they work as export subsidies. This paper models the Special Milk Classes and Commercial Export Milk (CEM) explicitly in the U.S. and Canadian dairy trade and finds their effects. The effects of trade liberalization are also discussed.
Limit cycles and chaos in planar hybrid systems
Creators: name: Llibre, Jaume
name: Santana, Paulo
Publisher: name: arXiv
Year: 2024
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: In this paper we study the family of planar hybrid differential systems formed by two linear centers and a polynomial reset map of any degree. We study their limit cycles and also provide examples of these hybrid systems exhibiting chaotic dynamics.
Cold collisions of C$_{2}^{-}$ anions with Li and Rb atoms in hybrid traps
Creators: name: Kas, M.
name: Liévin, J.
name: Vaeck, N.
name: Loreau, J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We present a theoretical investigation of reactive and non-reactive collisions of Li and Rb atoms with C$_{2}^{-}$ molecular anions at low temperatures in the context of sympathetic cooling in hybrid trap experiments. Based on recently reported accurate potential energy surfaces for the singlet and triplet states of the Li-C$_{2}^{-}$ and Rb-C$_{2}^{-}$ systems, we show that the associative electronic detachment reaction is slow if the colliding partners are in their ground state, but fast if they are excited. The results are expected to be representative of the alkali-metal series. We also investigate rotationally inelastic collisions in order to explore the cooling of the translational and rotational degrees of freedom of C$_2^-$ in hybrid ion-atom traps. The effect of micromotion is taken into account by considering Tsallis distributions of collision energies. We show that the translational cooling occurs much more rapidly than rotational cooling and that the presence of excited atoms leads to losses of anions on a timescale comparable to that of rotational cooling.
description: ICPEAC 2019 conference
Variation of the glass transition temperature with rigidity and chemical composition
Creators: name: Naumis, Gerardo G.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The effects of flexibility and chemical composition in the variation of the glass transition temperature are obtained by using the Lindemann criteria, that relates melting temperature with atomic vibrations. Using this criteria and that floppy modes at low frequencies enhance in a considerable way the average cuadratic displacement, we show that the consequence is a modified glass transition temperature. This approach allows to obtain in a simple way the empirically modified Gibbs-DiMarzio law, which has been widely used in chalcogenide glasses to fit the changes in the glass transition temperature with the chemical composition . The method predicts that the constant that appears in the law depends upon the ratio of two characteristic frequencies (or temperatures). Then, the constant for the Se-Ge-As glass is estimated by using the experimental density of vibrational states, and the result shows a very good agreement with the experimental fit from glass transition temperature variation.
A RISK PERCEPTION ANALYSIS OF GENETICALLY MODIFIED FOODS BASED ON STATED PREFERENCES
Creators: name: Bugbee, Marcia
name: Loureiro, Maria L.
name: Bugbee, Marcia
name: Loureiro, Maria L.
Publisher: name: Unknown
Year: 2003
Subjects: Risk and Uncertainty

description: Most of the existing literature deals with consumer willingness to pay for GM-free food, or consumer willingness to accept for GM food. However, it is well know that consumers have mixed views about GM foods. In this research, we do not presume that all consumers may just have positive or negative preferences about GM products. Rather, heterogeneous preferences are considered. This paper presents a contingent valuation questioning sequence and associated modeling approaches that allow identification of both positive and negative preferences. Willingness to pay (WTP) for the GM product is contrasted with willingness to accept (WTA) compensation to buy it.
Photometrically-corrected global infrared mosaics of Enceladus: New implications for its spectral diversity and geological activity
Creators: name: Robinel, Rozenn
name: Mouélic, Stéphane Le
name: Tobie, Gabriel
name: Massé, Marion
name: Seignovert, Benoît
name: Sotin, Christophe
name: Rodriguez, Sébastien
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Between 2004 and 2017, spectral observations have been gathered by the Visual and Infrared Mapping Spectrometer (VIMS) on-board Cassini (Brown et al., 2004) during 23 Enceladus close encounters, in addition to more distant surveys. The objective of the present study is to produce a global hyperspectral mosaic of the complete VIMS data set of Enceladus in order to highlight spectral variations among the different geological units. This requires the selection of the best observations in terms of spatial resolution and illumination conditions. We have carried out a detailed investigation of the photometric behavior at several key wavelengths (1.35, 1.5, 1.65, 1.8, 2.0, 2.25, 2.55 and 3.6 $μ$m), characteristics of the infrared spectra of water ice. We propose a new photometric function, based on the model of Shkuratov et al. (2011). When combined, corrected mosaics at different wavelengths reveal heterogeneous areas, in particular in the terrains surrounding the Tiger Stripes on the South Pole and in the northern hemisphere around 30°N, 90°W. Those areas appear mainly correlated to tectonized units, indicating an endogenous origin, potentially driven by seafloor hotspots.
description: Erratum: Fix south polar grid longitudes in Figures 9 and 11
PREFERENTIAL TRADE OF AGRICULTURAL COMMODITIES IN THE CARIBBEAN BASIN
Creators: name: Loper, Nathan
name: Abbott, Philip C.
name: Foster, Kenneth A.
name: Loper, Nathan
name: Abbott, Philip C.
name: Foster, Kenneth A.
Publisher: name: Unknown
Year: 2003
Subjects: International Relations/Trade

description: Preferential agricultural trade under the Caribbean Basin Initiative has been beneficial to participating countries, particularly for differentiated goods. Goods that have not performed well were either subject to policy changes, eroding preferences and deteriorating market trends or structural changes that diminished CBI exports.
MODELING CHANGES IN THE U.S. DEMAND FOR CROP INSURANCE DURING THE 1990S
Creators: name: Serra, Teresa
name: Goodwin, Barry K.
name: Featherstone, Allen M.
name: Serra, Teresa
name: Goodwin, Barry K.
name: Featherstone, Allen M.
Publisher: name: Unknown
Year: 2003
Subjects: Risk and Uncertainty

description: The crop insurance purchase decision for a group of Kansas farmers is analyzed using data from 1990s-a period that experienced many changes in the federal crop insurance program. Farm-level data are used. Results indicate a reduction in the elasticity of the demand for crop insurance with respect to premium rates by the end of the decade. This corresponded with a considerable increase in government subsidies by the end of the 1990s. This may also reflect the attractiveness of new revenue insurance products that may have made producers less sensitive to premium changes.
900: Pte Sidney Brown (photograph)
Creators: name: Project Team, Lest We Forget
Publisher: name: University of Oxford
Year: 2024
Subjects: classificationCode: 430304
subject: British history
classificationCode: 430308
subject: European history (excl. British, classical Greek and Roman)
classificationCode: 430316
subject: International history

description: Sidney Brown joined the Sherwood Foresters in 1915, and sent letters home from training camps in Northumberland and Southampton. He writes about shooting at Zeppelins over the coast of north-east England and thanks his mother for sending jam tarts as a treat. He is accepting of having to fight and possibly kill German soldiers. The final letter speaks about being shortly posted to France. His name is on the Thiepval memorial.
Automating Urban Soundscape Enhancements with AI: In-situ Assessment of Quality and Restorativeness in Traffic-Exposed Residential Areas
Creators: name: Lam, Bhan
name: Ong, Zhen-Ting
name: Ooi, Kenneth
name: Ong, Wen-Hui
name: Wong, Trevor
name: Watcharasupat, Karn N.
name: Boey, Vanessa
name: Lee, Irene
name: Hong, Joo Young
name: Kang, Jian
name: Lee, Kar Fye Alvin
name: Christopoulos, Georgios
name: Gan, Woon-Seng
Publisher: name: arXiv
Year: 2024
Subjects: subject: Audio and Speech Processing (eess.AS)
subject: Sound (cs.SD)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Formalized in ISO 12913, the "soundscape" approach is a paradigmatic shift towards perception-based urban sound management, aiming to alleviate the substantial socioeconomic costs of noise pollution to advance the United Nations Sustainable Development Goals. Focusing on traffic-exposed outdoor residential sites, we implemented an automatic masker selection system (AMSS) utilizing natural sounds to mask (or augment) traffic soundscapes. We employed a pre-trained AI model to automatically select the optimal masker and adjust its playback level, adapting to changes over time in the ambient environment to maximize "Pleasantness", a perceptual dimension of soundscape quality in ISO 12913. Our validation study involving ($N=68$) residents revealed a significant 14.6 % enhancement in "Pleasantness" after intervention, correlating with increased restorativeness and positive affect. Perceptual enhancements at the traffic-exposed site matched those at a quieter control site with 6 dB(A) lower $L_\text{A,eq}$ and road traffic noise dominance, affirming the efficacy of AMSS as a soundscape intervention, while streamlining the labour-intensive assessment of "Pleasantness" with probabilistic AI prediction.
description: 41 pages, 4 figures. Preprint submitted to Building and Environment
Simulation of the White Dwarf -- White Dwarf galactic background in the LISA data
Creators: name: Edlund, Jeffrey A.
name: Tinto, Massimo
name: Królak, Andrzej
name: Nelemans, Gijs
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: LISA (Laser Interferometer Space Antenna) is a proposed space mission, which will use coherent laser beams exchanged between three remote spacecraft to detect and study low-frequency cosmic gravitational radiation. In the low-part of its frequency band, the LISA strain sensitivity will be dominated by the incoherent superposition of hundreds of millions of gravitational wave signals radiated by inspiraling white-dwarf binaries present in our own galaxy. In order to estimate the magnitude of the LISA response to this background, we have simulated a synthesized population that recently appeared in the literature. We find the amplitude of the galactic white-dwarf binary background in the LISA data to be modulated in time, reaching a minimum equal to about twice that of the LISA noise for a period of about two months around the time when the Sun-LISA direction is roughly oriented towards the Autumn equinox. Since the galactic white-dwarfs background will be observed by LISA not as a stationary but rather as a cyclostationary random process with a period of one year, we summarize the theory of cyclostationary random processes and present the corresponding generalized spectral method needed to characterize such process. We find that, by measuring the generalized spectral components of the white-dwarf background, LISA will be able to infer properties of the distribution of the white-dwarfs binary systems present in our Galaxy.
description: 14 pages and 6 figures. Submitted to Classical and Quantum Gravity (Proceedings of GWDAW9)
OPTIMAL GRAZING PRESSURE UNDER OUTPUT PRICE AND PRODUCTION UNCERTAINTY WITH ALTERNATIVE FUNCTIONAL FORMS
Creators: name: Kaitibie, Simeon
name: Nganje, William E.
name: Brorsen, B. Wade
name: Epplin, Francis M.
name: Kaitibie, Simeon
name: Nganje, William E.
name: Brorsen, B. Wade
name: Epplin, Francis M.
Publisher: name: Unknown
Year: 2003
Subjects: Agribusiness

description: This study uses a Cox parametric bootstrap test to select between two specifications of the von Liebig hypothesis, a switching regression model and a non-linear mixed stochastic plateau function. The selected production function was used to determine optimal stocking density for dual-purpose winter wheat, under production and output price uncertainty. The switching regression approach was rejected in favor of the non-linear mixed stochastic plateau function. The relatively small difference in optimal stocking density between risk aversion and risk neutrality suggests that risk-aversion is much less important in explaining producer response to uncertainty than is nonlinearity in the production function.
902: Pte William John Ball (photograph)
Creators: name: Project Team, Lest We Forget
Publisher: name: University of Oxford
Year: 2024
Subjects: classificationCode: 430304
subject: British history
classificationCode: 430308
subject: European history (excl. British, classical Greek and Roman)
classificationCode: 430316
subject: International history

description: William was the youngest son of Elizabeth and John Ball of Blandford Dorset. He enlisted with the Somerset Light Infantry and was killed on Somme aged 22.
Direct Observation of Intravalley Phonon Scattering of 2s Excitons in MoSe$_2$ and WSe$_2$ Monolayers
Creators: name: McDonnell, Liam P.
name: Viner, Jacob
name: Rivera, Pasqual
name: Xu, Xiaodong
name: Smith, David C.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present a high-resolution resonance Raman study of hBN encapsulated MoSe$_2$ and WSe$_2$ monolayers at 4 K using excitation energies from 1.6 eV to 2.25 eV. We report resonances with the WSe$_2$ A2s and MoSe$_2$ A2s and B2s excited Rydberg states despite their low oscillator strength. When resonant with the 2s states we identify new Raman peaks which are associated with intravalley scattering between different Rydberg states via optical phonons. By calibrating the Raman scattering efficiency and separately constraining the electric dipole matrix elements, we reveal that the scattering rates for k=0 optical phonons are comparable for both 1s and 2s states despite differences in the envelope functions. We also observe multiple new dispersive Raman peaks including a peak at the WSe$_2$ A2s resonance that demonstrates non-linear dispersion and peak-splitting behavior that suggests that the dispersion relations for dark excitonic states at energies near the 2s state are extremely complex.
description: Submitted to IOP 2D Materials 16/04/20. Accepted in IOP 2D Materials 02/06/20. This is the version of the article before peer review or editing, as submitted by the authors to 2D Materials. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it
Discretizing Gravity in Warped Spacetime
Creators: name: Randall, Lisa
name: Schwartz, Matthew D.
name: Thambyahpillai, Shiyamala
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate the discretized version of the compact Randall-Sundrum model. By studying the mass eigenstates of the lattice theory, we demonstrate that for warped space, unlike for flat space, the strong coupling scale does not depend on the IR scale and lattice size. However, strong coupling does prevent us from taking the continuum limit of the lattice theory. Nonetheless, the lattice theory works in the manifestly holographic regime and successfully reproduces the most significant features of the warped theory. It is even in some respects better than the KK theory, which must be carefully regulated to obtain the correct physical results. Because it is easier to construct lattice theories than to find exact solutions to GR, we expect lattice gravity to be a useful tool for exploring field theory in curved space.
description: 17 pages, 4 figures; references added
921: George [surname unknown] (sketch, photograph)
Creators: name: Project Team, Lest We Forget
Publisher: name: University of Oxford
Year: 2024
Subjects: classificationCode: 430304
subject: British history
classificationCode: 430308
subject: European history (excl. British, classical Greek and Roman)
classificationCode: 430316
subject: International history

description: The items relate to the contributor's aunt's fiancée, whose name we think was George. The contributor was unsure as he was killed in action. The contributor's aunt lived until the age of eighty-nine and never married.
Implementing Non-Universal Features with a Random Matrix Theory Approach: Application to Space-to-Configuration Multiplexing
Creators: name: del Hougne, Philipp
name: Savin, Dmitry V.
name: Legrand, Olivier
name: Kuhl, Ulrich
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: We consider the efficiency of multiplexing spatially encoded information across random configurations of a metasurface-programmable chaotic cavity in the microwave domain. The distribution of the effective rank of the channel matrix is studied to quantify the channel diversity and to assess a specific system's performance. System-specific features such as unstirred field components give rise to nontrivial inter-channel correlations and need to be properly accounted for in modelling based on random matrix theory. To address this challenge, we propose a two-step hybrid approach. Based on an ensemble of experimentally measured scattering matrices for different random metasurface configurations, we first learn a system-specific pair of coupling matrix and unstirred contribution to the Hamiltonian, and then add an appropriately weighted stirred contribution. We verify that our method is capable of reproducing the experimentally found distribution of the effective rank with good accuracy. The approach can also be applied to other wave phenomena in complex media.
description: 5 pages including 4 figures + 7 pages Supplemental Material
Sweazey, George, Die missionarische Verkündigung in den Vereinigten Staaten
Creators: name: Wieske, Günter
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 9 Nr. 3 (1960): Ökumenische Rundschau, Band 9, Heft 3
Where is the Molecular Hydrogen in Damped Lyman-Alpha Absorbers?
Creators: name: Zwaan, M. A.
name: Prochaska, J. X.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We show in this paper why molecular millimeter absorption line searches in DLAs have been unsuccessful. We use CO emission line maps of local galaxies to derive the H2 column density distribution function f(N_H2) at z=0. We show that it forms a natural extension to f(N_HI): the H2 distribution exceeds f(N_HI) at N_H ~ 10^22 cm^-2 and exhibits a power law drop-off with slope ~ -2.5. Approximately 97% of the H2 mass density rho_H2 is in systems above N_H2=10^21 cm^-2. We derive a value rho_H2 = 1.1 x 10^7 h_70 M_sun Mpc^-3, which is ~25% the mass density of atomic hydrogen. Yet, the redshift number density of H2 above this N_H2 limit is only ~3 x 10^-4, a factor 150 lower than that for HI in DLAs at z=0. Furthermore, we show that the median impact parameter between a N_H2>10^21 cm^-2 absorber and the centre of the galaxy hosting the H2 gas is only 2.5 kpc. Based on arguments related to the Schmidt law, we argue that H2 gas above this column density limit is associated with a large fraction of the integral star formation rate density. Even allowing for an increased molecular mass density at higher redshifts, the derived cross-sections indicate that it is very unlikely to identify the bulk of the molecular gas in present quasar absorption lines samples. We discuss the prospects for identifying this molecular mass in future surveys.
description: 6 pages, 4 figures. Accepted for publication in the Astrophysical Journal