cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Negative parity pentaquarks in large Nc QCD and quark model
Creators: name: Pirjol, Dan
name: Schat, Carlos
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Recently, the 1/Nc expansion has been applied to the study of exotic baryons containing both quarks and antiquarks. We extend this approach to exotic states with mixed symmetric spin-flavor symmetry, which correspond in the quark model to negative parity pentaquarks, and discuss the large Nc predictions for their mass spectrum. The heavy exotics Qbar q^4 transform as 3, 6bar,15 and 15' under flavor SU(3), while the light states include the exotic multiplets 10bar, 27, 35. We give mass relations among these multiplets following from the 1/Nc expansion. In the quark model, the mass splittings between these states are given by color-spin interactions. Using the observation of an anticharmed exotic by the H1 collaboration, we give predictions for the masses of other expected heavy pentaquarks.
description: 18 pages, one figure, uses youngtab.sty; v3: eq.(40) corrected, final version to appear in PRD
Intrinsic Luminescence Blinking from Plasmonic Nanojunctions
Creators: name: Chen, Wen
name: Roelli, Philippe
name: Ahmed, Aqeel
name: Verlekar, Sachin
name: Hu, Huatian
name: Banjac, Karla
name: Lingenfelder, Magali
name: Kippenberg, Tobias J.
name: Tagliabue, Giulia
name: Galland, Christophe
Publisher: name: arXiv
Year: 2020
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Plasmonic nanojunctions, consisting of adjacent metal structures with nanometre gaps, can support localised plasmon resonances that boost light matter interactions and concentrate electromagnetic fields at the nanoscale. In this regime, the optical response of the system is governed by poorly understood dynamical phenomena at the frontier between the bulk, molecular and atomic scales. Here, we report ubiquitous spectral fluctuations in the intrinsic light emission from photo-excited gold nanojunctions, which we attribute to the light-induced formation of domain boundaries and quantum-confined emitters inside the noble metal. Our data suggest that photoexcited carriers and gold adatom - molecule interactions play key roles in triggering luminescence blinking. Surprisingly, this internal restructuring of the metal has no measurable impact on the Raman signal and scattering spectrum of the plasmonic cavity. Our findings demonstrate that metal luminescence offers a valuable proxy to investigate atomic fluctuations in plasmonic cavities, complementary to other optical and electrical techniques.
FORMING A CLUSTER STRATEGY FOR TEXTILE INDUSTRY DEVELOPMENT IN UZBEKISTAN
Creators: name: Nasirkhodjaeva, Dilyafruz
name: Nasirkhodjaeva, Dilyafruz
Publisher: name: Unknown
Year: 2010
Subjects: subject: Industrial Organization
subject: Marketing
subject: FOS: Economics and business
subject: Production Economics
subject: Cluster
subject: textile industry
subject: competitiveness
subject: cotton fiber
subject: innovations.

description: The article confers urgency of establishing clusters in textile industry. Particular focus is given to resource interaction among compound elements of national textile cluster. Policy recommendations targeted to development of cluster in the textile sector of Uzbekistan are provided.
A Description of Voluntary Policy Methods for Natural Resource Management
Creators: name: Parminter, Terry G.
name: Parminter, Terry G.
Publisher: name: Unknown
Year: 2010
Subjects: Agricultural and Food Policy
Environmental Economics and Policy
Land Economics/Use

description: The voluntary policies being used by local authorities to deliver Resource Management Act outcomes are considered nonstatutory policy methods under the Act, which does not define them or describe how they might be selected and implemented. One economist has been able to list over 50 different economic methods. A similar list has not been available for policy agents interested in drawing upon the rich and extensive experience of people in other disciplines such as agricultural extension and social marketing. Applied literature in a number of social science disciplines has been used in this paper to put such a list together. The author describes possible voluntary policy methods including those associated with adult learning, communication, networking and engineering. A typology of voluntary policy methods is combined with a knowledge of market segmentation and learning styles to design voluntary policy strategies that can be used to supplement or replace regulatory or market based methods. It is apparent that the standard of voluntary policy design can be improved through a greater awareness of the attributes of the different voluntary policy methods and how they can be combined effectively. Through greater strategic use of voluntary policy methods, and a process of monitoring and continual improvement, the outcomes desired in Resource Management Act legislation could be achieved more effectively without any increase in the number of rules required.
Backbending phenomena in light nuclei at A~60 mass region
Creators: name: El-Kameesy, S. U.
name: Alharbi, H. H.
name: Y
name: Alhendi, H. A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Recent studies of the backbending phenomenon in medium light weight nuclei near A~60 expanded greatly our interest about how the single particle orbits are nonlinearly affected by the collective motion. As a consequence we have applied a modi ed version of the exponential model with the inclusion of paring correlation to describe the energy spectra of the ground state bands and/or the backbending phenomenon in mass region at A~60. A firm conclusion is obtained concerning the successful validity of the proposed modified model in describing the backbending phenomenon in this region. Comparison with different theoretical descriptions is discussed.
description: 4 pages, 1 figures
The Lieb-Thirring inequality for interacting systems in strong-coupling limit
Creators: name: Kögler, Kevin
name: Nam, Phan Thành
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mathematical Physics (math-ph)
subject: Analysis of PDEs (math.AP)
subject: Spectral Theory (math.SP)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We consider an analogue of the Lieb-Thirring inequality for quantum systems with homogeneous repulsive interaction potentials, but without the antisymmetry assumption on the wave functions. We show that in the strong-coupling limit, the Lieb-Thirring constant converges to the optimal constant of the one-body Gagliardo-Nirenberg interpolation inequality without interaction.
description: Final version to appear in Arch. Ration. Mech. Anal
MARKAZIY OSIYO MINTAQASI DAVLATLARINING OʻZARO HAMKORLIGINI TARTIBGA SOLISH MASALALARI
Creators: name: Sergaziyev, Temurxan
Publisher: name: Zenodo
Year: 2025

description: Mazkur maqolada Markaziy Osiyo mintaqasi davlatlarining oʻzaro hamkorligini tartibga solish masalalari bayon etilgan. Shuningdek, maqola Markaziy Osiyoda davlatlar oʻrtasidagi hamkorlik va madaniy-iqtisodiy, siyosiy va huquqiy aloqalarni rivojlantirish bilan bogʻliq masalalarni ham tahlil etishga qaratilgandir.
Deviations from plastic barriers in Bi$_2$Sr$_2$CaCu$_2$O$_{8+δ}$ thin films
Creators: name: Zhang, Y. Z.
name: Wang, Z.
name: Lu, X. F.
name: Wen, H. H.
name: de Marneffe, J. F.
name: Deltour, R.
name: Jansen, A. G. M.
name: Wyder, P.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Resistive transitions of an epitaxial Bi$_2$Sr$_2$CaCu$_2$O$_{8+δ}$ thin film were measured in various magnetic fields ($H\parallel c$), ranging from 0 to 22.0 T. Rounded curvatures of low resistivity tails are observed in Arrhenius plot and considered to relate to deviations from plastic barriers. In order to characterize these deviations, an empirical barrier form is developed, which is found to be in good agreement with experimental data and coincide with the plastic barrier form in a limited magnetic field range. Using the plastic barrier predictions and the empirical barrier form, we successfully explain the observed deviations.
description: 5 pages, 6 figures; PRB 71, 052502 (2005)
Lehman - Early Childhood Language and Bullying in an English-medium School in China.pdf
Creators: name: Lehman, Clayton
Publisher: name: figshare
Year: 2020
Subjects: subject: 200303 English as a Second Language
subject: FOS: Languages and literature
subject: 130204 English and Literacy Curriculum and Pedagogy (excl. LOTE, ESL and TESOL)
subject: FOS: Educational sciences
subject: 130304 Educational Administration, Management and Leadership

description: The purpose of this small-scale study was to examine whether language is a factor in the reporting of bullying behavior by young English language learners enrolled in an early childhood program of an English-medium school in China. Further investigated was whether an English-only language policy affects the reporting of bullying behavior. Participants of the study included eleven preschool students, their parents, five Chinese teaching assistants, and ten foreign teachers. Methods of data collection included student interviews and the completion of questionnaires by parents, Chinese teaching assistants, and foreign teachers. The results indicate both language and language policy are factors in the reporting of bullying behavior.
Thermal fluctuations and vortex lattice structures in chiral $p$-wave superconductors: robustness of double-quanta vortices
Creators: name: Krohg, Fredrik Nicolai
name: Babaev, Egor
name: Garaud, Julien
name: Haugen, Håvard Homleid
name: Sudbø, Asle
Publisher: name: arXiv
Year: 2020
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We use large-scale Monte-Carlo simulations to study thermal fluctuations in chiral $p$-wave superconductors in an applied magnetic field in three dimensions. We consider the thermal stability of previously predicted unusual double-quanta flux-line lattice ground states in such superconductors. In previous works it was shown that, neglecting thermal fluctuations, a chiral $p$-wave superconductor forms an hexagonal lattice of doubly-quantized vortices, except extremely close to the vicinity of $H_{c2}$ where double-quanta vortices split apart. We find dissociation of double-quanta vortices driven by thermal fluctuations. However, our calculations also show that the previous predictions of hexagonal doubly-quantized vortices, where thermal fluctuations were ignored, are very robust in the considered model.
description: 21 pages, 12 figures, submitted to Physical Review B
Off-Shell Extension of the Chiral Reduction Formula
Creators: name: Kamano, Hiroyuki
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We present a proper off-mass-shell extension of the chiral reduction formula (CHRF) proposed by Yamagishi and Zaned. This is achieved by rewriting the CHRF in a manifestly consistent form with the conventional LSZ reduction formula.
description: v.2. 16 pages; v.3. 11 pages, Version to apper in Prog. Theor. Phys
NLO Corrections to lepton pair production beyond the Standard Model at hadron colliders
Creators: name: Choudhury, Debajyoti
name: Majhi, Swapan
name: Ravindran, V.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider lepton pair production at a hadron collider in a class of effective theories with the relevant operators being four-fermion contact interaction. Despite the nonrenormalizable nature of the interaction, we explicitly demonstrate that calculating QCD corrections is both possible and meaningful. Calculating the corrections for various differential distributions, we show that these can be substantial and significantly different from those within the SM. Furthermore, the corrections have a very distinctive flavour dependence. And finally, the scale dependence of the cross sections are greatly reduced once the NLO corrections are taken into account.
description: 23 pages, 14 figures, few typos corrected, written in JHEP style
Agricultural Production Survey Frames: Changes over time, issues, and challenges
Creators: name: Watt, Jean
name: Watt, Jean
Publisher: name: Unknown
Year: 2010
Subjects: subject: Agricultural and Food Policy
subject: Crop Production/Industries
subject: Environmental Economics and Policy
subject: Farm Management
subject: Agriculture
subject: statistics
subject: population
subject: survey
subject: frame

description: New Zealand has a long history of producing official statistics on agricultural, horticultural, and forestry production. Having a good population or survey frame is a key factor enabling the collection and production of quality statistics. Several population frames have been used over time for agricultural production censuses and surveys. These include land based frames, administrative registers, farmer and grower lists, and combinations of these. This paper discusses the frame currently used and earlier frames and associated challenges, including: the transition from a land based to administrative frame, coverage issues, frame updating, and issues when comparing statistics based on different frames. The paper discusses frames used for the production of other official agricultural and forestry statistics.
Accurately simulating nine-dimensional phase space of relativistic particles in strong fields
Creators: name: Li, Fei
name: Decyk, Viktor K.
name: Miller, Kyle G.
name: Tableman, Adam
name: Tsung, Frank S.
name: Vranic, Marija
name: Fonseca, Ricardo A.
name: Mori, Warren B.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Next-generation high-power lasers that can be focused to intensities exceeding 10^23 W/cm^2 are enabling new physics and applications. The physics of how these lasers interact with matter is highly nonlinear, relativistic, and can involve lowest-order quantum effects. The current tool of choice for modeling these interactions is the particle-in-cell (PIC) method. In strong fields, the motion of charged particles and their spin is affected by radiation reaction. Standard PIC codes usually use Boris or its variants to advance the particles, which requires very small time steps in the strong-field regime to obtain accurate results. In addition, some problems require tracking the spin of particles, which creates a 9D particle phase space (x, u, s). Therefore, numerical algorithms that enable high-fidelity modeling of the 9D phase space in the strong-field regime are desired. We present a new 9D phase space particle pusher based on analytical solutions to the position, momentum and spin advance from the Lorentz force, together with the semi-classical form of RR in the Landau-Lifshitz equation and spin evolution given by the Bargmann-Michel-Telegdi equation. These analytical solutions are obtained by assuming a locally uniform and constant electromagnetic field during a time step. The solutions provide the 9D phase space advance in terms of a particle's proper time, and a mapping is used to determine the proper time step for each particle from the simulation time step. Due to the analytical integration, the constraint on the time step needed to resolve trajectories in ultra-high fields can be greatly reduced. We present single-particle simulations and full PIC simulations to show that the proposed particle pusher can greatly improve the accuracy of particle trajectories in 9D phase space for given laser fields. A discussion on the numerical efficiency of the proposed pusher is also provided.
Challenges, needs, and contributions of heritage language students in foreign language classrooms
Creators: name: Shinbo, Yayoi
Publisher: name: University of British Columbia
Year: 2009

description: In recent years, heritage language education has been receiving renewed interest by policy makers, applied linguists, and language educators in the United States, Canada, and many other countries all over the world. The number of publications and heritage language (HL) education initiatives are gradually increasing, as more universities start offering special language track courses designed for heritage language students (HLSs). However, there has been little research exploring how those students perceive their experiences learning their own HL in foreign language (FL) classrooms. This study attempted to better understand HLSs' experiences in FL classrooms in relation to those of instructors and non-heritage language students (non- HLSs). It examined heritage language students' weaknesses and needs, strengths, challenges, and ways of using them as a resource. The data were collected through questionnaires, interviews, observations, and e-mails and were analyzed by emerging themes guided by research questions. The data showed the HLSs strongly felt that they need to improve reading, writing, and oral skills so as to become proficient enough to be employed at the professional level. Also, HLSs considered kanji as one of the major problems while instructors did not perceive this difficulty. Instructors' challenges were identified to be related to affective factors, inappropriate placement, and the lack of resources, whereas HLSs' challenges were associated with the unfamiliarity of FL pedagogy, mismatch of their linguistic skills with available courses, and psychological factors such as peers' negative perception and the level of support received by instructors. Although HLSs appeared to be a great resource in FL classrooms, instructors found it difficult to integrate their abilities into classroom activities due to affective factors.
Regional Trends and Pattern in Milk Production and Drivers for Future Growth in Gujarat State
Creators: name: Shah, Jignesh
name: Dave, Darshana
name: Shah, Jignesh
name: Dave, Darshana
Publisher: name: Unknown
Year: 2010
Subjects: Agricultural and Food Policy

description: The state of Gujarat has historically been the front runner in milk production activities. The state’s share in country’s milk production as well as per capita availability of milk have been increasing consistently, ensuring not only food security but also employment and livelihood sustenance in the rural areas. A phenomenal growth in milk production of cross-bred cows has been witnessed in recent years, especially in the southern and northern regions of the state. Historically, among the various factors contributing to growth in milk production, incremental dairy animal population has been the important factor. However, henceforth it is the yield of lactating animals – a single-most significant factor that needs to be focused for augmenting and sustaining growth in milk across any type of dairy animal.
Three-Strategy Level Negotiation Model and Four-Type Negotiation Matrix Applied to Brazilian Government Negotiation Cases
Creators: name: MURILLO DE OLIVEIRA DIAS
name: Navarro, Rodrigo
Publisher: name: figshare
Year: 2020
Subjects: subject: 160603 Comparative Government and Politics
subject: FOS: Political science

description: In this article, we tested and applied two negotiation tools into four Brazilian Government negotiation cases: (i) the Three-Strategy Level Negotiation Model, and (ii) the Four-Type Negotiation Matrix, aiming at addressing the nuances and challenges of Government negotiations in general. Key findings revealed both models suitable for deepening the current epistemology on the subject under review. Also, evidence suggests the adoption of integrative negotiation strategies for better deals. This research is intended to provide managers, practitioners, decision-makers, government agents, institutional government relations agents, with a new perspective on the negotiation dimensions, through the taxonomy presented. Implications of the four case findings for managerial practice are discussed.
A Minimum Energy Filter for Distributed Multirobot Localisation
Creators: name: Henderson, Jack
name: Trumpf, Jochen
name: Zamani, Mohammad
Publisher: name: arXiv
Year: 2020
Subjects: subject: Systems and Control (eess.SY)
subject: Multiagent Systems (cs.MA)
subject: Robotics (cs.RO)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: We present a new approach to the cooperative localisation problem by applying the theory of minimum energy filtering. We consider the problem of estimating the pose of a group of mobile robots in an environment where robots can perceive fixed landmarks and neighbouring robots as well as share information with others over a communication channel. Whereas the vast majority of the existing literature applies some variant of a Kalman Filter, we derive a set of filter equations for the global state estimate based on the principle of minimum energy filtering. We show how the filter equations can be decoupled and the calculations distributed among the robots in the network without requiring a central processing node. Finally, we provide a demonstration of the filter's performance in simulation.
description: To be published at 21st IFAC World Congress, Berlin, Germany, July 12-17, 2020
Transition from local to global phase synchrony in small world neural network and its possible implications for epilepsy
Creators: name: Percha, Bethany
name: Dzakpasu, Rhonda
name: Żochowski, Michał
Publisher: name: arXiv
Year: 2004
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Temporal correlations in the brain are thought to have very dichotomic roles. On one hand they are ubiquitously present in the healthy brain and are thought to underlie feature binding during information processing. On the other hand large scale synchronization is an underlying mechanism of epileptic seizures. In this paper we show a possible mechanism of transition to pathological coherence underlying seizure generation. We show that properties of phase synchronization in the 2-D lattice of non-identical coupled Hindmarsh-Rose neurons change radically depending on the connectivity structure. We modify the connectivity using the small world network paradigm and measure properties of phase synchronization using previously developed measure based on assessment of the distributions of relative interspike intervals. We show that the phase synchronization undergoes a dramatic change as a function of locality of network connections from local coherence strongly dependent on the distance between two neurons to global coherence exhibiting stronger phase locking and spanning the whole network.
Constraints of Milk Production: A Study on Cooperative and Non-cooperative Dairy Farms in West Bengal
Creators: name: Sarker, Debnarayan
name: Ghosh, Bikash Kumar
name: Sarker, Debnarayan
name: Ghosh, Bikash Kumar
Publisher: name: Unknown
Year: 2010
Subjects: Agricultural and Food Policy

description: The constraints that cooperative and non-cooperative dairy farms face in expanding milk production have been reported based on a field study on some cooperative and non-cooperative dairy farms in the state of West Bengal. The study has shown that non-cooperative farms face major constraints and high severity compared with cooperative farms in expanding milk production. Also important is that most of the severe or more severe constraints are infrastructural in nature. The study has suggested that for expanding milk production, the expansion of cooperative dairy farms other than non-cooperative dairy farms may overcome most of these difficulties.
Effects of Contrarians in the Minority Game
Creators: name: Zhong, Li-Xin
name: Zheng, Da-Fang
name: Zheng, Bo
name: Hui, P. M.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We study the effects of the presence of contrarians in an agent-based model of competing populations. Contrarians are common in societies. These contrarians are agents who deliberately prefer to hold an opinion that is contrary to the prevailing idea of the commons or normal agents. Contrarians are introduced within the context of the Minority Game (MG), which is a binary model for an evolving and adaptive population of agents competing for a limited resource. Results of numerical simulations reveal that the average success rate among the agents depends non-monotonically on the fraction $a_{c}$ of contrarians. For small $a_{c}$, the contrarians systematically outperform the normal agents by avoiding the crowd effect and enhance the overall success rate. For high $a_{c}$, the anti-persistent nature of the MG is disturbed and the few normal agents outperform the contrarians. Qualitative discussion and analytic results for the small $a_{c}$ and high $a_{c}$ regimes are also presented, and the crossover behavior between the two regimes is discussed.
description: revtex, 11 pages, 4 figures
Black hole head-on collisions and gravitational waves with fixed mesh-refinement and dynamic singularity excision
Creators: name: Sperhake, U.
name: Kelly, B.
name: Laguna, P.
name: Smith, K. L.
name: Schnetter, E.
Publisher: name: arXiv
Year: 2005
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present long-term-stable and convergent evolutions of head-on black hole collisions and extraction of gravitational waves generated during the merger and subsequent ring-down. The new ingredients in this work are the use of fixed mesh-refinement and dynamical singularity excision techniques. We are able to carry out head-on collisions with large initial separations and demonstrate that our excision infrastructure is capable of accommodating the motion of the individual black holes across the computational domain as well as their their merger. We extract gravitational waves from these simulations using the Zerilli-Moncrief formalism and find the ring-down radiation to be, as expected, dominated by the l=2, m=0 quasi-normal mode. The total radiated energy is about 0.1 % of the total ADM mass of the system.
description: Revised version, 1 figure added, accepted for publication in Phys.Rev.D, 15 pages, 10 figures, revtex 4.0
A theoretical inquiry on the individual right to international free trade : the international antidumping regime as a case study
Creators: name: Guan, Wenwei
Publisher: name: University of British Columbia
Year: 2009

description: The paper addresses the status of individuals in international governance by examining how individual rights are represented in international free trade. In the evolution of international trade from the GATT to the WTO, the fact that the non-discrimination principle has been well-established in trade agreements demonstrates the gradual emancipation of the individual in the global free market. However, international antidumping law, with a heritage from domestic antitrust law, has gradually developed into a discretionary trade instrument under the control of government administrations. The limited government ethic, which is supported by the emancipation ethic of international free trade, is distorted by the international antidumping regime. The contrasting development of the free trade and antidumping regimes indicates the tension between the emancipation of the individual in international trade and the growing discretionary powers of the government over foreign trade. Further inquiry into this tension demonstrates that the paternalistic and discretionary power of the government is rooted in the myth created by social contract theory. Although social contract theory emancipated individuals from the state of nature into civil society and builds the legitimacy of government on the consent of individuals, it simplifies the dynamic evolution of social institutions into a linear development, and grounds an imaginary contract as the "first mover" of the evolution. It thus does not sufficiently illegitimatize the paternalistic power of the government. However, the emancipation of the individual in international trade, the international development of human rights, and global democratization in general are processes of mutual influence rather than factors that are isolated from each other. Research shows the social institution is a spontaneous self-extended order based on the interaction among individuals. Accordingly, individuals should eventually participate in international trade without the trappings of nationality. Although international trade generally seems to be heading in this direction, international antidumping law indicates a backwards development which might be rooted in social contract theory. It is time to get rid of the myth of social contract theory and the paternalistic and discretionary power of the government over foreign trade, and to restore the international free trade to its inherently cosmopolitan base.
OSSOS: The Eccentricity and Inclination Distributions of the Stable Neptunian Trojans
Creators: name: Lin, Hsing Wen
name: Chen, Ying-Tung
name: Volk, Kathryn
name: Gladman, Brett
name: Murray-Clay, Ruth
name: Alexandersen, Mike
name: Bannister, Michele T.
name: Lawler, Samantha M.
name: Ip, Wing-Huen
name: Lykawka, Patryk Sofia
name: Kavelaars, J. J.
name: Gwyn, Stephen D. J.
name: Petit, Jean-Marc
Publisher: name: arXiv
Year: 2020
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The minor planets on orbits that are dynamically stable in Neptune's 1:1 resonance on Gyr timescales were likely emplaced by Neptune's outward migration. We explore the intrinsic libration amplitude, eccentricity, and inclination distribution of Neptune's stable Trojans, using the detections and survey efficiency of the Outer Solar System Origins Survey (OSSOS) and Pan-STARRS1. We find that the libration amplitude of the stable Neptunian Trojan population can be well modeled as a Rayleigh distribution with a libration amplitude width $σ_{A_phi}$ of 15$^\circ$. When taken as a whole, the Neptune Trojan population can be acceptably modeled with a Rayleigh eccentricity distribution of width $σ_e$ of 0.045 and a typical sin(i) x Gaussian inclination distribution with a width $σ_i$ of 14 +/- 2 degrees. However, these distributions are only marginally acceptable. This is likely because, even after accounting for survey detection biases, the known large Hr < 8 and small Hr >= 8 Neptune Trojans appear to have markedly different eccentricities and inclinations. We propose that like the classical Kuiper belt, the stable intrinsic Neptunian Trojan population have dynamically `hot' and dynamically `cold' components to its eccentricity/inclination distribution, with $σ_{e-cold}$ ~ 0.02 / $σ_{i-cold}$ ~ 6$^\circ$ and $σ_{e-hot}$~ 0.05 / $σ_{i-hot}$ ~ 18$^\circ$. In this scenario, the `cold' L4 Neptunian Trojan population lacks the Hr >= 8 members and has 13 +11/-6 `cold' Trojans with Hr < 8. On the other hand, the `hot' L4 Neptunian Trojan population has 136 +57/-48 Trojans with Hr < 10 -- a population 2.4 times greater than that of the L4 Jovian Trojans in the same luminosity range.
description: 15 pages, 7 figures, v3, accepted for publication in Icarus
Generalised Perk--Schultz models: solutions of the Yang-Baxter equation associated with quantised orthosymplectic superalgebras
Creators: name: Mehta, M
name: Dancer, K A
name: Gould, M D
name: Links, J
Publisher: name: arXiv
Year: 2005
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: The Perk--Schultz model may be expressed in terms of the solution of the Yang--Baxter equation associated with the fundamental representation of the untwisted affine extension of the general linear quantum superalgebra $U_q[sl(m|n)]$, with a multiparametric co-product action as given by Reshetikhin. Here we present analogous explicit expressions for solutions of the Yang-Baxter equation associated with the fundamental representations of the twisted and untwisted affine extensions of the orthosymplectic quantum superalgebras $U_q[osp(m|n)]$. In this manner we obtain generalisations of the Perk--Schultz model.
description: 10 pages, 2 figures
Effects of short-range order on the electronic structure of disordered metallic systems
Creators: name: Rowlands, Derwyn A.
name: Staunton, Julie B.
name: Gyorffy, Balazs L.
name: Bruno, Ezio
name: Ginatempo, Beniamino
Publisher: name: arXiv
Year: 2004
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: For many years the Korringa-Kohn-Rostoker coherent-potential approximation (KKR-CPA) has been widely used to describe the electronic structure of disordered systems based upon a first-principles description of the crystal potential. However, as a single-site theory the KKR-CPA is unable to account for important environmental effects such as short-range order (SRO) in alloys and spin fluctuations in magnets, amongst others. Using the recently devised KKR-NLCPA (where NL stands for nonlocal), we show how to remedy this by presenting explicit calculations for the effects of SRO on the electronic structure of the bcc Cu_{50}Zn_{50} solid solution.
description: 8 pages, 6 figures, Revised version
Quantum dynamics of a model for two Josephson-coupled Bose--Einstein condensates
Creators: name: Tonel, A. P.
name: Links, J.
name: Foerster, A.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: In this work we investigate the quantum dynamics of a model for two single-mode Bose--Einstein condensates which are coupled via Josephson tunneling. Using direct numerical diagonalisation of the Hamiltonian, we compute the time evolution of the expectation value for the relative particle number across a wide range of couplings. Our analysis shows that the system exhibits rich and complex behaviours varying between harmonic and non-harmonic oscillations, particularly around the threshold coupling between the delocalised and self-trapping phases. We show that these behaviours are dependent on both the initial state of the system as well as regime of the coupling. In addition, a study of the dynamics for the variance of the relative particle number expectation and the entanglement for different initial states is presented in detail.
description: 15 pages, 8 eps figures, accepted in J. Phys. A
Mutually synchronized macroscopic Josephson oscillations demonstrated by polarization analysis of superconducting terahertz emitters
Creators: name: Tsujimoto, M.
name: Fujita, S.
name: Kuwano, G.
name: Maeda, K.
name: Elarabi, A.
name: Hawecker, J.
name: Tignon, J.
name: Mangeney, J.
name: Dhillon, S. S.
name: Kakeya, I.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: We demonstrate mutual synchronization of Josephson oscillations in multiple stacks of intrinsic Josephson junctions of the cuprate superconductor Bi$_2$Sr$_2$CaCu$_2$O$_{8+δ}$. Detailed analysis of the full polarization parameters allows the determination of a phase correlation between the stacks: a simultaneous emission state is described by a linear combination of individual emission states with a phase retardation. This proves that the stacks are coupled via a Josephson plasma in a superconducting substrate and the coupling matrices can be extracted from polarization analyses. Our findings suggest a route towards the realization of high-power terahertz sources based on the synchronization of a large number of intrinsic Josephson junctions.
description: to be published as a Letter in Physical Review Applied (32 pages, 12 figures, 1 table)
Broiler Production in Punjab — An Economic Analysis
Creators: name: Singh, Varinder Pal
name: Sharma, V.K.
name: Sidhu, M.S.
name: Kingra, H.S.
name: Singh, Varinder Pal
name: Sharma, V.K.
name: Sidhu, M.S.
name: Kingra, H.S.
Publisher: name: Unknown
Year: 2010
Subjects: Agricultural and Food Policy

description: The cost and return analysis of different sizes of broiler farms in the Punjab state has been carried out based on the primary data collected from 140 broiler farmers for the period March 2008 to February 2009 in three districts, viz. Ludhiana, Hoshiarpur and Muktsar. The study has shown that the total fixed investments per bird have been highest on small farms, followed by medium and large farms. The total variable cost per bird has been reported highest on small farms, followed by medium and large farms. The total cost of meat production per bird has been found highest on small broiler farms, followed by medium and large farms. The net returns per bird over the variable costs have been recorded highest on large farms and economies of scale prevail on these farms. The meat-feed price ratio and benefit-cost ratio have been found to increase with increase in farm-size of broiler farms, which indicates better utilization of inputs on large farms. On the basis of net present value, benefit-cost ratio and internal rate of return, investment in broiler farming has been found profitable in all farm-sizes, it being most profitable on large farms, followed by medium and small farms. The small broiler farms have been observed highly sensitive to increase in costs and decrease in net returns. The study has observed that broiler farming is a profitable venture and has a bright future in the Punjab agriculture for improving economic status of the farming community
Criticality in quantum triangular antiferromagnets via fermionized vortices
Creators: name: Alicea, Jason
name: Motrunich, Olexei I.
name: Hermele, Michael
name: Fisher, Matthew P. A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We revisit two-dimensional frustrated quantum magnetism from a new perspective, with the aim of exploring new critical points and critical phases. We study easy-plane triangular antiferromagnets using a dual vortex approach, fermionizing the vortices with a Chern-Simons field. Herein we develop this technique for integer-spin systems which generically exhibit a simple paramagnetic phase as well as magnetically-ordered phases with coplanar and collinear spin order. Within the fermionized-vortex approach, we derive a low-energy effective theory containing Dirac fermions with two flavors minimally coupled to a U(1) and a Chern-Simons gauge field. At criticality we argue that the Chern-Simons gauge field can be subsumed into the U(1) gauge field, and up to irrelevant interactions one arrives at quantum electrodynamics in (2+1) dimensions (QED3). Moreover, we conjecture that critical QED3 with full SU(2) flavor symmetry describes the O(4) multicritical point of the spin model where the paramagnet and two magnetically-ordered phases merge. The remarkable implication is that QED3 with flavor SU(2) symmetry is dual to ordinary critical Phi^4 field theory with O(4) symmetry. This leads to a number of unexpected, verifiable predictions for QED3. A connection of our fermionized-vortex approach with the dipole interpretation of the nu=1/2 fractional quantum Hall state is also demonstrated. The approach introduced in this paper will be applied to spin-1/2 systems in a forthcoming publication.
description: 23 pages, 4 figures
Farming and the Internet: Reasons for Non-Use
Creators: name: Briggeman, Brian C.
name: Whitacre, Brian E.
name: Briggeman, Brian C.
name: Whitacre, Brian E.
Publisher: name: Unknown
Year: 2010
Subjects: subject: Agribusiness
subject: Community/Rural/Urban Development
subject: Farm Management
subject: ARMS
subject: farming
subject: Internet
subject: multinomial logit
subject: non-use

description: Rural broadband infrastructure and service has received a significant amount of funding through the American Recovery and Reinvestment Act of 2009. These funds should increase broadband availability, but will broadband be used in rural areas and in particular by farmers? This paper uses Agricultural Resource Management Survey data to investigate why the majority of U.S. farmers choose not to use the Internet in their farm business. Although frequently cited by policymakers, concerns about inadequate Internet service or security actually account for a small percentage of responses. This research identifies targeted educational programs that focus on alleviating perceived barriers to Internet use.
Roper-like resonances with various flavor contents and their two-pion emission decays
Creators: name: Arifi, A. J.
name: Nagahiro, H.
name: Hosaka, A.
name: Tanida, K.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We study the three-body decay of the newly observed bottom baryon $Λ_b^*(6072)$ by LHCb; $Λ_b^*(6072) \to Λ_b ππ$. Its mass about 500 MeV above the ground state $Λ_b$ and a broad width imply that the state could be an analogue of the Roper resonance of the nucleon $N(1440)$. In terms of sequential processes going through $Σ_b$ and $Σ_b^*$, we find that the observed invariant mass distribution is reproduced assuming its spin and parity $J^P = 1/2^+$. We discuss that the ratio of the two sequential processes and angular correlation of two pions are useful for the determination of spin and parity. We suggest further studies for the Roper resonance analogue in various flavor contents, raising an interesting and important question in baryon spectroscopy.
description: 4 pages, 5 figures
A Study on Staggered Public Procurement of Wheat in Punjab
Creators: name: Sidhu, M.S.
name: Singh, Gaganjot
name: Sidhu, M.S.
name: Singh, Gaganjot
Publisher: name: Unknown
Year: 2010
Subjects: Agricultural and Food Policy

description: Punjab is the second largest producer of wheat after Uttar Pradesh in the country but the state’s share in contribution to the central pool is maximum. The study has brought out that the marketed surplus of wheat was about 84 per cent with the selected farmers and about 96 per cent of the produce was sold during the post-harvest period. The study has revealed that per holding debt of the selected farmers, on an average, was Rs 1.71 lakh. About 99 per cent of wheat arrival was during the post-harvest period, from April to June in 2007-08. Wheat price in the months of April and May was almost equal to the MSP from 1997-98 to 2007- 08. During the lean period, there was a mixed scenario of the price. All this depended on the forces of the demand and supply. A vast majority (about 76 %) of the selected farmers have not been found in the favour of staggered public procurement of wheat. The public procurement agencies have their own practical limitations to operate in the grain markets throughout the year. Such a step will add to the procurement cost and the burden of food subsidy to be borne by the Union Government will increase further. Already it is Rs 56002 crore in 2009-10. Keeping in view the scenario at the farm and market levels, it is not feasible to have staggered public procurement of wheat in Punjab. Theoretically, it looks an attractive proposal but from practical point of view, it is not much feasible.
Dust attenuation in the nearby Universe: comparison between galaxies selected in the ultraviolet or in the infrared
Creators: name: Buat, V.
name: Iglesias-Paramo, J.
name: Seibert, M.
name: Burgarella, D.
name: Charlot, S.
name: Martin, D. C.
name: Xu, C. K.
name: Heckman, T. M.
name: Boissier, S.
name: Boselli, A.
name: Barlow, T. A.
name: Bianchi, L.
name: Byun, Y. -I.
name: Donas, J.
name: Forster, K.
name: Friedman, P. G.
name: Jelinski, P. N.
name: Lee, Y. -W.
name: Madore, B. F.
name: Malina, R. F.
name: Milliard, B.
name: Morrissey, P.
name: Neff, S. G.
name: Rich, R. M.
name: Schiminovitch, D.
name: Siegmund, O. H. W.
name: Small, T.
name: Szalay, A. S.
name: Welsh, B.
name: Wyder, T. K.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We compare the dust attenuation properties of two samples of galaxies purely selected in the near-ultraviolet (NUV) band (1750-2750 A, lambda_m = 2310 A) and in the far-infrared (FIR) at 60micron. These samples are built using the GALEX and IRAS sky surveys over ~600 square degrees. The NUV selected sample contains 95 galaxies detected down to NUV=16mag (AB system). 83 galaxies in this sample are spirals or irregulars and only two of them are not detected at 60micron. The FIR selected sample is built from the IRAS PSCz catalog complete down to 0.6Jy. Among the 163 sources, we select 118 star forming galaxies well measured by IRAS, all but 1 are detected in NUV and 14 galaxies are not detected in the far-ultraviolet (FUV) band (1350-1750 A, lambda_m = 1530 A). The dust to ultraviolet (NUV and FUV) flux ratio is calibrated to estimate the dust attenuation at both wavelengths. The median value of the attenuation in NUV is found to be ~1 mag for the NUV selected sample versus ~2 mag for the FIR selected one. Within both samples, the dust attenuation is found to correlate with the luminosity of the galaxies. Almost all the NUV selected galaxies and 2/3 of the FIR selected sample exhibit a lower dust attenuation than that expected from the tight relation found previously for starburst galaxies between the dust attenuation and the slope of the ultraviolet continuum. The situation is inverse for one third of the FIR selected galaxies: their extinction is higher than that deduced from their FUV-NUV color and the relation valid for starbursts.
description: This paper will be published as part of the Galaxy Evolution Explorer (GALEX) Astrophysical Journal Letters Special Issue
Dynamical complexity of discrete time regulatory networks
Creators: name: Lima, Ricardo
name: Ugalde, Edgardo
Publisher: name: arXiv
Year: 2005
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 37N25

description: Genetic regulatory networks are usually modeled by systems of coupled differential equations and by finite state models, better known as logical networks, are also used. In this paper we consider a class of models of regulatory networks which present both discrete and continuous aspects. Our models consist of a network of units, whose states are quantified by a continuous real variable. The state of each unit in the network evolves according to a contractive transformation chosen from a finite collection of possible transformations, according to a rule which depends on the state of the neighboring units. As a first approximation to the complete description of the dynamics of this networks we focus on a global characteristic, the dynamical complexity, related to the proliferation of distinguishable temporal behaviors. In this work we give explicit conditions under which explicit relations between the topological structure of the regulatory network, and the growth rate of the dynamical complexity can be established. We illustrate our results by means of some biologically motivated examples.
description: 28 pages, 4 figures