cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Electron-hole localization in coupled quantum dots
Creators: name: Troiani, Filippo
name: Hohenester, Ulrich
name: Molinari, Elisa
Publisher: name: arXiv
Year: 2002
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We theoretically investigate correlated electron-hole states in vertically coupled quantum dots. Employing a prototypical double-dot confinement and a configuration-interaction description for the electron-hole states, it is shown that the few-particle ground state undergoes transitions between different quantum states as a function of the interdot distance, resulting in unexpected spatial correlations among carriers and in electron-hole localization. Such transitions provide a direct manifestations of inter- and intradot correlations, which can be directly monitored in experiments.
description: 11 pages, 3 figures (eps), LaTeX 2e. To appear in PRB (Rapid Communication)
Gossip Based Ad-Hoc Routing
Creators: name: Haas, Zygmunt
name: Halpern, Joseph Y.
name: Li, Erran L.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences
subject: C.2.2

description: Many ad hoc routing protocols are based on some variant of flooding. Despite various optimizations, many routing messages are propagated unnecessarily. We propose a gossiping-based approach, where each node forwards a message with some probability, to reduce the overhead of the routing protocols. Gossiping exhibits bimodal behavior in sufficiently large networks: in some executions, the gossip dies out quickly and hardly any node gets the message; in the remaining executions, a substantial fraction of the nodes gets the message. The fraction of executions in which most nodes get the message depends on the gossiping probability and the topology of the network. In the networks we have considered, using gossiping probability between 0.6 and 0.8 suffices to ensure that almost every node gets the message in almost every execution. For large networks, this simple gossiping protocol uses up to 35% fewer messages than flooding, with improved performance. Gossiping can also be combined with various optimizations of flooding to yield further benefits. Simulations show that adding gossiping to AODV results in significant performance improvement, even in networks as small as 150 nodes. We expect that the improvement should be even more significant in larger networks.
description: 10 pages
Structure of Public Support for National Agricultural Research Systems: A Political Economy Perspective
Creators: name: Pardey, Philip G.
name: Kang, M. Sandra
name: Elliott, Howard
name: Pardey, Philip G.
name: Kang, M. Sandra
name: Elliott, Howard
Publisher: name: Unknown
Year: 1989
Subjects: Political Economy
Research and Development/Tech Change/Emerging Technologies

description: This paper initiates development of a set of stylized facts concerning the structure of public support for national agricultural research systems (NARS) within a neoclassical political economy framework. The aim is to place public funding of NARS in the broader context of the overall level of direct government assistance to agriculture. Using a newly constructed data set on NARS expenditures over the 1970-85 period, we observe a growing disparity in agricultural research intensity ratios, which measure the level of public support for NARS in relation to agricultural gross domestic production (AgGDP) between low and high-income countries. This growing disparity appears to be driven by much larger increases in support for agricultural research by highincome countries, coupled with a significantly slower growth in the size of their agricultural sector, despite the propensity oflow and middle-income countries to increase real support to agricultural research. As per-capita incomes rise the public agricultural expenditure ratio, which measures public expenditures on agriculture relative to the size of the agricultural sector, AgGDP, increases substantially. Public expenditures on agriculture were indexed on agricultural and non-agricultural populations to give a rough indication of the increasing incentives for rural 'distributional coalitions' to seek a redistribution of public expenditures in their favor. A relative research expenditure (RRE) ratio is developed, which measures the proportion of total public expenditure on agriculture spent on agricultural research. It provides an indication of the relative importance given to research on agriculture within the constraints imposed by overall public spending on agriculture. In contrast to the agricultural research intensity ratios, the RRE ratios suggest that agricultural research appears to command as large a share of the public purse devoted to agriculture in low and middle-income countries as it does in high-income countries. Expectations derived from the neoclassical political economy literature that research may have fared relatively better in high compared with low-income countries were not supported by the data.
Valuing groundwater recharge through agricultural production in the Hadejia-Nguru wetlands in northern Nigeria
Creators: name: Acharya, Gayatri
name: Barbier, Edward B.
name: Acharya, Gayatri
name: Barbier, Edward B.
Publisher: name: Unknown
Year: 2000
Subjects: subject: Crop Production/Industries
subject: Production Economics
subject: Production function approach
subject: Valuation
subject: Wetlands
subject: Groundwater recharge
subject: Ecosystem function

description: This study applies a production function approach to value the groundwater recharge function of the Hadejia-Nguru wetlands in northern Nigeria. The groundwater recharge function supports dry season agricultural production which is dependent on groundwater abstraction for irrigation. Using survey data this paper first carries out an economic valuation of agricultural production, per hectare of irrigated land. We then value the recharge function as an environmental input into the dry season agricultural production and derive appropriate welfare change measures. Welfare change is calculated using the estimated production functions and hypothetical changes in groundwater recharge and hence, groundwater levels. By focusing on agricultural production dependent solely on groundwater resources from the shallow aquifer, this study establishes that the groundwater recharge function of the wetlands is of significant importance for the floodplain. © 2000 Elsevier Science B.V. All rights reserved.
$β$ decay of odd-A nuclei with the interacting boson-fermion model based on the Gogny energy density functional
Creators: name: Nomura, K.
name: Rodríguez-Guzmán, R.
name: Robledo, L. M.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Nuclear Theory (nucl-th)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The low-energy excitations and $β$ decays of odd-A nuclei are studied within the interacting boson-fermion model (IBFM), based on the Gogny-D1M nuclear energy density functional (EDF). The constrained Hartree-Fock-Bogoliubov (HFB) approximation is employed to compute potential energy surfaces in terms of triaxial quadrupole degrees of freedom for even-even Xe and Ba nuclei in the mass $A\approx 130$ region. The mean field approximation also provides spherical single-particle energies and occupation probabilities for the neighboring odd-A nuclei. Those quantities represent a microscopic input for spectroscopic calculations in odd-A Xe and Ba, Cs and La isotopes. The Gamow-Teller (GT) and Fermi (F) transition matrix elements, needed to compute $β$-decay $\log{ft}$ values are obtained without any phenomenological fitting. It is shown that both the low-lying states and $β$ decays of the studied odd-A systems are described reasonably well within the employed theoretical framework.
description: 15 pages, 8 figures, 6 tables; to be published in Phys. Rev. C
Modelling technical change in Italian agriculture: a latent variable approach
Creators: name: Esposti, Roberto
name: Pierani, Pierpaolo
name: Esposti, Roberto
name: Pierani, Pierpaolo
Publisher: name: Unknown
Year: 2000
Subjects: subject: Research and Development/Tech Change/Emerging Technologies
subject: Italian agriculture
subject: MIMIC model
subject: Total factor productivity (TFP)
subject: Technical change

description: This paper presents an alternative approach to the measurement of technical change. It is based on the latent variable level of technology that enters explicitly the input demand system and on a hypothesis about the innovation generating process. By adding measurement error equations, the behavioral system can be viewed as a Multiple Indicators/Multiple Causes (MIMIC) model. The parameter estimates are obtained with a maximum likelihood estimator which involves the implicit covariance matrix. The analysis refers to Italian agriculture and the results provide some evidence on the nature and level of technical change during the years 1961-1991. © 2000 Elsevier Science B.V. All rights reserved.
MOESM1 of The association between gestational weight gain z-score and stillbirth: a case-control study
Creators: name: Pickens, Cassandra
name: Hogue, Carol
name: Howards, Penelope
name: Kramer, Michael
name: Badell, Martina
name: Dudley, Donald
name: Silver, Robert
name: Goldenberg, Robert
name: Pinar, Halit
name: Saade, George
name: Varner, Michael
name: Stoll, Barbara
Publisher: name: figshare
Year: 2019
Subjects: subject: Cell Biology
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics
subject: Science Policy

description: Additional file 1. Unadjusted and Adjusted Odds Ratios for GWG Z−scores and Stillbirth among Women of All Pre − pregnancy BMI Categories. This table displays the unadjusted and adjusted odds ratios for the association between GWG z−scores and stillbirth among women of all pre − pregnancy BMI categories. Selected GWG z−scores were compared to a referent z−score of 0. Adjusted models involved control for maternal sociodemographic, behavioral, and pregnancy characteristics.
Statistical Mechanics and Capacity-Approaching Error-Correcting Codes
Creators: name: Sourlas, Nicolas
Publisher: name: arXiv
Year: 2001
Subjects: subject: Condensed Matter (cond-mat)
subject: FOS: Physical sciences

description: I will show that there is a deep relation between error-correction codes and certain mathematical models of spin glasses. In particular minimum error probability decoding is equivalent to finding the ground state of the corresponding spin system. The most probable value of a symbol is related to the magnetization at a different temperature. Convolutional codes correspond to one-dimensional spin systems and Viterbi's decoding algorithm to the transfer matrix algorithm of Statistical Mechanics. I will also show how the recently discovered (or rediscovered) capacity approaching codes (turbo codes and low density parity check codes) can be analysed using statistical mechanics. It is possible to show, using statistical mechanics, that these codes allow error-free communication for signal to noise ratio above a certain threshold. This threshold depends on the particular code, and can be computed analytically in many cases.
Food crops, exports, and the short-run policy response of agriculture in Africa
Creators: name: Lamb, Russell L.
name: Lamb, Russell L.
Publisher: name: Unknown
Year: 2000
Subjects: subject: Agricultural and Food Policy
subject: Crop Production/Industries
subject: Production Economics
subject: Sub-Saharan Africa
subject: Supply response
subject: Structural adjustment

description: The response of agriculture to changes in relative prices is an important factor in the success of structural adjustment programs in Africa. In this paper I estimate supply functions for total agricultural output, food crops and export crops in 14 African countries for the years 1975 to 1990. Food and export crops are substitutes in production in the short run. Total agricultural output responds negatively to increases in export prices and positively to increases in food prices. A plausible explanation is that as farmers shift resources to export crop production, food supply falls in the short run, while the increase in export supply may take several years to materialize. The exchange rate is significant in explaining both food and export crop production and aggregate agricultural supply, suggesting that the exchange rate is acting as a proxy for excluded macroeconomic variables or that changes in the exchange rate are not passed immediately through to prices. © 2000 Elsevier Science B.V. All rights reserved.
Animal disease incidence and indemnity eradication programs
Creators: name: Kuchler, Fred
name: Hamm, Shannon
name: Kuchler, Fred
name: Hamm, Shannon
Publisher: name: Unknown
Year: 2000
Subjects: subject: Production Economics
subject: Research and Development/Tech Change/Emerging Technologies
subject: Indemnity eradication programs
subject: Scrapie

description: There are many options for controlling the spread of animal diseases. Some diseases have been treated as public sector problems and many nations have tried to control disease spread by purchasing sick animals from farmers. Government agencies have purchased breeding stock that might transmit diseases. Government agencies have purchased animals that might otherwise have gone to the slaughterhouse, thereby keeping pathogens out of the food supply. Our hypothesis is that when it is not immediately obvious to farmers or private sector buyers which animals carry or transmit diseases, a government indemnity program's success is not assured. Instead, disease control depends on farmers' ability to respond to the relative prices they face. We examine the incentives created by prices (indemnity payment levels) government agencies choose. The scrapie indemnity eradication program in the United States (1952-1992) provides a natural laboratory for measuring the responsiveness to government-set prices. We show that government-set prices played a major role in determining the program's outcome: the supply of infected animals was price elastic. We argue that short-run movements in relative prices and the number of infected animals offer a practical method for assessing program effectiveness. © 2000 Elsevier Science B. V. All rights reserved.
MADANIY TA'SIR VA AN'ANAVIY TARJIMALAR: TILI VA ODAMLAR
Creators: name: Asatullayeva, Dilrabo
Publisher: name: Zenodo
Year: 2025

description: Ushbu maqola madaniy ta’sir va an’anaviy tarjimalar o’rtasidagi bog’lanishni tahlil etadi. Madaniyat va til o’rtasidagi aloqalarni o’rganib, an’anaviy ifodalar va qadriyatlarning tarjimasi, jamiyatdagi til va madaniyat o’zgarishlariga qanday ta’sir ko’rsatishi ko’rib chiqiladi. Maqolada madaniy elementlar va tilning ahamiyati, ularning xalq hayotidagi o’rni, va xalqaro kommunikatsiyada madaniyatlarning qanday aks etishi tahlil qilinadi. Shuningdek, tarjimalar va madaniy o’zlikni saqlashning o’ziga xos jihatlari va globalizatsiya jarayonidagi yangi qiyinchiliklar ham yoritiladi. Maqola madaniy va lingvistik tadqiqotlarga qiziqqan olimlar, talaba va ilmiy jamoatchilik uchun muhim manba hisoblanadi.
Estimating labor supply of farm households under nonseparability: empirical evidence from Nepal
Creators: name: Abdulai, Awudu
name: Regmi, Punya Prasad
name: Abdulai, Awudu
name: Regmi, Punya Prasad
Publisher: name: Unknown
Year: 2000
Subjects: subject: Labor and Human Capital
subject: Production Economics
subject: Nepal
subject: Agricultural household model
subject: Farm couples
subject: Nonseparability
subject: Local labor markets
subject: Structural estimation
subject: Shadow wage rates

description: This paper examines the labor supply of farm households in Nepal using a recently developed methodology that accounts for the simultaneity between production and consumption decisions of the households. Estimates of marginal products of male and female labor or shadow wages are obtained from an agricultural production function. An instrumental variable approach is then used to recover the household's structural labor supply from variations in the shadow wages and income, as well as other household characteristics. The findings reveal that both male and female total labor supply are sensitive to changes in shadow wages and income. Human capital embodied in education is found to exert a significant positive effect on output, but has no statistically significant impact on total labor supply of individuals. The results also rejects the existence of efficient labor markets in rural Nepal. © 2000 Elsevier Science B.V. All rights reserved.
Aniptumnus quadridentatus
Creators: name: Ng, Peter K. L.
name: Clark, Paul F.
Publisher: name: Zenodo
Year: 2008
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Decapoda
Pilumnidae
Aniptumnus
Aniptumnus quadridentatus

description: Aniptumnus quadridentatus (De Man, 1895)
(Figures 13–18)
 Aniptumnus quadridentatus: Ng 2002: 213, Fig. 2, zoea I (in part).
description: Published as part of Ng, Peter K. L. & Clark, Paul F., 2008, A revision of Latopilumnus Türkay & Schuhmacher, 1985, and Aniptumnus Ng, 2002 (Crustacea: Decapoda: Brachyura: Pilumnidae) with larval comparisons, pp. 885-912 in Journal of Natural History 42 (9 - 12) on page 901, DOI: 10.1080/00222930701869422, http://zenodo.org/record/5224975
Effect of galaxy mergers on star formation rates
Creators: name: Pearson, W. J.
name: Wang, L.
name: Alpaslan, M.
name: Baldry, I.
name: Bilicki, M.
name: Brown, M. J. I.
name: Grootes, M. W.
name: Holwerda, B. W.
name: Kitching, T. D.
name: Kruk, S.
name: van der Tak, F. F. S.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Galaxy mergers and interactions are an integral part of our basic understanding of how galaxies grow and evolve over time. However, the effect that galaxy mergers have on star formation rates (SFR) is contested, with observations of galaxy mergers showing reduced, enhanced and highly enhanced star formation. We aim to determine the effect of galaxy mergers on the SFR of galaxies using statistically large samples of galaxies, totalling over 200\,000, over a large redshift range, 0.0 to 4.0. We train and use convolutional neural networks to create binary merger identifications (merger or non-merger) in the SDSS, KiDS and CANDELS imaging surveys. We then compare the galaxy main sequence subtracted SFR of the merging and non-merging galaxies to determine what effect, if any, a galaxy merger has on SFR. We find that the SFR of merging galaxies are not significantly different from the SFR of non-merging systems. The changes in the average SFR seen in the star forming population when a galaxy is merging are small, of the order of a factor of 1.2. However, the higher the SFR above the galaxy main sequence, the higher the fraction of galaxy mergers. Galaxy mergers have little effect on the SFR of the majority of merging galaxies compared to the non-merging galaxies. The typical change in SFR is less than 0.1~dex in either direction. Larger changes in SFR can be seen but are less common. The increase in merger fraction as the distance above the galaxy main sequence increases demonstrates that galaxy mergers can induce starbursts.
description: 20 pages, 17 figures, 6 tables, 3 appendices, accepted for publication in A&A
Casimir energy of dielectric systems
Creators: name: Marachevsky, Valery N.
Publisher: name: arXiv
Year: 2002
Subjects: subject: Condensed Matter (cond-mat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A new formula for the Casimir energy of a dispersive dilute dielectric ball is discussed. The formula for the Casimir energy of a polarizable particle situated in a perfectly conducting wedge-shaped cavity is derived by a path-integral coordinate space method in quantum field theory.
description: Latex 2e, 4 pages, no figures, a talk given at the International Meeting "Quantum Gravity and Spectral Geometry" (Naples, Italy, July 2-7, 2001)
The extent of resource use inefficiencies in cotton production in Pakistan's Punjab: an application of Data Envelopment Analysis
Creators: name: Shafiq, Muhammad
name: Rehman, Tahir
name: Shafiq, Muhammad
name: Rehman, Tahir
Publisher: name: Unknown
Year: 2000
Subjects: subject: Crop Production/Industries
subject: Production Economics
subject: Resource /Energy Economics and Policy
subject: Data Envelopment Analysis
subject: Technical efficiency
subject: Allocative efficiency
subject: Cotton

description: This paper attempts to identify sources of resource use inefficiency for cotton production in Pakistan's Punjab. The use of a non-parametric method, Data Envelopment Analysis (DEA), is developed to study the relative technical and allocative efficiencies of individual farms which use similar inputs, produce the same product and operate under comparable circumstances. In the 'cotton-wheat' system of Pakistan, there are a considerable number of farms that are both technically and allocatively inefficient. The use of DEA shows that the technique provides a clear identification of both the extent and the sources of technical and allocative inefficiencies in cotton production. However, both the interpretation of the farm level results generated and the projection of these results to a higher level require care, given the technical nature of the agricultural production processes.© 2000 Elsevier Science B.V. All rights reserved.
Short and long-run returns to agricultural R&D in South Africa, or will the real rate of return please stand up?
Creators: name: Schimmelpfennig, David
name: Thirtle, Colin
name: Zyl, Johan Van
name: Arnade, Carlos Anthony
name: Khatri, Yougesh
name: Schimmelpfennig, David
name: Thirtle, Colin
name: Zyl, Johan Van
name: Arnade, Carlos Anthony
name: Khatri, Yougesh
Publisher: name: Unknown
Year: 2000
Subjects: subject: Production Economics
subject: Research and Development/Tech Change/Emerging Technologies
subject: South Africa
subject: TFP
subject: Returns to agricultural R&D
subject: Profit function

description: This paper briefly presents the results of a total factor productivity (TFP) study of South African commercial agriculture, for 1947-1997, and illustrates some potential pitfalls in rate of return to research (ROR) calculations. The lag between R&D and TFP is analyzed and found to be only 9 years, with a pronounced negative skew, reflecting the adaptive focus of the South African system. The two-stage approach gives a massive ROR of 170%. The predetermined lag parameters are then used in modeling the knowledge stock, to refine the estimates of the ROR from short- and long-run dual profit functions. In the short run, with the capital inputs treated as fixed, the ROR is a more reasonable 44%. In the long run, with adjustment of the capital stocks, it rises to 113%, which would reflect the fact that new technology is embodied in the capital items. However, the long-run model raises a new problem since capital stock adjustment takes 11 years, 2 years longer than the lag between R&D and TFP. If this is assumed to be the correct lag, the ROR falls to 58%, a best estimate. The paper draws attention to the possible sensitivity of rate of return calculations to assumed lag structure, particularly when the lag between changes in R&D and TFP is skewed. © 2000 Elsevier Science B. V. All rights reserved.
MOESM1 of Pharmacistsâ€™ knowledge, attitude and involvement in palliative care in selected tertiary hospitals in southwestern Nigeria
Creators: name: Rasaq ADISA
name: Aderonke ANIFOWOSE
Publisher: name: figshare
Year: 2019
Subjects: subject: Medicine
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Cancer
subject: Science Policy

description: Additional file 1. Questionnaire for the study.
Improved Bhabha cross section at LEP and the number of light neutrino species
Creators: name: Janot, Patrick
name: Jadach, Stanisław
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: In $\rm e^+ \rm e^-$ collisions, the integrated luminosity is generally measured from the rate of low-angle Bhabha interactions $\rm e^+ e^- \to e^+ e^- $. In the published LEP results, the inferred theoretical uncertainty of $\pm 0.061\%$ on the predicted rate is significantly larger than the reported experimental uncertainties. We present an updated and more accurate prediction of the Bhabha cross section in this letter, which is found to reduce the Bhabha cross section by about $0.048\%$, and its uncertainty to $\pm 0.037\%$. When accounted for, these changes modify the number of light neutrino species (and its accuracy), as determined from the LEP measurement of the hadronic cross section at the Z peak, to $N_ν= 2.9963 \pm 0.0074$. The 20-years-old $2 σ$ tension with the Standard Model is gone.
description: 28 pages, 13 tables, 4 figures. Revision submitted to Physics Letters B. With respect to v1: 1) Hadronic vacuum polarization (VPhad) updated from FJ'17 to FJ'19, and compared to DHMZ'20 and KNT'20. 2) Leptonic vacuum polarization (VPlept) updated from LO to NNNLO. 3) Number of light neutrino species changed from 2.9975 to 2.9970 with new VPhad, and from 2.9970 to 2.9963 with new VPlept
Analysis of a Cone-Based Distributed Topology Control Algorithm for Wireless Multi-hop Networks
Creators: name: Li, Erran L.
name: Halpern, Joseph Y.
name: Bahl, Paramvir
name: Wang, Yi-Min
name: Wattenhofer, Roger
Publisher: name: arXiv
Year: 2002
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences
subject: C.2.1;C.2.2

description: The topology of a wireless multi-hop network can be controlled by varying the transmission power at each node. In this paper, we give a detailed analysis of a cone-based distributed topology control algorithm. This algorithm, introduced in [16], does not assume that nodes have GPS information available; rather it depends only on directional information. Roughly speaking, the basic idea of the algorithm is that a node $u$ transmits with the minimum power $p_{u,α}$ required to ensure that in every cone of degree $α$ around $u$, there is some node that $u$ can reach with power $p_{u,α}$. We show that taking $α= 5π/6$ is a necessary and sufficient condition to guarantee that network connectivity is preserved. More precisely, if there is a path from $s$ to $t$ when every node communicates at maximum power, then, if $α<= 5π/6$, there is still a path in the smallest symmetric graph $G_α$ containing all edges $(u,v)$ such that $u$ can communicate with $v$ using power $p_{u,α}$. On the other hand, if $α> 5π/6$, connectivity is not necessarily preserved. We also propose a set of optimizations that further reduce power consumption and prove that they retain network connectivity. Dynamic reconfiguration in the presence of failures and mobility is also discussed. Simulation results are presented to demonstrate the effectiveness of the algorithm and the optimizations.
description: 10 pages
First Constraint on Coherent Elastic Neutrino-Nucleus Scattering in Argon
Creators: name: COHERENT Collaboration
name: Akimov, D.
name: Albert, J. B.
name: An, P.
name: Awe, C.
name: Barbeau, P. S.
name: Becker, B.
name: Belov, V.
name: Blackston, M. A.
name: Bolozdynya, A.
name: Cabrera-Palmer, B.
name: Cervantes, M.
name: Collar, J. I.
name: Cooper, R. L.
name: Daughhetee, J.
name: Coello, M. del Valle
name: Detwiler, J. A.
name: D'Onofrio, M.
name: Efremenko, Y.
name: Erkela, E. M.
name: Elliott, S. R.
name: Fabris, L.
name: Febbraro, M.
name: Fox, W.
name: Galindo-Uribarri, A.
name: Green, M. P.
name: Hansen, K. S.
name: Heath, M. R.
name: Hedges, S.
name: Johnson, T.
name: Kaemingk, M.
name: Kaufman, L. J.
name: Khromov, A.
name: Konovalov, A.
name: Kozlova, E.
name: Kumpan, A.
name: Li, L.
name: Librande, J. T.
name: Link, J. M.
name: Liu, J.
name: Mann, K.
name: Markoff, D. M.
name: Moreno, H.
name: Mueller, P. E.
name: Newby, J.
name: Parno, D. S.
name: Penttila, S.
name: Pershey, D.
name: Radford, D.
name: Rapp, R.
name: Ray, H.
name: Raybern, J.
name: Razuvaeva, O.
name: Reyna, D.
name: Rich, G. C.
name: Rudik, D.
name: Runge, J.
name: Salvat, D. J.
name: Scholberg, K.
name: Shakirov, A.
name: Simakov, G.
name: Sinev, G.
name: Snow, W. M.
name: Sosnovtsev, V.
name: Suh, B.
name: Tayloe, R.
name: Tellez-Giron-Flores, K.
name: Thornton, R. T.
name: Tolstukhin, I.
name: Vanderwerp, J.
name: Varner, R. L.
name: Virtue, C. J.
name: Visser, G.
name: Wiseman, C.
name: Wongjirad, T.
name: Yang, J.
name: Yen, Y. -R.
name: Yoo, J.
name: Yu, C. -H.
name: Zettlemoyer, J.
Publisher: name: arXiv
Year: 2019
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Coherent elastic neutrino-nucleus scattering (CEvNS) is the dominant neutrino scattering channel for neutrinos of energy $E_ν< 100$ MeV. We report a limit for this process using data collected in an engineering run of the 29 kg CENNS-10 liquid argon detector located 27.5 m from the Oak Ridge National Laboratory Spallation Neutron Source (SNS) Hg target with $4.2\times 10^{22}$ protons on target. The dataset yielded $< 7.4$ observed CEvNS events implying a cross section for the process, averaged over the SNS pion decay-at-rest flux, of $<3.4 \times 10^{-39}$ cm$^{2}$, a limit within twice the Standard Model prediction. This is the first limit on CEvNS from an argon nucleus and confirms the earlier CsI non-standard neutrino interaction constraints from the collaboration. This run demonstrated the feasibility of the ongoing experimental effort to detect CEvNS with liquid argon.
Switching algorithms and buffer management in asynchronous transfer mode networks
Creators: name: Erimli, Bahadir
Publisher: name: California Institute of Technology
Year: 1996
Subjects: Electrical Engineering

description: In this thesis, two different but related concepts in Asynchronous Transfer Mode (ATM) are discussed. Due to its multirate nature, ATM creates new problems in terms of switching and buffering. In the first part, the switching problems are investigated. The situation is rooted upon the multirate connections in a 'circuit-switching-like' environment. The multirate nature of ATM results in the loss of strictly nonblocking three stage space-division switches unless a 'speed-up factor' is provided between the outside ports and the internal links of the switch. To keep this factor to a minimum, call routing algorithms are considered as a possible solution. Several call routing algorithms are compared in terms of their blocking probability under various circumstances. A simple algorithm, named fixed priority routing algorithm, stands out among these, both in terms of simplicity and low blocking rate. Afterwards a bin packing model is used to investigate the reasons behind this.

In the second part, buffer management in ATM nodes is considered. In the traditional sense, the burstier the traffic is, the higher, it was believed, the cell loss will be at a buffer into which a number of these sources are transmitting. It is shown that this is not always the case and under the circumstances defined - the worst-case model - other types of sources that output traffic that is less bursty might create higher cell loss than burstier sources. All sources considered are leaky-bucket controlled and stay within their contract limits with the network at all times. Initially greedy on-off source and the three-state source types are compared. After establishing that the comparison between these two in terms of cell loss rate is highly dependent on the size of the buffer being transmitted onto, other source types that might create even higher cell loss rates are searched for. One such characteristic group of sources is found and is presented.
Odd-Prime Formula and the Complete Proofs of the Goldbach, Polignac, and Twin Prime Conjectures.pdf
Creators: name: CALCABEN, Danny
Publisher: name: figshare
Year: 2025
Subjects: classificationCode: 490401
subject: Algebra and number theory

description: This research paper presented the development of a formula for odd-prime numbers and showed its powerful application in proving longstanding conjectures in number theory. The method involved the development of a formula for odd-composite numbers and investigation of its properties to establish a connection with primes. Key results of this study include the derivation of an odd-prime formula which directly helped provide complete proofs to longstanding problems in prime number theory: the Goldbach, Polignac, and Twin Prime Conjectures. It offers a significant insight that made a big contribution in providing solutions to these problems which remained unsolved for centuries.
On the singularity structure of the discrete KdV equation
Creators: name: Um, Doyong
name: Willox, Ralph
name: Grammaticos, Basil
name: Ramani, Alfred
Publisher: name: arXiv
Year: 2019
Subjects: subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: The discrete KdV (dKdV) equation, the pinnacle of discrete integrability, is often thought to possess the singularity confinement property because it confines on an elementary quadrilateral. Here we investigate the singularity structure of the dKdV equation through reductions of the equation, obtained for initial conditions on a staircase with height 1, and show that it is much more subtle than one might assume. We first study the singularities for the mappings obtained after reduction and contrast these with the singularities that arise in non-integrable generalizations of those mappings. We then show that the so-called `express method' for obtaining dynamical degrees for second order mappings can be succesfully applied to all the higher order mappings we derived. Finally, we use the information obtained on the singularity structure of the reductions to describe an important subset of singularity patterns for the dKdV equation and we present an example of a non-confining pattern and explain why its existence does not contradict the integrability of the dKdV equation.
description: 20 pages, 10 figures [revised version with 6 references added]
Impact of rice innovation on the Health and Education on Farm Households in Selected States in Nigeria
Creators: name: Ojehomon, V.E.T.
name: Rita, A. Digne
name: Naomishie, Afiavi Agboh
name: Ayinde, Opeyemi Eyitayo
name: Ojehomon, V.E.T.
name: Rita, A. Digne
name: Naomishie, Afiavi Agboh
name: Ayinde, Opeyemi Eyitayo
Publisher: name: Unknown
Year: 2013
Subjects: subject: Agricultural and Food Policy
subject: Food Security and Poverty
subject: Research and Development/Tech Change/Emerging Technologies
subject: Agricultural Innovation
subject: Education
subject: Health
subject: Local Average Response Function (LARF)

description: Agricultural innovation can halt the vicious cycle of poverty by improving income while reducing hunger, malnutrition and improve health. The specific objective of this study is estimates of the impact of NERICA adoption on rice yields, income and food expenditure of male and female farmers in selected states Nigeria (first generation of NERICA project beneficiaries). A three stage sampling was done: the states and the villages were purposively selected. while two adjacent villages and the farmers were randomly selected. Data for the study were as collected from primary source using structured questionnaire. Descriptive statistics and counterfactual analytical procedure using two instrumental variable(IV)-based estimators to estimate the Local Average Treatment Effect (LATE) of adoption of rice variety innovation on productivity and poverty indicators health and education of women and men in NERICA dissemination project States in Nigerian. Sixty (60%) of male headed household with autonomous production systems for husband and wives adopted the rice innovation. The percentage of adopter dropped from 42% significantly to 40% in 2010 due to lack of access to seed. The result indicated a 354.61Kg yield impact recorded for female adopters. When compared with the male farmers, the female adopters had 84% more yield increase than male adopters. The implication is that adoption of rice innovation (NERICA) will be expected to be high in household where both men and women are empowered to make decision as relates to agriculture. Innovations have to be accessible to for transformation to take place.
Hybrid quantum computation gate with trapped ion system
Creators: name: Gan, H. C. J.
name: Maslennikov, Gleb
name: Tseng, Ko-Wei
name: Nguyen, Chihuan
name: Matsukevich, Dzmitry
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The hybrid approach to quantum computation simultaneously utilizes both discrete and continuous variables which offers the advantage of higher density encoding and processing powers for the same physical resources. Trapped ions, with discrete internal states and motional modes which can be described by continuous variables in an infinite dimensional Hilbert space, offer a natural platform for this approach. A nonlinear gate for universal quantum computing can be implemented with the conditional beam splitter Hamiltonian $|e\rangle \langle e| ( a^{\dagger} b + a b^{\dagger})$ that swaps the quantum states of two motional modes, depending on the ion's internal state. We realize such a gate and demonstrate its applications for quantum state overlap measurements, single-shot parity measurement, and generation of NOON states.
description: 10 pages, 7 figures
On the Cardy-Verlinde Entropy Formula in Viscous Cosmology
Creators: name: Brevik, I.
name: Odintsov, S. D.
Publisher: name: arXiv
Year: 2001
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The results of the paper of Verlinde [hep-th/0008140], discussing the holographic principle in a radiation dominated universe, are extended when allowing the cosmic fluid to possess a bulk viscosity. This corresponds to a non-conformally invariant theory. The generalization of the Cardy-Verlinde entropy formula to the case of a viscous universe seems from a formal point of view to be possible, although we question on physical grounds some elements in this kind of theory, especially the manner in which the Casimir energy is evaluated. Our discussion suggests that for non-conformally invariant theories the holographic definition of Casimir energy should be modified.
description: 11 pages, LaTeX, no figures. Discussion added in Sec. 2. To appear in Phys. Rev. D
Generation of low-symmetry perovskite structures for ab initio computation
Creators: name: Xie, N.
name: Zhang, J.
name: Zhang, N.
name: Chen, X.
name: Wang, D.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Ion displacements are the cause of the ferroelectricity in perovskites. By properly shifting ions, ab initio computations have been extensively used to investigate properties of perovsites in various structural phases. In addition to the relatively simple ion displacements, perovskites have another type of structural distortion known as antiferrodistortion or oxygen octahedron tilting. The interplay between these two types of distortions have generated abundant structural phases that can be tedious to prepare for ab initio computation, especially for large supercells. Here, we design and implement a computer program to facilitate the generation of distorted perovskite structures, which can be readily used for ab initio computation to gain further insight into the perovskite of a given structural phase.
Deconfined critical point in a doped random quantum Heisenberg magnet
Creators: name: Joshi, Darshan G.
name: Li, Chenyuan
name: Tarnopolsky, Grigory
name: Georges, Antoine
name: Sachdev, Subir
Publisher: name: arXiv
Year: 2019
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We describe the phase diagram of electrons on a fully connected lattice with random hopping, subject to a random Heisenberg spin exchange interactions between any pair of sites and a constraint of no double occupancy. A perturbative renormalization group analysis yields a critical point with fractionalized excitations at a non-zero critical value $p_c$ of the hole doping $p$ away from the half-filled insulator. We compute the renormalization group to two loops, but some exponents are obtained to all loop order. We argue that the critical point $p_c$ is flanked by confining phases: a disordered Fermi liquid with carrier density $1+p$ for $p>p_c$, and a metallic spin glass with carrier density $p$ for $p
description: 22+32 pages, 13 figures
Marketing Efficiency and Determinants of Marketable Surplus in Vegetable Production in Kwara State, Nigeria
Creators: name: Adenuga, A.H.
name: Fakayode, S.B.
name: Adewole, R.A.
name: Adenuga, A.H.
name: Fakayode, S.B.
name: Adewole, R.A.
Publisher: name: Unknown
Year: 2013
Subjects: subject: Crop Production/Industries
subject: Marketing
subject: FOS: Economics and business
subject: Marketing Efficiency
subject: Marketable Surplus
subject: Multiple Regression Analysis
subject: Vegetable
subject: Kwara State

description: Marketing of vegetables is a complex phenomenon due to their perishable nature, seasonality and bulkiness, and as such, vegetable production requires an efficient marketing system. This study was therefore carried out to examine the marketing efficiency and determinants of marketable surplus in vegetables production in Kwara state, Nigeria. Data were collected using a well structured questionnaire from 75 respondents comprising 35 vegetable farmers and 40 vegetable marketers from 6 vegetable producing communities and 4 popular vegetable markets in the state. Descriptive statistics, multiple regression analysis and marketing efficiency measure were the major analytical tools employed for the study. Result of the multiple regression analysis revealed that, educational level of the household head, farming experience, spoilage at farm and household were the significant determinants of marketable surplus in vegetable production in the study area. Based on the study findings, it is recommended that daily local markets with small processing units and motor able roads be established near the vegetable farms to minimize marketing loss. The government should come up with Adult literacy programmes to educate the farmers and raise their efficiency in vegetable marketing.
Contribution of traditional food products (Oil palm) to food security and income of rural communities in Southern Benin
Creators: name: Adetonah, Sounkoura
name: Coulibaly, O.
name: Ntandou-Bouzitou, G.
name: Padonou, S.
name: Koumassa, L.
name: Adetonah, Sounkoura
name: Coulibaly, O.
name: Ntandou-Bouzitou, G.
name: Padonou, S.
name: Koumassa, L.
Publisher: name: Unknown
Year: 2013
Subjects: subject: Agribusiness
subject: Community/Rural/Urban Development
subject: Value Chain
subject: Traditional Foods
subject: Palm Oil
subject: Market Access.

description: Traditional food systems in Sub-Saharan Africa are changing mainly because of globalized food market integration. There is a knowledge gap about the potential value of traditional foods and diets for health. A dynamics of imported new food products substituting to traditional foods rich in vitamins and micronutrients is reported in various studies. However there is opportunity to valorize traditional food products. In Benin a study has been undertaken on palm oil a traditional food product and substantial source of incomes for farmers for its contribution to local economy. The objective is to analyze a performing value chain of palm oil to increase incomes of actors involved in Benin. A total of 60 producers, 30 processors, 30 sellers and 120 consumers selected according to some criteria. Value chain approach is used to identify the actors, the type of governance of the chain and the performance indicators. Results show that actors are diversified. Research and extension services and NGOs are support agents. Oil palm sellers yield the highest net margin among actors. Good quality nuts and oil are determinant in the demand from consumers. Contracts between sellers and customers and between sellers and processors are informal and market guide the governance of the palm oil value chain. Gender relations show that men, women and youth are key actors of the chain. Women are involved in the processing and sales. The study recommends a better access to product market and the need to increase the value added at each segment of the chain.
The effect of food related personality traits and lifestyle orientation on consumer’s behaviour related to extra virgin olive oil: estimation of an extended hybrid choice model.
Creators: name: Yangui, Ahmed
name: Font, Montserrat Costa
name: Gil, José María
name: Yangui, Ahmed
name: Font, Montserrat Costa
name: Gil, José María
Publisher: name: Unknown
Year: 2013
Subjects: subject: Food Consumption/Nutrition/Food Safety
subject: Marketing
subject: FOS: Economics and business
subject: Hybrid choice model
subject: extra virgin olive oil
subject: personality traits
subject: choice experiment

description: Due to the increasing interest on understanding the formation of consumer’s food choice process, the hybrid choice model (HCM) has been developed. HCM represents a promising new class of models which merge classic choice models with structural equations models (SEM) for latent variables (LV). Regardless of their conceptual appeal, up to date the application of HCM in agro food marketing remains very scarce. The present work extends previous HCM applications by first estimating a random parameter logit model (RPL) into panel data context (taking into account the heterogeneity around the mean) and second, estimating the relationships between latent variables. Furthermore, in order to ascertain the role of psychological factors in consumer’s behavioural process of decision towards a traditional food, variables such as food related personality traits, purchase habits and lifestyle orientation were introduced. The model pretends to better understand Catalan consumer’s behaviour towards extra virgin olive oil. The findings suggest that the incorporation of inferred LV for understanding individuals’ food decision making constructions is needed. That is, some LV have indirect effects associated with consumer’s purchase intention towards organic olive oil, and that almost all LV considered have a direct effect related to consumer’s utilities associated with extra virgin olive oil. The results reveal a high and significant heterogeneity, highlighting the role of the housewife with high level school education as responsible of both household food purchases and preparation of familiar dishes.