cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Conductance and persistent current of a quantum ring coupled to a quantum wire under external fields
Creators: name: Orellana, P. A.
name: de Guevara, M. L. Ladron
name: Pacheco, M.
name: Latge, A.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The electronic transport of a noninteracting quantum ring side-coupled to a quantum wire is studied via a single-band tunneling tight-binding Hamiltonian. We found that the system develops an oscillating band with antiresonances and resonances arising from the hybridization of the quasibound levels of the ring and the coupling to the quantum wire. The positions of the antiresonances correspond exactly to the electronic spectrum of the isolated ring. Moreover, for a uniform quantum ring the conductance and the persistent current density were found to exhibit a particular odd-even parity related with the ring-order. The effects of an in-plane electric field was also studied. This field shifts the electronic spectrum and damps the amplitude of the persistent current density. These features may be used to control externally the energy spectra and the amplitude of the persistent current.
description: Revised version, 7 pages and 9 figures. To appear in Phys. Rev. B
Lorditomaeus tanganyicanus Balthasar 1965
Creators: name: Gordon, Robert D.
name: Bordat, Patrice
name: Dellacasa, Giovanni
name: Dellacasa, Marco
Publisher: name: Zenodo
Year: 2008
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Aphodiidae
Lorditomaeus
Lorditomaeus tanganyicanus

description: Lorditomaeus tanganyicanus Balthasar
 Lorditomaeus tanganyicanus Balthasar, 1965: 211.
 Specimens examined (1): Kenya, Laikipia, MRC, 1800 m, N00 o 17’ - E36 o 53’, 1-13. V.2003, #1, leg. R. Gordon, Hippopotamus dung (1). (Specimen lost in shipment).
 Geographical distribution: Tanzania. This may be the first Kenya record.
 Dung preference: Not known, the only specimen found was taken from hippo dung.
description: Published as part of Gordon, Robert D., Bordat, Patrice, Dellacasa, Giovanni & Dellacasa, Marco, 2008, Dung beetles (Coleoptera: Scarabaeidae: Aphodiinae) of the Mpala Research Centre and environs, Laikipia District, Kenya, pp. 1-15 in Insecta Mundi 2008 (28) on page 7, DOI: 10.5281/zenodo.4532811
Identification of the Causal Agents of Cassava Stem and Root Rot Diseases Based on their Morphological Characteristics and Molecular Data
Creators: name: Pornpimon Athipunyakom
Publisher: name: Department of Agriculture
Year: 2019
Subjects: stem and root rot
cassava
Phytophthora melonis
Sclerotium rolfsii
Neoscytalidium dimidiatum

description: Thai Agricultural Research Journal, 37, 3, 307-319
Valori Inventariali – Costi di costruzione degli immobili e/o complessi immobiliari detenuti dallo “Istituto Nazionale di Astrofisica” Periodo dal 31 dicembre 2007 al 31 dicembre 2019
Creators: name: DE FILIPPIS, LIANA
name: PORTA, FRANCESCA ROMANA
name: BARTONE, ELISABETTA
name: BELLASSAI, Giancarlo
name: DI CICCO, Nicola
name: INAMO, DAVIDE
name: LIGGIO, Giovanni
name: MATTANA, Simone
name: MIGLIETTA, Luciano
name: PACINELLI, Lucio Primo
name: RAGO, Matteo
Publisher: name: O.A. Capodimonte
Year: 2021

description: Nel presente rapporto tecnico Il Tavolo Tecnico ha elaborato il valore inventariale degli immobili e/o dei complessi immobiliari detenuti dallo “Istituto Nazionale di Astrofisica” a qualunque titolo per ciascuno degli anni di riferimento dal 31 dicembre 2007 al 31 dicembre 2019. In particolare, ai fini della verifica del contenimento dei limiti di spesa, il rapporto ha determinato il Valore del patrimonio immobiliare dell’Ente alla data del 31 dicembre 2007 al fine di confrontare i Limiti di spesa teorici per la manutenzione straordinaria e ordinaria con la Spesa complessivamente impegnata sul Bilancio dello “Istituto Nazionale di Astrofisica” nell’anno 2007 come disposto dall’articolo 2, commi da 618 a 623 della Legge 24 dicembre 2007, numero 244.
Correlating $h\toμ^+μ^-$ to the Anomalous Magnetic Moment of the Muon via Leptoquarks
Creators: name: Crivellin, Andreas
name: Mueller, Dario
name: Saturnino, Francesco
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Recently, both ATLAS and CMS measured the decay $h\toμ^+μ^-$, finding a signal strength with respect to the Standard Model expectation of $1.2\pm0.6$ and $1.19\substack{+0.41+0.17\\-0.39 -0.16}$, respectively. This provides, for the first time, evidence that the Standard Model Higgs couples to second generation fermions. This measurement is particularly interesting in the context of the intriguing hints for lepton flavor universality violation, accumulated within recent years, as new physics explanations could also be tested in the $h\toμ^{+}μ^{-}$ decay mode. Leptoquarks are prime candidates to account for the flavor anomalies. In particular, they can provide the necessary chiral enhancement (by a factor $m_t/m_μ$) to address $a_μ$ with TeV scale new physics. In this letter we point out that such explanations of $a_μ$ also lead to enhanced effects in $h\toμ^+μ^-$ and we examine the correlations between $h\toμ^+μ^-$ and $a_μ$ within leptoquark models. We find that the effect in the branching ratio of $h\toμ^+μ^-$ ranges from several percent up to a factor three, if one aims at accounting for $a_μ$ at the $2\,σ$ level. Hence, the new ATLAS and CMS measurements already provide important constraints on the parameter space, rule out specific $a_μ$ explanations and will be very important to test the flavor anomalies in the future.
description: 8 pages, 3 figures, g-2 updated, EFT discussion added, version accepted for publication in PRL
Sytuacja na rynku pracy na obszarach wiejskich państw Unii Europejskiej
Situation on the Labour Market in Rural Areas of the EU Countries
Creators: name: Ossowska, Luiza
name: Janiszewska, Dorota
name: Ossowska, Luiza
name: Janiszewska, Dorota
Publisher: name: Unknown
Year: 2017
Subjects: subject: Agribusiness
subject: International Relations/Trade
subject: Labor and Human Capital
subject: labor market
subject: rural areas
subject: European Union countries
subject: rynek pracy
subject: obszary wiejskie
subject: państwa Unii Europejskiej

description: The main objective of this article is to discuss the diversity of European Union countries based on selected indicators of labour market in rural areas. Presented data come from 2015 (in comparison with 2013). The analysis was conducted using the cluster analysis. The following diagnostic features were used for the analysis: employment persons as a share of total 20-64 y.o. population, unemployment rate for the age group 15-74 in total active population, youth unemployment rate for the age group 15-24 in total active population and labour productivity. As a result of the cluster analysis examined regions were divided into five groups. / Synopsis. Celem badań jest omówienie zróżnicowania państw Unii Europejskiej na podstawie wybranych wskaźników z zakresu rynku pracy obszarów wiejskich. Dane liczbowe pochodzą z 2015 roku (porównawczo z 2013 roku). Badanie przeprowadzono za pomocą analizy skupień. Do analizy przyjęto następujące cechy diagnostyczne: udział osób zatrudnionych w ogólnej liczbie ludności w wieku 20-64, udział osób bezrobotnych w wieku 15-74 w ogólnej liczbie osób aktywnych zawodowo, udział osób bezrobotnych w wieku 15-24 w ogólnej liczbie ludności aktywnej zawodowo oraz produktywność pracy. W wyniku zastosowania analizy skupień podzielono badane państwa na pięć grup.
description: eISSN 2544-0659
Terza missione (M3) Proposta del “Tavolo Tecnico Permanente per il Patrimonio Immobiliare e i Lavori Pubblici” - “Progetto strategico di interventi di riqualificazione, diffusione, sviluppo sostenibile e innovativo del patrimonio culturale dello “Istituto Nazionale di Astrofisica” Gennaio 2020
Creators: name: DE FILIPPIS, LIANA
name: PORTA, FRANCESCA ROMANA
name: BARTONE, ELISABETTA
name: RAGO, Matteo
name: BELLASSAI, Giancarlo
name: DI CICCO, Nicola
name: INAMO, DAVIDE
name: LIGGIO, Giovanni
name: MATTANA, Simone
name: MIGLIETTA, Luciano
name: PACINELLI, Lucio Primo
Publisher: name: O.A. Capodimonte
Year: 2021

description: Il presente Rapporto Tecnico descrive il progetto volto a pianificare operazioni di riqualificazione e di valorizzazione delle “Strutture” che, sul territorio, hanno gli strumenti e le potenzialità per dare una risposta realmente efficace all’esigenza di promuovere iniziative di diffusione della cultura scientifica ed in particolare di quella astronomica. Il rapporto presenta un "concept" di un ampio progetto, che comprende tutte le “Strutture di Ricerca”, dal titolo “Progetto strategico di interventi di riqualificazione, diffusione, sviluppo sostenibile e innovativo del patrimonio culturale dello “Istituto Nazionale di Astrofisica”. Il progetto è articolato sotto forma di "itinerario" ideale sul territorio, che include tutte “Strutture di Ricerca”, ed è finalizzato alla riqualificazione delle risorse scientifico-museali dell'Istituto, nell’ottica del rilancio degli investimenti con gli obiettivi della sostenibilità ambientale, del risparmio energetico, dei progetti a carattere innovativo.
The role of germ-line immunoglobulins in autoimmunity and B cell activation
Creators: name: Cho, Chin-Wen C.
Publisher: name: University of British Columbia
Year: 2011

description: The human antibody response to the AD-2S1 epitope of glycoprotein B (gB) of human cytomegalovirus (HCMV) is dominated by a family of closely related somatically mutated antibodies that are all derived from the same V H and V K germline genes. Our laboratory has previously reconstructed the putative germ-line-based ancestor of a somatically hypermutated antibody (8F9) against the AD-2S1 and characterized and compared the binding of the germline- based ancestral immunoglobulin and 8F9 (Igs) to the AD-2SI epitope. IgG1 versions of these antibodies bound to AD-2S1 by ELISA and glycoprotein B (gB) by flow cytometry. Here, I show that 8F9 neutralizes viral infectivity whereas the germ-line Igs do not. However, the germ-line Igs bind to an unidentified, phylogenetically conserved auto-antigen. Small changes in the binding site of the germ-line Igs abolished binding to the auto-antigen. Even though mechanisms do exist during B cell development to eliminate self-reactive B cells, these observations suggest that autoreactivity is not necessarily a barrier for immature B cells to further develop into follicular B cells that subsequently undergo antigen-driven affinity maturation. Our observations that the hypermutated high affinity 8F9 antibody was derived from a primary immunoglobulin that was reactive with both an auto-antigen and AD-2S1 raise important questions including 1) the threshold of affinity required for triggering the clonal expansion and somatic mutation of new B cells, and, 2) the role of low-affinity cross-reactivity with ubiquitous antigens (eg self-antigens), in rescuing B lymphocytes with primary receptors for important pathogens from "death by neglect". To further understand the initial primary B cell receptor (BCR) response to AD-2S1, we expressed the membrane IgM forms of the 8F9 and primary germ-line Igs. In our experiments, the human germ-line Igs and 8F9 were expressed in a mouse cell-line as membrane IgM. I showed that cross-linking this human IgM triggered calcium release and tyrosine phosphorylation of intra-cellular signalling molecules. Morever, the membrane IgM bound AD2S1. Thus, I demonstrated that the human IgM expressed in a murine cell line is capable of activating many B cell responses and can serve as an in vitro model to look at affinity threshold. I also constructed lentiviral vectors to enable infection of RAG-1 knockout stem cells and reconstitution of RAG-1 knockout mice with B cells expressing human germ-line IgMs. The in vitro and in vivo systems will be useful in studying the affinity threshold needed to initiate B cell activation and other questions that are important in B cell immunity.
Quantum States Estimation: Root Approach
Creators: name: Bogdanov, Yu. I.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Multiparametric statistical model providing stable reconstruction of parameters by observations is considered. The only general method of this kind is the root model based on the representation of the probability density as a squared absolute value of a certain function, which is referred to as a psi-function in analogy with quantum mechanics. The psi-function is represented by an expansion in terms of an orthonormal set of functions. It is shown that the introduction of the psi-function allows one to represent the Fisher information matrix as well as statistical properties of the estimator of the state vector (state estimator) in simple analytical forms. A new statistical characteristic, a confidence cone, is introduced instead of a standard confidence interval. The chi-square test is considered to test the hypotheses that the estimated vector converges to the state vector of a general population and that both samples are homogeneous. The expansion coefficients are estimated by the maximum likelihood method. The method proposed may be applied to its full extent to solve the statistical inverse problem of quantum mechanics (root estimator of quantum states). In order to provide statistical completeness of the analysis, it is necessary to perform measurements in mutually complementing experiments (according to the Bohr terminology). The maximum likelihood technique and likelihood equation are generalized in order to analyze quantum mechanical experiments. It is shown that the requirement for the expansion to be of a root kind can be considered as a quantization condition making it possible to choose systems described by quantum mechanics from all statistical models consistent, on average, with the laws of classical mechanics.
description: 10 pages, the International Conference "Micro- and nanoelectronics- 2003" (ICMNE-2003), Zvenigorod, Moscow district, October 6-10, 2003
Macroretrus Peringuey 1908
Creators: name: Gordon, Robert D.
name: Bordat, Patrice
name: Dellacasa, Giovanni
name: Dellacasa, Marco
Publisher: name: Zenodo
Year: 2008
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Aphodiidae
Macroretrus

description: GENUS Macroretrus Péringuey
 Macroretrus Péringuey, 1908: 632; G. Dellacasa et al., 2001: 179.
 Distribution: Afrotropical Region.
description: Published as part of Gordon, Robert D., Bordat, Patrice, Dellacasa, Giovanni & Dellacasa, Marco, 2008, Dung beetles (Coleoptera: Scarabaeidae: Aphodiinae) of the Mpala Research Centre and environs, Laikipia District, Kenya, pp. 1-15 in Insecta Mundi 2008 (28) on page 7, DOI: 10.5281/zenodo.4532811
Prospects of probing dark energy with eLISA: Standard versus null diagnostics
Creators: name: Baral, Pratyusava
name: Roy, Soumendra Kishore
name: Pal, Supratik
Publisher: name: arXiv
Year: 2020
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Gravitational waves from supermassive black hole binary mergers along with an electromagnetic counterpart have the potential to shed `light' on the nature of dark energy in the intermediate redshift regime. Accurate measurement of dark energy parameters at intermediate redshift is extremely essential to improve our understanding of dark energy, and to possibly resolve a couple of tensions involving cosmological parameters. We present a Fisher matrix forecast analysis in the context of eLISA to predict the errors for three different cases: the non-interacting dark energy with constant and evolving equation of state (EoS), and the interacting dark sectors with a generalized parametrization. In all three cases, we perform the analysis for two separate formalisms, namely, the standard EoS formalism and the \textit{Om} parametrization which is a model-independent null diagnostic for a wide range of fiducial values in both phantom and non-phantom regions, to make a comparative analysis between the prospects of these two diagnostics in eLISA. Our analysis reveals that it is wiser and more effective to probe the null diagnostic instead of the standard EoS parameters for any possible signature of dark energy at intermediate redshift measurements like eLISA.
title: Information enforcement in learning with graphics : improving syllogistic reasoning skills
Creators: name: Dobson, Michael W.
Publisher: name: The Open University
Year: 2000

description: This thesis is an investigation into the factors that contribute to good choices among graphical systems used in teaching, and the feasibility of implementing teaching software that uses this knowledge.

The thesis describes a mathematical metric derived from a cognitive theory of human diagram processing. The theory characterises differences among representations by their ability to express information. The theory provides the factors and relationships needed to build the metric. It says that good representations are easily processed because they are more vivid, more tractable and less expressive, than poor representations.

The metric is applied to abstract systems for teaching and learning syllogistic reasoning, TARSKI'S WORLD, EULER CIRCLES, VENN DIAGRAMS and CARROLL'S GAME OF LOGIC. A rank ordering reflects the value of each system predicted by the theory and the metric. The theory, the metric and the systems are then tested in empirical studies. Five studies involving sixty-eight learners, examined the benefit of software based on these abstract systems.

Studies showed the theory correctly predicted learners' success with the circle systems and poorer performance with TARSKI'S WORLD. The metric showed small but clear differences in expressivity between the circle systems. Differences between results of the learners using the circle systems contradicted the predictions of the metric.

Learners with mathematical training were better equipped and more successful at learning syllogistic reasoning with the systems. Performance of learners without mathematical training declined after using the software systems. Diagrams drawn by learners together with video footage collected during problem solving, led to a catalogue of errors, misconceptions and some helpful strategies for learning from graphical systems.

A cognitive style test investigated the poor performance of non-mathematically trained learners. Learners with mathematics training showed serialist and versatile learning styles while learners without this training showed a holist learning style. This is consistent with the hypothesis that non-mathematically trained learners emphasise the use of semantic cues during learning and problem solving.

A card-sorting task investigated learners' preferences for parts of the graphical lexicon used in the diagram systems. Preferences for the EULER lexicon increased difficulty in explaining the system's poor results in earlier studies. Video footage of learners using the systems in the final study illustrated useful learning strategies and improved performance with EULER while individual instruction was available.

Further work describes a preliminary design for an adaptive syllogism tutor and other related work.
Provisions of the Food, Agriculture, Conservation, and Trade Act of 1990
Creators: name: Pollack, Susan
name: Lynch, Lori
name: Pollack, Susan
name: Lynch, Lori
Publisher: name: Unknown
Year: 1991
Subjects: subject: Agricultural and Food Policy
subject: Agricultural Finance
subject: Community/Rural/Urban Development
subject: Crop Production/Industries
subject: Environmental Economics and Policy
subject: Public Economics
subject: Program commodities
subject: loan rates
subject: target prices
subject: acreage reduction
subject: conservation
subject: credit
subject: agricultural trade
subject: food stamps
subject: agricultural research
subject: organic food
subject: grain quality
subject: fruit and vegetable industry
subject: crop insurance
subject: rural development

description: The Food, Agriculture, Conservation, and Trade Act of 1990 (P.L. 101-624) establishes a comprehensive framework within which the Secretary of Agriculture will administer agricultural and food programs from 1991 to 1995. This report describes provisions of the 1990 Act as amended by the Omnibus Budget Reconciliation Act of 1990 (P.L. 101-508). Provisions for all major commodity programs, such as income and price support, are reported, as well as general commodity provisions, trade, conservation, research, food stamps, fruit and vegetable marketing, organic food standards, grain quality, credit, rural development, forestry, crop insurance and disaster assistance, and global climate change provisions.
The Contact Process on Trees
Creators: name: Pemantle, Robin
Publisher: name: arXiv
Year: 2004
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60K35

description: The contact process on an infinite homogeneous tree is shown to exhibit at least two phase transitions as the infection parameter lambda is varied. For small values of lambda a single infection eventually dies out. For larger lambda the infection lives forever with positive probability but eventually leaves any finite set. (The survival probability is a continuous function of lambda, and the proof of this is much easier than it is for the contact process on d-dimensional integer lattices.) For still larger lambda the infection converges in distribution to a nontrivial invariant measure. For an n-ary tree, with n large, the first of these transitions occurs when lambda~1/n and the second occurs when 1/2 sqrt{n}
description: 41 pages
Box- and peanut-shaped bulges. III. A new class of bulges: Thick Boxy Bulges
Creators: name: Luetticke, R.
name: Pohlen, M.
name: Dettmar, R. -J.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Inspecting all 1224 edge-on disk galaxies larger than 2' in the RC3 on DSS images we have found several galaxies with extraordinary bulges meeting two criteria: They are box shaped and large in respect to the diameters of their galaxies. These bulges are often disturbed, show frequently prominent irregularities and asymmetries, and some possess possible merger remnants or merging satellites. For these bulges we have introduced the term "Thick Boxy Bulges" (TBBs). About 2% of all disk galaxies (S0-Sd), respectively 4% of all galaxies with box- and peanut-shaped (b/p) bulges, belong to this class of galaxies. Using multicolour CCD and NIR data we have enlarged and followed up our sample of nearly 20 galaxies with a TBB. The disturbed morphology of a large fraction of these galaxies shows that many of the TBB galaxies are not dynamically settled. For the TBBs the extent of the box shape seems to be too large to result from a normal bar potential. Therefore we conclude that two classes of b/p bulges exist with different origins. While most (~96%) b/p bulges can be explained by bars alone, the extended boxy structures of TBBs result most likely from accreted material by infalling satellite companions (soft merging).
description: LaTeX, 14 pages, 19 figures, accepted to be published in A&A. Figs. 5, 6, 7, 8, 9, 12 and 14 are available as jpg-files
Romantic triangles: author–publisher–reader relations in early nineteenth century British literary magazines, with particular reference to the familiar essays of Charles Lamb, William Hazlitt and Thomas De Quincey
Creators: name: Skelton-Foord, Christopher J.
Publisher: name: Loughborough University
Year: 2021
Subjects: subject: 89999 Information and Computing Sciences not elsewhere classified
subject: FOS: Computer and information sciences

description: Romantic triangles: author–publisher–reader relations in early nineteenth century British literary magazines, with particular reference to the familiar essays of Charles Lamb, William Hazlitt and Thomas De Quincey
“Piano Triennale degli Investimenti dello "Istituto Nazionale di Astrofisica" Triennio 2018-2020 Relazione Illustrativa.
Creators: name: DE FILIPPIS, LIANA
name: PORTA, FRANCESCA ROMANA
name: BARTONE, ELISABETTA
name: RAGO, Matteo
name: BELLASSAI, Giancarlo
name: DI CICCO, Nicola
name: INAMO, DAVIDE
name: LIGGIO, Giovanni
name: MIGLIETTA, Luciano
name: PACINELLI, Lucio Primo
name: MATTANA, Simone
Publisher: name: O.A. Capodimonte
Year: 2021

description: Il rapporto tecnico ha la finalità di definire il quadro delle operazioni di acquisto e/o di vendita di immobili programmate per il triennio 2018-2020 dallo "Istituto Nazionale di Astrofisica", basata sui riscontri ottenuti dall’indagine promossa con nota indirizzata ai Direttori e ai Responsabili Amministrativi delle “Strutture di Ricerca”, del 13 dicembre 2017, numero 6089. Tale definizione risponde alle disposizioni normative di cui all’articolo 12, comma 1, del Decreto-Legge del 6 luglio 2011, convertito, numero 98, con modificazioni, dalla Legge del 15 luglio 2011, numero 111.
Improving ITU-R Rain Attenuation Model for HAPS Earth-Space Link
Creators: name: Assadeq Abolhaoshat Mansour Albendag
Publisher: name: figshare
Year: 2020
Subjects: subject: 100501 Antennas and Propagation
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Rain attenuation can have a high impact on the serviceavailability of radio communication systems especially thatoperate in the Ka-band where the rain attenuation is 10 timeslarger than at C-band. Achieving a high availability of services inadvanced HAPS link design requires an extensive knowledgeabout the radio channel behavior. In order to predict preciselythe rain attenuation for a certain location, accurate environmentcharacteristics estimation is required because it is geographicallydependent. This paper presents an analytical model that is able topredict the earth-space rain attenuation when the signal path iseither completely or partially affected by the rain. It is based onthe empirical ITU-R model. The frequency of the predicted signalhas been carried out in this study is 31 GHz and the specificattenuation was evaluated using power law approximation. Therelationship between the rain cell size and the attenuation iscompared for different times exceeded in an average year, forexample, a 1 km diameter rain cell size, the attenuation is about -43 dB for 0.01% availability. Using this comparison it is deducedthat the amount of attenuation will be doubled as the cell size ofthe rain increases
Diquark-Antidiquark with open charm in QCD sum rules
Creators: name: Nielsen, M.
name: Matheus, R. D.
name: Navarra, F. S.
name: Bracco, M. E.
name: Lozea, A.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Using the QCD sum rule approach we investigate the possible four-quark structure of the recently observed charmed scalar mesons $D_0^{0}(2308)$ (BELLE) and $D_0^{0,+}(2405)$ (FOCUS) and also of the very narrow $D_{sJ}^{+}(2317)$, firstly observed by BABAR. We use diquak-antidiquark currents and work to the order of $m_s$ in full QCD, without relying on $1/m_c$ expansion. Our results indicate that a four-quark structure is acceptable for the resonances observed by BELLE and BABAR: $D_0^{0}(2308)$ and $D_{sJ}^{+}(2317)$ respectively, but not for the resonances observed by FOCUS: $D_0^{0,+}(2405)$.
description: 6 pages, 5 eps figures; Contribution to the 'Workshop on Light-Cone QCD and Nonperturbative Hadron Physics 2005 (LC2005)', Cairns-Australia
Formal power series arising from multiplication of quantum integers
Creators: name: Nathanson, Melvyn B.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Number Theory (math.NT)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 30B12, 81R50, 11B13

description: For the quantum integer [n]_q = 1+q+q^2+... + q^{n-1} there is a natural polynomial multiplication such that [mn]_q = [m]_q \otimes_q [n]_q. This multiplication is given by the functional equation f_{mn}(q) = f_m(q) f_n(q^m), defined on a sequence {f_n(q)} of polynomials such that f_n(0)=1 for all n. It is proved that if {f_n(q)} is a solution of this functional equation, then the sequence {f_n(q)} converges to a formal power series F(q). Quantum mulitplication also leads to the functional equation f(q)F(q^m) = F(q), where f(q) is a fixed polynomial or formal power series with constant term f(0)=1, and F(q)=1+\sum_{k=1}^{\infty}b_kq^k is a formal power series. It is proved that this functional equation has a unique solution F(q) for every polynomial or formal power series f(q). If the degree of f(q)is at most m-1, then there is an explicit formula for the coefficients b_k of F(q) in terms of the coefficients of f(q) and the m-adic representation of k. The paper also contains a review of convergence properties of formal power series with coefficients in an arbitrary field or integeral domain.
description: 27 pages, LaTex
What role for regulation? : The case of groundwater governance on the Gulf and San Juan Islands
Creators: name: Cohen, Alice
Publisher: name: University of British Columbia
Year: 2011

description: This thesis addresses the following research question: What is the role of regulation in the on-the-ground management of groundwater resources? In answering this question, the thesis used the case study of the Gulf and San Juan islands in the Strait of Georgia. The archipelago is divided by an international boundary, with the Gulf Islands in British Columbia and the San Juan Islands in Washington. The two groups of islands are heavily groundwater dependent and are climatologically and hydrogeologically similar, yet islands in each jurisdiction address their water issues through two very different water management frameworks. Groundwater is a salient issue on either side of the border, and biophysical conditions and demographic pressures lead to regular summer water shortages and saltwater intrusion. This study used two primary methods to address the research question. The first was a comprehensive legislative review of applicable legislation and regulation in each jurisdiction; this review would suggest that the different management frameworks would lead to different management practices. However, the second method - interviews - shows that the islands share similar management challenges and that groundwater is managed similarly on both sides of the border despite these different regulatory frameworks. Examples of similar management practices include unregulated private wells, local governmental support for rainwater harvesting, bulk water hauling, and navigation of the persistent challenges associated with real estate development and groundwater use. The research generated the hypothesis that local factors (including biophysical characteristics, economic priorities, and community culture and values) are equal or greater drivers of local groundwater management than formal governance frameworks due to the frequent absence, inappropriateness, and lack of enforcement of a significant number of applicable regulations. The final chapter of the thesis discusses the possible implications of this hypothesis for water governance more generally and offers recommendations to policy-makers.
Approvazione, con aggiornamento, del “Programma Triennale Lavori Pubblici dello "Istituto Nazionale di Astrofisica" per il Triennio 2018-2020 e dell’"Elenco dei Lavori” 2018.
Creators: name: RAGO, Matteo
name: PORTA, FRANCESCA ROMANA
name: BARTONE, ELISABETTA
name: DE FILIPPIS, LIANA
name: BELLASSAI, Giancarlo
name: DI CICCO, Nicola
name: INAMO, DAVIDE
name: LIGGIO, Giovanni
name: MIGLIETTA, Luciano
name: PACINELLI, Lucio Primo
name: MATTANA, Simone
Publisher: name: O.A. Torino
Year: 2021

description: Il rapporto tecnico ha la finalità di definire gli interventi da inserire nello “Schema di Programma dei Lavori Pubblici 2018-2020", in particolare nello “Elenco dei Lavori” per l’anno 2018, selezionati in considerazione delle priorità stabilite per Legge in relazione alle disponibilità economiche autonome delle Strutture di Ricerca e della proposta di assegnazione dei fondi destinati ad interventi di edilizia nel Bilancio Annuale di Previsione per l'Esercizio Finanziario 2017.
A Molecular Micromaser
Creators: name: Search, Chris P.
name: Zhang, Weiping
name: Meystre, Pierre
Publisher: name: arXiv
Year: 2003
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We show that photoassociation of fermionic atoms into bosonic molecules inside an optical lattice can be described using a Jaynes-Cummings Hamiltonian with a nonlinear detuning. Using this equivalence to the Jaynes-Cummings dynamics, we show how one can construct a micromaser for the molecular field in each lattice site.
Ideal circle microswimmers in crowded media
Creators: name: Chepizhko, Oleksandr
name: Franosch, Thomas
Publisher: name: arXiv
Year: 2020
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Microswimmers are exposed in nature to crowded environments and their transport properties depend in a subtle way on the interaction with obstacles. Here, we investigate a model for a single ideal circle swimmer exploring a two-dimensional disordered array of impenetrable obstacles. The microswimmer moves on circular orbits in the freely accessible space and follows the surface of an obstacle for a certain time upon collision. Depending on the obstacle density and the radius of the circular orbits, the microswimmer displays either long-range transport or is localized in a finite region. We show that there are transitions from two localized states to a diffusive state each driven by an underlying static percolation transition. We determine the non-equilibrium state diagram and calculate the mean-square displacements and diffusivities by computer simulations. Close to the transition lines transport becomes subdiffusive which is rationalized as a dynamic critical phenomenon.
description: 10 pages, 7 figures
Comment on "microscopic theory of network glasses"
Creators: name: Micoulaut, Matthieu
name: Boolchand, Punit
Publisher: name: arXiv
Year: 2003
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: Calorimetric experiments on network glasses provide information on the ergodicity (landscape) temperature of supercooled liquids and can be compared with a recent theory developed by Hall and Wolynes [PRL90, 085505 (2003)]
description: 2 pages, 2 EPS figures RevTEX. to appear in Physical review Letters
FULMEKIOLA SERRATA KOBUS (THYSANOPTERA:TEREBRANTIA) ON SUGAR CANES IN BARBADOS
Creators: name: Alleyne, E. H.
name: Alleyne, E. H.
Publisher: name: Unknown
Year: 1982
Subjects: Crop Production/Industries

description: In late 1980, sugarcane in Barbados was attacked by thrips for the first time. Indications are that the insects were introduced by the winds of hurricane "Allen" in August 1980. Island-wide surveys conducted in 1980-31 on ten popular varieties of sugarcane indicated that B62163 and B63118 suffered substantial early damage. In 1981-1982 ratoons of these two varieties were surveyed and population levels were generally higher. The two varieties together comprise over 70% of all sugarcane grown locally. The thrip shows a marked preference for young plants. All stages of the life cycle of the insect occur on the leaves of sugar canes, with the vast majority of the insect population being found in the rolled central spindle of young leaves. Population levels are reduced significantly by heavy rains as well as by soil applications of carbofuran, disulfoton and isozaphos at rates of 1.12 and 2.24 kg/ha. No instances of parasitism or predation have so far been observed.
On Path Integrals for the High-Dimensional Brownian Bridge
Creators: name: Pemantle, Robin
name: Penrose, Mathew
Publisher: name: arXiv
Year: 2004
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: Let v be a bounded function with bounded support in R^d, d>=3. Let x,y in R^d. Let Z(t) denote the path integral of v along the path of a Brownian bridge in R^d which runs for time t, starting at x and ending at y. As t->infty, it is perhaps evident that the distribution of Z(t) converges weakly to that of the sum of the integrals of v along the paths of two independent Brownian motions, starting at x and y and running forever.Here we prove a stronger result, namely convergence of the corresponding moment generating functions and of moments. This result is needed for applications in physics.
description: 13 pages
THE BIOLOGY AND VARIETAL PREFERENCES OF THE LACE BUG CORYTHUCHA MOPPiLU fOSBOPMF & DRAKE) (TINGIDAE) ON SWEET POTATOES IN BARBADOS
Creators: name: Jones, J. E.
name: Jones, J. E.
Publisher: name: Unknown
Year: 1982
Subjects: Crop Production/Industries

description: Corythucha morrilli (Osborne & Drake) sucks vascular fluids from leaves of Ipomoea batatas (L.) and causes severe browning and defoliation. Under greenhouse conditions the entire life cycle from egg through five aggregated instars is completed on the plant in nineteen days. Female longevity is about thirty-five days, during which time about 400 eggs are laid. Twenty-one varieties of I. batatas screened against the pest have shown different levels of susceptibility.
CABBAGE PESTS AND THEIR NATURAL ENEMIES IN BARBADOS, W.I.
Creators: name: Alam, M. M.
name: Alam, M. M.
Publisher: name: Unknown
Year: 1982
Subjects: Crop Production/Industries

description: In Barbados, some 20 insects attack cabbage. Of these, only 5, i.e. diamond-back moth, Plutella xylostella, cabbage semi-looper, Trichoplusia ni and Pseudoplusia includens, cabbage bud-worm, Hellula phidilealis and cabbage white-butterfly, Ascia monuste monuste, were of economic importance. A large complex of indigenous natural enemies present in Barbados does not keep the pests below economic levels. As a result exotic natural enemies were introduced from India, Pakistan and the Caribbean Islands. Amongst the parasites introduced against J?. xylostella, Cotesia (=Apanteles) plutellae and Tetrastichus sokolowskii became established. The former parasite is widespread. The annual range of parasitism, from 1971-80 was 17.9 to 52.2%. This parasite introduced into the Leeward and Windward Islands by the Commonwealth Institute of Biological Control (CIBC), Trinidad, and later by the Caribbean Agricultural Research and Development Institute (CARDI) is well established. X- sokolowskii, an indigenous parasite in the East Caribbean Islands, was introduced into Barbados from India, Montserrat and St. Vincent. It is established in the island, but possibly because of the heavy applications of pesticides, has failed to achieve high populations. It has also been recorded as an incidental secondary parasite of C. plutellae. An egg-larval parasite, Litomastix sp. (truncatellum group), introduced against Trichoplusia/Pseudoplusia, from India, is very well established, attacking an average of 25.8% larvae on cabbage, 79.4% on tomato, 78.8% on sweet potato, 33.3% on okra, 58% on beans and 25% on cucumbers. Hellula phidilealis, also attacks the buds and pods of Cleome spp. and Gynandropsis gynandra in Barbados, the East Caribbean Islands and Guyana (South America). The pest population and the parasite complex on these plants was greater and more consistent than that on crucifers, suggesting that Cleome and Gynandropsis are the primary host plants. The natural enemies recorded were: Apanteles spp., Chelonus sp. nr. mexicanus, Eiphosoma annulatum, Bracon sp., hebetor and an unidentified Tachinid, which are all first records from this host. Cabbage white-butterfly, Ascia monuste monuste, a migratory pest, broods freely on Cleome spp. and G. gynandra in Barbados and the East Caribbean Islands, and also feeds on Lepidium virginicum in Barbados. A Tachinid, Phorocera sp. ?parviteres attacked 8% and 14% larvae during May and November 1973 respectively, whereas a pupal parasite, Brachymeria ovata, attacked an average of 36.4% pupae on B. oleracea in 1979, 50.3% on C. spinosa and 35.2% on £. viscosa in 1980. During outbreaks, some 93.7% larvae on B. oleracea and 94% on C. viscosa were destroyed by various predators. In the wet season, about 20% larvae and 95% pupae were killed by a polyhedrosis virus. The egg-masses of Spodoptera spp. were parasitised by Telenomus remus. The average parasitism recorded was 58.3% during 1978, 52.2% in 1979 and 41.1% in 1980.
title: Towards an activity-oriented design method for HCI research and practice
Creators: name: Mwanza, Daisy
Publisher: name: The Open University
Year: 2002

description: During the last two decades, designing for usability has been the focus of attention when developing computer systems. However, the dynamic nature of human use of computer systems has meant that designing for 'usefulness' or 'fitness for purpose' is increasingly becoming the primary concern for systems developers. Central to this concern are issues underpinned by the social context in which a computer user operates.

Within the field of Human-Computer Interaction (HCI), this situation led to a search for appropriate theories for conceptualising these design concerns. Whilst Activity Theory has been identified as a suitable framework for conceptualising these user perspectives, the lack of a standard methodology for applying it to HCI research and practice has meant that many systems developers have failed to benefit from the richness of this framework. The objective of this thesis was therefore to develop an Activity Theory based methodology for HCI research and practice. This thesis, contributes the `Activity-Oriented Design Methodology' (AODM) both as a practical and analytical methodology for using Activity Theory within HCI design. AODM incorporates four methodological tools namely:

- The `Eight-Step-Model'
- The `Activity Notation'
- The technique of `Generating Research Questions'
- The technique of `Mapping AODM Operational Processes'

AODM tools were constructed from empirical work carried out as part of this research. Empirical analysis of work practices in two organisations was conducted for a period of two years using Activity Theory. This empirical work formed the basis for validating AODM. AODM tools support the systems design processes of gathering, analysing and communicating (through modelling) research and design insights from an Activity Theory perspective. It is argued that AODM provides a valuable practical and analytical methodology for operationalising Activity Theory within HCI so as to support early phases of systems design: namely, requirements capture and evaluation.
O(n,n) invariance and Wald entropy formula in the Heterotic Superstring effective action at first order in alpha'
Creators: name: Ortin, Tomas
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We perform the toroidal compactification of the full Bergshoeff-de Roo version of the Heterotic Superstring effective action to first orderin $α'$. The dimensionally-reduced action is given in a manifestly-O(n,n)-invariant form which we use to derive a manifestly-O(n,n)-invariant Wald entropy formula which we then use to compute the entropy of $α'$-corrected, 4-dimensional, 4-charge, static, extremal, supersymmetric black holes.
description: References and comments added. Version to be published in Journal of High Energy Physics
title: Investigation into the design of educational multimedia : video, interactivity and narrative
Creators: name: Stratfold, Matthew Peter
Publisher: name: The Open University
Year: 1995

description: This study critically examines the design of multimedia in education. The study begins by reviewing existing media in education and then uses a series of empirical studies to uncover, and then examine the key issues for the design of educational multimedia.

The research involves two studies. The first, a preliminary study, that identifies specific areas of interest for the research. This study looks at the existing use of an interactive video disc program for training in Price Waterhouse. The literature search, combined with the outcomes of the preliminary study, identified the areas for further research as: the use of video, forms of interaction, and the role of narrative. The main study examines these areas using two phases. The first phase analyses three treatments of the same educational text, on linear video, multimedia, and structured multimedia, each treatment maintaining the same content and narrative structure, but differing in presentation and control. The second phases builds on the results of the first with the creation and analysis of an interactive multimedia program that takes advantage of the identified strengths of multimedia, and specifically tackles problems found in the first phase. Qualitative data collection techniques are used in both phases, and form the basis of the findings.

The findings are presented as implications for multimedia design, and discuss the use and development of narrative and grammar in multimedia, as well as the importance of carefully designed user interaction and goal definition.
Local Characteristics, Entropy and Limit Theorems for Spanning Trees and Domino Tilings via Transfer-Impedances
Creators: name: Burton, Robert
name: Pemantle, Robin
Publisher: name: arXiv
Year: 2004
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 60C05, 60K35

description: Let G be a finite graph or an infinite graph on which Z^d acts with finite fundamental domain. If G is finite, let T be a random spanning tree chosen uniformly from all spanning trees of G; if G is infinite, known methods show that this still makes sense, producing a random essential spanning forest of G. A method for calculating local characteristics (i.e. finite-dimensional marginals) of T from the transfer-impedance matrix is presented. This differs from the classical matrix-tree theorem in that only small pieces of the matrix (n-dimensional minors) are needed to compute small (n-dimensional) marginals. Calculation of the matrix entries relies on the calculation of the Green's function for G, which is not a local calculation. However, it is shown how the calculation of the Green's function may be reduced to a finite computation in the case when G is an infinite graph admitting a Z^d-action with finite quotient. The same computation also gives the entropy of the law of T. These results are applied to the problem of tiling certain lattices by dominos - the so-called dimer problem. Another application of these results is to prove modified versions of conjectures of Aldous on the limiting distribution of degrees of a vertex and on the local structure near a vertex of a uniform random spanning tree in a lattice whose dimension is going to infinity. Included is a generalization of moments to tree-valued random variables and criteria for these generalized moments to determine a distribution.
description: 50 pages
Solutions of max-plus linear equations and large deviations
Creators: name: Akian, Marianne
name: Gaubert, Stephane
name: Kolokoltsov, Vassili
Publisher: name: arXiv
Year: 2005
Subjects: subject: Probability (math.PR)
subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 60F10 (Primary); 93E20; 06A15 (Secondary)

description: We generalise the Gartner-Ellis theorem of large deviations theory. Our results allow us to derive large deviation type results in stochastic optimal control from the convergence of generalised logarithmic moment generating functions. They rely on the characterisation of the uniqueness of the solutions of max-plus linear equations. We give an illustration for a simple investment model, in which logarithmic moment generating functions represent risk-sensitive values.
description: 6 pages