cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Who is the average individual investor? Numerical skills and implications for accounting research
Creators: name: Krische, Susan D.
Publisher: name: American University
Year: 2023

description: Behavioral research in financial accounting often aims to address issues relevant to individual, nonprofessional investors, citing the importance of individual investors to capital markets or regulators’ concerns for the “average” investor. Analyzing national samples of financial capability skills in the United States along with a relatively large sample of participants recruited from Amazon’s Mechanical Turk platform (MTurk; n>2,000), this research first examines investors’ demographic characteristics and numerical skills relative to non-investors, thus contributing to our understanding of the “average” individual investor’s skills and perceptions and to our understanding of the range of skills and perceptions in the broader individual investor population. A sample of three extant accounting research experiments are then replicated with the MTurk participant pool; however, these replicated results tend to be driven by participants with investment experience and higher numerical skills. These findings suggest that limiting the pool of participants in the original research increases the power of the statistical tests, but doing so may overstate the generalizability of the findings to less sophisticated investor populations. This research emphasizes the need for careful consideration of the research motivation and the potential match between the applied theory and the population of interest in empirical research.
Time optimal control based on classification of quantum gates
Creators: name: Sun, Bao-Zhi
name: Fei, Shao-Ming
name: Jing, Naihuan
name: Li-Jost, Xianqing
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study the minimum time to implement an arbitrary two-qubit gate in two heteronuclear spins systems. We give a systematic characterization of two-qubit gates based on the invariants of local equivalence. The quantum gates are classified into four classes, and for each class the analytical formula of the minimum time to implement the quantum gates is explicitly presented. For given quantum gates, by calculating the corresponding invariants one easily obtains the classes to which the quantum gates belong. In particular, we analyze the effect of global phases on the minimum time to implement the gate. Our results present complete solutions to the optimal time problem in implementing an arbitrary two-qubit gate in two heteronuclear spins systems. Detailed examples are given to typical two-qubit gates with or without global phases.
description: 12 pages, 0 figures
Complexity of Random Energy Landscapes, Glass Transition and Absolute Value of Spectral Determinant of Random Matrices
Creators: name: Fyodorov, Yan V.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Finding the mean of the total number N_{tot} of critical points for N-dimensional random energy landscapes is reduced to averaging the absolute value of characteristic polynomial of the corresponding Hessian. For any finite N we provide the exact solution to the problem for a class of landscapes corresponding to the "toy model" of manifolds in random environment. For N >>1 our asymptotic analysis reveals a phase transition at some critical value μ_c of a control parameter μfrom a phase with finite landscape complexity to the phase with vanishing complexity. The same value of the control parameter is known to correspond to an onset of glassy behaviour at zero temperature. Finally, we discuss a method of dealing with the modulus of the spectral determinant applicable to a broad class of problems.
description: Updated version, close to the published variant, but with a misprint in Eq.(15) corrected
Graphene-ionic liquid interfacial potential drop from DFT-MD simulations
Creators: name: Ers, Heigo
name: Lembinen, Meeri
name: Mišin, Maksim
name: Seitsonen, Ari P.
name: Fedorov, Maxim V.
name: Ivaništšev, Vladislav B.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Ionic liquids (IL) are promising electrolytes for electrochemical applications due to their remarkable stability and high charge density. Molecular dynamics simulations are essential for better understanding the complex phenomena occurring at the electrode-IL interface. In this work, we have studied the interface between graphene and 1-ethyl-3-methyl-imidazolium tetrafluoroborate IL, using density functional theory-based molecular dynamics simulations at variable surface charge densities. We have disassembled the electrical double layer potential drop into two main components: one involving atomic charges and the other - dipoles. The latter component arises due to the electronic polarisation of the surface and is related to concepts hotly debated in the literature, such as the Thomas-Fermi screening length, effective surface charge plane, and quantum capacitance.
Absentee Ballot Regimes (conference paper) : Easing Costs or Adding a Step?
Creators: name: Nagler, Jonathan
name: Leighley, Jan
Publisher: name: American University (Washington, D.C.); New York University
Year: 2023
Subjects: classificationCode: 4408
subject: Political science
subject: FOS: Political science

description: In this paper we discuss the changes in electoral laws since 1972, and the eﬀect some of those laws have had on turnout. We pay particular attention to the variation in absentee voting laws, and in particular the method of requesting the absentee ballot, across the states. We document the large increase in the availability of no-fault absentee voting since 1990. And we note that it often comes with a large price: the need to request a ballot each year. However, we ﬁnd, surprisingly, that states that allow for permanent absentee ballot status do not neccesarily achieve larger turnout than states which adopt no-fault absentee balloting but do not oﬀer permanent absentee status.
Spectral index maps of the radio halos in Abell 665 and Abell 2163
Creators: name: Feretti, L.
name: Orru', E.
name: Brunetti, G.
name: Giovannini, G.
name: Kassim, N.
name: Setti, G.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: New radio data at 330 MHz are presented for the rich clusters Abell 665 and Abell 2163, whose radio emission is characterized by the presence of a radio halo. These images allowed us to derive the spectral properties of the two clusters under study. The integrated spectra of these halos between 0.3 GHz and 1.4 GHz are moderately steep: alfa(0.3-1.4) = 1.04 and = 1.18, for A665 and A2163, respectively. The spectral index maps, produced with an angular resolution of the order of 1 arcmin, show features of the spectral index (flattening and patches), which are indication of a complex shape of the radiating electron spectrum, and are therefore in support of electron reacceleration models. Regions of flatter spectrum are found to be related to the recent merger activity in these clusters. This is the first strong confirmation that the cluster merger supplies energy to the radio halo. In the undisturbed cluster regions, the spectrum steepens with the distance from the cluster center. This is interpreted as the result of the combination of the magnetic field profile with the spatial distribution of the reacceleration efficiency, thus allowing us to set constraints on the radial profile of the cluster magnetic field.
description: Astronomy and Astrophysics, in press, 4 figures (2 in color), full gzipped version with higher quality figures at http://www.ira.cnr.it/~lferetti/SPIX/
title: Regionalist themes in 'Breton' Operas, 1850-1954: Four case studies
Creators: name: Millar, Jennifer Janice
Publisher: name: The Open University
Year: 2010

description: This thesis aims to challenge the suggestion that couleur locale, in nineteenth-century French operas which incorporated Breton themes, was merely a convenient vehicle for spectacle. It seeks to demonstrate that the deployment of regional symbolism served a variety of complex personal, psychological and socio-political needs and was complicit in the establishment of new regional and national musical identities. Four case studies are at the heart of the enquiry: Édouard Lalo's Le Roi d'Ys (1888), Joseph-Guy Ropartz's Le Pays (1912) and Sylvio Lazzari's La Lepreuse (1912) and La Tour de feu (1928). Two additional works, Giacomo Meyerbeer's Le Pardon de Ploermel  (1859) and Paul Le Flem's Magicienne de la mer (1954) frame the main study and define it aesthetically and chronologically. These works were all selected to facilitate the comparison of specific regionalist responses by both non-Breton and native Breton composers. The evaluation of the ways in which regional symbols and themes were deployed in those Breton operas refers to current identity theories and makes extensive use of relevant iconography. Whilst the musical scores are central to the enquiry, close reference is equally made to the literary sources which informed the libretti of the operas. The links between these sources, the significant folklore of the region and the regionally-canonical works of Hersart de la Villemarqué, Émile Souvestre and Anatole Le Braz are assiduously traced. The case studies reveal hitherto undetected or unacknowledged libretti sources; however the interrogation of the operas by Sylvio Lazzari also records previously-undiscovered musical borrowings which have significance for the regional symbolism which his works project. Finally, the conclusion sets the evidence from the case studies in the context of the role of Breton symbolism in the active preservation or invention of a unique regional heritage and, paradoxically, in the affirmation of an overarching national identity. It demonstrates conclusively that operas which consciously deployed Breton couleur locale thereby achieved distinct artistic and psychological goals and continued to evolve in response to their shifting socio-political contexts.
Cytotoxic compounds from the stems of Diospyros ehretioides and their bioactivity
Creators: name: Pattamaporn Wosawat
name: Thanaset Senawong
name: Nattawut Suchaichit
name: Natcha P. Suchaichit
name: Kwanjai Kanokmedhakul
name: Somdej Kanokmedhakul
name: Panawan Moosophon
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Space Science
subject: Pharmacology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer

description: A new (naphthalenyl)methyl acetate, (1,4,5-trimethoxynaphthalen-2-yl)methyl acetate (1) and (±)-4,5-dihydroxy-2-methyltetralone (2) were isolated together with five lupane triterpenes (3–7), naphthoquinone derivatives (8–13), coumarins (14 and 15) and a vanillic acid (16) from the stems of Diospyros ehretioides. Their structures were established through spectroscopic analysis, IR, 1D and 2D NMR. Both 1 and 2 displayed significant cytotoxicity against three cancer cell lines including HeLa, HCT116 and MCF-7, with IC50 values in the range of 5.05–15.90 µg/mL, while 16 exhibited moderate cytotoxicity against HeLa and HCT116 cell lines and was not toxic to Vero cells.
Influence of carrier-carrier and carrier-phonon correlations on optical absorption and gain in quantum-dot systems
Creators: name: Lorke, M.
name: Nielsen, T. R.
name: Seebeck, J.
name: Gartner, P.
name: Jahnke, F.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A microscopic theory is used to study the optical properties of semiconductor quantum dots. The dephasing of a coherent excitation and line-shifts of the interband transitions due to carrier-carrier Coulomb interaction and carrier-phonon interaction are determined from a quantum kinetic treatment of correlation processes. We investigate the density dependence of both mechanisms and clarify the importance of various dephasing channels involving the localized and delocalized states of the system.
description: 12 pages, 10 figures
Dinocoris nigrodecoratus Becker & Grazia 1985
Creators: name: Carrenho, Renan
name: Rodrigues, Higor D. D.
name: Lima, Adriana Carneiro de
name: Schwertner, Cristiano F.
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Pentatomidae
Dinocoris
Dinocoris nigrodecoratus

description: Dinocoris nigrodecoratus Becker & Grazia, 1985
 Dinocoris nigrodecoratus Becker & Grazia, 1985: 105-106, figs. 3, 16, 29, 50, 51, 67, 83, 90.
 Holotype: ♀, pinned; [Brasil], PA [Pará], Santarém, Taperinha, 29.XII.1967 - 09.I.1968, Exp [edição] Perm [amente]. Amaz [onica].
description: Published as part of Carrenho, Renan, Rodrigues, Higor D. D., Lima, Adriana Carneiro de & Schwertner, Cristiano F., 2020, Type specimens of true bugs (Hemiptera: Heteroptera) housed in the Museu de Zoologia da Universidade de São Paulo, Brazil, pp. 1-16 in Papéis Avulsos de Zoologia 60 on page 13, DOI: 10.11606/1807-0205/2020.60.17, http://zenodo.org/record/4614885
New Federal Policies and Programs for Food Safety
Creators: name: Crutchfield, Stephen R.
name: Crutchfield, Stephen R.
Publisher: name: Unknown
Year: 1999
Subjects: Agricultural and Food Policy
Food Consumption/Nutrition/Food Safety

description: The United States excels at producing an abundant supply of safe, nourishing, and affordable food. However, some recent well-publicized incidents, such as the contamination of hamburgers and apple juice with the E. coli O157:H7 bacterium and contamination of frozen, sugared strawberries with the hepatitis A virus, have led to increased public concern about the possibility of illnesses caused by foods. The Government at all levels and the private sector share this concern. Currently, at the Federal level, regulatory authority over food safety is divided among several agencies. The Department of Agriculture's Food Safety and Inspection Service (FSIS) is responsible for inspecting domestic and imported livestock and poultry products, and egg products (such as pasteurized eggs). The Department of Health and Human Services' Food and Drug Administration (FDA) is responsible for other fresh and processed foods, including eggs, fresh produce, and imported foods other than meat and poultry. On a fee-for-service basis, the Department of Commerce's National Marine Fisheries Service (NMFS) may, at industry's request, conduct inspections of seafood harvesters and producers for quality; however, FD A has responsibility for seafood inspection. The Environmental Protection Agency (EPA) is responsible for regulating agricultural chemicals used in farm production and establishing tolerances for pesticides. FDA enforces those tolerances. FDA regulates drugs and feed additives used in food producing animals.
Scaling Confirmation of the Thermodynamic Dislocation Theory
Creators: name: Langer, J. S.
name: Le, K. C.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We show that the thermodynamic dislocation theory (TDT) predicts a scaling relation between stresses, strain rates, and temperatures for steady-state deformations of crystalline solids, and that this relation is accurately obeyed by a wide range of experimental data for both aluminum and copper. Unlike conventional phenomenological dislocation theories, the TDT is based on the second law of thermodynamics. Its success implies that descriptions of solid deformation that are not based on the statistical mechanics of nonequilibrium processes cannot be relied upon to be predictive. Thus there is an urgent need -- and a new opportunity -- to revitalize this central part of materials physics.
description: arXiv admin note: text overlap with arXiv:2003.03209
Assessing the Costs and Benefits of Pathogen Reduction
Creators: name: Crutchfield, Stephen R.
name: Buzby, Jean C.
name: Roberts, Tanya
name: Ollinger, Michael
name: Crutchfield, Stephen R.
name: Buzby, Jean C.
name: Roberts, Tanya
name: Ollinger, Michael
Publisher: name: Unknown
Year: 1999
Subjects: Agricultural and Food Policy
Food Consumption/Nutrition/Food Safety
Health Economics and Policy

description: There has been increasing concern in recent years over the human health risks posed by microbial pathogens-bacteria, parasites, fungi, and viruses-in the food supply. Each year an estimated 6 million to 33 million cases of foodborne disease occur in the United States, and up to 9,000 people die. USDA's Economic Research Service (ERS) has estimated that diseases caused by seven major pathogens alone may cause between $6.6 billion and $37.1 billion annually in medical costs and productivity losses. These estimated social costs of foodborne illness, while suggesting the extent of the burden of these illnesses on society, are only a starting point. Policymakers are also interested in how efforts to prevent foodborne illness can reduce this burden, and the relationship between the benefits of safer food and the costs of achieving this goal. Ideally, the costs of regulations and other efforts to control foodborne disease and to reduce pathogens will be less than the benefits of reduced medical costs and productivity losses. Most government regulations have some sort of economic effect on producers and consumers. Regulations governing how foods are produced can raise production costs. Regulations require resource commitments, which, in turn, may raise costs and food prices. On the other hand, regulations that improve the safety of the food supply benefit consumers by reducing the number and/ or severity of foodborne illnesses. Economic analysis can play an important role in the public decisionmaking process by identifying and comparing the benefits and costs of food safety policies. Currently, all regulations with an annual economic impact of over $100 million are required by Executive Order to have undergone a cost-benefit analysis to show that the expected benefits of the regulation exceed the expected costs. The cost-benefit analysis will also explain why the planned regulatory alternative is preferred. One such regulation is the 1996 Hazard Analysis and Critical Control Points (HACCP) pathogen reduction rule for livestock and poultry slaughter and processing establishments. ERS analyzed this rule to estimate the economic costs and benefits of this new approach to meat and poultry inspection
Dinocoris reticulatus Becker & Grazia 1985
Creators: name: Carrenho, Renan
name: Rodrigues, Higor D. D.
name: Lima, Adriana Carneiro de
name: Schwertner, Cristiano F.
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Pentatomidae
Dinocoris
Dinocoris reticulatus

description: Dinocoris reticulatus Becker & Grazia, 1985
 Dinocoris reticulatus Becker & Grazia, 1985: 99-100, figs. 1, 7, 20, 33, 43, 58.
 Holotype: ♂, pinned with genitalia in a microvial;[Brazil], [Minas Gerais], Lagoa Santa, 28.I.1963, N. Papavero col.
description: Published as part of Carrenho, Renan, Rodrigues, Higor D. D., Lima, Adriana Carneiro de & Schwertner, Cristiano F., 2020, Type specimens of true bugs (Hemiptera: Heteroptera) housed in the Museu de Zoologia da Universidade de São Paulo, Brazil, pp. 1-16 in Papéis Avulsos de Zoologia 60 on page 13, DOI: 10.11606/1807-0205/2020.60.17, http://zenodo.org/record/4614885
Absentee Ballot Regimes (conference paper) : Easing Costs or Adding a Step?
Creators: name: Nagler, Jonathan
name: Leighley, Jan
Publisher: name: American University
Year: 2023

description: In this paper we discuss the changes in electoral laws since 1972, and the eﬀect some of those laws have had on turnout. We pay particular attention to the variation in absentee voting laws, and in particular the method of requesting the absentee ballot, across the states. We document the large increase in the availability of no-fault absentee voting since 1990. And we note that it often comes with a large price: the need to request a ballot each year. However, we ﬁnd, surprisingly, that states that allow for permanent absentee ballot status do not neccesarily achieve larger turnout than states which adopt no-fault absentee balloting but do not oﬀer permanent absentee status.
Extending the QCD Perturbative Domain to Higher Energies
Creators: name: Ciafaloni, Marcello
Publisher: name: arXiv
Year: 2003
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: After a brief introduction to low-x QCD and to resummation approaches, I illustrate the predictions for the gluon Green function and splitting function of a recent renormalization-group improved small-x resummation scheme. I argue, on this basis, that the range of validity of perturbative calculations is considerably extended in rapidity with respect to leading log expectations. The perturbative high-energy exponents are predicted in a phenomenologically interesting range, and significant preasymptotic effects are found. In particular, the splitting function shows a shallow dip in the moderate-x region, followed by the expected small-x power increase.
description: Talk at the International Workshop on QCD: QCD@Work2003 - International Workshop on QCD, Conversano, Italy; 7 pages, 4 figures. 14-18 June 2003
title: A critical examination of government policy addressing early school leaving
Creators: name: Morrissey, Seamus
Publisher: name: The Open University
Year: 2010

description: The issue of early school leaving is currently viewed as a particular concern in Galway City, Ireland. Despite national policy and numerous programmes, early school leaving continues to be prevalent. The central focus of this study is to critically examine government policy addressing early school leaving. Through qualitative methodologies, primary data was collected from students, teachers, principals and education personnel. The student voice was viewed as a significant source of data within the study. Thirty-two semi-structured interviews were completed; sixteen of which were with early school leavers. These early school leavers, defined as having left the school system prior to completing the Leaving Certificate, were aged between fourteen and twenty-one. Sixteen professionals, including teachers and principals, working with schools in Galway City were interviewed. The study identifies disaffection and early school leaving as significant issues within the Irish education system. Disaffection, while complex, is identifiable among students through aggressive behaviour, disrupted attendance, poor relationships with teachers, lack of interest and non-engagement in academic processes. The research provides evidence that in some cases the education system, rather than alleviating disaffection, is actively perpetuating disaffection which contributes to early school leaving. Furthermore, through the implementation of Grounded Theory, the contextual issues of socio-economic within families and communities emerged. The research established that current policy aimed at tackling early school leaving is working on the periphery of schools rather than affecting change within schools. The research also highlighted the existence of two original factors which are contributing to the issue of disaffection: 1) Tension among key constituents of the education system and 2) A 'culpability culture' among those who contribute to disaffection and the issue of early school leaving. Recommendations are outlined, including the need for a greater emphasis on inclusive policy and practice within the Irish education system.
Search for Chargino and Neutralino Production at sqrt(s) = 192-209 GeV at LEP
Creators: name: The OPAL Collaboration
name: Abbiendi, G.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Approximately 438 pb-1 of e+e- data from the OPAL detector, taken with the LEP collider running at centre-of-mass energies of 192-209 Gev, are analyzed to search for evidence of chargino pair production, e+e- -> tilde chi^+_1 tilde chi^-_1, or neutralino associated production, e+e- -> tilde chi^0_2 tilde chi^0_1. Limits are set at the 95% confidence level on the product of the cross-section for the process e+e- -> tilde chi^+_1 tilde chi^-_1 and its branching ratios to topologies containing jets and missing energy, of jest with a lepton and missing energy, and on the product of the cross-section for e+e- -> tilde chi^0_2 tilde chi^0_1 and its branching ratio to jets. R-parity conservation is assumed throughout this paper. When these results are interpreted in the context of the Constrained Minimal Supersymmetric Standard Model, limits are also set on the masses of the tilde chi^+-_1, tilde chi^0_1 and tilde chi^0_2, and regions of the parameter space of the model are ruled out. Nearly model-independent limits are also set at the 95% confidence level on sigma(e+e- -> tilde chi^+_1 tilde chi^-_1) with the assumption that each chargino decays via a W boson, and on sigma(e+e- -> tilde chi^0_2 tilde chi^0_1) with the tilde chi^0_2 assumed to decay via a Z^0.
description: 33 pages, 13 figures, Submitted to Eur Phys J. C
Tensor products with bounded continuous functions
Creators: name: Williams, Dana P.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Operator Algebras (math.OA)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: Primary: 46L06; Secondary: 54D35, 54D20

description: We study that natural inclusions $C^b(X) \tensor A$ into $C^b(X,A)$ and $C^b(X, C^b(Y))$ into $C^b(X \times Y)$. In particular, excepting trivial cases, both these maps are isomorphisms only when $X$ and $Y$ are pseudocompact. This implies a result of Glicksberg showing that the Stone-Cech compactificiation $β(X \times Y)$ is naturally identified with $βX \times βY$ if and only if $X$ and $Y$ are pseudocompact.
description: 9 Pages, LaTeX
A COMPARISON OF CERTAIN DECISION-MAKING TECHNIQUES UNDER RISK - AN EMPIRICAL INVESTIGATION OF MAIZE CULTIVAR SELECTION
Creators: name: Van Zyl, J.
name: Groenewald, J. A.
name: Van Zyl, J.
name: Groenewald, J. A.
Publisher: name: Unknown
Year: 1986
Subjects: Agricultural and Food Policy
Crop Production/Industries
Risk and Uncertainty

description: Results obtained with stochastic dominance, linear risk-programming (MOTAD), regression line evaluation and expected value calculations on maize-cultivar selection under varying circumstances were compared. Maize cultivar trial results of four localities over 14 years were used. Two levels of management were included. Cultivar selections obtained by the different methods show a remarkable similarity. This is probably the result of the relative normal distribution in cultivar gross margins. The largest single disadvantage of cultivar selection by adaptation regressions and expected value calculations is that it considers only the value of the gross margin and largely ignores the variance. This can lead to selection of ill-adapted cultivars. Stochastic dominance and MOTAD take both the expected value and variance into consideration. MOTAD is particularly useful as it invariably selects cultivar combinations.
ECONOMICALLY OPTIMAL MAIZE CULTIVAR SELECTION UNDER CONDITIONS OF RISK
Creators: name: Van Zyl, J.
name: Groenewald, J. A.
name: Van Zyl, J.
name: Groenewald, J. A.
Publisher: name: Unknown
Year: 1986
Subjects: Crop Production/Industries
Risk and Uncertainty

description: A representative farm in the Western Transvaal was synthesised. The degree to which risk should be avoided was determined by simulation of general characteristics of the farm and controlled parameters, including four combinations of maize cultivar strategies, two management levels, three combinations of inflation and interest rates and two asset/liability ratios. Cultivar strategies vary from one with a relatively high expected gross margin and associated high variation in gross margin to one with a relatively low expected gross margin and small variation therein. Cultivar strategies have a highly significant effect on accumulated net worth. The effect of cultivar strategy is not influenced by the various inflation conditions or asset/liability ratios. Optimal cultivar strategy limits losses in poor years, but simultaneously produces a big enough expected gross margin to compete with other strategies. Farmers with liquidity problems should adopt a conservative strategy. Only in years without liquidity problems should a cultivar strategy with a higher expected yield and at the same time a higher probability of a loss be followed.
Passive Quantum Erasure for Neutral Kaons
Creators: name: Bramon, A.
name: Garbarino, G.
name: Hiesmayr, B. C.
Publisher: name: arXiv
Year: 2004
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Quantum marking and quantum erasure are discussed for the neutral kaon system. Contrary to other two-level systems, strangeness and lifetime of a neutral kaon state can be alternatively measured via an "active" or a "passive" procedure. This offers new quantum erasure possibilities. In particular, the operation of a quantum eraser in the "delayed choice" mode is clearly illustrated.
description: 12 pages, contribution to the Festschrift in honor of Prof. Jose Adolfo de Azcarraga for his 60th birthday, Salamanca (Spain), June 9-11, 2003
Plotting regression coefficients and other estimates
Creators: name: Jann, Ben
name: Jann, Ben
Publisher: name: Unknown
Year: 2014
Subjects: subject: Research Methods/ Statistical Methods
subject: coefplot, marginsplot, margins, regression plot, coefficients plot, ropeladder plot

description: Graphical display of regression results has become increasingly popular in presentations and in scientific literature because graphs are often much easier to read than tables. Such plots can be produced in Stata by the marginsplot command (see [R] marginsplot). However, while marginsplot is versatile and flexible, it has two major limitations: it can only process results left behind by margins (see [R] margins), and it can handle only one set of results at a time. In this article, I introduce a new command called coefplot that overcomes these limitations. It plots results from any estimation command and combines results from several models into one graph. The default behavior of coefplot is to plot markers for coefficients and horizontal spikes for confidence intervals. However, coefplot can also produce other types of graphs. I illustrate the capabilities of coefplot by using a series of examples.
THE DETERMINATION OF DIFFERENTIAL ECONOMIC OPTIMUM FERTILISATION LEVELS FOR DIFFERENT MAIZE CULTIVARS
Creators: name: Van Zyl, J.
name: Geerthsen, J. M. P.
name: Groenewald, J. A.
name: Van Zyl, J.
name: Geerthsen, J. M. P.
name: Groenewald, J. A.
Publisher: name: Unknown
Year: 1986
Subjects: Crop Production/Industries
Farm Management

description: Individual maize cultivars may react differently to fertilisation. Thus differential fertilisation levels can potentially have a marked influence on profitability of maize production and also on optimal cultivar selection. Fertilisation trials are not normally cultivardirected. The effect of fertilisation on a cultivar can thus not be directly determined. Adaptation regression lines of cultivars were used to determine economic optimum fertilisation levels for different maize cultivars at different locations. The conditions for such determinations are that the reaction of at least one cultivar on fertiliser must be known, and that the relationships between yields of different cultivars must be available. The variances between observed and predicted cultivar yields are relatively small. The proposed method should thus be satisfactory for the prediction of yields.
Edessa rufodorsata Silva 2006
Creators: name: Carrenho, Renan
name: Rodrigues, Higor D. D.
name: Lima, Adriana Carneiro de
name: Schwertner, Cristiano F.
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Pentatomidae
Edessa
Edessa rufodorsata

description: Edessa rufodorsata Silva et al., 2006
 Edessa rufodorsata Silva, Fernandes & Grazia, 2006: 356, figs. 14, 26, 38-39, 52.
 Paratype: 1♂, pinned with genitalia in a microvial; Brasil, Mato Grosso, Barra do Tapirapé, 14.XII.1964, R. Malkin col.
description: Published as part of Carrenho, Renan, Rodrigues, Higor D. D., Lima, Adriana Carneiro de & Schwertner, Cristiano F., 2020, Type specimens of true bugs (Hemiptera: Heteroptera) housed in the Museu de Zoologia da Universidade de São Paulo, Brazil, pp. 1-16 in Papéis Avulsos de Zoologia 60 on page 13, DOI: 10.11606/1807-0205/2020.60.17, http://zenodo.org/record/4614885
Tools for checking calibration of a Cox model in external validation: Approach based on individual event probabilities
Creators: name: Royston, Patrick
name: Royston, Patrick
Publisher: name: Unknown
Year: 2014
Subjects: subject: Research Methods/ Statistical Methods
subject: stcoxcal
subject: Cox proportional hazards model
subject: multivariable model
subject: prognostic factors
subject: external validation
subject: calibration
subject: survival probabilities

description: The Cox proportional hazards model has been used extensively in medicine over the last 40 years. A popular application is to develop a multivariable prediction model, often a prognostic model to predict the clinical outcome of patients with a particular disorder from “baseline” factors measured at some initial time point. For such a model to be useful in practice, it must be “validated”; that is, it must perform satisfactorily in an external sample of patients independent of the sample on which the model was originally developed. One key aspect of performance is calibration, which is the accuracy of prediction, particularly of survival (or equivalently, failure or event) probabilities at any time after the time origin. We believe systematic evaluation of the calibration of a Cox model has been largely ignored in the literature. In this article, we suggest an approach to assessing calibration using individual event probabilities estimated at different time points. We exemplify the method by detailed analysis of two datasets in the disease primary biliary cirrhosis; the datasets comprise a derivation and a validation dataset. We describe a new command, stcoxcal, that performs the necessary calculations. Results for stcoxcal can be displayed graphically, which makes it easier for users to picture calibration (or lack thereof) according to follow-up time.
title: The acquisition and maintenance of antibodies to merozoite antigens of Plasmodium falciparum and their role in protective immunity to malaria
Creators: name: Mugyenyi, Cleopatra Kama
Publisher: name: The Open University
Year: 2010

description: Measurement of antibodies at a single time point in malaria-endemic populations and associating them with protection and susceptibility has given insight into the development and maintenance of the immune response to malaria. Immunity to malaria is a dynamic process that takes place over a number of years in different stages, which implies that antibody measurement at a single time point may not adequately encompass acquisition of immunity. Antibody responses to merozoite antigens (AMA 1 and MSP2) were measured in 300 children aged 0-10 years twice a year for three years. Each child was followed up on a weekly basis for episodes of malaria. Factors affecting antibody responses at each time point and antibody contributions to protection from malaria were investigated, and the association between functional activity of anti-AMA 1 antibodies and protection was assessed. Anti-AMA 1 and anti-MSP2 antibody responses were dependent on the amount of prior and ongoing exposure and paralleled the decline in malaria transmission that occurred during the study period. High antibody responses were generated after 2-3 episodes of parasitemia and were likely to drop on further exposure. There was no evidence for polarisation of IgG responses to AMA 1. The association between antibody responses and protection/risk of malaria was dependent on both the sample time and analysis method used. Antibody responses to AMA 1(W2mef) were associated with an increased risk of malaria over the study period. Antibodies to MSP2(3D7) may be associated with protection from malaria. Antibodies to a functional invasion inhibitory epitope of AMA 1(3D7) were rare but associated with protection from malaria. Longitudinal assessment of antibody levels gives a more complete picture of acquisition and maintenance of malaria immunity. Antibodies can be both a measure of protection or susceptibility. These findings enrich knowledge on acquisition of immunity and will impact vaccination development and immunisation strategies.
Predicting the benefit of wake steering on the annual energy production of a wind farm using large eddy simulations and Gaussian process regression
Creators: name: van der Hoek, Daan
name: Doekemeijer, Bart
name: Andersson, Leif Erik
name: van Wingerden, Jan-Willem
Publisher: name: arXiv
Year: 2020
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: In recent years, wake steering has been established as a promising method to increase the energy yield of a wind farm. Current practice in estimating the benefit of wake steering on the annual energy production (AEP) consists of evaluating the wind farm with simplified surrogate models, casting a large uncertainty on the estimated benefit. This paper presents a framework for determining the benefit of wake steering on the AEP, incorporating simulation results from a surrogate model and large eddy simulations in order to reduce the uncertainty. Furthermore, a time-varying wind direction is considered for a better representation of the ambient conditions at the real wind farm site. Gaussian process regression is used to combine the two data sets into a single improved model of the energy gain. This model estimates a 0.60% gain in AEP for the considered wind farm, which is a 76% increase compared to the estimate of the surrogate model.
description: Initial submission to the Science of Making Torque from Wind (TORQUE) 2020 conference, 10 pages with 12 figures
ASSESSING EFFICIENCY IN MARKETING : THE CASE FOR AN ANALYSIS OF THE PERFORMANCE OF THE SOUTH AFRICAN BEEF AND CATTLE MARKET OPENED
Creators: name: Laubscher, J. M.
name: Laubscher, J. M.
Publisher: name: Unknown
Year: 1986
Subjects: subject: Livestock Production/Industries
subject: Marketing
subject: FOS: Economics and business

description: Recent developments within the marketing system for cattle and beef in South Africa imply major structural changes. In view of the high level of state intervention, these changes thus point to possible policy evaluation, which in turn gives rise to a broader question, namely what the effects of organising the market in a different manner would be. Usually such proposed changes are based on ideological bias instead of economic analyses of the advantages of costs involved. In South Africa there are two basic schools of thought on the appropriate level of official involvement in the beef and cattle market. These two viewpoints are contradictory which make it necessary to evaluate the performance of the existing marketing system in the first place. Market performance should then be judged by the criterion of what the community expects of a market. In this evaluation of the performance of a market a diagnostic framework should be developed within which a set of performance objectives and indicators, representing selected objectives, together with quantifiable measures are specified. The specified objectives and indicators are then shown as replacements for the method proposed for the empirical evaluation of the marketing system for cattle and beef.
Sunday Morning Church, Put On A Dress
Creators: name: Moses, Emily
Publisher: name: American University
Year: 2023

description: This original memoir in essays examines the histories of belonging and of grief in the author’s life since she stopped believing in the God of her childhood and adolescence. The author confronts herself in each essay, refusing to allow the simplest answer to suffice when she asks the questions: Who am I, now? and, What does this mean? In this memoir, the author grapples with her identity as it relates to the lived experiences of surviving sexual assault, miscarrying a pregnancy, getting married at the age of twenty-two, and choosing to terminate a second pregnancy. This memoir is the author’s attempt to organize her experiences and her emotions into containers, literal and metaphorical, that will help her make sense of the realities of her past, present, and future.
Continuum Shell Model
Creators: name: Volya, Alexander
name: Zelevinsky, Vladimir
Publisher: name: arXiv
Year: 2005
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The Continuum Shell Model is an old but recently revived method that traverses the boundary between nuclear many-body structure and nuclear reactions. The method is based on the non-Hermitian energy-dependent effective Hamiltonian. The formalism, interpretation of solutions and practical implementation of calculations are discussed in detail. The results of the traditional shell model are fully reproduced for bound states; resonance parameters and cross section calculations are presented for decaying states. Particular attention is given to one- and two-nucleon reaction channels including sequential and direct two-body decay modes. New calculations of reaction cross sections and comparisons with experimental data for helium and oxygen isotope chains are presented.
description: 19 pages, 6 figures
Cobalt and molybdenum stimulate compounds of primary metabolism, nitrogen forms, and photosynthetic pigments in peanut plants (Arachis hypogaea L.)
Creators: name: Thais Grassi Gericó
name: Tavanti, Renan Francisco Rimoldi
name: Jéssica Pacheco De Lima
name: Ribeiro, Rodolfo Pires
name: Santos, Leandro Cesar Cusim Dos
name: Silva, Marcio Souza Da
name: Reis, André Rodrigues Dos
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Pharmacology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Plant Biology
subject: 60506 Virology

description: The objective of this study was to evaluate the effects of cobalt (Co) and molybdenum (Mo) doses in the treatment of seeds on the biosynthesis of nitrogen compounds, photosynthetic pigments, sugars, and production of peanut plants. The doses of Co and Mo used were 0, 2, 3, and 4 mL kg−1 seed, which were applied immediately before sowing. Seeds treated with Co and Mo at a dose of 4 mL kg−1 yielded peanut plants with higher concentrations of photosynthetic pigments, carotenoids, and sucrose in leaves. Application of Co and Mo doses also increased biological nitrogen fixation by increasing the concentration of allantoic acid, nitrate, ammonia, and amino acids in leaves. The concentration of total amino acids corresponded to most of the nitrogen compounds (on average 50%), followed by the concentrations of nitrate (35%), ammonia (11%), allantoic acid (7%), and allantoin (0.2%). Application of 4 mL kg−1 increased the production of total amino acids compared with the control treatment. Pod yield was not affected by the Co and Mo doses; however, treatment of peanut seeds with 4 mL kg−1 was the most viable alternative for increased production of primary metabolism compounds, nitrogen forms, and photosynthetic pigments in peanut plants. This study provides important information regarding the role of Co and Mo in the biological nitrogen fixation of peanut plants. Future experiments should be conducted using a dose of 4 mL kg−1 with different genotypes to verify the potential for increasing peanut yield.
Traffic Data Imputation using Deep Convolutional Neural Networks
Creators: name: Benkraouda, Ouafa
name: Thodi, Bilal Thonnam
name: Yeo, Hwasoo
name: Menendez, Monica
name: Jabari, Saif Eddin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Machine Learning (cs.LG)
subject: Signal Processing (eess.SP)
subject: Machine Learning (stat.ML)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: We propose a statistical learning-based traffic speed estimation method that uses sparse vehicle trajectory information. Using a convolutional encoder-decoder based architecture, we show that a well trained neural network can learn spatio-temporal traffic speed dynamics from time-space diagrams. We demonstrate this for a homogeneous road section using simulated vehicle trajectories and then validate it using real-world data from NGSIM. Our results show that with probe vehicle penetration levels as low as 5\%, the proposed estimation method can provide a sound reconstruction of macroscopic traffic speeds and reproduce realistic shockwave patterns, implying applicability in a variety of traffic conditions. We further discuss the model's reconstruction mechanisms and confirm its ability to differentiate various traffic behaviors such as congested and free-flow traffic states, transition dynamics, and shockwave propagation.
Induced-Charge Electro-Osmosis
Creators: name: Squires, Todd M.
name: Bazant, Martin Z.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We describe the general phenomenon of `induced-charge electro-osmosis' (ICEO) -- the nonlinear electro-osmotic slip that occurs when an applied field acts on the ionic charge it {\sl induces} around a polarizable surface. Motivated by a simple physical picture, we calculate ICEO flows around conducting cylinders in steady (DC), oscillatory (AC), and suddenly-applied electric fields. This picture, and these systems, represent perhaps the clearest example of nonlinear electrokinetic phenomena. We complement and verify this physically-motivated approach using a matched asymptotic expansion to the electrokinetic equations in the thin double-layer and low potential limits. ICEO slip velocities vary like $u_s \propto E_0^2 L$, where $E_0$ is the field strength and $L$ is a geometric length scale, and are set up on a time scale $τ_c = λ_D L/D$, where $λ_D$ is the screening length and $D$ is the ionic diffusion constant. We propose and analyze ICEO microfluidic pumps and mixers that operate without moving parts under low applied potentials. Similar flows around metallic colloids with fixed total charge have been described in the Russian literature (largely unnoticed in the West). ICEO flows around conductors with fixed potential, on the other hand, have no colloidal analog and offer further possibilities for microfluidic applications.
description: 36 pages, 8 figures, to appear in J. Fluid Mech