cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Sub-surface H2S detection by a Surface Acoustic Wave passive wireless sensor interrogated with a ground penetrating radar
Creators: name: Rabus, David
name: Friedt, Jean-Michel
name: Arapan, Lilia
name: Lamare, Simon
name: Baque, Marc
name: Audouin, Gregoire
name: Cherioux, Frederic
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applied Physics (physics.app-ph)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Long-term monitoring of organic pollutants in the soil is a major environmental challenge. We propose to meet this issue by the development of a polymer dedicated to selectively react with H2S, coating surface acoustic wave transducers designed as passive cooperative targets with the compound, and probing their response using Ground Penetrating RADAR, thus providing the capability to monitor the presence of H2S in the subsurface environment. The selectivity is brought by including lead(II) cation in a reticulated polymer matrix which can be deposited as a thin layer on a surface acoustic wave sensor. We demonstrate a signal enhancement mechanism in which water absorption magnifies the signal detection, making the sensor most sensitive to H2S in an underground environment saturated with moisture.
description: 13 pages including supplementary material
Polymorphism in audio-visual composition - silently out of the night - Video
Creators: name: Jebanasam, Paul
Publisher: name: BathSPAdata
Year: 2021
Subjects: subject: 190203 Electronic Media Art
subject: FOS: Arts (arts, history of arts, performing arts, music)
subject: 190406 Music Composition

description: This item contains a video which is hosted externally on the Vimeo platform and available to view in full at the following link: https://vimeo.com/490133472/36910a14d3

Polymorphism in audio-visual composition defines a novel approach to materiality in audio-visual composition that fuses processes across sound and image mediums to develop a language based on hyperreal forms.
Through the focussing of spectral sound processing, light and fluid simulation techniques towards a hyperreal materiality, novel depictions of physical phenomena as mythic forms were produced. The materiality is the substrate of the works’ central mythological structures and presents a new development in the representational capacities of the audio-visual artform.

This item contains a video file of "silently out of the night" which together with the album recording of "Continuum" forms the output of this project.

Video Courtesy of Paul Jebanasam.

The work is under copyright and may not be used without permission. Use of this repository acknowledges cooperation with its policies and relevant copyright law.
Resilience, Health and Stress: Using an Ecological System Model
Creators: name: Alanazi, Zainab
Publisher: name: University of Leicester
Year: 2020
Subjects: Uncategorized

description: This thesis reports on five studies which examine whether an ecological system model of resilience, as includes adaptive, engineering and ecological aspects, can be examined within the context of health, stress and emotional regulation. Despite the well-documented application of other models of resilience in health and stress contexts, little is known about the ecological system model of resilience. This thesis therefore provides a novel investigation of the ecological system model of resilience in various settings. The findings of Study 1 indicate that aspects of the ecological system model of resilience are significantly associated with aspects of health-related quality of life and health-specific self-efficacy. Study 2 fails to offer evidence as to the relationship between resilience and physiological responses given to emotional picture stimuli by using skin conductance responses measurements. Study 3 reveals that the aspects of trait resilience are positively related with both positive and negative sound and video stimuli, with the effect size varying from small to large when using skin conductance responses measurements. Study 4 suggests that aspects of resilience are positively related with heart rate variability during an exposure to affective videos. Finally, Study 5 shows that engineering resilience is positively related with skin conductance responses and negatively related with anxiety. Furthermore, Study 5 indicates that engineering resilience uniquely predicts anxiety after controlling for baseline scores. Overall, these studies have improved our understanding held as to the ecological system model of resilience in relation to health and emotional regulation and With regard to the capacity of ecological model of resilience (EEA) for predicting quality of life (health-related) for people in their positive functioning as well as the manner in which physiological alterations in cardiovascular and electro-dermal activity, this model of resilience and provides empirical evidence about the forecasting role of resilience in general. These findings highlight key areas for development in both future studies and in relation to the resilience within the health and emotional regulation system.
A method for teleporting an unknown quantum state and its application
Creators: name: Yan, Feng-Li
name: Huo, Hai-Rui
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We suggest a method for teleporting an unknown quantum state. In this method the sender Alice first uses a Controlled-Not operation on the particle in the unknown quantum state and an ancillary particle which she wants to send to the receiver Bob. Then she sends ancillary particle to Bob. When Alice is informed by Bob that the ancillary particle is received, she performs a local measurement on the particle and sends Bob the outcome of the local measurement via a classical channel. Depending on the outcome Bob can restore the unknown quantum state, which Alice destroyed, on the ancillary particle successfully. As an application of this method we propose a quantum secure direct communication protocol.
description: 3 pages, no figure
Generalized photon-subtracted squeezed vacuum states
Creators: name: Dey, Sanjib
name: Nair, Sarika S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We construct a generalized version of the photon-subtracted squeezed vacuum states (PSSVS), which can be utilized to construct the same for nonlinear, deformed and any usual quantum mechanical models beyond the harmonic oscillator. We apply our general framework to trigonometric Pöschl-Teller potential and show that our method works accurately and produces a proper nonclassical state. We analyze the nonclassicality of the state using three different approaches, namely, quadrature squeezing, photon number squeezing and Wigner function and indicate how the standard definitions of those three techniques can be generalized and utilized to examine the nonclassicality of any generalized quantum optical states including the PSSVS. We observe that the generalized PSSVS are always more nonclassical than those arising from the harmonic oscillator. Moreover, within some quantification schemes, we find that the nonclassicality of the PSSVS increases almost proportionally with the number of photons subtracted from the generalized squeezed vacuum state. Thus, generalized PSSVS may provide an additional freedom with which one can regulate the nonclassicality and obtain an appropriate nonclassical state as per requirement.
description: 11 pages, 5 figures, Typos corrected, Few references added
Experimental study of transient cooling of a hot steel plate by an impinging circular jet
Creators: name: Meng, Qi
Publisher: name: University of British Columbia
Year: 2009

description: The steel industry produces approximately 200 million metric tons of hot-rolled steel strip annually. During the production, runout table cooling process is crucial because it strongly influences the final mechanical properties of a steel strip in a hot strip mill. The heat transfer during runout table cooling itself is considered one of the most complicated processes in the industrial world. Over the past decades much effort has been mounted worldwide to control runout table cooling operation. However, little is known about what is really happening during the water jet impingement and how far the operations are from the optimum even today. In the current study, transient heat transfer experiments of single water jet impingement on a static steel plate were achieved. The initial temperature of the steel plate, the flow rate of the water jet and the size of the nozzle were set close to the runout table condition. Jet water temperatures were set relatively high so that the film boiling phenomena can be observed. Film boiling data on the hot steel plate was experimentally and theoretically analyzed to obtain fundamental knowledge that is helpful to predict the runout table cooling process.
title: Quantifying Plot-Scale Evapotranspiration in Northeast Utah
Creators: name: Stewart, W. Sheridan
Publisher: name: Utah State University
Year: 2024

description: Evapotranspiration, the combined movement of water from the earth's surface and plants to the atmosphere, is a component of the energy balance of the land surface atmosphere continuum. Often, irrigation is used to replace water removed from the soil through evapotranspiration. Water management for irrigation is often done at the plot or field scale. Due to the smaller footprint size and the large upfront costs, evaluating evapotranspiration at such a small scale can be difficult to justify. The aim of the study was to quantify evapotranspiration at the plot scale. An energy balance model that evaluates energy from two sources, the soil surface and the vegetation surface, was used to model the energy balance in an alfalfa-grass mix field in Northeastern Utah. Two canopy sensor stations used to collect data for this model were deployed throughout the growing seasons of 2022 and 2023. The stations were in proximity to an eddy covariance tower. The eddy covariance method is widely regarded as one of the best ways to sense actual, not modeled, evapotranspiration. The canopy sensing stations’ energy fluxes were compared against the eddy covariance tower. During 2022, canopy Stations 1 and 2 were stationary. During 2023, Station 1 remained stationary, while Station 2 was moved around throughout the season. Some properties of the vegetation canopy were needed for the two-source model. Those primarily include fraction of vegetative cover, leaf area index, and crop height. These represent the percentage of viewing area that is covered by vegetation, the ratio of plant leaf area to ground area, and the height from the soil surface of the crop. These vi properties were modeled with success from various methods. The model produced estimates of all four components of the energy balance, net radiation, sensible heat flux, soil heat flux, and latent heat flux (which is energy used in evapotranspiration). These components were then compared against the eddy covariance tower components. Latent heat fluxes were converted into evapotranspiration rates. Results were mixed. Stations were operated and continuously collected plot-scale data. Station evapotranspiration responded well to seasonal changes. However, station evapotranspiration was biased high through the entire growing season.
PRICE DISCOVERY IN THE EGG INDUSTRY
Creators: name: Maynard, Leigh J.
name: Maynard, Leigh J.
Publisher: name: Unknown
Year: 1997
Subjects: Demand and Price Analysis

description: Formula pricing of eggs is typically based on quotations issued by Urner Barry Publications, and egg producers worry that the quotes are systematically lower than equilibrium levels. Egg Clearinghouse, Inc. (ECI) provides a public forum for cash trading, intended to facilitate price discovery. Evidence from 1994-95 does not suggest that Urner Barry understands producer level prices on average, Granger causality tests indicate a feedback relationship between the Urner Barry quotes and ECI prices, with ECI leading during price upswings. Lead times appear to have fallen since the late 1970s and early 1980s, confirming earlier predictions regarding market efficiency.
ECONOMIC AND POLITICAL CONSIDERATIONS IN REGIONAL COOPERATION MODELS
Creators: name: Dinar, Ariel
name: Wolf, Aaron T.
name: Dinar, Ariel
name: Wolf, Aaron T.
Publisher: name: Unknown
Year: 1997
Subjects: Political Economy

description: Cooperation among players requires a realization of economic benefits to all players and a meeting of efficiency requirements through economically driven allocations. Cooperation among political (and sometimes hostile) players may not meet these requirements. Political considerations, usually ignored in economic analyses, can hinder or even block possible arrangements. A framework is proposed that includes both economic and political considerations for evaluating transfers or trades of scarce resources. This method quantifies both the economic payoffs using n-person game theory and the political likelihood of any of the coalitions actually forming, using the PRINCE Political Accounting System. The economic-political approach is applied to a case of a potential water transfer in the western Middle East. Results suggest that incorporating political considerations in the analysis stabilizes the regional solution suggested by economic-related allocations.
Polymorphism in audio-visual composition - silently out of the night - Screening at Seeing Sound Symposium 2020
Creators: name: Jebanasam, Paul
Publisher: name: BathSPAdata
Year: 2021
Subjects: subject: 190203 Electronic Media Art
subject: FOS: Arts (arts, history of arts, performing arts, music)
subject: 190406 Music Composition

description: This item contains documentation of the screening of silently out of the night at the Seeing Sound Symposium 2020 hosted externally and available at the following link: http://www.seeingsound.co.uk/seeing-sound-2020/2020-screening/
Polymorphism in audio-visual composition defines a novel approach to materiality in audio-visual composition that fuses processes across sound and image mediums to develop a language based on hyperreal forms.

Through the focussing of spectral sound processing, light and fluid simulation techniques towards a hyperreal materiality, novel depictions of physical phenomena as mythic forms were produced. The materiality is the substrate of the works’ central mythological structures and presents a new development in the representational capacities of the audio-visual artform.
Framing Corruption: A Study Of UK Media Coverage Of Three Aid Recipient African Nations (2000-2009 And 2010-2017)
Creators: name: Tunde Olugboji
Publisher: name: University of Leicester
Year: 2020
Subjects: Uncategorized

description: Through quantitative content analysis and qualitative framing analysis, this study examines how a broad range of UK newspapers report and frame aid and corruption issues in Ethiopia, Nigeria, and Sierra Leone, three of the biggest beneficiaries of UK aid, nations that are also perceived to have a corruption problem. The potential contradiction of generosity abroad and austerity at home has raised questions, reflected in media reports, about the wisdom of the policy of maintaining a big aid budget, while at the same time cutting social spending.The study analysed over 300 articles in 15 UK newspapers published between 2000 and 2017 and makes several significant contributions to knowledge in the field of media representation of aid. First, its finding that UK newspapers did not rely heavily on news agencies for the coverage of the topic in the three countries is noteworthy, given cuts to foreign correspondents by many newspapers. Second, the positive coverage given to these issues by many ‘quality’ UK newspapers is significant, when viewed against the history, in existing literature, of negative representation of Africa by the mainstream UK media, including on matters related to aid and corruption. Third, the study fills a unique gap in literature as a result of its relatively large eighteen-year sample period. Fourth, comparing two periods of time (2000-2009 and 2010-2017) before and after the introduction of austerity makes it the first academic study to make such comparison raising new questions about the relation between aid policy, newspaper coverage and against the background of austerity economic policies in the UK.
IMPACT OF SPATIAL PRICE DISCRIMINATION WITHIN FLORIDA DAIRY COOPERATIVES
Creators: name: Nubern, Christopher A.
name: Kilmer, Richard L.
name: Nubern, Christopher A.
name: Kilmer, Richard L.
Publisher: name: Unknown
Year: 1997
Subjects: Demand and Price Analysis

description: The trend toward deregulation and the relatively high prices in the Florida milk market have increased competition for milk supplies between Florida dairy cooperatives (FDCs) and other cooperatives like Dairymen Incorporated and Southern Milk Sales. Because of the increased competition in the Florida markets, the FDCs may need to implement a discriminatory spatial pricing policy. The discriminatory pricing policy allows the FDCs to expand their membership by absorbing some of the transportation cost of producers in distant locations that would otherwise be independent producers or members of competing cooperatives. Spatial pricing policies are analyzed to determine the effects of discriminatory pricing on the blend price, average aggregate revenue of cooperative members, and total costs and quantity of milk imports. The results of this study show that a nondiscriminatory pricing policy maximizes the cooperative members' blend price and average aggregate revenue. However, if the FDCs were able to increase the price by $.50 as a result of using spatial price discrimination to gain market power, spatial price discrimination would maximize average revenue and blend price.
Pterygosoma inermis Hirst 1926
Creators: name: Fajfer, Monika
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Prostigmata
Pterygosomatidae
Pterygosoma
Pterygosoma inermis

description: Group: inermis
 Diagnosis. Palps not more than 4 times longer than wide. Antero-lateral setae few in number (7–30 pairs) and arranged in two distinct clusters on each side of idiosomal dorsum: anterior and lateral. Setae dm1 tapered. Setae dm3 present. Peripheral setae in medial part of idiosomal dorsum absent. Peripheral setae in lateral parts of idiosomal dorsum: filiform, apically expanded or paddle-shaped, and arranged in 1 row. Four pairs of genital setae g1–g4 present. Pseudanal series with 5–10 pairs of filiform, apically expanded or paddle-shaped setae.
 Included species. Pterygosoma adramitana Jack, 1961, P. aqabensis Fajfer and Melnikov, 2014, P. balochistani Fajfer, 2016, P. dhofarensis Fajfer and Melnikov, 2014, P. inermis (Trägårdh, 1905), P. inermis stoliczkana Jack, 1962, P. parasiniatum Fajfer, Melnikov and Dabert, 2016, P. persicus Hirst, 1917, P. sinaita Jack, 1961, P. theobaldi Fajfer, Melnikov and Dabert, 2016
 Distribution. These species are found in the Palearctic ecozone.
 Host range. This group is associated with agamid lizards of the genera Acanthocercus, Laudakia, Paralaudakia, Phrynocephalus, Pseudotrapelus, Stellagama and Trapelus (Agamidae).
description: Published as part of Fajfer, Monika, 2020, A systematic revision of the scale mite genus Pterygosoma Peters, 1849 (Acariformes: Pterygosomatidae), pp. 1-147 in Zootaxa 4805 (1) on page 18, DOI: 10.11646/zootaxa.4805.1.1, http://zenodo.org/record/3927100
title: Herbivore Effects on Litter Quality and Quantity and Influences on Carbon Cycling
Creators: name: Saunders, Taylor
Publisher: name: Utah State University
Year: 2024

description:
Plants are responsible for a large amount of the movement of carbon (C) and nitrogen (N) through terrestrial systems. One way that plants affect the movement of C and N is through plant litter inputs to soils. Plant litter highly influences processes such as soil microbial respiration and decomposition. Herbivores, such as geese in the Yukon Delta National Wildlife Refuge, affect these processes by changing litter quality and quantity. These changes cause differences in soil respiration, microbial communities, and nutrient turnover. However, because geese influence litter quality, quantity, and habitat characteristics simultaneously, it is not yet clear which of these factors most affects biogeochemical cycling within heavily grazed areas.

To study how these vegetation-herbivore interactions affect the movement of C and N, we performed a litter bag decomposition experiment. Our experiment investigated the potential effects of herbivores on litter decomposition, a vital process for soil organic carbon formation and nutrient turnover. Litter bags contained high and low qualities of litter, and were placed in ‘grazing lawn’ and Carex meadow habitats. ‘Grazing lawn’ is composed of Carex that geese graze, creating short-statured vegetation. Carex meadow is ungrazed habitat that has taller vegetation. Temperature, UV radiation, and rainfall characteristics were monitored between the two habitat types to account for potential habitat differences. We measured carbon and nitrogen content in litter bags.

We also performed a microcosm incubation experiment with soils and litter collected from the Yukon Delta National Wildlife Refuge. We manipulated levels of litter quality and litter quantity to fully examine the effect of litter associated with herbivores. We measured weekly CO2 levels from the microcosms. At the end of the experiment, we sequenced microbial communities and measured soil microbial biomass carbon, dissolved carbon, inorganic nitrogen, and enzyme activity. These factors are associated with differences in C and N, allowing us to see how litter quality and quantity levels affected the movement of C and N.

Our field experiment showed strong associations between litter quality and litter decomposition rates. However, grazed habitats experienced lower decomposition rates than ungrazed Carex meadow habitats. In our lab experiment, quality and quantity affected CO2 levels. Herbivore feces increased CO2 levels. Herbivore feces and low-quality senesced litter cultivated unique microbial communities, showing a strong effect of litter inputs on microbial communities in these soils. Herbivore effects on litter quality and quantity produce vegetation and soil interactions that increase CO2 emissions from soils and increase litter decomposition rates.
Nanoporous AuPt and AuPtAg alloy co-catalysts formed by dewetting-dealloying on ordered TiO2 nanotube surface lead to significantly enhanced photocatalytic H2 generation
Creators: name: Nguyen, Nhat Truong
name: Ozkan, Selda
name: Tomanec, Ondrej
name: Zhou, Xuemei
name: Zboril, Radek
name: Schmuki, Patrik
Publisher: name: arXiv
Year: 2020
Subjects: subject: Applied Physics (physics.app-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Effective co-catalysts are of key importance for photocatalytic H2 generation from aqueous environments. An attractive co-catalyst candidate are AuPt (metastable) alloys due to the synergistic electronic and chemical interaction of the constituents in the charge transfer and H2 evolution process. Here we introduce the fabrication of AuPt alloy nanoparticles with nanoporosity (pore size of 2-5 nm) fabricated on spaced TiO2 nanotubes. By dewetting a layered AgAuPt coating, we form AuPtAg alloy nanoparticles. From these alloys, Ag can selectively be dissolved leading to the desired nanoporous AuPt alloy particles with diameter in the range of 10-70 nm deposited as a gradient on the TiO2 nanotubes. A significant enhancement of photocatalytic H2 generation is obtained compared to the same loading of monometallic or nonporous alloy. The nanoporous AuPt particles provide not only a large surface area to volume ratio (and are thus more effective) but also show the intrinsic synergy of a AuPt alloy for H2 generation.
SELECTIVE BREEDING, HERITABLE CHARACTERISTICS AND GENETIC-BASED TECHNOLOGICAL CHANGE IN THE CANADIAN BEEF CATTLE INDUSTRY
Creators: name: Kerr, William A.
name: Kerr, William A.
Publisher: name: Unknown
Year: 1984
Subjects: Livestock Production/Industries
Research and Development/Tech Change/Emerging Technologies

description: The paper presents an examination of genetic-based technological change in the Canadian beef cattle industry. A model of technological change is explicitly developed in characteristics space. Production functions with genetic characteristics as arguments are estimated and two forms of technological change identified. Shadow values for characteristics are then calculated and actual genetic improvements are compared to the improvements suggested by the shadow prices. It is concluded that market forces are sufficient to regulate the process of genetic-based technological change in the Canadian beef cattle industry.
Helium diffusion during the evolution of solar-type stars : asteroseismic tests
Creators: name: Castro, M.
name: Vauclair, S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The element diffusion, described by Michaud (1970), is now recognized to occur in all kinds of stars. We attempt to give evidence of signatures of helium diffusion below the convective zone by the way of asteroseismology.
description: 2 pages, 3 figures, proceeding of the meeting "Stellar Pulsation and Evolution", Monte Porzio Catone, 19-24 June 2005
Factors Influencing High Academic Achievement Of Stateless Migrant Children In Tak Province, Thailand
Creators: name: Peson Chobphon
Publisher: name: University of Leicester
Year: 2020
Subjects: Uncategorized

description: It is estimated that 200,000 stateless migrant children are in Thailand. These children lead very hard lives because of their familys’ socioeconomic disadvantages and the limitations of legal citizenship rights. Due to the legal human rights obligation, and the hope that education will turn migrant children into strong human capital for Thailand, the Thai government allows both registered and unregistered migrant children to access Royal Thai Government Schools. Although these children are exposed to significant threats, some of them have good academic achievement.The aim of this multiple-case study was to study 5 factors: family, individual, school/teacher, peer group, and community / culture (which influenced the academic achievement of 6 migrant children who are studying in grade 6 in 2 Royal Thai Government Schools in Mae Sot, Tak Province, Thailand.) Interviews and observation were chosen to be used in this study. Six migrant students, six student participants’ carers and their 3 class teachers participated in semi-structured interviews. All student participants were observed while they were learning and taking part in school activities. Data were transcribed. Data analysis for this study followed 5 steps suggested by Creswell (2009); organising and preparing data, reading through all data, coding the data, interrelating theme/description, and interpreting the meaning of theme/ description. The seven themes that emerged were (1) the value of education, (2) parents/guardians as important agents to support their children’s education, (3) individual characteristics contributing to good grades, (4) the impact of peer relationships, (5) healthy relationships with school and teachers, (6) the power of the community, and (7) gratitude as a motivation for a high level of education. The findings of this study contribute to the knowledge in the field of migrant education. Some implications and suggestions for future research emerged from the findings.
it is impossible for everyone to achieve everything they want_video documentation
Creators: name: Saunders, James
Publisher: name: BathSPAdata
Year: 2021
Subjects: subject: 190406 Music Composition
subject: FOS: Arts (arts, history of arts, performing arts, music)

description: The material referenced in this item is located externally on the YouTube platform, and can be viewed in full by accessing via the provided link.

it is impossible for everyone to achieve everything they want (2018) asks the players to construct sequences of sounds, responding to what they hear preceding players do. Players have control over their own actions, but generally not those of others. They can influence some behaviours but not control the group totally, although forming allegiances might enable more control to be exerted on the group. The piece uses a set of artificially constructed or presented sounds, including text-to-speech computer voices, recordings of real world sounds, algorithmically generated music, synthesisers, radio, dictaphones, and spoken commands delivered over megaphones. The title is taken from Larry Diamond's text 'What is Democracy?' (2004).
This item contains the performance documentation for it is impossible for everyone to achieve everything they want. The piece was commissioned by Matrix New Music Centre, funded by the Ernst von Siemens Musical Foundation for the 2018 Nadar Academy. It was first performed by Nadar Summer Academy Ensemble at Transit Festival, Leuven, on 13 October 2018.
Quantum kinetic description of Coulomb effects in one-dimensional nano-transistors
Creators: name: Indlekofer, K. M.
name: Knoch, J.
name: Appenzeller, J.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: In this article, we combine the modified electrostatics of a one-dimensional transistor structure with a quantum kinetic formulation of Coulomb interaction and nonequilibrium transport. A multi-configurational self-consistent Green's function approach is presented, accounting for fluctuating electron numbers. On this basis we provide a theory for the simulation of electronic transport and quantum charging effects in nano-transistors, such as gated carbon nanotube and whisker devices and one-dimensional CMOS transistors. Single-electron charging effects arise naturally as a consequence of the Coulomb repulsion within the channel.
Pterygosoma melanum Hirst 1926
Creators: name: Fajfer, Monika
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Prostigmata
Pterygosomatidae
Pterygosoma
Pterygosoma melanum

description: Group: melanum
 Diagnosis. Palps not more than 4 times longer than wide. Antero-lateral setae numerous (80–120 pairs). Setae dm1 tapered or paddle-shaped. Setae dm3 absent. Peripheral setae tapered or paddle-shaped and arranged in 1 row. Genital series represented by 1 or 3 pairs of setae g. Four pairs of pseudanal setae present: setae ps1 and ps2 paddleshaped, rounded or cylindrical; setae ps3 and ps4 rounded.
 Included species. Pterygosoma angolae Jack, 1962, Pterygosoma armatum Lawrence, 1936, Pterygosoma bedfordi Lawrence, 1936, Pterygosoma benguellae Jack, 1962, Pterygosoma capensis Jack, 1962, Pterygosoma hirsti Lawrence, 1936, Pterygosoma longipalpae Lawrence, 1936, Pterygosoma melanus Hirst, 1917.
 Distribution. These mites are found in the southern part of the Afrotropic ecozone.
 Host range. This group is found exclusively on lizards of the genus Agama (Agamidae).
description: Published as part of Fajfer, Monika, 2020, A systematic revision of the scale mite genus Pterygosoma Peters, 1849 (Acariformes: Pterygosomatidae), pp. 1-147 in Zootaxa 4805 (1) on pages 48-51, DOI: 10.11646/zootaxa.4805.1.1, http://zenodo.org/record/3927100
PORT ELEVATOR CAPACITY AND NATIONAL AND WORLD GRAIN SHIPMENTS
Creators: name: Barnett, Doug
name: Binkley, James K.
name: McCarl, Bruce A.
name: Barnett, Doug
name: Binkley, James K.
name: McCarl, Bruce A.
Publisher: name: Unknown
Year: 1984
Subjects: International Relations/Trade

description: An analysis is conducted on the port component of the United States grain export system. A transshipment model is utilized which covers both United States internal and foreign shipments of corn, soybeans, and wheat during the four quarters of a year. The model suggests that there will be quarter to quarter constraints on port capacity but that annual capacity is adequate. Through sensitivity analysis a number of key factors were found which influence the adequacy of the current port system. Port adequacy is found to depend not as much on export market location as it does on domestic transportation rates and policies.
AN EVALUATION OF PRICING PERFORMANCE AND HEDGING EFFECTIVENESS OF THE BARLEY FUTURES MARKET
Creators: name: Carter, Colin A.
name: Carter, Colin A.
Publisher: name: Unknown
Year: 1984
Subjects: subject: Crop Production/Industries
subject: Marketing
subject: FOS: Economics and business

description: This paper investigates the pricing efficiency and hedging effectiveness of the Winnipeg barley futures market, using the Chicago corn futures market as a norm. Several tests of pricing efficiency were conducted and the stability of the basis was studied. The barley futures market operates in a heavily regulated economic environment and this is shown to impact on both price behavior and hedging opportunities.
PROFIT MAXIMIZATION AS A MANAGEMENT GOAL ON SOUTHEASTERN MONTANA RANCHES
Creators: name: Biswas, Basudeb
name: Lacey, John R.
name: Workman, John P.
name: Siddoway, Francis H.
name: Biswas, Basudeb
name: Lacey, John R.
name: Workman, John P.
name: Siddoway, Francis H.
Publisher: name: Unknown
Year: 1984
Subjects: Farm Management

description: While tests of producer rationality defined as conformity to the rules of profit maximization (or a similar postulate) for less developed countries are numerous, such tests for high-income countries are rare. This study investigates the extent of rationality observed in the production behavior of ranchers in southeastern Montana. The procedure used is that of Wise, Yotopoulos, and Nugent, based on a profit-maximizing production model. The data were collected by personal interviews for 69 ranchers. Results indicate that profit maximization is a reasonably good postulate for studying the behavior of ranchers, and that various policy measures, could, at least tentatively, proceed on that basis.
Worldline master formulas for the dressed electron propagator, part 1: Off-shell amplitudes
Creators: name: Ahmadiniaz, Naser
name: Guzman, Victor Miguel Banda
name: Bastianelli, Fiorenzo
name: Corradini, Olindo
name: Edwards, James P.
name: Schubert, Christian
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the first-quantised worldline approach to quantum field theory, a long-standing problem has been to extend this formalism to amplitudes involving open fermion lines while maintaining the efficiency of the well-tested closed-loop case. In the present series of papers, we develop a suitable formalism for the case of quantum electrodynamics in vacuum (part one and two) and in a constant external electromagnetic field (part three), based on second-order fermions and the symbol map. We derive this formalism from standard field theory, but also give an alternative derivation intrinsic to the worldline theory. In this first part, we use it to obtain a Bern-Kosower type master formula for the fermion propagator, dressed with $N$ photons, in terms of the "$N$-photon kernel," where off-shell this kernel appears also in "subleading" terms involving only $N-1$ of the $N$ photons. Although the parameter integrals generated by the master formula are equivalent to the usual Feynman diagrams, they are quite different since the use of the inverse symbol map avoids the appearance of long products of Dirac matrices. As a test we use the $N=2$ case for a recalculation of the one-loop fermion self energy, in $D$ dimensions and arbitrary covariant gauge, reproducing the known result. We find that significant simplification can be achieved in this calculation choosing an unusual momentum-dependent gauge parameter.
description: 50 pages, 4 figures
Development of Teaching and Learning Resources (TLRs) to Challenge Student’s Alternative Conceptions of Core Ideas in General Chemistry Course
Creators: name: Erlina
Publisher: name: University of Leicester
Year: 2020
Subjects: Uncategorized

description: Previous research has proved that chemistry is perceived to be a difficult subject for many students. Abstract concepts and the inability of students to make connections between the macroscopic, sub-microscopic and symbolic levels are believed to be the main reasons. To overcome this issue, this study focused on the development of teaching and learning resources (TLRs) that embedded these three levels of representation to challenge students’ alternative conceptions in general chemistry. An action research methodology was employed to develop the TLRs. The four-stages, design, develop, evaluate and reflection were framed in a cyclic form. The design of the TLRs began by reviewing the literature to find common alternative conceptions to develop a plot which led to the development of the prototype. Pilot studies were used to refine the design of the final TLRs. Three TLRs have been produced; the Shape of Molecule Cards and Molecular Model Building, Leaflet of Electronegativity, and the Video of Intermolecular Forces. The results of these pilot studies suggested that all TLRs were suitable for use in the classroom following some minor changes based on student feedback. The findings of the pilot studies show that all students responded positively to the TLRs. Both quantitative and qualitative data analysis methods were used as the triangulation process to improve the validity and reliability of the research. The evaluation process started by implementing the TLRs at the University of Tanjungpura, Indonesia. The TLRs had a measurable impact on student understanding of the selected concepts and successfully challenged common alternate conceptions. These TLRs may be of further use to educators and educational researchers seeking to support student learning and gain a deeper insight into how students learn chemistry, and the methodology employed will be easily transferable to the development and evaluation of TLRs across a range of disciplines.
An Exploration of Maths Anxiety and Interventions in the Primary Classroom
Creators: name: Kirkland, Heidi R.
Publisher: name: University of Leicester
Year: 2020
Subjects: Uncategorized

description: Maths Anxiety has been defined as “feelings of tension and anxiety that interfere with the manipulation of numbers and the solving of ordinary and academic situations” (Richardson & Suinn, 1972, p.551). Research, such as Devine et al. (2012), has found that the likely age of onset occurs during primary school years, yet the majority of research has focused on adolescent or adult populations. Comparatively, there is minimal research that qualitatively explores children’s experiences of Maths Anxiety within the primary classroom, or the effect of interventions upon these. This qualitative research aimed to explore how primary school children experience Maths Anxiety and related interventions in-situ from an interpretivist worldview. Three participants’ (aged 8 – 10 years) experiences were explored. This research implemented instrumental case studies to: (1) explore how primary school children experience Maths Anxiety and (2) inform subsequent interventions that were tailored to their own experiences and based on Expressive Writing and Mathematical Resilience. This research also conducted evaluative case studies to identify whether the interventions had any effect on the experiences of Maths Anxiety. Qualitative analysis revealed key themes across three cases of Maths Anxiety. How these were manifested and recognised, however, differed for each participant. This suggests that exploring experiences in an in-depth manner highlights the individual nature of Maths Anxiety and how the experience may be illustrated in the primary classroom. The interventions also had varying effects across cases, again depicting a uniqueness to the experience.These findings suggest that more research needs to be done through an interpretivist lens to heighten the field’s understanding of how Maths Anxiety is experienced and the possible effects of related interventions. This may improve understanding and action in the research field and within the primary classroom.
Effect of Low Oxygen Annealing on Photoelectrochemical Water Splitting Properties of $α$-Fe$_2$O$_3$
Creators: name: Makimizu, Yoichi
name: Nguyen, Nhat Truong
name: Ahn, Hyo-Jin
name: Yoo, JeongEun
name: Hwang, Imgon
name: Kment, Stepan
name: Schmuki, Patrik
Publisher: name: arXiv
Year: 2020
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Photoelectrochemical (PEC) water splitting is a promising method for conversing solar energy into chemical energy stored in the form of hydrogen. Nanostructured hematite ($α$-Fe$_2$O$_3$) is one of the most attractive materials for highly efficient charge carrier generation and collection due to its large specific surface area and shortening minority carrier diffusion length required to reach the surface. In the present work, PEC water splitting performance of $α$-Fe$_2$O$_3$ prepared by anodization of thin iron layers on an FTO glass and subsequent annealing in low O$_2$-Ar ambient with only 0.03% O$_2$ was investigated. The key finding is that annealing the anodic nanostructures with low oxygen concentration provides a strongly enhanced PEC performance compared with classic air annealing. The photocurrent of the former at 1.5 V vs. RHE results in 1.1 mA/cm2, being 11 times higher than that of the latter. The enhancement of the PEC performance for $α$-Fe$_2$O$_3$ annealed in low oxygen atmosphere can be attributed to controlled morphology, Sn doping, and introduction of oxygen vacancies, which contribute to the enhancement of the hole flux from the photogenerated site to the reactive surface and additionally lead to an enhanced hole transfer at the interface between the $α$-Fe$_2$O$_3$ and the electrolyte. From the obtained results, it is evident that low oxygen annealing is a surprisingly effective method of defect engineering and optimizing $α$-Fe$_2$O$_3$ electrodes for a maximized PEC water splitting performance.
CROSS HEDGING HAY USING CORN FUTURES: AN EMPIRICAL TEST
Creators: name: Blake, Martin L.
name: Catlett, Lowell B.
name: Blake, Martin L.
name: Catlett, Lowell B.
Publisher: name: Unknown
Year: 1984
Subjects: subject: Marketing
subject: FOS: Economics and business

description: This study examines the use of corn futures contracts to cross hedge both U.S. hay and New Mexico alfalfa hay. Correlations between monthly spot U.S. hay prices and corn futures prices ranged from .828 to .970 and were all significant at the alpha= .001 level. Multiple regression was used to determine the optimal corn futures contract month to cross hedge each spot monthly hay price. Regressions were used to determine the coverage ratio of tons of hay per corn futures contracts. A routine cross hedge was simulated and showed that cross hedging hay using corn futures increases gross returns per ton of hay.
A quantitative investigation into the accumulation of rounding errors in the numerical solution of ODEs
Creators: name: Mosbach, Sebastian
name: Turner, Amanda G.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Numerical Analysis (math.NA)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 65G50

description: We examine numerical rounding errors of some deterministic solvers for systems of ordinary differential equations (ODEs). We show that the accumulation of rounding errors results in a solution that is inherently random and we obtain the theoretical distribution of the trajectory as a function of time, the step size and the numerical precision of the computer. We consider, in particular, systems which amplify the effect of the rounding errors so that over long time periods the solutions exhibit divergent behaviour. By performing multiple repetitions with different values of the time step size, we observe numerically the random distributions predicted theoretically. We mainly focus on the explicit Euler and RK4 methods but also briefly consider more complex algorithms such as the implicit solvers VODE and RADAU5.
description: 17 pages, 7 figures
Mobile social media usage and academic performance
Creators: name: Giunchiglia, Fausto
name: Zeni, Mattia
name: Gobbi, Elisa
name: Bignotti, Enrico
name: Bison, Ivano
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: Among the general population, students are especially sensitive to social media and smartphones because of their pervasiveness. Several studies have shown that there is a negative correlation between social media and academic performance since they can lead to behaviors that hurt students' careers, e.g., addictedness. However, these studies either focus on smartphones and social media addictedness or rely on surveys, which only provide approximate estimates. We propose to bridge this gap by i) parametrizing social media usage and academic performance, and ii) combining smartphones and time diaries to keep track of users' activities and their smartphone interaction. We apply our solution on the 72 students participating in the SmartUnitn project, which investigates students' time management and their academic performance. By analyzing the logs of social media apps on students' smartphones and by comparing them to students' credits and grades, we can provide a quantitative and qualitative estimate of negative and positive correlations. Our results show the negative impact of social media usage, distinguishing different influence patterns of social media on academic activities and also underline the need to control the smartphone usage in academic settings.
Noble-Metal-Free Photocatalytic Hydrogen Evolution Activity: The Impact of Ball Milling Anatase Nanopowders with TiH2
Creators: name: Zhou, Xuemei
name: Liu, Ning
name: Schmidt, Jochen
name: Kahnt, Axel
name: Osvet, Andres
name: Romeis, Stefan
name: Zolnhofer, Eva M.
name: Marthala, Venkata Ramana Reddy
name: Guldi, Dirk M.
name: Peukert, Wolfgang
name: Hartmann, Martin
name: Meyer, Karsten
name: Schmuki, Patrik
Publisher: name: arXiv
Year: 2020
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In this work, we demonstrate that a well-established and facile ball milling approach using mixtures of commercial anatase nanoparticles and TiH2 introduces noble-metal-free photocatalytic H2 activity to titania. We characterize this synergistic effect in view of the nature of defects, state of hydroxylation, and investigate the effect on the energetics and kinetics of electronic states and the resulting H2 evolution performance.
Half-metallic properties of atomic chains of carbon-transition metal compounds
Creators: name: Dag, S.
name: Tongay, S.
name: Yildirim, T.
name: Durgun, E.
name: Senger, R. T.
name: Fong, C. Y.
name: Ciraci, S.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We found that magnetic ground state of one-dimensional atomic chains of carbon-transition metal compounds exhibit half-metallic properties. They are semiconductors for one spin-direction, but show metallic properties for the opposite direction. The spins are fully polarized at the Fermi level and net magnetic moment per unit cell is an integer multiple of Bohr magneton. The spin-dependent electronic structure can be engineered by changing the number of carbon and type of transition metal atoms. These chains, which are stable even at high temperature and some of which keep their spin-dependent electronic properties even under moderate axial strain, hold the promise of potential applications in nanospintronics.
description: 11 pages, 3 figures, 1 tables