cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A 50/50 electronic beam splitter in graphene nanoribbons as a building block for electron optics
Creators: name: Lima, Leandro R. F.
name: Hernández, Alexis R.
name: Pinheiro, Felipe A.
name: Lewenkopf, Caio
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Based on the investigation of the multi-terminal conductance of a system composed of two graphene nanoribbons, in which one is on top of the other and rotated by 60 degrees, we propose a setup for a 50/50 electronic beam splitter that neither requires large magnetic fields nor ultra low temperatures. Our findings are based on an atomistic tight-binding description of the system and on the Green's function method to compute the Landauer conductance. We demonstrate that this system acts as a perfect 50/50 electronic beam splitter, in which its operation can be switched on and off by varying the doping (Fermi energy). We show that this device is robust against thermal fluctuations and long range disorder, as zigzag valley chiral states of the nanoribbons are protected against backscattering. We suggest that the proposed device can be applied as the fundamental element of the Hong-Ou-Mandel interferometer, as well as a building block of many devices in electron optics.
description: 7 pages, 4 figures
Macro-econometric Modelling of Ethiopian Economy and Its Policy Implication: An Eclectic Approach
Creators: name: Tebekew, Tewodros
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2011

description: The paper presents a small macroeconometric model by categorizing the working of the economy in to aggregate demand, aggregate supply, monetary sector, and price sector. The model is estimated using data from 1970/71 to 2008/09 employing an eclectic approach, the Engle-Grager two step procedure and Autoregressive Dynamic lag Model (ARDL) approach of Pesearan et al (2001) to obtain the cointegrating relations and short run dynamic model. The construction of the model follows the lines of aggregate supply - aggregate demand framework. The adequacy of the model and its forecasting accuracy is checked using MAE, MAPE, RMSPE and Theil's inequality coefficients. And the model is found to track endogenous variables well for the given sample period. Policy simulation using the dynamic simulation method compares the dynamic responses to the fiscal policy in the form of expansionary government has an expansionary effect on domestic output, however followed by inflation and crowding out of private investment. The other simulation is a monetary restraint policy in the form of reducing domestic credit is effective to alleviate inflation and improve the trade balance though it is less effective to increase domestic output. Ethiopian economy is found to be highly susceptible to external shock and an increase in imported price level results a contraction in domestic output and creates inflation in domestic economy and a reduction in both export and import level of the country.
Multiple objects tracking in surveillance video using color and Hu moments
Creators: name: M, Chandrajit
name: R, Girisha
name: T, Vasudev
Publisher: name: arXiv
Year: 2016
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Multiple objects tracking finds its applications in many high level vision analysis like object behaviour interpretation and gait recognition. In this paper, a feature based method to track the multiple moving objects in surveillance video sequence is proposed. Object tracking is done by extracting the color and Hu moments features from the motion segmented object blob and establishing the association of objects in the successive frames of the video sequence based on Chi-Square dissimilarity measure and nearest neighbor classifier. The benchmark IEEE PETS and IEEE Change Detection datasets has been used to show the robustness of the proposed method. The proposed method is assessed quantitatively using the precision and recall accuracy metrics. Further, comparative evaluation with related works has been carried out to exhibit the efficacy of the proposed method.
description: 13 pages, Signal & Image Processing : An International Journal (SIPIJ) Vol.7, No.3, June 2016
title: David Paulson, Family Firms in Postwar Britain and Germany: Competing Approaches to Business
Creators: name: Meder, Janis
Publisher: name: Max Weber Stiftung
Year: 2024
Subjects: subject: 9

description: German Historical Institute London Bulletin, vol. 46, no. 2GHI London Bulletin 2024, Bd. 46, Nr. 2, p. 113
Modelling wetland hydrodynamics
Creators: name: Bishop, Warwick
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
title: The coordinating influence of thalamic nucleus reuniens on sleep oscillations in cortical and hippocampal structures – relevance to memory consolidation and sleep structure
Creators: name: Bozic, Ivan
Publisher: name: Universität Bern
Year: 2023
Subjects: subject: 610 Medicine & health

description: Sleep is a fascinating and a bit mysterious behavior. Not only do so called “higher” animals like mammals sleep but also simpler organisms like jellyfish display rhythmic periods of quiescence which are interpreted as sleep. Despite it being almost ubiquitous across the animal kingdom, the function of sleep is still not fully understood. However, we do know that especially the brain is important for the initiation and maintenance of that state and that it is highly active during sleep. There has been a special focus on electric neuro-oscillations where research over the last 90 years has revealed that the brain displays quite distinct oscillatory patterns during sleep and its specific functions are slowly being brought to light, such as memory consolidation and communication between different brain regions. For example, it has been argued that newly formed memories are either stored in the hippocampus or at least dependent on it for reactivation and are later transferred to the neocortex or become independent of the hippocampus while being stabilized in the cortex, with a portion of the thalamus, the nucleus reuniens thalami, being possibly involved in this process as it is an anatomical relay between cortex and hippocampus. The aim of my PhD project was to investigate the coupling of neuro-oscillations between prefrontal cortex, thalamus, and hippocampus in both a descriptive and manipulative way. Namely, we investigated the coupling between prelimbic cortex, nucleus reuniens of the thalamus and the CA1 portion of the hippocampus during unperturbed natural sleep, sleep after sleep deprivation and sleep with increased mnemonic demands after a learning task. Lastly, we optogenetically manipulated nucleus reuniens during sleep to assess its properties as a synchronizing link between prefrontal cortex and hippocampus. We described the coupling of corticothalamic slow waves and spindles with ripples in the hippocampus by quantifying the amount of co-occurrence of the aforementioned events, describing the phase-locking of ripples to slow waves and spindles, and determining which oscillations drives the other. Next we found that spiking behavior of nucleus reuniens is coupled to ripples and cortical slow waves. Lastly, optogenetic manipulation showed that nucleus reuniens is involved in the precise phase-event coupling, in the co-occurrence of the mentioned events, and oscillatory drive between cortex and hippocampus. However, the effects we found on the neuro-oscillatory coupling were not accompanied by a change in memory performance after a learning task.
Observational Constraints on First-Star Nucleosynthesis. I. Evidence for Multiple Progenitors of CEMP-no Stars
Creators: name: Yoon, Jinmi
name: Beers, Timothy C.
name: Placco, Vinicius M.
name: Rasmussen, Kaitlin C.
name: Carollo, Daniela
name: He, Siyu
name: Hansen, Terese T.
name: Roederer, Ian U.
name: Zeanah, Jeff
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We investigate anew the distribution of absolute carbon abundance, $A$(C) $= \log\,ε$(C), for carbon-enhanced metal-poor (CEMP) stars in the halo of the Milky Way, based on high-resolution spectroscopic data for a total sample of 305 CEMP stars. The sample includes 147 CEMP-$s$ (and CEMP-r/s) stars, 127 CEMP-no stars, and 31 CEMP stars that are unclassified, based on the currently employed [Ba/Fe] criterion. We confirm previous claims that the distribution of $A$(C) for CEMP stars is (at least) bimodal, with newly determined peaks centered on $A$(C)$=7.96$ (the high-C region) and $A$(C)$ =6.28$ (the low-C region). A very high fraction of CEMP-$s$ (and CEMP-r/s) stars belong to the high-C region, while the great majority of CEMP-no stars reside in the low-C region. However, there exists complexity in the morphology of the $A$(C)-[Fe/H] space for the CEMP-no stars, a first indication that more than one class of first-generation stellar progenitors may be required to account for their observed abundances. The two groups of CEMP-no stars we identify exhibit clearly different locations in the $A$(Na)-$A$(C) and $A$(Mg)-$A$(C) spaces, also suggesting multiple progenitors. The clear distinction in $A$(C) between the CEMP-$s$ (and CEMP-$r/s$) stars and the CEMP-no stars appears to be $as\ successful$, and $likely\ more\ astrophysically\ fundamental$, for the separation of these sub-classes as the previously recommended criterion based on [Ba/Fe] (and [Ba/Eu]) abundance ratios. This result opens the window for its application to present and future large-scale low- and medium-resolution spectroscopic surveys.
description: 26pages, 7 figures, and 3 Tables ; Accepted for publication in ApJ; added more data and corrected minor inconsistencies existed in the compiled data of the previous studies
title: Biodiversity and Foraging Preferences of Bee Communities at Pinnacles National Park Over Time
Creators: name: Lehner, Abigail M. E.
Publisher: name: Utah State University
Year: 2022

description: Bees are considered to be the most important animal pollinator, providing billions of dollars in pollination services each year. Despite their importance in both natural and agricultural settings, the status of most native bees is unknown. Native bees are subject to a variety of threats including habitat loss, pesticide use, and climate change. Yet, monitoring programs have been implemented in few natural areas. Pinnacles National Park, PNP, in California is one of the only natural areas to have a large historical dataset on bees across decades with surveys conducted in 1996, 1997, 1998, 1999, 2002, 2011, and 2012. These surveys have found PNP to house an exceptionally diverse community of bees. To determine how the bee community at PNP has changed over time we returned to survey bees in 2020 and compare the current collection to historical collections. We found that overall diversity levels remained at similar levels across years, but community composition changed among years, suggesting that the bee community experiences species turnover, but has not experienced over diversity losses. Using our bee survey as a framework, we discuss some issues with current bee monitoring practices and recommend creative solutions. To provide better techniques for site selection or monitoring monolectic species habitat we used Ceratina sequoiae Michener abundance at PNP, as a framework to model suitable habitat using citizen science records. We selected six topographic factors to model in conjunction with the required floral and nesting resources of C. sequoiae. The suitability modeling indicated that considering elevation in addition to the required floral and nesting resources could better predict C. sequoiae abundance. Throughout the duration of our bee survey at PNP, we also observed a novel foraging behavior. We discovered tens of bees feeding on aphid-produced pine honeydew, a seemingly rare behavior among native bees. The culmination of our findings highlight the importance of long term pollinator monitoring studies, not only to detect diversity shifts over time, but also to determine the diversity of behaviors exhibited by bees.
Flow of non-Newtonian fluids in the entrance region of annuli
Creators: name: Bhattacharyya, Satinath
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
title: A Social-Ecological Approach to Understanding the Structure, Function, and Challenges Faced by Fisheries
Creators: name: Lamborn, Chase C.
Publisher: name: Utah State University
Year: 2022

description: Fisheries throughout the world play many important roles, and they are also subject to many pressures. The tension between roles and pressures is increasing, and as a result, many fisheries are being utilized to, or over their capacity, which ultimately threatens their sustainability. To address these challenges, this dissertation provides insights and tools to help us better understand fisheries and the challenges they face. The first study explores the impacts of an earlier spring runoff in Montana. Earlier runoff has resulted in lower and warmer summer flows, which is stressing coldwater species like trout. This stress is affecting fishing quality, and the state of Montana, along with outfitters and guides, are altering fishing practices to reduce resource impacts. As runoff trends continue, August, the once-coveted month offering high quality angling opportunities, will be fraught with unfavorable conditions and fishing restrictions. The second study presents an innovative method for developing social-ecological models. I show how this approach can illustrate the breadth and interconnectedness of a social-ecological system and explore the components and interactions affecting a system’s sustainability. Using a collaboratively developed model of the Kenai fishery, I identified how the nature of salmon (migratory) and their habitat (large and unpredictable) leads to uncertainty about effective management strategies. This uncertainty, in addition to a large and diverse set of people using the fishery, creates conflicting management visions, which ultimately paralyze the governance system. The third study evaluates how fire and post-fire flooding can affect a fishery. Through stakeholder interviews and a literature review, I identified fish populations that are the most vulnerable to long-term fire-related impacts. Vulnerable populations are isolated, lack quality habitat alternatives, and have low abundance. Applying this to the Kenai, I concluded that early-run Chinook salmon are the most vulnerable to fire, and if impacted, early-run Chinook have the greatest potential to severely impact the broader fishery through a chain of negative interactions. Collectively, this dissertation provides insights and tools to help us better understand fisheries and the challenges they face.
Determinants of Gasoline and Diesel Demand in Ethiopia
Creators: name: Mosse, Aniley
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2002

description: In this paper attempts are made to identify determinants of gasoline and diesel demand in Ethiopia. The study estimates gasoline and diesel demand using time series data starting from 1964/65 to 1999/2000. To determine whether there exists long-run relation between gasoline and diesel demand and its fundamentals, the Johansen procedure of co-integration analysis is used. Accordingly, there exists one unique co-integration relation between gasoline and diesel demand, and its fundamentals. The long-run gasoline demand result shows that price of gasoline, population growth and urbanization are found to be statistically significant while price of diesel (relative price), real income per capita, gasoline using vehicles and real foreign exchange earnings are insignificant. Similarly in the case of diesel demand; price of diesel (own price), price of gasoline (relative price), real income per capita, urbanization and diesel using vehicles are found to be statistically significant while population growth and real foreign exchange are insignificant. In the short-run, price of gasoline and diesel, gasoline and diesel using vehicles are statistically significant. In terms of elasticities, gasoline and diesel prices are inelastic while income is marginally elastic for both demand model. Therefore, diesel is a substitute to gasoline in the long-run and has no effect on both demand in the short-run. Finally, since gasoline and diesel price is inelastic in the short-run, the quantity of gasoline and diesel demand is far less responsive to price changes, while the marginal income elasticity suggesting that gasoline and diesel demand continue growing as income of the society increases. However, the prices are tightly controlled and fixed by the government, and it uses cross subsidization as a deliberate means to influence the pattern of energy demand
Extensional rheometry of entangled solutions of linear, flexible polymers
Creators: name: Bhattacharjee, Pradipto Kamal
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Curso de actualización de diagnóstico y manejo de las infecciones asociadas a la atención en salud (IASS).
Creators: name: Espana, Jaime David Acosta
Publisher: name: Zenodo
Year: 2022
Subjects: Infecciones asociadas a la atención en salud
IAAS
Curso

description: Este proyecto educativo instruirá a médicos generales y especialistas en el diagnóstico y en infecciones asociadas a la atención en salud (IAAS) y sus microorganismos más frecuentes. Necesidades: El uso racional de antibióticos es una competencia relevante en los médicos, es curioso que muchos profesionales de la salud hayan tenido un informe de microbiología en sus manos, y no estaban seguros de cuál era el mejor antibiótico para su paciente. O no tenían seguridad de que exámenes solicitar para confirmar la sospecha de infección y guiar la terapéutica en base al antibiograma o antifungigrama. Contexto: La pandemia ha potenciado la aparición de pacientes con IAAS. Los profesionales de salud de forma más frecuente nos enfrentamos a pacientes con infecciones graves. La decisión clínica del antibiótico debe ser justa. Es decir, el espectro adecuado para el microorganismo. De lo contrario se estimula la presión selectiva y aparecimiento de microorganismos resistentes a los antimicrobianos. O se corre el riesgo de mortalidad si el espectro del antibiótico no cubre el agente etiológico de la IAAS. Evaluación: (A) Evaluación diagnóstica por preguntas de opción múltiple de una sola respuesta vía google forms. (B) Previo a cada tema evaluación teórica por Kahoot para asegurar el estudio previo a la clase. (B) Posterior a la clase se realizará una evaluación de seguimiento por Kahoot para confirmar los conocimientos adquiridos. (C) La evaluación final será práctica de forma oral con casos clínicos asociados a infecciones en los sitios de cirugía, infecciones del torrente sanguíneo asociadas a vía central, neumonía asociada al ventilador, infecciones urinarias asociadas al catéter. Se enviará una encuesta de satisfacción a cada participante al finalizar el curso para medir su grado de satisfacción y recoger su retroalimentación para mejorar la calidad.
description: none
Prospect and Retrospect of Exchange Rate Shocks on Manufacturing and Exports of Ethiopia: CGE Model Analysis
Creators: name: Fekadu, Tizazu
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2011

description: In this study, the positive and negative consequences of deliberate shocks to Ethiopian Birr have been examined. The focus areas of the analysis includes: domestic production, real consumption, welfare, export, import, trade balance, and current account. It also addresses impacts on employment, investment, government revenue and economic growth. A static CGE model is employed so as to observe the multi sectors and multi activities effects of the shocks. The outcomes of the simulations are checked for their robustness through sensitivity test. They have been also interpreted counterfactually for the short run to medium term effects. The findings of the analysis reveal that the productions of agricultural and service sectors expand where as that of the industrial sector shrinks. Particularly, exportable agricultural products and non tradable service sector derive more returns. Even if the light and some heavy manufacturing are benefited, the significant and adverse effect on construction sub sectors largely outweighs. Besides, exports grow faster than imports. On the other hand, trade balance continuous to increase negatively whereas current account partly improves and partly deteriorates under different shock levels. By and large, real consumption, welfare, GDP, investment and government revenue are all adversely affected. And, thus, the economy of the country would have been restrained in the short run had the exchange rate been shocked in line with the scenarios. Key words: Exchange rate shocks, exports, manufacturing, Ethiopia, and CGE model
Phonoritonic crystals with synthetic magnetic field for acoustic diode
Creators: name: Poshakinskiy, A. V.
name: Poddubny, A. N.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We develop a rigorous theoretical framework to describe light-sound interaction in the laser-pumped periodic multiple-quantum-well structure accounting for the hybrid phonon-polariton excitations, termed as phonoritons. We show that phonoritons exhibit the pumping-induced synthetic magnetic field in the artificial "coordinate-energy" space, that makes transmission of left- and right- going waves different. The transmission nonreciprocity allows to use such phonoritonic crystals with realistic parameters as optically controlled nanoscale acoustic diodes.
description: 5 pages, 3 figures + supplement
Semi-structured interview guide
Creators: name: Gama, Kiev
name: Lacerda, Aline
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 460803
subject: Collaborative and social computing

description: Supplementary Material for the Article "Understanding and Supporting Neurodiverse Software Developers in Agile Teams", published in the XXXVII Brazilian Symposium on Software Engineering (SBES 2023) by Kiev Gama (CIn/UFPE) and Aline Lacerda (CFCH/UFPE). This is a Semi-structured interview guide originally written in Portugueses and translated into English.
Reverse engineering nuclear properties from rare earth abundances in the $r$ process
Creators: name: Mumpower, M. R.
name: McLaughlin, G. C.
name: Surman, R.
name: Steiner, A. W.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Nuclear Theory (nucl-th)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The bulk of the rare earth elements are believed to be synthesized in the rapid neutron capture process or $r$ process of nucleosynthesis. The solar $r$-process residuals show a small peak in the rare earths around $A\sim 160$, which is proposed to be formed dynamically during the end phase of the $r$ process by a pileup of material. This abundance feature is of particular importance as it is sensitive to both the nuclear physics inputs and the astrophysical conditions of the main $r$ process. We explore the formation of the rare earth peak from the perspective of an inverse problem, using Monte Carlo studies of nuclear masses to investigate the unknown nuclear properties required to best match rare earth abundance sector of the solar isotopic residuals. When nuclear masses are changed, we recalculate the relevant $β$-decay properties and neutron capture rates in the rare earth region. The feedback provided by this observational constraint allows for the reverse engineering of nuclear properties far from stability where no experimental information exists. We investigate a range of astrophysical conditions with this method and show how these lead to different predictions in the nuclear properties influential to the formation of the rare earth peak. We conclude that targeted experimental campaigns in this region will help to resolve the type of conditions responsible for the production of the rare earth nuclei, and will provide new insights into the longstanding problem of the astrophysical site(s) of the $r$ process.
description: 34 pages, 14 figures
Effects of Customs Tariff Reduction on Ethiopian Trade and Economic Growth: A Co-integrated Var Model Approach
Creators: name: Lambebo, Desta
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2016

description: Customs tariff plays an important role in the Ethiopian trade and growth. It contributes a vital share in revenue generation needed to finance the economy. The reviewed empirical literature has indicated that the effects and contribution of customs tariff to the government budget in Ethiopia are not yet identified. Specifically, the importance of imposing customs tariff, the share of customs duty in the public revenue, its revenue productivity and its determinants are yet studied. This can negatively affect the fiscal role of customs tariff in the country and may also distort the decisions of the policymakers. For this research, secondary macroeconomic data for the period between 1975/76 and 2014/15 Ethiopian fiscal years, were collected mainly from the Ministry of Finance and Economic Cooperation (MoFEC), the Ethiopian Revenues and Customs Authority (ERCA), and additionally from other sources. Extensive theoretical and conceptual reviews, simple descriptive statistics, and co-integrated VAR model is applied to analyze the data. Accordingly, the major reasons to impose tariffs on imported goods are found to be revenue generation, protection of domestic industries, reducing the balance of payments and trade deficits, and capital formation. Simple descriptive statistics have shown that customs tariff, in the form of customs duty, has very significant share (36%, and15%)in the foreign trade taxes, and total taxes, respectively) in the Ethiopian tax structure. Although the contribution of customs duty in the Ethiopian government revenue is significant, the customs duty has been neither buoyant nor elastic. This implies that both the direct discretionary and non-discretionary measures have not yet brought the buoyancy and elasticity of the customs duty to the unitary level. The long-run equilibrium equation shows that, citrus paribus, direct and indirect domestic taxes, foreign trade taxes (FTT) and exchange rate have positive and significant impact on economic growth (GDP). Other independent variables (import, weighted average customs tariff rate, and revenue from customs duty) have a negative but significant impact on economic growth. Key words: customs tariff, customs duty, tariff liberalization, co-integrated VAR model, openness, trade, revenue productivity
Exact steady state of a Kerr resonator with one- and two-photon driving and dissipation: Controllable Wigner-function multimodality and dissipative phase transitions
Creators: name: Bartolo, Nicola
name: Minganti, Fabrizio
name: Casteels, Wim
name: Ciuti, Cristiano
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We present exact results for the steady-state density matrix of a general class of driven-dissipative systems consisting of a nonlinear Kerr resonator in the presence of both coherent (one-photon) and parametric (two-photon) driving and dissipation. Thanks to the analytical solution, obtained via the complex P-representation formalism, we are able to explore any regime, including photon blockade, multiphoton resonant effects, and a mesoscopic regime with large photon density and quantum correlations. We show how the interplay between one- and two-photon driving provides a way to control the multimodality of the Wigner function in regimes where the semiclassical theory exhibits multistability. We also study the emergence of dissipative phase transitions in the thermodynamic limit of large photon numbers.
description: 12 pages, 10 figures. Highlighted as Editors' Suggestion on Physical Review A
Effects of mechanical and chemical treatments on electrokinetic properties of cellulosic fibres
Creators: name: Bhardwaj, Nishi Kant
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Temperature dependent As K-edge EXAFS studies of LaFe1-xCoxAsO (x = 0.0 and 0.11) single crystals
Creators: name: Joseph, Boby
name: Ricci, Alessandro
name: Poccia, Nicola
name: Ivanov, Valentin G.
name: Ivanov, Andrey A.
name: Menushenkov, Alexey P.
name: Saini, Naurang L.
name: Bianconi, Antonio
Publisher: name: arXiv
Year: 2016
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We report the experimental results of temperature dependent polarized As K-edge extended x-ray absorption fine structure (EXAFS) of LaFe1-xCoxAsO (x=0.0 and 0.11) single-crystals. By aligning the Fe-As bond direction in the direction of the x-ray beam polarization we have been able to identify an anomaly in the Fe-As bond correlations at the tetragonal to orthorhombic transition at 150K, while previous investigations with standard unpolarized EXAFS of undoped LaFeAsO powder samples were not able to detect any such anomaly. Using our approach we have been able to identify in the superconducting doped sample, LaFe0.89Co0.11AsO, a broad anomaly around 60 K. The low temperature anomaly has good correlations with the temperature dependence of several properties like resistivity, magnetic susceptibility, linear thermal expansion, etc indicating the emergence of the dynamical oscillations of the Fe - As pairs
description: 7 pages, 3 figures
Sustainable Livelihood of Rural Households through Rural-Urban Linkage: In Case Study of GubaLafito Woreda, South Wollo Zone, Ethiopia
Creators: name: Tilahun, Meron
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2014

description: This study analyses the sustainable livelihood through rural urban linkage. This study was conducted with the objective of examining and studying sustainable rural livelihood through rural urban linkage in GubaLafito district. In order to achieve this objective, primary data were collected from 164 randomly selected households. For the data analysis, both descriptive and econometrics analysis were used to describe the livelihood resource/asset of the GubaLafito district and the different livelihood strategy options. The result of the study reveals that, through rural households derive a larger proportion of their income from framing, there are also different kinds of strategies they follow to improve their livelihoods, increase credit service and saving of money is important to stimulate the rural non-farm income and strengthen rural urban linkage. Physical infrastructure like road, communication and rural electrification are improves rural productivity and access for market in their village encourage the flow of people from urban to rural areas and increase the degree of rural and urban linkage between rural and urban areas. Finally, in order to strengthen rural urban linkage; agricultural development to generate surplus, strengthen marketing facilities and intensifying the physical connection are some of the critical points which is forwarded by the researcher as a recommendation.
Solar irradiance forecast from all-sky images using machine learning
Creators: name: Crisosto González, Cristian Daniel
Publisher: name: Hannover : Institutionelles Repositorium der Leibniz Universität Hannover
Year: 2023
Subjects: subject: Solar Irradiance
subject: Machine Learning
subject: Convolutional Neural Networks
subject: Bestrahlungsstärke
subject: Vorhersage
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: The novel method presented here comprises techniques for cloud coverage percentage forecasts, cloud movement forecast and the subsequently prediction of the global horizontal irradiance (GHI) using all-sky images and Machine Learning techniques. Such models are employed to forecast GHI, which is necessary to make more accurate time series forecasts for photovoltaic systems like “island solutions” for power production or for energy exchange like in virtual power plants. All images were recorded by a hemispheric sky imager (HSI) at the Institute of Meteo rology and Climatology (IMuK) of the Leibniz University Hannover, Hannover, Germany. This thesis is composed of three parts. First, a model to forecast the total cloud cover five-minutes ahead by training an autoregressive neural network with Backpropagation. The prediction results showed a reduction of both the Root Mean Square Error (RMSE) and Mean Absolute Error (MAE) by approximately 30% compared to the reference solar persistence solar model for various cloud conditions. Second, a model to predict the GHI up to one-hour ahead by training a Levenberg Marquardt Backpropagation neural network. This novel method reduced both the RMSE and the MAE of the one-hour prediction by approximately 40% under various weather conditions. Third, for the forecasting of the cloud movement up to two-minutes ahead, a high-resolution Deep Learning method using convolutional neural networks (CNN) was created. By taking real cloud shapes produced by the correction of the hazy areas considering the green signal counts pixels, predicted clouds shapes of the proposed algorithm was compared with the persistence solar model using the Sørensen-Dice similarity coefficient (SDC). The results of the proposed method have shown a mean SDC of 94 ± 2.6% (mean ± standard deviation) for the first minutes outperforming the persistence solar model with a SDC of 89 ± 3.8%. Thus, the proposed method may represent cloud shapes better than the persistence solar model. Finally, the Bonferroni's correction was performed so that the significance level of 0.05 was corrected to 0.05, and thus, the difference between the SDC of the proposed method and the persistence solar model was p = 0.001 being significantly high. The proposed methodologies may have broad application in the planning and management of PV power production allowing more accurate forecasts of the GHI minutes ahead by targeting primary and secondary energy control reserve.
Analysis and acceleration of the subspace iteration method
Creators: name: Bertolini, Adrian Francis
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Quality of service (QoS) provisioning mechanisms in fourth generation wireless All-IP networks
Creators: name: Belhoul, Ahmad
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
The CDE property for minuscule lattices
Creators: name: Hopkins, Sam
Publisher: name: arXiv
Year: 2016
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 06A07, 05E05, 05E18

description: Reiner, Tenner, and Yong recently introduced the coincidental down-degree expectations (CDE) property for finite posets and showed that many nice posets are CDE. In this paper we further explore the CDE property, resolving a number of conjectures about CDE posets put forth by Reiner-Tenner-Yong. A consequence of our work is the completion of a case-by-case proof that any minuscule lattice is CDE. We also explain two major applications of the study of CDE posets: formulas for certain classes of set-valued tableaux; and homomesy results for rowmotion and gyration acting on sets of order ideals.
description: 52 pages, 9 figures; v2: minor updates
Minimising ageing due to carbon in low carbon sheet steel with the aid of Mn, Cr, Mo or B addition
Creators: name: Bata, Vladimir
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Spectroscopy of f-f transitions, crystal-field calculations, and magnetic and quadrupole helix chirality in DyFe$_3$(BO$_3$)$_4$
Creators: name: Popova, M. N.
name: Chukalina, E. P.
name: Boldyrev, K. N.
name: Stanislavchuk, T. N.
name: Malkin, B. Z.
name: Gudim, I. A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Recently, quadrupole helix chirality and its domain structure was observed in resonant x-ray diffraction experiments on DyFe$_3$(BO$_3$)$_4$ using circularly polarized x rays [T. Usui et al., Nature Materials 13, 611 (2014)]. We show that this effect can be explained quantitatively by calculating the quadrupole moments of the Dy$^{3+}$ ions induced by the low-symmetry ($C_2$) crystal-field (CF) component. In this work, the CF parameters for the Dy$^{3+}$ ions in the $P3_121$ ($P3_221$) phase of DyFe$_3$(BO$_3$)$_4$ are obtained from CF calculations based on the analysis of high-resolution temperature-dependent optical spectroscopy data. We also consider the helix chirality of the single-site magnetic susceptibility tensors of the Dy$^{3+}$ ions in the paramagnetic $P3_121$ ($P3_221$) phase and suggest a neutron diffraction experiment to reveal it.
description: 9 pages, 5 figures, 4 tables
Data for: Mapping the ecological resilience of Atlantic postglacial heaths
Creators: name: Løvschal, Mette
name: Damgaard, Christian
Publisher: name: Zenodo
Year: 2022
Subjects: Resilience and Resistance
Affordances
areas of high conservation value
historical management practices
tree encroachment
Atlantic inland heaths
Disturbance ecology
Heathland regimes
vegetation succession
Northern Europe
eutrophication
Predictive Modelling
More-than-human relations

description: Anthropogenic heathlands are semi-cultural ecosystems with a unique cultural and biodiversity value, considered worthy of preservation across most of the world. Their rate of loss, however, is alarming. Currently, we know little about the heathlands' actual span of instability and their association with abiotic and anthropogenic factors, including how much additional intervention they need to persist. Consequently, we are missing out on vital knowledge for conservation, management, and the historical persistence of heathlands. This paper develops a method to assess the ecological resilience of Atlantic inland heaths in the absence of human management. We use 12 existing cases of heathland succession to establish a four-step resilience grade for each site, which we regress onto a series of explaining factors and use in predicting postglacial heath resilience across Atlantic Northern Europe. We find that temperature, humidity, elevation and sandiness have a positive correlation with high heathland resilience. Our predictive mapping shows an uneven distribution of ecological heath resilience across Atlantic Northern Europe within an area of 1000x1200 km of 5x5 km resolution. Compared with archaeological and palaeoecological evidence, prehistoric heathland distributions far exceed areas that afford high heath resilience, suggesting that heath distribution and persistence depends on both abiotic and anthropogenic factors. Policy implications: The predictive map can be used as an initial screening tool for managers working towards heath preservation and restoration to predict resilience, prioritize conservation, and to plan management practices across Atlantic Northern Europe. The developed model and predictive map provide an important initial screening tool to assess heathland resilience for ecologists and will help managers to prioritize conservation efforts of heathland ecosystems. The results are equally relevant for scholars who are interested in humans' role in increasing and decreasing ecosystem resilience. Moreover, we speculate that our predictive method can be applied in other regions across the world by adding regionally-specific variables.
description: Funding provided by: H2020 European Research Council
Crossref Funder Registry ID: http://dx.doi.org/10.13039/100010663
Award Number: 853356
Impact of Trade liberalization on the Government Tax Revenue of Ethiopia by Reducing the Tariff Rate: Using a Simple Computable General Equilibrium Model
Creators: name: Berhane, Kahsay
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2008

description: 1999 was the time the military regime relinquished political power and the new government took over the power. The new government initiated a wide range of reform programme some of which are directly related to trade liberalization. In this paper a two-sector, three-goods simple Computable general Equilibrium (1-2-3 CGE) model, developed by S.Devarajan et.al. at the World Bank was used to analyze the impact of trade liberalization that is the reduction of the tariff rate in three scenarion on government tax revenue and saving of Ethiopia. Moreover, it examines the coordination of domestic tax and trade tax with out affecting the total tax revenue of the country using the 1-2-3 CGE model. The simulation result of the model when reducing tariff rate is an overall decline of the government tax revenue and government saving of the country in the three different scenarios. Furthermore, by increasing domestic tax it possible compensate the loss from tariff reduction with out affecting the total government tax revenue. Keywords: Trade liberalization, Simple Computable General Equilibrium (1-2-3CGE) Model, Government tax revenue and tariff reduction.
A Legendre-Fourier spectral method with exact conservation laws for the Vlasov-Poisson system
Creators: name: Manzini, G.
name: Delzanno, G. L.
name: Vencels, J.
name: Markidis, S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: We present the design and implementation of an L2-stable spectral method for the discretization of the Vlasov- Poisson model of a collisionless plasma in one space and velocity dimension. The velocity and space dependence of the Vlasov equation are resolved through a truncated spectral expansion based on Legendre and Fourier basis functions, respectively. The Poisson equation, which is coupled to the Vlasov equation, is also resolved through a Fourier expansion. The resulting system of ordinary differential equation is discretized by the implicit second-order accurate Crank-Nicolson time discretization. The non-linear dependence between the Vlasov and Poisson equations is iteratively solved at any time cycle by a Jacobian-Free Newton-Krylov method. In this work we analyze the structure of the main conservation laws of the resulting Legendre-Fourier model, e.g., mass, momentum, and energy, and prove that they are exactly satisfied in the semi-discrete and discrete setting. The L2-stability of the method is ensured by discretizing the boundary conditions of the distribution function at the boundaries of the velocity domain by a suitable penalty term. The impact of the penalty term on the conservation properties is investigated theoretically and numerically. An implementation of the penalty term that does not affect the conservation of mass, momentum and energy, is also proposed and studied. A collisional term is introduced in the discrete model to control the filamentation effect, but does not affect the conservation properties of the system. Numerical results on a set of standard test problems illustrate the performance of the method.
description: 32 pages, 36 references, 15 figures
Bioremediation of polluted soils with petroleum hydrocarbons by four spent mushroom substrates
Creators: name: Herrero, Rafael Antón
name: Delgado, Carlos García
name: Baena, Natalia
name: Mayans, Begoña
name: Moreno, Laura Delgado
name: Eymar, Enrique
Publisher: name: Zenodo
Year: 2023

description: Poster presented by Carlos García Delgado, from the Universidad Autónoma de Madrid, during the 33rd Annual Meeting of the Society of Environmental Toxicology and Chemistry (SETAC), celebrated on April 30th - May 4th, 2023, in Dublin (Ireland).
description: This project has received funding from the LIFE Programme of the European Commission under contract number LIFE20 ENV/ES/000416.
Environmental stress cracking of polyethylene
Creators: name: Bandyopadhyay, Srikanta
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.