cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Constance von Rüden / Artemis Georgiou / Ariane Jacobs / Paul Halstead, Feasting, Craft and Depositional Practice in Late Bronze Age Palaepaphos
Creators: name: Mühlenbruch, Tobias
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2019

description: Rezension zu: Constance von Rüden / Artemis Georgiou / Ariane Jacobs / Paul Halstead, Feasting, Craft and Depositional Practice in Late Bronze Age Palaepaphos. The Well Fillings of Evreti. Bochumer Forschungen zur Ur- und Frühgeschichtlichen Archäologie Band 8. Marie Leidorf, Rahden / Westf. 2016. ISBN 978-3-86757-288-0. 428 Seiten mit 782 Abbildungen und 31 Tabellen
description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 96 2018(2019)
Studies of Mycoses in farmed estuarine crocodiles (Crocodylus porosus Schneider 1801)
Creators: name: Hibberd, Elspeth
Publisher: name: CQUniversity
Year: 2017
Subjects: classificationCode: 310999
subject: Zoology not elsewhere classified

description: Project aims to investigate the epidemiology of systemic mycotic disease in juvenile farmed estuarine crocodiles and to describe the histopathology of the infection.. The ubiquitous fungus, Fusarium solani (Mart.) Sacc., (teleomorph Nectria haematococca Berk and Broome) was frequently isolated, both superficially and systemically, from diseased juvenile farmed crocodiles, Crocodylus porosus Schneider 1801. At autopsy, various internal tissues sllowed granulomatous inflammations from which the .same fungal pathogen was readily isolated. Asymptomatic tissues were also shown to be infected. Other fungi isolated with less frequency from the animals were Paecilomyces lilacinus, Cladosporium sp. and Aspergillus sp. Infection rates at a commercial crocodile farm had reached epidemic proportions with mortality and morbidity in excess of 50% of each year's eggs and 50% of each year's hatchlings. Environmental samples showed that the pathogen was widely distributed in the farm environment. Contamination of freshly laid eggs by the pathogen was determined as the probable primary cause of infection, along with subsequent physical trauma in juveniles. Natural nesting material was implicated as a major source of egg contamination. To prevent infection of eggs, changes to procedures in the artificial incubation techniques used at the fann were carried out and a significant increase in hatchability was achieved. Treatments of diseased animals met with varying degrees of success. Attempts weremade to control the incidence of the disease by modifying husbandry practices afterinvestigation of environmental parameters. Hatchling survival was significantly improved. Standard autopsy, histological and mycological procedures were used to isolate andidentify the pathogens. Various environmental monitoring methods were employedwith a view to minimising stress on the animals. Scanning electron microscopy wasused to determine the method of access by the fungi into the eggs.
Understanding the growth mechanism of BaZrS$_3$ chalcogenide perovskite thin films from sulfurized oxide precursors
Creators: name: Ramanandan, Santhanu Panikar
name: Giunto, Andrea
name: Stutz, Elias Z.
name: Reyner, Benoit Xavier Marie
name: Lefevre, Iléane Tiphaine Françoise Marie
name: Rusu, Marin
name: Schorr, Susan
name: Unold, Thomas
name: Morral, Anna Fontcuberta i
name: Prieto, José Márquez
name: Dimitrievska, Mirjana
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Barium zirconium sulfide (BaZrS3) is an earth-abundant and environmentally friendly chalcogenide perovskite with promising properties for various energy conversion applications. Recently, sulfurization of oxide precursors has been suggested as a viable solution for effective synthesis, especially from the perspective of circumventing the difficulty of handling alkali earth metals. In this work, we explore in detail the synthesis of BaZrS3 from Ba-Zr-O oxide precursor films sulfurized at temperatures ranging from 700 °C to 1000 °C. We propose a formation mechanism of BaZrS3 based on a two-step reaction involving an intermediate amorphization step of the BaZrO3 crystalline phase. We show how the diffusion of sulfur (S) species in the film is the rate-limiting step of this reaction. The processing temperature plays a key role in determining the total fraction of conversion from oxide to sulfide phase at a constant flow rate of the sulfur-containing H2S gas used as a reactant. Finally, we observe the formation of stoichiometric BaZrS3 (1:1:3), even under Zr-rich precursor conditions, with the formation of ZrO2 as a secondary phase. This marks BaZrS3 quite unique among the other types of chalcogenides, such as chalcopyrites and kesterites, which can instead accommodate quite a large range of non-stoichiometric compositions. This work opens up a pathway for further optimization of the BaZrS3 synthesis process, straightening the route towards future applications of this material.
description: Equal contribution from the first two authors
Christin Keller, Die Rekonstruktion sozialer Gruppen der Hallstattzeit zwischen Enns und Donau
Creators: name: Wendling, Holger
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2019

description: Rezension zu: Christin Keller, Die Rekonstruktion sozialer Gruppen der Hallstattzeit zwischen Enns und Donau. Eine statistische Analyse. Berliner Archäologische Forschungen volume 14. Marie Leidorf, Rahden / Westf. 2015. ISBN 978-3-89646-524-5. 378 pages with 403 illustrations and 1 table, 1 CD-ROM
description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 96 2018(2019)
Theory of Half-Metallic Double Perovskites II: Effective Spin Hamiltonian and Disorder Effects
Creators: name: Erten, Onur
name: Meetei, O. Nganba
name: Mukherjee, Anamitra
name: Randeria, Mohit
name: Trivedi, Nandini
name: Woodward, Patrick
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Double perovskites like Sr$_2$FeMoO$_6$ are materials with half-metallic ground states and ferrimagnetic T$_{\rm{c}}$'s well above room temperature. This paper is the second of our comprehensive theory for half metallic double perovskites. Here we derive an effective Hamiltonian for the Fe core spins by "integrating out" the itinerant Mo electrons and obtain an unusual double square-root form of the spin-spin interaction. We validate the classical spin Hamiltonian by comparing its results with those of the full quantum treatment presented in the companion paper "Theory of Half-Metallic Double Perovskites I: Double Exchange Mechanism". We then use the effective Hamiltonian to compute magnetic properties as a function of temperature and disorder and discuss the effect of excess Mo, excess Fe, and anti-site disorder on the magnetization and T$_{\rm{c}}$. We conclude with a proposal to increase T$_{\rm{c}}$ without sacrificing carrier polarization.
Operation Modes of the KATRIN Experiment Tritium Loop System using $^{83\mathrm{m}}$Kr
Creators: name: Marsteller, Alexander
name: Bornschein, Beate
name: Böttcher, Matthias
name: Drahoslav, Vénos
name: Enomoto, Sanshiro
name: Fengler, Caroline
name: Machatschek, Moritz
name: Ondřej, Lebeda
name: Priester, Florian
name: Ráliš, Jan
name: Röllig, Marco
name: Röttele, Carsten
name: Schlösser, Magnus
name: Šefčík, Michal
name: Sturm, Michael
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The KArlsruhe TRItium Neutrino (KATRIN) experiment aims to search for the effective electron antineutrino mass with a sensitivity of 0.2 eV (90 % C.L.). In order to achieve this goal, KATRIN measurement phases focusing on the neutrino mass search are alternated with phases of investigations of systematic effects. During these phases, metastable $^{83\mathrm{m}}$Kr is used as a calibration source. The monoenergetic conversion electrons emitted accompanying the decay of $^{83\mathrm{m}}$Kr allow a direct access to the starting conditions of $β$-electrons produced inside the windowless gaseous tritium source (WGTS) of KATRIN. To make use of $^{83\mathrm{m}}$Kr in the WGTS, the Tritium Loop System, which provides a stable flow of tritium to the WGTS, needs to be operated in special modes. This paper focuses on the technical implementation of these modes and their performance with regard to the achievable $^{83\mathrm{m}}$Kr-rates, gas densities, and gas compositions inside the WGTS.
description: 24 pages, 13 figures
Dirk Krausse / Manuel Fernández-Götz / Leif Hansen / Inga Kretschmer, The Heuneburg and the Early Iron Age Princely Seats
Creators: name: Winger, Katja
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2019

description: Rezension zu: Dirk Krausse / Manuel Fernández-Götz / Leif Hansen / Inga Kretschmer, The Heuneburg and the Early Iron Age Princely Seats. First Towns North of the Alps. Mit Beiträgen von Christiane Schmid-Merkl, Roberto Tarpini, Elisabeth Stephan, Manfred Rösch, Elske Fischer, Gerd Stegmaiser, Bettina Arnold, Matthew L. Murray, Frieder Klein, Nicole Ebinger-Rist, Guntram Gassmann, Günther Wieland und Hans-Peter Stika. Archaeolingua, Budapest 2016. ISBN 978-963-9911-84-0. 208 Seiten mit zahlreichen Abbildungen
description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 96 2018(2019)
Hyperscaling-Violation on Probe D-Branes
Creators: name: Ammon, Martin
name: Kaminski, Matthias
name: Karch, Andreas
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: For the field theories dual to D3/D7- and D3/D5-brane systems we find non-relativistic finite density fixed points exhibiting a violation of hyperscaling. This violation is measured by the critical exponent $θ=1$ while the dynamical critical exponent is $z=2$. At zero temperature we compute the thermodynamic potentials, the speed of normal sound, and the speed of zero sound for both these massive D3/D(2n+1)-brane systems near their non-relativistic fixed points. Moreover, we determine the first correction to the free energy for small temperatures yielding the critical exponents $α$ and $ν$.
description: v1: 22 pages, 1 figure; v2: 23 pages, references added, extended introduction
Barbara Hausmair, Am Rande des Grabes. Todeskonzepte und Bestattungsritual in der frühmittelalterlichen Alamannia
Creators: name: Gutsmiedl-Schümann, Doris
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2019

description: Rezension zu: Barbara Hausmair, Am Rande des Grabes. Todeskonzepte und Bestattungsritual in der frühmittelalterlichen Alamannia. Sidestone Press, Leiden 2015. ISBN 978-90-8890-295-6. (Hardback). ISBN 978-90-8890-295-6. (Paperback). 367 pages with 117 figures,14 tables, and a digital appendix with additional 232 tables
description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 96 2018(2019)
Anne Klammt, Die Standorte unbefestigter Siedlungen der nördlichen Elbslawen
Creators: name: Pedersen, Anne
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2019

description: Rezension zu: Anne Klammt, Die Standorte unbefestigter Siedlungen der nördlichen Elbslawen. Zwischen Klimaveränderung und politischem Wandel. Universitätsforschungen zur prähistorischen Archäologie volume 277. Dr. Rudolf Habelt, Bonn 2015. ISBN 978-3-7749-4004-8. 294 pages with 128 in b/w-illustrations, 128 tables, 12 survey maps in colour, CD-ROM with catalogue, lists and maps
description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 96 2018(2019)
Microcredit and empowering women in Bangladesh : stunning promises without substance
Creators: name: Rahman, T
Publisher: name: CQUniversity
Year: 2017
Subjects: classificationCode: 389999
subject: Other economics not elsewhere classified

description: Microcredit, a Bangladeshi development model, has become a mantra and a magic potion for all illness of the poor including poverty, malnutrition, illiteracy, and powerlessness. Many of the powerful, rich and famous - liberals like Hillary Clinton, neoconservatives like Paul Wolfowitz (now president of the World Bank), commercial banking institutions like the Chase Manhattan and American Express - actively promote this panacea. Several UN agencies and European development aid agencies far beyond the Bangladeshi border are also involved in implementing microcredit. Muhammad Yunus, the founder ofthe Grameen Bank, was awarded the Nobel Peace Prize for developing, practicing and promoting microcredit. There is no doubt that microcredit has 'indeed allowed many poor women to roll back pervasive poverty', but at the same time it can be said confidently that many of the poor within the microcredit program are left with extended threat of poverty. Critical scholarship on the microcredit model is limited, but emerging steadily. Among critical scholars are postdevelopmentalists, who examine the transformation occurring within the 'self' of the microcredit recipients, and Marxists, who examine gradual expansion of the free market economy in Third World societies within the context of global capitalism. The postdevelopmentalists argue that the surveillance strategies that are placed to monitor the working of micro credit surely transform the subjectivity ofthe microcredit recipients and this transformation is somewhat similar to the process that occurred in Western societies at the start of the Industrial Revolution. Marxists scholars generally examine the contemporary gradual expansion of private investment in the welfare sector, which was traditionally a state monopoly. They argue that the private interventionist approach enables the state to avoid its responsibility to provide welfare for the poor. This thesis investigates the claims of success of microcredit as a panacea, as well as the critical views expressed by focusing on the experiences o fmicrocredit recipients in two villages in Bangladesh. Based on a long term participatory observation method, the thesis argues that the success stories of the microcredit program are blown out of proportion. The dynamics of collective responsibility for repayment of loans by a group of women borrowers, which is seen as a tool for success of microcredit, is in fact no less repressive than the traditional debt collectors. This thesis considered both of the theoretical perspectives mentioned above, and finds that microcredit does produce a kind ofdisciplined self but the microcredit recipients also employ their own agency in resistance towards the disciplinary power. It also finds that the neoliberal policy of privatisation of welfare enables capitalism to extend its control to the poorest, most deprived of the world.
Andrzej Kokowski / Wieńcysław Niemirowski, Na tropie zaginionych odkryć
Creators: name: Grunwald, Susanne
Publisher: name: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts
Year: 2019

description: Rezension zu: Andrzej Kokowski / Wieńcysław Niemirowski, Na tropie zaginionych odkryć. Archeologia w świetle doniesień prasowych z dawnej prowincji Grenzmark – Posen-Westpreußen. Auf den Spuren von verlorenen Entdeckungen. Die Archäologie im Spiegel der Presse der ehemaligen Provinz Grenzmark – Posen-Westpreußen. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej, Lublin 2016. ISBN 978-83-7784-762-6. 567 pages, 3 tables
description: Germania : Anzeiger der Römisch-Germanischen Kommission des Deutschen Archäologischen Instituts, Bd. 96 2018(2019)
A real time code generator for power electronic applications and implementation of PWM converter control strategies
Creators: name: Sadasiva, I
Publisher: name: CQUniversity
Year: 2023
Subjects: classificationCode: 400799
subject: Control engineering, mechatronics and robotics not elsewhere classified

description: The aim of this project was to develop a Real Time Code Generator for power electronic control applications with a graphical input medium from the simulation software'Simulink'. The Real Time Code Generator (RTCG) converts the block diagram model into 'C' code. The generated code is targeted to the Digital Signal Processor based controller board. The RTCG is mainly suited for power electronic control applications in real time. It gives the user a complete control over the hardware functionality and the sequence of the program. Complex control strategies can be implemented in the space of a week whereas conventional programming would have taken months to be completed. Also, the engineer need not have an indepth knowledge of 'C' programming. The RTCG was used to control a 10 kW PWM rectifier. Different types of control systems were implemented on the PWM rectifier using the RTCG. The DSI102 Digital Signal Processor based board is the controller for the RTeG. It is manufactured by dSpace GmbH. It is an independent add-on card for IBM PC's. DS1102 card contains two state-of-the-art Texas Instruments DSP processors; the TMS320C31 and the TMS320P14. The different control techniques are the predictive current control, model based control and the vector current control. Using these control techniques, the PWM rectifier was able to transfer power bidirectionally at unity power factor with a regulated DC link voltage. Briefly, the predictive current control brings the actual current equal to the demand current in one switching cycle. The vector current control is almost as good as the predictive current control but it takes approximately three switching cycles to bring the actual current equal to the demand current. The model based control removes the ripple usually present in the output of the conventional rectifier. The predictive current control or the vector current control can be used in conjunction with the model based control.
Using genetic and evolutionary algorithms to solve boundary control problems in soil-water-plant interaction
Creators: name: Sturgess, David
Publisher: name: CQUniversity
Year: 2017
Subjects: classificationCode: 460299
subject: Artificial intelligence not elsewhere classified
classificationCode: 461302
subject: Computational complexity and computability
classificationCode: 410699
subject: Soil sciences not elsewhere classified

description: In this thesis we investigate how modern artificial intelligent techniques, namely the genetic algorithm /evolutionary algorithm can be applied to find irrigation strategies for a cropped soil. We begin by providing an introductory chapter detailing the work that is to be carried out and the results obtained from research. In Chapter 2 we introduce some basic concepts of soil physics in order to give an understanding of the nature of soil composition and the movement of water within a cropped soil. We then summarise background research undertaken by Terry Janz in his Masters Thesis which shows how an irrigation schedule can be obtained using classical methods to solve the Richards' flow equation with realistic parameters and field data. Genetic and evolutionary algorithms are introduced in Chapter 3; their algorithmic structure is defined and contrasted with classic search techniques. In Chapter 4 we apply a genetic algorithm to the problem posed in Chapter 2 to obtain a schedule of irrigation defined as a sequence of irrigation on and irrigation off switches, to control moisture content at specific levels at certain depths within the soil, so that "nutrient uptake" by the root can be maximised. The problem posed is the classical optimal control problem in which the tracking of a desired set of final states is to be achieved. Finally in Chapter 5, we undertake an initial research study into how an evolutionary algorithm can be applied to solve the tracking problem associated with boundary control of a parabolic distributed process. The problem is first transformed into a classical optimal control problem with ordinary differential equations as differential constraints, by using the method of semi-discretisation, or method of lines. Our results are compared with classical techniques commonly used to solve this type of problem, including the finite element method which uses full discretisation of both the state and time variables. It is shown that it is feasible to apply evolutionary learning to problems of boundary control which arise in determining realistic irrigation strategies.
Covariance matrices under Bell-like detections
Creators: name: Spedalieri, Gaetana
name: Ottaviani, Carlo
name: Pirandola, Stefano
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: Mathematical Physics (math-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We derive a simple formula for the transformation of an arbitrary covariance matrix of (n+2) bosonic modes under general Bell-like detections, where the last two modes are combined in an arbitrary beam splitter (i.e., with arbitrary transmissivity) and then homodyned. In particular, we consider the realistic condition of non-unit quantum efficiency for the homodyne detectors. This formula can easily be specialized to describe the standard Bell measurement and the heterodyne detection, which are exploited in many contexts, including protocols of quantum teleportation, entanglement swapping and quantum cryptography. In its general form, our formula can be adopted to study quantum information protocols in the presence of experimental imperfections and asymmetric setups, e.g., deriving from the use of unbalanced beam splitters.
description: Results are extended to detectors with non-unit quantum efficiency. REVTeX. 9 pages. 4 figures
Expanding HCXAI in the Age of AI Agents: Challenges and Recommendations
Creators: name: Ferrario, Andrea
Publisher: name: Zenodo
Year: 2025
Subjects: generative AI
AI agents
large language models
human-centered explainable AI

description: AI agents—autonomous, multi-tasking systems beyond traditional AI—will reshape human-AI interaction shifting the focus from a simple human-versus-system autonomy debate to a triadic model: human users, AI agents, and digital resources. Further, the widespread adoption of agentic systems as consumer products will accelerate the large-scale integration of novel human-AI agent hybridization into everyday life, necessitating renewed examinations of agent identity, accountability, and trust in AI agent-rich digital environments. In this position paper, we argue that HumanCentered eXplainable AI (HCXAI) can help addressing these trends by developing causal explanations that span multiple levels of abstraction and integrate different digital resources, as well as personalized, interactive explanations that serve as identity warranty mechanisms when humans and AI agents interact together and with other digital resources. Finally, as a research field, HCXAI can help redesign the explainability-trust relation in these novel digital ecosystems. We introduce examples of these explanations, calling for an interdisciplinary collaboration to refine these high-level proposals and ensure a still human-centered digital future.
Detecting genuine multipartite entanglement of pure states with bipartite correlations
Creators: name: Markiewicz, Marcin
name: Laskowski, Wieslaw
name: Paterek, Tomasz
name: Zukowski, Marek
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Monogamy of bipartite correlations leads, for arbitrary pure multi-qubit states, to simple conditions able to indicate various types of multipartite entanglement by being capable to exclude the possibility of k-separability.
description: journal version
Development of a novel harvester for grass seeds and cereal crops
Creators: name: John, L
Publisher: name: CQUniversity
Year: 2017
Subjects: classificationCode: 300499
subject: Crop and pasture production not elsewhere classified

description: Involves study of the grass seed industry in Central Queensland by conducting a market survey to determine the existing mechanisation in the seed industry and the problems faced by farmers. The main aim of the study is the design of an improved, effective grass seed harvester.. This research project sponsored by the Centre for Agricultural Technology(CAT) is seen as assistance to the Agricultural and Beef Industries which are among the major contributing industries to the Australian economy. The project involves a study of the grass seed industry in Central Queensland by conducting a market survey to determine the existing mechanisation in the seed industry and the problems faced by this group of farmers. The main aim of the study was to arrive at a design of an improved and more effective novel grass seed harvester, specifically designed by considering all the characteristics unique to grass seeds and the details which earlier research had indicated would help to increase the quality and the total yield, from the current 40-60% to about 80-95%. Earlier research on an air-assisted brush type of harvester indicated the problem of having to draw the seeds through the fan before separation. This seemed to cause trauma to the seeds which revoked the seed germination capacity. This research work has therefore been focused on designing a seed separator to be located ahead of the fan which could successfully separate the seeds of various shapes and sizes, from the large volume of conveying air required for suction, before entering the fan. A curved duct concentrator and a uniflow cyclone were selected as part of the experimental work and a theoretical approach was developed to understand and define the problems unique to the separation of the grass seeds. The results of tllese experiments and their comparison with the previous existing separators and harvesters have been discussed in this thesis. The technique for fan design for the harvester and finally the design specifications of a self driven harvester and a tractor mounted harvester were developed by incorporating all the harvester units, i.e the header unit, the separator and the fan.
Sub-millimetre wave range-Doppler radar as a diagnostic tool for gas-solids systems -- solids concentration measurements
Creators: name: Bonmann, Marlene
name: Guío-Pérez, Diana Carolina
name: Bryllert, Tomas
name: Pallarès, David
name: Seemann, Martin
name: Johnsson, Filip
name: Stake, Jan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Current non-intrusive measurement techniques for characterising the solids flow in gas-solids suspensions are limited by the low temporal or low spatial resolution of the sample volume, or in the case of optical methods, by a short range of sight. In this work, a sub-millimetre wave range-Doppler radar is developed and validated for non-intrusive sensing of solids concentrations in a gas-solids particle system with known characteristics. The radar system combines favourable features, such as the ability to see through at optical frequencies opaque materials, to measure the local solids velocity and the reflected radar power with a spatial resolution of a few cubic centimetres over distances of a few metres. This paper introduces a method to relate the received radar signal power to the solids volumetric concentrations (cv) of different particulate materials. The experimental set-up provides a steady stream of free-falling solids that consist of glass spheres, bronze spheres or natural sand grains with known particle size distributions and with particle diameters in the range of 50-300 $μ$m. Thus, the values of cv found using the radar measurements are validated using the values of cv retrieved from closure of the mass balance derived from the measured mass flow rate of the solids stream and the solids velocity. The results show that the radar system provides reliable measurements of cv, with a mean relative error of approximately 25% for all the tested materials, particle sizes and mass flow rates, yielding values of cv ranging from 0.2x10$^{-4}$ m$^{3}$/ m$^{3}$ up to 40x10$^{-4}$ m$^{3}$/ m$^{3}$ and solids velocities within the range of 0-4.5 m/s. This demonstrates the ability of the radar technology to diagnose the solids flow in gas-solids suspensions using a unique combination of penetration length, accuracy, and spatial and velocity resolution.
description: submitted to Advanced Powder Technology Elsevier
Incorporating Modulation Information into Deep Neural Networks for Robust Speech Processing
Creators: name: Vuong, Tyler
Publisher: name: Carnegie Mellon University
Year: 2023
Subjects: classificationCode: 90699
subject: Electrical and Electronic Engineering not elsewhere classified

description: Interacting with speech-related technologies has become an integral part of our everyday lives. Whether suppressing background noise during a remote video meeting at home or using one’s voice to interact with a smart device in the presence of other sounds, it is essential for speech processing systems to be robust to the presence of background interference. Although the current data-driven speech-processing systems have shown tremendous improvements in recent years, their performance in the presence of background noise and other types of degradation is still substantially worse than the corresponding performance with clean input speech. To bridge this gap, this thesis describes several novel ways of applying spectral-temporal receptive fields (STRFs) to integrate modulation information into deep neural networks (DNN) and improve the robustness of speech processing systems. STRFs respond to a range of patterns of temporal modulation and spectral modulation and are motivated by structures that are believed to describe processing in the brainstem and the auditory cortex. We first develop a learnable front end that leverages deep learning to discover insights about the important temporal modulations in speech. We find that low temporal modulations are important for speech activity detection, which is consistent with the results of prior research. We design a loss function that has the objective of preserving the important modulations in speech. This loss function is used to guide the training of deep-learning-based speech enhancement systems. We obtain the important modulation parameters through the use of a neural network layer parameterized as a learnable STRF. Finally, we show that the incorporation of the learnable STRFs into DNN-based speech processing systems improves robustness performance for multiple downstream tasks including speech recognition, voice type discrimination, and speech activity detection.
A knowledge-based decision support system for portfolio investment
Creators: name: Li, CY
Publisher: name: CQUniversity
Year: 2017
Subjects: classificationCode: 469999
subject: Other information and computing sciences not elsewhere classified

description: Project investigates an intelligent decision support system on stock portfolio investment - the Portfolio Investment Decision Support System (PIDSS). There are a number of knowledge-based systems and decision support systems in the finance domain. Knowledge-based systems and decision support systems can also be combined in intelligent decision support systems, which result in more desirable features. In this research project, an intelligent decision support system on stock portfolio investment, the Portfolio Investment Decision Support System (PIDSS), was developed and evaluated. The main themes of investigation were: (i) the system architecture of an intelligent decision support system, (ii) the use of PIDSS as a learning tool, and (iii) comparison of PIDSS with other financial advising systems. PIDSS was developed under a Personal Computer Windows platform with Visual Basic and PROLOG. The domain expertise was stock portfolio investment, based on Modem Portfolio Theory and the Capital Asset Pricing Model. PIDSS was trialed with Finance students at Central Queensland University. Data was gathered using questionnaires and interviews. With its graphical representation and explanation facility, PIDSS was found to be helpful for students' learning. This was consistent with previous research in educational software. PIDSS also appeared to have potential to be further developed as a professional tool. A number of areas relating to functionality and system architecture efficiency were identified, however, as additional improvement.
Incomplete devil's staircase in the magnetization curve of SrCu2(BO3)2
Creators: name: Takigawa, Masashi
name: Horvatić, Mladen
name: Waki, Takeshi
name: Krämer, Steffen
name: Berthier, Claude
name: Lévy-Bertrand, Florence
name: Sheikin, Ilya
name: Kageyama, Hiroshi
name: Ueda, Yuytaka
name: Mila, Frederic
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We report on NMR and torque measurements on the frustrated quasi-two-dimensional spin-dimer system SrCu2(BO3)2 in magnetic fields up to 34 T that reveal a sequence of magnetization plateaus at 1/8, 2/15, 1/6, and 1/4 of the saturation and two incommensurate phases below and above the 1/6 plateau. The magnetic structures determined by NMR involve a stripe order of triplets in all plateaus, suggesting that the incommensurate phases originate from proliferation of domain walls. We propose that the magnetization process of SrCu2(BO3)2 is best described as an incomplete devil's staircase.
description: 21 pages, 9 figures (main: 12 pages, 4 figures/supplemental material: 9 pages, 5 figures)
Differential dynamic programming and optimal control of inequality constrained continuous dynamic systems
Creators: name: Ruxton, David
Publisher: name: CQUniversity
Year: 2017
Subjects: classificationCode: 490105
subject: Dynamical systems in applications
classificationCode: 490409
subject: Ordinary differential equations, difference equations and dynamical systems
classificationCode: 461399
subject: Theory of computation not elsewhere classified

description: In this thesis, the development of the differential dynamic programming (DDP) algorithm is extensively reviewed from its introduction to its present status. Following this review, the DDP algorithm is shown to be readily adapted to handle inequality constrained continuous optimal control problems. In particular, a new approach using multiplier penalty functions implemented in conjunction with the DDP algorithm, is introduced and shown to be effective. Emphasis is placed on the practical aspects of implementing and applying DDP algorithm variants. The new DDP and multiplier penalty function algorithm variant is then tested and compared with established DDP algorithm variants as well as another numerical method before being applied to solve a problem involving the control of a robot arm in the plane.
Statistical mechanics of graph models and their implications for emergent spacetime manifolds
Creators: name: Chen, Si
name: Plotkin, Steven S.
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Inspired by "quantum graphity" models for spacetime, a statistical model of graphs is proposed to explore possible realizations of emergent manifolds. Graphs with given numbers of vertices and edges are considered, governed by a very general Hamiltonian that merely favors graphs with near-constant valency and local rotational symmetry. The ratio of vertices to edges controls the dimensionality of the emergent manifold. The model is simulated numerically in the canonical ensemble for a given vertex to edge ratio, where it is found that the low-energy states are almost triangulations of two-dimensional manifolds. The resulting manifold shows topological "handles" and surface intersections in a higher embedding space, as well as non-trivial fractal dimension consistent with previous spectral analysis, and nonlocal links consistent with models of disordered locality. The transition to an emergent manifold is first order, and thus dependent on microscopic structure. Issues involved in interpreting nearly-fixed valency graphs as Feynman diagrams dual to a triangulated manifold as in matrix models are discussed. Another interesting phenomenon is that the entropy of the graphs are super-extensive, a fact known since Erdős, which results in a transition temperature of zero in the limit of infinite system size: infinite manifolds are always disordered. Aside from a finite universe or diverging coupling constraints as possible solutions to this problem, long-range interactions between vertex defects also resolve the problem and restore a nonzero transition temperature, in a manner similar to that in low-dimensional condensed-matter systems.
description: 21 pages, 20 figures, 1 table; v2: References added; Figure added; Discussion expanded; v3: minor corrections, published version
Lifshitz gauge duality
Creators: name: Radzihovsky, Leo
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Motivated by a variety of realizations of the compact Lifshitz model I derive its fractonic gauge dual. The resulting U(1) vector gauge theory efficiently and robustly encodes the restricted mobility of its dipole conserving charged matter and the corresponding topological vortex defects. The gauge theory provides a transparent formulation of the three phases of the Lifshitz model and gives a field theoretic formulation of the associated two-stage Higgs transitions.
description: 7 pages
Acceleration of particles by quasiblack holes
Creators: name: Zaslavskii, O. B.
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: If two particles collide near the black hole horizon, the energy in the centre of mass (CM) frame can grow indefinitely (the so-called the BSW effect). This requires fine-tuning the parameters (the energy, angular momentum or electric charge) of one particle. We show that the CM energy can be unbound also for collisions in the space-time of quasiblack holes - QBHs (the objects on the threshold of forming the horizon which do not collapse). It does not require special fine-tuning of parameters and occurs when any particle inside a QBH having a finite energy collides with the particle that entered a QBH from the outside region.
description: 8 pages. Final version
Vortex-Bright Soliton Dipoles: Bifurcations, Symmetry Breaking and Soliton Tunneling in a Vortex-Induced Double Well
Creators: name: Pola, M.
name: Stockhofe, J.
name: Kevrekidis, P. G.
name: Schmelcher, P.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: The emergence of vortex-bright soliton dipoles in two-component Bose-Einstein condensates through bifurcations from suitable eigenstates of the underlying linear system is examined. These dipoles can have their bright solitary structures be in phase (symmetric) or out of phase (anti-symmetric). The dynamical robustness of each of these two possibilities is considered and the out-of-phase case is found to exhibit an intriguing symmetry-breaking instability that can in turn lead to tunneling of the bright wavefunction between the two vortex "wells". We interpret this phenomenon by virtue of a vortex-induced double well system, whose spontaneous symmetry breaking leads to asymmetric vortex-bright dipoles, in addition to the symmetric and anti-symmetric ones. The theoretical prediction of these states is corroborated by detailed numerical computations.
description: 14 pages, 8 figures
Dynamic Spectra Sequence Modelling with Transformers
Creators: name: Yek, Zach
name: Croft, Steve
name: Chen, Yuhong
Publisher: name: Zenodo
Year: 2021
Subjects: SETI, Machine Learning, Deep Learning, Sequence Modelling

description: Breakthrough Listen has a great abundance of data containing many hidden signals. The vast amount of (unlabeled) data lends itself to an exciting potential for unsupervised and/or self-supervised learning. In the past, we’ve leveraged mostly Computer Vision-based approaches for classification, feature extraction, and clustering. These were motivated by the fact that Computer Vision techniques are made to pick out visual features like straight lines (narrowband drifting signals) and curves (fast radio bursts). However, these attempts overlook the fact that dynamic spectra are inherently sequential, and that the two axes of the data (time and frequency) are not interchangeable. In other words, the spectrum at one timestep has a strong correlation to the spectra from the timesteps immediately preceding it. With that in mind, we present our results from training one such sequence model - the Transformer, on dynamic spectra, and compare its performance on various downstream tasks to previous models.
Irrigation scheduling : a mathematical model for water movement in cropped soils incorporating sink term and evaporation front
Creators: name: Janz, T
Publisher: name: CQUniversity
Year: 2017
Subjects: classificationCode: 461306
subject: Numerical computation and mathematical software

description: The principles of using mathematical models to describe processes involved in the movement of water in soils are surveyed from the literature. Various models are considered within a classification system based on the degree of empiricism or mechanism of the approach. Empirical models are compared and contrasted with mechanistic models and the role of these models in agricultural practice is discussed. A new empirical mathematical model to describe the uptake of water by plant roots is developed through a sink term and combined with well established models including the Richards' equation to provide a paradigm for the movement of water throughout the soil/plant system. Methods of solution of the model are considered and a finite difference method is employed to provide a computer implementation of the solutions under a range of initial and boundary conditions. The computer simulation was found to be easily adapted to a variety of field situations. In particular, the introduction of the 'evaporation front' concept and its embodiment in the new sink term, provide insights into the criteria for scheduling irrigations, laying the basis for field verification and investigation. The use of this mathematical model for determining an optimal irrigation regime is discussed in relation to conventional scheduling methods.
Tafeln
Creators: name: Redaktion, Die
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2019

description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 3 Nr. 11 (1950): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Mutation and SARS-CoV-2 strain competition under vaccination in a modified SIR model
Creators: name: Ahumada, M.
name: Ledesma-Araujo, A.
name: Gordillo, Leonardo
name: Marín, Juan F.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Populations and Evolution (q-bio.PE)
subject: Chaotic Dynamics (nlin.CD)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: The crisis caused by the COVID-19 outbreak around the globe raised an increasing concern about the ongoing emergence of variants of SARS-CoV-2 that may evade the immune response provided by vaccines. New variants appear due to mutation, and as the cases accumulate, the probability of the emergence of a variant of concern increases. In this article, we propose a modified SIR model with waning immunity that captures the competition of two strain classes of an infectious disease under the effect of vaccination with a highly contagious and deadly strain class emerging from a prior strain due to mutation. When these strains compete for a limited supply of susceptible individuals, changes in the efficiency of vaccines may affect the behaviour of the disease in a non-trivial way, resulting in complex outcomes. We characterise the parameter space including intrinsic parameters of the disease, and using the vaccine efficiencies as control variables. We find different types of transcritical bifurcations between endemic fixed points and a disease-free equilibrium and identify a region of strain competition where the two strain classes coexist during a transient period. We show that a strain can be extinguished either due to strain competition or vaccination, and we obtain the critical values of the efficiency of vaccines to eradicate the disease. Numerical studies using parameters estimated from publicly reported data agree with our theoretical results. Our mathematical model could be a tool to assess quantitatively the vaccination policies of competing and emerging strains using the dynamics in epidemics of infectious diseases.
description: 28 pages, 8 figures
The construction of gender, sexuality and desire in Italo Calvino's works
Creators: name: Wooller, Judith
Publisher: name: CQUniversity
Year: 2021
Subjects: classificationCode: 470526
subject: Other literatures in English

description: Many feminists argue that postmodernism is gender blind and that the deconstruction of meta-narratives by postmodemism does not extend to the gender roles. In order to test that statement this dissertation will examine four texts written by the lauded postmodernist novelist, ltalo Calvina. The major focus will be on the construction of gender, sexuality and desire within a selection of Calvina's texts covering a thirty year time span. The texts were chosen arbitrarily commencing with one of Calvino's early texts, Difficult loves, which is a classic realist text. The next Baron in the trees is the middle novella of Our Ancestors, and is representative of the fantastic/fairy story genre. The final two texts Invisible Cities and If on a winter's night a traveller, move into the modernist/postmodernist forms. An examination of the postmodernist/feminist debate will be undertaken in order to provide a methodology. This debate reveals the differences between these two radical groups and the critique of postmodernism by feminists such as Luce Irigaray, Elizabeth Grosz, Patricia Waugh and others will serve as a framework by which to examine the texts. The focus of this dissertation, while engaging with postmodern concerns, will be on the lack of contestation of the gender roles within Calvina's works. While it can be argued that his texts progressively point to the construction of knowledge and meaning; the displacement of subject positions and the instability of narrative authority, there is no similar problematization of female subjectivity, sexuality and desire as these have been traditionally constructed within patriarchy. Calvino, like many postmodem writers, does not contest gender roles or when he does, it is superficial and from a masculinist point of view.