cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Mott transition and magnetism on the anisotropic triangular lattice
Creators: name: Acheche, S.
name: Reymbaut, A.
name: Charlebois, M.
name: Sénéchal, D.
name: Tremblay, A. -M. S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Spin-liquid behavior was recently suggested experimentally in the moderately one-dimensional organic compound $κ$-H$_3$(Cat-EDT-TTF)$_2$. This compound can be modeled by the one-band Hubbard model on the anisotropic triangular lattice with $t^\prime/t \simeq 1.5$, where $t'$ is the minority hopping. It thus becomes important to extend previous studies, that were performed in the range $0 \leq t'/t \leq 1.2$, to find out whether there is a regime where Mott insulating behavior can be found without long-range magnetic order. To this end, we study the above model in the range $1.2 \leq t'/t \leq 2$ using cluster dynamical mean-field theory (CDMFT). We argue that it is important to choose a symmetry-preserving cluster rather than a quasi one-dimensional cluster. We find that, upon increasing $t'/t$ beyond $t^\prime/t \approx 1.3$, the Mott transition at zero-temperature is replaced by a first-order transition separating a metallic state from a collinear magnetic insulating state. Nevertheless, at the physically relevant value $t^\prime/t \simeq 1.5$, the transitions toward the magnetic and the Mott insulating phases are very close. The phase diagram obtained in this study can provide a working basis for moderately one-dimensional compounds on the anisotropic triangular lattice.
description: LaTeX, 7 pages, 5 figures
Approximate response of rigid-hardening structures
Creators: name: Liu, Chong Yew.
Publisher: name: Monash University
Year: 2022

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.
Cosmic Strings Stabilized by Quantum Fluctuations
Creators: name: Weigel, H.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We compute fermion quantum corrections to the energy of cosmic strings. A number of rather technical tools is needed to formulate this correction and we employ isospin and gauge invariance to verify consistency of these tools. These corrections must also be included when computing the energy of strings that are charged by populating fermion bound states in its background. We find that charged strings are dynamically stabilized in theories similar to the standard model of particle physics.
description: 5 pages, contributed to the proceedings of the international workshop "Strong Field Problems in Quantum Theory", Tomsk, Russia, June, 2016
Uncertainty in predicting the uptake of domestic energy efficiency measures: the case of the Green Deal
Creators: name: Sample, Karl
Publisher: name: Loughborough University
Year: 2020
Subjects: subject: 129999 Built Environment and Design not elsewhere classified
subject: FOS: Civil engineering

description: The Green Deal was the flagship energy policy of the Conservative and Liberal Democrat coalition Government (2010-2015). The scheme was designed to give loans to households who would otherwise not be able to afford the installation cost, thus removing one of the most commonly reported barriers. The key to the Green Deal was that the householder would, notionally, never pay back more in loan repayments than they were saving on their energy bills. This was known as the Golden Rule.
Public interest in the Green Deal however was muted, and, following a lacklustre uptake following the launch in January 2013, the scheme was scrapped in July 2015. This low level of uptake seemed at odds with the predictions that DECC made prior to the launch, including in the Green Deal and ECO Final Stage Impact Assessment (GDFIA) (DECC, 2012b).
This research set out to investigate how and why the differences between the prediction of uptake and the actual uptake were so different. Following DECC’s refusal to release the Green Deal Household Model (GDHM) for use within this research, information in the public domain and that gathered via correspondence was used to create a set of archetypes which were as close as possible to that used in the GDHM. Then, the Cambridge Housing Model (CHM) was used to estimate the energy savings for each of the archetypes under different retrofit scenarios before they were entered into an uptake model created for this research. The created uptake model aimed to replicate the published predictions of uptake.
It was found that the published documentation provided inadequate information for an effective recreation to occur, and therefore undergo rigorous scrutiny. Sensitivity and uncertainty analyses were carried out on the created uptake model and showed that, due to the uncertainty ranges on the inputs, the range of predicted uptakes was very large; yet, the most probable level of uptake was very low for all measures.
Analysis of DIS structure functions of the nucleon within truncated Mellin moments approach
Creators: name: Kotlorz, D.
name: Kotlorz, A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present generalized evolution equations and factorization in terms of the truncated Mellin moments (TMM) of the parton distributions and structure functions. We illustrate the $x$ and $Q^2$ dependence of TMM in the polarized case. Using the TMM approach we compare the integrals of $g_1$ with HERMES and COMPASS data from the limited $x$-ranges.
description: 9 pages, 10 figures
Flow of viscoelastic fluids through packed beds
Creators: name: Moreno, Luzviminda Borillo.
Publisher: name: Monash University
Year: 2022

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.
On Subthreshold Ionization of Helium Droplets, Ejection of He+, and the Role of Anions
Creators: name: Renzler, Michael
name: Daxner, Matthias
name: Weinberger, Nikolaus
name: Denifl, Stephan
name: Scheier, Paul
name: Echt, Olof
Publisher: name: arXiv
Year: 2016
Subjects: subject: Atomic and Molecular Clusters (physics.atm-clus)
subject: FOS: Physical sciences

description: The mechanism of ionization of helium droplets has been investigated in numerous reports but one observation has not found a satisfactory explanation: How are $He^+$ ions formed and ejected from undoped droplets at electron energies below the ionization threshold of the free atom? Does this path exist at all? A measurement of the ion yields of $He^+$ and $He_2^+$ as a function of electron energy, electron emission current, and droplet size reveals that metastable $He^{*-}$ anions play a crucial role in the formation of free $He^+$ at subthreshold energies. The proposed model is testable.
Mengenal (ulang) Sains Terbuka
Creators: name: Ratodi, Muhamad
Publisher: name: Zenodo
Year: 2020
Subjects: open sciences
sains terbuka

description: Materi tentang Sains Terbuka yang disampaikan di kegiatan Kampung Jurnal Indonesia 2020 Universitas Muhammadiyah Ponorogo
title: Kryptoassets im Lichte des Verbraucherschutzes
Creators: name: Schweidler, Gerald
Year: 2023

description: Kryptoassets wie Bitcoin, Ethereum aber auch digitale Kunstwerke und Smart Contracts auf Blockchain-Anwendung haben in den letzten Jahren großen Zustrom erfahren. Dabei sind die Anwendungsmöglichkeiten noch bei weitem nicht ausgeschöpft. Allerdings gibt es bei Anlegern, insbesondere Verbrauchern, große Unsicherheiten hinsichtlich ihrer Rechte im Umgang mit Kryptoassets. Ziel der Arbeit ist, für die wesentlichen Kryptoasstes einen Überblick nach ihrer wirtschaftlichen Verwendung zu geben sowie sie rechtlich einzuordnen. Im Zentrum steht die Prüfung der zahlreichen verbraucherrechtlichen Bestimmungen (u.a. KSchG, FAGG, ECG, FernFinG, ABGB, Prospekt-VO, KMG 2018 und FM-GwG) auf die Anwendbarkeit bei unterschiedlichen Kryptoassets. Sachverhalte iZm Kryptoassets überschreiten häufig nationale Grenzen, weshalb auch das internationale Privatrecht, mit den Fragen nach dem zuständigen Gericht, anzuwendenden Recht und den Möglichkeiten der Rechtsdurchsetzung, Beachtung finden muss.
Semi Automatic Color Segmentation of Document Pages
Creators: name: Bres, Stéphane
name: Eglin, Véronique
name: Poulain, Vincent
Publisher: name: arXiv
Year: 2016
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: -This paper presents a semi automatic method used to segment color documents into different uniform color plans. The practical application is dedicated to administrative documents segmentation. In these documents, like in many other cases, color has a semantic meaning: it is then possible to identify some specific regions like manual annotations, rubber stamps or colored highlighting. A first step of user-controlled learning of the desired color plans is made on few sample documents. An automatic process can then be performed on the much bigger set as a batch. Our experiments show very interesting results in with a very competitive processing time.
Uniformisation of higher-dimensional minimal varieties
Creators: name: Greb, Daniel
name: Kebekus, Stefan
name: Taji, Behrouz
Publisher: name: arXiv
Year: 2016
Subjects: subject: Algebraic Geometry (math.AG)
subject: Complex Variables (math.CV)
subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: Primary: 32Q30, Secondary: 14E30, 53C07

description: After a historical discussion of classical uniformisation results for Riemann surfaces, of problems appearing in higher dimensions, and of uniformisation results for projective manifolds with trivial or ample canonical bundle, we introduce the basic technical concepts and sketch the ideas of the proofs for recent uniformisation theorems for singular varieties obtained by the authors in collaboration with Thomas Peternell.
description: 29 pages, accepted for publication in the proceedings of the 2015 AMS Summer Institute in Algebraic Geometry, Salt Lake City
Penolakan Aplikasi DOAJ
Creators: name: Yusro, Andista Candra
Publisher: name: Zenodo
Year: 2020
Subjects: DOAJ
Penolakan DOAJ

description: Materi ini disampaikan pada kegiatan Kampung Jurnal Ilmiah 2020 yang diselengarakan oleh Universitas Muhamadiyah Ponorogo yang berlangsung secara daring melalui Google Meet.

description: KJI 2020
Inelastic cyclic response of reinforced concrete
Creators: name: Lim, Kok Kim.
Publisher: name: Monash University
Year: 2022

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.
Sunlight effects on the 3D polar current system determined from low Earth orbit measurements
Creators: name: Laundal, Karl M.
name: Finlay, Christopher C.
name: Olsen, Nils
Publisher: name: arXiv
Year: 2016
Subjects: subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: Interaction between the solar wind and the Earth's magnetosphere is associated with large-scale currents in the ionosphere at polar latitudes that flow along magnetic field lines (Birkeland currents) and horizontally. These current systems are tightly linked, but their global behaviors are rarely analyzed together. In this paper, we present estimates of the average global Birkeland currents and horizontal ionospheric currents from the same set of magnetic field measurements. The magnetic field measurements, from the low Earth orbiting $\textit{Swarm}$ and CHAMP satellites, are used to co-estimate poloidal and toroidal parts of the magnetic disturbance field, represented in magnetic apex coordinates. The use of apex coordinates reduces effects of longitudinal and hemispheric variations in the Earth's main field. We present global currents from both hemispheres during different sunlight conditions. The results show that the Birkeland currents vary with the conductivity, which depends most strongly on solar EUV emissions on the dayside and on particle precipitation at pre-midnight magnetic local times. In sunlight, the horizontal equivalent current flows in two cells, resembling an opposite ionospheric convection pattern, which implies that it is dominated by Hall currents. By combining the Birkeland current maps and the equivalent current, we are able to calculate the total horizontal current, without any assumptions about the conductivity. We show that the total horizontal current is close to zero in the polar cap when it is dark. That implies that the equivalent current, which is sensed by ground magnetometers, is largely canceled by the horizontal closure of the Birkeland currents.
Akreditasi dan Indeksasi Jurnal Nasional
Creators: name: Yusro, Andista Candra
Publisher: name: Zenodo
Year: 2020
Subjects: ARJUNA
Akreditasi Jurnal Nasional
Jurnal Ilmiah
Indeksasi

description: Materi ini disampaikan dalam rangka webinar pendampingan jurnal ilmiah di Fakultas Ilmu Olahraga UNNESA.
 Kegiatan ini terselenggara berkat kerjasama antara Fakultas Ilmu Olahraga UNNESA dengan Relawan Jurnal Indonesia Pengurus Daerah Jawa Timur.
 Kegiatan ini diselenggarakan pada 2 Juni 2020 secara daring dengan memanfaatkan aplikasi Zoom meeting.
Human Brain Organoids and Consciousness: Moral Claims and Epistemic Uncertainty
Creators: name: Goddard, Eliza
name: Tomaskovic-Crook, Eva
name: Crook, Jeremy Micah
name: Dodds, Susan
Publisher: name: La Trobe
Year: 2023
Subjects: classificationCode: 320606
subject: Regenerative medicine (incl. stem cells)
classificationCode: 500101
subject: Bioethics
classificationCode: 520401
subject: Cognition

description: Human brain organoids provide a remarkable opportunity to model prenatal human brain biology in vitro by recapitulating features of in utero molecular, cellular and systems biology. An ethical concern peculiar to human brain organoids is whether they are or could become capable of supporting sentience through the experience of pain or pleasure and/or consciousness, including higher cognitive abilities such as self-awareness. Identifying the presence of these traits is complicated by several factors, beginning with consciousness—which is a highly contested concept among neuroscientists, cognitive scientists, and philosophers and so there is no agreed definition. Secondly, given human brain organoids are disembodied, there is no practical way to identify evidence of consciousness as we might in humans or animals. What would count as evidence of organoid consciousness is an emerging area of research. To address concerns about consciousness and human brain organoids, in this paper we clarify the morally relevant aspects of human consciousness, phenomenal experience and embodied development and explore the empirical basis of consciousness to develop a defensible framework for informed decision-making on the moral significance and utility of brain organoids, which can also guide regulation and future research of these novel biological systems.
Riemann-Lagrange geometry for starfish-coral dynamical system
Creators: name: Neagu, Mircea
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Mathematics (math.GM)
subject: FOS: Mathematics
subject: 53C43, 53C07, 83C50

description: In this paper we develop the Riemann-Lagrange geometry, in the sense of nonlinear connection, d-torsions, d-curvatures and jet Yang-Mills entity, associated with the dynamical system concerning social interaction in colonial organisms.
description: 6 pages
title: Evaluation künstlicher neuronaler Netze für eine Out-of-Stock-Erkennung
Creators: name: Willers, Dennis
Publisher: name: Hochschulbibliothek der Technischen Hochschule Köln
Year: 2023
Subjects: subject: 000 Allgemeines, Informatik, Informationswissenschaft

description: As a customer, it can be frustrating to face an empty shelf in a store. The market does not always realize that a product has been out of stock for a while, as the item is still listed as in stock in the inventory management system. To address this issue, a camera should be used to check for Out-of-Stock (OOS) situations. This master thesis evaluates diﬀerent model conﬁgurations of Artiﬁcial Neural Networks (ANNs) to determine which one best detects OOS situations in the market using images. To create a dataset, 2,712 photos were taken in six stores. The photos clearly show whether there is a gap on the shelf or if the product is in stock. Based on the pre-trained VGG16 model from Keras, two fully connected layers were implemented, with 36 diﬀerent ANNs diﬀering in the optimization method and activation function pairings. In total, 216 models were generated in this thesis to investigate the eﬀects of three diﬀerent optimization methods combined with twelve diﬀerent activation function pairings. An almost balanced ratio of OOS and in-stock data was used to generate these models. The evaluation of the generated OOS models shows that the FTRL optimization method achieved the least favorable results and is therefore not suitable for this application. Model conﬁgurations using the Adam or SGD optimization methods achieve much better results. Of the top six model conﬁgurations, ﬁve use the Adam optimization method and one uses SGD. They all achieved an accuracy of at least 93% and were able to predict the Recall for the OOS class with at least 91%. As the data ratio between OOS and in-stock data did not correspond to reality in the previously generated models, the in-stock images were augmented. Including the augmented images, new OOS models were generated for the top six model conﬁgurations. The results of these OOS models show no convergences. This suggests that more epochs in the training phase lead to better results. However, the results of the OOS model using the Adam optimization method and the Sigmoid and ReLU activation functions stand out positively. It achieved the best result with an accuracy of 97.91% and a Recall of the OOS class of 87.82%. Overall, several OOS models have the potential to increase both market sales and customer satisfaction. In a future study, the OOS models should be installed in the market to evaluate their performance under real conditions. The resulting insights can be used for continuous optimization of the model.
Optimisation and Validation of a Swarm Intelligence based Segmentation Algorithm for low Contrast Positron Emission Tomography
Creators: name: Haase, Robert
Publisher: name: Zenodo
Year: 2014
Subjects: Swarm Intelligence, Ant-colony-optimization, Positron-Emission-Tomography, Hypoxia

description: In the field of radiooncological research, individualised therapy is one of the hot topics at the moment. As a key aspect biologically-adapted therapy is discussed. Therapy adaption based on biological parameters may include tomographic imaging to determine biological properties of the tumour. One often invoked imaging modality is positron emission tomography (PET) using the tracer [18F]-fluoromisonidazole (FMISO) for hypoxia imaging. Hypoxia imaging is of interest, because hypoxic tumours are known to be radiorestistant. Even further, patients with hypoxic tumours have worse prognosis compared to patients with normoxic tumours. Thus, hypoxia imaging appears promising for radiotherapy treatment adaption. For example, volumetric analysis of FMISO PET could deliver additional hypoxia target volumes, which may be irradiated with higher radiation doses to improve the therapeutic effect. However, limited contrast between target volume and background in FMISO PET images interferes image analysis.Established methods for target volume delineation in PET do not allow determination of reliable contours in FMISO PET. To tackle this aspect, this thesis focusses on an earlier developed swarm intelligence based segmentation algorithm for FMISO PET and rather, its optimisation and validation in a clinically relevant setting. In this setting, clinical FMISO PET images were used which were acquired as part of a clinical trial performed at the Clinic and Policlinic for Radiation Therapy and Radiooncology of the University Hospital Carl Gustav Carus Dresden. The segmentation algorithm was applied to these imaging data sets and optimised using a cross-validation approach incorporating reference contours from experienced observers who outlined FMISO PET positive volumes manually. Afterwards, the performance of the algorithm and the properties of the resulting contours were studied in more detail. The algorithm was shown to deliver contours which were similar to manually-created contours to a degree like manually-created contours were similar to each other. Thus, the application of the algorithm in clinical research is recommended to eliminate inter-observer-variabilities. Finally, it was shown that repeated FMISO PET imaging before and shortly after the beginning of combined radiochemotherapy lead to manually-created contours with significantly higher variations than the variations of automatically-created contours using the proposed algorithm. Increased contour similarity in subsequently acquired imaging data highlights the observer-independence of the algorithm. While several observers outline different volumes, in identical data sets as well as in subsequent imaging data sets, the algorithm outlines more stable volumes in both cases. Thus, increased contour reproducibility is reached by automation of the delineation process by the proposed algorithm.
$\mathbb{Z}_2$ invariance of Germanene on MoS$_2$ from first principles
Creators: name: Amlaki, Taher
name: Bokdam, Menno
name: Kelly, Paul J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present a low energy Hamiltonian generalized to describe how the energy bands of germanene ($\rm \overline{Ge}$) are modified by interaction with a substrate or a capping layer. The parameters that enter the Hamiltonian are determined from first-principles relativistic calculations for $\rm \overline{Ge}|$MoS$_2$ bilayers and MoS$_2|\rm \overline{Ge} |$MoS$_2$ trilayers and are used to determine the topological nature of the system. For the lowest energy, buckled germanene structure, the gap depends strongly on how germanene is oriented with respect to the MoS$_2$ layer(s). Topologically non-trivial gaps for bilayers and trilayers can be almost as large as for a free-standing germanene layer.
Theoretical and experimental considerations of acoustic intensity close to a vibrating surface
Creators: name: Phelan, Ian Douglas.
Publisher: name: Monash University
Year: 2022

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.
FemtoDAQ: A Low-Cost Digitizer for SiPM-Based Detector Studies and its Application to the HAWC Detector Upgrade
Creators: name: Skulski, Wojtek
name: Ruben, Andreas
name: BenZvi, Segev
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: High Energy Physics - Experiment (hep-ex)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The FemtoDAQ is a low-cost two channel data acquisition system which we have used to investigate the signal characteristics of silicon photomultipliers (SiPMs) coupled to fast scintillators. The FemtoDAQ system can also be used to instrument low cost moderate performance passive detectors, and is suitable for use in harsh environments (e.g., high altitude). The FemtoDAQ is being used as a SiPM test bench for the High Altitude Water Cherenkov (HAWC) Observatory, a TeV gamma ray detector located 4100 m above sea level. Planned upgrades to the HAWC array can benefit greatly from SiPMs, a robust, low-voltage, low-cost alternative to traditional vacuum photomultipliers. The FemtoDAQ is used to power the SiPM detector front end, bias the SiPM, and digitize the photosensor output in a single compact unit.
description: Submitted to Proceedings of SORMA West 2016
Ultrafast, polarized, single-photon emission from m-plane InGaN Quantum Dots on GaN nanowires
Creators: name: Puchtler, Tim J.
name: Wang, Tong
name: Ren, Christopher X.
name: Tang, Fengzai
name: Oliver, Rachel A.
name: Taylor, Robert A.
name: Zhu, Tongtong
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We demonstrate single photon emission from self-assembled m-plane InGaN quantum dots (QDs) embedded on the side-walls of GaN nanowires. A combination of electron microscopy, cathodoluminescence, time-resolved micro-PL and photon autocorrelation experiments give a thorough evaluation of the QDs structural and optical properties. The QD exhibits anti-bunched emission up to 100 K, with a measured autocorrelation function of g^2(0) = 0.28 (0.03) at 5 K. Studies on a statistically significant number of QDs show that these m-plane QDs exhibit very fast radiative lifetimes (260 +/- 55 ps) suggesting smaller internal fields than any of the previously reported c-plane and a-plane QDs. Moreover, the observed single photons are almost completely linearly polarized aligned perpendicular to the crystallographic c-axis with a degree of linear polarization of 0.84 +/- 0.12. Such InGaN QDs incorporated in a nanowire system meet many of the requirements for implementation into quantum information systems and could potentially open the door to wholly new device concepts.
Subcycle Quantum Electrodynamics
Creators: name: Riek, Claudius
name: Sulzer, Philipp
name: Seeger, Maximilian
name: Moskalenko, Andrey S.
name: Burkard, Guido
name: Seletskiy, Denis V.
name: Leitenstorfer, Alfred
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Besides their stunning physical properties which are unmatched in a classical world, squeezed states of electromagnetic radiation bear advanced application potentials in quantum information systems and precision metrology, including gravitational wave detectors with unprecedented sensitivity. Since the first experiments on such nonclassical light, quantum analysis has been based on homodyning techniques and photon correlation measurements. These methods require a well-defined carrier frequency and photons contained in a quantum state need to be absorbed or amplified. They currently function in the visible to near-infrared and microwave spectral ranges. Quantum nondemolition experiments may be performed at the expense of excess fluctuations in another quadrature. Here we generate mid-infrared time-locked patterns of squeezed vacuum noise. After propagation through free space, the quantum fluctuations of the electric field are studied in the time domain by electro-optic sampling with few-femtosecond laser pulses. We directly compare the local noise amplitude to the level of bare vacuum fluctuations. This nonlinear approach operates off resonance without absorption or amplification of the field that is investigated. Subcycle intervals with noise level significantly below the pure quantum vacuum are found. Enhanced fluctuations in adjacent time segments manifest generation of highly correlated quantum radiation as a consequence of the uncertainty principle. Together with efforts in the far infrared, this work opens a window to the elementary quantum dynamics of light and matter in an energy range at the boundary between vacuum and thermal background conditions.
description: 19 pages, 4 figures
Dislocation Mobility and Anomalous Shear Modulus Effect in $^4$He Crystals
Creators: name: Malmi-Kakkada, Abdul N.
name: Valls, Oriol T.
name: Dasgupta, Chandan
Publisher: name: arXiv
Year: 2016
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We calculate the dislocation glide mobility in solid $^4$He within a model that assumes the existence of a superfluid field associated with dislocation lines. Prompted by the results of this mobility calculation, we study within this model the role that such a superfluid field may play in the motion of the dislocation line when a stress is applied to the crystal. To do this, we relate the damping of dislocation motion, calculated in the presence of the assumed superfluid field, to the shear modulus of the crystal. As the temperature increases, we find that a sharp drop in the shear modulus will occur at the temperature where the superfluid field disappears. We compare the drop in shear modulus of the crystal arising from the temperature dependence of the damping contribution due to the superfluid field, to the experimental observation of the same phenomena in solid $^4$He and find quantitative agreement. Our results indicate that such a superfluid field plays an important role in dislocation pinning in a clean solid $^4$He at low temperatures and in this regime may provide an alternative source for the unusual elastic phenomena observed in solid $^4$He.
description: 17 pages, 2 figures. To appear in JLTP
Matched filter detection with dynamic threshold for cognitive radio networks
Creators: name: Salahdine, Fatima
name: Kaabouch, Naima
name: Ghazi, Hassan El
Publisher: name: arXiv
Year: 2016
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: -In cognitive radio networks, spectrum sensing aims to detect the unused spectrum channels in order to use the radio spectrum more efficiently. Various methods have been proposed in the past, such as energy, feature detection, and matched filter. These methods are characterized by a sensing threshold, which plays an important role in the sensing performance. Most of the existing techniques used a static threshold. However, the noise is random, and, thus the threshold should be dynamic. In this paper, we suggest an approach with an estimated and dynamic sensing threshold to increase the efficiency of the sensing detection. The matched filter method with dynamic threshold is simulated and its results are compared to those of other existing techniques. Keywords-cognitive radio networks; spectrum sensing; energy detection; matched filter detection; autocorrelation based sensing; estimated dynamic threshold
On-line testing of hydraulic control systems
Creators: name: Tjong, K. F.
Publisher: name: Monash University
Year: 2022

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.
Hypersurface-deformation algebroids and effective space-time models
Creators: name: Bojowald, Martin
name: Brahma, Suddhasattwa
name: Buyukcam, Umut
name: D'Ambrosio, Fabio
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: In canonical gravity, covariance is implemented by brackets of hypersurface-deformation generators forming a Lie algebroid. Lie algebroid morphisms therefore allow one to relate different versions of the brackets that correspond to the same space-time structure. An application to examples of modified brackets found mainly in models of loop quantum gravity can in some cases map the space-time structure back to the classical Riemannian form after a field redefinition. For one type of quantum corrections (holonomies), signature change appears to be a generic feature of effective space-time, and is shown here to be a new quantum space-time phenomenon which cannot be mapped to an equivalent classical structure. In low-curvature regimes, our constructions prove the existence of classical space-time structures assumed elsewhere in models of loop quantum cosmology, but also shows the existence of additional quantum corrections that have not always been included.
description: 30 pages
A Luminous Gamma-ray Binary in the Large Magellanic Cloud
Creators: name: Corbet, R. H. D.
name: Chomiuk, L.
name: Coe, M. J.
name: Coley, J. B.
name: Dubus, G.
name: Edwards, P. G.
name: Martin, P.
name: McBride, V. A.
name: Stevens, J.
name: Strader, J.
name: Townsend, L. J.
name: Udalski, A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Gamma-ray binaries consist of a neutron star or a black hole interacting with a normal star to produce gamma-ray emission that dominates the radiative output of the system. Only a handful of such systems have been previously discovered, all within our Galaxy. Here we report the discovery with the Fermi Large Area Telescope (LAT) of a luminous gamma-ray binary in the Large Magellanic Cloud from a search for periodic modulation in all sources in the third Fermi LAT catalog. This is the first such system to be found outside the Milky Way. The system has an orbital period of 10.3 days and is associated with a massive O5III star located in the supernova remnant DEM L241, previously identified as the candidate high-mass X-ray binary (HMXB) CXOU J053600.0-673507. X-ray and radio emission are also modulated on the 10.3 day period, but are in anti-phase with the gamma-ray modulation. Optical radial velocity measurements suggest that the system contains a neutron star. The source is significantly more luminous than similar sources in the Milky Way at radio, optical, X-ray and gamma-ray wavelengths. The detection of this extra-galactic system, but no new Galactic systems raises the possibility that the predicted number of gamma-ray binaries in our Galaxy has been overestimated, and that HMXBs may be born containing relatively slowly rotating neutron stars.
description: 11 pages, 6 figures. Accepted for publication in The Astrophysical Journal
"Oh, when the fans go marching in..." Football fan communities, empowerment and citizenship: a comparative case study between Newcastle United and Borussia Mönchengladbach
Creators: name: Pekie, Anni
Publisher: name: Loughborough University
Year: 2020
Subjects: subject: 119999 Medical and Health Sciences not elsewhere classified
subject: FOS: Other medical sciences

description: This study investigates the ways in which football supporters engage in their fan communities. It further establishes the links between these activities, the development of feelings of community and performances of empowerment and citizenship. These links are explored with reference to football fans’ support activities, protest mobilisations and modes of communication. The comparative case study between Newcastle United in England and Borussia Mönchengladbach in Germany gives this research an international perspective. Data were collected in two stages. The first stage used fan-authored online blog posts collected from six blogs. The second stage was conducted via 29 semi-structured interviews with fans of both football clubs. This research found that football fan communities are extremely heterogeneous. This diversity can be challenging as supporters disagree over how to engage in various fan activities. However, these challenges are by no means unique to football fans as they mirror existing issues in society. Furthermore, football fan engagement can indeed be conceptualised as a form of civic participation. Despite their divergent opinions, football fans often engage in meaningful activity with other fans, which can contribute to feelings of community, empowerment and citizenship. With this focus this research develops existing work on football supporters because it looks at patterns of experiences rather than just patterns of consumption among football fans. It further provides an empirical contribution to citizenship research.
Data for: Predicting m7G sites used by autoBioSeqpy
Creators: name: Zhang, Yonglin
name: Yu, Lezheng
name: Jing, Runyu
name: Han, Bin
name: Luo, Jiesi
Publisher: name: Zenodo
Year: 2022
Subjects: N7-methylguanosine

description: As a vital post-transcriptional RNA modification, N7-methylguanosine plays a key role in the regulation of gene expression. Precise identification of the m7G sites is a crucial first step toward understanding its biological function and regulatory mechanisms. Although whole-genome sequencing is the gold standard for RNA modification site detection, it is time-consuming, expensive, and relatively complex. In recent years, computational approaches have become increasingly popular in achieving this goal, especially with the rise of deep learning techniques. Some deep learning algorithms, such as convolutional neural networks (CNNs) and recurrent neural networks (RNNs), have emerged as versatile approaches for modeling biological sequence data. However, designing a successful network architecture with excellent performance remains a challenge because it requires substantial professional knowledge and commitment of time and effort. We previously developed a tool called autoBioSeqpy to efficiently design and apply deep learning networks for the classification of biological sequences. autoBioSeqpy has many unique features that make it a practical tool for a broad range of biological questions. In this work, we used autoBioSeqpy to develop, train, evaluate and analyze sequence-level deep learning models for predicting the m7G sites. We here provided a detailed description of the various models it implements, as well as a step-by-step guide on how to execute them. The same strategy can also be applied in other systems to address similar biological questions.
description: Funding provided by: National Natural Science Foundation of China
Crossref Funder Registry ID: http://dx.doi.org/10.13039/501100001809
Award Number: 21803045Funding provided by: National Natural Science Foundation of China
Crossref Funder Registry ID: http://dx.doi.org/10.13039/501100001809
Award Number: 81903660Funding provided by: Fund of Science and Technology Department of Guizhou Province*
Crossref Funder Registry ID:
Award Number: [2017]5790-07Funding provided by: Natural Science Foundation of Department of Education of Guizhou*
Crossref Funder Registry ID:
Award Number: [2021]021Funding provided by: Luzhou Municipal People's Government*
Crossref Funder Registry ID:
Award Number: 2020LZXNYDJ39Funding provided by: Southwest Medical University
Crossref Funder Registry ID: http://dx.doi.org/10.13039/501100014895
Award Number: 2020LZXNYDJ39
Simulating the environment around planet-hosting stars - II. Stellar winds and inner astrospheres
Creators: name: Alvarado-Gómez, J. D.
name: Hussain, G. A. J.
name: Cohen, O.
name: Drake, J. J.
name: Garraffo, C.
name: Grunhut, J.
name: Gombosi, T. I.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present the results of a comprehensive numerical simulation of the environment around three exoplanet-host stars (HD 1237, HD 22049, and HD 147513). Our simulations consider one of the latest models currently used for space weather studies in the Heliosphere. Large-scale magnetic field maps, recovered with two implementations of the tomographic technique of Zeeman-Doppler imaging, serve to drive steady-state solutions in each system. This paper contains the description of the stellar wind and inner astrosphere, while the coronal structure was previously discussed in Alvarado-Gómez et al. (2016). The analysis includes the magneto-hydrodynamical properties of the stellar wind, the associated mass and angular momentum loss rates, as well as the topology of the astrospheric current sheet in each system. A systematic comparison among the considered cases is performed, including two reference solar simulations covering activity minimum and maximum. For HD 1237, we investigate the interactions between the structure of the developed stellar wind, and a possible magnetosphere around the Jupiter-mass planet in this system. We find that the process of particle injection into the planetary atmosphere is dominated by the density distribution rather than velocity profile of the stellar wind. In this context, we predict a maximum exoplanetary radio emission of 12 mJy at 40 MHz in this system, assuming the crossing of a high-density streamer during periastron passage. Furthermore, in combination with the analysis performed in Alvarado-Gómez et al. (2016), we obtain for the first time a fully simulated mass loss-activity relation, which is compared and discussed in the context of the relation based on astrospheric detections proposed by Wood et al. (2005a). Finally, we provide a characterisation of the 3D properties of the stellar wind of these systems, at the inner edges of their habitable zones.
description: 19 pages, 12 Figures. Accepted for publication in Astronomy & Astrophysics
A study of the effect of routine lane closures on the West Gate Freeway
Creators: name: Chambers, Greg.
Publisher: name: Monash University
Year: 2022

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.
Stabilization and frequency control of a DFB laser with a tunable optical reflector integrated in a Silicon Photonics PIC
Creators: name: Hauck, Johannes
name: Schrammen, Matthias
name: Romero-García, Sebastían
name: Müller, Juliana
name: Shen, Bin
name: Richter, Jens
name: Merget, Florian
name: Witzens, Jeremy
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We investigate the effect of tunable optical feedback on a commercial DFB laser edge coupled to a Silicon Photonics planar integrated circuit in which a tunable reflector has been implemented by means of a ring resonator based add-drop multiplexer. Controlled optical feedback allows for fine-tuning of the laser oscillation frequency. Under certain conditions it also allows suppression of bifurcation modes triggered by reflections occurring elsewhere on the chip. A semi-analytical model describing laser dynamics under combined optical feedback from the input facet of the edge coupler and from the tunable on-chip reflector fits the measurements. Compensation of detrimental effects from reflections induced elsewhere on a transceiver chip may allow moving isolators downstream in future communications systems, facilitating direct hybrid laser integration in Silicon Photonics chips, provided a suitable feedback signal for a control system can be identified. Moreover, the optical frequency tuning at lower feedback levels can be used to form a rapidly tunable optical oscillator as part of an optical phase locked loop, circumventing the problem of the thermal to free carrier effect crossover in the FM response of injection current controlled semiconductor laser diodes.
Short-range Photoassociation of LiRb
Creators: name: Blasing, David B.
name: Stevenson, Ian C.
name: Pérez-Ríos, Jesús
name: Elliott, Daniel S.
name: Chen, Yong P.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We have observed short-range photoassociation of LiRb to the two lowest vibrational states of the $d\,^3Π$ potential. These $d\,^3Π$ molecules then spontaneously decay to vibrational levels of the $a^3\,Σ^+$ state with generation rates of $\sim10^3$ molecules per second. This is the first observation of many of these $a\,^3Σ^+$ levels. We observe an alternation of the peak heights in the rotational photoassociation spectrum that suggests a $p$-wave shape resonance in the scattering state. Franck-Condon overlap calculations predict that photoassociation to higher vibrational levels of the $d\,^3Π$, in particular the sixth vibrational level, should populate the lowest vibrational level of the $a\,^3Σ^+$ state with a rate as high as $10^4$ molecules per second. These results encourage further work to explain our observed LiRb collisional physics using PECs. This work also motivates an experimental search for short-range photoassociation to other bound molecules, such as the $c\,^3Σ^+$ or $b\,^3Π$, as prospects for preparing ground-state molecules.
description: 6 pages, 5 figures, 2 tables
Constraints on rainbow gravity functions from black hole thermodynamics
Creators: name: Gangopadhyay, Sunandan
name: Dutta, Abhijit
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper, we investigate the thermodynamic properties of black holes in the framework of rainbow gravity. By considering rainbow functions in the metric of Schwarzschild and Reissner-Nordström black holes, remnant and critical masses are found to exist. Demanding the universality of logarithmic corrections to the semi-classical area law for the entropy leads to constraining the form of the rainbow functions. The mass output and the radiation rate for these constrained form of rainbow functions have been computed for different values of the rainbow parameter $η$ and have striking similarity to those derived from the generalized uncertainty principle.
description: 11 pages Latex, comments are welcome
Potentiodynamic studies on crevice corrosion of the type 304 steel
Creators: name: Lim, Ah-Shi.
Publisher: name: Monash University
Year: 2022

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.