cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The evolution of the star formation rate function and cosmic star formation rate density of galaxies at $z \sim 1-4$
Creators: name: Katsianis, Antonios
name: Tescari, Edoardo
name: Blanc, Guillermo
name: Sargent, Mark
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We investigate the evolution of the galaxy Star Formation Rate Function (SFRF) and Cosmic Star Formation Rate Density (CSFRD) of $z\sim 1-4 $ galaxies, using cosmological Smoothed Particle Hydrodynamic (SPH) simulations and a compilation of UV, IR and H$α$ observations. These tracers represent different populations of galaxies with the IR light being a probe of objects with high star formation rates and dust contents, while UV and H$α$ observations provide a census of low star formation galaxies where mild obscuration occurs. We compare the above SFRFs with the results of SPH simulations run with the code {\small{P-GADGET3(XXL)}}. We focus on the role of feedback from Active Galactic Nuclei (AGN) and supernovae in form of galactic winds. The AGN feedback prescription that we use decreases the simulated CSFRD at $z < 3$ but is not sufficient to reproduce the observed evolution at higher redshifts. We explore different wind models and find that the key factor for reproducing the evolution of the observed SFRF and CSFRD at $z \sim1-4$ is the presence of a feedback prescription that is prominent at high redshifts ($z \ge 4$) and becomes less efficient with time. We show that variable galactic winds which are efficient at decreasing the SFRs of low mass objects are quite successful in reproducing the observables.
description: 20 pages, 7 figures, 10 tables, accepted for publication in MNRAS
ความคิดเห็นของผู้ต้องขังในเรือนจำจังหวัดนนทบุรีต่อสิ่งจำเป็นขั้นพื้นฐาน 5 ด้าน
Creators: name: เพลินพิศ อ้นแก้ว
Publisher: name: คณะนิเทศศาสตร์ มหาวิทยาลัยราชภัฏรำไพพรรณี
Year: 2566
Subjects: ความคิดเห็น
ผู้ต้องขัง
สิ่งจำเป็นขั้นพื้นฐาน
เรือนจำจังหวัดนนทบุรี

description: วารสารนวัตกรรมสังคมและเทคโนโลยีสื่อสารมวลชน, 6, 1, 44-53
Universal diamond edge Raman scale to 0.5 terapascal: The implication to metallization of hydrogen
Creators: name: Eremets, M. I.
name: Minkov, V. S.
name: Kong, P. P.
name: Drozdov, A. P.
name: Chariton, S.
name: Prakapenka, V. B.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The recent progress in generating static pressures up to terapascal values opens opportunities for studying novel materials with unusual properties, such as metallization of hydrogen and high-temperature superconductivity. However, an evaluation of pressure above ~0.3 terapascal is a challenge. We report a universal high-pressure scale up to ~0.5 terapascal, based on the shift of the Raman edge of stressed diamond anvils correlated with the equation of state of Au and does not require an additional pressure sensor. According to the new scale, the pressure values are substantially lower by 20% at ~0.5 terapascal compared to the extrapolation of the existing scales. We compared the available data of H2 at the highest static pressures. We showed that the onset of the proposed metallization of molecular hydrogen reported by different groups is consistent when corrected with the new scale and can be compared with various theoretical predictions.
ความรับผิดทางอาญาของนิติบุคคลในความผิดเกี่ยวกับการฟอกเงิน : ศึกษากรณี มาตรา 61 แห่งพระราชบัญญัติป้องกันและปราบปรามการฟอกเงิน พ.ศ.2542
Creators: name: วชิรากรณ์ ขาวคม
Publisher: name: คณะนิเทศศาสตร์ มหาวิทยาลัยราชภัฏรำไพพรรณี
Year: 2566
Subjects: ความรับผิดทางอาญา
นิติบุคคล
ความผิดเกี่ยวกับการฟอกเงิน
พระราชบัญญัติป้องกันและปราบปรามการฟอกเงินพ.ศ.2542

description: วารสารนวัตกรรมสังคมและเทคโนโลยีสื่อสารมวลชน, 6, 1, 54-61
Witnessing quantum capacities of correlated channels
Creators: name: Macchiavello, Chiara
name: Sacchi, Massimiliano F.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We test a general method to detect lower bounds of the quantum channel capacity for two-qubit correlated channels. We consider in particular correlated dephasing, depolarising and amplitude damping channels. We show that the method is easily implementable, it does not require a priori knowledge about the channels, and it is very efficient, since it does not rely on full quantum process tomography.
description: 9 pages, 3 figures
Efficient separation of quantum from classical correlations for mixed states with a fixed charge
Creators: name: Carisch, Christian
name: Zilberberg, Oded
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Entanglement is the key resource for quantum technologies and is at the root of exciting many-body phenomena. However, quantifying the entanglement between two parts of a real-world quantum system is challenging when it interacts with its environment, as the latter mixes cross-boundary classical with quantum correlations. Here, we efficiently quantify quantum correlations in such realistic open systems using the operator space entanglement spectrum of a mixed state. If the system possesses a fixed charge, we show that a subset of the spectral values encode coherence between different cross-boundary charge configurations. The sum over these values, which we call "configuration coherence", can be used as a quantifier for cross-boundary coherence. Crucially, we prove that for purity non-increasing maps, e.g., Lindblad-type evolutions with Hermitian jump operators, the configuration coherence is an entanglement measure. Moreover, it can be efficiently computed using a tensor network representation of the state's density matrix. We showcase the configuration coherence for spinless particles moving on a chain in presence of dephasing. Our approach can quantify coherence and entanglement in a broad range of systems and motivates efficient entanglement detection.
description: 7 pages, 3 figures
An assessment of the impact of investment in open-ended rotor spinning on the demand for raw wool
Creators: name: Angel, Clair S.
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.
การพัฒนาชุดการสอน เรื่อง โครงสร้างภายในเซลล์สิ่งมีชีวิต ด้วยกระบวนการสืบเสาะหาความรู้ (5E) ร่วมกับแบบจำลอง สำหรับนักเรียนชั้นมัธยมศึกษาปีที่ 1
Creators: name: จุไรรัตน์ อินต๊ะนนท์
Publisher: name: คณะนิเทศศาสตร์ มหาวิทยาลัยราชภัฏรำไพพรรณี
Year: 2566
Subjects: ชุดการสอน
กระบวนการสืบเสาะหาความรู้
แบบจำลอง

description: วารสารนวัตกรรมสังคมและเทคโนโลยีสื่อสารมวลชน, 6, 1, 62-71
วิทยาการคำนวณกับการจัดประสบการณ์การเรียนรู้สำหรับเด็กปฐมวัย
Creators: name: เกศิณี ศิริสุนทรไพบูลย์
Publisher: name: คณะนิเทศศาสตร์ มหาวิทยาลัยราชภัฏรำไพพรรณี
Year: 2566
Subjects: วิทยาการคำนวณ
การคิดเชิงคำนวณ
การเขียนโค้ด
การจัดประสบการณ์การเรียนรู้
เด็กปฐมวัย

description: วารสารนวัตกรรมสังคมและเทคโนโลยีสื่อสารมวลชน, 6, 1, 72-80
Multi-class Skin Cancer Classification Architecture Based on Deep Convolutional Neural Network
Creators: name: Akter, Mst Shapna
name: Shahriar, Hossain
name: Sneha, Sweta
name: Cuzzocrea, Alfredo
Publisher: name: arXiv
Year: 2023
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Skin cancer detection is challenging since different types of skin lesions share high similarities. This paper proposes a computer-based deep learning approach that will accurately identify different kinds of skin lesions. Deep learning approaches can detect skin cancer very accurately since the models learn each pixel of an image. Sometimes humans can get confused by the similarities of the skin lesions, which we can minimize by involving the machine. However, not all deep learning approaches can give better predictions. Some deep learning models have limitations, leading the model to a false-positive result. We have introduced several deep learning models to classify skin lesions to distinguish skin cancer from different types of skin lesions. Before classifying the skin lesions, data preprocessing and data augmentation methods are used. Finally, a Convolutional Neural Network (CNN) model and six transfer learning models such as Resnet-50, VGG-16, Densenet, Mobilenet, Inceptionv3, and Xception are applied to the publically available benchmark HAM10000 dataset to classify seven classes of skin lesions and to conduct a comparative analysis. The models will detect skin cancer by differentiating the cancerous cell from the non-cancerous ones. The models performance is measured using performance metrics such as precision, recall, f1 score, and accuracy. We receive accuracy of 90, 88, 88, 87, 82, and 77 percent for inceptionv3, Xception, Densenet, Mobilenet, Resnet, CNN, and VGG16, respectively. Furthermore, we develop five different stacking models such as inceptionv3-inceptionv3, Densenet-mobilenet, inceptionv3-Xception, Resnet50-Vgg16, and stack-six for classifying the skin lesions and found that the stacking models perform poorly. We achieve the highest accuracy of 78 percent among all the stacking models.
Estimating spare parts requirements
Creators: name: Yuen, Hon Cheung.
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.
Physical factors governing the shape of the Miram curve knee in thermionic emission
Creators: name: Chen, Dongzheng
name: Jacobs, Ryan
name: Morgan, Dane
name: Booske, John
Publisher: name: arXiv
Year: 2022
Subjects: subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: In a current density versus temperature (J-T) (Miram) curve in thermionic electron emission, experimental measurements demonstrate there is a smooth transition between the exponential region and the saturated emission regions, which is sometimes referred to as the "roll-off" or "Miram curve knee". The shape of the Miram curve knee is an important figure of merit for thermionic vacuum cathodes. Specifically, cathodes with a sharp Miram curve knee at low temperature with a flat saturated emission current are typically preferred. Our previous work on modeling nonuniform thermionic emission revealed that the space charge effect and patch field effect are key pieces of physics which impact the shape of the Miram curve knee. This work provides a more complete understanding of the physical factors connecting these physical effects and their relative impact on the shape of the knee, including the smoothness, the temperature, and the flatness of the saturated emission current density. For our analyses, we use a periodic, equal-width striped ("zebra crossing") work function distribution as a model system and illustrate how the space charge and patch field effects restrict the emission current density near the Miram curve knee. The results indicate there are three main physical parameters which significantly impact the shape of the Miram curve. Such physical knowledge directly connects the patch size, work function values, anode-cathode voltage, and anode-cathode gap distance to the shape of the Miram curve, providing new understanding and a guide to the design of thermionic cathodes used as electron sources in vacuum electronic devices (VEDs).
New constraints on primordial features from the galaxy two-point correlation function
Creators: name: Ballardini, Mario
name: Finelli, Fabio
name: Marulli, Federico
name: Moscardini, Lauro
name: Veropalumbo, Alfonso
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Features in the primordial power spectrum represent the imprinted signal in the density perturbations of the physics and evolution of the early Universe. A measurement of such signals will represents the need to go beyond the minimal assumption made for the initial conditions of the cosmological perturbations. For the first time, we study different templates with undamped oscillations or a bump from the two-point correlation function measured from BOSS DR12 galaxies constraining the amplitude of the features to be at most a few percent. Constraints are competitive to the ones obtained with {\em Planck} DR3.
description: 8 pages, 4 figures, 2 tables
A TMEM16J variant leads to dysregulated cytosolic calcium which may lead to renal disease
Creators: name: Schreiber, Rainer
name: Talbi, Khaoula
name: Ousingsawat, Jiraporn
name: Kunzelmann, Karl
Publisher: name: Universität Regensburg
Year: 2022
Subjects: subject: ANO9, anoctamin 9, Ca2+ signaling, chronic renal failure, renal transplant, TMEM16J
subject: 500 Naturwissenschaften
subject: 570 Biowissenschaften, Biologie

description: SIGIRR (single immunoglobulin IL-1 related receptor), PKP3 (plakophilin 3), and TMEM16J (anoctamin 9), a putative calcium-activated ion channel and phospholipid scramblase, control the immune response and the extent of inflammation. Variants of SIGIRR/PKP3/TMEM16J lead to severe inflammatory diseases such as pneumonia, enterocolitis, and kidney graft rejection. Meta-analysis of genome-wide association studies identified TMEM16J-T604A as a promotor for chronic kidney disease (CKD), but the disease mechanism and function of TMEM16J remain unknown. Here, we demonstrate TMEM16J as a calcium-activated calcium-permeable channel, which is expressed in the endoplasmic reticulum (ER). TMEM16J controls the intracellular distribution of calcium, and inhibits intracellular receptor-mediated Ca2+ signals and Ca2+-dependent activation of ion channels, but augments transcription and release of pro-inflammatory cytokines. Renal epithelial cells expressing the variant TMEM16J-T604A show enhanced calcium signals when compared to cells expressing wt-TMEM16J, and demonstrate spontaneous transcription and release of cytokines. This study identifies TMEM16J as an important regulator of intracellular Ca2+ signals, ion channel activity, and cytokine release. TMEM16J may therefore affect immune response in renal tissue and immune cells.
The search for a consistent and viable economic system in the Soviet Union
Creators: name: Marangos, John.
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.
An innovative silicon photomultiplier digitizing camera for gamma-ray astronomy
Creators: name: Heller, Matthieu
name: Schioppa, Enrico Junior
name: Porcelli, Alessio
name: Pujadas, Isaac Troyano
name: Zietara, Krzysztof
name: Della Volpe, Domenico
name: Montaruli, Teresa
name: Cadoux, Franck
name: Favre, Yannick
name: Sanchez, Juan Antonio Aguilar
name: Christov, Asen
name: Prandini, Elisa
name: Rajda, Pawel
name: Rameez, Mohamed
name: Blinik, Woijciech
name: Blocki, Jacek
name: Bogacz, Leszek
name: Borkowski, Jurek
name: Bulik, Tomasz
name: Frankowski, Adam
name: Grudzinska, Mira
name: Idzkowski, Bartosz
name: Jamrozy, Mateusz
name: Janiak, Mateusz
name: Kasperek, Jerzy
name: Lalik, Krzysztof
name: Lyard, Etienne
name: Mach, Emil
name: Mandat, Dusan
name: Marszalek, Adrian
name: Miranda, Luis David Medina
name: Michalowski, Jerzy
name: Neronov, Andrii
name: Niemiec, Jacek
name: Ostrowski, Michal
name: Pasko, Pawel
name: Pech, Miroslav
name: Schovanek, Petr
name: Seweryn, Karol
name: Sliusar, Vitalii
name: Skowron, Krzysztof
name: Stawarz, Lukasz
name: Stodulska, Magdalena
name: Stodulski, Marek
name: Walter, Roland
name: Wiecek, Marek
name: Zagdanski, Aleksander
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The single-mirror small-size telescope (SST-1M) is one of the three proposed designs for the small-size telescopes (SSTs) of the Cherenkov Telescope Array (CTA) project. The SST-1M will be equipped with a 4 m-diameter segmented mirror dish and an innovative fully digital camera based on silicon photo-multipliers (SiPMs). Since the SST sub-array will consist of up to 70 telescopes, the challenge is not only to build a telescope with excellent performance, but also to design it so that its components can be commissioned, assembled and tested by industry. In this paper we review the basic steps that led to the design concepts for the SST-1M camera and the ongoing realization of the first prototype, with focus on the innovative solutions adopted for the photodetector plane and the readout and trigger parts of the camera. In addition, we report on results of laboratory measurements on real scale elements that validate the camera design and show that it is capable of matching the CTA requirements of operating up to high-moon-light background conditions.
description: 30 pages, 61 figures
Derived right adjoints of parabolic induction: an example
Creators: name: Koziol, Karol
Publisher: name: arXiv
Year: 2022
Subjects: subject: Representation Theory (math.RT)
subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: Suppose $p \geq 5$ is a prime number, and let $G = \textrm{SL}_2(\mathbb{Q}_p)$. We calculate the derived functors $\textrm{R}^n\mathcal{R}_B^G(π)$, where $B$ is a Borel subgroup of $G$, $\mathcal{R}_B^G$ is the right adjoint of smooth parabolic induction constructed by Vignéras, and $π$ is any smooth, absolutely irreducible, mod $p$ representation of $G$.
description: 9 pages. v2: Minor changes. To appear in PJM
Hybrid quantum systems with trapped charged particles
Creators: name: Kotler, Shlomi
name: Simmonds, Raymond W.
name: Leibfried, Dietrich
name: Wineland, David J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We study theoretically the possibilities of coupling the quantum mechanical motion of a trapped charged particle (e.g. ion or electron) to quantum degrees of freedom of superconducting devices, nano-mechanical resonators and quartz bulk acoustic wave resonators. For each case, we estimate the coupling rate between the charged particle and its macroscopic counterpart and compare it to the decoherence rate, i.e. the rate at which quantum superposition decays. A hybrid system can only be considered quantum if the coupling rate significantly exceeds all decoherence rates. Our approach is to examine specific examples, using parameters that are experimentally attainable in the foreseeable future. We conclude that those hybrid quantum system considered involving an atomic ion are unfavorable, compared to using an electron, since the coupling rates between the charged particle and its counterpart are slower than the expected decoherence rates. A system based on trapped electrons, on the other hand, might have coupling rates which significantly exceed decoherence rates. Moreover it might have appealing properties such as fast entangling gates, long coherence and flexible electron interconnectivity topology. Realizing such a system, however, is technologically challenging, since it requires accommodating both trapping technology and superconducting circuitry in a compatible manner. We review some of the challenges involved, such as the required trap parameters, electron sources, electrical circuitry and cooling schemes in order to promote further investigations towards the realization of such a hybrid system.
Museum Horsens research approval letter from Ancient Y. pestis genomes lack the virulence-associated YpfΦ prophage present in modern pandemic strains
Creators: name: Bonczarowska, Joanna H.
name: Susat, Julian
name: Krause-Kyora, Ben
name: Dangvard Pedersen, Dorthe
name: Boldsen, Jesper
name: Agersnap Larsen, Lars
name: Seeberg, Lone
name: Nebel, Almut
name: Unterweger, Daniel
Publisher: name: The Royal Society
Year: 2023
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Health Care
subject: Diseases
classificationCode: 111706
subject: Epidemiology
classificationCode: 60408
subject: Genomics

description: Letter of approval for research on the medieval/early skeletal remains from Horsens, Denmark.
Observation of antiphase coherent phonons in the warped Dirac cone of Bi$_2$Te$_3$
Creators: name: Golias, E.
name: Sánchez-Barriga, J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In this Rapid Communication we investigate the coupling between excited electrons and phonons in the highly anisotropic electronic structure of the prototypical topological insulator Bi$_2$Te$_3$. Using time- and angle-resolved photoemission spectroscopy we are able to identify the emergence and ultrafast temporal evolution of the longitudinal-optical A$_{1g}$ coherent-phonon mode in Bi$_2$Te$_3$. We observe an antiphase behavior in the onset of the coherent-phonon oscillations between the $\overline{ΓK}$ and the $\overline{ΓM}$ high-symmetry directions that is consistent with warping. The qualitative agreement between our density-functional theory calculations and the experimental results reveals the critical role of the anisotropic coupling between Dirac fermions and phonon modes in the topological insulator Bi$_2$Te$_3$.
Broadband Neutron Interferometer
Creators: name: Pushin, Dmitry A.
name: Sarenac, Dusan
name: Hussey, Dan
name: Miao, Houxun
name: Arif, Muhammad
name: Cory, David G.
name: Huber, Michael G.
name: Jacobson, David
name: LaManna, Jacob
name: Parker, Joseph D.
name: Shinohara, Taken
name: Ueno, Wakana
name: Wen, Han
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Nuclear Experiment (nucl-ex)
subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We demonstrate a two phase-grating, multi-beam neutron interferometer by using a modified Ronchi setup in a far-field regime. The functionality of the interferometer is based on the universal \moire effect that was recently implemented for X-ray phase-contrast imaging in the far-field regime. Interference fringes were achieved with monochromatic, bichromatic, and polychromatic neutron beams; for both continuous and pulsed beams. This far-field neutron interferometry allows for the utilization of the full neutron flux for precise measurements of potential gradients, and expands neutron phase-contrast imaging techniques to more intense polycromatic neutron beams.
Effective neutrino number shift from keV-vacuum neutrinophilic 2HDM
Creators: name: Li, Shao-Ping
name: Li, Xin-Qiang
name: Yan, Xin-Shuai
name: Yang, Ya-Dong
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: If the Dirac neutrino masses are generated by a new scalar doublet with a vacuum at keV order, there would be rare hope to probe the framework in low-energy flavor physics, such as the lepton-flavor violating processes. However, the predicted neutrino Yukawa couplings being around the order of electronic Yukawa can realize a purely thermal Dirac leptogenesis, and thus render a more direct link between the high- and the low-energy CP violation. Despite its inert property in the low-energy flavor processes, the keV-vacuum induced Dirac neutrino model can generate a significant shift of the effective neutrino number, which can in turn be probed by the big-bang nucleosynthesis and cosmic microwave background epochs. We show that such a keV-vacuum induced Dirac neutrino model is already constrained by the current observations and will be probed with forecast sensitivity, serving therefore as a complementary avenue to test the Dirac leptogenesis.
description: 8 pages, and 3 figures
General weak segregation theory with an application to monodisperse semi-flexible diblock copolymers
Creators: name: Jager, P. M.
name: Briels, W. J.
name: Slot, J. J. M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: A general theory has been developed for a polydisperse semi-flexible multi-block copolymer melt. Using the Bawendi-Freed approach to model semi-flexible chains an expression for the Landau free energy is derived in the weak segregation regime which includes the density and orientation order-parameters. The orientation order-parameter is described in the smectic phase and in more complicated structures such as the hexagonal phase. The Landau free energy contains contributions of two kinds of interactions. The first kind is the Flory- Huggins interaction which describes the incompatibility of chemically different blocks and may induce microphase separation. The second kind is the Maier- Saupe interaction which may induce nematic ordening. In the framework of the weak segragation limit the Landau theory allows to predict phase structures in the melt as a function of the composition, persistence length and the strength of the Flory-Huggins and Maier-Saupe interaction. The general theory is applied to a simple system of monodisperse semi-flexible diblock copolymers. In several phase diagrams a number of possible phase structures is predicted such as the bcc, hexagonal, smectic-A, smectic-C and nematic phase. The infuence of the Maier-Saupe interaction on the microphase structure is thoroughly discussed.
description: 63 pages, 6 figures, to be published in The Journal of Chemical Physics
Testing for unit roots in time series with drift
Creators: name: Teow, Eng Yeoh.
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 the existence of accretion-driven bursts in massive star formation
Creators: name: Meyer, D. M. -A.
name: Vorobyov, E. I.
name: Kuiper, R.
name: Kley, W.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Accretion-driven luminosity outbursts are a vivid manifestation of variable mass accretion onto protostars. They are known as the so-called FU Orionis phenomenon in the context of low-mass protostars. More recently, this process has been found in models of primordial star formation. Using numerical radiation hydrodynamics simulations, we stress that present-day forming massive stars also experience variable accretion and show that this process is accompanied by luminous outbursts induced by the episodic accretion of gaseous clumps falling from the circumstellar disk onto the protostar. Consequently, the process of accretion-induced luminous flares is also conceivable in the high-mass regime of star formation and we propose to regard this phenomenon as a general mechanism that can affect protostars regardless of their mass and/or the chemical properties of the parent environment in which they form. In addition to the commonness of accretion-driven outbursts in the star formation machinery, we conjecture that luminous flares from regions hosting forming high-mass star may be an observational implication of the fragmentation of their accretion disks.
description: 5 pages, Accepted for MNRAS Letters
Supplementary Figure 1 from Ancient Y. pestis genomes lack the virulence-associated YpfΦ prophage present in modern pandemic strains
Creators: name: Bonczarowska, Joanna H.
name: Susat, Julian
name: Krause-Kyora, Ben
name: Dangvard Pedersen, Dorthe
name: Boldsen, Jesper
name: Agersnap Larsen, Lars
name: Seeberg, Lone
name: Nebel, Almut
name: Unterweger, Daniel
Publisher: name: The Royal Society
Year: 2023
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Health Care
subject: Diseases
classificationCode: 111706
subject: Epidemiology
classificationCode: 60408
subject: Genomics

description: Phylogenetic tree of Yersinia pestis
Inertial focusing of spherical particles in curved microfluidic ducts at moderate Dean numbers
Creators: name: Harding, Brendan
name: Stokes, Yvonne M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We examine the effect of Dean number on the inertial focusing of spherical particles suspended in flow through curved microfluidic ducts. Previous modelling of particle migration in curved ducts assumed the flow rate was small enough that a leading order approximation of the background flow with respect to the Dean number produces a reasonable model. Herein, we extend our model to situations having a moderate Dean number (in the microfluidics context) while the particle Reynolds number remains small. This extension allows us to capture changes in the background flow that occur with increasing flow rate, namely a shift in local extrema towards the outside wall. The change in the axial velocity profile of the background flow has an effect on the inertial lift force, while the change in the cross-sectional components directly affects the secondary flow drag. In keeping the particle Reynolds number small we approximate the inertial lift force in a similar manner to previous studies while capturing subtle effects do to the modified background flow profile. Capturing and understanding these effects is an important step towards accurately modelling inertial migration across a wide range of practical applications. Our results reveal how the changing background flow profile modifies the inertial focusing of particles. We illustrate enhanced lateral separation of particles by size in a number of scenarios and find that focusing times can be roughly separated into two regimes. These results suggest our model might aid with parameter choices for separation of particles by size.
Wiener integrals with respect to the Hermite random field and applications to the wave equation
Creators: name: de La Cerda, Jorge Clarke
name: Tudor, Ciprian A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: The Hermite random field has been introduced as a limit of some weighted Hermite variations of the fractional Brownian sheet. In this work we define it as a multiple integral with respect to the standard Brownian sheet and introduce Wiener integrals with respect to it. As an application we study the wave equation driven by the Hermite sheet. We prove the existence of the solution and we study the regularity of its sample paths, the existence of the density and of its local times. 2000 AMS Classification Numbers: 60F05, 60H05, 60G18.
description: The final publication is available at Springer via http://dx.doi.org/10.1007/s13348-014-0108-9
A Global Astrometric Solution for Pan-STARRS referenced to ICRF2
Creators: name: Berghea, C. T.
name: Makarov, V. V.
name: Frouard, J.
name: Hennessy, G. S.
name: Dorland, B. N.
name: Veillette, D. R.
name: Dudik, R. P.
name: Magnier, E. A.
name: Burgett, W. S.
name: Chambers, K. C.
name: Denneau, L.
name: Flewelling, H.
name: Kaiser, N.
name: Tonry, J. L.
name: Wainscoat, R. J.
name: Sesar, B.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We describe development and application of a Global Astrometric Solution (GAS) to the problem of Pan-STARRS1 (PS1) astrometry. Current PS1 astrometry is based on differential astrometric measurements using 2MASS reference stars, thus PS1 astrometry inherits the errors of the 2MASS catalog. The GAS, based on a single, least squares adjustment to approximately 750k grid stars using over 3000 extragalactic objects as reference objects, avoids this catalog-to-catalog propagation of errors to a great extent. The GAS uses a relatively small number of Quasi-Stellar Objects (QSOs, or distant AGN) with very accurate (<1 mas) radio positions, referenced to the ICRF2. These QSOs provide a hard constraint in the global least squares adjustment. Solving such a system provides absolute astrometry for all the stars simultaneously. The concept is much cleaner than conventional astrometry but is not easy to perform for large catalogs. In this paper we describe our method and its application to Pan-STARRS1 data. We show that large-scale systematic errors are easily corrected but our solution residuals for position (~60 mas) are still larger than expected based on simulations (~10 mas). We provide a likely explanation for the reason the small-scale residual errors are not corrected in our solution as would be expected.
description: 39 pages, 19 figures, accepted by AJ
Mirror mesons at the Large Hadron Collider (LHC)
Creators: name: Triantaphyllou, George
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Physics (physics.gen-ph)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The existence of mirror partners of Standard-Model fermions offers a viable alternative to a fundamental BEH mechanism, with the coupling corresponding to the gauged mirror generation symmetry becoming naturally strong at energies around 1 TeV. The resulting non-perturbative processes produce dynamical katoptron masses which might range from 0.1 to 1.15 TeV in a way circumventing usual problems with the S parameter. Moreover, they create mirror mesons belonging in two main groups, with masses differing from each other approximately by a factor of six and which might range approximately from 0.1 to 2.8 TeV. Since the corresponding phenomenology expected at hadron colliders is particularly rich, some interesting mirror-meson cross-sections are presented, something that might also lead to a deeper understanding of the underlying mirror fermion structure. Among other findings, results in principle compatible with indications from LHC concerning decays of new particles to two photons are analyzed.
description: 34 pages, 5 figures
VLBA observations of radio faint Fermi-LAT sources above 10 GeV
Creators: name: Lico, R.
name: Giroletti, M.
name: Orienti, M.
name: D'Ammando, F.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The first Fermi-LAT High-energy source catalog (1FHL), containing gamma-ray sources detected above 10 GeV, is an ideal sample to characterize the physical properties of the most extreme gamma-ray sources. We investigate the pc scale properties of a sub-sample of radio faint 1FHL sources with the aim to confirm the proposed blazar associations, by revealing a compact high brightness temperature radio core, and we propose new low-frequency counterparts for the unassociated gamma-ray sources (UGS). Moreover, we increase the number of 1FHL sources with high resolution observations to explore the possible connection between radio and gamma rays at E >10 GeV. We observed 84 1FHL sources, mostly blazars of High Synchrotron Peaked (HSP) type, in the northern sky with the Very Long Baseline Array (VLBA) at 5 GHz. These sources lack high resolution radio observations and have at least one NVSS counterpart within the 95% confidence radius. For those sources without a well identified radio counterpart we exploit the VLBA multiple phase-center correlation capability to discern among the possible low-frequency candidates. For about 93% of the sources of our sample we reveal a compact high brightness temperature radio core, supporting their proposed blazar association. The vast majority of the detected sources are radio weak, with a median VLBI flux density value of 16.3 mJy. For the detected sources we obtain an average brightness temperature of the order of $2\times10^{10} \, \rm{K}$. We find a compact component for 16 UGS, for which we propose a new low-frequency association. We find brightness temperature values which do not require high Doppler factors, and are in agreement with the expected values for the equipartition of energy between particles and magnetic field. We find strong indications about the blazar nature of all of the detected UGS, for which we propose new low-frequency associations.
description: 11 pages, 5 figures. accepted for publication in Astronomy & Astrophysics
Supplementary Information from Ancient Y. pestis genomes lack the virulence-associated YpfΦ prophage present in modern pandemic strains
Creators: name: Bonczarowska, Joanna H.
name: Susat, Julian
name: Krause-Kyora, Ben
name: Dangvard Pedersen, Dorthe
name: Boldsen, Jesper
name: Agersnap Larsen, Lars
name: Seeberg, Lone
name: Nebel, Almut
name: Unterweger, Daniel
Publisher: name: The Royal Society
Year: 2023
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: Health Care
subject: Diseases
classificationCode: 111706
subject: Epidemiology
classificationCode: 60408
subject: Genomics

description: This file contains supplementary figures 2-5 and tables 2, 4-8.
Comparative analysis of machine learning methods for active flow control
Creators: name: Pino, Fabio
name: Schena, Lorenzo
name: Rabault, Jean
name: Mendez, Miguel A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Machine Learning (cs.LG)
subject: Neural and Evolutionary Computing (cs.NE)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Machine learning frameworks such as Genetic Programming (GP) and Reinforcement Learning (RL) are gaining popularity in flow control. This work presents a comparative analysis of the two, bench-marking some of their most representative algorithms against global optimization techniques such as Bayesian Optimization (BO) and Lipschitz global optimization (LIPO). First, we review the general framework of the model-free control problem, bringing together all methods as black-box optimization problems. Then, we test the control algorithms on three test cases. These are (1) the stabilization of a nonlinear dynamical system featuring frequency cross-talk, (2) the wave cancellation from a Burgers' flow and (3) the drag reduction in a cylinder wake flow. We present a comprehensive comparison to illustrate their differences in exploration versus exploitation and their balance between `model capacity' in the control law definition versus `required complexity'. We believe that such a comparison paves the way toward the hybridization of the various methods, and we offer some perspective on their future development in the literature on flow control problems.
description: submitted to Journal of Fluid Mechanics
Optical, UV, and X-Ray Evidence for a 7-Year Stellar Cycle in Proxima Centauri
Creators: name: Wargelin, B. J.
name: Saar, S. H.
name: Pojmański, G.
name: Drake, J. J.
name: Kashyap, V. L.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Stars of stellar type later than about M3.5 are believed to be fully convective and therefore unable to support magnetic dynamos like the one that produces the 11-year solar cycle. Because of their intrinsic faintness, very few late M stars have undergone long-term monitoring to test this prediction, which is critical to our understanding of magnetic field generation in such stars. Magnetic activity is also of interest as the driver of UV and X-ray radiation, as well as energetic particles and stellar winds, that affect the atmospheres of close-in planets that lie within habitable zones, such as the recently discovered Proxima b. We report here on several years of optical, UV, and X-ray observations of Proxima Centauri (GJ 551; dM5.5e): 15 years of ASAS photometry in the V band (1085 nights) and 3 years in the I band (196 nights), 4 years of Swift XRT and UVOT observations (more than 120 exposures), and 9 sets of X-ray observations from other X-ray missions (ASCA, XMM-Newton, and three Chandra instruments) spanning 22 years. We confirm previous reports of an 83-day rotational period and find strong evidence for a 7-year stellar cycle, along with indications of differential rotation at about the solar level. X-ray/UV intensity is anti-correlated with optical V-band brightness for both rotational and cyclical variations. From comparison with other stars observed to have X-ray cycles we deduce a simple empirical relationship between X-ray cyclic modulation and Rossby number, and we also present Swift UV grism spectra covering 2300-6000 Å.
description: 19 pages with 15 figures. Submitted to MNRAS 2016 Jul 1; revised version accepted 2016 Oct 3 and published online 2016 Oct 8. Available at http://dx.doi.org/10.1093/mnras/stw2570
A sharp-interface mesoscopic model for dendritic growth
Creators: name: Jančič, Mitja
name: Založnik, Miha
name: Kosec, Gregor
Publisher: name: arXiv
Year: 2022
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: The grain envelope model (GEM) describes the growth of envelopes of dendritic crystal grains during solidification. Numerically the growing envelopes are usually tracked using an interface capturing method employing a phase field equation on a fixed grid. Such an approach describes the envelope as a diffuse interface, which can lead to numerical artefacts that are possibly detrimental. In this work, we present a sharp-interface formulation of the GEM that eliminates such artefacts and can thus track the envelope with high accuracy. The new formulation uses an adaptive meshless discretization method to solve the diffusion in the liquid around the grains. We use the ability of the meshless method to operate on scattered nodes to accurately describe the interface, i.e., the envelope. The proposed algorithm combines parametric surface reconstruction, meshless discretization of parametric surfaces, global solution construction procedure and partial differential operator approximation using monomials as basis functions. The approach is demonstrated on a two-dimensional h-adaptive solution of diffusive growth of dendrites and assessed by comparison to a conventional diffuse-interface fixed-grid GEM.
description: 6 pages, conference preprint
Dependence of X-Ray Burst Models on Nuclear Reaction Rates
Creators: name: Cyburt, R. H.
name: Amthor, A. M.
name: Heger, A.
name: Johnson, E.
name: Keek, L.
name: Meisel, Z.
name: Schatz, H.
name: Smith, K.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: X-ray bursts are thermonuclear flashes on the surface of accreting neutron stars and reliable burst models are needed to interpret observations in terms of properties of the neutron star and the binary system. We investigate the dependence of X-ray burst models on uncertainties in (p,$γ$), ($α$,$γ$), and ($α$,p) nuclear reaction rates using fully self-consistent burst models that account for the feedbacks between changes in nuclear energy generation and changes in astrophysical conditions. A two-step approach first identified sensitive nuclear reaction rates in a single-zone model with ignition conditions chosen to match calculations with a state-of-the-art 1D multi-zone model based on the {\Kepler} stellar evolution code. All relevant reaction rates on neutron deficient isotopes up to mass 106 were individually varied by a factor of 100 up and down. Calculations of the 84 highest impact reaction rate changes were then repeated in the 1D multi-zone model. We find a number of uncertain reaction rates that affect predictions of light curves and burst ashes significantly. The results provide insights into the nuclear processes that shape X-ray burst observables and guidance for future nuclear physics work to reduce nuclear uncertainties in X-ray burst models.
description: 24 pages, 13 figures, 4 tables, submitted
Towards Unsupervised Learning based Denoising of Cyber Physical System Data to Mitigate Security Concerns
Creators: name: Akter, Mst Shapna
name: Shahriar, Hossain
Publisher: name: arXiv
Year: 2023
Subjects: subject: Signal Processing (eess.SP)
subject: Cryptography and Security (cs.CR)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: A dataset, collected under an industrial setting, often contains a significant portion of noises. In many cases, using trivial filters is not enough to retrieve useful information i.e., accurate value without the noise. One such data is time-series sensor readings collected from moving vehicles containing fuel information. Due to the noisy dynamics and mobile environment, the sensor readings can be very noisy. Denoising such a dataset is a prerequisite for any useful application and security issues. Security is a primitive concern in present vehicular schemes. The server side for retrieving the fuel information can be easily hacked. Providing the accurate and noise free fuel information via vehicular networks become crutial. Therefore, it has led us to develop a system that can remove noise and keep the original value. The system is also helpful for vehicle industry, fuel station, and power-plant station that require fuel. In this work, we have only considered the value of fuel level, and we have come up with a unique solution to filter out the noise of high magnitudes using several algorithms such as interpolation, extrapolation, spectral clustering, agglomerative clustering, wavelet analysis, and median filtering. We have also employed peak detection and peak validation algorithms to detect fuel refill and consumption in charge-discharge cycles. We have used the R-squared metric to evaluate our model, and it is 98 percent In most cases, the difference between detected value and real value remains within the range of 1L.
Efficient room-temperature molecular single-photon sources for quantum key distribution
Creators: name: Murtaza, Ghulam
name: Colautti, Maja
name: Hilke, Michael
name: Lombardi, Pietro
name: Cataliotti, Francesco Saverio
name: Zavatta, Alessandro
name: Bacco, Davide
name: Toninelli, Costanza
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Quantum Key Distribution (QKD) allows the distribution of cryptographic keys between multiple users in an information-theoretic secure way, exploiting quantum physics. While current QKD systems are mainly based on attenuated laser pulses, deterministic single-photon sources could give concrete advantages in terms of secret key rate (SKR) and security owing to the negligible probability of multi-photon events. Here, we introduce and demonstrate a proof-of-concept QKD system exploiting a molecule-based single-photon source operating at room temperature and emitting at 785nm. With an estimated SKR of 0.5 Mbps, our solution paves the way for room-temperature single-photon sources for quantum communication protocols.
description: 15 pages 5 figures