cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Theory and Design of Feasible Active Noise Control Systems for 3D Regions
Creators: name: Sun, Huiyuan
Publisher: name: The Australian National University
Year: 2022

description: This thesis advances Active Noise Control (ANC) over three-dimensional (3D) space using feasible loudspeaker and microphone array systems. By definition, ANC reduces unwanted acoustic noise by generating an anti-noise signal(s) from secondary loudspeakers. The concept of spatial ANC aims to reduce unwanted acoustic noise over a continuous 3D region, by utilizing multiple microphones and multiple secondary loudspeakers to create a large-sized quiet zone for listeners in three-dimensional space. However, existing spatial ANC techniques are usually impractical and difficult to implement due to their strict hardware requirements and high computation complexity. Therefore, this thesis explores various aspects of spatial ANC, seeking algorithms and techniques to promote the reliability and feasibility of ANC over space in real-life applications. The spherical harmonic analysis technique is introduced as the basis of conventional spatial ANC systems. This technique provides an accurate representation of a given spatial sound field using higher-order microphone (spherical microphone array) recordings. Hence, the residual noise field in a spatial ANC system can be effectively captured spatially by applying the spherical harmonic technique. Incorporating conventional spatial ANC methods, we developed a series of algorithms and methods that optimize conventional methods regarding array geometries and ANC algorithms, towards improving the feasibility of a conventional spatial ANC system involving the spherical harmonic analysis. Overall, motivated by feasible and realistic designs for spatial ANC systems, work included in this thesis mainly solves the three problems of: (i) the impracticality of realizing spherical microphone and loudspeaker arrays, (ii) achieving secondary channel estimation with microphones remote from their desired locations, and (iii) unreasonable delays inherent to frequency domain spatial ANC methods. Based on our work, we have stepped towards achieving a spatial ANC system in a real-world environment for people to enjoy silence in the control region with the reliable usage of resources and algorithms. Several contributions of this work are: (i) designing a 3D spatial ANC system using multiple circular microphone and loudspeaker arrays instead of spherical arrays, (ii) proposing a 3D spatial ANC method with remote microphone technique such that noise reduction over a region is achieved with microphones remote from the region, (iii) proposing a secondary channel estimation method using a moving higher-order microphone such that usage of an error microphone array is not necessary, (iv) deriving a time domain spherical harmonic analysis method for open spherical microphone array recording with less delay than in the frequency domain, and (v) designing a feed-forward adaptive spatial ANC algorithm incorporating the time domain spherical harmonic analysis technique to better minimize the noise in the region of interest.
Dynamics of a ground-state cooled ion colliding with ultra-cold atoms
Creators: name: Meir, Ziv
name: Sikorsky, Tomas
name: Ben-shlomi, Ruti
name: Akerman, Nitzan
name: Dallal, Yehonatan
name: Ozeri, Roee
Publisher: name: arXiv
Year: 2016
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Ultra-cold atom-ion mixtures are gaining increasing interest due to their potential applications in quantum chemistry, quantum computing and many-body physics. Here, we studied the dynamics of a single ground-state cooled ion during few, to many, Langevin (spiraling) collisions with ultra-cold atoms. We measured the ion's energy distribution and observed a clear deviation from Maxwell-Boltzmann to a Tsallis characterized by a power-law tail of high energies. Unlike previous experiments, the energy scale of atom-ion interactions is not determined by either the atomic cloud temperature or the ion's trap residual excess-micromotion energy. Instead, it is determined by the force the atom exerts on the ion during a collision which is then amplified by the trap dynamics. This effect is intrinsic to ion Paul traps and sets the lower bound of atom-ion steady-state interaction energy in these systems. Despite the fact that our system is eventually driven out of the ultra-cold regime, we are capable of studying quantum effects by limiting the interaction to the first collision.
description: Different format. New data analysis of the data in Fig. 1 with no significant effect on the reported results
Compensation for undefined behaviors during robot task execution by switching controllers depending on embedded dynamics in RNN
Creators: name: Suzuki, Kanata
name: Mori, Hiroki
name: Ogata, Tetsuya
Publisher: name: arXiv
Year: 2020
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Robotic applications require both correct task performance and compensation for undefined behaviors. Although deep learning is a promising approach to perform complex tasks, the response to undefined behaviors that are not reflected in the training dataset remains challenging. In a human-robot collaborative task, the robot may adopt an unexpected posture due to collisions and other unexpected events. Therefore, robots should be able to recover from disturbances for completing the execution of the intended task. We propose a compensation method for undefined behaviors by switching between two controllers. Specifically, the proposed method switches between learning-based and model-based controllers depending on the internal representation of a recurrent neural network that learns task dynamics. We applied the proposed method to a pick-and-place task and evaluated the compensation for undefined behaviors. Experimental results from simulations and on a real robot demonstrate the effectiveness and high performance of the proposed method.
description: To appear in IEEE Robotics and Automation Letters (RA-L) and IEEE International Conference on Robotics and Automation (ICRA 2021)
Nonradial stability of marginal stable circular orbits in stationary axisymmetric spacetimes
Creators: name: Ono, Toshiaki
name: Suzuki, Tomohito
name: Asada, Hideki
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We study linear nonradial perturbations and stability of a marginal stable circular orbit (MSCO) such as the innermost stable circular orbit (ISCO) of a test particle in stationary axisymmetric spacetimes which possess a reflection symmetry with respect to the equatorial plane. The proposed approach is applied to Kerr solution and Majumdar-Papapetrou solution to Einstein equation. Finally, we reexamine MSCOs for a modified metric of a rapidly spinning black hole that has been recently proposed by Johannsen and Psaltis [PRD, 83, 124015 (2011)]. We show that, for the Johannsen and Psaltis's model, circular orbits that are stable against radial perturbations for some parameter region become unstable against vertical perturbations. This suggests that the last circular orbit for this model may be larger than the ISCO.
description: 6 pages, 3 figures, appendix added, accepted by PRD
Metagenomics Binning Using Assembly Graphs
Creators: name: Mallawaarachchi, Vijini
Publisher: name: The Australian National University
Year: 2022

description: Metagenomics involves the study of various genetic material obtained directly from communities of microorganisms living in natural environments. The field of metagenomics has provided valuable insights into the structure, diversity and ecology within microbial communities. Recent developments in high-throughput sequencing technologies have enabled metagenomics to analyse samples from environments, without having to rely on culture-based methods. Once an environmental sample is sequenced, a process called metagenomics binning is used to cluster the sequences into bins that represent different taxonomic groups such as species, genera or higher levels. Various efforts have been made throughout the past to bin metagenomic sequences. One approach followed is to bin raw sequencing reads prior to assembly. However, reads are considered too short to produce accurate and reliable binning results for downstream analysis. Hence, the standard approach followed during metagenomics analysis is to assemble short reads into longer sequences called contigs and then bin these resulting contigs. Existing metagenomic contig-binning methods rely on the composition and abundance information of the contigs, and face challenges when binning short contigs and contigs with similar composition and abundance. Contigs are derived from the underlying assembly graph which contains valuable connectivity information among contigs. However, existing metagenomic contig-binning methods do not consider the assembly graph in the binning process. Firstly, this thesis describes a bin refinement tool named GraphBin that improves existing metagenomic binning results using assembly graphs. GraphBin makes use of the assembly graph and a label propagation method to refine binning results of existing contig-binning tools by correcting mis-binned contigs and recovering short contigs that are discarded. Secondly, this thesis explains how to enable the detection of shared sequences among multiple species from assembly graphs and introduces a tool named GraphBin2 which can perform overlapped binning. GraphBin2 makes use of the assembly graph and the coverage information of contigs which enables the detection of contigs that may belong to multiple species. Thirdly, this thesis introduces a stand-alone approach named MetaCoAG to bridge metagenomics binning and assembly by incorporating composition, coverage and assembly graphs. MetaCoAG uses single-copy marker genes to estimate the number of initial bins, assigns contigs into bins iteratively and adjusts the number of bins dynamically throughout the binning process. In summary, this thesis discusses the challenges in binning metagenomic contigs, the shortcomings of existing metagenomic contig-binning tools and presents how the assembly graph can be incorporated to improve metagenomics binning.
Studien zur Erkenntnis des Übernatürlichen in der Frühscholastik
Creators: name: Landgraf, Artur Michael
Publisher: name: Scholastik
Year: 1970

description: Scholastik, Bd. 4 Nr. 1 (1929): Scholastik. Vierteljahresschrift für Theologie und Philosophie, Band 4, Heft 1
title: Liquid embolic agents for acute colon bleeding as definitive treatment
Creators: name: URBANO, José
Publisher: name: European Congress of Radiology
Year: 2012
Subjects: subject: Colon
subject: Interventional vascular
subject: Management
subject: Catheter arteriography
subject: CT-Angiography
subject: CT
subject: Embolisation
subject: Technical aspects
subject: Treatment effects
subject: Haemorrhage
subject: Diverticula
subject: Acute

description: Purpose Methods and Materials Results Conclusion References Personal Information
description: Purpose: Acutely hemicolectomy is associated with high morbidity (>50%) and mortality (> 15 %). Embolization sometimes may be an alternative. We show the technique and our experience in embolization of acute focal bleedings in the colon using liquid embolic...
Cold Atmospheric Plasma discharged in Water and its Potential Use in Cancer Therapy
Creators: name: Chen, Zhitong
name: Cheng, Xiaoqian
name: Lin, Li
name: Keidar, Michael
Publisher: name: arXiv
Year: 2016
Subjects: subject: Medical Physics (physics.med-ph)
subject: Biological Physics (physics.bio-ph)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Cold atmospheric plasma (CAP) has been emerged as a novel technology for cancer treatment. CAP can directly treat cells and tissue but such direct application is limited to skin or can be invoked as a supplement during open surgery. In this study we report indirect plasma treatment using CAP discharged in DI water using three gases as carriers (argon, helium and nitrogen). Plasma stimulated water was applied to human breast cancer cell line (MDA-MB-231). MTT assay tests showed that using argon plasma had the strongest effect on inducing apoptosis in cultured human breast cancer cells. This result is attributed to the elevated production of the reactive oxygen species and reactive nitrogen species in water in the case of argon plasma.
description: arXiv admin note: text overlap with arXiv:1607.06775
Spectral multiplier theorems for abstract differential operators
Creators: name: Sharma, Himani
Publisher: name: The Australian National University
Year: 2022

description: We establish new spectral multiplier theorems for abstract differential operators by working on various functional calculus methods obtained using different reproducing formulas. Here we have put together results from two articles, one of them is published, and the other, which is joint work with van Neerven and Portal, is currently being reviewed. Apart from this, we also give an alternative approach to a result of Bailey and Sikora on square function estimates for the Laplace operator on certain non-doubling manifolds and extend it to a more abstract setting. In the results from the published article, we consider specific group generators which are abstraction of first order differential operators. There we show spectral multiplier estimates similar to one available for $\frac{d}{d x}$ on $L^p(\R)$ assuming only that the group is bounded on $L^2$ rather than $L^p$. That is, we only assume that the operator $iD$ generates a group that has finite propagation speed on $L^2$ and satisfy some Sobolev embedding property. We, in fact, show R-bounded H{\"o}rmander calculus results for the square of a perturbed Hodge-Dirac operator (recovering, in particular, the result for uniformly elliptic divergence form operators with $L^{\infty}$ coefficients). For the results taken from the second article, we consider operators acting on a UMD Banach lattice $X$ that have the same algebraic structure as the position and momentum operators associated with the harmonic oscillator $-\frac12\Delta + \frac12|x|^{2} $ acting on $L^{2}(\mathbb{R}^{d})$. More precisely, we consider abstract harmonic oscillators of the form $\frac{1}{2} \sum _{j=1} ^{d}(A_{j}^{2}+B_{j}^{2})$ for tuples of operators $A=(A_{j})_{j=1} ^{d}$ and $B=(B_{k})_{k=1} ^{d}$, where $iA_j$ and $iB_k$ are assumed to generate $C_{0}$ groups and to satisfy the canonical commutator relations. We prove functional calculus results for these abstract harmonic oscillators that match classical H\"ormander spectral multiplier estimates for the harmonic oscillator $-\frac{1}{2}\Delta + \frac{1}{2}|x|^{2}$ on $L^{p}(\mathbb{R}^{d})$. This covers situations where the underlying metric measure space is not doubling and the use of function spaces that are not particularly well suited to extrapolation arguments. For instance, as an application we treat the harmonic oscillator on mixed norm Bargmann-Fock spaces. In addition to this, we show, for future application, an example of Weyl pairs on certain non-commutatice $L^p$ spaces , indicating that proving spectral multiplier estimates for the harmonic oscillators in this setting should be possible.
Skew characters and cyclic sieving
Creators: name: Alexandersson, Per
name: Pfannerer, Stephan
name: Rubey, Martin
name: Uhlin, Joakim
Publisher: name: arXiv
Year: 2020
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05E10 (Primary) 05E05, 05E18 (Secondary)

description: In 2010, B. Rhoades proved that promotion together with the fake-degree polynomial associated with rectangular standard Young tableaux give an instance of the cyclic sieving phenomenon. We extend this result to all skew standard Young tableaux where the fake-degree polynomial evaluates to nonnegative integers at roots of unity, albeit without being able to specify an explicit group action. Put differently, we determine in which cases a skew character of the symmetric group carries a permutation representation of the cyclic group. We use a method proposed by N. Amini and the first author, which amounts to establishing a bound on the number of border-strip tableaux of skew shape. Finally, we apply our results to the invariant theory of tensor powers of the adjoint representation of the general linear group. In particular, we prove the existence of a bijection between permutations and J. Stembridge's alternating tableaux, which intertwines rotation and promotion.
title: The combined role of intravenous contrast enhanced ultrasound (CEUS) and computed tomography (CT) in liver abscess diagnosis
Creators: name: Feier, Diana
Publisher: name: European Congress of Radiology
Year: 2012
Subjects: subject: Abscess
subject: Contrast agent-intravenous
subject: Ultrasound
subject: CT
subject: Abdomen

description: Learning objectives Background Imaging findings OR Procedure details Conclusion Personal Information References
description: Learning objectives: Liver abscesses are a severe, progressive entity, with a high risk of developing into sepsis and liver failure, described as single or multiple circumscribed lesions, most commonly placed inside the right lobe and caused by various germs, mainly...
Thermal stability of two-dimensional Topological Color Code
Creators: name: Mohseninia, Razieh
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Thermal stability of the Topological Color Code in presence of a thermal bath is studied. We study the Lindblad evolution of the observables in the weak coupling limit of the Born-Markov approximation. The auto-correlation functions of the observables are used as a figure of merit for the thermal stability. We show that all of the observables auto-correlation functions decay exponentially in time. By finding a lower bound of the decay rate, which is a constant independent of the system size, we show that the Topological Color Code is unstable against thermal fluctuations from the bath at finite temperature, even though it is stable at T=0 against local quantum perturbations.
description: 17 pages, 4 figures, Accepted for publication in Physical Review A
title: Ð¢ÐµÐºÑÑÐ¾ÑÐµÐ½ÑÑÐ¸ÑÐ½Ð¾ÑÑÑ ÐºÐ°Ðº Ð¼ÐµÑÐ¾Ð´ ÑÐ¾ÑÐ¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ ÑÐ°Ð·Ð»Ð¸ÑÐ½ÑÑ ÐºÐ¾Ð¼Ð¿ÐµÑÐµÐ½ÑÐ¸Ð¹ Ð¸ Ð½Ð°Ð²ÑÐºÐ¾Ð² Ð¾Ð±ÑÑÐ°ÑÑÐ¸Ñ ÑÑ
title: Text-centricity as a method of developing various competencies and skills of students
Creators: name: ÐÐ¾ÑÐ±ÑÐ½Ð¾Ð²Ð°, ÐÐ°ÑÐ¾Ð»Ð¸Ð½Ð°
Publisher: name: ÐÐÐÐÐ¢ÐÐ¥-ÐÐ ÐÐ¡Ð¡
Year: 2023
Subjects: Ð¼ÐµÑÐ¾Ð´Ð¸ÐºÐ°
ÑÐµÐºÑÑÐ¾ÑÐµÐ½ÑÑÐ¸ÑÐ½Ð¾ÑÑÑ
ÑÐ·ÑÐºÐ¾Ð²Ð¾Ðµ ÑÐ¾Ð²ÐµÑÑÐµÐ½ÑÑÐ²Ð¾Ð²Ð°Ð½Ð¸Ðµ
methodology
text-centricity
language improvement

description: Ð ÑÑÐ°ÑÑÐµ Ð¿ÑÐµÐ´ÑÑÐ°Ð²Ð»ÐµÐ½Ð° ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸Ñ Ð¾ÑÑÐ°Ð±Ð¾ÑÐºÐ¸ Ð½ÐµÑÐºÐ¾Ð»ÑÐºÐ¸Ñ Ð°ÑÐ¿ÐµÐºÑÐ¾Ð² ÑÐ·ÑÐºÐ° Ð² ÑÐ°Ð¼ÐºÐ°Ñ ÑÑÐ¾ÑÐ½Ð¾Ð¹ Ð´ÐµÑÑÐµÐ»ÑÐ½Ð¾ÑÑÐ¸. ÐÐ°ÑÐµÑÐ¸Ð°Ð»Ð¾Ð¼ Ð´Ð»Ñ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ Ð¿Ð¾ÑÐ»ÑÐ¶Ð¸Ð» ÑÐµÐºÑÑ ÐºÐ°Ðº Ð¾ÑÐ½Ð¾Ð²Ð° Ð¸Ð·ÑÑÐµÐ½Ð¸Ñ ÑÐ·ÑÐºÐ¾Ð²ÑÑ Ð´Ð¸ÑÑÐ¸Ð¿Ð»Ð¸Ð½. Ð¦ÐµÐ»Ñ ÑÑÐ°ÑÑÐ¸ â Ð½Ð°Ð³Ð»ÑÐ´Ð½Ð¾ Ð¿Ð¾ÐºÐ°Ð·Ð°ÑÑ ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸Ñ Ð¾ÑÑÐ°Ð±Ð¾ÑÐºÐ¸ ÑÐ°Ð·Ð»Ð¸ÑÐ½ÑÑ ÑÑÐ°Ð¿Ð¾Ð² ÑÑÐ¾ÐºÐ° Ñ ÑÐµÑÐµÐ´Ð¾Ð²Ð°Ð½Ð¸ÐµÐ¼ Ð½ÐµÑÐºÐ¾Ð»ÑÐºÐ¸Ñ Ð²Ð¸Ð´Ð¾Ð² ÑÐ°Ð±Ð¾Ñ â Ð¸Ð½Ð´Ð¸Ð²Ð¸Ð´ÑÐ°Ð»ÑÐ½Ð¾Ð¹, Ð¿Ð°ÑÐ½Ð¾Ð¹, Ð³ÑÑÐ¿Ð¿Ð¾Ð²Ð¾Ð¹.
description: The article presents a technology for practicing several aspects of language as part of lesson activities. The material for the study was the text as the basis for the study of language disciplines. The purpose of the article is to clearly show the technology for practicing various stages of a lesson with alternating several types of work: individual, pair, group.
Numerical analysis of a hysteresis model in perovskite solar cells
Creators: name: Zhou, Yecheng
name: Huang, Fuzhi
name: Cheng, Yi-Bing
name: Gray-Weale, Angus
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Previously, we proposed that the polarization and capacitive charge in \ce{CH3NH3PbI3} screens the external electric field that hinders charge transport. We argue here that this screening effect is in significant part responsible for the power conversion characteristics and hysteresis in \ce{CH3NH3PbI3} photovoltaic cells. In this paper, we implement capacitive charge and polarization charge into the numerical model that we have developed for perovskite solar cells. Fields induced by these two charges screen the applied hindering field, promote charge transport, and improve solar cell's performance, especially in solar cells with short diffusion lengths. This is the reason why perovskite solar cells made from simple fabrication methods can achieve high performance. More importantly, with relaxations of capacitive charge and polarization charge, we quantitatively reproduce experimental "anomalous" hysteresis J-V curves. This reveals that both polarization relaxation and ions relaxation could contribute to anomalous hysteresis in perovskite solar cells.
description: 21 pages, 6 figures
title: External Auditory Canal: An Infrequent Reference in Final Diagnosis of Temporal Bone Studies
Creators: name: Alcolado Jaramillo, Ana María
Publisher: name: European Congress of Radiology
Year: 2012
Subjects: subject: Ear / Nose / Throat
subject: CT-High Resolution
subject: Education
subject: Computer Applications-3D
subject: Pathology

description: Learning objectives Background Imaging findings OR Procedure details Conclusion Personal Information References
description: Learning objectives: Benign lesions of the external auditory canal (EAC) are an infrequent cause of temporal bone CT scan requests. Maybe because is "only" a conduit, and the relevant anatomical structures are located in the middle and inner ear, usually we are not well...
Scaling of macroscopic superpositions close to a quantum phase transition
Creators: name: Abad, Tahereh
name: Karimipour, Vahid
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: It is well known that in a quantum phase transition (QPT), entanglement remains short ranged [Osterloh et al., Nature 416 608-610 (2005)]. We ask if there is a quantum property entailing the whole system which diverges near this point. Using the recently proposed measures of quantum macroscopisity, we show that near a quantum critical point, it is the effective size of macroscopic superposition between the two symmetry breaking states which grows to the scale of system size and its derivative with respect to the coupling shows both singular behavior and scaling properties.
description: The final version to appear in Physical Review B
A combinatorial expansion of vertical-strip LLT polynomials in the basis of elementary symmetric functions
Creators: name: Alexandersson, Per
name: Sulzgruber, Robin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Combinatorics (math.CO)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics
subject: 05E05, 05A19, 05E10

description: We give a new characterization of the vertical-strip LLT polynomials $\mathrm{LLT}_P(x;q)$ as the unique family of symmetric functions that satisfy certain combinatorial relations. This characterization is then used to prove an explicit combinatorial expansion of vertical-strip LLT polynomials in terms of elementary symmetric functions. Such formulas were conjectured independently by A. Garsia et al. and the first named author, and are governed by the combinatorics of orientations of unit-interval graphs. The obtained expansion is manifestly positive if $q$ is replaced by $q+1$, thus recovering a recent result of M. D'Adderio. Our results are based on linear relations among LLT polynomials that arise in the work of D'Adderio, and of E. Carlsson and A. Mellit. To some extent these relations are given new bijective proofs using colorings of unit-interval graphs. As a bonus we obtain a new characterization of chromatic quasisymmetric functions of unit-interval graphs.
description: 49 pages. This version has updated .bib, and some improvements in section 6
Optimising Stable Radicals for the Electrochemical Generation of Reactive Intermediates
Creators: name: Rogers, Fergus
Publisher: name: The Australian National University
Year: 2022

description: This thesis concentrates on the electrochemical activation of stable-radical adducts to generate reactive intermediates for small molecule and polymer chemistry. The majority of this work concerns the computational modelling and design of such compounds using high-level, ab inito quantum chemistry methods. The main findings are as follows. It is first shown that adducts based on highly-stable Blatter and Kuhn-type radicals undergo mesolytic cleavage upon one-electron oxidation, generating reactive carbocations or carbon-centred radicals. Substituent effects are employed to optimise this chemistry, either to reduce the oxidation potential of the adduct to favour the production of radicals, or by altering the bond-dissociation free energy of mesolytic cleavage to control the rate of fragmentation. Computational chemistry is then used to explore the scope for stable-radical adducts as electrochemically activated alkylating agents. SN2-type methylations of pyridine are studied over a broad range of nitroxide, triazinyl, and verdazyl-based adducts (X-Me). Here, high oxidation potentials are found to render low SN2 barriers to methylation and thus more reactive agents, highlighting the suitability of commercially available, (2,2,6,6-tetramethylpiperidin-1-yl)oxyl (TEMPO), in this role. Modelling is also applied to study the triboelectrification of polymeric insulators. Here, material-specific charging properties and dissipation rates are found to be connected to the stability of anionic polymer fragments to oxidation, and cationic fragments to reduction. Computational methods are then used to study the low-frequency (Terahertz) vibrations in molecular crystals. A method benchmark is presented - identifying parameters that reliably produce accurate simulated spectra - along with several new analytical tools built for the assessment of spectral data.
Most simple extensions of $\mathsf{FL_e}$ are undecidable
Creators: name: Galatos, Nikolaos
name: John, Gavin St.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Logic (math.LO)
subject: FOS: Mathematics
subject: 03B47 (Primary) 08B15, 03G10, 06F05 (Secondary)

description: All known structural extensions of the substructural logic $\mathsf{FL_e}$, Full Lambek calculus with exchange/commutativity, (corresponding to subvarieties of commutative residuated lattices axiomatized by $\{\vee, \cdot, 1\}$-equations) have decidable theoremhood; in particular all the ones defined by knotted axioms enjoy strong decidability properties (such as the finite embeddability property). We provide infinitely many such extensions that have undecidable theoremhood, by encoding machines with undecidable halting problem. An even bigger class of extensions is shown to have undecidable deducibility problem (the corresponding varieties of residuated lattices have undecidable word problem); actually with very few exceptions, such as the knotted axioms and the other prespinal axioms, we prove that undecidability is ubiquitous. Known undecidability results for non-commutative extensions use an encoding that fails in the presence of commutativity, so and-branching counter machines are employed. Even these machines provide encodings that fail to capture proper extensions of commutativity, therefore we introduce a new variant that works on an exponential scale. The correctness of the encoding is established by employing the theory of residuated frames.
description: 45 pages
title: Perirenal urinomas a complication of the upper urinary tract lithiasis: CT aspects
Creators: name: Petrisor, Otilia
Publisher: name: European Congress of Radiology
Year: 2012
Subjects: subject: Calcifications / Calculi
subject: Computer Applications-Detection, diagnosis
subject: CT
subject: Urinary Tract / Bladder

description: Purpose Methods and Materials Results Conclusion References Personal Information
description: Purpose: To present and illustrate the current and particular aspects of perirenal urinomas due to obstructive lithiasis of the upper urinary tract. Background: Urinoma is a collection of urine in a body cavity or soft tissue resulting from the extravasation...
All Majorana Models with Translation Symmetry are Supersymmetric
Creators: name: Hsieh, Timothy H.
name: Halász, Gábor B.
name: Grover, Tarun
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We establish results similar to Kramers and Lieb-Schultz-Mattis theorems but involving only translation symmetry and for Majorana modes. In particular, we show that all states are at least doubly degenerate in any one and two dimensional array of Majorana modes with translation symmetry, periodic boundary conditions, and an odd number of modes per unit cell. Moreover, we show that all such systems have an underlying $\mathcal{N}=2$ supersymmetry and explicitly construct the generator of the supersymmetry. Furthermore, we establish that there cannot be a unique gapped ground state in such one dimensional systems with anti-periodic boundary conditions. These general results are fundamentally a consequence of the fact that translations for Majorana modes are represented projectively, which in turn stems from the anomalous nature of a single Majorana mode. An experimental signature of the degeneracy arising from supersymmetry is a zero-bias peak in tunneling conductance.
description: Published version, with explicit experimental signature of supersymmetry via zero-bias tunneling conductance. 5 pages, 2 figures, 1 page supplementary
Models and Algorithms for Metagenomics Analysis and Plasmid Classification
Creators: name: Wickramarachchi, Anuradha
Publisher: name: The Australian National University
Year: 2022

description: Metagenomics studies have provided key insights into the composition and structure of microbial communities found in different environments. Among the techniques used to analyze metagenomics data, binning is considered a crucial step to characterize the different species of microorganisms present. Metagenomics binning can be extended further towards determination of plasmids and chromosomes to study environmental adaptations. The field of metagenomics binning is mostly done on contigs from genome assemblies. Metagenomics studies are mostly performed with short read sequencing. Direct binning of short reads suffers from insufficient species-specific signal, thus they are usually assembled into longer contigs before binning. Therefore, the emergence of long-read sequencing technologies gives us the opportunity to study the binning of long reads directly, where such studies have been carried out in limited numbers. Firstly, this thesis presents the challenges in binning long reads compared to contigs assembled from short reads. One key challenge in binning long reads is the absence of coverage information, which is typically obtained from assembly. Moreover, the scale of long reads compared to contigs demands more computationally efficient methods for binning. Therefore, we develop MetaBCC-LR to address these challenges and perform metagenomics binning of long reads. We introduce the concept of k-mer coverage histogram to estimate the coverage of long reads without alignments and use a sampling strategy to handle the immense number of long reads. Since MetaBCC-LR is limited by the use of coverage and composition information in a stepwise manner, we further develop LRBinner to combine the coverage and composition information. This enables LRBinner to effectively combine coverage and composition features and use them simultaneously for binning. LRBinner also implemented a novel clustering algorithm that performs better on binning long-read datasets from species with varying abundances. Moreover, we propose OBLR to improve the coverage estimation of long reads via a read-overlap graph instead of k-mers. The read-overlap graph also enables OBLR to perform probabilistic sampling to better recover low-abundant species. Secondly, we investigate opportunities to improve plasmid detection which is considered as a binary plasmid-chromosome classification problem. We introduce PlasLR that enables adaptation of plasmid prediction tools designed for contigs to classify long and error-prone reads. We also develop GraphPlas that uses the assembly graph to improve plasmid classification results for assembled contigs. In summary, this thesis presents the progressive development of models and algorithms for metagenomics binning and plasmid classification.
(m,n)-String in (p,q)-String and (p,q)-Five Brane Background
Creators: name: Kluson, J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study dynamics of (m,n)-string in (p,q)-five brane and (p,q)-string background. We determine world-volume stress energy tensor and we analyze the dependence of the string's dynamics on the values of the charges (m,n) and the value of the angular momentum.
description: 20 pages, v2:reference added
Discriminative Video Representation Learning
Creators: name: Wang, Jue
Publisher: name: The Australian National University
Year: 2022

description: Representation learning is a fundamental research problem in the area of machine learning, refining the raw data to discover representations needed for various applications. However, real-world data, particularly video data, is neither mathematically nor computationally convenient to process due to its semantic redundancy and complexity. Video data, as opposed to images, includes temporal correlation and motion dynamics, but the ground truth label is normally limited to category labels, which makes the video representation learning a challenging problem. To this end, this thesis addresses the problem of video representation learning, specifically discriminative video representation learning, which focuses on capturing useful data distributions and reliable feature representations improving the performance of varied downstream tasks. We argue that neither all frames in one video nor all dimensions in one feature vector are useful and should be equally treated for video representation learning. Based on this argument, several novel algorithms are investigated in this thesis under multiple application scenarios, such as action recognition, action detection and one-class video anomaly detection. These proposed video representation learning methods produce discriminative video features in both deep and non-deep learning setups. Specifically, they are presented in the form of: 1) an early fusion layer that adopts a temporal ranking SVM formulation, agglomerating several optical flow images from consecutive frames into a novel compact representation, named as dynamic optical flow images; 2) an intermediate feature aggregation layer that applies weakly-supervised contrastive learning techniques, learning discriminative video representations via contrasting positive and negative samples from a sequence; 3) a new formulation for one-class feature learning that learns a set of discriminative subspaces with orthonormal hyperplanes to flexibly bound the one-class data distribution using Riemannian optimisation methods. We provide extensive experiments to gain intuitions into why the learned representations are discriminative and useful. All the proposed methods in this thesis are evaluated on standard publicly available benchmarks, demonstrating state-of-the-art performance.
Ground states for a fractional scalar field problem with critical growth
Creators: name: Ambrosio, Vincenzo
Publisher: name: arXiv
Year: 2016
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We prove the existence of a ground state solution for the following fractional scalar field equation $(-Δ)^{s} u= g(u)$ in $\mathbb{R}^{N}$ where $s\in (0,1), N> 2s$,$ (-Δ)^{s}$ is the fractional Laplacian, and $g\in C^{1, β}(\mathbb{R}, \mathbb{R})$ is an odd function satisfying the critical growth assumption.
Tensor product categorifications, Verma modules and the blob 2-category
Creators: name: Lacabanne, Abel
name: Naisse, Grégoire
name: Vaz, Pedro
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Algebra (math.QA)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: We construct a dg-enhancement of KLRW algebras that categorifies the tensor product of a universal $\mathfrak{sl}_2$ Verma module and several integrable irreducible modules. When the integrable modules are two-dimensional, we construct a categorical action of the blob algebra on derived categories of these dg-algebras which intertwines the categorical action of $\mathfrak{sl}_2$. From the above we derive a categorification of the blob algebra.
description: v2, 88 pages, reviewed version
title: The Many Faces of Pancreatic Serous Cystadenoma: Radiologic and Pathologic Correlation
Creators: name: Chu, Linda
Publisher: name: European Congress of Radiology
Year: 2012
Subjects: subject: Neoplasia
subject: Diagnostic procedure
subject: CT
subject: Pancreas

description: Learning objectives Background Imaging findings OR Procedure details Conclusion Personal Information References
description: Learning objectives: 1) Illustrate the spectrum of CT appearances of serous cystadenomas with radiologic and pathologic correlation 2) Review the differential diagnosis of pancreatic masses that may mimic serous cystadenomas 3) Review key CT features that differentiate...
Synthesis of benzoxazoles via a silver mediated oxidation
Creators: name: Wong, Chloe D.
name: Ganjooi, Kimiya
name: Verbarendse, Maetja
name: Travis, Jessica M.
name: Troftgruben, Mark H. S.
name: Mora, Hannah R.
name: Oldenburg, Isabella
name: Lammert, Robert
name: Lazaro, Horacio
name: Eagon, Scott
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Molecular Biology
subject: Neuroscience
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: A silver carbonate-based method to synthesize benzoxazoles from imines has been developed. The reaction is extremely mild, tolerates several heterocycles and functional groups, and provides highly functionalized benzoxazoles in modest to good yields. The reaction proceeds in an array of solvents and atmospheric conditions, demonstrating the robustness of this oxidation method and its ability to provide an alternative method for the easy preparation and isolation of these bioactive compounds.
Prediction for CP Violation via Electric Dipole Moment of $τ$ Lepton in ${γγ\to τ^{+}τ^{-}}$ Process at CLIC
Creators: name: Atag, S.
name: Gurkanli, E.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Pair production of tau leptons in two photon collision ${γγ\to τ^{+}τ}^{-}$ is studied at CLIC to test CP violating QED couplings of tau leptons. CP violating effects are investigated using tau pair spin correlations which are observed through the hadronic decay of each $τ$ into $πν$. Competitive bounds with previous works on the electric dipole moment from CP odd terms have been obtained.
description: 16 pages, four figures, two tables
Acid-catalyzed synthesis of 2,3-dihydronaphtho[2,3-b]furan and 3,4-dihydro-2H-benzo[g]chromene derivatives
Creators: name: Le, Thuy Quynh
name: Oh, Chang Ho
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Microbiology
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: 19999 Mathematical Sciences not elsewhere classified
subject: FOS: Mathematics

description: An efficient and facile method for producing 2,3-dihydronaphtho[2,3-b]furan and 3,4-dihydro-2H-benzo[g]chromene has been developed. This methodology utilizes an inexpensive and simple PTSA catalyst for the cyclization reaction of ortho-oxalate-, ortho-keto-, and ortho-formyl arylacetylenols to produce the corresponding products in high yield. This procedure was also successfully applied to the large-scale synthesis of the naphthofuran skeleton, which can be found in various natural products and pharmaceuticals.
The role of exchangeability in causal inference
Creators: name: Saarela, Olli
name: Stephens, David A.
name: Moodie, Erica E. M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Methodology (stat.ME)
subject: Statistics Theory (math.ST)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Though the notion of exchangeability has been discussed in the causal inference literature under various guises, it has rarely taken its original meaning as a symmetry property of probability distributions. As this property is a standard component of Bayesian inference, we argue that in Bayesian causal inference it is natural to link the causal model, including the notion of confounding and definition of causal contrasts of interest, to the concept of exchangeability. Here we propose a probabilistic between-group exchangeability property as an identifying condition for causal effects, relate it to alternative conditions for unconfounded inferences (commonly stated using potential outcomes) and define causal contrasts in the presence of exchangeability in terms of posterior predictive expectations for further exchangeable units. While our main focus is on a point treatment setting, we also investigate how this reasoning carries over to longitudinal settings.
title: Updates in MRI characterization of the thymus in myasthenic patients
Creators: name: Popa, Gelu
Publisher: name: European Congress of Radiology
Year: 2012
Subjects: subject: Thorax
subject: MR
subject: Diagnostic procedure
subject: Tissue characterisation

description: Purpose Methods and Materials Results Conclusion References Personal Information
description: Purpose: - The aim of this prospective study is to assess the importance of MRI examination in characterizing thymic lodge in myasthenic patients, especially for differentiating thymic hyperplasia from tumors of the thymus gland, considering that...
Bayesian non-parametric ordinal regression under a monotonicity constraint
Creators: name: Saarela, Olli
name: Rohrbeck, Christian
name: Arjas, Elja
Publisher: name: arXiv
Year: 2020
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: Compared to the nominal scale, the ordinal scale for a categorical outcome variable has the property of making a monotonicity assumption for the covariate effects meaningful. This assumption is encoded in the commonly used proportional odds model, but there it is combined with other parametric assumptions such as linearity and additivity. Herein, the considered models are non-parametric and the only condition imposed is that the effects of the covariates on the outcome categories are stochastically monotone according to the ordinal scale. We are not aware of the existence of other comparable multivariable models that would be suitable for inference purposes. We generalize our previously proposed Bayesian monotonic multivariable regression model to ordinal outcomes, and propose an estimation procedure based on reversible jump Markov chain Monte Carlo. The model is based on a marked point process construction, which allows it to approximate arbitrary monotonic regression function shapes, and has a built-in covariate selection property. We study the performance of the proposed approach through extensive simulation studies, and demonstrate its practical application in two real data examples.
Structural hybrids of sulfonamide and thiazole moieties: Synthesis and evaluation of antimicrobial activity
Creators: name: Abbas, Samir Y.
name: El-Aziz, Maha M. Abd
name: Awad, Samir M.
name: Mohamed, Mosaad S.
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: 60506 Virology

description: For the discovery of new antimicrobial drugs, new derivatives of sulfonamide having thiazole ring were synthesized. The new series of sulfonamide derivatives were synthesized starting from 4-(arylsulfonamido)-acetophenone thiosemicarbazones 2a–f. Cyclization of thiosemicarbazone derivatives 2a–f by using ethyl chloroacetate and chloroacetone gave the thiazolidin-4-ones 3a–f and 4-methylthiazoles 4a–e, respectively. The antimicrobial properties of the synthesized compounds were investigated. The major thiosemicarbazone and thiazole derivatives gave no effect on most of the tested microorganisms. Incorporation phenyl group at both of the N-4 of thiosemicarbazones and the sulfonamide as in compound 2f gave moderate effects against most of the screened Gram-positive bacteria.
title: Coronary characterization in chronic total occlusion with 256 slice scanner
Creators: name: Belgrano, Manuel
Publisher: name: European Congress of Radiology
Year: 2012
Subjects: subject: Cardiac
subject: CT-Angiography
subject: Angioplasty
subject: Arteriosclerosis

description: Purpose Methods and Materials Results Conclusion References Personal Information
description: Purpose: Coronary artery disease presents at angiography at least one occluded artery in 30-40% procedures and this is a major factor for directing patient to surgical revascularization. Treatment of chronic total occlusion (CTO) lesions still represent a...
Promotion and cyclic sieving on families of SSYT
Creators: name: Alexandersson, Per
name: Oğuz, Ezgi Kantarci
name: Linusson, Svante
Publisher: name: arXiv
Year: 2020
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: We examine a few families of semistandard Young tableaux, for which we observe the cyclic sieving phenomenon under promotion. The first family we consider consists of stretched hook shapes, where we use the cocharge generating polynomial as CSP-polynomial. The second family we consider consists of skew shapes, consisting of rectangles. Again, the charge generating polynomial together with promotion exhibits the cyclic sieving phenomenon. This generalizes earlier result by B. Rhoades and later B. Fontaine and J. Kamnitzer. Finally, we consider certain skew ribbons, where promotion behaves in a predictable manner. This result is stated in form of a bicyclic sieving phenomenon. One of the tools we use is a novel method for computing charge of skew semistandard tableaux, in the case when every number in the tableau occur with the same frequency.