cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Unmet Reproductive Health Care Needs and Occurrence of Unintended Pregnancy among HIV Positive Women in Antiretroviral Treatment Units in Addis Ababa, Ethiopia
Creators: name: Zewdu, Girum
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2011

description: Back ground: Reproductive health issues appear to be relatively neglected among HIV positive women. Hence the contribution of contraception as a strategy to reduce mother-to-child transmission is underutilized. As well, there are few incites and substantive data on the magnitude of unmet reproductive health care needs and occurrence of unintended pregnancy among HIV positive women is not available in Ethiopia (Addis Ababa). Objective of the study: This study assessed unmet reproductive health care needs and occurrence of unintended pregnancy among HIV positive women enrolled in the ART units. Methodology: The study was undertaken from December 2010 to Feburary2011 using quantitative cross sectional facility based study supplemented by qualitative in-depth interview on a sample of 548 HIV positive women in the ART follow up units in Addis Ababa. A systematic random sampling procedure was applied to select study participants. A pretested structured questioner was used to collect data and the data was analyzed using SPSS version 11. Result: Unmet need for contraception in the study was 31%: 25% for spacing and 6% for limiting. Generally, HIV positive women who had a higher chance of unmet need for contraception were those with sero discordant partner (adjusted OR: 2.4, 95%CI: 1.04-5.64) and women who had faced unintended pregnancy after being HIV positive (adjusted OR: 10.12, 95%CI: 4.6-22.3). Whereas, women with recent CD4 count >200 were less likely to have unmet need for contraception than CD4 count of ≤ 200 (adjusted OR: 0.257, 95% CI: 0.09-0.70). The proportion of unintended pregnancies among the total pregnancies during the post HIV diagnosis period were 147 (46%); of which 125 (38%) mistimed and 22 (8%) unwanted. In a multivariate analysis, HIV positive women who have unmet contraceptive (adjusted OR: 14.9, 95%CI: 4.8-46) and those who had ever used emergency contraception (adjusted OR: 4.1, 95%CI: 2-9.2) were having a significantly higher chance of experiencing unintended pregnancy. 11% of the women had ever discussed emergency contraception and discussion of safe termination of pregnancy was (8%) with the provider while contraception and condom were most discussed with the provider as reported by 78% of the respondents. Unmet need for safe termination of pregnancy was 37%. Conclusion: Unmet contraceptive need and of reproductive counseling and safe termination of pregnancy were high among HIV positive women in the ART units. As a major manifestation of these, occurrence of unintended pregnancy was significantly higher among HIV positive women in the ART care units in Addis Ababa; which has implications for vertical HIV transmition. These indicating the need to sought new strategies to address reproductive health care services and hence to satisfy reproductive health care needs of HIV positive woman.
Joseph B. Clearihue - Scrapbook 01
Creators: name: :Unav
Publisher: name: University of Victoria Libraries
Year: 2022
Subjects: subject: Universities and colleges
valueUri: http://id.worldcat.org/fast/1161597
subject: Soldiers
valueUri: http://id.worldcat.org/fast/1125233
subject: Associations, institutions, etc.
valueUri: http://id.worldcat.org/fast/819166
subject: Clearihue, J. B. (Joseph Badenoch), 1887-1976
valueUri: http://id.worldcat.org/fast/2011150
subject: World War (1914-1918)
valueUri: http://id.worldcat.org/fast/1180746
subject: Lawyers
valueUri: http://id.worldcat.org/fast/994346
subject: Dinners and dining
valueUri: http://id.worldcat.org/fast/893952
subject: Special events
valueUri: http://id.worldcat.org/fast/1128924

description: A scrapbook containing newspaper articles, programs, and other printed ephembera showcasing the life and work of Joseph B. Clearihue. Biography: Joseph Badenoch Clearihue was born in Victoria and attended Boys' Central School and Victoria High School before enrolling at Victoria College (graduated in 1903), McGill University and Oxford University. He enjoyed a long career as a student, a soldier in the Fifth Canadian Field Artillery Unit in World War I, a Liberal MLA and Victoria alderman, and as a lawyer before being appointed a county court judge in 1952. He was Chair of the Victoria College Council (1947-63), and guided the College to university status. In January 1962, Clearihue turned the first sod at the construction site of the Clearihue Building, which was the first building on the Gordon head campus. Clearihue was also the first Chancellor of the University of Victoria, and Chair of the Board of Governors (1963-66).
The Evolution and Fate of Super-Chandrasekhar Mass White Dwarf Merger Remnants
Creators: name: Schwab, Josiah
name: Quataert, Eliot
name: Kasen, Daniel
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present stellar evolution calculations of the remnant of the merger of two carbon-oxygen white dwarfs (CO WDs). We focus on cases that have a total mass in excess of the Chandrasekhar mass. After the merger, the remnant manifests as an $L \sim 3 \times 10^4 L_\odot$ source for $\sim 10^4$ yr. A dusty wind may develop, leading these sources to be self-obscured and to appear similar to extreme AGB stars. Roughly $\sim 10$ such objects should exist in the Milky Way and M31 at any time. As found in previous work, off-center carbon fusion is ignited within the merger remnant and propagates inward via a carbon flame, converting the WD to an oxygen-neon (ONe) composition. By following the evolution for longer than previous calculations, we demonstrate that after carbon-burning reaches the center, neutrino-cooled Kelvin-Helmholtz contraction leads to off-center neon ignition in remnants with masses $\ge 1.35 M_\odot$. The resulting neon-oxygen flame converts the core to a silicon WD. Thus, super-Chandrasekhar WD merger remnants do not undergo electron-capture induced collapse as traditionally assumed. Instead, if the remnant mass remains above the Chandrasekhar mass, we expect that it will form a low-mass iron core and collapse to form a neutron star. Remnants that lose sufficient mass will end up as massive, isolated ONe or Si WDs.
description: 17 pages, 17 figures, 1 table; accepted to MNRAS
Partial regularity of Leray-Hopf weak solutions to the incompressible Navier-Stokes equations with hyperdissipation
Creators: name: Ożański, Wojciech S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We show that if $u$ is a Leray-Hopf weak solution to the incompressible Navier--Stokes equations with hyperdissipation $α\in (1,5/4)$ then there exists a set $S\subset \mathbb{R}^3$ such that $u$ remains bounded outside of $S$ at each blow-up time, the Hausdorff dimension of $S$ is bounded above by $ 5-4α$ and its box-counting dimension is bounded by $(-16α^2 + 16α+5)/3$. Our approach is inspired by the ideas of Katz & Pavlović (Geom. Funct. Anal., 2002).
description: 37 pages, 3 figures
Studies on vesicular-arbuscular mycorrhizas of some Australian heathland plants
Creators: name: Sward., Robert Jeffrey
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Physical properties of molecular clouds for the entire Milky Way disk
Creators: name: Miville-Deschênes, Marc-Antoine
name: Murray, Norman
name: Lee, Eve J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: This study presents a catalog of 8107 molecular clouds that covers the entire Galactic plane and includes 98% of the $^{12}$CO emission observed within $b\pm5^\circ$. The catalog was produced using a hierarchical cluster identification method applied to the result of a Gaussian decomposition of the Dame et al. data. The total H$_2$ mass in the catalog is $1.2\times10^9 M_\odot$, in agreement with previous estimates. We find that 30% of the sight lines intersect only a single cloud, with another 25% intersecting only two clouds. The most probable cloud size is $R\sim30$ pc. We find that $M\propto R^{2.2\pm0.2}$, with no correlation between the cloud surface density, $Σ$, and $R$. In contrast with the general idea, we find a rather large range of values of $Σ$, from 2 to $300 M_\odot$ pc$^{-2}$, and a systematic decrease with increasing Galactic radius, $R_{\rm gal}$. The cloud velocity dispersion and the normalization $σ_0=σ_v/R^{1/2}$ both decrease systematically with $R_{\rm gal}$. When studied over the whole Galactic disk, there is a large dispersion in the line width-size relation, and a significantly better correlation between $σ_v$ and $Σ\,R$. The normalization of this correlation is constant to better than a factor of two for $R_{\rm gal}<20$ kpc. This relation is used to disentangle the ambiguity between near and far kinematic distances. We report a strong variation of the turbulent energy injection rate. In the outer Galaxy it may be maintained by accretion through the disk and/or onto the clouds, but neither source can drive the 100 times higher cloud-averaged injection rate in the inner Galaxy.
description: 31 pages, accepted by ApJ
Factors Influencing Tetanus toxoid Immunization and Protection at Birth Coverage among Child Breang Age Women of Ambo Town and its Surrounding Area, Oromia Regional State, Ethiopia
Creators: name: Adugna, Edossa
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2011

description: Introduction: globally maternal and neonatal tetanus persist as public health problems in 46 countries, mainly in Africa and Asia. Neonatal tetanus is responsible for 14% of neonatal death and maternal tetanus is responsible at least for 5% of maternal Deaths. TT2+ coverage among pregnant mothers had stand still at between 30-40% in most African countries. In Ethiopia only 32% of the pregnant mothers have received TT2+ in 2006. West Shoa Zone is one of the nine high risk zones of the country with low TT coverage. Objective: To assess factors influence the utilization of Tetanus toxoid immunization and Protection at birth in study area. Methods: A community based cross-sectional study was conducted from Dec. to May 2011 on mothers aged 15-49 years who have at least one Under five years old Child. A multi stage sampling technique was used to select the sample of 680 women. Data was collected through structured pre tested and semi structured questionnaire and check lists. Data were entered and analyzed in SPSS version 15 soft ware. A univiriate, biviriate and multivariate analysis were done using frequency, percentages, and binary logistic regressions respectively. Results- A study showed that from a total of child breang age women in the study area only 32% of mother immunized for valid Tetanus toxoid dose and only 28 % of children were protected at birth against neonatal tetanus as evidenced by card alone. Bivariant and multivariate analysis showed significant association between Valid TT dose immunization and maternal education, income, marital status, planned pregnancies, husband literacy status. Conclusion, there is low Tetanus toxoid immunization and protected at birth in the area. Demographic and socio cultural factors were found to be barriers to utilization of tetanus toxoid immunization services. Integrating maternal health services and promotion of information, education and communication in the community are recommended.
Fused braids and centralisers of tensor representations of $U_q(gl_N)$
Creators: name: Crampe, N.
name: d'Andecy, L. Poulain
Publisher: name: arXiv
Year: 2020
Subjects: subject: Representation Theory (math.RT)
subject: Mathematical Physics (math-ph)
subject: Geometric Topology (math.GT)
subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We present in this paper the algebra of fused permutations and its deformation the fused Hecke algebra. The first one is defined on a set of combinatorial objects that we call fused permutations, and its deformation is defined on a set of topological objects that we call fused braids. We use these algebras to prove a Schur--Weyl duality theorem for any tensor products of any symmetrised powers of the natural representation of $U_q(gl_N)$. Then we proceed to the study of the fused Hecke algebras and in particular, we describe explicitely the irreducible representations and the branching rules. Finally, we aim to an algebraic description of the centralisers of the tensor products of $U_q(gl_N)$-representations under consideration. We exhibit a simple explicit element that we conjecture to generate the kernel from the fused Hecke algebra to the centraliser. We prove this conjecture in some cases and in particular, we obtain a description of the centraliser of any tensor products of any finite-dimensional representations of $U_q(sl_2)$.
description: 52 pages
Studies on desiccation tolerant grasses
Creators: name: Sutaryono., Yusuf Akhyar
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Electronic transport and magnetism in the alternating stack of metallic and highly frustrated magnetic layers in Co$_{1/3}$NbS$_2$
Creators: name: Popčević, Petar
name: Batistić, Ivo
name: Smontara, Ana
name: Velebit, Kristijan
name: Jaćimović, Jaćim
name: Živković, Ivica
name: Tsyrulin, Nikolay
name: Piatek, Julian
name: Berger, Helmuth
name: Sidorenko, Andrey A.
name: Rønnow, Henrik M.
name: Forró, László
name: Barišić, Neven
name: Tutiš, Eduard
Publisher: name: arXiv
Year: 2020
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Transition-metal dichalcogenides (TMDs) are layered compounds that support many electronic phases, including various charge density waves, superconducting, and Mott insulating states. Their intercalation with magnetic ions introduces magnetic sublayers, which strongly influence the coupling between host layers, and feature various magnetic states adjustable by external means. Co$_{1/3}$NbS$_2$ hosts a particularly sensitive magnetic subsystem with the lowest magnetic ordering temperature in the family of magnetically intercalated TMDs, and the only one where the complete suppression of magnetic order under pressure has been recently suggested. By combining the results of several experimental methods, electronic ab initio calculations, and modeling, we develop insights into the mechanisms of electric transport, magnetic ordering, and their interaction in this compound. The elastic neutron scattering is used to directly follow the evolution of the antiferromagnetic order parameter with pressure and temperature. Our results unambiguously disclose the complete suppression of the observed magnetic order around 1.7 GPa. We delve into possible mechanisms of magnetic order suppression under pressure, highlighting the role of magnetic frustrations indicated by magnetic susceptibility measurements and ab-initio calculations. Electronic conduction anisotropy is measured in the wide temperature and pressure range. Here we show that the transport in directions along and perpendicular to layers respond differently to the appearance of magnetic ordering or the application of the hydrostatic pressure. We propose the 'spin-valve' mechanism where the intercalated Co ions act as spin-selective electrical transport bridges between host layers. The mechanism applies to various magnetic states and can be extended to other magnetically intercalated TMDs.
description: 36 pages, 19 figures
Focussing computed tomography scanner
Creators: name: Suparta., Gede Bayu
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Testing chemical carcinogenicity by using a transcriptomics HepaRG-based model?
Creators: name: Doktorova, Tatyana Y.
name: Yildirimman, Reha
name: Ceelen, Liesbeth
name: Vilardell, Mireia
name: Vanhaecke, Tamara
name: Vinken, Mathieu
name: Ates, Gamze
name: Heymans, Anja
name: Gmuender, Hans
name: Bort, Roque
name: Corvi, Raffaella
name: Phrakonkham, Pascal
name: Li, Ruoya
name: Mouchet, Nicolas
name: Chesne, Christophe
name: Van Delft, Joost
name: Kleinjans, Jos
name: Castell, Jose
name: Herwig, Ralf
name: Rogiers, Vera
Publisher: name: Technische Universität Dortmund
Year: 2014
Subjects: subject: genotoxic carcinogens
subject: non-genotoxic carcinogens
subject: gene expression profiling
subject: pathways-based analysis
subject: HepaRG cell line
subject: liver-based in vitro models
subject: 610

description: The EU FP6 project carcinoGENOMICS explored the combination of toxicogenomics and in vitro cell culture models for identifying organotypical genotoxic- and non-genotoxic carcinogen-specific gene signatures. Here the performance of its gene classifier, derived from exposure of metabolically competent human HepaRG cells to prototypical non-carcinogens (10 compounds) and hepatocarcinogens (20 compounds), is reported. Analysis of the data at the gene and the pathway level by using independent biostatistical approaches showed a distinct separation of genotoxic from non-genotoxic hepatocarcinogens and non-carcinogens (up to 88 % correct prediction). The most characteristic pathway responding to genotoxic exposure was DNA damage. Interlaboratory reproducibility was assessed by blindly testing of three compounds, from the set of 30 compounds, by three independent laboratories. Subsequent classification of these compounds resulted in correct prediction of the genotoxicants. As expected, results on the non-genotoxic carcinogens and the non-carcinogens were less predictive. In conclusion, the combination of transcriptomics with the HepaRG in vitro cell model provides a potential weight of evidence approach for the evaluation of the genotoxic potential of chemical substances.
description: EXCLI Journal ; Vol. 13, 2014
Fubini instantons in Dilatonic Einstein-Gauss-Bonnet theory of gravitation
Creators: name: Ro, Daeho
name: Lee, Wonwoo
name: Lee, Bum-Hoon
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We investigate various types of Fubini instantons in Dilatonic Einstein-Gauss-Bonnet theory of gravitation, which describe the decay of the vacuum state at a hilltop potential through the tunneling without a barrier. It is shown that the vacuum states are modified by the non-minimally coupled higher-curvature term. Accordingly, we present the new type of solutions describing the tunneling from new vacuum states in anti-de Sitter and de Sitter backgrounds. The decay probabilities of vacuum states are also influenced. Consequently, we show that the semiclassical exponents can be decreased for specific parameter ranges, which make the tunneling probabilities enhanced.
description: 9 pages, 9 figures, Typo corrections, Reference added, Published version
Probing the Radio Loud/Quiet AGN dichotomy with quasar clustering
Creators: name: Retana-Montenegro, E.
name: Röttgering, H. J. A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We investigate the clustering properties of 45441 radio-quiet quasars (RQQs) and 3493 radio-loud quasars (RLQs) drawn from a joint use of the Sloan Digital Sky Survey (SDSS) and Faint Images of the Radio Sky at 20 cm (FIRST) surveys in the range $0.3
description: 15 pages, 13 figures, A&A in press
Correlations of zero-entropy critical states in the XXZ model: integrability and Luttinger theory far from the ground state
Creators: name: Vlijm, R.
name: Eliëns, I. S.
name: Caux, J. -S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Pumping a finite energy density into a quantum system typically leads to `melted' states characterized by exponentially-decaying correlations, as is the case for finite-temperature equilibrium situations. An important exception to this rule are states which, while being at high energy, maintain a low entropy. Such states can interestingly still display features of quantum criticality, especially in one dimension. Here, we consider high-energy states in anisotropic Heisenberg quantum spin chains obtained by splitting the ground state's magnon Fermi sea into separate pieces. Using methods based on integrability, we provide a detailed study of static and dynamical spin-spin correlations. These carry distinctive signatures of the Fermi sea splittings, which would be observable in eventual experimental realizations. Going further, we employ a multi-component Tomonaga-Luttinger model in order to predict the asymptotics of static correlations. For this effective field theory, we fix all universal exponents from energetics, and all non-universal correlation prefactors using finite-size scaling of matrix elements. The correlations obtained directly from integrability and those emerging from the Luttinger field theory description are shown to be in extremely good correspondence, as expected, for the large distance asymptotics, but surprisingly also for the short distance behavior. Finally, we discuss the description of dynamical correlations from a mobile impurity model, and clarify the relation of the effective field theory parameters to the Bethe Ansatz solution.
description: 30 pages, 12 figures; v2: minor revisions; Submitted to SciPost Physics
Baxterisation of the fused Hecke algebra and R-matrices with gl(N)-symmetry
Creators: name: Crampe, N.
name: d'Andecy, L. Poulain
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Algebra (math.QA)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We give an explicit Baxterisation formula for the fused Hecke algebra and its classical limit for the algebra of fused permutations. These algebras replace the Hecke algebra and the symmetric group in the Schur--Weyl duality theorems for the symmetrised powers of the fundamental representation of gl(N) and their quantum version. So the Baxterisation formulas presented in this paper are applicable to the $R$-matrices associated to these representations. In particular all "higher spins" representations of (classical and quantum) sl(2) are covered.
Constraining quantum collapse inflationary models with CMB data
Creators: name: Benetti, Micol
name: Landau, Susana J.
name: Alcaniz, Jailson S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The hypothesis of the self-induced collapse of the inflaton wave function was proposed as responsible for the emergence of inhomogeneity and anisotropy at all scales. This proposal was studied within an almost de Sitter space-time approximation for the background, which led to a perfect scale-invariant power spectrum, and also for a quasi-de Sitter background, which allows to distinguish departures from the standard approach due to the inclusion of the collapse hypothesis. In this work we perform a Bayesian model comparison for two different choices of the self-induced collapse in a full quasi-de Sitter expansion scenario. In particular, we analyze the possibility of detecting the imprint of these collapse schemes at low multipoles of the anisotropy temperature power spectrum of the Cosmic Microwave Background (CMB) using the most recent data provided by the Planck Collaboration. Our results show that one of the two collapse schemes analyzed provides the same Bayesian evidence of the minimal standard cosmological model $Λ$CDM, while the other scenario is weakly disfavoured with respect to the standard cosmology.
description: 15 pages, 8 figures
Assessment of Eating Behaviour In Relation to Body Mass Index of Senior Regular Undergraduate Addis Ababa University Students
Creators: name: Tezera, Tefera
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2015

description: Background: University students generally tend to engage in problematic eating behaviors, including unhealthy dieting, skipping meals, and high intake of fast food that could contribute to negative consequences to their health and nutritional status. Objective: The purpose of this study is to assess eating behavior and Body Mass Index status of Senior Regular Undergraduate students of Addis Ababa University. Methods: Institutional-based cross-sectional study was conducted purposively among selected Campuses. The study population is all regular senior Undergraduate Addis Ababa University of Main Campus, Technology and Science faculty students. The total sample size for the study was estimated single proportion population formula. Data was collected from 774 participants using structured questionnaire, weight and height measurements. EPI-info version 3.5.3 was used to enter and clean the data and SPPS version 20.0 was employed for analysis. Logistic regression and odds ratio was calculated to ascertain association between dependent and independent variable. The result was present in tables, graphs and charts. Result: A total of 757 study respondents participated, of which 550(72.7%) were males. This study showed that the majority of the students 465(61.4%) had normal weight of which 341(73.3%) were males and 124(26.7%) were females. The prevalence of underweight and overweight were 260(34.3%) and 28(3.7%) respectively. The odds of having overweight among none-cafeteria users was two point eight(2.8) times higher than University cafeteria users [AOR=2.844 CI(1.025,7.891)]. Intake of snack apart from regular meals, colored vegetables and fruits was not a common among respondents. Conclusion: This study high lights the presence of unhealthy eating behaviors and a high prevalence of underweight among university students. Therefore, promoting healthy eating behavior among young adults is a crucial to achieve a healthy nutritional status
Self-consistent Keldysh approach to quenches in weakly interacting Bose-Hubbard model
Creators: name: Gullo, N. Lo
name: Dell'Anna, L.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We present a non-equilibrium Green's functional approach to study the dynamics following a quench in weakly interacting Bose Hubbard model (BHM). The technique is based on the self-consistent solution of a set of equations which represents a particular case of the most general set of Hedin's equations for the interacting single-particle Green's function. We use the ladder approximation as a skeleton diagram for the two-particle scattering amplitude useful, through the self-energy in the Dyson equation, for finding the interacting single-particle Green's function. This scheme is then implemented numerically by a parallelized code. We exploit this approach to study the correlation propagation after a quench in the interaction parameter, for one (1D) and two (2D) dimensions. In particular, we show how our approach is able to recover the crossover from ballistic to diffusive regime by increasing the boson-boson interaction. Finally we also discuss the role of a thermal initial state on the dynamics both for 1D and 2D Bose Hubbard models, finding that surprisingly at high temperature a ballistic evolution is restored.
description: 13 figures
Preparation and characterisation of novel polymer electrolytes
Creators: name: Sun., Jiazeng
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Evidence for nitrogen gas surface doping of the Bi$_2$Se$_3$ topological insulator
Creators: name: Gottschalk, Michael
name: Lee, Mal-Soon
name: Goodwin, Eric
name: Mikolas, Camille
name: Chasapis, Thomas
name: Chung, Duck Young
name: Kanatzidis, Mercouri
name: Mahanti, S. D.
name: Tessmer, Stuart
Publisher: name: arXiv
Year: 2020
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Using scanning tunneling spectroscopy we have studied the effects of nitrogen gas exposure on the bismuth selenide density of states. We observe a shift in the Dirac point which is qualitatively consistent with theoretical modeling of nitrogen binding to selenium vacancies. In carefully controlled measurements, Bi$_2$Se$_3$ crystals were initially cleaved in a helium gas environment and then exposed to a 22 SCFH flow of ultra-high purity N$_2$ gas. We observe a resulting change in the spectral curves, with the exposure effect saturating after approximately 50 minutes, ultimately bringing the Dirac point about 50 meV closer to the Fermi level. These results are compared to density functional theoretical calculations, which support a picture of $N_2$ molecules physisorbing near Se vacancies and dissociating into individual N atoms which then bind strongly to Se vacancies. In this interpretation, the binding of the N atom to a Se vacancy site removes the surface defect state created by the vacancy and changes the position of the Fermi energy with respect to the Dirac point.
description: 9 pages, 3 figures
Abelian Yang-Baxter Deformations and TsT transformations
Creators: name: Osten, David
name: van Tongeren, Stijn J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We prove that abelian Yang-Baxter deformations of superstring coset sigma models are equivalent to sequences of commuting TsT transformations, meaning T dualities and coordinate shifts. Our results extend also to fermionic deformations and fermionic T duality, and naturally lead to a TsT subgroup of the superduality group OSp(d_b,d_b|2d_f). In cases like AdS_5 x S^5, fermionic deformations necessarily lead to complex models. As an illustration of inequivalent deformations, we give all six abelian deformations of AdS_3. We comment on the possible dual field theory interpretation of these (super-)TsT models.
description: v1, 22 pages
On regularity properties of a surface growth model
Creators: name: Burczak, Jan
name: Ożański, Wojciech S.
name: Seregin, Gregory
Publisher: name: arXiv
Year: 2020
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35Q30, 76D03, 76D05, 35K25, 35K55, 35Q35

description: We show local higher integrability of derivative of a suitable weak solution to the surface growth model, provided a scale-invariant quantity is locally bounded. If additionally our scale-invariant quantity is small, we prove local smoothness of solutions.
description: 18 pages
The Journey of an Exchange Traded Fund: Becoming a Unicorn or Zombie
Creators: name: Li, Bingqiao
name: Gao, Fei- (Phoebe)
Publisher: name: Singapore Institute of Technology
Year: 2023

description: The authors examine the factors that impact the growth of exchange traded funds (ETFs) from 1990 to 2020. The authors show the first-mover and winner-takes-all effects from top ETF issuers. Besides the longer history and larger asset under management (AUM), the ETFs being managed by top issuers have exhibited lower risks and higher trading volume. Delisted ETFs on the contrary has a shorter history, lower AUM, higher risks, and lower trading volume. For zombie ETFs, the authors find longer history, lower risks but lower AUM and trading volume, controlled for total expense ratio, return, volatility, Amihud (2002) illiquidity, bid-ask spread, turnover ratio, as well as year, issuer, asset class and region fixed effects. The authors further study the ETFs’ AUM and trading activities over the 2008 Global Financial Crisis (GFC) and COVID-19 pandemic crisis, and find that the GFC has a significant negative impact while the COVID-19 has a positive impact on the ETFs’ popularity. The significant increase in AUM of ETF relative to common stocks during the COVID-19 is associated with retail investors’ holdings, as the authors document a significant reduction of institutional holdings at the aggregate level.
title: Comparing models for variables given on disparate spatial scales
title: an epidemiological example
titleType: AlternativeTitle
Creators: name: Sturtz, Sibylle
Publisher: name: Technische Universität Dortmund
Year: 2008
Subjects: subject: Spatial statistics
subject: Poisson-Gamma model
subject: Childhood leukaemia
subject: 310

description: Die räumliche Epidemiologie beschäftigt sich mit der Beschreibung und der Modellierung der räumlichen Variation von Krankheiten und anderen räumlichen Prozessen. Bekannte Methoden sind das Markov random field (MRF) Modell, das Conditional Auto-Regressive (CAR) Terme verwendet und konjugierte hierarchische Poisson-Gamma Modelle. Häufig werden auch Cluster- Algorithmen verwendet. Bei der Modellierung der Daten wird in diesen Modellen davon ausgegangen, dass Daten und Kovariablen in der selben räumlichen Auflösung vorliegen. Tatsächlich unterscheiden sich die Messskalen in der Regel. Durch die Verwendung von Punktprozessen in Poisson-Gamma random field Modellen, die eine Verallgemeinerung der konjugierten hierarchischen Poisson-Gamma Modelle darstellen, können räumliche Daten in ihrer tatsächlichen räumlichen Auflösung modelliert werden. Zusätzlich ergibt sich die Möglichkeit, Kovariablen als Exzess- oder relative Risikofaktoren einzubeziehen, was eine unterschiedliche Interpretation nach sich zieht. Im Rahmen der Dissertation wird die Klasse der Poisson-Gamma random field Modelle untersucht. Dazu wird eine Simulationsstudie durchgeführt. Das Design der Studie wird so gewählt, dass die Eignung der Modelle für verschiedene räumliche Muster untersucht werden kann. Außerdem werden Kovariablen sowohl als additive Exzess- als auch als multiplikative relative Risikofaktoren einbezogen. Weiterhin werden latente, d.h. nicht beobachtete Risikofaktoren sowohl in der Generation als auch der Modellierung der Daten berücksichtigt. Außer Poisson-Gamma random field Modellen werden auch andere räumliche Modelle wie das MRF-Modell und ein Cluster-Ansatz in den Modellvergleich miteinbezogen. Es zeigt sich, dass Poisson-Gamma random field Modelle gut geeignet sind, die verschiedenen räumlichen Strukturen zu identifizieren. Dabei ist es notwenidig zwischen den möglichen Interpretationen von Kovariablen zu unterscheiden. Die Modellgüten werden mit Hilfe des mittleren quadratischen Fehlers und eines Informationskriteriums, dem sogenannten Deviance Information Criterion, überprüft. Im Rahmen der Dissertation wurden Poisson-Gamma random field Modelle in die Software WinBUGS implementiert. Die mitentwickelten R Packete R2WinBUGS und BRUGS, die die automatisierte Nutzung von WinBUGS erleichtern, werden vorgestellt. Bei der Modellierung der beobachteten Leukämiefälle werden Benzolemissionen sowie ein Deprivationsindex als Kovariablen verwendet. Es zeigt sich, dass mit steigendem Benzollevel das relative Risko, an Benzol zu erkranken steigt. Gleichzeitig steigt das Risiko mit steigendem Wohlstand. Beide Variablen können dabei als relative Risikofaktoren angesehen werden.
Kelvin-Helmholtz instability at proton scales with an exact kinetic equilibrium
Creators: name: Settino, A.
name: Malara, F.
name: Pezzi, O.
name: Onofri, M.
name: Perrone, D.
name: Valentini, F.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: The Kelvin-Helmholtz instability is a ubiquitous physical process in ordinary fluids and plasmas, frequently observed also in space environments. In this paper, kinetic effects at proton scales in the nonlinear and turbulent stage of the Kelvin-Helmholtz instability have been studied in magnetized collisionless plasmas by means of Hybrid Vlasov-Maxwell simulations. The main goal of this work is to point out the back reaction on particles triggered by the evolution of such instability, as energy reaches kinetic scales along the turbulent cascade. Interestingly, turbulence is inhibited when Kelvin-Helmholtz instability develops over an initial state which is not an exact equilibrium state. On the other hand, when an initial equilibrium condition is considered, energy can be efficiently transferred towards short scales, reaches the typical proton wavelengths and drives the dynamics of particles. As a consequence of the interaction of particles with the turbulent fluctuating fields, the proton velocity distribution deviates significantly from the local thermodynamic equilibrium, the degree of deviation increasing with the level of turbulence in the system and being located near regions of strong magnetic stresses. These numerical results support recent space observations from the Magnetospheric MultiScale mission of ion kinetic effects driven by the turbulent dynamics at the Earth's magnetosheath (Perri et al., 2020, JPlPh, 86, 905860108) and by the Kelvin-Helmholtz instability in the Earth's magnetosphere (Sorriso-Valvo et al., 2019, PhRvL, 122, 035102).
description: 14 pages, 11 figures
Classifying maps into uniform tracial sequence algebras
Creators: name: Castillejos, Jorge
name: Evington, Samuel
name: Tikuisis, Aaron
name: White, Stuart
Publisher: name: arXiv
Year: 2020
Subjects: subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: 46L35

description: We classify $^*$-homomorphisms from nuclear $C^*$-algebras into uniform tracial sequence algebras of nuclear $\mathcal Z$-stable $C^*$-algebras via tracial data.
description: Appendix A added, containing a 2 page corrigendum fixing a small error in the proof of Theorem 2.6. The corrigendum will be published as a separate article
Πρόβλεψη διάδρασης χρηστών με ψηφιακές διαφημίσεις με χρήση μεθόδων μηχανικής μάθησης
Creators: name: Παντσιοπούλου, Κυριακή Νικόλας
Publisher: name: Aristotle University of Thessaloniki
Year: 2022
Subjects: Πρόβλεψη
Διαφημίσεις
Μηχανική Μάθηση
Prediction
Advertisements
Machine Learning

description: Η παρούσα διπλωματική εργασία ασχολείται με το πρόβλημα της πρόβλεψης του Click Through Rate σε ψηφιακές διαφημίσεις μέσα από τεχνικές μηχανικές μάθησης. Η προ επεξεργασία του συνόλου δεδομένων, η υλοποίηση, η εκπαίδευση αλλά και η αξιολόγηση των μοντέλων έγινε μέσω της χρήσης της γλώσσας προγραμματισμού Python και των γνωστών βιβλιοθηκών μηχανικής μάθησης και επεξεργασίας δεδομένων που προσφέρει. Επιπρόσθετα πραγματοποιήθηκε οπτικοποίηση των χαρακτηριστικών του συνόλου δεδομένων, υπολογισμός διάφορων σχετικών στατιστικών τους και τέλος έγινε η αξιολόγηση τους και η επιλογή του βέλτιστου μοντέλου.
description: This paper presents the issue with Click Through Rate (CTR) prediction in digital advertisements through machine learning techniques. The programming language Python was used for the data pre-processing, training, implementation and the models’ evaluation as well through its libraries for machine learning and data processing. Visualization of the data set’s features and assessment of their statistics are also presented. In the end takes place the evaluation of the models and the choice for the optimal one.
Regioselective activation of C-X (X=F,Cl,Br,I) bonds induced by organolanthanide complexes
Creators: name: Sun., Jun Hui
Publisher: name: Monash University
Year: 2021

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Semi-device-dependent blind quantum tomography
Creators: name: Roth, Ingo
name: Wilkens, Jadwiga
name: Hangleiter, Dominik
name: Eisert, Jens
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Information Theory (cs.IT)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Extracting tomographic information about quantum states is a crucial task in the quest towards devising high-precision quantum devices. Current schemes typically require measurement devices for tomography that are a priori calibrated to high precision. Ironically, the accuracy of the measurement calibration is fundamentally limited by the accuracy of state preparation, establishing a vicious cycle. Here, we prove that this cycle can be broken and the dependence on the measurement device's calibration significantly relaxed. We show that exploiting the natural low-rank structure of quantum states of interest suffices to arrive at a highly scalable `blind' tomography scheme with a classically efficient post-processing algorithm. We further improve the efficiency of our scheme by making use of the sparse structure of the calibrations. This is achieved by relaxing the blind quantum tomography problem to the de-mixing of a sparse sum of low-rank matrices. We prove that the proposed algorithm recovers a low-rank quantum state and the calibration provided that the measurement model exhibits a restricted isometry property. For generic measurements, we show that it requires a close-to-optimal number of measurement settings. Complementing these conceptual and mathematical insights, we numerically demonstrate that robust blind quantum tomography is possible in a practical setting inspired by an implementation of trapped ions.
description: 30 pages, 9 Figures
Submission of 2013-2014 U.S. fishery statistics for the western and central Pacific Ocean and other areas to the Western and Central Pacific Fisheries Commission.
Creators: name: Pacific Islands Fisheries Science Center (U.S.),
Publisher: name: U.S. Department of Commerce, National Oceanic and Atmospheric Administration, National Marine Fisheries Service, Pacific Islands Fisheries Science Center
Year: 2015
Subjects: subject: Fisheries--Catch effort--Estimates--Pacific Ocean--Statistical methods.
subject: Migratory fishes--Estimates--Pacific Ocean--Statistical methods.

description: This is the eleventh submission of annual U.S. and Territorial fishery statistics by the NOAA's National Marine Fisheries Service (NMFS) to the Western and Central Pacific Fisheries Commission (WCPFC). The submission consists of preliminary 2014 fisheries data for highly migratory species (HMS) in the Pacific Ocean, and updated data for 2013, unless otherwise indicated. Annual catch and effort estimates are included for fisheries of the U.S. and Participating Territories of American Samoa and Guam, as well as the Commonwealth of the Northern Mariana Islands.
Change-point detection in panel data via double CUSUM statistic
Creators: name: Cho, Haeran
Publisher: name: arXiv
Year: 2016
Subjects: subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: In this paper, we consider the problem of (multiple) change-point detection in panel data. We propose the double CUSUM statistic which utilises the cross-sectional change-point structure by examining the cumulative sums of ordered CUSUMs at each point. The efficiency of the proposed change-point test is studied, which is reflected on the rate at which the cross-sectional size of a change is permitted to converge to zero while it is still detectable. Also, the consistency of the proposed change-point detection procedure based on the binary segmentation algorithm, is established in terms of both the total number and locations (in time) of the estimated change-points. Motivated by the representation properties of the Generalised Dynamic Factor Model, we propose a bootstrap procedure for test criterion selection, which accounts for both cross-sectional and within-series correlations in high-dimensional data. The empirical performance of the double CUSUM statistics, equipped with the proposed bootstrap scheme, is investigated in a comparative simulation study with the state-of-the-art. As an application, we analyse the log returns of S&P 100 component stock prices over a period of one year.
Outgoing and potential trends of composition, health benefits, juice production and waste management of the multi-faceted Grapefruit Citrus Χ paradisi: A comprehensive review for maximizing its value
Creators: name: Khalil, Mohammed N. A.
name: Farghal, Hebatullah H.
name: Farag, Mohamed A.
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Neuroscience
subject: Pharmacology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Inorganic Chemistry
subject: Science Policy
subject: Plant Biology

description: Grapefruit (GF) Citrus Χ paradisi Macfad (F. Rutaceae) is one of the major citrus fruits that encompass a myriad of bioactive chemicals and most unique among citrus fruits. Nevertheless, no study has yet to assess comprehensively its multitudinous constituents, health benefits, and valuable waste products. Hereto, the present review provides an updated comprehensive review on the different aspects of GF, its juice production, waste valorization, enhancement of its byproducts quality, and compared to other citrus fruits. Grapefruit uniqueness among other citrus fruits stands from its unique taste, flavor, and underlying complex chemical composition. Despite limonene abundance in peel oil and grapefruit juice (GFJ) aroma, nootkatone and sulfur compounds are the key determinants of its flavor, whereas flavanones contribute to its bitter taste and in conjunction with limonoids. Different postharvest treatments and juice processing are reviewed and in context to its influence on final product quality and or biological effects. Flavanones, furanocoumarins, and limonoids appear as the most prominent in GF drug interactions affecting its metabolism and or excretion. Valorization of GF peel is overviewed for its utilization as biosrobent, its oil in aromatherapy, limonene as antimicrobial or in cosmetics, fruit pectin for bioethanol production, or as biosorbent, and peel phenolics biotransformation. The present review capitalizes on all of the aforementioned aspects in GF and further explore novel aspects of its juice quality presenting the full potential of this valued multi-faceted citrus fruit.
A study in the theory of transformation semi-groups
Creators: name: Sullivan., R. P.
Publisher: name: Monash University
Year: 2021

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