cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Economic Costs of Podoconiosis in Wolaita Zone, Southern Ethiopia
Creators: name: Tekola, Fasil
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2005

description: Podoconiosis is endemic non-filarial elephantiasis mostly affecting barefootedrural farmers in countries of tropical Africa, Central and South America, North India, Cameroon and Sri Lanka. In Ethiopia the condition is more prevalent than any other African country. In areas of red clay soil the disease is common mainly in the economically active age group. Even so, little attention has been given to it and there have not been any studies on the economic burden of podoconiosis. The overall objective of this study was to estimate podoconiosis-related direct and productivity costs in Wolaitta zone, SNNPR, Ethiopia. The study was undertaken in Wolaitta zone, SNNPR, using quantitative matched comparative cross-sectional study complemented by qualitative key informants' interview on 702 study subjects. Cost estimation was based on the societal perspective for cost analysis, the human capital approach to estimate productivity losses and the prevalence-based model as a time frame. Data were entered into EPI-INFO V.6 and exported to SPSS V.11 for matched pair analysis. The opportunity cost of time lost by patients and care-takers accounted for the major component (72.1%) of patient-side cost. The average patient-side cost was 97.6 Birr (US$ 11.35) per patient. The actual out-of-pocket expenses over the three months period form 6% of the overall quarterly expenditure of households ix of the studied patients per annum. When projected over one year, the total direct costs amount to 1233.40 Birr (US$ 143.42) per patient. It was also found that most patients did not completely stop work, but spent only 3.56 ± 2.87 hours per day on economic activity compared to 6.52±2.53 hours worked by controls (p<0.001). Female patients spent 3.45 hours less on domestic activity compared to their matched controls (p<0.001). The total productivity cost comes to 538.86 Birr (US$ 62.658) per patient per year. Regression analyses revealed that total absenteeism and total working hours spent on economic activity were significantly influenced by the presence of the disease and by sex. The presence of the disease and household expenditure significantly influenced total absenteeism from domestic work. In addition, the presence of disease, marital status and 'kebele' type significantly determined the number of hours spent on domestic work. Based on the results, some recommendations were forwarded.
QCD radiative corrections for $h\to b\bar b$ in the Standard Model Dimension-6 EFT
Creators: name: Gauld, Rhorry
name: Pecjak, Benjamin D.
name: Scott, Darren J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We calculate the $\mathcal{O}(α_s)$ QCD corrections to the inclusive $h\to b\bar b$ decay rate in the dimension-6 Standard Model Effective Field Theory (SMEFT). The QCD corrections multiplying the dimension-6 Wilson coefficients which alter the $hb\bar b$-vertex at tree-level are proportional to the Standard Model (SM) ones, so next-to-leading order results can be obtained through a simple rescaling of the tree-level decay rate. On the other hand, contributions from the operators $Q_{bG}$ and $Q_{HG}$, which alter the $gb\bar b$-vertex and introduce a $hgg$-vertex respectively, enter at $\mathcal{O}(α_s)$ and induce sizeable corrections which are unrelated to the SM ones and cannot be anticipated through a renormalisation-group analysis. We present compact analytic results for these contributions, which we recommend to be included in future phenomenological studies.
description: 10 pages, 1 figure. Matches journal version and includes updated references
What Drives Mass Polarization in the United States?
Creators: name: Hull, Gary
Publisher: name: University of Chicago
Year: 2022
Subjects: subject: Political Polarization
subject: Ideological Polarization
subject: Party Sorting
subject: Affective Polarization
subject: Mass Polarization
subject: Partisanship

description: Academic studies on political polarization in the American public have coalesced into three fundamentally related yet distinct bodies of literature on ideological, partisan, and affective polarization. While each of these areas have contributed to a greater understanding of what divides the American polity, they have largely developed as separate lines of research and interact less than might be expected given their shared central questions of political behavior and public opinion. This thesis unites these major dimensions, aiming to assemble a more complete illustration of the central driving influences of polarization in the American public. Following an analysis of scholarly literature ranging from foundational to the most recent contributions, I draw upon a single, large-scale dataset (ANES) to directly evaluate the evidence of mass polarization over several decades, highlighting the recent accelerated change in some of these measures. However, this work is cautious to not overstate the current political cleavage in the U.S., noting how misperceptions and overestimations of the state of mass polarization may contribute to its exacerbation.
The lichen genus cladia nyl
Creators: name: Filson, Rex B.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Assessment of magnitude and factors associated with unmet need for family planning among married women of reproductive age who are in extended postpartum in Tahtay Koraro Woreda, Tigray regional state, Ethiopia
Creators: name: Embafrash, Gurja
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2004

description: Background: About 222 million women in developing countries had unmet need of contraception. Women in their first year after childbirth had the largest proportion of unmet need for contraception. This first year after delivery is described as an extended postpartum period. Objective: To determine the magnitude and factors associated with unmet need among women who are in extended postpartum in Tahtay Koraro Woreda, Tigray regional state, Ethiopia. Methods: A cross sectional facility based study complemented by in-depth interview of key informant was implemented. A total of 409 Women in the 1st year after delivery were recruited. The study period was from 1st February to March 30, 2014. For quantitative data Epi-Info version 3.5.4 software was used for data entry, and then data exported to SPSS Version 21 software for further analysis. Logistic regression model was used to identify factors associated with the outcome variable. The transcribed and translated qualitative text data were imported into an Open Code program and coded. Then codes were categorized and thematically described. Results: The overall unmet need for family planning was 150 (36.7%), with 121 (29.6%) for spacing and 29 (7.1%) for limiting. One hundred twenty (29.3%) women were using family planning. And 84 (70%) of them were using injectable. The commonest reasons for non-use of FP were non-menstruating since last birth 201 (69.6%), side effects 39 (13.5%) and infrequent sex 22 (7.6%). Rural residence (AOR=7.16, 95% CI 2.57-19.95), postpartum week (38-52 week; AOR=8.71, 95% CI 3.90-19.44) and low perceived risk of pregnancy (AOR=1.79, 95% CI 1.04-3.09) were significantly associated with high unmet need. Opposition from different groups of the community, low perceived risk of pregnancy, provider refusal of removal of implants and misunderstanding of FP use and side effects were additional triggering factors for unmet need. Conclusion and Recommendation: The unmet need for family planning was high. Rural residence, increased maternal postpartum week and low perceived risk of pregnancy were associated with high unmet need. Opposition from different groups of the community and refusal of implant removal were also other factors affecting unmet need. Empowering women with knowledge of the risk of pregnancy and FP use during extended postpartum period should be enhanced. Further awareness creation should be extended to periphery at different levels of the community.
Multifractal Solar EUV Intensity Fluctuations and their Implications for Coronal Heating Models
Creators: name: Cadavid, Ana Cristina
name: Rivera, Yeimy J.
name: Lawrence, John K.
name: Christian, Damian J.
name: Jennings, Peter J.
name: Rappazzo, A. Franco
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We investigate the scaling properties of the long-range temporal evolution and intermittency of SDO/AIA intensity observations in four solar environments: an active region core, a weak emission region, and two core loops. We use two approaches: the probability distribution function (PDF) of time series increments, and multifractal detrended fluctuation analysis (MF-DFA). Noise taints the results, so we focus on the 171 Angstrom waveband , which has the highest signal-to-noise ratio. The lags between pairs of wavebands distinguish between coronal versus transition region (TR) emission. In all physical regions studied, scaling in the range 15-45 min is multifractal, and the time series are anti-persistent on the average. The degree of anti-correlation in the TR time series is greater than for coronal emission. The multifractality stems from long term correlations in the data rather than the wide distribution of intensities. Observations in the 335 Angstrom waveband can be described in terms of a multifractal with added noise. The multiscaling of the EUV data agrees qualitatively with the radiance from a phenomenological model of impulsive bursts plus noise, and also from ohmic dissipation in a reduced magnetohydrodynamics (RMHD) model for coronal loop heating. The parameter space must be further explored to seek quantitative agreement. Thus, the observational signatures obtained by the combined tests of the PDF of increments and the MF-DFA offer strong constraints which can systematically discriminate among models for coronal heating.
description: 31 pages, 11 figures
MPEC 2023-S118 : 2015 SD
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Die Wes-Kaaplandse Instituut vir Historiese Navorsing (Hrg.): Das Tagebuch und die Briefe von Georg Schmidt (1737-1744)
Creators: name: Krüger, Bernhard
Publisher: name: Unitas Fratrum
Year: 1970

description: Unitas Fratrum, Bd. 14 (1983): Unitas Fratrum, Band 14
Experiences and Coping Strategies During the COVID-19 Pandemic Among Fishers and Farmers in the Island Province of Guimaras, Philippines
Creators: name: Gange, Gay Margarett A.
name: Eluriaga, Louie Marie T.
name: Ferrer, Alice Joan G.
name: Gange, Gay Margarett A.
name: Eluriaga, Louie Marie T.
name: Ferrer, Alice Joan G.
Publisher: name: Unknown
Year: 2021
Subjects: subject: Agribusiness
subject: Community/Rural/Urban Development
subject: Crop Production/Industries
subject: Demand and Price Analysis
subject: Livestock Production/Industries
subject: Marketing
subject: FOS: Economics and business
subject: Risk and Uncertainty
subject: coping strategies
subject: COVID-19
subject: farmers
subject: fishers
subject: Guimaras

description: This study describes the experiences and coping strategies related with the COVID-19 threat and the community quarantine policy by the fishers and farmers in the island province of Guimaras. Both food producers faced market related problems such as low demand, low prices of catch and produce, and logistical problems. While the in-kind support (e.g., food provisions) received and adaptive measures (e.g., continued with fishing or adjusted harvest schedule; use of social media or delivery services in marketing) allowed them to get by during the pandemic, there is a need to develop more resilient farming and fishing households. Short-term support can be in the form of cash, production inputs, marketing, and credit. Long-term support can include diversifying livelihood providing savings and loan services, improving post-harvest handling and processing, including the marketing facilities, improving the modes of marketing, and promoting cooperatives.
Factors Associated with the Absence of HIV-L Infection in Commercial Sex Workers in Addis Ababa, Ethiopia
Creators: name: Aklilu, Mathias
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 1998

description: A cross-sectional survey was conducted from August to October 1998 in CSWs attending STD clinics of two health centers in Addis Ababa, Ethiopia. The objective of the study was to describe socia-demographic characteristics, behaviors ofCSWs associated with HIV-I infection. In addition, a sub-group of CSW who remained uninfected despite long years of sex work was identified and described in more detail. Purposive sampling was used for the survey. All CSWs willing to participate were interviewed by female nurses. Blood samples were taken from each respondent for HIV and syphilis test. Characteristics of CSWs were compared between groups using Chi-square and t test where appropriate. Identification of risk factors for HIV infection among CSW was performed using univariate and multivariate analysis (logistic regression model) A total of312 CSWs were enrolled in the study. Their mean age was 25 years. Most of the study participants had little education (786% were less than grade 6). The mean duration of sex work was 5.5 years. Their workplaces included individually owned rooms (41.7%), followed by shared rooms (32,5%). Most of participants had already got instructions about safer sex while working as CSWs, and 43 .0% ofCSWs reported using male condoms in at least 95% of sexual acts with clients. In multivariate analysis, variables independently associated with a protective effect against HIV infection were: higher education (odds ofHIV infection associated with an increase of one category of education: 0.75, 95% CI, 0.58-0.96), instruction by peers about sex work (OR 047,95% CI, 0.23- 0.96) and cleaning after sex with soap (OR, 049, 95% cr, 0.25-0.94). Variables independently associated with an increase in risk of HI V infection were: age 25-29 years (OR, reference category 15-19 years, 3.24,95% CI, 106-9.95), sharing rooms with other sex workers (OR, 3.33, 95%CI, 130-8.5 1), genital bleeding after sex (OR, 2.34, 95% CI, 101-541), and history of genital ulcer in the past years (OR, 2.89, 95% CI, 1.39-5.99). There was no association between number of years of sex work and HIV serostatus. Twenty five sex workers had more than five years of sex work and remained HIV negative. HIV prevalence was remarkably high (80.3%) among sex workers in Addis Ababa. Based on the results of this study, we recommend the strengthening of peer education programs and of early diagnosis and treatment of STDs. The protective effect of cleansing using soap after sex should be explored further On the long run, creating alternative employment opportunities to sex workers should be strongly supported.
Singular effective slip length for longitudinal flow over a dense bubble mattress
Creators: name: Schnitzer, Ory
Publisher: name: arXiv
Year: 2016
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We consider the effective hydrophobicity of a periodically grooved surface immersed in liquid, with trapped shear-free bubbles protruding between the no-slip ridges at a $π/2$ contact angle. Specifically, we carry out a singular-perturbation analysis in the limit $ε\ll1$ where the bubbles are closely spaced, finding the effective slip length (normalised by the bubble radius) for longitudinal flow along the the ridges as $π/{\sqrt{2ε}}-(12/π)\ln 2 + (13π/24)\sqrt{2ε}+ o(\sqrtε)$, the small parameter $ε$ being the planform solid fraction. The square-root divergence highlights the strong hydrophobic character of this configuration; this leading singular term (along with the third term) follows from a local lubrication-like analysis of the gap regions between the bubbles, together with general matching considerations and a global conservation relation. The $O(1)$ constant term is found by matching with a leading-order solution in the "outer'" region, where the bubbles appear to be touching. We find excellent agreement between our slip-length formula and a numerical scheme recently derived using a "unified-transform" method (D. Crowdy, IMA J. Appl. Math., 80 1902, 2015). The comparison demonstrates that our asymptotic formula, together with the diametric "dilute-limit" approximation (D. Crowdy, J. Fluid Mech., 791 R7, 2016), provides an elementary analytical description for essentially arbitrary no-slip fractions.
Nachhaltigkeit in der Kreditfinanzierung
Creators: name: Affolter, Beat
name: Meyer, Julia
name: Richter, Thomas
name: Röthlisberger, Patrick
name: Schweizer, Andreas
Publisher: name: Swiss Sustainable Finance
Year: 2022
Subjects: Finanzierung
Bank
Sustainable Finance
Nachhaltigkeit
Kredit
Hypothek
332: Finanzwirtschaft

description: Für den Einbezug von Nachhaltigkeitsaspekten in den Bereichen Anlegen und Finanzieren hat sich Sustainable Finance (nachhaltige Finanzen) als übergeordneter Begriff etabliert. Auch wenn Sustainable Finance immer schon nachhaltige Aktivitäten in den verschiedensten Finanzbereichen mit einbezogen hat, lag der Fokus der Finanzinstitute wie auch der akademischen Forschung bisher auf dem Anlagegeschäft (Sustainable Investing). Ein eher weniger beleuchtetes Themenfeld ist die nachhaltige Finanzierung (Sustainable Financing), speziell die nachhaltige Kreditfinanzierung (Sustainable Lending).
Da die Kreditfinanzierung eine der wichtigsten Finanzierungsquellen des Privatsektors darstellt (vgl. Box 1), ist sie auch für die aktuelle und zukünftige Nachhaltigkeitsdiskussion von zentraler Bedeutung und soll im Rahmen der vorliegenden Publikation vertieft diskutiert werden. Ziel ist es, einen möglichst umfassenden Überblick zu Theorie, Praxis und zukünftigen Handlungsfeldern im Bereich der nachhaltigen Kreditfinanzierung zu schaffen. Praxisbeispiele zeigen begleitend auf, wie einzelne Teilaspekte bereits konkret umgesetzt werden. Der Fokus liegt auf den zwei wichtigsten Teilgebieten der Kreditfinanzierung, dem Hypothekargeschäft und dem Unternehmenskreditgeschäft.
Als Grundlage werden in Kapitel 1.2 zunächst die relevanten Perspektiven zur Nachhaltigkeit im Kreditwesen und in Kapitel 1.3 die relevanten Handlungsfelder der nachhaltigen Kreditfinanzierung erarbeitet. Diese Grundlagen sind notwendig, um darauf aufbauend die Nachhaltigkeitsbestrebungen im Bereich der Unternehmenskredite (Kapitel 2) sowie im Hypothekarbereich (Kapitel 3) zu diskutieren und die Notwendigkeit der in Kapitel 4 besprochenen weitergehenden Finanzierungsformen im Kreditbereich zu verdeutlichen (spezifische Finanzierung von Nachhaltigkeitslösungen). Ergänzend finden sich in den verschiedenen Kapiteln zahlreiche Boxen, welche weiterführende Hintergrundinformationen, Fallstudien sowie Praxisbeispiele enthalten.
On Lipschitzian properties of implicit multifunctions
Creators: name: Gfrerer, Helmut
name: Outrata, Jiří V.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 49J53, 90C31, 90C46

description: The paper is devoted to the development of new sufficient conditions for the calmness and the Aubin property of implicit multifunctions. As the basic tool one employs the directional limiting coderivative which, together with the graphical derivative, enable us a fine analysis of the local behavior of the investigated multifunction along relevant directions. For verification of the calmness property, in addition, a new condition has been discovered which parallels the missing implicit function paradigm and permits us to replace the original multifunction by a substantially simpler one. Moreover, as an auxiliary tool, a handy formula for the computation of the directional limiting coderivative of the normal-cone map with a polyhedral set has been derived which perfectly matches the framework of [11]. All important statements are illustrated by examples.
The synthesis of some bridged 2, 5-dioxopiperazines and attempts at cyclization of some linear sulfides
Creators: name: Wernert, Gregory Thomas.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Stochastic single-molecule dynamics of synaptic membrane protein domains
Creators: name: Kahraman, Osman
name: Li, Yiwei
name: Haselwandter, Christoph A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Subcellular Processes (q-bio.SC)
subject: Biological Physics (physics.bio-ph)
subject: Biomolecules (q-bio.BM)
subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: Motivated by single-molecule experiments on synaptic membrane protein domains, we use a stochastic lattice model to study protein reaction and diffusion processes in crowded membranes. We find that the stochastic reaction-diffusion dynamics of synaptic proteins provide a simple physical mechanism for collective fluctuations in synaptic domains, the molecular turnover observed at synaptic domains, key features of the single-molecule trajectories observed for synaptic proteins, and spatially inhomogeneous protein lifetimes at the cell membrane. Our results suggest that central aspects of the single-molecule and collective dynamics observed for membrane protein domains can be understood in terms of stochastic reaction-diffusion processes at the cell membrane.
description: Main text (7 pages, 4 figures, 1 table) and supplementary material (3 pages, 3 figures)
Josephson effect as signature of electron-hole superfluidity in bilayers of van der Waals heterostructures
Creators: name: Pascucci, Filippo
name: Conti, Sara
name: Neilson, David
name: Tempere, Jacques
name: Perali, Andrea
Publisher: name: arXiv
Year: 2022
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We investigate a Josephson junction in an electron-hole superfluid in a double layer TMD heterostructure. Observation of a critical tunneling current is a clear signature of superfluidity. In addition, we find the BCS-BEC crossover physics in the narrow barrier region controls the critical current across the entire system. The corresponding critical velocity, which is measurable in this system, has a maximum when the excitations pass from bosonic to fermionic. Remarkably, this occurs for the density at the boundary of the BEC to BCS-BEC crossover regime determined from the condensate fraction. This provides, for the first time in a semiconductor system, an experimental way to determine the position of this boundary.
Nature of excitons bound to inversion domain boundaries: Origin of the 3.45-eV luminescence lines in spontaneously formed GaN nanowires on Si(111)
Creators: name: Pfüller, Carsten
name: Corfdir, Pierre
name: Hauswald, Christian
name: Flissikowski, Timur
name: Kong, Xiang
name: Zettler, Johannes K.
name: Fernández-Garrido, Sergio
name: Doğan, Pınar
name: Grahn, Holger T.
name: Trampert, Achim
name: Geelhaar, Lutz
name: Brandt, Oliver
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate the 3.45-eV luminescence band of spontaneously formed GaN nanowires on Si(111) by photoluminescence and cathodoluminescence spectroscopy. This band is found to be particularly prominent for samples synthesized at comparatively low temperatures. At the same time, these samples exhibit a peculiar morphology, namely, isolated long nanowires are interspersed within a dense matrix of short ones. Cathodoluminescence intensity maps reveal the 3.45-eV band to originate primarily from the long nanowires. Transmission electron microscopy shows that these long nanowires are either Ga polar and are joined by an inversion domain boundary with their short N-polar neighbors, or exhibit a Ga-polar core surrounded by a N-polar shell with a tubular inversion domain boundary at the core/shell interface. For samples grown at high temperatures, which exhibit a uniform nanowire morphology, the 3.45-eV band is also found to originate from particular nanowires in the ensemble and thus presumably from inversion domain boundaries stemming from the coexistence of N- and Ga-polar nanowires. For several of the investigated samples, the 3.45-eV band splits into a doublet. We demonstrate that the higher-energy component of this doublet arises from the recombination of two-dimensional excitons free to move in the plane of the inversion domain boundary. In contrast, the lower-energy component of the doublet originates from excitons localized in the plane of the inversion domain boundary. We propose that this in-plane localization is due to shallow donors in the vicinity of the inversion domain boundaries.
description: 24 pages, 12 figures, 1 table
Small-angle scattering from the Cantor surface fractal on the plane and the Koch snowflake
Creators: name: Cherny, A. Yu.
name: Anitas, E. M.
name: Osipov, V. A.
name: Kuklin, A. I.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The small-angle scattering (SAS) from the Cantor surface fractal on the plane and Koch snowflake is considered. We develop the construction algorithm for the Koch snowflake, which makes possible the recurrence relation for the scattering amplitude. The surface fractals can be decomposed into a sum of surface mass fractals for arbitrary fractal iteration, which enables various approximations for the scattering intensity. It is shown that for the Cantor fractal, one can neglect with a good accuracy the correlations between the mass fractal amplitudes, while for the Koch snowflake, these correlations are important. It is shown that nevertheless, the correlations can be build in the mass fractal amplitudes, which explains the decay of the scattering intensity $I(q)\sim q^{D_{\mathrm{s}}-4}$ with $1 < D_{\mathrm{s}} < 2$ being the fractal dimension of the perimeter. The curve $I(q)q^{4-D_{\mathrm{s}}}$ is found to be log-periodic in the fractal region with the period equal to the scaling factor of the fractal. The log-periodicity arises from the self-similarity of sizes of basic structural units rather than from correlations between their distances. A recurrence relation is obtained for the radius of gyration of Koch snowflake, which is solved in the limit of infinite iterations. The present analysis allows us to obtain additional information from SAS data, such as the edges of the fractal regions, the fractal iteration number and the scaling factor.
description: 8 pages, 6 figures, amended copy
Symmetry studies in general relativity
Creators: name: Carminati, John.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
An Effective Bias Expansion for 21 cm Cosmology in Redshift Space
Creators: name: Qin, Wenzer
name: Schutz, Katelin
name: Smith, Aaron
name: Garaldi, Enrico
name: Kannan, Rahul
name: Slatyer, Tracy R.
name: Vogelsberger, Mark
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A near-future detection of the 21cm signal from the epoch of reionization will provide unique opportunities to probe the underlying cosmology, provided that such cosmological information can be extracted with precision. To this end, we further develop effective field theory (EFT) inspired techniques for the 21cm brightness temperature field during the epoch of reionization, incorporating renormalized bias and a treatment of redshift space distortions. Notably, we confirm that in redshift space, measures of the 21cm brightness, e.g the power spectrum, should have irreducible contributions that lack a bias coefficient and therefore contain direct, astrophysics-free information about the cosmological density field; in this work, we study this effect beyond linear order. To validate our theoretical treatment, we fit the predicted EFT Fourier-space shapes to the THESAN suite of hydrodynamical simulations of reionization at the field level, where the considerable number of modes prevents overfitting. We find agreement at the level of a few percent between the 21cm power spectrum from the EFT fits and simulations over the wavenumber range $k \lesssim 0.8$ h/Mpc and neutral fraction $x_\mathrm{HI} \gtrsim 0.4$, which is imminently measurable by the Hydrogen Epoch of Reionization Array (HERA) and future experiments. The ability of the EFT to describe the 21cm signal extends to simulations that have different astrophysical prescriptions for reionization as well as simulations with interacting dark matter.
description: 25 pages, 10 figures
Coherent structure coloring: identification of coherent structures from sparse data using graph theory
Creators: name: Schlueter-Kuck, Kristy L.
name: Dabiri, John O.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Dynamical Systems (math.DS)
subject: Machine Learning (stat.ML)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: We present a frame-invariant method for detecting coherent structures from Lagrangian flow trajectories that can be sparse in number, as is the case in many fluid mechanics applications of practical interest. The method, based on principles used in graph coloring and spectral graph drawing algorithms, examines a measure of the kinematic dissimilarity of all pairs of fluid trajectories, either measured experimentally, e.g. using particle tracking velocimetry; or numerically, by advecting fluid particles in the Eulerian velocity field. Coherence is assigned to groups of particles whose kinematics remain similar throughout the time interval for which trajectory data is available, regardless of their physical proximity to one another. Through the use of several analytical and experimental validation cases, this algorithm is shown to robustly detect coherent structures using significantly less flow data than is required by existing spectral graph theory methods.
description: In press at Journal of Fluid Mechanics. Software package available at http://dabirilab.com/software/
A Meta-Analysis on Issues Related to Remote Learning Among Secondary School Teachers During COVID-19 Lockdown
Creators: name: syahrul, syed
Publisher: name: figshare
Year: 2022
Subjects: subject: 130313 Teacher Education and Professional Development of Educators
subject: FOS: Educational sciences
subject: Education
subject: 130106 Secondary Education

description: COVID-19 is a very devastating disease that had forced schools to be closed all around the world for safety reasons. This research aims to explore issues
 related to remote learning secondary school teachers during COVID-19. Meta-analysis is used to gather data for this research and involved articles related to remote learning strategies practiced by secondary school teachers during COVID-19. The result shows that teachers use two different remote learning strategies, synchronous
 learning, and asynchronous learning strategies. While teachers have different opinions about the strategies, they agree that both are beneficial to student’s learning.
 Result also shows that teachers also need to focus on the student’s mental state by helping them cope with stress caused by COVID-19
The Involvement of men in family Planning an Application of Transtheoretical model in Wolaita Soddo town south Ethiopia
Creators: name: Wondimu, Abraham
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2009

description: Introduction Reproductive health in its broader sense should be a concern for all and not for just that of women, and reproductive health matters needs the attention of entire family and the society at large. Historically most reproductive health programs focused mainly on women and offered their services exclusively to women's. Most viewed women as the target group and paying little attention to the role that men might have with respect to women's reproductive decision making and behavior. The behaviors of husband and male sexual partners have significant impact on the contraceptive use of their wives and partners.This study explored the involvement of men in family planning by employing one of the health behavior models TransTheoretical model (TTM) in Wolaita Soddo town. Objectives To assess the involvement of men in fertility preference and contraceptive use by using of Tran theoretical model of behavior change Methodology Community based cross-sectional study was done in Wolaita zone, Soddo town Southern Ethiopia. Both qualitative and quantitative method was employed Focus group discussion was a qualitative method to complement the finding of the quantitative study. Data entry, data cleaning and analysis was done by SPSS version15 soft ware package. Ethical clearance was obtained from school of public health faculty of medicine. viii Result About 96% of the respondents were familiar with at least one family planning method the commonly known method pills (96%) Injectables (94.5%), condom (88.6%) Norplant (35.3%) and IUD (22.5%) Overall 65.5% of married men currently practice family planning method 77.5% approved use of contraception and about 60% of study participant discussed the issue of family planning. Behavioral stage of men in family planning method use, 26.7% were in the precontemplation Stage,7.8% contemplation,4.5% preparation,16.1% in the action stage 49.4% in maintenance stage. Conclusion and recommendation The study found high prevalence of knowledge of contraceptive methods among married men, but a relatively low utilization of male method. Discussion between spouses and their joint decision-making on contraceptive use was also found to be high. Most of behavioural stage of men was in maintenance/action stage. Targeted Stage based IEC intervention were recommended Key Words Family planning, Male involvement, Transtheoretical model, Stage of change, Targeted Intervention
On the radiative corrections in the Horava-Lifshitz z=2 QED
Creators: name: Gomes, M.
name: Mariz, T.
name: Nascimento, J. R.
name: Petrov, A. Yu.
name: da Silva, A. J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We calculate one-loop contributions to the two and three point spinor-vector functions in z=2 Horava-Lifshitz QED. This allows us to obtain the anomalous magnetic moment.
description: 10 pages, minor corrections
Multi-step phase transitions and gravitational waves in the inert doublet model
Creators: name: Benincasa, Nico
name: Rose, Luigi Delle
name: Kannike, Kristjan
name: Marzola, Luca
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The inert doublet model is a well-motivated extension of the Standard Model that contains a dark matter candidate and modifies the dynamics of the electroweak symmetry breaking. In order to detail its phenomenology, we perform a comprehensive study of cosmic phase transitions and gravitational wave signals implied by the framework, accounting for the latest results of collider experiments. We require the neutral inert scalar to constitute, at least, a subdominant part of the observed dark matter abundance. While most of the phase transitions proceed through a single step, we identify regions of the parameter space where the electroweak vacuum is reached after multiple phase transitions. The resulting gravitational wave spectrum is generally dominated by single-step transitions and, in part of the parameter space, falls within the reach of future gravitational wave detectors such as LISA, BBO or DECIGO. We find that direct detection experiments efficiently probe the part of parameter space associated with multi-step phase transitions, which remain unconstrained only in the Higgs resonance region testable with future monojet searches. The implications of the new determination of the $W$ boson mass are also discussed.
description: 27 pages, 17 figures. Version accepted by JCAP
Representation theorems for and norm properties of Banach lattices
Creators: name: Bedingfield, Susan Elizabeth.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Cavity-enhanced ultrafast two-dimensional spectroscopy using higher-order modes
Creators: name: Allison, Thomas K.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optics (physics.optics)
subject: Atomic Physics (physics.atom-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We describe methods using frequency combs and optical resonators for recording two-dimensional (2D) ultrafast spectroscopy signals with high sensitivity. By coupling multiple frequency combs to higher-order modes of one or more optical cavities, background-free, cavity-enhanced 2D spectroscopy signals are naturally generated via phase cycling. As in cavity-enhanced ultrafast transient absorption spectroscopy (CE-TAS), the signal to noise is enhanced by a factor proportional to the cavity finesse squared, so even using cavities of modest finesse, a very high sensitivity is expected, enabling ultrafast 2D spectroscopy experiments in dilute molecular beams.
Unidirectional mode selection in bistable quantum cascade ring lasers
Creators: name: Kacmoli, Sara
name: Sivco, Deborah L.
name: Gmachl, Claire F.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Ideal ring resonators are characterized by travelling-wave counterpropagating modes, but in practice travelling waves can only be realized under unidirectional operation, which has proved elusive. Here, we have designed and fabricated a monolithic quantum cascade ring laser coupled to an active waveguide that allows for robust, deterministic and controllable unidirectional operation. Spontaneous emission injection through the active waveguide enables dynamical switching between the clockwise and counterclockwise states of the ring laser with as little as 1.6% modulation of the electrical input. We show that this behavior stems from a perturbation in the bistable dynamics of the ring laser. In addition to switching and bistability, our novel coupler design for quantum cascade ring lasers offers an efficient mechanism for outcoupling and light detection.
description: 13 pages, 6 figures, submitted to journal
Learning about stars from their colors
Creators: name: Prieto, C. Allende
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We pose the question of how much information on the atmospheric parameters of late-type stars can be retrieved purely from colors using standard photometric systems. We carried out numerical experiments using stellar fluxes from model atmospheres, injecting random noise before analyzing them. We examined the presence of degeneracies among atmospheric parameters, and evaluated how well the parameters are extracted depending on the number and wavelength span of the photometric filters available, from the UV GALEX to the mid-IR WISE passbands. We also considered spectrophotometry from the Gaia mission. We find that stellar effective temperatures can be determined accurately ($σ\sim$ 0.01 dex or about 150 K) when reddening is negligible or known, based merely on optical photometry, and the accuracy can be improved twofold by including IR data. On the other hand, stellar metallicities and surface gravities are fairly unconstrained from optical or IR photometryy. However, our ability to retrieve these parameters can improve significantly by adding UV photometry. When reddening is considered a free parameter, assuming it can be modeled perfectly, our experiments suggest that it can be disentangled from the rest of the parameters. This theoretical study indicates that combining broad-band photometry from the UV to the mid-IR allows atmospheric parameters and interstellar extinction to be determined with fair accuracy. The use of UV passbands helps substantially to derive metallicities and surface gravities, as well as to break the degeneracy between effective temperature and reddening. The Gaia BP/RP data can disentangle all the parameters, provided the stellar SEDs are modeled reasonably well.
description: 7 pages, 3 figures, to appear in A&A
Optimal Error-Detecting Codes for General Asymmetric Channels via Sperner Theory
Creators: name: Kovačević, Mladen
name: Vukobratović, Dejan
Publisher: name: arXiv
Year: 2022
Subjects: subject: Information Theory (cs.IT)
subject: Discrete Mathematics (cs.DM)
subject: FOS: Computer and information sciences
subject: 06A07, 68P30, 68R05, 94B25, 94B60

description: Several communication models that are of relevance in practice are asymmetric in the way they act on the transmitted "objects". Examples include channels in which the amplitudes of the transmitted pulses can only be decreased, channels in which the symbols can only be deleted, channels in which non-zero symbols can only be shifted to the right (e.g., timing channels), subspace channels in which the dimension of the transmitted vector space can only be reduced, unordered storage channels in which the cardinality of the stored (multi)set can only be reduced, etc. We introduce a formal definition of an asymmetric channel as a channel whose action induces a partial order on the set of all possible inputs, and show that this definition captures all the above examples. Such a general approach allows one to treat all these different models in a unified way, and to obtain a characterization of optimal error-detecting codes for many interesting asymmetric channels by using Sperner theory.
description: To be presented at the IEEE Information Theory Workshop (ITW), Mumbai, India, Nov. 2022
On varieties of inverse semigroups
Creators: name: Bales, John L.
Publisher: name: Monash University
Year: 2022

description: This thesis was scanned from the print manuscript for digital preservation and is copyright the author.
 Researchers can access this thesis by asking their local university, institution or public library to
 make a request on their behalf. Monash staff and postgraduate students can use the link in the References field.
Examining the Greek Energy-Land-Water Nexus using the CLEWs framework
Creators: name: Karamaneas, Anastasios
name: Koutsellis, Themistoklis
Publisher: name: Zenodo
Year: 2023
Subjects: CLEWs
Energy
Land
Water
EVs
Biofuels
Electricity generation
RES

description: This work aims to examine the impact of climate change mitigation policies on the Energy, Land, and Water nexus of Greece. This is achieved by setting a baseline scenario, as well as three additional scenarios. The first one assumes that the electricity generation sector becomes emissions-free by 2050 and the other two (based on the latter one) investigate how the transport sector can support the transition to a climate-neutral society by 2050. The first transport scenario examines if the full penetration of EVs by 2050 is feasible, whereas the other one examines if it is feasible to achieve significant penetration of vehicles that use the E85 biofuel. The carbon-free electricity scenario is feasible, as well as the full EV penetration scenario, requiring though, the installation of 15GW of additional RES power plants. On the other hand, the E85 biofuel scenario is not feasible if we aim to cover all biofuel demand with domestically produced biofuel crops since the available land for agriculture in Greece is not sufficient for the cultivation of such a significant amount of crops.
description: The IAM COMPACT project has received funding from the European Union's HORIZON EUROPE Research and Innovation Programme under grant agreement No 101056306
Researches on Dynamic Load Balancing Algorithms and hp-Adaptivity in 3-D Parallel Adaptive Finite Element Computations
Creators: name: Liu, Hui
Publisher: name: arXiv
Year: 2016
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: FOS: Computer and information sciences

description: This work is related to PHG (Parallel Hierarchical Grid). PHG is a toolbox for developing parallel adaptive finite element programs, which is under active development at the State Key Laboratory of Scientific and Engineering Computing. The main results of this work are as follows. 1) For the tetrahedral meshes used in PHG, under reasonable assumptions, we proved the existence of through-vertex Hamiltonian paths between arbitrary two vertices, as well as the existence of through-vertex Hamiltonian cycles, and designed an efficient algorithm with linear complexity for constructing through-vertex Hamiltonian paths. The resulting algorithm has been implemented in PHG, and is used for ordering elements in the coarsest mesh for the refinement tree mesh partitioning algorithm. 2) We designed encoding and decoding algorithms for high dimensional Hilbert order. Hilbert order has good locality, and it has wide applications in various fields in computer science, such as memory management, database, and dynamic load balancing. 3) We implemented refinement tree and space filling curve based mesh partitioning algorithms in PHG, and designed the dynamic load balancing module of PHG. The refinement tree based partitioning algorithm was originally proposed by Mitchell, the one implemented in PHG was improved in several aspects. The space filling curve based mesh partitioning function in PHG can use either Hilbert or Morton space filling curve. 4) We studied existing hp-adaptive strategies in the literature, and proposed a new strategy. Numerical experiments show that our new strategy achieves exponential convergence, and is superior, in both precision of the solutions and computation time, to the strategy compared. This part of the work also serves to validate the hp-adaptivity module of PHG.
description: in Chinese