cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Μελέτη Ανάλυσης – Τεκμηρίωσης και Πρόταση Αποκατάστασης του 6ου Δημοτικού Σχολείου Μυτιλήνης
Creators: name: Αρτέμη, Ελένη Νικολάου
Publisher: name: Aristotle University of Thessaloniki
Year: 2022
Subjects: Αποκατάσταση
Σχολείο
Μυτιλήνη
Restoration
School
Mytilene

description: Η παρούσα διπλωματική εργασία αφορά στη μελέτη ανάλυσης – τεκμηρίωσης και την πρόταση για αποκατάσταση του 6ου Δημοτικού Σχολείου Μυτιλήνης. Πρόκειται για ένα σχολείο κατασκευασμένο τη δεκαετία του ’30 με το νέο πρόγραμμα κατασκευής σχολικών κτιρίων που ξεκίνησε η κυβέρνηση Βενιζέλου, αντιπροσωπευτικό του μοντέρνου κινήματος στην Ελλάδα. Το διδακτήριο είναι σχεδιασμένο από τον Πάτροκλο Καραντινό, ξεκίνησε να κατασκευάζεται το 1928 και ολοκληρώθηκε το 1932. Το κτίριο είναι διώροφο, κατασκευασμένο με σκελετό από οπλισμένο σκυρόδεμα και επιστεγάζεται με βατό δώμα. Διαθέτει έξι (6) αίθουσες διδασκαλίας, μία αίθουσα χειροτεχνίας και χώρο εστιατορίου στο ισόγειο τμήμα του. Στον αύλειο χώρο υπήρχε υπόστεγο γυμναστήριο, με χώρους υγιεινής και λουτρά, το οποίο κατεδαφίσθηκε τη δεκαετία του 1990. Από το καλοκαίρι του 2018, στο σχολείο έχουν ξεκινήσει οικοδομικές εργασίες ριζικής ανακαίνισης και ενίσχυσης του φέροντος οργανισμού, στα πλαίσια ενός προγράμματος εκσυγχρονισμού και ενεργειακής αναβάθμισης των σχολικών υποδομών του δήμου Μυτιλήνης. Στόχος της μελέτης είναι η δημιουργία ενός σύγχρονου σχολικού κτιρίου αποκαθιστώντας και αναδεικνύοντας τα αρχιτεκτονικές αξίες και ποιότητες του κτιρίου Καραντινού, κατά την αρχική περίοδο λειτουργίας του, που δυστυχώς μέσα στην πορεία του χρόνου αλλοιώθηκαν, αντικαταστάθηκαν και ξεχάστηκαν.
description: The present thesis concerns the analysis-documentation study and the proposal for the restoration of the 6th Primary School of Mytilene. It is a school built in the 1930s with the new school building construction program launched by the Venizelos government, representative of the modern movement in Greece. The building was designed by Patroklos Karadinos, the construction began in 1928 and was completed in 1932. The building is two-storey, constructed with a reinforced concrete frame and covered with a passable flat roof. It has six (6) classrooms, a craft room and a restaurant area on its ground floor. In the courtyard there was a semi-outdoor gum, with sanitary facilities and baths, which was demolished in the 1990s. Since the summer of 2018, construction works has begun at the school to radically renovate and strengthen the bearing structure, as part of a modernization and energy upgrade program of the school infrastructure of the municipality of Mytilene. The aim of the study is the creation of a modern school building by restoring and accent the architectural values and qualities of the Karadinos building, during its initial period of function, which unfortunately over the course of time were altered, replaced and forgotten.
Effect of maternal caffeine consumption on low birth weight in Butajira, Southern Central Ethiopia: Nested Cohort Study.
Creators: name: Buko, Getachew
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2019

description: Background: Caffeine consumption is common among people throughout the world, Africa and Ethiopia. The prevalence of the caffeine exposure during pregnancy was 69%-79% and excessive caffeine consumption during pregnancy was 14%-57% in most Western countries and in Ethiopia, the prevalence was 41%. The main source to caffeine is through coffee and tea in the world and African countries, including Ethiopia. Even though there were number of studies indicating caffeine intake has reported as a risk factor for low birth weight during pregnancy, the findings are not conclusive in western and no evidence in Ethiopia. Therefore, this study is designed to assess the effect of maternal caffeine consumption on low birth weight during late pregnancy. Objective: The objective of this study was to determine effect of maternal caffeine consumption on low birth weight in Butajira Cohort, South central, Ethiopia. Method: Population based Nested cohort study design was employed among 244 pregnant mothers from September 2018—May 2019 in Butajira. Beverages contain caffeine were collected by 24hour recall method. Birth weight was considered as outcome group. Pediatric weight scale was used for measurement of birth weight with in 72 hour after delivery. Pregnant mothers exposed to caffeine consumption greater than 200mg/day was considered as exposure group. The mean usual intake of caffeine was estimated by National cancer institute (NCI method). Finally the effect of Caffeine on low birth weight was analyzed by log binomial regression by STATA SE version 14. Results: The study found that 26.2% of pregnant women had daily caffeine consumption more than or equal to 200mg/day. The risk of low birth weight was four times more likely to occur in exposed group than in unexposed group (ARR=3.72; 95%CI: 1.76, 7.87). In other hand, the risk of low birth weight was four, five and five times more likely to occur in middle, rich and richest wealth status at (ARR=4.61;95%CI (1.08,19.69,(ARR=5.39;95%CI (1.23,23.58),(ARR=4.54;95%CI(1.07,19.25) respectively than in poorest wealth status. Conclusion and recommendation: In conclusion, excessive maternal caffeine consumption might results in low birth weight. Therefore, intervention that address caffeine exposure among pregnant mother should be designed to reduce the burden of low birth weight.
An experimental study of the ultrasonic wave propagation characteristics of rock joints
Creators: name: Jung., George
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.
Magnetic Spin Ladder (C5H12N)2CuBr4: High-Field Magnetization and Scaling near Quantum Criticality
Creators: name: Granroth, G. E.
name: Hall, D. W.
name: Kotov, V. N.
name: Meisel, M. W.
name: Watson, B. C.
Publisher: name: The American Physical Society
Year: 2001
Subjects: subject: 530

description: Physical Review Letters
Element Abundances in Impulsive Solar Energetic Particle Events
Creators: name: Laming, J. Martin
name: Kuroda, Natsuha
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We outline and discuss a model for the enhanced abundances of trans-Fe elements in impulsive Solar Energetic Particle (SEP) events, where large mass dependent abundance enhancements are frequently seen. It comes about as a variation of the ponderomotive force model for the First Ionization Potential (FIP) Effect, i.e. the increase in coronal abundance of elements like Fe, Mg, and Si that are ionized in the solar chromosphere relative to those that are neutral. In this way, the fractionation region is placed in the chromosphere, and is connected to the solar envelope allowing the huge abundance variations to occur, that might otherwise be problematic with a coronal fractionation site. The principal mechanism behind the mass-independent FIP fractionation becoming the mass dependent impulsive SEP fractionation is the suppression of acoustic waves in the chromosphere. The ponderomotive force causing the fractionation must be due to torsional Alfven waves, which couple much less effectively to slow modes than do shear waves, and upward propagating acoustic waves deriving from photospheric convection must be effectively mode converted to fast modes at the chromospheric layer where Alfven and sound speeds are equal, and subsequently totally internally reflected. We further discuss observations of the environments thought to be the source of impulsive SEPs, and the extent to which the real Sun might meet these conditions.
description: 11 pages, accepted to the Astrophysical Journal
Baby Skyrme model and fermionic zero modes
Creators: name: Queiruga, J. M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this work we investigate some features of the fermionic sector of the supersymmetric version of the baby Skyrme model. We find that, in the background of BPS compact Skyrmions, fermionic zero modes are confined to the defect core. Further, we show that, while three SUSY generators are broken in the defect core, SUSY is completely restored outside. We study also the effect of a D-term deformation of the model. Such a deformation allows for the existence of fermionic zero modes and broken SUSY outside the compact defect.
description: Minor corrections. Version to appear in PRD
Burden and Cost of Outpatient Hemorrhoids in the United States Employer-Insured Population, 2014
Creators: name: Pate, V.
name: Yang, J.Y.
name: Sandler, R.S.
name: Lund, J.L.
name: Peery, A.F.
Publisher: name: NLM (Medline)
Year: 2019

description: INTRODUCTION: Although hemorrhoids are a common indication for seeking health care, there are no contemporary estimates of burden and cost. We examined data from an administrative claims database to estimate health care use and aggregate costs. METHODS: We conducted a cross-sectional study using the MarketScan Commercial Claims and Encounters Database for 2014. The analysis included 18.9 million individuals who were aged 18-64 and continuously enrolled with prescription coverage. Outpatient hemorrhoid claims were captured using the International Classification of Diseases, Ninth Revision, Clinical Modification diagnosis codes in the first position, as well as Common Procedural Terminology codes. Prescription medications were identified using National Drug Codes. Annual prevalence and costs were determined by summing gross payments for prescription medications, physician encounters, and facility costs. We used validated weights to standardize annual cost estimates to the US employer-insured population. RESULTS: In 2014, we identified 227,638 individuals with at least one outpatient hemorrhoid-related claim (annual prevalence, 1.2%). Among those, 119,120 had prescription medication claims, 136,125 had physician claims, and 28,663 had facility claims. After standardizing, we estimated that 1.4 million individuals in the US employer-insured population sought care for hemorrhoids in 2014 for a total annual cost of $770 million. This included $322 million in physician claims, $361 million in outpatient facility claims, and $88 million in prescription medication claims. CONCLUSIONS: The estimated economic burden of hemorrhoids in the employer-insured population approaches $800 million annually. Given the substantial and rising burden and cost, expanded research attention should be directed to hemorrhoidal etiology, prevention, and treatment.
MPEC 2023-S144 : 2023 SQ3
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
subject: 2023 SQ3

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.
Winking filaments due to cyclic evaporation-condensation
Creators: name: Zhou, Yuhao
name: Li, Xiaohong
name: Hong, Jie
name: Keppens, Rony
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Observations have shown that some filaments appear and disappear in the H$α$ line wing images periodically. There have been no attempts to model these "winking filaments" thus far. The evaporation--condensation mechanism is widely used to explain the formation of solar filaments. Here, we demonstrate, for the first time, how multi-dimensional evaporation--condensation in an arcade setup invariably causes a stretching of the magnetic topology. We aim to check whether this magnetic stretching during cyclic evaporation--condensation could reproduce a winking filament. We used our open-source code MPI-AMRVAC to carry out 2D magnetohydrodynamic simulations based on a quadrupolar configuration. A periodic localized heating, which modulates the evaporation--condensation process, was imposed before, during, and after the formation of the filament. Synthetic H$α$ and 304 Å, images were produced to compare the results with observations. For the first time, we noticed the winking filament phenomenon in a simulation of the formation of on-disk solar filaments, which was in good agreement with observations. Typically, the period of the winking is different from the period of the impulsive heating. A forced oscillator model explains this difference and fits the results well. A parameter survey is also done to look into details of the magnetic stretching phenomenon. We found that the stronger the heating or the higher the layer where the heating occurs, the more significant the winking effect appears.
description: 14 pages, 6 figures. Accepted by A&A
Fractional charge pumping of interacting bosons in one-dimensional superlattice
Creators: name: Zeng, Tian-Sheng
name: Zhu, W.
name: Sheng, D. N.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: Motivated by experimental realizations of integer quantized charge pumping in one-dimensional superlattices~[Nat. Phys. 12, 350 (2016); Nat. Phys. 12, 296 (2016)], we generalize and propose the adiabatic pumping of a fractionalized charge in interacting bosonic systems. This is achieved by dynamically sweeping the modulated potential in a class of one-dimensional interacting systems. As concrete examples, we show the charge pumping of interacting bosons at certain fractionally occupied fillings. We find that, for a given ground state, the charge pumping in a complete potential cycle is quantized to the fractional value related to the corresponding Chern number, characterized by the motion of the charge polarization per site. Moreover, the difference between charge polarizations of two ground states is quantized to an intrinsic constant revealing the fractional elementary charge of quasiparticle.
description: 8 pages,7 figures, revised manuscript; Accepted by Phys. Rev. B
Interstellar Bow Shocks around Fast Stars Passing through the Local Interstellar Medium
Creators: name: Shull, J. Michael
name: Kulkarni, S. R.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Bow-shocks are produced in the local interstellar medium by the passage of fast stars from the Galactic thin-disk and thick-disk populations with velocities $V_* = $ 40-80 km/s. Stellar transits of local H I clouds occur every 3500-7000 yr on average and last between $10^4$ and $10^5$ yr. There could be 10-20 active bow shocks around low-mass stars inside clouds within 10-15 pc of the Sun. At local cloud distances of 3-10 pc, their turbulent wakes have transverse radial extents $R_{\rm wake} \approx$ 10-300 AU, angular sizes 10-100 arcsec, and Lyman-alpha surface brightnesses of 2-8 Rayleighs in gas with total hydrogen density $n_H \approx 0.1~{\rm cm}^{-3}$ and $V_* =$ 40-80 km/s. These transit wakes may cover an area fraction $f_A \approx (R_{\rm wake}/R_{\rm cl}) \approx 10^{-3}$ of local H I clouds and be detectable in IR (dust), UV (Lya, two-photon), or non-thermal radio emission. Turbulent heating in these wakes could produce the observed elevated rotational populations of H$_2$ ($J \geq 2$) and influence the endothermic formation of CH$^+$ in diffuse interstellar gas at $T > 10^3$ K.
description: Accepted to Astrophysical Journal, 12 pages with one table
title: Pattern-driven analysis of pedestrian movement
Creators: name: Ali, Hassam
Publisher: name: TU Wien
Year: 2022
Subjects: subject: Pedestrian navigation
subject: machine learning
subject: LBS

description: Pattern mining is the most prominent topic in data mining. Many methods have been proposed to mine patterns, and clustering is one of the most popular methods. Clustering is the grouping of similar data items together. Numerous similarity measures have been proposed to determine the similarity between trajectories for clustering. As indoor Location Based Services (LBS) are maturing now, it is possible to fully track and record indoor movement trajectories, which was not possible until recently. However, it is still unclear which trajectory similarity measures are also effective for indoor environments.In this study, various similarity measures for trajectory clustering are studied to assess their efficacy for indoor pattern mining, and their performance is evaluated by the Silhouette Coefficient. Additionally, a framework for indoor pattern mining is proposed, emphasizing the semantic and spatial aspects of the trajectories. In the proposed framework, semantic patterns are mined first, followed by clustering of spatially similar trajectories participating in a semantic pattern.The results show that the Edit Distance-based metric distance measure, i.e., Edit Distance with Real Penalty (ERP), is more efficient. Furthermore, three out of four unknown venues were successfully predicted, which proves that the proposed framework is effective and a combination of semantic and spatial aspects of trajectories is crucial for indoor trajectory pattern mining, while the temporal aspect could provide added value. Therefore, in the future, it could be a valuable addition to the framework for indoor pattern mining.
Our mutual friend, no. 10
Creators: name: Dickens, Charles, 1812-1870
Publisher: name: University of Victoria Libraries
Year: 2018
Subjects: subject: Inheritance and succession
valueUri: http://id.worldcat.org/fast/973371
subject: Social classes
valueUri: http://id.worldcat.org/fast/1122346
subject: Social conflict
valueUri: http://id.worldcat.org/fast/1122378
subject: Families
valueUri: http://id.worldcat.org/fast/1728849

description: Last complete novel completed by Charles Dickens and is one of his most sophisticated works, combining savage satire with social analysis. In the opening chapters a body is found in the Thames and identified as that of John Harmon, a young man recently returned to London to receive his inheritance. Were he alive, his father's will would require him to marry Bella Wilfer, a beautiful, mercenary girl whom he had never met. Instead, the money passes to the working-class Boffins, and the effects spread into various corners of London society. Issued monthly from May 1864 to November 1865 in illustrated green paper covers. Chapters 14-16: Chapter 14. Strong of purpose -- Chapter 15. The whole case so far -- Chapter 16. An anniversary occasion
Connecting low- and high-mass star formation: the intermediate-mass protostar IRAS 05373+2349 VLA 2
Creators: name: Brown, G. M.
name: Johnston, K. G.
name: Hoare, M. G.
name: Lumsden, S. L.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Until recently, there have been few studies of the protostellar evolution of intermediate-mass (IM) stars, which may bridge the low- and high-mass regimes. This paper aims to investigate whether the properties of an IM protostar within the IRAS 05373+2349 embedded cluster are similar to that of low- and/or high-mass protostars. We carried out Very Large Array as well as Combined Array for Research in Millimeter Astronomy continuum and 12CO(J=1-0) observations, which uncover seven radio continuum sources (VLA 1-7). The spectral index of VLA 2, associated with the IM protostar is consistent with an ionised stellar wind or jet. The source VLA 3 is coincident with previously observed H2 emission line objects aligned in the north-south direction (P.A. -20 to -12 deg), which may be either an ionised jet emanating from VLA 2 or (shock-)ionised cavity walls in the large-scale outflow from VLA 2. The position angle between VLA 2 and 3 is slightly misaligned with the large-scale outflow we map at ~5-arcsec resolution in 12CO (P.A. ~30 deg), which in the case of a jet suggests precession. The emission from the mm core associated with VLA 2 is also detected; we estimate its mass to be 12-23 Msun, depending on the contribution from ionised gas. Furthermore, the large-scale outflow has properties intermediate between outflows from low- and high-mass young stars. Therefore, we conclude that the IM protostar within IRAS 05373+2349 is phenomenologically as well as quantitatively intermediate between the low- and high-mass domains.
description: 11 pages, 7 figures and 4 tables. Accepted by MNRAS
Potential neuroprotective compounds : synthesis and evaluation
Creators: name: Joubran., Lida
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.
Reducing Patient's Medical Record Chart Loss in Ayder Referral Hospital Mekelle, Tigray Regional State
Creators: name: Ataklti, Awet
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2013

description: Introduction: Medical record chart is a multifunctional document that is used document and to communicate information about patients' health status and medical care to patients and among health care professionals. Problem statement: In Ayder referral hospital, there is high medical record chart loss. Objective: To improve patient's medical record handling in Ayder referral hospital by reducing medical record chart lost from 5.9% to 3% by the end of July, 2013. Methods Setting: Ayder referral hospital located in Mekelle city of Tigray Regional State... Project Design: A pre and post intervention was conducted. Source population: All medical record charts in the card room. Target population: 3000 medical records. This was registered from October 01, 2005 - October 21, 2005 E. C in Ayder referral hospital. The study samples were selected systematically from the target population. Data collection procedures: Before the data collection using a simple form a one hour orientation was given for both data collectors and log book rewriters on the objectives of the capstone project, ethical issues, and how to use the data collection tools. Data analysis: The raw data was recorded using paper based system and McNamara's chisquare test was applied. Selected intervention: Establishing properly designed medical record chart handover system and a team that tries to find lost medical record charts by undergoing room-to-room searching. This is the best intervention because, it has high political acceptance, takes shorter time and the expense incurred for medical record hand over form is low as compare to the other strategies. Result: After implementing the selected strategy, the percentage of medical record chart loss was 17(5.9%) in pre and 9 (3.13%) in the post intervention and the usage of medical record chart handover form was 0% in pre and 100% in the post intervention. Conclusion: Sustainable usage of well developed handover form during the withdrawal of medical record chart from the card room and room-to-room searching of medical record chart have a big impact in reducing the loss. Because, it hands them the responsibility. Recommendation: Medical record chart handover form should be used when cards are taken from hospital card room and room-to-room search should be made weekly.
Modeling planet-induced gaps and rings in ALMA disks: the role of in-plane radiative diffusion
Creators: name: Ziampras, Alexandros
name: Nelson, Richard P.
name: Rafikov, Roman R.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: ALMA observations of protoplanetary disks in dust continuum emission reveal a variety of annular structures. Attributing the existence of such features to embedded planets is a popular scenario, supported by studies using hydrodynamical models. Recent work has shown that radiative cooling greatly influences the capability of planet-driven spiral density waves to transport angular momentum, ultimately deciding the number, position, and depth of rings and gaps that a planet can carve in a disk. However, radiation transport has only been treated via local thermal relaxation, not taking into account radiative diffusion along the disk plane. We compare the previous state-of-the-art models of planet-disk interaction with local cooling prescriptions to our new models that include cooling in the vertical direction and radiative diffusion in the plane of the disk, and show that the response of the disk to the induced spiral waves can differ significantly when comparing these two treatments of the disk thermodynamics. We follow up with synthetic emission maps of ALMA systems, and show that our new models reproduce the observations found in the literature better than models with local cooling. We conclude that appropriate treatment of radiation transport is key to constraining the parameter space when interpreting ALMA observations using the planet-disk interaction scenario.
description: 18 pages, 28 figures, 4 tables; submitted to MNRAS
ASSESSMENT OF HEAVY METAL CONTAMINATION IN SURFACE AND GROUNDWATER AT AN ABANDONED TIN MINING SITE IN BARKIN-LADI LGA, PLATEAU STATE, NIGERIA
Creators: name: Chijioke Emeka, Okoro
name: Ifeoma Ngozi, Nwosu
Publisher: name: keith journal
Year: 2025
Subjects: Heavy Metals, Water Pollution, Artisans, Water Quality and Environmental Degradation.

description: The outrageous level of environmental degradation caused by the cruel mining activities accompanied by the unguided and incessant activities of artisanal miners instigates this researchwork. This study was conducted with the aim of assessing the extents of heavy metals contamination on surface water and groundwater resulting from abandoned tin mining paddocks in Barkin-Ladi Local Government Area of Plateau State. Three surface water (upstream, downstream and mine pond) and three groundwater from mined well constitutes the obtained water samples. The samples were tested and analyzed for heavy metals concentration such as Pb, Cr, As, Zn, Cd, Cu, and Fe. The result obtained of the surface water and groundwater samples were compared with the Federal Ministry of Environment water quality suitability standard for domestic use to ascertain implication of the findings. Findings from the study revealed that the heavy metal concentrations of all the water samples are within the limit set by the regulatory body for Pb, Cd, Zn, Cu, Cr, Ar and Fe. The study recommends among others that; the use of artisanal miners, especially children must be seriously discouraged to avoid long-term effects in the future
Non-parametric inverse curvature flows in the AdS-Schwarzschild manifold
Creators: name: Chen, Li
name: Mao, Jing
Publisher: name: arXiv
Year: 2016
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 58E20, 35J35

description: We consider the inverse curvature flows in the anti-de Sitter-Schwarzschild manifold with star-shaped initial hypersurface, driven by the 1-homogeneous curvature function. We show that the solutions exist for all time and the principle curvatures of the hypersurface converges to 1 exponentially fast.
description: 22 pages. Some revisions have been made to v2
Ring-contraction reactions to synthesise epimerically pure 1,3-disubstituted cyclopentane derivatives
Creators: name: Joshua., Fiona Elizabeth
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.
Lattice effects on Laughlin wave functions and parent Hamiltonians
Creators: name: Glasser, Ivan
name: Cirac, J. Ignacio
name: Sierra, Germán
name: Nielsen, Anne E. B.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate lattice effects on wave functions that are lattice analogues of bosonic and fermionic Laughlin wave functions with number of particles per flux $ν=1/q$ in the Landau levels. These wave functions are defined analytically on lattices with $μ$ particles per lattice site, where $μ$ may be different than $ν$. We give numerical evidence that these states have the same topological properties as the corresponding continuum Laughlin states for different values of $q$ and for different fillings $μ$. These states define, in particular, particle-hole symmetric lattice Fractional Quantum Hall states when the lattice is half-filled. On the square lattice it is observed that for $q\leq 4$ this particle-hole symmetric state displays the topological properties of the continuum Laughlin state at filling fraction $ν=1/q$, while for larger $q$ there is a transition towards long-range ordered anti-ferromagnets. This effect does not persist if the lattice is deformed from a square to a triangular lattice, or on the Kagome lattice, in which case the topological properties of the state are recovered. We then show that changing the number of particles while keeping the expression of these wave functions identical gives rise to edge states that have the same correlations in the bulk as the reference lattice Laughlin states but a different density at the edge. We derive an exact parent Hamiltonian for which all these edge states are ground states with different number of particles. In addition this Hamiltonian admits the reference lattice Laughlin state as its unique ground state of filling factor $1/q$. Parent Hamiltonians are also derived for the lattice Laughlin states at other fillings of the lattice, when $μ\leq 1/q$ or $μ\geq 1-1/q$ and when $q=4$ also at half-filling.
description: 18 pages, 15 figures
From Dust to Nanodust: Resolving Circumstellar Dust from the Colliding-Wind Binary Wolf-Rayet (WR) 140
Creators: name: Lau, Ryan M.
name: Wang, Jason
name: Hankins, Matthew J.
name: Currie, Thayne
name: Deo, Vincent
name: Endo, Izumi
name: Guyon, Olivier
name: Han, Yinuo
name: Jones, Anthony P.
name: Jovanovic, Nemanja
name: Lozi, Julien
name: Moffat, Anthony F. J.
name: Onaka, Takashi
name: Ruane, Garreth
name: Sander, Andreas A. C.
name: Tinyanont, Samaporn
name: Tuthill, Peter G.
name: Weigelt, Gerd
name: Williams, Peredur M.
name: Vievard, Sebastien
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Wolf-Rayet (WR) 140 is the archetypal periodic dust-forming colliding-wind binary that hosts a carbon-rich WR (WC) star and an O-star companion with an orbital period of 7.93 years and an orbital eccentricity of 0.9. Throughout the past several decades, multiple dust-formation episodes from WR 140 have been observed that are linked to the binary orbit and occur near the time of periastron passage. Given its predictable dust-formation episodes, WR 140 presents an ideal astrophysical laboratory for investigating the formation and evolution of dust in the hostile environment around a massive binary system. In this paper, we present near- and mid-infrared (IR) spectroscopic and imaging observations of WR 140 with Subaru/SCExAO+CHARIS, Keck/NIRC2+PyWFS, and Subaru/COMICS taken between 2020 June and Sept that resolve the circumstellar dust emission linked to its most recent dust-formation episode in 2016 Dec. Our spectral energy distribution (SED) analysis of WR 140's resolved circumstellar dust emission reveals the presence of a hot ($T_\mathrm{d}\sim1000$ K) near-IR dust component that is co-spatial with the previously known and cooler ($T_\mathrm{d}\sim500$ K) mid-IR dust component composed of $300-500$ Å-sized dust grains. We attribute the hot near-IR dust emission to the presence of nano-sized ("nanodust") grains and suggest they were formed from grain-grain collisions or the rotational disruption of the larger grain size population by radiative torques in the strong radiation field from the central binary. Lastly, we speculate on the astrophysical implications of nanodust formation around colliding-wind WC binaries, which may present an early source of carbonaceous nanodust in the interstellar medium.
description: 21 pages, 8 figures, Accepted for publication in ApJ
Implications of the Conformal Constraint on Sound Speed on the Radius of PSR J0952-0607 within Rastall Gravity
Creators: name: Hanafy, Waleed El
name: Awad, Adel
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: It has been shown that the nonminimal coupling between geometry and matter can provide models for massive compact stars that are consistent with the conformal bound on the sound speed, $0\leqslant {c}_{s}^{2}\leqslant {c}^{2}/3$, where the core density approaches a few times the nuclear saturation density. We impose the conformal upper bound on the sound speed on Rastall's field equations of gravity, with Krori-Barua potentials in the presence of an anisotropic fluid as a matter source, to estimate the radius of the most massive pulsar ever observed, PSR J0952-0607. For its measured mass $M = 2.35\pm 0.17\, M_\odot$, we obtain a radius $R=14.087 \pm 1.0186$ km as inferred by the model. We investigate a possible connection between Rastall gravity and the MIT bag model with an equation of state, ${p}_{r}(ρ)\approx {c}_{s}^{2}\left(ρ-{ρ}_{\rm{s}}\right)$, in the radial direction, with ${c}_{s}=c/\sqrt{3}$ and a surface density $ρ_\text{s}$ slightly above the nuclear saturation density $ρ_\text{nuc}=2.7\times 10^{14}$ g/cm$^{3}$. The corresponding mass-radius diagram is in agreement with our estimated value of the radius and with astrophysical observations of other pulsars at 68% confidence level.
description: PdfLaTeX, 12 pages, 3 figures, 1 table, 1 appendix, published in ApJ
The First AGILE Solar Flare Catalog
Creators: name: Ursi, Alessandro
name: Parmiggiani, Nicolò
name: Messerotti, Mauro
name: Pellizzoni, Alberto
name: Pittori, Carlotta
name: Longo, Francesco
name: Verrecchia, Francesco
name: Argan, Andrea
name: Bulgarelli, Andrea
name: Tavani, Marco
name: Tempesta, Patrizio
name: D'Amico, Fabio
Publisher: name: arXiv
Year: 2023
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report the Astrorivelatore Gamma ad Immagini LEggero (AGILE) observations of solar flares, detected by the on board anticoincidence system in the 80-200 keV energy range, from 2007 May 1st to 2022 August 31st. In more than 15 yr, AGILE detected 5003 X-ray, minute-lasting transients, compatible with a solar origin. A cross-correlation of these transients with the Geostationary Operational Environmental Satellites (GOES) official solar flare database allowed to associate an intensity class (i.e., B, C, M, or X) to 3572 of them, for which we investigated the main temporal and intensity parameters. The AGILE data clearly revealed the solar activity covering the last stages of the 23rd cycle, the whole 24th cycle, and the beginning of the current 25th cycle. In order to compare our results with other space missions operating in the high-energy range, we also analyzed the public lists of solar flares reported by RHESSI and Fermi Gamma-ray Burst Monitor. This catalog reports 1424 events not contained in the GOES official dataset, which, after statistical comparisons, are compatible with low-intensity, short-duration solar flares. Besides providing a further dataset of solar flares detected in the hard X-ray range, this study allowed to point out two main features: a longer persistence of the decay phase in the high-energy regime, with respect to the soft X-rays, and a tendency of the flare maximum to be reached earlier in the soft X-rays with respect to the hard X-rays. Both these aspects support a two-phase acceleration mechanism of electrons in the solar atmosphere.
description: 22 pages, 10 figures
Probing Electron Spin Resonance in Monolayer Graphene
Creators: name: Lyon, Timothy J.
name: Sichau, Jonas
name: Dorn, August
name: Centeno, Alba
name: Pesquera, Amaia
name: Zurutuza, Amaia
name: Blick, Robert H.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The precise value of the $g$-factor in graphene is of fundamental interest for all spin-related properties and their application. We investigate monolayer graphene on a Si/SiO2 substrate by resistively detected electron spin resonance (ESR). Surprisingly, the magnetic moment and corresponding g-factor of 1.952+/-0.002 is insensitive to charge carrier type, concentration, and mobility.
description: 5 pages, 3 figures
Inducing Self-Organized Criticality in a network toy model by neighborhood assortativity
Creators: name: Allen-Perkins, Alfonso
name: Galeano, Javier
name: Pastor, Juan Manuel
Publisher: name: arXiv
Year: 2016
Subjects: subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: Complex networks are a recent type of frameworks used to study complex systems with many interacting elements, such as Self-Organized Criticality (SOC). The network node's tendency to link to other nodes of similar type is characterized by assortative mixing. Real networks exhibit assortative mixing by vertex degree, however typical random network models, such as Erdos-Renyi or Barabasi-Albert, show no assortative arrangements. In this paper we introduce the neighborhood assortativity notion, as the tendency of a node to belong to a community (its neighborhood) showing an average property similar to its own. Imposing neighborhood assortative mixing by degree in a network toy model, SOC dynamics can be found. The long-range correlations resulting from the criticality have been characterized by means of fluctuation analysis and show an anticorrelation in the node's activity. The model contains only one parameter and its statistics plots for different values of the parameter can be collapsed into a single curve. The simplicity of the model allows performing numerical simulations and also to study analytically the statistics for a specific value of the parameter, making use of the Markov chains.
description: 15 pages, 8 figures, resubmitted to PRE
title: The Optimised Mixed-Mode building: countering ac reliance by re-synchronizing the thermal environment with occupant lifestyles in Khartoum
Creators: name: Elsherif, Huda Zeinelabdien Taha
Publisher: name: University of Kent
Year: 2023

description: The Sudanese house has had to evolve four times in the past 200 years due to changing socioeconomic conditions. It went from a spiralling compound of scattered rooms to a compact building with all the functions under one roof. This change was in order to adapt to the reduced plot sizes and changing occupant behaviour and family structure. Air conditioners have been available since the 1960s, but people relied on adaptive behaviours predominantly. Thermal migration to utilise the thermal variety in different parts of the house was an integral part of life in traditional houses. However, in recent years the increased demand of air conditioners created by the return of expats led to an increase in local production and imports, which made them also more readily available. This increased consumption has led to power cuts as the electric grid cannot cope. This research utilised a mixed-mode method to understand the phenomenon from different contexts. Interviews supplemented the literature review of the wider context. Two modern concrete and three traditional buildings were chosen as case studies. Extensive interviews recreated the building's past, while the monitoring for a year documented the current use and internal conditions. The study found that occupants in both typologies used internal spaces for prolonged periods. The internal conditions varied throughout the day based on the thermal mass of the materials used and shading. The study found that the thermal variety that existed in the original traditional houses can be replicated in both modern and modified traditional houses by creating zones. These zones match the user's current modern usage patterns of their house, allowing minimal need for constant movement. This solution allows the Sudanese house to synchronise with the user's daily patterns again, resulting in a reduction in electric consumption.
Η συσχέτιση του εργασιακού στρες με την εργασιακή ικανοποίηση, απόδοση, εξουθένωση και τον τρόπο ζωής των εργαζομένων
Creators: name: Καλλιγιάννη, Χαρίκλεια Μιχαήλ
Publisher: name: Aristotle University of Thessaloniki
Year: 2022
Subjects: Εργασιακό στρες
Εργασιακή ικανοποίηση
Επαγγελματική εξουθένωση
Job stress
Job satisfaction
Job burnout

description: Το εργασιακό στρες έχει αποτελέσει τα τελευταία χρόνια αντικείμενο μελέτης, καθώς επηρεάζει όχι μόνο τη σωματική και ψυχική υγεία αλλά και την αποδοτικότητα των εργαζομένων. Σκοπός της παρούσας έρευνας είναι να διερευνηθεί η συσχέτιση του εργασιακού στρες με την εργασιακή ικανοποίηση, εργασιακή απόδοση, επαγγελματική εξουθένωση αλλά και με τον τρόπο ζωής των εργαζομένων (διατροφικές συνήθειες και σωματική δραστηριότητα). Προκειμένου να γίνουν κατανοητές οι παραπάνω έννοιες πραγματοποιήθηκε μία επισκόπηση της βιβλιογραφίας. Το δείγμα της έρευνας ήταν 162 εργαζόμενοι και των δύο φύλων που τους χορηγήθηκε ηλεκτρονικό ερωτηματολόγιο μέσω της πλατφόρμας «Google Forms», αποτελούμενο από πέντε κλίμακες μέτρησης. Η στατιστική ανάλυση των δεδομένων πραγματοποιήθηκε στο στατιστικό πρόγραμμα SPSS. Στα αποτελέσματα της έρευνας διαπιστώθηκε ότι το εργασιακό στρες συσχετίζεται αρνητικά με την εργασιακή ικανοποίηση των εργαζομένων. Επιπρόσθετα, διαπιστώθηκε ότι το εργασιακό στρες συσχετίζεται θετικά με την επαγγελματική εξουθένωση. Όσον αφορά με τις υπόλοιπες τρεις μεταβλητές (εργασιακή απόδοση, υγιεινές διατροφικές συνήθειες εργαζομένων, σωματική δραστηριότητα εργαζομένων) δεν παρουσίασαν στατιστικά σημαντική συσχέτιση με το εργασιακό στρες. Τέλος, προτείνονται χρήσιμες πρακτικές και ερευνητικές προεκτάσεις και επισημαίνονται οι περιορισμοί της έρευνας.
description: Job stress has lately become an object of scientific investigation, as it is related not only with psychological and physiological health of the employees, but with their work performance, as well. This research aims to investigate the correlation between job stress and job satisfaction, job performance, job burnout and health behaviors (healthy eating and physical activity) of the employees. In order to clarify these concepts, we did a review of the current literature. The research sample was 162 employees of both genders. The participants answered a digital questionnaire via the platform “Google Forms”, which consisted of 5 scales. The results showed a statistically significant positive relationship between job stress and burnout and a negative relationship between job stress and job satisfaction. No other statistically significant correlation was found between job stress and the rest basic variables (job performance, healthy eating habits, physical activity). In the end, we propose ideas for practical use of the results and for future research and we mention the limits of our research.
AGN feedback in action in the molecular gas ring of the Seyfert galaxy NGC7172
Creators: name: Alonso-Herrero, A.
name: Garcia-Burillo, S.
name: Pereira-Santaella, M.
name: Shimizu, T.
name: Combes, F.
name: Hicks, E. K. S.
name: Davies, R.
name: Almeida, C. Ramos
name: Garcia-Bernete, I.
name: Hoenig, S. F.
name: Levenson, N. A.
name: Packham, C.
name: Bellocchi, E.
name: Hunt, L. K.
name: Imanishi, M.
name: Ricci, C.
name: Roche, P.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present new ALMA observations of the CO(3-2) transition and 854micron continuum at 0.06-0.3" resolution, together with new VLT/SINFONI observations of NGC7172. This is a luminous (bolometric luminosity of ~10^44 erg/s) Seyfert galaxy that belongs to the Galaxy Activity, Torus, and Outflow Survey (GATOS). The CO(3-2) observations reveal the presence of a highly inclined cold molecular gas ring with an approximate radius of 3-4"~540-720 pc, which is likely associated with an inner Lindblad resonance of a putative stellar bar. There are noncircular motions in the VLT/SINFONI [SiVI]1.96micron and H2 at 2.12micron, and ALMA CO(3-2) velocity fields. After subtracting the stellar velocity field, we detected [SiVI] blueshifted velocities of a few hundred km/s to the south of the AGN. They trace outflowing ionized gas outside the plane of the galaxy and out to projected distances of ~200 pc. The CO(3-2) position-velocity diagram along the kinematic minor axis displays noncircular motions with observed velocities of up to ~150 km/s. Assuming that these are taking place in the disk of the galaxy, the observed velocity signs imply that the molecular gas ring is not only rotating but also outflowing. We derived an integrated cold molecular gas mass outflow rate of ~40 Msun/yr for the ring. Using the 854micron map, we resolved a 32 pc radius torus with a gas mass of 8x10^5 Msun. These torus properties are similar to other Seyfert galaxies in the GATOS sample. We measured a decreased cold molecular gas concentration in the nuclear-torus region relative to the circumnuclear region when compared to other less luminous Seyfert galaxies. We conclude that the effects of AGN feedback in NGC7172, which are likely caused by the AGN wind and/or the moderate luminosity radio jet, are seen as a large-scale outflowing molecular gas ring and accompanying redistribution of molecular gas in the nuclear regions.
description: Accepted for publication to A&A
A dielectric matrix calculation of the electron inelastic scattering potential for silicon & gallium arsenide
Creators: name: Josefsson., Torgny Wilhelm Emanuel
Publisher: name: Monash University
Year: 2021

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