cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Translating a Sustainability Experiment Across Contexts: A Case Study of Food Waste Management in Milan and the ACT
Creators: name: Wang, Shengnan
Publisher: name: The Australian National University
Year: 2019

description: Cities present both problems and solutions to sustainability challenges, including the issue of food waste. Urban households have received significant attention as they are one of the biggest contributors to such waste at the food consumption stage. Urban sustainability experiments are vital tools for cities to explore transitions towards more sustainable modes of production and consumption of food, especially when they are multiplied in other contexts, allowing broader sustainability goals to be achieved beyond local foci. Despite a growing body of literature on sustainability transitions focusing on how to ‘broaden’ and ‘upscale’ successful urban experiments, a comprehensive understanding of factors facilitating or obstructing the process of translating sustainability experiments has yet to be achieved. This thesis aims to address this knowledge gap by using two case studies to explore the opportunities and barriers involved in transferring a successful household food waste management strategy from one place to another. The city of Milan is used as the origin city in which the sustainability experiment was created and the Australian Capital Territory (ACT) is the receptor city adopting the experiment. Interviews and surveys were conducted to examine the institutional, technical, financial and attitudinal opportunities and barriers in translating Milan’s experiment to the ACT. Possible ‘interactions’ between the ACT’s innovative niche experiments and Milan’s sustainability experiment are explored to understand the roles of existing innovative practices in contextualising an external experiment. Theoretically, the major finding is that existing local niche experiments play an important role alongside other, widely agreed factors in the process of contextualising external procedures. Practically, this thesis explores implications for future food waste management approaches in the ACT, concluding that the door-to-door separate food waste collection model and a combined solution (supporting existing innovative practices and implementing a centralised approach) to food waste processing might offer a preferred household food waste management method in future.
Low-loss Si-based Dielectrics for High Frequency Components of Superconducting Detectors
Creators: name: Lisovenko, M.
name: Pan, Z.
name: Barry, P. S.
name: Cecil, T.
name: Chang, C. L.
name: Gualtieri, R.
name: Li, J.
name: Novosad, V.
name: Wang, G.
name: Yefremenko, V.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: Silicon-based dielectric is crucial for many superconducting devices, including high-frequency transmission lines, filters, and resonators. Defects and contaminants in the amorphous dielectric and at the interfaces between the dielectric and metal layers can cause microwave losses and degrade device performance. Optimization of the dielectric fabrication, device structure, and surface morphology can help mitigate this problem. We present the fabrication of silicon oxide and nitride thin film dielectrics. We then characterized them using Scanning Electron Microscopy, Atomic Force Microscopy, and spectrophotometry techniques. The samples were synthesized using various deposition methods, including Plasma-Enhanced Chemical Vapor Deposition and magnetron sputtering. The films morphology and structure were modified by adjusting the deposition pressure and gas flow. The resulting films were used in superconducting resonant systems consisting of planar inductors and capacitors. Measurements of the resonator properties, including their quality factor, were performed.
description: 4 pages, 5 figures, conference
Additional file 1 of Empirical assessment of functional somatic disorder (FSD): frequency, applicability, and diagnostic refinement in a population-based sample
Creators: name: Smakowski, Abigail
name: Rosmalen, Judith
name: Löwe, Bernd
name: Burton, Christopher
name: Toussaint, Anne
Publisher: name: figshare
Year: 2025
Subjects: Medicine
Biotechnology
Biological Sciences not elsewhere classified
Science Policy
Mental Health

description: Supplementary Material 1. Supplementary file 1 –Table of variables included in analysis. Supplementary File 2 – Table of all chronic conditions by organ system. Supplementary File 3 – Table of symptoms investigated in this study by organ system. Supplementary File 4 – Table of self-reported persistent and troublesome symptoms according to validated questionnaires within the Lifelines sample. Supplementary File 5 – Bar graph depicting self-reported bothersome persistent symptom frequencies. Supplementary File 6 – Sankey diagram illustrating the flow of the population divided by subgroups of FSD and the relative proportions of comorbidities.
An optimized semi-empirical physical approach for satellite-based PM2.5 retrieval: using random forest model to simulate the complex parameter
Creators: name: Caiyi Jin
Publisher: name: Zenodo
Year: 2022
Subjects: PM2.5; Physical approach; Machine learning; Volume-to-extinction ratio; Fine mode fraction

description: The semi-empirical physical approach derives PM2.5 with strong physical significance. However, due to the complex optical relationship, the physical parameters are difficult to calculate accurately. Thus, we propose an optimized model combining the atmospheric physical model and machine learning. It creatively embeds the random forest model into the physical PM2.5 remote sensing approach to simulate a physical parameter (i.e., VEf). Our method shows great optimized performance. The compressed file contains all the relevant codes and part of the data for this work. The original data was not uploaded because it was too large. See the paper for the download address and processing process.
Temperature dependence of the axial magnetic effect in two-color quenched QCD
Creators: name: Braguta, V.
name: Chernodub, M. N.
name: Goy, V. A.
name: Landsteiner, K.
name: Molochkov, A. V.
name: Polikarpov, M. I.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The Axial Magnetic Effect is the generation of an equilibrium dissipationless energy flow of chiral fermions in the direction of the axial (chiral) magnetic field. At finite temperature the dissipationless energy transfer may be realized in the absence of any chemical potentials. We numerically study the temperature behavior of the Axial Magnetic Effect in quenched SU(2) lattice gauge theory. We show that in the confinement (hadron) phase the effect is absent. In the deconfinement transition region the conductivity quickly increases, reaching the asymptotic $T^2$ behavior in a deep deconfinement (plasma) phase. Apart from an overall proportionality factor, our results qualitatively agree with theoretical predictions for the behavior of the energy flow as a function of temperature and strength of the axial magnetic field.
description: 5 pages, 1 figure
Probing the temporal and spatial variations of dust emission in the protoplanetary disk of DG Tau with VLTI/MIDI - Preliminary results
Creators: name: Gabanyi, K. E.
name: Mosoni, L.
name: Juhasz, A.
name: Abraham, P.
name: Ratzka, Th.
name: Sipos, N.
name: van Boekel, R.
name: Jaffe, W.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The signatures of dust processing and grain growth - related to the formation of rocky planets - are easily seen in mid-infrared spectral features. One important diagnostic tool in this context is the silicate feature in the spectra of young stellar objects (YSO). The low-mass YSO, DG Tau shows unique temporal variations in its silicate feature. We conducted multi-epoch observations of DG Tau with the MID-Infrared Interferometric instrument of the Very Large Telescope Interferometer to obtain the spectra of the inner and outer disk regions in order to investigate where the previously reported variations of the silicate feature originate from. Here we present the preliminary results of the first two epochs of observations. We found that on a time-scale of two months, the source showed significant brightening. At the same time the mid-infrared emitting region expanded. While the identification of the silicate feature is difficult, our results qualitatively agree with the scenario explaining the varying silicate feature with dust lifted up above the disk.
description: 4 pages, 4 figures. Accepted for publication in Astronomische Nachrichten
Dendroclimatological Analysis of the Impact of Recent Temperature and Snow Trends on Podocarpus lawrencei in the Australian Alps
Creators: name: Pearce, Emma Lee
Publisher: name: The Australian National University
Year: 2017

description: Alpine and sub-alpine ecosystems are particularly vulnerable to the impacts of anthropogenic climate change. Consequently, understanding the impact of current temperature and snow trends in these areas is vital in predicting the longer-term impacts of climate change. The Australian Alps contain a diverse array of ecosystems and species, which are especially susceptible to climate change due to the low elevation of the mountain range in comparison to alpine areas elsewhere. The main aims of this study were to use dendrochronological methods to identify the sensitivity of Podocarpus lawrencei (mountain plum pine) growth to variability in air temperature and snow depth throughout the Australian Alps and to determine whether recent temperature and snow depth trends are impacting long-term growth of the species. Tree-ring width data was obtained from full stem cross-sections from Mt Bimberi and Mt Murray in the ACT, Mt Jagungal in NSW, as well as Falls Creek and Mt Buller in Victoria. These tree-ring width series were then objectively crossdated and standardised to create site-level ring width chronologies. Multiple dendrochronological standardisation methods were used to create chronologies that emphasised short-term and long-term tree-ring width variability. These chronologies were then integrated using principal component analysis to generate regional chronologies that emphasised common variability trends. The chronologies comprising the first and second principal components revealed correlations with snow depth and temperature respectively. More importantly, correlation between the principal component chronologies and these climate variables weakened significantly over the latter part of the twentieth century. In addition, a significant positive temporal trend is evident in tree-ring width during the same period. This trend suggests that recent trends in temperature and snow that are potentially linked to anthropogenic climate change, may be impacting upon P. lawrencei throughout the Australian Alps.
The habitat value and public perceptions of totem trees in Canberra urban parklands
Creators: name: Pecenko, Alexander
Publisher: name: The Australian National University
Year: 2016

description: This thesis investigates Totem trees, i.e., standing dead trees that have been made "safe" through the removal of unstable or decayed branches, in seven Canberra parklands. To date, these trees have not been the subject of academic research, hence this thesis is the first study, aiming to assess their habitat value and public attitudes towards their safety and conservation. It employs a mixed methods approach, incorporating: silvicultural assessment; fauna appraisal by ad libitum sampling, focal sampling, and evidence for fauna presence; and a purposive questionnaire survey for evaluation of the public perceptions about the Totem trees’ habitat value, safety and conservation. This study demonstrates that the mixed methods approach to data collection is very effective, especially in research encompassing the intersection of human and natural habitats. The thesis has yielded a holistic assessment and comprehensive understanding of Totem trees’ diverse habitat and community values. The findings in the thesis demonstrate that the Totem trees, studied in the Canberra parklands, have significant habitat value: they provide perching, nesting, vocalisation, habitation, and feeding sites for Aves and arboreal Mammalia, as well as habitation and food for Invertebrata. In addition, this study shows that Totem trees with a greater number of hollows and structural complexity are notably more sought after habitat for fauna. The public survey indicates a generally positive attitude to Totem trees; most participants perceived them as a valuable habitat for fauna, Aves in particular, and appreciated the trees’ aesthetic appeal. However, many participants expressed uncertainty about the trees’ safety, indicating a lack of information and public awareness about their conservation and management policies. In conclusion, this study recommends conservation of the current Totem tree population and further "totemisation" of standing dead trees in urban forests, especially large old trees with great structural complexity. The survey indicates that the public needs to be better informed about the safety management of Totem trees and the importance of their conservation.
Soft limits to climate change adaptation in Albury-Wodonga local government
Creators: name: Peters, Edith
Publisher: name: The Australian National University
Year: 2016

description: Soft limits is an emerging field of research. Identifying soft limits plays a critical role in understanding why stakeholders could experience no desirable climate change adaptation options, due to something they value being lost or experiencing intolerable risk. This is the first study to apply the concept of soft limits where the cultural values that are threatened are not directly connected to a ‘natural resource’. This thesis uses the concept of soft limits to climate change adaptation and applies it to the experience of two local governments, Albury City and City of Wodonga. Most studies on local government have questioned what makes it difficult for local government to adapt to climate change, this research takes a different approach and asking what stops more climate change adaptation occurring. Furthermore, the decision-making context these two local governments operate is examined. Firstly, the interaction state government policy and local government is explored. In addition the unique pressures and challenges of the local governments face is considered. The findings from this study suggest that mental models of climate change adaptation could be acting as a soft limit. The mental model leads to management that does not appreciate and account for the inextricable connection between object stakeholders value and the environment. At the level of state government, the policy framework in Victoria created a conducive environment for local government climate change adaptation than New South Wales. For Albury City, perceived economic and financial vulnerabilities affected decision-making. At the City of Wodonga there was greater appreciation of the connections between valued objects and the environment but perceptions around the role of government influenced decision-making.
Conserving the nest of life: An exploration of knowledge governance in the Palau Protected Areas Network
Creators: name: Pilbeam, Victoria
Publisher: name: The Australian National University
Year: 2015

description: This thesis uses a knowledge governance approach in order to understand the decision-making processes around conservation in the Palau Protected Areas Network (PAN). Despite unprecedented knowledge of conservation science, mass extinction of species continues. To explain this phenomena, scholars have identified a gap between the knowledge of conservation and actions which promote effective conservation. While past research has largely focused on somewhat linear attempts to bridge this gap by connecting science and decision-makers, this study argues that an appreciation of socio-cultural values and their associated rules and norms is crucial to understanding what kinds of knowledge are enacted, by whom and why. Knowledge governance offers a critical and inclusive framework for analysing the role of these forces in decision-making processes. From a constructivist standpoint, a wider theoretical frame based on Jasanoff’s civic epistemologies (2005) is brought together with qualitative evidence around decision-making to construct an operational model of knowledge governance. This conceptual approach is applied to a qualitative case study of the Palauan Protected areas with specific reference to three protected areas exhibiting a range of different conservation practices and contexts. Palauan conservation, lauded internationally as a model for innovative marine initiatives, presents a particularly fertile case study for developing theory in this area because its decision-making context combines customary and scientific knowledge. The findings of this study suggest knowledge governance in Palau is largely determined by whether the audience for conservation in question is internal or external. Because customary knowledge is spoke more effectively to local audiences, it had more traction in decision-making than science and techno-rational approaches which fitted better with the expectations of external audiences. However, this may change as the external audience for Palauan conservation expands and internal audiences become more susceptible to scientific knowledge. This thesis seeks to learn from, and not just about Palauan experiences of conservation. It acknowledges that Palauan experiences present important and legitimate insights into the ways in which knowledge comes to be seen as a valid basis for action. Though an investigation of this case study, not only do I apply knowledge governance as an analytical tool using the notion of audiences but Jasanoff’s original framework is expanded on to include issues around trust and ownership. Through these lessons, this work contributes to a greater understanding of the connections between knowledge and decision-making which is vital to ensuring successful conservation.
Poly(dA:dT)-rich DNAs are highly flexible in the context of DNA looping
Creators: name: Johnson, Stephanie
name: Chen, Yi-Ju
name: Phillips, Rob
Publisher: name: arXiv
Year: 2013
Subjects: subject: Biomolecules (q-bio.BM)
subject: FOS: Biological sciences

description: Large-scale DNA deformation is ubiquitous in transcriptional regulation in prokaryotes and eukaryotes alike. Though much is known about how transcription factors and constellations of binding sites dictate where and how gene regulation will occur, less is known about the role played by the intervening DNA. In this work we explore the effect of sequence flexibility on transcription factor-mediated DNA looping, by drawing on sequences identified in nucleosome formation and ligase-mediated cyclization assays as being especially favorable for or resistant to large deformations. We examine a poly(dA:dT)-rich, nucleosome-repelling sequence that is often thought to belong to a class of highly inflexible DNAs; two strong nucleosome positioning sequences that share a set of particular sequence features common to nucleosome-preferring DNAs; and a CG-rich sequence representative of high G+C-content genomic regions that correlate with high nucleosome occupancy in vivo. To measure the flexibility of these sequences in the context of DNA looping, we combine the in vitro single-molecule tethered particle motion assay, a canonical looping protein, and a statistical mechan- ical model that allows us to quantitatively relate the looping probability to the looping free energy. We show that, in contrast to the case of nucleosome occupancy, G+C content does not positively correlate with looping probability, and that despite sharing sequence features that are thought to determine nucleosome affinity, the two strong nucleosome positioning sequences behave markedly dissimilarly in the context of looping. Most surprisingly, the poly(dA:dT)-rich DNA that is often characterized as highly inflexible in fact exhibits one of the highest propensities for looping that we have measured.
description: Published version and Supporting Information available at: http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0075799
title: Kompensation von Sichteinschränkungen an Flurförderzeugen
Creators: name: Jütte, Lukas
name: Poschke, Alexander
name: Overmeyer, Ludger
Publisher: name: Wissenschaftliche Gesellschaft für Technische Logistik
Year: 2020
Subjects: subject: Augmented Reality
subject: Bildverarbeitung
subject: Erweiterte Realität
subject: Fahrerassistenzsysteme
subject: Flurförderzeuge
subject: Hinderniserkennung
subject: driver assistance system
subject: forklift trucks
subject: image processing
subject: obstacle detection
subject: 620

description: Volume 2020, Issue 12
description: In diesem Artikel wird ein Verfahren zur automatischen Sichteinschränkungsdetektion und maskenbasierten, deckungsgleichen Sichteinschränkungskompensation, basierend auf dem Prinzip der erweiterten Realität, vorgestellt. Das Verfahren beruht auf einer Überlagerung eines simulierten Bedienerblickfeldes mit Informationen aus einer von zwei RGB-Kameras rekonstruierten Szene. Die Kameras werden derart angeordnet, dass sie die Szeneninformationen hinter der Sichteinschränkung aufnehmen können. Neben der Vorstellung des Versuchsaufbaus, findet eine detaillierte Vorstellung der Bildverarbeitungssoftware statt. Im Hinblick auf den späteren Einsatz des Systems in einem Flurförderzeug, wird zudem die Echtzeitfähigkeit untersucht und Optimierungsmöglichkeiten diskutiert.
description: In this article, a method for automatic visual obstruction detection and masktype congruent visual obstruction compensation, based on the principal of augmented reality, is presented. The method is based on the superposition of a simulated operator’s field of view with information from a scene reconstructed by two RGB-Cameras. These cameras are arranged in a way that they can record the scene information be-hind the view restriction. Besides the presentation of the test rig, a detailed presentation of the image pro-cessing software is given. With a view to the later use of the system in a forklift truck, the real-time capa-bility of the system will be tested and optimization possibilities will be discussed.
title: Curcumin as an Epigenetic Therapeutic Agent in Myelodysplastic Syndromes (MDS)
Creators: name: Xie, Xiaoqing
name: Frank, Daria
name: Patnana, Pradeep Kumar
name: Schütte, Judith
name: Al-Matary, Yahya Saleh Ahmed
name: Liu, Longlong
name: Wei, Lanying
name: Dugas, Martin
name: Varghese, Julian
name: Nimmagadda, Subbaiah Chary
name: Khandanpour, Cyrus
Publisher: name: University of Muenster, Institutional Repository MIAMI
Year: 2022
Subjects: subject: 610 Medicine and health

description: Growth Factor Independence 1 (GFI1) is a transcription factor with an important role in the regulation of development of myeloid and lymphoid cell lineages and was implicated in the development of myelodysplastic syndrome (MDS) and acute myeloid leukaemia (AML). Reduced expression of GFI1 or presence of the GFI1-36N (serine replaced with asparagine) variant leads to epigenetic changes in human and murine AML blasts and accelerated the development of leukaemia in a murine model of human MDS and AML. We and other groups previously showed that the GFI1-36N allele or reduced expression of GFI1 in human AML blasts is associated with an inferior prognosis. Using GFI1-36S, -36N -KD, NUP98-HOXD13-tg mice and curcumin (a natural histone acetyltransferase inhibitor (HATi)), we now demonstrate that expansion of GFI1-36N or –KD, NUP98-HODXD13 leukaemic cells can be delayed. Curcumin treatment significantly reduced AML progression in GFI1-36N or -KD mice and prolonged AML-free survival. Of note, curcumin treatment had no effect in GFI1-36S, NUP98-HODXD13 expressing mice. On a molecular level, curcumin treatment negatively affected open chromatin structure in the GFI1-36N or -KD haematopoietic cells but not GFI1-36S cells. Taken together, our study thus identified a therapeutic role for curcumin treatment in the treatment of AML patients (homo or heterozygous for GFI1-36N or reduced GFI1 expression) and possibly improved therapy outcome.
description: Finanziert durch den Open-Access-Publikationsfonds der Westfälischen Wilhelms-Universität Münster (WWU Münster).
Confinement-induced shape transitions in multilamellar vesicles
Creators: name: Sakashita, Ai
name: Imai, Masayuki
name: Noguchi, Hiroshi
Publisher: name: arXiv
Year: 2013
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Morphologies of a vesicle confined in a spherical vesicle were explored experimentally by fast confocal laser microscopy and numerically by a dynamically-triangulated membrane model with area-difference elasticity. The confinement was found to induce several novel shapes of the inner vesicles, that had been never observed in unilamellar vesicles: double and quadruple stomatocytes, slit vesicle, and vesicles of two or three compartments with various shapes. The simulations reproduced the experimental results very well and some of the shape transitions can be understood by a simple theoretical model for axisymmetric shapes.
description: 5 pages, 4 figures
Immune modulation as a therapeutic strategy in bone regeneration
Creators: name: Schlundt, Claudia
name: Schell, Hanna
name: Goodman, Stuart
name: Vunjak-Novakovic, Gordana
name: Duda, Georg
name: Schmidt-Bleek, Katharina
Publisher: name: Columbia University
Year: 2015
Subjects: Macrophages--Research
Bones--Diseases--Treatment
Fractures
Bone regeneration

description: We summarize research approaches and findings on bone healing and regeneration that were presented at a workshop at the 60th annual meeting of the Orthopedic Research Society (ORS) in New Orleans in 2014. The workshop was designed to discuss the role of inflammation in bone regeneration in the context of fundamental biology, and to develop therapeutic strategies that involve immune modulation. Delayed or non-healing of bone is a major clinical problem, with around 10% of fracture patients suffering from unsatisfying healing outcomes. Inflammation is traditionally seen as a defense mechanism, but was recently found essential in supporting and modulating regenerative cascades. In bone healing, macrophages and T- and B-cells interact with progenitor cells, bone forming osteoblasts and remodeling osteoclasts. Among the cells of the innate immunity, macrophages are promising candidates for targets in immune-modulatory interventions that would overcome complications in bone healing and bone-related diseases. Among the cells of the adaptive immune system, CD8+ T cells have been shown to have a negative impact on bone fracture healing outcome, whereas regulatory T cells could be promising candidates that have a positive, modulating effect on bone fracture healing. This workshop addressed recent advances and key challenges in this exciting interdisciplinary research field.
High temperature expansion of double scaled SYK
Creators: name: Okuyama, Kazumi
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the high temperature (or small inverse temperature $β$) expansion of the free energy of double scaled SYK model. We find that this expansion is a convergent series with a finite radius of convergence. It turns out that the radius of convergence is determined by the first zero of the partition function on the imaginary $β$-axis. We also show that the semi-classical expansion of the free energy obtained from the saddle point approximation of the exact result is consistent with the high temperature expansion of the free energy.
description: 13 pages
Wind-up system for a Lever Operated Pivoting Float-Buoy
Creators: name: Frederiksen, A. A.
name: Andersen, A. G.
name: Juul, K. J.
name: Bernitt, M. L.
name: Nielsen, P. R.
name: Katkjær, R.
Publisher: name: Technical University of Denmark : Grøn Dyst
Year: 2012

description: INTRODUCTION
The project that this abstract revolves around is being prepared in connection with the
course Project Work (41801) and focuses on the construction of a wind-up system for a
Lever Operated Pivoting Float-buoy (LOPF) in cooperation with Resen Waves. The purpose
of the buoy is to transform energy from waves in the ocean to electrical energy. The system
is put in place to allow for the buoy to move with the waves in the best possible manner, and
allow it to be dragged under water in case of a storm. Optimizing how the buoy follows the
waves is essential, as it allows for the buoy to create a larger amount of energy. It is the
wired connection to the bottom (Figure 1), with the movement of the waves that makes
the shaft rotate.
PROJECT
The objective of the project is to develop a system able to draw the buoy closer to the
bottom of the ocean, if the water level is low or a storm is coming. This means shortening
the wire on Figure 1. The first part of the project focused on the general design of the
system and its mechanical properties. A lengthy calculation process was needed to
dimension the system to the buoy, because it was important that it fit the requirements.
These were: 1. Able to pull the buoy underwater during a storm and 2. Not using too much
power. For the system to be able to live up to these requirements, extensive calculations on
the gears of the system were needed, and the right motor had to be found. The solution was
then graphically rendered in SolidWorks, as work drawings of the systems different parts
were needed for fabrication. After the parts have been fabricated, the system is to be tested
in a dry environment as well as in the ocean, to see if it lives up to the expectations.
CONCLUSION
The system consists of a motor with a worm gear, driving a planetary gear. The outer shell
of the planetary gear is used as the wind-up area for the bottom-connected wire.The
conclusion of the project should hopefully be a fully functioning buoy with this wind-up
system, which makes it more efficient and keeps it safe during a storm. If it all works, this
may become a supplement to the other sustainable energy sources such as wind and solar
power.
Effects of hive architecture on Apis mellifera health and productivity
Creators: name: Porter, Lucy
Publisher: name: The Australian National University
Year: 2016

description: This study examined the effects of hive architecture on European honeybee (Apis mellifera) colony health and productivity by comparing two hive designs. The Langstroth is the conventionally used hive design and the Warré is an alternative, bee-friendly design. Temporal changes in honeybee health and productivity were also observed independently of hive design. The past decade has seen significant declines in insect pollinators, such as the European honeybee, which are of significant economic and environmental value. Global colony losses are thought to be the result of various stressors, often heightened by the beekeeping practices used. Variables representing the internal climate of beehives, bee behaviour, colony growth and the condition of the immune system were observed to determine bee colony health and productivity. These measurements were recorded in four hives of each of the two designs over a four-month period in Perth, Western Australia. The study found colonies in Warré hives were healthier but less productive than those in Langstroth hives. Warré hives facilitated better thermoregulation and lower humidity levels. Colonies in Langstroth hives had increased immune responses, likely to be a consequence of stress associated with higher growth rates. No evidence was found to support existing theories that bees in Warré hives are less defensive. This may be because of the short study period or may be a result of management practices associated with Warré hives which were beyond the scope of this study. Defensiveness and immune response in all of the colonies decreased over the experimental period, thought to be associated with a decline in stress from the elevated levels during colony establishment. Because of the small sample size of this study, inference of the results is limited. However, this is the first study examining the effects of Warré hive design on A. mellifera. In providing support for the hypothesis that Warré hives are better for bee health, the author hopes that researchers are encouraged to further explore this subject. By exploring the challenges associated with studying hive design, this study has laid a foundation for much needed future studies. The information presented in this thesis allows beekeepers to make more informed decisions about their beekeeping practices.
X-ray emission from massive stars in Cyg OB2
Creators: name: Rauw, G.
name: Naze, Y.
name: Wright, N. J.
name: Drake, J. J.
name: Guarcello, M. G.
name: Prinja, R. K.
name: Peck, L. W.
name: Colombo, J. F. Albacete
name: Herrero, A.
name: Kobulnicky, H. A.
name: Sciortino, S.
name: Vink, J. S.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report on the analysis of the Chandra-ACIS data of O, B and WR stars in the young association Cyg OB2. X-ray spectra of 49 O-stars, 54 B-stars and 3 WR-stars are analyzed and for the brighter sources, the epoch dependence of the X-ray fluxes is investigated. The O-stars in Cyg\,OB2 follow a well-defined scaling relation between their X-ray and bolometric luminosities: log(Lx/Lbol) = -7.2 +/- 0.2. This relation is in excellent agreement with the one previously derived for the Carina OB1 association. Except for the brightest O-star binaries, there is no general X-ray overluminosity due to colliding winds in O-star binaries. Roughly half of the known B-stars in the surveyed field are detected, but they fail to display a clear relationship between Lx and Lbol. Out of the three WR stars in Cyg OB2, probably only WR144 is itself responsible for the observed level of X-ray emission, at a very low log(Lx/Lbol) = -8.8 +/- 0.2. The X-ray emission of the other two WR-stars (WR145 and 146) is most probably due to their O-type companion along with a moderate contribution from a wind-wind interaction zone.
description: Accepted for an ApJS Special Issue devoted to the Chandra Cygnus OB2 Legacy Survey
Threshold current of field-free perpendicular magnetization switching using anomalous spin-orbit torque
Creators: name: Zhang, TianYi
name: Wan, CaiHua
name: Han, XiuFeng
Publisher: name: arXiv
Year: 2023
Subjects: subject: Applied Physics (physics.app-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Spin-orbit torque (SOT) is a candidate technique in next generation magnetic random-access memory (MRAM). Recently, experiments show that some material with low-symmetric crystalline or magnetic structures can generate anomalous SOT that has an out-of-plane component, which is crucial in switching perpendicular magnetization of adjacent ferromagnetic (FM) layer in the field-free condition. In this work, we analytically derive the threshold current of field-free perpendicular magnetization switching using the anomalous SOT. And we numerically calculate the track of the magnetic moment in a FM free layer when an applied current is smaller and greater than the threshold current. After that, we study the applied current dependence of the switching time and the switching energy consumption, which shows the minimum energy consumption decreases as out-of-plane torque proportion increases. Then we study the dependences of the threshold current on anisotropy strength, out-of-plane torque proportion, FM free layer thickness and Gilbert damping constant, and the threshold current shows negative correlation with the out-of-plane torque proportion and positive correlation with the other three parameters. Finally, we demonstrate that when the applied current is smaller than the threshold current, although it cannot switch the magnetization of FM free layer, it can still equivalently add an effective exchange bias field H_{bias} on the FM free layer. The H_{bias} is proportional to the applied current J_{SOT}, which facilitates the determination of the anomalous SOT efficiency. This work helps us to design new spintronic devices that favor field-free switching perpendicular magnetization using the anomalous SOT, and provides a way to adjust the exchange bias field, which is helpful in controlling FM layer magnetization depinning.
Supplemental Material for Fraïsse and Sachdeva, 2020
Creators: name: Fraïsse, Christelle
name: Sachdeva, Himani
Publisher: name: GSA Journals
Year: 2020
Subjects: subject: Evolutionary Biology
subject: FOS: Biological sciences
subject: 60411 Population, Ecological and Evolutionary Genetics
subject: Genetics

description: Supplementary Code, Text, Figure, Table.
Assessing Post-Mining Woodland Rehabilitation Plans According to Best Practice Principles
Creators: name: Riddy, Cleo
Publisher: name: The Australian National University
Year: 2016

description: Adopting best ecological restoration planning practices provides a fundamental basis upon which successful ecological rehabilitation results can be achieved. In the Upper Hunter, New South Wales, post-mining woodland rehabilitation is generally a requirement for open-cut mining projects. However, while legal criteria for rehabilitation exist, they do not necessarily allow for successful woodland restoration. This research provides insight into the quality of rehabilitation plans for six mines in the Upper Hunter, and offers a point-in-time view into contemporary industry trends and why they may exist. Compliance with national and international best practice standards of post-mining rehabilitation plans was evaluated using a checklist content-analysis approach. This involved an application of a modified Lee & Colley Environmental Impact Statement Review Package, and the ecological restoration Planning and Design standards created by the Society for Ecological Restoration Australasia (SERA). Results revealed minimal inter-mine variation, but exposed substantial variation in compliance between criteria. Firms performed well in elementary criteria such as an identification of disturbance area, stakeholders, and impacts, but did not sufficiently justify mitigation and management decisions. Crucially, there was a significantly lower level of compliance to the SERA standards, reflecting a general oversight of ecological restoration principles. This is largely attributed to a failure within the political landscape to effectively incorporate best practice standards into legal requirements. It is thus recommended that a unified best practice framework approach is adopted into post-mining rehabilitation plans in order to reduce the risk of failure and ultimately allow for successful rehabilitation outcomes.
Canonical Momenta in Digitized SU(2) Lattice Gauge Theory: Definition and Free Theory
Creators: name: Jakobs, Timo
name: Garofalo, Marco
name: Hartung, Tobias
name: Jansen, Karl
name: Ostmeyer, Johann
name: Rolfes, Dominik
name: Romiti, Simone
name: Urbach, Carsten
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Hamiltonian simulations of quantum systems require a finite-dimensional representation of the operators acting on the Hilbert space H. Here we give a prescription for gauge links and canonical momenta of an SU(2) gauge theory, such that the matrix representation of the former is diagonal in H. This is achieved by discretising the sphere $S_3$ isomorphic to SU(2) and the corresponding directional derivatives. We show that the fundamental commutation relations are fulfilled up to discretisation artefacts. Moreover, we directly construct the Casimir operator corresponding to the Laplace-Beltrami operator on $S_3$ and show that the spectrum of the free theory is reproduced again up to discretisation effects. Qualitatively, these results do not depend on the specific discretisation of SU(2), but the actual convergence rates do.
description: typos corrected, matches published version in EPJC
Electronic nematic order in the normal state of strontium ruthenate
Creators: name: Russell, Ryan
name: Nair, Hari P.
name: Shen, Kyle M.
name: Schlom, Darrell G.
name: Harter, John W.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Despite significant achievements in characterizing the properties of Sr$_2$RuO$_4$ over the last three decades, the precise nature of its electronic ground state is still unresolved. In this work, we provide a missing piece of the puzzle by uncovering evidence of electronic nematic order in the normal state of Sr$_2$RuO$_4$, revealed by ultrafast time-resolved optical dichroism measurements of uniaxially strained thin films. This nematic order, whose domains are aligned by the strain, spontaneously breaks the four-fold rotational symmetry of the crystal. The temperature dependence of the dichroism resembles an Ising-like order parameter, and optical pumping induces a coherent oscillation of its amplitude mode. A microscopic model of intra-unit-cell nematic order is presented, highlighting the importance of Coulomb repulsion between neighboring oxygen $p$-orbitals. The existence of electronic nematic order in the normal state of Sr$_2$RuO$_4$ may have consequences for the form and mechanism of superconductivity in this material.
On the non-detection of gamma-rays from energetic millisecond pulsars -- dependence on viewing geometry
Creators: name: Guillemot, L.
name: Tauris, T. M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Millisecond pulsars (MSPs) and normal non-recycled pulsars are both detected in $γ$-rays. However, it appears that a much larger fraction of known energetic and nearby MSPs are detected in $γ$-rays, in comparison with normal pulsars, thereby making undetected $γ$-ray MSPs exceptions. In this paper, we demonstrate that the viewing angles (i.e. between the pulsar spin axis and the line of sight) are well described by the orbital inclination angles which, for binary MSPs with helium white dwarf companions, can be determined using the relationship between the orbital period and the white dwarf mass. We use the predicted viewing angles, in complement with values obtained from other constraints when available, to identify the causes of non-detection of energetic and nearby MSPs from the point of view of beaming geometry and orientation. We find evidence for slightly different viewing angle distributions, and postulate that energetic and nearby MSPs are mainly undetected in $γ$-rays simply because they are seen under unfavourable (i.e. small) viewing angles. We finally discuss the magnetic fields of $γ$-ray detected pulsars and show that pulsars which are efficient at converting their rotational energy into $γ$-ray emission may have overestimated dipolar magnetic field strengths.
description: 11 pages, 6 figures. MNRAS, in press. Updated to reflect changes made at the proof stage
Band engineered bilayer Haldane model: Evidence of multiple topological phase transitions
Creators: name: Mondal, Sayan
name: Basu, Saurabh
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We have studied the evolution of the topological properties of a band-engineered AB-stacked bilayer honeycomb structure in the presence of a Haldane flux. Without a Haldane flux, band engineering makes the band touching points (the so-called Dirac points) move towards each other and eventually merge into one at an intermediate $\mathbf{M}$ point in the Brillouin zone. Here the dispersion is linear along one direction and quadratic along the other. In the presence of a Haldane flux, the system acquires topological properties, and finite Chern numbers can be associated with the pairs of the conduction and the valence bands. The valence band closer to the Fermi level ($E_F$) possesses Chern numbers equal to $\pm2$ and $\pm1$, while the one further away from $E_F$ corresponds to Chern numbers $\pm1$. The conduction bands are associated with similar properties, except their signs are reversed. The Chern lobes shrink in the band-engineered model, and we find evidence of multiple topological phase transitions, where the Chern numbers discontinuously jump from $\pm2$ to $\mp2$, $\pm1$ to $\mp1$, $\pm1$ to $0$ to $\pm2$ and $\pm2$ to $\pm1$. These transitions are supported by the presence or absence of the chiral edge modes in a nanoribbon bilayer geometry and the vanishing of the plateau in the anomalous Hall conductivity. Different phases are further computed for different hopping amplitudes across the layers, which shows the shrinking of the Chern lobes for large interlayer tunneling.
title: Ablegereifeerkennung hochfester, laufender Faserteile mittels elektrischer Widerstandsmessung
Creators: name: Schmieder, Annett
name: Golder, Markus
Publisher: name: Wissenschaftliche Gesellschaft für Technische Logistik
Year: 2020
Subjects: subject: Ablegereife
subject: CBOS-Test
subject: Hochleistungsfaserseile
subject: discard criteria
subject: electrical resistance
subject: elektrischer Widerstand
subject: high-performance fibre ropes
subject: 620

description: Volume 2020, Issue 12
description: Steigende Anforderungen an ein energieeffizientes und ressourcenschonendes Betreiben von Fördermaschinen und deren Komponenten führten in den letzten Jahren zu wachsenden Innovationen hinsichtlich neuer Materialien, Technologien und Verfahren. Dies führte insbesondere beim Betreiben von Seiltrieben zu einem Umdenken von etablierten Stahldrahtseilen zu Hochleistungsfaserseilen. Die TU Chemnitz befasst sich u. a. mit der Entwicklung neuer Prüfmthoden zur Abschätzung der Lebensdauer und des Gebrauchszustandes von laufenden, hochfesten Faserseilen auf Basis von der elektrischen Widerstand-messung. Hierfür werden u. a. elektrisch leitfähige Drähte in ein Aramid-Seil integriert, um mittels der gemessenen Änderung des elektrischen Widerstands über die Seillebensdauer die Ablegereife des Seils bestimmen zu können. Mit zunehmender Seillebensdauer brechen die Drähte im Seilinneren und kontaktieren sich stets neu (nur bei unisolierten Drähten), so dass dies zur Erhöhung des elektrischen Widerstands führt.
description: In recent years the increasing requirements for energy-efficient and resource-saving operation of conveyor machines and their components have led to growing innovations in new materials, technologies and pro-cesses. This leads to a rethink of established steel wire ropes to high-performance fibre ropes, especially when operating rope drives. The TU Chemnitz re-search on the development of new test methods for es-timating the service life and condition of use of run-ning, high-strength fibre ropes based on the electrical resistance measurement. For this electrically conduc-tive wires are integrated in an aramid rope in order to be able to determine discard criteria of the rope by measuring the change in electrical resistance over the service life time of the rope. With increasing life time of the ropes, the wires inside the rope break and go into new contacts (only uninsulated wires), this leads to an increase in electrical resistance.