cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A microwave trap for atoms and molecules
Creators: name: Wright, Sidney Christopher
Publisher: name: Imperial College London
Year: 2019

description: Trapping particles is a key starting point for a range of physics experiments. The ability to confine, manipulate and interrogate a trapped species enables an invaluable degree of control and precision. Each trap offers different advantages and possibilities, and emerging experiments often demand different methods of trapping. This thesis describes a new three-dimensional microwave trap for atoms and molecules. Like an optical dipole trap, it can trap ground state polar molecules, but its depth and volume are larger by factors of 10^3 and 10^9 respectively. The experiment consists of a lithium oven, Zeeman slower, magneto-optical trap (MOT), a moving magnetic trap, and a high-quality Fabry-Perot cavity which serves as the microwave trap. Starting from a MOT of 1×10^8 lithium-7 atoms, the atomic cloud is cooled from a temperature of around 1mK to 41(1)μK with the recently developed Raman grey molasses method. Next, the population is optically pumped to a magnetically trappable state, and up to 85(2)% are loaded into a quadrupole magnetic trap. These atoms are then transferred to a moving magnetic trap and translated 600mm to the centre of the microwave cavity. After optimizing the transport to minimize atom heating and loss, we can produce samples of 2×10^7 atoms in the microwave chamber, at a phase space density of 3.58(15)×10^7. Finally, loading of the microwave trap is demonstrated and its basic properties studied. When the input power to the cavity is 610W, the electric field amplitude at the centre reaches roughly 20kV/cm. At this input power, centre-of-mass oscillation frequencies in the microwave trap were measured as 28.55(5)Hz along the axis of the cavity, and 8.81(8)Hz along the orthogonal direction. The observed lifetime was 1.76(12)s, limited by the vacuum quality. The atomic cloud expands and cools to 22(3)μK when loaded into the microwave trap, with a phase space density of 4(1)×10^7. This is consistent with adiabatic loading from the magnetic trap.
Design of a High-Performance High-Pass Generalized Integrator Based Single-Phase PLL
Creators: name: Kulkarni, Abhijit
name: John, Vinod
Publisher: name: arXiv
Year: 2016
Subjects: subject: Systems and Control (eess.SY)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Grid-interactive power converters are normally synchronized to the grid using phase-locked loops (PLLs). The performance of the PLLs is affected by the non-ideal conditions in the sensed grid voltage such as harmonics, frequency deviations and dc offsets in single-phase systems. In this paper, a single-phase PLL is presented to mitigate the effects of these non-idealities. This PLL is based on the popular second order generalized integrator (SOGI) structure. The SOGI structure is modified to eliminate of the effects of input dc offsets. The resulting SOGI structure has a high-pass filtering property. Hence, this PLL is termed as high-pass generalized integrator based PLL (HGI-PLL). It has fixed parameters which reduces the implementation complexity and aids in the implementation in low-end digital controllers. The HGI-PLL is shown to have least resource utilization among the SOGI based PLLs with dc cancelling capability. Systematic design methods are evolved leading to the design that limits the unit vector THD to within 1% for given non-ideal input conditions in terms of frequency deviation and harmonic distortion. The proposed designs achieve the fastest transient response. The performance of this PLL has been verified experimentally. The results are found to agree with the theoretical prediction.
description: 22 pages, 13 figures and 2 tables
Spin-orbit coupling effects on the stability of two competing structures in Pb/Si(111) and Pb/Ge(111)
Creators: name: Ren, Xiao-Yan
name: Kim, Hyun-Jung
name: Yi, Seho
name: Jia, Yu
name: Cho, Jun-Hyung
Publisher: name: arXiv
Year: 2016
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Using first-principles density-functional theory (DFT) calculations, we investigate the 4/3-monolayer structure of Pb on the Si(111) or Ge(111) surface within the two competing structural models termed the H$_3$ and T$_4$ structures. We find that the spin-orbit coupling (SOC) influences the relative stability of the two structures in both the Pb/Si(111) and Pb/Ge(111) systems: i.e., our DFT calculation without including the SOC predicts that the T$_4$ structure is energetically favored over the H$_3$ structure by $ΔE$ = 25 meV for Pb/Si(111) and 22 meV for Pb/Ge(111), but the inclusion of SOC reverses their relative stability as $ΔE$ = $-$12 and $-$7 meV, respectively. Our analysis shows that the SOC-induced switching of the ground state is attributed to a more asymmetric surface charge distribution in the H$_3$ structure, which gives rise to a relatively larger Rashba spin splitting of surface states as well as a relatively larger pseudo-gap opening compared to the T$_4$ structure. By the nudged elastic band calculation, we obtain a sizable energy barrier from the H$_3$ to the T$_4$ structure as ${\sim}$0.59 and ${\sim}$0.27 eV for Pb/Si(111) and Pb/Ge(111), respectively. It is thus likely that the two energetically competing structures can coexist at low temperatures.
description: 5 pages, 4 figures and 1 supplemental material
African edible insects as human food – a comprehensive review
Creators: name: Siddiqui, S.A.
name: Aidoo, O.F.
name: Ghisletta, M.
name: Osei-Owusu, J.
name: Saraswati, Y.R.
name: Bhardwaj, K.
name: Khalid, W.
name: Fernando, I.
name: Golik, A.B.
name: Nagdalian, A.A.
name: Lorenzo, J.M.
name: De Palo, P.
name: Maggiolino, A.
Publisher: name: Brill Online
Year: 2023
Subjects: classificationCode: 309999
subject: Other agricultural, veterinary and food sciences not elsewhere classified

description: In Africa, food insecurity seems to be a continual problem as a result of various factors such as extreme poverty, water scarcity, land degradation, and climate change. As a result, chronic hunger and malnutrition are still prevalent in many African countries. Consequently, the utilization of available and affordable natural food sources is needed to accommodate the energy and nutritional requirements of the people, such as edible insects. Edible insects are abundant and locally available throughout Africa, hence could be utilized as low-cost, nutritious, and sustainable foods. Around 500 species have been recorded in sub-Saharan Africa out of the 2,100 known edible insect species worldwide. The consumption of insects, also known as entomophagy, has been historically practiced by indigenous people of Africa. To date, edible insects are seen in Africa as a good opportunity, particularly for rural households, to improve their livelihoods at an economic and nutritional level. Edible insects are a great source of energy and nutrients - and their rearing only requires a small amount of water, land and feeding resources. Entomophagy may also serve as an ecologically sound control measure for insect pests, such as locusts, that periodically wreak havoc on agricultural fields. The combination of being a highly nutritious food source and having economic advantages made edible insects very attractive in all the African regions. Their promotions into the diet would ameliorate the well-being of the population and boost economic growth in Africa. However, African countries need local and regional legal frameworks to achieve smooth functioning of marketing of edible insects and their products.
On the limits to mobility in InAs quantum wells with nearly lattice-matched barriers
Creators: name: Shojaei, B.
name: Drachmann, A. C. C.
name: Pendharkar, M.
name: Pennachio, D. J.
name: Echlin, M. P.
name: Callahan, P. G.
name: Kraemer, S.
name: Pollock, T. M.
name: Marcus, C. M.
name: Palmstrøm, C. J.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The growth and the density dependence of the low temperature mobility of a series of two-dimensional electron systems confined to un-intentionally doped, low extended defect density InAs quantum wells with Al$_{1-x}$Ga$_{x}$Sb barriers are reported. The electron mobility limiting scattering mechanisms were determined by utilizing dual-gated devices to study the dependence of mobility on carrier density and electric field independently. Analysis of the possible scattering mechanisms indicate the mobility was limited primarily by rough interfaces in narrow quantum wells and a combination of alloy disorder and interface roughness in wide wells at high carrier density within the first occupied electronic sub-band. At low carrier density the functional dependence of the mobility on carrier density provided evidence of coulombic scattering from charged defects. A gate-tuned electron mobility exceeding 750,000 cm$^{2}$/Vs was achieved at a sample temperature of 2 K.
description: 23 pages, 7 figures, 1 table
Promoting information in the marketplace for financial services
Creators: name: Latimer., Paul Stephen
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.
an analytical study of of role of capital market in indian financial system
Creators: name: Mulla, M.G.
Publisher: name: figshare
Year: 2022
Subjects: Commercial services not elsewhere classified

description: capital market is a market for long term funds . it refers to all facility andinstitutional arrangement for borrowing and lending of medium term and long term fund . it deals not goods but concerned with rising of money capital for investement . in the capital market the supply of funds largely from individual savings , banks, insurance companies specialised financial agencies and government . the demand for long term capital comes mainly from private sectors industries and government .
Screening, developing and testing metal-organic frameworks for industrially relevant CO/N2 separation
Creators: name: Evans, Arwyn
Publisher: name: Imperial College London
Year: 2019

description: The demands to reduce the energy consumption and expenditure of industrial chemical separation processes provide great opportunities to develop and apply new technology and materials. As carbon monoxide (CO) is not a natural resource, its requirement for purification is important for its utilisation as a large-scale chemical reagent. Nitrogen (N2) impurity from the syngas source poses difficult separation challenges, which current CO purification technologies are trying to overcome to reduce capital and operating costs. Adsorption separation is an avenue that has the ability to improve the efficiency of this challenging separation, with metal-organic frameworks (MOFs) highlighted as a class of porous materials to achieve this. However, the number of studies on CO separation using MOFs that mimic industrial conditions remain scarce. This thesis presents an in-depth study of MOFs for CO/N2 separation with an industrial outlook, using tailored screening, design, synthesis, characterisation and testing of MOFs. An initial testing screening procedure found two MOFs to be the best performing for CO/N2 separation; Ni-MOF-74 and Co-MOF-74. Further in-depth testing was performed on these MOFs, studying the effect of N2 and CO2 impurity levels and recyclability under dynamic conditions. Dynamic testing of related structures provided greater insight into the role of the MOFs metal sites and porosity. These dynamic measurements also contributed useful kinetic data for future development of process scale modelling. Using the knowledge gained from the preliminary screening and in-depth testing, the CO/N2 separation performance of M-MOF-74 was enhanced by post-synthesis chemical modification (i.e. addition of Cu+ sites). Overall, this thesis assesses and improves the industrial viability of MOFs for CO/N2 separation.
Convection in Condensible-rich Atmospheres
Creators: name: Ding, Feng
name: Pierrehumbert, Raymond T.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Atmospheric and Oceanic Physics (physics.ao-ph)
subject: FOS: Physical sciences

description: Condensible substances are nearly ubiquitous in planetary atmospheres. For the most familiar case-water vapor in Earth's present climate-the condensible gas is dilute, in the sense that its concentration is everywhere small relative to the noncondensible background gases. A wide variety of important planetary climate problems involve nondilute condensible substances. These include planets near or undergoing a water vapor runaway and planets near the outer edge of the conventional habitable zone, for which CO2 is the condensible. Standard representations of convection in climate models rely on several approximations appropriate only to the dilute limit, while nondilute convection differs in fundamental ways from dilute convection. In this paper, a simple parameterization of convection valid in the nondilute as well as dilute limits is derived and used to discuss the basic character of nondilute convection. The energy conservation properties of the scheme are discussed in detail and are verified in radiative-convective simulations. As a further illustration of the behavior of the scheme, results for a runaway greenhouse atmosphere for both steady instellation and seasonally varying instellation corresponding to a highly eccentric orbit are presented. The latter case illustrates that the high thermal inertia associated with latent heat in nondilute atmospheres can damp out the effects of even extreme seasonal forcing.
description: Accepted for publication in ApJ with minor revisions
Multi-Skyrmions with orientational moduli
Creators: name: Canfora, Fabrizio
name: Tallarita, Gianni
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We analyze the mechanism of condensation of orientational moduli (as introduced in [25]) on multi-Skyrmionic configurations of the four-dimensional Skyrme model. The present analysis reveals interesting novel features. First of all, the orientational moduli tend to decrease the repulsive interactions between Skyrmions, the effect decreasing with the increase of the Baryon number. Moreover, in the case of a single Skyrmion, the appearance of moduli is energetically favorable if finite volume effects are present. Otherwise, in the usual flat topologically trivial case, it is not. In the low energy theory these solutions can be interpreted as Skyrmions with additional isospin degrees of freedom.
description: 19 pages; 5 figures; accepted for publication on Physical Review D
Spin-1 bosons in an external magnetic field and a three body interaction potential
Creators: name: Nabi, Sk Noor
name: Basu, Saurabh
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We perform a thorough study of the effect of an external magnetic field on a spin-1 ultracold Bose gas via mean field approach corresponding to the both signs of the spin dependent interaction. In contrast to some of the earlier studies, the magnetic field in our work is included through both the hopping frequencies (via Peierls coupling) and the zeeman interaction, thereby facilitating an explo- ration for competition between the two. The phase diagrams in the antiferromagnetic case shows that the Mott insulating (MI) phase with even particle occupancies is stable at low magnetic fields. At higher magnetic fields, due to a competition between the hopping and the zeeman interaction terms, the latter tries to destabilize the MI phase by suppressing the formation of singlet pairs, while the former tends to stabilize the MI phase. In the ferromagnetic case, the MI lobes become more stable with increasing flux strengths. Further inclusion of a three body interaction potential in order to ascertain its role on the phase diagram, we found that in absence of the magnetic field, the MI lobes become more stable compared to the superfluid (SF) phase and the location of the transition point for the MI-SF phase increases with increasing the three body interaction strength. A strong coupling perturbative calculation has also been done to provide a comparison with our mean field phase diagrams. Lastly, with inclusion of the external field, the insulating phases are found to be further stabilized by the three body interaction potential.
description: 8 pages
The generation of atmospheric gravity waves by orography and convection
Creators: name: Lane., Todd Philip
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.
Rashba-Edelstein Magnetoresistance in Metallic Heterostructure
Creators: name: Nakayama, Hiroyasu
name: Kanno, Yusuke
name: An, Hongyu
name: Tashiro, Takaharu
name: Haku, Satoshi
name: Nomura, Akiyo
name: Ando, Kazuya
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We report the observation of magnetoresistance originating from Rashba spin-orbit coupling (SOC) in a metallic heterostructure: the Rashba-Edelstein (RE) magnetoresistance. We show that the simultaneous action of the direct and inverse RE effects in a Bi/Ag/CoFeB trilayer couples current-induced spin accumulation to the electric resistance. The electric resistance changes with the magnetic-field angle, reminiscent of the spin Hall magnetoresistance, despite the fact that bulk SOC is not responsible for the magnetoresistance. We further found that, even when the magnetization is saturated, the resistance increases with increasing the magnetic-field strength, which is attributed to the Hanle magnetoresistance in this system.
A new model test in high energy physics in frequentist and Bayesian statistical formalisms
Creators: name: Kamenshchikov, Andrey
Publisher: name: arXiv
Year: 2016
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: A problem of a new physical model test given observed experimental data is a typical one for modern experiments of high energy physics (HEP). A solution of the problem may be provided with two alternative statistical formalisms, namely frequentist and Bayesian, which are widely spread in contemporary HEP searches. A characteristic experimental situation is modeled from general considerations and both the approaches are utilized in order to test a new model. The results are juxtaposed, what demonstrates their consistency in this work. An effect of a systematic uncertainty treatment in the statistical analysis is also considered.
Aspects of asset pricing in the Australian equity market : January 1974 to December 2000
Creators: name: Lambrick., Sydney J.
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.
Spiral magnetic order, non-uniform states and electron correlations in the conducting transition metal systems
Creators: name: Igoshev, P. A.
name: Timirgazin, M. A.
name: Arzhnikov, A. K.
name: Antipin, T. V.
name: Irkhin, V. Yu.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The ground-state magnetic phase diagram is calculated within the Hubbard and $s$-$d$ exchange (Kondo) models for square and simple cubic lattices vs. band filling and interaction parameter. The difference of the results owing to the presence of localized moments in the latter model is discussed. We employ a generalized Hartree-Fock approximation (HFA) to treat commensurate ferromagnetic (FM), antiferromagnetic (AFM), and incommensurate (spiral) magnetic phases. The electron correlations are taken into account within the Hubbard model by using the Kotliar-Ruckenstein slave boson approximation (SBA). The main advantage of this approach is a correct qualitative description of the paramagnetic phase: its energy becomes considerably lower as compared with HFA, and the gain in the energy of magnetic phases is substantially reduced.
description: 4 pages, Proc. of EASTMAG-2016, Krasnoyarsk, JMMM, 2017
Investigating the Potential of the Inter-IXP Multigraph for the Provisioning of Guaranteed End-to-End Services
Creators: name: Kotronis, Vasileios
name: Kloti, Rowan
name: Rost, Matthias
name: Georgopoulos, Panagiotis
name: Ager, Bernhard
name: Schmid, Stefan
name: Dimitropoulos, Xenofontas
Publisher: name: arXiv
Year: 2016
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: In this work, we propose utilizing the rich connectivity between IXPs and ISPs for inter-domain path stitching, supervised by centralized QoS brokers. In this context, we highlight a novel abstraction of the Internet topology, i.e., the inter-IXP multigraph composed of IXPs and paths crossing the domains of their shared member ISPs. This can potentially serve as a dense Internet-wide substrate for provisioning guaranteed end-to-end (e2e) services with high path diversity and global IPv4 address space reach. We thus map the IXP multigraph, evaluate its potential, and introduce a rich algorithmic framework for path stitching on such graph structures.
description: Proceedings of ACM SIGMETRICS '15, pages 429-430, 1/1/2015. arXiv admin note: text overlap with arXiv:1611.02642
Localization in an acoustic cavitation cloud
Creators: name: Miao, Boya
name: An, Yu
Publisher: name: arXiv
Year: 2016
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Using a nonlinear sound wave equation for a bubbly liquid in conjunction with an equation for bubble pulsation, we predict and experimentally demonstrate the appearance of a gap in the frequency spectrum of a sound wave propagating in a cavitation cloud comprising bubbles. For bubbles with an ambient radius of 100 μm, the calculations revealed that this gap corresponds to the phenomenon of sound wave localization. For bubbles with an ambient radius of 120 μm, this spectral gap relates to a forbidden band of the sound wave. In the experiment, we observed the predicted gap in the frequency spectrum in soda water; however, in tap water, no spectral gap was present because the bubbles were much smaller than 100 μm.
description: It is the first time to have observed sound wave localization in a cavitation cloud
Handreichung: "Kooperation von Portalen: Sondierung von Metadaten zur Herstellung von Interoperabilität"
Creators: name: Rörtgen, Steffen
Publisher: name: Zenodo
Year: 2023
Subjects: OER
Bildungsinfrastrukturen
Metadaten
Standards

description: Die Handreichung bietet einen Überblick über Metadatenstandards und ihre Relevanz beim Datenaustausch innerhalb der „Kooperation von Portalen: Sondierung von Metadaten zur Herstellung von Interoperabilität“. Neben einer Einführung in das Thema werden die Portale, ihre technischen Voraussetzungen sowie eine kurze allgemeine Einführung in das Thema “Datenaustausch” beschrieben. Standards, die für einen Datenaustausch infrage kommen, werden dargestellt und Notwendigkeiten zur Weiterentwicklung aufgezeigt. Außerdem werden Hinweise zur Implementierung gegeben. In der Zusammenfassung wird das Potential des Vorhabens hinsichtlich problemorientierter Suchzugänge aufgezeigt. Die Handreichung richtet sich dabei sowohl an Entscheider*innen, als auch Fachexpert*innen und Entwickler*innen und soll einen ersten Überblick über den momentanen Stand sowie aktuelle Entwicklungen in diesem Themenbereich bieten.
Casimir effect between ponderable media as modeled by the standard model extension
Creators: name: Martín-Ruiz, A.
name: Escobar, C. A.
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The CPT-even sector of the standard model extension amounts to extending Maxwell electrodynamics by a gauge invariant term of the form $- \frac{1}{4} (k _{F}) _{αβμν} F ^{αβ} F ^{μν}$, where the Lorentz-violating (LV) background tensor $(k _{F}) _{αβμν}$ possesses the symmetries of the Riemann tensor. The electrodynamics in ponderable media is still described by Maxwell equations in matter with modified constitutive relations which depend on the coefficients for Lorentz violation. We study the effects of this theory on the Casimir force between two semi-infinite ponderable media. The Fresnel coefficients characterizing the vacuum-medium interface are derived, and with the help of these, we compute the Casimir energy density. At leading-order in the LV coefficients, the Casimir energy density is numerically evaluated and successfully compared with the standard result. We also found a variety of intriguing effects, such as a non-trivial Kerr effect and the Casimir effect between two phases of the electromagnetic vacuum. We consider a bubble of Lorentz-symmetric (Maxwell) vacuum embedded in the infinite Lorentz-violating vacuum, and we calculate the Casimir energy at leading order, which in this case is quadratic in the LV coefficients. The Casimir force can be positive, zero, or negative, depending on the relative strengths between the LV coefficients.
description: 13 pages, 4 figures. arXiv admin note: text overlap with arXiv:1002.3481 by other authors
Analytic 1D Approximation of the Divertor Broadening S in the Divertor Region for Conductive Heat Transport
Creators: name: Nille, Dirk
name: Sieglin, Bernhard
name: Eich, Thomas
Publisher: name: arXiv
Year: 2016
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Topic is the divertor broadening $S$, being a result of perpendicular transport in the scrape-off layer and resulting in a better distribution of the power load onto the divertor target. Recent studies show a scaling of the divertor broadening with an inverse power law to the target temperature $T_t$, promising its reduction to be a way of distributing the power entering the divertor volume onto a large surface area. It is shown that for pure conductive transport in the divertor region the suggested inverse power law scaling to $T_t$ is only valid for high target electron temperatures. For decreasing target temperatures ($T_t < 20\,$eV) the increase of $S$ stagnates and the conductive model results in a finite value of $S$ even for zero target temperature. It is concluded that the target temperature is no valid parameter for a power law scaling, as it is not representative for the entire divertor volume. This is shown in simulations solving the 2D heat diffusion equation, which is used as reference for an analytic 1D model describing the divertor broadening along a field line solely by the ratio of the perpendicular to the parallel diffusivity. By assuming the temperature dependence of these two quantities an integral form of $S$ is derived, relying only on the temperature distribution along the separatrix between X-point and target. Integration along the separatrix results in an approximation for $S$, being in agreement with the 2D simulations. This model is also applicable to scenarios including heat losses, e.g. due to radiation. Convective transport can not be neglected for high recycling conditions, hence the derived expression for $S$ is not expected to hold. However, based on the non-vanishing parallel transport, respective the finite parallel transport time, the divertor broadening is expected to reach a finite value.
description: Draft
Improving option pricing with the product constrained hybrid neural network and booting
Creators: name: Lajbcygier., Paul Richard
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.
Quality factor enhancement of Nano electromechanical systems by capacitive driving beyond the resonance
Creators: name: Barois, T
name: Perisanu, S
name: Poncharal, P
name: Vincent, Philippe
name: Ayari, A
Publisher: name: arXiv
Year: 2016
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Classical Physics (physics.class-ph)
subject: FOS: Physical sciences

description: Nano electromechanical systems are considered as ultra sensitive devices for mass and force detection. Capacitive actuation is widely used in these devices but is known to degrade the quality factor of the resonator due to DC electrostatic damping. We report the enhancement of the quality factor of SiC vibrating nanowires detected nano optomechanically and electrically by applying an AC capacitive driving at a frequency above both the resonance frequency and the electrical cutoff frequency. Self-oscillations are demonstrated for optimal conditions. We developed an analytical model of the phenomenon and showed that it can lead to an improvement of the force sensitivity. * anthony.ayari@univ-lyon1.fr 1
Topographical study of TiO2 nanostructure surface for photocatalytic hydrogen production
Creators: name: Cha, Gihoon
name: Lee, Kiyoung
name: Yoo, JeongEun
name: Killian, Manuela S.
name: Schmuki, Patrik
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In the present work we investigate the photocatalytic hydrogen production (water splitting) activity of different Pt loaded TiO2 nanotube layers. Therefore, we fabricate free standing membranes and fix them in four different configurations: top up (with initiation layer grass or without) and bottom up (bottom closed or open), then decorate the tubes with various amounts of Pt and measure the open-circuit photocatalytic H2 production rate. We find a strong influence of the configuration with the open top morphology showing the highest photocatalytic hydrogen production efficiency, these nanotubes yield 3.5 times more H2 than the least efficient structure (bottom closed). The work therefore provides valuable guidelines for optimizing TiO2 nanotube layers for photocatalytic applications.
Understanding inter-organisational systems adoption : the case of efficient consumer response
Creators: name: Kurnia., Sherah
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.
title: The Construction of an Essentialist ‘Mixed-Race’ Identity in the Anglophone Caribbean Novel 1914-1998
Creators: name: Persuad, Melissa
Publisher: name: Goldsmiths, University of London
Year: 2000

description: This thesis examines the portrayal of the 'mixed-race' person in twentieth-century Caribbean literature. The premise that their portrayal has been limited by essentialised racial stereotypes is investigated and the conclusion is reached that these stereotypes have been founded in nineteenth century theories of racial hybridity. The development of this racial theory is explored and reveals that the concept of hybridity was generated through imperialistic and colonial endeavours to support a policy of racial subjugation predicated by European economic desire to exploit non-white peoples. In the Caribbean this took the form of African slavery, and the need to keep the 'races' separate and unequal under this system led to the demonisation of 'mixed-race' people of African and European descent. Despite attempts to prevent the proliferation of a 'mixed-race' population, their increasing numbers led to further plantocratic strategies to divide the 'mixed-race' and black population in order to maintain white socio-economic supremacy. This thesis finds that the literary construction of 'mixed-race' identity has been grounded in a biologised fallacy of `hybridity'. Despite recent attempts to appropriate the term `hybridity' as a cultural metaphor, hybridity itself remains entrenched in nineteenth century notions of absolute racial difference. The biological concept of `mixed-race' degeneracy coupled with the white engineered racial divisions within Caribbean society has left the 'mixed-race' person in an ambivalent position. Although the Caribbean novel has spearheaded an awareness of European colonial oppression and has challenged racial stereotypes of black people, offering positive portrayals of Afro-Caribbean identity, the portrayal of the 'mixedrace' person remains limited. The development of indigenous and, subsequently, diasporic Caribbean literature has tended to perpetuate the stereotype of the deviant `mixed-race' person, previously popularised in the nineteenth century European novel on the Caribbean.
Trafiksystemer og mobilitetsdesign
Creators: name: CMUS, Forskere Fra
Publisher: name: Proceedings from the Annual Transport Conference at Aalborg University
Year: 2013

description: Workshop ved Trafikdage 2013, tirsdag den 27. august kl. 13.20-14.50 Arrangeret af Center for Mobilitet og Urbane Studier, CMUS, AAU
description: Proceedings from the Annual Transport Conference at Aalborg University, Vol. 1 Núm. 1 (2013): Proceedings from the Annual Transport Conference at Aalborg University
Grøn transport som vækstmotor
Creators: name: Overgaard, Lars
name: Flader, Lærke
name: Søgaard, Julie
name: Hawaleska, Bent Erik
name: Mortensgaard, Aksel
Publisher: name: Proceedings from the Annual Transport Conference at Aalborg University
Year: 2013

description: Workshop: ”Grøn transport som vækstmotor”
description: Proceedings from the Annual Transport Conference at Aalborg University, Vol. 1 Núm. 1 (2013): Proceedings from the Annual Transport Conference at Aalborg University
Videns anvendelse og indflydelse i dansk hastighedspolitik
Creators: name: Sørensen, Claus Hedegaard
Publisher: name: Proceedings from the Annual Transport Conference at Aalborg University
Year: 2013

description: Hastighed er af afgørende betydning for trafiksikkerhed, og høj hastighed er anerkendt som en væsentlig udfordring for at reducere antal dræbte og tilskadekomne på vejene. Forskning i trafiksikkerhed handler ofte om hastighed, men anvender sjældent et politologisk perspektiv. I dette paper anvendes imidlertid et sådant perspektiv i et studie af formel videns anvendelse og indflydelse i danske, nationale politiske beslutninger om vejhastighed. En case-studie metode er anvendt og Folketingets beslutning i 2003 om at øge hastighedsgrænsen på motorvejene og en beslutning fra 2004 om at indføre klip i kørekortet ved bl.a. visse overskridelser af hastighedsgrænserne er analyseret. Empirien består i begge cases af dokumenter fra lovgivningsprocessen, andre offentligt tilgængelige rapporter og notater, nyhedsartikler, sagsakter fra involverede ministerier og kvalitative interviews. I begge cases analyseres brugen af et bestemt viden- dokument. Viden-dokumenterne anvendes i det lovforberedende arbejde og i det ene tilfælde citeres dokumentet flittigt under Folketingets behandling. Anderledes med dokumenternes indflydelse på beslutningerne. Det ene dokument influerer formentlig embedsmændende arbejde med lovforslaget, mens ingen af dokumenterne ser ud til at have indflydelse på den politiske behandling af lovforslagene. Viden- dokumenterne ændrer næppe nogle politikeres synspunkter. Viden-dokumenterne spiller i den ene case roller, vi betegner som ’viden som instrument’ og ’viden som argument’ og i den anden case en rolle vi betegner ’viden som rationalisering’. En udbredt konsensus om trafiksikkerhed som central værdi i hastighedspolitikken bidrager til forklare de observerede viden-roller.
description: Proceedings from the Annual Transport Conference at Aalborg University, Vol. 1 Núm. 1 (2013): Proceedings from the Annual Transport Conference at Aalborg University
Vejkarakteristika og ulykkestæthed
Creators: name: Andersen, Camilla Sloth
name: Olesen, Anne Vingaard
name: Bolet, Lars
Publisher: name: Proceedings from the Annual Transport Conference at Aalborg University
Year: 2013

description: Udpegning, analyse og udbedring af sorte pletter på det danske vejnet har været en af de primære aktiviteter i det stedbestemte trafiksikkerhedsarbejde de sidste 40 år. Imidlertid er sortpletarbejdet med årene blevet vanskeligere af to grunde: Dels er de mest markante sorte pletter identificeret og afhjulpet, de resterende er mindre markante og effekten af foranstaltninger mindre (SWOV, 2010). Dels baseres sortpletarbejde på en stadig mindre del af det reelle antal trafikulykker. Hvad skal tage over i stedet for det traditionelle sortpletarbejde? Som et delprojekt under et forskningsprojekt med det formål at udvikle en ikke-ulykkesbaseret metode til udpegning af risikolokaliteter på det sekundære tosporede vejnet i Danmark analyseres hvilke vejkarakteristika, der er associeret med ulykkesrisiko på det sekundære tosporede vejnet i Danmark. Analysen er baseret på ulykkesdata fra perioden 2004-2011 samt data om et 180 km langt vejnet i Aalborg Kommune. De 180 km vej er fordelt på 145 strækninger, og for hver strækning findes data om årsdøgnstrafik, kørebanebredde, kantbanebredde, bredden af blød rabat, krydstæthed, adgangstæthed, tilstedeværelse af cykelsti samt data om omfanget af længdemarkering. Analysen er foretaget som en Poissonregression med antal ulykker som afhængig variabel og strækningslængde som offset variabel for at tage højde for strækningernes varierende længde. Resultaterne viser, at der er en signifikant sammenhæng mellem ulykkestæthed og årsdøgnstrafik, krydstæthed samt adgangstæthed. Dertil konkluderes det, at resultaterne er interessante og vil indgå i en lignende analyse af et større vejnet.
description: Proceedings from the Annual Transport Conference at Aalborg University, Vol. 1 Núm. 1 (2013): Proceedings from the Annual Transport Conference at Aalborg University
Offentlige udgifter ved trafikulykker
Creators: name: Jespersen, Svend Torp
Publisher: name: Proceedings from the Annual Transport Conference at Aalborg University
Year: 2013

description: Vejdirektoratet har bedt COWI A/S om at beregne de gennemsnitlige offentlige udgifter ved trafikulykker fordelt på forskellige offentlige myndigheder. Det blev aftalt, at de beregnede udgifter skulle omfatte føl- gende: sygedagpenge, førtidspension, pleje, genoptræning, hjælpemidler, behandling i akutfase samt ef- terbehandling og genoptræning på sygehus. Der blev indgået kontrakt om opgaven mellem COWI A/S og Vejdirektoratet i september 2012. Analyserne og afrapporteringen er udarbejdet af Karsten Bjerring, Marie Jakobsen og Svend Torp Jespersen (projektleder) fra COWI A/S. Projektholdet vil gerne takke Vejdirektoratets styregruppe: Lis Hillo Lørup, Winnie Hansen og Mette Engelbrecht Larsen for støtte og værdifulde kommentarer i projektforløbet. Des- uden har PTU ved Philip Rendtorff og Mette Lundstrøm Jørgensen været behjælpelige med at indsamle cases og vurdere udgifter ved pleje, hjælpemidler og genoptræning. Endelig har Aabenraa Kommune ved Hanne Mette Kjær, Trine Kragelund Jensen, Morten Jessen-Hansen, Katrine Andersen og Henrik Bützau Hasling givet værdifuld sparring i forhold til at vurdere realismen i analyserne og resultaterne. Endelig har Birger Villadsen, Jørgen Jordal Jørgensen, Mattias Enggaard og Stine Bendsen været behjælpelige som CO- WI-kvalitetskontrol. Ansvaret for eventuelle fejl, misforståelser og udeladelser ligger hos forfatterne af nærværende rapport.
description: Proceedings from the Annual Transport Conference at Aalborg University, Vol. 1 Núm. 1 (2013): Proceedings from the Annual Transport Conference at Aalborg University
Ny metode for beregning av effekten av fartsreduserende tiltak – eksempel SATK
Creators: name: Olesen, Svenn Fjeld
Publisher: name: Proceedings from the Annual Transport Conference at Aalborg University
Year: 2013

description: Vi studerer effekten fartsendringer har på personskadeulykker. Den velkjente Powermodellen sier at en gitt prosentuell nedgang i gjennomsnittsfart gir en bestemt forventet prosentuell nedgang i ulykker, uavhengig av hva initial gjennomsnittsfart er. I en helt ny artikkel viser Elvik basert på alle tilgjengelige undersøkelser at en eksponentialmodell passer minst like bra som Powermodellen. Eksponentialmodellen viser seg å ha en helt annen egenskap, like enkel å formulere, nemlig at en gitt nominell nedgang i gjennomsnittsfart gir en bestemt forventet prosentuell nedgang i ulykker uavhengig av hva initial gjennomsnittsfart er. I denne artikkelen bruker vi konsekvent relativ risiko i forhold til fartsgrensen, eksemplifisert til 80 km/t. Alle beregninger av risiko innen en fartsfordeling og mellom fartsfordelinger før og etter fartsreduserende tiltak vil være allmenngyldige. Ved bruk av eksponentialmodellen vil den totale relative risikoen i en fartsfordeling med gjennomsnitt være . For et vilkårlig fartsintervall med gjennomsnittsfart er den relative risikoen, Rj , lik . Vi viser at det multiplikative risikobidraget fra intervallet er , der nj er antall målinger i intervallet, N er totalt antall målinger og nj/N dermed er andel målinger i intervallet. Det vil si at når vi deler opp skalaen i M ikke-overlappende og tilstøtende intervall så har vi den svært anvendelige sammenhengen Den totale relative risikoen er produktet av et risikobidrag fra hvert intervall, hvor risikobidraget er den relative risikoen til intervallet vektet ved å opphøye i andel målinger i intervallet. Ettersom Powermodellen ikke har slike multiplikative egenskaper, har ikke denne faktoriseringen vært mulig. Dette gir oss nøyaktig informasjon om «risikoprofil» i fartsfordelinger, hva risikobidraget er blant de som kjører mellom 80 og 90 km/t, blant de over 100 km/t og så videre. Vi kan også studere bidraget fra det som defineres som ekstremhastigheter.
description: Proceedings from the Annual Transport Conference at Aalborg University, Vol. 1 Núm. 1 (2013): Proceedings from the Annual Transport Conference at Aalborg University
Effekt af elektronisk stabilitetskontrol på personbilers eneuheld
Creators: name: Hels, Tove
name: Lyckegaard, Allan
name: Bernhoft, Inger Marie
Publisher: name: Proceedings from the Annual Transport Conference at Aalborg University
Year: 2013

description: Elektronisk stabilitetskontrol (ESC) blev første gang introduceret i personbiler i den danske bilpark i 1997, og som følge af bilfabrikanters stigende fokus på sikkerhedsudstyr har andelen af biler der sælges med ESC været stigende i årene efter 1997. Formålet med dette studie er at estimere effekten af ESC for eneuheld i forhold til andre typer uheld. Datagrundlaget for analysen af effekten er politiregistrerede og andre data (herunder tilstedeværelsen af ESC) om personbiler i uheld i perioden 2004-2011. Materialet rummer data for 13.636 uheldsramte biler. Alle observationer har baggrundsvariable om karakteristika om føreren, køretøjet, vejen og omgivelserne i forbindelse med uheldet. To metoder blev anvendt til at beregne effekten af ESC: En enkel ukorrigeret metode og logistisk regression. Begge metoder estimerer risikoen for at komme i eneuheld i form af en odds ratio. Den enkle, ukorrigerede metode anvender i beregningen af risikoen kun informationer om tilstedeværelsen af ESC i køretøjet. Det korrigerede estimat korrigerer risikoen for at komme i eneuheld med en række baggrundsvariable. På denne måde fås et mere ’rent’ estimat af effekten af ESC på eneuheld, da især førerens karakteristika (kørestil) har indflydelse på risikoen for at komme i eneuheld. Resultater: Den enkle, ukorrigerede odds ratio blev estimeret til 0,40 (95 %-KI: 0,34-0,47), svarende til, at sandsynligheden for at okmme i eneuheld i en bil med ESC installeret er 0,40 gange så stor som sandsynligheden for at komme i eneuheld i en bil uden ESC installeret. Den korrigerede odds ratio blev estimeret til 0,66 (0,52-0,83), hvilket er på linje med internationale resultater. Det er forventeligt, at det korrigerede odds ratio-estimat er større end det ukorrigerede, da der i førstnævnte til en vis grad er korrigeret for mindre risikobetonet kørestil i biler med ESC installeret.
description: Proceedings from the Annual Transport Conference at Aalborg University, Vol. 1 Núm. 1 (2013): Proceedings from the Annual Transport Conference at Aalborg University
Er det mulig at flertallet av førere er sikrere enn gjennomsnittsføreren?
Creators: name: Elvik, Rune
Publisher: name: Proceedings from the Annual Transport Conference at Aalborg University
Year: 2013

description: Bakgrunn: Det er utført flere studier der et flertall av bilførere uttaler at de er sikrere enn gjennomsnittsføreren. Det har vært hevdet at dette umulig kan være tilfellet og viser at mange førere overvurderer sin sikkerhet. Formål: Formålet med denne artikkelen er å vise at det matematisk er fullt mulig at et flertall av førere er sikrere enn gjennomsnittsføreren. Metode: Flere datasett som oppgir hvordan ulykker er fordelt i en gruppe av bilførere i to perioder er benyttet. Denne typen data gjør det mulig å bruke opplysninger om hvordan ulykkene fordelte seg mellom førere i den første perioden til å beregne et langsiktig, forventet ulykkestall per fører i den andre perioden. Empirisk Bayes metode er benyttet til disse beregningene. Resultater: Beregning av langsiktig, forventet ulykkestall med empirisk Bayes metode gir i det store og hele meget presise resultater. Dette gjør det mulig å si hvordan førere fordeler seg etter langsiktig, forventet ulykkestall. I alle datasett som er undersøkt har flertallet av førere et lavere forventet ulykkestall per fører enn gjennomsnittet for alle førere. Andelen førere som er sikrere enn gjennomsnittet varierer fra noe over 60 prosent til etter oppunder 90 prosent. Diskusjon: Blant vanlige bilførere vil det normalt være slik at flertallet av førere er sikrere enn gjennomsnittsføreren. Dette innebærer ikke at alle førere som sier at de er sikrere enn gjennomsnittsføreren har rett et slikt utsagn, men det betyr at mange av dem kan ha rett i det. Det er bemerkelsesverdig at ingen av de studier som har spurt førere om hvor sikre de tror de er, har innhentet ulykkesdata for de samme førere for å bedømme hvor korrekte førernes oppfatning av egen sikkerhet er. Annen artikkel: Denne artikkelen overlapper i betydelig grad med en artikkel publisert i Accident Analysis and Prevention (Rune Elvik: Can it be true that most drivers are safer than the average driver? Accident Analysis and Prevention, 59, 301-308, 2013).
description: Proceedings from the Annual Transport Conference at Aalborg University, Vol. 1 Núm. 1 (2013): Proceedings from the Annual Transport Conference at Aalborg University