cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Lifshitz metric with hyperscaling violation from NS5-Dp states in string theory
Creators: name: Dey, Parijat
name: Roy, Shibaji
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In our previous papers we have shown how Lifshitz-like space-time (space-time having a Lifshitz scaling along with a hyperscaling violation) can arise by taking near horizon limits of certain intersecting solutions (F-string with D$p$-branes and also with two D-branes) of string theory. In this paper we construct intersecting bound state solutions in the form of NS5-D$p$-branes (with $1\leq p \leq 6$) of type II string theories. These are 1/4 BPS and threshold bound states unlike the known NS5-D$p$ bound states which are 1/2 BPS and non-threshold. We show that the near horizon limits of these solutions also lead to Lifshitz-like space-time with the dynamical scaling exponent $z=0$ and the hyperscaling violation exponent $θ=9-p$. The spatial dimension of the boundary theory is $d=7-p$. The dilatons in these theories are not constant in general (except for $p=5$) and therefore produce RG flows. So, we also consider the strong coupling phases of these theories and find that these phases also have similar Lifshitz-like structures, except for $p=2$, where it has an AdS$_3$ structure.
description: 12 pages, no figure; v2: Added references; v3: more clarifications added, version to appear in Phys. Lett. B
ABJ Triality: from Higher Spin Fields to Strings
Creators: name: Chang, Chi-Ming
name: Minwalla, Shiraz
name: Sharma, Tarun
name: Yin, Xi
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We demonstrate that a supersymmetric and parity violating version of Vasiliev's higher spin gauge theory in AdS$_4$ admits boundary conditions that preserve ${\cal N}=0,1,2,3,4$ or 6 supersymmetries. In particular, we argue that the Vasiliev theory with U(M) Chan-Paton and ${\cal N}=6$ boundary condition is holographically dual to the 2+1 dimensional $U(N)_k\times U(M)_{-k}$ ABJ theory in the limit of large $N,k$ and finite $M$. In this system all bulk higher spin fields transform in the adjoint of the U(M) gauge group, whose bulk t'Hooft coupling is $\frac{M}{N}$. Analysis of boundary conditions in Vasiliev theory allows us to determine exact relations between the parity breaking phase of Vasiliev theory and the coefficients of two and three point functions in Chern-Simons vector models at large $N$. Our picture suggests that the supersymmetric Vasiliev theory can be obtained as a limit of type IIA string theory in AdS$_4\times \mathbb{CP}^3$, and that the non-Abelian Vasiliev theory at strong bulk 't Hooft coupling smoothly turn into a string field theory. The fundamental string is a singlet bound state of Vasiliev's higher spin particles held together by U(M) gauge interactions. This is illustrated by the thermal partition function of free ABJ theory on a two sphere at large $M$ and $N$ even in the analytically tractable free limit. In this system the traces or strings of the low temperature phase break up into their Vasiliev particulate constituents at a U(M) deconfinement phase transition of order unity. At a higher temperature of order $T=\sqrt{\frac{N}{M}}$ Vasiliev's higher spin fields themselves break up into more elementary constituents at a U(N) deconfinement temperature, in a process described in the bulk as black hole nucleation.
description: New section added, typos corrected, reference added
Optimal desired trajectories for local area networks of drones
Creators: name: Rajasinghege, Sandaruvan
Publisher: name: CQUniversity
Year: 2022
Subjects: classificationCode: 460608
subject: Mobile computing
classificationCode: 460609
subject: Networking and communications

description: Mini and micro Unmanned Aerial Vehicles (UAVs) can provide a better service in commercial applications if they are used in networks. Flying Ad hoc Networks (FANETs) and Internet of Drones (IoD) are UAV networks where many UAVs belonging to different users coexist, and there are several routing protocols which have been developed to maintain communication in such networks. However, in application scenarios where only a limited number of UAV nodes are available, some communication paths cannot be established if an existing neighbour UAV node moves away and a new neighbour is not within reach. As response to this problem, LANs of Drones (LoDs) have been recently introduced to be used in these scenarios. A LoD is a star-connected relay network where the UAVs are connected serially in branches, in contrast to FANETs and IoDs. In a LoD, the movements of UAVs should be controlled in order to maintain the communication links. This thesis mainly focusses on the determination of desired trajectories of UAV nodes in a LoD when the leading UAV has to move to a given target. The trajectories were optimized to minimise the task completion time or the total energy consumed. Mathematical constraints were applied to the optimization problem in order to maintain the distances between the UAV nodes and between the closest UAV and the Ground Station (GS) so that they were less than the Wi-Fi communication distance. MATLAB simulations were used to verify the desired trajectory optimization method. Additional constraints were introduced to the optimization problem to derive the desired trajectories of UAVs in the presence of obstacles and image processing techniques were used to derive constraints of a realistic obstacle using an image of an obstacle. In addition, a secondary outcome of this research study was the determination of the minimum number of UAVs required to perform a given task and the minimum number of UAVs was determined for four categories of tasks. Finally, a purpose of this research was to determine the number of branches required in a LoD to obtain a given level of reliability. The reliability of a LoD was estimated by varying the number of branches and number of UAVs in each branch.
Titel
Creators: name: Redaktion, Die
Publisher: name: Funde und Ausgrabungen im Bezirk Trier
Year: 2019

description: -
description: Funde und Ausgrabungen im Bezirk Trier, Bd. 40 (2008): Funde und Ausgrabungen im Bezirk Trier : Aus der Arbeit des Rheinischen Landesmuseums Trier
Finding Rare AGN: X-ray Number Counts of Chandra Sources in Stripe 82
Creators: name: LaMassa, Stephanie M.
name: Urry, C. Megan
name: Glikman, Eilat
name: Cappelluti, Nico
name: Civano, Francesca
name: Comastri, Andrea
name: Treister, Ezequiel
name: Arifin
name: Boehringer, Hans
name: Cardamone, Carie
name: Chon, Gayoung
name: Kephart, Miranda
name: Murray, Stephen S.
name: Richards, Gordon
name: Ross, Nic
name: Rozner, Joshua S.
name: Schawinski, Kevin
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present the first results of a wide area X-ray survey within the Sloan Digital Sky Survey (SDSS) Stripe 82, a 300 deg$^2$ region of the sky with a substantial investment in multi-wavelength coverage. We analyzed archival {\it Chandra} observations that cover 7.5 deg$^2$ within Stripe 82 ("Stripe 82 ACX"), reaching 4.5$σ$ flux limits of 7.9$\times10^{-16}$, 3.4$\times10^{-15}$ and 1.8$\times10^{-15}$ erg s$^{-1}$ cm$^{-2}$ in the soft (0.5-2 keV), hard (2-7 keV) and full (0.5-7 keV) bands, to find 774, 239 and 1118 X-ray sources, respectively. Three hundred twenty-one sources are detected only in the full band and 9 sources are detected solely in the soft band. Utilizing data products from the {\it Chandra} Source Catalog, we construct independent Log$N$-Log$S$ relationships, detailing the number density of X-ray sources as a function of flux, which show general agreement with previous {\it Chandra} surveys. We compare the luminosity distribution of Stripe 82 ACX with the smaller, deeper CDF-S + E-CDFS surveys and with {\it Chandra}-COSMOS, illustrating the benefit of wide-area surveys in locating high luminosity AGN. We also investigate the differences and similarities of X-ray and optical selection to uncover obscured AGN in the local Universe. Finally, we estimate the population of AGN we expect to find with increased coverage of 100 deg$^2$ or 300 deg$^2$, which will provide unprecedented insight into the high redshift, high luminosity regime of black hole growth currently under-represented in X-ray surveys.
description: Accepted for publication in MNRAS, 15 pages, 6 Figures, 2 Tables
flap: A Deterministic Parser with Fused Lexing
Creators: name: Yallop, Jeremy
name: Xie, Ningning
name: Krishnaswami, Neel
Publisher: name: arXiv
Year: 2023
Subjects: subject: Programming Languages (cs.PL)
subject: FOS: Computer and information sciences

description: Lexers and parsers are typically defined separately and connected by a token stream. This separate definition is important for modularity and reduces the potential for parsing ambiguity. However, materializing tokens as data structures and case-switching on tokens comes with a cost. We show how to fuse separately-defined lexers and parsers, drastically improving performance without compromising modularity or increasing ambiguity. We propose a deterministic variant of Greibach Normal Form that ensures deterministic parsing with a single token of lookahead and makes fusion strikingly simple, and prove that normalizing context free expressions into the deterministic normal form is semantics-preserving. Our staged parser combinator library, flap, provides a standard interface, but generates specialized token-free code that runs two to six times faster than ocamlyacc on a range of benchmarks.
description: PLDI 2023 with appendix
Observation of the Larmor and Gouy Rotations with Electron Vortex Beams
Creators: name: Guzzinati, Giulio
name: Schattschneider, Peter
name: Bliokh, Konstantin
name: Nori, Franco
name: Verbeeck, Jo
Publisher: name: arXiv
Year: 2012
Subjects: subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Electron vortex beams carrying intrinsic orbital angular momentum (OAM) are produced in electron microscopes where they are controlled and focused using magnetic lenses. We observe various rotational phenomena arising from the interaction between the OAM and magnetic lenses. First, the Zeeman coupling, proportional to the OAM and magnetic field strength, produces an OAM-independent Larmor rotation of a mode superposition inside the lens. Second, hen passing through the focal plane, the electron beam acquires an additional Gouy phase dependent on the absolute value of the OAM. This brings about the Gouy rotation of the superposition image proportional to the sign of the OAM. A combination of the Larmor and Gouy effects can result in the addition (or subtraction) of rotations, depending on the OAM sign. This behaviour is unique to electron vortex beams and has no optical counterpart, as Larmor rotation occurs only for charged particles. Our experimental results are in agreement with recent theoretical predictions.
description: 5 pages, 5 figures
State Classification via a Random-Walk-Based Quantum Neural Network
Creators: name: Wang, Lu-Ji
name: Lin, Jia-Yi
name: Wu, Shengjun
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In quantum information technology, crucial information is regularly encoded in different quantum states. To extract information, the identification of one state from the others is inevitable. However, if the states are non-orthogonal and unknown, this task will become awesomely tricky, especially when our resources are also limited. Here, we introduce the quantum stochastic neural network (QSNN), and show its capability to accomplish the binary discrimination of quantum states. After a handful of optimizing iterations, the QSNN achieves a success probability close to the theoretical optimum, no matter whether the states are pure or mixed. Other than binary discrimination, the QSNN is also applied to classify an unknown set of states into two types: entangled ones and separable ones. After training with four samples, it can classify a number of states with acceptable accuracy. Our results suggest that the QSNN has the great potential to process unknown quantum states in quantum information.
Neutron scattering sum rules, symmetric exchanges, and helicoidal magnetism in MnSb$_2$O$_6$
Creators: name: Chan, E.
name: Lane, H.
name: Pásztorová, J.
name: Songvilay, M.
name: Johnson, R. D.
name: Downie, R.
name: Bos, J-W. G.
name: Rodriguez-Rivera, J. A.
name: Cheong, S. -W.
name: Ewings, R. A.
name: Qureshi, N.
name: Stock, C.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: MnSb$_{2}$O$_{6}$ is based on the noncentrosymmetric $P321$ space group with magnetic Mn$^{2+}$ ($S={5/2}$, $L\approx 0$) spins ordering below $T_{\mathrm{N}}=12$ K in a helicoidal structure. The ground state magnetic structure, expected to be built and originate from 7 Heisenberg exchange constants, has been shown to be coupled to the underlying crystallographic chirality with polar domain switching being reported. We apply neutron spectroscopy to extract these symmetric exchange constants. Given the high complexity of the magnetic exchange network, crystallographic structure and complications fitting linear spin-wave models, we take advantage of multiplexed neutron instrumentation to use the first moment sum rule of neutron scattering to estimate the 7 exchange constants. We then use these parameters to calculate the low-energy spin-waves in the Néel state to reproduce the neutron response without strong antisymmetric coupling. Using Green's response functions, the stability of long-wavelength excitations in the context of proposed magnetic structures is then discussed. The results show the presence of strong exchange constants for the chiral exchange pathways and illustrate an underlying coupling between crystallographic and magnetic ``chirality" through predominantely symmetric exchange.
Student perceptions of a blended learning approach to paramedic education
Creators: name: Oliveri, Lorraine
Publisher: name: CQUniversity
Year: 2021
Subjects: classificationCode: 390110
subject: Medicine, nursing and health curriculum and pedagogy

description: Distance education has been used in various forms since the 1800s. The progression of distance education has seen the paper-based system replaced by modern computing technology for a more effective approach. CQUniversity has a long history of offering distance education across a wide range of disciplines. The Bachelor of Paramedic Science is one of the health-related undergraduate courses offered by distance since 2011. At the time, CQUniversity was the only Australian university that offered an entire pre-employment undergraduate course in paramedicine in a distance mode. Currently, there remain only two universities offering a distance course. Rather than using a standard approach of on-campus lectures and tutorials, CQUniversity uses a blended learning mode which incorporates online (distance) and face-to-face components to the unit. A student enrolled in the blended mode of study views all lectures and resources through a learning management system in an online environment at a time and in a place that suits the student’s personal circumstances. In addition to the online management system, blended learning students travel to a university campus to attend an intensive teaching block known as a residential school for several days during the study term. The residential school activities include tutorials to learn and practise clinical skills, simulated paramedic scenarios and practical assessments. This research is concerned with the perceptions of the end user of this non-traditional blended learning approach to paramedic education, the students undertaking the ‘Foundations of Paramedic Clinical Practice’ unit. The unit is the first of the clinical units in the undergraduate course and teaches basic patient care assessments and life-saving skills and procedures. It is essential students can gain the knowledge and skills in this unit as it provides an integral foundation for more advanced skills and procedures later in the course.
A contribution to communication management in private unmanned aerial vehicle networks
Creators: name: Singh, Prabhu
Publisher: name: CQUniversity
Year: 2023
Subjects: classificationCode: 460609
subject: Networking and communications

description: Unmanned Aerial Vehicles (UAVs) or drones have become extremely popular and are used in various commercial applications. They can provide better services for these applications if they work together and form a UAV network. The Flying Ad-hoc Network (FANET), Internet of Drones (IoD) and the private UAV network are such type of UAV networks invented in the past. A private UAV network is beneficial for these applications where all UAVs belong to a person or one organisation. In this research, we implemented the communication between UAVs and UAV to the ground station at the Media Access Control (MAC) layer in the private UAV network by switching through UAV nodes. To test this communication, we implemented two small private UAV testbed networks with Storm 4 Mini and AR 2.0 UAV models. In the Storm 4 Mini private UAV network, the video signals were transmitted over the 5GHz network while each UAV was controlled through the analog signals from their remote controller over the 2.4 GHz frequency spectrum. Whereas, control and video signals were transmitted over the 2.4 GHz network in the wireless frame format for the AR 2.0 UAV testbed network. This research outlines the real-time practical problems for communication between UAVs and UAV to the ground station in the private UAV network and provides the solutions for those problems. The video transmission delay from each UAV to the ground station was one of them. This video delay was presented in the network due to the use of a common single communication channel between UAVs. To resolve this issue, we proposed and developed new data and control channels that can be used for the communication between UAVs and UAV to the ground station in this UAV network. This new channelisation avoids congestion and packet drop for video and control signal traffic in this network. In a private UAV network where UAVs are connected in tandem, the UAVs that are in the middle of the network have to carry the control and video signals of other UAVs. Given the limited processing power and dynamic memory capacity of UAVs, this would increase the queuing delays for transmission these signals. As such, we studied the frame formats of existing control, feedback and video signals for the smartphone operated commercial UAV and proposed a new approach of signaling for control and feedback frames for the private UAV network. The control and feedback signals transmission delays from each UAV to the ground station were calculated with both types of signaling mechanisms for this UAV network. The result of these delays comparison shows that newly developed signaling mechanism for the private UAV network with the single control and feedback frame has less delay on the average.
Mitteilung des Verbandes Deutscher Kunsthistoriker
Creators: name: Redaktion, Die
Publisher: name: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Year: 2019

description: Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege, Bd. 13 Nr. 5 (1960): Kunstchronik. Monatsschrift für Kunstwissenschaft, Museumswesen und Denkmalpflege
Magnetic field induced lattice ground states from holography
Creators: name: Bu, Yan-Yan
name: Erdmenger, Johanna
name: Shock, Jonathan P.
name: Strydom, Migael
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the holographic field theory dual of a probe SU(2) Yang-Mills field in a background $(4+1)$-dimensional asymptotically Anti-de Sitter space. We find a new ground state when a magnetic component of the gauge field is larger than a critical value. The ground state forms a triangular Abrikosov lattice in the spatial directions perpendicular to the magnetic field. The lattice is composed of superconducting vortices induced by the condensation of a charged vector operator. We perform this calculation both at finite temperature and at zero temperature with a hard wall cutoff dual to a confining gauge theory. The study of this state may be of relevance to both holographic condensed matter models as well as to heavy ion physics. The results shown here provide support for the proposal that such a ground state may be found in the QCD vacuum when a large magnetic field is present.
description: 24 pages, 6 figures. v2: Added references, fixed typos, gave a clearer interpretation and more explicit details of the calculations
Liouvillian exceptional points in continuous variable system
Creators: name: Tay, B. A.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The Liouvillian exceptional points for a quantum Markovian master equation of an oscillator in a generic environment are obtained. They occur at the points when the modified frequency of the oscillator vanishes, whereby the eigenvalues of the Liouvillian become real. In a generic system there are two parameters that modify the oscillator's natural frequency. One of the parameters can be the damping rate. The exceptional point then corresponds to critical damping of the oscillator. This situation is illustrated by the Caldeira--Leggett (CL) equation and the Markovian limit of the Hu--Paz--Zhang (HPZ) equation. The other parameter changes the oscillator's effective mass whereby the exceptional point is reached in the limit of extremely heavy oscillator. This situation is illustrated by a modified form of the Kossakowski--Lindblad (KL) equation. The eigenfunctions coalesce at the exceptional points and break into subspaces labelled by a natural number $N$. In each of the $N$-subspace, there is a $(N+1)$-fold degeneracy and the Liouvillian has a Jordan block structure of order-$(N+1)$. We obtain the explicit form of the generalized eigenvectors for a few Liouvillians. Because of the degeneracies, there is a freedom of choice in the generalized eigenfunctions. This freedom manifests itself as an invariance in the Jordan block structure under a similarity transformation whose form is obtained. We compare the relaxation of the first excited state of an oscillator in the underdamped region, critically damped region which corresponds to the exceptional point, and overdamped region using the generalized eigenvectors of the CL equation.
description: To appear in Physica A (2023)
Identifying and solving issues with acquiring skills in computer programming for non-English speakers
Creators: name: Nnass, Ibrahim
Publisher: name: CQUniversity
Year: 2022
Subjects: classificationCode: 461005
subject: Informetrics
classificationCode: 461204
subject: Programming languages

description: Since computers have become widely used, programming has become a critical skill, as indicated by a recent push by many governments to make it a core part of the secondary school curriculum. Programming languages are built upon English language words and phrases like “for” and “while”, as well as concepts framed in English, like the idea of an “if” statement, representing a choice. It is possible that this could make learning an English-based programming language for non-English language speakers especially challenging. So, what solutions could be developed to solve the problem? With this question in mind, this research investigates non-English language speakers’ grasp of programming. This research started with the question of whether or not needing to understand English would be an extra challenge for students learning programming. Experience from the researcher’s own practice suggested that this was the case; however, what did the literature indicate? An extensive literature review revealed that, in actuality, the literature did not say much. While many focused on solutions to teaching programming, and some researchers focused on the problems that led to these solutions, very few researchers made any distinction between the language capabilities of novices. Even among those projects that were conducted in non-English speaking countries, little attention was given to the demographics of the cohort of participants, and what this meant to the results presented. Based on the literature, this research study highlights issues that directly influence beginners learning programming, looking particularly at the difficulties faced by those that do not have English as a first language. So, the task became to determine whether English was an issue in learning programming or not. A major contribution of this work to the theory and the literature is the observation that issues with programming are different for English language speakers and non-English language speakers. This is something that has not been sufficiently highlighted in the literature in the past. The other contribution of this work is to practice, with the suggestion that strategies such as guidebooks and block programming can help to solve the problems with error messages and syntax for all students. Future work in the area should build upon this contribution, looking to expand experiments on how to solve this issue for non-English language speakers through interventions like those that were trialled. In this way, a greater uptake of programming by all students, both English language speakers and non-English language speakers, can be achieved.
Archäologische Kommission für Niedersachsen e.V. Jahresbericht 2013
Creators: name: Bärenfänger, Rolf
Publisher: name: Nachrichten aus Niedersachsens Urgeschichte
Year: 2019

description: Nachrichten aus Niedersachsens Urgeschichte, Bd. 83 (2014): Nachrichten aus Niedersachsens Urgeschichte
Laminar flow of two miscible fluids in a simple network
Creators: name: Karst, Casey M.
name: Storey, Brian D.
name: Geddes, John B.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: When a fluid comprised of multiple phases or constituents flows through a network, non-linear phenomena such as multiple stable equilibrium states and spontaneous oscillations can occur. Such behavior has been observed or predicted in a number of networks including the flow of blood through the microcirculation, the flow of picoliter droplets through microfluidic devices, the flow of magma through lava tubes, and two-phase flow in refrigeration systems. While the existence of non-linear phenomena in a network with many inter-connections containing fluids with complex rheology may seem unsurprising, this paper demonstrates that even simple networks containing Newtonian fluids in laminar flow can demonstrate multiple equilibria. The paper describes a theoretical and experimental investigation of the laminar flow of two miscible Newtonian fluids of different density and viscosity through a simple network. The fluids stratify due to gravity and remain as nearly distinct phases with some mixing occurring only by diffusion. This fluid system has the advantage that it is easily controlled and modeled, yet contains the key ingredients for network non-linearities. Experiments and 3D simulations are first used to explore how phases distribute at a single T-junction. Once the phase separation at a single junction is known, a network model is developed which predicts multiple equilibria in the simplest of networks. The existence of multiple stable equilibria is confirmed experimentally and a criteria for their existence is developed. The network results are generic and could be applied to or found in different physical systems.
Node-Differentially Private Estimation of the Number of Connected Components
Creators: name: Kalemaj, Iden
name: Raskhodnikova, Sofya
name: Smith, Adam
name: Tsourakakis, Charalampos E.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: We design the first node-differentially private algorithm for approximating the number of connected components in a graph. Given a database representing an $n$-vertex graph $G$ and a privacy parameter $\varepsilon$, our algorithm runs in polynomial time and, with probability $1-o(1)$, has additive error $\widetilde{O}(\frac{Δ^*\ln\ln n}{\varepsilon}),$ where $Δ^*$ is the smallest possible maximum degree of a spanning forest of $G.$ Node-differentially private algorithms are known only for a small number of database analysis tasks. A major obstacle for designing such an algorithm for the number of connected components is that this graph statistic is not robust to adding one node with arbitrary connections (a change that node-differential privacy is designed to hide): every graph is a neighbor of a connected graph. We overcome this by designing a family of efficiently computable Lipschitz extensions of the number of connected components or, equivalently, the size of a spanning forest. The construction of the extensions, which is at the core of our algorithm, is based on the forest polytope of $G.$ We prove several combinatorial facts about spanning forests, in particular, that a graph with no induced $Δ$-stars has a spanning forest of degree at most $Δ$. With this fact, we show that our Lipschitz extensions for the number of connected components equal the true value of the function for the largest possible monotone families of graphs. More generally, on all monotone sets of graphs, the $\ell_\infty$ error of our Lipschitz extensions is nearly optimal.
The Density Profiles of Massive, Relaxed Galaxy Clusters. I. The Total Density Over Three Decades in Radius
Creators: name: Newman, Andrew B.
name: Treu, Tommaso
name: Ellis, Richard S.
name: Sand, David J.
name: Nipoti, Carlo
name: Richard, Johan
name: Jullo, Eric
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Clusters of galaxies are excellent locations to probe the distribution of baryons and dark matter (DM) over a wide range of scales. We study a sample of seven massive, relaxed galaxy clusters with centrally-located brightest cluster galaxies (BCGs) at z=0.2-0.3. Using the observational tools of strong and weak gravitational lensing, combined with resolved stellar kinematics within the BCG, we measure the total radial density profile, comprising both dark and baryonic matter, over scales of ~3-3000 kpc. Lensing-derived mass profiles typically agree with independent X-ray estimates within ~15%, suggesting that departures from hydrostatic equilibrium are small and that the clusters in our sample (except A383) are not strongly elongated along the line of sight. The inner logarithmic slope gamma_tot of the total density profile measured over r/r200=0.003-0.03, where rho_tot ~ r^(-gamma_tot), is found to be nearly universal, with a mean = 1.16 +- 0.05 (random) +0.05-0.07 (systematic) and an intrinsic scatter of < 0.13 (68% confidence). This is further supported by the very homogeneous shape of the observed velocity dispersion profiles, obtained via Keck spectroscopy, which are mutually consistent after a simple scaling. Remarkably, this slope agrees closely with numerical simulations that contain only dark matter, despite the significant contribution of stellar mass on the scales we probe. The Navarro-Frenk-White profile characteristic of collisionless cold dark matter is a better description of the total mass density at radii >~ 5-10 kpc than that of dark matter alone. Hydrodynamical simulations that include baryons, cooling, and feedback currently provide a poorer match. We discuss the significance of our findings for understanding the assembly of BCGs and cluster cores, particularly the influence of baryons on the inner DM halo. [abridged]
description: Updated to matched the published version in ApJ
The impacts of climate change on water resources of Fitzroy River and Tigris Rivers Basins and identification of adaptation measures
Creators: name: Abbas, Nahlah
Publisher: name: CQUniversity
Year: 2023
Subjects: classificationCode: 370704
subject: Surface water hydrology

description: Australia and Northeast Iraq have scarce water resources which are vulnerable to climate change. Analyses of historical data have revealed that these two regions are experiencing climate change to a degree higher than generally reported elsewhere. To date the relationship between climate change and its effect on water resources of Australia and Northeast Iraq has been sparsely addressed in the published literature, and almost no attention has been paid to climate change-related water resources issues. In order to fill that gap, this research work first investigates if there has been a significant change in climate in these two regions, and this has been found to be true. The relationship between climate change and its impact on water resources is explored through the application of the widely used ‘white box’ model SWAT. The model depicts the availability of water resources, classified separately as blue and green waters, for short-term and distant futures for the two regions. Some of the findings are foreboding and warrant urgent attention of planners and decision makers for certain places where (in both regions) the results show that climate change will have major impacts on water resources. The Fitzroy River Basin will experience hotter and wetter weather, while the Iraqi Basin will see hotter and drier weather in the near and distant futures, near being up to 2046-2064 and distant being up to 2080-2100. The research makes some projections of future water resource distributions in the two regions based on climatic scenarios from some widely used General Circulation Model (GCM) ensembles. The research further investigates how the population is adapting to already changed climates and how it is expected to cope in the future when the shift in climate is expected to be much greater.
Rituximab therapy improves recalcitrant Pemphigus vulgaris
Creators: name: Noormohammadpour, Pedram
name: Ehsani, Amirhooshang
name: Mortazavi, Hossein
name: Daneshpazhooh, Maryam
name: Balighi, Kamran
name: Mofidi, Mohammad
name: Gholamali, Fatemeh
name: Sadeghinia, Ali
Publisher: name: IfADo - Leibniz Research Centre for Working Environment and Human Factors
Year: 2015
Subjects: Pemphigus vulgaris
Rituximab
anti-desmoglein 1 antibody
anti-desmoglein 3 antibody
CD20 positive cells

description: Pemphigus is a severe life-threatening blistering disease associated with autoantibodies against cell adhesion proteins desmogleins 1 and 3. Patients with severe pemphigus commonly show high rates of relapse after conventional immunosuppressive therapy. The newly developed drug Rituximab showed impressing promises in the treatment of refractory pemphigus vulgaris (PV). In the present study the efficacy of a single course rituximab therapy in the treatment of PV was investigated. Eighteen patients with severe recalcitrant PV were recruited to this study. Pemphigus disease activity index (PDAI), anti-desmoglein 1 and anti-desmoglein 3 antibody titers, and percent of CD20 positive cells were measured at baseline, 10 ± 1, and 22 ± 2 weeks after rituximab therapy. Rituximab was given intravenously at dose 375 mg/m2 once weekly for 4 weeks. Rituximab therapy caused a dramatic reduction in the PDAI, accompanied by decreases in anti-desmoglein 1 and anti-desmoglein 3 antibody titers over the follow-up course. The B-cell population decreased at the first follow-up, but returned to its baseline levels at the second follow-up. Rituximab therapy decreased the dose of immunosuppressive drugs required to control the disease. It seems that the rituximab may be effective and safe for treatment of refractory PV.
description: EXCLI Journal; 14:Doc109; ISSN 1611-2156<
Factors contributing to normothermia in people with a major burn injury in the first 24 hours of hospital admission
Creators: name: Clack, Jessica
Publisher: name: CQUniversity
Year: 2023
Subjects: classificationCode: 420599
subject: Nursing not elsewhere classified
classificationCode: 320212
subject: Intensive care

description: Through a retrospective chart audit, this research revealed that the body temperature of a burn-injured person on admission to hospital is a key factor in contributing to normothermia following hypothermia. This finding will assist patients immediate emergency care needs.
Gate control of Berry phase in III-V semiconductor quantum dots
Creators: name: Prabhakar, Sanjay
name: Melnik, Roderick
name: Bonilla, Luis L
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Berry phase in semiconductor quantum dots (QDs) can be induced by moving the dots adiabatically in a closed loop with the application of the distortion potential in the lateral direction. We show that the Berry phase is highly sensitive to the electric fields arising from the interplay between the Rashba and the Dresselhaus spin-orbit couplings. We report that the accumulated Berry phase can be induced from other available quantum state that are only differed by one quantum number of the same spin state. The sign change in the g-factor due to the penetration of the Bloch wavefunctions into the barrier material can be reflected in the Berry phase. We solve the time dependent Schr$\mathrm{\ddot{o}}$dinger equation and investigate the evolution of the spin dynamics during the adiabatic movement of the QDs in the 2D plane. Our results might open the possibilities of building a topological quantum dot quantum computer where the Berry phase can be engineered and can be manipulated with the application of the spin-orbit couplings through gate controlled electric fields.
description: 10 pages, 11 figures
From felon to freeman: A convict's reclaimed life
Creators: name: Reaney, Jeffrey
Publisher: name: CQUniversity
Year: 2023
Subjects: classificationCode: 430302
subject: Australian history
classificationCode: 430303
subject: Biography
classificationCode: 430304
subject: British history

description: This PhD consists of a speculative biography that follows the life of a convict named William Coombe, who was transported from England to Australia in 1835. The narrative recounts his life journey from a small English village through his crime, trial, transportation to and assignment in, Australia. It relates the story of his re-entry into society after gaining a conditional pardon, thus assisting to close an identified gap in convict literature. The speculative biography drew together the elements comprising his redemption: work, family, social and political activity, and other pursuits he followed in building his future. His life demonstrated that convicts could successfully rehabilitate, ‘the stain’ could be expunged and ex-convicts could make a productive contribution to society. The story also provides insights into Queensland’s colonial history and the role of convicts therein. The exegesis explores speculative biography and the scholarly debates associated with colonial convict history. The main research questions revolve around better understanding how and why the speculative biography has been used to write the past, then how and why the creative artefact conforms and sometimes differs to this contentious biographical sub-genre. The exegesis also asks what are the key fictional and historical techniques authors typically use when mobilising this sub-genre and what specific challenges and obligations were encountered when doing so. Using the Practice-led research methodology, the exegesis offers a critical explanation of how the research questions were addressed and answered, thereby adding to the store of knowledge regarding the application of utilising the speculative biography in producing historical works within various contexts.
Developing jazz communities in regional Australia: A multi-site qualitative study on Cairns and Mackay, North Queensland
Creators: name: Mckenzie, Peter
Publisher: name: CQUniversity
Year: 2023
Subjects: classificationCode: 360304
subject: Music performance

description: The mention of jazz in Australia might conjure up thoughts of performances in trendy laneway venues in Melbourne or other metropolitan cities. However, jazz is performed throughout the country in many smaller regional centres. These regions often have highly skilled musicians who enjoy the support of a small, but passionate, community. This thesis documents a qualitative exploration of the question: What factors influence the development and sustainability of a jazz community in regional Australia? The study focussed on Cairns and Mackay in North Queensland, Australia, and applied grounded theory methodology to data from 24 semi-structured interviews with community members in both regions. The data collection also included a survey of audience members associated with the jazz community in Mackay. The study investigated topics associated with performance, sociological, governmental and educational factors in both communities, and through the grounded theory process it uncovered three major influences: venues, regionality and education. It was discovered that both communities shared similar challenges in relation to jazz musicians performing in venues, working with venue owners, and attracting audiences. Both regions also shared issues relating to geographical isolation, economic impacts, transient populations, and parochialism from the general public. While there were some similarities in the factors that contributed to the development of the jazz communities in Cairns and Mackay, the study also uncovered significant differences based on the distinct geographical, economic, sociological and educational influences within each region. i This study provided an opportunity to explore multiple approaches to building and sustaining two North Queensland jazz communities. Since some of these approaches might be applicable to jazz communities in other regional areas, a series of practical recommendations have been drawn from this investigation.
Towards Responsible AI: XAI as a Catalyst for Participatory Development Practices
Creators: name: Kallina, Emma
name: Singh, Jatinder
Publisher: name: Zenodo
Year: 2025
Subjects: Participatory AI
Development
Responsible AI
Stakeholder Engagement
Explainable AI
Transparency

description: This paper builds on the call for more human-centred XAI (explainable AI), arguing that XAI is a necessary but under-researched component of meaningful participatory AI development: only if a range of different stakeholder communities can understand, interpret, and scrutinise a system, can they meaningfully participate throughout various points of the AI lifecycle. However, while significant research has centred on XAI primarily targetting developers, those with expert knowledge, or specific end-users, XAI solutions tailored to affected communities are currently less explored -- especially how their information needs change along the AI lifecycle and the factors influencing this. By highlighting current challenges and proposing research agenda for moving forward, the paper aims to stimulate the discussion around how XAI can facilitate meaningful involvement from affected communities, as is crucial for the development of more responsible AI systems.
(Down-to-)Earth matter effect in supernova neutrinos
Creators: name: Borriello, Enrico
name: Chakraborty, Sovan
name: Mirizzi, Alessandro
name: Serpico, Pasquale Dario
name: Tamborra, Irene
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Neutrino oscillations in the Earth matter may introduce peculiar modulations in the supernova (SN) neutrino spectra. The detection of this effect has been proposed as diagnostic tool for the neutrino mass hierarchy at "large" 1-3 leptonic mixing angle theta13. We perform an updated study on the observability of this effect at large next-generation underground detectors (i.e., 0.4 Mton water Cherenkov, 50 kton scintillation and 100 kton liquid Argon detectors) based on neutrino fluxes from state-of-the-art SN simulations and accounting for statistical fluctuations via Montecarlo simulations. Since the average energies predicted by recent simulations are lower than previously expected and a tendency towards the equalization of the neutrino fluxes appears during the SN cooling phase, the detection of the Earth matter effect will be more challenging than expected from previous studies. We find that none of the proposed detectors shall be able to detect the Earth modulation for the neutrino signal of a typical galactic SN at 10 kpc. It should be observable in a 100 kton liquid Argon detector for a SN at few kpc and all three detectors would clearly see the Earth signature for very close-by stars only (d ~ 0.2 kpc). Finally, we show that adopting IceCube as co-detector together with a Mton water Cherenkov detector is not a viable option either.
description: (14 pages, 5 ps figures)
The Density Profiles of Massive, Relaxed Galaxy Clusters. II. Separating Luminous and Dark Matter in Cluster Cores
Creators: name: Newman, Andrew B.
name: Treu, Tommaso
name: Ellis, Richard S.
name: Sand, David J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present stellar and dark matter (DM) density profiles for a sample of seven massive, relaxed galaxy clusters derived from strong and weak gravitational lensing and resolved stellar kinematic observations within the centrally-located brightest cluster galaxies (BCGs). In Paper I of the series, we demonstrated that the total density profile derived from these data, which span 3 decades in radius, is consistent with numerical DM-only simulations at radii >~ 5-10 kpc, despite the significant contribution of stellar material in the core. Here we decompose the inner mass profiles of these clusters into stellar and dark components. Parametrizing the DM density profile as a power law rho_DM ~ r^{-β} on small scales, we find a mean slope = 0.50 +- 0.10 (random) +0.14-0.13 (systematic). Alternatively, cored Navarro-Frenk-White (NFW) profiles with = 1.14 +- 0.13 (random) +0.14-0.22 (systematic) provide an equally good description. These density profiles are significantly shallower than canonical NFW models at radii
description: Updated to matched the published version in ApJ