cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Green Entrepreneurial Opportunities in Wastewater Management Implications for Sustainable Economic Growth in Nigeria.pdf
Creators: name: Orji, Evelyn   Ijeoma
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 399999
subject: Other education not elsewhere classified

description: Abstract: The world’s wastewater – about 80 percent of which is released into the environment without adequate treatment – is a valuable resource from which clean water, energy, nutrients, and other resources can be recovered. As population grows and urbanization increases, more wastewater is generated and there is need to create more awareness on the health, economic and environmental implications of poorly disposed wastewater. Climate change, global warming and other related environmental challenges such as water pollution presently pose as a threat to biodiversity and sustainable economic growth in Nigeria. However, within these environmental challenges are self-reliant opportunities, one of which is green entrepreneurship in wastewater management. Perceivably, this has implications for sustainable economic growth in Nigeria. This paper calls for smarter wastewater management, including reuse and resource recovery. It also examined wastewater management projects in Nigeria which have paid dividends for people, the environment, and economies in the short and long-term. This paper concludes by highlighting the economic, environmental and health benefits of wastewater management for sustainable development in Nigeria. Keywords: Economic Growth, Green Entrepreneurship, Waste Water Management, Sustainable Development,
Lagrangian Descriptors for Two Dimensional, Area Preserving, Autonomous and Nonautonomous Maps
Creators: name: Lopesino, Carlos
name: Balibrea-Iniesta, Francisco
name: Wiggins, Stephen
name: Mancho, Ana M.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: In this paper we generalize the method of Lagrangian descriptors to two dimensional, area preserving, autonomous and nonautonomous discrete time dynamical systems. We consider four generic model problems--a hyperbolic saddle point for a linear, area-preserving autonomous map, a hyperbolic saddle point for a nonlinear, area-preserving autonomous map, a hyperbolic saddle point for linear, area-preserving nonautonomous map, and a hyperbolic saddle point for nonlinear, area-preserving nonautonomous map. The discrete time setting allows us to evaluate the expression for the Lagrangian descriptors explicitly for a certain class of norms. This enables us to provide a rigorous setting for the notion that the "singular sets'' of the Lagrangian descriptors correspond to the stable and unstable manifolds of hyperbolic invariant sets, as well as to understand how this depends upon the particular norms that are used. Finally we analyze, from the computational point of view, the performance of this tool for general nonlinear maps, by computing the "chaotic saddle'' for autonomous and nonautonomous versions of the Hénon map.
Effect of Silicon Atom Doping in SiNx Resistive Switching Films
Creators: name: Mavropoulis, A
name: Vasileiadis, N
name: Bonafos, C
name: Normand, P
name: Ioannou-Sougleridis, V
name: Sirakoulis, G Ch
name: Dimitrakis, P
Publisher: name: arXiv
Year: 2025
Subjects: subject: Applied Physics (physics.app-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Doping stoichiometric SiNx layers (x=[N]/[Si]=1.33) with Si atoms by ultra-low energy ion implantation (ULE-II) and annealing them at different temperatures can significantly impact the switching characteristics. Electrical characterization and dielectric breakdown measurements are used to identify the main switching properties and performance of the fabricated devices and the effect that the Si dopants and annealing temperature have. In addition, impedance spectroscopy measurements revealed the dielectric properties of the silicon nitride films, as well as the ac conductance, which is utilized to identify the conduction mechanisms.
Generalized Coherence Concurrence and Path distinguishability
Creators: name: Chin, Seungbeom
Publisher: name: arXiv
Year: 2017
Subjects: subject: Quantum Physics (quant-ph)
subject: Information Theory (cs.IT)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: We propose a new family of coherence monotones, named the \emph{generalized coherence concurrence} (or coherence $k$-concurrence), which is an analogous concept to the generalized entanglement concurrence. The coherence $k$-concurrence of a state is nonzero if and only if the coherence number (a recently introduced discrete coherence monotone) of the state is not smaller than $k$, and a state can be converted to a state with nonzero entanglement $k$-concurrence via incoherent operations if and only if the state has nonzero coherence $k$-concurrence. We apply the coherence concurrence family to the problem of wave-particle duality in multi-path interference phenomena. We obtain a sharper equation for path distinguishability (which witness the duality) than the known value and show that the amount of each concurrence for the quanton state determines the number of slits which are identified unambiguously.
description: 9 pages, Revtex 4.1; (v3) new analysis on the application of generalized coherence concurrence to multi-path interference problems, former title "Generalized Coherence Concurrence and Coherence Number", (v4) minor error corrections
Occurrence of radio minihalos in a mass-limited sample of galaxy clusters
Creators: name: Giacintucci, Simona
name: Markevitch, Maxim
name: Cassano, Rossella
name: Venturi, Tiziana
name: Clarke, Tracy E.
name: Brunetti, Gianfranco
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We investigate the occurrence of radio minihalos --- diffuse radio sources of unknown origin observed in the cores of some galaxy clusters --- in a statistical sample of 58 clusters drawn from the Planck Sunyaev-Zel'dovich cluster catalog using a mass cut ($M_{500}>6\times 10^{14} M_{\odot}$). We supplement our statistical sample with a similarly-sized non-statistical sample mostly consisting of clusters in the ACCEPT X-ray catalog with suitable X-ray and radio data, which includes lower-mass clusters. Where necessary (for 9 clusters), we reanalyzed the Very Large Array archival radio data to determine if a mihinalo is present. Our total sample includes all 28 currently known and recently discovered radio minihalos, including 6 candidates. We classify clusters as cool-core or non-cool core according to the value of the specific entropy floor in the cluster center, rederived or newly derived from the Chandra X-ray density and temperature profiles where necessary (for 27 clusters). Contrary to the common wisdom that minihalos are rare, we find that almost all cool cores - at least 12 out of 15 (80%) - in our complete sample of massive clusters exhibit minihalos. The supplementary sample shows that the occurrence of minihalos may be lower in lower-mass cool-core clusters. No minihalos are found in non-cool-cores or "warm cores". These findings will help test theories of the origin of minihalos and provide information on the physical processes and energetics of the cluster cores.
description: 34 pages, accepted for publication in ApJ. Added a section "Definition of a minihalo" and an appendix "Radio size and average surface brigthtness of minihalos and halos"
Extracting Microlensing Signals from K2 Campaign 9
Creators: name: Zhu, Wei
name: Huang, Chelsea
name: Udalski, A.
name: Soares-Furtado, M.
name: Poleski, R.
name: Skowron, J.
name: Mróz, P.
name: Szymański, M. K.
name: Soszyński, I.
name: Pietrukowicz, P.
name: Kozlowski, S.
name: Ulaczyk, K.
name: Pawlak, M.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The reduction of the \emph{K2}'s Campaign 9 (K2C9) microlensing data is challenging mostly because of the very crowded field and the unstable pointing of the spacecraft. In this work, we present the first method that can extract microlensing signals from this K2C9 data product. The raw light curves and the astrometric solutions are first derived, using the techniques from Soares-Furtado et al. and Huang et al. for \emph{K2} dense field photometry. We then minimize and remove the systematic effect by performing simultaneous modeling with the microlensing signal. We also derive precise $(K_p-I)$ vs. $(V-I)$ color-color relations that can predict the microlensing source flux in the \emph{Kepler} bandpass. By implementing the color-color relation in the light curve modeling, we show that the microlensing parameters can be better constrained. In the end, we use two example microlensing events, OGLE-2016-BLG-0980 and OGLE-2016-BLG-0940, to test our method.
description: 11 pages, 8 figures and 2 tables; published on PASP
The Infimum of Lipschitz Constants in the Conjugacy Class of an Interval Map
Creators: name: Bobok, Jozef
name: Roth, Samuel
Publisher: name: arXiv
Year: 2016
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 37E05 (Primary), 26A16 (Secondary), 37B40

description: How can we interpret the infimum of Lipschitz constants in a conjugacy class of interval maps? For positive entropy maps, the exponential of the topological entropy gives a well-known lower bound. We show that for piecewise monotone interval maps as well as for $C^{\infty}$ interval maps, these two quantities are equal, but for countably piecewise monotone maps, the inequality can be strict. Moreover, in the topologically mixing and Markov case, we characterize the infimum of Lipschitz constants as the exponential of the Salama entropy of a certain reverse Markov chain associated with the map. Dynamically, this number represents the exponential growth rate of the number of iterated preimages of nearly any point.
description: 16 pages
Fate of an Accretion Disc around a Black Hole when both the Viscosity and Dark Energy is Effecting
Creators: name: Dutta, Sandip
name: Biswas, Ritabrata
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: This paper deals with the viscous accretion flow of modified Chaplygin gas towards a black hole as the central gravitating object. Modified Chaplygin gas is a particular type of dark energy model which mimics of radiation era to phantom era depending on the different values of its parameters. We compare the drak energy accretion with the flow of adiabatic gas. An accretion disc flow around a black hole is an example of a transonic flow. To make the model, we consider three components of Navier Stokes' equation, the equation of continuity and the modified Chaplygin gas's equation of state. As a transonic flow passes through the sonic point, the velocity gradient being apparently singular there, gives rise to two flow branches : one infalling, the accretion and the other outgoing, the wind. We show that the wind curve is stronger and wind speed reaches to that of light at a finite distance from the black hole when dark energy is considered. Besides, if we increase the viscosity, accretion disc is being shortened. This two process acting together deviates much from adiabatic accretion case. It shows a weakening process for the accretion procedure by the works of viscous system influenced angular momentum transport and the repulsive force of the modified Chaplygin gas together.
description: 12 pages, 18 figures
Calibration of the Large Area X-ray Proportional Counter (LAXPC) instrument on-board AstroSat
Creators: name: Antia, H. M.
name: Yadav, J. S.
name: Agrawal, P. C.
name: Chauhan, Jai Verdhan
name: Manchanda, R. K.
name: Chitnis, Varsha
name: Paul, Biswajit
name: Dedhia, Dhiraj
name: Shah, Parag
name: Gujar, V. M.
name: Katoch, Tilak
name: Kurhade, V. N.
name: Madhwani, Pankaj
name: Manojkumar, T. K.
name: Nikam, V. A.
name: Pandya, A. S.
name: Parmar, J. V.
name: Pawar, D. M.
name: Pahari, Mayukh
name: Misra, Ranjeev
name: Navalgund, K. H.
name: Pandiyan, R.
name: Sharma, K. S.
name: Subbarao, K.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We present the calibration and background model for the Large Area X-ray Proportional Counter (LAXPC) detectors on-board AstroSat. LAXPC instrument has three nominally identical detectors to achieve large collecting area. These detectors are independent of each other and in the event analysis mode, they record the arrival time and energy of each photon that is detected. The detectors have a time-resolution of 10 $μ$s and a dead-time of about 42 $μ$s. This makes LAXPC ideal for timing studies. The energy resolution and peak channel to energy mapping were obtained from calibration on ground using radioactive sources coupled with GEANT4 simulations of the detectors. The response matrix was further refined from observations of the Crab X-ray source after launch. At around 20 keV the energy resolution of detector is about 10--15\%, while the combined effective area of the 3 detectors is about 6000 cm$^2$.
description: Accepted for publication in ApJS
Theory of anomalous magnetotransport from mass anisotropy
Creators: name: Zou, Liujun
name: Lederer, Samuel
name: Senthil, T.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: In underdoped YBa$_2$Cu$_3$O$_{6+x}$, there is evidence of a small Fermi surface pocket subject to substantial mass enhancement in the doping regime $ 0.12
description: 4 pages, 3 figures, plus appendices
Rolled‐Up Self‐Assembly of Compact Magnetic Inductors, Transformers, and Resonators
Creators: name: Karnaushenko, Dmitriy D.
name: Karnaushenko, Daniil
name: Grafe, Hans‐Joachim
name: Kataev, Vladislav
name: Büchner, Bernd
name: Schmidt, Oliver G.
Publisher: name: Weinheim : Wiley-VCH Verlag GmbH & Co. KG
Year: 2018
Subjects: subject: coils
subject: self-assembly
subject: shapeable electronics
subject: strain engineering
subject: transformers
subject: 621.3

description: 3D self-assembly of lithographically patterned ultrathin films opens a path to manufacture microelectronic architectures with functionalities and integration schemes not accessible by conventional 2D technologies. Among other microelectronic components, inductances, transformers, antennas, and resonators often rely on 3D configurations and interactions with electromagnetic fields requiring exponential fabrication efforts when downscaled to the micrometer range. Here, the controlled self-assembly of functional structures is demonstrated. By rolling up ultrathin films into cylindrically shaped microelectronic devices, electromagnetic resonators, inductive and mutually coupled coils are realized. Electrical performance of these devices is improved purely by transformation of a planar into a cylindrical geometry. This is accompanied by an overall downscaling of the device footprint area by more than 50 times. Application of compact self-assembled microstructures has significant impact on electronics, reducing size, fabrication efforts, and offering a wealth of new features in devices by 3D shaping.
Production of muons from heavy-flavour hadron decays in p-Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$ TeV
Creators: name: ALICE Collaboration
Publisher: name: arXiv
Year: 2017
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The production of muons from heavy-flavour hadron decays in p-Pb collisions at $\sqrt{{\textit s}_{\rm NN}}=5.02$ TeV was studied for $2 < p_{\rm T} < 16$ GeV/$c$ with the ALICE detector at the CERN LHC. The measurement was performed at forward (p-going direction) and backward (Pb-going direction) rapidity, in the ranges of rapidity in the center-of-mass system (cms) $2.03
description: 25 pages, 4 captioned figures, 1 table, authors from page 20, published version, figures at http://aliceinfo.cern.ch/ArtSubmission/node/3397
Hierarchical Corannulene‐Based Materials: Energy Transfer and Solid‐State Photophysics
Creators: name: Rice, Allison M.
name: Fellows, W. Brett
name: Dolgopolova, Ekaterina A.
name: Greytak, Andrew B.
name: Vannucci, Aaron K.
name: Smith, Mark D.
name: Karakalos, Stavros G.
name: Krause, Jeanette A.
name: Avdoshenko, Stanislav M.
name: Popov, Alexey A.
name: Shustova, Natalia B.
Publisher: name: Weinheim : Wiley-VCH
Year: 2017
Subjects: subject: corannulene
subject: energy transfer
subject: MOFs
subject: photoluminescence
subject: photophysics
subject: 540

description: We report the first example of a donor–acceptor corannulene-containing hybrid material with rapid ligand-to-ligand energy transfer (ET). Additionally, we provide the first time-resolved photoluminescence (PL) data for any corannulene-based compounds in the solid state. Comprehensive analysis of PL data in combination with theoretical calculations of donor–acceptor exciton coupling was employed to estimate ET rate and efficiency in the prepared material. The ligand-to-ligand ET rate calculated using two models is comparable with that observed in fullerene-containing materials, which are generally considered for molecular electronics development. Thus, the presented studies not only demonstrate the possibility of merging the intrinsic properties of π-bowls, specifically corannulene derivatives, with the versatility of crystalline hybrid scaffolds, but could also foreshadow the engineering of a novel class of hierarchical corannulene-based hybrid materials for optoelectronic devices.
A healthy work identity
Creators: name: Tasler, Nathalie
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 390303
subject: Higher education
classificationCode: 390307
subject: Teacher education and professional development of educators

description: In coaching today* I had a profound insight! Until today I did not have a mental image of a healthy work identity. Literally drew blank when asked. Nothing.So far I have more or less successfully lived off the typical ADHD bursts of focus and the subsequent cognitive hangovers. I don’t think I want, or will be able, to completely change this. As this is my brain at its optimum working mode, with hyper-focussed significant outputs and cognitive hangover for busy work.
The Chaotic Saddle in the Lozi map, autonomous and non-autonomous versions
Creators: name: Lopesino, Carlos
name: Balibrea-Iniesta, Francisco
name: Wiggins, Stephen
name: Mancho, Ana M.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: In this paper we prove the existence of a chaotic saddle for a piecewise linear map of the plane, referred to as the Lozi map. We study the Lozi map in its orientation and area preserving version. First, we consider the autonomous version of the Lozi map to which we apply the Conley-Moser conditions to obtain the proof of a chaotic saddle. Then we generalize the Lozi map on a non-autonomous version and we prove that the first and the third Conley-Moser conditions are satisfied, which imply the existence of a chaotic saddle. Finally, we numerically demonstrate how the structure of this nonautonomous chaotic saddle varies as parameters are varied.
Nuclear Effects in the Deuteron and Constraints on the d/u Ratio
Creators: name: Alekhin, S. I.
name: Kulagin, S. A.
name: Petti, R.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present a detailed study of nuclear corrections in the deuteron (D) by performing an analysis of data from deep inelastic scattering off proton and D, dilepton pair production in $pp$ and pD interactions, and W^+- and Z boson production in pp and p pbar collisions. In particular, we discuss the determination of the off-shell function describing the modification of the parton distribution functions in bound nucleons in the context of global QCD fits. Our results are consistent with the ones obtained independently from the study of deep inelastic scattering data off heavy nuclei with $A\geq4$, further confirming the universality of the off-shell function. We also study the sensitivity to the modeling of the deuteron wave function. As an important application we discuss the impact of nuclear corrections to the deuteron on the determination of the d quark distribution.
description: 28 pages, 14 figures (typos fixed, text editing, appendix added)
Thermally Activated Delayed Fluorescence in a Y3N@C80 Endohedral Fullerene: Time-Resolved Luminescence and EPR Studies
Creators: name: Zalibera, Michal
name: Krylov, Denis S.
name: Karagiannis, Dimitrios
name: Will, Paul-Anton
name: Ziegs, Frank
name: Schiemenz, Sandra
name: Lubitz, Wolfgang
name: Reineke, Sebastian
name: Savitsky, Anton
name: Popov, Alexey A.
Publisher: name: Weinheim : Wiley-VCH
Year: 2017
Subjects: subject: delayed fluorescence
subject: endohedral fullerenes
subject: EPR/ENDOR
subject: luminescence
subject: OLEDs
subject: 540

description: The endohedral fullerene Y3N@C80 exhibits luminescence with reasonable quantum yield and extraordinary long lifetime. By variable-temperature steady-state and time-resolved luminescence spectroscopy, it is demonstrated that above 60 K the Y3N@C80 exhibits thermally activated delayed fluorescence with maximum emission at 120 K and a negligible prompt fluorescence. Below 60 K, a phosphorescence with a lifetime of 192±1 ms is observed. Spin distribution and dynamics in the triplet excited state is investigated with X- and W-band EPR and ENDOR spectroscopies and DFT computations. Finally, electroluminescence of the Y3N@C80/PFO film is demonstrated opening the possibility for red-emitting fullerene-based organic light-emitting diodes (OLEDs).
On the SNR Variability in Noisy Compressed Sensing
Creators: name: Lavrenko, Anastasia
name: Roemer, Florian
name: Del Galdo, Giovanni
name: Thomae, Reiner
Publisher: name: arXiv
Year: 2016
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: Compressed sensing (CS) is a sampling paradigm that allows to simultaneously measure and compress signals that are sparse or compressible in some domain. The choice of a sensing matrix that carries out the measurement has a defining impact on the system performance and it is often advocated to draw its elements randomly. It has been noted that in the presence of input (signal) noise, the application of the sensing matrix causes SNR degradation due to the noise folding effect. In fact, it might also result in the variations of the output SNR in compressive measurements over the support of the input signal, potentially resulting in unexpected non-uniform system performance. In this work, we study the impact of a distribution from which the elements of a sensing matrix are drawn on the spread of the output SNR. We derive analytic expressions for several common types of sensing matrices and show that the SNR spread grows with the decrease of the number of measurements. This makes its negative effect especially pronounced for high compression rates that are often of interest in CS.
description: 4 pages + references
Photocatalytic Degradation of Some Phenolic Compounds Present in Olive Mill Wastewater
Creators: name: Rimawi, Waleed H.
name: Salim, Hatim
name: Seder, Doaa
name: Ghunaim, Rasha
name: Hampel, Silke
Publisher: name: Ghaziabad : [Verlag nicht ermittelbar]
Year: 2018
Subjects: subject: Gallic acid
subject: Oleuropein
subject: Olive mill wastewater
subject: Photocatalytic degradation
subject: Resorcinol
subject: 540

description: The olive oil industry in Palestine is an important and widely spread one and accomplished with the release of large amounts of olive-mills wastewater. This wastewater represents a significant environmental problem due to its high phenolic content. In this work, the photocatalytic degradation of the some phenolic compounds (gallic acid, oleuropein and resorcinol) present in olive-mills wastewater using the synthesized nanoparticles of mixed SnO2-MgO catalyst and solar irradiation was performed. The nanoparticles of mixed SnO2-MgO catalyst with different ratios were prepared by sol gel method using a modified procedure. The obtained particles were characterized by SEM and XRD. The particle size was determined as 4.32 ± 0.42 nm which is much smaller than those previously prepared by standard procedures. The degradation percentage of phenolic compounds was measured by UV spectrophotometry. The effect of time, catalyst amount and phenolic compound concentration on degradation efficiency was studied. The maximum degradation was achieved using SnO2-MgO (4:1) catalyst, 2.5 mg catalyst per 5 mL solution, within the time of 60-120 min and ranged from 51 to 90 % for different concentrations of phenolic compounds.
Topological origin of edge states in two-dimensional inversion-symmetric insulators and semimetals
Creators: name: Miert, Guido Van
name: Ortix, Carmine
name: Smith, Cristiane Morais
Publisher: name: Bristol : IOP Publ.
Year: 2016
Subjects: subject: Dirac materials
subject: Edge states
subject: Phosphorene
subject: Topological insulators
subject: Zak phase
subject: 530

description: Symmetries play an essential role in identifying and characterizing topological states of matter. Here, we classify topologically two-dimensional (2D) insulators and semimetals with vanishing spin-orbit coupling using time-reversal (T) and inversion (I) symmetry. This allows us to link the presence of edge states in I and T symmetric 2D insulators, which are topologically trivial according to the Altland-Zirnbauer table, to a ℤ2 topological invariant. This invariant is directly related to the quantization of the Zak phase. It also predicts the generic presence of edge states in Dirac semimetals, in the absence of chiral symmetry. We then apply our findings to bilayer black phosphorus and show the occurrence of a gate-induced topological phase transition, where the ℤ2 invariant changes.
Production of $π^0$ and $η$ mesons up to high transverse momentum in pp collisions at 2.76 TeV
Creators: name: ALICE Collaboration
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: The invariant differential cross sections for inclusive $π^{0}$ and $η$ mesons at midrapidity were measured in pp collisions at $\sqrt{s}=2.76$ TeV for transverse momenta $0.4
description: 34 pages, 11 captioned figures, 8 tables, authors from page 28, published version figures at http://aliceinfo.cern.ch/ArtSubmission/node/3396
Edit Transactions: Dynamically Scoped Change Sets for Controlled Updates in Live Programming
Creators: name: Mattis, Toni
name: Rein, Patrick
name: Hirschfeld, Robert
Publisher: name: arXiv
Year: 2017
Subjects: subject: Software Engineering (cs.SE)
subject: Programming Languages (cs.PL)
subject: FOS: Computer and information sciences

description: Live programming environments enable programmers to edit a running program and obtain immediate feedback on each individual change. The liveness quality is valued by programmers to help work in small steps and continuously add or correct small functionality while maintaining the impression of a direct connection between each edit and its manifestation at run-time. Such immediacy may conflict with the desire to perform a combined set of intermediate steps, such as a refactoring, without immediately taking effect after each individual edit. This becomes important when an incomplete sequence of small-scale changes can easily break the running program. State-of-the-art solutions focus on retroactive recovery mechanisms, such as debugging or version control. In contrast, we propose a proactive approach: Multiple individual changes to the program are collected in an Edit Transaction, which can be made effective if deemed complete. Upon activation, the combined steps become visible together. Edit Transactions are capable of dynamic scoping, allowing a set of changes to be tested in isolation before being extended to the running application. This enables a live programming workflow with full control over change granularity, immediate feedback on tests, delayed effect on the running application, and coarse-grained undos. We present an implementation of Edit Transactions along with Edit-Transaction-aware tools in Squeak/Smalltalk. We asses this implementation by conducting a case study with and without the new tool support, comparing programming activities, errors, and detours for implementing new functionality in a running simulation. We conclude that workflows using Edit Transactions have the potential to increase confidence in a change, reduce potential for run-time errors, and eventually make live programming more predictable and engaging.
Sperm-Hybrid Micromotor for Targeted Drug Delivery
Creators: name: Xu, Haifeng
name: Medina-Sánchez, Mariana
name: Magdanz, Veronika
name: Schwarz, Lukas
name: Hebenstreit, Franziska
name: Schmidt, Oliver G.
Publisher: name: Washington, DC : Soc.
Year: 2017
Subjects: subject: biohybrid micromotor
subject: drug delivery
subject: gynecologic cancers
subject: in situ mechanical release
subject: sperm
subject: tumor targeting
subject: 540

description: A sperm-driven micromotor is presented as a targeted drug delivery system, which is appealing to potentially treat diseases in the female reproductive tract. This system is demonstrated to be an efficient drug delivery vehicle by first loading a motile sperm cell with an anticancer drug (doxorubicin hydrochloride), guiding it magnetically, to an in vitro cultured tumor spheroid, and finally freeing the sperm cell to deliver the drug locally. The sperm release mechanism is designed to liberate the sperm when the biohybrid micromotor hits the tumor walls, allowing it to swim into the tumor and deliver the drug through the sperm–cancer cell membrane fusion. In our experiments, the sperm cells exhibited a high drug encapsulation capability and drug carrying stability, conveniently minimizing toxic side effects and unwanted drug accumulation in healthy tissues. Overall, sperm cells are excellent candidates to operate in physiological environments, as they neither express pathogenic proteins nor proliferate to form undesirable colonies, unlike other cells or microorganisms. This sperm-hybrid micromotor is a biocompatible platform with potential application in gynecological healthcare, treating or detecting cancer or other diseases in the female reproductive system.
LISA Detection of Binary Black Holes in the Milky Way Galaxy
Creators: name: Christian, Pierre
name: Loeb, Abraham
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Using the black hole merger rate inferred from LIGO, we calculate the abundance of tightly bound binary black holes in the Milky Way galaxy. Binaries with a small semimajor axis ($\lesssim 10 R_\odot$) originate at larger separations through conventional formation mechanisms and evolve as a result of gravitational wave emission. We find that LISA could detect them in the Milky Way. We also identify possible X-ray signatures of such binaries.
description: 8 pages, 2 figures, accepted for publication in MNRAS
Structural and mechanical characterization of heterogeneities in a CuZr-based bulk metallic glass processed by high pressure torsion
Creators: name: Ebner, Christian
name: Escher, Benjamin
name: Gammer, Christoph
name: Eckert, Jürgen
name: Pauly, Simon
name: Rentenberger, Christian
Publisher: name: Amsterdam [u.a.] : Elsevier Science
Year: 2018
Subjects: subject: Bulk metallic glasses
subject: High pressure torsion
subject: Nanoindentation
subject: Rejuvenation
subject: Synchrotron X-ray diffraction
subject: 670

description: Cu45Zr45Al5Ag5 bulk metallic glass samples, processed by high pressure torsion (HPT) under various conditions, were characterized using synchrotron X-ray diffraction, nanoindentation, differential scanning calorimetry, atomic force and transmission electron microscopy. The experimental results clearly show that HPT modifies the amorphous structure by increasing the mean atomic volume. The level of rejuvenation, correlated with the excess mean atomic volume, is enhanced at higher shear strains as inferred from relaxation enthalpies. By mapping of structural and mechanical quantities, the strain-induced rejuvenated state is characterized on cross-sectional HPT samples on a local scale. A clear correlation both between elastic and plastic softening and between softening and excess mean atomic volume is obtained. But also the heterogeneity of the HPT induced rejuvenation is revealed, resulting in the formation of highly strain-softened regions next to less-deformed ones. A hardness drop of up to 20% is associated with an estimated increase of the mean atomic volume of up to 0.75%. Based on synchrotron X-ray diffraction and nanoindentation measurements it is concluded that elastic fluctuations are enhanced in the rejuvenated material on different length scales down to atomic scale. Furthermore, the calculated flexibility volume and the corresponding average mean square atomic displacement is increased. The plastic response during nanoindentation indicates that HPT processing promotes a more homogeneous-like deformation.
Galaxy metallicity scaling relations in the EAGLE simulations
Creators: name: De Rossi, María Emilia
name: Bower, Richard G.
name: Font, Andreea S.
name: Schaye, Joop
name: Theuns, Tom
Publisher: name: arXiv
Year: 2017
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We quantify the correlations between gas-phase and stellar metallicities and global properties of galaxies, such as stellar mass, halo mass, age and gas fraction, in the Evolution and Assembly of GaLaxies and their Environments (EAGLE) suite of cosmological hydrodynamical simulations. The slope of the correlation between stellar mass and metallicity of star-forming (SF) gas ($M_*-Z_{\rm SF,gas}$ relation) depends somewhat on resolution, with the higher-resolution run reproducing a steeper slope. This simulation predicts a non-zero metallicity evolution, increasing by $\approx 0.5$ dex at $\sim 10^9 {\rm M}_{\odot}$ since $z = 3$. The simulated relation between stellar mass, metallicity and star formation rate at $z \lesssim 5$ agrees remarkably well with the observed fundamental metallicity relation. At $M_* \lesssim 10^{10.3} {\rm M}_{\odot}$ and fixed stellar mass, higher metallicities are associated with lower specific star formation rates, lower gas fractions and older stellar populations. On the other hand, at higher $M_*$, there is a hint of an inversion of the dependence of metallicity on these parameters. The fundamental parameter that best correlates with the metal content, in the simulations, is the gas fraction. The simulated gas fraction-metallicity relation exhibits small scatter and does not evolve significantly since $z = 3$. In order to better understand the origin of these correlations, we analyse a set of lower resolution simulations in which feedback parameters are varied. We find that the slope of the simulated $M_*-Z_{\rm SF,gas}$ relation is mostly determined by stellar feedback at low stellar masses ($M_* \lesssim 10^{10} {\rm M}_{\odot}$), and at high masses ($M_* \gtrsim 10^{10} {\rm M}_{\odot}$) by the feedback from active galactic nuclei.
description: 27 pages, 15 figures. Accepted for publication in MNRAS
Quantum noise generated by local random Hamiltonians
Creators: name: Markiewicz, Marcin
name: Puchala, Zbigniew
name: de Rosier, Anna
name: Laskowski, Wieslaw
name: Zyczkowski, Karol
Publisher: name: arXiv
Year: 2016
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the impact of a local random unitary noise on multipartite quantum states of an arbitrary dimension. We follow the dynamical approach, in which the single-particle unitaries are generated by local random Hamiltonians. Assuming short evolution time we derive a lower bound on the fidelity between an initial and the final state transformed by this type of noise. This result is based on averaging the Tamm-Mandelstam bound and holds for a wide class of distributions of random Hamiltonians fulfilling specific symmetry conditions. It is showed how the sensitivity of a given pure quantum state to the discussed type of noise depends on the properties of single-particle and bipartite reduced states.
description: 13 pages, 3 figures
My Leadership Approach
Creators: name: Tasler, Nathalie
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 350707
subject: Leadership
classificationCode: 390403
subject: Educational administration, management and leadership
classificationCode: 390303
subject: Higher education

description: My sister who is a systemic coach, and experienced third sector leader, coached me through a very rough spot on Saturday. At the end of which she jokingly suggested to just make a poster about my leadership approach, to sort my head.If you followed for a while, you know by now that I can never resist a creative challenge. The process of creating, of entering that space of flow has always been an important coping mechanism. From poetry to mixed media art, the creative process is a powerful tool to work through stressors and trauma. So of course I spend some of my Saturday afternoon to make a poster! And my line manager asked if I am going to share it. Well, so here it is, sharing.
Charge transfer from and to manganese phthalocyanine: bulk materials and interfaces
Creators: name: Rückerl, Florian
name: Waas, Daniel
name: Büchner, Bernd
name: Knupfer, Martin
name: Zahn, Dietrich R. T.
name: Haidu, Francisc
name: Hahn, Torsten
name: Kortus, Jens
Publisher: name: Frankfurt, M. : Beilstein-Institut zur Förderung der Chemischen Wissenschaften
Year: 2017
Subjects: subject: Charge transfer
subject: Electronic properties
subject: Manganese phthalocyanine
subject: 620
subject: 540

description: Manganese phthalocyanine (MnPc) is a member of the family of transition-metal phthalocyanines, which combines interesting electronic behavior in the fields of organic and molecular electronics with local magnetic moments. MnPc is characterized by hybrid states between the Mn 3d orbitals and the π orbitals of the ligand very close to the Fermi level. This causes particular physical properties, different from those of the other phthalocyanines, such as a rather small ionization potential, a small band gap and a large electron affinity. These can be exploited to prepare particular compounds and interfaces with appropriate partners, which are characterized by a charge transfer from or to MnPc. We summarize recent spectroscopic and theoretical results that have been achieved in this regard.
The metric dimension of the circulant graph $C(n,\pm\{1,2,3,4\})$
Creators: name: Grigorious, Cyriac
name: Kalinowski, Thomas
name: Ryan, Joe
name: Stephen, Sudeep
Publisher: name: arXiv
Year: 2017
Subjects: subject: Discrete Mathematics (cs.DM)
subject: Combinatorics (math.CO)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: Let $G=(V,E)$ be a connected graph and let $d(u,v)$ denote the distance between vertices $u,v \in V$. A metric basis for $G$ is a set $B\subseteq V$ of minimum cardinality such that no two vertices of $G$ have the same distances to all points of $B$. The cardinality of a metric basis of $G$ is called the metric dimension of $G$, denoted by $\dim(G)$. In this paper we determine the metric dimension of the circulant graphs $C(n,\pm\{1,2,3,4\})$ for all values of $n$.
Carbon nanomaterials sensitize prostate cancer cells to docetaxel and mitomycin C via induction of apoptosis and inhibition of proliferation
Creators: name: Erdmann, Kati
name: Ringel, Jessica
name: Hampel, Silke
name: Wirth, Manfred P.
name: Fuessel, Susanne
Publisher: name: Frankfurt, M. : Beilstein-Institut zur Förderung der Chemischen Wissenschaften
Year: 2017
Subjects: subject: Carbon nanomaterials
subject: Chemosensitization
subject: Docetaxel
subject: Mitomycin C
subject: Prostate cancer cells
subject: 620
subject: 540

description: We have previously shown that carbon nanofibers (CNFs) and carbon nanotubes (CNTs) can sensitize prostate cancer (PCa) cells to platinum-based chemotherapeutics. In order to further verify this concept and to avoid a bias, the present study investigates the chemosensitizing potential of CNFs and CNTs to the conventional chemotherapeutics docetaxel (DTX) and mitomycin C (MMC), which have different molecular structures and mechanisms of action than platinum-based chemotherapeutics. DU-145 PCa cells were treated with DTX and MMC alone or in combination with the carbon nanomaterials. The impact of the monotreatments and the combinatory treatments on cellular function was then systematically analyzed by using different experimental approaches (viability, short-term and long-term proliferation, cell death rate). DTX and MMC alone reduced the viability of PCa cells to 94% and 68%, respectively, whereas a combined treatment with CNFs led to less than 30% remaining viable cells. Up to 17- and 7-fold higher DTX and MMC concentrations were needed in order to evoke a similar inhibition of viability as mediated by the combinatory treatments. In contrast, the dose of platinum-based chemotherapeutics could only be reduced by up to 3-fold by combination with carbon nanomaterials. Furthermore, combinatory treatments with CNFs led mostly to an additive inhibition of short- and long-term proliferation compared to the individual treatments. Also, higher cell death rates were observed in combinatory treatments than in monotreatments, e.g., a combination of MMC and CNFs more than doubled the cell death rate mediated by apoptosis. Combinations with CNTs showed a similar, but less pronounced impact on cellular functions. In summary, carbon nanomaterials in combination with DTX and MMC evoked additive to partly synergistic anti-tumor effects. CNFs and CNTs possess the ability to sensitize cancer cells to a wide range of structurally diverse chemotherapeutics and thus represent an interesting option for the development of multimodal cancer therapies. Co-administration of chemotherapeutics with carbon nanomaterials could result in a reduction of the chemotherapeutic dosage and thus limit systemic side effects.
(Metallo)porphyrins for potential materials science applications
Creators: name: Smykalla, Lars
name: Mende, Carola
name: Fronk, Michael
name: Siles, Pablo F.
name: Hietschold, Michael
name: Salvan, Georgeta
name: Zahn, Dietrich R.T.
name: Schmidt, Oliver G.
name: Rüffer, Tobias
name: Lang, Heinrich
Publisher: name: Frankfurt, M. : Beilstein-Institut zur Förderung der Chemischen Wissenschaften
Year: 2017
Subjects: subject: Atomic force microscopy
subject: Magneto-optical Kerr effect spectroscopy
subject: Scanning tunnelling microscopy and spectroscopy
subject: Self-assembly
subject: Surface-confined 2D polymerization
subject: Transport properties
subject: 620
subject: 540

description: The bottom-up approach to replace existing devices by molecular-based systems is a subject that attracts permanently increasing interest. Molecular-based devices offer not only to miniaturize the device further, but also to benefit from advanced functionalities of deposited molecules. Furthermore, the molecules itself can be tailored to allow via their self-assembly the potential fabrication of devices with an application potential, which is still unforeseeable at this time. Herein, we review efforts to use discrete (metallo)porphyrins for the formation of (sub)monolayers by surface-confined polymerization, of monolayers formed by supramolecular recognition and of thin films formed by sublimation techniques. Selected physical properties of these systems are reported as well. The application potential of those ensembles of (metallo)porphyrins in materials science is discussed.
Confinement sensitivity in quantum dot singlet-triplet relaxation
Creators: name: Wesslén, C. J.
name: Lindroth, E
Publisher: name: arXiv
Year: 2017
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Spin-orbit mediated phonon relaxation in a two-dimensional quantum dot is investigated using different confining potentials. Elliptical harmonic oscillator and cylindrical well results are compared to each other in the case of a two-electron GaAs quantum dot subjected to a tilted magnetic field. The lowest energy set of two-body singlet and triplet states are calculated including spin-orbit and magnetic effects. These are used to calculate the phonon induced transition rate from the excited triplet to the ground state singlet for magnetic fields up to where the states cross. The roll of the cubic Dresselhaus effect and the positioning of "spin hot-spots" are discussed and relaxation rates for a few different systems are exhibited.
JupyterHub as a Service—On-Demand Course-Related JupyterHubs for Research and Teaching (Poster and extended Abstract)
Creators: name: Mittler, Nils
name: Förster, Frank
name: Goesmann, Alexander
name: Linke, Burkhard
Publisher: name: Zenodo
Year: 2023
Subjects: Jupyter Notebook
Jupyter
JupyterHub
cloud-native

description: Jupyter Notebook is a popular tool for writing, documenting, and sharing code. It is a server program that can be run on a local computer and that provides a web-based environment for working with code and data. A JupyterHub forms an organizational layer for Jupyter Notebooks on a server and allows authentication and authorization of users. Using a JupyterHub, it is possible to provide a predefined and uniform software stack for all users of this JupyterHub, which is especially attractive for courses. However, running your own, self-configurable JupyterHub brings challenges in the form of the required resources and knowledge to run a web service. JupyterHub as a Service (JHaaS) addresses this issue by enabling fully automated on-demand deployments of JupyterHub instances in arbitrary Kubernetes clusters. To do this, a course leader requests a JupyterHub from JHaaS and defines a configuration appropriate for that course. A governance can agree to this request, whereupon JHaaS takes care of the deployment of the JupyterHub before the course starts and the deletion after the course ends. Course participants can apply to join the JupyterHub and can be accepted by the course leader. With JHaaS, it is easy to deploy JupyterHub instances for many use cases while giving control over the definition of and the access to the JupyterHub to the course leader. JHaaS is currently in a very early stage of development and is accordingly subject to active change. A trial run in regular courses is planned for the upcoming winter semester of 2023--2024 and our source code is available on GitHub: https://github.com/orgs/JLU-BCF/repositories.
description: FF is funded by the German Research Foundation DFG under the National Research Data Infrastructure–NFDI4Microbiota(NFDI 28/1)–460129525.
Policy-compliant data processing: RDF-based restrictions for data-protection
Creators: name: Lieber, Sven
Publisher: name: Zenodo
Year: 2019
Subjects: RDF
axioms
restrictions
constraints
ontology engineering
privacy

description: Poster for the Doctoral Consortium of ISWC 2019 in Auckland, New Zealand.

 My PhD plan of how to extend Ontology Engineering activities with guidelines regarding the modeling of restrictions, i.e. considering both axioms and constraints.