cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Improved in vitro test procedure for full assessment of the cytocompatibility of degradable magnesium based on ISO 10993-5/-12
Creators: name: Klein, Martin
name: Wegner, Nils
name: Walther, Frank
name: Stangier, Dominic
name: Jung, Ole
name: Smeets, Ralf
name: Hartjen, Philip
name: Schnettler, Reinhard
name: Feyerabend, Frank
name: Henningsen, Anders
name: Rendenbach, Carsten
name: Heiland, Max
name: Barbeck, Mike
name: Kopp, Alexander
Publisher: name: TU Dortmund
Year: 2019
Subjects: subject: Magnesium
subject: ISO10993-5/-12
subject: PEO
subject: Degradation
subject: Biocompatibility
subject: Implant
subject: 660

description: Magnesium (Mg)-based biomaterials are promising candidates for bone and tissue regeneration. Alloying and surface modifications provide effective strategies for optimizing and tailoring their degradation kinetics. Nevertheless, biocompatibility analyses of Mg-based materials are challenging due to its special degradation mechanism with continuous hydrogen release. In this context, the hydrogen release and the related (micro-) milieu conditions pretend to strictly follow in vitro standards based on ISO 10993-5/-12. Thus, special adaptions for the testing of Mg materials are necessary, which have been described in a previous study from our group. Based on these adaptions, further developments of a test procedure allowing rapid and effective in vitro cytocompatibility analyses of Mg-based materials based on ISO 10993-5/-12 are necessary. The following study introduces a new two-step test scheme for rapid and effective testing of Mg. Specimens with different surface characteristics were produced by means of plasma electrolytic oxidation (PEO) using silicate-based and phosphate-based electrolytes. The test samples were evaluated for corrosion behavior, cytocompatibility and their mechanical and osteogenic properties. Thereby, two PEO ceramics could be identified for further in vivo evaluations.
description: International journal of molecular sciences;Jg. 20, Heft 2. S. 255-1-255-20
Structural Transitions and Dynamical Regimes for Directional Locking of Particles Driven over Periodic Substrates
Creators: name: Reichhardt, C.
name: Reichhardt, C. J. Olson
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We numerically investigate collective ordering and disordering effects for vortices in type-II superconductors interacting with square and triangular substrate arrays under a dc drive that is slowly rotated with respect to the fixed substrate. A series of directional locking transitions occur when the particle motion locks to symmetry directions of the substrate, producing a series of steps in the velocity-force curves. The locking transitions coincide with structural transitions between triangular, square, smectic, or disordered particle arrangements, which can be identified using the structure factor. We show that the widths of the locking steps pass through local minima and maxima as a function of the ratio of the number of particles to the number of substrate minima. Unlike a static system, where matching effects occur for simple integer commensuration ratios, our system exhibits dynamical commensuration effects where an integer number of particle chains flow between one-dimensional lines of substrate minima. As the system enters and exits the locking steps, order-disorder transitions in the structure of the moving particle assembly occur. We identify two distinct symmetry locking regimes as a function of substrate strength which produce different locking step characteristics. For weak substrates, all the particles are in motion and a portion of the particles flow through the substrate minima, leading to structural transitions at certain driving angles. For strong substrates, some particles are permanently pinned while the remaining particles flow around them. At the crossover between these two regimes of substrate strength, the locking steps are destroyed due to the onset of chaotic plastic flow which produces pronounced changes in the transport characteristics. Similar effects occur for colloidal particles driven over square and triangular substrate arrays.
description: 28 pages, 23 postscript figures
Chiral tunneling in single and bilayer graphene
Creators: name: Tudorovskiy, T.
name: Reijnders, K. J. A.
name: Katsnelson, M. I.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We review chiral (Klein) tunneling in single-layer and bilayer graphene and present its semiclassical theory, including the Berry phase and the Maslov index. Peculiarities of the chiral tunneling are naturally explained in terms of classical phase space. In a one-dimensional geometry we reduced the original Dirac equation, describing the dynamics of charge carriers in the single layer graphene, to an effective Schrödinger equation with a complex potential. This allowed us to study tunneling in details and obtain analytic formulas. Our predictions are compared with numerical results. We have also demonstrated that, for the case of asymmetric n-p-n junction in single layer graphene, there is total transmission for normal incidence only, side resonances are suppressed.
description: submitted to Proceedings of Nobel Symposium on graphene, May 2010
PREDICTORS, MECHANISMS, AND DIVERSITY IN HUMAN-ANIMAL INTERACTION RESEARCH
Creators: name: Jensen, Clare L
Publisher: name: Purdue University Graduate School
Year: 2023
Subjects: Other agricultural, veterinary and food sciences not elsewhere classified

description: There has been substantial growth in recent decades in the variety and popularity of roles for dogs assisting humans in professional therapeutic partnerships. Simultaneously, increasingly rigorous research has repeatedly demonstrated the effects of professional human-canine partnerships in remedying important issues of public health among several at-risk populations. Yet, despite these areas of growth, mechanisms of action and predictors of efficacy in the field of human-animal interaction (HAI) remain poorly understood, and the role of human diversity has been rarely discussed. Thus, the present dissertation examines potential mechanisms and diverse predictors in two distinct samples of professional human-canine partnerships, while building the impetus to explore diversity in the HAI field as a whole. For the first three studies (Chapters 2-4), the selected samples of professional human-canine partnerships include military veterans working with psychiatric service dogs to mediate their symptoms of PTSD and healthcare professionals in pediatric hospitals working with facility dogs to benefit their patients. Following the introduction in Chapter 1, the objective of Chapters 2-3 was to examine primary human outcomes in the selected professional canine partnerships. In a crosssectional study of N=198 military veterans with PTSD, Chapter 2 compared PTSD symptom severity between n=112 veterans with service dogs and n=86 veterans on the waitlist to receive service dogs in the future. Next, in a cross-sectional study of N=130 healthcare professionals in pediatric hospitals, Chapter 3 compared job-related well-being and mental health of n=65 professionals working with facility dogs to n=65 working without. Findings suggested benefits to the mental health and well-being of both military veterans with PTSD and pediatric healthcare professionals, which were significantly associated with their professional canine partnerships. Subsequently, the objective of Chapter 4 was to explore how variances within a specific professional canine partnership may suggest predictors and potential mechanisms for the observed human outcomes. Thus, in a longitudinal study of N=82 veterans with PTSD and their service dogs, Chapter 4 explored associations of veterans’ outcomes with veteran-service dog demographics and interactions. Results suggested components of the human-canine partnership which might explain observed human outcomes, including social connections, a calming influence, and strong humananimal bonds.
AH3-manifolds of constant antiholomorphic sectional curvature
Creators: name: Kassabov, Ognian
Publisher: name: arXiv
Year: 2010
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53B35

description: The following theorem is proved: If an AH3-manifold M of dimension greather or equal to 6 is of pointwise constant antiholomorphic sectional curvature, then M is a real space form or a complex space form.
description: 6 pages, MR 88f:53067
Higgs Discovery through Top-Partners using Jet Substructure
Creators: name: Kribs, Graham D.
name: Martin, Adam
name: Roy, Tuhin S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Top-partners -- vector-like quarks which mix predominantly with the top quark -- are simple extensions of the standard model present in many theories of new physics such as little Higgs models, topcolor models, and extra dimensions. Through renormalizable mixing with the top quark, these top-partners inherit couplings to the Higgs boson. Higgs bosons produced from the decay of top-partners are often highly boosted and ideal candidates for analyses based on jet substructure. Using substructure methods, we show that light Higgs bosons decaying to b b-bar can be discovered at the 14 TeV LHC with less than 10 inverse fb for top-partner masses up to 1 TeV.
description: 11 pages, 7 figures
डॉ. आंबेडकरांचा राज्य समाजवाद आणि शेतीविषयक आर्थिक धोरण
Creators: name: Bagde, Rakshit
Publisher: name: figshare
Year: 2021
Subjects: subject: 130205 Humanities and Social Sciences Curriculum and Pedagogy (excl. Economics, Business and Management)
subject: FOS: Educational sciences
subject: Economics
subject: 140201 Agricultural Economics
subject: FOS: Economics and business
subject: 140204 Economics of Education
subject: 140219 Welfare Economics

description: Dr. Babasaheb Ambedkar was a great economist of modern India. He was a great son of Mother India. He is well known as the architect of the Indian Constitution. He excelled in various disciplines, from jurisprudence, sociology, political science to anthropology and comparative theology, and gained scholarly recognition. ‘He was also recognized as a great social reformer, human rights activist, savior of the downtrodden, academician, MP, and journalist.’ Although agriculture is the backbone of the Indian economy, it has not been able to provide a secure livelihood for the majority of the population. Despite the ability of Indian agriculture to feed one-third of the Indian population, agriculture has not progressed. Dr. Land reform, land fragmentation, and partition are important issues in Ambedkar's economic thinking. In order to solve the problems of creation in the case of Indian agriculture, Dr. Ambedkar introduced land consolidation, collective farming, etc. Similar measures are stated. Dr. Ambedkar had emphasized the nationalization of agriculture to solve the problems related to agriculture. ‘Nationalization of agriculture will eliminate economic slavery and help create an economically prosperous state. Practicing community farming will help increase productivity in agriculture. It will help in increasing the efficiency of the workers and agricultural laborers and their economic development. By raising the living standards of the farmers, they will get economic prosperity. 'All the above thoughts are important and shed light on the country's economy. Without the industrialization of agriculture, the problem of landless laborers will not be solved, said Dr. Ambedkar had an opinion. The separation of industries from agriculture is dangerous for the economy. The problem of farmers will be solved only if the agro-processing industries are expanded along with agriculture. "Industrialization, especially in rural areas, as well as improved agriculture will be used to provide employment to the workers of the country," he said. Ambedkar always thought so. Dr. Ambedkar has treated various questions of agriculture from an economic point of view. Not only sound education but his alertness and dedication too are most required.
BIOLOGICAL SAFETY OF COWS' MILK UNDER THE CONDITIONS OF TECHNOGENIC AGRICULTURAL ECOSPHERE WHEN USING BIOLOGICALLY ACTIVE SUBSTANCES
Creators: name: Donnik, Irina
Publisher: name: TUENGR Group
Year: 2019
Subjects: technogenic agricultural pollution
diary produce
chemical substances
biologically active substances
biological safety
Heavy metal.

description: International Transaction Journal of Engineering, Management, & Applied Sciences & Technologies, 10, 2, 203-209
Statistical mechanics of collisionless relaxation in a noninteracting system
Creators: name: de Buyl, Pierre
name: Mukamel, David
name: Ruffo, Stefano
Publisher: name: arXiv
Year: 2010
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We introduce a model of uncoupled pendula, which mimics the dynamical behavior of the Hamiltonian Mean Field (HMF) model. This model has become a paradigm for long-range interactions, like Coulomb or dipolar forces. As in the HMF model, this simplified integrable model is found to obey the Vlasov equation and to exhibit Quasi Stationary States (QSS), which arise after a "collisionless" relaxation process. Both the magnetization and the single particle distribution function in these QSS can be predicted using Lynden-Bell's theory. The existence of an extra conserved quantity for this model, the energy distribution function, allows us to understand the origin of some discrepancies of the theory with numerical experiments. It also suggests us an improvement of Lynden-Bell's theory, which we fully implement for the zero field case.
description: 15 pages, 8 figures, accepted in Philosophical Transactions of the Royal Society A
Effects of critical temperature inhomogeneities on the voltage-current characteristics of a planar superconductor near the Berezinskii-Kosterlitz-Thouless transition
Creators: name: Coton, Noelia
name: Ramallo, Manuel V.
name: Vidal, Felix
Publisher: name: arXiv
Year: 2011
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We analyze numerically how the voltage-current (V-I) characteristics near the so-called Berezinskii-Kosterlitz-Thouless (BKT) transition of 2D superconductors are affected by a random spatial Gaussian distribution of critical temperature inhomogeneities with long characteristic lengths (much larger than the in-plane superconducting coherence length amplitude). Our simulations allow to quantify the broadening around the average BKT transition temperature of both the exponent alpha in V I^alpha and of the resistance V/I. These calculations reveal that strong spatial redistributions of the local current will occur around the transition as either I or the temperature T are varied. Our results also support that the condition alpha=3 provides a good estimate for the location of the average BKT transition temperature, and that extrapolating to alpha->1 the alpha(T) behaviour well below the transition provides a good estimate for the average mean-field critical temperature.
description: 18 pages; pdfLaTeX; 1 TeX file + 8 PDF files for figures (figs.1,2,3a,3b,4,5a,5b,6)
Low voltage control of exchange coupling in aferromagnet-semiconductor quantum well hybridstructure
Creators: name: Korenev, Vladimir L.
name: Kalitukha, I. V.
name: Akimov, Ilya A.
name: Sapega, V. F.
name: Zhukov, Evgeny A.
name: Kirstein, Erik
name: Ken, O. S.
name: Kudlacik, Dennis
name: Karczewski, G.
name: Wiater, M.
name: Wojtowicz, T.
name: Ilyinskaya, N. D.
name: Lebedeva, N. M.
name: Komissarova, T. A.
name: Kusrayev, Yu.G.
name: Yakovlev, Dmitri R.
name: Bayer, Manfred
Publisher: name: TU Dortmund
Year: 2019
Subjects: subject: Ferromagnetism
subject: Spintronics
subject: 530
subject: Ferromagnetismus
subject: Spintronik

description: Voltage control of ferromagnetism on the nanometer scale is highly appealing for the development of novel electronic devices with low power consumption, high operation speed, reliable reversibility and compatibility with semiconductor technology. Hybrid structures based on the assembly of ferromagnetic and semiconducting building blocks are expected to show magnetic order as a ferromagnet and to be electrically tunable as a semiconductor. Here, we demonstrate the electrical control of the exchange coupling in a hybrid consisting of a ferromagnetic Co layer and a semiconductor CdTe quantum well, separated by a thin non-magnetic (Cd,Mg)Te barrier. The electric field controls the phononic ac Stark effect—the indirect exchange mechanism that is mediated by elliptically polarized phonons emitted from the ferromagnet. The effective magnetic field of the exchange interaction reaches up to 2.5 Tesla and can be turned on and off by application of 1V bias across the heterostructure.
description: Nature communications;
Functional approaches to infrared Yang-Mills theory in the Coulomb gauge
Creators: name: Weber, A.
name: Leder, M.
name: Pawlowski, J. M.
name: Reinhardt, H.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present the current status of ongoing efforts to use functional methods, Dyson-Schwinger equations and functional renormalization group equations, for the description of the infrared regime of nonabelian (pure) gauge theories in the Coulomb gauge. In particular, we present a new determination of the color-Coulomb potential with the help of the functional renormalization group that results in an almost linearly rising potential between static color charges at large spatial distances.
description: 11 pages, 3 figures. Slightly improved version of J. Phys.: Conf. Ser. 287 (2011) 012023
Mathematical Modeling with Applications to SARS-CoV-2
Creators: name: Vo, MyVan
Publisher: name: Purdue University Graduate School
Year: 2023
Subjects: Biological mathematics

description: We developed a mathematical model to investigate the transmission dynamics of SARS-CoV-2, the virus responsible for the COVID-19 pandemic. Our main model is built on the Susceptible-Exposed-Infected-Recovered framework to account for the unique characteristics of COVID-19. In a particular case of the main model, we assessed the optimal allocation of resources to mitigate the spread of the virus. Additionally, we expanded the main model to include another vaccination compartment to explore the strategic distribution of vaccinations. Our findings provided insights into the management of COVID-19 and could guide evidence-based decision-making for public health authorities.
Nuclear quantum effects in ab initio dynamics: theory and experiments for lithium imide
Creators: name: Ceriotti, Michele
name: Miceli, Giacomo
name: Pietropaolo, Antonino
name: Colognesi, Daniele
name: Nale, Angeloclaudio
name: Catti, Michele
name: Bernasconi, Marco
name: Parrinello, Michele
Publisher: name: arXiv
Year: 2010
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: Owing to their small mass, hydrogen atoms exhibit strong quantum behavior even at room temperature. Including these effects in first principles calculations is challenging, because of the huge computational effort required by conventional techniques. Here we present the first ab-initio application of a recently-developed stochastic scheme, which allows to approximate nuclear quantum effects inexpensively. The proton momentum distribution of lithium imide, a material of interest for hydrogen storage, was experimentally measured by inelastic neutron scattering experiments and compared with the outcome of quantum thermostatted ab initio dynamics. We obtain favorable agreement between theory and experiments for this purely quantum mechanical property, thereby demonstrating that it is possible to improve the modelling of complex hydrogen-containing materials without additional computational effort.
Urban Factories – Establishing resource-efficiency in production logistics systems in cities
Creators: name: Kreuz, Felix
name: Bucherer, Michael
name: Juraschek, Max
name: Clausen, Uwe
Publisher: name: TU Dortmund
Year: 2020
Subjects: subject: urban factories
subject: urban logistics
subject: sustainable development
subject: resource-efficiency
subject: 620
subject: 670
subject: Fabrik
subject: Standortplanung
subject: Stadtplanung
subject: City-Logistik
subject: Nachhaltigkeit
subject: Ressourceneffizienz

description: Cities are a hotspot for resource consumption and related impacts. This is induced, among others, by transportation, production and the use of products and services. Industrial production is commonly associated with negative impacts, e.g. on the environment or traffic. Through positive integration of production sites into urban surroundings, negative impacts can be eliminated, and even positive impacts achieved. To reach a higher degree of integration of different utilizations in cities, resource-efficiency, new conceptual approaches are required for urban factories, city authorities and further stakeholders. For this purpose, a methodology has been developed that describes the planning processes of the involved disciplines and their interdependencies concerning content and timing. Subsequently, an analysis of Urban Factories within a reference framework called the factory-city-system and its key resources is carried out in an exemplary case study. Measures to enhance resource-efficiency are thus dentified, exemplarily described and examined regarding their potential to raise resource-efficiency.
Geometric origin of coincidences and hierarchies in the landscape
Creators: name: Bousso, Raphael
name: Freivogel, Ben
name: Leichenauer, Stefan
name: Rosenhaus, Vladimir
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We show that the geometry of cutoffs on eternal inflation strongly constrains predictions for the timescales of vacuum domination, curvature domination, and observation. We consider three measure proposals: the causal patch, the fat geodesic, and the apparent horizon cutoff, which is introduced here for the first time. We impose neither anthropic requirements nor restrictions on landscape vacua. For vacua with positive cosmological constant, all three measures predict the double coincidence that most observers live at the onset of vacuum domination and just before the onset of curvature domination. The hierarchy between the Planck scale and the cosmological constant is related to the number of vacua in the landscape. These results require only mild assumptions about the distribution of vacua (somewhat stronger assumptions are required by the fat geodesic measure). At this level of generality, none of the three measures are successful for vacua with negative cosmological constant. Their applicability in this regime is ruled out unless much stronger anthropic requirements are imposed.
description: 34 pages, 5 figures
A 33 GHz VSA survey of the Galactic plane from 27 to 46 degrees
Creators: name: Todorović, M.
name: Davies, R. D.
name: Dickinson, C.
name: Davis, R. J.
name: Cleary, K. A.
name: Genova-Santos, R.
name: Grainge, K. J. B.
name: Hafez, Y. A.
name: Hobson, M. P.
name: Jones, M. E.
name: Lancaster, K.
name: Rebolo, R.
name: Reich, W.
name: Rubiño-Martin, J. A.
name: Saunders, R. D. E.
name: Savage, R. S.
name: Scott, P. F.
name: Slosar, A.
name: Taylor, A. C.
name: Watson, R. A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The Very Small Array (VSA) has been used to survey the l = 27 to 46 deg, |b|<4 deg region of the Galactic plane at a resolution of 13 arcmin. The survey consists of 44 pointings of the VSA, each with a r.m.s. sensitivity of ~90 mJy/beam. These data are combined in a mosaic to produce a map of the area. The majority of the sources within the map are HII regions. We investigated anomalous radio emission from the warm dust in 9 HII regions of the survey by making spectra extending from GHz frequencies to the FIR IRAS frequencies. Acillary radio data at 1.4, 2.7, 4.85, 8.35, 10.55, 14.35 and 94 GHz in addition to the 100, 60, 25 and 12 micron IRAS bands were used to construct the spectra. From each spectrum the free-free, thermal dust and anomalous dust emission were determined for each HII region. The mean ratio of 33 GHz anomalous flux density to FIR 100 micron flux density for the 9 selected HII regions was 1.10 +/-0.21x10^(-4). When combined with 6 HII regions previously observed with the VSA and the CBI, the anomalous emission from warm dust in HII regions is detected with a 33 GHz emissivity of 4.65 +/- 0.4 micro K/ (MJy/sr) at 11.5σ. The anomalous radio emission in HII regions is on average 41+/-10 per cent of the radio continuum at 33 GHz.
description: 18 pages, 11 figures, accepted for publication in MNRAS
Getting More for Less: Using Weak Labels and AV-Mixup for Robust Audio-Visual Speaker Verification
Creators: name: Selvakumar, Anith
name: Fashandi, Homa
Publisher: name: arXiv
Year: 2023
Subjects: subject: Sound (cs.SD)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: Multimedia (cs.MM)
subject: Audio and Speech Processing (eess.AS)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Distance Metric Learning (DML) has typically dominated the audio-visual speaker verification problem space, owing to strong performance in new and unseen classes. In our work, we explored multitask learning techniques to further enhance DML, and show that an auxiliary task with even weak labels can increase the quality of the learned speaker representation without increasing model complexity during inference. We also extend the Generalized End-to-End Loss (GE2E) to multimodal inputs and demonstrate that it can achieve competitive performance in an audio-visual space. Finally, we introduce AV-Mixup, a multimodal augmentation technique during training time that has shown to reduce speaker overfit. Our network achieves state of the art performance for speaker verification, reporting 0.244%, 0.252%, 0.441% Equal Error Rate (EER) on the VoxCeleb1-O/E/H test sets, which is to our knowledge, the best published results on VoxCeleb1-E and VoxCeleb1-H.
description: Accepted to INTERSPEECH 2024
A case study for the formation of stanene on a metal surface
Creators: name: Maniraj, Mahalingam
name: Stadtmüller, Benjamin
name: Jungkenn, Dominik
name: Düvel, Marten
name: Emmerich, Sebastian
name: Shi, Wujun
name: Stökl, Johannes
name: Lyu, L.
name: Kollamana, J.
name: Wei, Z.
name: Jurenkow, A.
name: Jakobs, S.
name: Yan, B.
name: Steil, Sabine
name: Cinchetti, Mirko
name: Mathias, Stefan
name: Aeschlimann, Martin
Publisher: name: TU Dortmund
Year: 2019
Subjects: subject: Electronic devices
subject: Electronic properties and materials
subject: Surfaces, interfaces and thin films
subject: Topological insulators
subject: Two-dimensional materials
subject: 530

description: The discovery and realization of graphene as an ideal two-dimensional (2D) material has triggered extensive efforts to create similar 2D materials with exciting spin-dependent properties. Here, we report on a novel Sn 2D superstructure on Au(111) that shows similarities and differences to the expected electronic features of ideal stanene. Using spin- and angle-resolved photoemission spectroscopy, we ﬁnd that a particular Sn/Au superstructure reveals a linearly dispersing band centered at the Γ-point and below the Fermi level with antiparallel spin polarization and a Fermi velocity of vF ≈ 1×106 m/s, the same value as for graphene. We attribute the origin of the band structure to the hybridization between the Sn and the Au orbitals at the 2D Sn-Au interface. Considering that free-standing stanene simply cannot exist, our investigated structure is an important step towards the search of useful stanene-like overstructures for future technological applications.
description: Communications physics;Vol. 2. 2019, 12:1-9
A study of an educational game for learning programming
Creators: name: McKee-Scott, Jamie
Publisher: name: University of British Columbia
Year: 2015

description: Introductory, first-year programming classes are challenging for many students. Unlike other first year science courses, computer science is not required for entry to most first-year science programs, and students struggle with bug hunting and code planning, especially if they have never programmed before. This thesis introduces the development of a web-based educational game, called Code Age, as a tool for supporting the learning of basic programming concepts. Code Age is a mini-game style game designed to be used at the students convenience, and currently consists of three minigames related to introductory programming concepts encountered throughout the process of learning programming. A pilot study was designed to evaluate the prototype in terms of using mini-games for learning, finding the correct measures for evaluating engagement, and continuing the project. The pilot study consisted of a heuristic evaluation and usability study. The heuristic evaluation found few usability errors in the software, which did not impact the results and analysis of the usability study. The usability study contained three questionnaires, the Intrinsic Motivation Inventory, an engagement pre/post-test, and a usability questionnaire. The IMI showed that students found value and enjoyment from the game. The engagement questionnaire was adapted from the NSSE and its results showed promise, despite the fact that the study did not have enough participants and the adapted questions were too course-oriented. Suggestions for modified questions are proposed. The usability study demonstrated that student opinion of the mini-games was diverse, but a wide variety of games is necessary to maintain engagement and throughout these games, the balance between conceptual and physical challenge must be given much attention. The pilot study ultimately concluded that the engagement questionnaire needed revision, the mini-games were a good choice, and the system was intuitive and easy to use despite the usability errors. Finally, the study showed that even the students who did not care for Code Age itself felt that games are useful to help learning and to help learning programming.
Fragebogen zur Erfassung von Fachwissen bezogen auf Orthographie (FaWo) - Version A
Creators: name: Hüninghake, Rebecca
name: Kuhl, Jan
Publisher: name: TU Dortmund
Year: 2020
Subjects: subject: Fachwissen
subject: Professionelle Kompetenz
subject: Fragebogen
subject: Orthographie
subject: Orthografie
subject: 370
subject: Fachwissen
subject: Fragebogen
subject: Rechtschreibung

description: Der Fragebogen erfasst das professionelle Fachwissen von Lehramtsstudierenden bezogen auf die deutsche Orthographie. Er liegt in zwei Versionen vor, die sich lediglich in der Abfolge der Items unterscheiden (Version A und Version B).
Functional diversity in cover crops and ecosystem services
Creators: name: Furey, George Neil
Publisher: name: University of British Columbia
Year: 2015

description: Management of our agroecosystems faces a dual problem where we need to produce more food, fiber and fuel with the same amount of land while limiting the impact of this production on the earth’s biodiversity and environment. A solution to this problem is to manage agroecosystems for augmented biodiversity to increase the provision of Ecosystem Services (ES). Increasing on-farm diversity can improve ES beyond the provision of food to help reduce the use of environmentally costly inputs through ES provision such as growing nitrogen-fixing plants to supply nitrogen to food crops in lieu of other inputs. Cover crops are plants that can be grown temporal or spatially isolated from food crops with limited negative impacts on yield and can provide significant positive impacts to both the farmer’s profitability and the environment. Increasing the biodiversity of cover crops is one key strategy to sustainably intensify agriculture by helping to improve yields while limiting the environmental impact of agricultural production. To determine if increasing cover crop biodiversity leads to greater ES provision, experiments were conducted that manipulated cover crop functional diversity in three settings, a field trial at the UBC Farm, a pot experiment in the UBC Horticultural Greenhouse, and a litter-bag study at the UBC Farm. A functional group framework was applied to cover crops using a grass (Rye Secale cereale L.), a legume (Lana Vetch Vicia villosa ssp. dasycarpa Roth.) and a forb (Chicory Cichorium intybus L.) in mixtures of varying degrees of diversity. The general conclusion from these analyses was that mixtures were capable of providing a comparable magnitude of ES to the best monoculture while providing a range of ES greater than any one monoculture. In monoculture, rye was the best for carbon fixation (biomass production and CO₂ uptake) and weed suppression; Lana vetch was the best for improving soil fertility (nitrogen and phosphorus release); and chicory was the best for soil cover (leaf area) and residue decomposition. There was sufficient evidence to support the use of cover crop mixtures to provide ES that reduce the environmental impact of agricultural production with potential to improve crop yields.
New Galactic Star Clusters Discovered in the VVV Survey
Creators: name: Borissova, Jura
name: Bonatto, Charles
name: Kurtev, Radostin
name: Clarke, James R. A.
name: Peñaloza, Francisco
name: Sale, Stuart E.
name: Minniti, Dante
name: Alonso-García, Javier
name: Artigau, Étienne
name: Barbá, Rodolfo
name: Bica, Eduardo
name: Baume, Gustavo Luis
name: Catelan, Márcio
name: Chené, André-Nicolas
name: Dias, Bruno
name: Folkes, Stuart L.
name: Froebrich, Dirk
name: Geisler, Doug
name: de Grijs, Richard
name: Hanson, Margaret M.
name: Hempel, Maren
name: Ivanov, Valentin D.
name: Kumar, M. S. Nanda
name: Lucas, Philip
name: Mauro, Francesco
name: Bidin, Christian Moni
name: Rejkuba, Marina
name: Saito, Roberto K.
name: Tamura, Motohide
name: Toledo, Ignacio
Publisher: name: arXiv
Year: 2011
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: VISTA Variables in the V\'ıa Láctea (VVV) is one of the six ESO Public Surveys operating on the new 4-meter Visible and Infrared Survey Telescope for Astronomy (VISTA). VVV is scanning the Milky Way bulge and an adjacent section of the disk, where star formation activity is high. One of the principal goals of the VVV Survey is to find new star clusters of different ages. In order to trace the early epochs of star cluster formation we concentrated our search in the directions to those of known star formation regions, masers, radio, and infrared sources. The disk area covered by VVV was visually inspected using the pipeline processed and calibrated $K_{\rm S}$-band tile images for stellar overdensities. Subsequently, we examined the composite $JHK_{\rm S}$ and $ZJK_{\rm S}$ color images of each candidate. PSF photometry of $15\times15$ arcmin fields centered on the candidates was then performed on the Cambridge Astronomy Survey Unit reduced images. After statistical field-star decontamination, color-magnitude and color-color diagrams were constructed and analyzed. We report the discovery of 96 new infrared open clusters and stellar groups. Most of the new cluster candidates are faint and compact (with small angular sizes), highly reddened, and younger than 5\,Myr. For relatively well populated cluster candidates we derived their fundamental parameters such as reddening, distance, and age by fitting the solar-metallicity Padova isochrones to the color-magnitude diagrams.
description: 15 pages, 10 figures, A&A accepted
The temperature of hot gas in galaxies and clusters: baryons dancing to the tune of dark matter
Creators: name: Hansen, Steen H.
name: Macció, Andrea V.
name: Romano-Diaz, Emilio
name: Hoffman, Yehuda
name: Brüggen, Marcus
name: Scannapieco, Evan
name: Stinson, Greg S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The temperature profile of hot gas in galaxies and galaxy clusters is largely determined by the depth of the total gravitational potential and thereby by the dark matter (DM) distribution. We use high-resolution hydrodynamical simulations of galaxy formation to derive a surprisingly simple relation between the gas temperature and DM properties. We show that this relation holds not just for galaxy clusters but also for equilibrated and relaxed galaxies at radii beyond the central stellar-dominated region of typically a few kpc. It is then clarified how a measurement of the temperature and density of the hot gas component can lead to an indirect measurement of the DM velocity anisotropy in galaxies. We also study the temperature relation for galaxy clusters in the presence of self-regulated, recurrent active galactic nuclei (AGN), and demonstrate that this temperature relation even holds outside the inner region of 30 kpc in clusters with an active AGN.
description: 10 pages, 7 figures
Industrielle Montage - 1/2011
Creators: name: Deuse, Jochen
name: Lotter, Bruno
name: Lotter, Edwin
Publisher: name: TU Dortmund
Year: 2012
Subjects: subject: Demographischer Wandel
subject: Ergonomische Teilebereitstellung
subject: Globalisierung
subject: Industrielle Montage
subject: Manuelle Großgerätemontage
subject: Stanzen Formen Montieren
subject: Variantenreiche Fliessmontage
subject: 620
subject: 670

description: Der Anbietermarkt hat sich zum Käufermarkt entwickelt; das früher schmale Produktspektrum wird durch eine immer breitere Angebotspalette mit zahlreichen Varianten abgelöst und führt zur Verkürzung der Produktlebensdauer, zu kleiner werdenden Losgrößen und zu einem enormen Preisdruck. Zum Erhalt oder zur Wiedergewinnung der Wettbewerbsfähigkeit muss die industrielle Montage auf flexible, wandlungsfähige und wirtschaftliche Betriebsmittel mit hohem Wiederverwendungswert zurückgreifen können. Um die Anwender über neue, den Anforderungen gerecht werdende Montageeinrichtungen zu informieren, reichen Inserate mit Kurzbeschreibungen in der allgemeinen Fachpresse nicht mehr aus. Die Arbeitsgemeinschaft "Industrielle Montage" hat sich mit der Herausgabe dieser Informationsschrift zur Aufgabe gemacht, "Anwender-orientierte Betriebe" umfassend über neue Technologien der Montage zu informieren. Die Informationsschrift wird zwei- bis dreimal pro Jahr erscheinen.
description: Busch, F.; Deuse, J.: Herausforderungen der variantenreichen Fließmontage
description: Lotter, B.; Kelz, A.: Stanzen – Formen – Montieren
description: Lotter, B.; Pausch H. P.: Ergonomische Teilebereitstellung in der manuellen Großgerätemontage
description: Lotter, B.: Weltmarktglobalisierung u. demografischer Wandel der Belegschaft LP Montagetechnik GmbH
description: Industrielle Montage;1/2011
Data telemetry
Creators: name: Kavehei, Omid
Publisher: name: figshare
Year: 2023
Subjects: Biomedical instrumentation
Medical devices

description: Codes for an optical wireless data telemetry solution. This is part of the supporting material for "A miniaturized and low-energy subcutaneous optical telemetry module for neurotechnology" article accepted (in April 2023) to be published in the Journal of Neural Engineering.
Radiation Transfer of Models of Massive Star Formation. I. Dependence on Basic Core Properties
Creators: name: Zhang, Yichen
name: Tan, Jonathan C.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Radiative transfer calculations of massive star formation are presented. These are based on the Turbulent Core Model of McKee & Tan and self-consistently included a hydrostatic core, an inside-out expansion wave, a zone of free-falling rotating collapse, wide-angle dust-free outflow cavities, an active accretion disk, and a massive protostar. For the first time for such models, an optically thick inner gas disk extends inside the dust destruction front. This is important to conserve the accretion energy naturally and for its shielding effect on the outer region of the disk and envelope. The simulation of radiation transfer is performed with the Monte Carlo code of Whitney, yielding spectral energy distributions (SEDs) for the model series, from the simplest spherical model to the fiducial one, with the above components each added step-by-step. Images are also presented in different wavebands of various telescope cameras, including Spitzer IRAC and MIPS, SOFIA FORCAST and Herschel PACS and SPIRE. The existence of the optically thick inner disk produces higher optical wavelength fluxes but reduces near- and mid-IR emission. The presence of outflow cavities, the inclination angle to the line of sight, and the thickness of the disk all affect the SEDs and images significantly. For the high mass surface density cores considered here, the mid-IR emission can be dominated by the outflow cavity walls, as has been suggested by De Buizer. The effect of varying the pressure of the environment bounding the surface of the massive core is also studied. With lower surface pressures, the core is larger, has lower extinction and accretion rates, and the observed mid-IR flux from the disk can then be relatively high even though the accretion luminosity is lower. In this case the silicate absorption feature becomes prominent, in contrast to higher density cores forming under higher pressures.
description: 19 pages, 14 figures, 2 tables, accepted for publication in ApJ
title: Army of Islam
title: Army of Islam
Creators: name: Murgul, Yalçın
Publisher: name: BSB - Bavarian State Library
Year: 2020
Subjects: subject: Weltkrieg [1914-1918]
subject: Kaukasus
subject: World War, 1914-1918
subject: Caucasus

description: The Army of Islam, which was created by the order of Enver Pasha dated 5 April 1918, was a military force that performed operations in the summer of 1918 which resulted in the expansion of Ottoman military and political power in the Caucasus. Commanded by Enver’s brother Nuri Pasha, this army was supported by the Azerbaijani national forces and newly founded Azerbaijani government in Ganja. The most important achievement of this military unit was the capture of Baku on 15 September 1918.
description: 1914-1918-Online International Encyclopedia of the First World War
description: 1914-1918-Online International Encyclopedia of the First World War
Computation with competing patterns in Life-like automaton
Creators: name: Martinez, Genaro J.
name: Adamatzky, Andrew
name: Morita, Kenichi
name: Margenstern, Maurice
Publisher: name: arXiv
Year: 2011
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: Cellular Automata and Lattice Gases (nlin.CG)
subject: FOS: Physical sciences

description: We study a Life-like cellular automaton rule $B2/S2345$ where a cell in state `0' takes state `1' if it has exactly two neighbors in state `1' and the cell remains in the state `1' if it has between two and five neighbors in state `1.' This automaton is a discrete analog spatially extended chemical media, combining both properties of sub-excitable and precipitating chemical media. When started from random initial configuration B2/S2345 automaton exhibits chaotic behavior. Configurations with low density of state `1' show emergence of localized propagating patterns and stationary localizations. We construct basic logical gates and elementary arithmetical circuits by simulating logical signals with mobile localizations reaction propagating geometrically restricted by stationary non-destructible localizations. Values of Boolean variables are encoded into two types of patterns --- symmetric (False) and asymmetric (True) patterns --- which compete for the `empty' space when propagate in the channels. Implementations of logical gates and binary adders are illustrated explicitly.
description: Chapter in In: A. Adamatzky (Ed.), ISBN 9781849962162
The instability of some time periodically forced flows
Creators: name: Sagoo, Gursharan
Publisher: name: Imperial College London
Year: 2018

description: In this thesis the instability of two viscous incompressible flows is discussed by using numerical and analytical methods. The first problem concerns the steady streaming flow, that is contained within a hollow stationary cylinder and induced by the transverse oscillation of a solid inner cylinder. The small gap limit is taken so that a series solution in odd powers of the angular variable is possible. From the studies by Hall & Papageorgiou [37] and Watson et al. [97], it is known that the leading order equation has solutions that are steady, quasi-periodic and chaotic (period doubling). Since all the higher order equations are driven by the solution at leading order; the series solution for the steady streaming flow is investigated with an interest to determine any chaotic structures. The second problem concerns the flow in a horizontal circular pipe, that is subject to torsional oscillations about a vertical axis that passes symmetrically through the pipe. The onset of a new axisymmetric roll-type instability, as observed experimentally by Bolton & Maurer [10] for the corresponding rectangular tank problem (of small width), is sought in the high-frequency (Phi >> 1) and small-amplitude limit (alpha <<1). A perturbation of the WKBJ type is imposed upon the basic state, so that the slow angular variation of the disturbance is accounted for in the linear stability equations. Accordingly, a dispersion relation for the dimensionless frequency parameter Phi is derived. In order to identify the most dangerous disturbance, it is necessary to minimise the eigenvalue B = alpha/Phi^(1/4). The theory of Soward & Jones [82] is used to show that an acceptable solution of the governing eigenvalue problem, cannot be obtained for real values of the latitudinal variable theta; instead, the correct minimum is found in the complex theta-plane.
The Status of Black-Hole Binary Merger Simulations with Numerical Relativity
Creators: name: McWilliams, Sean T.
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The advent of long-term stability in numerical relativity has yielded a windfall of answers to long-standing questions regarding the dynamics of space-time, matter, and electromagnetic fields in the strong-field regime of black-hole binary mergers. In this review, we will briefly summarize the methodology currently applied to these problems, emphasizing the most recent advancements. We will discuss recent results of astrophysical relevance, and present some novel interpretation. Though we primarily present a review, we also present a simple analytical model for the time-dependent Poynting flux from two orbiting black holes immersed in a magnetic field, which compares favorably with recent numerical results. Finally, we will discuss recent advancements in our theoretical understanding of merger dynamics and gravitational waveforms that have resulted from interpreting the ever-growing body of numerical relativity results.
description: Invited review for NRDA/CAPRA 2010, CQG special issue - 7 pages, 1 figure, 1 table