cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Electronic Structure of New AFFeAs Prototype of Iron Arsenide Superconductors
Creators: name: Nekrasov, I. A.
name: Pchelkina, Z. V.
name: Sadovskii, M. V.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: This work is provoked by recent discovery of new class prototype systems AFFeAs (A=Sr,Ca) of novel layered ironpnictide High-Tc superconductors (Tc=36K). Here we report ab initio LDA results for electronic structure of the AFFeAs systems. We provide detailed comparison between electronic properties of both new systems and reference LaOFeAs (La111) compound. In the vicinity of the Fermi level all three systems have essentially the same band dispersions. However for iron fluoride systems F(2p) states were found to be separated in energy from As(4p) ones in contrast to La111, where O(2p) states strongly overlaps with As(4p). Thus it should be more plausible to include only Fe(3d) and As(4p) orbitals into a realistic noninteracting model than for La111. Moreover Sr substitution with smaller ionic radius Ca in AFFeAs materials leads to a lattice contruction and stronger Fe(3d)-As(4p) hybridization resulting in smaller value of the density of states at the Fermi level in the case of Ca compound. So to some extend Ca system reminds RE111 with later Rare Earths. However Fermi surface of new fluorides is found to be nearly perfect two-dimensional. Also we do not expect strong dependence of superconducting properties with respect to different types of A substitutes.
description: 5 pages, 4 figures
Modelling of hydraulic components for hydroelectric power generating units
Creators: name: Thiessen, Peter Stewart
Publisher: name: University of British Columbia
Year: 2011

description: The thesis deals with a procedure for developing mathematical models of hydraulic components for hydroelectric power generating units. Hydraulic system components modelled are the penstock, reservoir, surge tank, Francis turbine and the wicket gate actuator. A modelling philosophy is suggested. The thesis proposes that for a generator experiencing a sharp transient, such as line breaker reclosing, its capacity to maintain synchronism can be enhanced by taking advantage of waterhammer to sharply reduce the turbine's hydraulic torque input to the generator during the first few swings of the tie-line. Results of computer simulations included support this claim.
Fixed-Attention Mechanism for Deep-Learning-Assisted Design of High-Degree-of-Freedom 3D Metamaterials
Creators: name: Zhang, Huanshu
name: Kang, Lei
name: Campbell, Sawyer D.
name: Zhang, Kaishun
name: Werner, Douglas H.
name: Cao, Zhaolong
Publisher: name: arXiv
Year: 2025
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: The traditional design approaches for high-degree-of-freedom metamaterials have been computationally intensive and, in many cases, even intractable due to the vast design space. In this work, we introduce a novel fixed-attention mechanism into a deep learning framework to address the computational challenges of metamaterial design. We consider a 3D plasmonic structure composed of gold nanorods characterized by geometric parameters and demonstrate that a Long Short-Term Memory network with a fixed-attention mechanism can improve the prediction accuracy by 48.09% compared to networks without attention. Additionally, we successfully apply this framework for the inverse design of plasmonic metamaterials. Our approach significantly reduces computational costs, opening the door for efficient real-time optimization of complex nanostructures.
Conformal invariance from non-conformal gravity
Creators: name: Meissner, Krzysztof A.
name: Nicolai, Hermann
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discuss the conditions under which classically conformally invariant models in four dimensions can arise out of non-conformal (Einstein) gravity. As an `existence proof' that this is indeed possible we show how to derive N=4 super Yang Mills theory with any compact gauge group G from non-conformal gauged N=4 supergravity as a special flat space limit. We stress the role that the anticipated UV finiteness of the (so far unknown) underlying theory of quantum gravity would have to play in such a scheme, as well as the fact that the masses of elementary particles would have to arise via quantum gravitational effects which mimic the conformal anomalies of standard (flat space) UV divergent quantum field theory.
description: 18 pages
AI, Help Me Think$\unicode{x2014}$but for Myself: Assisting People in Complex Decision-Making by Providing Different Kinds of Cognitive Support
Creators: name: Reicherts, Leon
name: Zhang, Zelun Tony
name: von Oswald, Elisabeth
name: Liu, Yuanting
name: Rogers, Yvonne
name: Hassib, Mariam
Publisher: name: arXiv
Year: 2025
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences
subject: I.2; J.4
subject: 68, 91

description: How can we design AI tools that effectively support human decision-making by complementing and enhancing users' reasoning processes? Common recommendation-centric approaches face challenges such as inappropriate reliance or a lack of integration with users' decision-making processes. Here, we explore an alternative interaction model in which the AI outputs build upon users' own decision-making rationales. We compare this approach, which we call ExtendAI, with a recommendation-based AI. Participants in our mixed-methods user study interacted with both AIs as part of an investment decision-making task. We found that the AIs had different impacts, with ExtendAI integrating better into the decision-making process and people's own thinking and leading to slightly better outcomes. RecommendAI was able to provide more novel insights while requiring less cognitive effort. We discuss the implications of these and other findings along with three tensions of AI-assisted decision-making which our study revealed.
description: To be published at ACM CHI 2025 Conference on Human Factors in Computing Systems
Lear-haunted: Shakespeare's last plays
Creators: name: Nairn, John
Publisher: name: University Of Tasmania
Year: 2023

description: This study argues that King Lear and the plays of Shakespeare's final period should be seen as being stylistically and thematically inter related. An introduction places the idea in the light of some modern approaches to King Lear and to Pericles, Cyrribeline, The Winter's Tale I and The Tempest, both in print and in the theatre. This critical context suggests possible objections to the idea as well as encouragement to develop it further. The first chapter looks at stylistic links. King Lear resembles the last plays in style, sharing with them an affinity to the mode of the traditional fairy tale. Elements of the style include romance, fabulation and grotesquerie. The essential serious ness of fairy tales is recognized, showing that Shakespeare is not trivialized by the comparison. A much more specific linkage between the five plays is outlined in the second chapter. This is the theme of daughterhood, for which the fairy-tale style is the 'show-case' or mode of presentation. The outline shows that the theme's main characteristic is the dual centrality of a royal father and his daughter, with marked emphasis on the father's emotional need for the princess. King Lear and the last plays, embodying this theme, form a kind of king-princess series. The argument then considers the development of the theme as narrative in each of the plays, starting (in the fourth chapter) with an examination of how the daughterhood theme is set up in opening scenes. In each case the father seems to be trapped in a web of jealousy and love. He disguises his plight with incredible riddles, love-tests and other psychological games. Up to this point the study finds a haunting similarity between King Lear and the last plays. Shakespeare seems obsessed. The last chapter follows the variations and differences as each play's narrative progresses, suggesting that Shakespeare is experimenting with the Lear-Cordelia paradigm. The concluding inference is that Shakespeare (like Samuel Johnson) was shocked by the ending to King Lear, but that he responded to the 'shock with the art of the last plays. A postlude speculates that a 'real life' basis for Shake speare's daughterhood theme might have been the relationship of Henry VIII with his daughter Elizabeth, and that perhaps this is pointed to in the other 'last- play', Henry VIII.
High Energy Sources Monitored with OMC
Creators: name: Risquez, D.
name: Domingo, A.
name: Caballero-Garcia, M. D.
name: Alfonso-Garzon, J.
name: Mas-Hesse, J. M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The Optical Monitoring Camera on-board INTEGRAL (OMC) provides Johnson V band photometry of any potentially variable source within its field of view. Taking advantage of the INTEGRAL capabilities allowing the simultaneous observation of different kind of objects in the optical, X and gamma rays bands, we have performed a study of the optical counterparts of different high-energy sources. Up to now, OMC has detected the optical counterpart for more than 100 sources from the High Energy Catalog (Ebisawa et al., 2003). The photometrically calibrated light curves produced by OMC can be accessed through our web portal at: http://sdc.laeff.inta.es/omc
description: 4 pages, 4 figures, proceeding included in VIII Reunion Cientifica de la Sociedad Espanyola de Astronomia (Santander, 2008)
Synthesis, electronic properties and OLED devices of chromophores based on λ5‐phosphinines
Creators: name: Pfeifer, Gregor
name: Chahdoura, Faouzi
name: Papke, Martin
name: Weber, Manuela
name: Szűcs, Rózsa
name: Geffroy, Bernard
name: Tondelier, Denis
name: Nyulászi, László
name: Hissler, Muriel
name: Müller, Christian
Publisher: name: Freie Universität Berlin
Year: 2020
Subjects: subject: DFT calculations
subject: heterocycles
subject: OLEDs
subject: phosphinines
subject: pi systems
subject: 500 Naturwissenschaften und Mathematik::540 Chemie::546 Anorganische Chemie

description: A new series of 2,4,6‐triaryl‐λ5‐phosphinines have been synthesized that contain different substituents both on the carbon backbone and the phosphorus atom of the six‐membered heterocycle. Their optical and redox properties were studied in detail, supported by in‐depth theoretical calculations. The modularity of the synthetic strategy allowed the establishment of structure–property relationships for this class of compounds and an OLED based on a blue phosphinine emitter could be developed for the first time.
Re‐examination of the population, stratigraphy, and sequence of Mercurian basins: Implications for Mercury's early impact history and comparison with the moon
Creators: name: Orgel, Csilla
name: Fassett, Caleb I.
name: Michael, Gregory
name: Riedel, Christian
name: Bogert, Carolyn H. Van Der
name: Hiesinger, Harald
Publisher: name: Freie Universität Berlin
Year: 2020
Subjects: subject: Mercury
subject: cratering
subject: impact basins
subject: impactor population
subject: Late Heavy Bombardment
subject: 500 Naturwissenschaften und Mathematik::550 Geowissenschaften, Geologie::551 Geologie, Hydrologie, Meteorologie

description: Mercury has one of the best‐preserved impact records in the inner solar system due to the absence of an atmosphere and relatively unmodified ancient surface. However, our knowledge of the early impact record and the nature of the impacting projectiles are far from complete. To get a better understanding of the early impact history, we examined large impact basins (D ≥ 300 km) on Mercury. Here we cataloged 94 basins, 80 of which we classify as certain or probable, 1.7 times more than previously recognized. We re‐evaluate the crater densities of basins using the buffered nonsparseness correction technique, which we successfully applied for the Moon. In contrast with a previous study, we find that basins have a slightly higher N(300) crater density on Mercury than on the Moon, but similar N(500) basin densities. Based on these results and comparison with the Moon, we infer that no more than half of the basin record remains observable and basins older than Borealis have generally been erased from the basin record. Furthermore, we establish the stratigraphic relationships of basins based on N(25) crater frequencies, absolute model ages, and observations of crosscutting relationships. Similarly to our previous study on the Moon, we found no evidence for a change in the size‐frequency distribution of the impacting population; thus, our results are consistent with a single impactor population that bombarded Mercury's surface.
Antibiotic prescribing decision-making processes in secondary care: a system dynamics approach
Creators: name: Zhu, Nina Jiayue
Publisher: name: Imperial College London
Year: 2018

description: Introduction: To tackle antimicrobial resistance, strategies to reduce inappropriate consumption of antibiotics have been implemented in health systems in the UK. In secondary care, behavioural antimicrobial stewardship (AMS) interventions have had limited effect in optimising doctors’ antibiotic prescribing practices as reflected in the observed deviation from prescribing guidelines. A powerful analytical tool is required to capture the determinants of antibiotic prescribing decision-making within the complexity of the health system to inform intervention design and allow subsequent impact evaluation. Methods: A System Dynamics (SD) model was constructed to enable the simulation of antibiotic prescribing decision-making processes in English hospitals. Literature review, secondary analysis of patient records, healthcare professional interviews and survey responses provided the data from SD model development. A qualitative SD model was formulated and validated through a series of tests to ensure the credibility of the model to simulate doctors’ behaviours under different scenarios. Computer-based simulations were performed to predict doctors’ prescribing outcomes measured by the level of guideline compliance. Results: Maximal improvement in doctors’ guideline compliance at empiric stage could be achieved if senior doctors’ guideline compliance was increased, combined with the microbiology laboratory turnaround time of blood cultures within 24 hours. At review stage, doctors’ decision-making could be enhanced if more opportunities for specialist microbiology input were provided. Improving guideline compliance in junior doctors alone had limited impact on overall prescribing outcomes. Conclusions: SD modelling enables capture of causal mechanisms and prediction of prescribing outcomes by transparent qualitative mapping and quantitative simulation of complex, dynamic prescribing decision-making processes. SD acknowledges that doctors’ sub-optimal antibiotic prescribing is a feature of bounded rationality compounded by multiple contextual interacting influences. AMS interventions can be re-designed for maximum effect with minimal additional resources, if the most influential healthcare professionals and the most critical events in the prescribing decision-making processes are targeted.
Multiscale modelling of asphaltene aggregation properties in crude oils
Creators: name: Law, Ethan Jason
Publisher: name: Imperial College London
Year: 2019

description: The modelling of the behaviour of crude oils is particularly challenging due to the diverse length and time scales involved, and the inherent uncertainty concerning the chemical characterization of the system. Here we describe a framework that spans multiple time, size and complexity scales to provide a richer description of the asphaltene aggregation process. At the bottom of the scale, the Quantitative Molecular Representation (QMR) approach was used to generate a description of plausible molecular structures of asphaltenes and resins based on experimental data from crude oils, consisting of elemental analysis and both 1H and 13C NMR spectroscopy parameters. The behaviour of the QMR-generated model asphaltene structures in heptane and toluene solvents was then determined using a fully atomistic description in classical molecular dynamics (MD) simulations, shedding light upon the incipient clustering mechanisms and the size and distribution of asphaltenes in simple solvents. While simulations at this level of detail are enlightening, current computational resources are insufficient to cover the times required to represent the clustering process. Appropriately, at the next level of scale, coarse-grained (CG) models were built using segments representing multiple atoms, significantly reducing the number of particles and calculations required in the simulation. We used here the Statistical Associating Fluid Theory force field, where the parameters describing the intermolecular potential are obtained from macroscopic thermophysical properties. From this we have produced CG models of asphaltenes, resins and other saturated and aromatic components typical of a live oil. Complex systems composing of realistic mixtures of solvents, resins and multiple asphaltenes in wide ranges of concentrations, pressures and temperatures were then explored with large-scale MD simulations in the μs time scale, in which more than 260 000 CG segments were used to represent over 120 000 molecules. It was observed that only at these larger scales can one fully appreciate the effects of clustering and aggregation in the system. The results indicate that the propensity for asphaltene aggregation is significantly affected by the molecular morphology of asphaltenes.
Quantum effects in optomechanical systems
Creators: name: Genes, C.
name: Mari, A.
name: Vitali, D.
name: Tombesi, P.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The search for experimental demonstrations of the quantum behavior of macroscopic mechanical resonators is a fastly growing field of investigation and recent results suggest that the generation of quantum states of resonators with a mass at the microgram scale is within reach. In this chapter we give an overview of two important topics within this research field: cooling to the motional ground state, and the generation of entanglement involving mechanical, optical and atomic degrees of freedom. We focus on optomechanical systems where the resonator is coupled to one or more driven cavity modes by the radiation pressure interaction. We show that robust stationary entanglement between the mechanical resonator and the output fields of the cavity can be generated, and that this entanglement can be transferred to atomic ensembles placed within the cavity. These results show that optomechanical devices are interesting candidates for the realization of quantum memories and interfaces for continuous variable quantum communication networks.
description: contribution chapter for Advances in Atomic, Molecular and Optical Physics, Volume 57, edited by Ennio Arimondo, Paul R. Berman and C. C. Lin
Taylor bubble rise in circular tubes: steady-states and linear stability analysis
Creators: name: Abubakar, Habib Adebisi
Publisher: name: Imperial College London
Year: 2019

description: Slug flow is one of the flow regimes that is encountered in two-phase gas-liquid flows in pipes. The flow regime is of great interest in many applications such as hydrocarbons production in oil wells and their transportation in pipelines, conventional and nuclear power generation plants, heat an mass transfer operations between gas and liquid in chemical reactors, among many others. Slug flow in vertical tubes is characterised by periodic rise of large bullet-shaped bubbles known as Taylor bubbles separated by pockets of liquids, known as liquid slugs. While numerous studies have been carried out in the areas of estimation of steady state hydrodynamics features of a single Taylor bubble rising in liquids, not much has been done in understanding some of the transitions featuring in this flow. This dissertation focuses on studying the transitions encountered in the dynamics of a rising Taylor bubble. A particular attention is given to the understanding of the mechanism governing the transition of the bubble from symmetric to asymmetric shape in downward liquid flow. This involves three basic steps; computing the steady state solution, examining the stability of the steady state solution and carrying out energy analysis on the stability results. For different flow conditions, characterised by dimensionless Eotvos number (Eo), inverse viscosity number (Nf) and centreline liquid velocity Froude number (Um), we compute the steady state solution of a rising two-dimensional axisymmetric Taylor bubble. The linear stability of the steady state solutions to three-dimensional infinitesimal perturbations are then investigated. The analysis enable us to determine the region in the dimensionless parameters space at which a Taylor bubble transitioned from symmetric to asymmetric shape. To understand the mechanism that govern the instability, we carried out energy budget analysis to isolate the most dominant energy term that drives the instability. The analysis showed that the mechanism that drives the instability is different depending on whether the effect of surface tension can be neglected or not. For region of negligible surface tension effect, the instability originates from inside the bubble and the dominant source of energy that drives the instability is the bubble pressure, while for region where surface tension has strong effect, the instability originates from the liquid phase and the dominant source of energy that drives the instability is the tangential stress.
Araneus alsine Walckenaer 1802
Creators: name: Esyunin, S. L.
name: Kazantsev, D. K
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Araneidae
Araneus
Araneus alsine

description: Araneus alsine (Walckenaer, 1802) * MATERIAL. 1 ♂, 4, Abies forest with whortleberry (Faccinium myrtillus), VIII.2007, DK.
description: Published as part of Esyunin, S. L. & Kazantsev, D. K, 2007, On the spider (Aranei) fauna of the Pechoro - Ilychskiy Reserve (North Urals), with the description of a new Agroeca species (Liocranidae), pp. 245-250 in Arthropoda Selecta 16 (4) on page 246, DOI: 10.5281/zenodo.584085
An examination of the factor structure of the eating disorder examination questionnaire
Creators: name: Nilsson, Jodi
Publisher: name: University Of Tasmania
Year: 2023

description: The purpose of this research was to evaluate the factor structure of the Eating Disorder Examination Questionnaire (EDE-Q). Currently there is a four subscale approach to interpreting results; however, recent findings have indicated varying factor structures, including 1 and 3 factor solutions. This study utilised a large epidemiological sample (N=5255) of Australian women (Mean age = 30.26, SD=7.22). The sample was randomly divided to supply a test, and replication sample. Current factor models were tested using sequential confirmatory factor analysis. The models were tested using mean and variance adjusted weighted least squares (WLSMV) estimations of the tetrachoric correlation matrix. Support was found for a three factor model, comprised of a combined weight and shape factor, a restraint factor, and an eating concern factor. Adjustments were made to refine the supported model. Four items were found to be replicating another similar item, and therefore were removed. Additionally the question assessing fasting, \Avoidance of eating\" was problematic concurring with previous research. The findings of this study support a reduced three subscale structure for the EDE-Q in which the division between weight and shape is removed. Further examination of the methodological problems associated with contagion and question order effects may aid in future research. In considering these findings and those of other researchers there is limited support for the stability of the subscales across different samples and this should be considered in interpreting research utilising the EDE-Q."
The lesser antiphons of the Milanese office : a thematic classification and analysis
Creators: name: Barrington-Foote, Kevin Randle
Publisher: name: University of British Columbia
Year: 2011

description: The repertory of music known as Milanese chant: has only recently attracted the attention of musicologists. In the early part of this century scholars concerned themselves with such aspects of the Milanese rite as its origins, the structure of the liturgy, and paleographic difficulties. The music itself, however, continued to be discussed merely in general terms or in relation to Gregorian melodies. It is only within the last few decades that stylistic analyses of the music have begun to penetrate this relatively unexplored field. This study is principally concerned with the lesser antiphons of the Milanese office. The Introduction summarizes the results of past research into the Milanese rite and presents general information concerning the antiphons. Part I of the thesis presents the Thematic Classification and a discussion of the method employed; the three chapters of Part II deal with the analysis of the melodies. It has been suggested that many of the Milanese antiphons can be grouped together on the basis of common melodic material. Such a classification of the Gregorian antiphons had appeared at the beginning of this century, but no attempt has been made to apply a similar procedure to the Milanese repertory, even though the more stable Milanese tradition would appear to be better suited for such an anlysis than the Gregorian with its numerous and often conflicting sources. The psalter antiphons, the simplest and most numerous of the Milanese office antiphons, have responded readily to a Thematic Classification. The great majority of over seven hundred chants can be reduced to thirty common melodies or "Themes." Many of these Themes can be shown to be related, and the implication is that there were originally only a very few melodies from which other chants were developed. In fact, there would appear to be evidence to show that the antiphons developed, through a process of gradual elaboration from simple reciting-tones. It can be demonstrated that the melodies of the antiphons with longer texts were expanded by the use of a limited number of compositional devices. An examination of the cadences and finals reveals an economy and simplicity which would seem to speak for the antiquity of the Milanese repertory.
Wide-band capacitance measurement on a semiconductor double quantum dot for studying tunneling dynamics
Creators: name: Ota, Takeshi
name: Hayashi, Toshiaki
name: Muraki, Koji
name: Fujisawa, Toshimasa
Publisher: name: arXiv
Year: 2009
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We propose and demonstrate wide-band capacitance measurements on a semiconductor double-quantum dot (DQD) to study tunneling dynamics. By applying phase-tunable high-frequency signals independently to the DQD and a nearby quantum-point-contact charge detector, we perform on-chip lock-in detection of the capacitance associated with the single-electron motion over a wide frequency range from hertz to a few ten gigahertz. Analyzing the phase and the frequency dependence of the signal allows us to extract the characteristic tunneling rates. We show that, by applying this technique to the interdot tunnel coupling regime, quantum capacitance reflecting the strength of the quantum-mechanical coupling can be measured.
description: 14 pages, 3 figures
Engineering hydrogel-based sensing platforms for the detection of circulating cell-free nucleic acid biomarkers
Creators: name: Al Sulaiman, Dana Zaid
Publisher: name: Imperial College London
Year: 2019

description: Circulating cell-free nucleic acids in blood have recently emerged as clinically relevant and minimally invasive cancer biomarkers. However, they are challenging to detect accurately due to their low concentrations, short lengths, and high sequence homology among family members. Thus, currently available technologies to detect such biomarkers lack either sensitivity or specificity and typically rely on complex and costly procedures that are not easily amenable to incorporation into miniaturised devices. The thesis herein presents the design, engineering, and technical validation of three original platform technologies for ultrasensitive (down to single molecule) and highly sequence-specific detection of cell-free nucleic acid biomarkers (either short single-stranded microRNAs or small fragments of double-stranded DNA) from liquid biopsies. Each technology uses carefully engineered physically- or chemically-crosslinked hydrogels to either finely tune or enhance the performances of existing optical and electrical sensing platforms. Firstly, an optical-based sensing strategy for the amplification-free detection of cancer-specific microRNA is presented. It is based on oligonucleotide-templated reactions conducted within physical hydrogels, where the hydrogel matrix improved the limit of detection by four orders of magnitude (0.1 nM) compared to similar reactions carried out in solution. Next, a single-molecule electrical-based platform is developed for the detection of short (=250 bp) clinically relevant cell-free DNA based on hydrogel-filled nanopipettes. By modifying the chemical and physical properties of the hydrogel, it was possible to selectively sample only short DNA fragments and achieve size profiling in a sequence-independent manner. Finally, a skin interstitial fluid sampling platform is engineered based on hydrogel-coated microneedles, which enables cancer-specific microRNA sampling as well as on-chip and off-chip detection capabilities in ~15 min. Because of their versatility, the platforms may be developed in the future to offer multiplexing capabilities and may be integrated into portable clinical devices enabling cheaper, more accurate and timely cancer diagnosis and monitoring based on minimally-invasive liquid biopsies.
Essays on the economics of cryptocurrencies
Creators: name: Iyidogan, Engin
Publisher: name: Imperial College London
Year: 2019

description: This thesis aims to contribute to the understanding of the economics of the cryptocurrency market. In the first chapter, I document the literature on cryptocurrency and the financial applications of blockchain infrastructure. Finance and economics literature on the area of cryptocurrency is relatively new and spans only the last seven years, thus this review intends to serve as a foundation to prompt future work and a deeper understanding of this field. In the second chapter, I develop an equilibrium model of proof-of-work cryptocurrencies. Equilibrium behaviour of miners and users are characterised for exogenous blockchain protocol metrics; I demonstrate that equilibrium between miners and users can be achieved in the long run. High fixed mining rewards are the reason for instability in current cryptocurrency designs. The equilibrium model has two key implications: first, decentralisation and technological improvement in mining are drivers of low transaction fees and low mining costs in a proof-of-work cryptocurrency environment; and second, limited block size and mining difficulty create an incentive mechanism that achieves cryptocurrency sustainability in the long run. In the third chapter, I study the return spillover and systemic risk in the cryptocurrency market in the context of connectedness. The data illustrates that system-wide connectedness in the cryptocurrency market, commonly observed as the level of systemic risk in the literature, changes over time with respect to the adoption rate of cryptocurrencies. Cryptocurrency protocol disputes, malicious activities in the cryptocurrency environment, and negative financial regulations on cryptocurrencies are key sources of increased connectedness over different time periods. Instead, pairwise connectedness between cryptocurrency pairs can be explained by cryptocurrency fundamentals.
Balance and Abelian complexity of the Tribonacci word
Creators: name: Richomme, Gwénaël
name: Saari, Kalle
name: Zamboni, Luca Q.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 68R15

description: G. Rauzy showed that the Tribonacci minimal subshift generated by the morphism $τ: 0\mapsto 01, 1\mapsto 02 and 2\mapsto 0$ is measure-theoretically conjugate to an exchange of three fractal domains on a compact set in $R^2$, each domain being translated by the same vector modulo a lattice. In this paper we study the Abelian complexity AC(n) of the Tribonacci word $t$ which is the unique fixed point of $τ$. We show that $AC(n)\in {3,4,5,6,7}$ for each $n\geq 1$, and that each of these five values is assumed. Our proof relies on the fact that the Tribonacci word is 2-balanced, i.e., for all factors $U$ and $V$ of $t$ of equal length, and for every letter $a \in {0,1,2}$, the number of occurrences of $a$ in $U$ and the number of occurrences of $a$ in $V$ differ by at most 2. While this result is announced in several papers, to the best of our knowledge no proof of this fact has ever been published. We offer two very different proofs of the 2-balance property of $t$. The first uses the word combinatorial properties of the generating morphism, while the second exploits the spectral properties of the incidence matrix of $τ$.
description: 20 pages, 1 figure. This is an extended version of 0904.2872v1
Araneus sturmi Hahn 1831
Creators: name: Esyunin, S. L.
name: Kazantsev, D. K
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Araneidae
Araneus
Araneus sturmi

description: Araneus sturmi (Hahn, 1831) * MATERIAL. 1 ♀ (PSU- 4649), I, bottomland meadow, 03.VII.2007, DK; 2 ♂♂, 8 ♀♀, 2, Picea forests with green moss or with whortleberry (Facciniummyrtillus) and green moss, bottomland herbage Picea forest, meadow, VI & VIII.2007, DK.
description: Published as part of Esyunin, S. L. & Kazantsev, D. K, 2007, On the spider (Aranei) fauna of the Pechoro - Ilychskiy Reserve (North Urals), with the description of a new Agroeca species (Liocranidae), pp. 245-250 in Arthropoda Selecta 16 (4) on page 246, DOI: 10.5281/zenodo.584085
Molekulare Paläontologie - "Auferweckung" urzeitlicher Proteine
Creators: name: Merkl, Rainer
name: Straub, Kristina
name: Sterner, Reinhard
Publisher: name: Blick in die Wissenschaft
Year: 2020

description: Proteine (Eiweiße) sind die wesentlichen Funktionsträger allen Lebens. Sie bestehen aus einer spezifischen, linearen Abfolge (Sequenz) von unterschiedlichen Aminosäuren. Diese Aminosäuresequenz legt eine räumliche Struktur fest, welche wiederum die Funktion eines Proteins definiert. Es ist eine interessante Frage, wie sich Aminosäuresequenzen und damit die Eigenschaften von einzelnen Proteinen im Laufe der biologischen Evolution verändert haben. In diesem Zusammenhang sind Informationen über Proteine aus dem letzten gemeinsamen Vorfahren aller heute existierenden Lebewesen (englisch: last universal common ancestor, LUCA) besonders aufschlussreich. Da der LUCA die Erde bereits vor etwa 3,5 bis 3,8 Milliarden Jahren bevölkerte, sind keine molekularen Fossilien erhalten, die es ermöglichen würden, etwas über die Eigenschaften dieser urzeitlichen Proteine in Erfahrung zu bringen. In den letzten Jahren wurden jedoch Computer-basierte Insilico-Verfahren entwickelt, welche die »Auferweckung« und Charakterisierung dieser LUCA-Proteine ermöglichen. Ihr Vergleich mit »modernen« Proteinen erlaubt Einblicke in die Gesetzmäßigkeiten der Proteinevolution und zusätzlich in den Zusammenhang zwischen der Aminosäuresequenz von Proteinen und ihrer Struktur und Funktion.
description: Blick in die Wissenschaft, Bd. 29 Nr. 41 (2020): Blick in die Wissenschaft 41
An Infinite Fractal Cosmos
Creators: name: Oldershaw, Robert L.
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: The paradigmatic transition from a small finite universe to an infinite unbounded fractal cosmos is briefly put into historical context and discussed.
description: 7 pages, published in Journal of Cosmology, Vol. 4, 674-677
Making vortices in dipolar spinor condensates via rapid adiabatic passage
Creators: name: Zhang, J. -N.
name: He, L.
name: Pu, H.
name: Sun, C. -P.
name: Yi, S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We propose to the create vortices in spin-1 condensates via magnetic dipole-dipole interaction. Starting with a polarized condensate prepared under large axial magnetic field, we show that by gradually inverting the field, population transfer among different spin states can be realized in a controlled manner. Under optimal condition, we generate a doubly quantized vortex state containing nearly all atoms in the condensate. The resulting vortex state is a direct manifestation of the dipole-dipole interaction and spin textures in spinor condensates. We also point out that the whole process can be qualitatively described by a simple rapid adiabatic passage model.
description: 4 pages, 4 figures
Constraint on the growth factor of the cosmic structure from the damping of the baryon acoustic oscillation signature
Creators: name: Nakamura, Gen
name: Huetsi, Gert
name: Sato, Takahiro
name: Yamamoto, Kazuhiro
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We determine a constraint on the growth factor by measuring the damping of the baryon acoustic oscillations in the matter power spectrum using the Sloan Digital Sky Survey luminous red galaxy sample. The damping of the BAO is detected at the one sigma level. We obtain σ_8D_1(z=0.3) = 0.42^{+0.34}_{-0.28} at the 1σstatistical level, where σ_8 is the root mean square overdensity in a sphere of radius 8h^{-1}Mpc and D_1(z) is the growth factor at redshift z. The above result assumes that other parameters are fixed and the cosmology is taken to be a spatially flat cold dark matter universe with the cosmological constant.
description: 6pages, 7 figures
The application of planning-programming-budgeting-systems (PPBS) to project expenditure classification in the Canadian federal government
Creators: name: Royce, Paul Joseph
Publisher: name: University of British Columbia
Year: 2011

description: The objective of this study is to investigate planning-programming-budgeting systems (PPBS) as a method for rationalizing public expenditure decisions, and the evaluation of subsequent performance within the framework of the Canadian Federal Government. Based on a research of the literature, the rationale for such a system is presented, together with a detailed description of its operational mechanics, impact and areas which might cause difficulty in its practical implementation throughout the Federal Government. An operational casting study from a small field organization is presented to illustrate the data requirements and the problem of obtaining the relevant information with a traditional budgeting system. The thesis concludes that despite the commitment to PPBS at the Cabinet and Senior Executive level within the Canadian Federal Government, this has not yet penetrated to the operational managers in the field departments who will be increasingly required to think in these terms if the approach is to be successfully implemented throughout the sphere of government operations. Several recommendations are made to enable the approach to be installed at the operational level, not the least of which is a management education programme to outline the concepts, aims and requirements of PPBS as it affects managers at this level. The measurement of benefits and the problem of joint costs are mentioned as two vital areas which have as yet not been fully considered within the government and are overdue far detailed study. In conclusion it is hoped that this dissertation outlines the disparity between the allocation process as it is outlined by senior government officials, and the process as it actually occurs within the field, making suggestions to enable the PPBS approach to be both accepted and workable at the field organisation level.
Araniella displicata Hentz 1847
Creators: name: Esyunin, S. L.
name: Kazantsev, D. K
Publisher: name: Zenodo
Year: 2007
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Araneidae
Araniella
Araniella displicata

description: Araniella displicata (Hentz, 1847) MATERIAL. 2 ♀♀, 2, bog with dwarf Betula and grass, VI & VIII.2007, DK.
description: Published as part of Esyunin, S. L. & Kazantsev, D. K, 2007, On the spider (Aranei) fauna of the Pechoro - Ilychskiy Reserve (North Urals), with the description of a new Agroeca species (Liocranidae), pp. 245-250 in Arthropoda Selecta 16 (4) on page 246, DOI: 10.5281/zenodo.584085
I capricci d'un Re digitale
Creators: name: Conti, Elisa
Publisher: name: Zenodo
Year: 2023
Subjects: DSE
codifica
EVT

description: Poster per il XII convegno annuale di AIUCD (Siena, 5-7 giugno 2023, www.aiucd2023.unisi.it).
description: Il progetto nasce nel contesto del master Infotext dell'Università degli studi di Siena.
Wie steuert man ein Mitfahrnetzwerk?
Creators: name: Lukesch, Maximilian
Publisher: name: Blick in die Wissenschaft
Year: 2020

description: In der Sharing Economy wird versucht, ungenutzte Kapazitäten zu vermarkten. Ein populäres Beispiel hierfür sind Mitfahrdienste. Wer freitags am Busbahnhof der Universität Regensburg steht, der kennt das Prinzip: Auf der Parkfläche vor der Mensa treffen sich im Viertelstunden-Takt Fahrende und Mitfahrende, man begrüßt einander, verlädt das Gepäck, die Fahrt beginnt. Mitfahrgelegenheiten sind Alltag. Häufig sind sie Produkt eines Mitfahrnetzwerks. Allein beim Branchenführer Blablacar werden nach dessen Angaben weltweit jedes Quartal 20 Millionen Reisende für Fahrgemeinschaften vermittelt. Im Gegensatz zu einem Unternehmen, das eine Transportdienstleistung durch seine eigenen – und daher in ihrem Einsatz gestaltbaren – Betriebsmittel und Personal erbringt, ist der Mitfahrdienst »nur« eine Vermittlungsplattform im Internet. Wie ein Regensburger Forschungsbeitrag (Lukesch 2019) zeigt, sollte ein Mitfahrdienst aber weit mehr tun als »nur« zu vermitteln. Er muss es schaffen, seine Nutzerinnen und Nutzer zu »richtigem« Verhalten zu bewegen. Doch was heißt das und wie kann das gelingen? Wie steuert man ein Mitfahrnetzwerk?
description: Blick in die Wissenschaft, Bd. 29 Nr. 41 (2020): Blick in die Wissenschaft 41
PneuDrive: An Embedded Pressure Control System and Modeling Toolkit for Large-Scale Soft Robots
Creators: name: Johnson, Curtis C.
name: Cheney, Daniel G.
name: Cordon, Dallin L.
name: Killpack, Marc D.
Publisher: name: arXiv
Year: 2025
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: In this paper, we present a modular pressure control system called PneuDrive that can be used for large-scale, pneumatically-actuated soft robots. The design is particularly suited for situations which require distributed pressure control and high flow rates. Up to four embedded pressure control modules can be daisy-chained together as peripherals on a robust RS-485 bus, enabling closed-loop control of up to 16 valves with pressures ranging from 0-100 psig (0-689 kPa) over distances of more than 10 meters. The system is configured as a C++ ROS node by default. However, independent of ROS, we provide a Python interface with a scripting API for added flexibility. We demonstrate our implementation of PneuDrive through various trajectory tracking experiments for a three-joint, continuum soft robot with 12 different pressure inputs. Finally, we present a modeling toolkit with implementations of three dynamic actuation models, all suitable for real-time simulation and control. We demonstrate the use of this toolkit in customizing each model with real-world data and evaluating the performance of each model. The results serve as a reference guide for choosing between several actuation models in a principled manner. A video summarizing our results can be found here: https://bit.ly/3QkrEqO.
description: Proceedings of the 2024 IEEE 7th International Conference on Soft Robotics (RoboSoft)
Performance Management of Corporate Venturing Activities in Manufacturing Companies: An Exploratory Study
Creators: name: Schuh, Günther
name: Budweiser, Leonie Angela
name: Lademann, Frederic
Publisher: name: Hannover : publish-Ing.
Year: 2023
Subjects: subject: Corporate Venturing
subject: Separate Innovation Units
subject: Technology Management
subject: Performance Management
subject: Radical Innovation
subject: Innovation Management
subject: Dewey Decimal Classification::600 | Technik

description: Recent trends in manufacturing industries such as digitalization and sustainability have underlined the need for companies to significantly change their products and processes. This emphasizes the need for the capability to make use of radical innovations (radical innovation). However, many incumbent companies struggle to reliably create radical innovation since their research and development (R&D) is usually optimized to exploit competencies via incremental innovations. Thus, their innovation processes and setups fit the predictable and structurable needs of incremental innovation. In contrast, radical innovation are less predictable and, thus, require more agile and reactive processes. To benefit from startup-like structures, manufacturing companies started to increasingly use corporate venturing (CV) activities in the early 2010s. However, the performance of established forms of CV differs drastically. Also, there are still no definite findings on how to set up and use a performance management system to reliably increase CV performance. Therefore, this paper aims to explore the insights of practitioners on which problems and challenges occur in the innovation process of CV units and how they could be solved using performance management systems. To achieve this, the research includes an interview study with 17 different companies of the manufacturing sector in German-speaking countries which run a CV unit.
Ein Rezept für ein gesundes Altern?
Creators: name: Dahmen-Zimmer, Katharina
name: Jansen, Petra
Publisher: name: Blick in die Wissenschaft
Year: 2020

description: Auch wenn sich die Bewegung heute nicht mehr natürlich in unser Leben integrieren lässt, wird ihre Bedeutung unter anderem für die ältere Bevölkerung zum Erhalt der kognitiven, emotionalen und physischen Gesundheit verstärkt wahrgenommen. In drei Studien untersuchten wir den Effekt der Sportart Karate auf das gesunde Altern und bei Patienten mit Morbus Parkinson. Karate wurde als eine Sportart ausgewählt, die sowohl kognitive als auch motorische Elemente kombiniert. In allen drei Studien zeigte sich, dass Karate (trainiert entsprechend dem Regelwerk des Deutschen-Karate-Verbandes) im Alter und selbst mit einer Bewegungsstörung gut zu praktizieren ist. Einzelne positive, statistisch signifikante Effekte wurden nachgewiesen, so zum Beispiel bezogen auf die kognitive Verarbeitungsgeschwindigkeit und die Balance. Die ersten Arbeiten sind vielversprechend, doch die Forschung in diesem Bereich bewegt sich im Spannungsfeld zwischen Wissenschaftlichkeit und Machbarkeit. Eine Zusammenarbeit von Medizinerinnen, Sportwissenschaftlerinnen, Psychologinnen und auch Informatikerinnen ist für dieses vielversprechende Forschungsfeld wünschenswert.
description: Blick in die Wissenschaft, Bd. 29 Nr. 41 (2020): Blick in die Wissenschaft 41
INVENIO End of Life (PubDB)
Creators: name: Köhler, Martin
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2023

description: DESY Bibliothekskommission, Hamburg, DESY, Germany, 20 Nov 2023 - 20 Nov 2023
description: Slides of the library commission session 2023