cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
An Highly Integrated Double Conversion Mixer MMIC
for Ka-band VSAT Communication Systems
Creators: name: Lefebvre, B.
name: Bessemoulin, A.
name: Schwoerer, C.
name: Lehoue, V.
name: Vaudescal, O.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2004
Subjects: ING-INF/01 Elettronica

description: For use as up-converter in Ka-band VSAT
outdoor units, an highly integrated mixer with a double
input for balanced operation was designed. This self-bias
double conversion mixer MMIC has been designed in order
to ease the integration, reduce the size, and finally reach the
cost requirements for such systems. The mixer is a
multifunction chip, which integrates two frequency doublers
and a cold FET mixer for a chip size of only 2.88 mm2. Such
a compactness was achieved thanks to a 0.25-µm
Pseudomorphic-HEMT process using MIM capacitors over
via holes. The mixer exhibits broadband performance, with
up-converter loss of only 8 dB for an LO power of +10 dBm
and 10-GHz IF frequency.
Maximal subgroups of free idempotent generated semigroups over the full linear monoid
Creators: name: Dolinka, Igor
name: Gray, Robert
Publisher: name: arXiv
Year: 2011
Subjects: subject: Group Theory (math.GR)
subject: FOS: Mathematics
subject: 20M05, 20F05, 15A99, 57M15

description: We show that the rank r component of the free idempotent generated semigroup of the biordered set of the full linear monoid of n x n matrices over a division ring Q has maximal subgroup isomorphic to the general linear group GL_r(Q), where n and r are positive integers with r < n/3.
description: 37 pages; Transactions of the American Mathematical Society (to appear). arXiv admin note: text overlap with arXiv:1009.5683 by other authors
Rationalising the Formation and Properties of Novel Main-Group Complexes Using Computational Methods
Creators: name: Smith, Cory
Publisher: name: Monash University
Year: 2021
Subjects: subject: 30204 Main Group Metal Chemistry
subject: FOS: Chemical sciences
subject: Inorganic Chemistry
subject: Computational Chemistry

description: As the field of main-group chemistry generates compounds containing unusual structural motifs, novel bonds, and non-trivial oxidation states, computational methods are required to gain an in-depth understanding of these systems. This thesis describes the use of these methods on five experimental investigations, leading to the rationalisation of products formed through multiple theoretical techniques. Additionally, reaction profiles are generated to elucidate mechanisms and highlight key intermediates and transition states. Finally, driving forces for product formation are investigated through aromaticity calculations, resulting in the observation of multiple main-group complexes displaying aromaticity – a feature usually seen in organic systems.
Uniqueness of canonical tensor model with local time
Creators: name: Sasakura, Naoki
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Canonical formalism of the rank-three tensor model has recently been proposed, in which "local" time is consistently incorporated by a set of first class constraints. By brute-force analysis, this paper shows that there exist only two forms of a Hamiltonian constraint which satisfies the following assumptions: (i) A Hamiltonian constraint has one index. (ii) The kinematical symmetry is given by an orthogonal group. (iii) A consistent first class constraint algebra is formed by a Hamiltonian constraint and the generators of the kinematical symmetry. (iv) A Hamiltonian constraint is invariant under time reversal transformation. (v) A Hamiltonian constraint is an at most cubic polynomial function of canonical variables. (vi) There are no disconnected terms in a constraint algebra. The two forms are the same except for a slight difference in index contractions. The Hamiltonian constraint which was obtained in the previous paper and behaved oddly under time reversal symmetry can actually be transformed to one of them by a canonical change of variables. The two-fold uniqueness is shown up to the potential ambiguity of adding terms which vanish in the limit of pure gravitational physics.
description: 21 pages, 12 figures. The final result unchanged. Section 5 rewritten for clearer discussions. The range of uniqueness commented in the final section. Some other minor corrections
On a Gauss-Kuzmin-Type Problem for a Family of Continued Fraction Expansions
Creators: name: Lascu, Dan
Publisher: name: arXiv
Year: 2011
Subjects: subject: Number Theory (math.NT)
subject: Probability (math.PR)
subject: FOS: Mathematics
subject: 11J70, 11K50, 28D05, 60A10

description: In this paper we study in detail a family of continued fraction expansions of any number in the unit closed interval $[0,1]$ whose digits are differences of consecutive non-positive integer powers of an integer $m \geq 2$. For the transformation which generates this expansion and its invariant measure, the Perron-Frobenius operator is given and studied. For this expansion, we apply the method of random systems with complete connections by Iosifescu and obtained the solution of its Gauss-Kuzmin type problem.
description: This paper has been withdrawn by the author due to a change of the team of authors
Physics-Based Low-Frequency Noise Modelling in
Small- and Large-Signal RF Device Operation
Creators: name: Conte, G.
name: Donati Guerrieri, S.
name: Bonani, F.
name: Ghione, G.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2004
Subjects: ING-INF/01 Elettronica

description: The paper presents a generalized Green’s function
approach to the simulation of trap-assisted generationrecombination (GR) noise in RF devices. By exploiting a few noninteracting trap levels, the superposition of the corresponding (stationary) GR spectra is shown, in a simple yet significant case study, to reproduce a 1/f or 1/f-like behaviour over a prescribed frequency range. The same trap distribution is also exploited for large-signal, cyclostationary noise simulations in forced periodic conditions. In this case, frequency conversion effects are present, and the low-frequency noise is shown to be upconverted from
baseband to the other noise sidebands. The frequency conversion effects are also investigated in the case of a junction diode.
Reading and Discussing Popular Media to Increase SEA-PHAGES Student Engagement
Creators: name: Johnson, Allison
name: Westholm, Daniel
name: Reyna, Nathan
Publisher: name: QUBES Educational Resources
Year: 2021

description: This module introduces ways for students to connect their SEA-PHAGES work and real life medical trials with events presented in Arrowsmith, Sinclair Lewis’s 1925 Pulitzer prize winning novel on phage therapy. Here we present ways to incorporate discussion
Integration of components in a 50 nm InGaAs-
InAlAs-InP HEMT process with pseudomorphic
In0.65Ga0.35As channel
Creators: name: Mellberg, Anders
name: Malmkvist, Mikael
name: Grahn, Jan
name: Rorsman, Niklas
name: Zirath, Herbert
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2004
Subjects: ING-INF/01 Elettronica

description: The basic active and passive elements for a
50 nm InGaAs-InAlAs-InP HEMT process with
pseudomorphic InGaAs channel have been realized. The
design and fabrication of 50 nm gate length InP HEMTs,
MIM capacitors and thin film resistors have been studied.
The integration of the components in a microstrip-based
MMIC process has been proven by the successful
demonstration of a wideband amplifier.
Complexity of Ising Polynomials
Creators: name: Kotek, Tomer
Publisher: name: arXiv
Year: 2011
Subjects: subject: Computational Complexity (cs.CC)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: Combinatorics (math.CO)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: This paper deals with the partition function of the Ising model from statistical mechanics, which is used to study phase transitions in physical systems. A special case of interest is that of the Ising model with constant energies and external field. One may consider such an Ising system as a simple graph together with vertex and edge weights. When these weights are considered indeterminates, the partition function for the constant case is a trivariate polynomial Z(G;x,y,z). This polynomial was studied with respect to its approximability by L. A. Goldberg, M. Jerrum and M. Paterson in 2003. Z(G;x,y,z) generalizes a bivariate polynomial Z(G;t,y), which was studied by D. Andrén and K. Markström in 2009. We consider the complexity of Z(G;t,y) and Z(G;x,y,z) in comparison to that of the Tutte polynomial, which is well-known to be closely related to the Potts model in the absence of an external field. We show that Z(G;\x,\y,\z) is #P-hard to evaluate at all points in $mathbb{Q}^3$, except those in an exception set of low dimension, even when restricted to simple graphs which are bipartite and planar. A counting version of the Exponential Time Hypothesis, #ETH, was introduced by H. Dell, T. Husfeldt and M. Wahlén in 2010 in order to study the complexity of the Tutte polynomial. In analogy to their results, we give a dichotomy theorem stating that evaluations of Z(G;t,y) either take exponential time in the number of vertices of $G$ to compute, or can be done in polynomial time. Finally, we give an algorithm for computing Z(G;x,y,z) in polynomial time on graphs of bounded clique-width, which is not known in the case of the Tutte polynomial.
IF-noise improvement of the GaAs Schottky diodes
for THz-frequency mixer applications
Creators: name: Cojocari, O.
name: Biber, S.
name: Mottet, B.
name: Sydlo, C.
name: Hartnagel, H.-L.
name: Schmidt, L.-P.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2004
Subjects: ING-INF/01 Elettronica

description: GaAs-Schottky-diodes are a key-element of
millimetre-, submillimetre-wave and THz-frequency mixer
and multiplier systems. This paper presents the evaluation
of sub-micrometer-size Pt/n-GaAs anode fabrication
technology based on electrochemical metal deposition for
planar Schottky-diodes. The technological approach for
low-noise Pt/n-GaAs Schottky diode fabrication has been
first optimised for whisker-contacted diodes and then
successfully transferred to the fabrication of planar
structures using a “dummy anodes” structural approach.
The IF-noise temperature of planar diodes is significantly
lower than that of whisker-contacted diodes. Excess noise
of whisker-contacted anodes is attributed to temperature
effects which are reduced in the planar quasi-vertical
design. The effect of thermal annealing on IF noise
temperature of planar structures is investigated using a
“single step” method. In contrast to non-annealed samples,
no evident threshold of the noise temperature is observed
up to 3mA of bias current for thermally annealed samples.
This strongly suggests that RIE-induced defects in the
GaAs surface may generate trap noise at a few GHz.
However this can be effectively reduced by thermal
annealing. The optimisation of the fabrication technology
results in very good DC-characteristics and excellent noise
temperature of planar Schottky diodes for THz mixer
applications.
The resounding body : epistemologies of sound, healing, and complementary and alternative medicine on Canada's West Coast
Creators: name: Caballero, Rodrigo
Publisher: name: University of British Columbia
Year: 2014

description: The main claim of this dissertation is that practices of sound healing are driven by a skepticism towards how conventional medicine conceptualizes and treats the body. Therefore, sound healing in thought and practice may be seen as revolving around an implicit desire to redefine the body, health, and listening. I refer to this as “negating the biomedical body” and show how it is underscored by frequent recourse to medical concepts adopted from complementary and alternative medicine. This dissertation illustrates how practitioners’ negating of the biomedical body as well as their deeply embodied conception of listening and sound bear surprising consistency across a variety of sound healing practices. In this sense, sound healing is caught up in changing values regarding health, medicine, and healthcare delivery in the contemporary west. Notwithstanding its antithetical stance, however, sound healing can also be further understood when its dialectical relation to science and medicine is considered. In practice this unstable and problematic relationship is most pronounced in the contradiction between practitioners’ negating of the biomedical body (rooted in embodiment and indeterminacy) and popular appeals to science (rooted in representation and objectification). Ultimately, I argue that in lieu of recognition from established medicine, a distinguishing role for sound healing rests on resolving this dialectical tension. This it accomplishes through the formulation of a new vernacular— hinging on terms such as “vibration,” “frequency,” and “resonance”—and a privileging of the body’s immaterial and energetic dimensions (a process I term the “naturalization of energy”). I suggest that one outcome of this dialectic is the new “body-as-vibration,” a conceptual model of the body that is believed to be amenable to science but that still preserves sound healers’ need to formulate a new epistemology for the body and health.
A fast parallel algorithm for solving block-tridiagonal systems of linear equations including the domain decomposition method
Creators: name: Terekhov, Andrew V.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics

description: In this study, we develop a new parallel algorithm for solving systems of linear algebraic equations with the same block-tridiagonal matrix but with different right-hand sides. The method is a generalization of the parallel dichotomy algorithm for solving systems of linear equations with tridiagonal matrices \cite{terekhov:Dichotomy}. Using this approach, we propose a parallel realization of the domain decomposition method (\mbox{the Schur} complement method). The calculation of acoustic wave fields using the spectral-difference technique improves the efficiency of the parallel algorithms. A near-linear dependence of the speedup with the number of processors is attained using both several and several thousands of processors. This study is innovative because the parallel algorithm developed for solving block-tridiagonal systems of equations is an effective and simple set of procedures for solving engineering tasks on a supercomputer.
description: The title and the abstract of the paper have been updated. The final version of the paper is published at The Parallel Computing
Neural-Based Large-Signal Device Models Learning First-Order Derivative Parameters for Intermodulation Distortion Prediction
Creators: name: Giannini, F.
name: Leuzzi, G.
name: Orengo, G.
name: Colantonio, P.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2002
Subjects: ING-INF/01 Elettronica

description: A detailed procedure to learn a nonlinear model together with its first-order derivative data is presented. Two correlated multilayer perceptron (MLP) neural networks providing the model and its first-order derivatives, respectively, are trained simultaneously. Applying this method to FET devices leads to nonlinear models for current and charge fitting derivative parameters. The training data is the bias-dependent equivalent circuit parameters extracted from S-parameter measurements. The resulting models are suitable for both small-signal and large-signal analyses, in particular for intermodulation distortion prediction. Examples for power amplifier simulations of power transfer, efficiency and intermodulation distortion performances are presented.
A single relaxation-time non-quasi-static model for monolithic MESFET devices
Creators: name: Martín-Guerrero, T.M.
name: Esteban-Marzo, J.
name: Castillo-Vázquez, B.
name: Camacho-Peñalosa, C.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2002
Subjects: ING-INF/01 Elettronica

description: In this contribution a MESFET equivalent circuit that takes into account the device’s non-quasi-static (NQS) effects is presented. The model topology is deduced directly from the small-signal measurement analysis and consists of a small-signal equivalent circuit that can be obtained from the linearization of a non-linear NQS model with non-linear state-functions (terminal charges and currents) that include a single relaxation-time. Results confirm that just one relaxation-time for all components is needed. The proposed model provides small-signal simulation performance similar to conventional models, but incorporating NQS effects in a consistent way and using just a reduced number of non-linear functions.
Approximating rough stochastic PDEs
Creators: name: Hairer, Martin
name: Maas, Jan
name: Weber, Hendrik
Publisher: name: arXiv
Year: 2012
Subjects: subject: Probability (math.PR)
subject: Analysis of PDEs (math.AP)
subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 60H15, 65M12

description: We study approximations to a class of vector-valued equations of Burgers type driven by a multiplicative space-time white noise. A solution theory for this class of equations has been developed recently in [Hairer, Weber, Probab. Theory Related Fields, to appear]. The key idea was to use the theory of controlled rough paths to give definitions of weak / mild solutions and to set up a Picard iteration argument. In this article the limiting behaviour of a rather large class of (spatial) approximations to these equations is studied. These approximations are shown to converge and convergence rates are given, but the limit may depend on the particular choice of approximation. This effect is a spatial analogue to the Itô-Stratonovich correction in the theory of stochastic ordinary differential equations, where it is well known that different approximation schemes may converge to different solutions.
description: 80 pages; Corrects a mistake in the proof of Lemma 3.6
Karl Völker - Leben und Werk
Creators: name: Meinel, Sabine
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2008
Subjects: subject: Völker
subject: Kunst
subject: Architektur
subject: Geschichte 1889-1962
subject: Hochschulschrift
subject: Online-Publikation
subject: 709.2

description: Mit der Dissertation wird die erste komplexe Darstellung zu Leben und Werk des halleschen Künstlers und Architekten Karl Völker (1889-1962) vorgelegt. Das Oeuvre umfasst nicht nur Bilder, Zeichnungen und Grafiken, sondern auch Raumausmalungen in Profanbauten und Kirchen, restauratorische Arbeiten, Farbfassungen an Gebäuden, Entwürfe für Glasmalereien und zahlreiche Werke der Architektur. Im Kaiserreich geboren, erlebte Karl Völker zwei Weltkriege, die Novemberrevolution, die Weimarer Republik, die Zeit des Nationalsozialismus, die Sowjetische Besatzungszone und die Deutsche Demokratische Republik und damit wiederholt dramatische gesellschaftliche Umbrüche. Zwischen den frühen expressionistischen Werken und dem Spätwerk der farbigen Kreidegrundzeichnungen steht ein stilistisch und thematisch spannungs- und abwechslungsreiches Oeuvre. Stilistisch weisen Begriffe wie Stilkunst, Expressionismus, Konstruktivismus und Neue Sachlichkeit auf die Vielschichtigkeit und die Einflüsse hin. Da Völker von der Malerei und Grafik allein nicht leben konnte, blieb der Künstler auf andere Arbeiten angewiesen. Er unterhielt mit dem Bruder Kurt eine gemeinsame Werkstatt für Kunst und Kunstgewerbe. Zahlreiche Farbgestaltungen profaner und kirchlicher Räume gehen auf diese Arbeitsgemeinschaft zurück. Daneben schuf er Wandbilder für unterschiedliche Auftraggeber. Für Bruno Taut, Otto Haesler und Wilhelm Jost übernahm Völker Aufträge für Farbfassungen von Gebäuden in Magdeburg, Celle und Halle. Von 1928 bis 1932 arbeitete er in Celle im Büro des Architekten Otto Haesler, vorrangig auf dem Gebiet des Siedlungsbaus. In der Zeit des Nationalsozialismus war Völker vorrangig mit Ausmalungen und der Restaurierung in Kirchen in der Provinz tätig. In der 1937 erschienenen Schmähschrift Wolfgang Willrichs "Säuberung des Kunsttempels" wurde er namentlich erwähnt und eine seiner Arbeiten abgebildet. Eines seiner "Industriebilder" war auf der Ausstellung "Entartete Kunst" zu sehen. Nach dem II. Weltkrieg traf ihn schon 1949 der Formalismusvorwurf. In den Folgejahren sicherten wiederum Arbeiten in Kirchen seinen Lebensunterhalt.
Additional file 1 of Starvation stress attenuates the miRNA-target interaction in suppressing breast cancer cell proliferation
Creators: name: Lü, Jinhui
name: Zhang, Chuyi
name: Han, Junyi
name: Xu, Zhen
name: Li, Yuan
name: Zhen, Lixiao
name: Zhao, Qian
name: Guo, Yuefan
name: Wang, Zhaohui
name: Bischof, Evelyne
name: Yu, Zuoren
Publisher: name: figshare
Year: 2020
Subjects: subject: Biophysics
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Marine Biology
subject: Cancer
subject: Mental Health
subject: Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1 Figure S1: MTT assays showing uninfluenced cell proliferation in MDA-MB-231 cells by knockdown of miR-221 and/or miR-222 under starvation condition. Figure S2: Quantitative real-time PCR analysis showing increase of p27 expression at mRNA level by anti-miR-221 and/or anti-miR-222 under regular cell culture condition, but not under starvation culture condition. Data are derived from three independent analyses, and presented as mean ± SEM (n = 3). **p < 0.01. Figure S3: Quantitative real-time PCR analysis showing suppressed expression of p27 at the mRNA levels in MDA-MB-231 cells by miR-221 and/or miR-222 overexpression under regular cell culture condition, but not under starvation condition. Data are derived from three independent analyses, and presented as mean ± SEM (n = 3). **p < 0.01. Figure S4: Quantitative real-time PCR analysis of the key factors regulating miRNA biogenesis and function, including Exportin 5, Dicer 1, Ago2 and Drosha in MDA-MB-231 cells under regular and starvation culture conditions. Data are derived from three independent analyses, and presented as mean ± SEM (n = 3). **p < 0.01. Figure S5: Western blot analysis demonstrating the overexpression of Ago2 in MDA-MB-231 cells transfected with pcDNA 3.1-Ago2 plasmid. Empty vector was used as negative control. β-actin served as loading control. Figure S6: Original gels for all western blots in Figures.
“The megaphone of destiny—” composition, voice, and multitude in the auditory avant-garde of the Twentieth Century : Gertrude Stein, Samuel Beckett, John Cage, and Frank Zappa
Creators: name: Michalak, Tomasz Zbigniew
Publisher: name: University of British Columbia
Year: 2014

description: This thesis traces the critical history of the term ‘auditory turn.’ Following Marshall McLuhan, I argue that the emergence of sound and sound-oriented concepts in Twentieth-Century literature and culture exemplifies a paradigm shift in the way a literary text operates. This shift affects not just literature but forms of literacy and literary analysis. By drawing on McLuhan’s notions like ‘the scandal of cubism’ and the ‘acoustic space’ as well as Walter Ong’s ‘secondary orality’ along with subsequent research in media and sound studies, I examine a group of selected works that manifest the idea of auditory text, a text characterized by performative sonority, aspiring to the condition of music. The thesis offers four ‘representative anecdotes’ of the ‘auditory turn’ in avant-garde and experimental literature, Gertrude Stein, Samuel Beckett, John Cage, and Frank Zappa, each of which is engaged in a separate chapter. Chapter 1 draws on the relationship between sound and presence and landscape as it applies to Stein’s ideas concerning composition and landscape theatre. Chapter 2 turns to selected short prose works of Beckett to demonstrate the attention to sound in the way in which the problem of voice as a marker of self preoccupies Beckett. Chapter 3 examines selected writings of John Cage that engage the problem of sound and voice both theoretically, as themes addressed critically, and in his practice of using voice as an instrument. Chapter 4 directs critical attention to Frank Zappa’s writings as well as musical compositions that explicitly engage the issue of sound, voice, and noise in popular culture. The four chapters help develop systematically the structural argument of the thesis concerning the interface of sound, text, and image, demonstrating this interface to manifest in three related ways, as composition, voice, and multitude (also referred to as peopling).
Growth of uniform infinite causal triangulations
Creators: name: Sisko, V.
name: Yambartsev, A.
name: Zohren, S.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We introduce a growth process which samples sections of uniform infinite causal triangulations by elementary moves in which a single triangle is added. A relation to a random walk on the integer half line is shown. This relation is used to estimate the geodesic distance of a given triangle to the rooted boundary in terms of the time of the growth process and to determine from this the fractal dimension. Furthermore, convergence of the boundary process to a diffusion process is shown leading to an interesting duality relation between the growth process and a corresponding branching process.
description: 27 pages, 6 figures, small changes, as published
Evolution of intraspecific social parasitism in honeybee workers (Apis mellifera capensis Esch)
Creators: name: Härtel, Stephan
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2006
Subjects: subject: Elektronische Publikation
subject: Hochschulschrift
subject: Online-Publikation
subject: Zsfassung in dt. Sprache
subject: 595.79915

description: Das Ziel meiner Arbeit war die Analyse eines durch legende Arbeiterinnen der Kaphonigbiene Apis mellifera capensis verursachten Sozialparasitismus. Bislang war intraspezifischer Sozialparasitismus durch legende Arbeiterinnen entweder wenig beachtet oder, wie im Falle von A. m. capensis, als ein durch Imkerei hervorgerufenes Artefakt betrachtet worden. Im Gegensatz hierzu konnte ich im ersten Teil meiner Arbeit zeigen, dass dieser Sozialparasitismus tatsächlich nicht nur ein durch menschliche Einflüsse hervorgerufenes Phänomen ist, sondern einen natürlichen Teil des Verhaltensrepertoires der Honigbiene darstellt. Im zweiten Teil der Arbeit habe ich unter Zuhilfenahme von genetischen und gaschromatographischen Techniken die komplexen proximaten Mechanismen untersucht, mit denen A. m. capensis Arbeiterinnen den sozialparasitischen Status innerhalb der A. m. scutellata Wirtskolonie etablieren. Hierdurch ergänzt meine Arbeit die eher deskriptiven Veröffentlichungen zum intraspezifischen Sozialparasitismus bei Hummeln und Zwerghonigbienen- Arbeiterinnen substantiell. Weiterhin können die Ergebnisse dieser Arbeit helfen, den Sozialparasitismus von legenden A. m. capensis Arbeiterinnen, der in Südafrika zu erheblichen Völkerverlusten führt, besser zu verstehen und zu behandeln.
description: The goal of my thesis was to analyse the social parasitism carried out by laying Cape honeybee, Apis mellifera capensis, workers. Intraspecific social parasitism by laying workers was widely unattended or in the case of the honeybee disposed as an artefact of beekeeping. In contrast to that, I have shown in the first part of my thesis that socially parasitic behaviour of workers is not only a man made phenomenon but is indeed an inherent part of the biology of the Western honeybee. In the second part of my thesis, I have analysed in detail the proximate mechanisms by which A. m. capensis workers establish themselves as social parasites within A. m. scutellata colonies. This thesis, thus, replenishes substantially the more descriptive papers about intraspecific social parasitism by laying workers in bumblebees and dwarf honeybees. Furthermore, the results may help to understand and manage the socially parasitic A. m. capensis workers which are a severe pest for apiculture in Northern South Africa.
Effects of GST null genotypes on individual susceptibility to atherosclerotic cardiovascular diseases: a meta-analysis
Creators: name: Li, Ying
name: Li, Li
name: Fan, Duojiao
name: Wang, Zheng
name: Cui, Yijie
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Neuroscience
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Mathematical Sciences not elsewhere classified

description: Some genetic association studies tried to investigate potential associations between glutathione S-transferase (GST) null genotypes and atherosclerotic cardiovascular diseases (ASCVD). However, the results of these studies were not consistent. Thus, we performed the present meta-analysis to explore associations between GST null genotypes and ASCVD in a larger pooled population. Systematic literature research was performed in PubMed, Web of Science, and Embase to identify eligible studies. We calculated odds ratios (ORs) and 95% confidence intervals (CIs) to estimate the strength of associations. Totally 47 studies were included for analyses. Pooled analyses suggested that GSTM1 (p = .007, OR = 1.29, 95%CI 1.07–1.56) and GSTP1 (p = .01, OR = 1.28, 95%CI 1.06–1.55) null genotypes were significantly associated with individual susceptibility to ASCVD in overall population. Further subgroup analyses revealed similar positive results for GSTM1 null genotype in South Asians and patients with coronary artery disease (CAD). No other significant results were observed for GST null genotypes in overall and subgroup analyses. In conclusion, our meta-analysis suggested that GSTM1 and GSTP1 null genotypes could impact individual susceptibility to ASCVD. These results suggested that these variations could be used to identify individuals at higher susceptibility to ASCVD.
การพัฒนากระบวนการเปลี่ยนผ่านไปสู่การพัฒนาที่ยั่งยืนของชุมชนกะเหรี่ยงในพื้นที่สูง
Creators: name: อภิสิทธิ์ พึ่งพร
Publisher: name: ศูนย์นวัตกรรมทางการศึกษา สื่อสิ่งพิมพ์ และสื่อออนไลน์
Year: 2564
Subjects: การพัฒนาที่ยั่งยืน
ชุมชนกะเหรี่ยงบนพื้นที่สูง

description: วารสารครุศาสตร์, 49, 1, EDUCU4901010 (18 หน้า)
Modelling of thermal dispersive effects in electron devices based on an equivalent voltage approach
Creators: name: Santarelli, A.
name: Zucchelli, G.
name: Bellavista, A.
name: Paganelli, R.
name: Vannini, G.
name: Filicori, F.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2002
Subjects: ING-INF/01 Elettronica

description: A model for thermal dispersive effects due to self-heating in electron devices at different “case” temperatures is here presented. The model is based on an equivalent voltage approach, which has already been used for taking into account dispersive effects due to charge trapping phenomena in FETs. According to this approach a virtual non-dispersive associated device controlled by equivalent port voltages is defined, in such a way to be compatible with modelling based on standard non-linear dynamic approaches. The equivalent-voltage description of dispersive  effects can be identified on the basis of conventional measurements carried out under static and low-frequency small-signal operating conditions and takes into account both charge trapping effects in FETs and self-heating in a comprehensive way. A preliminary experimental validation of the proposed approach is presented.
Auswirkungen des Wandels der Gesundheitspolitik in Deutschland in den letzten 5 Jahren auf die Stellung des Hausarztes
Creators: name: Nehler, Klaus-Dieter
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2008
Subjects: subject: Elektronische Publikation
subject: Hochschulschrift
subject: Online-Publikation
subject: Zsfassung in engl. Sprache
subject: 610.6

description: Die vorliegende Arbeit untersucht aus dem Blickwinkel der Hausärzte und Patienten die Veränderungen der Arzt-Patientenbeziehung in Deutschland in den letzten Jahren. Dazu wurden insgesamt 200 Hausärzte und 500 Patienten interviewt. Es sind deutliche Veränderungen in der Rolle des Hausarztes sichtbar, der zunehmend als Lebensberater fungiert und sich im psychologischen Spagat zwischen Ökonomie und persönlichen und gesellschaftlichen Ansprüchen an seine Tätigkeit befindet. Zunehmend kritische und stärker informierte Patienten erfordern mehr Zuwendung und Aufklärung für die aber nicht genügend zeitliche Ressourcen zur Verfügung stehen. Die Patienten verspüren den zunehmenden Druck, der auf den Hausärzten lastet und haben selbst nur geringe Kenntnisse zu den ökonomischen Rahmenbedingungen einer Hausarztpraxis. Diese Veränderungen sind das Ergebnis der Gesundheitspolitik der letzten Jahre, die auch häufig nicht als sachlich korrekte Information den Patienten erreicht. Hintergrund dieser Entwicklung ist der von der Politik gewollte Sparkurs, der die defizitäre Situation der gesetzlichen Krankenkassen verbessern soll. Diese Tendenzen und eine hinzukommende ungünstige Altersstruktur (Durchschnittsalter der Hausärzte 52,4 Jahre) können in absehbarer Zeit die Hausarztmedizin deutlich gefährden.
description: The purpose of this dissertation is the evaluation of changes in the physician-patientrelationship in Germany in the last years from the perspective of the general practitioner. Therefore a total of 200 general practitioners and 500 patients were interviewed. Distinct changes in the scope of duties of the general practitioner have become evident, for example the increasingly demanding task of "life-counselling" for the patients. Patients nowadays, who are more informed about diagnostic and therapeutic options and strategies, have a higher demand for information and higher expectations with regards to medical attendance. However, the general practitioners time for each individual patient is usually very limited. Hence, to meet personal, societal and economical demands on the practioners role becomes a balancing act for an increasing number of colleagues. Patients perceive the economic preassure on the practitioners offices but have only very limited knowledge about the general economic framework of the health-care system. The above mentioned changes are a result of the health-care policy of the last decade and especially a result of the extensive economies to ease financial deficits of the compulsory health insurance. These tendencies in combination with the age distribution of the general practitioners (mean 52,4 years) could compromise ambulatory health-care structures in a foreseeable future.
รูปแบบการจัดการห้องสมุดดิจิทัลที่มีประสิทธิผลสำหรับโรงเรียนมัธยมศึกษาขนาดใหญ่พิเศษ
Creators: name: อุไรวรรณ เสียงล้ำ
Publisher: name: ศูนย์นวัตกรรมทางการศึกษา สื่อสิ่งพิมพ์ และสื่อออนไลน์
Year: 2564
Subjects: รูปแบบการจัดการห้องสมุดดิจิทัล
โรงเรียนมัธยมศึกษาขนาดใหญ่พิเศษ

description: วารสารครุศาสตร์, 49, 1, EDUCU4901011 (10 หน้า)
Convivencia: la percepción de educadores sobre las actitudes de los alumnos en el espacio educativo
Creators: name: Dias, C.M.C
Publisher: name: Zenodo
Year: 2012
Subjects: convivencia
violencia
actitudes
espacio educativo

description: El presente estudio pretende comprender la percepción que los educadores poseen de la convivencia a partir de las actitudes reflejadas por los alumnos en el espacio educativo.
Classroom Attendance Monitoring System Using RFID
Creators: name: Yash S. Dindokar, Yash V. Sonone, Omprakash S. Hiwarkhade, Arpit M. Tiwari
Publisher: name: Zenodo
Year: 2025

description: The RFID and Fingerprint-Based Student Attendance Management System is an advanced solutiondesigned to enhance accuracy, efficiency, and security in tracking student attendance in educationalinstitutions. Conventional attendance processes, like roll calls or paper registers, are time-consuming andvulnerable to tampering or inaccuracies. This system combines Radio Frequency Identification (RFID)technology and biometric fingerprinting to record attendance automatically, with reliability andgenuineness. An RFID card with a distinct ID is issued to each student, which is read at the attendanceterminal upon arrival. At the same time, the student's identity is checked using a fingerprint scanner toavoid proxy attendance. The ESP8266 powers the system, connects it to a cloud-based or local databasefor monitoring in real-time. Attendance records are accessible by teachers and administrators using a webor mobile interface, enhancing record-keeping and transparency. Through automating attendancemanagement, the system minimizes administrative workload, eradicates fraudulent attendance habits, andmaximizes overall institutional efficiency. Furthermore, it allows for real-time monitoring and producesdetailed reports for more effective student performance tracking. The integration of RFID and fingerprinttechnology makes this system a secure, precise, and easy-to-use solution for today's educational setting.
Considerations in the Design of Electro-Optic Modulators and Drivers for 40 Gb/s and Beyond
Creators: name: Nightingale, S.J.
name: Philippakis, M.
name: Lovis, M.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2002
Subjects: ING-INF/01 Elettronica

description: This paper describes the physical and electrical models which were developed for a driver amplifier realised on gallium arsenide and an electro-optic modulator on lithium niobate. The performance of a combined 40 Gb/s driver modulator design was investigated bearing in mind the additional degrees of freedom allowed in the design of integrated components.
RDA-SHARC fairness assessment tools for crediting/rewarding scientists data sharing activities.
Creators: name: Romain, David
name: Laurence, Mabile
name: Anne, Cambon-Thomsen
Publisher: name: Zenodo
Year: 2019

description: What for? to foster data sharing by improving recognition of the work required How? by providing a set of recommendations to guide researchers and other relevant stakeholders (research institutions administrators, funders, policy makers and publishers/editors) in moving through the necessary steps towards crediting and rewarding in the data/resources-sharing process (in progress); and to encourage the adoption of data sharing activities-related criteria in the research evaluation process at the institutional, national and European/international levels. As part of it, 3 human readable assessment tools are under development that will assess semi-quantitatively the fairness knowledge & practices of scientists: 1.1 extensive FAIRness external assessment grid 52 criteria so far 1.2 simplified FAIRness external assessment grid (can be used as a quick self-assessment grid) 18 essential criteria https://zenodo.org/record/2551500#.XGK4llxKg2w 2.2 extensive checklist for fairness self-assessment (adapted from the 2 previous grids)
G2-structure deformations and warped products
Creators: name: Grigorian, Sergey
Publisher: name: arXiv
Year: 2011
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C10, 53C29

description: We overview the properties of non-infinitesimal deformations of G2-structures on seven-manifolds, and in particular, focus on deformations that lie in the seven-dimensional representation of G2 and are thus defined by a vector. We then consider deformations from G2-structures with the torsion class having one-dimensional and seven-dimensional components (so-called conformally nearly parallel G2-manifolds) to G2-structures with just a one-dimensional torsion component (nearly parallel G2-manifolds). We find that deformations between such structures exist if and only if the metric is a particular warped product metric.
description: 13 pages, v2 - corrected typos, clarified proof of Thm 4.4, updated references
Top++: a program for the calculation of the top-pair cross-section at hadron colliders
Creators: name: Czakon, Michal
name: Mitov, Alexander
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present the program Top++ for the numerical evaluation of the total inclusive cross-section for producing top quark pairs at hadron colliders. The program calculates the cross-section in a) fixed order approach with exact next-to-next-to leading order (NNLO) accuracy and b) by including soft-gluon resummation for the hadronic cross-section in Mellin space with full next-to-next-to-leading logarithmic (NNLL) accuracy. The program offers the user significant flexibility through the large number (29) of available options. Top++ is written in C++. It has a very simple to use interface that is intuitive and directly reflects the physics. The running of the program requires no programing experience from the user.
description: v2.0: Major update: includes full NNLO result; functionality updates. Program webpage: http://www.alexandermitov.com/software
Additional file 1 of BORA regulates cell proliferation and migration in bladder cancer
Creators: name: Cheng, Songtao
name: Peng, Tianchen
name: Zhu, Xiaolu
name: Zhou, Fenfang
name: Wang, Gang
name: Ju, Lingao
name: Xiao, Yu
name: Liu, Xuefeng
name: Wang, Xinghuan
Publisher: name: figshare
Year: 2020
Subjects: Medicine
Cell Biology
Pharmacology
Environmental Sciences not elsewhere classified
Biological Sciences not elsewhere classified
Developmental Biology
Cancer

description: Additional file 1: Figure S1. Validation of BORA knockdown and overexpression. Knockdown efficiency of BORA-siRNA in (A) UM-UC-3 and (B) 5637 cells. (C) WB confirmed the knockdown of BORA. (D) BORA overexpression was verified by qPCR and (E) WB assay. (F) Apoptosis analysis of BORA knockdown. ** p < 0.01, *** p < 0.001, n.s. means no significance. Table S1. List of primary antibodies. Table S2. List of secondary antibodies.
Big Bang nucleosynthesis with a non-Maxwellian distribution
Creators: name: Bertulani, C. A.
name: Fuqua, J.
name: Hussein, M. S.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Theory (nucl-th)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The abundances of light elements based on the big bang nucleosynthesis model are calculated using the Tsallis non-extensive statistics. The impact of the variation of the non-extensive parameter $q$ from the unity value is compared to observations and to the abundance yields from the standard big bang model. We find large differences between the reaction rates and the abundance of light elements calculated with the extensive and the non-extensive statistics. We found that the observations are consistent with a non-extensive parameter q = 1 + 0.05 - 0.12, indicating that a large deviation from the Boltzmann-Gibbs statistics (q = 1) is highly unlikely.
description: 12 pages, 13 figures, to be published in the Astrophysical Journal
Gaussian multiplicative chaos and KPZ duality
Creators: name: Barral, Julien
name: Jin, Xiong
name: Rhodes, Rémi
name: Vargas, Vincent
Publisher: name: arXiv
Year: 2012
Subjects: subject: Probability (math.PR)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: This paper is concerned with the construction of atomic Gaussian multiplicative chaos and the KPZ formula in Liouville quantum gravity. On the first hand, we construct purely atomic random measures corresponding to values of the parameter $γ^2$ beyond the transition phase (i.e. $γ^2>2d$) and check the duality relation with sub-critical Gaussian multiplicative chaos. On the other hand, we give a simplified proof of the classical KPZ formula as well as the dual KPZ formula for atomic Gaussian multiplicative chaos. In particular, this framework allows to construct singular Liouville measures and to understand the duality relation in Liouville quantum gravity.
description: Typo fixed in the title. To appear in Communications in Mathematical Physics
On the Quantum Geometry of Multi-critical CDT
Creators: name: Atkin, Max R.
name: Zohren, Stefan
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We discuss extensions of a recently introduced model of multi-critical CDT to higher multi-critical points. As in the case of pure CDT the continuum limit can be taken on the level of the action and the resulting continuum surface model is again described by a matrix model. The resolvent, a simple observable of the quantum geometry which is accessible from the matrix model is calculated for arbitrary multi-critical points. We go beyond the matrix model by determining the propagator using the peeling procedure which is used to extract the effective quantum Hamiltonian and the fractal dimension in agreement with earlier results by Ambjorn et al. With this at hand a string field theory formalism for multi-critical CDT is introduced and it is shown that the Dyson-Schwinger equations match the loop equations of the matrix model. We conclude by commenting on how to formally obtain the sum over topologies and a relation to stochastic quantisation.
description: 15 pages, 2 figures, improved discussion, some new results regarding Hausdorff dimension, as published
Wittgenstein y el silencio
Creators: name: Dib, Eduardo Daniel
Publisher: name: Zenodo
Year: 2019
Subjects: Philosophy of Language
Metaphysics
20th Century Philosophy

description: This work-in-progress aims to explain as accurately as possible the philosophical meaning given by Wittgenstein to the silence in both of his major books, the Tractatus Logico-Philosophicus, and the Philosophical Investigations. REMARKS ARE WELL RECEIVED
Optical Control of a Backside Illuminated Thin-Film Metamorphic HEMT
Creators: name: Vandersmissen, R.
name: Schreurs, D.
name: Vandenberghe, S.
name: Borghs, G.
Publisher: name: Alma Mater Studiorum - Università di Bologna
Year: 2002
Subjects: ING-INF/01 Elettronica

description: One of the aspects of the merging of microwave and optical technologies is the use of optical signals to switch electronic circuits in general and microwave circuits in particular. It is shown in this paper how a thin-film M(etamorpic) HEMT can be used as a photosensitive component. The advantage of this novel approach is the possibility of illuminating the backside of the thin (2-3 Pm) device. The contact metal (of gate, source and drain) is not hindering the light, penetrating into the semiconductor. The thin-film device has a much larger responsivity than a regular, frontside illuminated device. A test set-up, consisting of a 1550 nm laser and a large signal network analyser, enables us not only to do DC and S-parameter measurements, but also time-domain measurements with a modulated telecom laser source.
Twisted Traces of CM values of Harmonic Weak Maass Forms
Creators: name: Alfes, Claudia
name: Ehlen, Stephan
Publisher: name: arXiv
Year: 2011
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11F37

description: We show that the twisted traces of CM values of weak Maass forms of weight 0 are Fourier coefficients of vector valued weak Maass forms of weight 3/2. These results generalize work by Zagier on traces of singular moduli. We utilize a twisted version of the theta lift considered by Bruinier and Funke.
description: Some minor corrections, mostly typos. Added Journal reference