cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Morphological Diversities Among Star-forming Galaxies at High Redshifts in the Great Observatories Origins Deep Survey (GOODS)
Creators: name: Ravindranath, S.
name: Giavalisco, M.
name: Ferguson, H. C.
name: Conselice, C.
name: Katz, N.
name: Weinberg, M.
name: Lotz, J.
name: Dickinson, M.
name: Fall, S. M.
name: Mobasher, B.
name: Papovich, C.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have used the HST/ACS images to identify 4700 Lyman break galaxies (LBGs) in GOODS. We present the results from a parametric analysis of the 2-D surface brightness profiles, for 1333 LBGs at z > 2.5 with rest-frame UV(1600 Angstrom) AB magnitude < -20.5. Based on the Sersic index, n, which measures the profile shape, we find that about 40% of LBGs at z=3 have light profiles close to exponential, and only 30% have the high concentrations seen for spheroids. About 30% of LBGs appear to have multiple cores or disturbed morphologies suggestive of close pairs or on-going mergers. The fraction of spheroid-like (n > 2.5) LBGs decreases by about 15% from z = 5 to 3. A comparison of LBGs with the starburst galaxies at z = 1.2, shows that the fraction of spheroid-like profiles is about 20% higher among LBGs. The ellipticity distribution for LBGs exhibits a pronounced skew towards high ellipticities (> 0.5), which cannot be explained by morphologies similar to the local disks and spheroids viewed at random orientations. The peak of the distribution evolves toward lower ellipticities, from 0.7 at z = 4 to 0.5 at z = 3. At z = 1.2 the distribution is relatively flat as seen among the present-day galaxies. The dominance of elongated morphologies among LBGs suggests that in a significant fraction of them we may be witnessing star-formation in clumps along gas-rich filaments, or the earliest gas-rich bars that encompass essentially the entire visible galaxy. Similar features are found to be ubiquitous in hydrodynamical simulations in which galaxy formation at high redshifts occurs in filamentary inflows of dynamically cold gas within the dark matter halos, and involves gas- rich mergers.
description: Accepted for publication in the Astrophysical Journal (10 October, 2006 issue), 15 pages + 12 JPEG figures
Triple path to the exponential metric
Creators: name: Makukov, Maxim
name: Mychelkin, Eduard
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The exponential Papapetrou metric induced by scalar field conforms to observational data not worse than the vacuum Schwarzschild solution. Here, we analyze the origin of this metric as a peculiar space-time within a wide class of scalar and antiscalar solutions of the Einstein equations parameterized by scalar charge. Generalizing the three families of static solutions obtained by Fisher (1948), Janis, Newman & Winicour (1968), and Xanthopoulos & Zannias (1989), we prove that all three reduce to the same exponential metric provided that scalar charge is equal to central mass, thereby suggesting the universal character of such background scalar field.
description: Accepted in Foundations of Physics
Henry James and James McNeill Whistler : representing modernity
Creators: name: Maclean, Lisa Anne
Publisher: name: University of British Columbia
Year: 2009

description: This thesis is an examination of Henry James and James McNeill Whistler as cultural analysts of modernity. Using the theoretical work of Peter Burger, Jurgen Habermas and Theodor Adorno as a frame, I analyse James's and Whistler's theoretical and artistic responses to modernity and the problematic status of autonomous art and the modernist artist in late nineteenth century industrial capitalism. In so doing, I place both figures in their social and historical context and show how their work not only reflects but itself participates in the complex social and cultural transformations of late nineteenth century society. While Henry James has continued to attract critical attention from many quarters, those who have studied him in the larger context of nineteenth-century avant-garde culture are still relatively few. Of those contextual studies, none has examined James's career and work in the light of parallel developments in avant-garde visual art during this important and complex period. James McNeill Whistler, like Henry James an American expatriate working in late nineteenth century London, has been the subject of many studies describing his formal achievement; however, he has not yet attracted the attention of critics interested in theories of modernist representation, gender and sexuality. Because modernisation was a phenomenon which had an impact on all aspects of late nineteenth century culture, as both James and Whistler themselves acknowledge, my interdisciplinary, contextualist approach to cultural production can illuminate aspects of cultural theory and practice which might remain hidden in analyses contained within disciplinary boundaries. The present thesis is not primarily a work of art-historical scholarship nor is it an in-depth textual analysis of the Jamesian canon; it is an analysis of the ways in which two individuals deal with the conditions of their artistic practice. My thesis is original in its bringing together of two important figures - a writer and a visual artist - whose theory and practice reveals the complexity of early modern art's dialectical relationship with modernity. In so doing, I offer a critical reevaluation of the work of Henry James and James McNeill Whistler in light of its engagement with the discourses of modernity and modernism.
Rezension: "Cenzi Flendrovsky. Eine Bicycle Novel" von Petra Sturm
Creators: name: Krenn, Günter
Publisher: name: Medienimpulse
Year: 2023

description: Über Crescentia, genannt „Cenzi“ Flendrovsky ist wenig bekannt, außer dass sie 1872 in Wien geboren wurde und 1900 dort auch verstarb. Ein Nachruf und Fotos belegen, dass sie zu den ersten Radsportlerinnen Österreichs zählte und internationale Rennen bestritt. Die Wiener Journalistin Petra Sturm nahm ein Foto Cenzis zum Anlass, sich mit der Frau zu beschäftigen, ihre Geschichte nachzudichten und als „Bycicle Novel“ von Jorghi Poll nachzeichnen zu lassen. Anhand zeitgenössischer Quellen und auf historischem Bildmaterial aufbauender Illustrationen entsteht das Modellbild einer Frau, die früh ein Leben der Selbstbestimmtheit lebte.
description: Medienimpulse, Bd. 61 Nr. 3 (2023): Medialität in der Transition zwischen Elementarbereich und Primarstufe
On non Fundamental Group Equivalent Surfaces
Creators: name: Friedman, Michael
name: Teicher, Mina
Publisher: name: arXiv
Year: 2008
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14F35, 14H20,14H30, 14J28, 14Q05, 14Q10, 20F36, 57M12

description: In this paper we present an example of two polarized K3 surfaces which are not Fundamental Group Equivalent (their fundamental groups of the complement of the branch curves are not isomorphic; denoted by FGE) but the fundamental groups of their related Galois covers are isomorphic. For each surface, we consider a generic projection to CP^2 and a degenerations of the surface into a union of planes - the "pillow" degeneration for the non-prime surface and the "magician" degeneration for the prime surface. We compute the Braid Monodromy Factorization (BMF) of the branch curve of each projected surface, using the related degenerations. By these factorizations, we compute the above fundamental groups. It is known that the two surfaces are not in the same component of the Hilbert scheme of linearly embedded K3 surfaces. Here we prove that furthermore they are not FGE equivalent, and thus they are not of the same Braid Monodromy Type (BMT) (which implies that they are not a projective deformation of each other
Ecosystem Services of Rema-Kalenga Wildlife Sanctuary, Habiganj, Sylhet, Bangladesh
Creators: name: S. M. Mahmudur Rahman*
name: Sanjidah Khanam Atia
name: Faria Rahman
name: Mohammad Shah Nibraz
name: Tarek Shahriar
name: Moyury Tabassum Mowry
name: Md. Hafijul Islam Joy
name: Masuma Hossain Dina
name: Md. Saratul Islam Minhaz
name: A. B. M. Kamal Pasha
Publisher: name: Zenodo
Year: 2024
Subjects: Ecosystem services, Wildlife sanctuary, Flora, Fauna, Avifauna.

description: Abstract: Bangladesh, as a developing country, is widely focused on its immense development projects without considering the environment and ecosystem. The natural ecosystem provides services to living organisms and contributes to maintaining a balance in the environmental equilibrium. In Bangladesh, Rema Kalenga Wildlife Sanctuary (RKWS) is the largest reserve forest after the Sundarbans, inhabiting a huge number of species, both floral and faunal. This study identifies the products and services (ecosystem services) that the RKWS generates to the population. A total of 212 provisioning services (fruit, fish, vegetables, medicine, flowers, crafts), a huge variety of ecosystem functions as regulating services, 84 cultural services (recreation and relaxation, spiritual and ritual practices, social relations, economic opportunities, academics and research, and different local beliefs), 150 plant species (46% tree, 22.66% shrub, 25.33% herb and 5.33% climber), 37 animal species (7 endangered and 3 vulnerable), 27 fish species (3 vulnerable) and 43 bird species (1 vulnerable and 1 critically endangered) has been identified at RKWS. The study provides an understanding of the huge importance of natural environment and ecosystem. Decision-makers and the government should look at it to consider the environment as an integral component of sustainable development. Also, further research and policy are required to manage not only the forests but also all the open green spaces in a way that is socially equitable and environmentally comprehensive.
Rezension: "Aufsässige Leben, schöne Experimente. Von rebellischen schwarzen Mädchen, schwierigen Frauen und radikalen Queers" von Saidiya Hartman. Aus dem Amerikanischen übersetzt von Anna Jäger
Creators: name: Gassner, Sonja
Publisher: name: Medienimpulse
Year: 2023

description: „Hat die Sklaverei jemals wirklich geendet?“ ist, so konstatierte Judith Butler, die zentrale Frage, die Saidiya Hartman umtreibt. Auch in ihrem 2022 von Anna Jäger ins Deutsche übersetzte Aufsässige Leben, schöne Experimente. Von rebellischen schwarzen Mädchen, schwierigen Frauen und radikalen Queers ist diese Frage bestimmend. Hier rekonstruiert und imaginiert Hartman Biografien von Schwarzen Frauen und queeren Personen und erschließt ihnen so mithilfe von „Critical Fabulation“ einen widerständigen Möglichkeitsraum.
description: Medienimpulse, Bd. 61 Nr. 3 (2023): Medialität in der Transition zwischen Elementarbereich und Primarstufe
Monte-Carlo Simulator and Ancillary Response Generator of Suzaku XRT/XIS System for Spatially Extended Source Analysis
Creators: name: Ishisaki, Y.
name: Maeda, Y.
name: Fujimoto, R.
name: Ozaki, M.
name: Ebisawa, K.
name: Takahashi, T.
name: Ueda, Y.
name: Ogasaka, Y.
name: Ptak, A.
name: Mukai, K.
name: Hamaguchi, K.
name: Hirayama, M.
name: Kotani, T.
name: Kubo, H.
name: Shibata, R.
name: Ebara, M.
name: Furuzawa, A.
name: Iizuka, R.
name: Inoue, H.
name: Mori, H.
name: Okada, S.
name: Yokoyama, Y.
name: Matsumoto, H.
name: Nakajima, H.
name: Yamaguchi, H.
name: Anabuki, N.
name: Tawa, N.
name: Nagai, M.
name: Katsuda, S.
name: Hayashida, K.
name: Bamba, A.
name: Miller, E. D.
name: Sato, K.
name: Yamasaki, N. Y.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have developed a framework for the Monte-Carlo simulation of the X-Ray Telescopes (XRT) and the X-ray Imaging Spectrometers (XIS) onboard Suzaku, mainly for the scientific analysis of spatially and spectroscopically complex celestial sources. A photon-by-photon instrumental simulator is built on the ANL platform, which has been successfully used in ASCA data analysis. The simulator has a modular structure, in which the XRT simulation is based on a ray-tracing library, while the XIS simulation utilizes a spectral "Redistribution Matrix File" (RMF), generated separately by other tools. Instrumental characteristics and calibration results, e.g., XRT geometry, reflectivity, mutual alignments, thermal shield transmission, build-up of the contamination on the XIS optical blocking filters (OBF), are incorporated as completely as possible. Most of this information is available in the form of the FITS (Flexible Image Transport System) files in the standard calibration database (CALDB). This simulator can also be utilized to generate an "Ancillary Response File" (ARF), which describes the XRT response and the amount of OBF contamination. The ARF is dependent on the spatial distribution of the celestial target and the photon accumulation region on the detector, as well as observing conditions such as the observation date and satellite attitude. We describe principles of the simulator and the ARF generator, and demonstrate their performance in comparison with in-flight data.
description: 19 pages with 8 figures, accepted for publication in PASJ Vol 58, Suzaku special issue
3.5 kW coherently combined ultrafast fiber laser
Creators: name: Müller, Michael
name: Klenke, Arno
name: Steinkopff, Albrecht
name: Stark, Henning
name: Tünnermann, Andreas
name: Limpert, Jens
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: An ultrafast laser based on coherent beam combination of four ytterbium-doped step-index fiber amplifiers is presented. The system delivers an average power of 3.5 kW and a pulse duration of 430 fs at 80 MHz repetition rate. The beam quality is excellent (M2<1.24x1.10) and the relative intensity noise is as low as 1% in the frequency span from 1 Hz to 1 MHz. The system is turn-key operable as it features an automated spatial and temporal alignment of the interferometric amplification channels.
Projekt märchenhaft Digital
Creators: name: König, Michaela
name: Schmidinger, Iris
Publisher: name: Medienimpulse
Year: 2023

description: Das Projekt Märchenhaft digital des Österreichischen Buchklubs verortet sich passgenau im Spannungsfeld zwischen der Förderung von Medien- und Lesekompetenz: Die Schüler*nnen nehmen selbst gewählte Märchentexte als Podcast auf. Dabei können die jungen Leser*innen gemäß ihrer individuellen Lesegeschwindigkeit die Märchen mehrmals lesen, aufzeichnen und anhören, sie werden spielerisch ermutigt, Lesegeschwindigkeit und -deutlichkeit anzupassen, die Figuren mit verstellter Stimme zu lesen. Das Projekt bietet Pädagog*innen der Grund- und Sekundarstufe ein praxisnahes Konzept, konkrete Werkzeuge und ein Medienpaket, das die Umsetzung von Lesen und der Literaturvermittlung im digitalen Kontext unterstützt.
description: Medienimpulse, Bd. 61 Nr. 3 (2023): Medialität in der Transition zwischen Elementarbereich und Primarstufe
The dimension of a variety
Creators: name: Graczyńska, Ewa
name: Schweigert, Dietmar
Publisher: name: arXiv
Year: 2006
Subjects: subject: Logic (math.LO)
subject: Logic in Computer Science (cs.LO)
subject: General Mathematics (math.GM)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 08B99, 08A40

description: We invent the notion of a {\it dimension of a variety} $V$ as the cardinality of all its proper {\it derived} subvarieties (of the same type). The dimensions of varieties of lattices, varieties of regular bands and other general algebraic structures are determined.
description: The results of the paper were presented at the workshop AAA71 and CYA21 at B\c{e}dlewo, Poland on February 11, 2006. the paper is submitted to Discussiones Mathematicae Algebra and Stochastc Methods, special issue
Roth, Norbert: Das Bischofsamt der evangelischen Kirche
Creators: name: Ihsen, Florian
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 66 Nr. 3 (2017): Ökumenische Rundschau, Band 66, Heft 3
Ansätze kritisch-reflexiver Medienbildung in der Primarstufe
Creators: name: Laimböck, Günther
name: Roner, Christine
name: Stornig, Thomas
Publisher: name: Medienimpulse
Year: 2023

description: Medienbildung in der Grundschule soll kritisch-reflexives Medienbewusstsein fokussieren. Auf dieser Annahme aufbauend stellt der Beitrag zwei Ansätze für das Medienlernen auf der Primarstufe vor: historisches Lernen als Aspekt von Medienbildung und medienpraktische Arbeit als Annäherung an Medien- bzw. Journalismuskompetenz. Bereits Grundschulkinder sollen fundierte Kenntnisse und Fähigkeiten entwickeln, um Chancen und Risiken digitaler Medien kompetent wahrnehmen zu können. Daher gilt es eine reflektierte Auseinandersetzung mit Medieninhalten zu fördern. Arbeitsweisen der Historiker:innen und Journalist:innen kennenzulernen, trägt zum Verständnis bei, wie Mediensysteme funktionieren, medial vermittelte Botschaften entstehen und vermittelt Einsichten über deren Konstruktcharakter. Für Schulen gibt es vielfältige Möglichkeiten kritisch-reflexiven Medienkompetenzen zu fördern, ein Auftrag, der angesichts deren geringer Berücksichtigung in der Digitalen Grundbildung jedenfalls zu stärken ist.
description: Medienimpulse, Bd. 61 Nr. 3 (2023): Medialität in der Transition zwischen Elementarbereich und Primarstufe
High-average-power femtosecond laser at 258 nm
Creators: name: Müller, Michael
name: Klenke, Arno
name: Gottschall, Thomas
name: Klas, Robert
name: Rothhardt, Carolin
name: Demmler, Stefan
name: Rothhardt, Jan
name: Limpert, Jens
name: Tünnermann, Andreas
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We present an ultrafast fiber laser system delivering 4.6 W average power at 258 nm based on two-stage fourth-harmonic generation in beta barium borate (BBO). The beam quality is close to diffraction limited with an M2- value of 1.3 x 1.6. The pulse duration is 150 fs, which potentially is compressible down to 40 fs. A plain BBO and a Sapphire-BBO compound are compared with respect to the achievable beam quality in the conversion process. This laser is applicable in scientific and industrial fields. Further scaling to higher average power is discussed
Uniqueness of fixed point of a two-dimensional map obtained as a generalization of the renormalization group map associated to the self-avoiding paths on gaskets
Creators: name: Hattori, Tetsuya
Publisher: name: arXiv
Year: 2006
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 82B28; 60G99; 81T17; 82C41

description: Let $W(x,y) = a x^3 + b x^4 + f_5 x^5 + f_6 x^6 + (3 a x^2)^2 y + g_5 x^5 y + h_3 x^3 y^2 + h_4 x^4 y^2 + n_3 x^3 y^3 + a_{24} x^2 y^4 + a_{05} y^5 + a_{15} x y^5 + a_{06} y^6$, and $X=\frac{\partial W}{\partial x}$, $Y=\frac{\partial W}{\partial y}$, where the coefficients are non-negative constants, with $a>0$, such that $X^{2}(x,x^{2})-Y(x,x^{2})$ is a polynomial of $x$ with non-negative coefficients. Examples of the 2 dimensional map $Φ: (x,y)\mapsto (X(x,y),Y(x,y))$ satisfying the conditions are the renormalization group (RG) map (modulo change of variables) for the restricted self-avoiding paths on the 3 and 4 dimensional pre-gaskets. We prove that there exists a unique fixed point $(x_f,y_f)$ of $Φ$ in the invariant set $\{(x,y)\in R^2\mid x^2\ge y\}\setminus\{0\}$.
description: LaTeX2e, 12 pages, no figures
Chandra HETG Spectra of SN 1987A at 20 years
Creators: name: Dewey, D.
name: Zhekov, S. A.
name: McCray, R.
name: Canizares, C. R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have undertaken deep, high-resolution observations of SN 1987A at ~20 years after its explosion with the Chandra HETG and LETG spectrometers. Here we present the HETG X-ray spectra of SN 1987A having unprecedented spectral resolution and signal-to-noise in the 6 A to 20 A bandpass, which includes the H-like and He-like lines of Si, Mg, Ne, as well as O VIII lines and bright Fe XVII lines. In joint analysis with LETG data, we find that there has been a significant decrease from 2004 to 2007 in the average temperature of the highest temperature component of the shocked-plasma emission. Model fitting of the profiles of individual HETG lines yields bulk kinematic velocities of the higher-Z ions, Mg and Si, that are significantly lower than those inferred from the LETG 2004 observations.
description: 12 pages, 5 figures, 1 table; accepted for publication in ApJ Letters
Molecular photodissociation enabled by ultrafast plasmon decay
Creators: name: Torres-Sánchez, José
name: Feist, Johannes
Publisher: name: arXiv
Year: 2020
Subjects: subject: Quantum Physics (quant-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We propose a strategy for enabling photodissociation of a normally photostable molecule through coupling to a nanoparticle plasmon. The large possible coupling on the single-molecule level combined with the highly lossy nature of plasmonic modes, with lifetimes on the order of femtoseconds, opens an ultrafast decay channel for the molecule. For plasmon mode frequencies below the vertical photoexcitation energy of the molecule, the difference between excitation and emission energy is converted into vibrational energy on the molecular ground state in a Raman-like process. Under the correct conditions, this energy can be high enough to enable efficient photodissociation on the electronic ground state. We demonstrate the concept using numerical simulations of the Lindblad master equation for the hydrogen molecule in the vicinity of an aluminum nanoparticle, and explore the photodissociation efficiency as a function of various system parameters.
Kindergarten 4.0: Digitale Bildung im Professionalisierungsprozess von Elementarpädagog*innen
Creators: name: Gartner, Selina
name: Nikolatti, Ronja
name: Sorger, Claudia
name: Günther, Elisabeth
name: Bergmann, Nadja
Publisher: name: Medienimpulse
Year: 2023

description: Digitale Bildung im Elementarbereich bildet eine Grundvoraussetzung für chancengerechten Umgang mit Digitalität in der Primarstufe. Oftmals fehlt es jedoch an einer dahingehenden Sensibilisierung im Professionalisierungsprozess der Elementarpädagog*innen. Im vorliegenden Beitrag wird anhand des laufenden Forschungsprojektes ELEMeNT digitale Bildung im Elementarbereich aus Sicht angehender Elementarpädagog*innen diskutiert und mit dem Digital Gender Gap in Verbindung gebracht.
description: Medienimpulse, Bd. 61 Nr. 3 (2023): Medialität in der Transition zwischen Elementarbereich und Primarstufe
An Improved Description of the Dielectric Breakdown in Oxides Based on a Generalized Weibull distribution
Creators: name: Costa, U. M. S.
name: Freire, V. N.
name: Malacarne, L. C.
name: Mendes, R. S.
name: Picoli,, S.
name: de Vasconcelos, E. A.
name: Silva,, E. F. da
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In this work, we address modal parameter fluctuations in statistical distributions describing charge-to-breakdown $(Q_{BD})$ and/or time-to-breakdown $(t_{BD})$ during the dielectric breakdown regime of ultra-thin oxides, which are of high interest for the advancement of electronic technology. We reobtain a generalized Weibull distribution ($q$-Weibull), which properly describes $(t_{BD})$ data when oxide thickness fluctuations are present, in order to improve reliability assessment of ultra-thin oxides by time-to-breakdown $(t_{BD})$ extrapolation and area scaling. The incorporation of fluctuations allows a physical interpretation of the $q$-Weibull distribution in connection with the Tsallis statistics. In support to our results, we analyze $t_{BD}$ data of SiO$_2$-based MOS devices obtained experimentally and theoretically through a percolation model, demonstrating an advantageous description of the dielectric breakdown by the $q$-Weibull distribution.
description: 5 pages, 3 figures
title: Voice recognition system based on FPGA
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
title: Ð¡Ð¸ÑÑÐµÐ¼Ð° Ð³Ð¾Ð»Ð¾ÑÐ¾Ð²Ð¾Ð¹ Ð¸Ð´ÐµÐ½ÑÐ¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¸ Ð½Ð° Ð¾ÑÐ½Ð¾Ð²Ðµ ÐÐÐÐ¡
Creators: name: Ð¤Ð°Ð½ ÐÐ°Ð½ Ð§Ð¸ÐµÐ½
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2023
Subjects: ÐÐµÐ¹ÑÐ¾Ð½Ð½ÑÐµ ÑÐµÑÐ¸
Ð ÐµÑÑ
Ð³Ð¾Ð»Ð¾ÑÐ¾Ð²Ð°Ñ Ð¸Ð´ÐµÐ½ÑÐ¸ÑÐ¸ÐºÐ°ÑÐ¸Ñ
voice identification

description: ÐÐ°Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¿Ð¾ÑÐ²ÑÑÐµÐ½Ð° ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸Ð¸ ÑÐ°ÑÐ¿Ð¾Ð·Ð½Ð°Ð²Ð°Ð½Ð¸Ñ Ð³Ð¾Ð»Ð¾ÑÐ°, Ð°Ð½Ð°Ð»Ð¸Ð·Ñ ÑÐµÑÐ¸, Ð° ÑÐ°ÐºÐ¶Ðµ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð·Ð²ÑÐºÐ°, ÐºÐ¾ÑÐ¾ÑÑÐµ Ð¿ÑÐ¸Ð±Ð»Ð¸Ð·Ð¸Ð»Ð¸ÑÑ Ðº ÐºÐµÐ¿ÑÑÑÐ°Ð»ÑÐ½Ð¾Ð¼Ñ ÐºÐ¾ÑÑÑÐ¸ÑÐ¸ÐµÐ½ÑÑ Mel-Frequency (MFCC), Ð½ÐµÐ¹ÑÐ¾Ð½Ð½Ð¾Ð¹ ÑÐµÑÐ¸ Ð¸ Ð¿Ð¾Ð´ÑÐ²ÐµÑÐ´Ð¸Ð»Ð¸ Ð±Ð¾Ð»ÑÑÑÑ Ð¿ÑÐ¾Ð¸Ð·Ð²Ð¾Ð´Ð¸ÑÐµÐ»ÑÐ½Ð¾ÑÑÑ Ð¿Ð¾ ÑÑÐ°Ð²Ð½ÐµÐ½Ð¸Ñ Ñ Ð´ÑÑÐ³Ð¸Ð¼Ð¸ Ð¼ÐµÑÐ¾Ð´Ð°Ð¼Ð¸.
description: The given work is devoted Voice recognition technology, speech analysis as well as sound modeling have approached Mel-Frequency Cepstral Coefficient (MFCC), Neural network and verified great performance in comparison to other methods.
Apsidal motion in the massive binary HD 152248 -- Constraining the internal structure of the stars
Creators: name: Rosu, S.
name: Noels, A.
name: Dupret, M. -A.
name: Rauw, G.
name: Farnir, M.
name: Ekström, S.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Apsidal motion in massive eccentric binaries offers precious information about the internal structure of the stars. This is especially true for twin binaries consisting of two nearly identical stars. We make use of the tidally induced apsidal motion in the twin binary HD152248 to infer constraints on the internal structure of the O7.5 III-II stars composing this system. We build stellar evolution models with the code Clés assuming different prescriptions for the internal mixing occurring inside the stars. We identify the models that best reproduce the observationally determined present-day properties of the components of HD152248, as well as their $k_2$, and the apsidal motion rate of the system. We analyse the impact of some poorly constrained input parameters, including overshooting, turbulent diffusion, and metallicity. We further build 'single' and 'binary' GENEC models that account for stellar rotation to investigate the impacts of binarity and rotation. We discuss some effects that could bias our interpretation of the apsidal motion in terms of the internal structure constant. Reproducing the observed $k_2$ value and rate of apsidal motion simultaneously with the other stellar parameters requires a significant amount of internal mixing or enhanced mass-loss. The results suggest that a single-star evolution model is sufficient to describe the physics inside this binary system. Qualitatively, the high turbulent diffusion required to reproduce the observations could be partly attributed to stellar rotation. Higher-order terms in the apsidal motion are negligible. Only a very severe misalignment of the rotation axes could significantly impact the rate of apsidal motion, but such a high misalignment is highly unlikely in such a binary system. We infer an age estimate of $5.15\pm0.13$ Myr for the binary and initial masses of $32.8\pm0.6$ M$_\odot$ for both stars.
description: 16 pages, A&A accepted
Experimental and Theoretical Investigation of Intratumoral Nanoparticle Distribution to Enhance Magnetic Nanoparticle Hyperthermia
Creators: name: Attaluri, AnilChandra
Publisher: name: Maryland Shared Open Access Repository
Year: 2012
Subjects: Hyperthermia
Intratumoral nanoparticle distribution
Magnetic Nanoparticles
MicroCT
Tumor

description: Magnetic nanoparticles have gained prominence in recent years for use in clinical applications such as imaging, drug delivery, and hyperthermia.  Magnetic nanoparticle hyperthermia is a minimally invasive and effective approach for confined heating in tumors with little collateral damage. One of the major problems in the field of magnetic nanoparticle hyperthermia is irregular heat distribution in tumors which caused repeatable heat distribution quite impossible. This causes under dosage in tumor area and overheating in normal tissue.   In this study, we develop a unified approach to understand magnetic nanoparticle distribution and temperature elevations in gel and tumors. A microCT imaging system is first used to visualize and quantify nanoparticle distribution in both tumors and tissue equivalent phantom gels.  The microCT based nanoparticle concentration is related to specific absorption rate (SAR) of the nanoparticles and is confirmed by heat distribution experiments in tissue equivalent phantom gels. An optimal infusion protocol is identified to generate controllable and repeatable nanoparticle distribution in tumors.  In vivo animal experiments are performed to measure intratumoral temperature elevations in PC3 xenograft tumors implanted in mice during magnetic nanoparticle hyperthermia. The effect of nanofluid injection parameters on the resulted temperature distribution is studied. It shows that the tumor temperatures can be elevated above 50?C using very small amounts of ferrofluid with a relatively low magnetic field.  Slower ferrofluid infusion rates result in smaller nanoparticle distribution volumes in the tumors, however, it gives the much required controllability and repeatability when compared to the higher infusion rates.  More nanoparticles occupy a smaller volume in the vicinity of the injection site with slower infusion rates, causing higher temperature elevations in the tumors. Based on the microCT imaging analyses of nanoparticles in tumors, a mass transport model is developed to simulate nanoparticle convection and diffusion in tumors, heat-induced tumor structural changes, as well as nanoparticle re-distribution during nanoparticle hyperthermia procedures. The modeled thermal damage induced nanoparticle redistribution predicts a 20% increase in the radius of the spherical tissue region containing nanoparticles.  The developed model has demonstrated the feasibility of enhancing nanoparticle dispersion from injection sites using targeted thermal damage.
25 Jahre LOLA RENNT, 5 Jahre interaktive Lernbausteine für die Filmbildung: Rückblick, Erfahrungsbericht, Reflexion, Ausblick
Creators: name: Schneider, Olaf
name: Wittenbröker, Volker
Publisher: name: Medienimpulse
Year: 2023

description: Der Beitrag erläutert die besondere Rolle des Films LOLA RENNT (1998) von Tom Tykwer für die Deutschdidaktik und beschreibt die Entstehung des webbasierten Filmbildungsprojekts "LOLA RENNT: Interaktive Lernbausteine für die Filmbildung" und dessen Auswirkungen auf die deutsche Bildungslandschaft.
description: Medienimpulse, Bd. 61 Nr. 3 (2023): Medialität in der Transition zwischen Elementarbereich und Primarstufe
Experimental and Theoretical analysis of particles using dielectrophoretic techniques
Creators: name: Mulukutla, Vishwanath
Publisher: name: Maryland Shared Open Access Repository
Year: 2008
Subjects: Engineering, Mechanical(0548)

description: Experimental and Theoretical analysis of particles using dielectrophoretic techniques Author: Vishwanath Mulukutla, Master of Science, 2007 Thesis directed by: Dr. Dawn Bennett, Assistant Professor Department of UMBC Mechanical Engineering Department Collection, UMBC This thesis describes an experimental and theoretical study conducted on electric field induced particles such as polystyrene Latex beads in the separation, and Penicillium brevicompactum along with bacillus globigii bacteria in the concentration. The past decade has seen an increase in the use of micro-total analytical systems for analyzing chemical and biological substances. Compared to other available methods, dielectrophoresis is an effective method for manipulation of particles in micro- and nano-fluidic systems. Dielectrophoresis has proven to be successful in the separation, transportation, trapping and sorting of cells, DNA molecules, and viruses. Suspensions made up of biological analytes move into high field regions because of positive dielectrophoresis in microfluidic devices that are equipped with triangular, trapezoidal and U shaped electrodes, integrated into the top and bottom of the channel wall and perpendicular to the flow of the fluid suspension. CFDRC code was used to analyze the gradient of the electric field and simulate the particle motion. Experiments were conducted on particles such as the polystyrene latex beads as well as the biological particles such as Penicillium Brevicompactum (PBC), and Bacillus Globigii (BG) bacteria. It was found that the particles suspended in the microfluidic channels were influenced by the high-gradient AC-field causing the biological particles such as the PBC and BG into regions of high field strength, and the polystyrene latex beads into the low field strength regions. Simulations developed using the CFDRC code, and experimental results of latex beads showed the phenomenon of negative dielectrophoresis.
EVALUATION OF THE EFFECTIVENESS OF A COMMERCIAL COOLING COLLAR IN REDUCING BODY TEMPERATURE DURING HEAT STRESS: THEORETICAL MODELING OF BODY TEMPERATURE DISTRIBUTION
Creators: name: Eginton, Michael Louis
Publisher: name: Maryland Shared Open Access Repository
Year: 2008
Subjects: Engineering, Mechanical (0548)
Engineering, General (0537)

description: Heat stroke results in an elevation of body temperature and neurological abnormalities which may lead to multiple-organ damage, permanent neurological damage, and even death.  In order to effectively reduce the risk of permanent damage, one must rapidly decrease the body temperature.  One method which shows potential and lacks in-depth research is the use of a cooling collar.  To evaluate this method's effectiveness on cooling the body tissue, a three-dimensional vascular model of the neck and a two-dimensional continuum model of the body using the Pennes bioheat equation, were developed.  The vascular model evaluated thermal interaction between the neck tissue and the embedded common carotid artery, vertebral artery, internal and external jugular veins, and cervical spine.  The temperature decay along the major blood vessels varied between 0.1°C and 0.5°C when the cooling collar was 0°C at the neck skin surface.  Depending on the cooling collar temperature, up to 37 W of heat was removed from the arterial and venous blood in the neck region.  The calculated heat removal rate due to blood cooling in the neck and the temperature distribution at the interface between the neck and torso were then substituted into the Pennes bioheat equation (a continuum model) to assess the cooling rate of the body temperature.  The results indicate the cooling collar has the potential to decrease the average volumetric body temperature by as much as 0.69°C/hour.  The cooling collar's relatively small size and portable nature can provide critical and timely treatment before more complicated methods can be applied.
Mediale Konstitutionsbedingungen von >Gemeinschaft & Gesellschaft< nach Ferdinand Tönnies
Creators: name: Barberi, Alessandro
Publisher: name: Medienimpulse
Year: 2023

description: Dass der Gegensatz von Gemeinschaft und Gesellschaft angesichts aktueller Diskussionen nachdrücklich zur Aktualisierung drängt, ist der Ausgangspunkt dieses Beitrags, der im Sinne eines Close Readings den medienpädagogischen Versuch unternimmt, soziologische Bestimmungen von Kollektivsubjekten aus der Gründungszeit der (deutschen) Soziologie für die Gegenwart fruchtbar zu machen. Dabei bilden die rezenten Debatten zu Creative Commons, Gemeinwohl, Common Wealth und Kommunitarismus den allgemeinen Rahmen, in dem Tönnies’ Klassiker „Gemeinschaft und Gesellschaft. Abhandlung des Communismus und des Socialismus als empirischer Kulturformen“ (Tönnies 1887)  bzw. ab der zweiten Auflage mit dem szientifischeren Untertitel „Grundbegriffe der reinen Soziologie“ (Tönnies 2019) zur Grundlage für eine Analyse der medialen Konstitutionsbedingungen von Kollektivsubjekten erklärt wird.
description: Medienimpulse, Bd. 61 Nr. 3 (2023): Medialität in der Transition zwischen Elementarbereich und Primarstufe
The Stueckelberg Z Prime at the LHC: Discovery Potential, Signature Spaces and Model Discrimination
Creators: name: Feldman, Daniel
name: Liu, Zuowei
name: Nath, Pran
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: An analysis is given of the capability of the LHC to detect narrow resonances using high luminosities and techniques for discriminating among models are discussed. The analysis is carried out with focus on the $U(1)_X$ Abelian (Higgless) Stueckelberg extension of the Standard Model (StSM) gauge group which naturally leads to a very narrow $Z'$ resonance. Comparison is made to another class of models, i.e., models based on the warped geometry which also lead to a narrow resonance via a massive graviton ($G$). Methods of distinguishing the StSM $Z'$ from the massive graviton at the LHC are analyzed using the dilepton final state in the Drell-Yan process $pp\to Z'\to l^+l^-$ and $pp\to G \to l^+l^-$. It is shown that the signature spaces in the $σ\cdot Br(l^+l^-) $-resonance mass plane for the $Z$ prime and for the massive graviton are distinct. The angular distributions in the dilepton C-M system are also analyzed and it is shown that these distributions lie high above the background and are distinguishable from each other. A remarkable result that emerges from the analysis is the observation that the StSM model with $Z'$ widths even in the MeV and sub-MeV range for $Z'$ masses extending in the TeV region can produce detectable cross section signals in the dilepton channel in the Drell-Yan process with luminosities accessible at the LHC. While the result is derived within the specific StSM class of models, the capability of the LHC to probe models with narrow resonances in this range may hold more generally.
description: 44 page, 14 figures
Electrokinetic Techniques for Enhancing the Mixing Effect and Manipulating Biological Particles in Microfluidics
Creators: name: SONG, HONGJUN
Publisher: name: Maryland Shared Open Access Repository
Year: 2009
Subjects: dielectrophoresis
electrokinetic technique
microfluidics
mixing
particle manipulation
separation

description: The objective of this research is to study the enhancement of the mixing effect and the manipulation of suspended biological particles in microfluidic systems using electrokinetic techniques. The research can be divided as two main parts: the first part involves analyzing methods to enhance the mixing effect in microchannels via transverse electroosmotic flow, and the second part involves investigating the dielectrophoresis (DEP) technique to manipulate and separate bioparticles. In the first part, a DC electroosmotic micromixer with parallel or square wave electrodes on the bottom of the channel was designed. The results show that the mixing effect is rapidly enhanced with these electrode designs, and the required mixing length is reduced from several centimeters to millimeters. In addition, the mixing effect is further enhanced by placing electrodes on both top and bottom of the microfluidic device. Six different patterns of combined electrode designs were investigated in order for an optimal design to be achieved. A chaotic micromixer was also created via periodic switching the transverse electroosmotic flow (EOF) when a low frequency electric field was applied on a pair of electrodes placed at the bottom of the channel. The mixing performance was better than the DC electroosmotic mixer and a shorter mixing length was required. In the second part, analytical, numerical, and experimental techniques were investigated to study the dielectrophoretic force. The holding capability of the DEP gate system with a 3D electrode design was investigated. This provided useful information for designing the DEP gate and sorter system. The experimental behavior of bioparticles such as penicillium brevicompactum (PBC), T-cells, and Escherichia coli (E.coli) bacteria in a continuous-mode dielectrophoretic gate system to realize high efficiency separation of different bioparticles and cells was also investigated. Meanwhile, an analytical method to analyze the dielectrophoretic force with an n-phase AC electric field applied on an interdigitated parallel electrode array was presented. A semi-analytical approach to analyze the dielectrophoretic force for both planar electrode systems and a 3D electrode system was also demonstrated. Both of these analytical methods provide accurate calculation for the dielectrophoretic force, which is important for investigating the behavior of bioparticles with DEP.
ELASTIC IMAGE REGISTRATION BASED ON STRAIN ENERGY MINIMIZATION: APPLICATION TO PROSTATE MAGNETIC RESONANCE IMAGING
Creators: name: Zhang, Bao
Publisher: name: Maryland Shared Open Access Repository
Year: 2009
Subjects: Elastic registration
MRI
Prostate cancer

description: The use of magnetic resonance (MR) imaging in conjunction with an endorectal coil is currently the clinical standard for the diagnosis of prostate cancer. This approach has become recognized for its comparatively high sensitivity and specificity. However, imaging in this manner provides images and spectra of the prostate in the deformed state because of contact with the endorectal coil. Such deformation may lead to uncertainties in the localization of prostate cancer during therapy. In this dissertation we propose a novel 3-D elastic registration method. Unlike the traditional elastic registration methods which solve the force balance equations to achieve transformation between the source and target images, this algorithm derives the transformation by minimizing a physically motivated strain energy function. The minimization process is constrained by the matching features (i.e., contours or surfaces) in the source and target images that have been identified automatically by active contour/surface approaches. The Gauss-Seidel method was used in the numerical implementation of the strain energy minimization algorithm. The registration procedure was validated on synthetic digital images, on a physical prostate phantom and in vivo prostate MR images. The registration error on the synthetic digital images was 0.2  0.1 pixels. On the physical phantom and in vivo patient data, the errors were 1.0  0.6 pixels (0.6  0.4 mm), and 1.8  0.7 pixels (1.1  0.4 mm), respectively. Registration also improved image similarity (normalized cross correlation) from 0.72  0.10 to 0.96  0.03 on patient data. Registration results from the three forms of evaluation demonstrated that the proposed registration procedure can be used to significantly (p < 0.0001) improve the accuracy of image-guided therapies such as brachytherapy or external-beam therapy and can be valuable in the longitudinal follow-up of patients after therapy. When applied to in vivo prostate MR images the SEMT algorithm was significantly (p<0.001) better than the 12-parameter affine approach, and nearing significant improvement (p=0.066) when compared to the B-spline approach.
Low-frequency $K^π=0^{+}$ modes in deformed neutron-rich nuclei: Pairing- and $β$-vibrational modes of neutron
Creators: name: Yoshida, Kenichi
name: Yamagami, Masayuki
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: Low-frequency $K^π=0^{+}$ states in deformed neutron-rich nuclei are investigated by means of the quasiparticle-random-phase approximation based on the Hartree-Fock-Bogoliubov formalism in the coordinate space. We have obtained the very strongly collective $K^π=0^{+}$ modes not only in neutron-rich Mg isotope but also in Cr and Fe isotopes in N=40 region, where the onset of nuclear deformation has been discussed. It is found that the spatially extended structure of neutron quasiparticle wave functions around the Fermi level brings about a striking enhancement of the transition strengths. It is also found that the fluctuation of the pairing field plays an important role in generating coherence among two-quasiparticle excitations of neutron.
description: 9 pages, 7 figures, and 1 table
Freiheit, Gleichheit, Solidarität
Creators: name: Barberi, Alessandro
Publisher: name: Medienimpulse
Year: 2023

description: Der Beitrag von Alessandro Barberi untersucht das „steile normative Gefälle“ (Habermas) unserer liberalen Demokratien im Blick auf die normative Kraft der Ideale der Französischen Revolution. Denn Freiheit, Gleichheit und Solidarität sind angesichts von digitalen Kontrollmechanismen im Rahmen des Informationskapitalismus in Gefahr. Dies wird kursorisch an der Causa Snowden erläutert, die vor genau 10 Jahren die fatale Rolle von Überwachungstechnologien vor Augen führte. Dabei geht es nachdrücklich um eine ideologiekritische Perspektive, wenn vor Augen steht, dass Technologien gegenwärtig nicht durchgängig zu guten und humanen Zwecken eingesetzt werden.
description: Medienimpulse, Bd. 61 Nr. 3 (2023): Medialität in der Transition zwischen Elementarbereich und Primarstufe
RDMO Community-Treffen 8. Oktober 2024 - Bericht aus der Entwicklungsgruppe
Creators: name: Klar, Jochen
Publisher: name: Zenodo
Year: 2024

description: Bericht aus der Entwicklungsgruppe auf dem RDMO Community-Treffen am 8.10.2024. Neue Funktionen in RDMO 2.2, derzeitige Arbeiten und Plugins.
Optoelectronic Intelligence
Creators: name: Shainline, Jeffrey M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Emerging Technologies (cs.ET)
subject: Artificial Intelligence (cs.AI)
subject: Neural and Evolutionary Computing (cs.NE)
subject: Neurons and Cognition (q-bio.NC)
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences

description: To design and construct hardware for general intelligence, we must consider principles of both neuroscience and very-large-scale integration. For large neural systems capable of general intelligence, the attributes of photonics for communication and electronics for computation are complementary and interdependent. Using light for communication enables high fan-out as well as low-latency signaling across large systems with no traffic-dependent bottlenecks. For computation, the inherent nonlinearities, high speed, and low power consumption of Josephson circuits are conducive to complex neural functions. Operation at 4\,K enables the use of single-photon detectors and silicon light sources, two features that lead to efficiency and economical scalability. Here I sketch a concept for optoelectronic hardware, beginning with synaptic circuits, continuing through wafer-scale integration, and extending to systems interconnected with fiber-optic white matter, potentially at the scale of the human brain and beyond.
description: 10 pages, five figures, perspective article