cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
⚘ Minimum as a Sign in Contemporary Architecture ☀ Dragana Vasilski
Creators: name: Vasilski, Dragana
name: Nikitenko, Yulia
Publisher: name: Instituto de Estudos Filosóficos
Year: 2022
Subjects: subject: Architecture
subject: FOS: Civil engineering
subject: Minimalism
subject: Minimum
subject: Silence
subject: Semiotics
subject: Spirituality

description:  

Outgrow excess... and you will develop a semiotic sensitivity to what is strictly necessary.

This event, chaired by Yulia Nikitenko (Institute for Philosophical Studies), is part of the activities of the 2022 International Open Seminar on Semiotics: a Tribute to John Deely on the Fifth Anniversary of His Passing, cooperatively organized by the Institute for Philosophical Studies of the Faculty of Arts and Humanities of the University of Coimbra, the Lyceum Institute, the Deely Project, Saint Vincent College, the Iranian Society for Phenomenology at the Iranian Political Science Association, the International Association for Semiotics of Space and Time, the Institute for Scientific Information on Social Sciences of the Russian Academy of Sciences, the Semiotic Society of America, the American Maritain Association, the International Association for Semiotic Studies, the International Society for Biosemiotic Studies, the International Center for Semiotics and Intercultural Dialogue, Moscow State Academic University for the Humanities and the Mansarda Acesa with the support of the FCT - Foundation for Science and Technology, I.P., of the Ministry of Science, Technology and Higher Education of the Government of Portugal under the UID/FIL/00010/2020 project.

***

Dragana Vasilski is Full-time Professor and Dean of the Faculty of Architecture and Urban Planning of the University Union Nikola Tesla in Belgrade, Serbia. Her work includes writings and research, architectural design, and teaching the application of new methodologies and the pursuit of investigations within an interdisciplinary approach. Current fields of interest: interdisciplinary intersections between architecture and philosophy, architectural theory and history, arts and sciences, architectural design process, design studies, culture studies, humanistic and natural sciences. Her scientific competence and success are reflected in more than one hundred scientific papers. The peculiar field of her interest, within topics related to contemporary architecture, is Minimalism in architecture, as in architecture that changes people's lives. She uses semiotics as a research method to define, understand, and explain this contemporary aesthetic theme in architecture. Since 2018 she is a member of the Executive Board of the IASSp+T - International Association for Semiotics of Space and Time, where she holds the position of Secretary General. Original artistic achievements should also be mentioned.

***

Homepage: https://www.uc.pt/fluc/uidief/act/io2s
Auditorium: https://www.uc.pt/fluc/uidief/act/io2s/auditorium

***

Technical support assured by Robert Junqueira.
The cover image for the video was designed by Zahra Soltani.
Collective Correlations of Brodmann Areas fMRI Study with RMT-Denoising
Creators: name: Burda, Zdzislaw
name: Kornelsen, Jennifer
name: Nowak, Maciej A.
name: Porebski, Bartosz
name: Sboto-Frankenstein, Uta
name: Tomanek, Boguslaw
name: Tyburczyk, Jacek
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantitative Methods (q-bio.QM)
subject: FOS: Biological sciences

description: We study collective behavior of Brodmann regions of human cerebral cortex using functional Magnetic Resonance Imaging (fMRI) and Random Matrix Theory (RMT). The raw fMRI data is mapped onto the cortex regions corresponding to the Brodmann areas with the aid of the Talairach coordinates. Principal Component Analysis (PCA) of the Pearson correlation matrix for 41 different Brodmann regions is carried out to determine their collective activity in the idle state and in the active state stimulated by tapping. The collective brain activity is identified through the statistical analysis of the eigenvectors to the largest eigenvalues of the Pearson correlation matrix. The leading eigenvectors have a large participation ratio. This indicates that several Broadmann regions collectively give rise to the brain activity associated with these eigenvectors. We apply random matrix theory to interpret the underlying multivariate data.
Ein Vergleich verschiedener Verfahren zur Optimierung mehrlagiger Perzeptron-Netze für die Modellierung dynamischer Systeme mit chaotischem Verhalten
Creators: name: Ergezinger, Siegfried
Publisher: name: Hannover : Universität
Year: 1998
Subjects: subject: Chaotic time signals
subject: multilayer perceptrons
subject: nonlinear optimization algorithms
subject: Dewey Decimal Classification::000 | Allgemeines, Wissenschaft::000 | Informatik, Wissen, Systeme::004 | Informatik

description: [no abstract]
Concurrent learning-based approximate optimal regulation
Creators: name: Kamalapurkar, Rushikesh
name: Walters, Patrick
name: Dixon, Warren
Publisher: name: arXiv
Year: 2013
Subjects: subject: Systems and Control (eess.SY)
subject: Optimization and Control (math.OC)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Mathematics

description: In deterministic systems, reinforcement learning-based online approximate optimal control methods typically require a restrictive persistence of excitation (PE) condition for convergence. This paper presents a concurrent learning-based solution to the online approximate optimal regulation problem that eliminates the need for PE. The development is based on the observation that given a model of the system, the Bellman error, which quantifies the deviation of the system Hamiltonian from the optimal Hamiltonian, can be evaluated at any point in the state space. Further, a concurrent learning-based parameter identifier is developed to compensate for parametric uncertainty in the plant dynamics. Uniformly ultimately bounded (UUB) convergence of the system states to the origin, and UUB convergence of the developed policy to the optimal policy are established using a Lyapunov-based analysis, and simulations are performed to demonstrate the performance of the developed controller.
Li+-Diffusion und lokaler Ordnungsgrad : NMR-Spektroskopie an nanokristallinem und amorphem LixTiS2
Creators: name: Winter, Rudolf
Publisher: name: Hannover : Universität Hannover
Year: 1998
Subjects: subject: Titansulfid
subject: Lithium
subject: Interkalation
subject: Nanostrukturiertes Material
subject: Amorpher Festkörper
subject: NMR-Spektroskopie
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]
Radiation effects on the electronic structure of bilayer graphene
Creators: name: Morell, E. Suárez
name: Torres, L. E. F. Foa
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We report on the effects of laser illumination on the electronic properties of bilayer graphene. By using Floquet theory combined with Green's functions we unveil the appeareance of laser-induced gaps not only at integer multiples of $\hbar Ω/2$ but also at the Dirac point with features which are shown to depend strongly on the laser polarization. Trigonal warping corrections are shown to lead to important corrections for radiation in the THz range, reducing the size of the dynamical gaps. Furthermore, our analysis of the topological properties at low energies reveals that when irradiated with linearly polarized light, ideal bilayer graphene behaves as a trivial insulator, whereas circular polarization leads to a non-trivial insulator per valley.
description: 5 pages 3 figures
Expression, Anreicherung und Charakterisierung von rekombinantem Apolipoprotein A-I in CHO Zellen
Creators: name: Genschel, Janine
Publisher: name: Hannover : Gottfried Wilhelm Leibniz Universität Hannover
Year: 1998
Subjects: subject: High density lipoproteins (HDL)
subject: protein expression
subject: High Density Lipoproteine (HDL)
subject: Proteinexpression
subject: Apolipoprotein A-I
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]
title: Gerhard Fingerlin: Die alamannischen Gräberfelder von Güttingen und Merdingen in Südbaden. Germanische Denkmäler der Völkerwanderungszeit Serie A, Band XII. Berlin 1971
Creators: name: Christlein, Rainer
Publisher: name: University Library Heidelberg
Year: 2016

description: Gerhard Fingerlin: Die alamannischen Gräberfelder von Güttingen und Merdingen in Südbaden. Germanische Denkmäler der Völkerwanderungszeit Serie A, Band XII. Berlin (Verlag Walter de Gruyter & Co.) 1971. Textband XIV/ 308 S. und 2 Beilagen, Tafelband 126 Tafeln.
Diodengepumpte Festkörperlaser im Spektralbereich um 2[my]m für Anwendungen in der Lasermedizin
Creators: name: Fiebig, Michael
Publisher: name: Hannover : Universität
Year: 1998
Subjects: subject: Diode-pumped solid state lasers
subject: quasi-3-level system
subject: laser medicine
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]
e-MERLIN resolves Betelgeuse at wavelength 5 cm
Creators: name: Richards, A. M. S.
name: Davis, R. J.
name: Decin, L.
name: Etoka, S.
name: Harper, G. M.
name: Lim, J. J.
name: Garrington, S. T.
name: Gray, M . D.
name: McDonald, I.
name: O'Gorman, E.
name: Wittkowski, M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Convection, pulsation and magnetic fields have all been suggested as mechanisms for the transport of mass and energy from the optical photosphere of red supergiants, out to the region where the stellar wind is launched. We imaged the red supergiant Betelgeuse at 0.06-0.18 arcsec resolution, using e-MERLIN at 5.5--6.0 GHz, with a sensitivity of ~0.01 mJy/beam. Most of the radio emission comes from within an ellipse (0.235x0.218) arcsec^2 (~5x the optical radius), with a flux density of 1.62 mJy, giving an average brightness temperature ~1250 K. This radio photosphere contains two hotspots of 0.53 and 0.79 mJy/beam, separated by 90 milli-arcsec, with brightness temperatures 5400+/-600 K and 3800+/-500 K. Similar hotspots, at more than double the distance from the photosphere of those seen in any other regime, were detected by the less-sensitive `old' MERLIN in 1992, 1995 and 1996 and many exceed the photospheric temperature of 3600 K. Such brightness temperatures are high enough to emanate from pockets of chromospheric plasma. Other possibilities include local shock heating, the convective dredge-up of hot material or exceptionally cool, low density regions, transparent down to the hottest layer at ~40 milliarcsec radius. We also detect an arc 0.2--0.3 arcsec to the SW, brightness temperature ~150 K, in a similar direction to extensions seen on both smaller and larger scales in the infra-red and in CO at mm wavelengths. These preliminary results will be followed by further e-MERLIN, VLA and ALMA observations to help resolve the problem of mass elevation from 1 to 10 R* in red supergiants.
description: 6pp (incl. appendix), 3 figs Accepted by MNRAS letters 2013 Mar 12
Individualität und Bildungsprozesse : zum Konzept pädagogischer Professionalität aus der Perspektive universitärer Lehre
Creators: name: Gensicke, Dietmar
Publisher: name: Hannover : Universität
Year: 1998
Subjects: subject: Educational planning
subject: individualization
subject: pedagogical education
subject: professionalization
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie

description: [no abstract]
Halo Stochasticity from Exclusion and non-linear Clustering
Creators: name: Baldauf, Tobias
name: Seljak, Uroš
name: Smith, Robert E.
name: Hamaus, Nico
name: Desjacques, Vincent
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The clustering of galaxies in ongoing and upcoming galaxy surveys contains a wealth of cosmological information, but extracting this information is a non-trivial task since galaxies and their host haloes are stochastic tracers of the matter density field. This stochasticity is usually modeled as Poisson shot noise, which is constant as a function of wavenumber with amplitude given by 1/n, where n is the number density of galaxies. Here we use dark matter haloes in N-body simulations to show evidence for deviations from this simple behaviour and develop models that explain the behaviour of the large scale stochasticity. First, haloes are extended, non-overlapping objects, i.e., their correlation function needs to go to -1 on small scales. This leads to a negative correction to the stochasticity relative to the Poisson value at low wavenumber k, decreasing to zero for wavenumbers large compared to the inverse exclusion scale. Second, haloes show a non-linear enhancement of clustering outside the exclusion scale, leading to a positive stochasticity correction. Both of these effects go to zero for high-k, making the stochasticity scale dependent even for k<0.1 h/Mpc. We show that the corrections in the low-k regime are the same in Eulerian and Lagrangian space, but that the transition scale is pushed to smaller scales for haloes observed at present time, relative to the initial conditions. These corrections vary with halo mass and redshift. We also discuss simple applications of these effects to the galaxy samples with non-vanishing satellite fraction, where the stochasticity can again deviate strongly from the fiducial Poisson expectation. Overall these effects affect the clustering of galaxies at a level of a few percent even on very large scales and need to be modelled properly if we want to extract high precision cosmological information from the upcoming galaxy surveys.
description: 27 pages, 15 figures
Exploring the promise of police accountability: an examination of New York City's Civilian complaint review board (CCRB)
Creators: name: D'Souza, Amanda
Publisher: name: No Publisher Supplied
Year: 2022

description: Reports of police misconduct threaten the public’s trust in law enforcement. This has been repeatedly demonstrated through various citizen protests throughout American History (Harlem, 1964; Watts, 1965; Detroit, 1967; Los Angeles, 1991; New York, 1999). Only two years ago, despite a global pandemic, protests erupted within communities across the world over the abusive and unconstitutional treatment of largely Black and brown bodies. Officer misconduct coupled with a lack of accountability or discipline results in public distrust and negatively impacts departmental legitimacy. Traditionally, police agencies investigated civilian complaints of misconduct, excessive force, and abuse through internal administrative means. However, highly publicized deaths or abuse of force bolster concerns about the inability or unwillingness of the police to oversee themselves, and often results in demands for independent civilian review. Civilian oversight is “a procedure for providing input into the complaint process by individuals who are not sworn officers” (Walker, 2001:5). These organizations are popular, as they are argued to play a key role in promoting transparency, accountability, and departmental legitimacy. In fact, as the 21st Century Task Force on Policing notes, “without [civilian review boards], […] it is difficult, if not impossible for the police to maintain the public’s trust” (Task Force, 2015: 26). Despite these benefits, critics often lambaste these agencies for their failure to discipline officers, their inability to meaningfully modify policing practices, and their close relationship with the departments they are charged with overseeing. Thus, despite not actually having adequate tools or power, civilian review boards are actively pressed and called upon by the public to enhance police accountability. It is within this context that I have situated my dissertation. This dissertation will provide a case study of New York City’s Civilian Complaint Review Board (CCRB). It will examine the dynamic interactions which occur during monthly board meetings to better understand the complex ways in which the CCRB board presents itself as a powerful oversight agency, despite its (in effect) advisory role to the NYPD. Data for this project comes from the CCRB’s monthly meeting minutes and videos from 2014-2020 (n=83). There is a paucity of scholarly research examining how individuals within these oversight agencies navigate their roles, interact with each other, the public and the police, and how they respond to their organizational limitations. Thus, using the CCRB as a case study, I examine the individual interactions which occurred during monthly meetings, analyzing how these interactions inform and are situated within the larger context of police accountability and oversight.
Chemische Reaktion, Transport atomarer Sonden und PAC-Messungen an der polarisierbaren Metall-Oxid Grenzfläche Pt/ZrO2(Y2O2)
Creators: name: Langer, Götz
Publisher: name: Hannover : Universität
Year: 1998
Subjects: subject: Metal ceramic interface
subject: in situ spectroscopy
subject: diffusion
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]
Strategies for Reading New Texts
Creators: name: Leveque, Sophia C.
name: Gaston Arhin, Kaneisha
Publisher: name: Columbia University
Year: 2021
Subjects: Library research
Reading
Academic libraries
Library science

description: Reading and writing are necessary steps to research and learning. However, reading academic texts can be extremely challenging when you are entering a new field of practice. This electronic worksheet has suggestions to prompt working through new or difficult texts for readers at any level.
Untersuchungen zum Mechanismus der Katalyse und zu In vivo-Selektionssystemen für die Anreicherung von Mutanten der Restriktionsendonuklease EcoRI mit veränderter DNA-Bindungs- oder Spaltspezifität
Creators: name: Grabowski, Gabriele
Publisher: name: Hannover : Universität
Year: 1998
Subjects: subject: EcoRI
subject: catalytic mechanism
subject: in vivo selection system
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]
Turbulence in the two-dimensional Fourier-truncated Gross-Pitaevskii equation
Creators: name: Shukla, Vishwanath
name: Brachet, Marc
name: Pandit, Rahul
Publisher: name: arXiv
Year: 2013
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: We undertake a systematic, direct numerical simulation (DNS) of the two-dimensional, Fourier-truncated, Gross-Pitaevskii equation to study the turbulent evolutions of its solutions for a variety of initial conditions and a wide range of parameters. We find that the time evolution of this system can be classified into four regimes with qualitatively different statistical properties. First, there are transients that depend on the initial conditions. In the second regime, power-law scaling regions, in the energy and the occupation-number spectra, appear and start to develop; the exponents of these power-laws and the extents of the scaling regions change with time and depended on the initial condition. In the third regime, the spectra drop rapidly for modes with wave numbers $k > k_c$ and partial thermalization takes place for modes with $k < k_c$; the self-truncation wave number $k_c(t)$ depends on the initial conditions and it grows either as a power of $t$ or as $\log t$. Finally, in the fourth regime, complete-thermalization is achieved and, if we account for finite-size effects carefully, correlation functions and spectra are consistent with their nontrivial Berezinskii-Kosterlitz-Thouless forms.
description: 30 pages, 12 figures
Approximate optimal cooperative decentralized control for consensus in a topological network of agents with uncertain nonlinear dynamics
Creators: name: Kamalapurkar, Rushikesh
name: Dinh, Huyen
name: Walters, Patrick
name: Dixon, Warren
Publisher: name: arXiv
Year: 2013
Subjects: subject: Systems and Control (eess.SY)
subject: Optimization and Control (math.OC)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Mathematics

description: Efforts in this paper seek to combine graph theory with adaptive dynamic programming (ADP) as a reinforcement learning (RL) framework to determine forward-in-time, real-time, approximate optimal controllers for distributed multi-agent systems with uncertain nonlinear dynamics. A decentralized continuous time-varying control strategy is proposed, using only local communication feedback from two-hop neighbors on a communication topology that has a spanning tree. An actor-critic-identifier architecture is proposed that employs a nonlinear state derivative estimator to estimate the unknown dynamics online and uses the estimate thus obtained for value function approximation.
Free Noncommutative Hereditary Kernels: Jordan Decomposition, Arveson Extension, Kernel Domination
Creators: name: Ball, Joseph A.
name: Marx, Gregory
name: Vinnikov, Victor
Publisher: name: Deutsche Mathematiker-Vereinigung
Year: 2022

description: We discuss (i) a quantized version of the Jordan decomposition theorem for a complex Borel measure on a compact Hausdorff space, namely, the more general problem of decomposing a general noncommutative kernel (a quantization of the standard notion of kernel function) as a linear combination of completely positive noncommutative kernels (a quantization of the standard notion of positive definite kernel). Other special cases of (i) include: the problem of decomposing a general operator-valued kernel function as a linear combination of positive kernels (not always possible), of decomposing a general bounded linear Hilbert-space operator as a linear combination of positive linear operators (always possible), of decomposing a completely bounded linear map from a $C^*$-algebra $\mathcal A$ to an injective $C^*$-algebra $\mathcal L(\mathcal Y)$ as a linear combination of completely positive maps from $\mathcal A$ to $\mathcal L(\mathcal Y)$ (always possible). We also discuss (ii) a noncommutative kernel generalization of the Arveson extension theorem (any completely positive map $\phi$ from an operator system ${\mathbb S}$ to an injective $C^*$-algebra $\mathcal L(\mathcal Y)$ can be extended to a completely positive map $\phi_e$ from a $C^*$-algebra containing ${\mathbb S}$ to $\mathcal L(\mathcal Y)$), and (iii) a noncommutative kernel version of a Positivstellensatz (i.e., finding a certificate to explain why one kernel is positive at points where another given kernel is strictly positive).
description: DOCUMENTA MATHEMATICA, Vol 27 (2022), p. 1985-2040
Neuartige hocheffiziente Silizium-Solarzellen mit beidseitiger Lichtempfindlichkeit
Creators: name: Hübner, Andreas
Publisher: name: Hannover : Universität
Year: 1998
Subjects: subject: Solar cell
subject: silicon
subject: floating junction
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau::621 | Angewandte Physik::621,3 | Elektrotechnik, Elektronik

description: [no abstract]
A Model Theory Approach to Structural Limits
Creators: name: Nesetril, Jaroslav
name: De Mendez, Patrice Ossona
Publisher: name: arXiv
Year: 2013
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: The goal of this paper is to unify two lines in a particular area of graph limits. First, we generalize and provide unified treatment of various graph limit concepts by means of a combination of model theory and analysis. Then, as an example, we generalize limits of bounded degree graphs from subgraph testing to finite model testing.
Expression und Charakterisierung des Phosphatidylinositolglykan-A-Protein
Creators: name: Nischan, Claudia
Publisher: name: Hannover : Universität
Year: 1998
Subjects: subject: Paroxysmal nocturnal hemoglobinurea
subject: GPI-anchor biosynthesis
subject: PIG-A protein
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]
Solar constraints on hidden photons re-visited
Creators: name: Redondo, Javier
name: Raffelt, Georg
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We re-examine solar emission of hidden photons gamma' (mass m) caused by kinetic mixing. We calculate the emission rate with thermal field theory methods and with a kinetic equation that includes "flavor oscillations" and photon absorption and emission by the thermal medium. In the resonant case both methods yield identical emission rates which, in the longitudinal channel, are enhanced by a factor w_P^2/m^2 (plasma frequency w_P) in agreement with An, Pospelov and Pradler (2013). The Sun must not emit more energy in a "dark channel" than allowed by solar neutrino measurements, i.e., not more than 10% of its photon luminosity. Together with the revised emission rate, this conservative requirement implies a bound χ<4\times 10^-12 eV/m for the kinetic mixing parameter. This is the most restrictive stellar limit below m ~ 3 eV, whereas for larger masses the transverse channel dominates together with limits from other stars. A recent analysis of XENON10 data marginally improves the solar limit, leaving open the opportunity to detect solar hidden photons with future large-scale dark matter experiments. Detecting low-mass hidden photons with the ALPS-II photon-regeneration experiment also remains possible.
description: 17 pages, 4 figures
⚘ Semiotics and Education: Action-Theoretical Point of View ☀ Eetu Pikkarainen
Creators: name: Pikkarainen, Eetu
Publisher: name: Instituto de Estudos Filosóficos
Year: 2022
Subjects: Action
Education
Learning
Perception
Semiotics
Teaching
Theory

description: Seek to learn... and you will bring about changes in your skills that will facilitate a better course of action in the future.

This event is part of the activities of the 2022 International Open Seminar on Semiotics: a Tribute to John Deely on the Fifth Anniversary of His Passing, cooperatively organized by the Institute for Philosophical Studies of the Faculty of Arts and Humanities of the University of Coimbra, the Lyceum Institute, the Deely Project, Saint Vincent College, the Iranian Society for Phenomenology at the Iranian Political Science Association, the International Association for Semiotics of Space and Time, the Institute for Scientific Information on Social Sciences of the Russian Academy of Sciences, the Semiotic Society of America, the American Maritain Association, the International Association for Semiotic Studies, the International Society for Biosemiotic Studies, the International Center for Semiotics and Intercultural Dialogue, Moscow State Academic University for the Humanities and the Mansarda Acesa with the support of the FCT - Foundation for Science and Technology, I.P., of the Ministry of Science, Technology and Higher Education of the Government of Portugal under the UID/FIL/00010/2020 project.

***

Eetu Pikkarainen works as a university lecturer at the Faculty of Education in the University of Oulu (Finland). His main research area is theory, philosophy, and semiotics of education. He is a founding member and the web coordinator in the International Network of Semiotics and Education (https://wwwedu.oulu.fi/semed/). Lately, he has turned his attention to research combining semiotics with perceptual control theory.

***

Homepage: https://www.uc.pt/fluc/uidief/act/io2s
Auditorium: https://www.uc.pt/fluc/uidief/act/io2s/auditorium

***

Technical support assured by Robert Junqueira.
The cover image for the video was designed by Zahra Soltani.
Klonierung der Gene der Ribonucleotid-Reduktasen von Corynebacterium ammoniagenes und Corynebacterium glutamicum
Creators: name: Oehlmann, Wulf
Publisher: name: Hannover : Universität
Year: 1998
Subjects: subject: Corynebacterium ammoniagenes
subject: Ribonucleotidreduktasen
subject: Genklonierung
subject: Corynebacterium glutamicum
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]
Polarisations-FTIR-Spektroskopie und SPA-LEED zur Wechselwirkung von Schwefeldioxid mit den Oberflächen CsF(100), NaCl(100), MgO(100) und MgO(110)
Creators: name: Henseler, Heiner
Publisher: name: Hannover : Universität
Year: 1998
Subjects: subject: Surface analysis
subject: sulfur dioxide
subject: catalysis
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]
Ein System zur Übertragung multimedialer Echtzeitdatenströme über Internet-Zugangsnetze
Creators: name: Grüneberg, Lutz
Publisher: name: Hannover : Universität
Year: 1998
Subjects: subject: Internet protocols
subject: MBone
subject: multimedia conferencing
subject: Dewey Decimal Classification::000 | Allgemeines, Wissenschaft::000 | Informatik, Wissen, Systeme::004 | Informatik

description: [no abstract]
Kommunale Abfallpolitik : Ökologischer Strukturwandel und politisches Lernen
Creators: name: Lamping, Wolfram
Publisher: name: Hannover : Universität
Year: 1998
Subjects: subject: Environmental policy
subject: local waste management policy
subject: local government research
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::330 | Wirtschaft
subject: Dewey Decimal Classification::300 | Sozialwissenschaften, Soziologie, Anthropologie::320 | Politik

description: [no abstract]
Polarisationsgradientenkühlen eines langsamen Atomstrahls
Creators: name: Rauner, Max
Publisher: name: Hannover : Universität
Year: 1998
Subjects: subject: Laser cooling
subject: atom optics
subject: quantum optics
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]
Optoakustische Tomographie mit laserinduziertem Ultraschall in der medizinischen Diagnostik
Creators: name: Lohmann, Stefan
Publisher: name: Hannover : Universität
Year: 1998
Subjects: subject: Laser-induced pressure transients
subject: optical properties
subject: on-line-dosimetry
subject: Dewey Decimal Classification::600 | Technik::610 | Medizin, Gesundheit
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]
A Behavioural Perspective on the Early Evolution of Nervous Systems: A Computational Model of Excitable Myoepithelia
Creators: name: van Elburg, Ronald A. J.
name: de Wiljes, Oltman O.
name: Biehl, Michael
name: Keijzer, Fred A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: Pattern Formation and Solitons (nlin.PS)
subject: Populations and Evolution (q-bio.PE)
subject: Tissues and Organs (q-bio.TO)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: How the very first nervous systems evolved remains a fundamental open question. Molecular and genomic techniques have revolutionized our knowledge of the molecular ingredients behind this transition but not yet provided a clear picture of the morphological and tissue changes involved. Here we focus on a behavioural perspective that centres on movement by muscle contraction. Building on the finding that molecules for chemical neural signalling predate multicellular animals, we investigate a gradual evolutionary scenario for nervous systems that consists of two stages: A) Chemically transmission of electrical activity between adjacent cells provided a primitive form of muscle coordination in a contractile epithelial tissue. B) This primitive form of coordination was subsequently improved upon by evolving the axodendritic processes of modern neurons. We use computer simulations to investigate the first stage. The simulations show that chemical transmission across a contractile sheet can indeed produce useful body scale patterns, but only for small-sized animals. For larger animals the noise in chemical neural signalling interferes. Our results imply that a two-stage scenario is a viable approach to nervous system evolution. The first stage could provide an initial behavioural advantage, as well as a clear scaffold for subsequent improvements in behavioural coordination.
description: 32 pages, 8 figures and 8 model tables
Biotechnologie lipophiler Substrate in wäßrigen Systemen : Terpentransformationen durch Basidiomyceten als Modell
Creators: name: Onken, Jens
Publisher: name: Hannover : Universität
Year: 1998
Subjects: subject: Fungi
subject: terpenes
subject: biotransformation
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie

description: [no abstract]
Inertia from an asymmetric Casimir effect
Creators: name: McCulloch, M. E.
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Physics (physics.gen-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The property of inertia has never been fully explained. A model for inertia (MiHsC or quantised inertia) has been suggested that assumes that 1) inertia is due to Unruh radiation and 2) this radiation is subject to a Hubble-scale Casimir effect. This model has no adjustable parameters and predicts the cosmic acceleration, and galaxy rotation without dark matter, suggesting that Unruh radiation indeed causes inertia, but the exact mechanism by which it does this has not been specified. The mechanism suggested here is that when an object accelerates, for example to the right, a dynamical (Rindler) event horizon forms to its left, reducing the Unruh radiation on that side by a Rindler-scale Casimir effect whereas the radiation on the other side is only slightly reduced by a Hubble-scale Casimir effect. This produces an imbalance in the radiation pressure on the object, and a net force that always opposes acceleration, like inertia. A formula for inertia is derived, and an experimental test is suggested.
description: 7 pages, 1 figure. Accepted by EPL (Europhysics Letters) on the 11th February, 2013
Untersuchungen zur Adsorption und Reaktion von Stickstoffwasserstoffsäure an NaCl(100)- und Si(111)-Einkristallflächen mittels Polarisations-FTIR-Spektroskopie, SPA-LEED, XPS und AFM
Creators: name: Oppermann, Jan
Publisher: name: Hannover : Universität
Year: 1998
Subjects: subject: Photoreaction
subject: hydrogen bonding
subject: silicon nitride
subject: hydrazoic acid
subject: NaCl(100)
subject: Si(111)
subject: adsorption
subject: Dewey Decimal Classification::500 | Naturwissenschaften::540 | Chemie
subject: Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik

description: [no abstract]
"Systemic Nonlocality" from Changing Constraints on Sub-Quantum Kinematics
Creators: name: Groessing, Gerhard
name: Fussy, Siegfried
name: Pascasio, Johannes Mesa
name: Schwabl, Herbert
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In a new approach to explain double-slit interference "from the single particle perspective" via "systemic nonlocality", we answer the question of how a particle going through one slit can "know" about the state of the other slit. We show that this comes about by changed constraints on assumed classical sub-quantum currents, which we have recently employed to derive probability distributions and Bohm-type trajectories in standard double-slit interference on the basis of a modern, 21st century classical physics. Despite claims in the literature that this scenario is to be described by a dynamical nonlocality that could best be understood in the framework of the Heisenberg picture (Tollaksen et al., 2010), we show that an explanation can be cast within the framework of the intuitively appealing Schroedinger picture as well. We refer neither to potentials nor to a "quantum force" or some other dynamics, but show that a "systemic nonlocality" may be obtained as a phenomenon that emerges from an assumed sub-quantum kinematics, which is manipulated only by changing its constraints as determined by the changes of the apparatus. Consequences are discussed with respect to the prohibition of superluminal signaling by standard relativity theory.
description: 23 pages, 6 figures; Invited talk "In Defense of Schroedinger" at the Sixth International Workshop DICE2012, Castiglioncello (Tuscany), September 17--21, 2012
Alignment Between Flattened Protostellar Infall Envelopes and Ambient Magnetic Fields
Creators: name: Chapman, Nicholas L.
name: Davidson, Jacqueline A.
name: Goldsmith, Paul F.
name: Houde, Martin
name: Kwon, Woojin
name: Li, Zhi-Yun
name: Looney, Leslie W.
name: Matthews, Brenda
name: Matthews, Tristan G.
name: Novak, Giles
name: Peng, Ruisheng
name: Vaillancourt, John E.
name: Volgenau, Nikolaus H.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present 350 micron polarization observations of four low-mass cores containing Class 0 protostars: L483, L1157, L1448-IRS2, and Serp-FIR1. This is the second paper in a larger survey aimed at testing magnetically regulated models for core-collapse. One key prediction of these models is that the mean magnetic field in a core should be aligned with the symmetry axis (minor axis) of the flattened YSO inner envelope (aka pseudodisk). Furthermore, the field should exhibit a pinched or hour-glass shaped morphology as gravity drags the field inward towards the central protostar. We combine our results for the four cores with results for three similar cores that were published in the first paper from our survey. An analysis of the 350 micron polarization data for the seven cores yields evidence of a positive correlation between mean field direction and pseudodisk symmetry axis. Our rough estimate for the probability of obtaining by pure chance a correlation as strong as the one we found is about 5%. In addition, we combine together data for multiple cores to create a source-averaged magnetic field map having improved signal-to-noise ratio, and this map shows good agreement between mean field direction and pseudodisk axis (they are within 15 degrees). We also see hints of a magnetic pinch in the source-averaged map. We conclude that core-scale magnetic fields appear to be strong enough to guide gas infall, as predicted by the magnetically regulated models. Finally, we find evidence of a positive correlation between core magnetic field direction and bipolar outflow axis.
description: Accepted for publication in ApJ. 16 pages, 8 figures in emulateapj format
Full characterization of the quantum linear-zigzag transition in atomic chains
Creators: name: Silvi, Pietro
name: De Chiara, Gabriele
name: Calarco, Tommaso
name: Morigi, Giovanna
name: Montangero, Simone
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: A string of repulsively interacting particles exhibits a phase transition to a zigzag structure, by reducing the transverse trap potential or the interparticle distance. The transition is driven by transverse, short wavelength vibrational modes. Based on the emergent symmetry Z_2 it has been argued that this instability is a quantum phase transition, which can be mapped to an Ising model in transverse field. We perform an extensive Density Matrix Renormalization Group analysis of the behaviour at criticality and evaluate the critical exponents and the central charge with high precision. We thus provide strong numerical evidence confirming that the quantum linear-zigzag transition belongs to the critical Ising model universality class. These results show that structural instabilities of one-dimensional interacting atomic arrays can simulate quantum critical phenomena typical of ferromagnetic systems.
description: 5 pages, 4 figures
title: Renate Meyer-Orlac: Mensch und Tod. Archäologischer Befund - Grenzen der Interpretaion. Hohenschäftlarn 1982
Creators: name: Gerhardt, Kurt
Publisher: name: University Library Heidelberg
Year: 2016

description: Renate Meyer-Orlac: Mensch und Tod. Archäologischer Befund - Grenzen der Interpretaion. Klaus Renner Verlag, Hohenschäftlarn 198. 470 Seiten.
Modal approach for tailoring the absorption in a photonic crystal membrane
Creators: name: Peretti, Romain
name: Gomard, Guillaume
name: Seassal, Christian
name: Letartre, Xavier
name: Drouard, Emmanuel
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: In this paper, we propose a method for tailoring the absorption in a photonic crystal membrane. For that purpose, we first applied Time Domain Coupled Mode Theory to such a subwavelength membrane and demonstrated that 100% resonant absorption can be reached even for a symmetric membrane, if degenerate modes are involved. Design rules were then derived from this model in order to tune the absorption. Subsequently, Finite Difference Time Domain simulations were used as a proof of concept and carried out on a low absorbing material (extinction coefficient=10-2) with a high refractive index corresponding to the optical indices of amorphous silicon at around 720 nm. In doing so, 85% resonant absorption was obtained, which is significantly higher than the commonly reported 50% maximum value. Those results were finally analyzed and confronted to theory so as to extend our method to other materials, configurations and applications.
Tensor network study of the Shastry-Sutherland model in zero magnetic field
Creators: name: Corboz, Philippe
name: Mila, Frederic
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We simulate the Shastry-Sutherland model in two dimensions by means of infinite projected entangled-pair states (iPEPS) - a variational tensor network method where the accuracy can be systematically controlled by the so-called bond dimension. Besides the well established dimer and Néel phase iPEPS confirms the presence of an intermediate phase with plaquette long-range order, and we determine its phase boundaries with high accuracy. The first order phase transition for $J=0.675(2)$ between dimer and plaquette phase is compatible with previous series expansion results. iPEPS predicts a weak first-order phase transition between plaquette and Néel phase occurring for $J=0.765(15)$. We do not find a stable intermediate columnar-dimer phase, even when we bias the state towards this order.
description: 11 pages, 11 figures, minor changes
Negativität als Struktur : eine Untersuchung ausgewählter Romane und Kurzgeschichten von Elizabeth Bowen
Creators: name: Hinrichs, Martina
Publisher: name: Hannover : Universität
Year: 1998
Subjects: subject: Negativity
subject: subjectivity
subject: modernism
subject: Dewey Decimal Classification::400 | Sprache, Linguistik::420 | Englisch

description: [no abstract]
R code for statistical analyses
Creators: name: Forthman, Michael
Publisher: name: figshare
Year: 2023
Subjects: Phylogeny and comparative analysis

description: R code for statistical analysis. When using this data, cite: Forthman, M., Gordon, E.R.L., Kimball, R.T. 2023. Low hybridization temperatures improve target capture success of invertebrate loci: a case study of leaf-footed bugs (Hemiptera: Coreoidea). R. Soc. Open Sci.
Revisiting literature observations on photodarkening in Yb3+doped fiber considering the possible presence of Tm impurities
Creators: name: Peretti, Romain
name: Gonnet, Cedric
name: Jurdyc, Anne-Marie
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: Ytterbium (Yb) doped fiber lasers are known to be affected by the creation of color centers during lasing (socalled photodarkening (PD)). In a previous work, this defect creation was investigated from a spectroscopic point of view, showing the presence of traces (ppb) of thulium (Tm) in the Yb doped fiber. It was shown that Tm has a strong impact on the defect creation process involved in PD. In this paper, we compare the results from the literature with our Tm hypothesis, without finding any contradiction. Moreover, this hypothesis can be an explanation for the discrepancies in the literature.
NEW SPECIES AND RECORDS OF XYLARIACEAE AND THEIR ALLIES FROM GUYANA WITH EMPHASIS ON ELUCIDATING THE BIOLOGY AND ECOLOGY OF XYLARIA KARYOPHTHORA, A PUTATIVE PATHOGEN OF GREENHEART (CHLOROCARDIUM SPP.) SEEDS
Creators: name: Husbands, Dillon R
Publisher: name: Purdue University Graduate School
Year: 2022
Subjects: Mycology

description: Over the last two decades, mycoflorostic studies undertaken in Guyanese forests have uncovered hundreds of new fungal species and genera. One of the recovered fungal families was the Xylariaceae, although most were not identified to species. Members of this family play ecological roles as decomposers, endophytes, and pathogens of vascular plants and grass species. In addition, this group is increasingly recognized as a significant source of novel metabolic products with potential for applications in medicine, agriculture, and industrial biofuel. Given its potential, we took a more targeted approach to the documentation of this group. Our sampling efforts drawing on more than two decades of field collections yielded ca. 90 species in 12 genera, including a putative pathogen, Xylaria karyophthora of the seeds of Chlorocardium spp (Greenheart). Despite the significance of Greenheart to the Guyanese economy, little is known about the biology and ecology of this fungus. Due to the lack of available resources to study this fungus, our objectives were two-fold: first, to sequence and annotate the genome of X. karyophthora to provide a resource for genome-centric explorations, and to use this genome to infer the biology and ecology of this fungus. We focused on identifying and characterizing secretomes, viz. carbohydrate-active enzymes (CAZymes) and secondary metabolites biosynthetic gene clusters (SMBGCs) to infer the nutritional strategy of this fungus. Our results suggest that X. karyophthora has the capacity to act as both an endophyte and a pathogen. To make further inferences about the population, we used SSR markers to elucidate the genetic diversity and population structure of X. karyophthora. X. karyophthora populations have high genetic diversity, potentially exploiting both outcrossing and inbreeding reproductive strategies, and demonstrate a pattern consistent with human-mediated spread. This work will contribute information on new species and records of Xylariaceous fungi and their allies from Guyana with particular emphasis on unraveling the epidemiology, genetic diversity, and population structure of X. karyophthora.
Modellierung des Blattflächenwachstums, der Befallsverläufe simultan auftretender pilzlicher Blattkrankheiten und der Auswirkungen auf den Ertrag an der Buschbohne (Phaseolus vulgaris L.)
Creators: name: Meier, Frank
Publisher: name: Hannover : Universität
Year: 1998
Subjects: subject: Epidemiology
subject: modelling
subject: phaseolus vulgaris
subject: Dewey Decimal Classification::600 | Technik::630 | Landwirtschaft, Veterinärmedizin

description: [no abstract]