9,248 Works

Learning to Operate a Fleet of Cars

Christian Fluri, Claudio Ruch, Julian Zilly, Jan Hakenberg & Emilio Frazzoli

Deciding Staged Battles of the Past: On the Rhetorics of Olaf Müller’s Historical Philosophy of Science

Michael Hampe
Since Plato’s massive critique of the Sophists rhetoric’s ill repute runs through the history of western philosophy denunciating methods of rhetoric as in large part dishonest persuasion strategies which are at most marginally interested in dealing with truths. This judgement falls way too short insofar as it distorts the historically grown stock labeled “rhetoric” not only in the Aristotelian work. With reference to Olaf Müller’s philosophical book (Mehr Licht: Goethe mit Newton im Streit um...

Higher species richness enhances yield stability in intensively managed grasslands with experimental disturbance

Eamon Haughey, Matthias Suter, Daniel Hofer, Nyncke J. Hoekstra, Jennifer C. McElwain, Andreas Lüscher & John A. Finn
Climate models predict increased frequency and severity of drought events. At an Irish and Swiss site, experimental summer droughts were applied over two successive years to grassland plots sown with one, two or four grassland species with contrasting functional traits. Mean yield and plot-to-plot variance of yield were measured across harvests during drought and after a subsequent post-drought recovery period. At both sites, there was a positive relationship between species richness and yield. Under rainfed...

The Endophytic Mycobiome of European Ash and Sycamore Maple Leaves: Geographic Patterns, Host Specificity and Influence of Ash Dieback

Markus Schlegel, Valentin Queloz & Thomas Niklaus Sieber
The European ash (Fraxinus excelsior) is threatened by the introduced ascomycete Hymenoscyphus fraxineus, the causal agent of ash dieback. Endophytic fungi are known to modulate their host’s resistance against pathogens. To understand possible consequences of ash dieback on the endophytic mycobiome, F. excelsior leaves were collected in naturally regenerated forests and the fungal communities analyzed by classic culture and Illumina amplicon sequencing using a newly developed and validated fungal-specific primer. Collections were done in the...

Amphibole and apatite insights into the evolution and mass balance of Cl and S in magmas associated with porphyry copper deposits

Cyril Chelle-Michou & Massimo Chiaradia
Chlorine and sulfur are of paramount importance for supporting the transport and deposition of ore metals at magmatic–hydrothermal systems such as the Coroccohuayco Fe–Cu–Au porphyry–skarn deposit, Peru. Here, we used recent partitioning models to determine the Cl and S concentration of the melts from the Coroccohuayco magmatic suite using apatite and amphibole chemical analyses. The pre-mineralization gabbrodiorite complex hosts S-poor apatite, while the syn- and post-ore dacitic porphyries host S-rich apatite. Our apatite data on...

Reliability of Wearable-Sensor-Derived Measures of Physical Activity in Wheelchair-Dependent Spinal Cord Injured Patients

Sophie Schneider, Werner Popp, Michael Brogioli, Urs Albisser, László Demkó, Isabelle Debecker, Inge-Marie Velstra, Roger Gassert & Armin Curt
Physical activity (PA) has been shown to have a positive influence on functional recovery in patients after a spinal cord injury (SCI). Hence, it can act as a confounder in clinical intervention studies. Wearable sensors are used to quantify PA in various neurological conditions. However, there is a lack of knowledge about the inter-day reliability of PA measures. The objective of this study was to investigate the single-day reliability of various PA measures in patients...

Background Free-Tropospheric Ice Nucleating Particle Concentrations at Mixed-Phase Cloud Conditions

Larissa Lacher, Paul J. DeMott, Ezra J. Levin, Kaitlyn J. Suski, Yvonne Boose, Assaf Zipori, Erik Herrmann, Nicolas Bukowiecki, Martin Steinbacher, Ellen Gute, Jonathan P.D. Abbatt, Ulrike Lohmann & Zamin A Kanji
Clouds containing ice are vital for precipitation formation and are important in determining the Earth's radiative budget. However, primary formation of ice in clouds is not fully understood. In the presence of ice nucleating particles (INPs), the phase change to ice is promoted, but identification and quantification of INPs in a natural environment remains challenging because of their low numbers. In this paper, we quantify INP number concentrations in the free troposphere (FT) as measured...

Gazette, Issue 15 (2012): FCL - Future Cities Laboratory

Tilak Doshi, Donald Low, Elaine Teo & Derek Vollmer

Transmission of Hepatitis B and D Viruses in an African Rural Community

Carlos A. Pinho-Nascimento, Martin W. Bratschi, Rene Höfer, Caroline C. Soares, Louisa Warryn, Jūlija Pečerska, Jacques C. Minyem, Izabel C.N.P. Paixão, Marcia T.B. De Moraes, Alphonse U. Boock, Christian Niel, Gerd Pluschke & Katharina Röltgen
According to the World Health Organization (WHO), an estimated 257 million people worldwide are chronically infected with hepatitis B virus (HBV), with approximately 15 million of them being coinfected with hepatitis D virus (HDV). To investigate the prevalence and transmission of HBV and HDV within the general population of a rural village in Cameroon, we analyzed serum samples from most (401/448) of the villagers. HBV surface antigen (HBsAg) was detected in 54 (13.5%) of the...

Parliaments in International Politics

Jofre Rocabert
The contestation of international decision-making is one of the most pressing problems affecting both national institutions and international organizations. As the main arenas of communal decision-making, the involvement of parliaments may be a solution to the legitimacy shortages of international decisions and the institutional paralysis that this may ensue. This dissertation examines two distinct processes that reveal the current place of parliaments in international politics. In the first part of my dissertation, I focus on...

Growth of Epithelial Organoids in a Defined Hydrogel

Nicolas Broguiere, Luca Isenmann, Christian Hirt, Till Ringel, Silja Placzek, Emma Cavalli, Femke Ringnalda, Lukas Villiger, Richard Züllig, Roger Lehmann, Gerhard Rogler, Markus H. Heim, Julia Schüler, Marcy Zenobi-Wong & Gerald Schwank
Epithelial organoids are simplified models of organs grown in vitro from embryonic and adult stem cells. They are widely used to study organ development and disease, and enable drug screening in patient‐derived primary tissues. Current protocols, however, rely on animal‐ and tumor‐derived basement membrane extract (BME) as a 3D scaffold, which limits possible applications in regenerative medicine. This prompted us to study how organoids interact with their matrix, and to develop a well‐defined hydrogel that...

Hyperdimensional Computing-based Multimodality Emotion Recognition with Physiological Signals

En-Jui Chang, Abbas Rahimi, Luca Benini & An-Yeu Wu
To interact naturally and achieve mutual sympathy between humans and machines, emotion recognition is one of the most important function to realize advanced human-computer interaction devices. Due to the high correlation between emotion and involuntary physiological changes, physiological signals are a prime candidate for emotion analysis. However, due to the need of a huge amount of training data for a high-quality machine learning model, computational complexity becomes a major bottleneck. To overcome this issue, brain-inspired...

Crack detection through spatio-temporal pattern recognition

Charilaos Mylonas, Imad Abdallah, Vasileios Ntertimanis & Eleni Chatzi

The effect of topography of upper-mantle discontinuities on SS precursors

Maria Koroni & Jeannot Trampert
Using the spectral-element method, we explored the effect of topography of upper-mantle discontinuities on the traveltimes of SS precursors recorded on transverse component seismograms. The latter are routinely used to infer the topography of mantle transition zone discontinuities. The step from precursory traveltimes to topographic changes is mainly done using linearised ray theory, or sometimes using finite-frequency kernels. We simulated exact seismograms in 1-D and 3-D elastic models of the mantle. In a second simulation,...

Morphology and optical properties of flame-made nanoparticles

Georgios Kelesidis

Laplacian dynamics on cographs: Controllability analysis through joins and unions

Shimaossadat Mousavi, Mohammad Haeri & Mehran Mesbahi
In this paper, we examine the controllability of Laplacian dynamic networks on cographs. Cographs appear in modeling a wide range of networks and include as special instances, the threshold graphs. In this work, we present necessary and sufficient conditions for the controllability of cographs, and provide an efficient method for selecting a minimal set of input nodes from which the network is controllable. In particular, we define a sibling partition in a cograph and show...

Strong structural controllability of signed networks

Shimaossadat Mousavi, Mohammad Haeri & Mehran Mesbahi
In this paper, we discuss the controllability of a family of linear time-invariant (LTI) networks defined on a signed graph. In this direction, we introduce the notion of positive and negative signed zero forcing sets for the controllability analysis of positive and negative eigenvalues of system matrices with the same sign pattern. A sufficient combinatorial condition that ensures the strong structural controllability of signed networks is then proposed. Moreover, an upper bound on the maximum...

Combining machine learning and surrogate modeling for data-driven uncertainty propagation in high-dimension

Christos Lataniotis, Stefano Marelli & Bruno Sudret

Sucrose-induced Receptor Kinase 1 is Modulated by an Interacting Kinase with Short Extracellular Domain

Xu N. Wu, Liangcui Chu, Lin Xi, Heidi Pertl-Obermeyer, Zhi Li, Kamil Sklodowski, Clara Sánchez-Rodríguez, Gerhard Obermeyer & Waltraud X. Schulze
Sucrose as a product of photosynthesis is the major carbohydrate translocated from photosynthetic leaves to growing nonphotosynthetic organs such as roots and seeds. These growing tissues, besides carbohydrate supply, require uptake of water through aquaporins to enhance cell expansion during growth. Previous work revealed Sucrose Induced Receptor Kinase, SIRK1, to control aquaporin activity via phosphorylation in response to external sucrose stimulation. Here, we present the regulatory role of AT3G02880 (QSK1), a receptor kinase with a...

Satellyptus: analysis and database of microsatellites from ESTs of Eucalyptus

Paulo Cezar Ceresini, Cristina Lacerda Soares Petrarolha Silva, Robson F. Missio, Elaine Costa Souza, Carlos N. Fischer, Ivan R. Guillherme, Ivo Gregorio, Eloiza H. Tajara Da Silva, Regina M. Barreto Cicarelli, Marco T. Alves Da Silva, José F. Garcia, Gustavo A. Avelar, Laercio R. Porto Neto, André R. Marçon, Maurício Bacci Junior & Danyelle C. Marini
The main goal of our research was to search for SSRs in the Eucalyptus EST FORESTs database (using a software for mining SSR-motifs). With this objective, we created a database for cataloging Eucalyptus EST-derived SSRs, and developed a bioinformatics tool, named Satellyptus, for finding and analyzing microsatellites in the Eucalyptus EST database. The search for microsatellites in the FORESTs database containing 71,115 Eucalyptus EST sequences (52.09 Mb) revealed 20,530 SSRs in 15,621 ESTs. The SSR...

Methoden zur datengetriebenen Lokalisierung des Verbesserungspotentials in Produktionsabläufen

Philip Roh
The aim of this scientific treatise is to support manufacturing companies in increas-ing the productivity of their production processes, one of their classic challenges. The methods presented in this thesis are developed to localize the potential for im-provement in production processes. On this basis, appropriate measures can be tak-en to improve the production process, for example through targeted financial in-vestments. The work presented is at the cutting edge of current developments: On the one hand,...

New Constraints on the Main Mineralization Event Inferred from the Latest Discoveries in the Bor Metallogenetic Zone (BMZ, East Serbia)

Miodrag Banješević, Vladica Cvetković, Albrecht Von Quadt, Darivojka Ljubović Obradović, Nebojša Vasić, Aleksandar Pačevski & Irena Peytcheva
This study aims at better constraining the link between magmatism and metallogeny in the south-easternmost sector of the Bor Metallogenetic Zone (BMZ), where the world-class copper and gold deposit of Čukaru Peki was recently discovered. The obtained U/Pb zircon ages confirm the earlier knowledge that the major Cu–Au porphyry and epithermal mineralization in the BMZ is genetically related to the first volcanic phase (‘Timok andesite’; 85–90 Ma). However, the data also suggest that during this...

Examining pelagic carbonate-rich sediments as an archive for authigenic uranium and molybdenum isotopes using reductive cleaning and leaching experiments

Matthew O. Clarkson, Kim Müsing, Morten B. Andersen & Derek Vance
Novel metal isotope systematics are increasingly used to understand environmental change in geological history. On a global scale, the isotopic budgets of these metals respond to a range of environmental processes, allowing them to trace complex changes in the global climate system and carbon cycle. In particular, uranium (U) and molybdenum (Mo) isotopes are useful tools for quantifying the global extent of oceanic anoxia and euxinia respectively. The oceanic signature of these metals is recorded...

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