cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
New collocation path-following approach for the optimal shape parameter using Kernel method
Creators: name: Saffah, Zouhair
name: Timesli, Abdelaziz
name: Lahmam, Hassane
name: Azouani, Abderrahim
name: Amdi, Mohamed
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: Meshless method
subject: Radial basic functions
subject: Shape parameter
subject: Optimization technique
subject: Homotopy continuation method
subject: 500 Naturwissenschaften und Mathematik::510 Mathematik::510 Mathematik

description: The goal of this work is to develop a numerical method combining Radial Basic Functions (RBF) kernel and a high order algorithm based on Taylor series and homotopy continuation method. The local RBF approximation applied in strong form allows us to overcome the difficulties of numerical integration and to treat problems of large deformations. Furthermore, the high order algorithm enables to transform the nonlinear problem to a set of linear problems. Determining the optimal value of the shape parameter in RBF kernel is still an outstanding research topic. This optimal value depends on density and distribution of points and the considered problem for e.g. boundary value problems, integral equations, delay-differential equations etc. These have been extensively attempts in literature which end up choosing this optimal value by tests and error or some other ad-hoc means. Our contribution in this paper is to suggest a new strategy using radial basis functions kernel with an automatic reasonable choice of the shape parameter in the nonlinear case which depends on the accuracy and stability of the results. The computational experiments tested on some examples in structural analysis are performed and the comparison with respect to the state of art algorithms from the literature is given.
Dois Should Not Link To Data
Creators: name: Hourclé, Joseph
Publisher: name: Zenodo
Year: 2013
Subjects: data-citation
digital-object-identifiers

description: In August of 2011, the National Academy of Science’s Board of Research Data and Information (BRDI) had a meeting on the topic of “Developing Data Attribution and Citation Practices and Standards”. As part of that meeting were various breakout groups to discuss issues that still remained regarding technical, scientific, and socio-cultural issues, the roles and actors that needed to be involved, and how to get additional feedback from the community.

The technical breakout group decided that the majority of the technical problems with citing data revolved around establishing the identity of what it was that we were attempting to cite. As such, our recommendations were to push some of the work back onto the data publishers to tell us how scientists should cite their data (to avoid different disciplines applying different rules), establish ‘data landing pages’ to describe, document and link to the data, and to provide those pages with persistent identifiers such as a DOI.

We present here some of the reasons that were discussed about why not to link directly to data, including:

recalibration, reaccessioning and other data impermanence, setting context and providing links to documentation, and

allowing selection of different packaging formats
description: DOI == Digital Object Identifier.    (as the poster never actually states this)
Connections between Spectra and Structure in Saturn's Main Rings Based on Cassini VIMS Data
Creators: name: Hedman, M. M.
name: Nicholson, P. D.
name: Cuzzi, J. N.
name: Clark, R. N.
name: Filacchione, G.
name: Capaccioni, F.
name: Ciarniello, M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Saturn's main rings exhibit variations in both their opacity and spectral properties on a broad range of spatial scales, and the correlations between these parameters can provide insights into the processes that shape the composition and dynamics of the rings. The Visual and Infrared Mapping Spectrometer (VIMS) instrument onboard the Cassini Spacecraft has obtained spectra of the rings between 0.35 and 5.2 microns with sufficient spatial resolution to discern variations on scales below 200 km. These relatively high-resolution spectral data reveal that both the depths of the near-infrared water-ice absorption bands and the visible spectral slopes are often correlated with structural parameters such as the rings' optical depth. Using a simplified model for the ring-particles' regolith properties, we have begun to disentangle the trends due to changes in the gross composition of the ring particles from those that may be due to shifts in the texture of the ring particles' regolith. Consistent with previous studies, this analysis finds that the C ring and the Cassini Division possess enhanced concentrations of a contaminant that absorbs light over a broad range of wavelengths. On the other hand, a second contaminant that preferentially absorbs at short visible and near-ultraviolet wavelengths is found to be more evenly distributed throughout the rings. The optical activity of this short-wavelength absorber increases in the inner B ring inwards of 100,000 km from Saturn center, which may provide clues to the origin of this contaminant. The spectral variations identified as shifts in the regolith texture are in some places clearly correlated with the ring's optical depth, and in other locations they appear to be associated with the disturbances generated by strong mean-motion resonances with Saturn's various moons.
description: 69 pages, 27 figures, accepted for publication in Icarus. Revised to reflect minor changes in text and figures made in proofs
Evaluation of short‐term safety of ultrasound‐guided foetal fluid sampling in the dog (Canis lupus familiaris)
Creators: name: Tal, Smadar
name: Bar-Gal, Gila Kahila
name: Arlt, Sebastian Patrick
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: allantoic fluid
subject: amniocentesis
subject: amniotic fluid
subject: dog
subject: foetal fluid centesis
subject: pregnancy
subject: 600 Technik, Medizin, angewandte Wissenschaften::630 Landwirtschaft::630 Landwirtschaft und verwandte Bereiche

description: Background: In humans, analysis of amniotic fluid is widely used for diagnostic and prognostic purposes. Amniocentesis has scarcely been used in veterinary medicine to date, despite a tremendous potential for clinical and research applications in dogs. Our study aimed to establish a safe method for foetal fluid sampling in female dogs. Methods: Two transabdominal ultrasound-guided methods were assessed: the "free hand" and the needle-guided bracket sampling. In addition, through a subsequent routinely scheduled ovariohysterectomy, fluid was directly collected. Samples from 98 conceptuses were collected at day 46.7 +/- 7.5 of pregnancy. Results: The amount of fluid retrieved varied between 0.5 and 5.0 ml per collection. Macroscopic examination of the uterus and conceptuses identified 53% of the puncture sites. Neither fluid leakage nor foetal injury was detected, and six hematomas (5.8%) were visible. Ultrasound-guided foetal fluid collection was found to be potentially safe, and it can be performed by using either transabdominal method. Conclusion: Foetal fluid collection is possible with relative ease and low short-term risk, and may open paths for diagnostic, therapeutic and research purposes in dogs. The procedure can provide new insights into prenatal clinical medicine, including diagnostics of foetal deaths, early identification of heritable diseases and so on.
Recommendations For Fits Headers
Creators: name: Hourclé, Joseph
Publisher: name: Zenodo
Year: 2012
Subjects: flexible-image-transport-system

description: We present an example of best practices for FITS Headers to improve documentation and accessibility of solar physics data distributed as FITS files.

We build on existing norms and standards, including ‘Proposed Keywords for SOHO’ and the FITS World Coordinate System (WCS) conventions, and include recommendations on the use of FITS features and extensions to help make data stored and distributed in FITS better suited for both present-day usage and for long-term archiving.

Our goals include:

	Allow both solar physicists and non-discipline scientists to easily understand what’s in a file from an instrument they’ve never dealt with before
	Allow scientists to quickly determine if the data is useful for their purposes.
	Allow scientists to find where to get documentation on how to use the data.
	Reduce the likelihood of keywords or data being misunderstood.
	Give data providers a template to work from when designing FITS headers for new missions.
	Allow scientists to determine which keywords are FITS or solar physics standards, and which are mission- or instrument-specific.
	Ensure the data is accessible, understandable and usable over the long-term.
	Reduce barriers to acknowledgment and citation of data.
	Provide for identification of files and observations to enable scientists to check if data has been deprecated and obtain an appropriate replacement.
Forty Years after the Discovery of Its Nucleolytic Activity: [Cu(phen)(2)](2+) Shows Unattended DNA Cleavage Activity upon Fluorination
Creators: name: Lüdtke, Carsten
name: Sobottka, Sebastian
name: Heinrich, Julian
name: Liebing, Phil
name: Wedepohl, Stefanie
name: Sarkar, Biprajit
name: Kulak, Nora
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: artificial nucleases
subject: copper complexes
subject: cytotoxicity
subject: fluorination
subject: phenanthroline
subject: 500 Naturwissenschaften und Mathematik::540 Chemie::540 Chemie und zugeordnete Wissenschaften

description: [Cu(phen)(2)](2+) (phen=1,10-phenanthroline) is the first and still one of the most efficient artificial nucleases. In general, when the phen ligand is modified, the nucleolytic activity of its Cu-II complex is significantly reduced. This is most likely due to higher steric bulk of such ligands and thus lower affinity to DNA. Cu-II complexes with phen ligands having fluorinated substituents (F, CF3, SF5, SCF3) surprisingly showed excellent DNA cleavage activity-in contrast to the unsubstituted [Cu(phen)(2)](2+)-in the absence of the otherwise required classical, bioabundant external reducing agents like thiols or ascorbate. This nucleolytic activity correlates well with the half-wave potentials E-1/2 of the complexes. Cancer cell studies show cytotoxic effects of all complexes with fluorinated ligands in the low mu m range, whereas they were less toxic towards healthy cells (fibroblasts).
Instant uplifted inflation: A solution for a tension between inflation and SUSY breaking scale
Creators: name: Yamada, Yusuke
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The Hubble parameter during the inflationary era must be smaller than the gravitino mass if the moduli are stabilized by the Kachru-Kallosh-Linde-Trivedi mechanism. This condition represents the difficulty to combine the low scale SUSY breaking and the high scale inflation. We propose a simple mechanism which can naturally separate the inflation scale from the SUSY breaking scale today.
description: 20 pages, 7 figures v2: typos corrected and references about inflection point inflation added v3: a subsection and references added v4:typos corrected
Characterization of CHARK, an unusual cytokinin receptor of rice
Creators: name: Halawa, Mhyeddeen
name: Cortleven, Anne
name: Schmulling, Thomas
name: Heyl, Alexander
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: Oryza sativa L.
subject: Arabidopsis thaliana
subject: comparative genomics
subject: signal perception
subject: structural basis
subject: kinase activity
subject: evolution
subject: gene
subject: 500 Naturwissenschaften und Mathematik::580 Pflanzen (Botanik)::580 Pflanzen (Botanik)

description: The signal transduction of the plant hormone cytokinin is mediated by a His-to-Asp phosphorelay. The canonical cytokinin receptor consists of an extra cytoplasmic hormone binding domain named cyclase/histidine kinase associated sensory extracellular (CHASE) and cytoplasmic histidine kinase and receiver domains. In addition to classical cytokinin receptors, a different type receptor-named CHASE domain receptor serine/threonine kinase (CHARK)-is also present in rice. It contains the same ligand binding domain as other cytokinin receptors but has a predicted Ser/Thr-instead of a His-kinase domain. Bioinformatic analysis indicates that CHARK is a retrogene and a product of trans-splicing. Here, we analyzed whether CHARK can function as a bona fide cytokinin receptor. A biochemical assay demonstrated its ability to bind cytokinin. Transient expression of CHARK in protoplasts increased their response to cytokinin. Expression of CHARK in an Arabidopsis receptor double mutant complemented its growth defects and restored the ability to activate cytokinin response genes, clearly demonstrating that CHARK functions as a cytokinin receptor. We propose that the CHARK gene presents an evolutionary novelty in the cytokinin signaling system.
K. T. Kanz, Nationalismus und internationale Zusammenarbeit in den Naturwissenschaften. Die deutsch-französischen Wissenschaftsbeziehungen zwischen Revolution und Restauration 1789–1832, 1997
Creators: name: Espagne, M.
Publisher: name: Francia
Year: 2019

description: -
description: Francia, Bd. 26 Nr. 3 (1999)
Risk Planning and Management in Portuguese Companies—A Statistical Approach
Creators: name: Tavares, FO
name: Santos, E
name: Tavares, VC
name: Ratten, Vanessa
Publisher: name: La Trobe
Year: 2023
Subjects: classificationCode: 38
subject: Economics
classificationCode: 35
subject: Commerce, management, tourism and services

description: The purpose of this article is to study risk management planning and risk management in Portuguese companies. The methodology used is of a quantitative nature, based on a questionnaire survey that analyzes the risk management planning and risk management of 1647 Portuguese companies from different sectors of activity. The results allow us to conclude that the aspects that most manifest themselves in the perceptions of risk management planning are having a management plan that includes the relationship with customers, suppliers, and employees, as well as an updated security plan. This study intends to contribute to academic knowledge and for companies to know and master the concepts of risk management planning and risk management in its different aspects, helping the adoption of strategies to better plan risk management. The results make it possible to understand the differences in planning and risk management between larger and smaller companies, between older and younger companies, and between family and non-family companies. These results can contribute to increasing corporate sustainability and improving performance in planning and managing corporate risks.
Collaborative Downloading in VANET using Network Coding
Creators: name: Firooz, Mohammad H.
name: Roy, Sumit
Publisher: name: arXiv
Year: 2012
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Data downloading on the fly is the base of commercial data services in vehicular networks, such as office-onwheels and entertainment-on-wheels. Due to the sparse spacial distribution of roadside Base Stations (BS) along the road, downloading through Roadside-to-Vehicle (R2V) connections is intermittent.When multiple vehicles with geographical proximity have common interest in certain objects to download, they can collaborate to reduce significantly their overall download time. In this paper, we investigate application of Network Coding (NC) in collaborative downloading (CD). We focus on the R2V part of CD, and analytically derive probability distribution and expected value of amount of time needed to deliver all information to the vehicles with and without NC. Our results show that using NC slightly improves the downloading time in addition to removing any need for having any sort of uplink communications from vehicles to the infrastructure.
description: conference, 7 Pages, 3 Figures; Published, in Proceedings of IEEE International Conference on Communications (ICC'12) 2012
Benzothiazolium salts as reagents for the deoxygenative perfluoroalkylthiolation of alcohols
Creators: name: Ariamajd, Armin
name: Gerwien, Nils J.
name: Schwabe, Benjamin
name: Dix, Stefan
name: Hopkinson, Matthew N.
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: alcohols
subject: benzothiazolium salts
subject: deoxygenative reactions
subject: fluorine
subject: perfluoroalkylthiolation
subject: thioethers
subject: 500 Naturwissenschaften und Mathematik::540 Chemie::547 Organische Chemie

description: A series of 2-(perfluoroalkylthio)benzothiazolium (BT-SRF) salts have been synthesized that serve as convenient sources of hitherto underexplored perfluoroalkylthiolate anions. An investigation of their reactivity in a deoxygenative nucleophilic substitution reaction led to the development of an unprecedented process that provides pentafluoroethyl and heptafluoropropyl thioethers directly from readily available alcohols.
The response of mesospheric H2O and CO to solar irradiance variability in models and observations
Creators: name: Karagodin-Doyennel, Arseniy
name: Rozanov, Eugene
name: Kuchar, Ales
name: Ball, William
name: Arsenovic, Pavle
name: Remsberg, Ellis
name: Jöckel, Patrick
name: Kunze, Markus
name: Plummer, David A.
name: Stenke, Andrea
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: water vapor
subject: climate model
subject: cycle
subject: photolysis
subject: signal
subject: stratosphere
subject: atmosphere
subject: region
subject: 500 Naturwissenschaften und Mathematik::550 Geowissenschaften, Geologie::551 Geologie, Hydrologie, Meteorologie

description: Water vapor (H2O) is the source of reactive hydrogen radicals in the middle atmosphere, whereas carbon monoxide (CO), being formed by CO2 photolysis, is suitable as a dynamical tracer. In the mesosphere, both H2O and CO are sensitive to solar irradiance (SI) variability because of their destruction/production by solar radiation. This enables us to analyze the solar signal in both models and observed data. Here, we evaluate the mesospheric H2O and CO response to solar irradiance variability using the Chemistry-Climate Model Initiative (CCMI-1) simulations and satellite observations. We analyzed the results of four CCMI models (CMAM, EMAC-L90MA, SOCOLv3, and CESM1-WACCM 3.5) operated in CCMI reference simulation REF-C1SD in specified dynamics mode, covering the period from 1984-2017. Multiple linear regression analyses show a pronounced and statistically robust response of H2O and CO to solar irradiance variability and to the annual and semiannual cycles. For periods with available satellite data, we compared the simulated solar signal against satellite observations, namely the GOZCARDS composite for 1992-2017 for H2O and Aura/MLS measurements for 2005-2017 for CO. The model results generally agree with observations and reproduce an expected negative and positive correlation for H2O and CO, respectively, with solar irradiance. However, the magnitude of the response and patterns of the solar signal varies among the considered models, indicating differences in the applied chemical reaction and dynamical schemes, including the representation of photolyzes. We suggest that there is no dominating thermospheric influence of solar irradiance in CO, as reported in previous studies, because the response to solar variability is comparable with observations in both low-top and high-top models. We stress the importance of this work for improving our understanding of the current ability and limitations of state-of-the-art models to simulate a solar signal in the chemistry and dynamics of the middle atmosphere.
Cosmic histories of star formation and reionization: An analysis with a power-law approximation
Creators: name: Yu, Yun-Wei
name: Cheng, K. S.
name: Chu, M. C.
name: Yeung, S.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: With a simple power-law approximation of high-redshift ($\gtrsim3.5$) star formation history, i.e., $\dotρ_*(z)\propto [(1+z)/4.5]^{-α}$, we investigate the reionization of intergalactic medium (IGM) and the consequent Thomson scattering optical depth for cosmic microwave background (CMB) photons. A constraint on the evolution index $α$ is derived from the CMB optical depth measured by the {\it Wilkinson Microwave Anisotropy Probe} (WMAP) experiment, which reads $α\approx2.18\lg{\mathscr{N}_γ}-3.89$, where the free parameter $\mathscr{N}_γ$ is the number of the escaped ionizing ultraviolet photons per baryon. Moreover, the redshift for full reionization, $z_f$, can also be expressed as a function of $α$ as well as $\mathscr{N}_γ$. By further taking into account the implication of the Gunn-Peterson trough observations to quasars for the full reionization redshift, i.e., $6\lesssim z_f \lesssim7$, we obtain $0.3\lesssimα\lesssim1.3$ and $80\lesssim\mathscr{N}_γ\lesssim230$. For a typical number of $\sim4000$ of ionizing photons released per baryon of normal stars, the fraction of these photons escaping from the stars, $f_{\rm esc}$, can be constrained to within the range of $(2.0-5.8)%$.
description: 10 pages, 4 figures, accepted for publication in JCAP
Supramolecular polymerization of sulfated dendritic peptide amphiphiles into multivalent L-selectin binders
Creators: name: Strassburger, David
name: Herziger, Svenja
name: Huth, Katharina
name: Urschbach, Moritz
name: Haag, Rainer
name: Besenius, Pol
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: L-selectin binders
subject: multivalency
subject: self-assembly in water
subject: supramolecular polymers
subject: 500 Naturwissenschaften und Mathematik::540 Chemie::547 Organische Chemie

description: The synthesis of a sulfate-modified dendritic peptide amphiphile and its self-assembly into one-dimensional rod-like architectures in aqueous medium is reported. The influence of the ionic strength on the supramolecular polymerization was probed via circular dichroism spectroscopy and cryogenic transmission electron microscopy. Physiological salt concentrations efficiently screen the charges of the dendritic building block equipped with eight sulfate groups and trigger the formation of rigid supramolecular polymers. Since multivalent sulfated supramolecular structures mimic naturally occurring L-selectin ligands, the corresponding affinity was evaluated using a competitive SPR binding assay and benchmarked to an ethylene glycol-decorated supramolecular polymer.
H. Streiter-Buscher (Hg.), Theodor Fontane. Unechte Korrespondenzen. Bd. 1: 1860–1865, Bd. 2: 1866–1870, 1996
Creators: name: Studt, C.
Publisher: name: Francia
Year: 2019

description: -
description: Francia, Bd. 26 Nr. 3 (1999)
Spatial Navigation and Working Memory
Creators: name: Bushinski, Alexa Kristina
name: Redick, Thomas
Publisher: name: Purdue University Graduate School
Year: 2023
Subjects: classificationCode: 520404
subject: Memory and attention

description: Spatial navigation is a complex skill that relies on many aspects of cognition. The followingstudies aimed to clarify the role of working memory in spatial navigation, and particularly, thepotentially differential contributions of verbal and visuospatial working memory. Study 1leveraged individual differences to understand how working memory differs among types ofnavigators and the predictiveness of verbal and visuospatial working memory. Participantscompleted multiple measures of verbal and visuospatial working memory and spatial navigation.Study 2 further evaluated the impact of a working memory load on spatial navigation performance.Using a dual-task paradigm, the decrement (or not) of performance on spatial navigation can becompared between control, verbal, and visuospatial conditions. Study 1 showed that individualdifferences in visuospatial working memory are more predictive than verbal working memory.However, Study 2 provides evidence for the necessary role for both verbal and visuospatialworking memory.
A possibility to solve the problems with quantizing gravity
Creators: name: Hossenfelder, S.
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: It is generally believed that quantum gravity is necessary to resolve the known tensions between general relativity and the quantum field theories of the standard model. Since perturbatively quantized gravity is non-renormalizable, the problem how to unify all interactions in a common framework has been open since the 1930s. Here, I propose a possibility to circumvent the known problems with quantizing gravity, as well as the known problems with leaving it unquantized: By changing the prescription for second quantization, a perturbative quantization of gravity is sufficient as an effective theory because matter becomes classical before the perturbative expansion breaks down. This is achieved by considering the vanishing commutator between a field and its conjugated momentum as a symmetry that is broken at low temperatures, and by this generates the quantum phase that we currently live in, while at high temperatures Planck's constant goes to zero.
description: replaced with published version
LA FIESTA TRAVESTI: LO POLÍTICO EN LA CULTURA POPULAR
Creators: name: David, Aruquipa
Publisher: name: Zenodo
Year: 2023
Subjects: memoria travesti
Fiesta popular
imaginario popular

description: Este texto surge como un reactivador de la memoria travesti[1] en Bolivia, para rendir homenaje a quiénes hemos vivido el travestismo[1] como un instrumento de lucha política, siendo las fiestas populares y las chicherías escenarios de rebeldía. La importancia de evidenciar momentos y personajes históricos es un acto de amor, y nombres como Gerardo Rosas el "Q´iwa Gerardo", Jaime del Rio, Carlos Espinoza "Ofelia" y Peter Alaiza "Barbarella", La Mónica y los Whapuris Galán en la actualidad, permiten visualizar que las historias no han quedado estancadas en la memoria, sino, continúan perviviendo y renovándose hasta la actualidad. El imaginario popular es potente, porque estas figuras han dejado huellas discursivas y estéticas que las convirtieron en referentes históricos hasta la actualidad.
An efficient implementation of massive neutrinos in non-linear structure formation simulations
Creators: name: Ali-Haïmoud, Yacine
name: Bird, Simeon
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Massive neutrinos make up a fraction of the dark matter, but due to their large thermal velocities, cluster significantly less than cold dark matter (CDM) on small scales. An accurate theoretical modelling of their effect during the non-linear regime of structure formation is required in order to properly analyse current and upcoming high-precision large-scale structure data, and constrain the neutrino mass. Taking advantage of the fact that massive neutrinos remain linearly clustered up to late times, this paper treats the linear growth of neutrino overdensities in a non-linear CDM background. The evolution of the CDM component is obtained via N-body computations. The smooth neutrino component is evaluated from that background by solving the Boltzmann equation linearised with respect to the neutrino overdensity. CDM and neutrinos are simultaneously evolved in time, consistently accounting for their mutual gravitational influence. This method avoids the issue of shot-noise inherent to particle-based neutrino simulations, and, in contrast with standard Fourier-space methods, properly accounts for the non-linear potential wells in which the neutrinos evolve. Inside the most massive late-time clusters, where the escape velocity is larger than the neutrino thermal velocity, neutrinos can clump non-linearly, causing the method to formally break down. It is shown that this does not affect the total matter power spectrum, which can be very accurately computed on all relevant scales up to the present time.
description: Version accepted by MNRAS. Implementation available at http://github.com/downloads/sbird/fs-neutrino/kspace-neutrino-2.tar.gz
Social networks influence farming practices and agrarian sustainability
Creators: name: Albizua, Amaia
name: Bennett, Elena M.
name: Larocque, Guillaume
name: Krause, Robert W.
name: Pascual, Unai
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: ecosystem services
subject: land-use
subject: farmers
subject: values
subject: intensification
subject: coproduction
subject: willingness
subject: valuation
subject: 300 Sozialwissenschaften::300 Sozialwissenschaften, Soziologie::304 Das Sozialverhalten beeinflussende Faktoren

description: The social-ecological effects of agricultural intensification are complex. We explore farmers' perceptions about the impacts of their land management and the impact of social information flows on their management through a case study in a farming community in Navarra, Spain, that is undergoing agricultural intensification due to adoption of large scale irrigation. We found that modern technology adopters are aware that their management practices often have negative social-ecological implications; by contrast, more traditional farmers tend to recognize their positive impacts on non-material benefits such as those linked with traditions and traditional knowledge, and climate regulation. We found that farmers' awareness about nature contributions to people co-production and their land management decisions determine, in part, the structure of the social networks among the farming community. Since modern farmers are at the core of the social network, they are better able to control the information flow within the community. This has important implications, such as the fact that the traditional farmers, who are more aware of their impacts on the environment, rely on information controlled by more intensive modern farmers, potentially jeopardizing sustainable practices in this region. We suggest that this might be counteracted by helping traditional farmers obtain information tailored to their practices from outside the social network.
E. Bozóky, A.-M. Helvétius (Hg.), Les reliques. Objets, cultes, symboles. Actes du colloque international de l'Université du Littoral-Côte d'Opale (Boulogne-sur-Mer) 4–6 septembre 1997, 1999
Creators: name: Röckelein, H.
Publisher: name: Francia
Year: 2019

description: Francia, Bd. 28 Nr. 1 (2001)
Flat Chern Band in a Two-Dimensional Organometallic Framework
Creators: name: Liu, Zheng
name: Wang, Zheng-Fei
name: Mei, Jia-Wei
name: Wu, Yong-Shi
name: Liu, Feng
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: By combining exotic band dispersion with nontrivial band topology, an interesting type of band structure, namely the flat chern band (FCB), has recently been proposed to spawn high-temperature fractional quantum hall states. Despite the proposal of several theoretical lattice models, however, it remains a doubt whether such a "romance of flatland" could exist in a real material. Here, we present a first-principles design of a two-dimensional (2D) Indium-Phenylene Organometallic Framework (IPOF) that realizes a nearly FCB right around the Fermi level by combining lattice geometry, spin-orbit coupling and ferromagnetism. An effective four-band model is constructed to reproduce the first-principles results. Our design in addition provides a general strategy to synthesize topologically nontrivial materials in virtue of organic chemistry and nanotechnology.
description: 5 pages, 2 figures and 1 table
Consistent Behavioral Syndrome Across Seasons in an Invasive Freshwater Fish
Creators: name: Lukas, Juliane
name: Kalinkat, Gregor
name: Miesen, Friedrich Wilhelm
name: Landgraf, Tim
name: Krause, Jens
name: Bierbach, David
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: animal personality
subject: dispersal
subject: range expansion
subject: invasive species
subject: thermally altered freshwaters
subject: guppy
subject: 500 Naturwissenschaften und Mathematik::590 Tiere (Zoologie)::597 Wechselwarme Wirbeltiere; Pisca (Fische)

description: Understanding the linkage between behavioral types and dispersal tendency has become a pressing issue in light of global change and biological invasions. Here, we explore whether dispersing individuals exhibit behavioral types that differ from those remaining in the source population. We investigated a feral population of guppies (Poecilia reticulata) that undergoes a yearly range shift cycle. Guppies are among the most widespread invasive species in the world, but in temperate regions these tropical fish can only survive in winter-warm freshwaters. Established in a thermally-altered stream in Germany, guppies are confined to a warm-water influx in winter, but can spread to peripheral parts as these become thermally accessible. We sampled fish from the source population and a winter-abandoned site in March, June and August. Fish were tested for boldness, sociability and activity involving open-field tests including interactions with a robotic social partner. Guppies differed consistently among each other in all three traits within each sample. Average trait expression in the source population differed across seasons, however, we could not detect differences between source and downstream population. Instead, all populations exhibited a remarkably stable behavioral syndrome between boldness and activity despite strong seasonal changes in water temperature and associated environmental factors. We conclude that random drift (opposed to personality-biased dispersal) is a more likely dispersal mode for guppies, at least in the investigated stream. In the face of fluctuating environments, guppies seem to be extremely effective in keeping behavioral expressions constant, which could help explain their successful invasion and adaptation to new and disturbed habitats.
Into Your (S)Kin: Toward a Comprehensive Conception of Empathy
Creators: name: Öhler Søvsø, Tue Emil
name: Burckhardt, Kirstin
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: empathy
subject: stoicism
subject: embodied cognition
subject: attachment
subject: phenomenology
subject: prosocial motivation
subject: affective intentionality
subject: 100 Philosophie und Psychologie::150 Psychologie::150 Psychologie

description: This paper argues for a comprehensive conception of empathy as comprising epistemic, affective, and motivational elements and introduces the ancient Stoic theory of attachment (Greek, oikeiosis) as a model for describing the embodied, emotional response to others that we take to be distinctive of empathy. Our argument entails that in order to provide a suitable conceptual framework for the interdisciplinary study of empathy one must extend the scope of recent "simulationalist" and "enactivist" accounts of empathy in two important respects. First, against the enactivist assumption that human mindreading capacities primarily rely on an immediate, quasi-perceptual understanding of other's intentional states, we draw on Alfred Schutz' analysis of social understanding to argue that reflective types of understanding play a distinct, but equally fundamental role in empathic engagements. Second, we insist that empathy also involves an affective response toward the other and their situation (as the empathizer perceives this). We suggest analyzing this response in terms of the Stoic concepts of attachment, concern, and a fundamental type of prosocial motivation, that can best be described as an "extended partiality." By way of conclusion, we integrate the above concepts into a comprehensive conceptual framework for the study of empathy and briefly relate them to current debates about empathic perception and prosocial motivation. The result, we argue, is an account that stays neutral with regard to the exact nature of the processes involved in producing empathy and can therefore accommodate discussion across theoretical divides-e.g., those between enactivist, simulationalist, and so-called theory-theorist approaches.
Formes modulaires de Hilbert modulo p et valeurs d'extensions galoisiennes
Creators: name: Breuil, Christophe
name: Diamond, Fred
Publisher: name: arXiv
Year: 2012
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11F80 (Primary) 22E50 (Secondary)

description: Let F be a totally real field, v an unramified place of F dividing p and rho a continuous irreducible two-dimensional mod p representation of G_F such that the restriction of rho to G_{F_v} is reducible and sufficiently generic. If rho is modular (and satisfies some weak technical assumptions), we show how to recover the corresponding extension between the two characters of G_{F_v} in terms of the action of GL_2(F_v) on the cohomology mod p.
description: in French, to appear in Annales Scientifiques de l'Ecole Normale Superieure
Control of electron-hole pair generation by biharmonic voltage drive of a quantum point contact
Creators: name: Vanevic, Mihajlo
name: Belzig, Wolfgang
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: A time-dependent electromagnetic field creates electron-hole excitations in a Fermi sea at low temperature. We show that the electron-hole pairs can be generated in a controlled way using harmonic and biharmonic time-dependent voltages applied to a quantum contact and obtain the probabilities of the pair creations. For a biharmonic voltage drive, we find that the probability of a pair creation decreases in the presence of an in-phase second harmonic. This accounts for the suppression of the excess noise observed experimentally [Gabelli and Reulet, arXiv:1205.3638] proving that dynamic control and detection of elementary excitations in quantum conductors are within the reach of the present technology.
description: 4+ pages, 4 figures; to appear in PRB Rapid Communications
A skipping rope translocation mechanism in a widespread family of DNA repair helicases
Creators: name: Roske, Johann J.
name: Liu, Sunbin
name: Loll, Bernhard
name: Neu, Ursula
name: Wahl, Markus C.
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: RNA helicases
subject: molprobity
subject: complexes
subject: features
subject: crystal
subject: binding
subject: core
subject: time
subject: 500 Naturwissenschaften und Mathematik::570 Biowissenschaften; Biologie::570 Biowissenschaften; Biologie

description: Mitomycin repair factor A represents a family of DNA helicases that harbor a domain of unknown function (DUF1998) and support repair of mitomycin C-induced DNA damage by presently unknown molecular mechanisms. We determined crystal structures of Bacillus subtilis Mitomycin repair factor A alone and in complex with an ATP analog and/or DNA and conducted structure-informed functional analyses. Our results reveal a unique set of auxiliary domains appended to a dual-RecA domain core. Upon DNA binding, a Zn2+-binding domain, encompassing the domain of unknown function, acts like a drum that rolls out a canopy of helicase-associated domains, entrapping the substrate and tautening an inter-domain linker across the loading strand. Quantification of DNA binding, stimulated ATPase and helicase activities in the wild type and mutant enzyme variants in conjunction with the mode of coordination of the ATP analog suggest that Mitomycin repair factor A employs similar ATPase-driven conformational changes to translocate on DNA, with the linker ratcheting through the nucleotides like a 'skipping rope'. The electrostatic surface topology outlines a likely path for the displaced DNA strand. Our results reveal unique molecular mechanisms in a widespread family of DNA repair helicases linked to bacterial antibiotics resistance.
A survey of equivariant map algebras with open problems
Creators: name: Neher, Erhard
name: Savage, Alistair
Publisher: name: arXiv
Year: 2012
Subjects: subject: Representation Theory (math.RT)
subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: Primary 17-02, Secondary 17A60, 17B10, 17B20, 17B56, 17B65, 17B67, 17B68

description: This paper presents an overview of the current state of knowledge in the field of equivariant map algebras and discusses some open problems in this area.
description: 18 pages. v2: Minor corrections
M. Parisse (Hg.), La correspondance d'un évêque carolingien. Frothaire de Toul (ca. 813–847), avec les lettres de Theuthilde, abbesse de Remiremont, 1998
Creators: name: Becher, M.
Publisher: name: Francia
Year: 2019

description: Francia, Bd. 28 Nr. 1 (2001)
Matrix theory origins of non-geometric fluxes
Creators: name: Chatzistavrakidis, Athanasios
name: Jonke, Larisa
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We explore the origins of non-geometric fluxes within the context of M theory described as a matrix model. Building upon compactifications of Matrix theory on non-commutative tori and twisted tori, we formulate the conditions which describe compactifications with non-geometric fluxes. These turn out to be related to certain deformations of tori with non-commutative and non-associative structures on their phase space. Quantization of flux appears as a natural consequence of the framework and leads to the resolution of non-associativity at the level of the unitary operators. The quantum-mechanical nature of the model bestows an important role on the phase space. In particular, the geometric and non-geometric fluxes exchange their properties when going from position space to momentum space thus providing a duality among the two. Moreover, the operations which connect solutions with different fluxes are described and their relation to T-duality is discussed. Finally, we provide some insights on the effective gauge theories obtained from these matrix compactifications.
description: 1+31 pages, reference list updated
PK-DB: pharmacokinetics database for individualized and stratified computational modeling
Creators: name: Grzegorzewski, Jan
name: Brandhorst, Janosch
name: Green, Kathleen
name: Eleftheriadou, Dimitra
name: Duport, Yannick
name: Barthorscht, Florian
name: Köller, Adrian
name: Ke, Danny Yu Jia
name: De Angelis, Sara
name: König, Matthias
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: caffeine elimination
subject: population pharmacokinetics
subject: codeine
subject: 500 Naturwissenschaften und Mathematik::570 Biowissenschaften; Biologie::570 Biowissenschaften; Biologie

description: A multitude of pharmacokinetics studies have been published. However, due to the lack of an open database, pharmacokinetics data, as well as the corresponding meta-information, have been difficult to access. We present PK-DB (https://pk-db.com), an open database for pharmacokinetics information from clinical trials. PK-DB provides curated information on (i) characteristics of studied patient cohorts and subjects (e.g. age, bodyweight, smoking status, genetic variants); (ii) applied interventions (e.g. dosing, substance, route of application); (iii) pharmacokinetic parameters (e.g. clearance, half-life, area under the curve) and (iv) measured pharmacokinetic time-courses. Key features are the representation of experimental errors, the normalization of measurement units, annotation of information to biological ontologies, calculation of pharmacokinetic parameters from concentration-time profiles, a workflow for collaborative data curation, strong validation rules on the data, computational access via a REST API as well as human access via a web interface. PK-DB enables meta-analysis based on data from multiple studies and data integration with computational models. A special focus lies onmeta-data relevant for individualized and stratified computational modeling with methods like physiologically based pharmacokinetic (PBPK), pharmacokinetic/pharmacodynamic (PK/PD), or population pharmacokinetic (pop PK) modeling.
Identifying Elusive Electromagnetic Counterparts to Gravitational Wave Mergers: an end-to-end simulation
Creators: name: Nissanke, Samaya
name: Kasliwal, Mansi
name: Georgieva, Alexandra
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Combined gravitational-wave (GW) and electromagnetic (EM) observations of compact binary mergers should enable detailed studies of astrophysical processes in the strong-field gravity regime. Networks of GW interferometers have poor angular resolution on the sky and their EM signatures are predicted to be faint. Therefore, a challenging goal will be to unambiguously pinpoint the EM counterparts to GW mergers. We perform the first comprehensive end-to-end simulation that focuses on: i) GW sky localization, distance measures and volume errors with two compact binary populations and four different GW networks, ii) subsequent detectability by a slew of multiwavelength telescopes and, iii) final identification of the merger counterpart amidst a sea of possible astrophysical false-positives. First, we find that double neutron star (NS) binary mergers can be detected out to a maximum distance of 400 Mpc (or 750 Mpc) by three (or five) detector GW networks respectively. NS -- black-hole (BH) mergers can be detected a factor of 1.5 further out. The sky localization uncertainties for NS-BH mergers are 50--170 sq. deg. (or 6--65 sq. deg.) for a three (or five detector) GW network respectively. Second, we quantify relative fractions of optical counterparts that are detectable by different size telescopes. Third, we present five case studies to illustrate the diversity of challenges in secure identification of the EM counterpart at low and high Galactic latitudes. For the first time, we demonstrate how construction of low-latency GW volumes in conjunction with local universe galaxy catalogs can help solve the problem of false positives.
description: ApJ in press, matches accepted ApJ version, 23 pages in emulateapj format, 15 figures, 4 tables