cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Discrete Gaussian Sampling Reduces to CVP and SVP
Creators: name: Stephens-Davidowitz, Noah
Publisher: name: arXiv
Year: 2015
Subjects: subject: Computational Complexity (cs.CC)
subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Computer and information sciences

description: The discrete Gaussian $D_{L- t, s}$ is the distribution that assigns to each vector $x$ in a shifted lattice $L - t$ probability proportional to $e^{-π\|x\|^2/s^2}$. It has long been an important tool in the study of lattices. More recently, algorithms for discrete Gaussian sampling (DGS) have found many applications in computer science. In particular, polynomial-time algorithms for DGS with very high parameters $s$ have found many uses in cryptography and in reductions between lattice problems. And, in the past year, Aggarwal, Dadush, Regev, and Stephens-Davidowitz showed $2^{n+o(n)}$-time algorithms for DGS with a much wider range of parameters and used them to obtain the current fastest known algorithms for the two most important lattice problems, the Shortest Vector Problem (SVP) and the Closest Vector Problem (CVP). Motivated by its increasing importance, we investigate the complexity of DGS itself and its relationship to CVP and SVP. Our first result is a polynomial-time dimension-preserving reduction from DGS to CVP. There is a simple reduction from CVP to DGS, so this shows that DGS is equivalent to CVP. Our second result, which we find to be more surprising, is a polynomial-time dimension-preserving reduction from centered DGS (the important special case when $ t = 0$) to SVP. In the other direction, there is a simple reduction from $γ$-approximate SVP for any $γ= Ω(\sqrt{n/\log n})$, and we present some (relatively weak) evidence to suggest that this might be the best achievable approximation factor. We also show that our CVP result extends to a much wider class of distributions and even to other norms.
description: SODA 2016
FPGA based Fast Prototyping System For Data Acquisition.
Creators: name: E N, ganesh
Publisher: name: figshare
Year: 2022
Subjects: subject: 90699 Electrical and Electronic Engineering not elsewhere classified
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: This paper presents a proposal for a rapid prototyping system for data acquisition devices based on FPGAs and microcontrollers. We also describe the implementation of a system for obtaining his IRIG-106 data based on the proposed approach
Analysis of mesh-based motion compensation in wavelet lifting of dynamical 3-D+t CT data
Creators: name: Schnurrer, Wolfgang
name: Richter, Thomas
name: Seiler, Jürgen
name: Kaup, André
Publisher: name: arXiv
Year: 2023
Subjects: subject: Image and Video Processing (eess.IV)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Factorized in the lifting structure, the wavelet transform can easily be extended by arbitrary compensation methods. Thereby, the transform can be adapted to displacements in the signal without losing the ability of perfect reconstruction. This leads to an improvement of scalability. In temporal direction of dynamic medical 3-D+t volumes from Computed Tomography, displacement is mainly given by expansion and compression of tissue. We show that these smooth movements can be well compensated with a mesh-based method. We compare the properties of triangle and quadrilateral meshes. We also show that with a mesh-based compensation approach coding results are comparable to the common slice wise coding with JPEG 2000 while a scalable representation in temporal direction can be achieved.
Impact of synthesis temperature on structure of carbon nanotubes and morphological and electrical characterization of their polymeric nanocomposites
Creators: name: Arjmand, Mohammad
name: Mirkhani, Seyyed Alireza
name: Pötschke, Petra
name: Krause, Beate
name: Sundararaj, Uttandaraman
Publisher: name: Melville, NY : AIP
Year: 2017
Subjects: subject: Carbon Nanotube Synthesis
subject: Chemical Vapor Deposition
subject: Electrical Conductivity
subject: Electromagnetic Interference Shielding
subject: Polyvinylidene Fluoride
subject: Konferenzschrift
subject: 530

description: Carbon nanotubes (CNTs) were synthesized by chemical vapor deposition technique at a broad range of temperatures, i.e. 550°C to 950°C (at 100°C intervals). CNTs were synthesized by flowing source and carrier gases (ethane, argon, and hydrogen) over Fe catalyst in a quartz tubular reactor. CNTs were melt mixed with a polyvinylidene fluoride (PVDF) matrix in a miniature mixer. The resulting nanocomposites were then compression molded, and electrically and morphologically characterized. Moreover, a wide range of characterization techniques were employed to obtain detailed information about the physical and morphological characteristics of CNTs. It was surprisingly observed that, despite the ascending trend of powder conductivity with the synthesis temperature, the nanocomposites made with (CNT)650°C had significantly lower percolation threshold (around 0.4wt.%) and higher electromagnetic interference shielding (20.3dB over the X-band for 1.1mm thickness) compared to the other temperatures. The characterization of nanofillers showed that the synthesis yield and quality of (CNT)650°C were highly superior to the other types of CNTs. At 850°C and 950°C, most of the synthesized carbonaceous materials formed graphitic structures around the sintered catalyst particles. It was also observed that the dispersion state of (CNT)650°C within the PVDF matrix was much better than that of CNTs synthesized at the other temperatures. Superior electrical properties of (CNT)650°C nanocomposites can be attributed to a combination of high synthesis yield, low diameter and decent quality of CNTs coupled with good state of dispersion within the PVDF matrix.
Effect of additives on MWCNT dispersion and electrical percolation in polyamide 12 composites
Creators: name: Socher, Robert
name: Krause, Beate
name: Pötschke, Petra
Publisher: name: Melville, NY : AIP
Year: 2017
Subjects: subject: Electrical resistivity
subject: Materials forming
subject: Nanocomposites
subject: Nanotubes
subject: Ionic liquids
subject: Chemical compounds
subject: Macromolecules
subject: Microscopy
subject: Konferenzschrift
subject: 530

description: The aim of this study was to decrease the electrical percolation threshold of multiwalled carbon nanotubes (MWCNTs) in a polyamide 12 matrix by the use of additives. Different kinds of additives were selected which either interact with the π-system of the MWCNTs (imidazolium based ionic liquid (IL) and perylene-3,4,9,10-tetracarboxylic dianhydride (PTCDA)) or improve the MWCNT wettability (cyclic butylene terephthalate, CBT). The composites were melt mixed using a DACA microcompounder. The electrical percolation threshold for PA12/MWCNT without additives, measured on compression molded plates, was found between 2.0 and 2.25 wt%. With all used additives, a significant reduction of the electrical percolation threshold could be achieved. Whereas the addition of IL and CBT resulted in MWCNT percolation at around 1.0 wt%, a slightly higher percolation threshold between 1.0 and 1.5 wt% was found for PTCDA as an additive. Interestingly, the electrical resistivity at higher loadings was decreased by nearly two decades when using CBT and one decade after application of PTCDA, whereas IL did not contribute to lower values in this range. In all cases macrodispersion as assessed by light microscopy was not improved and even worse as compared to non-modified composites. In summary, the results illustrate that these kinds of additives are able to improve the performance of PA12 based MWCNT nanocomposites.
Characterisation of potentially adverse rearing conditions and identification of reliable indicators for monitoring the health status in intensively farmed pikeperch
Creators: name: Schäfer, Nadine
Publisher: name: Universität Rostock
Year: 2021
Subjects: subject: 500 Natural sciences
subject: 570 Life science

description: This dissertation deals with the identification of suitable indicators for monitoring the health status of intensively farmed pikeperch, a fish species of great importance for the diversification of European aquaculture. Suitable candidate genes were identified to investigate potentially inadequate husbandry conditions as well as ontogenetic processes at the transcriptional level. Furthermore, it could be shown that reduced oxygen saturation (40%) and increased water temperatures (25 °C) do not lead to severe stress responses in juvenile fish.
Three groups of immigrants in Germany
Creators: name: Georges, Daniela
Publisher: name: Universität Rostock
Year: 2022
Subjects: subject: 300 Social sciences

description: In recent decades, international immigration has led to an increase in population diversity and a change in health profiles in Germany. This dissertation examines which determinants contribute to health inequalities in the context of a migrant background in Germany. The special focus is on the analysis of social and socio-structural characteristics to explain health differences between people with and without a migration background and within the population with a migration background.
Correlating New Physics Effects in Semileptonic $ΔC = 1$ and $ΔS = 1$ Processes
Creators: name: Fajfer, Svjetlana
name: Kamenik, Jernej Fesel
name: Korajac, Arman
name: Košnik, Nejc
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present constraints on the left-handed dimension-6 interactions that contribute to semileptonic and leptonic decays of $K$, $D$, pions and to nuclear beta decay. We employ the flavour covariant description of the effective couplings, identify universal CP phases of New Physics and derive constraints from decay rates and CP-odd quantities. As a result, we can predict the maximal effects of such flavoured NP in $D$ decays from stringent $K$ decay constraints and vice-versa.
description: 18 pages, 10 figures
Haploinsufficiency for Adrenomedullin Reduces Pinopodes and Diminishes Uterine Receptivity in Mice1
Creators: name: Caron, Kathleen M.
name: Wu, Yongqin
name: Li, Manyu
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2008

description: Adrenomedullin (AM) is a multifunctional peptide vasodilator that signals through a G-protein-coupled receptor when the receptor, called calcitonin receptor-like receptor (CL), is associated with a receptor activity-modifying protein 2 (RAMP2). We demonstrated previously that haploinsufficieny for each of these genes led to reduced maternal fertility, and that even a modest genetic reduction of AM peptide caused maternal defects in implantation, placentation, and fetal growth. Here, we further demonstrate that Adm+/− female mice displayed reduced pregnancy success rates that were not caused by defects in folliculogenesis, ovulation, or fertilization. The poor fertility of Adm+/− female mice could not be rescued by transfer of wild-type blastocysts, which suggested an underlying defect in uterine receptivity. In fact, we found that Adm, Calcrl, and Ramp2 gene expressions are tightly and spatiotemporally regulated in the luminal epithelial cells of the uterus during the estrus cycle and the peri-implantation period. RAMP3, which also generates an AM receptor when associated with CL, had a diametrically opposite expression pattern than that of Adm, Calcrl, and Ramp2 and was most robustly induced in the stroma of the uterus. Finally, we discovered that Adm+/− female mice have a substantially reduced number of pinopodes on the uterine luminal epithelial surface, which is indicative and possibly causative of the poor uterine receptivity. Taken together, our studies identify a new class of pharmacologically tractable proteins that are involved in establishing uterine receptivity through the regulation of pinopode formation.
Melt mixed composites of polypropylene with singlewalled carbon nanotubes for thermoelectric applications: Switching from p- to n-type behavior by additive addition
Creators: name: Pötschke; Petra
name: Krause, Beate
name: Luo, Jinji
Publisher: name: Melville, NY : AIP
Year: 2019
Subjects: subject: Electrical conductivity
subject: Polymers
subject: Thermoelectric effects
subject: Thermoelectric materials
subject: Nanotubes
subject: Leptons
subject: Konferenzschrift
subject: 530

description: Composites were prepared with polypropylene (PP) as the matrix and singlewalled CNTs (SWCNTs) of the type TUBALL from OCSiAl Ltd. as the conducting component by melt processing in a small-scale twin-screw compounder. In order to switch the typical p-type behavior of such composites from positive Seebeck coefficients (S) into n-type behavior with negative Seebeck coefficients, a non-ionic surfactant polyoxyethylene 20 cetyl ether (Brij58) was used and compared with a PEG additive, which was shown previously to be able to induce such switching. For PP-2 wt% SWCNT composites Brij58 is shown to result in n-type composites. The negative S values (up to −48.2 µV/K) are not as high as in the case of previous results using PEG (−56.6 µV/K). However, due to the more pronounced effect of Brij58 on the electrical conductivity, the achieved power factors are higher and reach a maximum of 0.144 µW/(m·K2) compared to previous 0.078 µW/(m·K2) with PEG. Dispersion improvement depends on the type of SWCNTs obtained by using varied synthesis/treatment conditions. Solution prepared composites of PEG with SWCNTs also have negative S values, indicating the donation of electrons from PEG to the SWCNTs. However, such composites are brittle and not suitable as thermoelectric materials.
Strategy and organizational culture – Conceptualizing the interplay of key concepts in communication
Creators: name: Winkler, Luisa
name: Zerfass, Ansgar
Publisher: name: Globe: A Journal of Language, Culture and Communication
Year: 2016

description: Organizational culture and strategy have had a long and varied history in communication research. Different definitions go hand in hand at several levels to analyze their nature and impact. The cultural roots of organizations and the need for flexible strategic communication raise the question: What are the similarities between organizational culture and strategies and do both concepts influence each another? Embedded in dynamic environments and coping with complexity, organizational culture and strategy seem to be two sides of the same coin – stability from the past and flexibility for the future. But strategies cannot be implemented by neglecting culture. Therefore, the paper’s purpose is three-fold. First, it will discuss via a literature review the resemblance between the definition of strategy and organizational culture as patterns that evolve over time. This will be applied to the CCO-principle, whereby culture and strategy are both an outcome of the four flows of communication and an influence on the constitution of the organization as well as on its identity. Finally, the paper will explain how organizational culture goes hand in hand with strategic communication and how this yields insights for science and practice. In short, the paper will merge two important concepts of organizational communication. According to this, every strategy implementation has to consider culture – while culture implies stability and consistency, strategies require flexibility and change over time.
description: Globe: A Journal of Language, Culture and Communication, Vol 3 (2016)
null Hydrierreaktion von Monobenzyltoluol Isomeren
Creators: name: Leinweber, Anatol
Publisher: name: Universität Rostock
Year: 2021
Subjects: subject: 540 Chemistry & allied sciences
subject: 624 Structural and Environmental Engineering
subject: 660 Chemical engineering

description: Im Rahmen dieser Arbeit wurde das isomere LOHC-System Monobenzyltoluol untersucht. Dazu wurde das Isomer-Gemisch zunächst destillativ aufgetrennt und anschließend die Destillate im Rahmen von Hydrierversuchen untersucht. Es wurden mögliche Reaktionsprodukte, Reaktionsnetzwerke sowie kinetische Einflussfaktoren identifiziert. Des Weiteren wurde die Reaktionsmischung mittels Raman-Spektrometrie in situ vermessen. Das Raman-System wurde anhand multivariater Methoden (PCA,PLSR, MCR) kalibriert. Schließlich wurde die Hydrierreaktion von Monobenzyltoluol anhand eines Kinetik-Modells abgebildet.
The dialectics between language and culture
Creators: name: Dam, Lotte
Publisher: name: Globe: A Journal of Language, Culture and Communication
Year: 2016

description: This paper takes point of departure in the view that “No particular language or way of speaking has a privileged view of the world as it "really" is” (Romaine 1999, 20). Neither the structure of a language nor the way people speak about the world are given by nature, but are negotiated and constructed by language users. Language and language use reflect different conceptualizations of the world and are related to the culture in different communities. When children are born, they grow up as members of a linguistic community based on earlier members’ conceptualizations and negotiations over time. They integrate the constructed linguistic categories and their own conceptualizations and culture are influenced by the language and language use. Gradually, they themselves become part of the negotiations of language and new categories are handed down to new members. This means that language and culture are dialectic my nature. The aim of this paper is, within a societal dimension, to discuss the dialectic interplay between language and culture; how linguistic categories emerge, what they reflect, and what impact they have. This is done within the framework of cultural linguistics based on a constructivist approach to language and culture. It is an additional aim of the paper to illustrate that a direct foundation in a constructivist approach is useful in order to highlight the meaning and impact of language in a societal dimension.
description: Globe: A Journal of Language, Culture and Communication, Vol 4 (2016)
Influence of a supplemental filler in twin-screw extruded PP/CNT composites using masterbatch dilution
Creators: name: Müller, Michael Thomas
name: Krause, Beate
name: Kretzschmar, Bernd
name: Pötschke, Petra
Publisher: name: Melville, NY : AIP
Year: 2019
Subjects: subject: Electrical resistivity
subject: Nanotubes
subject: Chemical elements
subject: Polymers
subject: Konferenzschrift
subject: 530

description: In this study commercially available multiwalled carbon nanotubes (2-8 wt.%) were incorporated in polypropylene (PP) by direct powder feeding or by a masterbatch dilution procedure using a twin-screw extruder. The influence of a supplemental, electrical non-conductive talc or electrically conductive carbon black (CB), filler on the resulting composite properties was investigated. In comparison to the direct carbon nanotube (CNT) incorporation the masterbatch dilution step resulted in improved CNT macro dispersion. The use of the supplemental fillers CB or talc does not show a significant influence on the CNT dispersion state. When compared to direct CNT incorporation, the second compounding process involved in masterbatch dilution leads to higher electrical resistivity of injection molded samples. On the other hand, the supplemental fillers talc or CB decreased the electrical resistivity values. With the addition of talc or CB an increase of the Young’s modulus due to the reinforcing effect of the second filler was achieved. However, no synergistic effect between the used supplemental fillers and the CNT on the mechanical properties was obtained.
Looking for Traces of Non-minimally Coupled Dark Matter in the X-COP Galaxy Clusters Sample
Creators: name: Gandolfi, Giovanni
name: Haridasu, Balakrishna Sandeep
name: Liberati, Stefano
name: Lapi, Andrea
Publisher: name: arXiv
Year: 2023
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We look for possible evidence of a non-minimal coupling (NMC) between dark matter (DM) and gravity using data from the X-COP compilation of galaxy clusters. We consider a theoretically motivated NMC that may dynamically arise from the collective behavior of the coarse-grained DM field (e.g., via Bose-Einstein condensation) with averaging/coherence length $Ł_{\mathrm{nmc}}$. In the Newtonian limit, the NMC modifies the Poisson equation by a term $Ł_{\mathrm{nmc}}^2 \nabla^2 ρ$ proportional to the Laplacian of the DM density itself. We show that this term when acting as a perturbation over the standard Navarro-Frenk-White (NFW) profile of cold DM particles, can yield DM halo density profiles capable of correctly fitting galaxy clusters' pressure profiles with an accuracy comparable and in some cases even better than the standard cold DM NFW profile. We also show that the observed relation between the non-minimal coupling length scale and the virial mass found in Gandolfi et al., 2022 for Late Type Galaxies is consistent with the relation we find in the current work, suggesting that the previously determined power-law scaling law holds up to galaxy cluster mass scales.
description: 15 pages, 6 figures, accepted for publication in the Astrophysical Journal
Confronting the neutron star population with inverse cascades
Creators: name: Sarin, Nikhil
name: Brandenburg, Axel
name: Haskell, Brynmor
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The origin and evolution of magnetic fields of neutron stars from birth has long been a source of debate. Here, motivated by recent simulations of the Hall cascade with magnetic helicity, we invoke a model where the large-scale magnetic field of neutron stars grows as a product of small-scale turbulence through an inverse cascade. We apply this model to a simulated population of neutron stars at birth and show how this model can account for the evolution of such objects across the $P\dot{P}$ diagram, explaining both pulsar and magnetar observations. Under the assumption that small-scale turbulence is responsible for large-scale magnetic fields, we place a lower limit on the spherical harmonic degree of the energy-carrying magnetic eddies of $\approx 40$. Our results favor the presence of a highly resistive pasta layer at the base of the neutron star crust. We further discuss the implications of this paradigm on direct observables, such as the nominal age and braking index of pulsars.
description: Published in ApJL. 8 pages, 3 figures
Development of joining methods for highly filled Graphite/PP composite based bipolar plates for fuel cells: Adhesive joining and welding
Creators: name: Rzeczkowski, P.
name: Lucia, M.
name: Müller, A.
name: Facklam, M.
name: Cohnen, A.
name: Schäfer, P.
name: Hopmann, C.
name: Hickmann, T.
name: Pötschke, Petra
name: Krause, Beate
Publisher: name: Melville, NY : AIP
Year: 2019
Subjects: subject: Thermal conductivity
subject: Adhesive bonding
subject: Mechanical instruments
subject: Plasma processing
subject: Polymers
subject: Welding
subject: Carbon based materials
subject: Fuel cells
subject: Educational assessment
subject: Konferenzschrift
subject: 530

description: Novel material solutions for bipolar plates in fuel cells require adapted ways of joining and sealing technologies. Safe and life time enduring leak-tight contacts must be achieved by automatic processes using reasonable joint forces. A proper sealing should manage such challenges as good ageing properties, excellent leaktightness, high thermal conductivity and low gas permeability. Hence in this work, adhesive bonding and welding are considered as suitable methods, which can fulfill the requirements mentioned above. Adhesive systems seem to be more easy to apply than conventional sealing (hand layed-up rubber gaskets), e.g. with automatic dispensers. Additionally, the properties of an adhesive joint can be enhanced by a process-specific surface pre-treatment. This work focuses on the characterization of adhesive systems and their joints with highly filled graphite composites. Mechanical properties of the joints were characterized through lap-shear tests. The influence of ageing caused by humidity or acidic solvent at increased temperature on the bond line properties as well as neat adhesive was examined. The thermal conductivities of neat adhesives and through the entire joint were examined. In order to improve above conductivities, roughening, substrate pre-heating, post-curing and various contact pressure weights were applied. Plasma treatment was chosen as surface pre-treatment method for improving substrate's surface energy. An alternative to bonding is plastic welding, which does not require the use of sealants and adhesives. Based on former study of influences of filler content on the welding process using ultrasonic, hot plate or infrared welding, a welding method for joining the graphite compounds was derived.
(103151) Vernon Bernard Culverwell
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
On the effects of self- and cross-phase modulation on photon purity for four-wave mixing photon-pair sources
Creators: name: Bell, Bryn
name: McMillan, Alex
name: McCutcheon, Will
name: Rarity, John
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We consider the effect of self-phase modulation and cross-phase modulation on the joint spectral amplitude of photon pairs generated by spontaneous four-wave mixing. In particular, the purity of a heralded photon from a pair is considered, in the context of schemes that aim to maximise the purity and minimise correlation in the joint spectral amplitude using birefringent phase-matching and short pump pulses. We find that non-linear phase modulation effects will be detrimental, and will limit the quantum interference visibility that can be achieved at a given generation rate. An approximate expression for the joint spectral amplitude with phase modulation is found by considering the group velocity walk-off between each photon and the pump, but neglecting the group-velocity dispersion at each wavelength. The group-velocity dispersion can also be included with a numerical calculation, and it is shown that it only has a small effect on the purity for the realistic parameters considered.
description: 11 pages, 10 figures
Klinische Beobachtung zum Vergleich der Kraftvektoren zweier verschiedener Hüft-Beuge-Spreiz-Orthesen in der Behandlung der kongenitalen Hüftdysplasie bei Neugeborenen
Creators: name: Schwanitz von Keitz, Paul
Publisher: name: Universität Rostock
Year: 2018
Subjects: subject: 610 Medical sciences Medicine

description: Die kongenitale Hüftdysplasie ist die häufigste angeborene Skeletterkrankung in Deutschland. Die frühzeitige Identifikation einer Hüftdysplasie und die damit eher einsetzende Behandlung führt zu besseren Ergebnissen mit abnehmenden Komplikationsraten. Ist eine Hüftdysplasie diagnostiziert, so kommt in der konservativen Therapie eine Hüft-Beuge-Spreiz-Orthese zum Einsatz. Mit unterschiedlichem Design haben alle Orthesen eines gemein: sie „beugen und spreizen“ im Hüftgelenk. Diese Arbeit betrachtet die biomechanisch auftretenden axialen Belastungen auf den wachsenden Körper zweier Orthesentypen.
null Übergang vom Kindergarten zur Schule in der DDR im Spiegel der Pädagogischen Lesungen
The transition from kindergarten to school in the GDR as reflected in Pedagogical Readings
Creators: name: Koch, Katja
name: Koebe, Kristina
Publisher: name: Universität Rostock, Arbeitsstelle Pädagogische Lesungen
Year: 2022
Subjects: subject: 370 Education
subject: 943 General history of Europe Central Europe Germany

description: Dass dem Transitionsprozess von vorschulischen Institutionen in die Schule eine immense Bedeutung zugemessen werden muss, ist international unumstritten. Nicht ganz so einig ist man sich darüber, wie genau dieser Übergang gestaltet werden sollte und in welchem Maße Kindertagesstätten als schulvorbereitende Einrichtungen definiert werden. Der folgende Beitrag fokussiert die stark kontrastierende Entwicklung in der DDR. Anhand eines Konvoluts von 22 Erfahrungsberichten (Pädagogischen Lesungen) aus den Jahren 1963 bis 1988 wird dargestellt, welche Gelingensbedingungen für den Transitionsprozess bereits vor Jahrzehnten in der Praxis der DDR-Kindergartenpädagogik identifiziert und gezielt mit pädagogischem Handeln unterlegt wurden.
Hvordan man 'ligger sig til hovedrollen' på fransk efter først at have 'væltet kaffen': To anvendelser af Per Durst-Andersens teori om aspekt og sprogtypologi til forklaring af centrale aspekter ved dansk og fransk
Creators: name: Korzen, Hanne
Publisher: name: Globe: A Journal of Language, Culture and Communication
Year: 2016

description: The article treats two fundamental aspects of French and Danish that can be explained by Per Durst-Andersen’s theory: 1) Restrictions on the use of the free adjunct to the object. 2) The expression of concrete and abstract movement and position in Danish and French. The first construction type behaves in the same way in the two languages, probably due to the human cognitive apparatus. Durst-Andersen’s theory permits to explain an important aspect of that problem that could not be explained by the “classical” theory of “aktionsart”. As for the second construction type, Danish and French behave very differently, a typological difference that is due to the different lexical structures of the two languages. The last part of the article contains different strategies that can be used in the translation of these constructions from Danish to French, and it appears that the same strategy can be used when translating something abstract and something concrete.
description: Globe: A Journal of Language, Culture and Communication, Særnummer: Global kommunikation i lokalt perspektiv: Når vi ikke taler samme sprog - Festskrift i anledning af Per Durst-Andersens 60 års fødselsdag
Characterization of Antiestrogenic Activity of the Chinese Herb, Prunella vulgaris, Using In Vitro and In Vivo (Mouse Xenograft) Models1
Creators: name: Yu, Xianzhong
name: Houwing, Angela M.
name: Lessey, Bruce A.
name: McDonnell, Donald P.
name: Dusell, Carolyn D.
name: Collins, Nancy H.
name: Fowler, Lindsay
name: Palomino, Wilder A.
name: Lessey, Elizabeth C.
name: Illera, Maria J.
name: Mo, Bilan
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2009

description: Prunella vulgaris (PV), a commonly used Chinese herb, also known as Self-heal, has a wide range of reported medicinal activities. By screening multiple herbs using the endometrial cancer cell line, ECC-1, and an alkaline phosphatase detection assay, we found that PV displayed significant antiestrogenic activity. We investigated the possible usefulness of antiestrogenic activity using both in vitro and in vivo models of endometrial function. Using the well-differentiated, hormone-responsive endometrial cell line, ECC-1, PV extract, at concentrations that were not toxic to the cells, significantly reduced alkaline phosphatase activity and cell proliferation in response to estrogen in a dose-dependent manner. The expression of CYR61, an estrogen-induced protein, was blocked in ECC-1 cells by both the antiestrogen ICI 182 780 and PV extract. Interestingly, PV extract did not appear to directly inhibit estrogen signaling. Rather, we found that its activities were probably related to an ability to function as an aryl hydrocarbon receptor (AHR) agonist in ECC-1 cells. In support of this hypothesis, we noted that PV induced CYP1A1, CYP1B1, and AHR repressor expression in a dose-dependent manner—responses that were blocked by small interfering RNA treatment to reduce AHR and specific AHR antagonists. Ovariectomized immunodeficient RAG-2/gamma(c) knockout mice implanted with human endometrial xenografts developed implants only when treated with estrogen. Mice treated with estrogen and PV tea in their drinking water had fewer and smaller xenograft implants compared with their estrogen-treated counterparts that drank only water (P < 0.05). Analysis of the resulting implants by immunohistochemistry demonstrated persistent estrogen receptor (ER), but reduced proliferation and CYR61 expression. Mouse uterine tissue weight in PV-treated mice was not different from controls, and cycle fecundity of intact C57 female mice was unaffected by PV tea treatment. PV, or Self-heal, exhibits significant antiestrogenic properties, both in vitro and in vivo. This activity is likely due to the ability of PV-activated AHR to interfere with estrogen. This herb may be useful as an adjunct for the treatment of estrogen-dependent processes like endometriosis and breast and uterine cancers. Full characterization of this herb will likely provide new insights into the crosstalk between AHR and ESR1, with potential for therapeutic applications in women.
(103148) Emily Marion Watkins
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Inhibition of Human Sperm Motility by Contraceptive Anti-Eppin Antibodies from Infertile Male Monkeys: Effect on Cyclic Adenosine Monophosphate1
Creators: name: Beyler, Stan
name: Widgren, Esther E.
name: Richardson, Richard T.
name: O'Rand, Michael G.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2009

description: Epididymal protease inhibitor (eppin [official symbol, SPINLW1]) is of interest as a male contraceptive target because of its specificity and location on the human sperm surface. We have examined the effect of anti-eppin antibodies from infertile male monkeys and the effect of recombinant human semenogelin on human sperm motility. Anti-eppin antibodies significantly decreased the progressive motility of human spermatozoa as measured by decreased total distance traveled, decreased straight-line distance, and decreased velocity. Anti-eppin treatment of spermatozoa significantly increased the amount of cAMP present in nonprogressive spermatozoa; however, approximately 25% of antibody-treated spermatozoa could be rescued by the addition of cAMP-acetoxymethyl ester, indicating that anti-eppin-treated spermatozoa have a compromised ability to utilize cAMP. Addition of recombinant human semenogelin has a concentration-dependent inhibitory effect on progressive motility (increased tortuosity and decreased velocity). We tested the hypothesis that anti-eppin antibodies bound to eppin would subsequently block semenogelin binding to eppin. Anti-eppin antibodies from infertile monkeys inhibited eppin from binding to semenogelin. Addition of affinity-purified antibodies made to the dominant C-terminal epitope of eppin had an inhibitory effect on progressive motility (increased tortuosity, decreased velocity, and straight distance). Our results suggest that the eppin-semenogelin binding site is critical for the removal of semenogelin in vivo during semen liquefaction and for the initiation of progressive motility. We conclude that the eppin-semenogelin binding site on the surface of human spermatozoa is an ideal target for a nonsteroidal male contraceptive.
Exploration of multiphoton entangled states by using weak nonlinearities
Creators: name: He, Yingqiu
name: Ding, Dong
name: Yan, Fengli
name: Gao, Ting
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a fruitful scheme for exploring multiphoton entangled states based on linear optics and weak nonlinearities. Compared with the previous schemes the present method is more feasible because there are only small phase shifts instead of a series of related functions of photon numbers in the process of interaction with Kerr nonlinearities. In the absence of decoherence we analyze the error probabilities induced by homodyne measurement and show that the maximal error probability can be made small enough even when the number of photons is large. This implies that the present scheme is quite tractable and it is possible to produce entangled states involving a large number of photons.
description: 5 pages, 1 figure
Factores de riesgo para la disfunción sexual en mujeres de latinoamerica durante la última década: una revisión sistemática
Creators: name: Marín, Javiera
name: Sanchez, Keren
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 321502
subject: Obstetrics and gynaecology
classificationCode: 321503
subject: Reproduction
subject: FOS: Medical biotechnology
classificationCode: 420319
subject: Primary health care
classificationCode: 420603
subject: Health promotion
classificationCode: 440506
subject: Sexualities
classificationCode: 440509
subject: Women's studies (incl. girls' studies)

description: La sexualidad humana es una parte integral de la vida, influenciada por factores orgánicos, psicológicos, espirituales y socioculturales. La respuesta sexual humana involucra la coordinación de los sistemas reproductivo, vascular, endocrino y nervioso, culminando en una experiencia sexual positiva y placentera cuando todos funcionan correctamente. La disfunción sexual femenina (DSF) es un problema complejo que incluye dificultades como la pérdida de deseo y problemas para alcanzar el orgasmo, afectando significativamente la calidad de vida y las relaciones personales de las mujeres. Según la OMS, la DSF es la incapacidad de participar en relaciones sexuales según se desea, y abarca trastornos relacionados con el deseo, la excitación, el orgasmo y el dolor durante el sexo. Aunque prevalente, la DSF recibe menos atención y recursos que la disfunción sexual masculina, debido a la falta de información y antecedentes. Este tema ha generado un creciente interés debido a su impacto en la salud y el bienestar emocional de las mujeres, subrayando la necesidad de una revisión sistemática para identificar los factores de riesgo y mejorar la intervención, educación y prevención en este campo, con el fin de mejorar la calidad de vida de las mujeres afectadas.
VOLUM OMAGIAL  ISTORIC ȘI PERSPECTIVE ÎN ANUL  JUBILEULUI SCDL BACĂU  1974 – 2024
Creators: name: Brezeanu, Creola
Publisher: name: Zenodo
Year: 2025

description: The volume captures the activity carried out in 50 years of a research unit in the vegetable field in Romania. The captured aspects refer to

- The context of the transformations and events in Romanian society in the last fifty years

 - The composition of the SCDL Bacău team in fifty years of activity

- Our tribute to those who have passed away

- The mission of the unit. Specific directions and actions. Specific infrastructure

- Representative activities and projects (selective presentation)

- Recognition at national and international level

- The unit in the jubilee year. Analysis of the functionality and performance of the unit, activities, team, perspectives

- THE UNIT'S BUSINESS CARD

- WORDS, IMPRESSIONS, EXPERIENCES, MEMORIES of the team members from different periods.
Improvement of electrical resistivity of highly filled graphite/pp composite based bipolar plates for fuel cells by addition of carbon black
Creators: name: Krause, Beate
name: Pötschke, Petra
name: Hickmann, Thorsten
Publisher: name: Melville, NY : AIP
Year: 2019
Subjects: subject: Thermal conductivity
subject: Electrical resistivity
subject: Materials forming
subject: Polymers
subject: Carbon based materials
subject: Chemical elements
subject: Fuel cells
subject: Konferenzschrift
subject: 530

description: Novel material solutions for polymer based bipolar plates in fuel cells require adapted ways to develop suitable material compositions. The common pathway to develop materials with at the same time high electrical as well as thermal conductivity is the use of conductive graphite as filler with contents up to 80-85 wt.%. However, there is a need to develop recipes with maximized conductive behavior at lowest possible content of conductive filler to enhance the mechanical properties and allow good processability. In this study, composites based on polypropylene (PP) and different filler systems were melt-mixed using a lab scale co-rotating twin-screw extruder and compression molded to bipolar type plates. As fillers synthetic (G) or expanded (EG) graphites were incorporated. At the overall filler content of 60 wt.% or 80 wt% part of the graphite was replaced by highly conductive carbon black (CB, 2.5 wt.%, 5.0 wt.%). It was found that the addition of CB significantly reduced the electrical volume as well as the surface resistivity up to values of 0.12 Ωcm or 4 mΩ/square, respectively. For the values of thermal conductivity the kind and particle size of the selected graphite was important. If expanded graphite was partially replaced by CB, the thermal conductivity of PP/EG+CB composites decreased significantly. Otherwise, the combination of synthetic graphite and CB changed the thermal conductivity of PP composites only marginal at the same overall filler content. For both graphite types the filler with larger particle size resulted in higher thermal conductivity.
(103147) William Mulleny
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Åbninger og lukninger i e-mailkorrespondance på fire sprog
Creators: name: Jensen, Eva Skafte
name: Kragh, Kirsten Jeppesen
name: Strudsholm, Erling
Publisher: name: Globe: A Journal of Language, Culture and Communication
Year: 2016

description: This paper describes different strategies of politeness in e-mail communication between students and teachers and between colleagues in Academia. The data are found in e-mails in the following languages: Danish, Swedish, French, and Italian. The aim of the study is to give insights into differences and similarities across languages and cultures. The analyses are anchored in pragmatically oriented research in politeness as well as the diasystematic dimensions, as proposed by Eugenio Coseriu, and inspired by the theory of linguistic supertypes as proposed by Per Durst-Andersen.
description: Globe: A Journal of Language, Culture and Communication, Særnummer: Global kommunikation i lokalt perspektiv: Når vi ikke taler samme sprog - Festskrift i anledning af Per Durst-Andersens 60 års fødselsdag
(103146) Gladys Evelyn May Mulleny
Creators: name: Professions, Victorian
Publisher: name: University of Oxford
Year: 2022
Subjects: subject: 220201 Business and Labour History
subject: FOS: Philosophy, ethics and religion
subject: History
subject: 140203 Economic History
subject: FOS: Economics and business

description: This three-year research project began in January 2014 and investigated whether, during the Victorian period, the professions formed a distinct self-sustaining social group with its own mores and values. The project looked at 16,000 individuals drawn from census data for Alnwick, Brighton, Bristol, Dundee, Greenock, Leeds, Merthyr Tydfil, Morpeth, and Winchester. The research project was funded by the UK Economic & Social Research Council and was based at the Universities of Oxford and Northumbria.
Discursive legitimation in online crowdfunding: A study of Kickstarter projects promoting human rights
Creators: name: Kedves, Ana
Publisher: name: Globe: A Journal of Language, Culture and Communication
Year: 2016

description: The internet-based crowdfunding platforms have in many ways changed the way projects are nowadays funded. Apart from opening to the small businesses, it has created funding opportunities for non-governmental organisations, citizens’ initiatives, non-formal groups and individual projects, which used to have rather limited access to this sort of resources. However, the widening and liberalisation of the market poses new challenges for these entities as well – the project ideas have to be effectively elaborated in order to stand out from the crowd, reach the potential supporters and persuade them to get engaged with the project. This paper explored the discursive practices in crowdfunding for human rights projects, with particular focus on discursive strategies employed in project descriptions on the crowdfunding platforms Kickstarter. Within the discourse analysis framework, the study addressed the various strategies employed in the legitimation of social action (Van Leeuwen 2008), in this case, donating money or otherwise supporting the projects. The findings suggest that rationalisation and appealing to morality are most frequently used to legitimise the social action of crowdfunding on online platforms. The research into discourse of crowdfunding highlights the current tendencies employed for engaging the potential contributors, but also reveals how the crowdfunding and human rights activism are socially constructed on online platforms like Kickstarter.
description: Globe: A Journal of Language, Culture and Communication, Vol 3 (2016)
Linker Histones Stimulate HSPA2 ATPase Activity Through NASP Binding and Inhibit CDC2/Cyclin B1 Complex Formation During Meiosis in the Mouse1
Creators: name: Alekseev, Oleg M.
name: Richardson, Richard T.
name: O'Rand, Michael G.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2009

description: In mammalian spermatocytes, cell division cycle protein 2 (CDC2)/cyclin B1 and the chaperone heat shock protein A2 (HSPA2) are required for the G2→M transition in prophase I. Here, we demonstrate that in primary spermatocytes, linker histone chaperone testis/embryo form of nuclear autoantigenic sperm protein (tNASP) binds the heat shock protein HSPA2, which localizes on the synaptonemal complex of spermatocytes. Significantly, the tNASP-HSPA2 complex binds linker histones and CDC2, forming a larger complex. We demonstrate that increasing amounts of tNASP favor tNASP-HSPA2-CDC2 complex formation. Binding of linker histones to tNASP significantly increases HSPA2 ATPase activity and the capacity of tNASP to bind HSPA2 and CDC2, precluding CDC2/cyclin B1 complex formation and, consequently, decreasing CDC2/cyclin B1 kinase activity. Linker histone binding to NASP controls the ability of HSPA2 to activate CDC2 for CDC2/cyclin B1 complex formation; therefore, tNASP's role is to provide the functional link between linker histones and cell cycle progression during meiosis.