cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Identification of subpopulations in mesenchymal stem cell-like cultures from human umbilical cord
Creators: name: Majore, Ingrida
name: Moretti, Pierre
name: Hass, Ralf
name: Kasper, Cornelia
Publisher: name: London : BioMed Central Ltd.
Year: 2009
Subjects: subject: Counterflow Centrifugal Elutriation
subject: CCE
subject: mesenchymal stem cells
subject: MSC
subject: Dewey Decimal Classification::500 | Naturwissenschaften
subject: Dewey Decimal Classification::500 | Naturwissenschaften::570 | Biowissenschaften, Biologie

description: Background: A variety of cell types can be identified in the adherent fraction of bone marrow mononuclear cells including more primitive and embryonic-like stem cells, mesenchymal stem cells (MSC), lineage-committed progenitors as well as mature cells such as osteoblasts and fibroblasts. Different methods are described for the isolation of single bone marrow stem cell subpopulations - beginning from ordinary size sieving, long term cultivation under specific conditions to FACS-based approaches. Besides bone marrow-derived subpopulations, also other tissues including human umbilical cord (UC) have been recently suggested to provide a potential source for MSC. Although of clinical importance, these UC-derived MSC populations remain to be characterized. It was thus the aim of the present study to identify possible subpopulations in cultures of MSC-like cells obtained from UC. We used counterflow centrifugal elutriation (CCE) as a novel strategy to successfully address this question. Results: UC-derived primary cells were separated by CCE and revealed differentially-sized populations in the fractions. Thus, a subpopulation with an average diameter of about 11 μm and a small flat cell body was compared to a large sized subpopulation of about 19 μm average diameter. Flow cytometric analysis revealed the expression of certain MSC stem cell markers including CD44, CD73, CD90 and CD105, respectively, although these markers were expressed at higher levels in the small-sized population. Moreover, this small-sized subpopulation exhibited a higher proliferative capacity as compared to the total UC-derived primary cultures and the large-sized cells and demonstrated a reduced amount of aging cells. Conclusion: Using the CCE technique, we were the first to demonstrate a subpopulation of small-sized UC-derived primary cells carrying MSC-like characteristics according to the presence of various mesenchymal stem cell markers. This is also supported by the high proliferative capacity of these MSC-like cells as compared to whole primary culture or other UC-derived subpopulations. The accumulation of a self-renewing MSC-like subpopulation by CCE with low expression levels of the aging marker senescence-associated β-galactosidase provides a valuable tool in the regenerative medicine and an alternative to bone-marrow-derived MSC.
Synthesis of 4-Azaindole-Thiazolidine-2,4-Dione Coupled 1,2,3-Triazoles as EGFR Directing Anticancer Agents
Creators: name: Reddy, T. Shreedhar
name: Rai, Sanjay
name: Koppula, Shiva Kumar
Publisher: name: Taylor & Francis
Year: 2024
Subjects: Biochemistry
Physical Sciences not elsewhere classified
Pharmacology
Biotechnology
Chemical Sciences not elsewhere classified
Biological Sciences not elsewhere classified
Cancer

description: Herein, we synthesized some new 4-azaindole-thiazolidine-2,4-dione-1,2,3-triazole hybrids (6a-6n) via Knoevenagel condensation and copper(I) catalyzed azide-alkyne cycloaddition (CuAAC) as key approaches. These hybrids were then screened for their in vitro anticancer activity against three human cancer cell lines like MCF-7 (breast), A549 (lung) and HepG2 (hepatocellular) using erlotinib as standard drug. Out of all, compounds 6a, 6k and 6m were found to be more active against all cell lines with IC50 values <18 µM. As well, compounds 6a (IC50 = 0.40 µΜ), 6k (IC50 = 0.29 µΜ) and 6m (IC50 = 0.18 µΜ) showed higher potency ininhibiting tyrosine kinase EGFR than the erlotinib (IC50 = 0.41 µΜ). Further, molecular dockingof compounds 6a, 6k and 6 m on EGFR protein revealed that they have good binding energies with the target protein (−9.96 kcal/mol, −9.92 kcal/mol and −10.37 kcal/mol respectively) which were found to be supportive with the corresponding in vitro activities data.
Exploring transitional justice in educational research
Creators: name: Paulson, Julia
name: Espinal, Silvia
name: Karki, Mrigendra
name: Komakech, Daniel
name: Kurawa, Gwadabe
name: Ranabhat, Srijana
name: JustEd
Publisher: name: JustEd
Year: 2021
Subjects: education
transitional justice

description: This paper provides an overview of the development of transitional justice as a field of practice and area of scholarly research before exploring the relationships between education and transitional justice. It has been drafted by members of the JustED team to provide background into one of the types of justice – transitional justice – that the project focuses on.

In developing this overview, the paper outlines key elements of the approach that the JustED will take to understanding and engaging with transitional justice, including by arguing for a focus on transformative, reparative transitional justice that includes material, symbolic and pedagogical actions to redress the wrongs of the past, including those linked to colonial, imperial and capitalist oppression and extraction.

The second half of the paper introduces the historical and contemporary context for transitional justice in the focus countries of JustEd – Nepal, Uganda and Peru. We show how the transitional justice has developed in each country, to differing degrees, and suggest some of the ways that JustED will particularly focus attention on aspects of transitional justice in education and from young people’s perspectives.
Discriminative extended canonical correlation analysis for pattern set matching
Creators: name: Arandjelovic, Ognjen
Publisher: name: arXiv
Year: 2013
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: In this paper we address the problem of matching sets of vectors embedded in the same input space. We propose an approach which is motivated by canonical correlation analysis (CCA), a statistical technique which has proven successful in a wide variety of pattern recognition problems. Like CCA when applied to the matching of sets, our extended canonical correlation analysis (E-CCA) aims to extract the most similar modes of variability within two sets. Our first major contribution is the formulation of a principled framework for robust inference of such modes from data in the presence of uncertainty associated with noise and sampling randomness. E-CCA retains the efficiency and closed form computability of CCA, but unlike it, does not possess free parameters which cannot be inferred directly from data (inherent data dimensionality, and the number of canonical correlations used for set similarity computation). Our second major contribution is to show that in contrast to CCA, E-CCA is readily adapted to match sets in a discriminative learning scheme which we call discriminative extended canonical correlation analysis (DE-CCA). Theoretical contributions of this paper are followed by an empirical evaluation of its premises on the task of face recognition from sets of rasterized appearance images. The results demonstrate that our approach, E-CCA, already outperforms both CCA and its quasi-discriminative counterpart constrained CCA (C-CCA), for all values of their free parameters. An even greater improvement is achieved with the discriminative variant, DE-CCA.
description: Machine Learning, 2013
Laser ablation-based one-step generation and bio-functionalization of gold nanoparticles conjugated with aptamers
Creators: name: Walter, Johanna-Gabriela
name: Petersen, Svea
name: Stahl, Frank
name: Scheper, Thomas
name: Barcikowski, Stephan
Publisher: name: London : Biomed Central Ltd.
Year: 2010
Subjects: subject: PSMA
subject: AuNP
subject: DNA
subject: RNA
subject: Dewey Decimal Classification::500 | Naturwissenschaften

description: Background: Bio-conjugated nanoparticles are important analytical tools with emerging biological and medical applications. In this context, in situ conjugation of nanoparticles with biomolecules via laser ablation in an aqueous media is a highly promising one-step method for the production of functional nanoparticles resulting in highly efficient conjugation. Increased yields are required, particularly considering the conjugation of cost-intensive biomolecules like RNA aptamers. Results: Using a DNA aptamer directed against streptavidin, in situ conjugation results in nanoparticles with diameters of approximately 9 nm exhibiting a high aptamer surface density (98 aptamers per nanoparticle) and a maximal conjugation efficiency of 40.3%. We have demonstrated the functionality of the aptamer-conjugated nanoparticles using three independent analytical methods, including an agglomeration-based colorimetric assay, and solid-phase assays proving high aptamer activity. To demonstrate the general applicability of the in situ conjugation of gold nanoparticles with aptamers, we have transferred the method to an RNA aptamer directed against prostate-specific membrane antigen (PSMA). Successful detection of PSMA in human prostate cancer tissue was achieved utilizing tissue microarrays. Conclusions: In comparison to the conventional generation of bio-conjugated gold nanoparticles using chemical synthesis and subsequent bio-functionalization, the laser-ablation-based in situ conjugation is a rapid, one-step production method. Due to high conjugation efficiency and productivity, in situ conjugation can be easily used for high throughput generation of gold nanoparticles conjugated with valuable biomolecules like aptamers.
ESiWACE3 Deliverable 1.5: Report on the containerisation of EC-Earth 4
Creators: name: Fladrich, Uwe
Publisher: name: Zenodo
Year: 2024
Subjects: ESiWACE3

description: Containerisation is a virtualisation technology that allows to abstract the dependencies of complex software packages, such as Earth system models, and makes it much easier to port software to new machines and provide a reproducible installation environment. The objective of this deliverable is to design, develop, and test a containerised version of EC-Earth 4, thus allowing a proto-type deployment of a simple climate model simulation workflow in a testing environment.

Based on a review of current containerisation technology, the Apptainer software has been selected for the containerisation of EC-Earth 4 because it is well adapted to HPC systems, easy to use and well documented and supported. The container design process addresses important technical aspects, such as the scope of containerisation, selection of the base operating system and other components, details of the container build system, performance considerations for HPC systems, and the workflow adaptation for experiments with the containerised model. The proposed container design answers and documents most of these issues, providing a prototype solution for EC-Earth 4 as well as a general approach and recommendations for other Earth system models.

The finalised container is tested in a coupled atmosphere-ocean-sea-ice configuration with production output, running ten-year experiments with automatic restarts on the test system. Performance issues are discussed with regard to the target EuroHPC pre-exascale systems. A detailed example for deployment of the containerised version is documented.
Exploring transitional justice in educational research
Creators: name: Paulson, Julia
name: Espinal, Silvia Meza
name: Karki, Mrigendra
name: Kurawa, Gwadabe
name: Ranabhat, Srijana
Publisher: name: Zenodo
Year: 2021
Subjects: education
transitional justice

description: This paper provides an overview of the development of transitional justice as a field of practice and area of scholarly research before exploring the relationships between education and transitional justice. It has been drafted by members of the JustED team to provide background into one of the types of justice – transitional justice – that the project focuses on. In developing this overview, the paper outlines key elements of the approach that the JustED will take to understanding and engaging with transitional justice, including by arguing for a focus on transformative, reparative transitional justice that includes material, symbolic and pedagogical actions to redress the wrongs of the past, including those linked to colonial, imperial and capitalist oppression and extraction. The second half of the paper introduces the historical and contemporary context for transitional justice in the focus countries of JustEd – Nepal, Uganda and Peru. We show how the transitional justice has developed in each country, to differing degrees, and suggest some of the ways that JustED will particularly focus attention on aspects of transitional justice in education and from young people’s perspectives.
Improvement and development of one- and two-dimensional discrete gust models using a large-eddy simulation model
Creators: name: Knigge, Christoph
name: Raasch, Siegfried
Publisher: name: Amsterdam : Elsevier
Year: 2016
Subjects: subject: Aircraft
subject: Atmospheric boundary layer
subject: Gust loads
subject: Large-eddy simulation
subject: Mean gust shape
subject: Strong-wind event
subject: Wind turbines
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: High resolution large-eddy simulations (LES) were carried out to simulate the turbulent flow of the atmospheric boundary layer during an idealized strong-wind event in order to verify discrete gust models like the one-minus-cosine law which are used in the design process of aircraft and wind turbines. Furthermore existing gust models will be improved and new analytical approaches will be developed to approximate gusts more accurately. Mean gust shapes of the three wind speed components are calculated by means of virtual measurements of the turbulent wind speed at different heights above ground to analyze both the one- and two-dimensional characteristics of discrete gusts. One-dimensional results of the mean gust shapes show significant differences compared to the classical one-cosine gust model like a steeper increase and decrease as well as a rather constant middle part. Results obtained from previous mast measurements, however, show the same main gust characteristics as the present LES gusts. Two-dimensional mean gust shapes have not been calculated from field measurements yet. The results obtained from the LES data show elliptically shaped contours with different aspect ratios for different gust diameters and heights above ground. For both, one- and two-dimensional mean gust shapes, mathematical approximations are presented as alternative approach to the classical gust models in order to be able to reproduce the mean gust shapes for future applications. © 2016 The Authors.
An X-ray study of the galactic-scale starburst-driven outflow in NGC 253
Creators: name: Mitsuishi, Ikuyuki
name: Yamasaki, Noriko Y.
name: Takei, Yoh
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: X-ray properties of hot interstellar gas in a starburst galaxy NGC 253 were investigated to gain a further understanding of starburst-driven outflow activity by XMM-Newton and Suzaku. Spectroscopic analysis for three regions of the galaxy characterized by multiwavelength observations was conducted. The hot gas was represented by two thin thermal plasmas with temperatures of kT ~0.2 and ~0.6 keV. Abundance ratios i.e., O/Fe, Ne/Fe, Mg/Fe and Si/Fe, are consistent between three regions, which suggests the common origin of the hot gas. The abundance patterns are consistent with those of type II supernova ejecta, indicating that the starburst activity in the central region provides metals toward the halo through a galactic-scale starburst-driven outflow. The energetics also can support this indication on condition that 0.01-50 η^0.5 % of the total emission in the nuclear region has flowed to the halo region. To constrain the dynamics of hot interstellar gas, surface brightness and hardness ratio profiles which trace the density and temperature were extracted. Assuming a simple polytropic equation of state of gas, Tρ^(1-γ) = const, we constrained the physical condition. γ is consistent with 5/3 at the hot disk and T is constant (γ = 1) in the halo. It is suggested that the hot gas expands adiabatically from the central region towards the halo region while it moves as free expansion from the inner part of the halo towards the outer part of the halo as the outflow. We constrained the outflow velocity to be >100 km s^-1 from the observed temperature gradient in the halo. In comparison with the escape velocity of ~220 km s^-1 for NGC 253, it is indicated that the hot interstellar gas can escape from the gravitational potential of NGC 253 by combining the outflow velocity and the thermal velocity.
description: 10 figures, accepted by PASJ
Scanning Gate Spectroscopy of transport across a Quantum Hall Nano-Island
Creators: name: Martins, F.
name: Faniel, S.
name: Rosenow, B.
name: Pala, M. G.
name: Sellier, H.
name: Huant, S.
name: Desplanque, L.
name: Wallart, X.
name: Bayot, V.
name: Hackens, B.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: 73.43.Jn, 73.43.-f, 73.23.Hk

description: We explore transport across an ultra-small Quantum Hall Island (QHI) formed by closed quan- tum Hall edge states and connected to propagating edge channels through tunnel barriers. Scanning gate microscopy and scanning gate spectroscopy are used to first localize and then study a single QHI near a quantum point contact. The presence of Coulomb diamonds in the spectroscopy con- firms that Coulomb blockade governs transport across the QHI. Varying the microscope tip bias as well as current bias across the device, we uncover the QHI discrete energy spectrum arising from electronic confinement and we extract estimates of the gradient of the confining potential and of the edge state velocity.
description: 13 pages, 3 figures
The Hierarchical Nature of the Spin Alignment of Dark Matter Haloes in Filaments
Creators: name: Aragon-Calvo, Miguel A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Dark matter haloes in cosmological filaments and walls have their spin vector aligned (in average) with their host structure. While haloes in walls are aligned with the plane of the wall independently of their mass, haloes in filaments present a mass dependent two-regime orientation. Here we show that the transition mass determining the change in the alignment regime (from parallel to perpendicular) depends on the hierarchical level in which the halo is located, reflecting the hierarchical nature of the Cosmic Web. By explicitly exposing this hierarchy we are able to identify the contributions of different components of the filament network to the spin alignment signal. We discuss a unifying picture to describe the alignment of haloes in filaments and walls consistent with previous results and our findings based on a two-phase angular momentum acquisition, first via tidal torquening and later via anisotropic mass accretion. The hierarchical identification and characterization of cosmic structures was done with a new implementation of the Multiscale Morphology Filter. The MMF-2 (introduced here) represents a significant improvement over its predecessor in terms of robustness and by explicitly describing the hierarchical relations between the elements of the Cosmic Web.
description: 6 pages, 3 figures
Country profile: Peru
Creators: name: Balarin, María
name: Monge, Carlos
name: Sarmiento, Paola
name: JustEd
Publisher: name: JustEd
Year: 2021
Subjects: education
Sustainable Development Goals
social justice

description: JustEd is an international comparative mixed methods study that explores the lived experiences of secondary school learners of environmental, epistemic and transitional justice. We produce insight into how learner experiences translate into actions to advance Sustainable Development Goals 13 (Climate Action) and 16 (Peace, Justice and Strong Institutions).
Thermal storage tanks in high efficiency heat pump systems - Optimized installation and operation parameters
Creators: name: Glembin, Jens
name: Büttner, Christoph
name: Steinweg, Jan
name: Rockendorf, Gunter
Publisher: name: London : Elsevier Ltd.
Year: 2015
Subjects: subject: heat pump
subject: solar active house
subject: storage tank
subject: system simulation
subject: TRNSYS
subject: Buffer storage
subject: Energy management
subject: Energy storage
subject: Heat pump systems
subject: Heat storage
subject: Pumps
subject: Solar energy
subject: Space heating
subject: Tanks (containers)
subject: Domestic hot water
subject: Heat pumps
subject: Heating circuits
subject: High efficiency heat pump
subject: Operation parameters
subject: Storage tank
subject: System simulations
subject: Heating
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: Heat pumps have a significant and increasing share in the European heating market. In most applications heat pumps are operated with a storage tank, either for domestic hot water or for the space heating circuit. The design of the storage and its connection to the heat pump has a significant influence on the performance of the heat pump and the whole system. Within a comprehensive investigation, system simulations in TRNSYS are used to identify the optimum design of two typical systems with a heat pump connected to a buffer storage including total storage volume, number and size of heated zones, sensor and in- and outlet positions. As result, a sharp decrease in the energy demand can be reached if the storage is equipped with two heat zones instead of one. This can be explained by the decreased set temperature in the additional heat zone for space heating leading to a higher performance of the heat pump. Other measures with a positive effect on the energy demand are a large space heating volume, the number and place of sensors, low set temperatures and the sensor position in the upper part of the heating zone. The investigation gives important recommendations how to connect a heat pump with a storage tank and may be considered as design rules for all heating systems consisting of heat pump and different types of storage tanks.
A New Monotone Quantity along the Inverse Mean Curvature Flow in $\mathbb R^n$
Creators: name: Kwong, Kwok-Kun
name: Miao, Pengzi
Publisher: name: arXiv
Year: 2012
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics

description: We find a new monotone increasing quantity along smooth solutions to the inverse mean curvature flow in $\mathbb R^n$. As an application, we derive a sharp geometric inequality for mean convex, star-shaped hypersurfaces which relates the volume enclosed by a hypersurface to a weighted total mean curvature of the hypersurface.
description: 8 pages
Carex crispa
Creators: name: Becherer
Publisher: name: Zenodo
Year: 1956
Subjects: Biodiversity
Taxonomy

description: C. crispa (L.) R.Br. ex Hooker (Allosorus crispus Rohling) Cat. 414. Bis 2800m; abwärtsbis 630m. Arpille (Closuit). - 3: ne (F.); bei l: Gorge du Trient, 630 m (Coquoz); La Creuse (idem); Boyi Fionnay (Miller, Pugsley, Zwicky); Alpe de Torrent (Beauverd); Alpen von St-Luc^(Gams); Zinal(Roch);Täsch-Zermatt (Kneucker); GornergratbeiZermatt,bis2800m (Höhn1919);Nanztal (Beauverd). -3a:Furgge-Tschuggmatthorn (Becherer, Binz und Kilcher); Zwischbergental, sehr verbreitet (Chenevard, Briquet, Marret, Becherer), abwärts bis 1290 m (ob Belleggen: Becherer). - 4:~Binn, vielfach (Binz, Becherer); Münstigertal (Kilcher); Nufenen (Wilczek). Var. pectinata (Christ) - l: Cocorier-Jorat (F.);ob Salvan(Coquoz).- 3:Ob St-Luc(Garns).
description: Published as part of Becherer, 1956, Florae Vallesiacae Supplementum, pp. 1-556 in Denkschriften der Schweizerischen Naturforschenden Gesellschaft 71 on pages 1-556
Pipe internal recirculation in storage connections - An unseen efficiency barrier
Creators: name: Steinweg, Jan
name: Kliem, Francis
name: Littwin, Matthias
name: Rockendorf, Gunter
Publisher: name: London : Elsevier Ltd.
Year: 2015
Subjects: subject: heat losses
subject: pipe connection
subject: pipe internal recirculation
subject: Thermal storage
subject: Energy storage
subject: Heat losses
subject: Heat storage
subject: Plastic pipe
subject: Stainless steel
subject: Domestic hot water
subject: Dynamic system simulation
subject: External heat exchangers
subject: Internal recirculations
subject: Storage tank
subject: Storage (materials)
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: Basically, pipe internal recirculation (PIR) at storage connections is a known phenomenon. However, it is not sufficiently considered by storage manufacturers and installers. There is still a lack of awareness and quantification of the PIR effect in typical installations and practice-oriented solutions. Within this paper, the final results of a research project aiming at the detailed qualitative description and quantification of the effect including extrapolation of the results regarding the PIR impact on storage heat losses are presented. This includes the results regarding the influence of the pipe's material (copper, stainless steel, plastic), diameter, insulation and connection type (direct to storage, indirect via immersed or external heat exchanger) on PIR including their effects on the overall heat losses of ready installed storage tanks. Derived from generalized measurements, a calculation method has been developed, which enables to determine the annual heat losses caused by PIR in domestic hot water storages using dynamic system simulations (TRNSYS). In conclusion, different measures for the reduction of PIR induced heat losses and their effectiveness may be presented. © 2015 The Authors.
Plutino Detection Biases, Including the Kozai Resonance
Creators: name: Lawler, S. M.
name: Gladman, B.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Because of their proximity within the transneptunian region, the plutinos (objects in the 3:2 mean-motion resonance with Neptune) are numerous in flux-limited catalogs, and well-studied theoretically. We perform detailed modelling of the on-sky detection biases for plutinos, with special attention to those that are simultaneously in the Kozai resonance. In addition to the normal 3:2 resonant argument libration, Kozai plutinos also show periodic oscillations in eccentricity and inclination, coupled to the argument of perihelion (omega) oscillation. Due to the mean-motion resonance, plutinos avoid coming to pericenter near Neptune's current position in the ecliptic plane. Because Kozai plutinos are restricted to certain values of omega, perihelion always occurs out of the ecliptic plane, biasing ecliptic surveys against finding these objects. The observed Kozai plutino fraction (fkoz) has been measured by several surveys, finding values between 8% and 25%, while the true fkoz has been predicted to be between 10% and 30% by different giant planet migration simulations. We show that the observed fkoz varies widely depending on the ecliptic latitude and longitude of the survey, so debiasing to find the true ratio is complex. Even a survey that covers most or all of the sky will detect an apparent Kozai fraction that is different from the true fkoz. We present a map of the on-sky plutino Kozai fraction that would be detected by all-sky flux-limited surveys. This will be especially important for the Panoramic Survey Telescope & Rapid Response System (Pan-STARRS) and Large Synoptic Survey Telescope (LSST) projects, which may detect large numbers of plutinos as they sweep the sky. The Kozai fraction and the distribution of the orbital elements of Kozai plutinos may be a diagnostic of giant planet migration; future migration simulations should provide details on their resonant Kozai populations.
description: accepted for publication in AJ
Discriminative k-means clustering
Creators: name: Arandjelovic, Ognjen
Publisher: name: arXiv
Year: 2013
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: The k-means algorithm is a partitional clustering method. Over 60 years old, it has been successfully used for a variety of problems. The popularity of k-means is in large part a consequence of its simplicity and efficiency. In this paper we are inspired by these appealing properties of k-means in the development of a clustering algorithm which accepts the notion of "positively" and "negatively" labelled data. The goal is to discover the cluster structure of both positive and negative data in a manner which allows for the discrimination between the two sets. The usefulness of this idea is demonstrated practically on the problem of face recognition, where the task of learning the scope of a person's appearance should be done in a manner which allows this face to be differentiated from others.
Robot based remote laser cutting of three-dimensional automotive composite parts with thicknesses up to 5mm
Creators: name: Bluemel, S.
name: Bastick, S.
name: Staehr, R.
name: Jaeschke, P.
name: Suttmann, O.
name: Kaierle, Stefan
name: Overmeyer, Ludger
Publisher: name: Amsterdam : Elsevier B.V.
Year: 2018
Subjects: subject: CFRP
subject: Cutting
subject: Robod-based
subject: Carbon fiber reinforced plastics
subject: Carbon fibers
subject: Cutting tools
subject: Fiber reinforced plastics
subject: Laser beam cutting
subject: Laser beams
subject: Pulsed lasers
subject: Robots
subject: Ultrafast lasers
subject: Automotive composites
subject: Automotive structures
subject: Carbon fibre reinforced plastic (CFRP)
subject: Cutting efficiency
subject: Laser cutting process
subject: Nanosecond pulsed laser
subject: Remote laser cuttings
subject: Trimming
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik
subject: Dewey Decimal Classification::600 | Technik::670 | Industrielle und handwerkliche Fertigung

description: With the intention to develop a robot based laser cutting process for automotive 3D parts with varying thickness consisting of carbon fibre reinforced plastics (CFRP), strategies of 2D investigations were adapted. The used setup consist of a fibre guided nanosecond pulsed laser with an average power of P L = 1.5 kW, a 6-axis robot and a 3D programmable focusing optic (I-PFO). In a first instance strategies for the remote cutting of material with a thickness of d = 5 mm were developed and optimized concerning cutting efficiency and quality. In a second step the results were transferred to a robot based 3D cutting process. Main challenges are the consideration of the correct angle of incidence, the geometric constancy and the accessibility of the cutting geometry by the I-PFO for complex shaped 3D parts. Therewith, “cutting-on-the-fly” strategies were realized for automated trimming and drilling of large automotive structures.
Optical coherence tomography for laser transmission joining processes in polymers and semiconductors
Creators: name: Meyer, Heiko
name: Zabic, Miroslav
name: Kaierle, Stefan
name: Ripken, Tammo
Publisher: name: Amsterdam : Elsevier B.V.
Year: 2018
Subjects: subject: Laser transmission welding
subject: OCT
subject: Quality control
subject: Fiber bonding
subject: Fiber reinforced plastics
subject: Fourier series
subject: Joining
subject: Laser beam welding
subject: Polymers
subject: Semiconductor lasers
subject: Temperature measurement
subject: Fourier domains
subject: High throughput
subject: Laser transmission
subject: Laser transmission joining
subject: Silicon chip
subject: Three dimensions
subject: Transmission welding
subject: Optical tomography
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik
subject: Dewey Decimal Classification::600 | Technik::670 | Industrielle und handwerkliche Fertigung

description: Laser transmission welding applications become wide spread technology in joining transparent and turbid materials. The requirement of higher throughputs and lesser rejects support the need of alternative methods to commonly used machine vision or temperature measurements. Optical coherence tomography delivers the opportunity to qualitatively assess transmission welding seems and welding spots even in three dimensions. Fourier Domain Mode Lock Lasers (FDMLs) used in OCT enable high throughput by high sweep rates. Preliminary results of OCT used for qualitatively assessment of laser transmission welded polymers and fiber reinforced plastics are shown as well as first approaches of using OCT in a silicon chip bonding process.
Country profile: Uganda
Creators: name: Nuwategeka, Expedito
name: Komakech, Daniel
name: Ajok, Patricia
name: JustEd
Publisher: name: JustEd
Year: 2021
Subjects: education
Uganda
social justice

description: JustEd is an international comparative mixed methods study that explores the lived experiences of secondary school learners of environmental, epistemic and transitional justice. We produce insight into how learner experiences translate into actions to advance Sustainable Development Goals 13 (Climate Action) and 16 (Peace, Justice and Strong Institutions).
Vaccinazione umana, vaccinazione animale e retrovaccinazione antivaiolosa nel Regno di Napoli (XIX secolo)
Creators: name: Jungano, Renato
name: Castagnolo, Gloria
Publisher: name: Nuova Rivista di Storia della Medicina
Year: 2024

description: Nel Regno di Napoli, all’inizio del XIX secolo ebbe inizio la campagna di vaccinazione anti-vaiolosa, in seguito alla analoga campagna svolta nei confronti della Marina inglese. Si fece uso dello stesso metodo di immunizzazione attiva, vale a dire con il vaccino proveniente dal ceppo virale bovino, attivo come agente immunizzante, ma non patogeno per l’uomo, con la inoculazione diretta tra un individuo e un altro. La realizzazione su larga scala della vaccinazione “braccio a braccio” comportava delle difficoltà legate sia all’approvvigionamento dell’agente immunizzante sia alle modalità di inoculazione del vaccino stesso, oltre alla opposizione popolare che unita a quella di varie istituzioni, rese la campagna realmente efficace solo dopo moltissimo tempo. La peggiore, e talvolta funesta, conseguenza era rappresentata dalla trasmissione, con questo sistema, della sifilide e di altre malattie. In questo panorama, alcuni medici incaricati dalla Amministrazione regia, tra i quali Galbiati e Troja, misero a punto a Napoli un ingegnoso “protocollo” di vaccinazione attraverso una sostanziale modifica inerente alla conservazione del “pus vaccinico”, utilizzando la razza bovina come ospite intermedio e serbatoio del materiale vaccinico. Tale modifica consentiva la possibilità di espandere la produzione del vaccino, migliorare in maniera drastica la conservazione dell’efficacia del vaccino, diminuita a causa del trasferimento tra esseri umani e del difficoltoso trasporto, soprattutto non facendo ricorso alla specie umana come “serbatoio” del materiale vaccinico ma utilizzando come ospite intermedio i bovini, che non potevano trasmettere la sifilide, evitando la conseguente diffusione di malattie infettive, spesso anche letali.
description: Nuova Rivista di Storia della Medicina, V. 5 N. 2 (2024)
Study on perturbation schemes for achieving the real PMNS matrix from various symmetric textures
Creators: name: Wang, Bin
name: Tang, Jian
name: Li, Xue-Qian
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The PMNS matrix displays an obvious symmetry, but not exact. There are several textures proposed in literature, which possess various symmetry patterns and seem to originate from different physics scenarios at high energy scales. To be consistent with the experimental measurement, all of the regularities slightly decline, i.e. the symmetry must be broken. Following the schemes given in literature, we modify the matrices (9 in total) to gain the real PMNS matrix by perturbative rotations. The transformations may provide hints about the underlying physics at high energies and the breaking mechanisms which apply during the evolution to the low energy scale, especially the results may be useful for the future model builders.
description: 81 pages, 60 figures, 22 tables
Phenomenological model of anomalous magnon softening and damping in half-metallic manganites
Creators: name: Solontsov, A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: To describe anomalous zone-boundary softening and damping of magnons in manganites we present a phenomenological two-fluid model containing ferromagnetic Fermi-liquid and non-Fermi-liquid components. The Fermi-liquid component accounts for softening of zone-boundary magnons and for the Landau damping of magnons in the Stoner continuum arising at low frequencies due to zero-point effects. Coupling of the Fermi-liquid and non-Fermi-liquid fluids yields conventional long wavelength magnons damped due to their coupling with longitudinal spin fluctuations.
description: 12 pages, 0 figures
Functional coatings of sol-gel on glass substrate using CO2 laser irradiation
Creators: name: Wesang, K.
name: Von Witzendorff, P.
name: Hohnholz, A.
name: Suttmann, O.
name: Kaierle, S.
name: Overmeyer, L.
Publisher: name: Amsterdam : Elsevier B.V.
Year: 2018
Subjects: subject: Glass
subject: Laser annealing sol gel coating
subject: TiO2 coating
subject: ZrO2 coating
subject: Carbon dioxide
subject: Carbon dioxide lasers
subject: Chemical equipment
subject: Chemical vapor deposition
subject: Ovens
subject: Protective coatings
subject: Sol-gel process
subject: Sol-gels
subject: Substrates
subject: Titanium dioxide
subject: Zirconia
subject: Component functionality
subject: Functional coating
subject: Gradient coatings
subject: Microscope images
subject: Sol-gel coatings
subject: Titanium and zirconiums
subject: Zro2 coatings
subject: Annealing
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik
subject: Dewey Decimal Classification::600 | Technik::670 | Industrielle und handwerkliche Fertigung

description: Often Glass products achieve their component functionality only by a specific surface finishing, such as coating or patterning. Compared to vacuum based CVD and PVD coating techniques, the equipment for wet-chemical deposition of sol-gels is less expensive. Heat is needed for a chemical reaction to cure gels and form solid functional layers. In this study, sols with titanium and zirconium were applied on glass substrates by dip coating. The investigated layer thicknesses were in the range between 320 nm and 650 nm. The gel layers were annealed with CO2 laser radiation. Different scanning speeds and laser powers were investigated. Microscope images were used to compare the laser-annealed layers with oven-annealed layers. To conclude, the oven-process can be substituted by laser annealing and additionally enables local patterning. This allows gradient coating solutions for architecture applications.
On the quantum-field description of many-particle Bose systems with spontaneously broken symmetry
Creators: name: Poluektov, Yu. M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: A quantum-field approach to studying the Bose systems at finite temperatures and in states with spontaneously broken symmetry, in particular in a superfluid state, is proposed. A generalized model of a self-consistent field (SCF) for spatially inhomogeneous many-particle Bose systems is used as the initial approximation. A perturbation theory has been developed, and a diagram technique for temperature Green's functions (GFs) has been constructed. The Dyson's equations joining the eigenenergy and vertex functions have been deduced.
description: 14 pages, 5 figures
Country profile: Nepal
Creators: name: Singh, Ganesh
name: Karki, Mrigendra
name: Paudel, Mohan
name: Ranabhat, Srijana
name: Singh, Ashik
name: JustEd
Publisher: name: JustEd
Year: 2021
Subjects: education
social justice
Nepal

description: JustEd is an international comparative mixed methods study that explores the lived experiences of secondary school learners of environmental, epistemic and transitional justice. We produce insight into how learner experiences translate into actions to advance Sustainable Development Goals 13 (Climate Action) and 16 (Peace, Justice and Strong Institutions).
Minimum numbers and Wecken theorems in topological coincidence theory. I
Creators: name: Koschorke, Ulrich
Publisher: name: arXiv
Year: 2013
Subjects: subject: Algebraic Topology (math.AT)
subject: FOS: Mathematics
subject: Primary 54H25, 55M20, Secondary 55P35, 55Q25, 55Q40

description: Minimum numbers measure the obstruction to removing coincidences of two given maps (between smooth manifolds M and N of dimensions m and n, resp.). In this paper we compare them to four distinct types of Nielsen numbers. These agree with the classical Nielsen number when m = n (e.g. in the fixed point setting where M = N and one of the maps is the identity map). However, in higher codimensions m - n > 0 their definitions and computations involve distinct aspects of differential topology and homotopy theory. We develop tools which help us 1.) to decide when a minimum number is equal to a Nielsen number ("Wecken theorem"), and 2.) to determine Nielsen numbers. Here certain homotopy theoretical criteria play a central role. E.g. failures of the "Wecken condition" (cf. definition 1.18 below) can have very interesting geometric consequences. The selfcoincidence case where the two maps are homotopic turns out to be particularly illuminating. We give many concrete applications in special settings where M or N are spheres, spherical space forms, projective spaces, tori, Stiefel manifolds or Grassmannians. Already in the simplest examples an important role is played e.g. by Kervaire invariants, all versions of Hopf invariants (a la James, Hilton, Ganea,...) and the elements in the stable homotopy of spheres defined by invariantly framed Lie groups.
description: Coincidence, minimum number, Nielsen number, Wecken condition, loose by small deformation, Kervaire invariant, Hopf invariant, degree
title: School Counselor Knowledge, Beliefs, and Practices Related to the Implementation of Standards-Based Comprehensive School Counseling in the United States
Creators: name: Lauterbach, Alexandra
name: Harrington, Karen
name: Yakut, Ayse
name: Krezmien, Michael
Publisher: name: William & Mary Libraries
Year: 2018

description: As school counselors have adapted to changing policy and social structures, their beliefs, knowledge, and practices have evolved. Over the past two decades, a body of survey research has examined school counselors’ beliefs, knowledge, and practices, though no systematic review exists. In this review, we synthesize and evaluate survey research on the knowledge, beliefs, and practices relevant to the implementation of a standards-based comprehensive school counseling model in the United States. We identify the most salient findings, evaluate the research, identify the most rigorous studies, discuss their findings, and provide recommendations for future research. Considering the recent changes to how funding is distributed to states and schools within the Every Student Succeeds Act of 2015, such research is both timely and necessary to help clarify and increase the role school counselors play in helping schools achieve the goals of legislation.
A Dietary Study of big brown (Eptesicus fuscus) and northern bats (Myotis septentrionalis) in Western Kentucky
Creators: name: Asher, Sarah Elizabeth
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Mammalia
Chiroptera
Chordata
Animalia
bats
bat

description: (Uploaded by Plazi for the Bat Literature Project) No abstract provided.
Generalized correlation functions for conductance fluctuations and the mesoscopic spin Hall effect
Creators: name: Ramos, J. G. G. S.
name: Barbosa, A. L. R.
name: Bazeia, D.
name: Hussein, M. S.
name: Lewenkopf, C. H.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Chaotic Dynamics (nlin.CD)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We study the spin-Hall conductance fluctuations in ballistic mesoscopic systems. We obtain universal expressions for the spin and charge current fluctuations, cast in terms of current-current autocorrelation functions. We show that the latter are conveniently parametrized as deformed Lorentzian shape lines, functions of an external applied magnetic field and the Fermi energy. We find that the charge current fluctuations show quite unique statistical features at the symplectic-unitary crossover regime. Our findings are based on an evaluation of the generalized transmission coefficients correlation functions within the stub model and are amenable to experimental test.
description: Accepted to be published - Physical Review B (PRB)
Butane Heat Pipes for Stagnation Temperature Reduction of Solar Thermal Collectors
Creators: name: Föste, Sebastian
name: Schiebler, Bert
name: Giovannetti, Federico
name: Rockendorf, Gunter
name: Jack, Steffen
Publisher: name: London : Elsevier Ltd.
Year: 2016
Subjects: subject: butane
subject: cost reduction
subject: evacuated tube collector
subject: flat plate collector
subject: heat pipe
subject: stagnation temperature
subject: Acetone
subject: Butane
subject: Cost reduction
subject: Heat transfer
subject: Solar collectors
subject: Solar heating
subject: Temperature
subject: Thermal conductivity
subject: Thermal gradients
subject: Evacuated tube collectors
subject: Flat-plate collector
subject: Heat transfer media
subject: High temperature gradient
subject: Maximum temperature
subject: Solar thermal collector
subject: Temperature reduction
subject: Thermal conductance
subject: Heat pipes
subject: Konferenzschrift
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: Heat pipes in solar thermal collectors enable to reduce the temperature loads in the solar circuit during stagnation periods by exploiting their dry out limit. Typically water, pentane or acetone are used as heat transfer media in collector heat pipes. Butane is very suitable to reach a high temperature gradient of the dry out even if the maximum temperature in the fluid circuit should be designed to 120 °C or below. The paper presents experimental results with butane heat pipes that operate up to a maximum temperature of 120 °C with a high temperature gradient in the dry-out region. This ensures that the collector performance in the operating range (typically up to 100 °C) is not affected negatively by the dry-out. Different approaches to increase the thermal conductance of butane heat pipes by enhancing the inner surface of the condenser or of both, the condenser and the evaporator are experimentally assessed and discussed. Measurement results report an increase of the heat pipes' thermal conductance from 3 W/K (standard geometry) to 23 W/K.
title: Commentary: On School-Based Counseling Policy and Evaluation
Creators: name: Sink, Christopher
name: Carey, Jay
Publisher: name: William & Mary Libraries
Year: 2018

description: The writers of this commentary advocate for increased attention to school-based policy development, effective policy implementation, and high quality policy research across the world. A new organization (International Society for Policy Research and Evaluation in School-Based Counseling) focused on these topics is introduced. In closing, the article contents comprising the first issue of Society’s scholarly journal are overviewed.