cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Manifestation of vortex depinning transition in nonlinear current-voltage characteristics of polycrystalline superconductor Y_{1-x}Pr_{x}Ba_2Cu_3O_7
Creators: name: Rivera, V. A. G.
name: Stari, C.
name: Sergeenkov, S.
name: Marega, E.
name: Araujo-Moreira, F. M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We present our recent results on the temperature dependence of current-voltage characteristics for polycrystalline Y_{1-x}Pr_{x}Ba_2Cu_3O_7 superconductors with x = 0.0, 0.1 and 0.3. The experimental results are found to be reasonably well fitted for all samples by a power like law. According to the theoretical interpretation of the obtained results, nonlinear deviation of our current-voltage characteristics curves from Ohmic behavior below Tc is attributed to the manifestation of dissipation processes related to the current induced depinning of Abrikosov vortices.
description: Accepted for publication in PLA
title: High performance computing solutions for the study of within-host evolution
Creators: name: Perera, Duwage Dahampriya Baladeva Deshan
Publisher: name: Cumming School of Medicine
Year: 2025
Subjects: subject: Bioinformatics
subject: FOS: Computer and information sciences
subject: Evolution
subject: CUDA
subject: Parallel processing
subject: Within-host
subject: Viruses
subject: Epidemiology
subject: Bioinformatics

description: Advancements in sequencing technologies have driven a big data boom in genomics, advancing studies across evolution, epidemiology, and disease transmission. However, challenges in scalability, accuracy, and modeling complexity persist. This thesis addresses these issues through three projects, each offering innovative solutions to critical problems. The core innovations of my thesis work are the development of a scalable, out-of-core, large-scale parallel processing architecture capable of processing big data. This architecture significantly reduces computational time, enabling the modeling of complex interactions between viral evolution and epidemiology. The first project focuses on understanding the domain of transmission tracing in epidemiology. We developed a pipeline inferring viral transmission networks using Bayesian phylogenetics and TransPhylo. This work revealed a critical gap in the field: the lack of evaluations quantifying the accuracy of inferences across diverse epidemiological scenarios, a limitation rooted in the inability of current tools to scale effectively. To address these shortcomings, through our second project, we developed CATE. Through innovations that include an out-of-core file structure, a novel parallelized value look-up algorithm called Compound Interpolated Search (CIS), and CPU and GPU-based parallelization, CATE achieved speeds over 182 times faster than conventional tools. This breakthrough in computational speed makes evolutionary analyses more accessible for large-scale genomic studies. Building on CATE, the third project, Apollo, models within-host viral evolution and infection dynamics across five epidemiological hierarchies, namely network, host, tissue, cell, and viral genome. By simulating complex dynamics, Apollo can be used to validate computational models and provide a framework for studying the interplay between viral evolution and epidemiology. Collectively, these projects advance the field by providing solutions that address key limitations in scalability, accuracy, and modeling complexity. The tools developed in this thesis pave the way for more efficient analyses, enabling researchers to use big data at scale to tackle fundamental questions in evolutionary biology and public health. Importantly, the proposed infrastructure has potential applications beyond genomics, addressing broader challenges in big data analysis.
Operationalizing Complex Causes: A Pragmatic View of Mediation
Creators: name: Gultchin, Limor
name: Watson, David S.
name: Kusner, Matt J.
name: Silva, Ricardo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Methodology (stat.ME)
subject: FOS: Computer and information sciences

description: We examine the problem of causal response estimation for complex objects (e.g., text, images, genomics). In this setting, classical \emph{atomic} interventions are often not available (e.g., changes to characters, pixels, DNA base-pairs). Instead, we only have access to indirect or \emph{crude} interventions (e.g., enrolling in a writing program, modifying a scene, applying a gene therapy). In this work, we formalize this problem and provide an initial solution. Given a collection of candidate mediators, we propose (a) a two-step method for predicting the causal responses of crude interventions; and (b) a testing procedure to identify mediators of crude interventions. We demonstrate, on a range of simulated and real-world-inspired examples, that our approach allows us to efficiently estimate the effect of crude interventions with limited data from new treatment regimes.
Interplay of ferromagnetism and triplet superconductivity in a Josephson junction
Creators: name: Brydon, P. M. R.
name: Kastening, Boris
name: Morr, Dirk K.
name: Manske, Dirk
Publisher: name: arXiv
Year: 2007
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: In this paper we extend our earlier analysis of the novel Josephson effect in triplet superconductor--ferromagnet--triplet superconductor (TFT) junctions [B. Kastening \emph{et al.}, Phys. Rev. Lett. {\bf{96}}, 047009 (2006)]. In our more general formulation of the TFT junction we allow for potential scattering at the barrier and an arbitrary orientation of the ferromagnetic moment. Several new effects are found upon the inclusion of these extra terms: for example, we find that a Josephson current can flow even when there is vanishing phase difference between the superconducting condensates on either side of the barrier. The critical current for a barrier with magnetization parallel to the interface is calculated as a function of the junction parameters, and is found to display strong non-analyticities. Furthermore, the Josephson current switches first identified in our previous work are found to be robust features of the junction, while the unconventional temperature-dependence of the current is very sensitive to the extra terms in the barrier Hamiltonian.
description: 24 pages, 15 figures
title: N-Heterocyclic Carbene-Derived Diradicaloids Featuring Nitrogen-containing and pi-Extended Aromatic Spacers
Creators: name: Harrison, Alexander
Publisher: name: Graduate Studies
Year: 2025
Subjects: subject: Chemistry--Inorganic
subject: Chemistry--Organic
subject: Chemistry--Physical

description: The idea of isolating an organic molecule with two radical centers has intrigued synthetic chemists since the first diradical was reported in 1904. In recent years, there has been a renewed interest in such systems, driven by the desire to understand their unique electronic and magnetic properties and to explore their potential applications. This surge of interest has been made possible by advancements in synthetic strategies and modern spectroscopic techniques, which allow for detailed characterization of these unusual compounds. Despite the progress in discovering new diradical frameworks, efforts to systematically modify existing scaffolds to fine-tune their properties remain limited, which offers an exciting opportunity for further exploration. This dissertation details the investigation into the aspects of structural design that affect the physicochemical properties of diradicaloids, using an efficient and simple synthetic strategy. Chapter One introduces key concepts essential for the design and characterization of diradicals. Topics include the nomenclature and classification of diradicals, synthetic methodologies to tune their properties, and techniques for their characterization. Additionally, this chapter presents my initial exploration into the field of organic diradicals. Chapter Two investigates the impact of functionalizing a 2,2’-bipyridine core at the 5,5’- and 4,4’-positions with spin-bearing imidazolyl substituents. These modifications result in diradicals exhibiting singlet closed-shell and triplet electronic structures, respectively. In Chapter Three, the effects of nitrogen incorporation into the diaryl core on the electronic properties of diradicaloids are studied, with increasing the number of nitrogen atoms yielding increasingly electron-deficient systems. It is determined that a more electron-deficient spacer produced a diamagnetic diradical and a less electron-deficient spacer. Chapter Four examines the influence of expanding π-conjugation in the aromatic spacer through the incorporation of a benzo[ghi]perylene unit. Structural and computational analysis reveal effective spin delocalization across the π-expanded arylene system, stabilizing both the closed-shell singlet ground state and excited open-shell singlet electronic states. A major achievement of this work was the isolation and structural characterization of radical cations derived from these species. This breakthrough, which is outlined in Chapter 2-4, resolved a century-long debate regarding the identity of the persistent monoradical impurity observed in spectroscopic studies of diradicals.
Vitis teutonica A. Braun 1854
Creators: name: Winterscheid, Heinrich
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Vitales
Vitaceae
Vitis
Vitis teutonica

description: Vitis teutonica A. Braun (1854: 147; pl. 3, ex parte [semina]: figs 7–17)
Fig. 5A–B.
Lectotype:—First-step lectotype (designated by Mai & Gregor 1982: 422): A. Braun coll., gathering no. 86, “Taf. XX, Fig. 4 —Museum f. Naturkunde Berlin, Nr. 86”; second-step lectotype (designated here): [MB.Pb.2005/0639.1!], repository: Museum für Naturkunde, Leibniz-Institut für Evolutions- und Biodiversitätsforschung, Berlin (MfN), Alexander Braun collection. Locus typicus: Germany. Hesse: Wetterau, Bad Salzhausen near Nidda. Stratum typicum: Middle Miocene (Langhian), intravolcanic brown-coal deposits (“ Carpolithen-Kohle von Salzhausen ”).
Syntypes:—[MB.Pb.2005/0639.2–11 (original gathering no. 86)!].
Notes:—Alexander Braun (1854) described leaves, fruits and seeds from Salzhausen as Vitis teutonica. Later, the name was only applied for seeds, e.g. Ludwig (1860: 118–120: pl. 45, fig. 5a–g) and Kirchheimer (1936: 91–93; pl. 9, fig. 3a–f. 1938: 335–337; pl. 4, figs 12–15; text-fig. 3).
Mai & Gregor (1982: 422) selected “Taf. XX, Fig. 4 —Museum für Naturkunde Berlin, Nr. 86” with multiple specimens as ‘ lectotype,’ and illustrated a specimen (Mai & Gregor 1982: pl. 20, fig. 4), which was also illustrated in Ludwig (1860: pl. 45, fig. 5c) and in Kirchheimer (1936: pl. 9, fig. 3d). The syntypes in the Museum für Naturkunde in Berlin [A.Braun coll.: MB.Pb.2005/0639 (orig.-no. 86)] consists of eleven seed-remains, but no specimen can be identified as one of the above mentioned illustrations. Here the seed “coll.-no. MB.Pb.2005/0639.1” is selected as the lectotype from the syntypes of the Alexander Braun collection.
Occurrence and habitat:—Late Oligocene and Miocene in Europe in fluviatile floodplain and back-swamp deposits from riparian habitats.
Additional specimens examined:— Germany. Hesse: Wetterau, Bad Salzhausen near Nidda; middle Miocene (Langhian), intravolcanic brown-coal deposits (“Carpolithen-Kohle von Salzhausen”): MfN, Ludwig coll. [MB. Pb.2016/2469].
Family Symplocaceae Desfontaines (1820: 9), nom. cons.
Genus Symplocos Jacquin (1760: 24)
description: Published as part of Winterscheid, Heinrich, 2020, Typifications in fossil-species of Brasenia, Magnolia, Vitis, and Symplocos from the central European Neogene, pp. 113-121 in Phytotaxa 428 (2) on page 119, DOI: 10.11646/phytotaxa.428.2.5, http://zenodo.org/record/13875974
Association of ultracold double-species bosonic molecules
Creators: name: Weber, C.
name: Barontini, G.
name: Catani, J.
name: Thalhammer, G.
name: Inguscio, M.
name: Minardi, F.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: We report on the creation of heterospecies bosonic molecules, associated from an ultracold Bose-Bose mixture of 41K and 87Rb, by using a resonantly modulated magnetic field close to two Feshbach resonances. We measure the binding energy of the weakly bound molecular states versus the Feshbach field and compare our results to theoretical predictions. We observe the broadening and asymmetry of the association spectrum due to thermal distribution of the atoms, and a frequency shift occurring when the binding energy depends nonlinearly on the Feshbach field. A simple model is developed to quantitatively describe the association process. Our work marks an important step forward in the experimental route towards Bose-Einstein condensates of dipolar molecules.
description: 5 pages, 4 figures
title: Gender and Ministerial Appointments in Africa.
Creators: name: Saaka, Saaka Sulemana
Publisher: name: Graduate Studies
Year: 2025
Subjects: subject: Africa
subject: Executive
subject: Gender
subject: Ministerial Appointments
subject: Portfolio Allocations
subject: Cabinet Shuffles
subject: Political Science
subject: FOS: Political science

description: This dissertation examines the gendered dynamics of ministerial appointments in Africa, focusing on the vetting process, patterns of portfolio allocations, and cabinet shuffles. The process of appointing cabinet ministers is shaped by both formal and informal rules (Annesley, Beckwith, and Franceschet 2019). While formal rules grant presidents the authority to select ministers, informal norms often constrain their choices (Franceschet 2016). In some contexts, formal rules include confirmation hearings, which enable legislative oversight and public scrutiny (Heitshusen 2015). Despite extensive research on confirmation hearings in Western democracies (Canes-Wrone and De Marchi 2002; Krutz, Fleisher, and Bond 1998), little attention has been paid to how these processes operate in African contexts or whether they are gendered. To address this gap, Chapter One analyzes ministerial confirmation hearings in Ghana and Kenya. The findings reveal that women nominees face greater scrutiny concerning personal appearance and ethical standards than their male counterparts. Building on vetting process, Chapter Two shifts focus to patterns of portfolio allocation across 25 African countries. Recent data shows women hold 23.8% of cabinet positions in Africa, slightly above the global average of 22.8% (Inter-Parliamentary Union 2024; UN Women 2024). However, the criteria for being considered ministrable often include educational and professional backgrounds and political experience (Annesley, Beckwith, and Franceschet 2019). I find that, contrary to expectations, among the women ministers appointed, a higher proportion are assigned to high-prestige portfolios compared to men. Having established the vetting process of minister and portfolio allocations, Chapter Three focuses on cabinet shuffles to address what happens once they are in office. These intra-term changes, made to manage coalitions, consolidate power, or respond to political and economic shocks (Grotz, Kroeber, and Kukec 2022; Helms and Vercesi 2022), often produce gendered outcomes. The findings show that women in Africa serve shorter terms and are more likely to be replaced by men during shuffles. In sum, this dissertation uses a mixed methods approach to study the gender dynamics of ministerial appointments across Africa. By examining confirmation hearings, portfolio allocation, and cabinet shuffles, it advances our understanding of how gender influences political appointments in Africa.
title: Östliches Rifgebirge, Marokko
Creators: name: Eiwanger, Josef
Publisher: name: Deutsches Archäologisches Institut
Year: 2014

description: e-Forschungsberichte, Faszikel 1 (2014)
description: During 2012 and 2013 the DAI/KAAK-project “Prehistory and Protohistory of the Eastern Rif Mountains in Morocco” in cooperation with the National Institute of Archaeology and Patrimony (Rabat, Morocco) has been continued. The research focussed on the rockshelter of Ifri n’Ammar in the eastern outskirts of the Rif. Beside the former excavations which furnished a stratigraphy dating between 180 000 and 10 000 years a new surface in the center of the site has been opened. The main reason was to receive more information about the spatial archaeology of this important site. In 2012–2013 the layers of the upper Atérien technocomplex have been excavated. Beside this, a comprehensive study on the traseology of Atérien silex tools has been started.
title: Khirbat Yajuz, Jordanien
Creators: name: Eger, Christoph
Publisher: name: Deutsches Archäologisches Institut
Year: 2014

description: e-Forschungsberichte, Faszikel 1 (2014)
description: One focus of the project „Studies on regional burial customs in Late Antiquity. The necropolis of the 4th–8th cent. AD in the provincia Arabia“ is the necropolis of Khirbat Yajuz in the northern outskirts of the city of Amman. The site has a significant importance as it provides an extraordinary insight into the typical grave furniture and personal adornment of a small town population of the Late Roman and Byzantine period. A systematic study and documentation of the findings has been essential to create a database for further analyses of the burial customs and the material culture.
Microscopic justification of the Equal Filling approximation
Creators: name: Perez-Martin, Sara
name: Robledo, L. M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The Equal Filling Approximation, a procedure widely used in mean field calculations to treat the dynamics of odd nuclei in a time reversal invariant way, is justified as the consequence of a variational principle over an average energy functional. The ideas of Statistical Quantum Mechanics are employed in the justification. As an illustration of the method, the ground and lowest lying states of some octupole deformed Radium isotopes are computed.
description: 15 pages, 3 figures
Symplocos casparyi Ludwig 1857
Creators: name: Winterscheid, Heinrich
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Ericales
Symplocaceae
Symplocos
Symplocos casparyi

description: Symplocos casparyi Ludwig (1857: 99; pl. 20, fig. 6a–g)
Lectotype (retypified and designated here):—[MB.Pb.2004/0825!], illustrated in: Mai & Martinetto (2006: pl. 3, fig. 2a–c), repository: Museum für Naturkunde, Leibniz-Institut für Evolutions- und Biodiversitätsforschung, Berlin (MfN), Rudolph Ludwig collection. Locus typicus: Germany. Hesse: Wetterau, Dorheim near Friedberg. Stratum typicum: Early Pliocene (Zanclean), intravolcanic brown-coal deposits.
Notes:—The name Symplocos casparyi R.Ludw. 1857 has to be retypified. Mai & Martinetto (2006: 5) selected one specimen as neotype of Symplocos casparyi and pointed out: “ 1 specimen detected (Nov. 2003) in Ludwig’s collection from Dorheim (MNB 2004/825), […] is designated here as the neotype.” This specimen is part of the syntypes of Ludwig’s collection described in the protologue of Symplocos casparyi, and must be designated as lectotype (Turland et al. 2018: ICN Art. 9.3).
Occurrence and habitat:— Symplocos casparyi occurs from the early Oligocene to the late Pliocene of Europe: France, Germany, Denmark and Poland (Mai & Martinetto 2006).
description: Published as part of Winterscheid, Heinrich, 2020, Typifications in fossil-species of Brasenia, Magnolia, Vitis, and Symplocos from the central European Neogene, pp. 113-121 in Phytotaxa 428 (2) on page 120, DOI: 10.11646/phytotaxa.428.2.5, http://zenodo.org/record/13875974
A numerical investigation of two boundary element methods
Creators: name: Quek, Mui Hoon
Publisher: name: University of British Columbia
Year: 2010

description: This thesis investigates the viability of two boundary element methods for solving steady state problems, the continuous least squares method and the Galerkin minimization technique. In conventional boundary element methods, the singularities of the fundamental solution involved are usually located at fixed points on the boundary of the problem's domain or on an auxiliary boundary. This leads to some difficulties: when the singularities are located on the problem domain's boundary, it is not easy to evaluate the solution for points on or near that boundary whereas if the singularities are placed on an auxiliary boundary, this auxiliary boundary would have to be carefully chosen. Hence the methods studied here allow the singularities, initially located at some auxiliary boundary, to move until the best positions are found. These positions are determined by attempting to minimize the error via the least squares or the Galerkin technique. This results in a highly accurate, adaptive, but nonlinear method. We study various methods for solving systems of nonlinear equations resulting from the Galerkin technique. A hybrid method has been implemented, which involves the objective function from the least squares method while the gradient is due to the Galerkin method. Numerical examples involving Laplace's equation in two dimensions are presented and results using the discrete least squares method, the continuous least squares method and the Galerkin method are compared and discussed. The continuous least squares method appears to give the best results for the sample problems tried.
title: Göbekli Tepe, Türkei
Creators: name: Dietrich, Oliver
name: Köksal-Schmidt, Çiğdem
name: Notroff, Jens
name: Schmidt, Klaus
Publisher: name: Deutsches Archäologisches Institut
Year: 2014

description: e-Forschungsberichte, Faszikel 1 (2014)
description: A few kilometres to the northeast of Şanlıurfa in southeastern Turkey the tell of Göbekli Tepe is situated. The immense ruin hill formed by the debris of monumental constructions dating back into the 10th and 9th millennium BC (the Pre-Pottery Neolithic) has been excavated systematically since 1995. The last two excavation campaigns were preliminary focussed on work to erect permanent shelter structures to preserve the site.
On collisions driven negative energy waves and Weibel instability of a relativistic electron beam in a quasi-neutral plasma
Creators: name: Karmakar, Anupam
name: Kumar, Naveen
name: Shvets, Gennady
name: Polomarov, Oleg
name: Pukhov, Alexander
Publisher: name: arXiv
Year: 2008
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: A new quasi-neutral model describing the Weibel instability of a high-current relativistic beam propagating through a resistive plasma is developed. It treats beam electrons as kinetic particles, and ambient plasma as a non-relativistic fluid. For a finite-temperature beam, a new class of negative energy magneto-sound waves is identified, which can possess negative energy. Their growth due to collisional dissipation in the cold return current destabilizes the beam-plasma system even for high beam temperatures. We perform detailed two- and three-dimensional particle-in-cell (PIC) simulations of the thermal beam and collisional plasma. It is shown that in three dimensions, the Weibel instability persists even for physically collisionless background plasma. The anomalous plasma resistivity is then caused by the two-stream instability.
description: 5 pages, 3 figures
A state-dependent policy for computer system load regulation
Creators: name: Wong, William Chun Mun
Publisher: name: University of British Columbia
Year: 2010

description: One of the principal ideas behind multiprogramming is to make more effective use of the system resources. However, in order to avoid excessive interactions among the competing jobs, which will result in general degradation of system performance, the number and composition of jobs in the multiprogramming set should be carefully controlled. This is the function of the load-control policy. A good load-control policy should be adaptive to work load variation. A load-control policy based on a mathematical model has many advantages including: 1) The effect on performance due to system and/or work load changes can be readily analyzed. 2) It is easy to adopt different optimization criteria by choosing suitable objective functions. 3) The load-control policy is adaptive if the objective function is chosen to be a function of the state of the system. In [11], Chanson and Lo described an adaptive load-control policy based on stochastic control theory. The computer system is modelled as a queueing network with two classes of jobs -batch and interactive. The policy determines the number of jobs of each type to be activated for execution at each system state which is defined to be the total number of jobs of each class in the system(those executing plus those waiting to be activated). The objective is to minimize a weighted sum of the number of jobs in the system. It was shown that the mean response time and throughput rate of the system improve significantly over those in the case of no load control. This thesis extends the results in [11]. The model is generalized to "S" classes of jobs instead of two. The system state is also refined by taking into consideration of the jobs waiting to be activated as well as those that are executing. This eliminates the possibility that the computed number of jobs to be activated in a class is less than the number of executing jobs in that class. It is also shown that this policy performs better than the one described in [11] at the expense of higher computational overhead.
title: Rom, Italien. Domus Aurea
Creators: name: Beste, Heinz-Jürgen
Publisher: name: Deutsches Archäologisches Institut
Year: 2014

description: e-Forschungsberichte, Faszikel 1 (2014)
description: The Rome Department of the German Archaeological Institute was asked by the Soprintendenza Archeologica di Roma, together with the Centro Nazionale di Ricerca, to prepare the extensive documentation needed for the restoration of the Domus Aurea. In Rooms 22–34 the modern cement floor was removed, revealing that all marble slabs had been removed in antiquity. Instead, a wooden floor had been inserted, preventing direct contact with the cold and humid ground and thus enabling the storage of delicate goods, e.g. wheat, fabric and spices.
Radio properties of the optically identified supernova remnant G107.0+9.0
Creators: name: Reich, Wolfgang
name: Gao, Xuyang
name: Reich, Patricia
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The vast majority of Galactic supernova remnants (SNRs) were detected by their synchrotron radio emission. Recently, the evolved SNR G107.0+9.0 with a diameter of about 3~deg or 75~pc up to 100~pc in size was optically detected with an indication of faint associated radio emission. This SNR requires a detailed radio study. We aim to search for radio emission from SNR G107.0+9.0 by analysing new data from the Effelsberg 100-m and the Urumqi 25-m radio telescopes in addition to available radio surveys. Radio SNRs outside of the Galactic plane, where confusion is rare, must be very faint if they have not been identified so far. Guided by the H$α$ emission of G107.0+9.0, we separated its radio emission from the Galactic large-scale emission. Radio emission from SNR G107.0+9.0 is detected between 22~MHz and 4.8~GHz with a steep non-thermal spectrum, which confirms G107.0+9.0 as an SNR. Its surface brightness is among the lowest known for Galactic SNRs. Polarised emission is clearly detected at 1.4~GHz but is fainter at 4.8~GHz. We interpret the polarised emission as being caused by a Faraday screen associated with G107.0+9.0 and its surroundings. Its ordered magnetic field along the line of sight is below 1~$μ$G. At 4.8~GHz, we identified a depolarised filament along the western periphery of G107.0+9.0 with a magnetic field strength along the line of sight $B{_{||}} \sim 15~μ$G, which requires magnetic field compression. G107.0+9.0 adds to the currently small number of known, evolved, large-diameter, low-surface-brightness Galactic SNRs. We have shown that such objects can be successfully extracted from radio-continuum surveys despite the dominating large-scale diffuse Galactic emission.
description: 8 pages, 12 figures, accepted by Astronomy & Astrophysics
title: Kaukasus. Subsistenzwirtschaft und Umweltnutzung in Siedlungen des 6. Jt. v. Chr.
Creators: name: Benecke, Norbert
name: Neef, Reinder
Publisher: name: Deutsches Archäologisches Institut
Year: 2014

description: e-Forschungsberichte, Faszikel 1 (2014)
description: Bio-archaeological studies on animal and plant remains from Neolithic sites in the Southern Caucasus region dating to the 6th millennium BC could prove that the cultivation of crops (wheat, barley, lentil) and breeding of domestic animals like cattle, sheep, goats and pigs provided a sufficient and stable subsistence basis for the settlement’s inhabitants. Wild plants and wild animals were used only in a low extent for subsistence purposes. First aDNA studies show a high variability in mitochondrial haplotypes in sheep and pigs that might be indicative for a close proximity to the areas of primary domestication in Upper Mesopotamia. There is no evidence of local domestication for none of the domestic animals, i.e. livestock animals were introduced to the Southern Caucasus in the course of neolithization.
title: Botswana und Südafrika: Baobabs und das Königreich Botswana
Creators: name: Heußner, Karl-Uwe
Publisher: name: Deutsches Archäologisches Institut
Year: 2014

description: e-Forschungsberichte, Faszikel 1 (2014)
description: The aim of this project is to find a valid source of high-resolution palaeoclimatic information as a means for predicting the climate change impact on the African continent. The baobab is a common tree in semi-arid Africa that can reach ages of up to 2000 years. The way its tree rings develop has not been fully understood yet. Therefore, by using radius and circumference dendrometers on trees as well as special drilling to obtain wood samples, primary questions concerning dormant and growth periods shall be answered. In a second step, it will be scrutinized how climate signals and stable isotopes are transferred into the tree rings. The first results show a correlation between tree ring growth and the precipitation amount of the same year as well as significant correlations between the δ 13 C and δ 18 O values with climate data.
Progressive transformation of a flux rope to an ICME
Creators: name: Dasso, S.
name: Nakwacki, M. S.
name: Démoulin, P.
name: Mandrini, C. H.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The solar wind conditions at one astronomical unit (AU) can be strongly disturbed by the interplanetary coronal mass ejections (ICMEs). A subset, called magnetic clouds (MCs), is formed by twisted flux ropes that transport an important amount of magnetic flux and helicity which is released in CMEs. At 1 AU from the Sun, the magnetic structure of MCs is generally modeled neglecting their expansion during the spacecraft crossing. However, in some cases, MCs present a significant expansion. We present here an analysis of the huge and significantly expanding MC observed by the Wind spacecraft during 9 and 10 November, 2004. After determining an approximated orientation for the flux rope using the minimum variance method, we precise the orientation of the cloud axis relating its front and rear magnetic discontinuities using a direct method. This method takes into account the conservation of the azimuthal magnetic flux between the in- and out-bound branches, and is valid for a finite impact parameter (i.e., not necessarily a small distance between the spacecraft trajectory and the cloud axis). Moreover, using the direct method, we find that the ICME is formed by a flux rope (MC) followed by an extended coherent magnetic region. These observations are interpreted considering the existence of a previous larger flux rope, which partially reconnected with its environment in the front. These findings imply that the ejected flux rope is progressively peeled by reconnection and transformed to the observed ICME (with a remnant flux rope in the front part).
description: Solar Physics (in press)
Microscale simulation of adhesive and cohesive failure in rough interfaces
Creators: name: Hirsch, Franz
name: Kästner, Markus
Publisher: name: arXiv
Year: 2021
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Multi-material lightweight designs, e.g. the combination of aluminum with fiber-reinforced composites, are a key feature for the development of innovative and resource-efficient products. The connection properties of such bi-material interfaces are influenced by the geometric structure on different length scales. In this article a modeling strategy is presented to study the failure behavior of rough interfaces within a computational homogenization scheme. We study different local phenomena and their effects on the overall interface characteristics, e.g. the surface roughness and different local failure types as cohesive failure of the bulk material and adhesive failure of the local interface. Since there is a large separation in the length scales of the surface roughness, which is in the micrometer range, and conventional structural components, we employ a numerical homogenization approach to extract effective traction-separation laws to derive effective interface parameters. Adhesive interface failure is modeled by cohesive elements based on a traction-separation law and cohesive failure of the bulk material is described by an elastic-plastic model with progressive damage evolution.
description: Accepted manuscript
Ost-Berliner Zeitreisen - Vier Digitalisierungsprojekte des Industriesalons Schöneweide 2019-2023
Creators: name: Wedepohl, Steffen
Publisher: name: Zenodo
Year: 2022
Subjects: International Open Access Week 2022
Open Access
Berlin
DDR
Fotograf: Hans-Joachim Köhler
Industriegeschichte
Werk für Fernsehelektronik

description: Der Industriesalon Schöneweide ist ein „Bottom-Up-Projekt“, das in Schöneweide über viele Jahre gewachsen ist. Der gemeinnützige Verein wurde 2009 von aktiven Bürgern, Denkmalschützern, Zeitzeugen, Professoren der HTW Berlin und von vor Ort ansässigen Unternehmen gegründet.Seit dem Jahr 2016 erhält der Verein eine jährliche Projektförderung sowohl von der Senatsverwaltung für Wirtschaft, Energie und Betriebe als auch vom Bezirk Treptow-Köpenick. Förderziel ist die Vermittlung und Erschließung der lokalen Industriekultur - auch als neues Thema für den Berlin Tourismus. Dafür wurde im Industriesalon ein professionell arbeitendes Besucherzentrums etabliert, das verschiedene Themen-Touren durch das denkmalgeschützte „Elektropolis“ anbietet. Die Ergebnisse dieser vier Digitalisierungsprojekte sind auf der Museumsplattform museum-digital.de abrufbar.
title: Understanding the barriers to, and impact of, men's engagement in physical activity and health related behaviours : an examination of an English Premier League football in the community men's health programme
Creators: name: Curran, KM
Publisher: name: Liverpool John Moores University
Year: 2013

description: This thesis outlines research undertaken by formal collaboration between Everton Football Club's Football in the Community (FitC) scheme; Everton in the Community (FitC) and Liverpool John Moores University, School of Sport and Exercise Sciences. In recent years, there has been recognition of the influence that English Premier league (EPL) football clubs can have in attracting men to physical activity and health engagement programmes. Despite attempts to align FitC programmes with suitable evaluation procedures, there still remains limited evaluative empirical evidence. '. Study 1 adopted ethnographic principles to explore the effectiveness of, and identify the barriers to, promoting positive health behaviours and messages to male football fans at an EPL football stadium on match days. Results showed that in general, men did not wish to engage in health related behaviours on match days however approaches that did not impose on, nor contaminate, the men's match day experience were more successful. Study 2 adopted a multi-method approach to explore the distinct barriers that hard-to-reach (HTR) male populations encounter when attempting to commit to regular participation in physical activity and health behaviours and to examine the impact of engaging in a 12 week FitC intervention. Economic, environmental and social barriers to engagement in regular physical activity and positive health behaviours are highlighted and specific biopsychosocial effects of engaging in the FitC programme are identified. Study 3 utilised informal semi structured interviews with programme participants to explore the contextual, environmental and psychosocial barriers experienced by men from HTR populations. Psychosocial motivations for programme uptake and the impact of regular engagement in the FitC men's health programme are discussed. It is recommended that commissioning agencies should endorse and fund men's health initiatives delivered in and by professional sports clubs. To maintain participant engagement and maximise improvements to men's health and wellbeing, alterations to current practice and research are discussed.
BLOCKCHAIN TECHNOLOGY AND CYBERSECURITY. CRYPTOCURRENCIES AND THEIR IMPACT ON CYBERCRIME
Creators: name: Karshiyev, Abdumalik
Publisher: name: Zenodo
Year: 2025

description: Cryptocurrencies, such as Bitcoin and Ethereum, have transformed the financial landscape, offering a decentralized and transparent medium for digital transactions. However, they have also facilitated cybercriminal activities by providing anonymous and untraceable methods for financial transactions. This article explores the intersection of cryptocurrencies and cybercrime, focusing on how digital currencies have been used in illegal activities such as ransomware, money laundering, and darknet transactions. The study also reviews existing literature on the impact of cryptocurrencies on cybercrime and presents potential measures to curb their misuse while maintaining their benefits.
Remarks on lines and minimal rational curves
Creators: name: Mok, Ngaiming
name: Sun, Xiaotao
Publisher: name: arXiv
Year: 2008
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics
subject: 14D20

description: We determine all of lines in the moduli space $M$ of stable bundles for arbitrary rank and degree. A further application of minimal rational curves is also given in last section.
URBAN-WASTE Policy briefs
Creators: name: López-Murcia, Javier
name: Perello, Michelle
Publisher: name: Zenodo
Year: 2019
Subjects: waste management
waste prevention
policy making
stakeholder engagement

description: This deliverable contains two policy briefs that summarize the URBAN-WASTE experience in mobilizing stakeholders in the co-creation, co-implementation and co-monitoring of eco-innovative waste management and prevention strategies, describing the methodology applied, results achieved, lessons learnt and a set of policy recommendations for further mobilization.
title: Shir, Syrien: Siedlung und Umland des 7. Jts. v. Chr. in der nördlichen Levante
Creators: name: Bartl, Karin
Publisher: name: Deutsches Archäologisches Institut
Year: 2014

description: e-Forschungsberichte, Faszikel 1 (2014)
description: The Late Neolithic settlement of Shir is one of the few archaeological sites in Syria, where a settlement sequence for the entire 7th Millennium BC is present. The data generated between 2005 and 2010 allow detailed insights into settlement layout, architecture development, burial customs and economic basis. In addition, the findings of lithics, ceramics and objects enable comprehensive analyzes on raw materials, technologies, use concepts, and interregional contacts in the early Late Neolithic period.
title: Istanbul, Türkei: Istanbulder Holzhäuser
Creators: name: Bachmann, Martin
Publisher: name: Deutsches Archäologisches Institut
Year: 2014

description: e-Forschungsberichte, Faszikel 1 (2014)
description: Wooden houses played a crucial role in Istanbul's historic topography. Today, they have largely disappeared from the cityscape. The documentation of the few remaining buildings is a desideratum and a race against time. To capture a broad spectrum of wooden houses in diachronic, typological and topographical respects, the research activities concentrated in recent years on the Bosporus and the Princes‘ Islands. The Princes' Islands were in the 19th century the preferred summer resort of the Christian minority with an own typological development of wooden buildings that leaned heavily on European and North American models. Also rationalization efforts can be seen in the often represented pairs of semis. In the Bosporus community Tarabya, however, the summer residences of the great European powers in the 19th century accumulated. A prominent example is the historic summer residence of the German Ambassador in an extensively green area. Here two remarkably functional buil- dings – the carriage house and the sailors' house – were documented in 2013. The sailors' house was erected during World War I and represents the last generation of timber structures in Istanbul before their final disappearance.
The Origin of Parity Violation in Polarized Dust Emission and Implications for Cosmic Birefringence
Creators: name: Clark, S. E.
name: Kim, Chang-Goo
name: Hill, J. Colin
name: Hensley, Brandon S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Recent measurements of Galactic polarized dust emission have found a nonzero $TB$ signal, a correlation between the total intensity and the $B$-mode polarization component. We present evidence that this parity-odd signal is driven by the relative geometry of the magnetic field and the filamentary interstellar medium in projection. Using neutral hydrogen morphology and Planck polarization data, we find that the angle between intensity structures and the plane-of-sky magnetic field orientation is predictive of the signs of Galactic $TB$ and $EB$. Our results suggest that magnetically misaligned filamentary dust structures introduce nonzero $TB$ and $EB$ correlations in the dust polarization, and that the intrinsic dust $EB$ can be predicted from measurements of dust $TB$ and $TE$ over the same sky mask. We predict correlations between $TE$, $TB$, $EB$, and $EE/BB$, and confirm our predictions using synthetic dust polarization maps from magnetohydrodynamic simulations. We introduce and measure a scale-dependent effective magnetic misalignment angle, $ψ_\ell^{dust} \sim 5^\circ$ for $100 \lesssim \ell \lesssim 500$, and predict a positive intrinsic dust $EB$ with amplitude $\left \lesssim 2.5~μ\mathrm{K^2_{CMB}}$ for the same multipole range at 353 GHz over our sky mask. Both the sign and amplitude of the Galactic $EB$ signal can change with the sky area considered. Our results imply that searches for parity violation in the cosmic microwave background must account for the nonzero Galactic $EB$ and $TB$ signals, necessitating revision of existing analyses of the evidence for cosmic birefringence.
description: 17 pages, 9 figures, submitted to ApJ
Origin of Warm High-Velocity Dense Gas in ULIRGs
Creators: name: Wada, Keiichi
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Possible origins of the molecular absorption discovered in some ULIRGs are investigated, based on a 3-D hydrodynamic model of star-forming interstellar gas in a galactic central region. The blue-shifted, warm ($\sim 200-300$ K), dense ($>10^6$ cm$^{-3}$) molecular gas suggested by CO absorption in IRAS 08752+3915 could be caused by the innermost region of the inhomogeneous inter-stellar medium (ISM) around a supermassive black hole. The infrequent observations of the dense gas with absorption in ULIRGs and Seyfert 2 galaxies could simply suggest that the high-density regions occupy only a very small volume fraction of the obscuring material. This is naturally expected if the inhomogeneous structure of the ISM is caused by non-linear development of instabilities. The model predicts a turbulent velocity field in the obscuring material, therefore blue- and red-shifted gases should be observable with nearly the same probability for the large enough statistical samples.
description: 14 pages, 6 figures. Publications of Astronomical Society of Japan in press
An algorithm for polyhedron modelling and its implementation
Creators: name: Yeung, Kwai-Biu Ricky
Publisher: name: University of British Columbia
Year: 2010

description: This thesis describes an algorithm for calculating the theoretic set operations union, intersection, and difference of two polyhedra. The polyhedra are in the Eulerian surface description format, specified by their vertices, edges, and faces. The representation of polyhedra is based on the unambiguous Boundary Representation scheme. The domain of this algorithm includes all flat-surfaced polyhedra; however, nested holes and curved surfaces are not permitted. The thesis is divided into three parts. The first part presents some mathematical definitions and the representation scheme for polygons and polyhedra. Since there are many similarities between 2-D polygon modelling and 3-D polyhedron modelling, the 2-D polygon modelling algorithm is presented next, followed by the 3-D polyhedron modelling algorithm.
title: Daschur, Ägypten
Creators: name: Alexanian, Nicole
Publisher: name: Deutsches Archäologisches Institut
Year: 2014

description: e-Forschungsberichte, Faszikel 1 (2014)
description: The investigations of the valley temple, lower causeway and harbour of the Bent Pyramid (4th Dyn., 2.600 BC) at Dahshur were continued. In the upper part of the lower causeway a pedestrian underpass was discovered. An excavation and a magnetic survey showed that the brick building to the north of the valley temple of the Bent Pyramid predates the stone-temple and originally stood within an enclosure wall. Magnetic surveying further proved the existence of workmen‘s installations with planned ground layout in the wadi of the Bent Pyramid and south of the Red Pyramid.
ARDC Communities Strategy
Creators: name: Australian Research Data Commons
Publisher: name: Zenodo
Year: 2025
Subjects: subject: Community of Practice
subject: community management
subject: support
subject: facilitation
subject: engagement
subject: review
subject: Evaluation

description: The approach for the ARDC in running and supporting communities of practice. This document provides commentary on the direction and focus of the ARDC supported communities and outlines procedures for setting up, maintenance, review and evaluation.
A universal inequality between angular momentum and horizon area for axisymmetric and stationary black holes with surrounding matter
Creators: name: Hennig, Jörg
name: Ansorg, Marcus
name: Cederbaum, Carla
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We prove that for sub-extremal axisymmetric and stationary black holes with arbitrary surrounding matter the inequality $8π|J|
description: 8 pages