cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Comparative analysis of mycorrhizal communities associated with Struthiopteris spicant (L.) Weiss across Europe and North America
Creators: name: Guillen-Otero, Thais
name: Hertel, Dietrich
name: Quintanilla, Luis G.
name: Lehnert, Marcus
name: Schmid, Mattia
name: Kharazishvili, Davit
name: Fawcett, Susan
name: Kessler, Michael
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2024
Subjects: subject: 580

description: Introduction: Ferns constitute the second largest group of vascular plants. Previous studies have shown that the diversity and composition of fern communities are influenced by resource availability and water stress, among other factors. However, little is known about the influence of these environmental factors on their biotic interactions, especially regarding the relationship between mycorrhizal fungi and ferns. The present study compares the mycorrhizal communities associated with 36 populations of Struthiopteris spicant L. Weiss across Europe and North America. This species exhibits a great tolerance to variations in light, nutrient, and pH conditions, and it can survive with and without mycorrhizae. Methods: With the aim of determining which environmental factors impact the composition and abundance of the root-associated fungal communities in this species, we used an ITS-focused metabarcoding approach to identify the mycorrhizal fungi present and analyzed the influence of climatic and edaphic variables at global and regional scales Results and discussion: We encountered striking differences in the relative abundance of arbuscular mycorrhizal fungi (AMF) between S. spicant populations at both spatial levels. We recorded a total of 902 fungal ASVs, but only 2– 4% of the total fungal diversity was observed in each individual, revealing that each fern had a unique fungal community. Light availability and the interactive action of pH and soil nitrogen concentration showed a positive influence on AMF relative abundance, explaining 89% of the variance. However, environmental factors could only explain 4– 8% of the variability in AMF community composition, indicating that it might be determined by stochastic processes. These results support the hypothesis that ferns may be more independent of mycorrhization than other plant groups and interact with fungi in a more opportunistic manner.
An observationally-constrained model of strong magnetic reconnection in the solar chromosphere. Atmospheric stratification and estimates of heating rates
Creators: name: Baso, C. J. Díaz
name: Rodríguez, J. de la Cruz
name: Leenaarts, J.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The evolution of the photospheric magnetic field plays a key role in the energy transport into the chromosphere and the corona. In active regions, newly emerging magnetic flux interacts with the pre-existent magnetic field, which can lead to reconnection events that convert magnetic energy to thermal energy. We aim to study the heating caused by a strong reconnection event that was triggered by magnetic flux cancellation. We use imaging-spectropolarimetric data in the Fe I 6301A, Fe I 6302A, Ca II 8542A and Ca II K obtained with the CRISP and CHROMIS instruments at the Swedish 1-m Solar Telescope. This data was inverted using multi-atom, multi-line non-LTE inversions using the STiC code. The inversion yielded a three-dimensional model of the reconnection event and surrounding atmosphere, including temperature, velocity, microturbulence, magnetic file configuration, and the radiative loss rate. The model atmosphere shows the emergence of magnetic loops with a size of several arcsecs into a pre-existing predominantly unipolar field. Where the reconnection region is expected to be, we see an increase in the chromospheric temperature of roughly 2000 K as well as bidirectional flows of the order of 10 km s$^{-1}$ emanating from the region. We see bright blobs of roughly 0.2 arcsec diameter in the Ca II K moving at a plane-of-the-sky velocity of order 100 km s$^{-1}$ and a blueshift of 100 km s$^{-1}$, which we interpret as plasmoids ejected from the same region. This evidence is consistent with theoretical models of reconnection and we thus conclude that reconnection is taking place. The chromospheric radiative losses at the reconnection site in our inferred model are as high as 160 kW m$^{-2}$, providing a quantitative constraint on theoretical models that aim to simulate reconnection caused by flux emergence in the chromosphere.
description: 13 pages, 12 figures, accepted for publication in A&A
The CBM-MVD: progress in mechanical integration
Creators: name: Koziel, M.
name: Tischler, T.
name: Müntz, C.
name: Deveaux, M.
name: Stroth, J.
Publisher: name: GSI Helmholtzzentrum fuer Schwerionenforschung, Darmstadt
Year: 2015
Subjects: Physics

description: GSI Scientific Report 2014 - GSI Report 2015-1
Congruences for sums of binomial coefficients
Creators: name: Sun, Zhi-Wei
name: Tauraso, Roberto
Publisher: name: arXiv
Year: 2005
Subjects: subject: Number Theory (math.NT)
subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 11B65, 05A10, 11A07

description: Let q>1 and m>0 be relatively prime integers. We find an explicit period $ν_m(q)$ such that for any integers n>0 and r we have $[n+ν_m(q),r]_m(a)=[n,r]_m(a) (mod q)$ whenever a is an integer with $\gcd(1-(-a)^m,q)=1$, or a=-1 (mod q), or a=1 (mod q) and 2|m, where $[n,r]_m(a)=\sum_{k=r(mod m)}\binom{n}{k}a^k$. This is a further extension of a congruence of Glaisher.
Panoptic Blockchain Ecosystems: An Exploratory Case Study of the Beef Supply Chain
Creators: name: Robb, Lachlan
name: Deane, Felicity
name: Powell, Warwick
Publisher: name: Monash University
Year: 2021
Subjects: subject: Law
subject: FOS: Law

description: Blockchain is a technologically enabled expression of the panopticon metaphor — however, duplicated as both a carrot and a stick. This paper demonstrates how the metaphor can be used to deepen an existing understanding of law and governance through the technology and social tool of blockchain. This enhances our understanding of blockchain and shows a new way of considering its value as a technology. This is presented in three stages.
 The first stage explores the role of the panopticon as initially conceptualised by Bentham, and subsequently developed by Foucault. The second stage of this paper turns to the social and community borne effects of blockchain and the benefits of the technology as a social tool. It is argued that blockchain technology can augment juridic and governance power through the formation of blockchain-enabled communities. These communities will have the means to self-regulate their actions because of the technology in a manner that replicates the qualities of the panopticon. The third stage considers this technology through a legal lens and provides a practical example using observations from the BeefLedger project. This explores the potential value of blockchain to the Australian beef supply chain and importance to food fraud, food safety, and animal welfare.
An ultra-low material budget Cu-based flexible cable for the CBM-MVD
Creators: name: Klaus, P.
name: Michel, J.
name: Wiebusch, M.
name: Koziel, M.
name: Tischler, T.
name: Schreiber, S.
name: Müntz, C.
name: Stroth, J.
Publisher: name: GSI Helmholtzzentrum fuer Schwerionenforschung, Darmstadt
Year: 2015
Subjects: Physics

description: GSI Scientific Report 2014 - GSI Report 2015-1
Multi-strange (anti)baryon enhanced production at FAIR energies
Creators: name: Vassiliev, I.
name: Kisel, I.
name: Zyzak, M.
name: Vovchenko, V.
Publisher: name: GSI Helmholtzzentrum fuer Schwerionenforschung, Darmstadt
Year: 2015
Subjects: Physics

description: GSI Scientific Report 2014 - GSI Report 2015-1
Indirect Pulp Treatment in Lower Primary Molars Applied with A Light-cured Resin-modified Calcium Silicate, Chlorhexidine Gluconate and Calcium Hydroxide
Creators: name: Techatharatip, Oranuch
Publisher: name: The Dental Association of Thailand
Year: 2022
Subjects: Indirect pulp treatment
Chlorhexidine gluconate
Calcium silicate
Calcium hydroxide
Primary teeth

description: Journal of The Dental Association of Thailand, 72, 2, 347-355
$\phi$ meson production in Au+Au collisions and its reconstruction feasibility in the CBM experiment
Creators: name: Vovchenko, V.
name: Vassiliev, I.
name: Kisel, I.
name: Zyzak, M.
Publisher: name: GSI Helmholtzzentrum fuer Schwerionenforschung, Darmstadt
Year: 2015
Subjects: Physics

description: GSI Scientific Report 2014 - GSI Report 2015-1
Analyticity of Off-shell Green's Functions in Superstring Field Theory
Creators: name: Bhattacharya, Ritabrata
name: Mahanta, Ratul
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We consider the off-shell momentum space Green's functions in closed superstring field theory. Recently in arXiv:1810.07197, the off-shell Green's functions -- after explicitly removing contributions of massless states -- have been shown to be analytic on a domain (to be called the LES domain) in complex external momenta variables. Analyticity of off-shell Green's functions in local QFTs without massless states in the primitive domain is a well-known result. Using complex Lorentz transformations and Bochner's theorem allow to extend the LES domain to a larger subset of the primitive domain. For the 2-, 3- and 4-point functions, the full primitive domain is recovered. For the 5-point function, we are not able to obtain the full primitive domain analytically, only a large part of it is recovered. While this problem arises also for higher-point functions, it is expected to be only a technical issue.
description: 27 pages, Version accepted in JHEP
$\pi^{0}$ reconstruction through a $\gamma$-conversion method with KF Particle Finder in the CBM experiment
Creators: name: Zyzak, M.
name: Kisel, I.
name: Vassiliev, I.
Publisher: name: GSI Helmholtzzentrum fuer Schwerionenforschung, Darmstadt
Year: 2015
Subjects: Physics

description: GSI Scientific Report 2014 - GSI Report 2015-1
Enhancing structural control in covalent organic frameworks through steric interaction-driven linker design
Creators: name: Winter, Alena
name: Hamdi, Farzad
name: Eichhöfer, Andreas
name: Saalwächter, Kay
name: Kastritis, Panagiotis L.
name: Haase, Frederik
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2024
Subjects: subject: 530

description: Covalent Organic Frameworks (COFs) exhibiting kagome (kgm) structures are promising crystalline porous materials with two distinct pores. However, there are no reliable synthetic methods to exclusively target the kgm over the polymorphic square-lattice (sql) structure. To address this, we introduce a linker design strategy featuring bulky functional groups, which through steric interactions can hinder the sql net formation, thereby leading to a kgm structure. By rigid attachment of the methyl benzoate groups to a tetradentate COF linker, steric interactions with neighbouring linkers depending on the pore size become possible. The steric interaction was tuned by varying the complementary bidentate linear linker lengths, where the shorter phenylenediamine linker leads to steric hindrance and the formation of the kgm lattice, while with the longer benzidine linker, steric interaction is reduced leading to the sql lattice. Thus, control over the net can be exerted through steric interaction strengths. Additionally, structural analysis revealed the formation of the kgm COF with an unusual ABC stacking, leading to pearl string type pores instead of two distinct pore sizes. This COF system shows that steric interaction-driven design enhances control over COF structures, expanding the design toolbox, but also provides valuable insights into network formation and polymorphism.
Panoptic Blockchain Ecosystems: An Exploratory Case Study of the Beef Supply Chain (Advance)
Creators: name: Robb, Lachlan
name: Deane, Felicity
name: Powell, Warwick
Publisher: name: Monash University
Year: 2021
Subjects: subject: Law
subject: FOS: Law

description: Blockchain is a technologically enabled expression of the panopticon metaphor — however, duplicated as both a carrot and a stick. This paper demonstrates how the metaphor can be used to deepen an existing understanding of law and governance through the technology and social tool of blockchain. This enhances our understanding of blockchain and shows a new way of considering its value as a technology. This is presented in three stages.
 The first stage explores the role of the panopticon as initially conceptualised by Bentham, and subsequently developed by Foucault. The second stage of this paper turns to the social and community borne effects of blockchain and the benefits of the technology as a social tool. It is argued that blockchain technology can augment juridic and governance power through the formation of blockchain-enabled communities. These communities will have the means to self-regulate their actions because of the technology in a manner that replicates the qualities of the panopticon. The third stage considers this technology through a legal lens and provides a practical example using observations from the BeefLedger project. This explores the potential value of blockchain to the Australian beef supply chain and importance to food fraud, food safety, and animal welfare.
Background rejection in the dilepton analysis with the CBM-Micro Vertex Detector
Creators: name: Krebs, E.
name: Galatyuk, T.
name: Stroth, J.
Publisher: name: GSI Helmholtzzentrum fuer Schwerionenforschung, Darmstadt
Year: 2015
Subjects: Physics

description: GSI Scientific Report 2014 - GSI Report 2015-1
Griffiths singularity in the random Ising ferromagnet
Creators: name: Dotsenko, Victor
Publisher: name: arXiv
Year: 2005
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The explicit form of the Griffiths singularity in the random ferromagnetic Ising model in external magnetic field is derived. In terms of the continuous random temperature Ginzburg-Landau Hamiltonian it is shown that in the paramagnetic phase away from the critical point the free energy as the function of the external magnetic field h in the limit h -> 0 has the essential singularity of the form $\exp[-(const)h^{-D/3}]$ (where 1
description: 14 pages, 3 figures
Position-specific reference data for an ice hockey-specific complex test : an update and practical recommendations
Creators: name: Schulze, Stephan
name: Laudner, Kevin G.
name: Delank, Karl-Stefan
name: Bartels, Thomas
name: Marshall, Robert Percy
name: Schwesig, René
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2024
Subjects: subject: 610

description: This real-life data collection aimed to expand an existing reference database regarding an extensively evaluated ice hockey-specific complex test (IHCT). One hundred and thirty-eight third-league professional ice hockey field players (mean ± SD; age: 26.4 ± 5.24 years; forwards: n = 94, defenders: n = 44) were investigated. IHCT data were collected over eight seasons from three third-league teams. The IHCT included parameters for the load (e.g., 10 m and 30 m sprint times, transition and weave agility times with and without a puck, slap and wrist shots on goal) and stress (e.g., lactate, heart rate). The only relevant (p < 0.002, ηp2 ≥ 0.10) difference between forwards and defenders for performance was found for 30 m backward sprint without a puck (p < 0.001, ηp2 = 0.10, d = 0.74). As expected, in this regard, defenders performed better than forwards. Significant differences were also found in 10 m backward sprint without a puck (p = 0.005), weave agility with a puck (p = 0.014), heart rate recovery minute 10 (p = 0.057), and goals after the test (p = 0.041). This study provides expanded position-specific third-league reference data for the IHCT. On this basis, coaches are able to evaluate players’ performance (forwards vs. defenders) and the effect of the training periods. Further research is necessary to extend this database to first- and second-league players in order to enhance the scope of the IHCT.
Collision centrality determination in the CBM experiment
Creators: name: Seddiki, S.
name: Golubeva, M.
name: Kugler, A.
name: Mikhaylov, V.
name: Selyuzhenkov, I.
name: Tlusty, P.
Publisher: name: GSI Helmholtzzentrum fuer Schwerionenforschung, Darmstadt
Year: 2015
Subjects: Physics

description: GSI Scientific Report 2014 - GSI Report 2015-1
Elongation of Very Long-Chain Fatty Acids (ELOVL) in atopic dermatitis and the cutaneous adverse effect AGEP of drugs
Creators: name: Blaess, Markuss
name: Csuk, René
name: Volk, Teresa
name: Deigner, Hans-Peter
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2024
Subjects: subject: 540

description: Atopic dermatitis (AD) is a common inflammatory skin disease, in particular among infants, and is characterized, among other things, by a modification in fatty acid and ceramide composition of the skin’s stratum corneum. Palmitic acid and stearic acid, along with C16-ceramide and 2-hydroxy C16-ceramide, occur strikingly in AD. They coincide with a simultaneous decrease in very long-chain ceramides and ultra-long-chain ceramides, which form the outermost lipid barrier. Ceramides originate from cellular sphingolipid/ceramide metabolism, comprising a well-orchestrated network of enzymes involving various ELOVLs and CerSs in the de novo ceramide synthesis and neutral and acid CERase in degradation. Contrasting changes in long-chain ceramides and very long-chain ceramides in AD can be more clearly explained by the compartmentalization of ceramide synthesis. According to our hypothesis, the origin of increased C16-ceramide and 2-hydroxy C16-ceramide is located in the lysosome. Conversely, the decreased ultra-long-chain and very long-chain ceramides are the result of impaired ELOVL fatty acid elongation. The suggested model’s key elements include the lysosomal aCERase, which has pH-dependent long-chain C16-ceramide synthase activity (revaCERase); the NADPH-activated step-in enzyme ELOVL6 for fatty acid elongation; and the coincidence of impaired ELOVL fatty acid elongation and an elevated lysosomal pH, which is considered to be the trigger for the altered ceramide biosynthesis in the lysosome. To maintain the ELOVL6 fatty acid elongation and the supply of NADPH and ATP to the cell, the polyunsaturated PPARG activator linoleic acid is considered to be one of the most suitable compounds. In the event that the increase in lysosomal pH is triggered by lysosomotropic compounds, compounds that disrupt the transmembrane proton gradient or force the breakdown of lysosomal proton pumps, non-HLA-classified AGEP may result.
Rennstich, Karl: Handwerker-Theologen und Industriebrüder als Botschafter des Friedens
Creators: name: Vo.
Publisher: name: Ökumenische Rundschau
Year: 2025

description: Ökumenische Rundschau, Bd. 35 Nr. 2 (1986): Ökumenische Rundschau, Band 35, Heft 2
Nonuniversal routes to universality: Critical phenomena in colloidal dispersions
Creators: name: Pini, D.
name: Verso, F. Lo
name: Tau, M.
name: Parola, A.
name: Reatto, L.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We investigate critical phenomena in colloids by means of the renormalization-group based hierarchical reference theory of fluids (HRT). We focus on three experimentally relevant model systems: namely, the Asakura-Oosawa model of a colloidal dispersion under the influence of polymer-induced attractive depletion forces; fluids with competing short-range attractive and longer-range repulsive interactions; solutions of star-polymers whose pair potential presents both an attractive well and an ultrasoft repulsion at shorter distance. Our results show that the ability to tune the effective interactions between colloidal particles allows one to generate a variety of crossovers to the asymptotic critical behavior, which are not observed in atomic fluids.
description: 4 pages, 3 figures
Gender, modernity and the nation in Malaysian literature and film (1980s and 1990s)
Creators: name: Khoo, Gaik Cheng
Publisher: name: University of British Columbia
Year: 2009

description: This dissertation examines the impact of modernity, in the form of modernization, rapid industrialization and the introduction of Western ideas about nationalism and female emancipation, on gender and gender relations in contemporary Malaysian film and literature. Drawing upon theories ranging from Lacanian psychoanalysis, feminism, postcolonialism, nationalism, existentialism to theories about fascism, I examine and critique the representations of gender from the predominantly middle-class writers and the works of the new wave Malay filmmakers. I make the case that these films and literary works reflect the outcome of the National Economic Policy (1971-1990) and, in my analyses, show that these modernizing imperatives, though received positively, are sometimes greeted with a cautionary ambivalence, depending on one's class, gender, ethnicity, and political and religious beliefs. Such ambivalence towards feminism, for example, appears in K.S. Maniam's portrayal of independent female characters, whom I call "fascist 'feminists'," or in the representations of hypermasculinity or male violence in current Malay cinema. Films and literature by some Malays reflect a desire to recover Malay custom, adat, while forging a unique, modern, postcolonial identity that distinguishes itself from the West, other former British colonies and other Muslim nations. However, this subversive postcolonial move must be treated with caution to ensure that it does not replicate prevalent negative stereotypes of women as sexualised beings. A key distinction in this dissertation is that the representations of the modern Malay woman vary according to the gender of the cultural producer: male writers and filmmakers portray the negative impact of modernity on women, whereas their female counterparts portray women at ease with modernity.
Measurement Induced Dephasing and Suppression of Persistent Current in a Lattice Ring
Creators: name: Zhang, Yong-Ping
name: Gao, Ying-Fang
name: Liang, J. -Q.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate the effect of measurement on the persistent current density in a lattice ring penetrated by an Aharonov-Bohm flux and coupled to a quantum dot which is continuously monitored by a point contact detector. It is demonstrated by explicit analysis of the time-evolution of current density that the persistent current in the lattice ring is suppressed completely due to dephasing of quantum states induced by an analogous which-way-measurment that whether or not the electron is localized on the quantum dot. Practical experiments to observe the measurment induced dephasing is proposed.
description: 4 pages, 5 figures
Statistics of the Spectral Form Factor in the Self-Dual Kicked Ising Model
Creators: name: Flack, Ana
name: Bertini, Bruno
name: Prosen, Tomaz
Publisher: name: arXiv
Year: 2020
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We compute the full probability distribution of the spectral form factor in the self-dual kicked Ising model by providing an exact lower bound for each moment and verifying numerically that the latter is saturated. We show that at large enough times the probability distribution agrees exactly with the prediction of Random Matrix Theory if one identifies the appropriate ensemble of random matrices. We find that this ensemble is not the circular orthogonal one - composed of symmetric random unitary matrices and associated with time-reversal-invariant evolution operators - but is an ensemble of random matrices on a more restricted symmetric space (depending on the parity of the number of sites this space is either ${Sp(N)/U(N)}$ or ${O(2N)/{O(N)\!\times\!O(N)}}$). Even if the latter ensembles yield the same averaged spectral form factor as the circular orthogonal ensemble they show substantially enhanced fluctuations. This behaviour is due to a recently identified additional anti-unitary symmetry of the self-dual kicked Ising model.
description: 14 pages, 4 figures
Normative manipulation as a way of improving the performance of software engineering groups : three experiments
Creators: name: Teh, Chin Hao Alvin
Publisher: name: The Australian National University
Year: 2012
Subjects: subject: QA76.758.T44 2012
subject: Software engineering Psychological aspects
subject: Teams in the workplace
subject: Performance
subject: Project management

description: As the size of Software development projects increase, so too do the number of people working on these projects. This increase of software groups have brought about a new focus on the sociological issues associated with Software Development. There is a growing body of work that seeks to understand how Software Engineers work together effectively as a group, and also to identify factors that enable increased productivity consistently. Social Psychology looks at the interactions between individuals in groups (group dynamics) and may provide an applicable means to address this increased need for enhanced group effectiveness in Software Engineering. The thesis of this research is that it is possible to apply Social Psychology research (in particular Normative Manipulation) to Software Engineering groups. It is possible to use Normative Manipulation effectively to increase the performance of Software Engineering groups in some types of tasks, and finally, this technique is adoptable by practising Software Engineering groups as it is non-intrusive. Normative Manipulation is a technique in which particular behaviours are made to be favoured by group members. This behaviour is then actively practised by all group members. These particular behaviours may in turn increase the effectiveness of groups on particular tasks - for instance, a group favouring the behaviour of objectivity would then be more inclined to assess provided on information its logical merits and may then in turn be more likely to uncover other related, but less obvious information. Since the success of elicitation and specification of Software Requirements is related to how complete the produced specification is, then it follows that such a group could possibly have increased performance in Software Elicitation and Specification tasks. We demonstrate the validity of the thesis claims by performing three studies. The first study attempts to replicate the results of a Social Psychology experiment on a sample of participants drawn from a Software Engineering population. The second study attempts to show that it is possible to affect the effectiveness of Requirements Elicitation by Software Engineering groups by instilling different norms. The third study applies Normative Manipulation on a practising Software Group to identify if the technique can be applied transparently as part of a normal Requirements Elicitation task. -- provided by Candidate.
Dissecting the size-mass and $Σ_1$-mass relations at 1.0 < z < 2.5: galaxy mass profiles and color gradients as a function of spectral shape
Creators: name: Suess, Katherine A.
name: Kriek, Mariska
name: Price, Sedona H.
name: Barro, Guillermo
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We study how half-mass radii, central mass densities ($Σ_1$), and color gradients change as galaxies evolve. We separate $\sim7,000$ galaxies into sixteen groups with similar spectral shapes; each group represents a different evolutionary stage. We find that different galaxy types populate different regions of both size-mass and $Σ_1$-mass space. The nine star-forming groups lie along the integrated star-forming $Σ_1$-mass relation. However, these star-forming groups form steep parallel relations in the size-mass plane, with slopes similar to the quiescent size-mass relation. These steep slopes can be explained as a transformation of the star-forming $Σ_1$-mass relation and its scatter. We identify three types of transitional galaxies. Green valley and post-starburst galaxies are similarly compact at $z>1.5$; however, their distinct color gradients indicate that the two populations represent different pathways to quenching. Post-starburst galaxies have flat color gradients and compact structures, consistent with a fast quenching pathway which requires structural change and operates primarily at high redshift. Green valley galaxies have negative color gradients, and are both larger and more numerous towards lower redshift. These galaxies are consistent with slow quenching without significant structural change. We find that dusty star-forming galaxies at $z\gtrsim2$ are very compact, and may represent the "burst" before post-starburst galaxies; at $z\lesssim2$, dusty star-forming galaxies are extended and have shallow color gradients consistent with slow quenching. Our results suggest that star-forming galaxies grow gradually up the \sig-mass relation until (a) they naturally reach the high $Σ_1$ values required for quiescence, or (b) a compaction-type event rapidly increases their $Σ_1$.
description: 27 pages, 13 figures, accepted to ApJ. Key results in Figures 10, 11, 12
Chandra observation of the fast X-ray transient IGR J17544-2619: evidence for a neutron star?
Creators: name: Zand, J. J. M. in 't
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: IGR J17544-2619 belongs to a distinct group of at least seven fast X-ray transients that cannot readily be associated with nearby flare stars or pre-main sequence stars and most probably are X-ray binaries with wind accretion. Sofar, the nature of the accretor has been determined in only one case (SAX J1819.3-2525/V4641 Sgr). We carried out a 20 ks Chandra ACIS-S observation of IGR J17544-2619 which shows the source in quiescence going into outburst. The Chandra position confirms the previous tentative identification of the optical counterpart, a blue O9Ib supergiant at 3 to 4 kpc (Pellizza, Chaty & Negueruela, in prep.). This is the first detection of a fast X-ray transient in quiescence. The quiescent spectrum is very soft. The photon index of 5.9+/-1.2 (90% confidence error margin) is much softer than 6 quiescent black hole candidates that were observed with Chandra ACIS-S (Kong et al. 2002; Tomsick et al. 2003). Assuming that a significant fraction of the quiescent photons comes from the accretor and not the donor star, we infer that the accretor probably is a neutron star. A fit to the quiescent spectrum of the neutron star atmosphere model developed by Pavlov et al. (1992) and Zavlin et al. (1996) implies an unabsorbed quiescent 0.5--10 keV luminosity of (5.2+/-1.3) x 10^32 erg/s. We speculate on the nature of the brief outbursts.
description: accepted for publication in Astronomy & Astrophysics
Planetary Nebulae as Mass Tracers in Galaxies
Creators: name: Romanowsky, Aaron J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Planetary nebula are useful kinematic tracers of the stars in all galaxy types. I review recent observationally-driven developments in the study of galaxy mass profiles. These have yielded surprising results on spiral galaxy disk masses and elliptical galaxy halo masses. A key remaining question is the coupling between PNe and the underlying stellar populations.
description: 8 pages, 4 figs, invited review to appear in Proc. IAU Symp. 234, Planetary Nebulae in Our Galaxy and Beyond (3-7 Apr 2006), eds. M.J. Barlow & R.H. Mendez (Cambridge Univ. Press)
Antibacterial nanoplatelets via crystallization-driven self-assembly of poly(l-lactide)-based block copolymers
Creators: name: Alsawaf, Ahmad
name: Lehnen, Anne-Catherine
name: Dolynchuk, Oleksandr
name: Bapolisi, Alain M.
name: Beresowski, Christina
name: Böker, Alexander
name: Bald, Ilko
name: Hartlieb, Matthias
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2024
Subjects: subject: 530

description: Membrane-active antimicrobial materials are promising substances to fight antimicrobial resistance. Herein, crystallization-driven self-assembly (CDSA) is employed for the preparation of nanoparticles with different morphologies, and their bioactivity is explored. Block copolymers (BCPs) featuring a crystallizable and antimicrobial block were synthesized using a combination of ring-opening and photoiniferter RAFT polymerizations. Subsequently formed nanostructures formed by CDSA could not be deprotected without degradation of the structures. CDSA of deprotected BCPs yielded 2D diamond-shaped nanoplatelets in MeOH, while spherical nanostructures were observed for assembly in water. Platelets exhibited improved antibacterial capabilities against two Gram-negative bacteria (Escherichia coli and Pseudomonas aeruginosa) compared to their spherical counterparts. The absence of hemolytic activity leads to the excellent selectivity of platelets. A mechanism based on membrane permeabilization was confirmed via dye-leakage assays. This study emphasized the impact of the shape of nanostructures on their interaction with bacterial cells and how a controlled assembly can improve bioactivity.
Thin shells in (2+1)-dimensional F(R) gravity
Creators: name: Eiroa, Ernesto F.
name: Figueroa-Aguirre, Griselda
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study thin shells of matter in (2+1)-dimensional F(R) theories of gravity with constant scalar curvature R. We consider a wide class of spacetimes with circular symmetry, in which a thin shell joins an inner region with an outer one. We analyze the stability of the static configurations under radial perturbations. As examples of spacetimes asymptotically anti-de Sitter, we present a charged bubble and a charged thin shell surrounding a non-charged black hole. In both cases, we show that stable solutions can be found for suitable values of the parameters.
description: 14 pages, 4 figures; v2: minor changes, new references added
Proton pump inhibitor prescription in nursing home residents : prevalence, appropriateness, and associated factors - a secondary data analysis from three German regions and the impact of guideline recommendations
Creators: name: Wolf, Ursula
name: Wegener, Martina
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2024
Subjects: subject: 610

description: Despite reliable evidence of adverse drug effects, the substantially increased prescription rates of proton pump inhibitors (PPIs) remain at a high level. This study analyzed the appropriateness of PPI prescriptions among residents of nursing homes in three regions of Germany. Baseline data of a cluster-randomized controlled trial were used to determine the prevalence of PPI prescriptions, the validity of indications, and the adequacy of the prescribed dosages according to 1. their drug approvals and 2. valid recommendation guidelines. Regression analyses were conducted to assess associated factors. A total of 437 residents in 37 nursing homes were included (mean age 83 ± 9.2 years, 72% women). The PPI prescription prevalence was 44% (n = 193). In 52/193 (27%) there was no adequate indication, and in 54 (39%) of 138 indicated PPI prescriptions it was overdosed. Yet, in only less than one-third (28%) of “adequate” prescriptions, the indication was according to the PPI approvals, whereas the majority (72%) were off-label indications in line with valid guideline recommendations. Non-indicated PPI prescription was associated with the total number of prescribed drugs (OR 1.32; 95% CI 1.18–1.62; p = 0.013). There were no associations with age, level of care dependency, cognitive impairment, prescription of psychotropic drugs, number of chronic diseases, number of physicians’ consultations, or study region. To conclude, in 55%, the high prescription prevalence among residents was either not indicated or overdosed. In total, only 20% (39/193) of cases of PPI use complied with the approved indications. There is a need for quality control of 1. PPI administration in German nursing homes, and 2. of guideline recommendations expanding the off-label PPI use by 72% within the indication scale, predominantly from wide prescription for low-dose ASA.
Australia’s Same-sex Marriage Survey: Evaluating a Unique Popular Vote Process
Creators: name: Kildea, Paul
Publisher: name: Monash University
Year: 2021
Subjects: subject: Law
subject: FOS: Law

description: In 2017, the Australian government conducted the Australian Marriage Law Postal Survey (‘AMLPS’). This saw the federal government make innovative use of national survey processes to conduct an exercise that closely resembled an advisory referendum or plebiscite. This article views the marriage survey as a type of ‘popular vote process’ and uses the conceptual tools of referendum research to understand and evaluate it from a process perspective. The article begins by examining the legal framework that applied to the AMLPS and highlights how it differed from the laws that apply to referendums and plebiscites. Next, the article evaluates the AMLPS as a popular vote process. While acknowledging that the survey delivered some important democratic benefits, it offers a mostly critical assessment. The analysis identifies several shortcomings, including insufficient checks on the power of the executive to initiate the survey, gaps in legal regulation, inadequate protection of ballot secrecy, the absence of a mechanism to challenge the result, and questions around the effectiveness of administration. The article concludes that the survey device should not be used as the basis for future popular votes on policy issues.
Controlled turbulence regime of electron cyclotron resonance ion source for improved multicharged ion performance
Creators: name: Skalyga, V. A.
name: Izotov, I. V.
name: Shalashov, A. G.
name: Gospodchikov, E. D.
name: Kiseleva, E. M.
name: Tarvainen, O.
name: Koivisto, H.
name: Toivanen, V.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: Fundamental studies of excitation and non-linear evolution of kinetic instabilities of strongly nonequlibrium hot plasmas confined in open magnetic traps suggest new opportunities for fine-tuning of conventional electron cyclotron resonance (ECR) ion sources. These devices are widely used for the production of particle beams of high charge state ions. Operating the ion source in controlled turbulence regime allows increasing the absorbed power density and therefore the volumetric plasma energy content in the dense part of the discharge surrounded by the ECR surface, which leads to enhanced beam currents of high charge state ions. We report experiments at the ECR ion source at the JYFL accelerator laboratory, in which adopting of a new approach allows to increase the multicharged ion beam current up to two times, e.g. to 95 $μ$A of O$^{7+}$ achieved with mere 280 W power at 11.56 GHz. A theoretical model supporting and explaining the experimental findings is presented. The study suggests that the controlled turbulence regime has the potential to enhance the beam currents of modern high-performance ion sources, including state-of-the-art superconducting devices.
description: Submitted to Plasma Sources Sci. Tech
Australia’s Same-sex Marriage Survey: Evaluating a Unique Popular Vote Process (Advance)
Creators: name: Kildea, Paul
Publisher: name: Monash University
Year: 2021
Subjects: subject: Law
subject: FOS: Law

description: In 2017, the Australian government conducted the Australian Marriage Law Postal Survey (‘AMLPS’). This saw the federal government make innovative use of national survey processes to conduct an exercise that closely resembled an advisory referendum or plebiscite. This article views the marriage survey as a type of ‘popular vote process’ and uses the conceptual tools of referendum research to understand and evaluate it from a process perspective. The article begins by examining the legal framework that applied to the AMLPS and highlights how it differed from the laws that apply to referendums and plebiscites. Next, the article evaluates the AMLPS as a popular vote process. While acknowledging that the survey delivered some important democratic benefits, it offers a mostly critical assessment. The analysis identifies several shortcomings, including insufficient checks on the power of the executive to initiate the survey, gaps in legal regulation, inadequate protection of ballot secrecy, the absence of a mechanism to challenge the result, and questions around the effectiveness of administration. The article concludes that the survey device should not be used as the basis for future popular votes on policy issues.
HST/WFPC2 Color-Magnitude Diagrams for Globular Clusters in M31
Creators: name: Rich, R. M.
name: Corsi, C. E.
name: Cacciari, C.
name: Federici, L.
name: Pecci, F. Fusi
name: Djorgovski, S. G.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report new HST/WFPC2 photometry for 10 globular clusters (GC) in M31 observed in F5555W(V) and F814W(I). Additionally we have reanalyzed HST archival data of comparable quality for 2 more GCs. Extraordinary care is taken to account for the effects of blended stellar images and required field subtraction. We thus reach 1 mag fainter than the horizontal branch (HB) even in unfavorable cases. We present the color-magnitude diagrams (CMDs) and discuss their main features also in comparison with the properties of the Galactic GCs. This analysis is augmented with CMDs previously obtained and discussed by Fusi Pecci et al. (1996) on 8 other M31 clusters. We report the following significant results: 1. The locus of the red giant branches give reliable metallicity determinations which compare generally very well with ground-based integrated spectroscopic and photometric measures, as well as giving good reddening estimates. 2. The HB morphologies show the same behavior with metallicity as the Galactic GCs, with indications that the 2nd-parameter effect can be present in some GCs of our sample. However, at [Fe/H] ~ -1.7 we observe a number of GCs with red HB morphology such that the HB type versus [Fe/H] relation is offset from the MW and resembles that of the Fornax dwarf spheroidal galaxy. One explanation for the offset is that they are younger than their MW counterparts by 1-2 Gyr. 3. The Mv(HB)-[Fe/H] relationship has been determined and the slope (~0.20) is very similar to the values derived from RR Lyrae stars in the MW and the LMC. The zero-point of this relation based on the assumed distance modulus (m-M)o(M31)=24.47+/-0.03 is consistent with (m-M)o(LMC)=18.55.
description: 50 pages, 12 figures (one in jpeg format), 8 tables, accepted for publication in The AJ
Anisotropic flow and reaction plane reconstruction with the CBM experiment
Creators: name: Mikhaylov, V.
name: Golubeva, M.
name: Kugler, A.
name: Kushpil, V.
name: Seddiki, S.
name: Selyuzhenkov, I.
name: Tlusty, P.
Publisher: name: GSI Helmholtzzentrum fuer Schwerionenforschung, Darmstadt
Year: 2015
Subjects: Physics

description: GSI Scientific Report 2014 - GSI Report 2015-1
One the development of a professional mandate by social workers in medical rehabilitation : key results from the SWIMMER Project
Creators: name: Knoop, Tobias
name: Freymüller, Nadja
name: Dettmers, Stephan
name: Meyer-Feil, Thorsten
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2024
Subjects: subject: 610

description: Social work in the German rehabilitation sector is practiced with great variation and its interventions lack research evidence. The SWIMMER project aims to develop a program theory of social work in rehabilitation to explain this variation and to discuss possible conditions. The dealing with ethical dilemmas by social workers is one possible influence and the focus of this paper. The social workers’ practice was analyzed using the triple mandate, a German-Swiss concept that describes three possible, sometimes simultaneous directives without a concrete call to action from society, the client or the profession. This qualitative, case-comparative research project collected data from interviews with social workers and managers, participant observation and counseling sessions in ten German rehabilitation facilities. Social workers were confronted with all three mandates. They prioritized either the societal mandate or the client mandate. A consequence for social work practice was the limitation of options under social law (mandate by society). Social workers relied on their professional experience to reflect on the mandates. They used a variety of strategies when faced with conflicting mandates. The research project has succeeded in systematizing the orientations of social workers in goal conflicts. Further investigation on this topic on a broader basis would be beneficial.
Propagator of a Charged Particle with a Spin in Uniform Magnetic and Perpendicular Electric Fields
Creators: name: Cordero-Soto, Ricardo
name: Lopez, Raquel M.
name: Suazo, Erwin
name: Suslov, Sergei K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We construct an explicit solution of the Cauchy initial value problem for the time-dependent Schroedinger equation for a charged particle with a spin moving in a uniform magnetic field and a perpendicular electric field varying with time. The corresponding Green function (propagator) is given in terms of elementary functions and certain integrals of the fields with a characteristic function, which should be found as an analytic or numerical solution of the equation of motion for the classical oscillator with a time-dependent frequency. We discuss a particular solution of a related nonlinear Schroedinger equation and some special and limiting cases are outlined.
description: 17 pages, no figures
The GBT based readout concept for the CBM Silicon Tracking System
Creators: name: Lehnert, J.
name: Müller, W. F. J.
name: Schmidt, C. J.
Publisher: name: GSI Helmholtzzentrum fuer Schwerionenforschung, Darmstadt
Year: 2015
Subjects: Physics

description: GSI Scientific Report 2014 - GSI Report 2015-1