cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Documenting your Teaching: A Guide to Promote Reflective and Responsive Instruction
Creators: name: Spicer-Escalante, María Luisa
name: Read, Sylvia
Publisher: name: Utah State University
Year: 2022

description: Access the online Pressbooks version of this article here.
Why is teaching documentation so important right now in the educational context? In the United States, teaching, along with research and service, is a crucial component of someone’s professional profile in academia. As part of the review process for faculty reappointment or promotion, most institutions require evidence of effective teaching. This article provides key guidelines for how faculty can collect, explain, and showcase their impact and potential as effective instructors in their teaching dossiers or portfolios. Teaching dossiers are based on three main components: materials from oneself, materials from others, and products of good teaching and student learning (Seldin et al, 2010). This article also discusses some strategies that teachers may use to document their teaching, such as journaling and self-assessment and collaborative assessment (Farrell, 2013, 2018, 2019; Spicer-Escalante & Kannan, 2016). The guidelines and resources outlined in this article are supported by ten years of experience in assisting colleagues from different disciplines to write their teaching documentation and assemble the evidence to support their claims. We share the model that we have successfully used in a mentoring program within a university context. We conclude that only by documenting our teaching efforts and thinking about them will we be able to begin our path toward a more reflective and responsive practice in our classrooms.
SHAPE Project: CFD calculations for side-by-side (SBS) propulsion
Creators: name: S. Lais
name: B. Semlitsch
Publisher: name: Zenodo
Year: 2023
Subjects: SHAPE
White Paper

description: Water depths become forbiddingly shallow to allow ship traffic in connection rivers. Propellers can damage by interacting with the riverbed under low water conditions because they are designed with the largest possible diameter for efficiency reasons. Two propellers can replace a single propeller to reduce the penetration depth of the propulsion system, with the same propeller disk area delivering similar amounts of thrust. The optimal configuration of such twin-propeller propulsion systems arranged side-by-side is investigated by computational methods simulating the flow in this project. A numerical methodology that can handle the turbulent and multiphase nature of the flow around propellers has been established. Tight side-by-side arrangements are needed to enable possible compensation of the efficiency losses due to the propeller diameter reductions by flow structure interactions. The small gaps between propellers enforced the application of the overset approach to handle rotating geometries. The accuracy of this approach is governed by the careful mesh design in the interpolation region. The application of a shell/nozzle enclosing the side-by-side propellers has been investigated. The flow interaction between the propellers shall be steered such that part of the swirling flow energy is redirected in the heading direction and generates thrust. Thereby, the performed simulations could deepen the knowledge of nozzle design for twin-propeller configurations.
Device-independent quantification of measurement incompatibility
Creators: name: Chen, Shin-Liang
name: Miklin, Nikolai
name: Budroni, Costantino
name: Chen, Yueh-Nan
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: Quantum correlations in quantum information
subject: Quantum measurements
subject: Quantum nonlocality
subject: 500 Naturwissenschaften und Mathematik::530 Physik::530 Physik

description: Incompatible measurements, i.e., measurements that cannot be simultaneously performed, are necessary to observe nonlocal correlations. It is natural to ask, e.g., how incompatible the measurements have to be to achieve a certain violation of a Bell inequality. In this paper, we provide the direct link between Bell nonlocality and the quantification of measurement incompatibility. This includes quantifiers for both incompatible and genuine-multipartite incompatible measurements. Our method straightforwardly generalizes to include constraints on the system's dimension (semi-device-independent approach) and on projective measurements, providing improved bounds on incompatibility quantifiers, and to include the prepare-and-measure scenario.
Economic potentials of ginger value chain in Kaduna State, Nigeria
Creators: name: Olaghere, Ivie Loretta
name: Osasona, Kehinde Kikelomo
name: Omotesho, Olubunmi Abayomi
name: Ifeoluwa, Temilade Adesina
name: Olaghere, Ivie Loretta
name: Osasona, Kehinde Kikelomo
name: Omotesho, Olubunmi Abayomi
name: Ifeoluwa, Temilade Adesina
Publisher: name: Unknown
Year: 2022
Subjects: subject: Agricultural and Food Policy
subject: Crop Production/Industries
subject: Agriculture
subject: ginger
subject: Jaba
subject: partial budgeting
subject: return to capital

description: Without a doubt, ginger is an important commercial crop which significantly contribute nutritionally, pharmaceutically and medically. Unfortunately, the producers, processors, and marketers have been given little attention, especially regarding the empirical profitability associated with each activity. This study, therefore, sought to estimate the net margins of the actors and compare their profitability. A total of 380 ginger producers, processors, and marketers were randomly selected from Jaba local government area in Kaduna state. Data were collected using pretested semi-structured questionnaires. Partial budgeting techniques and the one-way analysis of variance were used. The study revealed a net margin of about 140,000 NGN/ha/annum for the producers, while the net marketing margin/bag for the ginger processors and marketers was 3,300 NGN and 3,470 NGN, respectively. Furthermore, the profitability indices showed that the producers, processors, and marketers earned about 37%, 70%, and 41% profit of invested funds in the ginger value chain. Comparative analysis revealed that the profitability of the processors, which was the highest, was statistically different from the other actors. It is concluded that there exist tremendous economic potentials in the ginger value chain. It is, therefore, recommend that policies that will encourage ginger production, processing, and marketing should be implemented with particular emphasis on the processing aspect.
title: Student Stories of Online Learning
Creators: name: Miller, Carrie Lewis
name: Manderfeld, Michael
Publisher: name: Utah State University
Year: 2022

description: Access the online Pressbooks version of this article here.
Instructional designers at a Midwest university piloted a survey based on the Quality Matters general standards asking students about their online course experience prior to the COVID-19 pandemic. Students were asked to indicate whether they experienced a specific course design element and whether they considered that element to be important to their learning experience. Follow-up interviews with some participants were also held. Data from the survey indicated students perceive their online course experience to be good based on course design elements they encountered. Implications for providing additional faculty development programming based on the results of the study are discussed.
Microscopic study of the string breaking in QCD
Creators: name: Badalian, A. M.
name: Orlovsky, V. D.
name: Simonov, Yu. A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Theory of strong decays defines in addition to decay widths, also the channel coupling and the mass shifts of the levels above the decay thresholds. In the standard decay models of the 3P0 type the decay vertex is taken to be a phenomenological constant "gamma" and such a choice leads to large mass shifts of all meson levels due to real and virtual decays, the latter giving a divergent contribution. Here we show that taking the microscopic details of decay vertex into account, one obtains new string width coefficient, which strongly suppresses virtual decay contribution. In addition for a realistic space structure of the decay vertex of highly excited states, the decay matrix elements appear to be strongly different from those, where the constant "gamma" is used. From our analysis also follows that so-called flattening potential can imitate the effects of intermediate decay channels.
description: 21 pages, 8 figures, typos corrected, to be published in Phys.Atom.Nucl
Eid und Wahrheitssuche. Studien zu rechtlichen Befragungspraktiken in Mittelalter und früher Neuzeit, éd. S. Esders et T. Scharff, 1999
Creators: name: Stoclet, A. J.
Publisher: name: Francia
Year: 2019

description: Francia, Bd. 28 Nr. 1 (2001)
F. Brendle, A. Schindling (Hg.), Márta Fata. Ungarn, das Reich der Stephanskrone im Zeitalter der Reformation und Konfessionalisierung. Multiethnizität, Land und Konfession 1500 bis 1700, 2000
Creators: name: Michaud, C.
Publisher: name: Francia
Year: 2019

description: Francia, Bd. 28 Nr. 2 (2001)
title: Reflection Impacts Preservice Teachers Instruction and Planning
Creators: name: Weaver, Joanna C
name: Bertelsen, Cynthia
name: Othman, Kaylani
Publisher: name: Utah State University
Year: 2022

description: Access the online Pressbooks version of this article here.
Creating a habit of reflective practice promotes ongoing and sustainable instructional improvement for preservice teachers. Furthermore, reflection enables teachers to strengthen their instruction through critical analysis of student learning and engagement. While reflection may be intuitive for an in-service teacher, preservice teachers need this experience to develop intentional and automatic reflective practice. Adopted from the field of medicine, Subjective, Observation, Assessment, Planning (SOAP) Notes is a reflective strategy that allows educators to critically reflect on the lessons they have taught. SOAP Notes promote critical reflection on planning and student learning and may impact classroom management and instructional decision-making.
Magnetostriction and exchange effects in trapped dipolar Bose and Fermi gases
Creators: name: Baillie, D.
name: Blakie, P. B.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We examine the magnetostrictive position and momentum space distortions that occur in harmonically confined dipolar Bose and Fermi gases. Direct interactions give rise to position space magnetostriction and exchange interactions give rise to momentum space magnetostriction. While the position space magnetostriction is similar in Bose and Fermi systems, the momentum space magnetostriction is markedly different: the Bose gas momentum distribution distorts in the opposite sense to that of the Fermi gas. By relating exchange effects to short range correlations between the particles we discuss the energetic origin of this difference. Our main calculations are based on Hartree-Fock theory, but we also provide analytic approximations for the magnetostriction effects at zero and finite temperature. Our predictions should be verifiable in current experiments with ultra-cold polar molecules.
description: 7 pages, 4 figures
Carbon dot/TiO2 nanocomposites as photocatalysts for metallaphotocatalytic carbon–heteroatom cross-couplings
Creators: name: Zhao, Zhouxiang
name: Reischauer, Susanne
name: Pieber, Bartholomäus
name: Delbianco, Martina
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: Carbon dots
subject: titanium dioxide
subject: photocatalysts
subject: 500 Naturwissenschaften und Mathematik::540 Chemie::540 Chemie und zugeordnete Wissenschaften

description: Carbon dots have been previosly immobilized on titanium dioxide to generate photocatalysts for pollutant degradation and water splitting. Here we demonstrate that these nanocomposites are valuable photocatalysts for metallaphotocatalytic carbon–heteroatom cross-couplings. These sustainable materials show a large applicability, high photostability, excellent reusability, and broadly absorb across the visible-light spectrum.
title: Examining Math Instructors’ Knowledge, Beliefs, and Attitudes of Student Learning Strategies in a Faculty Development Workshop
Creators: name: Brinkerhoff, Roxanne
name: Connelly, Becky
name: Gedeborg, Sam
Publisher: name: Utah State University
Year: 2022

description: Access the online Pressbooks version of this article here.
A faculty development workshop, focused on incorporating universal learning strategies into developmental mathematics courses, was created and utilized in a developmental mathematics department at an open-enrollment, mid-western university to ascertain the best methods for dissemination of essential learning strategies to developmental math students. Successful faculty development programs were studied and utilized in the design of the workshop. The attributes of the workshop were discussed. Faculty were surveyed and qualitative data was analyzed to determine the workshop’s efficacy. The research aimed to understand if participation in the workshop changed faculty knowledge, beliefs, and attitudes in the following areas: (a) willingness to include learning strategies during class time; (b) knowledge of learning strategies and the effect of those strategies on students; and (c) application of the learning strategies into their courses. Pre- and post-workshop surveys were given to instructors measuring their knowledge of learning strategies, application of these strategies in their courses, and willingness to incorporate learning strategies into their pedagogy. In the workshop, instructors participated in discussion boards and set goals. The researchers analyzed the discussions and goal statements using thematic coding. The participants’ comments revealed that, while the workshop changed all participants’ knowledge of learning strategies and potentially changed all participants’ attitudes and beliefs, the extent of the change in attitudes and beliefs depended upon the pre-workshop mindset of the instructor.
On a radical democratic theory of political protest: potentials and shortcomings
Creators: name: Volk, Christian
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: Political protest
subject: constitutionalism
subject: radical democratic theory
subject: social movements
subject: depoliticization
subject: 300 Sozialwissenschaften::320 Politikwissenschaft::320 Politikwissenschaft

description: The increasing number of protest activities urges political and social philosophers to analyze the meaning and function of protest in modern democracy. Its focus on conflictive social relations makes radical democratic theory the most promising approach currently at hand for such an endeavor. It allows us to comprehend today's form of protest as a critique of the current shape of modern democratic order (and not as interest politics or as a struggle for rights). Accordingly, radical democratic theory has established itself in academic discourses and is widely and well received by political activists. Notwithstanding its critical potential, I argue that radical democratic thought is not in a position to conceptually grasp the differentia specifica of a democratic order and to sufficiently determine the meaning of protest for democracy. A democratic and social theory of political protest in modern democracies is, therefore, still waiting to be developed.
Information-theoretic equilibration: the appearance of irreversibility under complex quantum dynamics
Creators: name: Ududec, Cozmin
name: Wiebe, Nathan
name: Emerson, Joseph
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: The question of how irreversibility can emerge as a generic phenomena when the underlying mechanical theory is reversible has been a long-standing fundamental problem for both classical and quantum mechanics. We describe a mechanism for the appearance of irreversibility that applies to coherent, isolated systems in a pure quantum state. This equilibration mechanism requires only an assumption of sufficiently complex internal dynamics and natural information-theoretic constraints arising from the infeasibility of collecting an astronomical amount of measurement data. Remarkably, we are able to prove that irreversibility can be understood as typical without assuming decoherence or restricting to coarse-grained observables, and hence occurs under distinct conditions and time-scales than those implied by the usual decoherence point of view. We illustrate the effect numerically in several model systems and prove that the effect is typical under the standard random-matrix conjecture for complex quantum systems.
description: 15 pages, 7 figures. Discussion has been clarified and additional numerical evidence for information theoretic equilibration is provided for a variant of the Heisenberg model as well as one and two-dimensional random local Hamiltonians
Short-term occupations at high elevation during the Middle Paleolithic at Kalavan 2 (Republic of Armenia)
Creators: name: Malinsky-Buller, Ariel
name: Glauberman, Philip
name: Ollivier, Vincent
name: Lauer, Tobias
name: Timms, Rhys
name: Frahm, Ellery
name: Brittingham, Alexander
name: Triller, Benno
name: Kindler, Lutz
name: Nir, Nadav
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: volcano Eastern Anatolia
subject: wax n-alkanes
subject: Lesser Caucasus
subject: raw-material
subject: explosive eruptions
subject: obsidian artifacts
subject: habitat selection
subject: Geghama highland
subject: 900 Geschichte und Geografie::930 Geschichte des Altertums (bis ca. 499), Archäologie::930 Geschichte des Altertums bis ca. 499, Archäologie

description: The Armenian highlands encompasses rugged and environmentally diverse landscapes and is characterized by a mosaic of distinct ecological niches and large temperature gradients. Strong seasonal fluctuations in resource availability along topographic gradients likely prompted Pleistocene hominin groups to adapt by adjusting their mobility strategies. However, the role that elevated landscapes played in hunter-gatherer settlement systems during the Late Pleistocene (Middle Palaeolithic [MP]) remains poorly understood. At 1640 m above sea level, the MP site of Kalavan 2 (Armenia) is ideally positioned for testing hypotheses involving elevation-dependent seasonal mobility and subsistence strategies. Renewed excavations at Kalavan 2 exposed three main occupation horizons and ten additional low densities lithic and faunal assemblages. The results provide a new chronological, stratigraphical, and paleoenvironmental framework for hominin behaviors between ca. 60 to 45 ka. The evidence presented suggests that the stratified occupations at Kalavan 2 locale were repeated ephemerally most likely related to hunting in a high-elevation within the mountainous steppe landscape.
Methane emissions from the storage of liquid dairy manure: Influences of season, temperature and storage duration
Creators: name: Cárdenas, Aura
name: Ammon, Christian
name: Schumacher, Britt
name: Stinner, Walter
name: Herrmann, Christiane
name: Schneider, Marcel
name: Weinrich, Sören
name: Fischer, Pete
name: Amon, Thomas
name: Amon, Barbara
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: Methane emissions
subject: GHG emissions
subject: Cattle manure storage
subject: Emissions reduction potential
subject: Manure temperature
subject: 600 Technik, Medizin, angewandte Wissenschaften::630 Landwirtschaft::630 Landwirtschaft und verwandte Bereiche

description: Methane emissions from livestock manure are primary contributors to GHG emissions from agriculture and options for their mitigation must be found. This paper presents the results of a study on methane emissions from stored liquid dairy cow manure during summer and winter storage periods. Manure from the summer and winter season was stored under controlled conditions in barrels at ambient temperature to simulate manure storage conditions. Methane emissions from the manure samples from the winter season were measured in two time periods: 0 to 69 and 0 to 139 days. For the summer storage period, the experiments covered four time periods: from 0 to 70, 0 to 138, 0 to 209, and 0 to 279 continuous days, with probing every 10 weeks. Additionally, at the end of all storage experiments, samples were placed into eudiometer batch digesters, and their methane emissions were measured at 20 degrees C for another 60 days to investigate the potential effect of the aging of the liquid manure on its methane emissions. The experiment showed that the methane emissions from manure stored in summer were considerably higher than those from manure stored in winter. CH4 production started after approximately one month, reaching values of 0.061 kg CH4 kg(-1) Volatile Solid (VS) and achieving high total emissions of 0.148 kg CH4 kg(-1) VS (40 weeks). In winter, the highest emissions level was 0.0011 kg CH4 kg(-1) VS (20 weeks). The out comes of these experimental measurements can be used to suggest strategies for mitigating methane emissions from manure storage.
How does an emotional culture of joy cultivate team resilience? A sociocognitive perspective
Creators: name: Hartmann, Silja
name: Weiss, Matthias
name: Hoegl, Martin
name: Carmeli, Abraham
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: emotional culture
subject: high-quality connections
subject: positive organizational behavior
subject: team reflexivity
subject: team resilience
subject: 300 Sozialwissenschaften::330 Wirtschaft::330 Wirtschaft

description: The complex nature of work tasks leads many organizations to organize work around teams, which must develop the capacity to cope with and adapt to a variety of adverse situations. However, our knowledge and understanding of what enables and inhibits the development of resilient teams, that is, change in teams' resilience capacity, have yet to be fully developed. Drawing on the build hypothesis of broaden-and-build theory, we explore the dynamic emotional, social, and cognitive elements that underlie change in team resilience capacity. We posit that a change in a team's emotional culture of joy predicts change in team resilience capacity through both social and cognitive mechanisms (i.e., change in mutuality and change in reflexivity). The results from a two-wave study involving 91 teams (comprising 1291 individual responses) indicate that the positive relationship between change in the emotional culture of joy and change in team resilience capacity is mediated by change in mutuality and change in reflexivity. This research advances the emerging literature on team resilience by theoretically delineating the underlying affective, social, and cognitive collective mechanisms that lead to within-team variability in team resilience capacity.
Job Demands, Job Resources, and Well-being in Police Officers - a Resource-Oriented Approach
Creators: name: Wolter, Christine
name: Santa Maria, Andreas
name: Wörfel, Franziska
name: Gusy, Burkhard
name: Lesener, Tino
name: Kleiber, Dieter
name: Renneberg, Babette
Publisher: name: Freie Universität Berlin
Year: 2019
Subjects: subject: police officers
subject: well-being
subject: emotional exhaustion
subject: Job Demands-Resources model
subject: 100 Philosophie und Psychologie::150 Psychologie::158 Angewandte Psychologie

description: This study examined the association between job characteristics, namely job demands and job resources, and mental health outcomes in terms of emotional exhaustion and well-being among police officers. Eight hundred forty-three German police officers participated in a cross-sectional online survey. Structural equation modeling was used to examine the validity of the dual process model of the Job Demands-Resources (JD-R) framework in the context of police work. Job demands (verbal assaults by citizens, workload, and administrative stressors) predicted emotional exhaustion whereas job resources (team support, shared values, and perceived fairness) predicted well-being. Moreover, job resources were directly and negatively associated with emotional exhaustion. The findings confirm the capacity of job resources to simultaneously promote well-being and reduce emotional exhaustion. Work place interventions should thus not merely decrease job demands. To improve and protect police officers’ well-being, it is advisable to promote job resources. A supportive and fair organizational climate based on shared values is required to foster mental health in the context of police work.
The interaction of chondroitin sulfate with a lipid monolayer observed by using nonlinear vibrational spectroscopy
Creators: name: Szekeres, Gergo Peter
name: Krekic, Szilvia
name: Miller, Rebecca L.
name: Mero, Mark
name: Pagel, Kevin
name: Heiner, Zsuzsanna
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: vibrational sum-frequency generation
subject: chondroitin sulfate
subject: dipalmitoyl phosphatidylcholine
subject: 500 Naturwissenschaften und Mathematik::540 Chemie::541 Physikalische Chemie

description: The first vibrational sum-frequency generation (VSFG) spectra of chondroitin sulfate (CS) interacting with dipalmitoyl phosphatidylcholine (DPPC) at air–liquid interface are reported here, collected at a laser repetition rate of 100 kHz. By studying the VSFG spectra in the regions of 1050–1450 cm−1, 2750–3180 cm−1, and 3200–3825 cm−1, it was concluded that in the presence of Ca2+ ions, the head groups together with the head-group-bound water molecules in the DPPC monolayer are strongly influenced by the interaction with CS, while the organization of the phospholipid tails remains mostly unchanged. The interactions were observed at a CS concentration below 200 nM, which exemplifies the potential of VSFG in studying biomolecular interactions at low physiological concentrations. The VSFG spectra recorded in the O–H stretching region at chiral polarization combination imply that CS molecules are organized into ordered macromolecular superstructures with a chiral secondary structure.
S. Mironenko, L. Niethammer, A. von Plato (Hg.) mit V. Knigge, G. Morsch, Sowjetische Speziallager in Deutschland 1945 bis 1950. Band 1: Studien und Bericht, hg. und eingeleitet von A. von Plato, 1998
Creators: name: Corbin, A.-M.
Publisher: name: Francia
Year: 2019

description: Francia, Bd. 28 Nr. 3 (2001)
Variable Phase S-Matrix Calculations for Asymmetric Potentials and Dielectrics
Creators: name: Forrow, Aden
name: Graham, Noah
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Motivated by recently developed techniques making it possible to compute Casimir energies for any object whose scattering S-matrix (or, equivalently, T-matrix) is available, we develop a variable phase method to compute the S-matrix for localized but asymmetric sources. Starting from the case of scalar potential scattering, we develop a combined inward/outward integration algorithm that is numerically efficient and extends robustly to imaginary wave number. We then extend these results to electromagnetic scattering from a position-dependent dielectric. This case requires additional modifications to disentangle the transverse and longitudinal modes.
description: 12 pages, 5 .eps figures, RevTeX; v2: added sample numerical calculations, minor corrections
The Self-Similarity of the Circumgalactic Medium with Galaxy Virial Mass: Implications for Cold-Mode Accretion
Creators: name: Churchill, Christopher W.
name: Nielsen, Nikole M.
name: Kacprzak, Glenn G.
name: Trujillo-Gomez, Sebastian
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We apply halo abundance matching to obtain galaxy virial masses, M_h, and radii, Rvir, for the 183 isolated galaxies in the "MgII Absorber-Galaxy Catalog" (MAGIICAT, Nielsen et al.). All galaxies have spectroscopic redshifts (0.1 < z < 1.1) and their circumgalactic medium (CGM) is probed in MgII absorption within projected galactocentric distances D < 200 kpc. We examine the behavior of equivalent width, W(2796), and covering fraction, f_c, as a function of D, D/Rvir, and M_h. We find: [1] systematic segregation of M_h on the W(2796)-D plane (4.0 sigma); high-mass halos are found at higher D with larger W(2796) compared to lower mass halos. On the W(2796)-D/Rvir plane, mass segregation vanishes and we find W(2796) ~ (D/Rvir)^-2 (8.9 sigma); [2] higher mass halos have larger f_c at a given D, whereas f_c is independent of M_h at all D/Rvir; [3] f_c is constant with M_h over the range 10.7 < log(M_h/Msun) < 13.8 within a given D or D/Rvir. The combined results suggest that the MgII absorbing CGM is self-similar with halo mass, even above log(M_h/Msun)~12, where cold mode accretion is theoretically predicted to be quenched. If theory is correct, either outflows or sub-halos must contribute to absorption in high-mass halos such that low- and high-mass halos are observationally indistinguishable using MgII absorption strength once impact parameter is scaled by halo mass. Alternatively, the data may indicate that predictions of a universal shut down of cold-mode accretion in high-mass halos may require revision.
description: revised version includes additional galaxies and is the published version in Astrophysical Letters
Cold-priming of chloroplast ROS signalling is developmentally regulated and is locally controlled at the thylakoid membrane
Creators: name: Buer, Jörn Van
name: Prescher, Andreas
name: Baier, Margarete
Publisher: name: Freie Universität Berlin
Year: 2019
Subjects: subject: abiotic
subject: plant molecular biology
subject: plant signalling
subject: 500 Naturwissenschaften und Mathematik::570 Biowissenschaften; Biologie::571 Physiologie und verwandte Themen

description: 24 h exposure to 4 °C primes Arabidopsis thaliana in the pre-bolting rosette stage for several days against full cold activation of the ROS responsive genes ZAT10 and BAP1 and causes stronger cold-induction of pleiotropically stress-regulated genes. Transient over-expression of thylakoid ascorbate peroxidase (tAPX) at 20 °C mimicked and tAPX transcript silencing antagonized cold-priming of ZAT10 expression. The tAPX effect could not be replaced by over-expression of stromal ascorbate peroxidase (sAPX) demonstrating that priming is specific to regulation of tAPX availability and, consequently, regulated locally at the thylakoid membrane. Arabidopsis acquired cold primability in the early rosette stage between 2 and 4 weeks. During further rosette development, primability was widely maintained in the oldest leaves. Later formed and later maturing leaves were not primable demonstrating that priming is stronger regulated with plant age than with leaf age. In 4-week-old plants, which were strongest primable, the memory was fully erasable and lost seven days after priming. In summary, we conclude that cold-priming of chloroplast-to-nucleus ROS signalling by transient post-stress induction of tAPX transcription is a strategy to modify cell signalling for some time without affecting the alertness for activation of cold acclimation responses.
Critical phenomena in exponential random graphs
Creators: name: Yin, Mei
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The exponential family of random graphs is one of the most promising class of network models. Dependence between the random edges is defined through certain finite subgraphs, analogous to the use of potential energy to provide dependence between particle states in a grand canonical ensemble of statistical physics. By adjusting the specific values of these subgraph densities, one can analyze the influence of various local features on the global structure of the network. Loosely put, a phase transition occurs when a singularity arises in the limiting free energy density, as it is the generating function for the limiting expectations of all thermodynamic observables. We derive the full phase diagram for a large family of 3-parameter exponential random graph models with attraction and show that they all consist of a first order surface phase transition bordered by a second order critical curve.
description: 14 pages, 8 figures
Hiérarchies et Services au Moyen Âge. Séminaire Sociétés. Idéologies et Croyances au Moyen Âge, dir. par C. Carozzi et H. Taviani-Carozzi, 2001
Creators: name: Nolte, Cordula
Publisher: name: Francia
Year: 2019

description: Francia, Bd. 31 Nr. 1 (2004)
Antimicrobial peptide expression in a wild tobacco plant reveals the limits of host-microbe-manipulations in the field
Creators: name: Weinhold, Arne
name: Dorcheh, Elham Karimi
name: Li, Ran
name: Rameshkumar, Natarajan
name: Baldwin, Ian T.
Publisher: name: Freie Universität Berlin
Year: 2019
Subjects: subject: host-microbe-manipulations
subject: tobacco
subject: antimicrobial peptide expression
subject: 500 Naturwissenschaften und Mathematik::590 Tiere (Zoologie)::590 Tiere (Zoologie)

description: Plant-microbe associations are thought to be beneficial for plant growth and resistance against biotic or abiotic stresses, but for natural ecosystems, the ecological analysis of microbiome function remains in its infancy. We used transformed wild tobacco plants (Nicotiana attenuata) which constitutively express an antimicrobial peptide (Mc-AMP1) of the common ice plant, to establish an ecological tool for plant-microbe studies in the field. Transgenic plants showed in planta activity against plant-beneficial bacteria and were phenotyped within the plants´ natural habitat regarding growth, fitness and the resistance against herbivores. Multiple field experiments, conducted over 3 years, indicated no differences compared to isogenic controls. Pyrosequencing analysis of the root-associated microbial communities showed no major alterations but marginal effects at the genus level. Experimental infiltrations revealed a high heterogeneity in peptide tolerance among native isolates and suggests that the diversity of natural microbial communities can be a major obstacle for microbiome manipulations in nature.
On General BCJ Relation at One-loop Level in Yang-Mills Theory
Creators: name: Du, Yi-Jian
name: Luo, Hui
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: BCJ relation reveals a dual between color structures and kinematic structure and can be used to reduce the number of independent color-ordered amplitudes at tree level. Refer to the loop-level in Yang-Mills theory, we investigate the similar BCJ relation in this paper. Four-point 1-loop example in N = 4 SYM can hint about the relation of integrands. Five-point example implies that the general formula can be proven by unitary- cut method. We will then prove a 'general' BCJ relation for 1-loop integrands by D-dimension unitary cut, which can be regarded as a non-trivial generalization of the (fundamental)BCJ relation given by Boels and Isermann in [arXiv:1109.5888 [hep-th]] and [arXiv:1110.4462 [hep-th]].
description: 18 pages, 6 figures
Dietary patterns and biomarkers of oxidative stress and inflammation: A systematic review of observational and intervention studies
Creators: name: Aleksandrova, Krasimira
name: Koelman, Liselot
name: Rodrigues, Caue Egea
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: Dietary patterns
subject: Oxidative stress
subject: Inflammation
subject: Biomarkers
subject: Systematic review
subject: 500 Naturwissenschaften und Mathematik::570 Biowissenschaften; Biologie::570 Biowissenschaften; Biologie

description: Introduction Oxidative stress and inflammation are known to play a critical role in ageing and chronic disease development and could therefore represent important targets for developing dietary strategies for disease prevention. We aimed to systematically review the results from observational studies and intervention trials published in the last 5 years on the associations between dietary patterns and biomarkers of oxidative stress and inflammation. Methods A systematic search of the PubMed, MEDLINE and Web of Science (January 2015 to October 2020) was conducted following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. Methodological quality of selected studies was evaluated based on the NUTRIGRADE and BIOCROSS assessment tools. Results In total, 29 studies among which 16 observational studies and 13 intervention studies were found eligible for review. Overall, results indicated an inverse association between plant-based diets - the Mediterranean and Dietary Approaches to Stop Hypertension (DASH) diet - and oxidative stress and proinflammatory biomarkers. In observational studies, inverse associations were further revealed for the vegetarian diet, the USDA Healthy Eating Index (HEI) - based diet and the paleolithic diet, whereas a positive association was seen for western and fast food diets. Quality assessment suggested that majority of dietary intervention studies (n = 12) were of low to moderate quality. Conclusions This study provides evidence that the plant-based dietary patterns are associated with lowered levels of oxidative stress and inflammation and may provide valid means for chronic disease prevention. Future large-scale intervention trials using validated biomarkers are warranted to confirm these findings.
RECOGNIZING PORPHYRY COPPER POTENTIAL FROM TILL ZIRCON COMPOSITION: A CASE STUDY FROM THE HIGHLAND VALLEY PORPHYRY DISTRICT, SOUTH-CENTRAL BRITISH COLUMBIA
Creators: name: Lee, Robert G.
name: Plouffe, Alain
name: Ferbey, Travis
name: Hart, Craig J. R.
name: Hollings, Pete
name: Gleeson, Sarah A.
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: porphyry copper
subject: potential
subject: zircon
subject: 500 Naturwissenschaften und Mathematik::550 Geowissenschaften, Geologie::550 Geowissenschaften

description: The detrital zircons in tills overlying the Guichon Creek batholith, British Columbia, Canada, have trace element concentrations and ages similar to those of zircons from the bedrock samples from which they are interpreted to have been sourced. Rocks from the core of the batholith that host porphyry copper mineralization have distinct zircon compositions relative to the distal, barren margin. We analyzed 296 zircons separated from 12 subglacial till samples to obtain U-Pb ages and trace element compositions. Laser ablation U-Pb ages of the detrital zircons overlap within error with chemical abrasion-thermal ionization mass spectrometry U-Pb ages of the Late Triassic Guichon Creek batholith and confirm that the detrital zircons are likely derived from the batholith. The youngest intrusions of the batholith produced the Highland Valley Copper porphyry deposits and contain distinctive zircons with elevated Eu/EuN* >0.4 attributed to high magmatic water contents and oxidation states, indicating higher porphyry copper potential. Zircon from till samples adjacent to and 9 km down-ice from the mineralized centers have mean Eu/EuN* >0.4, which are indicative of potential porphyry copper mineralization. Detrital zircon grains from more distal up- and down-ice locations (10–15 km) have zircon Eu/EuN* mean values of 0.26 to 0.37, reflecting background values. We conclude that detrital zircon compositions in glacial sediments transported several kilometers can be used to establish the regional potential for porphyry copper mineralization.
L'impôt au Moyen Âge. L'impôt public et prélèvement seigneurial fin XIIe-début XVIe siècle. I. Le droit d'imposer; II. Les espaces fiscaux; III. Les techniques. Colloque tenu à Bercy les 14, 15 et 16 juin 2000 sous la direction scientifique de P. Contamin
Creators: name: Militzer, Klaus
Publisher: name: Francia
Year: 2019

description: Francia, Bd. 31 Nr. 1 (2004)
Novel indirect co-culture of immortalised hepatocytes with monocyte derived macrophages is characterised by pro-inflammatory cytokine networks
Creators: name: Padberg, Florian
name: Höper, Tessa
name: Henkel, Sebastian
name: Driesch, Dominik
name: Luch, Andreas
name: Zellmer, Sebastian
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: Co-culture
subject: Fa2N-4
subject: Monocyte derived macrophages
subject: Cytokine correlation network
subject: Acute phase
subject: 500 Naturwissenschaften und Mathematik::570 Biowissenschaften; Biologie::570 Biowissenschaften; Biologie

description: The liver is composed of different cell populations. Interactions of different cell populations can be investigated by a newly established indirect co-culture system consisting of immortalised primary human hepatocytes and human monocyte derived macrophages (MDMs). Using the time-dependent cytokine secretion of the co-cultures and single cultures, correlation networks (including the cytokines G-CSF, CCL3, MCP-1, CCL20, FGF, TGF-β1, GM-CSF, IL-8 IL-6, IL-1β, and IL-18) were generated and the correlations were validated by application of IL-8 and TNF-α-neutralising antibodies. The data reveal that IL-8 is crucial for the interaction between hepatocytes and macrophages in vitro. In addition, transcriptome analyses showed that a change in the ratio between macrophages and hepatocytes may trigger pro-inflammatory signalling pathways of the acute phase response and the complement system (release of, e.g., certain cyto- and chemokines). Using diclofenac and LPS showed that the release of cytokines is increasing with higher ratios of MDMs. Altogether, we could demonstrate that the current co-culture system is better suited to mirror the in vivo situation when compared to previously established co-culture systems composed of HepG2 and differentiated THP-1 cells. Further, our data reveal that the cytokine IL-8 is crucial for the interaction between hepatocytes and macrophages in vitro.
Continuum time-dependent Hartree-Fock for giant resonances in spherical nuclei
Creators: name: Pardi, C. I.
name: Stevenson, P. D.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: This paper deals with the solution of the spherically symmetric time-dependent Hartree-Fock approximation applied in the case of nuclear giant monopole resonances. The problem is spatially unbounded as the resonance state is in the continuum. The practical requirement to perform the calculation in a finite-sized spatial region results in a difficulty with the spatial boundary conditions. Here we propose a absorbing boundary condition scheme to handle the conflict. The derivation, via a Laplace transform method, and implementation is described. The accuracy and efficiency of the scheme is tested and the results presented to support the case that they are a effective way of handling the artificial boundary.
description: 13 pages, 8 figures
Investigations toward a Non-Aqueous Hybrid Redox-Flow Battery with a Manganese-Based Anolyte and Catholyte
Creators: name: Schmucker, Maximilian
name: Gully, Tyler A.
name: Schmidt, Alexei
name: Schmidt, Benjamin
name: Bromberger, Kolja
name: Disch, Joey
name: Butschke, Burkhard
name: Burgenmeister, Benedikt
name: Sonnenberg, Karsten
name: Riedel, Sebastian
Publisher: name: Freie Universität Berlin
Year: 2021
Subjects: subject: anolytes
subject: catholytes
subject: manganese
subject: non-aqueous
subject: redox-flow batteries
subject: 500 Naturwissenschaften und Mathematik::540 Chemie::540 Chemie und zugeordnete Wissenschaften

description: A new all-Manganese flow battery (all-MFB) as a non-aqueous hybrid redox-flow battery is reported. The discharged active material [Cat]2[MnIICl4] (Cat = organic cation) utilized in both half-cells supports a long cycle life. The reversible oxidation of [MnIICl4]2− to [MnIIICl5]2− at the positive electrode and manganese metal deposition from [MnIICl4]2− at the negative electrode give a cell voltage of 2.59 V. Suitable electrolytes are prepared and optimized, followed by a characterization in static battery cells and in a pumped flow-cell. Several electrode materials, solvents, and membranes are tested for their feasibility in the all-MFB. An electrolyte consisting of [EMP]2[MnCl4] and some solvent γ-butyrolactone is cycled 500 times, both in a static as well as a flow-cell, over a period of two months, with coulombic efficiencies up to 83%. With the electrolytes prepared in this work, energy densities up to 74 Wh L−1 are possible, exceeding the VRFB benchmark system, using solely the cheap and abundant element manganese as the active material. Although further optimizations are necessary, this system represents a new and promising setup toward sustainable stationary energy storage.
title: Changes in Obstacles to Learning During the COVID-19 Pandemic for University Students and Recommended Solutions
Creators: name: Williams, Becky
name: Brosi, Sunshine L
Publisher: name: Utah State University
Year: 2022

description: Access the online Pressbooks version of this article here.
The COVID-19 pandemic caused disruptions to student learning from K–12 to universities and continues to manifest negative effects on students. To better understand the challenges our students face and how those obstacles have changed since the COVID-19 pandemic began, we surveyed our undergraduate ecology students who ranked obstacles to learning they experience in technology, learning environment, and economic security. The majority of respondents report conditions have worsened since the onset of the pandemic. Surveys identified the largest challenges on average were being unfamiliar with technology, using a smartphone or tablet for coursework, balancing work and employment, and having trouble focusing and retaining information. A principal components analysis (PCA) identified that not having reliable internet, having children and other dependents in the home to care for, and not having a safe or private place to study were also common challenges. The PCA also indicated that food and housing insecurity outweighed job insecurity, which may indicate that our students are underemployed or poorly paid. Non-white females and first-generation college students face more obstacles than other groups. Surprisingly, the frequency of obstacles faced did not influence academic normalized learning gains (NLGs). Nor did students with a higher number of demographic markers that indicate historically underserved groups show lower NLGs. Mitigating obstacles to learning as the pandemic continues and new virus variants emerge will take a multi-faceted approach and understanding of each individual student’s challenges. Recommendations to mitigate the burden include students’ self-identified preferred solutions of having more flexible assignment dates, study zones with good wifi, and more asynchronous material. Access to updated computers would also be beneficial. Given that housing and food security scored highly in obstacles experienced, food banks on campus could assist in relieving some of this economic burden. Finally, strategies such as dividing online material into small chunks (< 15 minutes), followed by formative assessment opportunities for student metacognition (quizzes, reflections, discussions), then followed by synchronous sessions focused on active learning provided a strong support for learning for all students pre-pandemic and these strategies continue to transcend the pandemic and lessen its short- and long-term impacts.