cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Non-hydrogenic excitons in perovskite CH$_3$NH$_3$PbI$_3$
Creators: name: Menéndez-Proupin, E.
name: Ríos, Carlos L. Beltrán
name: Wahnón, P.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The excitons in the orthorhombic phase of the perovskite CH$_3$NH$_3$PbI$_3$ are studied using the effective mass approximation. The electron-hole interaction is screened by a distance-dependent dielectric function, as described by the Haken potential or the Pollmann-Büttner potential. The energy spectrum and the eigenfunctions are calculated for both cases. The effective masses, the low and high frequency dielectric constants, and the interband absorption matrix elements, are obtained from generalized density functional theory calculations. The results show that the Pollmann-Büttner model provides better agreement with the experimental results. The discrete part of the exciton spectrum is composed of a fundamental state with a binding energy of 24 meV, and higher states that are within 2 meV from the onset the unbound exciton continuum. Light absorption is dominated by the fundamental line with an oscillator strength of 0.013, followed by the exciton continuum. The calculations have been performed without fitting any parameter from experiments and are in close agreement with recent experimental results.
description: 6 pages, 2 figures
Trauma-Informed Considerations for Direct-Service Practitioners and Organizations Supporting Central American Unaccompanied Minors: Perspectives from Key Informants in the Field
Creators: name: Rosado, Benjamin
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2018

description: As of June 2018, most unaccompanied minors apprehended at the United States-Mexico border are adolescents and come from Central America – specifically El Salvador, Guatemala, and Honduras. Undoubtedly, the resilience and strength of these youth have contributed to their arrival and adjustment to life in the U.S. Meanwhile, the various forms of trauma they confront before, during, and after migration present challenges to their integration process in new communities. The use and adoption of trauma-informed approaches is one way to address their trauma and promote healing among Central American unaccompanied youth. Through qualitative semi-structured interviews with key informants (i.e. attorneys, school-based educators, mental health professionals, and community advocates), this paper describes the effects of trauma on unaccompanied youth and examines trauma-informed practice-based and organizational considerations for this population. This paper aims to compile a non-exhaustive list of considerations for practitioners and service delivery organizations supporting Central American unaccompanied youth that respond to trauma, promote empowerment and healing, and ultimately contribute to their integration process in the U.S.
On the convex structure of process POVMs
Creators: name: Jencova, Anna
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Measurements on quantum channels are described by so-called process operator valued measures, or process POVMs. We study implementing schemes of extremal process POVMs. As it turns out, the corresponding measurement must satisfy certain extremality property, which is stronger that the usual extremality given by the convex structure. This property motivates the introduction and investigation of the A-convex structure of POVMs, which generalizes both the usual convex and C*-convex structure. We show that extremal points and faces of the set of process POVMs are closely related to A-extremal points and A-faces of POVMs, for a certain subalgebra A. We give a characterization of A-extremal and A-pure POVMs in the Appendix.
description: 20 pages
L'evoluzione dell'approccio estimativo in relazione ad una viisone processuale e sistemica dell'arte del costruire. I riflessi della normativa comunitaria e nazionale in materia
Creators: name: Caruso Di Spaccaforno, A.
Publisher: name: Aestimum
Year: 2009

description: Aestimum, Atti del XXV Incontro di Studio (1995)
Digitale Lerninfrastrukturen an Hochschulen. Systematisches Review zu den Rahmenbedingungen für das Lehren und Lernen mit Medien an deutschen Hochschulen.
Creators: name: Pensel, Sabrina
name: Hofhues, Sandra
Publisher: name: Universität Tübingen
Year: 2017
Subjects: subject: Medien , Studium , Hochschule , Digitalisierung , Infrastruktur , Strategie , Neue Medien , Lernumwelt , Entwicklung , Lernort , Digitales System , Raum , E-Learning , Student
subject: 370
subject: Digitalisierungsstrategie
subject: Lerninfrastruktur
subject: student
subject: Hochschulentwicklung
subject: digitale Hochschulinfrastruktur
subject: learning
subject: Lernräume
subject: digital infrastructure
subject: media
subject: university
subject: Bildungsraum

description: Das vorliegende systematische Review nimmt ausgehend vom BMBF-geförderten Verbundforschungsprojekt „You(r) Study“ Forschungsarbeiten (im weitesten Sinne) zu digitalen Lerninfrastrukturen an Hochschulen unter die Lupe. Dazu wird der Forschungsstand zu den Rahmenbedingungen für medien-gestütztes Lehren und Lernen an deutschen Hochschulen erarbeitet und durch internationale Sichtweisen ergänzt. Mit Blick auf die Makroebene wird deutlich, dass die organisationalen Besonderheiten von Hochschulen einen entscheidenden Einfluss auf die Implementierung von digitalen Lerninfrastrukturen haben. Zudem werden akteur- und handlungsspezifische Aspekte beleuchtet, um erste Antworten auf die Fragen zu finden, wie digitale Medien von Hochschulakteur*innen genutzt werden und wie digitale Lerninfrastrukturen studentisches Medienhandeln prägen können.
Medieneinsatz in der Hochschullehre. Akademische Lehr-Lernkonzepte zwischen Zumutung und Zu-Mutung.
Creators: name: Riplinger, Tim
name: Schiefner-Rohs, Mandy
Publisher: name: Universität Tübingen
Year: 2017
Subjects: subject: Medien , Hochschullehre , Neue Medien , Hochschuldidaktik , Mediendidaktik , Lehre , Kultur
subject: 370
subject: Lehrkultur
subject: Medieneinsatz
subject: digitale Medien
subject: didactics
subject: teaching
subject: digital media

description: Das vorliegende systematische Review nimmt – ausgehend vom BMBF-geförderten Verbundforschungsprojekt „You(r) Study“ – Forschungsarbeiten zur Rolle digitaler Medien zur Gestaltung von Lehr-Lernarrangements durch Dozierende in den Blick. Ausgehend von konzeptionellen Beiträgen und empirischen Studien werden neben den Lehr-Lernzielen und den Funktionen, die Lehrende digitalen Medien beimessen auch die Rolle von digitalen Medien in verschiedenen Lehrformaten und Disziplinen in den Blick genommen. Aus diesem Vorgehen ergibt sich ein erstes Bild über die Ziele und Perspektiven der Gestaltung von Lehr-Lernarrangements mit und in Medien in der Hochschullehre.
Durham Adolescent Perspectives on Contraception and Sexual Health Services
Creators: name: Garrison, Michela
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2017

description: OBJECTIVES: This study examines Durham County, NC teen perspectives on contraception and on accessing sexual and reproductive health (SRH) services. METHODS: In spring of 2016 12 focus group discussions were conducted with 87 youth, ages 13-26 years old. Thematic analysis was conducted in NVivo 9 using an overarching Social Cognitive Theory of Behavior framework. RESULTS: Regarding contraception and accessing SRH services teens have concerns about negative side-effects of contraception, parental disapproval, poor health literacy, and confidentiality. Hispanic and male teens reported experiencing unique barriers. CONCLUSIONS: An understanding of the barriers teens face in accessioning and using contraception and sexual health services is being used to inform the technical assistance and work plans of project partners of the CDC-funded All Together Now (ATN) project led by the non-profit SHIFT NC.
Local decay for the damped wave equation in the energy space
Creators: name: Royer, Julien
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mathematical Physics (math-ph)
subject: Analysis of PDEs (math.AP)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We improve a previous result about the local energy decay for the damped wave equation on R^d. The problem is governed by a Laplacian associated with a long range perturbation of the flat metric and a short range absorption index. Our purpose is to recover the decay O(t^{--d+$ε$}) in the weighted energy spaces. The proof is based on uniform resolvent estimates, given by an improved version of the dissipative Mourre theory. In particular we have to prove the limiting absorption principle for the powers of the resolvent with inserted weights.
Jugendkriminalität und Jugendgefährdung. Jahresbericht 2012
Creators: name: (:Unkn) Unknown
Publisher: name: Universität Tübingen
Year: 2013
Subjects: subject: Baden-Württemberg , Jugendkriminalität , Jugendgefährdung , Bericht
subject: 360

description: Bericht über die Entwicklung der Jugendkriminalität in Baden-Württemberg im Jahr 2012.
Assessment of Surface Water Potential, Demand and Future Scenario of Legedadi Watershed
Creators: name: Habtamu Geleta
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2020
Subjects: Scenario, ArcSWAT, WEAP, Water Demand, Legedadi watershed

description: This research is intended to quantify the amount of surface water potential of the
 Legedadi watershed as surface runoff and different water demand depend on this
 watershed. This study aims to provide current surface water potential and demands
 overview at Legedadi watershed. Future predictions in demand are estimated by
 considering different demand scenarios. Land use data, land slope data, soil data,
 hydrological data (1990-2010) and meteorological (1990-2015) data were used as input
 data for the SWAT model to generate surface runoff potential. Surface water potential
 assessment, demand, and scenario analysis of Legedadi watershed was required to
 maximize benefits in the Legedadi watershed. To achieve this goal soil and water
 assessment tool (SWAT) model was used to determine the surface water potential of the
 watershed after sensitivity analysis, calibration, and validation done by SWAT CUP.
 Water Evaluation and Planning (WEAP) model was used to determine different water
 demands and to develop scenarios to determine the future water demand, supply
 requirement, and unmet demand in the year from 2020 up to 2040. The estimated mean
 annual precipitation of the watershed is 1081.26mm. The estimated mean annual actual
 evapotranspiration is 15.3mm while the estimated potential evapotranspiration is 40.4
 mm. The source of surface water availability is directly surface runoff generated from
 the catchments of the area.
 According to this study, the total surface water available from the 207km2 area of the
 watershed was 191.93MCM annually during the study period of 2020 year. Both the
 calibration and validation results showed a satisfactory performance with a value of R2
 and NSE of 0.74 and 0.72 for calibration and 0.83 and 0.78 for validation, respectively.
 Demands for domestic, livestock, industrial, commercial and environmental flow
 requirements in the account year (2020) were 1.334MCM, 6.6MCM, 0.13MCM,
 0.14MCM and 19.19 MCM, respectively. In 2020 the total water demand required was
 27.2MCM. Due to enough available surface water potential in watershed area there
 was no unmet demand annually, but there was a shortage in November and December
 month due to low flow conditions in this month. Harvesting of rainfall during the rainy
 season to use during the deficit (shortage) time in these months was recommended
Mapping CSR in a Saudi Banking Context
Creators: name: Alhejaili, Mohammad
Publisher: name: University of Westminster
Year: 2018

description: This thesis attempted to map the practice of CSR in Saudi Arabia through the adoption of the stakeholder approach by exploring the perspectives of multiple stakeholders of the Saudi banking sector. Qualitative semi-structured interviews were conducted with stakeholders from two Islamic and six conventional Saudi Arabian local banks. The sample included five CSR directors, eight CSR employees, two members of the Shari’ah board and one government representative from the Saudi Arabian Monetary Authority. The interviews explored the stakeholders’ awareness and perceptions of the CSR concept; how banks implement CSR including the areas of focus; the motives and drivers to applying CSR; and the barriers and obstacles facing an enhanced practice of CSR. A supplementary study was also conducted through a qualitative document analysis of the most recent annual disclosure reports and websites of twelve Saudi local banks to identify the areas of CSR implementation by these banks. The participants were found to be aware of the CSR concept, and their definitions included the ‘Nature of CSR’, ‘Stakeholders benefiting from CSR’, ‘Mechanism of CSR’, and ‘Outcome of CSR’. In addition, those who have longer practical experience and higher scientific degrees reflected a higher level of awareness compared to others. As for CSR implementation, the results of the interviews and the document analysis revealed a range of areas focused upon by banks including activities towards the ‘Society’, ‘Environment’, ‘Shareholders’, ‘Costumers’, and ‘Employees’. In addition, a range of motives and drivers were reported by the participants as reasons behind the banks’ CSR activities which were related to ‘Religion’, ‘Bank status’, ‘Business’, and ‘Social’ reasons. Finally, the participants reported a variety of barriers facing an enhanced practice of CSR by banks relating to the ‘Government’, ‘Media’, ‘Partnerships’, ‘Decision-makers’, and ‘Internal policies’. This study displayed the heightened awareness of the CSR concept by the participants and provided up to date information reflecting a recently improved and enhanced practice of CSR by the banks towards a variety of stakeholders. However, there are areas that banks Mapping CSR in a Saudi Banking Context are either deficient in or lacking in their practices which require further improvement and this can be attributed to the barriers that the banking sector has been faced with. The results provide implications for the government, the banks, the media, NGOs and Islamic scholars on how to further develop CSR in a Saudi context by eliminating these barriers and making more use of the motivations and drivers.
A Systematic Review of Breastfeeding Outcomes among Globally Resettled African and Middle Eastern Refugee Women
Creators: name: Epling, Susanna
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2017

description: This paper systematically reviews the literature on breastfeeding outcomes and challenges for resettled African and Middle Eastern refugee/immigrant mothers. It is crucial to know what breastfeeding practices refugee women retain or adopt upon resettlement in their host country, how these practices change over time, where and how to best intervene, and which breastfeeding education/support is most needed. Thirty-two studies (18 observational, 16 qualitative) were included in this review. The findings indicate that there is a high breastfeeding initiation rate, a high duration rate, and low breastfeeding exclusivity after resettlement. The results also indicate a deterioration in breastfeeding initiation and duration practices the longer a woman has been in her country of resettlement. Additional research is needed on breastfeeding in Middle Eastern refugee women as well as appropriate interventions and strategies for addressing breastfeeding disparities and the “acculturation effect.”
Heat flux splitter for near-field thermal radiation
Creators: name: Ben-Abdallah, Philippe
name: Belarouci, Ali
name: Frechette, Luc
name: Biehs, Svend-Age
Publisher: name: arXiv
Year: 2015
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We demonstrate the possibility to efficiently split the near-field heat flux exchanged between graphene nano-disks by tuning their doping. This result paves the way for the developement of an active control of propagation directions for heat fluxes exchanged in near-field throughout integrated nanostructures networks.
Towards End-to-End Verified TEEs via Verified Interface Conformance and Certified Compilers
Creators: name: Derakhshan, Farzaneh
name: Vasudevan, Amit
name: Jia, Limin
name: Zhang, Zichao
Publisher: name: Carnegie Mellon University
Year: 2023
Subjects: classificationCode: 80308
subject: Programming Languages
classificationCode: 80303
subject: Computer System Security

description: Trusted Execution Environments (TEE) are ubiquitous. They form the highest privileged software component of the platform with full access to the system and associated devices. However, vulnerabilities have been found in deployed TEEs allowing an attacker to gain complete control. Despite the progress made in fully-verified software systems, few deployed TEEs are fully-verified, due to the high cost of verification. Instead of aiming for full-functional correctness, this paper proposes a formal framework and approach that leverages compartmentalization at the source level to bring security-relevant properties verified at the source level down to the binary via existing certified compilers. The benefit of our approach is the relative low cost of verification: developers can use existing automated program verification tools and certified compilers. Our case studies demonstrate how security properties verified on two open-source TEEs at the source level can be pushed down to the compiled code by using an off-the-shelf certified compiler.
Women’s Decision Making Autonomy and Childhood Immunization Uptake in Nigeria
Creators: name: Olorunsaiye, Comfort
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2011

description: Background: Childhood immunization remains one of the most cost effective public health interventions to reduce the morbidity and mortality associated with infectious diseases in under-five children. Objective: To assess how maternal decision making autonomy affects the utilization of childhood immunization services in Nigeria. The study also characterizes the regional determinants of immunization uptake. Methods: Representative data from the 2008 Nigeria Demographic and Health Survey were used. With a response rate of 97%, secondary data analysis was based on 4358 children aged 12-23 months (the most recent live births in the 5 years preceding the survey). Results: About 23% of children 12-23 months were fully immunized, while 29% we’re unimmunized and 48% partially immunized. Children whose mothers participated in 3-4 of the four household decisions were almost twice as likely to be fully immunized as children whose mothers did not participate in any household decisions (p<0.001). Conclusion: Maternal decision making autonomy is positively associated with the uptake of childhood immunization services in Nigeria.
Freeze files v1.0
Creators: name: Lorenz-Spreen, Philipp
name: Geers, Michael
name: Pachur, Thorsten
name: Hertwig, Ralph
name: Lewandowsky, Stephan
name: Herzog, Stefan
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Social and Behavioral Sciences

description: Freeze files v1.0 from the github repo attached to this project.
The difficulty of measuring the local dark matter density
Creators: name: Hessman, Frederic V.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The analysis of the vertical velocity dispersion of disc stars is the most direct astronomical means of estimating the local dark matter density, $ρ_{DM}$. Current estimates based on the mid-plane dynamic density use a local baryonic correction that ignores the non-local effects of spiral structure and significantly underestimates the amount of dynamically relevant gas; the additional gas plus the remaining uncertainties make it practically impossible to measure $ρ_{DM}$ from mid-plane kinematics alone. The sampling of inhomogeneous tracer populations with different scale-heights and scale-lengths results in a systematic increase in the observed dispersion gradients and changes in the nominal density distributions that, if not properly considered, can be misinterpreted as a sign of more dark matter. If the disc gravity is modelled using an infinite disc, the local variation in the vertical gravity due to the globally exponential disc components results in an underestimation of the baryonic contribution by as much as ~40% Given only the assumptions of stationarity, an axially and vertically symmetric disc, doubly exponential tracer and mass-component density profiles, a phenomenologically justified model for the cross-dispersion component $σ_{Rz}$, and a realistic model for $g_z$, it is possible to solve the full vertical Jeans equation analytically for the vertical dispersion $σ_{z}(z)$ and hence test the robustness of previous attempts at measuring $ρ_{DM}$. When the model parameters are estimated from SEGUE G dwarf star data, it is still not possible to explain the difference in behaviour seen in the simple thick- and thin-disc datasets reported by Buedenbender et al.. Rather than being a fundamental problem with the kinematical model, this effect appears to be a further sign of the difficulty of defining and handling kinematically homogeneous tracer populations.
description: 11 pages, 3 figures, Astron. & Ap., in press
Modelling the Perinatal Network System
Creators: name: Dalton, Sarah
Publisher: name: University of Westminster
Year: 2018

description: The topic is that hospital capacity for patient beds runs short. We wish to predict when this will occur. An inter-disciplinary approach to this problem is taken incorporating a Management Science / Operational Research perspective. The subject is the Perinatal Network System, which is described, analysed and modelled. An illustrative Case Study is taken of an English local neonatal unit, where new-born babies are cared for. The focus is High dependency cots. Recommendations produced are subject to human factors and implementation difficulties. In this work, Systems Thinking facilitates an understanding of relationships; Enterprise Architecture helps embed the context and address complexity; while Clinical Medicine underpins decision-making for individual patients. Research outputs include the Conceptual Research Framework, a Quality Metric, a Cot Predictor Tool and a Markovian model Design, which can be adapted in the future. Furthermore there is the milieu or connective ‘glue’, to provide unity. The methodology or Enterprise Modelling helps address the issue by facilitating understanding of both overview and detail.
Design of maneuvers based on new normal form approximations: The case study of the CPRTBP
Creators: name: Paez, Rocio Isabel
name: Locatelli, Ugo
Publisher: name: arXiv
Year: 2015
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: In this work, we study the motions in the region around the equilateral Lagrangian equilibrium points L4 and L5, in the framework of the Circular Planar Restricted Three-Body Problem (hereafter, CPRTBP). We design a semi-analytic approach based on some ideas by Garfinkel in [4]: the Hamiltonian is expanded in Poincaré-Delaunay coordinates and a suitable average is performed. This allows us to construct (quasi) invariant tori that are moderately far from the Lagrangian points L4-L5 and approximate wide tadpole orbits. This construction provides the tools for studying optimal transfers in the neighborhood of the equilateral points, when instantaneous impulses are considered. We show some applications of the new averaged Hamiltonian for the Earth-Moon system, applied to the setting-up of some transfers which allow to enter in the stability region filled by tadpole orbits.
description: Published on AIP Conference Proceedings, Volume 1637, Issue 1, p.776-785
Glabrocingulum Thomas 1940
Creators: name: Yoo, E. K.
Publisher: name: Zenodo
Year: 1994
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Pleurotomariida
Eotomariidae
Glabrocingulum

description: Glabrocingulum Thomas, 1940 Australian Carboniferous species. Glabrocingulum obesum Yoo, 1988, from 'Marohn'; Glabrocingulum ornatum (Dun & Benson), 1920, from south of Somerton; Glabrocingulum pustulum n.sp., from Swains Gully; Glabrocingulum sp. (in this study), from 'Marohn'.
description: Published as part of Yoo, E. K., 1994, Early Carboniferous Gastropoda from the Tamworth Belt, New South Wales, Australia, pp. 63-120 in Records of the Australian Museum 46 (1) on page 76, DOI: 10.3853/j.0067-1975.46.1994.18, http://zenodo.org/record/4654599
description: {"references": ["Thomas, E. G., 1940. Revision of the Scottish Carboniferous Pleurotomariidae. Geological Society of Glasgow Trans. 20: 30 - 72, pIs. 14.", "Yoo, E. K., 1988. Early Carboniferous Mollusca from Gundy, Upper Hunter, New South Wales. Records of the Australian Museum 40 (4): 233 - 264."]}
Enzymatic synthesis of Hydroxytyrosol from Oleuropein for valorization of an agricultural waste
Creators: name: García-Molina, Gabriel
name: Peters, Eduard
name: Palmeri, Rosa
name: Awoke, Yaregal
name: Márquez-Álvarez, Carlos
name: Blanco, Rosa M.
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Biophysics
subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Physiology
subject: Pharmacology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Infectious Diseases
subject: FOS: Health sciences

description: Oleuropein (OP) is an appreciated compound present not only in fruits but also in leaves of olive trees, which can be transformed into hydroxytyrosol (HT), a substance with high antioxidant activity. In this work, the transformation of an agricultural residue containing OP (olive leaves or wastewater from mills) to the high added value compound HT is accomplished through different enzymatic strategies. Different enzymes were used, immobilized on various supports by diverse binding forces: beta-glucosidase encapsulated in siliceous material, esterases and lipases immobilized on hydrophobic supports (octyl-functionalized amorphous silica and periodic mesoporous organosilica), and esterase immobilized on amine-functionalized ordered mesoporous silica. All these biocatalysts were tested for oleuropein hydrolysis through two different reaction approaches: a) split of glucosidic bond catalyzed by beta-glucosidase (β-glu), followed by hydrolysis of the aglycon and further ester hydrolysis. 5 mg·mL−1 of β-glu fully hydrolyzed 5 mM OP at pH 7 and 50°C in 7 days, and further enzymatic hydrolysis of the aglycon yielded near to 0.5 mM HT in the best conditions tested. b) via direct hydrolysis of the ester bond to produce hydroxytyrosol in a one-step reaction using esterases or lipases. The latter reaction pathway catalyzed by lipase from Penicillium camemberti immobilized on octyl-silica (4 mg·mL−1) at 35°C and pH 6 directly produced 6.8 mM HT (1 mg·mL−1), transforming in 12 days near to 30% of the initial 25 mM OP from a commercial olive leaves extract.
Automated Kinematic Modelling of Warped Galaxy Discs in Large Hi Surveys: 3D Tilted Ring Fitting of HI Emission Cubes
Creators: name: Kamphuis, P.
name: Józsa, G. I. G.
name: Oh, S-. H.
name: Spekkens, K.
name: Urbancic, N.
name: Serra, P.
name: Koribalski, B. S.
name: Dettmar, R. -J.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Kinematical parameterisations of disc galaxies, employing emission line observations, are indispensable tools for studying the formation and evolution of galaxies. Future large-scale HI surveys will resolve the discs of many thousands of galaxies, allowing a statistical analysis of their disc and halo kinematics, mass distribution and dark matter content. Here we present an automated procedure which fits tilted-ring models to Hi data cubes of individual, well-resolved galaxies. The method builds on the 3D Tilted Ring Fitting Code (TiRiFiC) and is called FAT (Fully Automated TiRiFiC). To assess the accuracy of the code we apply it to a set of 52 artificial galaxies and 25 real galaxies from the Local Volume HI Survey (LVHIS). Using LVHIS data, we compare our 3D modelling to the 2D modelling methods DiskFit and rotcur. A conservative result is that FAT accurately models the kinematics and the morphologies of galaxies with an extent of eight beams across the major axis in the inclination range 20$^{\circ}$-90$^{\circ}$ without the need for priors such as disc inclination. When comparing to 2D methods we find that velocity fields cannot be used to determine inclinations in galaxies that are marginally resolved. We conclude that with the current code tilted-ring models can be produced in a fully automated fashion. This will be essential for future HI surveys, with the Square Kilometre Array and its pathfinders, which will allow us to model the gas kinematics of many thousands of well-resolved galaxies. Performance studies of FAT close to our conservative limits, as well as the introduction of more parameterised models will open up the possibility to study even less resolved galaxies.
description: Accepted to MNRAS. 23 pages, 14 Figures. The code can be found at http://github.com/PeterKamphuis/FAT
Variable metric inexact line-search based methods for nonsmooth optimization
Creators: name: Bonettini, Silvia
name: Loris, Ignace
name: Porta, Federica
name: Prato, Marco
Publisher: name: arXiv
Year: 2015
Subjects: subject: Numerical Analysis (math.NA)
subject: Optimization and Control (math.OC)
subject: FOS: Mathematics
subject: 65K05, 90C30

description: We develop a new proximal-gradient method for minimizing the sum of a differentiable, possibly nonconvex, function plus a convex, possibly non differentiable, function. The key features of the proposed method are the definition of a suitable descent direction, based on the proximal operator associated to the convex part of the objective function, and an Armijo-like rule to determine the step size along this direction ensuring the sufficient decrease of the objective function. In this frame, we especially address the possibility of adopting a metric which may change at each iteration and an inexact computation of the proximal point defining the descent direction. For the more general nonconvex case, we prove that all limit points of the iterates sequence are stationary, while for convex objective functions we prove the convergence of the whole sequence to a minimizer, under the assumption that a minimizer exists. In the latter case, assuming also that the gradient of the smooth part of the objective function is Lipschitz, we also give a convergence rate estimate, showing the O(1/k) complexity with respect to the function values. We also discuss verifiable sufficient conditions for the inexact proximal point and we present the results of a numerical experience on a convex total variation based image restoration problem, showing that the proposed approach is competitive with another state-of-the-art method.
Characterizations of the round two-dimensional sphere in terms of closed geodesics
Creators: name: Kennard, Lee
name: Rainone, Jordan
Publisher: name: arXiv
Year: 2015
Subjects: subject: Differential Geometry (math.DG)
subject: FOS: Mathematics
subject: 53C22, 58E10

description: The question of whether a closed Riemannian manifold has infinitely many geometrically distinct closed geodesics has a long history. Though unsolved in general, it is well understood in the case of surfaces. For surfaces of revolution diffeomorphic to the sphere, a refinement of this problem was introduced by Borzellino, Jordan-Squire, Petrics, and Sullivan. In this article, we quantify their result by counting distinct geodesics of bounded length. In addition, we reframe these results to obtain a couple of characterizations of the round two-sphere.
description: 7 pages
Integrated one-stage models considering undesirable outputs and weighting preference in slacks-based measure of efficiency and superefficiency
Creators: name: Liu, Peide
name: Xu, Hongxue
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biotechnology
classificationCode: 59999
subject: Environmental Sciences not elsewhere classified
classificationCode: 69999
subject: Biological Sciences not elsewhere classified
classificationCode: 80699
subject: Information Systems not elsewhere classified
classificationCode: 19999
subject: Mathematical Sciences not elsewhere classified
subject: Science Policy

description: In the evaluation scenario with undesirable outputs, the SBM-Undesirable model is usually used together with the SuperSBM-Undesirable model to fully differentiate efficient and inefficient decision-making units (DMUs). The existing SuperSBM-Undesirable model has two main forms, but both have problems in implementation. One form may be infeasible under the variable returns to scale (VRS); Another form has an inappropriate definition for undesirable output efficiency. These two problems are seriously ignored in the existing applications. In this paper, we first propose an improved SuperSBM-Undesirable model with strongly efficient projections, which is feasible under the constant returns to scale (CRS) or VRS technology. Then, by integrating the SBM-Undesirable and the improved SuperSBM-Undesirable models, we focus on proposing a concise, precise and practical one-stage model considering undesirable outputs to differentiate all DMUs and determine their strongly efficient projections simultaneously. The proposed one-stage model only contains essential decision variables and constraints, thereby effectively conserving computational time for large-scale practical applications. Further, by introducing the weighting preference of inputs and outputs, we construct the one-stage model with weighting preference to differentiate the importance of different indicators. Finally, through several data experiments, the superiority of our models in computational results and computational scale are verified.
Engineering flat electronic bands in quasiperiodic and fractal loop geometries
Creators: name: Nandy, Atanu
name: Chakrabarti, Arunava
Publisher: name: arXiv
Year: 2015
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: Exact construction of one electron eigenstates with flat, non-dispersive bands, and localized over clusters of various sizes is reported for a class of quasi-one dimensional looped networks. Quasiperiodic Fibonacci and Berker fractal geometries are embedded in the arms of the loop threaded by a uniform magnetic flux. We work out an analytical scheme to unravel the localized single particle states pinned at various atomic sites or over clusters of them. The magnetic field is varied to control, in a subtle way, the extent of localization and the location of the flat band states in energy space. In addition to this we show that, an appropriate tuning of the field can lead to a re-entrant behavior of the effective mass of the electron in a band, with a periodic flip in its sign.
description: 9 pages, 8 figures
Exploring three-way group decisions with consensus evolution network for software ecosystem hierarchical criteria health rating
Creators: name: Wang, Mingwei
name: Liang, Decui
name: Xu, Zeshui
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Cell Biology
subject: Evolutionary Biology
subject: FOS: Biological sciences
classificationCode: 20199
subject: Astronomical and Space Sciences not elsewhere classified
classificationCode: 69999
subject: Biological Sciences not elsewhere classified
classificationCode: 80699
subject: Information Systems not elsewhere classified
subject: Science Policy

description: The appropriate rating of software ecosystem health is to the benefit of its sustainable development. The rating method based on an expert panel with specialised knowledge is reliable for rating software ecosystem health. Complexity often causes obstacles for expert panels to give appropriate ratings. Facing complexity, hierarchical criteria system provides evaluation guides with multiple levels and multiple perspectives. However, at present, effective group decision-making under hierarchical criteria system remains a challenge. Thus, this article systematically investigates consensus reaching process and rating method under hierarchical criteria system of software ecosystem health, which are two important components of group decision-making. To master the consensus situation of all criteria and consensus relationships of pair-wise experts under hierarchical criteria system, we construct hierarchical consensus evolution network. Then, we further propose a novel consensus degree measurement and design a consensus reaching process with pair-wise adjustment by utilising hierarchical characteristics. For rating software ecosystem health efficiently, there are usually three ratings including health, sub-health and ill-health. Three-way decisions exactly provide semantic interpretation for these three ratings. Meanwhile, three-way decisions can reduce the risk of incorrect ratings. Considering these advantages, we develop three-way group decisions with hierarchical consensus evolution network to comprehensively rate software ecosystem health under hierarchical criteria system. Finally, take the health rating of the software ecosystem on GitHub as an example, we develop a series of experiment analysis to verify the effectiveness of the proposed method.
Factors Affecting Facility-Based Delivery in Indonesia
Creators: name: Berthe, Sara
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2011

description: Objectives: To increase understanding of the reasons women choose either facilities or non-facilities for delivery. Methods: A total of 300 women, both postpartum and pregnant, were interviewed in 4 districts in Indonesia. The survey includes questions from the Indonesia Demographic and Health Survey as well as newly created questions. Results: For postpartum facility deliveries, women cited quality of care, knowledge of maternal and child safety and physical access as reasons for choosing a facility. Non-facility deliveries cited cost, quality of care and physical access as barriers which, if removed, would encourage them to deliver in a facility. Conclusions: The government of Indonesia needs to roll-out their public health insurance scheme, jampersal, which will alleviate the costs of facility delivery. Educational campaigns are needed to inform women about the dangers of delivering at home.
Changes in the spectrum of Z Ursae Majoris during its rise through a maximum in June 2014
Creators: name: Boyd, David
Publisher: name: arXiv
Year: 2015
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The semiregular variable Z UMa experienced a particularly deep minimum at the end of March 2014 followed by a three month rise to maximum. The rise and subsequent decline were followed with low resolution (R~1000) spectroscopy, possibly for the first time. The spectral type of Z UMa varied between M7III at minimum and M4III at maximum while the bright hydrogen emission lines reported by observers during the last century now appear relatively weak and transitory.
description: 5 pages, 3 figures
North Carolina's Response to Opioid Exposed Pregnancies
Creators: name: Canady, Megan
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2016

description: The purpose of this paper is to provide a review of how North Carolina has responded to opioid exposed pregnancies North Carolina has experienced a sharp rise in opioid use. It is estimated that opioid exposed pregnancies in North Carolina has resulted in the 511% increase of neonatal abstinence syndrome (NAS) recently reported. This rise in both opioid use and NAS has resulted in increased public health, medical, and political attention to the issue. There are multiple intervention opportunities across service systems and professionals engaging with this population, beginning before pregnancy and continuing throughout a child's developmental milestones. A five‐point framework that addresses prevention and intervention opportunities across all stages of development for children affected by substance use is applied to organize the engagement opportunities that North Carolina can utilize to address substance use, including opioids, among women of childbearing age and their children. The information presented in this report draws from a review of reported trends regarding opioid use and incidence of NAS in North Carolina and across the country. Further, evidence-based best practices of care for opioid exposed pregnancies are included. Information was gathered and analyzed from three sources: a review of recommended initiatives for addressing the issue, a review of existing literature and summaries of state policies and actions to address the issue, and a qualitative study based on interviews with key informants in North Carolina. The overall findings were that North Carolina can continue to work to implement changes through on-going training of professionals that increases both knowledge and skills, but also to focus on policies that reinforce and support best practices.
Spectral breaks of Alfvenic turbulence in a collisionless plasma
Creators: name: Boldyrev, Stanislav
name: Chen, Christopher H. K.
name: Xia, Qian
name: Zhdankin, Vladimir
Publisher: name: arXiv
Year: 2015
Subjects: subject: Space Physics (physics.space-ph)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: Recent observations reveal that magnetic turbulence in the nearly colisionless solar wind plasma extends to scales smaller than the plasma microscales, such as ion gyroradius and ion inertial length. Measured breaks in the spectra of magnetic and density fluctuations at high frequencies are thought to be related to the transition from large-scale hydromagnetic to small-scale kinetic turbulence. The scales of such transitions and the responsible physical mechanisms are not well understood however. In the present work we emphasize the crucial role of the plasma parameters in the transition to kinetic turbulence, such as the ion and electron plasma beta, the electron to ion temperature ratio, the degree of obliquity of turbulent fluctuations. We then propose an explanation for the spectral breaks reported in recent observations.
description: 9 pages, 7 figures. A few typos found in the published version are corrected
Under Recognized Cadres of Human Resources for Health (HRH) in Africa: Professionalizing the Social Service Workforce
Creators: name: Collins, Alexandra
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2012

description: When it comes to available human resources for health (HRH), Africa ranks at the bottom. National governments, with assistance from development partners, are addressing this health worker crisis through various health workforce strengthening programs and strategies. Most efforts have focused on "traditional" cadres of health workers (e.g., doctors and nurses), ignoring a range of other professions integral to providing quality health services. Under-recognized cadres include pharmacists, health information specialists, and supply chain managers, among others, and most central to this review, social service workers. In a region burdened disproportionately by poverty and disease, a strong social service workforce (SSW) is needed to connect vulnerable populations to efforts in health, justice, mental health, and education which traditional cadres of health workers cannot do alone. This review of the current availability, education, professional associations, and career paths of social service workers in Sub-Saharan Africa (SSA) demonstrates the region’s headway in each area of the Framework for Strengthening the Social Service Workforce (Bess, Lopez, Tomaszewski, 2011). Progress in these areas is essential not only to increase the number of social service workers through recruitment and retention but also to raise the status of these cadres to that of other professionals in the health sector.
Regulation of pupil size in natural vision across the human lifespan – Supporting materials: Other supporting material
Creators: name: Lazar, Rafael
name: Spitschan, Manuel
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 321201
subject: Ophthalmology
classificationCode: 520206
subject: Psychophysiology
classificationCode: 429999
subject: Other health sciences not elsewhere classified

description: calibration_script.odp contains the script used for the gaze calibration performed before the start of each trial. The file is in OpenDocument Presentation Document (.odp) format.lab_light_cond_key.xlsx contains information about the laboratory-based part of the experiment and includes the key that translates the 24 different counterbalanced sequences of LED primaries (all combinations of R-G-B-W) into a laboratory condition code, which was used in the experiment notes files (SpectroSense01-SpectroSense24, see Notes.txt files in the Raw data.zip file).Pupil_Labs_settings.docx contains screenshots of the default settings used in the Pupil Labs software (Pupil Labs GmbH, Berlin; release version 1.15.71, https://github.com/pupil-labs/pupil/releases).spectroradiometer_3D_print _case_tilted.jpg shows the 3D printed spectroradiometer case (upper and lower module) as tilted in the experiment (15° below horizontal angle).spectroradiometer_case_bottom.stl is the file used to 3D print the bottom module of the spectroradiometer case.spectroradiometer_case_top.stl is the file used to 3D print the top module of the spectroradiometer case.texts_reading_task_01.pdf contains the reading tasks used as part of the experimental protocol.regulation-of-pupil-size-in-natural-vision-masterarbeit-eknz-en.pdf contains the research project ethics application (latest amendment).2019-01832-Amendment_03 20210506.pdf contains the approval of the Ethics Committee Northwestern and Central Switzerland (EKNZ) for the research project ethics application (latest amendment).20210506_Study information & Informed consent_V3a_clean contains the informed consent and study information used during the project.
Fachspezifische Unterrichtsqualität im Mathematikunterricht
Creators: name: Jentsch, Armin
name: Schlesinger, Lena
Publisher: name: Gesellschaft für Didaktik der Mathematik
Year: 2017
Subjects: subject: 510

description: In der empirischen Unterrichtsforschung in Deutschland hat die Frage nach der Fachspezifizität von Unterrichtsqualität bislang wenig Beachtung gefunden. Es haben sich drei Basisdimensionen (kognitive Aktivierung, konstruktive Unterstützung, Klassenführung) von Unterrichtsqualität etabliert, die letztere in verschiedenen Fächern gleichermaßen beschreiben sollen (z.B. Klieme & Rakoczy, 2008). Hierbei ist fraglich, inwieweit relevante Fachspezifika von Mathematikunterricht ausreichend berücksichtigt werden. Blum und andere (2006) fordern aus diesem Grund neben den drei asisdimensionen eine "fachlich gehaltvolle Gestaltung" von Mathematikunterricht als zusätzlichen Qualitätsaspekt. Insbesondere existiert nach unserem Kenntnisstand kein standardisiertes Instrument zur Erfassung der Qualität von Mathematikunterricht, das neben den fachübergreifenden Basisdimensionen fachspezifische Qualitätsaspekte erhebt, ohne sich dabei auf einen bestimmten mathematischen Inhaltsbereich zu beschränken. Ausgehend von diesem Desiderat wird in dem vorliegenden Beitrag die Fragestellung untersucht, inwieweit sich eine fachspezifische Dimension von Unterrichtsqualität neben den drei etablierten Basisdimensionen konzeptualisieren und mit einem standardisierten Beobachtungsinstrument erfassen lässt.