cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The Hvar survey for roAp stars: II. Final results (Research Note)
Creators: name: Paunzen, E.
name: Netopil, M.
name: Rode-Paunzen, M.
name: Handler, G.
name: Bozic, H.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The 60 known rapidly oscillating Ap (roAp) stars are excellent laboratories to test pulsation models in the presence of stellar magnetic fields. Our survey is dedicated to search for new group members in the Northern Hemisphere. We attempt to increase the number of known chemically peculiar stars that are known to be pulsationally unstable. About 40 h of new CCD photometric data of 21 roAp candidates, observed at the 1m Austrian-Croatian Telescope (Hvar Observatory) are presented. We carefully analysed these to search for pulsations in the frequency range of up to 10mHz. No new roAp star was detected among the observed targets. The distribution of the upper limits for roAp-like variations is similar to that of previoius similar efforts using photomultipliers and comparable telescope sizes. In addition to photometric observations, we need to consolidate spectroscopic information to select suitable targets.
description: 8 pages, 5 figures, accepted by Astronomy & Astrophysics
Additional file 23 of Non-canonical two-step biosynthesis of anti-oomycete indole alkaloids in Kickxellales
Creators: name: Rassbach, Johannes
name: Hilsberg, Nathalie
name: Haensch, Veit G.
name: Dörner, Sebastian
name: Gressler, Julia
name: Sonnabend, Robin
name: Semm, Caroline
name: Voigt, Kerstin
name: Hertweck, Christian
name: Gressler, Markus
Publisher: name: figshare
Year: 2024
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Organic Chemistry
subject: FOS: Chemical sciences

description: Additional file 23: Figure S20. GC-MS/MS spectrum of IOL (2).
Orbital and physical parameters of eclipsing binaries from the ASAS catalogue - VIII. The totally-eclipsing double-giant system HD 187669
Creators: name: Hełminiak, K. G.
name: Graczyk, D.
name: Konacki, M.
name: Pilecki, B.
name: Ratajczak, M.
name: Pietrzyński, G.
name: Sybilski, P.
name: Villanova, S.
name: Gieren, W.
name: Pojmański, G.
name: Konorski, P.
name: Suchomska, K.
name: Reichart, D. E.
name: Ivarsen, K. M .
name: B., J.
name: Haislip
name: LaCluyze, A. P.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present the first full orbital and physical analysis of HD 187669, recognized by the All-Sky Automated Survey (ASAS) as the eclipsing binary ASAS J195222-3233.7. We combined multi-band photometry from the ASAS and SuperWASP public archives and 0.41-m PROMPT robotic telescopes with our high-precision radial velocities from the HARPS spectrograph. Two different approaches were used for the analysis: 1) fitting to all data simultaneously with the WD code, and 2) analysing each light curve (with JKTEBOP) and RVs separately and combining the partial results at the end. This system also shows a total primary (deeper) eclipse, lasting for about 6 days. A spectrum obtained during this eclipse was used to perform atmospheric analysis with the MOOG and SME codes in order to constrain physical parameters of the secondary. We found that ASAS J195222-3233.7 is a double-lined spectroscopic binary composed of two evolved, late-type giants, with masses of $M_1 = 1.504\pm0.004$ and $M_2=1.505\pm0.004$ M$_\odot$, and radii of $R_1 = 11.33\pm0.28$ and $R_2=22.62\pm0.50$ R$_\odot$, slightly less metal abundant than the Sun, on a $P=88.39$ d orbit. Its properties are well reproduced by a 2.38 Gyr isochrone, and thanks to the metallicity estimation from the totality spectrum and high precision in masses, it was possible to constrain the age down to 0.1 Gyr. It is the first so evolved galactic eclipsing binary measured with such a good accuracy, and as such is a unique benchmark for studying the late stages of stellar evolution.
description: Accepted for publication in MNRAS. 12 pages, 7 figures, 9 tables (Table 1 available in the online version of the journal)
Theoretical analysis of FMR-driven spin pumping current and its properties via Self-Consistent Harmonic Approximation
Creators: name: Moura, A. R.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We applied the Self-Consistent Harmonic Approximation (SCHA), combined with coherent states formalism, to study the ferromagnetic resonance (FMR) in a ferromagentic/normal metal junction. Due to the interface interaction, the FMR-generated spin current is injected from the magnetic insulator to the normal metal, the so-called spin pumping. Ordinarily, ferromagnetic models are described by bosonic representation or phenomenological theories; however, in a coherent magnetization state, the SCHA is the more natural choice to treat FMR problems. Over the years, the SCHA has successfully applied to investigate ferro and antiferromagnetism in a wide range of scenarios. The main point of the SCHA formalism involves the adoption of a quadratic model for which corrections are included through temperature-dependent renormalization parameters. Therefore, the SCHA is an efficient method for determining the properties of magnetically ordered phases. Using the SCHA, we obtained the temperature dependence of FMR-driven spin pumping. In addition, we found the spin-mix conductance, the additional damping from the angular momentum injection into the normal metal side, and the magnetic susceptibility. The SCHA outcomes are in remarkable agreement with the results of the literature.
description: 11 pages, 6 figures
Einfluss der Klimakrise auf das Sinnerleben junger Erwachsener
Creators: name: Zane, Sofia
name: Forstmeier, Simon
Publisher: name: Open Science Framework
Year: 2023
Subjects: subject: Developmental Psychology
subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology

description: This study is intended to be used in a master thesis. Through this study, psychological research on meaning in life and psychological research on climate change will be brought together. In this way, relevant fundamental mechanisms of this new field of research are to be uncovered to be able to develop important recommendations for future action.
Constructing nonstandard hulls and Loeb measures in internal set theories
Creators: name: Hrbacek, Karel
name: Katz, Mikhail G.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Logic (math.LO)
subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 26E35

description: Currently the two popular ways to practice Robinson's nonstandard analysis are the model-theoretic approach and the axiomatic/syntactic approach. It is sometimes claimed that the internal axiomatic approach is unable to handle constructions relying on external sets. We show that internal frameworks provide successful accounts of nonstandard hulls and Loeb measures. The basic fact this work relies on is that the ultrapower of the standard universe by a standard ultrafilter is naturally isomorphic to a subuniverse of the internal universe.
description: 34 pages, to appear in Bulletin of Symbolic Logic
The digital that invests in education. An inductive research on new digital educational models
Creators: name: Edvige, Danna
Publisher: name: ECOLHE
Year: 2023

description: Digital today is present in every context and has increased its opportunities for use and at the same time the risks of speculation and unethical uses. This research work will deal with educational actions in the digital age with the aim of analyzing three virtuous cases that have worked in the educational field, highlighting the potential and possible critical issues in order to transfer know-how for future projects. The analysis methodology used is of a qualitative nature through a mix of data collection tools, first of all a participating observation made in the first case study. Then you will apply a content analysis for the second observed case and finally you will conduct an interview with the organizer of the last examined educational project. Therefore, based on the Grounded Theory we will start from an empirical analysis of the data to arrive at conclusions and theories in view of the implementation of these particular models in other areas. Starting from the reflections of sociologists Franco Ferrarotti and Vanni Codeluppi, who frame the problem related to education above all by observing the digital context and the changes it brings, we will analyze empirically some virtuous models that use digital not only as a technological support, but as an ontological concept on which to base their innovative educational offerings. Specifically, we will observe the hybrid teaching methods used at the Talent Garden Innovation School, which offers digital professional teachers experts in the labor market. The second case analyses the innovative Treccani Scuola platform: a perfect example of a combination of innovation and tradition. Finally, the project Ma.L.L. Mo at the Heracle UniCusano Lab, a project that studies predictive models of learning motivation through algorithms of machine learning (AI), will be analyzed. Lastly a particular focus on the Ma.L.L. Mo at the Heracle UniCusano Lab a project that studies predictive models of learning motivation through machine learning algorithms (AI) and finally in the international context it will observe the Mit open courses and the TED platform that that distribute knowledge at high levels for free. The hope of this analysis is to be able to take interesting ideas to strengthen research in the field of digital education and put the ethical question of technological instrumentation at the center.
description: ECOLHE, ECOLHE International Conference Proceedings
European Higher Education in 2050: the vision, the evolution
Creators: name: Makrides, Gregory
Publisher: name: ECOLHE
Year: 2023

description: The European Higher Education and Research Area is going through a transformation process that will push Europe to a leading position on the way to a green digitalization of societies. The environment of learning, including methods and spaces is expected to change drastically. With knowledge of today’s technologies we can only imagine the future but the way forward is almost clear. In this paper we will attempt to describe the learning in the future in both school and higher education as their evolution needs to develop in parallel. The paper will utilize results from several EU funded projects, including, STEAME, STEAME-Hybrid, ONLIFE, STEAME-Students, BYOD, FACILIATET-AI, STEAME Teacher Facilitators Academy, and more.
description: ECOLHE, ECOLHE International Conference Proceedings
Promoting successful participation of people living with Alzheimer's disease and related dementias in pain-related neuroimaging research studies
Creators: name: Monroe, Todd B.
name: Iversen, Wm. Larkin
name: Moss, Karen O.
name: Cowan, Ronald L.
name: Atalla, Sebastian
name: Wright, Kathy D.
name: Anderson, Alison R.
name: Failla, Michelle D.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2022

description: Recruitment and retention of participants for pain-related neuroimaging research is challenging and becomes increasingly so when research participants have a diagnosis of Alzheimer's disease and related dementias (ADRD). This article shares the authors' recommendations from several years of successful recruitment and completion of pain-related neuroimaging studies of people living with ADRD and includes supportive literature. While not an exhaustive list, this review covers several topics related to recruitment and retention of participants living with ADRD, including community engagement, capacity to consent, dementia diagnostic criteria, pain medication and other study exclusion criteria, participant and caregiver burden, communication concerns, and relationships with neuroimaging facilities. Threaded throughout the paper are important cultural considerations. Additionally, we discuss implications of the coronavirus (COVID-19) pandemic for recruitment. Once tailored to specific research study protocols, these proven strategies may assist researchers with successfully recruiting and retaining participants living with ADRD for pain-related neuroimaging research studies toward improving overall health outcomes.
Ptychographic reconstruction with wavefront initialization
Creators: name: Wittwer, Felix
name: Modregger, Peter
Publisher: name: arXiv
Year: 2022
Subjects: subject: Image and Video Processing (eess.IV)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Optics (physics.optics)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Physical sciences

description: X-ray ptychography is a cutting edge imaging technique providing ultra-high spatial resolutions. In ptychography, phase retrieval, i.e., the recovery of a complex valued signal from intensity-only measurements, is enabled by exploiting a redundancy of information contained in diffraction patterns measured with overlapping illuminations. For samples that are considerably larger than the probe we show that during the iteration the bulk information has to propagate from the sample edges to the center. This constitutes an inherent limitation of reconstruction speed for algorithms that use a flat initialization. Here, we experimentally demonstrate that a considerable improvement of computational speed can be achieved by utilizing a low resolution sample wavefront retrieved from measured diffraction patterns as initialization. In addition, we show that this approach avoids phase singularity artifacts due to strong phase gradients. Wavefront initialization is computationally fast and compatible with non-bulky samples. Therefore, the presented approach is readily adaptable with established ptychographic reconstruction algorithms implying a wide spread use.
From descriptive connectome to mechanistic connectome: Generative modeling in functional magnetic resonance imaging analysis
Creators: name: Yap, Pew-Thian
name: Li, Guoshi
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2022

description: As a newly emerging field, connectomics has greatly advanced our understanding of the wiring diagram and organizational features of the human brain. Generative modeling-based connectome analysis, in particular, plays a vital role in deciphering the neural mechanisms of cognitive functions in health and dysfunction in diseases. Here we review the foundation and development of major generative modeling approaches for functional magnetic resonance imaging (fMRI) and survey their applications to cognitive or clinical neuroscience problems. We argue that conventional structural and functional connectivity (FC) analysis alone is not sufficient to reveal the complex circuit interactions underlying observed neuroimaging data and should be supplemented with generative modeling-based effective connectivity and simulation, a fruitful practice that we term “mechanistic connectome.” The transformation from descriptive connectome to mechanistic connectome will open up promising avenues to gain mechanistic insights into the delicate operating principles of the human brain and their potential impairments in diseases, which facilitates the development of effective personalized treatments to curb neurological and psychiatric disorders.
DESI Index in Higher Education. A sociological reflection for digital media inclusion
Creators: name: Cortoni, Ida
Publisher: name: ECOLHE
Year: 2023

description: In recent years, the Italian public University has experienced an acceleration of the digitalization process, also thanks to its response to the health emergency generated by COVID Sars 19 in 2020. Specifically, in recent years it has invested above all in technological-infrastructural equipment in order to guarantee educational and administrative continuity at a distance. This has contributed to strengthening the connectivity of universities, which is one of the indicators underlying the European DESI INDEX. The use of technological devices as educational and communicative mediators has inevitably led to a technical and technological literacy of the teaching and administrative staff, enabling an implementation of the human capital of the DESI INDEX itself, albeit from an experiential perspective. This digitalization process, however, has not always ensured a consequent process of didactic integration of technology, i.e. a process of normalization of the same that would induce an updating of teaching and knowledge transmission methodologies, helping to implement the soft digital skills of educators and students themselves. This gap has left open a challenge of reflection and research precisely on didactic design and experimentation through the use of technologies in the perspective of digital education, as well as on the critical and safety component underlying the sharing of data and online information. The abstract intends to propose a reflection on the implications of the application of digital education in universities as an innovative didactic methodology for enhancing the soft skills of teachers and students in the perspective of onlife-education.
description: ECOLHE, ECOLHE International Conference Proceedings
Socio-economic and ecological drivers of demersal fish community catch across productive shelf regions
Creators: name: van Denderen, P Daniel
name: Collie, Jeremy S
name: Hamon, Katell G
Publisher: name: Zenodo
Year: 2023
Subjects: Fisheries catch
Socio-economic
Biological productivity
Demersal fish

description: Presentation at the 5th International Symposium on the Effects of Climate Change on the World’s Ocean. We conduct a comparative ecosystem analysis to examine the relative importance of socio-economic and ecological drivers on demersal catch. This analysis is done across productive shelf regions in the North Atlantic and Northeast Pacific.
Intervalence Charge Transfer luminescence: The anomalous luminescence of Cerium-doped Cs2LiLuCl6 elpasolite
Creators: name: Seijo, Luis
name: Barandiaran, Zoila
Publisher: name: arXiv
Year: 2014
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The existence of intervalence charge transfer (IVCT) luminescence is reported. It is shown that the so called anomalous luminescence of Ce-doped elpasolite Cs2LiLuCl6, which is characterized mainly by a very large Stokes shift and a very large band width, corresponds to an IVCT emission in Ce3+-Ce4+ pairs, from the 5deg orbital of Ce3+ to 4f orbitals of Ce4+. Its Stokes shift is the sum of the large reorganization energies of the Ce4+ and Ce3+ centers formed after the fixed-nuclei electron transfer and it is equal to the energy of the IVCT absorption commonly found in mixed-valence compounds, which is predicted to exist in this material and to be slightly larger than 10000 cm-1. The large band width is the consequence of the large offset between the minima of the Ce3+-Ce4+ and Ce4+-Ce3+ pairs along the electron transfer reaction coordinate. This offset is approximately 2*sqrt(3) times the difference of Ce-Cl equilibrium distances in the Ce3+ and Ce4+ centers. It is shown that the energies of the peaks and the widths of IVCT absorption and emission bands can be calculated ab initio with reasonable accuracy from diabatic energy surfaces of the ground and excited states and that these can be obtained, in turn, from independent calculations on the donor and acceptor active centers. We obtained the energies of the Ce3+ and Ce4+ active centers of Ce-doped Cs2LiLuCl6 by means of state-of-the-art wave-function-theory spin-orbit coupling relativistic calculations on the donor cluster (CeCl6Li6Cs8)11+ and the acceptor cluster (CeCl6Li6Cs8)12+ embedded in a quantum mechanical embedding potential of the host. The calculations provide interpretations of unexplained experimental observations as due to higher energy IVCT absorptions, and allow reinterpreting others. The existence of another IVCT emission of lower energy, at around 14000-16000 cm-1 less than the 5dt2g emission, is also predicted.
description: Accepted for publication in J. Chem. Phys
Generalized Parton Distributions of proton for non zero skewness in transverse and longitudinal position spaces
Creators: name: Kumar, Narinder
name: Dahiya, Harleen
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the Generalized Parton Distributions(GPDs) of proton by expressing them in terms of overlaps of light front wave functions (LFWFs) using a simulated model which is able to qualitatively improve the convergence near the end points of $x$. We study the spin non-flip $H(x, ζ, t)$ and spin flip $E(x, ζ, t)$ part of GPDs for the particle conserving $n \rightarrow n$ overlap in the DGLAP region $(ζ
description: 16 pages, 6 figures. arXiv admin note: text overlap with arXiv:hep-ph/0611159, arXiv:0907.1998, arXiv:hep-ph/0412004 by other authors
title: Unified Framework for robust Microservice Communication
Creators: name: Allacher, Alexander
Publisher: name: TU Wien
Year: 2023
Subjects: subject: microservice
subject: robustness
subject: code generation
subject: domain specific language

description: Microservices architectures have become a prevalent approach in software development, offering scalability, loose coupling, and maintainability. This approach allows us to build systems systems as sets of small, independently deployable services that communicate through lightweight mechanisms. However, the distributed nature of microservices presents challenges, particularly in communication. Traditional synchronous communication, such as REST, can lead to temporal coupling and cascading failures. Asynchronous communication, on the other hand, presents its own set of challenges, including the need for message brokers and a different way of thinking about interactions. This thesis introduces a domain-specific language (DSL) that defines microservice communication, aiming to bridge the gap between these two communication paradigms while focusing on robustness. By leveraging engineering research methodology, we identified essential aspects of mi- croservice communication and integrated them into a unified framework. This framework, powered by the DSL, aims to generate most of the necessary code, reducing the risk of common pitfalls. To validate the proposed DSL and framework, we evaluate its applicability using various open-source projects. The evaluation focuses on robustness, reusability of interface definitions, and asynchronicity, and it demonstrates how oversights in these projects could have been avoided. As most of the analyzed projects are only for demonstration purposes, the results might have limited applicability in real-world scenarios, but on the other hand, these demonstration projects are there for a reason, so developers can learn how to create microservice architectures. In conclusion, while the thesis presents a promising approach to harmonize synchronous and asynchronous communication in microservices, further research is needed, especially in areas like communication with external services.
Colloidal transport in twisted lattices of optical tweezers
Creators: name: Stuhlmüller, Nico C. X.
name: Fischer, Thomas M.
name: Heras, Daniel de las
Publisher: name: arXiv
Year: 2022
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We simulate the transport of colloidal particles driven by a static and homogeneous drift force, and subject to the optical potential created by two lattices of optical tweezers. The lattices of optical tweezers are parallel to each other, shifted, and rotated by a twist angle. Due to a negative interference between the potential of the two lattices, flat channels appear in the total optical potential. At specific twist angles, known as magic-angles, the flat channels percolate the entire system and the colloidal particles can then be transported using a weak external drift force. We characterize the transport in both square and hexagonal lattices of twisted optical tweezers
MPEC 2023-O107 : 2023 OU4
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 OU4

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Slow-Roll Inflation at N3LO
Creators: name: Auclair, Pierre
name: Ringeval, Christophe
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The next generation of cosmological observations will be sensitive to small deviations from a pure power law in the primordial power spectrum of the curvature perturbations. In the context of slow-roll inflation, these deviations are expected and correspond to the so-called running of the spectral index. Their measurement would bring as much information as the discovery of deviations from scale invariance. However, robust parameter inference requires to marginalize over any possible higher order uncertainties, which have been, up to now, not fully determined. We tackle this issue by deriving the inflationary scalar and tensor slow-roll power spectra at next-to-next-to-next to leading order (N3LO), fully expanded around an observable pivot wavenumber, for all single field inflationary models having minimal and non-minimal kinetic terms. Our result therefore encompasses string-inspired inflationary models having a varying speed of sound.
description: 23 pages, 2 ancillary python files and 0 figure, uses RevTex. Misprints corrected, matches published version
title:  Dal paradigma massa al paradigma del paradosso: la fuzzy media logic nella rappresentazione del terrorismo islamico
Creators: name: Ieracitano, Francesca
Publisher: name: Roma TrE-Press
Year: 2016

description: The crisis of dominant paradigms within communication research shows a lack of interpretative models useful to understand the media role within complex societies. A paradox paradigm seems to be, actually the best suited model to explain the contradictions produced by global culture. The aim of the paper is to analyze the traces of a fuzzy thinking in the way media logic represents phenomena like contemporary terrorism and they manages uncertainty. The fuzzy media logic could be better understood only through a cross‐media perspective which allow to capture different approach that digital media and media mainstream have with regard to the uncertainty created by the terrorism. A fuzzy logic model applied to mass media and digital media and their relationship with reality could be, also, a way of better understand ambivalence in the role of media and it could be a possible way to overtaking the paradigm crisis within communication research.
description: Democrazia e Sicurezza – 2016, n. 2
Design study for a 500 MeV positron beam at the Mainz Microtron MAMI
Creators: name: Backe, H.
name: Lauth, W.
name: Drexler, P.
name: Heil, P.
name: Klag, P.
name: Ledroit, B.
name: Stieler, F.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: A design study has been performed for a positron beam with an energy of 500 MeV to be realized at the applied physics area of the Mainz Microtron MAMI. Positrons will be created after pair conversion of bremsstrahlung, produced by the 855 MeV electron beam af MAMI in a tungsten converter target. From the two conceivable geometries (i) pair conversion in the bremsstrahlung converter target itself, and (ii) bremsstrahlung pair conversion in a separated lead foil, the former was considered in detail. Positrons will be energy selected within an outside open electron beam-line bending magnet, and bent back by an additional sector magnet. Magnetic focusing elements in between are designed to prepare in a well shielded positron target chamber about 6 m away from the target a beam with horizontal and vertical emittances of epsilon_v = 0.055 pi mm mrad (1 sigma), and epsilon_h = 0.12 pi mm mrad (1 sigma), respectively, for a 10 micro m thick amorphous tungsten target and negligible momentum spread. At an accepted positron band width of 1 MeV, spots are expected vertically with an angular spread of 0.064 mrad and a size of 5.0 mm (FWHM), and horizontally with an angular spread of 0.64 mrad and a size of 7.7 mm (FWHM). The positron yield amounts to 13.1 per second, 1 MeV positron energy band width, and 1 nA electron beam current.
description: 12 pages, 16 figures, submitted to The European Physical Journal D (EPJD)
Exploration of cerebral hemodynamic pathways through which large artery function affects neurovascular coupling in young women
Creators: name: Stoner, Lee
name: Meyer, Michelle L.
name: Keller, Allison P.
name: Lefferts, Wesley K.
name: DeBlois, Jacob P.
name: Heffernan, Kevin S.
name: Cilhoroz, Burak T.
name: Pagan Lassalle, Patricia
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2022

description: Background The interactions between large artery function and neurovascular coupling (NVC) are emerging as important contributors to cognitive health. Women are disproportionally affected by Alzheimer's disease and related dementia later in life. Understanding large artery correlates of NVC in young women may help with preservation of cognitive health with advancing age. Purpose To explore the association between large artery function, NVC and cognitive performance in young women. Methods Vascular measurements were made in 61 women (21 ± 4 yrs) at rest and during a cognitive challenge (Stroop task). Transcranial Doppler was used to measure left middle cerebral artery (MCA) maximum velocity (Vmax), mean velocity (Vmean), and pulsatility index (PI). NVC was determined as MCA blood velocity reactivity to the Stroop task. Large artery function was determined using carotid-femoral pulse wave velocity (cfPWV) as a proxy measure of aortic stiffness and carotid ultrasound-derived measures of compliance and reactivity (diameter change to the Stroop task). Cognitive function was assessed separately using a computerized neurocognitive battery that included appraisal of response speed, executive function, information processing efficiency, memory, attention/concentration, and impulsivity. Results MCA Vmax reactivity was positively associated with executive function (β = 0.26, 95% CI 0.01–0.10); MCA Vmean reactivity was negatively associated with response speed (β = −0.33, 95% CI −0.19 to −0.02) and positively with memory score (β = 0.28, 95% CI 0.01–0.19). MCA PI reactivity was negatively associated with attention performance (β = −0.29, 95% CI −14.9 to −1.0). Path analyses identified significant paths (p < 0.05) between carotid compliance and carotid diameter reactivity to select domains of cognitive function through MCA reactivity. Conclusions NVC was associated with cognitive function in young women. Carotid artery function assessed as carotid compliance and carotid reactivity may contribute to optimal NVC in young women through increased blood flow delivery and reduced blood flow pulsatility.
Activity-aware Mental Stress Detection Using Physiological Sensors
Creators: name: Feng-Tso  Sun
name: Kuo, Cynthia
name: Heng-Tze  Cheng
name: Senaka  Buthpitiya
name: Collins, Patricia
name: Griss, Martin L
Publisher: name: Figshare
Year: 2018
Subjects: subject: Computer Engineering
subject: 80309 Software Engineering
subject: FOS: Computer and information sciences

description: "Continuous stress monitoring may help users better understand
their stress patterns and provide physicians with more reliable data
for interventions. Previously, studies on mental stress detection were limited
to a laboratory environment where participants generally rested in
a sedentary position. However, it is impractical to exclude the effects of
physical activity while developing a pervasive stress monitoring application
for everyday use. The physiological responses caused by mental
stress can be masked by variations due to physical activity.
We present an activity-aware mental stress detection scheme. Electrocardiogram
(ECG), galvanic skin response (GSR), and accelerometer data
were gathered from 20 participants across three activities: sitting, standing,
and walking. For each activity, we gathered baseline physiological
measurements and measurements while users were subjected to mental
stressors. The activity information derived from the accelerometer enabled
us to achieve 92.4% accuracy of mental stress classification for
10-fold cross validation and 80.9% accuracy for between-subjects classi-
fication.
Searching for intermediate mass black holes: understanding the data first
Creators: name: Bianchini, Paolo
name: Norris, Mark
name: van de Ven, Glenn
name: Schinnerer, Eva
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The detection of intermediate mass black holes (IMBHs) in globular clusters has been hotly debated, with different observational methods delivering different outcomes for the same object. In order to understand these discrepancies, we construct detailed mock integral field spectroscopy (IFU) observations of globular clusters, starting from realistic Monte Carlo cluster simulations. The output is a data cube of spectra in a given field-of-view that can be analyzed in the same manner as real observations and compared to other (resolved) kinematic measurement methods. We show that the main discrepancies arise because the luminosity-weighted IFU observations can be strongly biased by the presence of a few bright stars that introduce a scatter in velocity dispersion measurements of several km/s. We show that this intrinsic scatter can prevent a sound assessment of the central kinematics, and therefore should be fully taken into account to correctly interpret the signature of an IMBH.
description: 4 pages, 2 figures. To be published in the Proceedings IAU Symposium No. 312, Star Clusters and Black Holes in Galaxies and Across Cosmic Time
Anubis: An Attestation Protocol for Distributed Context-Aware Applications
Creators: name: Senaka  Buthpitiya
name: Feng-Tso  Sun
name: Heng-Tze  Chen
name: Tague, Patrick
name: Griss, Martin L
name: Anind K Dey
Publisher: name: Figshare
Year: 2018
Subjects: subject: Computer Engineering
subject: 80309 Software Engineering
subject: FOS: Computer and information sciences

description: Sharing sensitive context information among multiple
distributed components in mobile environments introduces
major security concerns. The distributed sensing, processing and
actuating components of these applications can be compromised
and modified or impersonated to extract private and confidential
information or to inject false information. In this paper we
present the Anubis protocol for remote code attestation and
access control of distributed components using remote execution
of trusted code. Our Anubis protocol leverages previous work
in the fields of wireless sensor networks and secure web browsing.
Anubis allows new components to be introduced to
the environment without updating existing components. Our
implementation of Anubis in Android G1 based applications
shows that the protocol introduces manageable overhead (less
than 600 ms latency and 35 kB packet overhead) which does not
significantly impact the user experience.
Electroluminescence of monolayer WS$_2$ in a scanning tunneling microscope: the effect of bias polarity on the spectral and angular distribution of the emitted light
Creators: name: Román}, Ricardo Javier Peña
name: Pommier, Delphine
name: Bretel, Rémi
name: López, Luis E. Parra
name: Lorchat, Etienne
name: Chaste, Julien
name: Ouerghi, Abdelkarim
name: Moal, Séverine Le
name: Boer-Duchemin, Elizabeth
name: Dujardin, Gérald
name: Borisov, Andrey G.
name: Zagonel, Luiz F.
name: Schull, Guillaume
name: Berciaud, Stéphane
name: Moal, Eric Le
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Inelastic electron tunneling in a scanning tunneling microscope (STM) is used to generate excitons in monolayer tungsten disulfide (WS$_2$). Excitonic electroluminescence is measured both at positive and negative sample bias. Using optical spectroscopy and Fourier-space optical microscopy, we show that the bias polarity of the tunnel junction determines the spectral and angular distribution of the emitted light. At positive sample bias, only emission from excitonic species featuring an in-plane transition dipole moment is detected. Based on the spectral distribution of the emitted light, we infer that the dominant contribution is from charged excitons, i.e., trions. At negative sample bias, additional contributions from lower-energy excitonic species are evidenced in the emission spectra and the angular distribution of the emitted light reveals a mixed character of in-plane and out-of-plane transition dipole moments.
Lessons learned for surveillance system strengthening through capacity building and partnership engagement in post-Ebola Guinea, 2015–2019
Creators: name: Bah, Souleymane
name: Standley, Claire J.
name: Diallo, Ibrahima Telly
name: Keita, Sakoba
name: Souare, Ousmane
name: Kone, Moussa
name: Martel, Lise D.
name: Stolka, Kristen B.
name: Reynolds, Eileen
name: MacDonald, Pia D. M.
name: Hemingway-Foday, Jennifer J.
name: Compaore, Salomon
name: Diallo, Boubacar Ibrahima
name: Kaba, Almamy K.
name: Bah, Marlyatou
name: Wone, Abdoulaye
name: Tchwenko, Samuel
name: Keita, Lamine
name: Camara, Djiguiba
name: Bah, Mariama B.
name: Worrell, Mary Claire
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2022

description: The 2014–2016 Ebola outbreak in Guinea revealed systematic weaknesses in the existing disease surveillance system, which contributed to delayed detection, underreporting of cases, widespread transmission in Guinea and cross-border transmission to neighboring Sierra Leone and Liberia, leading to the largest Ebola epidemic ever recorded. Efforts to understand the epidemic's scale and distribution were hindered by problems with data completeness, accuracy, and reliability. In 2017, recognizing the importance and usefulness of surveillance data in making evidence-based decisions for the control of epidemic-prone diseases, the Guinean Ministry of Health (MoH) included surveillance strengthening as a priority activity in their post-Ebola transition plan and requested the support of partners to attain its objectives. The U.S. Centers for Disease Control and Prevention (US CDC) and four of its implementing partners—International Medical Corps, the International Organization for Migration, RTI International, and the World Health Organization—worked in collaboration with the Government of Guinea to strengthen the country's surveillance capacity, in alignment with the Global Health Security Agenda and International Health Regulations 2005 objectives for surveillance and reporting. This paper describes the main surveillance activities supported by US CDC and its partners between 2015 and 2019 and provides information on the strategies used and the impact of activities. It also discusses lessons learned for building sustainable capacity and infrastructure for disease surveillance and reporting in similar resource-limited settings.
Edge States of α-Bismuthene Nanostructures
Creators: name: Salehitaleghani, Sara
name: Maerkl, Tobias
name: Kowalczyk, Pawel J
name: Ster, Maxime Le
name: Wang, Xiaoxiong
name: Bian, Guang
name: Chiang, Tai-Chang
name: Brown, Simon A
Publisher: name: arXiv
Year: 2023
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We present a systematic investigation of the edge states of two-dimensional α-bismuthene (α-Bi) structures self-assembled on HOPG substrates, using scanning tunnelling microscopy and scanning tunnelling spectroscopy. The measurements are carried out for 3ML, 5ML and 7ML thick Bi structures. Our spectroscopy studies reveal clear features at the edges of the 5ML and 7ML thick structures, and the positions of the edge states (ESs) coincide with the topographical step edges. In contrast, in 3ML structures the ESs appear to be absent and instead new states are sometimes observed, far from the topographical edge. These states are associated with a moiré pattern and result from strain-induced modulation of the topology. Our observations demonstrate the impact on the edge states of coupling to adjacent structures.
description: 17 pages, 6 figures
Estrogen mediates inflammatory role of mast cells in endometriosis pathophysiology
Creators: name: McCallion, Alison
name: Nasirzadeh, Yasmin
name: Tayade, Chandrakant
name: Bidarimath, Mallikarjun
name: Sisnett, Danielle J.
name: Lingegowda, Harshavardhan
name: Ahn, SooHyun
name: Lessey, Bruce A.
name: Koti, Madhuri
name: Monsanto, Stephany P.
name: Young, Steven L.
name: Craig, Andrew W.
name: Khalaj, Kasra
name: Miller, Jessica E.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2022

description: Endometriosis is an estrogen dependent, chronic inflammatory disease characterized by the growth of endometrial lining outside of the uterus. Mast cells have emerged as key players in regulating not only allergic responses but also other mechanisms such as angiogenesis, fibrosis, and pain. The influence of estrogen on mast cell function has also been recognized as a potential factor driving disease pathophysiology in number of allergic and chronic inflammatory conditions. However, precise information is lacking on the cross talk between endocrine and immune factors within the endometriotic lesions and whether that contributes to the involvement of mast cells with disease pathophysiology. In this study, we observed a significant increase in mast cell numbers within endometriotic lesions compared to matched eutopic endometrium from the same patients. Compared to eutopic endometrium, endometriotic lesions had significantly higher levels of stem cell factor (SCF), a potent growth factor critical for mast cell expansion, differentiation, and survival for tissue resident mast cells. Targeted mRNA Q-PCR array revealed that the endometriotic lesions harbour microenvironment (upregulation of CPA3, VCAM1, CCL2, CMA1, CCR1, and KITLG) that is conducive to mast cells recruitment and subsequent differentiation. To examine cross-talk of mast cells within the endometriotic lesion microenvironment, endometriotic epithelial cells (12Z) and endometrial stromal cells (hESC) incubated with mast cell-conditioned media showed significantly increased production of pro-inflammatory and chemokinetic cytokines. To further understand the impact of estrogen on mast cells in endometriosis, we induced endometriosis in C57BL/6 mice. Mature mast cells were significantly higher in peritoneal fluid of estrogen-treated mice compared to untreated mice within the sham operated groups. Mouse endometriotic lesion tissue revealed several genes (qRT-PCR) relevant in mast cell biology significantly upregulated in the estrogen treated, endometriosis-induced group compared to control endometrium. The endometriotic lesions from estrogen treated mice also had significantly higher density of Alcian blue stained mast cells compared to untreated lesions or control endometrium. Collectively, these findings suggest that endometriotic lesions provide a microenvironment necessary for recruitment and differentiation of mast cells. In turn, mast cells potentially release pro-inflammatory mediators that contribute to chronic pelvic pain and endometriosis disease progression.
Perceived effect of warning label on parental food purchasing and drivers of food selection among South African parents–An exploratory study
Creators: name: Taillie, Lindsey Smith
name: Bopape, Makoma
name: Swart, Rina
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2022

description: Household food purchasing decision is a complex process influenced by factors such as marketing, cost, children food preference and parental choices. Most food products targeted toward children are unhealthy and are aggressively marketed to increase desirability among parents and children making healthier food selection even harder. The warning label (WL) is identified as a simple front-of-package labeling format that assist consumers to easily identify unhealthy foods and reduce their purchasing. This was a qualitative study that aimed to investigate the perceived effect of the warning label (WL) on parental food purchasing and drivers of food selection among parents. The study was conducted in a mainly rural part of South Africa, in Limpopo Province. Data were collected from 44 adult participants, all parents with children aged below 16 years selected using the snowball sampling method. Seven focus groups diversified according to age, literacy, income and urbanicity were utilized for data collection. Using a focus group discussion guide, parents were shown images of six products (crisps, soda, juice, biscuits, cereals, and yogurt) superimposed with the WL and questions asked were based on those images. Thematic analysis revealed that although some parents felt undeterred by the WL, some felt they would alter their food purchasing in the presence of the WL. Other parents felt they would reduce the frequency or the amount purchased or completely stop purchasing labeled products for their children. Motives behind perceived behavior modification included children's health being perceived as a priority and labeled products being viewed as unhealthy. Factors such as pressure from children, taste, poor nutrition knowledge and affordability seemed to influence parental food selection. These findings have important policy implications by providing evidence to policymakers that the WL may alter parental food purchasing and also provide insight into drivers of food selection among South African parents.