cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Dynamic Voltage and Frequency Scaling for Intermittent Computing
Creators: name: Maioli, Andrea
name: Quinones, Kevin A.
name: Ahmed, Saad
name: Alizai, Muhammad H.
name: Mottola, Luca
Publisher: name: arXiv
Year: 2024
Subjects: subject: Hardware Architecture (cs.AR)
subject: Operating Systems (cs.OS)
subject: FOS: Computer and information sciences

description: We present hardware/software techniques to intelligently regulate supply voltage and clock frequency of intermittently-computing devices. These devices rely on ambient energy harvesting to power their operation and small capacitors as energy buffers. Statically setting their clock frequency fails to capture the unique relations these devices expose between capacitor voltage, energy efficiency at a given operating frequency, and the corresponding operating range. Existing dynamic voltage and frequency scaling techniques are also largely inapplicable due to extreme energy scarcity and peculiar hardware features. We introduce two hardware/software co-designs that accommodate the distinct hardware features and function within a constrained energy envelope, offering varied trade-offs and functionalities. Our experimental evaluation combines tests on custom-manufactured hardware and detailed emulation experiments. The data gathered indicate that our approaches result in up to 3.75x reduced energy consumption and 12x swifter execution times compared to the considered baselines, all while utilizing smaller capacitors to accomplish identical workloads.
Οι αντιλήψεις των εκπαιδευτικών για την ηγεσία και ο τρόπος που επηρεάζει την συμπεριφορά των μαθητών: Η μελέτη της ηγεσίας σε κλασικά παραμύθια
Creators: name: Οικονόμου, Ξανθή Χρήστου
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: Τύποι ηγεσίας
Αφήγηση ιστοριών
Κλασικά παραμύθια
Types of leadership
Storytelling
Classic tales

description: Στη συγκεκριμένη διπλωματική εργασία αρχικά γίνεται μια εκτενής βιβλιογραφική ανασκόπηση για να διασαφηνιστούν όροι όπως ο ηγέτης, η ηγεσία, οι τύποι ηγεσίας, σχετικές τυπολογίες, αλλά και η προσφορά της αφήγησης στη μάθηση (storytelling). Στην πορεία ακολουθεί η εμπειρική έρευνα με ποιοτική μέθοδο. Πιο συγκεκριμένα, έχουν μελετηθεί οι αντιλήψεις των εκπαιδευτικών για την ηγεσία, οι τύποι ηγεσίας που προτιμούν οι εκπαιδευτικοί, η αφήγηση ως μέσο για την αντίληψη στάσεων των μαθητών καθώς και οι τύποι ηγεσίας που αντιλαμβάνονται οι μαθητές. Πραγματοποιήθηκε ποιοτική έρευνα με ερευνητικό εργαλείο τις ημι – δομημένες συνεντεύξεις και το πείραμα σε μαθητές πρωτοβάθμιας που υλοποιήθηκε με την υποστήριξη δώδεκα εκπαιδευτικών, οι οποίοι πριν τη συνέντευξη είχαν χρησιμοποιήσει την αφήγηση ιστοριών στους μαθητές τους και συζήτησαν αντίστοιχα μαζί τους ορισμένα θέματα που είχαν προσδιοριστεί κατά το σχεδιασμό της εμπειρικής έρευνας. Αρχικά, διερευνήθηκαν οι απόψεις των εκπαιδευτικών για την αποτελεσματικότητα της ηγεσίας στην εκπαίδευση, τους τύπους ηγεσίας που προτιμούν και την αφήγηση ως μέσο διδασκαλίας. Επιπρόσθετα οι εκπαιδευτικοί μετέφεραν τις απόψεις των μαθητών σχετικά με τους τύπους ηγεσίας που προτιμούν, όπως αυτές προέκυψαν, σχολιάζοντας τα παραμύθια «ο Τζακ και η φασολιά» και «Ρομπέν των δασών» μέσα στην τάξη.
description: In this particular dissertation, an extensive literature review is initially carried out to clarify terms such as leader, leadership, types of leadership, relevant typologies and also the contribution of storytelling to learning. Empirical research with a qualitative method follows along the way. More specifically, teachers' perceptions of leadership, the types of leadership preferred by teachers, storytelling as a means of perceiving student attitudes, and the types of leadership perceived by students have been studied. Qualitative research was carried out with research tools: semi-structured interviews and the experiment with primary school students, which was implemented with the support of twelve teachers, who before the interview had used storytelling with their students and discussed with them some issues that had been identified during the empirical research design. First, teachers' views on the effectiveness of leadership in education, the types of leadership they prefer and storytelling as a teaching medium were explored. In addition, the teachers conveyed the students' opinions about their preferred leadership types as they were elicited by commenting on the stories "Jack and the Beanstalk" and "Robin Hood" in the classroom.
Loop-Mediated Isothermal Amplification for Diagnosis of Major Infectious Diseases in Resource-Limited Settings
Creators: name: Mintchev, Paul
Publisher: name: Graduate Studies
Year: 2015
Subjects: subject: Engineering--Biomedical
subject: Biomedical Engineering
subject: FOS: Medical engineering
subject: Medical Diagnostics
subject: Microbiology
subject: FOS: Biological sciences

description: Major Infectious Diseases (MIDs) continue to pose major global health-care challenges in 2015, particularly in resource-limited settings. Alongside the recent global Human Immu-nodeficieny Virus (HIV)/Acquired Immunodeficieny Syndrome (AIDS) pandemic, there has been a marked resurgence in fatalities related to Malaria and Leishmaniasis in Lower-to-Middle-Income Countries (LMICs). With the recent development of Loop-Mediated Isothermal Amplification (LAMP), researchers are hoping to bring rapid and inexpensive point-of-care diagnostics, based on nucleic acid amplification, to LMIC settings. We ex-plored the possibility of a portable, low-cost LAMP-based diagnostic device targeting HIV, Malaria, and Leishmaniasis, for use in resource-limited settings, in an idealized proof-of-concept study. Design and build an inexpensive functional prototype with the potential to quantify disease severity that demonstrates the feasibility of this diagnostic tool for the desired application was the primary outcome; however, much work remains to be done in order to optimize the method to a reliable and repeatable clinical tool.
“Ethnic Media, Identity, and Community: A Case Study of the “Koleso” Newspaper”
Creators: name: Jukova, Lolita
Publisher: name: Graduate Studies
Year: 2013
Subjects: subject: Journalism
subject: Media
subject: Ethnic
subject: Community

description: The purpose of this study was to identify community and identity based connections that the “Koleso” newspaper creates for its readership - the Calgary Russian-speaking community. By applying a variety of different research methods such as content analysis of the “Koleso” newspaper, focus groups and an interview with the Editor-in-Chief, within the core and ethnic identity theoretical framework, I demonstrate that the “Koleso” creates for its readership connections in time and space and preserve elements of their multiple identities. The subject of Canadian ethnic media in general and the Russian ethnic print media in Canada in particular remains not well-enough researched. This thesis, therefore, contributes to an overall study of ethnic media by providing a unique perspective on a particular Russian ethnic publication and its influence on building multiple identities and connections with the Russian-speaking audience in Calgary.
Maneuvering Mechanisms for Omnidirectional Robots using Semi-circular Mecanum Wheels
Creators: name: Guzman Franco, Victor Hugo
Publisher: name: Graduate Studies
Year: 2015
Subjects: subject: Engineering--Mechanical
subject: Semi-circular Mecanum Wheel
subject: Omnidirectional Ground Vehicles
subject: Ground Robot Maneuvering

description: The recently designed Semi-circular Mecanum Double Wheel (SMDW) is a type of wheel that provides vehicles with enhanced omnidirectional motion on rough terrain and obstacle overcoming capabilities. This thesis proposes a new maneuvering methodology that allows robots with SMDWs to overcome obstacles in diverse approach configurations allowing robots to select their position and orientation according to their environment. The techniques developed prior to this work considered only the obstacle overcoming in a lateral motion, significantly restricting the holonomic abilities of the device. The methodology proposed in this thesis considers the generation of cubic spline trajectories that connect the initial position and orientation of the robot with the target configurations and the SMDWs states necessary to perform the obstacle overcoming task. For the generation of those trajectories a Particle Swarm Optimization (PSO) search technique explores the navigation space of the robot in order to find suitable control point locations to achieve the required robot’s position and wheels states. The obtained trajectories were tested using a novel physical simulator that incorporates the effects of the peripheral rollers in order to evaluate the performance over a wide range of obstacles and terrain configurations. The new methodology provides an effective tool to enable robots using SMDWs to move and navigate more effectively in complex outdoor and indoor rough terrains.
Is PSR J0514$-$4002E in a PBH-NS binary?
Creators: name: Chen, Zu-Cheng
name: Liu, Lang
Publisher: name: arXiv
Year: 2024
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Recent pulsar timing observations using MeerKAT of the eccentric binary millisecond pulsar, PSR J0514$-$4002E, have unveiled a companion with a mass in the mass gap, ranging from $2.09\, M_\odot$ to $2.71\, M_\odot$. This challenges conventional astrophysical scenarios for black hole formation. In this paper, we present an alternative explanation: PSR J0514$-$4002E could be in a PBH-NS binary, with the companion potentially being a primordial black hole formed during the early Universe's first-order phase transition. The associated stochastic gravitational-wave background generated during this phase transition can account for the observed signal from the pulsar timing array, and the abundance of primordial black holes is consistent with constraints from LIGO-Virgo-KAGRA.
description: 6 pages, 3 figures, version accepted for publication in Sci. China Phys. Mech. Astron. (SCPMA);
The Metal-Ion Binding Properties and Target-Binding Abilities of Helix-Loop-Helix EF-hand Proteins
Creators: name: Gifford, Jessica
Publisher: name: Graduate Studies
Year: 2013
Subjects: subject: Biochemistry
subject: calcium-binding proteins
subject: Nuclear Magnetic Resonance Spectroscopy
subject: protein-protein interactions
subject: protein-metal-ion interactions
subject: Calcium signaling

description: The EF-hand calcium-binding motif plays an essential role in eukaryotic cellular signalling, and the proteins containing this motif constitute a large and functionally diverse family. The EF-hand is defined by the helix-loop-helix secondary structure as well as the ligands presented by the loop to bind the calcium ion, and the conformational change that accompanies calcium-binding to these sites facilitates calcium-dependent signalling. In this thesis, two critical characteristics pertaining to this class of proteins are examined. First, their ability to bind the activating calcium ion is studied using various biophysical techniques. The calcium-binding properties of human calcium- and integrin-binding protein 1 and two soybean calmodulin isoforms (one conserved and one divergent) were examined as well as the ability of these proteins to select against the chemically similar magnesium cation. Not unexpectedly, our results point to an intimate link between the calcium affinity of a given EF-hand and the physiological role of the protein. Second, the structural details of calcium-dependent intermolecular interactions between the cytosolic human EF-hand protein calmodulin and three known targets were determined in solution using nuclear magnetic resonance spectroscopy. Central to this research was the exploitation of calmodulin’s critical methionine residues to serve as probes for these interactions. The development of a novel methodology is described through which the solution structures of calcium-calmodulin:peptide complexes can be derived from a limited set of experimental restraints. This approach is then applied to study at a structural level the regulatory relationship between calmodulin and the leukocyte homing receptor L-selectin. Calmodulin inhibits the proteolysis of L-selectin’s extracellular domains through an unknown mechanism critical to understanding leukocyte trafficking. Our solution structure and accompanying biophysical study provide the first molecular insight into the emerging new role for calmodulin as a transmembrane signalling protein. Finally, research on one of the largest calcium-calmodulin:target complexes studied to date is presented, that between calmodulin and the intact immuno-protein lactoferrin. Taken together, this thesis serves to expand our knowledge in the field of eukaryotic EF-hand proteins as well as present experimental approaches for answering common questions in this area.
Οι τοιχογραφίες του νάρθηκα του παρεκκλησιού του Αγίου Νικολάου του καθολικού της Μονής Βατοπεδίου
Creators: name: Σεραφειμίδης, Κωνσταντίνος Δημητρίου
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: Μνημειακή ζωγραφική
Μεταβυζαντινή τέχνη
Ιερά Μεγίστη Μονή Βατοπεδίου
Monumental Paintings
Post-Byzantine art
Holy and Great Monastery of Vatopedi

description: Το ενδιαφέρον της παρούσας μεταπτυχιακής διπλωματικής εργασίας εστιάζεται στις τοιχογραφίες του νάρθηκα του παρεκκλησίου του Αγίου Νικολάου, που βρίσκεται νότια της λιτής του καθολικού της Μονής Βατοπεδίου. Οι τοιχογραφίες φιλοτεχνήθηκαν το 1802 πιθανότατα από τους μοναχούς, ζωγράφους και κατά σάρκα αδελφούς, Βενιαμίν (; - 1834) και Ζαχαρία (; - 1822), μέλη του καλλιτεχνικού εργαστηρίου των Γαλατσιάνων ζωγράφων. Στο πλαίσιο αυτό επιχειρήθηκε η συστηματική καταγραφή και μελέτη των τοιχογραφιών που φιλοτεχνήθηκαν στον νάρθηκα του Βατοπεδινού παρεκκλησίου, με τη χρήση των μεθοδολογικών εργαλείων της εικονογραφίας και της εικονολογίας. Κύριος στόχος ήταν η αναζήτηση των καλλιτεχνικών προτύπων των ζωγράφων και ο εντοπισμός επιμέρους στοιχείων της τέχνης τους, που υιοθετήθηκαν από την εικονογραφική παράδοση, από τις καλλιτεχνικές τάσεις της περιόδου (κυρίως επιδράσεις από τη δυτική εικαστική παράδοση), αλλά και από τα πρότυπα των σύγ-χρονών τους καλλιτεχνών που δραστηριοποιήθηκαν στον Άθω.
description: The interest of the particular master's thesis is focused on the frescoes of the narthex of the chapel of Agios Nikolaos, which is located in the south of the liti of catholicon of the Vatopedi Monastery. The mural paintings were painted in 1802 probably by the brothers, monks and painters, Beniamin (? - 1834) and Zacharias (? - 1822), members of the artistic workshop of the painters from Galatista. In this context, the systematic register and study of the frescoes of the narthex of the chapel of Agios Nikolaos was attempted, through the usage of the methodological tools of iconography and iconology. The main purpose of the thesis was the pursuit of the painters’ artistic standards and the tracking of their individual elements in art, which were adopted by the iconographic tradition, by the artistic trends of this period (mainly influences from Western art), but also by the standards of contemporary artists who worked in Athos.
BPS Spectrum, Indices and Wall Crossing in N=4 Supersymmetric Yang-Mills Theories
Creators: name: Sen, Ashoke
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Algebraic Geometry (math.AG)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: BPS states in N=4 supersymmetric SU(N) gauge theories in four dimensions can be represented as planar string networks with ends lying on D3-branes. We introduce several protected indices which capture information on the spectrum and various quantum numbers of these states, give their wall crossing formula and describe how using the wall crossing formula we can compute all the indices at all points in the moduli space.
description: LaTeX file, 33 pages, 15 figures
MPEC 2023-X59 : 2023 XX
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 XX

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.
Entanglement harvesting of circularly accelerated detectors with a reflecting boundary
Creators: name: Li, Runhu
name: Zhao, Zixu
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Physics (quant-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the properties of the transition probability for a circularly accelerated detector that interacts with the massless scalar fields in the presence of a reflecting boundary. As the trajectory radius increases, the transition probability may exhibit some peaks under specific conditions, which can lead to the possibility of the identical result for different trajectory radius with the same acceleration and energy gap. These behaviors can be characterized by certain critical values. Furthermore, we analyze the entanglement harvesting phenomenon for two circularly accelerated detectors with a boundary. We consider that the two detectors are rotating around a common axis with the same acceleration, trajectory radius and angular velocity. When the detectors are close to the boundary, there may exist two peaks in entanglement harvesting. Interestingly, as trajectory radius increases, entanglement harvesting in some situations first decreases to zero, then remains zero, and finally increases to a stable value. Our results show that the features observed properties of the detectors are closely related to the vacuum fluctuations of the field and states of the detectors. Under appropriate conditions, circular motion can be used to simulate the results of uniform acceleration.
description: 26 pages, 12 figures, 1 table
Characterization and modulation of adult pancreatic β-cell maturity
Creators: name: Szabat, Marta
Publisher: name: University of British Columbia
Year: 2010

description: The functional maturation and dedifferentiation of β-cells is central to diabetes pathogenesis and to beta-cell replacement therapy. Despite its importance, the dynamics of adult β-cell maturation remain poorly understood because it has previously been difficult to study the process directly. A novel dual fluorescent reporter lentiviral vector was developed capable of tracking the differentiation status of single β-cells in culture. Using this labeling tool, an immature β-cell state was identified in adult primary human and mouse islets and beta-cell lines. The immature β-cell state was characterized by Pdx1 promoter activity but undetectable insulin promoter activity. Lineage analysis of labeled single adult human, mouse and MIN6 β-cells revealed that a fraction of the immature β-cells underwent maturation over time in culture by robustly activating the insulin promoter. Immature beta-cells also exhibited a significantly downregulated profile of mature β-cell genes. These cells had increased proliferation and a reduced glucose-stimulated insulin secreting function. In order to manipulate the adult β-cell maturation state, a screen for candidate growth/differentiation factors using image-based approaches was performed. Activin A and its antagonist follistatin were found to modulate adult β-cell maturity. Activin A had a strong negative effect on β-cell maturity, reducing insulin promoter activity, insulin secretion and the expression of mature β-cell genes. Follistatin reversed the effects of endogenous activin A and augmented β-cell maturity. These results uncovered a local autocrine/paracrine regulatory mechanism that controls the maturation state of adult β-cells. In addition, gene expression profiling at the whole genome level was used to analyze purified immature and mature β-cells from humans, mice and the MIN6 β-cell line. These analyses revealed that immature β-cells have increased expression of multiple islet hormones and have enriched expression levels of many genes known to be involved in pancreatic development, stem cell plasticity, proliferation and apoptosis. Conversely, mature β-cells are enriched in genes related to maintaining the mature β-cell phenotype. Collectively, these experiments contribute to the understanding of maturation and plasticity of adult pancreatic β-cells. The results have significant implications for islet regeneration and for in vitro generation of functional β-cells to treat diabetes.
Partager le texte (DTS): rendre ses données interopérables
Creators: name: Romanello, Matteo
Publisher: name: Zenodo
Year: 2020
Subjects: distributed text services
interoperability
Text Encoding Initiative (TEI)

description: Présentation donnée le 15 décembre 2020 dans le cadre du programme Fondamentaux des Humanités numériques pour la recherche, organisé par Béatrice Joyeux Prunel et Simon Gabay de l'Université de Genève.
Re-Designing the Public Realm: Residential Communities as Urban Ecological Systems
Creators: name: Badescu, Sonia Cristina
Publisher: name: Environmental Design
Year: 2013
Subjects: subject: Architecture
subject: FOS: Civil engineering
subject: Urban and Regional Planning
subject: FOS: Social and economic geography
subject: Urban Ecology
subject: Urban Design
subject: Landscape Ecology

description: Residential neighborhoods’ public realm often has little regard for the integration of local ecology, social connectivity principles, or the relationship between urban form and the degree to which natural local ecosystems can be maintained and enhanced. This research looks at a framework for urban ecological interventions within the public realm, which integrates theories of landscape ecology, urban design and planning, setting the stage for a more liveable, sustainable and adaptable community. There is a focus on public realm improvements that may lead to its better use by the people and perhaps, the enhancement of a sense of community. Using a case study neighborhood in Calgary, this work applies principles enunciated in the theoretical background to an existing context through a design exercise.
John Goodricke, Edward Pigott, and Their Study of Variable Stars
Creators: name: French, L. M.
Publisher: name: arXiv
Year: 2012
Subjects: subject: History and Philosophy of Physics (physics.hist-ph)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: John Goodricke and Edward Pigott, working in York, England, between 1781 and 1786, determined the periods of variation of eclipsing binaries such as Algol and Beta Lyrae and speculated that the eclipses of Algol might be caused by a "dark body," perhaps even a planet. They also determined the periods of variation of the first two known Cepheid variables, the stars whose period-luminosity relation today enables astronomers to determine distances to distant galaxies. Goodricke holds special interest because he was completely deaf and because he died at the age of 21. The lives and work of these two astronomers are described.
description: 13 pages, 6 figures, in press, presented at the 100th Spring Meeting of the AAVSO, May 22, 2011
Uniform Moment Bounds for Generalized Jackson Networks in Multi-scale Heavy Traffic
Creators: name: Guang, Jin
name: Chen, Xinyun
name: Dai, J. G.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: We establish uniform moment bounds for steady-state queue lengths of generalized Jackson networks (GJNs) in multi-scale heavy traffic as recently proposed by Dai et al. [2023]. Uniform moment bounds lay the foundation for further analysis of the limit stationary distribution. Our result can be used to verify the crucial moment state space collapse (SSC) assumption in Dai et al. [2023] to establish a product-form limit of GJN in the multi-scale heavy traffic regime. Our proof critically utilizes the Palm version of the basic adjoint relationship (BAR) as developed in Braverman et al. [2023].
The Integration of the Internal Strategic and Operational Controls to Maintain Sustainability Performance: The Linkage of the Sustainability Reporting and Sustainability Performance to Pay Ratio, CEO Power, and the Board Diversity
Creators: name: Mahmoudian, Fereshteh
Publisher: name: Graduate Studies
Year: 2017
Subjects: subject: Education--Business
subject: Sustainability performance
subject: Executives' Compensation
subject: CEO power
subject: Corporate Social Responsibility
subject: Diversity

description: This dissertation consists of three studies on sustainability performance and the internal strategic and operational components that lead to higher sustainability performance. By applying a systems approach, the first paper demonstrates how the internal strategic and operational components predict sustainability performance and the quality of the sustainability reporting. I find that leading performers (companies with higher sustainability performance) employ systems that are more comprehensive at both the strategic and operational levels. Region of incorporation, business activities, financial variables, and firm size also play a role in achieving sustainability outcomes. Delving into the details of the strategic controls, the second paper investigates the determinants of the pay ratio (between executive managers and non-executive employees) and the influence of the ratio on sustainability performance. I find that the firm’s operational performance and the employees’ skills are positively associated with the pay ratio, but the higher the ratio between executive and non-executive compensation, the lower the sustainability performance. I conclude that a high relative pay ratio provides a tournament incentive for executives to increase the firm’s operational performance. However, the high pay ratio might also lead to non-executive employees’ dissatisfaction stemming from the perceived inequity in pay. In addition, high pay ratios are inconsistent with the values of a sustainable company. Rather than investigating compensation for all executives, the third paper narrows the focus to CEO compensation as a proxy for CEO power. Thus, the third paper examines the determinants of CEO power along with compensation committee members’ diversity in relation to sustainability performance. I find that CEO power is associated with the executives’ demographic structure. After controlling for a firm’s ownership structure and internal factors, including financial performance, I determine the short-term and long-term levels of CEO power. I investigate whether CEO power, along with compensation committee members’ diversity, is associated with firms’ sustainability performance. I find that CEO power (both short term and long term) is significantly associated with sustainability performance. Moreover, I find mostly positive, albeit weak associations between compensation committee members’ diversity and sustainability performance.
The Penn State-Torun Centre for Astronomy Planet Search stars. I. Spectroscopic analysis of 348 red giants
Creators: name: Zielinski, P.
name: Niedzielski, A.
name: Wolszczan, A.
name: Adamow, M.
name: Nowak, G.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present basic atmospheric parameters (Teff, logg, vt and [Fe/H]) as well as luminosities, masses, radii and absolute radial velocities for 348 stars, presumably giants, from the ~1000 star sample observed within the Penn State-Torun Centre for Astronomy Planet Search with the High Resolution Spectrograph of the 9.2m Hobby-Eberly Telescope. The stellar parameters are key ingredients in proper interpretation of newly discovered low-mass companions while a systematic study of the complete sample will create a basis for future statistical considerations concerning low-mass companions appearance around evolved low and intermediate-mass stars. The atmospheric parameters were derived using a strictly spectroscopic method based on the LTE analysis of equivalent widths of FeI and FeII lines. With existing photometric data and the Hipparcos parallaxes we estimated stellar masses and ages via evolutionary tracks fitting. The stellar radii were calculated from either estimated masses and the spectroscopic logg or from the spectroscopic Teff and estimated luminosities. The absolute radial velocities were obtained by cross-correlating spectra with a numerical template. We completed the spectroscopic analysis for 332 stars of which 327 were found to be giants. For the remaining 16 stars with incomplete data a simplified analysis was applied. The results show that our sample is composed of stars with Teff = 4055-6239 K, logg = 1.39-4.78 (5 dwarfs were identified), logL/Lo = -1.0-3, M = 0.6-3.4 Mo, R = 0.6-52 Ro. The stars in our sample are generally less metal abundant than the Sun with median [Fe/H] = -0.15. The estimated uncertainties in the atmospheric parameters were found to be comparable to those reached in other studies. However, due to lack of precise parallaxes the stellar luminosities and, in turn, the masses are far less precise, within 0.2 Mo in best cases, and 0.3 Mo on average.
description: 31 pages, 19 figures, 10 tables, accepted for publication in A&A
Adsorption of Methyl Orange on Activated Carbon: Influence of Cerium Oxide Loading
Creators: name: Puthoor, Sreelakshmi
Publisher: name: Graduate Studies
Year: 2017
Subjects: subject: Engineering--Chemical
subject: Adsorption
subject: Activated Carbon
subject: Cerium Oxide

description: Adsorption by carbon is a commonly used treatment method for the removal of organic contaminants from waste water. The surface properties of activated carbon can be modified to enhance their adsorption affinity for target contaminants. In this study, the influence of cerium oxide loading onto carbon materials with different pore sizes in improving their adsorption capacity for methyl orange, which is an anionic organic pollutant, was analyzed. The adsorption capacity was increased by seven times after cerium oxide loading in mesoporous carbon materials at a pH of 5, whereas in microporous materials there was no notable increase in adsorption capacity. Also, the increase in adsorption capacity was directly proportional to the weight percentage of cerium oxide loading in the mesoporous activated carbon material. Methyl orange adsorbs on cerium oxide through electrostatic interactions. More specifically, the anionic methyl orange is attracted to the localized positive charges on the cerium oxide supported on the carbon materials. Decreasing pH resulted in an increased adsorption capacity likely because of the abundance of protons in the solution, causing an increase in localized positive charge density on the cerium oxide. Results from this study may be extended to more complex systems, such as the adsorption of naphthenic acids contained in oil sands process water.
Regulatory Immune-Responses Occurring within the Liver Downstream of Hepatic iNKTcell activation
Creators: name: Almishri, Wagdi
Publisher: name: Graduate Studies
Year: 2015
Subjects: subject: Pathology
subject: iNKT
subject: liver injury
subject: anti-inflammatory
subject: hepatitis
subject: alpha-galactosylceramide
subject: Bregs
subject: CD73
subject: IL-22
subject: IL-22BP
subject: Innate immunity
subject: PD-L1
subject: IL-10
subject: Hepatitis C
subject: hepatitis B
subject: PSC
subject: PBC
subject: AIH
subject: Regulatory
subject: innate-like
subject: Marginal zone B cells
subject: B1 B cells
subject: TGF-B

description: Despite its` high prevalence, the pathogenesis of immune-mediated liver injury is poorly understood. Invariant Natural killer T (iNKT) cells are a distinct innate immune T cell believed to orchestrate a balance between pro-and-anti-inflammatory responses within the liver during immune mediated liver injury. However, the regulatory roles of iNKT cells in the modulation of the hepatic immune response are still poorly defined. In this work we utilized the alpha-galactosylceramide-induced hepatitis model, a model of specific iNKT cell activation, to help us dissect basic immune regulatory mechanisms occurring in the liver during hepatic innate immune activation. We have now documented the rapid recruitment and activation of innate-like regulatory B cells in the liver subsequent to iNKT cell activation. These regulatory B cells were recruited from the spleen and peritoneum. Moreover, depletion of B cells exacerbated iNKT cell-driven liver injury, in association with a profound alteration in the hepatic cytokine milieu and enhanced neutrophil recruitment. This suppression of hepatic inflammation was IL-10 and TGFβ1 independent, and involved activity of ecto-5'-nucleotidase/CD73. IL-22 is an innate cytokine which has been broadly implicated in the regulation of hepatic immunity, and IL-22BP is a secreted specific IL-22 antagonist. In our second paper, we found that activation of hepatic iNKT cells led to the striking, parallel early recruitment of both IL-22 and IL-22BP producing immune cells. Additionally, we found a marked increase in the hepatic expression of both IL-22BP and IL-22R1 in liver biopsies obtained from patients with viral and autoimmune liver diseases compared to normal livers. We also found that the inflammasome plays an important role in regulating IL-22BP expression within liver recruited immune cells and hepatocytes. In this dissertation we have uncovered previously unrecognized regulatory mechanisms induced by activated iNKT cells within the liver. These findings give insight into pathological changes occurring in various human liver diseases in which iNKT cells have been implicated, and in which liver injury is immune-mediated. These findings could potentially be used to develop new regulatory B-cell-based and/or cytokine-based therapies to beneficially alter hepatic innate immune responses in patients suffering with immune-mediated liver diseases.
Laboratory Investigation of Polymer-flooding, ASP-flooding, and Foam-flooding in Heavy Oil System
Creators: name: Su, Shi
Publisher: name: Graduate Studies
Year: 2012
Subjects: subject: Engineering--Petroleum
subject: EOR

description: It is widely accepted that thermal methods have become the most effective techniques for Alberta heavy oil reservoirs. However, thermal techniques cannot be applied to many reservoirs, such as deep reservoir or reservoir with thin pay because heat losses will be too severe. Water flooding is an alternative but it can only achieve a very low oil recovery due to severe viscous fingering. Hence, research into other non-thermal recovery methods is necessary. This thesis presents a laboratory-scale investigation of heavy oil recovery by polymer flooding, ASP (alkali-Surfactant-Polymer) flooding and ASP-foam flooding. The production mechanisms involved in heavy oil chemical flooding and foam-flooding were studied. Several sandpacks saturated with the heavy oil were first waterflooded. Then either polymer, ASP or ASP-foam flooding was conducted. The recovery performance of these displacements was evaluated and compared. The effect of injection rates was also studied. ASP flooding at low injection rate achieved the highest oil recovery. Under the high injection rate, polymer flooding, ASP flooding and, ASP-foam flooding recovered similar amounts of oil. Oil recoveries of polymer-flooding were insensitive to injection rate. Besides, ASP foam flooding of a water saturated core (oil-free) was also conducted. A comparison between the displacements of the oil-free core with that of the previous displacement tests suggested that foam stability was destroyed in the presence of heavy oil.
Deterministic identification over channels with finite output: a dimensional perspective on superlinear rates
Creators: name: Colomer, Pau
name: Deppe, Christian
name: Boche, Holger
name: Winter, Andreas
Publisher: name: arXiv
Year: 2024
Subjects: subject: Information Theory (cs.IT)
subject: Quantum Physics (quant-ph)
subject: FOS: Computer and information sciences
subject: FOS: Physical sciences

description: Following initial work by JaJa, Ahlswede and Cai, and inspired by a recent renewed surge in interest in deterministic identification (DI) via noisy channels, we consider the problem in its generality for memoryless channels with finite output, but arbitrary input alphabets. Such a channel is essentially given by its output distributions as a subset in the probability simplex. Our main findings are that the maximum length of messages thus identifiable scales superlinearly as $R\,n\log n$ with the block length $n$, and that the optimal rate $R$ is bounded in terms of the covering (aka Minkowski, or Kolmogorov, or entropy) dimension $d$ of a certain algebraic transformation of the output set: $\frac14 d \leq R \leq \frac12 d$. Remarkably, both the lower and upper Minkowski dimensions play a role in this result. Along the way, we present a "Hypothesis Testing Lemma" showing that it is sufficient to ensure pairwise reliable distinguishability of the output distributions to construct a DI code. Although we do not know the exact capacity formula, we can conclude that the DI capacity exhibits superactivation: there exist channels whose capacities individually are zero, but whose product has positive capacity. We also generalise these results to classical-quantum channels with finite-dimensional output quantum system, in particular to quantum channels on finite-dimensional quantum systems under the constraint that the identification code can only use tensor product inputs.
description: 24 pages, 5 figures. This work has been acepted for publication in IEEE Transactions on Information Theory, and a preliminary version was presented at ISIT 2024, Athens (Greece)
Biosafety Protocol for the Control of Salmonella spp. in Commercial Layer Farms: Practical Implementation, Results, and Sanitary Impact
Creators: name: Valquerizo, Pamela Cristina
Publisher: name: Zenodo
Year: 2013
Subjects: subject: Salmonella enterica
subject: Salmonella enterica/immunology
subject: Salmonella enterica/ultrastructure
subject: Salmonella enterica/virology
subject: Salmonella enterica/chemistry
subject: Salmonella enterica/classification
subject: Salmonella enterica/cytology
subject: Salmonella enterica/enzymology
subject: Salmonella enterica/genetics
subject: Salmonella enterica/metabolism
subject: Salmonella enterica/physiology
subject: Salmonella enterica/pathogenicity
subject: Salmonella enterica/drug effects
subject: Salmonella enterica/radiation effects
subject: Salmonella enterica
subject: Layer farms
subject: Zoonoses
subject: Zoonoses/blood
subject: Zoonoses/classification
subject: Zoonoses/complications
subject: Zoonoses/diagnosis
subject: Zoonoses/immunology

description: This article describes the implementation of a poultry biosafety protocol focused on the early detection and containment of Salmonella spp. outbreaks in a commercial layer farm located in the state of Amazonas, Brazil. The facility faced monthly egg losses exceeding 7% and recurring contamination of eggs by Salmonella enterica. The implementation of structured technical measures resulted in the control of the pathogen, reduction of losses, and legal compliance, with results validated through laboratory analyses and sanitary certifications. The protocol has international applicability for poultry systems of various scales.
Two-Particle Self-Consistent Approach to Anisotropic Superconductivity
Creators: name: Otsuki, Junya
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: A nonperturbative approach to anisotropic superconductivity is developed based on the idea of two-particle self-consistent (TPSC) theory by Vilk and Tremblay. A sum-rule which the momentum-dependent pairing susceptibility satisfies is derived. An effective pairing interaction between quasiparticles is determined so that the susceptibility should fulfill this exact sum-rule, in which fluctuations belonging to different symmetries couple at finite momentum. It is demonstrated that the mode coupling between d-wave and s-wave pairing fluctuations leads to suppression of the d-wave fluctuation near the Mott insulator.
description: 7 pages, 5 figures
PARTHENOS D7.2 Report on training and education activities and updated planning
Creators: name: Spiecker, Claus
name: Oltersdorf, Jenny
name: Wuttke, Ulrike
name: Edmond, Jennifer
name: Garnett, Vicky
name: Burr, Elisabeth
name: Läpke, Stefanie
Publisher: name: Zenodo
Year: 2017
Subjects: deliverable

description: This document builds on the previous D7.1 Initial Training Plan, and provides information on its implementation, outlines updates of the plan, and lists next steps of further implementation.

All PARTHENOS deliverables are available at: http://www.parthenos-project.eu/resources/projects-deliverables
New derivation of soliton solutions to the AKNS$_2$ system via dressing transformation methods
Creators: name: Assunção, A. de O.
name: Blas, H.
name: da Silva, M. J. B. F.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: Mathematical Physics (math-ph)
subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: We consider certain boundary conditions supporting soliton solutions in the generalized non-linear Schrödinger equation (AKNS$_r$)\,($r=1,2$). Using the dressing transformation (DT) method and the related tau functions we study the AKNS$_{r}$ system for the vanishing, (constant) non-vanishing and the mixed boundary conditions, and their associated bright, dark, and bright-dark N-soliton solutions, respectively. Moreover, we introduce a modified DT related to the dressing group in order to consider the free field boundary condition and derive generalized N-dark-dark solitons. As a reduced submodel of the AKNS$_r$ system we study the properties of the focusing, defocusing and mixed focusing-defocusing versions of the so-called coupled non-linear Schrödinger equation ($r-$CNLS), which has recently been considered in many physical applications. We have shown that two$-$dark$-$dark$-$soliton bound states exist in the AKNS$_2$ system, and three$-$ and higher$-$dark$-$dark$-$soliton bound states can not exist. The AKNS$_r$\,($r\geq 3$) extension is briefly discussed in this approach. The properties and calculations of some matrix elements using level one vertex operators are outlined.
description: 34 pages, 3 figures. Extended version of arXiv:1110.3108[nlin.SI], to appear in J. Phys. A: Math. Theor
Nachhaltigkeitskonzept der Max Weber Stiftung
Creators: name: Max Weber Stiftung - Deutsche Geisteswissenschaftliche Institute im Ausland
Publisher: name: Zenodo
Year: 2023
Subjects: Policy
Max Weber Stiftung
Nachhaltigkeit

description: Das vorliegende Papier zielt darauf ab, Prozesse anzustoßen, welche die Nachhaltigkeit des für die Max Weber Stiftung (MWS) typischen transnationalen wissenschaftlichen Arbeitens und nicht zuletzt auch die Klimabilanz der MWS auf allen Ebenen verbessern. Es orientiert sich an der MWS-Strategie 2030 und schlägt stiftungsweite übergeordnete Maßnahmen und Leitlinien vor, an denen sich die MWS orientiert.
Relations between multizeta values in characteristic p
Creators: name: Rodríguez, José Alejandro Lara
Publisher: name: arXiv
Year: 2011
Subjects: subject: Number Theory (math.NT)
subject: FOS: Mathematics
subject: 11M38, 11M32

description: We study relations between the multizeta values for function fields introduced by D. Thakur. The product ζ(a)ζ(b) is a linear combination of multizeta values. For q=2, a full conjectural description of how the product of two zeta values can be described as the sum of multizetas was given by Thakur. The recursion part of this recipe was generalized by the author. In this paper, the main conjecture formulated by the author, as well as some conjectures of Thakur are proved. Moreover, for general q, we prove closed formulas as well as a recursive recipe to express ζ(a)ζ(b) as a sum of multizeta values.
description: 19 pages
The generalized Gibbs ensemble as a pseudo-initial state: its predictive power revealed in a second quench
Creators: name: Zhang, J. M.
name: Cui, F. C.
name: Hu, Jiangping
Publisher: name: arXiv
Year: 2011
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The generalized Gibbs ensemble has been shown to be relevant in the relaxation of a completely integrable system subject to a quantum quench, in the sense that it accurately predicts the steady values of some physical variables. We proceed to further question its relevance by giving the quenched system a second quench. The concern is whether the generalized Gibbs ensemble can also accurately predict the relaxed system's response to the second quench. Two case studies with the transverse Ising model and the hard-core bosons in one dimension yield an affirmative answer. The relevance of the generalized Gibbs ensemble in the non-equilibrium dynamics of integrable systems is then greatly strengthened.
description: 5 pages, 2 figures
Anagyrus Howard 1896
Creators: name: Triapitsyn, Serguei V.
name: Logarzo, Guillermo A.
name: Aguirre, María B.
name: Aquino, Daniel A.
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Encyrtidae
Anagyrus

description: Anagyrus Howard, 1896
 Anagyrus Howard in Howard & Ashmead 1896: 638. Type species: Anagyrus greeni Howard, by monotypy. Subsequent important references: De Santis 1964: 56 –59 (diagnosis, distribution, host associations, partial key to species in Argentina); Noyes 1980: 173 (synonymy, list of species in the Neotropical region, brief discussion); Noyes & Hayat 1994: 69 –74 (synonymy, comments, biology); Noyes 2000: 28 –32 (synonymy, list of species in the Neotropical region, brief discussion).
 Comments. Species of Anagyrus in Argentina and the entire Neotropical region can be recognized using the key in Noyes (1980). Later, Noyes (2000) provided a useful key to females of the genera in the subfamily Tetracneminae occurring in Costa Rica and a key to Costa Rican species of Anagyrus. The key below includes 14 species of Anagyrus known so far from Argentina and also, for convenience only, A. porteri (Brèthes) from Chile. The previous such key by De Santis (1964) included only six species; De Santis (1964, 1972) also had described several species in other genera which were later justifiably synonymized under Anagyrus by Noyes (1979, 1980, 2000).
 All known species of Anagyrus in Argentina seem to be native with the exception of A. pseudococci (Girault) s. str., which was likely unintentionally introduced with grape seedlings from Italy (Triapitsyn et al. 2007).
description: Published as part of Triapitsyn, Serguei V., Logarzo, Guillermo A., Aguirre, María B. & Aquino, Daniel A., 2014, Two new species of Anagyrus (Hymenoptera: Encyrtidae) from Argentina, parasitoids of Hypogeococcus spp. (Hemiptera: Pseudococcidae), with taxonomic notes on some congeneric taxa, pp. 201-230 in Zootaxa 3861 (3) on page 202, DOI: 10.11646/zootaxa.3861.3.1, http://zenodo.org/record/250604