cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A collimated, ionized bipolar structure and a high density torus in the young planetary nebula IRAS 17347-3139
Creators: name: Tafoya, D.
name: Gomez, Y.
name: Patel, N. A.
name: Torrelles, J. M.
name: Gomez, J. F.
name: Anglada, G.
name: Miranda, L. F.
name: de Gregorio-Monsalvo, I.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present observations of continuum (lambda = 0.7, 1.3, 3.6 and 18 cm) and OH maser (lambda = 18 cm) emission toward the young planetary nebula IRAS 17347-3139, which is one of the three planetary nebulae that are known to harbor water maser emission. From the continuum observations we show that the ionized shell of IRAS 17347-3139 consists of two main structures: one extended (size ~1". 5) with bipolar morphology along PA=-30 degrees, elongated in the same direction as the lobes observed in the near-infrared images, and a central compact structure (size ~0". 25) elongated in the direction perpendicular to the bipolar axis, coinciding with the equatorial dark lane observed in the near-infrared images. Our image at 1.3 cm suggests the presence of dense walls in the ionized bipolar lobes. We estimate for the central compact structure a value of the electron density at least ~5 times higher than in the lobes. A high resolution image of this structure at 0.7 cm shows two peaks separated by about 0". 13 (corresponding to 100-780 AU, using a distance range of 0.8-6 kpc). This emission is interpreted as originating in an ionized equatorial torus-like structure, from whose edges the water maser emission might be arising. We have detected weak OH 1612 MHz maser emission at VLSR ~ -70 km/s associated with IRAS 17347-3139. We derive a 3 sigma upper limit of < 35% for the percentage of circularly polarized emission. Within our primary beam, we detected additional OH 1612 MHz maser emission in the LSR velocity ranges -5 to -24 and -90 to -123 km/s, associated with the sources 2MASS J17380406-3138387 and OH 356.65-0.15, respectively.
description: 26 pages, 8 figures. Accepted for publication in ApJ
Smart Mobility in Smart Cities
Creators: Sara Paiva
Christos Zaroliagis  & Sergio Savaresi
Publisher: name: IEEE
Year: 2020

Slides for Webinar: Smart Mobility in Smart Cities
The transition to electric vehicles is essential to decarbonize the transportation sector which is currently a huge source of carbon emissions. This highly disruptive transition is picking up speed, and, in this session, we will review the market forces in play that are driving the transition to electric vehicles. The discussion will include technical, economic, political and regulatory issues that impact the speed of this transition to electric vehicles. It will also include how the electric grid that will power new electric vehicles will need to change and how electric vehicles will drive new smart homes and smart grid innovations.
Mesons and Baryons: Parity Partners
Creators: name: Gutiérrez-Guerrero, L. X.
name: Paredes-Torres, G.
name: Bashir, A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We calculate masses of light and heavy mesons as well as baryons of negative parity containing $u,d,s,c$ and $b$ quarks. It is an extension of our previous work where we had studied the positive parity baryons. We adopt a quark-diquark picture of baryons where the diquarks are non-pointlike with a finite spatial extension. The mathematical foundation for this analysis is implemented through a symmetry-preserving Schwinger-Dyson equations treatment of a vector-vector contact interaction, which preserves key features of quantum chromodynamics, such as confinement, chiral symmetry breaking, axial vector Ward-Takahashi identity and low-energy Goldberger-Treiman relations. This treatment simultaneously describes mesons and provides attractive correlations for diquarks in the $\overline{3}$ representation. Employing this model, we compute the spectrum and masses of all spin-1/2 and spin-3/2 baryons of negative parity, supplementing our earlier evaluation of positive parity baryons, containing 1, 2 or 3 heavy quarks. In the process, we calculate masses of a multitude of mesons and corresponding diquarks. Wherever possible, we make comparisons of our results with known experimental observations as well as theoretical predictions of several models and approaches including lattice quantum chromodynamics, finding satisfactory agreement. We also make predictions for heavier states not yet observed in the experiment.
description: 10 pages, 4 figures
ВОЯГА ЕТМАГАНЛАР ЎРТАСИДА НАЗОРАТСИЗЛИК ВА ҲУҚУҚБУЗАРЛИКЛАР ПРОФИЛАКТИКАСИНИ ТАШКИЛ ЭТИШНИНГ АҲАМИЯТИ
Creators: name: Нарзиев, Озодбек
name: Ниматов, Шерзод
Publisher: name: Zenodo
Year: 2025

description: Мақолада, вояга етмаганлар жиноятчилигининг турлари ва унинг ўзига хос жиҳатлари, шунингдек ушбу жиноятларга қарши курашиш бўйича қонунчилик нормаларини такомиллаштириш ҳамда самарадорлигини ошириш юзасидан таклиф ва тавсиялар берилган.
The Vancouver Island wolf (Canis lupus crassodon) : an initial study of food habits and social organization
Creators: name: Scott, Barbara Mary Victoria
Publisher: name: University of British Columbia
Year: 2012

description: The food habits and social organization of Vancouver Island wolves (Canis lupus crassodon Hall) inhabiting an area on Northeastern Vancouver Island were studied from January, 1977 through January, 1979. During this period, two adjacent packs were studied in detail between March and November, 1978. Three members of the Upper Adam pack, an adult male, adult female and yearling female, were captured, fitted with radio-transmitters and subsequently radio-tracked for five months (April to August, 1978). The same procedures were carried out on the adult male and female of the Lower Adam pack, who were radio-tracked for eight and five months respectively (April to November; April to August). A lone male was captured and tracked for eight months (November, 1978 to June, 1979). Black-tailed deer (Odocoileus hemionus columbianus) were the major prey in the diet of both packs, while Roosevelt elk (Cervus elaphus roosevelti) and beaver (Castor canadensis leucodontus) were utilized as secondary food sources. Seasonal variation in the diet of the wolves was apparent, with deer fawns and elk calves constituting the bulk of the summer (June 1 to August 31) diet. Beaver were taken primarily during the winter months. Individual packs showed different foraging patterns. The lower pack depended less upon adult elk during the winter and more upon ungulate young during the summer, while the Upper pack utilized relatively more adult elk during the winter with more emphasis on adult deer as opposed to ungulate young during the summer. The Upper pack consisted of ten individuals, two adult males, one adult female, one yearling femaling, two unknown, and four pups. The radio-collared members inhabited a 64 km2 home range. Wolf density within their home range was one per 6.4 km2. The Lower pack consisted of five individuals including one adult male, one adult female, and three pups which ranged throughout a 75 km2 area. Density within this area was one wolf per 15 km2. Den sites were situated within pristine coniferous timber where hollow logs, tree bases and root systems were utilized for denning purposes. Both packs occupied densites from late April until mid-July. During the post-denning period rendezvous sites were frequented, situated in open meadows bordering on timber stands or river side areas. Both types of sites were generally typified by a water source nearby, structural suitability giving a view of the surrounding area, activity and resting areas, and several well used trails. Seasonal shifts in the use of core areas of home ranges were apparent for both packs, and den and rendezous sites were spatio-temporally distributed at significant distances from adjacent pack sites.
Quantum Ratchet Accelerator without a Bichromatic Lattice Potential
Creators: name: Wang, Jiao
name: Gong, Jiangbin
Publisher: name: arXiv
Year: 2008
Subjects: subject: Quantum Physics (quant-ph)
subject: Other Condensed Matter (cond-mat.other)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: In a quantum ratchet accelerator system, a linearly increasing directed current can be dynamically generated without using a biased field. Generic quantum ratchet acceleration with full classical chaos [Gong and Brumer, Phys. Rev. Lett. 97, 240602 (2006)] constitutes a new element of quantum chaos and an interesting violation of a sum rule of classical ratchet transport. Here we propose a simple quantum ratchet accelerator model that can also generate linearly increasing quantum current with full classical chaos. This new model does not require a bichromatic lattice potential. It is based on a variant of an on-resonance kicked-rotor system, periodically kicked by two optical lattice potentials of the same lattice constant, but with unequal amplitudes and a fixed phase shift between them. The dependence of the ratchet current acceleration rate on the system parameters is studied in detail. The cold-atom version of our new quantum ratchet accelerator model should be realizable by introducing slight modifications to current cold-atom experiments.
description: 9 pages, 6 figures, submitted to Phys. Rev. E
Ensemble reduced density matrix functional theory for excited states and hierarchical generalization of Pauli's exclusion principle
Creators: name: Schilling, Christian
name: Pittalis, Stefano
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We propose and work out a reduced density matrix functional theory (RDMFT) for calculating energies of eigenstates of interacting many-electron systems beyond the ground state. Various obstacles which historically have doomed such an approach to be unfeasible are overcome. First, we resort to a generalization of the Ritz variational principle to ensemble states with fixed weights. This in combination with the constrained search formalism allows us to establish a universal functional of the one-particle reduced density matrix. Second, we employ tools from convex analysis to circumvent the too involved N-representability constraints. Remarkably, this identifies Valone's pioneering work on RDMFT as a special case of convex relaxation and reveals that crucial information about the excitation structure is contained in the functional's domain. Third, to determine the crucial latter object, a methodology is developed which eventually leads to a generalized exclusion principle. The corresponding linear constraints are calculated for systems of arbitrary size.
description: to appear in Phys. Rev. Lett
Studien zur Untersuchung von bestrahlten Mäusen und Wachstum bestrahlter Bakterien
Creators: name: Capka, Harald
Year: 2017

description: Strahlentherapie ist ein wichtiger Bestandteil vieler medizinischer Anwendungen und basiert auf dem Einsatz von ionisierender Strahlung; es kommen dabei hauptsächlich Gammastrahlen, Röntgenstrahlen oder Elektronenstrahlen zum Einsatz. Die Exposition gegenüber ionisierender Strahlung kann zu einem Mineralstoffverlust, erhöhter Osteoklastenaktivität und damit verbunden zu strukturellen Defiziten im Knochengewebe führen [Alwood, et al. 2015]. Das Ziel dieser Arbeit ist es zu untersuchen, ob es durch Strahlung hervorgerufene Veränderungen in der Expression der Gene TNF-α, IL-1B und OPG im Knochengewebe von erwachsenen Mäusen gibt. Erwachsene Mäuse wurden gegenüber 1.5 Gy hoch-energetischer Strahlung exponiert und das Knochengewebe sowohl von den bestrahlten (n=13), als auch nicht bestrahlten Mäusen (n=9), entnommen und tiefgefroren gelagert. Die Proben wurden mit RNSase-freien Werkzeugen zerkleinert und anschließend mit flüssigem Stickstoff bei -196°C schockgefrostet. Zur RNS-Extraktion wurden die Gewebsproben homogenisiert und die RNS mit TRIzol, Cholorform und Isopropanol, gemäß Herstellerprotokoll, extrahiert. Die RNS-Qualität und Quantität wurde mithilfe eines Photometers bei 230, 260 und 280nm überprüft. Durch Zugabe des Enzyms Reverse Transkriptase wurde cDNS (komplementäre DNS) synthetisiert, eine Standard-PCR durchgeführt und zur Sichtbarmachung und Auswertung der Ergebnisse eine Gelelektrophorese mit Agarosegel durchgeführt. Anschließend wurde eine quantitative Echtzeit-PCR angewendet um im Knochengewebe der bestrahlten Mäuse Unterschiede in der Genexpression zwischen den einzelnen Gruppen analysieren zu können. Ein weiterer Bestandteil dieser Arbeit ist die Untersuchung der Strahlenempfindlichkeit von E-Coli-Bakterien bei unterschiedlichen Redox-Bedingungen. Dazu wurden der Einfluss von Sauerstoff und die Zugabe von Aminosäuren (L-Tryptophan und L-Serin) auf die Überlebensrate der Bakterien untersucht. Diese wurden mit Gammastrahlen bei Dosen im Bereich von 0-640 Gy bestrahlt und aus den erhaltenen Ergebnissen Überlebenskurven erstellt.
Energy Quality: A Definition
Creators: Xiao-Ping Zhang and Zuanhong Yan
Publisher: name: IEEE
Year: 2020

There are needs to introduce a technical framework, namely, 'energy quality' to (a) define the quality of power waveforms; (b) propose measures/indices to characterize the variations (fluctuations and intermittences) of powers and power flows; (c) present methods to improve energy quality.
In literature, variations and distortions, and interruptions of voltages (or voltage waveforms) and currents (or current waveforms) have been considered in the framework of power quality (or voltage quality). With the massive penetration of renewable energy into power systems, variations including fluctuations and intermittences of output powers of these renewable sources are of great concerns. It is evidenced that with the high penetration of renewable energy, variations of renewable energy have increased the costs of UK's balancing markets by 39% in this spring and summer (NGESO, 2020). Therefore, there are needs to introduce a technical framework, namely, 'energy quality' to (a) define the quality of power waveforms; (b) propose measures/indices to characterize the variations (fluctuations and intermittences) of powers and power flows; (c) present methods to improve energy quality. Finally, research directions of energy quality are highlighted to encourage more R&D as well as international collaborations in terms of standards and grid code developments.
Developing games for scientific training: a workshop for the creation of alternative learning experiences
Creators: name: Anna, Swan
Publisher: name: Zenodo
Year: 2025
Subjects: Training
Game development

description: Providing alternative learning experiences can be an effective way to keep learners engaged and games specifically designed for learning have been used across a range of topics. Games can be used in scientific training, and this is becoming increasingly relevant as much scientific training and related practical components move to screens rather than the lab. In this case, games can be used to provide interactive, group-based, learning experiences that can keep learners engaged and motivated. However, most scientific trainers do not have experience or knowledge of game development and so would not be able to create effective learning games for their trainees. Here, a workshop is described which introduces participants to game mechanisms suitable for scientific training games and game design elements used in effective game development, whilst keeping a focus on their required learning objectives and target audience.
Ontology-based n-ball Concept Embeddings Informing Few-shot Image Classification
Creators: name: Jayathilaka, Mirantha
name: Mu, Tingting
name: Sattler, Uli
Publisher: name: arXiv
Year: 2021
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: We propose a novel framework named ViOCE that integrates ontology-based background knowledge in the form of $n$-ball concept embeddings into a neural network based vision architecture. The approach consists of two components - converting symbolic knowledge of an ontology into continuous space by learning n-ball embeddings that capture properties of subsumption and disjointness, and guiding the training and inference of a vision model using the learnt embeddings. We evaluate ViOCE using the task of few-shot image classification, where it demonstrates superior performance on two standard benchmarks.
Thermal Right-Handed Sneutrino Dark Matter
Creators: name: Deppisch, Frank
name: Pilaftsis, Apostolos
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We discuss the relic abundance of the right-handed sneutrinos in the supersymmetric F_D-term model of hybrid inflation. As well as providing a natural solution to the mu- and gravitino overabundance problems, the model offers the lightest right-handed sneutrino as a candidate for thermal dark matter. The F_D-term model predicts a new quartic coupling of purely right-handed sneutrinos to the Higgs doublets that thermalizes the sneutrinos and makes them annihilate sufficiently fast to a level compatible with the current cosmic microwave background data. We discuss this scenario and identify favourable regions of the parameter space within mSUGRA.
description: Submitted for the SUSY08 proceedings, 3 pages, LaTeX, 2 eps figures
The Evolution of Research in Microgrids Control
Creators: Athanasios Vasilakis
Igyso Zafeiratou
Dimitris T. Lagos
and Nikos D. Hatziargyriou
Publisher: name: IEEE
Year: 2020

This paper sketches the research evolution in microgrids from their first formulation until nowadays.
Microgrids (MGs), as novel paradigms of active Distribution Networks, have been gaining increasing interest by the research community in the last 20 years. Currently, they are considered as key components in power system decentralization, providing viable solutions for rural electrification, enhancing resilience and supporting local energy communities. Their main characteristic is the coordinated control of the interconnected distributed energy resources (DER), which can be realized by various methods, ranging from decentralized communication-free approaches to centralized ones, where decisions are taken at a central point. This paper provides an overview of this development focusing on the technical control solutions proposed by reseachers for the various levels of MG organization hierarchy. A critical assessment of selected, popular technologies is provided and open research questions regarding the trend to more decentralized power systems are discussed.
An Improved Scheduling Algorithm for Traveling Tournament Problem with Maximum Trip Length Two
Creators: name: Chatterjee, Diptendu
name: Roy, Bimal Kumar
Publisher: name: arXiv
Year: 2021
Subjects: subject: Data Structures and Algorithms (cs.DS)
subject: Discrete Mathematics (cs.DM)
subject: FOS: Computer and information sciences
subject: 05C85, 68R10

description: The Traveling Tournament Problem(TTP) is a combinatorial optimization problem where we have to give a scheduling algorithm which minimizes the total distance traveled by all the participating teams of a double round-robin tournament maintaining given constraints. Most of the instances of this problem with more than ten teams are still unsolved. By definition of the problem the number of teams participating has to be even. There are different variants of this problem depending on the constraints. In this problem, we consider the case where number of teams is a multiple of four and a team can not play more than two consecutive home or away matches. Our scheduling algorithm gives better result than the existing best result for number of teams less or equal to 32.
description: Accepted and presented in ATMOS, 2021 on 9th Sptember 2021 and will appear in OASIcs, Volume 96, ATMOS 2021 by Dagstuhl Publishing
Complementarity, not Optimization, is the Language of Markets
Creators: Antonio J. Conejo and Carlos Ruiz
Publisher: name: IEEE
Year: 2020

In this paper and in the context of power markets, we review complementarity using a tutorial approach.
Each market agent (producer or consumer) in a power market pursues its own objective, typically to maximize its own profit. As such, the specific behavior of each agent in the market is conveniently formulated as a bi-level optimization problem whose upper-level problem represents the profit seeking behavior of the agent and whose lower-level problem represents the clearing of the market. The objective function and the constraints of this bi-level problem depend on the agent's own decision variables and on those of other agents as well. Understanding the outcomes of the market requires considering and solving jointly the interrelated bi-level problems of all market agents, which is beyond the purview of optimization. Solving jointly a set of bi-level (or single-level) optimization problems that are interrelated is the purview of complementarity. In this paper and in the context of power markets, we review complementarity using a tutorial approach.
Cabin Crew Food Safety Training: An Exploratory Study
Creators: name: Abdelhakim, Ayman Safi Farag
Publisher: name: Cardiff Metropolitan University
Year: 2022
Subjects: Food and hospitality services

description: The production and service of airlines meals is a “high-risk mass catering operation” with food safety implications, including temperature control during receiving/loading, storing and regeneration of meals, personal hygiene, cross-contamination, food allergy and poisoning. Food service is a crucial part of cabin crew on-board duties, therefore and according to the regulations, cabin crew should be educated/trained on food safety and hygiene. However, while a plethora of studies have been conducted on food handlers' food safety training in different sectors of the catering industry, to date; there is no in-depth study on cabin crew food safety training. Thus this study aimed to investigate cabin crew food safety training through the development of a conceptual framework to inform the study. Based on a mixed methods design and pragmatic worldview, this study employed a partially mixed methods sequential exploratory equal status typology. It involved two separate, but integrated strands. The first strand was qualitative based on a snowballing technique,in whicha sample of 26 cabin crew training managers/supervisors participated in in-depth, semi-structured interviews from 20 airlines worldwide. In addition, content analysis of documents, e.g., airlines' websites was conducted. The qualitative findings revealed that majority of airlines train cabin crew on food safety. However, training was not based on training needs analysis (TNA) and was not aligned with cabin crew roles and duties. Additionally, few airlines evaluated independently the reaction, knowledge, behaviours and results of their cabin crew food safetytraining. These findings informed the need for quantifying and generalisingof cabin crew food safety issues, therefore an intermediate model was developed.The second strand was quantitative based on a random purposivesample of 307 cabin crew from the 20 airlines participated in the first strand. Structural equation modelling (SEM) was used for measuring the relationships betweensix constructs of the intermediate model; (training, knowledge, attitudes, self-reported practices, barriers and training needs). The SEM findings revealed that food safety training affectspositively and significantly the knowledge, attitudes and self-reported practices. Food training affectsnegatively and significantly the perceived training needs. However, there were significant differences between trained and untrained cabin crew. The findings also exposed the influence of barriers to food safety training and behaviours of both models; trained and untrained. This is the first study on cabin crew food safety training. It contributed to knowledge by providing two revised models which improveunderstanding of cabin crew food safety training which could inform the development of future cabin crew food safety training. Finally, this study developed a range of recommendations, limitations and future research opportunities.
On-line Optimal Ranging Sensor Deployment for Robotic Exploration
Creators: name: Santoro, Luca
name: Brunelli, Davide
name: Fontanelli, Daniele
Publisher: name: arXiv
Year: 2021
Subjects: subject: Robotics (cs.RO)
subject: Multiagent Systems (cs.MA)
subject: FOS: Computer and information sciences
subject: J.7

description: Navigation in an unknown environment without any preexisting positioning infrastructure has always been hard for mobile robots. This paper presents a self-deployable ultra wideband UWB infrastructure by mobile agents, that permits a dynamic placement and runtime extension of UWB anchors infrastructure while the robot explores the new environment. We provide a detailed analysis of the uncertainty of the positioning system while the UWB infrastructure grows. Moreover, we developed a genetic algorithm that minimizes the deployment of new anchors, saving energy and resources on the mobile robot and maximizing the time of the mission. Although the presented approach is general for any class of mobile system, we run simulations and experiments with indoor drones. Results demonstrate that maximum positioning uncertainty is always controlled under the user's threshold, using the Geometric Dilution of Precision (GDoP).
description: 10 pages, 12 figures, 3 tables, in IEEE Sensors Journal
Trauma, Erinnerung und Identität im österreichischen Familienroman
Creators: name: Glitzner, Carina
Year: 2017

description: Das derzeit überaus populäre Genre des Familien- bzw. Generationenromans zeichnet sich in der heutigen deutschsprachigen Literatur durch die Konzentration auf die Themen Trauma, Erinnerung und Identität aus. Aufgrund dessen fokussiert die vorliegende Masterarbeit die genannten Aspekte in der Analyse zweier österreichischer Familienromane, Melitta Brezniks „Der Sommer hat lange auf sich warten lassen“ (2013) und Anna Mitgutschs „Die Annäherung“ (2016). Ziel ist es, im Rahmen der Untersuchung der beiden Texte die Konsequenzen der zu keinem Zeitpunkt bewältigten, verschwiegenen, transgenerational transmittierten Kriegstraumata der Elterngeneration, der Zeitzeugen des Zweiten Weltkriegs, für die betroffenen Individuen und deren Vita herauszuarbeiten sowie die vielfältigen Funktionen des individuellen, autobiographischen Erinnerns, insbesondere im Zusammenhang mit Identitätsstiftung, aufzuzeigen. Angestrebt wird dabei eine möglichst textnahe Interpretation der genannten Romane. Um das gewünschte Resultat zu erzielen, wird versucht, im ersten Abschnitt der Masterarbeit mit Bezugnahme auf den neuesten Forschungsstand entsprechendes psychologisches, historisches, literatur- und kulturwissenschaftliches Hintergrundwissen zu liefern, das im anschließenden analytischen Teil Anwendung finden soll. Die vorliegenden Ergebnisse illustrieren die tiefgreifenden, verheerenden Auswirkungen der unverarbeiteten seelischen Schockerlebnisse sowohl auf den Lebensweg der Traumaopfer als auch der nachgeborenen Generationen insbesondere im Kontext familiärer Relationen und veranschaulichen im Zusammenhang mit den dyadischen Beziehungskonstellationen von Mutter und Tochter respektive Vater und Tochter, wie durch den Akt des autobiographischen Reflektierens über die eigene (Familien-)Geschichte eine emotionale Annäherung ermöglicht bzw. im Zusammenhang mit den narrativen Selbstthematisierungen der einzelnen Figuren Identität gestiftet wird.
Two-photon resonance fluorescence of two interacting non-identical quantum emitters
Creators: name: Vivas-Viaña, Alejandro
name: Muñoz, Carlos Sánchez
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We study a system of two interacting, non-indentical quantum emitters driven by a coherent field. We focus on the particular condition of two-photon resonance and obtain analytical expressions for the stationary density matrix of the system and observables of the fluorescent emission. Importantly, our expressions are valid for the general situation of non-identical emitters with different transition energies. Our results allow us to determine the regime of parameters in which coherent two-photon excitation, enabled by the coherent coupling between emitters, is dominant over competing, first-order processes. Using the formalism of quantum parameter estimation, we show that the features imprinted by the two-photon dynamics into the spectrum of resonance fluorescence are particularly sensitive to changes in the distance between emitters, making two-photon excitation the optimal driving regime for the estimation of inter-emitter distance. This can be exploited for applications such as superresolution imaging of point-like sources.
CORRELATION OF ADIPOSITY WITH SERUM PARATHYROID AND HYPOVITAMINOSIS D AMONG FEMALE POPULATION OF LAHORE
Creators: name: LAIBA SHEHZADI
name: Dr. SADIA ZULFIQAR
name: AFSHAN SAEED
name: SYEDA FATIMA HAIDER
name: ANUM SAEED
name: ANEELA ANJUM
Publisher: name: Zenodo
Year: 2025
Subjects: Immunoradiometric Assay (IRMA), Obesity, 25(OH)D, Parathyroid Hormone, Radioimmunoassay (RIA).

description: Abstract

The purpose of study was to find the effect of hypovitaminosis D on concentration of parathyroid hormone (PTH) & its correlation with anthropometric measures in obese women residing in Lahore, Punjab Pakistan. A total of 128 women aging 20-50 years were selected from the outdoor patient’s department, Mayo Hospital Lahore. Non-obese women (n=25) were selected as control. This was a cross- sectional study and sampling was done according to random sampling technique. A written and informed consent of participation was taken from each woman before selecting as sample. Collection of blood sample was done to examine 25(OH)D and PTH by radioimmunoassay (RIA) and immunoradiometric assay (IRMA). Mean, standard deviation, student t-test and Pearson’s correlation coefficient were used for data analysis at 95% confidence interval and p-value <0.05. The average age of the sample and control group was 33.19±7.9 and 32.16±6.52 years, respectively. The mean 25(OH)D concentration in sample (14.91±6.16 ng/mL) verses control was (17.05±10.72; p<0.05). Serum PTH levels (26.12±17.94 vs.20.57±6.92 pg/mL) was approximately 5% higher in obese group as compared to control. Hypoparathyroidism was observed in 12.5% (sample) and 4% (control) population respectively. PTH shows negative correlation with weight (r=0.00011), height (r=-0.106), waist circumference (r=-0.147) and positive with BMI (r=0.05) and age (r=0.16). Vitamin D shows negative relation with BMI (r=-0.02), PTH (r=-0.015) and age (r=-0.14) and positive with weight (r=0.24), height (r=0.12), waist circumference (r=0.10) and hip circumstances (r=0.12).  This data indicates frequent vitamin D inadequacy which is significantly altering the PTH level in female population.
Year in Review
Creators: Satish Saini
Mangaya Sivagnanam
Peter Wung
Panos Moutis
Mehrdad Rostami
Panos Moutis
Publisher: name: IEEE
Year: 2020

Newsletter
Issue on Smart Grid - Year in Review featuring "Technical Activities Year in Review", "R&D Year in Review", "SG Year in Review", "Pubs Year in Review"
Renormalized Polyakov loops in various representations in finite temperature SU(2) gauge theory
Creators: name: Huebner, Kay
name: Pica, Claudio
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We present results for the renormalized Polyakov loop in the three lowest irreducible representations of SU(2) gauge theory at finite temperature. We will discuss their scaling behavior near $T_c$ and test Casimir scaling in the deconfined phase. Moreover, we will compare these results to calculations for the renormalized Polyakov loops in several representations in the SU(3) gauge theory.
description: 7 pages, 4 figures, 2 tables, talk presented at the XXVI International Symposium on Lattice Field Theory, 14-19 July 2008, Williamsburg, VA, USA
Genetic structure and common ancestry expose the dingo-dog hybrid myth
Creators: name: Ahrens, Collin
name: WEEKS, ANDREW
Publisher: name: figshare
Year: 2024
Subjects: classificationCode: 310405
subject: Evolutionary ecology

description: The evolutionary history of canids has been shown to be complex, with hybridisation and domestication confounding our understanding of speciation among various canid lineages. The dingo is a recent canid lineage that was completely isolated from other canids for over 5,000 years on the Australian mainland, but the introduction of domestic dogs in 1788 has placed doubt on its independence with recent studies highlighting hybridisation between dingoes and domestic dogs. Using genomic single nucleotide polymorphism data from 434 Australian canid samples, we explicitly test for introgression between closely related canid groups and dingoes. We found no evidence of introgression between dingoes and domestic dogs, and show that previous work has likely mischaracterised shared ancestral genetic variation as evidence for hybridisation. Further, New Guinea Singing Dogs are the only canid group that significantly shared genetic variation with dingoes, which fits with our understanding of previous phylogenetic analyses. Despite more recent sympatric distributions with dogs, dingoes have likely maintained their independence since their arrival in Australia, even in areas with high lethal control, indicating that their evolutionary trajectory is currently being conserved. The future conservation of the dingo lineage will require policies that promote coexistence pathways between humans and dingoes that protect rangeland systems and the dingoes’ evolutionary future.
Slides for: Singapore: Evolving a Smart Nation
Creators: Bob Gill
Publisher: name: IEEE
Year: 2021

Slides for Webinar Presented by: Bob Gill
Singapore’s Smart Nation initiative envisions a world-class city with a government that gives citizens the best home possible and responds to their different and changing needs, and a high performing economy powered by digital innovation. Key pillars that support Smart Nation are: Digital Economy, Digital Government and Digital Society. With the city-state recently judged to be the “smartest city in the world” (IMD Smart City Index, 2020), this webinar from ARC Advisory Group delves into Singapore’s Smart Nation strategies, goals and successes. It also details how building on the Smart Nation foundation, Singapore crafted a wide-ranging technological response to the COVID-19 pandemic, including robot dogs patrolling city parks to check safe distancing, wearable devices for rapid contact tracing, and a multitude of new government e-services.
The current status of local government borrowing: A case study of Uttaradit Province
Creators: name: Phichitchai Kingphuang
name: Achakorn Wongpreedee
Publisher: name: School of Public Administration, National Instituteof Development Administration (NIDA)
Year: 2013
Subjects: Debt, Local Government, Local government borrowing

description: 2, 11, Thai Journal of Public Administration
Signal propagation in time-dependent spin transport
Creators: name: Zhu, Yao-Hui
name: Hillebrands, Burkard
name: Schneider, Hans Christian
Publisher: name: arXiv
Year: 2008
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: This paper analyzes theoretically the signal propagation in spin transport by modulating the current passing through magnetic multilayers. Using a macroscopic description of spin transport based on the dynamical Boltzmann equation, we show that time-dependent spin transport possesses a wave-like character that leads to modifications of pure spin-diffusion dynamics. In particular, the wave-like characteristics allow one to extract a finite spin signal-propagation velocity.
description: 10 pages, 10 figures, corrected typos (including numerical values)
Three dimensional filamentary structures of a relativistic electron beam in Fast Ignition plasmas
Creators: name: Karmakar, Anupam
name: Kumar, Naveen
name: Polomarov, Oleg
name: Shvets, Gennady
name: Pukhov, Alexander
Publisher: name: arXiv
Year: 2008
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: The filamentary structures and associated electromagnetic fields of a relativistic electron beam have been studied by three dimensional particle-in-cell (PIC) simulations in the context of Fast Ignition fusion. The simulations explicitly include collisions in return plasma current and distinctly examine the effects of beam temperature and collisions on the growth of filamentary structures generated.
description: 4 pages, 6 figures, submitted to Physics of Plasmas
How cost impacts equitable participation in astronomy outreach events
Creators: name: Archipley, Melanie
name: Dalgleish, Hannah S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Physics Education (physics.ed-ph)
subject: FOS: Physical sciences

description: The International Astronomical Youth Camp (IAYC) is an astronomy education outreach event with more than 50 years of history and over 1,700 unique participants from 81 nationalities. The International Workshop for Astronomy e.V. (IWA) is the non-profit organization behind the IAYC, established in 1979 and based in Germany. The IAYC's unprecedented longevity in a rapidly globalizing world has meant that financial inequities decreases the reach of the camp to people from the Global South compared to Global North countries. Though nationalities represented per camp has increased steadily since its inception, the share of participants from eastern Europe and Africa has dropped, while those from western Europe and North America have increased. This note examines how camp cost, location, and leadership affects nationality diversity amongst participants, and how astronomy outreach events must reckon with funding for less privileged participants with limited access to resources.
description: 4 pages, 1 figure, included as conference proceedings in Focus on AAS 237
Eine EEG-Studie zur Überprüfung von Aufmerksamkeitsverlagerungen durch nicht-bewusst wahrnehmbare Hinweiswörter
Creators: name: La Notte, Valeria Natalia
Year: 2017

description: Behavioural and electrophysiological data were collected to examine attentional shifts triggered by subliminal (not consciously perceivable) word cues. Before target presentation (a bar in a predefined color) a non-predictive subliminal word cue indicating the side on which the target was likely to appear, was presented. Thereby, creating two conditions: In one half of the trials the word cue was valid, that is, the target appeared on the cued side. In the other half of the trials the word cue was invalid, that is, the target appeared opposite of the cued side.
Attentional shifts were investigated by analysing reaction time differences and modulations of attention-correlated ERPs as a function of these two conditions. The results did not provide significant evidence in favour of attentional shifts triggered by the subliminal word cues. Behavioural data did not reveal any significant cueing effects, parallel with the electrophysiological data, in which no significant differences in the experimental conditions were found. However, there was a trend toward significance, suggesting that attention shifts still have occurred.
description: In dieser Studie wurden Verhaltensdaten sowie elektrophysiologische Daten erhoben, um das Vorkommen visuell-räumlicher Aufmerksamkeitsverlagerungen infolge nicht-bewusst wahrnehmbarer, richtungsangebender Hinweisreize zu überprüfen. Vor der Darbietung eines Zielreizes (ein Balken in einer Zielreizfarbe) wurde den Testpersonen ein nicht-bewusst wahrnehmbares nicht-prädiktives Hinweiswort („left“ oder „right“) dargeboten. Dabei entstanden valide und invalide Bedingungen: Wenn der Hinweisreiz valide war, erschien der Zielreiz auf der vom Hinweiswort indizierten Seite, wenn der Hinweisreiz invalide war, erschien der Zielreiz nicht auf der indizierten Seite, sondern auf der gegenüberliegenden Seite. In Abhängigkeit valider und invalider Bedingungen wollten wir Unterschiede in den Reaktionszeiten sowie Modulierungen bestimmter EKPs, die mit Aufmerksamkeitsverlagerungen in Verbindung gebracht werden, feststellen. Die Ergebnisse konnten keinen eindeutigen Befund dafür liefern, dass nicht-bewusst wahrnehmbarer Hinweiswörter verarbeitet wurden und Aufmerksamkeitsverlagerungen ausgelöst haben: In den Verhaltensdaten fanden sich keine signifikanten Hinweisreizeffekte. Auch in den elektrophysiologischen Daten wurden keine signifikanten Unterschiede zwischen den Bedingungen gefunden. Allerdings gab es einen Trend zur Signifikanz, der vermuten lässt, dass Aufmerksamkeitsverlagerungen infolge der nicht-bewusst wahrnehmbaren Wörter stattgefunden haben.
On the universality of the Carter and McLenaghan formula
Creators: name: Cotaescu, Ion I
Publisher: name: arXiv
Year: 2008
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: It is shown that the formula of the isometry generators of the spinor representation given by Carter and McLenaghan is universal in the sense that this holds for any representation either in local frames or even in natural ones. The point-dependent spin matrices in natural frames are introduced for any tensor representation deriving the covariant form of the isometry generators in these frames.
description: 7 pages, no figures
Polymer dynamics in time-dependent periodic potentials
Creators: name: Kauttonen, Janne
name: Merikoski, Juha
name: Pulkkinen, Otto
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Dynamics of a discrete polymer in time-dependent external potentials is studied with the master equation approach. We consider both stochastic and deterministic switching mechanisms for the potential states and give the essential equations for computing the stationary state properties of molecules with internal structure in time-dependent periodic potentials on a lattice. As an example, we consider standard and modified Rubinstein-Duke polymers and calculate their mean drift and effective diffusion coefficient in the two-state non-symmetric flashing potential and symmetric traveling potential. Rich non-linear behavior of these observables is found. By varying the polymer length, we find current inversions caused by the rebound effect that is only present for molecules with internal structure. These results depend strongly on the polymer type. We also notice increased transport coherence for longer polymers.
description: 22 pages, 7 figures
Partially-Averaged Navier-Stokes Simulations of Turbulence Within a High-Order Flux Reconstruction Framework
Creators: name: Dzanic, Tarik
name: Girimaji, Sharath
name: Witherden, Freddie
Publisher: name: arXiv
Year: 2021
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: High-order methods and hybrid turbulence models have independently shown promise as means of decreasing the computational cost of scale-resolving simulations. The objective of this work is to develop the combination of these methods and analyze the effects of high-order discretizations on hybrid turbulence models, particularly with respect the optimal model parameters and the relative accuracy benefits compared to approaches such as under-resolved direct numerical simulation (URDNS). We employ the Partially-Averaged Navier-Stokes (PANS) approach using the flux reconstruction scheme on the flow around a periodic hill and the wake flow of a circular cylinder at a Reynolds number of 3900, the latter of which we provide direct numerical simulation results and novel statistical analysis. By increasing the order of the discretization while fixing the total degrees of freedom, it was observed that larger improvements in the prediction of the statistics and flow physics were generally seen with PANS than URDNS. Furthermore, less sensitivity to the resolution-control parameter was observed with a high-order discretization, indicating that high-order discretizations may be an effective approach for increasing the accuracy and reliability of hybrid turbulence models for scale-resolving simulations without a significant increase in computational effort.
description: 20 pages, 13 figures
Probing Quantum Gravity with Imaging Atmospheric Cherenkov Telescopes
Creators: name: Terzić, Tomislav
name: Kerszberg, Daniel
name: Strišković, Jelena
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: High energy photons from astrophysical sources are unique probes for some predictions of candidate theories of Quantum Gravty (QG). In particular, imaging atmospheric Cherenkov telescopes (IACTs) are instruments optimised for astronomical observations in the energy range spanning from a few tens of GeV to ~100 TeV, which makes them excellent instruments to search for effects of QG. In this article, we will review QG effects which can be tested with IACTs, most notably the Lorentz invariance violation and its consequences. It is often represented and modelled with photon dispersion relation modified by introducing energy-dependent terms. We will describe the analysis methods employed in the different studies, allowing for careful discussion and comparison of the results obtained with IACTs for more than two decades. Loosely following historical development of the field, we will observe how the analysis methods were refined and improved over time, and analyse why some studies were more sensitive than others. Finally, we will discuss the future of the field, presenting ideas for improving the analysis sensitivity and directions in which the research could develop.
description: review paper, 47 pages, 3 figures, 2 tables