cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Extraction of Electromagnetic Transition Form Factors for Nucleon Resonances within a Dynamical Coupled-Channels Model
Creators: name: Suzuki, N.
name: Sato, T.
name: Lee, T. -S. H.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We explain the application of a recently developed analytic continuation method to extract the electromagnetic transition form factors for the nucleon resonances ($N^*$) within a dynamical coupled-channel model of meson-baryon reactions.Illustrative results of the obtained $N^*\rightarrow γN$ transition form factors, defined at the resonance pole positions on the complex energy plane, for the well isolated $P_{33}$ and $D_{13}$, and the complicated $P_{11}$ resonances are presented. A formula has been developed to give an unified representation of the effects due to the first two $P_{11}$ poles, which are near the $πΔ$ threshold, but are on different Riemann sheets. We also find that a simple formula, with its parameters determined in the Laurent expansions of $πN \rightarrow πN$ and $γN \rightarrowπN$ amplitudes, can reproduce to a very large extent the exact solutions of the considered model at energies near the real parts of the extracted resonance positions. We indicate the differences between our results and those extracted from the approaches using the Breit-Wigner parametrization of resonant amplitudes to fit the data.
description: 10 pages, 12 figures
Table S1. Participant characteristics (means ± SD) from Alterations of the endocannabinoid system and its therapeutic potential in autism spectrum disorder
Creators: name: Zou, Mingyang
name: Liu, Yu
name: Xie, Shu
name: Wang, Luxi
name: Li, Dexin
name: Li, Ling
name: Wang, Feng
name: Zhang, Yujue
name: Xia, Wei
name: Sun, Caihong
name: wu, Lijie
Publisher: name: The Royal Society
Year: 2021

description: Autism spectrum disorder (ASD) is a group of developmental disabilities, the aetiology of which remains elusive. The endocannabinoid (eCB) system modulates neurotransmission and neuronal plasticity. Evidence points to the involvement of this neuromodulatory system in the pathophysiology of ASD. We investigated whether there is a disruption to the eCB system in ASD and whether pharmacological modulation of the eCB system might offer therapeutic potential. We examined three major components of the eCB system, namely, endogenous cannabinoids, their receptors and associated enzymes, in ASD children as well as in the valproic acid-induced (VPA) animal model in autism. Furthermore, we specifically increased 2-arachidonoylglycerol (2-AG) levels by administering JZL184, a selective inhibitor of monoacylglycerol lipase which is the hydrolytic enzyme for 2-AG, to examine ASD-like behaviours in VPA-induced rats. Results showed that autistic children and VPA-induced rats exhibited reduced eCB content, increased degradation of enzymes and upregulation of CBRs. We found that repetitive and stereotypical behaviours, hyperactivity, sociability, social preference and cognitive functioning improved after acute and chronic JZL184 treatment. The major efficacy of JZL184 was observed after administration of a dosage regimen of 3 mg kg−1, which affected both the eCB system and ASD-like behaviours. In conclusion, a reduced eCB signalling was observed in autistic children and in the ASD animal model, and boosting 2-AG could ameliorate ASD-like phenotypes in animals. Collectively, the results suggested a novel approach to ASD treatment.
Synthesizing attractors of Hindmarsh-Rose neuronal systems
Creators: name: Danca, Marius-F.
name: Wang, Qingyun
Publisher: name: arXiv
Year: 2011
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: In this paper a periodic parameter switching scheme is applied to the Hindmarsh-Rose neuronal system to synthesize certain attractors. Results show numerically, via computer graphic simulations, that the obtained synthesized attractor belongs to the class of all admissible attractors for the Hindmarsh-Rose neuronal system and matches the averaged attractor obtained with the control parameter replaced with the averaged switched parameter values. This feature allows us to imagine that living beings are able to maintain vital behavior while the control parameter switches so that their dynamical behavior is suitable for the given environment.
description: published in Nonlinear Dynamics
title: No Longer High Fliers? An Exploration of Discipline, Identities and Gender Issues while Navigating out of the RAF
Creators: name: Micklewright, Caroline
Publisher: name: The Open University
Year: 2021

description: Annually over 12,000 military personnel leave the Armed Forces; many face tough challenges as they attempt to reintegrate into civilian life. While research has shown that most transition successfully into a second career, less is understood about how the decision to leave effects relationships or the subsequent adaptation to civilian life; even less is understood about women’s experiences. This thesis addressed this gap through a longitudinal study exploring the lived experiences of 20 Royal Air Force personnel, seventeen women, including myself, and three men, as they leave military service. The thesis presents a deeply personal study of transition collected through a series of 41 interviews over two years and is supplemented with autoethnographic reflections. The aim is to understand how disciplinary social forces influence the transition process from the perspective of transitioning military personnel. Theoretically, it adopts a Foucauldian-inspired poststructural approach, drawing on the concept of ‘disciplinary power’, identity theory and poststructural feminism to analyse how subjectification occurs through social relations in a hegemonic masculine culture and how this affects the transition of both male and female personnel. The research addresses the following research questions: Why do personnel feel conflicted about leaving the RAF? How does military service affect gendered identity as individuals re-enter civilian life? The thesis provides theoretical, empirical, and practice-based contributions to the transition experience. From a theoretical perspective the research demonstrates how gendered power relations and discipline can combine to obscure gendered behaviours from the subject and encourage wicked problems. From an empirical perspective, the relationship between military and civilian is revealed as ambiguous and fluid, and how masculinities and femininities can be transformed, resisted, or sustained through narrative identity work and institutionalized practices learned in a male-dominated organization. Finally, several practice-based contributions emerged addressing the gendered nature of previous research into veterans transition.
การจัดการเชิงกลยุทธ์เทคโนโลยีและนวัตกรรม
Creators: name: กฤษฎา ราชรักษ์
Publisher: name: คณะนิเทศศาสตร์ มหาวิทยาลัยราชภัฏรำไพพรรณี
Year: 2022
Subjects: การจัดการเชิงกลยุทธ์เทคโนโลยีและนวัตกรรม

description: วารสารสหวิทยาการสังคมศาสตร์และการสื่อสาร, 5, 3, 204-207
Positive Quantization in the Presence of a Variable Magnetic Field
Creators: name: Mantoiu, M.
name: Purice, R.
name: Richard, S.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Starting with a previously constructed family of coherent states, we introduce the Berezin quantization for a particle in a variable magnetic field and we show that it constitutes a strict quantization of a natural Poisson algebra. The phase-space reinterpretation involves a magnetic version of the Bargmann space and leads naturally to Berezin-Toeplitz operators.
description: 15 pages
Effectiveness in RPL, with Applications to Continuous Logic
Creators: name: Didehvar, Farzad
name: Ghasemloo, Kaveh
name: Pourmahdian, Massoud
Publisher: name: arXiv
Year: 2010
Subjects: subject: Logic (math.LO)
subject: Logic in Computer Science (cs.LO)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 03D45 (Primary), 03B50 (Secondary)

description: In this paper, we introduce a foundation for computable model theory of rational Pavelka logic (an extension of Łukasiewicz logic) and continuous logic, and prove effective versions of some theorems in model theory. We show how to reduce continuous logic to rational Pavelka logic. We also define notions of computability and decidability of a model for logics with computable, but uncountable, set of truth values; show that provability degree of a formula w.r.t. a linear theory is computable, and use this to carry out an effective Henkin construction. Therefore, for any effectively given consistent linear theory in continuous logic, we effectively produce its decidable model. This is the best possible, since we show that the computable model theory of continuous logic is an extension of computable model theory of classical logic. We conclude with noting that the unique separable model of a separably categorical and computably axiomatizable theory (such as that of a probability space or an $L^p$ Banach lattice) is decidable.
Non-Stationary Dark Energy Around a Black Hole
Creators: name: Akhoury, Ratindranath
name: Garfinkle, David
name: Saotome, Ryo
name: Vikman, Alexander
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Numerical simulations of the accretion of test scalar fields with non-standard kinetic terms (of the k-essence type) onto a Schwarzschild black hole are performed. We find a full dynamical solution for the spherical accretion of a Dirac-Born-Infeld type scalar field. The simulations show that the accretion eventually settles down to a well known stationary solution. This particular analytical steady state solution maintains two separate horizons. The standard horizon is for the usual particles propagating with the limiting speed of light, while the other sonic horizon is for the k-essence perturbations propagating with the speed of sound around this accreting background. For the case where the k-essence perturbations propagate superluminally, we show that one can send signals from within a black hole during the approach to the stationary solution. We also find that a ghost condensate model settles down to a stationary solution during the accretion process.
description: 8 pages, 10 figures
Deterministic and stochastic aspects of VEGF-A production and the cooperative behavior of tumoral cell colony
Creators: name: Laise, Pasquale
name: Di Patti, Francesca
name: Fanelli, Duccio
name: Masselli, Marika
name: Arcangeli, Annarosa
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cell Behavior (q-bio.CB)
subject: FOS: Biological sciences

description: A model is proposed to study the process of hypoxia-induced angiogenesis in cancer cells. The model accounts for the role played by the vascular endothelial growth factor (VEGF)-A in regulating the oxygen intake. VEGF-A is dynamically controlled by the HIF-1alpha concentration. If not degraded, HIF-1alpha can bind to the subunit termed HIF-1beta and so experience translocation to the nucleus, to exert its proper transcriptional activity. The delicate balance between these opposing tendencies translates into the emergence of distinct macroscopic behaviors in terms of the associated molecular concentrations that we here trace back to normoxia, hypoxia and death regimes. These aspects are firstly analyzed with reference to the ideal mean-field scenario. Stochastic fluctuations are also briefly discussed and shown to seed a cooperative interaction among cellular units, competing for the same oxygen reservoir.
description: 20 pages, 6 figures, to appear in J. Theor. Biol
Neutrino Masses from Loop-Induced Dirac Yukawa Couplings
Creators: name: Kanemura, Shinya
name: Nabeshima, Takehiro
name: Sugiyama, Hiroaki
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider a possibility to naturally explain tiny neutrino masses without the lepton number violation. We study a simple model with SU(2)_L singlet charged scalars (s_1^+, s_2^+) as well as singlet right-handed neutrino (nu_R). Yukawa interactions for Dirac neutrinos, which are forbidden at the tree level by a softly-broken Z_2 symmetry, are induced at the one-loop level via the soft-breaking term in the scalar potential. Consequently neutrinos obtain small Dirac masses after the electroweak symmetry breaking. It is found that constrains from neutrino oscillation measurements and lepton flavor violation search results (especially for mu to e gamma) can be satisfied. We study the decay pattern of the singlet charged scalars, which could be tested at the LHC and the ILC. We discuss possible extensions also, e.g. to introduce dark matter candidate.
description: 14 pages, 1 figure
Robust Beamforming for Security in MIMO Wiretap Channels with Imperfect CSI
Creators: name: Mukherjee, Amitav
name: Swindlehurst, A. Lee
Publisher: name: arXiv
Year: 2010
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: In this paper, we investigate methods for reducing the likelihood that a message transmitted between two multiantenna nodes is intercepted by an undetected eavesdropper. In particular, we focus on the judicious transmission of artificial interference to mask the desired signal at the time it is broadcast. Unlike previous work that assumes some prior knowledge of the eavesdropper's channel and focuses on maximizing secrecy capacity, we consider the case where no information regarding the eavesdropper is available, and we use signal-to-interference-plus-noise-ratio (SINR) as our performance metric. Specifically, we focus on the problem of maximizing the amount of power available to broadcast a jamming signal intended to hide the desired signal from a potential eavesdropper, while maintaining a prespecified SINR at the desired receiver. The jamming signal is designed to be orthogonal to the information signal when it reaches the desired receiver, assuming both the receiver and the eavesdropper employ optimal beamformers and possess exact channel state information (CSI). In practice, the assumption of perfect CSI at the transmitter is often difficult to justify. Therefore, we also study the resulting performance degradation due to the presence of imperfect CSI, and we present robust beamforming schemes that recover a large fraction of the performance in the perfect CSI case. Numerical simulations verify our analytical performance predictions, and illustrate the benefit of the robust beamforming schemes.
description: 10 pages, 5 figures; to appear, IEEE Transactions on Signal Processing, 2010
The Phase Shifts of the Paired Wings of Butterfly Diagrams
Creators: name: Li, Kejun
name: Liang, Hongfei
name: Feng, Wen
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Sunspot groups observed by Royal Greenwich Observatory/US Air Force/NOAA from May 1874 to November 2008 and the Carte Synoptique solar filaments from March 1919 to December 1989 are used to investigate the relative phase shift of the paired wings of butterfly diagrams of sunspot and filament activities. Latitudinal migration of sunspot groups (or filaments) does asynchronously occur in the northern and southern hemispheres, and there is a relative phase shift between the paired wings of their butterfly diagrams in a cycle, making the paired wings spatially asymmetrical on the solar equator. It is inferred that hemispherical solar activity strength should evolve in a similar way within the paired wings of a butterfly diagram in a cycle, making the paired wings just and only keep the phase relationship between the northern and southern hemispherical solar activity strengths, but a relative phase shift between the paired wings of a butterfly diagram should bring about an almost same relative phase shift of hemispheric solar activity strength.
Extensions of the Poincare group
Creators: name: Antoniadis, Ignatios
name: Brink, Lars
name: Savvidy, George
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We construct an extension of the Poincare group which involves a mixture of internal and space-time supersymmetries. The resulting group is an extension of the superPoincare group with infinitely many generators which carry internal and space-time indices. It is a closed algebra since all Jacobi identities are satisfied and it has therefore explicit matrix representations. We investigate the massless case and construct the irreducible representations of the extended symmetry. They are divided into two sets, longitudinal and transversal representations. The transversal representations involve an infinite series of integer and half-integer helicities. Finally we suggest an extension of the conformal group along the same line.
description: 13 pages, LaTex file
Prognostic role of BRAF in human cutaneous melanoma : gene versus protein expression
Creators: name: Safaee Ardekani, Gholamreza
Publisher: name: University of British Columbia
Year: 2015

description: Melanoma is the deadliest type of skin cancer with an increasing incidence for past two decades. Once melanoma is metastasized (cancer cells are spread out through the body) there is no effective treatment available and 84% of the patients die within 5 years. However, the discovery of braf mutation in melanoma increased the hope for developing new treatments. We first evaluated the effect of braf V600E mutation on melanoma patient survival. In a systematic review we revealed that patients with braf V600E mutation have almost two times more risk of death compared with patients with wild type braf. Next we evaluated the correlation of brafV600E mutation with protein expression. We found that compared with nevi samples, BRAF protein expression was remarkably increased in primary melanomas and further increased in metastatic melanoma patients. Higher BRAF protein expression was significantly correlated with other poor prognosis factors and lead to a significant worse five-year survival. However, we did not find a significant correlation between BRAF protein expression and braf V600E mutation. In our attempt to investigate the cause of induced BRAF protein, we found novel expression of BRAF splice variants (BRAFsv) in both melanoma patients and cell lines. We identified new kinase-dead BRAFsv, which have a dominant negative effect on full-length BRAF and are able to suppress downstream signaling and reduce melanoma cell proliferation. These variants were highly expressed in primary melanoma compared to normal samples, while the expression was decreased in metastatic and more aggressive types of melanoma. In addition, kinase-dead BRAFsv showed a protective effect on patient survival, which remained significant at the presence of full-length BRAF. Thus, patients who expressed the kinase-dead variant and had lower levels of full-length BRAF expression showed the best survival rate in 5 years. Our invitro analysis also indicates that over expression of kinase-dead BRAFsv in melanoma cell lines enhances the effect of BRAF inhibitor treatment. All in all, the data presented in this thesis elucidated a new era in the evaluation of melanoma patient prognosis and revealed new possibilities for more effective melanoma treatments.
A note on the efficient implementation of Hamiltonian BVMs
Creators: name: Brugnano, Luigi
name: Iavernaro, Felice
name: Trigiante, Donato
Publisher: name: arXiv
Year: 2010
Subjects: subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 65P10, 65L05

description: We discuss the efficient implementation of Hamiltonian BVMs (HBVMs), a recently introduced class of energy preserving methods for canonical Hamiltonian systems, via their blended formulation. We also discuss the case of separable problems, for which the structure of the problem can be exploited to gain efficiency.
description: 10 pages, 4 figures
title: Διάλογος δημόσιου χώρου και πολιτισμού: Η περίπτωση των Χανίων
title: Dialogue between public space and culture: The case of Chania
Creators: name: Μαζιωτη Αργυρω
name: Τσιμινικακη Δαναη-Αλεξανδρα-Λιλυ
Publisher: name: Technical University of Crete
Year: 2025

description: Ο δημόσιος χώρος αποτελεί αναπόσπαστο κομμάτι της σύγχρονης πόλης, λειτουργώντας ως χώρος συνάντησης, κοινωνικής αλληλεπίδρασης και πολιτιστικής έκφρασης. Από την αρχαιότητα, αποτελούσε το κυριότερο πεδίο πολιτιστικής δραστηριότητας και το κέντρο της συλλογικής ζωής. Με την πάροδο των χρόνων και την εξέλιξη των πολιτιστικών απαιτήσεων, ο κυρίαρχος πολιτιστικός ρόλος των υπαίθριων δημόσιων χώρων άρχισε να εξασθενεί,  καθώς παραχώρησε τη θέση του στην ανάπτυξη κλειστών, εξειδικευμένων πολιτιστικών χώρων. Η στροφή προς τη δημιουργία νέων υποδομών περιόρισε τους υπαίθριους χώρους σε απλό συμπλήρωμα της πόλης καθώς δεν δόθηκε έμφαση στη σύνδεση τους με τα νέα κτίρια. Στη σημερινή εποχή, παρατηρείται ότι μόνο οι υπαίθριοι δημόσιοι χώροι που γειτνιάζουν με πολιτιστικά κτίρια διατηρούν την πολιτιστική τους ταυτότητα, ενώ οι υπόλοιποι παραμένουν αδρανείς. Στα πλαίσια της ανάδειξης της σημασίας της αλληλεπίδρασης πολιτιστικών υποδομών και υπαίθριων δημόσιων χώρων, θα εξεταστούν παραδείγματα όπου αυτή η πολιτιστική ταυτότητα διατηρείται. Η ανάλυση αυτών των πρακτικών αποσκοπεί στην προτροπή μιας συζήτησης σχετικά με την ενίσχυση και ανάκτηση του πολιτιστικού ρόλου των υπαίθριων δημόσιων χώρων στα Χανιά. Μπορεί η πολιτιστική αλληλεπίδραση με τα κτίρια να τους επαναπροσδιορίσει σε πολιτιστικούς πυρήνες; Πως υποστηρίζει ο κατάλληλος σχεδιασμός την μακροπρόθεσμη βιωσιμότητα τους;
description: It is without a doubt that public space is an essential part of the modern city, serving as a meeting place, a space for social interaction and a medium for cultural expression. Since ancient times, it has been the primary setting of cultural activity and the center of collective life. However, over the years, and with the evolution of cultural needs, the once dominant cultural role of public spaces started to decline, giving way to the development of enclosed, specialized cultural venues. The shift towards the creation of new facilities, relegated public spaces to mere complements of the modern city rather than cultural entities, due to the lack of emphasis on their integration with the new buildings. Nowadays, it is observed that only public spaces adjacent to cultural venues retain some degree of cultural identity, while the rest remain inactive. In the context of highlighting the importance of the interaction between buildings and public spaces, this study will examine cases where cultural identity has been preserved. This analysis aims to initiate a discussion on enhancing and reclaiming the cultural role of public spaces in Chania. Can the cultural interaction between buildings and public spaces redefine them as cultural landmarks? How does effective design support their long - term sustainability?
PhishDef: URL Names Say It All
Creators: name: Le, Anh
name: Markopoulou, Athina
name: Faloutsos, Michalis
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cryptography and Security (cs.CR)
subject: Machine Learning (cs.LG)
subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Phishing is an increasingly sophisticated method to steal personal user information using sites that pretend to be legitimate. In this paper, we take the following steps to identify phishing URLs. First, we carefully select lexical features of the URLs that are resistant to obfuscation techniques used by attackers. Second, we evaluate the classification accuracy when using only lexical features, both automatically and hand-selected, vs. when using additional features. We show that lexical features are sufficient for all practical purposes. Third, we thoroughly compare several classification algorithms, and we propose to use an online method (AROW) that is able to overcome noisy training data. Based on the insights gained from our analysis, we propose PhishDef, a phishing detection system that uses only URL names and combines the above three elements. PhishDef is a highly accurate method (when compared to state-of-the-art approaches over real datasets), lightweight (thus appropriate for online and client-side deployment), proactive (based on online classification rather than blacklists), and resilient to training data inaccuracies (thus enabling the use of large noisy training data).
description: 9 pages, submitted to IEEE INFOCOM 2011
Thermal nuclear pairing within the self-consistent quasiparticle RPA
Creators: name: Dang, N. Dinh
name: Hung, N. Quang
Publisher: name: arXiv
Year: 2010
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The self-consistent quasiparticle RPA (SCQRPA) is constructed to study the effects of fluctuations on pairing properties in nuclei at finite temperature and z-projection M of angular momentum. Particle-number projection (PNP) is taken into account within the Lipkin-Nogami method. Several issues such as the smoothing of superfluid-normal phase transition, thermally assisted pairing in hot rotating nuclei, extraction of the nuclear pairing gap using an improved odd-even mass difference are discussed. A novel approach of embedding the PNP SCQRPA eigenvalues in the canonical and microcanonical ensembles is proposed and applied to describe the recent empirical thermodynamic quantities for iron, molybdenum, dysprosium, and ytterbium isotopes.
description: 6 pages, 5 figures, talk presented at the 10th International Spring Seminar on Nuclear Physics "New Quests in Nuclear Structure", Vietri sul Mare, May 21 - 25, 2010
Nonplanar Integrability: Beyond the SU(2) Sector
Creators: name: Koch, Robert de Mello
name: Mohammed, Badr Awad Elseid
name: Smith, Stephanie
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We compute the one loop anomalous dimensions of restricted Schur polynomials with a classical dimension Δ\sim O(N). The operators that we consider are labeled by Young diagrams with two long columns or two long rows. Simple analytic expressions for the action of the dilatation operator are found. The projection operators needed to define the restricted Schur polynomials are constructed by translating the problem into a spin chain language, generalizing earlier results obtained in the SU(2) sector of the theory. The diagonalization of the dilatation operator reduces to solving five term recursion relations. The recursion relations can be solved exactly in terms of products of symmetric Kravchuk polynomials with Hahn polynomials. This proves that the dilatation operator reduces to a decoupled set of harmonic oscillators and therefore it is integrable, extending a similar conclusion reached for the SU(2) sector of the theory.
description: 32 pages
The Origin of Gamma-Rays from Globular Clusters
Creators: name: Cheng, K. S.
name: Chernyshov, D. O.
name: Dogiel, V. A.
name: Hui, C. Y.
name: Kong, A. K. H.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Fermi has detected gamma-ray emission from eight globular clusters. We suggest that the gamma-ray emission from globular clusters may result from the inverse Compton scattering between relativistic electrons/positrons in the pulsar wind of MSPs in the globular clusters and background soft photons including cosmic microwave/relic photons, background star lights in the clusters, the galactic infrared photons and the galactic star lights. We show that the gamma-ray spectrum from 47 Tuc can be explained equally well by upward scattering of either the relic photons, the galactic infrared photons or the galactic star lights whereas the gamma-ray spectra from other seven globular clusters are best fitted by the upward scattering of either the galactic infrared photons or the galactic star lights. We also find that the observed gamma-ray luminosity is correlated better with the combined factor of the encounter rate and the background soft photon energy density. Therefore the inverse Compton scattering may also contribute to the observed gamma-ray emission from globular clusters detected by Fermi in addition to the standard curvature radiation process. Furthermore, we find that the emission region of high energy photons from globular cluster produced by inverse Compton scattering is substantially larger than the core of globular cluster with a radius >10pc. The diffuse radio and X-rays emitted from globular clusters can also be produced by synchrotron radiation and inverse Compton scattering respectively. We suggest that future observations including radio, X-rays, and gamma-rays with energy higher than 10 GeV and better angular resolution can provide better constraints for the models.
description: Accepted by ApJ, Comments may send to Prof. K.S. Cheng: hrspksc@hkucc.hku.hk
title: Data Trusts: Ethics, Architecture and Governance for Trustworthy Data Stewardship
Creators: name: O'hara, Kieron
Publisher: name: University of Southampton
Year: 2019
Subjects: subject: Web Science Institute
subject: Trust
subject: Ethics, Data Sharing
subject: Data Sharing
subject: Trustworthiness
subject: Governance
subject: Trust law
subject: equity
subject: web observatory

description: In their report on the development of the UK AI industry, Wendy Hall and Jerome Pesenti recommend the establishment of data trusts, âproven and trusted frameworks and agreementsâ that will âensure exchanges [of data] are secure and mutually beneficialâ by promoting trust in the use of data for AI. This paper defends the following thesis: A data trust works within the law to provide ethical, architectural and governance support for trustworthy data processing. Data trusts are therefore both constraining and liberating. They constrain: they respect current law, so they cannot render currently illegal actions legal. They are intended to increase trust, and so they will typically act as further constraints on data processors, adding the constraints of trustworthiness to those of law. Yet they also liberate: if data processors are perceived as trustworthy, they will get improved access to data.
The paper addresses the areas of: trust and trustworthiness; ethics; architecture; legal status.
Supplementary material from"Effects of hypoxia on the thermal physiology of a high-elevation lizard: implications for upslope-shifting species"
Creators: name: Jiang, Zhong-wen
name: Ma, Liang
name: Mi, Chun-rong
name: Du, Wei-guo
Publisher: name: The Royal Society
Year: 2021

description: Fig.S1 Critical thermal minimum (CTmin, A) and maximum (CTmax, B) of Qinghai toad-headed lizards (Phrynocephalus vlangalii) from two elevations (2600 m and 3600 m asl), exposed to control and hypoxia treatments. The horizontal line in each box denotes the median, and the top and bottom edges of the box indicate the 75th and 25th percentiles, respectively. Whiskers above and below the box represent the 90th and 10th percentiles, correspondingly. Solid points beyond the whiskers indicate outliers, and the hollow points represent each sample.
Matter in inhomogeneous loop quantum cosmology: the Gowdy $T^3$ model
Creators: name: Martín-Benito, Mercedes
name: Blas, Daniel Martín-de
name: Marugán, Guillermo A. Mena
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We apply a hybrid approach which combines loop and Fock quantizations to fully quantize the linearly polarized Gowdy $T^3$ model in the presence of a massless scalar field with the same symmetries as the metric. Like in the absence of matter content, the application of loop techniques leads to a quantum resolution of the classical cosmological singularity. Most importantly, thanks to the inclusion of matter, the homogeneous sector of the model contains flat Friedmann-Robertson-Walker (FRW) solutions, which are not allowed in vacuo. Therefore, this model provides a simple setting to study at the quantum level interesting physical phenomena such as the effect of the anisotropies and inhomogeneities on flat FRW cosmologies.
description: 12 pages, submitted to PRD
Prädiktive Lichtfunktionen für volladaptive Scheinwerfersysteme
Creators: name: Omerbegovic, Said
Publisher: name: KIT Scientific Publishing
Year: 2019
Subjects: Lichtbasierte Assistenzsysteme
Prädiktive Lichtfunktionen
Manöverdetektion
Trajektorienprädiktion
light-based assistance systems
predictive light functions
maneuver detection
trajectory prediction

description: Diese Arbeit untersucht eine Umsetzung des blendfreien Fernlichts, die auf der Voraussage der Bewegung des Egofahrzeugs und anderer Verkehrsteilnehmer beruht. Des Weiteren werden Lichtfunktionen entwickelt und auf ihre Wirksamkeit analysiert, die situationsspezifische Handlungsempfehlungen bei Abbiege- oder Spurwechselintentionen des Fahrers auf die Fahrbahn vor das Fahrzeug projizieren.
Effects of Chern-Simons Corrections on Conserved Quantities of Relativistic Fluid
Creators: name: Konno, Kohkichi
name: Matsuyama, Toyoki
name: Tanda, Satoshi
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider relativistic fluid flow under Chern-Simons modified Maxwell theory and under Chern-Simons modified gravity theory. We take account of the effects of Chern-Simons corrections on the quantities of fluid flow that are conserved without the Chern-Simons corrections. We find that the conservations of several quantities are generally broken by the Chern-Simons corrections.
description: 12 pages, Accepted for publication in Modern Physics Letters A
Structure of the doublet bands in doubly odd nuclei: The case of $^{128}Cs$
Creators: name: Ganev, H. G.
name: Brant, S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The structure of the $ΔJ = 1$ doublet bands in $^{128}Cs$ is investigated within the framework of the Interacting Vector Boson Fermion Model (IVBFM). A new, purely collective interpretation of these bands is given on the basis of the used boson-fermion dynamical symmetry of the model. The energy levels of the doublet bands as well as the absolute $B(E2)$ and $B(M1)$ transition probabilities between the states of both yrast and yrare bands are described quite well. The observed odd-even staggering of both $B(M1)$ and $B(E2)$ values is reproduced by the introduction of an appropriate interaction term of quadrupole type, which produces such a staggering effect in the transition strengths. The calculations show that the appearance of doublet bands in certain odd-odd nuclei could be a consequence of the realization of a larger dynamical symmetry based on the non-compact supersymmetry group $OSp(2Ω/12, R)$.
description: 12 pages, 8 figures
Calibration and validation of traffic microsimulation models for safety evaluation using automated video-based conflict analysis
Creators: name: Essa, Mohamed
Publisher: name: University of British Columbia
Year: 2015

description: Recently, there has been a growing interest in using microsimulation models for the safety assessment of road facilities by analyzing vehicle trajectories and estimating conﬂict indicators. Using microsimulation in safety studies can have several advantages. However, concerns have been raised about the ability of these models to realistically represent unsafe vehicle interactions and near misses and the need for a rigorous model calibration. The main objective of this thesis is to investigate the relationship between field-measured traffic conflicts and simulated traffic conflicts at signalized intersections. Automated video-based computer vision techniques were used to extract vehicle trajectories and identify field-measured rear-end conflicts. Conflict measures (e.g. time-to-collision (TTC)) and locations were determined and compared with simulated conflicts from the Surrogate Safety Assessment Model (SSAM) by analyzing the vehicles trajectories extracted from two microsimulation models: VISSIM and PARAMICS. To increase the correlation between simulated and field-measured conflicts, a two-step calibration procedure of the simulation models was proposed and validated. In the first calibration step, the simulation model was calibrated to ensure that the simulation gives reasonable results of average delay times. Then, in the second calibration step, a Genetic Algorithm procedure was used to calibrate the safety-related parameters in the simulation model. The correlation between simulated and field-measured conflicts was investigated at different thresholds of TTC. The results obtained from VISSIM and PARAMICS were compared. Furthermore, the transferability of the calibrated simulation models for safety analysis between different sites was investigated. As well, the spatial distributions of the field-measured and the simulated conflicts were compared through conflict heat maps. Overall, good correlation between field-measured and simulated conflicts was obtained after calibration for both models especially at higher TTC values. Also, the results showed that the simulation model parameters are generally transferable between different locations as the transferred parameters provided better correlation between simulated and field-measured conflicts than using the default parameters. The heat maps showed that there were major differences between field-measured and simulated conflicts spatial distribution for both simulation models. This indicates that despite the good correlation obtained, both PARAMICS and VISSIM do not capture the actual conflict occurrence mechanism.
Relationship between group sunspot number and Wolf sunspot number
Creators: name: Li, Kejun
name: Liang, Hongfei
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Continuous wavelet transform and cross-wavelet transform have been used to investigate the phase periodicity and synchrony of the monthly mean Wolf ($R_{z}$) and group ($R_{g}$) sunspot numbers during the period of June 1795 to December 1995. The Schwabe cycle is the only one common period in Rg and Rz, but it is not well-defined in case of cycles 5-7 of Rg and in case of cycles 5 and 6 of $R_{z}$. In fact, the Schwabe period is slightly different in $R_{g}$ and $R_{z}$ before cycle 12, but from cycle 12 onwards it is almost the same for the two time series. Asynchrony of the two time series is more obviously seen in cycles 5 and 6 than in the following cycles, and usually more obviously seen around the maximum time of a cycle than during the rest of the cycle. $R_{g}$ is found to fit $R_{z}$ better in both amplitudes and peak epoch during the minimum time time of a solar cycle than during the maximum time of the cycle, which should be caused by their different definition, and around the maximum time of a cycle, $R_{g}$ is usually less than $R_{z}$. Asynchrony of $R_{g}$ and $R_{z}$ should somewhat agree with different sunspot cycle characteristics exhibited by themselves.
Usos tradicionales del fuego en localidades de Manabí, Ecuador
Creators: name: Ramos Rodríguez, Marcos Pedro
name: Molina Terrén, Domingo M.
Publisher: name: figshare
Year: 2023
Subjects: Forestry fire management

description: Este artículo de divulgación ha sido elaborado a partir del desarrollo de tres investigaciones las cuales fueron publicadas en la Revista Forestal Mesoamericana Kurú (artículo 1), la Revista Cubana de Ciencias Forestales (artículo 2), y la Revista Bosques Latitud Cero (artículo 3), cuyo objetivo fue analizar los usos tradicionales del fuego, cuestión a considerar en el manejo de la tierra, en cuatro localidades de la provincia Manabí, Ecuador. Los objetivos específicos fueron: a) Caracterizar el uso del fuego en las áreas objeto de estudio; b) Determinar las medidas de protección que tienen en cuenta los productores; y c) Verificar la percepción de los productores sobre los efectos del fuego.
Phase Structure of the Interacting Vector Boson Model
Creators: name: Ganev, H. G.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The two-fluid Interacting Vector Boson Model (IVBM) with the U(6) as a dynamical group possesses a rich algebraic structure of physical interesting subgroups that define its distinct exactly solvable dynamical limits. The classical images corresponding to different dynamical symmetries are obtained by means of the coherent state method. The phase structure of the IVBM is investigated and the following basic phase shapes, connected to a specific geometric configurations of the ground state, are determined: spherical, $U_{p}(3)\otimes U_{n}(3)$, $γ-$unstable, O(6), and axially deformed shape, $SU(3)\otimes U_{T}(2)$. The ground state quantum phase transitions between different phase shapes, corresponding to the different dynamical symmetries and mixed symmetry case, are investigated.
description: 9 pages, 10 figures
Optical Force on Two-level Atoms by Few-cycle Pulsed Gaussian Laser field beyond the Rotating Wave Approximation
Creators: name: Kumar, Parvendra
name: Sarma, Amarendra K.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We report a study on light force on a beam of neutral two-level atoms superimposed upon a few-cycle pulsed Gaussian laser field under both resonant and off-resonant condition. The phenomena of focusing, defocusing and steering of the neutral atoms in the laser field is analysed by solving the optical Bloch equation beyond the rotating wave approximation and the force equation self-consistently .We find that two-level atoms in an atomic beam could be focused and defocused for large, positively and negatively detuned interaction even in the regime of extreme nonlinear optics. The so-called optical potential may be used for stable trapping of the neutral two-level atoms for large positively detuned interaction. This work successfully reproduces some of the features reported in recent experimental and theoretical works.
MPEC 2023-H196 : 2023 HK5
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 HK5

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.
Additional file 1 of Promoting physical activity in a multi-ethnic population at high risk of diabetes: the 48-month PROPELS randomised controlled trial
Creators: name: Khunti, Kamlesh
name: Griffin, Simon
name: Brennan, Alan
name: Dallosso, Helen
name: Davies, Melanie J.
name: Eborall, Helen C.
name: Edwardson, Charlotte L.
name: Gray, Laura J.
name: Hardeman, Wendy
name: Heathcote, Laura
name: Henson, Joe
name: Pollard, Daniel
name: Sharp, Stephen J.
name: Sutton, Stephen
name: Troughton, Jacqui
name: Yates, Tom
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Science Policy
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Computational Biology

description: Additional file 1:. Characteristics of those with complete and missing primary outcome data by group.
Active microcantilevers based on piezoresistive ferromagnetic thin films
Creators: name: Bhaskaran, Harish
name: Li, Mo
name: Garcia-Sanchez, Daniel
name: Zhao, Peng
name: Takeuchi, Ichiro
name: Tang, Hong X
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We report the piezoresisitivity in magnetic thin films of FeGa and their use for fabricating self transducing microcantilevers. The actuation occurs as a consequence of both the ferromagnetic and magnetostrictive property of FeGa thin films, while the deflection readout is achieved by exploiting the piezoresisitivity of these films. This self-sensing, self-actuating micromechanical system involves a very simple bilayer structure, which eliminates the need for the more complex piezoelectric stack that is commonly used in active cantilevers. Thus, it potentially opens opportunities for remotely actuated, cantilever-based sensors.
description: 10 Pages, 3 Figures
Simultaneous Description of Even-Even, Odd-Mass and Odd-Odd Nuclear Spectra
Creators: name: Ganev, H. G.
name: Georgieva, A. I.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The orthosymplectic extension of the Interacting Vector Boson Model (IVBM) is used for the simultaneous description of the spectra of different families of neighboring heavy nuclei. The structure of even-even nuclei is used as a core on which the collective excitations of the neighboring odd-mass and odd-odd nuclei are built on. Hence, the spectra of the odd-mass and odd-odd nuclei arise as a result of the consequent and self-consistent coupling of the fermion degrees of freedom of the odd particles, specified by the fermion sector $SO^{F}(2Ω)\subset OSp(2Ω/12,R)$, to the boson core which states belong to an $Sp^{B}(12,R)$ irreducible representation. The theoretical predictions for different low-lying collective bands with positive and negative parity for two sets of neighboring nuclei with distinct collective properties are compared with experiment and IBM/IBFM/IBFFM predictions. The obtained results reveal the applicability of the used dynamical symmetry of the model.
description: 6 pages, 1 figure, A talk given at the 7th International Conference of the Balkan Physical Union, September 9-13, 2009, Alexandropoulos, Greece