cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Thick Dirac-Nambu-Goto branes on black hole backgrounds
Creators: name: Czinner, Viktor G.
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Thickness corrections to static, axisymmetric Dirac-Nambu-Goto branes embedded into spherically symmetric black hole spacetimes with arbitrary number of dimensions are studied. First, by applying a perturbative approximation, it is found that the thick solutions deviate significantly in their analytic properties from the thin ones near the axis of the system, and perturbative approaches around the thin configurations can not provide regular thick solutions above a certain dimension. For the general case, a non-perturbative, numerical approach is applied and regular solutions are obtained for arbitrary brane and bulk dimensions. As a special case, it has been found that 2-dimensional branes are exceptional, as they share their analytic properties with the thin branes rather than the thick solutions of all other dimensions.
description: 4 pages, 2 figures, Proceedings of the Spanish Relativity Meeting in Portugal ERE2012
Investigating Scientific Collaboration of Iranian Psychology and Psychiatry Researchers
Publisher: name: Iranian Journal of Information Processing and Management
Year: 2013

description: Present scientometric study aims to investigate the\nscholarly collaboration of Iranian psychology and psychiatry\nresearchers in the Web of Science database during 2006-2010.\nA total of 1172 documents in the area of psychology and\npsychiatry which specified Iranian universities and research centers as\ntheir affiliated institution and indexed in the Web of Science were\nselected as the sample of the study. The results of the study revealed\nthat 83.278% of the Iranian scientific publications in psychology and\npsychiatry have been produced through research cooperation that\nreflected the tendency of these researchers to scientific collaboration.\nAdditionally, 94.49% of the total citations have been received by\ncollaborative publications. The study of co-authorship patterns of\nIranian psychology and psychiatry researchers showed that\npublications with two authors constituted the highest proportion of\ncollaborative publications, followed by publications with three\nauthors and individual publications. Moreover, Iranian psychology\nand psychiatry researchers were more willing to participate in inter-\ninstitutional collaboration (52.46%) than intra-institutiona collaboration (47.54%). The analysis of the social network of universities and research\ncenters using the UCINET software revealed that the Tehran University of Medical\nSciences as well as the Islamic Azad University has the highest centrality degree with a\nvalue of 56 and 55, respectively. Additionally, based on the results, although Iranian\npsychology and psychiatry researchers preferred domestic scientific collaboration\n(83.4%) to international scientific collaboration (16.6%), however the impact of\ninternational collaboration was higher than domestic collaboration. Finally, 76 countries\nof the world had scientific collaboration with Iranian researchers. Among them, USA,\nAustralia and UK had the highest collaboration rate with Iranian researchers in\npsychology and psychiatry
Ethical Behaviour and Moral Decision Making within Virtual Worlds
Creators: name: Smith, Thomas
Publisher: name: University of Lincoln
Year: 2023
Subjects: I100 - Computer science

description: This thesis explores how immersion in a virtual world (video games and virtualreality) affects moral decision making. In this work, two studies were conductedto explore the effects of each of these virtual worlds.To explore the effects of immersion in video games, participants were given one oftwo surveys. One survey focused on their personal moral decision making, andthe other focused on their video game characters moral decision making. Littledifference was seen between the choices in each survey, saving the majority wasthe most significant and common choice made, and the immersion of their videogame characters proved to have no effect on their moral decision making. Thissuggests the immersion as their characters has no affect on their moral decisionmaking within hypothetical moral dilemmas.To explore the effects of immersion in virtual reality, two well-known moraldilemmas known as the “Trolley Problem” and the “Fat Man Problem” wererecreated for the study, and contained several variations. A variety of factors thatmay influence the moral decision making were considered, such as the charactersused in the dilemmas, gender differences, involvement and more. A majority ofparticipants made similar choices throughout the “Trolley Problem” with slightvariations seen in the “Fat Man Problem”. The driving factor for these moraldecisions appeared to be the character involved and the individuals attitudetowards the simulation.The main difference found throughout these studies was between the choices madein hypothetical dilemmas (first study) and practical dilemmas (second study),due to the level of immersion, involvement, and attitudes of the participants.
Analytical Study of Interdisciplinary Relations in Selected High Priority Areas of Science and Technology Based on Data of ISI Database
Publisher: name: Iranian Research Institute for Information Science and Technology (IranDoc)
Year: 2013

description: The purpose of this research is to investigate the interdisciplinary relations in selected high priority areas of science and technology based on ISI data. This is an applied study using scientometric, citation analysis and network analysis methods. After identifying and extracting data from WOS, in order to determine the interdisciplinary relations and the evolution of these relationships, all citations of these records have been analysed. In order to judge the interdisciplinarity of data, the results of the two approaches have been considered: 1-To determine the subject areas of the journals 2- To determine the institutional affiliation of the authors.There is a positive correlation between co-authorship and interdisciplinary approach in all studied areas. There is no significant relation between the number of citations and interdisciplinary approach. Mapping of interdisciplinary relationships in nanotechnology showed this is a unique method to discover the structural patterns of a research area.
Relationship Between the Kinetic Power and Bolometric Luminosity of Jets: limitation from black hole X-ray binaries, active galactic nuclei, and gamma-ray bursts
Creators: name: Ma, Renyi
name: Xie, Fu-Guo
name: Hou, Shujin
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The correlation between the kinetic power $P_{\rm jet}$ and intrinsic bolometric luminosity $L_{\rm jet}$ of jets may reveal the underlying jet physics in various black hole systems. Based on the recent work by Nemmen et al. (2012), we re-investigate this correlation with additional sources of black-hole X-ray binaries (BXBs) in hard/quiescent states and low-luminosity active galactic nuclei (LLAGNs). The new sample includes 29 sets of data from 7 BXBs and 20 LLAGNs, with $P_{\rm jet}$ and $L_{\rm jet}$ being derived from spectral modeling of the quasi-simultaneous multi-band spectra under the accretion-jet scenario. Compared to previous works, the range of luminosity is now enlarged to more than $20$ decades, i.e. from $10^{31}{\rm erg/s}$ to $10^{52}{\rm erg/s}$, which allows for better constraining of the correlation. One notable result is that the jets in BXBs and LLAGNs almost follow the same $P_{\rm jet} - L_{\rm jet}$ correlation that was obtained from blazars and gamma-ray bursts (GRBs). The slope indices we derived are $1.03\pm0.01$ for the whole sample, $0.85\pm0.06$ for BXB subsample, $0.71\pm0.11$ for LLAGN subsample, and $1.01\pm0.05$ for the LLAGN-blazar subsample, respectively. The correlation index around unit implies the independence of jet efficiency on the luminosity or kinetic power. Our results may further support the hypothesis that similar physical processes exist in the jets of various black hole systems.
description: 5 pages, 3 figures, to appear in ApJL, updated version
Discussion of "Estimating the historical and future probabilities of large terrorist events" by Aaron Clauset and Ryan Woodard
Creators: name: Schoenberg, Frederic Paik
Publisher: name: arXiv
Year: 2014
Subjects: subject: Applications (stat.AP)
subject: FOS: Computer and information sciences

description: Discussion of "Estimating the historical and future probabilities of large terrorist events" by Aaron Clauset and Ryan Woodard [arXiv:1209.0089].
description: Published in at http://dx.doi.org/10.1214/13-AOAS614E the Annals of Applied Statistics (http://www.imstat.org/aoas/) by the Institute of Mathematical Statistics (http://www.imstat.org)
Social Network Analyses of Information Science Researchers Co-authorship
Publisher: name: Iranian Research Institute for Information Science and Technology (IranDoc)
Year: 2013

description: This research aims to analyze social network structure of co-authorship in scientific outputs of information science researchers as well as to examine relationship between these structures and researchers productivity. Social network analysis is used as the research method. The research population includes all those researchers who have published at least one record in one of the twenty journals of Information Science which has an impact factor of 0.635 as a minimum from the years 1996 to 2010.The results showed that a significant correlation existed between constraint, efficiency, network size and productivity. The results of multivariate variance analysis also indicated that male and female researchers differed in terms of factors such as productivity, network size, constraint and efficiency
Big-bang nucleosynthesis through bound-state effects with a long-lived slepton in the NMSSM
Creators: name: Kohri, Kazunori
name: Koike, Masafumi
name: Konishi, Yasufumi
name: Ohta, Shingo
name: Sato, Joe
name: Shimomura, Takashi
name: Sugai, Kenichi
name: Yamanaka, Masato
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We show that the Li problems can be solved in the next-to-minimal supersymmetric standard model where the slepton as the next-to-lightest SUSY particle is very long-lived. Such a long-lived slepton induces exotic nuclear reactions in big-bang nucleosynthesis, and destroys and produces the $^7$Li and $^6$Li nuclei via bound state formation. We study cases where the lightest SUSY particle is singlino-like neutralino and bino-like neutralino to present allowed regions in the parameter space which is consistent with the observations on the dark matter and the Higgs mass.
description: 23 pages, 36 figures; corrected typos and added report numbers, acknowledgments and references
A Link Network Analysis of Iranian Research Institute Websites: Overt and Covert Relationships
Publisher: name: Iranian Research Institute for Information Science and Technology (IranDoc)
Year: 2013

description: The research investigates the link and networks of Iranian research institute websites using webometrics and the link analysis method. The population includes the websites of 23 research institutes and centers in Iran. The data were collected using the Webometric Analyst software. The network diagram shows the mutual link strength among the set of research institute websites in Iran, and depicts the pattern of internal relationships among these websites. Iranian research institute websites are not in good conditions in link exchange and the cooperation with each other. In addition, the colink diagrams illustrated the covert relationships among Iranian research institutes suggesting that the common topics and contents have been the most important elements of colink creation among Iranian research institute websites. It was found that the websites of Scientific Information Database (SID), Iranian Research Institute for Information Science and Technology (IRANDOC), and National Library and Archives of I.R of Iran (NLAI) were in a better condition than those of other websites as regards the total in-links and out-links. Also, the first to the third ranks were dedicated to IRANDOC, SID, and NLAI websites respectively in in-link numbers and visibility. The analysis of Uniform Resource Locators (URLs) of in-links and out-links of Iranian research institute websites showed that the maximum number of in-link to these websites was reserved for the domains .ir and .com. The websites of Iranian research institutes and centers dedicated most of their out-links to scientific, religious, and fun websites, followed by the ones for universities and the institutes of higher education.
https://jipm.irandoc.ac.ir/article_699241.html
Publisher: name: Iranian Research Institute for Information Science and Technology (IranDoc)
Year: 2013

description: Major concern of users of information systems is information retrieval related their information needs, query used by the users is a manifestation of their information needs. The research purpose is to analyze databases of nanotechnology through the query analysis and follow-up users navigation. The research method is transaction log analysis. This study was performed through the analysis of the interaction between users and the database transaction files. Results show that nanothechnology databases users using three methods to retrieve information needs: search engines, referral sites and directly use. In the used directly Bounce Rate have been lower and more pages have been visited. The average length of query is 3.36. And easier search strategies are used to retrieve information.
https://jipm.irandoc.ac.ir/article_699242.html
Publisher: name: Iranian Research Institute for Information Science and Technology (IranDoc)
Year: 2013

description: The general aim of a bibliometric map is to provide an overview of the structure of the scientific literature in a certain domain or on a certain topic. In the context of science policy and research management, bibliometric maps can be used to support decision making by governments, funding agencies, and universities. The articles have words and references which are the bibliometric data for co-citation analysis and co-word analysis. We try to find that these two bibliometric approaches show any correlation? We applied these approaches to University of Tehran’ productions published between 1999 and 2008, retrieved from the Web of Science. The results reveals 14 co-citation clusters and 6 co-word clusters. The clusters vary considerably in size. Co-word clusters emerged co-citation clusters.
Volumetric Estimation of Cystic Macular Edema in OCT Scans
Creators: name: Author, Unknown
Publisher: name: University of Lincoln
Year: 2023

description: The analysis of retinal Spectral Domain Optical Coherence Tomography (SDOCT) images by trained medical professionals can be used to provide usefulinsights into various diseases. It is the most popular method of retinal imaging due to its non invasive nature and the useful information it providesfor making an accurate diagnosis, however there is a clear lack of publiclyavailable data available to researchers in the domain. In this report, a deeplearning approach for automating the segmentation of cystic macular edema(fluid) in retinal OCT B-Scan images is presented that is consequently usedfor volumetric analysis of OCT scans. This solution is a fast and accuratesemantic segmentation network which makes use of a shortened encoderdecoder UNet-like architecture with an integrated DenseASPP module andAttention Gate for producing an accurate and refined retinal fluid segmentation map. The network is evaluated against both publicly and privatelyavailable datasets; on the former the network achieved a Dice coefficient of0.804, thus making it the current best performing approach on this datasetand on the very small and challenging private dataset, it achieved a score of0.691. Due to the issue presented by a lack of publicly available data in thisdomain, a Graphical User Interface that aims to semi-automate the labellingprocess of OCT images was also created, thus greatly simplifying the processof dataset creation and potentially leading to an increase in labelled dataproduction.
Uncovering many-body correlations in nanoscale nuclear spin baths by central spin decoherence
Creators: name: Ma, Wen-Long
name: Wolfowicz, Gary
name: Zhao, Nan
name: Li, Shu-Shen
name: Morton, John J. L.
name: Liu, Ren-Bao
Publisher: name: arXiv
Year: 2014
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Many-body correlations can yield key insights into the nature of interacting systems; however, detecting them is often very challenging in many-particle physics, especially in nanoscale systems. Here, taking a phosphorus donor electron spin in a natural-abundance 29Si nuclear spin bath as our model system, we discover both theoretically and experimentally that many-body correlations in nanoscale nuclear spin baths produce identifiable signatures in the decoherence of the central spin under multiple-pulse dynamical decoupling control. We find that when the number of decoupling -pulses is odd, central spin decoherence is primarily driven by second-order nuclear spin correlations (pairwise flip-flop processes). In contrast, when the number of -pulses is even, fourth-order nuclear spin correlations (diagonal interaction renormalized pairwise flip-flop processes) are principally responsible for the central spin decoherence. Many-body correlations of different orders can thus be selectively detected by central spin decoherence under different dynamical decoupling controls, providing a useful approach to probing many-body processes in nanoscale nuclear spin baths.
Image Retrieval by Image
Publisher: name: Iranian Research Institute for Information Science and Technology (IranDoc)
Year: 2013

description: Sometimes we have only an image that we should get our information by that. There are many search engines and software's that can search images but all of them don’t have the ability to search for similar images, image search by image. In this paper first, we explained performance, algorithmic search, and retrieval power of 2 powerful search engines (google, TinEye) then we compared retrieval power of them using relevance formula. Then, 2 important software's in discover of similar pictures in databases " Image Comparer" and " Similar Picture Find" In terms of performance, the algorithms used in image retrieval and its power has been investigated and compared them. We used Qualitative Research by Comparative methods. Our investigation showed "google" and " investigated" are more powerful than anothers.
Search for Kinematic Siblings of the Sun Based on Data from the XHIP Catalog
Creators: name: Bobylev, V. V.
name: Bajkova, A. T.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: From the XHIP catalogue, we have selected 1872 F-G-K stars with relative parallax measurement errors <20% and absolute values of their space velocities relative to the Sun <15 km/s. For all these stars, we have constructed their Galactic orbits for 4.5 Gyr into the past using an axisymmetric Galactic potential model with allowance made for the perturbations from the spiral density wave. Parameters of the encounter with the solar orbit have been calculated for each orbit. We have detected three new stars whose Galactic orbits were close to the solar one during a long time interval in the past. These stars are HIP 43852, HIP 104047, and HIP 112158. The spectroscopic binary HIP 112158 is poorly suited for the role of a kinematic sibling of the Sun by its age and spectroscopic characteristics. For the single star HIP 43852 and the multiple system HIP 104047, this role is quite possible. We have also confirmed the status of our previously found candidates for close encounters, HIP 47399 and HIP 87382. The star HIP 87382 with a chemical composition very close to the solar one is currently the most likely candidate, because it persistently shows close encounters with the Sun on time scales of more than 3 Gyr when using various Galactic potential models both without and with allowance made for the influence of the spiral density wave.
description: 11 pages, 1 table, 3 figures
Thermalization and isotropization in heavy-ion collisions
Creators: name: Strickland, Michael
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: I review our current understanding of the processes driving the thermalization and isotropization of the quark gluon plasma (QGP) created in ultrarelativistic heavy ion collisions (URHICs). I begin by discussing the phenomenological evidence in favor of the creation of a thermal but momentum-space anisotropic QGP in URHICs. I then discuss the degree of isotropization using viscous (dissipative) hydrodynamics, weak-coupling approaches to QGP dynamics, and strong-coupling approaches to QGP dynamics. Finally, I report on recent progress in the area of real-time non-abelian gauge field simulations and non-abelian Boltzmann-Vlasov-based hard-loop simulations.
description: 14 pages, 4 figures; Invited review for Pramana
Impacts of sediment on kōaro
Creators: name: Hickford, Mike
name: Melchior, Michele
name: Mayall-Nahi, Melanie
Publisher: name: AgResearch
Year: 2024
Subjects: classificationCode: 41
subject: Environmental sciences

description: This is one of a collection of 11 fact sheets bringing together existing scientific information on the impacts of sediment on freshwater and estuarine fish used for mahinga kai.These fact sheets bring together existing scientific information on these effects, along with expert scientific knowledge, in an easy-to-read format by community groups and land-water managers interested in protecting mahinga kai.The sensitivity of each of 11 species of fish are summarised on a dial from low to high. The assessment is made by considering the influence of sediment on habitat, behaviour, feeding, growth and survival, all in the context of background information such as the life cycle and places where the species are usually found. Scientific references are provided for further detail. Readers might also be interested in the Taonga Species Fact Sheets which provide a broader range of information on selected species.
Upper limits to the magnetic field in central stars of planetary nebulae
Creators: name: Ramos, A. Asensio
name: Gonzalez, M. J. Martinez
name: Sainz, R. Manso
name: Corradi, R. L. M.
name: Leone, F.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: More than about twenty central stars of planetary nebulae (CSPN) have been observed spectropolarimetrically, yet no clear, unambiguous signal of the presence of a magnetic field in these objects has been found. We perform a statistical (Bayesian) analysis of all the available spectropolarimetric observations of CSPN to constrain the magnetic fields on these objects. Assuming that the stellar field is dipolar and that the dipole axis of the objects are oriented randomly (isotropically), we find that the dipole magnetic field strength is smaller than 400 G with 95% probability using all available observations. The analysis introduced allows integration of future observations to further constrain the parameters of the distribution, and it is general, so that it can be easily applied to other classes of magnetic objects. We propose several ways to improve the upper limits found here.
description: 7 pages, 3 figures, accepted for publication in ApJ
A Fractional Calculus on Arbitrary Time Scales: Fractional Differentiation and Fractional Integration
Creators: name: Benkhettou, Nadia
name: da Cruz, Artur M. C. Brito
name: Torres, Delfim F. M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 26A33, 26E70

description: We introduce a general notion of fractional (noninteger) derivative for functions defined on arbitrary time scales. The basic tools for the time-scale fractional calculus (fractional differentiation and fractional integration) are then developed. As particular cases, one obtains the usual time-scale Hilger derivative when the order of differentiation is one, and a local approach to fractional calculus when the time scale is chosen to be the set of real numbers.
description: This is a preprint of a paper whose final and definite form will appear in the international journal Signal Processing, ISSN 0165-1684. Paper submitted 04/Jan/2014; revised 19/Apr/2014; accepted for publication 12/May/2014
title: La relazione con l’altro/a. Contributi della ricerca psicologica
Creators: name: Gainotti , Merete Amann
Publisher: name: Roma Tre-Press
Year: 2006

description: L'obiettivo di questo breve intervento è di mostrare come il tema della relazione con l'altro/a, dal punto di vista psicologico, chiama in causa numerosi orientamenti della ricerca passata ed attuale, che spaziano dalla psicologia individuale alla psicologia dei gruppi, nella consapevolezza che nessuna di queste prospettive può, da sola, esaurire la complessità del problema, ma può contribuire a metterne in luce alcuni aspetti.

description: B@belonline vol. 1 La libertà in discussione
[OI] disk emission in the Taurus star forming region
Creators: name: Aresu, G.
name: Kamp, I.
name: Meijerink, R.
name: Spaans, M.
name: Vicente, S.
name: Podio, L.
name: Woitke, P.
name: Menard, F.
name: Thi, W. -F.
name: Gudel, M.
name: Liebhart, A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: The structure of protoplanetary disks is thought to be linked to the temperature and chemistry of their dust and gas. Whether the disk is flat or flaring depends on the amount of radiation that it absorbs at a given radius, and on the efficiency with which this is converted into thermal energy. The understanding of these heating and cooling processes is crucial to provide a reliable disk structure for the interpretation of dust continuum emission and gas line fluxes. Especially in the upper layers of the disk, where gas and dust are thermally decoupled, the infrared line emission is strictly related to the gas heating/cooling processes. We aim to study the thermal properties of the disk in the oxygen line emission region, and to investigate the relative importance of X-ray (1-120 Angstrom) and far-UV radiation (FUV, 912-2070 Angstrom) for the heating balance there. We use [OI] 63 micron line fluxes observed in a sample of protoplanetary disks of the Taurus/Auriga star forming region and compare it to the model predictions presented in our previous work. The data were obtained with the PACS instrument on board the Herschel Space Observatory as part of the Herschel Open Time Key Program GASPS (GAS in Protoplanetary diskS), published in Howard et al. (2013). Our theoretical grid of disk models can reproduce the [OI] absolute fluxes and predict a correlation between [OI] and the sum Lx+Lfuv. The data show no correlation between the [OI] line flux and the X-ray luminosity, the FUV luminosity or their sum. The data show that the FUV or X-ray radiation has no notable impact on the region where the [OI] line is formed. This is in contrast with what is predicted from our models. Possible explanations are that the disks in Taurus are less flaring than the hydrostatic models predict, and/or that other disk structure aspects that were left unchanged in our models are important. ..abridged..
description: 9 pages, accepted for publication in A&A
Negative time delay of light by a gravitational concave lens
Creators: name: Nakajima, Koki
name: Izumi, Koji
name: Asada, Hideki
Publisher: name: arXiv
Year: 2014
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Gravitational lens models, some of which might act as if a concave lens, have been recently investigated by using a static and spherically symmetric modified spacetime metric that depends on the inverse distance to the $n$-th power [Kitamura, Nakajima and Asada, PRD 87, 027501 (2013)]. We reexamine the time delay of light in a gravitational concave lens as well as a gravitational convex one. The frequency shift due to the time delay is also investigated. We show that the sign of the time delay in the lens models is the same as that of the deflection angle of light. The size of the time delay decreases with increase in the parameter $n$. We discuss also possible parameter ranges that are relevant to pulsar timing measurements in our galaxy.
description: 16 pages, 7 figures. arXiv admin note: text overlap with arXiv:1307.6637
Skyrmions, half-skyrmions and nucleon mass in dense baryonic matter
Creators: name: Ma, Yong-Liang
name: Harada, Masayasu
name: Lee, Hyun Kyu
name: Oh, Yongseok
name: Rho, Mannque
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We explore the hadron properties in dense baryonic matter in a unified way by using a Skyrme model constructed with an effective Lagrangian which includes the $ρ$ and $ω$ vector mesons as hidden gauge bosons and is valid up to $O(p^4)$ in chiral expansion including the homogeneous Wess-Zumino terms. With the two input values of pion decay constant and the lowest lying vector meson mass which can be fixed in free space, all the other low energy constants in the effective Lagrangian are determined by their master formulas derived from holographic QCD models, which allows us to study the baryonic matter properties with no additional free parameters and thus without ambiguities. We find that the $ω$ field that figures in the homogeneous Wess-Zumino term plays a crucial role in the skyrmion structure and its matter properties. The most striking and intriguing observation is that the pion decay constant that smoothly drops with increasing density in the Skyrmion phase stops decreasing at $n_{1/2}^{}$ at which the skyrmions in medium fractionize into half-skyrmions and remains nearly constant in the half-skyrmion phase. In accordance with the large $N_c$ consideration, the baryon mass also stays non-scaling in the half-skyrmion phase. This feature is supported by the nuclear effective field theory with the parameters of the Lagrangian scaling modified at the skyrmion--half-skyrmion phase transition. Our exploration also uncovers the crucial role of the $ω$ meson in multi-baryon systems as well as in the structure of a single skyrmion.
description: Contribution to the Workshop on Hadron Nuclear Physics (HNP2013), 18-22 Jul. 2013, Zhangjiajie, China
Service Users’ Experiences of Endings from NHS Community Personality Disorder Services
Creators: name: Author, Unknown
Publisher: name: University of Lincoln
Year: 2023

description: Background: Endings are considered an important part of the therapy process,however, the empirical literature on the topic is sparse, and clinical guidelinessupporting practice are limited. In particular, there is a lack of evidence derived fromservice users’ subjective experiences that warrants further exploration.Aim: The key aim of this research was to explore service users’ experiences ofendings from NHS community Personality Disorder services.Method: Semi-structured telephone interviews were conducted with eightindividuals discharged within a three-month period from one of four NHS communityPD services. Interview transcripts were analysed using a deductive-inductive approachusing an adapted version of Braun and Clarke’s method of thematic analysis (2006). Anadditional ‘refutational’ stage was incorporated into the steps of analysis to ensurecontrasting data was considered.Results: During the analysis, it became apparent that there were two distinctover-arching themes: service users’ experiences of the process of ending and theirclinical reactions and responses to the ending. It was therefore decided that two journalpapers would be written, each focussing on their respective parts. Three main themesrelevant to the process of ending were reported in paper one; ‘Service users’experiences in the context of Reflective versus Reactive practice’, ‘Endings held inmind’ and ‘What next?’ A further three themes emerged in relation to service usersclinical experiences of endings, ‘Loss’, ‘Responses to loss’ and ‘Boundaries’; these arediscussed in paper two.Conclusions: In summary, service users experiences highlight the importance oftaking a reflective approach to the management of endings: in particular, explicitlyacknowledging the ending from the start, mentioning it throughout and ‘marking’ theending of therapy were considered key features of service users’ experiences. Thefindings also highlighted service users’ readiness to end therapy as a potential area ofintervention.The findings from the second paper emulate previous literature suggesting thatendings are experienced as a loss and that endings evoke a dynamic range of emotionalresponses. Boundaries were also highlighted as having an important role in determininghow service users’ experience the loss of endings. Clinical recommendations areprovided within each paper on how health professionals and services may manageendings within clinical practice. Suggestions for future research are also discussed.
Ionospheric Disturbances and their Impact on IPS Using MEXART Observations
Creators: name: Rodríguez-Martínez, Mario
name: Pérez-Enríquez, H. Román
name: Carrillo-Vargas, Armando
name: López-Montes, Rebeca
name: Araujo-Pradere, Eduardo A.
name: Casillas-Pérez, Gilberto A.
name: Cruz-Abeyro, José A. L.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Space Physics (physics.space-ph)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We study the impact of ionospheric disturbances on the Earth's environment caused by the solar events that occurred from 20 April to 31 May 2010, using observations from the Mexican Array Radio Telescope (MEXART). During this period of time, several astronomical sources presented fluctuations in their radio signals. Wavelet analysis, together with complementary information such as the vertical total electron content (vTEC) and the Dst index, were used to identify and understand when the interplanetary scintillation (IPS) could be contaminated by ionospheric disturbances (IOND). We find that radio signal perturbations were sometimes associated with IOND and/or IPS fluctuations; however, in some cases, it was not possible to clearly identify their origin. Our Fourier and wavelet analyses showed that these fluctuations had frequencies in the range $\approx$ 0.01 Hz -- $\approx$ 1.0 Hz (periodicities of 100 s to 1 s).
description: 20 pages, 10 figures. Accepted for publication in Solar Physics, Springer
Temporal Variations of Coriolis-turns in the Photosphere
Creators: name: Muraközy, J.
name: Ludmány, A.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Correlations have been studied between longitudinal and latitudinal shifts of sunspot groups in the period 1986-1998. This study is based on the Debrecen Photoheliographic Data (DPD). The latitudinal distribution of the correlation values exhibits the expected Coriolis-pattern on the entire period: negative/positive correlations in the northern/southern hemispheres, gradually disappearing toward the equator. The yearly distributions, however, show an interesting cycle dependence: after the unambiguous Coriolis patterns during the growing phase of the cycle the latitudinal dependence of the correlations gets ambiguous at the activity maximum. This may be related to the Gnevyshev gap, the depression of the cycle time-profile at the maximum.
description: 7 pages, 3 figures
Destruction of Anderson localization by nonlinearity in kicked rotator at different effective dimensions
Creators: name: Ermann, Leonardo
name: Shepelyansky, Dima L.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We study numerically the frequency modulated kicked nonlinear rotator with effective dimension $d=1,2,3,4$. We follow the time evolution of the model up to $10^9$ kicks and determine the exponent $α$ of subdiffusive spreading which changes from $0.35$ to $0.5$ when the dimension changes from $d=1$ to $4$. All results are obtained in a regime of relatively strong Anderson localization well below the Anderson transition point existing for $d=3,4$. We explain that this variation of the exponent is different from the usual $d-$dimensional Anderson models with local nonlinearity where $α$ drops with increasing $d$. We also argue that the renormalization arguments proposed by Cherroret N et al. arXiv:1401.1038 are not valid.
description: 8 pages, 3 figures
Optimal preselection and postselection in weak measurements for observing photonic spin Hall effect
Creators: name: Zhou, Xinxing
name: Li, Xing
name: Luo, Hailu
name: Wen, Shuangchun
Publisher: name: arXiv
Year: 2014
Subjects: subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Photonic spin Hall effect (SHE) holds great potential applications in precision metrology. How to obtain a high measurement precision is an important issue to detect the photonic SHE. In this letter, we propose using optimal preselection and postselection in weak measurements to enhance the measurement precision. We find that the maximum weak value and pointer shift can be obtained with an optimal overlap of preselection and postselection states. These findings offer the possibility for improving the precision of weak measurements and thereby have possible applications for accurately characterizing the parameters of nanostructures.
description: 4 pages, 4 figures
Generalized Parton Distributions: visions, basics, and realities
Creators: name: Müller, Dieter
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: An introductory to generalized parton distributions is given which emphasizes their spectral property and its uses as well as the equivalence of various GPD representations. Furthermore, the status of the theory and phenomenology of hard exclusive processes is shortly reviewed.
description: 22 pages, 5 figures
Optimizing the Cost for Resource Subscription Policy in IaaS Cloud
Creators: name: Banu, M. Uthaya
name: Saravanan, K.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: FOS: Computer and information sciences

description: Cloud computing allow the users to efficiently and dynamically provision computing resource to meet their IT needs. Cloud Provider offers two subscription plan to the customer namely reservation and on-demand. The reservation plan is typically cheaper than on-demand plan. If the actual computing demand is known in advance reserving the resource would be straightforward. The challenge is how to make properly resource provisioning and how the customers efficiently purchase the provisioning options under reservation and on-demand. To address this issue, two-phase algorithm are proposed to minimize service provision cost in both reservation and on-demand plan. To reserve the correct and optimal amount of resources during reservation, proposed a mathematical formulae in the first phase. To predict resource demand, use kalman filter in the second phase. The evaluation result shows that the two-phase algorithm can significantly reduce the provision cost and the prediction is of reasonable accuracy.
description: 6 pages,8 figures,"Published with International Journal of Engineering Trends and Technology (IJETT)". M.Uthaya Banu, K.Saravanan. Article:Optimizing the Cost for Resource Subscription Policy in IaaS Cloud
title: Comunicazione e immagine
Creators: name: Iannotta , Daniella
Publisher: name: Roma Tre-Press
Year: 2006

description: È possibile comunicare per immagini? Doppia problematica, che considera la complessità della comunicazione e, a un tempo, le possibilità e gli esiti del comunicare per immagini, nel caso specifico immagini filmiche. Nel contributo si cerca di capire che cosa renda possibile il fenomeno della comunicazione, che un ambito di "scienze" della comunicazione rischia di dimenticare, dandolo per implicito.

description: B@belonline vol. 1 La libertà in discussione
The Pairing of Spin-orbit Coupled Fermi Gas in Optical Lattice
Creators: name: Tang, Ho-Kin
name: Yang, Xiaosen
name: Sun, Jinhua
name: Lin, Hai-Qing
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We investigate Rashba spin-orbit coupled Fermi gases in square optical lattice by using the determinant quantum Monte Carlo (DQMC) simulations which is free of the sign-problem. We show that the Berezinskii-Kosterlitz-Thoules phase transition temperature is firstly enhanced and then suppressed by spin-orbit coupling in the strong attraction region. In the intermediate attraction region, spin-orbit coupling always suppresses the transition temperature. We also show that the spin susceptibility becomes anisotropic and retains finite values at zero temperature.
description: 10 pages, 9 figures
A numerical investigation of level sets of extremal Sobolev functions
Creators: name: Juhnke, Stefan
name: Ratzkin, Jesse
Publisher: name: arXiv
Year: 2014
Subjects: subject: Numerical Analysis (math.NA)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: In this paper we investigate the level sets of extremal Sobolev functions for subcritical exponents p. We conjecture that as p increases the corresponding extremal functions become more peaked, which we can measure by comparing their distribution functions. Then we provide compelling numerical evidence for our conjecture.
description: 15 pages, 9 figures, submitted
Unfolding the Laws of Star Formation: The Density Distribution of Molecular Clouds
Creators: name: Kainulainen, Jouni
name: Federrath, Christoph
name: Henning, Thomas
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The formation of stars shapes the structure and evolution of entire galaxies. The rate and efficiency of this process are affected substantially by the density structure of the individual molecular clouds in which stars form. The most fundamental measure of this structure is the probability density function of volume densities (rho-PDF), which determines the star formation rates predicted with analytical models. This function has remained unconstrained by observations. We have developed an approach to quantify rho-PDFs and establish their relation to star formation. The rho-PDFs instigate a density threshold of star formation and allow us to quantify the star formation efficiency above it. The rho-PDFs provide new constraints for star formation theories and correctly predict several key properties of the star-forming interstellar medium.
description: Science (2014) vol. 345. 34 pages
Acceleration of Type 2 Spicules in the Solar Chromosphere - 2: Viscous Braking and Upper Bounds on Coronal Energy Input
Creators: name: Goodman, Michael L.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: A magnetohydrodynamic model is used to determine conditions under which the Lorentz force accelerates plasma to type 2 spicule speeds in the chromosphere. The model generalizes a previous model to include a more realistic pre-spicule state, and the vertical viscous force. Two cases of acceleration under upper chromospheric conditions are considered. The magnetic field strength for these cases is <= 12.5 and 25 G. Plasma is accelerated to terminal vertical speeds of 66 and 78 km/s in 100 s, compared with 124 and 397 km/s for the case of zero viscosity. The flows are localized within horizontal diameters ~ 80 and 50 km. The total thermal energy generated by viscous dissipation is ~ 10 times larger than that due to Joule dissipation, but the magnitude of the total cooling due to rarefaction is >~ this energy. Compressive heating dominates during the early phase of acceleration. The maximum energy injected into the corona by type 2 spicules, defined as the energy flux in the upper chromosphere, may largely balance total coronal energy losses in quiet regions, possibly also in coronal holes, but not in active regions. It is proposed that magnetic flux emergence in inter-granular regions drives type 2 spicules.
description: 20 pages, 3 figures. Accepted for publication in The Astrophysical Journal
Выбор типа электрогенератора для ветроэнергетических установок
Creators: name: Владимировна, Шевченко Валентина
Publisher: name: Zenodo
Year: 2004
Subjects: ветрогенераторы
электрические машины

description: Опубликовано: [Шевченко В.В. Выбор типа электрогенератора для ветроэнергетических установок // Материалы 4-й международной научно-технической конференции "Проблемы информатики и моделирования", 25-27.11.2004 г., сообщение №13. - Украина, Харьков: НТУ "ХПИ", 2004. - С. 58. https://doi.org/10.5281/zenodo.2526357]

Помимо традиционных для ветроэнергетических установок предложено использовать униполярные генераторы с дисковыми роторами и постоянными магнитами.

Ключевые слова: ветрогенераторы, электрические машины.

Репозиторий НТУ "ХПИ" - скачать pdf
Identification and Analysis of Conceptual Structure of Persian Subject Headings in Comparison with the Library of Congress Classification System and Academic System of Iran
Publisher: name: Iranian Research Institute for Information Science and Technology (IranDoc)
Year: 2013

description: This paper aims to discover the conceptual system of Persian Subject Headings (PSH) through the content analysis method. In order to discover the PSH's global hierarchical structure (GHS), all PSH records (84545 records) were investigated. Conceptual system of PSH was compared to the both Academic system of Iran and Library of Congress Classification system (LCC). Findings show strong relationships between PSH and LCC in Science (%19.5), Technology (%14.4), Social Sciences (%10.6) Medicine (%9.5) and Philosophy and Psychology (%6.6) classes. Identifying the hierarchical structures (tree structures) embedded in the entire PSH, 241 trees were found. Large trees and top headings (e.g. Medicine and Psychology, Sociology, Philosophy, Contracts, Founding, Mathematics, Management, law and …) were selected as the representation of the conceptual system of PSH to compare with the two other conceptual systems in this study. It shows that only %21.05 of top headings match the academic system of Iran and it is narrower than it. It means that a limited part of the academic system has been represented in PSH. The matching rate of top headings with the LCC is %71.05. In conclusion, the conceptual system of PSH is narrower than it is expected. It is recommended to correct the errors and enrich both its relational structure and conceptual system