cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Open clusters and the galactic disk
Creators: name: Roeser, Siegfried
name: Kharchenko, Nina V.
name: Piskunov, Anatoly E.
name: Schilbach, Elena
name: Scholz, Ralf-Dieter
name: Zinnecker, Hans
Publisher: name: arXiv
Year: 2010
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: It is textbook knowledge that open clusters are conspicuous members of the thin disk of our Galaxy, but their role as contributors to the stellar population of the disk was regarded as minor. Starting from a homogenous stellar sky survey, the ASCC-2.5, we revisited the population of open clusters in the solar neighbourhood from scratch. In the course of this enterprise we detected 130 formerly unknown open clusters, constructed volume- and magnitude-limited samples of clusters, re-determined distances, motions, sizes, ages, luminosities and masses of 650 open clusters. We derived the present-day luminosity and mass functions of open clusters (not the stellar mass function in open clusters), the cluster initial mass function CIMF and the formation rate of open clusters. We find that open clusters contributed around 40 percent to the stellar content of the disk during the history of our Galaxy. Hence, open clusters are important building blocks of the Galactic disk.
description: 7 pages, 7 figures
DeWitt-Virasoro construction
Creators: name: Mukhopadhyay, Partha
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study a particular approach for analyzing worldsheet conformal invariance for bosonic string propagating in a curved background using hamiltonian formalism. We work in the Schrodinger picture of a single particle description of the problem where the particle moves in an infinite-dimensional space. Background independence is maintained in this approach by adopting DeWitt's (Phys.Rev.85:653-661,1952) coordinate independent formulation of quantum mechanics. This enables us to construct certain background independent notion of Virasoro generators, called DeWitt-Virasoro (DWV) generators, and invariant matrix elements of an arbitrary operator constructed out of them in spin-zero representation. We show that the DWV algebra is given by the Witt algebra with additional anomalous terms that vanish for Ricci-flat backgrounds. The actual quantum Virasoro generators should be obtained by first introducing the vacuum state and then normal ordering the DWV generators with respect to that. We demonstrate the procedure in the simple cases of flat and pp-wave backgrounds. This is a shorter version of arXiv:0912.3987 [hep-th] with many technical derivations omitted.
description: 18 pages, shorter version of arXiv:0912.3987 [hep-th] accepted for publication in Pramana - Journal of Physics
Another mean field treatment in the strong coupling limit of lattice QCD
Creators: name: Ohnishi, Akira
name: Miura, Kohtaroh
name: Nakano, Takashi Z.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We discuss the QCD phase diagram in the strong coupling limit of lattice QCD by using a new type of mean field coming from the next-to-leading order of the large dimensional expansion. The QCD phase diagram in the strong coupling limit recently obtained by using the monomer-dimer-polymer (MDP) algorithm has some differences in the phase boundary shape from that in the mean field results. As one of the origin to explain the difference, we consider another type of auxiliary field, which corresponds to the point-splitting mesonic composite. Fermion determinant with this mean field under the anti-periodic boundary condition gives rise to a term which interpolates the effective potentials in the previously proposed zero and finite temperature mean field treatments. While the shift of the transition temperature at zero chemical potential is in the desirable direction and the phase boundary shape is improved, we find that the effects are too large to be compatible with the MDP simulation results.
description: Talk given at 28th International Symposium on Lattice Field Theory (Lattice 2010), Villasimius, Sardinia, Italy, 14-19 June, 2010
Interpersonal guilt, impostor phenomenon, depression, and anxiety
Creators: name: Fimiani, Ramona
name: Leonardi, Jessica
name: Gorman, Bernard
name: Gazzillo, Francesco
Publisher: name: Psychology Hub
Year: 2021

description: Impostor phenomenon (Clance, 1985) refers to the psychological experience of individuals who perceive themselves as intellectual frauds and fear of being exposed as impostors. Previous studies suggest that the fear of failure, the fear of success, and low self-esteem are preconditions that foster the occurrence of impostor feelings (e.g., Neureiter & Traut-Mattausch, 2016). The aim of this study was to investigate the relationship between the impostor phenomenon and interpersonal guilt as conceived in Control-Mastery Theory (Faccini et al., 2020), and their association with anxiety and depression. Methods. 343 subjects completed the Interpersonal Guilt Rating Scale-15s (IGRS-15s; Faccini et al, 2020), the Clance Impostor Phenomenon Scale (CIPS; Clance, 1985), the State-Trait Anxiety Inventory (STAI; Spielberger et al., 1983), and the Beck Depression Inventory II (BDI II; Beck et al., 1996). Results. As expected, impostor phenomenon was significantly associated with self-hate, survivor guilt and omnipotence guilt. The hypothesis that these kinds of guilt and the impostor phenomenon can contribute to anxiety and depression has also been confirmed. Conclusions. This study suggests that people who experience impostor fears struggle with maladaptive feelings of guilt related to pathogenic beliefs about oneself and significant others, favoring depression and anxiety. Therefore, working on these aspects can be essential in treating these patients.
description: Psychology Hub, Vol. 38 No. 2 (2021)
Stability of the Parisi Solution for the Sherrington-Kirkpatrick model near T=0
Creators: name: Crisanti, A.
name: De Dominicis, C.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: To test the stability of the Parisi solution near T=0, we study the spectrum of the Hessian of the Sherrington-Kirkpatrick model near T=0, whose eigenvalues are the masses of the bare propagators in the expansion around the mean-field solution. In the limit $T\ll 1$ two regions can be identified. In the first region, for $x$ close to 0, where $x$ is the Parisi replica symmetry breaking scheme parameter, the spectrum of the Hessian is not trivial and maintains the structure of the full replica symmetry breaking state found at higher temperatures. In the second region $T\ll x \leq 1$ as $T\to 0$, the components of the Hessian become insensitive to changes of the overlaps and the bands typical of the full replica symmetry breaking state collapse. In this region only two eigenvalues are found: a null one and a positive one, ensuring stability for $T\ll 1$. In the limit $T\to 0$ the width of the first region shrinks to zero and only the positive and null eigenvalues survive. As byproduct we enlighten the close analogy between the static Parisi replica symmetry breaking scheme and the multiple time-scales approach of dynamics, and compute the static susceptibility showing that it equals the static limit of the dynamic susceptibility computed via the modified fluctuation dissipation theorem.
description: 24 pages, 6 figures, J. Phys. A (in press)
Deep GALEX Observations of the Coma Cluster: Source Catalog and Galaxy Counts
Creators: name: Hammer, Derek
name: Hornschemeier, Ann
name: Mobasher, Bahram
name: Miller, Neal
name: Smith, Russell
name: Arnouts, Stephane
name: Milliard, Bruno
name: Jenkins, Leigh
Publisher: name: arXiv
Year: 2010
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a source catalog from deep 26 ks GALEX observations of the Coma cluster in the far-UV (FUV; 1530 A) and near-UV (NUV; 2310 A) wavebands. The observed field is centered 0.9 deg (1.6 Mpc) south-west of the Coma core, and has full optical photometric coverage with SDSS. The catalog consists of 9700 galaxies with GALEX and SDSS photometry, including 242 spectroscopically-confirmed Coma member galaxies that range from giant spirals and elliptical galaxies to dwarf irregular and early-type galaxies. The full multi-wavelength catalog (cluster plus background galaxies) is ~80% complete to NUV=23 and FUV=23.5, and has a limiting depth at NUV=24.5 and FUV=25.0 which corresponds to a star formation rate of ~0.001 Msun/yr at the distance of Coma. Our deep GALEX observations required a two-fold approach to generating a source catalog: we used a Bayesian deblending algorithm to measure faint and compact sources (using SDSS coordinates as a position prior), and relied on the GALEX pipeline catalog for bright/extended objects. We performed simulations to assess the influence that systematic effects (e.g. object blends, source confusion, Eddington Bias) have on source detection and photometry when using both methods. The Bayesian deblending method roughly doubles the number of source detections and provides reliable photometry to a few magnitudes deeper than the GALEX pipeline catalog. This method is also free from source confusion over the UV magnitude range studied here; conversely, we estimate that the GALEX pipeline catalogs are confusion limited at magnitudes fainter than NUV~23 and FUV~24. We have measured the total UV galaxy counts using our catalog and report a ~50% excess of counts across FUV=22-23.5 and NUV=21.5-23 relative to previous GALEX measurements, which is not attributed to cluster member galaxies. Our galaxy counts are a better match to deeper UV counts measured with HST.
description: 27 pages, 13 figures, 4 tables, accepted for publication in ApJS
Additional file 1 of An integrated omics analysis reveals the gene expression profiles of maize, castor bean, and rapeseed for seed oil biosynthesis
Creators: name: Liu, Nian
name: Liu, Jing
name: Fan, Shihang
name: Liu, Hongfang
name: Zhou, Xue-Rong
name: Hua, Wei
name: Zheng, Ming
Publisher: name: figshare
Year: 2022
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Plant Biology

description: Additional file 1: Fig. S1. The comparison of the regulated ratio of every homologous gene in the three species. R, rapeseed; C, castor bean; M, maize. Fig. S2. Gene expression patterns of all DEGs during seed development of rapeseed, castor, and maize. Fig. S3. Numbers of differentially expressed genes that participated in FA biosynthesis (a) and oil body formation (b) of rapeseed, castor bean, and maize during seed development. Fig. S4. The fold changes of key homologous lipid-related genes: FUS3, WRI1, LEC1/2, PDHC, GPDHC, DGAT. Fig. S5. Numbers of differential expressed genes that participated in sugar transporters (ST), plastid transporters (PT), organic acid and TCA (OA and TCA), and other carbohydrate metabolism (OCA) of rapeseed, castor bean, and maize during seed development.
title: Remarks Prepared for Delivery by Secretary of Transportation Elizabeth Hanford Dole, North Carolina Bankers Association
Creators: name: Dole, Elizabeth Hanford
name: United States Department of Transportation
Publisher: name: United States Department of Transportation
publisherIdentifier: https://ror.org/02xfw2e90
publisherIdentifierScheme: ROR
Year: 1987
Subjects: classificationCode: https://trt.trb.org/term/90595
subject: Transportation safety
classificationCode: https://trt.trb.org/term/89768
subject: Transportation planning
classificationCode: https://trt.trb.org/term/88891
subject: Transportation policy

description: See the Secretary of Transportation Speeches Collection's finding aid at: https://ntl.as.atlas-sys.com/repositories/2/resources/4
description: Remarks prepared for delivery by Secretary of Transportation Elizabeth Hanford Dole for the North Carolina Bankers Association in Pinehurst, North Carolina on May 8, 1987.
Nuova passerella ciclopedonale sul fiume Cassarate, Lugano
Creators: name: Guggiari, Simone
Publisher: name: Scuola Universitaria della Svizzera Italiana (SUPSI)
Year: 2023

description: L’obiettivo dell’intervento concerne il miglioramento della mobilità lenta rendendo gli attraversamenti sui corsi d’acqua consoni a tratte ciclopedonali, garantendo un adeguato inserimento territoriale e rispettando esigenze di cura formale e strutturale. La committenza lascia libera scelta sul collocamento dei nuovi attraversamenti. Visto l’intervento sul fiume Cassarate, viene eseguita una rinaturazione delle sponde per facilitare l’accessibilità alle utenze.
Effects of the Coronavirus pandemic on mental health: a possible model of the direct and indirect impact of the pandemic on PTSD symptomatology COVID-19 related
Creators: name: Tambelli, Renata
name: Forte, Giuseppe
name: Favieri, Francesca
name: Casagrande, Maria
Publisher: name: Psychology Hub
Year: 2021

description: The COVID-19 pandemic had a severe impact on the worldwide population in the last year, affecting psychological well-being. Several studies defined that COVID-19 diagnosis, the fear of contagion, and the infection in loved ones directly affected psychological distress and PTSD symptomatology. However, no study underlined the mediation role of psychological aspects in this relation. This study aimed to assess the direct and indirect consequences of some common aspects of the COVID-19 spread on PTSD symptomatology due to the pandemic. According to this aim, we adopted a mediation analysis involving anxiety, depression, sleep disturbance, general psychological well-being, and psychopathological symptomatology. Two thousand two hundred and nineteen-one respondents completed an online survey focused on the experience with the COVID-19 pandemic. Different questionnaires assessing sleep quality, anxiety, depression, psychological well-being, and general psychopathology were administered. COVID-19-PTSD was evaluated. A mediation analysis was conducted to estimate the possible direct and indirect effects of the considered variables COVID-19 related to PTSD symptoms. Statistical analysis evidenced a direct effect of the dimension ascribable to the pandemic (COVID-19 diagnosis, the fear of the contagion, and the diagnosis of COVID-19 in loved ones). Moreover, a total indirect effect of COVID-19 diagnosis and fear of contagion emerged. In particular, the fear of contagion was significantly mediated by psychological well-being, sleep disturbance, psychopathological symptomatology, and anxiety. Furthermore, the COVID-19 diagnosis was significantly mediated by general psychological well-being and psychopathological symptomatology. Although no significant general indirect effect of sleep quality was highlighted, sleep disturbance was reported as a possible mediator of the relationship between the diagnosis of COVID-19 in loved ones and PTSD symptomatology. This study confirmed the possible mediating role of some psychological aspects in the relationship between some aspects directly associated with the diffusion of the COVID-19 pandemic and the PTSD symptomatology, specifically referred to COVID-19 as a traumatic event. These findings should be adopted as a starting point for further studies aimed to develop psychological interventions to minimize the long-term consequences of the COVID-19 pandemic.
description: Psychology Hub, Vol. 38 No. 2 (2021)
Additional file 1 of Molecular subtyping based on TRP family and prognostic assessment for TRP-associated lncRNAs in pancreatic adenocarcinoma
Creators: name: Li, Lincheng
name: Xiao, Zhaohui
name: He, Pengyi
name: Zou, Wenbo
name: Deng, Zhaoda
name: Zhang, Gong
name: Liu, Rong
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Genetics
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Mathematical Sciences not elsewhere classified
subject: Cancer

description: Additional file 1.
Temperature dependence of contact resistance of Au-Ti-Pd2Si-n+-Si ohmic contacts
Creators: name: Belyaev, A. E.
name: Boltovets, N. S.
name: Konakova, R. V.
name: Kudryk, Ya. Ya.
name: Sachenko, A. V.
name: Sheremet, V. N.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We investigated temperature dependence of contact resistance of an Au-Ti-Pd2Si ohmic contact to heavily doped n+-Si. The contact resistance increases with temperature owing to conduction through the metal shunts. In this case, the limiting process is diffusion input of electrons to the metal shunts. The proposed mechanism of contact resistance formation seems to realize also in the case of wide-gap semiconductors with high concentration of surface states and dislocation density in the contact.
Quasar Mass Functions Across Cosmic Time
Creators: name: Vestergaard, M.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: I present mass functions of actively accreting black holes detected in different quasar surveys which in concert cover a wide range of cosmic history. I briefly address what we learn from these mass functions. I summarize the motivation for such a study and the methods by which we determine black hole masses.
description: 9 pages, 6 figures, invited contribution to the 2009 IAU Symposium 267. This version has added arXiv info for a reference paper in press and comments on preliminary data presented in Figure 3 relative to the published contribution
Temperament profiles to differentiate between stress-resilient and stress-affected children during Covid-19 pandemic
Creators: name: Scaini, Simona
name: Caputi, Marcella
name: Giani, Ludovica
name: Forresi, Barbara
Publisher: name: Psychology Hub
Year: 2022

description: Covid-19 pandemic has posed unprecedented challenges to individual resilience, especially among children who are the most affected by its psychological consequences. We aim to investigate temperament profiles that might constitute a potential risk factor for the development of psychopathology and low levels of resilience in children experiencing Covid-19 quarantine. The sample included 158 Italian children aged 5 to 10 years (48% boys, M = 7.4, SD = 1.8) recruited through a snowball sampling from the general population. Temperament, psychopathological symptoms, and resilience were assessed with the Junior Temperament and Character Inventory, the Strengths and Difficulties Questionnaire, and the Child and Youth Resilience Measure. Profile Analysis was employed to outline temperament differences between stress-resilient and stress-affected children. Results evidenced that resilient children displayed high levels of persistence and reward dependence, and low levels of novelty seeking. Behavioral difficulties were associated with low levels of persistence and reward dependence, and high levels of novelty seeking. Internalizing symptoms were more likely among children with high harm avoidance and low persistence. These findings underscore the importance of examining different temperament dimensions and their associations, especially when profiling phenotypes in trying to identify the links among temperament, vulnerability to psychopathology and resilience during stressful periods.
description: Psychology Hub, Vol. 38 No. 3 (2021)
Anomalous magnetic transport in ferromagnetic graphene junctions
Creators: name: Yokoyama, Takehito
name: Linder, Jacob
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We investigate magnetotransport in a ferromagnetic/normal/ferromagnetic graphene junction where a gate electrode is attached to the normal segment. It is shown that the charge conductance can be maximal at an antiparallel configuration of the magnetizations. Moreover, we demonstrate that both the magnitude and the sign of the spin-transfer torque can be controlled by means of the gate voltage in the normal segment. In this way, the present system constitutes a spin-transfer torque transistor. These anomalous phenomena are attributed to the combined effect of the exchange field and the Dirac dispersion of graphene. Our prediction opens up the possibility of moving domain walls parallel or antiparallel to the current in a controllable fashion by means of a local gate voltage.
description: 4 pages, 4 figures
Small molecule inhibitor of Igf2bp1 represses Kras and a pro-oncogenic phenotype in cancer cells
Creators: name: Wallis, Nadav
name: Oberman, Froma
name: Shurrush, Khriesto
name: Germain, Nicolas
name: Greenwald, Gila
name: Gershon, Tehila
name: Pearl, Talia
name: Abis, Giancarlo
name: Singh, Vikash
name: Singh, Amandeep
name: Sharma, Arun K.
name: Barr, Haim M.
name: Ramos, Andres
name: Spiegelman, Vladimir S.
name: Yisraeli, Joel K.
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biophysics
subject: Biochemistry
subject: Cell Biology
subject: Molecular Biology
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Developmental Biology
subject: Cancer
subject: Hematology

description: Igf2bp1 is an oncofetal RNA binding protein whose expression in numerous types of cancers is associated with upregulation of key pro-oncogenic RNAs, poor prognosis, and reduced survival. Importantly, Igf2bp1 synergizes with mutations in Kras to enhance signalling and oncogenic activity, suggesting that molecules inhibiting Igf2bp1 could have therapeutic potential. Here, we isolate a small molecule that interacts with a hydrophobic surface at the boundary of Igf2bp1 KH3 and KH4 domains, and inhibits binding to Kras RNA. In cells, the compound reduces the level of Kras and other Igf2bp1 mRNA targets, lowers Kras protein, and inhibits downstream signalling, wound healing, and growth in soft agar, all in the absence of any toxicity. This work presents an avenue for improving the prognosis of Igf2bp1-expressing tumours in lung, and potentially other, cancer(s).
title: Remarks Prepared for Delivery by Secretary of Transportation Elizabeth Hanford Dole, International Women in Leadership Conference
Creators: name: Dole, Elizabeth Hanford
name: United States Department of Transportation
Publisher: name: United States Department of Transportation
publisherIdentifier: https://ror.org/02xfw2e90
publisherIdentifierScheme: ROR
Year: 1987
Subjects: classificationCode: https://trt.trb.org/term/90595
subject: Transportation safety
classificationCode: https://trt.trb.org/term/89768
subject: Transportation planning
classificationCode: https://trt.trb.org/term/88891
subject: Transportation policy

description: See the Secretary of Transportation Speeches Collection's finding aid at: https://ntl.as.atlas-sys.com/repositories/2/resources/4
description: Remarks prepared for delivery by Secretary of Transportation Elizabeth Hanford Dole for the International Women in Leadership Conference on May 8, 1987 in Arlington, Virginia.
Additional file 1 of A novel survival model based on a Ferroptosis-related gene signature for predicting overall survival in bladder cancer
Creators: name: Liang, Yingchun
name: Ye, Fangdie
name: Xu, Chenyang
name: Zou, Lujia
name: Hu, Yun
name: Hu, Jimeng
name: Jiang, Haowen
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Cancer

description: Additional file 1: Supplementary Table S1. Sixty ferroptosis-related genes.
title: Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° ÑÐ¸ÑÑÐµÐ¼Ñ ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ Ð´Ð²Ð¸Ð¶ÐµÐ½Ð¸ÐµÐ¼ ÑÐ°Ð±Ð¾ÑÐµÐ³Ð¾ Ð¸Ð½ÑÑÑÑÐ¼ÐµÐ½ÑÐ° Ð¼Ð°Ð½Ð¸Ð¿ÑÐ»ÑÑÐ¾ÑÐ° UR5 Ð¿Ð¾ Ð£ÐÐ Ð´Ð°Ð½Ð½ÑÐ¼
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Development of a system to control the movement of the tool manipulator UR5 on ULTRASOUND data
Creators: name: ÐÐµÐ»Ð¾Ð·ÐµÑÑÐµÐ²Ð°, ÐÐ½Ð°ÑÑÐ°ÑÐ¸Ñ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2019
Subjects: Ð¼Ð°Ð½Ð¸Ð¿ÑÐ»ÑÑÐ¾Ñ
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ÑÐ·Ð¸ Ð½Ð°Ð²Ð¸Ð³Ð°ÑÐ¸Ñ
ÑÐ¸ÑÑÐµÐ¼Ð° ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ
manipulator
dynamic model manipulator
brahiterapy
us navigation
control system

description: Ð Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÐµ ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½Ð° Ð¼Ð°ÑÐµÐ¼Ð°ÑÐ¸ÑÐµÑÐºÐ°Ñ Ð¼Ð¾Ð´ÐµÐ»Ñ Ð¼Ð°Ð½Ð¸Ð¿ÑÐ»ÑÑÐ¾ÑÐ° Ð´Ð»Ñ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ Ð´Ð¸Ð½Ð°Ð¼Ð¸ÑÐµÑÐºÐ¸Ñ ÑÐ²Ð¾Ð¹ÑÑÐ², Ð° ÑÐ°ÐºÐ¶Ðµ Ð´Ð»Ñ Ð²Ð¾Ð·Ð¼Ð¾Ð¶Ð½Ð¾ÑÑÐ¸ ÑÐ°Ð±Ð¾ÑÑ Ñ Ð´Ð°Ð½Ð½Ð¾Ð¹ Ð¼Ð¾Ð´ÐµÐ»ÑÑ Ð² Ð²Ð¸ÑÑÑÐ°Ð»ÑÐ½Ð¾Ð¼ Ð¿ÑÐ¾ÑÑÑÐ°Ð½ÑÑÐ²Ðµ Ð´Ð»Ñ Ð¿ÑÐ¾ÑÐ¾ÑÐ¸Ð¿Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð°Ð»Ð³Ð¾ÑÐ¸ÑÐ¼Ð¾Ð² ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ. ÐÐ¿Ð¸ÑÐ°Ð½Ð° ÑÑÑÑ Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½Ð¸Ñ Ð¾Ð¿ÐµÑÐ°ÑÐ¸Ð¸ Ð±ÑÐ°ÑÐ¸ÑÐµÑÐ°Ð¿Ð¸Ð¸ Ð² Ð½Ð°ÑÑÐ¾ÑÑÐµÐµ Ð²ÑÐµÐ¼Ñ, Ð° ÑÐ°ÐºÐ¶Ðµ Ð¿ÑÐµÐ´ÑÑÐ°Ð²Ð»ÐµÐ½Ð¾ Ð¾Ð¿Ð¸ÑÐ°Ð½Ð¸Ðµ Ð¾Ð¿ÐµÑÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð¹ Ñ Ð°Ð²ÑÐ¾Ð¼Ð°ÑÐ¸Ð·Ð¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÐ¼ ÐºÐ¾Ð¼Ð¿Ð»ÐµÐºÑÐ¾Ð¼ Ð¸ ÑÐ¸ÑÑÐµÐ¼Ð° ÐµÐµ ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ.
description: In this paper, a mathematical model of the manipulator is developed for the study of dynamic properties, as well as for the possibility of working with this model in the virtual space for prototyping control algorithms. The essence of the operation of brachytherapy at the present time is described, as well as the description of the operating room with an automated complex and its control system.
title: Remarks Prepared for Delivery by Secretary of Transportation Elizabeth Hanford Dole, Judson College
Creators: name: Dole, Elizabeth Hanford
name: United States Department of Transportation
Publisher: name: United States Department of Transportation
publisherIdentifier: https://ror.org/02xfw2e90
publisherIdentifierScheme: ROR
Year: 1987
Subjects: classificationCode: https://trt.trb.org/term/90595
subject: Transportation safety
classificationCode: https://trt.trb.org/term/89768
subject: Transportation planning
classificationCode: https://trt.trb.org/term/88891
subject: Transportation policy

description: See the Secretary of Transportation Speeches Collection's finding aid at: https://ntl.as.atlas-sys.com/repositories/2/resources/4
description: Remarks prepared for delivery by Secretary of Transportation Elizabeth Hanford Dole at Judson College in Elgin, Illinois on May 10, 1987.
QEMPAR: QoS and Energy Aware Multi-Path Routing Algorithm for Real-Time Applications in Wireless Sensor Networks
Creators: name: Heikalabad, Saeed Rasouli
name: Rasouli, Hossein
name: Nematy, Farhad
name: Rahmani, Naeim
Publisher: name: arXiv
Year: 2011
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Enabling real time applications in wireless sensor networks requires certain delay and bandwidth which pose more challenges in the design of routing protocols. The algorithm that is used for packet routing in such applications should be able to establish a tradeoff between end to end delay parameter and energy consumption. In this paper, we propose a new multi path routing algorithm for real time applications in wireless sensor networks namely QEMPAR which is QoS aware and can increase the network lifetime. Simulation results show that the proposed algorithm is more efficient than previous algorithms in providing quality of service requirements of real-time applications.
The Holtzman Inkblot Technique: proposal for a new brief version
Creators: name: Dawe, James
name: Hawkins II, Raymond C.
name: Pezzuti, Lina
Publisher: name: Psychology Hub
Year: 2022

description: The present study focuses on the selection process of the inkblots for a new brief version of the Holtzman Inkblot Technique capable to overcome two criticisms that were addressed to the test: the excessive time of the administration (and scoring) and the limitation of one response to each inkblot. The selection of the blots from Form A was based on empirical data and the literature from both HIT and Rorschach. The work focused on the distal features of the blots and their contribution to diagnosis. Four criteria were selected for the evaluation of each inkblot: their symmetry/asymmetry quality, their frequency of Popular (P) responses, their structural ambiguity, and their ability to discriminate normals from clinical patients. A total of 13 inkblots were selected to which future psychologists/researchers can ask for two responses each. The implication of this new brief version of the test for both clinicians and researchers and suggestions for futures research are discussed.
description: Psychology Hub, Vol. 38 No. 3 (2021)
Extension or Backstage? Different teens behind Facebook and Instagram from a dynamic perspective
Creators: name: Pediconi, Maria
name: Brunori, Michela
Publisher: name: Psychology Hub
Year: 2021

description: The present research study investigates the social habits of adolescents when using digital formats. This paper explores users’ motivations and preferences for Facebook and Instagram. 238 students of middle and high school are interviewed about their way of social site networking. Our findings show not only gender and age differences but give some suggestions in two other directions: the preference for online/offline friendship and what concerns the different dynamics in managing feedback both as the seeking of approval and as the risk of FoMO. Girls monitor and peek through Instagram while boys do the same through Facebook. Facebook and Instagram are an intriguing virtual escape for the youngest but become a support for relational life for adolescents. From a dynamic perspective we found different teens behind each Social Network site related to their layout: more relational Facebook, more seductive Instagram, especially where preadolescents are concerned.
description: Psychology Hub, Vol. 38 No. 2 (2021)
title: ÐÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ ÑÐ»ÐµÐºÑÑÐ¸ÑÐµÑÐºÐ¸Ñ ÑÐ²Ð¾Ð¹ÑÑÐ² ÑÐ¾Ð½ÐºÐ¸Ñ ÑÑÐ»Ð»ÐµÑÐµÐ½Ð¾Ð²ÑÑ Ð¿Ð»ÐµÐ½Ð¾Ðº Ð¼ÐµÑÐ¾Ð´Ð¾Ð¼ Ð¸Ð¼Ð¿ÐµÐ´Ð°Ð½ÑÐ¾Ð¼ÐµÑÑÐ¸Ð¸
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Research of electric properties of thin fullerene films by an impedansometriya method
Creators: name: ÐÑÐ¸ÑÐ°ÑÑÐ½, ÐÑÑÑÑ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2019
Subjects: ÑÑÐ»Ð»ÐµÑÐµÐ½Ð¾Ð²ÑÐµ Ð¿Ð»ÐµÐ½ÐºÐ¸
Ð¸Ð¼Ð¿ÐµÐ´Ð°Ð½Ñ
ÑÐ°ÑÑÐ¾ÑÐ½Ð°Ñ Ð·Ð°Ð²Ð¸ÑÐ¸Ð¼Ð¾ÑÑÑ
ÐºÐ¾Ð½ÑÐµÐ½ÑÑÐ°ÑÐ¸Ñ Ð»Ð¾Ð²ÑÑÐµÐº
Ð¿Ð¾Ð´Ð²Ð¸Ð¶Ð½Ð¾ÑÑÑ Ð½Ð¾ÑÐ¸ÑÐµÐ»ÐµÐ¹ Ð·Ð°ÑÑÐ´Ð°
Ð½Ð°Ð¿ÑÑÐ¶ÐµÐ½Ð¸Ðµ Ð¿ÐµÑÐµÐºÐ»ÑÑÐµÐ½Ð¸Ñ
ÑÐ¾Ð¿ÑÐ¾ÑÐ¸Ð²Ð»ÐµÐ½Ð¸Ðµ
Ð·Ð¾Ð½Ð½Ð°Ñ Ð´Ð¸Ð°Ð³ÑÐ°Ð¼Ð¼Ð°
fullerene films
impedance
frequency dependence
concentration of traps
mobility of charge carriers
switching tension
resistance
zonal chart

description: ÐÐ»ÐµÐ½ÐºÐ¸ Ð½Ð° Ð¾ÑÐ½Ð¾Ð²Ðµ ÑÑÐ»Ð»Ð»ÐµÑÐµÐ½Ð° Ð¡60 Ð¿ÑÐµÐ´ÑÑÐ°Ð²Ð»ÑÑÑ Ð±Ð¾Ð»ÑÑÐ¾Ð¹ Ð½Ð°ÑÑÐ½ÑÐ¹ Ð¸Ð½ÑÐµÑÐµÑ. Ð ÑÐ°Ð±Ð¾ÑÐµ Ð±ÑÐ»Ð¸ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ñ ÐÐÐ¥ Ð¸ ÑÐ°ÑÑÐ¾ÑÐ½ÑÐµ Ð·Ð°Ð²Ð¸ÑÐ¸Ð¼Ð¾ÑÑÐ¸ Ð¸Ð¼Ð¿ÐµÐ´Ð°Ð½ÑÐ° Ð¾Ð±ÑÐ°Ð·ÑÐ¾Ð² Ð¡60 Ð½Ð° Ð¿Ð¾Ð´Ð»Ð¾Ð¶ÐºÐ°Ñ ÐÐÐ(p-ÑÐ¸Ð¿) Ð¸ ÐÐ­Ð¡(n-ÑÐ¸Ð¿). ÐÐ»ÐµÐ½ÐºÐ¸ Ð¡60 ÑÐ¾Ð»ÑÐ¸Ð½Ð¾Ð¹ 150 Ð½Ð¼ Ð¸ 200 Ð½Ð¼, Ð±ÑÐ»Ð¸ Ð¿Ð¾Ð»ÑÑÐµÐ½Ñ Ð¼ÐµÑÐ¾Ð´Ð¾Ð¼ Ð²Ð°ÐºÑÑÐ¼Ð½Ð¾Ð³Ð¾ Ð½Ð°Ð¿ÑÐ»ÐµÐ½Ð¸Ñ Ð² ÐºÐ²Ð°Ð·Ð¸Ð·Ð°Ð¼ÐºÐ½ÑÑÐ¾Ð¼ Ð¾Ð±ÑÐµÐ¼Ðµ Ð½Ð° Ð¿Ð¾Ð´Ð»Ð¾Ð¶ÐºÐ°Ñ Si. ÐÑÐ»Ð¸ Ð¸Ð·Ð¼ÐµÑÐµÐ½Ñ Ð²Ð¾Ð»ÑÑÐ°Ð¼Ð¿ÐµÑÐ½ÑÐµ ÑÐ°ÑÐ°ÐºÑÐµÑÐ¸ÑÑÐ¸ÐºÐ¸ Ð¾Ð±ÑÐ°Ð·ÑÐ¾Ð² Ð² Ð´Ð¸Ð°Ð¿Ð°Ð·Ð¾Ð½Ðµ Ð½Ð°Ð¿ÑÑÐ¶ÐµÐ½Ð¸Ð¹ 0,03-4Ð, Ð° ÑÐ°ÐºÐ¶Ðµ ÑÐ½ÑÑÑ ÑÐ°ÑÑÐ¾ÑÐ½ÑÐµ Ð´Ð°Ð½Ð½ÑÐµ Ð½Ð° ÑÐ°ÑÑÐ¾ÑÐµ 1ÐºÐÑ. ÐÐ¾Ð»ÑÑÐµÐ½Ð½ÑÐµ Ð·Ð°Ð²Ð¸ÑÐ¸Ð¼Ð¾ÑÑÐ¸ Ð±ÑÐ»Ð¸ Ð¿ÑÐ¾Ð°Ð½Ð°Ð»Ð¸Ð·Ð¸ÑÐ¾Ð²Ð°Ð½Ñ Ð² ÑÐ°Ð¼ÐºÐ°Ñ Ð¼Ð¾Ð´ÐµÐ»Ð¸ ÑÐ¾ÐºÐ¾Ð², Ð¾Ð³ÑÐ°Ð½Ð¸ÑÐµÐ½Ð½ÑÑ Ð¿ÑÐ¾ÑÑÑÐ°Ð½ÑÑÐ²ÐµÐ½Ð½ÑÐ¼ Ð·Ð°ÑÑÐ´Ð¾Ð¼ Ð¸ ÑÑÐ°Ð²Ð½ÐµÐ½Ñ Ð´ÑÑÐ³ Ñ Ð´ÑÑÐ³Ð¾Ð¼.
description: Films on the basis of Ð¡60 fullerene are of great scientific interest. In work were investigated IV characteristic and frequency dependences of an impedance of samples Ð¡60 on substrates of KDB (p-type) and KES (n-type). Films of Ð¡60 150 nm and 200 nm thick, were received by method of a vacuum sputtering in the quasiclosed volume on Si substrates. Current-voltage characteristics of samples were measured in voltage range of 0.03-4V and also frequency data at a frequency of 1 kHz are taken off. The received dependences were analyzed within model of the currents limited to a spatial charge and compared with each other.
title: Remarks Prepared for Delivery by Secretary of Transportation Elizabeth Hanford Dole, Harriman Memorial Awards Institute
Creators: name: Dole, Elizabeth Hanford
name: United States Department of Transportation
Publisher: name: United States Department of Transportation
publisherIdentifier: https://ror.org/02xfw2e90
publisherIdentifierScheme: ROR
Year: 1987
Subjects: classificationCode: https://trt.trb.org/term/90595
subject: Transportation safety
classificationCode: https://trt.trb.org/term/89768
subject: Transportation planning
classificationCode: https://trt.trb.org/term/88891
subject: Transportation policy

description: See the Secretary of Transportation Speeches Collection's finding aid at: https://ntl.as.atlas-sys.com/repositories/2/resources/4
description: Remarks prepared for delivery by Secretary of Transportation Elizabeth Hanford Dole for the Harriman Memorial Awards Institute on May 12, 1987 in Washington, D.C.
Seismology of transversely oscillating coronal loops with siphon flows
Creators: name: Terradas, J.
name: Arregui, I.
name: Verth, G.
name: Goossens, M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: There are ubiquitous flows observed in the solar atmosphere of sub-Alfvénic speeds, however after flaring and coronal mass ejection events flows can become Alfvénic. In this Letter, we derive an expression for the standing kink mode frequency due to siphon flow in coronal loops, valid for both low and high speed regimes. It is found that siphon flow introduces a linear spatially dependent phase shift along coronal loops and asymmetric eigenfunctions. We demonstrate how this theory can be used to determine the kink and flow speed of oscillating coronal loops with reference to an observational case study. It is shown that the presence of siphon flow can cause the underestimation of magnetic field strength in coronal loops using the traditional seismological methods.
Comparison of transverse dentoalveolar and circummaxillary sutural changes in different maxillary expansion protocols : a retrospective study
Creators: name: Thong, Emily Katherine Weng-Yun
Publisher: name: University of British Columbia
Year: 2021

description: Introduction: Maxillary expansion is common in orthodontic practice and there are many different expansion protocols, including Alternating Rapid Maxillary Expansion and Constriction (Alt-RMEC). Objectives: to analyze the dentoalveolar, skeletal and circummaxillary sutural changes, using retrospective Cone Beam Computed Tomography (CBCT) records, to compare 2 different maxillary expansion protocols: conventional Rapid Maxillary Expansion (RME) and Alt-RMEC. Methods: Data was collected from 34 growing Class III (maxillary deficient) patients, aged between 7.2 – 12.5 years old, who were randomly 1:1 allocated to either treatment group. Pre-treatment (T0) and post-treatment (T1) CBCT records were used to measure dentoalveolar, skeletal and circummaxillary sutural variables. Cervical Vertebral Maturation Stage (CVMS) and Mid-Palatal Suture Density (MPSD) ratio were measured using pre-treatment CBCTs. Differences between the two protocols were analyzed using students’ t-tests and linear regression models. Results: both expansion protocols produced pyramidal expansion patterns, both anterior-posteriorly and inferior-superiorly, except at the anterior nasal level where Alt-RMEC resulted in parallel expansion. Alt-RMEC produced statistically and clinically significantly less amount of maxillary 1st molar tipping (P < 0.05) and resulted in increased nasal aperture widening (P < 0.05) as a result of distraction of multiple midline craniofacial sutures. Males had larger amounts of posterior and middle palatal basal width expansion than females, with sex accounting for 20.0% and 20.5% of treatment change variation. Increasing CVMS and females produced larger amounts of right nasomaxillary suture opening, with both explanatory variables accounting for 34.0% of the variation in treatment change. Age and MPSD ratio were not correlated with any dentoalveolar, skeletal or sutural treatment change. Conclusions: our study found that RME and Alt-RMEC resulted in similar transverse dentoalveolar and skeletal measurements in addition to circummaxillary sutural changes. Aside from Alt-RMEC causing less maxillary 1st molar tipping and increased widening of the nasal aperture, the complexities of the protocol may not justify its use over conventional maxillary expansion in terms of maxillary expansion only. One should continue to consider factors such as age and skeletal maturity, as assessed by CVMS, when considering maxillary expansion in an orthodontic patient.
Geometric picture of generalized-CP and Higgs-family transformations in the two-Higgs-doublet model
Creators: name: Ferreira, P. M.
name: Haber, Howard E.
name: Maniatis, M.
name: Nachtmann, O.
name: Silva, Joao P.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In the two-Higgs-doublet model (THDM), generalized-CP transformations (phi_i--> X_{ij} phi_j^* where X is unitary) and unitary Higgs-family transformations (phi_i--> U_{ij} phi_j) have recently been examined in a series of papers. In terms of gauge-invariant bilinear functions of the Higgs fields phi_i, the Higgs-family transformations and the generalized-CP transformations possess a simple geometric description. Namely, these transformations correspond in the space of scalar-field bilinears to proper and improper rotations, respectively. In this formalism, recent results relating generalized CP transformations with Higgs-family transformations have a clear geometric interpretation.
description: 31 pages, 1 figure, 3 tables
Solar Models with Revised Abundance
Creators: name: Bi, Shaolan
name: Li, Tanda
name: Li, Linghuai
name: Yang, Wuming
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present new solar models in which we use the latest low abundances and we further include the effects of rotation, magnetic fields and extra-mixing processes. We assume that the extra-element mixing can be treated as a diffusion process, with the diffusion coefficient depending mainly on the solar internal configuration of rotation and magnetic fields. We find that such models can well reproduce the observed solar rotation profile in the radiative region. Furthermore the proposed models can match the seismic constraints better than the standard solar models, also when these include the latest abundances, but neglect the effects of rotation and magnetic fields.
description: Accepted by ApJL
title: Remarks Prepared for Delivery by Secretary of Transportation Elizabeth Hanford Dole, Experimental Safety Vehicle Conference
Creators: name: Dole, Elizabeth Hanford
name: United States Department of Transportation
Publisher: name: United States Department of Transportation
publisherIdentifier: https://ror.org/02xfw2e90
publisherIdentifierScheme: ROR
Year: 1987
Subjects: classificationCode: https://trt.trb.org/term/90595
subject: Transportation safety
classificationCode: https://trt.trb.org/term/89768
subject: Transportation planning
classificationCode: https://trt.trb.org/term/88891
subject: Transportation policy

description: See the Secretary of Transportation Speeches Collection's finding aid at: https://ntl.as.atlas-sys.com/repositories/2/resources/4
description: Remarks prepared for delivery by Secretary of Transportation Elizabeth Hanford Dole for the Experimental Safety Vehicle Conference in Arlington, Virginia on May 12, 1987.
Additional file 1 of New insights into fibrous cap thickness of vulnerable plaques assessed by optical coherence tomography
Creators: name: Liu, Xianglan
name: He, Wujian
name: Hong, Xulin
name: Li, Duanbin
name: Chen, Zhezhe
name: Wang, Yao
name: Chen, Zhaoyang
name: Luan, Yi
name: Zhang, Wenbin
Publisher: name: figshare
Year: 2022
Subjects: subject: Physical Sciences not elsewhere classified
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Molecular Biology
subject: Hematology
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology

description: Additional file 1: Supplement Figure 1. Receiver operating characteristic curves for measurements of fibrous cap thickness for prediction of plaque rupture (A), thrombosis (B) or plaque rupture with thrombosis (C). AUC, area under the curve.
Effects of the COVID-19 pandemic in ECEC centers: social and psychological impact on children and teachers
Creators: name: Berti, Sara
name: Cigala, Ada
name: Severgnini, Laura
Publisher: name: Psychology Hub
Year: 2022

description: Early Childhood Education and Care (ECEC) centers are extremely significant contexts for understanding the effects of COVID-19 pandemic and teachers are privileged interlocutors to detect changes in children’s behavioral manifestations. Starting from these premises, the present study aimed to investigate the social and psychological impact of the pandemic on children and teachers and the strategies implemented to cope with it in the context of ECEC centers. 161 teachers completed an online survey which investigated four main themes: 1) impact of pandemic on children; 2) impact of pandemic on teachers; 3) children’s vulnerabilities and resources; 4) strategies implemented to cope with the impact of pandemic. Qualitative content analysis allowed to identify representative categories for each open-ended question and statistical frequency showed the distribution of the categories within each variable. Results showed changes in behavior, play and conversations between children, let emerge teachers’ concerns, highlighted children’s fragilities and resilience and allowed to identify the main strategies implemented to cope with negative effects observed after lockdown. The study provided an interesting overview of the impact of the pandemic, which allows researchers and professionals to focus on aspects relevant to the design and implementation of interventions with both children and teachers.
description: Psychology Hub, Vol. 38 No. 3 (2021)
Reionization simulations powered by GPUs I: the structure of the Ultraviolet radiation field
Creators: name: Aubert, Dominique
name: Teyssier, Romain
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: We present a set of cosmological simulations with radiative transfer in order to model the reionization history of the Universe. Galaxy formation and the associated star formation are followed self-consistently with gas and dark matter dynamics using the RAMSES code, while radiative transfer is performed as a post-processing step using a moment-based method with M1 closure relation in the ATON code. The latter has been ported to a multiple Graphics Processing Units (GPU) architecture using CUDA + MPI, resulting in an overall acceleration (x80) that allows us to tackle radiative transfer problems at resolution of 1024^3 + 2 levels of refinement for the hydro adaptive grid and 1024^3 for the RT cartesian grid. We observe a good convergence between our different resolution runs as long as the effects of finite resolution on the star formation history are properly taken into account. We also show that the neutral fraction depends on the total mass density, in a way close to the predictions of photoionization equilibrium, as long as the effect of self-shielding is included in the background radiation model. However we still fail at reproducing the z=6 constraints on the H neutral fraction and the intensity of the UV background. In order to account for unresolved density fluctuations, we added a simple clumping factor model. Using our most spatially resolved simulation (12.5 Mpc/h-1024^3) to calibrate our subgrid model, we have resimulated our largest box (100 Mpc/h 1024^3), successfully reproducing the observed level of H neutral fraction at z=6. We don't reproduce the photoionization rate inferred from the same observations. We argue that this discrepancy could be explained by the fact that the average radiation intensity and the average neutral fraction depends on different regions of the gas density distribution, so that one quantity cannot be simply deduced from the other.
description: 21 pages, submitted to ApJ
Dressed-atom multiphoton analysis of anomalous electromagnetically induced absorption
Creators: name: Chou, H. -S.
name: Evers, J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: A method to interpret probe spectra of driven degenerate atomic systems is discussed. The dressed-atom multiphoton spectroscopy (DAMS) is based on a dressing of the atomic system with the strong coupling field, followed by a perturbative treatment of the probe field interaction. As example, we apply the DAMS to provide a clear interpretation for anomalous electromagnetically induced absorption (EIA), which cannot be explained by spontaneous transfer of coherence. We show that anomalous EIA arises from quantum interference between competing two-photon transitions, and explain the different dependences on the coupling field strength observed for various angular momentum setups.
Interplay of Kondo and superconducting correlations in the nonequilibrium Andreev transport through a quantum dot
Creators: name: Yamada, Yasuhiro
name: Tanaka, Yoichi
name: Kawakami, Norio
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Using the modified perturbation theory, we theoretically study the nonequilibrium Andreev transport through a quantum dot coupled to normal and superconducting leads (N-QD-S), which is strongly influenced by the Kondo and superconducting correlations. From the numerical calculation, we find that the renormalized couplings between the leads and the dot in the equilibrium states characterize the peak formation in the nonequilibrium differential conductance. In particular, in the Kondo regime, the enhancement of the Andreev transport via a Kondo resonance occurs in the differential conductance at a finite bias voltage, leading to an anomalous peak whose position is given by the renormalized parameters. In addition to the peak, we show that the energy levels of the Andreev bound states give rise to other peaks in the differential conductance in the strongly correlated N-QD-S system. All these features of the nonequilibrium transport are consistent with those in the recent experimental results [R. S. Deacon {\it et al.}, Phys. Rev. Lett. {\bf 104}, 076805 (2010); Phys. Rev. B {\bf 81}, 12308 (2010)]. We also find that the interplay of the Kondo and superconducting correlations induces an intriguing pinning effect of the Andreev resonances to the Fermi level and its counter position.
description: 22 pages, 23 figures