Search results for: G. Sellers

Items from 1 to 20 out of 283 results

article

Effects of sample size and distributional assumptions on competing models of the factor structure of the PANSS and BPRS

Stephen J. Tueller, Kiersten L. Johnson, Kevin J. Grimm, Sarah L. Desmarais, more

International Journal of Methods in Psychiatric Research > 26 > 4 > n/a - n/a

Factor analytic work on the Positive and Negative Syndrome Scale (PANSS) and Brief Psychiatric Rating Scale (BPRS) has yielded varied and conflicting results. The current study explored potential causes of these discrepancies. Prior research has been limited by small sample sizes and an incorrect assumption that the items are normally distributed when in practice responses are highly skewed ordinal...

article

A Feasibility Study Evaluating the Emotionally Expressive Robot SAM

Sarah A. Koch, Carl E. Stevens, Christian D. Clesi, Jenna B. Lebersfeld, more

International Journal of Social Robotics > 2017 > 9 > 4 > 601-613

This two-part feasibility study evaluated the functionality and acceptability of Socially Animated Machine (SAM), a humanoid robotic monkey developed to elicit social interaction in children with Autism Spectrum Disorder (ASD). Socially Animated Machine was designed with an approachable, animal-like appearance, while preserving the essential features of a human face. The intent was to design a robot...

article

The latent structure of psychiatric symptoms across mental disorders as measured with the PANSS and BPRS-18

Richard A. Van Dorn, Sarah L. Desmarais, Kevin J. Grimm, Stephen J. Tueller, more

Psychiatry Research > 2016 > 245 > C > 83-90

Raw data were used from five studies of adults with mental illnesses (N=4,480) in an attempt to identify a psychiatric symptoms factor structure, as measured by the Positive and Negative Syndrome Scale or the Brief Psychiatric Rating Scale, that was generalizable across participant characteristics. First, the fit of four extant models was tested via confirmatory factor analysis (CFA), then exploratory...

article

Addendum to ‘Measurement of the $$t\bar{t}$$ t t ¯ production cross-section using $$e\mu $$ e μ events with b-tagged jets in pp collisions at $$\sqrt{s}$$ s = 7 and 8 $$\,\mathrm{TeV}$$ TeV with the ATLAS detector’

G. Aad, B. Abbott, J. Abdallah, S. Abdel Khalek, more

The European Physical Journal C > 2016 > 76 > 11 > 1-14

The ATLAS measurement of the inclusive top quark pair ( $$t\bar{t}$$ t t ¯ ) cross-section $$\sigma _{t\bar{t}}$$ σ t t ¯ in proton–proton collisions at $$\sqrt{s}=8$$ s = 8 $$\,\mathrm{TeV}$$ TeV has been updated using the final 2012 luminosity calibration. The updated cross-section result is: $$\begin{aligned} \sigma _{t\bar{t}}= 242...

article

Novel nanostructures for efficient photon upconversion and high-efficiency photovoltaics

Diane G. Sellers, Jing Zhang, Eric Y. Chen, Yujun Zhong, more

Solar Energy Materials and Solar Cells > 2016 > 155 > C > 446-453

Upconversion of low-energy photons theoretically allows the creation of single-junction solar cells with efficiency far above the Shockley-Queisser (SQ) limit. However, the net efficiency gains that can be realized depend critically on details of the upconversion process employed. We define three important metrics of the performance of an upconversion material: upconversion quantum efficiency (UQE),...

article

A Kinetic Rate Model of Novel Upconversion Nanostructures for High-Efficiency Photovoltaics

Eric Y. Chen, Jing Zhang, Diane G. Sellers, Yujun Zhong, more

IEEE Journal of Photovoltaics > 2016 > 6 > 5 > 1183 - 1190

We present a computational model for predicting the net solar energy conversion efficiency of a single-junction solar cell backed by a solid-state photon upconverter. We describe and model the upconversion process using a series of kinetic rate equations to calculate equilibrium populations in a single upconversion nanostructure. We determine the internal upconversion quantum efficiency of the proposed...

chapter

Time-resolved photoluminescence spectroscopy of CdTe/CdS/CdSe quantum dot complexes for photon upconversion

Eric Y. Chen, Diane G. Sellers, Matthew F. Doty

2016 IEEE 43rd Photovoltaic Specialists Conference (PVSC) > 155 - 159

2016 IEEE 43rd Photovoltaic Specialists Conference (PVSC)

Solution-processed core/multi-shell semiconductor quantum dots (QDs) could be tailored to facilitate the carrier separation and recombination mechanisms necessary to implement photon upconversion. We have synthesized CdTe cores capped with CdS and then CdSe shells. We present steady-state and time-resolved photoluminescence (PL) spectroscopy measurements of these QDs as a function of varying shell...

article

Measurement of the centrality dependence of the charged-particle pseudorapidity distribution in proton–lead collisions at $$\sqrt{s_{_\text {NN}}} = 5.02$$ s NN = 5.02 TeV with the ATLAS detector

G. Aad, T. Abajyan, B. Abbott, J. Abdallah, more

The European Physical Journal C > 2016 > 76 > 4 > 1-30

The centrality dependence of the mean charged-particle multiplicity as a function of pseudorapidity is measured in approximately 1 $$\upmu $$ μ b $$^{-1}$$ - 1 of proton–lead collisions at a nucleon–nucleon centre-of-mass energy of $$\sqrt{s_{_\text {NN}}} = 5.02$$ s NN = 5.02 $$\text {TeV}$$ TeV using the ATLAS detector at the Large Hadron Collider...

article

Measurement of the production of neighbouring jets in lead–lead collisions at sNN=2.76 TeV with the ATLAS detector

G. Aad, B. Abbott, J. Abdallah, S. Abdel Khalek, more

Physics Letters B > 2015 > 751 > C > 376-395

This Letter presents measurements of correlated production of nearby jets in Pb+Pb collisions at sNN=2.76 TeV using the ATLAS detector at the Large Hadron Collider. The measurement was performed using 0.14 nb−1 of data recorded in 2011. The production of correlated jet pairs was quantified using the rate, RΔR, of “neighbouring” jets that accompany “test” jets within a given range of angular distance,...

article

Erratum to: Measurement of the inclusive jet cross-section in proton-proton collisions at s = 7 $$ \sqrt{s}=7 $$ TeV using 4.5 fb⁻¹ of data with the ATLAS detector

The ATLAS collaboration, G. Aad, B. Abbott, J. Abdallah, more

Journal of High Energy Physics > 2015 > 2015 > 9 > 1-39

Abstract It was found that the non-perturbative corrections calculated using Pythia with the Perugia 2011 tune did not include the effect of the underlying event. The affected correction factors were recomputed using the Pythia 6.427 generator. These corrections are applied as baseline to the NLO pQCD calculations and thus the central values of the theoretical predictions have changed by a few percent...

article

Measurement of the forward-backward asymmetry of electron and muon pair-production in pp collisions at s = 7 $$ \sqrt{s}=7 $$ TeV with the ATLAS detector

The ATLAS collaboration, G. Aad, B. Abbott, J. Abdallah, more

Journal of High Energy Physics > 2015 > 2015 > 9 > 1-43

Abstract This paper presents measurements from the ATLAS experiment of the forward-backward asymmetry in the reaction pp → Z/γ^* → l⁺l⁻, with l being electrons or muons, and the extraction of the effective weak mixing angle. The results are based on the full set of data collected in 2011 in pp collisions at the LHC at s = 7 $$ \sqrt{s}=7 $$ TeV, corresponding to an integrated luminosity...

article

Centrality and rapidity dependence of inclusive jet production in sNN=5.02 TeV proton–lead collisions with the ATLAS detector

G. Aad, B. Abbott, J. Abdallah, S. Abdel Khalek, more

Physics Letters B > 2015 > 748 > Complete > 392-413

Measurements of the centrality and rapidity dependence of inclusive jet production in s_N _N=5.02 TeV proton-lead (p+Pb) collisions and the jet cross-section in s=2.76 TeV proton-proton collisions are presented. These quantities are measured in datasets corresponding to an integrated luminosity of 27.8 nb^- ¹ and 4.0 pb^- ¹, respectively, recorded with the ATLAS detector at the Large Hadron Collider in...

article

Search for new phenomena in events with three or more charged leptons in pp collisions at s=8 $$ \sqrt{s}=8 $$ TeV with the ATLAS detector

The ATLAS collaboration, G. Aad, B. Abbott, J. Abdallah, more

Journal of High Energy Physics > 2015 > 2015 > 8 > 1-60

Abstract A generic search for anomalous production of events with at least three charged leptons is presented. The data sample consists of pp collisions at s=8 $$ \sqrt{s}=8 $$ TeV collected in 2012 by the ATLAS experiment at the CERN Large Hadron Collider, and corresponds to an integrated luminosity of 20.3 fb⁻¹. Events are required to have at least three selected lepton candidates, at least two...

article

Differential top-antitop cross-section measurements as a function of observables constructed from final-state particles using pp collisions at s = 7 $$ \sqrt{s}=7 $$ TeV in the ATLAS detector

The ATLAS collaboration, G. Aad, B. Abbott, J. Abdallah, more

Journal of High Energy Physics > 2015 > 2015 > 6 > 1-56

Abstract Various differential cross-sections are measured in top-quark pair t t ¯ $$ \left(t\overline{t}\right) $$ events produced in proton-proton collisions at a centre-of-mass energy of s = 7 $$ \sqrt{s}=7 $$ TeV at the LHC with the ATLAS detector. These differential cross-sections are presented in a data set corresponding to an integrated luminosity of 4.6 fb⁻¹. The...

chapter

Design, synthesis and photophysical properties of InP/CdS/CdSe and CdTe/CdS/CdSe (core/shell/shell) quantum dots for photon upconversion

Diane G. Sellers, Matthew F. Doty

2015 IEEE 42nd Photovoltaic Specialist Conference (PVSC) > 1 - 5

2015 IEEE 42nd Photovoltaic Specialists Conference (PVSC)

Complex core/multi-shell quantum dot (QD) configurations can be used to tailor light absorption and emission properties. We present a core/shell/shell/shell structure designed to implement efficient photon upconversion. We report on the design and characterization of two intermediate products that could progress to implement this design: InP/CdS/CdSe and CdTe/CdS/CdSe. Products were synthesized by...

chapter

A kinetic rate model of novel upconversion nanostructures for high-efficiency photovoltaics

Eric Y. Chen, Jing Zhang, Diane G. Sellers, Yujun Zhong, more

2015 IEEE 42nd Photovoltaic Specialist Conference (PVSC) > 1 - 6

2015 IEEE 42nd Photovoltaic Specialists Conference (PVSC)

We present a computational model for predicting the net solar energy conversion efficiency of a single-junction solar cell backed by a solid-state photon upconversion nanostructure. We model the upconversion process using a series of kinetic rate equations to calculate equilibrium populations. We determine the upconversion quantum efficiency (UQE) of the proposed device as a function of intentionally...

article

Search for squarks and gluinos in events with isolated leptons, jets and missing transverse momentum at s=8 $$ \sqrt{s}=8 $$ TeV with the ATLAS detector

The ATLAS collaboration, G. Aad, B. Abbott, J. Abdallah, more

Journal of High Energy Physics > 2015 > 2015 > 4 > 1-75

Abstract The results of a search for supersymmetry in final states containing at least one isolated lepton (electron or muon), jets and large missing transverse momentum with the ATLAS detector at the Large Hadron Collider are reported. The search is based on proton-proton collision data at a centre-of-mass energy s=8 $$ \sqrt{s}=8 $$ TeV collected in 2012, corresponding to an integrated luminosity...

article

Evidence for the Higgs-boson Yukawa coupling to tau leptons with the ATLAS detector

The ATLAS collaboration, G. Aad, B. Abbott, J. Abdallah, more

Journal of High Energy Physics > 2015 > 2015 > 4 > 1-74

Abstract Results of a search for H → ττ decays are presented, based on the full set of proton-proton collision data recorded by the ATLAS experiment at the LHC during 2011 and 2012. The data correspond to integrated luminosities of 4.5 fb⁻¹ and 20.3 fb⁻¹ at centre-of-mass energies of s=7 $$ \sqrt{s}=7 $$ TeV and s=8 $$ \sqrt{s}=8 $$ TeV respectively. All combinations of leptonic ( τ→ℓνν¯ $$ \tau...

article

Search for pair-produced long-lived neutral particles decaying to jets in the ATLAS hadronic calorimeter in pp collisions at s=8 TeV

G. Aad, B. Abbott, J. Abdallah, S. Abdel Khalek, more

Physics Letters B > 2015 > 743 > C > 15-34

The ATLAS detector at the Large Hadron Collider at CERN is used to search for the decay of a scalar boson to a pair of long-lived particles, neutral under the Standard Model gauge group, in 20.3 fb−1 of data collected in proton–proton collisions at s=8 TeV. This search is sensitive to long-lived particles that decay to Standard Model particles producing jets at the outer edge of the ATLAS electromagnetic...

article

Search for W′→tb¯ in the lepton plus jets final state in proton–proton collisions at a centre-of-mass energy of s=8 TeV with the ATLAS detector

G. Aad, B. Abbott, J. Abdallah, S. Abdel Khalek, more

Physics Letters B > 2015 > 743 > C > 235-255

A search for new charged massive gauge bosons, called W′, is performed with the ATLAS detector at the LHC, in proton–proton collisions at a centre-of-mass energy of s=8 TeV, using a dataset corresponding to an integrated luminosity of 20.3 fb−1. This analysis searches for W′ bosons in the W′→tb¯ decay channel in final states with electrons or muons, using a multivariate method based on boosted decision...

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INFONA - science communication portal

Search results for: G. Sellers

Effects of sample size and distributional assumptions on competing models of the factor structure of the PANSS and BPRS

A Feasibility Study Evaluating the Emotionally Expressive Robot SAM

The latent structure of psychiatric symptoms across mental disorders as measured with the PANSS and BPRS-18

Addendum to ‘Measurement of the $$t\bar{t}$$ t t ¯ production cross-section using $$e\mu $$ e μ events with b-tagged jets in pp collisions at $$\sqrt{s}$$ s = 7 and 8 $$\,\mathrm{TeV}$$ TeV with the ATLAS detector’

Novel nanostructures for efficient photon upconversion and high-efficiency photovoltaics

A Kinetic Rate Model of Novel Upconversion Nanostructures for High-Efficiency Photovoltaics

Time-resolved photoluminescence spectroscopy of CdTe/CdS/CdSe quantum dot complexes for photon upconversion

Measurement of the centrality dependence of the charged-particle pseudorapidity distribution in proton–lead collisions at $$\sqrt{s_{_\text {NN}}} = 5.02$$ s NN = 5.02 TeV with the ATLAS detector

Measurement of the production of neighbouring jets in lead–lead collisions at sNN=2.76 TeV with the ATLAS detector

Erratum to: Measurement of the inclusive jet cross-section in proton-proton collisions at s = 7 $$ \sqrt{s}=7 $$ TeV using 4.5 fb⁻¹ of data with the ATLAS detector

Measurement of the forward-backward asymmetry of electron and muon pair-production in pp collisions at s = 7 $$ \sqrt{s}=7 $$ TeV with the ATLAS detector

Centrality and rapidity dependence of inclusive jet production in sNN=5.02 TeV proton–lead collisions with the ATLAS detector

Search for new phenomena in events with three or more charged leptons in pp collisions at s=8 $$ \sqrt{s}=8 $$ TeV with the ATLAS detector

Differential top-antitop cross-section measurements as a function of observables constructed from final-state particles using pp collisions at s = 7 $$ \sqrt{s}=7 $$ TeV in the ATLAS detector

Design, synthesis and photophysical properties of InP/CdS/CdSe and CdTe/CdS/CdSe (core/shell/shell) quantum dots for photon upconversion

A kinetic rate model of novel upconversion nanostructures for high-efficiency photovoltaics

Search for squarks and gluinos in events with isolated leptons, jets and missing transverse momentum at s=8 $$ \sqrt{s}=8 $$ TeV with the ATLAS detector

Evidence for the Higgs-boson Yukawa coupling to tau leptons with the ATLAS detector

Search for pair-produced long-lived neutral particles decaying to jets in the ATLAS hadronic calorimeter in pp collisions at s=8 TeV

Search for W′→tb¯ in the lepton plus jets final state in proton–proton collisions at a centre-of-mass energy of s=8 TeV with the ATLAS detector

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