192 research outputs found

    Connecting the dots between brand experience and brand loyalty: The mediating role of brand personality and brand relationships

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    This article critically examines consumer–brand relationships from the perspective of interpersonal relationship theory. Specifically, the authors investigate the relationship between brand experience and the two components of brand loyalty, namely purchase brand loyalty and attitudinal brand loyalty. The study also examines the link between brand experience and brand relationship variables, brand trust, brand attachment and brand commitment. In addition, the mediating role of brand personality and brand commitment in the relationship between brand experience and brandloyalty is investigated. Drawing on the results of an empirical cross-brand study from three product categories, the authors demonstrate that brand experience, brand personality and brand relationship variables (brand attachment and brand commitment) all affect the degree to which a consumer is loyal to a brand. On the basis of the findings, the authors offer guidelines to managers on how to build and sustain purchase and attitudinal brand loyalty by enhancing brand experience. The theoretical and managerial significance of the findings together with directions for future research are discussed

    Test beam performance of a CBC3-based mini-module for the Phase-2 CMS Outer Tracker before and after neutron irradiation

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    The Large Hadron Collider (LHC) at CERN will undergo major upgrades to increase the instantaneous luminosity up to 5–7.5×1034^{34} cm2^{-2}s1^{-1}. This High Luminosity upgrade of the LHC (HL-LHC) will deliver a total of 3000–4000 fb-1 of proton-proton collisions at a center-of-mass energy of 13–14 TeV. To cope with these challenging environmental conditions, the strip tracker of the CMS experiment will be upgraded using modules with two closely-spaced silicon sensors to provide information to include tracking in the Level-1 trigger selection. This paper describes the performance, in a test beam experiment, of the first prototype module based on the final version of the CMS Binary Chip front-end ASIC before and after the module was irradiated with neutrons. Results demonstrate that the prototype module satisfies the requirements, providing efficient tracking information, after being irradiated with a total fluence comparable to the one expected through the lifetime of the experiment

    Evaluation of planar silicon pixel sensors with the RD53A readout chip for the Phase-2 Upgrade of the CMS Inner Tracker

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    The Large Hadron Collider at CERN will undergo an upgrade in order to increase its luminosity to 7.5 × 10³⁴ cm⁻²s⁻¹. The increased luminosity during this High-Luminosity running phase, starting around 2029, means a higher rate of proton-proton interactions, hence a larger ionizing dose and particle fluence for the detectors. The current tracking system of the CMS experiment will be fully replaced in order to cope with the new operating conditions. Prototype planar pixel sensors for the CMS Inner Tracker with square 50 μm × 50 μm and rectangular 100 μm × 25 μm pixels read out by the RD53A chip were characterized in the lab and at the DESY-II testbeam facility in order to identify designs that meet the requirements of CMS during the High-Luminosity running phase. A spatial resolution of approximately 3.4 μm (2 μm) is obtained using the modules with 50 μm × 50 μm (100 μm × 25 μm) pixels at the optimal angle of incidence before irradiation. After irradiation to a 1 MeV neutron equivalent fluence of Φeq = 5.3 × 10¹⁵ cm⁻², a resolution of 9.4 μm is achieved at a bias voltage of 800 V using a module with 50 μm × 50 μm pixel size. All modules retain a hit efficiency in excess of 99% after irradiation to fluences up to 2.1 × 10¹⁶ cm⁻². Further studies of the electrical properties of the modules, especially crosstalk, are also presented in this paper

    PARITY SELECTED EXCITATION SPECTROSCOPY OF ArCl2

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    Author Institution: Department of Chemistry, University of PittsburghParity selected excitation spectra have been recorded of the B-X transition of ArCl2 with 0.05 cm-1 resolution. The resolution is such that rotational structure is clearly evident, but not cleanly resolved. Since simulated spectra using a rigid-rotor model are able to fit the whole spectrum and the even and odd parity selected spectra, we are confident that the spectrum is correctly assigned. ArCl2ArCl_{2} is found to be a ``T'' shaped molecule with a 3.7 {\AA} distance between the center of the Ar atom and the center of mass of the Cl2Cl_{2} molecule. This compares to ArC1F which is a linear molecule with only a 3.3 *** Ar-Cl separation. By measuring the vibrational predissociation threshold, the ArCl2Ar-Cl_{2} bond energy was found to be 178±1cm1178 \pm 1 cm^{-1} in the B state and 188±1cm1188 \pm 1 cm^{-1} in the X state

    PRODUCT STATE DISTRIBUTION OF THE PHOTODISSOCIATION OF THE NeBr2NeBr_{2} VAN DER WAALS MOLECULE

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    1^{1} F. Thommen, D.D. Evard, and K.C. Janda, J. Chem. Phys. 82\underline{82}, 5295, (1985). Address of Cline, Evard, and Janda: Chemistry Building, University of Pittsburgh, Pittsburgh, PA 15260.Author Institution:Van der Waals molecules formed by rare gas atoms bound to halogen molecules are simple molecular systems on which fundamental theories of chemical dynamics may be tested. Vibrational predissociation of NeBr2NeBr_{2} occurs in the reaction \begin{equation}NeBr_{2}(X,v^{\prime\prime}, J^{\prime}) \to hu \to NeBr_{2}(B,v^{\prime},J^{\prime})\end{equation} \begin{equation}NeBr_{2}(B,v^{\prime},J^{\prime})\to Ne \to Br_{2}(B,v^{\prime}-n,J)\end{equation} Here X and B indicate the electronic states of NeBr2NeBr_{2} corresponding to the associated electronic states of free Br2Br_{2} and v is the vibrational quantum number of the Br-Br stretching mode. NeBr2(B,v)NeBr_{2} (B,v^{\prime}) has a lifetime of typically much less than one nanosecond. High resolution laser induced fluorescence studies have yielded accurate structural information about the X and B electronic states of NeBr2NeBr_{2} as well as vibrational state dependent rates for (2). The radiative lifetime of Br2(B)Br_{2}(B) is several orders of magnitude greater than the predissociation lifetime of NeBr2NeBr_{2}. By dispersing the fluorescence of the Br2Br_{2} fragment the vibrational and rotational state distributions of the reaction products are obtained, giving quantum state to state understanding of the reaction dynamics. Further analysis of the spectra allows indirect determination of the depth of the van der Waals potential. Preliminary results show evidence of rotational excitation of the Br2Br_{2} fragment and the loss of multiple vibrational quanta upon excitation of the higher vv^{\prime} states

    Chain rules for functions of matrices

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