Existing research shows that loyalty is a function of customer perceptions of trust following service recovery. The authors propose a cognitive appraisal model that portrays trust and emotions as key mediators in the relationship between perceived justice and customer loyalty. A structural equation model was used to test the conceptual model. The findings support the conjecture that emotions and trust have important mediating roles during the service recovery process. Furthermore, while existing research has focused primarily on negative emotion, the authors' model adopts a two-dimensional view of emotion (positive and negative emotions), and the results support the inclusion of both dimensions. Overall, the empirical support for the proposed model has important managerial implications for effective relationship management. By understanding the important mediating roles of trust and emotion, service employees can deliver more effective service recovery strategies and thereby enhance customer loyalty.

In 2014, the National Institutes of Health (NIH) initiated the Illuminating the Druggable Genome (IDG) program to identify and improve our understanding of poorly characterized proteins that can potentially be modulated using small molecules or biologics. Two resources produced from these efforts are: The Target Central Resource Database (TCRD) (http://juniper.health.unm.edu/tcrd/) and Pharos (https://pharos.nih.gov/), a web interface to browse the TCRD. The ultimate goal of these resources is to highlight and facilitate research into currently understudied proteins, by aggregating a multitude of data sources, and ranking targets based on the amount of data available, and presenting data in machine learning ready format. Since the 2017 release, both TCRD and Pharos have produced two major releases, which have incorporated or expanded an additional 25 data sources. Recently incorporated data types include human and viral-human protein–protein interactions, protein–disease and protein–phenotype associations, and drug-induced gene signatures, among others. These aggregated data have enabled us to generate new visualizations and content sections in Pharos, in order to empower users to find new areas of study in the druggable genome.

Vibrating nano-and micromechanical resonators have been the subject of research aiming at ultrasensitive mass sensors for mass spectrometry, chemical analysis and biomedical diagnosis.Unfortunately, their merits diminish dramatically in liquids due to dissipative mechanisms like viscosity and acoustic losses. A push towards faster and lighter miniaturized nanodevices would enable improved performances, provided dissipation was controlled and novel techniques were available to efficiently drive and read-out their minute displacement. Here we report on a nanooptomechanical approach to this problem using miniature semiconductor disks. These devices combine mechanical motion at high frequency above the GHz, ultra-low mass of a few picograms, and moderate dissipation in liquids. We show that high-sensitivity optical measurements allow to direct resolve their thermally driven Brownian vibrations, even in the most dissipative liquids.Thanks to this novel technique, we experimentally, numerically and analytically investigate the interaction of these resonators with arbitrary liquids. Nano-optomechanical disks emerge as probes of rheological information of unprecedented sensitivity and speed, opening applications in sensing and fundamental science.

We analyze the magnitude of the radiation pressure and electrostrictive stresses exerted by light confined inside GaAs semiconductor WGM optomechanical disk resonators, through analytical and numerical means, and find the electrostrictive stress to be of prime importance. We investigate the geometric and photoelastic optomechanical coupling resulting respectively from the deformation of the disk boundary and from the strain-induced refractive index changes in the material, for various mechanical modes of the disks. Photoelastic optomechanical coupling is shown to be a predominant coupling mechanism for certain disk dimensions and mechanical modes, leading to total coupling gom and g(0) reaching respectively 3 THz/nm and 4 MHz. Finally, we point towards ways to maximize the photoelastic coupling in GaAs disk resonators, and we provide some upper bounds for its value in various geometries.

In common photovoltaic devices, the part of the incident energy above the absorption threshold quickly ends up as heat, which limits their maximum achievable efficiency far below the thermodynamic limit for solar energy conversion. Conversely, if the excess kinetic energy of the photogenerated carriers could be converted into additional free energy, it would be possible to approach the thermodynamic limit. This is the principle of hot carrier devices. Unfortunately, such a device operation in conditions relevant for utilisation has never been evidenced. Here we show that the quantitative thermodynamic study of the hot carrier population, with luminance measurements, allows us to discuss the hot carrier contribution to the solar cell performance. We demonstrate that voltage and current can be enhanced in a semiconductor heterostructure due to the presence of the hot carrier population in a single InGaAsP quantum well at room temperature. These experimental results substantiate the potential of increasing photovoltaic performances in the hot carrier regime.

Knowing how to handle angry customers following a service failure is an important aspect of a service provider's work role. This paper presents a conceptual framework to help marketing academics and managers better understand: (1) how customer anger is provoked by a service failure; and (2) how customer anger may be reduced through using specific service recovery attempts by service providers. Specifically, we propose a two-phase conceptual model incorporating pre-service recovery (Phase 1) and service recovery (Phase 2). We argue that in Phase 1, an external cause produces anger and that cognitive appraisal is undertaken specifically in terms of: (a) goal relevance; (b) goal incongruence; and (c) ego-involvement – and this moderates the intensity of anger experienced by the customer. In Phase 2, we argue that customer anger can be reduced if the service provider undertakes the following: (a) listening; (b) engaging in blame displacement; and (c) providing an apology to the customer.

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We report on optomechanical GaAs disk resonators with ultrahigh quality factor -frequency product Q • f . Disks standing on a simple pedestal exhibit GHz breathing modes attaining a Q • f of 10 13 measured under vacuum at cryogenic temperature. Clamping losses are found to be the dominant source of dissipation in this configuration. A new type of disk resonator integrating a shield within the pedestal is then proposed and its working principles and performances investigated by numerical simulations. For dimensions compatible with fabrication constraints, the clamping-loss-limited Q reaches 10 7 − 10 9 corresponding to Q • f of 10 16 − 10 18 . This shielded pedestal approach applies to any heterostructure presenting an acoustic mismatch.