2023
Autores
Silva, P; Moreira, AC; Mota, J;
Publicação
JOURNAL OF STRATEGY AND MANAGEMENT
Abstract
Purpose orporate social responsibility (CSR) is an evolving concept which is increasingly being adopted by companies with the purpose of creating sustained organizational growth. However, while the impact of CSR practices on employees' behaviors and attitudes has been recognized over the years, the relationship between CSR practices and employee performance remains underexplored. Design/methodology/approach Drawing on social identity theory and using the partial least squares structural equation method, this research examines the impact of CSR practices on employees' performance in a sample of 171 employees belonging to the construction industry. Findings The findings do not support the existence of a direct relationship between employees' perception of CSR and their performance; instead, they indicate that this relationship is mediated by job satisfaction and organizational trust. Research limitations/implications The data concerns employees' self-reported measures on their perceived CSR and the study was conducted in a single industry. Practical implications Adopting CSR initiatives in company strategies is worthy as the perceptions of employees and their performance is positively influenced by their organization's CSR activities. Managers should properly communicate and involve internal stakeholders in socially responsible practices to increase their awareness. Originality/value This article analyzes the impact of employees' perception of CSR on employees' performance through the roles of employee organizational trust and job satisfaction as mediating variables in a highly socially pressured industry such as construction.
2023
Autores
Barbosa, B; Marques, I; Santos, CA;
Publicação
INTERNATIONAL JOURNAL OF BUSINESS AND SOCIETY
Abstract
Happiness at work has been increasingly attracting the attention of academics and human resources managers. Literature on the topic provides clear evidence of the benefits for companies resulting from the adoption of strategies that promote happiness among employees. Despite its growing popularity, companies that define and implement a happiness strategy within their internal marketing are still scarce, particularly small and medium companies (SMEs). This paper illustrates the impact of happiness at work perceived by employees of SMEs at three levels: in themselves, in customers, and in the business's success, in the particular case of companies that do not implement such strategies. The research question was: what is the perception of employees on happiness at work outcomes when the company has no explicit strategy to promote it? This article includes a qualitative study comprising twelve semi-structured interviews with employees who directly deal with customers while working in various B2C companies that do not have a defined strategy to stimulate happiness at work. The study shows employees' acknowledgment of the multidimensional impacts of happiness at work, which makes them more motivated, productive, and more able to influence their relationships with customers positively. Based on these findings, even when lacking clear corporate strategies to improve happiness at work, the company is still expected to benefit in terms of customer loyalty and overall profitability, as well as in terms of employees' affective commitment.
2023
Autores
Pereira, AI; Franco Goncalo, P; Leite, P; Ribeiro, A; Alves Pimenta, MS; Colaco, B; Loureiro, C; Goncalves, L; Filipe, V; Ginja, M;
Publicação
VETERINARY SCIENCES
Abstract
Artificial intelligence is emerging in the field of veterinary medical imaging. The development of this area in medicine has introduced new concepts and scientific terminologies that professionals must be able to have some understanding of, such as the following: machine learning, deep learning, convolutional neural networks, and transfer learning. This paper offers veterinary professionals an overview of artificial intelligence, machine learning, and deep learning focused on imaging diagnosis. A review is provided of the existing literature on artificial intelligence in veterinary imaging of small animals, together with a brief conclusion.Artificial intelligence and machine learning have been increasingly used in the medical imaging field in the past few years. The evaluation of medical images is very subjective and complex, and therefore the application of artificial intelligence and deep learning methods to automatize the analysis process would be very beneficial. A lot of researchers have been applying these methods to image analysis diagnosis, developing software capable of assisting veterinary doctors or radiologists in their daily practice. This article details the main methodologies used to develop software applications on machine learning and how veterinarians with an interest in this field can benefit from such methodologies. The main goal of this study is to offer veterinary professionals a simple guide to enable them to understand the basics of artificial intelligence and machine learning and the concepts such as deep learning, convolutional neural networks, transfer learning, and the performance evaluation method. The language is adapted for medical technicians, and the work already published in this field is reviewed for application in the imaging diagnosis of different animal body systems: musculoskeletal, thoracic, nervous, and abdominal.
2023
Autores
Dos Santos, PSS; Mendes, JP; Dias, B; Perez-Juste, J; De Almeida, JMMM; Pastoriza-Santos, I; Coelho, LCC;
Publicação
SENSORS
Abstract
Biochemical-chemical sensing with plasmonic sensors is widely performed by tracking the responses of surface plasmonic resonance peaks to changes in the medium. Interestingly, consistent sensitivity and resolution improvements have been demonstrated for gold nanoparticles by analyzing other spectral features, such as spectral inflection points or peak curvatures. Nevertheless, such studies were only conducted on planar platforms and were restricted to gold nanoparticles. In this work, such methodologies are explored and expanded to plasmonic optical fibers. Thus, we study-experimentally and theoretically-the optical responses of optical fiber-doped gold or silver nanospheres and optical fibers coated with continuous gold or silver thin films. Both experimental and numerical results are analyzed with differentiation methods, using total variation regularization to effectively minimize noise amplification propagation. Consistent resolution improvements of up to 2.2x for both types of plasmonic fibers are found, demonstrating that deploying such analysis with any plasmonic optical fiber sensors can lead to sensing resolution improvements.
2023
Autores
Abdellatif, AA; Mhaisen, N; Mohamed, A; Erbad, A; Guizani, M;
Publicação
IEEE Internet of Things Journal
Abstract
2023
Autores
Fernandez-Jimenez, LA; Monteiro, C; Ramirez-Rosado, IJ;
Publicação
ENERGY REPORTS
Abstract
This article presents original probabilistic forecasting models for day-ahead hourly energy generation forecasts for a photovoltaic (PV) plant, based on a semi-parametric approach using three deterministic forecasts. Input information of these new models consists of data of hourly weather forecasts obtained from a Numerical Weather Prediction model and variables related to the sun position for future instants. The proposed models were satisfactorily applied to the case study of a real-life PV plant in Portugal. Probabilistic benchmark models were also applied to the same case study and their forecasting results compared with the ones of the proposed models. The computer results obtained with these proposed models achieve better point and probabilistic forecasting evaluation indexes values than the ones obtained with the benchmark models. (c) 2023 The Author(s). Published by Elsevier Ltd. This is an open access article under theCCBY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
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