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1 – 3 of 3Shi-Qi Huang, Wen-Sheng Wu, Li-Ping Wang and Xiang-Yang Duan
This paper aims to study the removal of wide-stripe noise in hyperspectral remote sensing images. There is a great deal of stripe noises in short-wave infrared hyperspectral…
Abstract
Purpose
This paper aims to study the removal of wide-stripe noise in hyperspectral remote sensing images. There is a great deal of stripe noises in short-wave infrared hyperspectral remote sensing image, especially wide-stripe noise, which brings great challenge to the interpretation and application of hyperspectral images.
Design/methodology/approach
To remove the noise and to reduce the impact based on in-depth study of the mechanism of the stripe noise generation and its distribution characteristics, this paper proposed two statistical local processing and moment matching algorithms for the elimination of wide-stripe noise, namely, the gradient mean moment matching (GMMM) algorithm and the gradient interpolation moment matching (GIMM) algorithm.
Findings
The experiments were carried out with the practical short-wave infrared hyperspectral image data and good experiment results were obtained. Experiments show that both can reduce the impact of wide-stripe noise, and the filtering effect and the application range of the GIMM algorithm is better than that of the GMMM algorithm.
Originality/value
Using new methods to deal with the hyperspectral remote sensing images, it can effectively improve the quality of hyperspectral images and improve their utilization efficiency and value.
Details
Keywords
Zhao-ge Liu, Xiang-yang Li and Li-min Qiao
Process mining tools can help discover and improve the business processes of urban community services from historical service event records. However, for the community service…
Abstract
Purpose
Process mining tools can help discover and improve the business processes of urban community services from historical service event records. However, for the community service domains with small datasets, the effects of process mining are generally limited due to process incompleteness and data noise. In this paper, a cross-domain knowledge transfer method is proposed to help service process discovery with small datasets by making use of rich knowledge in similar domains with large datasets.
Design/methodology/approach
First, ontology modeling is used to reduce the effects of cross-domain semantic ambiguity on knowledge transfer. Second, association rules (of the activities in the service processes) are extracted with Bayesian network. Third, applicable association rules are retrieved using an applicability assignment function. Further, the retrieved association rules in domains with large datasets are mapped to those with a small dataset using a linear programming method, with a heuristic miner being adopted to generate the process model.
Findings
The proposed method is verified based on the empirical data of 10 service domains from Beidaihe, China. Results show that process discovery performance of all 10 domains were improved with the overall robustness score, precision, recall and F1 score increased by 13%, 13%, 17% and 15%, respectively. For the domains with only small datasets, the cross-domain knowledge transfer method outperforms popular state-of-the art methods.
Originality/value
The limitations of sample sizes are greatly reduced. This scheme can be followed to establish business process management systems of community services with reasonable performance and limited sample sizes.
Details
Keywords
Emilio Greco, Elvira Anna Graziano, Gian Paolo Stella, Marco Mastrodascio and Fabrizio Cedrone
Employees in the private, public, and third sectors have experienced an increase in stress over the years. Amongst the sectors, people working in hospitals and other healthcare…
Abstract
Purpose
Employees in the private, public, and third sectors have experienced an increase in stress over the years. Amongst the sectors, people working in hospitals and other healthcare facilities were put under severe stress during the COVID-19 pandemic. Indeed, the World Health Organisation has clearly stated that defending people's mental health at this particular time of restless pandemic growth is an absolute necessity. The purpose of this article is to assess the perceived work-related stress (WRS) of healthcare workers (HCWs) as a result of the spread of COVID-19, as well as how a leadership role can help to reduce WRS.
Design/methodology/approach
Based on a multiple case study approach applied to two Italian health-care facilities, the questionnaire results were subjected to a regression analysis.
Findings
The results show an association in HCWs between the perception of supportive leadership and the perception of negative psychosocial risks whose exposure can lead to manifestation of WRS during COVID-19 pandemic.
Originality/value
The study addresses the role that the perception of supportive leadership can play in reducing exposure to occupational psychosocial risks in a sample of healthcare professionals.
Details