Search results

The purpose of this paper is to investigate the impact of control strategy selection on the power performance of wave energy converters for different ratings of the Power Take‐Off (PTO) system.

The case of a point absorber equipped with an all‐electric PTO is considered. The effect of control techniques and electrical generator design is analyzed from a theoretical standpoint and then verified through integrated hydrodynamic‐electric simulations.

It has been proved that control parameters that maximize the power extraction from the waves can be derived based on the power and torque constraints imposed by the electrical machine.

An optimized and integrated approach to the control strategy selection and generator design for point absorbers has been presented, which maximizes the electric power generation from sea waves under real conditions and represents a good trade‐off for the PTO from both the technical and the economic standpoint.

The purpose of this paper is to quantify the impact of the constraints of the power take-off system (PTO) on the power extraction of a point absorber wave energy converter (WEC). Such constraints include power, torque and maximum stroke limitations. Two different concepts, unidirectional and bidirectional point absorbers, are analysed, which both are relevant for practical applications in the wave energy industry.

The two different cases of unidirectional and bidirectional point absorbers are analysed and directly compared. Moreover, a simplified control strategy is considered for the point absorber, which is based on a constant torque reference. The WEC performance is first evaluated in selected sea states and then the analysis is extended to assess the impact of the different solutions on the expected yearly wave energy production of the point absorber, when deployed at a specific location. The European Marine Energy Center (EMEC) is selected as the target site for the analysis.

The analysis was performed in selected sea states and then it was extended to all the sea conditions occurring at the EMEC test site. The comparison between unidirectional and bidirectional operated devices suggested a clear superiority of the latter, ensuring similar power extraction at the expense of a halved required torque by the PTO. Moreover, a selective control strategy was implemented, and the results showed an increase in yearly energy production for the bidirectional device.

The study proved the importance of including the actual PTO constraints in the preliminary power assessment in order to avoid unrealistic overestimation of the expected power performance.

The paper quantifies the power performance obtained with the application of such control strategy considering both unidirectional and bidirectional point absorbers. This analysis and comparison is extremely relevant since both unidirectional and bidirectional devices are reaching the market.

Information security awareness (ISA) mainly refers to those aspects that need to be addressed to effectively respond to information security challenges. This research used focus groups to empirically investigate the main ISA dimensions that emerge from the Italian public health-care sector. This study aims to identify the most critical dimension of ISA and to evaluate the diffusion and maturity of information security policies (ISPs) of health-care infrastructure and training programs.

This research adopted a qualitative research design and focus groups as a research methodology. Data analysis was conducted using the NVIVO 14 software package and followed the principles of thematic analysis.

The focus group results highlighted that health-care personnel find it difficult to comply with the main ISA dimensions, a situation that leads to risky behaviors. Password management, data storage and transfer and instant messaging applications emerged as the most critical of the main ISA dimensions in the context of this research. It also transpired that ISPs are not all-encompassing as they mainly focus on privacy problems but neglect security concerns. Finally, training programs are not fully implemented in the investigated context, thus undermining their positive enhancing role for ISA.

The public health-care sector emerged as a critical yet still under-investigated context. The need for an in-depth investigation of organizational sciences approaches to overcoming information security challenges is also recommended in several prior research studies.

Due to the evolution of the health-care scenario and the growing role of the primary care setting, the distribution processes of health technologies will be more and more in demand in the near future. This paper aims to investigate this theme, analyzing the performance, strengths and weaknesses of the current distribution practices, with the ultimate overarching aim to improve the provision of the primary care services.

The research framework is twofold. First, a tool to monitor the economic/quantitative performance of the distribution models was designed; second, the tool was applied to measure the performance of distribution models of absorbent devices for incontinence adopted by Local Health Authorities (LHA) in Lombardy Region (Italy). Quantitative data were collected by LHAs (from 2012 to 2016) and compared through data-benchmarking. Qualitative data from interviews and focus groups complemented the outcomes.

Two main distribution models were investigated: distribution through pharmacies and home delivery. Results show that there is no winning/preferable model in terms of economic/quantitative performance and service quality level, but a counterbalanced combination of strengths and weaknesses exists. Moving from the highlighted weaknesses and building on the strengths, an alternate distribution model is proposed for testing.

The present study approaches the theme of primary care services with a holistic approach, filling a literature gap. It also provides practitioners with a tool of performance analysis and management and real data, applicable also in international contexts. The collected real-world data also gives insights on the area of the quality of care, with particular reference to the patients’ experience. As a lesson learned, policymakers and the National Healthcare Service should re-think their current distribution models/practices in the light of the highlighted criticisms and opportunities for improvement.

This study aims to analyze the managerial levers previously considered in literature in the setting of the provision of primary care and community services (in particular for patients with long-term conditions being treated also at home) as well as those scarcely explored that could potentially be adopted in the future.

This study was a structured literature review. The authors retrieved papers, published from 2005–2020, from electronic databases (i.e. ABI/INFORM Complete, Jstor, PubMed and Scopus). Each selected paper was assigned to a framework category, and a thematic analysis was performed.

Topics scarcely explored in literature were related to logistics/supply chain, economic evaluations, performance management and customer satisfaction. Some papers embraced more than one management topic, confirming the multidisciplinary nature of territorial healthcare services. The majority of research, however, focused on only one aspect of primary care services, and a lack of an integrated view regarding the provision of those services emerged.

This study represents a first attempt to rationalize the fragmented body of knowledge on the topic of the provision of primary and community care services. This study enabled some light to be shed on the managerial levers already explored previously in literature and also identifies a number of trajectories for future research.