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The purpose of this paper is to investigate the role of electromagnetic band‐gap (EBG) materials in the enhancement of antennas' directivity.

An analysis of a woodpile EBG material is performed, which points out its band properties. Woodpile cavities are then considered, obtained by interrupting the periodicity of the crystal. A woodpile cavity is then superimposed to a double‐slot antenna, resulting in a compound radiating device. The behavior of the EBG and of the radiating structure are simulated through Ansoft HFSS V11.

The woodpile EBG, when used as a cavity, acts as a spatial filter for the radiation coming from the antenna. The directivity of the new radiator is considerably increased, since now the illumination covers an area larger than the antenna.

Using new materials to obtain high‐directivity and compact radiators.

Retiring from work used to signify the end of paid employment and a transition to focus on life outside the workplace. From this perspective, the work-life interface may have no relevance for the retired. However, recent changes, particularly resulting from the COVID-19 pandemic, suggest that conceptualizations of both retirement and the work-life interface are more fluid, ambiguous, and complex. In this chapter, we first set the scene, reviewing how and why the traditional concept of retirement has changed so dramatically. Drawing on empirical data from contemporary media, we then consider how the current experience of the older worker and retiree are being reframed in neoliberal terms, emphasizing individual responsibility to remain not just fit and healthy but also productive, through a wide range of activities. We then focus on the impact of COVID-19, highlighting how pre-pandemic structural inequalities have been exacerbated, resulting in a range of responses in both levels of retirement and work by older people. We conclude by suggesting that retirement and its work-life interface need to recognize lived experience as dynamic, messy, and varied and implicated in wider structural features of both the economy and society.

This paper aims to propose a novel approach, in which the reference data for the flow angles calibration are obtained by using measurements coming from an inertial navigation system and an air data sensor.

This is obtained by using the Kalman filter theory for the evaluation of the reference angle-of-attack and angle-of-sideslip.

The designed Kalman filter has been implemented in Matlab/Simulink and validated using flight data coming from two very different aircraft, the Piaggio Aerospace P1HH medium altitude long endurance unmanned aerial system and the Alenia-Aermacchi M346 Master™ transonic trainer. This paper illustrates some results where the filter satisfactory behaviour is verified by comparing the filter outputs with the data coming from high-accuracy nose-boom vanes.

The methodology aims to lower the calibration costs of the air data systems of an advanced aircraft.

The calibration of air-data systems for the evaluation of the flow angles is based on the availability of high-accuracy reference measurements of angle-of-attack and angle-of-sideslip. Typically, these are obtained by auxiliary sensors directly providing the reference angles (e.g. nose-boom vanes). The proposed methodology evaluates the reference angle-of-attack and angle-of-sideslip by analytically reconstructing them using calibrated airspeed measurements and inertial data.

The purpose of this paper is to investigate the numerical aspects of the electromagnetic scattering of a plane wave by a set of buried cylinders.

The cylindrical wave approach is employed. The analytical model is implemented in a Fortran code. The numerical aspects of the technique are presented, with particular emphasis on the numerical evaluation of the integrals involved in the procedure.

The tool obtained allows a fast computation of the electromagnetic field scattered by an arbitrary disposition of circular cylinders below an interface. Comparisons with the finite element method are proposed, showing the very good agreement between the results obtained with the two different approaches.

The advantages of the proposed technique in terms of computational weight are explained. The method can be useful in a wide class of application, e.g. in the ground penetrating radar applications, microscopy, biomedical applications, etc.

Digital transformation is becoming a necessity for all organizations all over the world. The importance of digital transformation is not only applicable to the private sector but also extends to the public sector. Kuwait boasts the Kuwait Direct Investment Promotion Authority (KDIPA), a pivotal entity entrusted with the mission of spearheading investment promotion across diverse sectors. More importantly, the focus has been recently on investing in digital transformation technologies where their statistics show that 33% of their investment are in emerging technologies. However, the success of KDIPA was not a mere chance or coincidence where it is really attributed to the transformative leadership that it has. It started to invest in projects that develop the talents and skills of Kuwaitis to create sustainable development and bring innovative technologies to the state of Kuwait. This chapter provides an overview of digital transformation and the role of KDIPA and its transformative leadership in attaining the strategic development goals for a new Kuwait Vision of 2035.

This chapter frames the digital age transformation journey for sustainability from the lenses of transformation skills and competencies required for future work. It provides a synopsis of the digital transformation considering digital technologies, connecting digital transformation to future work and reflections on the new digital age to sustainability issues. In detail, this chapter comprehensively reviews digital technologies transformation skills, including digital skills and integrated skills for the digital economy linked to integrated skills. This chapter takes into consideration the possible effects from a competency point of view from the domains on issues like: global independence, trust, a shift in skills and ways of work, commitment to justice, improving the know-how, financial inclusion, data and data privacy that are critical imperatives for sustainability. Developing a digital economy requires integrated sustainable development competencies; this chapter considers combined skills for digital transformation in triple connecting points of human skills, business skills and digital building blocks skills to argue for sustainability. Because attaining Sustainable Development Goals (SDGs) requires input from different quotas globally, sustainable competencies are needed to ensure individuals work cohesively through new-age digital technologies. This chapter further highlights emerging competencies such as critical thinking, appreciative equity, open communication and acting on collective well-being as imperatives transforming digital disruptions. The final section of this chapter puts into perspective the implication of required digital technologies for the future of work and its significance on the need to reskill and retool. It concludes by reflecting on opportunities and challenges for crucial consideration towards creating a sustainable digital age.

Technological advancements are reshaping the tourism industry, necessitating the adaptation of business models through digital technology utilisation for intelligent, sustainable and inclusive tourism offerings. The diverse nature of tourism businesses, encompassing size, technology access, risk aversion, labour intensity, and more, presents a spectrum of challenges and opportunities for business model innovation (BMI) and digital transformation (DT) to maintain competitiveness. This study focuses on the core aspects of DT and BMI within the tourism sector, offering pivotal insights to aid tourism companies embarking on the intricate journey of DT and BMI in this evolving landscape.

The study conducts an extensive literature review to identify critical issues and pathways for tourism businesses pursuing DT and BMI. The review is focused on the challenges, opportunities, risks and imperatives that tourism organisations have to navigate in the current DT landscape to renew their business model.

The findings underscore the pressing need for tourism businesses to undergo a holistic DT. While digital technologies are reshaping the essence of tourism value chains, the transformation extends beyond technology adoption to encompass a profound renewal of organisational culture, competencies, structure, leadership and operational models. This paradigm shift is indispensable for crafting more innovative, sustainable and more inclusive tourism development. The paper also provides strategic recommendations and outlines future research directions to fortify the transformational journey of the tourism sector.

The paper provides key insights into supporting DT and BMI in tourism businesses, advancing a nuanced understanding of the multifaceted challenges and opportunities tourism organisations face in the digital age.

Living walls (LWs), vegetated walls with an integrated growth layer behind, are being increasingly incorporated in buildings. Examining plant characteristics’ comparative impacts on LWs’ energy efficiency-related thermal behavior was aimed, considering that studies on their relative effects are limited. LWs of varying leaf albedo, leaf transmittance and leaf area index (LAI) were studied for Antalya, Turkey for typical days of four seasons.

Dynamic simulations run by Envi-met were used to assess the plant characteristics’ influence on seasonal and orientation-based heat fluxes. After model calibration, a sensitivity analysis was conducted through 112 simulations. The minimum, mean and maximum values were investigated for each plant characteristic. Energy need (regardless of orientation), temperature and heat flux results were compared among different scenarios, including a building without LW, to evaluate energy efficiency and variables’ impacts.

LWs reduced annual energy consumption in Antalya, despite increasing energy needs in winter. South and west facades were particularly advantageous for energy efficiency. The impacts of leaf albedo and transmittance were more significant (44–46%) than LAI (10%) in determining LWs’ effectiveness. The changes in plant characteristics changed the energy needs up to ca 1%.

This study can potentially contribute to generating guiding principles for architects considering LW use in their designs in hot-humid climates.

The plant characteristics’ relative impacts on energy efficiency, which cannot be easily determined by experimental studies, were examined using parametric simulation results regarding three plant characteristics.

Digital platforms for the provision of food information-based services (FISs) represent a consolidated business with increasing revenue streams for entrepreneurs. Such platforms have transformed and clarified the nature of uncertainty and ambiguity inherent in the traditional food sector entrepreneurial processes. Anyway, a clear understanding of the value of digital platforms for FISs is not yet consolidated in the literature. With this paper, the authors try to fill this gap through a critical literature review of scientific research that combines knowledge on food consumer's behavior and user's knowledge behavior.

The authors carried out a critical literature review of scientific research combining knowledge of food consumer's and food information user's behavior. This allowed the identification of the main value components of FISs.

The authors propose a multidimensional framework for modelling the value proposition of digital platforms for FISs. Three main value dimensions have been identified: relevance, credibility, and accessibility. These dimensions concur with the consumer's perceived value of consumers in terms of benefits increase and cost reduction.

The research was intended to shed light on aspects characterizing consumers' perception of food information value. The authors put in evidence that the informational perspective of food communication is under-investigated. This study attempts to provide a holistic overview of the dimensions impacting on consumers' perception of the value of information for food consumers, opening new research perspectives.

The framework represents a tool for positioning food information offerings on the market, with the objective to analyze the value proposition of FISs according to a consumer perspective and to understand gaps of current offering of FISs. Moreover, it may support the design of a new generation of digital platform for food information provision, which would respond to consumers' expectations and information needs, highlighting emerging business opportunities for digital entrepreneurs.

Few research works provide a characterization of value proposition of digital platforms providing food information to consumers. In particular, to date, literature lacks of a holistic overview of the dimensions influencing consumer's perception of the information value of food communications.

Digital transformation (DT) has created a number of significant opportunities and related alterations in consumers' behaviours. However, consumers differ in adopting DT. There is still a need to investigate consumer's capabilities and his/her perception of other customers that supports or hinders the DT process. This study aims to investigate human thinking capabilities (critical thinking, holistic thinking and creative thinking) as drivers of two specific types of outcomes: DT barriers and/or DT nurture. In addition, this research also examines the linkage between human capabilities (three types of thinking) and other customers' perception. Finally, it postulates that other customers' perception drives DT barriers and/or DT nurture.

Applying to the public, private and international banking sectors, 273 questionnaires were collected. The collected data was analysed using AMOS as well as the PROCESS macro.

The results showed that human thinking capabilities have different effects on DT barriers and nurture. While critical thinking has a significant effect on DT barriers, both holistic thinking and creative thinking have a significant effect on DT nurture. Other customers' perception construct has a significant effect on both DT barriers and nurture. In addition, only holistic thinking has an effect on other customers' perception.

This study advances knowledge in three ways. Firstly, it examined DT barriers and nurture as variables from the customer's perspective. Secondly, it examined each human thinking capability on DT barriers and nurture, giving more insights. Thirdly, it studied human thinking capabilities as one of the main factors that might affect other customers' perception and DT barriers and nurture, while most previous studies focused only on other customers' perception's impact on DT barriers and nurture.