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This paper aims to propose an improved multifunctional control strategy for achieving real, reactive power flow control and the mitigation of power quality issues in grid integrated photovoltaic (GIPV) systems.

The paper proposes a dual stage, three phase, multifunctional GIPV system with modified instantaneous reactive power (IRP) theory-based and modified synchronous reference frame (SRF) theory-based control algorithms for reference template generation with continuous load power requirement tracking. The control structure is designed so as to impart virtual distribution static compensator functionality to the photovoltaic inverter. The dual mode operation in active filter and renewable power injection modes provides enhanced capability to the GIPV system. A comprehensive evaluation of the dynamic behaviour of the GIPV system is carried out for various conditions of irradiance and load under MATLAB/Simulink platform. The performance comparison is done considering an uncompensated system and the GIPV system with both proposed control algorithms.

The extensive simulation results demonstrate that the proposed modified SRF theory-based multifunctional control strategy shows superior performance in real and reactive power flow control; reduction in real and reactive burden of the utility grid; and regulation of dc bus voltage under varying scenarios of irradiance and load. Furthermore, there is improvement of grid power factor and reduction in total harmonic distortion of grid currents in compliance with the IEEE 519 standard even with highly non-linear loads at the point of common coupling.

The proposed modified SRF theory-based multifunctional controller offers a viable solution for power quality enhancement as well as the realization of effective real and reactive power flow control in GIPV systems. Thus, the penetration level of distributed generation can be increased in this era of global energy crisis.

This study aims to develop multifunctional, namely, superhydrophobic, flame-retardant and antibacterial, coatings over cotton fabric, using casein as green-based flame-retardant and silver nanoparticles as antibacterial agent by solution immersion method.

The cotton fabric is first coated with casein to make it flame-retardant. AgNPs synthesized using Cinnamomum zeylanicum bark extract is coated over the casein layer. Finally, stearic acid is used to coat the cotton to make it superhydrophobic. X-ray diffraction, transmission electron microscopy analysis and ultraviolet-visible spectroscopy are used to investigate the produced AgNPs. The as-prepared multifunctional cotton is characterized by scanning electron microscopy, energy dispersive X-ray analysis and attenuated total reflection-infrared studies. Flame test, limiting oxygen index test and thermogravimetric analyzer studies have also been performed to study the flame-retardant ability and thermal stability of treated fabric, respectively. The antibacterial effect of the coatings is evaluated by disc-diffusion technique. Water contact angle is determined to confirm the superhydrophobic nature of cotton fabric.

The outcomes of this study showed that the prepared multifunctional cotton fabric had maximum contact angle of greater than 150° with good flame retardancy, high thermal stability, greater washing durability and high antibacterial activity against the growth of Pseudomonas aeruginosa and Acinetobacter indicus. Additionally, the as-prepared superhydrophobic cotton showed an excellent oil–water separation efficiency.

The trilayered multifunctional cotton fabric has limiting washing durability up to 20 washing cycles. Treated functional fabric can be used as an antibacterial, therapeutic, water repellent and experimental protective clothing for medical, health care, home curtains and industrial and laboratory purposes.

The study brings out the robustness of this method in the development of multifunctional cotton fabrics.

Are entrepreneurial opportunities discovered or created? The debate around this question has crucial implications for successful organizational change management in the business world. The present conceptual paper transcends this debate by embedding the concept of the entrepreneurial opportunities within a Luhmannian systems – theoretical framework which accentuates the unique role of organization and change in the age of functional differentiation. The purpose of this paper is to show how the strategic navigation of the borders between function systems such as politics, science, education, religion, art, or, of course, economy leads to the discovery or creation new opportunities for both business and social entrepreneurship.

The paper combines Niklas Luhmann’s theory of social differentiation with Kim and Mauborgne’s Blue Ocean Strategy. The key argument is that the alternative regimes of social differentiation, such as segmentation, centralization, stratification, and functional differentiation, create distinct pools of entrepreneurial opportunities to be discovered, created, and exploited by adequate business models. (Business) Organizations, therefore, need to strategically adjust the amount of attention they devote to the different forms of social differentiation. The argument is buttressed with illustrative examples of business models related to the regime of functional differentiation.

A paradoxical finding is that the multifunctional business models which explicitly draw on the value creation potential of the most recent form of social differentiation, functional differentiation, remain little known even though they infuse business organizations with a unique capacity of new venture discovery and creation in the modern society.

Multifunctional business models have so far remained unexplored in entrepreneurship theory and practice. This paper develops a first strategic approach to the discovery or creation of both multifunctional business models and a broader framework of multifunctional organization models.

This paper aims to enhance the reliability of self-validating multifunctional sensors.

An effective fault detection, isolation and data recovery (FDIR) strategy by using kernel principal component analysis (KPCA) coupled with gray bootstrap and fault reconstruction methods.

The proposed FDIR strategy is able to the address fault detection, isolation and data recovery problem of self-validating multifunctional sensors efficiently.

A KPCA-based model which can overcome the limitation of existing linear-based models is used to achieve the fault detection task. By using gray bootstrap method, the position of all faulty sensitive units can be calculated even under the multiple faults situation. A reconstruction-based contribution method is adopted to evaluate the amplitudes of the fault signals, and the fault-free output of the faulty sensitive units can be used to replace the fault output.

The chapter is based on the Social Foundation project: ‘Digital Pathways to Growth: Competency’ conducted in the region of Zealand in Denmark. The process of creating a multifunctional semantic – a competency model – is unfolded. Informed by social system theory the semantic required to enable dialogue in a polycentric network is analysed. The participants are various small and medium-sized enterprises, across many occupations and tasks, different types of educational and training organisations as well as process consultants from various knowledge institutions, labour unions and industrial interest organisations. The model is designed through a participatory process to help this polycentric network of organisations to build competencies for the digitalisation ahead.

We argue that design thinking and engaged scholarship in the construction of a multifunctional semantics – such as the competency model – is useful both as a practical method and as a semantic research strategy informed by social system theory. The role played by design thinking when developing the competency model as a multifunctional semantic is concluded and the future research outlined.

The research generates knowledge of practical value for networked collaboration in educational ‘ecologies’ as the need increases for stronger links between education, business and research, as well as the involvement of social partners and civil society to increase Europe’s innovation capacity as advised by both the OECD and the EU.

This study aims to fabricate a multifunctional electromagnetic interference (EMI) shielding composite fabric with simultaneous high-efficiency photothermal conversion and Joule heating performances.

A multifunctional polypyrrole (PPy) hydrogel/multiwalled carbon nanotube (MWCNT)/cotton EMI shielding composite fabric (hereafter denoted as PHMC) was prepared by loading MWCNT onto tannin-treated cotton fabric, followed by in situ crosslinking-polymerization to synthesize three-dimensional (3D) conductive networked PPy hydrogel on the surface of MWCNT-coated cotton fabric.

Benefiting from the unique interconnected 3D networked conductive structure of PPy hydrogel, the obtained PHMC exhibited a high EMI-shielding effectiveness vale of 48 dB (the absorbing electromagnetic wave accounted for 84%) within a large frequency range (8.2–12.4 GHz). Moreover, the temperature of the laminated fabric reached 54°C within 900 s under 15 V, and it required more than 100 s to return to room temperature (28.7°C). When the light intensity was adjusted to 150 mW/cm², the PHMC temperature was about 38.2°C after lighting for 900 s, indicating high-efficiency electro-photothermal effect function.

This paper provides a novel strategy for designing a type of multifunctional EMI shielding composite fabric with great promise for wearable smart garments, EMI shielding and personal heating applications.

Cotton is one of the most common nature textile fiber that is widely used in clothing, bedding and decorative fields due to its comfort. However, the cellulosic cotton fiber has its own drawbacks. Cotton fiber belongs to flammable material with the limiting oxygen index (LOI) value about 18% that restricts its applications. Cotton fiber is easy to crease during the repeat wearing and laundering process that will influence the wearability. Therefore, it is very important to improve the flame retardancy and anticrease performance of cotton fabric.

In this study, flame retardant and anticrease multifunctional modifications of cotton fabric were conducted by one-step pad–dry–cure process using eco-friendly phytic acid and 1, 2, 3, 4-butanetetracarboxylic acid.

The results of limited oxygen index (LOI) values and vertical burning test indicate that the flame retardancy of modified cotton fabric was greatly improved. The LOI value of modified cotton fabric reached 30.8% when the usage of phytic acid was 12%. The crease recovery angle was over 250° of the modified cotton fabric revealing good anticrease performance.

This research provides a novel feasible cost-effective one-step method for the multifunctional modified cellulosic fiber using eco-friendly chemical agents.

The aim of the study is to analyse the value creation processes in multifunctional wineries. Specifically, the paper poses the following research questions: can the creation of public goods (i.e. multifunctionality) open up new paths of value creation for wineries? And if so, can multifunctionality be only compensated through policy instruments? Or, is there a form of market compensation?

An empirical analysis was carried out on selected wineries that sell directly. The study implemented the “value portfolio” model that identifies specific variables, both internal and external to the farm, which contribute to the value creation. The methodology adopted is a structural equation modeling (SEM) approach that offers a theoretical basis for developing an understanding of the relationships between group of variables.

The empirical analysis confirms the assumptions developed. Indeed, the localized public goods generated by multifunctional farms can benefit from compensation on the market through the direct sale of products and services.

The study’s findings are quite innovative in the field of agricultural economics and open the way for interesting policy implications.

Aims to present a simple circuit for the realization of electronically tunable ideal grounded inductor, which consists of two current controlled conveyors along with a grounded capacitor. Also its application for realization of multifunctional filter is demonstrated.

Multifunctional filter (low pass, band pass and high pass filters) is designed using proposed grounded inductor realization which provides standard responses without any constrains in terms of matching conditions.

The multifunctional filter designed using the proposed realization has many attractive features such as low component count, high‐Q, low sensitivity performance, independent Q‐tuning of the filter without affecting its pole frequency.

Simulation results show excellent performance with low power consumption of 1.87 mW at ±2.5 supply voltage.

The purpose of this paper is to improve anti-corrosion, self-cleaning, hydrophily and sterilization properties of aluminum (Al) alloy.

A multifunctional coating for medical external application on Al alloy had been prepared by anodic oxidation, electrolytic coloring silver (Ag) and sealed in boiling water with nano-sized titanium dioxide (TiO₂) particles. The multifunctional coating was characterized by X-ray diffraction, scanning electron microscope and energy dispersive spectroscopy. Other properties such as corrosion-resistance, wipe-resistance, hydrophilicity, photochemical decomposition and bactericidal antiseptic effect were also investigated.

The results demonstrate that a golden film with multi-function had been obtained for medical external application. The main phase of coating is amorphous Al₂O₃, and nano-sized silver particle is electrodeposited in bottom of film hole, while nano-sized TiO₂ is sealed on the external surface of coating. The properties of film, such as anti-corrosion, self-cleaning, hydrophily, sterilization are better than those of Al alloy substrate.

Considering about this usage for medical external application, a multifunctional coating which has the properties such as decoration, anti-corrosion, sterilize and self-cleaning has been first prepared on Al alloy surface in the study. This coating would meet the requirements of medical external using and provide theoretical and practical foundation about Al alloy for medical use.