Nowadays, fossil fuels are used in a clearly unsustainable way that can bring potentially catastrophic consequences. Electricity is currently delivered to end users by generation and energy transmission companies. Previous research shows that the development of modern circular economy sets a need for the re-orientation of socio and economic development of decentralized systems, including energy basis. In addition to being ecological, the use of renewable energy sources also has economic significance by contributing to energy independence. Citizens, industries, local and national authorities become interconnected within emerging novel renewable energy sourcing communities, through which they establish trade of energy and, most importantly, models of investing and reshaping the distribution of renewable energy. The modern portfolio management of renewable energy networking is aiming toward decentralized systems of trade, where the consumer becomes a producer (prosumer) within the network, itself managed by users. Excess energy produced in the micro-grid nets within the over-arching national and transnational energy grid should be accounted for and managed with blockchain technology for financial and structural security. The decentralization of the energy market requires the establishment of strict norms that will regulate the market and taxation of profits arising. The extensive literature review on blockchain in the energy sector reflects a very pragmatic and narrow approach to the topic, although it is evident that the distribution of energy within the blockchain would enable economic development through reducing cost and ensuring more secure energy trade. Blockchain technology embeds the related digital codes, in which information will be visible to all, but also secured from hacking and duplicating. However, there are challenges to this paradigm, not least the energy consumption of the extensive nodal mesh required to perform the necessary protocols. This paper aims to provide an overview of the application of blockchain technology and the need for the development of the regulatory system and of potential solutions to the challenges posed. By undertaking an energy consumption analysis of blockchain implementation from first electronic principles, which has not been constructed before in the literature, this paper’s conclusion stresses the future demand for reducing energy consumption and considers the latest findings in the quantum coupling of light signals as a potential for solving the enormous ledger duplication structure problem.

The bioeconomy aims at decreasing reliance on fossil fuels, preventing or reducing climate change, eliminating insecurity, and efficiently using resources; however, fierce controversy exists on conceivable pathways to accomplish these objectives. The transport sector alone, which encompasses all other industrial sectors, has grown with regard to its energy demand by 50% over the past 30 years. The aim of this paper is to promote a dialogue as to whether an economy based on biomass can be more sustainable than today’s existing economies, considering that the economy needs to expand and be boosted, while creating a cascading and recycling system. This semi-systematic review paper discusses four research questions based on findings from the last 20 years: (i) What are the crucial issues in the ongoing debate on the development of a sustainable bioeconomy concept? (ii) Where are the major conflicting points and focuses? (iii) How does the bioeconomy follow current urbanization and land-abandonment trends? (iv) How will the crisis linked to the COVID-19 pandemic change these previous scenarios? As it is not easy to currently predict which pathway will be the most effective, whether it be the one taken as of now or a specific novel pathway, this article recommends following a strategy that is diverse regarding its approaches to shaping the bioeconomy and further funding of renewable energy sources, along with the involvement of urban planning. In addition, conclusions are validated through a questionnaire completed by 51 experts in the field.

Purpose: – Lean management and Six Sigma concepts are derived from two different points of view, but it is evident that the role of employees is crucial in both concepts. The purpose of this paper is to survey which employees’ behaviour dimensions can lead organization to better concepts integration and how Lean Six Sigma activity contributes to employees’ performance. Design/methodology/approach: – Research methodology is designed to empirically check, on large sample of companies in multinational company supply chain, if employees’ factors are both predictor and response variables of Lean Six Sigma concept. To check stated hypothesis factor, reliability and multiple regression analysis are used. Findings: – The first finding of this study is that reward system and training are significant predictors of Lean Six Sigma activities. The second part of findings shows that Lean Six Sigma dimensions, such as Define, Measure, Analyze, Improve, and Control/Define, Measure, Analyze, Design, and Validate, 5S and Kanban positively influences employees’ performance, described by employee satisfaction, absenteeism, salaries and benefits, employees’ commitment and employee turnover rate. Research limitations/implications: – Poka-Yoke application is not found as a significant predictor of employees’ performance. Accordingly, to explore that interesting finding, possible future research topic is more detailed analysis of Poka-Yoke application in similar supply chains. A longitudinal analysis using structural equation is possible direction of future work, too. Practical implications: – This survey answers the need for Lean and Six Sigma unified methodology achievement in soft factors area and gives applicable results for companies in supply chain that produces low-volume, high-complexity products. Originality/value: – Original and valuable conclusion is that employees’ factors are both predictor and response variables of Lean Six Sigma concept application.

Purpose: The purpose of this paper is to investigate the influence of ISO 9001 quality improvement requirements in ISO 9001:2008, i.e. the corrective and preventive actions and internal audit, on customer satisfaction.Design/methodology/approach: For the purposes of the study, data were collected via a survey on 200 aerospace and transportation companies that belong to a Canadian multinational company supply chain. The relationships between the corrective and preventive actions and internal auditing, on the one hand, and customer satisfaction, on the other, were examined via the structural equation modeling technique.Findings: The major contribution of this study is that it has identified internal audit as the most influential continual improvement ISO 9001 requirement prior to the ISO 9001 transition phase, along with the corrective actions, while the preventive actions in the present formulation do not significantly influence customer satisfaction.Research limitations/implications: This study is based on a cross-sectional survey conducted on the supply chain level in the aerospace and transportation sector; hence, a longitudinal study is possible as a future research avenue. The generalizability of this study’s findings is limited to similar supply chains around a multinational company consisted of companies that have at least ISO 9001 standard, but also fulfill other industry-specific requirements. Also, findings are based mainly on quality managers’ attitudes, so future studies are recommended to examine other positions’ views, too.Practical implications: This research contributes to the literature and bridges the gap between theory and practice. It could be of value to both the certification bodies and the organizations that are interested in improving customer satisfaction by implementing ISO 9001 in the multinational supply chains context such as the aerospace and transportation sector.Originality/value: While the influence of the ISO 9001 standard on customer satisfaction has been the subject of prior research, this is the first time that the simultaneous effect of the corrective and preventive actions and internal auditing on customer satisfaction has been studied. The validity of the removal of preventive actions from ISO 9001:2015 has also been analyzed.

This study empirically examines the impact of quality tools on business performance in a sample of 119 Serbian industrial firms. Quality tools are classified into three primary groups according to their usage pattern by means of factor analysis and reliability testing: quality tools for reviewing current conditions, for analysing current conditions and for production planning and control. The relationships between these groups of quality tools and business performance measures were tested using stepwise regression analysis. Quality tools for reviewing current conditions have a significantly positive impact on most business performance dimensions, which is to be expected due to the fact that Serbia is in the phase between quality assurance and total quality management. Quality tools for analysing current conditions significantly influence productivity, while those for improvement have a positive effect on capacity expansion as a development performance measure.