bluuebunny/crossref_metadata_2025 huggingface dataset:
Vegetative Propagation and ISSR-Based Genetic Identification of Genotypes of Ilex aquifolium ‘Agrifoglio Commune’
Authors: Tsaktsira Maria , Chavale Eleana , Kostas Stefanos , Pipinis Elias , Tsoulpha Parthena , Hatzilazarou Stefanos , Ziogou Fotios-Theocharis , Nianiou-Obeidat Irini , Iliev Ivan , Economou Athanasios , Scaltsoyiannes Apostolos
Published: September 2021

The market demand for interesting varieties and cultivars of Ilex aquifolium necessitates the exploration and sustainable exploitation of plant individuals thriving in nature without human care. In this work, an effort was made to develop a simple and reliable protocol for vegetative propagation of I. aquifolium plants, with desirable-for-market characteristics, grown in a mountain area of Halkidiki, Greece, and at the same time to proceed with their genetic identification using molecular markers. From these plants, new plants were vegetatively produced which afterward were used as stock plants for providing the needed shoot cuttings for the experiments of rooting and leaves for their genetic analysis. Factors studied in formulating a propagation protocol included the season of cutting collection and the application of 0.2% 1-naphthaleneacetic acid (NAA), as well as the type of shoot cuttings (terminal, subterminal) and the application of auxin. It was found that application of NAA was crucial for rooting response and number of roots formed, whereas the season effect was not significant on rooting. Terminal cuttings treated with 0.2% NAA exhibited the highest rooting percentage (100%) and formed abundant roots (25.7) compared to subterminal ones. All rooted cuttings, after being potted and transferred to acclimatization greenhouse, were successfully hardened. In the spring of the next year, the produced plants blossomed abundantly and formed fruits (bright red berries) presenting their characteristic ornamental appearance that was maintained until Christmas. For the identification procedure, the genotypic profile of the stock plants was also investigated by inter-simple sequence repeat (ISSR) genetic analysis, revealing that they were genetically the same both among themselves and when compared with a certified I. aquifolium ‘Agrifoglio Commune’ individual, but they differed genetically from I. aquifolium ‘Argentea Marginata’ and I. aquifolium ‘Hellas’.
Factors Predicting Individuals’ Behavioural Intentions for Choosing Cultural Tourism: A Structural Model
Authors: Platania Silvia , Woosnam Kyle Maurice , Ribeiro Manuel Alector
Published: September 2021

Drawing from the theory of self-regulation and a model of goal-directed behaviour, this study examines the determinants (i.e., attitudes, subjective norms, perceived behavioural control, desire, negative WOM coping strategies, and avoidance coping strategies) of visitors’ intentions to engage in cultural tourism within Sicily. Based on a sample of 469 visitors, the results revealed that 12 of the 14 proposed hypothesised direct effects were significant in explaining behavioural intentions to choose a cultural holiday. As for indirect effects, negative WOM coping strategies served as a more salient mediator in the model, as opposed to avoidance coping strategies.
Environmental and Economic Life Cycle Assessment of Recycled Aggregates Concrete in the United Arab Emirates
Authors: Alzard Mohammed H. , El-Hassan Hilal , El-Maaddawy Tamer
Published: September 2021

This paper studies the potential environmental and economic impact of replacing natural aggregates (NA) with recycled aggregates (RA) in the production of different sustainable concrete mixes in the United Arab Emirates (UAE). A life cycle assessment (LCA) was carried out according to the methodology proposed by the international standards of the series ISO 14040. The performance of concrete mixes having a similar design compressive strength was evaluated. Results showed that the inclusion of steel fibers (SF) led to an increase in the global warming potential (GWP), whereas mixes with cement replacement by fly ash, slag, or microsilica recorded a reduction in GWP. Furthermore, SF-reinforced mixes created with 100% RA were at least three times more expensive than the NA-based control mix, while the cost of those with cement replacement by mineral additives was generally similar to that of the control. Material transportation was found to be a main contributor to the environmental and economic impacts, only second to cement, and its contribution increased with longer distances and steel fiber incorporation and decreased with RA replacement. To integrate these individual measures and select optimum mixes for various applications, multifunctional performance indices were developed. Research findings highlight the possibility to fully replace NA with RA (100%) while maintaining the performance and improving the economic and environmental impacts of concrete produced in the UAE.
The Field of “Public Health” as a Component of Sustainable Development—Poland Compared to the European Union
Authors: Strzelecka Agnieszka
Published: September 2021

The objective of the article is to analyse selected indicators of sustainable development in the field of “public health”, especially those related to health and health-related inequalities. The article focuses on the analysis of indicators in the field of “public health” presented by Eurostat. These indicators were presented in terms of averages and medians. Moreover, the paper indicates the amount of funds allocated for prevention in health care. In addition, the cluster method was used to identify EU countries similar to each other in terms of the leading indicator of sustainable development (SD). The study was conducted using annual data for 2010–2019 for Poland as compared to other EU countries. The study used data from the Eurostat and OECD databases. In almost all of the analysed countries, in relation to the demographic and health situation, there is a close link between the financial situation, health and inequalities in health-related fields. Patients’ sense of safety has decreased in Poland, which is the result of the growing consumption of health services and emerging problems with the availability of health care services as well as environmental pollution. Among others, the percentage of people with health problems and low income has increased. Although the percentage of unmet needs resulting from income inequalities has decreased over the past year in the analysed groups of countries, it is still high in Poland. The low level of expenditure on prevention makes these difficulties even more severe. In summary, capturing changes in indicators describing public health in the context of its impact on sustainable development plays a key role in balancing out inequalities in the EU countries and in managing a common policy.
Evaluating the Service Operating Efficiency and Its Determinants in Global Consulting Firms: A Metafrontier Analysis
Authors: Park Gowangwoo , Lee Seok-Kee , Choi Kanghwa
Published: September 2021

Knowledge consulting services are one of the fastest growing fields in the knowledge service industry since the 2010s and have been emerging as a core area of the knowledge economy. Accordingly, consulting services are actively sought and provided in various fields, including business strategy and management, accounting, and ICT, and global consulting firms have experienced rapid growth. However, previous research evaluating the performance or service quality of knowledge consulting services is relatively scarce. In particular, there are barely any studies that apply the data envelopment analysis (DEA) model to measure the relative operating efficiencies of consulting firms in the global consulting service field. This study measured the operating efficiency of 27 global consulting firms using DEA. As global consulting firms are managed differently depending on the characteristics of the country in which they operate, the 27 global consulting firms were classified into three groups by region (USA, Europe, Asia) to measure their meta-efficiency (ME), group efficiency (GE), and technology gap ratio (TGR) and identify the causes of inefficiency at global consulting firms. The contextual variables within consulting firms that affect efficiency were analyzed using Tobit regression. Based on the analysis results, this study suggests strategies for enhancing the operating efficiency and realizing sustainable growth in global consulting firms.
Role of Tourism in Promoting Geothermal Energy: Public Interest and Motivation for Geothermal Energy Tourism in Slovenia
Authors: Pavlakovič Barbara , Demir Milica Rančić , Pozvek Nejc , Turnšek Maja
Published: September 2021

From household geothermal heat pumps to industrial geothermal heating and electricity production, geothermal energy is one of the most promising future climate change mitigation areas. This paper aims to analyse the potential role that the tourism industry has in the promotion of geothermal energy. Although general knowledge and understanding of geothermal energy is often relatively low, geothermal energy tourism has the potential to encourage the public to use and learn about geothermal energy and its applications. The paper first provides a theoretical conceptualisation of geothermal energy tourism at the energy production level and energy usage level. Empirical results from an online survey amongst a sample of the Slovenian population show that there is a reasonably strong interest in geothermal energy tourism, correlating with the public image of geothermal energy. The study furthermore identified three main motivational factors for energy tourism: the first is “Knowledge,” followed by “Having fun,” with the lowest level on the motivational factor being “Self-recognition.” The paper finally provides future recommendations on geothermal energy tourism as a tool for wider public acceptance but also knowledge on the potential risks of geothermal energy as a sustainable energy source.
Adoption of Ubiquitous CRM for Operational Sustainability of the Firms: Moderating Role of Technology Turbulence
Authors: Chatterjee Sheshadri , Chaudhuri Ranjan , Galati Antonino , Vrontis Demetris
Published: September 2021

Ubiquitous CRM (UCRM) enhances customer relationship management. It can sense customer needs and demands, to which firms can respond quickly. Therefore, UCRM helps to improve a firm’s agility. There is a growing interest among researchers and practitioners to understand how the adoption of UCRM impacts the sustainability of firms’ operations, but not many studies have investigated this issue. In this context, the aim of this study is to examine how firms’ absorptive capacity and dynamic capability could impact the adoption of UCRM to influence the operational sustainability of the firms and their performance. The study also investigates the moderating role of technology turbulence on the relationship between a firm’s operational sustainability and its performance. Using absorptive capacity theory and dynamic capability view theory and reviewing the existing literature, we developed a conceptual model. The model was then validated using a structural equation modeling technique considering 309 usable respondents from different firms that use UCRM for their operational activities. The study found that firms’ absorptive capacity and dynamic capability significantly and positively impact the adoption of UCRM, which in turn significantly and positively impacts firms’ operational sustainability and improves their performance. The study also shows that there is a significant moderating role of technology turbulence on the relationship between operational sustainability and firm performance.
Factors Affecting the Acceptance of Online Learning among the Urban Poor: A Case Study of Malaysia
Authors: Azhar Nornadia , Wan Ahmad Wan Fatimah , Ahmad Rohiza , Abu Bakar Zainab
Published: September 2021

Education is an avenue of gaining knowledge and skills that will, in turn, support economic growth. Therefore, as online learning platforms are abundantly available in Malaysia, the urban poor in the Klang Valley have a means of improving their knowledge and skills to generate more income. However, online learning requires technical readiness. As such, this study examined the factors affecting the acceptance of online learning among the urban poor in Malaysia. An acceptance model was developed by integrating the constructs of the unified theory of acceptance and use of technology (UTAUT) with factors that influence the perceived value of online learning among the urban poor. To assess the reliability of these factors, 293 respondents participated in an online survey. SmartPLS 3.0 was then used to analyse the collected data. We found that performance expectancy (PE), facilitating conditions (FC), and perceived value (PV) positively influenced the behavioural intention to use (BI) online learning. Therefore, the findings of this study provide an understanding of the value and vital factors that impact the acceptance of online learning among the urban poor in the Klang Valley.
Managing Circular Business Model Uncertainties with Future Adaptive Design
Authors: Nyström Thomas , Whalen Katherine A. , Diener Derek , den Hollander Marcel , Boyer Robert H. W.
Published: September 2021

Designing products that can adapt to changes over time is crucial for managing product-related business risks in circular business models. However, there is limited circular economy research on how product adaptivity can contribute to more circular products and business models, especially in the early phases of business development and design. To address this research gap, this conceptual paper builds on the adaptable design concept and incorporates ideas from research on circular business models and circular design literature. It proposes a framework we collectively term “Future Adaptive Design” to help manage product-related business risks in circular business models and investigates related design strategies for product-based companies aiming to adopt circular business models.
The Evolution of Multifamily Housing: Post-Second World War Large Housing Estates versus Post-Socialist Multifamily Housing Types in Slovenia
Authors: Sendi Richard , Kerbler Boštjan
Published: September 2021

The academic discourse on post-Second World War (post-WW2) multifamily housing complexes has mostly focused on their negative aspects, related, especially, to their high population densities, poor quality of construction and social problems, due to the dominance of low-income residents. In reaction to these and other negative characteristics, alternative multifamily housing types started to emerge, first in Western European countries in the 1970s, and later in Eastern European countries, following the adoption of the market economy system at the beginning of the 1990s. The transformation that has occurred in mass housing types has been particularly distinct in Eastern European countries. Motivated by the lack of focused analyses of the important characteristics of these transformations, this article adopts a rare approach to the mass housing debate by focusing on examining the merits of post-WW2 large housing estates as compared to those of the post-socialist era. With a focus on Slovenia as a case study, a comparative analysis is performed by conducting a detailed review of the literature and other relevant sources. The comparative analysis shows that post-socialist multifamily housing types have many advantages over the post-WW2 housing estates, a finding that leads us to deduce that the transformations in mass housing typologies that have occurred in Slovenia (and other Eastern European countries) may have serious implications on the future of large housing estates. It is thus suggested in the conclusion that suitable regeneration policies need to be urgently implemented in post-WW2 housing estates in order to create more attractive living environments and prevent the potential degradation of these neighborhoods, which would, in turn, result in spatial residential segregation with concentrations of low-income households in post-WW2 housing estates.
Conservation Status of Milkcaps (Basidiomycota, Russulales, Russulaceae), with Notes on Poorly Known Species
Authors: Leonardi Marco , Comandini Ornella , Sanjust Enrico , Rinaldi Andrea C.
Published: September 2021

Mycological conservation has finally come of age. The increasingly recognized crucial role played by fungi in ecosystem functioning has spurred a wave of attention toward the status of fungal populations across the world. Milkcaps (Lactarius and Lactifluus) are a large and widespread group of ectomycorrhizal basidiomycetes; besides their ecological relevance, many species of milkcaps are of socio-economic significance because of their edibility. We analysed the presence of milkcaps in fungal Red Lists worldwide, ending up with an impressive list of 265 species assessed in various threat categories. Lactarius species are disproportionally red-listed with respect to Lactifluus (241 versus 24 species). Two species of Lactarius (L. maruiaensis and L. ogasawarashimensis) are currently considered extinct, and four more are regionally extinct; furthermore, 37 species are critically endangered at least in part of their distribution range. Several problems with the red-listing of milkcaps have been identified in this study, which overall originate from a poor understanding of the assessed species. Wrong or outdated nomenclature has been applied in many instances, and European names have been largely used to indicate taxa occurring in North America and Asia, sometimes without any supporting evidence. Moreover, several rarely recorded and poorly known species, for which virtually no data exist, have been included in Red Lists in some instances. We stress the importance of a detailed study of the species of milkcaps earmarked for insertion in Red Lists, either at national or international level, in order to avoid diminishing the value of this important conservation tool.
Industry 4.0 and Smart Data as Enablers of the Circular Economy in Manufacturing: Product Re-Engineering with Circular Eco-Design
Authors: Vacchi Marco , Siligardi Cristina , Cedillo-González Erika Iveth , Ferrari Anna Maria , Settembre-Blundo Davide
Published: September 2021

The digital transformation of manufacturing firms, in addition to making operations more efficient, offers important opportunities both to promote the transition to a circular economy and to experiment with new techniques for designing smarter and greener products. This study integrates Industry 4.0 technologies, smart data, Life Cycle Assessment methodology, and material microstructural analysis techniques to develop and apply a circular eco-design model that has been implemented in the Italian ceramic tile manufacturing industry. The model has been initially adopted in a simulation environment to define five different scenarios of raw material supply, alternative to the current production one. The scenarios were then validated operationally at laboratory scale and in a pilot environment, demonstrating that a proper selection of raw material transport systems significantly improves the environmental performance of the ceramic product. Both the results of the laboratory tests and of the pre-industrial experiments have demonstrated the technological feasibility of the solutions identified with circular eco-design, enabling the re-engineering of the ceramic product as the fifth of the 6Rs of the circular economy.
Sustainable Education: Using Social Networks in Education for Change
Authors: Díaz-Pareja Elena M. , Llorent-Vaquero Mercedes , Cámara-Estrella África M. , Ortega-Tudela Juana M.
Published: September 2021

Creating societies of the future goes hand in hand with promoting sustainable education and, therefore, universities must train educators who, through their own professional development, put into practice methodologies that are active, participative, and focused on the overall development of their students. The use of methodologies like Design Thinking and the use of social networks generate learning dynamics that bring into play key competences in the development of dedicated future educators. In this study, 156 students from Education degrees at the University of Jaen analyze how the use of these methodologies supports the learning process in dimensions such as creativity, motivation, communication, and involvement in learning, among others. The results shows that all dimensions correlate positively, and that the benefits derived from the use of these methodologies are perceived by students as greater than the effort required to put them into practice.
Editorial: Lessons on Building More Sustainable Rural Societies: Youth and Mobility
Authors: Gasparovic Slaven , Prieto-Flores Òscar
Published: September 2021

Mobility is a fundamental and important characteristic of human activity: it fulfils the basic need of going from one location to the other in order to partake in employment, kinship, and education [...]
Towards Comparable Carbon Credits: Harmonization of LCA Models of Cellulosic Biofuels
Authors: Rinke Dias de Souza Nariê , Colling Klein Bruno , Ferreira Chagas Mateus , Cavalett Otavio , Bonomi Antonio
Published: September 2021

Decarbonization programs are being proposed worldwide to reduce greenhouse gas (GHG) emissions from transportation fuels, using Life Cycle Assessment (LCA) models or tools. Although such models are broadly accepted, varying results are often observed. This study describes similarities and differences of key decarbonization programs and their GHG calculators and compares established LCA models for assessing 2G ethanol from lignocellulosic feedstock. The selected LCA models were GHGenius, GREET, JRC’s model, and VSB, which originated calculators for British Columbia’s Low Carbon Fuel Standard, California’s Low Carbon Fuel Standard, Renewable Energy Directive, and RenovaBio, respectively. We performed a harmonization of the selected models by inserting data of one model into other ones to illustrate the possibility of obtaining similar results after a few harmonization steps and to determine which parameters have higher contribution to closing the gap between default results. Differences among 2G ethanol from wheat straw were limited to 0.1 gCO2eq. MJ−1, and discrepancies in emissions decreased by 95% and 78% for corn stover and forest residues, respectively. Better understanding of structure, calculation procedures, parameters, and methodological assumptions among the LCA models is a first step towards an improved harmonization that will allow a globally accepted and exchangeable carbon credit system to be created.
Effect of Environmental Management Practices and Sustainability on Some Selected Manufacturing Firms in South East Nigeria
Authors: Obamen Joseph , Omonona Solomon , Oni Olabanji , Ohunyeye Olamide Felix
Published: September 2021

The manufacturing sector in South East Nigeria has many challenges concerning the incorporation of sustainability into the corporate strategies and operations of the industry, given its extractive nature and the numerous social and environmental impacts related to production activity. Attaining organizational sustainability requires the implementation of environmental management practice tools that create long-term value by embracing opportunities and managing risks derived from economic, environmental, and social developments. Therefore, this study investigated the effect of environmental management practice tools on the sustainability of manufacturing organizations. The goal of the study was to determine the relationship between environmental management practice tools and sustainability. A survey design was used for this study. A total of 363 questionnaires were distributed to the employees of the manufacturing firms, which included managers, supervisors, and line staff. The data collected were analyzed using Principal Component Analysis (PCA). Primarily, the study established that environmental management practice tools were significantly and positively related to sustainability. Thus, the study concluded that environmental management practice tools contribute significantly and positively to firms’ social, economic, and environmental sustainability. Additionally, the result of this study underlines the significance to manufacturing firms of carrying out environmental management practices. The ramifications are that manufacturing firms attempting to assert sustainability through EMP should have related knowledge with EMP. Furthermore, their environmental advantages will not convert into sustainability. The study adds to the body of knowledge by giving experimental pieces of proof identifying the interrelationships between EMP and sustainability.
Conditions and Determinants of Distance Education for Students during the COVID-19 Pandemic—Evaluation in the Kuyavia-Pomerania Region in Poland
Authors: Zajdel Małgorzata , Michalcewicz-Kaniowska Małgorzata , Modrzyński Paweł , Komarnicka Anna , Modrzyńska Joanna
Published: September 2021

This research project is the first and only comprehensive regional study in Poland including all teachers and headteachers of primary and secondary schools. The aim of the study was to determine the factors influencing the learning process carried out remotely and to examine the potential of this form of education for primary and secondary school students and its future use to improve the quality and accessibility of education. An important aspect of this research was also the assessment of the respondents’ capabilities and competences in the area of operating and using digital tools in the educational process. During the COVID-19 pandemic, a total of 9070 teachers took part in this study. The method of data collection was an online survey. The research instrument consisted of a survey questionnaire. The survey was conducted electronically using tools provided by Google. The following methods were used to evaluate the data: count tables, which allowed for data exploration; a graphical method—cross-sectional analysis; and individual correlation analysis, which allowed for preliminary data evaluation. The results obtained within the research process conducted allowed us to achieve our goals. According to 42.4% of the teachers surveyed, remote learning is a good alternative to traditional teaching. The study also confirmed, inter alia, the presence of a correlation between technical conditions of classes and specific forms and levels of education, with 49.7% of respondents indicating that remote learning depends mainly on the quality of technical parameters, including a good or very good Internet connection. The biggest advantages of e-learning, as indicated by the respondents, were the possibility of working from home, conveniently sharing educational materials, and utilising additional teaching aids. Health issues and long times spent in front of the computer were highlighted as the greatest drawbacks of this teaching method. The results also showed that, as the age of the teachers increases, the acceptance and trust in distance learning activities increases while the fear of using this form of student learning decreases. This study lays the foundation for designing systemic, nationwide solutions, and thus, the authors are planning to continue their research in the context of comparative analysis of different regions and to analyse this process in the context of the entire country. The analyses performed form a part of a global line of research in the field of education and in the implementation of innovative tools and forms of education provision.
Psychometric Properties and a Multiple Indicators Multiple Cause Model of the Career Aspiration Scale with College Students of Rural Thailand
Authors: Kunchai Jetnipit , Chonsalasin Dissakoon , Khampirat Buratin
Published: September 2021

To help address educational inequalities in student backgrounds and career plans, the measurement of career aspirations can provide crucial information about inequality related to career opportunities. Therefore, this study analyzed the factor structure and psychometric properties of the Career Aspiration Scale-Revised (CAS-R) and the effects of sociodemographic variables on the CAS-R. The study participants were 590 undergraduates at three community colleges in rural Thailand. Confirmatory factor analysis (CFA) was conducted to investigate the validity of the CAS-R three-factor model. The Multiple Indicators Multiple Causes (MIMIC) model with and without differential item functioning (DIF) were applied to investigate the effects of sociodemographic factors as covariates on the CAS-R and specific item response. The CFA results supported the 18-item CAS-R’s three-factor structure because the items well represented latent factors and because the subscales met research standards for reliability and validity. The MIMIC model showed that only the year of study (first-year students) had a positive direct effect on leadership, achievement, and educational aspirations. The MIMIC model with DIF indicated that gender, year of study, major, and paternal education caused inequality in 10 items. Overall, the results show that the 18-item CAS-R has strong psychometric properties and can accurately assess the career aspirations of Thai students. The MIMIC model’s application allowed researchers to show that sociodemographic background affected the leadership, achievement, and education subscales. Obtaining information on the CAS-R scale’s measurements would be useful for researchers, practitioners, and career counselors interested in helping students develop career aspirations and choices.
Environmental Sustainability Strategies for Smaller Companies in the Hotel Industry: Doing the Right Thing or Doing Things Right?
Authors: Calisto Maria de Lurdes , Umbelino Jorge , Gonçalves Ana , Viegas Cláudia
Published: September 2021

The connection between tourism and nature justifies the environmental concerns from tourism agents, namely global hotel chains. This paper explores the differences between smaller hotel chains and their larger global counterparts regarding environmentally sustainable practices. The research approach is qualitative, based on the analysis of 40 company websites and in-depth interviews with 18 entrepreneurs and executives. Results suggest that environmental issues are, for most companies, not a response to societal challenges (‘doing the right thing’), but a response to owners’ concerns (‘doing things right’). Hotel chains develop environmental sustainability practices, mainly for cost-reduction purposes, accommodating the owners’ demands for efficiency. Notwithstanding, there are differences according to the chain’s size. Smaller companies are less prone to adopt environmental practices and to invest in communicating them than global chains. Concerning sustainability in the hotel industry, most studies focus on specific topics and discussions. A more holistic approach to sustainability to establish a deeper understanding of sustainable business decisions in the hotel sector is scarce in the literature. This paper addresses this gap by exploring the strategic reasons behind the sustainable practices of hotel companies, namely smaller ones. Managerial implications of the results are also derived in this paper.
Opportunities and Challenges of Renewable Energy Production in Ethiopia
Authors: Tiruye Girum Ayalneh , Besha Abreham Tesfaye , Mekonnen Yedilfana Setarge , Benti Natei Ermias , Gebreslase Gebrehiwet Abrham , Tufa Ramato Ashu
Published: September 2021

Ethiopia is one of the fastest-growing economies in the world despite immense challenges towards access to sustainable energy supplies and modern energy technologies. The country is undertaking great effort towards the development of renewable energy technologies and green legacy. However, the largest share of energy consumption (≈87%) in Ethiopia is dominated by traditional fuels (charcoal, fuel wood, dung cakes, and agricultural residues) which pose various health and environmental risks. The country has an enormous amount of renewable energy potentials (e.g., solar, hydro, wind and geothermal), but only 5% of its full hydropower potential is exploited and others are not fully harvested or not well developed to date. This review paper provides a comprehensive assessment on renewable energy availability, potential, opportunity, and challenges in Ethiopia. We believe the information provided in this review will enlighten the current and future prospects of renewable energy deployment in Ethiopia.
A Cost-Efficient-Based Cooperative Allocation of Mining Devices and Renewable Resources Enhancing Blockchain Architecture
Authors: Mohamed Mohamed A. , Mirjalili Seyedali , Dampage Udaya , Salmen Saleh H. , Obaid Sami Al , Annuk Andres
Published: September 2021

The impressive furtherance of communication technologies has exhorted industrial companies to link-up these developments with their own abilities with the target of efficiency enhancement through smart supervision and control. With this in mind, the blockchain platform is a prospective solution for merging communication technologies and industrial infrastructures, but there are several challenges. Such obstacles should be addressed to effectively adopt this technology. One of the most recent challenges relative to adopting blockchain technology is the energy consumption of miners. Thus, providing an accurate approach that addresses the underlying cause of the problem will carry weight in the future. This work addresses managing the energy consumption of miners by using the advantage of distributed generation resources (DGRs). Along the same vein, it appears that achieving the optimal solution requires executing the modified reconfirmation of DGRs and miners (indeed, mining pool systems) in the smart grid. In order to perform this task, this article utilizes the Intelligent Priority Selection (IPS) method since this method is up to snuff for corporative allocation. In order to find practical solutions for this problem, the uncertainty is also modeled as a credible index highly correlated with the load and generation. All in all, it can be said that the outcome of this research study can help researchers in the field of enhancement of social welfare by using the proposed technology.
Valuable Secondary Habitats or Hazardous Ecological Traps? Environmental Risk Assessment of Minor and Trace Elements in Fly Ash Deposits across the Czech Republic
Authors: Chmelová Eliška , Kolar Vojtech , Jan Jiří , Carreira Bruno M. , Landeira-Dabarca Andrea , Otáhalová Šárka , Poláková Martina , Vebrová Lucie , Borovec Jakub , Boukal David S. , Tropek Robert
Published: September 2021

Deposits of coal combustion wastes, especially fly ash, are sources of environmental and health risks in industrial regions. Recently, fly ash deposits have been reported as habitat surrogates for some threatened arthropods in Central Europe. However, the potential environmental risks of fly ash have not yet been assessed in the region. We analysed concentrations of 19 minor and trace elements in 19 lignite combustion waste deposits in the Czech Republic. We assessed their environmental risks by comparison with the national and EU legislation limits, and with several commonly used indices. Over 50% of the samples exceeded the Czech national limits for As, Cu, V, or Zn, whilst only V exceeded the EU limits. For some studied elements, the high-risk indices were detected in several localities. Nevertheless, the measured water characteristics, the long-term presence of fly ash, previous leaching by acid rains, and the low amount of organic matter altogether can infer low biological availability of these elements. We presume the revealed high concentrations of some heavy metals at some studied sites can be harmful for some colonising species. Nevertheless, more ecotoxicological research on particular species is needed for final decision on their conservation potential for terrestrial and freshwater biota.
Identifying and Prioritizing Sustainable Urban Mobility Barriers through a Modified Delphi-AHP Approach
Authors: Anastasiadou Konstantina , Gavanas Nikolaos , Pyrgidis Christos , Pitsiava-Latinopoulou Magda
Published: September 2021

Sustainable urban mobility has been the epicenter both at the scientific and administrative level during the last decades, with a high number of relevant research projects, awareness campaigns, and other initiatives taking place at the local, national, and international level. However, many urban areas have so far achieved limited results in this direction because of political, institutional, organizational, technological, infrastructural, and socio-economic barriers as well as unforeseeable (e.g., COVID-19) conditions. The overall aim of the present research study is to support policy-making by proposing a methodology that identifies and prioritizes the sustainable mobility barriers for a specific urban area, with a view to developing effective policies. Towards this purpose, this work provides, in the first phase, a comprehensive inventory of barriers based on a literature review. In the second phase, a methodology using as a basic scientific tool a modified Delphi-AHP is proposed for the adaptation of this inventory to a specific urban area and for both the evaluation and prioritization of sustainable mobility barriers. The whole process is then applied in Thessaloniki, Greece, a European city suffering from many problems related to sustainable mobility. The above pilot application confirms that this approach can be integrated as a supporting tool in the first steps of sustainable urban mobility plans (SUMPs).
Municipal Practices for Integrated Planning of Nature-Based Solutions in Urban Development in the Stockholm Region
Authors: Brokking Peter , Mörtberg Ulla , Balfors Berit
Published: September 2021

Urban planning is assumed to play an important role in developing nature-based solutions (NBS). To explore how NBS is addressed in urban development, municipal planning practices are analyzed based on three case studies in the Stockholm region of Sweden. Through focus group discussions, interviews and document studies, the planning and implementation of NBS and their intended contribution to regional green infrastructure (GI) and social and ecological qualities are investigated. The results show that the planning and design of urban green spaces engages the local community. Moreover, different conceptual frameworks are used to strengthen an ecological perspective and nurture expected outcomes, in particular ecosystem services and GI. Through competence development and collaborative approaches, the co-creation of innovative solutions for public and private green spaces is promoted. However, institutional conditions, e.g., legal frameworks and landownership shape the planning process and can challenge the ability to enhance social and ecological qualities. An assessment of the planning processes indicates a strong focus on ecosystem services and local GI, while the potential to contribute to regional GI differs widely between cases. The study concludes that a knowledge-driven and integrative planning process can foster the potential of NBS for green and sustainable cities.
Integration of Policy Decision Making for Sustainable Land Use within Cities
Authors: Kim Soyoung
Published: September 2021

Local land use policies can shape the sustainability of urban systems, but integrated land use at the local level is challenging since it requires the coordination of multiple semi-independent agencies within cities to effectively address collective actions problems and overcome functional divisions. Although this problem is widely acknowledged, systematic examination of what factors are related to internal coordination of land use functions is lacking. This research investigates what influences the extent to which cities coordinate across functional areas to promote integrative land use decision making. I address this question by first describing a conceptual framework drawing from institutional collective action (ICA) perspectives to understand internal city collaboration across policy functions. I then advance explanations linking institutions and community characteristics to the degree of coordination in municipal land use. Using a 2015 survey of 1124 U.S. cities, I test the hypothesized relationships based on the functional institutional collective action framework. The findings reveal that political institutions, city operation of utilities, elected officials support, and fiscal capacity increase coordination. In conclusion the implications of the findings for theory and land use planning research are discussed.
Polycyclic Aromatic Hydrocarbon Sorption by Functionalized Humic Acids Immobilized in Micro- and Nano-Zeolites
Authors: Robles-Mora Gabriela , Barrera-Cortés Josefina , Valdez-Castro Lucila , Solorza-Feria Omar , García-Díaz César
Published: September 2021

Polycyclic aromatic hydrocarbons (PAHs) are hazardous compounds originating from anthropogenic activity. Due to their carcinogenic properties for humans, several technologies have been developed for PAH removal. Sorption with natural and organic materials is currently one of the most studied due to its low cost and its environmentally friendly nature. In this work, a hybrid sorbent involving functionalized humic acids (HAs) and nano-zeolite is proposed to entrap PAHs. The use of functionalized HAs immobilized in a porous support is designed to address the instability of HAs in solution, which has been already reported. HA functionalization was carried out to increase the non-polarity of HAs and aliphatic group formation. The HAs were functionalized by esterification/etherification with alkyl halides, and their chemical changes were verified by FTIR and NMR. The sorption isotherms of the functionalized HAs in micro- and nano-zeolites were used to assess the performance of the nano-zeolites in adsorbing these HAs. The hybrid support allowed the removal of anthracene and pyrene at percentages higher than 90%; fluoranthene, of angular molecular structure, was adsorbed at 85%. PAHs are ubiquitous in the environment, and a stable sorption of them in solid matrices will allow their removal from the environment through effective and environmentally friendly methods.
Spatial and Temporal Differentiation of the Tourism Water Footprint in Mainland China and Its Influencing Factors
Authors: Xiao Zhenquan , Muhtar Polat , Huo Wenxiu , An Chaogao , Yang Ling , Zhang Fengrong
Published: September 2021

While tourism generates economic benefits at destinations, it also creates certain environmental pressures. In the global context of water scarcity, the spatial and temporal differentiation characteristics of water consumption at tourism destinations have become a focus of attention. Based on panel data, the present study calculates the change trends in China’s tourism water footprint (TWF) in the 2013–2018 period using input-output analysis, analyses the regional differences in TWF changes using kernel density estimation and the Theil index, and investigates the driving factors of the spatial and temporal differentiation of the TWF using the logarithmic mean Divisia index model. The results indicate that (1) the tourism water consumption in China increased year-by-year but that the tourism water use efficiency improved; (2) the proportion of the TWF for accommodation and food in the total TWF gradually increased, while the proportion of the TWF for transportation continuously decreased; (3) the TWF of each region increased continuously, with the absolute difference between regions gradually increasing and the difference in the TWF intensity gradually decreasing; and (4) decomposition analysis showed that the TWF in China was positively driven by per capita expenditure and the number of tourists, with the role of TWF intensity shifting from inhibition to promotion, and that each driving force changed with time. Based on the spatial and temporal differences in the TWF, the provinces in China are divided into five categories, and targeted countermeasures and suggestions are proposed.
The Measurement of Organizational Social Media Integration Impact on Financial and Innovative Performance: An Integrated Model
Authors: Meidute-Kavaliauskiene Ieva , Davidaviciene Vida , Karakaya Gencay , Ghorbani Shahryar
Published: September 2021

Organizations are investing in social media for communicating with customers, promoting employee collaborations, and integrating with partners and suppliers. One of the essential organizational capabilities that can help organizations create and share knowledge and improve their performance and create competitive advantage is social capital and social media integration. Therefore, while examining the role of social media integration on the three dimensions of social capital and the organizational emphasis on knowledge management, the present study has evaluated the impact of knowledge quality on improving organizational financial and innovative performance. This study was conducted in a sample of 280 employees of a bank in Iran. The present study had an applied data collection methodology, using structural equations modeling for analyzing with a descriptive correlational research goal. The results showed that integrated social media positively affects the social capital dimensions and organizational knowledge quality. This study highlights both the potential and limitations of social media in promoting organizational knowledge management. Businesses must consciously manage the assimilation and use of social media to benefit from them. The authors position the study at the intersection of social media, social capital, and knowledge management and explicate how social media works through social capital and organizational knowledge management efforts to affect knowledge quality.
Perceptions of Safety Climate in Construction Projects between Workers and Managers/Supervisors in the Developing Country of Iran
Authors: Chan Daniel W. M. , Cristofaro Matteo , Nassereddine Hala , Yiu Nicole S. N. , Sarvari Hadi
Published: September 2021

What are the different perceptions on safety climate (SC) by workers and managers/supervisors engaged in the construction industry of developing countries? Reconciling these two differing views is pivotal for mitigating and avoiding both the injured and fatal accidents in the construction industry, especially in those developing countries where safety conditions are poor and unpredictable, and safety measures are inadequate in most cases. To answer this research question, the collective perceptions of 118 construction workers and 123 managers/supervisors on the SC in construction projects in Iran were gleaned and investigated. In particular, these perceptions were initially collected by two different empirical surveys validated by a sample of university professors and construction managers and then analyzed through the Kaiser-Meyer-Olkin (KMO) test and Bartlett’s test of sphericity under factor analysis, together with a one-sample t-test. Results indicated that “workers’ attitudes and perceptions”, “safety knowledge and training”, “working relationships and roles of colleagues”, and “workers’ risk perceptions” are important categories of SC factors perceived by construction workers, whereas “safety rules and management practices” is the essential category of SC factors discerned by managers/supervisors. The difference in perceptions between workers and managers/supervisors is considered to be beneficial for an overall understanding of SC in general and for developing countries in particular. Moreover, a series of effective suggestions for improving SC in the construction industry of developing countries are provided with reference to each category. The views of SC factors are reinforced as a social process combining the synergies of workers and managers/supervisors, as well as proper safety training to be pushed forward as an essential activity that should be incorporated in human resources development of construction organizations so as to improve the existing level of SC, leading to fewer accidents at the industry level.