Search

• Enhanced renewable energy market predictive accuracy using hybridizing RNNs and CNNs. • Efficient feature selection using MHC algorithm to enhance model efficiency. • Robust generalization using hybrid model integrates RNNs, CNNs, and MHC. Our research introduces a novel hybrid model aimed at driving the sustainable economy by innovating efficiency in forecasting renewable resource market trends for recovery. The fusion of Hierarchical Recurrent Neural Networks (RNNs) and LeNet-5 Convolutional Neural Networks (CNNs) capitalizes on the distinct advantages of both architectures. RNNs capture temporal dependencies, while CNNs identify spatial patterns, providing a holistic understanding of market dynamics. This symbiosis significantly enhances predictive accuracy, empowering stakeholders with more reliable insights into the trajectory of renewable resource markets. Efficient feature selection is achieved through the incorporation of the Modified Hill Climbing (MHC) algorithm. As an evolutionary feature selection technique, MHC dynamically refines input features during the learning process, adapting to the evolving nature of renewable resource markets. This adaptive feature selection not only improves computational efficiency and interpretability but also ensures a focus on the most relevant information, aligning with the goal of driving sustainable circular economic recovery. The fortified hybrid model, harmonizing RNNs, CNNs, and MHC, showcases heightened robustness and generalization across diverse market conditions. By effectively merging deep learning architectures with an evolutionary feature selection process, the model adeptly captures intricate patterns while mitigating overfitting. This contribution underscores the applicability of the proposed approach to real-world scenarios, positioning it as a catalyst for innovative efficiency in renewable resource markets—a pivotal driver for the recovery of the sustainable economy. Our research marks a crucial advancement in the realm of reliable and adaptable forecasting models, essential for informed decision-making in the dynamic landscape of renewable energy markets. [ABSTRACT FROM AUTHOR]

[Display omitted] • A new CDU strategy to mitigate the NH3 in the atmosphere is assessed. • An environmental action towards NH3 emission sources from pig houses. • The waste CO 2 and NH 3 from pig farms could be converted into NH 4 HCO 3. • Capture 8.2 Mt NH 3 pig emission avoid the formation 2.9 1035 of PM 2.5 annually. Pig farmhouses face unprecedented challenges in meeting the growing demand to feed an increasing population. To do so, these farms contribute significantly to the production of approximately 35 % of the world's NH 3 emissions, a highly harmful air pollutant. In response to this critical environmental issue, the CO 2 Management Pig Slurry Strategy (CO 2 -MPS) proposes an innovative solution to mitigate NH 3 emissions by leveraging the biogenic CO 2 produced within pig farmhouses. This groundbreaking Carbon Dioxide Utilization (CDU) approach based on utilizing this biogenic CO 2 to form a protective blanket over pig manure lagoons promises the reduction of over 8 million metric tons of NH 3 emissions annually. Such NH 3 emissions are well-documented initiators of Particulate Matter, particularly PM 2.5 , highlighting the potential positive impact on air quality of this strategy. [ABSTRACT FROM AUTHOR]

Gold mining industry has attracted significant attention for its impact on the environment, encouraging a responsive interest in recovering valuable materials from gold mining wastewater. This study, aligned with the principles of the circular economy, aimed to explore the extraction of water, sulfuric acid, nickel, and cobalt from gold wastewater, employing air gap membrane distillation (AGMD), non-dispersive solvent extraction, and conventional solvent extraction. In the AGMD process, it was demonstrated that 69 % of the wastewater could be reclaimed in the form of high-quality distilled (6.6 ± 1.8 L/m2h). The reclaimed water played a pivotal role in the subsequent non-dispersive extraction stage, acting as a re-extraction agent. Hollow membrane contactors were employed in this stage, achieving a recovery rate of over 95 % for sulfuric acid from the concentrate, with high selectivity over iron (β Fe = 488) and magnesium (β Mg = 8011;). The acid-depleted stream was then subjected to conventional solvent extraction, wherein Cyanex 272 proved highly effective in extracting nickel, although with limited success in extracting cobalt. The previously used acid current was reintroduced as a re-extractant, demonstrating an 89.3 % re-extraction efficiency. In summary, this study conclusively demonstrated the feasibility of reintroducing water, sulfuric acid, and nickel into the economic cycle through the applied methods. The recovered materials were carefully examined for their potential applications, not only within the gold mining but also across various industrial sectors. This multifaceted approach aligns with the circular economy's objectives, fostering the efficient and sustainable reintroduction of recovered materials into economic processes. [ABSTRACT FROM AUTHOR]

The central thesis of this article is that the network of living relationships between community, ecology and land as understood by the Amadiba people of Xolobeni may be recognised as an integral part of the wider context in which public and ecumenical oikos- and ubuntu theology needs to be practiced, in a challenging time in South African society is dealing with serious challenges regarding mining, land, economic development and communities’ struggle to control their own livelihoods and destinies. As part of this article, the story of the Amadiba Crisis Committee’s struggle to say no against brutal mining and road development is told. This leads to the searching for some pointers for public oiko-ubuntu theologians to participate in the struggle for human rights and self-determination for communities threatened by mining. These are, i) a contextual analysis of government’s engagement with ecology and economy from perspective of the oikonomia tou Theou (the economy of God); ii) ecumenical cooperation with the groundswell of community organisations and ngo’s who are working for justice for mining-affected communities; iii) and possible ways of keeping government accountable to communities.

This paper is devoted to the investigation of environmental, social and governance investment (investment with ESG criterion) normative base in the context of standardization process in sustainable economy financing. Complexity of such standardization and the lack of commonly accepted regulations, indexes metrics are under discussions of scholars, which encourage the need for clear guidance in ESG investment. 651 sustainability rating products and more than 300 investment policy instruments in different countries show the need for classifying the ESG standards. The solution of this scientific and practical task is based on the developed ESG investment standards system classifications. Proposed classification incorporates such criteria as level of standards adoption, mandatory degree, sectorial specificity, degree of companies’ awareness of responsible activity, ensuring transparency and the benchmarks formation, creating the institutional support of the ESG investment standardization process in sustainable economy and making more grounded investment and regulatory decisions.

Copyright of Omer Halisdemir Universitesi Iktisadi ve Idari Bilimler Fakültesi Dergisi is the property of Omer Halisdemir University, Faculty of Economics & Admistrative Sciene and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Terpenoids have an impressive structural diversity and provide valuable substances for a variety of industrial applications. Among terpenes, the sesquiterpenes (C15) are the largest subclass with bioactivities ranging from aroma to health promotion. In this article, we show a gram‐scale production of the sesquiterpene α‐humulene in final aqueous concentrations of 2 g L−1 with the recombinant strain Cupriavidus necator pKR‐hum in a fed‐batch mode on fructose as carbon source and n‐dodecane as an extracting organic phase for in situ product removal. Since C. necator is capable of both heterotrophic and autotrophic growth, we additionally modeled the theoretically possible yields of a heterotrophic versus an autotrophic process on CO2 in industrially relevant quantities. We compared the cost‐effectiveness of both processes based on a production of 10 t α‐humulene per year, with both processes performing equally with similar costs and gains. Furthermore, the expression and activity of 3‐hydroxymethylglutaryl‐CoA reductase (hmgR) from Myxococcus xanthus was identified as the main limitation of our constructed C. necator pKR‐hum strain. Thus, we outlined possible solutions for further improvement of our production strain, for example, the replacement of the hmgR from M. xanthus by a plant‐based variant to increase α‐humulene production titers in the future. [ABSTRACT FROM AUTHOR]

The concept of logistics is a supply chain system to facilitate the movement of goods and resources (raw materials), delivery scheduling, storage, and marketing to consumer endpoints that support economic growth. The increase in logistics transportation also has a negative impact, especially environmental problems, the effectiveness of logistics transportation, and the quality of materials and goods which will eventually involve economic problems. This article aims to compare the implementation of modern logistics transportation systems in the European Union and Indonesia with the application of green logistics. This study uses a comparative study method with a qualitative descriptive approach to modern logistics transportation that applies the concept of green logistics. The problem of European Union logistics transportation is only in the human resources sector and congestion in a certain period. The solution is to add regulations related to alternative or manipulated road systems to reduce congestion. On the other hand, the problems that exist in Indonesia are related to the low facilities, regulations, and investment for logistics transportation. As a solution, several regulations and programs have been implemented as a green logistics concept such as anti-ODOL regulations, and the sea toll program. [ABSTRACT FROM AUTHOR]

The recent economic crisis asks for expansive economic policies because already the crisis of 2007-2008 showed the lack of investments and low employment rates as the crucial week points of the European economy. Recently even European Commission recognized the urgency of a large investment plan in Europe to face the Covid’s crisis with the launch of the NGEU to reach green and sustainable goals. This underlines the role of development industrial policies and the coordination of the dynamic relationships between cities and regions with Europe giving a big push to territorial development projects. Industrial and development planning should be realized through a multilevel and experimental governance.

The present study was carried out to investigate biodiesel production via transesterification of sunflower oil employing heterogeneous catalyst derived from indigenous ginger (Zingiber Officinale) leaves. It also aims to compare the techno-economy performance of the ginger-based catalysts in 3 different forms viz. calcinated (CGL), activated by KOH (KGL) and NaOH (NGL). The plant-based catalysts were characterised by Scanning electron microscopy (SEM), Brunauer-Emmett-Teller (BET) and Fourier transform infrared spectroscopy (FTIR). The parametric effects on the biodiesel production such as reaction time, methanol to oil ratio and catalyst loading were investigated. The experimental result shows that 1.6 wt % catalyst, 6:1 M ratio of alcohol to oil, 1 h 30 min of reaction time with a speed of 200 rpm gave the best results. It was found that the KGL obtained highest biodiesel yield of 93.83% under optimum conditions. Subsequently, the specific energy and energy productivity of KGL catalyst was found to be 1.2728, 26.1544 MJ/kg and 0.0382 kg/MJ, respectively, per 1 L of biodiesel. Meanwhile, the renewable energy to non-renewable energy ratio for CGL, KGL and NGL is found to be 3.17, 4.01 and 3.67, respectively. A higher sustainable renewable energy-yield ratio and overall economical profit cost ratio are preferable for the biodiesel production process. Image 1 • Novel ginger leave-based catalysts CGL, KGL and NGL. • Biodiesel yield (93.83%) highest with KGL under optimum conditions. • Profit cost ratios 1.434 for KGL, 1.420 for NGL and 1.397 for CGL catalyst. • The renewable energy to non-renewable energy ratio for KGL is found to be superior. [ABSTRACT FROM AUTHOR]

Circular and sharing economy The circular economy vision has raised awareness for the need to move from a linear economy to one where the value of materials and products is kept in the system as long as possible. How life cycle-based science and practice support the transition towards a sustainable economy At the 74th Discussion Forum on Life Cycle Assessment (DF LCA) held on June 29, 2020, the role of different life cycle-based approaches for generating scientific knowledge about a sustainable economy were discussed within the LCA community. Keywords: LCA; sustainable economy; transition; decision-making; policy; circular economy EN LCA sustainable economy transition decision-making policy circular economy 1062 1069 8 06/01/21 20210501 NES 210501 The original online version of this article was revised due to a mistake in one of the authors affiliation. [Extracted from the article]

Background: Terpenes are remarkably diverse natural structures, which can be formed via two different pathways leading to two common intermediates. Among those, sesquiterpenes represent a variety of industrially relevant products. One important industrially produced product is β-farnesene as a precursor for a jet fuel additive. So far, microbial terpene production has been mostly limited to known production hosts, which are only able to grow on heterotrophic substrates. Results: In this paper, we for the first time describe β-farnesene production by the versatile bacterial host Cupriavidus necator on fructose, which is known to grow hetero- and autotrophically and even in bioelectrochemical systems. We were able to show a growth-dependent production of β-farnesene by expressing the β-farnesene synthase from Artemisia annua in C. necator H16 PHB-4. Additionally, we performed a scale-up in a parallel reactor system with production titers of 26.3 ± 1.3 µM β-farnesene with a fed-batch process. Conclusions: The β-farnesene production titers reported in this paper are not in the same range as titers published with known heterotrophic producers E. coli or S. cerevisiae. However, this proof-of-principle study with C. necator as production host opens new synthesis routes toward a sustainable economy and leaves room for further optimizations, which have been already performed with the known production strains. [ABSTRACT FROM AUTHOR]

The sustainable economic learning course recommendation can quickly find the knowledge information that the user really needs from the massive information space and realize the personalized recommendation to the user. However, the occurrence of trust attacks seriously affects the normal recommendation function of the recommendation system, resulting in its failure to provide users with reliable and reliable recommendation results. In order to solve the vulnerability of the recommendation system to the support attack, based on text vector model and support vector machine, this paper makes a comprehensive analysis of the current research status of the robust recommendation technology. Moreover, based on the idea of suspicious user metrics, this paper has conducts in-depth research on how to design highly robust recommendation algorithms, and constructs a highly reliable sustainable economic learning course recommendation model. In addition to this, this research tests the performance of the system from two perspectives of course recommendation satisfaction and system retrieval accuracy. The experiment proves that the model constructed in this paper performs well in the recommendation of sustainable economic learning courses. [ABSTRACT FROM AUTHOR]

The benefits of the complex microscopic and industrially important group of microalgae such as diatoms is not hidden and have lately surprised the scientific community with their industrial potential. The ability to survive in harsh conditions and the presence of different pore structures and defined cell walls have made diatoms ideal cell machinery to produce a variety of industrial products. The prospect of using a diatom cell for industrial application has increased significantly in synch with the advances in microscopy, metabarcoding, analytical and genetic tools. Furthermore, it is well noted that the approach of industry and academia to the use of genetic tools has changed significantly, resulting in a well-defined characterization of various molecular components of diatoms. It is possible to conduct the primary culturing, harvesting, and further downstream processing of diatom culture in a cost-effective manner. Diatoms hold all the qualities to become the alternative raw material for pharmaceutical, nanotechnology, and energy sources leading to a sustainable economy. In this review, an attempt has been made to gather important progress in the different industrial applications of diatoms such as biotechnology, biomedical, nanotechnology, and environmental technologies.

The present paper shades light into two very hot topics: food waste and rural tourism. in this very fast-paced and consumerist society the issue of food waste becomes of crucial importance in the context of a sustainable bioeconomy conducted under the context of rural tourism. Therefore, the hereby research. The current paper addresses the problem of food waste in rural touristic accommodation from the perspective of the behavior of the guests towards food consumed while traveling/vacationing. through a comprehensive review of the studies currently available, it is established that there are indications that individuals change their food habits while traveling and that these changes can have a negative impact on the amount of food wasted (i.e., by increasing the amount of food that goes unconsumed). The paper concludes with a discussion of the findings and a series of recommendations both for policy makers and for the managers of rural touristic accommodations.

The development of e-commerce has led to a surge in the number of online shopping parcels. However, given the lack of scale effect, last mile delivery is inefficient, expensive, and produces a considerable amount of carbon emissions, which has become an obstacle to the development of a sustainable economy. This work proposes a traveling salesman problem with carbon emission reduction in last mile delivery. The proposed problem aims to reduce the total costs and carbon emissions of last mile delivery by deciding on the allocation of parcel lockers while scheduling delivery routes. In addition, we take the customer self-collection intention into consideration and translate it into self-collection costs, which are included in the objective. An iterated local search (ILS) algorithm is proposed, and four new local search operators are designed to improve customer allocation. The proposed method is tested on a set of scattered and clustered instances, including a real-world instance. The computational results show the superiority and competitiveness of the proposed algorithm.

Clusterization has been named as one of the priorities of the development strategy of many European Union countries. Clusterization experts have already hypothesized that clusters of various economic activities are important not only in the formation of regional policy, but they also in a complex way stimulate the whole country’s economic growth from job creation to the development of intellectual property to new innovative industries. These realities show that cluster activity and its results are important not only for cluster participants, but also for the economy of the country in which clusters operate. However, there are currently no reliable and effective tools to validate this hypothesis. In the analysis of the problem and in order to deepen the theoretical knowledge of the object under study, this paper analyses and summarizes systematic, logical and comparative scientific literature, scientific studies, strategic documents and legal acts. Therefore, the purpose of this paper is to provide a theoretical overview of the currently available knowledge on service clusterization and sustainable economic development, to demonstrate the acute absence of relevant theoretical foundations and linkages that would allow to analyse these phenomena, and propose a methodological approach that would allow to expand this field of study.

Blockchain is one of the most disruptive innovations in the field of technology in 21st century. Blockchain, a distributed ledger technology (DLT) and smart contracts, has emerged as a ground-breaking application in the financial sector. The three key properties of Blockchain technology, Decentralization, Transparency and Immutability have created a huge impact on the banking and finance industries. As technology is the main driving force in Blockchain and its various applications, it will also act as an enabler to sustainable finance which will ultimately lead towards achieving sustainable economy and also sustainable development. This study is an attempt to understand the far-reaching potential of Blockchain technology and its applications such as Bitcoin in the banking and financial services sector. This study has also highlighted the benefits and disadvantages of using Blockchain technology on the banking and finance industries. This study is entirely a theoretical overview based on the available research in the area of Blockchain technology and its application in financial sector. This study will help to understand the future of financial sector in the advent of incorporation of Blockchain technology. [ABSTRACT FROM AUTHOR]

Sustainable management of natural resources is one of the major objectives of society. The well-being of the planet depends on the use of these resources. Based on these needs, the circular economy is an economic concept that interacts with sustainability and whose goal is to keep the value of products, materials and resources in the economy for as long as possible and to minimize waste production. The basic principle of the circular economy is the "closing of the life cycle" of goods, services, waste, materials, water and energy. In this paper we aim to bring to the fore the importance of efficient use of resources for sustainable economic growth, starting from the concept of circulating economy. At the same time, we will analyze the main indicators underlying the new economic model supported by the European Union. [ABSTRACT FROM AUTHOR]

The industry and consumers have a role toward the actualisation of sustainable economy; sustainable product innovation and consumer sustainable purchasing are important avenues. Objective: This paper examines the relationship between sustainable product innovation and consumer patronage of sustainable products. Prior Work: the paper is inclined on the concept of sustainable production. Approach: Data were collected from the index of European Union Market for Sustainable Products. The data on sustainable sourcing, sustainable production strategy and consumer purchase of sustainable products were analysed using the fixed and random effects panel regression. Finding: results from the analysis indicate a significant positive relationship between sustainable sourcing, sustainable production strategy and consumer purchase at a p-value of less than 0.001. Implication: Producers of can improve sales of sustainable products by improving sustainable sourcing and production strategy. The paper provides academic case study for sustainable business and further research agenda is suggested to explore aspects of sustainable products most preferred by consumers. Value: this paper provides first empirical link between the EU data on sustainable sourcing and consumer patronage and provides initial result, which indicates that random effect regression provides a better model for this analysis. [ABSTRACT FROM AUTHOR]

Copyright of Gazdalkodas is the property of Herman Otto Intezet Nonprofit Kft. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Electricity production and consumption can be considered as one of the most important factors and necessities in the growth and development of any country. To generate electricity, it is necessary to build power plants. Due to the high exchange rate and the high cost of construction and operation of any new power plant in the electricity industry, it is necessary to select these power plants based on a wide range of criteria. In this research, using economic, environmental, technical, and social criteria, different power plants in Iran are prioritised using Vlse Kriterijumska Optimizacija Kompromisno Resenje (VIKOR) fuzzy hierarchical analysis methods for the 2018–2040 period. Indicators of environmental pollution, initial investment per unit of electricity generated, maintenance costs, accessibility, public acceptability, and the possibility of developing and increasing capacity were the main indicators affecting the prioritisation of power plants in Iran. In general, according to all the indicators studied in this study, the level of environmental pollution has the greatest impact on the prioritisation of power plants. Also, the indicators related to the amount of initial investment per kilowatt-hour of electricity generated, maintenance costs, the possibility of expanding and increasing the capacity, and the possibility of easy access to spare parts were the most important factors. The results of multicriteria decision prioritisation show that solar power plants are the first option for the strategic choice of power plants, and wind farms and small-scale biomass are in the next priorities. Therefore, it is suggested that the government and policy institutions, according to the prioritisation of power plants, create the necessary infrastructure to exploit these energies. [ABSTRACT FROM AUTHOR]

Development of new products is a typical task in the tourism planning process. New trends are increasingly focusing on products related to empathy with nature, health and wellbeing. The main reasons for this emerging demand are the changing working conditions, stress, aging of the population and the imposition of a feeling of isolation from nature and contact with it in many people. One of the important goals of the INSiGHTS project is the development of new tourist products based on the natural and cultural heritage in support of a healthy lifestyle in the tourist destination of Plovdiv. This article presents one of the four developed routes under the project that pass along the Maritsa River and are intended for Bulgarian and foreign individual tourists; for small groups of 2 to 10 people (families, colleagues, good friends who want to share their free time). The aim is sustainable use of natural and cultural heritage of Plovdiv in preserving and improving the diversity of tourist resources to make it a destination for healthy and slow tourism, which is an integral part of the strategic development of the region with a balanced and sustainable economy, a high standard of living and a restored, preserved and healthy living environment. [ABSTRACT FROM AUTHOR]