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A comprehensive education for an economically sustainable society in the Argentine Republic
Get PDFThe 2030 Agenda for Sustainable Development establishes education as a fundamental tool to raise awareness about the importance of sustainable development, highlighting the importance of aligning educational policies in Argentina with international standards. There is growing interest and some promising initiatives in sustainable education in Argentina, but significant barriers still must be overcome. Teacher training and the integration of sustainability into curricula are key aspects that need attention to move towards an educational system that fosters an active commitment to sustainable development
Outage performance of users in CR-NOMA network systems
Get PDFNon-Orthogonal Multiple Access (NOMA) and Cognitive Radio (CR) technologies present viable solutions to mitigate spectrum scarcity in wireless communication systems. This paper focuses on evaluating the performance of CR-NOMA networks, particularly for user devices operating under a Simultaneous Wireless Information and Power Transfer (SWIPT) framework. We derive explicit mathematical expressions for key performance metrics, including outage probability (OP) and system throughput, as they relate to various power allocation coefficients. Comprehensive simulations are conducted to validate our theoretical findings, revealing that appropriate power allocation significantly impacts user fairness and overall network throughput. The analysis covers a wide range of realistic channel conditions, including Rayleigh fading, to ensure robustness. Additionally, our study addresses the challenge of limiting interference to the primary network by optimizing the transmission power of secondary users while adhering to interference constraints. The results show that the primary user device (D1) consistently outperforms the secondary user device (D2), emphasizing the importance of strategic resource management. These contributions provide deeper insights into the factors affecting outage performance in CR-NOMA systems, offering effective solutions for enhancing the robustness, fairness, and efficiency of next-generation wireless communication networks
Quality of Jingdong Express delivery service in Longyao County evaluation
Get PDFThis article aims to conduct a comprehensive questionnaire survey and analysis of the current state of express delivery in Longyao, focusing on different population segments. The research evaluates the reliability, validity, and factor analysis of the questionnaire to ensure the data’s accuracy and dependability. Findings have highlighted several critical issues with JD Express in Longyao County, including untimely problem resolution, insufficient logistics feedback, package damage, and low levels of informatization in rural areas. Proposed solutions to these challenges involve enhancing employee training, implementing effective measures to minimize package damage, and optimizing distribution strategies to improve service efficiency. By addressing these areas, the quality of JD Express services can be significantly enhanced. Moreover, the evaluation reveals a complex interplay between modern logistics and the county’s economy, suggesting that both elements can either promote or hinder each other. Systematic analysis and resolution of the identified problems are essential for improving customer satisfaction, which is vital for stimulating the growth of online shopping in rural regions. This research not only provides insights into the current situation of urban express delivery in Longyao but also offers actionable recommendations for stakeholders seeking to enhance service quality and address existing gaps within the logistics framework. Ultimately, the findings underscore the importance of understanding local dynamics in order to foster more efficient and reliable express delivery services that cater to the needs of diverse populations
Systematic review of pollutants in Santiago de Cuba Bay
Get PDFThe bay of Santiago de Cuba is the second in importance and contamination in the country. Aggressive waste discharges with organic and inorganic materials, heavy metals, masonry residues, grease, oils and hydrocarbons, among others, are discharged into the bay. A systematic review of databases, publications, web pages and other documents was carried out in order to find out more about contamination. Eighty-five percent of the main reports refer to organic matter contamination and waste characterization, followed by hydrocarbon contamination (15%). This makes the work related to sustainable management in the bay insufficient
Investigation of the use of Botswana coal fly ash as a material for the adsorption of arsenic from fortified water
Get PDFThe main objective of the study was to characterize raw (RFA), water-washed (WFA) and iron-modified (Fe-WFA) Botswana coal fly ash to determine the physical and chemical properties as well as investigate its potential use as adsorbents for the removal of arsenic(III) ((As(III)) from fortified water. Scanning electron microscopy with an energy dispersive spectrometer (SEM-EDS) showed particles with irregular size and shape for all the materials and porous iron oxide flakes for Fe-WFA. The SEM-EDS, X-ray diffraction analysis (XRD) and X-ray photoelectron spectroscopy (XPS) showed the main constituents of RFA, WFA and Fe-WFA to be SiO2, Fe2O3, Al2O3 and CaO. The XPS further showed the surface composition of Fe-WFA with higher Fe content at 19.7% compared to 0.8% and 1.2% for RFA and WFA respectively. The XRF and XRD results confirmed the successful modification of WFA with iron by showing the Fe2O3 composition increasing from 12.6% of WFA to 25.5% for Fe-WFA. The inductively coupled plasma-mass spectrometry (ICP-MS) results showed continuous reduction of metal concentrations for WFA and Fe-WFA from the first to the sixth wash. The adsorption of As(III) on the adsorbents followed the Freundlich adsorption model. The maximum adsorption capacities of 0.85, 0.02 and 2.26 mgg−1 were obtained for RFA, WFA and Fe-WFA respectively
Impact of LULC spatial dynamics on incompatible mixed land use in Kaduna: A remote sensing and GIS risk analysis
Get PDFThis study assesses the spatio-temporal changes and the impact of urbanization leading to unchecked development within Kaduna city. By utilizing satellite remote sensing data and land use maps of Kaduna, the investigation focused on how the city has expanded over the years and the resultant spurring of incompatible land uses, where residential and commercial uses are increasingly mixed with industrial zones. Using LULC analysis, the results revealed that Kaduna has experienced a 145% increase in urban area between 2001–2014, with the expansion primarily occurring in the southern part of Kaduna metropolis. A change map showing different degrees of increase and decrease in land cover classes was obtained from the post-classification comparison. Using buffer analysis, the study identified and mapped risk zones that represent areas highly susceptible to adverse effects of industrial pollution in the study area. Notably, the Kakuri industrial area has seen significant new incompatible residential and commercial developments, and areas surrounding the Kaduna Refinery and Petrochemical Company (KRPC refinery) have witnessed the proliferation of high-density residential neighborhoods such as Sabon Tasha, Maraba, and Romi. Additionally, other areas such as Mando and Western Bypass are experiencing a mixture of industrial, residential, and commercial activities. These findings underscore the need for effective urban planning and land use management to address the challenges posed by rapid urban expansion and mixed land use in Kaduna
Advocating ‘eco-village’ for sustainable development: The dayalbagh way of life
Get PDFIndia as a country has its identity deeply rooted in its rural culture. Whether we talk about agriculture, tradition, food, art, or music, the rural society of India has always proven itself a representation towards the national front. The Dayalbagh society in Agra city of Uttar Pradesh (India) is engaged to strengthen the nation’s roots through education, technology, sustainability, management, innovation, research, and most importantly, selfless service. The major potential for economic growth in India lies in the development of its rural areas. This article is an attempt to spot the outlook of a society that has its inception for the past 100 years and is continuously making efforts to glorify the message of sustainable development, environmental protection, and rural development through its effective plans in designing an eco-village-based society. Based on the narrative description approach, this article highlights the efforts and strategies employed by the Dayalbagh society to promote sustainable development, environmental protection, and rural development. The focus is on how society integrates education, technology, sustainability, management, innovation, research, and selfless service to achieve these goals. The Dayalbagh society’s initiatives have taken into consideration economic, social, environmental, and human aspects, demonstrating significant contributions towards sustainable development and rural empowerment. The philosophy and successful practices of the Dayalbagh society can inspire and guide others in developing action plans for effective environmental protection and sustainable rural development. By adopting such approaches, other organizations, decision-makers, and individuals can contribute to the overall growth and well-being of rural areas in India
Charcoal briquetting: Alternative energy sources and waste management solution for sustainable cities in Tanzania
Get PDFThis paper presents a report as part of a comprehensive study on the utilization of some forms of solid waste (SW) to make charcoal briquettes (CB) as an alternative fuel source in communities that are reliant upon traditional charcoal (TC) and wood as the primary cooking fuels. The study coincides with the Tanzanian government’s efforts to diminish reliance on wood and charcoal as a primary fuel source, particularly for large-scale consumers. Nevertheless, the government restriction on TC usage comes with little or no presentation of alternative sources that are both eco-friendly and economically sustainable. Introducing the mechanism that meets both environmental and economic criteria, the study employs a cross-sectional approach to collect the required data and uses experimental methods to evaluate the performance of the produced CB. Such tests focused on cooking duration, burning rate (BR), specific fuel consumption (SFC), and the general efficiency expressed by the percentage of heat utilized (PHU). In most cases, CB performs by far or less well than TC. Such results make the study important as it develops clean cooking technologies to solve the existing fuel crisis and improve health and environmental conditions from SW pollution while reducing deforestation, subsequent desertification, and climate change for sustainable environmental conservation
Social enterprises transformation and its effects on socio-economic development in developed and developing countries
Get PDFIn the twenty-first century, the idea of social enterprises influencing global socio-economic growth has gained much attention and has momentous implications for the modern economy. Both emerging and developed countries frequently observe its considerable impact on their economy as social enterprise transformation has such a wide-ranging effect on socioeconomic growth. The purpose of this study is to present evidence of the impacts of global social enterprise transformation on global socio-economic development. However, there are no official statistics available on the effects of the transformation of global social companies on global socio-economic development. The debate in this research demonstrates how social enterprise transform like a collaboration between the private, public, and civil sectors, continually honing their approach to their goals, based on the review of several case studies of social enterprises from around the world. Revamp, acquisitions, and improved performance are all efforts to achieve sustainable societal progress in the fields of economics, culture, and politics. The results indicate that social enterprises transformation causes the socio-economic development of the world. Our results also suggest that social enterprise transformation impact and outcome are more significant in developed countries than in developing countries
Understanding regional development strategies of the European Union and China: Lessons learned for Vietnam
Get PDFThis study aims to understand the European countries and China’s regional development strategies in enhancing cohesion and reducing regional disparity to serve as lessons learned for Vietnam. The study provides an overview of the approaches, priorities, and challenges faced in regional development policies pursued by the European countries and China, showcasing their respective efforts in addressing regional disparities and fostering sustainable development within their territories. From the EU’s macro-regional strategies (MRS), Vietnam can adopt principles of enhanced connectivity, sustainable development, inclusive growth, and institutional coordination to create a framework promoting balanced and sustainable growth. Additionally, the EU’s smart specialization strategy offers a model for fostering innovation-driven growth and regional competitiveness by encouraging regions to identify and capitalize on their unique strengths. From China’s regional development initiatives, Vietnam can learn the importance of targeted interventions to address regional disparities and promote balanced development. Also, China’s success in developing interconnected urban clusters or metropolitan areas-driven regional development strategies offers valuable insights for Vietnam’s urban agglomeration efforts. By adopting these strategies, Vietnam can enhance its sustainable urban development, improve livability, and maximize the economic potential of its cities and towns