scholarly journals Used Tires as Fuel in Clinker Production: Economic and Environmental Implications

2021 ◽  
Vol 13 (18) ◽  
pp. 10455
Author(s):  
Ana María Castañón ◽  
Lluís Sanmiquel ◽  
Marc Bascompta ◽  
Antonio Vega y de la Fuente ◽  
Víctor Contreras ◽  
...  
Keyword(s):  
Environmental Benefits ◽  
Fuel Type ◽  
Time Data ◽  
Environmental Implications ◽  
Productive Process ◽  
Production Economic ◽  
Free Cao ◽  
The One

This work analyzes how gases emitted during the manufacture of clinker vary in a cement plant using two types of fuel: petroleum coke and unusable tires (UTs). This study is based on a case study using real time data on more than 40 process variables. Gases are analyzed from two points of the production process: from the sintering kiln, where the main focus of emissions to the atmosphere is by chimney, and from the preheater. The variation of CO and NOx depending on the oxygen and fuel type is studied. The SO2 levels are also analyzed and a decrease was observed when using the UTs. The quality of the clinker is compared according to the fuel type. The results are analyzed, on the one hand, by the quality of the clinker, determined by the content of the majority (C3S, alite) and minority (free CaO) phases, and, on the other hand, by the kiln sintering temperature, the most influential parameter in the productive process. It is verified that the clinker quality is maintained regardless of the type of fuel used. Therefore, the use of UTs as fuel could generate important economic and environmental benefits for cement companies.

scholarly journals Used Tires as Fuel in Clinker Production: Economic and Environmental Implications

2021 ◽  
Author(s):  
Ana Maria Castañón ◽  
Lluís Sanmiquel ◽  
Marc Bascompta ◽  
Antonio Vega y de la Fuente ◽  
Victor Contreras ◽  
...  
Keyword(s):  
Fuel Type ◽  
Environmental Benefit ◽  
Time Data ◽  
Environmental Implications ◽  
Productive Process ◽  
Production Economic ◽  
Free Cao ◽  
The One

The objective of this work is to compare how the gases emitted during the manufacture of the clinker vary in a cement plant, using two types of fuel: petroleum coke and unusable tires (UTs). The study is based on a case study using real time data on more than 40 process variables. Gases are analysed from two points of the production process: Sintering Kiln, main focus of emission to the atmosphere by chimney, and Preheater. The variation of CO and NOx depending on the oxygen and fuel type is studied. The SO2 levels are also analyzed, observing a decrease when using the UTs. The quality of the Clinker has been compared depending on the fuel type. The results are compared, on the one hand, with the quality of the clinker, determined by the content of the majority (C3S, Alite) and minority (Free CaO) phases, and, on the other hand, with the Kiln sintering temperature, the most influential parameter in the productive process. It is verified that Clinker quality is maintained, regardless of the type of fuel used. Concluding that the use of UTs as fuel can generate an important economic and environmental benefit for cement companies and their environment.

scholarly journals Development of Košice Region by Implementation of Environmental Projects in the Field of Water Management - Case Study

2014 ◽  
Vol 33 (4) ◽  
Author(s):  
Henrieta Pavolová ◽  
Adriana Csikósová ◽  
Tomáš Bakalár
Keyword(s):  
Water Management ◽  
Agricultural Production ◽  
Wastewater Treatment Plants ◽  
Environmental Issues ◽  
Environmental Benefits ◽  
Treated Wastewater ◽  
Management Case Study ◽  
Application Specific

AbstractThe development of the regions in Slovakia in recent years has significant disparities in both so-cio-economic as well as environmental issues, as evidenced by the eight environmentally polluted areas (these areas are highly urbanised with industrial agglomerations or intensive agricultural production).This article deals with a management system model of regional by implementation of projects in environmental field of water management with application-specific benefits and risks arising from the process of their implementation in relation to regional development. It analyses projects in the area of water management of one of the regions of Slovakia, KoŠice region in particular, in terms of connection to public water duct and sewer, identifes a strategy for development of the region and its socio-economic and environmental benefits based on the analysis of drinking water, the quan-tity and quality of treated wastewater through wastewater treatment plants (WTPs). It identifes the infuencing factors of benefits and risks and proposes procedure for solving at various stages.

scholarly journals Understanding Learner Behaviour in Online Courses through Learning Analytics

2021 ◽  
pp. 381-390
Author(s):  
D. Thammi Raju ◽  
G. R. K. Murthy ◽  
S. B. Khade ◽  
B. Padmaja ◽  
B. S. Yashavanth ◽  
...  
Keyword(s):  
Online Learning ◽  
Learning Analytics ◽  
Online Courses ◽  
Learning Experience ◽  
Training Needs ◽  
Online Course ◽  
Quality Of Education ◽  
Time Data

Building an effective online course requires an understanding of learning analytics. The study assumes significance in the COVID 19 pandemic situation as there is a sudden surge in online courses. Analysis of the online course using the data generated from the Moodle Learning Management System (LMS), Google Forms and Google Analytics was carried out to understand the tenants of an effective online course. About 515 learners participated in the initial pre-training needs & expectations’ survey and 472 learners gave feedback at the end, apart from the real-time data generated from LMS and Google Analytics during the course period. This case study analysed online learning behaviour and the supporting learning environment and suggest critical factors to be at the centre stage in the design and development of online courses; leads to the improved online learning experience and thus the quality of education. User needs, quality of resources and effectiveness of online courses are equally important in taking further online courses.

scholarly journals Design for Disassembly and the rehabilitation of public housing stock. A case study

2021 ◽  
pp. 181-191
Author(s):  
Lidia Errante ◽  
Alberto De Capua
Keyword(s):  
Public Housing ◽  
Design Research ◽  
Housing Stock ◽  
Design For Disassembly ◽  
Sustainable Building ◽  
The Public ◽  
Principles Of Design ◽  
The One

This contribution presents the meta-design research scenario of the sustainable building redevelopment of the INA Casa “Sbarre Inferiori” district in Reggio Calabria based on a twofold reflection. On the one hand, the transformative potential, both technological and formal, of the public housing stock created under the INA Casa Plan. On the other, the extension of the life cycle of the buildings and the improvement of the spatial quality of the housing according to a circular, low-tech and ecological approach. The result is an abacus of technological additions in bio-xlam conceived according to the principles of Design for Disassembly, which allows the reuse of the modules in new spatial and functional configurations, and the remanufacturing and recycling of the elements at the end of their life.

“Network Process Re-Engineering” in a Home Textile Network

2011 ◽  
pp. 212-234
Author(s):  
Enrico Baraldi ◽  
Giancarlo Nadin
Keyword(s):  
Complex Network ◽  
The Other ◽  
Coercive Power ◽  
Business Network ◽  
Network Process ◽  
Change Projects ◽  
The One ◽  
Complex Coordination

This chapter relies on a case study featuring the business network around Stella, an Italian home textile manufacturer, to illustrate the challenging issue of engaging other firms into complex “Network Process Re-engineering” (NPR) projects. While the strict technological dimension of selecting, developing, and implementing ICT solutions is certainly very important and poses several challenges to this type of projects, this chapter focuses on other types of challenges, namely those pertaining to the nature and quality of relationships between the actors taking part in a NPR project. We stress the importance of the connection between the specific inter-organizational activities that need to be redesigned and coordinated in better ways, on the one hand, and the bonds existing among the actors, on the other hand. We suggest that very advanced and complex coordination tasks, entailing sensitive communication patterns, can be tackled only if supported by strong, integrative relationships characterized by high trust and commitment between the involved parties. We conclude by discussing how the pivotal firms or the “strategic centers” of a network can support and facilitate complex change projects like NPR by carefully combining different strategies, whereby they both exert coercive power and make concessions to their counterparts in the network.

Redesigning initial teacher’s education practices with learning scenarios

2019 ◽  
Vol 36 (3) ◽  
pp. 266-283 ◽  
Author(s):  
Ana Pedro ◽  
João Piedade ◽  
João Filipe Matos ◽  
Neuza Pedro
Keyword(s):  
Teacher Education ◽  
Initial Teacher Education ◽  
Teacher Education Programs ◽  
Content Type ◽  
Education Practice ◽  
Planning Strategy ◽  
Learning Scenarios ◽  
The One

PurposeThe construction of learning scenarios is a way to plan for teaching activities, promoting the development of skills related to problem solving, collaboration, critical thinking and creativity. Using learning scenarios as a lesson planning strategy becomes a powerful tool in initial teacher education. On the one hand, it mobilizes teaching-related scientific concepts, and on the other hand, it offers opportunities to think on innovative pedagogic approaches involving strategies and capacities essential for the future teacher. Research shows that teacher education programs within real school contexts enriched with digital technologies represent an important factor in increasing the quality of teachers’ preparation and their future professional practice. The paper aims to discuss these issues.Design/methodology/approachThe authors present the analysis of practice of design and implementation of learning scenarios in teachers’ initial education courses developed with students of teaching master degrees. Activity theory is used in the analysis of a case study of a student-teacher in Computer Science.FindingsThe results have been analyzed, contributing to the specification of the principles underlying the learning scenarios in initial teacher education.Research limitations/implicationsResults show the affordances and possibilities of using learning scenarios as structuring resources for the initial teacher education practice.Originality/valueTherefore, the use of learning scenarios brings a set of potentialities to teacher training given its prospective nature.

scholarly journals Environmental Justice and Urban Parks. A Case Study Applied to Tarragona (Spain)

Urban Science ◽  
2021 ◽  
Vol 5 (3) ◽  
pp. 62
Author(s):  
Joan Alberich ◽  
Yolanda Pérez-Albert ◽  
José Ignacio Muro Morales ◽  
Edgar Bustamante Picón
Keyword(s):  
Environmental Justice ◽  
Urban Parks ◽  
City Management ◽  
Average Value ◽  
Multi Criteria Evaluation ◽  
Green Areas ◽  
The One ◽  
Home Sale Prices

There is consensus regarding the fact that urban green areas contribute to the quality of life of their inhabitants. Therefore, efficient city management must assess whether the population has access to green areas and the areas’ quality in relation to, for example, vegetation, facilities or furnishings. Therefore, the objective is to establish environmental justice of urban parks in Tarragona (Spain) by developing a Park Quality Index (PQI) and the sociodemographic characteristics (level of studies, Human Development Index –HDI–, home sale and rental prices) of the population living within 300 m of a park. To prepare this, a GIS-integrated Multi-Criteria Evaluation (MCE) was produced. The results show that the green areas have low accessibility and availability and that most parks obtain an average-low PQI, with the best-valued aspect being the vegetation and the worst being the facilities. Regarding the degree of environmental justice, a causal relationship between the PQI and the indicators used emerges. The average value of the home sale prices is the one that shows the greatest correlation. These results can be used together with participatory procedures as a basis for identifying places with greater inequality, and for selecting the more effective actions that enable increasing environmental justice with respect to green areas.

Les intérêts des différents acteurs dans la gestion des ressources naturelles forestières. Etude de cas dans la région de Beforona, est de Madagascar | The different interests in the use of natural forest resources. Case study in the Beforona region in eastern Madagascar

2004 ◽  
Vol 155 (3-4) ◽  
pp. 89-96 ◽  
Author(s):  
Lala Razafy Fara
Keyword(s):  
Forest Canopy ◽  
Forest Resources ◽  
Natural Forest ◽  
The Other ◽  
Common Interest ◽  
Ressources Naturelles ◽  
Temporal And Spatial ◽  
The One

A number of different actors have interests in the management of natural forest resources in Madagascar. Our study sheds light on the temporal and spatial dynamism of the forest canopy along a sloping basin in the Beforona region by analysing the interests of the different parties. On the one hand, the aim of the farmers is to assure their survival by adopting simple crop rotation techniques in order to deplete forest resources as little as possible. On the other hand, the aims of the different actors are complementary in that they have a common interest: to reduce to a minimum the loss of natural forest and to improve the farmers' quality of life. Actors work within their own sectors according to their own capabilities without giving too much regard to the activities of others. Co-ordination of activities and a coherent exploitation is therefore lacking, and this leads to an extension of felling activity.

Contribution of stakeholder theory in the management of environmental quality of Algerian firms

2014 ◽  
Vol 25 (3) ◽  
pp. 335-351 ◽  
Author(s):  
Leila Boubaker ◽  
Mebarek Djebabra ◽  
Saadia Saadi
Keyword(s):  
Stakeholder Theory ◽  
Environmental Quality ◽  
Research Work ◽  
Field Studies ◽  
Suggested Approach ◽  
Environmental Behaviour ◽  
Content Type ◽  
The One

Purpose – The purpose of this paper is to highlight the environmental behaviour of the Algerian firms, on the one hand, and, on the other hand, showing how the involvement of stakeholders may change this behaviour. Design/methodology/approach – In order to set the environmental quality management (EQM), the paper has first been inspired by a mobilisation grid which has allowed the authors to evaluate the degree of dialogue between the stakeholders and the SONATRACH Group which constitutes the case study. Then, the various interviews held at the six sites of this group have allowed to determine the percentage rate of the stakeholders’ mobilisation. Findings – The suggested approach highlights two field studies. First, the aim was to check the mobilisation of the stakeholders of the SONATRACH Group. Then, in order to confirm the importance of mobilising the stakeholders for a better environmental integration, the authors had to evaluate the EQM by measuring the response rate of these stakeholders in percentages. Research limitations/implications – The contribution makes it possible to emphasise the contribution of stakeholder theory in environmental construction based on the mobilisation of stakeholders. Practical implications – In Algeria, some production sites are ranked as polluting. For this research work, the paper has chosen the sites of the SONATRACH multinational. Being conscious of the importance of integrating the environmental dimension, the group has carried out real changes by involving all stakeholders. Originality/value – The objective of this paper is to show the importance of mobilising the stakeholders who play a role in resolving economic and/or environmental issues to help the Algerian firms improve their environmental situation.

scholarly journals LIFE STRATEGIES OF MONOTOWN RESIDENTS: ATTRACTIVENESS OF RESIDENCE AND MIGRATION ATTITUDES

2018 ◽  
Vol 2018 (1) ◽  
pp. 34-41
Author(s):  
Н. Мосиенко ◽  
N. Mosienko ◽  
А. Черепанова ◽  
A. Cherepanova
Keyword(s):  
Urban Environment ◽  
Well Being ◽  
Life Strategies ◽  
Migration Patterns ◽  
Depth Interview ◽  
And Migration ◽  
The One ◽  
The City

<p>Residents of monotowns face a specific range of problems affecting their social well-being. The purpose of the study was to identify and describe the types of life strategies of monotown residents with a focus on the place of residence and the location of the attractiveness of the urban environment and migration attitudes in them. The study employed a case-study strategy of an in-depth interview with residents of Sayansk, a monotown that displays risks of socio-economic deterioration. To describe the context, the authors used statistical data on the population and migration of the Sayansk population, as well as historical chronicle of the town. Based on two indications (perception of the quality of the urban environment and the migration attitudes), the authors have constructed a typology of life strategies and described the related characteristics of inhabitants. The study shows that the life strategies of the inhabitants reveal, on the one hand, a spectrum of migration patterns (depending on the characteristics of the inhabitants), and, on the other hand, various degrees of satisfaction with the quality of the urban environment, which makes the city attractive or unattractive in the eyes of the population.</p>

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