scholarly journals Geo-Spatially Based Analysis And Economic Feasiblity Evaluation Of Waste-To-Energy Facilities: A Case Study Of Local Government Areas Of Anambra State Of Nigeria

2021 ◽  
Author(s):  
Emmanuel Chukwuma ◽  
John Ojediran ◽  
Daniel Azikiwe Anizoba ◽  
Joseph Azikiwe Ubah ◽  
Pius Nwachukwu
Keyword(s):  
Local Government ◽  
Large Scale ◽  
Clean Energy ◽  
Economic Feasibility ◽  
Waste To Energy ◽  
Small Scale ◽  
Optimum Number ◽  
Organic Fraction ◽  
Anambra State

Abstract Access to affordable clean energy source as stipulated in UN SDG goal number 7 is important for the development and socio-economic well-being of people, the need for proper assessment of resources to achieve this goal is indisputable. The goal of this study is to assess the economic feasibility of utilizing organic fraction of Municipal Solid Wastes (MSWof) using a case study of 21 Local Government Areas (LGA) or Authority for Anambra State of Nigeria for waste to energy project. The quantity of organic fraction of MSW, energy recovery and optimum number of plants at the various LGAs was estimated. The result of the study indicates that about 198 tons maximum value of MSWof can be generated daily in Aguata LGA, with electric energy potential value of 545MW. The number of plants for the LGAs ranged from 10 to 50 and from 3 to 12 for small and medium scale plants. A large scale plant of about 50m3 can possibly be installed at all the LGAs, with a maximum of 4 plants in Idemili and Aguata LGA. The economic assessment based on Net Present Value (NPV) criteria shows poor economic feasibility for small scale plant, while NPV was positive for medium and large scale plants. The Internal Rate of Return (IRR) ranged from 0.32 to 0.94, with a general increase from small scale to large scale economic feasibility. It is suggested that the autonomy of the various LGAs in the country should serve as a major motivation in adopting bio-energy projects independently, and this study will serve as a decision toolkit in the appropriate scale to be adopted.

Modeling the Economic Feasibility of Large-Scale Net-Zero Water Management: A Case Study

2016 ◽  
Vol 88 (9) ◽  
pp. 811-823 ◽  
Author(s):  
Tianjiao Guo ◽  
James D. Englehardt ◽  
Howard J. Fallon
Keyword(s):  
Water Management ◽  
Large Scale ◽  
Economic Feasibility ◽  
Net Zero

scholarly journals Supply chain resilience in a developing country context: a case study on the interconnectedness of threats, strategies and outcomes

2017 ◽  
Vol 22 (6) ◽  
pp. 486-505 ◽  
Author(s):  
Benjamin Tukamuhabwa ◽  
Mark Stevenson ◽  
Jerry Busby
Keyword(s):  
Supply Chain ◽  
Developing Country ◽  
Large Scale ◽  
Empirical Studies ◽  
Small Scale ◽  
Supply Network ◽  
Catastrophic Events ◽  
Content Type ◽  
Supply Chain Resilience

Purpose In few prior empirical studies on supply chain resilience (SCRES), the focus has been on the developed world. Yet, organisations in developing countries constitute a significant part of global supply chains and have also experienced the disastrous effects of supply chain failures. The purpose of this paper is therefore to empirically investigate SCRES in a developing country context and to show that this also provides theoretical insights into the nature of what is meant by resilience. Design/methodology/approach Using a case study approach, a supply network of 20 manufacturing firms in Uganda is analysed based on a total of 45 interviews. Findings The perceived threats to SCRES in this context are mainly small-scale, chronic disruptive events rather than discrete, large-scale catastrophic events typically emphasised in the literature. The data reveal how threats of disruption, resilience strategies and outcomes are inter-related in complex, coupled and non-linear ways. These interrelationships are explained by the political, cultural and territorial embeddedness of the supply network in a developing country. Further, this embeddedness contributes to the phenomenon of supply chain risk migration, whereby an attempt to mitigate one threat produces another threat and/or shifts the threat to another point in the supply network. Practical implications Managers should be aware, for example, of potential risk migration from one threat to another when crafting strategies to build SCRES. Equally, the potential for risk migration across the supply network means managers should look at the supply chain holistically because actors along the chain are so interconnected. Originality/value The paper goes beyond the extant literature by highlighting how SCRES is not only about responding to specific, isolated threats but about the continuous management of risk migration. It demonstrates that resilience requires both an understanding of the interconnectedness of threats, strategies and outcomes and an understanding of the embeddedness of the supply network. Finally, this study’s focus on the context of a developing country reveals that resilience should be equally concerned both with smaller in scale, chronic disruptions and with occasional, large-scale catastrophic events.

scholarly journals A CASE STUDY ON THE HOUSEHOLD'S DECISION - MAKING ROLE IN SMALL-SCALE GOAT PRODUCTION IN NSUKKA LOCAL GOVERNMENT AREA OF ENUGU STATE, NIGERIA.

2021 ◽  
Vol 22 (2) ◽  
pp. 169-172
Author(s):  
A. R. Ajayi
Keyword(s):  
Health Care ◽  
Decision Making ◽  
Local Government ◽  
Herd Size ◽  
Local Government Area ◽  
Small Scale ◽  
Interview Schedule ◽  
Frequency Distributions ◽  
Enugu State

The study examined the household's decision-making role in small scale goat production in Nsukka Local Government Area of Enugu State, Nigeria. Data for the study were collected from 74 households through the use of interview schedule. Frequency distributions and percentages were used in the data analysis. The findings showed that production of manure for replenishing the lost soil fertility under continuous land use was the most valuable reason for rearing goats in the area. The husbands played a larger decision-making role than their wives for certain aspects (such as goat raising initiation; health care; herd-size; planning for organizing for breedings; and grass cutting) of goat production. Implications of the findings for extension practice were presented.

scholarly journals LANDSCAPE DESIGN FOR SUSTAINABILITY AND ECOSYSTEM SERVICES IN AN URBAN ENVIRONMENT: CASE STUDY OF TEHRAN AND HIS KAN RIVER

2020 ◽  
Author(s):  
Ilda Vagge ◽  
◽  
Gioia Maddalena Gibelli ◽  
Alessio Gosetti Poli ◽  
◽  
...  
Keyword(s):  
Ecosystem Services ◽  
Large Scale ◽  
Management Practices ◽  
Natural Capital ◽  
Landscape Design ◽  
Green Spaces ◽  
Small Scale ◽  
Design For Sustainability ◽  
Holistic Method

The authors, with the awareness that climate change affects and changes the landscape, wanted to investigate how these changes are occurring within the metropolitan area of Tehran. Trying to keep a holistic method that embraces different disciplines, reasoning from large scale to small scale, the authors tried to study the main problems related to water scarcity and loss of green spaces. Subsequently they dedicated themselves to the identification of the present and missing ecosystem services, so that they could be used in the best possible way as tools for subsequent design choices. From the analysis obtained, the authors have created a masterplan with the desire to ensure a specific natural capital, the welfare of ecosystem services, and at the same time suggest good water management practices. It becomes essential to add an ecological accounting to the economic accounting, giving dignity to the natural system and the ecosystem services that derive from it.

Nonhuman Actors, Hybrid Networks, and Conflicts Over Municipal Waste Incinerators

2012 ◽  
Vol 25 (2) ◽  
pp. 131-145 ◽  
Author(s):  
Natalia Magnani
Keyword(s):  
Network Theory ◽  
Large Scale ◽  
Actor Network Theory ◽  
Municipal Waste ◽  
Waste To Energy ◽  
Natural Material ◽  
Environmental Conflicts ◽  
Actor Network ◽  
Waste Incinerators

This article seeks to make an original contribution to the study of environmental conflicts on waste management infrastructures by applying concepts derived from actor-network theory in an empirical case study. The article is organized into three main parts. The first highlights how the bulk of the literature on the subject has systematically ignored the role of natural/material factors. The second part analyzes the theoretical and methodological contribution of actor-network theory to the analysis of environmental conflicts. Finally, the third part focuses on a case study from northern Italy concerning a conflict over a project for a large-scale municipal waste-to-energy incinerator. The author shows how the outcome of the conflict, namely the failure of the project notwithstanding a convergence of powerful interests, can only be fully understood by adopting a relational definition of agency that sees it as the effect of the process of building associations between humans and nonhumans.

Leveraging the Cloud for Large-Scale Software Testing – A Case Study

2012 ◽  
pp. 252-279 ◽  
Author(s):  
Anjan Pakhira ◽  
Peter Andras
Keyword(s):  
Large Scale ◽  
Analysis Data ◽  
System Level ◽  
Small Scale ◽  
Test Cases ◽  
Software Life Cycle ◽  
Technical Issues ◽  
Wide Scale ◽  
Set Up

Testing is a critical phase in the software life-cycle. While small-scale component-wise testing is done routinely as part of development and maintenance of large-scale software, the system level testing of the whole software is much more problematic due to low level of coverage of potential usage scenarios by test cases and high costs associated with wide-scale testing of large software. Here, the authors investigate the use of cloud computing to facilitate the testing of large-scale software. They discuss the aspects of cloud-based testing and provide an example application of this. They describe the testing of the functional importance of methods of classes in the Google Chrome software. The methods that we test are predicted to be functionally important with respect to a functionality of the software. The authors use network analysis applied to dynamic analysis data generated by the software to make these predictions. They check the validity of these predictions by mutation testing of a large number of mutated variants of the Google Chrome. The chapter provides details of how to set up the testing process on the cloud and discusses relevant technical issues.

Change

2020 ◽  
pp. 310-338
Author(s):  
Hans-Jörg Schmid
Keyword(s):  
Large Scale ◽  
Language Change ◽  
Small Scale ◽  
Systematic Description ◽  
Change Direction ◽  
History Of

This chapter discusses how the Entrenchment-and-Conventionalization Model explains language change. First, it is emphasized that not only innovation and variation, but also the frequency of repetition can serve as important triggers of change. Conventionalization and entrenchment processes can interact and be influenced by numerous forces in many ways, resulting in various small-scale processes of language change, which can stop, change direction, or even become reversed. This insight serves as a basis for the systematic description of nine basic modules of change which differ in the ways in which they are triggered and controlled by processes and forces. Large-scale pathways of change such as grammaticalization, lexicalization, pragmaticalization, context-induced change, or colloquialization and standardization are all explained by reference to these modules. The system is applied in a case study on the history of do-periphrasis.

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