scholarly journals Examining the potential for energy-positive bulk-water infrastructure to provide long-term urban water security: A systems approach

2017 ◽  
Vol 143 ◽  
pp. 557-566 ◽  
Author(s):  
Oz Sahin ◽  
Raymond Siems ◽  
Russell G. Richards ◽  
Fernanda Helfer ◽  
Rodney A. Stewart
2018 ◽  
Vol 144 (12) ◽  
pp. 04018075 ◽  
Author(s):  
Kees C. H. van Ginkel ◽  
Arjen Y. Hoekstra ◽  
Joost Buurman ◽  
Rick J. Hogeboom

2019 ◽  
Vol 4 (2) ◽  
pp. 176-191
Author(s):  
Olivia Molden

Residents of the Kathmandu Valley in Nepal face growing water insecurities: too much at times and not enough at others coupled with constant worry about water quality and access. In this rapidly changing city, ancient water infrastructure is a critical mediator of urban water security. Drawing on six years of mixed methods research, I explain the vital role of water heritage for Kathmandu’s water security and urban development by critiquing three common assumptions about water heritage. First, so-called traditional water infrastructure is not a temporary alternative. Second, water heritage is not a living museum. Third, water heritage is not a panacea for modern woes. This article concludes with reflections on the potentials for Kathmandu’s water heritage to address persistent urban insecurities and inequities.


2020 ◽  
Vol 26 (6) ◽  
pp. 577-583
Author(s):  
L. A. Tuaeva ◽  
I. Z. Toguzova ◽  
S. K. Tokaeva

The presented study develops theoretical and methodological foundations for assessing the fiscal sustainability of the constituent entities of the Russian Federation in perspective.Aim. The study aims to develop a systems approach to assessing the fiscal sustainability of the constituent entities of the Russian Federation in the medium and long term.Tasks. The authors analyze the major approaches to assessing the fiscal sustainability of federal subjects and determine the significance of quantitative and qualitative assessment methods in the development of a methodology for assessing the fiscal sustainability of federal subjects in the medium and long term.Methods. This study uses scientific methods of cognition, analysis and synthesis, comparison and analogy, systems and institutional approaches to assess the fiscal sustainability of federal subjects.Results. The authors examine the major approaches to assessing the fiscal sustainability of federal subjects developed by Russian scientific schools and disciplines; approaches used by state and local authorities; approaches to assessing the fiscal sustainability of federal subjects used by international and national rating agencies; foreign experience. In general, this implies the development of a universal system of indicators for assessing the fiscal sustainability of federal subjects.Conclusions. It is substantiated that under the current conditions of new challenges, particularly in the context of the coronavirus pandemic, it is necessary to assess the long-term balance and sustainability of the budgets of federal subjects using a systems approach based on quantitative and qualitative methods, making allowance for the medium- and long-term prospects to make efficient management decisions at different levels of the economic system.


2020 ◽  
Vol 4 (Supplement_1) ◽  
pp. 88-88
Author(s):  
Mikaela Wheeler ◽  
Karen Abbey ◽  
Sandra Capra

Abstract As population’s age and the need for long term care (LTC) increases, so too does the focus on the costs to provide that care. Providing food, oral nutrition supplements and meals, can be a considerable expense to a home. The objective of this research was to develop a valid foodservice costing tool (FCT), to calculate the real cost of providing foods and meals in LTC. Current costing methodologies are not specific to LTC and do not account for all costs of a foodservice, including staff, procurement and nutrition supplements. An initial tool was developed using the systems approach in conjunction with literature and professional knowledge. This was piloted in real world contexts, using volunteer LTC homes. Four iterations of the tool were completed to assess its feasibility in calculating costs and useability. Managers were interviewed after completing the tool to gather an understanding of how the tool was interpreted and to refine completion. Following feedback, the resulting tool consists of nine sections, measuring both costs incurred in meal production and service as well as analysis of staff workloads. Preliminary results show consistency between homes within Australia, indicating that the true cost is much higher than that reported in the literature to date. The development of a comprehensive, usable tool which captures the total cost of foodservice allows homes to accurately report and understand costs from a systems level. This information can be used to demonstrate cost effectiveness of a foodservice and the potential to justify and plan future system changes.


2021 ◽  
pp. 1-13
Author(s):  
Vanessa Lucena Empinotti ◽  
Jessica Budds ◽  
Wendy Jepson ◽  
Nate Millington ◽  
Luciana Nicolau Ferrara ◽  
...  

2014 ◽  
Vol 27 ◽  
pp. 96-105 ◽  
Author(s):  
Robert I. McDonald ◽  
Katherine Weber ◽  
Julie Padowski ◽  
Martina Flörke ◽  
Christof Schneider ◽  
...  

2021 ◽  
Vol 321 ◽  
pp. 129004
Author(s):  
Nooshin Karimi Alavijeh ◽  
Mohammad Ali Falahi ◽  
Mohammad Taher Ahmadi Shadmehri ◽  
Narges Salehnia ◽  
Morten Andreas Dahl Larsen ◽  
...  
Keyword(s):  

Kybernetes ◽  
2014 ◽  
Vol 43 (1) ◽  
pp. 24-39 ◽  
Author(s):  
Salman Ahmad ◽  
Razman bin Mat Tahar

Purpose – The purpose of this paper is to provide an assessment of Malaysia's renewable capacity target. Malaysia relies heavily on fossil fuels for electricity generation. To diversify the fuel-mix, a technology-specific target has been set by the government in 2010. Considering the complexity in generation expansion, there is a dire need for an assessment model that can evaluate policy in a feedback fashion. The study also aims to expand policy evaluation literature in electricity domain by taking a dynamic systems approach. Design/methodology/approach – System dynamics modelling and simulation approach is used in this study. The model variables, selected from literature, are constituted into casual loop diagram. Later, a stock and flow diagram is developed by integrating planning, construction, operation, and decision making sub-models. The dynamic interactions between the sub-sectors are analysed based on the short-, medium- and long-term policy targets. Findings – Annual capacity constructions fail to achieve short-, medium- and long-term targets. However, the difference in operational capacity and medium- and long-term target are small. In terms of technology, solar photovoltaic (PV) attains the highest level of capacity followed by biomass. Research limitations/implications – While financial calculations are crucial for capacity expansion decisions, currently they are not being modelled; this study primarily focuses on system delays and exogenous components only. Practical implications – A useful model that offers regulators and investors insights on system characteristics and policy targets simultaneously. Originality/value – This paper provides a model for evaluating policy for renewable capacity expansion development in a dynamic context, for Malaysia.


2017 ◽  
Vol 28 ◽  
pp. 251-259 ◽  
Author(s):  
Jeanne L. Nel ◽  
David C. Le Maitre ◽  
Dirk J. Roux ◽  
Christine Colvin ◽  
Janis S. Smith ◽  
...  

2014 ◽  
Vol 4 (4) ◽  
pp. 287-293 ◽  
Author(s):  
G. O. Schreiner ◽  
R. C. van Ballegooyen ◽  
W. Osman

In the last decade, seawater reverse osmosis (SWRO) has come to be seen by policy-makers as a novel technology that will significantly advance water security in South African coastal regions. Water purveyors, from the private sector, local/district municipalities and provincial authorities, are undertaking studies to explore the feasibility of SWRO to meet growing demand and relieve mounting pressure on current bulk water supply infrastructure. With this in mind, it is suggested that national strategic planning should be introduced to present the opportunities and constraints of the desalination option within the national water and energy policy. In absence of this, piece-meal decisions will be made at local authority levels and the construction of SWRO plants will be determined by regional circumstances (e.g. drought) as opposed to national water policy agenda. This paper explores the value of such a strategy by considering the drivers of SWRO in South Africa, the risk of unplanned large-scale SWRO implementation (with a focus on environmental impacts) and the initial steps that could be taken toward a Strategic Environmental Assessment for SWRO in South Africa.


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