scholarly journals A System Dynamics Model of Supply-Side Issues Influencing Beef Consumption in Nigeria

2020 ◽  
Vol 12 (8) ◽  
pp. 3241 ◽  
Author(s):  
Kelechukwu G. Odoemena ◽  
Jeffrey P. Walters ◽  
Holger Maximilian Kleemann

The per capita consumption of beef in Nigeria is reducing amidst a rising population that is dependent on beef as a major source of animal protein. In this paper, a system dynamics (SD) model was developed with the aim of testing exploratory policies aimed at reversing this trend. The simulations of various policy tests showed that, of all the policies tested, having a higher carcass yield seems to be the most efficient solution, but its feasibility faces some steep biological and ecological challenges. However, a combination of policies that cuts across the land–cattle–market nexus is necessary to obtain a consumption level that almost meets the World Health Organization (WHO) standards for recommended animal protein intake. Complex inter-linked systems, like beef production and consumption, require a systemic approach that considers dynamic feedback to avoid fixes that fail or shift the burden when making policy decisions.

Author(s):  
Otaigo Elisha ◽  
Akhmad Fauzi ◽  
Eva Anggraini

Indonesia biodiesel blending mandate emerged in 2006 driven by strengthening energy security while in parallel reducing and toning down the need for fossil fuels, strengthen the country's balance of payments and increasing environmental demand to reduce CO2 emission while leveraging the abundance of Crude Palm Oil as raw material. The purposes of this study were to analyze production and consumption of palm Oil-based biofuel. System dynamics model was developed based on 4 stages, Palm Oil Plantation, CPO Production, Palm Oil-based biofuel production and consumption and the validation of the model through Mean Absolute Percentage Error (MAPE) test confirms the correspondence between structures and phenomena. Baseline simulation analysis shows that there is no single strategy capable of improving the production and consumption of palm-based Palm Oil-based biofuel. We suggest that combined strategies such as government support hand in hand with industrial conversion efficiency, increase in palm oil on-farm productivity, 5% reduction in CPO export, Increase biodiesel production capacity and generally biodiesel utilization target cannot be achieved without the support from the government in form of subsidy which require additional IDR 409 a 15% increase in subsidy.


2010 ◽  
Vol 20 (2) ◽  
pp. 59-62
Author(s):  
Patrick Einzinger ◽  
Günther Zauner ◽  
G. Ganjeizadeh-Rouhani

Systems ◽  
2021 ◽  
Vol 9 (3) ◽  
pp. 56
Author(s):  
Urmila Basu Mallick ◽  
Marja H. Bakermans ◽  
Khalid Saeed

Using Indian free-ranging dogs (FRD) as a case study, we propose a novel intervention of social integration alongside previously proposed methods for dealing with FRD populations. Our study subsumes population dynamics, funding avenues, and innovative strategies to maintain FRD welfare and provide societal benefits. We develop a comprehensive system dynamics model, featuring identifiable parameters customizable for any management context and imperative for successfully planning a widescale FRD population intervention. We examine policy resistance and simulate conventional interventions alongside the proposed social integration effort to compare monetary and social rewards, as well as costs and unintended consequences. For challenging socioeconomic ecological contexts, policy resistance is best overcome by shifting priority strategically between social integration and conventional techniques. The results suggest that social integration can financially support a long-term FRD intervention, while transforming a “pest” population into a resource for animal-assisted health interventions, law enforcement, and conservation efforts.


Urban Science ◽  
2021 ◽  
Vol 5 (1) ◽  
pp. 19
Author(s):  
Robert Dare

This article presents a customized system dynamics model to facilitate the informed development of policy for urban heat island mitigation within the context of future climate change, and with special emphasis on the reduction of heat-related mortality. The model incorporates a variety of components (incl.: the urban heat island effect; population dynamics; climate change impacts on temperature; and heat-related mortality) and is intended to provide urban planning and related professionals with: a facilitated means of understanding the risk of heat-related mortality within the urban heat island; and location-specific information to support the development of reasoned and targeted urban heat island mitigation policy.


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