scholarly journals Total mercury pathways from artisanal and small-scale gold mining in Sukabumi using system dynamics model

2021 ◽  
Vol 896 (1) ◽  
pp. 012048
Author(s):  
A Sunaryani ◽  
Y S Ridwan
Keyword(s):  
System Dynamics ◽  
Mercury Concentration ◽  
Gold Mining ◽  
Total Mercury ◽  
The Body ◽  
Small Scale ◽  
System Dynamics Model ◽  
Top Predator ◽  
Dynamics Model ◽  
Total Mercury Concentration

Abstract Artisanal and small-scale gold mining (ASGM) has been operated in Sukabumi District, West Java, Indonesia, for more than two decades. ASGM uses mercury in a ball mill gold ore processing, and the waste is released into the environment during and after this process. Previous studies have found that mercury-contaminated water, air, sediments, soil, and aquatic biota. This study aimed to predict and analyze total mercury pathways from ASGM in the air, water, sediment, fish, and humans using a system dynamics model. The results showed that the total mercury concentration in water was low and still meets the standard, while the total mercury concentration in sediment had already exceeded the standard. Biomagnification occurred to plankton feeder fish and top predator fish, but still below the level of tolerance mercury. Mercury levels in top predator fish and humans take a long time to exceed the standard (77 and 67 months after entering the body, respectively). The percentage error of 17.67% compared to the experimental data showed that the prediction of the developed system dynamics model is acceptable. Therefore, the model can be used to predict the total mercury pathways in the environment, especially in the ASGM area.

A System Dynamics Model of Health Insurance Financing in Austria

2010 ◽  
Vol 20 (2) ◽  
pp. 59-62
Author(s):  
Patrick Einzinger ◽  
Günther Zauner ◽  
G. Ganjeizadeh-Rouhani
Keyword(s):  
Health Insurance ◽  
System Dynamics ◽  
System Dynamics Model ◽  
Dynamics Model

scholarly journals Transforming a Liability into an Asset: A System Dynamics Model for Free-Ranging Dog Population Management

Systems ◽  
2021 ◽  
Vol 9 (3) ◽  
pp. 56
Author(s):  
Urmila Basu Mallick ◽  
Marja H. Bakermans ◽  
Khalid Saeed
Keyword(s):  
System Dynamics ◽  
Social Integration ◽  
Unintended Consequences ◽  
System Dynamics Model ◽  
Dynamics Model ◽  
Innovative Strategies ◽  
Management Context ◽  
Free Ranging ◽  
Social Rewards

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.

scholarly journals A System Dynamics Model to Facilitate the Development of Policy for Urban Heat Island Mitigation

Urban Science ◽  
2021 ◽  
Vol 5 (1) ◽  
pp. 19
Author(s):  
Robert Dare
Keyword(s):  
Climate Change ◽  
System Dynamics ◽  
Urban Heat Island ◽  
Future Climate Change ◽  
Specific Information ◽  
Heat Island ◽  
System Dynamics Model ◽  
Dynamics Model ◽  
Urban Heat ◽  
Related Mortality

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.

A system dynamics model for near-miss reporting in complex systems

2021 ◽  
Vol 142 ◽  
pp. 105368
Author(s):  
Nikhil Bugalia ◽  
Yu Maemura ◽  
Kazumasa Ozawa
Keyword(s):  
Complex Systems ◽  
System Dynamics ◽  
Near Miss ◽  
System Dynamics Model ◽  
Dynamics Model
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