scholarly journals An Agent-Based Modeling Framework for Simulating Human Exposure to Environmental Stresses in Urban Areas

Urban Science ◽  
2018 ◽  
Vol 2 (2) ◽  
pp. 36 ◽  
Author(s):  
Liang Yang ◽  
Peter Hoffmann ◽  
Jürgen Scheffran ◽  
Sven Rühe ◽  
Jana Fischereit ◽  
...  

Several approaches have been used to assess potential human exposure to environmental stresses and achieve optimal results under various conditions, such as for example, for different scales, groups of people, or points in time. A thorough literature review in this paper identifies the research gap regarding modeling approaches for assessing human exposure to environment stressors, and it indicates that microsimulation tools are becoming increasingly important in human exposure assessments of urban environments, in which each person is simulated individually and continuously. The paper further describes an agent-based model (ABM) framework that can dynamically simulate human exposure levels, along with their daily activities, in urban areas that are characterized by environmental stresses such as air pollution and heat stress. Within the framework, decision-making processes can be included for each individual based on rule-based behavior in order to achieve goals under changing environmental conditions. The ideas described in this paper are implemented in a free and open source NetLogo platform. A basic modeling scenario of the ABM framework in Hamburg, Germany, demonstrates its utility in various urban environments and individual activity patterns, as well as its portability to other models, programs, and frameworks. The prototype model can potentially be extended to support environmental incidence management through exploring the daily routines of different groups of citizens, and comparing the effectiveness of different strategies. Further research is needed to fully develop an operational version of the model.

Author(s):  
Liang Emlyn Yang ◽  
Peter Hoffmann ◽  
Jürgen Scheffran ◽  
Sven Rühe ◽  
Jana Fischereit ◽  
...  

The importance of predicting the exposure to environmental hazards is highlighted by issues like global climate change, public health problems caused by environment stresses, and property damages and depreciations. Several approaches have been used to assess potential exposure and achieve optimal results under various conditions, for example, for different scales, groups of people, or certain points in time. Micro-simulation tools are becoming increasingly important in human exposure assessment, where each person is simulated individually and continuously. This paper describes an agent-based model (ABM) framework that can dynamically simulate human exposure levels, along with their daily activities, in urban areas that are characterized by environmental stresses such as air pollution and heat stress. Within the framework, decision making processes can be included for each individual based on rule-based behavior to achieve goals under changing environmental conditions. The ideas described in this paper are implemented in a free and open source NetLogo platform. A simplified modeling scenario of the ABM framework in Hamburg, Germany, further demonstrates its utility in various urban environments and individual activity patterns, and portability to other models, programs and frameworks. The prototype model can potentially be extended to support environmental incidence management by exploring the daily routines of different groups of citizens and compare the effectiveness of different strategies. Further research is needed to fully develop an operational version of the model.


2021 ◽  
Vol 11 (5) ◽  
pp. 2057
Author(s):  
Abdallah Namoun ◽  
Ali Tufail ◽  
Nikolay Mehandjiev ◽  
Ahmed Alrehaili ◽  
Javad Akhlaghinia ◽  
...  

The use and coordination of multiple modes of travel efficiently, although beneficial, remains an overarching challenge for urban cities. This paper implements a distributed architecture of an eco-friendly transport guidance system by employing the agent-based paradigm. The paradigm uses software agents to model and represent the complex transport infrastructure of urban environments, including roads, buses, trolleybuses, metros, trams, bicycles, and walking. The system exploits live traffic data (e.g., traffic flow, density, and CO2 emissions) collected from multiple data sources (e.g., road sensors and SCOOT) to provide multimodal route recommendations for travelers through a dedicated application. Moreover, the proposed system empowers the transport management authorities to monitor the traffic flow and conditions of a city in real-time through a dedicated web visualization. We exhibit the advantages of using different types of agents to represent the versatile nature of transport networks and realize the concept of smart transportation. Commuters are supplied with multimodal routes that endeavor to reduce travel times and transport carbon footprint. A technical simulation was executed using various parameters to demonstrate the scalability of our multimodal traffic management architecture. Subsequently, two real user trials were carried out in Nottingham (United Kingdom) and Sofia (Bulgaria) to show the practicality and ease of use of our multimodal travel information system in providing eco-friendly route guidance. Our validation results demonstrate the effectiveness of personalized multimodal route guidance in inducing a positive travel behavior change and the ability of the agent-based route planning system to scale to satisfy the requirements of traffic infrastructure in diverse urban environments.


2021 ◽  
Vol 12 (2) ◽  
pp. 73
Author(s):  
Dita Novizayanti ◽  
Eko Agus Prasetio ◽  
Manahan Siallagan ◽  
Sigit Puji Santosa

Currently, the adoption of electric vehicles (EV) draws much attention, as the environmental issue of reducing carbon emission is increasing worldwide. However, different countries face different challenges during this transition, particularly developing countries. This research aims to create a framework for the transition to EV in Indonesia through Agent-Based Modeling (ABM). The framework is used as the conceptual design for ABM to investigate the effect of agents’ decision-making processes at the microlevel into the number of adopted EV at the macrolevel. The cluster analysis is equipped to determine the agents’ characteristics based on the categories of the innovation adopters. There are 11 significant variables and four respondents’ clusters: innovators, early majority, late majority, and the uncategorized one. Moreover, Twitter data analytics are utilized to investigate the information engagement coefficient based on the agents’ location. The agents’ characteristics which emerged from this analysis framework will be used as the fundamental for investigating the effect of agents’ specific characteristics and their interaction through ABM for further research. It is expected that this framework will enable the discovery of which incentive scheme or critical technical features effectively increase the uptake of EV according to the agents’ specific characteristics.


2020 ◽  
Vol 6 (1) ◽  
Author(s):  
Margarita Gil-Fernández ◽  
Robert Harcourt ◽  
Thomas Newsome ◽  
Alison Towerton ◽  
Alexandra Carthey

Abstract With urban encroachment on wild landscapes accelerating globally, there is an urgent need to understand how wildlife is adapting to anthropogenic change. We compared the behaviour of the invasive red fox (Vulpes vulpes) at eight urban and eight peri-urban areas of Sydney, Australia. We observed fox behaviour around a lure and compared fox activity patterns to those of potential prey and to two domestic predators (dogs—Canis lupus familiaris and cats—Felis catus). We assessed the influence of site type, vegetation cover, and distance from habitation on fox behaviour, and compared the temporal activity patterns of urban and peri-urban red foxes. Urban red foxes were marginally more nocturnal than those in peri-urban areas (88% activity overlap). There was greater overlap of red fox activity patterns with introduced mammalian prey in urban areas compared with peri-urban areas (90% urban vs 84% peri-urban). Red fox temporal activity overlapped 78% with cats, but only 20% with dogs, across both site types. The high degree of overlap with cats and introduced mammalian prey is most likely explained by the nocturnal behaviour of these species, while pet dogs are generally kept in yards or indoors at night. The behavioural differences we documented by urban red foxes suggest they may adapt to human modifications and presence, by being more nocturnal and/or more confident in urban areas.


Author(s):  
E. Ebenhoh

This chapter introduces an agent-based modeling framework for reproducing micro behavior in economic experiments. It gives an overview of the theoretical concept which forms the foundation of the framework as well as short descriptions of two exemplary models based on experimental data. The heterogeneous agents are endowed with a number of attributes like cooperativeness and employ more or less complex heuristics during their decision-making processes. The attributes help to distinguish between agents, and the heuristics distinguish between behavioral classes. Through this design, agents can be modeled to behave like real humans and their decision making is observable and traceable, features that are important when agent-based models are to be used in collaborative planning or participatory model-building processes.


2020 ◽  
Author(s):  
Sascha Hokamp ◽  
Sven Rühe ◽  
Jürgen Scheffran

<p>The goal of environmental exposure modelling is to link fundamental human activities with stress via the environment. Stress is here defined as environmental conditions negatively affecting human health and well-being. Especially in urban areas, humans can be exposed to multiple stressors such as air pollution, noise (e.g. traffic), and heat. The importance of being able to predict the exposure level in urban areas is increasing due to ongoing urbanization and global climate change. For instance, in Germany annual Greenhouse Gas (GHG) emissions have been reduced by 28% from 1990 to 2014 but contributions by the transport sector have been quite stable (from 0.163 GtCO2Equivalents in 1990 to 0.160 GtCO2Equivalents in 2014 (Umweltbundesamt, 2016). Yang et al. (2018) provides a stylized agent-based model of human exposure to environmental stressors (heat, rain, NO2) for Hamburg, Germany. Within this ABM, the changing exposure to environmental stressors is analyzed for citizens as a function of time and location. The population is classified into different archetypes; they range from young, single students to families with children to old, rich and single persons. While their choice of transportation is a function of exposure, commuting time and costs, each agent has different preferences and different rates to adapt to changing environmental conditions. The agents are moving in multiple layers of housing (e.g. residential buildings) and infrastructure (e.g. streets, subway). Depending on the agent types, bike, car or public transport is chosen as the preferred mean of transport. However, Yang et al. (2018) consider stylized agent-based dynamics without any interaction among the agents. We provide a multi-agent docking study of human exposure to environmental stressors implemented in Netlogo and find distributional and relational equivalence (Axtell et al., 1996, Hokamp et al. 2018) to Yang et al. (2018). To put it differently, we analyze interacting individual heterogeneous agents in an actual urban environment. Results give information about the mean of transportation with the lowest exposure and how very low costs for public transport affect choices of transportation and so the road traffic. Further, the results may be used by policy makers and citizens (e.g. via mobile devices using an app) to improve environmental quality of life.</p><p><br>References</p><p>Axtell, R., Axelrod, R., Epstein, J.M., and Cohen, M.D. (1996) Aligning simulation models: a case study and results. Computational & Mathematical Organization Theory, 1 (2), 123–141.</p><p>Hokamp, S., Gulyas, L., Koehler, M. and Wijesinghe, S. (2018), Agent-based Modelling and Tax Evasion: Theory and Application, 3-35, Hoboken, NJ, John Wiley & Sons Ltd.</p><p>Umweltbundesamt (2014) Submission under the United Nations Framework Convention on Climate Change and the Kyoto Protocol 2016 – National Inventory Report for the German Greenhouse Gas Inventory 1990-2014.</p><p>Yang, L. E., Hoffmann, P., Scheffran, J. , Rühe, S. , Fischereit, J. and Gasser, I. (2018), An Agent-Based Modeling Framework for Simulating Human Exposure to Environmental Stresses in Urban Areas, Urban Science, 2, 36.</p>


Energies ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3949
Author(s):  
Marialisa Nigro ◽  
Marina Ferrara ◽  
Rosita De Vincentis ◽  
Carlo Liberto ◽  
Gaetano Valenti

This study focuses on a modeling framework to support mobility planners and energy providers in the sustainable development of electric mobility in urban areas. Specifically, models are provided to simulate measures for the optimal management of energy demand and thoughtful planning of charging infrastructures in order to avoid congestion on the power grid. The measures, and consequently the models, are classified according to short-term initiatives based on multimodality between electric vehicles and public transport (Park and Ride), as well as medium to long-term initiatives based on the development of an energy-oriented land use of the city. All the models are data-driven, and different sets of floating car data available for the city of Rome (Italy) have been exploited for this aim. The models are currently being implemented in an agent-based simulator for electric urban mobility adopted by the National Agency for Energy and Environment in Italy (ENEA).


Author(s):  
Philip James

The focus of this chapter is an examination of the diversity of living organisms found within urban environments, both inside and outside buildings. The discussion commences with prions and viruses before moving on to consider micro-organisms, plants, and animals. Prions and viruses cause disease in plants and animals, including humans. Micro-organisms are ubiquitous and are found in great numbers throughout urban environments. New technologies are providing new insights into their diversity. Plants may be found inside buildings as well as in gardens and other green spaces. The final sections of the chapter offer a discussion of the diversity of animals that live in urban areas for part or all of their life cycle. Examples of the diversity of life in urban environments are presented throughout, including native and non-native species, those that are benign and deadly, and the common and the rare.


Energies ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3860
Author(s):  
Priyanka Shinde ◽  
Ioannis Boukas ◽  
David Radu ◽  
Miguel Manuel de Manuel de Villena ◽  
Mikael Amelin

In recent years, the vast penetration of renewable energy sources has introduced a large degree of uncertainty into the power system, thus leading to increased trading activity in the continuous intra-day electricity market. In this paper, we propose an agent-based modeling framework to analyze the behavior and the interactions between renewable energy sources, consumers and thermal power plants in the European Continuous Intra-day (CID) market. Additionally, we propose a novel adaptive trading strategy that can be used by the agents that participate in CID market. The agents learn how to adapt their behavior according to the arrival of new information and how to react to changing market conditions by updating their willingness to trade. A comparative analysis was performed to study the behavior of agents when they adopt the proposed strategy as opposed to other benchmark strategies. The effects of unexpected outages and information asymmetry on the market evolution and the market liquidity were also investigated.


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