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Ahmadi Achachlouei, MohammadORCID iD iconorcid.org/0000-0002-7761-2350
Publications (10 of 19) Show all publications
Ahmadi Achachlouei, M. & Hilty, L. M. (2016). Using Systems Thinking and System Dynamics Modeling to Understand Rebound Effects. In: Jorge Marx Gómez, Michael Sonnenschein, Andreas Winter, Ute Vogel, Barbara Rapp Nils Giesen (Ed.), Advances And New Trends In Environmental And Energy Informatics: (pp. 237-255). Cham, Switzerland: Springer Publishing Company
Open this publication in new window or tab >>Using Systems Thinking and System Dynamics Modeling to Understand Rebound Effects
2016 (English)In: Advances And New Trends In Environmental And Energy Informatics / [ed] Jorge Marx Gómez, Michael Sonnenschein, Andreas Winter, Ute Vogel, Barbara Rapp Nils Giesen, Cham, Switzerland: Springer Publishing Company, 2016, p. 237-255Chapter in book (Refereed)
Abstract [en]

Processes leading to an increase of demand for a resource as a consequence of increasing the efficiency of using this resource in production or consumption are known as (direct) rebound effects. Rebound effects at micro and macro levels tend to offset the reduction in resource consumption enabled by progress in efficiency. Systems thinking and modeling instruments such as causal loop diagrams and System Dynamics can be used to conceptualize the structure of this complex phenomenon and also to communicate model-based insights. In passenger transport, the rebound effect can be invoked by increased cost efficiency (direct economic rebound) and/or increase in speed (time rebound). In this paper we review and compare two existing models on passenger transport—including a model on the role of information and communication technology—with regard to the feedback loops used to conceptualize rebound effects.

Place, publisher, year, edition, pages
Cham, Switzerland: Springer Publishing Company, 2016
Series
Progress in IS, ISSN 2196-8705
Keyword
Rebound effect, energy efficiency, systems thinking, systems modeling, system dynamics, causal loop diagrams, passenger transport, ICT, time rebound, direct rebound
National Category
Other Environmental Engineering
Research subject
Industrial Ecology; Planning and Decision Analysis; Economics; Information and Communication Technology
Identifiers
urn:nbn:se:kth:diva-165055 (URN)10.1007/978-3-319-23455-7_13 (DOI)000381426600013 ()978-3-319-23455-7 (ISBN)978-3-319-23454-0 (ISBN)
External cooperation:
Projects
Methods for sustainability assessments of ICT
Funder
VINNOVA
Note

QC 20150518

Available from: 2015-04-22 Created: 2015-04-22 Last updated: 2016-09-12Bibliographically approved
Ahmadi, L., Young, S. B., Fowler, M., Fraser, R. A. & Ahmadi Achachlouei, M. (2015). A cascaded life cycle: reuse of electric vehicle lithium-ion battery packs in energy storage systems. The International Journal of Life Cycle Assessment
Open this publication in new window or tab >>A cascaded life cycle: reuse of electric vehicle lithium-ion battery packs in energy storage systems
Show others...
2015 (English)In: The International Journal of Life Cycle Assessment, ISSN 0948-3349, E-ISSN 1614-7502Article in journal (Refereed) Published
Abstract [en]

Purpose

Lithium-ion (Li-ion) battery packs recovered from end-of-life electric vehicles (EV) present potential technological, economic and environmental opportunities for improving energy systems and material efficiency. Battery packs can be reused in stationary applications as part of a “smart grid”, for example to provide energy storage systems (ESS) for load leveling, residential or commercial power. Previous work on EV battery reuse has demonstrated technical viability and shown energy efficiency benefits in energy storage systems modeled under commercial scenarios. The current analysis performs a life cycle assessment (LCA) study on a Li-ion battery pack used in an EV and then reused in a stationary ESS.

Methods

A complex functional unit is used to combine energy delivered by the battery pack from the mobility function and the stationary ESS. Various scenarios of cascaded “EV mobility plus reuse in stationary clean electric power scenarios” are contrasted with “conventional system mobility with internal combustion engine vehicles plus natural gas peaking power.” Eight years are assumed for first use; with 10 years for reuse in the stationary application. Operational scenarios and environmental data are based on real time-of-day and time-of-year power use. Additional data from LCA databases are utilized. Ontario, Canada, is used as the geographic baseline; analysis includes sensitivity to the electricity mix and battery degradation. Seven environmental categories are assessed using ReCiPe.

Results and discussion

Results indicate that the manufacturing phase of the Li-ion battery will still dominate environmental impacts across the extended life cycle of the pack (first use in vehicle plus reuse in stationary application). For most impact categories, the cascaded use system appears significantly beneficial compared to the conventional system. By consuming clean energy sources for both use and reuse, global and local environmental stress reductions can be supported. Greenhouse gas advantages of vehicle electrification can be doubled by extending the life of the EV batteries, and enabling better use of off-peak low-cost clean electricity or intermittent renewable capacity. However, questions remain concerning implications of long-duration use of raw material resources employed before potential recycling.

Conclusions

Li-ion battery packs present opportunities for powering both mobility and stationary applications in the necessary transition to cleaner energy. Battery state-of-health is a considerable determinant in the life cycle performance of a Li-ion battery pack. The use of a complex functional unit was demonstrated in studying a component system with multiple uses in a cascaded application.

Keyword
Electric vehicle Energy storage systems (ESS), Life cycle assessment (LCA), Li-ion battery, Resource efficiency, Reuse, Second use
National Category
Other Environmental Engineering
Research subject
Industrial Ecology; Energy Technology
Identifiers
urn:nbn:se:kth:diva-173252 (URN)10.1007/s11367-015-0959-7 (DOI)000391386600010 ()2-s2.0-84940932068 (Scopus ID)
Note

QC 20170202

Available from: 2015-09-08 Created: 2015-09-08 Last updated: 2017-12-04Bibliographically approved
Ahmadi Achachlouei, M. (2015). Exploring the Effects of ICT on Environmental Sustainability: From Life Cycle Assessment to Complex Systems Modeling. (Doctoral dissertation). Stockholm: KTH Royal Institute of Technology
Open this publication in new window or tab >>Exploring the Effects of ICT on Environmental Sustainability: From Life Cycle Assessment to Complex Systems Modeling
2015 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

The production and consumption of information and communication technology (ICT) products and services continue to grow worldwide. This trend is accompanied by a corresponding increase in electricity use by ICT, as well as direct environmental impacts of the technology. Yet a more complicated picture of ICT’s effects is emerging. Positive indirect effects on environmental sustainability can be seen in substitution and optimization (enabling effects), and negative indirect effects can be seen in additional demand due to efficiency improvements (rebound effects).

A variety of methods can be employed to model and assess these direct and indirect effects of ICT on environmental sustainability. This doctoral thesis explores methods of modeling and assessing environmental effects of ICT, including electronic media. In a series of five studies, three methods were at times applied in case studies and at others analyzed theoretically. These methods include life cycle assessment (LCA) and complex systems modeling approaches, including System Dynamics (SD) and agent-based (AB) modeling.

The first two studies employ the LCA approach in a case study of an ICT application, namely, the tablet edition of a Swedish design magazine. The use of tablets has skyrocketed in recent years, and this phenomenon has been little studied to date. Potential environmental impacts of the magazine’s tablet edition were assessed and compared with those of the print edition. The tablet edition’s emerging version (which is marked by a low number of readers and low reading time per copy) resulted in higher potential environmental impacts per reader than did the print edition. However, the mature tablet edition (with a higher number of readers and greater reading time per copy) yielded lower impacts per reader in half the ten impact categories assessed.

While previous studies of electronic media have reported that the main life-cycle contributor to environmental impacts is the use phase (which includes operational electricity use as well as the manufacture of the electronic device), the present study did not support those findings in all scenarios studied in this thesis. Rather, this study found that the number of readers played an important role in determining which life-cycle phase had the greatest impacts. For the emerging version, with few readers, content production was the leading driver of environmental impacts. For the mature version, with a higher number of readers, electronic storage and distribution were the major contributors to environmental impacts. Only when there were many readers but low overall use of the tablet device was the use phase the main contributor to environmental impacts of the tablet edition of the magazine.

The third study goes beyond direct effects at product- and service-level LCAs, revisiting an SD simulation study originally conducted in 2002 to model indirect environmental effects of ICT in 15 European countries for the period 2000-2020. In the current study, three scenarios of the 2002 study were validated in light of new empirical data from the period 2000–2012. A new scenario was developed to revisit the quantitative and qualitative results of the original study. The results showed, inter alia, that ICT has a stimulating influence on total passenger transport, for it makes it more cost- and time-efficient (rebound effects).

The modeling mechanism used to represent this rebound effect is further investigated in the fourth study, which discusses the feedback loops used to model two types of rebound effects in passenger transport (direct economic rebound and time rebound). Finally, the role of systems thinking and modeling in conceptualizing and communicating the dynamics of rebound effects is examined.

The aim of the fifth study was to explore the power of systems modeling and simulation to represent nonlinearities of the complex and dynamic systems examined elsewhere in this thesis. That study reviews previous studies that have compared the SD and AB approaches and models, summarizing their purpose, methodology, and results, based on certain criteria for choosing between SD and AB approaches. The transformation procedure used to develop an AB model for purposes of comparison with an SD model is also explored.

In conclusion, first-order or direct environmental effects of ICT production, use, and disposal can be assessed employing an LCA method. This method can also be used to assess second-order or enabling effects by comparing ICT applications with conventional alternatives. However, the assessment of enabling effects can benefit from systems modeling methods, which are able to formally describe the drivers of change, as well as the dynamics of complex social, technical, and environmental systems associated with ICT applications. Such systems methods can also be used to model third-order or rebound effects of efficiency improvements by ICT.

Abstract [sv]

Den ökande produktionen och konsumtionen av produkter och tjänster inom informations- och kommunikationsteknik (IKT) leder till en ökning av den globala elanvändningen samt direkta miljökonsekvenser kopplade till IKT. Men IKT har även indirekta miljömässiga effekter. Dessa kan vara positiva till exempel genom substitutions- och optimeringseffekter eller negativa genom att till exempel ge upphov till ytterligare efterfrågan på grund av effektivisering (så kallade reboundeffekter).

Olika metoder kan användas för att modellera och bedöma både direkta och indirekta effekter av IKT. Syftet med denna avhandling är att undersöka metoder för modellering samt att studera miljöeffekter av IKT och elektronisk media med hjälp av livscykelanalys (LCA) och även modellering av komplexa och dynamiska system, samt simuleringsteknik, så som System Dynamics (SD) och agentbaserad (AB) modellering. Avhandlingen omfattar fem artiklar (artikel I-V).

Artikel I & II beskriver resultaten från en fallstudie där miljöeffekter kopplade till en svensk tidskrift studeras med LCA. Tidskriftens version för surfplatta samt motsvarande tryckta version studeras och jämförs.

Artikel III går ett steg vidare från produktnivåns LCA. Artikeln återkopplar till en SD simuleringsstudie som ursprungligen genomfördes under 2002. Simuleringsstudien gällde framtida miljöeffekter av IKT i 15 europeiska länder med tidspespektivet 2000-2020. I artikeln valideras tre scenarier från simuleringsstudien med hjälp av nya empiriska data från 2000-2012 och ett nytt scenario modelleras. Kvantitativa och kvalitativa resultat från den ursprungliga studien diskuteras. Till exempel visar artikel III att IKT har en stimulerande effekt på den totala persontrafiken genom att göra den mer kostnads- och tidseffektiv (reboundeffekt).

Modelleringsmekanismen som används för att representera denna reboundeffekt diskuteras vidare i artikel IV. Artikeln belyser och diskuterar den återkopplingsslinga (feedback-loop) som används för att modellera två typer av reboundeffekter kopplade till persontrafik (direkt ekonomisk rebound och tidsrelaterad rebound) samt jämför med en tidigare studie. Artikel IV behandlar också den roll systemtänkande och modellering kan spela i konceptualisering och kommunikation av reboundeffekters dynamik.

För att ytterligare undersöka systemmodelleringens och simuleringens möjligheter att representera icke-linjära komplexa och dynamiska system (exempel på sådana diskuteras i artikel III och IV), sammanställer artikel V tidigare studier som jämför SD och AB-metoder och -modeller.  Studiernas mål och metod summeras och resultaten med avseende på vilka kriterier som presenteras för att välja mellan SD och AB sammanställs. Även processen för att omvandla en befintlig SD-modell till en AB-modell beskrivs.

Avhandlingens slutsats är att LCA och systemmodelleringsmetoder kan vara användbara för att studera IKTs direkta effekter så väl som indirekta effekter på miljön.

Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2015. p. 66
Series
TRITA-INFRA-FMS, ISSN 1652-5442 ; 2015:03
Keyword
Information and communication technology (ICT), sustainability assessment, electronic media, tablet, print media, magazine, Internet, energy, environmental impact, life cycle assessment (LCA), System Dynamics, agent-based modeling, differential equations, simulation modeling, complex and dynamic systems modeling, Informations- och kommunikationsteknik (IKT), hållbarhetsbedömning, elektroniska media, surfplatta, tryckta media, tidskrift, Internet, energi, miljöpåverkan, simulering, differentialekvationer, modellering av komplexa och dynamiska system, System Dynamics, livscykelanalys (LCA), agentbaserad modellering
National Category
Other Environmental Engineering
Research subject
Planning and Decision Analysis; Information and Communication Technology; Industrial Ecology; Applied and Computational Mathematics
Identifiers
urn:nbn:se:kth:diva-171443 (URN)978-91-7595-653-4 (ISBN)
Public defence
2015-09-04, Sal F3, Lindstedtsvägen 26, KTH, Stockholm, 09:00 (English)
Opponent
Supervisors
Note

QC 20150813

Available from: 2015-08-13 Created: 2015-08-03 Last updated: 2015-08-13Bibliographically approved
Hischier, R., Coroama, V. C., Schien, D. & Ahmadi Achachlouei, M. (2015). Grey Energy and Environmental Impacts of ICT Hardware. In: Lorenz M. Hilty, Bernard Aebischer (Ed.), ICT Innovations for Sustainability: (pp. 171-189). Switzerland: Springer
Open this publication in new window or tab >>Grey Energy and Environmental Impacts of ICT Hardware
2015 (English)In: ICT Innovations for Sustainability / [ed] Lorenz M. Hilty, Bernard Aebischer, Switzerland: Springer, 2015, p. 171-189Chapter in book (Refereed)
Abstract [en]

Direct energy consumption of ICT hardware is only “half the story.” In order to get the “whole story,” energy consumption during the entire life cycle has to be taken into account. This chapter is a first step toward a more comprehensive picture, showing the “grey energy” (i.e., the overall energy requirements) as well as the releases (into air, water, and soil) during the entire life cycle of exemplary ICT hardware devices by applying the life cycle assessment method. The examples calculated show that a focus on direct energy consumption alone fails to take account of relevant parts of the total energy consumption of ICT hardware as well as the relevance of the production phase. As a general tendency, the production phase is more and more important the smaller (and the more energy-efficient) the devices are. When in use, a tablet computer is much more energy-efficient than a desktop computer system with its various components, so its production phase has a much greater relative importance. Accordingly, the impacts due to data transfer when using Internet services are also increasingly relevant the smaller the end-user device is, reaching up to more than 90 % of the overall impact when using a tablet computer.

Place, publisher, year, edition, pages
Switzerland: Springer, 2015
Series
Advances in Intelligent Systems and Computing, ISSN 2194-5357 ; 310
Keyword
Life Cycle Assessment, Sustainability, Grey Energy, Cumulative Energy Demand, ICT Hardware, Information and Communication Technology
National Category
Other Environmental Engineering Information Systems, Social aspects Other Materials Engineering
Identifiers
urn:nbn:se:kth:diva-148967 (URN)10.1007/978-3-319-09228-7_10 (DOI)2-s2.0-84927629296 (Scopus ID)978-3-319-09228-7 (ISBN)
Note

QC 20140825

Available from: 2014-08-15 Created: 2014-08-15 Last updated: 2014-08-25Bibliographically approved
Ahmadi Achachlouei, M. & Moberg, Å. (2015). Life cycle assessment of a magazine: part 2: A comparison of print and tablet editions. Journal of Industrial Ecology, 19(4)
Open this publication in new window or tab >>Life cycle assessment of a magazine: part 2: A comparison of print and tablet editions
2015 (English)In: Journal of Industrial Ecology, ISSN 1088-1980, E-ISSN 1530-9290, Vol. 19, no 4Article in journal (Refereed) Published
Abstract [en]

The rapid development of information and communications technology (ICT) is providing new ways to access media content. Electronic media are sometimes more advantageous from an environmental perspective than paper-based media solutions, but ICT-based media can also bring environmental burdens. This study compared the potential environmental impacts in a life cycle perspective of a print edition of a magazine and that of its electronic edition read on a tablet device. Important objectives were to identify activities giving rise to the main environmental impacts for both the print and tablet editions, determine the key factors influencing these impacts, and address data gaps and uncertainties. A detailed assessment of the tablet edition is provided in a previous article (part 1), whereas this article compares it with the print edition. The methodology used was life cycle assessment and the environmental impacts assessed included climate change, cumulative energy/exergy demand, metal depletion, photochemical oxidant formation, particulate matter formation, terrestrial acidification, freshwater eutrophication, marine eutrophication, and fossil depletion. Use of different functional units to compare the print and tablet editions of the magazine resulted in different relative environmental impacts. In addition, emerging (low number of readers and low reading time per copy) and mature (higher number of readers and higher reading time per copy) tablet editions yielded varying results. The emerging tablet edition resulted in higher potential environmental impacts per reader than the print edition, but the mature tablet edition yielded lower impacts per reader in half the impact categories assessed. This illustrates the importance of spreading the environmental impacts over a large number of readers. The electricity mix used in product system processes did not greatly affect the results of tablet/print comparisons, but overall number of readers for the tablet edition, number of readers per copy for the print edition, file size, and degree of use of the tablet device proved crucial for the comparison results.

Keyword
electronic media, tablet computer, print media, magazine, information and communication technology (ICT), Internet, energy use, environmental impacts, life cycle assessment (LCA).
National Category
Other Environmental Engineering
Identifiers
urn:nbn:se:kth:diva-118834 (URN)10.1111/jiec.12229 (DOI)000362594200007 ()2-s2.0-84942294108 (Scopus ID)
Projects
CESC - Media and Sustainability
Note

QC 20151103

Available from: 2013-02-28 Created: 2013-02-28 Last updated: 2017-12-06Bibliographically approved
Ahmadi Achachlouei, M., Moberg, Å. & Hochschorner, E. (2015). Life Cycle Assessment of a Magazine: Part I: Tablet Edition in Emerging and Mature States. Journal of Industrial Ecology, 19(4)
Open this publication in new window or tab >>Life Cycle Assessment of a Magazine: Part I: Tablet Edition in Emerging and Mature States
2015 (English)In: Journal of Industrial Ecology, ISSN 1088-1980, E-ISSN 1530-9290, Vol. 19, no 4Article in journal (Refereed) Published
Abstract [en]

Information and communication technology (ICT) is providing new ways to access media content. ICT has environmental benefits and burdens. The overall goal of the present study was to assess the environmental impacts of production and consumption of magazines read on tablets from a life cycle perspective. Important goals were to identify the activities giving rise to the main impacts and the key factors influencing the overall environmental impacts. Data gaps and uncertainties were also addressed. The results are compared against those for the print edition of the magazine in a separate article (part 2). The methodology used in the study was life cycle assessment. The environmental impacts assessed included climate change, cumulative energy/exergy demand, metal depletion, photochemical oxidant formation, particulate matter formation, terrestrial acidification, freshwater/marine eutrophication, fossil depletion, human toxicity, and ecotoxicity. The results indicate that content production can be the major contributor to environmental impacts if readers are few (as for the emerging version of the magazine studied). Assuming more readers (more mature version) or a larger file size for the tablet magazine, electronic storage and distribution may be the major contributor. Thus, in contrast to previous studies on electronic media, which reported a dominant impact of the use phase, this study found a higher impact for content production (emerging version) and electronic storage and distribution (mature version). However, with inefficient, low overall use of the tablet with a mature version of the tablet magazine, the greatest impact was shown to come from the reading activity (i.e., the use phase). In conclusion, the relative impacts of the tablet magazine would decrease considerably with high numbers of readers, their efficient use of the tablet (i.e., for many purposes over a long life of the device), and a smaller magazine file.

Place, publisher, year, edition, pages
John Wiley & Sons, 2015
Keyword
electronic media, tablet computer, magazine, information and communication technology (ICT), Internet, energy use, environmental impacts, life cycle assessment (LCA)
National Category
Other Environmental Engineering
Identifiers
urn:nbn:se:kth:diva-118833 (URN)10.1111/jiec.12227 (DOI)000362594200006 ()2-s2.0-84942295020 (Scopus ID)
Projects
CESC - Media and Sustainability
Funder
VINNOVA
Note

QC 20151103

Available from: 2013-02-28 Created: 2013-02-28 Last updated: 2017-12-06Bibliographically approved
Ahmadi Achachlouei, M. & Hilty, L. M. (2015). Modeling the Effects of ICT on Environmental Sustainability: Revisiting a System Dynamics Model Developed for the European Commission. In: Hilty, L.M.; Aebischer, B. (Ed.), ICT Innovations for Sustainability: (pp. 449-474). Switzerland: Springer Publishing Company
Open this publication in new window or tab >>Modeling the Effects of ICT on Environmental Sustainability: Revisiting a System Dynamics Model Developed for the European Commission
2015 (English)In: ICT Innovations for Sustainability / [ed] Hilty, L.M.; Aebischer, B., Switzerland: Springer Publishing Company, 2015, p. 449-474Chapter in book (Refereed)
Abstract [en]

This chapter revisits a System Dynamics model developed in 2002 with the aim of exploring the future impacts of Information and Communication Technology (ICT) on environmental sustainability in the EU, which then consisted of 15 countries. The time horizon of the study was 20 years (2000–2020). We analyze the results in light of empirical data that is now available for 2000–2012. None of the three scenarios that were developed by experts to specify the external factors needed to run the model were realistic from today’s point of view. If the model is re-run with more realistic input data for the first half of the simulation period, however, the main results regarding the impact of ICT remain qualitatively the same; they seem to be relatively robust implications of the causal system structure, as it is represented in the model. Overall, the impacts of ICT for mitigating greenhouse gas emissions and other environmental burdens for 2020 tend to be slightly stronger if the simulation is based on the empirical data now available.

Place, publisher, year, edition, pages
Switzerland: Springer Publishing Company, 2015
Series
Advances in Intelligent Systems and Computing, ISSN 2194-5357 ; 310
Keyword
Information and Communication Technology, Environmental Impact, Sustainable Development, Information Society, Socioeconomic Modeling and Simulation, System Dynamics, Prospective Technology Assessment
National Category
Other Environmental Engineering Information Systems, Social aspects
Identifiers
urn:nbn:se:kth:diva-148965 (URN)10.1007/978-3-319-09228-7_27 (DOI)2-s2.0-84927656940 (Scopus ID)978-3-319-09227-0 (Print) 978-3-319-09228-7 (Online) (ISBN)
Note

QC 20140825

Available from: 2014-08-15 Created: 2014-08-15 Last updated: 2015-08-13Bibliographically approved
Hischier, R., Ahmadi Achachlouei, M. & Hilty, L. M. (2014). Evaluating the sustainability of electronic media: Strategies for life cycle inventory data collection and their implications for LCA results. Environmental Modelling & Software, 56, 27-36
Open this publication in new window or tab >>Evaluating the sustainability of electronic media: Strategies for life cycle inventory data collection and their implications for LCA results
2014 (English)In: Environmental Modelling & Software, ISSN 1364-8152, E-ISSN 1873-6726, Vol. 56, p. 27-36Article in journal (Refereed) Published
Abstract [en]

This paper compares two Life Cycle Assessment (LCA) studies independently carried out to assess the environmental impacts of electronic versus print media. Although the two studies lead to the same overall conclusion for the case of a news magazine namely that the tablet version of the magazine has environmental advantages over the print version there are significant differences in the details of the LCA results. We show how these differences can be explained by differences in the methodological approaches used for life cycle inventory (LCI) modelling, in particular the use of rough average data versus the attempt to use the most specific and detailed data as possible. We conclude that there are several issues in LCA practice (at least when applied in the domain of media) that can significantly influence the results already at the LCI level: The data collection strategy used (e.g. relying on desk-based research or dismantling a given device) and the decisions made at inventory level with regard to parameters with significant geographic variability, such as the electricity mix or recycling quotas.

Keyword
Life cycle assessment, Life cycle inventory modelling, Environmental impact
National Category
Other Environmental Engineering
Identifiers
urn:nbn:se:kth:diva-140222 (URN)10.1016/j.envsoft.2014.01.001 (DOI)000337555500004 ()2-s2.0-84901496360 (Scopus ID)
Funder
Vinnova
Note

QC 20140814

Available from: 2014-01-19 Created: 2014-01-19 Last updated: 2017-12-06Bibliographically approved
Ahmadi Achachlouei, M. & Hilty, L. M. (2014). Modelling Rebound Effects in System Dynamics. In: Marx Gómez, J., Sonnenschein, M., Vogel, U., Winter, A., Rapp, B., Giesen, N. (Ed.), Proceedings of the 28th Conference on Environmental Informatics - EnviroInfo 2014 - ICT for Energy Efficiency: . Paper presented at EnviroInfo 2014: 28th International Conference on Informatics for Environmental Protection, September 10th – 12th 2014, Oldenburg, Germany. Germany: BIS Oldenburg
Open this publication in new window or tab >>Modelling Rebound Effects in System Dynamics
2014 (English)In: Proceedings of the 28th Conference on Environmental Informatics - EnviroInfo 2014 - ICT for Energy Efficiency / [ed] Marx Gómez, J., Sonnenschein, M., Vogel, U., Winter, A., Rapp, B., Giesen, N., Germany: BIS Oldenburg, 2014Conference paper, Published paper (Refereed)
Abstract [en]

The induction of demand by increasing the efficiency of a production or consumption process is known as the rebound effect. Feedback loops in System Dynamics can be used to conceptualize the structure of this complex phenomenon and also for communicating model-based insights. In passenger transport, the rebound effect can be induced through increased cost efficiency (direct economic rebound) and/or increase in speed (time rebound). In this paper we review and compare two models on environmental effects of passenger transport—including a model on the role of information and communication technology. We highlight the feedback mechanisms used to deal with the rebound effect (price, efficiency, and time rebound).

Place, publisher, year, edition, pages
Germany: BIS Oldenburg, 2014
Keyword
Rebound effect, modeling, System Dynamics, Causal Loop Diagram, Feedback Loop, Transport
National Category
Information Systems, Social aspects Other Environmental Engineering
Identifiers
urn:nbn:se:kth:diva-148968 (URN)978-3-8142-2317-9 (ISBN)
Conference
EnviroInfo 2014: 28th International Conference on Informatics for Environmental Protection, September 10th – 12th 2014, Oldenburg, Germany
Note

QC 20150202

Available from: 2014-08-15 Created: 2014-08-15 Last updated: 2015-02-02Bibliographically approved
Ahmadi Achachlouei, M. & Hilty, L. M. (2014). Simulating the future impact of ICT on environmental sustainability: validating and recalibrating a system dynamics model - Background Data. Stockholm: KTH Royal Institute of Technology
Open this publication in new window or tab >>Simulating the future impact of ICT on environmental sustainability: validating and recalibrating a system dynamics model - Background Data
2014 (English)Report (Other academic)
Abstract [en]

This report serves as supplementary material to the book chapter “Modeling the Effects of ICT on Environmental Sustainability: Revisiting a System Dynamics Model Developed for the European Commission” (Achachlouei and Hilty 2015) published in the book “ICT Innovations for Sustainability” (Hilty and Aebischer 2015). The current report was referred to in the book chapter whenever the data to be presented exceeded the space provided for the book chapter.

Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2014. p. 15
Series
TRITA-SUS, ISSN 1654-479X ; 2014:3
Keyword
Information and Communication Technology, Environmental Impact, Sustainable Development, Information Society, Socioeconomic Modeling and Simulation, System Dynamics, Prospective Technology Assessment
National Category
Other Environmental Engineering Information Systems, Social aspects
Identifiers
urn:nbn:se:kth:diva-157935 (URN)
Note

QC 20150122

Available from: 2015-01-20 Created: 2014-12-18 Last updated: 2015-01-22Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0002-7761-2350

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