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Bits and q-bits as versatility measures Anais da ABC (AABC)
Piqueira,José R.C..
Using Shannon information theory is a common strategy to measure any kind of variability in a signal or phenomenon. Some methods were developed to adapt information entropy measures to bird song data trying to emphasize its versatility aspect. This classical approach, using the concept of bit, produces interesting results. Now, the original idea developed in this paper is to use the quantum information theory and the quantum bit (q-bit) concept in order to provide a more complete vision of the experimental results.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bit; Complexity; Entropy; Q-bit; Measure; Versatility.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652004000200035
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Contributions of the complexity paradigm to the understanding of Cerrado's organization and dynamics Anais da ABC (AABC)
MATTOS,SÉRGIO H.V.L. DE; VICENTE,LUIZ E.; PEREZ FILHO,ARCHIMEDES; PIQUEIRA,JOSÉ R.C..
ABSTRACT The Brazilian Cerrado is a vegetation mosaic composed of different physiognomies. Discussions remain open regarding the factors and processes responsible for the dynamic and spatial organization of the Cerrado - in its different physiognomies. The contributions of the complexity paradigm in this context are still less exploited, despite its great potential for explanations and predictions presented in previous diverse dynamic systems of complex behavior researches, a category in which the Cerrado can be included. This article has the intention of contributing to the construction of this new perspective, discussing - from theoretical concepts - the paradigm of complexity for the understanding of the organization and the dynamics of the Cerrado.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cerrado; Complexity; Complex system; Dynamics; Self-organized criticality.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000602417
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Approximate Entropy as a measure of complexity in sap flow temporal dynamics of two tropical tree species under water deficit Anais da ABC (AABC)
Souza,Gustavo M.; Ribeiro,Rafael V.; Santos,Mauro G.; Ribeiro,Henrique L.; Oliveira,Ricardo F..
Approximate Entropy (ApEn), a model-independent statistics to quantify serial irregularities, was used to evaluate changes in sap flow temporal dynamics of two tropical species of trees subjected to water deficit. Water deficit induced a decrease in sap flow of G. ulmifolia, whereas C. legalis held stable their sap flow levels. Slight increases in time series complexity were observed in both species under drought condition. This study showed that ApEn could be used as a helpful tool to assess slight changes in temporal dynamics of physiological data, and to uncover some patterns of plant physiological responses to environmental stimuli.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Approximate Entropy; Complexity; Sap flow; Time series analysis; Tropical ecophysiology; Water deficit.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652004000300015
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Temporal dynamics of stomatal conductance of plants under water deficit: can homeostasis be improved by more complex dynamics? BABT
Souza,Gustavo Maia; Oliveira,Ricardo Ferraz de; Cardoso,Victor José Mendes.
In this study we hypothesized that chaotic or complex behavior of stomatal conductance could improve plant homeostasis after water deficit. Stomatal conductance of sunflower and sugar beet leaves was measured in plants grown either daily irrigation or under water deficit using an infrared gas analyzer. All measurements were performed under controlled environmental conditions. In order to measure a consistent time series, data were scored with time intervals of 20s during 6h. Lyapunov exponents, fractal dimensions, KS entropy and relative LZ complexity were calculated. Stomatal conductance in both irrigated and non-irrigated plants was chaotic-like. Plants under water deficit showed a trend to a more complex behaviour, mainly in sunflower that showed better...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Beta vulgaris; Complexity; Helianthus annus; Stability; Time series analyses; Water deficit.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000300013
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Study of the comprehension of the scientific method by members of a university health research laboratory BJMBR
Burlamaque-Neto,A.C.; Santos,G.R.; Lisbôa,L.M.; Goldim,J.R.; Machado,C.L.B.; Matte,U.; Giugliani,R..
In Brazil, scientific research is carried out mainly at universities, where professors coordinate research projects with the active participation of undergraduate and graduate students. However, there is no formal program for the teaching/learning of the scientific method. The objective of the present study was to evaluate the comprehension of the scientific method by students of health sciences who participate in scientific projects in an academic research laboratory. An observational descriptive cross-sectional study was conducted using Edgar Morin complexity as theoretical reference. In a semi-structured interview, students were asked to solve an abstract logical puzzle - TanGram. The collected data were analyzed using the hermeneutic-dialectic analysis...
Tipo: Info:eu-repo/semantics/other Palavras-chave: Scientific method; Complexity; Academic scientific research.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2012000200001
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The complexity-stability hypothesis in plant gas exchange under water deficit Braz. J. Plant Physiol.
Souza,Gustavo M.; Pincus,Steven M; Monteiro,José Alberto F..
We hypothesized that more complex, i.e. irregular, temporal dynamics and a more interconnected overall network supports greater stability to gas exchange parameters (herein, CO2 net assimilation and transpiration) in plants under water deficit. To test this hypothesis two genotypes of Phaseolus vulgaris were subjected to a period of absence of irrigation, and subsequent rewatering to achieve recovery. Gas exchanges parameters were measured each 10 s during 6 h to obtain time series to evaluate complexity by Approximate Entropy (ApEn) calculations, and network connectance in each water regime. Notably, the Jalo Precoce genotype showed significantly more stability than the Guarumbé genotype under system perturbation, coincident with greater irregularity in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Approximate Entropy; Complexity; Network connectance; Plant stress theory; Photosynthesis; Temporal dynamics; Water deficit.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202005000400004
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Emergence Unites Ecology and Society Ecology and Society
Trosper, Ronald L; University of British Columbia; Ronald.Trosper@ubc.ca.
The effort to combine analysis of ecosystems and social systems requires a firm theoretical basis. When humans are present in an ecosystem, their actions affect emergent structures; this paper examines forms of emergence that account for the presence of humans. Humans monitor and regulate ecosystems based on their cultural systems. Cultural systems consist of concepts linked in complicated ways that can form consistent world views, can contain inconsistencies, and may or may not accurately model the properties of a social–ecological system. Consequently, human monitoring and regulating processes will differ, depending on cultural systems. Humans, as agents, change or maintain pre-existing material and cultural emergent structures. The...
Tipo: Peer-Reviewed Reports Palavras-chave: Analytical dualism; Complexity; Critical realism; Ecological economics; Emergence; Social– Ecological systems; Sustainability.
Ano: 2005
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Can Resilience be Reconciled with Globalization and the Increasingly Complex Conditions of Resource Degradation in Asian Coastal Regions? Ecology and Society
Armitage, Derek; Wilfrid Laurier University; darmitag@wlu.ca; Johnson, Derek; Centre for Maritime Research; dsjohnson@marecentre.nl.
This paper explores the relationship between resilience and globalization. We are concerned, most importantly, with whether resilience is a suitable conceptual framework for natural resource management in the context of the rapid changes and disruptions that globalization causes in social-ecological systems. Although theoretical in scope, we ground this analysis using our experiences in two Asian coastal areas: Junagadh District in Gujarat State, India and Banawa Selatan, in Central Sulawesi, Indonesia. We present the histories of resource exploitation in the two areas, and we attempt to combine a resilience perspective with close attention to the impact of globalization. Our efforts serve as a basis from which to examine the conceptual and practical...
Tipo: Peer-Reviewed Synthesis Palavras-chave: Globalization; Resilience; Complexity; India; Indonesia; Resource management; Coastal management; Social-ecological system; Sustainability.
Ano: 2006
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How game changers catalyzed, disrupted, and incentivized social innovation: three historical cases of nature conservation, assimilation, and women’s rights Ecology and Society
Westley, Frances R.; Waterloo Institute for Social Innovation and Resilience, University of Waterloo; School for Environment, Enterprise and Development, University of Waterloo; fwestley@uwaterloo.ca; McGowan, Katharine A.; Bissett School of Business, Mount Royal College, Calgary, Alberta; kmcgowan@mtroyal.ca; Antadze, Nino; Department of Environmental Studies, Bucknell University; na011@bucknell.edu; Blacklock, Jaclyn; University of Waterloo; jblacklo@uwaterloo.ca; Tjornbo, Ola; Waterloo Institute for Social Innovation and Resilience, University of Waterloo; ola.tjornbo@gmail.com.
We explore the impact of “game changers” on the dynamics of innovation over time in three problem domains, that of wilderness protection, women’s rights, and assimilation of indigenous children in Canada. Taking a specifically historical and cross-scale approach, we look at one social innovation in each problem domain. We explore the origins and history of the development of the National Parks in the USA, the legalization of contraception in the USA and Canada, and the residential school system in Canada. Based on a comparison of these cases, we identify three kinds of game changers, those that catalyze social innovation, which we define as “seminal,” those that disrupt the continuity of social...
Tipo: Peer-Reviewed Insight Palavras-chave: Complexity; Game changers; Innovation; North America; Social innovation; Transformative change.
Ano: 2016
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A sense of change: media designers and artists communicating about complexity in social-ecological systems Ecology and Society
Vervoort, Joost M.; Environmental Change Institute, University of Oxford; Soil Geography and Landscape group, Wageningen University; Alterra; joost.vervoort@eci.ox.ac.uk; Keuskamp, Diederik H.; Institute for Interdisciplinary Studies, University of Amsterdam; d.h.keuskamp@uva.nl; Kok, Kasper; Soil Geography and Landscape group, Wageningen University; Kasper.Kok@wur.nl; van Lammeren, Ron; Laboratory for Geo-information Science and Remote Sensing, Wageningen University; ron.vanlammeren@wur.nl; Stolk, Taconis; ArtScience Interfaculty, Royal Arts Academy; tawstolk@wlfr.nl; Veldkamp, Tom (A.); Faculty of Geo-Information Science and Earth Observation, University of Twente; veldkamp@itc.nl; Rekveld, Joost; ArtScience Interfaculty, Royal Academy of Art; joost.rekveld@interfaculty.nl; Schelfhout, Ronald; ArtScience Interfaculty, Royal Academy of Arts; ronaldschelfhout@gmail.com; Teklenburg, Bart; ArtScience Interfaculty, Royal Academy of Arts; bartje2012@hotmail.com; Cavalheiro Borges, Andre; ArtScience Interfaculty, Royal Academy of Arts; cavalheiroacb@gmail.com; Wits, Willem; ArtScience Interfaculty, Royal Academy of Arts; willem_wits@hotmail.com; Assmann, Nicky; ArtScience Interfaculty, Royal Academy of Arts; info@nickyassmann.net; Abdi Dezfouli, Erfan; ArtScience Interfaculty, Royal Academy of Arts; info@erfanabdi.com; Cunningham, Kate; ArtScience Interfaculty, Royal Academy of Arts; kecunning@gmail.com; Nordeman, Berend; Media Technology, Leiden University; berend@nordeman.nl; Rowlands, Hannah; Oxford Martin School Programme for the Future of Food, University of Oxford; hannah.rowlands@zoo.ox.ac.uk.
To take on the current and future challenges of global environmental change, fostering a widespread societal understanding of and engagement with the complex dynamics that characterize interacting human and natural systems is essential. Current science communication methods struggle with a number of specific challenges associated with communicating about complex systems. In this study we report on two collaborative processes, a short workshop and longer course, that aimed to harness the insights of interactive media designers and artists to overcome these challenges. The two processes resulted in 86 new interactive media concepts which were selected by the participants and organizers using set criteria and then evaluated using the same criteria by a panel...
Tipo: Peer-Reviewed Reports Palavras-chave: Communication; Complexity; Participation; Scale; Serious gaming; Social-ecological systems.
Ano: 2014
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Change and Identity in Complex Systems Ecology and Society
Cumming, Graeme S; University of Florida; cummingg@wec.ufl.edu; Collier, John; University of KwaZulu-Natal; collierj@ukzn.ac.za.
Tipo: Peer-Reviewed Reports Palavras-chave: Complexity; Resilience; Identity; Adaptive cycle; Limitation; Replacement; Random walk; Evolution; Ecosystem; Economy; Society; Social-ecological system; Metamodels.
Ano: 2005
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Anticipating future risk in social-ecological systems using fuzzy cognitive mapping: the case of wildfire in the Chiquitania, Bolivia Ecology and Society
Devisscher, Tahia; Environmental Change Institute‬, School of Geography and the Environment, University of Oxford; Stockholm Environment Institute; tahia.devisscher@ouce.ox.ac.uk; Boyd, Emily; Department of Geography and Environmental Sciences, University of Reading; Lund University Centre for Sustainability Studies; emily.boyd@reading.ac.uk; Malhi, Yadvinder; Environmental Change Institute‬, School of Geography and the Environment, University of Oxford; yadvinder.malhi@ouce.ox.ac.uk.
Understanding complex social-ecological systems, and anticipating how they may respond to rapid change, requires an approach that incorporates environmental, social, economic, and policy factors, usually in a context of fragmented data availability. We employed fuzzy cognitive mapping (FCM) to integrate these factors in the assessment of future wildfire risk in the Chiquitania region, Bolivia. In this region, dealing with wildfires is becoming increasingly challenging because of reinforcing feedbacks between multiple drivers. We conducted semistructured interviews and constructed different FCMs in focus groups to understand the regional dynamics of wildfire from diverse perspectives. We used FCM modelling to evaluate possible adaptation scenarios in the...
Tipo: Peer-Reviewed Reports Palavras-chave: Adaptation; Climate change; Complexity; Scenario; Social-ecological system; Uncertainty; Wildfire risk.
Ano: 2016
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The research journey: travels across the idiomatic and axiomatic toward a better understanding of complexity Ecology and Society
McGowan, Katharine A.; University of Waterloo, Canada; k2mcgowa@uwaterloo.ca; Westley, Frances; University of Waterloo, Canada; fwestley@uwaterloo.ca; Fraser, Evan D. G.; University of Guelph, Canada; frasere@uoguelph.ca; Loring, Philip A.; University of Saskatchewan, Canada; ploring@alaska.edu; Weathers, Kathleen C.; Cary Institute of Ecosystems Studies, United States; weathersk@ecostudies.org; Avelino, Flor; Dutch Research Institute for Transitions, Netherlands; avelino@fsw.eur.nl; Sendzimir, Jan; International Institute of Applied Systems Analysis, Austria; sendzim@iiasa.ac.at; Roy Chowdhury, Rinku; Indiana University (Bloomington), United States; rroychow@indiana.edu; Moore, Michele-Lee; University of Victoria, Canada; mlmoore@uvic.ca.
Tipo: Peer-Reviewed Synthesis Palavras-chave: Complexity; Interdisciplinarity; Social-ecological systems; Transdisciplinarity.
Ano: 2014
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Visions, beliefs, and transformation: exploring cross-sector and transboundary dynamics in the wider Mekong region Ecology and Society
Smajgl, Alex; MERFI Mekong Region Futures Institute; CSIRO Land and Water Flagship; alex.smajgl@mekongfutures.com; Ward, John R.; MERFI Mekong Region Futures Institute; CSIRO Land and Water Flagship; john.ward@mekongfutures.com; Foran, Tira; CSIRO Land and Water Flagship; tira.foran@csiro.au; Dore, John; DFAT Australian Aid, Australian Embassy, Bangkok, Thailand; John.Dore@ausaid.gov.au; Larson, Silva; CSIRO Land and Water Flagship; College of Business, Law and Governance, Division of Tropical Environments and Societies, James Cook University; silva.larson@jcu.edu.au.
Policy and investment decisions in highly connected, developing regions can have implications that extend beyond their initial objectives of national development and poverty reduction. Local level decisions that aim to promote trajectories toward desirable futures are often transformative, unexpectedly altering factors that are determined at higher regional levels. The converse also applies. The ability to realize desirable local futures diminishes if decision-making processes are not coordinated with other influential governance and decision levels. Providing effective support across multiple levels of decision making in a connected, transformative environment requires (a) identification and articulation of desired outcomes at the relevant levels of...
Tipo: Peer-Reviewed Reports Palavras-chave: Complexity; Development; Mekong; Participatory research.
Ano: 2015
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On Nature, Models, and Simplicity Ecology and Society
Baumann, Michael; University of British Columbia and ananature.com Scientific Services; baumann@interchange.ubc.ca.
Tipo: Peer-Reviewed Reports Palavras-chave: Complexity; Epistemology; Modeling; Simplicity.
Ano: 2000
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Ecohealth and resilience thinking: a dialog from experiences in research and practice Ecology and Society
Resilience thinking and ecosystems approaches to health (EAH), or ecohealth, share roots in complexity science, although they have distinct foundations in ecology and population health, respectively. The current articulations of these two approaches are strongly converging, but each approach has its strengths. Resilience thinking has developed theoretical models to the study of social–ecological systems, whereas ecohealth has a vast repertoire of experience in dealing with complex health issues. With the two fields dovetailing, there is ripe opportunity to create a dialog centered on concepts that are more thoroughly developed in one field, which can then serve to advance the other. In this article, we first present an overview of the ecohealth...
Tipo: Peer-Reviewed Synthesis Palavras-chave: Complexity; Ecohealth; Ecosystem approaches to health; Health; Resilience thinking; Social– Ecological systems.
Ano: 2014
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Cross-Scale Value Trade-Offs in Managing Social-Ecological Systems: The Politics of Scale in Ruaha National Park, Tanzania Ecology and Society
Zia, Asim; Department of Community Development and Applied Economics, University of Vermont; Asim.Zia@uvm.edu; Hirsch, Paul; Department of Environmental Studies SUNY College of Environmental Science and Forestry, Syracuse NY ; pahirsch@maxwell.syr.edu; Songorwa, Alexander; Department of Wildlife Management, Sokoine University of Agriculture, Morogoro, Tanzania ; bhugoji@yahoo.com; Mutekanga, David R.; Wildlife Conservation Society, Ruaha National Park, Tanzania; DMutekanga@wcs.org; O'Connor, Sheila; Global Institute of Sustainability, Arizona State University, Tempe AZ ; soconnor@wwf.org.uk; McShane, Thomas; Global Institute of Sustainability, Arizona State University, Tempe AZ ; mcshane@bluewin.ch; Brosius, Peter; Center for Integrative Conservation Research, University of Georgia, Athens GA ; pbrosius@uga.edu; Norton, Bryan; School of Public Policy, Georgia Institute of Technology, Atlanta GA; bryan.norton@pubpolicy.gatech.edu.
Management of social-ecological systems takes place amidst complex governance processes and cross-scale institutional arrangements that are mediated through politics of scale. Each management scenario generates distinct cross-scale trade-offs in the distribution of pluralistic values. This study explores the hypothesis that conservation-oriented management scenarios generate higher value for international and national scale social organizations, whereas mixed or more balanced management scenarios generate higher value for local scale social organizations. This hypothesis is explored in the management context of Ruaha National Park (RNP), Tanzania, especially the 2006 expansion of RNP that led to the eviction of many pastoralists and farmers. Five...
Tipo: Peer-Reviewed Reports Palavras-chave: Biodiversity conservation; Complexity; Ecological valuation; Economic development; Politics of scale; Social-ecological systems; Trade-off analysis.
Ano: 2011
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Foghorns to the Future: Using Knowledge and Transdisciplinarity to Navigate Complex Systems Ecology and Society
Cundill, Georgina N. R.; Rhodes University; gcundill@rides.cl; Fabricius, Christo; Rhodes University; c.fabricius@ru.ac.za; Marti, Neus; Autonomous University; neus@amauta.rcp.net.pe.
Complex systems are shaped by cross-scale interactions, nonlinear feedbacks, and uncertainty, among other factors. Transdisciplinary approaches that combine participatory and conventional methods and democratize knowledge to enable diverse inputs, including those from local, informal experts, are essential tools in understanding such systems. The metaphor of a “bridge” to overcome the divide between different disciplines and knowledge systems is often used to advocate for more inclusive approaches. However, there is a shortage of information and consensus on the process, methodologies, and techniques that are appropriate to achieve this. This paper compares two case studies from Peru and South Africa in which community-level assessments...
Tipo: Peer-Reviewed Synthesis Palavras-chave: Ecological assessment; Community-based assessment; Complexity; Scale; Epistemology; Methodology; Millennium Ecosystem Assessment; Complex systems; Uncertainty; Peru; South Africa; Case studies; Transdisciplinary research.
Ano: 2005
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Surmountable Chasms: Networks and Social Innovation for Resilient Systems Ecology and Society
Moore, Michele-Lee; J. W. McConnell Graduate Fellow, Social Innovation Generation, University of Waterloo; mlmoore@balsillieschool.ca; Westley, Frances ; McConnell Chair, Social Innovation Generation, University of Waterloo; fwestley@uwaterloo.ca.
Complex challenges demand complex solutions. By their very nature, these problems are difficult to define and are often the result of rigid social structures that effectively act as “traps”. However, resilience theory and the adaptive cycle can serve as a useful framework for understanding how humans may move beyond these traps and towards the social innovation that is required to address many complex problems. This paper explores the critical question of whether networks help facilitate innovations to bridge the seemingly insurmountable chasms of complex problems to create change across scales, thereby increasing resilience. The argument is made that research has not yet adequately articulated the strategic agency that must be present...
Tipo: Peer-Reviewed Reports Palavras-chave: Agency; Complexity; Cross scale; Network theory; Resilience; Scale; Skill sets; Social entrepreneurship; Social innovation; Social networks.
Ano: 2011
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Sensemaking: a complexity perspective Ecology and Society
Lynam, Timothy; Commonwealth Scientific and Industrial Research Organisation (CSIRO); Reflecting Society; James Cook University; tim.lynam@internode.on.net; Fletcher, Chris; Emerging Options; chris@emergingoptions.com.au.
Our intent was to provide a methodological overview of the primary data collection process in support of the other articles in this special issue. We documented and illustrated the use of a data collection and analysis suite, SenseMaker, that was designed to collect and work with narrative fragments. The approach presented adds a new and inherently mixed tool to the mixed methods toolbox. Despite its novelty and potential utility, little has been written in the academic literature on the application of SenseMaker to complex problems. To the best of our knowledge, the approach has not been used in relation to climate change or climate change adaptation and has not been presented in the mixed methods literature. We sought to contribute to filling this gap...
Tipo: Peer-Reviewed Reports Palavras-chave: Adaptation; Climate change; Complexity; Micronarratives; Mixed methods approach; Narratives; Sensemaking; Stages of change (SOC); Transtheoretical model.
Ano: 2015
Registros recuperados: 48
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