| 1. |
- Erixon Aalto, Hanna, 1974-, et al.
(författare)
-
Of Plants, High Lines and Horses : Civics and Designers in the Relational Articulation of Values of Urban Natures
- 2017
-
Ingår i: Landscape and Urban Planning. - : Elsevier. - 0169-2046 .- 1872-6062. ; 157, s. 309-321
-
Tidskriftsartikel (refereegranskat)abstract
- This paper addresses three interventions into urban green spaces—a wetland in Cape Town, a post- industrial site in New York, and a park outside London. Through their different contexts, they help to grasp a wider phenomenon: the protection of urban nature through the development of protective narratives. We analyze these interventions as examples of “value articulation”, which we view as a relational and sociomaterial practice that requires the enrolment of people, plants, and things that together perform, spread, and deploy stories about why given places need protection. For each case study, we also highlight the moments when narrative practices move beyond mere protection and start to change the very context in which they were developed. We refer to these as projective narratives, emphasizing how novel values and uses are projected onto these spaces, opening them up for reworking. Our analyses of these successful attempts to protect land demonstrate how values emerge as part of inclusive, yet specific, narratives that mobilize and broaden support and constituencies. By constructing spatial linkages, such narratives embed places in wider geographical ‘wholes’ and we observe how the physical landscape itself becomes an active narrative element. In contrast to rationalist and external frameworks for analyzing values in relation to urban natures (e.g., ecosystem services), our ‘bottom-up’ mode situates urban nature in specific contexts, helping us to profoundly rethink planning and practice in order to (i) challenge expert categories and city/nature dichotomies; (ii) provide vernacular ways of knowing/understanding; and (iii) rethink the role of urban designers.
|
|
| 2. |
- Erixon Aalto, Hanna, 1975-
(författare)
-
Projecting Urban Natures : Investigating integrative approaches to urban development and nature conservation
- 2017
-
Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Projecting Urban Natures is a compilation thesis in critical studies in architecture. It comprises three journal articles and four design proposals in which I have taken an active part. The point of departure for this thesis is the renewed emphasis on social-ecological interaction and resilience that is currently taking place within ecological systems science, and the opportunities that these paradigmatic insights in turn have opened up within urbanism and design. The thesis argues that although they are promising, these emerging integrative frameworks are seldom brought into mainstream planning and urban design practice. Instead, the structuring of “nature” and “city” into a dualistic balance relationship still permeates not only the general planning discourse, but also makes its way into planning documents, notably influencing distinctions between professions. In response, this thesis sets out to rethink and explore more integrated approaches to human/nature relationships, through the utilization of design-based and transdisciplinary research methods. While this core aim of the thesis remains the same throughout the work, the task is approached from different perspectives: through different constellations of collaborative work as well as through parallel case-based explorations that emphasize the relational, anti-essentialist and situated articulation of values of urban natures and how these forces come into play. The work has been propelled through workshop-based, site-specific, and experimental design processes with professionals and researchers from the fields of e.g. systems ecology, natural resource management, political ecology, urban design, architecture, and landscape design, as well as planners, developers, local interest groups, and NGOs. Specifically, projects performed within this thesis include: Nature as an Infrastructural Potential – An Urban Strategy for Järvafältet; Kymlinge UrbanNatur together with NOD, Wingårdhs, MUST and Storylab; Årsta Urban Natures with James Corner Field Operations and Buro Happold; and Albano Resilient Campus — a collaboration between Stockholm Resilience Centre, KTH and KIT.
|
|
| 3. |
- Erixon Aalto, Hanna, et al.
(författare)
-
Towards a social-ecological urbanism: Co-producing knowledge through design in the Albano Resilient Campus project in Stockholm
- 2018
-
Ingår i: Sustainability. - : MDPI AG. - 2071-1050. ; 10:3
-
Tidskriftsartikel (refereegranskat)abstract
- If we are to promote urban sustainability and resilience, social-ecological knowledge must be better integrated in urban planning and design projects. Due to gaps in the two cultures of thinking that are associated with the disciplines of ecology and design, such integration has, however, proven to be challenging. In mainstream practice, ecologists often act as sub-consultants; they are seldom engaged in the creative and conceptual phases of the process. Conversely, research aiming to bridge the gap between design and ecology has tended to be dominated by a relatively static and linear outlook on what the design process is, and what it could be. Further, few concrete examples of the co-production of ecological and design knowledge exist. In this paper, we give an account of a transdisciplinary design proposal for Albano Resilient Campus in Stockholm, discussing how design-seen as a process and an assemblage of artifacts-can act as a framework for co-producing knowledge and operationalizing concepts of resilience and ecosystem services. Through a design-based and action-oriented approach, we discuss how such a collaborative design process may integrate ecological knowledge into urban design through three concrete practices: (a) iterative prototyping; (b) generative matrix models; and, (c) legible, open-ended, comprehensive narratives. In the conclusion, we sketch the contours of a social-ecological urbanism, speculating on possible broader and changed roles for ecologists, designers, and the associated actors within this framework.
|
|
| 4. |
- Karlsson, Lars, et al.
(författare)
-
Post-cardioversion Improvement in LV Function Defined by 4D Flow Patterns and Energetics in Patients With Atrial Fibrillation
- 2019
-
Ingår i: Frontiers in Physiology. - : FRONTIERS MEDIA SA. - 1664-042X. ; 10
-
Tidskriftsartikel (refereegranskat)abstract
- Background: Atrial fibrillation (AF) is a prevalent cause of cardiovascular morbidity, including thromboembolism and heart failure. Left ventricular dysfunction (LVD) detected in AF patients may be either precursor or consequence of the arrythmia. Successful cardioversion of chronic AF is often followed by a transient period of left atrial (LA) stunning, where depressed mechanical atrial contraction persists despite reinstitution of sinus rhythm. To determine if AF-associated LVD would improve with resolution of LA dysfunction, AF patients were examined immediately and 4 weeks after cardioversion to sinus rhythm. 4D flow cardiovascular magnetic resonance (CMR) assesses ventricular function according to the volumes and energetics of functional components of the LV volume. Previously, described 4D CMR markers of LVD include decreased volume and end-diastolic kinetic energy (KE) of the Direct flow, which is the portion of LV volume that passes directly from inflow to outflow in a single cycle. We hypothesize that impaired LV flow patterns and energetics will be found immediately after cardioversion during atrial stunning, and that those parameters will improve as atrial function returns. Methods: Ten patients with a history of AF underwent CMR 2-3 h (Time-1) and 4 weeks (time-2), following electrical cardioversion to sinus rhythm. 4D phase-contrast velocity data and morphological images were acquired at a 3T CMR system. Using a previously evaluated method, pathlines were emitted from the LV end diastolic volume (LVEDV) and traced forward and backward in time until end-systole. The LVEDV was automatically separated into four functional flow components whose volume and KE were calculated. Results: Left atrial fractional area change increased over the follow-up period (P = 0.001), indicating recovery of LA mechanical function. LVEF increased between Time-1 and Time-2 (P = 0.003); LVEDVI did not change (P = 0.319). Over that interval, the ratios of Direct flow/LVEDV volume and KE increased (P = 0.001 and P = 0.003, respectively), while the ratios of Residual volume/LVEDV volume and KE decreased (P = 0.001 and P = 0.005, respectively). Conclusion: Post-cardioversion recovery of LA function was associated with improvements in conventional and 4D CMR markers of LV function. Flow-specific measures demonstrate the negative but potentially reversible impact of LA dysfunction on volume and energetic aspects of LV function.
|
|
| 5. |
|
|
