[article-cris] Insinööritieteiden korkeakoulu / ENG

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  • Sufficiency planning : A model of planning in an era of polycrisis
    (2026-02) Xue, Jin; Eräranta, Susa
    A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
    The urgency of the current polycrisis calls for a renewal of planning theory. We propose sufficiency planning as an approach, within earth system boundaries as its fundamental premiss to embrace the ecological, interpersonal, social, and individual realms of planning. The reframing of planning through sufficiency normativity builds on an ontological exploration informed by critical realism’s concept of four-planar social being. This approach explicates a philosophical interpretation of planning as a social act that interrelates with nature, social interactions, social structures and inter-subjectivity. In this paper, we lay out the main principles of sufficiency planning, its relevance to existing planning theories, and implications for planning practices.
  • Cyclic behavior of a replaceable LYP steel link with corrugated web : Parametrical analyses and design recommendations
    (2025-04) Feng, Sidong; He, Jun; Lin, Weiwei; Vasdravellis, George; Zhu, Yongsheng
    A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
    In order to establish a rapid recoverable structural system in earthquake prone area, a novel replaceable low yield point steel link with corrugated web (LCSW link), consisting of the low yield point steel corrugated web with the top flange, the bottom flange, and the endplates, was proposed and tested in previous research. In this paper, a series of finite element (FE) models was established and validated to further study and understand the influence of different design parameters on the cyclic behaviors in terms of the hysteretic curves, initial stiffness, over-strength factor and cumulative energy dissipation. The analytical results indicate that the hysteretic behaviors of the specimens were obviously affected by the span-to-height ratio, the ductility and energy dissipation capacity were significantly improved by using low yield point steel (LYP steel). Furthermore, some recommendations have been introduced for the design of LCSW links in economic and safety side: the smallest ratios for flange slenderness and CSW height-to-thickness were recommended as 8.33 and 95 respectively; Flange-to-web thickness ratio was recommended to be greater than 2.0. In addition, the corrugation angle of CSW was recommended to be more than 45°, and the horizontal panel-to-wavelength ratio can be initially taken as 0.34. Finally, simple design equations for the skeleton curves were proposed and validated for LCSW links with recommended geometric dimensions.
  • Alustavia konsepteja alue-energiajärjestelmistä simulaatioiden ja yhteiskehittämisen perusteella - tarkastelukohteina uudisrakentamisen asuialue ja olemassa oleva asuinalue: Loppuraportti
    (2025-05) Lutfi, Evilina; Jokisalo, Juha; Rapanen, Kaisa; Tohka, Antti; Rossi, Sergio; Numminen, Jaana
    Commissioned report
  • Asukaslähtöisen visiosuunnitelman yhteiskehittäminen ja merkitys maankäytön suunnittelussa : Tapaus Westside
    (2025-10-27) Merikoski, Tiina; Nummi, Pilvi
    A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
    Artikkelissa tarkastelemme Lounais-Kirkkonummen asukasyhdistys ry:n oma-aloitteista Westside-projektia, jossa yhdistyksen toiminta-alueelle laadittiin kattava aluekehittämisen visio. Tutkimme, minkälaista suunnitteluaktivismia projekti edustaa ja miten asukkaiden omaehtoisesti tuottama visio suhtautuu hallintojohtoiseen suunnittelukulttuuriimme. Projekti osoittaa, että asukaslähtöisesti voidaan tuottaa myös yleispiirteistä ja pitkän aikavälin suunnittelua tukevaa tietoa visiosuunnitelman muodossa. Kaavoitusta ohjaava lainsäädäntö ei kuitenkaan tunnista omaehtoista suunnittelua, joka vaatii tuekseen laajempaa muutosta suunnittelukulttuuriin.
  • “What You Need is Data!” : Physics-Guided TimeGAN for Data Expansion in Bridge SHM
    (2025) Lan, Yifu; Li, Zhenkun; Lin, Weiwei
    A4 Artikkeli konferenssijulkaisussa
    Traditional Structural Health Monitoring (SHM) technologies have not yet been widely adopted by infrastructure asset managers. However, with the recent advancements in information technology and artificial intelligence (AI), modern SHM has brought greater practical potential. AI-based SHM often relies on big data, but in practice, data availability is a problem, especially for some difficult-to-obtain cases. Theoretically, Generative Adversarial Networks (GANs) can augment data and significantly expand databases. On the other hand, some argue that GAN models can be challenging to train and that the amount of data required to train a GAN might be sufficient to train a diagnostic model. More importantly, the data generated by GANs may not truly capture the underlying physical characteristics. To address these, this paper proposes to use physical laws to guide GANs, with TimeGAN adopted as the base model due to its strong performance with time-series data. In this study, the proposed physics-guided TimeGAN (PyTiGAN) is used for data expansion in bridge SHM under the excitation of traffic events. The results demonstrate the effectiveness of the proposed method in expanding bridge SHM datasets from multiple dimensions.
  • Improving fouling resistance of polyvinylidene fluoride membrane with mono-hydroxyl poly(dimethylsiloxane) (PDMS-OH) grafted silica nanoparticles
    (2026-03) Al-Shaeli, Muayad; Al-Juboori, Raed A.; Wang, Huanting; Ladewig, Bradley P.; Alsalhy, Qusay F.; Zhang, Jianhua
    A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
    In this study, mono‑hydroxyl polydimethylsiloxane (CH3-PDMS-OH) was successfully grafted onto silica (SiO2) nanoparticles via Steglich esterification process to produce surface-functionalized PDMS-g-SiO₂ nanomaterials. These nanoparticles were then introduced into polyvinylidene fluoride (PVDF) matrices through non-induced phase inversion (NIPS) to fabricate mixed matrix ultrafiltration membranes with different nanoparticle loadings (0, 1.6, 3.2, 6.3, and 11.8 wt %). The PDMS-g-SiO₂ incorporation resulted in membranes with slightly reduced porosity and hydrophobicity compared to pristine PVDF yet exhibited markedly improved antifouling performance. Although pure water flux decreased slightly due to the addition of nanoparticles, the rejection rate of Bovine serum albumin (BSA) improved substantially because of optimized pore structure and surface chemistry. In contrast, membranes containing unmodified SiO₂ showed higher initial flux but suffered from severe irreversible fouling. The modified PVDF membranes showed a flux recovery ratio of up to 97 % and significantly reduced protein adsorption (19.9 µg/cm²) relative to pristine PVDF (62 µg/cm²), confirming the formation of a low-energy, fouling-resistant surface. High flux recovery was sustained over four fouling/cleaning cycles with both BSA and humic acid (HA), and its durability was further demonstrated through 15 days of long-term testing. This study establishes a new hybrid design approach that combines the hydrophobic flexibility of PDMS with the hydrophilic stability of SiO₂, offering a durable and effective route for developing antifouling PVDF membranes for wastewater treatment applications.
  • Effects of ground vegetation on terrestrial laser scanning-derived digital terrain models in boreal forests
    (2026) Tienaho, Noora; Yrttimaa, Tuomas; Vaaja, Matti; Saarinen, Ninni; Vastaranta, Mikko
    A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
    Digital terrain models (DTMs) represent bare ground topography and are essential for studying forest characteristics. Terrestrial laser scanning (TLS) is widely used for forest characterization and DTM derivation, but ground vegetation affects the reliability of DTM. This study quantified vertical errors in TLS-derived DTMs caused by ground vegetation in boreal Scots pine (Pinus sylvestris) forests and assessed their impact on diameter at breast height (DBH), stem volume, and stand volume. Bitemporal TLS campaigns were conducted at four one-hectare test sites in Finland, where controlled burnings removed ground vegetation between the measurements. This created 12,452 burned cells (1 × 1 m), while 7619 intact cells served as controls. Comparing pre- and post-fire DTMs revealed that post-fire DTMs were, on average, 8–13 cm lower. Burned cells exhibited greater absolute change (|ΔDTM|) and related root mean square difference (RMSD). Taller vegetation led to higher ΔDTM values. A 10 cm DTM overestimation caused systematic errors in tree and forest attributes: DBH was underestimated by 1.3 mm (0.6%), stem volume by 4.8 dm³ (3.1%), and total stem volume by ∼3 m³/ha (1.3%). This study quantifies ground elevation overestimation and tree attribute underestimation when DTMs include ground vegetation in boreal forests.
  • Investigating log removals of bacteria and viruses at a full-scale enhanced coagulation contact filtration drinking water treatment plant
    (2025-09) Pellikainen, Paula; Eikebrokk, Bjørnar; Myrmel, Mette; Lavonen, Elin
    A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
    The effectiveness of pathogen removal from drinking water by conventional treatment has been evaluated in numerous studies. However, the reported log removals show a significant variation, depending on the source water quality, type of microorganism being studied, scale of experiments (laboratory, pilot, or full-scale), treatment operation conditions, and differences in treatment technology and process design. Additionally, data on the removal of bacteria and viruses using full-scale enhanced coagulation-contact filtration processes are very limited, and there is no available information on log removal rates under stressed conditions. In this study, the removal of spiked Enterococcus faecium (E. faecium) (ATCC® 8459™) and MS2 was investigated at a full-scale enhanced coagulation-contact filtration water treatment plant during optimal and stressed operational conditions. The log removals achieved under optimal coagulation conditions were ≥4.6 for E. faecium, ≥2.1 for infectious MS2 (PFU), and, on average, >2.3 for total MS2 (RT-qPCR), with variation ranging from 1 to >3.5 logs. The removal of naturally occurring coliforms was >3.4 logs. During suboptimal coagulation conditions, the concentration of E. faecium and total MS2 increased in the filter effluent. The removal for E. faecium was ≥4.1 logs, and the average total MS2 decreased by >1.8. Operational stress, such as increased filtration rates, reduced virus removal by over 2 logs. Compared to conventional treatment, the results suggest that enhanced coagulation-contact filtration is less sensitive to short-term stress and suboptimal operational conditions. The results of this study highlight the importance of optimizing operational conditions to ensure effective treatment barriers and safe drinking water.
  • Breaking barriers : a field experiment to explore discrimination in housing for people with moving disabilities
    (2026-01) Mourelatos, Evangelos; Oikarinen, Elias
    A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
    This study investigates discrimination against tenants with moving disabilities in the rental housing market using a correspondence test and fake application letters. A field experiment with two scenarios was conducted in the Finnish market, and five fictitious household tenants were compared. The findings reveal a clear association between the presence of disabilities in the household and increased discrimination. This discriminatory behaviour persists irrespective of whether the necessary refurbishments to accommodate the disabled tenant’s needs would be covered by the tenant or the landlord. Male landlords are the primary contributors to this discriminatory behaviour, especially regarding direct discrimination. The results obtained from our study are clear, indicating a pressing need to address and mitigate discrimination against tenants with moving disabilities in the rental housing market.
  • Eco-friendly biodegradation processes for affordable wastewater treatment in agricultural and horse stable environments
    (2025-12-01) Tsytlishvili, Kateryna
    A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
    The pursuit of sustainable livestock farming and environmentally responsible agricultural practices has spurred the development of innovative and affordable wastewater treatment technologies. This study investigates new biological treatment approaches that integrate the complementary processes of filtration, biosorption, and biodegradation to enhance eco-friendly wastewater management. A novel treatment concept was developed, representing a modern modification of the biosorption method that combines the oxidation of organic pollutants with ammonium reduction by an immobilized biocenosis, achieved through controlled aeration zones within a single bioreactor. An experimental facility was constructed and implemented at Feldman EcoPark (Kharkiv region, Ukraine) to serve the wastewater treatment needs of a contact zoo and animal rehabilitation center. The installation consists of a drainage treatment column with filter materials and a bioreactor – rotating biological contactor (RBC) containing microbial communities immobilized on inert carriers. Operational testing demonstrated high treatment efficiency, achieving up to 97.1% reduction in chemical oxygen demand (COD) and 85.6% removal of nitrogen compounds. Among the tested methods, biosorption proved particularly advantageous due to its cost-effectiveness, operational simplicity, and adaptability. The study also evaluated recycled polymers, including post-consumer PET, polycarbonate, and LDPE, as sustainable functional materials supporting filtration and microbial growth in wastewater treatment systems.
  • Seismic performance of a low yield point steel link with corrugated web for RC double-column bridge bent
    (2025-12-15) Feng, Sidong; He, Jun; Fan, Wei; Lin, Weiwei; Vasdravellis, George
    A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
    This study investigates the seismic performance of reinforced concrete (RC) double-column bridge bents incorporating low yield point steel (LYP steel) corrugated shear web (LCSW) links, with the aim of enhancing post-earthquake functional recoverability. Based on the previous experimental study, finite element (FE) simulations were conducted to further evaluate the hysteretic behavior of LCSW links, with a focus on key design parameters such as span-to-height ratio, flange slenderness ratio, flange-to-web thickness ratio, and corrugation profiles. The parametric study revealed three distinct failure modes in LCSW links: (1) yielding of the corrugated shear web (CSW) and flanges, (2) yielding of the CSW accompanied by local buckling of the flanges, and (3) global shear buckling of the CSW with yielding of the flanges. The use of LYP160 steel significantly enhanced the energy dissipation capacity of the links. Additionally, LCSW links with a span-to-height ratio of less than 1.0 and corrugation angles of at least 45° demonstrated improved hysteretic performance. Optimal design recommendations include a flange-to-web thickness ratio greater than 2.5 and an initial horizontal panel-to-wavelength ratio of 0.34 for CSW. FE simulations of RC double-column bridge bents with LCSW links demonstrated superior hysteretic behavior and stable energy dissipation compared to conventional RC bents, achieving a 65 % increase in peak load capacity and a 35 % improvement in ductility. Furthermore, bents equipped with LCSW links exhibited minimal damage relative to those with RC links, effectively protecting the main structural components and providing a reliable solution for rapid post-earthquake recovery of bridge bents. These findings highlight the potential of LCSW links as an innovative technology for enhancing the seismic resilience and recoverability of bridge structures.
  • Harnessing enhanced rock weathering for carbon neutrality : potential and challenges in China
    (2025-12) Cong, Lianghan; Lu, Shuaiyi; Jiang, Pan; Zheng, Tianqi; Zhang, Yanjun; Lu, Xiaoshu; Yu, Ziwang; Xu, Tianfu
    A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
    The escalating urgency of global climate change underscores the need for effective strategies to manage atmospheric CO₂ concentrations. Enhanced rock weathering (ERW) has emerged as a promising carbon removal technology. By applying powdered silicate rocks rich in calcium and magnesium, such as basalt, the dissolution process can be accelerated to sequester CO₂ in the form of dissolved inorganic carbon (DIC) within soil porewater, which is ultimately transported to the ocean, achieving long-term carbon storage. Using a life cycle assessment (LCA) framework, this study evaluates the feasibility of basalt-based ERW in China, focusing on its environmental and economic implications across various application scenarios. The findings highlight that basalt particle size and environmental conditions are critical determinants of weathering efficiency. Smaller particles, elevated temperatures, and acidic soils enhance dissolution rates but also result in higher energy consumption for grinding and increased carbon emissions. China's extensive basalt reserves, diverse climatic conditions, and vast agricultural lands create favorable conditions for large-scale ERW implementation. Nationwide application of basalt at p80 = 100 μm could sequester 0.2 Gt CO₂ by 2100, while finer particles (p80 = 10 μm) could achieve 0.5 Gt by 2060. Despite its potential, ERW faces challenges, including heavy metal release, uncertainties in long-term weathering rates, and cost constraints.
  • Stronger together : integrating geospatial data to understand human outdoor recreation
    (2025) Rinne, Tiina; Tenkanen, Henrikki; Poom, Age
    A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
    Outdoor recreation is an increasingly important activity worldwide. To support outdoor recreational opportunities, it is essential to understand when and where people recreate, what they do when recreating, who are using the outdoor spaces for recreation, and why. Human outdoor recreation behavior has been increasingly studied with a variety of novel geospatial data sources that have become available in the past few decades. Multiple studies have applied user-generated geospatial data from social media, mobile network operators, GNSS/GPS tracking, or participatory mapping to understand outdoor recreation. Yet, the extent of the use of these data sources remains unclear. In this scoping review, we characterize the quantity and quality of the literature using geospatial data sources and further outline what types of information have been drawn from these data sources. Our review shows that the analyzed geospatial data sources vary considerably in terms of the depth of relevant information that can be extracted from them. Future research and management interested in human outdoor recreation should apply a combination of geospatial data sources, mixing especially active and passive sensing approaches to unlock their information and knowledge potential.
  • Transferring territorial governance
    (2025) Purkarthofer, Eva; Stead, Dominic
    A3 Kirjan tai muun kokoomateoksen osa
    To what extent are conceptual ideas and institutional practices transferred from place to place, who is involved in the process of transfer, and from where do these ideas and practices originate? This chapter considers how these questions can be studied in the context of territorial governance. Our contribution identifies and explains four distinct analytical frameworks, each of which can be employed to study these questions – policy diffusion, policy transfer, policy mobilities, and Europeanization. Each framework focuses on different explanatory mechanisms and variables, reflecting the main academic disciplines in which the three frameworks were developed – policy diffusion and policy transfer from political science and public administration; policy mobilities from geography and urban studies; and Europeanization from European studies and political science. This chapter also discusses how the frameworks have been employed to study the transfer of ideas and practices related to territorial governance and offers an assessment of their strengths and weaknesses.
  • A Standardized Framework for Estimating In-Plane Modal Properties of Cable-Stayed Bridges with Algebraic Solutions
    (2025-07-22) Chen, Kefan; Li, Zhenkun; Hou, Wei; Zhou, Yongjun; Xu, Hao; Lin, Weiwei
    A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
    Accurate and efficient estimation of natural modal properties provides valuable insights for bridge design and structural health monitoring of cable-stayed bridges (CSBs). This paper proposes a standardized framework for directly estimating the in-plane natural modal properties of CSBs through algebraic calculations. The framework began with a two-step discretization: The entire CSB was discretized into multiple single-pylon substructures; each substructure was then discretized into an integrated system of discrete lumps connected by massless springs. Subsequently, the dynamic governing equations of the system were formulated based on the D’Alembert principle. After algebraically transforming the partial-differential terms using the finite difference method, the fundamental form of the eigenfunction capturing the global natural vibration was derived. Modification submatrices were derived accounting for different pylon-deck connecting types, forming a standardized solution framework. This framework enables the modal properties of CSBs to be estimated by inputting design parameters, applying the modification submatrices, and performing algebraic calculations. Finally, the accuracy and efficiency of the proposed method were validated through laboratory experiments and finite-element modal analysis of a real bridge, demonstrating its practical applicability to complex CSB structures.
  • Extraction of Time-Varying Bridge Frequency from Responses of Two-Axle Vehicles
    (2025) Li, Zhenkun; Lan, Yifu; Feng, Kun; Lin, Weiwei
    A4 Artikkeli konferenssijulkaisussa
    Bridge frequencies are important characteristics for its lifecycle condition assessment. The drive-by method, which only requires several sensors installed on the passing vehicle and employs vehicle responses to extract essential information about the bridge, has been a focus in the last two decades due to its low-cost and efficient nature. Such a method typically relies on the vehicle-bridge interaction and assumes that the bridge’s frequency does not change during the vehicle passage. However, practical applications indicate that the bridge frequencies can change during the interaction process, especially when the vehicle mass is comparable to that of the bridge. This paper further investigates the time-varying frequency of the vehicle-bridge interaction system incorporating a two-axle vehicle and a simply supported bridge. Firstly, the semi-analytical solution for time-varying bridge frequency was developed and numerical simulations were performed to verify the solution. Different frequency and mass ratios between the vehicle and bridge were explored. Then, the approach to acquire clear time-frequency representations of the vehicle responses for bridge frequency extraction was presented, and ridge extraction was employed to extract the traces of time-varying bridge frequencies. Finally, laboratory experiments, including a scaled two-axle vehicle and a steel beam model, were conducted and the effectiveness of the proposed method for extracting time-varying bridge frequencies was demonstrated.
  • Interpretable artificial intelligence approach for understanding shear strength in stabilized clay soils using real field soil samples
    (2025-05) Noureldin, Mohamed; Al Kabbani, Aghyad; Lopez, Alejandra; Korkiala-Tanttu, Leena
    A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
    Deep mixing, also known as deep stabilization, is a widely used ground improvement method in Nordic countries, particularly in urban and infrastructural projects, aiming to enhance the properties of soft, sensitive clays. Understanding the shear strength of stabilized soils and identifying key influencing factors are essential for ensuring the structural stability and durability of engineering structures. This study introduces a novel explainable artificial intelligence framework to investigate critical soil properties affecting shear strength, utilizing a data set derived from stabilization tests conducted on laboratory samples from the 1990s. The proposed framework investigates the statistical variability and distribution of crucial parameters affecting shear strength within the collected data set. Subsequently, machine learning models are trained and tested to predict soil shear strength based on input features such as water/binder ratio and water content, etc. Global model analysis using feature importance and Shapley additive explanations is conducted to understand the influence of soil input features on shear strength. Further exploration is carried out using partial dependence plots, individual conditional expectation plots, and accumulated local effects to uncover the degree of dependency and important thresholds between key stabilized soil parameters and shear strength. Heat map and feature interaction analysis techniques are then utilized to investigate soil properties interactions and correlations. Lastly, a more specific investigation is conducted on particular soil samples to highlight the most influential soil properties locally, employing the local interpretable model-agnostic explanations technique. The validation of the framework involves analyzing laboratory test results obtained from uniaxial compression tests. The framework demonstrates an ability to predict the shear strength of stabilized soil samples with an accuracy surpassing 90%. Importantly, the explainability results underscore the substantial impact of water content and the water/binder ratio on shear strength.
  • The Cadastral Surveyor in Finland
    (2024-08-27) Riekkinen, Kirsikka
    A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
  • Veden tajun jäljillä : vesityöläisten tarinoita
    (2025-12-19) Pihlajamäki, Mia; Pitkänen, Kati; Salo, Matti; Peltola, Taru; Latva-Somppi, Riikka; Svels, Kristina; Mishra, Himansu; Hiedanpää, Juha; Mäkelä, Maarit; Soini, Katriina
    A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
    Nykyiset teknistaloudelliset ratkaisut ja poliittiset mekanismit ovat toistaiseksi osoittaneet rajallisuutensa vesienhallinnassa. Tarvitaan uudenlaisia tapoja ymmärtää ihmisen ja veden vuorovaikutussuhdetta, vesiympäristössä tapahtuvia muutoksia ja saada aikaan toimintaa, jotta haitallisia ilmiöitä voitaisiin ehkäistä ja korjata. Artikkelin lähtökohtana on oletus siitä, että kaikilla ihmisillä on veden taju, joka rakentuu erilaisten tietämisen, tuntemisen ja tekemisen tapojen kautta ja niiden ympärille. Vesien parissa työskentelevillä veden taju on aivan erityinen ja se ohjaa heidän toimintaansa vesivarojen käyttöön, hallintaan ja vesiensuojeluun liittyen. Tämän artikkelin tavoitteena on esitellä veden tajun moninaisuutta ja pohtia, miten veden tietäminen ja tunteminen sekä veden kanssa toimiminen rakentavat veden tajua erilaisten vesityöläisten keskuudessa. Narratiivista lähestymistapaa käyttäen kuvaamme viittä erilaista työtä luonnonvesien parissa ja tutkimme 1) miten vesityöläiset käyttävät veden tajuaan, 2) miten heidän veden tajunsa kytkeytyvät paikkaan ja yhteisöön, ja 3) miten työ vesien parissa on muuttanut tekijöidensä veden tajua. Artikkelin tulokset auttavat ymmärtämään vesityöläisten vesisuhdetta tunnistamalla erilaisia teemoja, joiden kautta tietäminen ja tunteminen kytkeytyvät tekemiseen. Lisäksi tulokset tuovat esiin sen, miten tieto ja tunteet toimivat tekemisen ajureina, sekä sen, miten veden rooli vaihtelee kussakin työssä – vesi kohteena, kumppanina tai kontekstina – ja siten rakentaa erilaisia veden tajuja.
  • Future Orientation of Urban Development Megaprojects : The Case of Tripla, Helsinki
    (2025-01-20) Airikkala, Mikko; Seppälä, Antti; Toivonen, Saija; Mattila, Hanna
    A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
    Trends such as urbanization, accelerated technological development, and climate and biodiversity crises are posing profound challenges and a mounting need to address uncertainty and integrate sustainability in planning. These challenges are pronounced in megaprojects as they have vast and long-lasting effects on the built environment and the surrounding society. Deeper consideration of the futures perspective could help in responding to these demands, and it could increase the strategic and adaptive capacity of megaprojects both during project development and post-completion. The capacity to consider the future impacts of decisions is greatly affected by the processes and organizational environment of planning. Planning and real estate development organizations could increase such capacity by deeper consideration of the futures perspective. This article investigates how the futures perspective has been addressed in megaproject planning and discusses how the Organizational Future Orientation (OFO) model could be used in megaproject planning, through a case study of the urban development megaproject Tripla in Helsinki, Finland. OFO has been studied in futures and management studies literature, but the application of this knowledge to planning has been scarce. The research methods include literature review, document analysis, and stakeholder interviews. The findings indicate that the futures perspective is weakly present in megaproject planning and that the OFO model can be used to address this deficiency. In the case project, the focus was found to be on ensuring efficient project delivery. To achieve this, the project preferred simplifying the process, making major decisions inside a core group of stakeholders, and concentrating on effective execution of the process. The OFO analysis revealed major shortcomings in the project’s futures orientation. The findings increase understanding of how the futures perspective is present in urban development megaprojects, and how the Organizational Future Orientation model can be utilized as an analytical and normative framework in the planning context.