1,720,965 research outputs found
Report on findings of the A27 Everdingen-Hooipolder case:Added value of asset information in the tender
Full text linkAreaalinformatie is van cruciaal belang bij het nemen van weloverwogen beslissingen in infraprojecten. Actuele, betrouwbare en complete (ABC) areaalinformatie stelt opdrachtnemers in staat om strategieën te ontwikkelen, kosten nauwkeurig in te schatten en risico's beter te beheersen. De A27 Everdingen-Hooipolder aanbesteding biedt een geschikte casus om de toegevoegde waarde van ABC areaalinformatie te onderzoeken. De aanbesteder heeft uitgebreide ABC-toetsen uitgevoerd en gebruik gemaakt van Rijkswaterstaat's Objecttypenbibliotheek (OTL) om de areaalinformatie te structureren. Het onderzoek, uitgevoerd door Ruth Sloot van de Universiteit Twente, biedt inzichten in de voorbereiding en verloop van de tender. Het onderzoekt specifiek het gebruik van areaalgegevens in de ontwikkeling van inschrijvingen en in het inschatten en beprijzen van risico's door gegadigden in de aanbesteding.Over het algemeen wordt er positief teruggekeken op de tender en de toegevoegde waarde die de areaalinformatie heeft gehad. Zowel de aanbesteder als de gegadigden erkennen het belang van areaalgegevens in de tender. Een uniforme structuur, gebaseerd op de OTL, heeft geleid tot een logische vindbaarheid van areaalgegevens en heeft bijgedragen aan een efficiëntere afhandeling van vragen. Bij het ontvangen van een vraag kon gemakkelijk worden gecontroleerd of de informatie was ontvangen en al dan niet was doorgegeven. Dit heeft geleid tot een verbeterde traceerbaarheid van de ontvangen en geleverde informatie. Daarnaast heeft de uitgebreide ABC-toetsen bijgedragen aan een compleet dossier van areaalgegevens, waarbij met name het verstrekken van bewerkbare versies van documenten zeer gewaardeerd werd door de gegadigden.Desondanks zijn er ook verschillende verbeterpunten naar voren gekomen. In de eerste plaats is de actualiteit van de gegevens met betrekking tot de verharding, met name het asfaltdeklaag, een belangrijk aandachtspunt. Actuele gegevens, met name voor kunstwerken en asfalt, werden als essentieel beschouwd om adequaat advies te kunnen geven. Daarnaast ontbraken gegevens over het onderliggende wegennet (OWN), hemelwaterafvoer en verkeerstechnische installaties. Gegadigden waren van mening dat deze ontbrekende informatie van belang was omdat het inzicht gaf in potentiële aandachtspunten, kosten en toekomstig onderhoud.Zonder ABC-areaalinformatie kunnen toekomstige opdrachtnemers geen nauwkeurige inschatting maken van de kosten en risico's van een project. Aan de andere kant, 'alleen' ABC-areaalinformatie is niet voldoende. Uit dit onderzoek blijkt dat de meerwaarde van ABC-areaalgegevens ook afhankelijk is van de inkoopstrategie van een project. Een aanbesteding blijft een competitie waarbij gegadigden logischerwijs de nadruk leggen op het winnen van de aanbesteding. Hierdoor kan het voorkomen dat er geen directe relatie bestaat tussen de inschatting van risico's en de prijsstelling van risico's. Het beprijzen van risico's op basis van de inschattingen van gegadigden, gebaseerd op areaalgegevens, kan leiden tot een hogere inschrijving en dus het verliezen van een tender. Een inkoopstrategie met de juiste prikkels voor het inschatten en beprijzen van risico's is daarom van belang om de meerwaarde van ABC-areaalinformatie te kunnen benutten
Toekomstbestendige infra:Hoe overbruggen we de kloof tussen infraprojecten en assetmanagement?
Full text linkRevealing the project and asset management divide:Why infrastructure agencies struggle with IT transformation
Full text linkAmid aging infrastructures, rapid urbanization, and the impacts of climate change, infrastructure agencies are under pressure to modernize their asset information management to enhance the future provision of infrastructure services. However, transforming the current information technology (IT) landscape presents significant challenges. Drawing from three comprehensive, practice-oriented case studies, this PhD dissertation illuminates what these challenges are and why they arise. It reveals the divide between organizing work in infrastructure projects, on the one hand, and executing asset management, on the other hand. Ultimately, findings from this dissertation can guide infrastructure agencies in designing strategies that fully consider the complexities and magnitude of transforming from project-based organizations to data-driven asset managers
Technology Adoption in Public Client Organisations: Institutional Perspectives from Sweden and the Netherlands
No full textPublic construction clients are slow to adopt new sustainable technologies, which is problematic if public clients want to lead the charge of constructing for the future. This inertia is investigated by studying two cases: Swedish public housing companies and the Dutch public infrastructure agency. By applying an institutional logics framework and comparing the challenges of technology adoption in two different contexts (Sweden vs. the Netherlands, housing vs. infrastructure, small client vs. large client), the findings show how technology adoption is difficult due to uncertainty avoidance and institutionalised norms, values and physical infrastructure that do not support necessary changes needed to adopt new technologies. Also, the organisations struggle to reconcile conflicting logics of cost vs. sustainability, efficiency vs. flexibility, and a short-term project-related corporate logic vs. longterm asset management logic. The paper contributes an understanding of how and why changes that enable technology adoption is limited in public client organisations, and what issues must be addressed for public clients to construct for the future
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Technology Adoption in Public Client Organisations:Institutional Perspectives From Sweden and The Netherlands
Full text linkPublic construction clients are slow to adopt new sustainable technologies. This inertia is investigated by studying two cases of public clients: Swedish public housing companies and the Dutch public infrastructure agency. By applying an institutional logics framework and comparing and contrasting the experience of technology adoption in two different geographical contexts and in two different sub-sections of the construction sector (housing vs. infrastructure, small client vs. large client), the findings show how technology adoption is difficult due to uncertainty avoidance and institutionalized norms, values and physical infrastructure that do not support the adoption of new technologies. In addition, the organisations struggle to reconcile conflicting logics of cost vs. sustainability, efficiency vs. flexibility, and a short-term project-related corporate logic vs. long-term asset management logic. The paper contributes an understanding of how and why technology adoption is limited in public client organisations, and what issues must be addressed to construct for the future
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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