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  • 101.
    Aguiar Borges, Luciane
    KTH, School of Architecture and the Built Environment (ABE), Urban Planning and Environment, Urban and Regional Studies.
    Using the Past to Construct Territorial Identities in Regional Planning: the Case of Mälardalen, SwedenManuscript (preprint) (Other academic)
    Abstract [en]

    This study examines how the past is used in the construction of regional identity narratives in policy discourses and documents. Despite assumptions that regional identity is based on shared culture, some authors argue that new forms of regional identity have emerged as the consequence of regions’ involvement in wider networks. Identity has been pursued as an asset to regional attractiveness and economic growth and, as such, is shaped by regional development strategies concerning particular social groups. Socially shared representations of the past through history, cultural heritage and collective memory play an important role in this process since the past is a powerful resource that may be used to construct images of places, legitimizing claims on territories. Document analysis and interviews with planners are used to analyse strategies for regional development in five counties located in the Mälardalen Region, Sweden. This study shows that regional strategies are guided by identity narratives framing regions from an exclusive outside perspective, leaving internal qualities unnoticed. The past is used to structure these narratives and construct identities that serve economic growth rather than the integration of the plural heritages of the region.

  • 102.
    Aguiar Borges, Luciane
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Urban Planning and Environment, Urban and Regional Studies.
    Adolphson, Marcus
    KTH, School of Architecture and the Built Environment (ABE), Urban Planning and Environment, Urban and Regional Studies.
    The role of official heritage in regional spaces2016In: Urban Research and Practice, ISSN 1753-5069, E-ISSN 1753-5077, Vol. 9, no 3, p. 290-310Article, review/survey (Refereed)
    Abstract [en]

    Following the argument that increasing mobility has scattered consumption throughout Sweden’s regions, this study investigates how individuals’ consumption choices are influenced by official heritage. It argues that individuals’ everyday routines highlight the role played by heritage in socio-economic regional change, challenging traditional planning systems and altering individuals’ relationships with their environments, leading to new values being placed on official heritage. This argument was tested using interviews and questionnaires in Mariefred, Sweden, and demonstrates that official heritage plays multiple and contrasting roles, including the use of heritage as an attempt to reconcile opposing principles such as progress/development and tradition/conservation. 

  • 103.
    Aguiar Borges, Luciane Aguiar
    et al.
    KTH, School of Architecture and the Built Environment (ABE), Urban Planning and Environment, Urban and Regional Studies.
    Humer, Alois
    University of Vienna.
    Smith, Christopher
    Europe's possible SGI futures: territorial settings and potential policy paths2015In: Services of General Interest and Territorial Cohesion: European Perspectives and National Insights / [ed] Heinz Fassmann, Daniel Rauhut, Eduarda Marques da Costa and Alois Humer, Vienna: Vienna University Press , 2015, 1, p. 123-146Chapter in book (Refereed)
  • 104.
    Aguilar-Sommar, Ruth S.
    et al.
    KTH.
    Poler, R.
    Integrated analysis of the production planning process using Trampolin and DGRAI as process modelling tools2006In: Production Planning and Control, ISSN 0953-7287, Vol. 17, no 1, p. 31-43Article in journal (Refereed)
    Abstract [en]

    This paper provides managers and other decision-makers with support on how to analyse business processes by presenting the use and features of Trampolin and DGRAI as complementary tools for the analysis of business processes to support enterprise integration. Two business process models were built for the production planning process in a large telecommunication company one using Trampolin and the other using DGRAI. The former offers a statistical analysis of the process showing the information required, responsible and other features of each activity along the process besides its links and sequence. The second gives a more dynamic analysis focusing on the process' decisional flow and its associated information and resources permitting to simulate and analyse the consequences of the decision-making process. A brief description of what may be analysed with each tool followed by analytical insights, and an analysis of how these tools support enterprise integration, are provided. Also the paper shows the advantages and disadvantages of each tool as well as some common and complementary characteristics found in the models.

  • 105.
    Agustina, Sri Pascarini
    KTH, School of Architecture and the Built Environment (ABE), Urban Planning and Environment, Urban and Regional Studies.
    Collaborative Governance in the Municipal Solid Waste Sector: Understanding the Collaboration Process in the Jakarta Collaboration Forum2023Independent thesis Advanced level (degree of Master (One Year)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    Municipal solid waste (MSW) management is a global concern due to urban population growth, particularly in developing countries. Collaboration among stakeholders in the MSW sector is vital for addressing the challenges associated with MSW management. However, initiating and operating collaborations in this domain are complex and have received limited attention in existing research. This study aims to understand collaboration in the MSW sector, specifically focusing on the factors influencing collaboration initiation and the collaboration process. The study utilizes the collaborative governance framework developed by Emerson et al. (2012) and conducts a case study on Jakarta's MSW sector, examining the Large-Scale Social Collaboration (LSSC) forum for waste management.

    The analysis highlights the significant influence of the political and policy landscape in creating an enabling environment for collaboration in Jakarta's MSW sector. Non-governmental organizations (NGOs) play a crucial role in initiating and nurturing the collaboration forum. The presence of discussion spaces for the discovery of shared interests among stakeholders contributes to building trust. However, challenges arise from the diverse range of participants in the forum, hindering the identification of joint action. Government endorsement and the institutionalization of collaboration through a government decree are essential for fostering collaboration. This study suggests further research on applying collaborative governance in various MSW collaboration settings and investigating the interconnections among the elements.

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  • 106.
    AGUZ, JOSEF
    et al.
    KTH, School of Industrial Engineering and Management (ITM), Industrial Economics and Management (Dept.).
    MARKIEWICZ, OSSIAN
    KTH, School of Industrial Engineering and Management (ITM), Industrial Economics and Management (Dept.).
    Exploring the Relationship Between HousingPrices and Stock Prices2018Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    This study investigates the long- and short-run relationship between stock- and housingprices in Finland, Denmark, Norway and Sweden between 1987-2017 and 1995-2017 with data from OECD statistics. By using interest rate as a control variable and Johansen's Test for Cointegration, the results show a significant relationship for Finland during the period 1995-2017. The short-run analysis implies a credit effect, which is inline with previous studies. However, in Denmark, Norway and Sweden the analysis show no sign of cointegration. A possible explanation for the insignificant results could be the high degree of policy implementations and changes to market structures in the early 1990s, which theoretically could be controlled for by including additional control variables in the analysis.

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  • 107. Agélii Genlott, Annika
    et al.
    Grönlund, Åke
    Viberg, Olga
    KTH, School of Electrical Engineering and Computer Science (EECS), Human Centered Technology, Media Technology and Interaction Design, MID.
    Andersson, Annika
    Leading dissemination of digital, science-based innovation in school–a case study2021In: Interactive Learning Environments, ISSN 1049-4820, E-ISSN 1744-5191, p. 1-11Article in journal (Refereed)
    Abstract [en]

    Digitalizing school is a process that comes with challenges. It requires strategic leadership and transformational change to work processes. Nevertheless, some succeed, and it is useful to understand what makes for success. This paper studies the challenges of leading digitalization of education in a city which decided to implement an IT-supported method for teaching literacy in primary schools. The method required transformational change; teachers not only had to learn to use technologies, they also had to review their pedagogy. This study is guided by the Diffusion of Innovation theory and draws on interviews with school principals. We find that the critical factors relate to the communication channel, the social system within and across schools, and the time perspective.

  • 108. Ahlberg, Beth Maina
    et al.
    Maina, Faith
    Kubai, Anne
    Khamasi, Wanjiku
    Ekman, Marianne
    KTH, School of Industrial Engineering and Management (ITM), Industrial Economics and Management (Dept.), Organization and management.
    Lundqvist-Persson, Cristina
    "A child, a tree": Challenges in building collaborative relations in a community research project in a Kenyan context2016In: Action Research, ISSN 1476-7503, E-ISSN 1741-2617, Vol. 14, no 3, p. 257-275Article in journal (Refereed)
    Abstract [en]

    This paper highlights the potential for basing participatory action research on priorities identified by communities. The case builds on a research project by the Social Science Medicine Africa Network (Soma-net) focusing on AIDS prevention among school youth in Kajiado in Kenya during 2003-2006. It became clear from that study just how complex it is to promote open communication on issues of sexuality considered critical for sexual health promotion. Towards the end of that study a spin-off in the form of a concept a child, a tree or tree planting evolved and the research thereafter continued as a partnership between the school community and the researchers. The focus then was on understanding how health promotion could be integrated into other aspects of community life. The concept and tree planting when implemented created a sense of ownership among the pupils largely because they were placed at the centre of the development activities. The story illuminates the nature of change developing in the course of the project, but also the challenges and complexity of creating and maintaining collaborative relations in the face of cultural and gender power dynamics and interventions imposed from outside the community.

  • 109. Ahlberg, J
    et al.
    Claesson, L
    Nauwelarts de Agé, M
    Näsman, P
    KTH, School of Architecture and the Built Environment (ABE), Centres, Centre for Transport Studies, CTS. KTH, School of Architecture and the Built Environment (ABE), Transport Science, Transport and Location Analysis.
    Relationen mellan upplevelsemått och fysiologiska mått på fysisk ansträngning1980In: Information från Psykotekniska institutet, ISSN 0347-2795, no 115Article in journal (Other academic)
  • 110.
    Ahlberg, Victor
    et al.
    KTH, School of Industrial Engineering and Management (ITM), Learning.
    Frid, Julia
    KTH, School of Industrial Engineering and Management (ITM), Learning.
    Automation and Autonomy: Developing and Evaluating Open Learning Material on IR Cameras in Automation Applications2019Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    This master thesis project was based on the development and evaluation of an open learning material in thermal imaging for automation applications. The outsourcer – FLIR Systems – wanted a three-day course covering all necessary topics for infrared cameras in automation applications. These topics include thermography, optics, detectors, networks, protocols, and more. The open learning material was designed to function as a three-day, self-paced, distance course, and it was based on theories of andragogy, self-directed learning and transformative learning. The master thesis process was essentially divided into two phases: the development phase and the evaluation phase. The method for the development phase was based on a literature study. The literature on creating open learning material included ways of compensating for the lack of social interaction in distance courses, such as a friendly, warm narrator using the pronoun “I”, encouraging phrases, and self-assessment questions (SAQs). An SAQ is a framing of question intended to guide the learner towards self-assessment of his or her learning and knowledge. The vital part of the SAQ is the response, where not only the correct answer is given, but feedback on the wrong choices too. The development of the open learning material was an iterative process where discussion with supervisors at FLIR Systems and KTH Royal Institute of Technology led to improvements of the material.

    The evaluation phase consisted of two tests with test subjects. The first test was conducted by sending a sample unit of the material to test subjects around the world along with a questionnaire. The main objective was to test the tone and style of the material. There were variations in the result, but the majority found the material friendly and readable. The second test was an in-house test with three participants. Three sample units of the material was used, and the main objective was to test the usability of the material and the test subjects’ perceived learning process. The usability of the material varied with the three test subjects and depended on their technological prerequisites and reading comprehension in English. All test subjects responded positively to their perceived learning outcome.

    The following conclusions were drawn: the open learning material has the potential to promote autonomous and self-directed learners and can be used as a basis for further development – such as web-based courses and teacher-led classes.

    The open learning material as a whole and the results and analysis from the tests are included as appendices.

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  • 111.
    Ahlbom, Håkan
    et al.
    Högskolan i Gävle.
    Bjelksäter, Ylva
    Högskolan i Gävle.
    Hartell, Eva
    Stockholms Universitet.
    Cooperative Methods for Investigating the Influence of Swedish Compulsory Technology Education2009In: Strengthening the Position of Technology Education in the Curriculum. Pupils Attitudes Towards Technology: Proceedings PATT-22 Conference / [ed] Arien Bekker, Ilja Mottier, Marc J. de Vries, Delft, 2009, p. 6-13Conference paper (Refereed)
    Abstract [en]

      Why is the interest for technical education decreasing? What makes other fields of education more popular? Technology was introduced as a mandatory subject in Swedish compulsory school in 1980 and got its own syllabus when the current national curriculum was introduced in 1994. Each school can decide when and how the pupils get technology education, but every pupil is expected and entitled to reach the national goals. One of the goals of the Swedish compulsory school is to develop an interest for technology as well as capability and judgment in handling technical issues. In order to find out if pupils reach the national goals in Technology three different Ph.D. projects are launched in Swedish schools. How do we actually know that pupils learn what they are entitled to? How is the Technology syllabus interpreted, in theory and practice? Does the Technology subject really develop an interest in technology, and does it inspire to further technical studies? The interpretation of the syllabus will be studied through observations. To get answers, whether the Technology subject has any impact on the interest and the choice of further studies, interviews are made among pupils and teachers in compulsory school as well as in upper secondary school. The findings of the cooperating projects will together contribute with answers about the state of the technology education in the Swedish compulsory school system, and how the subject could be developed in the future.

  • 112.
    Ahlbäck Öberg, Shirin
    et al.
    Uppsala Universitet.
    Bornemark, Jonna
    Södertörns Högskola.
    Bringselius, Louise
    Lunds Universitet.
    Hall, Patrik
    Malmö Universitet.
    Ivarsson Westerberg, Anders
    Södertörns Högskola.
    Lejon, Britta
    Fackförbundet ST.
    Packendorff, Johann
    KTH, School of Industrial Engineering and Management (ITM), Industrial Economics and Management (Dept.), Organization and management.
    Pierre, Jon
    Göteborgs Universitet.
    Sundström, Göran
    Stockholms Universitet.
    Svensson, Kerstin
    Lunds Universitet.
    Sverige kan inte längre styras som ett företag2023In: Dagens Nyheter, ISSN 1101-2447, p. 5-5Article in journal (Other (popular science, discussion, etc.))
  • 113.
    Ahlenius, Martin
    KTH, School of Architecture and the Built Environment (ABE), Real Estate and Construction Management, Real Estate Business and Financial Systems.
    The impact of motivation and person-job fit on employee turnover among Swedish real estate brokers: A mixed method approach2022Doctoral thesis, comprehensive summary (Other academic)
    Abstract [en]

    Residential real estate is a vital part of the economy, and homes are important for individuals for both financial and emotional reasons. Residential homes change owners for numerous reasons, and there is a need for these transactions to be secure and efficient from both the economic and individual perspective. The general idea of residential real estate brokerage is to facilitate these transactions securely and efficiently. Real estate brokerage has therefore captured both media as well as scholarly interest. Some scholars even argue that brokerage is a relevant research and literature field of its own. Like other occupations within sales, the brokerage industry suffers from problems connected to recruiting and retaining employees, as put forth by several spokespersons within the industry and scholars alike. Prior studies argue that there is a need for further studies that describe the occupational life cycle of brokers and employee turnover antecedents, such as intrinsic motivation. Hence, the overarching purpose of this thesis is to describe and analyze occupational turnover and its antecedents among Swedish real estate brokers. This thesis sprung out of a firsthand occupational experience of Swedish brokerage, curiosity, and an abductive stance toward knowledge creation. It is primarily explorative, and the embedded articles consist of different types of methodologic approaches and therefore also different ways of gathering data such as interviews, surveys, and registered data. All data solely involves Swedish real estate brokers. Results of the four articles show that the occupational life cycle of brokers is significantly longer than expected and that Swedish brokers display high levels of work-related intrinsic motivation, occasionally rooted in affective commitment towards customers and gained trust from sellers. Furthermore, being driven by gained trust and customer relations has a positive effect on person-job fit which in turn reduces turnover intentions. A majority of the results within the four articles are not in line with prior studies, which is interesting and prompts speculation. The service landscape of brokerage, and particularly Swedish brokerage due to the broker’s intermediary role and personal responsibility for the entire transaction, arguably drives intrinsic motivation and reduces turnover. This is enhanced by the high educational threshold for becoming a broker in Sweden. This thesis contributes to the literature field of brokerage by providing insights about what motivates brokers and the theoretical field of person-job fit by suggesting ways of improving the operationalization and the validity of person-job fit.

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  • 114. Ahlenius, Martin
    et al.
    Berggren, Björn
    KTH, School of Architecture and the Built Environment (ABE), Real Estate and Construction Management, Real Estate Business and Financial Systems.
    Gerdemark, Tommy
    Kågström, Jonas
    Åge, Lars-Johan
    The occupational life cycle of real estate brokers: a cohort study2022In: Journal of European Real Estate Research, ISSN 1753-9269, E-ISSN 1753-9277, Vol. 15, no 3, p. 351-367Article in journal (Refereed)
    Abstract [en]

    Purpose The purpose of this article is to describe and analyze the occupational life cycle of Swedish real estate brokers. Design/methodology/approach Voluntary turnover among real estate brokers could lead to occupational turnover and/or employee turnover and has been described as problematic by both practitioners and researchers alike. Most previous studies focusing on this issue have explored connections between real estate brokers' personality, economic and market conditions and turnover. Employee turnover involves shifting jobs within the profession (real estate brokerage), whereas occupational turnover concerns movement to a job not related to the real estate brokerage profession. Both perspectives on turnover are however lacking data about the average time spent as a broker. This study fills this gap by exploring real estate brokers' life cycle through data analysis using a cohort study consisting of a sample of 5,304 real estate brokers registered and/or deregistered over a ten-year period from 2010 to 2019. Findings The analysis show that the decline is almost linear, resulting in 50% of the newly registered real estate brokers remain in the occupation eight years after registration. These findings are not in line with previous assumptions as the real estate brokers' life cycle is substantially longer. The results also reveal that there are differences in life cycles due to gender and year of registration. Originality/value The analysis of longitudinal, aggregated data on the life cycle of real estate brokers is highly relevant as it serves as a point of reference for future longitudinal studies analyzing the motives for leaving the occupation.

  • 115.
    Ahlenius, Martin
    et al.
    Department of Business and Economics Studies, University of Gävle, Gävle, Sweden.
    Berggren, Björn
    KTH, School of Architecture and the Built Environment (ABE), Real Estate and Construction Management, Real Estate Business and Financial Systems.
    Kågström, Jonas
    Department of Business and Economics Studies, University of Gävle, Gävle, Sweden.
    Exploring Motivational Factors Among High Performing Real Estate Brokers: The Swedish Case2021In: Journal of Real Estate Practice and Education, ISSN 1521-4842, Vol. 23, no 1, p. 20-37Article in journal (Refereed)
    Abstract [en]

    The purpose of this exploratory case study is to analyze the role of relational motivation for high-performing real estate brokers in Sweden. The concept of relational motivation, or relatedness, is explored through both affective and calculative commitment. The data in this study come from in-depth interviews with real estate brokers. The results show that the brokers are committed to their clients, in an affective and a calculative way. All of the participants expressed signs of being emotionally involved in their customer relations, often in terms of genuine interest in, and caring for, their clients. The existence of relatedness toward customers in a brokerage context contributes to the discussion on what motivates high-performing real estate brokers. By viewing relatedness as a trigger to engage in more customer relationships, the intrinsic motivation can be seen as a strong antecedent to individual performance. 

  • 116.
    Ahlenius, Martin
    et al.
    KTH, School of Architecture and the Built Environment (ABE).
    Berggren, Björn
    Åge, Lars-Johan
    The impact of gained trust on person-job fit and occupational turnover– The case of residential real estate brokers –Manuscript (preprint) (Other academic)
    Abstract [en]

    This study explores if received trust is intrinsically motivating and if it is associated with subjective person-job fit and occupational turnover intentions in the Swedish brokerage setting. Results from 397 real estate brokers showed that brokers are driven by the gained trust from their sellers and that gained trust is a vital part of person-job fit within brokerage. Furthermore, increased levels of person-job fit strongly reduce occupational turnover intentions within brokerage. This study offers further insights into intrinsic motivation in professional service settings and indicates that certain types of customer interactions help to fulfill the basic psychological needs of competence and relatedness.

  • 117.
    Ahlenius, Martin
    et al.
    KTH, School of Architecture and the Built Environment (ABE).
    Kågström, Jonas
    Do intrinsic rewards matter for Swedish real estate brokers?- A quantitative empirical generalization-Manuscript (preprint) (Other academic)
    Abstract [en]

    Purpose - Intrinsic motivation affects job satisfaction and turnover intention. Still, previous motivational studies among real estate brokers (brokers) have primarily focused on extrinsic rewards leaving intrinsic rewards/motivation practically unexplored. The purpose of this study is therefore to evaluate the role of both satisfaction with intrinsic rewards (SIR) and satisfaction with extrinsic rewards (SER) on job satisfaction and turnover intention among Swedish brokers.

    Design/methodology/approach - This article is an empirical generalization and extension of Mosquera et al.’s (2020) article conducted among brokers in Portugal. Using a sample of 910 Swedish brokers, the study analyzes a conceptual framework and tests hypotheses by using partial least squares (PLS).

    Findings - Results indicate that SIR has a very strong impact on job satisfaction, which is not the case in the Portuguese sample. On the other hand, SER does not have an impact on job satisfaction, which is the case in the Portuguese sample. SIR does not have an impact on turnover intention in the Swedish sample, whereas SER does. Job satisfaction has twice the positive impact on turnover intention in the Swedish sample compared to the Portuguese. Furthermore, job satisfaction mediates the relationship between SIR/SER and turnover intention.

    Research limitations/implications - Findings of this study extend the existing literature of satisfaction with extrinsic and in particular intrinsic rewards on job satisfaction and turnover intention in the context of the brokerage industry. The most interesting difference between the samples is that Swedish brokers display much higher levels of satisfaction with intrinsic rewards. On the other hand, Swedish brokers appear to be less driven by extrinsic rewards, which is not in line with prior studies within brokerage.

    Practical implications - Both managers and students planning to become brokers should consider that SIR has a stronger impact on job satisfaction than SER. What are perceived as intrinsic rewards, however, is highly subjective, which is troublesome from a managerial perspective, even more so as SIR is much harder to influence than SER. Given that intrinsic motivation is primarily a consequence of needs fulfillment, screening of applicants for person-job fit ought to increase job satisfaction and reduce turnover given its focus on the congruence between job demands and worker’s needs, respectively what a job provides and the worker’s needs.

    Originality/value - This study contributes to the brokerage research field by indicating that being a broker differs substantially between countries and that intrinsic rewards matter for Swedish brokers.

  • 118.
    Ahlgren, Per
    University College of Borås.
    A note on search formulation redundancy1998In: Journal of Documentation, ISSN 0022-0418, E-ISSN 1758-7379, Vol. 54, no 3, p. 352-354Article in journal (Refereed)
  • 119.
    Ahlgren, Per
    KTH, School of Education and Communication in Engineering Science (ECE), Department for Library services, Language and ARC, Publication Infrastructure.
    Bibliometric study of Swedish research institutes, 1980-20142016Report (Other academic)
    Abstract [en]

    The study was performed by the bibliometric group at KTH, within the project Building a structure at KTH of bibliometric capacity for international comparative analysis (BibCap), jointly funded by VINNOVA (Sweden’s innovation agency) and KTH.

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  • 120.
    Ahlgren, Per
    Stockholm University, Sweden.
    Den norska modellen sett från Sverige2008In: Forskningspolitikk, ISSN 0333-0273, Vol. 31, no 1, p. 18-18Article in journal (Other academic)
  • 121.
    Ahlgren, Per
    University College of Borås.
    On a cognitive search strategy1999In: Digital libraries: interdisciplinary concepts, challenges and opportunities, 1999, Vol. 1, p. 245-253Conference paper (Refereed)
  • 122.
    Ahlgren, Per
    University College of Borås.
    Passage retrieval: en introduktion till ett aktuellt forskningsområde2000In: Svensk biblioteksforskning, ISSN 0284-4354, E-ISSN 1653-5235, no 2, p. 5-20Article in journal (Other academic)
  • 123.
    Ahlgren, Per
    University College of Borås.
    Query expansion2001In: Human IT, ISSN 1402-1501, E-ISSN 1402-151X, no 4, p. 157-176Article in journal (Other academic)
  • 124.
    Ahlgren, Per
    University College of Borås.
    The effects of indexing strategy-query term combination on retrieval effectiveness in a Swedish full text database2004Doctoral thesis, monograph (Other academic)
    Abstract [en]

    This thesis deals with Swedish full text retrieval and the problem of morphological variation of query terms in thedocument database. The study is an information retrieval experiment with a test collection. While no Swedish testcollection was available, such a collection was constructed. It consists of a document database containing 161,336news articles, and 52 topics with four-graded (0, 1, 2, 3) relevance assessments.

    The effects of indexing strategy-query term combination on retrieval effectiveness were studied. Three of five testedmethods involved indexing strategies that used conflation, in the form of normalization. Further, two of these threecombinations used indexing strategies that employed compound splitting. Normalization and compound splittingwere performed by SWETWOL, a morphological analyzer for the Swedish language. A fourth combinationattempted to group related terms by right hand truncation of query terms. A search expert performed the truncation.The four combinations were compared to each other and to a baseline combination, where no attempt was made tocounteract the problem of morphological variation of query terms in the document database.

    Two situations were examined in the evaluation: the binary relevance situation and the multiple degree relevancesituation. With regard to the binary relevance situation, where the three (positive) relevance degrees (1, 2, 3) weremerged into one, and where precision was used as evaluation measure, the four alternative combinationsoutperformed the baseline. The best performing combination was the combination that used truncation. Thiscombination performed better than or equal to a median precision value for 41 of the 52 topics. One reason for therelatively good performance of the truncation combination was the capacity of its queries to retrieve different partsof speech.

    In the multiple degree relevance situation, where the three (positive) relevance degrees were retained, retrievaleffectiveness was taken to be the accumulated gain the user receives by examining the retrieval result up to givenpositions. The evaluation measure used was nDCG (normalized cumulated gain with discount). This measurecredits retrieval methods that (1) rank highly relevant documents higher than less relevant ones, and (2) rankrelevant (of any degree) documents high. With respect to (2), nDCG involves a discount component: a discount withregard to the relevance score of a relevant (of any degree) document is performed, and this discount is greater andgreater, the higher position the document has in the ranked list of retrieved documents.

    In the multiple degree relevance situation, the five combinations were evaluated under four different user scenarios,where each scenario simulated a certain user type. Again, the four alternative combinations outperformed thebaseline, for each user scenario. The truncation combination had the best performance under each user scenario.This outcome agreed with the performance result in the binary relevance situation. However, there were alsodifferences between the two relevance situations. For 25 percent of the topics and with regard to one of the four userscenarios, the set of best performing combinations in the binary relevance situation was disjunct from the set of bestperforming combinations in the multiple degree relevance situation. The user scenario in question was such thatalmost all importance was placed on highly relevant documents, and the discount was sharp.

    The main conclusion of the thesis is that normalization and right hand truncation (performed by a search expert)enhanced retrieval effectiveness in comparison to the baseline, irrespective of which of the two relevance situationswe consider. Further, the three indexing strategy-query term combinations based on normalization were almost asgood as the combination that involves truncation. This holds for both relevance situations.

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    Thesis
  • 125.
    Ahlgren, Per
    Stockholm University.
    The SNIP indicator in relation to the Norwegian model2014In: Proceedings of the 19th International Conference on Science and Technology Indicators, 2014, p. 6-13Conference paper (Refereed)
  • 126.
    Ahlgren, Per
    Stockholm University.
    Two elements of evaluative bibliometrics in Sweden: The national indicator and the bibliometric unit of Stockholm University2015In: Ronald Rousseau and the development of Scientomerics in China.: The 8th International Conference on Scientometrics and  University Evaluation, 2015, p. 66-75Conference paper (Other academic)
  • 127.
    Ahlgren, Per
    et al.
    KTH, Library, Bibliometrics.
    Colliander, C.
    Sjögårde, Peter
    KTH, School of Education and Communication in Engineering Science (ECE). Department of ALM, Uppsala University, Uppsala, Sweden.
    Exploring the relation between referencing practices and citation impact: A large-scale study based on Web of Science data2018In: Journal of the Association for Information Science and Technology, ISSN 2330-1635, E-ISSN 2330-1643, Vol. 69, no 5, p. 728-743Article in journal (Refereed)
    Abstract [en]

    In this large-scale contribution, we deal with the relationship between properties of cited references of Web of Science articles and the field normalized citation rate of these articles. Using nearly 1 million articles, and three classification systems with different levels of granularity, we study the effects of number of cited references, share of references covered by Web of Science, mean age of references and mean citation rate of references on field normalized citation rate. To expose the relationship between the predictor variables and the response variable, we use quantile regression. We found that a higher number of references, a higher share of references to publications within Web of Science and references to more recent publications correlate with citation impact. A correlation was observed even when normalization was done with a finely grained classification system. The predictor variables affected citation impact to a larger extent at higher quantile levels. Regarding the relative importance of the predictor variables, citation impact of the cited references was in general the least important variable. Number of cited references carried most of the importance for both low and medium quantile levels, but this importance was lessened at the highest considered level.

  • 128.
    Ahlgren, Per
    et al.
    Stockholm University.
    Colliander, Cristian
    Document-document similarity approaches and science mapping: Experimental comparison of five approaches2009In: Journal of Informetrics, ISSN 1751-1577, E-ISSN 1875-5879, Vol. 3, no 1, p. 49-63Article in journal (Refereed)
  • 129.
    Ahlgren, Per
    et al.
    Stockholm University.
    Colliander, Cristian
    Textual content, cited references, similarity order, and clustering: An experimental study in the context of science mapping2009In: Proceedings of the 12th International Conference on Scientometrics and Informetrics (Volume 2), 2009, p. 862-873Conference paper (Refereed)
  • 130.
    Ahlgren, Per
    et al.
    Stockholm University, Sweden.
    Colliander, Cristian
    Persson, Olle
    Field normalized citation rates, field normalized journal impact and Norwegian weights for allocation of university research funds2012In: Scientometrics, ISSN 0138-9130, E-ISSN 1588-2861, Vol. 92, no 3, p. 767-780Article in journal (Refereed)
    Abstract [en]

    We compared three different bibliometric evaluation approaches: two citation-based approaches and one based on manual classification of publishing channels into quality levels. Publication data for two universities was used, and we worked with two levels of analysis: article and department. For the article level, we investigated the predictive power of field normalized citation rates and field normalized journal impact with respect to journal level. The results for the article level show that evaluation of journals based on citation impact correlate rather well with manual classification of journals into quality levels. However, the prediction from field normalized citation rates to journal level was only marginally better than random guessing. At the department level, we studied three different indicators in the context of research fund allocation within universities and the extent to which the three indicators produce different distributions of research funds. It turned out that the three distributions of relative indicator values were very similar, which in turn yields that the corresponding distributions of hypothetical research funds would be very similar.

  • 131.
    Ahlgren, Per
    et al.
    Stockholm University.
    Grönqvist, Leif
    Evaluation of retrieval effectiveness with incomplete relevance data: theoretical and experimental comparison of three measures2008In: Information Processing & Management, ISSN 0306-4573, E-ISSN 1873-5371, Vol. 44, no 1, p. 212-225Article in journal (Refereed)
  • 132.
    Ahlgren, Per
    et al.
    University College of Borås.
    Grönqvist, Leif
    Measuring retrieval effectiveness with incomplete relevance data2006In: Current research in information sciences and technologies: multidisciplinary approaches to global information systems, 2006, p. 74-78Conference paper (Refereed)
  • 133.
    Ahlgren, Per
    et al.
    University College of Borås.
    Grönqvist, Leif
    Retrieval evaluation with incomplete relevance data: a comparative study of three measures2006In: Proceedings of the 15th ACM International Conference on Information and Knowledge Management, 2006, p. 872-873Conference paper (Refereed)
  • 134.
    Ahlgren, Per
    et al.
    Stockholm University.
    Hinders, Johan
    Lindelöw, Camilla
    Parmhed, Sara
    Swedberg, Per
    Research collaboration between Stockholm University and other Swedish academic institutions: a bibliometric study to support decisions on library collaboration2015In: Qualitative and Quantitative Methods in Libraries, E-ISSN 2241-1925, Vol. 4, p. 49-60Article in journal (Other academic)
    Abstract [en]

    Academic libraries collaborate in several ways. For instance, collaboration can concern standards for indexing and statistics, technical solutions or collection development. A question that a given academic library might ask is with which other academic libraries the library should principally collaborate. In this study, we show how bibliometric methods can be used to generate information that can support decision making with regard to the question at stake. We evaluate the amount of research collaboration between Stockholm University and other Swedish academic institutions across five publishing years, and for the whole considered time period, where research collaboration is operationalized as co-publishing. A dataset of publications obtained from Web of Science, where each publication has at least one Stockholm University address, is used in the study. Co-publishing rates, non-fractionalized and fractionalized, across the publishing years and for the whole for period, for Stockholm University and other Swedish academic institutions, are reported. Further, parts of the outcome of the study are visualized in terms of co-publishing networks.

  • 135.
    Ahlgren, Per
    et al.
    Stockholm University.
    Jarneving, Bo
    Bibliographic coupling, common abstract stems and clustering: a comparison of two document-document similarity approaches in the context of science mapping2008In: Scientometrics, ISSN 0138-9130, E-ISSN 1588-2861, Vol. 76, no 2, p. 273-290Article in journal (Refereed)
  • 136.
    Ahlgren, Per
    et al.
    University College of Borås.
    Jarneving, Bo
    Rousseau, Ronald
    Author cocitation analysis and Pearson's r2004In: Journal of The American Society For Information Science And Technology, ISSN 1532-2882, E-ISSN 1532-2890, Vol. 55, no 9, p. 843-843Article in journal (Refereed)
  • 137.
    Ahlgren, Per
    et al.
    University College of Borås.
    Jarneving, Bo
    Rousseau, Ronald
    Rejoinder: In defense of formal methods2004In: Journal of The American Society For Information Science And Technology, ISSN 1532-2882, E-ISSN 1532-2890, Vol. 55, no 10, p. 936-936Article in journal (Refereed)
  • 138.
    Ahlgren, Per
    et al.
    University College of Borås.
    Jarneving, Bo
    Rousseau, Ronald
    Requirements for a cocitation similarity measure, with special reference to Pearson's correlation coefficient2003In: Journal of The American Society For Information Science And Technology, ISSN 1532-2882, E-ISSN 1532-2890, Vol. 54, no 6, p. 550-560Article in journal (Refereed)
    Abstract [en]

    Author cocitation analysis (ACA), a special type of cocitation analysis, was introduced by White and Griffith in 1981. This technique is used to analyze the intellectual structure of a given scientific field. In 1990, McCain published a technical overview that has been largely adopted as a standard. Here, McCain notes that Pearson's correlation coefficient (Pearson's r) is often used as a similarity measure in ACA and presents some advantages of its use. The present article criticizes the use of Pearson's r in ACA and sets forth two natural requirements that a similarity measure applied in ACA should satisfy. It is shown that Pearson's r does not satisfy these requirements. Real and hypothetical data are used in order to obtain counterexamples to both requirements. It is concluded that Pearson's r is probably not an optimal choice of a similarity measure in ACA. Still, further empirical research is needed to show if, and in that case to what extent, the use of similarity measures in ACA that fulfill these requirements would lead to objectively better results in full-scale studies. Further, problems related to incomplete cocitation matrices are discussed.

  • 139.
    Ahlgren, Per
    et al.
    Uppsala universitet, Statistiska institutionen.
    Jeppsson, Tobias
    KTH, Library, Bibliometrics.
    Stenberg, Esa
    Uppsala universitet, Områdeskanslier.
    Berg, Erik
    Uppsala universitet, Strukturkemi.
    Edström, Kristina
    Uppsala universitet, Strukturkemi.
    A bibliometric analysis of battery research with the BATTERY 2030+ roadmap as point of departure2022Report (Other academic)
    Abstract [en]

    In this bibliometric study, we analyze the six battery research subfields identified in the BATTERY 2030+ roadmap: Battery Interface Genome, Materials Acceleration Platform, Recyclability, Smart functionalities: Self-healing, Smart functionalities: Sensing, and Manufacturability. In addition, we analyze the entire research field related to BATTERY 2030+ as a whole, using two operationalizations. We (a) evaluate the European standing in the subfields/the BATTERY 2030+ field in comparison to the rest of the world, and (b) identify strongholds of the subfields/the BATTERY 2030+ field across Europe. For each subfield and the field as a whole, we used seed articles, i.e. articles listed in the BATTERY 2030+ roadmap or cited by such articles, in order to generate additional, similar articles located in an algorithmically obtained classification system. The output of the analysis is publication volumes, field normalized citation impact values with comparisons between country/country aggregates and between organizations, co-publishing networks between countries and organizations, and keyword co-occurrence networks. For the results related to (a), the performance of EU & associated (countries) is similar to China and the aggregate Japan-South Korea-Singapore and well below North America regarding citation impact and with respect to the field as a whole. Exceptions are, however, the subfields Battery Interface Genome and Recyclability. For the results related to (b), there is a large variability in the EU & associated organizations regarding volume in the different subfields. For citation impact, examples of high-performing EU & associated organizations are ETH Zurich and Max Planck Society for the Advancement of Science.

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  • 140.
    Ahlgren, Per
    et al.
    Uppsala Universitet.
    Jeppsson, Tobias
    KTH, Library, Bibliometrics.
    Stenberg, Esa
    Uppsala Universitet.
    Berg, Erik
    Uppsala Universitet.
    Edström, Kristina
    Uppsala Universitet.
    BATTERY 2030+ and its Research Roadmap: A Bibliometric Analysis.2023In: ChemSusChem, ISSN 1864-5631, E-ISSN 1864-564X, Vol. 16, no 21, article id e202300333Article in journal (Refereed)
    Abstract [en]

    In this bibliometric study, we analyze two of the six battery research subfields identified in the BATTERY 2030+ roadmap: Materials Acceleration Platform and Smart functionalities: Sensing. In addition, we analyze the entire research field related to BATTERY 2030+ as a whole. We (a) evaluate the European standing in the two subfields/the BATTERY 2030+ field in comparison to the rest of the world, and (b) identify strongholds of the two subfields/the BATTERY 2030+ field across Europe. For each subfield and the field as a whole, we used seed articles, i. e. articles listed in the BATTERY 2030+ roadmap or cited by such articles, in order to generate additional, similar articles located in an algorithmically obtained classification system. The output of the analysis is publication volumes, field normalized citation impact values with comparisons between country/country aggregates and between organizations, co-publishing networks between countries and organizations, and keyword co-occurrence networks.

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    fulltext
  • 141.
    Ahlgren, Per
    et al.
    Stockholm University, Sweden.
    Järvelin, Kalervo
    Measuring impact of twelve information scientists using the DCI index2010In: Journal of The American Society For Information Science And Technology, ISSN 1532-2882, E-ISSN 1532-2890, Vol. 61, no 7, p. 1424-1439Article in journal (Refereed)
    Abstract [en]

    The Discounted Cumulated Impact (DCI) index has recently been proposed for research evaluation. In the present work an earlier dataset by Cronin and Meho (2007) is reanalyzed, with the aim of exemplifying the salient features of the DCI index. We apply the index on, and compare our results to, the outcomes of the Cronin-Meho (2007) study. Both authors and their top publications are used as units of analysis, which suggests that, by adjusting the parameters of evaluation according to the needs of research evaluation, the DCI index delivers data on an author's (or publication's) "lifetime" impact or current impact at the time of evaluation on an author's (or publication's) capability of inviting citations from highly cited later publications as an indication of impact, and on the relative impact across a set of authors (or publications) over their "lifetime" or currently.

  • 142.
    Ahlgren, Per
    et al.
    University College of Borås.
    Kekälainen, Jaana
    Indexing strategies for Swedish full text retrieval under different user scenarios2007In: Information Processing & Management, ISSN 0306-4573, E-ISSN 1873-5371, Vol. 43, no 1, p. 81-102Article in journal (Refereed)
    Abstract [en]

    This paper deals with Swedish full text retrieval and the problem of morphological variation of query terms in the document database. The effects of combination of indexing strategies with query terms on retrieval effectiveness were studied. Three of five tested combinations involved indexing strategies that used conflation, in the form of normalization. Further, two of these three combinations used indexing strategies that employed compound splitting. Normalization and compound splitting were performed by SWETWOL, a morphological analyzer for the Swedish language. A fourth combination attempted to group related terms by right hand truncation of query terms. The four combinations were compared to each other and to a baseline combination, where no attempt was made to counteract the problem of morphological variation of query terms in the document database. The five combinations were evaluated under six different user scenarios, where each scenario simulated a certain user type. The four alternative combinations outperformed the baseline, for each user scenario. The truncation combination had the best performance under each user scenario. The main conclusion of the paper is that normalization and right hand truncation (performed by a search expert) enhanced retrieval effectiveness in comparison to the baseline. The performance of the three combinations of indexing strategies with query terms based on normalization was not far below the performance of the truncation combination. (c) 2006 Elsevier Ltd. All rights reserved.

  • 143.
    Ahlgren, Per
    et al.
    University College of Borås.
    Kekälainen, Jaana
    Swedish full text retrieval: Effectiveness of different combinations of indexing strategies with query terms2006In: Information retrieval (Boston), ISSN 1386-4564, E-ISSN 1573-7659, Vol. 9, no 6, p. 681-697Article in journal (Refereed)
    Abstract [en]

    In this paper, which treats Swedish full text retrieval, the problem of morphological variation of query terms in the document database is studied. The Swedish CLEF 2003 test collection was used, and the effects of combination of indexing strategies with query terms on retrieval effectiveness were studied. Four of the seven tested combinations involved indexing strategies that used normalization, a form of conflation. All of these four combinations employed compound splitting, both during indexing and at query phase. SWETWOL, a morphological analyzer for the Swedish language, was used for normalization and compound splitting. A fifth combination used stemming, while a sixth attempted to group related terms by right hand truncation of query terms. The truncation was performed by a search expert. These six combinations were compared to each other and to a baseline combination, where no attempt was made to counteract the problem of morphological variation of query terms in the document database. Both the truncation combination, the four combinations based on normalization and the stemming combination outperformed the baseline. Truncation had the best performance. The main conclusion of the paper is that truncation, normalization and stemming enhanced retrieval effectiveness in comparison to the baseline. Further, normalization and stemming were not far below truncation.

  • 144.
    Ahlgren, Per
    et al.
    KTH, School of Education and Communication in Engineering Science (ECE), Department for Library services, Language and ARC, Publication Infrastructure.
    Pagin, Peter
    Persson, Olle
    Svedberg, Maria
    Bibliometric analysis of two subdomains in philosophy: free will and sorites2015In: Scientometrics, ISSN 0138-9130, Vol. 103, no 1, p. 47-73Article in journal (Refereed)
    Abstract [en]

    In this study we tested the fruitfulness of advanced bibliometric methods for mapping subdomains in philosophy. The development of the number of publications on free will and sorites, the two subdomains treated in the study, over time was studied. We applied the cocitation approach to map the most cited publications, authors and journals, and we mapped frequently occurring terms, using a term co-occurrence approach. Both subdomains show a strong increase of publications in Web of Science. When we decomposed the publications by faculty, we could see an increase of free will publications also in social sciences, medicine and natural sciences. The multidisciplinary character of free will research was reflected in the cocitation analysis and in the term co-occurrence analysis: we found clusters/groups of cocited publications, authors and journals, and of co-occurring terms, representing philosophy as well as non-philosophical fields, such as neuroscience and physics. The corresponding analyses of sorites publications displayed a structure consisting of research themes rather than fields. All in all, both philosophers involved in this study acknowledge the validity of the various networks presented. Bibliometric mapping appears to provide an interesting tool for describing the cognitive orientation of a research field, not only in the natural and life sciences but also in philosophy, which this study shows.

  • 145.
    Ahlgren, Per
    et al.
    Stockholm University.
    Persson, Olle
    Globalization of citations and collaboration: A study of twelve journals2012In: Proceedings of the 17th International Conference on Science and Technology Indicators, 2012, Vol. 1, p. 23-32Conference paper (Refereed)
  • 146.
    Ahlgren, Per
    et al.
    KTH, School of Education and Communication in Engineering Science (ECE), Department for Library services, Language and ARC, Publication Infrastructure.
    Persson, Olle
    Rousseau, Ronald
    An approach for efficient online identification of the top-k percent most cited documents in large sets of Web of Science documents2014In: ISSI Newsletter, ISSN 1998-5460, Vol. 10, no 4, p. 81-89Article in journal (Other academic)
  • 147.
    Ahlgren, Per
    et al.
    Stockholm University.
    Persson, Olle
    Tijssen, Robert
    Geographical distance in bibliometric relations within epistemic communities2013In: Scientometrics, ISSN 0138-9130, E-ISSN 1588-2861, Vol. 95, no 2, p. 771-784Article in journal (Refereed)
  • 148.
    Ahlgren, Per
    et al.
    KTH, School of Education and Communication in Engineering Science (ECE), Department for Library services, Language and ARC, Publication Infrastructure.
    Sjögårde, Peter
    KTH, School of Education and Communication in Engineering Science (ECE), Department for Library services, Language and ARC, Publication Infrastructure.
    Formal definitions of field normalized citation indicators and their implementation at KTH Royal Institute of Technology2015Report (Other academic)
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    Formal definitions of field normalized citation indicators at KTH
  • 149.
    Ahlgren, Per
    et al.
    Stockholm University.
    Waltman, Ludo
    The correlation between citation-based and expert-based assessments of publication channels: SNIP and SJR vs. Norwegian quality assessments2014In: Journal of Informetrics, ISSN 1751-1577, E-ISSN 1875-5879, Vol. 8, no 4, p. 985-996Article in journal (Refereed)
    Abstract [en]

    We study the correlation between citation-based and expert-based assessments of journals and series, which we collectively refer to as sources. The source normalized impact per paper (SNIP), the Scimago Journal Rank 2 (SJR2) and the raw impact per paper (RIP) indicators are used to assess sources based on their citations, while the Norwegian model is used to obtain expert-based source assessments. We first analyze – within different subject area categories and across such categories – the degree to which RIP, SNIP and SJR2 values correlate with the quality levels in the Norwegian model. We find that sources at higher quality levels on average have substantially higher RIP, SNIP, and SJR2 values. Regarding subject area categories, SNIP seems to perform substantially better than SJR2 from the field normalization point of view. We then compare the ability of RIP, SNIP and SJR2 to predict whether a source is classified at the highest quality level in the Norwegian model or not. SNIP and SJR2 turn out to give more accurate predictions than RIP, which provides evidence that normalizing for differences in citation practices between scientific fields indeed improves the accuracy of citation indicators.

  • 150.
    Ahlgren, Per
    et al.
    KTH, School of Education and Communication in Engineering Science (ECE), Department for Library services, Language and ARC, Publication Infrastructure.
    Yue, Ting
    Rousseau, Ronald
    Yang, Liying
    The role of the Chinese Key Labs in the international and national scientific arena revisited2017In: Research Evaluation, ISSN 0958-2029, E-ISSN 1471-5449, Vol. 26, no 2, p. 132-143Article in journal (Refereed)
    Abstract [en]

    In this contribution, which builds on and develops a study that was published more than 10 years ago, we address the role of the Chinese Key Labs (KLs) in the international and national scientific arena. We give a short overview of the position of KLs in China, including their budget and manpower. Based on large numbers of Chinese publications obtained from the Web of Science (WoS) and the Chinese Science Citation Database (CSCD), the KLs are compared across publication years to the rest of China (ChRest) with respect to publication output and citation impact. We also look at collaboration in terms of co-publishing between the KLs and the ChRest. As to publications in the WoS, we found that the contribution of KLs compared with the ChRest is slightly and irregularly increasing (using full counting as well as fractional counting), whereas a stronger increasing trend is observed for the corresponding contribution in the CSCD. We observed an increase in the number of collaborations between KLs and Chinese colleagues, regardless of database. For WoS and field normalized citation indicators, we obtained the expected results that researchers at KLs perform considerably better than other Chinese colleagues and, moreover, perform clearly better than database average. As such we may conclude that KLs have lived up to their promise and made real impact on the international arena.

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