Opin vísindi
Opin vísindi er varðveislusafn vísindaefnis og doktorsritgerða í opnum aðgangi á vegum íslenskra háskóla og Landsbókasafns Íslands - Háskólabókasafns.
Opinn aðgangur að rannsóknaniðurstöðum er í samræmi við 10. gr. laga nr. 3/2003 um opinberan stuðning við vísindarannsóknir sem og kröfur innlendra og erlendra rannsóknasjóða. Markmiðið með opnum aðgangi er að niðurstöður rannsókna séu aðgengilegar sem flestum óhindrað og án endurgjalds á rafrænu formi. Vistun í varðveislusafninu er varanleg og ætlað að tryggja aðgang að vísindaefni íslenskra háskóla í opnum aðgangi um ókomna tíð. Varðveislusafnið Opin vísindi er tengt við rannsóknagáttina IRIS og rannsóknaniðurstöður í opnum aðgangi sem eru skráðar í IRIS eru um leið vistaðar og gerðar aðgengilegar til framtíðar í varðveislusafninu. Með því að safna þessu efni saman í eitt safn verður aðgangur að því einfaldur og þægilegur fyrir alla sem vilja kynna sér það og geta þannig notið þess öfluga vísindastarfs sem fram fer í háskólum landsins.
Varðveislusafnið er OpenAIRE / OpenAIREplus samhæft og samrýmist kröfum sem gerðar eru um birtingu rannsóknaniðurstaðna úr verkefnum sem styrkt eru úr evrópsku rannsóknaáætlununum FP7 og H2020.
Varðveislusafnið notar opna hugbúnaðinn DSpace.
Opinn aðgangur að rannsóknaniðurstöðum er í samræmi við 10. gr. laga nr. 3/2003 um opinberan stuðning við vísindarannsóknir sem og kröfur innlendra og erlendra rannsóknasjóða. Markmiðið með opnum aðgangi er að niðurstöður rannsókna séu aðgengilegar sem flestum óhindrað og án endurgjalds á rafrænu formi. Vistun í varðveislusafninu er varanleg og ætlað að tryggja aðgang að vísindaefni íslenskra háskóla í opnum aðgangi um ókomna tíð. Varðveislusafnið Opin vísindi er tengt við rannsóknagáttina IRIS og rannsóknaniðurstöður í opnum aðgangi sem eru skráðar í IRIS eru um leið vistaðar og gerðar aðgengilegar til framtíðar í varðveislusafninu. Með því að safna þessu efni saman í eitt safn verður aðgangur að því einfaldur og þægilegur fyrir alla sem vilja kynna sér það og geta þannig notið þess öfluga vísindastarfs sem fram fer í háskólum landsins.
Varðveislusafnið er OpenAIRE / OpenAIREplus samhæft og samrýmist kröfum sem gerðar eru um birtingu rannsóknaniðurstaðna úr verkefnum sem styrkt eru úr evrópsku rannsóknaáætlununum FP7 og H2020.
Varðveislusafnið notar opna hugbúnaðinn DSpace.
Nýlega bætt við
Association between physical activity over a 10-year period and current insomnia symptoms, sleep duration and daytime sleepiness : a European population-based study
(2024-03-26) Bjornsdottir, Erla; Thorarinsdottir, Elin Helga; Lindberg, Eva; Benediktsdottir, Bryndis; Franklin, Karl; Jarvis, Debbie; Demoly, Pascal; Perret, Jennifer L.; Aymerich, Judith Garcia; Dorado-Arenas, Sandra; Heinrich, Joachim; Torén, Kjell; Larsen, Vanessa Garcia; Jögi, Rain; Gislason, Thorarinn; Janson, Christer
Objectives To explore the relationship between physical activity over a 10-year period and current symptoms of insomnia, daytime sleepiness and estimated sleep duration in adults aged 39–67. Design Population-based, multicentre cohort study. Setting 21 centres in nine European countries. Methods Included were 4339 participants in the third followup to the European Community Respiratory Health Survey (ECRHS III), who answered questions on physical activity at baseline (ECRHS II) and questions on physical activity, insomnia symptoms, sleep duration and daytime sleepiness at 10-year follow-up (ECRHS III). Participants who reported that they exercised with a frequency of at least two or more times a week, for 1 hour/week or more, were classified as being physically active. Changes in activity status were categorised into four groups: persistently non-active; became inactive; became active; and persistently active. Main outcome measures Insomnia, sleep time and daytime sleepiness in relation to physical activity. Results Altogether, 37% of participants were persistently non-active, 25% were persistently active, 20% became inactive and 18% became active from baseline to follow-up. Participants who were persistently active were less likely to report difficulties initiating sleep (OR 0.60, 95% CI 0.45–0.78), a short sleep duration of ≤6 hours/night (OR 0.71, 95% CI 0.59–0.85) and a long sleep of ≥9 hours/night (OR 0.53, 95% CI 0.33–0.84) than persistently non-active subjects after adjusting for age, sex, body mass index, smoking history and study centre. Daytime sleepiness and difficulties maintaining sleep were not related to physical activity status. Conclusion Physically active people have a lower risk of some insomnia symptoms and extreme sleep durations, both long and short.
Reproducibility in Management Science
(2024-03-01) the Management Science Reproducibility Collaboration; Department of Business and Economics
With the help of more than 700 reviewers, we assess the reproducibility of nearly 500 articles published in the journal Management Science before and after the introduction of a new Data and Code Disclosure policy in 2019. When considering only articles for which data accessibility and hardware and software requirements were not an obstacle for reviewers, the results of more than 95% of articles under the new disclosure policy could be fully or largely computationally reproduced. However, for 29% of articles, at least part of the data set was not accessible to the reviewer. Considering all articles in our sample reduces the share of reproduced articles to 68%. These figures represent a significant increase compared with the period before the introduction of the disclosure policy, where only 12% of articles voluntarily provided replication materials, of which 55% could be (largely) reproduced. Substantial heterogeneity in reproducibility rates across different fields is mainly driven by differences in data set accessibility. Other reasons for unsuccessful reproduction attempts include missing code, unresolvable code errors, weak or missing documentation, and software and hardware requirements and code complexity. Our findings highlight the importance of journal code and data disclosure policies and suggest potential avenues for enhancing their effectiveness.
Social validation, reciprocation, and sustainable orientation : Cultivating “clean” codes of conduct through social influence
(2024-01) Otterbring, Tobias; Folwarczny, Michał; Department of Business and Economics
The current research examined the effectiveness of two social influence strategies—reciprocity and social validation—in promoting sustainable consumer behavior. In an initial behavioral field experiment (Study 1), consumers were either exposed to a reciprocity, social validation, or control message distributed in the changing rooms of a sporting goods store. The daily number of cleanups carried out by store employees were then monitored as a function of message type. Results revealed that messages based on reciprocity and social validation led to a significant reduction in the number of cleanups compared to the control message, with no significant difference between the reciprocity and social validation conditions. In a follow-up online experiment with increased rigor and control (Study 2), participants were randomly assigned to a reciprocity, social validation, or control condition and subsequently indicated their willingness to shop sustainably. Consistent with the findings from Study 1, both the reciprocity and social validation conditions outperformed the control condition regarding participants’ willingness to engage in sustainable consumer behavior, with no significant difference between the reciprocity and social validation conditions. Together, this research suggests that the strategic use of reciprocity or social validation messages can help store managers reduce the environmental impact of consumers’ shopping responses, while simultaneously decreasing operating costs.
Factors Influencing Fashion Consciousness in Muslim Fashion Consumption among Zillennials
(2024-01) Ocktavia, Annisa Kartika; Marenza, Silvya Eka; Al-Ayubi, Solahuddin; Maulana, Huda Kurnia; Department of Business and Economics
This study aims to analyze the factors that influence awareness of Muslim fashion consumption among Generation Z in Indonesia. Data is collected using a questionnaire using the convenience sampling method. A total of 255 final data points can be used for data analysis using SmartPLS. The results show that the style of dressing, the motivation for fashion, the uniqueness of fashion, and the source of fashion knowledge positively influence fashion awareness and indirectly influence Muslim fashion consumption. The findings from this study provide valuable insights to stakeholders in the fashion industry, including designers, retailers, and entrepreneurs, in understanding Muslim market segments. Practitioners can develop Muslim fashion products that are sharia-friendly and effectively target Muslim consumer segments through appropriate marketing strategies.
Threads of Complexity : Lessons learnt from Predicting Student Failure through Discussion Forums’ Social-Temporal Dynamics
(International Educational Data Mining Society, 2024) Flores, Nidia G.López; Uc-Cetina, Víctor; Islind, Anna Sigridur; Óskarsdóttir, María; Demmans Epp, Carrie; Paaßen, Benjamin; Joyner, David; Department of Computer Science
Identifying students-at-risk of failing a course or dropping out of a program is a significant problem in the fields of Learning Analytics and Educational Data Mining. Improving their early detection is important for enabling higher education institutions to design and provide resources to better support students. In addition, learning is a dynamic process, where social interactions are crucial as learning is not completely an individual or static achievement. The identification of students-at-risk of failing or dropping out a course is generally an imbalanced problem, as grade distribution is affected by several elements, and failing students are not always fairly represented. This research focuses on exploring the extent to which network structure in online discussion forum interactions can inform student-at-risk predictions through node oversampling.
Flokkar í Opnum vísindum
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- University of Iceland
- University of Akureyri
- Bifröst University
- Hólar University College
- IRIS
- Agricultural University of Iceland
- National and University Library of Iceland
- Iceland University of the Arts