# Publicaties

De onderstaande lijst van publicaties is op omgekeerde chronologische volgorde en gescheiden per jaar.

Legenda:

**[link]**: een link naar de website van de uitgever van de publicatie

**[PDF]**: een PDF van de publicatie

**[preprint]**: een PDF van de preprint van het artikel

Verder kan door op deze knop te drukken de abstract van de publicatie op de pagina worden getoond:

### 2019

Bossema, F.G., Burger, P., Bratton, L., Challenger, A., Adams, R.C., Sumner, P., Schat, J., Numans, M.E., Smeets, I. (2019). Expert quotes and exaggeration in health news: a retrospective quantitative content analysis. [version 1; peer review: 1 approved with reservations]. *Wellcome Open Res 4*, 56. doi: 10.12688/wellcomeopenres.15147.1

[link] [preprint]

##### Background

This research is an investigation into the role of expert quotes in health news, specifically whether news articles containing a quote from an independent expert are less often exaggerated than articles without such a quote.

##### Methods

Retrospective quantitative content analysis of journal articles, press releases, and associated news articles was performed. The investigated sample are press releases on peer-reviewed health research and the associated research articles and news stories. Our sample consisted of 462 press releases and 668 news articles from the UK (2011) and 129 press releases and 185 news articles from The Netherlands (2015). We hand-coded all journal articles, press releases and news articles for correlational claims, using a well-tested codebook. The main outcome measures are types of sources that were quoted and exaggeration of correlational claims. We used counts, 2×2 tables and odds ratios to assess the relationship between presence of quotes and exaggeration of the causal claim.

##### Results

Overall, 99.1% of the UK press releases and 84.5% of the Dutch press releases contain at least one quote. For the associated news articles these percentages are: 88.6% in the UK and 69.7% in the Netherlands. Authors of the study are most often quoted and only 7.5% of UK and 7.0% of Dutch news articles contained a new quote by an expert source, i.e. one not provided by the press release. The relative odds that an article without an external expert quote contains an exaggeration of causality is 2.6.

##### Conclusions

The number of articles containing a quote from an independent expert is low, but articles that cite an external expert do contain less exaggeration.

Willems, S.J.W., Albers, C.J., Smeets, I. (2019). Variability in the interpretation of Dutch probability phrases – a risk for miscommunication. *arXiv preprint arXiv:1901.09686*.

[preprint]

The responses from 881 participants showed a large variability in the interpretation of Dutch phrases, and the neutral contexts seemed to have no structural influence. Furthermore, the results demonstrated an asymmetry in the interpretation of Dutch complementary phrases. The large variability of interpretations was found among both statisticians and non-statisticians, and among males and females, however, no structural differences were found between the groups.

Concluding, there is a large variability in the interpretation of verbal probability phrases, even within sub-populations. Therefore, verbal probability expressions may be a risk for miscommunication.

Venhuizen, G. J., Hut, R., Albers, C., Stoof, C. R., & Smeets, I. (2019). Flooded by jargon: How the interpretation of water-related terms differs between hydrology experts and the general audience. *Hydrology and Earth System Sciences Discussions, 23*(1), 393-403. doi:10.5194/hess-2018-297

[link] [PDF]

In this study, we compare the expert and layperson definitions of 22 common terms and pictures related to water and water hazards, to see where misunderstandings might arise both in text and pictures. Our primary objective is to analyze the degree of agreement between experts and laypeople in their definition of the used terms. In this way, we hope to contribute to improving the communication between these groups in the future. Our study was based on a survey completed by 34 experts and 119 laypeople.

Especially concerning the definition of words related to water there are some profound differences between experts and laypeople: words like “river” and “river basin” turn out to have a thoroughly different interpretation between the two groups. Concerning the pictures, there is much more agreement between the groups.

Vries, M. D., Land-Zandstra, A., & Smeets, I. (2019). Citizen Scientists’ Preferences for Communication of Scientific Output: A Literature Review. *Citizen Science: Theory and Practice, 4*2. doi:10.5334/cstp.136

[link] [PDF]

From this review, we conclude that participants value accessibility of their collected data, communication of project findings, and acknowledgement in publications. Taking this into account can pay off, as sharing data and findings can enhance the motivation of participants to engage in the project, thereby sustaining their participation, imparting the feeling that they spent their time well, and increasing a project’s learning impact. Some practical and ethical issues such as privacy concerns, however, need to be taken into account. This literature review is the first to provide an overview of citizen scientists’ preferences for communication of scientific output, and is a starting point for further research that should investigate the impact of different options for data sharing and communication of findings to participants.

### 2018

Smeets, I. (2018). What Do People Like about Mathematics? *Adults Learning Mathematics: An International Journal, 13*, 7.

[link] [PDF]

settings.

Schat, J., Bossema, F.G., Numans, M.E., Smeets, I., Burger, J.P. (2018). Overdreven gezondheidsnieuws. Relatie tussen overdrijving in academische persberichten en in nieuwsmedia. *Nederlands Tijdschrift voor Geneeskunde, 162*, 5.

[link] [PDF]

##### Doel

Bepalen hoe vaak pers- en nieuwsberichten overdrijvingen bevatten en onderzoeken waar in het traject tussen wetenschappelijke publicatie en nieuwsbericht deze overdrijving ontstaat.

##### Opzet

Retrospectieve kwantitatieve inhoudsanalyse.

##### Methode

We analyseerden persberichten over gezondheidsonderzoek die door de Nederlandse universiteiten en universitaire medische centra in 2015 waren uitgebracht (n = 129) en de aan die persberichten gerelateerde berichten in de nieuwsmedia (n = 185).

##### Resultaten

20% van de persberichten en 29% van de nieuwsberichten bevatten overdrijving van de conclusie of causale claim. Expliciet gezondheidsadvies werd indien aanwezig overdreven in 7% van de persberichten en in 10% van de nieuwsberichten. Wanneer het persbericht een overdrijving van de conclusie of causale claim bevatte, stond in 92% van de gerelateerde nieuwsberichten dezelfde overdrijving. Als de conclusie in het persbericht niet overdreven was, was 6% van de nieuwsberichten overdreven. De relatieve kans op overdreven nieuws bij een overdreven persbericht was 16,08 (95%-BI: 7,35-35,18). Bij overdreven persberichten hoorde vaker een nieuwsbericht. De relatieve kans op een nieuwsbericht bij een overdreven persbericht tegenover een niet-overdreven persbericht was 1,45 (95%-BI: 1,02-2,04).

##### Conclusie

Overdrijving in gezondheidsnieuws gaat sterk gepaard met overdrijving in het oorspronkelijke persbericht en komt voor bij meer dan 1 op de 5 artikelen. Het monitoren en zo nodig verbeteren van de nauwkeurigheid en juistheid van academische persberichten lijken een belangrijke stap om de kwaliteit van gezondheidsnieuws te verhogen.

### 2017

Smeets, I. (2017). Gelijk hebben én krijgen. *Vakmedianet*.

[link] [PDF]

### 2016

Hut, R. Land-Zandstra, A.M., Smeets, I., Stoof, C.R. (2016). Geoscience on television: a review of science communication literature in the context of geosciences. *Hydrology and Earth System Sciences, 20*(6), 2507-2518. doi:10.5194/hess-20-2507-2016

[link] [PDF]

### 2013

Bosma, W., & Smeets, I. (2013). Finding simultaneous Diophantine approximations with prescribed quality. *The Open Book Series, 1*(1), 167-185. doi:10.2140/obs.2013.1.167

[link] [PDF]

### 2011

Kraaikamp, C., & Smeets, I. (2011). Sharp bounds for symmetric and asymmetric diophantine approximation. *Chinese Annals of Mathematics, Series B, 32*(2), 303-320. doi: 10.1007/s11401-011-0629-4

[link] [PDF]

### 2010

Smeets, I. (2010).* On continued fraction algorithms* (Doctoral dissertation, Mathematical Institute, Faculty of Science, Leiden University).

[link] [PDF]

Kraaikamp, C., Schmidt, T. A., & Smeets, I. (2010). Natural extensions for α-Rosen continued fractions. *Journal of the Mathematical Society of Japan, 62*(2), 649-671. doi: 10.2969/jmsj/06220649

[link] [PDF]

### 2009

Kraaikamp, C., & Smeets, I. (2009). Approximation Results for alpha-Rosen Fractions. *arXiv preprint arXiv:0912.1749*.

[preprint]

Smeets, I., Lenstra, A., Lenstra, H., Lovász, L., & van Emde Boas, P. (2009). The History of the LLL-algorithm. In *The LLL Algorithm* (pp. 1-17). Springer, Berlin, Heidelberg. doi: 10.1007/978-3-642-02295-1_1

[link] [PDF]

– *A tale of two papers* – Peter van Emde Boas.

– *The early history of LLL* – Hendrik Lenstra.

– *The ellipsoid method and basis reduction* – László Lovász.

– *Polynomial factorization and lattices in the very early 1980s* – Arjen Lenstra.

This chapter is based on those talks, conversations with these four historic characters, the notes that Peter van Emde Boas and Arjen Lenstra wrote for the preproceedings, and many artifacts from the phenomenal archive of Van Emde Boas.

### 2007

Kraaikamp, C., Schmidt, T. A., & Smeets, I. (2007). Tong’s spectrum for Rosen continued fractions. *Journal de théorie des nombres de Bordeaux, 19*(3), 641-661. doi: 10.5802/jtnb.606

[link] [PDF]