Njål Foldnes

Professor i statistikk

Njål Foldnes

Kontakt

E-post: njal.foldnes@uis.no

Organisasjonsenhet

Fakultet for utdanningsvitenskap og humaniora

Nasjonalt senter for leseopplæring og leseforsking

Kort om meg

I am interested in multivariate methods used in social science research, mainly structural equation modeling, factor analysis and developing simulation methods for multivariate correlated data. 

My research involves proposing new methods for assessing model fit in SEM, critique of existing simulation methodologies and development of new ones. 

covsim package

Also, I have been working together with S Grønneberg on delineating the limits of ordinal SEM and proposing new estimators for ordinal data. 

Also, I lead a machine learning project aimed at early detection of struggling readers based on gameplay data from a literacy app for school starters. 

Gameplay machine learning project

 

Publikasjoner

Vitenskapelige publikasjoner

Sevic, Aleksandra; Foldnes, Njål; Brønnick, Kolbjørn Kallesten

(2024)

Measuring digital stress in Norway: translation and validation of the Digital Stressors Scale.

Frontiers in Psychology.

ISSN 1664-1078.

Volum 15.

DOI: 10.3389/fpsyg.2024.1297194

Wagner, Åse Kari H.; Støle, Hildegunn; Hoem, Toril Frafjord; Foldnes, Njål

(2024)

Tekstene i PIRLS 2021 : Hvor godt liker elevene tekstene, og hvordan presterer de på oppgavene?. I: Tid for lesing! Norske tiåringers leseforståelse i PIRLS 2021.

Universitetsforlaget.

ISBN 978-82-15-05324-0.

s.180-202.

DOI: 10.18261/9788215053257-24-10

Alves-Wold, Aline; Walgermo, Bente R.; Foldnes, Njål

(2024)

Assessing writing and spelling interest and self-beliefs: Does the type of pictorial support affect first and third graders’ responses?.

Assessing Writing: An International Journal.

ISSN 1075-2935.

Volum 60.

DOI: 10.1016/j.asw.2024.100833

Solheim, Oddny Judith; Foldnes, Njål; Walgermo, Bente Rigmor; Bjerke, Kari Kolbjørnsen; Birkedal, Inga Kjerstin; Uppstad, Per Henning; Lundetræ, Kjersti

(2024)

Closing the Gap: A Conceptual Replication of an Early Reading Intervention.

Journal of Research on Educational Effectiveness.

ISSN 1934-5747.

DOI: 10.1080/19345747.2024.2333734

Peterson, Jacqueline Michelle; Foldnes, Njål; Jensen, Maria Therese

(2024)

Relations between linguistic diversity, classroom social climate, and reading comprehension in Norwegian elementary classrooms.

Scandinavian Journal of Educational Research.

ISSN 0031-3831.

DOI: 10.1080/00313831.2024.2330937

Støle, Hildegunn; Mangen, Anne; Foldnes, Njål

(2024)

Leseprøve på papir og digitalt : Hva viser PIRLS 2021?. I: Tid for lesing! Norske tiåringers leseforståelse i PIRLS 2021.

Universitetsforlaget.

ISBN 978-82-15-05324-0.

s.203-223.

DOI: 10.18261/9788215053257-24-11

Walgermo, Bente R.; Foldnes, Njål; Uppstad, Per Henning; Bakken, Arild Michel; Lundetræ, Kjersti

(2024)

Development and deployment of an adaptive national elementary reading screening test.

Frontiers in Education.

ISSN 2504-284X.

Volum 9.

DOI: 10.3389/feduc.2024.1331777

Foldnes, Njål; Moss, Jonas; Grønneberg, Steffen

(2024)

Improved Goodness of Fit Procedures for Structural Equation Models.

Structural Equation Modeling.

ISSN 1070-5511.

s.1-13.

DOI: 10.1080/10705511.2024.2372028

Foldnes, Njål; Uppstad, Per Henning; Grønneberg, Steffen; Thomson, Jenny

(2024)

School Entry Detection of Struggling Readers using Gameplay Data and Machine Learning .

Frontiers in Education.

ISSN 2504-284X.

Volum 9.

DOI: 10.3389/feduc.2024.1487694

Bakken, Arild Michel; Gourvennec, Aslaug Fodstad; Walgermo, Bente Rigmor; Solheim, Oddny Judith; Foldnes, Njål; Uppstad, Per Henning

(2023)

Adaptvurder: Study Protocol for an Upcoming Adaptive Reading Test.

Nordic Journal of Literacy Research.

ISSN 2464-1596.

Volum 9.

s.59-72.

DOI: 10.23865/njlr.v9.2906

Solheim, Oddny Judith; Arntzen, Julie; Foldnes, Njål

(2023)

Norwegian classroom teachers’ and specialized “resource” teachers’ dyslexia knowledge.

Reading and writing.

ISSN 0922-4777.

DOI: 10.1007/s11145-023-10486-4

Grønneberg, Steffen; Foldnes, Njål; Marcoulides, Katerina

(2022)

covsim: An R Package for Simulating Non-Normal Data for Structural Equation Models Using Copulas.

Journal of Statistical Software.

ISSN 1548-7660.

Volum 102.

Hefte 3.

s.1-45.

DOI: 10.18637/jss.v102.i03

Grønneberg, Steffen; Foldnes, Njål

(2022)

Factor analyzing ordinal items requires substantive knowledge of response marginals.

Psychological methods.

ISSN 1082-989X.

DOI: 10.1037/met0000495

Gunnerud, Hilde Lowell; Foldnes, Njål; Melby-Lervåg, Monica

(2022)

Levels of skills and predictive patterns of reading comprehension in bilingual children with an early age of acquisition.

Reading and writing.

ISSN 0922-4777.

DOI: 10.1007/s11145-022-10286-2

Gourvennec, Aslaug Fodstad; Solheim, Oddny Judith; Foldnes, Njål; Uppstad, Per Henning; McTigue, Erin

(2022)

Shared responsibility between teachers predicts student achievement: A mixed methods study in Norwegian co-taught literacy classes.

Journal of educational change.

ISSN 1389-2843.

DOI: 10.1007/s10833-022-09472-4

Foldnes, Njål; Grønneberg, Steffen

(2021)

The sensitivity of structural equation modeling with ordinal data to underlying non-normality and observed distributional forms.

Psychological methods.

ISSN 1082-989X.

Volum 27.

Hefte 4.

s.541-567.

DOI: 10.1037/met0000385

Foldnes, Njål; Grønneberg, Steffen

(2021)

Non-normal Data Simulation using Piecewise Linear Transforms.

Structural Equation Modeling.

ISSN 1070-5511.

s.1-12.

DOI: 10.1080/10705511.2021.1949323

Billington, Mary Genevieve; Foldnes, Njål

(2021)

Exploring the association between occupational complexity and numeracy.

Large-scale Assessments in Education.

ISSN 2196-0739.

Volum 9.

DOI: 10.1186/s40536-021-00112-6

Thomson, Jennifer Marie; Foldnes, Njål; Uppstad, Per Henning; Njå, Morten Bergsten; Solheim, Oddny Judith; Lundetræ, Kjersti

(2020)

Can children's instructional gameplay activity be used as a predictive indicator of reading skills?.

Learning and Instruction.

ISSN 0959-4752.

Volum 68.

DOI: 10.1016/j.learninstruc.2020.101348

Grønneberg, Steffen; Moss, Jonas; Foldnes, Njål

(2020)

Partial identification of latent correlations with binary data.

Psychometrika.

ISSN 0033-3123.

Volum 85.

s.1028-1051.

DOI: 10.1007/s11336-020-09737-y

Foldnes, Njål; Marcoulides, George A.; Olsson, Ulf H.

(2019)

Examining the Performance of the Modified ADF Goodness-of-fit Test Statistic in Structural Equation Models.

Structural Equation Modeling.

ISSN 1070-5511.

DOI: 10.1080/10705511.2019.1586545

Grønneberg, Steffen; Foldnes, Njål

(2019)

A problem with discretizing Vale-Maurelli in simulation studies.

Psychometrika.

ISSN 0033-3123.

Volum 84.

Hefte 2.

s.554-561.

DOI: 10.1007/s11336-019-09663-8

Foldnes, Njål; Olsson, Ulf H.

(2019)

The choice of normal-theory weight matrix when computing robust standard errors in confirmatory factor analysis.

Structural Equation Modeling.

ISSN 1070-5511.

s.1-15.

DOI: 10.1080/10705511.2019.1600408

McTigue, Erin ; Solheim, Oddny Judith; Walgermo, Bente R.; Frijters, Jan; Foldnes, Njål

(2019)

How can we determine students' motivation for reading before formal instruction? Results from a self-beliefs and interest scale validation study.

Early Childhood Research Quarterly.

ISSN 0885-2006.

Volum 48.

s.122-133.

DOI: 10.1016/j.ecresq.2018.12.013

Marcoulides, Katerina; Foldnes, Njål; Grønneberg, Steffen

(2019)

Assessing Model Fit in Structural Equation Modeling Using Appropriate Test Statistics.

Structural Equation Modeling.

ISSN 1070-5511.

s.1-11.

DOI: 10.1080/10705511.2019.1647785

Foldnes, Njål; Grønneberg, Steffen

(2019)

On Identification and Non-normal Simulation in Ordinal Covariance and Item Response Models.

Psychometrika.

ISSN 0033-3123.

Volum 84.

Hefte 4.

s.1000-1017.

DOI: 10.1007/s11336-019-09688-z

Foldnes, Njål; Grønneberg, Steffen

(2019)

Pernicious Polychorics: The Impact and Detection of Underlying Non-normality.

Structural Equation Modeling.

ISSN 1070-5511.

DOI: 10.1080/10705511.2019.1673168

Walgermo, Bente R.; Foldnes, Njål; Uppstad, Per Henning; Solheim, Oddny Judith

(2018)

Developmental Dynamics of Early Reading Skill, Literacy Interest and Reader's Self-Concept Within the First Year of Formal Schooling.

Reading and writing.

ISSN 0922-4777.

Volum 31.

Hefte 6.

s.1379-1399.

DOI: 10.1007/s11145-018-9843-8

Grønneberg, Steffen; Foldnes, Njål

(2018)

Testing Model Fit by Bootstrap Selection.

Structural Equation Modeling.

ISSN 1070-5511.

DOI: 10.1080/10705511.2018.1503543

Grønneberg, Steffen; Foldnes, Njål

(2017)

Covariance Model Simulation Using Regular Vines.

Psychometrika.

ISSN 0033-3123.

Volum 82.

Hefte 4.

s.1035-1051.

DOI: 10.1007/s11336-017-9569-6

Foldnes, Njål

(2017)

The impact of class attendance on student learning in a flipped classroom.

Nordic Journal of Digital Literacy.

ISSN 1891-943X.

Volum 12.

Hefte 1-2.

s.8-18.

DOI: 10.18261/issn.1891-943x-2017-01-02-02

Foldnes, Njål; Grønneberg, Steffen

(2017)

The asymptotic covariance matrix and its use in simulation studies.

Structural Equation Modeling.

ISSN 1070-5511.

Volum 24.

Hefte 6.

s.881-896.

DOI: 10.1080/10705511.2017.1341320

Foldnes, Njål; Grønneberg, Steffen

(2017)

Approximating Test Statistics Using Eigenvalue Block Averaging.

Structural Equation Modeling.

ISSN 1070-5511.

Volum 25.

Hefte 1.

s.101-114.

DOI: 10.1080/10705511.2017.1373021

Steen-Utheim, Anna Therese; Foldnes, Njål

(2017)

A qualitative investigation of student engagement in a flipped classroom.

Teaching in Higher Education.

ISSN 1356-2517.

Volum 23.

Hefte 3.

s.307-324.

DOI: 10.1080/13562517.2017.1379481

Strand, Olaug; Wagner, Åse Kari H.; Foldnes, Njål

(2017)

Flerspråklige elevers leseresultater. I: Klar framgang! Leseferdighet på 4. og 5. trinn i et femtenårsperspektiv.

Universitetsforlaget.

ISBN 9788215030241.

s.75-95.

DOI: 10.18261/9788215030258-2017-5

Foldnes, Njål

(2016)

The flipped classroom and cooperative learning: Evidence from a randomised experiment.

Active Learning in Higher Education.

ISSN 1469-7874.

Volum 17.

Hefte 1.

s.39-49.

DOI: 10.1177/1469787415616726

Foldnes, Njål; Olsson, Ulf H.

(2016)

A simple simulation technique for non-normal data with pre-specified skewness, kurtosis and covariance matrix.

Multivariate Behavioral Research.

ISSN 0027-3171.

Volum 51.

Hefte 2-3.

s.207-219.

DOI: 10.1080/00273171.2015.1133274

Foldnes, Njål; Olsson, Ulf

(2015)

Correcting too much or too little? The performance of three chi-square corrections.

Multivariate Behavioral Research.

ISSN 0027-3171.

Volum 50.

Hefte 5.

s.533-543.

DOI: 10.1080/00273171.2015.1036964

Foldnes, Njål; Hagtvet, Knut Arne

(2014)

The Choice of Product Indicators in Latent Variable Interaction Models: Post Hoc Analyses.

Psychological methods.

ISSN 1082-989X.

Volum 19.

Hefte 3.

s.444-457.

DOI: 10.1037/a0035728

Foldnes, Njål; Grønneberg, Steffen

(2014)

How general is the Vale-Maurelli simulation approach?.

Psychometrika.

ISSN 0033-3123.

Volum 80.

Hefte 4.

s.1066-1083.

DOI: 10.1007/s11336-014-9414-0

Foldnes, Njål; Olsson, Ulf H.; Foss, Tron

(2012)

The effect of kurtosis on the power of two test statistics in covariance structure analysis.

British Journal of Mathematical & Statistical Psychology.

ISSN 0007-1102.

Volum 65.

Hefte 1.

s.1-18.

DOI: 10.1111/j.2044-8317.2010.02010.x

Foldnes, Njål; Foss, Tron; Olsson, Ulf H.

(2012)

Residuals and the Residual-Based Statistic for Testing Goodness of Fit of Structural Equation Models.

Journal of educational and behavioral statistics.

ISSN 1076-9986.

Volum 37.

Hefte 3.

s.367-386.

DOI: 10.3102/1076998611411920

Dahl, Geir; Foldnes, Njål

(2006)

LP based heuristics for the multiple knapsack problem with assignment restrictions.

Annals of Operations Research.

ISSN 0254-5330.

Volum 146.

Hefte 1.

s.91-104.

Dahl, Geir; Foldnes, Njål; Gouveia, Luis

(2004)

A note on hop-constrained walk polytopes.

Operations Research Letters.

ISSN 0167-6377.

Volum 32.

s.345-349.

Dahl, Geir; Foldnes, Njål

(2003)

Complete description of a class of knapsack polytopes.

Operations Research Letters.

ISSN 0167-6377.

Volum 31.

s.335-340.

Bøker og kapitler

Foldnes, Njål; Grønneberg, Steffen; Hermansen, Gudmund Horn; Wellen, Einar Christopher

(2024)

Statistikk og dataanalyse.

Cappelen Damm Akademisk.

ISBN 9788202780043.

Foldnes, Njål; Grønneberg, Steffen; Hermansen, Gudmund Horn

(2018)

Statistikk og Dataanalyse.

Cappelen Damm Akademisk.

ISBN 9788202512682.

Formidling

Foldnes, Njål; Dahl, Tobias Gulden

(2024)

Det er alvorlige feil og mangler i forskningen på sosiale medier.

Aftenposten (morgenutg. : trykt utg.).

ISSN 0804-3116.

Foldnes, Njål; Dahl, Tobias Gulden

(2024)

Har vi et kappløp mot bunnen?.

Dagens næringsliv.

ISSN 0803-9372.

Walgermo, Bente R.; Uppstad, Per Henning; Foldnes, Njål

(2024)

Kvalitetsrapport av gjennnomført kartleggingsprøve 2023, 3 klasse.

Kvalitetsrapport av gjennnomført kartleggingsprøve 2023, 3 klasse;

2024-06-11.

Støle, Hildegunn; Mangen, Anne; Foldnes, Njål

(2024)

Leseprøve på papir og digitalt. PIRLS 2021.

PIRLS-konferanse;

2024-04-12.

Uppstad, Per Henning; Walgermo, Bente R.; Foldnes, Njål

(2024)

School entry detection of reading difficulties using machine learning on gameplay process data.

FLIP+ 7th Annual event 2024;

2024-06-19 - 2024-06-21.

Alves-Wold, Aline; Walgermo, Bente R.; Foldnes, Njål

(2024)

Assessing writing motivation: The influence of pictorial supports on young students' responses.

Sig-Writing conference;

2024-06-26 - 2024-06-28.

Gunnerud, Hilde Lowell; Foldnes, Njål; Magyari, Lilla; Solheim, Oddny Judith

(2024)

Struggling reader or not? The answer depends on the reading test.

SSSR 2024;

2024-07-10 - 2024-07-17.

Gunnerud, Hilde Lowell; Foldnes, Njål; Magyari, Lilla; Solheim, Oddny Judith

(2024)

Struggling reader or not? The answer depends on the reading test.

Skriv! Les! 2024;

2024-05-07 - 2024-05-08.

Dahl, Tobias Gulden; Foldnes, Njål

(2023)

Full forvirring om barn og sosiale medier.

Aftenposten (morgenutg. : trykt utg.).

ISSN 0804-3116.

Arntzen, Julie; Solheim, Oddny Judith; Foldnes, Njål

(2023)

Are late-emerging reading problems truly late - or gradually emerging?.

EARLI 2023;

2023-08-22 - 2023-08-27.

Gourvennec, Aslaug Fodstad; Solheim, Oddny Judith; Foldnes, Njål; Uppstad, Per Henning; McTigue, Erin

(2023)

Shared responsibility between team teachers predicts student achievement - A Norwegian study.

EARLI 2023 Education as a hope in uncertain times;

2023-08-22 - 2023-08-26.

Walgermo, Bente R.; Nortvedt, Guri A.; Uppstad, Per Henning; Haram, Henrik; Bratting, Karianne Berg; Foldnes, Njål

(2023)

The Adaptive Models of ​ New National Screening Tests ​ in Reading and Numeracy ​ for Grade 1 and 3 in Norway ​​ ​- possibilities and limitations​​.

Annual Meeting of the Association for Educational Assessment – Europe (AEA-Europe);

2023-11-01 - 2023-11-04.

Walgermo, Bente R.; Uppstad, Per Henning; Foldnes, Njål

(2023)

RECIPROCAL INVESTIGATIONS OF INTEREST, SELF-EFFICACY AND SKILL WITHIN A READING TEST SITUATION .

Society for Scientific studies of reading - annual conference /SSSR) ;

2023-07-19 - 2023-07-22.

Støle, Hildegunn; Mangen, Anne; Foldnes, Njål

(2023)

PIRLS 2021: En utforsking av modalitetseffekt på flere nivå.

Lesesenterets onsdagspresentasjon;

2023-11-22.

Foldnes, Njål; Jensen, Maria Therese; Peterson, Jacqueline Michelle

(2023)

Relations between Cultural and Linguistic Diversity, Classroom Climate and Reading Comprehension in Norwegian Elementary Classrooms..

Foredrag;

2023-04-13 - .

Gourvennec, Aslaug Fodstad; Solheim, Oddny Judith; Foldnes, Njål; Uppstad, Per Henning; McTigue, Erin

(2022)

Shared responsibility between teachers predicts student achievement in co-taught literacy classes.

13th ARLE Conference;

2022-06-15 - 2022-06-17.

Foldnes, Njål

(2022)

Learning to Read in a Digital Age: Children’s Contemporary Reading Experiences: Early detection of struggling readers using machine learning on data from a serious literacy app.

Twenty-Ninth Annual SSSR Conference;

2022-07-01 - 2022-07-05.

Arntzen, Julie; Foldnes, Njål; Solheim, Oddny Judith

(2022)

Hvordan utvikler lesing og motivasjon for lesing seg for elever som strever med henholdsvis avkoding og/eller språkforståelse på første trinn? .

SkrivLes! Nordisk Forskerkonferanse om lesing, skriving og literacy;

2022-05-10 - 2022-05-11.

Arntzen, Julie; Solheim, Oddny Judith; Foldnes, Njål

(2022)

Utvikling av leseforståelse og motivasjon for elever som strever med avkoding eller språkforståelse på første trinn.

SkrivLes ;

2022-05-10 - 2022-05-11.

Walgermo, Bente Rigmor; Foldnes, Njål; Uppstad, Per Henning

(2022)

Motivational Dynamics of interest, self-concept and skill within a reading test situation.

NERA Conference Reykjavík 2022;

2022-06-01 - 2022-06-03.

Bakken, Arild Michel; Walgermo, Bente Rigmor; Foldnes, Njål; Uppstad, Per Henning

(2022)

Adaptvurder: A formative adaptive reading test for third grade in norway .

IACAT 22 Frankfurt 8th Conference: Enhancing testing and assessment in the digital age with computerized adaptive testing;

2022-09-20 - 2022-09-22.

Foldnes, Njål; Svendsen, Paal

(2021)

Elever skal game for å avdekke lese- og skrivevansker.

Foldnes, Njål; Vogt, Kaja

(2021)

Gaming i norsken.

Saplacan, Diana; Foldnes, Njål; Aune, Erlend; Dahl, Ida; Voigt, Jakob Michael; Goodwin, Morten

(2021)

AI & pedagogics.

Foldnes, Njål

(2021)

The flipped classroom in a large class of first-year business students: Performance and perceptions.

Cramérsällskapet. svens statistisk forening;

2021-10-26 - .

Foldnes, Njål

(2020)

NRK rogaland om GAMEPLAY .

Foldnes, Njål; Foldnes, Njål

(2020)

Forskere vil bruke maskinlæring for å avdekke skrivevansker.

Thomson, Jenny; Foldnes, Njål; Lundetræ, Kjersti; Solheim, Oddny Judith; Njå, Morten Bergsten; Uppstad, Per Henning

(2019)

Can childrens instructional gameplay Activity be used as a diagnostic indicator of Reading difficulties?.

Skriv!Les! Nordisk forskerkonferanse om lesing og skriving;

2019-05-07 - 2019-05-09.

Walgermo, Bente R.; Foldnes, Njål; Uppstad, Per Henning; Solheim, Oddny Judith

(2018)

First Grade Reading Skill and Motivation Dynamics.

Sig EARLI 2018 – Learning and development in early childhood;

2018-08-29 - 2018-08-31.

McTigue, Erin ; Solheim, Oddny Judith; Walgermo, Bente R.; Foldnes, Njål; Frijters, Jan c

(2017)

Measuring multiple dimensions of early literacy motivation through self-report at school entry.

17th Biennial EARLI Conference for research on learning and instruction;

2017-08-28 - 2017-09-02.

Wagner, Åse Kari H.; Foldnes, Njål; Lundetræ, Kjersti; Solheim, Oddny Judith; Uppstad, Per Henning

(2017)

På sporet - effekt av tidlig innsats for andrespråkselever med risiko for å utvikle lese- og skrivevansker.

SkrivLes! 2017 Nordisk forskerkonferanse om lesing og skriving;

2017-05-09 - 2017-05-11.

Strand, Olaug; Wagner, Åse Kari H.; Foldnes, Njål

(2017)

Flerspråklige elevers leseresultater i PIRLS 2016.

PIRLS konferanse;

2017-12-06.

Uppstad, Per Henning; Foldnes, Njål; Lundetræ, Kjersti; Solheim, Oddny Judith; Wagner, Åse Kari H.

(2016)

Effect of early intervention for minority children at-risk for reading difficulties.

National Network series on Perspectives on Developmental Deficits;

2016-04-15.

Foldnes, Njål; Hagtvet, Knut Arne

(2014)

The Choice of Product indicators in latent variable interaction models.

Two-Day Research SEminar;

2014-05-05 - 2014-05-06.

Foldnes, Njål

(2010)

The effect of kurtosis on the power of two test statistics.

SEM working group annual meeting;

2010-02-25 - 2010-02-26.

Foldnes, Njål

(2008)

Testing Structural Equation Models: The effect of Kurtosis.

7th International Conference on Social Science Methodology;

2008-09-01 - 2008-09-05.

Dahl, Geir; Flatberg, Truls; Foldnes, Njål; Gouveia, Luis

(2006)

The Jump Formulation for the Hop-Constrained Minimum Spanning Tree Problem.

The 8th INFORMS Telecommunications Conference;

2006-03-30 - 2006-04-02.

Foldnes, Njål; Mørken, Knut Martin; Vistnes, Arnt Inge

(2005)

En ny verden: Datamaskinen, beregninger og realfagsundervisning.

UNIPED.

ISSN 1500-4538.

Volum 28.

Hefte 3.

s.36-43.

Dahl, Geir; Foldnes, Njål

(2003)

A randomized algorithm for the multiple knapsack problem with assignment restrictions.

Int. network optimization conf.;

2003-10-27 - 2003-10-29.

Dahl, Geir; Foldnes, Njål

(2003)

On hop-constrained walk polytopes.

18th International Symposium on Mathematical Programming;

2003-08-18 - 2003-08-22.

Dahl, Geir; Foldnes, Njål

(2002)

Polyhedral Properties of certain 0/1 Knapsack Polytopes.

IFORS 2002;

2002-07-09 - .

Dahl, Geir; Foldnes, Njål

(2002)

Complexity of certain multiple knapsack problems.

Nordic Mathematical Prog. Society Conference;

2002-09-20 - .

Kunstnerisk produksjon

Walgermo, Bente R.; Uppstad, Per Henning; Foldnes, Njål; Bakken, Arild Michel; Øvereng, Liv Kristin Bjørlykke ; Vadstein, Anne Marta Vinsrygg; Thisland, Kirsti

(2023)

Kartleggingsprøve i lesing, første trinn (nynorsk/nokmål).

Walgermo, Bente R.; Uppstad, Per Henning; Foldnes, Njål; Bakken, Arild Michel; Øvereng, Liv Kristin Bjørlykke ; Vadstein, Anne Marta Vinsrygg; Thisland, Kirsti

(2022)

Kartleggingsprøve i lesing for 3. trinn (Nynorsk/Bokmål).