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2015
1 Hagen, Nils.
Bibliometrics at the crossroads: At what point does inaccurate data become worse than no data, and what to do about it. The 20th Nordic Workshop on Bibliometrics and Research Policy 2015; 2015-10-01 - 2015-10-02
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2 Hagen, Nils.
Contributory inequality alters assessment of academic output gap between comparable countries. Journal of Informetrics (JOI) 2015 ;Volum 9.(3) s. 629-641
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2014
3 Hagen, Nils.
Counting and comparing publication output with and without equalizing and inflationary bias. Journal of Informetrics (JOI) 2014 ;Volum 8.(2) s. 310-317
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4 Hagen, Nils.
Reversing the byline hierarchy: The effect of equalizing bias on the accreditation of primary, secondary and senior authors. Journal of Informetrics (JOI) 2014 ;Volum 8.(3) s. 618-627
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2013
5 Hagen, Nils.
Harmonic coauthor credit: A parsimonious quantification of the byline hierarchy. Journal of Informetrics (JOI) 2013 ;Volum 7.(4) s. 784-791
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6 Hagen, Nils.
Institusjonelt plagiat og unøyaktig rapportering av forfatterandeler. Etikk i forskning og undervisning Forskerforbundets sommerseminar; 2013-06-13
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7 Hagen, Nils.
Institutional plagiarism. 3rd World Conference on Research Integrity; 2013-05-05 - 2013-05-08
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8 Hagen, Nils.
Nedbeiting av tareskogen. Åpent møte om tarehøsting 2013; 2013-09-19 - 2013-09-20
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2012
9 Hagen, Nils.
Assessing the assessment: effect of bibliometric bias on the ranking of Canadian aquaculture researchers’ publication performance. I: Aquaculture Canada 2012. New frontiers: bridging technology and economic growth. Proceedings of the contributed papers of the 29th Annual General Meeting of the Aquaculture Association of Canada, May 27 - 30, 2012. : Aquaculture Association of Canada 2012 ISBN 978-0-9881415-2-0.
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10 Hagen, Nils.
Assessing the assessment: effect of bibliometric bias on the ranking of Canadian aquaculture researchers’ publication performance. Aquaculture Canada 2012, 29th Annual General Meeting of the Aquaculture Association of Canada; 2012-05-27 - 2012-05-30
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2011
11 Poinar, George Jr.; Lewis, Samantha C.; Hagen, Nils; Hyman, Bradley.
Systematic affinity of the sea urchin parasite, Echinomermella matsi Jones & Hagen (Enoplida: Echinomermellidae). Nematology 2011 ;Volum 13.(6) s. 747-753
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2010
12 Hagen, Nils T..
Authorship Credit in Academic Writing: A Cross-Disciplinary Bibliometric Analysis of Multiple Authorship in Publication Based PhD Dissertations. Academic Writing from bachelor to PhD; 2010-10-07 - 2010-10-08
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13 Hagen, Nils T..
Deconstructing doctoral dissertations: how many papers does it take to make a PhD?. Scientometrics 2010 ;Volum 85.(2) s. 567-579
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14 Hagen, Nils T..
Harmonic Partitioning of Authorship Credit Facilitates Bottom-up Bibliometric Research. 15th Nordic Workshop on Bibliometrics and Research Policy; 2010-09-28 - 2010-09-29
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15 Hagen, Nils T..
Harmonic publication and citation counting: sharing authorship credit equitably - not equally, geometrically or arithmetically. Scientometrics 2010 ;Volum 84.(3) s. 785-793
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16 Hagen, Nils T.; Siikavuopio, Sten Ivar.
Recent Advances in Sea-Urchin Aquaculture in Norway. Bulletin of the Aquaculture Association of Canada 2010 ;Volum 108.(1) s. 18-22
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2009
17 Hagen, Nils T..
Credit for Coauthors. Science 2009 ;Volum 323.(5914) s. 583-583
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2008
18 Hagen, Nils T..
Enlarged lantern size in similar-sized, sympatric, sibling species of Strongylocentrotid sea urchins: from phenotypic accommodation to functional adaptation for durophagy. Marine Biology 2008 ;Volum 153.(5) s. 907-924
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19 Hagen, Nils T..
Harmonic Allocation of Authorship Credit: Source-Level Correction of Bibliometric Bias Assures Accurate Publication and Citation Analysis. PLOS ONE 2008 ;Volum 3.(12)
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20 Hagen, Nils T.; Jørgensen, Ida; Egeland, Einar Skarstad.
Sex-specific seasonal variation in the carotenoid content of sea urchin gonads. Aquatic Biology 2008 ;Volum 3.(3) s. 227-235
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2006
21 Hagen, Nils T..
Colorimetric and visual assessment of color variation in sea urchin gonads. AQUA 2006 "Linking tradition & technology. Highest quality for the consumer"; 2006-05-09 - 2006-05-13
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22 Hagen, Nils T..
SPIINES 2 - Sea Urchin Production in Integrated Systems, their Nutrition and Roe Enhancement. EC workshop: Fish Farming Technologies for SMEs ? Technology Challenges and Market Opportunity; 2006-11-23 - 2006-11-23
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23 Hagen, Nils T.; Jørgensen, Ida; Egeland, Einar Skarstad.
Farge i fôr og kvalitet på gonader. Skjellkonferansen 2006 "Vareflyt, planlegging og styring - fra fjord til bord?; 2006-03-17 - 2006-03-18
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24 Hagen, Nils T.; Tryggestad, Erik.
Fôringsforsøk av kråkeboller med blåskjell. Skjellkonferansen 2006 "Vareflyt, planlegging og styring - fra fjord til bord?; 2006-03-17 - 2006-03-18
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2005
25 Hagen, Nils T..
Experimental production of sea urchin hybrids in Northern Norway. Aquaculture Canada 2005 "Navigating Forward: New Directions for Food Safety, Quality and Social Diversification"; 2005-07-03 - 2005-07-06
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26 Hagen, Nils T..
Kråkeboller og nematodeparasitten Echinomermella matsi. MtDNA Seminar for Molekylær Bioteknologigruppe UiTø & HBO; 2005-02-24 - 2005-02-25
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27 Hagen, Nils T..
Landbasert oppdrettsteknologi for kråkeboller - utfordringer. Skjellkonferansen 2005. Produksjon, Kapital og Marked.; 2005-03-11 - 2005-03-12
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2004
28 Hagen, Nils T..
Actual and impending kelp forest destruction by sea urchins. XVIII International Seaweed Symposium; 2004-06-20 - 2004-06-25
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29 Hagen, Nils T..
Near exponential growth of hatchery reared Strongylocentrotus droebachiensis. I: Sea Urchins: Fisheries and Ecology. Lawrence, J.M. & O. Guzmán (eds). Lancaster, Pennsylvania, USA: DEStech Publications 2004 s. 359-365
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30 Hagen, Nils T..
Nematode infection in experimental sea based cultivation of sea urchins in Norway. Aquaculture Canada 2004; 2004-10-17 - 2004-10-20
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2003
31 Hagen, Nils T..
Dynamics of marine biodiversity in northern Norway. 38th European Marine Biology Symposium, Marine Biodiversity: Patterns and Processes, Assessment, Threats, Management and Conservation; 2003-09-08 - 2003-09-12
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32 Hagen, Nils T..
Echinoculture: Intrinsically beyond monoculture. "Beyond monoculture" Aquaculture Europe 2003; 2003-08-08 - 2003-08-12
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33 Hagen, Nils T..
Evaluation of electric stimulation as a method for inducing green sea urchins to spawn. ? 2003 s. 237-242
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34 Hagen, Nils T..
KCl induced paralysis facilitates detachment of hatchery reared juvenile green sea urchins, Strongylocentrotus droebachiensis. Aquaculture 2003 ;Volum 216. s. 155-164
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35 Hagen, Nils T..
Nematoden Echinomermella matsi. Parasittproblem ved villfangst og oppfôring av kråkeboller. Bodø: Høgskolen i Bodø 2003 (ISBN 8273144089) 34 s. (7)
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36 Skern, R.; Mauritzen, Mette; Hagen, Nils T.; Hegseth, E. N..
Macroalgal propagules do not survive digestion by the green sea urchin Strongylocentrotus droebachiensis. Sarsia 2003 ;Volum 88. s. 307-315
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37 Skern-Mauritzen, Rasmus; Skern-Mauritzen, Mette; Hagen, Nils Thorstein; Hegseth, Else Nøst.
Macroalgal propagules do not survive digestion by the green sea urchin Strongylocentrotus droebachiensis. Sarsia 2003 ;Volum 88.(5) s. 307-315
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2002
38 Hagen, Nils T..
Resultater fra forsøk med klekkeriproduserte kråkeboller i sjø. Oppdrett av nye marine arter, 2002; 2002-10-09 - 2002-10-10
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39 Hagen, Nils T.; Andersen, Åsmund; Stabell, Ole B..
Alarm responses of the green sea urchin, Strongylocentrotus droebachiensis, induced by chemically labelled durophagous predators and simulated acts of predation. Marine Biology 2002 ;Volum 140. s. 365-374
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2001
40 Hagen, Nils T..
Electric stimulation as a method for inducing green sea urchins to spawn. 6th European Conference on Echinoderms; 2001-09-03 - 2001-09-05
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41 Hagen, Nils T..
Kan bruk av smittefri yngel fra klekkeri forebygge parasittinfeksjon?. Forskningsstasjonen, Mørkvedbukta, Bodø: Kråkebolleprosjektet, AFN, Høgskolen i Bodø 2001 1 s. (1)
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42 Hagen, Nils T..
Kan kråkebolleparasitten Echinomermella matsi bidra til gjenvekst av tareskogen?. Forskningsstasjonen, Mørkvedbukta, Bodø: Kråkebolleprosjektet, AFN, Høgskolen i Bodø 2001 1 s. (1)
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43 Hagen, Nils T..
Kråkebolleparasitten Echinomermella matsi: økologi og akvakultur i kystsonen. Norske Havforskeres Forening, årsmøte; 2001-11-23 - 2001-11-25
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44 Hagen, Nils T..
Parasitt/kvalitetsproblematikk ved villfangst og oppfôring av kråkeboller. Marinfiskkonferanse "2001 marine arter i oppdrett". Kråkebollenettverket; 2001-10-29 - 2001-10-31
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45 Hagen, Nils T..
Yngelproduksjon og intensivt oppdrett av kråkeboller. Marinfiskkonferanse "2001 marine arter i oppdrett". Kråkebollenettverket; 2001-10-31 - 2001-10-31
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46 Hagen, Nils T.; Andersen, Åsmund; Stabell, Ole B.; Stabell, Ole B..
Alarm responses of the green sea urchin, Strongylocentrotus droebachiensis, induced by chemically labelled durophagous predators and simulated acts of predation. Marine Biology 2001
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47 Hagen, Nils T.; Solberg, Christel.
Quality control of fishery products using NIR spectroscopy: predicting the biochemical composition and colour of sea urchin gonads. 70th Anniversary of the Japanese Society of Fisheries Science International Commemorative Symposium; 2001-10-01
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48 Hagen, Nils T.; Stabell, Ole B.; Andersen, Åsmund; Candia Carnevali, Maria D.; Bonasoro, Francesco.
Alarm response of Strongylocentrotus droebachiensis induced by chemical labelling of Anarhichas lupus. Fifth European Conference on Echinoderms; 2001
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2000
49 Hagen, Nils T..
Chemically induced paralysis in juvenile sea urchins. Aquaculture Canada 2000. Aquaculture in the new millennium: Innovation and sustainability; 2000
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50 Hagen, Nils T..
Kråkeboller. Industriell yngelproduksjon. Oppdrett av marine arter - 2000; 2000
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