Person
henrik.gyllstadenglund.luse |
2022-05-05
Docent, universitetslektor
- Engelska
- Språk- och litteraturcentrum
Kontaktinformation
E-post henrik.gyllstadenglund.luse
Telefon 046–222 75 57
Rum SOL:H317c
Besöksadress
Helgonabacken 12, Lund
Postadress
Box 201, 221 00 Lund
Internpost hämtställe 20
Jag är docent och universitetslektor i engelsk språkvetenskap här vid Språk- och litteraturcentrum (SOL). Min undervisning är framförallt inriktad på ordkunskap och fraseologi, språkbedömning och testning, vetenskapliga metoder, samt akademiskt skrivande.
Forskningsmässigt har jag för närvarande tre huvudinriktningar:
* Flerspråkighet och vilken roll en individs hela språkliga repertoar kan spela vid inlärningen av ytterligare ett språk (i projektet 'MultiLingual Spaces')
* Andraspråksinlärning, specifikt hur man genom psykolingvistiska metoder kan undersöka och modellera hur ord och fraser bearbetas och lagras i det flerspråkiga mentala lexikonet.
* Språktestning och -bedömning, där jag intresserar mig för validitet och reliabilitet kopplat till test av ord- och fraskunskap.
Mer information om min forskning hittar du genom att klicka på någon av länkarna nedan.
Forskning
Min profil i Lunds universitets forskningsportal
Böcker (1 st)
Redaktörskap (3 st)
- (2021). (Red.) Language Practices in English Classrooms : From Primary School to Higher Education. Languages. MDPI AG.
- Barfield, A. & Gyllstad, H. (2009). (Red.) Researching Collocations in Another Language - Multiple Interpretations. Palgrave Macmillan.
- Gyllstad, H. & Heinat, F. (2003). (Red.) The Department of English in Lund : Working Papers in Linguistics Vol. 3. The Department of English in Lund: Working Papers in Linguistics, 4. The Department of English, Centre for Languages and Literature, Lund University.
Artiklar (14 st)
- Gyllstad, H., Sundqvist, P., Sandlund, E. & Källkvist, M. (accepted/in press). Effects of word definitions on meaning recall : A multi-site intervention in language-diverse L2 English classrooms. Language Learning. Wiley-Blackwell.
- Gyllstad, H. (2022). The Ontogenesis Model : How do multiword units fit in, and are most lexical representations in the L1 really at their optima?. Bilingualism: Language and Cognition, 25, 216-217. Cambridge University Press.
- Källkvist, M., Gyllstad, H., Sandlund, E. & Sundqvist, P. (2022). Towards an In-Depth Understanding of English-Swedish Translanguaging Pedagogy in Multilingual EFL Classrooms. HumaNetten, 48, 138-167. Institutionen för humaniora, Växjö universitet.
- Gyllstad, H., McLean, S. & Stewart, J. (2021). Using Confidence Intervals to Determine Adequate Item Sample Sizes for Vocabulary Tests : An Essential but Overlooked Practice. Language Testing, 38, 558-579. SAGE Publications.
- Lloyd-Smith, A., Gyllstad, H., Kupisch, T. & Quaglia, S. (2021). Heritage language proficiency does not predict syntactic CLI into L3 English. International Journal of Bilingual Education and Bilingualism, 24, 435-451. Routledge.
- Gyllstad, H. & Suhonen, L.-V. (2017). Is attrition a type of learning? : Modelling change in the multilingual mental lexicon. Linguistic Approaches to Bilingualism, 7, 700-703. John Benjamins Publishing Company.
- Källkvist, M., Gyllstad, H., Sandlund, E. & Sundqvist, P. (2017). English Only in Multilingual Classrooms?. LMS - Lingua, 2017, 27-31. Lärarna i moderna språk.
- Lloyd-Smith, A., Gyllstad, H. & Kupisch, T. (2017). Transfer into L3 English : Global accent in German-dominant heritage speakers of Turkish. Linguistic Approaches to Bilingualism, 7, 131-162. John Benjamins Publishing Company.
- Carrol, G., Conklin, K. & Gyllstad, H. (2016). Found in translation : the influence of the L1 on the reading of idioms in a L2. Studies in Second Language Acquisition, 38, 403-443. Cambridge University Press.
- Gyllstad, H. & Wolter, B. (2016). Collocational processing in light of the phraseological continuum model : Does semantic transparency matter?. Language Learning, 66, 296-323. Wiley-Blackwell.
- Gyllstad, H., Vilkaite, L. & Schmitt, N. (2015). Assessing vocabulary size through multiple-choice formats : Issues with guessing and sampling rates. ITL: Institut Voor Toegepaste Linguistik, 166, 278-306. John Benjamins Publishing Company.
- Wolter, B. & Gyllstad, H. (2013). Frequency of Input and L2 Collocational Processing: A Comparison of Congruent and Incongruent Collocations. Studies in Second Language Acquisition, 35, 451-482. Cambridge University Press.
- Wolter, B. & Gyllstad, H. (2011). Collocational links in the L2 mental lexicon and the influence of L1 intralexical knowledge. Applied Linguistics, 32, 430-449. Oxford University Press.
- Gyllstad, H. (2005). The Word Doctor. Essential Teacher: Compleat Links, 2. TESOL.
Bokkapitel (13 st)
- Källkvist, M., Gyllstad, H., Sandlund, E. & Sundqvist, P. (submitted). Reciprocity and challenges in researcher - student collaboration in a multilingual school. Collaborative Research in Language Education Research : Reciprocal Benefits and Challenges. Mouton de Gruyter.
- Källkvist, M., Sandlund, E., Sundqvist, P. & Gyllstad, H. (accepted/in press). Interaction in the Multilingual Classroom. I Kecskes, I. (Red.) The Cambridge Handbook of Intercultural Pragmatics. Cambridge University Press.
- Källkvist, M., Gyllstad, H., Sandlund, E. & Sundqvist, P. (2022). Språkpraktiker som didaktiskt kontrakt i skolämnet engelska. I Nordin, A. & Uljens, M. (Red.) Didaktikens språk : om skolundervisningens mål, innehåll och form (pp. 103-120). Gleerups Utbildning AB.
- Gyllstad, H. & Snoder, P. (2021). Exploring learner corpus data for language testing and assessment purposes : The case of verb + noun collocations. I Granger, S. (Red.) Perspectives on the L2 Phrasicon : The view from learner corpora (pp. 49-71). Multilingual Matters.
- Källkvist, M., Sundqvist, P., Gyllstad, H. & Sandlund, E. (2021). Flerspråkiga praktiker : en resurs i engelskundervisningen?. Resultatdialog 2021, 37-39. Vetenskapsrådet.
- Sundqvist, P., Gyllstad, H., Kàllkvist, M. & Sandlund, E. (2021). Mapping teacher beliefs and practices about multilingualism : The development of the multiBAP questionnaire. Pedagogical Translanguaging : Theoretical, Methodological and Empirical Perspectives, 56-75. Channel View Publications.
- Sundqvist, P., Gyllstad, H., Källkvist, M. & Sandlund, E. (2021). Mapping Teacher Beliefs and Practices about Multilingualism : The Development of the MultiBAP Questionnaire. I Juvonen, P. & Källkvist, M. (Red.) Pedagogical Translanguaging : Theoretical, Methodological and Empirical Perspectives (pp. 56-75). Multilingual Matters.
- Gyllstad, H. (2019). Measuring Knowledge of Multiword Items. I Webb, S. (Red.) Routledge Handbooks in Linguistics, Routledge Handbook of Vocabulary Studies (pp. 387-405). Routledge.
- Gyllstad, H. & Schmitt, N. (2018). Testing formulaic language. I Siyanova-Chanturia, A. & Pellicer-Sánchez, A. (Red.) Second Language Acquisition Research, Understanding formulaic language : A second language acquisition perspective (pp. 174-191). Routledge.
- Gyllstad, H., Granfeldt, J., Bernardini, P. & Källkvist, M. (2014). Linguistic correlates to communicative proficiency levels of the CEFR: The case of syntactic complexity in written L2 English, L3 French and L4 Italian. I Roberts, L., Vedder, I. & Jan H., H. (Red.) EUROSLA Yearbook (pp. 1-30), 14. John Benjamins Publishing Company.
- Gyllstad, H. (2013). Looking at L2 Vocabulary Knowledge Dimensions from an Assessment Perspective – Challenges and Potential Solutions. I Bardel, C., Laufer, B. & Lindqvist, C. (Red.) L2 vocabulary acquisition, knowledge and use: New perspectives on assessment and corpus analysis (pp. 11-28), Eurosla Monographs Series, 2. EUROSLA.
- Barfield, A. & Gyllstad, H. (2009). Introduction: Researching Second Language Collocation Knowledge and Development. I Barfield, A. & Gyllstad, H. (Red.) Researching Collocations in Another Language - Multiple Interpretations (pp. 1-18). Palgrave Macmillan.
- Gyllstad, H. (2009). Designing and Evaluating Tests of Receptive Collocation Knowledge: COLLEX and COLLMATCH. I Barfield, A. & Gyllstad, H. (Red.) Researching Collocations in Another Language - Multiple Interpretations (pp. 153-170). Palgrave Macmillan.
Encyklopediartiklar (1 st)
Konferensbidrag (67 st)
- Källkvist, M., Gyllstad, H., Sundqvist, P. & Sandlund, E. (2022). Pedagogical translanguaging and L2 English vocabulary learning during an intervention.
- Källkvist, M., Gyllstad, H., Sundqvist, P. & Sandlund, E. (2021). Practiced Language Policy in a Multilingual English Classroom : A nexus analysis of a lead teacher and his students.
- Källkvist, M., Sundqvist, P., Sandlund, E. & Gyllstad, H. (2021). Teachers, students and researchers as language-policy makers : A nexus analysis of research in multilingual classrooms.
- Lloyd-Smith, A., Gyllstad, H. & Kupisch, T. (2021). Lexical proficiency as a measure of language vitality in North Sámi.
- Sandlund, E., Sundqvist, P., Källkvist, M. & Gyllstad, H. (2021). 'Gamification' in the L2 English Classroom : Learners' interactional management of plenum Kahoot sessions for vocabulary learning.
- Gyllstad, H., Sundqvist, P. & Källkvist, M. (2020). Vocabulary learning under three different language conditions in foreign/second language (L2) English classrooms in Sweden.
- Gyllstad, H., Sundqvist, P., Källkvist, M. & Sandlund, E. (2020). Vocabulary learning under three different language conditions in six multilingual L2 English classrooms in Sweden.
- Källkvist, M., Gyllstad, H. & Sundqvist, P. (2020). Language Practices in a Multilingual English Classroom : Student Attitudes to Monolingual, Bilingual and Multilingual Practices.
- Källkvist, M., Gyllstad, H., Sandlund, E. & Sundqvist, P. (2020). Students and their teacher as language-policy makers in two multilingual secondary-school English classrooms.
- Sundqvist, P., Gyllstad, H. & Sandlund, E. (2020). MultiBAP : Developing and validating a questionnaire instrument for mapping teacher beliefs and practices about multilingualism.
- Gyllstad, H., Källkvist, M., Sandlund, E. & Sundqvist, P. (2019). Translanguaging in English Classrooms in Sweden? : A Study of Teacher Beliefs and Practices.
- Gyllstad, H., McLean, S. & Stewart, J. (2019). Empirically investigating the adequacy of item sample sizes of vocabulary levels and vocabulary size tests – A bootstrapping approach.
- Källkvist, M., Gyllstad, H., Sandlund, E. & Sundqvist, P. (2019). English Only i Multilingual Classrooms? : A Study of Students' Self-Reported Practices and Attitudes.
- Källkvist, M., Gyllstad, H., Sandlund, E. & Sundqvist, P. (2019). English-Swedish Translanguaging in Multilingual Secondary English Classrooms : A Study of Students' Attitudes.
- Källkvist, M., Gyllstad, H., Sandlund, E. & Sundqvist, P. (2019). Translanguaging Practices in English Language Teaching in Scandinavian Contexts.
- Källkvist, M., Gyllstad, H., Sundqvist, P. & Sandlund, E. (2019). Code-switching in two multilingual secondary-school English classrooms in Sweden : Teacher practices and students' attitudes.
- Källkvist, M., Sundqvist, P., Gyllstad, H. & Sandlund, E. (2019). Språkpraktiker i flerspråkiga klassrum : engelska på högstadiet.
- Lloyd-Smith, A., Pereira Soares, S. M., Di Pisa, G., Gyllstad, H. & Kupisch, T. (2019). Operationalizing HL use in adult-aged HSs of Italian and Turkish.
- Nylander, E. & Gyllstad, H. (2019). Adult upper secondary school level students’ lexical inferencing : Investigating the effects of collaboration, global L2 proficiency and patterns of interaction.
- Sandlund, E., Sundqvist, P., Källkvist, M. & Gyllstad, H. (2019). "Nej, it's RING!" : Language Practices in multilingual English classrooms.
- Sundqvist, P., Gyllstad, H., Källkvist, M. & Sandlund, E. (2019). L2 English teaching and vocabulary learning under three different conditions for language use : An intervention study in real classrooms.
- Källkvist, M., Gyllstad, H., Sandlund, E. & Sundqvist, P. (2018). Alltid engelska i engelskundervisningen? : Flerspråkiga elevers perspektiv.
- Sundqvist, P., Gyllstad, H., Källkvist, M. & Sandlund, E. (2018). Developing and validating a questionnaire to map teacher beliefs and practices relating to multilingualism.
- Sundqvist, P., Gyllstad, H., Källkvist, M. & Sandlund, E. (2018). Language Practices and Ideologies among English Teachers in Sweden.
- Sundqvist, P., Gyllstad, H., Källkvist, M. & Sandlund, E. (2018). Teacher Beliefs and Practices : Multilingualism in English Classrooms.
- Källkvist, M., Gyllstad, H., Sandlund, E. & Sundqvist, P. (2017). Framtidens undervisning i engelska : enspråkig, tvåspråkig eller flerspråkig?.
- Källkvist, M., Gyllstad, H., Sandlund, E. & Sundqvist, P. (2017). Multilingual Spaces : Language Practices in English Classrooms. A Project Presentation.
- Lloyd-Smith, A., Gyllstad, H., Kupisch, T. & Quaglia, S. (2017). When early bilinguals acquire foreign languages : The role of language dominance for syntactic and phonological transfer.
- Gyllstad, H. (2016). Comparing L1 and L2 phraseological processing : free combinations, collocations and idioms.
- Gyllstad, H. (2016). Processing Specificity in Learning Collocations.
- Gyllstad, H. (2016). Using measures of lexical knowledge as proxies for general language proficiency.
- Lloyd-Smith, A., Gyllstad, H., Kupisch, T., Quaglia, S. & Suhonen, L.-V. (2016). Language dominance as the main predictor for syntactic transfer in heritage speakers acquiring L3 English : Embedded wh-questions, lexical and phonological proficiency.
- Nylander, E. & Gyllstad, H. (2016). Advanced learners’ lexical inferencing : Investigating the effects of depth of vocabulary knowledge and target word part-of-speech.
- Gyllstad, H. (2015). A Research-based Approach to Vocabulary Learning and Teaching : Encouraging Learner Autonomy and Accountability.
- Gyllstad, H. (2015). Pay an invoice, pay a visit, pay the piper : Testing the predictions of a phraseological continuum model for processing in a second language. EUROSLA 25 : Book of Abstracts, 147-147.
- Lloyd-Smith, A., Gyllstad, H. & Kupisch, T. (2015). Phonological transfer in Turkish heritage speakers acquiring English as an L3.
- Lloyd-Smith, A., Gyllstad, H. & Kupisch, T. (2015). The role of language dominance in German-Turkish heritage speakers of L3 English.
- Carrol, G., Conklin, K. & Gyllstad, H. (2014). A problem shared is a problem halved : How does congruency between languages affect idiom processing in bilingual speakers.
- Carrol, G., Conklin, K. & Gyllstad, H. (2014). Found in translation : Evidence from response times and eye-tracking shows that translated idioms are treated as formulaic units in L2.
- Gyllstad, H. & Wolter, B. (2014). Processing L2 Word Combinations: What Role Does Degree of Semantic Transparency Play?.
- Gyllstad, H. & Wolter, B. (2014). Processing word combinations in a foreign language : Testing the predictions of a phraseological continuum model.
- Vilkaite, L. & Gyllstad, H. (2014). Formulaic Language: How Can It Be Assessed?.
- Granfeldt, J., Bernardini, P., Gyllstad, H., Källkvist, M. & Wiberg, E. (2013). Linguistic correlates to the CEFR levels.
- Granfeldt, J., Gyllstad, H. & Källkvist, M. (2013). Linguistic correlates to communicative proficiency levels of the CEFR:The case of syntactic complexity in L2 English and L3 French. I Rosén, C., Simfors, P. & Sundberg, A.-K. (Red.) Språk i undervisning. Rapport från ASLA:s vårsymposium, Linköping, 11-12 maj, 2012 (pp. 103-113), 24. ASLA, Association suédoise de linguistique appliquée.
- Gyllstad, H. & Wolter, B. (2013). The Semantics of Word Combinations : Learners’ Processing of Collocations and Free Combinations.
- Schmitt, N., Gyllstad, H. & Vilkaite, L. (2013). Investigating the vocabulary size Test: How well does it work for SLA research purposes?.
- Vilkaite, L., Gyllstad, H. & Schmitt, N. (2013). Vocabulary size and EAP: Evaluating the Vocabulary Size Test.
- Granfeldt, J., Bernardini, P., Gyllstad, H., Källkvist, M. & Wiberg, E. (2012). Lingvistiska korrelat till den Gemensamma europeiska referensramens nivåer.
- Gyllstad, H. (2012). Validating the Vocabulary Size Test.
- Vilkaite, L., Gyllstad, H. & Schmitt, N. (2012). Validation evidence for and against the Vocabulary Size Test – A closer look at the 3K, 6K and 9K bands.
- Gyllstad, H. (2011). A short longitudinal study of foreign language vocabulary size – the case of advanced Swedish learners of English.
- Wolter, B. & Gyllstad, H. (2011). Collocational processing in an L2: The role of L1 knowledge and frequency of input.
- Wolter, B. & Gyllstad, H. (2011). Collocational processing in an L2: The role of L1 knowledge and frequency of input.
- Gyllstad, H. (2010). L2 Vocabulary Knowledge Constructs and Assessment - What Is the Way Forward?.
- Gyllstad, H. (2010). Less is more? Advanced learners' knowledge of a high-frequency polysemous verb.
- Gyllstad, H. & Wolter, B. (2010). Investigating the potential influence of L1 intralexical links on the formation of L2 intralexical links.
- Wadsö-Lecaros, C., Beijer, F., Gyllstad, H., Johansson, M., Lecaros, M., Lindström, F., Schönthal, T. & Stymne, R. (2010). AWELU : En webbaserad plattform för akademiskt skrivande på engelska vid LU. Textkompendium för HT-områdets pedagogiska inspirationskonferens, 79-85. Område humaniora och teologi, Lunds universitet.
- Wolter, B. & Gyllstad, H. (2009). L1 knowledge and the development of L2 intralexical links.
- Gyllstad, H. (2007). Positioning tests of collocation knowledge in relation to assumed L2 vocabulary dimensions.
- Gyllstad, H. & Wolter, B. (2006). Lexical and conceptual network restructuring - a fresh take on L2 associative behaviour.
- Gyllstad, H. (2005). Developing and investigating the reliability and validity of tests of collocations for intermediate and advanced learners of English.
- Gyllstad, H. (2005). Developing Test Formats for Collocation Knowledge in Second Language Learners: COLLEX and COLLMATCH.
- Gyllstad, H. (2005). Devising and evaluating tests of collocation knowledge: COLLEX and COLLMATCH.
- Gyllstad, H. (2005). Devising Tests of Collocational Knowledge – Some Preliminary Results.
- Gyllstad, H. (2004). Testing L2 Vocabulary - Swedish Learners of English, Their Knowledge of Lexical Collocations and How to Test It.
- Gyllstad, H. (2004). Testing L2 vocabulary: Swedish advanced learners of English and their command of collocations.
- Gyllstad, H. (2004). Testing L2 Vocabulary: Swedish Learners of English, Their Command of Lexical Collocations and How to Test It.
Working papers (2 st)
- Gyllstad, H. (2005). Words that go together well: developing test formats for measuring learner knowledge of English collocations. The Department of English in Lund: Working Papers in Linguistics, Volume 5.
- Gyllstad, H. (2004). Testing L2 Vocabulary: current test formats in English as a L2 used at Swedish universities. The department of English in Lund: working papers in linguistics.
Recensioner (1 st)
Artiklar i facktidskrifter och populärpress (1 st)
Handledning vid Lunds universitet (1 st)
Undervisning
- ENGA04, Engelska: Grundkurs
- ENGA11, Engelska: Engelska språket
- ENGH11, Engelska: Grundkurs (1-15) (Engelska språket)
- ENGK03, Engelska: Kandidatkurs
- ENGK06, Engelska: Kandidatkurs (76-90) Examensarbete
- SPVM11, Språk och språkvetenskap: Första- och andraspråksinlärning
- ÄEND11, Engelska 1
- ÄEND14, Engelska IV
Övriga uppdrag och meriter
Handledning av doktorander- Jag har handlett två doktorander fram till disputation: Anika Lloyd-Smith, vid Konstanz universitet, mars 2020 (som biträdande handledare), och Lari-Valtteri Suhonen, vid Lunds universitet, december 2020 (som huvudhandledare).
- För närvarande är jag huvudhandledare för en doktorand (Elin Nylander, Lunds universitet).
- Jag har varit opponent/medlem av betygskommitté på tio doktorsavhandlingar: 2012 (Suhad Sonbul), 2013 (Paweł Szudarski), båda vid University of Nottingham, Storbritannien; 2014 (Robert Lee Revier), vid Aarhus Universitet, Danmark; 2015 (Ketty Holmström), vid Lunds universitet (som suppleant); 2016 (Mélodie Garnier), vid University of Nottingham, Storbritannien; 2019 (Richard LaBontee), vid Göteborgs universitet, och (Per Snoder) vid Stockholms universitet, Sverige); 2020 (Joanne Yager) Lunds universitet (som suppleant); 2020 (Juan Tang Castillo) vid University of Hong Kong, Kina; och 2020 (Phillipe Collberg) vid Lunds universitet (som suppleant).
- Jag är medlem av redaktionsnämnden (Editorial Board) för tidskriften ITL - International Journal of Applied Linguistics (utgiven av John Benjamins), samt tidskriften Lingua (utgiven av Elsevier)
- Jag är tillsammans med Elke Peters redaktör för ämnesområdet 'Lexis' för andra utgåvan av The Encyclopedia of Applied Linguistics, under kommande utgivning av Wiley-Blackwell
- Jag ombeds kontinuerligt att granska artiklar insända till etablerade internationella vetenskapliga tidskrifter, och jag har över tid anlitats som granskare för följande tidskrifter (i alfabetisk ordning):
'Applied Linguistics'; 'Applied Linguistics Review'; 'Applied Psycholinguistics'; 'Corpus Linguistics and Linguistic Theory'; 'Frontiers in Psychology'; 'International Journal of Applied Linguistics'; 'International Journal of Corpus Linguistics'; 'International Journal of Learner Corpus Research'; 'International Review of Applied Linguistics in Language Teaching'; 'ITL - International Journal of Applied Linguistics'; 'Journal of Psycholinguistic Research'; 'Language Assessment Quarterly'; 'Language Awareness'; 'Language Learning'; 'Language Learning & Technology'; 'Language Teaching'; 'Language Teaching Research'; 'Language Testing'; 'Lingua'; 'Linguistic Approaches to Bilingualism'; 'Modern Language Journal'; 'Reading in a Foreign Language'; 'Second Language Research'; 'Studia Linguistica'; 'Studies in Second Language Acquisition'; 'System'; 'TESOL Quarterly'; 'The Mental Lexicon'.
- Jag har även varit granskare av artiklar för the Encyclopedia of Applied Linguistics (utgiven av Wiley Blackwell), samt bokförslag för Routledge och Cambridge University Press.
- Jag har fungerat som granskare av forskningsprojektansökningar för statliga forskningsfinansiärer i Belgien och Holland.
- Under 2021 var jag ledamot av Beredningsgruppen UV-4 Ämnesdidaktik inom området Utbildningsvetenskap på Vetenskapsrådet, och under 2022 är jag ledamot samt vice ordförande i densamma.
- Jag är medlem av styrgruppen för forskningsmiljön LAMiNATE vid HT-fakulteterna vid Lunds universitet.
Docent, universitetslektor
- Engelska
- Språk- och litteraturcentrum
Kontaktinformation
E-post henrik.gyllstadenglund.luse
Telefon 046–222 75 57
Rum SOL:H317c
Besöksadress
Helgonabacken 12, Lund
Postadress
Box 201, 221 00 Lund
Internpost hämtställe 20