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| 4. |
- Andersson, Christian, et al.
(författare)
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Effects of neutralising agent, organic acids, and osmolarity on succinic acid production by Escherichia coli AFP184
- 2008
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- Using a low-cost medium Escherichia coli AFP184 has previously been reported to produce succinic acid with volumetric productivities close to 3 g L-1 h-1. At a total organic acid concentration of 30 g L-1 the productivity decreased drastically resulting in final succinate concentrations of 40 g L-1. The economical viability of biochemical succinic acid production would benefit from higher final succinic acid concentrations and volumetric productivities maintained at >2.5 g L-1 h-1 for an extended period of time. In the present work the effects of osmolarity and neutralising agent (NH4OH, KOH, NaOH, K2CO3, and Na2CO3) on succinic acid production by AFP184 were investigated. Highest concentration of succinic acid was obtained with Na2CO3, 75 g L-1. It was also found that the osmolarity resulting from succinate production and subsequent base addition, only marginally affected the productivity per viable cell. Organic acid inhibition due to the produced succinic acid on the other hand significantly reduced succinic acid productivity per viable cell. When using NH4OH productivity completely ceased at approximately 40 g L-1. Volumetric productivities remained at 2.5 g L-1 h-1 for 5 to 10 hours longer when using K- or Na-bases than when using NH4OH. However, loss of cell viability occurred, and together with the acid inhibition decreased the volumetric productivities. In this study it was demonstrated that by altering the neutralising agent it was possible to increase the period of high volumetric productivity in the anaerobic phase and improve the final succinic acid concentration by almost 100 %
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- Andersson, Ida, et al.
(författare)
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Productive vocabulary size development in children aged 18-24 months - gender differences
- 2011
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Ingår i: Proceedings from Fonetik 2011. - Stockholm. ; , s. 109-112
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- Several studies have shown slight differences in language skills between genders, favouring females. In order to investigate gender differences in speech production for Swedish children, the productive vocabulary size of 295 children, aged 18-24 months, was measured by the validated instrument SECDI-2. The size of the productive vocabulary was found to grow rapidly during this age. Significant gender differences were found at 21 and 24 months, but not at 18 months. The girls’ mean scores were higher.
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- Andersson, Karin, et al.
(författare)
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Att använda teori för att utveckla sin egen praktik - universitetsläraren som reflekterande praktiker
- 2018
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Konferensbidrag (refereegranskat)abstract
- Den här presentationen handlar om reflektion och lärande i universitetslärares arbete, med fokus på relationen mellan vad vi som universitetslärares tänker och planerar och vad vi sedan faktiskt gör. Med detta vill vi dels teoretisera den egna erfarenheten, dels utveckla vår praktik, som ett led i ett professionellt förhållningssätt som universitetslärare. Vi vill också bidra till en kollegial diskussion kring vårt arbete som universitetslärare.Vi är båda lärare och forskare i ämnet pedagogik och har omfattande kunskaper om lärande och om vad som krävs för att skapa goda lärmiljöer. Vi har dock en misstanke om att vi inte alltid efterlever våra kunskaper och ideal i handling i mötet med studenter. En del av syftet med presentationen är att analysera våra egna, ofta omedvetna, ideal och förgivettaganden som lärare i högre utbildning samt att reflektera över på vilka sätt det påverkar oss som lärare, inspirerade av ex Gibson (1998) och Leitch & Day (2000).Det empiriska materialet består av exempel hämtade från vår egen erfarenhet. De belysande exempel vi valt att använda oss av i den här texten har vi bearbetat med en form av aktionsforskning som kan kallas introspektiv reflektion. Metoden går i korthet ut på att använda sina egna erfarenheter som empiri, och behandla det genom teoretisk reflektion för att skapa ny kunskap. Genom att hantera den introspektiva reflektionen gemensamt och analysera med begrepp som lyfter från det individuella, ägnar vi oss inte bara åt subjektiv reflektion utan också kollegial reflektion.För att analysera våra erfarenheter använder vi teorierna om den reflekterande praktikern samt om transformativt lärande. Den reflekterande praktikern (Schön, 1983) har under flera årtionden använts inom aktionsforskning kring lärares arbete i skolan. Avsikten är att skapa nya former av kunskap och utveckling av praktiken, genom att lyfta reflektion som ett professionellt redskap (se t ex Goodson & Hargreaves, 1996; Meierdirk, 2016; Brookfield, 2017). Centrala begrepp är reflektion-i-handling och reflektion-över-handling. Det transformativa lärandet handlar om de processer i vilka en person skiftar perspektiv och på så vis ändrar sitt handlande, sina förgivettaganden och föreställningar om sig själv och världen (Mezirow, 2000; Wilhelmson, 1998). Ett transformativt lärande innebär att kritiskt granska både inåt och utåt. En inre kritisk granskning är att få fatt de i de egna föreställningar och yttre kritisk granskning är att vara kritisk till de ämnesspecifika kunskaperna som ska förmedlas i undervisning (Wilhelmson, 1998).Att tänka nytt kring den egna praktiken, att göra nytt, reflektera i handling på nya sätt ser vi som professionella redskap. Vi vill också lyfta vikten av reflektion-över-handling tillsammans med kollegor. Kollektivet behövs för både inre och yttre kritisk reflektion, så att lärande som transformation möjliggörs. Slutligen menar vi att det här angreppssättet kan vara ett redskap för att tillämpa ett vetenskapligt förhållningssätt i den egna praktiken. ReferenserBrookfield, Stephen (2017). Becoming a critically reflective teacher. San Francisco: Jossey-Bass Inc.Gibson, Linda S. (1998). Teaching as an encounter with the self: Unraveling the mix of personal beliefs, education ideologies, and pedagogical practices. Anthropology & education quarterly, 29 (3), pp 360-371.Goodson, Ivor & Hargreaves, Andy (1996). Teachers’ Professional Lives. London: Falmer Press.Leitch, Ruth, & Day, Christopher (2000). Action research and reflective practice: Towards a holistic view. Educational Action Research, 8 (1), pp 179-193.Meierdirk, Charlotte (2016). Is reflective practice an essential component of becoming a professional teacher?. Reflective Practice, 17 (3), pp 369-378.Mezirow, Jack (2000). Learning as transformation. Critical perspectives on a theory in progress. San Francisco: Jossey-Bass Inc.Schön, Donald (1983). The reflective practitioner. How professionals think in action. New York: Basic Books.Wilhelmson, Lena (1998). Lärande dialog. Samtalsmönster, perspektivförändring och lärande i gruppsamtal. Arbete och hälsa, vetenskaplig skriftserie, 1998:16.
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- Andersson, Ulrika, 1977
(författare)
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Increased focus on audience studies creates dividing lines at Swedish news desks
- 2009
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Ingår i: IAMCR 2009 Conference, Mexico City.
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- This case study of Swedish news practitioners´ perceptions of audience studies, finds an important dividing line between professional journalists and managing editors which points to a horizontal division of the news desks when it comes to audience-orientation. The study reveal managing editors to be far more audience-orientated than journalists. The paper discusses the implications of such a division at the news desk.
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| 8. |
- Andersson, Ulrika, 1977
(författare)
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Increased polarization in public trust in news media in Sweden 1990—2018
- 2019
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Ingår i: NordMedia 2019.
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- This paper focuses on if and how public trust in media has changed in Sweden during 1990--2018. It does so by analyzing trust in media as social institutions and trust in media as organizations. The result points to significant stability in public trust in media, at least on the overall level. Most people have trust in radio and television, especially in public service media. Trust in commercial media such as evening tabloids and commercial television is, however, low. While general trust in traditional media is stable, there are signs of increased polarization in certain social groups. Most obvious is the polarization between those who sympathize with the Left party (V) and sympathizers with the Sweden democrats (SD).
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| 9. |
- Andersson, Ulrika, 1977
(författare)
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Journalists´ attitudes toward readership studies
- 2008
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Ingår i: Paper presented at the 6th International Conference on Media and Communication, Atiner, Athens, Greece, May 19-22 2008.
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Konferensbidrag (refereegranskat)abstract
- Swedish newspapers have a long tradition of high penetration. Since the early 1990s though, most newspapers have seen a noticeable decline in their reader-ship. This decline is generally explained by an extended media market and the audience’s growing interest in new media. In order to attract the readers’ atten-tion Swedish newspapers have emphasized the need of getting knowlegde of the readers and their preferences. To reach knowledge in this area editorial offices find it necessary to focus on readership studies. But what are Swedish journalists’ attitudes in this matter? Are readership studies for good or bad? And do the attitudes differ between journalists and their superiors? This study finds significant differences in attitudes between the newspapers´ journalists and editors-in-chief. While journalists show a distanced, although quite positive, attitude to readership studies, their superiors presents an overall positive attitude in this matter. The paper discusses this division to be regarded as a distinction of prevailing professional ideals and business perspectives among the two groups. The study is based on two national surveys of Swedish journalists and edi-tors-in-chief carried out in 2005. Approximately 470 news practitioners at daily newspapers have answered the questionnaires.
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| 10. |
- Andersson, Ulrika, 1977
(författare)
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Journalists´ opinions on audience-created content in online newspaper
- 2009
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Ingår i: International Readings in Mass Media and Communications: Content, channels and audiences in the new millenium - interaction and interrelations, Moscow 2009.
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)abstract
- The focus on audience-created contents has increased rapidly for the past years in online news media all over the world. In Sweden most online newspapers offer their readers opportunities of participation, such as submitting comments on articles or uploading personal pictures and movies. Some engage readers to contribute to the newspaper through personal blogs, often tied to a certain subject such as being a part of a minority group or being a first-time parent. Others offer free blog portals for their readers to create their own blogs. Most newspapers encourage their readers to send pictures and information of occurrences that might be of interests for the news coverage. Editors-in-chief often see audience-created content as a way to strengthen the ties between the newspaper and the readers. They also stress the possible benefits of reader-created content as a way to complement the news coverage. But how do professional journalists view this increased focus on audience-created content? Do they also emphasise benefits of these kinds of contributions or do they tend to stress disadvantages of audience-created content? This paper is concerned with a case study of Swedish newspaper journalists´ opinions on audience-created content. Based on a survey of Swedish newspaper journalists and editors-in-chief, conducted in 2008-2009, the results reveal quite some differences in opinions in this matter. The paper discusses these differences to be regarded as a distinction of prevailing journalistic ideals and management among the two groups.
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