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  • 1.
    Abbaszadeh, Sepideh
    et al.
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies.
    Espinoza, Daniela
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies.
    Instagram: en plattform för att frigöra kvinnors kroppar genom hashtags.: Ett bidrag i diskussionen angående aktivism på Instagram.2016Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The naked body is an entity that has always been present in both the “real” world and the media. The anatomy of our bodies isn’t something we can avoid; today it reflects the reality that has developed partly from media. According to Instagram’s guidelines users are not allowed to publish naked or semi-naked pictures but that does not stop certain users that are critical to how the body norms and censorship are portrait today. In our study, we take part of research regarding gender in multimedia settings and how they have affected our daily lives. As well as studies, which research the usage of hashtags and how to circumvent censorship. The focus for this study is to research what role Instagram and hashtags have in generating a public discussion as well to draw attention to various issues and causes that are based on norm critique. We have conducted two different observations, held interviews with activists and created an online-survey for users to answer what they think about the Instagram community guidelines. The results show that there is an underlying discrimination acceptance within Instagram and their community guidelines. We can also see that women and users who uses hashtags can spread their causes more effectively, although they are simultaneously at risk for being censored depending on the hashtag they use. According to our respondents from our research there is an agreement regarding the need of updating Instagram’s community guidelines, which could help with eliminate the current discrimination against women and their breasts. At the end of this study we are giving a proposal to how Instagram can work with their censoring in a more critical way. This may contribute to an agenda to make social media platforms safer and less discriminating.

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  • 2.
    Abdelgadir, Mohanad
    et al.
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies, Environmental Science. Södertörn University, Centre for Baltic and East European Studies (CBEES), Baltic & East European Graduate School (BEEGS).
    Alharbi, Randa
    University of Tabuk, Saudi Arabia.
    AlRashidi, Monif
    University of Ha'il, Saudi Arabia.
    Alatawi, Abdulaziz S.
    University of Tabuk, Saudi Arabia.
    Sjöling, Sara
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies, Environmental Science.
    Dinnétz, Patrik
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies, Environmental Science.
    Distribution of denitrifiers predicted by correlative niche modeling of changing environmental conditions and future climatic scenarios across the Baltic Sea2023In: Ecological Informatics, ISSN 1574-9541, E-ISSN 1878-0512, Vol. 78, article id 102346Article in journal (Refereed)
    Abstract [en]

    Denitrifying microbial communities provide an important ecosystem function in aquatic systems. Yet, knowledge on predictive and modeling of these complex and changing communities is limited. The emergently challenging question of how the geographical distribution of denitrifiers responds to ongoing and future environmental change is not yet fully understood. In our study we use metadata-based correlative niche modeling to analyze the geographical distribution of selected putative denitrifiers in the genus Sphingomonas, Mycoplana, Shewanella, and Alteromonas at different predicted environmental conditions and future climatic scenarios across the Baltic Sea. Using the predictive power of an ensemble modeling approach and eight different machine-learning algorithms, habitat suitability and the distribution of the selected denitrifiers were evaluated using geophysical and bioclimatic variables, benthic conditions, and four Representative Concentration Pathway (RCP) trajectories of future global warming scenarios. All algorithms provided successful prediction capabilities both for variable importance, and for habitat suitability with Area Under the Curve (AUC) values between 0.89 and 1.00. Model findings revealed that salinity and nitrate concentrations significantly explained the variation in distribution of the selected denitrifiers. Rising temperatures of 0.8 to 1.8 °C at future RCP60–2050 trajectories are predicted to diminish or eliminate the bioclimatic suitable habitats for denitrifier distributions across the Baltic Sea. Multi-collated terrestrial and marine environmental variables contributed to the successful prediction of denitrifier distributions within the study area. The correlative niche modeling approach with high AUC values presented in the study allowed for accurate projections of the future distributions of the selected denitrifiers. The modeling approach can be used to improve our understanding of how ongoing and predicted future environmental changes may affect habitat suitability for organisms with denitrification capacity across the Baltic Sea.

  • 3.
    Abdlbari, Abdulbari
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies.
    Användning av mobilapplikationer i smartphones hos unga vuxna: En fallstudie bland studenter och arbetstagare2012Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Nu förtiden har det blivit allt vanligare att människor använder sig av smartphones. I denna uppsats har jag kartlagt smartphone-användares användningsvanor och mönster hos unga vuxna som antingen studerar eller arbetar. För att få fram den information jag behöver har jag valt att använda mig av dagböcker där sex stycken respondenter deltog under en fyra dagars period och även intervjuer där tre av de sex respondenterna var deltagande efter genomförandet av dagböckerna. Mina resultat visar fascinerande nog att smartphones används till största del på platser där användarna är relativt stillasittande som till exempel i hemmet. Dessutom har det visat sig att studenter har en stor användning av applikationer och där med smartphones, ofta i samband med deras studier, speciellt applikationer kopplade till molntjänster.

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    Användning av mobilapplikationer i smartphones hos unga vuxna
  • 4.
    Abdlbari, Abdulbari
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies.
    Parkeringsapplikationen: Utveckling av en mobilapplikation för iPhone.2013Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This report describes procedures and preparations made for developing a mobile application.Using a questionnaire and usability tests, I have developed a design document for a parkingapplication for the iPhone 4. The purpose of the application is to help drivers find allowedparking spaces thus making roads safer for everyone while the driver avoids parking tickets.

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  • 5.
    Abdulrasul, Zahraa
    Södertörn University, Teacher Education.
    Bråktal, decimaltal och procent: En kvalitativ studie om hur sambandet mellan bråktal, decimaltal och procent undervisas i årskurs 4-62017Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The aim of this study is to investigate how the connection between fractions, decimals and percent are taught in grade 4-6 with more focuson the fractions. The empirical data was obtained by qualitative methods comprising interviews with four mathematic elementary school teachers, in addition to two observations with two classrooms in grade 6. The data presented is from one school. The theoretical framework is based on Liping Ma profound understanding of fundamental mathematics and theories of subject didactic concepts of Kilborn, Löwing, Karlsson & Kilborn and MacIntosh. The results of the interviews and observations show that the connection between fractions, decimals and percent is being taught without illuminating how the mentioned are connected. The aspect of fractions, which has been taught to show the relation between fractions and decimals, was division as metaphor. While there was no aspect of fractions has been taught to show the relation between it and percent except that a percent is a hundredth. Such as 40% is equal with 40/100. In addition, fractions has been taught by using visual aids, but never taught by using number line. In conclusion the connection between fractions, decimals and percent has not been related clearly with basic concept fractions.

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  • 6.
    Ablouh, Amin
    et al.
    Södertörn University, Teacher Education.
    Sedraoui, Nasim
    Södertörn University, Teacher Education.
    Traditionell undervisning gentemot det kooperativa lärandet: En interventionsstudie om användningen av det kooperativa lärandet i matematikundervisningen2023Independent thesis Advanced level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This study aims to investigate the effects of cooperative learning on pupils’ knowledge and development with a particular focus on concepts and conceptual understanding in mathematics. By employing both qualitative and quantitative research methods, the study compared the effectiveness of cooperative learning to traditional teaching approaches in grade 4. The following question was formulated to research the aim of this study:

    • How does pupils’' understanding of concepts in mathematics differ after traditional teaching compared to teaching with cooperative learning in grade 4?

    Svanelid’s (2014) three aspects were used as an analysis model in this intervention study. With the analysis model, teachers can assess whether pupils have understood various mathematical concepts. The results of the aim showed that cooperative learning had a significant positive impact on pupils’ learning and their understanding of geometrical concepts. Through collaborative activities and interactive discussions, pupils actively participated in the learning process, leading to improved comprehension and retention of geometric concepts. However due to introduction of methodological weaknesses and potential biases the results can not be considered as statistically sound.

    The study indicated development in pupils’ learning and understanding of mathematics. In an attempt to pursue the main aim of this study, traditional teaching and cooperative learning were used as teaching techniques for pupils to study the development of their learning. After each teaching method, tests were used to identify the results of the analysis. The results indicated progression in the pupils’ learning by using cooperative teaching. Teachers are encouraged to further investigate cooperative learning techniques in their lessons as it potentially can increase pupils’ learning. More research is needed to establish a correlation between the use of cooperative learning in the teaching of mathematical concepts.

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  • 7.
    Abrahamsson, Sofie
    et al.
    Södertörn University College, School of Communication, Media and it.
    Eriksson, Emelie
    Södertörn University College, School of Communication, Media and it.
    En utvärdering av synthesizern OP-1 utifrån ett användbarhetsperspektiv2010Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This report is based on results given from usability testing of the synthesizer OP-1 developed by the company Teenage Engineering. The study has involved potential end users during the development process and aims only to look at the first experience the user gets from the interaction with the synthesizer. The meaning of the usability tests is to find out how the user can understand how to use OP-1, how intuitive the different modes are and how this affects the initial user experience.

    Nine people, out of a total amount of fourteen asked, participated in these usability tests. The selection of participants is based on their previous knowledge and experience of synthesizers. The theoretical frame of reference includes Jonas Löwgren and Erik Stoltermans theories of use qualities and are combined with chosen parts of Donald Normans ” Seven Stages of Actions as Design Aids”.

    The shown results indicate that the users quickly understand how to use the basic modes and features of the synthesizer. All of the participated users think OP-1 is entertaining, finds the design of OP-1 attractive and appriciates its portability, in which they see potential for both travelling and live performances. The users do not always fully understand the graphical elements but reckon that it is not always necessary to, neither in the display, nor on the buttons, since this clearifies after further usage. The users show some difficulties interacting with functions such as the pattern sequencer and some editing in tape mode. The users also sometimes show difficulties determining which mode the synthesizer is in.

    All of the usability tests were performed on a pre beta version of the OP-1. The final version of the synthesizer has been updated with changes influenced by the results of this report.

     

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  • 8.
    Aburto, J.
    et al.
    Universidad Católica del Norte (UCN), Coquimbo, Chile.
    Gallardo Fernández, Gloria L.
    Uppsala universitet.
    Stotz, W.
    Universidad Católica del Norte (UCN), Coquimbo, Chile.
    Cerda, C.
    Universidad Católica del Norte (UCN), Coquimbo, Chile.
    Mondaca-Schachermayer, C.
    Universidad Católica del Norte (UCN), Coquimbo, Chile.
    Vera, K.
    Universidad Católica del Norte (UCN), Coquimbo, Chile.
    Territorial user rights for artisanal fisheries in Chile: intended and unintended outcomes2013In: Ocean and Coastal Management, ISSN 0964-5691, E-ISSN 1873-524X, Vol. 71, p. 284-295Article in journal (Refereed)
    Abstract [en]

    Granting property property rights in fisheries is assumed to provide incentives for sustainable resource exploitation. These rights might also open other income options for fishers, including some that go beyond the original objectives intended by authorities establishing the right. The opportunity for alternative uses is especially high if the details of these rights are not clearly identified. In Chile, a de novo TURF (Territorial User Rights for Fishery) system, called Management Exploitation Areas for Benthic Resources (Areas de Manejo y Explotacion de Recursos Bentonicos-AMERB) was created to achieve sustainable exploitation of benthic resources. This study compares two small-scale fishing communities in Chile, Guayacan and Huentelauquen, representing two typical contrasting settings, regarding geographical contexts and surroundings, origin, history, location, social embeddedness, main fisheries activities as well as the motivation and the process through which they acquired their AMERB. While in Guayacan the main fishing activity outside the AMERB is the giant squid and finfish fishery, in Huentelauquen the main and traditional activity has been diving for benthic resources. The objectives to acquire their AMERBs were different in both cases. Huentelauquen applied the AMERB for their traditional activity, the fishery of Concholepas concholepas ("loco"), thus in accordance with the official objective of the AMERB. Due to reduced catches of loco, fishers also added the collection of kelps, using their AMERB to control access to the entire coast surrounding their fishing community, beyond the limits of their AMERB. In Guayacan the AMERB, applied for the management of scallops and a species of red algae, began to be used for sea squirt aquaculture. Within the framework of sustainable fisheries implied by the AMERBs, there was in both cases a clear expectation to gain new sources of income. However with time both AMERBs are being used as a tool for territorial exclusion of other fishers beyond the limits of their respective AMERBs. In Huentelauquen fishers mention mostly negative aspects about the performance of their AMERB, given the poor economic results, being unsatisfied with the AMERB system in general, because they feel that the system disrupted their traditional migration along the coast. In Guayacan, fishers mentioned mostly positive aspects for their AMERB, as it was an opportunity to add new activities. Both examples show that rights-based management approaches are very attractive; they could promote new uses or developments, whose sustainability nevertheless needs to be analyzed further. The analyzed case studies show that, contrary to how the system was developed in Chile, a more bottom-up implementation of new management arrangements may make it easier to agree on common objectives, and/or leave more freedom for fishers to adjust and arrange their livelihood. Considering the importance the AMERBs have acquired for fishers, these kinds of systems need flexible regulations in order that fishers can adapt the system to local traditions, uses or needs and also to their learning and adapting capacities.

  • 9.
    Abyan, Najah
    et al.
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies, Development Studies.
    Petersen, Caroline
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies, Development Studies.
    Scrutinizing local views of the role of education in relation to western mainstream views: a case-study from Tanzania2023Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This case study was conducted to give an in-depth analysis of the local stakeholder’s views on the role of education in Babati, Tanzania. The goal is to investigate differences and similarities between the views in Babati and mainstream western views, exemplified by the theory of Martha Nussbaum and Amartya Sen while being attentive to gender and socioeconomic differences. The purpose of this study is to examine local stakeholders' views, mainly guardians and educators on the role of education and to relate these to western mainstream views. The study results have been achieved with the help of the fieldwork executed in Babati, Tanzania where interviews and observations were made. 

    Previous literature emphasizes that education is considered necessary for enabling problem-solving, and fostering individual and societal advancements. Further, education is declared to be a right for all on the justification that it works to strengthen the respect of human rights, fundamental freedom and the development of human personality. Despite the consensus on the importance of education, the role of education remains complex and differs across contexts and socioeconomic groups, including gender and socioeconomic differences. 

    The quality, access, and attitudes to education in Tanzania have changed during recent years. These changes resonate with, among other things, higher enrollment, increased number of schools, educators with higher qualifications, and food served at school. The results show that education is perceived as central in the widely agreed upon quest to shape children into “good people” and that lead “good lives”. Although there are obstacles that hinder people from achieving these outcomes and reaching their fullest potential. 

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    Scrutinizing local views of the role of education in relation to western mainstream views: a case-study from Tanzania
  • 10.
    Acar, Nathalie
    Södertörn University, Teacher Education.
    ”Rektangel – En avlång fyrkant, som formen av en fotbollsplan”: En kvalitativ studie om språket lärare använder i sin matematikundervisning i årskurs 4-62020Independent thesis Advanced level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The purpose of this study is to investigate how teachers use everyday language in parallel with school language to support students to develop their language in mathematics in 4-6 th grade.

    To examine this, three research questions were formulated:

    • How do teachers use everyday language and school language in teaching mathematics?
    • In what way do teachers support students to develop their mathematical scientific language in teaching mathematics?
    • What type of interaction is given the opportunity in teaching mathematics for students to be able to develop their mathematical school language?

    To collect data for the study, four qualitative observations were performed of four different teachers av two different schools. Each observation was then followed by a qualitative interview.

    The result of the study indicates that teacher often use the everyday language to explain the school language for the students. Teachers also use different scaffolding methods as word explanations, asking questions or use student’s previous knowledge to support students to develop their mathematical scientific language. Finally, the result of the study shows that the students were given interaction with the teacher, interaction with each other but also individual learning to develop the mathematical school language.

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  • 11.
    Acaralp, Damla
    Södertörn University, Teacher Education.
    Hållbar utveckling i undervisningen: En kvalitativ studie om lärare och lärarstudenters syn på hållbar utveckling i undervisningen2015Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The issue for this study is how teachers and teacher students understand the concept of sustainable development and work and want to work with sustainable development in their education. The aim is to provide knowledge that can lead to a better implementation of sustainable development in education. The study has a phenomenological perspective and is based on the concept of sustainable development and theories of education for sustainable development. The study consists of interviews with four teachers who act as primary teachers and four teacher students who study on the last semester of their education. The study shows that all respondents think that sustainable development is a concept that is difficult to interpret and that they have a distorted interpretation of the concept. All are focusing on environmental protection and overlook economic and social development. That is particularly apparent in their examples of how sustainable development should be implemented in teaching. The study also shows that the teacher students have a more complete picture of the concept of sustainable development and, unlike the teachers, explicitly states that sustainable development should permeate the entire teaching.

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  • 12. Adamsson, I
    et al.
    Edlund, Charlotta
    Södertörn University, Avdelning Naturvetenskap.
    Seensalu, R
    Engstrand, L
    The use of AP-PCR and flaA-RFLP typing to investigate treatment failure in Helicobacter pylori infection2000In: Clinical Microbiology and Infection, ISSN 1198-743X, E-ISSN 1469-0691, Vol. 6, no 5, p. 265-267Article in journal (Refereed)
  • 13. Aeluri, Madhu
    et al.
    Gaddam, Jagan
    Trinath, Devarakonda V. K. S.
    Chandrasekar, Gayathri
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies.
    Kitambi, Satish Srinivas
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies. Karolinska institutet.
    Arya, Prabhat
    An Intramolecular Heck Approach To Obtain 17-Membered Macrocyclic Diversity and the Identification of an Antiangiogenesis Agent from a Zebrafish Assay2013In: European Journal of Organic Chemistry, ISSN 1434-193X, E-ISSN 1099-0690, no 19, p. 3955-3958Article in journal (Refereed)
    Abstract [en]

    We report a practical and modular approach to obtain two different types of 17-membered ring macrocyclic compounds through an intramolecular Heck reaction. These macrocyclic compounds are functionalized, that is, they contain two contiguous stereogenic hydroxy functional groups and an amino acid moiety in the macrocyclic ring skeleton. The macrocycles were then screened against a zebrafish assay to determine the antiangiogenesis activity of these small molecules. Macrocyclic compound 2.2a was identified as a potent inhibitor at 2.5 M, whereas its acyclic precursor and the other related macrocyclic compounds did not show any effect.

  • 14. Aeluri, Madhu
    et al.
    Pramanik, Chinmoy
    Chetia, Lakshindra
    Mallurwar, Naveen Kumar
    Balasubramanian, Sridhar
    Chandrasekar, Gayathri
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies.
    Kitambi, Satish Srinivas
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies. Karolinska Institute.
    Arya, Prabhat
    14-Membered Macrocyclic Ring-Derived Toolbox: The Identification of Small Molecule Inhibitors of Angiogenesis and Early Embryo Development in Zebrafish Assay2013In: Organic Letters, ISSN 1523-7060, E-ISSN 1523-7052, Vol. 15, no 3, p. 436-439Article in journal (Other academic)
    Abstract [en]

    A highly practical and modular synthesis to obtain a diverse 14-membered ring-based macrocyclic toolbox is achieved. These compounds were further tested in zebrafish assays related to early embryonic development, angiogenesis, and neurogenesis, respectively. 1.4c was Identified as an antiangiogenesis agent.

  • 15. Agianian, Bogos
    et al.
    Lesch, Christine
    Loseva, Olga
    Dushay, Mitchell S.
    Södertörn University, School of Life Sciences. Uppsala University.
    Preliminary characterization of hemolymph coagulation in Anopheles gambiae larvae2007In: Developmental and Comparative Immunology, ISSN 0145-305X, E-ISSN 1879-0089, Vol. 31, no 9, p. 879-888Article in journal (Refereed)
    Abstract [en]

    Hemolymph coagulation is a first response to injury, impeding infection, and ending bleeding. Little is known about its molecular basis in insects, but clotting factors have been identified in the fruit fly Drosophila melanogaster. Here, we have begun to study coagulation in the aquatic larvae of the malaria vector mosquito Anopheles gambiae using methods developed for Drosophila. A delicate clot was seen by light microscopy, and pullout and proteomic analysis identified phenoloxidase and apolipophorin-I as major candidate clotting factors. Electron microscopic analysis confirmed clot formation and revealed it contains fine molecular sheets, most likely a result of lipophorin assembly. Phenoloxidase appears to be more critical in clot formation in Anopheles than in Drosophila. The Anopheles larval clot thus differs in formation, structure, and composition from the clot in Drosophila, confirming the need to study coagulation in different insect species to learn more about its evolution and adaptation to different lifestyles.

  • 16. Agvald-Öhman, C
    et al.
    Wernerman, J
    Nord, C E
    Edlund, Charlotta
    Södertörn University, Avdelning Naturvetenskap.
    Anaerobic bacteria commonly colonize the lower airways of intubated ICU patients2003In: Clinical Microbiology and Infection, ISSN 1198-743X, E-ISSN 1469-0691, Vol. 9, no 5, p. 397-405Article in journal (Refereed)
    Abstract [en]

    Objectives To investigate respiratory tract colonization by aerobic and anaerobic bacteria in mechanically ventilated patients. Methods Bacterial colonization of the stomach and the respiratory tract was qualitatively and quantitatively analyzed over time in 41 consecutive mechanically ventilated patients in a Swedish intensive care unit (ICU), with special emphasis on elucidation of the role of anaerobic bacteria in the lower respiratory tract. Samples were taken from the oropharynx, gastric juice, subglottic space and trachea within 24 h (median 14 h) of intubation, and then every third day until day 18 and every fifth day until day 33. Results The patients were often heavily colonized with microorganisms not considered to belong to a healthy normal oropharyngeal and gastric flora on admission to the ICU. A majority harbored enterococci, coagulase-negative staphylococci and Candida spp. in at least one site on day 1. Anaerobic bacteria, mainly peptostreptococci and Prevotella spp., were isolated from subglottic and/or tracheal secretions in 59% of the patients. Different routes of tracheal colonization for different groups of microorganisms were found. Primary or concomitant colonization of the oropharynx with staphylococci, enterococci, enterobacteria and Candida was often seen, while Pseudomonas spp., other non-fermenting Gram-negative rods and several anaerobic species often primarily colonized the trachea, indicating exogenous or direct gastrointestinal routes of colonization. Conclusions Mechanically ventilated patients were heavily colonized in their lower airways by potential pathogenic microorganisms, including a high load of anaerobic bacteria. Different routes of colonization were shown for different species.

  • 17.
    Ahammad, Shamim
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies.
    Importance of Training in Hotel industry2013Independent thesis Advanced level (degree of Master (One Year)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    The highly competitive environment in which businesses operate today requires a skilful workforce in every organisation in order to remain a successful player in the competitive game of the industry. One of the main problems which occur in the workplace is the lack of training. A large number of employees can appear dissatisfied (Heinemann and Greenberger, 2002) due to being assigned responsibilities without-having the right knowledge and skills in that area. Training is an essential process which should be cautiously designed and implemented within all firms. The overall aim of this dissertation is to assess the importance of training- in work field.For many years now human capital has been regarded as vital for the efficient functioning of an organisation because of its contribution in improving productivity, business performance and economic growth (Schultz, 1961). Therefore it is important to invest in human resources through training (Lucas, 1988) in order to improve the competitive position of the firm, and because of the enhanced quality, innovation, continual increased productivity and in turn improved profitability that can be achieved through this (Taylor and Davies, 2004).Throughout this research the training system in Hilton Hotel will be examined and appropriate recommendations for a more effective training system will be given where appropriate. The overall aim of this study is to assess the importance of training in hospitality industry.

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  • 18.
    Ahammed, Riday
    et al.
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies.
    Osheko, Yannick
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies.
    Vad ska vägleda dig i en 3D-labyrint?: En kvalitativ studie av spår, ljud och markeringar som vägledningshjälpmedel2022Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    There are different types of wayfinding aids that help the player navigate through a 3D environment. This qualitative study investigates how breadcrumb trails, sounds, and markers as wayfinding aids can support a player in a 3D maze. First, the researchers created a prototype to examine the three wayfinding aids and placed them into three different mazes. Then, the respondents who participated in the study played through those three mazes with and without wayfinding aids to investigate how they supported the respondents during the game session. Next, data were collected using the stimulated recall method and semi-structured interviews. Finally, the collected data were analyzed using the Empirical phenomenological psychology (EPP) method. The results that occurred from the analysis showed the respondent's individual experiences and the four overall themes that emerged from the data. In summary, the results indicated that breadcrumb trails were the most optimal wayfinding aid. However, both sound and markers shared the same characteristics as wayfinding aids. In addition, the respondents developed spatial memory with the help of unique landmarks and used other wayfinding strategies when the wayfinding aids were unavailable.

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  • 19.
    Ahlbäck, Marcus
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies, Environmental Science.
    Förnybara energikällor i media2018Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    To combat the rising global temperature Sweden have signed the Paris Agreement to limit the release of CO2 and keep the temperature to a minimum increase of 1,5 degrees. A transformation of today’s energy system towards renewable energy is paramount to this endeavour, which in part relies on public acceptance where media plays an important role inshaping public acceptance. This study aims to map acceptance of renewable energy sources and draws on framing theory, which states that the media focuses attention on certain events and gives information meaning, in a sense how something is presented to the audience influences their choices in how to process said information. As this is a qualitative study, 49 articles about bio-, geothermal, solar, water and wind energy from Sweden’s four major newspapers, Aftonbladet, Dagens Nyheter, Expressen and Svenska Dagbladet, have been gathered from the Svenska dagstidningar database and examined through frame analysis. Media framing contributing to public acceptance was bio- and solar energy while water subtracted from it. Wind energy were both contributing and subtracting from acceptance while geothermal lacked articles entirely, prohibiting it from entering public discourse altogether. Meanwhile the biggest deciding factor towards framing acceptance for renewable energy depended largely on the newspaper.

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  • 20.
    Ahlgren Andersson, Ellen
    et al.
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies.
    Enecker, Maria
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies.
    Alice and the Mad Hater: Hur sociala medier påverkar och möjliggör användares motstrategier vid bemötande av kränkande innehåll2015Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    With online communication being increasingly integrated with our everyday lives, internet hate has become a growing problem. This is receiving growing attention in the media and research. In recent years, scientists have begun to shift their focus from the hate itself, to responses to these forms of violation. However, research has been mainly solution orientated and for example focused on legal aspects. Thus, we maintain that the field lacks a media technology based analysis, which this paper intends to contribute to. The aim of this study is to investigate what impact design and functionality in social media has on its users, with relation to user’s counter-strategies on the reception of offensive content. Note that this study is restricted to social media, and not focused on digital media at large. Within the framework of this essay, we have conducted three focus-group interviews and nethnographic studies. The empirical data from our focus groups has determined which social media platforms we examined in the nethnographic study, and subsequently in our analysis. The collected data has been analysed in relation to previous research on social media and internet hate. We have also used theories on resistance, suppression techniques, space of possible actions, norms and the relationship between offline/online and front stage/back stage. The analysis has resulted in five themes that describe the following key findings: 1) social media's positive connotations are problematic in relation to offensive content, but the receivers of internet hate are inventive in working around embedded norms, 2) sometimes no response is the best defence, 3) the culture around the like-function has a significant role in the resistance to internet hate on social media, 4) the shrinking distance between the world online and offline, as well as public and private rooms, affects everyday resistance to violations on social media, and 5) production of positive content and interaction with help of built-in functions are perceived as ways to affect the climate and cooperative resistance. We do not purport to provide technical or design-related proposals for development. However, we believe that our results, among other things, can be used for future development and improvement of social media platforms, and as a basis for further research on resistance to violations on social media.

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    AliceandtheMadHater_Ahlgren-Andersson_Enecker
  • 21.
    Ahlgren Andersson, Ellen
    et al.
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies.
    Enecker, Maria
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies.
    Design Thinking och Fyrstegaren: En jämförande studie om två människocentrerade designprocesser2016Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Design Thinking is a prototype-driven, solution-based and human-centered innovation approach and design process that has been receiving a growing amount of attention in both the industry and research during the last decade. In this paper we intend to evaluate Design Thinking in relation to the in-house design process of the digital transformation agency Mogul AB. Their process, called the Four Step Model, was developed by the design team as a result of years of experience and evaluation of best-practice. The aim of our study is to compare Design Thinking’s initial phases Empathize and Define to the corresponding strategy phase in the Four Step Model. Using this comparison we aim to evaluate in what way Design Thinking could be integrated in the Mogul’s Four Step Model in order to obtain a more human-centered process and result. This study is based on a) research on Design Thinking and human-centered design processes b) interviews with representatives from Mogul's design team, and c) documentation from our own work process, producing a recruitment site for Mogul, where we used Design thinking as our working method. Our study shows that Mogul's design process would benefit from integrating a number of tools and mindsets from Design Thinking. Our key findings suggest that the Four Step Model should be more iterative and include the end user in an extended degree during the whole design process, and especially during the initial stages of the process. The Four Step Model would also benefit from more tangible tools for obtaining a deeper understanding of the end user’s needs. By embracing these mindsets from Design Thinking, the Four Step Model could become more useful, efficient and human-centered.

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  • 22.
    Ahlgren, Anna
    Södertörn University, Teacher Education.
    Har bilden en mening?: En studie om illustrerad multiplikation2018Independent thesis Advanced level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Illustrated pictures play an important role as mediators of mathematical concepts and relations in mathematical textbooks used in Swedish primary school classrooms. Theories of the meaning of semiotics for teaching and learning, as well as the Variation theory of learning, are used as a framework to investigate the critical aspects for developing multiplicative reasoning through visual presentations. In this study143 students in 3rd grade (age 9-10) participated in a test where multiplication is represented with illustrations, using both additive and multiplicative groupings. The students were also instructed to draw multiplication expressions with various visual supports. Students’ responses were analyzed by quantifying groupings based on the multiplication expressions students identify, as well as the extend of which they use additive and multiplicative visual representations and support in their own drawings. Results show indications of different properties of multiplication that can be presented in illustrations. How teacher knowledge can be used to identify the critical aspects for learning multiplication is here discussed, leading to suggestions regarding ways is which textbook pictures can be useful tools in teaching and learning.

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  • 23.
    Ahlgren, Anna
    Södertörn University, Teacher Education.
    Målande multiplikation: En undersökning av hur multiplikation illustreras i läroböcker för årskurs två2018Independent thesis Basic level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This study examines how illustrations are used to introduce the concept of multiplication in Swedish mathematics textbooks intended for use with 2nd grade students. The aim is to find out how instructions and tasks are supported by illustrations by using a sociocultural perspective on learning with focus of mediating artifacts. The findings are compared to research in the field of mathematics didactics, where the importance of teaching multiplicative structures to primary school students is emphasized. With a method that categorize illustrations, insight is gained into how well they connect to the subject content, and in addition if they show additive or multiplicative multiplication. This study also looks into the extent that students are being instructed and encouraged to illustrate their answers to the textbook assignments. Results from the analyses of four 2nd grade mathematics textbook series, show that illustrations are used to a large extent to support text and numbers in introducing multiplication, but that all books contain pictures that contradict the subject content. The results also show that the majority of the illustrations demonstrate multiplication as repeated addition. Furthermore, this study suggests that when students are encouraged to draw pictures themselves, they are in most cases not given support and instructions to draw multiplicative multiplication. Based on earlier research within this field, as well as the findings of this study, it is argued that the dominant focus on repeated addition in illustrations can trap students in patterns of additive reasoning. This can interfere with their perception and comprehension of multiplication structure, and lead to limitations of students’ further development and understanding of mathematic concepts.

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  • 24.
    Ahlström, Sofia
    et al.
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies.
    Hansson, Sofie
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies.
    Teknik och design som motstrategi till sexuella trakasserier online: En kvalitativ studie av erfarenheter och lösningar på sexuella trakasserier online utifrån ett användarperspektiv2017Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Digital platforms such as social media are big part of people's everyday life and social network. Recent studies shows that the ability to act anonymously on social media has increased harassment behaviors online. For marginalized groups, digital platforms are important for the act of freedom of speech and harassments online can limit these groups in the digital environment. Within the framework of this study we found, that there is a lack of studies that specifically research sexual harassments online and what different factors that may have an impact on the problem. Therefore, the aim for this study was to research what values, attitudes and emotions users of social media services experiences online. We wanted to research, from a user perspective, what existing counter-strategies options are provided on social media against sexual harassments online, and if there are other technical design solutions for social media interfaces. Within the framework of this essay we have conducted a focus group interview and a participatory design workshop. The empirical data that was collected has been analysed with different theories such as power, resistance, empowerment in design, master suppression techniques in social media, feminist HCI and social norms and participatory design. The study also use previous research on harassment on social media to further understand the empirical data for the analysis. In this study there are findings from the focus group that has been placed in three different themes. 1) The importance of social relationships for counter-strategies against sexual harassment online. 2) Social norms and normalization of sexual harassment online. 3) The importance of technical aspects for dealing with sexual harassment online. Our study shows that the counter-strategies options on social media services today are not sufficient enough for these different aspects. The participatory design workshop in this study resulted in eight possible technical design solutions. These solutions can be implications for design on social media interfaces and can work as counter-strategy tools against sexual harassments online. This study only research one focus group, therefore the study can be used as a basis for further research. By including users with participatory design methods, values made from users of social media in relation to sexual harassments online can unfold and hopefully decrease the problem.

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  • 25.
    Ahmed Omran, Zahraa
    Södertörn University, Teacher Education.
    Språkutvecklande matematikundervisning inom problemlösning2019Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
  • 26. Ahnström, G.
    et al.
    Nygren, Jonas
    Södertörn University, Avdelning Naturvetenskap. Karlinska Instiutet.
    Eriksson, S.
    The effect of dimethyl sulphoxide on the induction and repair of double-strand breaks in human cells after irradiation with γ-rays and accelerated ions: Rapid or slow repair may depend on accessibility of breaks in chromatin of different compactness2000In: International Journal of Radiation Biology, ISSN 0955-3002, E-ISSN 1362-3095, Vol. 76, no 4, p. 533-538Article in journal (Refereed)
    Abstract [en]

    Purpose: The repair of double-strand breaks (dsb) in mammalian cells is characterized by a rapid phase with a half-life of less than half an hour and a slower phase that lasts for many hours. The proportion of slow repair increase with LET and it has been suggested that the slow repair component consists of more complex damage and is more deleterious to the cells. To see if removal of OH radicals could remove part of the damage in complex dsb and make them easier to repair, human cells were irradiated in the presence of dimethyl sulphoxide (DMSO). Methods: Induction and repair of dsb were studied by neutral elution in human VH10 cells exposed to γ-rays, helium ions (mean LET 40 keV/μm) and 80 and 125 keV/μm monoenergetic nitrogen ions in the presence and absence of 2 M DMSO. Results: Incubation of cells exposed to γ-rays, 40 keV/μm helium and 80 keV/μm N ions demonstrated that scavenging of OH radicals by DMSO removed most of the rapid repair component. The response to DMSO was less marked after 125 keV/μm nitrogen ions, where about half of the repair was resistant to DMSO. Conclusions: It is unlikely that the complexity of dsb is responsible for the slow repair because the removal of OH radicals did not make the breaks easier to repair. Instead, it is suggested that rapid and slow repair can be explained on the basis of how different parts of the chromatin are accessible to repair enzymes.

  • 27.
    Aitova, Diana
    et al.
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies, Tourism Studies.
    Tuulasvirta, Jennifer
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies, Tourism Studies.
    Svenska researrangörers marknad och konkurrensstrategier innan pandemin samt deras planer för tiden efter pandemin: - En kvalitativ studie över pandemins påverkan på turistbranschen och researrangörernas strategiska arbete2021Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Problem: In this study, tour operators' perceptions of market changes linked to the pandemic have been investigated. Based on their perceptions, the most effective competition strategies have been described both before and after the pandemic.

    Aim: The study's intention was to gain an understanding of how Swedish tour operators experience changes in the tourism industry linked to Covid-19 and what competition strategies the companies use before and plan to use after the pandemic.

    Method: The study uses a qualitative research strategy with an inductive approach and grounded theory as a method. The collected data material has been analyzed mainly by in-depth interviews which were then transcribed and coded from Glaser’s point of view, containing open, selective, and theoretical phase. This resulted in two core categories that expressed the study's main problems: competition strategies and the tourism industry and competition in Sweden.

    Conclusion: The study results have shown that the most effective competition strategies according to Swedish tour operators are customer orientation, vertical integration, and digitalization. Regarding perceptions of market changes, respondents believe that there have been no major changes in the tour operator market, but the pandemic has affected the tourism industry and competition in general, where market demand and competition between other industries have changed. In addition, the competition strategies used by companies before the pandemic were effective and provide competitive advantages, which results in that these strategies will be largely unchanged after the pandemic. 

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  • 28.
    Akrawi, Narin
    et al.
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies.
    Ciechowicz, Michelle
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies.
    Fotbollsturism: En studie om fotbollsturisters upplevelse och tillfredställelse2016Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This is a study made by two students for their bachelor theses in Tourism at Södertörn University, Sweden. The study investigates weather the theoretical characteristic features of a sport tourist is inconsistent with reality. The study also investigates factors that sport tourist consider important during a football trip to achieve a satisfying experience. By identifying specific element of the phenomenon increase knowledge and development of sport tourism. The method chosen for the study was qualitative interviews which where performed with twenty respondents, each respondent travel to Lisbon, Portugal to attend the quarter- finals of Champions League between SL Benfica and FC Bayer München, 13 April 2016. The interview material was interpreted and later merges with previous research and theories in order to investigate and identify the phenomenon. The result of the study showed that the theoretical and previous research that have been presented on characteristic features of a sport tourist do not or partly match the respondents in this study. This study also showed that factors that sport tourist consider important as e.g. good seats, security, transport, good company, good atmosphere, other supporters and supporting their favourite football team, are the factors that contribute and makes a satisfying, memorable and positive experience trip.

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  • 29.
    Akrawi, Narin
    et al.
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies.
    Ciechowicz, Michelle
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies.
    Företag på Facebook: En studie om företagskommunikation på Facebook2016Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This paper present a study where the case of the study is to examine how a selection of Swedish companies with a similar number of followers on Facebook can achieve an effective communication through a two-way communication with there followers. A survey to see which technical solutions Swedish companies need to achieve an effective communication. The main purpose is to examine how these companies work to achieve an effective two-way communication with their followers on the selected company's Facebook page.

    Furthermore, the effects that caused by the means of communication and the technical solutions and how they are involved in the process. That constitutes of functions that Facebook provides in terms of share, like, comment and tag. The research is based on a content analysis of six Swedish companies' Facebook pages, that are linked to theories that are related to areas of Facebook, communication, interaction and eWOM. Which late in the paper will be compiled into a conclusion.

    The study resulted in various forms of communication and interaction on account of the selected company's activity, purpose and on the company's adaptation after their business.

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  • 30.
    Al Latteef, Worood
    et al.
    Södertörn University, Teacher Education.
    Asmar, Angela
    Södertörn University, Teacher Education.
    Begreppsförståelse inom Naturorienterande ämnen: En studie om lärares arbetsmetoder som främjar begreppsförståelse och stödjer elever med språklig sårbarhet i årskurs 1–32023Independent thesis Advanced level (professional degree), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The purpose of this study is to examine, from a teacher's perspective, the methods teachers employ to promote conceptual understanding and provide support for pupils with linguistic vulnerability in natural sciences. To fulfill this purpose, two research questions were formulated; What teaching methods teachers use to promote conceptual understanding, and how teachers adapt their instruction to support pupils with linguistic vulnerability. The theoretical framework for the study was based on the sociocultural perspective and the view of differentiated learning. The study was conducted using both quantitative and qualitative approaches through a survey and semi-structured interviews. The results indicated that the teachers that have participated in the study use various teaching methods to promote conceptual understanding. These methods involve hands-on activities, outdoor teaching, field studies, and experiments, as well as discussions based on social interaction. Furthermore, the result indicates that teachers adapt instruction for pupils with linguistic vulnerability by creating a balance between challenge and support through leveled tasks and collaboration with special educators. 

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  • 31.
    Albernaz, Daniel L.
    et al.
    KTH.
    Do-Quang, Minh
    KTH.
    Hermanson, James C.
    University of Washington, Seattle, USA.
    Amberg, Gustav
    KTH.
    Thermodynamics of a real fluid near the critical point in numerical simulations of isotropic turbulence2016In: Physics of fluids, ISSN 1070-6631, E-ISSN 1089-7666, Vol. 28, no 12, article id 125105Article in journal (Refereed)
    Abstract [en]

    We investigate the behavior of a fluid near the critical point by using numerical simulations of weakly compressible three-dimensional isotropic turbulence. Much has been done for a turbulent flow with an ideal gas. The primary focus of this work is to analyze fluctuations of thermodynamic variables (pressure, density, and temperature) when a non-ideal Equation Of State (EOS) is considered. In order to do so, a hybrid lattice Boltzmann scheme is applied to solve the momentum and energy equations. Previously unreported phenomena are revealed as the temperature approaches the critical point. Fluctuations in pressure, density, and temperature increase, followed by changes in their respective probability density functions. Due to the non-linearity of the EOS, it is seen that variances of density and temperature and their respective covariance are equally important close to the critical point. Unlike the ideal EOS case, significant differences in the thermodynamic properties are also observed when the Reynolds number is increased. We also address issues related to the spectral behavior and scaling of density, pressure, temperature, and kinetic energy.

  • 32.
    Albert, Séréna
    et al.
    Stockholm University, Sweden.
    Hedberg, Per
    Stockholm University, Sweden .
    Motwani, Nisha H.
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies, Environmental Science.
    Sjöling, Sara
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies, Environmental Science.
    Winder, Monika
    Stockholm University, Sweden.
    Nascimento, Francisco J A
    Stockholm University, Sweden.
    Phytoplankton settling quality has a subtle but significant effect on sediment microeukaryotic and bacterial communities2021In: Scientific Reports, E-ISSN 2045-2322, Vol. 11, no 1, article id 24033Article in journal (Refereed)
    Abstract [en]

    In coastal aphotic sediments, organic matter (OM) input from phytoplankton is the primary food resource for benthic organisms. Current observations from temperate ecosystems like the Baltic Sea report a decline in spring bloom diatoms, while summer cyanobacteria blooms are becoming more frequent and intense. These climate-driven changes in phytoplankton communities may in turn have important consequences for benthic biodiversity and ecosystem functions, but such questions are not yet sufficiently explored experimentally. Here, in a 4-week experiment, we investigated the response of microeukaryotic and bacterial communities to different types of OM inputs comprising five ratios of two common phytoplankton species in the Baltic Sea, the diatom Skeletonema marinoi and filamentous cyanobacterium Nodularia spumigena. Metabarcoding analyses on 16S and 18S ribosomal RNA (rRNA) at the experiment termination revealed subtle but significant changes in diversity and community composition of microeukaryotes in response to settling OM quality. Sediment bacteria were less affected, although we observed a clear effect on denitrification gene expression (nirS and nosZ), which was positively correlated with increasing proportions of cyanobacteria. Altogether, these results suggest that future changes in OM input to the seafloor may have important effects on both the composition and function of microbenthic communities.

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  • 33.
    Aldén, Nina
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies.
    Is A Holistic Approach Relevant for Non-Governmental Organizations’ Agricultural Extension Strategies?: Case Studies from Tanzania2016Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Agricultural extension can play a major part in the development and adoption of sustainable agriculture practices. Local NGOs have a unique opportunity to serve as extension agents due to their acceptance and close relationship in communities. The paper argues that agricultural extension needs to adopt a holistic approach to the communities’ development to achieve a lasting and sustainable agriculture. This study examines four NGOs in Tanzania to see 1) how they provide extension services; 2) if they have a holistic approach; and 3) if the holistic approach is a conscious strategy. The findings show that a mixture of extension methods is commonly used by all four of the NGOs. More over the NGOs offer a wide variety of projects, which focus on different issues. This results in a holistic approach, even though this probably is rather a result of funding practices than a conscious extension strategy.

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    Is A Holistic Approach Relevant for Non-Governmental Organizations’ Agricultural Extension Strategies?
  • 34.
    Alexandersson, Viktor
    et al.
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies.
    Faber, Adrian
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies.
    Kritisk design i en digital videoproduktion: En explorativ studie i praktisk tillämpning av kritisk design2013Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Critical design is a research- and innovationarea under development. The critical design theory has been used in many design-related areas and intends to get consumers to become more critical when it comes to how their everyday lives are controlled by different beliefs, values, ideologies and behavioral patterns that are incorporated into design (Dunne & Raby, 2001). Since critical design is a theory that seeks to transform in practice the challenge today lies in creating practical examples that show how it can be done, which is a necessity for the theory to develop (Bardzell et al., 2012). This study intends to be method developing by creating a set of tools based on selected parts (theoretical methods and perspectives) from critical design. The goal of these tools are to function as an instrument enabling practical implementation of critical design in a design/production process. In this study we have tested our tools in a specific productionprocess of a music video to explore how to apply critical design practically. In doing so we used design-oriented research methods, in particular Daniel Fällmans triangelmodel for interactiondesign and design research (2008). By bringing together critical design perspectives and video production purposes, this study hopes to make a contribution to the method fulfilling work of bridging the existing gap between theory and practice in critical design. 

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    Kritisk design i en digital videoproduktion
  • 35.
    Alhabboby, Hany
    et al.
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies, Media Technology.
    Hussain, Faiyaz
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies, Media Technology.
    Hallå främling, låt oss samarbeta: En kvalitativ studie av hur anonyma spelare bemöter varandra på Counter Strike2016Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The purpose of this study was to investigate how anonymous online players treat each other in the game environment in Counter Strike (CS GO), where the way they communicate can affect other people's gaming experience through cheating or "griefing". We have also sought to examine how issues of anonymity affected player's experiences. Data was collected through the use of qualitative methods, such as semi-structured interviews and non-participant observations. Ten respondents participated in the interviews, five women and five men who had played Counter Strike for at least two years. The questions which they were asked related to attitudes, communication, gaming experience, trust, behavior, cheaters and griefers inCounter Strike.

    The results were analyzed with the help of previous research and theory related to the problem of our study. The results showed that the anonymous players responded to each other positively or negatively depending on various factors such as performance, gender, experience, communication and trust. Positive attitudes gave a positive gaming experience that increased the teamwork and changed the anonymity to friendship, while negative attitudes gave negative gameplay experience that made players lose the desire to play for awhile, because they had high expectations of others.

    In order to improve Counter Strike for anonymous players, we recommend that the game company improves its security, by blocking cheaters and griefers faster than they do at present, by changing blocking of a cheater from only a blocked account to a whole computersystem, and by making the game more expensive. We also recommend applying region or country functions when they people play anonymously to avoid linguistic misunderstandings and to ease communication by ensuring that players from the same country play with eachother and speak a common language.

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  • 36.
    Alheim, Katarina
    et al.
    Södertörn University, Avdelning Naturvetenskap. Karolinska Institutet.
    Corness, J
    Samuelsson, M K R
    Bladh, L G
    Murata, T
    Nilsson, T
    Okret, S
    Identification of a functional glucocorticoid response element in the promoter of the cylcin-dependant kinase inhibitor p57(Kip2)2003In: Journal of Molecular Endocrinology, ISSN 0952-5041, E-ISSN 1479-6813, Vol. 30, no 3, p. 359-368Article in journal (Refereed)
    Abstract [en]

    Glucocorticoids are known regulators of the cell cycle, normally exerting an anti-proliferative effect. We have previously shown that glucocorticoids stimulate expression of p57(Kip2), a member of the Cip/Kip family of cyclin-dependent kinase inhibitors which, in some cell types, may account for the anti-proliferative responses seen after glucocorticoid treatment. The induction of p57(Kip2) involves primary transcriptional effects where no de novo protein synthesis is necessary, suggesting a direct interaction of the glucocorticoid receptor with the p57(Kip2) gene. In this study we have identified a functional glucocorticoid response element (GRE), located 5 kilo bases (kb) upstream of the transcription start site in the human P57(Kip2) promoter. This GRE was functional also when isolated, suggesting a direct transcriptional effect of the glucocorticoid receptor. Furthermore, mutation of this GRE abolished glucocorticoid induction of the reporter gene, whereas mutation of a nearby Sp1 site did not. Using electrophoretic mobility shift assays, we have shown that the -5 kb p57(Kip2) promoter GRE was able to compete with a well-known GRE for glucocorticoid receptor binding. Sequence comparisons with the mouse genome showed that this GRE is highly conserved, further strengthening the biological importance of this site. All these data emphasize the involvement of this GRE in the glucocorticoid-mediated induction of p57(Kip2) expression.

  • 37.
    Alhouaidy, Zahra
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies.
    Att sprida upphovsrättsligt skyddat material på YouTube: Om användarnas motivation att ladda upp upphovsrättsskyddat material2012Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Ett av de mest populära community:n på internet och en av världens mest populärastewebbplats i dag är videotjänsten YouTube. Strömmande tjänster blir alltmer efterfrågade i taktmed att tekniken utvecklas och bandbreddens prestationsförmåga inte längre är en begränsning.Inte minst har strömmande tjänster, i synnerhet YouTube, blivit populärt på grund av desskopierade innehåll av användare, i motsats till det egenskapade. Många av de uppladdadevideoklippen är upphovsrättsskyddade och just sådana videoklipp har visat sig tendera att varasärskilt efterfrågade bland användarna.I den här uppsatsen tittar jag på användarnas beteenden på YouTube i form av en observationnär de laddar upp upphovsrättsskyddat material. Jag undersöker hur användare ställer sig tillupphovsrätten och de regler som råder på YouTube genom en enkätundersökning. Slutligenintervjuar jag två advokater specialiserade inom området för att ta del av deras professionellasynsätt. Uppsatsen presenterar de observerade användarstrategierna och reflektionerna.

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  • 38.
    Alhouaidy, Zahra
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies.
    En elektronisk portfolio: Designprinciper, metoder och ett förslag av en e-portfolio som komplement till CV2013Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [sv]

    Denna rapport redovisar utvecklingen av en elektronisk portfolio som är avsedd att användas av personer verksamma inom eller med inriktning mot IT-branschen, till exempel webbutvecklare. Syftet med e-portfolion är att den skall representera en persons kunskaper och kompetens med hjälp av publicerat material som kan tänkas vara intressant för arbetsgivare. Tanken är att e-portfolion skall fungera som komplement till CV och personligt brev. För utvecklingen av e-portfolion har jag utnyttjat olika designprinciper och riktlinjer. Märkspråket HTML, CSS samt skriptspråken PHP och JavaScript har använts. Målet var att utveckla ett fullt fungerande förslag på en e-portfolio, designad för ett visst ändamål och strukturerad med olika typer av innehåll. Resultatet blev ett komplett förslag på en e-portfolio i form av en webbsida.

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  • 39.
    Ali, Fuad
    Södertörn University College, School of Life Sciences.
    Developing electroporation as a method to obtain Stable Transformation in Drosophila melanogaster2008Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
    Abstract [en]

    In this project I have tried to obtain stable transformants of Drosophila melanogaster flies using electroporation. I have completed approximately 200 tests using different DNA concentrations, voltages and cuvettes, including a novel Petri dish cuvette which I developed and manufactured myself. I also developed new and more efficient procedures of egg collection and egg dechorionation. Although I was not  successful in obtaining true stable transformants, control experiments indicate that electroporation of DNA into embryos could be accomplished under the conditions used. The lack of stable transformants was probably due to failure of the electroporated DNA to integrate into the host genome. The reasons for why the DNA did not integrate was not further investigated in this study.

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  • 40.
    Aliyu, Habibu
    et al.
    Centre for Microbial Ecology and Genomics, University of Pretoria, Pretoria, South Africa.
    De Maayer, Pieter
    School of Molecular and Cell Biology, University of the Witwatersrand, Johannesburg, South Africa.
    Sjöling, Sara
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies, Environmental Science.
    Cowan, Donald A.
    Centre for Microbial Ecology and Genomics, University of Pretoria, Pretoria, South Africa.
    Metagenomic Analysis of Low-Temperature Environments2017In: Psychrophiles: From Biodiversity to Biotechnology / [ed] Rosa Margesin, Cham: Springer, 2017, p. 389-421Chapter in book (Refereed)
    Abstract [en]

    The Earth’s permanently cold biosphere is known to harbour abundant microbial biomass and represents a rich resource for the discovery of novel cold-adapted microorganisms, many of which form part of the ‘microbial dark matter’ which cannot be analysed using traditional culture-dependent approaches. The recent development of metagenomics and related multi-omics strategies has provided a means by which entire microbial communities can be studied directly, without the prerequisite of culturing. The advancement of the ‘omic’ methods is directly linked to recent progress in high-throughput sequencing, robust data processing capabilities and the application of cutting-edge analytical tools for high-throughput detection of biomolecules. The combined application of these tools and strategies has provided an unprecedented access to the structure and potential function of microbial communities in cold environments, providing increasingly comprehensive insights into the taxonomic richness and functional capacity of the indigenous microorganisms. Applications of ‘omic’ strategies have enhanced our understanding of psychrophilic adaptation mechanisms, revealing the versatility and adaptability of life in the ‘cryosphere’. In addition to the predicted roles of psychrophiles in biogeochemical cycling, recent multi-omic studies have further emphasised the importance of the ‘cryosphere’ in influencing global atmospheric conditions. Finally, metagenomic bioprospecting of cold environments has yielded a variety of novel bioactive molecules including novel ‘psychrozymes’, with a wide range of potential industrial and biotechnological applications. Here, we have provided an overview of recent developments in metagenomic technologies and their application in the study of the cold biosphere.

  • 41.
    Alkemar, Gunnar
    et al.
    Södertörn University, Avdelning Naturvetenskap. Stockholm Universtiy.
    Nygård, Odd
    Södertörn University, Avdelning Naturvetenskap.
    A possible tertiary rRNA interaction between expansion segments ES3 and ES6 in eukaryotic 40S ribosomal subunits2003In: RNA: A publication of the RNA Society, ISSN 1355-8382, E-ISSN 1469-9001, Vol. 9, no 1, p. 20-24Article in journal (Refereed)
    Abstract [en]

    Eukaryotic 16S-like ribosomal RNAs contain 12 so-called expansion segments, i.e., sequences not included in the RNA secondary structure core common to eubacteria, archaea, and eukarya. Two of these expansion segments, ES3 and ES6, are juxtaposed in the recent three-dimensional model of the eukaryotic 40S ribosomal subunit. We have analyzed ES3 and ES6 sequences from more than 2900 discrete eukaryotic species, for possible sequence complementarity between the two expansion segments. The data show that ES3 and ES6 could interact by forming a helix consisting of seven to nine contiguous base pairs in almost all analyzed species. We, therefore, suggest that ES3 and ES6 form a direct RNA-RNA contact in the ribosome.

  • 42.
    Alkemar, Gunnar
    et al.
    Stockholms universitet, Wenner-Grens institut.
    Nygård, Odd
    Södertörn University, School of Life Sciences.
    Comparative analysis of rRNA sequences from the large ribosomal subunit of more than 900 eukaryotic species reveals structural similarities in expansion segment ES39.Manuscript (preprint) (Other academic)
  • 43.
    Alkemar, Gunnar
    et al.
    Södertörn University, School of Life Sciences. Stockholm University.
    Nygård, Odd
    Södertörn University, School of Life Sciences.
    Probing the secondary structure of expansion segment ES6 in 18S ribosomal RNA2006In: Biochemistry, ISSN 0006-2960, E-ISSN 1520-4995, Vol. 45, no 26, p. 8067-8078Article in journal (Refereed)
    Abstract [en]

    Expansion segment ES6 in 18S ribosomal RNA is, unlike many other expansion segments, present in all eukaryotes. The available data suggest that ES6 is located on the surface of the small ribosomal subunit. Here we have analyzed the secondary structure of the complete ES6 sequence in intact ribosomes from three eukaryotes, wheat, yeast, and mouse, representing different eukaryotic kingdoms. The availability of the ES6 sequence for modification and cleavage by structure sensitive chemicals and enzymatic reagents was analyzed by primer extension and gel electrophoresis on an ABI 377 automated DNA sequencer. The experimental results were used to restrict the number of possible secondary structure models of ES6 generated by the folding software MFOLD. The modification data obtained from the three experimental organisms were very similar despite the sequence variation. Consequently, similar secondary structure models were obtained for the ES6 sequence in wheat, yeast, and mouse ribosomes. A comparison of sequence data from more than 6000 eukaryotes showed that similar structural elements could also be formed in other organisms. The comparative analysis also showed that the extent of compensatory base changes in the suggested helices was low. The in situ structure analysis was complemented by a secondary structure analysis of wheat ES6 transcribed and folded in vitro. The obtained modification data indicate that the secondary structure of the in vitro transcribed sequence differs from that observed in the intact ribosome. These results suggest that chaperones, ribosomal proteins, and/or tertiary rRNA interactions could be involved in the in vivo folding of ES6.

  • 44.
    Alkemar, Gunnar
    et al.
    Södertörn University, School of Chemistry, Biology, Geography and Environmental Science. Stockholm University.
    Nygård, Odd
    Södertörn University, School of Chemistry, Biology, Geography and Environmental Science.
    Secondary structure of two regions in expansion segments ES3 and ES6 with the potential of forming a tertiary interaction in eukaryotic 40S ribosomal subunits2004In: RNA: A publication of the RNA Society, ISSN 1355-8382, E-ISSN 1469-9001, Vol. 10, no 3, p. 403-411Article in journal (Refereed)
    Abstract [en]

    The 18S rRNA of the small eukaryotic ribosomal subunit contains several expansion segments. Electron microscopy data indicate that two of the largest expansion segments are juxtaposed in intact 40S subunits, and data from phylogenetic sequence comparisons indicate that these two expansion segments contain complementary sequences that could form a direct tertiary interaction on the ribosome. We have investigated the secondary structure of the two expansion segments in the region around the putative tertiary interaction. Ribosomes from yeast, wheat, and mouse-three organisms representing separate eukaryotic kingdoms-were isolated, and the structure of ES3 and part of the ES6 region were analyzed using the single-strand-specific chemical reagents CMCT and DMS and the double-strand-specific ribonuclease V1. The modification patterns were analyzed by primer extension and gel electrophoresis on an ABI 377 automated DNA sequencer. The investigated sequences were relatively exposed to chemical and enzymatic modification. This is in line with their indicated location on the surface at the solvent side of the subunit. The complementary ES3 and ES6 sequences were clearly inaccessible to single-strand modification, but available for cleavage by double-strand-specific RNase V1. The results are compatible with a direct helical interaction between bases in ES3 and ES6. Almost identical results were obtained with ribosomes from the three organisms investigated.

  • 45.
    Almgren, Kajsa
    Södertörn University, Teacher Education.
    Kokboksundersökningar i naturvetenskapliga läromedel: En läromedelsanalys av hur många och vilka typer av laborativa aktiviteter som framställs i olika naturvetenskapliga läromedel2022Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    In this study, the aim has been to investigate how different educational materials in the nature science subjects are designed with the intention of how many and what types of laboratory activities the pupils will encounter to contextualize the abstract nature of science to develop their understanding of the content and working methods of science. In order for the pupils to have the opportunity to develop a scientific understanding, it is necessary that they have the opportunity to use their senses to interpret the text that is presented to them. Through various sensual, experimental, and practical activities, pupils can gain an understanding of the abstract phenomena, concepts, and explanatory models of natural science. In today's schools, there are many teachers who use educational materials as their point of departure when teaching science. Educational materials have an important role in science teaching, but depending on how the educational materials are designed, they provide different conditions for learning. In this study, the number of laboratory activities, that appear in different educational materials for science teaching, is investigated, as well as whether these laboratory activities are designed in terms of their degree of freedom and openness. The following questions have been addressed in order to achieve the purpose of the study:

    - How many laboratory activities can be found in the various educational materials?-  Are there more laboratory activities in any of the three nature-oriented subjects, biology, physics, or chemistry?

    - What types of laboratory activities do the pupils encounter in the educational materials and what degree of openness and freedom do they include?

    The investigation has been carried out through a qualitative and quantitative text and content analysis where various educational materials have been analyzed based on the context-based learning (CBL) theory and the theory of laboratory classification. The results of the qualitative and quantitative text and content analysis showed that certain educational materials give the pupils more opportunities to connect the scientific content to real experiences. The results also showed that some educational materials have a greater variety of different laboratory forms where the pupils have the opportunity to develop an understanding of the different working methods and content of the natural sciences. The conclusion that can be drawn after this study is therefore that it is important that teachers carefully review the various2educational materials to gain insight into their design. Through insight into the design of the educational materials, the teacher can then supplement the educational materials with, for example, laboratories of varying degrees of openness and freedom to give the pupils the opportunity to fulfill the goals in the curriculum.

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  • 46.
    Almgren, Olivia
    et al.
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies.
    Hoang, Kit Yan
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies.
    Medvetenhet kring informationssäkerhet på internet: En kvantitativ jämförelse mellan Sverige och Israel2017Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    The increasing amount of information on the internet entails an increasing need for privacy protection. Information security is becoming a vital part of everyday lives due to digitization. There has been relatively little research on information security awareness, especially from a cultural, age- and knowledge perspective. This study aims to examine and to gain knowledge about information security awareness of users and their view of privacy online. By replicating the method of an israeli research paper by Halperin and Dror (2016), a comparison between Israel and Sweden is possible. Data were collected through surveys and the results show differences and similarities between Sweden and Israel. In particular when looking at age and knowledge. 

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  • 47.
    Alnebratt, Karl
    et al.
    Södertörn University College, School of Communication, Media and it.
    Dalesjö, Gustav
    Södertörn University College, School of Communication, Media and it.
    Designprincipers applicerbarhet på domänen streamad-TV2009Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    In our study, we investigated how the streamed TV domain relates to existing design principles for web design. Further, we have investigated whether there are specific characteristics of the domain that the design principles do not cover. In the survey we have studied two sites which are representative of the streamed TV domain. Finally, we discuss how applicable the design principles are for the domain and the specific characteristics that would require new or further developed design principles.

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  • 48. Alonzo, Frederic
    et al.
    Hertel-Aas, T.
    Gilek, Michael
    Södertörn University, School of Life Sciences.
    Gilbin, R.
    Oughton, D. H.
    Garnier-Laplace, J.
    Modelling the propagation of effects of chronic exposure to ionising radiation from individuals to populations2008In: Journal of Environmental Radioactivity, ISSN 0265-931X, E-ISSN 1879-1700, Vol. 99, no 9, p. 1464-1473Article in journal (Refereed)
    Abstract [en]

    This study evaluated the potential effect of ionising radiation on population growth using simple population models and parameter values derived from chronic exposure experiments in two invertebrate species with contrasting life-history strategies. In the earthworm Eisenia fetida, models predicted increasing delay in population growth with increasing gamma dose rate (up to 0.6 generation times at 11 mGy h(-1)). Population extinction was predicted at 43 mGy h(-1). In the microcrustacean Daphnia magna, models predicted increasing delay in population growth with increasing alpha dose rate (up to 0.8 generation times at 15.0 mGy h(-1)), only after two successive generations were exposed. The study examined population effects of changes in different individual endpoints (including survival, number of offspring produced and time to first reproduction). Models showed that the two species did not respond equally to equivalent levels of change, the fast growing daphnids being more susceptible to reduction in fecundity or delay in reproduction than the slow growing earthworms. This suggested that susceptibility of a population to ionising radiation cannot be considered independent of the species' life history.

  • 49.
    AlRashidi, Monif
    et al.
    University of Ha’il, Saudi Arabia.
    Abdelgadir, Mohanad
    Södertörn University, School of Natural Sciences, Technology and Environmental Studies, Environmental Science.
    Shobrak, Mohammed
    Taif University, Saudi Arabia.
    Habitat selection by the Spiny-tailed lizard (Uromastyx aegyptia): A view from spatial analysis2021In: Saudi Journal of Biological Sciences, ISSN 1319-562X, Vol. 28, no 9, p. 5034-5041Article in journal (Refereed)
    Abstract [en]

    Many factors affect the habitat selection for animal species, which in turn may greatly affect their distribution in different ecosystems. Understanding the processes that affect habitat selection is also critical for guiding and managing conservation initiatives. Our study aimed to assess the habitat selection by free-ranging Spiny-tailed lizard (Uromastyx aegyptia) by analyzing a geospatial data connecting its burrow parameters to different habitat characteristics within selected sites in Hail region, Saudi Arabia. We examined evidence and patterns of significant spatial clustering for (366) active burrows by linking their parameters (burrow entrance size, burrow entrance width and burrow entrance height), their reference geographical locations and, two habitat characteristics defined by soil type and vegetation cover. The objective of the analysis was to increase the understanding on the burrows aggregation process in the space and, to describe its possible relation to other spatial habitat configurations. Analysis of distances based on the Nearest Neighbor Index (NNI) and hotspots detection in Nearest neighbor hierarchical clustering (Nnh) suggested twelve (12) spatial clusters located within the study area. In addition, a spatial ordinary least square (OLS) and Poisson regression models revealed significant effects of soil type and vegetation cover on burrow parameters (OLS, p < 0.05; Poisson, p < 0.001), which indicate a strong association between burrows parameters and habitats characteristics. Findings from the study also suggest that other factors such as elevations, highways, and human settlement concentration spots could possibly play a major role in defining burrow spatial aggregation and furthermore have a significant impact on habitat selection.

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  • 50.
    Altemark, Mikael
    Södertörn University College, School of Culture and Communication.
    Lexis, Discourse Prosodies and the Taking of Stance: A Corpus Study of the Meaning of ‘Self-proclaimed’2011Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    This study is concerned with the description of the semantic and pragmatic characteristics of the attributive adjective self-proclaimed, employing corpus-linguistic methodology to explore its meaning from user-based data. The initial query provided the material from which a lexical pro-file of the target word was constructed, systematically describing collocational data, semantic preferences, semantic associations and discourse prosodies. Qualitative analysis of sample con-cordances illustrated the role of the target word in expressing different kinds of meaning-bearing stances. The results demonstrate the importance of context and communicative functionality as constraints determining meaning, determining the discourse prosodies of self-proclaimed as one of either negation; accepted-positive and accepted-negative. Further, the analysis of self-proclaimed as a stance marker indicates the linking evaluative meanings of extended lexical units to the project of linguistic description of intersubjective stancetaking as a possibly fruitful venue for research

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    Lexis, Discourse Prosodies and the Taking of Stance: A Corpus Study of the Meaning of ‘Self-proclaimed’
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