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1213 Uppsatser om Scientific computing - Sida 3 av 81

Scientific collaboration kartläggning av ett tvärvetenskapligt forskningsområde inom biblioteks- och informationsvetenskap

The aim of this thesis is to map the research area of scientific collaboration within Library and Information Science LIS. The purpose is to find out who is doing research in this area, who they cite and if they get cited by other scientists outside of LIS. Scientific collaboration is an interdisciplinary research area with researchers from different disciplines such as LIS, human-computer interaction, psychology and sociology. We have concentrated our study to North America, Ireland, Great Britain and Scandinavia. In order to find researchers, we visited the websites of all universities with library and information science faculties in the chosen countries.

Molnet och dess användning i stora organisationer

IT-­?världenssenasteochmestomtaladefenomen,molnet,harmöjlighetattrevolutioneraIT-­?användningen.Attuppfattadetsomattmolnetbaraärettnyttordfördetgamlafenomenetoutsourcingtrorjagärettmisstag.MolnetinnebärsnarareattoutsourcingnuharnåttenmognaddärföretagenkantastegetövertillattköpaITiformavtjänstersomlevererasöverInternet.Trotskostnadsbesparingarnaharanvändningenintetagitfartdåföretagarnablandannatäroroligaförhursäkramolntjänsternaär.Denhärstudiensyftartillattgeföretagenvägledningförbeslutominköpavmolntjänster.Förattskapaenbättreförståelseförvadmolntjänsterärharenkartläggningavmarknadenochenanalysavfenomenetgenomförts.EnundersökningavorganisationersanvändningavochsynpådessatjänsterharutförtsgenomintervjuermedIT-­?experterfråntiostorasvenskaföretag.Detfinnsettstortochväxandeantalmolnleverantörerpåmarknadensomerbjudertjänsteravallatänkbaraslag.Trotsdettabegränsasstorasvenskaorganisationersmolnanvändningtilliförstahandsmåickeverksamhetskritiskatjänster.Dettaberorframföralltpåenoroförattmolnleverantörernaskahabristandesäkerhet.Iverklighetenärdettroligtattmolnleverantörernaharbättresäkerhetänföretageniallmänhetharidagochdetdärförbaraärentidsfrågainnanmolnleverantörernakommerattkunnaövertygaomattdemötersäkerhetskraven.Framtidenförmolnetsergodutdådeflestaföretagpågrundavkostnadsbesparingargårmotmermolnanvändning.Detäroklartnärmolnanvändningentarfartpåallvar,menmedstörstasannolikhetkommerdenattökadrastisktsåfortmolnleverantörernaetableratsigochlyckatsvisaattdemöterkravenförsäkerhet,integrationochtillförlitlighet.MolnetsframfartkommerattinnebärastoraförändringarförIT-­?verksamhetendåITintelängreutvecklasellerförvaltasinternt.AllteftersomdebefintligaIT-­?systemenblirförlegadekommerföretagarnaattersättademmednya,bättreochbilligaremolntjänster..

Chalmers oanvända datorkraft - Distribuering av arbete och energihantering med HTCondor

Chalmers University of Technology today have numerous computers which are never powereddown, at the same time there is a need for more computation power for researchers.Hence, we have investigated the possibility to use the computers for computing power andsecondly, if there is no work to be done, to put them into power saving mode.We have made a thorough study where we compared different distributing systems andin the end HTCondor was chosen as the best to implement. HTCondor is an excellent systemfor opportunistic use of computing power, i.e. make use of computers that no one elseis currently using. The system is used at several universities around the world with goodresults and would be excellent at Chalmers, where there is a need for such a system.Our implementation shows that HTCondor is well capable of handling unused computingpower. HTCondor can handle most file types that may be run on the system.

Ägandeskap av data i molnet - En studie om företags attityder och resonemang kring ägandeskap när de placerar sin data i molntjänster

Cloud computing has become a very publicized and popular concept in recent years, both in business literature and research, where data ownership is the security aspect which has usually been ranked the highest of the disadvantages that can be identified with cloud services. Today there is a lack of research on information ownership from an informatics perspective, as it is most often discussed from a legal perspective.In our study we interviewed six different companies that use cloud services, on which attitudes and reasoning they had on their information ownership. We compared these attitudes with the attitudes we identified in business literature and research on the subject. In business literature we found four recurring themes which were very clear about how a company should govern information ownership.Overall the results of our interviews showed that there is widespread ignorance at the companies on how information ownership in the cloud is regulated between the company and the cloud provider. All companies expressed that they had not experienced any change in ownership when they placed their data in the cloud, and they expressed no major concerns about how the ownership was handled.

Tillit och misstro till molntjänster : Identifiering av vilka kriterier som skapar tillit till molntjänster

Cloud computing innebär att datorkraft och IT-resurser i form av servrar, lagring och lokala nätverk görs tillgängliga via internet, cloud computing har ökat snabbt i användning de senaste åren. Möjligheterna med molntjänster har lett till nya utmaningar avseende tillit till molntjänster genom att öppna för helt nya förhållanden mellan leverantör och kund. I dagsläget så är tillit till molntjänsterna ett stort problem för kunder såsom mikroföretag samt små och medelstora företag.Vårt examensarbete syftar till att beskriva mikroföretags samt små och medelstora företags tillit och misstro till molntjänster, samt identifiera vilka kriterier som bidrar till detta. Resultatet visar att det är svårt att tydligt definiera tillit och misstro hos företag, då deras situationer och verksamheter skiljer sig. Tack vare vår litteraturstudie i kombination med våra intervjuer har vi skapat oss en bra bild av vilka kriterier som bidrar med tillit och misstro till molntjänster.

Användandet av ickesanktionerade molnapplikationer inom svenska organisationer

Molnapplikationer som DropBox har under de senaste åren blivit allt mer populära ocherbjuder anställda möjligheten att kunna kommunicera och dela filer mellan varandra.För att få en förståelse för hur icke-sanktionerade molnapplikationer användspåbörjades en undersökning för att identifiera risker och möjligheter för svenskaorganisationer.Denna uppsats genomfördes med en kvalitativ ansats och inleddes med enlitteraturstudie som följdes av nio stycken intervjuer med personer som har erfarenhetav IT-infrastruktur och Cloud Computing. Resultatet indikerade att IT är intressant förorganisationer där man önskar ha en bättre kontroll över kostnader och resurser samtkunna förändra vid behov. Om organisationer inte implementerar en policy för huricke-sanktionerade molnapplikationer ska hanteras kan anställda välja att skapa sinaegna regler och att man därför tappar kontrollen över data.Genom att analysera och se över sina nuvarande behov kan organisationer behållakontrollen över data, samtidigt som man undviker att det blir dyrare och kan minskakostnader samt skala sina resurser beroende på behov.Exempelvis kan framtida forskning vara att man undersöker hur användningsscenariotser ut på arbetsplatsen kontra hemma och vad det är för typ av resurser som behövsinom organisationen..

Hur agerar pedagoger utomhus? : En studie i förhållningssätt till barn i förskolan och deras utemiljö.

The following essay or thesis is a study over scientific endeavors in the fringe. It is a study of Riksorganisationen UFO-Sverige, whose proponents aim to make the UFO phenomenon (or phenomena) a subject of scientific scrutiny. To achieve this, the ufologists first have to redefine common concepts of ufology as pseudo science or religion, mainly by challenging definitions given by scientific sceptics on the one hand, and proponents of conspiracy theories or the new age environment on the other. Thus UFO-Sverige seeks to construct an alternative scientific identity in contrast to adversaries on both sides, each unwilling to give the UFO phenomenon any further examination. Following the work of Tomas Gieryn's sociological grip on questions of epistemology, especially concerning the social boundaries of science from other cultural categories through what has been labelled as epistemic boundary work, during which proponents of a particular field aim to achieve epistemic authority and thus the legitimate right to define what is and what is not science, I seek to analyze how questions of science and legitimacy are actualized in an intellectual environment or culture not broadly accepted as scientific.

Elevers föreställningar om liv : undersökning av elevers lärande ur ett socialkonstruktivistiskt perspektiv

The purpose with this study was to analyse students' conception of living things, and to establish how a social constructivist learning situation affect their conceptions. The method consisted of questionnaires, followed by group discussions and a final survey. The main result was that students have everyday conceptions about scientific phenomena that are reinforced by the social interaction. Some students were positively influenced by the interaction with their peers, where non-scientific conceptions were replaced by conceptions of a scientific nature. Furthermore, the cultural artifacts are of very good means, but the study showed a strong need for a knowledgeable person, e.g.a teacher, to guide students in the right direction during the discussions.

Den tredje vägens ufologi : En studie av vetenskapligt gränsdragningsarbete inom Riksorganisationen UFO-Sverige

The following essay or thesis is a study over scientific endeavors in the fringe. It is a study of Riksorganisationen UFO-Sverige, whose proponents aim to make the UFO phenomenon (or phenomena) a subject of scientific scrutiny. To achieve this, the ufologists first have to redefine common concepts of ufology as pseudo science or religion, mainly by challenging definitions given by scientific sceptics on the one hand, and proponents of conspiracy theories or the new age environment on the other. Thus UFO-Sverige seeks to construct an alternative scientific identity in contrast to adversaries on both sides, each unwilling to give the UFO phenomenon any further examination. Following the work of Tomas Gieryn's sociological grip on questions of epistemology, especially concerning the social boundaries of science from other cultural categories through what has been labelled as epistemic boundary work, during which proponents of a particular field aim to achieve epistemic authority and thus the legitimate right to define what is and what is not science, I seek to analyze how questions of science and legitimacy are actualized in an intellectual environment or culture not broadly accepted as scientific.

Efficient treatment of adolescents with behavioural problems

The purpose of this essay is to investigate which components previous scientific studies suggest that an efficient treatment for adolescents with behavioural problems should contain. For this purpose, an extensive review of scientific research conducted in Scandinavia has been read and will be presented in this essay. This essay also present an introduction to residential care in Sweden as well as to an alternative form of treatment for adolescents with behavioural problems called Multidimensional Treatment Foster Care (MTFC). The result of this essay suggest that treatment of adolescents with behavioural problems should be based on the emphasis of risk/resilience factors of the youth and that the treatment should be adapted to the youth?s individual personality and way of learning.

Vetenskaplig publicering ? om publiceringsstrategier under 1800-talet med fokus på historieämnet

The aim of this master thesis is to show how the dissemination of scientific information took place and developed during the 19th century. The main focus is Lund University. Therefore I have formulated two questions: How did the five heads of the history department at Lund University publish their research findings in the 19th century? What factors in society influenced the scientific spreading of results in the 19th century? To assess the scientific reliability of the sources I have used a method based on source criticism and hermeneutics. The thesis covers important concepts such as the exchange of publications between the universities, commercium litterarium and Akademischer Tauschverein and also the development of Lund University yearbook.

Träning och manuell behandling för att minska impingementliknande symptom i skuldran hos idrottare? : En systematisk litteraturstudie

AimThe purpose of this study is to investigate whether there is scientific evidence that exercise and/or manual therapy can improve function, in terms of increased mobility and strength on shoulder impingement-like symptoms among athletes. Another aim is to investigate whether these interventions can reduce shoulder pain.MethodA systematic review was conducted in the databases PubMed, CINAHL, PEDro and Amed. A total of thirteen articles were selected for further review and compilation. They were then graded for level of evidence according to the PEDro scale and the Swedish Council on Technology Assessment (SBU).ResultsThe systematic review shows that there is strong scientific evidence that acupuncture and heat can reduce pain in athletes diagnosed with supraspinatus-tendiopathy. There is limited scientific evidence that exercise increases strength, limited scientific evidence that stretching increases mobility and insufficient scientific evidence that a combination of treatments, with both exercise and stretching, reduces pain and increases function in overhead athletes.ConclusionsExercise and manual therapy can reduce pain and/or improve function in terms of increased mobility and strength in athletes with shoulder impingement-like symptoms.

Hälsofrämjande ur ett folkhälsoperspektiv : - en litteraturstudie

Today is one of the reasons that Sweden works for improved public health to reduce the incidence of the most common diseases. The eleven objectives are the key determinants of public health work and are thus assigned as the common positions for players to work towards the same goal. The purpose of this study was to examine which aspects of health promotion in Sweden examined in the scientific articles. The method is a literature review based on scientific articles. Searches have been conducted in the databases SAGE Journals Online, ASSIA and Cinahl.

Vetenskaplig kommunikation i förändring: en fallstudie av ett svenskt forskningsbiblioteks beståndsutveckling

For hundreds of years the scientific journals has been the foremost tool for scholarly communication. Publishing of research results is very important for scientists. Often the research is bound to the university and the research libraries supplies the scientist with all journals needed. The last decades the libraries have seen the costs for subscriptions to journals explode. Commercial publishers often lie behind the mostly unmotivated escalation in price.

Industriforskning och informationssökning: en användarstudie av en grupp forskare vid ABB Corporate Research

The thesis aims at, from a user perspective, examining how a group of industrial researchers understand the information seeking in their every day work. A qualitative method is employed. The empirical material consists of open-ended interviews with in all ten researchers. All of them work at the Swiss-Swedish Technology Company ABB's research laboratory in Västerås. The thesis is based on the opinion that the scientific knowledge production has become commercialised and that the scientific communication is going through certain changes.

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