Teses / dissertações sobre o tema "Resonsa"
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Ambrose, Nicola. "Investigation of the abberent immune resonse in Behçet Syndrome". Thesis, Imperial College London, 2013. http://hdl.handle.net/10044/1/30784.
Texto completo da fonteLacaze, Paul Andrew. "Systems analysis of the dynamic macrophage response to productive and non-productive murine cytomegalovirus infection". Thesis, University of Edinburgh, 2011. http://hdl.handle.net/1842/5555.
Texto completo da fonteEspling, Elin, e Rune Lindgren. "Resonera muntligt inom matematiken : Fyra faktorer som påverkar elevens utveckling av resonemangsförmågan". Thesis, Högskolan i Halmstad, Akademin för lärande, humaniora och samhälle, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-36314.
Texto completo da fonteSidenvall, Johan. "Att lära sig resonera : Om elevers möjligheter att lära sig matematiska resonemang". Licentiate thesis, Linköpings universitet, Institutionen för samhälls- och välfärdsstudier, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-117759.
Texto completo da fonteElever kan bara lära sig de det de får möjlighet att lära sig. Detta innebär till exempel att elever inte utvecklar sin resonemangs- och problemlösningsförmåga i någon större utsträckning om inte deras undervisning fokuserar på just dessa förmågor. Forskning, nationellt och internationellt visar att det finns en överbetoning på utantillinlärning och på procedurer. Detta verkar ske på bekostnad av en konceptuell förståelse, trots att det under 20 års tid pekats på behovet av en reforminriktad matematikundervisning. Matematisk förståelse kan delas in i procedurell- och konceptuell förståelse där en konceptuell förståelse kan kopplas till en reforminriktad matematikundervisning. Genom att utveckla förmågan att resonera matematiskt utvecklas också den konceptuella förståelsen. Denna avhandling, som inbegriper tre studier (med empiri från gymnasiet år ett och matematikläroböcker från tolv länder) behandlar elevers möjlighet att lära sig att resonera matematiskt. Dessa möjligheter har studerats utifrån att undersöka vilka möjligheter läroboken ger att lära sig matematiska resonemang, dels via en läroboksanalys och dels genom att studera elevers arbete med läroboksuppgifter i klassrumsmiljö. Elevers möjligheter att lära sig att resonera matematiskt har också studerats genom att undersöka relationen mellan elevers matematiska resonemang och deras uppfattningar om matematik. Ett analytiskt ramverk (Lithner, 2008) har används för att kategorisera och analysera resonemang som använts för att lösa uppgifter och som behövs för att lösa en uppgift. Resultaten från studierna har givit stöd åt tidigare forskning vad gäller att undervisning och läroböckerna inte nödvändigtvis harmonierar med en reforminriktad matematikundervisning. Och att elever har uppfattningar om matematik som bygger på osäkerhet, förväntan på ämnet och sin egen förmåga samt motivation och att dessa uppfattningar delvis kan kopplas till att eleverna inte använder matematiska resonemang för att försöka lösa icke-rutinuppgifter. Det vanligaste sättet att lösa läroboksuppgifter var att välja andra strategier än att använda sig av matematiska resonemang. Ett vanligt sätt att lösa uppgifter var att låta sig guidas, av främst en annan elev. Eleverna arbetade framförallt med de enklare uppgifterna i läroböckerna. Bland dessa enklare uppgifter var det mer sällsynt med uppgifter som krävde matematiska resonemang för att lösas relativt de svårare uppgifterna. Resultaten visade även att det fanns en negativ relation mellan en uppfattning av osäkerhet hos elever och ett användande av matematiska resonemang. Resultaten visade vidare att fördelningen av uppgifter som krävde matematiska resonemang var relativt lika i alla undersökta läroböcker från fem världsdelar. Utifrån resultaten argumenteras för en förändrad undervisning mot en undersökande undervisning och läroböcker som är mer i harmoni med en reforminriktad matematikundervisning.
McGill, Michael T. "An Investigation of Unidimensional Testing Procedures under Latent Trait Theory using Principal Component Analysis". Diss., Virginia Tech, 2009. http://hdl.handle.net/10919/29699.
Texto completo da fontePh. D.
Stevanovic, Indira. "Lärarens undervisningsstrategier för att stödja elevers möjligheter till att resonera kreativt i matematik". Thesis, Mälardalens högskola, Akademin för utbildning, kultur och kommunikation, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-44813.
Texto completo da fonteMoragues, Jean. "Analyse, étude cinétique et transformations structurales de resols : : relations structures-propriétés". Lyon, INSA, 1994. http://www.theses.fr/1994ISAL0035.
Texto completo da fonteThe aim of this work is to establish structure properties relationships for acid-catalysed phenolic resins (Resol). The polymerisation kinetics followed by NMR13c in both liquid and solid state showed the evolution of the methylol's functions and methylene bridge. Within this range of catalyst amount, the reaction mechanism is of a novolac type. The formation rate of the methylene bridges was ranked as follow p-p ' > o-p > o-o'. The real functionality of the phenol units was found to be 2. 5 in disagreement with the theoritical value of 3. Gelification and vitrification were identified at several temperatures and a TTT (Time-Temperature Transformation) diagram was drawn. The secondary transition representative of the degree of cure (located at -60°C) was highlighted by spectroscopy. The influence of the formol/ phenol ratio and that of the cure and ost cure temperature were studied,The highest fracture strengh was obtained when F/P = 1. 3 at the highest post-cure temperature. Electronic Microscopy showed that this latter result can be explained in terms of damage, essentially due to air voids and water matrix loss during cure schedule
Struglics, Hanna, e Johannes Ljungberg. "Argumentera och resonera - men hur? : En analys av en lärobok i svenska på gymnasiet". Thesis, Malmö universitet, Institutionen för kultur, språk och medier (KSM), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-45317.
Texto completo da fonteBrunskog, Fanny, e Jonna Thilander. "Förmågan att resonera : En kvalitativ undersökning om hur lärare arbetar med resonemangsförmågan inom matematik". Thesis, Linnéuniversitetet, Institutionen för matematik (MA), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-64968.
Texto completo da fonteAmen-Chen, Carlos. "Softwood bark vacuum pyrolysis oils-phenol-formaldehyde resols for bonding oriented strandboard (OSB)". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/NQ57954.pdf.
Texto completo da fonteLindberg, Kajsa, e Alice Sjögren. "‘’Hur kom du fram till det svaret?’’ : En observationsstudie om flickor och pojkars resonemangsförmåga inom matematik i årskurs ett". Thesis, Högskolan i Halmstad, Akademin för lärande, humaniora och samhälle, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-45436.
Texto completo da fonteFernandes, Roland Anthony Savio. "The effects of cultural noise on controlled source electromagnetic resonses of subsurface fractures in resistive terrain". [College Station, Tex. : Texas A&M University, 2008. http://hdl.handle.net/1969.1/ETD-TAMU-2751.
Texto completo da fonteBlomqvist, Daniel. "Hur elever resonerar om geografiska frågor med hjälp av kartor". Thesis, Malmö högskola, Lärarutbildningen (LUT), 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-30091.
Texto completo da fonteBotéus, Michaela, Elin Dalslätt e Elin Söderström. "Föds vi eller görs vi? Pedagogers sätt att tala och resonera kring genus och jämställdhet i förskolan". Thesis, Högskolan i Borås, Institutionen för Pedagogik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-17774.
Texto completo da fonteProgram: Lärarutbildningen
Bogren, Gustav, e Simon Svensson. "Strategier för att resonera proportionellt : En litteraturstudie om elevers val av strategi vid olika typer av proportionalitetsproblem". Thesis, Jönköping University, Högskolan för lärande och kommunikation, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-52323.
Texto completo da fonteBjörk, Jonas. "Att resonera historia utifrån de tre tidsdimensionerna : En studie om hur elever samtalar utifrån en historisk berättelse". Thesis, Karlstads universitet, Institutionen för samhälls- och kulturvetenskap (from 2013), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-68138.
Texto completo da fonteBelaieff, Vera. "Barns mobilitet : En analys av barns skol- och fritidsresor samt det kommunala arbetet kring de respektive resorna". Thesis, KTH, Hållbar utveckling, miljövetenskap och teknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-255892.
Texto completo da fonteJust like adults, children travel regularly in their everyday life. A major part of children’s travels goes to school, but apart from that children also do leisure travels to club activities and leisure facilities. The everyday travel habits of children affect both their health and independence. For this reason, this thesis will embrace children’s mobility and sustainable everyday travels. The aim is to raise the different travel types of children as well as present a basis for continued work within the topic. The study contains of literature research and questionnaires. One of the surveys was made in collaboration with Järfälla municipality. The two questionnaires, one for the students and one for their parents, investigated the travels habits to school and leisure activities for children in Skälbyskolan. Another questionnaire was sent to municipalities in the network of ResSmart. This survey collected information about if and how the municipalities work with children’s school travels and leisure travels, including also the reason why in some cases nothing was done. The result of the surveys showed that walking and cycling are the most common ways of transport to school. Most of the travels was done alone or with other children. Considering the use of bicycle, the use is dependent on the time of the year, where a large proportion cycle in summer but few in winter. To leisure activities, a great majority of the travels are made by car. Because of this, the independence of children’s leisure travel is generally non-existing. The reason why parents drive their children to leisure activities mainly depends on the distance, but also the time of the day in relation to darkness and the general family life. When driving children to school, the main reasons are lack of time and continued travels by car. When comparing Skälbyskolan with Gustav Vasa skola in the downtown of Stockholm, the result showed that walking is to most popular way of travel for both schools. However, neither cycling nor driving was made regularly to Gustav Vasa skola, even if the reasons when actually driving was the same as in Skälbyskolan. Regarding the municipality planning and actions, it is more common that municipalities work with sustainable school travels than children’s leisure travels. Furthermore, the working methods differ, where only physical arrangements are made within leisure travel routes and the lack of mobility management is a fact. With basis in the literature and survey results, action proposals are presented for a developed work within the area. For school travels, the actions should focus on reaching the parents and affecting their choice of mode, as well as actions for easier and more comfortable cycling during winter season. Considering leisure travels is the proposal to copy actions from the work with school travels, where the work should start off with inventions and travel habits surveys in leisure clubs. Furthermore, mobility management actions should be introduced, but also complex and long-term actions including leisure buses for children as well as compact city planning. Finally, the study mean that further work and surveys are needed for continued and developed work with children’s mobility. The area of children’s leisure travels should be raised both in planning documents and information, but also is media and larger forums.
Colliander, Cherine. "Regionala resors effektivitet : En analys och jämförelse av inrikesresors säkerhet, tidsåtgång, kostnad, arbetsmiljö och miljöpåverkan". Thesis, KTH, Flygdynamik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-284370.
Texto completo da fonteThis report is a degree project at the Department of Engineering Mechanics at KTH Royal Institute of Technology in Stockholm. The purpose of this study is to provide a basis for KTH regarding the choice of mode of transportation for regional business travel with regards to time, cost, safety, work environment and environmental impact. Travels between Stockholm and a selection of Swedish cities was carried out for data collection for the study. During these trips the position of the route was recorded, on the basis of which energy consumption and corresponding emissions could be calculated. Vibrations and noise levels were also measured for evaluation of the work environment. In general, it can be concluded that air travel is the fastest. When it comes to cost, carpooling with the maximum number of passengers is the cheapest. For other means of transport, ticket prices vary greatly depending on the demand for a particular route, and it was not possible to draw any conclusions as to whether tickets with one company were cheaper than for another. All examined means of transportation were considered safe to travel with, but car is the least safe of them. Vibration measurements were not performed during air travel, but in general travel by train, car and bus is of particular risk for low-frequency vibrations that can lead to nausea. For the journeys where measurements were carried out, it can be concluded that SJ high-speed train did not show low-frequency oscillations to the same extent as other vehicles, and thus can be assumed to be of lower risk of motion sickness. All means of transportation examined met the Swedish Work Environment Authority’s requirements for noise. Trains and electric cars were the vehicles with the lowest emissions per passenger, provided that the electricity used originated from the common Nordic or Swedish electricity markets. The environmental impact of nuclear waste in connection with the production of nuclear power has not been taken into account in this study. The energy consumption per passenger was in the same order of magnitude for all vehicles examined, but generally lowest for buses. Both emissions and energy consumption per passenger are of course the lowest when the vehicle is travelling with the maximum number of passengers, which was not the case during the completed journeys.
Börjesson, Jennifer, e Karolina Plars. "”När vi planerar för något, då blir det jättebra” : Förskolegården som undervisningsmiljö". Thesis, Högskolan i Borås, Akademin för bibliotek, information, pedagogik och IT, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-25686.
Texto completo da fonteKazemi-Fakhr, Mohammad. "Development of continuous compounded grades of fibre-reinforced composites based on non-acid cure phenolic resols". Thesis, Loughborough University, 1992. https://dspace.lboro.ac.uk/2134/32180.
Texto completo da fonteBerisha, Lendita, e Escobar Jessika Lindhe. ""Det är väldigt många bollar i luften" : - Kvalitativ studie med fokus på hur socialsekreterare resonera kring arbetsbelastningen på deras arbetsplats". Thesis, Högskolan i Halmstad, Akademin för hälsa och välfärd, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-31906.
Texto completo da fonteThe purpose of this study is to investigate which aspects of social secretaries profession in theorganization that they feel contributes to high workloads, how they describe their handling of itand how they possibly improve their work situation and what work factors they perceive asmeaningful and that makes them still work in social services. To answer the purpose of the studywe used a qualitative approach in the form of semi-structured interviews. These interviews havesince been interpreted to find similarities and differences which then has been analyzed usingsociological theories about the organization's role, requirements and control and sense ofcoherence. The study results show that social workers in periods experienced heavy workload.The result also discusses the various strategies that the social workers made use of to be able tohandle this. The results also showed that social workers felt that there are a lot of rewards andthat they still see their work as meaningful. Our conclusion was that the workload does not needto be seen as a problem as long as the cooperation between management and employees worked.
Nelson, Johanna. "Föra och följa matematiska resonemang : En fenomenografisk studie kring lärares uppfattningar av undervisning som utvecklar elevernas förmåga att resonera muntligt". Thesis, Högskolan i Jönköping, Högskolan för lärande och kommunikation, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-40623.
Texto completo da fonteThe importance of communication and reasoning in teaching is clearly explained in the Swedish syllabus for mathematics. The purpose of the study is to visualize teachers' perceptions of teaching that give students in grades 4-6 the opportunity to develop the oral ability to lead and follow mathematical reasoning. Using a qualitative phenomenological approach based on questions about the types of conversations that the teachers describe and how they support the students to develop the ability, 5 semi-structured interviews were conducted. The phenomenological analysis led to two outcome areas, one with 4 description categories for forms of discussion, and another with 8 description categories about support. The conclusion of the result is that the teachers describe several conversational forms used in the classroom and which teachers perceive as beneficial for developing the students' ability. The support given has different functions and all can be considered important, whether used individually or simultaneously.
Bruss, Robert Everett. "Integrating a RESON 7131 forward looking sonar into the REMUS 2500 underwater autonomous vehicle". Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/100146.
Texto completo da fonteCataloged from PDF version of thesis.
Includes bibliographical references (page 75)
With the rapid increase in the availability and capability of robotic technology in the 21st century, unmanned vehicles have started to play a larger role accomplishing mundane, unpleasant, and dangerous tasks around the world. While their operations have not garnered them high visibility in the media, Unmanned Underwater Vehicles (UUVs) are playing an increasingly important role in both private and military operations. This thesis follows the process of integrating an advanced forward looking sonar (FLS) onto an existing UUV to increase object detection, avoidance, and classification capabilities. Conceptualization of the new vehicle hardware utilized computer-aided design to meet design requirements while maintaining all functions of the original vehicle. In order to minimize weight and manufacturing complexity, the structural design was then analyzed and optimized using finite element analysis. After a final design was submitted for review, computational fluid dynamics methods were used to quantify the lift and drag induced on the vehicle by the new FLS nose. This thesis also explores the broader hydrodynamic implications of utilizing angled faces on the nose of torpedo-like UUVs. At the time of publication, the author has submitted the proposed FLS nose integration design for review and for hopeful deployment in the summer of 2015.
by Robert Everett Bruss.
S.M.
Söderberg, Theodor. "Hur kan elever visa på resonemang i ett provformat? : En undersökning om hur elever ges träning i att resonera om hållbar utveckling". Thesis, Uppsala universitet, Kulturgeografiska institutionen, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-374848.
Texto completo da fonteHolmgren, Malin. ""Man kunde höra något nytt och börja tänka annorlunda" : En kvalitativ studie om elevers upplevelser av de fyra mest frekventa metoder som används i etikundervisningen för årskurs 4–6". Thesis, Jönköping University, Högskolan för lärande och kommunikation, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-49870.
Texto completo da fonteThe purpose of this study is to make the pupils experiences of the four most frequent methods according to contemporary research used in the teaching of ethics in religious studies for the grades 4–6. The methods aim to develop the students’ reflection and reasoning ability. To answer the purpose of this study, the method did didactic experiment and as well as focus group interview where five pupils from grade five participated. The study is qualitative and is based on sociocultural theory. The result shows that the pupils chose the four-corner method and conversation as a favourite method. The pupils’ experiences of the other methods were that the method of conversation linked to film was difficult because the clip the students were watching was short and thus it was difficult to get an idea of the character. The ethical dilemma method was appreciated because the pupils preferred having an event to relate to and base on. The pupils felt that it was both positive and negative to hear each other’s thoughts, negative for being able to sit back and just agree but positive for being given new ways of thinking when hearing their friends’ thoughts. When it comes to the pupils experiences regarding which method opened up for reflection and reasoning, the pupils answered the method ethical dilemma.
Christoffersson, Carin. "Resonera mera! : En studie om resonemangsförmågans kvantitativa och kvalitativa betydelse i samhällskunskap för år 4-6, från Lgr 62 till Lgr 11". Thesis, Södertörns högskola, Lärarutbildningen, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:sh:diva-44453.
Texto completo da fonteAndrén, Erik, e Horn Michael von. "Att resonera i minsta möjliga mån : Om den lägsta resultatnivån för betyget G på den skriftliga delen av nationella provet i svenska B". Thesis, Linnaeus University, School of Education, Psychology and Sport Science, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-5748.
Texto completo da fonteHuvudsyftet i föreliggande studie är att undersöka hur elever följer uppgiftsinstruktionernai uppgiften med lägst svårighetsgrad från 2009 års skriftliganationella prov i svenska och svenska som andra språk.I Skolinspektionens rapport Kontrollrättning av nationella prov i grundskolan och gymnasieskolan framkommer att lärare inte bedömer de nationella proven likvärdigt. En av anledningarna till den ickelikvärdiga bedömningen är att tolkningsutrymmet ibedömningsanvisningarna till det nationella provet är alltför stort. Med anledning avdet stora tolkningsutrymmet avser vi att i största möjliga mån ordagrant följabedömningsanvisningarna för nationella provet i svenska och svenska somandraspråk och därigenom precisera anvisningarna. Metod i studien går ut på attavgränsa de lägsta kraven för betyget G utifrån hur de är formulerade i uppgiftsbeskrivningenoch lärarens bedömningsanvisningar. För att konkretiserabedömningsanvisningarna används exempel från elevtexter. Studien visar att det lägsta kravet för betyget G kan delas upp i fyra kriterier somvar för sig kan bedömas och av dessa är kriteriet att resonera svårast att uppfylla. Därmed är det elevens förmåga att resonera som utgör brytpunkten för betyget IGoch G. Studien visar att oavsett omfattning av enskilda uppgiftskriteriers tolkningsutrymmeär det möjligt att identifiera och avgränsa kriterierna för att därigenomsträva efter att varje elevtext bedöms enligt samma måttstock. Tillämpas dettatillvägagångssätt vid elevtextbedömning i allmänhet minskar sannolikt risken förickelikvärdig bedömning, åtminstone inom den egna elevgruppen. En tänkbar åtgärdför att få bukt med ickelikvärdighetsproblematiken som nationella provet i svenskaoch svenska som andraspråk ger upphov till, vore att Skolverkets bedömningsanvisningartillhandahöll definitioner av för uppgifterna centrala begrepp, såsom vaddet innebär att resonera.Huvudsyftet i föreliggande studie är att undersöka hur elever följer uppgiftsinstruktionernai uppgiften med lägst svårighetsgrad från 2009 års skriftliganationella prov i svenska och svenska som andra språk.I Skolinspektionens rapport Kontrollrättning av nationella prov i grundskolan ochgymnasieskolan framkommer att lärare inte bedömer de nationella proven likvärdigt.En av anledningarna till den ickelikvärdiga bedömningen är att tolkningsutrymmet ibedömningsanvisningarna till det nationella provet är alltför stort. Med anledning avdet stora tolkningsutrymmet avser vi att i största möjliga mån ordagrant följabedömningsanvisningarna för nationella provet i svenska och svenska somandraspråk och därigenom precisera anvisningarna. Metod i studien går ut på attavgränsa de lägsta kraven för betyget G utifrån hur de är formulerade i uppgiftsbeskrivningenoch lärarens bedömningsanvisningar. För att konkretisera bedömningsanvisningarna används exempel från elevtexter. Studien visar att det lägsta kravet för betyget G kan delas upp i fyra kriterier somvar för sig kan bedömas och av dessa är kriteriet att resonera svårast att uppfylla. Därmed är det elevens förmåga att resonera som utgör brytpunkten för betyget IG och G.Studien visar att oavsett omfattning av enskilda uppgiftskriteriers tolkningsutrymmeär det möjligt att identifiera och avgränsa kriterierna för att därigenomsträva efter att varje elevtext bedöms enligt samma måttstock. Tillämpas dettatillvägagångssätt vid elevtextbedömning i allmänhet minskar sannolikt risken förickelikvärdig bedömning, åtminstone inom den egna elevgruppen. En tänkbar åtgärdför att få bukt med ickelikvärdighetsproblematiken som nationella provet i svenska och svenska som andraspråk ger upphov till, vore att Skolverkets bedömningsanvisningar tillhandahöll definitioner av för uppgifterna centrala begrepp, såsom vad det innebär att resonera.
Nersäter, Anders. "Att konstruera historiska förklaringar : Vad elever kan behöva lära för att kunna resonera om orsak samt tolka och använda källor inom gymnasieämnet historia". Licentiate thesis, Learning Study - forskarskola för lärare, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-25957.
Texto completo da fonteSköld, Evelina, e Sanna Björklund. "Alla varor som går att göra ekologiska ska vara ekologiska -En studie av hur elever i åk 4 resonerar i konstruerade situationer kring hållbar utveckling". Thesis, Malmö högskola, Lärarutbildningen (LUT), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-33836.
Texto completo da fonteAsh, Hayley. "Assessing the welfare of laboratory-housed marmosets (Callithrix jacchus) : effects of breeding and infant rearing background". Thesis, University of Stirling, 2014. http://hdl.handle.net/1893/21794.
Texto completo da fonteLindo, William, e Josefin Skugge. "Finns det mål och mening med vår färd? : Hur lärare i grundskolan kan beskriva och resonera kring studie- och yrkesvägledning som ett ansvar för hela skolan". Thesis, Stockholms universitet, Institutionen för pedagogik och didaktik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-104200.
Texto completo da fonteThe purpose of the study was to examine how teachers in elementary school think about, and describe how they work with, guidance and counselling within the confines of what the curriculum (Lgr 11) describes as a responsibility of the whole school. The study had a qualitative approach, where interviews with eight teachers in four schools within the county were conducted. The results showed that several of the teachers equated the guidance and counselling with the guidance counselor. Most of the teachers were not aware that they had a responsibility to the school's guidance and counselling, based on current policy documents. It could be said that the teachers felt that the purpose of guidance and counselling was to prepare students for future academic and career choices, although there were differences in how this was expressed and what the work could entail. Lack of time was reported to be an obstacle, and most found it hard to implement guidance and counselling to their subjects. The teachers were mainly influenced by their own experience of guidance and counselling, rather than their perceptions of the area could be attributed to the policy documents, information from the principal or education. The results were analyzed based on the theory of street-level bureaucracy in relation to the concepts of understanding, able and willing. It was found that there was a tremendous variation between teachers in terms of both ideas about the meaning and practical work. The results of the study in conjunction with a twenty year old PhD thesis may indicate that very little may have evolved in terms of teachers' attitude towards guidance and counselling as a whole school approach or responsibility.
Andersson, Josefin, e Gustav Kjellqvist. "”Begåvade elever” : Några pedagogers sätt att resonera om begåvade elever och om de insatser som görs i dagens skola för att de ska utvecklas till sin fulla potential". Thesis, Kristianstad University College, School of Teacher Education, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:hkr:diva-997.
Texto completo da fonteSyftet med studien är att undersöka om begåvade elever i årskurs 1-6 identifieras i dagens skola, vilket stöd de i så fall får, samt även vad som anses vara en begåvad elev. Undersökningen är kvalitativ och som datainsamlingsmetod användes semistrukturerade intervjuer. 3 rektorer och 2 pedagoger intervjuades på 3 olika skolor. Resultatet visar på att alla respondenter ansåg att det var svårt att skapa en uppfattning om vad begåvade elever är, samtliga menade dock att det inte behövde bero på vad eleverna presterade. Vissa respondenter ville inte använda sig av begreppet särskilt begåvad då de ansåg att det var ett negativt laddat ord. Resultatet visar även att, trots att inga åtgärdsprogram finns för de begåvade eleverna, försöker respektive skola och pedagog ge de begåvade eleverna stöd genom att utmana dem på olika sätt samt låta dem utvecklas på sin egen nivå.
Halidi, El Mohamed. "Études RMN et IRM en champ proche : développements et applications". Thesis, Montpellier 2, 2013. http://www.theses.fr/2013MON20261/document.
Texto completo da fonteThe principle of NMR is based on the detection of the magnetization originating from the spin of atomic nuclei such as 13C, 31P and 1H. The sample is placed in a static magnetic field, which polarizes the ensemble of spins and it is excited by radiofrequency pulses (wavelength about one meter), that tilt the axis of the magnetization. When the magnetization returns to equilibrium, it generates an electromagnetic field which is classically detected by a receiving antenna (coil with atuning/matching circuit) in inductive coupling.In this work, we propose the use of a micrometer-sized probe positioned in the vicinity of the object of interest, at a distance well shorter than the wavelength of the radiated NMR signal.Our microprobe presents innovative characteristics (i) a capacitive coupling (electric field component), (ii) reduced dimensions for an accurate positioning, which ensure the detection of NMR signal from the sample and (iii) it has a broadband, which allows use to detect any nuclei without being tuned to the Larmor frequency.To introduce you this new alternative, the tools necessary to the understanding of this work, in this case the principle of NMR/MRI and an introduction of the theory of the electric near field are given initially.We made also a state of the art of existing methods and techniques for measuring the NMR signal to identify the benefits that such a system (method : capacitive coupling and device : microprobe near field) can bring to the NMR technique.Then, we have characterized our microprobe to enhance its localized detection due to its small size (127 μm in diameter and 2mm in length). In this stage of characterization, we demonstrated that the NMR signal recovered by our antenna can be described by the electric near field expression :E(x, z) = A(Kz ) exp(i(z/L)) exp(−x/L) +Propagative TermFinally, we applied our system to make NMR studies such as spectroscopy, the relaxometry and NMR Imaging. We have outlined some potential projects to the continuity of this work
Parminter, Terry Graham. "An examination of the use of a human behaviour model for natural resource policy design and implementation by government (central and regional) agencies". The University of Waikato, 2009. http://hdl.handle.net/10289/2638.
Texto completo da fontePascual, Borràs Magdalena. "Computational Modelling of Polyoxometalates: Progress on Accurate NMR Characterization and Reactivity". Doctoral thesis, Universitat Rovira i Virgili, 2017. http://hdl.handle.net/10803/440510.
Texto completo da fonteEsta tesis se puede dividir en dos partes diferentes: i) RMN y ii) Reactividad. El factor común de ambas secciones son los polioxometalato (POMs). Los POMs son aniones polimetálicos moleculares formados por la agregación de bloques octaédricos MO6 formados por metales de transición, en sus estados de oxidación más altos, y oxígeno, que están conectados por vértices y bordes. La primera parte está relacionada con la caracterización de los POMs. En particular, se basa en el cálculo de parámetros de espectroscopia de resonancia magnética nuclear (RMN). Primero, nos centramos en el núcleo 17O. Se ha establecido una estrategia basada en metodología DFT para calcular con precisión y racionalizar los desplazamientos químicos de 17O en los POMs. Se ha demostrado que los cálculos realizados con el funcional PBE de tipo GGA, incluyendo correcciones de órbita y estalaje, proporcionan un error absoluto medio (MAE) <30 ppm, un valor pequeño considerando el amplio rango de desplazamientos químicos δ (17O) en POMs. También se ha realizado un estudio similar para la determinación de desplazamientos químicos de 31P en POMs. Se ha descrito el primer polioxometalato que contiene talio, el cual se ha sintetizado y determinado estructuralmente. Se ha realizado un estudio detallado de RMN de 203 / 205Tl para reproducir los valores experimentales. Los δ (205Tl) son reproducidos con metodología DFT.La segunda parte incluye estudios de reactividad de POMs. Matt et. al. (Energy Environ. Sci. 2013, 6, 1504) diseñó un polioxometalato con un foto sensibilizador de Ir (III) capaz de producir H2 de forma eficiente. El mecanismo de la recolección de luz visible, la formación de especies de carga separada y la reducción de protones ha sido analizado por DFT y DFT dependiente del tiempo (TD-DFT). En la última parte, se presenta un estudio computacional para investigar (a) los efectos de diferentes ligandos de {M5O18}6- sobre la protonolisis del enlace M'-OR y (b) los efectos de diferentes metales M' sobre la hidrólisis de [(RO)M'W5O18]n- con diferentes metaltes. Por último, se presenta un estudio experimental sobre la protonación del dímero (TBA)6[(μ-O)(TiW5O18)2].
This thesis can be divided in two different parts: i) NMR and ii) Reactivity. The common factor of both sections is Polyoxometalates (POMs). POMs are polymetallic molecular anions formed upon aggregation of octahedral MO6 blocks made of early transition metals (TMs), in their higher oxidation states, and oxygen, that are connected commonly by vertices and edges. The first part is related to the characterization of POMs. In particular, it is based on the calculation of nuclear magnetic resonance (NMR) spectroscopy parameters. First, we focused on 17O nuclei. We have established a DFT-based strategy to accurately compute and rationalize 17O NMR chemical shifts of polyoxoanions. We show that calculations performed with GGA-type PBE functional, including spin-orbit and scaling corrections, provide a mean absolute error value (MAE) <30 ppm, a small value considering the large range of δ(17O) chemical shifts in POMs. A study for the best DFT strategy for the determination of 31P NMR chemical shifts in POMs is also reported. We have described the first thallium containing polyoxometalate, which was synthetized and structurally determined. A detailed study of 203/205Tl NMR has been performed in order to reproduce the experimental values. The δ(205Tl) are really well reproduced with DFT methodology. However, in the spin-spin coupling, there are large differences between calculated and experimental 2J(205Tl-203Tl).
Laitila, Katarina. "Konsumenters kunskap och uppfattning om nyckelhålsmärkta produkter". Thesis, Örebro universitet, Akademin för juridik, psykologi och socialt arbete, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-14490.
Texto completo da fonteThe purpose with this study is to illustrate if the keyhole-symbol of food products has an impact on consumers view on, and choice of food product. This study will also illuminate if the consumers reasoning is critical of the sources. Fifty interviews were applied. The study shows that the keywhole-symbole has a positive influence on respondent's perception of healthiness and on likelihood to buy the product. The study also shows striking results int the absence of critical thinking about the sources.
Gutierrez, Enver Manuel Amador Ramirez. "Interação multi-escala entre o oceano e a atmosfera e a variabilidade de baixa frequência". Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/14/14133/tde-27062013-112941/.
Texto completo da fonteIn the present work a multiscale method is used to study resonant nonlinear wave-wave interactions between the ocean and the atmosphere. A hierarchy of coupled atmosphere-ocean models is developed using typical scalings found in the tropical region with the aim to represent some of the dominant modes of climate variability (intraseasonal, interannual and decadal). The sources of nonlinearity included into model are of two types: I) intrinsic nonlinearity (advective form) and II) nonlinearity related to physical terms. A multi-scale perturbation method is applied to obtain equations governing dynamics of ressonant interactions. The solutions are described in terms of dominant and secular solutions. For the dominant modes basis functions of the linear problem are used in a approximation of the Galerkin type. The properties of the basis functions allows the analytical computation of the interaction coefficients associated with non-linear terms and the projection into the natural oscillation modes of the system (resonance). Using this method it is possible to obtain reduced models to determine the contributions of several processes to the slow time evolution of a specific mode of natural variability. To apply these concepts to the problem of atmosphere-ocean coupling an Ansatz composed of a three waves (two atmospheric Rossby and Kelvin waves and an ocean Kelvin wave) is used. The triad chosen represents a aproximation of several phenomena found in the tropical region, e.g. desenvolving of El Nino, interaction of the Madden-Julian oscillation with the ocean, interaction between El Nino and intra-seasonal variability, etc. It is shown that system allows a resonance involving atmospheric and oceanic waves and that the low-frequency modulation resulting from these ressonance can affect the system from fast equatorial synoptic scales to decadal timescales, including the intermediate scales i.e., intraseasonal and interannual.
Parnum, Iain Michael. "Benthic habitat mapping using multibeam sonar systems". Thesis, Curtin University, 2007. http://hdl.handle.net/20.500.11937/1131.
Texto completo da fonteParnum, Iain Michael. "Benthic habitat mapping using multibeam sonar systems". Curtin University of Technology, Dept. of Imaging and Applied Physics, Centre for Marine Science and Technology, 2007. http://espace.library.curtin.edu.au:80/R/?func=dbin-jump-full&object_id=18584.
Texto completo da fonteIt was shown that the distribution of the backscatter. The shape parameter was shown to relate to the ratio of the insonification area (which can be interpreted as an elementary scattering cell) to the footprint size rather than to the angular dependence of backscatter strength. When this ratio is less than 5, the gamma shape parameter is very similar for different habitats and is nearly linearly proportional to the ratio. Above a ratio of 5, the gamma shape parameter is not significantly dependent on the ratio and there is a noticeable difference in this parameter between different seafloor types. A new approach to producing images of backscatter properties, introduced and referred to as the angle cube method, was developed. The angle cube method uses spatial interpolation to construct a three-dimensional array of backscatter data that is a function of X-Y coordinates and the incidence angle. This allows the spatial visualisation of backscatter properties to be free from artefacts of the angular dependence and provides satisfactory estimates of the backscatter characteristics.
Using the angle-average backscatter strength and slope of the angular dependence, derived by the angle cube method, in addition to seafloor terrain parameters, habitat probability and classification maps were produced to show distributions of sand, marine vegetation (e.g. seagrass and rhodolith) and hard substrate (e.g. coral and bedrock) for five different survey areas. Ultimately, this study demonstrated that the combination of high-resolution bathymetry and backscatter strength data, as collected by MBS, is an efficient and cost-effective tool for benthic habitat mapping in costal zones.
Parsons, Miles James Gerard. "An investigation into active and passive acoustic techniques to study aggregating fish species". Thesis, Curtin University, 2009. http://hdl.handle.net/20.500.11937/2133.
Texto completo da fonteCabanes, Sempere Maria. "Innovative production of nuclear fuel by microwave internal gelation". Doctoral thesis, Editorial Universitat Politècnica de València, 2013. http://hdl.handle.net/10251/31641.
Texto completo da fonteIn the continuous aim to reduce the amount of minor actinides (MA) from the spent fuel of Light Water Reactors (LWR) and therefore reduce its radiotoxicity (radioactive toxicity), new nuclear fuel concepts have been developed. Sphere-Pac (SP) fuel gives the opportunity to reintroduce the MA in a fuel matrix and to burn them in a fast reactor, which facilitates a multi-cycle because of its breeding feature, or in a subcritical fast system, i.e. an Accelerator Driven System (ADS) where its sub-criticality allows higher MA contents than a normal fast reactor reducing efficiently the radiotoxicity in one step. SP fuel is produced from the base solution (already containing all the elements) by internal gelation, which guarantees a good material homo- geneity and a lower contamination risk compared to the classical pellet fabrication, avoiding presses and grinding machines. The internal gelation is an aqueous chemical reaction occurring when the solution is heated up to 80 ± 5¿C. When performing the internal gelation process with electro- magnetic heating, some advantages appear with respect to the traditionally heating through conduction by contact of the sample with hot silicon oil: the recycling step of the oil and the organic solvents necessary to clean the particles from oil are avoided. In the Microwave Internal Gelation (MIG) unit, the microwaves represent a much simpler and safer alternative: the contactless volumetric heating facilitates the remote production of the fuel in hot cells and furthermore reduces the contaminated liquid waste. The fuel related project called Platform for Innovative Nuclear FuEls (PINE), in which this thesis is embedded, aims for the production of SP- fuel by MIG. In the MIG system, the heating time is very short (in the order of tens of milliseconds), therefore the microwave heating parameters have to be optimized and a good knowledge of the interaction between the microwaves and the samples must be achieved. In the first part of this dissertation a finite difference time domain (FDTD) thermal model capable to determine over each instant about the thermal behaviour of a definite point inside a material during heat process- ing is investigated. A detailed overview of the most relevant parameters on the model including the boundary conditions (e.g. convection) is pre- sented. Furthermore, the model is analytically implemented and validated with different techniques: a theoretical based physically validation, a par- tial differential equations (PDEtools) based validation and a validation with examples from the literature. Secondly, possible microwave cavity designs for MIG are researched. The cavities (selection of modes, resonant frequency, Q-factor, etc.) and its subsequent characterization for the coupling of energy are explained. Furthermore, the power transfer mechanisms of the cavities are explained using the perturbation method to analyse the losses when a dielectric sam- ple is placed inside a cavity. The developed power transfer model delivers the microwave heat generation rate which is applied to the FDTD thermal model mentioned in the previous paragraph. The analytical results provide a positive impression about the feasibility of producing gelated spheres by MIG. Next, the main parameters dealing with the heating of a material by microwaves are introduced. A new procedure that enables the measure- ment of dielectric properties of aqueous droplets freely falling through a microwave cavity is developed. The experimental setup is presented and several experiments prove its feasibility. The measured dielectric properties are afterwards included in the perturbation and thermal models with the main intention of determining the absorbed power by the material in form of drops and the reached temperature. In the last part the MIG system for the laboratory practice of the high frequency heating applied to the PINE project is implemented. Each device is characterized for a power study precedent to the MIG system assembly, avoiding then failures when putting the system into operation. In addition, the experimental techniques and the results are reported. Successful pro- duction of gelated spheres shows the favourable usage of microwave for the production of SP-fuel by internal gelation.
Cabanes Sempere, M. (2013). Innovative production of nuclear fuel by microwave internal gelation [Tesis doctoral]. Editorial Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/31641
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Chen, Shau-Wei, e 陳劭瑋. "Efficiency improvement of full-bridge resonsnt converter under light load condition". Thesis, 2015. http://ndltd.ncl.edu.tw/handle/8p6478.
Texto completo da fonte國立臺北科技大學
電機工程系所
103
The main theme of this thesis is to design and implement an LLC resonant converter controlled by a digital signal processor. The output voltage is regulated by the variable switching frequency. The resonant inductor, resonant capacitor and magnetizing inductor are used to achieve zero voltage switching and reduce switching loss. In addition, synchronous rectifier for LLC converter is used to reduce conduction loss in secondary side and improve efficiency. A hybrid control strategy is proposed to well regulate the output voltage and reduce the switching loss under light load condition. The circuit parameter is designed with the large magnetizing inductance to decrease the primary side current. The entire system has better performance than that for conventional control method. The signal processor, TMS320F28035, is used as the control platform for the verification of design and implementation. The specifications include input voltage 400V, output voltage 12V, total power rating 720W and switching frequency varying from 60 kHz to 130 kHz. Simulation and experimental results show that the maximum efficiency improvement is up to 2% using the hybrid PWM control technique. These results confirm the design and implementation.
Wen, Sheng-Hua, e 温盛華. "Job Demands and Fatigue : The Moderation Role of Job Resouse and Self-determined motivation". Thesis, 2016. http://ndltd.ncl.edu.tw/handle/6s2769.
Texto completo da fonte國立東華大學
企業管理學系
104
Because of change of society and transformation of industry structure, organizations are now facing stiff competitions. High job demands from employees may impacts negative on employees’ wellbeing. This study is aiming at discussing the moderator effect that the job resource and self-determined motivation plays between job demand and fatigue. The questionnaire surveyed 313 Taiwanese employees. The regression showed job demand has a positive effect on fatigue. Besides, employees who have high self-determined motivations may mitigate the positive effect that job demand posing on fatigue. At the end of this research, we propose discussion and future research recommendations.
Peng, Guo-Hsuan, e 彭國璿. "Characteristic Analysis and Pulse Compression of theWeak-Resonat-Cavity Fabry-Perot Laser Diode Mode-LockedFiber Ring". Thesis, 2008. http://ndltd.ncl.edu.tw/handle/62462843200125184535.
Texto completo da fonte國立臺灣大學
光電工程學研究所
96
In this thesis, we discussed the characteristics of optical injection mode-locking of a weak-resonant-cavity Fabry-Perot laser diode based fiber ring. The 10 GHz mode-locking pulse was generated by using the 10 GHz dark-optical comb injection. The thesis has three mainly parts: First, the optical injection mode-locking of a weak-resonant-cavity Fabry-Perot laser diode based fiber ring with an intra-cavity power controlled wavelength shift and a reducing chirp linewidth at high intra-cavity coupling ratio condition is demonstrated. Both the strong dark-optical comb and strong feedback coupling contribute to the wavelength spectrum shift toward longer wavelength, a wavelength shift from 1536 to 1542 nm of the weak-resonant-cavity FPLD based fiber ring associated with its pulsewidth and linewidth also reduced from 27 to 19 ps and from 10 to 6 nm, respectively, can be observed. Furthermore, the peak-to-peak frequency chirp reduced from 3.5 to 1.8 GHz was caused by the shrink of linewidth. Second, a novel optical TDM pulsed carrier from optically injection-mode-locked weak-resonant-cavity Fabry-Perot laser diode (FPLD) with 10%-end-facet reflectivity is demonstrated with tunable mode spacing matching ITU-T DWDM channels. The FPLD exhibits relatively weak cavity modes and a gain profile covering > 33.5 nm with intracavity mode spacing of 1.6 nm. The mode-spacing spacing was tunable by adjusting length of the fiber ring cavity. The least multiple between the longitudinal modes of ring cavity and FPLD result in 12 lasing modes with channel spacing of 200 GHz and a mode-locking pulsewidth up to 19 ps. The operating wavelength can further extend from 1520 to 1553.5 nm. After channel filtering, each selected longitudinal mode component give rises to shortened pulsewidth of 12 ps due to reduced group velocity dispersion. By linear dispersion compensating with 55 m long dispersion compensation fiber (DCF), the pulsewidth can be further compressed to 8.5 ps with corresponding chirp reducing from 9.7 to 4.3 GHz. Final, 1.4-picosecond nonlinear pulse compression of a backward dark-optical-comb injection harmonic-mode-locked semiconductor optical amplifier based fiber laser (SOAFL) is demonstrated. With the tunable bandpass filter (TBF) in the fiber ring, shortest mode-locked SOAFL pulsewidth of 12 ps at 10 GHz is generated, which can further be compressed to 1.4 ps after nonlinear soliton compression. A maximum pulsewidth compression ratio for the compressed fifth-order mode-locked SOAFL is reported. The fifth-order soliton can be obtained by injecting the amplified pulse with peak power of 10.8 W into a 400m-long single-mode fiber (SMF). The tolerance in SMF length is relatively large (400-700 m) for obtaining <2 ps mode-locked SOAFL pulsewidth. However, without the TBF in fiber ring, the mode-locked SOAFL linewidth can be broadened to 2.4 nm and the pulsewidth were broaden to 21 ps. It can be linear compensated to 12 ps by passing through the 70m-long dispersion compensation fiber (DCF). It can be further compressed to 2.1 ps after fifth-order soliton compression, at the same time, the linewidth of mode-locked SOAFL broadened from 2.4 to 3.8 nm.
Li, Jackson, e 李雨龍. "The Study on the Feasibility of Strategic Alliance for Educational Resouse of Taichung’s Senior-high Vocational Schools". Thesis, 2008. http://ndltd.ncl.edu.tw/handle/75475531670803348895.
Texto completo da fonte國立中興大學
國家政策與公共事務研究所
96
This research aims to explore into the feasibility of strategic alliance for educational resouse of Taichung’s senior-high vocational schools. The research methods adopted in this study include questionnaire survey methods and in-depth interview. The questionnaire subjects were senior high school teachers in Taichung area. The subjects were 745 teachers from 27 senior high schools, 421 were valid questionnaires. The proportion of valid questionnaires was 56.5%. The data were processed and analyzed by using descriptive statistics, t-test and one-way ANOVA. The subjects of in-depth interview were 6 executive secretaries from technical colleges and polytechnic universities in Taichung. According to the final analysis, we expect the results of the common consensus and the resources integration between the schools of strategy alliance will be achieve, a link between vertical and parallel of the technique education will be establish and educational quality of the senior high vocational school will be augment. Based on the aforementioned methods, the results are summarized as followed. 1. The framework of Strategic Alliance has been accepted by Taichung’s teachers of vocational schools. 2. Strategic Alliance has the function of teaching quality and study effect to Taichung’s schools. 3. Taichung’s Strategic Alliance has the function of resource integrate of the equipment purchase and the resources share each other. 4. There are a lot of difficulties that have to be overcome about Taichung’s Strategic Alliance need to solved by schools and the departments for education.
Peng, Guo-Hsuan. "Characteristic Analysis and Pulse Compression of the Weak-Resonat-Cavity Fabry-Perot Laser Diode Mode-Locked Fiber Ring". 2008. http://www.cetd.com.tw/ec/thesisdetail.aspx?etdun=U0001-2307200818084700.
Texto completo da fonte