Le roman policier espagnol écrit au cours des trois dernières décennies se définit essentiellement comme un roman social urbain. Les déplacements des détectives mettent en lumière la cartographie d’un espace urbain espagnol en mutation, en accord avec les transformations subies par la société espagnole. Cette thèse se propose, à partir d’œuvres de quatre écrivains, Alicia Giménez Bartlett, Antonio Lozano, Juan Madrid et Andreu Martín, de dégager les lectures possibles de l’espace urbain qui permettent de mieux comprendre l’évolution de la société espagnole. Nous verrons d’abord un espace de proximité constitué d’une combinaison de lieux anthropologiques ; puis, un espace traversé de frontières visibles et invisibles qui entravent le mouvement d’une partie de la population ; enfin, un espace dans lequel la mobilité se généralise accentuant les inégalités entre ceux qui y ont accès et ceux qui sont condamnés à l’immobilité. Cette thèse propose une approche littéraire et sociologique du roman policier espagnol contemporain. / The Spanish crime novel that has been written over the last three decades can be essentially defined as an urban social novel. The movements of the detectives reveal the cartography of a Spanish urban space which is in mutation, reflecting the transformations undergone by Spanish society. Based on the work of four authors, Juan Madrid, Andreu Martín, Alicia Giménez Bartlett and Antonio Lozano, this thesis proposes various possible ways of interpreting that urban space, thus enabling a better understanding of the evolution of Spanish society. First of all, we encounter a space of proximity comprising a combination of places - as defined by Marc Augé ; then a space across which visible and invisible frontiers run, hindering mobility for a part of the population ; finally a space in which mobility is widespread, so emphasizing the inequality between those who have access to it and those who are condemned to staying put. This thesis thus proposes a literary and sociological approach to the contemporary Spanish crime novel.

Submitted by Ana Hilda Fonseca (anahilda@ufba.br) on 2014-10-21T15:52:48Z No. of bitstreams: 1 Dissertação de mestrado Paula Lopes.pdf: 3114896 bytes, checksum: 64c14138aec1c0f19b0f9445d7a07625 (MD5) / Approved for entry into archive by Ana Hilda Fonseca (anahilda@ufba.br) on 2014-10-29T17:29:36Z (GMT) No. of bitstreams: 1 Dissertação de mestrado Paula Lopes.pdf: 3114896 bytes, checksum: 64c14138aec1c0f19b0f9445d7a07625 (MD5) / Made available in DSpace on 2014-10-29T17:29:36Z (GMT). No. of bitstreams: 1 Dissertação de mestrado Paula Lopes.pdf: 3114896 bytes, checksum: 64c14138aec1c0f19b0f9445d7a07625 (MD5) / Energia e Ambiente ocupam posições de destaque dentre os grandes desafios da hu manidade e a produção de hidrogênio a partir da reforma foto - induzida de solução aquosa de glicerol é uma investigação de grande interesse científico e importância para a sociedade e o meio ambiente , pelo fato de gerar energia limpa a partir de fontes reno váveis e com baixo custo. Neste sentido, o presente trabalho propõe desenvolver semicondutores do tipo sulfetos metálicos e soluções sólidas do tipo Cd (1 - x) Zn x S capazes de absorver luz visível e assim conduzir a reação de decomposição da água e glicerol le vando à produção de hidrogênio assistida por um simulador de luz solar . Para tanto, foi desenvolvido um método sonoquímico de síntese de nanopartículas dos sulfetos com diferentes proporções Cd:Zn:S nas soluções de partida. As análises de difração de raios X confirmaram a obtenção das fases dos sulfetos puros e soluções sólidas. As micrografias obtidas por microscopia eletrônica de varredura revelam diferentes morfologias a depender do teor de zinco nas soluções sólidas e a formação de nanoesferas de CdS pu ro em fase hexagonal. Os materiais ainda foram caracterizados por EDX, DRS e análise textural por adsorção de N 2 . A avaliação da atividade fotocatalítica na produção de hidrogênio revelou que todas as amostras contendo Cd em sua composição foram ativas, co m exceção da amostra S 8 ( Cd:S 1:8). O fotocatalisador que apresentou melhor atividade foi a solução sólida obtida com a proporção 1:8:4 (Cd:Zn:S), com uma taxa de produção de hidrogênio de 239  mol g - 1 h - 1 . Os resultados demonstraram que a introdução de zinco na matriz wurtzita de CdS aumenta a atividade fotocatalítica e a estab ilidade do fotocatalisador em me io aquoso. / Energy and Environment are ones of the great challenges of humanity and the production of hydrogen from photo - induced reforming of glycerol aqueous solution is an investigation of great scientific interest and importan t fo r the society and the environment . This process can generate clean e nergy from renewable sources with low cost. In this sense, the present work proposes to develop semiconductor s, metal sulfide type and solid solutions type, Cd (1 - x) Zn x S , able to absorb vis ible light and decompos e water and glycerol leading to hydrogen production assisted by a simulator sunlight. Thus , it was developed a sonochemical method to synthesi ze semiconductor nanopar ticles with different Cd:Zn:S ratios in starting solutions. X - ray d iffraction analysi s confirmed the formation of pure sulfides and solid solutions phase s . The micrographs obtained by scanning electron microscopy reveal different morphologies depending on the zinc content in the solid solutions and the formation of CdS na no - spheres in hexagonal pure phase. The material s w ere also ch aracterized by EDX, DRS and textural analysi s by N 2 adsorption . The assessment of photocatalytic activity in hydrogen production showed that all samples containing Cd were active with respect to hydrogen production , exception S 8 sample ( Cd:S 1:8). The photocatalyst that showed the best activity was the solid solution obtained with the ratio 1:8:4 (Cd:Zn:S), with a hydrogen production rate of 239 μmol g - 1 h - 1 . The results demonstrated that the int roduction of zinc in CdS wurtzite matrix increases the photocatalyt ic activity and stability of the photocatalyst in aqueous medium

Syfte: Visuella verktyg kan hjälpa till att minska de mänskliga fel som sker på arbetsplatsen samt skapa en kortare informationstid. Informationen erhålls betydligt snabbare och mer korrekt genom att visualisera informationskanalen där foton, scheman, posters, grafiska bilder och färgkodning är fungerande visuella verktyg. Byggföretagen har, för att effektivisera sina arbetsplatser, tagit fram visuella verktyg, bland annat Visuell Planering Produktion (VPP). Målet med detta examensarbete är att undersöka hur planering och kommunikation mellan platsledning och yrkesarbetare ute i produktionen kan förbättras med stöttning av VPP. För att få svar på det har tre frågeställningar tagits fram:1. Vad är det huvudsakliga syftet med användning av VPP?2. Hur fungerar den dagliga planeringen och kommunikationen idag?3. Hur kan VPP förbättras för att bli ett mer användbart verktyg att tillämpa för platsledningen i produktionen?Metod: Tre metoder är valda för att kunna svara på de tre frågeställningarna. Kvalitativa intervjuer med platschef, arbetsledare och lagbas, dokumentanalys och observationer i samband med intervjuer.Resultat: Planeringen och kommunikation mellan platsledning och yrkesarbetare kan förbättras med hjälp av VPP, dock endast om platsledningen får den utbildning de behöver för att använda verktyget på rätt sätt. Det är även viktigt att platsledningen får anpassa verktyget efter sina behov.Konsekvenser: Verktyget med sina tavlor och möten har i dagsläget förbättringspotential, tre brister med verktyget är: Det saknas information och utbildning till platsledningen på arbetsplatserna Det nya arbetssättet ses inte som mer positivt än det nuvarande Nuvarande utformning på bodarna innefattar platsbristFör att verktyget ska bli bättre finns det vissa punkter som är extra tydliga i resultatet där empirin och analysen ligger till grund för förbättringsförslaget. Förbättringen bör innehålla: Mer ingående utbildningar till platsledningen och mer lättillgänglig information En grundlig förklaring till verktygets användning och dess fördelar Varje projekt ska kunna anpassa VPP för det aktuella projektetBegränsningar: Det teoretiska ramverket kunde inkluderat begrepp som Lean, där VPP har sin grundtanke. Intervjurespondenterna saknade i viss mån erfarenhet och kunskap kring VPP och detta kan spegla en mer generell verklighet kring ämnet. / Purpose: Visual tools can help reduce the human errors that occur in the workplace and create a shorter information time. The information is obtained significantly faster and more accurately by visualizing the information channel where photos, schedules, posters, graphics and color coding are visual tools that are used. To make their workplaces more effective, a construction company has developed a visual tool named Visual Planning Production (VPP). VPP aims to visualize the project and its workflows with various kinds of boards for easier communication between the management and workers. The aim of this study is to investigate how planning and communication between management and craftsmen in production can be improved with the support of VPP. Three questions has been created:1. What is the main purpose of using VPP?2. How does the daily planning and communication work today?3. How can VPP be improved to become a more useful tool to apply for the site management in production?Method: Three methods were selected to answer the three questions. Qualitative interviews with site management and craftsmen leader, document analysis and observations on projects.Findings: Planning and communication between site management and craftsmen can be improved with the help of VPP. This only applies if the site management is given the education they need to use the tool properly. It is also important that the site management can adapt the tool to its project needs. VPP will then provide the transparency and foresight that the project needs to work.Implications: The tool with its boards and meetings currently has potential of improvement. Three examples of difficulties with the tool is: There is no information and education for the site management The new way of working is not seen as more positive than the current one There isn’t space enough in the rooms to hang the boardsThe findings from the analysis tells us what about the tool that can be improved. Some of these points are: A more thorough education for the site management and accessible information A thorough explanation of the use of the tool and its benefits To be able to customize equipment and meetings as needed in the projectsLimitations: The theoretical framework could include concepts like Lean, where VPP has its roots. A general verging of reality is not applicable to this report as the report only concerns two projects in the same geographical area. Interviewers lacked some experience and knowledge about VPP, and this may reflect on a more general reality about the subject.

Submitted by Renata Lopes (renatasil82@gmail.com) on 2018-11-19T12:44:23Z No. of bitstreams: 1 luizeduardomendesmatheus.pdf: 1606990 bytes, checksum: 2736fa2230ff16ef4aaa41155178b616 (MD5) / Approved for entry into archive by Adriana Oliveira (adriana.oliveira@ufjf.edu.br) on 2018-11-23T13:06:46Z (GMT) No. of bitstreams: 1 luizeduardomendesmatheus.pdf: 1606990 bytes, checksum: 2736fa2230ff16ef4aaa41155178b616 (MD5) / Made available in DSpace on 2018-11-23T13:06:46Z (GMT). No. of bitstreams: 1 luizeduardomendesmatheus.pdf: 1606990 bytes, checksum: 2736fa2230ff16ef4aaa41155178b616 (MD5) Previous issue date: 2018-09-03 / Na última década, o interesse (acadêmico e comercial) em torno da Comunicação por Luz Visível (VLC) aumentou consideravelmente, devido a fatores como a crescente demanda por recursos sem fio na Internet e às vantagens oferecidas pela transmissão de dados através da luz visível. Entretanto, a utilização da luz como meio de comunicação, principalmente em ambientes internos, oferece diversos desafios, como interferência e bloqueios criados por obstáculos. Ao mesmo tempo, este tipo de ambiente oferece uma rica infraestrutura de fontes de luz, que podem ser utilizadas para auxiliar na comunicação através de mecanismos multi-hop. A maioria dos trabalhos presentes na literatura adotam técnicas simples para construção de mecanismos multi-hop em redes VLC, focando principalmente em aumento de distância. Neste trabalho, foi desenvolvido um protocolo de roteamento dinâmico, DYRP-VLC (DynamicRoutingProtocolforVisibleLightCommunication),quetemcomoobjetivo aumentar o desempenho de sistemas VLC em ambientes dinâmicos, enquanto reage à obstáculos construindo rotas alternativas na rede. A avaliação do protocolo foi realizada em um ambiente real, utilizando a plataforma embarcada OpenVLC 1.0 e métricas adotadas para problemas de roteamento. Os resultados obtidos mostram que, usando o DYRP-VLC, a rede foi capaz de se adaptar a mudanças dinâmicas na comunicação, como sombras e obstáculos, com pouca sobrecarga. / In the last decade, the interest in Visible Light Communication (VLC) has increased considerably, from both academic and commercial perspectives, due to factors such as the growing demand for wireless resources and the advantages offered by the transmission of data through visible light. However, the use of light as a communication medium, especially in indoor environments, offers several challenges, which includes shadowing and interference caused by obstacles. At the same time, this type of environment offers a rich infrastructure of light sources, which can be used to aid communication through multi-hop mechanisms. Most of the works present in the literature adopt simple techniques to construct multi-hop mechanisms in VLC networks, focusing mainly on increasing distance. Inthisthesis,wedevelopedDYRP-VLC(DynamicRoutingProtocolforVisibleLight Communication), a reactive routing protocol which aims to increase the performance ofVLCsystemsindynamicenvironments,whilereactingtoobstaclesbyconstructing alternative routes in the network. The evaluation of the protocol was performed in a real environment, using OpenVLC 1.0 embedded platform and adopting metrics for routing problems. The results show that, by using DYRP-VLC, the network was able to adapt to dynamic changes in communication, such as shadows and obstacles, with low overhead.

Afin de répondre à l’exigence croissante de densité de puissance aux hautes fréquences, les chercheurs se sont intéressés aux matériaux à large bande interdite tels que le nitrure de gallium GaN. Les HEMTs (transistors à haute mobilité électronique) AlGaN/GaN ne sont pas stabilisées et donc l’analyse de défaillance de ces composants est difficile (défauts multiples).Les mécanismes de défaillance des HEMTs GaAs sont difficilement transposables sur les HEMTs GaN et nécessitent donc une étude approfondie. De plus que les données actuelles sur les effets de pièges ne permettent pas d’expliquer facilement des effet parasites comme l’effet de coude. Ce qui nécessité de développer de nouvelles procédures d’analyse de défaillance adaptées aux composant GaN. Les dégradations induites par les électrons chauds sont difficilement détectables par la technique d ‘émission de lumière standard ce qui a nécessité le développement de la microscopie à émission de lumière dans le domaine de l’UV. L’objectif principal de ce travail est la mise au point d'une méthodologie d'analyse de défaillance pour les filières GaN et l’optimisation des techniques electro-optiques non destructives de localisation de défauts. En vue de l’amélioration des procédés technologiques, et de la fiabilité des HEMT GaN. / There are several economic and technological stakes, which require the development of suitable techniques for failure analysis on microwave devices, the HEMT (High Electron Mobility Transistor) AlGaN/GaN play a key role for power and RF low noise applications.The technologies are not completely stabilized and the failure analysis is difficult. Which need the development of a non destructive investigation techniques such as electroluminescence technics. To improve the GaN HEMT performance and reliability, understanding the failure mechanisms is critical. The standard emission light is not sufficient for hot-elctron detection in GaN material. And the development of UV light emission become necessary in the AlGaN/GaN HEMT.

Dyes for inkjet printing are typically of the chromonic type. Chromonic mesophases have gained considerable attention as a well-defined group of lyotropic mesogens with different properties from conventional amphiphiles. While extensive research has been dedicated to the field of surfactant liquid crystals, structural and aggregation studies of chromonics have only emerged as a topic of interest within the last few years. The liquid crystalline structures in aqueous solutions of commercial Cu - phthalocyanine and black dyes have been examined using a combination of optical microscopy, UV-vis spectroscopy, nuclear magnetic resonance, wide- and small-angle X-ray diffraction and electronic paramagnetic resonance with a view to examining the phase behaviour of the chromonic mesophases formed over a broad range of concentrations and temperatures. These studies were performed in order to resolve outstanding problems concerning structural properties of these systems. Optical microscopy allowed us to identify the liquid crystalline phases and to construct the phase diagram. The observations show that both of these dyes form nematic mesophase above 15% wt / wt% dye. The small-angle diffraction data confirmed that the nematic phase for the black dye is maintained throughout the 16-25% composition range. A further increase in concentration leads to the formation of the hexagonal phase. The Cu – phthalocyanine dye also formed a nematic phase at low concentrations, with the aggregates undergoing a phase transition to an orientationally ordered chromonic liquid crystal phase at high dye concentration. These studies showed that this ordered phase possessed hexagonal symmetry. The wide-angle X-ray results demonstrated that aggregation involved π-π stacking of the molecules into columns. An additional reflection at ca. 6.8Å was observed for the black dye, which is believed to arise from “head – to – tail” packing of the molecules within the aggregates (a similar phenomenon observed in other azo dyes, e.g. Edicol Sunset Yellow).The densities of both dyes were measured over the studied range of concentrations. This enabled us to calculate the parameters of the aggregates within the hexagonal mesophase. A comparison between the area of the molecule and the cross-section of the aggregates showed that the aggregates of both dyes were the unimolecular stacks.

L’étude des automates est un sujet fondamental de l’informatique. Ce modèle apporte des solutions pratiques à divers problèmes en compilation et en vérification notamment. Dans ce travail nous proposons l'extension aux automates à pile visible de résultats existants pour les automates. Nous proposons une définition d'automate à pile visible émondé et donnons un algorithme s’exécutant en temps polynomial émondant un automate en préservant son langage. Nous donnons aussi un algorithme de complexité exponentielle qui, pour un automate à pile visible donné, construit un automate équivalent à la fois émondé et déterministe. Cette complexité exponentielle se révèle optimale. Étant donné un automate à pile visible, nous pouvons associer à ses transitions des coûts pris dans un semi-anneau S. L’automate associe ainsi un mot d’entrée à un élément de S. Le coût d’un automate est le supremum des coûts associés aux mots d'entrée. Pour les semi-anneaux des entiers naturels et Max-plus, nous donnons des caractérisations et des algorithmes polynomiaux pour décider si le coût d’un automate est fini. Puis, nous étudions pour les entiers naturels la complexité du problème de la majoration du coût par un entier k. Les transducteurs à pile visibles produisent des sorties sur chaque mot accepté. Un problème classique est de décider s'il existe une borne sur le nombre de sorties de chaque mot accepté. Pour une sous-classe des transducteurs à pile visible, nous proposons des propriétés caractérisant les instances positives de ce problème. Nous montrons leur nécessité et discutons d’approches possibles afin de montrer leur suffisance. / The study of automata is a central subject of computer science. This model provides practical solutions to several problems including compilation and verification. In this work we extend existing results of automata to visibly pushdown automata. We give a definition of trimmed visibly pushdown automata and a polynomial time algorithm to trim an automata while preserving its language. We also provide an exponential time algorithm which, given a visibly pushdown automaton, produces an equivalent automaton, both deterministic and trimmed. We prove the optimality of the complexity. Given a visibly pushdown automaton, we can equip its transitions with a cost taken from a semiring S, and thus associate each input word to an element of S. The cost of the automaton is the supremum of the input words cost. For the semiring of natural integers and Max-plus, we give characterisations and polynomial time algorithms to decide if the cost of a visibly pushdown automaton is finite. Then in the case of natural integers we study the complexity of deciding if the cost is bounded by a given integer k. Visibly pushdown transducers produce output on each accepted word. A classical problem is to decide if there exists a bound on the number of outputs of each accepted word. In the case of a subclass of visibly pushdown transducers, we give properties characterizing positive instances of this problem. We show their necessity and discuss of possible approaches to prove their sufficiency.

La synthèse de chromophores organiques comme composants de matériaux pour l'optique non-linéaire a été le point central d'un grand nombre de recherches, en raison de leur utilisation potentielle dans les domaines des communications optiques, du traitement de l'information, de l'imagerie… Le plus souvent, les molécules possédant de fortes valeurs d'hyperpolarisabilité [bêta] sont constituées d'un couple de groupements donneur-accepteur connecté par le biais d'un système [pi]-conjugué. Celles comportant des hétérocycles comme motifs centraux ont reçu une attention considérable dans le domaine de l'optique non-linéaire en raison de leur relative facilité de préparation et de la variation de leur degré de polarité. A ce titre, nous nous sommes intéressés à la conception de nouvelles molécules ayant la structure précédemment décrite. Les variations structurales ont porté sur le groupement donneur (alkoxy, dialkylamino porté par un cycle aromatique), le groupement accepteur (dicyanovinyle, acide cyanoacrylique et acide thiobarbiturique) et le système [pi]-conjugué (thiophène, thiéno[3,2-b]thiophène et bithiophène). Les propriétés optiques de ces composés ont été étudiées et ont permis d'établir quelques liens entre certaines modifications structurales et les propriétés optiques. Les fortes valeurs de [bêta] obtenues montrent clairement le potentiel des composés préparés et permettent d’envisager d’autres modifications structurales afin d'encore améliorer ces valeurs / The synthesis of organic compound as components of materials for nonlinear optics has been the focus of many researches because of their potential uses in the fields of optical communications, information process, imagery ... Most often, the molecules with strong hyperpolarizabilitie [bêta] values incorporate a pair of donor-acceptor groups connected via a [pi] -conjugated system. Those containing heterocycles motifs received considerable attention in the field of nonlinear optics due to their relative facility of preparation. We are interested in designing of new molecules with the structure previously described. The structural changes have focused on the donor group (alkoxy, dialkylamino carried by an aromatic ring), the acceptor group (dicyanovynil, cyanoacrylic acid and thiobarbituric acid) and [pi]-conjugated system (thiophene, thieno[3,2-b]thiophene and bithiophene). The optical properties of these compounds have been studied and we have established some links between some structural changes and optical properties. The high values of [bêta] obtained clearly show the potential of compounds prepared and used to explore other structural modifications to improve these values

Indoor positioning is an enabling technology primed to impact the indoor application space as Global Navigation Satellite Systems (GNSS) did for the outdoor space. Amongst the competing positioning technologies are methods of different mediums: light, radio frequency and ultra-wideband, ultrasonic, and imaging; methods of different modalities: received signal strength, angle-of-arrival, time-of-flight; and methods of different mathematics: trilateration, triangulation, machine learning, and signal processing. Light-based positioning compared to other positioning schemes exploits fixed-location directional luminaires placed regularly throughout a space as anchor points -- there is an efficiency argument for multi-purpose lighting and a cost-share argument for infrastructure-based positioning. Similar to the satellite infrastructure with GNSS, with anchor points and models for light propagation and construction, position is estimated based on received signals at active photodiode-equipped target devices. Received signal strength, a common first order attribute, alone is not noise resilient enough for centimeter-level 3D positioning. Methods using angle diversity produce better results particularly in 3D but with more complex hardware. For this dissertation, we exploit angle diversity and modulated optical sources in light-based positioning systems to estimate position to centimeter-level accuracy in 3D. We propose, analyze, and contribute two novel positioning schemes that use these concepts. One of the proposed schemes is a new hybrid 3D indoor positioning technique, Ray-Surface Positioning (RSP), which incorporates a narrow field-of-view (FOV) optical source (Ray) with wide diffuse optical sources (Surfaces) to position active devices in 3D. The second scheme, a Zone-based Positioning Service (ZPS), is a positioning scheme and architecture that incorporates an angle diverse narrow FOV optical source at the positioned device. This unique design decision allows the active device to position itself directly with respect to photovoltaic anchor points but also to position other devices in its FOV called transitive positioning. Along with these contributions, we also investigate several other related topics. Concisely, as part of the dissertation, we contribute (a) review of the state-of-the-art, (b) analysis for steering Lambertian sources, (c) method of creating angle diversity from a narrow FOV optical source, (d) novel positioning approaches in (1) RSP and (2) ZPS, (e) proof of concept prototypes for (1) RSP and (2) ZPS, and (f) architectures for indoor positioning applications.

Denna licentiatuppsats handlar om hur lärare dokumenterar elevers kunskaper i ämnet idrott och hälsa. Syftet med studien var att undersöka hur lärare arbetar med dokumentation, hur detta arbete upplevs utifrån olika förutsättningar samt om det finns skillnader i lärares erfarenheter av dokumentationsarbetet och vad dessa skillnader i så fall består i. I dagens skola ställs allt högre krav på dokumentation av elevernas kunskaper som underlag för en rättssäker bedömning och betygsättning.  Många lärare upplever att det är ett problem i ämnet idrott och hälsa där det inte finns någon direkt tradition av skriftliga underlag för bedömning. De ökade kraven på dokumentation och att bedriva en traditionellt utformad undervisning i ämnet uppfattas av många lärare som en omöjlig ekvation. Studiens perspektiv är läroplansteoretiskt. Begrepp som transformering och realisering av undervisningsinnehåll, ramfaktorer för undervisningen samt former av pedagogik, har använts för att analysera problematiken kring dokumentation i idrott och hälsa. Studiens resultat visar att en stor andel av lärarna upplever dokumentation av elevers kunskaper som svårt. Det som framstår som lätt att dokumentera blir också lärarnas underlag för bedömning snarare än det som styrdokumenten stipulerar. En grupp lärare upplever dock inte alls samma problem med dokumentation, trots att de står inför samma utmaningar i form av undervisningstid, schema och elevgrupper som andra lärare. Vad som utmärker dessa lärare, de systematiska planerarna, är att deras undervisningspraktik, innefattande planering, undervisning och bedömning, i stora delar skiljer sig från övriga lärares vilket skapar andra möjligheter för dokumentation. / In several Swedish research studies about the school subject physical education and health (PEH), assessment emerges as a difficult task for teachers. Assessment and grading is largely based on observation and teachers’ gut feeling, even though a reliable assessment process requires some form of documentation. The aim of this study is to examine how teachers in the Swedish primary and secondary schools document the students' knowledge and how this work is perceived in relation to influencing factors. The theoretical framework consists of curriculum theory with a focus on frame factors and the transformation and realization of the subject content. In the first part of the data collection 144 PE teachers completed a survey about their perceptions of the documentation process. The second part was conducted as semi-structured interviews with ten PE teachers focusing on the teachers’ work with the documentation of students’ knowledge in PEH. The results show that a large majority of the teachers experience the documentation of students' knowledge as difficult. The main obstacles are frame factors such as time, schedule and class numbers. The teachers, however, have a broad repertoire of documentation methods that they use. The analysis indicates that the teachers' documentation of the students’ performances is guided by what is possible to document rather than what learning objectives the curriculum stipulate. However, exceptions emerged among some of the interviewed teachers whose teaching clearly differed from the other teachers. These “systematic planners” had already decided in the planning stages of teaching what content should be assessed, how it should be made, and what kind of information that should be collected and documented. For "the systematic planners" the frame factors did not constitute a major obstacle. The national PE curriculum has undergone significant changes over the last 20 years and the teachers have problems transforming the curriculum into daily practice. The teaching is characterized by a wide variety of content but with few lessons per activity. The collision between the realization of the subject content, and the increased demands for a legally secure assessment practice, is perceived by many teachers as an impossible equation. Having enough time to observe, assess and document all the students' knowledge of a specific subject content, delivered over two to three lessons, is problematic. However in the perspective of "the systematic planners", with perhaps six to eight lessons in the same subject matter, this does not seem to be a problem. / Forskarskolan idrott och hälsas didaktik / Forskningslinjen Utbildning