The thesis describes the creation of the acquisition and analysis of data from the public register of contracts and other defined sources. In the introduction there are described the existing variants of scrapping tools and their use, as well as the problems of Business Intelligence and data warehouses. The next section is devoted to identifying source data. Subsequently, the procedure and design of the solution are described, on which basis was designed the data warehouse. Implementation of ETL processes and creation of final reports are mentioned in the implementation part.

Rights to some articles appeared in this disseration are reserved by the ELSEVIER B.V., John Wiley & Sons, Inc. and Pesticide Science Society of Japan.If any of these materials you wish to use, authorisation from sources must be obtain. / 京都大学 / 0048 / 新制・論文博士 / 博士(農学) / 乙第13023号 / 論農博第2833号 / 新制||農||1043(附属図書館) / 学位論文||H28||N4968(農学部図書室) / 32951 / (主査)教授 佐久間 正幸, 教授 松浦 健二, 教授 奥野 哲郎 / 学位規則第4条第2項該当 / Doctor of Agricultural Science / Kyoto University / DFAM

Within manufacturing of metallic components, machining plays an important role and is of vital significance to ensure process reliability. From a cutting tool design perspective,  tool macro geometry  design  based on physics based  numerical modelling  is highly needed  that can predict chip morphology.  The chip morphology describes the chip shape geometry and the chip curl geometry. The prediction of chip flow and chip shape is vital in predicting chip breakage, ensuring good chip evacuation and lower surface roughness.  To this end, a platform where such a  numerical model’s chip morphology prediction  can be compared with experimental investigation is needed and is the focus of this work. The studied cutting processes are orthogonal cutting process and nose turning process. Numerical models that simulate the chip formation process are employed to predict the chip morphology and are accompanied by machining experiments. Computed tomography is used  to scan the chips obtained from machining experiments and its ability to capture the variation in  chip morphology  is evaluated.  For nose turning process,  chip  curl parameters during the cutting process are to be calculated. Kharkevich model is utilized in this regard to calculate the  ‘chip in process’ chip curl parameters. High speed videography is used to measure the chip side flow angle during the cutting process experiments and are directly compared to physics based model predictions. The results show that the methodology developed provides  the framework where advances in numerical models can be evaluated reliably from a chip morphology prediction capability view point for nose turning process. The numerical modeling results show that the chip morphology variation for varying cutting conditions is predicted qualitatively. The results of quantitative evaluation of chip morphology prediction shows that the error in prediction is too large to be used for predictive modelling purposes.

This master thesis project was carried in collaboration with Keolis AB. One of the company’s goals is to seek for a possible replacement to expensive custom hardware units by cheap single board computers. As a test case, a simple application is proposed, which implements driver identification by scanning the barcode of driving license (personnummer). The main objective of this project is to find a suitable single board computer, to implement the proposed driver identification application, to send the driving license number along with the timestamp in a web page and test the functionality of the single board computer according to procedures specified in ISO and IEC standards for road vehicles. A parser that analyzes the input string of a barcode reader was implemented in C programming language. The barcode reader scans a barcode or a QR code and the parser returns the content of the barcode symbol in ASCII character format. The driver license number as well as the timestamp should be published to a web page. A webpage was created using the Django Web Framework, which is a database-driven website. Each time a driving license barcode is scanned, a POST Http request method is performed and both the driving license and timestamp are stored in a SQLite database. Each time a GET request method is performed the data stored in the SQLite database is retrieved and presented in the website. The communication between the single board computer Raspberry Pi and the Django framework is achieved using cURL, which is an open source command line tool and library for transferring data with URL syntax. The data of the website will be manipulated in the backend. Moreover, heat and humidity environmental testing were performed as described in ISO and IEC standards for road vehicles, to evaluate the functionality of the system under certain environmental conditions. These tests showed the working temperature range and the humidity range that the Raspberry Pi can tolerate. As a conclusion, it can be stated that Raspberry Pi can be used in the passenger compartment with expected temperatures to be below 100 Celsius, but not in the engine compartment where temperatures more than 100 Celsius can occur. In addition, Raspberry Pi can perform in all the levels of humidity that has been tested. If it is necessary to be employed in other bus compartment with increased temperature, a more expensive robust embedded single board Linux computer should be chosen. Future work should include vibrations and immunity testing, in order to fully qualify with the ISO and IEC standards. These types of tests are costly and should therefore be performed by automotive manufacturers or other parties who are expected to bear such a cost. / Detta examensarbete genomfördes i samarbete med Keolis Sverige AB. Ett av företagets mål är att söka efter möjliga system som ersättning till dyra, specialanpassade hårdvaruenheter och istället övergå till billiga enkortsdatorer. Som ett testfall föreslås ett enkelt program, som genomför identifiering av föraren genom att skanna streckkoden på körkortet (personnummer). Huvudsyftet med projektet är att hitta en lämplig enkortsdator, att implementera den föreslagna föraridentifieringsapplikationen, skicka körkortsnumret/personnumret med tidsstämpel till en webbsida och testa funktionaliteten hos enkortsdator enligt testrutiner som beskrivs av ISO- och IEC-standarder för vägfordon. En parser som analyserar indatasträngen av en streckkodsläsare implementerades i programmeringsspråket C. Streckkodsläsaren skannar en streckkod eller en QR-kod och parsern returnerar innehållet i streckkoden på ASCIIteckenformat. Körkortsnumret samt tidsstämpel publiceras på en webbsida. En webbsida har skapats med Django Web Framework, som är en databasdriven webbplats. Varje gång körkortets streckkod skannas, skickas en POST http-begäransmetod som utförs varvid både körkort och tidsstämpel lagras i en SQLite databas. Varje gång en GET-begäran skickas, lagras data i SQLite databasen och presenteras på webbplatsen. Kommunikationen mellan enkortsdatorn Raspberry Pi och ett Django-ramverk uppnås med hjälp av cURL, som är ett kommandoradsverktyg med öppen källkod, och ett bibliotek för att överföra data med URL-syntax. Uppgifterna på webbplatsen manipuleras i backend. Miljötålighetsprovning med avseende på värme- och fuktighet har utförts för att utvärdera systemets funktionalitet under specifika miljöförhållanden. Testerna specificeras i ISO- och IEC-standarder för vägfordon. Dessa tester visade vilka arbetstemperaturer och vilken luftfuktighet som Raspberry Pi klarar. Det kan konstateras att Raspberry Pi kan användas i passagerarutrymmet, där temperaturen förväntas ligga under 100 Celsius, men inte i motorrummet där temperaturer högre än 100 Celsius kan förekomma. Vidare har Raspberry Pi visat sig fungera vid de nivåer av luftfuktighet som har förkommit i testerna. I de fall där systemet skall användas i miljöer med högre temperaturer bör en dyrare och mer robust inbyggd (embedded) Linux-enkortsdator väljas. Det framtida arbetet bör omfatta vibrations- och elstörningstester för att fullt ut säkerställa att systemet klarar gällande ISO- och IEC-standarder. Dessa typer av test är kostsamma och bör därför genomföras av fordonstillverkare eller andra aktörer som förväntas kunna bära en sådan kostnad.

Les objectifs de cette thèse sont (i) de caractériser expérimentalement les phénomènes physiques responsables du tuilage des cartons ondulés observé en usine et (ii) d’en proposer une modélisation hygro-mécanique pertinente. Afin de répondre à ces objectifs, des essais instrumentés ont été réalisés en usine. Ces essais originaux ont permis de mesurer en continu (i) les évolutions de l’humidité relative et la température au sein des piles de cartons ondulés, et (ii) l’évolution du tuilage des plaques de carton ondulé au sein des piles grâce à une suivi par imagerie. Les résultats obtenus ont été analysés au regard des paramètres procédé. Afin de mieux appréhender le phénomène de tuilage observé, qui est par nature multi-échelle (échelle du papier et du carton ondulé) et multi-physique (humidité relative, température, mécanique), des essais en laboratoire (hygroexpansion, traction, flexion) à différentes humidités relatives ont été développés et mis en œuvre afin de caractériser le comportement hygro-mécanique de différents papiers et cartons ondulés. Des essais de tuilage originaux, couplés à des mesures par imagerie, ont été réalisés et ont pu mettre en évidence l’influence de l’humidité relative et de la composition des cartons ondulés sur le tuilage. En s’appuyant sur ces expériences, une modélisation 1D du tuilage, basée sur la théorie des composites sandwich, a été proposée. Ce modèle a ensuite été comparé aux mesures de tuilage réalisées en laboratoire et en usine. Les premières comparaisons modèle-expérience ont montré la pertinence de la modélisation proposée pour décrire le tuilage du carton ondulé. Un outil permettant d’estimer l’évolution tuilage, à court et moyen terme, dans les encours a été développé et mis en place en cartonnerie afin d’améliorer la maîtrise du tuilage des cartons ondulés. / The objective of this thesis is to (i) experimentally characterize the physical phenomena responsible of curl of corrugated board usually observed during the process and (ii) to propose a hygro-mechanical modeling of the curl. For that purpose, in situ instrumented tests were carried out in the corrugated board factory. These original tests allowed to measure continuously (i) the evolution of the relative humidity and the temperature in stacks of corrugated board, and (ii) the evolution of the curl. This latter one was measured using high quality images and advanced image processing. The obtained results were analyzed in relation to the process parameters. In order to better understand the observed curl phenomenon, which is a multi-scale (scale of papers and corrugated boards) and multi-physics (relative humidity, temperature, mechanics) phenomenon, laboratory tests (hygroexpansion, tensile tests, bending tests) at different relative humidities have been performed in order to characterize the hygro-mechanical behavior of several papers and corrugated boards. Original curl tests, using high quality images and advanced image processing, have been developed and carried out. The obtained results highlight the influence of the relative humidity and the composition of corrugated cardboard on the curl. According to these experimental results, a 1D modeling of the curl, based on the sandwich composite theory, was proposed. This model was then compared to the curl measured in the laboratory and in the corrugated board factory. These first comparisons showed the relevance of the proposed modeling to describe the curl of corrugated board. Finally, a practical tool to estimate the evolution of the curl in the factory has been developed and implemented in the factory to prevent the corrugated board curl.

No description available.

1) Geminiviruses are a group of plant viruses which contain circular single stranded DNA molecules as their genomes and the capsid consists of two icosahedra fused together to form twinned or geminate particles. The largest genus in the family Geminiviridae is that of begomoviruses which are of two kinds; the monopartite begomoviruses which contain only one circular single stranded DNA molecule as their genome and the bipartite begomoviruses which contain two circular single stranded DNA molecules (designated DNA-A and DNA-B) as their genomes. In bipartite viruses, the two DNA molecules are enclosed in separate geminate capsids. 2) In bipartite begomoviruses, the DNA-A encodes the proteins essential for replication and encapsidation of the viral genome while the DNA-B encodes the proteins involved in movement. The DNA-B encodes two proteins: the BV1 or the nuclear shuttle protein (NSP) and BC1 or the cell-to-cell movement protein. Geminiviruses have DNA genomes which replicate inside the host cell nucleus. The NSP, which contains nuclear localization signal, brings the viral DNA from nucleus to the cytoplasm while the BC1 serves to take the viral genome to the cell periphery for movement to the neighbouring cell through the plasmodesmata. 3) The monopartite begomoviruses do not contain DNA-B (which, in bipartite begomoviruses, encodes the proteins involved in movement) and it has been suggested that some of the proteins encoded by DNA-A take up the movement function. Based on studies on TYLCV and CLCuV, a model has been proposed for the movement of monopartite begomoviruses according to which the coat protein (CP) of monopartite begomoviruses serves as the functional equivalent of the NSP of bipartite begomoviruses 4) The present thesis deals with the biochemical characterization of the C4 protein of the monopartite begomovirus CLCuKV-Dab. As stated in statement (3) above, the V2 and C4 proteins of monopartite begomoviruses have been implicated to be involved in cell-to¬cell movement of the viral genome. In TYLCV, both the proteins were shown to be localized to the cell periphery and could move from one cell to another through the plasmodesmata. Further, the V2 protein of CLCuKV-Dab was shown to interact with the coat protein and bind to single stranded DNA. The biochemical properties of the C4 protein needed to be elucidated in order to strengthen the proposal of its probable involvement in movement. 5) The objectives of the present study were: i) Bioinformatic analysis of the C4 protein of CLCuKV-Dab ii) Biochemical characterization of ATPase and pyrophosphatase activities of the C4 protein. iii) Studies on the effect of V2-C4 interaction on the enzymatic properties of C4. iv) Functional characterization of C4 in planta. 6) The FoldIndex© and PONDR analyses predicted the C4 protein of CLCuKV-Dab to be natively unfolded. Similarly, in PSIpred analysis, most of the C4 protein was predicted to be a random coil without any well-defined secondary structure. Further, the protein sequence was analyzed using the motifscan server. However, no motif for any specific function was predicted in the C4 Protein. 7) The C4 gene was initially cloned into pRSET-C vector and overexpressed as histidine tagged protein and the solubility of the protein was tested in various conditions including low temperature (18° C) after inducing the expression of the protein, buffers of various pH and different salt concentrations but the protein remained insoluble. Subsequently, the protein was purified under denaturing conditions and attempts were made to refold the protein but the protein precipitated during refolding. In order to get the C4 protein in soluble form, the C4 gene was subcloned into pGEX-5X2 vector and overexpressed as a GST-tagged fusion protein (GST-C4). Some of the GST-C4 protein was soluble which was purified by using GST-bind resin. The purified fusion protein was observed as a 37 kDa band on SDS-PAGE gel. The purified protein was accompanied by a degraded product of approximately 30 kDa size. Both the intact GST-C4 protein and the degraded product were detected in western blot analysis using anti-GST antibody. 8) Because C4 has been implicated to be involved in movement of monopartite begomoviruses and movement is an energy requiring process, it was of interest to determine if GST-C4 possesses ATPase activity. The purified GST-C4 protein was incubated with γ-[32P]-ATP, the product of the reaction was separated by thin layer chromatography and the chromatography plate was analyzed by phosphorimager. The hydrolysis of ATP by GST-C4 and the release of inorganic phosphate was clearly observed, suggesting that GST-C4 might possess ATPase activity. 9) The reaction conditions for the ATPase activity of GST-C4 were standardized. The activity increased linearly upto 2.60μM of the protein. The optimum temperature and pH for the ATPase activity were found to be 30 C and 6.0 respectively. The activity was inhibited by EDTA, suggesting that it is dependent on divalent metal ions. The activity was stimulated by Mg+2, Mn+2 and Zn+2 but inhibited by Ca+2ions. Further, in the time course experiment, it was observed that the ATPase activity increased linearly upto one hour. 10) The Km, Vmax and kcat for the ATPase activity of GST-C4 were found to be 51.72 ± 2.5 µM, 7.2 ± 0.54 nmoles/min/mg of the protein and 0.27 min-1 respectively. Some of the other virally encoded ATPases have been found to exhibit kcat similar to that found for GST-C4 but it is much lower than those of most of the prokaryotic and eukaryotic ATPases (as mentioned in Table 3.3, page 100, chapter 3). Further, the presence of the degraded product did not affect the kinetic constants as described in chapter 3, pages 95¬-98. It is possible that the enzymatic activity might increase upon interaction with some ligand. 11) In the absence of any putative ATP binding motifs, systematic deletions from N-and C-termini were made to delineate the regions of C4 important for the ATPase activity. GST-N∆15-C4 and GST-N∆30-C4 exhibited approximately 70 % reduction in the ATPase activity while all the C-terminal deletion mutants (GST-C∆10-C4, GST-C∆20¬C4 and GST-C∆30-C4) retained the activity similar to the full length GST-C4 protein. This suggested that the N-terminal region of C4 may contain the residues important for the ATPase activity of GST-C4. 12) In the N-terminal region of C4, there is a sequence CSSSSR which closely resembles the sequence present at the active site of phosphotyrosine phosphatases (CXXXXXR). However, GST-C4 did not catalyze the hydrolysis of p-Nitrophenyl phosphate, a substrate analogue commonly used to assay phosphotyrosine phosphatase activity. It was of interest to determine if the cysteine and arginine in this sequence are important for the ATPase activity of GST-C4. GST-R13A-C4 exhibited an approximately two fold reduction in Vmax suggesting that R13 in C4 may be catalytically important for the ATPase activity of GST-C4. On the other hand, the C8A mutation did not affect the ATPase activity of GST-C4. 13) The GST-C4 protein was tested for its ability to hydrolyze several other phosphate containing compounds as mentioned chapter 2, pages 53-55. Among these compounds, GST-C4 catalyzed the hydrolysis of sodium pyrophosphate, that is, GST-C4 exhibited an inorganic pyrophosphatase activity. 14) The reaction conditions for the inorganic pyrophosphatase activity of GST-C4 were initially standardized. The pyrophosphatase activity of GST-C4 increased linearly upto 3.38 µM of the protein. The optimum temperature and pH for the pyrophosphatase activity were found to be 37° C and 7.0 respectively. The pyrophosphatase activity was inhibited by EDTA, suggesting that it is dependent on divalent metal ions. The activity was most efficiently stimulated by Mg+2, although it was also stimulated by Mn+2and Zn+2but inhibited by Ca+2ions. Thus, the pyrophosphatase activity of GST-C4 resembles the family I inorganic pyrophosphatases in metal ion requirements. Further, the pyrophosphatase activity increased linearly upto 1 hour 30 minutes. 15) The Km, Vmax and Kcat for the pyrophosphatase activity of GST-C4 were found to be 0.76 ± 0.04 mM, 141.16 ± 20 nmoles/min/mg of the protein and 5.2 minrespectively. The kcat for the pyrophosphatase activity was approximately 20 fold higher than that for the ATPase activity (0.27 min-1). 16) GST-N∆15-C4 and GST-N∆30-C4 exhibited >70 % reduction in the pyrophosphatase activity, a finding similar to that for the ATPase activity. On the other hand, while GST-C∆10-C4 retained the activity similar to the full length GST-C4 protein, GST-C∆20-C4 and GST-C∆30-C4 exhibited 20 % and 60 % reduction in the pyrophosphatase activity, respectively, as compared to the full length GST-C4 protein. This suggested that the C-terminal region of C4 may also contain the residues important for the pyrophosphatase activity of GST-C4. However, the C-terminal deletion mutants retained the ATPase activity similar to the full length protein. 17) The pyrophosphatase activity of GST-C4 was stimulated more than three fold by several reducing agents. The C4 protein contains only one cysteine (at position 8 in the C4 sequence). This was the first clue that the cysteine may be important for the pyrophosphatase activity of the GST-C4 protein. Further, the pyrophosphatase activity of GST-C4 did not exhibit preference for a particular kind of reducing agent like that of the pyrophosphatase activity in Streptococcus faecalis. 18) GST-C8A-C4 exhibited more than two fold reduction in Vmax, suggesting that the C8 may be catalytically important for the pyrophosphatase activity of GST-C4. On the other hand, the R13A mutation did not affect the pyrophosphatase activity of the GST-C4 protein. Thus, it is possible that during catalysis, the cysteine thiolate of C4 makes a 19) The pyrophosphatase activity of GST-C4 was inhibited by vanadate and fluoride. Vanadate was found to be a competitive inhibitor with Ki 0.33 mM while fluoride was a non-competitive inhibitor with Ki 2.82 mM. A comparative account of the two enzymatic activities of GST-C4 is presented in table 6.1

Precis som titeln avslöjar så handlar rapporten om att ta fram en AJAX-driven webbapplikation för sökning av sålda fastigheter. Gota Media AB har idag tillgång till en stor mängd lagrad information om sålda fastigheter i form av XML som kommer från Lantmäteriet. Enligt Gota Media så finns det ett stort behov av att skapa en sökbar webbapplikation till de nättidningar som de tillhandahåller som presenterar informationen för deras läsare. Syftet är att visa hur utvecklingen kan underlättas med hjälp av ramverket CodeIgniter och att ge svar på ett antal frågeställningar om hur webbapplikationen kan utvecklas för att uppfylla ett flertal krav från kunden. Genom att använda CodeIgniter tillsammans med ett flertal tekniker som Google Maps, CURL, AJAX och jQuery så kunde samtliga baskrav från kunden uppfyllas och ett bra resultat presenteras i form av en fullt fungerande webbapplikation. / Just as the title indicates this report is about making an AJAX driven web application for searching sold real estates. Today Gota Media AB has access to a large amount of information about sold real estates in XML format that comes from Lantmäteriet. According to Gota Media there is a great need to create a searchable web application for the online magazines that they provide to present the information to their readers. The aim of this report is to show how the development can be facilitated using the framework CodeIgniter and to provide answer to a number of question formulations on how the web application can be developed to meet several requirements from the customer. By way of using CodeIgniter with a majority group of techniques such as Google Maps, CURL, AJAX and jQuery all of the base requirements where implemented and a good result were presented in the form of a fully functional web application.

Doctor of Philosophy / Department of Agronomy / Gina Brown-Guedira / Allan K. Fritz / Aegilops tauschii, the D-genome donor of modern wheat, has served as an important source of genetic variation in wheat breeding. The objective of this research was to characterize and utilize multiple Ae. tauschii-derived pest resistance genes contained in the germplasm KS96WGRC40. Two Ae. tauschii-derived genes, H23 and Cmc4, provide resistance to the Hessian fly (HF) and wheat curl mite (WCM), respectively. A linkage analysis of a testcross population estimated 32.67% recombination between H23 and Cmc4 on chromosome 6DS in wheat indicating that the two genes are not tightly linked as previous mapping reports show. Haplotype data of recombinant lines and physical mapping of linked microsatellite markers located Cmc4 distal to H23. Haplotype data indicated that both KS89WGRC04 and KS96WGRC40 have the distal portion of 6DS derived from Ae. tauschii. Microsatellite primer pairs BARC183 and GDM036 were more useful than the previously published linked markers in identifying lines carrying Cmc4 and H23, respectively. Through phenotypic selection and advancement within the testcross population, three TC1F2:4 lines were identified as homozygous resistant for H23 and Cmc4 and have the complete terminal segment of 6DS from Ae. tauschii. Two lines are more desirable than the original germplasm releases and can serve as a source of resistance to both HF and WCM in an elite background. A linkage analysis of a segregating recombinant inbred line population identified an Ae. tauschii-derived gene of major effect conferring resistance to Septoria leaf blotch (STB) and another Ae. tauschii-derived gene of major effect conferring resistance to soil-borne wheat mosaic virus (SBWMV) in the germplasm KS96WGRC40. The STB resistance gene in KS96WGRC40 is located in the distal 40% of the short arm of chromosome 7D flanked by microsatellite markers Xgwm044 and Xbarc126. Two previously reported STB genes, Stb4 and Stb5, have been mapped to 7DS in the same region as the STB resistance gene in KS96WGRC40. The uniqueness of the STB resistance genes on 7DS is questionable. The SBWMV resistance gene in KS96WGRC40 is located on chromosome 5DL linked to microsatellite marker Xcfd010. The SBWMV resistance gene within KS96WGRC40 was derived from TA2397 via KS95WGRC33.

Les problèmes abordés et les résultats obtenus dans cette thèse se divisent en deux parties. La première concerne l'étude de la valeur asymptotique de jeux dépendant de la fréquence (jeux-FD). Nous introduisons un jeu différentiel associé au jeu-FD dont la valeur se ramène à une équation de Hamilton-Jacobi-Bellman-lsaacs. En affrontant un problème d'irrégularité à l'origine, nous prouvons l’existence de la valeur du jeu différentiel sur [0.1 ] et ceci nous permet de prouver que la valeur du jeu FD converge vers la valeur du jeu continu qui débute à l'état initial 0. Dans la deuxième partie, l'objectif fondamental est la décomposition de l'espace des jeux finis en sous espaces des jeux adéquats et plus faciles à étudier vu que leurs équilibres sont distingués. Cette partie est divisée en deux chapitres. Dans le premier chapitre, nous établissons une décomposition canonique de tout jeu arbitraire fini en trois composantes et nous caractérisons les équilibres approximatifs d'un jeu donné par les équilibres uniformément mixtes et en stratégies dominantes lesquels apparaissent sur ses composantes. Dans le deuxième chapitre, nous introduisons sur l'espace des jeux finis une famille de produits scalaires et nous définissons la classe des jeux harmoniques relativement au produit scalaire choisi dans cette famille. Inspiré par la décomposition de Helmholtz-Hodge appliquée aux jeux par Candogan et al. (2011), nous établissons une décomposition orthogonale de l'espace des jeux finis, par rapport au produit scalaire choisi, en les sous espaces des jeux potentiels, des jeux harmoniques et des jeux non­stratégiques c nous généralisons les résultats de Candogan et al. (2011). / The problems addressed and results obtained in this thesis are divided in two parts. The first part concerns the study of the asymptotic value of frequency-dependent games (FD-games). We introduce a differential game associated to the FD-game whose value leads to a Hamilton-Jacob-Bellman-lsaacs equation. Although an irregularity occurs at the origin, we prove existence of the value in the differential game played over [0.1 ], which allows to prove that the value of the FD-game, as the number of stages tend to infinity, converges to the value of the continuous-time game with initial state 0. ln the second part, the objective is the decomposition of the space of finite games in subspaces of suitable games which admit disguised equilibria and more tractable analysis. This part is divided in two chapters. In the first chapter, we establish a canonical decomposition of an arbitrary game into three components and we characterize the approximate equilibria of a given game in terms of the uniform equilibrium and the equilibrium in dominant strategies that appear in its components. In the second part, we introduce a family of inner products in the space of finite games and we define the class of harmonic games relatively to the chosen inner product. Inspired of the Helmholtz-Hodge decomposition applied to games by Candogan et al (2011 ), we establish an orthogonal decomposition of the space of finite games with respect to the chosen inner product, in the subspaces of potential harmonic and non-strategic games and we further generalize several results of Candogan et al (2011).