Este trabalho teve dois objetivos : verificar se a emissão de Tatos face a figuras variava segundo a dimensão cor, e estudar o vocabulário do pré-escolar.Para tal, trabalhou-se com 48 sujeitos, de quatro,cinco e seis anos. Em cada faixa etária havia dois sub-grupos, igualmente constituídos, quanto ao sexo e número de sujeitos, sendo a única diferença a ordem de apresentação do material colorido e preto-branco. o material consistiu de dois tipos de figuras: pranchas do PLDK -nível P (três séries), apresentadas coloridas e preto-branco e uma gravura. As crianças foram testadas individualmente em duas sessões. Os resultados indicam que: no PLDK nível P - a) de modo geral, não houve diferença de desempenho face as pranchas preto-branco e coloridas; b) houve várias correlações significantes entre cada série e o total, embora poucas inter-séries; c)quanto a seqüência de apresentação, apenas o grupo de quatro nos revelou ganho na seqüência preto-branco considerando a variável idade, de forma geral os mais novos tiveram desempenho inferior ao dos mais velhos. Na gravura: apenas o grupo de seis anos diferiu dos outros qrupos, não havendo diferença entre os sexos. Na comparação PLDK nível P e gravura, não foi encontrada nenhuma correlação significante. Tendo em vista a extensão da amostra, bem como a pouca informação científica sobre o desempenho no PLDK nível P, especialmente no Brasil, foi sugerida a realização de outras pesquisas. / The purposes of the present study were to investigate the influence of the dimension co1our in the emission of Tacts, face to pictures, and the vocabulary of preschool children. A group of forty-eight children of four, five, and six years old were the subjects during the research. In each age group the subjects were usually divided into two groups, the only difference being the order of presentation of coloured or black-white picture cards. The results in the PLDK indicate that : a)there were no significant differences in the performance , as a whole , face to colored or black-white cards ;. b) there were various significant correlations between achievement in each serie and the whole performance o The inter-series correlations however , were weak; c) further to the sequence of presentation , the results indicate that only the four years old group revealed better performance when the coloured set was presented showing the black-white one; d) regarding the sex variable, only once there was a difference between boys and girls e)considering the age variable, the younger children achieved a lower score than the older ones. The results collected after the presentation of the printed picture showed that the six years old group presented higher score when compared to the younger groups. The latter ones presented no differences among themselves. Considerering the variable sex, no difference was found. The scores particularly achieved by the presentation of the cards and printed picture were also compared and no significant correlation was found. Taking into consideration of the sample and lack of scientific information about performance in the PLDK Level P, mainly in Brazil, further research on the subject is suggested.

Šiuo metu viena iš labiausiai bei sparčiausiai besivystančių technologijos krypčių yra mobiliesiems telefonams, planšetiniams kompiuteriams bei multimedijos įrenginiams skirta programinė įranga. Vartotojų susidomėjimas šia sritimi bei mobiliųjų įrenginių techninės įrangos tobulėjimas skatina vis daugiau IT kompanijų plėtoti savo veiklą šioje srityje. Viena iš didžiausių klaidų, kurias yra sunkiausia ištaisyti, yra pirminėje projekto stadijoje neteisingai pasirinktos technologijos. Šiame darbe apžvelgiamos ir palyginamos trijų populiariausių, į mobiliuosius įrenginius diegiamų operacinių sistemų: Android, iOS bei Windows Phone programų kūrimo sąsajos ir nustatomi jų privalumai bei trūkumai. Vertinimai yra atliekami atsižvelgiant į operacinės sistemos architektūrą, programų kūrimo įrankius, suderinamumą su technine įranga, programų derinimo galimybėmis, saugumo užtikrinimu, grafinės vartotojo sąsajos kūrimu, daugiakalbystės palaikymu, animacijos, garsų bei video medžiagos pateikimu, HTML turinio atvaizdavimu, integracija su žemėlapiais, vartotojo buvimo vietos nustatymu, sensorių bei tinklų pasiekiamumu, foninių procesų kūrimu, duomenų išsaugojimo bei apsikeitimo su kitomis programomis galimybėmis. Tyrimo metu nustatyta, kad Android turi geriausias sąsajas kurti foninius procesus bei integruotis su kitomis programomis. iOS turi geriausius įrankius bei grafinės vartotojo sąsajos kūrimo priemones, o Windows Phone turi patogiausia karkasą darbui su multimedija, žemėlapiais bei... [toliau žr. visą tekstą] / At a present time, one of the most developing area of technology is software for mobile phones, tablets and multimedia devices. Growing numbers of users and improved hardware makes more and more companies to expand their activity in this market. One of the biggest mistakes, that is very hard to solve, is badly chosen technologies in a beginning stage of the projects. The main objective of this project is to compare three of the most popular operating systems Android, iOS and Windows Phone software development kits and to determinate their advantages and disadvantages. Analysis is made based on operating system architecture, tools, compatibility with hardware, debugging, security, graphical user interface, multilanguage support, animation, sounds, video, HTML preview, interaction with maps and user location, sensors, networks, background processes, data persistence and integration with another software. In this research was identified that Android has best interfaces to create background processes and share data between programs. iOS has best tools and components for graphical user interface and Windows Phone has best framework to work with multimedia, maps and user location services.

Este trabalho teve dois objetivos : verificar se a emissão de Tatos face a figuras variava segundo a dimensão cor, e estudar o vocabulário do pré-escolar.Para tal, trabalhou-se com 48 sujeitos, de quatro,cinco e seis anos. Em cada faixa etária havia dois sub-grupos, igualmente constituídos, quanto ao sexo e número de sujeitos, sendo a única diferença a ordem de apresentação do material colorido e preto-branco. o material consistiu de dois tipos de figuras: pranchas do PLDK -nível P (três séries), apresentadas coloridas e preto-branco e uma gravura. As crianças foram testadas individualmente em duas sessões. Os resultados indicam que: no PLDK nível P - a) de modo geral, não houve diferença de desempenho face as pranchas preto-branco e coloridas; b) houve várias correlações significantes entre cada série e o total, embora poucas inter-séries; c)quanto a seqüência de apresentação, apenas o grupo de quatro nos revelou ganho na seqüência preto-branco considerando a variável idade, de forma geral os mais novos tiveram desempenho inferior ao dos mais velhos. Na gravura: apenas o grupo de seis anos diferiu dos outros qrupos, não havendo diferença entre os sexos. Na comparação PLDK nível P e gravura, não foi encontrada nenhuma correlação significante. Tendo em vista a extensão da amostra, bem como a pouca informação científica sobre o desempenho no PLDK nível P, especialmente no Brasil, foi sugerida a realização de outras pesquisas. / The purposes of the present study were to investigate the influence of the dimension co1our in the emission of Tacts, face to pictures, and the vocabulary of preschool children. A group of forty-eight children of four, five, and six years old were the subjects during the research. In each age group the subjects were usually divided into two groups, the only difference being the order of presentation of coloured or black-white picture cards. The results in the PLDK indicate that : a)there were no significant differences in the performance , as a whole , face to colored or black-white cards ;. b) there were various significant correlations between achievement in each serie and the whole performance o The inter-series correlations however , were weak; c) further to the sequence of presentation , the results indicate that only the four years old group revealed better performance when the coloured set was presented showing the black-white one; d) regarding the sex variable, only once there was a difference between boys and girls e)considering the age variable, the younger children achieved a lower score than the older ones. The results collected after the presentation of the printed picture showed that the six years old group presented higher score when compared to the younger groups. The latter ones presented no differences among themselves. Considerering the variable sex, no difference was found. The scores particularly achieved by the presentation of the cards and printed picture were also compared and no significant correlation was found. Taking into consideration of the sample and lack of scientific information about performance in the PLDK Level P, mainly in Brazil, further research on the subject is suggested.

This master thesis presents the design of an implementation of a working prototype for an augmented motion capture acting environment. Motion capture (MoCap), the recording of movements to be applied to characters or objects in computer graphics simulations, is widely used in video games, advertisement, and cinema. MoCap is realized through different techniques, where one common problem is the efficiency to capture actor’s motion performances. To capture motions without obstacles for the motion detectors, actors act blindly, without graphic references while acting. Mistakes or a poor correlation between the actors performances and the computer graphics simulation requires the scene either to be taken many times or to be corrected afterwards in time-consuming post-production. These issues slow down the production process or lead to a low quality product.We suggest that one way to limit the problem of efficiency in motion capture is to let actors perform in a virtual environment. To this end, this master thesis presents a simple prototypeenvironment with the goal to support actors’ performances to improve motion capture efficiency. The idea is to surround an actor with four screens which display the virtual environment. A Microsoft Kinect camera is utilized for motion capture. Gestures are usedto trigger interactions between the actor and the virtual environment. Furthermore, the thesis explores the applicability of open source libraries, game engines, and inexpensivegeneral purpose technology. We suggest, as indicated by demonstrated validity, that virtual environments and augmented motion capture improve the conditions for actors, thus providing more efficient motion capture shots. However, further research and quantitative measurements are needed to understand and fully evaluate the effect of the presented prototype tool.

Master’s thesis deals with the design of development kit for communication between a microcontroller and a computer using USB, Bluetooth, WiFi and Ethernet interfaces. In the theoretical introduction is the analysis of theese interfaces and the interfaces used for communication by the microcontroller. In the next part, components for the development kit are selected. Then a wiring diagram and the printed circuit board is designed. Next, the firmware design is described. The last chapter deals with the implementation and testing of the development kit. The appendix contains a proposal for a laboratory task to introduce the development kit to students.

Οι συστοιχίες προγραμματιζόμενων πυλών (FPGAs) αποτελούν μια σημαντική τεχνολογία, η οποία επιτρέπει στους σχεδιαστές κυκλωμάτων την παραγωγή συγκεκριμένου σκοπού ολοκληρωμένων κυκλωμάτων σε σύντομο χρόνο. Tα σημαντικότερα των χαρακτηριστικών τους είναι η αρχιτεκτονική τους και η δυνατότητα σχεδιασμού τους μέσω υπολογιστών, η χαμηλή κατανάλωση ισχύος καθώς και το μικρό χρονικό διάστημα που απαιτείται για τον επαναπρογραμματισμό τους. Τα FPGAs είναι κατάλληλα σχεδιασμένα για ψηφιακές εφαρμογές φιλτραρίσματος. Η πυκνότητα των προγραμματιζόμενων αυτών συστημάτων είναι τέτοια ώστε πολύ μεγάλος αριθμός αριθμητικών πράξεων όπως αυτές που προκύπτουν μέσω ψηφιακού φιλτραρίσματος να μπορεί να εφαρμοστεί σε μία μόνο συσκευή. Τα πλεονεκτήματα των FPGA στην υλοποίηση ψηφιακών φίλτρων είναι μεταξύ άλλων οι υψηλότεροι ρυθμοί δειγματοληψίας από παραδοσιακούς DSP chip, το χαμηλότερο κόστος από μια μέτρια ASIC (Application Specific Integrated Circuit, Kύκλωμα οριζόμενο από εφαρμογή) για εφαρμογές μεγάλου όγκου, καθώς και η μεγαλύτερη ευελιξία από όλες τις εναλλακτικές προσεγγίσεις για την υλοποίηση των FIR φίλτρων. Σπουδαιότερο όλων είναι ότι προγραμματίζονται μέσα στο σύστημα και έχουν δυνατότητα επαναπρογραμματισμού για την υλοποίηση διαφόρων εναλλακτικών λειτουργιών φιλτραρίσματος. Στόχος της παρούσας διπλωματικής είναι να συνδυασθούν τεχνικές VLSI και ψηφιακής επεξεργασίας σήματος και μέσω κατανόησης της αρχιτεκτονικής του υπολογιστή να δημιουργηθεί μια χρήσιμη εφαρμογή. Επιλέχθηκε για τον λόγο αυτό: α) η ανάπτυξη ενός FIR φίλτρου σε γλώσσα περιγραφής υλικού, β) υλοποίησή του σε FPGA, γ) εισαγωγή αυτού σε ενσωματωμένο σύστημα και σύνδεση σε διάδρομο δεδομένων επεξεργαστή και δ) έλεγχος του φίλτρου με τη βοήθεια του επεξεργαστή μέσω γλώσσας υψηλού επιπέδου. Η συγγραφή του κώδικα του φίλτρου έγινε σε γλώσσα VHDL, με structural μεθόδους και η προσομοίωση του συστήματος στο Modelsim. Επιπροσθέτως χρησιμοποιήθηκε ο Project Navigator ISE της Xilinx για τον έλεγχο του κώδικα αλλά και τον προγραμματισμό του FPGA Spartan 3E Starter Board. Χρησιμοποιήθηκαν ακόμα τα υποπρογράμματα Plan Ahead και ChipScope Pro του ISE ώστε να ελεγχθεί η λειτουργία του κυκλώματος στο FPGA. To κύκλωμα τελικά εισάγεται σε ενσωματωμένο σύστημα με τη βοήθεια του εργαλείου σχεδίασης EDK της Xilinx και ελέγχεται η λειτουργία του προγραμματίζοντας τον επεξεργαστή Microblaze. Ακόμα ελέγχεται η λειτουργία του φίλτρου για διαφορετικούς συντελεστές FIR φίλτρων που χρησιμοποιούν διαφορετικά παράθυρα και συγκρίνονται οι «ιδανικές» τιμές που παράγονται από το Matlab με αυτές που παράγονται από το φίλτρο. Τέλος μετράται η ενέργεια (δυναμική και στατική) που καταναλώνεται κατά τη λειτουργία του κυκλώματος στο FPGA με τη βοήθεια του XPower Analyzer. / Field-programmable gate arrays (FPGAs) is a technology of great importance that allows the designers to produce specific purpose integrated circuits in a limited amount of time. The most important of their characteristics are their architecture and the ability of their design with the help of computers, the low power dissipation, as well as the need of a short amount of time to be reprogrammed. FPGAs are properly designed for digital filtering applications. The density of these programmable systems is such that a great amount of numerical calculations such as those that result via digital filtering can be applied to one device only. The advantages of FPGAs as for the implementation of digital filters is between others the great rates of sampling compared to traditional DSP chips, their low cost compared to a moderate ASIC (Application Specific Integrated Circuit) for applications that take up a large area, as well as the flexibility compared to alternative approaches for the implementation of FIR filters. Their most important characteristic is that they can be programmed on-chip and that they have the ability of being reprogrammed for the implementation of different filtering purposes. The aim of this thesis is to combine VLSI techniques and digital signal processing techniques and via the understanding of the computer architecture to create a useful application. To fulfill that purpose: a) a FIR filter was designed with the use of a hardware description language b) the filter was implemented by using an FPGA c) the filter was imported to an embedded system and it was connected to the bus of a microprocessor d) the filter was controlled by the microprocessor via a high-level programming language. The filter was designed using the VHDL language, specifically using structural methods, and its simulation was performed with Modelsim. Also the Project Navigator ISE of Xilinx was used to correct unwanted warnings and to program the FPGA Spartan 3E Starter Board. Some other subprograms of ISE were also used, such as Plan Ahead and ChipScope Pro in order to check the performance of the filter. The circuit is finally imported to an embedded system using the Embedded Developer’s Kit (EDK) of Xilinx. Microblaze was the microprocessor that was used to control the filter’s performance. Additionally, the performance of the filter is checked by using different coefficients of FIR filters by different windowing methods. The ideal values that are produced from Matlab are compared to those of the filter. Finally the power dissipation (static and dynamic) of the filter is measured using XPower Analyzer.

This thesis contains description of the present methods and algoritms for measuring the quality of telephone call on the PBX Asterisk. Further develop the concept of a system for measuring and implementing the call embbeded system VOIPAC PXA270M. Based on theoretical analysis is carried out discussions between C, Java and PHP,which results in the selection of appropriate programming language suitable for implementation in embedded system. The concept is realized by creating an application written in a particular programming language. Part of this work is verification created application using experimental measurments of telecommunications system. The results of experimental measurements are discussed in the final evaluation.

This thesis describes design and manufacture of measuring and communication modules for CompactRIO platform. In the first section is described platform from National Instrument suitable for measurement and control technology. There is written more fact about CompactRIO. The second part is focused on description of the hardware requirements needed to construct the module, communication and working modes. The third part describes information about support programs. At the end of third part is describes practical application of input digital card. Next section consists of practical proposal modules (input / output analog module, GPS modulu) and achievements.

A wireless sensor network consists of small, limited-resource embedded systems exchanging environment data and activating controls. These networks can be deployed in hostile environments to monitor wildlife habitats, implemented in factories to locate mobile equipment, and installed in home environments to optimize the use of utilities. Each of these scenarios requires network security to protect the network data. The IEEE 802.15.4 standard is designed for WSN communication, yet the standard states that it is not responsible for defining the initialization, distribution, updating, or management of network public keys. Individuals seeking to research security topics will find that there are many 802.15.4-compliant development hardware kits available to purchase. However, these kits are not easily compared to each other without first-hand experience. Further, not all available kits are suitable for research in WSN security. This thesis evaluates a broad spectrum of 802.15.4 development kits for security studies. Three promising kits are examined in detail: Crossbow MICAz, Freescale MC1321x, and the Sun SPOT. These kits are evaluated based on their hardware, software, development environment, additional libraries, additional tools, and cost. Recommendations are made to security researchers advising which kits to use depending on their design needs and priorities. Suggestions are made to each company on how to further improve their kits for security research.

The demand for high-speed networking applications has made Network Processors (NPs) and Central Computing Units (CPUs) increasingly parallel and complex, containing numerous on-chip processing cores. This parallelism can only be exploited fully by the underlying packet scheduler by efficiently utilizing all the available cores. Classically, packets have been directed towards the processing cores at flow granularity, making them susceptible to traffic locality. Ensuring a good load balance among the processors improves the application’s throughput and packet loss characteristics. Hence, packet-level schedulers dispatch flows to the processing core at a packet granularity to improve the load balance. However, packet-level scheduling combined with advanced parallelism introduces out-of-order departure of the processed packets. Simultaneously optimizing both the load balance and packet order is challenging. In this degree project, we micro-benchmark the DPDK’s (Dataplane Development Kit) event scheduler and identify many performance and scalability bottlenecks. We find the event scheduler consumes around 40% of the cycles on each participating core for event scheduling. Additionally, we find that DSW (Distributed Software Scheduler) cannot saturate all the workers with traffic because a single NIC (Network Interface Card) queue is polled for packets in our test setup. Then we propose Diffuser, an event scheduler for DPDK that combines the functional properties of both the flow and packet-level schedulers. The diffuser aims to achieve optimal load balance while minimizing out-of-order packet transmission. Diffuser uses stochastic flow assignments along with a load imbalance feedback mechanism to adaptively control the rate of flow migrations to optimize the scheduler’s load distribution. Diffuser reduces packet reordering by at least 65% with ten flows of 100 bytes at 25 MPPS (Million Packet Per Second) and at least 50% with one flow. While Diffuser improves the reordering performance, it slightly reduces throughput and increases latency due to flow migrations and reduced cache locality / Efterfrågan på höghastighets-nätverksapplikationer har gjort nätverkspro-cessorer (NP) och centrala beräkningsenheter (CPU:er) alltmer parallella, komplexa och innehållande många processorkärnor. Denna parallellitet kan endast utnyttjas fullt ut av den underliggande paketschemaläggaren genom att effektivt utnyttja alla tillgängliga kärnor. Vanligtvis har paketschemaläggaren skickat paket till olika kärnor baserat på flödesgranularitet, vilket medför trafik-lokalitet. En bra belastningsbalans mellan processorerna förbättrar applikationens genomströmning och minskar förlorade paket. Därför skickar schemaläggare på paketnivå istället flöden till kärnan med en paketgranularitet för att förbättra lastbalansen. Schemaläggning på paketnivå kombinerat med avancerad parallellism innebär dock att de behandlade paketen avgår i oordning. Att samtidigt optimera både lastbalans och paketordning är en utmaning. I detta examensprojekt utvärderar vi DPDKs (Dataplane Development Kit) händelseschemaläggare och hittar många flaskhalsar i prestanda och skalbarhet. Vi finner att händelseschemaläggaren konsume-rar cirka 40 % av cyklerna på varje kärna.Dessutom finner vi att DSW (Schemaläggare för distribuerad programvara) inte kan mätta alla arbetande kärnor med trafik eftersom en enda nätverkskorts-kö används i vår testmiljö. Vi introducerar också Diffuser, en händelse-schemaläggare för DPDK som kombinerar egenskaperna hos både flödes-och paketnivåschemaläggare. Diffuser ämnar att uppnå optimal lastbalans samtidigt som den minimerar paketöverföring i oordning. Den använder stokastiska flödestilldelningar tillsammans med en återkopplingsmekanism för lastobalans för att adaptivt kontrollera flödesmigreringar för att optimera lastfördelningen. Diffuser minskar omordning av paket med minst 65 % med tio flöden på 100 byte vid 25 MPPS (Miljoner paket per sekund) och minst 50 % med endast ett flöde. Även om Diffuser förbättrar omordningsprestandan, minskar den genomströmningen något och ökar latensen på grund av flödesmigreringar och minskad cache-lokalitet.