Made available in DSpace on 2015-04-14T13:09:43Z (GMT). No. of bitstreams: 1 452890.pdf: 19996160 bytes, checksum: 73d3af87232bcae9613b5ad369f92dcf (MD5) Previous issue date: 2013-01-04 / Hylodidae is an anuran family composed of genera Crossodactylus, Hylodes, and Megaelosia, commonly known as torrent frogs , and known to range from northeastern Brazil through southern Paraguay and northern Argentina. Crossodactylus, previously referred to as the most taxonomic problematic of the three, is comprised of 11 small-sized (but for C. grandis) species, currently divided among three species groups: the C. gaudichaudii, C. trachystomus, and C. schmidti groups, the first of which contains the majority of recognized species. The relationship between Hylodidae and other anuran families has been extensively discussed, and hypotheses have been varied. Nonetheless, the monophyly of the group seems well corroborated, and has been recovered in several independent phylogenetic studies. However, despite recurrent mentions to the problematic systematics of Crossodactylus, its phylogenetic relationships remain untested. Furthermore, the only proposed synapomorphy for the group is the absence of the quadratojugal bone, a hypothesis which has already been refuted in literature. In view of the problems still revolving around Crossodactylus, this study aimed to test the monophyly of the genus and its species groups, while clarifying relationships among its species, and among itself and the remainder of hylodid genera. For that, a phylogenetic analysis of 3 mitochondrial and 5 nuclear genes of different degrees of variability was performed on software POY 4.1.2.1 under dynamic homology, employing the maximum parsimony optimality criterion. 72 outgroup taxa, and of 88 ingroup terminals were included. Of the outgroup, 21 taxa comprised of 61 terminals were sequenced by this study. All ingroup sequences were generated in this study, except for those of C. schmidti, for which sequences were already available on GenBank. A total of 14 equally most parsimonious trees of 25,508 steps were found, the conflicts of which were restricted to relationships between terminals of the ingroup. The monophyly of Hylodidae was corroborated once more. Megaelosia was found to be paraphyletic with respect to Hylodes, which is monophyletic. Crossodactylus was recovered as a monophyletic group, sister to the clade comprising the other two hylodid genera. The species groups as currently defined were found not to reflect the actual relationships among species, with the C. gaudichaudii group being paraphyletic with respect to C. schmidti, and likely to C. trachystomus. Also, several species complexes were found within Crossodactylus, and species believed to be widespread were found to be actually several narrowly distributed species. 14 putative species were discovered in addition to the six recognized species sampled. The placement of the five recognized species not sampled by this study remains unknown and, as most of these were last collected in the 1970 1980s, future studies will require morphological evidence in order to address this question. / Hylodidae ? uma fam?lia de anuros composta dos g?neros Crossodactylus, Hylodes e Megaelosia, conhecidos popularmente como r?zinhas-do-riacho, e cuja ?rea de distribui??o conhecida vai do nordeste do Brasil at? o norte da Argentina, atrav?s do sul do Paraguai. Crossodactylus, conhecido como o g?nero de taxonomia mais problem?tica dos tr?s, ? composto de 11 esp?cies de pequeno tamanho (exceto por C. grandis), atualmente divididas entre tr?s grupos de esp?cies: os grupos C. gaudichaudii, C. trachystomus e C. schmidti, o primeiro dos quais cont?m a maioria das esp?cies reconhecidas. O relacionamento entre Hylodidae e outras fam?lias de anuros tem sido extensamente discutido, com hip?teses variadas. Ainda assim, a monofilia do grupo parece bem corroborada e tem sido recuperada em diversos estudos filogen?ticos independentes. Contudo, apesar das recorrentes men??es ? sistem?tica problem?tica de Crossodactylus, suas rela??es filogen?ticas permanecem n?o testadas. Al?m disso, a ?nica sinapomorfia proposta para o grupo ? a aus?ncia do osso quadradojugal, hip?tese j? refutada na literatura. Tendo em vista os problemas ainda presentes em torno de Crossodactylus, o presente estudo objetivou testar a monofilia do g?nero e seus grupos de esp?cies, ao mesmo tempo buscando esclarecer os relacionamentos entre esp?cies do g?nero e entre esse e os demais g?neros de Hylodidae. Para tanto, uma an?lise filogen?tica de tr?s genes mitocondriais e cinco genes nucleares de diferentes graus de variabilidade foi realizada atrav?s do software POY 4.1.2.1, sob a implementa??o de homologia din?mica, empregando o crit?rio de otimalidade de m?xima parcim?nia. 72 t?xons do grupo externo e 88 terminais do grupo interno foram inclu?dos. Do grupo externo, 21 t?xons compostos de 61 terminais foram sequenciados nesse estudo. Todas as sequ?ncias do grupo interno foram geradas nesse estudo, exceto por aquelas de C. schmidti, para o qual sequ?ncias j? estavam dispon?veis no GenBank. Um total de 14 ?rvores igualmente maximamente parcimoniosas de 25.508 passos foi encontrado, os conflitos das quais se restringiam a rela??es entre terminais do grupo interno. A monofilia de Hylodidae mais uma vez foi corroborada. O g?nero Megaelosia foi encontrado como parafil?tico em rela??o a Hylodes, o qual ? monofil?tico. Crossodactylus foi recuperado como um grupo monofil?tico, irm?o do clado composto pelos dois outros g?neros. Descobriu-se que os grupos de esp?cies como definidos atualmente n?o refletem os relacionamentos entre esp?cies, com o grupo C. gaudichaudii sendo parafil?tico com respeito ao grupo C. schmidti e, provavelmente, ao grupo C. trachystomus. Al?m disso, diversos complexos de esp?cies foram encontrados em Crossodactylus e descobriu-se que esp?cies cuja distribui??o acreditava-se ser extensa s?o na verdade compostas de v?rias esp?cies de distribui??o restrita. 14 esp?cies putativas foram descobertas em adi??o ?s seis esp?cies reconhecidas amostradas. O posicionamento das cinco esp?cies reconhecidas n?o amostradas nesse estudo permanece desconhecido e, como a maioria destas n?o ? coletada desde os anos 1970 1980, estudos futuros necessitar?o de evid?ncia morfol?gica de modo a endere?ar essa quest?o.

Diese Arbeit untersucht die Dauer von Bootvorgängen auf Linux-Systemen vom Einschalten des Rechners bis zur Benutzeranmeldung. Zeitintensive Abschnitte des Bootvorganges werden untersucht und Methoden zur Beschleunigung diskutiert. Dies beinhaltet eine Analyse verschiedener BIOS Versionen, der Kernel-Initialisierung und unterschiedliche Ansätze, Dienste zu starten. Es werden Startvorgänge eines gewöhnlichen Desktop-Systems mit einem eingebetteten VIA EPIA-ML-6000EA Mini-ITX System verglichen. / This research project evaluates startup times of the linux boot process from power-on until user login. Time consuming parts of the boot process are investigated and methods how to speed up the whole process are discussed. It includes an analysis and comparison of different BIOSes, the kernel startup sequence and different approaches to start user space services. This project also compares the startup times of everyday desktop systems with the EPIA-ML6000EA Mini-ITX board, an embedded x86-compatible system.

Pas de résumé français

Šiame darbe analizuojamos pasaulinio semantinio tinklo technologijos dalykinės srities žinioms užrašyti ir valdyti. Darbo metu buvo papildyta dalykinės srities ontologija bei sukurta nauja sistėminė vartotojo sąsajos formavimo ontologija, kuri palaiko daugiakalbystę. Realizuotos ir aprobuotos užklausos ir automatizavimo procesai dirbantys su minėtomis ontologijomis. Darbo vykdymo metu sukauptos žinios buvo surinktos, susistemintos ir pateikiamos kaip darbo metodika. Remiantis šia metodika sukurta eksperimentinė sistema, skirta padėti identifikuoti su BIOS klaidomis susijusias problemas ir/arba operacinių sistemų (OS) sutrikimo priežastis ir jas spręsti. Apie sukurtą sistemą buvo perskaitytas pranešimas konferencijoje „Mokslas ir studijos 2010: teorija ir praktika“, kuri įvyko Šiaurės Lietuvos kolegijoje. Metodiką galima pritaikyti bet kokiai dalykinei sričiai, tiek realizuojant e-mokymo(si) sistemose probleminio mokymosi principus, tiek paramos paslaugų teikimo prekės ar produkto vartotojui sferoje. / This work examines the global semantic web technologies in the subject area knowledge and record management. Work was completed in the subject area and Ontology, a new user interface making systemic ontology, which supports multilingualism. Realized and dealer inquiries, and automate processes in working with these ontologies. Work during the accumulated knowledge has been collected, systematised and presented as a working methodology. Based on the methodology developed an experimental system designed to help identify errors in the BIOS-related problems and / or operating systems (OS) and cause disruption to solve them. This system of notification was read in the conference of "Education and training 2010: Theory and Practice", which took place in Northern Lithuania College. The approach can be applied to any subject area, and implement e-learning (learning) problem of learning the principles of systems and support services or goods to the consumer product area.

Made available in DSpace on 2014-12-17T14:10:28Z (GMT). No. of bitstreams: 1 ThiagoCSOP_DISSERT.pdf: 1144782 bytes, checksum: be3dbb51350da1787be38ffb793e4e0a (MD5) Previous issue date: 2012-09-26 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / Historically, ever since the pre-Darwinian naturalists interspecific competition was considered the main force responsible for structuring ecological communities. This interpretation lost strength in the late 70s and throughout the 80s giving room for other views, which consider other factors such as predation, parasitism and the phylogenetic inertia more important. Studies on changes in the trophic niche of a species are still uncommon in general and especially in amphibians. Species considered generalist might actually be a group of individual specialists, or individuals that specialize in a particular category of prey during a period of scarcity of resources, thus reducing intraspecific competition. This work studied the community structure of litter amphibians and trophic variation along the dry and rainy seasons in a population of Leptodactylus macrosternum. Sixteen-litter frog species were studied for their diet. Two central assumptions were tested: 1a) if the community is structured in the niche trophic level, and 1b) if there is a significant difference in the use of food resources by different species (i.e. if the community is structured), the observed structure is the result of ecological interactions or just the current phylogenetic inertia of species. Finally, 2) if there is variation in food resource use between seasons for L. macrosternum. The community showed a structure with respect to the use of food resources, and this structure persisted after taking into account the phylogenetic relationships among species. The diet of Leptodactylus macrosternum varied with the seasons, with a significant degree of individual specialization for the dry season. Patterns of a local community are important to understand its dynamics, and this may play a role in larger- scale processes. Therefore, the studies in community ecology are fundamental to understand and eventually restoring degraded areas / Historicamente, a competi??o interespec?fica foi considerada a principal for?a ecol?gica respons?vel pela estrutura??o de comunidades. Essa interpreta??o perdeu for?as no final dos anos 70 e ao longo dos anos 80 e deu espa?o para outras vis?es, onde fatores como preda??o, parasitismo e a in?rcia filogen?tica mostraram-se importantes. Estudos sobre varia??es intraespec?ficas do nicho tr?fico s?o pouco comuns de uma forma geral e principalmente em anf?bios. Esses estudos tem mostrado que esp?cies antes chamadas generalistas podem ser, na verdade, um grupo de indiv?duos especialistas, ou ainda indiv?duos que se especializam em uma determinada categoria de presa durante um per?odo de escassez de recursos, reduzindo assim a competi??o intraespec?fica. O presente trabalho ? dividido em dois cap?tulos. No primeiro n?s estudamos a estrutura??o tr?fica da taxocenose de anf?bios. Para tanto, n?s analisamos a dieta de 16 esp?cies de anuros de serapilheira. Os dados foram usados para avaliar duas perguntas: 1a) se a comunidade est? estruturada no nicho tr?fico e 1b) em que grau a estrutura observada ? fruto de intera??es ecol?gicas atuais e da in?rcia filogen?tica das esp?cies em quest?o. No segundo cap?tulo n?s estudamos a varia??o tr?fica da esp?cie Leptodactylus macrosternum e testamos se existe varia??o no uso dos recursos alimentares entre os per?odos seco e chuvoso. A comunidade mostrou estrutura??o com rela??o ao uso dos recursos alimentares e esta estrutura??o ? influenciada pelas rela??es filogen?ticas entre as esp?cies. A dieta de Leptodactylus macrosternum variou conforme os per?odos seco e chuvoso, com um grau de especializa??o individual significativo para o per?odo seco. A din?mica de uma comunidade local pode atuar em processos de maior escala. Logo, o estudo de comunidades ? fundamental para se entender e eventualmente restaurar ?reas degradadas

Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2018-03-12T18:27:34Z No. of bitstreams: 1 AntonioFerreiraDeMeloJunior_DISSERT.pdf: 1422934 bytes, checksum: dc68cbabf23b0793dbd2dd4fb498bc68 (MD5) / Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2018-03-16T13:01:28Z (GMT) No. of bitstreams: 1 AntonioFerreiraDeMeloJunior_DISSERT.pdf: 1422934 bytes, checksum: dc68cbabf23b0793dbd2dd4fb498bc68 (MD5) / Made available in DSpace on 2018-03-16T13:01:28Z (GMT). No. of bitstreams: 1 AntonioFerreiraDeMeloJunior_DISSERT.pdf: 1422934 bytes, checksum: dc68cbabf23b0793dbd2dd4fb498bc68 (MD5) Previous issue date: 2017-09-19 / O objetivo desta disserta??o ? discutir o processo de autonomiza??o da assinatura ?Gustavo Barroso? por meio do exame do discurso narrativo presente em Ideias e Palavras, em A Ronda dos S?culos e em Os Protocolos dos S?bios de Si?o, obras publicadas por Gustavo Adolfo Dodt Luiz Guilherme da Cunha Barroso entre 1917 e 1936. Defendemos a ideia de que Os Protocolos dos S?bios de Si?o constituem um novo texto produzido por Barroso a partir dos insumos das suas obras anteriores, e n?o simplesmente uma tradu??o da vers?o francesa do documento-marco do antissemitismo contempor?neo. Nesse intuito, baseamo-nos nos textos da Nova Hist?ria Pol?tica, da hist?ria do espa?o nacional e da Religi?o Pol?tica para percebermos como essa assinatura vai se adensando a partir da tese do imperialismo judaico e da afirma??o da nacionalidade brasileira, tendo em vista a produ??o de um discurso narrativo contra os judeus. Em respeito a isso, utilizamos como referencial metodol?gico os livros Narrative Discourse: An Essay in Method (1990) e Paratexts: Thresholds of interpretation (2001), de G?rard Genette, e dedicamos um cap?tulo da disserta??o para cada obra. No primeiro cap?tulo, caracterizamos o discurso narrativo de Ideias e Palavras, mostrando como a dubiedade da assinatura ?Jo?o do Norte (Gustavo Barroso)? explicita uma aprecia??o positiva dos judeus. No segundo cap?tulo, caracterizamos o discurso narrativo de A Ronda dos S?culos pensando a autonomia da assinatura e o processo de negativa??o dos judeus. No terceiro cap?tulo, analisamos o discurso narrativo dos Protocolos dos S?bios de Si?o e discutimos que a assinatura ?Gustavo Barroso?, j? aut?noma, assume a forma de antijuda?smo e antissemitismo. Demonstramos a continuidade da escala internacional como compreens?o espacial e temporal, a descri??o de ambientes f?sicos como pressuposto da psicologia dos personagens, a inser??o de p?ssaros como marca??o das clivagens na narrativa, o aparecimento da guerra como constante hist?rica, cita??o de judeus para discorrer sobre os judeus e a compreens?o da natureza humana como tendente ? destrui??o. Estudar os escritos de Gustavo Barroso ? importante na medida em que ele ? considerado o expoente do antissemitismo brasileiro, foi ele quem concatenou teoricamente o confluxo entre catolicismo e integralismo, de modo que ele se tornou um dos autores mais citados pelos antissemitas contempor?neos como uma forma legitimar as persegui??es ?s minorias e o pensamento autorit?rio. / This study aims discuss the process of autonomy of signature ?Gustavo Barroso? with the exam of the Narrative discourse present in Ideias e Palavras, A Ronda dos S?culos and Os Protocolos dos S?bios de Si?o, books published by intellectual Brazilian Gustavo Adolfo Dodt Luiz Guilherme da Cunha Barroso between 1917 and 1936. We defend the idea that Os Protocolos dos S?bios de Si?o [The Protocols of the Elders of Zion] constitute a new text, not simply a translation of French version. . In this sense, we are based on the texts of the New Political History, the history of the national space and the Political Religion, in order to understand how this signature builds on the thesis of the Jewish imperialism and the affirmation of Brazilian nationality, in view of the production of narrative discourse against the Jews. In this respect, we use as a methodological reference the books Narrative Discourse: An Essay in Method (1990) and Paratexts: Thresholds of interpretation (2001), by G?rard Genette, and dedicate a chapter of the dissertation for each work. In the first chapter, we characterize the narrative discourse of Ideias e Palavras, showing how the dubiousness of the signature "Jo?o do Norte (Gustavo Barroso)" makes explicit a positive appreciation of the Jews. In the second chapter, we characterized the narrative discourse of A Ronda dos S?culos, thinking about the autonomy of the signature and the process of negativation of the Jews. In the third chapter, we analyze the narrative discourse of Os Protocolos dos S?bios de Si?o and we discuss that signature "Gustavo Barroso" and Anti-semitism. We demonstrate the continuity of the international scale as spatial and temporal comprehension, the description of physical environments as a presupposition of the psychology of the characters, the insertion of birds as a mark of the cleavages in the narrative, the appearance of war as a historical constant, citation of Jews to discuss the Jews and the understanding of human nature as tending to destruction. Studying the writings of Gustavo Barroso is important insofar as he is considered the exponent of Brazilian anti-Semitism, it was he who theoretically concatenated the conflux between Catholicism and integralism, so that he became one of the authors most quoted by contemporary anti-Semites as a form legitimize persecution of minorities and authoritarian thinking.

Submitted by Ricardo Cedraz Duque Moliterno (ricardo.moliterno@uefs.br) on 2016-01-21T00:37:49Z No. of bitstreams: 1 TESE_Loise Araujo Costa.pdf: 3490024 bytes, checksum: d67e88fa9cf7de3c8ca53e0ee35cc012 (MD5) / Made available in DSpace on 2016-01-21T00:37:49Z (GMT). No. of bitstreams: 1 TESE_Loise Araujo Costa.pdf: 3490024 bytes, checksum: d67e88fa9cf7de3c8ca53e0ee35cc012 (MD5) Previous issue date: 2014-08-29 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / The Atlantic Forest has the highest biodiversity among tropical forests is one of the 34 priority areas for global conservation. Currently remains about 11% of its original area, which is composed of fragmented and geographically distant remnants. Among the microorganisms that compose forest ecosystems, fungi are important components because ensure the cycling of carbon and nutrients, however are poorly studied. The present study aimed to assess the diversity and distribution of fungi associated to leaf litter from three Atlantic Forest remnants in the semiarid region of Brazil: Brejo Paraibano-PB, Serra da Ibiapaba-CE and Serra da Jib?ia-BA; and the effects of methodological aspects on mycobiota. Two expeditions were conducted in each area, during the wet season and the other in the dry season, between June/2011 and January/2013. Twenty-three samples of leaf litter, five Clusia nemorosa G. Mey and eighteen Vismia guianensis (Aubl) Choisy, were collected and submitted to the technique of particle filtration. The total volume of 9.3 mL of particle suspension was plated on two different culture media: dichloran rose bengal chloramphenicol agar (DRBC) and malt yeast extract agar (MYE). The analysis of this material yielded 6.460 colonies identified 168 taxa for which data were divided into three chapters. The first chapter evaluates the effects of time (fresh material, 07, 14, 21 and 28 d) and storage temperature (room temperature and 4?C) of the leaves of C. nemorosa plus the use of two culture media on mycobiota. Analysis of covariance indicated that the richness and the number of isolates decreased with storage, however in relation to the culture medium there was no significant difference. The storage temperature had no significant influence on the community according to the t-test. The second chapter compared the communities of fungi of C. nemorosa and V. guianensis during the wet and dry seasons. Clusia nemorosa showed higher species richness and diversity of fungi compared to V. guianensis. Similarity analysis indicated that variations in the community between plants and seasons were significant while the cluster analysis and multivariate NMDS showed seasonality factor as more decisive for the distribution of fungi. The third chapter investigated the spatial and temporal distribution of fungi associated with leaf litter community of V. guianensis present in the three remaining. Multivariate analysis NMDS revealed differences in community composition of fungi in each area and climate season and the similarity analysis indicated that the differences were statistically significant. The results of this study presented a great diversity associated with the leaf litter present in remnants of Atlantic Forest and indicate that the distribution of fungi in the environment is not random. Knowledge of the effects of biotic and abiotic factors on the distribution of saprobic fungi is fundamental to understanding the role that they play in forest ecosystems. / A Mata Atl?ntica apresenta uma das maiores biodiversidade dentre as florestas tropicais sendo uma das 34 ?reas priorit?rias para a conserva??o mundial. Atualmente resta cerca de 11% da sua ?rea original, que ? composto por remanescentes fragmentados e distantes geograficamente. Dentre os micro-organismos que comp?em os ecossistemas florestais, os fungos s?o componentes importantes, pois promovem a ciclagem de carbono e nutrientes, no entanto, s?o pouco estudados. O presente estudo teve como objetivo avaliar a diversidade e distribui??o de fungos associados ao folhedo de tr?s remanescentes de Mata Atl?ntica na regi?o semi?rida do Brasil: Brejo Paraibano-PB, Serra da Ibiapaba-CE e Serra da Jib?ia-BA; bem como os efeitos de aspectos metodol?gicos sobre a micobiota. Duas expedi??es foram realizadas em cada ?rea, uma durante a esta??o chuvosa e a outra na esta??o seca, entre junho/2011 e janeiro/2013. Vinte e tr?s amostras de folhas da serapilheira, cinco de Clusia nemorosa G. Mey e dezoito de Vismia guianensis (Aubl) Choisy, foram coletadas e submetidas ? t?cnica de filtra??o de part?culas. O volume total de 9.3 mL de suspens?o de part?culas foi plaqueado em dois meios de cultivo: ?gar dicloran rosa bengala cloranfenicol (DRBC) e ?gar extrato de malte e levedura (MYE). A partir da an?lise desse material, 6.460 col?nias foram isoladas e identificadas em 168 t?xons cujos dados foram distribu?dos em tr?s cap?tulos. O primeiro cap?tulo avaliou os efeitos do tempo (material fresco, 07, 14, 21 e 28 dias) e temperatura (ambiente e 4?C) no acondicionamento das folhas de C. nemorosa al?m do uso dos dois meios de cultura sobre a micobiota. A an?lise de covari?ncia indicou que a riqueza e o n?mero de isolados diminu?ram com o tempo de acondicionamento, entretanto em rela??o ao meio de cultura n?o houve diferen?a significativa. A temperatura de acondicionamento n?o apresentou influ?ncia significativa sobre a comunidade, segundo o teste-t. O segundo cap?tulo comparou as comunidades de fungos de C. nemorosa e V. guianensis durante as esta??es chuvosa e seca. Clusia nemorosa apresentou maior riqueza de esp?cies e diversidade de fungos comparada a V. guianensis. A an?lise de similaridade indicou que as varia??es na comunidade entre as plantas e esta??es foram significativas, enquanto que a an?lise de agrupamento e a multivariada NMDS apresentaram a sazonalidade como fator determinante para a distribui??o dos fungos. O terceiro cap?tulo investigou a distribui??o espacial e temporal da comunidade de fungos associada ao folhedo de V. guianensis presentes nos tr?s remanescentes. A an?lise multivariada NMDS revelou diferen?as na composi??o das comunidades de fungos em cada ?rea e esta??o clim?tica e a an?lise de similaridade indicou que as diferen?as encontradas foram estatisticamente significativas. Os resultados deste estudo apresentam uma grande diversidade de fungos associada ao folhedo presente nos remanescentes de Mata Atl?ntica e indicam que a distribui??o dos fungos no ambiente n?o ? aleat?ria. O conhecimento dos efeitos dos fatores bi?ticos e abi?ticos sobre a distribui??o dos fungos sapr?bios ? fundamental para entender o papel que desempenham nos ecossistemas florestais.

Generic Ericsson Processor boards are general purpose hardware platforms which provide generic processing services. They support the Unified Extensible Firmware Interface Specification. They have several network interfaces available and they are connected to Ericsson’s laboratory network. Several servers are also connected to this network. These boards require periodic firmware upgrades. They also require acquiring new firmware components and data files. Currently, an application to download or upload files from and to Ericsson’s laboratory servers when an Operating System has not already been booted does not exist. Therefore, the files have to be transferred to USB drives which are connected later to the boards in order to transfer the files. This is a time consuming operation which decreases Ericsson’s productivity. In addition, although Generic Ericsson Processor boards have an optional solid-state drive as secondary storage, Ericsson wants to be able to operate without it. This is because this secondary storage is not always available and Ericsson does not want to use it when the Generic Ericsson Processor boards are operating before an Operating System has been loaded. They prefer to use Random Access Memory storage. This project is focused on studying possible solutions for those two problems. Several file transfer protocols are analyzed. Several file system solutions mounted on Random Access Memory are also explored. A Trivial File Transfer Protocol client application and a Random Access Memory Disk driver prototype are designed, implemented and tested. They are tailored to work on a pre-boot environment, when the boards have not booted an Operating System yet, in Ericsson’s laboratory network. Finally, a secure file transfer protocols’ study is developed. This study will be used to assess Ericsson on the optimal secure file transfer protocol choice in order to implement possible secure future versions of the system.

O presente trabalho descreve o desenvolvimento de um microcomputador de 8 bits. O projeto inclui além dos circuitos básicos, lógica adicional para extender a memória contornando o limite normal de endereçamento. Um disco virtual uma interface em RAM e uma interface para \"Winchester\" foram desenvolvidas para extender a capacidade de armazenamento secundário e a velocidade de execução. Suporte para o coprocessador AM9511 é fornecido para freqüentes cálculos em ponto flutuante. Rotinas para operações básicas de E/,. manipulação da memória e \"Caching\" de disco, foram desenvolvidas para suportar o sistema operacional CP/M. Um monitor residente com montador, desmontador e funções de E/S de alto nível, foi construído para ajudar no desenvolvimento de aplicações dedicadas. / The present works describes the development of an 8 bits microcomputer system. The project includes, besides the basic circuity, additional logic for memory extension behind the regular address limit. A virtual RAM disk and a Winchester interface were developed to extend secondary storage and execution speed. For floating point intensive calculations support for an AM9511 coprocessor is given. Routines for basic I/O operations, memory management and disk \"Caching\" were developed to support the CP/M operating system. A resident monitor with assembly, disassembly and high level I/O functions was constructed to aid the development of dedicated application.

O presente trabalho descreve o desenvolvimento de um microcomputador de 8 bits. O projeto inclui além dos circuitos básicos, lógica adicional para extender a memória contornando o limite normal de endereçamento. Um disco virtual uma interface em RAM e uma interface para \"Winchester\" foram desenvolvidas para extender a capacidade de armazenamento secundário e a velocidade de execução. Suporte para o coprocessador AM9511 é fornecido para freqüentes cálculos em ponto flutuante. Rotinas para operações básicas de E/,. manipulação da memória e \"Caching\" de disco, foram desenvolvidas para suportar o sistema operacional CP/M. Um monitor residente com montador, desmontador e funções de E/S de alto nível, foi construído para ajudar no desenvolvimento de aplicações dedicadas. / The present works describes the development of an 8 bits microcomputer system. The project includes, besides the basic circuity, additional logic for memory extension behind the regular address limit. A virtual RAM disk and a Winchester interface were developed to extend secondary storage and execution speed. For floating point intensive calculations support for an AM9511 coprocessor is given. Routines for basic I/O operations, memory management and disk \"Caching\" were developed to support the CP/M operating system. A resident monitor with assembly, disassembly and high level I/O functions was constructed to aid the development of dedicated application.