Indiana University-Purdue University Indianapolis (IUPUI) / Non-invasive surface recording of bioelectric potentials continues to be an essential tool in a variety of research and medical diagnostic procedures. However, the integrity of these recordings, and hence the reliability of subsequent analysis, diagnosis, or recommendations based on the recordings, can be significantly compromised when various types of noise are allowed to penetrate the recording circuit and contaminate the signals. In particular, for bioelectric phenomena in which the amplitude of the biosignal is relatively low, such as muscle activity (typically on the order of millivolts) or neural traffic (microvolts), external noise may substantially contaminate or even completely overwhelm the signal. In such circumstances, the tissue-electrode interface is typically the primary point of signal contamination since its impedance is relatively high compared to the rest of the recording circuit. Therefore, in the recording of low-amplitude biological signals, it is of paramount importance to minimize the impedance of the tissue-electrode interface in order to consistently obtain low-noise recordings. The aims of the current work were (1) to complete the development of a set of tools for rapid, simple, and reliable full-spectrum characterization and analytical modeling of the complex impedance of the tissue-electrode interface, and (2) to characterize the interfacial impedance and signal-to-noise ratio (SNR) at the surface of the skin across a variety of preparation methods and determine a factor or set of factors that contribute most effectively to the reduction of tissue-electrode impedance and noise contamination during recording. Specifically, we desired to test an initial hypothesis that surface abrasion is the principal determining factor in skin preparation to achieve consistently low-impedance, low-noise recordings. During the course of this master’s study, (1) a system with portable, battery-powered hardware and robust acquisition/analysis software for broadband impedance characterization has been achieved, and (2) the effects of skin preparation methods on the impedance of the tissue-electrode interface and the SNR of surface electromyographic recordings have been systematically quantified and compared in human subjects. We found our hypothesis to be strongly supported by the results: the degree of surface abrasion was the only factor that could be correlated to significant differences in either the interfacial impedance or the SNR. Given these findings, we believe that abrasion holds the key to consistently obtaining a low-impedance contact interface and high-quality recordings and should thus be considered an essential component of proper skin preparation prior to attachment of electrodes for recording of small bioelectric surface potentials.

Pour fournir une disponibilité permanente des données et réduire la latence réseau, les systèmes de partage de données se basent sur la réplication optimiste. Dans ce paradigme, il existe plusieurs copies de l'objet partagé dite répliques stockées sur des sites. Ces répliques peuvent être modifiées librement et à tout moment. Les modifications sont exécutées en local puis propagées aux autres sites pour y être appliquées. Les algorithmes de réplication optimiste sont chargés de gérer les modifications parallèles. L'objectif de cette thèse est de proposer une méthodologie d'évaluation pour les algorithmes de réplication optimiste. Le contexte de notre étude est l'édition collaborative. Nous allons concevoir pour cela un outil d'évaluation qui intègre un mécanisme de génération de corpus et un simulateur d'édition collaborative. À travers cet outil, nous allons dérouler plusieurs expériences sur deux types de corpus: synchrone et asynchrone. Dans le cas d'une édition collaborative synchrone, nous évaluerons les performances des différents algorithmes de réplication sur différents critères tels que le temps d'exécution, l'occupation mémoire, la taille des messages, etc. Nous proposerons ensuite quelques améliorations. En plus, dans le cas d'une édition collaborative asynchrone, lorsque deux répliques se synchronisent, les conflits sont plus nombreux à apparaître. Le système peut bloquer la fusion des modifications jusqu'à ce que l'utilisateur résolut les conflits. Pour réduire le nombre de ces conflits et l'effort des utilisateurs, nous proposerons une métrique d'évaluation et nous évaluerons les différents algorithmes sur cette métrique. Nous analyserons le résultat pour comprendre le comportement des utilisateurs et nous proposerons ensuite des algorithmes pour résoudre les conflits les plus important et réduire ainsi l'effort des développeurs. Enfin, nous proposerons une nouvelle architecture hybride basée sur deux types d'algorithmes de réplication. Contrairement aux architectures actuelles, l'architecture proposéeest simple, limite les ressources sur les dispositifs clients et ne nécessite pas de consensus entre les centres de données / To provide a high availability from any where, at any time, with low latency, data is optimistically replicated. This model allows any replica to apply updates locally, while the operations are later sent to all the others. In this way, all replicas eventually apply all updates, possibly even in different order. Optimistic replication algorithms are responsible for managing the concurrent modifications and ensure the consistency of the shared object. In this thesis, we present an evaluation methodology for optimistic replication algorithms. The context of our study is collaborative editing. We designed a tool that implements our methodology. This tool integrates a mechanism to generate a corpus and a simulator to simulate sessions of collaborative editing. Through this tool, we made several experiments on two different corpus: synchronous and asynchronous. In synchronous collaboration, we evaluate the performance of optimistic replication algorithms following several criteria such as execution time, memory occupation, message's size, etc. After analysis, some improvements were proposed. In addition, in asynchronous collaboration, when replicas synchronize their modifications, more conflicts can appear in the document. In this case, the system cannot merge the modifications until a user resolves them. In order to reduce the conflicts and the user's effort, we propose an evaluation metric and we evaluate the different algorithms on this metric. Afterward, we analyze the quality of the merge to understand the behavior of the users and the collaboration cases that create conflicts. Then, we propose algorithms for resolving the most important conflicts, therefore reducing the user's effort. Finally, we propose a new architecture for supporting cloud-based collaborative editing system. This architecture is based on two optimistic replication algorithms. Unlike current architectures, the proposed one removes the problems of the centralization and consensus between data centers, is simple and accessible for any developers

Submitted by JOSIANE SANTOS DE OLIVEIRA (josianeso) on 2018-04-03T15:11:00Z No. of bitstreams: 1 Marcos Antonio Oliveira da Cruz_.pdf: 640790 bytes, checksum: 623f1ee13db13c32e2c666c7a4983799 (MD5) / Made available in DSpace on 2018-04-03T15:11:00Z (GMT). No. of bitstreams: 1 Marcos Antonio Oliveira da Cruz_.pdf: 640790 bytes, checksum: 623f1ee13db13c32e2c666c7a4983799 (MD5) Previous issue date: 2017-08-23 / Nenhuma / O objetivo geral desse estudo foi descrever características da disciplina de perícia ministrada em cursos de Ciências Contábeis de Instituições de Ensino Superior da Região Norte do Brasil.A população do estudo é formada por 99 (noventa e nove) cursos e a amostra é composta por 45 (quarenta e cinco) cursos. Trata-se de uma pesquisa aplicada quanto à sua natureza, com abordagem predominantemente qualitativa, descritiva quanto ao seu objetivo e documental no que tange ao procedimento técnico. Foram examinadas características como: denominações da disciplina; conteúdos programáticos; metodologias de ensino (estratégias didáticas); metodologias de avaliação do aprendizado; carga horária e semestre de oferta da disciplina. Constatou-se que a disciplina de perícia é ministrada em todos os cursos das IES da amostra, predominando conteúdos relacionados com perícia contábil e arbitragem; há uma prevalência do uso de aulas expositivas, trabalhos em grupo e/ou individual e seminários como estratégias didáticas; o mesmo ocorrendo com o uso de provas descritivas e/ou objetivas, assiduidade e trabalhos individuais e/ou em grupos para a avaliação da aprendizagem dos alunos; a carga horária destinada para o ensino da disciplina varia entre 51 e 80 h-a; e em geral é ministrada no 7º ou 8º semestre, ou seja, entre o penúltimo e último semestres do curso. / The general objective of this study was to describe the characteristics of Forensic Accounting discipline taught in a sample of 45 (forty five) HEI Accounting Courses in the North Region in Brazil. It is an applied research in nature, mainly qualitative approached research, descriptive in its objective and documental concerning the technical procedure. Some characteristics were examined, as follows: discipline denominations, programs contents, teaching methodologies (didactic strategies), learning evaluation methodologies, academic load and discipline’s offering semester. It was known that the Forensic Accounting discipline is taught in all the HEI’s courses in the sample, being predominant contents covering forensic accounting and arbitration; there is a prevalence in the use of expositive classes, group and/or individual works and seminars as didactic strategies, occurring the same with descriptive and/or objective evaluations, attendance and group and/or individual work to the students’ learning evaluation; the academic load dedicated to the discipline’s teaching varies from 51 to 80 hours of class and it is generally taught in the seventh or eighth semesters, i.e., between the course’s second-to-last and the last semester.

La sécurité des réseaux sans fil fait l’objet d’une attention considérable ces dernières années. Toutefois, les communications sans fil sont confrontées à plusieurs types de menaces et d’attaques. Par conséquent, d’importants efforts, visant à sécuriser davantage les réseaux sans fil, ont dû être fournis pour en vue de lutter contre les attaques sans fil. Seulement, croire qu’une prévention intégrale des attaques peut s’effectuer au niveau de la première ligne de défense d’un système (pare-feux, chiffrement, …) n’est malheureusement qu’illusion. Ainsi, l’accent est de plus en plus porté sur la détection des attaques sans fil au travers d’une seconde ligne de défense, matérialisée par les systèmes de détection d’intrusions sans fil (WIDS). Les WIDS inspectent le trafic sans fil, respectant la norme 802.11, ainsi que les activités du système dans le but de détecter des activités malicieuses. Une alerte est ensuite envoyée aux briques chargées de la prévention pour contrer l’attaque. Sélectionner un WIDS fiable dépend principalement de l’évaluation méticuleuse de ses performances. L’efficacité du WIDS est considérée comme le facteur fondamental lors de l’évaluation de ses performances, nous lui accordons donc un grand intérêt dans ces travaux de thèse. La majeure partie des études expérimentales visant l’évaluation des systèmes de détection d’intrusions (IDS) s’intéressait aux IDS filaires, reflétant ainsi une carence claire en matière d’évaluation des IDS sans fil (WIDS). Au cours de cette thèse, nous avons mis l’accent sur trois principales critiques visant la plupart des précédentes évaluations : le manque de méthodologie d’évaluation globale, de classification d’attaque et de métriques d’évaluation fiables. Au cours de cette thèse, nous sommes parvenus à développer une méthodologie complète d’évaluation couvrant toutes les dimensions nécessaires pour une évaluation crédible des performances des WIDSs. Les axes principaux de notre méthodologie sont la caractérisation et la génération des données d’évaluation, la définition de métriques d’évaluation fiables tout en évitant les limitations de l’évaluation. Fondamentalement, les données d’évaluation sont constituées de deux principales composantes à savoir: un trafic normal et un trafic malveillant. Le trafic normal que nous avons généré au cours de nos tests d’évaluation était un trafic réel que nous contrôlions. La deuxième composante des données, qui se trouve être la plus importante, est le trafic malveillant consistant en des activités intrusives. Une évaluation complète et crédible des WIDSs impose la prise en compte de tous les scénarios et types d’attaques éventuels. Cela étant impossible à réaliser, il est nécessaire de sélectionner certains cas d’attaque représentatifs, principalement extraits d’une classification complète des attaques sans fil. Pour relever ce défi, nous avons développé une taxinomie globale des attaques visant la sécurité des réseaux sans fil, d’un point de vue de l’évaluateur des WIDS. Le deuxième axe de notre méthodologie est la définition de métriques fiables d’évaluation. Nous avons introduit une nouvelle métrique d’évaluation, EID (Efficacité de la détection d’intrusion), visant à pallier les limitations des précédentes métriques proposées. Nous avons démontré l’utilité de la métrique EID par rapport aux autres métriques proposées précédemment et comment elle parvenait à mesurer l’efficacité réelle tandis que les précédentes métriques ne mesuraient qu’une efficacité relative. L’EID peut tout aussi bien être utilisé pour l’évaluation de l’efficacité des IDS filaires et sans fil. Nous avons aussi introduit une autre métrique notée RR (Taux de Reconnaissance), pour mesurer l’attribut de reconnaissance d’attaque. Un important problème se pose lorsque des tests d’évaluation des WIDS sont menés, il s’agit des données de trafics incontrôlés sur le support ouvert de transmission. Ce trafic incontrôlé affecte sérieusement la pertinence des mesures… / Wireless intrusion detection system (WIDS) has become a matter of increasing concern in recent years as a crucial element in wireless network security. WIDS monitors 802.11 traffic to identify the intrusive activities, and then alerts the complementary prevention part to combat the attacks. Selecting a reliable WIDS system necessitates inevitably taking into account a credible evaluation of WIDSs performance. WIDS effectiveness is considered the basic factor in evaluating the WIDS performance, thus it receives great attention in this thesis. Most previous experimental evaluations of intrusion detection systems (IDSs) were concerned with the wired IDSs, with an apparent lack of evaluating the wireless IDSs (WIDSs). In this thesis, we try to manipulate three main critiques of most pervious evaluations; lack of comprehensive evaluation methodology, holistic attack classification, and expressive evaluation metrics. In this thesis, we introduce a comprehensive evaluation methodology that covers all the essential dimensions for a credible evaluation of WIDSs performance. The main pivotal dimensions in our methodology are characterizing and generating the evaluation dataset, defining reliable and expressive evaluation metrics, and overcoming the evaluation limitations. Basically, evaluation dataset consists of two main parts; normal traffic (as a background) and malicious traffic. The background traffic, which comprises normal and benign activities in the absence of attacks, was generated in our experimental evaluation tests as real controlled traffic. The second and important part of the dataset is the malicious traffic which is composed of intrusive activities. Comprehensive and credible evaluation of WIDSs necessitates taking into account all possible attacks. While this is operationally impossible, it is necessary to select representative attack test cases that are extracted mainly from a comprehensive classification of wireless attacks. Dealing with this challenge, we have developed a holistic taxonomy of wireless security attacks from the perspective of the WIDS evaluator. The second pivotal dimension in our methodology is defining reliable evaluation metrics. We introduce a new evaluation metric EID (intrusion detection effectiveness) that manipulates the drawbacks of the previously proposed metrics, especially the common drawback of their main notion that leads to measuring a relative effectiveness. The notion of our developed metric EID helps in measuring the actual effectiveness. We also introduce another metric RR (attack recognition rate) to evaluate the ability of WIDS to recognize the attack type. The third important dimension in our methodology is overcoming the evaluation limitations. The great challenge that we have faced in the experimental evaluation of WIDSs is the uncontrolled traffic over the open wireless medium. This uncontrolled traffic affects the accuracy of the measurements. We overcame this problem by constructing an RF shielded testbed to take all the measurements under our control without any interfering from any adjacent stations. Finally, we followed our methodology and conducted experimental evaluation tests of two popular WIDSs (Kismet and AirSnare), and demonstrated the utility of our proposed solutions.

Esta tese apresenta um conjunto de iniciativas que foram desenvolvidas na área de gestão educacional de uma escola de ensino técnico-profissionalizante que tem como mantenedora uma indústria de conformação de placas cerâmicas. Estas iniciativas foram baseadas no desenvolvimento e aplicação de um modelo educacional que tem como diferencial uma nova metodologia de avaliação fundamentada nos conceitos de valores (competências e habilidades pessoais, relacionais, produtivas e cognitivas). Para tanto, a pesquisa explorou a educação nos níveis médio-técnico/profissional, a qualidade da gestão educacional e industrial e o perfil dos alunos egressos formados com este novo tipo de gestão. A validação deste modelo educacional ocorreu a partir de uma análise ambiental nas instituições envolvidas, baseada em uma etapa de coleta de dados perceptivos e uma segunda etapa de coleta de dados evidentes. Através desta análise, observou-se um grande salto qualitativo dos envolvidos, pois este modelo apresentou uma melhora no desenvolvimento sócio-educativo da comunidade escolar e, sobretudo da relação do aluno com a escola e principalmente com a indústria. Verificou-se ainda que o diferencial deste novo modelo de gestão educacional foi o de preparar o aluno ainda no ambiente escolar para os desafios que o esperam no setor industrial, pois este tipo de gestão tem como principal propósito a formação de pessoas de excelência. / This thesis presents a set of initiatives that were developed in the area of educational management at a technical-vocational school, which is sponsored by a ceramic tile-shaping industry. These initiatives were based on the development and implementation of an educational model whose evaluation methodology based on the concepts of values (personal, relational, cognitive, and productive competencies and skills) differs from other schools. Thus, the research explores education at technical-vocational high school levels, the quality of industrial and educational management, and the profile of students who graduated with this new type of management. The validation of this educational model occurred from an environmental analysis in the institutions involved, based on a stage of perceptual data collecting and a second stage of visible data collection. Through this analysis, a qualitative increase of the people involved was observed, because this model showed an improvement in the socio-educational school community and especially, in the relationship not only between students and the school but mainly between students and the industry. It was also found that the differential of this new model of education management was to prepare the student, while still at school, for the challenges that they will face in the industrial sector, because this type of management has as main purpose the training of excellence in people.

Fundação Araucária / A segurança é definida por alguns autores como sinônimo de certeza e ausência de riscos e ameaças; segurança é, portanto, uma representação do mundo, um ideal imaginário. Para compreender como se dão as relações entre o espaço construído público e privado e as representações de segurança, apresenta-se, neste trabalho, um conjunto de estudos que se apoiaram na literatura dos campos disciplinares da arquitetura e urbanismo e nos campos interdisciplinares da segurança e tecnologia. O condomínio fechado, artefato e produto da urbanização permeada de conceitos e preconceitos sobre segurança tornou-­‐se objeto central. O trabalho com reportagens de jornais permitiu ouvir narrativas de moradores e da imprensa sobre condomínios fechados e investigar como estas lógicas dialogam com as representações de segurança e os artefatos tecnológicos no espaço urbano. O capítulo sobre as representações de segurança contidas nos sites internet das incorporadoras anunciando condomínios fechados permitiu estudar discursos e mitos embutidos no processo de venda que influenciam na decisão das pessoas por esse tipo de moradia. As praças vizinhas a condomínios verticais foram avaliadas para buscar relações entre as características arquitetônicas do espaço livre e a efetiva ocorrência de delitos; para isso realizou-­‐se uma análise de regressão seguida por estudo de correlações. Também foram ouvidos os depoimentos dos usuários das praças e suas ideias sobre segurança. Os estudos sugeriram que as teorias que buscam relacionar o ambiente com a ocorrência de delitos são importantes ferramentas de trabalho para projetistas de edificações, mas não parecem ser aplicáveis à escala do espaço público. As conclusões mostraram que as lógicas de ocupação do solo para os espaços abertos e fechados exibem diferentes representações de segurança. / Security is defined by some authors both as a synonym of certainty and as absence of risk and threats; security is, therefore, a representation of the world, an imaginary ideal. In order to understand the nature of the relations between public and private built environment and the representations of security, this essay presents a group of studies based on the literature from the disciplinary fields of architecture and urban planning and from interdisciplinary fields of security and technology. The gated community, an artifact and produce of urban design built upon concepts and prejudices about security has become the main object of inquiry. The first study, based on newspaper reports and news, made it possible to listen to the narratives of dwellers and of the press about gated communities and investigate how these logics interact with the representations of security and the technological artifacts in urban space. The chapter on representations of security in realtor internet advertisement pages for gated communities has allowed the study of the discourse and myths embedded within the sales pitch which influence prospective buyers. Public squares neighboring residential buildings were evaluated in a search for relationships between architectural characteristics of these public spaces and the actual occurrences of crimes; this has been achieved by means of regression and correlation studies. Users of these public squares were interviewed in regard to their ideas about security. The studies suggest that the theories about the relationship between the environment and the occurrence of crime are important tools for the planning of buildings, but they don't seem applicable at the scale of public urban spaces. The conclusions show that the logic of land use for public and private spaces shows different representations of security.

Esta tese apresenta um conjunto de iniciativas que foram desenvolvidas na área de gestão educacional de uma escola de ensino técnico-profissionalizante que tem como mantenedora uma indústria de conformação de placas cerâmicas. Estas iniciativas foram baseadas no desenvolvimento e aplicação de um modelo educacional que tem como diferencial uma nova metodologia de avaliação fundamentada nos conceitos de valores (competências e habilidades pessoais, relacionais, produtivas e cognitivas). Para tanto, a pesquisa explorou a educação nos níveis médio-técnico/profissional, a qualidade da gestão educacional e industrial e o perfil dos alunos egressos formados com este novo tipo de gestão. A validação deste modelo educacional ocorreu a partir de uma análise ambiental nas instituições envolvidas, baseada em uma etapa de coleta de dados perceptivos e uma segunda etapa de coleta de dados evidentes. Através desta análise, observou-se um grande salto qualitativo dos envolvidos, pois este modelo apresentou uma melhora no desenvolvimento sócio-educativo da comunidade escolar e, sobretudo da relação do aluno com a escola e principalmente com a indústria. Verificou-se ainda que o diferencial deste novo modelo de gestão educacional foi o de preparar o aluno ainda no ambiente escolar para os desafios que o esperam no setor industrial, pois este tipo de gestão tem como principal propósito a formação de pessoas de excelência. / This thesis presents a set of initiatives that were developed in the area of educational management at a technical-vocational school, which is sponsored by a ceramic tile-shaping industry. These initiatives were based on the development and implementation of an educational model whose evaluation methodology based on the concepts of values (personal, relational, cognitive, and productive competencies and skills) differs from other schools. Thus, the research explores education at technical-vocational high school levels, the quality of industrial and educational management, and the profile of students who graduated with this new type of management. The validation of this educational model occurred from an environmental analysis in the institutions involved, based on a stage of perceptual data collecting and a second stage of visible data collection. Through this analysis, a qualitative increase of the people involved was observed, because this model showed an improvement in the socio-educational school community and especially, in the relationship not only between students and the school but mainly between students and the industry. It was also found that the differential of this new model of education management was to prepare the student, while still at school, for the challenges that they will face in the industrial sector, because this type of management has as main purpose the training of excellence in people.

The findings in this case study are mainly based on material collected during a field trip with a fellow student to Laos in February-March 2005, which was sponsored by Sida through a Minor Field Study scholarship. The original interest was to study a political aid project (Governance and Administrative Reform Project Luang Prabang, GPAR LP) in a country like Laos with very complex preconditions such as one-party polity. In Laos my interest in evaluation of political aid grew mainly because I found out that the two donors in the project, Sida and the UNDP, had reached different conclusions in their respective evaluations of the project. The main interest in this thesis has been to study how donors have evaluated a political aid project. The study shows that Sida and UNDP used, what in the literature usually is referred to as, Conventional evaluation as methodology when they conducted their evaluations of GPAR LP. The study also shows that the main reason for the different points of view that are expressed in the evaluations depend on a lack of dialogue and consensus, regarding for the project crucial concepts, rather than choice of evaluation methodology. This lack of mutual understanding between the agencies also has implications for the possibilities of the receiving part to create a better understanding and ownership of the project. If Sida and UNDP had chosen to do a mutual evaluation a lot could have been won in the form of time, money and less irritation between the involved parties. The study finally shows that a different choice of evaluation methodology, in this case Participatory evaluation, could have had some positive effects mostly due to its supposedly democratic methods which are in line with the goals of the GPAR LP- project. One example here is the use of studies of the political context which would have been useful in this case. Another example is that the methodology could be useful to create a better understanding and ownership of the project through its participatory methods.

Esta tese apresenta um conjunto de iniciativas que foram desenvolvidas na área de gestão educacional de uma escola de ensino técnico-profissionalizante que tem como mantenedora uma indústria de conformação de placas cerâmicas. Estas iniciativas foram baseadas no desenvolvimento e aplicação de um modelo educacional que tem como diferencial uma nova metodologia de avaliação fundamentada nos conceitos de valores (competências e habilidades pessoais, relacionais, produtivas e cognitivas). Para tanto, a pesquisa explorou a educação nos níveis médio-técnico/profissional, a qualidade da gestão educacional e industrial e o perfil dos alunos egressos formados com este novo tipo de gestão. A validação deste modelo educacional ocorreu a partir de uma análise ambiental nas instituições envolvidas, baseada em uma etapa de coleta de dados perceptivos e uma segunda etapa de coleta de dados evidentes. Através desta análise, observou-se um grande salto qualitativo dos envolvidos, pois este modelo apresentou uma melhora no desenvolvimento sócio-educativo da comunidade escolar e, sobretudo da relação do aluno com a escola e principalmente com a indústria. Verificou-se ainda que o diferencial deste novo modelo de gestão educacional foi o de preparar o aluno ainda no ambiente escolar para os desafios que o esperam no setor industrial, pois este tipo de gestão tem como principal propósito a formação de pessoas de excelência. / This thesis presents a set of initiatives that were developed in the area of educational management at a technical-vocational school, which is sponsored by a ceramic tile-shaping industry. These initiatives were based on the development and implementation of an educational model whose evaluation methodology based on the concepts of values (personal, relational, cognitive, and productive competencies and skills) differs from other schools. Thus, the research explores education at technical-vocational high school levels, the quality of industrial and educational management, and the profile of students who graduated with this new type of management. The validation of this educational model occurred from an environmental analysis in the institutions involved, based on a stage of perceptual data collecting and a second stage of visible data collection. Through this analysis, a qualitative increase of the people involved was observed, because this model showed an improvement in the socio-educational school community and especially, in the relationship not only between students and the school but mainly between students and the industry. It was also found that the differential of this new model of education management was to prepare the student, while still at school, for the challenges that they will face in the industrial sector, because this type of management has as main purpose the training of excellence in people.

This diploma thesis deals with the assessment of the company information system and the proposal of changes. The thesis is divided into three parts. The first, theoretical part, is focused on the explanation of the basic terms used in the thesis. The second, analytical part contains the introduction of the company, its analysis and also the analysis of the information system. Based on this information, the last, design part is compiled, the content of which is to increase the security of the information system of Tereos TTD, a.s. company.