This work modifies Shamir’s algorithm by sharing a random key that is used to lock up the secret data; as against sharing the data itself. This is significant in cloud computing, especially with homomorphic encryption. Using web design, the resultant scheme practically globalises secret sharing with authentications and inherent secondary applications. The work aims at improving cybersecurity via a joint exploitation of human factors and technology; a human-centred cybersecurity design as opposed to technology-centred. The completed functional scheme is tagged CDRSAS. The literature on secret sharing schemes is reviewed together with the concepts of human factors, trust, cyberspace/cryptology and an analysis on a 3-factor security assessment process. This is followed by the relevance of passwords within the context of human factors. The main research design/implementation and system performance are analysed, together with a proposal for a new antidote against 419 fraudsters. Two twin equations were invented in the investigation process; a pair each for secret sharing and a risk-centred security assessment technique. The building blocks/software used for the CDRSAS include Shamir’s algorithm, MD5, HTML5, PHP, Java, Servlets, JSP, Javascript, MySQL, JQuery, CSS, MATLAB, MS Excel, MS Visio, and Photoshop. The codes are developed in Eclipse IDE, and the Java-based system runs on Tomcat and Apache, using XAMPP Server. Its code units have passed JUnit tests. The system compares favourably with SSSS. Defeating socio-cryptanalysis in cyberspace requires strategies that are centred on human trust, trust-related human attributes, and technology. The PhD research is completed but there is scope for future work.

Estudo qualitativo de natureza descritiva, objetivando analisar a autoria científica a partir do compartilhamento de dados de pesquisa. Para esta finalidade, foi utilizada a Teoria Ator-Rede (ANT), a qual busca, a partir de uma ideia de simetria entre humanos e não humanos, não assumir uma divisão entre essas entidades, possibilitando visualizar o estabelecimento e a dissolução de uma rede a partir das relações que se criam em diversos níveis. Esses atores-rede, actantes, estão mobilizados para a estruturação de redes temporárias a partir de um programa de ações, através da transformação e da modificação do significado ou dos elementos que veiculam. Os dados levantados, os quais serviram de base para descrição e análise a partir da literatura que também emergiu do que foi coletado, foram recolhidos a partir de observação, de entrevistas e de materiais bibliográficos. A investigação ocorreu junto ao Repositório de Dados de Estudos Ecológicos do Programa de Pesquisa em Biodiversidade (PPBio). Conclui que os objetos conceituais e pragmáticos não podem ser vistos de maneira isolada, mas sim como atores-rede afetados diretamente pela tecnologia, devendo ser considerados atuantes importantes no processo de produção, compartilhamento e uso de dados digitais de pesquisa. A construção de um fato científico e social como a autoria, é coordenada por uma série de elementos que foram levantados com o auxílio da ANT, como a coleta de dados, a curadoria, os próprios dados científicos, seus metadados, as fontes de fomento, a política de dados, o repositório e seus softwares de gerenciamento e envio de dados e metadados, o licenciamento, a propriedade e a responsabilidade, agindo como um tipo de instrumentalização de um arranjo de fenômenos, isto é, uma ferramenta que, atuante como conceito e/ou como processo, permite que seja consolidado um conjunto de ações instituídas a partir de regras explícitas e implícitas. / Qualitative study of descriptive nature, aimed to analyze the scientific authorship from the data sharing. For this purpose, we used the Actor-Network Theory (ANT), which seeks, from an idea of symmetry between human and non-human, do not assume a division between those entities, allowing to view the establishment and dissolution of a network from the relationships that are created at different levels. These actors-network, actants, are mobilized for structuring temporary networks from an action program, through the transformation and modification of the meaning or the elements they provide. The data collected, which were the basis for description and analysis from the literature that also emerged from what ware collected by observation, interviews and bibliographic materials. The study was carried out by the Repositório de Dados de Estudos Ecológicos do Programa de Pesquisa em Biodiversidade (PPBio). Concludes that conceptual and pragmatic objects can not be seen in isolate way, but as actors directly affected by the technology, should be considered important actants in the process of production, sharing and use of digital research data. The construction of a scientific and social fact as authorship, is coordinated by a number of elements that were raised with the help of ANT, such as data collection, curation, scientific data and its metadata, funding sources, data policy, repository and its management software for data and metadata, licensing, ownership and responsibility, acting as a kind of exploitation of a phenomena arrangement, ie, a tool that can be seen as concept and/or as a process, allows it to be consolidated a set of actions established from explicit and implicit rules.

Estudo qualitativo de natureza descritiva, objetivando analisar a autoria científica a partir do compartilhamento de dados de pesquisa. Para esta finalidade, foi utilizada a Teoria Ator-Rede (ANT), a qual busca, a partir de uma ideia de simetria entre humanos e não humanos, não assumir uma divisão entre essas entidades, possibilitando visualizar o estabelecimento e a dissolução de uma rede a partir das relações que se criam em diversos níveis. Esses atores-rede, actantes, estão mobilizados para a estruturação de redes temporárias a partir de um programa de ações, através da transformação e da modificação do significado ou dos elementos que veiculam. Os dados levantados, os quais serviram de base para descrição e análise a partir da literatura que também emergiu do que foi coletado, foram recolhidos a partir de observação, de entrevistas e de materiais bibliográficos. A investigação ocorreu junto ao Repositório de Dados de Estudos Ecológicos do Programa de Pesquisa em Biodiversidade (PPBio). Conclui que os objetos conceituais e pragmáticos não podem ser vistos de maneira isolada, mas sim como atores-rede afetados diretamente pela tecnologia, devendo ser considerados atuantes importantes no processo de produção, compartilhamento e uso de dados digitais de pesquisa. A construção de um fato científico e social como a autoria, é coordenada por uma série de elementos que foram levantados com o auxílio da ANT, como a coleta de dados, a curadoria, os próprios dados científicos, seus metadados, as fontes de fomento, a política de dados, o repositório e seus softwares de gerenciamento e envio de dados e metadados, o licenciamento, a propriedade e a responsabilidade, agindo como um tipo de instrumentalização de um arranjo de fenômenos, isto é, uma ferramenta que, atuante como conceito e/ou como processo, permite que seja consolidado um conjunto de ações instituídas a partir de regras explícitas e implícitas. / Qualitative study of descriptive nature, aimed to analyze the scientific authorship from the data sharing. For this purpose, we used the Actor-Network Theory (ANT), which seeks, from an idea of symmetry between human and non-human, do not assume a division between those entities, allowing to view the establishment and dissolution of a network from the relationships that are created at different levels. These actors-network, actants, are mobilized for structuring temporary networks from an action program, through the transformation and modification of the meaning or the elements they provide. The data collected, which were the basis for description and analysis from the literature that also emerged from what ware collected by observation, interviews and bibliographic materials. The study was carried out by the Repositório de Dados de Estudos Ecológicos do Programa de Pesquisa em Biodiversidade (PPBio). Concludes that conceptual and pragmatic objects can not be seen in isolate way, but as actors directly affected by the technology, should be considered important actants in the process of production, sharing and use of digital research data. The construction of a scientific and social fact as authorship, is coordinated by a number of elements that were raised with the help of ANT, such as data collection, curation, scientific data and its metadata, funding sources, data policy, repository and its management software for data and metadata, licensing, ownership and responsibility, acting as a kind of exploitation of a phenomena arrangement, ie, a tool that can be seen as concept and/or as a process, allows it to be consolidated a set of actions established from explicit and implicit rules.

Estudo qualitativo de natureza descritiva, objetivando analisar a autoria científica a partir do compartilhamento de dados de pesquisa. Para esta finalidade, foi utilizada a Teoria Ator-Rede (ANT), a qual busca, a partir de uma ideia de simetria entre humanos e não humanos, não assumir uma divisão entre essas entidades, possibilitando visualizar o estabelecimento e a dissolução de uma rede a partir das relações que se criam em diversos níveis. Esses atores-rede, actantes, estão mobilizados para a estruturação de redes temporárias a partir de um programa de ações, através da transformação e da modificação do significado ou dos elementos que veiculam. Os dados levantados, os quais serviram de base para descrição e análise a partir da literatura que também emergiu do que foi coletado, foram recolhidos a partir de observação, de entrevistas e de materiais bibliográficos. A investigação ocorreu junto ao Repositório de Dados de Estudos Ecológicos do Programa de Pesquisa em Biodiversidade (PPBio). Conclui que os objetos conceituais e pragmáticos não podem ser vistos de maneira isolada, mas sim como atores-rede afetados diretamente pela tecnologia, devendo ser considerados atuantes importantes no processo de produção, compartilhamento e uso de dados digitais de pesquisa. A construção de um fato científico e social como a autoria, é coordenada por uma série de elementos que foram levantados com o auxílio da ANT, como a coleta de dados, a curadoria, os próprios dados científicos, seus metadados, as fontes de fomento, a política de dados, o repositório e seus softwares de gerenciamento e envio de dados e metadados, o licenciamento, a propriedade e a responsabilidade, agindo como um tipo de instrumentalização de um arranjo de fenômenos, isto é, uma ferramenta que, atuante como conceito e/ou como processo, permite que seja consolidado um conjunto de ações instituídas a partir de regras explícitas e implícitas. / Qualitative study of descriptive nature, aimed to analyze the scientific authorship from the data sharing. For this purpose, we used the Actor-Network Theory (ANT), which seeks, from an idea of symmetry between human and non-human, do not assume a division between those entities, allowing to view the establishment and dissolution of a network from the relationships that are created at different levels. These actors-network, actants, are mobilized for structuring temporary networks from an action program, through the transformation and modification of the meaning or the elements they provide. The data collected, which were the basis for description and analysis from the literature that also emerged from what ware collected by observation, interviews and bibliographic materials. The study was carried out by the Repositório de Dados de Estudos Ecológicos do Programa de Pesquisa em Biodiversidade (PPBio). Concludes that conceptual and pragmatic objects can not be seen in isolate way, but as actors directly affected by the technology, should be considered important actants in the process of production, sharing and use of digital research data. The construction of a scientific and social fact as authorship, is coordinated by a number of elements that were raised with the help of ANT, such as data collection, curation, scientific data and its metadata, funding sources, data policy, repository and its management software for data and metadata, licensing, ownership and responsibility, acting as a kind of exploitation of a phenomena arrangement, ie, a tool that can be seen as concept and/or as a process, allows it to be consolidated a set of actions established from explicit and implicit rules.

There is a large number of biosignals that can be obtained from the human body. Repositories of biosignals are used for researchers in many studies as datasets. Datasets with clinical and personal information have many regulations and they are not accessible to everyone. Platforms with acquisition, recording and visualization of data are currently used in homecare systems for monitoring patients in an effcient way. Distant monitoring allows a good and prompt communication between patients and physicians. This work describes the design and development of a platform at hardware and software level for recording, storage, visualization and analysis of biosignals on the cloud. For the platform, IoT and Cloud Computing resources were used. Open-source and free software are considered for an easy and flexible enlargement of the system.

Data warehouse technology has been successfully integrated into the information infrastructure of major organizations as potential solution for eliminating redundancy and providing for comprehensive data integration. Realizing the importance of a data warehouse as the main data repository within an organization, this dissertation addresses different aspects related to the data warehouse architecture and performance issues. Many data warehouse architectures have been presented by industry analysts and research organizations. These architectures vary from the independent and physical business unit centric data marts to the centralised two-tier hub-and-spoke data warehouse. The operational data store is a third tier which was offered later to address the business requirements for inter-day data loading. While the industry-available architectures are all valid, I found them to be suboptimal in efficiency (cost) and effectiveness (productivity). In this dissertation, I am advocating a new architecture (The Hybrid Architecture) which encompasses the industry advocated architecture. The hybrid architecture demands the acquisition, loading and consolidation of enterprise atomic and detailed data into a single integrated enterprise data store (The Enterprise Data Warehouse) where businessunit centric Data Marts and Operational Data Stores (ODS) are built in the same instance of the Enterprise Data Warehouse. For the purpose of highlighting the role of data warehouses for different applications, we describe an effort to develop a data warehouse for a geographical information system (GIS). We further study the importance of data practices, quality and governance for financial institutions by commenting on the RBC Financial Group case. v The development and deployment of the Enterprise Data Warehouse based on the Hybrid Architecture spawned its own issues and challenges. Organic data growth and business requirements to load additional new data significantly will increase the amount of stored data. Consequently, the number of users will increase significantly. Enterprise data warehouse obesity, performance degradation and navigation difficulties are chief amongst the issues and challenges. Association rules mining and social networks have been adopted in this thesis to address the above mentioned issues and challenges. We describe an approach that uses frequent pattern mining and social network techniques to discover different communities within the data warehouse. These communities include sets of tables frequently accessed together, sets of tables retrieved together most of the time and sets of attributes that mostly appear together in the queries. We concentrate on tables in the discussion; however, the model is general enough to discover other communities. We first build a frequent pattern mining model by considering each query as a transaction and the tables as items. Then, we mine closed frequent itemsets of tables; these itemsets include tables that are mostly accessed together and hence should be treated as one unit in storage and retrieval for better overall performance. We utilize social network construction and analysis to find maximum-sized sets of related tables; this is a more robust approach as opposed to a union of overlapping itemsets. We derive the Jaccard distance between the closed itemsets and construct the social network of tables by adding links that represent distance above a given threshold. The constructed network is analyzed to discover communities of tables that are mostly accessed together. The reported test results are promising and demonstrate the applicability and effectiveness of the developed approach.

Submitted by Elizabete Cristina de Souza de Aguiar Monteiro null (beteaguia@yahoo.com.br) on 2017-03-16T13:34:19Z No. of bitstreams: 1 dissertação final repositorio.pdf: 2620985 bytes, checksum: 7f381cc199ed6199b0c4323398fde01a (MD5) / Approved for entry into archive by LUIZA DE MENEZES ROMANETTO (luizamenezes@reitoria.unesp.br) on 2017-03-16T13:44:52Z (GMT) No. of bitstreams: 1 monteiro_ecsa_me_mar.pdf: 2620985 bytes, checksum: 7f381cc199ed6199b0c4323398fde01a (MD5) / Made available in DSpace on 2017-03-16T13:44:52Z (GMT). No. of bitstreams: 1 monteiro_ecsa_me_mar.pdf: 2620985 bytes, checksum: 7f381cc199ed6199b0c4323398fde01a (MD5) Previous issue date: 2017-02-20 / A enchente de dados científicos nos últimos anos apresenta desafios e novas oportunidades. Os desafios incluem a otimização no uso e reuso de dados e as oportunidades, no desenvolvimento de infraestrutura com implementação de repositórios de dados e todas as atividades inerentes a eles como gerenciamento, descrição, disseminação, integração, direitos autorais, privacidade, quando devida, qualidade e preservação de conjunto de dados. O Plano de Gerenciamento de Dados é um documento composto por diretrizes que orientam os pesquisadores na articulação para liberarem seus conjuntos de dados que ficarão depositados nos repositórios. As diretrizes descritas no Plano de Gerenciamento de Dados precisam ser explícitas em relação às questões sobre direito autoral. O licenciamento de dados estabelece claramente os termos de uso evitando problemas jurídico futuros. As licenças Creative Commons e as Open Data Commons são usadas para licenciar dados e justificam o objetivo dessa pesquisa que consistem em investigar como os repositórios de dados das cem melhores universidades do mundo explicitam em seus Planos de Gerenciamento de Dados as recomendações relacionadas aos direitos autorais dos dados. A metodologia utilizada foi baseada na pesquisa quantitativa e qualitativa, incluindo estudo exploratório-descritivo. A coleta de dados foi realizada nos Planos de Gerenciamento de Dados dos repositórios implementados nas 100 melhores universidades do mundo. Os resultados demostram que a maioria das universidades analisadas implementaram repositório de dados, porém não são todos os repositórios que dispõe de PGDs e de orientações relacionadas aos direitos autorais. / The flood of scientific data in recent years presents challenges and new opportunities. Challenges include optimizing the use and reuse of data and opportunities, developing infrastructure with implementation of data repositories and all activities inherent to them such as management, description, dissemination, integration, copyright, privacy, where appropriate, quality and preservation of data set. The Data Management Plan is a document composed of guidelines that guide the researchers in the articulation to release their datasets that will be deposited in the repositories. The guidelines outlined in the Data Management Plan need to be explicit in relation to copyright issues. The licensing of data clearly establishes the terms of use avoiding future legal problems. Creative Commons and Open Data Commons licenses are used to license data and justify the aims of this research which consists of investigating how the data repositories of the world's top 100 universities spell out in their Data Management Plans the recommendations related to copyright of data. The methodology used was based on quantitative and qualitative research, including an exploratory-descriptive study. The data collection was done in the Data Management Plans of the repositories implemented in the 100 best universities in the world. The results show that most of the universities analyzed have implemented a data repository, but not all repositories have PGDs and copyright guidelines.

Mit dem Ziel, das Publizieren von Artikeln, Forschungsdaten und wissenschaftlicher Software gemäß den FAIR-Prinzipien zu unterstützen, wurde am HZDR ein integriertes Publikationsmanagement aufgebaut. Insbesondere Daten- und Softwarepublikationen erfordern die Entwicklung bedarfsgerechter organisatorischer und technischer Strukturen ergänzend zu bereits sehr gut funktionierenden Services im Publikationsmanagement. In der Zusammenarbeit mit Wissenschaftlern des HZDR und internationalen Partnern in ausgewählten Projekten wurde der Bedarf an Unterstützung im Forschungsdatenmanagement analysiert. Darauf aufbauend wurde schrittweise ein integriertes System von Infrastrukturen und Services entwickelt und bereitgestellt. In einer seit Mai 2018 gültigen Data Policy wurden die Rahmenbedingungen und Regelungen sowohl für wissenschaftliche Mitarbeiter als auch für externe Messgäste definiert. Im Vortrag wird auf die Erfahrungen im integrierten Publikationsmanagement für Artikel, Forschungsdaten und Forschungssoftware eingegangen und daraus resultierend werden die nächsten Aufgaben und Ziele entwickelt.

No / The Versatile and Ubiquitous Secret Sharing System, a cloud data repository secure access and a web based authentication scheme. It is designed to implement the sharing, distribution and reconstruction of sensitive secret data that could compromise the functioning of an organisation, if leaked to unauthorised persons. This is carried out in a secure web environment, globally. It is a threshold secret sharing scheme, designed to extend the human trust security perimeter. The system could be adapted to serve as a cloud data repository and secure data communication scheme. A secret sharing scheme is a method by which a dealer distributes shares of a secret data to trustees, such that only authorised subsets of the trustees can reconstruct the secret. This paper gives a brief summary of the layout and functions of a 15-page secure server-based website prototype; the main focus of a PhD research effort titled ‘Cryptography and Computer Communications Security: Extending the Human Security Perimeter through a Web of Trust’. The prototype, which has been successfully tested, has globalised the distribution and reconstruction processes. / Petroleum Technology Development Fund

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