Há um consenso na literatura de que a aderência a um modelo de referência torna a gestão do processo de desenvolvimento de produtos (PDP) mais eficiente, pois estes auxiliam na sua representação, compreensão, elaboração, gestão e melhoria. Apesar de existirem diversos métodos de modelagem de PDP disponíveis, estes métodos são ainda pouco utilizados pela comunidade prática. Uma das possíveis causas deste problema é a dificuldade que as vistas elaboradas por estes métodos de modelagem oferecem para a visualização e compreensão do processo. Não há ainda estudos sobre a modelagem de PDP que considerem a perspectiva do usuário de forma satisfatória. Esta pesquisa tem por objetivo propor novas vistas para modelos de referencia de PDP que sejam mais eficazes, eficientes e satisfatórias no atendimento aos propósitos dos usuários de modelos de referência de PDP, em comparação com as vistas existentes. Para isso foram desenvolvidos dois protótipos de modelos de referência de PDP, um com novas vistas propostas, de caráter analógico, e um com vistas existentes, baseadas em fluxo de atividades com ligações lógicas. Esses protótipos foram submetidos a testes de usabilidade. Os resultados mostram que as vistas propostas foram mais eficazes, eficientes e satisfatórias para a maioria dos propósitos analisados. Conclui-se que vistas analógicas podem ser mais adequadas para a representação de modelos de referência de PDP, em relação às vistas existentes baseadas em fluxo lógico de atividades. / There is a consensus in the literature that adherence to a reference model makes product development (PD) process managing more efficient, because reference models support the representation, understanding, design and improvement of these processes. Although a variety of modeling methods are available, they are still not intensively used by the practical community. One of the possible reasons for this problem is the difficulty offered to process visualization and comprehension by views elaborated though these modeling methods. There is still a gap on the literature with respect to studies on PD reference models that consider the user perspective. This research aims to propose new views for PD reference models, which can be more effective, efficient and satisfactory than the existing ones regarding the purposes of PD reference models users. For this end, two reference models prototypes were developed, one of them with new analogic views, and another with existing activity network-based views. These prototypes were tested for usability. The results show that the proposed views were more effective, efficient and satisfactory than the traditional ones for most analyzed purposes. The conclusion is that analogic views can be more suitable to satisfy the purposes of users of PD reference models than activity network-based views.

Há um consenso na literatura de que a aderência a um modelo de referência torna a gestão do processo de desenvolvimento de produtos (PDP) mais eficiente, pois estes auxiliam na sua representação, compreensão, elaboração, gestão e melhoria. Apesar de existirem diversos métodos de modelagem de PDP disponíveis, estes métodos são ainda pouco utilizados pela comunidade prática. Uma das possíveis causas deste problema é a dificuldade que as vistas elaboradas por estes métodos de modelagem oferecem para a visualização e compreensão do processo. Não há ainda estudos sobre a modelagem de PDP que considerem a perspectiva do usuário de forma satisfatória. Esta pesquisa tem por objetivo propor novas vistas para modelos de referencia de PDP que sejam mais eficazes, eficientes e satisfatórias no atendimento aos propósitos dos usuários de modelos de referência de PDP, em comparação com as vistas existentes. Para isso foram desenvolvidos dois protótipos de modelos de referência de PDP, um com novas vistas propostas, de caráter analógico, e um com vistas existentes, baseadas em fluxo de atividades com ligações lógicas. Esses protótipos foram submetidos a testes de usabilidade. Os resultados mostram que as vistas propostas foram mais eficazes, eficientes e satisfatórias para a maioria dos propósitos analisados. Conclui-se que vistas analógicas podem ser mais adequadas para a representação de modelos de referência de PDP, em relação às vistas existentes baseadas em fluxo lógico de atividades. / There is a consensus in the literature that adherence to a reference model makes product development (PD) process managing more efficient, because reference models support the representation, understanding, design and improvement of these processes. Although a variety of modeling methods are available, they are still not intensively used by the practical community. One of the possible reasons for this problem is the difficulty offered to process visualization and comprehension by views elaborated though these modeling methods. There is still a gap on the literature with respect to studies on PD reference models that consider the user perspective. This research aims to propose new views for PD reference models, which can be more effective, efficient and satisfactory than the existing ones regarding the purposes of PD reference models users. For this end, two reference models prototypes were developed, one of them with new analogic views, and another with existing activity network-based views. These prototypes were tested for usability. The results show that the proposed views were more effective, efficient and satisfactory than the traditional ones for most analyzed purposes. The conclusion is that analogic views can be more suitable to satisfy the purposes of users of PD reference models than activity network-based views.

This report describes a study aimed at uncovering flaws and finding potential improvements from when the modelling tool EAAT is used in conjunction with the modelling language CySeMoL. The study was performed by developing a framework and applying it on CySeMoL and EAAT in real life context networks. The framework was developed in order to increase the number of flaws uncovered as well as gather potential improvements to both EAAT and CySeMoL. The basis of the framework is a modified version of the Quality in use model from ISO/IEC 25010:2011 standard. Upon the characteristics and sub characteristics of this modified model different values for measuring usability where attached. The purpose of these values is to measure usability from the perspectives of both creating and interpreting models. Furthermore these values are based on several different sources on how to measure usability. The complete contents of the framework and the underlying ideas, upon which the framework is based, are presented in this report. The framework in this study was designed in order to enable it to be used universally with any modelling language in conjunction with a modelling tool. Its design is also not limited to the field of computer security and computer networks, although that is the intended context of CySeMoL as well as the context described in this report. However, utilization outside the intended area of usage will most likely require some modifications, in order to work in a fully satisfying. Several flaws where uncovered regarding the usability of CySeMoL and EAAT, but this is also accompanied by several recommendations on how to improve both CySeMoL and EAAT. Because of the outline of the framework, the most severe flaws have been identified and recommendations on how to rectify these shortcomings have been suggested.