Scrum for cyber-physical systems: a process proposal

Agile development processes and especially Scrum are chang- ing the state of the practice in software development. Many companies in the classical IT sector have adopted them to successfully tackle various challenges from the rapidly changing environments and increasingly complex software systems. Companies developing software for embedded or cyber-physical systems, however, are still hesitant to adopt such processes. Despite successful applications of Scrum and other agile methods for cyber-physical systems, there is still no complete process that maps their specific challenges to practices in Scrum. We propose to fill this gap by treating all design artefacts in such a development in the same way: In software development, the final design is already the product, in hardware and mechanics it is the starting point of production. We sketch the Scrum extension Scrum CPS by showing how Scrum could be used to develop all design artefacts for a cyber physical system. Hardware and mechanical parts that might not be available yet are simulated. With this approach, we can directly and iteratively build the final software and produce detailed models for the hardware and mechanics production in parallel. We plan to further detail Scrum CPS and apply it first in a series of student projects to gather more experience before testing it in an industrial case study

Continuous integration of AUTOSAR software

Die vorliegende Masterarbeit evaluiert und optimiert ein Konzept zu Continuous Integration (CI) von AUTOSAR Software der Firma Vector Informatik GmbH. Aus der Evaluierung des Konzepts folgte, dass die manuelle Konfiguration der Runtime Environment einer AUTOSAR Software, bestehend aus den Schritten Port-Mapping und Runnable-Task-Mapping, zu Problemen bei der Umsetzung der CI-Praktiken führte. Aus diesem Grund wurde als Ziel der Arbeit eine Optimierung des Konzepts durch die Automatisierung der Konfiguration festgelegt. Dazu wurde ein Ansatz zur Automatisierung des Port-Mappings und des Runnable-Task-Mappings entwickelt, welches sowohl auf Ideen aus wissenschaftlichen Publikation als auch Industriepraktiken basiert. Darauf folgte die Implementierung des Ansatzes als eine Groovy-Applikation, um anschließend eine Evaluierung basierend auf einem aktuellen AUTOSAR Projekt durchzuführen. Die Evaluierung lieferte ein positives Ergebnis in Bezug auf das Runnable-Task-Mapping, wohingegen die Verwendung des Port-Mappings für CI nur mit Einschränkungen möglich ist.This master thesis evaluates and optimizes a Continuous Integration (CI) concept for AUTOSAR software from Vector Informatik GmbH. The evaluation of the concept has shown, that the manual configuration of the runtime environment of a AUTOSAR software, consisting of the steps of port mapping and runnable task mapping, led to problems in the implementation of CI practices. For this reason, the goal of the work was to optimize the concept by automating the configuration. For this purpose, an approach for the automation of port mapping and runnable task mapping has been developed, which is based both on ideas from scientific publications as well as on industrial practices. This was followed by the implementation of the approach as a Groovy application in order to carry out an evaluation based on a current AUTOSAR project. The evaluation yielded a positive result with respect to the runnable task mapping, whereas the use of port mapping for CI is only possible with restrictions

Práticas ágeis no desenvolvimento de sistemas embutidos

Mestrado em Engenharia de Computadores e TelemáticaAs metodologias ágeis ganharam popularidade depois de um grupo de profissionais em diferentes métodos de desenvolvimento se juntar e criar um manifesto ágil. Estas metodologias foram criadas com o intuito de melhorar a forma de desenvolver software, tendo como foco principal a satisfação do cliente. Cada vez mais estão a ser usadas em diversos projetos substituindo a abordagem mais tradicional que atualmente ainda está muito presente. Por exemplo, Waterfall é uma metodologia tradicional onde todo o desenvolvimento é planeado deixando pouco espaço para alterações por parte do cliente. O interesse das empresas nestas metodologias tem aumentado. As empresas querem saber mais sobre esta nova forma de desenvolvimento e quais as vantagens que estas vão ter comparando com o seu atual método de desenvolvimento, que geralmente é um método tradicional. A aplicação de metodologias ágeis na área de programação para sistemas embutidos é diferente dos sistemas de informação. O desenvolvimento deste tipo de sistemas tem de ter em conta a parte do hardware e software. No contexto da empresa Exatronic, esta dissertação tem como objetivo investigar a abordagem ágil de forma a recomendar práticas que podem ser adaptadas por esta empresa e com elas obter melhores resultados. A empresa disponibilizou um projeto já terminado para as praticas escolhidas serem aplicadas e simuladas, tendo em conta a plataforma de desenvolvimento Atmel Studio e tipo de processadores Atmel usados pela empresa. As práticas recomendadas foram duas, integração contínua e desenvolvimento orientado por testes, pois são as únicas onde é possível criar um ambiente para a sua utilização e simulação. Por fim, são analisadas as vantagens do uso destas praticas no projeto da empresa.Agile methodologies gained popularity after a group of professionals in different development methods join and create an agile manifesto. These methodologies were created in order to improve the way to develop software, focusing mainly on customer satisfaction. They are increasingly being used in several projects, replacing the more traditional approach currently very present. For example, Waterfall is a traditional approach in which all development is planned, leaving little space for customer changes. The interest of companies in these methodologies has increased. Companies want to know more about this new way of development and what advantages they will have compared to their current development method, which is usually a traditional one. The application of agile methodologies in embedded systems is different from the informational systems. The development of such systems has to take into account the part of hardware and software. In the context of Exatronic company, this dissertation aims to investigate the agile approach in order to recommend practices that could be adapted in the company. Exatronic provided a finished project for the selected practices be implemented and simulated, taking into account the Atmel Studio development platform and the Atmel processors used by the company. The recommended practices were two, continuous integration and test driven development, because they are the only ones where is possible to create an environment for its use and simulation

Prijedlog ontološki utemeljenog metodološkog okvira za razvoj više-platformskih mobilnih aplikacija

Software development teams are faced with the lack of interoperability during the development of mobile applications for two or more target platforms. The development for second and every other platform means a new project with a need to repeat almost all the phases defined by the chosen methodology but with a narrow possibility of reuse of the already defined artifacts. The existing efforts of professional and scientific community to solve this problem have a similar approach (code once, run everywhere) with similar advantages and drawbacks. Thus, this dissertation aims to propose a different solution and is concerned with: (1) analyzing the methodologies suitable for mobile applications development, (2) observing the implementation of prototype application in order to define artifacts that are created during the development process for two target platforms, (3) semantic description of artifacts and their meaning, and (4) defining unique ontological definition as a base for methodological interoperability. The results of a systematic literature review performed on 6761 primary studies, show that current state-of-the-art literature brings only 22 development methodologies and 7 development approaches which can be identified as eligible for multi-platform mobile applications development. Among these, Mobile-D methodology accompanied with Test Driven Development was chosen and used in the observed development processes for Android and Windows Phone platforms. Total of 71 artifacts were identified and the artifacts reusability level when developing for second target platform was 66.00%. In the last research phase, the artifacts for both platforms were semantically described into a single ontological description comprising 213 classes, 14 object properties and 2213 axioms defined in ALCRIF DL expression sub-language. Having this ontology proved as correct and valid, flexible, reusable and extensible we created the basis for development of an information system to guide the development teams in a more efficient and interoperable process of multiplatform mobile applications development.Razvojni timovi susreću se s problemom neinteroperabilnosti prilikom razvoja aplikacija za dvije ili više mobilnih platformi. Razvoj aplikacije za drugu i svaku sljedeću platformu znači novi projekt u kojem je potrebno ponovno provesti većinu faza definiranih odabranom metodikom razvoja, pri čemu se kreirani artefakti teško ili uopće ponovno ne koriste. Napori profesionalne i znanstvene zajednice za rješenjem ovog problema imaju sličan pristup (kodiraj jednom, koristi svugdje), slične prednosti, ali i zajedničke nedostatke. Stoga ova disertacija navedenom problemu pristupa na nov način i bavi se: (1) analiziranjem metodika pogodnih za razvoj mobilnih aplikacija, (2) promatranjem razvoja prototipne aplikacije u svrhu definiranja artefakata koji nastaju pri razvoju mobilne aplikacije za dvije ciljane platforme, (3) semantičkim opisivanjem definiranih artefakata i njihovih značenja, te (4) definiranjem jedinstvene ontološke definicije kao osnove za metodološku interoperabilnost. Rezultati sustavnog pregleda literature provedenog nad 6761 radom pokazali su da se trenutno u literaturi spominju 22 metodike i 7 pristupa koji su pogodni za razvoj više-platformskih mobilnih aplikacija. Između identificiranih metodika odabrani su Mobile-D metodika i pristup razvoju vođen testiranjem, koji su korišteni pri implementaciji prototipnog rješenja za Android i Windows Phone platformu. Ukupno je identificiran 71 artefakt pri čemu je ponovna iskoristivost artefakata pri razvoju za drugu platformu bila 66.00%. U posljednjoj su fazi istraživanja artefakti semantički opisani u zajedničku ontološku definiciju koja u konačnici sadrži 213 klasa, 14 objektnih svojstava i 2213 aksioma definiranih pomodu ALCRIF-DL jezika izraza. U radu je dokazano da je ontologija valjana, fleksibilna, ponovno iskoristiva i nadogradiva, čime je kreirana osnova za razvoj informacijskog sustava koji bi vodio razvojne timove u efikasnijem i bolje interoperabilnom procesu razvoja više-platformskih mobilnih aplikacija

Prijedlog ontološki utemeljenog metodološkog okvira za razvoj više-platformskih mobilnih aplikacija

Software development teams are faced with the lack of interoperability during the development of mobile applications for two or more target platforms. The development for second and every other platform means a new project with a need to repeat almost all the phases defined by the chosen methodology but with a narrow possibility of reuse of the already defined artifacts. The existing efforts of professional and scientific community to solve this problem have a similar approach (code once, run everywhere) with similar advantages and drawbacks. Thus, this dissertation aims to propose a different solution and is concerned with: (1) analyzing the methodologies suitable for mobile applications development, (2) observing the implementation of prototype application in order to define artifacts that are created during the development process for two target platforms, (3) semantic description of artifacts and their meaning, and (4) defining unique ontological definition as a base for methodological interoperability. The results of a systematic literature review performed on 6761 primary studies, show that current state-of-the-art literature brings only 22 development methodologies and 7 development approaches which can be identified as eligible for multi-platform mobile applications development. Among these, Mobile-D methodology accompanied with Test Driven Development was chosen and used in the observed development processes for Android and Windows Phone platforms. Total of 71 artifacts were identified and the artifacts reusability level when developing for second target platform was 66.00%. In the last research phase, the artifacts for both platforms were semantically described into a single ontological description comprising 213 classes, 14 object properties and 2213 axioms defined in ALCRIF DL expression sub-language. Having this ontology proved as correct and valid, flexible, reusable and extensible we created the basis for development of an information system to guide the development teams in a more efficient and interoperable process of multiplatform mobile applications development.Razvojni timovi susreću se s problemom neinteroperabilnosti prilikom razvoja aplikacija za dvije ili više mobilnih platformi. Razvoj aplikacije za drugu i svaku sljedeću platformu znači novi projekt u kojem je potrebno ponovno provesti većinu faza definiranih odabranom metodikom razvoja, pri čemu se kreirani artefakti teško ili uopće ponovno ne koriste. Napori profesionalne i znanstvene zajednice za rješenjem ovog problema imaju sličan pristup (kodiraj jednom, koristi svugdje), slične prednosti, ali i zajedničke nedostatke. Stoga ova disertacija navedenom problemu pristupa na nov način i bavi se: (1) analiziranjem metodika pogodnih za razvoj mobilnih aplikacija, (2) promatranjem razvoja prototipne aplikacije u svrhu definiranja artefakata koji nastaju pri razvoju mobilne aplikacije za dvije ciljane platforme, (3) semantičkim opisivanjem definiranih artefakata i njihovih značenja, te (4) definiranjem jedinstvene ontološke definicije kao osnove za metodološku interoperabilnost. Rezultati sustavnog pregleda literature provedenog nad 6761 radom pokazali su da se trenutno u literaturi spominju 22 metodike i 7 pristupa koji su pogodni za razvoj više-platformskih mobilnih aplikacija. Između identificiranih metodika odabrani su Mobile-D metodika i pristup razvoju vođen testiranjem, koji su korišteni pri implementaciji prototipnog rješenja za Android i Windows Phone platformu. Ukupno je identificiran 71 artefakt pri čemu je ponovna iskoristivost artefakata pri razvoju za drugu platformu bila 66.00%. U posljednjoj su fazi istraživanja artefakti semantički opisani u zajedničku ontološku definiciju koja u konačnici sadrži 213 klasa, 14 objektnih svojstava i 2213 aksioma definiranih pomodu ALCRIF-DL jezika izraza. U radu je dokazano da je ontologija valjana, fleksibilna, ponovno iskoristiva i nadogradiva, čime je kreirana osnova za razvoj informacijskog sustava koji bi vodio razvojne timove u efikasnijem i bolje interoperabilnom procesu razvoja više-platformskih mobilnih aplikacija

Prijedlog ontološki utemeljenog metodološkog okvira za razvoj više-platformskih mobilnih aplikacija

Software development teams are faced with the lack of interoperability during the development of mobile applications for two or more target platforms. The development for second and every other platform means a new project with a need to repeat almost all the phases defined by the chosen methodology but with a narrow possibility of reuse of the already defined artifacts. The existing efforts of professional and scientific community to solve this problem have a similar approach (code once, run everywhere) with similar advantages and drawbacks. Thus, this dissertation aims to propose a different solution and is concerned with: (1) analyzing the methodologies suitable for mobile applications development, (2) observing the implementation of prototype application in order to define artifacts that are created during the development process for two target platforms, (3) semantic description of artifacts and their meaning, and (4) defining unique ontological definition as a base for methodological interoperability. The results of a systematic literature review performed on 6761 primary studies, show that current state-of-the-art literature brings only 22 development methodologies and 7 development approaches which can be identified as eligible for multi-platform mobile applications development. Among these, Mobile-D methodology accompanied with Test Driven Development was chosen and used in the observed development processes for Android and Windows Phone platforms. Total of 71 artifacts were identified and the artifacts reusability level when developing for second target platform was 66.00%. In the last research phase, the artifacts for both platforms were semantically described into a single ontological description comprising 213 classes, 14 object properties and 2213 axioms defined in ALCRIF DL expression sub-language. Having this ontology proved as correct and valid, flexible, reusable and extensible we created the basis for development of an information system to guide the development teams in a more efficient and interoperable process of multiplatform mobile applications development.Razvojni timovi susreću se s problemom neinteroperabilnosti prilikom razvoja aplikacija za dvije ili više mobilnih platformi. Razvoj aplikacije za drugu i svaku sljedeću platformu znači novi projekt u kojem je potrebno ponovno provesti većinu faza definiranih odabranom metodikom razvoja, pri čemu se kreirani artefakti teško ili uopće ponovno ne koriste. Napori profesionalne i znanstvene zajednice za rješenjem ovog problema imaju sličan pristup (kodiraj jednom, koristi svugdje), slične prednosti, ali i zajedničke nedostatke. Stoga ova disertacija navedenom problemu pristupa na nov način i bavi se: (1) analiziranjem metodika pogodnih za razvoj mobilnih aplikacija, (2) promatranjem razvoja prototipne aplikacije u svrhu definiranja artefakata koji nastaju pri razvoju mobilne aplikacije za dvije ciljane platforme, (3) semantičkim opisivanjem definiranih artefakata i njihovih značenja, te (4) definiranjem jedinstvene ontološke definicije kao osnove za metodološku interoperabilnost. Rezultati sustavnog pregleda literature provedenog nad 6761 radom pokazali su da se trenutno u literaturi spominju 22 metodike i 7 pristupa koji su pogodni za razvoj više-platformskih mobilnih aplikacija. Između identificiranih metodika odabrani su Mobile-D metodika i pristup razvoju vođen testiranjem, koji su korišteni pri implementaciji prototipnog rješenja za Android i Windows Phone platformu. Ukupno je identificiran 71 artefakt pri čemu je ponovna iskoristivost artefakata pri razvoju za drugu platformu bila 66.00%. U posljednjoj su fazi istraživanja artefakti semantički opisani u zajedničku ontološku definiciju koja u konačnici sadrži 213 klasa, 14 objektnih svojstava i 2213 aksioma definiranih pomodu ALCRIF-DL jezika izraza. U radu je dokazano da je ontologija valjana, fleksibilna, ponovno iskoristiva i nadogradiva, čime je kreirana osnova za razvoj informacijskog sustava koji bi vodio razvojne timove u efikasnijem i bolje interoperabilnom procesu razvoja više-platformskih mobilnih aplikacija