Describing Dynamism in Service Dependencies: Industrial Experience and Feedbacks

International audienceThe rise of dynamic applications is coming with new development challenges. Indeed, dynamism is a complex concern, difficult to perceive and manage by developers. In the context of a large industrial project dealing with fleet management, we had to deal with important environmental and evolutionary dynamism. To make it easier for the development team, we have used and extended the iPOJO service component model. This paper presents how the dynamism is described in component metadata and how it is managed at runtime. The extensions have been integrated into the Apache Felix iPOJO source code

OSGi in Cloud Environments

This paper deals with the combination of OSGi and cloud computing. Both technologies are mainly placed in the field of distributed computing. Therefore, it is discussed how different approaches from different institutions work. In addition, the approaches are compared to each other

Declarative Process Mining on the Cloud

Antud magistritöö annab ülevaate deklaratiivse keele ja deklaratiivse protsessikaeve algoritmide kohta. Sellele järgneb deklaratiivse protsessikaeve tarvis kasutatavate vahendite kirjeldus. Töö tagab eelnevalt käsitletud vahendite kättesaadavust pilvplatvormil ning tutvustab kaks uut vahendit, mis pakuvad sündmuse seirevõimekust ja deklaratiivse mudeli suulise esitluse genereerimist. Kõik kirjeldatud protsessikaeve vahendid on rakendatud kimpudena pilvplatvormil RuM. Samuti on kirjeldatud uus kasutajaliides ja vahendite funktsioonid. Töö hindamisosas olid esitatud pilvel olevad kaevevahendid ja otsesündmuste seirevahendi võimed.This thesis provides an overview of the Declare language and declarative process mining algorithms, followed by the description of currently available tools for a declarative process mining. This thesis provides the availability of all the discussed tools on a cloud platform and introduces two new tools. One provides the event monitoring capabilities and and the other one generates a verbal representation of a Declare model. All the described process mining tools are implemented as bundles of the cloud platform RuM. Afterwards, the new user interface and functionalities of the tools are described. The evaluation part of the thesis presents, the mining tools on the cloud and the capabilities of the live event monitoring tool

Scalable software framework for real-time data processing in the railway environment

Background: Ticks are obligate haematophagous ectoparasites of vertebrates and frequently parasitize avian species that can carry them across continents during their long-distance migrations. Ticks may have detrimental effects on the health state of their avian hosts, which can be either directly caused by blood-draining or mediated by microbial pathogens transmitted during the blood meal. Indeed, ticks host complex microbial communities, including bacterial pathogens and symbionts. Midichloria bacteria (Rickettsiales) are widespread tick endosymbionts that can be transmitted to vertebrate hosts during the tick bite, inducing an antibody response. Their actual role as infectious/pathogenic agents is, however, unclear. Methods: We screened for Midichloria DNA African ticks and blood samples collected from trans-Saharan migratory songbirds at their arrival in Europe during spring migration. Results: Tick infestation rate was 5.7%, with most ticks belonging to the Hyalomma marginatum species complex. Over 90% of Hyalomma ticks harboured DNA of Midichloria bacteria belonging to the monophylum associated with ticks. Midichloria DNA was detected in 43% of blood samples of avian hosts. Tick-infested adult birds were significantly more likely to test positive to the presence of Midichloria DNA than non-infested adults and second-year individuals, suggesting a long-term persistence of these bacteria within avian hosts. Tick parasitism was associated with a significantly delayed timing of spring migration of avian hosts but had no significant effects on body condition, whereas blood Midichloria DNA presence negatively affected fat deposits of tick-infested avian hosts. Conclusions: Our results show that ticks effectively transfer Midichloria bacteria to avian hosts, supporting the hypothesis that they are infectious to vertebrates. Bird infection likely enhances the horizontal spread of these bacteria across haematophagous ectoparasite populations. Moreover, we showed that Midichloria and tick parasitism have detrimental non-independent effects on avian host health during migration, highlighting the complexity of interactions involving ticks, their vertebrate hosts, and tick-borne bacteria