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The web, seen as a graph of linked resources shared between microservices, can serve as an integration style. It offers unique characteristics and possibilities regarding dataflow, control flow, and other qualities, compared to file transfer, shared databases, remote procedure calls, and asynchronous messaging. Carrying these insights in your toolbox will make you aware of all the options to consider...
Results of simulation experiments with UAS crews have indicated that the crew had difficulties following rules of engagement and the law of armed conflict when engaging a target with a weapon. Defence Research & Development Canada is developing an intelligent adaptive interface, called the Authority Pathway for Weapon Engagement (APWE), which is a decision aid to support UAS crews in following...
The paper presents the application of the RFID technology in the international system of the European Union (EU) border control. The proposed architecture consists of computerized portable units (equipped with specialized devices for data acquisition) carried by border officers and the server cloud infrastructure. Among other details of the proposed system (such as QR codes or images of people trying...
Although academic and industry experts are now advocating for going from large-centralized Cloud Computing infrastructures to smaller ones massively distributed at the edge of the network, management systems to operate and use such infrastructures are still missing. In this paper, we focus on the monitoring service which is a key element to any management system in charge of operating a distributed...
Massive multiplayer online games are large-scaled distributed systems to handle a huge amount of simultaneous players. Thus, development costs can be enormous. To deal with this, it is necessary to reduce redundant development steps in such distributed systems, e.g. by using code generators and model analysers to build components from already existing knowledge. Such knowledge could be the unique...
System landscapes within logistical scenarios is highly heterogenic. Adding specific mechanisms, e.g. to support planing, monitoring and analyses for fully electrical powered vehicles, could become a mess or at least a challenge. While our project Smart City Logistic (SCL) is trying to manage this extension for multiple logistic scenarios, other projects want to do comparable system extensions as...
In the quest for energy efficiency of Information and Communication Technology, so far research has mostly focused on the role of hardware. However, as hardware technology becomes more sophisticated, the role of software becomes crucial. Recently, the impact of software on energy consumption has been acknowledged as significant by researchers in software engineering. In spite of that, measuring the...
The orchestration of application components across heterogeneous cloud providers is a problem that has been tackled using various approaches, some of which led to the creation of cloud orchestration and management standards, such as TOSCA and CAMP. Standardization is a definitive method of providing an end-to-end solution capable of defining, deploying, and managing applications and their components...
This paper explores the effectiveness of MOOS-IvP middleware for Unmanned Surface Vehicles(USV). As unmanned technology evolves, various functions are required to carry out some missions. Also, as the USVs have more sensors, the complexity of data sharing is increasing. A good solution to deal with this is middleware. The MOOS-IvP is a C++ based open source publish-subscribe middleware. It consists...
Today, health research and health care generate a steadily increasing amount of data. Making these available for secondary use cases is essential for efficiency gains in health research, e.g. by reducing time-and costs-intensive acquisition of data. In this contribution, we introduce our SAHRA software platform enabling reproducible research, e.g. by combining multiple data sources, performing data...
Software architecture design is a critical task as lots of requirements can be taken into account on which many decisions can be made. The maintenance and evolution of resulting models often become tricky, even impracticable when their rationale is lost. In a previous work, we introduced a set of languages used in a transformation-centric design method meant to tackle this scattering of requirements...
Multi-tenancy is a key to successful and sustainable cloud-based systems. Creating a web application framework for multiple tenants from scratch is challenging. To create an extensible, stable and robust multi-tenant web application framework developers have to understand how a web application framework is structured and how a web request is handled for each user of a specific tenant. This knowledge...
Feature location is a critical step in the software maintenance process where a developer identifies the software artifacts that need to be changed in order to fulfill a new feature request. Much progress has been made in understanding the feature location process and in creating new tools to help a developer in performing this task. However, there is still lack of support for locating architectural...
Mobile devices dominate a majority of our business and private life. The increasing number of apps and powerful hardware ensure high demand and a growing usage rate. Based on the device sizes, the space for hardware is limited and this fact impacts battery size and, therefore, battery life. Mobile phone vendors look for ways to increase battery life through hardware and software features. This paper...
Distributed systems are largely present and deployed in recent applications. Several systems have common basic requirements, which motivates to adapt reusable solutions for each family of systems. In this paper, we focus on distributed systems designed for large-scale applications requiring a high degree of Reliability and Dynamicity (ReDy distributed systems). We propose a basic architecture for...
This paper provides an introduction to the field of software engineering requires facility in architectural software design. The goal is to demonstrate the current state of the discipline and examine the ways in which architectural design can impact soft-ware design. Software architecture is used to describe a high level design methodology of large software systems. It provides the overall structure...
Stakeholders have to face requirements in increasing number and complexity. Their translations to system functionalities are often diluted into the overall architecture so that it becomes tricky to undertake future changes. Since information systems are intended to evolve in terms of functionalities and underlying technologies, the link between requirements and design artifacts is primordial. Agile...
Mobile devices have become for many the preferred way of interacting with the Internet, social media and the enterprise. However, mobile devices still do not have the computing power or battery life that will allow them to perform effectively over long periods of time or for executing applications that require extensive communication or computation, or low latency. Cyber-foraging is a technique enabling...
Mobile and other PDA devices allow us to access the World Wide Web anytime and anywhere. Developing dynamic web based applications for mobile devices is a challenging task, because these devices have limited computational resource such as CPU and Physical Memory. In order to overcome these limitations, we proposed layered architecture for the development of mobile web applications. This paper describes...
Rural digital connectivity in developing nations have failed to sustain themselves after subsidy is removed. The demography of users does not demand Internet connectivity for majority of their communication needs. This work proposes an extensible platform for rural communication utilizing delay tolerant networks. The platform allows quick development of localized applications for day to day communication...
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