Background: Supporting sustainability in software engineering is becoming an active area of research. We want to contribute the first Systematic Literature Review(SLR) in this field to aid researchers who are motivated to contribute to that topic by providing a body of knowledge as starting point, because we know from own experience, this search can be tedious and time consuming. Aim: We aim to provide an overview of different aspects of sustainability in software engineering research with regard to research activity, investigated topics, identified limitations, proposed approaches, used methods, available studies, and considered domains. Method: The applied method is a SLR in five reliable and commonly-used databases according to the (quasi-standard) protocol by Kitchenham et al. [1]. We assessed the 100 first results of each database ordered by relevance with respect to the search query. Results: Of 500 classified publications, we regard 96 as relevant for our research questions. We sketch a taxonomy of their topics and domains, and provide lists of used methods and proposed approaches. Most of the excluded publications were ruled out because of an unfitting usage of terms within the search query. Conclusions: Currently, there is little research coverage on the different aspects of sustainability in software engineering while other disciplines are already more active. Future work includes extending the study by reviewing a higher number of publications, including dedicated journal and workshop searches, and snowballing.
This paper reports about a human-robot interaction field trial conducted with the autonomous mobile robot ACE (Autonomous City Explorer) in a public place, where the ACE robot needs the support of human passers-by to find its way to a target location. Since the robot does not possess any prior map knowledge or GPS support, it has to acquire missing information through interaction with humans. The robot thus has to initiate communication by asking for the way, and retrieves information from passers-by showing the way by gestures (pointing) and marking goal positions on a still image on the touch screen of the robot. The aims of the field trial where threefold: (1) Investigating the aptitude of the navigation architecture, (2) Evaluating the intuitiveness of the interaction concept for the passers-by, (3) Assessing people's willingness to support the ACE robot in its task, i.e. assessing the social acceptability. The field trial demonstrates that the architecture enables successful autonomous path finding without any prior map knowledge just by route directions given by passers-by. An additional street survey and observational data moreover attests the intuitiveness of the interaction paradigm and the high acceptability of the ACE robot in the public place.
Software reuse is a challenging and multifaceted topic. Significant research effort has been spent to address technical and organizational aspects. However, adoption of proposed practices and novel approaches often proceeds slowly. Additionally, little is known on how reuse is currently effected in practice and which solutions have proven useful. This paper aims to shed light on the matter by studying the current practice of reuse at Google. We conduct an exploratory study with a total of 49 participants of which 39 answered our online questionnaire and 10 participated in our 1h interviews. We assess reuse practices, success factors and challenges and collect ideas for improvement.We distill our findings to provide practitioners with examples of scalable reuse practices and detail on prerequisites required to implement/tailor a similar reuse approach. Furthermore, we point out open issues to support researchers and practitioners alike to align their efforts for developing solutions.
Abstract-Modern software systems build on a significant number of external libraries to deliver feature-rich and highquality software in a cost-efficient and timely manner. As a consequence, these systems contain a considerable amount of third-party code. External libraries thus have a significant impact on maintenance activities in the project. However, most approaches that assess the maintainability of software systems largely neglect this important factor. Hence, risks may remain unidentified, threatening the ability to effectively evolve the system in the future. We propose a structured approach to assess the third-party library usage in software projects and identify potential problems. Industrial experience strongly influences our approach, which we designed in a lightweight way to enable easy adoption in practice. We present an industrial case study showing the applicability of the approach to a real-world software system.
Reuse of third-party libraries promises significant productivity improvements in software development. However, dependencies on external libraries and their APIs also introduce risks to a project and impact strategic decisions during development and maintenance. Informed decision making therefore requires a thorough understanding of the extent and nature of dependencies on external APIs. As realistically sized applications are often heavily entangled with various external APIs, gaining this understanding is infeasible with manual inspections only. To address this, we present an automated approach to analyze the dependencies of software projects on external APIs. The approach is supported by a static analysis tool featuring a visualization of the analysis results. We evaluate the approach as well as the tooling on multiple open source Java systems.
In this case study, we explore techniques for the purpose of visualizing isolated flow structures in time-dependent data. Our primary industrial application is the visualization of the vortex rope, a rotating helical structure which builds up in the draft tube of a water turbine. The vortex rope can be characterized by high values of normalized helicity, which is a scalar field derived from the given CFD velocity data. In two related applications, the goal is to visualize the cavitation regions near the runner blades of a Kaplan turbine and a water pump, respectively. Again, the flow structure of interest can be defined by a scalar field, namely by low pressure values. We propose a particle seeding scheme based on quasi-random numbers, which minimizes visual artifacts such as clusters or patterns. By constraining the visualization to a region of interest, occlusion problems are reduced and storage efficiency is gained.
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