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Interoperability, flexibility, and adaptability are key requirements of future internet applications. Convergence of contents, services, things, and networks can be the cornerstone to fulfill these requirements. Such rich and composite sources of data and processing capabilities call for a structured and formal approach that manages and capitalizes heterogeneous information. This paper proposes an approach to the run-time composition of software system architectures, aimed at addressing goals revealed at runtime. The approach is grounded on a graph model characterized by two control levels: a metamodeling and an instantiation level. At metamodeling level, the graph describes facts that may occur in a scenario of interest, processes triggered by facts, and technologies available to execute processes. The actual occurrence of facts, together with the deriving processes and technologies, is managed at instantiation level, with reference to an application-specific model. In particular, the paper proposes an algorithm that determines an optimal way to manage a change in the run-time environment, by finding a minimum cost path in the model. The usefulness of the proposed approach and its applicability to actual scenarios have been validated in an example smart home environment.

The present paper proposes a solution to the problem of improving the accuracy of cost estimation at the initiation stage of a project for the development of a software product, the main module of which is a knowledge-based mathematical module. The approach of used system modeling is described, aimed at simplifying the process of analyzing the complexity of the system and improving the accuracy of assessing labor costs. The result of the work is a validation of the proposed approach, performed on the comparison of the expert assessment, the obtained assessment after modeling the system, and actual labor costs. © Published under licence by IOP Publishing Ltd. The article was prepared with the financial support of the Center of Competence "System Engineering" established within the International Scientific and Methodological Center for the Transfer of Competencies of the Digital Economy Ural Federal University, created following the Agreement dated 09.12.2019 No. 075-15-2019-1907. The team of authors also thanks ABC Solution for providing the source materials for the architectural descriptions of the system in question.

Ecosystem degradation and environmental urban development create a new trend in the context of global ecological crisis. This trend involves the need to shift urban facilities to sustainable development, which in turn is linked to the necessity to modernize urban environment in the view of comfort, economy, and ecological compatibility. The design of sustainable cities plays a natural catalytic role for change and improvement of the environment quality. This paper analyses sustainable development strategies and methodological principles of sustainable architecture in particular, which served as a basis to define a set of core principles of establishing architectural solutions of energy-efficient buildings such as urban, architectural and planning, design concepts as well as the principles of the use of renewable energy. The project of energy-efficient school in Gaziantep, Turkey, being the sustainable architectural model, was used as an example to show the application of the methodology and demonstrate the comprehensive integration of engineering, architectural and energy-efficient solutions into the facility in question. © 2016 The Authors.

Software-Defined Networking (SDN) is a novel architectural model for cloud network infrastructure, improving resource utilization, scalability and administration. SDN deployments increasingly rely on virtual switches executing on commodity operating systems with large code bases, which are prime targets for adversaries attacking the net- work infrastructure. We describe and implement TruSDN, a framework for bootstrapping trust in SDN infrastructure using Intel Software Guard Extensions (SGX), allowing to securely deploy SDN components and protect communication between network endpoints. We introduce ephemeral flow-specific pre-shared keys and propose a novel defense against cuckoo attacks on SGX enclaves. TruSDN is secure under a powerful adversary model, with a minor performance overhead., Comment: SecureComm 2016 12th EAI International Conference on Security and Privacy in Communication Networks October 10-12, 2016 Guangzhou, People's Republic of China

Self-adaptive systems are modern applications in which the running software system should be able to react on its own, by dynamically adapting its behavior, for sustaining a required set of qualities of service, and dynamic changes in the context or in user requirements. They are typically involved in Future Internet development such as the Internet of Things where interoperability, flexibility, and adaptability are key requirements. Convergence of contents, services, things and networks seems to be the cornerstone to fullfil these requirements. We propose a reflective approach to provide a common abstraction for automating the deployment of component based applications in the Internet of Things environment. The proposed framework allows the design of heterogeneous, distributed, and adaptive applications built on the component based software engineering paradigm. The framework considers a metamodel instantiated in a Rest middleware properly modified for allowing different implementations by using reflective design patterns. We are currently working to refine the framework metamodel and to validate it in several implementation domains.

The approaches used to model communication protocols suffered several changes in past years. Some of the modeling languages are not used anymore because of their complexity, others because of their inherent limitations that were pointed out over time. Even today an approach that can represent a protocol in many abstraction levels is welcome. The objective of this article is to introduce an approach to model a communication protocol using the Unified Modeling Language (UML). The purpose is to create models that are able to represent an Internet architecture in many abstractions levels and different concerns, including structural level and services definitions. Besides, we propose an evaluation of the generated model, showing main advantages, such as representing architectural modeling, and limitations, such as representing time, non-functional constraints and physical resources when modeling communication protocols using UML

Research and development on Computer Aided Architectural Design often focuses on simulating a building as a digital model. Our research on the early design stages explores concepts we feel are lacking in current design tools and research projects. Building models are usually static models, serving as a snapshot of the design. We aim to support design phase and scale level transitions, to better support the workflow of the designer. This paper formulates our approach at supporting transitions in an integrated design environment for architecture. ispartof: pages:829-836 ispartof: Digital Design: The Quest for New Pardigms pages:829-836 ispartof: eCAADe location:Lisbon (Portugal) date:21 Sep - 23 Sep 2005 status: published

The benefits of including virtual humans into cultural heritage reconstructions are twofold: the realism of architectural models is increased by populating them and, as well, it allows to preserve the intangible heritage describing how people in historical times behaved. We present a case study, where we create an interactive real-time scenario of a virtual audience in an ancient Roman odeon in Aphrodisias. Based on historical sources, we reconstruct both the building and the people. Inhabited virtual heritage applications require careful balancing of computational resources between the visualization of environment and the visualization of people. We describe several techniques that allow us to achieve high visual quality for a large number of virtual humans rendered together with a complex architectural model while still keeping interactive framerates. An important part of the heritage recontruction is the authoring, we propose a comprehensive framework for authoring of crowd scenarios. Sponsors: ACM Special Interest Group on Computer Graphics and Interactive Techniques (SIGGRAPH) Conference code: 128927

Computational design is one of the most common tasks of immersive computer graphics projects, such as games, virtual reality and special effects. Layout planning is a challenging phase of architectural design, which requires optimization across several conflicting criteria. We present an interactive layout solver that assists designers in layout planning by recommending personalized space arrangements based on architectural guidelines and user preferences. Initialized by the designers high-level requirements, an interactive evolutionary algorithm is used to converge on an ideal layout by exploring the space of potential solutions. The major contributions of our proposed approach are addressing subjective aspects of the design to generate personalized layouts; and the development of a genetic algorithm with a multi-parental recombination method that improves the chance of generating higher quality offspring. We demonstrate the ability of our method to generate feasible floor plans which are satisfactory, based on spatial quality metrics and designers taste. The results show that the presented framework can measurably decrease planning complexity by producing layouts which exhibit characteristics of human-made design.