Software architecture is one of the most important tools for designing and understanding a system, whether that system is in preliminary design, active deployment, or maintenance. Scenarios are important tools for exercising an architecture in order to gain information about a system’s fitness with respect to a set of desired quality attributes. This paper presents a set of experiential case st...

This article reports on a simulation and scenario analysis of Chinese passenger vehicle growth and resulting energy demand and CO2 emissions. The model includes provincial level logistic growth functions with saturation levels representative of neighboring Asian economies, income growth measured in international dollars, and both estimated and literature-based income elasticities. Scenarios exp...

Software architecture constitutes a promising approach to the development of large-scale distributed systems, but architecture description languages (ADLs) and their associated architectural analysis techniques suffer from several important shortcomings. This paper presents a novel approach that reconceptualizes ADLs within the model-driven engineering (MDE) paradigm to address their shortcomin...

Adequate models of complex interacting systems need to be of a high degree of detail. It is however a common observation that a sufficiently high level of detail decreases the intelligibility of the models whereas it increases the complexity of numerical analysis beyond reasonable and realistic borders. This leads us to the idea of scenariodriven modeling, which focuses on the most interesting ...

The behavior of a system comprised of collaborating components tend to be difficult to analyze, especially if the system consists of a large number of concurrently operating components. We propose a scenario-based approach for analyzing component compositions that is based on Use Case Maps (UCMs), but is extended with a few additional constructs for modeling component interfaces and connections...

The aim of this research paper is to simulation and design of wireless network by using NS-2 simulation tool. A Wi-Fi technology is used to analyzing packet flow in UDP and TCP protocol. This paper also analyze packet drop rate in UDP and TCP protocol during wireless data transmission and a brief compare of AODV and DSDV routing protocol. Keywords— LAN, MAN, NS2, AODV, TCP, UDP, WIRELESS.

Land use and land cover patterns are shaped by the interplay of human and ecological processes. Thus, heterogeneous cultural landscapes have developed, delivering multiple ecosystem services. To guarantee human well-being, the development of land use types has to be evaluated. Scenario development and land use and land cover change models are well-known tools for assessing future landscape chan...

The rapid development of the number and the size of Online Social Network (OSNs) makes the analysis of Social Internetworking Scenarios (SIS’s) extremely challenging. In a SIS, a user can join multiple OSNs and two users can interact with each other even though they joined different OSNs and did not know each other. While OSNs have been extensively studied in the last years, the most peculiar a...