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Unified Modeling Language (UML) is a modeling standard that has been commonly used in the software industry. However, students face difficulties while learning how to model complete and correct UML diagrams. One of the reasons is the way UML has been taught. In order to improve the effectiveness of learning it is necessary to employ methods in which the students actively take part in the learning...
We have witnessed the exponential growth of 3D GIS applications which vary from 3D urban management, a heritage city, archaeology, flood controlling, planning and designing, and government planning, to name a few. Thanks to the diversity of 3D models that are used to represent objects in reality and spatial database systems that are utilized to store spatial data, designers and developers can explore...
There is a gap between research and practice of automated and algorithmic debugging. In order to close this gap, we claim to search for niches where research techniques and methods can be more easily applied and tested under realworld development conditions. In particular, we discuss the niche of spreadsheet fault localization as one very promising area and present the current state of research in...
Computational modeling is the process of programming models of machines, circuits, buildings, phenomena etc. This activity has been widely researched and used in practice at different levels of formal education for a student to learn concepts and techniques on engineering, natural sciences, economics, demography, geography etc. via model programming. Abduction is a type of reasoning that aims to formulate...
System specifications can be modeled using various types of notations and diagrams regarding applications of the particular model. In this paper, we present an overview of the existing solutions, focusing on UML, BPMN and DMN models and the diagrams provided by these notations. We perform a comparison of these approaches and provide examples of representing system requirements in these notations.
The purpose of this research study is to investigate the problems of design and requirements to diagnostic automated systems based on image processing. To realize the research purpose, the authors designed a conceptual model, a use case diagram, and a prototype of automated system object model.
The program environment for electromechanical system analysis based on object-oriented approach and authorial method of mathematical modeling is presented. This environment allows constructing computer models of comprehensive electrotechnical systems with semiconductor converters. Such computer models are distinguished by the high operation speed and ability of real-time operation in interaction with...
Designing controllers to orchestrate repetitive compute flows in both embedded and multi-node heterogeneous compute systems can be a tedious activity that gets increasingly difficult as more constraints are placed on compute elements and the system and as internal connections get more complex. It becomes difficult to manually analyze the timing characteristics and resource utilization profiles for...
Although insufficient software scalability and bad resource management can easily consume any potential savings from cloud deployment, the scalability of software executed on the cloud empowers the software designer, who can fully control the trade-offs between the incurred cost of running an application and the delivered quality-of-service. To capitalize on this control, the designer needs to be...
Designing model-based physical systems has growing demand in consequence of increasing system complexity. In particular, observers/estimators are extensively used for the applications requiring state or disturbance estimation. Designing and deploying such numerically intensive physical systems onto embedded targets is a challenging task that requires codesign among various stakeholders from different...
Thermal regulation of aircraft cabins requires controlling the temperature of supplied fresh air. State of the art plant architectures support only a small number of temperature zones. In this paper we consider a novel architecture that allows an arbitrary number of temperature zones. This is bought at the expense of a more complex control problem. Control challenges connected to this novel architecture...
The exponential growing effort, cost and time investment of complex systems in modeling phase emphasize the need for a methodology, a framework and a environment to handle the system model complexity. For that, it is necessary to be able to measure the system model entropy. This paper highlights the requirements a model needs to fulfill to match human user expectations. It suggests a hierarchical...
Fluid simulation, specifically the Material Point Method (MPM) based simulation, requires a large number of particles and a big grid size to create a realistic looking simulation. This paper explains what we can do to improve the performance of the simulation by using compute shader and the strategy behind it. Compute shader is a shader used for General Purpose Graphics Processing Unit (GPGPU) programming,...
Recommender systems that utilize pertinent and available contextual information are applicable to and useful in a broad range of domains. This paper utilizes context-aware recommendation to facilitate personalized education and assist students in selecting courses (or in non-traditional curricula, learning artifacts) that meet curricular requirements, leverage their skills and background, and are...
The purpose of this study is to estimate the effects of hand washing, cleaning, cohorting, isolation rooms and duration of cleaning on Methicillin Resistant Staphylococcus Aureus (MRSA) colonization and infections. The study uses spatially explicit agent-based modeling approach together with a Susceptible-Exposed-Infected-Recovered (SEIR) to characterize infection spread in an 8-bedroom personal care...
Software fault prediction models are employed to optimize testing resource allocation by identifying fault-prone classes before testing phases. We apply three different ensemble methods to develop a model for predicting fault proneness. We propose a framework to validate the source code metrics and select the right set of metrics with the objective to improve the performance of the fault prediction...
In order to improve the evacuation ability of the transfer station in Subway network operation, this research selected a complex subway transfer station, analyzed facilities and equipment of this transfer station, based on the social force model, the AnyLogic software was applied to simulate the emergency evacuation, calculated the time required for passenger evacuation in peak flow, the simulation...
The large software applications of today provide abstractions of the real-life systems that they support. A digital model of the system, and of the changes that occur within, are being maintained and updated, as triggered by real-life events. Morphologically, such applications contain several distinct architectural entities: databases holding the state, central components describing how the system...
Phased-mission system (PMS) can have a number of mission phases with different system configurations of components. In engineering practice, there exist PMSs that have phases with time redundancy, meaning that the system is required to work in operational state for only a given duration of time within such phase, instead of all the phase duration like traditional PMS. For such complex PMS, it is not...
Some aspects of hardware-in-the-loop simulation are examined in application of an intra-group interaction wireless radio networks research. The focus of the paper is on efficient use of hardware resource during channel simulation. The obtained results provide an optimal parameters selection for simulation under given network characteristics.
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