Authors:Daniel Buček, Martin Orfánus, and Peter Dušička
This paper presents a proprietary open source code for analysis of granulometric properties of bed load material based on non-intrusive automated image analysis. Vertical bed-surface images are processed using the proposed tool and verified with results obtained by well tested optical granulometry tool Basegrain. The practical application of the proposed tool yields accuracy comparable that of the tested framework and traditional sampling methods. Additionally, results showed that the average D50 grain-size sampled from riverbed of studied river section of river Danube agrees up to 95% with the average D50 sampled from riverbanks.
Authors:Tomáš Krejèí, Tomáš Koudelka, and Jaroslav Kruis
This paper is devoted to a computer simulation of coupled-thermo-hydro mechanical analysis of concrete structures. The attention is concentrated to concrete structures at early stage, when hydration heat evolution and moisture content changes can influence significantly the reliability and service life of these structures. The results of computation are illustrated by the simulation of a foundation slab, which is situated in the basement of the administration building Prague-Tìšnov, Czech Republic. The Künzel and Kiessl approach is used to analyze heat and moisture fields and it is extended by a set of climatic conditions and by a model of hydration heat evolution in concrete. The problem is solved using the open source program SIFEL.
Authors:Jaroslav Kruis, Tomáš Koudelka, and Tomáš Krejčí
This paper is devoted to efficient computer implementation of coupled salt and moisture transport processes. Three material models are summarized first and then a general form of coupled transport processes is formulated. The system of balance equations is solved numerically with the help of the Galerkin method (in space) and the generalized trapezoidal rule time integration. Implementation of the transport processes into the open source computer program SIFEL is briefly described.
, studying this issue with conventional methods is not possible [ 6 ]. The complexity of this issue is partly due to the nature of the units themselves. Individual units are “Closed-Source”: unlike “Open-Source” projects, there is no way to access or directly
Authors:Milica Budimir, Duška Kleut, Biljana Todorovic Markovic, and Rabah Boukherroub
spot where the control K/rGO-CS interface touched the agar plate, and almost no bacteria in the place where NIR laser exposed K/rGO-CS interface was in direct contact with the agar plate. Statistical analyses were performed by ImageJ open-source
company with measurement range up to 4 meters and low power consumption, these sensors are connected to the MATLAB via an Arduino microcontroller board of type Arduino Mega 2560 from Arduino company, which is an Atmel AVR® microcontroller-based open-source
Authors:Amin Damanjani, Mohamad Hosseini Abardeh, Azita Azarfar, and Mehrdad Hojjat
. Hastings , and X. Zhao , “ An opensource analogue to digital converter for power system measurements with time synchronisation ,” in 2017 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) , 2017 , pp. 1 – 5 .  J. C
The aim of this paper is to introduce the design steps and implementation details of a system, which combines modern web-technologies and open-source simulation software to create a virtual laboratory framework. In order to validate the functionality of this framework and to demonstrate its capabilities, a classic experiment from the field of control theory was implemented; the inverted pendulum. In this experiment, a simulated controller keeps the rod of the pendulum in an upright position. Users can change different parameters of the model and then test the impact of these changes in a very intuitive and interactive way, by applying force to the pendulum model in 3D and observing the behavior of the controller.