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The Serbian Electromagnetic Field Monitoring Network — SEMONT is based on autonomous, remote sensor nodes, capable to monitor in-situ electromagnetic field in the environment and to wirelessly communicate with the central control station, uploading/downloading data. The SEMONT information network is intended for continuous monitoring of the low and high frequency field sources, performing the assessment...
Beside the dimensions, the geometric quality of a sandwich panel is determined by the straightness and the parallelism of the edges of the panel. This in turn is highly influenced by the guide ways. The paper describes the principle and the construction of an instrument for determining the straightness and the relative parallelism of the guide ways of a sandwich panel producing machine.
Nowadays the vast amount of text-based information stored in organizations requires different approaches and new tools in order to manage it adequately. This paper presents Hypatia, a support expert system for documentation departments and regular users that exploits not only local information, but also external resources from the Web (e.g., Linked Data). The expert system uses different modules:...
This paper presents the applicability of neural networks and graph structuring methods in the field of computer networks administration. As data transmission infrastructures have become large technology interconnected domains, the utilizations and performances of these networks, are having various influential factors that act on their overall well functioning and impose a constant tuning of the communication...
Autocorrelation is a widely used statistical tool for determining periodicity and the fundamental period of a time-series. Calculating the autocorrelation function Rxx(k), we cross-correlate the signal with itself in order to detect non-randomness or to find repeating patterns. A continuous output, autocorrelation algorithm is proposed here which is able to detect periodicity in motor behaviour of...
Implementation of modeling methods and representations then integrating them in increasingly virtual engineering systems provide new possibilities and challenges for product related engineering. Considering the latest developments in lifecycle management of product information, this paper gives analysis of developing methodology in virtual way of engineering. Results of this analysis are utilized...
Clinical chemistry tests are widely used in medical diagnosis. Physicians typically interpret them in a univariate sense, by comparing each parameter to a reference interval, however, their correlation structure may also be interesting, as it can shed light on common physiologic or pathological mechanisms. The correlation analysis of such parameters is hindered by two problems: the relationships between...
The aim of this paper is to compare descriptive and predictive qualities of multivariate TAR models with threshold variables obtained via aggregation functions versus one-dimensional TAR models with endogenous as well as exogenous threshold variables. Time series of REIT indexes of 5 selected G7 countries (USA, Japan, Great Britain, France, Canada) were modelled. They manifest similar behaviour in...
Integration of engineering activities from first idea to recycling of product yielded product lifecycle management (PLM) systems. Classical PLM system relies upon highly integrated physical level model of product. This integration does not support multidisciplinary product engineering because capability of classical PLM modeling can not provide the demanded unified modeling mechanism for different...
In this paper binary matrices are reconstructed from two orthogonal projections. In the reconstruction process particle swarm optimization is used. Since most of the reconstruction problems are NP-hard, the use of a global optimization process gave promising results. The task is to adjust the particle swarm algorithm to the problem of the reconstruction of binary matrices. The main focus is on the...
This paper analyzes and presents impact of two types of the objective image quality assessment measures, no-reference and full-reference measures, on perception quality of 3D image using fuzzy logic estimator namely the Takagi-Sugeno-Kang fuzzy model. Based on the choice of two types of model's inputs, a comparative analysis is performed in this paper. All parameters of the no-reference and full-reference...
The aim of this study is to determine the intervertebral stress that leads to spine musculoskeletal affections. To determine the intervertebral stress, the L4 and L5 vertebras were made by using rapid prototyping. Between the vertebras the intervertebral disc was made by using silicon material. In the intervertebral disc five force sensors were inserted. A STEWART platform was used to remake the vertebra's...
In this paper, the definitions of central g-moments of the order n, n ∊N for random variables and g-expectation for a random variable are given. With the suitable choice of the generator g, and choosing different values for n, it is possible to calculate central g-moments of the order n even for a random variable f for which neither expectation nor higher moments do not exis
Agglutinative languages, such as Hungarian, use inflection to modify the meaning of words. Inflection is a string transformation which describe how can a word converted into its inflected form. The transformation can be described by a transformational string. The words can be classified by their transformational string, so inflection is considered as a classification. Linear separability of clusters...
The aim of this paper is to give a short overview of the methods that we have used in spectroscopy of microscopic images in order to improve perception and manipulation of small objects. The methodology itself is illustrated through several examples, together with short comments on related issues.
The paper elaborates the complexity and importance of modeling Internet traffic. In this sense, having in mind the nature of Internet traffic as well as actual information in this sphere, it was emphasized that there is no universally applicable model. This standpoint has initiated the idea of examining the possibility of approximation internet traffic. Because of the rather suitable property, namely...
This paper describes the advantages of using mobile devices and the so-called active learning method in higher education. The authors use their methodological experiences to include m-learning in their teaching process, focusing specifically on higher education and engineering students. The paper also describes the authors' motivation for expanding the existing e-learning projects with mobile learning...
This paper presents a novel technique for soft tissue model parameter estimation using experimental data. The most commonly used linear mass-spring-damper models are discussed and investigated in details, extended with two more complex, yet significantly more effective modeling approaches. The transfer functions of these models are created, and the analytical response curves are fit to the experimental...
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