The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Developing product variants with respect to satisfying diverse customer needs with reasonable costs in terms of mass customization has been recognized as a new paradigm for today's manufacturing. In mass customization, products are usually made of several modules while each module is composed of several numbers of variants. High number of product variants is achieved through a combination of assembled...
Wide range of software from business intelligence (BI) category are used in almost every big company. They allow users to create various reports and analyses. BI idea was primary used for business data, but now many companies like Wonderware, Rockwell are offering solutions for manufacturing data, so new form of intelligence was formed. It is called Manufacturing intelligence or Enterprise intelligence...
Nowadays, thanks to the improving capabilities and decreasing price of microcontrollers, the embedded market experiences an explosive growth. Silicon vendors integrate more and more peripherals into these devices enabling them to perform more complex functions. Due to these tendencies, embedded device development became a software heavy task, requiring productivity. To improve business agility traditional...
Distributed computing is widely used nowdays. Its computational power and memory resources are vital for computations with large-scale datasets, which cannot be handled with a stand-alone system. Pregel is a novel graph distributed computing model, featuring vertex-centric computing, divided into a set of supersteps. In this paper we propose a new algorithm called Pregel Computing Model Algorithm...
In addition to the classical forms of teaching and learning, due to today's changed way of life and society, the atypical forms of learning have an increasing role. These represent those progressive learning forms which are not necessarily tied to educational institutions, not in the traditional sense of lessons, lectures and seminars. In atypical learning the studying individual chooses the academic...
Training for mentor teachers has been from 2011 at Obuda University Trefort Agoston Centre for Engineering Education - OU TACEE. Mentor teachers can support the preparation process of our engineering teacher students in secondary vocational schools by coaching their teaching practice. We recognized that data collection and processing was important for Mentor teachers in their work. Therefore, we involved...
Since 2011, we have been educating mentor teachers at Obuda University Trefort Agoston Centre for Engineering Education - OU TACEE. Mentor teachers can support the preparation process of our engineering teacher students in secondary vocational schools by coaching their teaching practice. I am responsible for teaching six subjects. In the first semester I gave examples on how to create good presentations...
Nowadays, with enhancing possibilities of the Internet usage, the number of its users grows as well. People use it more and more to communicate among themselves. This kind of communication plays a significant role in the decision-making process. Based on this finding, a need to analyze the content of the ample web discussions (so-called conversational content) using the computers arose. Therefore,...
Mobile Ad-hoc Networks (MANET) are increasingly employed in tactical military and civil rapid-deployment networks, including emergency rescue operations and ad hoc disaster-relief networks. When compared to wired and base station-based wireless networks: MANETs are susceptible to both insider and outsider attacks. This is mainly because of the lack of well-defined defense perimeter. In this paper,...
Generalized one-sided concept lattices (GOSCL) represent an FCA-like method for analysis of object-attribute models with different types of attributes. Since the number of concepts can be exponential with respect to the number of objects in a model, study of various reduction methods represents one of the most recognized problems in FCA. One of such reduction is possible, provided that a Moore co-family...
This paper presents an analysis of implementation and awareness regarding ICT in teaching among class and special subject teachers. It also provides an analysis and comparison of TIE curricula in the Republic of Serbia and Hungary.
CAM systems are most widespread way to create cnc programs. Possibility of optimization, simulation of machining, shorter lead time, and flexibility are biggest benefits. Some of most used CAM systems are GibbsCam, PowerMill, AlphaCam, Surfcam, and Edgecam. Next article shows making of NC program in Edgecam. Edgecam was chosen because is user friendly and simple programs can be created without deeper...
The fuzzy logic controller, FLC, it is part of the control with artificial intelligence (AI), and implies obtaining of improved signal wave forms at output and reduction of oscillations (such as output speed variation, torque variation, current variation for the three phases) comparatively with the classic control. This paper presents two cases of FLC for exterior permanent magnet synchronous machines,...
The objects of the study including determining the relationships between movements of upper extremities identifying joint angles using a fuzzy logic system (FS). The authors analyzed ranges of joint angles and simple rhythmical movement: swinging segments of walking subjects' arms moving in-phase (synchronously) or anti-phase (reciprocally), and designed fuzzy expert system which has never been described...
Image sharpness measurements are important parts of many image processing applications. To measure image sharpness multiple algorithms have been proposed and measured in the past but they have been developed with having out-of-focus photographs in mind and they do not work so well with images taken using a digital microscope. In this article we show the difference between images taken with digital...
Image sharpness is an important part of the overall quality of an image. There are multiple metrics to evaluate image sharpness, the algorithms are mainly created for regular desktop computers. This article describes the sharpness metrics devised and implemented at Obuda University parallelized and ported to an HPC infrastructure. Along with the native ported application a workflow has been created...
This paper presents a dedicated software (as well as the associated hardware) used for power quality analysis. Power quality is one of the important objectives of the transmission and distribution network allover the world. Several aspects concerning the PQ monitoring interface between the transmission network and the distribution network are revealed for a 110 kV voltage level. This is a case study...
The paper presents a new internal combustion engine construction. The introductory part analyses the evolution of the antecedents, first the screw compressor line, than the progressive cavity type constructions. As a consequent step of the motor evolution it describes the model of a new three dimensional rotary combustion engine that has some advantageous features relatively to the existing motors...
This article is about next generation knowledge management technologies. The original approach was to externalize the tacit knowledge of human beings. Store the externalized content, mainly text or data based documents, later multimedia contents. Handle these documents in different data bases, together with their metadata. The new associative data models will be able to handle the stored content units...
Last decades have introduced different improvements into healthcare information systems domain including features like open interfaces to clinical facilities, improved patients registers, connectivity to insurance companies, and clinical pathways and workflows. The last named - clinical pathways and workflows - is a part of a complex area known as process modeling and architecture and except the control...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.