Nowadays, concerns related to mankind’s increasing and destructive impact on the environment have influenced and changed the paradigms of product development; this in turn has brought about the appearance of environmental considerations in the creation and design of new products. Numerous industrial sectors have changed their processes of product development and production to meet the ecological requirements. Issues such as the scarcity of natural resources, increasing consumption and increasing pollution also present a number of problems. This article presents a process of comparing new alternatives with a specific methodology of decision-making. It is primarily focused on the use of rare natural materials and resources that are extracted and processed.
The necessity for the knee prosthesis is confirmed by the large increase in the number of patients suffering from arthrosis, which is a present-day disease. Despite this need, there doesn’t exist an optimal knee prosthesis. Nowadays the development of the knee prostheses is progressing. It is very difficult to define the required geometry with traditional methods, because the movement conditions to be created by the prostheses should be similar to the movements of the human knee. During previous research the biomechanical research team of the Szent István University occupied with experimental measurements of the healthy human knee joint movement. In this paper I would like to introduce a method of prosthesis geometry development. As a result, a knee prosthesis geometry has been created which is approaching the movement form of the real human knee joint.
Gyula Korsoveczki, Géza Husi and Timotei István Erdei
The aims of this paper are the development and testing of the pneumatic and output system of the FANUC Spider selecting robot that can be found at the Mechatronics Department, Engineering Faculty of the University of Debrecen. As a result the robot was shown to be capable of several working procedures with the use of the pneumatic vacuum gripper and the use of digital outputs.
This study describes 5G, the latest wireless technology that is currently under development. It will ensure increased bandwidth as well as newer and higher quality antennas. 5G is actually about further developing 4G/LTE. Due to the rapidly growing number of network devices, the current LTE technology will soon be unsatisfactory in terms of quality of service (QoS), therefore a new concept is needed.
The solution to this problem depends on the quality and complexity of the antennas, as well as traffic management. The planned Fifth Generation Network focuses on these issues to provide more accessible, faster, and more reliable services. The new technology will offer a lot of opportunities for IoT compatible devices such as self-driving vehicles or those used in healthcare. In our opinion we will soon achieve a world of unlimited Internet access.
It is particularly important for the French political leadership to maintain French independence, to develop military defense capabilities and to maintain a balance between budgetary constraints. The publication presents a European way of continuously modernizing the French army and modernizing its technical tools. France has one of the strongest and most powerful armed forces characterized by adapting NATO-based applications and procedures.
The tools of multi-directional machining, having appeared in the recent years, have revolutionised turning operations. The chip removal of high feed roughing and finishing inserts is so specialised, that new formulas have to be introduced instead of those used so far. In this paper, the result of tests carried out up till now will be summarised; furthermore, a proposal will be made on the description, analysis and calculation of force demand of multi-directional inserts as well as the roughness of the surface being prepared during machining.
Attila Zakariás, Tamás László, Csaba Krizbai, Tamás Szabó and Norbert Demeter
In the 21. century, the job of a horticulturist is made easier with the help of a thermogradient table, with which the developmental stage of plants in different temperature conditions can be observed, this way, a plant's optimal ambient temperature can be found. The price of a thermo-gradient table is very high, it can reach thousands of euros. This is the reason why we had the idea of making our own thermo-gradient table, which is much more competitive, and can ease our institution horticulturist’s work.
Nowadays, the biometric identifier’s world is one of the most rapidly developing security technology areas. Within the biometric identification, the research team worked in the area of gait recognition. The research team developed a complex walking recognition system in NI LabVIEW environment that can detect multiple simultaneous reference points using a universal camera and capable of matching a predetermined curve to the collected samples. In the first version, real-time processing was done with a single camera, while in the second, two high-resolution cameras work with post-processing. The program can compare and evaluate the functions that are matched to the reference curve and the current curve in a specific way, whether two walking images are identical. The self-developed gait recognition system was tested on several test subjects by the research team and according to the results, the False Acceptance Rate was zero.
Nowadays one of the main lines of development in aerial craft is the design and construction of unmanned aerial vehicles (UAV’s). Within this wide topic, development of ultralight (UL) aircrafts is especially popular because of their versatility and relative low cost. My task was to design the shape of an airplane wing-fuselage junction, which will be classified as an ultralight and unmanned aerial vehicle. The most optimal wing-fuselage junction is made with the Ansys simulating program, including model calculations. Based on the calculations and results, solutions can be recommended. With CAD geometry models, first stage of testing of the aircraft with 3D printed models, is prepared.
In the decades elapsed since the construction of the majority of educational buildings in Hungary, there have been various social, economic, and demographic developments that affect the utility of existing infrastructure. These changes present special requirements – those not met by existing, often heritage buildings – setting a challenge to both architects and decision makers. The aim of this study is to analyse the various aspects of these developments and reflect on the extant architectural framework of education, serving as a basis for further investigations on ways architecture can enhance the learning environment.