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Acta Universitatis Sapientiae, Electrical and Mechanical Engineering
The Journal of Sapientia Hungarian University of Transylvania
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Survey of Collaborative Data Mining

. 1029–1039. [16] Witten, Ian H., et al. Data Mining: Practical machine learning tools and techniques. Morgan Kaufmann, 2016. [17] Zhan, Justin. “Privacy-preserving collaborative data mining.” Computational Intelligence Magazine, IEEE 3.2 (2008): 31-41.

Open access
About the Profile Accuracy of the Involute Gear Hob

] Yefim, Kotlyar, (2000). “Precision Finish Hobbing”, in Gear technology magazine, vol. 17, nr.4 , 2000. pp. 22-26. Retrieved on 16.04.2015, from http://www.lmt-tools.de/verzkat/page119.html #/124 [6] *** DIN 3972. Wälzfräser-Bezugsprofile [7] Hollanda, D., “Bazele așchierii și generării suprafețelor II”. lecture notes, Petru Maior University of Tîrgu-Mureș, 1994. [8] Dudás, I., Bányai, K., Varga, Gy., “Simulation of meshing of worm gearing”, in American Society of Mechanical Engineers, Design Engineering Division (Publication) DE 88 , 1996, pp

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The Demonstration Model of an Electromagnetic Accelerator Gun

Abstract

These days a lot can be heard about special weapons which accelerate the projectile not based on the traditional, chemical energy release, but providing the muzzle velocity with the help of electromagnets. In English terminology, many descriptions can be read about these devices, referred to as “coilgun”. There are so many hobbyist and amateurs who make these devices [1,2] and publish their results on the internet [3,4]. The purpose of the project is dual. On one hand, features, advantages, disadvantages and the limits of the electromagnetically accelerated weapons can be found by building an experimental tool. On the other hand, it was intended to point out the fact that anybody can build such a tool using commercially available commercial components. Although the muzzle energy of the device presented in this paper is not more than 6.8J, but it can cause serious injury. The paper also points out that in a similar way, still not using special components, a weapon can be made with a larger (10-20J) muzzle energy.

Open access
GNU Radio Based Testbed (GRaTe-BED) for Evaluating the Communication Link of Unmanned Aerial Systems

Abstract

UAS (Unmanned Aerial Systems) are commonly used in 3D (dull, dirty and dangerous) missions, because these are not endangering the operators life, while reduce maintenance costs and increase maneuvering capabilities. Despite of these advantages we should consider the possible vulnerabilities of this technology as well. Unmanned vehicles can be controlled via direct communication link, or they can work in a preprogrammed mode. Usually the preprogrammed mode is based on radio navigation systems, so we can draw a conclusion that both depend on the RF environment. In this paper I analyze a possibility to effectively evaluate the communication link of an UAS. Developers have to consider several key factors (type of operation, endurance, payload type and size, propulsion, communication link, etc.) during the development process. They are also responsible that the final product meets the predefined requirements. On the other side commercial UAS owners should have a possibility to compare and evaluate the UAS before the acquisition. Finally, operators and frequency management entities need tools to diagnose the possible sources of interference regarding the unmanned vehicles. To understand the consequences of interference in the RF spectrum we have to be able to measure the quality of the communication link in different usage scenarios. In my research I evaluate the usage of SDRs (Software Defined Radios) in RF Test and Evaluation processes. After analyzing the possibilities for a flexible testbed, I demonstrate the usability with some measurements in the GNU Radio signal processing framework.

Open access
Evaluation of Different Thin-Client Based Virtual Classroom Architectures

Conference on Cloud Computing Technology and Science , 2010, pp. 480-487. [10] Kaur D., Bhathal G. S., “Thin Client Cloud Computing: An Overview”, International Journal for Multi Disciplinary Engineering and Business Management , Volume-2, Issue-1, pp. 8-10, 2014. [11] MSDN blog Tools to simulate CPU / Memory / Disk Load, Windows sysinternals CPU Stress application: http://blogs.msdn.com/b/vijaysk/archive/2012/10/27/tools-to-simulate-cpu-memory-diskload.aspx . [12] Pék G., Buttyán L., Bencsáth B., “A Survey of Security Issues in Hardware Virtualization

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Information and Communications Technology
in the 21st Century Classroom
Open access
Estimation of Power and Delay in CMOS Circuits using Leakage Control Transistor

coverage of VLSI Implementation technologies, Electronic Design Automation Tools and FPGA Design Black Book”, 2014 Edition. [4] Zhang Zhigang,Wang Jingqin,Wang Li,Wang Meng “Reliability Evaluation of Low-volatage Switchgear Based on Maximum Entropy Principle “, TELKOMNIKA Journal, vol.15, no.1, pp. 101-108, March 2017. [5] Kanan Bala Ray,Sushanta K.Mandal,B.S.Patro”Low Power FGSRAM Cell Using Sleepy and LECTOR Technique “, Indonesian Journal of Electrical Engineering and Computer Science, vol.4, no.2, pp. 333-340, November 2016. [6] NarenderHanchate

Open access