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81 results on '"NEMEC, Zdenek"'

1. Passage Detection of a Train via a Reference Point

Author

Rejfek, Lubos, Pidanic, Jan, Stursa, Dominik, Nguyen, Tan N., Tran, Phuong T., Nemec, Zdenek, Zalabsky, Tomas, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Li, Yong, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Oneto, Luca, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zamboni, Walter, Series Editor, Zhang, Junjie James, Series Editor, Tan, Kay Chen, Series Editor, Trong Dao, Tran, editor, Hoang Duy, Vo, editor, Zelinka, Ivan, editor, Dong, Chau Si Thien, editor, and Tran, Phuong T., editor

Published
2024
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2. Methods of Signal Detection and Recognition to Perform Frequency Resource Sharing in Cognitive Radio Networks

Author

Bezruk, Valeriy, Ivanenko, Stanislav, Fedorov, Oleksii, Němec, Zdeněk, Pidanič, Jan, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Hirche, Sandra, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Li, Yong, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Möller, Sebastian, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zamboni, Walter, Series Editor, Zhang, Junjie James, Series Editor, Klymash, Mikhailo, editor, Beshley, Mykola, editor, and Luntovskyy, Andriy, editor

Published
2022
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6. Person Detection for an Orthogonally Placed Monocular Camera

Author

Skrabanek, Pavel, Dolezel, Petr, Nemec, Zdenek, and Stursa, Dominik

Subjects
Neural networks, Algorithms, Neural network, Algorithm, Transportation industry
Abstract

Counting of passengers entering and exiting means of transport is one of the basic functionalities of passenger flow monitoring systems. Exact numbers of passengers are important in areas such as public transport surveillance, passenger flow prediction, transport planning, and transport vehicle load monitoring. To allow mass utilization of passenger flow monitoring systems, their cost must be low. As the overall price is mainly given by prices of the used sensor and processing unit, we propose the utilization of a visible spectrum camera and data processing algorithms of low time complexity to ensure a low price of the final product. To guarantee the anonymity of passengers, we suggest orthogonal scanning of a scene. As the precision of the counting is relevantly influenced by the precision of passenger recognition, we focus on the development of an appropriate recognition method. We present two opposite approaches which can be used for the passenger recognition in means of transport with and without entrance steps, or with split level flooring. The first approach is the utilization of an appropriate convolutional neural network (ConvNet), which is currently the prevailing approach in computer vision. The second approach is the utilization of histograms of oriented gradients (HOG) features in combination with a support vector machine classifier. This approach is a representative of classical methods. We study both approaches in terms of practical applications, where real-time processing of data is one of the basic assumptions. Specifically, we examine classification performance and time complexity of the approaches for various topologies and settings, respectively. For this purpose, we form and make publicly available a large-scale, class-balanced dataset of labelled RGB images. We demonstrate that, compared to ConvNets, the HOG-based passenger recognition is more suitable for practical applications. For an appropriate setting, it defeats the ConvNets in terms of time complexity while keeping excellent classification performance. To allow verification of theoretical findings, we construct an engineering prototype of the system., Author(s): Pavel Skrabanek (corresponding author) [1]; Petr Dolezel [2]; Zdenek Nemec [2]; Dominik Stursa [2] 1. Introduction In passenger transport, person flow monitoring has an indispensable importance. In some areas [...]

Published
2020
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14. NEW SYSTEMS OF ENERGY RECOVERY AND ELECTRIC-HYDRAULIC BATTERY MOBILE DRIVE.

Author

NEVRLY, JOSEF, FICHTA, MARTIN, JURIK, MIROSLAV, NEMEC, ZDENEK, PROCHAZKA, PETR, KOUTNY, DANIEL, and PETROVIC, RADOVAN

Subjects
ROAD rollers, DIESEL motors, ELECTRIC batteries, ELECTRIC drives, HYDRAULIC models, EXCAVATING machinery, TECHNOLOGICAL innovations
Abstract

The article presents a brief overview of new electric-hydraulic systems of three selected earthmoving machines developed by means of mathematical modeling and simulation. These machines were as follows: a road tire roller, an excavator and a wheel loader. Their common feature was that a special innovative system was developed for each of them by Bosch Rexroth company (Brno) in cooperation with BUT (Brno University of Technology) using mathematical modeling of hydraulic, mechanical and electrical processes in the machines. Each of these machines represents an innovation: a module for the recovery of kinetic ("braking") energy was developed for the road roller, and an emission-free electric battery drive for the excavator and the loader as a replacement for the diesel engine drive. [ABSTRACT FROM AUTHOR]

Published
2022
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18. Enterprise API Management

Author

Weir, Luis, "z" Nemec, Zdenek, Weir, Luis, Weir, Luis, "z" Nemec, Zdenek, and Weir, Luis

Abstract

A strategy and implementation guide for building, deploying, and managing APIs Key Features Comprehensive, end-to-end guide to business-driven enterprise APIs Distills years of experience with API and microservice strategies Provides detailed guidance on implementing API-led architectures in any business Book Description APIs are the cornerstone of modern, agile enterprise systems. They enable access to enterprise services from a wide variety of devices, act as a platform for innovation, and open completely new revenue streams. Enterprise API Management shows how to define the right architecture, implement the right patterns, and define the right organization model for business-driven APIs. Drawing on his experience of developing API and microservice strategies for some of the world's largest companies, Luis Weir explains how APIs deliver value across an enterprise. The book explores the architectural decisions, implementation patterns, and management practices for successful enterprise APIs, as well as providing clear, actionable advice on choosing and executing the right API strategy in your enterprise. With a relentless focus on creating business value, Luis Weir reveals an effective method for planning, building, and running business products and services with APIs. What you will learn Create API strategies to deliver business value Monetize APIs, promoting them through public marketplaces and directories Develop API-led architectures, applying best practice architecture patterns Choose between REST, GraphQL, and gRPC-style API architectures Manage APIs and microservices through the complete life cycle Deploy APIs and business products, as well as Target Operating Models Lead product-based organizations to embrace DevOps and focus on delivering business capabilities Who this book is for Architects, developers, and technology executives who want to deliver successful API strategies that bring business value.

Published
2019

27. An optimization of a PHD function for association of targets on multistatic radar

Author

Pidanic Jan, Bhattacharjee Ratnajit, Trivedi Gaurav, Nemec Zdenek, Shejbal Tomas, and Dolecek Radek

Subjects
Continuous-wave radar, Space-time adaptive processing, Bistatic radar, Radar tracker, Radar engineering details, Computer science, Multistatic radar, Electronic engineering, Probability density function, Algorithm
Abstract

In this paper an optimization scheme about the association of targets on multistatic radar system is discussed. The association of targets based on Probability Hypothetic Density function (PHD) is a challenging task for the parallel programming techniques. In this paper, a comparison of PHD computations between serial and optimized versions of the proposed algorithm is presented. The proposed optimized algorithm was implemented on Parallel Computing Toolbox under Matlab system.

Published
2014

33. Remote Control Software For Rohde And Schwarz Instruments

Author

Shejbal, Tomas, Petkov, Matej, Zalabsky, Tomas, Pidanic, Jan, and Nemec, Zdenek

Subjects
VISA, MATLAB, spectum analyzer, oscilloscope, Remote control, ComputingMethodologies_MISCELLANEOUS, Rohde&Schwarz, signal generator, SCPI, network analyzer
Abstract

The paper describes software for remote control and measuring with new Graphical User Interface for Rohde & Schwarz instruments. Software allows remote control through Ethernet and supports basic and advanced functions for control various type of instruments like network and spectrum analyzers, power meters, signal generators and oscilloscopes. Standard Commands for Programmable Instruments (SCPI) and Virtual Instrument Software Architecture (VISA) are used for remote control and setup of instruments. Developed software is modular with user friendly graphic user interface for each instrument with automatic identification of instruments., {"references":["Pieper, J. M. Automatic Measurement Control: A tutorial on SCPI and\nIEEE 488.2. München: Rohde & Schwarz GmbH & Co. KG, 2007.\nISBN 3939837024.","IEEE Standard Codes, Formats, Protocols, and Common Commands. for\nUse With ANSI/IEEE Std 488.1-1987 IEEE Standard Digital Interface\nfor Programmable Instrumentation, ANSI/IEEE Std 488.2-1987, 1988.","National Instruments VISA. (online). 2013. Available:\nhttp://www.ni.com/visa/.","Rohde & Schwarz. How to Use Rohde & Schwarz Instruments in\nMATLAB: Application Note (PDF). 2012. Available: http://www.rohdeschwarz.\ncz/cz/service_and_support/downloads/Application_Notes/?quer\ny=1MA171.","Instrument Control Toolbox. (online). 2013. Available:\nhttp://www.mathworks.com/products/instrument/.","Rohde & Schwarz. Instrument drivers. (online). 2013. Available:\nhttp://www.rohde-schwarz.com/en/driver/instrument-drivers/instrumentdrivers_\n113817.html.","Rohde & Schwarz. Products. (online). 2013. Available:\nhttp://www.rohde-schwarz.com."]}

Published
2013
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39. The Time Difference of Arrival Estimation of Wi-Fi Signals

Author

Nemec, Zdenek, Bezousek, Pavel, Nemec, Zdenek, and Bezousek, Pavel

Abstract

The papers deals with a modeling of a Time- Difference of Arrival system for a subscriber station localization, based on the 802.11 standard wireless network. In the case of severe multipath effects the standard TDOA estimation methods, based on correlation of signals, received by conveniently displaced receiving stations show large errors. Thus, a new algorithm is proposed using received signals decomposition to a set of delayed replicas. This represents a linear estimation of reflected signals amplitudes. The described method leads to a better estimation of time differences of the signals, propagating on the direct paths between the emitter and the receiving stations.

Published
2008

42. UWB Propagation through Walls

Author

Schejbal, Vladimir, Bezousek, Pavel, Cermak, Dusan, Nemec, Zdenek, Fiser, Ondrej, Hajek, Martin, Schejbal, Vladimir, Bezousek, Pavel, Cermak, Dusan, Nemec, Zdenek, Fiser, Ondrej, and Hajek, Martin

Abstract

The propagation of ultra wide band (UWB) signals through walls is analyzed. For this propagation studies, it is necessary to consider not only propagation at a single frequency but in the whole band. The UWB radar output signal is formed by both transmitter and antenna. The effects of antenna receiving and transmitting responses for various antenna types (such as small and aperture antennas) are studied in the frequency as well as time domain. Moreover, UWB radar output signals can be substantially affected due to electromagnetic wave propagation through walls and multipath effects.

Published
2006

43. Multipath Propagation of UWB Through-Wall Radar and EMC Phenomena

Author

Schejbal, Vladimir, Cermak, Dusan, Nemec, Zdenek, Pidanic, Jan, Konecny, Jiri, Bezousek, Pavel, Fiser, Ondrej, Schejbal, Vladimir, Cermak, Dusan, Nemec, Zdenek, Pidanic, Jan, Konecny, Jiri, Bezousek, Pavel, and Fiser, Ondrej

Abstract

The UWB (ultra wide band) radar output signals can be substantially affected due to electromagnetic wave propagation through obstacles (such as walls) and multipath effects, too. Multipath effects are analyzed and simulated numerically for various cases with several antenna heights and distances. Delays (due to propagation through walls and various paths of direct and reflected rays) and the ringing (similar to UWB propagation through wall) can be clearly observed and analyzed. Moreover, frequency spectra analyses can demonstrate both UWB interferences and susceptibility from electromagnetic compatibility (EMC) viewpoint.

Published
2006

48. UWB through-wall propagation measurements

Author

Nemec, Zdenek, primary, Mrkvica, Jan, additional, Schejbal, Vladimir, additional, Cermak, Dusan, additional, Bezousek, Pavel, additional, Jerabek, Josef, additional, and Sikl, Radim, additional

Published
2006
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