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Warsaw, Poland

The Warsaw University of Technology is one of the leading institutes of technology in Poland, and one of the largest in Central Europe. It employs 2,453 teaching faculty, with 357 professors . The student body numbers 36,156 , mostly full-time. There are 19 faculties covering almost all fields of science and technology. All are situated in Warsaw, except for one in Płock.The Warsaw University of Technology has about 5,000 graduates per year. According to the 2008 "Rzeczpospolita" newspaper survey, engineers govern Polish companies. Warsaw Tech alums make up the highest percentage of Polish managers and executives. Every ninth president among the top 500 corporations in Poland is a graduate of the Warsaw University of Technology. Professor Kurnik, the rector of Warsaw Tech, explained that the school provides a solid basis for the performance of managers by equipping its students with an education at the highest level and a preparation with the necessary tools and information, including knowledge of foreign languages.The origins of Warsaw University of Technology date back to 1826 when engineering education was begun in Warsaw Institute of Technology. Wikipedia.

Sokol T.,Warsaw University of Technology
Structural and Multidisciplinary Optimization | Year: 2011

The main purpose of the paper is to provide an easy-to-use code for topological optimization of the least weight trusses, written in the Mathematica programming language. The main idea of the presented approach consists in using a fixed ground structure and the linear programming formulation of the optimization problem. The solver is based on the fast interior point method. The strong effort is done to create the effective generator of the computational model utilizing the high regularity of the ground structure and the high sparsity of the geometric matrix. The efficiency and reliability of the algorithm is confirmed in several numerical tests. Due to a linear programming formulation of the optimization problem the method presented in the paper assures finding the global optimum, hence it may be considered as the useful tool for verification of results obtained in other ways. The appended complete Mathematica code of the program developed will be supplied by the Publisher on SpringerLink. © 2010 The Author(s).

Kozacki T.,Warsaw University of Technology
Optics Express | Year: 2010

In the paper Wigner Distribution (WD) representation analysis of holographic display is presented. The display reconstructs holographic image by means of Spatial Light Modulator. Two major aspects are covered: imaging and viewing. Optically reconstructed images are characterized by low and spatially variant resolution. Utilizing WD representation we present a simple formula for resolution as a function of both coordinates: transverse and longitudinal. The analysis of an aliasing effect allows for meaningful extension of the field of view. All theoretical results are proven experimentally. The WD representation of angularly and spatially limited holographic image is extended to cover its visual perception as well. Angular resolution and field of view are theoretically examined. Both monocular and binocular perception are studied and illustrated experimentally. © 2010 Optical Society of America.

Wolanski P.,Warsaw University of Technology
Proceedings of the Combustion Institute | Year: 2013

A survey of propulsion based on detonation of chemical systems is provided in this paper. After a short historical review, basic schematics of engines utilizing detonation as the combustion mechanism are described. Possible improvement of propulsive efficiency due to detonative combustion which results in a significant pressure increase is presented, and a comparison of deflagrative and detonative combustion is discussed. Basic research on Pulsed Detonation Engines (PDE) and rotating detonations in cylindrical and disk-like chambers for different mixtures is presented. Basic principles of engines utilizing Standing Detonation Waves as well as Ram Accelerators are also provided. Detailed descriptions of PDE as well as Rotating Detonation Engines (RDE) are given. Different implementations of the PDE concept are presented and experimental and theoretical results to date are reviewed. Special attention is given to RDE, since rotating detonation can be applied to all kinds of propulsive engines including rocket, ramjet, turbine, and combined-cycle engines. A survey of detonative propulsion research carried out at different laboratories is presented, and possible future applications of such propulsion systems are discussed. A short note on detonative propulsion using non-chemical energy sources is also given. © 2012 Published by Elsevier Inc. on behalf of The Combustion Institute.

This study aims to verify whether modified Support Vector Machine classifier can be successfully applied for the purpose of forecasting short-term trends on the stock market. As the input, several technical indicators and statistical measures are selected. In order to conduct appropriate verification dedicated system with the ability to proceed walk-forward testing was designed and developed. In conjunction with modified SVM classifier, we use Fishers method for feature selection. The outcome shows that using the example weighting combined with feature selection significantly improves sample trading strategy results in terms of the overall rate of return, as well as maximum drawdown during a trading period. © 2014 Elsevier Ltd. All rights reserved.

Makowski M.,Warsaw University of Technology
Optics Express | Year: 2013

Images displayed by holographic methods on phase-only light modulators inevitably suffer from speckle noise. It is partly caused by multiple uncontrolled interferences between laser light rays forming adjacent pixels of the image while having a random phase state. In this work the experimental proof of concept of an almost speckle-less projection method is presented, which assumes introducing a spatial separation of the image pixels, thus eliminating the spurious interferences. A single displayed sub-frame consists of separated light spots of very low intensity error. The sub-frames with different sampling offsets are then displayed sequentially to produce a non-fragmented color final image. © 2013 Optical Society of America.

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