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  • MTS pilot tone tracking for "wow" distortion determination

    Publication

    Artykuł przedstawia nowy algorytm do wyznaczania charakterystyki kołysania dźwięku na podstawie śledzenia zmian tonu pilota MTS. Śledzenie zmian częstotliwości nośnej tonu MTS pozwala określić zmienną w czasie głębokość pasożytniczych modulacji częstotliwości będących konsekwencją kołysania. Na tej podstawie tworzona jest charakterystyka zniekształcenia. Proponowany algorytm bazuje na zaproponowanej wcześniej metodzie śledzenie...

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  • Optical low-coherence interferometry for selected technical applications

    W artykule przedstawiono teoretyczne podstawy optycznej interferometrii niskokoherentnej i przedyskutowano jej unikatowe właściwości. Opisano w nim opracowany przez autorów system OCT przeznaczony do badań strukturalnych materiałów technicznych. Badania te obejmują także zmiany stanu polaryzacji promieniowania rozproszonego w badanym obiekcie. W artykule zawarto wyniki badań wybranych materiałów silnie rozpraszających promieniowanie...

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  • Low-cost handheld multiprobe reflectometer for the ism band

    Publication

    - Year 2008

    W artykule przedstawiona została procedura oraz działający model taniego miernika współczynnika odbicia na pasmo ISM. Koncepcja modelu oparta jest o reflektometr z multi próbkowaniem oraz wykorzystanie zintegrowanego detektora mocy firmy Analog Devices. Prototypowy miernik z interfejsem został zbudowany. Wyniki symulacji oraz eksperymentu zostały przedstawione.

  • Low-Cost Embedded Control System for Environmental Monitoring

    Publication

    - Year 2018

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  • How important are scaffolds and their surface properties in regenerative medicine

    Publication
    • J. Idaszek
    • E. Kijeńska
    • M. Łojkowski
    • W. Swieszkowski
    • M. Łojkowski

    - Applied Surface Science - Year 2016

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  • How to Tackle Bacteriophages: The Review of Approaches with Mechanistic Insight

    Publication
    • M. Karczewska
    • P. Strzelecki
    • A. Szalewska-Pałasz
    • D. Nowicki

    - International Journal of Molecular Sciences - Year 2023

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  • Influence of the Adsorption Bed Composition on the Low-Pressure Fluidization

    Publication
    • A. Kulakowska
    • A. Zylka
    • J. Krzywanski
    • D. Skrobek
    • K. Grabowska
    • M. Sosnowski
    • W. Nowak

    - Processes - Year 2023

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  • Smart Graphite–Cement Composites with Low Percolation Threshold

    Publication

    - Materials - Year 2022

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  • Development of low noise CCD readout front-end

    Publication

    - Year 2015

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  • Development of low noise CCD readout front-end

    Publication

    - Year 2015

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  • Low-Molecular-Weight Aldehyde Inhibitors of Cathepsin G

    Publication
    • A. Lesner
    • M. Wysocka
    • M. Solek
    • A. Legowska
    • K. Rolka

    - Protein & Peptide Letters - Year 2009

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  • How to measure retinal microperfusion in patients with arterial hypertension

    Publication
    • U. Szulc
    • E. Dąbrowska
    • J. Pieczyński
    • P. Białkowski
    • K. Narkiewicz
    • R. Schmieder
    • J. Harazny

    - BLOOD PRESSURE - Year 2021

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  • Low-Energy Tautomers and Conformers of Neutral and Protonated Arginine

    Publication

    - JOURNAL OF THE AMERICAN CHEMICAL SOCIETY - Year 2001

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  • Assessing pathways into a low carbon and climate responsible Gdansk

    Publication

    - Year 2014

    A basic question today is the sense of the use new ideas in shaping Polish cities- not as technologically advanced as others. The key is to understand good practices in designing and implementing new approaches. The comparative research Glasgow and Gdansk has been undertaken by Gdansk Development Agency in Jan 2014

  • The use of low-coherence interferometer for sugar content determination

    Publication

    - Year 2015

    In this article, the implementation of low-coherence interferometer with signal processing in time domain for sugar content determination in aqueous solution is presented. The elaborated measurement set-up was tested with the use of synthesized source made of two low-coherence sources. The use of two sources with dedicated parameters enabled to obtain a proper metrological parameters of the measurement system. The elaborated low-coherence...

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  • Biological hazards in low noise, poroelastic road surfaces

    Publication

    - Year 2013

    Drainage pavements as well as poroelastic pavements ("PERS") are a very efficient way to decrease traffic noise by reducing tire/road noise at the source as well as noise propagation over the road surface. Many noise generating mechanisms at the tire/road interface are very much reduced by road porosity (pipe resonance, "air pumping", Helmholtz resonance and the horn effect). A well-designed porous or poroelastic road surface may...

  • Low-Level Music Feature Vectors Embedded as Watermarks

    In this paper a method consisting in embedding low-level music feature vectors as watermarks into a musical signal is proposed. First, a review of some recent watermarking techniques and the main goals of development of digital watermarking research are provided. Then, a short overview of parameterization employed in the area of Music Information Retrieval is given. A methodology of non-blind watermarking applied to music-content...

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  • How Specific Can We Be with k-NN Classifier?

    Publication

    This paper discusses the possibility of designing a two stage classifier for large-scale hierarchical and multilabel text classification task, that will be a compromise between two common approaches to this task. First of it is called big-bang, where there is only one classifier that aims to do all the job at once. Top-down approach is the second popular option, in which at each node of categories’ hierarchy, there is a flat classifier...

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  • CMOS Low-Dropout Regulator With Improved Time Response

    Publication

    - Year 2011

    Przedstawiono nową konfigurację regulatora o obniżonym spadku napięcia, w którym wykorzystano stopień wyjściowy z równoległym sprzężeniem napięciowym. Dzięki obniżonej rezystancji wyjściowej stopnia, uzyskano poprawę odpowiedzi impulsowej regulatora na szybką zmianę prądu wyjściowego.

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  • Analog multiplier for a low-power integrated image sensor

    Artykuł przedstawia nowe podejście do projektowania tanich niskomocowych zintegrowanych sensorów optycznych. W odróżnieniu od wcześniej stosowanych rozwiązań opartych na masowym przetwarzaniu równoległym, zaproponowany mnożnik macierzowy charakteryzuje się korzystniejszymi cechami. Proponowane rozwiązanie, chociaż mniej elastyczne w sensie liczby możliwych do zaimplementowania algorytmów wstępnej obróbki obrazu, cechuje się znaczącą...

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  • Low sulphur coal combustion - Optimisation of boiler tunings.

    Publication

    - Year 2009

    Badaniami w ramach projektu objęto przede wszystkim kotły parowe oraz układy wspomagające, takie jak: podajniki węgla, młyny, wentylatory, instalacje oczyszczania spalin. Badania eksperymentalne przeprowadzono na obiektach Elektrociepłowni Kraków, natomiast obliczenia numeryczne zostały wykonane przez Politechnikę Wrocławska we współpracy z firmą R&D EDF. Sformułowano szereg konkretnych wytycznych do przeprowadzenia niezbędnych...

  • Low-Sulphur Marine Fuels—Panacea or a New Threat?

    Publication

    - Year 2021

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  • Sensorless multiscalar controls of induction motor at low speed

    Publication

    - Year 2005

    W artykule przedstawiono zastosowanie obserwatora prędkości w dwóch różnych układach sterowania multiskalarnego silnikiem klatkowym. Pierwszy układ bazuje na prądzie stojana i strumieniu wirnika, natomiast drugi nowy układ wykorzystuje zmienne prąd stojana i strumień stojana. Zamieszczono wyniki badań symulacyjnych i eksperymentalych w układzie ze sterowaniem na procesorze SHARC.

  • Wow detection and compensation employing spectral processing of audio.

    Praca zawiera opis opracowanych algorytmów detekcji i kompensacji pasożytniczych modulacji częstotliwości wynikających z nierównomiernego przesuwu nośnika dźwięku. Proponowane metody opracowano ze szczególnym uwzględnieniem przypadkowych zniekształceń drżenia obecnych w archiwalnych filmowych ścieżkach dźwiękowych. Dodatkowo algorytmy badają wpływ zniekształceń na strukturę formantową sygnałów. Analiza zmian położenia formantów...

  • New algorithms for wow and flutter detection and compensation in audio

    W referacie przedstawiono nowe metody dyskryminacji naturalnych efektów muzycznych i pasożytniczych zniekształceń drżenia dźwięku. Dodatkowo, opisano w nim metody wyznaczania przebiegu zniekształceń drżenia. Wśród nich znajdują się: detekcja okresowości sygnału w poszczególnych ramkach czasowych, śledzenie zmian przydźwięku sieciowego wykorzystujące modelowane AR widma sygnału, śledzenie zmian wysokoczęstotliwościowego prądu podkładu....

  • Design of low noise preamplifers for characterization of LSCO bolometers

    Publication

    - Year 2005

    W artykule przedstawiono wymagania stawiane układom do pomiaru szumów bolometrów. Ze względu na niski poziom mierzonych szumów układy te wymagają zastosowania niskoszumnych przedwzmacniaczy i układów ustalających punkt pracy badanych detektorów. Omówiono konstrukcje dwóch przedwzmacniaczy z zintegrowanymi układami polaryzacji. Przedstawiono wyniki pomiarów szumów w zakresie częstotliwości 10-90Hz. Przedstawiono możliwości ulepszenia...

  • Hydrogen degradation of high strength low alloyed steels.

    Publication

    Badano wpływ polaryzacji katodowej na własności stali węglowej, stali o podwyższonej i wysokiej wytrzymałości metodą stałego powolnego odkształcania.Stwierdzono, że stopień kruchości wodorowej każdej z badanych stali zależał od stężenia wodoru dyfuzyjnego.

  • An advanced low-cost sensorless induction motor drive

    Publication

    - IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS - Year 2003

    W artykule przedstawiono układ sterowania silnikiem asynchronicznym klatkowym pracujący bez pomiaru prędkości obrotowej. Układ zrealizowano na tanim procesorze stałoprzecinkowym. aspekty praktyczne realizacji układu rozpatrzono na podstawie uzyskanych wyników z symulacji i eksperymentu.

  • How Machine Learning Contributes to Solve Acoustical Problems

    Publication
    • M. A. Roch
    • P. Gerstoft
    • B. Kostek
    • Z. Michalopoulou

    - Journal of the Acoustical Society of America - Year 2021

    Machine learning is the process of learning functional relationships between measured signals (called percepts in the artificial intelligence literature) and some output of interest. In some cases, we wish to learn very specific relationships from signals such as identifying the language of a speaker (e.g. Zissman, 1996) which has direct applications such as in call center routing or performing a music information retrieval task...

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  • Emerging oxidized and defective phases in low-dimensional CrCl3

    Publication
    • D. Mastrippolito
    • L. Ottaviano
    • J. Wang
    • J. Yang
    • F. Gao
    • M. Ali
    • G. D'Olimpio
    • A. Politano
    • S. Palleschi
    • S. Kazim... and 8 others

    - Nanoscale Advances - Year 2021

    Two-dimensional (2D) magnets such as chromium trihalides CrX3 (X ¼ I, Br, Cl) represent a frontier for spintronics applications and, in particular, CrCl3 has attracted research interest due its relative stability under ambient conditions without rapid degradation, as opposed to CrI3. Herein, mechanically exfoliated CrCl3 flakes are characterized at the atomic scale and the electronic structures of pristine, oxidized, and defective...

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  • Low-Power WSN System for Honey Bee Monitoring

    Publication

    - Year 2019

    The paper presents a universal low-power system for biosensory data acquisition in scope of bees monitoring. We describe the architecture of the system, energy-saving components as well as we discuss the selection of used sensors. The work focuses on energy optimization in a scope of wireless communication. A custom protocol was implemented, which is the basis for presented energy-efficient devices. Data exchange process during...

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  • LEAN MANAGEMENT IN HIGHER EDUCATION INSTITUTIONS. HOW TO BEGIN?

    The objective of this article is to present an outline of a concept aimed at identifying the possibilities of using Lean Management foundations in determining the sources of irregularities occurring in university processes from the perspective of various stakeholder groups. A research methodology is presented that creates the basis for initiating programmes modernising university processes in line with the principles of the LM...

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  • Low energy electron mass stopping power in H2

    Publication

    We present experimental mass stopping powers of electrons in gaseous H2 obtained with a newly developed electron time-of-flight spectrometer, for the incident electron energy range of 10eV to 25eV. In our procedure the average energy loss is derived from our conversion of measured electron time-of-flight spectra into equivalent electron energy loss spectra so as to obtain the values of mass stopping power for electron scattering...

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  • How Swiss Watchmaking Brands are Communicating Made in Switzerland

    Publication

    - Year 2023

    Country-of-origin indications, also called “made in” labeling [35], are utilized in marketing strategies by companies to distinguish themselves from others, trying to associate their products with positive characteristics [9]. Swiss watchmaking companies have an iconic status that is essential to their reputation - mainly due to their high quality, precision, innovation, and craftsmanship [7]. They are also using country-of-origin...

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  • Zastosowanie systemów chatter-bot do wspomagania zarządzania

    Publication

    Celem rozdziału jest analiza systemów przetwarzania języka naturalnego do wspomagania zarządzania na przykładzie chatter-botów - tzw. wirtualnych konsultantów - systemów informatycznych, które potrafią odpowiadać na pytania zadawane w języku naturalnym. Przedstawiono zakres zastosowań systemów, główne czynniki wpływające na ich funkcjonalność, analizę kosztów wdrożenia i efektywności inwestycji oraz przykłady komercyjnych zastosowań.

  • New algorithms for wow and flutter detection and compensation in audio

    W referacie przedstawiono nowe metody dyskryminacji naturalnych efektów muzycznych i pasożytniczych zniekształceń drżenia dźwięku. Dodatkowo, opisano w nim metody wyznaczania przebiegu zniekształceń drżenia. Wśród nich znajdują się: detekcja okresowości sygnału w poszczególnych ramkach czasowych, śledzenie zmian przydźwięku sieciowego wykorzystujące modelowane AR widma sygnału, śledzenie zmian wysokoczęstotliwościowego prądu podkładu....

  • Politics and urban artifacts in cities: what are they and how are they interconected?

    This research, analyses the effect of politics on a city and its image, via their control over the formation or changes on urban artifacts. It analyses the concepts introduced in Aldo Rossi’s architectural monograph, The Architecture of the City, in the chapter titled ‘Politics as Choice’, and his idea that a city’s image is a reflection of its political institutions and the choices people in authority make. Monuments and architecture...

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  • Low Cost Method for Location Service in the WCDMA System

    A new and low cost method for a location service (LCS) in the Wideband Code Division Multiple Access (WCDMA) system is outlined. This method, which is called TDOA + RTT, enables calculation of the geographical position of a mobile station (MS) without knowledge of relative time differences (RTDs) between base stations (BSs). The TDOA+RTT method is based on the measurement of round trip times (RTTs) between the MS and the serving...

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  • Experimental test of nonclassicality with arbitrarily low detection efficiency

    Publication

    - PHYSICAL REVIEW A - Year 2020

    We theoretically introduce and experimentally demonstrate the realization of a nonclassicality test that allows for arbitrarily low detection efficiency without invoking an extra assumption of independence of the devices. Our test and its implementation is set in a prepare-and-measure scenario with an upper limit on the classical communication capacity of the channel through which the systems are communicated. The essence for our...

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  • Shear resistance of low height precast concrete lintels

    The scope of the paper is to investigate analytically and determine experimentally the shear resistance of low height reinforced precast concrete lintels. The chosen procedures included in national and international standards applied for the design of structural concrete elements to an estimation of shear behaviour of reinforced concrete elements are described. The characteristic and designed shear strength of precast concrete...

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  • How ethics combine with big data: a bibliometric analysis

    The term Big Data is becoming increasingly widespread throughout the world, and its use is no longer limited to the IT industry, quantitative scientific research, and entrepreneurship, but entered as well everyday media and conversations. The prevalence of Big Data is simply a result of its usefulness in searching, downloading, collecting and processing massive datasets. It is therefore not surprising that the number of scientific...

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  • How to Sort Them? A Network for LEGO Bricks Classification

    Publication

    LEGO bricks are highly popular due to the ability to build almost any type of creation. This is possible thanks to availability of multiple shapes and colors of the bricks. For the smooth build process the bricks need to properly sorted and arranged. In our work we aim at creating an automated LEGO bricks sorter. With over 3700 different LEGO parts bricks classification has to be done with deep neural networks. The question arises...

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  • Low-coherence photonic method of electrochemical processes monitoring

    We present an advanced multimodality characterization platform for simultaneous optical and electrochemical measurements of ferrocyanides. Specifcally, we combined a fber-optic Fabry– Perot interferometer with a three-electrode electrochemical setup to demonstrate a proof-ofprinciple of this hybrid characterization approach, and obtained feasibility data in its monitoring of electrochemical reactions in a boron-doped diamond flm...

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  • How to fund an additional secular function in the monumental church?

    Publication

    - Year 2018

    The implementation of a new public function into the non-used church spaces like attics or cellars in context of revitalizing a lawfully protected historical city areas have diversified aspects. The article describes the financial aspect of adaptation of omitted spaces of monumental sacral buildings by presenting funding possibilities in the European Union countries available in period of 2017-2018 and the funds planned for the...

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  • Corrosion of evaporator tubes in low emission steam boilers

    Publication

    Purpose of this paper is to reveal the mechanisms of corrosion processes of outer surfaces of low-emission steam boiler evaporator tubes. Examinations were performed to find the reasons of different corrosion susceptibility of tubes situated at combustion chamber on various levels. Examinations were conducted on several segments of 57 x 5.0 mm evaporator tubes made of 16M (16Mo3) steel grade. Segments were taken from level of...

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  • How to model ROC curves - a credit scoring perspective

    Publication

    - Year 2018

    ROC curves, which derive from signal detection theory, are widely used to assess binary classifiers in various domains. The AUROC (area under the ROC curve) ratio or its transformations (the Gini coefficient) belong to the most widely used synthetic measures of the separation power of classification models, such as medical diagnostic tests or credit scoring. Frequently a need arises to model an ROC curve. In the biostatistical...

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  • How to provide fair service for V2I communications in VANETs?

    Publication

    In this paper, we focus on fairness issues of Vehicle-to-Infrastructure (V2I) communications. In particular, we show that under a common technique of selection of RSUs by OBUs based on the received signal strength, a vast variability of a number of OBUs connected to RSUs can be observed leading to inefficient/unfair service provided by RSUs. To overcome this problem, we propose an algorithm for RSU selection called RSEL to obtain...

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  • Voltage Conditions in Low Voltage Grid with Connected Mictogeneration

    Publication

    - Acta Energetica - Year 2017

    The introduction of distributed generation into a low voltage grid may cause voltage problems in it. The paper discusses the effect of microgeneration on voltage levels in a low voltage grid. A real low voltage grid of considerable length was selected for the analysis. The grid primarily supplies residential buildings in a rural area. Results of tests that consider potential measures which could be applied in this grid to improve...

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  • Polarisation effects in low-energy positron–molecule scattering

    The UK molecular R-matrix method has been adapted to treat positron collisions from polyatomic targets. A simple empirical enhancement factor which corrects for the underestimation of electron–positron polarisation and correlation effects in the calculations performed with the static-plus-polarization model at low scattering energies is presented. Application of this model to positron scattering from carbon dioxide at energies...

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  • How can analysts use multicriteria decision analysis?

    Proper decision making in multifacitated situation is very challenging task. It is especially difficult if there are many alternatives and criteria that are often contradictory. Analytical chemistry and related sciences involve many situations where decisions on complex problems are made. The support tools may be the use of MCDA (Multi-criteria Decision Analysis) algorithms. They formalize the decision process, make it transparent...

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