Wyniki wyszukiwania dla: WATER MODEL COMPARISON

Porównano wyniki oznaczeń aktywności przeciwgrzybowej voriconazolu- nowego leku przeciwgrzybowego z pierścieniem azolowym, z lekami poprzedniej generacji. Zaobserwowano znaczny spadek aktywności biologicznej voriconazolu (podobnie jak starszych leków, takich jak fluconazol czy ketoconazol) względem komórek wielolekoopornych, co stanowi przesłankę, że nowy lek jest substratem dla głównych pomp kształtujących zjawisko wielolekooporności...

IT- enabled comparison of environmental noise levels and noise-evoked hearing impairments.

Publikacja

A. Czyżewski
J. Kotus
B. Kostek
K. Kochanek
H. Skarżyński

- Rok 2004

[Abstrakt] Tematem pracy jest telemetryczny system monitorowania hałasu, opracowany w katedrze Systemów Multimedialnych Politechniki Gdańskiej, przeznaczony do zdalnego monitorowania poziomów hałasu środowiskowego. Oprócz ogólnej charakterystyki systemu zaprezentowano również szereg szczegółów implementacyjnych. Przedstawiono m.in. mobilne urządzenie pomiarowe, oprogramowanie do pomiarów hałasu, dźwiękowy interfejs USB wyposażony...

IT- Enabled Comparison of Environmental Noise Levels and Noise-Evoked Hearing Impairments.

Publikacja

A. Czyżewski
J. Kotus
B. Kostek
K. Kochanek
H. Skarżyński

- Rok 2004

Tematem pracy jest telemetryczny system monitorowania hałasu, opracowany w katedrze Systemów Multimedialnych Politechniki Gdańskiej, przeznaczony do zdalnego monitorowania poziomów hałasu środowiskowego. Oprócz ogólnej charakterystyki systemu zaprezentowano również szereg szczegółów implementacyjnych. Przedstawiono m.in. mobilne urządzenie pomiarowe, oprogramowanie do pomiarów hałasu, dźwiękowy interfejs USB wyposażony w mikrofon...

Comparison of effectiveness of musical sound separation algorithms employing neural networks.

Publikacja

- Rok 2004

Niniejszy referat przedstawia kilka algorytmów służących do separacji dźwięków instrumentów muzycznych. Zaproponowane podejście do dekompozycji miksów dźwiękowych opiera się na założeniu, że wysokość dźwięków w miksie jest znana, tzn. wejściem dla algorytmów jest przebieg zmian wysokości dźwięków składowych miksu. Proces estymacji fazy i amplitudy składowych harmonicznych wykorzystuje dopasowywanie zespolonych przebiegów harmonicznych...

Evaluation of Thermal Stresses in Asphalt Layers in Comparison with TSRST Test Results

Publikacja

- Rok 2012

The paper presents the results of calculations and laboratory determination of thermal stresses at low temperatures. The modified Hills and Brien's method was used to calculate the thermal stresses in asphalt layers of pavements and the results were compared against the values obtained at a laboratory with the Thermal Stress Restrained Specimen Test (TSRST) method. The laboratory investigations were conducted using plain grade...

COMPARISON OF THE ABRASION RESISTANCE OF THE SELECTED BIOMATERIALS FOR FRICTION COMPONENTS IN ORTHOPEDIC ENDOPROSTHESES

Publikacja

- TRIBOLOGIA - Rok 2015

Rosnące z każdym rokiem zapotrzebowanie na endoprotezy stawów ortopedycznych przy jednoczesnym dążeniu do zwiększenia ich trwałości i wyeliminowania negatywnych skutków ubocznych produktów zużycia, które mogą wywoływać proces zapalny w tkankach determinuje potrzebę poszukiwania nowych biomateriałów, bądź metody modyfikacji ich powierzchni. Nadrzędnym celem prowadzonych przez nas badań było oszacowanie intensywności zużycia ściernego...

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Comparison of Customers’ Perception of the Quality of Poland-Turkey Electronic Marketing Solutions

Publikacja

W. Chmielarz
M. Zborowski
M. Atasever
A. Fandrejewska

- Procedia Computer Science - Rok 2020

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A Comparison Study of Strategies for Combining Classifiers from Distributed Data Sources

Publikacja

I. Czarnowski
P. Jȩdrzejowicz

- Rok 2009

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COMPARISON OF INVESTMENT PERFORMANCE MEASURES USING THE EXAMPLE OF SELECTED STOCK EXCHANGES

Publikacja

M. Potrykus

- Nauki o Finansach. Prace Naukowe Uniwersytetu Ekonomicznego we Wrocławiu - Rok 2018

In the following paper, the main objective is to examine whether the selection of the performance measure influences the evaluation of individual investments and the performance rankings generated on that basis. This study presents the values of 16 performance indicators along with their detailed descriptions. All calculations were made using the R program, and the source code can be found at the end of the article. Nine selected...

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Review and comparison of smoothing algorithms for one-dimensional data noise reduction

Publikacja

- Rok 2018

The paper considers the choice of parameters of smoothing algorithms for data denoising. The impact of the window size on smoothing accuracy was analyzed. The parameters of denoising filters were selected with respect to the meansquare error between the computed linear regression and the noisy signal. Finally, we have compared mean, median, SavitzkyGolay, Kalman and Gaussian filter algorithms for the data from the digital sensor....

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Comparison of antimicrobial activity of selected, commercially available wound dressing materials

Publikacja

- Journal of Wound Care - Rok 2018

OBJECTIVE: The aim of our study was to examine the antimicrobial potential of eight selected, commercially available wound dressings containing different antimicrobial agents: silver, chlorhexidine acetate, povidone-iodine, and manuka honey. METHOD: The materials were tested against four reference strains of bacteria: Staphylococcus aureus (PCM 2051), Staphylococcus epidermidis (PCM 2118), Pseudomonas aeruginosa (ATCC 27853),...

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Kinetics of pollutants removal in hybrid treatment wetlands – Case study comparison

Publikacja

M. Gajewska
K. Cur
K. Jóźwiakowski
P. Bugajski

- ECOLOGICAL ENGINEERING - Rok 2018

Recent years have seen an increasing interest in hybrid constructed wetland (HCW) systems for domestic sewage treatment. This paper is focused on kinetics of removal of the main pollutants occurring in wastewater i.e. organics expressed as chemical oxygen demand, biochemical oxygen demand and total nitrogen. The purpose of the article is to compare different HCW configurations in terms of mass removal rates (MRR) and removal rate...

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Comparison of Two Methods for the Determination of Selected Pesticides in Honey and Honeybee Samples

Publikacja

- MOLECULES - Rok 2018

Developed and validated analytical methods for the determination of a wide spectrum of pesticide residues in honey and honeybee samples after the modification of QuEChERS extraction in combination with gas chromatography–tandem quadrupole mass spectrometry (GC-MS/MS) and liquid chromatography–tandem quadrupole mass spectrometry (LC-MS/MS) were discussed and compared. The developed methods were evaluated regarding the utilized equipment...

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The safety issue of roadside advertising – comparison of polish and abu dhabi regulations

Publikacja

- MATEC Web of Conferences - Rok 2017

In Poland a large number of advertisements are located by the roadside. These ads do not support road traffic management and unlike the road marking system are not subject to any regulations. The advertiser’s goal is to communicate a message to as many recipients as possible. Drivers with different individual abilities, such as attention focusing, eye accommodation, speed of information processing, can be distracted, blinded or...

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Trade in value added of countries involved in TTIP: EU-USA comparison

Publikacja

- CESifo Forum - Rok 2017

The aim of this paper is to present key facts concerning trade in the value added of those countries participating in the Transatlantic Trade and Investment Partnership (TTIP). In particular, we describe how involvement in global production networks (GPN) varies across EU countries with respect to the United States.

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Comparison of GC–MS and MEKC methods for caffeine determination in preworkout supplements

Publikacja

E. Waraksa
A. Pokrywka
M. Konop
J. Namieśnik
E. Kłodzińska

- ELECTROPHORESIS - Rok 2019

In this study, GC–MS- and MEKC-based methods for determination of caffeine (CAF) in preworkout supplements were developed and validated. The proposed protocols utilized minimal sample preparation (simple dilution and syringe filtration). The developed methods achieved satisfactory validation parameters, i.e. good linearity (R2 0.9988 and R2 0.9985 for GC–MS- and MEKC-based method, respectively), satisfactory intraand interaccuracy...

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Comparison of physical performances of the ventilation systems in low-energy residential houses.

Publikacja

- ENERGY AND BUILDINGS - Rok 2008

W artykule przedstawiono wyniki doświadczeń pomiaru efektywności różnych systemów wentylacyjnych w energooszczędnych budynkach mieszkalnych na terenie Niemiec. Porównano 4 różne systemy wentylacyjne. Dodatkowo wykonano ankiety wśród mieszkańców na temat opinii o systemach wentylacyjnych.

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Comparison of AHP and Numerical Taxonomy Methods Based on Biogas Plant Location Analysis

Publikacja

- Acta Energetica - Rok 2019

The paper presents a comparison of the multi-criteria Analytic Hierarchy Process (AHP) method and numerical taxonomy in biogas plant location selection. Biogas plants are sources that will significantly contribute to the implementation of the provisions of the energy and climate package for Poland by 2030. Increasing the share of energy produced from renewable sources, e.g. biogas plants, will increase the country’s energy security....

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Comparison of Deep Neural Network Learning Algorithms for Mars Terrain Image Segmentation

Publikacja

- Rok 2024

This paper is dedicated to the topic of terrain recognition on Mars using advanced techniques based on the convolutional neural networks (CNN). The work on the project was conducted based on the set of 18K images collected by the Curiosity, Opportunity and Spirit rovers. The data were later processed by the model operating in a Python environment, utilizing Keras and Tensorflow repositories. The model benefits from the pretrained...

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Comparison of Doppler Effect Estimation Methods for MFSK Transmission in Multipath Hydroacoustic Channel

Publikacja

A. Czapiewska
A. Łuksza
R. Studański
Ł. Wojewódka
A. Żak

- IEEE Access - Rok 2024

Underwater wireless communication remains a challenging topic, particularly for applications such as wreck penetration where multipath and Doppler effects are very intense. These effects are becoming even more difficult to mitigate for fast data transmission systems that utilize wideband signals. Due to the low propagation speed of acoustic wave in the water, there is a significant difference between the Doppler shift for lower...

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Comparison of numerical models of impact force for simulation of earthquake-induced structural pounding

Publikacja

R. Jankowski

- Rok 2008

W artykule przedstawiono porównanie trzech modeli numerycznych służących do symulacji siły zderzenia w czasie kontaktu pomiędzy konstrukcjami budowlanymi podczas trzęsień ziemi. Efektywność każdego z modeli zbadano porównując wyniki analiz numerycznych z wynikami badań eksperymentalnych. Wyniki pracy pokazują, iż nieliniowy model lepkosprężysty najdokładniej symuluje przebieg czasowy siły zderzenia w czasie kontaktu.

Efficiency of Biomass Energy used for Heating Purposes in a Residential Building in Comparison with other Energy Sources

Publikacja

G. Redlarski
J. Wojdalski
A. Kupczyk
J. Piechocki

- TEKA Komisji Motoryzacji i Energetyki Rolnictwa - Rok 2012

This paper discusses the results of analyses investigating the energy efficiency of biomass in comparison with other popular energy carriers used for heating, ventilation and water heating in residential buildings. The compared energy sources were lignite, natural gas, heating oil and electricity produced by conventional and integrated power generation plants. The most efficient variant relying on biomass and the least efficient...

Scale effect in the self-propulsion prediction for Ultra Large Container Ship with contra-rotating propellers

Publikacja

H. Pruszko
M. Reichel
K. Czerski
M. Necel
J. Schmale
S. Brüns

- Rok 2023

This article addresses the problem of the scale effect for an Ultra Large Container Ship (ULCS) with a novel twin-crp-pod propulsion system. Twin-crp-pod steering-propulsion arrangement is an innovative solution that gains from three well-known systems: twin-propeller, contra-rotating propellers and pod propulsors. It is expected that applying the twin-crp-pod system to the analysed Ultra Large Container Ship will increase propulsion...

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A Comparison of STI Measured by Direct and Indirect Methods for Interiors Coupled with Sound Reinforcement Systems

Publikacja

- Rok 2018

This paper presents a comparison of STI (Speech Transmission Index) coefficient measurement results carried out by direct and indirect methods. First, acoustic parameters important in the context of public address and sound reinforcement systems are recalled. A measurement methodology is presented that employs various test signals to determine impulse responses. The process of evaluating sound system performance, signals enabling...

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Comparison of Traffic Flow Models with Real Traffic Data Based on a Quantitative Assessment

Publikacja

- Applied Sciences-Basel - Rok 2021

The fundamental relationship of traffic flow and bivariate relations between speed and flow, speed and density, and flow and density are of great importance in transportation engineering. Fundamental relationship models may be applied to assess and forecast traffic conditions at uninterrupted traffic flow facilities. The objective of the article was to analyze and compare existing models of the fundamental relationship. To that...

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Comparison of the Efficiency of Deammonification under Different DO Concentrations in a Laboratory-Scale Sequencing Batch Reactor

Publikacja

- Water - Rok 2022

The efficiency of deammonification depends on the cooperation of ammonium oxidizing bacteria and archaea (AOB/AOA), anaerobic ammonium oxidizing bacteria (AnAOB) and the effective suppression of nitrite oxidizing bacteria (NOB) that compete with AnAOB for nitrite (NO2 -N). One of the effective NOB suppression strategies is intermittent aeration. However, it is important to have a good understanding of the optimum dissolved oxygen...

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Comparison of strain results at a laser weld notch obtained by numerical calculations and experimental measurements

Publikacja

- AIP Conference Proceedings - Rok 2016

In the development of ship structures applying new materials and it’s purposeful placement play an important role. During the last years, especially in a construction of ro-ro type vessels, the usage of novel sandwich structures in cargo decks is profitable. Steel sandwich panel is an innovative solution which at a todays state of development can be used for the construction of any members not taking part in a global bending of...

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COMPARISON OF THE CONVENTIONAL AND ALTERNATIVE GRANULAR MATERIALS FOR DUAL-MEDIA FILTRATION OF GROUNDWATER: PILOT PLANT TESTING

Publikacja

J. Drewnowski

- Rok 2014

Nowadays, occurrence of abnormal mineral or organic natural (geogenic) compounds concentrations, in ground and infiltration water, but also quite often in surface waters, is now a common problem encountered in Poland, Europe and many other countries throughout the world. The most concern is usually paid on the removal of iron (Fe) and manganese (Mn) as well as anthropogenic compounds (in particular referring to the organic compounds...

A COMPARISON OF THE WIND SPECTRUM ACCORDING TO DIFFERENT METHODS - AN ORIGINAL PROJECT OF A BUILDING ON A CLIFF IN GDYNIA

Publikacja

- International Journal of Applied Mechanics and Engineering - Rok 2015

The article presents numerical simulations of the dynamic wind loads on the structure of a building designed on a cliff in Gdynia. The results obtained from the two methods: Davenport’s and Karman’s are compared. The results allowed a comparison of the two methods, and they provided an answer to the question how a construction, designed in such an unusual condition of a cliff behaves under the influence of the gusting wind. The...

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Spatial Visualization Based on Geodata Fusion Using an Autonomous Unmanned Vessel

Publikacja

M. Wlodarczyk-Sielicka
D. Połap
K. Prokop
K. Połap
A. Stateczny

- Remote Sensing - Rok 2023

The visualization of riverbeds and surface facilities on the banks is crucial for systems that analyze conditions, safety, and changes in this environment. Hence, in this paper, we propose collecting, and processing data from a variety of sensors—sonar, LiDAR, multibeam echosounder (MBES), and camera—to create a visualization for further analysis. For this purpose, we took measurements from sensors installed on an autonomous, unmanned...

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Ontologies vs. Rules — Comparison of Methods of Knowledge Representation Based on the Example of IT Services Management

Publikacja

- Rok 2013

This text provides a brief overview of selected structures aimed at knowledge representation in the form of ontologies based on description logic and aims at comparing them with their counterparts based on the rule-based approach. Due to the limitations on the length of the article, only elements associated with the representation of concepts could be shown, without including roles. The formalisms of the OWL language were used...

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Analysis and Comparison of Safety of Children and Adult Passenger in Car Based on Crash Tests Results

Publikacja

- Key Engineering Materials - Rok 2014

Most important features of the child seat were presented. There was made analysis of selected dynamic loads acting on mannequins heads during a collision. Comparison of loads acting on the kid in a child seat and the other passengers in a car is presented. In analysis of the results particular attention has been paid on the children's secure in a car. The phenomena of collision child's occipital bone with seat backrest was described....

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A BRIEF REVIEW AND COMPARISON OF SELECTED EXPERIMENTAL METHODS FOR MEASURING NATURAL FREQUENCIES OF CIRCULAR SAW BLADES

Publikacja

- DREWNO - Rok 2016

Different methods for the empirical determination of the natural frequencies of circular saw blades are presented. Stationary methods, such as the harmonic and impulse tests, are discussed and the results of related comparison are given. The comparison of the methods revealed their degree of practical usefulness and their accuracy in determining natural frequencies. A combination of specific methods is proposed, which should allow...

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Comparison of High Performance Liquid Chromatography Methods with Different Detectors for Determination of Steroid Hormones in Aqueous Matrices

Publikacja

- ANALYTICAL LETTERS - Rok 2014

This paper presents the development and comparison of procedures for the qualitative and quantitative determination of five estrogenic compounds (17-a-ethynylestradiol, estrone, estradiol, estriol, and progesterone) in drinking water and wastewater samples. Five extraction columns and two disks were tested for their efficiency. The C18 columns were superior on the basis of cost for solid phase extraction of drinking water or sewage....

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Comparison of anti-plane surface waves in strain-gradient materials and materials with surface stresses

Publikacja

V. Eremeev
G. Rosi
S. Naili

- MATHEMATICS AND MECHANICS OF SOLIDS - Rok 2019

Here we discuss the similarities and differences in anti-plane surface wave propagation in an elastic half-space within the framework of the theories of Gurtin–Murdoch surface elasticity and Toupin–Mindlin strain-gradient elasticity. The qualitative behaviour of the dispersion curves and the decay of the obtained solutions are quite similar. On the other hand, we show that the solutions relating to the surface elasticity model...

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Correlation–polarization effects in electron/positron scattering from acetylene: A comparison of computational models

Publikacja

J. Franz
F. Gianturco
K. Baluja
J. Tennyson
R. Carey
R. Montuoro
R. Lucchese
T. Stoecklin
P. Nicholas
T. Gibson

- NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS - Rok 2008

Different computational methods are employed to evaluate elastic (rotationally summed) integral and differential cross sections for low energy (below about 10 eV) positron scattering off gas-phase C2H2 molecules. The computations are carried out at the static and static-plus-polarization levels for describing the interaction forces and the correlation–polarization contributions are found to be an essential component for the correct...

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Comparison of Oxidative Stress/DNA Damage in Semen and Blood of Fertile and Infertile Men

Publikacja

J. Guz
D. Gackowski
M. Foksinski
R. Rozalski
E. Zarakowska
A. Siomek
A. Szpila
M. Kotzbach
R. Kotzbach
R. Olinski

- PLOS ONE - Rok 2013

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Rime samples characterization and comparison using classical and fuzzy principal components analysis

Publikacja

K. Klimaszewska
C. Sarbu
Ż. Polkowska
M. Błaś
M. Sobik
J. Namieśnik

- CENTRAL EUROPEAN JOURNAL OF CHEMISTRY - Rok 2008

Efektywność dwóch nowych algorytmów w stosunku do klasycznego wariantu techniki PCA porównano analizując dane dotyczące zanieczyszczeń próbek sadzi zebranych na terenie trzech stacji w okresie 2004-2007. Zastosowane algorytmy FPCA-1 i FPCA-o pozwalają na wyodrębnienie większej liczby miejsc zbierania próbek i analitów w stosunku do sytuacji, kiedy stosuje się klasyczny wariant techniki PCA.