Wyniki wyszukiwania dla: AUDIO QUALITY ASSESSMENT

Przedstawiono problemy związane z określaniem bezpieczeństwa funkcjonalnego systemów przemysłowych, w oparciu o standard IEC 61508. Wykorzystując informacje zawarte w cytowanym standardzie opisujemy metody określenia wymaganych poziomów zabezpieczeń dla instalacji przemysłowej. Wyjaśniamy znaczenie poziomów SIL. Poddano dyskusji procedurę poprawnego określania poziomów bezpieczeństwa systemów składających się z elementów o...

An approach to fatigue assessment of metals under biharmonic loading.

Publikacja

J. Kolenda

- Rok 2004

Rozpatrywane są kryteria nieograniczonej i ograniczonej trwałości zmęczeniowej metalicznych elementów poddanych biharmonicznemu naprężeniu, którego jedna składowa ma niską częstość. Założono, że składowa ta może być traktowana jako wolno zmieniające się w czasie naprężenie średnie. Kryteria zmęczeniowe sformułowano za pomocą równań Goodmana i Soderberga. Dyskutowane są wyniki przykładowych obliczeń.

Numerical assessment of the fatigue crack propagation in ship structuraldetails.

Publikacja

J. Kozak

- Rok 2002

Przedstawiono podejście teoretyczne pozwalające na modelowanie rozwoju pęknięcia w konstrukcji kadłuba okrętu. Omówiono założenia i procedurę realizacyjną. Pokazano wyniki badań rzeczywistych modeli konstrukcji kadłuba-skrzyżowanie wiązań ramowych o jednakowej wysokości. Dokonano porównania i krytycznej analizy wyników uzyskanych na drodze teoretycznej z wynikami badań rzeczywistych.

The Application of Cluster Analysis in the Assessment of the Weldability of Unalloyed Steels

Publikacja

- Biuletyn Instytutu Spawalnictwa w Gliwicach - Rok 2023

Non-alloy steels constitute a large group of steels characterised by diversified chemical composition, structural morphology and a wide range of mechanical properties (determining weldability). The paper presents results of multidimensional analyses (based on cluster analysis) of 110 selected unalloyed steel grades. Properties adopted as diagnostic features included the chemical composition, mechanical properties (yield point)...

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THE ASSESSMENT OF THE SITUATION IN BANKING SECTORS IN SELECTED EUROPEAN COUNTRIES

Publikacja

K. Kubiszewska

- EKONOMIA I PRAWO - Rok 2016

The economic significance of the banking sector is well recognized in the theory and practice. In the literature there are discussed various topics concerning banking: banking sectors stability and its determinants, as well as influence of the banking sector on other sectors of the economy. Moreover the situation in the banking sector has been studied from different perspectives: its stability, profitability, efficiency, competition,...

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Separability Assessment of Selected Types of Vehicle-Associated Noise

Publikacja

- Advances in Intelligent Systems and Computing - Rok 2016

Music Information Retrieval (MIR) area as well as development of speech and environmental information recognition techniques brought various tools in-tended for recognizing low-level features of acoustic signals based on a set of calculated parameters. In this study, the MIRtoolbox MATLAB tool, designed for music parameter extraction, is used to obtain a vector of parameters to check whether they are suitable for separation of...

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ASSESSMENT OF CLIFF STABILITY AFTER THE DEMOLITION OF THE ENGINEERING FACILITIES

Publikacja

- Rok 2014

As a part of an experiment, cliff in Gdynia Redlowo (southern coast of Baltic Sea, Gdansk Bay) was measured using terrestrial laser scanner. The main reason for taking up the subject of the Orlowo Cliff’s stability was a decision about controlled removal one of the war fortification elements. The main purpose of that analysis was to specify suitability of laser scanning in determination of slope’s stability after a violent event....

Ordinal pattern statistics for the assessment of heart rate variability

Publikacja

G. Graff
B. Graff
A. Kaczkowska
D. Makowiec
J. Amigó
J. Piskorski
P. Guzik

- The European Physical Journal-Special Topics - Rok 2013

The recognition of all main features of a healthy heart rhythm (the so-called sinus rhythm) is still one of the biggest challenges in contemporary cardiology. Recently the interesting physiological phenomenon of heart rate asymmetry has been observed. This phenomenon is related to unbalanced contributions of heart rate decelerations and accelerations to heart rate variability. In this paper we apply methods based on the concept...

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Quantitative Assessment of Operation of Ship Main Diesel Engine

Publikacja

J. Rudnicki

- Rok 2011

Operation of ship propulsion system is associated with realization of definite operational goals. If to elements of the system the operational reliability strategy could be applied, the situation would be very simple as existing conditions would unambiguously determine application of means being on hand. However decision to reject application of the strategy (even if hypothetical) becomes obvious with a view of necessity of ensuring...

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Probabilistic Methods in Reliability Assessment of Engineering Lightweight Structures

Publikacja

K. Winkelmann

- Rok 2018

The paper considers the probability-based analysis of structural safety measures. Two different numerical examples of representative lightweight structures are considered – a submerged truss tower supporting an offshore platform, and an overhead power line support truss tower. On the basis of these examples, the importance of a motivated selection of analysis method and a proper choice of the number of important variables is shown....

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Identification, Assessment and Automated Classification of Requirements Engineering Techniques

Publikacja

- Rok 2019

Selection of suitable techniques to be used in requirements engineering or business analysis activities is not easy, especially considering the large number of new proposals that emerged in recent years. This paper provides a summary of techniques recommended by major sources recognized by the industry. A universal attribute structure for the description of techniques is proposed and used to describe 33 techniques most frequently...

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Quality Control of Bacterial Extracellular Vesicles with Total Protein Content Assay, Nanoparticles Tracking Analysis, and Capillary Electrophoresis

Publikacja

A. Steć
J. Jońca
K. Waleron
M. Waleron
A. Płoska
L. Kalinowski
B. Wielgomas
S. Dziomba

- INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES - Rok 2022

Extracellular vesicles (EVs) were isolated from Pectobacterium zantedeschiae culturing media using direct ultracentrifugation (UC), iodixanol cushion ultracentrifugation (ICUC), and iodixanol density gradient ultracentrifugation (IDGUC) techniques. The isolates were characterized with total protein content assay (bicinchoninic acid assay, BCA), nanoparticles tracking analysis (NTA), and capillary electrophoresis (CE). A satisfactory...

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Accuracy improvement of the prestressed concrete structures precise geometry assessment by use of bubble micro-sampling algorithm

Publikacja

- Rok 2016

Prestressed concrete structures are well-known technology for a vast period, but nevertheless, this very technology is a leading solution, currently used in construction industry. Prestressed concrete structures have a huge advantage over conventional methods because it uses the properties of concrete in a very efficient way. The main idea behind this technology is to introduce into the cross-section of the structure, the internal...

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Multifactor consciousness level assessment of participants with acquired brain injuries employing human–computer interfaces

Publikacja

- Biomedical Engineering Online - Rok 2020

Background A lack of communication with people suffering from acquired brain injuries may lead to drawing erroneous conclusions regarding the diagnosis or therapy of patients. Information technology and neuroscience make it possible to enhance the diagnostic and rehabilitation process of patients with traumatic brain injury or post-hypoxia. In this paper, we present a new method for evaluation possibility of communication and the...

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Conversion of waste biomass into activated carbon and evaluation of environmental consequences using life cycle assessment

Publikacja

M. Amin
H. H. Shah
A. Iqbal
M. Krawczuk
U. Z. R. Faroogi
A. Zia

- Applied Sciences-Basel - Rok 2022

In this article, activated carbon was produced from Lantana camara and olive trees by H3PO4 chemical activation. The prepared activated carbons were analyzed by characterizations such as scanning electron microscopy, energy-dispersive X-ray spectroscopy, Brunauer–Emmett–Teller, X-ray diffraction, thermogravimetric analysis, and Fourier transform infrared spectroscopy. H3PO4 is used as an activator agent to create an abundant pore...

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The Influence of Stretch Rod Speed on the Relationship between Preblown Bottle Aesthetic Quality and Final Blown Bottle Thickness Profile in Stretch Blow Molding from Preform Process

Publikacja

P. Wawrzyniak

- Applied Mechanics and Materials - Rok 2015

From a mechanical point of view, the aesthetic quality of preblown PET bottles and thickness profile of final blown PET bottles manufactured in ISBM process are determined by mechanical and thermal response of blown preforms. From the microscopic point of view the biggest influence on the mechanical and thermal properties of PET bottles have orientation and crystallization processes. From a technological point of view, the aesthetic...

Accuracy of Pretreatment Ultrasonography Assessment of Intra-Abdominal Spread in Epithelial Ovarian Cancer: A Prospective Study

Publikacja

A. Tomasińska
M. Stukan
M. Badocha
A. Myszewska

- Diagnostics - Rok 2021

The aim of this study was to test the accuracy of ultrasonography performed by gynecological oncologists for the preoperative assessment of epithelial ovarian cancer (EOC) spread in the pelvis and abdominal cavity. A prospective, observational cohort study was performed at a single tertiary cancer care unit. Patients with suspected EOC were recruited and underwent comprehensive transvaginal and abdominal ultrasonography performed...

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Environmental impacts of food waste management technologies: A critical review of life cycle assessment (LCA) studies

Publikacja

F. Batool
T. A. Kurniawan
A. Mohyuddin
M. H. D. Othman
F. Aziz
H. Al-Hazmi
H. H. Goh
A. Anouzla

- TRENDS IN FOOD SCIENCE & TECHNOLOGY - Rok 2024

Food waste is a serious global problem. Therefore, it is essential to reduce food waste and adopt recycling strategies to minimize its environmental impacts. However, conventional waste disposal methods emit harmful gases such as dioxin, CH4, N2O, and NH3, which contaminate the air and water resources. This work reviews the environmental consequences of food waste based on lifecycle assessment (LCA) techniques using methods such...

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Impact Assessment of Electric Vehicles Integration and Optimal Charging Schemes Under Uncertainty: A Case Study of Qatar

Publikacja

S. Deshmukh
H. Tariq
M. Amir
A. Iqbal
M. Marzband
A. M. A. B. Al-Wahedi

- IEEE Access - Rok 2024

The integration of electric vehicles (EVs) is rapidly growing compared to conventional vehicles in Qatar. To assess how these electric vehicles will impact Qatar’s distribution network, it is necessary to accurately model EV loads. However, EV loads exhibit uncertainties due to driving behaviour in charging time, state of charge (SOC), number of trips, and distance travelled. This necessitates the development of a probabilistic...

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Comparison of the Measurement Techniques Employed for Evaluation of Ambient Air Odour Quality Influenced by Operation of Industrial Sewage Treatment Plant

Publikacja

- CHEMICAL ENGINEERING TRANSACTIONS - Rok 2016

The paper presents the results of investigation on ambient air quality evaluation with respect to concentration of odorants in a vicinity of a sewage treatment plant of the LOTOS Group S.A. petroleum plant. The investigation was performed during winter season using a prototype of electronic nose and the Nasal Ranger field olfactometers. The prototype was equipped with a set of six semiconductor sensors by FIGARO Co. and one PID-type...

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ARTIFICIAL MODEL IN THE ASSESSMENT OF THE ALGORITHM OF OBJECTS RECORDED BY LASER SCANNING SHAPE DETECTION (ALS/TLS)

Publikacja

- Rok 2015

Brief description of the study and used methods. Brief description of the study and used As part of the preparatory work aimed to create the application solution allowing for the automation of searching objects in data, obtained in the scanning process using ALS (Airborne Laser Scanning) or TLS (Terrestrial Laser Scanning), the authors prepared a artificial (synthetic, theoretical) model of space, used for the verification of operation...

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Jakość powietrza wewnętrznego - lotne związki organiczne jako wskaźnik jakości powietrza wewnętrznego = Indoor air quality - volatile organic compounds as an indicator of the quality of indoor air

Publikacja

B. Zabiegała

- Rok 2009

Pomieszczenia zamknięte z jednej strony są barierą chroniącą przed negatywnymi czynnikami środowiska, zmiennymi warunkami pogodowymi - deszczem, wiatrem, niską lub wysoką temperaturą, z drugiej jednak strony - w zamkniętych wnętrzach nastepuje często kumulacja toksycznych związków organicznych i nieorganicznych, co nie pozostaje bez wpływu na ludzkie zdrowie.Głównym celem badań jest oszacowanie jakości powietrza wewnętrznego pod...

Insights into modification of lignocellulosic fillers with isophorone diisocyanate: structure, thermal stability and volatile organic compounds emission assessment

Publikacja

A. Hejna
M. Marć
K. Skórczewska
J. Szulc
J. Korol
K. Formela

- European Journal of Wood and Wood Products (HOLZ ALS ROH-UND WERKSTOFF) - Rok 2021

This study presents an analysis of the structure and properties of different types of lignocellulosic fillers modified by isophorone diisocyanate (IPDI) to provide insights into the possibility of their application to the manufacturing of wood polymer composites (WPCs). Moreover, it deals with the environmental aspects of modified fillers, by assessment of volatile organic compounds (VOCs) emitted during modification, as well as...

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Multivariate Statistical Analysis for Mutual Dependence Assessment of Selected Polyphenols, Organic Acids and Metals in Cool-Climate Wines

Publikacja

M. Fabjanowicz
V. Simeonov
M. Frankowski
W. Wojnowski
J. Płotka-Wasylka

- MOLECULES - Rok 2022

Polyphenols, organic acids and metal ions are an important group of compounds that affect the human health and quality of food and beverage products, including wines. It is known that a specific correlation between these groups exist. While wines coming from the New World and the Old World countries are extensively studied, wines coming from cool-climate countries are rarely discussed in the literature. One of the goals of this...

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Modelling the impact of the agricultural holdings and land-use structure on the quality of inland and coastal waters with an innovative and interdisciplinary toolkit

Publikacja

L. A. Dzierzbicka-Glowacka
D. Dybowski
M. Janecki
E. Wojciechowska
B. Szymczycha
D. Potrykus
A. Nowicki
A. Szymkiewicz
P. Zima
B. Jaworska-Szulc... i 9 innych

- AGRICULTURAL WATER MANAGEMENT - Rok 2022

The changes taking place in the marine coastal zones are extremely important, as about 40% of the human population currently lives in the coastal areas (within 100 kilometres of the coastline) increasing anthropogenic pressure on the marine ecosystems. Agriculture is a significant source of nutrients to the marine environment that increase hypoxia, eutrophication and may pose a threat to the services provided by ecosystems. In...

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Selected nutrients determining the quality of different cuts of organic and conventional pork

Publikacja

K. Wójciak
M. Halagarda
. Sascha
P. Kęska
A. Latoch
J. Stadnik

- EUROPEAN FOOD RESEARCH AND TECHNOLOGY - Rok 2021

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Diagnostics of high-voltage varistor quality using resonant ultrasound spectroscopy

Publikacja

- Rok 2008

Resonant spectroscopy is an effective nondestructive testing method focused on defects detection in tested objects. Resonance spectrum contains an information about the mechanical properties and particularly about the structural homogeneity of the whole object. A swept frequency method has been used to measure the selected resonant frequencies range. The system for measurement of resonant ultrasound spectroscopy of high-voltage...

Sawing frozen wood with narrow kerf saws: Energy and quality effects.

Publikacja

K. Orłowski
J. Sandak
M. Negri
L. Dzurenda

- FOREST PRODUCTS JOURNAL - Rok 2009

Opór skrawania zależy podczas przecinania nie tylko od wilgotności drewna lecz również od jego temperatury. W pracy przedstawiono wyniki badań eksperymentalnych przecinania drewna sosnowego zmrożonego na pilarce ramowej wielopiłowej. Dla porównania wykonano również testy dla drewna o temperaturze pokojowej. Czynnikami badanymi były: moc skrawania, dokładność przecinania w postaci grubości elementów, a także chropowatość powierzchni....

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Economic growth, structural change and quality upgrading in New Member States

Publikacja

A. Parteka

- Rok 2009

The purpose of this research is to present the recent developments concerning structural change and productivity growth in New Member States and the role played in such process by country specific factors. We focus on ten countries (NMS-10) which joined the EU in 2004 and analyze productivity dynamics of their labor structures between the years 1995 and 2005 in a comparative setting versus EU-15 economies. NMS-10 have gone through...

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Passive sampling as a tool for obtaining reliable analyticalinformation in environmental quality monitoring

Publikacja

- ANALYTICAL AND BIOANALYTICAL CHEMISTRY - Rok 2010

Spośród technik pobierania próbek analitów technika dozymetrii pasywnej wydaje się być interesującą alternatywą w stosunku do powszechnie stosowanych technik dynamicznych. Dozymetria pasywna łączy w sobie etap pobierania próbki z etapem izolacji i wzbogacania analitów, które są zatrzymywane w odpowiednim medium zatrzymującym. Prowadzi to do znacznego uproszczenia operacji analitycznych wykonywanych in situ. W odróżnieniu od aktywnych...

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Determinants of primary healthcare patients’ dissatisfaction with the quality of provided medical services

Publikacja

A. Strzelecka
M. Stachura
T. Wójcik
M. Kordyzon
J. Chmielewski
M. Florek-Łuszczki
G. Nowak-Starz

- Annals of Agricultural and Environmental Medicine - Rok 2021

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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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Polymer based thick films - material quality and interface resistance evaluation

Publikacja

V. Sedlakova
J. Sikula
L. Spiralski

- Rok 2006

The properties of polymer based thick film layers mede using different resistive pastes and dipping silvers have been studied. The composite of carbon and graphite (C/Gr) conducting particles suspended in different polymer vehicles were used for preparation resistive layers. Interface resistance Rc created between dipping silver (DiAg) contact layer and resistive layer was determined from the surface potential distribution measurements...

Quality of service games in an IEEE 802.11 ad hoc wireless LAN

Publikacja

J. Konorski

- Rok 2006

W pracy wykazano, że gdy wymaganie na minimalną przepływnośc stacji przekracza wielkość wyznaczoną przez punkt optimum w sensie Pareto, okazjonalna egoistyczna konfiguracja MAC pozwala stacjom uczestniczyć w grze typu kolejkowego, w której wypłatą jest uzyskana przepływność. Zaprezentowano przykładowe scenariusze takiej gry oraz dokonano jej analizy przy pomocy modelu gry stochastycznej, wykazując istnienie punktu równowagi oraz...

Simulation of electric hearing - influence of simulation parameters on quality of output signal

Publikacja

A. Walkowiak
B. Kostek
A. Lorens
A. Czyżewski
A. Obrycka
A. Wąsowski

- Rok 2006

W środowisku programistycznym Matlab stworzono symulację słuchu elektrycznego pacjenta implantowanego. W symulacji zastosowano algorytm przetwarzania wykorzystywany w komercyjnych systemach implantów ślimakowych - CIS (Continuous Interleaved Sampling). W pracy zbadano wpływ ilości kanałów, jak i innych parametrów sygnałów wyjściowych przy zastosowaniu sygału mowy jako sygnału wejściowego symulacji.

Metrological analysis of surface quality aspects in minimum quantity cooling lubrication

Publikacja

R. Maruda
S. Wojciechowski
N. Szczotkarz
S. Legutko
M. Mia
M. Gupta
P. Nieslony
G. Krolczyk

- Measurement - Rok 2021

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Quality and environmental management systems in polish shipbuilding industry - methods of implementation

Publikacja

- POLISH JOURNAL OF ENVIRONMENTAL STUDIES - Rok 2007

W pracy przedstawiono metodę wdrażania systemu zarządzania jakością i środowiskiem, którą wykorzystano przy realizacji projektu BALTECOLOGICALSHIP. Metoda oparta była o wzory i doświadczenia szwedzkie. Rezultatem było wykonanie przeglądu środowiskowego w 50 organizacjach z obszaru przemysłu stoczniowego oraz wdrożenie w 13 firmach systemu zarządzania jakością i środowiskiem. Praca zawiera również wskazanie barier we wdrażaniu obu...