Wyniki wyszukiwania dla: TEHD ANALYSIS

Ion Chromatography in Environmental Analysis of Selected Organic Acids

Publikacja

- Rok 2012

Low molecular mass carboxylic acids (LCAs) occur in many environmental compartments dueto natural processes and human activity. When volatile and nonvolatile acids are to be monitored then liquidchromatography, including ion chromatography seems a method of choice. At high pH the acids are inionized form and can be separated as carboxylats by means of anion exchange chromatography. LCAs canalso be separated at low pH by ion exclusion...

Numerical analysis of elastic wave propagation in unbounded structures

Publikacja

- FINITE ELEMENTS IN ANALYSIS AND DESIGN - Rok 2014

The main objective of this paper is to show the effectiveness and usefulness of the concept of an absorbing layer with increasing damping (ALID) in numerical investigations of elastic wave propagation in unbounded engineering structures. This has been achieved by the authors by a careful investigation of three different types of structures characterised by gradually increasing geometrical and mathematical description complexities....

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Computer Supported Analysis of the Human Body Surface Area

Publikacja

- International Journal of Innovative Computing Information and Control - Rok 2013

Recent scientific studies show the growing importance of the coefficients: BSA and TBSA, as an alternative to the widely used BMI. The relevant indicators are widely used in medicine, including such areas as: the treatment of burns, chemotherapy, dermatology and toxicology; as benchmarks when calculating doses of drugs and fluids. The particular problems concerning this subject are: the change of the reference parameter value which...

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A novel method of time-frequency analysis: an essential spectrogram

Publikacja

K. Czarnecki

- HYDROACOUSTICS - Rok 2013

A novel precise method of time-frequency analysis is presented. In the algorithm, a new energy distribution is estimated by simultaneously discard or displacement of the classical spec- trogram energy. A channelized instantaneous frequency and a local group delay are used in order to replacement in the same manner as formulated by Kodera et al. [1, 2]. Additionally, new representations: a channelized instantaneous bandwidth and...

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Observation Value Analysis – Integral Part of Bayesian Diagnostics

Publikacja

- Procedia Engineering - Rok 2015

The decision making process, in general, is understood as a process of selecting one of the available solutions to the problem. One of possible approaches supporting the process is Bayesian statistical decision theory providing a mathematical model to make decisions of a technical nature in conditions of uncertainty. Regarding above, a detailed subject of the research is to analyze the value of the observation, which is a part...

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Comparative Analysis of Text Representation Methods Using Classification

Publikacja

J. Szymański

- CYBERNETICS AND SYSTEMS - Rok 2014

In our work, we review and empirically evaluate five different raw methods of text representation that allow automatic processing of Wikipedia articles. The main contribution of the article—evaluation of approaches to text representation for machine learning tasks—indicates that the text representation is fundamental for achieving good categorization results. The analysis of the representation methods creates a baseline that cannot...

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Observation value analysis - integral part of Bayesian diagnostics

Publikacja

- Rok 2015

Detailed subject of the research is to analyse the value of the observation, which is a part of preposterior analysis. For the presented network, the main objective was to determine, conducting of which of three tests is the most valuable from the perspective of determining possible need or possibility to omission expensive technical expertise. The main advantage of preposterior analysis is answering the question which of the considered...

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Numerical analysis of cylindrical shell subjected to explosive load

Publikacja

A. Pestka

- Rok 2015

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Strength analysis of the support structure of the offshore wind turbine

Publikacja

- Rok 2015

The global power demand from renewable sources is growing. One of a very favorable solution which meets severe environmental protection requirements are the offshore wind turbines. The offshore wind energy sector has experienced very fast development over last decade. Offshore wind farms, in comparison with onshore applications, can provide increased efficiency with reduced noise, visual, transportation and installation con-flicts....

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Analysis of transformer state by fuzzy TOPSIS and AHP method

Publikacja

M. Bartłomiejczyk
M. Gutten
S. Hamacek

- Rok 2014

The paper presents mathematical models TOPSIS and AHP methods, which was utilized on insulating state of distribution transformer to analyze and sensibility of individual measurements methods mutual comparison. We can uniquely determine the importance of these measurements methods with this mathematical apparatus in these measurements methods in insulating state of transformers.

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Schematiclab.com – A web tool for the design and analysis of electrical circuits

Publikacja

- Rok 2015

In this paper a useful Internet application for designing electronic systems is considered. A practical process of prototyping electronic devices by using such a dedicated web tool, hereinafter referred to as SchematicLab, is described. This solution, still in constant development, is now ready for use.

Schematiclab.com – A web tool for the design and analysis of electrical circuits

Publikacja

- Rok 2015

Along with a general progress in the modern computational tools, dynamic development of Internet applications using the cloud methodology and solutions is now observed. Clearly, also the applications installed locally, and being commonly used previously, are gradually gaining their counterparts in computational network clouds. The clouds have also brought new service sales opportunities. Namely, the service sales model based on...

ANALYSIS OF THE INCREASE OF CONSTRUCTION COSTS IN URBAN REGENERATION PROJECTS

Publikacja

- Advances in Science and Technology Research Journal - Rok 2015

The subject of this paper is the analysis and evaluation of the reasons for construction costs increases in urban regeneration projects. The analysis considers major refurbishments of real estates’, as well as heavy repair and modernization of the road system. For the period mentioned, the costs from works and expenditure schedules were compared with the costs of additional works, which shows the percentage cost increase in relation...

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Tryton Supercomputer Capabilities for Analysis of Massive Data Streams

Publikacja

- Polish Maritime Research - Rok 2015

The recently deployed supercomputer Tryton, located in the Academic Computer Center of Gdansk University of Technology, provides great means for massive parallel processing. Moreover, the status of the Center as one of the main network nodes in the PIONIER network enables the fast and reliable transfer of data produced by miscellaneous devices scattered in the area of the whole country. The typical examples of such data are streams...

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IT PROJECT TEAMS CREATION AND ANALYSIS IN C2 NIWA ENVIRONMENT

Publikacja

B. Krawczyk-Bryłka

- TASK Quarterly - Rok 2015

Teams are the basic unit of the C2NIWA community, which – using the technical capabilities of this environment – focuses on the implementation of various projects. This article presents one of the competitions carried out within the framework of a C2NIWA project called Uwaga! Upadek! [Attention! Fall!], used as an example of a collaborative project for which analyses related to the assessment of teamwork based on the input-process-result...

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CFD analysis of fluid flow through the labyrinth seal

Publikacja

- Transactions of the Institute of Fluid-Flow Machinery - Rok 2015

Steam and gas turbines are some of the fundamental means of power generation. The energy efficiency of the turbines, however, is not satisfactory. Ever since the start-up of the first turbine in the world, engineers have been striving for their increased efficiency. Multiple solutions to the problem of steam loss in an operating turbine are available. The use of seals is one of them. Empirical methods or numerical calculations...

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Comparative Analysis of Contemporary Regeneration of Waterfronts in Port Cities

Publikacja

P. Lorens

- Rok 2014

The paper includes comparative analysis of the selected waterfront case studies in cities around Europe and North America.

An Analysis of Contextual Aspects of Conceptualization: A Case Study and Prospects

Publikacja

- Rok 2014

In this chapter we present a new approach to development of modularized knowledge bases. We argue that modularization should start from the very beginning of modeling, i.e. from the conceptualization stage. To make this feasible, we propose to exploit a context-oriented, semantic approach to modularization. This approach is based on the Structural Interpretation Model (SIM) presented earlier elsewhere. In the first part of thischapter...

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Efficiency comparison of selected endoscopic video analysis algorithms

Publikacja

J. Cychnerski

- International Journal of Innovative Research in Computer and Communication Engineering - Rok 2014

In the paper, selected image analysis algorithms were examined and compared in the task of identifying informative frames, blurry frames, colorectal cancer and healthy tissue on endoscopic videos. In order to standardize the tests, the algorithms were modified by removing from them parts responsible for the classification, and replacing them with Support Vector Machines and Artificial Neural Networks. The tests were performed in...

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Analysis of the Role of FRMD5 in the Biology of Papillary Thyroid Carcinoma

Publikacja

A. Gaweł
M. Ratajczak
E. Gajda
M. Grzanka
A. Paziewska
M. Cieślicka
M. Kulecka
M. Oczko-Wojciechowska
M. Godlewska

- International Journal of Molecular Sciences - Rok 2021

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Analysis of the Suitability of Selected Data Tranmission Systems in RSMAD

Publikacja

- Communications in Computer and Information Science - Rok 2011

This paper analyses the suitability of the selected radio communication systems currently used for data transmission, or usable in the future, in Radio System for Monitoring and Acquisition of Data from Traffic Enforcement Cameras (in short RSMAD). The paper also presents the advantages and disadvantages of each systems, paying particular attention to features that directly affect the suitability of the solution in the RSMAD system....

Analysis of correlation between heart rate and blood pressure

Publikacja

- Rok 2011

W artykule przedstawiono analizę korelacji pomiędzy częstością akcji serca (HR) i ciśnieniem krwi (BP). Wykorzystano rzeczywiste pomiary ciśnienia skurczowego i rozkurczowego krwi zmierzonego metodą inwazyjną w tętnicy promieniowej. Ze względu na możliwe zaszumienie sygnału przeanalizowano także dane po filtracji filttrem uśredniającycm oraz wykonano analizę trendów sygnałów. Wyniki analizy zarówno danych pomiarowych jak i filtrowanych...

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Analysis of microstructured optical fibers using compact macromodels

Publikacja

- OPTICS EXPRESS - Rok 2011

W niniejszym artykule zaproponowano nową technikę analizy światłowodów fotonicznych. Zaprezentowany algorytm jest kombinacją metody redukcji rzędu modelu oraz techniki dyskretnych rozwinięć funkcyjnych i pozwala w znaczącym stopniu zmniejszyć liczbę zmiennych (nawet do 85%), redukując (nawet 16 krotnie) czas symulacji.

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Polarization sensitive optical coherence tomography with spectroscopic analysis

Publikacja

- ACTA PHYSICA POLONICA A - Rok 2011

Optyczna tomografia koherentna (OCT) jest nieinwazyjną, nieniszczącą i bezkontaktową metodą obrazowania wewnętrznej struktury obiektów i materiałów rozpraszających. Dodatkowo w połączeniu z analizą stanu polaryzacji metoda ta umożliwia badanie lokalnych zmian optycznej anizotropii występującej w badanym obiekcie. W artykule przedstawiono zalety oraz ograniczenia metody oraz przedstawiono propozycję rozszerzenia analizy o badanie...

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Spectroscopic analysis for polarization sensitive optical coherent tomography

Publikacja

- Photonics Letters of Poland - Rok 2011

W artykule przedstawiono właściwości oraz ograniczenia optycznej tomografii koherentnej z analizą stanu polaryzacji promieniowania optycznego. Zaproponowano nową spektroskopową metodę analizy sygnału pomiarowego w PS-OCT oraz przedstawiono i omówiono zalety nowego rozwiązania na bazie uzyskanych wyników pomiarowych.

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The analysis of hydrodynamic forces and shape of towrope for an underwater vehicle

Publikacja

J. Bielański

- Polish Maritime Research - Rok 2007

Opisano metodę obliczania sił hydrodynamicznych oraz kształtu liny holującej pojazd podwodny pod wpływem sił indukowanych przez opływ wody wokół liny i pojazdu. Siły indukowane na linie obliczane są za pomocą równania Morison'a, natomiast siły i momenty na kadłubie pojazdu za pomocą współczynników sił hydrodynamicznych, zależnych od kątów natarcia i prękości holowania pojazdu. Przykłady obliczeń dla pojazdu podwodnego zostały wykonane...

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Two-dimensional vertical analysis of dam-break flow

Publikacja

P. Zima

- TASK Quarterly - Rok 2007

W artykule przedstawiono matematyczne modelowanie przepływów ze swobodną powierzchnią w kanałach otwartych. Do symulacji przepływu użyto dwuwymiarowy pionowy model RANS. Wchodzące w skład modelu równania Naviera-Stokesa rozwiązano stosując algorytm SIMPLE dla metody różnic skończonych. Do śledzenia zmian swobodnego zwierciadła wody zastosowano metodę MAC. Analizie poddano szybkozmienny przepływ po poziomym, gładkim dnie wywołany...

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