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Wyniki wyszukiwania dla: PLANT-WIDE MODEL
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Three-dimensional conceptual model for service-oriented simulation
Publikacjan this letter, we propose a novel three-dimensional conceptual model for an emerging service-oriented simulation paradigm. The model can be used as a guideline or an analytic means to find the potential and possible future directions of the current simulation frameworks. In particular, the model inspects the crossover between the disciplines of modeling and simulation, service-orientation, and software/systems engineering. Finally,...
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How to apply the probabilistic model of measurement processes successfully
PublikacjaApplicational aspects of probabilistic model of measurement processes, proposed by G.B. Rossi, are considered. The main idea of the model - using of Bayes-Laplace postulate for solution of inverse probability problem, is substituted by Fisher's concept of the likelihood function, expressed in the data translated format. This approach gives a clear-sighted solution of inverse probability. Some recommendations for application of...
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A Numerical Model Study on Ice Boom in a Coastal Lake
PublikacjaA numerical study on the effectiveness of the proposed ice boom to be installed near the entrance of Lake Notoro, Hokkaido, Japan to prevent sea ice moving into the lake is presented. A two-dimensional hydro–ice dynamics model was modified to allow for the treatment of ice-boom interaction with the effect of tidal current. The numerical model is a coupled hydrodynamic and ice dynamic model. The ice dynamic component uses a Lagrangian...
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Practical Use of Generic IT Organization Evolution Model
PublikacjaIn the paper we analyze, basing on the practical experiences, how the Generic IT Organization Model could be used to describe evolution of real-world IT support organization in relation to IT Service Management area.
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Application of MARKAL model to optimisation of electricity generation structure in Poland in the long-term time horizon. Part II. Model and forecasts assumptions
PublikacjaIn this paper, the next in a series of publications on the subject, assumptions are presented of a power system development model in terms of electricity generation technology infrastructure in Poland, in the long term perspective until 2060. The model is based on the mathematical structure of the MARKAL optimization package. Among other things developed are a forecast of the final demand for electricity and heat, the current...
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A Subspace-Splitting Moment-Matching Model-Order Reduction Technique for Fast Wideband FEM Simulations of Microwave Structures
PublikacjaThis article describes a novel model-order reduction (MOR) approach for efficient wide frequency band finite-element method (FEM) simulations of microwave components. It relies on the splitting of the system transfer function into two components: a singular one that accounts for the in-band system poles and a regular part that has no in-band poles. In order to perform this splitting during the reduction process, the projection...
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Model oceny dojrzałości przedsiębiorstw do zastosowania zwinnych metodyk zarządzania projektami IT
PublikacjaDysertacja koncentruje się na budowie modelu, który ocenia gotowość przedsiębiorstw do wdrożenia zwinnych metodyk zarządzania projektami IT. Analizuje istniejące metody oceny dojrzałości projektowej i wprowadza własny model, biorąc pod uwagę krytyczne czynniki sukcesu i skuteczność zwinnych metod. Rozprawa zawiera badania literaturowe, empiryczne studium przypadku oraz weryfikację i rekomendacje modelu, dostarczając wglądu w praktyczne...
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In Situ Verification of Numerical Model of Water Hammer in Slurries
PublikacjaThis paper presents a numerical model of transient flow in a pressure slurry pipeline network with verification based on in situ measurements. The model, primarily verified in laboratory conditions, has been extended and applied to the case of a large and complex slurry pipeline network in Poland. In the model, the equivalent density concept was applied. In situ experiments were performed for various unsteady flow episodes, caused by...
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Development and validation of lumbar spine finite element model
PublikacjaThe functional biomechanics of the lumbar spine have been better understood by finite element method (FEM) simulations. However, there are still areas where the behavior of soft tissues can be better modeled or described in a different way. The purpose of this research is to develop and validate a lumbar spine section intended for biomechanical research. A FE model of the 50th percentile adult male (AM) Total Human Model for Safety...
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A concept of heterogeneous numerical model of concrete for GPR simulations
PublikacjaThe Ground Penetrating Radar (GPR) method, which is increasingly being used in the non-destructive diagnostics of reinforced concrete structures, often needs more accurate interpretation tools for analysis of experimental data. Recently, there has been growing interest in developing of various numerical models for exhaustive understanding of GPR data. This paper presents the concept of a heterogeneous numerical model of concrete,...
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Dipolowy model pola elektrycznego okrętu
PublikacjaOkręt o kadłubie stalowym będący w wodzie morskiej wytwarza wokół siebie pole elektryczne. Źródłem tego pola są procesy elektrochemiczne i ochrona katodowa okrętu. Analiza pola elektrycznego wokół okrętu jest istotna z punktu widzenia identyfikacji oraz ochrony przeciwminowej. W pracy przedstawiono uproszczony model dipolowy pola magnetycznego okrętu, który pozwala na obliczenie rozkładu pola elektrycznego w tzw. strefie dalekiej...
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Spike patterns and chaos in a map-based neuron model
PublikacjaThe work studies the well-known map-based model of neuronal dynamics introduced in 2007 by Courbage, Nekorkin and Vdovin, important due to various medical applications. We also review and extend some of the existing results concerning β-transformations and (expanding) Lorenz mappings. Then we apply them for deducing important properties of spike-trains generated by the CNV model and explain their implications for neuron behaviour....
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Determination of Mathematical Model Parameters of a Medium Frequency Transformer
PublikacjaThe paper presents the results of experimental studies of the medium frequency transformer. The object of the research was a prototype of a single-phase transformer with a core made of ferrite I-core elements and windings made of Litz conductors. The research was carried out to determine the parameters of the transformer's mathematical model. The scope of the tests included determining the magnetic hysteresis loop and measuring...
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Bicycle Traffic Model for Sustainable Urban Mobility Planning
PublikacjaModelling tools and transport models are required to assess the impact of measures for the effective planning of cycling routes in cities. This paper presents the methodology for developing a four-stage macroscopic model of bicycle traffic for the city of Gdynia, and its use in planning new bicycle routes, considering a modal shift. The model presented in this paper allows for the evaluation of the influence of the characteristics...
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Long-term measurements from a photovoltaic power plant and meteorological stations at the Laboratory LINTE^2 of Gdańsk University of Technology
Dane Badawcze1) The Laboratory LINTE^2 is a large research infrastructure operated by the Faculty of Electrical and Control Engineering at Gdańsk University of Technology, to be found in Gdańsk, Poland (54.3690 N, 18.6130 E). 2) The measurements have been collected from a photovoltaic power plant located on the roof of the laboratory, having total capacity...
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Evaluating Pornography Problems Due to Moral Incongruence Model
PublikacjaIntroduction To date, multiple models of problematic pornography use have been proposed, but attempts to validate them have been scarce. Aim In our study, we aimed to evaluate the Pornography Problems due to Moral Incongruence model proposing that self-appraisals of pornography addiction stem from (i) general dysregulation, (ii) habits of use, and (iii) moral incongruence between internalized norms and behavior. We investigated...
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Impedance spectra of RC model as a result of testing pulse excitation measurement method
Dane BadawczeThe impedance spectrum of RC model object obtained using pulse excitation EIS impedance spectrosocpy measurement method. The 1V voltage pulse excitation duration was set to 0.1s and the total acqusition time was set to 1000s. The object under test was built using RC components connected as Baunier model of anticorrosion coating with the following components...
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A hyperelastic model for soils with stress-induced and inherent anisotropy
PublikacjaIn this paper, modelling of the superposition of stress-induced and inherent anisotropy of soil small strain stiffness is8presented in the framework of hyperelasticity. A simple hyperelastic model, capable of reproducing variable stress-induced9anisotropy of stiffness, is extended by replacement of the stress invariant with mixed stress–microstructure invariant to10introduce constant inherent cross-anisotropic component. A convenient...
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Model hybrydowy układu wielowirnikowego z przekładnią
PublikacjaW pracy przedstawiono metodę redukcji modelu układu wielowirnikowego z przekładnią, w którym uwzględniono zmienną prędkość kątową wirników, oddziaływania żyroskopowe, nieproporcjonalne tłumienie oraz nieliniowość podatności zazębienia. Zaproponowano hybrydową metodę modelowania, w której zastosowano: dekompozycję modalną oraz dyskretyzację przestrzenną. Zredukowany model modalny zbudowano dla części rozważanego układu, w której...
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Towards a Universal Model of Engineering Change Management
PublikacjaThe paper deals with the issue of engineering change management (ECM). ECM has received much less attention in the literature than general change management. Moreover, due to their specifics (complexity and multifaceted nature), hitherto developed ECM models are difficult to implement in companies. The paper aims to develop a simplified, universal, and hence easily applicable model of ECM. We based our assumptions on a case study...
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Depolarisation Model for a BAN Indoor Scenario
PublikacjaIn this paper, an analysis of depolarisation in Body Area Networks for Body-to-Infrastructure communications based on a measurement campaign in the 5.8 GHz band in an indoor environment is performed. Measurements were made with an offbody antenna transmitting linearly polarised signals and dualpolarised receiving antennas carried by the user on the body. A Normal Distribution with a mean of 2.0 dB and a standard deviation of 4.3...
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Periodic and chaotic dynamics in a map‐based neuron model
PublikacjaMap-based neuron models are an important tool in modeling neural dynamics and sometimes can be considered as an alternative to usually computationally costlier models based on continuous or hybrid dynamical systems. However, due to their discrete nature, rigorous mathematical analysis might be challenging. We study a discrete model of neuronal dynamics introduced by Chialvo in 1995. In particular, we show that its reduced one-dimensional...
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CRVG - a new model for wireless networks topology generation
PublikacjaThis paper presents a new model of wireless network topology generator. Its main advantage is the possibility of relatively sparse networks generation. Because no iteration is needed, the model can be used for massive generation of networks for testing. The topological properties of produced graphs place them in the class of scale free networks, resembling real ones.
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BMC PLANT BIOLOGY
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PLANT AND CELL PHYSIOLOGY
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TRENDS IN PLANT SCIENCE
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Poczucie samoskuteczności a nadmierne zaangażowanie w działaniach przedsiębiorców: Model teoretyczny
PublikacjaArtykuł przedstawia model teoretyczny wyjaśniający wpływ poczucia samoskuteczności na eskalację zaangażowania wśród przedsiębiorców. Autorzy postulują, że rozbieżność pomiędzy poziomem przekonań dotyczących własnej skuteczności a faktyczną skutecznością tworzy lukę skuteczności. Początkujący przedsiębiorcy w związku z ich niewielkim doświadczniem są szczególnie narażeni na ryzyko eskalacji zaangażowania, gdyż cechują się ograniczonymi...
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St. Adalberd church 3D point model
Dane BadawczeResearch data show the church of St. Adalbert in Gdansk, Poland. Two layers are presented in the .zip file: one represents the laser scanning result, the second represents the point cloud from 36 photogrammetry images from the UAV system. The aligned point clouds formed the basis to create the high-resolution 3D model. Reference data are laser scanning...
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ANALYSIS OF THE p53 PROTEIN GENE EXPRESSION MODEL
PublikacjaWe study the asymptotic behaviour of the solutions of the p53-Mdm2 model proposed by Monk (2003). The p53 gene is crucial for cellular inhibition of the angiogenesis process, while Mdm2 is a negative regulator of the p53 tumor-suppressor. We investigate the stability of the positive steady state and perform some numerical experiments.
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Nieliniowy dynamiczny model instalacji katalitycznego odtleniania wody
PublikacjaInstalacja katalitycznego odtleniania wody służy do redukcji stężenia tlenu rozpuszczonego w wodzie zasilającej obieg ciepłowniczy. W artykule opisano przykładową instalację tego rodzaju. Analiza procesów w niej zachodzących pozwoliła zaproponować metodykę budowy i strukturę modelu. Ze względu na różne skale czasowe dynamiki procesów zachodzących w instalacji i jej poszczególnych elementach, zaproponowano model w części statyczny,...
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Mathemathical model of radial passive magnetic bearing
PublikacjaIn the article mathematical radial model of passive magnetic bearings to ocean engineering units has been presented. The units application in underwater thrusters should increase propulsion systems durability and gives lower maintenance costs. The rotor of electric motor is hanging in magnetic field taken from radial passive magnetic bearings. However axial direction maintenance must be controlled with electromagnets and their...
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Model finansowania samorządu terytorialnego w Polsce
PublikacjaCelem artykułu jest określenie – na podstawie danych empirycznych – istniejącego w Polsce modelu finansowania samorządu terytorialnego. Przed jego identyfikacją scharakteryzowano od strony teoretycznej istniejące modele, nawiązując jednocześnie do jednego z podziałów systemu samorządu terytorialnego. Następnie opisano najważniejsze własności modelu zdecentralizowanego, mieszanego i scentralizowanego. W badaniach empirycznych posłużono...
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How to model ROC curves - a credit scoring perspective
PublikacjaROC 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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Statistical Tuning of Walfisch-Ikegami Model for the Untypical Environment
PublikacjaThe Walfisch-Ikegami model has been investigated in terms of mobile radio systems designing in the untypical environment such as the maritime container terminal. The measurement equipment and procedures have been described as well as characteristics of investigated environment. Results of the statistical tuning in terms of path loss estimation in such environment have been analysed. The analysis has proved improvement of the path...
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Statistical Tuning of Walfisch-Ikegami Model for the Untypical Environment
PublikacjaThe Walfisch-Ikegami model has been investigated in terms of mobile radio systems designing in the untypical environment such as the maritime container terminal. The measurement equipment and procedures have been described as well as characteristics of investigated environment. Results of the statistical tuning in terms of path loss estimation in such environment have been analysed. The analysis has proved improvement of the path...
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SACAM A Model for Describing and Classifying Sentiment Analysis Methods
PublikacjaIn this paper we introduce SACAM — a model for describing and classifying sentiment analysis (SA) methods. The model focuses on the knowledge used during processing textual opinions. SACAM was designed to create informative descriptions of SA methods (or classes of SA methods) and is strongly integrated with its accompanying graphical notation suited for presenting the descriptions in diagrammatical form. The paper discusses applications...
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Objectivity in the non-Markovian spin-boson model
PublikacjaObjectivity constitutes one of the main features of the macroscopic classical world. An important aspect of the quantum-to-classical transition issue is to explain how such a property arises from the microscopic quantum theory. Recently, within the framework of open quantum systems, there has been proposed such a mechanism in terms of the so-called spectrum broadcast structures. These are multipartite quantum states of the system...
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Strength and Compressibility of Ammonia-Soda Residue from the Solvay Sodium Plant
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Neural Networks in the Diagnostics Process of Low-Power Solar Plant Devices
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Effect of pesticides on microorganisms, enzymatic activity and plant in biochar-amended soil
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Possibility of use adsorption chillers for increase efficiency in conventional power plant
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GENOMIC ANALYSIS OF PLANT-ASSOCIATED BACTERIA AND THEIR POTENTIAL IN ENHANCING PHYTOREMEDIATION EFFICIENCY
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Small Hydropower Plant With Integrated Turbine-Generators Working at Variable Speed
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Pilot plant studies on the removal of trihalomethanes by composite reverse osmosis membranes
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PCA application in assessment of fertilizer plant impact on different components of environment
PublikacjaW pracy podjęto próbę oceny wpływu Gdańskich Zakładów Nawozów Fosforowych "Fosfory" S.A. na najbliższe środowisko. W pracy przedstawiono wyniki świadczące o jakości różnych komponentów środowiska na terenie objętym wpływem zakładu. W pracy przedstawiono wyniki oznaczeń 44 pierwiastków w 46 próbkach gleb i traw pobieranych na terenie fabryki oraz w bezpośrednim sąsiedztwie. 37 z 44 oznaczonych pierwiastków użyto do wykonania analiz...
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Application of INAA in assesment of phosphatic fertilizer plant impact on the adjacent environment
PublikacjaW pracy przedstawiono wyniki badań przeprowadzonych na terenie GZNF "Fosfory" S.A. i wokół fabryki. Oznaczono szerokie spektrum pierwiastków w próbkach gleby, trawy, fosforytów, potrójnego superfosfatu, Amofoski i soli potasowej. Podjęto próbę oceny wpływu GZNF "Fosfory" na otaczające je środowisko. Badania przeprowadzono w ramach projektu UE "Fertilizers and Health" ICA2-CT-2000-10025, w którym brały udział: Holandia, Rosja, Uzbekistan,...
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Microbiological and biological aspects of wastewater tretment plant Wschód in Gdańsk Operation.
PublikacjaW pracy wykazano, iż w oczyszczalni Wschód w Gdańsku, pracującej w zmodyfikowanym systemie UCT, zanieczyszczenia bakteriologiczne ze ścieków są usuwane w granicach od 92% do ponad 99%, a zanieczyszczenia parazytologiczne niemal całkowicie. Pomimo tego odpływy są nadal dość znacznie zanieczyszczone bakteriologicznie o czym świadczy liczba bakterii wskaźnikowych oraz okresowa obecność bakterii z rodzaju Salmonella. Ustalono, iż...
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Aromatic heptaene antibiotics as an alternative for synthetic triazole fungicides in plant protection
PublikacjaAn in vitro antifungal activity of candicidin and ascosin antibiotics (0,01-10 μg/mL) towards representative strains of phytopathogenic fungi was detd. Both compds. exhibited similar half max. effective concns. inhibiting growth of the fungi as that of tebuconazole used for comparison.
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Hard tissue samples as markers of occupational exposure in phosphatic fertilizer plant
PublikacjaW pracy opisano zastosowanie próbek włosów i paznokci do oceny narażenia pracowników zakładów nawozów fosforowych na zanieczyszczenie metalami ciężkimi. Jako metodę oznaczania 25 pierwiastków we włosach i paznokciach zastosowano aktywacje neutronową. Do opracowania wyników i ich oceny zastosowano szereg metod chemometrycznych.
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Fractionation and origin of dissolved and colloidal organic nitrogen in BNR plant effluent
PublikacjaThe characteristics of effluent dissolved and colloidal organic nitrogen (DON and CON) as well as their origin, fate and biodegradability in wastewater treatment plants and receiving waters were identified as the major issues that limit the ability to achieve low total N in the effluent. This study presents the results of a comprehensive survey, which was conducted in eight biological nutrient removal (BNR) WWTPs in northern Poland....