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Tytuł:
Dynamics of loans in the Polish banking system
Autorzy:
Gadomski, J.
Powiązania:
https://bibliotekanauki.pl/articles/969683.pdf
Data publikacji:
2009
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
economic modeling
dynamics of loans
distributed lags
Opis:
At the macro level, the time-series of the amounts of loans granted (a flow) and repaid (a flow) to the banking system in each period are not available. The information on these flows is important in many analyses, such as the impact of the bank lending on investment outlays. However, one can get the information concerning the structure of loans (a stock variable) regarding their duration. In each period, the loans are granted for different periods: from overnight ones to those lasting several years. The effective preferences of the credit takers are reflected in the term distribution of the outstanding loans. In order to estimate these flows, a model aimed at linking the above-mentioned preferences, the levels of loans and flows has been developed. In the approach proposed, the amount of loans outstanding is a resultant of the rate of the new loans and their duration, which in turn is the result of the term preferences. The evaluation of the flow of loans granted in the Polish banking sector is presented.
Źródło:
Control and Cybernetics; 2009, 38, 3; 893-911
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On some properties of composite distributed lag models
Autorzy:
Gadomski, J.
Powiązania:
https://bibliotekanauki.pl/articles/406631.pdf
Data publikacji:
2013
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
economic modeling
distributed lags
lag distributions
Opis:
The analysis presented in this paper is focused on basic properties of discrete distributed lag models. Such models are commonly used to model dynamic systems in various applications. In the presented considerations, time-varying distributed lags have been analyzed. Composite distributed lag models analyzed in this paper result from the summation or superposition of component distributed lag models. The analysis is restricted to models with a lag distribution, whose mean lag and variance exist. The paper presents relationships between the mean values and variances of the lag distributions of composite distributed lag models and of the component distributed lag models, as well as the relationships between the variance of the random term of composite distributed lag models and the variance of the random term of the component distributed lag models.
Źródło:
Operations Research and Decisions; 2013, 23, 3; 5-22
2081-8858
2391-6060
Pojawia się w:
Operations Research and Decisions
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Geometric interpretation of the results of the measurements of engineering structures
Geometryczna interpretacja wyników pomiarów obiektów inżynierskich
Autorzy:
Gadomska, M.
Gadomski, J.
Powiązania:
https://bibliotekanauki.pl/articles/119046.pdf
Data publikacji:
2010
Wydawca:
Polskie Towarzystwo Geometrii i Grafiki Inżynierskiej
Tematy:
visualization
geometric interpretation
displacement
geodetic measurements
wizualizacja
interpretacja geometryczna
przemieszczenie
pomiary geodezyjne
Opis:
In this paper, examples of graphic presentations of performed measurement results have been presented. These results concern vertical and horizontal dislocations and deformations of given objects. The monitored objects were two churches, both situated near a very busy street, and a hall of a newly built building. One church was about 80 years old and the other 100 years old. The visualization of the findings, mainly presented in the 3D technique, is of great importance for interpretation of the change geometry of the objects in time and finding the causes of their dislocations and deformations.
W artykule przedstawiono przykłady graficznej prezentacji wyników pomiarów przemieszczeń poziomych i pionowych oraz odkształceń wybranych obiektów. Monitorowane obiekty to kościoły: 80. letni i ponad 100. letni położony przy ulicy o bardzo dużym natężeniu ruchu oraz hala nowo wybudowanego obiektu. Wizualizacja wyników, głównie w układzie 3D, ma duże znaczenie dla interpretacji zmian geometrii obiektu w czasie oraz ustalenia przyczyn przemieszczeń i deformacji.
Źródło:
Journal Biuletyn of Polish Society for Geometry and Engineering Graphics; 2010, 21; 23-28
1644-9363
Pojawia się w:
Journal Biuletyn of Polish Society for Geometry and Engineering Graphics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Deterministic properties of serially connected distributed lag models
Autorzy:
Nowak, P.
Gadomski, J.
Powiązania:
https://bibliotekanauki.pl/articles/406350.pdf
Data publikacji:
2013
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
distributed lags
limit properties
characteristics of distributed lags
Opis:
Distributed lag models are an important tool in modeling dynamic systems in economics. In the analysis of composite forms of such models, the component models are ordered in parallel (with the same independent variable) and/or in series (where the independent variable is also the dependent variable in the preceding model). This paper presents an analysis of certain deterministic properties of composite distributed lag models composed of component distributed lag models arranged in sequence, and their asymptotic properties in particular. The models considered are in discrete form. Even though the paper focuses on deterministic properties of distributed lag models, the derivations are based on analytical tools commonly used in probability theory such as probability distributions and the central limit theorem.
Źródło:
Operations Research and Decisions; 2013, 23, 3; 43-55
2081-8858
2391-6060
Pojawia się w:
Operations Research and Decisions
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A multicriteria model for analyzing the impact of EU GHG limiting policies on economic growth: The case of Poland
Autorzy:
Gadomski, J.
Krus, L.
Nahorski, Z.
Powiązania:
https://bibliotekanauki.pl/articles/205698.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
greenhouse gases
curbing emissions
government policy
multicriteria optimization
technological change
economic growth
Opis:
In this study, a macroeconomic model and the multicriteria approach are used to analyze the impact of the enforced greenhouse gas (GHG) emission limits on economic development and future consumption in a small open economy country, like Poland. The following questions are considered: how economic transformation, connected with adjustment of the national economy to the policy limiting GHG emission would proceed? what may be the consequences of the enforced emission limits for the economic development and future consumption? The model answers these questions by presenting time trajectories, describing the evolution of three sectors, which influence GHG emission, namely those producing intermediary inputs, consumer goods, and investment goods. The sectors interact via markets of the relevant goods. The model takes into account the inertial behavior of the large-scale dynamic system, as well as social and political resistance to changes. It also indicates technological changes in the form of time-varying shares of two technologies, namely the GHG emission intensive and the GHG emission avoiding ones. Two competing objectives are considered in the multicriteria analysis, i.e. maximization of consumption and minimization of GHG emission. The costs of pursuing the GHG limiting policy are assessed in terms of lost consumption. The multicriteria analysis is performed with the use of the derived representation of the Pareto optimal outcomes. Computational results are presented for the case of Poland. They show three phases in a transition period, early growth on the basis of existing assets in the initial years, a depression phase, where technological changes mainly occur, and a period of renewed growth. They are followed by a steady development under new emission conditions.
Źródło:
Control and Cybernetics; 2018, 47, 1; 55-83
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of induction sensors for measurement of vertical displacements occureing during bridge load tests
Autorzy:
Mroziński, S.
Gadomski, J.
Gadomska, M.
Powiązania:
https://bibliotekanauki.pl/articles/225234.pdf
Data publikacji:
2011
Wydawca:
Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:
pomiary
czujniki indukcyjne
mosty
measurement
inductive sensors
bridges
Źródło:
Reports on Geodesy; 2011, z. 1/90; 315-322
0867-3179
Pojawia się w:
Reports on Geodesy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Forecasting of vertical displacements based on a time series
Autorzy:
Gadomski, J.
Gadomska, M.
Kumor, M. K.
Powiązania:
https://bibliotekanauki.pl/articles/224389.pdf
Data publikacji:
2007
Wydawca:
Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:
przemieszczenia pionowe
szeregi czasowe
pomiary geodezyjne
vertical displaceents
time series
engineering surveying
Opis:
Before research, a graphical analysis of time series is important to carry out because the configuration of empirical points in a proper Cartesian coordinate system enables one to make a decision which class the researched trend function belongs to. When verifying the model it should be checked whether received values of structural parameters estimation are reasonable. The method of extrapolation of time series can be used to forecast only in case when the mechanism of development of the researched effect does not change in time considerably or in case if the mechanism of development of the researched effect is not known and we cannot recognize it. The forecast horizon can be dependent on inertia of researched variables. For variables with a big inertia the forecast horizon can be considerably longer. Longer forecast horizon corresponds with less probability of occurrence of the provided state and simultaneously certainty of the forecast is less. Another question is a stability of the model. It does not mean that the model will be stable after the period the model was estimated, i.e. it will be stable in future. Adaptive models are useful in case of lack of stability in the researched period. Forecast procedures based on those models assume that the effect intensification in time can be segmental, i.e. "smooth", only in some intervals of time. Such models are particularly important for short-term forecasts. Taking one of the following models into account depends on: - clear interpretation of model's parameters, - possibility of a simple estimation of the model's parameters, - the level of accuracy that the model describes the effect's development in time. It should be noticed that building a "good" model describing the given effect on the base of data from the past not always can be proper in future. To enlarge forecast certainty (especially for short time series) several forecasting methods should be used and their results should be compared.
Źródło:
Reports on Geodesy; 2007, z. 1/82; 69-74
0867-3179
Pojawia się w:
Reports on Geodesy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Komunikaty meteorologiczne dla artylerii przeciwlotniczej
Meteorological messages for anti-aircraft artillery
Autorzy:
Baranowski, L.
Chiliński, M.
Gadomski, B.
Jasiński, J.
Powiązania:
https://bibliotekanauki.pl/articles/234785.pdf
Data publikacji:
2017
Wydawca:
Wojskowy Instytut Techniczny Uzbrojenia
Tematy:
METCM
METB
meteo-11
komunikat meteorologiczny
meteorological communication
Opis:
Wpływ warunków meteorologicznych na tor lotu pocisku jest tematem rozważań naukowych przynajmniej od początku poprzedniego wieku. W tym czasie powstały różne standardy oraz metody uwzględniania zmian warunków meteorologicznych przy wyznaczaniu nastaw działowych. W artykule zaprezentowano kilka najbardziej rozpowszechnionych metod. Dodatkowo przedstawiono rezultaty ich zastosowania na przykładzie armaty przeciwlotniczej KDA 35 mm.
Impact of meteorological conditions on projectile trajectory has been subjected to scientific research since the beginning of 20th century. During this time different standards and methods of taking meteorological conditions into account in calculations of firing an-gles were established. This paper presents a number of widely used methods and the results of their application basing on an example of KDA 35 mm antiaircraft gun.
Źródło:
Problemy Techniki Uzbrojenia; 2017, 46, 141; 7-23
1230-3801
Pojawia się w:
Problemy Techniki Uzbrojenia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of explicit and implicit forms of the modified point mass trajectory model
Autorzy:
Baranowski, L.
Gadomski, B.
Szymonik, J.
Majewski, P.
Powiązania:
https://bibliotekanauki.pl/articles/280031.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
exterior ballistics
projectile motion
MPMTM
equations of motion
projectile trajectory
Opis:
The article compares the results of trajectory computation for a 35 mm projectile using two forms (explicit and implicit) of the modified point-mass trajectory model. All necessary ammunition parameters (aerodynamic coefficients, dimensions, mass etc.) and initial conditions for differential equations are provided. The results of numerical integration (using non-stiff fourth-order Runge-Kutta solver) are presented in form of projectile trajectories projections onto vertical and horizontal planes. Data tables comparing both models in terms of projectile position and velocity in chosen time steps are also attached.
Źródło:
Journal of Theoretical and Applied Mechanics; 2016, 54, 4; 1183-1195
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
35 mm ammunition’s trajectory model identification based on firing tables
Autorzy:
Baranowski, L.
Gadomski, B.
Majewski, P.
Szymonik, J.
Powiązania:
https://bibliotekanauki.pl/articles/200598.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
identification
exterior ballistics
equations of projectile motion
curve fitting
drag coefficient
identyfikacja
ruch pocisku
współczynnik oporu
Opis:
The article presents a procedure designed for identification of projectile’s trajectory model through aerodynamic coefficients estimation. The identification process is based on firing tables artificially prepared (firing tables prepared using mathematical flight model for the projectile instead of trajectories recorded on field tests) with the use of modified point–mass and rigid body trajectory models. All the necessary data, including physical parameters of the projectile and its aerodynamic characteristics are provided. The detailed results of estimation of chosen aerodynamic coefficients are presented in both visual and tabular form. The main purpose of this paper is to establish the minimum number of trajectories (as characterized in firing tables), and the permissible error of initial parameters being passed to the mathematical model that would allow the correct identification of projectile’s trajectory model.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2018, 66, 5; 635-643
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Explicit “ballistic M-model”: a refinement of the implicit “modified point mass trajectory model”
Autorzy:
Baranowski, L.
Gadomski, B.
Majewski, P.
Szymonik, J.
Powiązania:
https://bibliotekanauki.pl/articles/202089.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
ballistics
equations of motion
projectile path
modified point mass trajectory model
MPMTM
projectile deflection
balistyka
równania ruchu
lot pocisku
Opis:
Various models of a projectile in a resisting medium are used. Some are very simple, like the “point mass trajectory model”, others, like the “rigid body trajectory model”, are complex and hard to use, especially in Fire Control Systems due to the fact of numeric complexity and an excess of less important corrections. There exist intermediate ones - e.g. the “modified point mass trajectory model”, which unfortunately is given by an implicitly defined differential equation as Sec. 1 discusses. The main objective of this paper is to present a way to reformulate the model obtaining an easy to solve explicit system having a reasonable complexity yet not being parameter-overloaded. The final form of the M-model, after being carefully derived in Sec. 2, is presented in Subsec. 2.5.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2016, 64, 1; 81-89
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
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