Wyniki wyszukiwania - BazTech

1

Solving a large heterogeneous-agent general equilibrium model with labour market frictions

Antosiewicz M.

Control and Cybernetics

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2016

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Vol. 45, no. 4

513--523

EN

In this paper we build and solve a heterogeneous-agent dynamic stochastic general equilibrium (DSGE) model with incomplete markets in the spirit of Krussel and Smith (1998). We expand this model to account for search and matching labour market frictions, using the classic Mortensen and Pissarides (1994) framework. The model, therefore, combines two important strands of economic modelling and presents a numerical challenge in terms of solving the model due to the inclusion of additional dimensions in the optimization problem. Despite the addition of additional state variables and higher dimensionality, we show that we are able to eﬃciently solve it numerically using value function iteration and we document basic properties of the model.

2

Choice of best possible metaheuristic algorithm for the travelling salesman problem with limited computational time: quality, uncertainty and speed

Antosiewicz M., Koloch G., Kamiński B.

Journal of Theoretical and Applied Computer Science

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2013

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Vol. 7, nr 1

46--55

EN

We compare six metaheuristic optimization algorithms applied to solving the travelling salesman problem. We focus on three classical approaches: genetic algorithms, simulated annealing and tabu search, and compare them with three recently developed ones: quantum annealing, particle swarm optimization and harmony search. On top of that we compare all results with those obtained with a greedy 2-opt interchange algorithm. We are interested in short-term performance of the algorithms and use three criteria to evaluate them: solution quality, standard deviation of results and time needed to reach the optimum. Following the results from simulation experiments we conclude that simulated annealing and tabu search outperform newly developed approaches in short simulation runs with respect to all three criteria. Simulated annealing finds best solutions, yet tabu search has lower variance of results and converges faster.

3

System pozycjonowania precyzyjnego o przeznaczeniu ogólnopolskim dla województwa małopolskiego

Antosiewicz M.

Geomatics and Environmental Engineering

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2007

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Vol. 1, no. 1/1

23-42

PL

We wrześniu 2006 r. uruchomiony został Małopolski Systemem Pozycjonowania Precyzyjnego (MSPP) o przeznaczeniu ogólnogospodarczym. Działania związane z utworzeniem systemu miały na celu: - zapewnienie możliwości wyznaczania z dokładnością do 3 cm pozycji dowolnego punktu za pomocą systemu satelitarnego NAVSTAR GPS i powierzchniowych poprawek RTK/DGPS generowanych na podstawie sieci równomiernie rozłożonych stacji referencyjnych; - dostarczenie narzędzia wspierającego rozwój regionalny w zakresie wykorzystania systemu GPS dla celów ogólnogospodarczych, w tym systemów teleinformatycznych do koordynacji, zarządzania i monitoringu. Prace przy MSPP obejmowały: budowę w województwie małopolskim 3 dodatkowych stacji referencyjnych (Tarnów, Nowy Targ, Proszowice), utworzenie systemu obliczeniowego do generowania powierzchniowych poprawek RTK/DGPS oraz dostawę 8 odbiorników GPS przeznaczonych do precyzyjnych pomiarów RTK. W MSPP zastosowano rozwiązanie, opracowane w firmie Trimble/Terrasat wykorzystujące technologię wirtualnych stacji referencyjnych (Virtual Reference Stations - VRS). Główne cechy funkcjonalne systemu MSPP: - otwartość systemu, a tym samym możliwość rozbudowy systemu, dołączania kolejnych stacji, wprowadzania nowych formatów udostępnianych danych; - wysoka dokładność wyznaczania pozycji (do 3 cm w poziomie) przy zachowaniu 99% poziomu ufności wyznaczenia; - udostępnianie danych w trybie 24h/365 dni (24 godziny na dobę przez 365 dni w roku); - szybkość i prostota obsługi przy zapewnieniu automatycznego wznawiania działania w przypadku wystąpienia sytuacji awaryjnych; - możliwość dystrybucji poprawek RTK/DGPS poprzez transmisję GSM/GPRS, Internet lub FM w ramach osobnych pakietów transmisji: dla całej sieci, dla każdej stacji; - generowanie i prezentacja wyników, raportów, analiz działania systemu w postaci opisowej i graficznej. Podpisanie umowy o współpracy pomiędzy Głównym Geodetą Kraju, Województwem Śląskim i Województwem Małopolskim, pozwoliło na objęcie działaniem systemu MSPP (poprawki RTK/DGPS) obszaru województw: śląskiego i małopolskiego. Dzięki udostępnieniu stacji Centrum Badań Kosmicznych w Warszawie, dane z tej stacji będą dostępne dla rejonu Warszawy, a dla obszaru pomiędzy Warszawą, Katowicami i Krakowem będą dostępne precyzyjne poprawki DGPS. Budowa MSPP została zrealizowana ze środków Zintegrowanego Programu Operacyjnego Rozwoju Regionalnego działanie 1.5 - Infrastruktura Społeczeństwa Informacyjnego - wchodzącego w skład Europejskiego Funduszu Rozwoju Europejskiego.

EN

In September 2006, the Małopolski Precise Positioning System (Małopolski System Pozycjonowania Precyzyjnego - MSPP) for universal economic purposes was initiated. The activities related to developing the system aimed at: - ensuring an opportunity to set the position of any point with 3 cm accuracy using the NAVSTAR GPS satellite system and the RTK/DGPS surface corrections generated based on the network of evenly distributed reference stations; - providing an instrument to support regional development in using the GPS system for universal economic purposes, including ICT systems for coordination, management and monitoring. Working on MSPP included: constructing 3 additional reference stations in the Małopolskie Province (Tarnów, Nowy Targ, Proszowice), creating a computing system to generate RTK/DGPS surface corrections, and delivering 8 GPS receivers for precise RTK measurements. MSPP uses a solution developed by Trimble/Terrast company, using the Virtual Reference Stations technology (VRS). Main functional features of the MSPP: - openness of the system, which means that the system can be expanded, more stations can be added, new format of available data introduced, - high accuracy of positioning (up to 3 cm horizontally), keeping 99% level of confidence, - making data available 24h/365 days (24 hours a day, 365 days a year), - rapid and easy operation with automatic restarting option in case of emergency, - possibility to distribute RTK/DGPS corrections through GSM/GPRS transmission, the Internet or FM within separate transmission packages: for all the network and every station. Signing a cooperation agreement between the Chief National Geodesist, the Śląskie Province and the Małopolskie Province, allowed to include in the scope of the MSPP operation (RTK/DGPS corrections) the area of the two provinces. Using the station of the Space Research Centre in Warsaw makes data from this station available for the Warsaw area, and precise DGPS corrections will be available for the area between Warsaw, Katowice and Krakow. The MSPP construction has been completed by the Małopolskie Province Marshal Office with the resources of the Integrated Operational Program for Regional Development measure 1.5 - Information Society Infrastructure, constituting a part of the European Regional Development Fund.

4

GPS w Małopolsce

Antosiewicz M.

Geodeta : magazyn geoinformacyjny

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2007

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nr 5

16-20

5

Doświadczenia w udostępnianiu danych przestrzennych dla Centrum Pawiadamiania Ratunkowego TOPR/GOPR

Antosiewicz M., Podlasek S.

Roczniki Geomatyki

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2006

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T. 4, z. 1

121-126

EN

Recently, there is growing interest in geoinformation, which allows for coordination and support of the activities of rescue services. In order to precisely determine the needs in the area of crisis management in the Małopolskie Voivodeship several consultations were held with the rescue services involved. According to the collected data, the most important for rescue teams application of geoinformation is to define exact localization of the event, monitoring and navigation of the groups operating in the area, to specify available resources and technical means and to determine technical infrastructure of the object and other elements which could be a potential threat to health and life. When analysing gathered data it is possible to determine the range of spatial information, which enables coordination and support of rescue services. This range includes topographic and thematic database with selected information range, with the level of detail corresponding to maps at scales 1:10 000 and 1: 50 000, and even larger for water-pipes, gas pipes and power grid. At present, geodetic resources of Voivodship do notcontain data meeting all expectations of rescue services. The Voivodeship only has complete spatial databases with the level of details corresponding to maps in the scale 1: 50 000 such as VMAP Level2 and computer-based atlas of Małopolskie Voivodeship and thematic products: sozologic and hydrographic database. A complementary product is orthophotomap from 2002.2003, in scale 1 : 5000. The activities planned by Malopolskie Voivodeship for the coming years should gradually improve the situation. These activities include: m making of the Topographical Database (level of detail 1:10 000) for the whole Voivodeship with the most important information layers, m participation in the project .Methodology and procedures of integration, visualization, generalization and standardization reference database available in geodetic and cartographic resources and their use to create thematic database., m building and implementing a pilot monitoring system for TOPR (Tatra Voluntee Rescur Service) cooperation with rescue services in monitoring and control systems which use GPS.

6

GPS w zarządzaniu informacją o środowisku

Antosiewicz M., Wężyk P.

Roczniki Geomatyki

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2005

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T. 3, z. 3

125-133

EN

The use of GPS receivers in scientific research, in the implementation of research results or in the completion of environmental tasks defined in certain EU directives, is becoming increasingly important. The measurement technique and receiver operation have been made simple and user-friendly, meaning that research biologists can often take themselves field measurements that in previous years required the skills of a chartered land surveyor. Geometric and descriptive databases updated on a daily basis are indispensable for the efficient operation of GIS/SIP systems that support decisionmaking processes and the implementation of protection programmes in national parks and other environmentally sensitive areas. GPS receivers with the option of logging measurement data are becoming the most popular tool used to update databases in an efficient and affordable way. The need to develop digital maps of protected areas and forested land managed by Regional Forest Enterprises has been emphasised more and more in recent years. In many cases, a DGPS measurement is the only source of information in the process of reviewing existing data (e.g. in the calibration of analogue maps) or measurements of control points on archived aerial photographs. Recent examples of the implementation of GPS technology in environmental research include the development of photo-interpretation models used to obtain remote-sensing pictures (aerial photographs and satellite images), or navigation in training, monitoring and observation areas. A GPS receiver, equipped with a data logging device and software, including a data dictionary, significantly improves the efficiency of field data collection and the transfer of data to geometric and descriptive databases of GIS (SIP) systems. The scope of use of GPS receivers in Polish national parks (NP) varies according to the financial resources available to purchase the receivers, the GIS systems implemented and the adoption of an open approach to geomatics systems. The National Forest Enterprise (PGL Lasy Panstwowe), which manages 25% of the Polish territory, approved the use of GPS receivers in forest management in 2001. The receivers have principally been used to update the Forest Digital Map, i.e. a geometric database. The map viewers and software necessary to update information, introduced recently, enable managers to make use of data obtained from GPS receivers. The receivers may be useful in the operation of forest machinery (forest utilisation) or in protective action (aerial spraying or fire fighting) - these options have also been implemented in the National Forest Enterprise. The use of GPS in navigation significantly reduces expenditure on transport and optimises journeys to monitoring points. In view of the National Afforestation Programme adopted by the Polish government, the use of GPS receivers in navigating and measuring newly forested areas or wood succession in post-agricultural areas takes on a new dimension. Recently, we have observed a growing interest from biologists and personnel employed in national parks or nature reserves in the integration of GPS receivers with data logging devices equipped with LCD displays, i.e. with hand-held computers. The EU programmes, including Phare, have provided significant support for managers applying the GPS technology in areas included in the "Natura 2000" European ecological network. Large-scale use of GPS receivers in protected areas with varying status, and even in the National Forest Enterprise, has its disadvantages resulting from the relatively low accuracy of the devices that are actually used. The consequences of a measuring error in the positioning of a wolf track, even by a dozen metres, may be negligible, but measurements of nature reserve boundaries or the location of an endangered plant species require precision - the use of differential measurements (DGPS) is necessary. Unfortunately, this method is not always available due to receiver features; moreover, some sers are not aware of the Differential GPS method. In most cases, measurements are corrected with the use of data from base-stations (Tatra NP), radio beacons on the Baltic Sea coast (Woliński NP, Słowiński NP), satellite signals or signals from the generally available Active Geodetic Network (ASG-PL), which were used in the tests performed in Miasteczko Śląskie.

7

Powierzchniowy RTK/DGPS

Kudła J., Antosiewicz M., Świątek A., Jaworska L.

Geodeta : magazyn geoinformacyjny

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2004

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nr 9

16--18

8

Przewodnik po ASG-PL

Antosiewicz M., Wawrzyn J, Jaworski L., Świątek A.

Geodeta : magazyn geoinformacyjny

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2003

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nr 10

22--26

9

Pewniej i taniej

Antosiewicz M., Wawrzyn J, Jaworski L., Świątek A.

Geodeta : magazyn geoinformacyjny

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2003

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nr 12

32--34