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Specifična primarna energija v treh različnih stanovanjskih objektih
Mofeed El Ahmad, 1990, diplomsko delo

Objavljeno: 26.07.2007; Ogledov: 1129; Prenosov: 0

Integration prospects of Central and East European countries from the purchasing power parity perspective
Darja Boršič, Jani Bekő, Ahmad Zubaidi Baharumshah, 2008, objavljeni znanstveni prispevek na konferenci

Opis: After presenting the macroeconomic conditions in the group of 13 Central and East European countries and consequently their integration progress thus far, we proceed with testing of the purchasing power parity theory. By covering the period from January 1992 to December 2006, the standard unit root tests, SURADF methodology and time series cointegration analysis are employed on USD and European exchange rate series. The standard unit root tests applied fail to prove stationarity of the real exchange rate series. Although cointegration was found among nominal exchange rates and selected consumer price indices, the theory of purchasing power parity could not be confirmed for any of the advanced transition countries. Because the results from SURADF estimations support the theory in some countries of our sample clearly more research is required on factors that explain the behaviour of prices and exchange rates in the observed economies.
Objavljeno: 28.05.2012; Ogledov: 976; Prenosov: 8
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Re-examination of the purchasing power parity in Central and Eastern European economies
Ahmad Zubaidi Baharumshah, Jani Bekő, Darja Boršič, 2011, objavljeni znanstveni prispevek na konferenci

Opis: The empirical record on PPP tests for transition economies is far from being so opulent as it is for the developed market economies. This paper attempts to fill this gap by scrutinizing the theory of PPP on a sample of Central and Eastern European economies. The paper has two main advances with respect to previous PPP studies. First, it employs a monthly data base on real exchange rates for a panel of 12 Central and Eastern European economies by testing the theory separately with respect to US dollar and with respect to Euro. Second, we utilise a panel unit root test that involves the estimation of the ADF regression in a SUR framework. Since our study found support for the validity of PPP in some reforming European economies, special attention should be devoted to individual country-specific factors that cause PPP deviations.
Ključne besede: purchasing power parity, real exchange rates, stationarity test, exchange rate, currency, exchange rates, macroeconomics, parity, purchasing power of money, purchasing power
Objavljeno: 21.07.2017; Ogledov: 379; Prenosov: 81
.pdf Celotno besedilo (256,38 KB)
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A new solution for shallow and deep tunnels by considering the gravitational loads
Mohammad Reza Zareifard, Ahmad Fahimifar, 2012, izvirni znanstveni članek

Opis: A new, elasto-plastic, analytical-numerical solution, considering the axial-symmetry condition, for a circular tunnel excavated in a strain-softening and Hoek–Brown rock mass is proposed. To examine the effect of initial stress variations, and also the boundary conditions at the ground surface, the formulations are derived for different directions around the tunnel. Furthermore, the effect of the weight of the plastic zone is taken into account in this regard. As the derived differential equations have no explicit analytical solutions for the plastic zone, the finite-difference method (FDM) is used in this study. On the other hand, analytical expressions are derived for the elastic zone. Several illustrative examples are given to demonstrate the performance of the proposed solution, and to examine the effect of various boundary conditions. It is concluded that the classic solutions, based on the hydrostatic far-field stress, and neglecting the effect of the boundary conditions at the ground surface, give applicable results for a wide range of practical problems. However, ignoring the weight of the plastic zone in the analyses can lead to large errors in the calculations.
Ključne besede: ground-response curve, elasto-plastic analysis, boundary condition, axial symmetry, gravitational loads
Objavljeno: 13.06.2018; Ogledov: 386; Prenosov: 52
.pdf Celotno besedilo (406,96 KB)
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