Search results for " return"

ESTIMATION OF THE PRIVATE AND SOCIAL RATE OF RETURN FROM EDUCATION IN LATVIA

2014

IZGLĪTĪBAS PRIVĀTĀS UN SOCIĀLĀS ATDEVES NOVĒRTĒJUMS LATVIJĀ Anotācija Promocijas darba mērķis ir novērtēt izglītības ietekmi uz darba samaksu un darba produktivitāti indivīda un sabiedrības līmenī Latvijā, kā arī izstrādāt priekšlikumus izglītības nozīmes paaugstināšanai un atdeves novērtējuma lietošanai. Lai novērtētu izglītības privāto atdevi, tiek izmantota Mincera ienākumu funkcija, kā arī profesora E. de la Fuentes metodoloģija. Novērtējot sociālo atdevi, autore aprēķināja vīriešu un sieviešu (ar augstāko izglītību) cilvēkkapitālu laika posmā no 2000. līdz 2010. gadam un iegūtos rezultātus lietoja ražošanas funkcijā, aprēķinot izglītības ietekmi uz darba produktivitāti. Autore aprēķinā…

Humanities and Social Sciences Latvia, Vol. 26, N 1 (Spring-Summer)

2018

Switching to floating exchange rates, devaluations, and stock returns in MENA countries

2012

Abstract We test for the impact of the announcements of floating and/or devaluating the exchange rate on stock returns in three MENA countries after the financial crises they experienced. We, first, use an event-study methodology to test for event-induced abnormal volatility of stock returns in Egypt, Morocco and Turkey. We, then, use three different methodologies to test for abnormal returns: a traditional approach and two approaches that control for event-induced volatility. We find clear evidence of abnormal volatility and abnormal returns due to the floating of the Egyptian and Turkish exchange rates in 2003 and 2001, respectively. In contrast, our results do not show that the devaluati…

Bubbles in China

2010

This study examines rational bubbles in Chinese stock markets and China-related share indices in Hong Kong. A duration dependence test is employed for both monthly and weekly abnormal market returns of the Shanghai and Shenzhen A- and B-markets, as well as for the Hong Kong China Enterprises and China Affiliated Corporations indices. The test results are mixed, as weekly data demonstrate bubbles for all of the Mainland Chinese stock markets, but monthly data do not show bubbles for any of the examined markets. Neither of the datasets indicates bubbles in the Hong Kong markets. Results indicate that, in terms of bubbles, segmentation does not play a significant role in bubble existence and t…

Influence of PEEP on cerebral blood flow and cerebrovascular autoregulation in patients with acute respiratory distress syndrome.

2013

High levels of positive end-expiratory pressure (PEEP), as part of the treatment in patients with acute respiratory distress syndrome (ARDS), may prevent alveolar collapse and maintain oxygenation. PEEP potentially reduces cerebral venous return, increases intracranial blood volume, and may, therefore, affect cerebral blood flow (CBF) and cerebrovascular autoregulation (AR). This study investigates the effect of PEEP on CBF and AR in patients with respiratory failure.CBF velocity was measured using transcranial doppler and correlated with the invasive arterial blood pressure curve to calculate the index of AR Mx (Mx0.3 indicates impaired AR). Mx was measured at lower PEEP levels and after i…

Learning and the Price Dynamics of a Double-Auction Financial Market with Portfolio Traders

2006

In this paper we study the dynamics of price adjustments in an artificial market where portfolio traders with bounded rationality and limited resources interact through a continuous, electronic open book. The present work extends the model developed in [? ] introducing endogenous target individual portfolio holdings. We model the agents’ order-flow investment decision as an optimal choice given individual characteristics and the available information. We depart from the standard asset pricing framework in two ways. First, we assume that investors have imperfect information about the returns distribution. In particular, we assume that agents hold arbitrary priors about securities’ returns, w…

Sensitivity of external resources to cash flow under financial constraints

2014

Abstract This paper explores the external financing–cash flow relationship in capital structure theory by comparing unlisted (financially constrained) and listed (financially unconstrained) companies. We postulate that investment is determined endogenously in the case of unlisted firms, as they are strongly dependent on internally generated funds (cash flow). Consequently, unlisted firms invest their cash flow in profitable projects, using any residual cash flow to increase their holdings of safe assets. In turn, listed companies determine their investment exogenously and may reduce leverage if they raise an excess of cash flow. As a result, listed companies would react more negatively to s…

A comparison of marketing teaching methods in North American and European universities

2006

PurposeTo compare marketing education methods in Europe and North America, and analyse the opinions about effectiveness underpinning educators' choices among available options.Design/methodology/approachE‐mail questionnaires distributed to a sampling frame extracted from the worldwide directory of the Academy of Marketing Science were completed by 93 marketing academics in North America and 42 in Europe: a 26 per cent overall return rate. Data were analysed by χ2, ANOVA and correspondence analysis.FindingsThree teaching‐and‐learning methods are most common in both environments: practical exercises, case studies and lectures. Europeans tend to rely on lectures and other traditional methods, …

Evolutionary multi-objective optimization algorithms for fuzzy portfolio selection

2016

Graphical abstractDisplay Omitted HighlightsWe consider a constrained three-objective optimization portfolio selection problem.We solve the problem by means of evolutionary multi-objective optimization.New mutation, crossover and reparation operators are designed for this problem.They are tested in several algorithms for a data set from the Spanish stock market.Results for two performance metrics reveal the effectiveness of the new operators. In this paper, we consider a recently proposed model for portfolio selection, called Mean-Downside Risk-Skewness (MDRS) model. This modelling approach takes into account both the multidimensional nature of the portfolio selection problem and the requir…

Elastoplastic analysis by active macro-zones with linear kinematic hardening and von Mises materials.

2014

In this paper a strategy to perform elastoplastic analysis with linear kinematic hardening for von Mises materials under plane strain conditions is shown. The proposed approach works with the Symmetric Galerkin Boundary Element Method applied to multidomain problems using a mixed variables approach, to obtain a more stringent solution. The elastoplastic analysis is carried out as the response to the loads and the plastic strains, the latter evaluated through the self-equilibrium stress matrix. This matrix is used both, in the predictor phase, for trial stress evaluation and, in the corrector phase, for solving a nonlinear global system which provides the elastoplastic solution of the active…