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- 저자 : Salma KARIM (검색결과 4 건)
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Numerical Procedure for the Three-Dimensional Nonlinear Modelling of Composite Steel–Concrete Beams
Karim Benyahi,Youcef Bouafia,Marc Oudjene,Salma Barboura,Mohand Said Kachi 한국강구조학회 2021 International Journal of Steel Structures Vol.21 No.3
Composite steel–concrete structures are commonly used in the fi eld of bridges, where the steel frame provides great ease of installation, and concrete provides useful strength at low cost. This construction system makes it possible to seek to use each material to the best of its ability, so as to provide the entire construction system with greater savings. The purpose of this article is to be able to perform the simulation and the non-linear elastic calculation of composite steel–concrete beams through a calculation approach based on a matrix method of displacements. The numerical calculation model developed is based on taking into account the non-linearity of materials, or a set of laws allowing the modeling of the nonlinear behaviors of materials under an instantaneous and monotonous loading increasing until the ruin; the concrete is represented in its post-elastic part by a softening branch in compression and the contribution of the concrete stretched between two successive cracks is taken into account. Steel is represented by a perfect elastoplastic law or an elastoplastic law with fi rming. The proposed approach has been implemented on the Fortran programming language, where our procedure of numerical modeling of the mechanical behavior seems capable of correctly simulating the three-dimensional nonlinear behavior of isostatic and hyperstatic composite steel–concrete beams, under monotonous (increasing) static loading until ruin. It was validated by comparing the results of our calculations to experimental results or to analytical solutions.
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COVID-19, Remittance Inflows, and the Stock Market: Empirical Evidence from Bangladesh
Md,QAMRUZZAMAN,Salma KARIM,Ishrat JAHAN 한국유통과학회 2021 The Journal of Asian Finance, Economics and Busine Vol.8 No.5
This study’s motivation is to investigate the association between the stock market, remittance, and the pandemic of COVID-19 for the period from March 3, 2020, to December 14, 2020. For evaluating the impact of COVID-19 and remittances on stock market behaviour during the pandemic, the study applies Autoregressive Distributed lagged (ARDL) for magnitudes estimation and directional association through the Toda-Yamamoto causality test. Study findings from ARDL estimation revealed that COVID-19 measured by detecting new cases negatively influences the stock market both in the long-term and short-term. Remittance positively influences the stock market behaviour, particularly in the long-term. Furthermore, the directional causality test disclosed unidirectional causal effects between COVID-19 and the stock market behaviour, which establishes all proxy measures for the equation’s stock market. The hypothesis results explain the causal relationship between remittance inflows and the stock market in Bangladesh. The study’s application will help policymakers rethink the policies for channelizing remittances for productive investment areas. Furthermore, the study’s findings will reinstate the widely perceived notions, which is the critical role of remittance in the economy even though the economy passes through a great pandemic.
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Md. QAMRUZZAMAN,Salma KARIM,Jianguo WEI 한국유통과학회 2019 The Journal of Asian Finance, Economics and Busine Vol.6 No.4
The study aims to investigate the pattern of relationships such as symmetric or asymmetric, between exchange rate and foreign direct investment in Bangladesh by applying Autoregressive Distributed Lagged (ARDL) and nonlinear ARDL. In this study, we employed quarterly data for the period of 1974Q1 to 2016Q4. Data were collected and aggregated from various sources namely, Bangladesh Economic Review published by Ministry of Finance and statistical yearbook published by Bangladesh Bureau of Statistics and an annual report published by Bangladesh Bank. The relationship between exchange rate and FDI inflows attract immense interest in the recent periods, especially for developing countries’ perspective. The results of the study ascertain the long run relationship between FDI, exchange rate, monetary policy, and fiscal policy. Considering the asymmetric assumption, the findings from NARDL confirm the existence of a long-run asymmetric relationship in the empirical equation. In the long run, it is observed that positive change that is the appreciation of exchange rate against USD decrease FDI inflows and negative shocks results in grater inflows of FDI, however, the positive shocks produce higher intensity that negative shocks in Exchange rate. For directional causality, the coefficients of error correction term confirm long-run causality, in particular, bidirectional causality unveiled between FDI and exchange rate.
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The Impact of Voluntary Disclosure on Firm’s Value
Md,QAMRUZZAMAN,Ishrat JAHAN,Salma KARIM 한국유통과학회 2021 The Journal of Asian Finance, Economics and Busine Vol.8 No.6
Financial reporting includes disclosures as prescribed by regulators, but few companies go beyond mandatory requirements and provide additional information voluntarily. This study evaluates the potential impact of voluntary information disclosure on the value of firms listed on the Dhaka Stock Exchange for the period 2017–2019. The study applies GLS and system-GMM (Two-stage) estimation for detecting the magnitude of voluntary disclosure information on the firms’ value. Study findings reveal a positive and significant relationship between voluntary disclosure relating to financial statistics, social responsibility information, corporate governance, and the firms’ value as measured by Tobin’s Q. However, there is a negative and significant relationship between company information, accounting policies, and the firms’ value as measured by Tobin’s Q. Study findings suggest that the impact of voluntary disclosure on the value of the firms varies with the appropriate selection of proxy measures. Nonetheless, it is believed that voluntary disclosure plays a major role in projecting a clean image in the market and in attracting potential investors with a positive note about the company’s prospects.
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