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C*-compactness in L-Fuzzy Topological Spaces
Kandil,O.Tantawy,M.Yakout,S.Saleh 한국지능시스템학회 2009 INTERNATIONAL JOURNAL of FUZZY LOGIC and INTELLIGE Vol.9 No.4
In this paper we introduce stronger form of the notion of cover so-called p-cover which is more appropriate. According to this cover we introduce and study another type of compactness in L-fuzzy topology so-called C*-compact and study some of its properties with some interrelation.
Silver Nanoparticles Effect on Antimicrobial and Antifungal Activity of New Heterocycles
Kandile, Nadia G.,Zaky, Howida T.,Mohamed, Mansoura I.,Mohamed, Hemat M. Korean Chemical Society 2010 Bulletin of the Korean Chemical Society Vol.31 No.12
In this study 1-[4-(2-methoxy benzyl)-6-aryl-pyridazin-3(2H)-ylidene] hydrazines were used for the synthesis of new heterocyclic systems such as thiazolidine, phthalazine, pyrazolo, tetrazolo, hydrazide and new pyridazine derivatives to explore the effect of silver nanoparticles on their biological activity efficiency. Structures of the new heterocycles were characterized by the aid of several analytical techniques including; $^1H$-NMR, FTIR and mass spectra. Silver nanoparticles were synthesized by a simple methodology and the formation of silver nanoparticles was confirmed by transmission electron microscopy (TEM) and UV studies. Most of the new prepared heterocycles were evaluated in vitro as new antimicrobial agents. Combination effects of the silver nanoparticles on the antimicrobial activity of the new heterocycles were investigated using the disk diffusion method. Compound 10a exhibited the strongest enhancing effect of silver nanoparticles solution against Aspergillus flavus and Candida albicans.
KANDIL, MAGDA 한국국제경제학회 2002 International Economic Journal Vol.16 No.1
The focus of this investigation is on the asymmetric effects of monetary growth shocks in the pre-and post-war periods of United States history. The downward rigidity of nominal wages in the post-war period appears to be an important factor in differentiating the slope of the aggregate supply curve over time. Accordingly, the response of real output and price to expansionary monetary growth shocks is similar in the pre-and post-war periods. In contrast, the aggregate supply curve is flatter in the face of negative monetary growth shocks in the post-war period, exacerbating output contraction and moderating price deflation. The apparent change in the asymmetric effects of monetary growth shocks has determined economic performance in the United States over time. [E30, E33, E34, E35]
Consumption, Credit, and Macroeconomic Policies: Theory and Evidence from the United States
MAGDA KANDIL,IDA AGHDAS MIRZAIE 연세대학교 동서문제연구원 2011 Global economic review Vol.40 No.3
The paper examines determinants of private consumption in the USA. The empirical model includes disposable income, the University of Michigan consumer sentiment index, the interest rate, and the real effective exchange rate. Anticipated movements in these determinants are likely to affect planned consumption, while unanticipated changes determine cyclical consumption. Fluctuations in private consumption are mostly cyclical with respect to changes in disposable income and the consumers’ sentiment index. In contrast, an increase in the interest rate decreases both planned and cyclical consumption. Fiscal policy has a direct negative effect on cyclical consumption, which is not dependent on the interest rate. Monetary growth, in contrast, increases liquidity to finance both planned and cyclical private consumption.
C<SUP>*</SUP>-compactness in L-Fuzzy Topological Spaces
Ali Kandil Saad,Osama A. E. Tantawy,Mohammed Mostafa Yakout,Salem Ali M. Saleh 한국지능시스템학회 2009 INTERNATIONAL JOURNAL of FUZZY LOGIC and INTELLIGE Vol.9 No.4
In this paper we introduce stronger form of the notion of cover so-called p-cover which is more appropriate. According to this cover we introduce and study another type of compactness in L-fuzzy topology so-called C<SUP>*</SUP>-compact and study some of its properties with some interrelation.
Exchange Rate Variability and the Macro-economy: Evidence from Developing and Developed Countries
Magda Kandil 연세대학교 동서문제연구원 2013 Global economic review Vol.42 No.2
Using annual data, the paper studies the time-series evidence regarding the allocation of fluctuations in the exchange rate between demand components, real growth, and price inflation in a sample of developing and advanced countries. The evidence reveals patterns of interaction between the macro-economy and exchange rate variability. Across developing countries, appreciation decreases the cost of imports and price inflation, while depreciation shrinks the output supply, indicating high dependency on imported goods. The reduction in output supply correlates with higher inflation and an increase in the import value. In contrast, the evidence of the negative effect of currency appreciation on output growth is more prevalent across advanced countries, while depreciation stimulates competitiveness, resulting in higher demand for exports, investment and consumption. Across developing countries, exchange rate variability decreases trend real growth and increases trend price inflation. Across advanced countries, exchange rate variability decreases trend real growth while increasing the variability of price inflation and import growth. Minimizing variability of the exchange rate would be beneficial to sustain higher growth and reduce cyclical variability in developing and advanced countries.
Pairwise soft separation axioms in soft bitopological spaces
A. Kandil,O. A. E. Tantawy,S. A. El-Sheikh,Shawqi A. Hazza 원광대학교 기초자연과학연구소 2017 ANNALS OF FUZZY MATHEMATICS AND INFORMATICS Vol.13 No.5
The motivation of the current paper is to define and study some soft separation axioms in soft bitopological spaces in terms of pairwise softness namely, pairwise soft $T^{*}_{0}$, pairwise soft $T^{*}_{1}$, pairwise soft $T^{*}_{2}$, and pairwise soft $R^{*}_{1}$. Characterizations and properties of these soft separation axioms have been obtained. Moreover, we study the implications of these types of soft separation axioms in soft and crisp cases. Finally, we show that these properties are hereditary.
Magda Kandil 한국국제경제학회 2018 International Economic Journal Vol.32 No.4
Using data for a sample of advanced and developing countries, the paper studies variation in the effects of aggregate demand shocks on the macro-economy and distinguish between the effects of expansionary and contractionary shocks. The aim is to study the determinants and implications of cyclicality across representative countries in each group. The composite evidence points to high degree of cyclicality in many countries. The risk of cyclicality is higher in developing countries as high trend inflation limits the scope to mobilize growth and increases downward rigidity of prices. Policy priorities in developing countries should be focused on fighting inflation and improving the investment environment towards maximizing the return on investment and sustaining growth and capacity building. Policy priorities in advanced countries should be focused on mobilizing resources to ease capacity constraints and finance larger investment, with limited crowding out, to maximize the potential of real growth and combat inflationary pressures.