22 research outputs found

    Some fixed point results for continuous functions on an arbitrary intervals

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    In this paper, we first give a necessary and sufficient condition for convergence of Picard-S iteration process to a fixed point of continuous functions on an arbitrary interval and prove equivalence of Picard-S and P iterative processes. We also compare the rate of convergence between Picard-S and some others iteration processes in the literature. Finally, some numerical examples for comparing the rate of convergence of those methods are also given

    Some fixed point results in the generalized convex metric spaces

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    In this study, we introduce a new three step iteration process and show that the iteration process converges to the unique fixed point by two theorems under different conditions of contractive mappings on the generalized G- convex metric spaces. Also, we investigate data dependence result for this iterative process in the generalized G- convex metric spaces

    Foreign Direct Investment and Growth Relationship in Georgia

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    This paper aims to investigate the empirically the impact of FDI on economic growth of Georgia over the period of 1997-2010. The Engle-Granger cointegration and Granger causality tests are used in order to analyse the causal relationship between FDI and economic growth. It is crucial to see the directions of causality between two variables for the policy makers to encourage private sectors. It is found that these two variables are cointegrated. Our empirical findings suggest that it is FDI that causes GDP in the case of Georgia

    Some new results on convergence, stability and data dependence in n-normed spaces

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    We introduce a new contractive condition and a new iterativemethod innnormed space setting. We employ both of these to study con-vergence, stability, and data dependence. The results presented here extendand improve some recent results announced in the existing literatur

    A Giant Dissecting Aneurysm of Ascending Aorta Following Aortic Valve Replacement

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    Ascending aortic dissection and aneurysm are rare but life-threatening complications after aortic valve replacement. Preoperative evaluation of risk factors such as aortic diameter, structural features of aortic wall, and associated diseases may decrease complication rate. We herein present analysis of risk factors of proximal aortic events following aortic valve replacement based on patient with giant dissecting aneurysm who underwent modified Bentall procedure

    Causality Relationship between GDP and Energy Consumption in Georgia, Azerbaijan and Armenia

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    This research aims to investigate the relationship between energy consumption and economic growth in Georgia, Azerbaijan and Armenia during the period of 1995–2009. The Engle-Granger cointegration and Granger causality tests are used in order to analyse the causal relationship between energy consumption and economic growth. It is crucial to see the directions of causality between two variables for the policy makers. For Georgia and Azerbaijan it is found that these two variables are not cointegrated. In case of Armenia these two variables are cointegrated. Accordingly, causality analysis is conducted for Armenia. The research outcomes reveal that there is unidirectional causality from per capita GDP to per capita energy consumption for Armenia. Keywords: Economic growth; Energy consumption; Granger causality JEL Classifications: O43; C2

    An appeal to the global health community for a tripartite innovation: an ‘‘Essential Diagnostics List,’’ ‘‘Health in All Policies,’’ and ‘‘See-Through 21st Century Science and Ethics"

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    Diagnostics spanning a wide range of new biotechnologies, including proteomics, metabolomics, and nanotechnology, are emerging as companion tests to innovative medicines. In this Opinion, we present the rationale for promulgating an ‘‘Essential Diagnostics List.’’ Additionally, we explain the ways in which adopting a vision for ‘‘Health in All Policies’’ could link essential diagnostics with robust and timely societal outcomes such as sustainable development, human rights, gender parity, and alleviation of poverty. We do so in three ways. First, we propose the need for a new, ‘‘see through’’ taxonomy for knowledge-based innovation as we transition from the material industries (e.g., textiles, plastic, cement, glass) dominant in the 20th century to the anticipated knowledge industry of the 21st century. If knowledge is the currency of the present century, then it is sensible to adopt an approach that thoroughly examines scientific knowledge, starting with the production aims, methods, quality, distribution, access, and the ends it purports to serve. Second, we explain that this knowledge trajectory focus on innovation is crucial and applicable across all sectors, including public, private, or public–private partnerships, as it underscores the fact that scientific knowledge is a co-product of technology, human values, and social systems. By making the value systems embedded in scientific design and knowledge co-production transparent, we all stand to benefit from sustainable and transparent science. Third, we appeal to the global health community to consider the necessary qualities of good governance for 21st century organizations that will embark on developing essential diagnostics. These have importance not only for science and knowledge based innovation, but also for the ways in which we can build open, healthy, and peaceful civil societies today and for future generations

    Inflammation and congenital heart disease associated pulmonary hypertension

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    WOS: 000370849200012PubMed ID: 25881225Background: Increased blood flow may trigger pulmonary arterial wall inflammation, which may influence progression of pulmonary artery hypertension in patients with congenital heart disease. In this study, we aimed to investigate the correlation between preoperative inflammation markers and pulmonary arterial hypertension. Methods: A total of 201 patients with pulmonary hypertension were enrolled in this study retrospectively; they had undergone open heart surgery between January 2012 and December 2013. Patients' preoperative C-reactive protein (CRP), neutrophil to lymphocyte ratio, red blood cell distribution width, pulmonary pressures, and postoperative outcomes were evaluated. Results: Patient age, neutrophil to lymphocyte ratio, red blood cell distribution width, and CRP were found to be significantly correlated with both preoperative peak and mean pulmonary artery pressures. These data were entered into a linear logistic regression analysis. Patient age, neutrophil to lymphocyte ratio, and CRP were found to be independently correlated with peak pulmonary pressure (P < .001, P < .001, and P =.004) and mean pulmonary artery pressure (P < .001, P < .001, and P = .001), whereas preoperative mean pulmonary artery pressure was found to be independently correlated with intensive care unit stay (P < .001). No parameter was found to be significantly correlated with extubation time and mortality. Eighteen patients had experienced pulmonary hypertensive crisis; in this subgroup, patients' mean pulmonary artery pressure and neutrophil to lymphocyte ratio were found to be significant (P = .047, P = .003). Conclusion: Preoperative inflammation markers may be correlated with the progression of pulmonary hypertensive disease, but further studies with larger sample size are needed to determine the predictive role of these markers for postoperative outcomes

    Chemical and physical modification of surfaces

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    WOS:000474195700003Surface modification processes can be categorized into two main parts: wet processes and dry processes. Wet surface modification techniques involve chemical and/or physical modification of a material's surface through the usage of various chemical agents that are either in liquid state during the processes or dissolved in a suitable solvent before their applications on the material's surface. Vapor deposition methods do not involve any wet material on a substrate surface. Furthermore, a vapor deposition process usually occurs under vacuum or purged conditions at which only precursor or carrier molecules exist. Therefore, vapor deposited coatings are quite pure. The impurities introduced into the coatings by the solvent may lead to impure films that may not be suitable for many end uses. This chapter discusses various kinds of vapor deposition processes used to deposit functional coatings onto various substrates and introduces some industrially important wet processes
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