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Sultornsanee S.,University of the Thai Chamber of Commerce | Duvvuru A.,University of the Thai Chamber of Commerce | Radhakrishnan S.,Symbiosis Institute of Management Studies | Chowdhary H.,Symbiosis Institute of Management Studies | Kamarthi S.,Northeastern University
Procedia Computer Science | Year: 2013

Correlation based Minimum Spanning Tree (MST) networks are instrumental in capturing the basic workings of a system and have been accepted for use in the analysis of stock and currency exchange markets. Research in network analysis of financial markets shows that although correlations underlying MST networks capture essential information, they do not faithfully capture dynamic behavior embedded in the time series data of financial systems. We present a new Phase Synchronization (PS) based method for establishing correlations between nonlinear time series data, prior to constructing the MST. In this method, time series data generated by each entity in a system is transformed to a recurrence plot and the recurrence plots are further transformed to trajectories in phase space. For each pair of trajectories, phase synchronization (PS) is quantified based on the degree of phase locking observed. Distances for the MST are then computed as a function of the PS between each entity pair. We demonstrate the method using Thailand Baht exchange rates with 82 countries from 2004 to 2012. We further analyze and compare networks constructed using the PS method (PS-MST) and the existing cross-correlation method (CC-MST), to study the differences in market dynamics captured by these methods. © 2013 The Authors. Published by Elsevier B.V. Source


Duvvuru A.,University of the Thai Chamber of Commerce | Radhakrishnan S.,Symbiosis Institute of Management Studies | More D.,Symbiosis Institute of Management Studies | Kamarthi S.,Northeastern University | Sultornsanee S.,University of the Thai Chamber of Commerce
Procedia Computer Science | Year: 2013

Keyword networks, formed from keywords occurring in scholarly articles provide a useful mechanism for understanding academic research trends. In keyword networks, keywords are represented as nodes and a link is formed between a pair of keywords if they appear in the same article. Each link is assigned a weight, representing the number of co-occurrences of the pair in different articles. A statistical and visual analysis of the structural and temporal characteristics of such networks reveals the organizing pattern and the evolution of keywords. In this study we analyse the difference between structured keyword system and unstructured keyword system. We use keywords from two prominent business management journals from USA and India and analyse the corresponding keyword networks. Our results indicate that the network characteristics of structured keyword system are more suitable than unstructured keyword system to analyse research trends and bring forth the emerging areas and popular research methods. The adoption of structured keyword system will aid researchers and funding agencies to optimize their decision on the use of research funding. © 2013 The Authors. Published by Elsevier B.V. Source


Pandey S.,Symbiosis Institute of Management Studies | Pande V.,Symbiosis Institute of Management Studies | Singh P.R.,Symbiosis Institute of Management Studies
International Journal of Applied Engineering Research | Year: 2015

Glass ceiling, a political term, is used to donate a phenomenon that says that there are certain barriers that prevent women from rising to the upper rungs of the corporate ladder. This effect happens irrespective and regardless of their qualifications or achievements. While, there is no doubt that women hold management positions, a very less number have made the jump to top-level senior management positions. The purpose of the paper is to analyse what exactly constitutes glass ceiling and why it occurs. It also aims to highlight current industry trends and how hard (or easy) women find it to reach the top management positions in companies. Objective of the study was that given the changing dynamics of the workplace demography in the recent times, it is imperative that we understand the reason behind this change and its effect. We studied and analysed research papers, review papers and journal articles to summarise and write our review paper. The paper finds that despite considerable development in the sphere of reducing gender discrimination there is still considerable literature proving the existence of glass ceiling. The implication of the paper is that it may take few more years to eradicate the concept of glass ceiling. Effective steps need to be taken to remove the obstacles and prejudices that women face even today to quicken the dismantling of glass ceiling. © Research India Publications. Source

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