Volume 6 | Issue 3 |

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Creative Commons Attribution 4.0 and The Open Definition

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prises as a mother ensures her kids against the en

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Creative Commons Attribution 4.0 and The Open Definition

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The emergence of new communities is a key topic of study in the social sciences. While much research focuses on how individual social networks contribute to forming a single community, we introduce a fresh, community-centric perspective. Our approach emphasizes that new communities arise within a landscape of pre-existing ones. By analyzing the previous community affiliations of early members, we uncover the process through which communities emerge. For our analysis, we use Reddit, a platform hosting tens of thousands of user-generated communities. Our dataset spans over a decade, covering user posting activity from Reddit's inception to April 2017. We develop a computational framework to construct genealogy graphs that map relationships between communities. This enables us to conduct the first large-scale analysis of such genealogy structures. Interestingly, fundamental graph properties--such as the number of parent communities and the highest parent connection strength--stabilize quickly, despite the rapid increase in the number of communities over time. Additionally, we explore the relationship between a community's origins and its future growth. Our findings reveal that strong connections to parent communities correlate with a higher likelihood of future expansion, reinforcing the role of pre-existing structures in the development of new communities. Lastly, at the individual level, we analyze early adopters and their characteristics. We discover that having a diverse engagement history across multiple communities is the strongest predictor of an individual becoming an early member of a newly formed community. This study has been undertaken to investigate the determinants of stock returns in Karachi Stock Exchange (KSE) using two assets pricing models the classical Capital Asset Pricing Model and Arbitrage Pricing Theory model. To test the CAPM market return is used and macroeconomic variables are used to test the APT. The macroeconomic variables include inflation, oil prices, interest rate and exchange rate. For the very purpose monthly time series data has been arranged from Jan 2010 to Dec 2014. The analytical framework contains.

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Creative Commons Attribution 4.0 and The Open Definition

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Community Evolution, Social Networks, Genealogy Graphs, Online Communities, Network Analysis

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Creative Commons Attribution 4.0 and The Open Definition

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This ignition delay of a dual fuel diesel engine analyzed experimentally the effect of hydrogen, producer gas and combination of producer gas and hydrogen paper are presenting in this paper. The experiments were conducted on a 4-cylinder turbo-charged and intercooled 62.5 kW gen-set diesel engine running at constant speed of 1500 RPM. The experiments were conducted with different quantity of hydrogen and producer gas as a secondary fuel with diesel as pilot fuel at wide variety of load conditions. It was pragmatic that, when only 30% of hydrogen is used as secondary fuel ignition delay increased by 20CA at lower load condition. Furthermore, by 50% of hydrogen substitution maximum reduction in ignition delay was observed at 80% load condition. By 50% producer gas substitution the ignition delay is increased by 60CA at 80% load condition. In mixed fuel mode (PG+H2), it was found that of all the different mixture combinations verified, the ignition delay are more than pure diesel operation but better as compared to producer gas alone.However, mixture combination of PG:H2=(60:40) is found to be the most suitable one at which ignition delay is in good comparison to that of pure diesel operation.Further, it is experiential that the ignition delay of dual fuel engine depends not only on the type of gaseous fuels and their concentrations but also on charge temperature, pressure and oxygen concentration.

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Creative Commons Attribution 4.0 and The Open Definition

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Dual fuel engine, Alternative fuels, Hydrogen, Producer gas, Ignition delay.

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Creative Commons Attribution 4.0 and The Open Definition

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“E-GOVERNANCE IN INDIA: CONCEPT, INITIATIVES AND ISSUES”

Licence: creative commons attribution 4.0

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Creative Commons Attribution 4.0 and The Open Definition

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“E-GOVERNANCE IN INDIA: CONCEPT, INITIATIVES AND ISSUES”

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Creative Commons Attribution 4.0 and The Open Definition