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Carbon nanotubes(CNTs) aresomeof most valuable materials that have highest thermal conductivity.The thermal conductivity of individual carbon nanotubes is 2000 Wm −1 K −1 compared with the thermal conductivity 419 Wm −1 K −1 of silver.Therefore, carbon nanotubes have opened a new way for heat dissipation for high power electronic components, such as micro-processor, high brightness LED, etc. In this paper, we present the simulation results on heat dissipation for a high power electronic component using carbon nanotube nanofluids.
Fly ash is one of the numerous substance that cause air, water and soil pollution, disrupts ecological cycles and set off environmental hazards. Fly ash produced during the burning of powdered coal in thermal power plants is a hazardous waste. Disposal of this enormous amount of fly ash faces problem of huge land requirement, transportation, and ash pond construction and maintenance, which can be reduced by utilizing fly ash as a construction material for civil engineering structures. Soil stabilization has been implemented for improving soils, which have inadequate engineering properties. An attempt has been made in this present paper to highlight on the pollution hazards due to the disposal of fly ash into the environment and its utilization in civil engineering activities by conducting some laboratory investigations.
Lognormal distribution has wide applications in the analysis of failure time data, stock prices and rainfall. In this paper we derive Bayes estimator and credible regions for the mean of the lognormal distribution. We compare the coverage probability and length of the Bayes credible interval with the confidence interval obtained from the maximum likelihood estimator of the log location and scale parameters. The procedure is illustrated using the failure time data of locomotive control and stock price.
This study had investigated on the possibility of blood leaf( Iresine herbstii) as a soil pH indicator. An aqueous solution was prepared and settled to remove impurities. The pH is 4.6. The solution was tested in a 0-14 pH solutions to check on the color changes in the scale. The soil pH was tested using pH paper and pH meter. The soil pH was also tested using the blood leaf extract and the tests showed the same result. In conclusion, the aqueous extract of blood leaf can be used as soil pH indicator. This can benefit gardeners and flower growers because they can use it as fresh extract or can be kept even for many weeks in closed container.
Cognitive and affective attributes are the key in any educational endeavor. They seek to give an indication of the extent to which a learner would succeed in a given subject. Given this, the paper examined the cognitive and affective characteristics of History students of the University of Cape Coast, using primary data collected via focus group discussions with a sample of History students selected through random sampling technique. Discussions were transcribed into written text and coded into themes and sub-themes. Commonalities and differences in the key themes have been presented. The study revealed that knowledge traits characterized students' cognitive abilities. The study further found that students have a negative attitude and lack of interest towards History. The results from this study calls for the need to improve the transaction of the History curriculum in the University. It is, therefore, recommended that teachers adopt and use appropriate implementation
Satellite attitude estimation is one of the important processes in accomplishing a satellite mission. All the state estimation process requires dynamics model and filtering algorithm to estimate the state. Most of the estimation algorithm such as well-known Kalman filter and its variation assume the underlying noise in the dynamics model is Gaussian white noise. Hence, the objective of this paper is to investigate whether the noise in satellite attitude dynamics model in Near Equatorial orbit is Gaussian white noise process or not. This is important because if the assumption regarding the noise is incorrect, this will lead to unreliable and inaccurate estimation. In this paper, the noise is analyzed using normality characterizations and autocorrelation function. The result shows that the noise in the attitude dynamics at Near Equatorial orbit is not Gaussian white noise process.
- Aim: This paper aims to highlight the contraception related perceptions and practices of the women from an urban slum of Delhi. Methods: Data were gathered from a total of 201 pregnant women (belonging to lower income group) enrolled from a government run maternity clinic by the interview technique . Results: Data revealed that, at the time of conception, as high as 34% of the pregnancies were unwanted. Although the subjects had knowledge of contraception, the usage was very low (33%); and they considered contraception only as a means of limiting the family size which should be adopted once the family is ‗complete‘. Son preference, ignorance regarding importance of child spacing, limited control over personal lives and inhibitions/ fallacies regarding contraception were the main reasons behind far lower usage of the contraceptives. Also, lack of knowledge regarding the appropriate methods of contraception, their side-effects (if any), and the authentic source of...
Travelling Salesperson Problem is a problem where the user have to visit all the cities by using the shortest distance. It is an NP-hard problem in combinatorial optimization, important in operations research and theoretical computer science. TSP is a special case of the travelling purchaser problem .By representing this problem in graphical method we see that it is nothing but a complete graph where user have to visit all the nodes using the shortest distance. Scientist have found that biological ant have an excellent behavior by which they always choose the shortest way between the source and the destination although there are several ways between them. Using these behavior of the biological ant we describe an artificial ant colony capable of solving the traveling salesman problem (TSP). Ants of the artificial colony are able to generate successively shorter feasible tours by using information accumulated in the form of a pheromone trail deposited on the edges
The purpose of this research paper to highlight the issues related to management of human resources when work culture in the organisation changes. This paper focuses on Cadbury Company stressing on the business strategies followed by it to successfully manage change management. In every organisation human resources are the key assets as they involve in planning, organising, directing and controlling human activities of staffing, compensation, development and maintenance. This paper also highlights the reasons behind the Cadbury Company’s strategic human resource management policies like decentralisation, decoupling, management of cultural differences and so on. This will help the marketers and human resource managers in identifying the approaches to manage human resources and business strategies and implement the same in changing business scenario. Since, it is the urgent need of every organisation to understand that human resources are the most indispensable tool and w
“Better governance leads to better management”. This paper shall be useful for increasing the knowledge and awareness of how critical and crucial corporate governance is, especially after the financial crisis that led to a recession in the worldwide economy. This paper is an insight for corporate governance and risk management strategies adopted in different insurance industries across the globe. Because corporate Governance is not only mandatory but also recommended so that companies adhere to best practices. It will correlate the theories formulated for corporate governance and actual practices followed in insurance companies. This paper will brief out the existing literature on this topic along with the results derived from these studies. Finally, it will conclude with recommendations and suggestions based on existing studies.