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Shillong, India

Dutta J.,North - Eastern Hill University | Khyllep W.,St Anthonys College | Syiemlieh E.,St Anthonys College
European Physical Journal Plus | Year: 2016

In the evolution of late universe, the main source of matter are Dark energy and Dark matter. They are indirectly detected only through their gravitational manifestations. So the possibility of interaction with each other without violating observational restrictions is not ruled out. With this motivation, we investigate the dynamics of DGP braneworld where source of dark energy is a scalar field and it interacts with matter source. Since observation favours phantom case more, we have also studied the dynamics of interacting phantom scalar field. In non-interacting DGP braneworld there are no late-time accelerated scaling attractors and hence cannot alleviate the coincidence problem. In this paper, we shall show that it is possible to get late-time accelerated scaling solutions. The phase space is studied by taking two categories of potentials (exponential and non-exponential functions). The stability of critical points are examined by taking two specific interactions. The first interaction gives late-time accelerated scaling solution for phantom field only under exponential potential, while for second interaction we do not get any scaling solution. Furthermore, we have shown that this scaling solution is also classically stable. © 2016, Società Italiana di Fisica and Springer-Verlag Berlin Heidelberg. Source


Dey S.,St Anthonys College
Indian Journal of Community Health | Year: 2014

Background: Despite the fact that contraceptive usage has increased over a period of time, there exists a Knowledge Attitude and Practice-gap regarding contraception. There are multiple reasons for not using any family planning methods, current study attempts to explore these reasons. Aims: To study the family planning practices/methods among the married women of reproductive age groups. Study Design: Community-based cross-sectional study. Study Subjects: The Women of reproductive age groups adopting family planning methods & those residing in urban slums of Shillong city. Sample size: 1417. Study Period: April 2010 to March 2012. Sampling Technique: Two-stage random sampling. Results: Overall, the contraceptive prevalence rate (CPR) was 38. The contraceptive use is high among women who have two to three surviving children (37.1 percent). Majority of the women who were adopting any of the family planning method belonged to the age group 18-24 years. Women's education and occupation are important determinants that demonstrate highly significant positive relationships with any contraceptive use in the slum-dwelling women of Shillong city. Sex composition of living children also appeared to be significant determinant factor for contraceptive use. Monthly family income is also an important determinant of contraceptive use in slums of Shillong city. Conclusions: The elder women were more reluctant in contraceptive use than their younger counterparts. Sterilization is the most accepted one among all the contraceptive methods. Source


Sharan R.N.,North - Eastern Hill University | Odyuo M.M.,St Anthonys College | Purkayastha S.,G C College
Mini-Reviews in Organic Chemistry | Year: 2011

Free radicals (FR) are chemical species of significant importance to biological systems. FRs are generated by endo- as well as exogenous factors. Biological systems are equipped with appropriate metabolic pathways to remove cellular FR as well as repair the damages caused by them. Their cellular/physiological load profoundly influences the metabolism, physiology and overall well being of biological systems. Therefore, they are implicated in cellular degenerative processes and in patho-physiology, including carcinogenesis and ageing. The review shall attempt to give a generalized overview of FR chemistry, especially to the biologically important oxygen free radicals (OFR) and reactive oxygen species (ROS). The review shall also discus the OFR/ROS biology to get an overview of the induced damage at molecular, cellular and organismal levels in order to give a perspective of their influences on the genomic integrity, cellular microenvironment and physiology with special reference to human health. © 2011 Bentham Science Publishers. Source


Tham M.J.,St Anthonys College
Proceedings - 2012 3rd National Conference on Emerging Trends and Applications in Computer Science, NCETACS-2012 | Year: 2012

Several tagsets have been developed for Indian languages belonging to the Indo-Aryan and Dravidian families. This is because the major chunk of India's spoken language belongs to these categories. Khasi, on the other hand, belongs to the Austro-Asiatic family and is spoken primarily in the state of Meghalaya. To the best of my knowledge, language technology for Khasi is practically nonexistent and work on computational linguistic for the language is very scant. This proves to be a challenge when an attempt is made to provide access to technology using language when the basic tools needed are not available. There exists a common Part of Speech Tagset framework for Indian languages (IL-POSTS) covering the morphologically rich Indian languages under the Indo-Aryan and Dravidian families. However, in this paper the EAGLES guidelines are used for developing the Khasi tagset due to the natural infinity of the language to English. This is obvious from the script used, which is the Roman script and the word order is also primarily SVO. © 2012 IEEE. Source


Das A.,St Anthonys College
Proceedings - 2012 3rd National Conference on Emerging Trends and Applications in Computer Science, NCETACS-2012 | Year: 2012

Sensor association rules have been found to be very useful for improving the quality of service, energy conservation, resource management, etc. in wireless sensor networks (WSN). Most of the association rule mining algorithms for sensor networks require the behavioral data, which describes the sensor activities, to be sent to the central node (sink node) by the sensors. Then, the sink node creates the sensor database and applies different algorithms to find association rules from the sensor database. In this paper, we propose an in-network mechanism to find frequent sensor patterns in the sensors themselves. So, the sensors send only the frequent senor patterns to the sink, not the sensor activity sets. © 2012 IEEE. Source

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