Commensal –decay host ecosystem with a constant replenishment to the host species

The present paper deals with an analytical investigation on two species commensal-host ecological model with the host has Mortality rate and is being harvested (immigrated) at a constant rate. Further, both the species are with limited resources. This model is characterized by a couple of first order non-linear ordinary differential equation. All possible, two equilibrium points are identified and a stability criterion for it is discussed. Solutions for the linearized perturbed equations are found and results are presented

Iso-array rewriting P systems with context-free iso-array rules

A new computing model called P system is a highly distributed and parallel theoretical model, which is proposed in the area of membrane computing. Ceterchi et al. initially proposed array rewriting P systems by extending the notion of string rewriting P systems to arrays (2003). A theoretical model for picture generation using context-free iso-array grammar rules and puzzle iso-array grammar rules are introduced by Kalyani et al. (2004, 2006). Also iso-array rewriting P systems for iso-picture languages have been studied by Annadurai et al. (2008). In this paper we consider the context-free iso-array rules and context-free puzzle iso-array rules in iso-array rewriting P systems and examine the generative powers of these P systems

Performance analysis of FSO using relays and spatial diversity under log-normal fading channel

The performance analysis of free space optical communication (FSO) system using relays and spatial diversity at the source is studied in this paper. The effect of atmospheric turbulence and attenuation, caused by different weather conditions and geometric losses, has also been considered for analysis. The exact closed-form expressions are presented for bit error rate (BER) of M-ary quadrature amplitude modulation (M-QAM) technique for multi-hop multiple-input single-output (MISO) FSO system under log-normal fading channel. Furthermore, the link performance of multi-hop MISO and multi-hop single-input and single-output (SISO) FSO systems are compared to the different systems using on-off keying (OOK), repetition codes (RCs) and M-ary pulse amplitude modulation (M-PAM) techniques. A significant performance enhancement in terms of BER analysis and SNR gains is shown for multi-hop MISO and multi-hop SISO FSO systems with M-QAM over other existing systems with different modulation schemes. Moreover, Monte-Carlo simulations are used to validate the accuracy and consistency of the derived analytical results. Numerical results show that M-QAM modulated multi-hop MISO and multi-hop SISO FSO system with relays and spatial diversity outperforms other systems while having the same spectral efficiency of each system.Comment: 4 pages, 4 figures, 4th International Conference on Electrical Energy Systems (ICEES), Feb. 7-9, 2018, SSNCE, Chennai, TN, INDI

Innovative Teaching and Learning

The biggest challenge any teacher faces is capturing the students’ attention, and putting across ideas in such a way that it stays with them long after they have left the classroom. For this to happen, classroom experience should be redefined and innovative ideas that make teaching learning methods more effective should be implemented. So here are some innovative ideas that will help teachers reinvent their teaching methods and make their classes interesting. The use of innovative methods in educational institutions has the potential not only to improve education, but also to empower people, strengthen governance and galvanize the effort to achieve the human development goal for the country. The purpose of this paper is to suggest useful innovative teaching methods which could easily be imparted knowledge to the students

Assessment and seasonal variations of communicable diseases: 3 year study

Background: Communicable diseases remain the leading cause of mortality and morbidity in developing countries as the disease patterns change constantly due to seasonal variation. The mechanisms responsible for the epidemiological consequences of this seasonal variation are poorly understood. Analysis of proper data of communicable diseases is required to determine the current burden as well as seasonality. The objectives of this study are to assess the current burden of various communicable diseases at Sir Ronald Ross Institute of Tropical and Communicable diseases (SRRIT&CD), to know the seasonal variations and to suggest preventive and curative measures.Methods: All patients who were admitted at this hospital over a period of three years (January 2011 to December 2013) have been studied. The patient data was documented for each case and further categorized into viral fevers, acute diarrheal diseases, enteric fever, malaria, rabies, measles, mumps, chickenpox, diphtheria, food poisoning, tetanus and pertussis. The incidence and seasonal variations for these diseases were analyzed.Results: Results showed that a total of 34,981 had been treated at the inpatient departments from the year 2011 to 2013. It was observed that communicable diseases constituted about 85% (30,082) of the total disease burden with viral infections being the commonest. Most of the diseases were observed to have a seasonal variation. The most common disease identified was viral fever 8713 (28.96%), secondly acute diarrheal diseases 7965(26.52%) followed by enteric fever 2958 (9.83%) and malaria 2443(8.12%). The least common were Rabies 80 (0.26 %) and pertussis 37 (0.12%). Outbreaks of Measles and Diphtheria were also noted in this study.Conclusions: Many diseases have a seasonal variation and the burden of these diseases could be reduced if we device measures to detect the changes in their trend through the implementation of surveillance programs. The knowledge of the burden of these would also assist the health administrators in allocation of the resources.