Fishery resource management with migratory prey harvesting in two zones- delay and stochastic approach.

In this work, we looked at a two-zone aquatic habitat where both prey and predators can access the zones. The prey alternates between two zones at random. The growth of prey in the absence of a predator is believed to be logistic in each zone. The inner steady state is determined. Around the interior steady state, the deterministic model's local and global stability is investigated. Furthermore, a stochastic stability study is performed in the neighbourhood of a positive steady state, using analytical estimates of population mean square fluctuations to investigate the system's dynamics in the presence of Gaussian white noise.

A Review Article on Wireless Sensor Networks in View of E-epidemic Models.

Epidemic simulations have recently been used to model the dynamics of malicious codes in the network of wireless sensors. This is because of its open existence, which offers a simple target for malware attacks aimed at disrupting network operations or, worse, causing complete network failure. The Susceptible-Exposed-Infectious-Quarantined-Recovered-Susceptible with Vaccination compartments models like SIR-M, SEIRV, SEIQRV, SEIRS, SITR, SIR with delay are studied by various authors and some of such models that characterize worm dynamics in WSN. After a concise presentation of the wireless sensor network, some primary research consequences of e-pandemic models (of various researchers) are given and assessed. At that point the uses of wireless sensor network in the clinical wellbeing, agribusiness, and military, space and marine investigation are laid out. What's more, we break down the upside of wireless sensor network in these sectors. In this review article, we sum up the fundamental factors that influence the uses of wireless sensor networks in view of e-epidemic models and revived some epidemic models and also discussed some conceivable future works of different epidemic wireless sensor models.

Chaotic dynamics of a three species prey-predator competition model with bionomic harvesting due to delayed environmental noise as external driving force.

We consider a biological economic model based on prey-predator interactions to study the dynamical behaviour of a fishery resource system consisting of one prey and two predators surviving on the same prey. The mathematical model is a set of first order non-linear differential equations in three variables with the population densities of one prey and the two predators. All the possible equilibrium points of the model are identified, where the local and global stabilities are investigated. Biological and bionomical equilibriums of the system are also derived. We have analysed the population intensities of fluctuations i.e., variances around the positive equilibrium due to noise with incorporation of a constant delay leading to chaos, and lastly have investigated the stability and chaotic phenomena with a computer simulation.

A part of life. The Hindu view.

PIP: A leading social anthropologist and founder of the Center for Advanced Studies in Sociology at Delhi University presents a Hindu view on teachings about birth and population control. The article states that Hinduism accepts the sacred scriptures of the "shruti" whom are respected authorities revealed by God to man and the "smrities" which are divine recollections of revealed truth. Shruti have greater authority, and divine works include the vedas or hymns of the Indo-Aryans to their gods. Dharma shastras are smriti and provide legal opinion on religion and social matters. Learned men interpret these scriptures for the common people. The Hindu scriptures do not mention anything contrary to birth control. Sex is an accepted way of life without prudery. Householdership is said to be one of the universal stages of life. The Kama Sutra, written by Vatsyayana in the early fourth century, and other works digress on the celebration of love. Human lovemaking is celebrated in panels appearing in the Khajuraho temples in Madhya Pradesh and in temple chariots in south India. Ayurvedic medicine and literature on erotics explains many devices for preventing conception. High Hindu castes are reported in this article as placing great emphasis on patrilineage and the need for sons to continue the male line. Adoption or limiting family size to 1-2 children is resorted to when there is no apparent male heir. This emphasis on sons contributes to female infanticide and neglect of daughters. The belief in "karma" or reincarnation was once considered to be antagonistic to the practice of contraception and birth control. Education and literacy have increased the acceptance of modern contraception. Awareness of population growth as a potential problem is prevalent among educated Hindus. The government of Mysore was the first in the world to establish a birth control clinic. The National Planning Committee of the Indian National Congress advocated family planning and birth limiting since 1935.^ieng