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India is indisputably on the advancing front of progress where its hefty natural resources serve the greatest assets to reckon with. The progress of any country is directly dependent upon the quality and quantum of available natural resources with it. For a country like India having vast continentality, these natural resources are catalysts in programs associated with human development and sustainability. However, with the enormous rise of population and dwindling resource pools, the society suffers from critical disturbances in internal security across the country’s length and breadth. There exists a proven causal relationship of a significant association between shocks to natural resources and the intensity of civil conflicts in a region. The episodes resulting from a disrupted state of internal security pose a massive challenge to government functionaries inkeeping pace with worldwide socio-economic development. The obvious choice of Natural Resource Management (NRM) provides one of the promising keys to handle this menace effectively. Thepresent work explores this meticulous strategy of assuring internal security through an improved pragmatism and judicious use of natural resources in states marred with recurring incidences of chaos and human violence. The planning and monitoring of internal security with peoples’ stake depend evidently upon the technical capability of government in handling resources with a vision for Possibilism. NRM, thus, conceptualize a framework of governance where exploitation of resources and sustenance of internal security in India go hand-in-hand prudently. The paper attempts to resolve a deteriorating internal security situation by strategizing a development-cumsustainability approach to keep a large nation safe and secure.

The world with vast continental landmasses and having diversified topographic structures is bound to face a multiplicity of natural hazards on local to regional scale. Natural events of such adverse effects on human property and life have led us to conceptualize these as disasters. The trend analysis of the last 100 years over the earth reveals the fact that much has been changed by natural disasters with an average occurrence of 7 in 1914 to 341 disasters in 2014 per continent on a global scale. The present study focuses on how frequent disasters have continued to harm our environment and up to what extent threatened the sustainability of humanity in the last ten decades. The available data on past natural calamities have been studied to gauge the intensity and effects of these hazards and realizing a better way to mitigate them by educating all for disasters and disaster management as this will ensure timely disaster preparedness in general. Each disaster occurs at the backdrop of some science in it. This necessitates natural disasters as a probable area of concern which awaits intrinsic study and investigations with enough scientific aptitude and inquiry in science education of our country. The origin of such events of unforeseen calamities is set in one country, but its effects on howsoever mild or severe are widespread trans-nationally. To understand, mitigate, and to manage them finally lies with the scientific community at our disposal.

Western Gujarat is one of the regions of India which has suffered from frequent drought events once every three years. High monsoonal variability on account of erratic rainfall, over-exploited aquifers, and poor groundwater recharge conditions in basaltic terrain are few reasons for drought spells over the study area. The study focuses on understanding more on drought regime and its patterns in the seven districts of Gujarat and its close linkages with the partial arid state therein using selected indicators of SPI, SPEI, rainy days, and daily rainfall intensity. However, if there persist events like drought or famine due to scanty or irregular rainfall, a study is deemed necessary to identify, confirm and characterize drought. The present study is largely focusing on such a scene where drought impacts over the Saurashtra region are assessed by evaluating climatic data of rainfall and temperature for each year of study. The deficit rainfall regime is explored for occurrences of a drought of varying severity between 1969 and 2018. The positive and negative patterns of the water regime are explored, and the anomalies are detected, signifying relationships among rainy days and drought-affected areas. Drought dynamics is detected for 17 years of drought occurrences with three years- 1972, 1987, and 2012 as major drought years and extreme drought was found to be widespread during post-monsoon months. The current work focuses on identifying and classifying drought spells with their severity extent for studying impacts of drought on the hydrological regimes in a longer perspective with SPI values below −1.5 in western India.

In this paper, an efficient iterative method for design of near-perfect reconstructed transmultiplexer (NPR TMUX) is proposed for the prescribed roll-off factor ( RF ) and stop band attenuation ( A s ). In this method, windowing technique has been used for the design of prototype filter, and different modulation techniques have been exploited for designing multi-channel transmultiplexer (TMUX). In this method, inter-channel interference ( ICI ) is iteratively minimized so that it approximately reduces to ideal value zero. Design example is given to illustrate the superiority of the proposed method over earlier reported work. A comparative study of the performance of different modulation techniques for designing TMUX is also presented.