IIT-Kharagpur Current Affairs
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IIT Kharagpur researchers devise decision support system (DCS) to help maximise LPG connections in BPL households
Researchers from IIT Kharagpur have devised decision support system (DCS) to help maximise LPG connections in BPL (below poverty line) households under Pradhan Mantri Ujjwala Yojana. It is a first of its kind for analysis of national level energy policy. This kind of DSS can be developed for various central and state level policies for various commodities like agricultural commodities, solar panels distributions and so on.
Decision support system (DSS)
It is computer programme that helps in making sound rational decisions using mathematical programming and operation research techniques. It can provide exact values of important parameters over prescribed policy time period, which in turn will help to take important measures to ascertain proper functioning (monitoring) of policy towards the desired goal. It uses mixed integer linear programming to mathematically formulate policy using input parameters, decision variables and their relationships. This mathematical model has found optimum number of total BPL connections required in region, number of dealerships that need to be commissioned in region over policy time frame. The sensitivity analysis with this mathematical model can easily change in decision variable with respect to change in a parameter. With this, it is easy to predict not only how the number of household connections that can be increased but also the critical region that contributes most in each zone of LPG distribution.
According to recent study conducted by IIT-Kharagpur, River Ganga has witnessed unprecedented low levels of water in several lower reaches in last few summer seasons. The study was carried out under IIT-KGP Science and Heritage Initiative (SANDHI) Initiative, which focuses on river systems and its relationship with settlement system. It had used combination of satellite images of groundwater levels of Ganga, numerical simulations and chemical analyses to draw the conclusion.
Highlights of Study
Drying of Ganga River in recent years during summer seasons is possibly related to groundwater depletion in Gangetic aquifers. The decline of groundwater inflow (base flow) is also impacting health of river. Present day base flow to Ganga from adjoining aquifers may be third or more of total river water volume in pre-monsoon months. The base flow might have dipped by 50% from beginning of irrigation-pumping phase in 1970s. In forthcoming summers, for next 30 years, groundwater contribution to river Ganga will continue decreasing. This trend can lead to disastrous effect on riverine ecology and lead to food scarcity for 115 million people in Ganga basin.
Significance of Study: It is of interest to hydrology, global change community and policymakers. It can help general public understand wider implications of groundwater depletion. It also brings out scientific reasons for the decreased flows of the river Ganga, especially in the lower reaches. The findings will be extremely helpful in providing quantitative data for future planning of water resources projects in Ganga basin.