In performance-based seismic design, ground-motion time histories are needed for analyzing dynamic responses of nonlinear structural systems. However, the number of strong-motion data at design level is often limited. In order to analyze seismic performance of structures, ground-motion time histories need to be either selected from recorded strong-motion database, or numerically simulated using stochastic approaches.

Rising focus on the increasing awareness of existing solar systems, ambitious plans announced on the amount of solar power generation over the next few years, cancellation of subsidies over a considerable period and their reintroduction, and of course, the “solar scam” are some of the issues at the forefront of green energy in India.

The objective of the study is to assess the overall effect of vitamin D supplementation on risk of acute respiratory tract infection, and to identify factors modifying this effect.

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The prevailing paradigm of host-parasite evolution is that arms races lead to increasing specialisation via genetic adaptation. Insect herbivores are no exception and the majority have evolved to colonise a small number of closely related host species. Remarkably, the green peach aphid, Myzus persicae, colonises plant species across 40 families and single M. persicae clonal lineages can colonise distantly related plants. This remarkable ability makes M. persicae a highly destructive pest of many important crop species.

The legacy and reach of anthropogenic influence is most clearly evidenced by its impact on the most remote and inaccessible habitats on Earth. Here we identify extraordinary levels of persistent organic pollutants in the endemic amphipod fauna from two of the deepest ocean trenches (>10,000 metres). Contaminant levels were considerably higher than documented for nearby regions of heavy industrialization, indicating bioaccumulation of anthropogenic contamination and inferring that these pollutants are pervasive across the world’s oceans and to full ocean depth.

One consequence of rising spring temperatures is that the optimum timing of key life-history events may advance. Where this is the case, a population's fate may depend on the degree to which it is able to track a change in the optimum timing either via plasticity or via adaptation. Estimating the effect that temperature change will have on optimum timing using standard approaches is logistically challenging, with the result that very few estimates of this important parameter exist.

There has been a progressive deepening of winter convection in the Labrador Sea since 2012, with the individual profile maximum depth exceeding 1800 m since 2014 and reaching 2100 m in 2016. This increase, during repeated positive phases of the winter North Atlantic Oscillation (NAO), resembles that during the formation of the record depth (2500 m) Labrador Sea Water (LSW) class in 1987–1994, attributed to repeated positive NAO forcing having provided critical preconditioning. The 2012–2016 LSW class is one of the deepest and most persistent ever observed (back to 1938).

Recent evidence suggests that a significant number of Mahatma Gandhi National Rural Employment Guarantee Act workers are not paid at all for their work. An analysis of this phenomenon revealed that the increasing dependence on technology in the implementation of the act is creating new hurdles for wage payments.

The government wants to raise solar power generation capacity from the current 8 GW to 100 GW by 2022. How will such an aggressive solar programme impact India’s electricity distribution companies? How will it affect the cost, availability and quality of electricity for consumers? Does the pace of solar adoption being pushed by the government serve the public interest?

The protest of Tamils against the ban on Jallikattu is a trigger. The pent-up anger against the successive policies of the central government and corporate encroachment of resources is the main cause of massive turnout in the protests. The protests displayed the limits of the Hindu right’s attempts to make inroads into the state’s politics by valorising Tamil language and culture. The protests indicate a continuity of Tamil politics with renewed strength through social media activism.

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