Methodology on valuation of ecosystem services of coral reefs

Methodology on valuation of ecosystem services of coral reef

What does monogamy in higher powers of a correlation measure mean?

We examine here the proposition that all multiparty quantum states can be made monogamous by considering positive integral powers of any quantum correlation measure. With Rajagopal-Rendell quantum deficit as the measure of quantum correlations for symmetric 3-qubit pure states, we illustrate that monogamy inequality is satisfied for higher powers of quantum deficit. We discuss the drawbacks of this inequality in quantification of correlations in the state. We also prove a monogamy inequality in higher powers of classical mutual information and bring out the fact that such inequality need not necessarily imply restricted shareability of correlations. We thus disprove the utility of higher powers of any correlation measure in establishing monogamous nature in multiparty quantum states.Comment: 7 pages, 1 figure, 1 table; comments welcom

புவி வெப்பமாகி கொண்டிருக்கறத் தெரியுமா ? (ClimEd Series:1D)

புவி வெப்பமாகி கொண்டிருக்கறத் தெரியுமா ? (ClimEd Series:1D

காலநிலை மாற்றமும் கொள்கைகளும் (ClimEd Series:4D)

காலநிலை மாற்றமும் கொள்கைகளும் (ClimEd Series:4D

Tunability of the spin reorientation transitions with pressure in NdCo5

We present pressure-dependent magnetization measurements carried out in the domain of the spin reorientation transitions (SRTs) of a NdCo5 single crystal. The application of a hydrostatic pressure leads to a shift in the SRTs to higher temperatures. This shift is found to be very sensitive to pressure, with the SRT temperatures increasing at a rate of ≈17 K/GPa. To explain the experimental results, we have also performed first-principles calculations of the SRT temperatures for different applied strains, which corroborate the experimental findings. The calculations attribute the pressure dependence of the SRTs to a faster weakening of the Co contribution to the magnetocrystalline anisotropy with pressure compared to the Nd contribution

Insulator–metal transitions in Pr0.7Ca0.3MnO3 induced by a magnetic field

A magnetic field induced insulator to metal transition has been observed in both polycrystalline and single crystals samples of Pr0.7Ca0.3MnO3. Application of a magnetic field leads to a first-order phase transition from an insulating to a conducting state at low temperatures. The hysteresis associated with this transition allows the resistivity at 4 K to be varied by more than eight orders of magnitude depending on the field history of the sample

Single crystal growth, structure and magnetic properties of Pr2Hf2O7 pyrochlore

Large single crystals of the pyrochlore Pr2Hf2O7 have been successfully grown by the floating zone technique using an optical furnace equipped with high power Xenon arc lamps. Structural investigations have been carried out by both synchrotron X-ray and neutron powder diffraction to establish the crystallographic structure of the materials produced. The magnetic properties of the single crystals have been determined for magnetic fields applied along different crystallographic axes. The results reveal that Pr2Hf2O7 is an interesting material for further investigations as a frustrated magnet. The high quality of the crystals produced make them ideal for detailed investigations, especially those using neutron scattering techniques.Comment: Accepted for publication in J. Phys.: Condens. Matte

Impact of Cyclone Vardha on fishers and their livelihoods

The Vardah Cyclone struck Chennai, Kanchipuram and Thiruvallur coastal districts of Tamil Nadu on 12th December 2016 and impacted nearly 25000 fisher families. Wind speed of 140 km/hour and tidal waves inundated the low lying areas of coastal villages causing very heavy damage

Stakeholders perception of Indo-ASEAN Free Trade Agreement on Indian Fisheries Sector

Exports augment the economy with an increase in international trade, acceleration in output and provide an engine for growth. Free trade agreement (FTA) with huge economies provides ample scope for the integration of trade. In this context, FTA with ASEAN is a big boost for various sectors of lndian economy. It is a major step in lndias "Look East" policy in reducing its dependence on trade with U.S. and E.U and will strengthen its regional dynamics on trade. The ASEAN-India FTA will see tariff liberalization of over 90 percent of products traded between the two dynamic regions and would eliminate tariffs for about 4000 products (which include electronics, chenlicals, machinery, textiles, agriculture and fisheries) out of which duties for 3200 products will be reduced by December 2013, with brought down to zero or near zero levels by December 2016. This agreement is supposedly believed to have a huge impact on lndian fisheries sector too.The different stake holders are to perceive differently to the agreements. There are apprehensions to the primary stakeholders the fishermen that the cheaper imports of local popular varieties such as sardines, mackerels, other lesser pelagic, cephalopods, crustaceans, demersal etc. which overlaps with the fish landings will spell doom to fishing communities. On the other hand the consumers, processors and exporters will be at advantage due to the ready availability of the fish to suit their taste and preferences and th; capacity utilization of the processing plants and reaping in on the export economies of the scale. In this context, a detailed study on the impact of the FTA on lndian fisheries is warranted. This paper critically reviewed and analysed the perceptions on the impact of ASEAN agreement on the different stakeholders viz., fishermen, consumers, exporters, processors, market functionaries and the resources. The study involved sampling of stakeholders which included 240 consumer respondents, 50 exporters and processors and 30 markets functionaries in wholesale and retail markets in Cochin. The possible impact on the primary stakeholders (traditional fishers) was analyzed using a case study approach based on the possibility of oil sardine imports to lndia by ASEAN countries. The analysis on the perception of the stakeholders indicated that the exporters / processors, marketers favoured the agreement in terms of reaping the export economies of scale and timely and incessant availability of raw materials and processors for the high capacity utilization of processing plants and economies of scale. The marketers perceived the year round availability and increased quantum of sale consequent to the agreement. The consumers also approved the agreement on the year round availability and price stability and affordability in the domestic market. The price analysis on the comparison of the landing centre price and import price of sardine from ASEAN countries indicated that the interest of the primary stakeholders are not jeopardized as the domestic landing centre price is still competitive than the import price from ASEAN countrie

பருவநிலைமாற்றத்தைபற்றியஅறிவும்மேற்கொள்ளவேண்டியநடவடிந்தகைகளும் (ClimEd Series:2D)

பருவநிலைமாற்றத்தைபற்றியஅறிவும்மேற்கொள்ளவேண்டியநடவடிந்தகைகளும் (ClimEd Series:2D