12,164 research outputs found
Aquacultural Potential of Derelict Waterbodies – A Case Study
Derelict waterbodies could be an important source to boost fish production for meeting the future fish demand of the country. The study has shown that fish yield from these waterbodies could be as high as 4.6 t/ha. Overall, net income per hectare through scientific management of derelict waterbodies has been found to be Rs 104443, with maximum and minimum net incomes per hectare being Rs 207416 and Rs 64033, respectively. Benefit–cost analysis has indicated that all waterbodies are favourable for aquaculture. Overall B-C ratio under the project has been found to be 3.82 and interestingly, scientific management of waterbodies could yield good income even from low level of investment. Such an activity can provide enormous income and employment opportunities in the rural areas. To encourage large-scale utilization of available derelict waterbodies for aquaculture, a prudent and well-conceived policy for leasing out derelict waterbodies and transfer of relevant technologies to the needy and interested farmers should be evolved. These steps would not only boost fish production in the rural areas, but would also provide much needed impetus to the growth and diversification of rural economy.Resource /Energy Economics and Policy,
Saturation of Transverse Energy per Charged Hadron and Freeze-Out Criteria in Heavy-Ion Collisions
For beam energies from SPS to RHIC, the transverse energy per charged
particle, , saturates at a value of approximately 0.8 GeV.
A direct connection between this value and the freeze-out criterium GeV for the primordial energy and particle number in the hadronic
resonance gas model is established.Comment: 7pages 5 figure
On some strategies using auxiliary information for estimating finite population mean
This paper presents an empirical investigation of the performance of five strategies for estimating the finite population mean using parameters such as mean or variance or both of an auxiliary variable. The criteria used for the choices of these strategies are bias, efficiency and approach to normality (asymmetry)
Gravitational Waves in Generalised Brans-Dicke Theory
We have solved cosmological gravitational Wave(GW)equation in the frame work
of Generalised Brans-Dicke(GBD) theory for all epochs of the Universe.The
solutions are expressed in terms of the present value of the Brans-Dicke
coupling parameter .It is seen that the solutions represent
travelling growing modes for negative values of for all epochs of
the Universe.Comment: 7Pages,no figure
On some strategies using auxiliary information for estimating finite population mean
This paper presents an empirical investigation of the performance of five strategies for estimating the finite population mean using parameters such as mean or variance or both of an auxiliary variable. The criteria used for the choices of these strategies are bias, efficiency and approach to normality (asymmetry)
State-insensitive trapping of Rb atoms: linearly versus circularly polarized lights
We study the cancellation of differential ac Stark shifts in the 5s and 5p
states of rubidium atom using the linearly and circularly polarized lights by
calculating their dynamic polarizabilities. Matrix elements were calculated
using a relativistic coupled-cluster method at the single, double and important
valence triple excitations approximation including all possible non-linear
correlation terms. Some of the important matrix elements were further optimized
using the experimental results available for the lifetimes and static
polarizabilities of atomic states. "Magic wavelengths" are determined from the
differential Stark shifts and results for the linearly polarized light are
compared with the previously available results. Possible scope of facilitating
state-insensitive optical trapping schemes using the magic wavelengths for
circularly polarized light are discussed. Using the optimized matrix elements,
the lifetimes of the 4d and 6s states of this atom are ameliorated.Comment: 13 pages, 13 tables and 4 figure
LRS Bianchi type-I cosmological model with constant deceleration parameter in gravity
A spatially homogeneous anisotropic LRS Bianchi type-I cosmological model is
studied in gravity with a special form of Hubble's parameter, which
leads to constant deceleration parameter. The parameters involved in the
considered form of Hubble parameter can be tuned to match, our models with the
CDM model. With the present observed value of the deceleration
parameter, we have discussed physical and kinematical properties of a specific
model. Moreover, we have discussed the cosmological distances for our model.Comment: Published versio
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