221 research outputs found
An Analytical study of Contribution of Agriculture Sector in growth of Indian Economy
AbstractAgriculture sector referred as primary sector. it is very important for economic growth of any country. It emerged as an essential-growing sector within the world economy. This sector contributes huge part of Indian GDP and occupy first place in employment provider. 58% of India’s population is depends upon Agriculture. Gross Value Added (GVA) by agronomy, forestry and trawling was estimated at Rs. 19.48 lakh crore (US 7.3 billion) over Rs. 37,397 crore (US$ 5.1 billion) in the same period last year. Its respectable share in foreign direct investment (FDI) inflows similarly as in total exports makes it the engine of economic process. Keeping in higher than scene, the current study makes an analysis of agriculture sector in Indian economy. The study shows that agriculture sector has achieved incredible growth over the year in Indian economy. Besides, their contributions in value, employment and exports are rising significantly. To take care and accelerate the expansion & contributions of this sector & to develop it as a real engine of economic process
Designing smart markets
Electronic markets have been a core topic of information systems (IS) research for last three decades. We focus on a more recent phenomenon: smart markets. This phenomenon is starting to draw considerable interdisciplinary attention from the researchers in computer science, operations research, and economics communities. The objective of this commentary is to identify and outline fruitful research areas where IS researchers can provide valuable contributions. The idea of smart markets revolves around using theoretically supported computational tools to both understand the characteristics of complex trading environments and multiechelon markets and help human decision makers make real-time decisions in these complex environments. We outline the research opportunities for complex trading environments primarily from the perspective o
Multi-Band Intra-Night Optical Variability of BL Lacertae
We monitored BL Lacertae frequently during 2014 - 2016 when it was generally
in a high state. We searched for intra-day variability for 43 nights using
quasi-simultaneous measurements in the B, V, R, and I bands (totaling 143 light
curves); the typical sampling interval was about eight minutes. On hour-like
timescales, BL Lac exhibited significant variations during 13 nights in various
optical bands. Significant spectral variations are seen during most of these
nights such that the optical spectrum becomes bluer when brighter. The
amplitude of variability is usually greater for longer observations but is
lower when BL Lac is brighter. No evidence for periodicities or characteristic
variability time-scales in the light curves was found. The color variations are
mildly chromatic on long timescales.Comment: 15 pages, 5 Figures, 3 Tables; Accepted for publication in Galaxies;
a special issue on Microvariability of Blazar
Multi-band optical variability of three TeV Blazars on Diverse Timescales
We present our optical photometric observations of three TeV blazars, PKS
1510-089, PG 1553+113 and Mrk 501 taken using two telescopes in India, one in
Bulgaria, one in Greece and one in Serbia during 2012 - 2014. These
observations covered a total of 95 nights with a total of 202 B filter frames,
247 images in V band, 817 in R band while 229 images were taken in the I
filter. This work is focused on multi-band flux and colour variability studies
of these blazars on diverse timescales which are useful in understanding the
emission mechanisms. We studied the variability characteristics of above three
blazars and found all to be active over our entire observational campaigns. We
also searched for any correlation between the brightness of the sources and
their colour indices. During the times of variability, no significant evidence
for the sources to display spectral changes correlated with magnitude was found
on timescales of a few months. We briefly discuss the possible physical
mechanisms most likely responsible for the observed flux variability.Comment: 11 pages, 7 figures, 9 tables. Accepted for publication in MNRA
Information Transparency in B2B Auction Markets: The Role of Winner Identity Disclosure
We study the impact of information transparency in B2B auctions. Specifically, we measure the effect of concealing winners’ identities on auction outcomes using a large-scale, quasi-natural field experiment. Contrary to the conventional wisdom that “the more information, the better,” we find that concealing winners’ identities leads to a significant increase in price by approximately 6%, and such effect holds true across both online and offline channels as well as different types of bidders. We further explore the mechanism that drives the observed effect. The empirical analysis suggests that the price increase may primarily stem from the disruption of imitative bidding which relies on the identification of fellow competitors. Our findings have important implications for the design of auction markets, especially multi-channel B2B markets
Frequency dependent core shifts and parameter estimation for the blazar 3C 454.3
We study the core shift effect in the parsec scale jet of the blazar 3C 454.3
using the 4.8 GHz - 36.8 GHz radio light curves obtained from three decades of
continuous monitoring. From a piecewise Gaussian fit to each flare, time lags
between the observation frequencies and spectral indices
based on peak amplitudes are determined. From the fit , indicating equipartition between
the magnetic field energy density and the particle energy density. From the fit
, is in the range to . A mean
magnetic field strength at 1 pc, G, and at the core,
mG, are inferred, consistent with previous
estimates. The measure of core position offset is
pc GHz when averaged over all frequency pairs. Based on the
statistical trend shown by the measured core radius as a
function of , we infer that the synchrotron opacity model may not be valid
for all cases. A Fourier periodogram analysis yields power law slopes in the
range to describing the power spectral density shape and gives
bend timescales in the range yr. This result, and both positive
and negative , indicate that the flares originate from multiple shocks
in a small region. Important objectives met in our study include: the
demonstration of the computational efficiency and statistical basis of the
piecewise Gaussian fit; consistency with previously reported results; evidence
for the core shift dependence on observation frequency and its utility in jet
diagnostics in the region close to the resolving limit of very long baseline
interferometry observations.Comment: 12 pages, 11 figures (23 sub-figures), 5 tables. Accepted for
publication in MNRA
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