202,844 research outputs found
Generation of the Amundsen Sea Low by Antarctic orography
No full textData required to reproduce figures presented in Goyal, R., Jucker, M., Sen Gupta, A., & England, M. H. (2021). Generation of the Amundsen Sea Low by Antarctic orography. Geophysical Research Letters, 48, 2020GL091487 https://doi.org/10.1029/2020GL09148
Games on Social Networks: On a Problem Posed by Goyal
No full textWithin the context of games on networks S. Goyal (Goyal (2007), pg. 39) posed the following problem. Under any arbitrary but fixed topology, does there exist at least one pure Nash equilibrium that exhibits a positive relation between the cardinality of a player's set of neighbors and its utility payoff? In this paper we present a class of games/topologies in which pure Nash equilibria with the above property do not exist.Social sharing of information, Game theory, Social network
Ruscheweyh-Goyal Derivative of Fractional Order, its Properties Pertaining to Pre-starlike Type Functions and Applications
No full textThe study of the operators possessing convolution form and their properties is considered advantageous in geometric function theory. In 1975 Ruscheweyh defined operator for analytic functions using the technique of convolution. In 2005, Goyal and Goyal generalized the Ruscheweyh operator to fractional order (which we call here Ruscheweyh-Goyal differential operator) using Srivastava-Saigo fractional differential operator involving hypergeometric function. Inspired by these earlier efforts, we discuss the properties of the Ruscheweyh-Goyal derivative of arbitrary order. We define a class of pre-starlike type functions involving the Ruscheweyh-Goyal fractional derivative and obtain the inclusion relation. Further, we prove that Ruscheweyh-Goyal derivative operator preserve the convexity and starlikeness for an analytic function. The majorization results for fractional Ruscheweyh-Goyal derivative has been discussed using a newly defined subclass
Macroeconomic policy and the exchange rate: working together?
No full textThe chapter reviews the behaviour of the Indian exchange rate over the past few years, and its interactions with the macroeconomic cycle. It examines the extent to which exchange rate policy has been able to contribute to lowering the probability of currency and banking crises, ensuring sustainable internal and external balance, and containing inflation. Given the political economy, more openness, the structural wage-price processes, the degree of backward and forward looking behavior in the Indian economy, the chapter draws out implications for macroeconomic policy. It finds that structure combined with openness actually increases the degrees of freedom and impact of monetary policy.Exchange rate, Indian macroeconomic policy, political economy
Through a Glass Darkly - Deciphering the Impact of Oil Price Shocks
No full textIn order to examine if the impact of oil price shocks depends on the structure of an economy, a vertical (VSC) and a horizontal (HSC) long-run supply curve identification are successively imposed on a three variable VAR with Indian time series data. While core inflation is measured with the VSC, the HSC requires a new concept of demand-driven inflation : Residual (demand) inflation, which gives the impact of short and medium run demand shocks on inflation. Core and residual inflation are both estimated. The data favors the HSC, but both identifications imply that policy demand squeeze aggravated international oil price shocks.Oil shocks, VAR, Identification strategies, Developing economy, Residual Inflation
Through a glass darkly: Deciphering the impact of oil price shocks
No full textIn order to examine if the impact of oil price shocks depends on the structure of an economy, a vertical (VSC) and a horizontal (HSC) long-run supply curve identification are successively imposed on a three variable VAR with Indian time series data. While core inflation is measured with the VSC, the HSC requires a new concept of demand-driven inflation: Residual (demand) inflation, which gives the impact of short and medium run demand shocks on inflation. Core and residual inflation are both estimated. The data favors the HSC, but both identifications imply that policy demand squeeze aggravated international oil price shocks.Oil Shocks, VAR, Identification strategies, Developing economy, Residual Inflation
Zonal wave 3 Pattern in the Southern Hemisphere generated by tropical convection
No full textData files from atmospheric general circulation model simulations used in Goyal R., Jucker M., Sen Gupta A., Hendon H. H. and England M. H. (2021). Nature Geoscience. DOI: 10.1038/s41561-021-00811-
Generation of the Amundsen Sea Low by Antarctic orography
No full textData required to reproduce figures presented in Goyal, R., Jucker, M., Sen Gupta, A., & England, M. H. (2021). Generation of the Amundsen Sea Low by Antarctic orography. Geophysical Research Letters, 48, 2020GL091487 https://doi.org/10.1029/2020GL09148
Natural Data-augmentation for Skin Lesions (ISIC-2017 Challenge Dataset)
No full textData augmentation techniques may mitigate many limitations of datasets, such as imbalanced data among the classes of skin lesions and heterogeneous sources of data, by adding augmented samples with different image transformations, such as rotation, random crop, horizontal and vertical flip, translation, shear, color jitter, and colorspace. It is proven in many studies that data augmentation
improved the diagnosis of skin cancer. In the HAM10000 dataset, the skin lesion images were captured at different magnifications or angles or with different cameras, a process known as natural data augmentation. We used a deep learning architecture called Faster R-CNN to develop the algorithm to generate augmented copies similar to the natural data-augmentation for ISIC-2017 challenge dataset
Use of Sewage Effluent as Water Replacement in Microbial Concrete
No full textMicrobial concrete is made by adding microbes to the standard material of the concrete. These
microbes lead toward the formation of calcium carbonate crystals within the pores of the
concrete specimen known as microbial induced calcite precipitation (MICP). This results in the
formation of denser microstructure of concrete, having high compressive strength, lower initial
surface absorption, lower rate of initial and secondary absorption and better corrosion resistance.
In this research work, sewage effluent was used in place of fresh water for casting and curing of
the specimen. Microbes were mixed with sewage effluent along with nutrient media (NB and
CSL) supplemented with calcium chloride and urea. Compressive strength test were performed
after 3, 7, 28 and 90 days of curing while the durability tests were performed after 28 days of
curing. From the experimental data it was observed that the performance of the microbial
concrete produced by using sewage effluent was much better than the conventional concrete mix
produced by using sewage effluent only. The relative increase in the 90 days compressive
strength of the microbial concrete was 43.13% and 37.02% as compared to the control specimen
(S-S) in case of microbial treated NB media and microbial treated CSL media, respectively. The
durability properties of the microbial concrete were very much improved as compared to the
control specimens. Also, microbial concrete is resistive to corrosion of the reinforcement bar.
Corrosion of control specimen takes place after 6 days while the corrosion of microbial concrete
takes place after 14 days and 10 days in case of microbial treated NB media and microbial
treated CSL media, respectively.
Out of microbial treated NB media and microbial treated CSL media, microbial treated NB
media is much better. This is because of the cost difference between them. CSL is an industrial
by-product, while NB is an expensive laboratory nutrient medium. The experimental results
regarding strength and durability properties of the concrete specimens were approximately same
for both the nutrient medium. So for huge construction microbial treated CSL media should be
economical
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