1,726,033 research outputs found
Ramkumar et al. (2016) Premotor and motor cortices encode reward
No full textA dataset that was used in a paper by Ramkumar et al. (2016), PLoS One,
to report the effect of reward on firing rates in the macaque premotor
and motor cortices
Experimental evaluation of long term evolution-based NC OFDM secondary-to-secondary interference
No full textScarcity of spectrum resources, inefficient spectrum usage and the inflexibility of the current spectrum assignment are few of the major roadblocks in the development of new wireless communication standards. Secondary spectrum sharing has become a viable solution to alleviate this problem. Secondary users are unlicensed devices that use opportunistic spectrum access to identify vacant frequency bins and thereby utilize the spectrum. For advanced wireless communication standards like the Long Term Evolution (LTE) which primarily calls for higher data rates, evaluation of design parameters for ensuring efficient coexistence of heterogeneous secondary users and guaranteeing acceptable minimum level of performance becomes essential. Additionally, the understanding of the interference between secondary users occupying adjacent frequency bands for their transmission is imperative. This thesis focuses on the coexistence of secondary users in the same band assuming that the primary spectrum is found available. By Implementing two Non Contiguous Orthogonal Frequency Division Multiplexing ( NC-OFDM) based secondary transmitters on a real time platform, the design parameters that need to be considered to ensure efficient coexistence have been identified and investigated. The performance degradations observed at a particular secondary link due to presence of another interfering secondary link occupying adjacent frequency bands for its transmission have also been studied. This thesis also focuses on implementation of algorithms to modify the existing NC-OFDM transmission at the secondary transmitter end to reduce its Interference effects on the other secondary links operating within the same band. The focus is on an LTE-based Secondary Non Contiguous Orthogonal Frequency Division Multiplexing Transceiver on a Real Time Platform developed by National Instruments. The various blocks needed to design a real time LTE based communications links are discussed. An experimental LTE-to-LTE interference analysis based on the Real Time Platform and the designed system is presented.M.S.Includes bibliographical referencesby Ajay Ramkumar Iye
Premotor and motor cortices encode reward
No full textA dataset that was used in a paper by Ramkumar et al. (2016), PLoS One, to report the effect of reward on firing rates in the macaque premotor and motor cortices<br
Hotspots of Extinction: Country-Level Data on Threatened Vertebrates, Invertebrates, and Plants
No full textThis dataset provides annual records of threatened species from 2004 to 2023, focusing on the 25 countries most impacted by biodiversity loss.
For direct download of datasets.
The data is organized into three categories—Vertebrates, Invertebrates, and Plants—and sourced from UNdata and the IUCN Red List.
Each entry includes the country name, year, species count, and biodiversity group. It is designed to support research, education, and public engagement on global conservation priorities.
Source and Collection Timeline
Original Data Range: 2004–2023
Cleaned and Extracted: November 2024
Primary Sources: UNdata, IUCN Red List (via UN Statistics Division)
Data Processing Summary
Data Cleaning: Removed incomplete entries and excluded non-country-level data (e.g., continents or regions).
Grouping: Categorized into Vertebrates, Invertebrates, and Plants.
Top 25 Filter: Selected the top 25 countries per year and per category to improve visual clarity.
File Generation: Created three structured CSVs using Python (Pandas).
Data Format
File Type: CSV (.csv)
Columns Include:
Country – Name of the country
Year – Range from 2004 to 2023
Value – Number of threatened species
Group – Vertebrates, Invertebrates, or Plant
Geological, geophysical, and inherited tectonic imprints on the climate and contrasting coastal geomorphology of the Indian peninsula
No full textAbstract not availableMu. Ramkumar, D. Menier, M. Mathew, M. Santos
FORMULATION AND CHARACTERIZATION OF EPIGALLOCATECHIN GALLATE NANOPARTICLES
No full text<p>FORMULATION AND CHARACTERIZATION OF EPIGALLOCATECHIN GALLATE NANOPARTICLES</p>
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<p>EGCG have variety of therapeutic advantages including HIV. Check wikipedia "https://en.wikipedia.org/wiki/Epigallocatechin_gallate"</p>
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<p>Cite: Ramkumar Ponnuraj et al. Formulation And Characterization of Epigallocatechin Gallate Nanoparticles. Indo American Journal of Pharm Research.2015:5(01).</p
On the smoothness of lexicographic points on Hilbert schemes
Full text linkWe study the geometry of standard graded Hilbert schemes of polynomial rings and exterior algebras. Our investigation is motivated by a famous theorem of Reeves–Stillman for the Grothendieck Hilbert scheme, which states that the lexicographic point is smooth. By contrast, we show that, in standard graded Hilbert schemes of polynomial rings and exterior algebras, the lexicographic point can be singular, and it can lie in multiple irreducible components. We answer questions of Peeva–Stillman and of Maclagan–Smith
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