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Weathering of rocks that regulate the water chemistry of the river has been used to evaluate the CO2 consumption rate which exerts a strong influence on the global climate. The foremost objective of the present research is to estimate the chemical weathering rate (CWR) of the continental water in the entire stretch of Brahmaputra River from upstream to downstream and their associated CO2 consumption...
Owing to verification bottleneck, analog and mixed signal IPs like Phase Locked Loop (PLL) take considerable amount of design cycle time. To evade this, we have presented detailed real value modeling approach, which facilitate analog accuracy in digital simulation, for Spread Spectrum Clock Generator (SSCG) PLL. SSCG PLLs are universally used to avoid Electro-migration Interference (EMI), major cause...
High performance SOC contains considerable amount of SRAM memory occupying more than 60% of total SOC area. In CMOS process scaling down of feature size enables higher density and lower cost but high density array has significant impact on manufacturing yield and performance parameters of conventional 6T SRAM cell. In this paper we have presented an alternate area compact 5 transistor portless SRAM...
This paper proposes an effective multiple watermarking algorithm based on Discrete Wavelet Transform for audio signal. This approach embeds multiple gray images inside the detailed coefficient of Discrete Wavelet Transform at the first and second level decomposition. Embedded multiple watermark can be easily and faithfully recovered under different common signal processing attacks such as high pass...
This paper proposes a new image steganography method of hiding multiple secret images (2 bit binary image) in a single cover image (24 bit cover image). According to the proposed method, one of the secret images is embedded in a randomized nature in one of the primary color matrix of the color cover image using the least significant bit substitution technique. The other secret images are encrypted...
Cryptography and steganography are the two major fields available for data security. While cryptography is a technique in which the information is scrambled in an unintelligent gibberish fashion during transmission, steganography focuses on concealing the existence of the information. Combining both domains gives a higher level of security in which even if the use of covert channel is revealed, the...
Compressed sensing addresses the problem of recovering a sparse solution to a system of linear under-determined equations. In this work we are interested in deriving algorithms when the system is non-linear. Our algorithm is based on gradient descent approach followed by subsequent soft thresholding. We have tested our algorithm for both l2-norm and l1-norm cost functions (data fidelity) with linear...
Adverse effect of rapid industrialization on groundwater quality and quantity is widely known problem especially in developing countries. Tirupur, which is situated on the bank of Noyyal River in India, is known for intensive textile processing activities. As groundwater is the main water source for drinking water, there is an urgency to assess the groundwater quality. Twenty groundwater samples were...
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