Informatics Publishing Limited

M. Saraswathi ¹, G. Kannan ²

Affiliations
1 SMIT, Chennai, IN
2 Anna University, Coimbatore, IN

Abstract

This paper presents a new method for blood vessel detection in digital retinal images. This method uses a mathematical morphology scheme for pixel classification and computes segmented blood vessels by using morphological operations. The method proves especially accurate for vessel detection in DIARETDB0 and DIARETDB1 images. Its effectiveness and robustness with different image conditions, together with its simplicity and fast implementation, make this blood vessel segmentation proposal suitable for retinal image computer analyses such as automated screening for early diabetic retinopathy detection.

Keywords

Diabeticretinopathy, Mathematical Morphology, Retinal Image, Optic Disc, Vessels Segmentation.

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R. Karthik ¹, M. Saraswathi ¹, G. Selvakiruthika ¹, S. Priyatharshini ¹

Affiliations
1 P.A. College of Engineering and Technology, IN

Abstract

Internet of Things (IoTs) is a unique identifier to transfer the data over a network without human-to-human or human-to-machine interaction. It was evolved from the convergence of Wireless technologies, Micro Electro-Mechanical System (MEMS) and the internet. Intellectual gateway is used to control home appliances with the help of any internet based devices through web page. To integrate the real-world devices to the web, so they can be easily allow to combined with other virtual and physical resources and creates a novel, standalone, flexible monitoring system. The home automation system differs from other system by allowing the user to operate the system from anywhere around the world through internet connection. The proposed system presents a low cost and flexible home control and monitoring system using an embedded web server, with IP connectivity for accessing and controlling devices and appliances remotely using a web based application. It can be expanded to communication between things them self or device to device communication with the help of novel concept.

Keywords

Internet of Things, Smart Home, Bluetooth, Home Automation, Arduino Based Gateway.

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M. Saraswathi ¹, S. P. K. Babu ¹

Affiliations
1 Periyar Maniammai University, Thanjavur – 613403, Tamil Nadu, IN

Abstract

Objective: Designing energy efficient mobile communication system is the main challenge for the LTE researchers due to increasing of users and their demands in accessing broadband services on mobile phones. High data rate, reduced Bit Error Rate (BER) and low Peak to Average Power Ratio (PAPR) are the requirement of the current telecommunication technology in both uplink and downlink. In this paper, various modulations techniques (QPSK, BPSK and QAM) and pre-coding schemes (DPC, THP, and RS) are proposed to analyze the uplink characteristics. Methods/Analysis: This paper investigates Single Carrier Frequency Division Multiple Access (SC-FDMA) and performs its link level models with Tomlinson-Harashima Precoder (THP) and Reed Solomon coding (RS) in separate and integrative manner which is proposed. Findings: In order to prove the hypothetical results, various simulations performed for BER of SC-FDMA system. Results proved that the integration of THP and RS coder in the SC-FDMA transmission, improves the system performance in case of BER. The proposed techniques can be implemented in GPRS, UMTS, GSM, EDGE, HSPA and LTE.

Keywords

Bit Error Rate, LTE, OFDMA, PAPR, SC-FDMA, THP.

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P. SivaNagendra Reddy ¹, M. Saraswathi ¹

Affiliations
1 Department of ECE, Kuppam Engineering College, Kuppam - 517425, Andhra Pradesh, IN

Abstract

Now a days in VLSI technology size, power, and speed are the main constraints to design any circuits. In normal multipliers delay will be more and the number of computations also will be more. Because of that speed of the circuits designed with the normal multipliers will be low and it will consume more power. This paper describes Multiply and Accumulate Unit using Vedic Multiplier and DKG reversible logic gates. The Vedic multiplier is designed by using UrdhavaTriyagbhayam sutra and the adder design is done by using reversible logic to perform high speed operations. Reversible logic gates are also the essentialconstraint for the promising field of Quantum computing. The UrdhavaTriyagbhayam multiplier is used for the multiplication function to reduce partial products in the multiplication process and to get high concert and less area.The reversible logic is used to get less power. The MAC is designed using Verilog code, simulation, synthesis is done in both RTL compiler using Xilinx and implemented on Spartan 3e FPGA Board.

Keywords

MAC, Reversible Gates, Vedic Multiplier

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A. V. Ashok Kumar Reddy ¹, C. Venkata Prasad ¹, M. Saraswathi ¹, HMP Naveen Kumar ¹, M. N. Prabhakar ¹, V. Balaji ¹, K. Madhusudhan Rao ¹, B. Yerriswami ², C. Lakshmi Narayana Reddy ², B. Mallikarjuna ², M. C. S. Subha ², K. Chowdoji Rao ¹

Affiliations
1 Dept. of Polymer Science & Tech., S.K. University, Anantapur, A.P., IN
2 Dept. of Chemistry, S.K. University, Anantapur, A.P., IN

Abstract

Chitosan (CS), a polysaccharide, has many industrial applications and its miscibility studies are most useful. Synthetic polymer, poly (ethylene glycol) (PEG) is a subject of current research interest. Hence, miscibility of CS and PEG in aqueous acetic acid solutions has been studied by ultrasonic velocity, refractive index and viscosity techniques at 303.15 K, over a wide range of compositions ranging from 0-100% of CS in CS/PEG blends. The results of ultrasonic velocity and its derived acoustical parameters such as adiabatic compressibility (β_ad), acoustic impedance (Z), relaxation strength (γ_s) and Rao number (R) have been used to discuss the miscibility/immiscibility of the blend under study. These discussions revealed that the blend is miscible up to 40% of chitosan in the blend and beyond this, the blend is immiscible. Using the viscosity data, the interaction parameters ΔB, μ and α were computed and used to discuss the miscibility/immiscibility nature of this blend. The ultrasonic velocity results are further confirmed by viscosity and refractive index results.

Keywords

Chitosan/PEG Blend, Acoustical Parameters, Miscibility, Refractive Index.

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