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Search Results: 1 - 10 of 462159 matches for " Siddharth. A. Ladhake "
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Spectral Analysis of Sanskrit Devine Sound OM
A.A. Gurjar,Siddharth A. Ladhake
Information Technology Journal , 2009,
Abstract: Our attentiveness and concentration are pilfered from us by the proceedings take place around us in the world in recent times. Different challenges and impediments are faced by the people work in the industries, offices and even in business. It is tough to handle the stress some times. Therefore, to come out of the aforementioned troubles, meditation is essential for all human beings. In the same way, for pschychological stress, speech signal is uttered to be a considerable indicator. In the direction of mediating human subject, OM is a spiritual mantra, outstanding to fetch peace and calm. The entire psychological pressure and worldly thoughts are taken away by the chanting of OM mantra. Elimination of disruption and introduction of new dynamism in the body are given by the OM chanting. The consciousness could be promoted through the repetition of OM mantra. Furthermore, this mantra transcends the restrictions of a mentality. To systematically understand the meditative chant, termed the divine sound OM, is the endeavor of this research work. Spectral analysis has been carried out for OM mantra to study its structure and to identify the factors, which have been found to influence the human nerve system. By this analysis, we could conclude stress gets minimized after OM chant.
A Review on Techniques for Reduction of Harmonic Distortion
Sandeep V. Rode,Siddharth. A. Ladhake
International Journal of Electrical and Power Engineering , 2012, DOI: 10.3923/ijepe.2011.62.64
Abstract: In recent decades, the growing and widespread use of electronic equipment by different segment of society is perceptible. This equipment present itself as nonlinear impedesdances to its supplying electrical systems and generates harmonics with well-known adverse effects such as low power factor, electromagnetic interface, voltage distortion, etc. These disturbances have required researchers to present solution to minimize or eliminate them. This study has reviewed, the aim and techniques for reduction of harmonic distortion. Wide arrays of approaches have been discussed.
Brain Tumor Detection Using Marker Based Watershed Segmentation from Digital MR Images
Mr. Pratik Pradeep Singhai,,Dr. Siddharth A. Ladhake
International Journal of Innovative Technology and Exploring Engineering , 2013,
Abstract: This paper presents a method for detection of brain tumor from Magnetic Resonance Image. Pre-processing the image makes it ready for applying the watershed segmentation. Pre-processing includes image resizing, conversion to gray. Gradient magnitude is to be computed before applying the segmentation and magnitude of these gradients is computed using the sobel mask. Watershed segmentation is used for detecting the tumor. The basic watershed algorithm is well recognized as an efficient morphological segmentation tool however, a major problem with the watershed transformation is that it produces a large number of segmented regions in the image around each local minima embedded in the image. A solution to this problem is to use marker based watershed segmentation. Connected component analysis extracts the regions which are not separated by boundary after region boundaries have been detected. Finally tumor area is calculated using connected component analysis.
Micro-controller based Remote Monitoring using Mobile through Spoken Commands
Naresh P Jawarkar,Vasif Ahmed,Siddharth A Ladhake,Rajesh D Thakare
Journal of Networks , 2008, DOI: 10.4304/jnw.3.2.58-63
Abstract: Mobile phone can serve as powerful tool for world-wide communication. A system is developed to remotely monitor process through spoken commands using mobile. Mel cepstrum features are extracted from spoken words. Learning Vector Quantization Neural Network is used for recognition of various words used in the command. The accuracy of spoken commands is about 98%. A text message is generated and sent to control system mobile in form of SMS. On receipt of SMS, control system mobile informs AVR micro-controller based card, which performs specified task. The system alerts user in case of occurrence of any abnormal conditions like power failure, loss of control, etc. Other applications where this approach can be extended are also discussed.
BER PERFORMANCE OF OFDM SYSTEM WITH CYCLIC PREFIX & ZERO PADDING
Prafulla. D. Gawande,Sirddharth. A. Ladhake
International Journal of Advances in Engineering and Technology , 2013,
Abstract: Multicarrier schemes are supported to high data rate. Orthogonal Frequency Division Multiplexing (OFDM) and Filtered Multi-Tone (FMT) are two techniques of multicarrier schemes. OFDM is an attractive air-interface for next-generation wireless network without complex equalizer. OFDM is an emerging multi-carrier modulation scheme. It has been adopted by several wireless standards such as IEEE 802.11a, IEEE 802.16 and HiperLAN2. OFDM is designed such a way that it sends data over hundreds of parallel carrier which increases data rate. OFDM scheme is suffer by inter-symbol interference (ISI) problem. ISI is distortion in a signal in which one symbol interferes with subsequent symbols, this will degrade performance of OFDM system. There are several methods for reducing the effects of ISI. A guard interval insertion (cyclic prefix and Zero Padding) method is effective method to reduce the effect of ISI. Zero padding (ZP) of multicarrier transmissions has recently been proposed as an appealing alternative to the traditional CP to ensure symbol recovery. In this paper, we are studied the effect of CP and ZP on Bit Error Rate (BER) of OFDM technique with AWGN channel and Rayleigh fading channel. Through simulations, it is shown that the both techniques are effective in mitigating the effects of ISI. For high value of the CP and ZP, performances of both methods are better for Rayleigh fading channel as compared to AWGN channel. Simulation is performed by using MATLAB R2010a.
High Performance Voltage Controlled Oscillator (VCO) Using 65NM VLSI Technology
Ujwala A. Belorkar,S.A.Ladhake
International Journal of Computer Networks & Communications , 2010,
Abstract: CMOS" refers to both a particular style of digital circuitry design, and the family of processesused to implement that circuitry on integrated circuits (chips). CMOS circuitry in VLSI dissipates lesspower when static, and is denser than other implementations having the same functionality. As thisadvantage has grown and become more important, CMOS processes and variants for VLSI have come todominate, so that the vast majority of modern integrated circuit manufacturing is on VLSI technologyprocesses. A key circuit use in modern communication is voltage control oscillator VCO’s output is a ACwaveform whose frequency is dependent upon the input voltages. In today’s wireless communicationsystem, greater maximum frequency required by the VCO w.r.t. to the digital phones that use thesecircuit, low power consumption, small size & low fabrication cost are important design factor. The layoutof VCO which is develop by us is a modified design of high performance VCO .This is a optimum designfor use in industries at 65 nm VLSI technology . In the estimated design ,more emphases is given onpower consumption, layout design and many more. This report is a brief study of high performance VCOon 65 nm VLSI technology to achieve some objectives as mention above
Area Efficient 3.3GHZ Phase Locked Loop with Four Multiple Output Using 45NM VLSI Technology
Ms. Ujwala A. Belorkar,S.A.Ladhake
International Journal of VLSI Design & Communication Systems , 2011,
Abstract: This paper present area efficient layout designs for 3.3GigaHertz (GHz) Phase Locked loop (PLL) withfour multiple output. Effort has been taken to design Low Power Phase locked loop with multiple output,using VLSI technology. VLSI Technology includes process design, trends, chip fabrication, real circuitparameters, circuit design, electrical characteristics, configuration building blocks, switching circuitry,translation onto silicon, CAD and practical experience in layout design. The proposed PLL is designedusing 45 nm CMOS/VLSI technology with microwind 3.1. This software allows designing and simulatingan integrated circuit at physical description level. The main novelties related to the 45 nm technology arethe high-k gate oxide, metal gate and very low-k interconnect dielectric. The effective gate lengthrequired for 45 nm technology is 25nm. Low Power (0.211miliwatt) phase locked loop with four multipleoutputs as PLL8x, PLL4x, PLL2x, & PLL1x of 3.3 GHz, 1.65 GHz, 0.825 GHz, and 0.412 GHzrespectively is obtained using 45 nm VLSI technology.
Design of Low Power Phase Locked Loop (PLL) Using 45NM VLSI Technology
Ujwala A. Belorkar,S.A.Ladhake
International Journal of VLSI Design & Communication Systems , 2010,
Abstract: Power has become one of the most important paradigms of design convergence for multigigahertz communication systems such as optical data links, wireless products, microprocessor &ASIC/SOC designs. POWER consumption has become a bottleneck in microprocessor design. The coreof a microprocessor, which includes the largest power density on the microprocessor. In an effort toreduce the power consumption of the circuit, the supply voltage can be reduced leading to reduction ofdynamic and static power consumption. Lowering the supply voltage, however, also reduces theperformance of the circuit, which is usually unacceptable. One way to overcome this limitation, availablein some application domains, is to replicate the circuit block whose supply voltage is being reduced inorder to maintain the same throughput .This paper introduces a design aspects for low power phaselocked loop using VLSI technology. This phase locked loop is designed using latest 45nm processtechnology parameters, which in turn offers high speed performance at low power. The main noveltyrelated to the 45nm technology such as the high-k gate oxide ,metal-gate and very low-k interconnectdielectric described. VLSI Technology includes process design, trends, chip fabrication, real circuitparameters, circuit design, electrical characteristics, configuration building blocks, switching circuitry,translation onto silicon, CAD, practical experience in layout design
Defining Emerging Roles for NF-κB in Antivirus Responses: Revisiting the Interferon-β Enhanceosome Paradigm
Siddharth Balachandran ,Amer A. Beg
PLOS Pathogens , 2011, DOI: 10.1371/journal.ppat.1002165
Abstract:
Acousto-optic frequency modulator
Siddharth Tallur,Sunil A. Bhave
Physics , 2012,
Abstract: Frequency modulation of a continuous wave laser source enables generation of photons at multiple frequencies from a single pump laser. Such multiple closely spaced laser lines are important for high data rate QAM in dense-WDM networks. In this paper we present a monolithic silicon acousto-optic frequency modulator (AOFM) operating at 1.09GHz. We demonstrate frequency modulation of a 1564nm wavelength pump laser, resulting in generation of sideband laser lines spaced by 0.009nm.
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