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Inconel 718 is a high nickel content super alloy possessing high strength at elevated temperatures and resistance to oxidation and corrosion. The non-traditional manufacturing process of Rotary ultrasonic machining (RUM) possesses many advantages over traditional machining during the manufacture of Inconel 718 parts. An experimental investigation was conducted to determine the main RUM parameters which contribute to effects the metal removal rate and surface roughness of Inconel 718. It was found that feed rate is the most critical parameter in RUM.

In current scenario everything is being transferred on the web and other communication medium. So that we need to make our data secure from all other attacker and unauthorized person. So that we have to give lot of protection to the transmitting data. For that we have lots of cryptography algorithm .But all of then do not provide level best protection in today‟s world as there are lots of ways to make that algorithm cracked and the cryptanalyst can retrieve the plain text so easily. So that with reference to the RSA and other famous algorithms as Diffie Hellman and N-prime RSA we have tried to give one more level of security by the use of Magic Rectangle. And by the use of Magic Rectangle we can have different cipher text for the same character. So by these many reasons this approach give enhancement to the public key cryptosystem. And Magic Rectangle have different approach that can unable to get the plain text without the knowledge of generation of Magic Rectangle.

SUMMARY Primary tumour volume evaluation has predictive value for estimating survival outcomes. Using volumetric data acquired by MRI in patients undergoing induction chemotherapy (IC) these outcomes were estimated before the radiotherapy course in head and neck cancer (HNC) patients. MRI performed before and after IC in 36 locally advanced HNC patients were analysed to measure primary tumour volume. The two volumes were correlated using the linear-log ratio (LLR) between the volume in the first MRI and the volume in the second. Cox's proportional hazards models (CPHM) were defined for loco-regional control (LRC), disease-free survival (DFS) and overall survival (OS). Strict evaluation of the influence of volume delineation uncertainties on prediction of final outcomes has been defined. LLR showed good predictive value for all survival outcomes in CPHM. Predictive models for LRC and DFS at 24 months showed optimal discrimination and prediction capability. Evaluation of primary t...

Radiation and extreme temperature are the main inhibitors for the use of electronic devices in space applications. Radiation challenges the normal and stable operation of DC-DC converters, used as power supply for onboard systems in satellites and spacecrafts. In this situation, special design techniques known as radiation hardening or radiation tolerant designs have to be employed. In this work, a module level design approach for radiation hardening is addressed. A module in this sense is a constituent of a digital controller, which includes an analog to digital converter (ADC), a digital proportional-integral-derivative (PID) controller, and a digital pulse width modulator (DPWM). As a new Radiation Hardening by Design technique (RHBD), a four module redundancy technique is proposed and applied to the digital voltage mode controller driving a synchronous buck converter, which has been implemented as hardware-in-the-loop (HIL) simulation block in MATLAB/Simulink using Xilinx system...