IMPACT : International Journal of Research in Engineering & Technology

1-6

Authors: GIRISH DESHMUKH & C R PATIL

Lean manufacturing has become an important avenue for both academics and practitioners in recent times many organisations around the world have attempted to implement it but the lack of clear understanding of lean performance and its measurements will contribute to the failure of the lean practice. There are many papers , articles and reports that address lean principles and tools but few studies are focussed on evaluation of lean. Manufacturing companies worldwide have been replacing traditional mass-production practices by lean initiatives. This translation process is progressive and may vary depending on several factors. Hence, it could be expected that the degree of adoption of the lean practices could vary significantly among industries, The literature studies showed lean manufacturing started at Toyota car manufacturing plant, Japan, which is known as Toyota Production System (TPS).The main pillars in TPS are Just in time and automation which main objective is to identify and eliminate waste in an organization. Lean manufacturing can be applied successfully in all industries providing a full understanding on lean ingredients i.e. concept, principles and practices. There are numerous practices being highlighted by academicians and practitioners which are compulsory to be implemented in order to gain full benefits of lean. As small and medium enterprises (SMEs) are resources constraints, facing difficulties to adopt all lean principles this module examines the principles, techniques, key tools of “Lean” and how they might apply in a variety of processes and sectors. The strategic importance of creating “lean enterprise” is explored as well as the challenges associated with achieving and sustaining this. The module also provides scope for participants to explore how they might appropriately apply Lean in their own organizations The purpose of this paper is to explore the implementation performance of lean principles in Indian manufacturing, the paper developed a survey in the New Mumbai Metropolitan Area, which considered industries of different sizes, from different industrial segments

19-24

Authors: GITANJALI SAHU, ANUBHA S. GOUR & B.P CHANDRA

The objective of this study is to explore the possibility of synthesizing MgO: Dy3+ by using combustion synthesis method. Magnesium oxide powders doped with Dy have been prepared by this method and synthesisation occurs. The average particle size, d spacing and intensity are estimated from XRD analysis. The morphology and structure was analyzed by scanning electron microscopy. EDX was used for the elemental analysis of the sample.

31-42

Authors: ADEYEMO, I. A., FAKOLUJO, O. A. & ADEPOJU, G. A.

In Selective Harmonic Elimination-Pulse Width Modulation (SHE-PWM) method, low order harmonics are eliminated, while the fundamental harmonic is obtained at the desired value. In this paper, Variable Sampling Ant Colony Optimization (SamACO) algorithm with random initial values is proposed for solving the transcendental nonlinear equations known as Selective Harmonic Elimination (SHE) equations that characterize the selected harmonics in an 11-level inverter. The algorithm is a continuous (combinatorial) optimization algorithm that is based on the food foraging behavior of ants in a swarm. The dynamic exploitation and random exploration operators in the algorithm ensure both accuracy and convergence to global optima. Fast Fourier Transform (FFT) analysis of the synthesized voltage waveform reveals the complete elimination of the harmonics as their values tend towards zero. Both computational and MATLAB simulation results show that the proposed method is highly efficient for elimination of the selected low order harmonics as well as minimization of the total harmonic distortion (THD).

53-60

Authors: SAUD F ALSAHLI

This study is about exploring the shifting trends in today’s digital age, particularly with regard to the protection of expression versus ideas as understood in the US copyright law. The study utilized the qualitative approach in order to address the objectives identified. Accordingly, findings from the study revealed that expression and ideas, in the context of the copyright law, can be deemed in contrast with freedom of speech based on how it is exercised through the Internet channel. Grounded on this notion, this study concludes that the US copyright law protects copyrighted materials wherein the law is not intended to limit people from exercising freedom of speech, rather educate people regarding the extent of the protection of the rights of copyrighted materials so as to prevent reproduction without authorization especially in the digital age.