A ‘VUCA’ Metrics Analysis of Organized Retail Sector in India

Instability and arbitrariness are inherent in the business arena and the Indian retail industry is not unscathed from that. VUCA- buzz word of the modern dynamic business environment has its own footprint in the Indian retail industry and specifically the organized retail ecosystem. The presence of Volatility, Uncertainty, Complexity & Ambiguity (VUCA) in Indian organized retail industry cannot be underestimated. This paper analyses the characteristics of Indian organized retail industry on the basis of Bennett & Lemoine’s VUCA metrics and illustrates how the Indian organized retail industry is exposed to each facet of VUCA environment. Keywords: Volatility, Uncertainty, Complexity, Ambiguity, VUCA metrics, Organized retail, Indi

Stress Redistribution Near a Crack in Maraging Steel using Composite Patch

The presence of a crack significantly reduces the load bearing capacity of a structure made of fracture prone material. The conventional process of repairing a defect is gouging and filling the gouged location by rewelding. It is not only time consuming but also constrained by the number of repairs that can be done as material properties degrade with each round of rewelding. In an attempt to overcome the limitation of the conventional repair process, repairing a defect using composite patch is proposed. The study is carried out on Maraging steel (M250) and the defect considered is a crack. Stress intensity factor (SIF), being an important parameter in fracture-based design, it is evaluated in Abaqus. Extended finite element method is used to model the crack. SIF is used to predict the failure load of a surface cracked tension specimen and the same is compared with the values reported in literature. Composite patch is modelled using woven ply properties. A separate layer of adhesive is also modelled to predict the properties adhesive properties. Failure analysis of each component namely, the Maraging steel plate, the composite patch and the adhesive is carried.  It was observed that the addition of a composite patch completely nullifies the presence of a crack. The patch with thickness 1mm and woven ply properties is having minimal damage initiation and likely to survive. The adhesive properties required is also obtained from the finite element analysis.  Thus, it was observed that a composite patch with woven ply properties and thickness 1mm is able to completely nullify the effect of a crack when bonded with a suitable adhesive as predicted by the analysis

Circle formation by asynchronous opaque robots on infinite grid

This paper presents a distributed algorithm for circle formation problem under the infinite grid environment by asynchronous mobile opaque robots. Initially all the robots are acquiring distinct positions and they have to form a circle over the grid. Movements of the robots are restricted only along the grid lines. They do not share any global co-ordinate system. Robots are controlled by an asynchronous adversarial scheduler that operates in Look-Compute-Move cycles. The robots are indistinguishable by their nature, do not have any memory of their past configurations and previous actions. We consider the problem under luminous model, where robots communicate via lights, other than that they do not have any external communication system. Our protocol solves the  circle formation problem using seven colors. A subroutine of our algorithm also solves the line formation problem using three colors

BioRadBase: A database for bioremediation of radioactive waste

Radioactive waste from different sectors such as nuclear energy, health care and food has become a discernible part of our environment. Several dumping methods are in routine practice to dispose radioactive wastes. Huge chemical and energy input in various skillful physico-chemical methods has limited their use while biological methods exploring the potential of micro-organisms could be a promising and eco-friendly approach to remediate radioactive pollutants. Bio-transformation, bio-accumulation and bio-sorption are key processes that have been tried for radionuclide remediation. BioRaDBase is the first database dedicated to micro-organisms which have been explored or engineered to remediate radioactive waste from the environment. The database serves as a comprehensive knowledgebase to search bacteria and fungi which have the ability to transform radioactive waste. This database would be a useful tool for the development of new bio-remediation technologies to clean up radioactive waste from the environment. The information in database has been managed under five classes, that is, type of radioactive waste, micro-organisms, genus listing, literature and waste management. The entries are also linked to external databases such as National Center for Biotechnology Information (NCBI), providing wide background information. Beside these, under the news section of the database, a user can connect to dedicated organizations working on issues like environmental protection, nuclear energy and radionuclide dumping. BioRaDBase can be accessed at http://biorad.igib.res.in.Keywords: Bioremediation of radioactive waste (BioRaDBase), radionuclides, biotransformation, biocrystallization, radioisotope, nuclear wast

Design of Decoupler and Performance Analysis of A Distillation Column

The main aim of this thesis is to control the basic parameters of distillation column .The distillation column is basically a MIMO process that means all the inputs and outputs are coupled to each other. It is very difficult to control such type of process so, we have to reduce or eliminate the interaction between the inputs and outputs. Therefore the process can be converted to a single input and single output system (SISO).In order to convert the MIMO system to SISO system it is necessary to design a decoupler which will eliminate the interaction among all the inputs and outputs.My focus is here to design that decoupler, which is very difficult to design when the process variables are more. It is easy when we consider TITO system. When we consider a ‘three input and three input’ and ‘four input and four output’ system it is necessary to follow some methods like RGA and RNGA methods. After getting those parameters we have to follow the ETF method so that the decoupler will be designed. After designing the decoupler, our aim to be controlled the distillation process. Here I am using PID controller to control the process. In order to design the PID controller we basically emphasized on the tuning parameters of the PID. To get the tuning parameters we must follow certain methods such as Ziegler Nichols, Cohen coon and decentralized relay feedback methods, BLT methods etc. Here we are using decentralized relay feedback method in to do the tuning of the controller. After tuned the PID .We will get the desired output what we actually want to get.The result was obtained and shown that implemented work is successfully done. Finally the interactions are rejected and the process was controlled.Here all the simulations are done by the MATLAB tool and Microsoft window 7operating syste

Chaotic Spreading Sequence for Spread Spectrum Modulation in Stochastic Wireless Channels

In wireless communication system, spread spectrum techniques have been widely used because of the advantages like robustness against interference and noise, low probability of intercept, realization of Code Division Multiple Access (CDMA) and so on. One of the key aspects in such methods is the generation of the spreading sequence which continues to be challenging issue. This paper proposes a scheme for generating binary sequences from chaotic logistic map for use in Direct Sequence Spread Spectrum (DS SS) system in fading environment. The main advantages of such usage are increased security of the data transmission and ease of generation of a extended numbers of chaotic sequences. Generally to spread the bandwidth of the transmitting signals, pseudo-noise (PN) sequences, Gold sequences have been used extensively. We have generated a binary spreading sequences using logistic map. A comparison between Gold sequences and proposed sequences in faded environment have been derived. It is clearly seen that our sequences are comparable and even superior to Gold sequences in several key aspects such as bit error rate (BER), computational time and mutual information for three different spreading code lengths. Therefore, the proposed sequences can be effectively used as spreading sequences in high data rate modulation schemes.Keywords: Logistic map code, Gold code, BER, DS SS.Cite as: Katyayani Kashyap, Manash Pratim Sarma, Kandarpa Kumar Sarma, “Chaotic Spreading Sequence for Spread Spectrum Modulation in Stochastic Wireless Channels†ADBU J.Engg.Tech., 1(2014) 0011402(5pp