Shruti Speak's

SYMMETRIC ENCRYTION Symmetric encryption is the oldest and best technique that contains a secret key (a number, a word, or just a string)of random letters. This key is applied to the text of a message to change the content. Secret key is used to encrypt and decrypt the message by the sender and receiver. ·        Same digital key is used by sender and receiver to encrypt and decrypt message ·        Different set of keys are required for each transaction ·        Length of binary key is used to encrypt data ·        Advanced Encryption Standard (AES) – Most widely used symmetric key encryption. It uses 128,192, and 256-bit encryption keys ·        Other standards use keys with up to 2,048 bits ·        It provides confidentiality of the message . ·        Th...

  E-Commerce (Assignment) 1. What is the future of Indian E-commerce? 2. What are the key drivers for Indian e-commerce? 3. Case Studies Retail,Travel,Auctions. 4. Advantage and Disadvantages of E-commerce? 5. What are the enablers of Indian e-commerce?

Queuing Theory A flow of "customers" from infinite/finite population towards the service facility forms a queue or waiting line on account of lack of capability to serve them all at a time.These "customers" may be persons waiting at a railway booking office,these may be machines waiting to be repaired or letters arriving at a typist's desk. Queuing Theory is the mathematical study of waiting lines,or queues.It examines every component of waiting in line to be served, including the arrival process, service process, number of servers, number of system places and the number of customers. It is used to develop more efficient queuing systems that reduce customer wait times and increase the number of customers that can be served. Applications Queuing theory has its origins in research by Agner Krarup Erlang when he created models to describe the Copenhagen telephone exchange. The ideas have since seen applications including telecommunications, traffi...

Inventory theory is concerned with the design of inventory systems to minimize costs. Observation of almost any company balance sheet reveals that a very significant part of its assets comprise inventories of raw materials, products within the production process, or finished products. How do companies use operations research to improve their inventory policy for when and how much to replenish their inventory? They use scientific inventory management comprising of the following steps: 1. Formulate a mathematical model describing the behavior of the inventory system. 2. Seek an optimal inventory policy with respect to this model. 3. Use a computerized information processing system to maintain a record of the current inventory levels. 4. Using this record of current inventory levels, apply the optimal inventory policy to signal when and how much to replenish inventory. The mathematical inventory models used with this approach can be divided into two broad categories—...

1)    SALES REVENUE MODEL- A company gets the revenue by             selling goods, information or services.          Examples:          Marketplaces- buy.com                                  Etsy.com          Live-shopping- iBood          Shopping Clubs- brand4friends                                      Ventre-privee.com 2)    ADVERTISING REVENUE MODEL- A company provides a forum for advertisements and receive...