Neural networks have been used in the development of intelligent systems that simulate pattern recognition and object identification. Coin identification by machines relies currently on the assessment of the physical parameters of a coin. An intelligent coin identification system that uses coin patterns for identification helps preventing confusion between different coins of similar physical di...

We present the first fair e-cash system with a compact wallet that enables users to spend efficiently k coins while only sending to the merchant O(λ log k) bits, where λ is a security parameter. The best previously known schemes require to transmit data of size at least linear in the number of spent coins. This result is achieved thanks to a new way to use the Batch RSA technique and a tree-bas...

Coins are the vital part of our life. It is used at every point whether it is small cafe or in mall. So it’s our fundamental need to recognize the coins. Image Processing is a field in which working is done on images. By using this, recognition of different denomination of coins is done. For recognition, first canny edge detection is used to detect edges then Hough Transformation is used to det...

This paper presents Treasure, an outdoor mobile multiplayer game inspired by Weiser’s notion of seams, gaps and breaks in different media. Playing Treasure involves movement in and out of a wi-fi network, using PDAs to pick up virtual ‘coins’ that may be scattered outside network coverage. Coins have to be uploaded to a server to gain game points, and players can collaborate with teammates to d...

The fascinatingly wide range which the historical studies and generalizations of D. D. Kosambi cover is known to all his readers and it is indeed a measure of his great versatility that in no other area was the relationship between his ‘basic’ discipline and history as direct as in the study of coins. A Professor of Mathematics all through his teaching career and an acknowledged original contri...

The current study evaluated the effects of conditional discrimination (listener) training with coins on the emergence of novel stimulus relations, textual behavior, tacts, and intraverbals. Two preschoolers with autism were taught 3 relations among coins, their names, and values. After initial training, 4 relations emerged for the first participant and 7 for the second participant, suggesting t...

Blind signature is the concept to ensure anonymity of e-coins. Untracebility and unlinkability are two main properties of real coins, which require mimicking electronically. Whenever a user is permitted to spend an e-coin, he is in need to fulfill above requirements of blind signature. This paper proposes a proxy blind signature scheme with which a proxy is able to make proxy blind signature wh...

In the triangle of coins problem coins are arranged to create a triangle pointing down and the solution involves moving a few coins to change its orientation. The task ecology can be designed such that participants can work on it in a low interactivity environment, maintaining a mental representation of simulated moves, or in a high interactivity environment, thinking with and through a physica...

Blind signature is a concept to ensure anonymity of e-coins. Untracebility and unlinkability are ttwo main properties of real coins and should also be mimicked electronicaly. A user has fulfill above two properties of blind signature for permission to send an e-coins. During the last few years, asymmetric cryptography based on curve based cryptography have becomes very popular, especially for e...

The ‘minimal’ payment—a payment method which minimizes the number of coins in a purse—is presented. We focus on a time series of change given back to a shopper repeating the minimal payment. The delay plot shows visually that the set of successive change possesses a fine structure similar to the Sierpinski gasket. We also estimate effectivity of the minimal-payment method by means of the averag...