منابع مشابه
Penny-Packing and Two-Dimensional Codes
We consider the problem of packing n equal circles (i.e. pennies) in the plane so as to minimize the second moment U about their centroid. These packings are also minimal-energy two-dimensional codes. Adding one penny at a time according to the greedy algorithm produces a unique sequence of packings for the first 75 pennies, and appears to produce optimal packings for infinitely many values of ...
متن کاملTrash Compaction
Let P be a set of n objects on a square grid. A push is a transformation of P that involves sweeping a horizontal or vertical line by one unit, starting from the hull of P , displacing objects in the direction of the sweep. For example, when pushing to the right, all the leftmost objects are displaced one unit to the right. This in turn displaces other objects further right. Given P , we want t...
متن کامل2003 Penny sort
The goal of the PennySort benchmark is to reflect the progress done by technology, in particular, evolvement of I/O OS subsystems and file systems. This benchmark measures what data volume can be sorted for “one penny” on a system, which cost is distributed over three years. This work decribes how to build a cost-effective system for this competition, using our high-performance external algorit...
متن کاملPenny: Secure, Decentralized Data Management
Structured, peer-to-peer (P2P) networks scalably support efficient data-retrieval operations over large data sets without resorting to centralized servers that may be vulnerable to attack or failure. However, data confidentiality policies, such as data ownership privacy, are difficult to enforce reliably in these networks. This paper presents Penny, a structured P2P network that efficiently sup...
متن کامل3617P HYONA - trash
Visual scenes typically contain many objects that compete for the control of attention and saccades, on the basis of their intrinsic salience (exogenous control) or their relevance for the goals of the observer (endogenous control). The present chapter reviews the evidence regarding the relationship between endogenous and exogenous attention and saccades. Furthermore, a competitive integration ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Journal of the Rutgers University Libraries
سال: 2012
ISSN: 0036-0473
DOI: 10.14713/jrul.v34i2.1518