in islamic republic of iran, the heating and cooling of buildings account for approximately 40% of total energy use. from the entire energy loss taking place in a building, one third of that energy loss occurs through the windows. many of today’s existing buildings are not energy efficient, and consume more energy than is needed in order to make the working and living environments comfortable. ...

Lighting algorithms for outdoor scenes suffer from the sheer geometric and lighting complexity of such environments. In this paper we introduce an efficient, hierarchical solution to the problem of outdoor illumination. Data structures and sampling algorithms are presented, permitting the integration of complex and natural objects in a hierarchical radiosity simulation system. This new approach...

The purpose of this study is to identify several areas of forensic interest within the Yahoo! Messenger application, which are of forensic significance. This study focuses on new areas of interest within the file structure of Windows Vista and Windows 7. One of the main issues with this topic is that little research has been previously conducted on the new Windows platforms. Previously conducte...

Every operating system has an underlying graphical user-interface that it supports. The graphical user-interface under UNIX is X-Windows. X-Windows has a rich and historical origin with capabilities that other GUI packages do not support. X-Windows is an important graphic tool; other tools exists that compliment X-Windows based development in one way or another. The technology behind X-Windows ...

[There are] one-story intellects, two-story intellects, and three-story intellects with skylights. All fact collectors, who have no aim beyond their facts, are one-story men. Two-story men compare, reason, generalize, using the labor of the fact collectors as their own. Three-story men idealize, imagine, predict; their best illumination comes from above, through the skylight. (Oliver Wendell Ho...