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| | | | Wi-Fi, Bluetooth, Zigbee and WiMaxThe advent of ubiquitous computing and the proliferation of portable computing devices have raised the importance of mobile and wireless networking. Recently, there has been a tremendous interest in broadband wireless access systems, including wireless local area networks (WLANs), broadband wireless access, and wireless personal area networks... |
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Field Emission in Vacuum Microelectronics (Microdevices)
The field electron emission (FEE) is a unique quantum-mechanical effect of electrons tunneling
from a condensed matter (solid or liquid) into vacuum. The efficiency of this emission
process is tens of millions of times higher than in other known emission processes. The
extremely high current density in FEE and the fact that no... | | Information Systems Reengineering and IntegrationThe strategic importance of information systems is now widely accepted, and over the last three decades these systems have received considerable investment. Systems have evolved from file systems, through database systems, to the emergence of Management Information Systems (MIS) and more recently Executive Information Systems (EIS). With the... | | WAN Survival Guide: Strategies for VPNs and Multiservice NetworksEnsure that your WAN can handle the latest technologies with this must-have strategy guide If a Wide Area Network (WAN) isn't set up properly, it won't be able to meet the needs of the applications being used in the Local Area Network (LAN). And with the emergence of new technologies such as VPNs, multi-service networks, and... |
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Advances in Security and Payment Methods for Mobile CommerceRecently, the emergence of wireless and mobile networks has made possible the admission of electronic commerce to a new application and research subject: mobile commerce, defined as the exchange or buying and selling of commodities, services, or information on the Internet through the use of mobile handheld devices. In just a few years, mobile... | | | | |
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