in wireless ad-hoc network, backoff is traditionally based on the IEEE binary exponential backoff algorithm. As wireless ad-hoc network is usually used in the critical situation, its efficiency and performance is significant. Since MAC is the fundamental layer the design of an efficient and high performance underlying MAC protocol is significant for the overall performance of the ad-hoc network...

The continuous improvement of sensor skill and wireless communication is encouraging wireless sensor networking. The IEEE 802.11e Medium Access Control (MAC) is upcoming standard of IEEE to support Quality of Service (QoS). The IEEE 802.11e MAC enhances the basic 802.11 MAC to provide quality-of-service support for audio and video streams. The 802.11e MAC defines a new Hybrid Coordination Funct...

We prove (nearly) tight bounds on the concrete PRF-security of two constructions of message-authentication codes (MACs): (1) The truncated CBC-MAC construction, which operates as plain CBC-MAC (without prefix-free encoding of messages), but only returns a subset of the output bits. (2) The MAC derived from the sponge hash-function family by pre-pending a key to the message, which is the de-fact...

s language Mac/ Eng Mac/ Eng Mac/ Eng Mac/ Eng Mac/ Eng Mac/ Eng Mac/ Eng Eng Frequency Semiannual Annual Semiannual Semiannual Semiannual Semiannual Semiannual Quarterly Table 1: Characteristics of the selected Macedonian medical journals.

The detectability of mycobacteria in culture by the use of nonisotopic, chemiluminescent DNA probes for Mycobacterium tuberculosis and the M. avium-M. intracellulare complex (MAC) was evaluated and compared with that by the use of 125I-labeled DNA probes for the same mycobacteria. In the assay, rRNA-directed DNA probes labeled with acridinium ester (AE-DNA probes) were used. Unhybridized probes...

A CSP lookahead search algorithm, like FC or MAC, explores a search tree during its run. Every node of the search tree can be associated with a CSP created by the refined domains of unassigned variables. If the algorithm detects that the CSP associated with a node is insoluble, the node becomes a dead-end. A strategy of pruning ”by analogy” states that the current node of the search tree can be...

The requirement of high quality service (QoS) in multi-priority industrial and domestic sensor networks poses new challenges to the increasing adoption Internet Things (IoT). In Multi-event Wireless Sensor Networks (MWSNs), nodes generate different types data packets i.e., urgent (high priority) or normal (low priority), with traffic proportions. High priority require an assurance faster transm...