IEEE 802.15.4 is one of the most prominent MAC protocol standard designed to achieve low-power, low-cost, and low-rate wireless personal area networks. The contention access period of IEEE 802.15.4 employs carrier sense multiple access with collision avoidance (CSMA/CA) algorithm. A long random backoff time causes longer average delay, while a small one gives a high collision rate. In this pape...

Multigroup neutron transport models can be significantly faster than continuous energy methods. While minimizing the number of groups improves runtime, this causes accuracy a calculation to become strongly dependent on selected group boundaries. Machine learning exceed human performance range classification tasks. In work, potential for supervised machine classify few-group structures is evalua...

Packet error in the IEEE 802.11 network is one source of performance degradation and its variability. Most of the previous works study how collision avoidance and hidden terminals affect 802.11 performance metrics, such as probability of a collision and saturation throughput. In this paper we focus on the effect of packet errors on capacity and variability of the 802.11 MAC protocol. We develop...

This paper presents a new powerful side-channel cryptanalytic method algebraic collision attacks representing an efficient class of power analysis being based on both the power consumption information leakage and specific structure of the attacked cryptographic algorithm. This can result in an extremely low measurement count needed for a key recovery. The algebraic collision attacks are well ap...

Absolute attachment cross sections of single water molecules onto mass-selected protonated water clusters have been measured in the 30-200 size range and for collision energies down to approximately 50 meV. The major surprise is that the attachment cross sections are always smaller or equal to the hard sphere cross section. The attractive interaction between water molecules and charged water na...

Packet error in the IEEE 802.11 network is one source of performance degradation and its variability. Most of the previous works study how collision avoidance and hidden terminals affect the IEEE 802.11 performance metrics, such as probability of a collision and saturation throughput. In this paper we focus on the effect of packet errors on capacity and variability of the IEEE 802.11 MAC protoc...

128-EIA3 is an integrity algorithm considered for adoption as a third integrity algorithm by European Telecommunication Standard Institute (ETSI) for 4th generation of GSM networks.128-EIA3 is vulnerable to birthday forgery attack. Birthday forgery attack requires minimum 2 known message-MAC pairs for finding collision in 128-EIA3. 128-EIA3 is susceptible to internal collision of its universal ...