Today’s computer is often infected by malwares and conventional communication channels such as inter-process (IPC) are attractive attack surface for attackers because important information user’s personal data passwords transmitted between processes over IPC. In addition, there no other protection than the access control mechanism provided underlying OS, but it not always sufficient. To improve...

Both a self-certified public key and a verifiable self-certified public key need not be accompanied with a certificate to be authenticated by other users. To validate these public keys, it is required that key generation center’s public key trusted by users. If all users trust same key generation center, public key can be validated simply. But among users in different domains, trusty relationsh...

Scalability is one of the most important requirements for secure multicast in a multi-group environment. In this study, we propose a decentralized multi-group key management scheme that allows each multicast group sender to control the access to its group communication independently. Scalability is enhanced by local rekeying and inter-working among different subgroups. The group key secrecy and...

In OFDM systems, residual inter-block interference can be suppressed by a time-domain equalizer that blindly shortens the effective length of a channel impulse response. To further improve the performance of blind equalizers, we propose a channel shortening method that attempts to maximize the minimum FFT output power over data subcarriers. Simulation results indicate that the max-min strategy ...

In this letter, we propose a blind adaptive algorithm for joint compensation of inter-block interference (IBI) and frequencydependent IQ imbalance using a single time-domain equalizer. We combine the MERRY algorithm for IBI suppression with the differential constant modulus algorithm to compensate for IQ imbalance. The effectiveness of the proposed algorithm is shown through computer simulation...

abstract:the paper begins by noting that proposals involving significant developments in the regional tradearchitecture are being developed within regional processes that in some cases are simultaneouslypursuing other dimensions of regional economic integration: monetary and financial cooperation inthe case of asean + 3, and the establishment of a common market in the case of asean. at leastthr...

abstract background: transcranial doppler ultrasonography results have not been previously studied in among iranian sickle cell anemia patients. the present study was performed to evaluate the pattern of intracranial flow velocities among iranian children with sickle cell anemia and the hematological parameters that can affect the time-averaged mean of maximum velocity in major intracranial art...

non-hodgkin lymphoma is very uncommon in infancy and skin as the primary site of involvement in non-hodgkin lymphoma is rarely encountered. we describe a 10-month-old infant with t-cell non-hodgkin lymphoma who presented with multiple skin nodules as the predominant feature of her disease. the clinical manifestations, treatment strategy and disease outcome are reviewed. key words: non-hodgkin l...

â  â  â  â â â  methods of speakers' effects on the audience â  â nasrollah shameli * â  fariba hosayni ** â â â  abstract â  this article is focused on four issues. the first issue is related to the speaker's external appearance including the beauty of face, the power of his voice, moves and signals by hand, the stick and eyebrow as well as the height. such characteristics could have...