Many handheld applications maintain data consistency with data sources through sychronization. In certain applications such as sales force automation, it is highly desirable if updates on the data source can be reflected at the handheld applications immediately. This paper proposes an efficient method to synchronize XML data on multiple mobile devices. Each device retrieves and caches a local c...

As multiprocessors scale beyond the limits of a few tens of processors, they must look beyond traditional methods of synchronization to minimize serialization and achieve the high degrees of parallelism required to utilize large machines. By allowing synchronization at the level of the smallest unit of memory, ne-grain synchronization achieves these goals. Unfortunately, supporting e cient ne-g...

Suppose that messages have been signed using a user's signature private key during the period of time after a key compromise but before the compromise is detected. This is a period of undetected key compromise. Various techniques for detecting a compromise and preventing forged signature acceptance are presented. Attack protection is achieved by requiring a second level of authentication for th...

A novel optical interconnection is introduced for a multistage optical switching network that uses orthogonally polarized data and address information. The network is unique in that the data information is never regenerated and remains in optical form throughout (i.e., it is never converted into electrical information). This has two main consequences: (1) the bandwidth of the data is not restri...

Todays operating systems are designed to manage multiple processes within a uniprocessor system, within several processors and even within distributed computer systems. Fundamental to this design is concurrency, especially synchronization of the activities of multiple processes. Most books on operating systems contain large chapters for this important topic. All discussed techniques therein are...

It has been known that a diffusive coupling between two limit cycle oscillations typically leads to the in-phase synchronization and also that it is the only stable state in the weak-coupling limit. Recently, however, it has been shown that the coupling of the same nature can result in the distinctive dephased synchronization when the limit cycles are close to the homoclinic bifurcation, which ...

For the anticipation of epileptic seizures synchronization between signals from intracranial recorded EEG has been studied. Here, we present our first findings for scalp EEG. For 3 epilepsy patients 85 hours of scalp EEG were analyzed. After determining the instantaneous phase with the Hilbert transform, the level of synchrony was calculated for all possible electrode pairs within 4 defined gro...

It has been known that a diffusive coupling between two limit cycle oscillations typically leads to the inphase synchronization and also that it is the only stable state in the weak coupling limit. Recently, however, it has been shown that the coupling of the same nature can result in the distinctive dephased synchronization when the limit cycles are close to the homoclinic bifurcation, which o...

The advent of multi-core processors has renewed interest in the idea of incorporating transactions into the programming model used to write multi-threaded programs. However, using lock based multi-threaded programming is hard to get right and easy to deadlock. Transactional Memory (TM) simplifies multi-threaded programming, by replacing use of locks with transactions. But, there are many proble...