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Breast-conserving surgery is now accepted as one of the standard therapeutic options for stages I and II breast cancers. Although breast-conserving surgery can help retain a good breast shape, a long marked scar would be a disadvantage. Endoscopic surgery can be performed via a small and remote incision that becomes inconspicuous after surgery. To improve(More)
Aging leads to functional changes in the hippocampus, and consequently induces cognitive deficits, such as failure of memory. Neurogenesis in the hippocampal dentate gyrus continues throughout life, but steadily declines from early adulthood. Apoptosis occurs under various pathologic and physiologic conditions, and excessive apoptotic cell death can cause a(More)
Traditionally, the vehicle has been the extension of the man's ambulatory system, docile to the driver's commands. Recent advances in communications, controls and embedded systems have changed this model, paving the way to the Intelligent Vehicle Grid. The car is now a formidable sensor platform, absorbing information from the environment (and from other(More)
Over the past several decades, VANET has been a core networking technology to provide safety and comfort to drivers in vehicular environments. Emerging applications and services, however, require major changes on its underlying computing and networking models, which demands new network planning for VANET. This article especially examines how VANET evolves(More)
Stressful experiences, such as an unsatisfactory mother-infant relationship after delivery, can induce depressive disorders, and it is well-known that stressors impair memory function. The hippocampus plays a crucial role in memory processes. In the present study, we determined whether a depressed-like state induced by repeated separation of pups affects(More)
Due to recent technology advancements, RFID readers have been proposed for several vehicular applications ranging from safe navigation to intelligent transport. However, one obstacle to deployment is the unpredictable read performance. An RFID reader occasionally fails to read an RFID tag even in static circumstances, mostly due to collisions. In a mobile(More)
This paper proposes a novel Frequency Quorum Rendezvous (FQR) scheme for fast and resilient pre-key establishment in anti-jamming spread spectrum techniques. While nodes hop over own frequencies during the key establishment phase, using a quorum system improves their rendezvous probability and reduces time latency.
The smart grid is characterized by the two-way flow of electric power and information. For the information flow implementation and support, several wireless communication technologies and standards are being considered. Although there is no doubt that using wireless communications offers significant benefits over wired connections, the wireless technology(More)
Jamming attacks have been recently studied as wireless security threats disrupting reliable RF communication in a wireless network. By emitting noise-like signals arbitrarily on the shared wireless medium, a jammer can easily disturb the network. Countermeasures such as Frequency-Hopping Spread Spectrum enable nodes to avoid the jamming attacks by hopping(More)