WiMedia UWB 技术追踪

采用WiMedia UWB标准的越来越多 WiMedia通用无线电平台是实现传输速率高达480Mb／s（更高的传输速率正在开发中）无线个人局域网（WPAN）的基础。这个平台并不局限于某一类应用，而是允许同时存在不同的协议适配层，如图1所示。WiMedia规范既规定了一些如无线USB之间相互通信的应用，也规定其他不相互通信的接口同时存在的应用。     

电源通路管理器集成电路提供高压保护

描述电源通路管理器ICs的特点和应用.     

Incorporating social support into a community-wide smoking-cessation contest

Exposure to foreign particles sometimes causes inflammatory reactions through production of cytokines and chemoattractants by phagocytic cells. In this study, we focused on macrophage migration inhibitory factor (MIF) to evaluate its pathophysiological role in the phagocytic process. Immunohistochemical analysis of human pseudosynovial tissues retrieved at revision of total hip arthroplasty showed that infiltrating mononuclear and multinuclear cells were positively stained by both an anti-CD68 antibody and anti-human MIF antibody. For in vitro study, MIF was released from murine macrophage-like cells (RAW 264.7) in response to phagocytosis of fluorescent-latex beads in a particle dose-dependent manner. Northern blot analysis showed marked elevation of the MIF mRNA level in the phagocytic macrophage-like cells. Moreover, pretreatment of RAW 264.7 cells with rat recombinant MIF increased the extent of phagocytosis by 1.6-fold compared with the control. Taken together, these results suggest that MIF plays an important role by activating macrophages in autocrine and paracrine fashion to phagocytose foreign particles.     

Visual insights into high-resolution earthquake Simulations.

This study focuses on the visualization of a series of large earthquake simulations collectively called TeraShake. The simulation series aims to assess the impact of San Andreas Fault earthquake scenarios in Southern California. We discuss the role of visualization in gaining scientific insight and aiding unexpected discoveries.     

Trouble at the Telco: When GSM Goes Bad

GSM is a series of standards defining various aspects of mobile voice and data communications. These standards provide a framework that looks set to underlie modern mobile business communications well into the 21st century.     

Dynamic structure-soil-structure interaction by FEM and BEM

The dynamic interaction, through the underlying or surrounding soil, between three-dimensional structures has been investigated, by coupling finite and boundary elements. The structures are discretized by finite elements, and the infinite soil is represented by boundary elements. A harmonic force is applied on both mass-lumped structures and mass-distributed structures. On the basis of our numerical studies, we further indicate the effects of distance, direction of alignment between two foundations, bedrock, natural frequency of the system and the location of load on the dynamic responses of structure-soil-structure interaction systems.