Considering the importance and necessity of service discovery mechanism in the wireless sensor network, a district-based service discovery mechanism model is proposed.
基于服务发现机制在无线传感器网络中的重要性及必要性，提出了一种区域式的服务发现机制模型。
2
To explore the relationship between homestead distance to hospital and access to care and to estimate the sensitivity of hospital-based surveillance in Kilifi district, Kenya.
旨在探讨住宅离医院的距离和获取医疗服务机会之间的关系并评价肯尼亚基利菲区基于医院监测的灵敏度。
3
The report is based on an analysis of nearly 99 percent of birth records reported to 50 states and the District of Columbia as part of the National Vital Statistics System.