Earthquake Mitigation: an Application of Wireless Sensor Networks

The high number of victim as the result of earthquake disaster needs some intentions in the technology application. The mitigation scheme to reduce the destruction caused by earthquake is developed. This paper describes the theoretical and empirical concepts of wireless sensor networks for earthquake mitigation applications. First, the existing researches about earthquake mitigation using wireless sensor networks are explored, and a review of each technique and system is provided. Then, the influencing factors which affect the result for each technique are explained. The comparison of the efficient system for earthquake mitigation for each technique and system is emphasized

A survey of localization in wireless sensor network

Localization is one of the key techniques in wireless sensor network. The location estimation methods can be classified into target/source localization and node self-localization. In target localization, we mainly introduce the energy-based method. Then we investigate the node self-localization methods. Since the widespread adoption of the wireless sensor network, the localization methods are different in various applications. And there are several challenges in some special scenarios. In this paper, we present a comprehensive survey of these challenges: localization in non-line-of-sight, node selection criteria for localization in energy-constrained network, scheduling the sensor node to optimize the tradeoff between localization performance and energy consumption, cooperative node localization, and localization algorithm in heterogeneous network. Finally, we introduce the evaluation criteria for localization in wireless sensor network

20 Years Of Progress In Dengue Hemorrhagic Fever And Other Arboviral Diseases Research

Throughout the 20 year history of U.S. Naval Medical Research Unit No. 2 Detachment (NAMRU), many viruses and viral diseases have been studied. The greatest emphasis has been in the field of arboviruses, specifically dengue virus, chikungunya virus, and Japanese B encephalitis virus. The initial focus of the work was to define the extent of the threat posed by these viruses. Studies were conducted to determine antibody prevalence, and to determine the etiologies of infectious febrile disease in hospitalized patients. Later the work advanced into more specific areas, especially the entomologic and clinical components of these viruses. Little was known of the incidence or kind of arbovirus infections in Indonesia when NAMRU was established. Previous serological studies had used the cross reactive haemagglutination assay. Green et al. in 1973 provided convincing serological evidence of infections with chikungunya virus and group B arboviruses by using the specific virus neutralization assay. These results demonstrated the need for further studies to isolate the causative agent, to describe the epidemiology, and to investigate the clinical features of the associated disease