This paper proposes a new efficient and secure anonymous authentication scheme for mobile satellite communication systems. Compared with the related schemes, the proposed scheme achieves the following three main advantages: (1) It is just based on a secure one-way hash function for avoiding complex computations for both mobile users and network control center (NCC), (2) it does not require sensitive verification table which may cause NCC to become an attractive target for numerous attacks (e.g., insertion attacks and stolen-verifier attacks), and (3) it provides higher security level (e.g., secure mutual authentication and key establishment, confidential communication, user's privacy, simple key management, and session key independence). As a result, the proposed scheme is very suitable for lightweight-device environments because of very low computation overload on the part of both mobile user and NCC.
Background Severe damage in construction sites have been reported due to slope sliding. And it is becoming more frequent as infrastructure projects such as roads and railways in mountainous and hilly areas increase for effective land resources utilization. Landslides can cause great damage to properties, injuries and even death in severe cases because of relatively large-scale failures. The main causes of landslides are linked to geological characteristics, gravity, weather, groundwater, wave action and human actions [1]. Therefore, the areas where landslides occurred in the past and their surroundings have high probabilities of subsequent slope failures during construction due to reactivated landslides because they have similar geological and geographical conditions. Hence, it is important to identify evidence of past landslides in these areas during the design and construction phases in order to minimize project risks such as accidents, increased cost and delayed schedule. To identify evidence of landslides in the past, detailed investigations of natural slopes should be conducted to uncover the histories, to clarify critical factors that might
Practice', 'Researcher Tracing,' and 'Research Map' were implemented on our platform using a Jena framework. Our study shows that information dissemination platforms will make a meaningful contribution to the possibility of realizing a practical Semantic Web-based information dissemination platform.
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