Redefining tactical operations for MER using cloud computing
The Mars Exploration Rover Mission (MER) includes the twin rovers, Spirit and Opportunity, which have been performing geological research and surface exploration since early 2004. The rovers' durability well beyond their original prime mission (90 sols or Martian days) has allowed them to be a valuable platform for scientific research for well over 2000 sols, but as a by-product it has produced new challenges in providing efficient and cost-effective tactical operational planning. ***
Cloud-user security based on RSA and MD5 algorithm for resource attestation and sharing in java environment
The increased degree of connectivity and the increasing amount of data has led many providers and in particular data centers to employ larger infrastructures with dynamic load and access balancing. This lead to the demand of cloud computing. But there are some security concerns when we handle and share data in the cloud computing environment. In this paper we propose a new cloud computing environment where we approach a trusted cloud environment which is controlled by both the client and the cloud environment admin. Our approach is mainly divided into two parts. First part is controlled by the normal user which gets permission by the cloud environment for performing operation and for loading data. Second part shows a secure trusted computing for the cloud, if the admin of the cloud want to read and update the data then it take permission from the client environment. This provides a way to hide the data and normal user and can protect their data from the cloud provider. This provides a two way security protocol which helps both the cloud and the normal user. For the above concept we apply RSA and MD 5 algorithm. When the cloud user upload the data in the cloud environment, the data is uploaded in encrypted form using RSA algorithm and the cloud admin can decrypt using their own private key. For updating the data in the cloud environment admin request the user for a secure key. Cloud user sends a secure key with a message digest tag for updating data. If any outsiders perform a change in the key, the tag bit is also changed indicating the key is not secure and correct.
Initial Results from the Mini-TES Experiment in Gusev Crater from the Spirit Rover
The Miniature Thermal Emission Spectrometer (Mini-TES) on Spirit has studied the mineralogy and thermophysical properties at Gusev crater. Undisturbed soil spectra show evidence for minor carbonates and bound water. Rocks are olivinerich basalts with varying degrees of dust and other coatings. Dark-toned soils observed on disturbed surfaces may be derived from rocks and have derived mineralogy (±5 to 10%) of 45% pyroxene (20% Ca-rich pyroxene and 25% pigeonite), 40% sodic to intermediate plagioclase, and 15% olivine (forsterite 45% ±5 to 10). Two spectrally distinct coatings are observed on rocks, a possible indicator of the interaction of water, rock, and airfall dust. Diurnal temperature data indicate particle sizes from 40 to 80 μm in hollows to ∼0.5 to 3 mm in soils.