Faditron is a mechanical machine that is able to climb on walls (concrete and glass) of a building. The major applications in which this project deals are surveillance, inspection of bridges and buildings, window cleaning of the skyscrapers. The design is simple and supports all the above mentioned categories and is especially good for window cleaning purposes as the suction mechanism is very similar to vacuum cleaner's dirt sucking mechanism.

Data Warehouses are used to maintain and manage the historical information. Data Warehouses contains the sensitive information such as financial records, customer's values etc. That information is considered to be very important and private. Therefore, it is necessary to secure the data from unauthorized accesses. Considering the importance of data security many data security models have been introduced in past years. Security models are used to implement data security from the early stages of Data Warehouse. These models are not suitable for existing Data Warehouses. Also, these models have some shortcomings. This research will discuss the specific problems regarding the existing data security techniques. Also, this research will present a data security approach that is suitable for existing data warehouses and new data warehouses, while accessing information using OLAP tools. One key advantage of our approach is that, it will reduce the number of access checks and therefore improve the retrieval process. The analysis should help the DATAWAREHOUSE professionals and also for the students relates to DATABASE field of Computers.

The world economies especially the USA economy have recently experienced the worst financial crisis since the great depression. This crisis is a result of highly deregulated financial system and rapid financial innovations. The financial market of USA has collapsed, the housing market has been destroyed, credit market has dried up and the adverse effects on USA real economy are very clear. The future of USA economy looks very uncertain; in this study we have analyzed the causes and after effects of financial crisis, we have studied the previous trends of some key variables (financial and economics) and predicted the future of USA economy. The study also provides suggestions for the revival of the USA economy.