In emerging analytical database applications that deal with large sets of multidimensional static data sets, the performance of the query system significantly depends on the performance of its access methods and the underlying disk system. In recent years, hard disks are manufactured with multiple physical zones, where seek times and data transfer rates vary significantly across the zones. Howe...

In this paper, we describe the problem of checking the integrity of a hard disk for forensics investigation after the computer of a suspect has been seized. Existing solutions do not provide a satisfactory solution to solve the problem. They either require a huge amount of storage to store the hash values of the sectors or may not be able to cope with the situation in an effective way in case s...

Steganographic methods allow the covert exchange of secret data between parties aware of the procedure. The cloud computing environment is a new and hot target for steganographers, and currently not many solutions have been proposed. This paper proposes CloudSteg which is a steganographic method that allows the creation of a covert channel based on hard disk contention between the two cloud ins...

This paper describes the areal density (bits per unit area) roadmap goals for tape based magnetic recording (TAPE) and uses these goals as counterpoints for the areal density roadmap strategies for Hard Disk Drive (HDD) and NAND flash. Technology comparisons described in this paper will show that presently volumetric densities (bits per unit volume) for TAPE, HDD, and NAND are similar and that ...

These files must be imperatively located in the same folder. There is no other requirement for the installation. However, creating a specific directory for these files may be a good practice. Indeed, the program creates a few temporary files in this directory. They are normally deleted, but if the program fails to reach its end for any reasons, some of these files may remain on the hard disk (n...

In this paper, several types of iterative learning control (ILC) schemes for hard disk drive (HDD) control, including previous cycle learning (PCL), current cycle learning (CCL) and their combination, are designed and analyzed under the sampled-data environment. The feedback loop of the CCL stabilizes the system in time domain while the PCL guarantees the convergence along the iteration axis. T...

Firms in the hard disk drive industry are continually engaging in R & D and improving the quality of their products. We explore various determinants of the product innovation incentives for firms concerned with both their static and expected future profitability. We estimate the observed innovation outcomes as a function of market condition variables which have significant impact on innovation ...

The most common forensic activity is searching a hard disk for string of data. Nowadays, investigators and analysts are increasingly experiencing large, even terabyte sized data sets when conducting digital investigations. Therefore consecutive searching can take weeks to complete successfully. There are two primary search methods: index-based search and bitwise search. Index-based searching is...

We study the Lyapunov exponents for a moving, charged particle in a two-dimensional Lorentz gas with randomly placed, non-overlapping hard disk scatterers placed in a thermostatted electric field, ~ E. The low density values of the Lyapunov exponents have been calculated with the use of an extended Lorentz-Boltzmann equation. In this paper we develop a method to extend these results to higher d...

The proposed research analyzes industry evolution with disruptive innovations, in which conventional technologies are replaced by new (but initially inferior) technologies. The goal is to understand the relationship between competition and innovation, for the purpose of designing pro-innovation competition policies. I develop a dynamic industry equilibrium model in which rms can invest in the q...