The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper presents a digital watermarking algorithm for protecting vector point data from illegal use. Three rules of watermarking, i.e. usability, invisibility, and robustness, are taken into account, and corresponding measures, including shuffling image before embedding, selecting feature points, and utilizing the least significant bits (LSBs) as insertion positions, are employed to implement the...
In this paper, we propose a new and efficient cryptographic hash function based on random Latin squares and non-linear transformations. The developed scheme satisfies basic as well as desirable properties of an ideal hash function. Use of repeated lookup on Latin squares, non-linear transformations and complex shift operations further increase the strength of our cryptographic hash function at a low...
Accurate measurement of contact resistance is crucial for advanced nanometer CMOS processes. An equally important requirement is to measure contact resistances in the same micro-environment as the device-under-test (DUT) will be used in real designs. With complicated interactions among various layout shapes in nanometer CMOS processes, test structures with adequate scalability is needed. In this paper...
This paper describes a dynamic microarray device with pneumatic valves for trapping and releasing microbeads selectively. We fabricated thin membranes of polydimethylsiloxane (PDMS) inside our conventional dynamic microfluidic device. The membrane works as a pneumatically driven valve that changes the fluidic resistance, which ultimately determines the modes of the device: trapping, passing, or releasing...
The objective of the present study was the analysis of microarray data from a T-cell leukemia cell line (CCRF-CEM), treated with two different prednisolone concentrations, using four different pre-processing methods, within the Matlabreg computing environment. We have compared these methods using hierarchical clustering. The gene expression patterns revealed by hierarchical clustering were used to...
We present the use of swept wavelength interferometry for distributed fiber-optic temperature measurements in a nuclear reactor. The sensors consisted of 2-m segments of commercially available, single mode optical fibers. The interrogation technique is based on measuring the spectral shift of the intrinsic Rayleigh backscatter signal along the optical fiber and converting the spectral shift to temperature.
This paper proposes an advanced incremental conductance MPPT algorithm with a variable step size for a solar array regulator (SAR) system. This approach adjusts automatically a step size to the solar array operating point, thus improving the MPPT (maximum peak power tracking) speed and accuracy compared with the conventional method with a fixed step size. For the analysis of stability of the proposed...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.