This paper proposes a set of new techniques to improve the implementation of the SHA-2 hashing algorithm. These techniques consist mostly in operation rescheduling and hardware reutilization, allowing a significant reduction of the critical path while the required area also decreases. Both SHA256 and SHA512 hash functions have been implemented and tested in the VIRTEX II Pro prototyping technol...

We present the Mimetic Methods Toolkit (MTK), an object-oriented Application Programming Interface implementing Mimetic Finite Differences to assist in the development of scientific applications, where the numerical solution of Partial Differential Equations is required. The MTK’s design is based on a variant of the Castillo–Grone Method for the construction of discrete differential operators t...

Location based push services will offer customers the possibility to select geographical regions for their services or to distribute information to them. A convenient way to disseminate information in a geographical region is the utilization of geographical routing. Messages can be forwarded via geometrical operations through a carrier access network to the mobile devices in a selected region. ...

The Covid-19 pandemic has highlighted the need for governments and health administrations at all levels to have an open data registry that facilitates decision-making in planning management of resources provides information citizens on evolution epidemic. concept “open data” includes possibility reutilization by third parties. Space time are basic dimensions used structure interpret variables r...

A DC-DC step-up micro power converter for solar energy harvesting applications is presented. The circuit is based on a switchedcapacitor voltage tripler architecture with MOSFET capacitors, which results in an area approximately eight times smaller than using MiM capacitors for the 0.13μm CMOS technology. In order to compensate for the loss of efficiency, due to the larger parasitic capacitance...

Rat lymphocytes in mixed cultures can reutilize tritiated thymidine from labeled granulocytes. Shortly after thymidine injections in vivo, major effects on the frequency of labeled lymphocyte mitoses in peripheral blood cultures are introduced by 10-20% polymorph contamination, even though transfer of label via supernates is not demonstrable. Cold thymidine in the cultures prevents reutilizatio...

LTE System is emerging wireless technology which offers reallocation and reutilization of the unused subcarriers. Not all the network runs with highest load at all the time. Therefore part of subcarrier always remains unused. In a multi radio environment LTE System allows the user to request for subcarrier while roaming from another service provider. In case the service provider has free subcar...

As being a representative mobile operating system in the world, Android OS has been part of users’ daily life. Unfortunately, the rapid expansion of Android third-markets introduces malware aiming at Android applications at an alarming rate, which poses great threats to its users. Current research about the privacy leakage in Android mostly focuses on Activity, Service and Content Providers. Li...

In this study, various types of ionic liquids (ILs) were examined for catalytic activity in the pyrolysis of cellulose for the production of levoglucosenone, which is a valuable and versatile compound for the synthesis of a variety of novel compounds. Cellulose was simply mixed with the ILs and subjected for the pyrolysis, typically at 300 °C, to produce volatile products, including levoglucose...