Using the idea behind the Tillich-Zémor hash function, we propose a new hash function. Our hash function is parallelizable and its collision resistance is implied by a hardness assumption on a mathematical problem. Also, it is secure against the known attacks. It is the most secure variant of the Tillich-Zémor hash function until now.

companies participating in the project are gratefully acknowledged for their financial support. Project partners from the Lappeenranta University of Technology (LUT) are acknowledged for the design, manufacturing and testing of the power conversion unit. The Aalto University Department of Engineering Design and Production is acknowledged for their participation in the mechanical design of the B...

In this paper we are investigating the long time behaviour of the solution of a mutation competition model of Lotka-Volterra’s type. Our main motivation comes from the analysis of the Lotka-Volterra’s competition system with mutation which simulates the demo-genetic dynamics of diverse virus in their host : dvi(t) dt = vi [

On Oct 21–22, 2013, stakeholders in newborn health convened in Istanbul, Turkey, to discuss how to accelerate the implementation of kangaroo mother care (KMC) globally. Focused attention on newborn deaths, which now account for 44% of under-5 mortality, is required to accelerate progress toward Millennium Development Goal 4 (to reduce child mortality by twothirds) and beyond. KMC has been prove...

We demonstrate EKG, a collection of tools and back-end infrastructure for creating custom, domain specific knowledge graphs. The toolkit is geared toward enterprises and government organizations where domain specific knowledge graphs are often not available. During the demo, audience members will be able to ingest their own documents and instantiate their own knowledge graphs and update them in...

We report the discovery of a new X-ray transient AGN, RX J1624.9+7554. This object appeared to be bright in the ROSAT All-Sky Survey, but had turned off in two pointed observations about one and a half years later. The optical identification spectrum shows a non-emission line spectrum of a spiral galaxy at z=0.064. We will discuss several hypotheses that can explain the peculiar behaviour of th...

TweetGenie is an online demo that infers the gender and age of Twitter users based on their tweets. TweetGenie was able to attract thousands of visitors. We collected data by asking feedback from visitors and launching an online game. In this paper, we describe the development of TweetGenie and evaluate the demo based on the received feedback and manual annotation. We also reflect on practical ...