Academy of Finland

About: Academy of Finland is a government organization based out in Helsinki, Finland. It is known for research contribution in the topics: Population & Health care. The organization has 286 authors who have published 419 publications receiving 15304 citations. The organization is also known as: Finlands Akademi & Suomen Akatemia.

Symmetries of the Solar Dynamo: Comparing Theory With Observation

Abstract: Since the discovery by Schwabe in 1843 of the cyclic nature of sunspot activity, there has been a great deal of attention paid to the nature of these cycles. In 1849 Wolf established a measure of sunspot activity, the Wolf number, defined as W = k(10g + f where g is the number of sunspot groups, f is the total number of spots and k is a factor allowing comparison between different observation series. Based on this measure we have the Zurich series of Wolf numbers which extends back to 1749. Since the counts for W are taken over the whole visible surface of the sun, all information about the spatial distribution of the sunspot activity is lost. Realising the importance of such spatial information, Carrington in 1853 began the recording of the latitudes and longitudes of spots and this eventually resulted in the Greenwich series of photographic recordings of the solar surface which lasted from 1874 to 1976. Maunder introduced the famous Maunder or butterfly diagram (so called because the pattern of the cycles resembles the wings of a butterfly) which shows spot activity as a travelling wave beginning in the higher latitudes and proceeding to the equator.

An improved hardware acceleration scheme for Java method calls

Abstract: This paper presents a significantly improved strategy for accelerating the method calls in the REALJava coprocessor. The hardware assisted virtual machine architecture is described shortly to provide context for the method call acceleration. The strategy is implemented in an FPGA prototype. It allows measurements of real life performance increase, and validates the whole co-processor concept. The system is intended to be used in embedded environments, with limited CPU performance and memory available to the virtual machine. The co-processor is designed in a highly modular fashion, especially separating the communication from the actual core. This modularity of the design makes the co-processor more reusable and allows system level scalability. This work is a part of a project focusing on design of a hardware accelerated multicore Java Virtual Machine for embedded systems.

Aims of the Game

Abstract: Language is a tool for thinking and telling Its two main functions are representation and processing of information about the environment, and information transferral between users (communication)1