A Remarkable Marl Lake

Bioassay of Water from a Concretion-Forming Marl Lake

Using a pure, bacteria-free culture of Nostoc muscorum as a bioassay test organism, it was found that the water of Bass Lake, Livingston Co., Michigan, had a severe phosphate deficiency and less severe deficiencies of K, Fe, Mn, and Mg. Emission spectrographic analyses showed that the concretions had Ca as the principal constituent, Mg as the major impurity, and Fe, Si, Mn, Al, and Sr as minor ...

Future sparse interactions: a MARL approach

Recent research has demonstrated that considering local interactions among agents in specific parts of the state space, is a successful way of simplifying the multi-agent learning process. By taking into account other agents only when a conflict is possible, an agent can significantly reduce the state-action space in which it learns. Current approaches, however, consider only the immediate rewa...

Remarkable diversity of phototrophic purple bacteria in a permanently frozen Antarctic lake.

Although anoxygenic photosynthesis is thought to play an important role in the primary productivity of permanently frozen lakes in the Antarctic dry valleys, the bacterial communities responsible for this metabolism remain uncharacterized. Here we report the composition and activity of phototrophic purple bacteria in Lake Fryxell, Antarctica, as determined by analysis of a photosynthesis-specif...

Graph DSLs : A Survey on Green-Marl & Sparql

Many real world problems are formulated as graphs and standard graph processing algorithms are used to search solutions. Applications of graphs and related algorithms can be found in many domains. Domains vary from standard scientific applications to social media applications such as facebook. Creating and processing graphs in HPC environments adds lot of complexities. Hiding detail complexitie...

A Remarkable Monster