In this paper, we discuss our work aiming at experimenting adaptation via mechanisms of selection in artiicial worlds (artiicial darwinism). We use J. Holland's Echo as the experimental platform. These experimentations have been performed along two ways. First, an initial cell having been injected in the world, we basically let the system evolves by itself to observe and analyze what the system...

Localization with landmarks is a recurrent problem in robotics. In order to perceive the environment, robots are often equipped with some exteroceptive sensors (such as camera, laser range finder, etc). One way of using these sensors for localization is to detect some features in the environment and to use them as landmarks. In this paper, we present how we tackle the complete set up of a fast,...

We use mock Sunyaev-Zel’dovich effect (SZE) maps to investigate how well the Planck mission might find and characterize clusters of galaxies. We discuss different combinations of frequency maps and different methods for identifying cluster candidates. The resulting catalogues are not complete even for relatively high mass thresholds, but the full sky nature of the mission ensures a large sample...

Public blockchains are becoming a ubiquitous network service. However, it's hard to make consensus-breaking changes to production blockchain networks. To overcome this, we created Virtualchain, a logical layer for implementing arbitrary fork*-consistent replicated state machines (RSMs) on top of already-running blockchains. Blockchains provide a totally-ordered, tamper-resistant journal of stat...

Semantic Web is expected to become an enhanced information foundation for both humans and machines. Once data on the WWW is annotated with machine understandable metadata linked to ontology, complex tasks can be automated using software agents. Among the issues surrounding the Semantic Web, difficulties in designing metadata act as a bottleneck to widespread adoption of the Semantic Web. This i...

In many real-life applications of house allocation problems, whenever an existing tenant wants to move, he needs to give up his current house before getting another one. This practice discourages existing tenants from such attempts and results in loss of potentially large gains from trade. Motivated by this observation, we propose a simple mechanism that is Pareto efficient, individually ration...

---Data Mining and Data Warehousing are two most significant techniques for pattern detection and concentrated data management in present technology. ELearning is one of the most important applications of data mining. The foremost idea is to provide a proposal for a practical model and architecture. The standards and system structural design are analyzed here. This paper provides importance to ...

E-commerce development is described in literature with reference to divergent points of views having many insufficiencies. In order to palliate these limits, this paper proposes a new construct, namely floors, corresponding to growing development levels. This construct permits e-commerce development influencing factors analysis. This paper proposes a model specifying factors influencing e-comme...