There is a real and driving need to integrate the disparate automation technologies in excavation for space mining. This paper describes the mining process on Earth as would be applied on another planetary body. Current technologies, commercial and research, are evaluated for their ability to autonomously carryout a task integrate with other tasks. A synthesized conceptual system design is cons...

In the present study, CDM host countries are classified according to their attractiveness for CDM non-sink projects. A cluster analysis is conducted based on three different factors determining host country attractiveness (mitigation potential, institutional CDM capacity and general investment climate) in order to elaborate a CDM host country classification. The results suggest that only a smal...

*Corresponding author. Address at the end of text Abstract Background: The aim of this study was to analyze the physical and technical activities of elite soccer players from the French First League, according to their playing positions. Methods: During the 2005-2006 season, 3540 professional soccer players’ activities were recorded and analysed during competitive matches played by means of a s...

We have performed a multi-species hydrodynamical simulation of the formation and evolution of Ly clouds in a at CDM dominated universe with an external ux of ionizing radiation. We solve the fully coupled non-equilibrium rate equations for the following species: H, H + , H , H 2 , H + 2 , He, He + , He ++ , and e . The statistical properties of the distribution and evolution of both hydrogen an...

Grading systems are often introduced to address the classic adverse selection problem associated with asymmetric information about product quality. However, grades are rarely measured perfectly, and adverse selection outcomes may persist due to grading error. We study the effects of errors in grading, focusing on asymmetric grading errors-namely when low-quality product can erroneously be class...

We demonstrate that a suitable coupling between a quintessence scalar field and a pressureless cold dark matter (CDM) fluid leads to a constant ratio of the energy densities of both components which is compatible with an accelerated expansion of the Universe. PACS number: 98.80.Hw

We place additional constraints on the three parameters of the dark matter halo merger rate function recently proposed by Parkinson, Cole & Helly by utilizing Smoluchowski’s coagulation equation, which must be obeyed by any binary merging process which conserves mass. We find that the constraints from Smoluchowski’s equation are degenerate, limiting to a thin plane in the three dimensional para...

We consider double-inflationary models with two noninteracting scalar fields, a light scalar field φl with potential 1 2m 2 l φ 2 l and a heavy scalar field φh with potential λ n φh with n = 2, 4. CDM with the initial spectrum of adiabatic perturbations produced in these models is compared with observations. These models contain two more free parameters than the standard CDM model with an initi...

Hierarchical clustering models of cold dark matter (CDM) predict that about 5% 10% of a galaxy-sized halo with mass ∼ 10 solar masses (M⊙) resides in substructures (CDM subhalos) with masses ∼ < 108M⊙. To directly identify such substructures, we propose to observe radio continuum emission from multiply imaged QSOs using VSOP-2 with a high angular resolution.

It is well known that the mass function for halos in CDM cosmology is a relatively steep power law (n(M) ∝ M) for low masses, possibly too steep to be consistent with observations. But how steep is the galaxy mass function? We have analyzed the stellar and gas mass functions of the first massive luminous objects formed in a ΛCDM universe, as calculated in the numerical simulation described in G...