Vacuuming the Periplasm

Vacuuming the periplasm.

Vacuuming Temporal Databases

A wide range of real-world database applications, including financial and medical applications, are faced with accountability and trace-ability requirements. These requirements lead to the replacement of the usual update-in-place policy by an append-only policy, yielding so-called transaction-time databases. With logical deletions being implemented as insertions at the physical level, these dat...

A Situated Vacuuming Robot

We undertook this project as an opportunity to explore design ideals of the embodied approach. At our disposal was a Pioneer robot and its Saphira software (ActivMedia 1996). Similar to subsumption architecture (Brooks 1986), the Saphira software tackles the dilemma of how to implement layered control design within a system which is inherently centralized. Brooks saw each layer as a simple and ...

19 Vacuuming Christian

Base tables supporting transaction time are ever-growing because all logical updates, including deletions, transform into insertions at the physical level. This contrasts snapshot tables where logical and physical deletion coincide. Logical deletion in TSQL2 was covered in 16. As there is a need for physical deletion capabilities in snapshot tables (and valid-time tables), there is also a need ...

MICE and the Science of Vacuuming

Artificial intelligence and robotics are fields notorious for developing many different systems that are never compared with each other in a quantitative way. This paper suggests that the task of vacuum-cleaning could be used as a benchmark for comparing different robot systems. Such a comparison should take place within a simulation environment, which is outlined in the paper. This paper also ...