Benchmarking Apache Arrow Flight - A wire-speed protocol for data transfer, querying and microservices

Moving structured data between different big data frameworks and/or data warehouses/storage systems often cause significant overhead. Most of the time more than 80% of the total time spent in accessing data is elapsed in serialization/de-serialization step. Columnar data formats are gaining popularity in both analytics and transactional...

Steps towards 3D cadastre and ISO 19152 (LADM) in Israel

This paper contains the results of the 3D Cadastre and LADM (Land Administration Domain Model) investigations in context of possible future renewal of the Cadastral database at the Survey of Israel. The two topics of 3D Cadastres and LADM are highly related and therefore this paper covers both aspects. After recapturing the past 3D cadastre...

Parallel recording with optical waveguide array

We present an analysis of the reading capability of a novel optical pickup consisting of a single-mode and a multi-mode rectangular waveguide. According to the simulations, if one has prior information about the structure of the disk, superresolution readout could be achieved. The proposed system has the advantage to be compact and should be...