Masonry structures are complex systems that require a thorough and detailed knowledge and information regarding their behaviour under seismic excitations. Appropriate modelling of a masonry structure is a prerequisite for a reliable earthquake resistant design or assessment. However, modelling a real structure to a robust quantitative (mathematical) representation is a very difficult, complex a...

-This paper based on crossplot and core data,analysis the Pu Xi oilfield ,Putao Hua oil layer ‘s conventional logging response characteristic.Based on the describe of the three cored wells, Putao Hua oil layer is mainly made up with siltstone, muddy siltstone, silty mudstone,. First normalized the well logging curves, elimination the influence of the nongeological factors to the well logging cu...

Rollback techniques that use message logging and deterministic replay can be used in parallel systems to recover a failed node without involving other nodes. Distributed shared memory (DSM) systems cannot directly apply message-passing logging techniques because they use inherently nondeterministic asynchronous communication. This paper presents new logging schemes that reduce the typically hig...

In main memory databases, fuzzy checkpointing gives less transaction overhead due to its asynchronous backup feature. However, till now, fuzzy checkpointing has considered only physical logging schemes. The size of the physical log records is very large, and hence it incurs space and recovery processing overhead. In this paper, we propose a recovery method based on a hybrid logging scheme, whic...

The distributed shared memory(DSM) system transforms an existing network of workstations to a powerful shared-memory parallel computer which could deliver superior price/performance. To provide fault tolerance to DSM system , checkpointing and logging is widely used. In this paper, we propose a novel logging scheme which greatly reduces the amount of logging by tracking the dependency informati...

This paper presents a novel logging scheme for recov-erable distributed shared memory systems. In the previous schemes, the stable logging is performed whenever a remote data value is accessed. However, in the proposed scheme, the data values are logged on the volatile storage of the writer process and only the access information between the dependent processes is logged stably. Also, to reduce...

An impulse-based single-borehole radar prototype has been developed for well logging. The borehole radar is comprised of subsurface sonde and surface equipment. An armored 7-conductor well logging cable is used to connect subsurface sonde and surface equipment which is well compatible with the other well logging instruments. The performance experiments of the prototype have been conducted in a ...

Abstract Evaluating the subground properties during initial stage of a construction building is important in order to estimate suitability soil quality technical requirements bearing capacity, resistance stress, and strength. This study presented evaluation geotechnical intended for Max IV facility Lund University, performed fieldwork laboratory. The situ methods included drilling boreholes, co...

Synchronous prestack inversion technology has been widely used to predict the fluid and lithological properties of reservoirs. Its prediction accuracy depends on seismic data quality. Ultra-deep carbonate reservoirs in Shunbei area Tarim Basin were as research objects. Based shear wave (S-wave) method, petrophysical logging analysis was carried out select physical property-sensitive elastic par...

This paper presents a causal logging scheme for the lazy release consistent distributed shared memory systems. Causal logging is a very attractive approach to provide the fault tolerance for the distributed systems, since it eliminates the need of the stable logging. However, since interprocess dependency must causally be transferred with the normal messages, the excessive message overhead has ...