International Business Machines Corporation

Niambh Scullion

Ken Maycock

Santhosh K Balasa Ramnath

Joseph M McAndrew

Clea Anne Zolotow

John Valentine Delaney

Maeve M O'Reilly

Claus Schroeder-Hansen

Niamh Phelan

A processor tracks a frequency of access requests of a first index corresponding to a first data page of a plurality of data pages stored in a database. The processor determines the first index corresponding to the first data page having a frequency of access requests that exceeds a configurable target, and the processor retains, with preference, the first data page that corresponds to the first index, within the cache memory.

Pre-caching of relational database management system based on data retrieval patterns

A tactile device for correcting biomechanical abnormalities using physical virtual reality simulations includes an outer hollow sphere, a pliable inner hollow sphere, a plurality of actuators, and a framework. The plurality of actuators physically couple the outer hollow sphere to the pliable inner hollow sphere, and are configured to reshape the pliable inner hollow sphere as the outer hollow sphere and the pliable inner hollow sphere rotate. The framework includes a plurality of powered rollers which support the outer hollow sphere and control a rotational speed and direction of the outer and inner spheres. A set of pressure sensors detect pressure applied by a user against the pliable inner hollow sphere as the user moves within. One or more processors determine a biomechanical abnormality in the user based on pressure readings from the pressure sensors. A sphere controller then modifies a physical configuration of the pliable inner hollow sphere.

Virtual reality sensory construct

A tactile device for virtual reality simulations includes an outer hollow sphere, a pliable inner hollow sphere, a plurality of actuators, and a framework. The plurality of actuators physically couple the outer hollow sphere to the pliable inner hollow sphere, and are configured to dynamically and physically reshape the pliable inner hollow sphere as the outer hollow sphere and the pliable inner hollow sphere rotate. The framework includes a plurality of powered rollers that support the outer hollow sphere and control a rotational speed and direction of the outer hollow sphere and the pliable inner hollow sphere. A sphere controller then modifies a physical configuration of the pliable inner hollow sphere based on a detected biomechanical abnormality of a user within the tactile device.

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Dublin, Ireland

Niambh Scullion