Abstract: A circuit arrangement includes an array of switches that represent a Boolean satisfiability expression that has a plurality of clauses each defined by a combination of Boolean variables Xi or ¬Xi, a first plane, and a constraints network operatively arranged with the first plane. The constraints network enforces each of the clauses such that values of different ones of the variables continue to randomly or pseudo randomly flip until the values of the variables Xi and ¬Xi stop changing or a predetermined condition occurs.

Abstract: A tunnel automatic monitoring and measuring equipment and method based on fixed-point tour measurement are provided. The equipment includes a monitoring trolley that can move freely in the longitudinal direction of the tunnel, multiple automatic tracking and identification devices are set on the monitoring trolley, the automatic tracking and identification device is connected to the background processing system telecommunication; a monitoring points with reflective markings are arranged on the surface of the tunnel support structure, under the cooperation of the monitoring trolley and the automatic tracking and identification device, the reflective markings set on the tunnel support structure can be automatically measured at the fixed point to obtain the coordinate information of the relevant monitoring points; then, the deformation data of the support structure required in the construction process are extracted by coordinate information calculation.

Abstract: An audit trail system allows a user to configure and view an audit trail of changes that have been made to various types of information that can be accessed by one or more users in a network of computer systems. The various types of information are grouped in business components. A user can select particular business components, and fields within a business component, to be audited. The audit trail shows who has accessed the business component, the operation performed, when the operation was performed, and how the value of at least a portion of the business component was changed. Users can track when operations such as update, create, delete, and copy are performed on the selected business components, as well as track which employee modified a certain field and the data that has been changed. Users can also reconstruct records that existed at a certain point of time. Options to restrict access to audit trails by selected areas of responsibility, positions, and/or employee identifiers, can also be included.

Abstract: An audit trail system allows a user to configure and view an audit trail of changes that have been made to various types of information that can be accessed by one or more users in a network of computer systems. The various types of information are grouped in business components. A user can select particular business components, and fields within a business component, to be audited. The audit trail shows who has accessed the business component, the operation performed, when the operation was performed, and how the value of at least a portion of the business component was changed. Users can track when operations such as update, create, delete, and copy are performed on the selected business components, as well as track which employee modified a certain field and the data that has been changed. Users can also reconstruct records that existed at a certain point of time. Options to restrict access to audit trails by selected areas of responsibility, positions, and/or employee identifiers, can also be included.