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A method for scheduling activities in a manufacturing system includes defining a plurality of observed states associated with the manufacturing system. State estimates are generated for the observed states. Uncertainty values for the state estimates are generated. A plurality of candidate schedules

A method for scheduling activities in a manufacturing system includes defining a plurality of observed states associated with the manufacturing system. State estimates are generated for the observed states. Uncertainty values for the state estimates are generated. A plurality of candidate schedules for performing activities in the manufacturing system is identified. Changes to the uncertainty values are predicted based on the candidate schedules. One of the candidate schedules is selected based on the predicted changes to the uncertainty values.

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A method for scheduling activities in a manufacturing system includes defining a plurality of observed states associated with the manufacturing system. State estimates are generated for the observed states. Uncertainty values for the state estimates are generated. A plurality of candidate schedules

A method for scheduling activities in a manufacturing system includes defining a plurality of observed states associated with the manufacturing system. State estimates are generated for the observed states. Uncertainty values for the state estimates are generated. A plurality of candidate schedules for performing activities in the manufacturing system is identified. Changes to the uncertainty values are predicted based on the candidate schedules. One of the candidate schedules is selected based on the predicted changes to the uncertainty values. postural change via the cross-check parameter. 14. The method of claim 13, wherein the detecting comprises: monitoring positional data generated by a 3D accelerometer; and detecting, from the positional data, the change from the horizontal position to the upright position. 15. The method of claim 13, wherein the detecting comprises detecting the change for a specified period of time.16. The method of claim 13, wherein the confirming comprises detecting changes in an evoked response amplitude.17. The method of claim 13, wherein the determining a cross-check parameter is selected from a group of parameters comprising stroke volume, a cardiac impedance parameter, evoked response integral, ventricular wall thickness, ventricular pressure, atrial evoked response amplitude, and atrial evoked response integral.18. The method of claim 13, wherein the confirming comprises: monitoring an evoked response parameter (ERP) functionally related to an evoked response amplitude (ERA); computing a delta ERP (&Dgr;ERP) as a function of the ERP and a moving average of the ERP; and evaluating the &Dgr;ERP computed at approximately a time when the position parameter indicates the change in the patient's position. 19. The method of claim 13, further comprising adjusting the cardiac pacing rate back toward the first pacing rate.20. The method of claim 13, further comprising adjusting the cardiac pacing rate back toward the first pacing rate after a predetermined amount of time.21. One or more computer-readable media having computer-readable instructions thereon which, when executed by a programmable stimulation device, cause the stimulation device to execute the method of claim 13.22. A method comprising: detecting a postural change in a patient; evaluating an evoked response parameter functionally related to an evoked response amplitude for an indication of the postural change; and applying cardiac pacing therapy in response to detection of the postural change that is additionally confirmed by the evoked response parameter. 23. The method of claim 22, wherein the evaluating comprises: monitoring the evoked response parameter (ERP); computing a delta ERP (&Dgr;ERP) as a function of the ERP and a moving average of the ERP; examining the &Dgr;ERP computed at approximately at time when the postural change is detected; and in an event that the &Dgr;ERP changes by a predetermined amount, confirming that the postural change did occur. 24. One or more computer-readable media having computer-readable instructions thereon which, when executed by a programmable stimulation device, cause the stimulation device to execute the method of claim 22.25. A method comprising: increasing a pacing rate in a cardiac stimulation device from a first rate to a higher second rate upon (1) detection of a change in patient's position and (2) confirmation of the change using a non-position parameter; and subsequently decreasing the pacing rate back toward the first rate. 26. The method of claim 25, wherein the non-position parameter is selected from a group of parameters comprising stroke volume, a cardiac impedance parameter, evoked response integral, ventricular wall thickness, ventricular pressure, atrial evoked response amplitude, and atrial evoked response integral.27. The method of claim 25, further comprising decreasing the pacing rate after a predetermined period of time.28. One or more computer-readable media having computer-readable instructions thereon which, when executed by a programmable stimulation device, cause the stimulation device to execute the method of claim 25.29. A cardiac stimulation device comprising: a position sensor to sense a position parameter indicative of changes in a patient's position; a processor operably coupled to the position sensor, the processor being configured to determine when to administer cardiac pacing therapy to the patient based on the position parameter and a second cross-check paramet er that is affected by the change in the patient's position and is used to confirm a position change sensed by the position sensor; and a pacing generator configured to administer the cardiac pacing therapy as directed by the processor. 30. The cardiac stimulation device of claim 29, wherein the position sensor comprises a 3D accelerometer.31. The cardiac stimulation device of claim 29, wherein the position sensor is configured to sense a change from a horizontal position to an upright position.32. The cardiac stimulation device of claim 29, wherein the cross-check parameter comprises a ventricular evoked response amplitude.33. The cardiac stimulation device of claim 29, wherein the cross-check parameter comprises a cross-check parameter is selected from a group of parameters comprising stroke volume, a cardiac impedance parameter, evoked response integral, ventricular wall thickness, ventricular pressure, atrial evoked response amplitude, and atrial evoked response integral.34. The cardiac stimulation device of claim 29, wherein the processor determines to administer cardiac pacing therapy when the position sensor detects a postural change from a horizontal position to an upright position and the cross-check parameter confirms the postural change.35. The cardiac stimulation device of claim 34, wherein the pacing generator increases a pacing rate from a first rate to a higher second rate.36. The cardiac stimulation device of claim 34, wherein the pacing generator generates a pacing rate effective to counteract effects of orthostatic hypotension.37. The cardiac stimulation device of claim 34, wherein the pacing generator administers the cardiac pacing therapy for a predetermined period of time.38. An implantable cardiac rhythm management device, comprising: position sensing means for sensing a change in a patient's position from a horizontal position to an upright position; evaluation means for evaluating a cross-check parameter affected by the change in the patient's position; and therapy delivery means, responsive to the position sensing means and the evaluation means, for generating cardiac stimulating pulses at an increased rate effective to treat orthostatic hypotension when the position sensing means senses a postural change from a horizontal position to an upright position and the evaluation means confirms the postural change. 39. The implantable cardiac rhythm management device of claim 38, wherein the evaluation means comprises detecting means for detecting changes in an evoked response amplitude.40. The implantable cardiac rhythm management device of claim 38, wherein the therapy delivery means systematically reduces the pulse rate following treatment of the orthostatic hypotension.41. A programmable cardiac stimulation device having a memory and a processor, the cardiac stimulation device being programmed to perform tasks comprising: administering pacing therapy to a patient when the device (1) detects a postural change from a horizontal position to an upright position and (2) confirms the postural change using a cross-check parameter; and subsequently removing the pacing therapy in a systematic manner. 42. The programmable cardiac stimulation device of claim 41, wherein the cross-check parameter comprises an evoked response amplitude.43. The programmable cardiac stimulation device of claim 41, wherein the cross-check parameter comprises a cross-check parameter is selected from a group of parameters comprising stroke volume, a cardiac impedance parameter, evoked response integral, ventricular wall thickness, ventricular pressure, atrial evoked response amplitude, and atrial evoked response integral.44. The programmable cardiac stimulation device of claim 41, wherein the cardiac stimulation device is programmed to perform additional tasks comprising: monitoring an evoked response parameter (ERP) functionally related to an evoked response amplitude (ERA); computing a delta ERP (&Dgr;ERP) as a fun ction of the ERP and a moving average of the ERP; examining the &Dgr;ERP computed at approximately at time when the postural change is detected; and in an event that the &Dgr;ERP changes by a predetermined amount, confirming that the postural change did occur.