A system can generate a heavy load pre-warning or an overload pre-warning for distribution transformers. Operation of the system can include selecting data records received from a plurality of data sources; converting the data records in the plurality of different data formats; filtering the data records in the database by using a predetermined threshold and matching each of the filtered data records with one of a plurality of distribution transformers; transforming the matched data records to a plurality of predefined predictor variables; selecting a subset of the plurality of predefined predictor variables; training, testing and tuning a model and forecasting at least one of heavy load or overload for each of the plurality of distribution transformers in a predetermined region.
Please help me write a proper abstract based on the patent claims. CLAIM: 1. An airway manifold comprising: a manifold body comprising an upper body portion and a lower body portion, wherein a distal end of the upper body portion and a proximal end said lower body portion are engaged such that said upper body portion is rotatable relative to said lower body portion, and such that a hollow interior space is defined thereby, said lower body portion having a lower body port open to said hollow interior space and a tapered diameter decreasing from the proximal end of the lower body portion toward the lower body port, said upper body portion including a plurality of ports continuously open to said hollow interior space, the upper body portion and the lower body portion defining a longitudinal axis passing through the hollow interior space and extending between the lower body port and one of the plurality of ports of upper body portion, an upper body first port of said plurality of ports being aligned with the longitudinal axis to define a substantially linear passageway when said upper body portion is at a first rotatable position relative to said lower body portion, and an upper body second port of said plurality of ports being aligned with the longitudinal axis to define a substantially linear passageway when said upper body portion is at a second rotatable position relative to said lower body portion, wherein in the first rotatable position, the upper body second port is angularly offset from the longitudinal axis, and wherein in the second rotatable position, the upper body first port is angularly offset from the longitudinal axis. 2. The airway manifold of claim 1, wherein said lower body port comprises a lower body first port, said lower body portion further comprising a lower body second port open to said hollow interior space and angularly offset from said lower body first port. 3. The airway manifold of claim 2, wherein said lower body first port is configured and aligned for engagement with an airway tube; said lower body second port is configured and aligned for engagement with a ventilating device; said upper body first port is configured and aligned for passage of a viewing device therethrough when said upper body portion is at said first rotatable position; and said upper body second port is configured and aligned for passage of said viewing device therethrough when said upper body portion is at said second rotatable position. 4. The airway manifold of claim 3, wherein said upper body first port is configured and aligned for passage of an endobronchial blocker when said upper body portion is at said second rotatable position. 5. The airway manifold of claim 1, wherein each of said upper body first port and said upper body second port communicates with said lower body port at each of said first rotatable position and said second rotatable position. 6. The airway manifold of claim 1, wherein at least of one of said upper body first port and said upper body second port further comprises an end cap having an opening therethrough for passage of a medical device, said at least one of said upper body first port and said upper body second port further comprising a valve member positioned internal of said end cap in said hollow interior space. 7. The airway manifold of claim 6, wherein each of said upper body first port and said upper body second port comprise an end cap having an opening therethrough for passage of a medical device, and comprise a valve member positioned internal of said end cap in said hollow interior space. 8. The airway manifold of claim 1, wherein said upper body portion further comprises an upper body third port. 9. The airway manifold of claim 8, wherein said upper body third port is aligned with the longitudinal axis to define a substantially linear passageway when said upper body portion is at a third rotatable position relative to said lower body portion. 10. An airway system, comprising: a manifold comprising an upper body and a lower body, said upper body and said lower body engaged such that said upper body is rotatable relative to said lower body, and such that a hollow interior space is defined thereby; said lower body including a lower body tubular first port and a lower body second port, each of said lower body first port and said lower body second port open to said hollow interior space, the lower body tubular first port defining a longitudinal axis extending along a center of the tubular first port; said upper body including an upper body first port and an upper body second port, each of said upper body first port and said upper body second port simultaneously open to said hollow interior space; said upper body first port aligned with the longitudinal axis to define a substantially linear passageway when said upper body is at a first rotatable position relative to said lower body, and said upper body second port aligned with the longitudinal axis to define a substantially linear passageway when said upper body is at a second rotatable position relative to said lower body, wherein in the first rotatable position, the upper body second port is angularly offset from the longitudinal axis, and wherein in the second rotatable position, the upper body first port is angularly offset from the longitudinal axis; an airway tube engaged with said lower body first port; a ventilator engaged with said lower body second port; a viewing device insertable through said upper body first port and said lower body first port when said upper body is at said first rotatable position relative to said lower body, and insertable through said upper body second port and said lower body first port when said upper body is at said second rotatable position relative to said lower body; and a guide device insertable through one of said first upper body port and said second upper body port and extendable therefrom through said airway tube. 11. The airway system of claim 10, further comprising a medical device insertable through said upper body first port and said lower body first port when said upper body is at said second rotatable position relative to said lower body. 12. The airway system of claim 11, wherein said guide device comprises a wire guide, and said medical device comprises an endobronchial blocker. 13. The airway system of claim 12, wherein said viewing device comprises a bronchoscope, and wherein said endobronchial blocker comprises a loop member at a distal portion thereof, said loop member sized and arranged to receive an end of said bronchoscope. 14. The airway system of claim 10, wherein each of said upper body first port and said upper body second port communicates with each of said lower body first port and said lower body second port at each of said first rotatable position and said second rotatable position. 15. The airway system of claim 10, said upper body including a third port axially aligned with the longitudinal axis to define a substantially linear passageway when said upper body is at a third rotatable position relative to said lower body. 16. A method of introducing a medical device into a mainstem bronchus of a patient, comprising: positioning a manifold at a proximal end of an airway tube, said manifold comprising an upper body and a lower body, said upper body and said lower body engaged such that said upper body is rotatable relative to said lower body, and such that a hollow interior space is defined thereby; said lower body including a lower body first port and a lower body second port, each of said lower body first port and said lower body second port open to said hollow interior space; said upper body including an upper body first port and an upper body second port, each of said upper body first port and said upper body second port continuously open to said hollow interior space; said upper body portion and said lower body portion defining a longitudinal axis passing through the hollow interior space and extending between the lower body port and one of the upper body first port and the upper body second port, wherein said upper body first port being aligned with the longitudinal axis to define a substantially linear passageway when said upper body is at a first rotatable position relative to said lower body, and said upper body second port being aligned with the longitudinal axis to define a substantially linear passageway when said upper body is at a second rotatable position relative to said lower body, said airway tube proximal end positioned at said lower body first port, said airway tube distal end extending into the trachea of the patient; introducing a viewing device distal end and a guide device distal end through said upper body first port when said upper body is at said first rotatable position relative to said lower body and the upper body second port is angularly offset from the longitudinal axis, and advancing said distal ends through said lower body first port and airway tube, and into said trachea; advancing said viewing device distal end and said guide device distal end toward a target mainstem bronchus, and advancing said guide device distal end into said target bronchus under visualization from said viewing device; withdrawing said viewing device through said upper body first port, and maintaining a position of said guide device along said upper body first port and said target bronchus; rotating said upper body to said second rotatable position relative to said lower body wherein the upper body first port is angularly offset from the longitudinal axis; introducing said viewing device distal end through said upper body second port, and advancing said viewing device distal end through said lower body first port and airway tube toward the target mainstem bronchus; and introducing a medical device distal end through said upper body first port, and advancing said medical device distal end toward said target bronchus. 17. The method of claim 16, wherein said medical device comprises an endobronchial blocking device having an inflatable balloon at a distal end thereof, and said viewing device comprises a bronchoscope, further comprising: advancing the distal end of said endobronchial blocking device into said target bronchus under visualization by the bronchoscope, with said balloon in an uninflated condition; confirming a placement of said uninflated balloon via said bronchoscope; and inflating said balloon. 18. The method of claim 17, further comprising: viewing a placement of said inflated balloon; and removing said bronchoscope through said upper body second port. 19. The method of claim 17, wherein said guide device comprises a wire guide, and wherein said endobronchial blocking device is advanced into said target bronchus over said wire guide. 20. The method of claim 16, wherein said medical device includes a loop at a distal portion thereof for receiving said viewing device, and wherein said viewing device is received in said loop, such that said medical device is advanced toward said target bronchus during advancement of said viewing device. 21. The airway manifold of claim 1, wherein one of the lower body portion and upper body portion comprises a tab and the other of the lower body portion and the upper body portion comprises an edge which defines a circumferential internal slot, wherein the tab engages with the circumferential internal slot. 22. The airway manifold of claim 1, wherein the upper body portion and the lower body portion are rotatable about a rotational axis, wherein the rotational axis is angularly offset from the longitudinal axis.