Abstract: Techniques to improve query caching performance by efficiently selecting queries stored in a cache for evaluation and increasing the cache hit rate by allowing for inexact matches. A list of candidate queries stored in the cache that potentially could be used to answer a new query is first determined. This list may include all cached queries, cached queries containing exact matches for select list items, or cached queries containing exact and/or inexact matches. Each of at least one candidate query is then evaluated to determine whether or not there is a cache hit, which indicates that the candidate query could be used to answer the new query. The evaluation is performed using a set of rules that allows for inexact matches of aggregates, if any, in the new query. A query plan is generated for the new query based on a specific candidate query with a cache hit.

Abstract: Techniques to improve query caching performance by efficiently selecting queries stored in a cache for evaluation and increasing the cache hit rate by allowing for inexact matches. A list of candidate queries stored in the cache that potentially could be used to answer a new query is first determined. This list may include all cached queries, cached queries containing exact matches for select list items, or cached queries containing exact and/or inexact matches. Each of at least one candidate query is then evaluated to determine whether or not there is a cache hit, which indicates that the candidate query could be used to answer the new query. The evaluation is performed using a set of rules that allows for inexact matches of aggregates, if any, in the new query. A query plan is generated for the new query based on a specific candidate query with a cache hit.

Abstract: The present invention relates to a method wherein communication links between subscriber access lines of subscriber access units of an exchange in a switching system comprising a number of exchanges are established within the exchange concerned either directly in the respective subscriber access unit or between the subscriber access units connected by trunk lines directly to one another or via at least one subscriber access unit, without involving a central switching device of the exchange concerned, and under the control of the central controller belonging to this exchange.

Abstract: A system for treating, in liquids, a mass-production parts contained in transport baskets, comprising at least one tank which contains liquid for submerging the transport baskets, at least one transport vehicle for the transport baskets by which the transport baskets can be moved over the at least one tank, at least one basket carrier which is arranged at the transport vehicle in such a way that its height is adjustable, which is able to grip a transport basket, submerge same in the tank, rotatingly drive same around an axis and lift same out of the tank, as well as a clamp for securing the basket carrier relative to the at least one tank.

Abstract: A method for determining a free connecting line in a switching center having a number of subscriber access units is provided. The access units are controlled by a switching center. At least one group of transmission lines of a subscriber access unit and, possibly, a group of lines of the line trunk group form a logical group of lines, which connects the switching center to another switching center. When an incoming or outgoing call which is intended for another switching center occurs at the subscriber access unit, a check is carried out to determine whether a connecting line which leads away from this subscriber access unit in the group of lines is free for a call, and, if one of these connecting lines is free, a connection is set up to the other switching center via this connecting line.

Abstract: After receipt of the expanded control information coming from the first communications network, the following steps are carried out in a network transition node connected to a further communications network: Based on the telephone number of the caller, which is transmitted with the control information, data for controlling functions are assigned, which are valid for the further communications network and which functionally correspond with the data for controlling functions of the first communications network, and the data for controlling functions, which are assigned to the telephone number of the caller, are added to the control information, the control information with the data for controlling functions assigned to the telephone number of the caller being transmitted to the further communications network.

Abstract: During generational change of exchanges, small relatively old exchanges (V2) previously working independently according to their own data banks (DBV2) are replaced by remote switching units (RSU). Said units are small independently working exchange and are assigned to central host exchanges (V), being controlled thereby, whereby data banks (DBV, neu) must be provided therein and the functionality thereof must include that of the data banks (DBV1, DBV2) of the previously separate exchanges (V1, V2). According to the invention, the data banks (DBV1, DBV2) are initially extracted from the exchanges (V1, V2), combined outside said exchanges and are subsequently completed with possible modifications of the original data banks (DBV1, DBV2). Said method runs automatically and allows planning data, for instance, to be incorporated. While the data banks (DBV1, DBV2) are being combined, operation remains substantially unimpeded to advantageous effect and read-only access to the old data banks (DBV1, DBV2) is possible.

Abstract: The preset invention relates to a method wherein communication links between subscriber access lines of subscriber access units of an exchange in a switching system comprising a number of exchanges are established within the exchange concerned either directly in the respective subscriber access unit or between the subscriber access units connected by means of trunk lines directly to one another or via at least one subscriber access unit, without involving a central switching device of the exchange concerned, and under the control of the central controller belonging to this exchange.

Abstract: A vapor purge system that permits evaluation of the system with a minimum number of hoses and connections, and without the use of additional components. The system includes a valve having first and second ports in communication with a first chamber and a third port in communication with a second chamber, the first and second chambers being defined by a metering member that divides an internal volume of a housing. A first conduit connects a diagnostic member having first and second operative states with the first chamber, the connection being made through the second port. The first operative state prohibits communication with an exterior of the valve, and the second operative state permits communication with the exterior. The diagnostic member provides the ability to reliably measure flow through the valve. The system can use three (3) hoses including five (5) connections from a vapor supply port connected with the first port to the third port operatively connected with a manifold.

Abstract: A system and method for controlling evaporative emissions of a volatile fuel. The system preferably has a fuel vapor collection canister, a purge valve, an isolation valve, and a fuel tank. The fuel vapor collection canister includes a supply port and a discharge port. The purge valve includes an inlet port and an outlet port. The inlet port of the purge valve is in fluid communication with the discharge port of the fuel vapor collection canister. The isolation valve includes a housing, a valve body, and a seal. The housing has a first port in fluid communication with the supply port of the fuel vapor collection canister, a second port, and a fuel vapor flow path that extends between the first and second ports. The valve body is movable with respect to the housing along an axis between a first configuration and a second configuration.

Abstract: A valve structure that includes a housing, a valve element, and a seal. The housing includes a first communication path between a first port at a first pressure level and a second port at a second pressure level. The valve element is movable with respect to the housing between a first position, a second position, and an intermediate position between the first and second positions. The first position permits substantially unrestricted fluid flow between the first and second ports. The second position substantially prevents fluid flow between the first and second ports. The seal is located at an interface between the housing and the valve element. The seal deforms in response to a differential between the first and second pressure levels such that at the intermediate position, there is restricted fluid flow between the first and second ports.

Abstract: A system and method for controlling evaporative emissions of a volatile fuel. The system preferably has a fuel vapor collection canister, a purge valve, an isolation valve, a fuel tank, and a vent valve. The fuel vapor collection canister includes a supply port and a discharge port. The purge valve includes an inlet port and an outlet port. The inlet port of the purge valve is in fluid communication with the discharge port of the fuel vapor collection canister. The isolation valve includes a housing, a valve body, and a seal. The housing has a first port in fluid communication with the supply port of the fuel vapor collection canister, a second port, and a fuel vapor flow path that extends between the first and second ports. The valve body is movable with respect to the housing along an axis between a first configuration and a second configuration.

Abstract: A system for treating, in liquids, a mass-production parts contained in transport baskets, comprising at least one tank which contains liquid for submerging the transport baskets, at least one transport vehicle for the transport baskets, by means of which transport vehicle the transport baskets can be moved over the at least one tank, at least one basket carrier which is arranged at the transport vehicle in such a way that its height is adjustable, which is able to grip a transport basket, submerge same in the tank, rotatingly drive same around an axis and lift same out of the tank, as well as a clamp for securing the basket carrier relative to the at least one tank.

Abstract: A method for determining a free connecting line in a switching center having a number of subscriber access units is provided. The access units are controlled by a switching center. At least one group of transmission lines of a subscriber access unit and, possibly, a group of lines of the line trunk group form a logical group of lines, which connects the switching center to another switching center. When an incoming or outgoing call which is intended for another switching center occurs at the subscriber access unit, a check is carried out to determine whether a connecting line which leads away from this subscriber access unit in the group of lines is free for a call, and, if one of these connecting lines is free, a connection is set up to the other switching center via this connecting line.

Abstract: A vapor purge system that permits evaluation of the system with a minimum number of hoses and connections, and without the use of additional components. The system includes a valve having first and second ports in communication with a first chamber and a third port in communication with a second chamber, the first and second chambers being defined by a metering member that divides an internal volume of a housing. A diagnostic member having first and second operative states is in communication with the first chamber through the second port. The first operative state prohibits communication with an exterior of the valve, and the second operative state permits communication with the exterior. The diagnostic member provides the ability to reliably measure flow through the valve. The system can use two (2) hoses including three (3) connections from a vapor supply port connected with the first port to the third port operatively connected with a manifold.

Abstract: A method of operating a fuel tank isolation valve. The fuel tank isolation valve has a first port, a second port, an electric actuator, and a valve body. The first port is in fluid communication with a fuel vapor collection canister. The second port is in fluid communication with a fuel tank. And the electric actuator moves the valve body to control fluid communication between the first and second ports. The method includes supplying a first electric signal to the electric actuator such that the valve body permits substantially unrestricted fuel vapor flow between the first and second ports, supplying a second electric signal to the electric actuator such that the valve body substantially prevents fuel vapor flow between the first and second ports, and supplying a third electric signal to the electric actuator such that the valve body provides restricted fuel vapor flow between the first and second ports.

Abstract: A method of operating a fuel tank isolation valve and a canister vent valve. The fuel tank isolation valve has a first port, a second port, an electric actuator, and a valve body. The first port is in fluid communication with a fuel vapor collection canister. The second port is in fluid communication with a fuel tank. The electric actuator moves the valve body to control fluid communication between the first and second ports. And the canister vent valve controls ambient fluid flow with respect to the fuel vapor collection canister.

Abstract: A method of operating a fuel tank isolation valve and a canister vent valve. The fuel tank isolation valve has a first port, a second port, an electric actuator, and a valve body. The first port is in fluid communication with a fuel vapor collection canister. The second port is in fluid communication with a fuel tank. The electric actuator moves the valve body to control fluid communication between the first and second ports. And the canister vent valve controls ambient fluid flow with respect to the fuel vapor collection canister.

Abstract: A vapor purge system that permits evaluation of the system with a minimum number of hoses and connections, and without the use of additional components. The system includes a valve having first and second ports in communication with a first chamber and a third port in communication with a second chamber, the first and second chambers being defined by a metering member that divides an internal volume of a housing. A diagnostic member having first and second operative states is in communication with the first chamber through the second port. The first operative state prohibits communication with an exterior of the valve, and the second operative state permits communication with the exterior. The diagnostic member provides the ability to reliably measure flow through the valve. The system can use two (2) hoses including three (3) connections from a vapor supply port connected with the first port to the third port operatively connected with a manifold.

Abstract: A vapor purge system that permits evaluation of the system with a minimum number of hoses and connections, and without the use of additional components. The system includes a valve having first and second ports in communication with a first chamber and a third port in communication with a second chamber, the first and second chambers being defined by a metering member that divides an internal volume of a housing. A first conduit connects a diagnostic member having first and second operative states with the first chamber, the connection being made through the second port. The first operative state prohibits communication with an exterior of the valve, and the second operative state permits communication with the exterior. The diagnostic member provides the ability to reliably measure flow through the valve. The system can use three (3) hoses including five (5) connections from a vapor supply port connected with the first port to the third port operatively connected with a manifold.