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An implant has two parts, each of which includes a joint surface facing the other part, wherein the joint surfaces are in contact with one another in an implanted state and permit pivoting of the two parts in relation to one another. An instrument for handling the implant includes a holding element for detachably connecting the instrument with each of the two parts of the implant. The instrument further includes a spacer element extending between the parts of the implant when the parts are connected with the instrument and maintaining a distance between the parts, thereby preventing the joint surfaces of the two parts of the implant from contacting each other.

A Traffic Safety prediction Computer Program (TRAF-SAFE) and sub-models for predicting the number of accidents, injuries and fatalities expected annually at an intersection or series of intersections based on the particular intersection and roadway features. A finite analysis approach to an intersection is used to break the intersection into discrete elements such as lanes, turnbays, stop control signals, and traffic flow rates. The total annual expected accidents can then be calculated as a summation of the interrelation of the individual elements. A Poisson's distribution is used to statistically estimate the likelihood of the individual vehicles occurring within a discrete time frame being investigated. The conflict probabilities between various permutations of the traffic flow is then calculated and summed to determine the number of conflicts for the intersection or roadway. The conflicts are then converted to expected accidents, and the accident level is converted to injury involvements and Safety Levels of Service for the intersection and roadway.

A cutting head for a string trimmer is provided which accommodates any string gauge thickness and may be easily and quickly re-threaded upon failure of a string previously disposed therein. The cutting head has spring-biased clamping members which are each mounted within a rotatable clamp housing within the head, such that, as a string encounters a solid object, the clamping member and its associated housing are rotated about a generally vertical axis so as to obviate or minimize the development of a stress concentration in the string in the vicinity at which it is engaged by the clamp housing.

A dental prosthesis comprises an implant, an abutment and a crown. The implant has distal and proximal portions with the implant proximal portion including distal and proximal segments. The implant proximal segment has an outer surface. The abutment has distal and proximal segments and defines an abutment shoulder therebetween. The abutment shoulder is configured to circumferentially engage the outer surface of the implant proximal segment such that an implant abutment joint is defined therebetween. The crown is configured to be positioned over the abutment and the implant such that the crown covers the implant abutment joint. The implant proximal segment has an annular concave cross-section such that the crown distal end has a rounded shape to reduce the potential for stress cracking of the crown.

A method for providing voice telephony services can include the step of receiving a call via a telephone gateway. The telephone gateway can convey call identifying data to a resource connector. A media port can be responsively established within a media converter that is communicatively linked to the telephone gateway through a port associated with the call. A call description object can be constructed that includes the call identifying data and an identifier for the media port. The call description object can be conveyed to a telephony application server that provides at least one speech service for the call. The telephony application server can initiate at least one programmatic action of a communicatively linked speech engine. The speech engine can convey results of the programmatic action to the media converter through the media port. The media converter can stream speech signals for the call based upon the results.