Abstract: A cerebrospinal fluid (CSF) detection device includes a headband including at least four electrodes integrated into the headband. The electrodes are configured to make electrical contact with a person's head when the headband is placed on the person's head. The CSF detection device also includes an impedance circuit integrated into the headband and coupled to the at least four electrodes. The impedance circuit includes memory and an impedance analyzer coupled to the at least four electrodes and is configured to measure an impedance of the person's head. A first pair of the at least four electrodes is used by the impedance circuit to inject an electrical signal into the person's head and a second pair of the electrodes are used by the impedance analyzer to sense a signal. The first pair of electrodes is interleaved within the headband with respect to the second pair of electrodes.

Abstract: A bearing component 2 for a joint replacement prosthesis comprises a first bearing element 4; a second bearing element 6, and a linking element 8, operatively connecting the first and second bearing elements 4, 6 and permitting relative motion there between. The flexible linking element 8 prevents dislocation of mobile bearings in a total knee replacement prosthesis. The invention also relates to a bridging element which retains the linking element 8 with some play, which acts as a ligament support 2051, and which causes a deflection of the line of action of a ligament 1018. A joint replacement prosthesis is also disclosed comprising a biasing element 1140 or a tensioning element 1220 operatively coupled to the artificial ligament 1018. The biasing element 1140 or tensioning element 1220 may be housed in the stem of a tibia tray 1006.

Abstract: An apparatus for mass spectrometry includes a laser ablation sampler comprising a laser ablation chamber and a laser which produces a laser beam. The laser irradiates and ablates a material from a sample placed within the laser ablation chamber so as to generate an ablated sample material. A transfer tube system comprising transfer tubes connect the laser ablation sample with, and provides a parallel and simultaneous transport of the ablated sample material to, each of a soft and a hard ionization source. The soft and hard ionization sources interact with the ablated sample material to respectively generate ion populations having a mass-to-charge ratio distribution. These respective mass-to-charge ratio distributions are respectively transmitted to a molecular mass spectrometer and to an elemental mass spectrometer which provide information on the mass-to-charge ratio distribution. The mass-to-charge ratio distributions are used to characterize a composition of the ablated sample material.

Abstract: A bearing component 2 for a joint replacement prosthesis comprises a first bearing element 4; a second bearing element 6, and a linking element 8, operatively connecting the first and second bearing elements 4, 6 and permitting relative motion there between. The flexible linking element 8 prevents dislocation of mobile bearings in a total knee replacement prosthesis. The invention also relates to a bridging element which retains the linking element 8 with some play, which acts as a ligament support 2051, and which causes a deflection of the line of action of a ligament 1018. A joint replacement prosthesis is also disclosed comprising a biasing element 1140 or a tensioning element 1220 operatively coupled to the artificial ligament 1018. The biasing element 1140 or tensioning element 1220 may be housed in the stem of a tibial tray 1006.

Abstract: A system differentiates good content from bad content in a user-provided content system. Messages are analyzed for features that characterize messages. A feature may occur in one or more messages. A feature that has more than a threshold number of occurrences in messages in a time interval is identified for further analysis. Enhanced authentication is requested from senders of the messages with occurrences of the identified feature. Based on the rate at which senders of the messages pass authentication, the content associated with the message is determined to be good content or bad content. Subsequent messages are blocked or successfully delivered based on whether features occurring in the messages are indicative of good content or bad content.

Abstract: A measurement assembly of a personal health monitoring system for measuring the lung capacity of a person. In an embodiment, the measurement assembly includes a sensor assembly includes a sensor that is configured to sense the force of a fluid exhaled by the person onto the sensor and output a force measurement. In addition, the measurement assembly includes a control assembly coupled to the force sensing assembly, the control assembly configured to receive the force measurement from the sensor. Further, the measurement assembly includes a housing configured to support each of the sensor assembly and the control assembly. The sensor is disposed on an external surface of the housing.

Abstract: A stylus assembly (10) adapted to align a surgical tool with a bone, the stylus assembly (10) comprising: a mounting element (12,18); a tool guide (50) adjustably mounted relative to the mounting element (12,18); a stylus (16) adjustably mounted relative to the mounting element (12,18) and having a curved portion for engagement with a predetermined part of the bone; and a lockable retaining member (14) for simultaneously locking the surgical tool guide (50) and the stylus (16) to the mounting element (12,18).

Abstract: The invention is a rotational mount for use in displaying hand-held consumer electronics in a retail environment. The rotational mount allows the hand-held to freely pivot in rotation on the display. The mount may automatically return to an initial orientation.

Abstract: A portable device stand includes an upper surface, a lower surface, and one or more expandable apparatus. Voids are included in the upper surface to provide ventilation which assist in cooling portable electronic devices. The stand has the ability to be incrementally adjusted using one or more expandable apparatus. This feature allows a user to choose a specific setting based on their needs. Using the expandable apparatus allow a user to adjust their device stand in a variety of angles in a single step. A lower surface, which is connected to the upper surface by one or more expandable apparatus, may be used for storage.

Abstract: An introducer includes a sheath for introducing a catheter into a blood vessel at an insertion site and a plurality of electrodes on the sheath. The introducer also includes an impedance assessment unit connected to the electrodes. The impedance assessment unit includes a power source and a wireless transceiver and is configured to inject one of a predetermined current or voltage across a first pair of electrodes and to measure the other of the current or voltage across a second pair of electrodes. The impedance assessment unit also is configured to perform at least one: wirelessly transmit current and voltage values to an external apparatus for detection of a bleed, and compute an impedance based on the current and voltage and wirelessly transmit the computed impedance to the external apparatus for detection of the bleed.

Abstract: Behavior of an online system is modified dynamically using feature expressions and feature loops. A feature expression can be expressed as a combination of other features or feature expressions, thereby allowing specification of complex features. The sets of feature expressions and policies of an online system can be modified while the online system is running. Feature loops aggregate values of a feature expression across a plurality of actions, for example, number of occurrences of an event over a time interval. The online system evaluates a set of feature expressions in response to actions performed by users. Feature expressions are used to specify policies that determine how the online system reacts to certain types of user actions. The ability to dynamically modify the feature expressions and policies of the online system allows the online system to adapt to attacks by malicious users in a timely manner.

Abstract: Security from malicious attack is provided for a user environment running in a virtualized environment by a virtual security appliance (VSA) running outside of the user environment, but on the same computer system as the user environment. For example, a VSA running in a virtual machine can provide security for a user environment running in a second virtual machine. The separation of the VSA from the user environment enhances the robustness of the VSA against malicious attacks seeking to disable/bypass the protections of the VSA, while avoiding the costs and complexities of a physical security appliance.

Abstract: Some embodiments include tracking events and classifying assets within a computer system. A time series of occurrences of an event type associated with at least one asset is generated. A first signal value and a second signal value is determined based on the time series. The at least one asset can be classified based on comparison of the first signal value and the second signal value. The time series can be based on at least one time window including time intervals. Counters to determine a number of occurrences of an event type can be associated with the time intervals. Each of the counters can be incremented upon occurrence of the event type associated with the at least one asset during an associated time interval.

Abstract: A bearing component 2 for a joint replacement prosthesis comprises a first bearing element 4; a second bearing element 6, and a linking element 8, operatively connecting the first and second bearing elements 4, 6 and permitting relative motion there between. The flexible linking element 8 prevents dislocation of mobile bearings in a total knee replacement prosthesis. The invention also relates to a bridging element which retains the linking element 8 with some play, which acts as a ligament support 2051, and which causes a deflection of the line of action of a ligament 1018. A joint replacement prosthesis is also disclosed comprising a biasing element 1140 or a tensioning element 1220 operatively coupled to the artificial ligament 1018. The biasing element 1140 or tensioning element 1220 may be housed in the stem of a tibia tray 1006.

Abstract: A bearing component 2 for a joint replacement prosthesis comprises a first bearing element 4; a second bearing element 6, and a linking element 8, operatively connecting the first and second bearing elements 4, 6 and permitting relative motion there between. The flexible linking element 8 prevents dislocation of mobile bearings in a total knee replacement prosthesis. The invention also relates to a bridging element which retains the linking element 8 with some play, which acts as a ligament support 2051, and which causes a deflection of the line of action of a ligament 1018. A joint replacement prosthesis is also disclosed comprising a biasing element 1140 or a tensioning element 1220 operatively coupled to the artificial ligament 1018. The biasing element 1140 or tensioning element 1220 may be housed in the stem of a tibia tray 1006.

Abstract: An introducer comprise a sheath for introducing a catheter into a blood vessel, a plurality of electrodes on the sheath, and an impedance assessment unit provided on the sheath and connected to the electrodes. The impedance assessment unit fixes one of a current or voltage across a first pair of the electrodes and measures the other of the current or voltage across a second pair of electrodes.

Abstract: The invention relates to a process for the preparation of alkyl phosphinates, alkenyl phosphinates, alkynyl phosphinates or phenyl phosphinates by reaction of a corresponding phosphine oxide with an alcohol or phenol in the presence of alkali-metal fluoride or tetraalkylammonium fluoride.

Abstract: A social networking system allows users to create collections including objects associated with products, services, games, videos, books or other similar items. An object is associated with a type and one or more actions are associated with the type to identify actions capable of being performed on the object. When an object is presented to a user, the type of the object is compared to types of objects capable of being included in a collection. If the type of the object is capable of being included in a collection, one or more collections associated with actions associated with the type of the object are identified. Information describing the identified collections is generated and presented to the user. By selecting information identifying a collection, the user includes the object in the collection corresponding to the selected information.

Abstract: To allow for tracking events and classifying assets within a social networking system. A time series of occurrences of an event type associated with at least one asset is generated. A first signal value and a second signal value is determined based on the time series. The at least one asset is classified based on comparison of the first signal value and the second signal value. In an embodiment, the time series is based on at least one time window including time intervals. In an embodiment, counters to determine a number of occurrences of an event type are associated with the time intervals. In an embodiment, each of the counters are incremented upon occurrence of the event type associated with the at least one asset during an associated time interval.

Abstract: A drill guide comprising: a body comprising a hole extending therethrough for guiding a drill; and an alignment tool, the alignment tool being operable to connect the body to an intramedullary rod, such that the orientation of the body is fixable with respect to the intramedullary rod in an anteroposterior plane and in a transverse plane.