Abstract: A novel Low Free 2-MercaptoEthanol Ester has been used to prepare Alkyl Tin Reverse Ester Stabilizers as well as used to enhance the thermal performance of those Alkyl Tin Reverse Ester Stabilizers or Alkyl Tin Thioglycolate Stabilizers or Alkyl Tin Mercaptides for PVC applications where odor during PVC compounding, processing, or of the final PVC article has prevented widespread use of Alkyl Tin Reverse Ester Stabilizers.

Abstract: A video laryngoscope and elongate laryngoscope insertion section for a video laryngoscope, comprising a viewing port through which an imaging device within the insertion section can obtain images of a larynx, the insertion section extending between a distal end for insertion into a subject and an opposite proximal end, and having an inferior surface and an opposed superior surface, wherein the insertion section comprises a proximal region where the insertion section extends through a subject's teeth in use, a distal region extending to the distal end and an intermediate region therebetween, wherein the inferior surface of the insertion section comprises or consists of a curved region which extends from the proximal region through the intermediate region to the distal region, wherein the curved region of the inferior surface is continuously longitudinally curved along the length of the longitudinally curved region and wherein the longitudinal curvature of the curved region of the inferior surface varies in the

Abstract: A cane that includes a handle and a pylon that includes a satellite leg control operably connected to the handle. The cane further includes a terminal feedback device that is operably connected to the pylon and slidable relative thereto for retracting the terminal feedback device to expose a cane tip. The terminal feedback device includes a plurality of satellite legs. The terminal feedback device also includes a plurality of wheels. Each wheel is operably connected to a satellite leg.

Abstract: A laryngoscope insertion section for a laryngoscope, which is typically a video laryngoscope, includes a lateral tube guide configured to retain an endotracheal tube in a plane. A viewing port for a camera or other image collector is laterally displaced from the plane of the endotracheal tube. The said plane of the endotracheal tube is aligned substantially in the same plane as a patient's median plane and the tube can be advanced into the larynx using a natural curving motion similar to the motion used to introduce an endotracheal tube using a convention laryngoscope. In a preferred embodiment, the distal tip of the insertion section and a retained endotracheal tube will be located in the patient's median plane during intubation. As the tube guide retains endotracheal tubes substantially in a plane, lateral curvature is avoided, reducing resistance to advancement of the tube.

Abstract: As a PUF device ages, the response characteristics of the device change. Thus, mappings made on the original PUF outputs can drift and become invalid. Re-enrollment or re-mapping of hidden values to PUF response characteristics can resolve the changing nature of the PUF. Unfortunately, an adversary may tamper with the PUF during re-enrollment compromising security of the PUF. Accordingly, techniques of securely and remotely re-enrolling a PUF device are described. During an initial enrollment of the PUF device, multiple sets of enrollment values of the PUF device can be generated. For remote re-enrollment, a first initial set of enrollment values can be used to authenticate the PUF device. Upon authentication using the first initial set, the PUF device can re-enroll the PUF device and account for changes in PUF characteristics. A second set of initial enrollment values can then be used to verify that the PUF device is unaltered.

Abstract: A memory element can include a first electrode; at least one switching layer formed over the first electrode; a second electrode layer; and at least one conductive cap layer formed over the second electrode layer having substantially no grain boundaries extending through to the second electrode layer; wherein the at least one switching layer is programmable between different impedance states by application of electric fields via that first and second electrode. Methods of forming such memory elements are also disclosed.

Abstract: This application describes systems and methods for using a physical unclonable function (PUF) to authenticate a device, which may include circuitry for generating PUF values that may uniquely identify the device. According to one aspect, the device may provide enrollment PUF values to an authentication device. The device may later be authenticated if PUF values generated by the device are within a threshold distance of the enrollment PUF values. Since the PUF values are compared using a distance, it may not necessary to apply an error correcting code to the PUF values. The enrollment values and/or the calculated distance may be adjusted to compensate for time variations in the PUF values due to circuit aging. Systems and methods are also described herein for authenticating the device without revealing new PUF values to any second party, for example using a cryptographic technique known as a garbled circuit.

Abstract: This application describes systems and methods for using a physical unclonable function (PUF) to authenticate a device, which may include circuitry for generating PUF values that may uniquely identify the device. According to one aspect, the device may provide enrollment PUF values to an authentication device. The device may later be authenticated if PUF values generated by the device are within a threshold distance of the enrollment PUF values. Since the PUF values are compared using a distance, it may not necessary to apply an error correcting code to the PUF values. The enrollment values and/or the calculated distance may be adjusted to compensate for time variations in the PUF values due to circuit aging. Systems and methods are also described herein for authenticating the device without revealing new PUF values to any second party, for example using a cryptographic technique known as a garbled circuit.

Abstract: A video laryngoscope and elongate laryngoscope insertion section for a video laryngoscope, comprising a viewing port through which an imaging device within the insertion section can obtain images of a larynx, the insertion section extending between a distal end for insertion into a subject and an opposite proximal end, and having an inferior surface and an opposed superior surface, wherein the insertion section comprises a proximal region where the insertion section extends through a subject's teeth in use, a distal region extending to the distal end and an intermediate region therebetween, wherein the inferior surface of the insertion section comprises or consists of a curved region which extends from the proximal region through the intermediate region to the distal region, wherein the curved region of the inferior surface is continuously longitudinally curved along the length of the longitudinally curved region and wherein the longitudinal curvature of the curved region of the inferior surface varies in the

Abstract: An authentication system and device including physical unclonable function (PUF) and threshold cryptography comprising: a PUF device having a PUF input and a PUF output and constructed to generate, in response to the input of a challenge, an output value characteristic to the PUF and the challenge; and a processor having a processor input that is connected to the PUF output, and having a processor output connected to the PUF input, the processor configured to: control the issuance of challenges to the PUF input via the processor output, receive output from the PUF output, combine multiple received PUF output values each corresponding to a share of a private key or secret, and perform threshold cryptographic operations. The system and device may be configured so that shares are refreshable, and may be configured to perform staggered share refreshing.

Abstract: Various embodiments enhance security and tamper resistance of device or components having a hardware intrinsic identity. For example, devices or components having PUFs can map challenges and helper values to a secret or share of secret to utilize a local identity in cryptographic operations. A plurality of components having individual identities can be extend so that the plurality of components can enroll into a shared global identity. Shares of the global identity can be distributed among the plurality of components or devices such that at least two devices must provide at least two shares of the global identity (or threshold operations on the at least two shares) to successfully use the global identity. Such sharing mitigates adversarial tampering attack on the global identity. Share refresh protocols can provide additional security, enable introduction of new components or devices to the global identity, and allow removal of existing components or devices.

Abstract: The present invention relates to an online, centralised and fully integrated integrity risk management System that provides businesses with a 360-degree view of their employees to allow the business to effectively manage their integrity related risks. It does this by providing employees with access to a number of integrity based modules that enable the business to, at one end, drive legislative and regulatory compliance through to improving and enhancing employee engagement and understanding of the businesses goals and objectives.

Abstract: Disclosed is a video laryngoscope having a body, an insertion section extending from the body generally parallel to a median plane of the laryngoscope extending through the body, and a display screen assembly extending from the body generally perpendicular to the median plane, the body comprising a grip portion intermediate the display screen assembly and the insertion section. The display screen assembly, comprising a display screen, extends laterally from the body and the inner edge of the display screen falls within the lateral extent of the body. The grip portion is also of a minimum size to allow an adult to grip the laryngoscope, the hand abutting the screen assembly.

Abstract: A network authentication system with dynamic key generation that facilitates the establishment of both endpoint identity, as well as a secure communication channel using a dynamically-generated key between two end devices (potentially on separate local area networks). An interactive or non-interactive authentication protocol is used to establish the identity of the target end device, and dynamic key generation is used to establish a shared symmetric session key for creating an encrypted communication channel between the end devices.

Abstract: A laryngoscope insertion section comprising a tube guide including at least an inferior tube guiding member and a superior tube guiding member, wherein the thickness of the insertion section in a first region is less than the external diameter of the largest diameter endotracheal tube in an operating range of endotracheal tube sizes plus the thickness of the inferior tube guiding member plus the thickness of the superior tube guiding member. Typically, the insertion section comprises an elongate member and the tube guide is lateral of the elongate member. Typically, an endotracheal tube is retained within the tube guide in flexural tension.

Abstract: An electrical device includes a memory storing a value indicative the remaining available rated capacity of one or more batteries. The stored value is changed in use to reflect reducing capacity. The initial stored value is chosen so that there is a very high (e.g. >99.9%) confidence that the one or more batteries will provide at least the capacity indicated by the initial stored value. This reduces the chance of failure during emergency procedures. The one or more batteries may be integral to the electrical device. An override facility is provided.

Abstract: A device comprising: a physical unclonable function (PUF) device configured to generate an output value based on hardware characteristics of the PUF device; and a processor connected to the PUF device, the processor configured to: execute a cryptographic operation in a sequence of ordered stages including a first stage and a second stage, the executing comprising: in the first stage: recovering a first secret value based on a first output value obtained from the PUF device; executing a first sub-operation using the first secret value; and removing unobscured values from memory prior to execution of a subsequent stage; in the second stage: recovering a second secret value based on a second output value obtained from the PUF device; and executing a second sub-operation using the second secret value to enable execution of a cryptographic operation encoded with at least the first secret value and the second secret value.

Abstract: A multifunctional visualization instrument is provided that, in certain embodiments, includes a body having a proximal end and a distal end. The multifunctional visualization instrument includes a display screen on the body and a camera stick at the distal end of the body and comprising an arm and a camera. The arm of the camera stick is sized to fit within a channel of a removable laryngoscope blade. The multifunctional visualization instrument includes a port on a surface of the laryngoscope, configured to mate with an introducer and a steering input for steering the introducer, displayed on the display screen simultaneously with an image of the patient captured by the camera.

Abstract: A video laryngoscope has an arm comprising a video camera, at least one electrical conductor extending to the video camera, an elongate electrical conductor retaining member retaining the electrical conductor and an overmoulding extending around the elongate cable retaining member and having a smooth outer surface. Providing a laryngoscope arm overmoulded to provide a smooth outer surface has the benefit of allowing the laryngoscope arm to be readily cleaned or sterilised, and minimises the number of features, such as seams or joints, where dirt or infectious bodies may be retained.

Abstract: The invention provides pharmaceutical compositions for the treatment of neoplastic diseases, fluke infestations and Lyme disease, comprising compounds capable of providing dihydroartemesinin and a medium chain triglyceride formulated for transmucosal sublingual, buccal or nasal delivery, especially by a spray. Also provided are delivery devices containing the compositions.