Static accuracy of resistive bend sensors.

Sensing of finger joint rotation can be difficult due to the hand's many degrees-of-freedom within a small space. Resistive bend sensors offer a potentially attractive option for making these measurements due to their low profile, small mass, and low cost. Further characterization of these bend sensors is needed, however, to ensure that readings are accurate. Specifically the static accuracy when bending and straightening the sensor has not been investigated. In this study, two-inch resistive sensors were bent from 0° to 90° and back to 0° while measuring the voltage output. Five calibration models were fitted to the measured data and used to determine the sensor's accuracy. When used with coated sensors, both the cubic and pchip models demonstrated non-monotonic behavior at low bend angles. Using uncoated sensors, the pchip calibration function and raw data resulted in a median error of 1.7° (SD 1.7°, range 12.1°).

[Bilateral and recurrent facial palsy due to lymphoma: a case report]. / Paralysie faciale périphérique à bascule et lymphome: à propos d'un cas.

OBJECTIVE: To discuss about management of facial paralysis reccurence and to highlight the ENT's important role in the diagnosis of systemic diseases. MATERIAL AND METHODS: This article presents a case report about a controlateral facial palsy recurrence, two months later in a fifty-two year's old woman. This cranial nerves involvement was due to non-Hodgkin lymphoma with neuro-meningeal spreading. The first palsy had completely recovered with steroids. The early recurrence of the palsy and the lymph nodes areas exam lead to the diagnosis. The patient was treated by chemotherapy with good neuromeningeal diffusion. The facial score rapidly improved, according to facial electromyography results. DISCUSSION: Specific biological and radiological explorations are usually carried out in recurrent facial palsy. Complete clinical examination and cerebrospinal fluid study are useful in this case. Moreover it should be preferable to do these explorations before steroid therapy. A diffuse meningeal enhancement on the MRI can complete sometimes clinical and biological data. CONCLUSION: Cranial nerves involvement is sometimes one of the first symptoms of neuro-meningeal lymphoma. Facial palsy reccurence has to conduce ENT pratician to do more specific explorations, of which CSF analysis is required.