Abstract: A person identification device 100 has a tag 110 with a code and a tamper evident tether 120 able to secure the tag 110 to a person having a body. The person identification device also has a signal generator 140 able to generate a signal representing the code. The tag 110 has a capacitive contact 130 able to capacitively couple the signal into the body of the person.

Abstract: An offender monitoring system has an electronic tag and a monitoring unit. The electronic tag has a tether to secure the electronic tag to an offender and a communication device to communicate with the monitoring unit. The monitoring unit has a communication device to communicate with the electronic tag. The system has a processor which analyses a communication between the electronic tag and the monitoring unit to determine a communication property, such as latency, variability of latency over a plurality of communications and signal strength. The processor determines, based on the measured communication property differing from a historical value, whether the communication between the electronic tag and the monitoring unit has been relayed via an intermediary device in an attempt by the offender to trick the monitoring unit.

Abstract: An offender monitoring system has an electronic tag and a monitoring unit. The electronic tag has a tether to secure the electronic tag to an offender and a communication device to communicate with the monitoring unit. The monitoring unit has a communication device to communicate with the electronic tag. The system has a processor which analyses a communication between the electronic tag and the monitoring unit to determine a communication property, such as latency, variability of latency over a plurality of communications and signal strength. The processor determines, based on the measured communication property differing from a historical value, whether the communication between the electronic tag and the monitoring unit has been relayed via an intermediary device in an attempt by the offender to trick the monitoring unit.

Abstract: A person identification device 100 has a tag 110 with a code and a tamper evident tether 120 able to secure the tag 110 to a person having a body. The person identification device also has a signal generator 140 able to generate a signal representing the code. The tag 110 has a capacitive contact 130 able to capacitively couple the signal into the body of the person.

Abstract: A person identification device 100 has a tag 110 with a code and a tamper evident tether 120 able to secure the tag 110 to a person having a body. The person identification device also has a signal generator 140 able to generate a signal representing the code. The tag 110 has a capacitive contact 130 able to capacitively couple the signal into the body of the person.

Abstract: A method of monitoring objects such as offenders, the method including the steps of: providing an electronic monitoring device for attachment to an object to be monitored; providing a tamper evident tether for attachment of the electronic monitoring device to the object to be monitored; attaching the electronic monitoring device to the object to be monitored using the tamper evident tether; and remotely monitoring the electronic monitoring device in order to monitor the location of the object.

Abstract: A method of monitoring objects such as offenders, the method including the steps of: providing an electronic monitoring device for attachment to an object to be monitored; providing a tamper evident tether for attachment of the electronic monitoring device to the object to be monitored; attaching the electronic monitoring device to the object to be monitored using the tamper evident tether; and remotely monitoring the electronic monitoring device in order to monitor the location of the object.

Abstract: A method for the measurement of cardiac output in a patient in which the arterial blood pressure waveform of a patient from a blood pressure monitoring device over a period of time is subjected to various transformations and corrections, including a Fourier analysis in order to obtain the modulus of the first harmonic. The nominal stroke volume is then determined from the first harmonic and data relating to the arterial blood pressure and heart rate. The nominal cardiac output is then obtained from the nominal stroke volume.

Abstract: A method of analyzing a signal representing a physical parameter to obtain information from said signal and to extrapolate information contained in said signal and/or to ignore an interfering component in part of said signal, said signal representing either only a first portion of a skew distribution, or a first portion of a skew distribution and a second portion containing an interfering component, in which the area of a skew distribution, preferably a lognormal distribution is measured. The method is particularly applicable to the measurement of cardiac output. Apparatus for carrying out the method is also disclosed.

Abstract: A method for the measurement of cardiac output in a patient in which the arterial blood pressure waveform of a patient from a blood pressure monitoring device over a period of time is subjected to various transformations and corrections, including autocorrelation, whereby the pulsatility and heart rate of the patient are obtained. The nominal stroke volume is then calculated from the pulsatility and the nominal caridac output obtained by multiplying the stroke volume by the heart rate.

Abstract: A cation-sensitive electrode which comprises an internal reference electrode, an internal reference solution and a cation-responsive membrane, characterized in that the internal reference solution contains a saturated solution of a salt of a cation other than the cation for which the cation-responsive membrane is primarily selective, the internal reference solution being formed in situ by hydration of a combination of the salt of the cation with a hygroscopic material, bu absorption of water from the atmosphere and/or by hydration of the hygroscopic material when the electrode is put into use, thereby forming the internal reference solution.