Multimedia transmission over wireless local area networks (WLANs) is a challenging task due to the varying nature of the wireless channel as well as the inherent difference between multimedia traffic and data traffic. In the MAC layer, a single bit error in the packet can lead to the entire packet being discarded. This results in a higher packet error rate for higher payload sizes. Retransmissi...

We examined the analytical performance of eight compact systems for measuring total cholesterol: AccuMeter, Cobas Ready, Discovery f2, DT60, L-D-X, Reflotron, QCA, and Vision. We determined average bias at two decision levels, the mean absolute bias, and the percentage of results differing from the comparison method results by > 8.9% allowable total error limit for multiple reagent lots. Averag...

Quality assurance in semen analysis has been questioned recently in this journal. Based on the limited capacity of seminal parameter in the determination of fertility, the authors advocated abandoning methods of quality assurance in semen analysis for clinical situations. In this article, we explore arguments as to why quality assurance in semen analysis for clinical use is not 'a waste of time...

In this paper, we address the problem of collecting data from sensor nodes using a model-aided approach. In our approach, a model is maintained by a node and a replica of the model is maintained the base station. The base station uses the replica model to estimate the actual measurement data of the sensor node in usual time, and an actual measurement datum is sent to the base station only when ...

An application-level protocol that integrates the concept of application level framing and the network-aware applications is proposed in this paper to support the network applications with the synchronized multimedia session. The application model and the application QoS for the protocol are also proposed. The application QoS for each connection includes the maximum allowable ratio of the lost ...

The value of different anticoagulants as preservatives of specimens for prothrombin time ratios is evaluated and discussed. An increase in the ratio was demonstrated with all anti-coagulants after 24 hours and this was significant when coagulometer error was taken into account. Both solid and liquid sodium citrate were superior to sodium oxalate as preservatives at 24 hours after taking off sam...

An application-level protocol that integrates the concept of application level framing and the network-aware applications is proposed in this paper to support the network applications with the synchronized multimedia session. The application model and the application QoS for the protocol are also proposed. The application QoS for each flow includes the maximum allowable ratio for the lost mediu...

This paper describes the error probability of the second order BAM estimated by a computer simulation and an analytical calculation method. The computer simulation suggests that the iterations to retrieve a library pattern almost converge within four times and the difference between once and twice is much larger than that between twice and four times. The error probability at the output of the ...

The performance measure traditionally used in the quality-control (QC) planning process is the probability of rejecting an analytical run when an out-of-control error condition exists. A shortcoming of this performance measure is that it doesn't allow comparison of QC strategies that define analytical runs differently. Accommodating different analytical run definitions is straightforward if QC ...

Several satellite latent fault modes can cause errors that may not be removed by pseudorange corrections or be detected unless special augmentation-based integrity monitors are employed. The error classes resulting from satellite fault modes are distorted signal waveform, uncorrectable ephemeris error, excessive clock acceleration, excessive code-carrier divergence, and low signal power. The pa...