The application of a new method to the multivariate analysis of incomplete data sets is described. The new method, called maximum likelihood principal component analysis (MLPCA), is analogous to conventional principal component analysis (PCA), but incorporates measurement error variance information in the decomposition of multivariate data. Missing measurements can be handled in a reliable and ...

Launched in April 1999, the Landsat-7 ETM+ instrument is in its fourth year of operation. The quality of the acquired calibrated imagery continues to be high, especially with respect to its three most important radiometric performance parameters: reflective band instrument stability to better than ±1%, reflective band absolute calibration to better than ±5%, and thermal band absolute calibratio...

New methods for maximum-likelihood sequence estimation based on the Viterbi algorithm (VA) are presented. In the proposed scheme, the channel estimator and the Viterbi processor operate concurrently. At any given time-step, the sequence provided to the channel estimator comes from the survivor with the best metric value. These already known modifications of the traditional decision-directed VA ...

If a quantum computer is stabilized by fault-tolerant quantum error correction (QEC), then most of its resources (qubits and operations) are dedicated to the extraction of error information. Analysis of this process leads to a set of central requirements for candidate computing devices, in addition to the basic ones of stable qubits and controllable gates and measurements. The logical structure...

Usually non-maturity deposits form a considerable part of banks' assets and funding and thus hedging the interest rate risk of them is important. However, the available research addressing non-maturity deposit valuation is very limited. In this Thesis, we compare models for estimating the deposit rate and stock evolution and suggest suitable hedging possibilities for non-maturity deposits. Non-...

QUESTION What is the inter-rater reliability of the Assessment of Physiotherapy Practice (APP) instrument, and what is the error associated with individual scores? DESIGN Cross-sectional inter-rater reliability study. Thirty pairs of clinical educators each assessed one student after observing student practice over a 5-week clinical placement. PARTICIPANTS Sixty clinical educators from five...

where φ is the parameter of interest which models the relationship while U is an error term. Contrary to usual statistical regression models, the error term is correlated with the explanatory variables X, hence E(U |X) 6= 0, preventing direct estimation of φ. To overcome the endogeneity of X, we assume that there exists an observed random variable W , called the instrument, which decorrelates t...

On September 21 at 18950.56 SOD (05:15:50.56) UT the FREGATE γ-ray instrument on the High Energy Transient Explorer (HETE) detected a bright gamma-ray burst (GRB). The burst was also seen by the X-detector on the WXM X-ray instrument and was therefore well-localized in the X direction; however, the burst was outside the fully-coded field-of-view of the WXM Y-detector, and therefore information ...

The intensity of the light scattered from individual dielectric spheres was measured as a function of the scattering angle, for light polarized parallel and perpendicular to the scattering plane. These sets of data were used to determine the radius and refractive index of the spheres by fitting the data to the scattering function obtained from Mie theory. The light was produced by a He·Cd laser...

This article describes an instrument to measure the error motion of rolling element bearings. This challenge is met by simultaneously satisfying four requirements. First, an axial preload must be applied to seat the rolling elements in the bearing races. Second, one of the races must spin under the influence of an applied torque. Third, rotation of the remaining race must be prevented in a way ...