1206 CLINICAL CHEMISTRY, Vol. 41, No. 8, 1995 niques for obtaining P values by means of the z statistic. In the general case of ROC plots for two different tests applied to the same set of patients, account must be taken of the correlation between the areas under each curve because, clearly, these are related. Zweig and Campbell discuss the importance of this aspect in their recent review (3). ...

In an earlier paper (Adv. Appl. Math. 29 (2002), 137–151) on the determinants of certain period matrices, we formulated a conjecture about the determinant of a certain hypergeometric matrix. In this article, we establish this conjecture by constructing a system of linear equations in which that determinant is one of the variables. As a consequence, we obtain the value of an integral which gener...

The aim of this work is to propose a method based on B-splines for signal filtering and signal reconstruction. The proposed approach consists of applying the Moore-Penrose inverse for the reconstruction of noisy signals and the use of smoothing techniques with a Whittaker smoother to control the roughness of variation in order to extract the signal from a noisy series. The advantages of this me...

Consider an exchange economy with complete information. We perturb this economy by assuming that each agent’s observation about the true state of the world is noisy. The paper investigates the robustness of equilibria of the complete information economy with respect to incomplete information. We provide conditions under which complete information equilibria are limits of equilibria of the econo...

The T4 mutations px, y and 1206 inactivate an error-prone recombination-like repair system, reducing or abolishing mutagenesis by UV irradiation, MMS, and white light irradiation in the presence of the photosensitizer 8MOP. Both px and y increase some spontaneous mutation rates and slightly enhance proflavin mutagenesis; neither mutation affects thymineless or 2AP mutagenesis appreciably, but b...

Recently, there has been a great interest in Islamic software that try to harness computer to serve the religion. This brought about some applications and programs for the Holy Quran and its sciences, Hadith " ثيدحلا" (Prophet’s Tradition) and its methodology, Fiqh "ه قفلا" (Islamic jurisdiction), and Islamic law in general. However, these computer-programs, especially those developed for the s...