A total of 201 complete television frames of Mars were returned by Mariners 6 and 7 in late July and early August of 1969. During the subsequent year over 3500 different versions of those frames were generated by computer processing involving the production of about 35,000 individual photographic prints and large amounts of computer printout as well. This extensive data processing and distribut...

For over twenty-five years, the Reference Monitor Concept [1] has proved itself to be a useful tool for computer security practitioners. It can also be used as a conceptual tool in computer security education. This paper describes a computer security education program at the Naval Postgraduate School that has used the Reference Monitor concept as a unifying principle for courses, laboratory wor...

The comparatively small but seriously lethal epidemic ?f virulent or " malignant" diphtheria described in this article exhibited certain unusual clinical and bacteriological characteristics which were thought to of sufficient general interest to warrant recording. The cases comprised a series of 40 in number from the middle of January, 1929, to May 14th, 1929. There were 22 males and 18 females...

In reviewing this subject briefly, one finds that at the turn of the century, "infantile paralysis," as it was then called, was considered to be "rather rare after the age of six."' Indeed more than 50 per cent of the cases were under two years of age. In one of the earliest epidemics in the United States, occurring in Vermont in 1894, 90 out of the 120 cases whose ages were given were under th...

OBJECTIVES We propose an automatic breast mass detection algorithm in three-dimensional (3D) ultrasound (US) images using the Hough transform technique. METHODS One hundred twenty-five cropped images containing 68 benign and 60 malignant masses are acquired with clinical diagnosis by an experienced radiologist. The 3D US images are masked, subsampled, contrast-adjusted, and median-filtered as...

"Predecisional information distortion" occurs when decision makers evaluate new information in a way that is biased towards their leading option. The phenomenon is well established, as is the method typically used to measure it, termed "stepwise evolution of preference" (SEP). An inadequacy of this method has recently come to the fore: it measures distortion as the total advantage afforded a le...

Value sets for the EQ-5D-5L are required to facilitate its use in estimating quality-adjusted life years. An international protocol has been developed to guide the collection of stated preference data for this purpose and has been used to generate EQ-5D-5L valuation data for England. The aim of this paper is report the innovative methods used for modelling those data to obtain a value set. Nine...

Ground beef has been implicated as a transmission vehicle in foodborne outbreaks of infection with pathogens such as Escherichia coli O157:H7 and Salmonella. During outbreak investigations, traceback of contaminated beef to the producing facility is often unsuccessful because of inadequate recordkeeping at retail establishments that grind beef products. We conducted a survey in three states par...

This paper attempts to stand back and consider how the field o f software dependability research has progressed over the last twenty-five or so years. It provides a personal perspective on early developments such as the recovery block and the Nversion programming scheme, and on more recent research in which the author has been involved aimed at unifying and extending these schemes. It then disc...

Architecture is part of everyone’s daily life, we live in buildings, and our life is an ongoing transit between open and enclosed spaces. One of the main attractions for a tourist is definitely architecture. Architecture, urbanism and tourism involve several players. Among them are travel agencies and organizations that promote specialized trips. Arquexplora is the result of my background as an...