Coastal areas are one of the most threatened natural systems in world. Environmental beach indicators, such as erosion and deposition rates exposed beaches Andalusia (640 km), were calculated using upper limit active profile detailed orthophotos (1:2500) for periods 1956–1977, 1977–2001 2001–2011. A hybrid classification method, both supervised unsupervised, based on machine-learning (ML) techn...

The data for the present investigation were collected between August, 1951, and August, 1956, in the Butterley Company's works at Codnor Park. In some of the shops of these works the noise is so intense that outsiders experience it as unpleasant and in some spots even as unbearable. During the period mentioned no protective devices were in use, largely because the workers found many of the exis...

Gross and Hufnagel (1945) and Crafoord and Nylin (1945) independently reported successful repair of the coarctation of aorta. Since then many thousand patients have had surgical correction of this anomaly (Bailey, 1957; Campbell and Baylis, 1956; Cleland et al., 1956; Keith, Rowe, and Vlad, 1958). There have been numerous reports dealing with the immediate post-operative period (d'Abreau and Pa...

In 1954 a paper was published (Collis, Kelly, and Wiley) which described a study of the control of reflux at the lower end of the oesophagus and put forward an operative technique based on the findings. This operation has been used since that time, and this paper gives the experience from the first 200 consecutive cases. The period covered is from March, 1953, to March, 1960, but of special int...

We present a bibliometric study of a corpus of 839 bibliographic references about automatic indexing, covering the period 1956-2000. We analyse the distribution of authors and works, the obsolescence and its dispersion, and the distribution of the literature by topic, year, and source type. We conclude that: (i) there has been a constant interest on the part of researchers; (ii) the most studie...

Two 900-year records of annual accumulation at South Pole are compared to evaluate the origin and significance of observed variations. Despite difficulties establishing absolute timescales, due to problems identifying annual layer markers, the two records can be correlated with confidence after moderate smoothing. This correlation shows that over the time period considered (1050-1956 A.D.) no c...