179,830 research outputs found
Carta de R. Landa a Pedro Dorado Montero
No full textCarta de D. R. Landa, secretario de la Junta para la Ampliación de Estudios, a D. Pedro Dorado Montero, relacionada con el pago de los gastos de viaje de D. Pedro a París
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Rodolfo Landa, Rodolfo Echeverría, Ferrusquilla y otros conversando durante un evento.
No full textFERRUSQUILLA G. ALPUCHE R. ECHEVERRIA RODOLFO LANDA, I.O
"Closing the R&D Gap, Evaluating the Sources of R&D Spending"
No full textBoth spending and tax policies have been implemented in the United States with the goal of stimulating private sector research and development (R&D). Karier questions whether current R&D policy, especially the research and experimentation tax credit, can contribute to closing the gap between nondefense expenditures on R&D in the United States and such expenditures in other countries, such as Japan and Germany. He also explores possible changes to our current R&D policy to make it more effective.
Combining workload balance and patient priority maximisation in operating room planning through hierarchical multi-objective optimisation
No full textPrevious analysis suggested the opportunity to consider the preferences of different stakeholders (hospital, patients, doctors and nurses) through the adoption of both patient priority maximisation and workload balance as performance criteria. The aim of this paper is to develop an effective and efficient solution approach for the operating room planning and scheduling capable to take into account the patient priority maximisation and workload balance criteria at the same time. This work is inspired by the need of a deeper understanding of the quality of the solutions obtained when a combination of the two criteria leads the OR planning decisions. Starting from a hierarchical multi-objective optimisation model for the combined master surgical scheduling and surgical cases assignment problems, we develop a class of new multi-neighbourhood local search based matheuristic algorithms, whose main feature is to exploit an ad hoc neighbourhood to generate better solutions in a significant shorter running time. A broad quantitative analysis on new realistic instances proves the effectiveness and the efficiency of the proposed matheuristic algorithms as well as to evaluate the quality of the computed solution from an operating room management perspective
Mt. Sinai Poker Club, September 1971
No full textBack row: Wally Sandack, Herm Bernstein, Ted Burnett, Jack Sweet, Milt Rosen, Jules Cournger(sp?), Al Smith, Al Krener(sp?). Middle row: Jane I., Hannah K., Corinne Sweet, Esther R. Landa. Front row: Bernice Smith, Helen Sandack, Bernice Bernstein, Barbara Burnet
A Thousand Years of Nonlinear History. By Manuel De Landa. New York: Zone Books, 1997. Pp. 333. $16.00.
No full textThe title of this book is an outline of De Landa s agenda. He wants to convey his philosophical approach to history using examples chosen from the last 1,000 years of human history. Nonlinear refers to feedbacks and interactions that prevent movement toward a unique equilibrium. The author interprets history through a series of extended metaphors that link biology, geology, and linguistics to human history. The book is divided into sections corresponding to these classifications. The first, Lavas and Magmas, makes connections between history and geology; the second, Flesh and Genes, connects history and biology; and the third, Memes and Norms, connects history with linguistics. Within each section De Landa illustrates his approach with examples from the (approximately) last thousand years of nonlinear history.
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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