21,455 research outputs found
Report on Meteorological Research March 1, 1935 (m-1)
No full textThe object of the report was to elucidate in detail the various features of the research program in meteorology being carried on at the Daniel Guggenheim Airship Institute in Akron, Ohio. Mr. L. J. Fangman, of the U.S. Weather Bureau, was collaborating with the author in carrying out work such as a study of autographic records of the various meteorological elements during frontal passages with a view to the possible prediction of the intensity of the accompanying disturbance as it may affect the operation of aircraft and a study of atmospheric gustiness with a view to finding the dependence between frequency end amplitude of velocity fluctuations and the vertical temperature and velocity gradients
Evaluation in the crowd: an introduction
No full textHuman-centred empirical evaluations play important roles in the fields of human-computer interaction, visualisation, and graphics. The advent of crowdsourcing platforms, such as Amazon Mechanical Turk, has provided a revolutionary methodology to conduct human-centred experiments. Through such platforms, experiments can now collect data from hundreds, even thousands, of participants from a diverse user community over a matter of weeks, greatly increasing the ease with which we can collect data as well as the power and generalisability of experimental results. However, such an experimental platform does not come without its problems: ensuring participant investment in the task, defining experimental controls, and understanding the ethics behind deploying such experiments en masse. This book is intended to be a primer for computer science researchers who intend to use crowdsourcing technology for human centred experiments. It focuses on methodological considerations when using crowdsourcing platforms to run human-centred experiments, particularly in the areas of visualisation and of quality of experience (QoE) for online video delivery. We hope that this book can act as a primer to researchers in our fields that intend to run experiments on crowdsourcing for the purposes of human-centred experimentation
(Fourth) Report on Meteorological Activities at the DGAI (8-1-36)(Weather Bureau Copy)
No full textThis report is on the investigations of frontal phenomena at the Daniel Guggenheim Airship Institute in Akron, Ohio from January 1, 1935 through August 1, 1936. The investigation was carried out with the cooperation of the U.S. Bureau of Aeronautics, the U.S. Weather Bureau, the California Institute of Technology, and the Guggenheim Airship Institute. Mr. R.C. Robinson of the Weather Bureau cooperated with the author in carrying out the investigation. The object of the investigation was to determine the intensity of the atmospheric disturbances (i.e. rapidity of wind shift and gustiness) accompanying the passage of cold fronts, along with a study of the characteristics of the air masses involved and other features which might affect the intensity of the disturbance. The report treated thirty cold fronts which passed the station during 1935 to 1936
Archives and Images as Repositories of Time, Language, and Forms from the Past: A Conversation with Daniel Eisenberg
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La croissance des enfants Sara de 3 à 10 ans à Fort-Archambault (République du Tchad)
No full textSummary. The growth of the Sara children from 3 to 10 years in Fort-Archambault (Chad Republic). Thirty-four measurements were taken on 170 boys and 157 girls from 3 to 10 years old in Ford-Archambault (Chad). The sequence of the Sara age class means is studied for itself, and by comparison with that of other populations having a similar adult stature. A lack of increase, or a decrease, from 8 to 9 years is observed for many variables. It is more marked in boys than in girls. It is explained as the lasting mark of a debilitating stress suffered in infancy, which the female sex would have supported better. The comparison of the growth curves of the Sara, Tutsi of Rwanda and American Whites, as well as the lack of resuming gains at 10 years shown by the skinfolds of the Sara, suggest that the mean age of menarche in this population is around 16 years.Résumé. Trente quatre mensurations ont été prises sur 170 garçons et 157 filles Sara de 3 à 10 ans à Fort-Archambault (Tchad). La séquence des moyennes Sara par tranche d'âge est étudiée en soi et par comparaison avec celle de populations de même taille adulte. Un plateau, voire une décroissance s'observent de 8 à 9 ans pour de nombreuses variables. Le phénomène est plus marqué chez les garçons que chez les filles. Il est interprété comme la trace persistante d'une agression débilitante subie dans la première enfance, à laquelle le sexe féminin aurait mieux résisté. La comparaison de la pente des courbes de croissance des Sara, des Tutsi du Rwanda et des Blancs Américains, ainsi que l'absence de reprise de gains annuels des plis cutanés à 10 ans chez les Sara, suggèrent que l'âge moyen de la puberté féminine chez ces derniers est de l'ordre de 16 ans.Hiernaux Jean, Asnes Daniel. La croissance des enfants Sara de 3 à 10 ans à Fort-Archambault (République du Tchad). In: Bulletins et Mémoires de la Société d'anthropologie de Paris, XIII° Série. Tome 1 fascicule 4, 1974. pp. 427-453
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