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I.P. skvortzov and imperial Kazan university
No full text© 2019, Ecozone, OAIMDD. All rights reserved. Irinarkh Polikhronievich Skvortzov was a famous Russian scientist. He was born on 5 August, 1847. I.P. Skvortzov graduated from Imperial Kazan University with MD degree. All his life was connected with medical and educational activities. Scientific interests mainly concerned hygiene and microbiology. He was the author of some original microbiological hypothesis. I.P. Skvortzov made a great input to Russian and international science in the end of XIX century. This historical review opens for the first time I.P. Skvortzov for Western readers
Notes on meteorological balloon mission planning
No full textIn the 21st century the high altitude gas balloon remains an indispensable tool in atmospheric science, meteorology and other applications requiring stratospheric observations. A prerequisite of the effectiveness of many types of balloon operations is an accurate trajectory forecasting capability, complete with appropriate error estimates. This is particularly important in targeted flights, sample return missions or flights of expensive instruments, whose recovery is essential. The ASTRA (Atmospheric Science Through Robotic Aircraft) initiative led to the development of such a forecast model, which is at the centre of the present paper. A key source of error in such models is our incomplete understanding of the drag opposing the rise of balloons in the free atmosphere – here we propose a new, stochastic model based on empirical data derived from thousands of radiosonde flights. We also examine other sources of prediction error affecting the accuracy of the flight path forecast, such as uncertainties in the wind profile and balloon envelope manufacturing variability. A Monte Carlo framework is used to provide probabilistic touchdown point estimates taking these error sources into account. The above elements have been integrated into a web service, which can be used as a flight planning tool – here we review the key features of its architecture
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
RRS Discovery Cruise 240, 11 May-28 May 1999. Ocean Technology Division instrument trials cruise over the Goban Spur, Pendragon Escarpment and Porcupine Abyssal Plain
Get PDFThe principal objective of the cruise was to test, verify and trial a range of oceanographic instruments developed within SOC in a deep water, free field environment not possible in a land-based laboratory. The instruments included:1. Mini Profiler Vehicle (MPV); 2. SUMOSS optical spectrometer; 3. A profiling CTD mooring system; 4. A new design of cable fairing for the SeaSoar vehicle; 5. SHRIMP video and camera vehicle'; 6. Scatterometer profiler system; 7. Deep water stills cameraThe work area - in the vicinity of the Goban Spur and the Porcupine Abyssal Plain - was chosen with care so as to give a wide range of terrain and water depths, from the continental shelf to abyssal plain, to suit the various instruments testing requirements within a small area.During the cruise, as well as the deep-water instrument and vehicle trials, there were also elements of training new staff and the development of safe working and handling practices.This cruise demonstrated the huge advantages of being able to test equipment in a deep-water environment. All the instruments deployed benefited from the results obtained, whether they highlighted unknown problems or confirmed theoretical designs. The cruise also highlighted that trials of this kind rapidly accelerate the speed of development of both equipment and instrumentation and are almost a necessity for new designs prior to their being used in anger on scientific cruises
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