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Reed Reactor Facility. Final report
No full textThis report discusses the operation and maintenance of the Reed Reactor Facility. The Reed reactor is mostly used for education and train purposes
Letter from S.G. Brooks to Aunt Abbey, undated
No full texthttps://rdc.reed.edu/v1/resources/3a39a4cd-f4d2-453a-aeb0-e0b3957e72ef/thumb/128.jp
Letter from S.G. Studley to Thomas Lamb Eliot
No full texthttps://rdc.reed.edu/v1/resources/11ed0b14-ebbb-4c02-b873-1ee7c9e820ee/thumb/128.jp
Quasi-stationary model of air flow in the reed channel of single-reed woodwind instruments
No full textA quasi-stationary model of the flow in the reed aperture of single-reed woodwind instruments such as the clarinet and the reed-organ pipe has been developed. The model is based on a numerical study of the flow through a two-dimensional channel (Borda tube). It includes the effect of flow separation and friction. The resulting expression for the hydrodynamic force on the reed contains a nonlinear dependence on the reed channel aperture. This dependence partially explains the observed correlation between blowing pressure and playing frequency. The strong increase of frequency with blowing pressure observed at high pressures, however, is mainly due to the beating of the reed against the lay. Flow separation may either occur locally at the entrance of the channel or occur along the entire channel length. The transition from one type of behaviour to the other leads to hysteresis in the force on the reed. This hysteresis may be of fundamental importance for understanding reed operation in the absence of acoustical feedback and hence the onset of oscillation
University as Destiny: To the 65th Anniversary of Doctor of Historical Sciences, Professor S.G. Sidorov
No full textThe article is prepared for the 65th anniversary of Doctor of Historical Sciences, Professor of the Department of Russian and World History, Archaeology of Volgograd State University Sergey G. Sidorov. The article traces the biography of S.G. Sidorov, his pedagogical, scientific, and administrative activities. It is shown that fundamental foundations of the future pedagogical and scientific work of S.G. Sidorov were laid at the Faculty of History of Saratov State University named after N.G. Chernyshevsky, from which he graduated in 1981. Most of Sergey Grigoryevichs life is connected with Volgograd State University, where he has been working since 1986. He combined teaching historical disciplines with the administrative work. S.G. Sidorov was Vice-rector for Academic Affairs for 25 years. Being in this position he has done a lot to make Volgograd State University a leader in the region in training highly qualified specialists. S.G. Sidorov is one of the leading experts on the history of the Great Patriotic War. He is the author of the first fundamental comprehensive study of using labor of prisoners of war of the Second World War in the national economy of the USSR in 1939–1956. With his active participation, six volumes of Documents and Materials “Prisoners of War in the USSR. 1939–1956” were published. Since 2009, S.G. Sidorov has been the Head of the Dissertation Council on Historical Sciences at Volgograd State University. From 2014 to 2020, largely due to the efforts of S.G. Sidorov, Volgograd State University held five International Thematic Scientific Conferences “Military History of Russia: Problems, Searches, Solutions”
The shift bound for cyclic, Reed-Muller and geometric Goppa codes
No full textWe give a generalization of the shift bound on the minimum distance for cyclic codes which applies to Reed-Muller and algebraic-geometric codes. The number of errors one can correct by majority coset decoding is up to half the shift bound
The shift bound for cyclic, Reed-Muller and geometric Goppa codes
No full textWe give a generalization of the shift bound on the minimum distance for cyclic codes which applies to Reed—Muller and algebraic-geometric codes. The number of errors one can correct by majority coset decoding is up to hdlf the shift bound
The simulation of free surface flows with Computational Fluid Dynamics
No full textComputational fluid dynamics is a powerful and versatile tool for the analysis of flow problems encountered in themaritime environment. The University of Southampton Fluid-Structure Interactions research group use ANSYS CFX tomodel a wide variety of flow problems; to gain insight into flow physics, improve designs and increase the efficiencyand safety of marine vehicles. A series of three case studies from on-going research looks at: loads applied on liquefiednatural gas tanks due to sloshing, slamming pressures experienced by high speed craft as well as the influence ofpropellers on the resistance characteristics of autonomous underwater vehicles. The presence of the free surface,complex shapes and the unsteady nature of these applications make their simulation with computational fluid dynamicsparticularly challenging. The successful validation of the computational models has resulted in the development of aselection process for suitable multiphase models as well as cost-effective meshing strategies
Productivity and sustainable use of Phragmites in the Fuyeni reedbed — Hluhluwe-Umfolozi Park — Management guidelines for harvest
No full textPhragmites australis (Cav.) Steud and Phragmites mauritianus (Kunth) reeds have been harvested from the Fuyeni reedbed in the Umfolosi section of the Hluhluwe-Umfolosi Park by neighbouring communities since 1972. A study to assess the impact of annual reed harvest on the density and size structure of the reedbed was done after concern was raised by reserve managers that harvest was possibly non-sustainable. Reed standing stock was estimated and the effect of three different harvest rates on reed density and size structure examined. The project aimed to make recommendations for the long term sustainable use of Phragmites from the Fuyeni reedbed. Results show that cut areas have higher total reed density than uncut areas and that cutting may be stimulating reed recruitment. The size structure of the reedbed is influenced by cutting through the removal of large reeds. Sixty-six percent of the total reed density in uncut areas consists of large reeds while no more than 15% of the total density in cut areas is made up of large reeds. Reed regeneration after cutting is rapid, but the proportion of large reeds remains low. No correlation was found between reed density and mean monthly rainfall. Harvest of no more than 30% of the number of large reeds in the population is recommended. A given area should be harvested no more frequently than biennially to allow young shoots to mature into large, usable reeds and to minimise impact on the reedbed and associated fauna
Mesoscopic electrochemistry in nanofluidic devices
No full textThis thesis describes nanofluidic devices capable of detecting small numbers of redox-active molecules and even single molecules. The detection relies on redox cycling, in which diffusive molecules rapidly transfer electrons between two parallel electrodes embedded in a thin, solution-filled channel. This high sensitivity permits studying the mesoscopic regime of electrochemistry in which the discreteness of molecules and statistical fluctuations can no longer be ignored.Kavli Institute of NanoscienceApplied Science
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