1,725,115 research outputs found
Rodney A. Briggs Interview, 1976
Get PDFFirst Dean and Provost Rodney A. Briggs discusses the founding of the University of Minnesota Morris and what it took to get the liberal arts college running in the first few years.https://digitalcommons.morris.umn.edu/stories/1049/thumbnail.jp
Letter dated 29 October 1984 from Rodney A. Briggs to Lorenzo A. Richards
No full textLetter dated 29 October 1984 from Rodney A. Briggs, Executive Vice President of the American Society of Agronomy and two related societies, to Lorenzo A. Richards regarding membership renewalAMERICAN SOCIETY OF AGRONOMY CROP SCIENCE SOCIETY OF AMERICA SOIL SCIENCE SOCIETY OF AMERICA 677 South Segoe Road • Madison Wl • 53711 • (608) 274-1212 29 October 1984 Dear Member: It is amazing to me that the end of 1984 is advancing so rapidly. With this realization, we must prepare for the American Society of Agronomy, Crop Science Society of America and Soil Science Society of America membership renewal for the 1985 calendar year. I\u27m sure you\u27ll agree with me that membership in our Societies is one of the best bargains in the professional world today. This has been a wery productive year for the Societies. Many good papers have been published; you have had the opportunity to express your views about the Societies, its publications and various other areas via the membership survey; the Short-Term Enrichment Program for foreign graduate students studying in the United States was initiated; the Placement Service activities have been increased; and numerous other membership services have been started, continued or expanded. Note, too, that again this year your membership dues have not increased. Beginning this year, you are being given the opportunity to receive your Agronomy Journal, Crop Science or SSSA Journal in microfiche form in place of the printed edition. If you wish the microfiche form, simply mark your renewal in the place provided. You will not want to miss any of the services provided with your membership, so don\u27t hesitate or put your enclosed renewal notice aside. Fill it out now, attach your payment and mail it today. Not only will it save you the bother of looking up the form again or maybe forgetting to renew, but it will help us to get a head start on the processing of the 1985 renewals. &R^ Rodney A. Bri Executive ViceV^resident ^ RAB/CCT:djm Enclosures A SA Kenneth J. Frey, president Iowa State University William E. Larson, president-elect University of Minnesota Charles F. Eno, past president University of Florida CSSA Wayne F. Keim, president Colorado State University Robert F Barnes, president-elect ARS, USDA William L Colville, past-president University of Georgia SSSA Donald R. Nielsen, president University of California Edward C A. Runge, president-elect Texas A & M University Walter H. Gardner, past president Washington State University Rodney A. Briggs, executive vice president, ASA, CSSA, SSS
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
Book review: Images of a Free Press. By Lee C. Bollinger.
Get PDFBook review: Images of a Free Press. By Lee C. Bollinger. Chicago:
The University of Chicago Press. 1991. Pp. 222. Reviewed by: Rodney A. Smolla.Smolla, Rodney A.. (1992). Book review: Images of a Free Press. By Lee C. Bollinger.. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/166444
Innovative Cryogenic Cooling Method for Megawatt Superconducting Motor of Electric Propulsion
No full textThis presentation describes and discusses key technologies for cooling Megawatt-scale fully-superconducting synchronous motor. In order to satisfy the power density requirement above 10 kW/kg for electrically-propelled aircraft, it is necessary to develop a compact cryogenic refrigeration system and minimize the auxiliary cooling interface with both superconducting field winding and armature coils. There are three significant strategies we propose in this presentation. First, the cooling scheme for the superconducting rotor is the design with a dedicated two-stage Stirling or Stirling-type pulse tube cryocooler which is mounted on the rotating frame. This configuration enables one to adopt a directly coupled conduction cooling method with minimum hardware. It also obviates a ferrofluidic gas coupling so that better reliability at high rotation speed can be achieved with a smaller parasitic heat load in conjunction with cryogenic fluid handling. To reduce the cryogenic cooling burden of the cryocooler, we design the rotor winding with ReBCO coils that are cooled at 50 K. Two-stage configuration of the cryocooler is purposefully integrated so that the first stage cooling blocks the majority heat load from room-temperature environment. The dominant cooling loads of the superconducting rotor are conduction through the torque tube and the radiation in the vacuum-insulated cryostat because the AC loss of the field winding is negligible. The field winding is inherently DC and the AC ripple from the stator is virtually shielded in the damper. This intermediate thermal anchoring is critical to reducing the size of the cryocooler. The first stage of the cryocooler at 100 K effectively cools the structure before the heat penetrates to the lower temperature section. Further optimization of the cryocooler design shall be done with the heat load calculation of the specific superconducting rotor. Second, no physical contact for electric current supply from room temperature and no fluid coupling from the stationary environment to the rotor. The former is possible with implementing a flux pump and the latter with conduction cooling by the on-board cryocooler. An efficient cooling by the directly coupled conduction cooling with the on-board cryocooler is advantageous. The temperature difference between the superconducting coil and the cold head of the cryocooler is minimized with the smallest cooling load which does not involve gas coupling between the rotating and stationary frames. By this configuration, the rotor winding which is composed of ReBCO coil is cooled at 50 K. Third, the stator is expected to generate significant heat by AC loss whatever superconductor is used for the armature. The only viable cryogenic solution for lightweight requirement of aviation demand is liquid hydrogen. Since the AC loss will be an order of kW level in a megawatt superconducting stator, the stationary armature should be energized in a liquid hydrogen bath around 20 K to exploit the full potential of maximizing the power density as a compact structure. It is also worthwhile to note the superheated temperature for the critical heat flux of liquid hydrogen is relatively small. The surface area for cooling, therefore, must be large enough and the heat flux should be small so that film boiling is avoided. The volumetric latent heat of liquid hydrogen is only 31 J/cc compared to 2264 J/cc of water, which means that it is easy to trap the vaporized hydrogen in the vicinity of the heated surface (multifilamentary MgB2 wire in our design) under high heat flux conditions. The vapor region in the film boiling regime may detrimentally give rise to excessive temperature rise of the surface. Great care must be taken for designing the cooling system of liquid hydrogen for the superconducting stator as a result. Regardless of pool boiling or flow boiling configuration in the stator, lowering the total AC loss is very important and it is the only way to enable a small tem
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Book review: Suing the Press. By Rodney A. Smolla.
Get PDFBook review: Suing the Press. By Rodney A. Smolla. New York,
N.Y.: Oxford University Press. 1986. Pp. 277. Reviewed by: Mark Silverstein.Silverstein, Mark. (1987). Book review: Suing the Press. By Rodney A. Smolla.. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/164942
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