203,266 research outputs found
Extracting bull and bear markets from stock returns
No full textTraditional methods used to partition the market index into bull and bear regimes often sort returns ex post based on a deterministic rule. We model the entire return distribution; two states govern the bull regime and two govern the bear regime, allowing for rich and heterogeneous intra-regime dynamics. Our model can capture bear market rallies and bull market corrections. A Bayesian estimation approach accounts for parameter and regime uncertainty and provides probability statements regarding future regimes and returns. Applied to 123 years of data our model provides superior identification of trends in stock prices.Markov switching, bear market rallies, bull market corrections, Gibbs sampling
A nutritional guide to feeding Pacific Northwest barley to ruminants
No full textBulletin no. 776 Moscow, Idaho :University of Idaho, College of Agriculture, Agriculture Experiment Station, 1995-03-01. Author(s): Bull, Richard C
Interview of Colin Bull by Brian Shoemaker
No full textKey Individuals Mentioned
1. Frank Debenham, physiographer on Scott’s Last Expedition and first Director of the Scott Polar Research Institute, p.1
2. Herbert Ponting, photographer on Scott’s Last Expedition, p.2
3. Wilson, zoologist and artist on Scott’s Last Expedition, p.2
4. Stan Paterson, surveyor in Greenland, p.2
5. Hal Lister p.2, 15
6. Fritz Loewe, p.3, 4, 28, 29
7. Georgi, p.3, 4
8. Sorge, p.3, 4
9. Raymond Priestley, vice-chancellor of Birmingham University, p.5, 6, 19
10. Lancelot Fleming, p.8
11. Commander C. J. W. Simpson, p.8, 13
12. Taffy (Jack) Oakley, p.10
13. Roy Homard, went on Bunny Fuchs’s Transantarctic Expedition, p.11
14. Gillian Bull (Dr. Bull’s wife), p.14, 26, 27, 54
15. Bunny Fuchs, p.11. 14
16. Barrie McKelvey, p.15, 16
17. Peter Webb, p.15, 16
18. Dick Barwick, p.16, 20
19. Bob Nichols, p.21, 22
20. Bob Dawson, p.22
21. Ron Balham, p. 22
22. Ralph Wheeler, p.23
23. Ted Thorne, p.23
24. Bob Clark, p.23
25. Dufek, p.24, 25.
26. Tyree, p.24, 25
27. Dawn Rodley, later became Dawn Beck, p. 23, 24, 25, 26
28. Dick Goldthwait, p.26, 27, 30, 49, 52, 54
29. David Elliot, p.30, 49, 50, 51
30. John Mercer, p.31, 49
31. Kaye Everett, p.31, 49, 54
32. Mainly Mort, p.31, 32, 38, 40, 51
33. Tom Jones, p.31
34. Lois Jones, p. 38, 39, 41
35. George Llano, p.31, 32
36. Lonnie Thompson, p.32, 37
37. Ian Whillans, p.33
38. Gerry Holdsworth, p.33, 34
39. Cedo Marangunic, Chilean who came from Santiago to work with Dr. Bull on the Sherman Glacier, p.33, 36
40. Wayne Hamilton, p.35, 36
41. Olav Orheim, Head of the Norwegian Polar Institute, p.36, 37, 42
42. Ann Davey, p.37, 38
43. Almut Iken, p.38
44. Kay Lindsey, p.39, 41
45. Eileen McSavenney, p.39, 41
46. Terry Tickhill, p.39
47. Paul Dalrymple, p.40, 41
48. Kelly Welsh, p.41
49. Jim Zumberge, p.43
50. Larry Gould, p.43, 52, 57
51. John Heap, p.49The media can be accessed at the links below.Audio Part 1: http://streaming.osu.edu/knowledgebank/byrd/oral_history/Dr_Colin_Bull_1.mp3Audio Part 2: http://streaming.osu.edu/knowledgebank/byrd/oral_history/Dr_Colin_Bull_2.mp3Dr. Bull was born in Birmingham, England, grew up in Herefordshire, and became a U.S. citizen in mid-1970s. When he was young, Dr. Bull read books regarding on Antarctic expeditions such as “South with Scott,” by Evans and “Mid-Ice” by Georgi on Wegener Greenland Expedition, which impressed him deeply. Dr. Bull attributes his interest in the polar regions to his association with Scott Expedition members – Fritz Loewe, Georgi and Sorge.
Dr. Bull received his PhD at Birmingham University in Condensed Matter Physics in 1951. Dr. Bull went on his first polar expedition to Spitsbergen in 1951 under Sir Raymond Priestley’s patronage. He also volunteered for the British North Greenland Expedition led by Commander C. J. W. Simpson between 1952 and 1954. During this period, he, Mike Banks and Taffy Oakley attempted to measure the thickness of the ice by gravity in the areas of St. John’s Fjord in Prince Charles Foreland. They traversed North Greenland for their magnetic recording, and he calls it “the slowest traverse of Greenland on record.”
When he came back to England, he lectured about the expedition and edited a book on the subject, which eventually became Venture to the Arctic, published by Penguin. A couple of books about the expedition were written by the members: North Ice by the leader Simpson and High Arctic by Mike Banks. He also went on the expedition to Norway to the Austerdalsbrae Glacier in 1955, and then 1958-1959, South Victoria Land, and 1960-1961, Sukkertoppen. In 1963-64, he went to Byrd Station and participated on the traverse out to the Whitmore Mountains.
In 1956 he married. Shortly afterward, he departed for New Zealand in order to take a lecturer position at Wellington University. Upon his arrival, Dr. Bull organized the Victoria University of Wellington Antarctica Expedition. The members of the first New Zealand Antarctica expedition of 1958-1959 led by Dr. Bull included Peter Webb, Barrie McKelvey, and Dick Barwick. Their research was conducted in the Dry Valleys near McMurdo. Dr. Bull named the Wright Valley after Sir Charles Seymour Wright of the Scott Expedition. Bull Pass, the McKelvey Valley, Webb Glacier and the Barwick Valley were named by this expedition.
While in New Zealand he made a concerted effort to take women researchers to Antarctica, but without success. Dr. Bull organized a follow-on expedition for the 1959-60 season that included a woman research member named Dawn Rodley. The U.S. Navy refused to fly her to the Dry Valleys, however. This was probably the first effort to include a woman researcher in a modern Antarctic Expedition.
In March 1961 Dr. Bull took a position as visiting professor at the Institute of Polar Studies, The Ohio State University. The position became permanent and he worked at OSU for the following 25 years. He was Director of the Institute from 1965 to 1969. He then became Chairman of the Department of Geology, and then in 1972, he became Dean of Mathematics and Physical Sciences and served on many polar boards and study groups since that time. Dr. Bull helped write the proposal to the family of Richard E. Byrd in 1972 requesting that they archive his papers at Ohio State. He promised to change the name of the Institute of Polar Studies to the Byrd Polar Research Center if they did. The family accepted and BPRC is today an established national institution.
Dr. Bull sponsored many scientific expeditions to the Antarctic and the Arctic during this period. He is especially proud that he sponsored 14 researchers for their doctorates and imported many other high quality researchers to Ohio State. In 1969 he sponsored the first female field expedition to the Antarctic led by Dr. Lois Jones and including Kay Lindsay, Eileen McSaveney and Terry Tickhill. He has been on most polar boards including the Polar Research board, and was also Chairman of the SCAR Working Group on Glaciology. He retired in 1986 moved to Bainbridge Island Washington where he is active in the polar tourist business and collecting and selling books from the Polar Regions. He has since made eight trips to Antarctica with tourist groups.
Major Topics
1. British North Greenland Expedition led by Commander C. J. W. Simpson between 1952 and 1954
2. Wright Valley and Sukkertoppen Ice Cap
3. The first female field expedition to the Antarctic
4. SCAR (Scientific Committee on Antarctic Research)
5. INSTAAR
6. IAATO — International Association of Antarctic Tour OperatorsFunded by a grant from the National Science Foundation
Tucumcari Bull Test, Sale report, 1976
No full textReport containing the sale data for bulls participating in the 15th Annual Tucumcari Bull Test
Tucumcari Bull Test, Sale report, 1979
No full textReport containing the sale data for bulls participating in the 18th Annual Tucumcari Bull Test
Tucumcari Bull Test, Sale report, 1977
No full textReport containing the sale data for bulls participating in the 16th Annual Tucumcari Bull Test
Tucumcari Bull Test, 84-day report, 1976
No full textPeriodic report from the 1975-76 Tucumcari Bull Test, including information on measurement methodologies used during testing and measurement results for participating bulls
Initial report, Tucumcari Bull Test, 1977
No full textInitial report of the 17th Annual Tucumcari Bull Test, including information on the test schedule and beginning data on the bulls involved in the test
Duration Dependence in Stock Prices: An Analysis of Bull and Bear Markets
No full textThis paper investigates the presence of bull and bear market states in stock price dynamics. A new definition of bull and bear market states based on sequences of stopping times tracing local peaks and troughs in stock prices is proposed. Duration dependence in stock prices is investigated through posterior mode estimates of the hazard function in bull and bear markets. We find that the longer a bull market has lasted, the lower is the probability that it will come to a termination. In contrast, the longer a bear market has lasted, the higher is its termination probability. Interest rates are also found to have an important effect on cumulated changes in stock prices: increasing interest rates are associated with an increase in bull market hazard rates and a decrease in bear market hazard rates.
Tucumcari Bull Test, Final report, 140 days
No full textPeriodic report from the 1977 Tucumcari Bull Test, including information on measurement methodologies used during testing and final measurement results for participating bulls
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