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{{WikiProject Biography |class=|living=yes |listas=Crosse, Amanda |s&a-work-group=y}} | ||
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| {{short description| |
{{short description| South African}} | ||
| {{Infobox scientist | {{Infobox scientist | ||
| | honorific_prefix = | | honorific_prefix = | ||
| | name = |
| name = Janice Limson | ||
| | honorific_suffix = | | honorific_suffix = | ||
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| | birth_place = ] | | birth_place = ]{{R|Herald}}, South Africa | ||
| | death_place = | |||
| | death_date = {{death date and age |2010|02|04 |1949|10|03}}{{R|O'Connor}} | |||
| | |
| death_cause = | ||
| | death_cause = ]{{R|Warren 2010}} | |||
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| | nationality = | | nationality = | ||
| | fields = | | fields = | ||
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| | workplaces = ]</br>] at ]</br>]</br>] | |||
| | patrons = | | patrons = | ||
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| | alma_mater = ]</br>] | | alma_mater = ] | ||
| | thesis_title = |
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| | thesis_url = <!--(or | thesis1_url = and | thesis2_url = )--> | | thesis_url = <!--(or | thesis1_url = and | thesis2_url = )--> | ||
| | thesis_year = |
| thesis_year = <!--1997--> | ||
| | doctoral_advisor = ] | | doctoral_advisor = ]{{R|VCAward}}</br>Santy Daya{{R|VCAward}} | ||
| | academic_advisors = | | academic_advisors = | ||
| | doctoral_students = | | doctoral_students = | ||
| | notable_students = |
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| | signature = <!--(filename only)--> | | signature = <!--(filename only)--> | ||
| | signature_alt = | | signature_alt = | ||
| | website = | |||
| | website = {{URL|https://web.archive.org/web/20100613033959/http://www.math.colostate.edu/~rudolphd/| Former website}} | |||
| | footnotes = | | footnotes = | ||
| }} | }} | ||
| '''Janice Limson''' is a South African Professor of ], Chairperson the School of Biotechnology at ] and the South African Research Chairs Initiative (SARChI) Chair in Biotechnology Innovation & Engagement at Rhodes University. She is founder and editor-in-chief of the magazine ''Science in Africa''.{{R|Herald|Science in Africa}} | |||
| '''Daniel Jay Rudolph''' (1949, ] - 2010, ]) was a mathematician who was considered one of the world leaders in ] and ], which explore ways of finding order and structure within chaotic systems.{{R|Warren 2010|Boyle|PressReader}} Rudolph studied at CalTech and Stanford and taught post-graduate mathematics at Stanford University, the University of Maryland and Colorado State University. Rudolph jointly developed a theory of restricted orbit equivalence which unified several other theories into a single framework.{{R|Boyle}} He founded and directed an intense preparation cause for graduate studies in mathematics and began a ] for middle school children. Early in life he was a modern dancer. He died in 2010 from amyotrophic lateral sclerosis, a degenerative motor neuron disease. | |||
| ==Early life and education == | ==Early life and education == | ||
| Limson grew up in ], South Africa and moved to ] where she completed her BSc (Honours) in 1994 at Rhodes University. In 1997 she was awarded a PhD in Chemistry at Rhodes University. | |||
| Rudolph was born to William Franklin Rudolph (1922-2000) and Betty Johnalou Waldner (1921-2004) and was the middle of 3 sons, the others being Gregory and James. The family moved to ] when Daniel was very young. He attended ] where he was active in the Chemistry club, Physics club, Computer club and Flying club as well as being on the student council. Rudolph was a semi-finalist in the ].{{R|O'Connor|PressReader}} | |||
| He graduated from Fort Collins High School in 1968 and matriculated at the ].{{R|O'Connor}} Rudolph attended CalTech on a ],{{R|BOYLE WEISS 2012}} and planned to major in theoretical physics. He soon changed his mind and graduated with a bachelor's degree in Mathematics in 1972.{{R|O'Connor}} Before graduating he won Cal Tech’s ] for Undergraduate Mathematics Research.{{R|BOYLE WEISS 2012}} | |||
| == Career == | == Career == | ||
| Rudolph moved to ] in 1972 where revolutionary work was being done on ergodic theory.{{R|BOYLE WEISS 2012|Boyle}} He was awarded a ] in 1973{{R|O'Connor}} and he completed his ] under the supervision of ] in 1975, with the title ''"Non-Bernoulli Behavior of the Roots of K-automorphisms"''. Rudolph's work in ergodic theory focused on measure theory as opposed to the ] approach that dominated ergodic theory.{{R|BOYLE WEISS 2012}} | |||
| His description of ergodic theory:{{R||O'Connor}} | |||
| {{quote|"My area of study is measurable dynamics, what is usually called 'ergodic theory'. This is a central branch of dynamical systems with broad connections to smooth and low-dimensional dynamics, symbolic dynamics, topological dynamics, you name it, and to other branches of mathematics, functional analysis, geometry, combinatorics, number theory, you name it. The central assumption of dynamics is that one has a phase space and some group or semigroup of self-maps of that space that play the role of describing time evolution of the phase space."}} | |||
| From August 1975 to August 1976, Rudolph was a postdoctoral fellow at the ]. During this time he devised a solution to a problem in ergodic theory that had resisted solutions by ] and others, entitled "When are two-point extensions of Bernoulli shifts also Bernoulli shifts?". In so doing he devised the method of "nesting" which evolved into a powerful tool. He also began his studies into varieties of orbit equivalence.{{R|BOYLE WEISS 2012}} | |||
| ] | |||
| He became a fellow of the ] at ] from late 1976 to 1978 and was appointed assistant professor at Stanford University from 1978 to 1981.{{R|BOYLE WEISS 2012|PressReader}} He spent part of 1979 at the ] where he studied ]. While at Maryland he lived at "Ergodic House" along with Bruce Kitchens, ] and Laif Swanson and they were regularly visited by ] and Andres del Junco.{{R|BOYLE WEISS 2012}} | |||
| In 1981 Rudolph was appointed associate professor at the University of Maryland{{R|O'Connor}} and was awarded a ]. This is also where he became recognised as a world leader in ergodic theory. He was appointed professor of mathematics in 1985{{R|O'Connor}} and was at Maryland until to 2004, during which time he was chair of the graduate program and acting chair of the Department of Mathematics.{{R|BOYLE WEISS 2012}} | |||
| In collaboration with Janet Kammeyer and others, Rudolph developed a theory of restricted orbit equivalence which unified Ornstein’s Bernoulli theory, ], ], and other relations into a single framework.{{R|Boyle}} | |||
| Rudolph spent some time away from Maryland and was a Visiting Professor at several universities including: the ] in 1988; the Mathematics Institute of the ] and the ] in 1989; the ] in 1991; the ] in 1993; and the ] in 1993.{{R|O'Connor}} | |||
| Rudolph presented several lectures including at the International Congress of Mathematicians in ] in 2002 entitled ''"Applications of orbit equivalence to actions of discrete amenable groups."''{{R|O'Connor}} | |||
| Rudolph and his family moved to his old home-town Fort Collins in 2005 where he was appointed to the Albert C. Yates Endowed Chair in Mathematics at ].{{R|Boyle|BOYLE WEISS 2012|Warren 2010}} Here he was diagnosed with ], a degenerative motor neuron disease.{{R|BOYLE WEISS 2012|Warren 2010}} | |||
| Rudolph founded and directed the SPIRAL program at Maryland, which was an intensive six-week preparation for graduate studies in mathematical sciences. This program was acknowledged by the ] with an award for "Mathematics Programs That Make a Difference" in 2008.{{R|Boyle|Warren 2010|AMS2008}} | |||
| As the disease progressed some physical activities became impossible but he continued to teach and do some departmental work, including supervising PhD students. Rudolph began a ] for middle school girls with the assistance of a middle school teacher, Martha Cranor. This was later expanded to a summer Math Circles camp, for middle school girls and boys.{{R|Boyle|BOYLE WEISS 2012}} | |||
| Rudolph died February 4, 2010 from complications resulting from the ALS. The April 2012 volume of the journal ''Ergodic Theory and Dynamical Systems'' (Vol 32, Part 2) was dedicated to him. One of his last papers was a joint work with ] and ] in the journal ''Annals of Mathematics'' on the conjugacy equivalence relation of automorphisms.{{R|Boyle}} | |||
| == Selected publications == | == Selected publications == | ||
| Rudolph authored or co-authored more than 70 articles{{R|Warren 2010}} in the field of ergodic theory, including: | |||
| * {{cite journal | last=Rudolph | first=Daniel J. | title=Two nonisomorphicK-automorphisms with isomorphic squares | journal=Israel Journal of Mathematics | publisher=Springer Science and Business Media LLC | volume=23 | issue=3-4 | year=1976 | issn=0021-2172 | doi=10.1007/bf02761805 | pages=274–287}} | |||
| * {{cite journal | last=Rudolph | first=Daniel J. | last2=Schwarz | first2=Gideon | title=On attainingđ-đ | journal=Israel Journal of Mathematics | publisher=Springer Science and Business Media LLC | volume=24 | issue=3-4 | year=1976 | issn=0021-2172 | doi=10.1007/bf02834748 | pages=185–190}} | |||
| * {{cite journal | last=Rudolph | first=Daniel J. | last2=Schmidt | first2=Klaus | title=Almost block independence and bernoullicity of d-actions by automorphisms of compact abelian groups | journal=Inventiones Mathematicae | publisher=Springer Science and Business Media LLC | volume=120 | issue=1 | year=1995 | issn=0020-9910 | doi=10.1007/bf01241139 | pages=455–488}} | |||
| * {{cite journal | last=Rudolph | first=Daniel J. | title=Fully generic sequences and a multiple-term return-times theorem | journal=Inventiones Mathematicae | publisher=Springer Science and Business Media LLC | volume=131 | issue=1 | date=December 17, 1997 | issn=0020-9910 | doi=10.1007/s002220050202 | pages=199–228}} | |||
| * {{cite journal | last=Roychowdhury | first=Mrinal Kanti | last2=Rudolph | first2=Daniel J. | title=Any two irreducible Markov chains are finitarily orbit equivalent | journal=Israel Journal of Mathematics | publisher=Springer Science and Business Media LLC | volume=174 | issue=1 | year=2009 | issn=0021-2172 | doi=10.1007/s11856-009-0117-7 | pages=349–368}} | |||
| He also authored two books: | |||
| * {{cite book | last=Rudolph | first=D.J. | title=Fundamentals of measurable dynamics: ergodic theory on Lebesgue spaces | publisher=Clarendon Press | series=Oxford science publications | year=1990 | isbn=978-0-19-853572-0 | url=https://books.google.com/books?id=plDvAAAAMAAJ }} | |||
| * {{cite book | last=Kammeyer | first=J.W. | last2=Rudolph | first2=D.J.| title=Restricted Orbit Equivalence for Actions of Discrete Amenable Groups | publisher=Cambridge University Press | series=Cambridge Tracts in Mathematics | year=2002 | isbn=978-0-521-80795-1 | url=https://books.google.com/books?id=6fq6TcnaQRkC }} | |||
| == Personal Life == | == Personal Life == | ||
| Before he got married, Rudolph had taken dance classes at as a CalTech undergraduate and at Maryland modern dancing became a serious hobby for him,{{R|O'Connor}} after being inspired by dance innovator ]. In 1991, Mayes choreographed a duet "For Bill and Johnalou", dedicated to Rudolph's parents. In 1991 Rudolph married Michelle Hyde and they had three children, Beatrice, Jonah and Layton. "Rudolph was devoted to his children and evenings became a precious time to be spent with the children - no longer with friends or dance."{{R|O'Connor}} | |||
| In November 1981 Rudolph's older brother Gregory, Gregory's wife Kristin and their two children died in a plane crash. The plane had been piloted by Gregory and had crashed while attempting to land at ] Airport.{{R|O'Connor}} | |||
| Rudolph was considered dynamic, inspiring and generally positive. For a while he kept a sign in his Maryland office that read "Eat problems for breakfast".{{R|BOYLE WEISS 2012}} His academic papers were considered difficult to read but in-person he expressed ideas elegantly.{{R|BOYLE WEISS 2012}} His students remembered him as "demanding but very supportive".{{R|BOYLE WEISS 2012|Memorial Page}} | |||
| ==References== | ==References== | ||
| {{Reflist|refs= | {{Reflist|refs= | ||
| <ref name="Herald">{{cite web | title=Professor Janice Limson a force in biotechnology | website=PressReader.com | date=13 June 2015 | url=https://www.pressreader.com/south-africa/the-herald-south-africa/20150613/281792807653482 | access-date=25 June 2020}}</ref> | |||
| <ref name=" |
<ref name="Science in Africa">{{cite web | title=Science in Africa - About us | website=Science in Africa | url=http://www.scienceinafrica.com/about-us | access-date=25 June 2020}}</ref> | ||
| <ref name="Boyle">{{cite journal | last=Boyle | first=Mike | title=Daniel J. Rudolph (1949–2010) | journal=Notices of the American Mathematical Society | publisher=American Mathematical Society (AMS) | volume=60 | issue=09 | date=October 1, 2013 | issn=0002-9920 | doi=10.1090/noti1040 | page=1}}</ref> | |||
| <ref name="BOYLE WEISS 2012">{{cite journal | last=Boyle | first=Mike | last2=Weiss | first2=Benjamin | title=Remembering Dan Rudolph | journal=] | publisher=Cambridge University Press | volume=32 | issue=2 | date=February 7, 2012 | issn=0143-3857 | doi=10.1017/s014338571100112x | pages=319–322}}</ref> | |||
| <ref name="Memorial Page">{{cite web | last=Weston | first=Nathan | title=The Department of Mathematics at Colorado State University | website=math.colostate.edu | date=June 10, 2010 | url=http://www.math.colostate.edu/people/Dan%20Rudolph%20memorial%20page.shtml | archive-url=https://web.archive.org/web/20100610145454/http://www.math.colostate.edu/people/Dan%20Rudolph%20memorial%20page.shtml | archive-date=June 10, 2010 | url-status=unfit | access-date=June 1, 2020}}</ref> | |||
| <ref name="O'Connor">{{cite web |last1=O'Connor |first1=J.J. |last2=Robertson |first2=E.F. |title=Daniel Jay Rudolph |url=https://mathshistory.st-andrews.ac.uk/Biographies/Rudolph/ |website=MacTutor |accessdate=June 1, 2020 |date=October 2013}}</ref> | |||
| <ref name=" |
<ref name="VCAward">{{cite web |title=The Vice-Chancellor’s Distinguished Research Award: Professor Janice Limson |url=http://www.drivehq.com/file/df.aspx?isGallery=true&shareID=9927706&fileID=1037380322 |accessdate=25 June 2020}}</ref> | ||
| <ref name="Warren 2010">{{cite web | last=Warren | first=Adam | title=Today @ Colorado State University - Daniel J. Rudolph, professor of mathematics, died from ALS Feb. 4 | website=today.colostate.edu | date=27 July 2010 | url=http://www.today.colostate.edu/story.aspx?id=3139 | archive-url=https://web.archive.org/web/20100727190400/http://www.today.colostate.edu/story.aspx?id=3139 | archive-date=July 27, 2010 | url-status=dead | access-date=June 1, 2020}}</ref> | |||
| }} | }} | ||
| ==External links== | ==External links== | ||
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South African| Janice Limson | |
|---|---|
| Born | Port Elizabeth, South Africa |
| Alma mater | Rhodes University |
| Scientific career | |
| Doctoral advisor | Tebello Nyokong Santy Daya |
Janice Limson is a South African Professor of Biotechnology, Chairperson the School of Biotechnology at Rhodes University and the South African Research Chairs Initiative (SARChI) Chair in Biotechnology Innovation & Engagement at Rhodes University. She is founder and editor-in-chief of the magazine Science in Africa.
Early life and education
Limson grew up in Port Elizabeth, South Africa and moved to Grahamstown where she completed her BSc (Honours) in 1994 at Rhodes University. In 1997 she was awarded a PhD in Chemistry at Rhodes University.
Career
Selected publications
Personal Life
References
- ^ "The Vice-Chancellor's Distinguished Research Award: Professor Janice Limson". Retrieved 25 June 2020.
- ^ "Professor Janice Limson a force in biotechnology". PressReader.com. 13 June 2015. Retrieved 25 June 2020.
- "Science in Africa - About us". Science in Africa. Retrieved 25 June 2020.