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pro vyhledávání: '"David Acheson"'
Autor:
David Acheson
Calculus is the key to much of modern science and engineering. It is the mathematical method for the analysis of things that change, and since in the natural world we are surrounded by change, the development of calculus was a huge breakthrough in th
Autor:
David Acheson
How can we be sure that Pythagoras's theorem is really true? Why is the'angle in a semicircle'always 90 degrees? And how can tangents help determine the speed of a bullet? David Acheson takes the reader on a highly illustrated tour through the histor
Autor:
David Acheson
Publikováno v:
The Mathematical Gazette. 95:385-394
Mathematics is full of wonder and surprise, and I had my first big mathematical surprise at the age of 10, in 1956.I was keen on conjuring at the time, and came across the following ‘mind-reading’ trick un a book.Write down a 3-figure number.Any
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1fe44155e07c072f312df18d30770da7
https://doi.org/10.1017/s0025557200003454
https://doi.org/10.1017/s0025557200003454
Food Borne Illness is a common, costly, yet preventable public health problem. This issue of the Infectious Disease Clinics covers the most common food borne pathogens, along with articles that include indentifying, diagnosing, and treating food born
Autor:
J. Glenn Morris, David Acheson
Publikováno v:
Clinical Infectious Diseases. 37:272-280
Vibrios are ubiquitous in the aquatic environment and are commonly present in or on shellfish and other seafood. A small subset of strains/species are able to cause human disease, including the cholera toxin-producing strains of Vibrio cholerae that
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b6791dbcb0c3883c607594c5b2686b60
https://doi.org/10.1086/375600
https://doi.org/10.1086/375600
Publikováno v:
Clinical Infectious Diseases. 36:903-908
Cryptosporidium species are protozoan parasites that cause mainly enteric illnesses in humans and other animals. The mode of transmission is most commonly waterborne, but other sources of infection, including foodborne and person-to-person spread, ha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::db2e5861e8394a65efe9696f8c42b871
https://doi.org/10.1086/368194
https://doi.org/10.1086/368194
Publikováno v:
Proceedings of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences. 459:539-546
A seemingly paradoxical experiment is described whereby a length of wire is stabilized upside down by vertical periodic oscillation of its support. The experimental results reveal an upper and a lower bound on the excitation frequency for stability.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e9962a9ffebccf7376dd2634c8373b0c
https://doi.org/10.1098/rspa.2002.1056
https://doi.org/10.1098/rspa.2002.1056
Autor:
Walter F. Schlech, David Acheson
Publikováno v:
Clinical Infectious Diseases. 31:770-775
Listeria monocytogenes emerged as an important foodborne pathogen in the latter part of the 20th century. Clinical syndromes caused by this microorganism include sepsis in the immunocompromised patient, meningoencephalitis in infants and adults, and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bcf8c37842f8e6b247d6dbfc586e65a5
https://doi.org/10.1086/314008
https://doi.org/10.1086/314008
Publikováno v:
Proceedings of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences. 452:1369-1395
We investigate the novel set of nonlinear ordinary differential equations x = x (y —1) — βz , y = α(1 — x 2 )— ky and z = x-λz, where x=dx/dτ, etc. They govern the behaviour of two (mathematically equivalent) self-exciting homopolar dynam
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d5046248fe52fbc825a44e173dd6a267
https://doi.org/10.1098/rspa.1996.0070
https://doi.org/10.1098/rspa.1996.0070
Autor:
David Acheson
Publikováno v:
Proceedings of the Royal Society of London. Series A: Mathematical and Physical Sciences. 448:89-95
It has long been known that a simple rigid pendulum can be stabilized against small disturbances in its upside-down state by rapid vertical oscillations of its pivot. Over part of the parameter range for which this happens we find that there is a sec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2643aa1fe09d182164191b6dc676becb
https://doi.org/10.1098/rspa.1995.0005
https://doi.org/10.1098/rspa.1995.0005