Insecticide resistance in the malaria vector Anopheles arabiensis in Mamfene, KwaZulu-Natal

Autor: Basil D. Brook, Leanne Robertson, Maria L. Kaiser, Eric Raswiswi, Givemore Munhenga, Nelius Venter, Oliver R. Wood, Lizette L. Koekemoer

Publikováno v: South African Journal of Science, Vol 111, Iss 11/12, Pp 3-3 (2015)

The control of malaria vector mosquitoes in South Africa’s affected provinces is primarily based on indoor spraying of long-lasting residual insecticides. The primary vectors in South Africa are Anopheles arabiensis and An. funestus. South Africa�

Externí odkaz: https://doaj.org/article/7fd9d922a23a48c0a8712877d9471bf5

MONOGENEITY IN CYCLOTOMIC FIELDS

Autor: Leanne Robertson

Publikováno v: International Journal of Number Theory. :1589-1607

A number field is said to be monogenic if its ring of integers is a simple ring extension ℤ[α] of ℤ. It is a classical and usually difficult problem to determine whether a given number field is monogenic and, if it is, to find all numbers α tha

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::933f84cd7240804527b5bd9c4150ff2b
https://doi.org/10.1142/s1793042110003666

Potential entrepreneurs' assessment of opportunities through the rendering of a business plan

Autor: Claire Leanne Robertson, Melodi Botha

Publikováno v: South African Journal of Economic and Management Sciences, Volume: 17, Issue: 3, Pages: 249-265, Published: JUL 2014
South African Journal of Economic and Management Sciences, Vol 17, Iss 3, Pp 249-265 (2014)

In the field of entrepreneurship and especially during start up, much emphasis is placed on the business plan with regard to entrepreneurship education and training, funding from external investors, business plan competitions and government developme

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0716023010dedcbec70181b090b0e08a
http://www.scielo.org.za/scielo.php?script=sci_arttext&pid=S2222-34362014000300002&lng=en&tlng=en

Power integral bases in prime-power cyclotomic fields

Autor: István Gaál, Leanne Robertson

Let p be an odd prime and q=pm, where m is a positive integer. Let ζ be a primitive qth root of unity, and Oq be the ring of integers in the cyclotomic field Q(ζ). We prove that if Oq=Z[α] and gcd(hq+,p(p−1)/2)=1, where hq+ is the class number o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::084b3cfb60dfb1f52854dc38e988f040