Results 111 to 120 of about 936 (209)

Smarandache semirings, semifields, and semivector spaces [PDF]

open access: yes, 2002
Smarandache notions, which can be undoubtedly characterized as interesting mathematics, has the capacity of being utilized to analyse, study and introduce, naturally, the concepts of several structures by means of extension or identification as a ...
Vasantha, Kandasamy
core   +1 more source

Some new classes of finite parallelisms [PDF]

open access: yes, 2001
Some new constructions of parallelisms in $PG(3,q)$ are given that produce parallelisms consisting of one Desarguesian spread and $q^{2}+q$ derived Knuth semifield spreads and other types consisting of one Knuth semifield spread, one Hall spread and the ...
Johnson, Norman L.
core   +2 more sources

A geometric construction of finite semifields [PDF]

open access: yes, 2007
. We give a geometric construction of a finite semifield from a certain configuration of two subspaces with respect to a Desarguesian spread in a finite dimensional vector space over a finite field, and prove that any finite semifield can be obtained in ...
EBERT G   +7 more
core   +1 more source

On Collineation Subgroup of Semifield Plane That Isomorphic to A4 [PDF]

open access: yes, 2011
Доказано, что трансляционное дополнение полуполевой плоскости ранга 2 над конечным полем нечетного порядка не содержит подгруппы коллинеаций, изоморфной знакопеременной группе A4.It is proved that the translation complement of any semifield plane of ...
Прамзина, Виктория О.   +3 more
core  

Study on daily and reproduction activity of melon weevil, Acythopeus curvirostris persicus (Col.: Curculionidae), in Birjand, Iran [PDF]

open access: yesنامه انجمن حشره‌شناسی ایران, 2013
Melon weevil, Acytopeus curvirostris persicus Thompson, is one of the most important pests of melons that is spread in the Middle East countries. In this study, diurnal and seasonal locomotor and flight activity of melon weevil were investigated under ...
K. Mohammadpour   +3 more
doaj  

A generalization of some Huang-Johnson semifields

open access: yesElectron. J. Comb., 2011
The seven Huang-Johnson semifields are semifields of order 64 with left nucleus of order 8 and center of order 2, which will be referred as the Huang-Johnson semifields of type II, III, IV, V, VI, VII, and VIII. The authors have investigated the question whether these sporadic examples are contained in larger families. They prove that the Huang-Johnson
JOHNSON N. L   +3 more
openaire   +5 more sources

Symplectic semifields spreads of $PG(5,q)$ and the veronese surface [PDF]

open access: yes, 2011
In this paper we show that starting from a symplectic semifield spread S of PG(5, q), q odd, another symplectic semifield spread of PG(5, q) can be obtained, called the symplectic dual of S, and we prove that the symplectic dual of a Desarguesian spread ...
LUNARDON, GUGLIELMO   +7 more
core   +1 more source

Male mating competitiveness of a Wolbachia-introgressed Aedes polynesiensis strain under semi-field conditions.

open access: yesPLoS Neglected Tropical Diseases, 2011
BackgroundLymphatic filariasis (LF), a global public health problem affecting approximately 120 million people worldwide, is a leading cause of disability in the developing world including the South Pacific.
Eric W Chambers   +4 more
doaj   +1 more source

Recovery in environmental risk assessments at EFSA

open access: yesEFSA Journal, 2016
EFSA performs environmental risk assessments (ERAs) for single potential stressors such as plant protection products, genetically modified organisms and feed additives and for invasive alien species that are harmful for plant health.
EFSA Scientific Committee
doaj   +1 more source

Bumble bee queen production in semi-field studies: assessment of endpoints and challenges

open access: yesJulius-Kühn-Archiv, 2018
Bumble bees (Bombus terrestris L; Hymenoptera, Apidae) provide important pollination services and are commercially used, e.g. in greenhouse cultures. Consequently, the impacts of pesticides on bumble bees were already tested in the past.
Franke, L.   +4 more
doaj   +1 more source

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