This paper deals with the existence issue of non-central Wishart distributions which is a research topic initiated by Wishart (1928), and with important contributions by e.g., Lévy (1937), Gindikin (1975), Shanbhag (1988), Peddada & Richards (1991). We present a new method involving the theory of affine Markov processes, which reveals joint necessary conditions on shape and non-centrality param...

Engelmann spruce (Picea engelmannii Parry ex Engelm.) is a high-elevation species found in western Canada and western USA. As this species becomes increasingly targeted for harvesting, better height growth information is required for good management of this species. This project was initiated to fill this need. The objective of the project was threefold: develop a site index model for Engelmann...

Professionalism has been generally linked to nations’ economic, industrial, and technological developments. Therefore, having a professionally and ethically competent workforce is a necessity in today's changing world. More specifically, L2 teacher professionalism plays a crucial role in economic development too.  Given its utmost importance in language teaching, this study intended to investig...

The Archiborborinae comprise a diverse clade of flies in the family Sphaeroceridae. We here revise the generic classification, redefining the genus Antrops Enderlein and naming 5 new genera: Boreantrops gen. nov., Coloantrops gen. nov., Maculantrops gen. nov., Photoantrops gen. nov., and Poecilantrops gen. nov. The genus Archiborborus, until recently a paraphyletic assemblage including most of ...

this study compared the use of five different models to describe the growth from birth to 20 weeks of age of kids from both genders of nondescript goats. fifty nine (59) nondescript kids were weighed weekly at the university of maiduguri livestock teaching and research farm, nigeria and the live weights were modeled. biologically relevant variables were estimated for each kid from the logistic,...

the logistic, gompertz, richards and asymmetric logistic growth curve models were fitted to body weight data of local ghanaian chickens and french sasso t44 chickens. all four growth models provided good fit for each sex by genotype growth data with r2 values ranging from 86.7% to 96.7%. the rate constant parameter, k, ranged between 0.137 and 0.271 and were significantly different from zero fo...