A Day with Yayah by N. Campbell

Portfolio Selection with Higher Moments By Campbell

We propose a method for optimal portfolio selection using a Bayesian decision theoretic framework that addresses two major shortcomings of the Markowitz approach: the ability to handle higher moments and estimation error. We employ the skew normal distribution which has many attractive features for modeling multivariate returns. Our results suggest that it is important to incorporate higher ord...

Baker-Campbell-Hausdorff relation for special unitary groups SU(N)

Multiplication of two elements of the special unitary group SU(N) determines uniquely a third group element. A Baker-Campbell-Hausdorff relation is derived which expresses the group parameters of the product (written as an exponential) in terms of the parameters of the exponential factors. This requires the eigenvalues of three (N ×N) matrices. Consequently, the relation can be stated analytica...

Dr. A. M. G. Campbell

‏‎a comparative study of language learning strategies employmed by bilinguals and monolinguals with reference to attitudes and motivation‎‏

هدف از این تحقیق بررسی برخی عوامل ادراکی واحساسی یعنی استفاده از شیوه های یادگیری زبان ، انگیزه ها ونگرش نسبت به زبان انگلیسی در رابطه با زمینه زبانی زبان آموزان می باشد. هدف بررسی این نکته بود که آیا اختلافی چشمگیر میان زبان آموزان دو زبانه و تک زبانه در میزان استفاده از شیوه های یادگیری زبان ، انگیزه ها نگرش و سطح مهارت زبانی وجود دارد. همچنین سعی شد تا بهترین و موثرترین عوامل پیش بینی کننده ...

Robert Campbell in Queen Street, 1897-1920. Day surgery in the Belfast Hospital for Sick Children.

In a manuscript found among the papers of Robert Campbell by the late William S Campbell we find the words, "1898 I joined the staff of the Belfast Hospital for Sick Children". This is an error, for it was on 22 September 1897 that Robert Campbell was appointed honorary assistant surgeon on the occasion of the promotion of J S Morrow to be an honorary attending surgeon. This appearance of "John...