Arthur Jensen argues that the failure of recent compensatory education efforts to produce lasting effects on children’s I Q and achievement suggests that the premises on which these efforts have been based should be reexamined. H e begins by questioning a central notion upon which these and other edu­ cational programs have recently been based: that IQ differences are almost en­ tirely a result...

This paper aims to present the well-known spectral mapping theorem for multi-variable functions.

Gold, P. E. (1986) Behav. Neural Biol. 46,87-98 Jensen, L. H., Petersen, E. N., Braestrup, C., Honore, T., Kehr, W., Stephens, D. N., Seidelmann, D. & Schmiechen, R. (1984) I-’sycliopharmricologyo~ 83,2492 5 6 Jensen, L. H., Stephens, D. N., Sarter, M. & Petersen, E. N. ( 1 987) Bruin. Res. Bull. 19, 359-364 Petkow, V., Georgier, V., Getova, D. & Petkov, V. (1983) Acfu I’hysiol. I’harmacol. Bul...

The aim of this paper is to give sufficient conditions for a quasiconvex setvalued mapping to be convex. In particular, we recover several known characterizations of convex real-valued functions, given in terms of quasiconvexity and Jensen-type convexity by K. Nikodem [1], F.A. Behringer [2], and X.M. Yang, K.L. Teo and X.Q. Yang [3].

We introduce the normalized Jensen-Mercer functional Mn( f ,x, p) = f (a)+ f (b)− n ∑ i=1 pi f (xi)− f ( a+b− n ∑ i=1 pixi ) and establish the inequalities of type MMn( f ,x,q) Mn( f ,x, p) mMn( f ,x,q) , where f is a convex function, x = (x1, . . . ,xn) and m and M are real numbers satisfying certain conditions. We prove them for the case when p and q are nonnegative n -tuples and when p and q...

S Yende, G W Waterer, E A Tolley, A B Newman, D C Bauer, D R Taaffe, R Jensen, R Crapo, S Rubin, M Nevitt, E M Simonsick, S Satterfield, T Harris, S B Kritchevsky . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

‎The aim of this paper is to introduce and solve the‎ radical cubic functional equation‎ ‎$‎‎fleft(sqrt[3]{x^{3}+y^{3}}right)+fleft(sqrt[3]{x^{3}-y^{3}}right)=2f(x)‎$.‎ ‎We also investigate some stability and hyperstability results for‎ ‎the considered equation in 2-Banach spaces‎.

(NO2−) is a potential contaminant in aquatic environments that receive nitrogenous waste and in recirculated aquaculture systems. Several studies have examined the toxicity and physiological effects of NO2− in fish (for reviews, see Lewis and Morris, 1986; Eddy and Williams, 1987; Jensen, 1995, 1996). Most investigations have concerned freshwater teleosts, because NO2− is generally more toxic t...