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**public sources and our publisher partners.**Considering Canada's Tri-Council statement on the ethical conduct for research involving human subjects, we discuss some of the ethical challenges of doing research on teaching and learning in which… Continue Reading

We consider a bipartite distance-regular graph @C with diameter D>=4 and valency k>=3. Let X denote the vertex set of @C and fix x@?X. Let @C"2^2 denote the graph with vertex set… Continue Reading

AbstractAcceptance of metal matrix composites for industrial applications depends upon improving properties using an economic production route, which includes the processing design. Two powder… Continue Reading

Abstract Let Γ denote a bipartite distance-regular graph with diameter D ⩾4 and valency k ⩾3. Let θ , θ ′ denote eigenvalues of Γ other than k and − k . We obtain an inequality involving θ , θ ′ and… Continue Reading

Let Y denote a D-class symmetric association scheme with D>=3, and suppose Y is almost-bipartite P- and Q-polynomial. Let x denote a vertex of Y and let T=T(x) denote the corresponding Terwilliger… Continue Reading

AbstractLet Γ denote a bipartite distance-regular graph with diameter D ≥ 4, valency k ≥ 3, and distinct eigenvalues θ0 > θ1 > ··· > θD. Let M denote the Bose-Mesner algebra of Γ. For 0 ≤ i ≤ D, let… Continue Reading

We report findings from a classroom experiment in which each of two sections of the same Calculus 1 course at a North American research-focused university were subject to an “intervention” week, each… Continue Reading

Abstract The hot deformation behaviour of a 20 vol.-%SiC particle reinforced Al alloy 6061 composite and Al alloy 6061, made via a powder metallurgy (PM) route and treated by a T4 temper, were… Continue Reading

We consider a bipartite distance-regular graph @C with diameter D>=4, valency k>=3, intersection numbers b"i,c"i, distance matrices A"i, and eigenvalues @q"0>@q"1>...>@q"D. Let X denote the vertex… Continue Reading

Let Γ denote a bipartite distance-regular graph with diameter D≥4, valency k≥3, and Bose-Mesner algebra M. Let θ0 > θ1 > ... >θD denote the distinct eigenvalues for Γ, and for 0 ≤ i ≤ D, let Ei… Continue Reading