Testing as a general trait of social life has received a great deal of attention by many language teachers and scholars. Throughout history, people have been tested to prove their abilities and experiences or to confirm their capacities. Many authorities have said that assessment and instruction should be integrated as a single and inseparable activity which seeks to understand development by a...

Nonlinear Knapsack Problems (NKP) are the alternative formulation for the multiple-choice knapsack problems. A powerful approach for solving NKP is dynamic programming which may obtain the global op-timal solution even in the case of discrete solution space for these problems. Despite the power of this solu-tion approach, it computationally performs very slowly when the solution space of the pr...