Background and Purpose: The role of collocation learning strategies is less of a concern as mediator. Although several correlation studies of bivariate factors have provided the relationship between the variables, many cannot answer the question of how the relationship exists. Also, a lot of studies have taken into account the variables of collocation learning strategies as mediator factors and have not illustrated clearly the relationship between independent variables (motivation) and dependent variables (collocation knowledge). As such, the aim of the present study is to identify the knowledge of Arabic collocation by taking several factors, namely; motivation and collocation learning strategies that have the potential to increase the knowledge of Arabic collocation in Malaysia. Methodology: In this study, a cross-sectional design was applied. Simple random sampling was used, where a total of 344 final year Arabic language students from eight public universities in Malaysia took part in the study by completing a set of tests and questionnaires. The data were analyzed using the Partial Least Squares Structural Equation Modeling (PLS-SEM) technique. Findings: The findings show there is a direct and indirect relationship between motivation variable, collocation learning strategies and collocation knowledge. In addition, the learning strategies factor also serves as a partial mediator. Contributions: This study suggests that collocation learning strategies play a role in the relationship between motivation and collocation knowledge in the context of Arabic language at higher education level in Malaysia.

A random laser is an optical device that depends on multiple light scattering and gain to provide the feedback mechanism and light amplification respectively. A random laser is different with a regular laser where the regular laser needs a cavity for the feedback mechanism. Multiple light scattering can be considered detrimental in the regular laser but in the random laser, multiple light scattering can increase the path length of light in the active medium. This article studies the operation principles and characteristics of random lasers including the history and applications of the lasers. The theories of light scattering and light amplification are properly explained, followed by a discussion on characteristics of random lasers in terms of random laser emission, emission linewidth and coherence. Furthermore, the unique characteristics of random lasers can contribute to many applications leading to promising element for the future medical and biosensing development.