Natural-based composites are gaining popularity among composite makers and end users because of their biocompatibility, low cost, and abundance. The influence of Glycerin as a plasticizer in various percentages ranging from 3% to 12% on Tensile, Flexural, Impact, Inter-laminar Shear Strength (ILSS), and Hardness characteristics of a Kenaf-Jute hybrid polyester composite, which is fabricated using hand layup followed by the hot press method, was investigated in the present study. It was observed that a 6% Glycerin concentration in polyester Kenaf-Jute composite outperformed other composites in Tensile, Flexural, and Impact strengths in the range of 2 to 73%. This is evident by analyzing SEM images that better physical bonding between the Kenaf-Jute fibers with modified polyester resin using Glycerin. As the Glycerin content in the composite increases, the Hardness decreases when compared to without modified polyester.

Although there are many thinkers of training and its important role in improving firm performance, it has been criticized as a trend, or too costly and not transmitting the contents to the job. In fact, some studies have failed to find the impacts of training on firm performance. This paper intends to advance understanding of the effects of training on firm performance by reviewing theory and previous empirical studies on the relationship between training and firm performance. The paper aims to describe the important theoretical approaches and proposes a framework for analyzing training and firm performance concerns. Data from previous studies are used to review the effects of training on firm performance. The paper discusses and identifies the limitations of previous studies and directions for future research on this topic.