Writing assessments are an indispensable part of most language competency tests.In our research, we used cross-classified models to study rater effects in the real essay rating process of a large-scale, high-stakes educational examination administered in China in Parchment Paper 2011.Generally, four cross-classified models are suggested for investi
A new type of rigid-flexible coupling three degrees of freedom (3-DOF) micro-positioning platform with high positioning accuracy and Mirror high bearing capacity is developed, which consists of flexible drive mechanism and rigid platform.The flexible drive mechanism consists of three sets of symmetrical parallel round flexible hinge structures, eac
In late years, from the viewpoints of drying up of fossil fuels such as oil or coal, and prevention of global warming, the renewable energy such as solar Vitamin B-6 power generation or wind power generation attracts attention.The wind power generation can generate electricity with relatively low cost in renewable energy.A highly efficient propelle