The first extensive telegraph network was the visual telegraph. In 1791 the Frenchman Claude Chappe used a visual network (which consisted of a telescope, a clock, a codebook, and black and white panels) to send a message ten miles.
Page Content. The School Performance Profile provides the public with a comprehensive overview of student academic performance in every Pennsylvania public school building, including traditional public schools, charter schools, cyber charter schools and career and technology centers.
Below is a breakdown of the results of the poll and commentary on the topic of employee refusal of warnings or performance reviews, including common law requirements and policy considerations. A performance review is the employer's mechanism to monitor the employee's performance and provide positive feedback.