ELECTROELSA is a manufacturer of mast climbing work platforms , transport platforms , material hoists and construction hoists . The company began in 1982, with the design and construction of civil and industrial installations. ELECTROELSA soon entered the hoist-manufacturing sector as a supplier of control panels for the manufacturers of lifting machines . In 1995, the company opened a machine manufacturing division and dedicated themselves to the production of complete rack and pinion lifting systems . It quickly became one of the most prestigious manufacturers in the industry.
Miami-Dade County Public Schools is the fourth largest school district in the United States, comprised of 392 schools, 345,000 students and over 40,000 employees. Located at the southern end of the Florida peninsula, the school district stretches over 2,000 square miles of diverse and vibrant communities ranging from rural and suburban to urban cities and municipalities. A truly global community, district students speak 56 different languages and represent 160 countries.
Superintendent Alberto M. Carvalho has led the school district since the fall of 2008. During his tenure, the district has received state and national recognition for unprecedented increases in student achievement and graduation rates.
Modern masts form the leading edge of a sail's airfoil and tend to have a teardrop-shaped cross-section. On smaller racing yachts and catamarans, the mast rotates to the optimum angle for the sail's airfoil. If the mast has a long, thin cross-section and makes up a significant area of the airfoil, it is called a wing-mast; boats using these have a smaller sail area to compensate for the larger mast area. There are many manufacturers of modern masts for sailing yachts of all sizes, a few notable companies are Hall Spars, Offshore Spars , and Southern Spars.