Abstract: A lighting device fixing structure and a shelf lighting fixing structure are provided. The fixing structure of the lighting apparatus has a first fastener unit wrapping a surface of a shelf, a second fastener unit wrapping the surface of the shelf, wherein one of the first fastener unit and the second fastener unit is fixed to a light body, the first fastener unit and the second fastener unit are connected in a rotatable manner. The fixing structure of the lighting apparatus also has a fastener unit for locking the first fastener unit and the second fastener unit to each other, wherein the first fastener unit and the second fastener unit wrap and fix to a shelf.

Abstract: A lighting device fixing structure and a shelf lighting fixing structure are provided. The fixing structure of the lighting apparatus has a first fastener unit wrapping a surface of a shelf, a second fastener unit wrapping the surface of the shelf, wherein one of the first fastener unit and the second fastener unit is fixed to a light body, the first fastener unit and the second fastener unit are connected in a rotatable manner. The fixing structure of the lighting apparatus also has a fastener unit for locking the first fastener unit and the second fastener unit to each other, wherein the first fastener unit and the second fastener unit wrap and fix to a shelf.

Abstract: Systems, methods, and media for placing orders to trade a security are provided. In some embodiments, for example, methods comprise: receiving an order to trade a security; determining an execution rate for the order, determining a darkness threshold for the order; selecting one or more routes for one or more working orders of the order based on at least the darkness threshold; scoring the one or more routes; allocating size to the one or more working orders based on the scoring and the execution rate; creating the one or more working orders; and sending the one or more working orders to the one or more routes for execution.