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Alpha–beta pruning is a search algorithm that seeks to decrease the number of nodes that are evaluated by the minimax algorithm in its search tree. It is an adversarial search algorithm used commonly for machine playing of two-player combinatorial games ( Tic-tac-toe , Chess , Connect 4 , etc.).
A hedge trimmer, shrub trimmer, or bush trimmer [1] [2] is a gardening tool or machine used for trimming (cutting, pruning) hedges or solitary shrubs (bushes). Different designs as well as manual and powered versions of hedge trimmers exist. Hedge trimmers vary between small hand-held devices to larger trimmers mounted on tractors.
Spiraea douglasii is a woolly shrub growing 0.91–1.83 metres (3–6 feet) tall from rhizomes, forming dense riverside thickets. [6]The leaves are 2.5–10.2 centimetres (1–4 inches) long and toothed towards the tips.
In France and Italy it is widely used for pruning grape vines. The billhook is the European equivalent of tools such as machetes, parangs, and kukris. Prior to the advent of chainsaws, billhooks were used to clear brush and undergrowth from around the base of a tree that was to be felled by either axe or crosscut saw.
English: Six slow-motion videos of the same double pendulum (built with Lego), recorded with a high-speed camera. For each recording, the double pendulum was excited in the same manner. The videos are temporally aligned to show that the behaviour is similar in the beginning and considerably different later – which is due to the butterfly effect.
Scoop and Doozie was a late 1990s Children's television series about the everyday lives of Doozie, an orange toy bulldozer, Scoop, a yellow toy excavator, and Axel, a blue and red dumptruck, aimed at preschoolers and kindergarteners. It used skillful puppetry and live videos to teach about construction and machinery to children.
It is a deciduous or semi-evergreen shrub that reaches a size of 1–2 m height, with many thin branches, arched, flexible and glabrous.The leaves are alternate, simple, small petiolate, with 2–6 cm long green lanceolate, elliptical-rhomboidal or slightly obovate lamina, with 3 nerves parallel from its base, irregularly crenate-dentate in its distal half.
The main distinction among loppers is between bypass and anvil types. Bypass loppers operate like scissors, except that they generally only have one blade that moves past a jaw or hook that has an approximately square edge that is not typically sharpened and is usually concave or hook shaped in order keep branches from slipping out of the jaws.