Numerical control

Numerical control (NC) is the automation of machine tools that are operated by precisely programmed commands encoded on a storage medium, as opposed to controlled manually by hand wheels or levers, or mechanically automated by cams alone. Most NC today is computer (or computerized) numerical control (CNC), in which computers play an integral part of the control.

In modern CNC systems, end-to-end component design is highly automated using computer-aided design (CAD) and computer-aided manufacturing (CAM) programs. The programs produce a computer file that is interpreted to extract the commands needed to operate a particular machine by a post processor, and then loaded into the CNC machines for production. Since any particular component might require the use of a number of different tools – drills, saws, etc., modern machines often combine multiple tools into a single "cell". In other installations, a number of different machines are used with an external controller and human or robotic operators that move the component from machine to machine. In either case, the series of steps needed to produce any part is highly automated and produces a part that closely matches the original CAD design.

2017

2017 (MMXVII) will be a common year starting on Sunday (dominical letter A) of the Gregorian calendar, the 2017th year of the Common Era (CE) and Anno Domini (AD) designations, the 17th year of the 3rd millennium, the 17th year of the 21st century, and the 8th year of the 2010s decade.

Predicted and scheduled events

January

August

September

Pradal serey

Pradal Serey (Khmer: ប្រដាល់សេរី) or Kun Khmer (Khmer: គុណខ្មែរ) is an unarmed martial art and combat sport from Cambodia. In Khmer, pradal means fighting or boxing and serey means free. Thus, pradal serey may be translated as "free fighting". The sport consists of stand up striking and clinch fighting where the objective is to knock an opponent out, force a technical knockout, or win a match by points.

Pradal Serey is most well known for its kicking technique, which generates power from hip rotation rather than snapping the leg, Pradal Serey consists of four types of strikes: punches, kicks, elbows and knee strikes. The clinch is used to wear down the opponent. In the clinch, opponents battle for dominant position for short range strikes by way of elbows and knees. Scholars believe that all South East Asian Indochinese kickboxing styles originate from what is thought to be the Indianized kingdom of Funan just prior to the creation of the Khmer Empire; consequentially Kun Khmer, Muay Thai、Muay Lao、Lethwei and Tomoi all share similar stances and techniques. Cambodian fighters tend to utilize more elbow strikes than that of other martial arts in the region. In pradal serey, more victories come by way of an elbow technique than any other strikes.