One way of monitoring physical activity intensity is to determine whether a person's pulse or heart rate is within the target zone during physical activity. For moderate-intensity physical activity, a person's target heart rate should be 50 to 70% of his or her maximum heart rate.This maximum rate is based on the person's age.An estimate of a person's maximum age-related heart rate can be obtained by subtracting the person's age from 220. For example, for a 50-year-old person, the estimated maximum age-related heart rate would be calculated as 220 - 50 years = 170 beats per minute (bpm).his maximum rate is based on the person's age. An estimate of a person's maximum age-related heart rate can be obtained by subtracting the person's age from 220. For example, for a 50-year-old person, the estimated maximum age-related heart rate would be calculated as 220 - 50 years = 170 beats per minute (bpm).
MongoDB - Sharding. Sharding is the process of storing data records across multiple machines and it is MongoDB's approach to meeting the demands of data growth. As the size of the data increases, a single machine may not be sufficient to store the data nor provide an acceptable read and write throughput. Sharding solves the problem with horizontal scaling. With sharding, you add more machines to support data growth and the demands of read and write operations. Why Sharding?
Year â 2012. March â The Steel structure of the Shard reaches its full height when the 500 tonne spire is winched into place. A âtest runâ of the spire construction is carried out in a field in Yorkshire before being attached to the building itself. The cladding process is complete and building is externally finished. June â The Shard is formally inaugurated by the Prime Minister of Quatar. The inauguration features a laser show, with 12 lasers and 30 search lights lighting up the London Sky. Each laser pointed to a different London landmark. November â The building is practically completed. Year â 2013. January â The View from The Shard public viewing platform opens, allowing people to visit the highest inhabitable floors of the building and enjoy the highest observation point in Western Europe. Click here to for more information on the Shardâs viewing platform