The Weeknd

Abęl Makkonen Tesfaye (born 16 February 1990), known professionally by his stage name The Weeknd (pronounced "the weekend"), is a Canadian singer, songwriter and record producer. In late 2010, Tesfaye anonymously uploaded several songs to YouTube under the name "The Weeknd". He released three nine-track mixtapes throughout 2011: House of Balloons, Thursday and Echoes of Silence, which were critically acclaimed. The following year, he released a compilation album Trilogy, thirty tracks consisting of remastered versions of the mixtape material and three additional songs. It was released under Republic Records and his own label XO.

In 2013, he released his debut studio album Kiss Land, which was supported by the singles "Kiss Land" and "Live For". His second album, Beauty Behind the Madness, which became his first number one album on the Billboard 200, included the top-five single "Earned It" and produced the number-one singles "The Hills" and "Can't Feel My Face". The songs have simultaneously held the top three spots on the Billboard Hot R&B Songs chart, making him the first artist in history to achieve this.

False alarm

A false alarm, also called a nuisance alarm, is the deceptive or erroneous report of an emergency, causing unnecessary panic and/or bringing resources (such as emergency services) to a place where they are not needed. False alarms may occur with residential burglary alarms, smoke detectors, industrial alarms, and in signal detection theory. False alarms have the potential to divert emergency responders away from legitimate emergencies, which could ultimately lead to loss of life. In some cases, repeated false alarms in a certain area may cause occupants to develop alarm fatigue and to start ignoring most alarms, knowing that each time it will probably be false.

Overview

The term “false alarm” refers to alarm systems in many different applications being triggered by something other than the expected trigger-event. Examples of this those applications include residential burglar alarms, smoke detectors, industrial alarms, and signal detection theory.

The term “false alarm” may actually be semantically incorrect in some uses. For example, a residential burglar alarm could easily be triggered by the residents of a home accidentally. The alarm is not necessarily false – it was triggered by the expected event – but it is “false” in the sense that the police should not be alerted. Due to this problem, false alarms can also be referred to as “nuisance alarms.”

3D printing

3D printing, also known as additive manufacturing (AM), refers to various processes used to synthesize a three-dimensional object. In 3D printing, successive layers of material are formed under computer control to create an object. These objects can be of almost any shape or geometry and are produced from a 3D model or other electronic data source. A 3D printer is a type of industrial robot.

Futurologists such as Jeremy Rifkin believe that 3D printing signals the beginning of a third industrial revolution, succeeding the production line assembly that dominated manufacturing starting in the late 19th century. Using the power of the Internet, it may eventually be possible to send a blueprint of any product to any place in the world to be replicated by a 3D printer with "elemental inks" capable of being combined into any material substance of any desired form.

3D printing in the term's original sense refers to processes that sequentially deposit material onto a powder bed with inkjet printer heads. More recently, the meaning of the term has expanded to encompass a wider variety of techniques such as extrusion and sintering-based processes. Technical standards generally use the term additive manufacturing for this broader sense.