Alarm device

An alarm device or system of alarm devices gives an audible, visual or other form of alarm signal about a problem or condition. Alarm devices are often outfitted with a siren.

Alarm devices include:

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.”

Goto

Goto (goto, GOTO, GO TO or other case combinations, depending on the programming language) is a statement found in many computer programming languages. It performs a one-way transfer of control to another line of code; in contrast a function call normally returns control. The jumped-to locations are usually identified using labels, though some languages use line numbers. At the machine code level, a goto is a form of branch or jump statement. Many languages support the goto statement, and many do not (see language support).

The structured program theorem proved that the goto statement is not necessary to write programs; some combination of the three programming constructs of sequence, selection/choice, and repetition/iteration are sufficient for any computation that can be performed by a Turing machine, with the caveat that code duplication and additional variables may need to be introduced. At machine code level, goto is used to implement the structured programming constructs.

In the past there was considerable debate in academia and industry on the merits of the use of goto statements. Use of goto was formerly common, but since the advent of structured programming in the 1960s and 1970s its use has declined significantly. The primary criticism is that code that uses goto statements is harder to understand than alternative constructions. Goto remains in use in certain common usage patterns, but alternatives are generally used if available. Debates over its (more limited) uses continue in academia and software industry circles.