Velocity

The velocity of an object is the rate of change of its position with respect to a frame of reference, and is a function of time. Velocity is equivalent to a specification of its speed and direction of motion (e.g. 7001166666666666666♠60 km/h to the north). Velocity is an important concept in kinematics, the branch of classical mechanics that describes the motion of bodies.

Velocity is a physical vector quantity; both magnitude and direction are needed to define it. The scalar absolute value (magnitude) of velocity is called "speed", being a coherent derived unit whose quantity is measured in the SI (metric) system as metres per second (m/s) or as the SI base unit of (m⋅s⁻¹). For example, "5 metres per second" is a scalar (not a vector), whereas "5 metres per second east" is a vector.

If there is a change in speed, direction, or both, then the object has a changing velocity and is said to be undergoing an acceleration.

Constant velocity vs acceleration

To have a constant velocity, an object must have a constant speed in a constant direction. Constant direction constrains the object to motion in a straight path thus, a constant velocity means motion in a straight line at a constant speed.

Velocity (software development)

Velocity is a capacity planning tool sometimes used in Agile software development. Velocity tracking is the act of measuring said velocity. The velocity is calculated by counting the number of units of work completed in a certain interval, the length of which is determined at the start of the project.

Principle

The main idea behind velocity is to help teams estimate how much work they can complete in a given time period based on how quickly similar work was previously completed.

Terminology

The following terminology is used in velocity tracking.

Usage

To calculate velocity, a team first has to determine how many units of work each task is worth and the length of each interval. During development, the team has to keep track of completed tasks and, at the end of the interval, count the number of units of work completed during the interval. The team then writes down the calculated velocity in a chart or on a graph.

The first week provides little value, but is essential to provide a basis for comparison. Each week after that, the velocity tracking will provide better information as the team provides better estimates and becomes more used to the methodology.

Velocity (TV channel)

Velocity (formerly HD Theater and originally Discovery HD Theater) is an American high-definition, commercial-based, cable and satellite television channel owned by Discovery Communications. The channel specializes in nonfictional programming, focusing on cars, sports related shows, and other programming targeted at men ages 18–54.

As of February 2015, approximately 62.3 million American households (53.5% of households with television) receive Velocity.

History

The channel launched nationwide in the United States on June 17, 2002, as Discovery HD Theater. The channel was rebranded to HD Theater on September 22, 2007, because Discovery Communications launched HD simulcasts of some of its other channels including Animal Planet, Discovery Channel, Science and TLC.

On April 14, 2011, Discovery Communications announced that HD Theater would be re-launched as Velocity later in the year: aimed primarily at an "upscale male" audience, the network focuses primarily on automotive-oriented programming and other shows of interest to a male audience. The re-launch took place on October 4, 2011.

Sadness

Sadness (also called heavy-heartedness) is emotional pain associated with, or characterized by feelings of disadvantage, loss, despair, grief, helplessness, disappointment and sorrow. An individual experiencing sadness may become quiet or lethargic, and withdraw themselves from others. Crying is often an indication of sadness.

Sadness is one of the "six basic emotions" described by Paul Ekman, along with happiness, anger, surprise, fear and disgust.

In childhood

Sadness is a common experience in childhood. Acknowledging such emotions can make it much easier for families to address more serious emotional problems, although some families may have a (conscious or unconscious) rule that sadness is "not allowed".Robin Skynner has suggested that this may cause problems, because with sadness "screened-off" we are left a bit shallow and manic.

Sadness is part of the normal process of the child separating from an early symbiosis with the mother and becoming more independent. Every time a child separates just a tiny bit more, he or she will have to cope with a small loss. If the mother cannot allow the minor distress involved, the child may never learn how to deal with sadness by themselves. Pediatrician T. Berry Brazelton argues that too much cheering a child up devalues the emotion of sadness for them; and Selma Fraiberg suggests that it is important to respect a child's right to experience a loss fully and deeply.

Sadness (video game)

Sadness was a survival horror video game in development by Nibris for the Wii console and was one of the earliest titles announced for the system. While the game initially drew positive attention for its unique gameplay concepts, such as black-and-white graphics and emphasis on psychological horror over violence, Sadness became notorious when no evidence of a playable build was ever publicly released during the four years it spent in development. It was revealed that Sadness had entered development hell due to problems with deadlines and relationships with external developers, leading to its eventual cancellation by 2010, along with the permanent closure of the company.

Concept

Sadness was promoted as a unique and realistic survival horror game that would "surprise players," focusing on psychological horror rather than violence, containing "associations with narcolepsy, nyctophobia and paranoid schizophrenia." More notable was the announcement that the game would sport black-and-white visuals stylized as gothic horror.

Radiosurgery (album)

Radiosurgery is the seventh studio album by American rock band New Found Glory. It was first released on September 30, 2011 in Australia, before its wider release on October 4 through independent label Epitaph Records. It is the band's final studio album to feature founding guitarist Steve Klein. To follow up predecessor Not Without a Fight (2009), the band began writing new material during their stint on the 2010 Honda Civic Tour. After self-producing a set of demos and contacting long-term record producer Neal Avron, the band went on to record the album in Avron's home recording studio over a period of three months in 2011. The quintet set out to write an album that paid homage to classic punk rock records that first inspired them to form a band during the 1990s. Listening extensively to the likes of early Green Day and Ramones, New Found Glory strove to create a sound that could "bridge the gap" between old and new generations of the genre.

The album title is a reference to the actual medical procedure radiosurgery, with the lyrics directly influenced by a troubled divorce suffered within the band. Radiosurgery was written as a concept album about the different emotions an individual goes through after a separation, including feelings of regret, sadness, and insanity. The band looked up several brain surgeries, settling on Radiosurgery, using the idea that instead of using the procedure to remove a tumor from the brain, it could remove memories.