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Doubling Time Vs Half Life
Doubling may refer to: Mathematics * Arithmetical doubling of a count or a measure, expressed as: ** Multiplication by 2 ** Increase by 100%, i.e. one-hundred percent ** Doubling the cube (i. e., hypothetical geometric construction of a cube with twice the volume of a given cube) * Doubling time, the length of time required for a quantity to double in size or value * Doubling map, a particular infinite two-dimensional geometrical construction Music * The composition or performance of a melody with itself or itself transposed at a constant interval such as the octave, third, or sixth, Voicing (music)#Doubling * The assignment of a melody to two instruments in an arrangement * The playing of two (or more) instruments alternately by a single player, e.g. ''Flute, doubling piccolo'' ** Musicians who play more than one woodwind instrument are called woodwind doublers or reed players * Double tracking, a recording technique in which a musical part (or vocal) is recorded twice ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Multiplication
Multiplication is one of the four elementary mathematical operations of arithmetic, with the other ones being addition, subtraction, and division (mathematics), division. The result of a multiplication operation is called a ''Product (mathematics), product''. Multiplication is often denoted by the cross symbol, , by the mid-line dot operator, , by juxtaposition, or, in programming languages, by an asterisk, . The multiplication of whole numbers may be thought of as repeated addition; that is, the multiplication of two numbers is equivalent to adding as many copies of one of them, the ''multiplicand'', as the quantity of the other one, the ''multiplier''; both numbers can be referred to as ''factors''. This is to be distinguished from term (arithmetic), ''terms'', which are added. :a\times b = \underbrace_ . Whether the first factor is the multiplier or the multiplicand may be ambiguous or depend upon context. For example, the expression 3 \times 4 , can be phrased as "3 ti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Doubling (psychodrama)
Doubling is a central method in psychodrama and is also used in other forms of therapy and counseling. In mediation, for example, it is an aid when translating between disputing parties in conflict resolution and is, therefore, a mediation strategy. Difficult content can be transported from one conflict partner to another by the mediator. The mediator presents the statement in such a way that the person addressed understands it and the person who is doubled still recognizes it as his. In humanistic psychodrama, a double is a group member who appears next to the protagonist during the protagonist-centered work. In a holistic communication process, supported by body language alignment, the inner experience of the protagonist is clarified, conveyed to the group, and among other things, promoted knowledge and insight. This game is made possible by the constant process of interaction between the group members as a double and auxiliary ego (fellow player), the protagonist and the therape ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Double-track Railway
A double-track railway usually involves running one track in each direction, compared to a single-track railway where trains in both directions share the same track. Overview In the earliest days of railways in the United Kingdom, most lines were built as double-track because of the difficulty of co-ordinating operations before the invention of the telegraph. The lines also tended to be busy enough to be beyond the capacity of a single track. In the early days the Board of Trade did not consider any single-track railway line to be complete. In the earliest days of railways in the United States most lines were built as single-track for reasons of cost, and very inefficient timetable working systems were used to prevent head-on collisions on single lines. This improved with the development of the telegraph and the train order system. Operation Handedness In any given country, rail traffic generally runs to one side of a double-track line, not always the same side as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Slam Fire
A slamfire is a discharge of a firearm occurring as soon as a Cartridge (firearms), cartridge is being loaded into the Chamber (weaponry), chamber. Some firearms are designed to slamfire, but the term also describes a malfunction of self-loading firearms. Shooters accustomed to firearms requiring Trigger (firearms), trigger activation for discharge may be unprepared for a slamfire discharge. Some military firearms are designed to fire from an open bolt condition to avoid the unintended discharge of a chambered cartridge cooking off in a gun barrel heated by firing previous cartridges. Activating the trigger of such firearms releases the spring-loaded Bolt (firearms), bolt to move forward stripping a cartridge from the Magazine (firearms), magazine into the chamber. The firing pin impacts the Centerfire ammunition#Centerfire primers, primer as the cartridge is chambered, and the energy released by the discharging cartridge returns the bolt into an open position while ejecting the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Syntactic Doubling
Syntactic gemination, or syntactic doubling, is an external sandhi phenomenon in Italian, other Romance languages spoken in Italy, and Finnish. It consists in the lengthening (gemination) of the initial consonant in certain contexts. It may also be called word-initial gemination or phonosyntactic consonantal gemination. In Italian it is called ''raddoppiamento sintattico (RS), raddoppiamento fonosintattico (RF), raddoppiamento iniziale,'' or ''rafforzamento iniziale (della consonante).'' Italian "Syntactic" means that gemination spans word boundaries, as opposed to word-internal geminate consonants as in "cat" or "year". In standard Italian, syntactic doubling occurs after the following words (with exceptions described below): *all stressed ("strong") monosyllables (''monosillabi forti'') and some unstressed ("weak") monosyllables (''monosillabi deboli''): ''a'', ''blu'', ''che'', ''ché'', ''chi'', ''ciò'', ''da'', ''dà'', ''dì'', ''do'', ''e'', ''è'', ''fa'', ''fra'', ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Two-way Radio
A two-way radio is a radio transceiver (a radio that can both transmit and receive radio waves), which is used for bidirectional person-to-person voice communication with other users with similar radios, in contrast to a broadcast receiver, which only receives transmissions. Two-way radios usually use a half-duplex communication channel, which permits two-way communication, albeit with the limitation that only one user can transmit at a time. (This is in contrast to simplex communication, in which transmission can only be sent in one direction, and full-duplex, which allows transmission in both directions simultaneously.) This requires users in a group to take turns talking. The radio is normally in receive mode so the user can hear all other transmissions on the channel. When the user wants to talk, they press a " push-to-talk" button, which turns off the receiver and turns on the transmitter; when the button is released, the receiver is activated again. Multiple channels are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Double Knitting
Double knitting is a form of hand knitting in which two fabrics are knitted simultaneously on one pair of needles. The fabrics may be inseparable, as in ''interlock knitted fabrics'', or they can simply be two unconnected fabrics. In principle, an arbitrary number n of fabrics can be knitted simultaneously on one pair of knitting needles with n yarns, as long as one is careful. History A famous example of double knitting is the pair of socks knitted simultaneously on one set of knitting needles by Anna Makarovna, the nanny in Leo Tolstoy's ''War and Peace'': When the pair was finished, she made a solemn ceremony of pulling one stocking out of the other in the presence of the children. Double knit fabric Double knit fabric is a fabric where both sides of the fabric are identical, for example, Interlock and Rib. These fabrics are knitted with two sets of needles on the circular knitting machine that form a material with the same face and back, unlike a single knitted fabric, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Doubling (naval Tactic)
The line of battle or the battle line is a tactic in naval warfare in which a fleet of ships (known as ships of the line) forms a line end to end. The first example of its use as a tactic is disputed—it has been variously claimed for dates ranging from 1502 to 1652. Line-of-battle tactics were in widespread use by 1675. Compared with prior naval tactics, in which two opposing ships closed on one another for individual combat, the line of battle has the advantage that each ship in the line can fire its broadside without fear of hitting a friendly ship. This means that in a given period, the fleet can fire more shots. Another advantage is that a relative movement of the line in relation to some part of the enemy fleet allows for a systematic concentration of fire on that part. The other fleet can avoid this by manoeuvring in a line itself, with a result typical for sea battles since 1675: two fleets sail alongside one another (or on the opposite tack). Background The first ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Doubling (textiles)
Doubling is a textile industry term synonymous with combining. It can be used for various processes during spinning (textiles), spinning. During the carding stage, several sources of roving are doubled together and drawn, to remove variations in thickness. After spinning, yarn is doubled for many reasons. Yarn may be doubled to produce warp for weaving, to make cotton for lace, crochet and knitting. It is used for embroidery threads and sewing threads, for example: sewing thread is usually 6-cable thread. Two threads of spun cotton count, 60s cotton are twisted together, and three of these double threads are twisted into a cable, of what is now 5s yarn. This is mercerised cotton, mercerised, Gassing (textile process), gassed (AKA flamed) and Spinning_(textiles), wound onto a bobbin. Processing of cotton Doubling in the carding process In a wider sense carding can refer to the four processes of willowing, lapping, carding and drawing. During willowing the fibres are loosened; in l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Protagonist
A protagonist () is the main character of a story. The protagonist makes key decisions that affect the plot, primarily influencing the story and propelling it forward, and is often the character who faces the most significant obstacles. If a story contains a subplot, or is a narrative made up of several stories, then each subplot may have its own protagonist. The protagonist is the character whose fate is most closely followed by the reader or audience, and who is opposed by the antagonist. The antagonist provides obstacles and complications and creates conflicts that test the protagonist, revealing the strengths and weaknesses of the protagonist's character, and having the protagonist develop as a result. A particularly noble, virtuous, or accomplished protagonist is commonly called a ''hero,'' though the terms are not synonyms. Etymology The term ''protagonist'' comes , combined of (, 'first') and (, 'actor, competitor'), which stems from (, 'contest') via (, 'I conten ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Double Tracking
Double tracking or doubling is an audio recording technique in which a performer sings or plays along with their own prerecorded performance, usually to produce a stronger or bigger sound than can be obtained with a single voice or instrument. It is a form of overdubbing; the distinction comes from the doubling of a part, as opposed to recording a different part to go with the first. The effect can be further enhanced by panning one of the performances hard left and the other hard right in the stereo field. Automation Artificial or automatic double tracking, also known as ADT, was developed at Abbey Road Studios by engineers recording The Beatles in the 1960s. It used variable speed tape recorders connected in such a way as to mimic the effect created by double tracking. ADT produced a unique sound that could be imitated but not precisely duplicated by later analog and digital delay devices, which are capable of producing an effect called doubling echo. The effect is us ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Percentage
In mathematics, a percentage () is a number or ratio expressed as a fraction (mathematics), fraction of 100. It is often Denotation, denoted using the ''percent sign'' (%), although the abbreviations ''pct.'', ''pct'', and sometimes ''pc'' are also used. A percentage is a dimensionless quantity, dimensionless number (pure number), primarily used for expressing proportions, but percent is nonetheless a unit of measurement in its orthography and usage. Examples For example, 45% (read as "forty-five percent") is equal to the fraction , or 0.45. Percentages are often used to express a proportionate part of a total. (Similarly, one can also express a number as a fraction of 1,000, using the term "per mille" or the symbol "".) Example 1 If 50% of the total number of students in the class are male, that means that 50 out of every 100 students are male. If there are 500 students, then 250 of them are male. Example 2 An increase of $0.15 on a price of $2.50 is an increase by a fr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
