An index is an indirect shortcut derived from and pointing into a greater volume of values, data, information or knowledge. Index may refer to:
A database index is a data structure that improves the speed of data retrieval operations on a database table at the cost of additional writes and storage space to maintain the index data structure. Indexes are used to quickly locate data without having to search every row in a database table every time a database table is accessed. Indexes can be created using one or more columns of a database table, providing the basis for both rapid random lookups and efficient access of ordered records.
An index is a copy of select columns of data from a table that can be searched very efficiently that also includes a low-level disk block address or direct link to the complete row of data it was copied from. Some databases extend the power of indexing by letting developers create indices on functions or expressions. For example, an index could be created on upper(last_name)
, which would only store the upper case versions of the last_name
field in the index. Another option sometimes supported is the use of partial indices, where index entries are created only for those records that satisfy some conditional expression. A further aspect of flexibility is to permit indexing on user-defined functions, as well as expressions formed from an assortment of built-in functions.
In statistics and research design, an index is a composite statistic – a measure of changes in a representative group of individual data points, or in other words, a compound measure that aggregates multiple indicators. Indexes summarize and rank specific observations.
Much data in the field of social sciences is represented in various indices such as Gender Gap Index, Human Development Index or the Dow Jones Industrial Average.
Item in indexes are usually weighted equally, unless there are some reasons against it (for example, if two items reflect essentially the same aspect of a variable, they could have a weight of 0.5 each).
Constructing the items involves four steps. First, items should be selected based on their face validity, unidimensionality, the degree of specificity in which a dimension is to be measured, and their amount of variance. Items should be empirically related to one another, which leads to the second step of examining their multivariate relationships. Third, indexes scores are designed, which involves determining their score ranges and weights for the items. Finally, indexes should be validateds, which involves testing whether they can predict indicators related to the measured variable not used in their construction.
Sovereignty is understood in jurisprudence as the full right and power of a governing body to govern itself without any interference from outside sources or bodies. In political theory, sovereignty is a substantive term designating supreme authority over some polity. It is a basic principle underlying the dominant Westphalian model of state foundation.
Derived from Latin through French souveraineté, its attainment and retention, in both Chinese and Western culture, has traditionally been associated with certain moral imperatives upon any claimant.
The concept of sovereignty has been discussed throughout history, from the time before recorded history through to the present day. It has changed in its definition, concept, and application throughout, especially during the Age of Enlightenment. The current notion of state sovereignty contains four aspects consisting of territory, population, authority and recognition. According to Stephen D. Krasner, the term could also be understood in four different ways:
CS Sovereign is a class DP2 type cable ship used for subsea cable installation and repair works. The ship was designed by BT Marine with Hart Fenton & Company as Naval Architects (now Houlder Ltd) and built by Van der Giessen de Noord in 1992.
CS Sovereign has four cable tanks. Two main tanks have capacity of 1,327 cubic metres (46,900 cu ft) or 2,668 tonnes each. Two wing tanks have capacity of 199 cubic metres (7,000 cu ft) or 432 tonnes each. The vessel is equipped with two hydraulic powered drums with 3.5 metres (11 ft) in diameter and four wheel pair haul-off gears.
Sovereign is an album by Christian recording artist Michael W. Smith released on May 13, 2014 through Capitol Records. The album debuted at No. 10 on the Billboard 200 and at No. 1 on the Christian Albums chart.
The album's first single, "You Won't Let Go", was released digitally on February 4, 2014 and it opened at No. 13 on the Billboard Hot Christian Songs chart. Christian singer Kari Jobe is featured on one of the songs on the album.
Sovereign met with generally positive reception from music critics. At CCM Magazine, Grace S. Aspinwall rated the album four stars out of five, remarking how "Over all, the record shows Smith returning to what he does best [...] ushering listeners into worship", and that "Time has granted a lovely depth to his vocal, which is surrounded by smart, fresh arrangements." Sarah Fine of New Release Tuesday rated the album four stars out of five, observing how "Sovereign is a solid musical representation of Michael W. Smith's growth as an artist in the last decade." At Indie Vision Music, Jonathan Andre rated the album four stars out of five, calling this "a poignant, powerful and prolific" release. Matt Collar of AllMusic rated the album three-and-a-half stars out of five, indicating how "Smith has crafted an earnest and heartfelt recording inspired by his deep faith." At Cross Rhythms, Tim Holden rated the album nine out of ten squares, commenting how "the Michael touch shines through and the quality and passion make this one of the best worship albums for quite a while - very easy to both listen to and worship along with."
Glow is the second studio album by English Britpop band Reef. Produced by the band and George Drakoulias, the album was released on 27 January 1997 supported by the singles "Place Your Hands", "Come Back Brighter", "Consideration" and "Yer Old". Glow topped the UK Albums Chart.
Generally speaking, Glow was received positively. Stephen Thomas Erlewine of music website Allmusic gave the album four out of five stars, claiming it to be "more focused and better than its predecessor [Replenish]" and describing it as "inspired" and "terrific". Rock music magazine Kerrang! ranked the album third on their 1997 "Albums of the Year" list.
All lyrics written by Gary Stringer, all music composed by Reef.