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53-626: The Pikes Peak granite was emplaced in Colorado's central Front Range from three major intrusive centers near what is now Pikes Peak, Buffalo Park and the Lost Creek Wilderness . It is the geochemically potassic series of plutons compromising most of the Pikes Peak batholith , a batholith formed of two major types of plutons, the potassic Pikes Peak granite and later plutons, plus late stage sodic syenite and granite plutons. Both

106-558: A first-class entity , rather than the specific place where the object is located at a certain time. It implements the Uniform Resource Identifier ( Uniform Resource Name ) concept and adds to it a data model and social infrastructure. A DOI name also differs from standard identifier registries such as the ISBN , ISRC , etc. The purpose of an identifier registry is to manage a given collection of identifiers, whereas

159-676: A watershed for the Platte River Basin. The area is notable for its many rock formations , natural arches , and rounded granite domes and knobs. These are contained in two ranges of low alpine foothills of the Rocky Mountains : the Kenosha Mountains and the Tarryall Mountains. 12,431-foot (3,789 m) Bison Peak is the highest peak in the wilderness. Because of its proximity to Denver ,

212-448: A DOI name is a handle, and so has a set of values assigned to it and may be thought of as a record that consists of a group of fields. Each handle value must have a data type specified in its <type> field, which defines the syntax and semantics of its data. While a DOI persistently and uniquely identifies the object to which it is assigned, DOI resolution may not be persistent, due to technical and administrative issues. To resolve

265-540: A DOI name, it may be input to a DOI resolver, such as doi.org . Another approach, which avoids typing or copying and pasting into a resolver is to include the DOI in a document as a URL which uses the resolver as an HTTP proxy, such as https://doi.org/ (preferred) or http://dx.doi.org/ , both of which support HTTPS. For example, the DOI 10.1000/182 can be included in a reference or hyperlink as https://doi.org/10.1000/182 . This approach allows users to click on

318-406: A large part of the central Front Range of Colorado. It is found as far north as the southern slopes of Mount Blue Sky west of Denver , west to South Park , and as far south as Cañon City . The batholith is about 80 miles (130 km) long in the north-south direction and about 25 miles (40 km) wide east to west. Even more of it remains hidden underground. Geologists have found the granite at

371-401: A managed registry (providing both social and technical infrastructure). It does not assume any specific business model for the provision of identifiers or services and enables other existing services to link to it in defined ways. Several approaches for making identifiers persistent have been proposed. The comparison of persistent identifier approaches is difficult because they are not all doing

424-544: A non-profit organization created in 1997, is the governance body of the DOI system. It safeguards all intellectual property rights relating to the DOI system, manages common operational features, and supports the development and promotion of the DOI system. The IDF ensures that any improvements made to the DOI system (including creation, maintenance, registration, resolution and policymaking of DOI names) are available to any DOI registrant. It also prevents third parties from imposing additional licensing requirements beyond those of

477-419: A transaction, etc. The names can refer to objects at varying levels of detail: thus DOI names can identify a journal, an individual issue of a journal, an individual article in the journal, or a single table in that article. The choice of level of detail is left to the assigner, but in the DOI system it must be declared as part of the metadata that is associated with a DOI name, using a data dictionary based on

530-682: Is a persistent identifier or handle used to uniquely identify various objects, standardized by the International Organization for Standardization (ISO). DOIs are an implementation of the Handle System ; they also fit within the URI system ( Uniform Resource Identifier ). They are widely used to identify academic, professional, and government information, such as journal articles, research reports, data sets, and official publications . A DOI aims to resolve to its target,

583-450: Is a type of Handle System handle, which takes the form of a character string divided into two parts, a prefix and a suffix, separated by a slash. The prefix identifies the registrant of the identifier and the suffix is chosen by the registrant and identifies the specific object associated with that DOI. Most legal Unicode characters are allowed in these strings, which are interpreted in a case-insensitive manner. The prefix usually takes

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636-515: Is in both Park and Jefferson counties. Rock formations with pinnacles and spires are located in narrow gorges and on ridges. An underground stream "disappears and reappears" nine times or more at the site. Episode 2 of Season 1 of the television series Supernatural takes place within the Lost Creek Wilderness area, specifically at the fictitious Blackwater Ridge. Doi (identifier) A digital object identifier ( DOI )

689-696: Is maintained by the International DOI Foundation. The IDF is recognized as one of the federated registrars for the Handle System by the DONA Foundation (of which the IDF is a board member), and is responsible for assigning Handle System prefixes under the top-level 10 prefix. Registration agencies generally charge a fee to assign a new DOI name; parts of these fees are used to support the IDF. The DOI system overall, through

742-464: Is shown with a DOI name that leads to an Excel file of data underlying the tables and graphs. Further development of such services is planned. Other registries include Crossref and the multilingual European DOI Registration Agency (mEDRA) . Since 2015, RFCs can be referenced as doi:10.17487/rfc ... . The IDF designed the DOI system to provide a form of persistent identification , in which each DOI name permanently and unambiguously identifies

795-559: Is to use one of a number of add-ons and plug-ins for browsers , thereby avoiding the conversion of the DOIs to URLs, which depend on domain names and may be subject to change, while still allowing the DOI to be treated as a normal hyperlink. A disadvantage of this approach for publishers is that, at least at present, most users will be encountering the DOIs in a browser, mail reader , or other software which does not have one of these plug-ins installed. The International DOI Foundation ( IDF ),

848-663: The Western U.S. were subjected to a series of uplifts, known as the Laramide orogeny , that eventually formed the modern Rocky Mountains and raised Pikes Peak to its current height. Pikes Peak, like other portions of Colorado Rockies is still being uplifted today as a part of larger tectonic processes affecting the Western United States. Today, the Pikes Peak Batholith and Granite is exposed over

901-497: The indecs Content Model . The official DOI Handbook explicitly states that DOIs should be displayed on screens and in print in the format doi:10.1000/182 . Contrary to the DOI Handbook , Crossref , a major DOI registration agency, recommends displaying a URL (for example, https://doi.org/10.1000/182 ) instead of the officially specified format. This URL is persistent (there is a contract that ensures persistence in

954-485: The DOI System. It requires an additional layer of administration for defining DOI as a URN namespace (the string urn:doi:10.1000/1 rather than the simpler doi:10.1000/1 ) and an additional step of unnecessary redirection to access the resolution service, already achieved through either http proxy or native resolution. If RDS mechanisms supporting URN specifications become widely available, DOI will be registered as

1007-413: The DOI as a normal hyperlink . Indeed, as previously mentioned, this is how Crossref recommends that DOIs always be represented (preferring HTTPS over HTTP), so that if they are cut-and-pasted into other documents, emails, etc., they will be actionable. Other DOI resolvers and HTTP Proxies include the Handle System and PANGAEA . At the beginning of the year 2016, a new class of alternative DOI resolvers

1060-409: The DOI system associates metadata with objects. A small kernel of common metadata is shared by all DOI names and can be optionally extended with other relevant data, which may be public or restricted. Registrants may update the metadata for their DOI names at any time, such as when publication information changes or when an object moves to a different URL. The International DOI Foundation (IDF) oversees

1113-436: The DOI system have deliberately not registered a DOI namespace for URNs , stating that: URN architecture assumes a DNS-based Resolution Discovery Service (RDS) to find the service appropriate to the given URN scheme. However no such widely deployed RDS schemes currently exist.... DOI is not registered as a URN namespace, despite fulfilling all the functional requirements, since URN registration appears to offer no advantage to

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1166-459: The DOI system. DOI name-resolution may be used with OpenURL to select the most appropriate among multiple locations for a given object, according to the location of the user making the request. However, despite this ability, the DOI system has drawn criticism from librarians for directing users to non-free copies of documents, that would have been available for no additional fee from alternative locations. The indecs Content Model as used within

1219-634: The DOI useless. The developer and administrator of the DOI system is the International DOI Foundation (IDF), which introduced it in 2000. Organizations that meet the contractual obligations of the DOI system and are willing to pay to become a member of the system can assign DOIs. The DOI system is implemented through a federation of registration agencies coordinated by the IDF. By late April 2011 more than 50 million DOI names had been assigned by some 4,000 organizations, and by April 2013 this number had grown to 85 million DOI names assigned through 9,500 organizations. Fake registries have even appeared. A DOI

1272-501: The IDF on users of the DOI system. The IDF is controlled by a Board elected by the members of the Foundation, with an appointed Managing Agent who is responsible for co-ordinating and planning its activities. Membership is open to all organizations with an interest in electronic publishing and related enabling technologies. The IDF holds annual open meetings on the topics of DOI and related issues. Registration agencies, appointed by

1325-600: The IDF, operates on a not-for-profit cost recovery basis. The DOI system is an international standard developed by the International Organization for Standardization in its technical committee on identification and description, TC46/SC9. The Draft International Standard ISO/DIS 26324, Information and documentation – Digital Object Identifier System met the ISO requirements for approval. The relevant ISO Working Group later submitted an edited version to ISO for distribution as an FDIS (Final Draft International Standard) ballot, which

1378-472: The IDF, provide services to DOI registrants: they allocate DOI prefixes, register DOI names, and provide the necessary infrastructure to allow registrants to declare and maintain metadata and state data. Registration agencies are also expected to actively promote the widespread adoption of the DOI system, to cooperate with the IDF in the development of the DOI system as a whole, and to provide services on behalf of their specific user community. A list of current RAs

1431-535: The Mineral Deposits of the Pikes Peak Batholith, Colorado". Rocks & Minerals . 76 (5): 298–325. doi : 10.1080/00357520109603235 . S2CID   129923002 . Lost Creek Wilderness The Lost Creek Wilderness is a 119,790-acre (485 km ) wilderness area located in central Colorado in Jefferson and Park counties, south of the town of Bailey . The area is situated entirely within

1484-504: The area is quite popular for outdoor recreation in both the summer and winter months. Common activities in the area include hiking, backpacking, and rock climbing, as well as cross-country skiing, snowshoeing, and winter camping. There are 130 miles (210 km) of trails in the wilderness, including a section of the Colorado Trail that crosses Lost Creek then parallels the northeast boundary toward Kenosha Pass . Lost Park, as

1537-677: The area is sometimes called, was one of the last refuges of the American bison in the United States. The Lost Creek Scenic Area is a 16,798-acre (67.98 km ) site within the Lost Creek Wilderness that was created in 1963 under the 1939 "U-Regulations", which was the precursor of the Wilderness Act . The area was designated a National Natural Landmark in 1966. It is located in the Pike National Forest and

1590-506: The batholith and the Pikes Peak granite are A-type, meaning granites that originate in anorogenic , or non-mountain building, tectonic settings, with an alkaline geochemistry and arising from more anhydrous magmas. Over the next 300 million years, the now cooled granite was gradually exposed through erosion of the overlying rocks. About 700 million years ago, the granite was exposed at the surface and, for another 300 million years, it

1643-418: The bottom of deep wells on the plains and magnetic sensors have detected it as much as 80 miles (130 km) to the east. The granite ranges in color from light pink to almost red. The pink color is due to large amounts of microcline feldspar and various iron minerals that permeate the rock. The long cooling time and the chemical composition of the original magma allowed large crystals to precipitate out of

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1696-536: The boundaries of the Pike National Forest . The Lost Creek Scenic Area is a 16,798-acre National Natural Landmark within the Wilderness. The area is named for Lost Creek, a perennial stream that disappears and reappears before finally joining Goose Creek, which empties into the South Platte River at Cheesman Reservoir just east of the Wilderness area. The entire water system of the area forms

1749-459: The characters 1000 in the prefix identify the registrant; in this case the registrant is the International DOI Foundation itself. 182 is the suffix, or item ID, identifying a single object (in this case, the latest version of the DOI Handbook ). DOI names can identify creative works (such as texts, images, audio or video items, and software) in both electronic and physical forms, performances , and abstract works such as licenses, parties to

1802-414: The cooling magma produced a complex and unique mineralogy that attracts collectors from around the world and the Pikes Peak region is famous for its spectacular mineral specimens. Smoky quartz crystals and topaz are found in many places in the Pikes Peak granite. Probably the most famous mineral from the area is amazonite , a bluish form of microcline feldspar that is relatively rare in other parts of

1855-462: The document, whereas its location and other metadata may change. Referring to an online document by its DOI should provide a more stable link than directly using its URL. But if its URL changes, the publisher must update the metadata for the DOI to maintain the link to the URL. It is the publisher's responsibility to update the DOI database. If they fail to do so, the DOI resolves to a dead link , leaving

1908-403: The doi.org domain, ) so it is a PURL —providing the location of an name resolver which will redirect HTTP requests to the correct online location of the linked item. The Crossref recommendation is primarily based on the assumption that the DOI is being displayed without being hyperlinked to its appropriate URL—the argument being that without the hyperlink it is not as easy to copy-and-paste

1961-457: The form 10.NNNN , where NNNN is a number greater than or equal to 1000 , whose limit depends only on the total number of registrants. The prefix may be further subdivided with periods, like 10.NNNN.N . For example, in the DOI name 10.1000/182 , the prefix is 10.1000 and the suffix is 182 . The "10" part of the prefix distinguishes the handle as part of the DOI namespace, as opposed to some other Handle System namespace, and

2014-564: The full URL to actually bring up the page for the DOI, thus the entire URL should be displayed, allowing people viewing the page containing the DOI to copy-and-paste the URL, by hand, into a new window/tab in their browser in order to go to the appropriate page for the document the DOI represents. Major content of the DOI system currently includes: In the Organisation for Economic Co-operation and Development 's publication service OECD iLibrary , each table or graph in an OECD publication

2067-443: The functionality of a registry-controlled scheme and will usually lack accompanying metadata in a controlled scheme. The DOI system does not have this approach and should not be compared directly to such identifier schemes. Various applications using such enabling technologies with added features have been devised that meet some of the features offered by the DOI system for specific sectors (e.g., ARK ). A DOI name does not depend on

2120-405: The information object to which the DOI refers. This is achieved by binding the DOI to metadata about the object, such as a URL where the object is located. Thus, by being actionable and interoperable , a DOI differs from ISBNs or ISRCs which are identifiers only. The DOI system uses the indecs Content Model to represent metadata . The DOI for a document remains fixed over the lifetime of

2173-547: The integration of these technologies and operation of the system through a technical and social infrastructure. The social infrastructure of a federation of independent registration agencies offering DOI services was modelled on existing successful federated deployments of identifiers such as GS1 and ISBN . A DOI name differs from commonly used Internet pointers to material, such as the Uniform Resource Locator (URL), in that it identifies an object itself as

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2226-528: The magma. As a result, in many places the granite is very coarse grained, made up almost entirely of large crystals of feldspar, typically about a centimeter across. This makes the granite easily weathered and very crumbly. Almost every hill and slope in the Pikes Peak region is covered with thick blankets of loose gravel ( scree ) made up of marble-sized grains of feldspar. In some places, the cooling process lasted long enough to form pegmatites that contain large, pure crystals of various minerals. The chemistry of

2279-430: The object to which it is associated (although when the publisher of a journal changes, sometimes all the DOIs will be changed, with the old DOIs no longer working). It also associates metadata with objects, allowing it to provide users with relevant pieces of information about the objects and their relationships. Included as part of this metadata are network actions that allow DOI names to be resolved to web locations where

2332-467: The object's location and, in this way, is similar to a Uniform Resource Name (URN) or PURL but differs from an ordinary URL. URLs are often used as substitute identifiers for documents on the Internet although the same document at two different locations has two URLs. By contrast, persistent identifiers such as DOI names identify objects as first class entities: two instances of the same object would have

2385-454: The objects they describe can be found. To achieve its goals, the DOI system combines the Handle System and the indecs Content Model with a social infrastructure. The Handle System ensures that the DOI name for an object is not based on any changeable attributes of the object such as its physical location or ownership, that the attributes of the object are encoded in its metadata rather than in its DOI name, and that no two objects are assigned

2438-467: The primary purpose of the DOI system is to make a collection of identifiers actionable and interoperable, where that collection can include identifiers from many other controlled collections. The DOI system offers persistent, semantically interoperable resolution to related current data and is best suited to material that will be used in services outside the direct control of the issuing assigner (e.g., public citation or managing content of value). It uses

2491-411: The same DOI name. DOI name resolution is provided through the Handle System , developed by Corporation for National Research Initiatives , and is freely available to any user encountering a DOI name. Resolution redirects the user from a DOI name to one or more pieces of typed data: URLs representing instances of the object, services such as e-mail, or one or more items of metadata. To the Handle System,

2544-540: The same DOI name. Because DOI names are short character strings, they are human-readable, may be copied and pasted as text, and fit into the URI specification. The DOI name-resolution mechanism acts behind the scenes, so that users communicate with it in the same way as with any other web service; it is built on open architectures , incorporates trust mechanisms , and is engineered to operate reliably and flexibly so that it can be adapted to changing demands and new applications of

2597-431: The same thing. Imprecisely referring to a set of schemes as "identifiers" does not mean that they can be compared easily. Other "identifier systems" may be enabling technologies with low barriers to entry, providing an easy to use labeling mechanism that allows anyone to set up a new instance (examples include Persistent Uniform Resource Locator (PURL), URLs, Globally Unique Identifiers (GUIDs), etc.), but may lack some of

2650-411: The world. Many museum collections have stunning specimens of deep blue amazonite crystals studded with jet-black smoky quartz crystals. 1. Granite Tectonics Of Pikes Peak Composite Batholith Colorado Pegmatite Symposium - 1986 R.M. Hutchinson - Colorado School of Mines 2. Colorado Gem Trails and Mineral Guide Richard M. Pearl 3rd rev. ed. 1993 3. Raines, Ed (1 September 2001). "A Brief Summary of

2703-521: Was approved by 100% of those voting in a ballot closing on 15 November 2010. The final standard was published on 23 April 2012. DOI is a registered URI under the info URI scheme specified by IETF RFC   4452 . info:doi/ is the infoURI Namespace of Digital Object Identifiers. The DOI syntax is a NISO standard, first standardized in 2000, ANSI/NISO Z39.84-2005 Syntax for the Digital Object Identifier. The maintainers of

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2756-619: Was started by http://doai.io. This service is unusual in that it tries to find a non-paywalled (often author archived ) version of a title and redirects the user to that instead of the publisher's version . Since then, other open-access favoring DOI resolvers have been created, notably https://oadoi.org/ in October 2016 (later Unpaywall ). While traditional DOI resolvers solely rely on the Handle System, alternative DOI resolvers first consult open access resources such as BASE (Bielefeld Academic Search Engine). An alternative to HTTP proxies

2809-629: Was subject to extensive weathering . Since no sediments were being deposited, there is a large time gap in the geological record. This gap is part of a more generalized gap called the Great Unconformity . About 510 million years ago, the granite was again subject to deposition and was gradually buried by thick layers of sediment. Over the next 450 million years, the area was covered by seas , reefs , beaches , sand dunes and mountain streams which laid down more than 15,000 feet (4,500 m) of sediment. About 60 million years ago, parts of

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