Bureau of Insular Affairs File 2291(pt.), Adjutant General's Office File 093.5(9-5-34) (1) Section 1-D, Department of the Interior File 9-7-25 and Office of Territories Miscellaneous ...
0000 - Gale Group | NCCO AsiaWest
In data processing problems, files are frequently used which must both be searched and altered. Binary search techniques are efficient for searching large files, but the associated file organization is not readily adapted to the file alterations. Conversely, a chained file allocation permits e 1 cient alteration but cannot be searched efficiently. A file organized into a tree-like structure is discussed, and it is shown that such a file may both be searched and altered with times ... s N , where N is the number of file items and s is a parameter of the ...
Tópico(s): Data Management and Algorithms
1963 - Association for Computing Machinery | Communications of the ACM
Bureau of Insular Affairs File 2291(pt.), Adjutant General's Office File 093.5(9-5-34) (1) Section 1-D, Department of the Interior File 9-7-25 and Office of Territories Miscellaneous ...
0000 - Gale Group | NCCO AsiaWest
A generalized file structure is provided by which the concepts of keyword, index, record, file, directory, file structure, directory decoding, and record retrieval are defined and from which some of the frequently used file structures such as inverted files, index-sequential files, and multilist files are derived. Two algorithms which ...
Tópico(s): Data Management and Algorithms
1970 - Association for Computing Machinery | Communications of the ACM
Bureau of Insular Affairs File 2291(pt.), Adjutant General's Office File 093.5(9-5-34) (1) Section 1-D, Department of the Interior File 9-7-25 and Office of Territories Miscellaneous ...
0000 - Gale Group | NCCO AsiaWest
... chapter introduces the reader with limited knowledge of file organization techniques to this area in such a ... that are made in the design of a file organization. For this reason, the discussion of each ... that are important in the selection of a file organization technique. The chapter starts with an elementary introduction to file structures, and detailed discussions of the next sections. The next section of this chapter discusses random file structures, including direct address, dictionary lookup, and calculation ...
Tópico(s): Scientific Computing and Data Management
1972 - Elsevier BV | Advances in computers
ASTM International
Bureau of Insular Affairs File 2291(pt.), Adjutant General's Office File 093.5(9-5-34) (1) Section 1-D, Department of the Interior File 9-7-25 and Office of Territories Miscellaneous ...
0000 - Gale Group | NCCO AsiaWest
... is described for isolating the differences between two files. One application is the comparing of two versions of a source program or other file in order to display all differences. The algorithm ... is computationally efficient, with time linear in the file length. For most applications the algorithm isolates differences ... common subsequence. Another application of this algorithm merges files containing independently generated changes into a single file. The algorithm can also be used to generate efficient encodings of a file in the form of the differences between itself ...
Tópico(s): Advanced Database Systems and Queries
1978 - Association for Computing Machinery | Communications of the ACM
National Bureau of Economic Research (NBER)
Bureau of Insular Affairs File 2291(pt.), Adjutant General's Office File 093.5(9-5-34) (1) Section 1-D, Department of the Interior File 9-7-25 and Office of Territories Miscellaneous ...
0000 - Gale Group | NCCO AsiaWest
Chi‐Yu King, Robert D. Nason, R. O. Burford,
... in central California for the year 1969, open file report, 48U.S. Geol. Surv., Menlo Park, Calif., ... in central California for the year 1970, open file report, 73U.S. Geol. Surv., Menlo Park, Calif., ... in central California for the year 1971, open file report, 67U.S. Geol. Surv., Menlo Park, Calif., ... measurements in central California from 1968 to 1972Open File Rep. 74-31U.S. Geol. Surv., Menlo Park, ... system in central California, January-March 1972, open file report, 60U.S. Geol. Surv., Menlo Park, Calif., ...
Tópico(s): Seismic Waves and Analysis
1977 - American Geophysical Union | Journal of Geophysical Research Atmospheres
National Bureau of Economic Research (NBER)
Bureau of Insular Affairs File 2291(pt.), Adjutant General's Office File 093.5(9-5-34) (1) Section 1-D, Department of the Interior File 9-7-25 and Office of Territories Miscellaneous ...
0000 - Gale Group | NCCO AsiaWest
Katsumi Tanaka, Yahiko Kambayashi, Shuzo Yajima,
In 1972, Ghosh introduced the consecutive retrieval (CR) file organization. It is an efficient file organization in which all records pertinent to a ... paper, we introduce the quasi-consecutive retrieval (QCR) file organization. The QCR file organization is an extension of Ghosh's CR file organization and normally offers less redundancy. In the QCR file, all the records pertinent to each query are ... paper, we discuss graph theoretic properties of CR files and QCR files by using the properties of interval graphs well ...
Tópico(s): Optimization and Search Problems
1979 - Elsevier BV | Information Systems
National Bureau of Economic Research (NBER)
Bureau of Insular Affairs File 2291(pt.), Adjutant General's Office File 093.5(9-5-34) (1) Section 1-D, Department of the Interior File 9-7-25 and Office of Territories Miscellaneous ...
0000 - Gale Group | NCCO AsiaWest
... computer systems has encouraged the implementation of automatic file migration systems which move files dynamically between mass storage devices and disk in ... describing 13 months of user disk data set file references, we develop and evaluate (replacement) algorithms for the selection of files to be moved from disk to mass storage. ... We find that algorithms based on both the file size and the time since the file was last used work well. The best realizable ... on the empirical distribution of the times between file references. Acceptable results are also obtained by selecting ...
Tópico(s): Stochastic Gradient Optimization Techniques
1981 - Association for Computing Machinery | Communications of the ACM
National Bureau of Economic Research (NBER)
Bureau of Insular Affairs File 2291(pt.), Adjutant General's Office File 093.5(9-5-34) (1) Section 1-D, Department of the Interior File 9-7-25 and Office of Territories Miscellaneous ...
0000 - Gale Group | NCCO AsiaWest
In most large computer installations files are moved between on-line disk and mass storage (tape, integrated mass storage device) either automatically by the system and/or ... this paper we present and analyze long term file reference data in order to develop a basis for the construction of algorithms for file migration. Specifically, we examine the use of the ... installation through the analysis of 13 months of file reference data. We find that most files are used very few times. Of those that ... Thus, about two-thirds of all suffi1ciently active files appear to be referenced as a renewal process ...
Tópico(s): Computational Geometry and Mesh Generation
1981 - IEEE Computer Society | IEEE Transactions on Software Engineering
National Bureau of Economic Research (NBER)
Bureau of Insular Affairs File 2291(pt.), Adjutant General's Office File 093.5(9-5-34) (1) Section 1-D, Department of the Interior File 9-7-25 and Office of Territories Miscellaneous ...
0000 - Gale Group | NCCO AsiaWest
The OSI File Service defines a standard for transferring, accessing, and managing information stored in or moved between open systems as files. Within the framework defined by the OSI Reference Model the OSI File Service resides within the Application Layer (OSI layer 7). The OSI File Service describes features for basic file transfer and access allowing manipulation of the data contained in a file and features for management of individual files. To minimize the amount of detailed technical information ...
Tópico(s): Advanced Data Storage Technologies
1983 - Institute of Electrical and Electronics Engineers | Proceedings of the IEEE
National Bureau of Economic Research (NBER)
Bureau of Insular Affairs File 2291(pt.), Adjutant General's Office File 093.5(9-5-34) (1) Section 1-D, Department of the Interior File 9-7-25 and Office of Territories Miscellaneous ...
0000 - Gale Group | NCCO AsiaWest
Loretta Guarino Reid, Philip L. Karlton,
File systems coordinate simultaneous access of files by concurrent client processes. Although several processes may read a file simultaneously, the file system must grant exclusive access to one process wanting to write the file. Most file systems consider processes to be antagonistic: they prevent one process from taking actions on a file that have any chance to harm to another process already using the file. If several processes need to cooperate in a more sophisticated manner in their use of a file, they must communicate explicitly among themselves. The next ...
Tópico(s): Cellular Automata and Applications
1983 - Association for Computing Machinery | ACM SIGOPS Operating Systems Review