state of a process operating system

... in nature to a data manager which fails to free data, but is easier to detect and prevent. • Data manager changes data. A malicious data manager may change the value of its data on each cache refresh. ... design of Mach owes a great deal to a previous system developed at CMU called Accent [15]. A central feature of Accent was the integration of virtual memory and communication. Large amounts of data ... data. It is usually made in response to a pager_data_request call made to the data manager by the kernel. Typical data managers will only provide data upon demand (when processing pager_data_request...

Ngày tải lên: 12/09/2012, 15:05

Ngày tải lên: 09/08/2014, 07:20

Ngày tải lên: 09/08/2014, 07:20

Ngày tải lên: 09/08/2014, 07:20

Ngày tải lên: 09/08/2014, 07:20

Ngày tải lên: 09/08/2014, 07:20

Ngày tải lên: 09/08/2014, 07:20

Ngày tải lên: 09/08/2014, 07:20

Ngày tải lên: 09/08/2014, 07:20

Ngày tải lên: 09/08/2014, 07:20

Ngày tải lên: 09/08/2014, 07:20

Ngày tải lên: 25/12/2013, 08:50

... random 'back-off' times and no guarantee of performance. Token passing, although slower, generally 1 to 2 Mbaud has guaranteed performance, and is generally cheaper. The maximum transmission ... (b). Baseband transmission COMMUNICATION PLC COMMUNICATIONS IN A PROCESS CONTROL SYSTEM by GR MacKenzie, AEG Communication has become a major part of any process control automation system. Today ... resistance of the medium to contamination of the transmitted data • relative cost: based on costs of computers, installation, and maintenance. Transmission media or channels have the following transmission...

Ngày tải lên: 25/01/2014, 05:20

... AAACGCCTTCGCCCAAAGTTTAAAAGATGA 22 TCATCTTTTAAACTTTGGGCGAAGGCGTTT 23 TTTTCTCGAGAAAGATGCCGATTTGGGCGC 24 GGGGCTCGAGGTTTTATATTTGTTGTAAAA 25 ATATTATATATATATATAGGGTCGTATATA 26 AAATTATAGAAAGCAGTAGA TAAAACAATG 27 CTTCGAAGAATATACTAAAAAATGAGCAGG CAAGATAAACGAAGGCAAAGTTCAATTCA TCATTTTTTTTTTATTCTTTT 28 ... GCCCGGATCCTGATAGTAATAGAATCCAAA 4 CCCCGAATTCAAATTATAGAAAGCAGTAGA 5 AAGGCTCGAGAGATCTGTTTAGCTTGCCTC 6 AAAAGTCGACGAGCTCGTTTTCGACACTGG 7 TTTTGTCGACATGGCGCAACACGATGAAGC CGTAGACAAC 8 GGGGGGATCCTTACATAAGCGTACAACAAA CACTATTTGATTTCGGCGCCTGAGCATCA TTTAGCTTTTT 9 ... TTTTGTCGACATGGCGCAACACGATGAAGC CGTAGACAAC 18 GGGGGGATCCTTACATAAGCGTACAACAAA CACTATTTGATTTCGGCGCCTGAGCATCA TTTAGCTTTTT 19 ATCCAAAGTTTAGCCGATGACCCAAGCCAA 20 TTGGCTTGGGTCATCGGCTAAACTTTGGAT 21 AAACGCCTTCGCCCAAAGTTTAAAAGATGA 22...

Ngày tải lên: 16/03/2014, 01:20

... object-relational database system Illustra [I11941 provides database support for time-series data along with relational data. A time-series is an ADT(Abstract Data Type) value implemented a& amp; a large ... value is created, or determined automatically by the system. Catalog Management: Each E-ADT can provide catalogs that maintain statistics and store schema information. Further, certain values ... PREDATOR system (of which SEQ is a component) supports relational data as well as sequence data, using a novel design paradigm of enhanced abstract data types (B- ADTs ). The system implementation...

Ngày tải lên: 16/03/2014, 16:20

... transfer-based MT system, actual trans- lation takes place in transfer and can be descri- bed as the ocr~putaticnal manipulation of tree structures. In the absenoe of any formal theory of translation ... This software tool not only allows for the separation of data and algorithms but also provides great flexibility in the organization of grammars and subgrammars, and in the control of the ... ~;Tp~oach does not make any claim to linguistic generaliza- bility for purposes other than the translation of this particular sublanguage. 4.1 Ccmputational considerations In a transfer-based...

Ngày tải lên: 17/03/2014, 19:21

... issues are also raised in (Zhao and Wang, 2010) about using automatic metrics: paraphrase changes less gets larger BLEU score and the evaluations of paraphrase quality and rate tend to be incompatible. To ... re- lies on as the corpus is not readily available (Zhao et al., 2010). In contrast, bilingual parallel data is in abundance and has been used in extracting paraphrase (Ban- nard and Callison-Burch, ... and William B. Dolan. 2011. Collecting highly parallel data for paraphrase evaluation. In ACL, pages 190–200. David Chiang. 2007. Hierarchical phrase-based transla- tion. Computational Linguistics,...

Ngày tải lên: 23/03/2014, 14:20

... First, land cover data are obtained through analysis of aerial photographs. This reveals forested as well as open grassy areas and also water surface; it also reveals impervious surfaces in parks—roadways, ... D.C.’s Parks Value of properties within 500 feet of parks Assumed average value of a park Value of properties attributed to parks Effective annual residential tax rate Annual property tax capture ... to park-based social capital. Philadelphia Department of Parks and Recreation 11 Reducing the Cost of Managing Urban Stormwater Stormwater runoff is a significant problem in urban areas. When...

Ngày tải lên: 02/04/2014, 08:20

... E 2 are locally asymptotically stable and E 3 is a saddle. There exists the global stable manifold W s (E 3 ) that separates the positive quadrant so that all orbits below this manifold are attracted ... There exists a continuous increasing curve W E which is a subset of basin of attraction of E. All orbits that start below this curve are attracted to (+∞, 0). All orbits that start above this curve are attracted ... formula for the global stable manifold. Mathematics Subject Classification (2000) Primary: 3 9A1 0, 3 9A1 1 Secondary: 37E99, 37D10 Keywords: Basin of attraction, Competitive map, Global stable manifold,...

Ngày tải lên: 21/06/2014, 00:20

... quasilinear equations of parabolic type. Translation of Mathematical Monographs. American Mathematical Society, Providence. 23 (1968) 15. Friedman, A: Partial Differential Equations of Parabolic Type. ... quasilinear degenerate parabolic systems. Problems of this form arise in a number of areas of science. For instance, in models for gas or fluid flow in porous media [1-3] and for the spread of certain ... 11 RESEA R C H Open Access Local existence and uniqueness of solutions of a degenerate parabolic system Dazhi Zhang, Jiebao Sun * and Boying Wu * Correspondence: sunjiebao@126. com Department of Mathematics, Harbin...

Ngày tải lên: 21/06/2014, 03:20