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A Fast File System for UNIX

A Fast File System for UNIX

... blocks that a user may allocate. A separate quota can be set for each user on each file system. Resources are given both a hard and a soft limit. When a program exceeds a soft limit, a warn- ing ... data, and possibly a single fragmented block. If a file system block must be fragmented to obtain space for a small amount of data, the remaining fragments of the block are made available for allocation ... fragment at a a time is that data may be copied many times as a fragmented block expands to a full block. Fragment reallocation can be minimized if the user program writes a full block at a time,...

Ngày tải lên: 12/09/2012, 14:16

14 1K 0
The Duality of Memory and Communication in the Implementation of a Multiprocessor Operating System

The Duality of Memory and Communication in the Implementation of a Multiprocessor 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. ... modify a page of data at a time. An attempt by a reader to write previously read data causes a memory fault which converts a reader into a writer and invalidates all other page caches. A subsequent ... servers than its kernel. 8 When a user task requires greater access to cached data than the data manager has permitted (e.g., a write fault on a page made read-only by a pager_data_lock call), the...

Ngày tải lên: 12/09/2012, 15:05

23 1,3K 1
A web-based system for notifying environment violation.doc

A web-based system for notifying environment violation.doc

... contains all logic data of application. Separating logic data from application into it will make program scalable and higher performance. Most of web applications today use Relational Database Management ... operating system. - Easy to manage, update database: Database is located at dedicated server that managers can maintain and update it easily. - Quick delivery: web-based model make it portable to ... load data from the system because only a part of web page is updated. It does not need to load entire web page. - Access management: each user can access content and use many features that are...

Ngày tải lên: 27/10/2012, 16:40

56 410 0
Tài liệu Cabling Standard - TIA - Category 6 A Standards and Systems Overview doc

Tài liệu Cabling Standard - TIA - Category 6 A Standards and Systems Overview doc

... This has been included in the category 6 standard as a funda- mental requirement and not as an addendum, as was the case for category 5e. Category 6 Cabling: A Standards and Systems Overview 3 As ... 6. AA QQuuiicckk CCoommppaarriissoonn ooff CCaatteeggoorryy 55,, 55ee aanndd 66 SSttaannddaarrddss RReeqquuiirreemmeennttss KKeeyy FFeeaattuurreess ooff tthhee CCaatteeggoorryy 66 SSttaannddaarrdd Following ... development of generic stan- dards primarily for balanced twisted-pair cabling systems. These standards cover balanced twist- ed-pair cable and associated connecting hardware specifications, including...

Ngày tải lên: 10/12/2013, 02:15

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Tài liệu Real-World ASP.NET—Building a Content Management System pptx

Tài liệu Real-World ASP.NET—Building a Content Management System pptx

... components and metacontent in one place makes them easier to maintain, track, and find. It also provides a more secure way of storing your data. Having your data localized means you have a smaller area ... personal preferences and navigational habits. Personalization is a major reason why many people return to a Web site. At one time, seeing her name on a Web page was all that was needed for a user ... content management application maintains all aspects of content components, and the metacontent management application maintains the same for metacontent. The content delivery application generates...

Ngày tải lên: 10/12/2013, 14:15

405 717 1
Tài liệu TIA - Category 6 A Standards and Systems Overview ppt

Tài liệu TIA - Category 6 A Standards and Systems Overview ppt

... opportunities and a competitive market environment. TIA’s standards program is accredited by the American National Standards Institute (ANSI) to develop American National Standards. The association provides ... 5e. Category 6 Cabling: A Standards and Systems Overview 3 As of TIA Cat 5 TIA Cat 5e TIA Cat 6 6/18/2002 TIA-568 -A TIA-568-B TIA-568-B.2-1 Oct-95 (Obsolete) Final May-01 Final Jun-02 Maximum ... Industry Association (TIA) announced today that the cat- egory 6 standard for telecommunications cabling has been approved for publication as TIA/EIA-568-B.2-1. This addendum is part of the TIA/EIA-568-B...

Ngày tải lên: 20/12/2013, 22:15

9 421 0
Tài liệu A Knowledge Management System for ERP Implementation pdf

Tài liệu A Knowledge Management System for ERP Implementation pdf

... It also represents an organizational infrastructure that affects how people work and imposes its own logic on a company’s strategy, organization and culture. After organizations accept the management ... Venkataramanan M. 2003. Enter- prise resource planning: managing the implementa- tion process. European Journal of Operational Research 146: 302–314. Motwni J, Mirchandani D, Madan M, Gunasekaran ... addition, the same question can be asked again and again and the quality of the answers can not be guaranteed. Therefore, the organiza- tion can have personnel in charge of monitoring and tracking questions...

Ngày tải lên: 16/01/2014, 16:33

12 622 1
Tài liệu PLC Communications in a Process Control System docx

Tài liệu PLC Communications in a Process Control System docx

... generally 1 to 2 Mbaud has guaranteed performance, and is generally cheaper. The maximum transmission time for any network configuration can be calculated. A classic rule for any PLC application ... simple and thus cheap, plus of course the fact that most PCs, which are used more and more in automation systems today, have at least one PS232 (serial) interface as a standard. RS232, however, has ... 3 (a) and (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. ...

Ngày tải lên: 25/01/2014, 05:20

8 472 1
Tài liệu A New Banking System The Needful Capital for Rebuilding the Burnt District docx

Tài liệu A New Banking System The Needful Capital for Rebuilding the Burnt District docx

... people, annually, fifty cents each, on an average, in interest! and also continue to pay, annually, two dollars and a half for each person, on an average, of the principal, of the national debt! CHAPTER ... would always have a value as fixed and well known as that of specie; that would always be many times more abundant than specie can ever be; and that could always be delivered (in the absence of ... printed. Legally, the system (as the author claims, and is prepared to establish) stands upon the same principle as a patented machine; and is, therefore, already legalized by Congress; and cannot,...

Ngày tải lên: 17/02/2014, 18:20

46 356 0
Tài liệu Panache: A Parallel File System Cache for Global File Access ppt

Tài liệu Panache: A Parallel File System Cache for Global File Access ppt

... massive and remote datasets. Panache supports a POSIX interface and employs a fully parallelizable design, enabling application s to saturate available network and compute hardware. Panache can also ... Panache was to mask the WAN latencies by ensuring applications see the cache cluster’s performance on all data writes and meta- data updates. Towards that end, all data writes and meta- data ... to queue and flush metadata operations on th e gateway nodes. Finally, we run a par- allel visualization application and a Hadoop application to analyze Panache with an HPC access p attern. 7.1...

Ngày tải lên: 19/02/2014, 18:20

14 636 0
Tài liệu Báo cáo khoa học: "Semantic Information and Derivation Rules for Robust Dialogue Act Detection in a Spoken Dialogue System" pptx

Tài liệu Báo cáo khoa học: "Semantic Information and Derivation Rules for Robust Dialogue Act Detection in a Spoken Dialogue System" pptx

... INTERSPEECH, pages 268–271. C. Hori, K. Ohtake, T. Misu, H. Kashioka, and S. Naka- mura. 2009b. Statistical dialog management applied to wfst-based dialog systems. In Proc. IEEE Inter- national Conference ... infor- mation data set harvested from the databases avail- able on the web, e.g., Wikipedia and Google Map. A- data consists of 1, 603 sentences with 317 word types. The second type of data, called ... utterance, H t is the dialogue historical information, and Ω = {A 1 , . . . , A q } is the set of DAs. Using the maximum approximation for summation, (1) can be written as A ∗ t = arg max A Ω  W P...

Ngày tải lên: 20/02/2014, 05:20

6 556 0
Tài liệu Báo cáo khoa học: "Using Automatically Transcribed Dialogs to Learn User Models in a Spoken Dialog System" doc

Tài liệu Báo cáo khoa học: "Using Automatically Transcribed Dialogs to Learn User Models in a Spoken Dialog System" doc

... 08540, USA usyed@cs.princeton.edu Jason D. Williams Shannon Laboratory AT&T Labs — Research Florham Park, NJ 07932, USA jdw@research.att.com Abstract We use an EM algorithm to learn user ... expectation and its maximization are easy to compute. This is because our dialog model has a chain-like structure that closely resembles an Hidden Markov Model, so a forward-backward procedure can ... θ be the maximum likelihood estimate using automatically transcribed data, i.e., θ asu = e K D as P a e K D as . This approach ignores transcription errors and assumes that user be- havior depends...

Ngày tải lên: 20/02/2014, 09:20

4 471 0
Tài liệu Báo cáo khoa học: "GEMINI: A NATURAL LANGUAGE SYSTEM FOR SPOKEN-LANGUAGE UNDERSTANDING*" doc

Tài liệu Báo cáo khoa học: "GEMINI: A NATURAL LANGUAGE SYSTEM FOR SPOKEN-LANGUAGE UNDERSTANDING*" doc

... the ATIS domain that can be on Tuesday at three o'clock on United is a flight. The utterance parser partitions the utterance grammar into equivalence classes and considers each class according ... that when they are formulated loosely, as in the pre- vious paragraph, they appear to conflict. In par- ticular, in ( 2a) , Right Association seems to call for the parse that makes for Mary a ... this paper describes the lexicon, grammar, and semantics of English, Gemini has also been used in a Japanese spo- ken language understanding system (Kameyama, 1992). 2.1. Grammar Formalism...

Ngày tải lên: 20/02/2014, 21:20

8 377 0
Tài liệu Báo cáo khoa học: "Paraphrasing Using Given and New Information in a Question-Answer System" docx

Tài liệu Báo cáo khoa học: "Paraphrasing Using Given and New Information in a Question-Answer System" docx

... Reptuentatton in Natural Language Inferenctng', to appear in IJCAI Proceedinqs 79. 13. [KAMAN 79]. Kaplan, S. J., "Cooperative Responses from a Portable Natural Larquage Data Base ... used by the paraphraser to generate questions. I • INTRO~ION In a natural language interface to a database query system, a paraphraser can be used to ensure that the system has correctly understood ... Pennsylvania, Philadelphia, Pa. 19104 ABSTRACT: The design and implementation of a paraphrase component for a natural language questlon-answer system (CO-OP) is presented. A major point made is the...

Ngày tải lên: 21/02/2014, 20:20

6 533 0
Tài liệu Analysing different technology pathways for the pulp and paper industry in a European energy systems perspective doc

Tài liệu Analysing different technology pathways for the pulp and paper industry in a European energy systems perspective doc

... scenarios concerning the future energy market. In Paper IV, a systematic approach for assessing a mill‟s steam balance, assuming only a limited amount of data, is developed and applied to a case ... case when the mill was modelled within the same system boundary as a utility, Papers I-III, a capital recovery factor of 0.1 was used as a base case 15 . The same capital recovery factor was ... papers are based on data from existing European pulp and paper mills as well as models depicting Scandinavian kraft and TMP mills. Main mill processes Chemical (kraft) Mechanical Paper Paper...

Ngày tải lên: 22/02/2014, 09:20

124 649 0

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