unreferenced date March 2010 Unreferenced stub auto yes date December 2009 Internet Optimizer , also known as DyFuCA is a spyware program which redirects Internet Explorer error pages to advertising pages. When users follow a broken link or enter an erroneous URL, they see a page of advertisements. However, because password protected Web sites HTTP Basic authentication use the same mechanism as HTTP errors, Internet Optimizer makes it impossible for the user to access password protected sites. It is classified as a Browser Helper Object or BHO, and as such, it loads whenever MS Internet Explorer starts and is not detected by firewalls or anti virus software, as it is seen as a legitimate part of the application. It is also classified as a downloader which can download, install and run software on the victim s computer without their permission. Category Spyware Malware stub sv Internet Optimizer ... more details
Mergefrom Query optimization date January 2009 The query optimizer is the component of a database management system that attempts to determine the most efficient way to execute a Information retrieval query . The optimizer considers the possible query plan s for a given input query, and attempts to determine which of those plans will be the most efficient. Cost based query optimizers assign an estimated cost to each possible query plan, and choose the plan with the smallest cost. Costs are used to estimate the runtime cost of evaluating the query, in terms of the number of I O operations required, the CPU requirements, and other factors determined from the data dictionary . The set of query plans examined is formed by examining the possible access paths e.g. index scan, sequential scan and join algorithm s e.g. sort merge join , hash join , nested loop join . The search space can become quite large depending on the complexity of the SQL query. Generally, the query optimizer cannot be accessed directly by users once queries are submitted to database server, and parsed by the parser, they are then passed to the query optimizer where optimization occurs. However, some database engines allow guiding the query optimizer with hint SQL hint s. Implementation Most query optimizers represent query plans as a Tree data structure tree of plan nodes . A plan node encapsulates a single operation ... also be used. For each relation, the optimizer records the cheapest way to scan the relation, as well as the cheapest way to scan the relation that produces records in a particular sorted order. The optimizer ... pair, the optimizer will consider the available join algorithms implemented by the Database management ... sql indexing and performance part 3 queries indexes and query optimizer SQL Indexes, Statistics and the Query Optimizer Databases DEFAULTSORT Query Optimizer Category Database algorithms Category Database management systems Category SQL de Anfrageoptimierer ja th Query optimizer ... more details
mergeto Solar micro inverter date March 2011 A power optimizer is a DC to DC converter technology developed to maximize the energy harvest from solar photovoltaic systems. They do this by individually tuning the performance of the panel through maximum power point tracking , and optionally tuning the output to match the performance of the string inverter . Power optimizers are especially useful when the performance of the panels in an array will vary widely, due to shading, differences in equipment, or being installed facing different directions. Power optimizers are similar to microinverter s, in that both systems attempt to isolate individual panels in order to improve overall system performance. A microinverter essentially combines a power optimizer with a small inverter in a single case that is used on every panel, while the power optimizer places the inverter in a separate box and uses only one per array. The claimed advantage to this hybrid approach is lower overall system costs, avoiding the distribution of electronics. Description MPPT Most energy production or storage devices have a complex relationship between the power they produce, the load placed on them, and the efficiency of the delivery. A conventional battery, for instance, stores energy in chemical reactions in their electrolytes and plates. These reactions take time to occur, which limits the rate at which the power can be efficiently drawn from the cell. ref Venkat Srinivasan, http gigaom.com cleantech the three laws of batteries and a bonus zeroth law The Three Laws of Batteries , GigaOm, 18 March 2011 ref For this reason, large batteries used for power storage generally list two or more capacities, normally the 2 hour and 20 hour rates, with the 2 hour rate often being around 50 of the 20 hour rate ..., naturally, to the power optimizer concept, where only the MPPT system is distributed to the panels ... DEFAULTSORT Power Optimizer Category Electrical power control Category Photovoltaics ... more details
Primary sources date December 2010 Google Website Optimizer is a free website optimization tool that helps online marketers and webmasters increase visitor conversion rates and overall visitor satisfaction by continually testing different combinations of website content. ref name gwo cite web url http www.google.com websiteoptimizer title Website Optimizer publisher Google accessdate 2010 12 14 ref Google Website Optimizer can test any element that exists as HTML code on a page including calls to action, fonts, headlines, point of action assurances, product copy, product images, product reviews, and forms. It can be used at multiple stage in the conversion funnel . Google Website Optimizer allows webmasters to test entire pages, known as A B testing or page elements, known as Multivariate testing such as Headings, images or body copy. This tool is part of Google Analytics , though accessed through a different user interface. As it is part of Google Analytics, it uses the Google analytics scripts. References references External links http services.google.com websiteoptimizer Google website optimizer http www.conversion rate experts.com articles 101 google website optimizer tips Google website optimizer 108 tips http www.pearl group.com google website optimizer joomla Open Source Google Website Optimizer Extension for Joomla Google Inc. DEFAULTSORT Website Optimizer Category Google services Category Web analytics web software stub de Google Website Optimierungstool ... more details
Image Binary optimizer.png thumb 180px A binary optimizer takes the existing output from a compiler and produces a better execution file with the same functionality. An object code optimizer , sometimes also known as a post pass optimizer or, for small sections of code, peephole optimization peephole optimizer , takes the output from a source language compile step the object code or binary file and tries to replace identifiable sections of the code with replacement code that is more algorithmic efficiency algorithmically efficient usually improved speed . Examples The COBOL Optimizer developed by Capex Corporation in the mid 1970 s for COBOL . This type of optimizer depended, in this case, upon knowledge of weaknesses in the standard IBM COBOL compiler, and actually replaced or Patch computing patch ed sections of the object code with more efficient code. The replacement code might replace a linear Lookup table table lookup with a binary search for example or sometimes simply replace a relatively slow instruction with a known faster one that was otherwise functionally equivalent within its context. This technique is now known as Strength reduction . For example on the IBM 360 hardware the CLI instruction was, depending on the particular model, between twice and 5 times as fast as a CLC instruction for single byte comparisons. ref http www.bitsavers.org pdf ibm 360 A22 6825 1 360instrTiming.pdf ... require charged maintenance to the optimizer to cater for possibly changed internal COBOL algorithms ... optimized versions until a supporting optimizer was released . Other optimizers using the same concept ... above, include The Sun Studio Binary Code Optimizer http developers.sun.com solaris articles binopt.html ... of a Dynamic Binary Optimizer from IBM T. J. Watson Res. Center Feb 2005 http ieeexplore.ieee.org ... &arnumber 4343832&isnumber 4343799 Spike Executable Optimizer Unix kernal http www.cesr.ncsu.edu fddo4 ... time References reflist DEFAULTSORT Object Code Optimizer Category Compiler optimizations Category ... more details
Context date March 2011 Notability date March 2011 SAP Advanced Planner and Optimizer consists of modules viz. Demand Planning, Supply Network planning, Production Planning and detail scheduling , Global Available to Promise and Transportation management & vehicle Scheduling External links http help.sap.com saphelp apo helpdata en 7e 63fc37004d0a1ee10000009b38f8cf frameset.htm Official Website Category SAP company ... more details
, or SOCP . The CPLEX Optimizer has a modeling layer called Concert that provides interfaces to the C ... to Microsoft Excel and MATLAB are provided. Finally, a stand alone Interactive Optimizer executable is provided for debugging and other purposes. The CPLEX Optimizer is accessible through independent ... of the CPLEX Optimizer for mathematical programming, the IBM ILOG CPLEX CP Optimizer for constraint ... optimization cplex optimizer name IBM ILOG CPLEX Optimizer home page Official http www.ibm.com software integration optimization cplex cp optimizer name IBM ILOG CPLEX CP Optimizer home page Official ... more details
Adaptive optimization is a technique in computer science that performs dynamic recompilation of portions of a computer program program based on the current execution profile. With a simple implementation, an adaptive optimizer may simply make a trade off between Just in time compilation and interpreting instructions. At another level, adaptive optimization may take advantage of local data conditions to optimize away branches and to use inline expansion to decrease context switch ing. Consider a hypothetical banking application that handles transactions one after another. These transactions may be checks, deposits, and a large number of more obscure transactions. When the program executes, the actual data may consist of clearing tens of thousands of checks without processing a single deposit and without processing a single check with a fraudulent account number. An adaptive optimizer would compile assembly code to optimize for this common case. If the system then started processing tens of thousands of deposits instead, the adaptive optimizer would recompile the assembly code to optimize the new common case. This optimization may include inlining code or moving error processing code to secondary cache. Deoptimization In some systems, notably the Java Virtual Machine , execution over a range of Java bytecode bytecode instructions can be provably reversed. This allows an adaptive optimizer to make risky assumptions about the code. In the above example, the optimizer may assume all transactions are checks and all account numbers are valid. When these assumptions prove incorrect, the adaptive optimizer can unwind to a valid state and then interpret the byte code instructions correctly. See also Java performance Adaptive optimization Adaptive optimization in Java External links http citeseer.ist.psu.edu arnold00adaptive.html CiteSeer for Adaptive Optimization in the Jalape o JVM 2000 by Matthew Arnold, Stephen Fink, David Grove, Michael Hind, Peter F. Sweeney. Contains li ... more details
Infobox Software name MOSEK developer MOSEK ApS latest release version 6.0 genre Operations Research , Optimization mathematics Mathematical optimization status Active license Proprietary software Proprietary website http www.mosek.com MOSEK website MOSEK ref http www.mosek.com index.php MOSEK Homepage ref is a software package for the solution of linear, mixed integer linear, quadratic, mixed integer quadratic, quadratically constraint, conic and convex nonlinear mathematical optimization problems. The emphasize in MOSEK is on solving large scale sparse problems. Particularly the interior point optimizer for linear and conic quadratic aka. Second order cone programming problems is very efficient. A special feature of the MOSEK interior point optimizer is that it is based on the so called homogeneous model which implies MOSEK can reliably detect a primal and or dual infeasible status as documented in several published papers. ref E. D. Andersen and Y. Ye. A computational study of the homogeneous algorithm for large scale convex optimization. Computational Optimization and Applications, 10 243 269, 1998 ref ref E. D. Andersen and K. D. Andersen. The MOSEK interior point optimizer for linear programming an implementation of the homogeneous algorithm.In H. Frenk, K. Roos, T. Terlaky, and S. Zhang, editors, High Performance Optimization, pages 197 232. Kluwer Academic Publishers, 2000 ref ref E. D. Andersen, C. Roos, and T. Terlaky. On implementing a primal dual interior point method for conic quadratic optimization. Math. Programming, 95 2 , February 2003 ref In addition to the interior point optimizer MOSEK includes Primal and dual simplex optimizer for linear problems. A primal network simplex optimizer for problems with special network structure. Mixed integer optimizer for linear, quadratic and conic problems. MOSEK provides interfaces to the C , C Sharp programming language C , Java programming language Java and Python programming language Python languages. Most m ... more details
CBO is a three letter abbreviation which may mean CBO FM , a CBC Radio One station in Ottawa , Ontario , Canada Central Boycott Office, a specialized agency of the Arab League based out of Damascus . See Arab economic boycott of Israel Chief Brand Officer Chief business officer Chief Business Officer Collateralized Bond Obligation , a type of Collateralized debt obligation Combined Bomber Offensive Community based organization Community Based Organization Confedera o Brasileira de Orienta o the Orienteering federation of Brasil Congressional Budget Office , United States American federal agency responsible for government budget calculations and analyses Cost Based Optimizer an Oracle performance feature. See related entry Query optimizer Query Optimizer Oracle Database feature Certified Building Official , International Code Council certification designation for Building Officials See also C Bo disambig DEFAULTSORT Cbo Category Broadcast call sign disambiguation pages de CBO fr CBO it CBO nl CBO pt CBO ... more details
IPstack Venturi Transport Protocol VTP is a patented proprietary protocol proprietary transport layer protocol that is designed to transparently replace Transmission Control Protocol TCP in order to overcome inefficiencies in the design of TCP related to wireless data transport. It is owned by Venturi Wireless . The protocol is employed by various wireless broadband internet service providers such as Verizon Wireless and Unwired Unwired calls the Venturi Client application that provides transparent VTP connectivity the Unwired Optimizer in order to speed up their network and to overcome lag latency issues. External links http www.venturiwireless.com solutions Vtechnology.html Venturi Wireless Solutions Broadband Services Optimization Technology http www.unwired.com.au support faq optimiser.php Unwired Optimizer FAQ US Patent 5883893 Category TCP IP Category Internet protocols Category Internet standards Category Transport layer protocols Category Wireless networking compu network stub Wireless stub ... more details
JAMP is a WAMP package that includes Apache httpd , MySQL and PHP . Infobox Software logo screenshot caption developer jayysoft gmail.com released initial release 2008 05 12 latest release version 0.0.1 latest release date release date 2008 05 12 operating system Win32 genre List of AMP packages AMP license GNU General Public License or proprietary EULA website http jayysoft.wordpress.com JayySoft Components Apache HTTP Server 2.2.8 PHP 5.2.5 MySQL 5.1.24 Subversion software SVN 1.4.6 phpMyAdmin 2.11.5.2 WordPress 2.5.1 TextCube 1.6.3 expansion PHP accelerator Zend Optimizer Zend Optimizer 3.3.3 Note The website appears not to be functional for downloads. Category WAMP software stub it Jamp ... more details
This is Lord Rayleigh 1842 1919 s autograph, from Oliver Heaviside Sage in Solitude ISBN 0 87942 238 6 , p. 38. This is a reproduction of a steel engraving originally published in The Electrician , 1893. It was scanned on an Epson Perfection 1250 at 400dpi, cleaned up some text was showing through the back in Photoshop, reduced to indexed grayscale, and saved as PNG using the Save for Web optimizer. PD ineligible Category Images of signatures Strutt, John William ... more details
This is William Henry Preece, from Oliver Heaviside Sage in Solitude ISBN 0 87942 238 6 , p. 60. The photograph is reprinted courtesy of the IEEE in London as stated in the credits in the back of the book, p. 318 , but its age implies that it s public domain. It must have been made in 1913 or earlier. It was scanned on an Epson Perfection 1250 at 400dpi, cleaned up some text was showing through the back in Photoshop, reduced to grayscale, and saved as JPG using the Save for Web optimizer. PD UK ... more details
This is John Perry, from Oliver Heaviside Sage in Solitude ISBN 0 87942 238 6 , p. 246. The photograph is reprinted courtesy of the IEEE in London as stated in the credits in the back of the book, p. 318 , but its age implies that it s public domain. It must have been made in 1920 or earlier. It was scanned on an Epson Perfection 1250 at 400dpi, cleaned up some text was showing through the back in Photoshop, reduced to grayscale, and saved as JPG using the Save for Web optimizer. PD UK ... more details
Context date October 2009 O Connell 2005, 5.10 defines this as t he percentage or fraction, whichever you choose of records in one file that will be joined with records of another file . This can be calculated when two database Table database tables are to be joined. It is primarily concerned with Query optimizer query optimisation . References O Connell, S. 2005 Advanced Databases Course Notes , Southampton, University of Southampton. Category Database algorithms comp sci stub ... more details
wiktionary white hat White hat may refer to White hat computer security , a computer hacker intending to improve security White hat search , a search engine optimizer White hat film , a hero character White hat, Scottish Rite 33rd degree 33rd degree Scottish Rite Mason White hat , Six Thinking Hats White hat Facts & Information orientation of thinking in terms of facts and information in psychology book Six Thinking Hats disambig ... more details
In various SQL implementations, a hint is an addition to the SQL standard that instructs the database engine on how to execute the query. For example, a hint may tell the engine to use as little memory as possible even if the query will run slowly , or to use or not use an index database index even if the query optimizer would decide otherwise. Different database engines use different approaches in implementing hints. MySQL uses its own extension to the SQL standard, where a table database table name may be followed by tt USE INDEX tt , tt FORCE INDEX tt or tt IGNORE INDEX tt keywords. ref MySQL 5.0 Reference Manual http dev.mysql.com doc refman 5.0 en index hints.html 12.2.8.2 Index Hint Syntax ref Oracle Database Oracle implements hints by using specially crafted SQL Other comment s in the query that begin with a tt tt symbol, thus not influencing SQL compatibility. ref Mike Ault http www.dba oracle.com t sql hints tuning.htm Oracle SQL Hints Tuning ref See also Query optimizer Query plan References reflist DEFAULTSORT Hint Sql Category SQL database stub ru SQL ... more details
In biology , BLOTTO is a blocking reagent made from nonfat dry milk , phosphate buffered saline , and sodium azide . Its name is an acronym of Bovine Lacto Transfer Technique Optimizer. It constitutes an inexpensive source of nonspecific protein milk casein which blocks protein binding sites in a variety of experimental paradigms, notably Southern blots, Western blots, and ELISA. Its use was first reported in 1984 by Johnson and Elder s lab at Scripps. Prior to 1984, partially purified proteins such as bovine serum albumin , ovalbumin , or gelatin from various species had been used as blocking reagents but had the disadvantage of being expensive. Category immunology immunology stub ... more details
DPO may refer to D.P.O. , a 1995 episode of The X Files Digital Phosphor Oscilloscope Direct public offering Detrended price oscillator Dayton Philharmonic Orchestra Dynamic positioning operator Devonport Airport s IATA code SCSI Read Commands Disable Page Out a SCSI bit Diplomatic Post Office Discontinued post office 2,5 Diphenyloxazole , an organic scintillator Days payables outstanding Days post ovulation , typically used in documenting the start of pregnancy or the onset of menstruation DPO, Display Power Optimizer technology from QuickLogic disambig de DPO it DPO ... more details
Orphan date February 2009 In relational databases , a condition or predicate in a query is said to be sargable if the DBMS engine can take advantage of an index database index to speed up the execution of the query using index seeks, not covering indexes . The term is derived from a contraction of Search ARGument Able . References SQL Performance Tuning by Peter Gulutzan, Trudy Pelzer Addison Wesley, 2002 ISBN 0 201 79169 2 http www.informit.com articles article.aspx?p 30247 Chapter 2, Simple Searches See also Query optimizer Category Database management systems database software stub ... more details
is not properly taking advantage of existing indexes see query optimizer . Query tuning main Query optimizer The query optimizer will not always choose the best query plan for a given query. In some databases the query plan can be reviewed, problems found, and then the query optimizer given hints on how ... by the optimizer. Some databases like Oracle provide a Plan table for query tuning. This plan table ... more details
X, and Solaris. Website http www.nusphere.com products phpexpress.htm Zend Optimizer Zend Optimizer ref cite web title Zend Optimizer url http files.zend.com help Zend Server zendoptimizerplus.html accessdate March 9, 2011 ref is a component of Zend Server and Zend Server Community Edition. Zend Optimizer .... Unlike Zend Optimizer, Zend Optimizer doesn t load files encoded by Zend Guard. Zend provides ... WinCacheForPhp Help and API documenation http www.php.net wincache Other software Zend Optimizer Despite the name, Zend Optimizer is not a code accelerator. Rather, is a free, closed source PHP extension ... title Zend Guard url http www.zend.com products guard optimizer accessdate September 28, 2009 ref . Website http www.zend.com products guard optimizer Category PHP programming language references ... more details
Unreferenced date December 2009 DASL Datapoint s Advanced Systems Language was a programming language and compiler proprietary to Datapoint. Primarily influenced by Pascal programming language Pascal with some C programming language C touches, it was created in the early 1980s by Gene Hughes . The compiler output was assembly language , which was typically processed through a peep hole optimizer before the assembly language Assembler assembler and linker computing linker . Reflecting its name, DASL was used for systems programming , mainly by the vendor itself. See also Distributed Application Specification Language also abbreviated as DASL DEFAULTSORT Dasl Programming Language Category Systems programming languages prog lang stub ms Bahasa pengaturcaraan DASL ... more details
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