Batch searching

Chukkapalli, G., C. Guda, and S. Subramaniam. 2004. SledgeHMMER A web server for batch searching the Pfam database. Nucleic Acids Res 32 W542 1. 

Pfam Batch Searches Sanger (http //www.sanger.ac.uk/Software/ Pfam/search.shtml)... 

The inverted search process, in conjunction with modern developments in computing, lends itself to on-line information retrieval. The librarian-information officer, or even the scientist himself, sits at a typewriter terminal connected, over telephone lines, to the computer. He explores the dictionary, establishes the search formulation, and then the computer searches for the references and prints them out before his eyes. In the USA this service is known as MEDLINE and is the main means of access to the MEDLARS data base. Various experimental services of this kind are in operation at European MEDLARS centres, but the relatively higher cost of telephone communication here makes it more expensive than batch searching. 

Klemenc, S., In common batch searching of Uhcit heroin samples—evaluation of data by chemometrics methods. Forensic Sci. Int., 115, 43-52 (2001). 

First batch-search service based on Chemical Titles file... 

The search method is identical for both MDARC databases. After the query is entered, the screen search is run by entering re . The results of the re search can be reviewed in MDARC, but normally they are immediately processed in the aa level, or atom by atom search. This part of the search often requires a batch search, which produces results the next morning, because of slow processing of re results. 

Batch Searching the search will be processed over-night, offline. 

The economies to be gained by searching many sub-structures at once, i.e. running batch searches, are great. They arise chiefly because the time needed to read the file of structures from the disk may be apportioned among the sub-structure queries. This time is larger than the time required by the iterative searching usually needed for searches, and thus the time needed to search for a batch of 10 sub-structures is no where near the... 

The batch search also contains the capacity to search by a specified molecular formula. This capability was not included in the on-line search because there was no requirement for it. 

Batch search output is printed off-line on a Versatec electrostatic dot matrix printer/plotter. It prints 100 dots per inch and uses 11 inch wide paper which is easily incorporated into reports. 

Producers. The producers of databases are sometimes called database publishers because they make pubHc their databases. Some producers pubhsh hardcopy counterparts to databases and so are pubHshers in the traditional sense others pubHsh data only in electronic form. Database producers are responsible both for the deterrnination of content and for database production. Most producers offer their databases for lease or Hcense to private organisations or database vendors. Vendors offer database search services to the marketplace on a fee basis. An increasing number of producer/vendors such as Mead Data Central, U.S. National Library of Medicine, and DRI/McGraw-HiU. (formerly Data Resources), offer search services (batch or online) from their own databases as well as from the databases of other products. 

Vendors. Database vendors provide value added processing of databases and offer search services, online and/or batch, or distribute CD-ROM products to database users. Vendors also provide the technology for accessing databases. 

For a fixed molar ratio (ns/riAh equal to 0.05887, the temperature as applied in experiment E4, and a batch time of 347.8 dimensionless units, the feed rate of B (and thus the feed time) was optimized by computation to find tj = 323.19 dimensionless units. A run was carried out at these conditions. The data collected from this experiment were then used for re-estimation of the kinetic parameters. The new kinetic model was used to evaluate the new optimum feed rate for the same total amount of B. The optimum batch time reduced to 275.36 and the feed time to 242.75 units. Table 5.4-19 summarizes the results for three successive optimizations and re-estimations. Evidently, even a very simplified kinetic model can be successfully used in search for an optimum provided that kinetic parameters are updated based on every subsequent run carried out at the optimum conditions evaluated from the preceding set of kinetic parameters. 

The third type of methods treats time in an exact manner by allowing it to vary in search of a true optimum. Worthy of mention at this stage is that none of the graphical techniques bears this crucial capability in batch chemical plants. Ultimately, mainly mathematical techniques are used in order to treat time exactly. This assertion is further justified later in this textbook when graphical techniques are compared to mathematical techniques using a typical problem. 

Constraint (3.8) reduces the search space by ensuring that the time at which a state s can be processed in unit j at time point p is at least after the sum of the durations of all previous tasks that have taken place in the unit. Constraint (3.9) ensures that the processing of state Sin into unit j can only take place after the previous batch has been processed. Constraint (3.10) stipulates that state sin can only be processed in unit j after it has been produced from unit j, where units j and / are consecutive stages in the recipe. 

Global-MMX (GMMX) is a steric energy minimization program that uses the MMX force field and operates in batch mode. Its main purpose is to search conformational space and to fist the lowest-energy unique conformations found. It is available in desktop PC running Windows, Macintosh OS, and Unix-based workstation versions. 

In addition to these selection criteria, the limitations of the author s contacts and the willingness of companies to participate, narrowed the search for a suitable case down to a small Dutch company (< 30 people). This company produces in batches, falls under the Dutch Seveso-II directive (BRZO, 1999) and authorized access to the relevant data. The selected company had experienced some serious accidents recently, in spite of using many technical safety systems. Thus the management was aware of the necessity to enhance both safety and the reliability of the operational process. 

The selection criteria for the case studies are taken from Chapter 5, i.e. presence of hazardous substances, batch industry, large company, located in The Netherlands. The selection criteria narrowed the search for suitable cases down to large Dutch companies in the batch industry falling under the Dutch Seveso-II directive (BRZO, 1999). To increase the generalizability to Dutch chemical companies in the batch industry, from the around 80 selected companies falling under the previous selection criteria, different companies and different product types were selected. 

Performance of tabu search on a five-batch sequencing problem... 

Numerous compositions were explored, starting with the Monsavon bar. Once a composition was selected, a batch would be made at pilot scale ( 15 kg) to produce prototype bars, and a set of attributes would be assessed. Based on the results, additional compositions would be proposed, some identified through scientific intuition, others through a comprehensive search of compositional possibilities. 

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