Apress big data analytics with spark a practitioners guide to using spark for large scale data analysis

... Building Websites with TYPO3 A practical guide to getting your TYPO3 website up and running fast Michael Peacock BIRMINGHAM - MUMBAI Building Websites with TYPO3 A practical guide to getting ... Proofreader Chris Smith Layouts and Illustrations Shantanu Zagade Ved Prakash Jha Cover Designer Editorial Manager Dipali Chittar Shantanu Zagade Ab...

Ngày tải lên: 03/06/2014, 01:32

... matter Page iv Friday, June 23, 2000 1: 36 PM Library of Congress Cataloging-in-Publication Data Broadwell, Mike A practical guide to particle counting for drinking water treatment/ Mike Broadwell ... Chapter A B C D E F Applications for Drinking Water Treatment Why Use Particle Counters for Drinking Water Treatment? 15 Cryptosporidium and Giardia 16...

Ngày tải lên: 18/06/2014, 19:20

... LLC L1306/frame/pt01 Page 28 Friday, June 23 , 20 00 1:45 PM 28 A PRACTICAL GUIDE TO PARTICLE COUNTING manufacturers of packaged treatment plants employ particle counters as a standard part of their ... L1306/frame/pt01 Page 16 Friday, June 23 , 20 00 1:45 PM 16 A PRACTICAL GUIDE TO PARTICLE COUNTING At the most basic level, particle counters could not be...

Ngày tải lên: 18/06/2014, 19:20

... several plants that can pool resources to develop a specialist in this area How many particle counters are required to make in-house calibration a practical alternative? That is difficult to say, ... L 130 6/frame/pt01 Page 38 Friday, June 23, 2000 1:46 PM 38 A PRACTICAL GUIDE TO PARTICLE COUNTING sure the flow has not changed It is important to remember that low-c...

Ngày tải lên: 18/06/2014, 19:20

... provide a framework for developing a useful and practical approach to particle counting that can be tailored to the capabilities and resources of the individual drinking water treatment plant None ... Other Plant Data To relate the particle counter to overall plant performance, trend it together with other plant data Turbidity, headloss, and any other data that rel...

Ngày tải lên: 18/06/2014, 19:20

... As touched on above, grab-sampler data handling is a cumbersome task Any number of approaches are available for organizing grab-sample data, and this makes a standardized approach difficult Hence, ... case of online particle counting, trending the grab-sample data with other plant parameters will add to its value If these data are available in a usable file format that can be impor...

Ngày tải lên: 18/06/2014, 19:20

... that a particle can be “reliably” detected and measured if it produces a signal with a minimum to signal -to- noise ratio B SIGNAL -TO- NOISE RATIO All electronic instruments are subject to various forms ... SPECIFICATIONS Figure 6. 2 77 Pulse signal -to- noise measurement As mentioned is Section A, the smallest particle that can be reliably measured must produce a signal am...

Ngày tải lên: 18/06/2014, 19:20

... L1306/frame/pt02 Page 82 Friday, June 23, 2000 1:54 PM 82 A PRACTICAL GUIDE TO PARTICLE COUNTING Sensor Cover Flow Cell Channel Power Regulator Signal Amplification Board Laser Driver Flow ... imperfections as far as optical quality is concerned It is a softer material than sapphire, and thus can be bored and polished to create the single window piece This softness accounts f...

Ngày tải lên: 18/06/2014, 19:20

... a voltage comparator input stage The more complex approach involves analog -to- digital (A/ D) conversion Voltage Comparator A comparator is simply a small circuit that “compares” an input signal ... in drinking water treatment The PHA is used to provide a histogram of all the particles in a given volume of water A “histogram” is a sort of graphical history of the part...

Ngày tải lên: 18/06/2014, 19:20

... L1306/frame/pt02 Page 94 Friday, June 23, 2000 1:54 PM 94 A PRACTICAL GUIDE TO PARTICLE COUNTING If a to 20 mA signal drops below mA, there is obviously a problem with the particle counter or cabling ... backwash valve, and can signal the particle counter system when the filter is placed into backwash This provides a way for the data to be properly labeled without...

Ngày tải lên: 18/06/2014, 19:20

... “translating” the data into usable form Many laypeople are confused by the distinction between the industry standard signal formats (RS-485 and RS-232) and the nonstandard protocols To make an analogy, ... into a format compatible with the SCADA software © 2001 by CRC Press LLC L1306/frame/pt02 Page 104 Friday, June 23, 2000 1:55 PM 104 A PRACTICAL GUIDE TO PARTICLE COUNTING...

Ngày tải lên: 18/06/2014, 19:20

... small-scale distribution of large amounts of data Some can only be recorded once, unlike magnetic disks, and are not as practical for day -to- day data backup, although they may be used for long-term ... proprietary formats, providing storage capacities up to a gigabyte or more They are most useful for manual data backup and transport Data can be accessed more quickly than from a...

Ngày tải lên: 18/06/2014, 19:20

... L1306/frame/pt02 Page 122 Friday, June 23, 2000 1:55 PM 122 A PRACTICAL GUIDE TO PARTICLE COUNTING to another site with relative ease Large plants preparing to install a lot of particle counters at ... that data be easily accessible File structure should allow data to be imported directly into database or spreadsheet programs The historical data should be available fo...

Ngày tải lên: 18/06/2014, 19:20

... Pressurized Batch Samplers The larger pressurized batch samplers are rarely purchased for water treatment applications now that the much less expensive portable units are available Several of them are ... Software Grab-sampling software may be used to upload configuration parameters as well as to download the data collected by the grab sampler The most that can be expected from the s...

Ngày tải lên: 18/06/2014, 19:20