chapter 16  tools for mysql users

... squid 0.4 0:00 mysqld 0.4 0:00 mysqld 0.4 0:00 mysqld This starts with overall information about the system and then displays the most active processes at the given moment So, for example, if ... swapped out) There are many other things GTop can for you—please refer to its manpage for more information We are going to use this module in our performance tuning tips later in this chapter, so ... filesystem and formats it for playback using HTTP::WebTest or HTTP::Monkeywrench This is useful when writ- ing acceptance and regression tests Many other benchmark utilities are available both for free...

Ngày tải lên: 26/01/2014, 07:20

... imported when we use Apache:: File Refer to the Apache::File manpage for more information 530 | Chapter 16: HTTP Headers for Optimal Performance This is the Title of the Book, eMatter Edition Copyright ... introduced with HTTP/1.1 Unfortunately it is not yet widely supported Probably the most popular usage scenario for content negotiation is language negotiation for multilingual sites Users specify in their ... nature (as in a “form page for submittal”) and the creator of the page wants to make sure that the page does not get submitted twice 540 | Chapter 16: HTTP Headers for Optimal Performance This is...

Ngày tải lên: 26/01/2014, 07:20

... sensors designed for the same purpose ARTI employs nylon twist-lock fittings for smooth internal flow passages designed to prevent particle buildup All of the sample fittings are designed for 1/4 inch ... sensors for drinking water application Each employs a standard aluminum flow cell housing with a monolithic fused silica flow cell with an antireflective coating The WPC 2000 is designed for µm sensitivity, ... connected to these fittings IBR uses threaded stainless steel fittings designed for higher pressures This sensor was designed for other applications requiring pressures higher than those found in drinking...

Ngày tải lên: 18/06/2014, 19:20

... be a minimum of 42 in above the top of the platform or the point of access at the top of the ladder Provisions must be made for access to the platform or any other point of access Wells must completely ... loaded beyond the maximum intended load for which they were built nor beyond their manufacturer’s rated capacity Ladders must be used only for the purpose for which they were designed Non-self-supporting ... be used for climbing unless the ladders are designed and provided with steps for climbing on both front and rear sections Ladders must be periodically inspected by a competent person for visible...

Ngày tải lên: 18/06/2014, 22:20

... more time and effort to break up the work, and show someone how to assist than it would have taken to just the work Schedule slips associated with engineering tasks are therefore very difficult ... preference for working in their own field sometimes avoid projects because they not at all enjoy doing other work To many engineers, this other work seems to be a waste of their time and skills And, for ... resources for projects, often even as project managers If the engineer has both the skill and the interest to manage projects, using him as a project manager is a very good idea Before this is...

Ngày tải lên: 01/07/2014, 23:20

... discharged, for instance when switching off was forgotten, it must be charged with the nominal current I10 for 20 to 24 hours Keep contacts of the set clean! Whenever the cells are not used for a longer ... quality, the appliance’s designer must give advice for the best battery system and name economic alternatives for this The problem for the designer therefore is as follows: The battery must be big ... battery capacity; for current spikes the capacity estimate is raised by to 10% If for instance an electronic memory bank with a continuous power consumption of mA must be protected for at least months,...

Ngày tải lên: 05/07/2014, 07:20

... in the row for 10 degrees of freedom and the column headed 0.01, 2.764 (c) t0.025,17 is in the row for 17 degrees of freedom and the 0.025 column, 2.110 (d) t0.005,100 is in the row for 100 degrees ... procedure for finding an interval estimate for a population measure as taking a sample result and adding and subtracting an error This error reflects the uncertainties involved in using sample information ... significance to use you can obtain the critical value by looking for the appropriate values of ␣ (for a one-tail test) or ␣/2 (for a two-tail test) in the body of Table on pages 621–622 and finding...

Ngày tải lên: 06/07/2014, 00:20

... sample sent before taking the aliquot for assay In light of this, one wonders what is really implied in basing a risk assessment for 2,3,7,8-TCDD on the upper 95 percent confidence limit for the mean ... extracted from this container for assay by the laboratory according to the accepted assay protocol The weight of the aliquot is 30 grams for organics and five (5) grams for metals (see Figure 1.2) ... approved analytical method for metals that requires a sample of less than 0.1 gram for microwave digestion Methods currently pending approval employing autoextractors for organic analytes require...

Ngày tải lên: 11/08/2014, 10:22

... functional form Techniques useful for judging the lack of utility of a functional form are discussed later in this chapter Some of the functional forms that traditionally have been found useful for ... S Lilliefors test corrects for the fact that F(X) is not really known a priori Dallal and Wilkinson (1986) give an analytic approximation to find probability values for Lilliefors test For P< ... are presented for ν = to ν = 30 degrees of freedom and for probability values ranging from 0.90 to 0.9995 Many tables equivalently table 0.10 to 0.0005 for − F(tν ) See Table 2.2 for some example...

Ngày tải lên: 11/08/2014, 10:22

... log-normal model provides a reasonable model for the data distribution This is fortuitous, for we recall from the discussion of confidence intervals that for a log-normal distribution, half of the ... and most discussions of this test (e.g., Conover, 1998) offer formulae for large sample corrections for ties It is our feeling that for these cases, too, bootstrap alternatives are preferable A ... calculated we sum the ranks separately for each sample For example, the mean rank for the ith sample, Ri, is given by: Ki R i = Ki ∑ rj [3.35] j=1 The values of the Ri’s for our example groups are given...

Ngày tải lên: 11/08/2014, 10:22

... critical values of r for samples ranging from to 50 For sample sizes greater than 50, we can calculate the Z transformation of r as: 1 + r Z = ln  -2  – r [4.3] For large samples, Z ... critical values for the Spearman rank correlation coefficient are the same as those for the Pearson coefficient and are also given in Table 4.1, for sample sizes of 50 and less For samples greater ... calculated for any value ˆ of x A confidence interval for a single y observation for a given y value is shown in Panel of Example 4.1 This is called the prediction interval A confidence ˆ interval for...

Ngày tải lên: 11/08/2014, 10:22

... normal distribution for the log-transformed concentration We then make a guess as to the correct values for µ and σ Once we have made this guess we can calculate a likelihood for each observed ... statistics for the complete exponentially transformed Y data from Example 5.1 (column 1), using the usual estimators: Mean = 1.2475 SD = 1.4881 • Summary statistics for the exponentially transformed ... 20-observation random sample For the case of 75% censoring the estimated value for µ is quite a bit lower than the sample value of − 0.3029 and the estimated value for σ is also a good bit higher...

Ngày tải lên: 11/08/2014, 10:22

... semi-variograms are distributed as one for the uniform transformed data, four for the indicator variables and four cross semi-variograms between the uniform transform and each of the indicator variables ... different from that being estimated and therefore does not make full use of the available information The additional information provided by the indicators for the “secondary” thresholds can be taken ... coregionalization This simply means that the semi-variogram structures for an indicator variable, that for the uniform transform and their cross semi-variogram must be consonant with each other...

Ngày tải lên: 11/08/2014, 10:22

... covariance of ( z j–k a) j vanishes when j is greater than k Therefore, for an AR process of order p, values of φ kk will be zero for k greater than p Estimates of φ kk may be obtained from the ... and a natural logarithmic transformation is applied to the data prior to initiating the analysis Figure 8.5 presents the autocorrelation function for the log-transform series, zt Note that the ... 0.071, and θ 15 = -0.79 This model provides a means of predicting, or forecasting, hourly values of PM10 concentration Forecasts for the median hourly PM10 concentration and their 95 percent confidence...

Ngày tải lên: 11/08/2014, 10:22

... attribute before using the build and ungenerate commands on the coverage It also used the frequency file to create a file containing the date for each shoreline It created formatted text files for the ... standalone application to improve users ability to perform spatial queries and to compile regional statistics and trends The database forms, reports, and macros were set up for an interactive display; ... established a relate in the workspace for the next step After joining the area files to the transect attribute table for that area, the AML brought the related information and arcs to a new appended...

Ngày tải lên: 11/08/2014, 12:21

... geographic data formats (Lowe, 2002b) Why are there so many geographic data formats? One reason is that a single format is not appropriate for all applications For example, a single format cannot ... base, information-technology platform, and customers VSAT does not use GIS or hydraulic modeling However, the information obtained from GIS and modeling can be used to run the VSAT program For example, ... and vital interactions necessary for the well-being of communities GIS is critical to this effort because it integrates all types of information and relates that information spatially GIS can help...

Ngày tải lên: 11/08/2014, 13:22

... Quality As for many other parts of the world, various biotic indices exist for U.K rivers which integrate score measures of abundance of the benthic invertebrates taken by kick sample For northeast ... estuarine environment for several decades Predicting the future behavior of this coupled human-ecological system will therefore be challenging, but success would provide a model for many similarly ... health of the ecosystem using a number of indicators and explore the potential for different policy instruments for restoring ecosystem health in this system 16.1.1 The Physical Context The Ythan...

Ngày tải lên: 11/08/2014, 13:22

... the danger of a failure, and the residual performance level This information directly influences possible strategies for improving the environmental performance of the life cycle considered here ... expressing the performance conditions that regulate the behaviors; nvs is the total number of performance conditions for s-th behavior, generally consisting of functions linking performance conditions ... examination, both for the effect of its failure on the system and for the decrease in performance level, quantified by the dynamic criticality factor The distribution of the values assumed by BCI for each...

Ngày tải lên: 11/08/2014, 21:21