electronic nose data acquisition for food odor measurement

Ngày tải lên: 29/06/2014, 11:20

... = 0.18fS /2 for a Butterworth Filter fCUT-OFF = 0.11fS /2 for a Bessel Filter fCUT-OFF = 0.21fS /2 for a Chebyshev Filter with 0.5dB ripple in the pass band fCUT-OFF = 0.26fS /2 for a Chebyshev ... filter should perform with a “brick wall” style of response, where the transition band is designed to be as small as possible Practically speaking, this may not be the best approach for an anti-aliasing ... degrees, and ω is in radians The transfer function for the Bessel filter is: VOUT/VIN = G/(a0 + a1s + a2s2+ an-1sn-1 + sn) The denominator coefficients for a Bessel filter are given in Table Although...

Ngày tải lên: 11/01/2016, 11:32

... room temperature Food Wastes Artificial food waste was used to keep its properties constant The composition of artificial food waste was determined based on a typical composition of food waste from ... oxygen for the solubilization of food waste The circulating water did not contain oxygen when aeration was not carried out in the circulation tank Therefore, oxygen would be deficient for the ... oxygen was supplied in Run than in Run for the biodegradation of SS, DO was not detected just after feeding food waste while DO concentrations just before feeding food waste were less than mg/l On...

Ngày tải lên: 05/09/2013, 08:40

... waiting for a response Next, it is necessary to send a set of digits for user ID (optional) and wait for a response Entering a set of digits for user authentication (optional) and waiting for a ... testbed for measuring the call setup performance of IP-PSTN GWs E, Ethernet link; T1, CAS or PRI link; BRI, basic rate interface links NTS stands for network time server; it provides timing information ... Note: arSentEvent(1) is reused here for generic response time measurement* dialPIN ¼ "8935258221#" ’*** for type A GW only dialTone_det_window ¼ 15 ’*** set to 15 for 15 milliseconds window after_dialTone...

Ngày tải lên: 30/09/2013, 07:20

... or for that matter, one “best research design” approach for customer satisfaction measurement In the end, the cost versus the value of the information should dictate CSM form and function for ... less a concern than it is for mail or electronic surveys (ASQ Quality Management Division, 1999) Like in-person methods, quality for both quantitative and qualitative data (comments) is very high ... both for mail surveys (Dillman, 1978) and electronic survey methods Electronic surveys are probably the easiest to administer and also the lowest in total cost (even when making additional efforts...

Ngày tải lên: 18/10/2013, 12:15

... Documentation For more information, see these Oracle resources: I Oracle Database Installation Guide for Windows I Oracle Database Release Notes for Windows I Oracle Database Platform Guide for Windows ... usage information for Oracle Data Provider for NET Oracle Data Provider for NET is an implementation of the Microsoft ADO.NET interface This document describes the features of Oracle Database for ... Oracle Data Provider for NET: I New Features in Oracle Data Provider for NET Release 10.1 I New Features in Oracle Data Provider for NET Release 9.2.0.4 xxvii New Features in Oracle Data Provider for...

Ngày tải lên: 18/10/2013, 17:15

... same for problem #2 but this time change n to 8, then the equation that need to be solved is ∴ 0.007071 = 16 ⎛ f ⎞ 1+ ⎜ ⎟ ⎝ 1000 ⎠ solve the above equation for f and get f = 1857.0 Hz Therefore, ... (TDM MUX) module is used to recombine two analog signals into one data stream The input A is connected to the OUT connector for a period T (T = 1/fs) During the next period, input B is connected ... “Sampled” at a rate equal to ½ fs as set by the Master clock NOTE: The actual waveform sampling rate = ½ fs as set by the DATA/ Sampling RATE”, output, mentioned above (e.g to sample a 1kHz cosine,...

Ngày tải lên: 23/10/2013, 15:15

... Transformations and Difficulties—Variables, Data, and Information Much of this discussion has pivoted on information—information in a data set, information content of various scales, and transforming ... transforming information The concept of information is crucial to data mining It is the very substance enfolded within a data set for which the data set is being mined It is the reason to prepare the data ... the data set for mining—to best expose the information contained in it to the mining tool Indeed, the whole purpose for mining data is to transform the information content of a data set that...

Ngày tải lên: 24/10/2013, 19:15

... execution data is in its “raw” form, and the model works only with prepared data, it is necessary to transform the execution data in the same way that the training and test data were transformed ... Determining data structure Building the PIE Surveying the data Modeling the data 3.3.1 Stage 1: Accessing the Data The starting point for any data preparation project is to locate the data This ... data preparation requires three such steps: data discovery, data characterization, and data set assembly • Data discovery consists of discovering and actually locating the data to be used • Data...

Ngày tải lên: 24/10/2013, 19:15

... original information This additional information actually forms another data stream and enriches the original data Enrichment is the process of adding external data to the data set Note that data enhancement ... example of enhancing the data No external data is added, but the existing data is restructured to be more useful in a particular situation Another form of data enhancement is data multiplication When ... original data set The data preparation software creates this variable and captures information about the missing value patterns For each pattern of missing values in the data set, the data preparation...

Ngày tải lên: 29/10/2013, 02:15

... numerating the alphas, but also for conducting the data survey and for addressing various problems and issues in data mining Becoming comfortable with the concept of data existing in state space ... However, what a data miner starts with as a source data set is almost always a sample and not the population When preparing variables, we cannot be sure that the original data is bias free Fortunately, ... of the original data sample Random sampling does that If the original data set represents a biased sample, that is evaluated partly in the data assay (Chapter 4), again when the data set itself...

Ngày tải lên: 29/10/2013, 02:15

... 0.8769 Forward 0.4940 0.4923 Please purchase PDF Split-Merge on www.verypdf.com to remove this watermark Forward 0.6988 0.7692 Forward 0.4940 0.4462 Forward 0.6988 0.7538 Forward 0.4940 0.3231 Forward ... Zalapski Forward 37 Patrick Poulin Reserve 55 Igor Ulanov Forward 26 Martin Rucinsky Defense 43 Patrice Brisebois Forward 28 Marc Bureau Forward 27 Shayne Corson Defense 52 Craig Rivet Forward ... distance from there to each of the nearest data points in each dimension The mean distance to neighboring data points serves as a surrogate measurement for density For many purposes this is a more convenient...

Ngày tải lên: 08/11/2013, 02:15

... Translating the information discovered there into insights about the data, and the objects the data represents, forms an important part of the data survey in addition to its use in data preparation ... with putting data into the multitable structures called “normal form” in a database, data warehouse, or other data repository.) During the process of manipulation, as well as exposing information, ... number of sample data sets During training, there is one data set for building the PIE, one (probably the same one) for building a model, and one (definitely a separate one) for testing the model...

Ngày tải lên: 08/11/2013, 02:15

... least harm to the information content of the data set Yet it still leaves some information exposed for the mining tools to use when values outside those within the sample data set are encountered ... are somehow regularized For instance, one such tool for a particular data set could, when fine-tuned and adjusted, just as well with unprepared data as with prepared data The difference was that ... work.) Third, and very important for maximum information exposure, the individual variable distributions are transformed This transformation makes the between-variable information far more accessible...

Ngày tải lên: 08/11/2013, 02:15

... be given in a desired report form The proposed system is given in Fig.3 Fig Proposed automatic data acquisition system Fig Drainage volume measuring using camera 3.1 Measurement of drainage volume ... displacement measurement Fig 12 Experiment result of pressure measurement CONCLUSION This paper introduced mainly the design and control methods of the measurement equipment using for the triaxial ... examiner; results recorded by measurement equipment On the whole, these results are quite suitable With displacement measurement, the graph of the results recorded by measurement equipment is quite...

Ngày tải lên: 10/12/2013, 06:15

... Practical Data Acquisition for Instrumentation and Control Systems Titles in the series Practical Cleanrooms: Technologies and Facilities (David Conway) Practical Data Acquisition for Instrumentation ... used platform for data acquisition and control The main reasons for the popularity of PC-based technology are low costs, flexibility and ease of use, and, last but not the least, performance ... the PCMCIA card as applied to data acquisition systems Contents Preface xvii Introduction 1.1 1.2 Definition of data acquisition and control Fundamentals of data acquisition 1.2.1 1.2.2 1.2.3...

Ngày tải lên: 12/12/2013, 20:29

... Series Data Series data differs from the forms of data so far discussed mainly in the way in which the data enfolds the information The main difference is that the ordering of the data carries information ... technique Figure 9.11 Waterforms and their correlograms 9.4 Modeling Series Data Given these tools for describing series data, how they help with preparing the data for modeling? There are two ... real-world data it is often very much harder, impossible even, to determine if apparent trend is an artifact of the data or real There is no substitute for looking at the data in the form of data plots,...

Ngày tải lên: 15/12/2013, 13:15

... transform accomplishes this The second transform subtracts the mean of the transformed variable from each transformed value, and divides the result by the standard deviation The formula for this ... transform accomplishes this The second transform subtracts the mean of the transformed variable from each transformed value, and divides the result by the standard deviation The formula for this ... uniform spectrum and uniformly low autocorrelation at all lags There still might be useful information contained in the waveform, but the chance is small This is a good sign that extra effort...

Ngày tải lên: 15/12/2013, 13:15

... than data preparation? Data preparation concentrates on transforming and adjusting variables’ values to ensure maximum information exposure Data surveying concentrates on examining a prepared data ... to reduce the back-propagated error The formula for this arrangement of weights is exactly the formula for a straight line: yn x a0 + bnxn So, given this formula, exactly what effect does adjusting ... information in the full data set is quickly compressed for modeling Compression, if practicable, reduces an intractable data set and puts it into tractable form The compressed data can be modeled...

Ngày tải lên: 15/12/2013, 13:15