technology of the flexible foam preparation

... cause collapse of the foam as the walls and ribs of the foam cells could not support the pressure of the gas C Technology of the Flexible Foam Preparation Flexible foams have their flexibility ... weights of the polyol, isocyanate and chain extender, respectively Setting the number of moles of the polyol, npol, to be 1, r becomes the number of moles of the chain extender Number of moles of the ... from the expression: %NCO ¼ ½ðB À SÞN  4:202Š=W ð37Þ where B is the number of ml of HCl used for titration of the blank, S is the number of ml of HCl used for titration of the sample, N is the...

Ngày tải lên: 13/08/2014, 16:21

... words Another problem that often arises is that of the communication of the results of computer simulation experiment to other members of a community Quite often the necessary description of the technical ... is the primary focus of this paper and form the mathematical point of view mention of the Boltzmann transport equation for the distribution function of some stochastic process is of interest The ... consisting of a very large number of similarly prepared systems; and is given by the fraction of systems in the ensemble which are characterized by the occurrence of the specific event Therefore, the...

Ngày tải lên: 29/06/2014, 13:20

... taking the DFT The window makes the peaks look the same and reduces the tails, but broadens the peaks Chapter 9- Applications of the DFT 175 This is also good Third, the window reduces the resolution ... know the value of two parameters: M and fc These are found from the relations: M ' N & , and fc ' s/N , where N is the length of the DFT being used, and s is the number of samples you want on the ... calculate the other The relationship between the impulse response and the frequency response is one of the foundations of signal processing: A system's frequency response is the Fourier Transform of...

Ngày tải lên: 13/09/2012, 09:49

Ngày tải lên: 17/09/2012, 09:13

... concise summary of the present state of the art of the theory and practice of OFDM technology The authors believe that the time is ripe for such a treatment Particularly based on one of the author's ... held for the duration of the next symbol The signals in the two tuned circuits are then processed to determine their phase difference, and therefore the transmitted information The older of the two ... solved by the use of a cyclic prefix Another issue is how to transmit the sequence of complex numbers from the output of the inverse FFT over the channel The process is straightforward if the signal...

Ngày tải lên: 02/03/2013, 16:58

... Introduction Rationale (reasons of the study) .3 Aims of the study .3 Scope of the study Methods of the study Part II: Development Chapter 1: Theoretical background ... named the things and occurrences around making use of vocal sounds for the purpose of communication After that they showed the vocal sounds and sets of vocal sounds in written signals Because of these ... making them aware of the morpheme that builds the words will help them solve these difficulties It also has many positive effects on their vocabulary growth Children who have good awareness of morpheme...

Ngày tải lên: 08/04/2013, 09:31

... assessment of the state of the art and forecasts of technology growth over the next 10 years The details of that assessment are contained in the Appendix We hope that our recommendations to the Army ... motions for the performance of a variety of tasks The main components of a robot are • • • the mechanical manipulator, which is a set of links that determine the work envelope of the robot and the ability ... of these, strictly speaking, is part of the robot itself This chapter is a summary of the detailed report on the state of the art and predictions for AI and robotics technology contained in the...

Ngày tải lên: 13/12/2013, 01:15

... in the expectation that a wellsuited transformation will facilitate the reading, i.e., the analysis of the relevant information Of course, the choice of the transform depends on the nature of the ... reviews the fundamentals of the wavelet theory: We discuss the timefrequency resolution of the wavelet transform and compare it to the common shorttime Fourier transform The multiscale property of the ... of keeping the size of the window xed and lling it with oscillations of different frequencies, he tried the reverse: He kept the number of oscillations within the window constant and varied the...

Ngày tải lên: 25/12/2013, 05:17

... two of the four possible quadrants in the iv plane In the other two quadrants, the product of voltage and current (i.e., power) is negative, and an i-v curve with a portion in either of these ... proportional to position The actual construction of the potentiometer is in the shape of a circle the figure depicts the potentiometer resistor as a straight line for simplicity The range of the potentiometer ... the positive terminal of an element, then the power dissipated is positive (i.e., the element absorbs power); if the current leaves the positive terminal of an element, then the power dissipated...

Ngày tải lên: 19/01/2014, 19:20

... amount of fuel and the correct timing of the spark to result in the cleanest combustion possible under the circumstances The measurement of the aforementioned variables falls under the heading of ... problems; the numerical solution is provided at the very end of the analysis Each problem closes with comments summarizing the findings and tying the example to other sections of the book The solution ... convention the direction of positive current flow out of a voltage source is out of the positive terminal The notion of an ideal voltage source is best appreciated within the context of the source-load...

Ngày tải lên: 19/01/2014, 19:20

... in the expectation that a wellsuited transformation will facilitate the reading, i.e., the analysis of the relevant information Of course, the choice of the transform depends on the nature of the ... reviews the fundamentals of the wavelet theory: We discuss the timefrequency resolution of the wavelet transform and compare it to the common shorttime Fourier transform The multiscale property of the ... of keeping the size of the window xed and lling it with oscillations of different frequencies, he tried the reverse: He kept the number of oscillations within the window constant and varied the...

Ngày tải lên: 19/01/2014, 19:20

... two of the four possible quadrants in the iv plane In the other two quadrants, the product of voltage and current (i.e., power) is negative, and an i-v curve with a portion in either of these ... proportional to position The actual construction of the potentiometer is in the shape of a circle the figure depicts the potentiometer resistor as a straight line for simplicity The range of the potentiometer ... the positive terminal of an element, then the power dissipated is positive (i.e., the element absorbs power); if the current leaves the positive terminal of an element, then the power dissipated...

Ngày tải lên: 19/01/2014, 20:20

... amount of fuel and the correct timing of the spark to result in the cleanest combustion possible under the circumstances The measurement of the aforementioned variables falls under the heading of ... problems; the numerical solution is provided at the very end of the analysis Each problem closes with comments summarizing the findings and tying the example to other sections of the book The solution ... convention the direction of positive current flow out of a voltage source is out of the positive terminal The notion of an ideal voltage source is best appreciated within the context of the source-load...

Ngày tải lên: 19/01/2014, 20:20

... roughly independent of each other Yet, depending on the policy and skills of the individual manager, e.g., advertising efforts, the effect of the factors on the cash flow of specific retail outlets ... etc.; the most prominent example is Christmas time The factor in the bottom row, on the other hand, reflects the slower seasonal variation, with the effect of the summer holidays clearly visible The ... series separately, the prediction of the ICs is more accurately performed and the results also are different from the direct prediction of the original time series The noise in the time series is...

Ngày tải lên: 20/01/2014, 11:20

... as indications of the likelihood of receiving the money owed to them in accordance with the terms on which they invested The agency’s credit ratings cover the global spectrum of corporate, sovereign ... accordance with the terms of the obligation’s documentation during the life of the transaction, but where no payment default in accordance with the terms of the documentation is imminent, the obligation ... payments are interrupted, due to either the failure of the insurer or some form of regulatory intervention In the context of the IFS Rating, the timeliness of payments is considered relative...

Ngày tải lên: 16/02/2014, 03:20

... with their target protein, either directly or after being metabolized in the tissue or organism to form reactive products One of the drawbacks of COFRADIC relates to the segmentation of the peptide ... limitations of the technology; however, it is very well compensated by the efficiency of the other steps in the system: limited losses during consecutive chromatographic separations, more freedom in the ... out of the primary interval of nonglycosylated peptides and are thereby isolated Importantly, the shift evoked in this way can be both hydrophilic and hydrophobic, reflecting the nature of the...

Ngày tải lên: 18/02/2014, 16:20

... called “clumps” and these clusters were called “B-clumps.” APPLICATIONS OF THE THEORY OF CLUMPS ing, not for the absence of 0's in the top left section, but for the absence of 1's in the top right ... some way Instead of taking all the clusters generated by the keywords concerned, APPLICATIONS OF THE THEORY OF CLUMPS we could try taking the intersection of the sets generated by the keywords, ... choice of the pieces we take out of the existing classifications, but the use that we are going to make of them is such that the particular details are not important, and so the problem of whether...

Ngày tải lên: 19/02/2014, 19:20

... asking the participants how much time they must spend on the games Instead, they were told that they would be rewarded if they were ranked high in the Hall of Fame Table shows the numbers of participants ... taught students of the experimental group and showed them how to play the games in class hours before the break began The experimental group had one month of time to play the games, but there were ... side of Figure are four tabs for more functions Clicking on the top tab (繼續玩) will take the player to the next game In the next game, the focus will switch to a different PC The selection of the...

Ngày tải lên: 19/02/2014, 19:20

... Table The size of the FST obtained for each of the corpora, the coverage of the FST and the traversal time per input are shown in this table The coverage of the FST is the number of inputs that ... of the stored patterns and then traverse the machine using the given test pattern If the machine reaches the final state, then the test pattern matches one of the stored patterns Given that the ... Exactly one node on the frontier of an auxiliary tree, whose label matches the label of the root of the tree, is marked as a foot node by a ' ' ; the other nodes on the frontier of an auxiliary...

Ngày tải lên: 20/02/2014, 22:20