principle of the test method
Teaching About Evolution And The Nature Of Science National Academy of Sciences pot
Ngày tải lên :
27/06/2014, 05:20
... been the discovery of the vast expanse of geologic time Early methods of calculating the age of the earth relied on measures of the rate of sedimentation or the cooling of the earth from an initially ... the consequences of the rotation of the earth on its axis Today, we can see for ourselves the rotation of the earth from satellites orbiting the planet Like biological evolution, the theory of ... been the abandonment of one notion about stability after another: that the earth was the center of the universe, that the world’s living things are unchangeable, that the continents of the earth...
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Báo cáo hóa học: " Research Article Design and Experimental Evaluation of a Vehicular Network Based on NEMO and MANET" pdf
Ngày tải lên :
21/06/2014, 08:20
... the results of the UMTS link offer the worse results, due to the delay of the operator’s network and the bandwidth limited by the radio coverage and the available resources in the cell The 802.11b ... approaching the corners The results collected in the UDP tests are plotted in Figure 11 The several graphs show the results collected during four tests around the buildings The upper plot shows the number ... by using the control buttons on the left side of the web page The replay speed can be adjusted and a step-by-step mode has been implemented On the map, the positions and movements of the vehicles...
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Báo cáo hóa học: " Flexible Analog Front Ends of Reconfigurable Radios Based on Sampling and Reconstruction with Internal Filtering" pdf
Ngày tải lên :
23/06/2014, 00:20
... that of s(t), the average power of the error e(t) caused by the channel mismatch can be comparable with or even exceed the power of s(t) There are three approaches to this problem The first of them ... further simplifies the modified SCs Thus, the described modification of the SCs substantially simplifies their realization at the expense of slightly lower performance 4.5 Use of orthogonality of ... part of this error can be filtered out in the receiver DP Therefore, (24) is a lower bound of the actual SER This method of reducing the number of multipliers N can also be used for L > if the...
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Báo cáo lâm nghiệp: "Automatic determination of fiber orientation on OSB surface using line detection method based on small eigenvalue analysis" doc
Ngày tải lên :
08/08/2014, 00:22
... [1], was operated on it The Canny method finds edges by looking for local maxima of the gradient of g The gradient is calculated using the derivative of a Gaussian filter The method uses two thresholds, ... eliminate the effect of small strands on the edge maps A test experiment was conducted to test the robust and effectiveness of the system to determine the fiber orientation Small samples of 300 ... Determination of OSB fiber orientation (4) Find the location of the edges using the following equation for non-maximal suppression: ∂ - G × g = (2) ∂n (5) Compute the magnitude of the edge using the...
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báo cáo khoa học: " Classification of unknown primary tumors with a data-driven method based on a large microarray reference database" ppsx
Ngày tải lên :
11/08/2014, 12:21
... Score > 0.01 50% of samples, 97% accuracy Score > 0.05 69% of samples, 89% accuracy Figure A graph of the accuracy of the method as a function of the similarity score of the best hit The graph was ... corresponds to the levels in the reference tissue types The AGEP method also evaluates how uniquely the tm-score categorizes the test sample among the tissues of the reference data This is the tissue ... samples Of the 128 metastasis samples, 83 could be assigned to both a target tissue and a cancer of target tissue We then studied whether the similarity of these test samples to either their target...
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1 an envelope detection method based on the first vibration mode of bearing vibration
Ngày tải lên :
03/12/2014, 23:41
... describes the dimension information of defect and the sensitivity of striking energy, and alm(t) is the characteristic function of transmission path In the other term, nr is the number of roller, ... frequency and the carrier frequency, and would be the intrinsic characteristics of the system L is the quantity of vibration mode of the system hlm(t) and hln(t) are the initial angles for the amplitude ... estimation of the resonance frequency Thus, an estimation of the resonance frequency f1 could be easily derived from the peak in the first-vibrationmode of the spectrum for the vibration signal Thus, the...
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Reliability analysis of a power system based on the multi state system theory
Ngày tải lên :
03/01/2014, 19:38
... capacity of the system is above 22.8 Ah, the system is reliable, though the capacity of a battery is lower than 5700 mAh Suppose the capacity of the first branch is 5600 mAh and the capacity of other ... number of subsystems in the system; M sys is is the performance of the component, l = 1, , M Then the universal generating function of the component is: M ∑q z probability; U ( z ) is the universal ... RELIABILITY ANALYSIS OF THE POWER SYSTEM The reliability of the power system is analyzed using the multi-state system theory According to (2), the universal generating function of the battery is:...
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Tài liệu Gait Pattern Classification of Healthy Elderly Men Based on Biomechanical Data ppt
Ngày tải lên :
14/02/2014, 07:20
... terms of the effect of the combined 31 gait parameters The optimal number of clusters can be determined in several ways Winters and coworkers*’ calculated the criterion of Hartigan and the maximum ... all the trials of the El cluster were paired according to the subjects, this was not always observed in the E2 group This reflects a variable pattern between the trials of the same individual The ... possible that the trials of a young subject may be located in one of the elderly subject’s clusters Inversely, the trials of an elderly individual could end up within the cluster of the young, able-bodied...
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Tài liệu Báo cáo khoa học: "Knowledge Acquisition from Texts : Using an Automatic Clustering Method Based on Noun-Modifier Relationship" pptx
Ngày tải lên :
22/02/2014, 03:20
... Hillsdale, NJ • Evaluation of the quality of the clustering procedure • in the majority of the works using clustering methods, the evaluation of the quality of the method used is based on recall and precision ... cluster interpretation The interpretation, by the KE, of the results given by the clustering methods applied on the data of table leads him to define conceptual fields Figure shows the transition from ... constitute synonym sets : the synonym terms are grouped, one of them is chosen as a concept label, and the others are kept as the values of a generic attribute labels of the considered concept (see...
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Báo cáo khoa học: Design of expression vectors for RNA interference based on miRNAs and RNA splicing potx
Ngày tải lên :
07/03/2014, 11:20
... efficiency for the downstream ORF in unprocessed pri-miRNAs However, expression of the marker (regardless of the placement location) could only occur at the expense of failure of cleavage of primiRNA ... cassettes into a chimeric intron composed of the 5¢ donor site from the first intron of the human b-globin gene and the branch and 3¢ acceptor site from the intron of an immunoglobulin gene heavy chain ... inserting specific artificial miRNA sequences into the targeting vectors The terminal regions of the arms of the miR155 (A) and miR30 (B) vectors are shaded, and their stems designed to be replaced by artificial...
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Báo cáo khoa học: "Automatic Acquisition of English Topic Signatures Based on a Second Language" potx
Ngày tải lên :
08/03/2014, 04:22
... vector is the sum of the vectors of concepts that occur in a context window If many of the concepts in a window have a strong component for one of the topics, then the sum of the vectors, the context ... and w are vectors and N is the dimension of the vector space The more overlap there is between the neighbours of the two words whose vectors are compared, the higher the score Contexts are represented ... the training sets Larger amounts of training data tend to yield a larger set of features At the end of the training stage, for each sense, a sense vector was produced Then we lemmatised the test...
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Báo cáo " MODEL OF CONDUCTIVITY FOR PEROVSKITES BASED ON THE SCALING PROPERTY OF GRAIN BOUNDARY " ppt
Ngày tải lên :
14/03/2014, 13:20
... temperature-independent part of the boundary resistivity whereas the ρ1 to the temperature-dependent part The problem was not, however, the determination of n, D or D but their physical foundation The procedures ... the ratio lG = LS /LA of the linear extents LS , determined on the basis of the grain domain perimeter G − length (in unit of image size) and LA , determined on the basis of the grain domain area ... that the estimated values successfully described the temperature behaviours of the resistivity for the tested samples Furthermore, the fractal dimension showed very good correspondence to the...
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Pfam: A Comprehensive Database of Protein Domain Families Based on Seed Alignments pptx
Ngày tải lên :
16/03/2014, 16:20
... sequence on one line The name is the Swissprot acronym and the start and end are the coordinates of the first and last residues of the sequence segment In the release flat file the Swissprot accession ... may affect the HMM adversely The full alignments were never edited; if they were unacceptable, either the seed alignment was improved or the method to generate the full alignment from the seed ... compared with the existing models and if they score above the cutoff they are automatically added to the full alignment Normally the seed alignment is not altered, except for the updating of corrected...
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Báo cáo khoa học: "Dependency Parsing of Japanese Spoken Monologue Based on Clause Boundaries" docx
Ngày tải lên :
17/03/2014, 04:20
... and then modified by hand Here, the specification of the partsof-speech is in accordance with that of the IPA parts -of- speech used in the ChaSen morphological analyzer (Matsumoto et al., 1999), the ... ancillary words, the type of dependency is the lexicon, part -of- speech and conjugated form of the rightmost ancillary word, and if not so, it is the part -of- speech and conjugated form of the rightmost ... Results The parsing times of both methods are shown in Table The parsing speed of our method improves by about times on average in comparison with the conventional method Here, the parsing time of...
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ANNALS OF THE NEW YORK ACADEMY OF SCIENCES - Full cost accounting for the life cycle of coal potx
Ngày tải lên :
23/03/2014, 00:20
... estimates of the social cost of carbon the valuation of the damages due to emissions of one metric ton of carbon, of $30/ton of CO2 equivalent (CO2 e),20 with low and high estimates of $10/ton ... activity of one agent affects the well-being of another agent outside of any type of market mechanism—these are often not taken into account in decision making and when they are not accounted for, they ... accounting for the life cycle of coal Epstein et al emissions from coal mines, on the order of 3% of the stack emissions.110 There are also additional GHG emissions from the other uses of coal, approximately...
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Báo cáo khoa học: "A Latent Topic Extracting Method based on Events in a Document and its Application" pot
Ngày tải lên :
23/03/2014, 16:20
... show the effectiveness of our method by comparing the accuracy of a generated summary by our method with that of summaries by the representative summarization methods often used as benchmark methods ... Moreover, to examine the characteristics of the proposed method, we compare both methods in terms of the number of topics and the proper measure to estimate similarity The number of trials is 20 at ... while the average number of words per sentence is 8.93 A lot of infrequent Events were observed in the experiments because of the nature of an Event, i.e., a pair of words This means that the same...
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