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Device detection technology recognizes the devices used to access a website, app, or mobile network and provides detailed information on the device properties.
In this blog we are giving glimpse how to check the ATL CODE of SAP Data Services developed by user following naming standard
In this article, we will briefly discuss what is cloud data services.Data stored as SQL or NoSQL database, there are also other types of data.
Both Microsoft Azure and Amazon Web Services offer a lot of data services. So many services that it can be hard to comprehend how the compare without a scorecard. So, I built a cheatsheet for Azure vs. AWS data services comparison purposes.
Description Figure 1: SeisSound sample image This data product (for a sample click image on right or to visit SeisSound data product repository, click here ) conveys the data in four different ways: an image of the original seismogram an image of a filtered version of the seismogram an image of the spectrogram of the filtered trace an audio playback of the seismic signal that is time-compressed and amplitude-normalized so that the sound is audible for human ears (roughly 20 Hz – 20 kHz) The temporal evolution of the seismogram is depicted by the seismogram turning from a light gray color to a dark black color as time evolves. A pink vertical line in each of the sub-plots indicates the current time of the playback, as does the time counter in the upper right. The SeisSound data products do not reproduce the seismograms in true time, as this would make the movies too long and boring to listen to because the sound would be out of our hearing range. Instead the playback is sped up by the factor indicated in the x-label. For example, a speed up factor of 500 will transform the frequencies 0.5 to 40 Hz in the seismogram to 250 (0.5*500) Hz to 20,000 (40*500) Hz range of our hearing. What’s your hearing range? Test it and find out here. Both the spectrogram and audio file are created after applying a 0.5 Hz high-pass filter. To hear the full range of sounds we recommend listening to these data products with earbuds or good speakers. It is difficult to transform seismic data in a way that both the high-frequency and low-frequency signals become audible at the same time. This is because each would require a different speed-up factor to make the signals heard. To solve this problem we apply an appropriate speed-up factor to hear the higher-frequency (>0.5 Hz) energy and then use MATLAB’s voltage controlled oscillator (vco) function to create a sound signal that oscillates around an audible center frequency in proportion to the amplitude of the seismogram’s lower-frequency energy 1 . We make the length of this modulated signal identical to the time-compressed higher-frequency channel. This allows us to save these two sound outputs as a stereo sound pair 2 . The stereo sound from these dual frequency bands, in combination with the video images, allows the correlations between the lower-frequency surface-waves and high-frequency triggered earthquakes and tremor signals (if they exist) to be assessed. The color of the spectrogram indicates amplitude, where warm colors are higher amplitudes and cool colors are lower amplitudes. These amplitudes represent the log base 10 of the normalized amplitude, multiplied by a scale factor of 10. All SeisSound data products have the same scaling so comparisons can be made between products. Information about the earthquake is displayed in the first line of the title, and information about the seismic recording station, and its distance and azimuth to the earthquake, is shown in the second line of the title. Listed in the top y-axis label is the type of seismogram (i.e., velocity) and the seismogram’s channel code (i.e., BHZ). There is an option to show seismic wave phase arrival times, which are indicated with short blue vertical lines and associated blue text that displays the phases (i.e., P, S, SKS, R1). Exporting the audio channel of the SeisSound product for an event to the corresponding ground motion visualization (GMV) product produces an interesting composite movie. Click on the image below to see and hear such a composite movie created for the Sea of Okhotsk M8.2 event of May 24, 2013. In this case the audio was played only 102 times faster than true speed in order to stay in sync with the video presentation. The following table summarizes the parameters used to generate the SeisSound data product. PARAMETER SAMPLE VALUE Filter 0.5 Hz high-pass VCO filter 0.5 Hz low-pass Speed Factor 500 Approximate number of Frames requested for the movie 100 Image/Movie height (pixels) 720 P slowness (s/degree) 7.2 Rayleigh slowness (s/degree) 28.5 List of requested seismic phases P, Pn, Pg, Pdiff, pPdiff, sPdiff, PcP, PP, PP, PS, PKP, SKS, S, Sn, Sg, Sdiff, pSdiff, sSdiff, SP, ScS, SS, R1, R2 Number of seconds between two consecutive phases to avoid overprinting phase markers (second) 600 IRIS ID (links to information about the earthquake) 1916079 (26 December 2004; Sumatra; magnitude 9) Station Network IU Station name DGAR Station Channel BHZ Script Bundle To create customized SeisSounds, download the MATLAB script bundle (please read the installation instructions in this README file before installing). Footnotes [1] To do this we modulate the amplitude (volume) of the vco tone by the sum of two envelope functions. The first is the envelop of the full data trace and the second is the envelop of the data trace after a low-pass filter (<0.5 Hz) has been applied. We find that using the sum of these two envelopes we can highlight both the arrival of the largest amplitudes in the seismogram in addition to the arrival of higher frequency energy. [2] This is accomplished using MATLAB’s wavwrite function.
The purpose of this document is to up-grade SAP Data Services from 4.X to SAP Data Services 4.3.
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Last week I wrote a post that helped visualize the different data services offered by Microsoft Azure and Amazon AWS. This week I'm writing about the Azure vs. AWS Analytics and big data services comparison.
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How fast is ABAP Core Data Service (CDS)? This is one of the frequent question raised by technical consultants after any ABAP CDS sessions...
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