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  2. Trade Data Monitor - Wikipedia

    en.wikipedia.org/wiki/Trade_Data_Monitor

    Trade Data Monitor (TDM) is a trade data company based in Charleston, SC and Geneva, Switzerland. [2] It procures and aggregates monthly import and export statistics for over 110 countries using Harmonized System commodity codes, offers specialized training in trade statistics, and provides clients with a searchable database and built-to-order statistical reports.

  3. TD Ameritrade - Wikipedia

    en.wikipedia.org/wiki/TD_Ameritrade

    TD Ameritrade was a stockbroker that offered an electronic trading platform for the trade of financial assets. The company was founded in 1975 as First Omaha Securities. In 2006, it acquired the United States operations of TD Waterhouse from Toronto-Dominion Bank and was renamed TD Ameritrade. In 2020, TD Ameritrade was acquired by Charles ...

  4. Time-division multiplexing - Wikipedia

    en.wikipedia.org/wiki/Time-division_multiplexing

    e. Time-division multiplexing (TDM) is a method of transmitting and receiving independent signals over a common signal path by means of synchronized switches at each end of the transmission line so that each signal appears on the line only a fraction of time according to agreed rules, e.g. with each transmitter working in turn.

  5. Trade data - Wikipedia

    en.wikipedia.org/wiki/Trade_data

    Different sources of trade data may provide more or less complete data coverage, and more or less detail: reported vs. mirrored: One key distinction in trade data is between the reporting country (the country that provides data) and the partner country (the country listed as an export partner or import partner in the data provided by a reporting country).

  6. Add or disable 2-step verification for extra security - AOL Help

    help.aol.com/articles/2-step-verification...

    1-800-358-4860. Get live expert help with your AOL needs—from email and passwords, technical questions, mobile email and more. Add or disable 2-step verification for extra security. Add an extra security step to sign into your account with 2-step verification. Find out how to turn on 2-step verification and receive a verification code, and ...

  7. Fix problems signing into your AOL account - AOL Help

    help.aol.com/articles/help-signing-in

    Still need help? Call paid premium support at 1-800-358-4860 to get live expert help from AOL Customer Care. Having trouble signing in? Find out how to identify and correct common sign-in issues like problems with your username and password, account locks, looping logins, and other account access errors.

  8. Securities information processor - Wikipedia

    en.wikipedia.org/wiki/Securities_Information...

    A securities information processor (SIP) is a part of the infrastructure of public market data providers in the United States that process, consolidate, and disseminate quotes and trade data from different US securities exchanges and market centers. [1] An important purpose of the SIPs for US securities is to publish the prevailing National ...

  9. Orthogonal frequency-division multiplexing - Wikipedia

    en.wikipedia.org/wiki/Orthogonal_frequency...

    Conceptually, OFDM is a specialized frequency-division multiplexing (FDM) method, with the additional constraint that all subcarrier signals within a communication channel are orthogonal to one another. In OFDM, the subcarrier frequencies are chosen so that the subcarriers are orthogonal to each other, meaning that crosstalk between the sub ...