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  2. International English Language Testing System - Wikipedia

    en.wikipedia.org/wiki/International_English...

    International English Language Testing System (IELTS / ˈ aɪ. ɛ l t s /) is an international standardized test of English language proficiency for non-native English language speakers. It is jointly managed by the British Council, IDP and Cambridge English, and was established in 1989. IELTS is one of the major English-language tests in the ...

  3. Kalman filter - Wikipedia

    en.wikipedia.org/wiki/Kalman_filter

    Due to the time delay between issuing motor commands and receiving sensory feedback, the use of Kalman filters provides a realistic model for making estimates of the current state of a motor system and issuing updated commands. The algorithm works by a two-phase process having a prediction phase and an update phase.

  4. Water filter - Wikipedia

    en.wikipedia.org/wiki/Water_filter

    A water filter removes impurities by lowering contamination of water using a fine physical barrier, a chemical process, or a biological process. Filters cleanse water to different extents, for purposes such as: providing agricultural irrigation, accessible drinking water, public and private aquariums, and the safe use of ponds and swimming pools .

  5. Reading - Wikipedia

    en.wikipedia.org/wiki/Reading

    Reading is the process of taking in the sense or meaning of letters, symbols, etc., especially by sight or touch.. For educators and researchers, reading is a multifaceted process involving such areas as word recognition, orthography (spelling), alphabetics, phonics, phonemic awareness, vocabulary, comprehension, fluency, and motivation.

  6. 'Stick to the plan': Readers weigh in on early retirement - AOL

    www.aol.com/finance/stick-plan-readers-weigh...

    The number of workers who plan to work full time beyond age 62 dropped to 46%, down from 55% four years ago. Only 31% of workers expect to work beyond 67, down from 36% in 2020. Nearly two ...

  7. Common European Framework of Reference for Languages

    en.wikipedia.org/wiki/Common_European_Framework...

    Development. An intergovernmental symposium in 1991 titled "Transparency and Coherence in Language Learning in Europe: Objectives, Evaluation, Certification" held by the Swiss Federal Authorities in the Swiss municipality of Rüschlikon found the need for a common European framework for languages to improve the recognition of language qualifications and help teachers co-operate.

  8. Great Filter - Wikipedia

    en.wikipedia.org/wiki/Great_Filter

    Great Filter. The Great Filter is the idea that, in the development of life from the earliest stages of abiogenesis to reaching the highest levels of development on the Kardashev scale, there is a barrier to development that makes detectable extraterrestrial life exceedingly rare. [1] [2] The Great Filter is one possible resolution of the Fermi ...

  9. History of water filters - Wikipedia

    en.wikipedia.org/wiki/History_of_water_filters

    The history of water filters can be traced to the earliest civilisations with written records. Water filters have been used throughout history to improve the safety and aesthetics of water intended to be used for drinking or bathing. In modern times, they are also widely used in industry and commerce. The history of water filtration is closely ...

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