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Techniques to select wind turbine and wind farm aero acoustic noise measurements, including instrumentation standards and metrology technology, measurement set, measurement procedures, data processing, and noise source data analysis are described in this standard. Nearfield sound measurement similar to IEC 61400-11 distance and far-field sound measurement both outside and inside concerned houses or buildings are within the scope of this standard. This standard focuses on amplitude modulation noise, however, guidelines for low-frequency noise including infrasound near-field measurement are provided. IEC 61400-11 provides overall wind turbine noise measurement standards, while this standard focuses more on the aero acoustic noise of wind turbines to avoid overlap with IEC 61400-11.

Noise --- Wind turbines. --- Measurement.

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The conference will focus broadly on signal and information processing with an emphasis on up and coming signal processing themes The technical program will be comprised of a main program (General Symposium) and several co located symposia on special topics.

Information measurement --- Signal processing

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Software engineering --- Software measurement

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In rural societies of low- and middle-income countries, land is a major measure of wealth, a critical input in agricultural production, and a key variable for assessing agricultural performance and productivity. In the absence of cadastral information to refer to, measures of land plots have historically been taken with one of two approaches: traversing (accurate, but cumbersome), and farmers' self-report (cheap, but marred by measurement error). Recently, the advent of cheap handheld GPS devices has held promise for balancing cost and precision. Guided by purposely collected primary data from Ethiopia, Nigeria, and Tanzania (Zanzibar), and with consideration for practical household survey implementation, the paper assesses the nature and magnitude of measurement error under different measurement methods and proposes a set of recommendations for plot area measurement. The results largely point to the support of GPS measurement, with simultaneous collection of farmer self-reported areas.

Agriculture --- Land --- Measurement --- Surveys

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Tides --- Measurement --- United States.