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Roughness progression for a road in Texas, US. Blue dots show the times of maintenance. The international roughness index (IRI) is the roughness index most commonly obtained from measured longitudinal road profiles. It is calculated using a quarter-car vehicle math model, whose response is accumulated to yield a roughness index with units of ...
These include transversal road profile, macro-texture measurements, longitudinal profile, rut depth, rut width, cross fall, curve radius, cracks, International Roughness Index (IRI), [citation needed] mean profile depth, vehicle speed, position relative to the start point, GNSS position, together with pavement imaging and time-stamping of measurements.
The Indonesian Food and Drug Authority (Indonesian: Badan Pengawas Obat dan Makanan, lit. 'Food and Drug Supervisory Agency'), Badan POM/BPOM, or Indonesian FDA is a government agency of Indonesia responsible for protecting public health through the control and supervision of prescription and over-the-counter pharmaceutical drugs (medication), vaccines, biopharmaceuticals, dietary supplements ...
The present serviceability index (PSI) is a pavement performance measure.Introduced by the American Association of State Highway and Transportation Officials (AASHTO), the PSI is one of the most widely used pavement performance indicators after pavement condition index (PCI) and international roughness index (IRI).
The pavement condition index (PCI) is a numerical index between 0 and 100, which is used to indicate the general condition of a pavement section.The PCI is widely used in transportation civil engineering [1] and asset management, and many municipalities use it to measure the performance of their road infrastructure and their levels of service. [2]
Roughness length, roughness as applied in meteorology; International Roughness Index, the roughness of a road; Hydraulic roughness, the roughness of land and waterway features; Roughness (psychophysics) in psychoacoustics refers to the level of dissonance; The 'roughness' of a line or surface, measured numerically by the Hausdorff dimension
The International Terrestrial Reference System (ITRS) describes procedures for creating reference frames suitable for use with measurements on or near the Earth's surface. This is done in much the same way that a physical standard might be described as a set of procedures for creating a realization of that standard.
This is a list of Indonesian provinces by Human Development Index as of 2024. The data are regularly published every year by Statistics Indonesia . [ 1 ] Below also contains list of cities and regencies that has classification of very high HDI as of 2024, as well as historical data of HDI of Indonesian provinces.