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  2. New York State Office for People With Developmental ...

    en.wikipedia.org/wiki/New_York_State_Office_for...

    They are prohibited by New York State Law and ( OPWDD ) policy to use or carry a firearm, but do carry a expandable baton, handcuffs, mace, bulletproof vests, flashlight, and a radio that is directly linked to other officers and the main office of the facility. The Civil Service title used by the New York State Department of Civil Service for ...

  3. Watershed delineation - Wikipedia

    en.wikipedia.org/wiki/Watershed_delineation

    Watershed delineation is the process of identifying the boundary of a watershed, also referred to as a catchment, drainage basin, or river basin.It is an important step in many areas of environmental science, engineering, and management, for example to study flooding, aquatic habitat, or water pollution.

  4. Boundary (real estate) - Wikipedia

    en.wikipedia.org/wiki/Boundary_(real_estate)

    The boundary (in Latin: limes) may appear as a discontinuation in the terrain: a ditch, a bank, a hedge, a wall, or similar, but essentially, a legal boundary is a conceptual entity, a social construct, adjunct to the likewise abstract entity of property rights. A cadastral map displays how boundaries subdivide land into units of ownership.

  5. Physiographic region - Wikipedia

    en.wikipedia.org/wiki/Physiographic_region

    Physiographic Map from "Geography of Ohio," published in 1923. During the early 1900s, the study of regional-scale geomorphology was termed "physiography". Physiography later was considered to be a portmanteau of "physical" and "geography", and therefore synonymous with physical geography, and the concept became embroiled in controversy surrounding the appropriate concerns of that discipline.

  6. State Plane Coordinate System - Wikipedia

    en.wikipedia.org/wiki/State_Plane_Coordinate_System

    However, the need to transform spatial data from one coordinate system to another can be burdensome. Sometimes a regional area of interest—such as a metropolitan area covering several counties—crosses a state plane zone boundary. The Seattle metropolitan area in Washington is an example of this.

  7. Degree of a continuous mapping - Wikipedia

    en.wikipedia.org/wiki/Degree_of_a_continuous_mapping

    This definition coincides with the algebraic topological definition above. The same definition works for compact manifolds with boundary but then f should send the boundary of X to the boundary of Y. One can also define degree modulo 2 (deg 2 (f)) the same way as before but taking the fundamental class in Z 2 homology.

  8. Real projective space - Wikipedia

    en.wikipedia.org/wiki/Real_projective_space

    For each dimensional k, the boundary maps d k : δD k → RP k−1 /RP k−2 is the map that collapses the equator on S k−1 and then identifies antipodal points. In odd (resp. even) dimensions, this has degree 0 (resp. 2):

  9. Betti number - Wikipedia

    en.wikipedia.org/wiki/Betti_number

    The kth homology group is = ⁡ / ⁡ +, the s are the boundary maps of the simplicial complex and the rank of H k is the kth Betti number. Equivalently, one can define it as the vector space dimension of H k ( X ; Q ) since the homology group in this case is a vector space over Q .