ular ▁materials ▁ ▁Platform ▁screen ▁doors , ▁on ▁railway ▁platforms ▁ ▁Position ▁sensitive ▁device ▁or ▁det ector , ▁a ▁two - dimensional ▁phot od et ector ▁ ▁Pos itive ▁sem ide finite ▁( disambiguation ) ▁ ▁Power ▁spectral ▁density , ▁distribution ▁of ▁power ▁of ▁a ▁signal ▁ ▁Program ▁Service ▁Data , ▁data ▁displayed ▁on ▁HD ▁radio ▁receiver ▁ ▁Pro port ional – sum m ation – d ifference , ▁a ▁type ▁of ▁P ID ▁controller ▁ ▁Political ▁parties ▁ ▁Parti ▁social ▁dém ocrat ique ▁du ▁Québec , ▁a ▁former ▁provincial ▁political ▁party ▁in ▁Quebec , ▁Canada ▁ ▁Party ▁of ▁Social ists ▁and ▁Democr ats , ▁a ▁major ▁political ▁party ▁of ▁San ▁Mar ino ▁ ▁Civil ▁Mov ement ▁" Pe ople ' s ▁Self - Def ense ", ▁a ▁def unct ▁political ▁movement ▁in ▁Ukraine ▁which ▁was ▁part ▁of ▁the ▁Our ▁Ukraine – Pe ople ' s ▁Self - Def ense ▁B loc ▁elect oral ▁al liance ▁ ▁Democratic ▁Social ist ▁Party ▁( Ar gent ina ), ▁a ▁def unct ▁political ▁party ▁of ▁Argentina ▁ ▁Social ▁Democratic ▁Party ▁( Al ban ia ), ▁a ▁minor ▁political ▁party ▁of ▁Alban ia ▁ ▁Social ▁Democratic ▁Party ▁( Ang ola ), ▁a ▁political ▁party ▁of ▁Ang ola ▁ ▁Social ▁Democratic ▁Party ▁( Ben in ), ▁a ▁political ▁party ▁of ▁Ben in ▁ ▁Social ▁Democratic ▁Party ▁( B raz il , ▁ 1 9 4 5 – 6 5 ), ▁a ▁def unct ▁political ▁party ▁of ▁Brazil ▁ ▁Social ▁Democratic ▁Party ▁( B raz il , ▁ 2