costate


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costate

[′kä‚stāt]
(biology)
Having ribs or ridges.
References in periodicals archive ?
We use Lagrange multipliers method to derive an optimality system which consists of state equations, costate equations, and optimality conditions.
The costate equation is given by dp/dt = -[partial derivative]H/[partial derivative]X which becomes:
In a dynamic programming problem, this would be the costate variable associated with nonassociated gas reserves.
The two relevant constraints are (i) and (ii), which lead to a problem with two costate variables, [[lambda].
84) Aphidius ervi Haliday --Anterolateral area of petiole costate (Fig.
11); basal process lobate longitudinally; distal process terminating adjacent to base of flagellum (in dorsal aspect), rib-like and extending longitudinally; distal lobe represented by shelf at base of flagellum; median lobe not developed; internobasal inflection absent; external lobe present, separated from distal process; with small, longitudinally-oriented costate process.
Mesepisternal pits costate (females): absent (0), present (1).
where [lambda] denotes the costate variable and the subscript A denotes taking the derivative with respect to A, and [A.
The first two ones, of which only the latter occurs in Mexico, cannot be confounded with the new species, since they both bear all elytral intervals costate, at least in basal half.
However, whereas worm borings on Ordovician brachiopods from Estonia occur preferentially on strongly to moderately costate shells (Vinn 2005), the highest boring frequency on Recent brachiopods from the San Juan Islands is observed on smooth shells (i.
Leslie (2000) differentiated three types of elements: geniculate (oistodiform) and two varieties of costate coniform (acontiodiform and distacodiform).