Short Covering

2018 ◽  
Author(s):  
Jesse Blocher ◽  
Matthew C. Ringgenberg
Keyword(s):  
Short Covering

Short Covering Trades

2015 ◽  
Author(s):  
Ekkehart Boehmer ◽  
Truong X. Duong ◽  
Zsuzsa R. Huszar
Keyword(s):  
Short Covering

scholarly journals Short covering and price stabilization of IPOs

2013 ◽  
Vol 20 (10) ◽  
pp. 931-937 ◽  
Author(s):  
A. Signori ◽  
M. Meoli ◽  
S. Vismara
Keyword(s):  
Price Stabilization ◽  
Short Covering

Sum-free sets and short covering codes

2010 ◽  
Vol 39 (6) ◽  
Author(s):  
Emerson Carmelo ◽  
Candido Mendonça
Keyword(s):  
Covering Codes ◽  
Short Covering ◽  
Free Sets

Trichobothrial morphology of Theraphosidae and Barychelidae spiders (Araneae, Mygalomorphae)

Zootaxa ◽  
2012 ◽  
Vol 3439 (1) ◽  
pp. 1 ◽  
Author(s):  
JOSÉ PAULO LEITE GUADANUCCI
Keyword(s):  
Comparative Analysis ◽  
Short Covering ◽  
Morphological Patterns

Clavate trichobothria are present on tarsi of all Theraphosidae and some Barychelidae spiders. They are also here reportedon the tibiae of some theraphosids. A comparative analysis of their occurrence is presented. Representatives of allsubfamilies of Barychelidae and Theraphosidae were studied. The following morphological patterns were recognized:filiform, thickened, and clavate. The surface of these trichobothria can be plumose or non-plumose. Five patterns in thedisposition of clavate trichobothria on tarsi, were recognized: 1—two parallel rows; 2—two diverging rows; 3—onenarrow, long median row; 4—one wide central row, intermixed with short covering setae; 5—a short row, restricted to thedistal half of the tarsus. The disposition of trichobothria on tibiae did not differ among the taxa examined, except for thoseon lateral surfaces, where they can form a row or be grouped. Some patterns of morphology and distribution can be usedas diagnoses of subfamilies and genera (e.g., Aviculariinae, Ischnocolus, Heterothele). The significance of such patterns in systematics is discussed and the usage in phylogeny is proposed.

Hybocrinid and disparid crinoids from the Middle Ordovician (Galena Group, Dunleith Formation) of northern Iowa and southern Minnesota

1992 ◽  
Vol 66 (6) ◽  
pp. 973-993 ◽  
Author(s):  
James C. Brower
Keyword(s):  
Multivariate Statistics ◽  
Supply Rate ◽  
Middle Ordovician ◽  
Crown Volume ◽  
Food Particles ◽  
Attachment Device ◽  
Short Covering ◽  
Tube Feet

Four hybocrinid and disparid crinoids from the Middle Ordovician Dunleith Formation (Galena Group) of northern Iowa and southern Minnesota are described: Hybocrinus conicus Billings, Ohiocrinus levorsoni n. sp., Caleidocrinus (Huxleyocrinus) gerki n. sp., and Ectenocrinus simplex (Hall). The first three taxa are rare. Ectenocrinus simplex is an abundant and protean form ranging from the Shermanian to the Maysville and from the Appalachians to the Midcontinent. One Middle Ordovician specimen from the Dunleith is a complete small adult with stem and a lichenocrinid holdfast. The column was largely upright with the crown located about 25 cm above the seafloor. The Middle Ordovician crinoids differ somewhat from the later Cincinnatian material where only young E. simplex exhibit lichenocrinid holdfasts. Older crinoids became detached and were eleutherozoic well before the column was 25 cm long. Thus, the Cincinnatian individuals lost the attachment device earlier during ontogeny than their ancestors in the Middle Ordovician. Unlike most associated crinoids, E. simplex formed a roughly conical filtration net. The arms of E. simplex are extensively branched. Ten main arms bear unbranched ramules on alternate brachials, and the arm structure converges on the pinnulate pattern. Narrow food grooves and short covering plates are present. Analogies with living crinoids indicate that small food particles were caught by small and close-spaced tube-feet. The formation of new plates and ramules at the arm tips increases the size of the food-gathering system throughout ontogeny. The food-gathering capacity comprises the number of food-catching tube-feet times the width of the food grooves, and it measures the number and size of food particles that can be caught. Both size and capacity of the food-gathering system are positively allometric compared to crown volume and the amount of tissue that must be nourished. This is mainly caused by the addition of new ramules at the arm tips, which generates an exponentially increasing plate supply rate. Examination of numerous specimens from various geographic and stratigraphic horizons with multivariate statistics shows that the species was homogeneous throughout its range aside from the differences in living habits mentioned above.

SOME NEW NORTH AMERICAN SPECIES OF DELTOCEPHALOID LEAFHOPPERS

1935 ◽  
Vol 67 (8) ◽  
pp. 164-172 ◽  
Author(s):  
Dwight M. Delong ◽  
Ralph H. Davidson
Keyword(s):  
North American ◽  
Anterior Margin ◽  
North American Species ◽  
Apical Cells ◽  
Basal Width ◽  
Short Covering ◽  
General Appearance

Resembling caperatus in size and general appearance but without color markings, apparently more closely related to apicatus and alboneura but with short wings. Length 2-2.5 mm.Vertex bluntly angled, a little longer on middle than basal width between eyes. Elytra short covering only first four or five basal segments of abdomen, apical cells very small.Color straw yellow, frequently unmarked. Ocelli black. 111 dark specimens with faint markings on vertex. Four large brown spots on anterior margin of pronotum and veins of elytra heavily infuscated.

scholarly journals Bounds for short covering codes and reactive tabu search

2010 ◽  
Vol 158 (5) ◽  
pp. 522-533 ◽  
Author(s):  
Carlos Mendes ◽  
Emerson L. Monte Carmelo ◽  
Marcus Poggi
Keyword(s):  
Tabu Search ◽  
Reactive Tabu Search ◽  
Covering Codes ◽  
Short Covering

scholarly journals Short covering codes arising from matchings in weighted graphs

2012 ◽  
Vol 82 (281) ◽  
pp. 605-616 ◽  
Author(s):  
Anderson N. Martinhão ◽  
Emerson L. Monte Carmelo
Keyword(s):  
Weighted Graphs ◽  
Covering Codes ◽  
Short Covering

scholarly journals Short-Sellers and Short Covering

2009 ◽  
Vol 13 (3/4) ◽  
pp. 265-292 ◽  
Author(s):  
James Clunie ◽  
◽  
Peter Moles ◽  
Tatiana Pyatigorskaya ◽  
◽  
...  
Keyword(s):  
Short Sellers ◽  
Short Covering
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