A lower bound for the size of a complete cap of the polar space H(n, q2) associated to the non-degenerate Hermitian variety Un is given; this turns out to be sharp for even q when n = 3. Also, a family of caps of H(n, q2) is constructed from Fq2-maximal curves. Such caps are complete for q even, but not necessarily for q odd.

A family of caps constructed by Ebert, Metsch and T. Szönyi [8] results from projecting a Veronesian or a Grassmannian to a suitable lower-dimensional space. We improve on this construction by projecting to a space of much smaller dimension. More precisely we partition PG(3r − 1, q) into a (2r − 1)−space, an (r − 1)−space and qr − 1 cyclic caps, each of size (q2r − 1)(q − 1). We also decide whe...

We study 2009 and 2020 dark trading for U.S. stocks. Dark is lower when volume low, volatility high, in periods of markets stress. pools are more active large caps, while internalization common small caps. Traders use to jump the queue caps 2009, avoid crossing spread both years. Internalization higher spreads wide depth high. pool improves but worsens market quality 2020. discuss explanations ...

نم أشنت .ةردان ةديمح ماروأ يه )ةيفيللا( ةيطابرلا مارولأا عباط تاذ يهو .مسلجا ءاحنأ عيمج يف ةيلضعلا لكايهلا لدعم عافترا ىلإ ىدأ امم ، ةرواجلما هيللمحا ةجسنلأل يحاشترا ةردنل ًارظن و .يحارلجا لاصئتسلاا دعب مرولا عوجر ةبسنو نع غلابلإاب انمق اننإف ، ةبقرلاو سأرلا ةقطنم يف مارولأا هذه يف اهجلاعو قنعلا ىلعأ يف يطابرلا مرولاب اهصيخشت تم ةلاح جلاعل هرفوتلما تارايلخاو قرطلا لوح يعولا ةدايزل ،انافشتسم .ةبق...

This paper constructs fully parallel NN hardware architecture, FPGA has been used to reduce neuron hardware by design the activation function inside the neuron without using lookup table as in most researches, to perform an efficient NN. It consist of two main parts; the first part covers network training using MATLAB program, the second part represents the hardware implementation of the traine...

ةـصلاخلا : ةلاحلا رايعم ثحبلا اذه يف ضرعن – ةلاحلا حشرمُــل لماشلا يبراقتلا تابثلل غارفلا – يمقرلا غارفلا عبشملا يباسحلا ضئافلا مادختساب كلذو ةددحم ةميق اذ . دقو ماظنلل ةديدج ةيصاخ ءاصقتساب رايعملا قُـتشأ ةساردلا ديق . اس رايعم عم رايعملا اذه ةنراقمب انمق امآ جنيسو راآ نم لٍآ لَـبـقِ نم هضرع مت قب . دقو جنيسو راآ رايعم نم لقأ طباوض يذ يلاحلا رايعملا نأ ةنراقملا تنابأ . و نع حرتقملا رايعملا ةعاجن ان...

Introduction Cryopyrin-associated periodic syndromes (CAPS) are the rare hereditary autoinflammatory diseases. CAPS include three similar conditions are distinguished which lie along a phenotypical continuum with increasing levels of severity: familial cold autoinflammatory syndrome (FCAS), Muckle-Wells syndrome (MWS) and CINCA/ NOMID. Distinguishing features include cutaneous, neurological, op...

CONTEXT Catastrophic antiphospholipid syndrome (CAPS) is a rare life-threatening autoimmune disease characterized by disseminated intravascular thrombosis resulting in multiorgan failure. EVIDENCE ACQUISITIONS Directory of Open Access Journals (DOAJ), Google Scholar, PubMed (NLM), LISTA (EBSCO) and Web of Science have been searched. RESULTS CAPS is due to antiphospholipid antibodies directe...