منابع مشابه
The shifting sands algorithm
We resolve the problem of small-space approximate selection in random-order streams. Specifically, we present an algorithm that reads the n elements of a set in random order and returns an element whose rank differs from the true median by at most n while storing a constant number of elements and counters at any one time. This is optimal: it was previously shown that achieving better accuracy r...
متن کاملBuilding a Sea Urchin on Shifting Sands
Constructing a multicellular organism from scratch is a staggeringly challenging task. It seems even more miraculous when you consider that it’s actually entirely orchestrated by a few thousand genes and their protein products, acting (largely autonomously) within each one of the rapidly dividing cells. The most crucial of these genes and proteins regulate each other in intricately interconnect...
متن کاملIranian Wedding Invitations in the Shifting Sands of Time
As a distinct socially constructed genre, wedding invitations (WIs) offer a fruitful site for investigating how two areas of genre knowledge (i.e., form and content) change over time under the influence of sociocultural forces. Through the examination of 100 Iranian WIs dating from 1970s to the present time, the study investigated the trajectories of change through time within the social semiot...
متن کاملProton Therapy: Ever Shifting Sands and the Opportunities and Obligations within
Proton therapy is associated with significant benefit in terms of normal tissue sparing and potential radiation dose escalation for many patients with malignant diseases. Due to recognition of these qualities, the availability of this technology is increasing rapidly, both through increased availability of large centers, and with the possibility of smaller, lower cost proton therapy centers. Su...
متن کاملKim-1/Tim-1 and Immune cells: Shifting Sands
Kim-1/Tim-1 is an apoptotic-cell phagocytosis and scavenger receptor that is most highly upregulated in proximal tubular epithelium in acute and chronic kidney injury. While Kim-1/Tim-1 has been proposed to be a costimulatory molecule for immune cells, its potential immunological role has been controversial. In the presence of very high epithelial cell expression, understanding the influence of...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Medical Journal Armed Forces India
سال: 2016
ISSN: 0377-1237
DOI: 10.1016/j.mjafi.2015.12.002