MPI-2’s one-sided communication interface has become prevalent in scientific applications. One of the important operations in a one sided model is read-modifywrite. MPI-2 semantics provide MPI Put, MPI Get and MPI Accumulate operations which can be used to implement the read-modify-write functionality. The different strategies yield varying performance benefits depending on the underlying one-s...

We propose a general definition of “two-sided markets,” identify the conditions under which a market is indeed two-sided, and, finally, discuss why two-sidedness matters for business and public policies.

An ideal I of a ring A is essentially nilpotent if I contains a nilpotent ideal N of A such that J 91N # 0 whenever J is a nonzero ideal of A contained in I. We show that each ring A has a unique largest essentially nilpotent ideal EN(A). We study the properties of EN(A) and, in particular, we investigate how this ideal behaves with respect to related rings.

NUMBER 4 A target hides himself in one of the boxes 1,2, ... , m with probability distribution X=<Xl, ... , Xm) and can move to any of other boxes after each unsuccessful search by a searcher. The searcher is not informed of x and continues search until the target is found. He is informed of Ci'S, i.e., examination costs of each box, and ai's, i= 1, ... , m, where ai is the probability of overl...

We study the economic tradeoffs that drive organizations to position themselves closer to or further away from a multi-sided platform (MSP) business model, relative to three traditional alternatives: vertically integrated firms, resellers or input suppliers. These tradeoffs lead to a comprehensive discussion of the defining features of MSPs. The formal model we develop focuses on the MSP versus...

The term ;right-sided colitis' has been used to describe a lesion in which the right half of the colon shows maximal inflammatory changes; although the terminal ileum is always involved, the rectum is normal or shows minimal inflammatory changes. Some of these cases appear to be of atypical Crohn's disease, whilst the others resemble chronic ulcerative colitis. The high incidence of Jewish peop...

We report a case of 35-year-old male patient who presented with painful right side of scrotum and worm pouting out of the scrotum. The patient had undergone surgery for strangulated right inguinal hernia 2 years back. On exploration we found multiple adult Ascaris worms in the scrotum with right-sided hydrocele. All the worms were removed and eversion of sac was done.

INTRODUCTION True left-sided gallbladder (LSG) is a rare finding that may present with symptoms similar to those of a normally positioned gallbladder. Moreover, it may be missed by preoperative imaging studies such as ultrasound, computed tomography (CT), magnetic resonance imaging (MRI), or endoscopic ultrasound. True left-sided gallbladder is a surgical challenge and surgical technique may ne...

The clinical utility of plasma natriuretic peptide concentrations in dogs with right-sided congestive heart failure (CHF) remains unclear. We investigated whether plasma levels of atrial natriuretic peptide (ANP) and N-terminal pro B-type natriuretic peptide (NT-proBNP) are useful for assessing the congestive signs of right-sided heart failure in dogs. This retrospective study enrolled 16 healt...

Various economic interactions can be modeled as two-sided markets. A central solution concept to these markets are stable matchings, introduced by Gale and Shapley. It is well known that stable matchings can be computed in polynomial time, but many real-life markets lack a central authority to match agents. In those markets, matchings are formed by actions of self-interested agents. Knuth intro...