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In this paper we present a new system for making use of the cyles routinely wasted in local area networks. The Piranha system harnesses these cycles to run explicitly parallel programs. Programs written for Piranha are specializations of Linda master/worker programs [5]. We have used Piranha to run a number of production applications. We present a(More)
While the availability of platform-independent code on the Internet is increasing, third-party code rarely exhibits all of the features desired by end users. Unfortunately, developers cannot foresee and provide for all possible extensions. In this paper, we describe load-time transformation, a stage in the program development lifecycle in which classes are(More)
Under \adaptive parallelism," the set of processors executing a parallel program may grow or shrink as the program runs. Potential gains include the capacity to run a parallel program on the idle workstations in a conventional LAN|processors join the computation when they become idle, and withdraw when their owners need them|and to manage the nodes of a(More)
Piranha is a execution model for Linda 1 developed at Yale by Kaminsky and otherss4] to reclaim idle cycles from networked workstations for use in executing parallel programs. Piranha has proven to be an eeective system for harnessing large amounts of computing power. Most Piranha research to this point has concentrated on eeciently executing a single(More)
The continuously increasing cost of managing IT systems has led many companies to outsource their commercial services to external hosting centers. Cloud computing has emerged as one of the enabling technologies that allow such external hosting efficiently. Like any IT environment, a Cloud Computing environment requires high level of maintenance to be able(More)
Monoclonal antibodies directed against human estrogen receptor (ER) and progesterone receptor (PR) have been used extensively for biochemical and immunohistochemical detection of receptors independent of hormone-binding assays. These antibodies have been valuable both for experimental work and for detection of receptors in clinical breast cancer specimens.(More)
We performed a randomized double-blind study to determine the efficacy of doxycycline (100 mg daily) in preventing travelers' diarrhea among 39 Peace Corps volunteers during their first five weeks in Kenya. The volunteers took either doxycycline or placebo for three weeks and were observed for an additional two weeks. Nine of 21 taking placebo and one of 18(More)
BACKGROUND Acute Mountain Sickness (AMS) is a multi-system disorder that is characterized by headache, anorexia, nausea, vomiting, insomnia, lassitude, and malaise. The syndrome is common in unacclimatized low altitude residents who rapidly ascend to terrestrial elevations exceeding 2,500 m. AMS may be a manifestation of hypoxia-induced cerebral edema(More)