نتایج جستجو برای: operating
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The SLAC electron-positron colliding-beam project SPEAR was completed and stable colliding beams were achieved in April, 1972, after a construction period of approximately 20 months. Since that time, an active experimental high-energy physics program has begun in addition to a program of continued studies of accelerator physics. This paper discusses only the accelerator physics results as well ...
Parallel operating systems are the interface between parallel comput
Since the discovery of the reference monitor concept during the development of Multics, there have been many projects to retrofit existing commercial operating systems with a true reference monitor implementation. Successful, commercial operating systems can have a large customer base and a variety of popular applications. As a result, those customers with strong secrecy and integrity requireme...
Robustness is becoming more important as critical software increasingly affects our daily lives. Success in building robust software requires understanding and improving the robustness of the operating system API, but to date there has been no accurate, reproducible way to measure robustness. This paper presents the first full-scale, quantitative measurements of operating system robustness. Eac...
Indiana University is operating a Low Energy Neutron Source which provides cold neutrons for material research and neutron physics and MeV energy for the neutron radiation effects studies. Neutrons are being produced by a 13 MeV proton beam incident on a Beryllium target. The LENS Proton Delivery System (PDS) is routinely operating at 13 MeV and 25 mA at 1.8% duty factor. The RF system, consist...
The intention of this writing is to introduce the reader to problems, requirements and design issues of distributed operating systems. After introducing the main motivations, which lead to distributed operating systems and defining what is meant by a distributed operating systems, this paper takes a deeper look into what transparency, reliability, flexibility and performance of those systems im...
The proper performance of micro-manipulative techniques depends upon three main factors: a good viexv of the procedure; properly designed tools wvhich can be held in the hand yet have accurate and efficient working ends; a relaxed position so that the operator avoids spending energy fighting against gravity. Mluch thought and experience is being displayed in the introduction of microscopes and ...
UNIX is a registered trademark of X/Open in the United States and other countries. FreeBSD and the FreeBSD logo used on the covero ft his book are registered and unregis-tered trademarks of the FreeBSD Foundation and are used by Pearson Education with the permission of the FreeBSD Foundation. Manyo ft he designations used by manufacturers and sellers to distinguish their products are claimed as...
The Newton MessagePad Personal Digital Assistant (PDA) is the first in a class of devices distinguished by their pen-based user interface, communications capability, small size, and low cost. A PDA operating system needs to support the simultaneous demands of user interface, applications, and communications. It must operate in an environment that has little main memory, no secondary storage, an...
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