Pacific Shipyards (United States)

Ushbu maqolada kiberxujumlardan saqlanish muammosining psixologik tadqiqotlarda nazariy tadqiqi yoritib berilgan. Shu bilan birgalikda Shuningdek, kiberxujumlarning shaxsga psixologik ta’siri psixologik tadqiqotlarda asosiy mohiyatni belgilab beruvchi mezon sifatida ishlatilishi tahlil qilib berilgan. Kiberxujumlardan saqlanishga doir psixologik tavsiyalar keltirilgan

ABSTRACTThe intent of this paper is to update my previous paper, published in the May 1983 issue of the Naval Engineers Journal, entitled “Production Line Concept for Overhauling Submarines, Its Time Has Come.”As stated in that paper, the fundamental methodology for overhauling submarines has remained virtually unchanged ever since the first overhaul of the first nuclear submarine. The production line concept (PLC) embraces a new methodology by taking advantage of an unprecedented opportunity evolving from our newest class of submarines. That new methodology, which leans heavily on applying production line techniques, is made possible because of the large number of highly standardized submarines in that class.When the first paper was published, PLC was an ambitious vision which appeared to be cross‐threaded with reality. Today, the foundation for that vision is firmly in place, PLC is fast gaining support, and the obstacles in the way of implementation are known and manageable.A preliminary analysis of the benefits of PLC indicate a reduction of 30% or more in the cost and time for overhauling submarines. Also, there are many important intangible benefits discussed that appear to be as beneficial to the Navy as monetary savings.With a new class of submarines, the Navy now has a rare opportunity to substantially improve the submarine overhaul process by adopting PLC. If implemented, PLC will reverse current adverse cost trends, increase submarine on‐line time, improve the overall posture of the submarine Navy, and strengthen the lifeline of naval shipyards.

Although cycloidal propulsion is well known and has been widely accepted in European service for many years, its applications in the United States are relatively rare. The reasons for selecting this unique propulsion concept for the two new ferries now under construction for Manhattan-Staten Island service are described in this paper, as well as the design and construction problems encountered.

Abstract Hydraulic servomechanisms have come into wide use in recent years as a result of the low inertia of hydraulic servomotors compared to electric servomotors of the same power rating. This paper discusses the theory of operation, static characteristics, and dynamic characteristics of some hydraulic components that have been used for many years in regulator applications. Previously, the dynamics of these components were not of great importance because of the slowness of the processes controlled. The important considerations were static gain and static accuracy. The dynamic characteristics have been investigated more recently as a result of the high dynamic-performance demands of servomechanism applications. Dynamics are considered from the frequency-response approach.