Abstract: Geographic studies of port morphology—descriptions of land use patterns and functions, of land use changes, of the evolution of form, and of the regularities in that form—have failed to develop qua...

Abstract: An ejection port cover for a firearm which moves in pure rotation about an axis parallel to the bore of the firearm. The port cover is held about this axis and is oriented in the "open port" and "closed port" rotational position for proper alignment of a port cover cam with associated cam pin means on the reciprocating slide assembly since the port cover is shorter than the stroke of the slide assembly that engages and causes rotation of the port cover.

Abstract: : A fundamental problem in mine warfare defense is to deploy mine countermeasure resources and to route supplies so that shipping losses are minimized. The shipping losses at a port are a function of the mining attack, the quantity and duration of countermeasure efforts, and the amount shipped from the port. Models and solution algorithms are developed in this paper to optimally apportion scarce countermeasure resources when the quantity of supplies shipped out of each port is not subject to control and for the case when one can control both flow routing and countermeasures deployment. When the shipping schedule is fixed, the models are special cases of minimum cost network flow problems. For the more general problem, an enumeration algorithm is developed and computational results presented.

Abstract: (1976). The Port of Hong Kong: A Survey of Its Development. Economic Geography: Vol. 52, No. 1, pp. 91-92.

Abstract: In a recent paper Wanhill [1] described a method for determining the number of berths that should be provided at a port so that the total usage cost would be minimized. However, in many situations a port will provide a single specialized berth to cater for a particular type of cargo; for example, the unloading of iron-ore at a steelworks or the discharge of oil at a general cargo port. The problem then is not one of deciding on the number of berths to be built but rather that of finding the optimal cargo handling capacity for the single berth available. A model is presented in this paper indicating how such a decision may be made, and two examples give approximate lower and upper bounds for the optimal capacity for many practical cases. A second paper will show how a theoretical model often has to be modified in the light of particular circumstances.

Abstract: A switching connector for pipes and the like includes a support component and a carrier component mounted on the support component for turning about an axis. The carrier component has a passage which extends between two axial ends of the carrier component, and the support component has ports which communicate with a main pipe and with branch pipes, respectively. The passage has connecting ports at respective longitudinally spaced ends thereof which can be brought into and out of registry at least with the branch ports of the support components. A sealing arrangement is provided about the registering ports of the components, including at least one sealing ring about a port of one of the components and a disc-shaped contact member about at least one port of the other component and having a contact surface with which the sealing ring is in sealing contact when the ports communicate with one another. The disc-shaped contact member has an access opening which aligns with a non-registering port having the sealing ring around the same to afford access to the sealing ring for maintenance and replacement purposes. A closure may be provided for the access opening when the latter is in the support component, or the support component may include a closed housing having an access hole provided with a closure, through which access hole the access opening in the carrier component becomes accessible from the exterior of the housing. An auxiliary sealing arrangement may surround the sealing ring, being in contact with the contact surface of the contact member during switching of the connector from communication of the connecting port with one of the branch ports into registry with another branch port. Pressurized medium, such as pressurized air, can urge the sealing arrangement into sealing contact with the contact surface.

Abstract: transport wilt be the leading mode of transportation for several decades to come. The growth rate of air transport, so far as passenger traffic is concerned, will be higher than road trans- port. But as a means of transporta- tion, it will remain far behind road transport. In the case of goods traffic, growth by road transport will be the fastest, followed by air transport. Rail transport will grow but its growth rate in both passenger and goods traffic will be slow.

Abstract: : The traditional federal port policy in the United States has been one in which programs of federal agencies did not disturb the competitive relationship among ports. Modern technology combined with other factors such as environmental regulations has disrupted this policy approach. Federal agencies may affect port competition in three ways: allocation of funds for dredging or for port facilities; implementation of existing regulations as they pertain to the siting and operation of terminal facilities and their vessel movements; or formulation of new policies or programs which directly or indirectly affect ports. The federal government must acknowledge the administrative dilemma confronting the traditional approach to federal port policy, establish a unified governmental approach to port planning and development, and take the necessary steps to evaluate the future competitive impacts on ports of its actions.

Abstract: This paper is concerned with the changing pattern of activity on the urban waterfront. It examines developments in marine transportation technology and in the economic structure of the central city that have influenced the function of the urban port. Drawing upon data related to the West Side of Manhattan, the impact of the changes in cargo and passenger ship operations on the urban port is described and analyzed. A twofold strategy for public agencies to identify and understand the opportunities presented by technological change and to formulate policies for the redevelopment of the urban coastal zone is discussed.

Abstract: PURPOSE: To specially set a fuel feed nozzle into a scavenging port to prevent the deterioration of feed mixture in the case of low load operation, in a 2 cycle engine. COPYRIGHT: (C)1977,JPO&Japio

Abstract: For the social anthropologist Tasmania is an island whose original population has disappeared in the sands of time. But Australia is a country which in recent times has seen the development of a significant new civilization, to which both civil and religious monuments bear testimony. This article discusses a programme, currently under consideration, which aims to safeguard and present, in cultural terms and with a view to contemporary tourism, representative examples of this heritage.

Abstract: The study is based upon foreign transit statistics, Norwegian trade statistics by mode of transport, and custom documents from Bergen. With the present transition to extensive use of specialised and greater vessels in international shipping calling at a few large ports, an increasing part of the shipments between Norway and transoceanic countries is transhipped in large European ports like Rotterdam, Hamburg and Goteborg (Gothenburg). With the growing feeder traffic by land in recent years, the importance of Goteborg as a port of trans-shipment seems to be increasing, even for Bergen.

Abstract: A conference port for permitting simultaneous voice communication among a plurality of local stations and an external or central office line is shown. The stations may be part of a time division PBX or may be arranged as a time-sampled key telephone system having access to the same line. The conference port includes a first operational amplifier for summing the station port voltages on a capacitor during an interval that is a predetermined fraction of the resonant transfer interval. This first, or quasi-resonant, interval is sufficient to reduce the initial voltage on each of the station port sampling capacitors to a predetermined fraction of their initial level. At the conclusion of this interval the voltage on the summing capacitor in the conference port is multiplied by an appropriate factor in a second operational amplifier and is applied back simultaneously to all of the conference ports together with the signal incoming over the external or central office line. The voltage impulse, so applied, causes the signal contributed by each station port to appear at each other station port attenuated by a suitable factor, illustratively 6dB, while the incoming signal appears full strength at each station port. Accordingly, good return loss is provided at each station port and contrast between signals from stations and the incoming line is reduced via the controllable station-to-station loss.

Abstract: PURPOSE:To improve output in the case of partial load and fuel cost and prevent output lowering in the case of the whole loads, by setting turbulence generating means, which respond to engine operation condition, to the intake port of an engine.

Abstract: A support system for a gas sampler for collecting samples of gas from a plurality of laterally arranged ports and including a support rail extending outwardly from the ports to support the gas sampler for movement toward and away from said ports, an auxiliary support for the outer end of the supporting rail, a pair of laterally extending tracks and slidable couplings connecting the ends of the rail and auxiliary support to the tracks to facilitate moving the gas sampler from port to port.