Abstract: A designing and managing system for a communications network having a physical network and a logical network includes a designing system adaptable to a traffic fluctuation through a simple procedure, and a managing system for quickly selecting a suitable communications path in response to a path connection request and a path capacity change request. The designing system has units for respectively determining the topologies of the physical network and the logical network independently of traffic conditions, and units for setting the path capacities of the physical network and the logical network, respectively, based upon a long-term traffic demand and an actual request.

Abstract: A process information generating section produces a communication process information necessary for a communication process. A status predicting section receives a statistically-processed status information from another node when the status of this another node has changed, and produces a prediction information predictive of the statuses of all other nodes, excluding this local node, based on the status information. A routing control section performs control to select a communications path which minimizes a network load, based on the communication process information generated by the process information generating section and the prediction information obtained by a status predicting section.

Abstract: An IC retainer in an IC socket comprise a lock lever for engaging and disengaging from an IC or an IC carrier in accordance with upward and downward motion of a cover, a turnable lever for transforming the upward and downward motion of the cover to upward and downward motion of the lock lever, a mechanism for shifting the lock lever to a backward disengaging position when the lock lever is moved upwardly and to a forward engaging position when the lock lever is lowered, and a spring arrangement for applying a downward turning force to an external end portion of the turnable lever while applying a lowering force to that side of the lock lever on which the external end portion of the turnable lever acts. An internal end portion of the turnable lever opposite to that end portion on which the spring arrangement acts is turned upwardly by the downward turning force applied to the external end portion of the turnable lever, so that an upwardly directed force is applied to the cover.

Abstract: An IC carrier comprising a case for receiving an IC, a carrier body for receiving the case, and a positioning device for correctly positioning the IC which is received in the case.

Abstract: An IC package receptacle is disclosed in which, as an actuator is pushed down, a pushing surface thereof pushes down pressure bearing portions of a plurality of contacts against an elastic force to bring the contacts into and out of contact with leads of an IC package. To cope with an increase of the number of contact poles, the pushing load is reduced by providing a plurality of pushing load peaks brought about by different pushing surfaces. The contacts are grouped into a plurality of unit groups of contacts. The individual groups of contacts are pushed by the different pushing surfaces, respectively, thus providing a deviation between pushing load peaks and provided by the pushing surfaces on the respective unit groups of contacts.

Abstract: In an ATM switching system responsive to a call setup request from each of B-ISDN terminals, a band for an accepted call is estimated in accordance with fuzzy decision on the basis of the fact that the network traffic characteristics can be determined empirically. Therefore, it is possible to estimate the band without any complicated band estimation calculations, improve the call acceptance processing response speed, and further improve the availability efficiency of the network transmission line. In the consequents of the fuzzy rules in particular, the respective band estimation values are represented by the respective input functions, or particularly by the linear couplings coupled by predetermined linear parameters of respective Inputs, thus improving the descriptive capacity of the rules.

Abstract: A call admission control system in an asynchronous transfer mode exchange includes a unit for describing attribute parameters of a cell from the subscriber terminal; a unit for calculating, based on the attribute parameters, the average and the dispersion of the traffic speeds of the call; a unit for managing data of the average and the dispersion on each output route and data relating to each subscriber; and a unit for calculating the total average and the total dispersion of the data speeds on the selection output route; and a unit for calculating prediction values of cell abandon rate and end-to-end delay based on the average and the dispersion on the selected output route calculated by the total average and dispersion calculating unit, and for comparing the prediction values with the required service quality of cell discard rate and end-to end delay, for determining whether or not the requesting call may be connected.

Abstract: A call admission control system in an asynchronous transfer mode exchange includes a unit for describing attribute parameters of a call from the subscriber terminal; a unit for calculating, based on the attribute parameters, the average and the dispersion of the traffic speeds of the call; a unit for managing data of the average and the dispersion on each output route and data relating to each subscriber; and a unit for calculating the total average and the total dispersion of the data speeds on the selected output route; and a unit for calculating prediction values of cell abandon rate and end-to-end delay based on the average and the dispersion on the selected output route calculated by the total average and dispersion calculating unit, and for comparing the prediction values with the required service quality of cell discard rate and end-to-end delay, for determining whether or not the requesting call may be connected.

Abstract: An optical fiber of heat resistance, low-temperature resistance, flexural resistance, water absorption resistance, chemical resistance, etc., is provided by comprising a composition in which a core component comprises a polycarbonate or a silica type glass, a clad component comprises a graft-modified poly (4-methyl-1-pentene).

Abstract: A self-routing switching system including a route setting unit (10) which receives transmission information and identification information given from incoming lines and forms, from the identification information, control information for setting a path to one outgoing line to which the transmission information is to be transferred, and a self-routing speech path (20) which can form a plurality of paths and which selects the most suitable one therefrom by the control information and autonomously guides the transmission information to the destination outgoing line.

Abstract: A mandrel suitable for use in the production of a rubber hose formed from a composition comprising:(i) at least one member selected from the group consisting of(A) an ethylene-alpha-olefin random copolymer having an ethylene content of 10 to 95 mol % and a degree of crystallinity, based on X-ray determination, of 0 to 20%,(B) a propylene - C.sub.4 to C.sub.10 alpha-olefin random copolymer having a propylene content of 50 to 80 mol % and a crystal fusion heat amount, determined by a differential scanning calorimeter, of 0 to 80 Joule/g, and(C) an oligomer having the general formula: ##STR1## wherein n and p are independently zero or an integer, m is zero or 1, and R is ##STR2## and (ii) 98% to 30% by weight of a 4-methyl-1-pentene polymer, wherein the weight ratio of the component (i) to the component (ii) is from 2:98 to 70:30.This mandrel has excellent dimensional stability, durability, heat resistance, and releasability.

Abstract: An IC socket has a socket body having an IC package accommodating space therein; an IC mounting table disposed in the IC package accommodating space and adapted to support an IC package thereon; and a plurality of contacts planted in a socket body portion at the periphery of the mounting table; the plurality of contacts each having a resilient contact piece, IC terminals of the IC package, when the IC package is supported on the mounting table, being able to contact with the resilient contact pieces of the contacts, wherein the IC package mounting table is formed with a plurality of contact positioning grooves for receiving the resilient contact pieces therein, so that the resilient contact pieces are regulated by a wall for defining the positioning grooves.

Abstract: A process for production of an essentially non-oriented surface-roughened film or sheet comprising a crystalline homopolymer or crystalline copolymer of 4-methyl-1-pentene having a surface roughness of 0.5 to 10 micrometers, said process including the following steps (1) preparing a molten composition comprising a homopolymer or copolymer of 4-methyl-1-pentene, (2) extruding the molten composition to form a film or sheet, and (3) placing the film or sheet in contact with a roller having a roughened surface or passing the film or sheet through a pair of rollers, at least one of which has a roughened surface; and the use of the above-mentioned surface roughened film or sheet for the manufacture of single-sided metal clad laminates.

Abstract: An essentially non-oriented surface roughened film or sheet comprising a homopolymer or copolymer of 4-methyl-1-pentene having the surface roughness of 0.5 to 10 micrometers; a process for production of the above-mentioned surface roughened film or sheet of claim 1 comprising the following steps (1) preparing a molten composition comprising a homopolymer or copolymer of 4-methyl-1-pentene, (2) extruding the molten composition to form a film or sheet, and (3) placing the film or sheet in contact with a roller having a roughened surface or passing the film or sheet through a pair of rollers, at least one of which has a roughened surface; and the use of the above-mentioned surface roughened film or sheet for the manufacture of single-sided metal clad laminates.

Abstract: An IC socket includes a socket body which has an IC package placing area and resilient contacts around the IC package placing area, a cover pivotally attached to the socket body, a lock member pivotally attached to either the socket body or the cover for locking/unlocking the cover relative to the socket body, and IC lead pressing means movably mounted on the cover. The IC lead pressing means is provided integrally with pads for pressing the IC leads against the resilient contacts and is adapted to effect self-adjustment of its own movement so that the pads come into uniform contact with the IC leads.

Abstract: An oil separator element is housed in a casing of an oil separator and consists of alternatively aligned perforated plates and plate type filter members. Adjacent perforated plates are respectively formed with perforated sections which are located opposite to each other relative to an imaginery vertical plane containing a casing longitudinal axis. A space between neighboring perforated plate and filter member is larger on the downstream side than that on the upstream side. Additionally, each filter member is formed of a three dimensional porous material having an inner structure by which oil mist can effectively coalesce.

Abstract: A method of producing partially crosslinked rubber-resin composition comprising directly feeding a pelletized peroxide-curable olefin copolymer composition, a peroxide-decomposing polyolefin resin and an organic peroxide compound to a twin-screw extruder under specific extruding conditions of weight of the copolymer rubber and specific energy at extrusion.

Abstract: Dynamically partially cured composition comprising a peroxide-curable olefin copolymer rubber (such as EDPM) and a peroxide-decomposing olefin plastic (such as PE and PP) is improved by effecting the dynamic heat-treatment with addition of a peroxide-non-curable hydrocarbon rubber (such as PIB) and/or a mineral oil softener (process oil). The dynamic heat-treatment is preferably carried out not only in the presence of an organic peroxide but also in the presence of divinyl benzene. The elastomeric composition is thermoplastic and, with or without further blending with an olefin plastic, is processable by techniques conventionally used for thermoplastic resins. This elastomer composition and blends of the elastomer composition and olefin plastic can be used for producing foamed product in combination with decomposition type foaming agent (such as azodicarbonamide).

Abstract: Dynamically partially cured composition comprising a peroxide-curable olefin copolymer rubber (such as EDPM) and a peroxide-decomposing olefin plastic (such as PE and PP) is improved by effecting the dynamic heat-treatment with addition of a peroxide-non-curable hydrocarbon rubber (such as PIB) and/or a mineral oil softener (process oil). The dynamic heat-treatment is preferably carried out not only in the presence of an organic peroxide but also in the presence of divinyl benzene. The elastomeric composition is thermoplastic and, with or without further blending with an olefin plastic, is processable by techniques conventionally used for thermoplastic resins. This elastomer composition and blends of the elastomer composition and olefin plastic can be used for producing foamed product in combination with decomposition type foaming agent (such as azodicarbonamide).