Abstract: A multi-tap distribution box is disclosed in which the positions of the input terminal and the output terminal are selectable. A housing (1) has in the center portion thereof an attachment portion (5) on which main line terminals (5a, 5b, and 5c) are provided. Two terminals are located above, and on both sides of the center of, the housing (1) while the other terminal is located directly under one of the two terminals. A mother board (6) with transmission terminals (7) is mounted on the attachment portion (5) so that the transmission terminals (7) are connected to a select pair of the main line terminals. A branch unit (15) which includes a branch terminal (17) is detachably mounted on the mother board (6) on which a main body (21) with a tap board (20) is in turn mounted. When the main body (21) is mounted, an input terminal (23) provided on the tap board (20) is connected to the branch terminal (17) of the branch unit (15).

Abstract: An aluminum alloy containing magnesium (Mg) between 3.0 and 4.0 wt. %, manganese (Mn) between 0.5 and 1.0 wt. %, copper (Cu) between 0.2 and 0.6 wt. %, iron (Fe) between 0.05 and 0.4 wt. % and remaining obligatory trace elements, has an electrical conductivity after baking of 30 to 32% IACS, a yield strength of 320 MPa or more and a ratio of decrease in buckling strength after retort-treatment to that immediately after manufacturing the can end of less than 10%. This an aluminum alloy sheet for can ends has an excellent corrosion resistance, complete lack of stress corrosion cracking, or age softening resistance, maintains the a high buckling strength obtained subsequent to the manufacture of a can, even after retort treatment and storage at room temperature. The aluminum alloy sheet of this invention is particularly suitable for use as a can end for non-carbonated beverages and has the potential for even thinner aluminum alloy sheet formation.

Abstract: A method for manufacturing rare earth-iron magnetostrictive materials such as Tb.sub.x Dy.sub.1-x Fe.sub.2-w wherein 0.20.ltoreq.x.ltoreq.1.00 and 0.ltoreq.w.ltoreq.0.20. Rare earth and iron raw materials are continuously fed into a plasma arc melting furnace having a plasma arc torch and a water-cooled bottomless elongated mold located beneath the torch. The raw materials are melted together by plasma flames to form a pool of a molten alloy at the top of the mold. Heat is removed from the melt by water cooling through the mold, thereby causing the melt to solidify progressively from the bottom thereof. The solidified body is continuously pulled down in the mold.

Abstract: A method and apparatus for making an inference using frame-based knowledge representation in which each slot is accompanied by information regarding a quantitative correspondence between its slot value and the frame to which it belongs. This makes an accurate comprehension of what can be inherited possible so an inference can be carried out with consistent accuracy.

Abstract: An inductive inference apparatus comprises an input section for inputting a proposition, conditions for the proposition, and the tendency of each condition, a storage section for storing the proposition, and necessary and sufficient conditions of the proposition, a condition detecting section for forming the necessary and sufficient conditions for the truth or falsity of the proposition in accordance with the input proposition, the input conditions, and the input tendency of each condition, a judging section for, with respect to an example in which the truth or falsity of the proposition is unknown, judging the truth or falsity of the proposition using already stored necesary and sufficient conditions, and a control section for, when the truth or falsity of the proposition in a new example input to the input section is known, supplying the conditions of the proposition and the tendency of each condition to the condition detecting section to store the necessary and sufficient conditions formed by the condition

Abstract: A communications network has a plurality of customer terminals and a single center terminal which are coupled through communication lines. A large scale integrated circuit is operatively coupled to each terminal. The integrated circuit device has enciphering and deciphering functions and has a recording device. When a transaction request message is sent from one customer terminal to the center, the transaction request message is enciphered by the integrated circuit device, and the enciphered message is sent to the center. In order to increase the transaction verification capability, the transmission message is recorded, in association with encryption of the transmission message, in an area of the recording device which can be accessed from outside only for readout. In order to further improve the transaction verification capability, the response message is enciphered by the integrated circuit device in the center.

Abstract: A communications network system is constructed by connecting a plurality of customer terminals to one central terminal via communication lines. Enciphering devices and a deciphering device, such as IC (integrated circuit) cards, are provided for the terminals. In order to achieve a digital signature for a transaction message sent from a customer to the center, the message is enciphered according to a prescribed enciphering algorithm using a key word that can specify the sender and the transaction. At the central terminal the enciphered message is deciphered according to a prescribed deciphering algorithm that is different from the enciphering algorithm using a key word which can specify the sender and the transaction. The key data and encipering and deciphering algorithms are sealed in the enciphering and deciphering devices such that they cannot be accessed from the outside.

Abstract: An individual discrimination card in accordance with the present invention includes a memory for memorizing the data which represents the frequency of erroneous input of a secret code data. The erroneous input frequency data comprises a first data and a second data. The individual discrimination card judges whether or not a secret code data is an erroneous input, and includes as well a microprocessor which lets the memory unit to memorize the first data when the secret code data is an erroneous input, while lets the first data in the memory unit to be rewritten to the second data when the secret code data is a legitimate one.

Abstract: A control system for a four wheel drive vehicle is disclosed which either prevents the transmitting of the power of an internal combustion engine incorrectly or gives a warning signal indicative of incorrect operation. The control system includes two sensors for separately detecting the rotational frequency of front and rear propeller shafts, a control circuit for determining the rotational frequency difference between the front and rear propeller shafts and for generating control signals relative to a predetermined set point. A contact or a switch is operated by the control circuit. In one embodiment, an alarm buzzer and an alarm lamp are also provided.

Abstract: A transfer gear unit for use in an automobile comprises a first changeover device for selecting one of a two-wheel drive mode and a four-wheel drive mode at a time, a second changeover device for selecting one of a high-speed gear train, a neutral gear train and a low-speed gear train at a time, a first fork shaft selectively movable into a two-wheel drive position and a four-wheel drive position for actuating the first changeover device, a second fork shaft selectively movable into a high-speed gear position, a neutral gear position and a low-speed gear position for actuating the second changeover device, and a switch mechanism for indicating the four-wheel drive mode. The switch mechanism includes a switch and switch actuator means operable in response to operation of the first and second fork shafts for actuating the switch when the first fork shaft is in the four-wheel drive position and the second fork shaft is in the high-speed gear position or the low-speed gear position.

Abstract: An apparatus for generating a tomographic display projects X-ray beams in a fan-shaped array through a subject in many directions within a plane, detects how much each X-ray has been absorbed by the subject, and obtains the X-ray absorption coefficient of a given point of the subject existing within the plane. X-ray absorption data are back-projected onto a reference line existing in the plane are accumulated in the pixels defining the subject under examination, are distributed onto said given point of the subject, to obtain the distribution of X-ray absorption coefficients in said plane of the subject.

Abstract: In a computed tomography system using radiation, a large number of radiation beams are projected into a selected slice-like sectional portion of a subject to be reconstructed, in various directions. A profile of measured projection data is obtained from the radiation beams penetrated in parallel at each given angular interval. The profile of measured projection data thus obtained is subjected to a filtering operation to produce profiles of first modified projection data. The profile of modified projection data is recasted at properly selected intervals to produce second modified projection data. This results in a remarkable reduction of the amount of weight coefficients required in an interpolation to calculate the modified projection data for a large number of picture elements defined in matrix fashion on the sectional portion.

Abstract: In a method and an apparatus for performing computed tomography using radiation, the apparatus includes a data selecting unit which divides into a plurality of groups and stores the projection data signals provided by a multitude of radiation beams being projected along several different directions through a slice to be imaged in a subject and penetrating the slice from the external circumference of it with each of the groups corresponding to the beams penetrating along selected directions within a specific scan sector less than 180.degree.

Abstract: An apparatus and method for tomographic analysis comprising a detecting system for detecting a number of radiation beams having penetrated a sectional area of a subject and producing projection data signals; a CPU and a memory for applying a filter function to the projection data signals by a convolution integration or by a computational technique included in a filtered-back projection, thereby calculating modified projection data signals, and conducting back projection operations only with respect to points in a partial region or subsection of the sectional portion area by means of the modified projection data, thereby calculating the radiation beam absorption coefficients at said points, the integral operation used in the calculation of the modified projection data signals being limited to an interval in which the quality of an image of said partial region or subsection to be displayed can exclusively be improved by the filter function; and a display unit for displaying the image of the partial region on th