摘要:
In executing indivisible operations to be executed without being interrupted, pseudo-store instructions PST which do not perform data writing are used to perform a check for the presence or absence in a memory of pages necessary for execution of the indivisible operations. In the event of absence of the necessary pages, the necessary pages are pre-stored in the memory. This prevents the generation of page fault interruptions during the execution of an indivisible operation, thereby enabling the indivisible operation to be implemented on a software basis. A disable interrupt instruction is executed prior to the execution of the indivisible operation as required, and data indicating an address of the disable interrupt instruction is preserved in order to return to the disable interrupt instruction. In the case where an interruption, such as a page fault interruption, which cannot be disabled even in a interrupt disabled state is generated during data processing, processing is resumed from the disable interrupt instruction after the termination of processing for the interruption or an asynchronous interruption, with reference to the address.
摘要:
An error information saving apparatus of a computer includes at least one arithmetic unit, a plurality of storage units, and a control unit, connected to the storage units and the arithmetic unit, for controlling these units to perform a predetermined pipeline operation, wherein the storage units comprise an arithmetic register file consisting of a plurality of registers each of which can be designated as a destination operand in a statement of an operation instruction, a status flag string consisting of a plurality of flags provided in a one-to-one correspondence with the registers of the arithmetic register file, and a destination register number holding unit for sequentially saving and holding the numbers of destination registers of all operations performed while error interrupt processing generated after occurrence of an error is delayed by a predetermined time interval, each time one of the operations is completed.
摘要:
A steel for electron-beam welding according to the present invention includes at least C: 0.02% to 0.10%, Si: 0.03% to 0.30%, Mn: 1.5% to 2.5%, Ti: 0.005% to 0.015%, N: 0.0020% to 0.0060%, and O: 0.0010% to 0.0035%, further includes S: limited to 0.010% or less, P: limited to 0.015% or less, and Al: limited to 0.004% or less, with a balance including iron and inevitable impurities. An index value CeEBB obtained by substituting composition of the steel into following Formula 1 falls in the range of 0.42 to 0.65%, the number of oxide having an equivalent circle diameter of 1.0 μm or more is 20 pieces/mm2 or less at a thickness center portion in cross section along the thickness direction of the steel, and the number of oxide containing Ti of 10% or more and having an equivalent circle diameter of not less than 0.05 μm or more and less than 0.5 μm falls in the range of 1×103 to 1×105 pieces/mm2 at the thickness center portion. CeEBB=C+¼Mn+ 1/15Cu+ 1/15Ni+⅕Cr+⅕Mo+⅕V (Formula 1)
摘要:
A welding joint comprises a pair of steel materials, and a welding metal that is formed with a high-energy density beam at a butt welding portion between the pair of steel materials, wherein a transformation starting temperature Ms that is calculated by a following formula: Ms(° C.)=371−353C−22Si−24.3Mn−7.7Cu−17.3Ni−17.7Cr−25.8Mo, using a composition of mass % of the welding metal is 250° C. or less.
摘要:
A welding method for manufacturing welded structures having excellent properties to prevent the propagation of brittle fracture occurring in welded joints, characterized by the step of forming a repair weld having a greater toughness than that of a butt weld and an outer edge whose angle φ with respect to the longitudinal direction of the butt weld is not less than 10 degrees and not more than 60 degrees, by applying repair welding to a region to arrest a brittle crack in a butt-welded joint where a brittle crack is likely to propagate after removing part of the butt-welded joint, in said region, by gouging or machining.
摘要:
A firewall apparatus including plural virtual firewalls, each virtual firewall including a dependent firewall policy, is disclosed. The firewall apparatus includes: a distribution management table for managing a user name and a virtual firewall ID; a part configured to receive authentication information for network connection from a user terminal, and hold a user name included in the authentication information; a part configured to report the authentication information to the authentication server; and a part configured to receive an authentication response from the authentication server, and hold a user ID, included in the authentication response, to be provided to the user terminal. The firewall apparatus registers the user ID in the distribution management table associating the user ID with the user name.
摘要:
A powder transporting device includes: a dropping path through which developer drops; a loosening member that is arranged in the dropping path, and loosens the developer applied on an inner wall of the dropping path; a supporting portion that is provided on the inner wall of the developing path, and supports the loosening member; a rotary member that includes: a rotary center; and a reciprocation applying portion that is located at a position eccentric from the rotary center, the rotary member being arranged within the dropping path and rotationally driven; and a reciprocation applied portion that is provided on the loosening member, and is brought into contact with the reciprocation applying member, wherein the loosening member is moved along the inner wall of the dropping path by contact between the reciprocation applying member and the reciprocation applied portion while the rotary member rotates.
摘要:
A novel treatment method, for improving fatigue life, is provided that aims to resolve problems associated with conventional treatment methods for improving fatigue life of metal by reduction of stress concentration and conventional treatment methods for improving fatigue life of metal by introduction of compressive stress, that is, problems of poor efficiency in work execution, required level of skill of workers, and the impossibility of quality control due to lack of means for measuring the effect after treatment, characterized in that, for locations in metal for which fatigue is a problem, after pre-treatment is performed, ultrasonic impact treatment is performed, and thereafter, a quality assurance test is performed so as to improve the fatigue life of the metal.
摘要:
A welding method for manufacturing welded structures having excellent properties to prevent the propagation of brittle fracture occurring in welded joints, characterized by the step of forming a repair weld having a greater toughness than that of a butt weld and an outer edge whose angle φ with respect to the longitudinal direction of the butt weld is not less than 10 degrees and not more than 60 degrees, by applying repair welding to a region to arrest a brittle crack in a butt-welded joint where a brittle crack is likely to propagate after removing part of the butt-welded joint, in said region, by gouging or machining.
摘要:
A method of improvement of toughness of a heat affected zone in a multi-layer welded joint, a fillet welded joint, and a one-pass or several-pass large heat input welded joint of a steel plate is provided, that is, a method of improvement of toughness of a heat affected zone in a welded joint of a steel plate characterized subjecting a surface of a heat affected zone formed by a last pass of a multi-layer welded joint of a steel plate to impacts by an ultrasonic vibration tool or shot peening by ultrasonic vibration steel balls to thereby make an average of longitudinal axis of crystal grains up to a depth of 2 mm or more from the surface of the steel plate in the microstructure adjacent to a fusion line (FL) of a weld metal and a steel plate matrix in said heat affected zone formed by the last pass the equivalent of the crystal grain size of the steel plate matrix before the welding at a depth of ¼ of a thickness t from the surface of the steel plate.