摘要:
Provided is a test apparatus that measures a peak in a current supplied to a device under test via a transmission path which transmits power from a power supply to a device under test, the peak including a frequency component higher than a frequency corresponding to a product of an inductance component from the power supply to the device under test and a capacitance component between the transmission path and a ground potential, and judges acceptability of the device under test based on the peak measured by the current measuring section.
摘要:
A system management apparatus for managing a computer system receives plug-in distribution data from a plug-in distribution apparatus. The plug-in distribution data comprises plug-in definition information and template definition information. The system management apparatus uses the plug-in definition information to acquire information from the management target apparatus, and determines whether or not to issue an alert based on the template definition information. The distribution of the plug-in and the template at the same time means that the user can avoid confusion regarding the threshold setting.
摘要:
A method, computer, and recording medium storing a program are provided which, based on local optimal solutions, more efficiently calculate an optimal global optimal solution in a global operating area. System calculates the global optimal solution by solving, using a genetic algorithm based on the local optimal solutions and the initial values, an equation, which should be satisfied by the plurality of design variables, by obtaining the plurality of combinations of design variables composing local optimal solutions for each design variable respectively calculated for each of a plurality of combinations of a plurality of operating states, and by obtaining initial values for the plurality of combinations of design variables used for calculating the global optimal solution.
摘要:
An optical component comprises an optical transmission element (e.g., an optical lens) whose circumferential wall partially joins a metal holder via a joining material (e.g., a low melting point glass), wherein stress is normally applied to the optical transmission element in a compression direction when joining the metal holder. The optical transmission element is inserted into a through hole of the metal holder, and the joining material is kept in a bank actualized by a tapered portion formed in proximity to one end of the through hole of the metal holder. This prevents tensile stress from being applied to the optical transmission element; thus, it is possible to avoid the occurrence of cracks and separations in the optical transmission element; and it is possible to avoid the occurrence of errors in optical characteristics, regardless of variations of the environmental temperature, so that, the optical component is improved in reliability.
摘要:
A first branched optical waveguide and a second branched optical waveguide, to constitute a Mach-Zehnder type optical waveguide, are formed at the surface of a substrate. A first ground electrode, a signal electrode and a second ground electrode are provided on a buffer layer formed on the substrate. The second ground electrode is partially cut away and divided, to form a ditch therein, so that the modulating electrode composed of the signal electrode, the first and the second ground electrodes are substantially symmetrized on the center line between the first and the second optical waveguides. Then, the ratio (d2/d1) of the distance d2 between the signal electrode and the second branched optical waveguide to the distance d1 between the signal electrode and the first electrode is set within 3.5-7.5.
摘要:
A fault analysis method and apparatus which is able to improve the reliability of fault analysis of semiconductor integrated circuit. In case of supplying a test pattern sequence having a plurality of test patterns to the semiconductor IC, an analysis point whose electric potential changes according to the change of supplied test pattern is placed corresponding to the test pattern sequence. Then, a transient power supply current generated on the semiconductor IC according to the change of the test pattern is measured and determined whether the measured transient power supply current is abnormal or not. A defection point is presumed based on the test pattern sequence where the transient power supply current is abnormal, and the analysis point placed corresponding to the test pattern sequence.
摘要:
A biological process for predominantly producing an optically active .alpha.-hydroxycarboxylic acid having a phenyl group directly from a racemic .alpha.-hydroxynitrile or a mixture of an aldehyde corresponding to the nitrile and prussic acid as a substrate is disclosed, comprising reacting a microorganism belonging to the genus Gordona with the substrate in a neutral to basic aqueous medium. A desired optically active .alpha.-hydroxycarboxylic acid having a phenyl group can be obtained quantitatively at a high optical purity.
摘要:
A large diameter high strength hot rolled steel bar consisting of a low alloy steel having a carbon content of 0.3 to 0.9% and a metallurgical structure with a interlammelar spacing of 0.05 to 0.15 .mu.m, and having a diameter of at least 20 mm, a tensile strength of at least 120 kg/mm.sup.2 and a reduction of area of at least 20% is produced by a process comprising cooling a hot rolled steel bar at a constant rate, characterized by carrying out the cooling in such a controlled manner that the perlite transformation is started at a temperature of ranging from Tc to (Tc+40.degree. C.) wherein Tc is the critical temperature at which a cooling curve at a constant rate is tangent to the perlite transformation starting line of the continuous cooling transformation curve and the maximum temperature during the transformation is suppressed to at most (Tc+80.degree. C.).
摘要:
Provided is a test apparatus that tests a device under test, including a power supply that generates supply power supplied to the device under test; a transmission path that transmits the supply power generated by the power supply to the device under test; a high-capacitance capacitor that is provided between the transmission path and a ground potential; a low-capacitance capacitor that has a lower capacitance than the high-capacitance capacitor and that is provided between the transmission path and the ground potential at a position closer to the device under test than the high-capacitance capacitor is to the device under test; an intermediate capacitor that is provided between the transmission path and the ground potential at a position between the high-capacitance capacitor and the low-capacitance capacitor; and a current measuring section that measures current flowing through the transmission path between the intermediate capacitor and the low-capacitance capacitor.
摘要:
A method for generating a carrier residual signal and its device, in which a heterodyne optical signal used in a photometric field or an optical fiber radio communication field can be stably generated with a simplified structure. The device includes an optical modulating unit that includes a light source generating a light wave having a specific wavelength, and an SSB optical modulator. A light wave emitted from the light source enters into the optical modulating unit. A light wave emitted from the optical modulating unit includes a carrier component related to a zero-order Bessel function and a specific signal component related to a specific high-order Bessel function while suppressing signal components other than the specific signal component related to the specific high-order Bessel function, and a ratio of optical intensity between the carrier component and the specific signal component is set substantially to 1.