Abstract: A path (different power-supply path) in which verification objective paths pass through two or more power domains is searched from a netlist and power-supply information, and delay-coefficient additional determination is performed in the different power-supply path. In this step, from voltage conditions in each power domain, a voltage condition under which the timing analysis result is most negative is detected, it is determined whether or not the delay coefficient is added for the voltage condition, and the delay coefficient is added. When the delay coefficient is added, the delay coefficient obtained in consideration of the power-supply voltage variation for the delay of the cell belonging to the different power-supply path is extracted from the delay-coefficient information, and is added to the delay value calculated based on the library. Then, based on the delay value to which the delay coefficient is added, the static timing verification is performed.

Abstract: A texturized, combined polyester multifilament yarn formed from two types of polyester multifilaments FYA and FYB different in polymer chemical composition from each other and appropriately intermingled with each other, in which yarn, the multifilaments FYB have an average filament length in straightened form of 8 to 40% longer than that of the multifilaments FYA, the coefficient of variation (CVA) of the filament length of FYA is 3% or less, and coefficient of variation (CVB−A) in difference between the individual filament lengths of the FYB and the average filament length of the FYA is 10 to 20%. The yarn exhibits a high bulkiness and a large filament yarn difference and is free from slippage between the sheath FYB layer and the core FYA portion.

Abstract: An easily producible electroconductive conjugate fiber having an excellent electroconductivity and a high whiteness includes at least one non-electroconductive filamentary segment (A) formed from a fiber-forming polymeric material and at least one electroconductive filamentary segment (B) incorporated with the segments (A) so as to form, for example, a core-in-sheath type or bimetal type conjugate fiber, and including a thermoplastic polymeric matrix (a) and a plurality of electroconductive multilayered particles (b) dispersed in the matrix (a), having an average size of 0.1 to 2.0 .mu.m and each having (i) a core particle of a metal component, (ii) an undercoat layer formed from tin oxides on the core particle and (iii) an uppercoat layer formed from a mixture of indium oxides with tin oxides on the undercoat layer (ii), and optionally surface-treated with a silane compound, for example, vinyl tri-C.sub.1-5 alkoxysilane, or divinyl di-C.sub.1-5 alkoxysilane.

Abstract: An improved copolyester fiber capable of being dyed with cationic dyes and having an excellent brightness, heat resistance and a satisfactory mechanical strength comprises a copolyester resin comprising a polymerization product of at least one aromatic dicarboxylic acid compound, at least one alkylene diol compound and at least one quaternary phosphonium organic sulfonate of the formula (I): ##STR1## wherein A=an aromatic or aliphatic radical, X.sup.1 =H or an ester-forming organic radical, X.sup.2 =an ester-forming organic radical, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 =an alkyl or aryl radical, n=1 or more, and having an [.eta.].sub.f of 0.5 or more, the copolyester fiber having a silk factor of 25 or more and exhibiting the number of scission of backbone chains of the copolyester molecules of 140.times.10.sup.23 or less per 10.sup.6 g of fiber when wet heat-treated in a solution of 0.4 g/l of acetic acid in distilled water at 130.degree. for 60 minutes.

Abstract: A polyester composition having an enhanced melt-spinnability and processability and useful for producing polyester fibers having excellent mechanical properties and whiteness, comprises (A) a polyester resin derived from esterification or interesterification and polycondensation of a diol component with an acid component which comprises a terephthalic acid, 0.1 to 20 molar % based on the amount of the terephthalic acid, of a naphthalene dicarboxylic acid compound and/or diphenyl dicarboxylic acid compound, and 0.01 to 20 molar % based on the amount of the terephthalic acid, of a p-hydroxybenzoic acid compound and/or benzoic acid compound and/or 0.005 to 0.15 molar % based on the amount of the terephthalic acid, of at least one member selected from alkali and alkaline earth metal salts of organic carboxylic acids; and (B) 0.01 to 3% based on the weight of the polyester resin (A), of titanium dioxide particles dispersed in the polyester resin (A), having an average size of 0.5 .mu.