Abstract: In a symmetric encryption apparatus according to an embodiment, a storage unit stores a symmetric key formed from a plurality of elements of a first polynomial ring. A plaintext acceptance unit accepts input of plaintext information. A plaintext polynomial generation unit generates a plaintext polynomial by embedding the plaintext information whose input has been accepted in at least one of terms of a polynomial in a subspace of the first polynomial ring. A mask polynomial generation unit generates a mask polynomial having the symmetric key as a solution based on a second commutative ring defined over the first polynomial ring. An encryption unit generates a ciphertext using the plaintext polynomial and the mask polynomial.

Abstract: To provide a double-deck elevator characterized by the fact that by increasing the story height adjustment range in the direction in which the two cars approach each other, it is possible to increase the degree of building design freedom. Two up/down cars (6), (7) arranged in outer frame (5) are connected with each other by means of pantographic mechanisms (11) that can effect an expansion and contraction operation, and the two cars (6), (7) are driven to move towards each other or away from each other by means of pantographic mechanisms (11). The pantographic mechanisms (11) are arranged in the spaces between vertical beams (5a) and the two cars (6), (7) and each has a pivot point at the longitudinal central portion of vertical beams (5a) extending vertically in outer frame (5). Due to the pantographic mechanisms (11), the story height adjustment range in the direction in which the two cars (6), (7) approach each other is not restricted.

Abstract: In a symmetric encryption apparatus according to an embodiment, a storage unit stores a symmetric key formed from a plurality of elements of a first polynomial ring. A plaintext acceptance unit accepts input of plaintext information. A plaintext polynomial generation unit generates a plaintext polynomial by embedding the plaintext information whose input has been accepted in at least one of terms of a polynomial in a subspace of the first polynomial ring. A mask polynomial generation unit generates a mask polynomial having the symmetric key as a solution based on a second commutative ring defined over the first polynomial ring. An encryption unit generates a ciphertext using the plaintext polynomial and the mask polynomial.

Abstract: An electrode material for nonaqueous electrolyte secondary battery of an embodiment includes a silicon nanoparticle, and a coating layer coating the silicon nanoparticle. The coating layer includes an amorphous silicon oxide and a silicon carbide phase. At least a part of the silicon carbide phase exists on a surface of the silicon nanoparticle.

Abstract: A negative electrode active material for a nonaqueous electrolyte secondary battery of an embodiment includes a carbonaceous material, a silicon oxide phase in the carbonaceous material, and a silicon phase in the silicon oxide phase. The negative electrode active material has a crack in the carbonaceous material, and the longest side of the crack has a length equal to or greater than ? of the diameter of the negative electrode active material.

Abstract: The invention relates to compounds of a general formula (I): wherein Ar1 is an optionally-substituted aryl or heteroaromatic group; R1 is an optionally-substituted lower alkyl, lower alkenyl, lower alkynyl or cyclo-lower alkyl group, or is an aryl, aralkyl or heteroaromatic group optionally having a substituent; R2 is a hydrogen atom, a lower alkyl group, a lower alkenyl group or a lower alkynyl group, or is an aryl, aralkyl or heteroaromatic group optionally having a substituent; R3 is a hydrogen atom or a lower alkyl group; R4 is a hydrogen atom, a halogen atom, a hydroxyl group, a lower alkyl group or a group of —N(R1k)R1m; T and U are a nitrogen atom or a methine group, etc. The compounds of the invention have excellent Weel kinase-inhibitory effect and are therefore useful in the field of medicines, especially treatment of various cancers.

Abstract: A digital signature generation apparatus includes memory to store finite field Fq and section D(ux(s, t), uy(s, t), s, t) as secret key, section being one of surfaces of three-dimensional manifold A(x, y, s, t) which is expressed by x-coordinate, y-coordinate, parameter s, and parameter t and is defined on finite field Fq, x-coordinate and y-coordinate of section being expressed by functions of parameter s and parameter t, calculates hash value of message m, generates hash value polynomial by embedding hash value in 1-variable polynomial h(t) defined on finite field Fq, and generates digital signature Ds(Ux(t), Uy(t), t) which is curve on section, the x-coordinate and y-coordinate of curve being expressed by functions of parameter t, by substituting hash value polynomial in parameter s of section.

Abstract: The present invention aims to provide a fuel cell anode, a membrane electrode assembly and a fuel cell, so as to obtain high electric power. The fuel cell anode has an electrode catalyst layer, and the electrode catalyst layer comprises a supported catalyst comprises electrically conductive carriers and fine catalytic particles supported thereon, a proton-conductive inorganic oxide supporting SiO2 on its surface, and a proton-conductive organic polymer binder. The SiO2 supported on the inorganic oxide prevents the oxide particles from growing, to ensure the high electric power. It is necessary to control the mixing ratios among the supported catalyst, the proton-conductive oxide and the proton-conductive binder in particular ranges.

Abstract: The invention relates to compounds of a general formula (I): wherein Ar1 is an optionally-substituted aryl or heteroaromatic group; R1 is an optionally-substituted lower alkyl, lower alkenyl, lower alkynyl or cyclo-lower alkyl group, or is an aryl, aralkyl or heteroaromatic group optionally having a substituent; R2 is a hydrogen atom, a lower alkyl group, a lower alkenyl group or a lower alkynyl group, or is an aryl, aralkyl or heteroaromatic group optionally having a substituent; R3 is a hydrogen atom or a lower alkyl group; R4 is a hydrogen atom, a halogen atom, a hydroxyl group, a lower alkyl group or a group of —N(R1k)R1m; T and U are a nitrogen atom or a methine group, etc. The compounds of the invention have excellent Weel kinase-inhibitory effect and are therefore useful in the field of medicines, especially treatment of various cancers.

Abstract: The carbon fibers of this invention is characterized in that irreducible inorganic material particles in a mean primary particle size below 500 nm and reducible inorganic material particles in a mean primary particle size below 500 nm were mixed by pulverizing and then, the mixture was heat treated under the reducing atmosphere and metal particles in a mean particle size below 1 ?m were obtained, and the mixed powder of the thus obtained metal particles with the irreducible inorganic material particles are included in the carbon fibers.

Abstract: A digital signature generation apparatus includes memory to store finite field Fq and section D(ux(s, t), uy(s, t), s, t) as secret key, section being one of surfaces of three-dimensional manifold A(x, y, s, t) which is expressed by x-coordinate, y-coordinate, parameter s, and parameter t and is defined on finite field Fq, x-coordinate and y-coordinate of section being expressed by functions of parameter s and parameter t, calculates hash value of message m, generates hash value polynomial by embedding hash value in 1-variable polynomial h(t) defined on finite field Fq, and generates digital signature Ds(Ux(t), Uy(t), t) which is curve on section, the x-coordinate and y-coordinate of curve being expressed by functions of parameter t, by substituting hash value polynomial in parameter s of section.

Abstract: The instant invention provides for substituted [1,2,4]triazolo[4,3-a]-1,5-naphthyridine compounds that inhibit Akt activity. In particular, the compounds disclosed selectively inhibit one or two of the Akt isoforms, preferably Akt1. The invention also provides for compositions comprising such inhibitory compounds and methods of inhibiting Akt activity, especially Akt1 by administering the compound to a patient in need of treatment of cancer.

Abstract: A digital signature generation apparatus includes memory to store finite field Fq and section D(ux(s, t), uy(s, t), s, t) as secret key, section being one of surfaces of three-dimensional manifold A(x, y, s, t) which is expressed by x-coordinate, y-coordinate, parameter s, and parameter t and is defined on finite field Fq, x-coordinate and y-coordinate of section being expressed by functions of parameter s and parameter t, calculates hash value of message m, generates hash value polynomial by embedding hash value in 1-variable polynomial h(t) defined on finite field Fq, and generates digital signature Ds(Ux(t), Uy(t), t) which is curve on section, the x-coordinate and y-coordinate of curve being expressed by functions of parameter t, by substituting hash value polynomial in parameter s of section.

Abstract: A decryption apparatus includes a section assignment unit which assigns a section D to a plurality of encrypted texts Fi(x,y,t) (i=1, . . . , k), a one-variable polynomial arithmetic unit which subtracts L pairs of polynomials he(t) and hw(t) after the assignment, and a greatest common divisor arithmetic unit which obtains the greatest common divisor ?(t) of L polynomials gj(t)(=he(t)?hw(t)) (j=1, . . . , L) as a result of the subtraction.

Abstract: The invention is to provide a novel anticancer agent or sensitizer for cancer chemotherapy or radiotherapy. A compound of a general formula (I): wherein A means an aryl group or a heteroaryl group, or a group of a formula (a): R1 means a —(C?O)aOb(C1-C6)alkyl group, a —(C?O)aOb(C2-C6)alkenyl group, a —(C?O)aOb(C3-C6)cycloalkyl group, an aryl group or a heteroaryl group; R2 and R3 each mean a hydrogen atom, a halogen atom, a hydroxyl group, a carboxyl group, a —(C?O)aOb(C1-C6)alkyl group or a group of —(C?O)aN(R1e)R2e; R4 means a hydrogen atom or a (C1-C6)alkyl group, and the like have an excellent Wee1-kinase-inhibitory effect, and are therefore useful in the field of medicine, especially in the field of various cancer treatments.

Abstract: The compounds of Formula D are of the class of triazolo-pyrido-pyrazines which are inhibitors of AKT useful for the treatment of cancer

Abstract: The invention is to provide a novel anticancer agent or sensitizer for cancer chemotherapy or radiotherapy. A compound of a general formula (I): wherein A means an aryl group or a heteroaryl group, or a group of a formula (a):; R1 means a —(C?O)aOb(C1-C6)alkyl group, a —(C?O)aOb(C2-C6)alkenyl group, a —(C?O)aOb(C3-C6)cycloalkyl group, an aryl group or a heteroaryl group; R2 and R3 each mean a hydrogen atom, a halogen atom, a hydroxyl group, a carboxyl group, a —(C?O)aOb(C1-C6)alkyl group or a group of —(C?O)aN(R1e)R2e; R4 means a hydrogen atom or a (C1-C6)alkyl group, and the like have an excellent Wee 1-kinase-inhibitory effect, and are therefore useful in the field of medicine, especially in the field of various cancer treatments.

Abstract: To provide a double-deck elevator characterized by the fact that by increasing the story height adjustment range in the direction in which the two cars approach each other, it is possible to increase the degree of building design freedom. Two up/down cars (6), (7) arranged in outer frame (5) are connected with each other by means of pantographic mechanisms (11) that can effect an expansion and contraction operation, and the two cars (6), (7) are driven to move towards each other or away from each other by means of pantographic mechanisms (11). The pantographic mechanisms (11) are arranged in the spaces between vertical beams (5a) and the two cars (6), (7) and each has a pivot point at the longitudinal central portion of vertical beams (5a) extending vertically in outer frame (5). Due to the pantographic mechanisms (11), the story height adjustment range in the direction in which the two cars (6), (7) approach each other is not restricted.

Abstract: A WMMR (301) is used as a wireless relay node in a wireless network connected to a backbone network including a multicast data packet distribution source. A route control unit (N03) establishes a multicast data packet transfer route based on unicast routes by making reference to an SWGT (20) based on received route control information and adding an entry to a multicast routing table (MRT) (10). A transfer control unit (N04) makes reference to the MRT (10) and makes a transfer to a directly connected transfer destination along the established multicast data packet transfer route by unicasting capable arrival confirmation and retransmission control as a transmission scheme in the data link layer.

Abstract: A digital signature generation apparatus includes memory to store finite field Fq and section D(ux(s, t), uy(s, t), s, t) as secret key, section being one of surfaces of three-dimensional manifold A(x, y, s, t) which is expressed by x-coordinate, y-coordinate, parameter s, and parameter t and is defined on finite field Fq, x-coordinate and y-coordinate of section being expressed by functions of parameter s and parameter t, calculates hash value of message m, generates hash value polynomial by embedding hash value in 1-variable polynomial h(t) defined on finite field Fq, and generates digital signature Ds(Ux(t), Uy(t), t) which is curve on section, the x-coordinate and y-coordinate of curve being expressed by functions of parameter t, by substituting hash value polynomial in parameter s of section.