Abstract: A commerce management device (1) is comprised of a transaction log; a sales quantity calculator (113) that calculates a quantity of sales of a digital product; a resell order count calculator (114) that calculates a resell order count based on a resell order form that is issued by a participant and recorded in a digital product resell order queue; and a price determiner (112) that determines the price in the next transaction by employing a monotonically increasing mathematical function that calculates a transaction price by taking, as an argument, a net quantity of sales obtained by subtracting the resell order count from the quantity of sales.

Abstract: A peptide nanofiber having conductivity is provided. A conductive peptide nanofiber which includes a nanofiber formed through a manner of self-assembly of a peptide that has a nanofiber-forming ability and consists of an amino acid sequence of Xaa-Phe-Ile-Val-Ile-Phe-Xaa (SEQ ID NO: 1, wherein N-terminal Xaa is an arbitrary amino acid residue Xaa1; C-terminal Xaa is an arbitrary amino acid residue Xaa2; and Xaa1 and Xaa2 are an amino acid having an acidic side chain, an amino acid having a basic side chain, or an amino acid having a side chain with polarity according as acidity and basicity) or a derivative of the peptide and a conductive substance added thereto, the aforementioned conductive substance being added to an amino group of the peptide or the derivative.

Abstract: A peptide nanofiber having conductivity is provided. A conductive peptide nanofiber which includes a nanofiber formed through a manner of self-assembly of a peptide that has a nanofiber-forming ability and consists of an amino acid sequence of Xaa-Phe-Ile-Val-Ile-Phe-Xaa (SEQ ID NO: 1, wherein N-terminal Xaa is an arbitrary amino acid residue Xaa1; C-terminal Xaa is an arbitrary amino acid residue Xaa2; and Xaa1 and Xaa2 are an amino acid having an acidic side chain, an amino acid having a basic side chain, or an amino acid having a side chain with polarity according as acidity and basicity) or a derivative of the peptide and a conductive substance added thereto, the aforementioned conductive substance being added to an amino group of the peptide or the derivative.

Abstract: A communication support system comprises an information terminal device (101) for inputting and outputting voices (or sentences) and a personal mixing section (111) for outputting voices (or sentences) input to a communication server (102) by synthesizing them according to the interest of an individual user. Thus, one of conversations flowing through the communication server that matches with a user's interest is directed to the user.

Abstract: A method and apparatus for predicting a protein tertiary structure or designing a protein sequence using potential profiles calculated by using multidimensional singleton potentials dependent only on a residue type of one of residues of a residue pair and on a multidimensional relative structural relationship (including direction and orientation) between residues of each residue pair. Existing dynamic programming is used in predicting a protein tertiary structure.