Abstract: A magnetic field generating device includes a triaxial Helmholtz coil 3, amounting table 4 on which a portable device 2 is mounted, a current supplying part 5 and a controlling part 6. The current supplying part 5 supplies current I to individual three monoaxial Helmholtz coils 30 which construct the triaxial Helmholtz coil 3. The controlling part 6 changes the current flowing through the individual monoaxial Helmholtz coils 30 in such a manner that a synthetic magnetic field of a magnetic field generated within the triaxial Helmholtz coil 3 by the current I and an external magnetic field which acts from the outside into the triaxial Helmholtz coil 3 acts on a triaxial magnetic sensor 20 within the portable device 2 mounted on the mounting table 4 from a plurality of predetermined directions.

Abstract: A magnetic field generating device includes a triaxial Helmholtz coil 3, amounting table 4 on which a portable device 2 is mounted, a current supplying part 5 and a controlling part 6. The current supplying part 5 supplies current I to individual three monoaxial Helmholtz coils 30 which construct the triaxial Helmholtz coil 3. The controlling part 6 changes the current flowing through the individual monoaxial Helmholtz coils 30 in such a manner that a synthetic magnetic field of a magnetic field generated within the triaxial Helmholtz coil 3 by the current I and an external magnetic field which acts from the outside into the triaxial Helmholtz coil 3 acts on a triaxial magnetic sensor 20 within the portable device 2 mounted on the mounting table 4 from a plurality of predetermined directions.

Abstract: An order placement and acceptance management system is presented. In an exemplary embodiment, an order acceptance management apparatus (“OAMA”) receives a predetermined quotation request transmitted by an order placement management apparatus. The OAMA generates a quotation result based on data on products and services which is segmented and stored in a database. The order placement management apparatus (“OPMA”) as well as a transaction management apparatus (“TMA”) store the quotation results transmitted by the OAMA in their own respective storage units, and the OPMA can choose amongst the received quotations to place an order. In an exemplary embodiment, other order placement management apparatuses can also use the quotation results and data on completed transactions which are stored in the transaction management apparatus as reference prices in order to estimate purchase prices for future transactions or evaluate quotations received from OAMAs.