Abstract: This disclosure presents a system and a method for providing a personalized book in which an interested matter is analyzed based on reading history, and a personalized book is generated which includes personalized contents and illustrations based on the interested matter. The presented system for providing a personalized book includes a reading history database which stores a reading history associating a user identifier and a book identifier with each other, a book information database which stores book information including a book identifier, text data, and image data, and a service server configured to deduce an interested matter of a user based on the reading history of the user stored in the reading history database in response to a personalized book generation request from a user terminal, and to generate a personalized book based on the interested matter and the book information stored in the book information database.

Abstract: This disclosure presents a system and a method for providing a personalized book in which an interested matter is analyzed based on reading history, and a personalized book is generated which includes personalized contents and illustrations based on the interested matter. The presented system for providing a personalized book includes a reading history database which stores a reading history associating a user identifier and a book identifier with each other, a book information database which stores book information including a book identifier, text data, and image data, and a service server configured to deduce an interested matter of a user based on the reading history of the user stored in the reading history database in response to a personalized book generation request from a user terminal, and to generate a personalized book based on the interested matter and the book information stored in the book information database.

Abstract: A quadrifilar helical antenna comprising two pairs of filars having unequal lengths and phase quadrature signals propagating thereon. A conductive H-shaped impedance matching element matches a source impedance to an antenna impedance. The impedance matching element having a feed terminal at the center thereof from which current is supplied to the two filars of each filar pair disposed about an edge of the impedance matching element and symmetric with respect to a center of the impedance matching element. The impedance matching element further comprises a reactive element for matching the antenna and source impedances.