Abstract: Each of two or more terminals includes calling relationship transmission means which transmits calling relationship information regarding an application (or content data) to a management unit and download means which downloads an application. The management unit includes calling relationship statistics storage means which stores calling relationship statistical information generated based on the calling relationship information received from the terminals. An application server includes attribute generating means which generates attribute data, including information representing applications having high probabilities of being called up during the execution of an application as related applications, for each application managed by the application server based on the calling relationship statistical information. The download means further downloads an application based on the attribute data generated by the attribute generating means.

Abstract: Terminal certification means of a communication terminal manages a content and certification information on the content in association with each other. Upon access to a server associated with the execution of the content, request means sends the server a request including certification information associated with the content. In response to the request from the communication terminal, the server uses server certification means to certify the request. Access control means performs access control based on policy information stored in policy information storage means.

Abstract: A terminal includes: a call relationship transmission means for transmitting call relationship information, which indicates a call relationship regarding an application or content data executed in the terminal, to a management device; and a download means for downloading the application or content data on the basis of call relationship statistical information held in a call relationship statistic holding means. The management device includes the call relationship statistic holding means, which holds the call relationship statistical information indicating the statistic of the call relationship regarding the application or content data indicated by the call relationship information received from each terminal.

Abstract: Collation information (22) of data (21) is acquired via a high-secure network (3). The data (21) is acquired via a low-secure network (4). The acquired collation information (22) and data (21) are collated. If the collation result is “match”, it is determined that the low-secure network (4) is not disguised, and access to the low-secure network (4) is permitted. The use of the downloaded data (21) on the high-secure network (3) and low-secure network (4) is permitted.

Abstract: Terminal certification means of a communication terminal manages a content and certification information on the content in association with each other. Upon access to a server associated with the execution of the content, request means sends the server a request including certification information associated with the content. In response to the request from the communication terminal, the server uses server certification means to certify the request. Access control means performs access control based on policy information stored in policy information storage means.

Abstract: Each of two or more terminals includes calling relationship transmission means which transmits calling relationship information regarding an application (or content data) to a management unit and download means which downloads an application. The management unit includes calling relationship statistics storage means which stores calling relationship statistical information generated based on the calling relationship information received from the terminals. An application server includes attribute generating means which generates attribute data, including information representing applications having high probabilities of being called up during the execution of an application as related applications, for each application managed by the application server based on the calling relationship statistical information. The download means further downloads an application based on the attribute data generated by the attribute generating means.

Abstract: A terminal includes: a call relationship transmission means for transmitting call relationship information, which indicates a call relationship regarding an application or content data executed in the terminal, to a management device; and a download means for downloading the application or content data on the basis of call relationship statistical information held in a call relationship statistic holding means. The management device includes the call relationship statistic holding means, which holds the call relationship statistical information indicating the statistic of the call relationship regarding the application or content data indicated by the call relationship information received from each terminal.

Abstract: Collation information (22) of data (21) is acquired via a high-secure network (3). The data (21) is acquired via a low-secure network (4). The acquired collation information (22) and data (21) are collated. If the collation result is “match”, it is determined that the low-secure network (4) is not disguised, and access to the low-secure network (4) is permitted. The use of the downloaded data (21) on the high-secure network (3) and low-secure network (4) is permitted.

Abstract: A determination unit (101) determines, on the basis of the information of a first network (111) used to acquire a communication application and a communication state including a communication method used for acquisition, a network usable by the communication application using a criterion prepared in advance. For example, the determination unit (101) determines a second network (112) as a network usable by the communication application. A communication unit (102) executes communication by the communication application using the network determined by the determination unit (101). For example, the communication unit (102) executes communication by the communication application using the second network (112) determined as usable.

Abstract: Bearer attribute information (20) indicating at least one bearer usable by an application and the priority of the bearer is compared with the characteristic information (21) of a communication terminal, thereby generating a bearer list (23) including, of bearers of the bearer attribute information, bearers usable by the communication terminal and the priorities of the bearers. The bearer list is stored in a database (DB). A bearer to be used by the application is selected in accordance with the priority in the bearer list, and the communication process of the application is executed. This allows to implement an application execution environment that sufficiently reflects the application provider's intention. The bearer list can be changed by the user via a user interface (24). In this case, the user can change the bearer list only within the range stored in the database. This prevents any arbitrary setting by the user.

Abstract: Ti or a high-Ti alloy is melted in a container composed of high-purity CaO materials on its inner sides. The materials are composed of not less than 99% by weight of CaO, not more than 0.1% by weight of SiO.sub.2, not more than 0.02% by weight of Fe.sub.2 O.sub.3, and not more than 0.5% by weight in total of other metal oxides under a non-oxidizing atmosphere.CaO refractories for use in the melting of Ti or a high-Ti alloy contains not less than 99% by weight of CaO, not more than 0.1% by weight of SiO.sub.2, 0.02% by weight of Fe.sub.2 O.sub.3, and not more than 0.5% by weight of other metal oxides.

Abstract: A lanthanide-containing alloy is produced by retaining the melt of this alloy by the use of a container having the inner surface formed of a calcia-based refractory possessing a CaO content of not less than 90% by weight in a non-oxidizing atmosphere.