Abstract: A high availability system includes a first computer on which a first virtual computer and a first hypervisor managing the first virtual computer operate, and a second computer on which a second virtual computer and a second hypervisor managing the second virtual computer operate. The first hypervisor includes an acquisition unit which acquires synchronization information associated with an event, wherein the event has occurred in the first virtual computer and accompanies an input to the first virtual computer, and a transmission unit which transmits the acquired synchronization information to the second hypervisor. The second hypervisor includes a reception unit which receives the synchronization information from the first hypervisor, and a control unit which performs control to match an input to the second virtual computer with an input to the first virtual computer in accordance with the received synchronization information.

Abstract: In a portable device connectable to a network system, an access right information acquisition unit acquires access right information of a computer resource assigned to a user temporarily registered to the network system from a computer which manages the computer resource in the network system. An access right information preservation unit preserves the access right information acquired by the access right information acquisition unit. A network access unit accesses the network system using the access right information preserved in the access right information preservation unit.

Abstract: In a portable device connectable to a network system, an access right information acquisition unit acquires access right information of a computer resource assigned to a user temporarily registered to the network system from a computer which manages the computer resource in the network system. An access right information preservation unit preserves the access right information acquired by the access right information acquisition unit. A network access unit accesses the network system using the access right information preserved in the access right information preservation unit.

Abstract: In an information processing apparatus, a program processing unit executes a program described as an object-oriented language executed by a platform-independent machine language. A monitor unit monitors a change of a network address of the information processing apparatus. A reference provision unit provides a new network address of the information processing apparatus for another information processing apparatus when said monitor unit detects the change of the network address of the information processing apparatus.

Abstract: In an information processing apparatus, a program processing unit executes a program described as an object-oriented language executed by a platform-independent machine language. A monitor unit monitors a change of a network address of the information processing apparatus. A reference provision unit provides a new network address of the information processing apparatus for another information processing apparatus when said monitor unit detects the change of the network address of the information processing apparatus.

Abstract: In a portable device connectable to a network system, an access right information acquisition unit acquires access right information of a computer resource assigned to a user temporarily registered to the network system from a computer which manages the computer resource in the network system. An access right information preservation unit preserves the access right information acquired by the access right information acquisition unit. A network access unit accesses the network system using the access right information preserved in the access right information preservation unit.

Abstract: In a portable device connectable to a network system, an access right information acquisition unit acquires access right information of a computer resource assigned to a user temporarily registered to the network system from a computer which manages the computer resource in the network system. An access right information preservation unit preserves the access right information acquired by the access right information acquisition unit. A network access unit accesses the network system using the access right information preserved in the access right information preservation unit.

Abstract: In a computer resource assignment apparatus, a registration request processing section assigns a computer resource to a user in response to a temporary registration request from the user. A computer resource management section manages the computer resource assigned to the user of the temporary registration request by unit of each user.

Abstract: A method, apparatus, and computer program product for performing bidirectional transformation between a first structured document and a second structured document is disclosed. A transformation rule having primitive rules each of which is applicable to respective one of elements specified in units of paths within the first structured document is prepared. A forward transformation is performed, which transforms the first structured document into the second structured document in accordance with the transformation rule. At that time, a transformation record is created. The record contains which primitive rules were applied and which paths were transformed in the forward transformation. The transformed second structured document may be edited by an application-side. After that, a backward transformation is performed, which transforms the second structured document into the first structured document with referral to the transformation record, the transformation rule, and the first structured document.

Abstract: According to an aspect of the present invention, in a virtual space unit area, a message is distributed among computers using a physical topology based on a physical network. This avoids delaying operations in a computer which are related to those in another computer on a virtual space and taking a roundabout route on the physical network for distribution. On the other hand, outside the virtual space unit area, a message is distributed among computers using a virtual topology based on a virtual space. Consequently, the computers forming the physical topology can be limited to those present in the virtual space unit area. It is thus possible to reduce the amount of communication required to measure physical network distances.

Abstract: A write control method of exclusively controlling write requests from a plurality of user terminals to an identical structured document is disclosed. The identical structured document includes a plurality of elements each containing document content. A monitor field is set in units of the elements within the identical structured document. Upon accepting one write request from one user terminal, it is determined if the one write request is directed to the document content under monitoring by referral to the monitor field. Then, the one write request is handled to reject overwriting of the document content despite the one write request if the document content has been rewritten by another write request from another user terminal in advance.

Abstract: The encoded contents of a piece of delivered information is accompanied by an applicable time data indicating a specific time period for authorizing a particular mode of utilization. When a request for utilizing the contents is issued in an information utilization apparatus, it determines if the current time agrees with the time authorizing the requested utilization by referring to the time data annexed to the encoded contents. If the request is acceptable at the current time, a set of processing steps is carried out for decoding the encoded contents and other necessary operations. Thus, an information access control method can be adapted to have flexibility in setting charges and access requirements for the contents of information that can change the value and the mode of utilization with time.

Abstract: A method, apparatus, and computer program product for performing bidirectional transformation between a first structured document and a second structured document is disclosed. A transformation rule having primitive rules each of which is applicable to respective one of elements specified in units of paths within the first structured document is prepared. A forward transformation is performed, which transforms the first structured document into the second structured document in accordance with the transformation rule. At that time, a transformation record is created. The record contains which primitive rules were applied and which paths were transformed in the forward transformation. The transformed second structured document may be edited by an application-side. After that, a backward transformation is performed, which transforms the second structured document into the first structured document with referral to the transformation record, the transformation rule, and the first structured document.

Abstract: A method, apparatus, and computer program product for performing bidirectional transformation between a first structured document and a second structured document is disclosed. A transformation rule having primitive rules each of which is applicable to respective one of elements specified in units of paths within the first structured document is prepared. A forward transformation is performed, which transforms the first structured document into the second structured document in accordance with the transformation rule. At that time, a transformation record is created. The record contains which primitive rules were applied and which paths were transformed in the forward transformation. The transformed second structured document may be edited by an application-side. After that, a backward transformation is performed, which transforms the second structured document into the first structured document with referral to the transformation record, the transformation rule, and the first structured document.

Abstract: A server borrowing apparatus, includes a storing unit that stores lender installation setting information which includes a setting item determined by a server lender for installation of a server which is lent out as resource, a receiving unit that receives a request to lend out the server as the resource and borrower installation setting information which includes a setting item determined by a server borrower for the installation of the server, from a borrowing control apparatus which is connected to a network to manage the server and to control server borrowing, a combining unit that combines the setting item in the borrower installation setting information and the setting item in the lender installation setting information to generate installation setting information for the installation of the server at the server borrowing, and an installing unit that performs the installation of the server based on the installation setting information.

Abstract: In an information processing apparatus, a program processing unit executes a program described as an object-oriented language executed by a platform-independent machine language. A monitor unit monitors a change of a network address of the information processing apparatus. A reference provision unit provides a new network address of the information processing apparatus for another information processing apparatus when said monitor unit detects the change of the network address of the information processing apparatus.

Abstract: In an information processing apparatus, a program processing unit executes a program described as an object-oriented language executed by a platform-independent machine language. A monitor unit monitors a change of a network address of the information processing apparatus.. A reference provision unit provides a new network address of the information processing apparatus for another information processing apparatus when said monitor unit detects the change of the network address of the information processing apparatus.

Abstract: A write control method of exclusively controlling write requests from a plurality of user terminals to an identical structured document is disclosed. The identical structured document includes a plurality of elements each containing document content. A monitor field is set in units of the elements within the identical structured document. Upon accepting one write request from one user terminal, it is determined if the one write request is directed to the document content under monitoring by referral to the monitor field. Then, the one write request is handled to reject overwriting of the document content despite the one write request if the document content has been rewritten by another write request from another user terminal in advance.

Abstract: In a computer resource assignment apparatus, a registration request processing section assignes a computer resource to a user in response to a temporary registration request from the user. A computer resource management section manages the computer resource assigned to the user of the temporary registration request by unit of each user.

Abstract: A method, apparatus, and computer program product for performing bidirectional transformation between a first structured document and a second structured document is disclosed. A transformation rule having primitive rules each of which is applicable to respective one of elements specified in units of paths within the first structured document is prepared. A forward transformation is performed, which transforms the first structured document into the second structured document in accordance with the transformation rule. At that time, a transformation record is created. The record contains which primitive rules were applied and which paths were transformed in the forward transformation. The transformed second structured document may be edited by an application-side. After that, a backward transformation is performed, which transforms the second structured document into the first structured document with referral to the transformation record, the transformation rule, and the first structured document.