Abstract: A borehole cement slurry additive that is capable of suppressing the generation of free water from cement slurries in any environment, whether cold regions, mild regions, or hot regions; and a method for storing the same. The borehole cement slurry additive contains: an aqueous dispersion of silica having an average particle size of 3-200 nm as determined via dynamic light scattering; and a compound having an alcoholic hydroxyl group as a dispersion stabilizer, the compound being included in an amount of 1-30 mol per 1,000 g dispersion medium in the aqueous silica dispersion.

Abstract: An abnormal state of an allocated task in a processing node is detected correctly without using any resource of the processing node. A power usage statistics storing unit 240 stores a statistical value representing a power usage of the processing node in a state of executing the task. A power usage comparing unit 250 compares a newly collected power usage of the processing node in a state of executing the task with the statistical value representing a power usage of the processing node, which is stored in the power usage statistics storing unit 250, to detect an abnormal state of the task in the processing node.

Abstract: The present invention includes application execution units (1a) and (1b) that perform distributed execution of one application while referencing a processing target file F in a distributed shared storage DS; a processing step monitoring unit (3) that monitors the processing step of the application that is being executed by the application execution units; a resource isolation determination unit (4) that determines whether the processing step being monitored by the processing step monitoring unit is a resource isolation step that requires resource isolation; and resource provision units (2)a and (2b) that generate an isolated file CF if the resource isolation determination unit determined that the processing step is the resource isolation step.

Abstract: A management node includes a distributed task management unit that divides a task including a plurality of processing targets and allocates the task to a plurality of execution nodes, and an execution status information memory update unit that updates execution status information of the task in accordance with execution status update requests from the execution nodes. Based on a first period of time required for processing the processing targets of a unit amount by the execution node and a second period of time required for processing the execution status update request by the management node, the distributed task management unit determines the amount of the task allocated to each of the execution nodes such that a difference in the completion time of the task allocated to any two execution nodes, among the execution nodes, becomes greater than the second period of time.

Abstract: An abnormal state of an allocated task in a processing node is detected correctly without using any resource of the processing node. A power usage statistics storing unit 240 stores a statistical value representing a power usage of the processing node in a state of executing the task. A power usage comparing unit 250 compares a newly collected power usage of the processing node in a state of executing the task with the statistical value representing a power usage of the processing node, which is stored in the power usage statistics storing unit 250, to detect an abnormal state of the task in the processing node.

Abstract: A management node includes a distributed task management unit that divides a task including a plurality of processing targets and allocates the task to a plurality of execution nodes, and an execution status information memory update unit that updates execution status information of the task in accordance with execution status update requests from the execution nodes. Based on a first period of time required for processing the processing targets of a unit amount by the execution node and a second period of time required for processing the execution status update request by the management node, the distributed task management unit determines the amount of the task allocated to each of the execution nodes such that a difference in the completion time of the task allocated to any two execution nodes, among the execution nodes, becomes greater than the second period of time.

Abstract: The present invention includes application execution units (1a) and (1b) that perform distributed execution of one application while referencing a processing target file F in a distributed shared storage DS; a processing step monitoring unit (3) that monitors the processing step of the application that is being executed by the application execution units; a resource isolation determination unit (4) that determines whether the processing step being monitored by the processing step monitoring unit is a resource isolation step that requires resource isolation; and resource provision units (2)a and (2b) that generate an isolated file CF if the resource isolation determination unit determined that the processing step is the resource isolation step.

Abstract: An RF tag includes a sensor for detecting a change in an environment near the RF tag, a storage section for storing identifier information uniquely assigned to each RF tag to identify the RF tag, and a controller for controlling the sensor and the storage section. A reader-writer includes a sensor value requesting section for requesting, with respect to the identifier information, a sensor value detected by the sensor. When the environmental information changes, the reader-writer identifies an object according to the sensor value sent from the RF tag including the identifier information as a response to the reader-writer. It is therefore possible, using an information management system, an information management method, a program, and a recording medium, to recognize an object including a particular tag.

Abstract: An RF tag includes a sensor for detecting a change in an environment near the RF tag, a storage section for storing identifier information uniquely assigned to each RF tag to identify the RF tag, and a controller for controlling the sensor and the storage section. A reader-writer includes a sensor value requesting section for requesting, with respect to the identifier information, a sensor value detected by the sensor. When the environmental information changes, the reader-writer identifies an object according to the sensor value sent from the RF tag including the identifier information as a response to the reader-writer. It is therefore possible, using an information management system, an information management method, a program, and a recording medium, to recognize an object including a particular tag.