Patent application number | Description | Published |
20090236441 | Fuel injector having piezoelectric actuator with preload control element and method - A fuel injector includes a piezoelectric actuator subassembly having a casing and a piezoelectric element disposed within the casing. The piezoelectric element has an operating temperature range and includes a thermally contractive material having a negative thermal expansion coefficient over a second temperature range overlapping with the operating temperature range. A preload control element is coupled with the piezoelectric element and includes a thermally expansive material having a positive thermal expansion coefficient over the second temperature range. The preload control element maintains a constant preload on the piezoelectric element over a wide temperature range to inhibit temperature induced variability in operation, and can axially lengthen in opposition to axial shortening of the piezoelectric element, responsive to a temperature increase. | 09-24-2009 |
20100001094 | APPARATUS AND METHOD FOR COOLING A FUEL INJECTOR INCLUDING A PIEZOELECTRIC ELEMENT - A fuel injector including a nozzle portion and an electrically actuated valve assembly configured to control a flow of fuel to the nozzle portion. The electrically actuated valve assembly may include a piezoelectric element and a biasing member. The fuel injector also may include a housing with at least a portion of the electrically actuated valve assembly disposed in the housing. The housing may define a cavity between the piezoelectric element and the housing. A thermally conductive material may be disposed at least partially within the cavity and may be configured to transfer heat from the piezoelectric element to the housing. | 01-07-2010 |
20100077971 | Engine having fuel injector with actuator cooling system and method - An internal combustion engine, such as a direct injection compression ignition diesel engine, includes an engine housing having a plurality of cylinders and a plurality of fuel injectors associated one with each of the cylinders. The fuel injectors each include a first fuel inlet and a second fuel inlet, and an actuator subassembly which is configured to actuate a control valve assembly positioned within the fuel injector. The engine further includes a fuel system having a fuel supply circuit, and a cooling system for the actuator subassembly having a cooling circuit with a segment in common with a segment of the fuel system. The cooling system is configured to pass cooling fuel across a heat exchange interface of the actuator subassembly to exchange heat therewith. The actuator subassembly may include a piezoelectric actuator and a preloading spring, which are each fluidly sealed within a casing of the actuator subassembly. | 04-01-2010 |
Patent application number | Description | Published |
20110066490 | SYSTEM AND METHOD FOR RESOURCE MODELING AND SIMULATION IN TEST PLANNING - A method includes generating a test model based on at least one of test group dependencies and test group constraints and generating a resource base. The method includes generating a cost model and generating a resource allocation plan based on the test model, the resource base, and the cost model. | 03-17-2011 |
20110066890 | SYSTEM AND METHOD FOR ANALYZING ALTERNATIVES IN TEST PLANS - A method includes creating an initial test plan including initial estimates of effort and defect distributions, creating an alternative test plan including alternative estimates of effort and defect distributions, and displaying at least one metric of the initial test plan and the alternative test plan side by side for comparison by a user. | 03-17-2011 |
20110067005 | SYSTEM AND METHOD TO DETERMINE DEFECT RISKS IN SOFTWARE SOLUTIONS - A method is implemented in a computer infrastructure having computer executable code tangibly embodied on a computer readable storage medium having programming instructions. The programming instructions are operable to receive one or more risk factors, receive one or more contexts, identify one or more context relationships and associate the one or more contexts with the one or more risk factors. Additionally, the programming instructions are operable to map the one or more risk factors for an associated context to a software defect related risk consequence to determine a risk model and execute a risk-based testing based on the risk model to determine a defect related risk evaluation for a software development project. | 03-17-2011 |
20150248778 | GENERATING A TREE MAP - A method for generating a tree map for tree map visualization includes obtaining node information of a plurality of nodes to be processed, the plurality of nodes to be processed being sub-nodes sharing a same parent node and the node information comprising at least sizes of the nodes; determining from the plurality of nodes a plurality of candidate nodes whose sizes are less than a threshold size; determining at least one super node including the plurality of candidate nodes based on the node information of the determined plurality of candidate nodes, a screen size, and the threshold size, such that when displaying in a zooming-in mode the super node on the screen, all candidate nodes in the super node are displayed at display sizes not less than the threshold size; and determining data required for displaying the tree map based on the determined super node. | 09-03-2015 |
Patent application number | Description | Published |
20130117005 | COVERAGE ANALYSIS FOR MULTIPLE TEST METHODOLOGIES - Systems and methods for constructing a model to test the functionality of a target system are provided. When a first test methodology is used to test the target system, a model is proposed to test the target system based on a second test methodology. A subset of the target system's properties covered by the model is selected according to the second test methodology. It is determined whether the selected subset of the target system's properties, as covered by the second test methodology, is covered by the first test methodology. | 05-09-2013 |
20130339921 | SYSTEM AND METHOD TO DETERMINE DEFECT RISKS IN SOFTWARE SOLUTIONS - A method is implemented in a computer infrastructure having computer executable code tangibly embodied on a computer readable storage medium having programming instructions. The programming instructions are operable to receive one or more risk factors, receive one or more contexts, identify one or more context relationships and associate the one or more contexts with the one or more risk factors. Additionally, the programming instructions are operable to map the one or more risk factors for an associated context to a software defect related risk consequence to determine a risk model and execute a risk-based testing based on the risk model to determine a defect related risk evaluation for a software development project. | 12-19-2013 |
20140032256 | MULTI-PROJECT PORTFOLIO OPTIMIZATION - A computer hardware-implemented method, system, and/or computer program product creates an optimized project portfolio. Parameters, which defined constraints on a project portfolio, are established. The project portfolio is populated with a mixture of critical path projects and critical chain projects. The project portfolio is then optimized by: in response to determining that start and finish dates have been committed to project sponsors of in-progress projects within the project portfolio, locking the in-progress projects into place on a portfolio timeline; adjusting expectations for the in-progress projects based on performance to date in order to extend a finish date; combining all other projects, which are not yet committed, in priority order onto the portfolio timeline by mapping each generic timeline onto actual calendar dates; and sliding unanchored projects forward or backward on the portfolio timeline to fill holes and smooth bulges in the portfolio timeline. | 01-30-2014 |
20140059081 | Attribute Value Properties for Test Selection with Cartesian Product Models - A method for modeling a test space is provided. The method comprises defining a coverage model including one or more attributes, wherein respective values for the attributes are assigned, one or more definitions of value properties for said attributes with assigned values, and one or more requirements that limit combination of attribute values that are legal for the model, wherein at least one of said requirements is defined using at least one value property. | 02-27-2014 |
20140136277 | SYSTEM AND METHOD TO DETERMINE DEFECT RISKS IN SOFTWARE SOLUTIONS - A method is implemented in a computer infrastructure having computer executable code tangibly embodied on a computer readable storage medium having programming instructions. The programming instructions are operable to receive one or more risk factors, receive one or more contexts, identify one or more context relationships and associate the one or more contexts with the one or more risk factors. Additionally, the programming instructions are operable to map the one or more risk factors for an associated context to a software defect related risk consequence to determine a risk model and execute a risk-based testing based on the risk model to determine a defect related risk evaluation for a software development project. | 05-15-2014 |
20140317450 | PRETEST SETUP PLANNING - A computer-implemented method comprising: obtaining a description of a test suite which comprises a plurality of tests, wherein each test of the test suite is described by values of functional attributes, wherein at least a portion of the functional attributes are setup-related attributes, wherein a combination of values of the setup-relates attributes potentially indicate a setup activity to be performed prior to executing the test to set up a test environment for the test. Identifying, based on the description of the test suite, a setup activity that is associated with two or more tests, wherein the setup activity is configured to set up a component of the test environment, wherein the identifying is performed by a processor. Providing a first instruction to perform the setup activity prior to executing a first test of the two or more tests. And, providing a second instruction to reuse the component of the test environment when executing additional tests of the two or more tests, whereby avoiding performing duplicate setup activities. | 10-23-2014 |
20150067635 | IMPACT ANALYSIS OF CHANGE REQUESTS OF INFORMATION TECHNOLOGY SYSTEMS - A method for impact analysis of change requests of a computing system is provided. The method includes, identifying artifacts and tasks that are impacted by a change request on a target project based on a change request repository, an artifact dependency network and a task-artifact mapping repository. The method further includes, determining an impact analysis priority for each of the identified tasks based on associations among the change request and the identified artifacts and tasks, and a project status tracking repository. The method further includes analyzing an impact of the change request on each of the identified tasks according to the determined impact analysis priority. The method further includes obtaining requirements, requirement dependencies and requirement constraints of the project scope to identifying artifacts and tasks that are impacted by a change request on the target project of the project scope. | 03-05-2015 |
20150067636 | SYSTEM AND METHOD FOR RESOURCE MODELING AND SIMULATION IN TEST PLANNING - A method includes generating a test model based on at least one of test group dependencies and test group constraints and generating a resource base. the method includes generating a cost model and generating a resource allocation plan based on the test model, the resource base, and the cost model. | 03-05-2015 |
20150095875 | COMPUTER-ASSISTED RELEASE PLANNING - A compute-implemented method and apparatus for assisting release planning, including steps of: obtaining remaining requirements that are expected to be included in a current release plan; obtaining the release plan, which comprises a set of planned requirements that are already included in the release plan and a set of release constraints; determining that there is a conflict between the release constraints and the planned requirements; rendering, in response to this determination, a proposal to create a modified release plan that is a function of the remaining requirements and of the current release plan; and forecasting, as a function of the remaining requirements and of the modified release plan, whether the addition of another requirement to the release plan would create a conflict with the release constraints. | 04-02-2015 |
20150121381 | CHANGE-REQUEST ANALYSIS - A method and associated systems for analyzing a change request of a project that involves an IT system, where IT system contains IT artifacts that have predefined relationships. One or more processors obtain a change request; use information contained in the change request to select an applicable decomposition agent; use information in the selected decomposition agent to decompose the change request into a set of component sub-change requests; correlate at least one of the sub-change requests with one of the IT artifacts; and display the sub-change requests. In alternate implementations, selecting the applicable decomposition agent may require additional user input. | 04-30-2015 |