摘要:
Described are collection view objects, which provide a user interface view over a data collection, where each view may have its own sort order, filter and/or grouping criteria, as well as current item semantics. A user interface element is bound to a data collection, such as via markup language (e.g., XAML). At runtime, a collection view object is instantiated as an indirection between the data collection and the user interface element, whereby a collection of data items is viewed according to how each collection view object is currently configured with respect to sorting, filtering and/or grouping. Multiple collection views may be specified on the same data collection, whereby distinct simultaneous views of the data items may be presented in different user interface elements. The collection view object dynamically updates the displayed data as changes are made in the data collection. A current item may be selected within the collection view.
摘要:
Architecture for validating input. A control is associated with a data source via a Binding. The control is arranged to receive user input with which to update the data source. In addition, zero or more validation rules are associated with the Binding and executed to validate the input. If the user input is invalid or an exception occurs while converting the input or updating the data source, a validation error object may be created and attached to the control. To provide feedback to the user, a control defines additional user interface elements to adorn the control and display the created validation error information to the user.
摘要:
Embodiments of the present invention relate to methods, systems, and computer-readable media for editing an object displayed by a computer system. Editing comprises detecting an edit operation for an object displayed on a video display of a computer system. An edit operation request is then sent to an abstraction layer via an interface provided by the abstraction layer to initiate editing of the object by the abstraction layer. The abstraction layer receives the edit operation request and determines the type of container in which the object is displayed based on properties related to the object to be edited. The abstraction layer reads a set of properties related to the object and the container in which the object is displayed. The abstraction layer may then edit the object based the properties of the container and object by modifying one or more of the properties of the container and object.
摘要:
Described is a mechanism for providing scoped modular services (SMS) through an API. A common set of services is provided by the API that may be enabled or disabled by each component. The services are managed using a property system in the same manner as element properties are used, such as properties relating to text formatting. This helps to ensure fine control and a high degree of customization for a user interface. The use of the services is not limited to editing in the common sense of the word. The SMS is a mechanism for controlling access to implementation of services contained within a tree of components. Services may also be created by developers that are managed by a service manager along with the common services.
摘要:
A process for making a composite tube uniquely suited for use in ethylene pyrolysis furnaces wherein the tube comprises an outer shell made from a wrought or cast Fe—Ni—Cr heat resistant alloy and an inner core made from INCOLOY® alloy MA956 powder. The outer shell and powder core are heated and simultaneously extruded to form a composite tube. The process is carried out at temperature, and time at temperature, preferably less than 1200° C. so as to prevent recrystalization of the very fine grain structure in the alloy MA956. This un-recrystalized fine grain structure permits pilgering and/or cold drawing of the extruded composite tube to final size. The composite tube provided by the present invention is uniquely suited for use in the petrochemical and chemical process industries, so as to increase the efficiency and productivity of their respective processes. The thin core layer of alloy MA956 provides high resistance to carburization and coke formation heretofore caused by the hydrocarbon feedstock flowing through the composite tube, while the outer shell of Fe—Ni—Cr heat resistant alloy provides overall strength and rigidity to the tube. The use of the outer shell in the composite tube also solves the joining problem heretofore encountered in joining alloy MA956. A root pass or passes using an alloy MA956 filler metal followed by overlay welding passes using a filler metal compatible with the heat resistant alloy, such as INCONEL alloy 617 or FM 25/35, joins the outer shells of adjoining composite tubes and, thus, solves the welding problem.
摘要:
A system and process for capturing and rendering ink is described. An ink canvas object may contain none, one, or more objects or elements and may specify the z-order of the objects or elements. The ink canvas object may host a variety of objects or elements and, therefore, provide ink functionality to the objects or elements, even though they themselves may not have ink functionality.
摘要:
An acoustic temperature measurement system for pipeline fluids comprises a loudspeaker (16) with spaced microphone (18) in a sealed pipe (10) with end cap (11). A computer arrangement (22) provides a tone burst signal which drives the speaker via power amplifier (21) and the outgoing and reflected signal is detected by the microphone (18) and following amplification in amplifier (20) passes to the computer (22) for processing. The signals are processed to determine phase relationships indicative of temperature and can be used in correcting leakage measurement readings.
摘要:
There is provided herein a method of seismic acquisition that utilizes an arrangement of marine sources where each source is positioned at a water depth shallow enough for the surface ghost notch to fall at a frequency greater than or equal to the maximum radiated frequency of interest. If the marine seismic source has a ratio of signal bandwidth to maximum frequency that is less than one half, then it is possible to deploy it at a greater depth at which ghost notches fall below and above its frequency band but not in it. Further, by placing two or more sources at different depths for the same frequency, any undesired nulls in the radiation pattern caused by the deeper tow can be filled in.
摘要:
A marine seismic source comprises a housing having a central axis, an open end, and a closed end opposite the open end. In addition, the source comprises a piston coaxially disposed within the housing. In addition, the source comprises a flywheel disposed within the housing and axially positioned between the closed end and the piston. The flywheel is configured to rotate about a rotational axis. Further, the source comprises a connecting rod moveably coupling the piston to the flywheel. The connecting rod has a first end pivotally coupled to the piston and a second end pivotally coupled to the flywheel. The second end of the connecting rod has a first position at a first distance measured radially from the rotational axis, and a second position at a second distance measured radially from the rotational axis. The first distance is less than the second distance.
摘要:
An API and method for processing a user interface event is provided. The user interface event may take place in any environment of a software application, and may result from any type of user or software action. An embodiment also provides a framework for customizing the processing of a user interface event without the need to maintain accountability of computer states. In the method, an application process user interface event is processed using an operating system process. A user interface event is received by the application process by way of a user interface. A software component adapted to process the user interface event is pushed onto a memory stack by the operating system process. The operating system process processes the user interface event using the software component, and pops the software component from the memory stack.