Abstract: A bicycle comprises a front wheel; a rear wheel; a frame comprising a main frame portion and an articulating frame portion, the articulating frame portion comprising: a lower arm pivotally supported at a first axis by the main frame portion; an upper frame link pivotally supported at a second axis by the main frame portion; an upper arm pivotally coupled to the upper frame link at a third axis; an upper shock link pivotally coupled to the upper frame link and the upper arm at the third axis; and a lower shock link pivotally coupled to the main frame portion and the lower arm at the first axis; and a shock absorber having a first end pivotally supported at a fourth axis by the main frame portion, and a second end pivotally supported at a fifth axis by the upper shock link and the lower shock link.

Abstract: A device and method for estimating a resistance of a wheel of a bicycle is disclosed. The device includes a mounting bracket, a disk, and a resistance adjustment knob. The mounting bracket is coupled to the bicycle. The disk is configured to indicate the resistance. The disk is located within the mounting bracket. The resistance adjustment knob is connected to the disk via a connector. Upon rotation of the knob, the connector rotates the disk for estimating the resistance of the wheel of the bicycle. The determined estimated resistance is visible on the disk.

Abstract: Provided are mechanisms that allow automatic media content layering. The systems and methods obtain a media content list that includes a plurality of different types of media content segment entries. Media content tracks are determined from the plurality of media content segment entries and are based on the type of those entries. Media content track features are determined from the media content segment entries where those features are used to adjust the media content tracks, layering of multiple media content tracks, adjusting media content segments that make up the media content tracks or other features. A media content layered object is then generated based on the media content track features and the media content tracks. An action, such as storage, may be performed on the generated media content layered object.

Abstract: Provided is a method including providing a first audio content object that includes a plurality of audio content segments to a set of user computing devices. Each audio content segment of the plurality of audio content segments is associated with a first version. The method also includes obtaining a second version of a first audio content segment and updating the first version of the first audio content segment to the second version to generate a second audio content object that includes the second version of the first audio content segment and at least a first version of a second audio content segment. The method also includes providing the second audio content object to at least a first portion of the set of user computing devices and indicating a version history of the first audio content segment to at least the first portion of the set of user computing devices.

Abstract: An adjustable head angle bicycle assembly includes a steerer tube; a head tube that includes a first annular surface protruding radially inward from an inner wall at the upper end, and a second annular surface protruding radially inward from the inner wall at the lower end; an upper cup that includes a third annular surface engaged with the first annular surface of the head tube; and a lower cup that includes a fourth annular surface engaged with the second annular surface of the head tube.

Abstract: A method is provided for controlling a heating, ventilation, and air conditioning (HVAC) system. The method includes measuring a temperature and controlling a compressor of the HVAC system. The temperature is measured by a temperature sensor located between a metering device of the HVAC system and an evaporator coil of the HVAC system. The temperature is representative of a refrigerant temperature. The refrigerant temperature is a temperature of a refrigerant fluid flowing from the metering device to the evaporator coil. The compressor is controlled by control circuitry that is configured to perform the controlling in a dehumidify mode based, at least in part, on a value of a humidity parameter of air of an airflow through an evaporator coil and a reheat coil, where the value is determined using the temperature.

Abstract: Examples of the present disclosure relate to climate control systems and air handler units with improved leak detection, along with method for installing these systems. In some examples, the climate control system comprises a heat exchanger configured to exchange thermal energy between a conditioned airflow and a refrigerant fluid; a drain pan arranged to collect condensate produced at the heat exchanger, the drain pan including one or more drains configured to route condensate out of the drain pan; a refrigerant leak sensor coupled to the drain pan and positioned above the one or more drains and configured to detect a refrigerant leak; and control circuitry operably coupled to the refrigerant leak sensor, the control circuitry configured to: receive a signal from the refrigerant leak sensor indicative of refrigerant located outside the closed circuit associated with the heat exchanger, and determine a refrigerant leak has occurred based on the signal.

Abstract: A device and method for estimating a resistance of a wheel of a bicycle is disclosed. The device includes a mounting bracket, a disk, and a resistance adjustment knob. The mounting bracket is coupled to the bicycle. The disk is configured to indicate the resistance. The disk is located within the mounting bracket. The resistance adjustment knob is connected to the disk via a connector. Upon rotation of the knob, the connector rotates the disk for estimating the resistance of the wheel of the bicycle. The determined estimated resistance is visible on the disk.

Abstract: A multi-slab microchannel heat exchanger is disclosed. The heat exchanger includes a first slab having a first inlet header and a first outlet header, a second slab including a second inlet header and a second outlet header, a first inlet connector fluidly connected to the first inlet header, a first outlet connector fluidly connected to the first outlet header, a second inlet connector fluidly connected to the second inlet header, and a second outlet connector fluidly connected to the second outlet header. The first slab and the second slab are arranged successively in a direction along a length of the heat exchanger. The first inlet connector, the first outlet connector, the second inlet connector, and the second outlet connector are disposed at a same end of the heat exchanger.

Abstract: A multi-slab microchannel heat exchanger is disclosed. The heat exchanger includes a first slab having a first inlet header and a first outlet header, a second slab including a second inlet header and a second outlet header, a first inlet connector fluidly connected to the first inlet header, a first outlet connector fluidly connected to the first outlet header, a second inlet connector fluidly connected to the second inlet header, and a second outlet connector fluidly connected to the second outlet header. The first slab and the second slab are arranged successively in a direction along a length of the heat exchanger. The first inlet connector, the first outlet connector, the second inlet connector, and the second outlet connector are disposed at a same end of the heat exchanger.

Abstract: To address the need for scaffold-based oxygen concentration monitoring, a single-component, self-referenced oxygen sensor was made into nanofibers. Electrospinning process parameters were tuned to produce a biomaterial scaffold with specific morphological features. The ratio of an oxygen sensitive phosphorescence signal to an oxygen insensitive fluorescence signal was calculated at each image pixel to determine an oxygenation value. A single component boron dye-polymer conjugate was chosen for additional investigation due to improved resistance to degradation in aqueous media compared to a dye polymer blend. Standardization curves show that in fully supplemented media, the fibers are responsive to dissolved oxygen concentrations less than 15 parts per million. Spatial and temporal ratiometric gradients were observed in vitro radiating outward from the center of a dense adherent cell grouping. Sensor activation in ischemia and cell transplant models in vivo show oxygenation decreases on the scale of minutes.

Abstract: To address the need for scaffold-based oxygen concentration monitoring, a single-component, self-referenced oxygen sensor was made into nanofibers. Electrospinning process parameters were tuned to produce a biomaterial scaffold with specific morphological features. The ratio of an oxygen sensitive phosphorescence signal to an oxygen insensitive fluorescence signal was calculated at each image pixel to determine an oxygenation value. A single component boron dye-polymer conjugate was chosen for additional investigation due to improved resistance to degradation in aqueous media compared to a dye polymer blend. Standardization curves show that in fully supplemented media, the fibers are responsive to dissolved oxygen concentrations less than 15 parts per million. Spatial and temporal ratiometric gradients were observed in vitro radiating outward from the center of a dense adherent cell grouping. Sensor activation in ischemia and cell transplant models in vivo show oxygenation decreases on the scale of minutes.

Abstract: A system for computer-based testing includes a test driver that delivers the test to an examinee using a display device and controls progression of the test, a template module that stores presentation format information comprising the presentation format of the test, the presentation format information being accessible to the test driver, and a data module that stores data content information comprising the data content of the test, the data content information being accessible to the test driver, the presentation format information combining with the data content information to create the presentation format and the data content of the test.

Abstract: A system for computer-based testing for producing a test and delivering the test to an examinee includes a storage device that has a first storage location, which stores a first segment of a test definition language, and a second storage location, which stores a second segment of the test definition language, a validation expansion module that validates the first segment and the second segment of the test definition language, a test packager that amalgamates the first storage location and the second storage location and transmits the amalgamated segment to the validation expansion module such that the validation expansion module can determine whether the amalgamated segment forms a complete and valid set, and a test driver that has an executable code that controls functionality that enables the test driver to deliver the test to an examinee.

Abstract: A system for computer-based testing includes a test driver that delivers the test to an examinee using a display device and controls progression of the test, a template module that stores presentation format information comprising the presentation format of the test, the presentation format information being accessible to the test driver, and a data module that stores data content information comprising the data content of the test, the data content information being accessible to the test driver, the presentation format information combining with the data content information to create the presentation format and the data content of the test.

Abstract: A memory stores a plurality of first data structures, which includes element specific data objects indicating a classification of at least one of the plurality of segments of the test definition language, and second data structures, which include attribute specific data objects indicating at least one attribute of the segments of the test definition language implemented by a computer. A method for computer-based testing includes authoring a test specification and content of the at least one test using a test definition language, compiling the test specification and content of the at least one test to create a compiled test specification and content, which includes validating the test specification and content, storing the compiled test specification and content to a resource file, and retrieving the compiled test specification and content from the resource file during delivery of the test.

Abstract: A memory stores a plurality of first data structures, which includes element specific data objects indicating a classification of at least one of the plurality of segments of the test definition language, and second data structures, which include attribute specific data objects indicating at least one attribute of the segments of the test definition language implemented by a computer. A method for computer-based testing includes authoring a test specification and content of the at least one test using a test definition language, compiling the test specification and content of the at least one test to create a compiled test specification and content, which includes validating the test specification and content, storing the compiled test specification and content to a resource file, and retrieving the compiled test specification and content from the resource file during delivery of the test.

Abstract: A memory stores a plurality of first data structures, which includes element specific data objects indicating a classification of at least one of the plurality of segments of the test definition language, and second data structures, which include attribute specific data objects indicating at least one attribute of the segments of the test definition language implemented by a computer. A method for computer-based testing includes authoring a test specification and content of the at least one test using a test definition language, compiling the test specification and content of the at least one test to create a compiled test specification and content, which includes validating the test specification and content, storing the compiled test specification and content to a resource file, and retrieving the compiled test specification and content from the resource file during delivery of the test.

Abstract: A memory stores a plurality of first data structures, which includes element specific data objects indicating a classification of at least one of the plurality of segments of the test definition language, and second data structures, which include attribute specific data objects indicating at least one attribute of the segments of the test definition language implemented by a computer. A method for computer-based testing includes authoring a test specification and content of the at least one test using a test definition language, compiling the test specification and content of the at least one test to create a compiled test specification and content, which includes validating the test specification and content, storing the compiled test specification and content to a resource file, and retrieving the compiled test specification and content from the resource file during delivery of the test.

Abstract: A system for computer-based testing for producing a test and delivering the test to an examinee includes a test driver that has an executable code that controls the test driver, a storage device that has a plurality of storage locations, which store the test definition language as a plurality of segments, and a validation expansion module that validates at least one of the plurality of segments of the test definition language and writes the at least one of the plurality of segments directly to at least one of the plurality of storage locations in the storage device. A method instantiating a validation expansion module during a test production cycle and loading at least one of the plurality of segments of the test definition language into the validation expansion module from a source file.