Abstract: A heat exchanger includes a collecting pipe, a number of heat exchange tubes and a distributor. The collecting pipe has a first cavity and a first inner peripheral wall. The heat exchange tube has a second cavity. The distributor is accommodated in the first cavity. The distributor has a main cavity and a flow channel. The distributor includes a second inner peripheral wall forming the main cavity and a first outer peripheral wall. An axis of the first outer circle is not coaxial with an axis of the second outer circle, so that the flow channel of the distributor is relatively tortuous. It is beneficial to improve the distribution effect of a fluid. Besides, since the flow channel is formed inside the distributor, it is also beneficial to reduce the manufacturing difficulty of the distributor. A method for making the heat exchanger is also disclosed.

Abstract: A software-defined control (SDC)-enabled microgrid system includes a physical plane having multiple distributed energy resources (DERs), the DERs being operatively coupled together via a bus, and a control plane. The control plane includes at least one virtual controller running on a hardware server in the control plane, a system analysis module in communication with the physical plane, and an SDC manager coupled with the virtual controller and the system analysis module. The virtual controller includes multiple software-defined functional modules configured to control prescribed parameters of the microgrid. The system analysis module is configured to generate system analytics information as a function of operational information associated with one or more DERs in the physical plane. The SDC manager is configured to generate one or more virtual controllers for controlling an operation of at least a subset of the DERs in the physical plane as a function of the system analytics information.

Abstract: The present disclosure discloses a heat exchanger including a group of collecting pipes and a number of heat exchange assemblies. Each heat exchange assembly includes a fin plate and at least one heat exchange tube. The heat exchange assembly includes a main heat exchange area. The heat exchange tube is connected with the fin plate. The heat exchange tube at least partially protrudes from at least one side of the fin plate. In addition, in the main heat exchange area corresponding to two adjacent heat exchange assemblies, at least two adjacent heat exchange tubes are staggered along an array direction of the heat exchange assemblies. The two heat exchange tubes respectively belong to the two adjacent heat exchange assemblies. The present disclosure is beneficial to improve the performance of the heat exchanger.

Abstract: A construction method for a shallow-buried multi-arch tunnel under water-rich geological conditions includes the following steps: cleaning a grouting ground surface; marking a grouting reinforcement scope; performing survey setting-out; drawing a cross-section diagram to scale; calculating out coordinates and angles of anchor points that need to be set; marking drilling positions; nailing small wooden piles at the drilling positions for identifying; determining a setting depth of the anchor rods according to ground elevation; drilling holes, cleaning bottom of hole, grouting, performing construction preparation, performing long pipe shed construction at the entrance after an earth-rock of a tunnel entrance and an open cut tunnel is excavated to flush with a springing line of the tunnel. A down-the-hole drill is used for drilling in construction. Long pipe shed grouting is designed based on solidifying a soil mass in limited scope around a consolidation pipe shed.

Abstract: High-speed hyperspectral (HSHS) video reconstruction is implemented in an imaging system. A hyperspectral snapshot is determined. A panchromatic video is determined corresponding to a frame time of the hyperspectral snapshot, the panchromatic video including a plurality of panchromatic frames. An HSHS video is generated by building a patch dictionary based at least in part on the panchromatic video and generating at least one frame of the HSHS video based at least in part on the patch dictionary, the panchromatic video, and the hyperspectral snapshot. A computing device can include a dictionary component configured to determine the patch dictionary and a reconstruction component configured to generate at least one HSHS frame based at least in part on the patch dictionary, the panchromatic video, and the hyperspectral snapshot.

Abstract: High-speed hyperspectral (HSHS) video reconstruction is implemented in an imaging system. A hyperspectral snapshot is determined. A panchromatic video is determined corresponding to a frame time of the hyperspectral snapshot, the panchromatic video including a plurality of panchromatic frames. An HSHS video is generated by building a patch dictionary based at least in part on the panchromatic video and generating at least one frame of the HSHS video based at least in part on the patch dictionary, the panchromatic video, and the hyperspectral snapshot. A computing device can include a dictionary component configured to determine the patch dictionary and a reconstruction component configured to generate at least one HSHS frame based at least in part on the patch dictionary, the panchromatic video, and the hyperspectral snapshot.

Abstract: A compressive sensing-based multispectral video imager comprises a beamsplitter, a first light channel, a second light channel, and an image reconstruction processor; the beamsplitter is configured to divide the beam of an underlying image into a first light beam and a second light beam; the first light beam enters the first light channel, processed and sampled in the first light channel, to obtain a first mixing spectral image which is transferred to the image reconstruction processor; the second light beam enters the second light channel, processed and sampled in the second light channel, to obtain a second mixing spectral image which is transferred to the image reconstruction processor; the image reconstruction processor is configured to reconstruct the underlying spectral image based on the first mixing spectral image and the second mixing spectral image by using non-linear optimization method.

Abstract: A compressive sensing-based multispectral video imager comprises a beamsplitter, a first light channel, a second light channel, and an image reconstruction processor; the beamsplitter is configured to divide the beam of an underlying image into a first light beam and a second light beam; the first light beam enters the first light channel, processed and sampled in the first light channel, to obtain a first mixing spectral image which is transferred to the image reconstruction processor; the second light beam enters the second light channel, processed and sampled in the second light channel, to obtain a second mixing spectral image which is transferred to the image reconstruction processor; the image reconstruction processor is configured to reconstruct the underlying spectral image based on the first mixing spectral image and the second mixing spectral image by using non-linear optimization method.

Abstract: A system and method for determining the location of human faces within a color graphics image is disclosed. The proposed method consists of several steps to distinguish face candidates from a complex background. The method determines areas with both low color gradient values and high relative intensity. These areas are then further selected on the basis of hue saturation. A final series of steps determines which of these candidate areas represent human faces within the original image.

Abstract: A method of adjusting image descriptors when using steerable pyramid to extract features for content-based search is disclosed in this invention. Using steerable pyramid, the original image is filtered to produce Gaussian images and Laplacian images. The image descriptors are formed by filtering the Laplacian images. The filtering of the Laplacian images provides orientation data and energy data. From the orientation data, a first set of global information and local information is generated. From the energy data, a second set of global information and local information is generated. The descriptors are extracted from the respective sets of global information and local information associated with the orientation data and the energy data. The descriptors associated with the orientation data and the descriptors associated with the energy data are combined to form an image descriptor. The Laplacian image may be adjusted prior to the application of the filter.

Abstract: A method of manipulating illumination effects associated with an image. Initially, image data is filtered to provide orientation data and energy-data for a base image and an illuminated base image, the illuminated base image being a illuminated variation of the base image. Next, an illumination function is generated based upon illumination difference between the filtered base image and the filtered illuminated base image, the energy data of the filtered illuminated base image being related to the energy data of the filtered base image by the illumination function. Then the energy data of the filtered base image is normalized using the primary energy data of the filtered base image, and the energy data of the filtered illuminated base image is normalized using the primary energy data of the filtered illuminated base image.

Abstract: A method of determining a correlation between images, wherein each image is represented by an image descriptor. Each image descriptor comprises a peak descriptor, a set of statistic descriptors, and a set of co-occurence descriptors. Initially, a category associated with each image descriptor is determined. Provided the image descriptors belong to a common category, a difference value between select corresponding components of respective image descriptors is determined in accordance with an associated correlation protocol, the difference value representing the correlation between the images represented by respective image descriptors.

Abstract: A method of adjusting image descriptors when using steerable pyramid to extract features for content-based search is disclosed in this invention. Using steerable pyramid, the original image is filtered to produce Gaussian images and Laplacian images. The image descriptors are formed by filtering the Laplacian images. The filtering of the Laplacian images provides orientation data and energy data. From the orientation data, a first set of global information and local information is generated. From the energy data, a second set of global information and local information is generated. The descriptors are extracted from the respective sets of global information and local information associated with the orientation data and the energy data. The descriptors associated with the orientation data and the descriptors associated with the energy data are combined to form an image descriptor. The Laplacian image may be adjusted prior to the application of the filter.

Abstract: A method of determining a correlation between images, wherein each image is represented by an image descriptor. Each image descriptor comprises a peak descriptor, a set of statistic descriptors, and a set of co-occurence descriptors. Initially, a category associated with each image descriptor is determined. Provided the image descriptors belong to a common category, a difference value between select corresponding components of respective image descriptors is determined in accordance with an associated correlation protocol, the difference value representing the correlation between the images represented by respective image descriptors.

Abstract: A method of determining a correlation between images, wherein each image is represented by an image descriptor. Each image descriptor comprises a peak descriptor, a set of statistic descriptors, and a set of co-occurence descriptors. Initially, a category associated with each image descriptor is determined. Provided the image descriptors belong to a common category, a difference value between select corresponding components of respective image descriptors is determined in accordance with an associated correlation protocol, the difference value representing the correlation between the images represented by respective image descriptors.

Abstract: A method of determining peaks in a discrete function. The method comprising the steps of: applying a closing function to the discrete function to generate a closed discrete function; defining peaks within the closed discrete function; sorting the defined peaks according to function value; and applying a threshold value to each sorted defined peak in individual succession, wherein sorted defined peaks having a peak height value above the threshold value are retained within the closed discrete function.