The present invention discloses an ecological seawall water close side embankment slope drainage structure and a construction method thereof. The ecological seawall water close side embankment slope drainage structure includes a seawall, and further includes a wave dissipation ridge and water collecting wells, wherein the wave dissipation ridge is disposed at an upper side of the seawall, a drainage blind ditch is formed in an upper surface of the seawall, and the drainage blind ditch is matched with the wave dissipation ridge; the water collecting wells are distributed at a lower side of the drainage blind ditch at equal intervals, and lower end portions of the water collecting wells communicate with drainage concealed pipes; and pipe seats are disposed at a lower end portion of an inclined plane of the seawall, lower end portions of the drainage concealed pipes are fixedly connected onto the pipe seats, and flap valves are rotationally connected to lower end surfaces of the drainage concealed pipes. The present invention not only can reduce the erosion degree of sea waves to the seawall, but also can collect seawater going over the wave dissipation ridge and discharge the collected seawater into the sea again.

An early warning method and system for a regional public security management in a smart city based on the IoT are provided. The early warning method includes: sending, based on a sensing network sub-platform, a monitoring image of a target region to the management sub-platform; processing, based on a management sub-platform, the monitoring image to determine a risk index of the at least one target region; generating early warning information in response to the risk index of the target region greater than a first threshold, and sending the early warning information to the user platform through a general database of the management platform and the service platform; and obtaining a management instruction based on the user platform, and controlling, according to the management instruction, an unmanned aerial vehicle to go to the target region for monitoring.

A method for employment management and Internet of Things system are provided. The system comprises a user platform, a service platform, a management platform; the method being executed by the management platform, and the method comprising: obtaining company-related information; determining a target industry and a target company based on the company-related information and a query condition; predicting a turnover rate and a hiring rate of the target company based on company-related information of the target company; returning the turnover rate and the hiring rate of the target company to the user platform through the service platform; and generating first warning information based on the turnover rate that meets a first preset requirement, and/or generating second warning information based on the hiring rate that meets a second preset requirement, and returning the first warning information and/or the second warning information to the user platform based on the service platform.

A decorative material wherein, in a cross section in a direction orthogonal to a direction where a groove extends, the groove has a first slope part extending from one end of the groove to the deepest part of the groove, and a second slope part extending from the other end of the groove to the deepest part of the groove, wherein when an angle formed by a line segment connecting the one and other ends and a line segment connecting the one end and the deepest part is defined as θ.sub.1, and an angle formed by a line segment connecting the one and other ends and a line segment connecting the other end and the deepest part is defined as θ.sub.2, θ.sub.1 is more than θ.sub.2.

Various embodiments for a pad that may be combined with other similar pads to form a padding layer of an athletic field, or other surface, are disclosed. The pad includes a top surface and a bottom surface. Bottom-side projections are positioned on the bottom surface of the pad. Water channels are positioned on the bottom surface of the pad defined as a recessed area between individual ones of the bottom-side projections. A drainage hole is positioned in at least one of the bottom-side projections such that the drainage hole does not connect with any of the water channels on the bottom surface.

Provided is an angle bar for shelf assembly, the angle bar including a vertical frame in which a plurality of fastening grooves is formed and a horizontal frame on which a fastening protrusion is formed, wherein the plurality of fastening grooves, each including upper and lower grooves, are formed, the lower groove has a narrower width than the upper groove, and is connected to the upper groove with an inclination portion in between, wherein the fastening protrusion includes a convex portion having an inclination surface and first and second wing portions that are formed on lateral surfaces, respectively, of the convex portion, and wherein a distance between respective end portions of the first and second wing portions is smaller than a width of the upper groove and is larger than a width of the lower groove, and the convex portion has a wider width than the lower groove.

An integrated building photovoltaic apparatus for closing an opening on a building facade and generating electricity from a solar radiation which pass through the opening, includes at least two panes that are at least partially transparent and joined to each other by an interposed spacer to form an internal chamber therebetween; a blind arranged inside the internal chamber and having movable photovoltaic slats to vary the amount of the solar radiation passing through the opening; and connection elements, configured to pull or push the photovoltaic slats. Each slat has a photovoltaic sheet with interconnection grooves which define thin film solar cells monolithically connected in series. The solar cells include at least two coupling thin film solar cells (40′), each one having a through hole and a close-pattern isolation groove surrounding the through hole to define an inactive area of the coupling single thin film solar cell surrounding the through hole.

The embodiments of the present disclosure provide a method for a shared bicycle delivery and an operation area planning in a smart city and an Internet of Things (IoT) system thereof. The method may be implemented based on a management platform of the Internet of Things (IoT) system. The method includes: obtaining reference information of people flow in at least one target area, determining a predicted people flow in the at least one target area at a target time, and determining a demand quantity for shared bicycles; obtaining historical data of shared bicycles in a plurality of reference areas, and predicting a variation quantity of shared bicycles in the at least one target area at the target time; and determining a delivery quantity of shared bicycles in the at least one target area at the target time.

Building integrated photovoltaic (BIPV) systems provide for solar panel arrays that can be aesthetically pleasing to an observer. BIPV systems can be incorporated as part of roof surfaces as built into the structure of the roof, particularly as photovoltaic modules having the appearance of a plurality of roofing tiles that each have photovoltaic cells. Each photovoltaic module may include a metal backer, photovoltaic cells, and light transmissive top sheets adhered to both the metal backer and the photovoltaic cells. BIPV systems can also include non-photovoltaic modules that appear similar to photovoltaic modules, but do not collect solar energy.

A method for measuring humidity at long range using simplified equipment includes creating a formula according to a relationship between multiple sets of known optical flow feature vectors and a known humidity. First and second images are obtained, wherein the first image and the second image are captured as being in the same range of capture. A plurality of feature points in the first image is obtained and an optical flow feature vector for each of the feature points according to apparent changes in position of each feature point according to the second image are calculated. The degree of current humidity according to the optical flow feature vectors and the formula is thus obtained.