A method for evaluating a damage power of confined explosion, includes: determining a size of a confined case and a thickness of a target plate according to a requirement of evaluation on damage effectiveness of a warhead to establish an explosive damage effectiveness evaluation platform; calibrating parameters of the platform with a series of confined explosion tests of trinitrotoluene (TNT) bare charges in the case to form a relational map, in which a deflection of a mid-point of the target plate changes with a charge mass; obtaining a deflection of the mid-point of the target plate by detonating different warheads, forming different detonation atmosphere and forming different venting configuration in the case, and performing interpolation through the map to obtain an equivalent bare charge as an evaluation index. The method quantitatively evaluates the damage effectiveness of the warhead, and is not limited by the damage component.

A damage matrix generating device proposed. The damage matrix may include a memory and a processor configured to control the memory. The processor may acquire warhead fragment data obtained by classifying mass and number of fragments scattering in given directions as a warhead is detonated, and target vulnerable area data obtained by classifying a vulnerable area according to an encounter relationship between a fragment and a target. The processor may also generate a virtual target based on an approach direction of the fragment to each of the grids, the grids dividing a ground plane. The processor may further generate a damage matrix by extracting encounter information of fragments to meet the virtual target as the fragments scatter in the given directions based on the warhead fragment data and calculating a damage probability for each ground location according to the encounter information based on the target vulnerable area data.

A damage matrix generating device proposed. The damage matrix may include a memory and a processor configured to control the memory. The processor may acquire warhead fragment data obtained by classifying mass and number of fragments scattering in given directions as a warhead is detonated, and target vulnerable area data obtained by classifying a vulnerable area according to an encounter relationship between a fragment and a target. The processor may also generate a virtual target based on an approach direction of the fragment to each of the grids, the grids dividing a ground plane. The processor may further generate a damage matrix by extracting encounter information of fragments to meet the virtual target as the fragments scatter in the given directions based on the warhead fragment data and calculating a damage probability for each ground location according to the encounter information based on the target vulnerable area data.

A system including: a container that is arranged to enclose, at least in part, an object; a monitoring device that is disposed inside or on an exterior surface of the container and configured to monitor the object; a notification device that is coupled to the container, the notification device including: (1) an output unit that is arranged to provide a first indicator and a second indicator, (2) a memory that is configured to store a first threshold, and (3) a processing circuitry that is configured to: establish a connection with the monitoring device; receive a first parameter value from the monitoring device, the first parameter value corresponding to a parameter of the object that is monitored by the monitoring device; detect, based on the first parameter value, whether the parameter has crossed the first threshold; and turn on the first indicator when the first threshold is crossed.

An arrow shaft weak spine detector may include a first plate, a second plate, a first shaft retainer in a second shaft retainer. The second plate is spaced from the first plate to receive an arrow shaft therebetween and is movable along a first axis toward the first plate to compress the arrow shaft. The first shaft retainer is supported by the first plate to engage a first axial end on the arrow shaft. The first shaft retainer is rotatable about a second axis coincident or parallel to the first axis. The second shaft retainer is supported by the second plate to engage a second axial end of the arrow shaft and is rotatable about the second axis.

An arrow shaft weak spine detector may include a first plate, a second plate, a first shaft retainer in a second shaft retainer. The second plate is spaced from the first plate to receive an arrow shaft therebetween and is movable along a first axis toward the first plate to compress the arrow shaft. The first shaft retainer is supported by the first plate to engage a first axial end on the arrow shaft. The first shaft retainer is rotatable about a second axis coincident or parallel to the first axis. The second shaft retainer is supported by the second plate to engage a second axial end of the arrow shaft and is rotatable about the second axis.

Disclosed are an organic photoelectric device including a first electrode and a second electrode facing each other and a photoelectric conversion layer between the first electrode and the second electrode, wherein the photoelectric conversion layer includes a p-type semiconductor, an n-type semiconductor, and an n-type dopant represented by Chemical Formula 1, and an image sensor and an electronic device including the same. ##STR00001## Definitions of Chemical Formula 1 are the same as defined in the detailed description.

Disclosed are an organic photoelectric device including a first electrode and a second electrode facing each other and a photoelectric conversion layer between the first electrode and the second electrode, wherein the photoelectric conversion layer includes a p-type semiconductor, an n-type semiconductor, and an n-type dopant represented by Chemical Formula 1, and an image sensor and an electronic device including the same. ##STR00001## Definitions of Chemical Formula 1 are the same as defined in the detailed description.

A lightweight ballistic armor system comprising at least one metal strike face plate, a laminate composite backing material secured to the at least one metal strike face plate and an optional air space provided between the metal strike face plate and the laminate composite backing material. The metal strike face plate or plates has a predetermined defined thickness and has a plurality of slotted holes set at an angle relative to the vertical orientation or axis of the metal strike face plate, or which are straight. The plurality of slotted holes is sufficiently small to prevent the passage of a projectile or fragment therethrough. The laminate composite backing material comprises at least one material selected from an aramid fiber material, S-glass, E-glass, polypropylene and UHMWPE, and is provided in combination with a polymer-based resin material. The optional air space provided between the metal strike face plate and the composite backing material has a depth in the range between 0-12 inches.

A lightweight ballistic armor system comprising at least one metal strike face plate, a laminate composite backing material secured to the at least one metal strike face plate and an optional air space provided between the metal strike face plate and the laminate composite backing material. The metal strike face plate or plates has a predetermined defined thickness and has a plurality of slotted holes set at an angle relative to the vertical orientation or axis of the metal strike face plate, or which are straight. The plurality of slotted holes is sufficiently small to prevent the passage of a projectile or fragment therethrough. The laminate composite backing material comprises at least one material selected from an aramid fiber material, S-glass, E-glass, polypropylene and UHMWPE, and is provided in combination with a polymer-based resin material. The optional air space provided between the metal strike face plate and the composite backing material has a depth in the range between 0-12 inches.