We have constructed Bianchi type-III cosmological model with strange quark matter attached to the string cloud in Barber's (Gen. Relativ. Gravit. 14:117, 1982) second self-creation theory of gravitation which is inflationary. Further it is obtained that the theory leads to Einstein theory at initial epoch and at infinite future.

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Measurements of consistency and accuracy are standard techniques to assess the performance of a weapon in case of direct fire kill mechanism. It is often determined from the scoring pattern of a witnessing target erected at a known distance in an open range making use of an in‐line CCD camera with suitable long‐range optics or using an array of acoustic/optical sensors in the close vicinity of the target. In the case of indoor range, acoustic and optical sensors are used to determine the same preferably for small‐caliber ammunitions. However, all these indirect methods are subjected to the constraint of triangulation error. In case of high‐caliber ammunitions, especially fired from tank guns, witnessing targets and acoustics methods are used although it is time‐consuming and labor‐intensive in nature. To overcome these difficulties a virtual scoring method is proposed. Herein, a high‐speed video camera is used for in‐line image acquisition of the projectile at the desired distance using long‐range optics. The virtual target is defined making use of an optical detector placed at the target distance and under the trajectory, where a trigger is generated when the projectile passes over it. This hardware trigger is sent to the high‐speed video camera and then the spatial coordinates of the projectile in the virtual plane is determined off‐line making use of necessary image processing and image analysis. A feasibility study of this technique was performed in a scaled‐down model and laid down in greater details.

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