The article analyzes a prestressed reinforced concrete dapped-end beam of rectangular cross-section. negative effect reinforcement prestressing on the bearing capacity is analyzed. numerical model made based an experiment and nonlinear analysis performed using DIANA FEA software package to determine different intensity beam. results are compared with analytical calculations behavior described i...

In article 1600156, convolution operations are performed on 2-bit coding metasurfaces to steer a radiation pattern to the desired directions with negligible distortion, and to make continuous beam scanning in the upper-half space, by Tie Jun Cui and co-workers. This universal coding scheme provides another degree of freedom in designing the radiation patterns using coding metasurfaces by using ...

This note reports a number of different layouts for designing a high intensity proton driver. Such a machine should perform beam accumulation and bunch compression in order to achieve the performance needed for the production of neutrino in the context of a Neutrino Factory. The different approaches are described in details as well as the optics of the various lattices. Geneva, Switzerland 14 J...

Ray optics and phase ellipse Optics are developed as tools for designing charged particle beam guidance systems. Specific examples of basic optical systems and of phase ellipse matching are presented as illustrations of these mathematical techniques. Presented at the Conference on Charged Particle Optics Giessen, West Germany September 8-12, 1980 also submitted to Nuclear Instruments and Method...

Links in many real-world networks activate and deactivate in correspondence to the sporadic interactions between the elements of the system. The activation patterns may be irregular or bursty and play an important role on the dynamics of processes taking place in the network. Information or disease spreading in networks are paradigmatic examples of this situation. Besides burstiness, several co...

Ultrasonic beam steering characteristics of phased array transducer is mathematically modeled to detect and locate the obstacle for the visually impaired. The main purpose of Beam steering is to steer the beam at a given angle to investigate the object along the beam direction. The effects of various transducer parameters on beam steering properties are studied and optimal phased array is simul...

A low-power test system using a vector network analyzer is constructed to evaluate the performance of phase correcting mirrors in a matching optics unit (MOU). The MOU is used in order to facilitate the good coupling of a millimeter wave beam from a gyrotron into corrugated waveguides. The newly developed diagnostic system allows us to make measurements not only of intensity-, but also of phase...

background and aims. at present, cone beam computed tomography (cbct) has become a substitute for computed tomography (ct) in dental procedures. the metallic materials used in dentistry can produce artifacts due to the beam hardening phenomenon. these artifacts decrease the quality of images. in the present study, the number of artifacts as a result of beam hardening in the images of dental imp...

This paper describes an approach to visualizing the detection of failure in Reinforced Concrete Beam Structure under various types of loadings. Several Reinforced Concrete Design (RCD) tools have been developed to support RCD, but there is little evidence that these solutions address the needs of the users. We studied RCD analysts’ daily activities in order to understand their routine work prac...

The present work considers the active vibration control of beam like structures with laminated piezoelectric sensor and actuator layers bonded on top and bottom surfaces of the beam. A finite element model based on Euler-Bernoulli beam theory has been developed. The contribution of the piezoelectric sensor and actuator layers on the mass and stiffness of the beam has been considered with modeli...