background: understanding the learning styles of medical students can drive the institutions to adapt instructional materials to enhance students’ learning of knowledge and skills. this study explored the learning styles of undergraduate medical students, comparing gender variations in terms of their significant preferences. materials and methods: a cross-sectional observational study was perfo...

This paper begins with a quick survey of potential space applications and brief review previous experiments on the shape control spherical shell reflector thin film PVDF-TrFE. Next, problem thermal sensitivity is addressed numerically; it found that, because large expansion active material, surface figure error generated by linear gradient unimorph considerable its correction requires voltages....

Abstract The heat transfer characteristics of the collector tube is one cores a linear Fresnel reflector-solar thermal power generation system (LFR-CSP). In this paper, model reflective single-tube compound parabolic (CPC) established. light normal operating conditions during day, it found that direct irradiation (DNI) and loop length exert significant effects on collection loss performance ref...

In the design of a large deployable mesh reflector, high surface accuracy is one ultimate goals since it directly determines overall performance reflector. Therefore, evaluation needed in many cases and analysis reflectors. The usually specified as root-mean-square error, which measures deviation geometry from desired working surface. this paper, methods error calculation for reflectors are rev...

The recently developed Spring Back Reflector has low stiffness in the deployed configuration. A general method of stiffening this type of reflector without changing its folding properties is presented. The stiffening is achieved by adding a conical skirt around the edge of the dish; this skirt snaps elastically when the dish is folded. The paper concludes that it is possible to design spring ba...

In this paper, we present a distributed approach to detecting a type of distributed denial of service attack known as reflector attacks. In our approach, every potential reflector monitors the incoming packets and broadcasts a warning message to other potential reflectors if any abnormal traffic is observed. The warning message contains a description of the abnormal traffic it has observed. A d...

We demonstrate for what we believe to be the first time the generation of sequences of ultrafast optical pulses by phase modulation in a direct space-to-time pulse shaper. The pulse shaper is based on the combination of a reflective arrayed waveguide grating multiplexer and an external reflector. The spatial modulation of the phase was obtained by fabricating corrugated patterns on the external...

A transient quasi-analytic method is improved to analyze the offset reflector for impulse radiating antenna (IRA) applications. Physical optic (PO) approximation and analytic time transform (ATT) are utilized to investigate the time domain (TD) radiating characteristics of the offset reflector. With the appropriate coordinate transformation, the TD far-field integral problem can be simplified t...

The versatility and real-time imaging capability of commercial linear array transducers make them widely used in clinical ultrasound and photoacoustic imaging. However, they often suffer from limited detection view. For instance, acoustic waves traveling at a grazing angle to the transducer surface are difficult to detect. In this letter, we propose a simple and easy approach to ameliorate this...