Introduction: The most important aspect of a pediatric eye exam is the quantitative measurement of visual acuity, yet many children in a pediatric practice are nonverbal or preverbal. Methods: The clinician has a number of options for assessing vision in these children, including the central, steady, maintained technique, behavioral measurements, and electrophysiological measurements. Each of t...

Bu çalışmada; dış rotorlu ve yüzeye monte mıknatıslara sahip bir Vernier makinanın tüm geometrik parametrelerinin performans karakteristiklerine olan etkisi detaylı şekilde incelenmiştir. çalışmanın amacı, düşük hız yüksek moment uygulamalarında kullanılan Kalıcı Mıknatıslı makinalar (KMVM) için mıknatıs, diş açıklığı kalınlık genişlikleri, hava aralığı genişliği, rotor çaplarının iç çapına ora...

Vernier offset thresholds for targets modulated in luminance or isoluminantly along the L-M axis were confirmed to be equal for targets whose contrasts were equal multiples of those required for detection. On the other hand, stereoscopic depth thresholds were elevated by a factor of 10 or more for isoluminantly modulated targets. Thresholds for vernier targets are 2 or 3 times larger with a gap...

Silicon-on-insulator racetrack resonators can be used as multiplexers in wavelength division multiplexing applications. The free spectral range should be comparable to the span of the C-band so that a maximum number of channels can be multiplexed. However, the free spectral range is inversely proportional to the length of the resonator and, therefore, bending losses can become non-negligible. A...

Latching alignment stages for micro-opto-mechanical systems are constructed by deep reactive-ion etching of bonded silicon on insulator. Linear, rotary and tilt stages are demonstrated. Linear stages are driven using buckling electrothermal actuators, and latching is performed by a rack-and-tooth mechanism driven by shape bimorph actuators. In-plane rotation is obtained by using a linear actuat...

We propose and experimentally demonstrate a refractive index (RI) sensor based on cascaded microfiber knot resonators (CMKRs) with Vernier effect. Deriving from high proportional evanescent field of microfiber and spectrum magnification function of Vernier effect, the RI sensor shows high sensitivity as well as high detection resolution. By using the method named "Drawing-Knotting-Assembling (D...

This paper proposes a novel dual-consequent-pole Vernier memory machine (DCP-VMM) featuring alternatively arranged NdFeB and low coercive-force (LCF) magnet poles on the rotating and stationary sides, respectively. Due to the presence of LCF magnets that can be repetitively magnetized or demagnetized via a simple current pulse, the extra-high torque density at low-speed, and excellent high-effi...