نتایج جستجو برای: timing device
تعداد نتایج: 758352 فیلتر نتایج به سال:
Cooling devices and methods are now integrated into most laser systems, with a view to protecting the epidermis, reducing pain and erythema and improving the efficacy of laser. On the basis of method employed, it can be divided into contact cooling and non-contact cooling. With respect to timing of irradiation of laser, the nomenclatures include pre-cooling, parallel cooling and post-cooling. T...
A magnetic refrigeration test device has been built and tested. The device allows variation and control of many important experimental parameters, such as the type of heat transfer fluid, the movement of the heat transfer fluid, the timing of the refrigeration cycle, and the magnitude of the applied magnetic field. An advanced two-dimensional numerical model has previously been implemented in o...
In this paper a hybrid circuit is presented which comprises nanoelectronic resistive switches based on the electrochemical memory effect (ECM) as well as devices from a standard 40nm-CMOS process. A closed ECM device model, which is based on device physics, was used for simulations allowing for a precise prediction of the expected I-V characteristics. The device is used as a non-volatile and/or...
In this paper we present a technique to create WLAN device fingerprints by measuring timing properties without the use of special-purpose hardware. Our proposed process is absolutely passive and cannot be detected by the targeted device. The timing measurement is based on a delay caused by the hardware implementation of the CRC checksum algorithm at the network interface card (NIC) of the clien...
As one of variable valve timing (VVT) approaches, the electromechanical valve actuator (EMVA) uses solenoid to actuate valve movement independently for the application of internal combustion engine. This paper proposed an EMVA structure by incorporating the hybrid magneto-motive force (MMF) implementation in which the magnetic flux is combined by the coil excitation and permanent magnets. Makin...
Traditional lesion or inactivation methods are useful for determining if a given brain area is involved in the generation of a behavior, but not for determining if circuit dynamics in that area control the timing of the behavior. In contrast, localized mild cooling or heating of a brain area alters the speed of neuronal and circuit dynamics and can reveal the role of that area in the control of...
Quality imaging is a critical component in many scientific experiments. However, the imaging devices currently in use consist mainly of either point-detectors, which have poor spatial information, or large area detectors, which have poor timing information. A device which combines fast non-imaging and slow imaging techniques is ideal for scientific research in which there are low light levels a...
We propose a simple technique of stopping light pulses using a slow-light device based on photonic crystal coupled waveguide (PCCW). Dynamically tuning the material index chirp in the PCCW adiabatically transforms slow-light pulses into stopped ones. We demonstrate this in finite-difference time-domain simulation assuming ideal and actual tuning of the index chirp. In the ideal case, the group ...
We are reporting on research, development and indoor tests of the novel principle event timing system based on Surface Acoustic Wave (SAW) filter excitation as a time interpolator. Its operating principle is based on the fact that a transversal SAW filter excited by a short pulse can generate a finite signal with highly suppressed spectra outside a narrow frequency band. If the responses to two...
The intra-aortic balloon pump (IABP) was first introduced by Moulopoulos et al. in 1962 and was described clinically by Kantrowitz et al. in 1968. The subsequent development of the IABP has resulted in its widespread application, resulting in >70,000 applications per year, making it the most common cardiac assist device after pharmacologic intervention. The correct timing of the inflation and d...
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