نتایج جستجو برای: dark channel prior
تعداد نتایج: 535551 فیلتر نتایج به سال:
با توجه به پیشرفت روز افزون سیستم های دیجیتال در همه زمینه های فناوری از جمله مخابرات مدرن و از طرف دیگر ماهیت آنالوگ سیگنالهای موجود در طبیعت نیاز بسیار وسیعی به مبدلهای آنالوگ به دیجیتال و دیجیتال به آنالوگ با مشخصات دینامیک و استاتیک مختلف وجود دارد. از آنجا که مبدلهای آنالوگ به دیجیتال مهمترین گلوگاه در مدارات دیجیتال با ورودی آنالوگ محسوب می شوند از این رو تلاشهای فراوانی برای افزایش سرعت ...
We propose photo-BJMOSFET (Bipolar Junction Metal-Oxide-Semiconductor Field Effect Transistor) fabricated on SOI film. ITO film is adopted in the device as gate electrode to reduce light absorption. I-V characteristics of photo-BJMOSFET obtained in dark (dark current) and under 570nm illumination (photo current) are studied furthermore to achieve high photo-to-dark-current contrast ratio. Two v...
We explore dark matter in the Finely Tuned Minimal Supersymmetric Standard model recently proposed by Arkani-Hamed and Dimopoulos. Relative to the MSSM, there are fewer particles at freezeout, so the calculation of the relic abundance simplifies. Similarly, the predictions for direct detection of the dark matter sharpen. There is a large region of mixed bino–higgsino dark matter where the light...
To make fast and accurate behavioral choices, we need to integrate noisy sensory input, take prior knowledge into account, and adjust our decision criteria. It was shown previously that in two-alternative-forced-choice tasks, optimal decision making can be formalized in the framework of a sequential probability ratio test and is then equivalent to a diffusion model. However, this analogy hides ...
Two photoactivable derivatives of tetrodotoxin have been synthesized. Electrophysiological experiments on crab giant axons and competitive binding with [3H]-tetrodotoxin for the tetrodotoxin receptor indicate that they are only 4.5 to 7.5 times less active than tetrodotoxin itself. These compounds give a reversible block of the sodium channel in the dark but after ultraviolet irradiation they p...
A new technique for remote sensing of aerosol over the land and for atmospheric correction of Earth imagery is developed. It is based on detection of dark surface targets in the blue and red channels, as in previous methods, but uses the 2.1m channel, instead of the 3.75 m for their detection. A 2.1m channel is present on ADEOS OCTS and GLI, and planned on EOS-MODIS and EOSP, and a similar 2.2m...
glutamatergic system stimulationthe nucleus accumbens shell, may affect anxiety-related behaviors, aversive learning and memory. glutamate receptors are differentially distributed in pre- and postsynaptic sites contributing to neuronal communications.the present study aimed to examine the possible involvement of the nac shell presynaptic nmda receptors on nmda induced responses, using the eleva...
Due to the influence of haze in winter, outdoor images usually lose contrast and fidelity. In view fact that most de-fog algorithms are not effective for with large sky areas, an improved dark channel a priori method is proposed. First all, region segmented according image gradient information, on basis segmentation, atmospheric light value reasonably estimated by setting discriminant formula c...
postconditioning is a simple and safe strategy for cardioprotection and infarct size limitation. our previous study showed that oxytocin (ot) exerts postconditioning effect on ischemic/reperfused isolated rat heart. the aim of this study was to investigate the involvement of ot receptor, mitochondrial atp-sensitive potassium channel (mkatp), nitric oxide (no) and cyclooxygenase (cox) pathways i...
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