Results 11 to 20 of about 861,339 (283)
پژوهش در نظامهای آموزشی, 2011 هدف از پژوهش حاضر تبیین نقش عزت نفس و پیشینۀ تحصیلی در عملکرد تحصیلی است. به همین منظور از میان دانشجویان دانشگاههای شهر تهران، 522 دانشجو به روش نمونهگیری تصادفی انتخاب شدند.
dc dc
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Polynomial Curve Slope Compensation for Peak-Current-Mode-Controlled Power Converters [PDF]
, 2019 Linear ramp slope compensation (LRC) and quadratic slope compensation (QSC) are commonly implemented in peak-current-mode-controlled dc-dc converters in order to minimize subharmonic and chaotic oscillations.
Deng, Xu +5 more
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Design zero-voltage switching DC-DC buck converter [PDF]
, 2014 This report proposes an integrated, high switching frequency, zero-voltage-switching dc-dc buck converter for battery charger application. The design and analysis of dc dc buck converter with integrated inductor is presented.
Chan, S. W. +4 more
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Exclusion of Musculature from the Submental Flap: A Contingency Plan for Facial Nerve Palsy
Plastic and Reconstructive Surgery, Global Open, 2014 Summary: Submental flap surgery is a useful and versatile reconstructive procedure. Currently, disagreement exists regarding the need to include the anterior belly of the digastric muscle or mylohyoid in the submental flap.
Matthew J. Zdilla, DC
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Journal of Evidence-Based Integrative Medicine, 2018 Exclusive breastfeeding for the first 6 months, and continuing for at least the first year of life, is strongly recommended. Suboptimal breastfeeding, which is breastfeeding that does not meet these recommendations, is a multifactorial issue.
Cheryl Hawk DC, PhD +4 more
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Comparative aspects in control strategies for hybrid DC-DC converters [PDF]
, 2016 Linear-switching hybrid DC/DC converters consist of a voltage linear regulator (classic NPN or nMOS topologies and LDO) connected in parallel with a switching DC/DC converter.
Cosp Vilella, Jordi +1 more
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Boost converter fed high performance BLDC drive for solar PV array powered air cooling system [PDF]
, 2017 This paper proposes the utilization of a DC-DC boost converter as a mediator between a Solar Photovoltaic (SPV) array and the Voltage Source Inverters (VSI) in an SPV array powered air cooling system to attain maximum efficiency.
Depuru, Shobha Rani +1 more
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Memorandum of Agreement (MOA) Between the District of Columbia Public Schools and the Walton Family Foundation, Inc. [PDF]
Nonpartisan Education Review, 2017 no ...
DC Public Schools
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A maximum power point tracking for a photovoltaic system based on optimum sinusoidal modulated control pulses [PDF]
, 2014 Photovoltaic systems have grown rapidly in the last few decades. This growth has enhanced research about this technology, focusing on reducing cost and improving efficiency. Maximum power point tracking (MPPT), which increases the overall efficiency of a
Alqarni, M, Darwish, MK
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Synthesis of input-rectifierless AC-DC converters [PDF]
, 2001 This paper discusses the basic construction procedure and topological possibilities of creating ac/dc converters out of simple dc/dc conveners. It is shown that two separately controlled dc/dc conveners are sufficient for producing a regulated dc output ...
Lai, YM +4 more
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