نتایج جستجو برای: medium low technology

تعداد نتایج: 1802047  

1998
Simon Gilchrist John C. Williams Jeff Campbell Thomas Cooley Russell Cooper Sam Kortum John Leahy Scott Schuh Dan Sichel John Willis

This paper develops a general equilibrium model with putty-clay technology, investment irreversibility, and variable capacity utilization. Low short-run capital-labor substitutability induces the putty-clay effect of a tight link between changes in capacity and movements in employment and output. Permanent shocks to technology or factor prices generate a hump-shaped response of hours, persisten...

Objective(S): The chitosan - Fe3O4 core - shell nanoparticles were synthesized. The nanoparticles should be coated properly in the shape of core-shell, so that they remain hidden from the body's immune system after coating. Effects of different molecular weight in coating were investigated. Methods: Nanoparticles coated with low and ...

Journal: :Chinese journal of electrical engineering 2022

Aiming at resolving the limitation of speed regulation range sensorless control technology, a new composite strategy is proposed to realize method for permanent magnet synchronous motor (PMSM) in full range. In medium- and high-speed range, improved sliding mode observer used estimate rotor position information. zero low order avoid defects method, rotating high-frequency voltage signal injecti...

اصل ایرانیفام, ندا, حسن زاده, شاپور, سام, محمد رضا, نجفی تازه کند, غلامرضا ,

Background and purpose: Cyclophosphamide (CP) is a chemotherapy drug extensively used as an antineoplastic agent in treatment of various cancers. However, it is known to cause several adverse effects including reproductive toxicity. Achillea millefolium (AM) is a medicinal plant with potential antioxidant properties. The aim of this investigation was to evaluate the effects of different doses o...

Journal: :Journal of physics 2023

Abstract Aiming at the application of multi-source data fusion in intelligent operations medium and low voltage distribution network system, a deep learning algorithm based on is proposed this paper. Firstly, combining stop/restart signals large number users’ digital devices with existing measurement information grid, two indicators heartbeat handshake have been constructed. Secondly, convoluti...

Journal: Desert 2005
A. Golkarian E. Abrisham H. Ahmadi M. Ekhtesasi M. Jafari

There are different models for mapping and evaluation of desertification condition, such as global FAO_UNEP model. There are also several models for evaluation of desertification in Iran. In this study, tow fol/owing methods was used: 1-ICD method, (Iranian Classification of Desertification). 2- MICD method, (Modified Iranian Classification of Desertification). In this research, at first, these...

Journal: :International Journal of Environmental Science and Development 2013

Journal: :Journal of The Surface Finishing Society of Japan 2013

Journal: :The Journal of the Institute of Television Engineers of Japan 1988

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