نتایج جستجو برای: روش cobb
تعداد نتایج: 372782 فیلتر نتایج به سال:
DOROTHY A. STANSFIELD, Thomas Beddoes MD, 1760-1808, Dordrecht, Reidel, 1984, 8vo, pp. xx, 306, Dfl.140.00/$54.00. Thomas Beddoes has been the subject of intermittent study, manifested through a succession of more or less specialized papers, mostly on his pneumatic studies. His political involvements have also been noticed, but usually in ways that do not reveal any substantial connexion betwee...
We show that the proportional response algorithm for computing an economic equilibrium in a Fisher market model can be interpreted as iteratively approximating the economy by one with Cobb-Douglas utilities, for which a closed-form equilibrium can be obtained. We also extend the method to allow elasticities of substitution at most one.
BACKGROUND Radiographic evaluation for patients with scoliosis using Cobb method is the current gold standard, but radiography has radiation hazards. Several groups have recently demonstrated the feasibility of using 3D ultrasound for the evaluation of scoliosis. Ultrasound imaging is radiation-free, comparatively more accessible, and inexpensive. However, a reliable and valid 3D ultrasound sys...
This paper constructs China’s capital stock, which is used in conjunction with a labor variable to estimate a Cobb-Douglas production function for the Chinese economy. Two panels of data are used – one for capital formation and one for sources of investment finance. Both national and provincial data are used for these two panels, thus giving a total of four capital-stock series. The Cobb-Dougla...
Material and methods We have used the Formetric 4D-Dicom II system, which is supplied also with lateral Cobb angle measurement. We have examined 616 patients (432 females and 184 males), age 5 y to 21 y. The patients have been visited clinically by inspection, Adams forward bending test and Perdriolle scoliometer. We have fit, to every patient, 4-8 reflectors on the apex of T1 through L4 spinal...
Introduction In patients with AIS, standing radiographs are the standard of care for curve surveillance, but have negative long-term effects from repeated x-ray exposure. MRI provides high quality images in the coronal plane that can be used to measure Cobb angles. Because MRI is done in the supine position, there is no gravitational effect and curve magnitudes appear smaller. Gravity can be re...
BACKGROUND CONTEXT Progressive scoliosis alters lung function by reducing chest wall compliance and excursion and rotating intrathoracic contents, producing an increasingly asymmetric lung size. The effect of this distortion on regional lung perfusion and ventilation has not been described in children with congenital and infantile forms of scoliosis. The severity of scoliosis is often described...
Background The case study describes a patient with scoliosis after tethered spinal cord-symptomatic was surgically resolved at the age of 21⁄2 months. At that time, the Cobb angle of the thoracic curve was 32°. At the age of 30 months a three curved thoracic left-scoliosis with a Cobb angle of 80° with serious shape-shift in frontal and sagittal level appeared. At the age of 41⁄2 years the pati...
In this paper we examine whether nonlinearities in the aggregate production function can explain parameter heterogeneity in the Solow (1956) growth regressions. Nonlinearities in the production technology are introduced by replacing the linear Cobb-Douglas specification with the more general CES specification. We justify our choice of production function by showing that in the context of cross-...
Although a number of different models have been suggested for the process that brings workers and firms together in the labour market, none of these performs well in empirical studies of the aggregate matching function. Empirically, the most successful functional form is Cobb-Douglas, for which there are no microfoundations in the existing literature. I present a new model for the matching proc...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید