Backscatter communication (BackCom), which allows a backscatter node (BN) to communicate with the reader by modulating and reflecting the incident continuous wave from the reader, is considered as a promising solution to power the future Internet-of-Things. In this paper, we consider a single BackCom system, where multiple BNs are served by a reader. We propose to use the power-domain non-ortho...

The efficiency of gas transport to the free and upper troposphere in convective clouds is investigated in an axisymmetric dynamic cloud model with detailed microphysics. In particular, we examine the sensitivity of gas transport to the treatment of gas uptake by different ice hydrometeors. Two parameters are used to describe this uptake. The gas retention coefficient defines the fraction of dis...

A single vacuum tube based solar cooker has high energy and exergy efficiency, and is capable of achieving cooking temperatures as high as 250 C. The reason for high energy and exergy efficiencies of this solar cooker is the high achievable concentration ratios of 15e20, which are not possible with multiple vacuum tube based solar cookers. In this paper, a comparative study has been carried out...

in this paper different channels of pomegranate marketing in lorestan province are identified and the economic evaluation of these path ways is discussed. for this purpose, the different marketing margins, the share of marketing agents of final price of product, marketing cost coefficient and marketing efficiency in each channel was calculated. the necessary cross-sectional data and information...

A program for computing pure angular momentum coefficients in relativistic atomic structure for any scalar one– and two–particle operator is presented. The program, written in Fortran 90/95 and based on techniques of second quantization, irreducible tensorial operators, quasispin and the theory of angular momentum, is intended to replace existing angular coefficient modules from GRASP92. The ne...

iran isone of the main pistachiogrowersinthe world. kerman province is the largest grower of pistachio and sirjan is one of the most important pistachio production areas of kerman province. it is important to the study of efficiency status of pistachio growers and improvetheir efficiency and optimum use of resources in the production. the purpose of this study was to determinationtechnical effi...

The single-index varying-coefficient models include many types of popular semiparametric models, i.e. single-index models, partially linear models, varying-coefficient models, and so on. In this paper, we first establish the semiparametric efficiency bound for the single-index varying-coefficient model, and develop an estimation method based on the efficient estimating equations. Although our m...