this paper investigates the performances of artificial neural networks approximation, the translog and the fourier flexible functional forms for the cost function, when different production technologies are used. using simulated data bases, the author provides a comparison in terms of capability to reproduce input demands and in terms of the corresponding input elasticities of substitution esti...

background: the purpose of this study was to detect the prevalence of ghost and honorary authors and its determinant factors in bio-medical journals of iran. methods: the study was done in 2009-10 in tehran, kerman, and iran medical universities, iran.  we contacted the first or corresponding authors of the papers had published papers in the recent two issues of iranian journal of public health...

Tungsten-containing amorphous carbon films were produced by dual magnetron sputter deposition. The formation of carbide phases after heat treatment in inert gas at temperatures up to 2800 K was investigated by X-ray diffraction for tungsten concentrations below 25 at%. After deposition, each film consists of an amorphous carbon matrix with atomically dispersed W inclusions. Annealing up to 2800...

Robert W McGee* Author Affiliations Fayetteville State University, USA Received: June 06, 2022 | Published: 15, Corresponding author: McGee, DOI: 10.26717/BJSTR.2022.44.007072

Iraj Ghadiminejad* Author Affiliations GNP Australia Pty Ltd, Received: May 27, 2022 | Published: June 09, Corresponding author: Ghadiminejad, DOI: 10.26717/BJSTR.2022.44.007056

Siniša Franjić* Author Affiliations Independent Researcher, Republic of Croatia Received: May 16, 2022 | Published: 27, Corresponding author: Franjić, DOI: 10.26717/BJSTR.2022.44.007009

Lalisa Gemechu* Author Affiliations Hawassa University, Department of Environmental Health, Ethiopia Received: March 11, 2022 | Published: 25, Corresponding author: Gemechu, DOI: 10.26717/BJSTR.2022.42.006818