Results 201 to 210 of about 2,741,438 (260)

Sustainable Synthesis of Bio‐Based Magnetic and Conductive Wood for Electromagnetic Interference Shielding Applications

Advanced Engineering Materials, EarlyView.
A wood‐based magnetic and conductive material called Magwood (MW), capable of blocking almost 99.99% of electromagnetic waves (in the X‐band frequency range), is synthesized using a simple, solvent‐free process. MW is lightweight, resists water, and is flame‐retardant, making it a promising alternative for shielding electronics. The rapid proliferation
Akash Madhav Gondaliya, Majed Amini, Mohammad Arjmand, Earl Johan Foster   +3 more
wiley   +1 more source

Thermoelectric Modules Incorporating MgAgSb and Mg3(Sb,Bi)2 Synthesized Using a Melting Method

Advanced Engineering Materials, EarlyView.
A scalable synthesis method for a thermoelectric material of MgAgSb is established. A thermoelectric power module of MgAgSb/Mg3(Sb,Bi)2 is fabricated, showing the conversion efficiency of 7.4% at ΔT = 315 K. The performance is comparable to conventional Bi2Te3 modules when they are operated with an air‐cooled heat exchanger.
Kazuo Nagase, Hironori Ohshima, Kunihiro Kihou, Haruno Kunioka, Ushin Anazawa, Ryosuke Sakagami, Yosuke Goto, Masayuki Murata, Chul‐Ho Lee   +8 more
wiley   +1 more source

Population of Nonmetallic Inclusions in Liquid High‐Silicon Electrical Steel in Contact With MgO–C Refractories Based on Recyclates and Environmentally Friendly Binders

Advanced Engineering Materials, EarlyView.
The formation of nonmetallic inclusions (NMIs) was investigated in this study, carrying out immersion tests for 30 min at a temperature of 1600°C with liquid high‐silicon electrical steel (Si ≈ 3 mass‐%) and different MgO–C refractories. Conventional MgO–C refractories were considered, as well as MgO–C refractories containing MgO–C recyclate and ...
Lukas Neubert, Matheus Roberto Bellé, Florian Kerber, Dinesh Kumar Gunasekar, Hans‐Jörn Weddige, Christos G. Aneziris, Olena Volkova   +6 more
wiley   +1 more source

Some of the next articles are maybe not open access.

Related searches:

Institutions, Freedom, and Technical Efficiency

Southern Economic Journal, 2002
The impact of institutions on economic performance is currently the subject of much research. In this study we use panel data to estimate a stochastic production frontier and the sources of inefficiency for a broad set of countries. A maximum‐likelihood procedure is used to estimate the parameters for the stochastic production frontier and the ...
Adkins, Lee C., Moomaw, Ronald L., Savvides, Andreas   +2 more
openaire   +4 more sources

Measures of technical efficiency [PDF]

Journal of Economic Theory, 1985
\textit{R. Färe} and \textit{C. A. K. Lovell} [ibid. 19, 150-162 (1978; Zbl 0398.90012)] suggest four properties that a measure of technical efficiency should satisfy; the commonly employed Debreu-Farrell measure fails three of them. Necessary and sufficient conditions for a measure to satisfy the four conditions are provided and recently proposed ...
openaire   +2 more sources

X-efficiency and technical efficiency

Public Choice, 1994
Efficiency measurement has become a very popular field in applied economics in recent years, and with this interest there has been a large intellectual investment in refining the empirical methods available to researchers in the area. In this paper we relate these developments to Harvey Leibenstein's original 1966 insight into the psychological ideas ...
Kenneth J. Button, Thomas G. Weyman-Jones   +1 more
openaire   +1 more source

The Structure of Technical Efficiency

The Scandinavian Journal of Economics, 1983
It is common practice to decompose measures of efficiency into component measures of technical and allocative efficiency. In this paper we show how, and why, to decompose a general measure of technical efficiency into component measures of purely technical efficiency, congestion, and scale efficiency, and we investigate the properties of each measure ...
Rolf Färe, Shawna Grosskopf, C. A. Knox Lovell, Rolf Fare   +3 more
openaire   +2 more sources

Technical Efficiency in Nursing Homes

Medical Care, 1990
technical efficiency. A technically inefficient firm is one that uses more inputs than another firm to produce the same amount of output. The ranking of firms by technical efficiency, however, is limited by the explicit recognition of substitutability among inputs. For example, consider firms A, B, and C.
J A, Nyman, D L, Bricker, D, Link
openaire   +2 more sources

Pro-efficiency: Data speak more than technical efficiency

European Journal of Operational Research, 2011
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Park, K. Sam, Cho, Jin-Wan
openaire   +1 more source

Technical Efficiency in Agriculture

2020
Resource limitations in the agricultural sector for achieving food production is one of the most critical challenges for planners and policymakers in many countries including Iran. Optimal use of available resources is one of the ways to overcome these limitations.
Mohammad Ghorbani, Suren(dra) Kulshreshtha, R. Radmehr, F. Habibi   +3 more
openaire   +1 more source