Results 251 to 260 of about 5,211 (269)

Nuclide u Transport in Radioactive Waste Disposal Field with Weak Permeable Media

Applied Mechanics and Materials, 2013
This paper took nuclide U as a research object and focused on nuclide U transport. Three-dimensional conceptual model was established for nuclide U transport in certain a radioactive waste disposal field with weak permeable media. Nuclide U transport in the field was studied by means of three-dimensional numerical simulation. Results show that there is
Ying Er Deng, Wei Zhang, Ying Zi Chen
openaire   +1 more source

Comparison Analysis of Airline Energy Efficiency Under Weak Disposability and Strong Disposability Using a Virtual Frontier Slack–Based Measure Model

Transportation Journal, 2018
ABSTRACTIn this article, the energy efficiency of airlines has been studied with number of employees, capital stock, and tons of aviation kerosene as the inputs and revenue tonne kilometers, revenue passenger kilometers, total business income, and CO2 emission as the outputs.
Qiang Cui, Ye Li, Yi-Ming Wei
openaire   +1 more source

Innovation and weak labour disposability: some theoretical and empirical evidence

Applied Economics, 1997
This paper envisages theoretically and empirically the weak labour disposability and the ability of labour to innovate in a poor-capital, surplus-labour economy. Therefore, a production function where the marginal product can become zero or even negative has been derived and estimated using data from Suden over the period 1968–88, with quarterly ...
openaire   +1 more source

Infeasibility conditions and resolution strategies for super-efficiency models under weak disposability and null-jointness: A directional distance function approach with endogenous directions

European Journal of Operational Research
Ruiyue Lin, Zongxin Li
exaly   +2 more sources

Continuity of the solution set mappings for parametric unified weak quasivariational inequalities via free-disposal set mappings

Optimization, 2019
In this study, we mainly study the stability for parametric unified weak quasivariational inequality (PUWQVI) under free-disposal set mappings.
Ke-Ke Li, Zai-Yun Peng, Zhi Lin, Xian-Jun Long   +3 more
openaire   +1 more source

Performance evaluation of two stages network with undesirable outputs and weak disposability

Journal of Information & Optimization Sciences
Production and service systems include multiple stages. Network data envelopment analysis is a method that is commonly used in the evaluation of multi stage system. These stages can be classified as independent, relationship, and cooperative modes. In the real world, the presence of undesirable indicators is unavoidable in systems, and are important in
openaire   +1 more source

Distinguishing Weak and Strong Disposability among Undesirable Outputs in DEA: The Example of the Environmental Efficiency of Chinese Coal-Fired Power Plants [PDF]

, 2007
Different from traditional efficiency research and previous studies considering undesirable outputs, this paper proposes models which distinguish weak and strong disposability features among various undesirable outputs based on the technical nature of the undesirable outputs.
Yang, H., Pollitt, M.
openaire  

Nuclear Wastes: The Science of Geologic Disposal Seen as Weak

Science, 1978
openaire   +2 more sources

A modification of weak disposability in non-parametric analysis

International Journal of Mathematical Modelling and Numerical Optimisation
Mahnaz Maghbouli, Azam Pourhabib Yekta, Josef Jablonsky   +2 more
openaire   +1 more source

A data-based comparison of the five undesirable output disposability approaches in airline environmental efficiency

Socio-Economic Planning Sciences, 2021
Qiang Cui
exaly