Results 51 to 60 of about 148,147 (303)

The Role of Foreign Technology Transfer in Improving Environmental Efficiency: Empirical Evidence From China’s High-Tech Industry

Frontiers in Environmental Science, 2022
In recent years, China’s high-tech industry has made remarkable technological progress, but it has also brought serious environmental pollution, which has aroused great concern about its environmental efficiency.
Feng Peng, Xichun Zhang, Shuzhen Zhou
doaj   +1 more source

Phenomenological and Physically Based Modeling of Flow Stress and Strengthening Mechanism of Inconel 718

Advanced Engineering Materials, EarlyView.
Nickel‐based alloys are widely used in high‐temperature applications due to their excellent mechanical strength and oxidation resistance. However, properties such as high‐temperature strength and pronounced work‐hardening make them difficult to machine.
Soheil Rooein, Oliver Schenk, Christoph Broeckmann   +2 more
wiley   +1 more source

Dynamic Data Envelopment Analysis Model Involving Undesirable Outputs in the Electricity Power Generation Sector: The Case of Latin America and the Caribbean Countries

Energies, 2020
Studying the evolution of the efficiency of the electricity generation sector is a relevant task for policy makers, and requires the undesirable outputs derived from the activity to be considered in the evaluation.
Sebastian Cuadros, Yeny E. Rodríguez, Javier Contreras   +2 more
doaj   +1 more source

Designing a Mathematical Model for Optimum Assignment in the Two-stage Green Supply Chain using Network Data Envelopment Analysis and Electrical Circuits [PDF]

Muṭāli̒āt-i Mudīriyyat-i Ṣan̒atī, 2019
Nowadays, most supply chains are starting to go green in their business with pay more attention to environmental protection as competitive advantage. Therefore, Designing a two-stage green supply chain for optimum assignment a green supplier to a green ...
hossein mohebbi, adel azar, Abasali Heidari, Ameneh Khadivar   +3 more
doaj   +1 more source

On the Influence of Antioxidants and Recycled MgO–C Source Material on the Mechanical Properties of Carbon‐Bonded Magnesia Refractories

Advanced Engineering Materials, EarlyView.
The presented study focuses on the fracture behaviour of carbon‐bonded magnesia MgO–C refractories, where environmentally friendly fructose, collagen and lignin serve as temporary binding agents. The partial substitution of the source material with recycled MgO–C reduces the fracture resistance, which can be counteracted by the additional introduction ...
Marc Neumann, Tom Weber, Jana Hubálková, Florian Kerber, Dinesh Kumar Gunasekar, Hans Jelitto, Christos G. Aneziris   +6 more
wiley   +1 more source

Investigating the Effect of Congestion in Undesirable Outputs Using Data Envelopment Analysis Case study: performance Assessment of University

مدیریت تولید و عملیات, 2015
The aim of this paper is to investigate congestion in undesirable outputs. The measurement of congestion is important for performance evaluation. In order to calculate the performance and allocate resources well, it is necessary to measure congestion ...
mohammad Mahallati Rayeni
doaj  

Deterministic Detection of Single Ion Implantation

Advanced Engineering Materials, EarlyView.
Focused ion beam implantation with high detection efficiencies will enable the rapid and scalable fabrication of advanced spin‐based technologies such as qubits. This work presents the detection efficiencies of a wide range of ions implanted into solid‐state hosts, with efficiencies of >90% recorded for ion species and substrate combinations of ...
Mason Adshead, Lok Kan Wan, Maddison Coke, Janet Jacobs, Nicholas F. L. Collins, Mark C. Rosamond, Richard J. Curry   +6 more
wiley   +1 more source

Workflow for Design of Experiments‐Based Modeling of Species Transport and Growth Kinetics in GaN Hydride Vapor Phase Epitaxy

Advanced Engineering Materials, EarlyView.
A novel workflow for investigating hydride vapor phase epitaxy for GaN bulk crystal growth is proposed. It combines Design of experiments (DoE) with physical simulations of mass transport and crystal growth kinetics, serving as an intermediate step between DoE and experiments.
J. Tomkovič, G. Lukin, H. Torkashvand, A. Kerschbaum, M. Müller, S. Besendörfer, J. Heitmann, J. Friedrich   +7 more
wiley   +1 more source

A Network Bounded Adjusted Measure for Assessing the Efficiency of Agricultural and Pastoral Systems with Shared Factors and Undesirable Outputs

Agriculture
The acts of assessing the efficiency of agricultural and pastoral systems and improving their production levels have profound implications for the sustainable development of the agricultural economy.
Chunhua Chen, Chongyu Ma
doaj   +1 more source

Integrated Transport Efficiency and Its Spatial Convergence in China’s Provinces: A Super-SBM DEA Model Considering Undesirable Outputs

Applied Sciences, 2018
Undesirable outputs, such as carbon emissions and loss of property due to traffic accidents, hold great significance for the sustainable development of the transport industry.
Fei Ma, Wenlin Wang, Qipeng Sun, Fei Liu, Xiaodan Li   +4 more
doaj   +1 more source