نتایج جستجو برای: mechanical efficiency
تعداد نتایج: 616288 فیلتر نتایج به سال:
Energy and exergy concepts come from thermodynamics laws and are applicable to all fields of science and engineering. This study considers numerical simulations of combustion of hydrogen with air in a constant pressure environment and exergy terms according to first and second laws analysis using homemade code. Chemical kinetic model includes 20 reactions and 9 species. At the first stage of p...
Taxonomies of concepts are important across many application domains, for instance online shopping portals use catalogs to help users navigate and search for products. Task-dependent taxonomies, e.g., adapting the taxonomy to a specific cohort of users, can greatly improve the effectiveness of navigation and search. However, taxonomies are usually created by domain experts and hence designing t...
Many societal decision problems lie in high-dimensional continuous spaces not amenable to the voting techniques common for their discrete or single-dimensional counterparts. These problems are typically discretized before running an election or decided upon through negotiation by representatives. We propose a meta-algorithm called Iterative Local Voting for collective decision-making in this se...
BACKGROUND Prolonged controlled mechanical ventilation depresses diaphragmatic efficiency. Assisted modes of ventilation should improve it. We assessed the impact of pressure support ventilation versus neurally adjusted ventilator assist on diaphragmatic efficiency. METHOD Patients previously ventilated with controlled mechanical ventilation for 72 hours or more were randomized to be ventilat...
The Complaint Model is an interpretation of Scanlon’s contractualism which holds that (1) an individual can reasonably reject a distribution of well-being when her complaint against that distribution is larger than any other person’s complaint against any other distribution. The Complaint Model further holds that (2) the size of an individual’s complaint against a distribution is a function of ...
A recently introduced concept of cooperative equilibrium [7], based on the assumption that players have a natural attitude to cooperation, has been proven a powerful tool in predicting human behaviour in social dilemmas. In this paper, we extend this idea to more general game models, termed Pareto solvable games, which in particular include the Nash Bargaining Problem and the Ultimatum Game. We...
This study aims at correlate Wmec and Cr with Eff. Twelve healthy men volunteered in the study. Wmec and Cr were measured during a treadmill running test which consisted in a rest period, incremental warm up and running test at 10km.h -1 . The biomechanical data, rest oxygen consumption (VO2) and exercise VO2 data were obtained. Relationships between variables were investigated using Pearson’s ...
the treatment of in completely formed pulpless teeth has presented considrable problems. these teeth have wide open apexes and the walls of the root canal diverge toward the apical tissues. mechanical preparation cannot be done in the normal manner beacause of the large initial size and the taper of apical part of the canal , a mechanical stop cannot be produced at the apex of the canal and , t...
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