Search results for "Operation"
showing 10 items of 2969 documents
Research and Clinical Routine in the next Century,Segregation or Cooperative Networks?
2001
Reading the daily newspaper one gets the impression that German universities and clinical research in particular are in a deep crisis, and that German professors are to be blamed for it. In medicine, additional insufficiencies of the system are obvious, beginning with corruption cases brought up against clinicians and ending with conflicts of interest due to the fact that clinical professors in addition to research and teaching devote much of their time to the special care of private patients. These headlines in the news tend to let us forget that during the last decade grant moneys for research projects stagnated whereas the number of grant applications has increased out of proportion. In …
Health policy model: long-term predictive results associated with the management of hepatitis C virus-induced diseases in Italy
2014
Francesco Saverio Mennini,1,2 Andrea Marcellusi,1,3 Massimo Andreoni,4 Antonio Gasbarrini,5 Salvatore Salomone,6 Antonio Craxì71Centre for Economic and International Studies (CEIS) – Economic Evaluation and HTA (EEHTA) Faculty of Economics, University of Rome Tor Vergata, Rome, Italy; 2Institute of Leadership and Management in Health, Kingston University, London, UK; 3Department of Demography, University of Rome La Sapienza, Rome, Italy; 4Department of Public Health and Cell Biology, School of Medicine, University of Rome Tor Vergata, Rome, Italy; 5Gastroenterology Division, Catholic University of the Sacred Heart of Rome, School of Medicine, Rome, Italy; 6Department of…
Project Selection by Constrained Fuzzy AHP
2004
The selection of a project among a set of possible alternatives is a difficult task decision makers have to face. Difficulties in selecting a project arise because of the different goals involved and because of the large number of attributes to consider. Our approach is based upon a fuzzy extension of the Analytic Hierarchy Process (AHP). This paper focuses on the constraints that have to be considered within fuzzy AHP in order to take in account all the available information. This study demonstrates that by considering all the information deriving from the constraints better results in terms of certainty and reliability can be achieved.
On finiteJ-groups
2003
AbstractCharacterisations of finite groups in which normality is a transitive relation are presented in the paper. We also characterise the finite groups in which every subgroup is either permutable or coincides with its permutiser as the groups in which every subgroup is permutable.
Galerkin Scheme-Based Determination of Survival Probability of Oscillators With Fractional Derivative Elements
2016
In this paper, an approximate semi-analytical approach is developed for determining the first-passage probability of randomly excited linear and lightly nonlinear oscillators endowed with fractional derivative elements. The amplitude of the system response is modeled as one-dimensional Markovian process by employing a combination of the stochastic averaging and the statistical linearization techniques. This leads to a backward Kolmogorov equation which governs the evolution of the survival probability of the oscillator. Next, an approximate solution of this equation is sought by resorting to a Galerkin scheme. Specifically, a convenient set of confluent hypergeometric functions, related to …
Pricing Policies of Excess Capacity in Make to Order Production Systems
2014
The research concerns a make to order manufacturing environment and two classes of customers who submit orders. The core customers have a contract with the firm at fixed services level (price and due date). The short-term customers submit the orders based on the price set by the firm. In this paper, it is proposed a pricing policy based on fuzzy logic to set the price for the short-term customers. The fuzzy approach captures the state of the manufacturing systems in terms of congestion in order to set the price. The policy proposed is compared to a fixed price, and to a state-dependent policy based on three levels of price. A discrete event simulation environment is used to test the propose…
Service quality benchmarking via a novel approach based on fuzzy ELECTRE III and IPA: an empirical case involving the Italian public healthcare conte…
2017
A novel fuzzy-based approach which combines ELECTRE III along with the Importance-Performance Analysis (IPA) is proposed in the present work to comparatively evaluate the service quality in the public healthcare context. Specifically, ELECTRE III is firstly considered to compare the service performance of examined hospitals in a noncompensatory manner. Afterwards, IPA is employed to support the service quality management to point out improvement needs and their priorities. The proposed approach also incorporates features of the Fuzzy Set Theory so as to address the possible uncertainty, subjectivity and vagueness of involved experts in evaluating the service quality. The model is applied to…
The dynamics of technological substitution: the case of eco-innovation diffusion of surface cleaning products
2016
Some eco-innovations have already reached a mature state, but they diffuse slowly. There is little known about the importance of various factors on the diffusion process of eco-innovations. The aim of this research is to propose a conceptual model for eco-innovation diffusion, where particular case study of eco-innovation – micro-fibre cloth (MFC) for surface cleaning purposes – is given. The work will study the relative importance of various motivations on diffusion processes as well as the influence of information campaigns. This novel methodology has been developed under the system dynamics framework and is coupled with the logistic regression model. Structural validation tests were done…
A multi-objective optimal allocation of treated wastewater in urban areas using leader-follower game
2020
Abstract This study proposes a new method for optimal allocation of Treated Wastewater (TW), in which different stakeholders, their social position in decision-making, and priority of objectives were attended using the leader-follower game theory. The suggested methodology was applied in a case study in the eastern part of Tehran province in Iran, where the Water and Sewage Department is considered the leader and four TW dependent districts are the followers in the game model. The leader appropriates a certain TW quantity to the system, and the followers compete for the allocated resources in the face of various physical and sociopolitical constraints. The Nash-Harsanyi production function …
A Planning and Control System for Self-Driving Racing Vehicles
2018
Autonomous robots will soon enter our everyday life as self-driving cars. These vehicles are designed to behave according to certain sets of cooperative rules, such as traffic ones, and to respond to events that might be unpredictable in their occurrence but predictable in their nature, such as a pedestrian suddenly crossing a street, or another car losing control. As civilian autonomous cars will cross the road, racing autonomous cars are under development, which will require superior Artificial Intelligence Drivers to perform in structured but uncertain conditions. We describe some preliminary results obtained during the development of a planning and control system as key elements of an A…