Search results for "costs"
showing 10 items of 332 documents
A Unified Approach to Portfolio Optimization with Linear Transaction Costs
2004
In this paper we study the continuous time optimal portfolio selection problem for an investor with a finite horizon who maximizes expected utility of terminal wealth and faces transaction costs in the capital market. It is well known that, depending on a particular structure of transaction costs, such a problem is formulated and solved within either stochastic singular control or stochastic impulse control framework. In this paper we propose a unified framework, which generalizes the contemporary approaches and is capable to deal with any problem where transaction costs are a linear/piecewise-linear function of the volume of trade. We also discuss some methods for solving numerically the p…
Analysis of hospital costs by morbidity group for patients with severe mental illness
2022
The goal of this study is to analyse hospital costs and length of stay of patients admitted to psychiatric units in hospitals in a European region of the Mediterranean Arc. The aim is to identify the effects of comorbidities and other variables in order to create an explanatory cost model.In order to carry out the study, the Ministry of Health was asked to provide data on access to the mental health facilities of all hospitals in the region. Among other questions, this database identifies the most important diagnostic variables related to admission, like comorbidities, age and gender. The method used, based on the Manning-Mullahy algorithm, was linear regression. The results were measured b…
From Sustainable Development to Personalised Healthcare. The Role of Institutions in the Sustainable Development of the Healthcare Systems
2015
Abstract The current issues concerning healthcare institutions are generated by: aging of the population; the increase in prevalence of non-communicable diseases, even in low/medium income countries; the continuous increase of indirect costs generated by chronic diseases; the necessity of new- patient-specific oriented therapies; the need of translation of fundamental research into practice; need of applicability of prevention strategies; an important segment of the working population becomes inactive; migration of healthcare professionals. An essential condition for the sustainable development of any community is the health and the maintenance of the health of its population, and it is ess…
Dall'impresa gerarchica alla comunità distribuita
2014
This article describes the emergence of collaborative production systems, that is those decentralized systems, different from markets and firms, where a community a loosely connected people, with a range of diverse and primarily intrinsic motivation, engage in a large scale collaboration whose outputs are governed as commons (e.g. open software, open hardware, etc.). After a description of the relationship between market system and managerial hierarchy, and the costs connected to each of these systems, the article exposes how peer production is usually organized and identifies the relative advantages of this organizational model over markets and firms under given circumstances. In the last …
The Taguchi Method Application to Improve the Quality of a Sustainable Process
2018
Taguchi's method has always been a method used to improve the quality of the analyzed processes and products. This research shows an unusual situation, namely the modeling of some parameters, considered technical parameters, in a process that is wanted to be durable by improving the quality process and by ensuring quality using an experimental research method. Modern experimental techniques can be applied in any field and this study reflects the benefits of interacting between the agriculture sustainability principles and the Taguchi's Method application. The experimental method used in this practical study consists of combining engineering techniques with experimental statistical modeling …
Access to Secondary Education in Albania: Incentives, Obstacles, and Policy Spillovers
2006
When judged either by educational attainment of adult population or by secondary and tertiary enrollment rates, by 2002 Albania compared very unfavorably to most European countries, including its neighbors. This study examines the determinants of secondary enrollment applying unobserved family effect probit model to data from Living Standards Measurement Survey 2002- 2003. The focus of the paper is to investigate the importance of access to school and to further education for enrollment. We find that both absence of a secondary school in the community and the distance from the residence location to a secondary school have strong negative effect on enrollment, controlling for family backgrou…
Why laparoscopists may opt for three-dimensional view: a summary of the full HTA report on 3D versus 2D laparoscopy by S.I.C.E. (Società Italiana di …
2018
Background Three-dimensional view in laparoscopic general, gynaecologic and urologic surgery is an efficient, safe and sustainable innovation. The present paper is an extract taken from a full health technology assessment report on three-dimensional vision technology compared with standard two-dimensional laparoscopic systems. Methods A health technology assessment approach was implemented in order to investigate all the economic, social, ethical and organisational implications related to the adoption of the innovative three-dimensional view. With the support of a multi-disciplinary team, composed of eight experts working in Italian hospitals and Universities, qualitative and quantitative d…
The Hip Fracture Surgery in Elderly Patients (HIPELD) study: protocol for a randomized, multicenter controlled trial evaluating the effect of xenon o…
2012
Trials 13, 180 (2012). doi:10.1186/1745-6215-13-180
The total social costs of constructing and operating a high-speed rail line using a case study of the Riyadh-Dammam Corridor, Saudi Arabia
2019
Introducing a High-Speed Rail technology between the Saudi Arabian cities starts raising many challenging issues of different nature ranging from technical to operational, which require huge investments in infrastructure, operations and maintenance. Background information about the development of HSR worldwide to date is included. However, the main aim of this paper is to determine a methodology to estimate the full cost of travel and provide insights into the working model developed to include the calculations of the total social costs of building a new HSR line for the Riyadh-Dammam corridor in Saudi Arabia and understand in what circumstances it is a suitable technology to use. The Sprea…
International trade and internal geography revisited
2003
Trade liberalization and trade policy obviously affect the internal distribution of economic activities within a liberalizing country. We show that the impact of decreasing international trade costs on the regional distributionof economic activities crucially depends on the value of transport costs internalto the country. Trade liberalization in developing countries with poor internal infrastructures and small volumes of interregional trade is likely to increase regional disparities, while developed countries with good internalinfrastructures and large volumes of interregional trade are likely to experienceredispersion. We argue that the way transport and trade costs are modeledmight have a…