48 research outputs found
An intelligent model for road traffic management in the motorway network around barcelona
This paper presents an advanced knowledge-based environment to develop real time traffic management applications called TRYS. The building process supported by the architecture is guided by the progressive definition of knowledge features from the knowledge level to the symbolic level. Firstly, the problem is presented showing the shortcomings perceived in the state of the art of traffic management systems. Secondly, a description of the KSM tool, aimed at supporting the organization of structured models at the knowledge level is commented. Thirdly, the generic model, intended to deal with traffic management, is described using the KSM format. Finally, the domain model of the application developed for Barcelona is described.
Document type: Part of book or chapter of boo
Effect of storage conditions on seed germination of eigTyrrhenian endemic vascular plant species of conservation interest
The conservation of endemic and endangered plant species is of great interest to the scientific and research community. In this frame, seed banks play a crucial role when biodiversity preservation and climate change are considered. The study of seed viability and germination during storage conditions provides basic and useful information to ensure successful ex situ conservation. The aim of this study was to evaluate whether storage time and conditions (i.e., base collection at -25°C and active collection at +5°C) affect seed germination in the long term. For these purposes, eight Tyrrhenian endemic vascular plant species (mostly endangered) with orthodox seeds were studied: Brassica insularis, Centranthus amazonum, Dianthus morisianus, Digitalis purpurea var. gyspergerae, Ferula arrigonii, Helicodiceros muscivorus, Iberis integerrima and Verbascum plantagineum. These species were stored in the Sardinian Germplasm Bank (BG-SAR) at -25°C and at +5°C for a time ranging from 2 to 12 years. Germination tests were carried out following the optimal conditions reported in the literature for each species. The results showed, in general terms, the high seed germination capacity of all species stored at both conditions; regarding the time of seed storage, germination in some tested species (such as B. insularis and C. amazonum) slightly decreased over time. We argued that seed dehydration, low seed moisture content during storage and the use of hermetic glass containers can be considered key factors for long-term conservation of these orthodox seeds. In conclusion, this study showed that the conservation of these endemic species is ensured by seed bank storage, according to the general assumption that seed longevity depends on seed lot quality, on well-sealed storage containers and conditions before and during storage
Advances in the Agent-based Modeling of Economic and Social Behavior
In this review we discuss advances in the agent-based modeling of economic and social systems. We show the state of the art of the heuristic design of agents and how behavioral economics and laboratory experiments have improved the modeling of agent behavior. We further discuss how economic networks and social systems can be modeled and we discuss novel methodology and data sources. Lastly, we present an overview of estimation techniques to calibrate and validate agent-based models and show avenues for future research
The Mediterranean Island Wetlands (MedIsWet) inventory: strengths and shortfalls of the currently available floristic data
MedIsWet (Conservation of the island wetlands of the Mediterranean Basin) is a MAVA funded
project which aims at investigating all seasonal or permanent island wetlands both natural and
artificial, with a minimum extent of 0.1 hectares. More than 16,000 wetlands from almost all
the Mediterranean, including islands from France, Italy, Malta, Croatia, Cyprus, Tunisia,
Turkey, Greece and Spain were mapped. Over 2,500 of them were inventoried in the field and
more than 500 scientific contributions catalogued. In total, more than 35,000 plant occurrences
were uploaded, in a standardised and comparable way, on the national open-source web portals.
These can be related to the recorded threats, uses and other spatially retrievable information.
Here, we show strengths and shortfalls of the already available information about the floristic
records. Although further improvements are needed, we discuss how these data can be used for
research and policy actions and to develop conservation projects
Notulae to the Italian alien vascular flora: 16
In this contribution, new data concerning the distribution of vascular flora alien to Italy are presented. It includes new records and status changes from casual to naturalized for Italy or for Italian administrative regions. Nomenclatural and distribution updates, published elsewhere, and corrections are provided as supplementary material
Notulae to the Italian native vascular flora: 14
In this contribution, new data concerning the distribution of native vascular flora in Italy are presented. It includes new records, confirmations, and status changes to the Italian administrative regions. Nomenclatural and distribution updates, published elsewhere, and corrigenda are provided as Suppl. material
Notulae to the Italian alien vascular flora: 14
In this contribution, new data concerning the distribution of vascular flora alien to Italy are presented. It
includes new records, confirmations, and status changes for Italy or for Italian administrative regions. Nomenclatural
and distribution updates, published elsewhere, and corrections are provided as Suppl. material 1
Two New Acylated Flavanone Glycosides from the Leaves and Branches of Phyllanthus emblica
Two new acylated flavanone glycosides, (S)-eriodictyol 7-O-(6″-O-trans-p-coumaroyl)-β-D-glucopyranoside (1) and (S)-eriodictyol 7-O-(6″-O-galloyl)-β-D-glucopyranoside (2) were isolated from the leaves and branches of Phyllanthus emblica together with a new phenolic glycoside, 2-(2-methylbutyryl)phloroglucinol 1-O-(6″-O-β-D-apiofuranosyl)-β-D-glucopyranoside (3), as well as 22 known compounds. Their structures were determined by spectral and chemical methods
Nurses' perceptions of aids and obstacles to the provision of optimal end of life care in ICU
Contains fulltext :
172380.pdf (publisher's version ) (Open Access
Securing support for eye-health policy in low and middle income countries: Identifying stakeholders through a multilevel analysis
This article empirically evaluates advocacy in low- and middle-income countries as a key tool for raising policy priority and securing high-level decision maker support in eye health. We used a unique data set based on a survey conducted by World Health Organization in 2011 on eye care and prevention of blindness in 82 low- and middle-income countries. The theoretical framework derives from the idea that a plethora of stakeholders at local and global level pressure national governments, acting in economic and the political spheres. Previously, eye care has not been investigated in such a framework. We found structural differences across countries with different income levels and proposed policy recommendations to secure high-level decision makers’ support for promoting eye health. Three case studies suggest that, in order to secure more support and resources for eye health, domestic and international stakeholders must strengthen their engagement with ministries of health at political and above all economic levels.We gratefully acknowledge financial support from the Spanish Ministry
of Science and Innovation (ECO2011-23634) and from Universitat
Jaume I (P1.1B2012-27)