Search results for "Safety"

SAFETY PROBLEMS AND GLOBAL COMFORT IN RAILWAYS OPERATIONAL MANAGMENT

2008

In the planning process of a railway intervention and in its operational management, it needs to analyse carefully the relations between the different classes of variables constituting the complex system “vehicle-infrastructure-environment” to find the most suitable actions in optimisation the travelling comfort and safety, with respect for the ecosystem compatibilities. The problem can be tackled, in a systematic way, according to set theory and vector analysis, in a hyperspace Âd of d-dimension up to determining a characteristic global comfort vector that can be combined with each alternatives of intervention in the transport network examined. From this point of view, after the proper ach…

Connecting Disasters and Climate Change to the Humanitarian-Development-Peace Nexus

2022

As climate change increasingly affects the world, much is said about the rising amounts of aid required to support emergency response, long-term development to adapt, and peacebuilding to ensure that conflict does not undermine these efforts. Bringing these ideas together, some advocate for the addition of a separate climate change stream into the humanitarian, development, and peace/peacebuilding nexus (or triple nexus). Based on a critical literature review and synthesis, this article articulates and conceptualizes how climate change perspectives and actions should be integrated into the existing streams of the humanitarian, development, and peace/peacebuilding nexus, rather than being ad…

Language-Integrated Privacy-Aware Distributed Queries

2019

Distributed query processing is an effective means for processing large amounts of data. To abstract from the technicalities of distributed systems, algorithms for operator placement automatically distribute sequential data queries over the available processing units. However, current algorithms for operator placement focus on performance and ignore privacy concerns that arise when handling sensitive data. We present a new methodology for privacy-aware operator placement that both prevents leakage of sensitive information and improves performance. Crucially, our approach is based on an information-flow type system for data queries to reason about the sensitivity of query subcomputations. Ou…

Exploratory analysis of safety data and their interrelation with flight trajectories and network metrics

2013

This paper presents an exploratory analysis of the correlation between different network metrics and safety events. The objective is to develop analysis methods and indicators that relate the network structure with safety events. In particular by using data gathered with an automatic tool developed by EUROCONTROL and a database of traffic data, we measured the correlations between the classical metrics of the airspace network, especially the network of navigation points, and the occurrence of Short Term Conflicts Alerts (STCA). The results obtained are not univocal; correlation between STCA occurrences and classical network metrics are present but the correlation coefficient is around 0.7. …

The Safety Culture Enactment Questionnaire (SCEQ): Theoretical model and empirical validation

2015

This paper presents the Safety Culture Enactment Questionnaire (SCEQ), designed to assess the degree to which safety is an enacted value in the day-to-day running of nuclear power plants (NPPs). The SCEQ is based on a theoretical safety culture model that is manifested in three fundamental components of the functioning and operation of any organization: strategic decisions, human resources practices, and daily activities and behaviors. The extent to which the importance of safety is enacted in each of these three components provides information about the pervasiveness of the safety culture in the NPP. To validate the SCEQ and the model on which it is based, two separate studies were carried…

[Analysis of patient safety culture in an out of hours primary care service.]

2020

Background: Aim of this study, part of a European collaborative research project, was to evaluate the "patient safety culture" (PSC) in a primary care out of hours service in order to provide the management with a baseline for improvement interventions. Methods: Cross sectional study with the administration of the Safety Attitude Questionnaire Ambulatory Version (SAQ-AV) administered to all the 56 doctors working out of hours in the ULSS 20 Verona Local Health Trust in April/May 2015. For each item of the questionnaire the average score, standard deviation, non-applicability, percentage of agreement, percentage of disagreement were calculated. Results: Doctors working out of hours appreciat…

Predicting the equilibrium bed slope in natural streams using a stochastic model for incipient sediment motion

2011

In this paper, a method to predict the equilibrium bed slope in natural streams based on the incipient motion criterion is proposed. The method is based on the criterion suggested by Gessler to simulate the grain size distribution of the armour coat using the concept of critical shear stress of a sediment mixture. In particular, a different expression of the probability for a single particle size to be part of the armour coat is firstly proposed; then, a simple two-steps criterion is suggested to estimate the safety factor required by the proposed approach. The method is applied in three different Italian regions (Calabria, Basilicata, and Tuscany) and required several field campaigns invol…

Layer thickness optimisation in a laminated composite

1997

Abstract The paper describes a method to optimise the thickness balance within a composite laminate with layers oriented according to a limited set of angles. The laminate must be symmetric, balanced and loaded in-plane. The optimisation process is particularly suited to be used in conjunction with a finite element program. It provides the designer with the optimal overall engineering characteristics anda list of all the possible orientation combinations ranked with respect to their safety factor. The optimisation method is based on the first order gradient optimum search method and operates iteratively in the engineering elastic characteristics field. The cost function implemented up to no…

"Tulolähteen tulee pulputa kirkkaana" : tehdasyhteisö Walkiakosken tehtaan johdon patriarkaalinen suhde työläisiin Rudolf Waldenin aikakaudella 1924-…

2003

Pedestrian Safety Indicators Study

2008

Pedestrian mobility can be considered an important feature in a new model of town organization, being suitable for the newly urbanized areas as well as the old quarters and the outskirts, places where streets and squares, once devised for a pedestrian based mobility, were eventually overcame by an ever increasing motorized traffic. Enhancing pedestrian mobility could bring new life and activities into the old and historic parts of the town reviving their original identities. The last decade’s increase in the recourse to private cars requires improvements in pedestrian mobility quality. This can be achieved by building new infrastructures, limiting the use of private cars, improving public t…