Search results for "operative"

Traffic congestion reduction based on vehicle platoons and intelligent crossroads interactions

2021

Intersections are at the core of urban congestion. For more than a decade, new approaches based on autonomous and connected driving have been proposed. They aim to improve the performance of traffic control at intersections, by harnessing connectivity and driving automation (longitudinal control). These approaches have in common the fact that vehicles can negotiate together their right of way to use the conflicting space. However, they are different in terms of the way they share the space and optimization techniques. The challenge is to define the sequence of access of vehicles to the common space (which one goes first, which is the second, and so on) and the speed profile of vehicles to a…

THE SUCCESS FACTORS OF A SICILIAN MARKET-ORIENTED WINE COOPERATIVE

2014

Wine cooperatives have a long tradition in Sicily, as well as in Italy and in Europe. The objective of this paper is to reconstruct the general framework of the Sicilian wine cooperatives that still account for nearly 80% of the regional wine grapes production. In this context we examine the productive, organizational and commercial strategies of a case study: Cantine Settesoli. Founded in Menfi (Western Sicily, Italy) in 1958 on the initiative of a group of wine grape-growers, the Cantine Settesoli has developed over the decades and now represents the major bottled wine cooperative in Sicily, whose 2,135 members own 5% of Sicilian vineyards. With its four wine-making plants, a volume of gr…

Implementation of green harvesting in the Sicilian wine industry: Effects on the cooperative system

2015

This paper contributes to assessing the effectiveness of the GH measure to contribute in reducing the supply of wine grapes, and thus contrasting the fall of wine prices in those years when especially abundant productions are expected. By analysing the application of this measure to the Sicilian wine sector during the three-year period (2010–2012), we assess its effects on the regional wine cooperative system. The results from the analysis of the statistical data show that the GH measure was successful in terms of the number of applications, the supported area and financial expenditures, and contributed with other factors to determining a reduction in wine grape production. The empirical su…

Old wine in new wineskins? Understanding the cooperative movement: Catalonia, 1860-1939

2020

Different factors have been proposed to explain why in some regions there is a greater tendency to form cooperatives. The debate remains open. In this study, we look at the spread of cooperativism within Catalonia from 1860 to 1939. Catalonia was not just the leading industrial region in Spain but also where cooperatives first emerged and had a greater presence. In line with the existing evidence, we find that cooperativism spread from coastal municipalities to the hinterland. In particular, it seems that local conditions (literacy and social capital) facilitated this process, while accessibility to the transport network and neighbouring effects also played a significant role. This work was…

Color stability of Bulk-Fill composite restorations

2020

Made available in DSpace on 2022-04-28T19:29:50Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-11-01 Background: The color stability of the composite resin is an important property that influences its clinical longevity, which remains an inherent challenge to the material. Thus, the purpose of this study was to evaluate the color stability of bulk-fill resins when exposed to dye. Material and Methods: Cavities were prepared in 80 bovine incisors, which were randomly assigned into 4 groups (n = 20) according with the resin composite used: P60 (Control Group - Filtek P60, 3M/ESPE), FP (Filtek Bulk-Fill Posterior, 3M/ESPE), SDR (SDR, Dentsply) and FF (Filtek Bulk Fill Flow, 3M/ESPE). A…

Understanding the role of documents in a hierarchical flow of work

1997

Workplace bullying, burnout and resilience amongst perioperative nurses in Australia: A descriptive correlational study.

2021

AIM This study aimed to investigate workplace bullying and explore correlations between bullying, burnout and resilience amongst perioperative nurses in Australia. BACKGROUND Workplace bullying in perioperative nursing involves verbal, physical and psychological violence. However, no prior studies have measured Australian perioperative nurses' experiences of workplace bullying nor sought to understand if there is a relationship with burnout and resilience. METHODS A descriptive correlational study was conducted utilizing an online survey incorporating four validated instruments. Descriptive statistics and regression models analysed workplace bullying, burnout and resilience. RESULTS Over ha…

Publication Network Analysis of an Academic Family in Information Systems

2011

The study of scientific collaboration through network analysis can give interesting conclusions about the publication habits of a scientific community. Co-authorship networks represent scientific collaboration as a graph: nodes correspond to authors, edges between nodes mark joint publications (Newman 2001a,b). Scientific publishing is decentralized. Choices of co-authors and research topics are seldomly globally coordinated. Still, the structure of co-authorship networks is far from random. Co-authorship networks are governed by principles that are similar in other complex networks such as social networks (Wasserman and Faust 1994), networks of citations between scientific papers (Egghe an…

Meeting others—supporting situation awareness on the WWW

2001

Abstract World Wide Web (WWW) techniques provide a simple interface, which is accessible almost everywhere. The WWW supports document sharing and information retrieval, but has no tools for direct user interaction, simply because the mechanisms to support user awareness are missing. The aim of this paper is twofold. First, we present general concepts of situation awareness, which concerns the user interaction on the WWW platform, and a theoretical framework, which is used in examining existing awareness support systems. Second, we provide an analysis of PeopleAwarenessEngine, which supports situation awareness and enables user communication and collaboration on the WWW.

EVALUATION OF THE EFFECTS OF CONTI- NUOUS PREPERITONEAL WOUND INFILTRATION ON POSTOPERATIVE RESPIRATORY PERFORMANCE IN PATIENTS WHO UNDERWENT MAJOR A…

2013

Aim. According to the recent literature, continuous pre-perito- neal wound infiltration with local anaesthetics (CPWI) is an effective analgesic therapy in patients who undergo major abdominal surgery 1. Although it is not inferior to other com- monly used techniques in postoperative analgesia, many studies report conflictive results about its efficacy compared to them 2. The aim of our study was to evaluate the effects of CPWI on the postoperative respiratory performance in patients after major abdominal surgery. Materials and methods. From June 2011 to July 2012, a total of 14 patients have been evaluated. All patients were treated using the protocol generally used in our Department for t…