Search results for "COPI"
showing 10 items of 2618 documents
Traffic simulation models calibration using speed–density relationship: An automated procedure based on genetic algorithm
2016
Calibration of traffic models.Calibration as optimization problem.Use of genetic algorithm. This paper presents the first results of a research which applied a genetic algorithm to calibrate a microscopic traffic simulation model based on speed-density relationships. A large set of traffic data collected from the A22 Freeway, Italy, was used and a comparison was performed between the field measurements and the simulation outputs obtained for a test freeway segment by using the Aimsun microscopic simulator.The calibration was formulated as an optimization problem to be solved based on a genetic algorithm; the objective function was defined in order to minimize the differences between the sim…
Synthesis, characterization and thermal degradation of 8-hydroxyquinoline–guanidine–formaldehyde terpolymer
2007
Abstract Terpolymer (8-HQGF) has been synthesized using the monomers 8-hydroxyquinoline, guanidine, formaldehyde in 1:1:2 molar proportions. The structure of 8-HQGF terpolymer has been elucidated on the basis of elemental analysis and various physicochemical techniques, i.e. UV–Visible, FTIR–ATR and 1 H NMR spectroscopy. Detailed thermal degradation study of the new terpolymer has been carried out to ascertain its thermal stability. Thermal degradation curve is discussed which shows two decomposition steps (265–475 °C and 540–715 °C). Sharp–Wentworth and Freeman–Carroll methods have been used to calculate activation energies and thermal stability. The activation energy ( E a ) calculated by…
ChemInform Abstract: Selecting Speed-Dependent Pathways for a Programmable Nanoscale Texture by Wet Interfaces
2013
The realization of well-defined and ordered structures on the nanoscale is a main issue in nanoscience and nanotechnology, biotechnology and other related fields like plastic or organic electronics. Among the bottom-up approaches, to date, self-assembly (equilibrium aggregates) received a major attention. In spite of this, far from equilibrium conditions allow for the generation of a wider landscape of organized systems depending on the set of control parameters employed. Under an adaptation vision of the structures, here we report some case studies showing how it is possible to programme and control the nanoscale features of ordered super- or supra-aggregates at wet interfaces by modulatin…
Selecting speed-dependent pathways for a programmable nanoscale texture by wet interfaces
2012
The realization of well-defined and ordered structures on the nanoscale is a main issue in nanoscience and nanotechnology, biotechnology and other related fields like plastic or organic electronics. Among the bottom-up approaches, to date, self-assembly (equilibrium aggregates) received a major attention. In spite of this, far from equilibrium conditions allow for the generation of a wider landscape of organized systems depending on the set of control parameters employed. Under an adaptation vision of the structures, here we report some case studies showing how it is possible to programme and control the nanoscale features of ordered super- or supra-aggregates at wet interfaces by modulatin…
Collective stress and coping in the context of organizational culture
2000
We examined from a cultural perspective how well-being was collectively defined, what were the sources of collective stress, and what kind of collective coping mechanisms were used to alleviate such stress in three divisions of a multinational company. In the first phase of the study we collected data on organizational culture by using individual thematic interviews ( N = 63). Applying the grounded theory methodology and an inductive analysis, specific cultures describing the divisions were identified. In terms of co-operation we found the following fundamental cultural recipes: joint focused efforts on money-making, despite the awareness of the common goals employees interested only in ful…
Three-Way Interactions Among Interruptions/Multitasking Demands, Occupational Age, and Alertness: A Diary Study
2015
In this study, we examined the within-person relationships between workday “cognitive” stressors (multitasking demands and workflow interruptions) and strain (situational well-being throughout the day and irritation in the evening). We hypothesized that occupational age, in terms of job tenure and an indicator of functional age (alertness), would moderate these relationships in that employees with low experience and low alertness would suffer most from the stressors. We conducted a 5-day diary study in a sample of 123 nurses, with 4 measurements per day (3 taken during the work shift and 1 taken in the evening), and 1 survey (occupational age) and computer-based cognitive performance test b…
Coping with Burnout Symptoms through Task Significance in Professionals Working with Individuals with Intellectual Disability
2021
ABSTRACT This study examined an intervention that links task significance (one’s job has a positive impact on other people) to burnout symptoms of professionals working in organizations for individuals with intellectual disability. Professionals assigned to the experimental condition participated in teams designed to enhance the positive impact of their work on others (task significance). To do so, teams focused on a task to improve the quality of life of individuals with intellectual disability. Professionals assigned to the control condition did not participate in these teams, and they continued with their usual work. All the participating professionals answered a questionnaire abou…
The buffering effect of coping strategies in the relationship between job insecurity and employee well-being
2012
The modern labour market features job insecurity (JI) as an unavoidable stressor. This study considers the influence of personal coping strategies by combining the conservation of resources with spillover theory. Do coping strategies buffer the negative effects of JI on well-being (work engagement, marital satisfaction and emotional energy at work and home)? A cybernetic coping scale distinguishes five coping strategies and a survey of 2764 Finnish employees reveals that changing the situation and symptom reduction buffer the negative effect of JI on emotional energy at work and home, respectively. Devaluation and accommodation have buffering tendencies in relation to work engagement and m…
The role of experience in work and learning among design engineers
2004
Taking an approach to learning in the workplace as a phenomenon situated and accumulated in the course of work activities and everyday practice, the purpose of this study was to investigate how workers (development engineers and designers) themselves perceive the role of experience in work and learning. The empirical material consists of interviews with 18 employees in two enterprises in Finland. Narrative analysis of the holistic core stories yielded four thematic categories. The categories indicate that learning from experience plays an essential part in coping and learning along with other people, in understanding holistic work processes and in creating a personal perception of one’s wor…
Media coverage about organisations in critical situations – Analysing the impact on employees.
2013
Purpose– This research aims to investigate how critical media coverage of an organisation affects its employees. The authors expect the effects to be similar to the way media coverage about an individual would affect this person, termed “reciprocal effects”.Design/methodology/approach– Drawing on a framework for the analysis of reciprocal effects of mass media by Kepplinger and qualitative interviews among employees of 14 different organisations undergoing a crisis, the authors develop an employee-model of reciprocal effects for the context of organisational crises.Findings– This qualitative research shows that employees are affected by media coverage on a critical issue about their employe…