Search results for "Time"

Ristiriitoja ja reflektiota : opettajien näkemyksiä vuorovaikutuksessa tapahtuvasta arvioinnista

2021

Tässä tutkimuksessa tarkastellaan opettajien näkemyksiä siitä, millaisia haasteita on luokkahuoneen vuorovaikutustilanteissa tapahtuvassa formatiivisessa arvioinnissa. Aineisto koostuu viiden opettajan keskusteluista täydennyskoulutuksessa. Keskustelujen teemoina olivat opettajien omien videonäytteiden ja kirjallisen materiaalin pohjalta opettajan sensitiivisyys, palaute ja dialogisuus. Vaikka keskustelun perussävy koulutuksen aikana oli myönteinen ja aineena oli oman työn kehittäminen, esiin nousi huomattava määrä oppimista edistävän luokkahuonevuorovaikutuksen ja arvioinnin haasteita. Laadullinen aineistolähtöinen sisällönanalyysi kohdistui näihin haasteisiin sekä opettajien esittämiin ra…

Real-time optimal control of water distribution systems - Models and techniques, including intermittent supply conditions.

2014

Alternative analysis of transient infiltration experiment to estimate soil water repellency

2019

The repellency index (RI) defined as the adjusted ratio between soil‐ethanol, Se, and soil‐water, Sw, sorptivities estimated from minidisk infiltrometer experiments has been used instead of the widely used water drop penetration time and molarity of ethanol drop tests to assess soil water repellency. However, sorptivity calculated by the usual early‐time infiltration equation may be overestimated as the effects of gravity and lateral capillary are neglected. With the aim to establish the best applicative procedure to assess RI, different approaches to estimate Se and Sw were compared that make use of both the early‐time infiltration equation (namely, the 1 min, S1, and the short‐time linear…

The fast maritime transport for the waterfront revitalization of the airports in Western Sicily.

2011

In this paper we propose a new mobility model that uses sea transports for systematic and occasional users, tourists, etc.., which must reach the airports of Palermo and Trapani. In particular fast ferries, even with their operational limitations, can be used for quick links designed for the mobility demand that interests the airports of Western Sicily. These transport nodes are currently isolated because they are accessible essentially by means of rubber, given the supply shortages of the rail system. The aim of this study is to reassess the waterfront of a stretch of coast between the two Sicilian airports, places near the sea, that can use sea transport systems to reduce congestion on th…

Kinetics of phase separation in thin films: Lattice versus continuum models for solid binary mixtures

2008

A description of phase separation kinetics for solid binary (A,B) mixtures in thin film geometry based on the Kawasaki spin-exchange kinetic Ising model is presented in a discrete lattice molecular field formulation. It is shown that the model describes the interplay of wetting layer formation and lateral phase separation, which leads to a characteristic domain size $\ell(t)$ in the directions parallel to the confining walls that grows according to the Lifshitz-Slyozov $t^{1/3}$ law with time $t$ after the quench. Near the critical point of the model, the description is shown to be equivalent to the standard treatments based on Ginzburg-Landau models. Unlike the latter, the present treatmen…

Univariate and multivariate properties of wind velocity time series

2009

We analyze the time series of hourly average wind speeds measured at 29 different stations located in Sicily, a region with a complex morphology. The investigation, performed from the univariate as well as the multivariate point of view, evidences that the statistical properties of wind at the single sites have features that are not reproduced by standard models and, thus, require specific modeling. Moreover, the synchronous evolution of wind velocity presents a cluster structure, obtained with different algorithms, that persists in the standard deviation too.

Underwater Multirobot Cooperative Intervention MAC Protocol

2020

This work introduces a Medium Access Control (MAC) protocol designed to allow a group of underwater robots that share a wireless communication channel to effectively communicate with each other. The goal of the Underwater Multirobot Cooperative Intervention MAC (UMCI-MAC) protocol presented in this work is to minimize the end to end delay and the jitter. The access to the medium in UMCI-MAC follows a Time Division Multiple Access (TDMA) strategy which is arbitrated by a master, which also has the capability to prioritize the transmission of some nodes over the rest of the network. Two experiments have been carried out with a team of four Autonomous Underwater Vehicles (AUV) in order to comp…

The Effect of Emotional Dissonance and Mental Load on Need for Recovery and Work Engagement among Italian Fixed-Term Researchers

2020

Although many studies have been conducted to evaluate the risk and protective factors on psychological health among academic staff, little attention has been paid to fixed-term researchers, the weakest figures in the academic context. By using the Job Demands&ndash

Working-Time Regimes and Work-Life Balance in Europe

2015

The organization of times and places of work are key elements of working conditions, and define employees’ possibilities for balancing work and other life spheres. This study analyses several aspects of temporal and spatial flexibility, and their associations with employees’ work-life balance. This study separates four dimensions of temporal flexibility and one indicator of spatial flexibility. The dimensions of temporal flexibility are the number of hours worked, when the hours are worked, work-time intensity, and the degree of working-time autonomy. The workplace flexibility indicator is an index of work locations. Work-life balance is analysed with work-hour fit. The analyses were based …

Work Schedules and Work–Family Conflict Among Dual Earners in Finland, the Netherlands, and the United Kingdom

2016

Many European families are affected by the 24/7 economy, but relatively little is known about how working parents experience nonstandard hours. The aim of this study was to analyze the possible associations of dual earners’ work schedules and other work-related factors with their experience of time- and strain-based work–family conflict. These phenomena were examined among dual earners living in Finland, the Netherlands, and the United Kingdom, countries that differ in working time practices and policies. Multigroup structural equation modeling was used to analyze cross-cultural data on dual earners with children aged 0 to 12 years ( N = 1,000). The results showed that working nonstandard …