Urban traffic networks are inherently unstable when congested. This instability causes a natural tendency towards spatially inhomogeneous vehicle distributions and less consistent and reproducible relationships between urban traffic variables. It is important to find ways to mitigate this unstable behavior since well-defined relationships between average network flow and density—the MFD—are use...

A nurse residency program's best practice recommendations are presented within this article and are organized around three processes: establishing the program infrastructure, creating a multistaged evidence-based program, and sustaining the program through appropriate evaluation and dissemination of results. These recommendations represent lessons learned and key findings derived from a team of...

It is a great pleasure for me to attend the Fourth Annual Forum on City Informatization in the Asian-Pacific Region while having this opportunity to exchange views with the distinguished guests. IT Promotes Development, the theme of the annual forum which fully reveals the significance of sustainable development of informatization and its role in the development. This is a theme which attracts ...

Data from the urban renewal experience in Syracuse, New York are used to examine the impact of race on patterns of intra-urban migration. The results show that, overall, the migration patterns exhibited an exponential decay in frequency with increasing distance. Both blacks and whites display this pattern, but blacks tend to cluster more closely around the point of origin. Indirect evidence is ...

The present study investigated associations between maternal relationship instability patterns and children's behavioral and emotional functioning in middle childhood in a representative sample of low-income urban families (N = 891). Data from the Three-City Study tracked maternal partnerships through the child's life, assessing total marital and cohabiting relationship transitions and delineat...

chlorotica Aporrectodea rosea X-ray tomography Burrow networks Microcosms Earthworms are considered as key actors of soil processes at different spatial and temporal scales and provide essential ecosystem services linked to climate regulation or primary production. However, little is known about their basic functional roles (e.g. organic matter decomposition, soil structuring processes) in pert...

Microbial ecosystems are often assumed to be relatively stable over short periods of time, but this assumption is seldom tested. An urban stream influenced by both flow and varying levels of anthropogenic influences is expected to have high temporal variability in microbial composition, and short-term ecological instability. Thus, we analyzed the bacterioplankton composition of a weir-fragmente...

In this paper we present a model of competition between operators on urban local bus routes in which passengers always board the first bus to arrive, and it is costly to revise timetables. The model predictds that timetables are unstable, the operator whose bus was boarded by fewest passengers is the most likely to change its arrival time, and to try to leapfrog its rival by arriving just befor...

Urban transportation is a complex phenomenon. Since many agents are constantly interacting in parallel, it is difficult to predict the future state of a transportation system. Because of this, optimization techniques tend to give obsolete solutions, as the problem changes before it can be optimized. An alternative lies in seeking adaptive solutions. This adaptation can be achieved with self-org...