Program graduation, even after controlling for length of stay, may predict for improved outcomes in some substance abuse treatment settings. We investigated the role of program graduation by comparing social outcomes and inpatient utilization the years before and after treatment among graduates and dropouts of a Veterans Administration substance abuse intensive outpatient program. At enrollment...

This paper considers the problem of H∞ state feedback control for networked nonlinear systems under unreliable communication links with packet dropouts. The nonlinear plant in this paper is described by a Takagi–Sugeno (T–S) fuzzy model. The packet dropouts in both sensor-to-controller (S/C) and controller-to-actuator (C/A) channels are considered, which are modeled by Bernoulli processes. A ne...

This study examined the relationship between communication patterns and retention among families (n=18) receiving family therapy. Those that attended 12 sessions were labeled completers (n=6), 4-8 sessions were middle dropouts (n=6), and 1-3 sessions were early dropouts (n=6). Audiotape recordings of the first therapy session were transcribed. The content (positive or negative) and total percen...

We study the dynamics of a vertical-cavity surface-emitting laser operating near threshold and with isotropic optical feedback, using a model developed by San Miguel, Feng, and Moloney @Phys. Rev. A 52, 1728 ~1995!#. The model couples the polarization state of the electric field to the semiconductor medium by including the magnetic sublevels of the conduction and valence bands in the quantum we...

We investigate a networked control architecture for LTI plant models with a scalar input. Communication from controller to actuator is over an unreliable network which introduces packet dropouts. To achieve robustness against dropouts, we adopt a packetized predictive control paradigm wherein each control packet transmitted contains tentative future plant input values. The novelty of our approa...

In longitudinal clinical trials, missing data are mostly related to dropouts. Some dropouts appear completely at random. The source for other dropouts is withdrawal from trials due to lack of efficacy. For the latter case, the analyses of the actual observed data and completers can produce bias. One of the approaches to comply with the intent-to-treat principle is the imputation of incomplete d...

The prevalence of dropouts in educational institutions especially secondary schools affected the integrity system. It is important to note that, every country invest its youths because they are country’s future human resources, among them will emerge leaders politics, academics, technology, and business various dimension. This paper attempted identify factors that influence school dropout conse...