This paper will propose the state feedback control based networked control system (NCS) design with the differential evolution algorithm. For designing a networked control system, one has to overcome the problems about the random latency and the data packet dropouts. Here, we will apply the state feedback control theory to design a controller to overcome the random latency and the data packet d...

This paper addresses the iterative learning control problem under random data dropout environments. The recent progress on iterative learning control in the presence of data dropouts is first reviewed from 3 aspects, namely, data dropout model, data dropout position, and convergence meaning. A general framework is then proposed for the convergence analysis of all 3 kinds of data dropout models,...

This review synthesizes drug abuse outcome studies that included a family-couples therapy treatment condition. The meta-analytic evidence, across 1,571 cases involving an estimated 3,500 patients and family members, favors family therapy over (a) individual counseling or therapy, (b) peer group therapy, and (c) family psychoeducation. Family therapy is as effective for adults as for adolescents...

Our analysis of migration differs from previous research in three important aspects. First, we exploit the confidential geocoding in the NLSY79 to obtain a distance-based measure. Second, we let the effect of migration on wage growth differ by schooling level. Third, we use propensity score matching to address selection issues. An economic model helps us determine the variables included in the ...

In a recent paper we have shown how wave variables can be used to interconnect passive plants with passive controllers such that the system remains l-stable in spite of time varying delays and data dropouts. The present paper further enhances these results by providing a detailed model which captures time varying delays, data dropouts and network capacity for wireless ring token networks. It al...

Wide-angle sonar mapping of the environ­ ment by mobile robot is nontrivial due to sev­ eral sources of uncertainty: dropouts due to "specular" reflections, obstacle location un­ certainty due to the wide beam, and distance measurement error. Earlier papers address the latter problems, but dropouts remain a problem in many environments. We present an approach that lifts the overoptimistic in­ d...

We study a predictive control formulation for uncertain discrete-time non-linear uniformly continuous plant models where controller output data is transmitted over an unreliable communication channel. The channel introduces Markovian data-loss and does not provide acknowledgments of receipt. To achieve robustness with respect to dropouts, at every sampling instant the controller transmits packe...

Sixty dropouts from hypertensive clinics were interviewed in depth to determine reasons for noncompliance. Waiting time and a poor doctor-patient relationship were the major reasons given. The average waiting time prior to examination by the doctor was 2.5 hours, and the average waiting time at the pharmacy was 1.8 hours. In contrast the average time spent with the doctor was 7.5 min. The poor ...

One of the indicators of potential problems in the higher education system may be a large number of student dropouts in the junior years. An analysis of the existing transaction data provides the information on students that will allow the definition of the key processes that have to be adapted in order to enhance the efficiency of studying. To understand better the problem of dropouts, the dat...

This article brings a new perspective to the analysis of the wage effects of the Mariel boatlift crisis, in which an estimated 125,000 Cuban refugees migrated to Florida between April and October, 1980. The author revisits the question of wage impacts from such a supply shock, drawing on the cumulative insights of research on the economic impact of immigration. That literature shows that the wa...