We examined the spatial distribution, occurrence, and socioecological predictors of woody invasive plants (WIP) in two subtropical, coastal urban ecosystems: San Juan, Puerto Rico and Miami-Dade, United States. These two cities have similar climates and ecosystems typical of subtropical regions but differ in socioeconomics, topography, and urbanization processes. Using permanent plot data, avai...

AIM The aim of the study was to evaluate the effect of cooling the soft tissue of injection sites on the pain perceptions of pediatric patients during the administration of local anesthesia for routine dental procedures. METHODS AND MATERIALS A total of 160 children aged 5-6 years were included in the present study. On a random basis, the subjects were allocated to the without ice pretreatmen...

Abstract A robotic system constructed as a wheeled inverted pendulum (WIP) serves an impressive demonstrator, since this kind of is inherently nonlinear, unstable, and nonminimum phase. These properties may pose several difficulties, when it comes to control trajectory planning. This paper shows method for deriving highly dynamic compliant with the dynamics by means solving optimal problem (OCP...

One of the manufacturing challenges in semiconductor wafer fabrication is the single machine unscheduled breakdown, which subsequently creates bottleneck. With WIP buildup due to unavailable machine, it would be a difficult task to decide on how to dispatch the WIP once the machine is available. Many methods and strategies have been presented by previous researchers, however these strategies ha...

Abstract Owing to the deposition mechanism, parts fabricated from material extrusion (ME) process have intrinsic air gaps that negatively impact their mechanical properties. Thus, amount of should be minimized. In this study, a warm isostatic press (WIP) was adopted decrease gaps, resulting in improved properties using acrylonitrile butadiene styrene (ABS). To identify changes properties, tensi...

In numerous wafer fabrication facilities (wafer fabs) the load changes dynamically. Current load release control schemes are usually developed and tested in a constant load environment. In this paper, we discuss four CONWIP-like lot release policies and assess their ability to buffer variability generated by the load changes and to keep the lot release variability as low as possible. All contro...

Most simulation textbooks assume that a model can be started in an empty state and the final output will not be affected, so long as the “warm-up period” is excluded from the analysis. In this paper we test this assumption, using a discrete-event model of a existing manufacturing facility. Using a series of model runs with no initial Work in Progress (WIP) and another series of simulation runs ...

A novel combination of ideas from cognitive linguistics and spatial occupancy models in robotics has led to the WIP (Words Into Pictures) system. WIP automatically generates depictions of natural language descriptions of indoor scenes. A qualitative layer in the conceptual representation of objects underlies a mechanism by which alternative depictions arise for qualitatively distinct interpreta...

The kanban control systems are common in many manufacturing systems and are considered as superior to the push type systems. One characteristic of pull production systems is that there is a fixed population in the system so that they can be modeled as closed queueing networks. Also, pull production systems can be modeled with fork/join synchronization stations where supplies and demands are mat...