Multi-Basin Case Study of Real-Time Perforation Quality Assessment for Screen Out Mitigation and Treatment Design Optimization Using Tube Wave Measurements

This paper presents results from an application of a newly developed simulation tool for pollution based real time control (PBRTC) of urban drainage systems. The Oslo interceptor tunnel is used as a case study. The paper focuses on the reduction of total phosphorus Ptot and ammonia-nitrogen NH4-N overflow loads into the receiving waters by means of optimized operation of the tunnel system. With PBRTC the total reduction of the Ptot load is 48% and of the NH4-N load 51%. Compared to the volume based RTC scenario the reductions are 11% and 15%, respectively. These further reductions could be achieved with a relatively simple extension of the operation strategy.

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The Effects of an Aided Augmentative System on Communication and Speech in a Preschool Child with Developmental Delay: A Case Study

Australasian Journal of Special Education ◽

10.1017/s1030011200024490 ◽

1999 ◽

Vol 23 (1) ◽

pp. 25-46

Author(s):

Mark Carter

Keyword(s):

Preschool Children ◽

Developmental Delay ◽

Communication System ◽

Lower Proportion ◽

Graphic Symbol ◽

Symbol Use ◽

Alternating Treatment Design ◽

Treatment Design ◽

Sustained Increase

The effect of an aided graphic augmentative communication system on communication and speech in a 4‐year 7‐month‐old child with developmental delay was evaluated in this case study. An alternating treatment design was used across 2 mealtime settings (morning tea and lunch) over a 6‐week period with counterbalancing of aided and unaided conditions. Once graphic symbol use emerged, there were slightly higher levels of unprompted communication and requests in the aided condition and a lower proportion of acts contained nonsymbolic communication. There was also a higher number of different words + symbols used in the aided condition. The introduction of the graphic symbols did not appear to have detrimental effects on speech but there was no evidence of sustained increase in frequency of speech or spoken vocabulary in the aided condition. Substantial increases were noted in the number of unprompted communicative turns and range of total vocabulary over the course of the study in both conditions. The need for further research on the effects of AAC on speech and communication in preschool children is highlighted.

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Hybrid Seven-bar Press Mechanism

Tehnički glasnik ◽

10.31803/tg-20180203202102 ◽

2018 ◽

Vol 12 (3) ◽

pp. 181-187

Author(s):

M. Erkan Kütük ◽

L. Canan Dülger

Keyword(s):

Genetic Algorithm ◽

Objective Function ◽

Design Optimization ◽

Hybrid System ◽

Degrees Of Freedom ◽

Dimensional Synthesis ◽

Design Variables ◽

Optimization Study ◽

Metal Stamping

An optimization study with kinetostatic analysis is performed on hybrid seven-bar press mechanism. This study is based on previous studies performed on planar hybrid seven-bar linkage. Dimensional synthesis is performed, and optimum link lengths for the mechanism are found. Optimization study is performed by using genetic algorithm (GA). Genetic Algorithm Toolbox is used with Optimization Toolbox in MATLAB®. The design variables and the constraints are used during design optimization. The objective function is determined and eight precision points are used. A seven-bar linkage system with two degrees of freedom is chosen as an example. Metal stamping operation with a dwell is taken as the case study. Having completed optimization, the kinetostatic analysis is performed. All forces on the links and the crank torques are calculated on the hybrid system with the optimized link lengths

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