A membraneless bioelectrochemical system - rotatable bio-electrochemical contactor (RBEC) consists of an array of rotatable electrode disks was developed to convert the chemical energy from wastewater organics (acetate) directly into electricity. Each rotatable electrode disk had an upper-air exposing and a lower-water submerging halves. Intermittent rotation (180°) enabled each halve to altern...

This study focused on the advanced oxidation of the hetero bi-functional reactive dye Sumifix Supra Yellow 3RF (CI Reactive Yellow 145) using dark Fenton and photo-Fenton conditions in a lab-scale experiment. A 2(3) factorial design was used to evaluate the effects of the three key factors: temperature, Fe(II) and H2O2 concentrations, for a dye concentration of 250 mg L(-1) with chemical oxygen...

This paper is concerned with the case of an exogenous system in which a model is required to forecast a periodic output time series using a causal input. A novel approach is developed in which the wavelet packet transform is taken of both the dependent time series and causal input. This results in two sets of basis dictionaries and requires two bases to be chosen. It is proposed that the best b...

Nowadays, the increase of human population every year results in increasing of water usage and demand. Saen Saep canal is important canal in Bangkok. The main objective of this study is using Artificial Neural Network (ANN) model to estimate the Chemical Oxygen Demand (COD) on data from 11 sampling sites. The data is obtained from the Department of Drainage and Sewerage, Bangkok Metropolitan Ad...

To maintain an internally consistent representation with actual traffic conditions, this paper presents an OD demand consistency checking and updating model for on-line dynamic traffic assignment operation. Both predictive and reactive approaches are proposed to minimize (1) the deviations between simulated states and real-world observations and (2) OD demand adjustment magnitude. The two objec...

Water quality indices (WQIs), which translate numerical values of several water quality characteristics of a sample into a single value, play a very important role in the monitoring, comparison and control of water quality. The WQIs of modern and post-modern times have been almost exclusively based on physical and chemical characteristics, and have seldom included 'biological' characteristics o...

Use of disappearance data as proxies for actual consumption causes inconsistent estimates of own-price retail demand elasticities. A system of equations describing consumer, processor, and producer behavior is used to consistently estimate the retail demand elasticity for beef using available data while avoiding the restrictive assumption of fixed input proportions implicit in disappearance dat...

In this paper we describe an investigation into the prediction of emergency bed demand bed demand due to non-scheduled admissions within a NHS hospital in South London, U.K. A hybrid methodology, incorporating a neural network and an ARIMA model was used to predict a time series of bed demand. A thorough statistical analysis of the data set was performed as a preliminary phase of the research f...

This paper analyses how international outsourcing has affected the relative demand for low skilled workers in Germany during the 1990s. In contrast to previous empirical work, the single elements of the input-output-matrix are used to disentangle international outsourcing and trade in final goods more accurately. The main finding is that during the 1990s international outsourcing had a signific...