In the late 1970s, a new approach to the management of operations was developed by Goldratt. Now known as the theory of constraints (TOC), it provides a coherent management theory for running an organisation. It has two major components: a philosophy which underpins the working principle of on-going improvement and a generic approach for investigating, analyzing, and creating solutions to probl...

The aim of this paper is to develop and demonstrate a theory of constraints (TOC) model that utilizes TOPSIS method in estimating the priority of each product in a multiproduct constraint resource environment. The decision model compares four alternatives: Standard cost accounting, Standard Theory-OfConstraints (TOC), LP analysis and our own solution. The numerical results show that the propose...

Streptococcus pneumoniae infections are an important cause of morbidity and mortality in older patients. Uncontrolled neutrophil-driven pulmonary inflammation exacerbates this disease. To test whether the α-tocopherol (α-Toc) form of vitamin E, a regulator of immunity, can modulate neutrophil responses as a preventive strategy to mitigate the age-associated decline in resistance to S. pneumonia...

The objective of this study was to explore the extent of mineralization of Biodigester Effluent (BDE) by Electrochemical Treatment using aluminum electrodes in monopolar configuration. The benefit of determining a COD/TOC ratio is becoming evident. While both parameters are useful independently, the ratio of the two values, and the fluctuation of this ratio, is an excellent indicator of the org...

The treatment of paper mill effluent for COD, TOC, total phenols and color removal was investigated using combined activated sludge-ozonation processes and single processes. The combined activated sludge-O3/pH 10 treatment was able to remove around 80% of COD, TOC and color from Kraft E(1) effluent. For the total phenols, the efficiency removal was around 70%. The ozonation post treatment carri...

Sediments and rocks recovered in CRP-2/2A coring operations contain relatively little organic matter (average TOC=0.28%) and very small amounts of solvent-soluble organic matter. Because Early Oligocene sediment included significant amounts of coal detritus, TOC values are higher in Early Oligocene rocks than in younger rocks. TOC values are highest in the fine-grained rocks deposited as part o...

Hytteborn, J. 2014. Water Quality in Swedish Lakes and Watercourses. Modeling the IntraAnnual Variability. Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology 1194. 39 pp. Uppsala: Acta Universitatis Upsaliensis. ISBN 978-91-554-9078-2. Water quality is of great importance for ecosystems and society. This thesis characterized and modeled the varia...

Advanced oxidation processes (AOPs) for water and wastewater treatment are often handicapped by their inability to completely eliminate total organic carbon (TOC). In order to explore the capability of the combination of ultrasonic irradiation with ozone for the rapid removal of TOC, we examined the degradation rates of dissolved phenol (C6H5OH) in water with high-frequency ultrasound over the ...

One of the key problems in time optimal control (TOC) is the inherent computational complexity, which restricts its application to low dimensional systems. Considering a constrained linear system with bounded disturbances, this paper proposes a novel approach to reduce the computational complexity of TOC, where the terminal controller is nonlinear. It comprises several predetermined local linea...