Towards a Quantitative Performance Measurement Model in a Buyer-Supplier Relationship Context

Berrah, Lamia; Clivillé, Vincent

doi:10.5772/5334

Cited by 5 publications

(2 citation statements)

References 31 publications

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“…The WHO limits for copper and zinc are 1.0 ppm and 3.0 ppm respectively [13]. However, copper toxicity in surface water is greatly reduced when it is bound to particulate matter and also when water is hard [21]. On the other hand, chromium and cadmium concentrations were 0.2660 to 0.4276 ppm and 0.0684 to 0.0513 ppm respectively [12].…”

Section: Comparison Of Heavy Metals With Who Limitsmentioning

confidence: 99%

Determination of Heavy Metals in Waters of Lower River Kuywa

Muchanga¹,

Salim

2019

IJBcRR

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Heavy metals are required by the biological organisms as nutrients but their availability above certain limits leads to adverse conditions such as bone, nerve and internal body organs damage like liver, high blood pressure, acute poisoning and death in animals and human beings and reduction of photosynthesis production, inhibition of seed germination and decreased crop yield in plants. River Kuywa being in a rich inorganic farming of sugarcane and maize area as well as industrial and urban environment, it is exposed to pollution. The objective was to determine the levels of heavy metal concentration using an Atomic absorption spectrometer and the effects of physicochemical parameters to the metal ions concentration which could arise from pollution. Temperature, pH, electrical conductivity and total dissolved solids were found to be (22.9, 23.3 C̊), (7.19, 4.34), (312.43, 318.45 µS) and (201, 204 mg/L) for upstream and downstream side of pollutants entry point respectively. Chromium, Copper and Zinc ions had relatively high concentrations compared to Cadmium ions. Lead ions were below the detection limit. Chromium, Copper and Zinc had (0.2660 ppm, 0.4276 ppm), (0.1306 ppm, 0.085 ppm) and (0.1369 ppm, 0.1395 ppm) while Cadmium had (0.0684 ppm, 0.0513 ppm) for upstream and downstream respectively. All physicochemical parameters were within WHO limits except pH. Chromium and Cadmium concentrations were above WHO limits while Copper and Zinc were below. Chromium had elevated concentration compared to other metals. There should be continuous and close monitoring of Chromium levels by reducing the factors leading to high rate of rock weathering and leaching. The water having Chromium and Cadmium concentrations above recommended limits, it should be treated first for Quality Assurance before it is consumed. Agencies like NEMA and WARMA should increase water quality surveillance operations for surface water.

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Section: Comparison Of Heavy Metals With Who Limitsmentioning

confidence: 99%

Determination of Heavy Metals in Waters of Lower River Kuywa

Muchanga¹,

Salim

2019

IJBcRR

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“…Nudurupati et al (2011) give a recent survey of PMS developments in relation to management information systems and change management. From a global point of view, PMS can be treated as a multi-criteria instrument, which consists of a set of performance expressions (also called metrics) that are consistently organized according to the objectives of the company (Berrah and Cliville 2008). In doing so, the metrics can be based on actual measurements as well as on the other types of effects evaluations.…”

Section: Production Performance Measure-mentmentioning

confidence: 99%

Predictive monitoring of production line efficiency

Mušič

Hauptman

Rogelj

et al. 2014

IJSCOM

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The paper deals with analysis of production line performance efficiency and builds a prediction model that enables a short-term prediction of the expected performance based on the scheduled product mix. The actual schedule can be used as the model input to assist the production operators at the on-line production management. The same model can be used to experimentally evaluate the effect of different scheduling strategies by linking the performance model to discrete event simulator.

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