Dealing with the issue of implicit learning in dynamic system control, more particularly with the so called Sugar Factory task, we developed (Fum & Stocco, 2003; in press) a model that explains the performance improvement normally shown by participants by relying exclusively on the ACT-R subsymbolic procedural learning mechanism. Our model contrasts sharply with more popular accounts of the phe...

As a result of deterioration in the colour and polarisation of the VHP sugar caused by abnormal cane quality during October of the 1983/84 crushing season, it was decided to test a modified boiling system at Illovo as proposed by van Hengel at the SASTA Congress of 1983. The results achieved for the period before, during and after the trial are presented and compared. It was found that the qual...

Various aspects affecting the steam economy of a raw sugar mill are discussed. Process and prime mover steam requirements are evaluated for a new 600 ton canelhour factory currently under construction at Felixton, and options for achieving a level of steam economy where fibre can be supplied to a downstream paper mill with the appropriate fuel economy are evaluated. The necessity to allow for f...

The paper describes ten of the more significant process innovations implemented over this 35 year period, including mud recycling, evaporator modifications, an entrainment separation device, development of a continuous pan and controls, low grade crystalliser drives and continuous centrifugals for magma production. Although each innovation was developed initially to address a Maidstone factory ...

This paper presents a novel modelling approach for hybrid industrial plants. It is based on the introduction of object-oriented concepts to the Differential Predicate Transition nets. To handle the system complexity a top-down methodology is considered, where class models are successively refined and decomposed. The UML language is also used to represent different views of the modelled system. ...

The sugarcane borer, Diatraea saccharalis (F.) (Lepidoptera: Crambidae), is the key insect pest of sugarcane, Saccharum spp., grown in Louisiana. For more than 40 years, Louisiana sugarcane farmers have used a value of 10% internodes bored at harvest as the economic injury level (EIL). Three plant-cane studies were conducted to re-evaluate the long-standing sugarcane borer EIL level using the m...

in order to study the effect of genotype × environment interaction and stability of sugar beet varieties, four cultivars, including shirine, zarghan, laetitia and 7112 hybrid were planted in five major areas near to sugar beet factory of biseton as kangavar, sahneh, chamchamal, dinavar and ravansar for three years (2006-2008) using a randomized complete block designs, with three replications. a...

Background: Greenhouse gas (GHG) emissions are increasing worldwide. They have harmful effects on human health, animals, and plants and play a major role in global warming and acid rain. Methods: This research investigated carbon dioxide (CO2) and CH4 emissions obtained from different parts of the Hakim Farabi, Dobal Khazaei, and Ramin factories which produce ethanol and yeast. Seasonal rates ...

ECONOMIC MATTERS IN THE CORRESPONDENCE OF COUNT BENEDICT TYSZKIEWICZ TO FR. ANDRZEJ LUBOMIRSKI (CONTRIBUTION) Benedykt Tyszkiewicz did not live to see his biography. He was one of the most influential Polish industrialists in Russian partition Kiev governorate. After studies and internships Belgium France, he returned hometown Andruszówka started modernizing family estate. managed modernize sug...