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Enabling continuous improvement: a case study of implementation (2004)

Jager, Bertus de ; Minnie, Chris ; Jager, Johan de ; [et al.]

Bradford : Emerald

Journal of manufacturing technology management 15 (2004), S. 315-324

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ISSN: 1741-038X

Source: Emerald Fulltext Archive Database 1994-2005

Topics: Technology , Economics

Notes: Widespread recognition of the strategic imperative posed by a turbulent external environment has brought into focus a key challenge for firms - that of increasing involvement in innovation by the staff in the organisation. Much research has suggested that organisations that mobilise a large proportion of their staff to participate in innovation can make significant gains. Achieving this depends on a systematic process of organisational development in which the facilitative patterns of behavioural routines are extended and reinforced, so that they become a major culture change. This paper reports on progress with this organisational development methodology using a detailed case study of its use within a major mining company in South Africa. It makes use of a reference model framework to help structure and direct the change process towards enabling higher involvement in innovation. In particular it explores practical issues involved in moving a large organisation along a path of high involvement innovation.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1108/17410380410535017

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Effect of scale of operation on CSD dynamics in evaporative crystallizers (1991)

Jager, Johan ; Kramer, Herman J. M. ; Scarlett, Brian ; [et al.]

Hoboken, NJ : Wiley-Blackwell

AIChE Journal 37 (1991), S. 182-192

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ISSN: 0001-1541

Keywords: Chemistry ; Chemical Engineering

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology

Notes: Experimental measurements of the crystal-size distribution (CSD) clearly indicate a pronounced difference in the dynamic behavior of a 20- and 970-L continuous crystallizer that produces ammonium sulfate. The difference in their circulation time offers a probable explanation for this phenomenon. It causes different supersaturation profiles in the two crystallizers, which leads to internal fines dissolution in the large crystallizer. This contributes to the observed oscillations in the 970-L crystallizer as opposed to the first-order responses in the 20-L crystallizer. To numerically study the effect of the supersaturation profile a dynamic model, from which the MSMPR (mixed suspension mixed product removal) assumption is omitted, is developed. Calculated supersaturation profiles differ considerably for the 20-L, the 970-L and an imaginary 50,000-L continuous evaporative crystallizer. Coincident with changes in the supersaturation profiles, the numerical solution of the model indicates the tendency of large crystallizers to oscillate and supports this suggested explanation.

Additional Material: 14 Ill.