The Development of General Managers: Some New Zealand Evidence
The transition of functional specialists into general managers is recognised as a priority area for management education. This article is concerned with those factors and events which general managers themselves regard as having been the main influences on their careers. It addresses the following questions: what skills do general managers acquire as they develop, how are these acquired and how important is management education in this process? The findings should be of interest to aspiring general managers and those charged with identifying and grooming these managers.
DEVELOPING A LAY MODEL OF MANAGERIAL EFFECTIVENESS: A SOCIAL CONSTRUCTIONIST PERSPECTIVE
This study uses repertory grid interviews and a follow-up questionnaire study to develop a ‘lay’ theory of managerial effectiveness in a large New Zealand public sector organization. the lay theory is presented as a model with seventeen scales and two factors descriptive of effective and ineffective managers in the organization. the two factors indicate that effective and ineffective managers in the department are differentiated in terms of their conceptual, and interpersonal abilities. the effectiveness model shows strong similarity to models of effective management which have emerged in research outside New Zealand. This similarity is of particular interest given the context-specific nature of the study. the paper outlines the method used in the study, describes the key findings and discusses their implications for our understanding of managerial effectiveness.
l-Phenylalanine dehydrogenase from Brevibacterium sp. for production of l-phenylalanine by reductive amination of phenylpyruvate
SummaryFor production of l-phenylalanine the reductive amination of phenylpyruvate, catalyzed by phenylalanine-dehydrogenase was examined. To reach high levels and a sufficient stability of the inducible intracellular enzyme, growth conditions of Brevibacterium sp. are optimized. For continuous production of l-phenylalanine in an enzyme membrane reactor, the kinetic parameters of the partially purified enzyme are determined.In continuous production a space time yield of 37.4 g l-Phe l-1 d-1 can be reached.By means of the measured kinetic parameters and simultaneous calculation of the mass balances of all reaction components the behaviour of the reactor can be simulated. For certain conditions the multi-enzyme-system shows multiple steady-states.