2,417 research outputs found
High performance management practices in owner-managed SMEs
Objectives: While there is extensive management and academic literature on the topic area of high performance management practices (HPPs) internationally, research on HPPs in the Australian context is limited. Furthermore, research on HPPs has focused predominantly on large organisations and is largely a new direction for research in SMEs. This study attempts to fill some of the gaps in existing studies by considering a wide range of HPPs in Australian SMEs, with particular focus on owner managed SMEs. The objective of this paper is to examine the extent and nature of HPPs in owner managed Australian SMEs and the impact of certain organisational characteristics on these practices.
The research questions under examination include: What is the prevalence of HPPs in owner managed Australian SMEs?; and what is the impact of firm size, the presence of a HR manager, and the existence of a strategic plan on HPPs in SMEs?
Prior work: Undertaking this research is justified on the basis of: there is a gap in the theory relating to HPPs in SMEs and in particular owner managed SMEs, owing to the fact that most studies on HPPs are based in large organisations; globalisation and the pace of economic change are forces that are driving the need for greater understanding of HPPs (Burke 2002); and there are high expectations for growth and performance of SMEs in the economic growth and development plans for the Asia Pacific and Australian region (Asia Pacific Economic Cooperation 2002).
Approach: A survey questionnaire was sent out to 4000 Australian small and medium-sized enterprises (35% response rate). A Dun and Bradstreet database was used and a stratified sample employed. A chi-square analysis was employed to determine whether there were significant differences in relation to high performance practices in small vs. medium organisations, SMEs with and without a HR manager; and organisations with and without a strategic plan.
Results: The results of this study indicate that the overall picture regarding the incidence of high performance practices in Australian owner managed SMEs looks quite bleak. Significant positive relationships were found between demographic variables and HPPs in SMEs.
Implications: Large firm solutions may not be appropriate. A more balanced approach to prescribing and researching management solutions in SMEs is needed; an approach with a greater emphasis on the SME sector.
Value: This paper will provide an improved understanding of HPPs in Australian SMEs which will help the sector to better meet performance expectations
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Active power control response from large offshore wind farms
This thesis was submitted for the degree of Doctor of Engineering and awarded by Brunel University LondonThe GB power system will see huge growth in transmission connected wind farms over the next decade, driven by European clean energy targets. The majority of the UK’s wind development is likely to be offshore and many of these wind farms will be interfaced to the grid through power converters. This will lead to a loss of intrinsic inertia and an increasing challenge for the system operator to keep grid frequency stable. Given this
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Pigeon breeder's disease: the clinical spectrum and humoral response; an investigation of the nature and extent of extrinsic allergic alveolitis due to pigeon-derived antigens among pigeon fanciers continuing to pursue the pastime, with particular reference to early clinical and humoral-mediated responses following exposure
This thesis examines the relationships between the clinical
manifestations of Pigeon Breeder's Disease among active pigeon
fanciers, and the associated humoral responses to pigeon -derived
antigens. Clinical data was obtained in questionnaire format
from a large scale field study interviewing 100 pigeon fanciers.
A wide range of skin tests were performed and serum antibodies
were estimated by sensitive and quantitative radioimmunoassay
techniques. Selected pigeon fanciers also underwent detailed
pulmonary physiological assessments including monitoring of lung
function after antigen challenge. In particular, immediate
components of the condition both clinical and immunological have
been investigated.Simple criteria have been formulated to categorise pigeon
related clinical responses and a wider spectrum of Pigeon
Breeder's Disease was identified. Modifications to the current
classification are suggested to encompass -1) acute progressive disease - the typical acute hospital
referred case2) acute recurrent disease - recurrent,febrile, alveolitis
episodes but without short or medium term clinical deterioration.
Affected persons continue active participation in the hobby and
therefore this is probably more common than acute progressive
disease with a prevalence of approximately 10% in the present
studies. Self regulation of exposure is an important aspect.3) Immediate Response - consisting of 3 or more immediate
symptoms; commonly recorded among pigeon fanciers, often with
delayed symptoms forming an indistinct group that did not
represent a specific clinical or immunological entity
4) chronic PBD - evidence was found suggesting that chronic
respiratory symptoms are an important part of the clinical
spectrum occurring in up to 20% of non -smokers.The pulmonary function data supported these clinical
distinctions and lung permeability studies showed disturbed
physiological integrity even where routine pulmonary function
parameters were normal. This technique merits further
investigation as a potentially sensitive indicator of
physiological abnormality in extrinsic allergic alveolitis.Relationships between avian- specific IgG, exposure factors
and clinical response have been extended. There was a progressive tendency towards an altered immune reactivity
(immunisation) as certain parameters of exposure increased,but
this did not correlate with a major likelihood for finding
extrinsic allergic alveolitis. High antibody responders are a group determined by host immunological responsiveness. An
intense IgG response correlated with the presence of Pigeon
Breeder's Disease independently of exposure,and those having
>60ug /ml serum IgG to pigeon globulin evident within 10 years of
pigeon keeping were particularly likely to report acute Pigeon
Breeder's Disease.The skin test data indicate that the humoral immune response
routinely includes reaginic activity which relates to IgG
antibody rather than IgE and such responses were associated with
the presence of extrinsic allergic alveolitis independently of
the late,6 hour,intradermal response.These studies redefine the clinical spectrum of Pigeon
Breeder's Disease and establish that there is a dynamic
interaction between exposure and symptoms constituting a self - regulation of the condition particularly relevant in those
persons with acute recurrent disease. A close relationship
between avian-specific IgG and Pigeon Breeder's Disease has been
reaffirmed and shown to relate primarily to factors other than
intensity of exposure,and to have a functional capability
including reaginic activity. The findings favour an active role
for antibody in the immunopathogenesis of Pigeons Breeder's
Disease and it is postulated that avian- specific reaginic
activity within the pulmonary compartment may initiate or enhance
other immune events leading in susceptible persons to the disease
entity of extrinsic allergic alveolitis
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