THE DESIGN AND ANALYSIS OF EXPERIMENTS. By Oscar Kempthorne. New York, John Wiley and Sons, Inc., 1952. 631 pp. $8.50. This book by a teacher of statistics (as well as a consultant for \"experimenters\") is a comprehensive study of the philosophical background for the statistical design of experiment. It is necessary to have some facility with algebraic notation and manipulation to be able to use the volume intelligently. The problems are presented from the theoretical point of view, without such practical examples as would be helpful for those not acquainted with mathematics. The mathematical justification for the techniques is given. As a somewhat advanced treatment of the design and analysis of experiments, this volume will be interesting and helpful for many who approach statistics theoretically as well as practically. With emphasis on the \"why,\" and with description given broadly, the author relates the subject matter to the general theory of statistics and to the general problem of experimental inference. MARGARET J. ROBERTSON

The Design and Analysis of Experiments

Implementation of a quality management system (QMS) according to the ISO 9000 family in a Greek small-sized winery: A case study

Purpose – The purpose of this study is to explore the main barriers of ISO 9000 implementation in local government (LG) organizations. In addition to this, this study also determines whether these barriers are different between the various types of LG organizations or otherwise.Design/methodology/approach – Based on previous studies and research, related and relevant information had been gathered in order to develop the questionnaire form used in this research to ensure adequacy and accuracy of the survey tool content. The main content of the questionnaire focuses on statements that relate to the barriers which normally occur in implementing ISO 9000. The data that was garnered from this survey was then analysed using quantitative methods in line with answering the related research questions.Findings – Descriptive statistical analysis shows that, in total, there are five main barriers and two additional barriers that have been faced by LG organizations in implementing ISO 9000. Five of these barriers are ...

Implementation barriers of ISO 9000 within the Malaysian local government

Leading international buyer-firms stipulate advanced quality management system (QMS) standards. The industry/sector-specific QMS standards have been developed beyond the ISO-9000 for certain sectors where the quality issues are critical. These standards seem to play a quality signalling function. However, the adoption of industry-specific QMS Standards has been hardly analysed at firm-level. This study explores the inter-firm variations in holding the 'automotive industry specific harmonised QMS standard' ISO/TS-16949 accredit for 466 auto component producers in India. Alternatively, we examine the holding of 'ISO/TS-16949 and/or (earlier widely accepted) QS-9000' accredit(s) in terms of the firm-specific variables. The logistic regressions indicate considerably higher probabilities for bigger and pure-technical collaboration enterprises. For holding the ISO/TS-16949 Accredit, also the foreign financial collaboration has a favourable influence on SMEs; however, overall the foreign ownership, even the majority foreign equity, has negligible impact on large firms. We suggest preparatory cum financial assistance for the ISO/TS-16949 certification.

Adoption of industry-specific quality management system standards: determinants for auto component firms in India

This paper explores the role of quality management system (QMS), such as ISO 9000, and total quality management, and their approaches in construction industry. The aim is to determine if these systems have the potential to generate new knowledge for improving quality management practices and outcomes in construction projects. This paper reviews all the prior literatures relevant to QMS in construction industry. The findings and conclusions obtained are sorted out into different categories to develop the framework of the paper. To date, very few researches have been performed on the areas, such as project management, 'hard' and 'soft' quality practice, technical and non-technical approaches, project performance, and system maintenance which come under the purview of the QMS in construction industry. The findings can help researchers doing QMS studies in construction industry to bestow new knowledge in the academia. It also provides useful implications for industry practitioners to determine their strengths and weaknesses and the area of improvement in their current system or practices.

Review of quality management system research in construction industry

The main purpose of this paper is to assess the experience of different organisations in the state of Qatar upon adopting the ISO 9000:2000 quality management standard. It is required to report the available motives, achieved benefits, difficulties encountered and success factors from adopting the standard among certified organisations, and obstacles from its adoption among non-certified organisations. The data collected for the research is from 47 certified organisations utilising a closed ended survey questionnaire. Among the most significant findings is the overall positive notion that the companies in the state of Qatar believe in the benefits and importance of adopting the ISO 9000:2000 standard. Most of these companies are convinced to adopt the standard as a result of its importance to improve process performance/product quality rather than pressure from external customers. In addition, it is proven through the context of this paper that utilising foreign consultants during the certification process to aid companies' staff help to resolve the main difficulty with the certification process that is the cultural change. Last but not the least, lack of time and lack of human resources were considered by the non-certified companies as the main obstacles for getting certified.

ISO 9000:2000 quality management standard: experience in the state of Qatar

This work presents an innovative technique to enhance the performance of the Savonius wind turbine. The new technique is based on introducing an upstream deflector and downstream baffle. The shape ...

An innovative augmentation technique of savonius wind turbine performance

Experimental and statistical study of the effect of temperature and waste ratio on the mechanical properties and cost of polystyrene polypropylene plastic blends.

The effect of oxygen on lipase production by Penicillium chrysogenum was studied under two operating modes, controlled aeration rate tested and controlled agitation at dissolved oxygen concentration (DO) 1.00 vvm. Lipase production and cell dry weight were tested in a stirred batch fermenter 5 L. Improvement in oxygen transfer rate (OTR) either by aeration or agitation resulted in an increase in lipase production. Growth curves and lipase activities of P.chrysogenum were examined at agitation rates (200,400,600 rpm), aeration rates (2,4 vvm) at different fermentation periods (24,48,72,96,120 h). Response Surface Methodology (RSM) using Design Expert software was used to study the effect of aeration, agitation, and fermentation time on lipase activity and cell dry weight. These factors were analyzed using 2 1 . 3 2 level factorial design. An optimal set of conditions that maximize lipase production: (2 vvm aeration; 600 rpm agitation after 72 h) was obtained. The maximum lipase activity obtained was 240 U/mL. Beside lipase activity, this paper also studies the optimal combination of the controllable factors (aeration; agitation and fermentation time) that will maximize the cell dry weight.

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Optimization of Extracellular Lipase Production by Penicillium chrysogenum Using Factorial Design

Emulsion polymerisation of vinyl acetate (VAc) and vinyl ester of versatic acid (VEOVA 10) was carried out using different feed composition ratios. The copolymer emulsion was characterised by measuring the morphological properties (average particle diameter, D) by using the transmission electron microscope (TEM), minimum film forming temperature (MFFT) and filtration residue (ppm). The results of the study indicate that the average particle diameter of emulsion (D) decreases with the increase of the amount of VEOVA 10 content (and subsequently decreases the amount of VAc), also the ppm and the MFFT is decreased. These results were illustrated using response surface methodology and contour plots. In this paper, the economic production of VAc and VEOVA 10 emulsion polymer was studied to ensure the best performance of all properties at minimum cost utilising multi-objective optimisation methodology.

Tamer A. Mohamed

Papers

ISO 9000:2000 quality management standard: experience in the state of Qatar

An innovative augmentation technique of savonius wind turbine performance

Experimental and statistical study of the effect of temperature and waste ratio on the mechanical properties and cost of polystyrene polypropylene plastic blends.

Optimization of Extracellular Lipase Production by Penicillium chrysogenum Using Factorial Design

Economic production of VAc and VEOVA 10 emulsion polymer using factorial design