Experimental and Quasi-Experimental Designs for Research PDF Download
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Author: Donald T. Campbell
Publisher: Ravenio Books
ISBN:
Category : Psychology
Languages : en
Pages : 172
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Book Description
We shall examine the validity of 16 experimental designs against 12 common threats to valid inference. By experiment we refer to that portion of research in which variables are manipulated and their effects upon other variables observed. It is well to distinguish the particular role of this chapter. It is not a chapter on experimental design in the Fisher (1925, 1935) tradition, in which an experimenter having complete mastery can schedule treatments and measurements for optimal statistical efficiency, with complexity of design emerging only from that goal of efficiency. Insofar as the designs discussed in the present chapter become complex, it is because of the intransigency of the environment: because, that is, of the experimenter’s lack of complete control.
Author: Donald T. Campbell
Publisher: Ravenio Books
ISBN:
Category : Psychology
Languages : en
Pages : 172
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Book Description
We shall examine the validity of 16 experimental designs against 12 common threats to valid inference. By experiment we refer to that portion of research in which variables are manipulated and their effects upon other variables observed. It is well to distinguish the particular role of this chapter. It is not a chapter on experimental design in the Fisher (1925, 1935) tradition, in which an experimenter having complete mastery can schedule treatments and measurements for optimal statistical efficiency, with complexity of design emerging only from that goal of efficiency. Insofar as the designs discussed in the present chapter become complex, it is because of the intransigency of the environment: because, that is, of the experimenter’s lack of complete control.
Author: John Moubray
Publisher: Industrial Press Inc.
ISBN: 9780831131463
Category : Business & Economics
Languages : en
Pages : 452
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Book Description
Completely reorganised and comprehensively rewritten for its second edition, this guide to reliability-centred maintenance develops techniques which are practised by over 250 affiliated organisations worldwide.
Author: Gabriela Dotro
Publisher: IWA Publishing
ISBN: 9781789062519
Category : Science
Languages : es
Pages : 176
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Book Description
Humedales para tratamiento es el séptimo volumen de la serie “Tratamiento biológico de aguas residuales” (en inglés “Biological Waste Water Treatment Series”), que provee una presentación de vanguardia sobre la ciencia y tecnología del tratamiento de aguas residuales. Los principales tipos de sistemas de humedales son tratados en este volumen, a saber: (i) Humedales de flujo subsuperficial horizontal, (ii) Humedales de flujo vertical; (iii) Humedales de flujo vertical tipo francés; (iv) Humedales intensificados; (v) Humedales de flujo libre; (vi) otras aplicaciones de los humedales para tratamiento. El libro presenta en forma clara y didáctica, los conceptos básicos, los principios de la tecnología, desempeños esperados, criterios de diseño, ejemplos de diseño, aspectos constructivos y guías para la operación. El libro ha sido escrito en su versión inglesa, y traducido al castellano, por un equipo internacional de expertos en el campo de los humedales para tratamiento.
Author: Sina Ebnesajjad
Publisher: William Andrew
ISBN: 0323356028
Category : Technology & Engineering
Languages : en
Pages : 437
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Book Description
Covering a wide range of industrial applications across sectors including medical applications, automotive/aerospace, packaging, electronics, and consumer goods, this book provides a complete guide to the selection of adhesives, methods of use, industrial applications, and the fundamentals of adhesion. Dr Ebnesajjad examines the selection of adhesives and adhesion methods and challenges for all major groups of substrate including plastics (thermosets and thermoplastics), elastomers, metals, ceramics and composite materials. His practical guidance covers joint design and durability, application methods, test methods and troubleshooting techniques. The science and technology of adhesion, and the principles of adhesive bonding are explained in a way that enhances the reader's understanding of the fundamentals that underpin the successful use and design of adhesives. The third edition has been updated throughout to include recent developments in the industry, with new sections covering technological advances such as nanotechnology, micro adhesion systems, and the replacement of toxic chromate technology. Provides practitioners of adhesion technology with a complete guide to bonding materials successfully Covers the whole range of commonly used substrates including plastics, metals, elastomers and ceramics, explaining basic principles and describing common materials and application techniques Introduces the range of commercially available adhesives and the selection process alongside the science and technology of adhesion
Author: Bryan G. Crowther
Publisher: iSmithers Rapra Publishing
ISBN: 9781859573945
Category : Technology & Engineering
Languages : en
Pages : 404
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Book Description
Annotation. Many books and papers have been published on adhesion of materials in general but the topics covered by this book have been selected to cover a wide range of interests, both in terms of products and applications. Although there is some discussion of relevant theory in various sections of d104, the emphasis in this volume has been to concentrate on the practicalities of bonding of rubbers, to themselves and substrates. It is considered that this type of information is of immediate interest to the practising technologist dealing with shop floor problems on a daily basis.
Author: Daphne J. Osborne
Publisher: Cambridge University Press
ISBN: 9781139443067
Category : Science
Languages : en
Pages : 276
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Book Description
Meristematic cells in plants become the many different types of cells found in a mature plant. This is achieved by a selective response to chemical signals both from neighbouring cells and distant tissues. It is these responses that shape the plant, its time of flowering, the sex of its flowers, its length of survival or progress to senescence and death. How do plants achieve this? This treatise addresses this question using well-chosen examples to illustrate the concept of target cells. The authors discuss how each cell has the ability to discriminate between different chemical signals, determining which it will respond to and which it will ignore. The regulation of gene expression through signal perception and signal transduction is at the core of this selectivity and the Target Cell concept. This volume will serve as a valuable reference for all researchers working in the field of plant developmental biology.
Author: Tapan Kumar Basu
Publisher: Wallingford [England] : CABI Pub.
ISBN:
Category : Medical
Languages : en
Pages : 490
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Book Description
Antioxidants and their mechanisms of action; Food factors as antioxidants; Coronary heart disease; Malignant disease; Other diseases; Indicators of oxidative stress; Consumer issues.
Author: Piet Lens
Publisher: IWA Publishing
ISBN: 1843391007
Category : Science
Languages : en
Pages : 545
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Book Description
Soil and Sediment Remediation discusses in detail a whole set of remediative technologies currently available to minimise their impact. Technologies for the treatment of soils and sediments in-situ (landfarming, bioscreens, bioventing, nutrient injection, phytoremediation) and ex-situ (landfarming, bio-heap treatment, soil suspension reactor) will be discussed. The microbiological, process technological and socio-economical aspects of these technologies will be addressed. Special attention will be given to novel biotechnological processes that utilise sulfur cycle conversions, e.g. sulfur and heavy metal removal from soils. Also the potential of phytoremediation will be highlighted. In addition, treatment schemes for the clean-up of polluted megasites, e.g. harbours and Manufactured Gaswork Plants (MGP), will be elaborated. The aim of Soil and Sediment Remediation is to introduce the reader in: the biogeochemical characteristics of soil and sediments- new techniques to study soil/sediment processes (molecular probes, microelectrodes, NMR) clean up technologies for soils polluted with organic (PAH, NAPL, solvents) or inorganic (heavy metals) pollutants- preventative and remediative strategies and technologies available in environmental engineering novel process applications and bioreactor designs for bioremediation the impact of soil pollution on society and its economic importance.
Author: Giovanni Dugo
Publisher: CRC Press
ISBN: 020321661X
Category : Science
Languages : la
Pages : 657
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Book Description
The world production of citrus fruit has risen enormously, leaping from forty-five million tons a year to eighty-five million in the last 30 years. Today, the potential applications of their essential oils are growing wider, with nearly 40% of fresh produce processed for industrial purposes. Citrus: The Genus Citrus offers comprehensive cove
Author: Great Britain
Publisher:
ISBN: 9780111531877
Category :
Languages : en
Pages : 72
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Book Description
Enabling power: Welfare Reform Act 2007, ss. 2 (1) (a) (c) (4) (a) (c), 3 (1) (c) (2) (b) (d) (3), 8 (1) to (3) (4) (a) (b) (5) (6), 9 (1) to (3) (4) (a) (b), 11A (5), 11B (2) (3), 11D (2) (d), 11E (1), 11H (5) (6), 11J (3) (4) (8), 17 (1) (2) (3) (a) (b), 18 (1) (2) (4), 20 (2) to (7), 24 (1) (2) (b) (3), 25 (2) to (5), sch. 1, paras 1 (3) (4), 3 (2), 4 (1) (a) (c) (3) (4), sch. 2, paras 1 to 4A, 5, 6, 9, 10 & Social Security Administration Act 1992, ss. 5 (1A), 189 (4) to (6), 191 & Social Security Act 1998, s. 21 (1) (a) & Welfare Reform Act 2012, sch. 5, paras 2 (3), 3. Issued: 10.12.2012. Made: -. Laid: -. Coming into force: 29.04.2013. Effect: None. Territorial extent & classification: E/W/S. For approval by resolution of each House of Parliament
