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"Randomized experiments are increasingly used in development economics, with researchers now facing the question of not just whether to randomize, but how to do so. Pure random assignment guarantees that the treatment and control groups will have identical characteristics on average, but in any particular random allocation, the two groups will differ along some dimensions. Methods used to pursue greater balance include stratification, pair-wise matching, and re-randomization. This paper presents new evidence on the randomization methods used in existing randomized experiments, and carries out simulations in order to provide guidance for researchers. Three main results emerge. First, many researchers are not controlling for the method of randomization in their analysis. The authors show this leads to tests with incorrect size, and can result in lower power than if a pure random draw was used. Second, they find that in samples of 300 or more, the different randomization methods perform similarly in terms of achieving balance on many future outcomes of interest. However, for very persistent outcome variables and in smaller sample sizes, pair-wise matching and stratification perform best. Third, the analysis suggests that on balance the re-randomization methods common in practice are less desirable than other methods, such as matching. "--World Bank web site.

Experimental design.

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This report provides evidence-based guidance on cost-effective and energy-efficient cooling and ventilation interventions to improve building-level thermal comfort and indoor air quality for a changing climate in South Asia. It focuses on Bangladesh, India, and Pakistan but also covers all the countries in the region, including Afghanistan, Bhutan, Maldives, Nepal, and Sri Lanka. After an introduction, the report analyzes local climates and air quality issues, building types, and occupant behavior, as well as available passive and active interventions and their relevance in the region, before concluding with a set of recommendations for all building types. The report also identifies additional recommendations specific to residential and commercial buildings, along with policy and country-specific recommendations.

Product design.

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Given its importance in analysing and influencing the world around us, an understanding of colour is a vital tool in any design process. Colour design provides a comprehensive review of the issues surrounding the use of colour, from the fundamental principles of what colour is to its important applications across a vast range of industries.Part one covers the main principles and theories of colour, focusing on the human visual system and the psychology of colour perception. Part two goes on to review colour measurement and description, including consideration of international standards

Color in design.

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New in Paperback Whether a company has been in business for one year or for 100 years, redesigns are an inevitable, expensive part -- with vast ramifications -- of doing business.

Branding (Marketing) --- Packaging --- Design.

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Designing business cards is one of the most common design jobs The Best of Business Card Design series features an innovative collection of the most current and best work by top designers worldwide.

Business cards --- Design.