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

世界経済・社会統計 = World development indicators

1. Introduction and Overview. 2. Detecting Influential Observations and Outliers. 3. Detecting and Assessing Collinearity. 4. Applications and Remedies. 5. Research Issues and Directions for Extensions. Bibliography. Author Index. Subject Index.

Regression Diagnostics: Identifying Influential Data and Sources of Collinearity

https://repository.upenn.edu/cgi/viewcontent.cgi?article=1099&context=mgmt_papers

The Business Model: Recent Developments and Future Research

We investigate whether income inequality affects subsequent growth in a cross-country sample for 1965-90, using the models of Barro (1997), Bleaney and Nishiyama (2002) and Sachs and Warner (1997), with negative results. We then investigate the evolution of income inequality over the same period and its correlation with growth. The dominating feature is inequality convergence across countries. This convergence has been significantly faster amongst developed countries. Growth does not appear to influence the evolution of inequality over time. Outline

https://www.econstor.eu/bitstream/10419/81822/1/02-28.pdf

Economic growth and income inequality

Stakeholder Theory: Reviewing a Theory That Moves Us

This article outlines the evolution of additive manufacturing technology, culminating in 3D printing and presents a vision of how this evolution is affecting existing global value chains (GVCs) in production. In particular, we bring up questions about how this new technology can affect the geographic span and density of GVCs. Potentially, wider adoption of this technology has the potential to partially reverse the trend towards global specialization of production systems into elements that may be geographically dispersed and closer to the end users (localization). This leaves the question of whether in some industries diffusion of 3D printing technologies may change the role of multinational enterprises as coordinators of GVCs by inducing the engagement of a wider variety of firms, even households.

/pdf/global-value-chains-from-a-3d-printing-perspective-1nwt09svl5.pdf

Global value chains from a 3D printing perspective

Additive manufacturing with 3-D printers may be a key technology enabler for entrepreneurs seeking to use disruptive innovations such as business models utilizing distributed manufacturing. Unlike centralized manufacturing, distributed manufacturing makes the parts and products (the prints) at (or closer to) the source of the demand, cutting out much of the traditional supply chain. Although many expect 3-D printing to take off at the household level and previous work has shown significant returns for those choosing to do so, there are still significant barriers to entry for typical consumers. Our analysis demonstrates that for an individual to make an abnormally high return on their investments in 3-D printers, they must serve others to achieve high utilization rates. The impetus to do so is created by a service that can undercut traditionally manufactured products due to affordability and customizability. Low-cost, open-source 3-D printers are now priced within range of individual entrepreneurs who can take advantage of the long tail of consumers with highly varied interests. The margin advantage, net present value, and return on investment (ROI) analysis provided herein could form the basis of thousands of new small-business ventures in the coming years.

/pdf/open-source-self-replicating-3-d-printer-factory-for-small-10a0sw109s.pdf

Open-source, self-replicating 3-D printer factory for small-business manufacturing

Based on a multilevel analysis of nearly 120,000 observations across 31 countries between 2001 and 2008, we provide novel insights into the moderating effects that economic inequality may have on the distinct roles that human and financial capital play on different types of entrepreneurship. As inequality increases, both forms of capital become weaker deterrents of entry into necessity entrepreneurship, whereas for opportunity entrepreneurship, only financial capital becomes a stronger predictor of entry. We also show that, regardless of inequality levels, both human and financial capital exhibit decreasing marginal returns on the likelihood of entry into necessity entrepreneurship, and that in the case of opportunity entrepreneurship, financial capital exhibits increasing marginal returns. However, inequality does impact the magnitude of marginal returns. Additionally, our statistical analysis provides quantitative support to extant literature arguing that higher levels of economic inequality foster both types of entrepreneurship albeit having a stronger impact on necessity entrepreneurship, and that human and financial capital have distinct effects on entry into necessity versus opportunity entrepreneurship. All these findings have pertinent policy implications and shed light on the under-researched role of inequality on entrepreneurship.

André O. Laplume

Papers

Stakeholder Theory: Reviewing a Theory That Moves Us

Global value chains from a 3D printing perspective

Open-source, self-replicating 3-D printer factory for small-business manufacturing

What motivates entrepreneurial entry under economic inequality? The role of human and financial capital

Influence of intellectual property, foreign investment, and technological adoption on technology entrepreneurship ☆