Gold and silver mining in the 16th and 17th centuries, land titles and agricultural productivity

Although agricultural productivity is critical for economic development very little is known about the causes of the large dispersion in agricultural productivity across the world. Microeconomic studies increasingly stress the lack of land rights in many poor countries as an important source of low productivity. This paper examines the role played by land titles in explaining differences in agricultural productivity for 93 countries. Using the per capita accumulated value of gold and silver production in the 16th and 17th centuries as instruments for land rights it is shown that enforcement of land titles is a significant source of agricultural productivity inequality across the world.

The comparative efficiency and productivity of labor-managed and capital-managed firms

The available empirical literature comparing the efficiency and productivity of labor-managed and capital-managed firms is reviewed and meta-analysed. The results suggest that labor-managed firms are not less efficient or less productive than capital-managed firms. Labor-managed firms have lower output-to-labor ratios and even lower capital-to-labor ratios. However, the differences in these ratios are not statistically significant. The labor-managed firm's democratic governance, industrial relations climate, and organisational setting do not appear to adversely affect productivity and efficiency. © 1997 by URPE All rights of reproduction in any form reserved.

Age and productivity of academics: A case study of a public university in Malaysia

This study examines the relationship between age and productivity measured based on key performance indicators (KPI) amongst academic staff at Universiti Sains Malaysia (USM). Three models were used in the analysis: linear, quadratic and piece-wise spline. The linear model indicates that age is negatively related to KPI. The quadratic model shows an inverted-U shaped relationship where KPI peaks at age 41 years. The piece-wise spline model indicates academic staff reach the peak of their productivity between ages 46-50 years with another productive age interval between 36-40 years implying 10 golden years when KPI could be harvested fruitfully. There is a significant downtrend in the KPI after 50 years of age. Other factors that have significant influence on KPI are gender, academic rank and discipline. The sub-models show that the influence of age on KPI is more significant amongst academic staff in the arts compared to the science stream. Age influence on KPI is significant amongst female staff but not male staff. We conclude that assessing performance in the workplace with regard to age requires complex methodological engagement and also needs to be based on a wider lens which recognises and includes within the discussion, the intangible and social dimensions of performance.

A panel CUSUM test of the null of cointegration

This paper proposes a simple residual-based panel CUSUM test of the null hypothesis of cointegration. The test has a limiting normal distribution that is free of nuisance parameters, it is robust to heteroskedasticity and it allows for mixtures of cointegrated and spurious alternatives. Our Monte Carlo results suggest that the test has small-size distortions and reasonable power. In our empirical application to international R&D spillovers, we present evidence suggesting that total factor productivity is heterogeneously cointegrated with foreign and domestic R&D capital stocks. © Blackwell Publishing Ltd, 2005.

Wal-Mart innovation and productivity: a viewpoint

Technology effects, business process development, and productivity growth are considered in the context of a single company: Wal-Mart. The starting point is the 2001 McKinsey Global Institute report, which finds that over 1995–2000, a quarter of U.S. productivity growth is attributable to the retail industry, and almost a sixth of that is attributable to Wal-Mart. Wal-Mart is interesting as well because of its rapid growth in Canada. This is now Canada’s largest private sector employer. We also consider other evidence relevant to public policy formation concerning Wal-Mart and conclude with a discussion of options for partially filling important data gaps.

How long is too long in contemporary peer review? Perspectives from authors publishing in conservation biology journals

Delays in peer reviewed publication may have consequences for both assessment of scientific prowess in academics as well as communication of important information to the knowledge receptor community. We present an analysis on the perspectives of authors publishing in conservation biology journals regarding their opinions on the importance of speed in peer-review as well as how to improve review times. Authors were invited to take part in an online questionnaire, of which the data was subjected to both qualitative (open coding, categorizing) and quantitative analyses (generalized linear models). We received 637 responses to a total of 6,547 e-mail invitations sent. Peer-review speed was generally perceived as slow, with authors experiencing a typical turnaround time of 14 weeks while their perceived optimal review time is six weeks. Male and younger respondents seem to have higher expectations of review speed than females and older respondents. Majority of participants attributed lengthy review times to the 'stress' on the peer-review system (i.e., reviewer and editor fatigue), while editor persistence and journal prestige were believed to speed up the review process. Negative consequences of lengthy review times appear to be greater for early career researchers and can also have impact on author morale (e.g. motivation or frustration). Competition among colleagues were also of concern to respondents. Incentivizing peer review was among the top suggested alterations to the system along with training graduate students in peer review, increased editorial persistence, and changes to the norms of peer-review such as opening the peer-review process to the public. It is clear that authors surveyed in this study view the peer-review system as under stress and we encourage scientists and publishers to push the envelope for new peer review models.

Energy productivity and total-factor productivity in the Australian construction industry

There is urgent need to consider energy consumption when measuring total-factor productivity in the construction industry. This paper adopts the Malmquist index method to investigate the factors affecting the energy productivity of the Australian construction industry and compares them with those decomposed from the total-factor productivity. An input-oriented distance function and a contemporaneous benchmark technology are employed to develop the data envelopment analysis models. The Malmquist productivity index is decomposed into the technological change, pure technical efficiency change and activity effect to gain comprehensive insights into changes of construction productivity in the Australian states and territories over the past two decades. Research results show that both energy productivity and total-factor productivity improved in Australia, particularly related to technological development. The pure technical efficiency and activity indices changed slightly over time or across regions. This study demonstrates that there exists a linkage between energy productivity and total-factor productivity through their technological and technical efficiency changes. The Australian construction industry could enhance these two productivities by introducing advanced technologies and implementing them efficiently.

Privacy-preserving mechanism for social network data publishing

 Privacy is receiving growing concern from various parties especially consumers due to the simplification of the collection and distribution of personal data. This research focuses on preserving privacy in social network data publishing. The study explores the data anonymization mechanism in order to improve privacy protection of social network users. We identified new type of privacy breach and has proposed an effective mechanism for privacy protection.