Estimating the patent premium: Evidence from the Australian Inventor Survey

In this paper we use novel survey data on 1,790 Australian inventions to estimate the average patent premium, which provides an important benchmark for technology managers and IP professionals. Our data are drawn from the Australian Inventor Survey, which was sent to all Australian applicants who submitted a patent application to the Australian Patent Office from 1986 to 2005. Since some patent applications were unsuccessful, we have information about the private value of both patented and unpatented inventions. Our results suggest that the presence of a patent increases the returns to an invention by around 40 to 50 percent regardless of how we define ‘value.’ Copyright © 2011 John Wiley & Sons, Ltd.     

Attribution of hedge fund returns using a Kalman filter

Hedge funds offer attractive investment possibilities because they engage in investment styles and opportunity sets which – because they are different from traditional asset class funds – generate different risk exposures. Conventional wisdom holds that hedge funds add value and provide unique investment opportunities because of their ability to invest in disparate risk exposures, and via the manager’s skill in selecting stocks and timing the market. In this article, a Kalman filter is used to decompose the time series of hedge fund returns into market timing and stock selection factors to establish whether fund managers really do generate statistically significant abnormal profits. Compelling evidence supports an alternative interpretation for the market timing return constituent. This work represents the first time the Kalman filter has been used to extract a time series of the capital asset pricing model’s dynamic variables for determining return component magnitudes.     

Applying a Universal Content and Structure of Values in Construction Management

There has recently been a reappraisal of value in UK construction and calls from a wide range of influential individuals, professional institutions and government bodies for the industry to exceed stakeholders’ expectations and develop integrated teams that can deliver world class products and services. As such value is certainly topical, but the importance of values as a separate but related concept is less well understood. Most construction firms have well-defined and well-articulated values, expressed in annual reports and on websites; however, the lack of rigorous and structured approaches published within construction management research and the practical, unsupported advice on construction institution websites may indicate a shortfall in the approaches used. This article reviews and compares the content and␣structure of some of the most widely used values approaches, and discusses their application within the construction sector. One of the most advanced and empirically tested theories of human values is appraised, and subsequently adopted as a suitable approach to eliciting and defining shared organisational values. Three studies within six construction organisations demonstrate the potential application of this individually grounded approach to reveal and align the relative values priorities of individuals and organisations to understand the strength of their similarity and difference. The results of these case studies show that this new universal values structure can be used along with more qualitative elicitation techniques to understand organisational cultures.     

Optimizing tracking error-constrained portfolios

Active portfolios subject to tracking error (TE) constraints are the typical setup for active managers tasked with outperforming a benchmark. The risk and return relationship of such constrained portfolios is described by an ellipse in traditional mean-variance space and the ellipse’s flat shape suggests an additional constraint which improves the performance of the active portfolio. Although subsequent work isolated and explored different portfolios subject to these constraints, absolute portfolio risk has been consistently ignored. A different restriction – maximization of the traditional Sharpe ratio on the constant TE frontier in absolute risk/return space – is added here to the existing constraint set, and a method to generate this portfolio is explained. The resultant portfolio has a lower volatility and higher return than the benchmark, it satisfies the TE constraint and the ratio of excess absolute return to risk is maximized (i.e. maximum Sharpe ratio in absolute space).     

A new solution to the problem of adjudicating conflicting claims

Summary. For the problem of adjudicating conflicting claims, we consider the requirement that each agent should receive at least 1/n his claim truncated at the amount to divide, where n is the number of claimants (Moreno-Ternero and Villar, 2004a). We identify two families of rules satisfying this bound. We then formulate the requirement that for each problem, the awards vector should be obtainable in two equivalent ways, (i) directly or (ii) in two steps, first assigning to each claimant his lower bound and then applying the rule to the appropriately revised problem. We show that there is only one rule satisfying this requirement. We name it the “ rule”, as it is obtained by a recursion. We then undertake a systematic investigation of the properties of the rule.Received: 7 September 2004, Revised: 21 April 2005, JEL Classification Numbers: C79, D63, D74.William Thomson: Correspondence toWe thank Christopher Chambers, Youngsub Chun, Tarík Kara, Çağatay Kayí, Juan Moreno-Ternero, Toyotaka Sakai, and Michel Truchon for their comments. We also thank a referee for useful comments. This paper was presented at Columbia University, CORE, Bilkent University, Sabancí University, Université Laval, and Caltech, and at the Mallorca Review of Economic Design meeting. Thomson acknowledges support from the NSF under grant SES-0214691.     

The Costs of the CAP

What are the effects of the CAP? Professor Thompson of Aberdeen University analyses the costs of the Common Agricultural Policy.     

New development: Managing and accounting for sustainable development across generations in public services—and call for papers

Social and environmental justice across generations is a fundamental attribute of sustainable development. In this article, which is also a call for papers for a future theme in Public Money & Management (PMM), we develop our case for further research on how governments and public service organizations seek to address sustainable development in their decision-making processes. We believe that accounting for social and environmental aspects is an underdeveloped area of research and practice that is worthy of further critical enquiry. We therefore call on researchers and practitioners to submit their research to a themed issue of PMM on managing and accounting for sustainable development in public services.     

Measuring regional competitiveness in oilseeds production and processing in Nigeria: a spatial equilibrium modelling approach

The four main resource regions of Nigeria, namely, the East, Middle‐belt, West and North, differ in their endowments in the production and processing of oilseeds. The Federal Government has allocated resources to the oilseeds sub‐sector across the regions without apparent rational basis. Consequently, huge imports of oilseed products, high and unaffordable oilseed product prices, and the establishment of new oil mills in the face of frequent shutdowns and chronic under‐utilisation of existing mills, still characterise the sector. In this paper, a spatial equilibrium model of the Nigerian oilseeds economy is used to determine the optimal location and number of mills across the regions, and to establish regional competitiveness in aid of the planning and development of the oilseeds sub‐sector. In the model, production (farming and milling) activities are tied to arable land and milling capacity constraints. The shadow prices of the arable land and milling capacities are used as a measure of competitiveness. Results indicate that, because of its central location, the Middle‐belt is the most competitive in oilseeds production at a shadow value of N 18,400 per hectare of cultivated land, followed by the North, West and East regions. However, the East is the most competitive in oilseeds milling, followed by the West, due to their close proximity to ports of export. These results suggest that transport cost is the main determinant of the viability of oilseeds production and milling in Nigeria.     

Children Crying at Birthday Parties. Why?

We consider the problem of dividing a non-homogeneous one-dimensional continuum whose endpoints are topologically identified. Examples are the division of a birthday cake, the partition of a circular market, the assignment of sentry duty or medical call. We study the existence of rules satisfying requirements of efficiency, fairness (no-envy), and immunity to misrepresentation of preferences (strategy-proofness). This work, supported by NSF under grant SES. 0214691, was presented at Laval University, at the May 2004 Israeli-Turkish Conference on Economic Design at Bilgi University, at the July 2004 Meeting of the Society for Economic Design at the University of Mallorca, and at the July 2004 Seventh International Meeting of the Society for Social Choice and Welfare at Osaka University. I thank Julius Barbanel, Steven Brams, Youngsub Chun, Bettina Klaus, Toyotaka Sakai, and Chun-Hsien Yeh for their comments.