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The aim is to obtain a dense and reliable disparity map from a stereoscopic pair under any luminosity condition. From the disparity map it is possible to obtain some information about the objects appearing in the scene, such as their position and their distance to the camera.

The disparity map is obtained using a correspondence method based on a multiresolution scheme. It also uses the simulated annealing algorithm to minimize the energy function, which integrates information coming from several sources: grey levels, non‐parametric transforms, edges and geometrical constraints. The multiresolution scheme allows us to interpolate the disparity map obtained in each level and to use it as an initial estimation for the simulating annealing process in the following level.

The multiresolution scheme speeds up the convergence. The fact of adding information about the neighbourhood improves the results. A simple and suitable energy function has been proposed. A simple efficient scaling scheme has been used. Their results are as good as other costly techniques such as block‐to‐point.

The use of grey level images has the drawback that some bright areas can be confused. As a solution, some other additional features are proposed.

A new metric is proposed to evaluate the quality of a disparity map. A low‐cost energy function is proposed. It integrates several type information to add robustness to the method. The convergence of the method is dramatically speeded up reusing the results of the algorithm thanks to the multiresolution scheme.

Segmentation is an important topic in computer vision and image processing. In this paper, we sketch a scheme for a multiscale segmentation algorithm and prove its validity on some real images. We propose an approach to the model based on MRF (Markov Random Field) as a systematic way for integrating constraints for robust image segmentation. To do that, robust features and their integration in the energy function, which directs the process, have been defined. In this approach, the image is first transformed to different scales to determine which one fits better to our purposes. Then, it is segmented into a set of disjoint regions, the adjacent graph (AG) is determined and a MRF model is defined on the corresponding AG. Robust features are incorporated to the energy function by means of clique functions and optimal segmentation is then achieved by finding a labeling configuration that minimizes the energy function using Simulated Annealing.

In this work, we propose an approach to the model based on Markov random field (MRF) as a systematic way for integrating constraints for robust image segmentation. To do that, robust features and their integration in the energy function, which directs the process, have been defined. The suitability of the method has been verified by comparing classic features with the robust ones. In this approach, the image is first segmented into a set of disjoint regions and the adjacent graph (AG) has been determined. This approach is applied by defining an MRF model on the corresponding AG. Robust features are incorporated to the energy function by means of clique functions, and optimal segmentation is then achieved by finding a labelling configuration, which minimizes the energy function using the simulated annealing.

There is sufficient evidence to prove that the improved health status of a nation’s citizens results in economic growth and development via improved functionality and productivity of labor. It is also commonly accepted that healthcare expenditure significantly influences health status through, for instance, improving life expectancy at birth and reducing morbidity, death, and infant mortality rates. Within healthcare, medicines account for a considerable share of health-related expenditure in both developed and developing countries. Therefore, it seems reasonable to assume that improved access to medicines is likely to contribute not only to the well-being of families and individuals but also to the economic growth and development in all societies. It has been widely advocated that pharmaceutical multinational enterprises (MNEs) can play an important role to address this problem, as they develop and supply a significant proportion of the drugs imported by low- and middle-income countries. This chapter is dedicated to a systematic review of literature in order to identify the strategies implemented by pharmaceutical MNEs to improve access to medicines in the low- and middle-income countries. A total of 76 research articles have been identified, and we have found that the main strategies of pharmaceutical MNEs are related to improving health outcomes through R&D, establishing partnerships for product development, pricing strategies to improve access to medicines, technology transfer, licensing agreements, and nonmarket efforts to improve access to medicines, among other strategies to overcome barriers imposed by intellectual property rights. We have also found that pharmaceutical MNEs’ strategies take place within a complex system and often involve interactions with a wide range of actors, such as international organizations, governments, private not-for-profit sector, universities and research institutes, and generic manufacturers. However, there is still a need for major progress in the field of access to medicines, and pharmaceutical MNEs should be more active in this field in order to avoid potential negative consequences, such as loss of legitimacy and compulsory licensing of their patented medicines.

THERE IS a very old opening, usually to bad jokes, which goes something like: ‘What do you want first, the good news or the bad news … ?’ Sad to say, this format has appeared in the latest circular from the Local Government Staff Commissioners for England (LGSC 19/74). In many ways it is a pity it is not a joke.

The following annotated bibliography of materials on orienting users to libraries and on instructing them in the use of reference and other resources covers publications from 1981. A few items from 1980 have been included because information about them was not available in time for the 1980 listing. A few items have not been annotated because the compiler was unable to secure copies of these items.

IT is rare nowadays to discover in the annual or other reports of libraries any reference to current losses of books. There are many sides to this, as to every problem. Formerly it was held that a loss of one volume in an issue of a thousand was a reasonable loss; this our readers know. We do not recall a pronouncement based upon a count of stock and circulation recently. As our pages, and those of other library journals, have shown, the check and control of losses is a really costly business. Nevertheless, as long as we can remember, it has been impressed on librarians that we are custodians of a certain form of public property which we are expected to keep for as long in safety as that property retains its value. It can also be asserted that the discovery of whereabouts in the accounts of a bank a single shilling is missing may occupy hours of staff‐time; it is probably necessary to make it, and this was done a few years ago, and maybe is done now. To pose this problem nowadays, when there is so much else to be done, may be a little tactless. In the present conditions of public regard, or want of it, for the property of others, especially communal property, our eagerness to serve our people without let or hindrance, and the consequent removal of all barriers, wickets and entrance checks even in very busy libraries of large size—are we sure that we are absolved from all responsibility for the care of books?

The pattern of prosecutions forfood offences has changed very little in the past decade. Compositional offences have rarely exceeded 5 per cent and, since the 1967 batch of regulations for meat products, are mostly in respect of deficient meat content. Food hygiene offences have also remained steady, with no improvement to show for all the effort to change the monotony of repulsive detail. The two major causes of all legal proceedings, constituting about 90 per cent of all cases—the presence of foreign matter and sale of mouldy food—continue unchanged; and at about the same levels, viz. an average of 55 per cent of the total for foreign matter and 35 per cent for mouldy food. What is highly significant about this changed concept of food and drugs administration is that almost all prosecutions now arise from consumer complaint. The number for adulteration as revealed by official sampling and analysis and from direct inspectorial action is small in relation to the whole. A few mouldy food offences are included in prosecutions for infringements of the food hygiene regulations, but for most of the years for which statistics have been gathered by the BFJ and published annually, all prosecutions for the presence of foreign matter have come from consumer complaint. The extent to which food law administration is dependent upon this source is shown by the fact that 97 per cent of all prosecutions in 1971 for foreign bodies and mouldy food—579 and 340 respectively—resulted from complaints; and in 1972, 98 per cent of prosecutions resulted from the same source in respect of 597 for foreign matter and 341 for mouldy food. Dirty milk bottle cases in both years all arose from consumer complaint; 41 and 37 respectively.

The institution of an annual series devoted to current and ongoing research in economics and business should be considered one of the notable developments during the period under review. Long standing need for such a reference not withstanding, there has been until this year no systematic attempt to organize a continuing series which concentrated on selected areas of ongoing research, especially adapted to the Jahrbucher format. By facilitating the publication of research papers which are longer than the conventional journal‐length article yet shorter than a monograph, publishing outlets available to scholars in the field have been infinitely expanded. Two years ago, the Royal Economic Society and the Social Science Research Council of Great Britain, developed an experimental series, published by Macmillan, entitled Surveys of Applied Economics. The JAI Press, Greenwich, Conn., has now come out with an annual series, which is expected to fill the gaps in at least seventeen areas of economic theory and business. These are briefly listed below, with pertinent bibliographical citations: Research in Economic Anthropology: An Annual Compilation of Research. Series editor, George Dalton. vol. 1. Sept. 1977‐ $22.00 ISBN 0‐89232‐040‐9; Research in Economic History: An Annual Compilation of Research. Series editor, Paul Uselding. vol. 1. Sept. 1976‐ $22.50 ISBN 0‐89232‐001‐X; Research in Health Economics: An Annual Compilation of Research. Series editor, Richard M. Scheffler. vol. 1. Sept. 1977‐ $22.50 ISBN 0‐89232‐042‐7; Research in Human Capital and Development: An Annual Compilation of Research. Series editor, Ismail Sirageldin. vol. 1. June/July 1977‐ $22.50 ISBN 0‐89232‐019‐2; Research in International Business and Finance: An Annual Compilation of Research. Series editor, Robert G. Hawkins. vol. 1. May/June 1977‐ $23.50 ISBN 0‐89232‐031‐1; Research in Labor Economics: An Annual Compilation of Research. Series editor, Ronald G. Ehrenberg. vol. 1. March 1977‐ $22.50 ISBN 0‐89232‐017‐6; Research in Law and Economics: An Annual Compilation of Research. Series editor, Richard O. Zerbe. vol. 1. Sept. 1977‐ $22.50 ISBN 0‐89232‐028‐1; Research in Marketing: An Annual Compilation in Research. Series editor, Jagdish N. Sheth. vol. 1. June 1977‐ $22.50 ISBN 0‐89232‐041‐9; Research in Philosophy and Technology: An Annual Compilation of Research. Series editor, Paul T. Durbin. vol. 1. March 1977‐ $22.50 ISBN 0‐89232‐022‐2; Research in Political Economy: An Annual Compilation of Research. Series editor, Paul Zarembka. vol. 1. Sept. 1977‐ $22.50 ISBN 0‐89232‐020‐6; Research in Population Economics: An Annual Compilation of Research. Series editor, Julian L. Simon. vol. 1. April 1977‐ $22.50 ISBN 0‐89232‐018‐4; Applications of Management Science. Series editor, Matthew J. Sobel. vol. 1. 1977‐ $22.50. ISBN 0‐89232‐023‐0; Research in Econometrics. Series editor, Dennis J. Aigner. vol. 1. 1977‐ $22.50 ISBN 0‐89232‐039‐7; Research in Experimental Economics. Series editor, Vernon L. Smith. vol. 1. 1977‐ $22.50 ISBN 0‐89232‐030‐3; Research in Finance. Series editor, Haim Levy. vol. 1. 1977‐ $22.50 ISBN 0‐89232‐043‐5; Research in Organizational Behavior. Series editor, Barry Staw. vol. 1. 1977‐ $22.50 ISBN 0‐89232‐045‐1; Research in Public Policy and Management. Series editor, Colin Blaydon. vol. 1. 1977‐ $22.50 ISBN 0‐89232‐044‐3.

Britain's nine ombudsmen provide an informal and inexpensive mechanism for resolving disputes and grievances that arise between individual members of the public and organisations participating in the ombudsmen's schemes. They have been criticised, however, for being at times slow, limited, and ineffective. An ombudsman is defined as an adjudicator who is independent of the organisations he supervises and who is entitled to award compensation to complainants. In this paper, the scope of each scheme, and its strengths and weaknesses, are individually surveyed. Awareness and use of the ombudsmen among members of the public is very low, but whether they would be able to cope with an increased demand for their services without structural change is doubted.