The Consequences of Information: Institutional Implications of Technological Change,by Jannis Kallinikos. Cheltenham,UK: Edward Elgar, 2006. $35.00 paper/$95.00 cloth. ISBN 978-1-84720-500-1 paper/978-1-84542-328-5 cloth

Abstract

The U.S. Department of Agriculture has been mandated to “acquire and diffuse among the people of the United States useful information on subjects connected with agriculture in the most general and comprehensive sense of that word. …” With this authority the department has taken advantage of continuing advances of communications and computer technologies by initiating several programs related to the electronic dissemination of agricultural information. For example, the Foreign Agricultural Service has begun testing the release of agricultural trade leads through the University of Nebraska's AGNET computer‐based network. The Agricultural Marketing Service disseminates updated market data on more than 150 farm commodities over its leased wire market news network; the system has 140 terminals linked by some 14,500 miles of leased wires. Additional projects described in the article include a pilot project to deliver market news information to farmers via public television, programs testing the electronic marketing of livestock, and the electronic mail network operated by the department's Office of Governmental and Public Affairs.     

Technology,Innovation and Economic Policy edited by Peter Hall (Philip Allan,Oxford, 1986) pp viii + 248, ISBN 0-86003-062-8, 0-86003-171-3 Pbk

The introduction of new technologies is associated with a major change of employment in society, from the traditional agricultural and manufacturing sectors, to the service sector. The availability of more and better services will, according to some analysts, generate wealth that will absorb the surplus labour made available from the traditional sectors. We believe this will be at best a short-term phenomenon. In the longer term, many service sector jobs will be taken over by computer-based systems. In addition, for most people employment also provides security, a pattern for their day, social relationships, a place to belong, and the opportunity to be involved in learning. These will be difficult to achieve in the newer jobs, and much more difficult for the jobless or those in short-term employment. It is critical that the meaning of ‘work’ in society be re-examined.

Under a regime in which ‘hard’, technological systems are programmed to treat society as a collection of individuals, we see the need to develop social, political and economic decision-making tools from the ‘soft’ systems viewpoint. These are not predictable from the sum of individual properties; they are properties of the system, and of the system alone. We also discuss analogies between societies and nonequilibrium thermodynamic systems, which we believe can be helpful when looking at questions involving invention of futures.     

Some Properties of Matrices with 1, -1 and 0 Entries

A class of matrices with 1, -1 and 0 entries, called the H-matrices, is introduced and properties of such matrices are investigated. It is shown that for an H-matrix K the matrix G = KDK^T, where D is a diagonal matrix with nonnegative diagonal entries, has certain properties applicable to topological synthesis of networks. A technique for decomposing a particular symmetrical matrix G, called the Q-matrix, into KDK^T, where K is an H-matrix and D is a diagonal matrix with positive diagonal entries, is also developed.