The use of discounted least squares in technological forecasting

The use of growth curves in technological forecasting usually employs an equal weighting of all data points in the time series. This paper considers the benefits of weighting recent information more heavily through the utilization of discounted least squares. The method is used to model the growth of the percentage of households with CATV; discounting gives better results for short-term forecasting.     

Policy issues raised by direct broadcast satellites

Direct Broadcast Satellites, which transmit television programs directly to the viewer's home, present several policy issues that will have to be resolved during the next few years. Some of these issues transcend DBS, hence they must be resolved in a larger framework. Those that exist essentially within the framework of DBS include issues at the program producer's end, issues at the viewer's end, and technology issues. These latter are particularly important because inappropriate or unwise policy choices made now may nullify the benefits promised by improved technology.     

The future of economics: A Delphi Study

In an attempt to forecast the shape of economics in the year 2001, a Delphi study was undertaken, involving over 200 professional economists from 18 different countries. The end result was a list of 28 breakthroughs thought likely to occur in the next 20 years. The paper describes each breakthrough in detail, the process by which consensus and dissent were communicated, and the method used to select the panel of experts surveyed. Although the overall outcome of the study can be interpreted from several perspectives, one inescapable impression that emerges is that the liberal tradition in economics is latent but not dead, or equivalently, that the present conservative drift in the discipline is likely to be shortlived.     

Technological substitution in the United States pulp and paper industry: The sulfate pulping process

This paper presents an econometric analysis of the diffusion of the sulfate pulping process throughout the U.S. pulp and paper industry. A dynamic equilibrium, Gompertz diffusion function is employed to derive a multivariate estimation model which incorporates more information than the traditional approach of estimating the growth rate function alone. The empirical results suggest that the econometric approach provides a useful integration of the technological diffusion process and the comparative static theory of demand. The sulfate pulping process is projected to continue capturing market share at a relatively rapid rate, and could account for 90% or more of total U.S. woodpulp production by the year 2000.     

Change mechanisms in the diffusion of residential energy conservation practices: an empirical study

Four types of variables that affect the diffusion of home energy conservation measures are assessed. These variables are the information possessed by households, household attitudes, the economic and demographic characteristics of households, and the attributes of conservation measures. A causal model of behavior change is presented based on Fishbein's theory of reasoned action. The model is tested using panel data on 225 homeowners from Decatur, Illinois and two conservation practices: employing winter night-time thermostat setbacks and adding attic insulation. The results illustrate the importance of all four change mechanisms. Many nonadopters have erroneous information about the financial and other benefits of the two practices. The elderly and the poor are particularly ill-informed. Negative attitudes are closely related to discomfort (for night-time setback) and expense (for attic insulation). As expected, barriers and incentives differ across population subgroups and innovations.     

The relationship between regression and weighted averages in forecasting

The known relationship between linear regression and weighted averages are examined more extensively in the case of forecasting by univariate regression. Several surprising results accrue from the analysis, including the fact that it is possible for a given observation to have no bearing whatsoever on the forecast.     

Electric vehicles: Market penetration and positive externalities

In this paper, we develop a methodology for approximating the market penetration potential for electric vehicles (EVs). The model is dynamic in nature and explicitly accounts for the competitive effects of conventional vehicles. Unlike many previous models, it does not require an estimation of the time required to achieve a 50% market share. Instead, the model allows one to endogenously determine the rate of market penetration, as well as the ceiling level. We note that some electric vehicle characteristics limit marketability to consumers unaffected by the disadvantages associated with operating EVs. These characteristics are accounted for in the model by the use of a substitution index. The addition of the substitution index allows one to explicitly account for variations in prices, climate, and geographic contour, all of which affect market potential. Electric vehicles are expected to result in positive social benefits by way of reduced pollution emissions and because of the concomitant decrease in the consumption of gasoline that market adoption would bring about. However, the social benefits will not be captured in the market and will not, therefore, encourage the use of these alternatives to conventional vehicles. This means that the rate of adoption of electric vehicles will be slower than is socially optimal, which is a potential argument for government subsidies for electric vehicles. In this paper, we explore a method for analyzing the benefits associated with the adoption of electric vehicles.     

Consequences of increasing scarcity on affluent countries

A theory of continuous structural changes in countries and a theory of discontinuous structural changes are used to predict the consequences of increasing scarcity on countries with some affluence. The prognosis is disheartening. According to the theory of continuous change, increasing scarcity will directly or indirectly increase the inequality, centralization, disintegration, disturbances, repression, and both national and international conflict and will directly or indirectly decrease socioeconomic development, legitimacy, and democracy. These changes will be unpopular and create pressures for discontinuous change to prevent them. Furthermore, increasing scarcity will increase the desire for structural change and weaken the regime's capacity to manage the situation. Thus the pressure for structural change will be strong. Scarcity also interferes with the peaceful restructuring of democracies in their efforts to cope with the crisis. When these theories are used in predicting the future of modern countries under conditions of prolonged scarcity, they suggest that elitist democracies and elitist nondemocracies are likely to be restructured into egalitarian nondemocracies. Egalitarian democracies will survive as such if they are blessed with exceptional leadership. Otherwise they also might be restructured in the direction of egalitarian nondemocracy.     

Theory and practice of integrated impact assessment : The case of the western energy study

Four aspects of an applied technology assessment of western energy development are examined: the social and political context, the analytical approach, organization and management, and participation and utilization strategies. The value of technology assessments in addressing the uncertainties and value conflicts created by technological change depends in large part on organizational and management devices, particularly interdisciplinarity, external review, and participatory research strategies. While these approaches provide no guarantees, they help to compensate for inadequate theories and methodologies in providing integrated research findings.     

Mindshift: The mental revolution we are in

It is by now a commonplace to say that today the world is in the midst of a revolution as profound as any we have ever experienced. It is, however, much less of a commonplace to specify precisely of what this revolution consists. The contention of this article is that the revolution is more than a mere shift in our industrial or technological base. Fundamentally, it is a change in underlying mental attitudes—how we conceive of the world. It is thus a shift in our values but at the same time much more basic than this alone.This article describes the nature of the change that is occuring in mental attitudes. However, it does not do so in a traditional way. Primarily, it does it by means of a fable. The reason is that the shift we are experiencing is also in part a shift in our aesthetic vision, that is, in the styles of discourse that we use to describe reality. In short, different conceptions of the world require different stylistic forms. The full nuances of a new era can not be captured by the forms of the past.     

The end of a 400-year boom

The Great Discoveries, which began with Columbus, created a frontier that both eased European population pressures and poured enormous wealth into the Metropolis (Western Europe). A feudalistic, authoritarian society gradually gave way to a more open democratic set of nations. Familiar institutions were born: representative democracy and private-enterprise capitalism. Individualism flowered. During the twentieth century, that 400-year “boom” has come to an end. Population pressures on resources are now roughly similar, or worse, than those of pre-Columbian times. Humankind thus faces a “climacteric”—a coalescence of crises. The “ecological trap”, which imprisoned humans prior to the Great Discoveries, is once more closing. The questions this developed include: 1) is another frontier of comparable significance to the Great Discoveries in the offing? and 2) do the familiar politico-economic institutions of the era of the “400-year boom” require reexamination? The answers given are: 1) science and technology provide the only hope for a new frontier; but while advancing technology has brought many material benefits, it alone cannot do the necessary job; 2) the institutions of the American constitutional order should be reexamined to determine if they are suitable for the time of troubles that lies dead ahead. Several constitutional changes are suggested, to be brought about by a constitutional convention. In sum, a new social paradigm is required.     

Forecasting the impact of new technologies on the future job market

This paper examines recent occupational projections in order to determine how new technologies will affect future job growth in the United States. The first part of the paper reviews the methodologies used to derive occupational projections, focusing on how adjustments for technological change are incorporated into the forecasts. The second part of the paper reviews the most recent projections produced by the U.S. Bureau of Labor Statistics and compares them with projections produced by other organizations. The results reveal that neither high-technology industries nor high-technology occupations will supply many new jobs over the next decade. Instead, future job growth will favor service and clerical jobs that require little or no postsecondary schooling and that pay below-average wages.     

Assessing techno-economic alternatives for rural development in Northeast Mexico

In the arid zone of Northeast Mexico are located some of the most socially deprived and economically marginal communities in the nation. This paper analyzes the current status of their social and economic organization and suggests alternative techno-economic subsistence activities that could improve productive capacity while preserving the fragile ecological balance between communities and exploitable natural resources. It shows how recent advances in computer mapping, linear programming, and techno-social modelling (SOPA technique) can assist decision makers and planners in choosing the best mix of social, economic, and technical advantages from an array of scenarios of change. A major finding is that the use of cooperatives as a managerial format is not always the best one to utilize, given the variability of community cohesiveness and varying organizational requirements of different techniques of exploiting animal and plant resources.     

A product diffusion model incorporating repeat purchases

A logistic-based model for forecasting the rate of product diffusion given aggregate time series data was constructed. The model differs from earlier models based on fitting the logistic to aggregate data in that it includes a submodel to separate replacement demand from first-time sales. We fit the theoretical model to data and show that forecasts will be significantly more accurate using this model instead of the logistic curve.     

Using dead reckoning in economic projections

Economics is an inexact science, measurement of basic data is at best approximate, and most interesting relationships change relatively rapidly in developing countries. Key variables determining economic prospects are often impossible to include into models. Models and their mathematical algorithms however are deceptively precise, which often complicates the process of constructing and using economic projection models in developing countries.This paper will examine those macro models intended for operational policy purposes and how they are used. These models try to be analytically good and have sufficient plausibility to influence policy. Thus, a great deal of judgment is required in constructing, using, and interpreting projection models in developing countries: the “dead reckoning” element.