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- Articles and reports: 12-001-X20070019850Description:
Auxiliary information is often used to improve the precision of survey estimators of finite population means and totals through ratio or linear regression estimation techniques. Resulting estimators have good theoretical and practical properties, including invariance, calibration and design consistency. However, it is not always clear that ratio or linear models are good approximations to the true relationship between the auxiliary variables and the variable of interest in the survey, resulting in efficiency loss when the model is not appropriate. In this article, we explain how regression estimation can be extended to incorporate semiparametric regression models, in both simple and more complicated designs. While maintaining the good theoretical and practical properties of the linear models, semiparametric models are better able to capture complicated relationships between variables. This often results in substantial gains in efficiency. The applicability of the approach for complex designs using multiple types of auxiliary variables will be illustrated by estimating several acidification-related characteristics for a survey of lakes in the Northeastern US.
Release date: 2007-06-28 - Articles and reports: 16-001-M2005002Description:
This paper evaluates Canadian industry performance in adopting and developing greenhouse gas (GHG) technologies. It addresses issues concerning business investments in GHG technologies, domestic and international market access for Canadian GHG technology producers, and the process of innovation for GHG technology development. The analysis is based on the results of the 2002 Survey of Environmental Protection Expenditures (SEPE) and the 2002 Environment Industry Survey (EIS).
Release date: 2005-10-05 - 3. Measuring Employment in the Environment Industry ArchivedArticles and reports: 16-001-M2004001Description:
The collection of firms producing environmental goods and delivering environmental services constitutes the 'environment industry.' This industry has grown significantly in the past 20 years and stands to continue this development in the future as emerging issues such as the level of greenhouse gas emissions are addressed.
An important aspect in the evaluation of the industry's performance is in the area of job creation and employment generation. Related to the challenges involved in classifying firms to the environment industry is the issue of identifying the employees who work in environment-related activities. Currently, the published data on employment include only the total employment of those businesses producing environmental goods and services, i.e., employees who worked in the production/provision of goods and services that have both environmental and non-environmental applications.
Release date: 2004-04-06 - 4. Air quality in Canada ArchivedArticles and reports: 16-201-X20020006407Geography: CanadaDescription:
For millennia, changes in the earth's atmosphere were the result of natural forces. Over the past century, however, these changes have escalated as a result of human activities-mainly unprecedented growth in global population and consumption of natural resources to increase industrial production-that degrade and destroy the forests and other vital ecosystems essential to atmospheric processes. Such human activities produce large quantities of substances that are released in the air, where over time they can overload natural processes and eventually reach harmful levels. The result is poor air quality in urban and rural areas around the world.
This article addresses the following questions: What is the condition of our outdoor and indoor air? What effects does air quality have on our health and our environment? And what are governments and businesses doing to address air quality concerns?
Release date: 2002-11-06
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Articles and reports (4)
Articles and reports (4) ((4 results))
- Articles and reports: 12-001-X20070019850Description:
Auxiliary information is often used to improve the precision of survey estimators of finite population means and totals through ratio or linear regression estimation techniques. Resulting estimators have good theoretical and practical properties, including invariance, calibration and design consistency. However, it is not always clear that ratio or linear models are good approximations to the true relationship between the auxiliary variables and the variable of interest in the survey, resulting in efficiency loss when the model is not appropriate. In this article, we explain how regression estimation can be extended to incorporate semiparametric regression models, in both simple and more complicated designs. While maintaining the good theoretical and practical properties of the linear models, semiparametric models are better able to capture complicated relationships between variables. This often results in substantial gains in efficiency. The applicability of the approach for complex designs using multiple types of auxiliary variables will be illustrated by estimating several acidification-related characteristics for a survey of lakes in the Northeastern US.
Release date: 2007-06-28 - Articles and reports: 16-001-M2005002Description:
This paper evaluates Canadian industry performance in adopting and developing greenhouse gas (GHG) technologies. It addresses issues concerning business investments in GHG technologies, domestic and international market access for Canadian GHG technology producers, and the process of innovation for GHG technology development. The analysis is based on the results of the 2002 Survey of Environmental Protection Expenditures (SEPE) and the 2002 Environment Industry Survey (EIS).
Release date: 2005-10-05 - 3. Measuring Employment in the Environment Industry ArchivedArticles and reports: 16-001-M2004001Description:
The collection of firms producing environmental goods and delivering environmental services constitutes the 'environment industry.' This industry has grown significantly in the past 20 years and stands to continue this development in the future as emerging issues such as the level of greenhouse gas emissions are addressed.
An important aspect in the evaluation of the industry's performance is in the area of job creation and employment generation. Related to the challenges involved in classifying firms to the environment industry is the issue of identifying the employees who work in environment-related activities. Currently, the published data on employment include only the total employment of those businesses producing environmental goods and services, i.e., employees who worked in the production/provision of goods and services that have both environmental and non-environmental applications.
Release date: 2004-04-06 - 4. Air quality in Canada ArchivedArticles and reports: 16-201-X20020006407Geography: CanadaDescription:
For millennia, changes in the earth's atmosphere were the result of natural forces. Over the past century, however, these changes have escalated as a result of human activities-mainly unprecedented growth in global population and consumption of natural resources to increase industrial production-that degrade and destroy the forests and other vital ecosystems essential to atmospheric processes. Such human activities produce large quantities of substances that are released in the air, where over time they can overload natural processes and eventually reach harmful levels. The result is poor air quality in urban and rural areas around the world.
This article addresses the following questions: What is the condition of our outdoor and indoor air? What effects does air quality have on our health and our environment? And what are governments and businesses doing to address air quality concerns?
Release date: 2002-11-06
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