Author: T. Schneider
Publisher: Elsevier
ISBN: 0080544908
Category : Science
Languages : en
Pages : 1113
Book Description
This symposium was jointly organized by the United States Environmental Protection Agency and The Netherlands Ministry of Housing, Spatial Planning and the Environment. These proceedings will provide a stimulus for taking up the challenges of environmental policy development in the 21st century, and will contribute to continuing co-operation.Clean air is a basic condition for health. Air pollution aggravates respiratory problems, leading to increased sickness absenteeism, increased use of health care services and even premature mortality. Air pollution is under intensive discussion in the United States and Europe.In The Netherlands, a wide range of policy instruments have been formulated which have reduced air pollution. For example; since 1975, sulphur dioxide and lead emissions have been reduced. However, emission reduction figures for many other substances are more modest. Many air pollution problems persist because progress in countering these problems is nullified by growth in the economy and traffic. Another important target is the prevention of climate change. The international community is agreed that the increasing concentration of greenhouse gases in the atmosphere has led to a gradual increase in the earth's temperature. In terms of the environmental consequences and social implications, the greenhouse problem surpasses all other air quality problems.Across Europe, strategies are being developed to reduce acidification and photochemical air pollution. An air emission ceiling for each country in the European Union is being agreed. In the area of climate change, there is good co-operation between the United States, The Netherlands and other EU Members States in the ongoing global negotiations. This is the start of a new movement. In the last century economies and societies developed through increasing human productivity. In the next century they must develop through increasing the productivity of fuel and natural resources.
Air Pollution in the 21st Century
Author: T. Schneider
Publisher: Elsevier
ISBN: 0080544908
Category : Science
Languages : en
Pages : 1113
Book Description
This symposium was jointly organized by the United States Environmental Protection Agency and The Netherlands Ministry of Housing, Spatial Planning and the Environment. These proceedings will provide a stimulus for taking up the challenges of environmental policy development in the 21st century, and will contribute to continuing co-operation.Clean air is a basic condition for health. Air pollution aggravates respiratory problems, leading to increased sickness absenteeism, increased use of health care services and even premature mortality. Air pollution is under intensive discussion in the United States and Europe.In The Netherlands, a wide range of policy instruments have been formulated which have reduced air pollution. For example; since 1975, sulphur dioxide and lead emissions have been reduced. However, emission reduction figures for many other substances are more modest. Many air pollution problems persist because progress in countering these problems is nullified by growth in the economy and traffic. Another important target is the prevention of climate change. The international community is agreed that the increasing concentration of greenhouse gases in the atmosphere has led to a gradual increase in the earth's temperature. In terms of the environmental consequences and social implications, the greenhouse problem surpasses all other air quality problems.Across Europe, strategies are being developed to reduce acidification and photochemical air pollution. An air emission ceiling for each country in the European Union is being agreed. In the area of climate change, there is good co-operation between the United States, The Netherlands and other EU Members States in the ongoing global negotiations. This is the start of a new movement. In the last century economies and societies developed through increasing human productivity. In the next century they must develop through increasing the productivity of fuel and natural resources.
Publisher: Elsevier
ISBN: 0080544908
Category : Science
Languages : en
Pages : 1113
Book Description
This symposium was jointly organized by the United States Environmental Protection Agency and The Netherlands Ministry of Housing, Spatial Planning and the Environment. These proceedings will provide a stimulus for taking up the challenges of environmental policy development in the 21st century, and will contribute to continuing co-operation.Clean air is a basic condition for health. Air pollution aggravates respiratory problems, leading to increased sickness absenteeism, increased use of health care services and even premature mortality. Air pollution is under intensive discussion in the United States and Europe.In The Netherlands, a wide range of policy instruments have been formulated which have reduced air pollution. For example; since 1975, sulphur dioxide and lead emissions have been reduced. However, emission reduction figures for many other substances are more modest. Many air pollution problems persist because progress in countering these problems is nullified by growth in the economy and traffic. Another important target is the prevention of climate change. The international community is agreed that the increasing concentration of greenhouse gases in the atmosphere has led to a gradual increase in the earth's temperature. In terms of the environmental consequences and social implications, the greenhouse problem surpasses all other air quality problems.Across Europe, strategies are being developed to reduce acidification and photochemical air pollution. An air emission ceiling for each country in the European Union is being agreed. In the area of climate change, there is good co-operation between the United States, The Netherlands and other EU Members States in the ongoing global negotiations. This is the start of a new movement. In the last century economies and societies developed through increasing human productivity. In the next century they must develop through increasing the productivity of fuel and natural resources.
Environmental Health in the 21st Century [2 volumes]
Author: Richard V. Crume
Publisher: Bloomsbury Publishing USA
ISBN: 1440843651
Category : Medical
Languages : en
Pages : 757
Book Description
This concisely written and easy-to-read resource provides information on emerging issues and valuable historical context that enables students to better understand a broad range of environmental health topics, from pollution to infectious diseases, natural disasters, and waste management. As technology enables better insight into the world we live in, we are increasingly aware of environmental health concerns and risks, from contaminated air and water to infectious diseases and light and noise pollution. Because the quality of our lives depends on the quality of our environment, everyone should be informed about issues in environmental health. Environmental Health in the 21st Century: From Air Pollution to Zoonotic Diseases presents hundreds of encyclopedic entries written by expert researchers and practitioners, a history of environmental health, and interviews with subject experts that broadly survey the field of environmental health. The set covers myriad subjects in environmental health, including all types of environmental pollution; the spread of communicable diseases and other issues in the health sciences; waste management practices; the effects of climate change on human health; children's environmental health concerns; environmental health problems unique to the urban environment; and emerging threats such as the Zika virus and hospital-acquired infections. Readers will learn about steps they can take to reduce their environmental risk, understand the effects of key international treaties and conventions and the contributions of key figures in environmental health, and also reflect on potential solutions for global challenges in environmental pollution, health sciences, energy and climate, waste management, and the built environment. No other book on the market today addresses the environmental health field in such a comprehensive manner, with the latest information provided by expert practitioners, all packed into two concise volumes.
Publisher: Bloomsbury Publishing USA
ISBN: 1440843651
Category : Medical
Languages : en
Pages : 757
Book Description
This concisely written and easy-to-read resource provides information on emerging issues and valuable historical context that enables students to better understand a broad range of environmental health topics, from pollution to infectious diseases, natural disasters, and waste management. As technology enables better insight into the world we live in, we are increasingly aware of environmental health concerns and risks, from contaminated air and water to infectious diseases and light and noise pollution. Because the quality of our lives depends on the quality of our environment, everyone should be informed about issues in environmental health. Environmental Health in the 21st Century: From Air Pollution to Zoonotic Diseases presents hundreds of encyclopedic entries written by expert researchers and practitioners, a history of environmental health, and interviews with subject experts that broadly survey the field of environmental health. The set covers myriad subjects in environmental health, including all types of environmental pollution; the spread of communicable diseases and other issues in the health sciences; waste management practices; the effects of climate change on human health; children's environmental health concerns; environmental health problems unique to the urban environment; and emerging threats such as the Zika virus and hospital-acquired infections. Readers will learn about steps they can take to reduce their environmental risk, understand the effects of key international treaties and conventions and the contributions of key figures in environmental health, and also reflect on potential solutions for global challenges in environmental pollution, health sciences, energy and climate, waste management, and the built environment. No other book on the market today addresses the environmental health field in such a comprehensive manner, with the latest information provided by expert practitioners, all packed into two concise volumes.
The Airline Industry
Author: Alessandro Cento
Publisher: Springer Science & Business Media
ISBN: 3790820881
Category : Business & Economics
Languages : en
Pages : 189
Book Description
The debate on the future of the aviation sector and the viability of its traditional business practices is the core of this book. The liberalization of the EU market in the 1990s has radically modi?ed the competitive environment and the nature of airline competition. Furthermore, the new millennium began with terrorist attacks, epidemics, trade globalization, and the rise of oil prices, all of which combined to push the industry into a “perfect storm”. Airline industry pro?tability has been an elusive goal for several decades and the recent events has only accentuated existing weaknesses. The main concern of ind- try observers is whether the airline business model, successful during the 1980s and 1990s, is now sustainable in a market crowded by low-cost carriers. The airlines that will respond rapidly and determinedly to increase pressure to restructure, conso- date and segment the industry will achieve competitive advantages. In this context, the present study aims to model the new conduct of the ‘legacy’ carriers in a new liberalized European market in terms of network and pricing competition with l- cost carriers and competitive reaction to the global economic crises.
Publisher: Springer Science & Business Media
ISBN: 3790820881
Category : Business & Economics
Languages : en
Pages : 189
Book Description
The debate on the future of the aviation sector and the viability of its traditional business practices is the core of this book. The liberalization of the EU market in the 1990s has radically modi?ed the competitive environment and the nature of airline competition. Furthermore, the new millennium began with terrorist attacks, epidemics, trade globalization, and the rise of oil prices, all of which combined to push the industry into a “perfect storm”. Airline industry pro?tability has been an elusive goal for several decades and the recent events has only accentuated existing weaknesses. The main concern of ind- try observers is whether the airline business model, successful during the 1980s and 1990s, is now sustainable in a market crowded by low-cost carriers. The airlines that will respond rapidly and determinedly to increase pressure to restructure, conso- date and segment the industry will achieve competitive advantages. In this context, the present study aims to model the new conduct of the ‘legacy’ carriers in a new liberalized European market in terms of network and pricing competition with l- cost carriers and competitive reaction to the global economic crises.
Environmental Engineering for the 21st Century
Author: National Academies of Sciences, Engineering, and Medicine
Publisher: National Academies Press
ISBN: 0309476550
Category : Technology & Engineering
Languages : en
Pages : 125
Book Description
Environmental engineers support the well-being of people and the planet in areas where the two intersect. Over the decades the field has improved countless lives through innovative systems for delivering water, treating waste, and preventing and remediating pollution in air, water, and soil. These achievements are a testament to the multidisciplinary, pragmatic, systems-oriented approach that characterizes environmental engineering. Environmental Engineering for the 21st Century: Addressing Grand Challenges outlines the crucial role for environmental engineers in this period of dramatic growth and change. The report identifies five pressing challenges of the 21st century that environmental engineers are uniquely poised to help advance: sustainably supply food, water, and energy; curb climate change and adapt to its impacts; design a future without pollution and waste; create efficient, healthy, resilient cities; and foster informed decisions and actions.
Publisher: National Academies Press
ISBN: 0309476550
Category : Technology & Engineering
Languages : en
Pages : 125
Book Description
Environmental engineers support the well-being of people and the planet in areas where the two intersect. Over the decades the field has improved countless lives through innovative systems for delivering water, treating waste, and preventing and remediating pollution in air, water, and soil. These achievements are a testament to the multidisciplinary, pragmatic, systems-oriented approach that characterizes environmental engineering. Environmental Engineering for the 21st Century: Addressing Grand Challenges outlines the crucial role for environmental engineers in this period of dramatic growth and change. The report identifies five pressing challenges of the 21st century that environmental engineers are uniquely poised to help advance: sustainably supply food, water, and energy; curb climate change and adapt to its impacts; design a future without pollution and waste; create efficient, healthy, resilient cities; and foster informed decisions and actions.
Global Environmental Challenges of the Twenty-First Century
Author: David E. Lorey
Publisher: Rowman & Littlefield Publishers
ISBN: 0742581837
Category : Social Science
Languages : en
Pages : 340
Book Description
The most serious environmental problems of the twenty-first century have the potential to alter the course of life on this planet. Global warming, toxic waste, water and air pollution, acid rain, and shrinking energy supplies are frightening challenges that may threaten our future if we do not face up to them. Global Environmental Challenges provides important information and gives us hope about the environment. This book first helps us to grasp these difficulties, then shows us the choices we can make. How long to leave a light on, whether to take the car, the train, or bicycle to work, whether to recycle or throw away, whether to vote to curb continued suburban sprawl-all of these decisions can make a difference. This collection of some of the best essays and articles on the environment comes from a variety of sources, including journals, magazines, websites of ecological/conservation organizations, and other publications. Five major sections investigate the interaction of population growth, consumption, and environment; the emerging crisis in freshwater around the globe; global climate and atmosphere (including global warming); biodiversity loss; and the concept of sustainable development-using natural resources to place future human development on a sustainable path. The final section on sustainable development reveals how we can take action. As individuals, we can make a difference readily and easily without making huge personal sacrifices. As societies, we can work together in a global community of interest to sustain the earth. This valuable resource offers readers a better understanding of our environmental problems and presents solutions to improving the health of the planet.
Publisher: Rowman & Littlefield Publishers
ISBN: 0742581837
Category : Social Science
Languages : en
Pages : 340
Book Description
The most serious environmental problems of the twenty-first century have the potential to alter the course of life on this planet. Global warming, toxic waste, water and air pollution, acid rain, and shrinking energy supplies are frightening challenges that may threaten our future if we do not face up to them. Global Environmental Challenges provides important information and gives us hope about the environment. This book first helps us to grasp these difficulties, then shows us the choices we can make. How long to leave a light on, whether to take the car, the train, or bicycle to work, whether to recycle or throw away, whether to vote to curb continued suburban sprawl-all of these decisions can make a difference. This collection of some of the best essays and articles on the environment comes from a variety of sources, including journals, magazines, websites of ecological/conservation organizations, and other publications. Five major sections investigate the interaction of population growth, consumption, and environment; the emerging crisis in freshwater around the globe; global climate and atmosphere (including global warming); biodiversity loss; and the concept of sustainable development-using natural resources to place future human development on a sustainable path. The final section on sustainable development reveals how we can take action. As individuals, we can make a difference readily and easily without making huge personal sacrifices. As societies, we can work together in a global community of interest to sustain the earth. This valuable resource offers readers a better understanding of our environmental problems and presents solutions to improving the health of the planet.
ENVIRONMENTAL SUSTAINABILITY IN THE 21ST CENTURY: EMERGING ISSUES AND THE WAY FORWARD
Author: Dr. Ranjan Sarkar
Publisher: Namya Press
ISBN: 9390445078
Category : Education
Languages : en
Pages : 364
Book Description
The Book Environmental Sustainability In The 21st Century: Emerging Issues And The Way Forward represents the various emerging issues very much relevant to our environment in this 21st Century. An Environment is everything that is around us, which includes both living and nonliving things such as soil, water, animals and plants, which adapt themselves to their surroundings. The environment plays an important role in the existence of life on the planet earth. The most serious environmental problems of the twenty-first century have the potential to alter the course of life on this planet. Global warming, toxic waste, water and air pollution, acid rain, and shrinking energy supplies are frightening challenges that may threaten our future if we do not face up to them. In this book 23 chapters have been incorporated on various environmental issues and challenges we are facing now a days from various academicians and researchers.
Publisher: Namya Press
ISBN: 9390445078
Category : Education
Languages : en
Pages : 364
Book Description
The Book Environmental Sustainability In The 21st Century: Emerging Issues And The Way Forward represents the various emerging issues very much relevant to our environment in this 21st Century. An Environment is everything that is around us, which includes both living and nonliving things such as soil, water, animals and plants, which adapt themselves to their surroundings. The environment plays an important role in the existence of life on the planet earth. The most serious environmental problems of the twenty-first century have the potential to alter the course of life on this planet. Global warming, toxic waste, water and air pollution, acid rain, and shrinking energy supplies are frightening challenges that may threaten our future if we do not face up to them. In this book 23 chapters have been incorporated on various environmental issues and challenges we are facing now a days from various academicians and researchers.
Air Transport in the 21st Century
Author: John F. O'Connell
Publisher: Routledge
ISBN: 1351959891
Category : Business & Economics
Languages : en
Pages : 341
Book Description
Airlines are buffeted by fluctuating political and economic landscapes, ever-changing competition, technology developments, globalization, increasing deregulation and evolving customer requirements. As a consequence all sectors of the air transport industry are in a constant state of flux. The principle aim of this book is to review current trends in the airline industry and its related suppliers, thereby providing an insight into the forces that are changing its dynamics. The factors that are reshaping the structure of the industry are examined with a view to identifying the key issues whose impact will be critical in the future. The book features two very distinct sections. The first contains short contributions from industry executives at CEO/VP level from airlines, aircraft/engine manufacturers, safety and navigational provider organisations, who have set out their take of where the airline industry is heading. This commercial input sets the scene for the book and provides the bridge to the second section, which is composed of 18 chapters written by distinguished academic authors. Each chapter presents a valuable insight into a specific area of the air transport industry, including: airlines, airports, cargo, deregulation, the environment, navigation, strategy, information technology, security and tourism. The shared objective of the authors is to describe and explain the core competencies that are determining the current shape of the industry and to examine the forces that will change its direction going forward. The book is written in a management style and will appeal to all levels of personnel who work for airlines across the world. It is also written for airport authorities, aerospace manufacturers, regulatory and government transportation agencies, researchers and students of aviation management, transport studies, tourism and the wider air transport industry.
Publisher: Routledge
ISBN: 1351959891
Category : Business & Economics
Languages : en
Pages : 341
Book Description
Airlines are buffeted by fluctuating political and economic landscapes, ever-changing competition, technology developments, globalization, increasing deregulation and evolving customer requirements. As a consequence all sectors of the air transport industry are in a constant state of flux. The principle aim of this book is to review current trends in the airline industry and its related suppliers, thereby providing an insight into the forces that are changing its dynamics. The factors that are reshaping the structure of the industry are examined with a view to identifying the key issues whose impact will be critical in the future. The book features two very distinct sections. The first contains short contributions from industry executives at CEO/VP level from airlines, aircraft/engine manufacturers, safety and navigational provider organisations, who have set out their take of where the airline industry is heading. This commercial input sets the scene for the book and provides the bridge to the second section, which is composed of 18 chapters written by distinguished academic authors. Each chapter presents a valuable insight into a specific area of the air transport industry, including: airlines, airports, cargo, deregulation, the environment, navigation, strategy, information technology, security and tourism. The shared objective of the authors is to describe and explain the core competencies that are determining the current shape of the industry and to examine the forces that will change its direction going forward. The book is written in a management style and will appeal to all levels of personnel who work for airlines across the world. It is also written for airport authorities, aerospace manufacturers, regulatory and government transportation agencies, researchers and students of aviation management, transport studies, tourism and the wider air transport industry.
How to Avoid a Climate Disaster
Author: Bill Gates
Publisher: Vintage
ISBN: 0385546149
Category : Science
Languages : en
Pages : 201
Book Description
#1 NEW YORK TIMES BEST SELLER • In this urgent, authoritative book, Bill Gates sets out a wide-ranging, practical—and accessible—plan for how the world can get to zero greenhouse gas emissions in time to avoid a climate catastrophe. Bill Gates has spent a decade investigating the causes and effects of climate change. With the help of experts in the fields of physics, chemistry, biology, engineering, political science, and finance, he has focused on what must be done in order to stop the planet's slide to certain environmental disaster. In this book, he not only explains why we need to work toward net-zero emissions of greenhouse gases, but also details what we need to do to achieve this profoundly important goal. He gives us a clear-eyed description of the challenges we face. Drawing on his understanding of innovation and what it takes to get new ideas into the market, he describes the areas in which technology is already helping to reduce emissions, where and how the current technology can be made to function more effectively, where breakthrough technologies are needed, and who is working on these essential innovations. Finally, he lays out a concrete, practical plan for achieving the goal of zero emissions—suggesting not only policies that governments should adopt, but what we as individuals can do to keep our government, our employers, and ourselves accountable in this crucial enterprise. As Bill Gates makes clear, achieving zero emissions will not be simple or easy to do, but if we follow the plan he sets out here, it is a goal firmly within our reach.
Publisher: Vintage
ISBN: 0385546149
Category : Science
Languages : en
Pages : 201
Book Description
#1 NEW YORK TIMES BEST SELLER • In this urgent, authoritative book, Bill Gates sets out a wide-ranging, practical—and accessible—plan for how the world can get to zero greenhouse gas emissions in time to avoid a climate catastrophe. Bill Gates has spent a decade investigating the causes and effects of climate change. With the help of experts in the fields of physics, chemistry, biology, engineering, political science, and finance, he has focused on what must be done in order to stop the planet's slide to certain environmental disaster. In this book, he not only explains why we need to work toward net-zero emissions of greenhouse gases, but also details what we need to do to achieve this profoundly important goal. He gives us a clear-eyed description of the challenges we face. Drawing on his understanding of innovation and what it takes to get new ideas into the market, he describes the areas in which technology is already helping to reduce emissions, where and how the current technology can be made to function more effectively, where breakthrough technologies are needed, and who is working on these essential innovations. Finally, he lays out a concrete, practical plan for achieving the goal of zero emissions—suggesting not only policies that governments should adopt, but what we as individuals can do to keep our government, our employers, and ourselves accountable in this crucial enterprise. As Bill Gates makes clear, achieving zero emissions will not be simple or easy to do, but if we follow the plan he sets out here, it is a goal firmly within our reach.
Traffic-Related Air Pollution
Author: Haneen Khreis
Publisher: Elsevier
ISBN: 0128181230
Category : Transportation
Languages : en
Pages : 650
Book Description
Traffic-Related Air Pollution synthesizes and maps TRAP and its impact on human health at the individual and population level. The book analyzes mitigating standards and regulations with a focus on cities. It provides the methods and tools for assessing and quantifying the associated road traffic emissions, air pollution, exposure and population-based health impacts, while also illuminating the mechanisms underlying health impacts through clinical and toxicological research. Real-world implications are set alongside policy options, emerging technologies and best practices. Finally, the book recommends ways to influence discourse and policy to better account for the health impacts of TRAP and its societal costs. - Overviews existing and emerging tools to assess TRAP's public health impacts - Examines TRAP's health effects at the population level - Explores the latest technologies and policies--alongside their potential effectiveness and adverse consequences--for mitigating TRAP - Guides on how methods and tools can leverage teaching, practice and policymaking to ameliorate TRAP and its effects
Publisher: Elsevier
ISBN: 0128181230
Category : Transportation
Languages : en
Pages : 650
Book Description
Traffic-Related Air Pollution synthesizes and maps TRAP and its impact on human health at the individual and population level. The book analyzes mitigating standards and regulations with a focus on cities. It provides the methods and tools for assessing and quantifying the associated road traffic emissions, air pollution, exposure and population-based health impacts, while also illuminating the mechanisms underlying health impacts through clinical and toxicological research. Real-world implications are set alongside policy options, emerging technologies and best practices. Finally, the book recommends ways to influence discourse and policy to better account for the health impacts of TRAP and its societal costs. - Overviews existing and emerging tools to assess TRAP's public health impacts - Examines TRAP's health effects at the population level - Explores the latest technologies and policies--alongside their potential effectiveness and adverse consequences--for mitigating TRAP - Guides on how methods and tools can leverage teaching, practice and policymaking to ameliorate TRAP and its effects
The Future of the Public's Health in the 21st Century
Author: Institute of Medicine
Publisher: National Academies Press
ISBN: 0309133181
Category : Medical
Languages : en
Pages : 536
Book Description
The anthrax incidents following the 9/11 terrorist attacks put the spotlight on the nation's public health agencies, placing it under an unprecedented scrutiny that added new dimensions to the complex issues considered in this report. The Future of the Public's Health in the 21st Century reaffirms the vision of Healthy People 2010, and outlines a systems approach to assuring the nation's health in practice, research, and policy. This approach focuses on joining the unique resources and perspectives of diverse sectors and entities and challenges these groups to work in a concerted, strategic way to promote and protect the public's health. Focusing on diverse partnerships as the framework for public health, the book discusses: The need for a shift from an individual to a population-based approach in practice, research, policy, and community engagement. The status of the governmental public health infrastructure and what needs to be improved, including its interface with the health care delivery system. The roles nongovernment actors, such as academia, business, local communities and the media can play in creating a healthy nation. Providing an accessible analysis, this book will be important to public health policy-makers and practitioners, business and community leaders, health advocates, educators and journalists.
Publisher: National Academies Press
ISBN: 0309133181
Category : Medical
Languages : en
Pages : 536
Book Description
The anthrax incidents following the 9/11 terrorist attacks put the spotlight on the nation's public health agencies, placing it under an unprecedented scrutiny that added new dimensions to the complex issues considered in this report. The Future of the Public's Health in the 21st Century reaffirms the vision of Healthy People 2010, and outlines a systems approach to assuring the nation's health in practice, research, and policy. This approach focuses on joining the unique resources and perspectives of diverse sectors and entities and challenges these groups to work in a concerted, strategic way to promote and protect the public's health. Focusing on diverse partnerships as the framework for public health, the book discusses: The need for a shift from an individual to a population-based approach in practice, research, policy, and community engagement. The status of the governmental public health infrastructure and what needs to be improved, including its interface with the health care delivery system. The roles nongovernment actors, such as academia, business, local communities and the media can play in creating a healthy nation. Providing an accessible analysis, this book will be important to public health policy-makers and practitioners, business and community leaders, health advocates, educators and journalists.