Vikramjit Singh, Brandon Walther, Kristin L. Wood, and Dan Jensen
- Published in print:
- 2009
- Published Online:
- September 2009
- ISBN:
- 9780195381634
- eISBN:
- 9780199870264
- Item type:
- chapter
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/acprof:oso/9780195381634.003.0009
- Subject:
- Psychology, Cognitive Psychology
Products that transform to reveal new functionality have been a source of fascination and utility for ages. Such products–transformers, such as the toys with this namesake–have been previously ...
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Products that transform to reveal new functionality have been a source of fascination and utility for ages. Such products–transformers, such as the toys with this namesake–have been previously designed employing ad hoc creativity rather than by pursuing any formal design methodology. By incorporating a design methodology and a concept generation tool for transformers, this research not only unearths further utility for these innovative and revolutionary products but also aids engineers in the design of these devices with dexterity. The success and advantages of transformers result from added functionality while simultaneously using fewer resources and occupying less space. This chapter elucidates the foundation of a methodology for the design of such transforming devices. the basic research conducted on transforming systems involves a combined inductive and deductive approach, uncovering transformation design principles and a novel method for designing transforming products. In the early stages of design, this method employs a unique process to extract customer needs by examining the requirement hierarchy of product usage scenarios. Such an approach broadens the scope of design and aids in identifying opportunities for transforming products while developing process level insights and solutions catering to these needs. During the concept generation phase of design, the method exploits the transformation design principles as a novel tool to complement and expand contemporary concept generation techniques. A unique bicycle accessory that transforms from a lock to a pump and vice versa is provided as an example of the transformational design process. This application displays, in form, the potential of the method to bring about a significant change in the engineering design culture and, in particular, how we innovate.Less
Products that transform to reveal new functionality have been a source of fascination and utility for ages. Such products–transformers, such as the toys with this namesake–have been previously designed employing ad hoc creativity rather than by pursuing any formal design methodology. By incorporating a design methodology and a concept generation tool for transformers, this research not only unearths further utility for these innovative and revolutionary products but also aids engineers in the design of these devices with dexterity. The success and advantages of transformers result from added functionality while simultaneously using fewer resources and occupying less space. This chapter elucidates the foundation of a methodology for the design of such transforming devices. the basic research conducted on transforming systems involves a combined inductive and deductive approach, uncovering transformation design principles and a novel method for designing transforming products. In the early stages of design, this method employs a unique process to extract customer needs by examining the requirement hierarchy of product usage scenarios. Such an approach broadens the scope of design and aids in identifying opportunities for transforming products while developing process level insights and solutions catering to these needs. During the concept generation phase of design, the method exploits the transformation design principles as a novel tool to complement and expand contemporary concept generation techniques. A unique bicycle accessory that transforms from a lock to a pump and vice versa is provided as an example of the transformational design process. This application displays, in form, the potential of the method to bring about a significant change in the engineering design culture and, in particular, how we innovate.
Shawn Malley
- Published in print:
- 2018
- Published Online:
- May 2019
- ISBN:
- 9781786941190
- eISBN:
- 9781789629088
- Item type:
- chapter
- Publisher:
- Liverpool University Press
- DOI:
- 10.3828/liverpool/9781786941190.003.0004
- Subject:
- Film, Television and Radio, Film
This chapter examines the representation of archaeology in the action/adventure cinematics of Michael Bay's Transformers 2: Revenge of the Fallen (2007), a film predicated on hidden relics ...
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This chapter examines the representation of archaeology in the action/adventure cinematics of Michael Bay's Transformers 2: Revenge of the Fallen (2007), a film predicated on hidden relics transforming explosively into action. The film's diegetic environment—which features a hunt for a lost relic that happens to be the key to an ancient doomsday device secreted away inside the Great Pyramid at Giza—is analogous to the its specific geographical and historical setting. The film is "Babylonian" in that it invokes Orientalist imagery as an almost inevitable generic necessity within SF action/adventure cinema. The chapter argues specifically that the military, archaeological and geopolitical motifs of the film are most clearly and coherently aligned in the framing and shot-making techniques of the action sequences themselves. By figuratively compressing time into literally compressed spaces (here principal photography at Petra, Giza and Luxor is collapsed into a single location), the set/setting is a chronotopic threshold that transforms antiquity into a battle ground for military technocratic modernity.Less
This chapter examines the representation of archaeology in the action/adventure cinematics of Michael Bay's Transformers 2: Revenge of the Fallen (2007), a film predicated on hidden relics transforming explosively into action. The film's diegetic environment—which features a hunt for a lost relic that happens to be the key to an ancient doomsday device secreted away inside the Great Pyramid at Giza—is analogous to the its specific geographical and historical setting. The film is "Babylonian" in that it invokes Orientalist imagery as an almost inevitable generic necessity within SF action/adventure cinema. The chapter argues specifically that the military, archaeological and geopolitical motifs of the film are most clearly and coherently aligned in the framing and shot-making techniques of the action sequences themselves. By figuratively compressing time into literally compressed spaces (here principal photography at Petra, Giza and Luxor is collapsed into a single location), the set/setting is a chronotopic threshold that transforms antiquity into a battle ground for military technocratic modernity.
Stephen Doheny-Farina
- Published in print:
- 2001
- Published Online:
- October 2013
- ISBN:
- 9780300089776
- eISBN:
- 9780300133820
- Item type:
- book
- Publisher:
- Yale University Press
- DOI:
- 10.12987/yale/9780300089776.001.0001
- Subject:
- Environmental Science, Nature
This book focuses on electric grids and tells the stories about two villages separated by time, connected by proximity, and united by the challenges of maintaining a community under duress. The story ...
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This book focuses on electric grids and tells the stories about two villages separated by time, connected by proximity, and united by the challenges of maintaining a community under duress. The story of one village presents an insider's view of a natural disaster, describing the destruction of the electric grid in January 1998 and the emergence of a community that filled the resulting void. It begins with moments in the lives of people in the village of Potsdam, New York and expands to cover the breadth of the disaster. The book concludes with a timeline of events that traces the disaster from the storm's origins in the Gulf of Mexico to the lethal flooding it caused as it moved slowly up the eastern seaboard to the icy devastation it brought to the Northeast. The story of the other village begins nearly 200 years before the ice storm in a place called Louisville Landing, about twenty miles from Potsdam on the border between the United States and Canada. This narrative provides a glimpse of what it took to build the kind of grids that made America, the grids which connect people to one another, and is told through the experiences of some of the people who sacrificed the most to build the grids.Less
This book focuses on electric grids and tells the stories about two villages separated by time, connected by proximity, and united by the challenges of maintaining a community under duress. The story of one village presents an insider's view of a natural disaster, describing the destruction of the electric grid in January 1998 and the emergence of a community that filled the resulting void. It begins with moments in the lives of people in the village of Potsdam, New York and expands to cover the breadth of the disaster. The book concludes with a timeline of events that traces the disaster from the storm's origins in the Gulf of Mexico to the lethal flooding it caused as it moved slowly up the eastern seaboard to the icy devastation it brought to the Northeast. The story of the other village begins nearly 200 years before the ice storm in a place called Louisville Landing, about twenty miles from Potsdam on the border between the United States and Canada. This narrative provides a glimpse of what it took to build the kind of grids that made America, the grids which connect people to one another, and is told through the experiences of some of the people who sacrificed the most to build the grids.
Katharina Zimmermann
- Published in print:
- 2019
- Published Online:
- May 2020
- ISBN:
- 9781447346517
- eISBN:
- 9781447346555
- Item type:
- chapter
- Publisher:
- Policy Press
- DOI:
- 10.1332/policypress/9781447346517.003.0008
- Subject:
- Political Science, Public Policy
Chapter 8 departs from the empirical findings presented in chapter 6 and 7 and develops an empirically-grounded typology of local responses to the European Social Fund in the field of social and ...
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Chapter 8 departs from the empirical findings presented in chapter 6 and 7 and develops an empirically-grounded typology of local responses to the European Social Fund in the field of social and employment policies. The three major empirical patterns of how local policy fields deal with the ESF and under which conditions they do so, are discussed in turn. The first type refers to the so-called ‘refuseniks’; cases where local social and employment actors experienced the ESF more as a burden than as a welcome financial gift. In the second type, it was observable that actors with clear and pre-defined own ideas used the ESF-funding to finance these ideas. Such ‘cream skimmer’ cases did not experience significant change of their local policy fields through the ESF. In the third type (the ‘transformers’), this was clearly different: here, local social and employment policies were strongly shaped by the ESF. Chapter 8 discusses to what extent these types can be (contingently) generalised to other cases in Europe and beyond, and what the implications of the findings are for theoretical debates in the field of Europeanisation.Less
Chapter 8 departs from the empirical findings presented in chapter 6 and 7 and develops an empirically-grounded typology of local responses to the European Social Fund in the field of social and employment policies. The three major empirical patterns of how local policy fields deal with the ESF and under which conditions they do so, are discussed in turn. The first type refers to the so-called ‘refuseniks’; cases where local social and employment actors experienced the ESF more as a burden than as a welcome financial gift. In the second type, it was observable that actors with clear and pre-defined own ideas used the ESF-funding to finance these ideas. Such ‘cream skimmer’ cases did not experience significant change of their local policy fields through the ESF. In the third type (the ‘transformers’), this was clearly different: here, local social and employment policies were strongly shaped by the ESF. Chapter 8 discusses to what extent these types can be (contingently) generalised to other cases in Europe and beyond, and what the implications of the findings are for theoretical debates in the field of Europeanisation.
Patrick Magee and Mark Tooley
- Published in print:
- 2011
- Published Online:
- November 2020
- ISBN:
- 9780199595150
- eISBN:
- 9780191918032
- Item type:
- chapter
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/oso/9780199595150.003.0008
- Subject:
- Clinical Medicine and Allied Health, Anesthesiology
Electricity is a broad term that includes a variety of phenomena resulting from the flow (or presence) of electric charge. It is a complex subject, but this chapter ...
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Electricity is a broad term that includes a variety of phenomena resulting from the flow (or presence) of electric charge. It is a complex subject, but this chapter will provide the necessary background for simple electric circuits here, and the following chapters on electronics, biological signal processing, and electrical safety. Electric charge is a property of certain subatomic particles. Charge originates in the atom, in which its most familiar carriers are the proton and electron. By convention, electrons carry a negative charge while protons carry a positive charge. The protons are located in the centre of the atom and the electrons are in motion outside of the nucleus in orbits. In simplistic terms, the protons are trapped inside the nucleus making it difficult for them to ‘escape’. Under certain conditions, however, electrons can escape, and the movement of them is ‘electricity’. Charge may be transferred between bodies, either by direct contact, or by using a conducting material such as copper or wire. Static electricity refers to the imbalance of charge on a body, usually caused by friction when two dissimilar materials are rubbed together, transferring charge from one to the other. Charge is measured in coulombs (C) and one coulomb contains 6.24 × 1018 electrons. The movement of this electric charge is known as an electric current, and the magnitude of this is measured in amperes. One ampere flowing for one second passes a coulomb of charge. So the current (I) = C s−1. By historical convention, conventional current flows from the most positive part of a circuit to the negative and this concept is continued in this text and most others (but in fact the actual flow of the electrons is in the opposite direction). Current flowing through a wire causes many observable effects, for example heating and magnetism. Magnetism will be discussed later. Voltage was historically called tension or pressure, which captured the concept well, and a water analogy can further help with this understanding and is discussed later. Voltage is the electric potential energy per unit charge, measured in joules per coulomb (V, volts = J C−1).
Less
Electricity is a broad term that includes a variety of phenomena resulting from the flow (or presence) of electric charge. It is a complex subject, but this chapter will provide the necessary background for simple electric circuits here, and the following chapters on electronics, biological signal processing, and electrical safety. Electric charge is a property of certain subatomic particles. Charge originates in the atom, in which its most familiar carriers are the proton and electron. By convention, electrons carry a negative charge while protons carry a positive charge. The protons are located in the centre of the atom and the electrons are in motion outside of the nucleus in orbits. In simplistic terms, the protons are trapped inside the nucleus making it difficult for them to ‘escape’. Under certain conditions, however, electrons can escape, and the movement of them is ‘electricity’. Charge may be transferred between bodies, either by direct contact, or by using a conducting material such as copper or wire. Static electricity refers to the imbalance of charge on a body, usually caused by friction when two dissimilar materials are rubbed together, transferring charge from one to the other. Charge is measured in coulombs (C) and one coulomb contains 6.24 × 1018 electrons. The movement of this electric charge is known as an electric current, and the magnitude of this is measured in amperes. One ampere flowing for one second passes a coulomb of charge. So the current (I) = C s−1. By historical convention, conventional current flows from the most positive part of a circuit to the negative and this concept is continued in this text and most others (but in fact the actual flow of the electrons is in the opposite direction). Current flowing through a wire causes many observable effects, for example heating and magnetism. Magnetism will be discussed later. Voltage was historically called tension or pressure, which captured the concept well, and a water analogy can further help with this understanding and is discussed later. Voltage is the electric potential energy per unit charge, measured in joules per coulomb (V, volts = J C−1).
Carol Vernallis
- Published in print:
- 2013
- Published Online:
- September 2013
- ISBN:
- 9780199766994
- eISBN:
- 9780199369010
- Item type:
- chapter
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/acprof:oso/9780199766994.003.0002
- Subject:
- Music, Popular, History, American
Have the techniques and technologies of the digital era so transformed cinema that they have changed the nature of viewers’ experiences? This chapter considers brief segments from a variety of films ...
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Have the techniques and technologies of the digital era so transformed cinema that they have changed the nature of viewers’ experiences? This chapter considers brief segments from a variety of films to address this question, including Summer of Sam, SLC Punk!, Run Lola Run, Se7en, Transformers, Death Proof, Kill Bill, (500) Days of Summer, Day Watch, and several by Johnnie To. In almost all cases, heightened audiovisual relations enable these new styles and forms, though other influences contribute too, including previsualization, CGI, Avid editing and Pro Tools; recent innovations in acting and lighting; changing forms of industry organization and production culture; varied modes of distribution and reception; and intensified global sharing across genres and styles. Attending to these segments may help us envision new forms of post-classical cinema.Less
Have the techniques and technologies of the digital era so transformed cinema that they have changed the nature of viewers’ experiences? This chapter considers brief segments from a variety of films to address this question, including Summer of Sam, SLC Punk!, Run Lola Run, Se7en, Transformers, Death Proof, Kill Bill, (500) Days of Summer, Day Watch, and several by Johnnie To. In almost all cases, heightened audiovisual relations enable these new styles and forms, though other influences contribute too, including previsualization, CGI, Avid editing and Pro Tools; recent innovations in acting and lighting; changing forms of industry organization and production culture; varied modes of distribution and reception; and intensified global sharing across genres and styles. Attending to these segments may help us envision new forms of post-classical cinema.
Stephen Doheny-Farina
- Published in print:
- 2001
- Published Online:
- October 2013
- ISBN:
- 9780300089776
- eISBN:
- 9780300133820
- Item type:
- chapter
- Publisher:
- Yale University Press
- DOI:
- 10.12987/yale/9780300089776.003.0006
- Subject:
- Environmental Science, Nature
This chapter discusses the impact of an ice storm on the United States and Canada. In the United States alone, the storm damaged about 18 million acres of rural and urban forests in Maine, New ...
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This chapter discusses the impact of an ice storm on the United States and Canada. In the United States alone, the storm damaged about 18 million acres of rural and urban forests in Maine, New Hampshire, New York, and Vermont. In New York, the power outage lasted twenty-three days; more than 1,000 transmission towers were damaged; and power companies replaced over 8,000 poles, 1,800 transformers, and 500 miles of wire. In Canada, the outage lasted thirty-three days; more than 1,300 steel towers were damaged; power companies replaced over 35,000 poles and 5,000 transformers. The Canadian response involved the largest peacetime mobilization of military troops in the nation's history. The impact on the region's dairy herds was massive. In New York, 1,400 out of 1,800 dairy farms in the storm region suffered losses.Less
This chapter discusses the impact of an ice storm on the United States and Canada. In the United States alone, the storm damaged about 18 million acres of rural and urban forests in Maine, New Hampshire, New York, and Vermont. In New York, the power outage lasted twenty-three days; more than 1,000 transmission towers were damaged; and power companies replaced over 8,000 poles, 1,800 transformers, and 500 miles of wire. In Canada, the outage lasted thirty-three days; more than 1,300 steel towers were damaged; power companies replaced over 35,000 poles and 5,000 transformers. The Canadian response involved the largest peacetime mobilization of military troops in the nation's history. The impact on the region's dairy herds was massive. In New York, 1,400 out of 1,800 dairy farms in the storm region suffered losses.
John L. Neufeld
- Published in print:
- 2016
- Published Online:
- May 2017
- ISBN:
- 9780226399638
- eISBN:
- 9780226399775
- Item type:
- chapter
- Publisher:
- University of Chicago Press
- DOI:
- 10.7208/chicago/9780226399775.003.0002
- Subject:
- Economics and Finance, Economic History
The discoveries and inventions that preceded and accompanied the early commercialization of electricity are discussed, including the development of batteries and generators and both arc and ...
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The discoveries and inventions that preceded and accompanied the early commercialization of electricity are discussed, including the development of batteries and generators and both arc and incandescent lighting. Arc lighting was commercialized before incandescent. The requirements of a system providing electricity for incandescent lighting are very different than that required for arc lighting, requiring parallel rather than series circuits and the application of Ohm’s law. Thomas Edison understood the implications of the difference and the consequent requirement for new generators, meters, fuses, wiring technique and the resistance of an incandescent bulb, all of which he did. His competitors and successors in the industry all embraced his system, which remains in use today. Edison’s claim to have invented the incandescent light is debatable; his role as the inventor of the modern electric utility industry is not.Less
The discoveries and inventions that preceded and accompanied the early commercialization of electricity are discussed, including the development of batteries and generators and both arc and incandescent lighting. Arc lighting was commercialized before incandescent. The requirements of a system providing electricity for incandescent lighting are very different than that required for arc lighting, requiring parallel rather than series circuits and the application of Ohm’s law. Thomas Edison understood the implications of the difference and the consequent requirement for new generators, meters, fuses, wiring technique and the resistance of an incandescent bulb, all of which he did. His competitors and successors in the industry all embraced his system, which remains in use today. Edison’s claim to have invented the incandescent light is debatable; his role as the inventor of the modern electric utility industry is not.
Derek Johnson
- Published in print:
- 2013
- Published Online:
- March 2016
- ISBN:
- 9780814743478
- eISBN:
- 9780814743492
- Item type:
- chapter
- Publisher:
- NYU Press
- DOI:
- 10.18574/nyu/9780814743478.003.0004
- Subject:
- Society and Culture, Media Studies
This chapter addresses the perceived ingenuity of contemporary branding strategy in order to expose other trajectories, particularly the global forces that networked production over time, along which ...
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This chapter addresses the perceived ingenuity of contemporary branding strategy in order to expose other trajectories, particularly the global forces that networked production over time, along which franchising like Transformers has developed. Instead of conceptualizing franchising in terms of its most successful moments, one can assess it in terms of a constant production cycle that constitutes reorganization, management and experimentation, as well as decline across multiple global contexts. The chapter uses the Transformers property in exploring the cultural tensions that emerge when national frames persist in making sense of franchised production. It draws upon samples of press articles and reviews in which critics sought to make sense of this vast system of toys, television, film, comics, and video games in relation to the national cultures of the United States, Japan, United Kingdom, Singapore, Malaysia, China, and Australia.Less
This chapter addresses the perceived ingenuity of contemporary branding strategy in order to expose other trajectories, particularly the global forces that networked production over time, along which franchising like Transformers has developed. Instead of conceptualizing franchising in terms of its most successful moments, one can assess it in terms of a constant production cycle that constitutes reorganization, management and experimentation, as well as decline across multiple global contexts. The chapter uses the Transformers property in exploring the cultural tensions that emerge when national frames persist in making sense of franchised production. It draws upon samples of press articles and reviews in which critics sought to make sense of this vast system of toys, television, film, comics, and video games in relation to the national cultures of the United States, Japan, United Kingdom, Singapore, Malaysia, China, and Australia.
Benjamin Hoy
- Published in print:
- 2021
- Published Online:
- February 2021
- ISBN:
- 9780197528693
- eISBN:
- 9780197528723
- Item type:
- chapter
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/oso/9780197528693.003.0007
- Subject:
- History, American History: 19th Century
On the Pacific Coast, the transition from boundary survey to day-to-day control took half a century. Canadian and American dependence on Indigenous labor limited the restrictions they could ...
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On the Pacific Coast, the transition from boundary survey to day-to-day control took half a century. Canadian and American dependence on Indigenous labor limited the restrictions they could implement. By the mid-1880s, the immigration of hundreds of thousands of settlers shifted the balance of power. Both governments drove the Coast Salish out of the work force and imposed a new geographic order on top of existing Indigenous ones. At the same time, Chinese immigration drove grassroots pressure to reform federal border controls. In the wake of riots, protest, and vigilante justice, the United States passed Chinese Exclusion Acts in 1882 and 1888 and Canada developed a head tax.Less
On the Pacific Coast, the transition from boundary survey to day-to-day control took half a century. Canadian and American dependence on Indigenous labor limited the restrictions they could implement. By the mid-1880s, the immigration of hundreds of thousands of settlers shifted the balance of power. Both governments drove the Coast Salish out of the work force and imposed a new geographic order on top of existing Indigenous ones. At the same time, Chinese immigration drove grassroots pressure to reform federal border controls. In the wake of riots, protest, and vigilante justice, the United States passed Chinese Exclusion Acts in 1882 and 1888 and Canada developed a head tax.
John R. Wilson, Mirijam Gaertner, Charles L. Griffiths, Ian Kotzé, David C. Le Maitre, Sean M. Marr, Mike D. Picker, Dian Spear, Louise Stafford, David M. Richardson, Brian W. van Wilgen, and Andrew Wannenburgh
- Published in print:
- 2014
- Published Online:
- October 2014
- ISBN:
- 9780199679584
- eISBN:
- 9780191791949
- Item type:
- chapter
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/acprof:oso/9780199679584.003.0012
- Subject:
- Biology, Ecology
The Cape Floristic Region (CFR) is the most invaded terrestrial area in South Africa in
terms of the conspicuous prominence of (mainly woody) invasive plants, the area invaded
as surveyed, and the ...
More
The Cape Floristic Region (CFR) is the most invaded terrestrial area in South Africa in
terms of the conspicuous prominence of (mainly woody) invasive plants, the area invaded
as surveyed, and the numbers of animal invaders. This chapter provides a background to
the history, current distribution patterns, and possible futures of introduced and
invasive alien species in the CFR, and details how the impacts and management of
biological invasions have changed through time. Invasions in the region are dominated by
plants — an estimated 21% of the untransformed area of the CFR has been invaded by
introduced plants, with strandveld, alluvial vegetation, and wetlands particularly
affected. There has been significant government investment into invasive species
management in the CFR (through the Working for Water Programme), focussing largely on
known transformer species, but in only a few instances (specifically where classical
biological control has been used successfully) have there been real reductions in the
size of the problem. Future progress will require greater engagement with the public,
better implementation, occasionally a more pragmatic approach, e.g. to deal with novel
ecosystems, and an understanding of the risks of all types of species translocations.
But for many groups little is known about which species are invading, what impacts they
cause, and what the major future risks are likely to be, i.e., the invasion debt. A
consolidated list of alien animals and plants in the region, categorized wherever
possible according to Blackburn’s unified framework, is provided.Less
The Cape Floristic Region (CFR) is the most invaded terrestrial area in South Africa in
terms of the conspicuous prominence of (mainly woody) invasive plants, the area invaded
as surveyed, and the numbers of animal invaders. This chapter provides a background to
the history, current distribution patterns, and possible futures of introduced and
invasive alien species in the CFR, and details how the impacts and management of
biological invasions have changed through time. Invasions in the region are dominated by
plants — an estimated 21% of the untransformed area of the CFR has been invaded by
introduced plants, with strandveld, alluvial vegetation, and wetlands particularly
affected. There has been significant government investment into invasive species
management in the CFR (through the Working for Water Programme), focussing largely on
known transformer species, but in only a few instances (specifically where classical
biological control has been used successfully) have there been real reductions in the
size of the problem. Future progress will require greater engagement with the public,
better implementation, occasionally a more pragmatic approach, e.g. to deal with novel
ecosystems, and an understanding of the risks of all types of species translocations.
But for many groups little is known about which species are invading, what impacts they
cause, and what the major future risks are likely to be, i.e., the invasion debt. A
consolidated list of alien animals and plants in the region, categorized wherever
possible according to Blackburn’s unified framework, is provided.
José Capmany and Daniel Pérez
- Published in print:
- 2020
- Published Online:
- May 2020
- ISBN:
- 9780198844402
- eISBN:
- 9780191879944
- Item type:
- chapter
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/oso/9780198844402.003.0007
- Subject:
- Physics, Atomic, Laser, and Optical Physics, Particle Physics / Astrophysics / Cosmology
Programmable photonics can find applications in myriad areas including the quantum information field, which encompasses communications, computing, sensing and tomography. Large-scale bulk optics ...
More
Programmable photonics can find applications in myriad areas including the quantum information field, which encompasses communications, computing, sensing and tomography. Large-scale bulk optics setups previously prevented the development of more complex and scalable quantum optics configurations. Linear optic systems with the required fidelity require a strict control of interference through demanding phase stability mechanisms. Integrating a considerable number of photonic elements on a chip in order to implement multi-port interferometers has become the only viable technological path towards quantum information systems. This chapter introduces the applications of programmable photonics to quantum information systems. After introducing the general framework of a programmable quantum photonic system integrated on a chip and briefly describing the role of more external components such as sources and detectors, it covers the relationship between reconfigurable integrated optic circuits and linear optical quantum gates, quantum transport simulation, boson sampling and complex Hadamard and quantum Fourier transforms.Less
Programmable photonics can find applications in myriad areas including the quantum information field, which encompasses communications, computing, sensing and tomography. Large-scale bulk optics setups previously prevented the development of more complex and scalable quantum optics configurations. Linear optic systems with the required fidelity require a strict control of interference through demanding phase stability mechanisms. Integrating a considerable number of photonic elements on a chip in order to implement multi-port interferometers has become the only viable technological path towards quantum information systems. This chapter introduces the applications of programmable photonics to quantum information systems. After introducing the general framework of a programmable quantum photonic system integrated on a chip and briefly describing the role of more external components such as sources and detectors, it covers the relationship between reconfigurable integrated optic circuits and linear optical quantum gates, quantum transport simulation, boson sampling and complex Hadamard and quantum Fourier transforms.
J. Pierrus
- Published in print:
- 2018
- Published Online:
- October 2018
- ISBN:
- 9780198821915
- eISBN:
- 9780191861055
- Item type:
- chapter
- Publisher:
- Oxford University Press
- DOI:
- 10.1093/oso/9780198821915.003.0006
- Subject:
- Physics, Condensed Matter Physics / Materials
This chapter considers various simple dc and ac circuits which contain at least one active element (always a voltage source) and passive elements (resistors, capacitors and inductors) arranged in ...
More
This chapter considers various simple dc and ac circuits which contain at least one active element (always a voltage source) and passive elements (resistors, capacitors and inductors) arranged in different combinations to form a bilateral network. The notions of complex voltage, complex current and complex impedance are introduced and then used in the ensuing analysis. Some standard ‘network theorems’ including Kirchhoff’s rules, the delta-star transformation, Thevenin’s theorem and the superposition theorem are employed. Included in the questions are circuits involving bridges, filters, audio amplifiers and transformers. Important topics such as series and parallel resonance in LRC circuits are also considered along the way. Much of the laborious algebra involved in manipulating the complex quantities above is avoided by relegating this task to Mathematica.Less
This chapter considers various simple dc and ac circuits which contain at least one active element (always a voltage source) and passive elements (resistors, capacitors and inductors) arranged in different combinations to form a bilateral network. The notions of complex voltage, complex current and complex impedance are introduced and then used in the ensuing analysis. Some standard ‘network theorems’ including Kirchhoff’s rules, the delta-star transformation, Thevenin’s theorem and the superposition theorem are employed. Included in the questions are circuits involving bridges, filters, audio amplifiers and transformers. Important topics such as series and parallel resonance in LRC circuits are also considered along the way. Much of the laborious algebra involved in manipulating the complex quantities above is avoided by relegating this task to Mathematica.