144 research outputs found
The Literary Works of Jack B. Yeats
Victor Waddington, who wrote the above, was Jack Yeats' dealer for many years. He was therefore well placed to understand Yeats' relationship with the buying public, and his "considered opinion" has to be taken seriously. Being "full of deception" does not mean that he was positively deceiving people (Waddingtom made that clear), but it certainly implies the more negative quality of deceptiveness, just as distances are deceptive in a mist. The trouble is that Yeats' literary works have thoroughly deceived his commentators and the question arises as to whether the mist is of his own creating, or simply the result of our not having wiped our spectacles
The Benefits of Laser Scanning & 3D Modelling in Accident Investigation: In a Mining Context
PublishedArticleThis is the author’s final accepted version of the article: M. L. Eyre, P. J. Foster, J. Jobling-Purser and J. Coggan. "The benefits of laser scanning and 3D modelling in accident investigation: in a mining context." Mining Technology 2015; 124(2), 73-77. DOI: 10.1179/1743286315Y.0000000004Accurate reconstruction of the facts and causes surrounding accidents is critical if the mining
industry is to learn from incidents and prevent future events. Effective accident investigation and
training are essential in order to accomplish this, while providing a record of the incident in order
to help in explaining the situation to people unconnected to the event itself. Over a number of
years there have been considerable innovations in survey instrumentation and software used to
record data. However, the final deliverable data has remained the same, with surveyors tasked to
represent a 3D environment using 2D deliverables. This paper explores the benefits that can be
obtained using 3D data capture and representation with regard to accident investigation with
discussion on accuracy, time, witness verification and reduction in human error
Ionised jets associated with massive young stellar objects
This thesis focuses on the phenomena of ionised jets associated with massive young stellar objects. Firstly a study was conducted with the aim to establish a statistical sample of such objects. Radio observations towards a sample of 49 MYSOs resulted in the detection of 28 objects classified as ionised jets. The jets' radio luminosities scaled with their MYSOs' bolometric luminosities in the same way as for low-mass examples. This infers that the jet launching and collimation mechanisms of high-mass jets are very similar to that in their low-mass counterparts and they are ejected for the last <65000yr of the MYSO phase. Interestingly non-thermal emission was regularly detected towards spatially distinct radio lobes (associated with 50% of the jets), suggesting the presence of synchrotron emission and therefore, magnetic fields. With an average spectral index of -0.55 (indicative of the 1st order Fermi acceleration mechanism) it is concluded these lobes are the result of shocks in the jets' stream.
My second science chapter is a study of radio variability, precession and proper motions towards a subset of objects from the first chapter. Over a two year time period, no significant variability and only one example of proper motion (1800+/-600 km/s) was detected. Precession was found to be commonplace however and if it arises as the result of binary interactions, we infer orbital radii between 30 and 1800 au for the binary companions.
Lastly, high-resolution, VLA observations at C and Q-bands were analysed to extend the known sample of MYSOs harbouring ionised jets into the northern hemisphere. Only 3 radio sources were detected possessing jet-like characteristics towards the work's sub-sample of 8 IRDCs containing 44 mm-cores (in our field of view), highlighting the radio-quiet (>30 microJy) nature of this early phase in massive star formation. Towards the RMS survey derived sample of 48 MYSOs, a total of 38 radio sources with jet-like characteristics were detected, of which 14 were bona-fide jets (10 of which were associated with shock-ionised lobes). Comparing the analysis of the MYSO sample to statistical surveys of molecular outflows, it was inferred from their total momenta that the jets alone are mechanically capable of entraining the outflows. Measurement of the physical extent of the radio emission showed no evolution of the opening angle with bolometric luminosity, and that a trapped HII region alone was not enough to explain the radio emission. Most interestingly, jets associated with shock ionised lobes were found to occupy later evolutionary IR colours than those without, suggesting them to be an evolutionary stage in ionised jet, and MYSO, evolution
Dallas Bower: a producer for television's early years, 1936-39
Having worked in the film industry as a sound technician and then director, Dallas Bower (1907-99) was appointed in 1936 as one of two senior producers at the start of the BBC Television service. Over the next three years Bower produced as well as directed many ground-breaking live programmes, including the opening-day broadcast on 2 November 1936; the BBC Television Demonstration Film (1937, his only surviving pre-war production); a modern-dress Julius Caesar (1938), in uniforms suggestive of a Fascist disctatorship; Act II of Tristan and Isolde (1938); Patrick Hamilton’s play Rope (1939), utilising extended single camera-shots camera-shots; numerous ballets, among them Checkmate (1938); and ambitious outside broadcasts from the film studios at Denham and Pinewood.
Developing the working practices of producing for the theatre, film industry and radio, Bower was a key figure in defining the role of the creative television producer at the start of the medium. Among his innovations, according to his unpublished autobiographical fragment ‘Playback’ (written 1995), was the introduction of a drawn studio plan for the four cameras employed in all live broadcasts from Alexandra Palace.
Using Bower’s writings (among them his 1936 book Plan for Cinema), his BECTU History Project interview, the BBC Written Archives and contemporary industry coverage, this article reconstructs the early development of the role of staff television producer in order to consider the questions of autonomy, agency and institutional constraints at the BBC in the pre-war years
Climate Change: Scenarios & Impacts for Ireland (2000-LS-5.2.1-M1) ISBN:1-84095-115-X
The Third Assessment Report of the Intergovernmental
Panel on Climate Change (IPCC, 2001) is the most
authoritative assessment of global climate change to date.
Produced by several hundred leading scientists in various
areas of climate studies, its principal conclusions include
the following:
• Global average temperature has increased by
0.6 ± 0.2°C since 1860 with accelerated warming
apparent in the latter decades of the 20th century. A
further increase of 1.5–6.0°C from 1990 to 2100 is
projected, depending on how emissions of
greenhouse gases increase over the period.
• The 20th century was the warmest of the last
millennium in the Northern Hemisphere, with the
1990s being the warmest decade and 1998 the
warmest year. Warming has been more pronounced
at night than during the day.
• Reductions in the extent of snow cover of 10% have
occurred in the past 40 years, with a widespread
retreat also of mountain glaciers outside the polar
regions. Sea-ice thickness in the Arctic has declined
by about 40% during late summer/early autumn,
though no comparable reduction has taken place in
winter. In the Antarctic, no similar trends have been
observed. One of the most serious impacts on global
sea level could result from a catastrophic failure of
grounded ice in West Antarctica. This is, however,
considered unlikely over the coming century.
• Global sea level has risen by 0.1–0.2 m over the past
century, an order of magnitude larger than the
average rate over the past three millennia. A rise of
approximately 0.5 m is considered likely during the
period 1990–2100.
• Precipitation has increased over the land masses of
the temperate regions by 0.5–1.0% per decade.
Frequencies of more intense rainfall events appear to
be increasing also in the Northern Hemisphere. In
contrast, decreases in rainfall over the tropics have
been observed, though this trend has weakened in
recent years. More frequent warm-phase El Niño
events are occurring in the Pacific Basin.
Precipitation increases are projected, particularly for
winter, for middle and high latitudes in the Northern
Hemisphere and for Antarctica.
• No significant trends in the tropical cyclone
climatology have been detected.
These global trends have implications for the future
course of Ireland’s climate which it is judicious to
anticipate. This report presents an assessment of the
magnitude and likely impacts of climate change in
Ireland over the course of the current century. It
approaches this by establishing scenarios for future Irish
climate based on global climate model projections for the
middle and last quarter of the present century. These
projections are then used to assess probable impacts in
key sectors such as agriculture, forestry, water resources,
the coastal and marine environments and on biodiversity.
The purpose of the report is to firstly identify where
vulnerability to climate change exists in Ireland and what
adjustments are likely in the operation of environmental
systems in response to such changes. In some sectors, e.g.
agriculture, some new opportunities may arise. In other
instances, e.g. water resource management, long-term
planning strategies will be necessary to mitigate adverse
impacts. Long lead times for adjustment characterise
many sectors, e.g. forestry, and it is important to provide
as much advance warning of likely changes as possible to
enable adaptation to commence early. By anticipating
change it may be possible to minimise adverse impacts
and to maximise positive aspects of global climate
change
Climate Change: Scenarios & Impacts for Ireland (2000-LS-5.2.1-M1) ISBN:1-84095-115-X
The Third Assessment Report of the Intergovernmental
Panel on Climate Change (IPCC, 2001) is the most
authoritative assessment of global climate change to date.
Produced by several hundred leading scientists in various
areas of climate studies, its principal conclusions include
the following:
• Global average temperature has increased by
0.6 ± 0.2°C since 1860 with accelerated warming
apparent in the latter decades of the 20th century. A
further increase of 1.5–6.0°C from 1990 to 2100 is
projected, depending on how emissions of
greenhouse gases increase over the period.
• The 20th century was the warmest of the last
millennium in the Northern Hemisphere, with the
1990s being the warmest decade and 1998 the
warmest year. Warming has been more pronounced
at night than during the day.
• Reductions in the extent of snow cover of 10% have
occurred in the past 40 years, with a widespread
retreat also of mountain glaciers outside the polar
regions. Sea-ice thickness in the Arctic has declined
by about 40% during late summer/early autumn,
though no comparable reduction has taken place in
winter. In the Antarctic, no similar trends have been
observed. One of the most serious impacts on global
sea level could result from a catastrophic failure of
grounded ice in West Antarctica. This is, however,
considered unlikely over the coming century.
• Global sea level has risen by 0.1–0.2 m over the past
century, an order of magnitude larger than the
average rate over the past three millennia. A rise of
approximately 0.5 m is considered likely during the
period 1990–2100.
• Precipitation has increased over the land masses of
the temperate regions by 0.5–1.0% per decade.
Frequencies of more intense rainfall events appear to
be increasing also in the Northern Hemisphere. In
contrast, decreases in rainfall over the tropics have
been observed, though this trend has weakened in
recent years. More frequent warm-phase El Niño
events are occurring in the Pacific Basin.
Precipitation increases are projected, particularly for
winter, for middle and high latitudes in the Northern
Hemisphere and for Antarctica.
• No significant trends in the tropical cyclone
climatology have been detected.
These global trends have implications for the future
course of Ireland’s climate which it is judicious to
anticipate. This report presents an assessment of the
magnitude and likely impacts of climate change in
Ireland over the course of the current century. It
approaches this by establishing scenarios for future Irish
climate based on global climate model projections for the
middle and last quarter of the present century. These
projections are then used to assess probable impacts in
key sectors such as agriculture, forestry, water resources,
the coastal and marine environments and on biodiversity.
The purpose of the report is to firstly identify where
vulnerability to climate change exists in Ireland and what
adjustments are likely in the operation of environmental
systems in response to such changes. In some sectors, e.g.
agriculture, some new opportunities may arise. In other
instances, e.g. water resource management, long-term
planning strategies will be necessary to mitigate adverse
impacts. Long lead times for adjustment characterise
many sectors, e.g. forestry, and it is important to provide
as much advance warning of likely changes as possible to
enable adaptation to commence early. By anticipating
change it may be possible to minimise adverse impacts
and to maximise positive aspects of global climate
change
Climate Change: Scenarios & Impacts for Ireland (2000-LS-5.2.1-M1) ISBN:1-84095-115-X
The Third Assessment Report of the Intergovernmental
Panel on Climate Change (IPCC, 2001) is the most
authoritative assessment of global climate change to date.
Produced by several hundred leading scientists in various
areas of climate studies, its principal conclusions include
the following:
• Global average temperature has increased by
0.6 ± 0.2°C since 1860 with accelerated warming
apparent in the latter decades of the 20th century. A
further increase of 1.5–6.0°C from 1990 to 2100 is
projected, depending on how emissions of
greenhouse gases increase over the period.
• The 20th century was the warmest of the last
millennium in the Northern Hemisphere, with the
1990s being the warmest decade and 1998 the
warmest year. Warming has been more pronounced
at night than during the day.
• Reductions in the extent of snow cover of 10% have
occurred in the past 40 years, with a widespread
retreat also of mountain glaciers outside the polar
regions. Sea-ice thickness in the Arctic has declined
by about 40% during late summer/early autumn,
though no comparable reduction has taken place in
winter. In the Antarctic, no similar trends have been
observed. One of the most serious impacts on global
sea level could result from a catastrophic failure of
grounded ice in West Antarctica. This is, however,
considered unlikely over the coming century.
• Global sea level has risen by 0.1–0.2 m over the past
century, an order of magnitude larger than the
average rate over the past three millennia. A rise of
approximately 0.5 m is considered likely during the
period 1990–2100.
• Precipitation has increased over the land masses of
the temperate regions by 0.5–1.0% per decade.
Frequencies of more intense rainfall events appear to
be increasing also in the Northern Hemisphere. In
contrast, decreases in rainfall over the tropics have
been observed, though this trend has weakened in
recent years. More frequent warm-phase El Niño
events are occurring in the Pacific Basin.
Precipitation increases are projected, particularly for
winter, for middle and high latitudes in the Northern
Hemisphere and for Antarctica.
• No significant trends in the tropical cyclone
climatology have been detected.
These global trends have implications for the future
course of Ireland’s climate which it is judicious to
anticipate. This report presents an assessment of the
magnitude and likely impacts of climate change in
Ireland over the course of the current century. It
approaches this by establishing scenarios for future Irish
climate based on global climate model projections for the
middle and last quarter of the present century. These
projections are then used to assess probable impacts in
key sectors such as agriculture, forestry, water resources,
the coastal and marine environments and on biodiversity.
The purpose of the report is to firstly identify where
vulnerability to climate change exists in Ireland and what
adjustments are likely in the operation of environmental
systems in response to such changes. In some sectors, e.g.
agriculture, some new opportunities may arise. In other
instances, e.g. water resource management, long-term
planning strategies will be necessary to mitigate adverse
impacts. Long lead times for adjustment characterise
many sectors, e.g. forestry, and it is important to provide
as much advance warning of likely changes as possible to
enable adaptation to commence early. By anticipating
change it may be possible to minimise adverse impacts
and to maximise positive aspects of global climate
change
Climate Change: Scenarios & Impacts for Ireland (2000-LS-5.2.1-M1) ISBN:1-84095-115-X
The Third Assessment Report of the Intergovernmental
Panel on Climate Change (IPCC, 2001) is the most
authoritative assessment of global climate change to date.
Produced by several hundred leading scientists in various
areas of climate studies, its principal conclusions include
the following:
• Global average temperature has increased by
0.6 ± 0.2°C since 1860 with accelerated warming
apparent in the latter decades of the 20th century. A
further increase of 1.5–6.0°C from 1990 to 2100 is
projected, depending on how emissions of
greenhouse gases increase over the period.
• The 20th century was the warmest of the last
millennium in the Northern Hemisphere, with the
1990s being the warmest decade and 1998 the
warmest year. Warming has been more pronounced
at night than during the day.
• Reductions in the extent of snow cover of 10% have
occurred in the past 40 years, with a widespread
retreat also of mountain glaciers outside the polar
regions. Sea-ice thickness in the Arctic has declined
by about 40% during late summer/early autumn,
though no comparable reduction has taken place in
winter. In the Antarctic, no similar trends have been
observed. One of the most serious impacts on global
sea level could result from a catastrophic failure of
grounded ice in West Antarctica. This is, however,
considered unlikely over the coming century.
• Global sea level has risen by 0.1–0.2 m over the past
century, an order of magnitude larger than the
average rate over the past three millennia. A rise of
approximately 0.5 m is considered likely during the
period 1990–2100.
• Precipitation has increased over the land masses of
the temperate regions by 0.5–1.0% per decade.
Frequencies of more intense rainfall events appear to
be increasing also in the Northern Hemisphere. In
contrast, decreases in rainfall over the tropics have
been observed, though this trend has weakened in
recent years. More frequent warm-phase El Niño
events are occurring in the Pacific Basin.
Precipitation increases are projected, particularly for
winter, for middle and high latitudes in the Northern
Hemisphere and for Antarctica.
• No significant trends in the tropical cyclone
climatology have been detected.
These global trends have implications for the future
course of Ireland’s climate which it is judicious to
anticipate. This report presents an assessment of the
magnitude and likely impacts of climate change in
Ireland over the course of the current century. It
approaches this by establishing scenarios for future Irish
climate based on global climate model projections for the
middle and last quarter of the present century. These
projections are then used to assess probable impacts in
key sectors such as agriculture, forestry, water resources,
the coastal and marine environments and on biodiversity.
The purpose of the report is to firstly identify where
vulnerability to climate change exists in Ireland and what
adjustments are likely in the operation of environmental
systems in response to such changes. In some sectors, e.g.
agriculture, some new opportunities may arise. In other
instances, e.g. water resource management, long-term
planning strategies will be necessary to mitigate adverse
impacts. Long lead times for adjustment characterise
many sectors, e.g. forestry, and it is important to provide
as much advance warning of likely changes as possible to
enable adaptation to commence early. By anticipating
change it may be possible to minimise adverse impacts
and to maximise positive aspects of global climate
change
Climate Change: Scenarios & Impacts for Ireland (2000-LS-5.2.1-M1) ISBN:1-84095-115-X
The Third Assessment Report of the Intergovernmental
Panel on Climate Change (IPCC, 2001) is the most
authoritative assessment of global climate change to date.
Produced by several hundred leading scientists in various
areas of climate studies, its principal conclusions include
the following:
• Global average temperature has increased by
0.6 ± 0.2°C since 1860 with accelerated warming
apparent in the latter decades of the 20th century. A
further increase of 1.5–6.0°C from 1990 to 2100 is
projected, depending on how emissions of
greenhouse gases increase over the period.
• The 20th century was the warmest of the last
millennium in the Northern Hemisphere, with the
1990s being the warmest decade and 1998 the
warmest year. Warming has been more pronounced
at night than during the day.
• Reductions in the extent of snow cover of 10% have
occurred in the past 40 years, with a widespread
retreat also of mountain glaciers outside the polar
regions. Sea-ice thickness in the Arctic has declined
by about 40% during late summer/early autumn,
though no comparable reduction has taken place in
winter. In the Antarctic, no similar trends have been
observed. One of the most serious impacts on global
sea level could result from a catastrophic failure of
grounded ice in West Antarctica. This is, however,
considered unlikely over the coming century.
• Global sea level has risen by 0.1–0.2 m over the past
century, an order of magnitude larger than the
average rate over the past three millennia. A rise of
approximately 0.5 m is considered likely during the
period 1990–2100.
• Precipitation has increased over the land masses of
the temperate regions by 0.5–1.0% per decade.
Frequencies of more intense rainfall events appear to
be increasing also in the Northern Hemisphere. In
contrast, decreases in rainfall over the tropics have
been observed, though this trend has weakened in
recent years. More frequent warm-phase El Niño
events are occurring in the Pacific Basin.
Precipitation increases are projected, particularly for
winter, for middle and high latitudes in the Northern
Hemisphere and for Antarctica.
• No significant trends in the tropical cyclone
climatology have been detected.
These global trends have implications for the future
course of Ireland’s climate which it is judicious to
anticipate. This report presents an assessment of the
magnitude and likely impacts of climate change in
Ireland over the course of the current century. It
approaches this by establishing scenarios for future Irish
climate based on global climate model projections for the
middle and last quarter of the present century. These
projections are then used to assess probable impacts in
key sectors such as agriculture, forestry, water resources,
the coastal and marine environments and on biodiversity.
The purpose of the report is to firstly identify where
vulnerability to climate change exists in Ireland and what
adjustments are likely in the operation of environmental
systems in response to such changes. In some sectors, e.g.
agriculture, some new opportunities may arise. In other
instances, e.g. water resource management, long-term
planning strategies will be necessary to mitigate adverse
impacts. Long lead times for adjustment characterise
many sectors, e.g. forestry, and it is important to provide
as much advance warning of likely changes as possible to
enable adaptation to commence early. By anticipating
change it may be possible to minimise adverse impacts
and to maximise positive aspects of global climate
change
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