title: An Examination of the Effects of Videophones on Driving and Conversation Performance

authors: Mackenzie, Kathryn Julie

subjects: cell phones

abstract: Research has conclusively shown that cell phones have a detrimental effect on driving performance. In an attempt to understand why, a handful of researchers have investigated the differences between cell phone and passenger conversations, with several of these studies revealing that the distraction caused by concurrent cell phone conversations noticeably outweighs that imposed by passenger conversations. One study suggested that the availability of visual cues during a passenger conversation may be an important factor contributing to this reduced level of distraction. The focus of this research project was to test whether providing drivers and remote conversers with access to visual cues via a videophone would result in improved driving performance when compared to a concurrent cell phone conversation. An initial experiment, in which 24 drivers encountered five hazards on a simulated road while conversing with a passenger, cell phone caller, videophone caller, or driving without conversation, resulted in driving behaviour that did not appear to be an accurate representation of real-world driving behaviour, which resulted in the early termination of this experiment. A second revised experiment, in which novice and practiced drivers drove a shortened version of the simulated road once under each of the aforementioned conversation conditions, produced more normal behaviour but failed to reveal any significant differences in driving or conversation performance as a result of concurrent videophone conversation compared to cell phone conversation. However, the results did reveal a number of other findings that may aid in understanding the distracting effects of cell phones, one of which was that remote conversations may result in an overestimation or underestimation of the correct driving response depending on the nature of the driving situation.

text: An Examination of the Effects of Videophones on Driving and Conversation Performance Research has conclusively shown that cell phones have a detrimental effect on driving performance. In an attempt to understand why, a handful of researchers have investigated the differences between cell phone and passenger conversations, with several of these studies revealing that the distraction caused by concurrent cell phone conversations noticeably outweighs that imposed by passenger conversations. One study suggested that the availability of visual cues during a passenger conversation may be an important factor contributing to this reduced level of distraction. The focus of this research project was to test whether providing drivers and remote conversers with access to visual cues via a videophone would result in improved driving performance when compared to a concurrent cell phone conversation. An initial experiment, in which 24 drivers encountered five hazards on a simulated road while conversing with a passenger, cell phone caller, videophone caller, or driving without conversation, resulted in driving behaviour that did not appear to be an accurate representation of real-world driving behaviour, which resulted in the early termination of this experiment. A second revised experiment, in which novice and practiced drivers drove a shortened version of the simulated road once under each of the aforementioned conversation conditions, produced more normal behaviour but failed to reveal any significant differences in driving or conversation performance as a result of concurrent videophone conversation compared to cell phone conversation. However, the results did reveal a number of other findings that may aid in understanding the distracting effects of cell phones, one of which was that remote conversations may result in an overestimation or underestimation of the correct driving response depending on the nature of the driving situation.

year: 2011

title: An Integrated Stratigraphy of Tauranga Harbour

authors: MacPherson, David

subjects: Tauranga

abstract: Tauranga Basin is a Quaternary basin filled with successions of terrestrial and coastal sediments. The largest feature of Tauranga Basin is Tauranga Harbour, a 570km2 estuary. This is home to the Port of Tauranga, New Zealands largest export port. Studies conducted following an initial study by Davis and Healy (1993) have found complex distributions of the sediments within the dredged shipping channel. This research used 86 vibracores and limited seismic data to identify four main facies within the shallow subsurface of the dredged channel and establish their distribution.
Four facies were identified within the shallow subsurface: the Volcanic Sand facies, a silt to fine sand volcaniclastic succession; the Silt facies, a silt to very fine sand lacustrine deposit; the Coastal Sands facies, a medium to coarse coastal sand deposit; and the Pumiceous Sand Facies, a medium to coarse sand succession with abundant pumice.

Within the dredged shipping channel, the Volcanic Sands and Silt facies outcrop at the surface, and appear as ridges in the subsurface. Draped over these ridges is the Coastal Sands facies, which in some cores is overlain by Pumiceous Sands. The Volcanic Sands facies represents a succession of tephra deposits, with some reworking between depositional events. In the Maunganui Roads region of the harbour this is overlain by the lacustrine Silt facies, formed from the reworking of the Volcanic Sands. The region was then inundated by the Holocene marine transgression, leading to the deposition of the Coastal Sands facies, sourced from offshore. This Coastal Sands facies is then overlain in areas by Pumiceous Sands, small mobile sand waves that exist within the shipping channel. These are formed following the erosion of ignimbrite cliffs around the harbour, with some input from the outside the harbour. This represents a change in source for sedimentation in the harbour.

An updated model of the paleogeographic development of the harbour is presented, using data from this and other studies. This model shows the presence of a braided river flowing through Stella Passage, before the development of a lake and the subsequent Holocene marine transgression leading to the evolution of the sand spit and Matakana barrier island.

text: An Integrated Stratigraphy of Tauranga Harbour Tauranga Basin is a Quaternary basin filled with successions of terrestrial and coastal sediments. The largest feature of Tauranga Basin is Tauranga Harbour, a 570km2 estuary. This is home to the Port of Tauranga, New Zealands largest export port. Studies conducted following an initial study by Davis and Healy (1993) have found complex distributions of the sediments within the dredged shipping channel. This research used 86 vibracores and limited seismic data to identify four main facies within the shallow subsurface of the dredged channel and establish their distribution.
Four facies were identified within the shallow subsurface: the Volcanic Sand facies, a silt to fine sand volcaniclastic succession; the Silt facies, a silt to very fine sand lacustrine deposit; the Coastal Sands facies, a medium to coarse coastal sand deposit; and the Pumiceous Sand Facies, a medium to coarse sand succession with abundant pumice.

Within the dredged shipping channel, the Volcanic Sands and Silt facies outcrop at the surface, and appear as ridges in the subsurface. Draped over these ridges is the Coastal Sands facies, which in some cores is overlain by Pumiceous Sands. The Volcanic Sands facies represents a succession of tephra deposits, with some reworking between depositional events. In the Maunganui Roads region of the harbour this is overlain by the lacustrine Silt facies, formed from the reworking of the Volcanic Sands. The region was then inundated by the Holocene marine transgression, leading to the deposition of the Coastal Sands facies, sourced from offshore. This Coastal Sands facies is then overlain in areas by Pumiceous Sands, small mobile sand waves that exist within the shipping channel. These are formed following the erosion of ignimbrite cliffs around the harbour, with some input from the outside the harbour. This represents a change in source for sedimentation in the harbour.

An updated model of the paleogeographic development of the harbour is presented, using data from this and other studies. This model shows the presence of a braided river flowing through Stella Passage, before the development of a lake and the subsequent Holocene marine transgression leading to the evolution of the sand spit and Matakana barrier island.

year: 2016

title: Claiming Spaces: Proceedings of the 2007 National Maori and Pacific Psychologies Symposium 23rd-24th November 2007

authors: Levy, Michelle Patricia

subjects: Maori

abstract: This is the full conference proceedings of Claiming Spaces: Proceedings of the 2007 National Maori and Pacific Psychologies Symposium 23rd-24th November 2007.

text: Claiming Spaces: Proceedings of the 2007 National Maori and Pacific Psychologies Symposium 23rd-24th November 2007 This is the full conference proceedings of Claiming Spaces: Proceedings of the 2007 National Maori and Pacific Psychologies Symposium 23rd-24th November 2007.

year: 2008