Technological change at Platypus Rockshelter (KB:A70), southeast Queensland

Queensland Archaeological Research ◽

10.25120/qar.5.1988.160 ◽

1988 ◽

Vol 5 ◽

pp. 63-89 ◽

Cited By ~ 9

Author(s):

Peter Hiscock ◽

J. Hall

Keyword(s):

Technological Change ◽

Temporal Change ◽

Rate Of Change ◽

Long Term Changes ◽

Southeast Queensland

Platypus Rockshelter yielded a rich and varied assemblage of stone artefacts. In this paper we describe temporal change in the artefact assemblage and, by implication, prehistoric technology, concentrating particularly on the evidence for chert stoneworking. Readers are referred to accompanying papers by Hall et al (1988) and Hall and Hiscock (1988) in this volume of QAR for details of the stratigraphy and dating of the site. What is important to reiterate here is that the deposit provides a discontinuous sequence of occupation dating back to approximately 5300 years BP. This, plus the fact the radiocarbon samples were selected to date stratigraphic transition, means that the artefactual sequence is divided into a number of sharply-bounded analytical units, and change can be identified between but not within these units. The necessity for the cultural sequence to be subdivided in this way makes it likely that gradual changes in prehistory will be seen as episodic, and that each unit may be a compilation of a number of discrete occupation events (cf. Frankel 1988). Thus, while we employ strata as minimal units of comparison in the artefactual analysis, we make no assumptions about the uniformity within, and rate of change between, those units. The purpose of the paper is to characterize the long-term changes in the technology of the inhabitants of the site.

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Assessing the Rate of Shoreline Changes of Rameswaram Island, Tamilnadu, India, using MATLAB Component Runtime Utility & Digital Shoreline Analysis System

International Journal of Engineering and Advanced Technology - Regular Issue ◽

10.35940/ijeat.c5675.029320 ◽

2020 ◽

Vol 9 (3) ◽

pp. 3318-3321

Keyword(s):

High Water ◽

Field Investigation ◽

Rate Of Change ◽

Physical Parameters ◽

Geospatial Technology ◽

Water Line ◽

Digital Shoreline Analysis System ◽

Long Term Changes ◽

Analysis System

The Present study highlights the changes in the coastal tract of Rameswaram island located between the geometric location, latitude 9° 10' to 9° 20' N and the longitude 79° 12' to 79° 30' E. Using Geospatial Technology, Long-term changes have noticed from digitized shorelines taken from Landsat imageries and SOI toposheet for the years 1968, 1978, 1988, 1999, 2009 and 2018. Digital Shoreline Analysis System (DSAS) an extension provided by USGS for ArcGIS used to cast transects perpendicular from the baseline, towards the shorelines. High water Line (HTL) has taken as shoreline in this study. The distance between the shorelines has taken from the cast transects plotted from the baseline. For the rate of change calculation, MATLAB component runtime utility for ArcGIS has used. Based on the Linear Regression Rate (LRR) the shore has classified into High Erosion, Low Erosion, Stable and Low Accretion, High Accretion zones. The island has a shoreline length of 78.4 km, and the studies found that 27.83 km (35.41%) of shoreline is accreting nature, 37.90 km (48.21%) of shoreline is stable, and 12.86 km (16.36 %) of shoreline tends to erode. During the field investigation identified that High amount of erosion occurred in the locations near Pamban, Tharavaithopu and Dhanushkodi. Also, Accretion identified over the locations Ayyanthopu, Natarajapuram and Arichumanai tip. Wind action is one of the physical parameters that induced the erosion in some location of this study area.

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The Deskilling Thesis Revisited: On Peter Armstrong's Defence of Braverman

The Sociological Review ◽

10.1111/j.1467-954x.1995.tb00612.x ◽

1995 ◽

Vol 43 (3) ◽

pp. 478-500 ◽

Cited By ~ 1

Author(s):

Alan Lewis

Keyword(s):

Technological Change ◽

Work Skills ◽

Methodological Issues ◽

Short Term ◽

Skill Levels ◽

Long Term Changes ◽

Logical Nature ◽

Methodological Problems ◽

Disconfirming Evidence

Peter Armstrong's recent defence of Braverman's deskilling theory argues that most critics misinterpret its logical nature. Consequently, the bulk of empirical research indicating short term changes in skill levels cannot be accepted as disconfirming evidence. Armstrong's argument brings out some overlooked elements in the deskilling thesis and points out important limitations of the studies critical of it. At the same time, Armstrong's clarification of the character of Braverman's theory also exposes some of the problems in the deskilling thesis itself. Armstrong correctly points out the long term, tendential character of the theory but fails to confront some central methodological problems in the study of long term shifts in work skills. This paper looks at three issues which Armstrong's argument raises: i) the nature of a ‘law of motion’ which is claimed to be the logical status of the theory; ii) Braverman's very specific notion of skill; iii) the methodological issues associated with analysis of long term changes in skills. Additionally, I explore the issue of technological change which, I argue, constitutes a ‘relatively autonomous’ source of constraints and pressures on capitalism management, not to be treated as a weapon or outcome in management's struggles to control labour.

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Assessing Renewable Resources at the Saronikos Gulf for the Development of Multi-Generation Renewable Systems

Sustainability ◽

10.3390/su12219169 ◽

2020 ◽

Vol 12 (21) ◽

pp. 9169

Author(s):

George Lavidas ◽

John K. Kaldellis

Keyword(s):

Solar Wind ◽

Renewable Resources ◽

Energy Transition ◽

Power Production ◽

Energy System ◽

Rate Of Change ◽

Long Term Changes ◽

Wind Resources ◽

Available Resources

Decarbonisation of any energy system implies that more renewables will have to be incorporated into the grid. This requires a thorough assessment of available resources to properly estimate potential contributions and identify opportunities. This work focuses on the Saronikos Gulf, which is part of the most crowded urban coastline in Greece. Solar, wind and wave resources are analysed, and the long-term characteristics affecting power production are discussed. Solar resources provide ≥250 Wh·m−2 with small long-term changes. Wind resources at coastal and onshore regions are ≥50 W·m−2; however, it has higher annual volatility. Finally, the wave resources of the region are from 130 to 170 W/m with a positive resource rate of change ≈2.5 W·m−1/year. It is expected that multi-generation by different resources, especially with temporal overlaps of wind and waves, will reduce intermittent production, hence accelerating the energy transition.

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