scholarly journals The significance of Levallois and discoidal technology in the Arcadia Valley, south central Queensland

2014 ◽  
Vol 17 ◽  
pp. 1 ◽  
Author(s):  
Grant W.G. Cochrane
Keyword(s):  
Formal Methods ◽  
Late Holocene ◽  
Flexible Structure ◽  
End Points ◽  
Reduction Processes ◽  
South Central ◽  
Reduction Strategies ◽  
Reduction Methods ◽  
The Subject ◽  
Core Reduction

<p>An analysis of stone artefacts from the Arcadia Valley in south central Queensland is used to develop a core reduction sequence model for the region. During the initial construction of this model, core types are identified that reflect phases or end points in reduction trajectories. The model shows that core reduction methods employed in the Arcadia Valley during the mid-to-late Holocene included Levallois, discoidal, prismatic and burin blade core methods, along with less formal reduction strategies. In recognition of the equifinality of many reduction processes, the model has a flexible structure. Hence the prevalence of the various core reduction methods, and their relationships to each other, may be the subject of a range of hypothetical scenarios which can be tested by employing multiple lines of additional evidence. Following this procedure, it is concluded that Levallois and discoidal methods may account for close to half of the artefact assemblage, while less formal methods were also very common.</p>

Alluvial fan depositional records from north and south-facing catchments in semi-arid montane terrain

2017 ◽  
Vol 89 (1) ◽  
pp. 237-253 ◽  
Author(s):  
Michael J. Poulos ◽  
Jennifer L. Pierce
Keyword(s):  
Late Holocene ◽  
Source Area ◽  
Alluvial Fan ◽  
Potential Bias ◽  
Landform Evolution ◽  
Sediment Yields ◽  
Erosion Rates ◽  
South Central ◽  
Valley Incision ◽  
North And South

AbstractValley asymmetry reflects differences in landform evolution with aspect; however, few studies assess rates and timing of asymmetric erosion. In south-central Idaho, we combine alluvial fan volume reconstructions with radiocarbon deposit dating to compare the source-catchment normalized fan deposition rates of catchments incised into north (n=5) and south-facing (n=3) valleys, which differ during the late Holocene from 7.7 to 10.1 mm/ka, respectively, but are not significantly different. South-facing catchments produced 1.3× more fan sediment per unit source-area during the late Holocene, whereas over the last 10 Ma they have evolved to be 2.1× larger with 2.8× greater eroded volumes and 7.6° gentler slopes (24.5° versus 32.1°, average). Late Holocene differences in sediment yields with aspect cannot fully explain differences in landforms. Potential bias in sediment deposition and/or remobilization cannot fully explain the similarity of erosion rates during the late Holocene. Valley asymmetry appears to have developed primarily during different conditions. While valley asymmetry development may be quicker during glacial climates, development is likely accelerated early in a valley’s history, such as during initial valley incision, because asymmetric degradation serves as a negative feedback that reduces aspect-related differences in erosion and drives valleys towards steady state.

Mid- to Late Holocene shoreline reconstruction and human occupation in Ancient Eretria (South Central Euboea, Greece)

Geomorphology ◽  
2014 ◽  
Vol 208 ◽  
pp. 225-237 ◽  
Author(s):  
Matthieu Ghilardi ◽  
David Psomiadis ◽  
Kosmas Pavlopoulos ◽  
Sylvie Müller Çelka ◽  
Sylvian Fachard ◽  
...  
Keyword(s):  
Late Holocene ◽  
Human Occupation ◽  
South Central

scholarly journals An 850 year record of climate and fluctuations of the iceberg-calving Nellie Juan Glacier, south central Alaska, U.S.A.

2003 ◽  
Vol 36 ◽  
pp. 51-56 ◽  
Author(s):  
David J. Barclay ◽  
Gregory C. Wiles ◽  
Parker E. Calkin
Keyword(s):  
Tree Ring ◽  
Late Holocene ◽  
Ring Width ◽  
Tree Ring Width ◽  
Terminal Moraine ◽  
Glacier System ◽  
South Central ◽  
Iceberg Calving ◽  
Paleoclimate Records ◽  
The 19Th Century

AbstractTree-ring cross-dates of 46 glacially killed trees show that the tidewater Nellie Juan Glacier, Alaska, advanced seaward during the 16th and 17th centuries AD. Ice-scarred trees at the late-Holocene end moraine indicate that the terminus was at its recent maximum from 1842 to 1893. Historical observations and photographs show that subsequent slow retreat changed to rapid iceberg-calving retreat after 1935, and that the tidewater terminus had withdrawn about 3.3 km from the late-Holocene maximum by 1992. Comparison with paleoclimate records from nearby land-terminating glaciers and an 850 year tree-ring-width chronology indicates that the timing of the 19th-century maximum stand of Nellie Juan Glacier was controlled by changes in summer temperature and radiation. However, rapid iceberg-calving retreat did not begin until 40 years of slow retreat had brought the tidewater terminus back from the terminal moraine shoal. Therefore, both the dimensions of the terminal moraine shoal and the magnitude and duration of climate change were important in initiating rapid retreat of this tidewater glacier system.

scholarly journals Communication Strategies Used by Teacher

2020 ◽  
Vol 3 (2) ◽  
pp. 274-286
Author(s):  
Darman Pangaribuan ◽  
Stefani Agustina ◽  
Anggie Pratiwi ◽  
Elfian Manalu ◽  
Yenita br Sembiring
Keyword(s):  
Teaching And Learning ◽  
Communication Strategies ◽  
Classroom Interaction ◽  
Learning Activity ◽  
English Teacher ◽  
Classroom Discourse Analysis ◽  
Reduction Strategies ◽  
The Subject ◽  
Teaching Learning ◽  
Achievement Strategies

This thesis was aimed to find teacher communication strategies during classroom interaction. This research was conducted in SMP SWASTA Brigjend Katamso 1 Medan. The subject of this research was the English Teacher. We used a qualitative approach, more specifically classroom discourse analysis, in analyzing this study since the source of the data were communication strategies which are used by an English teacher in communicating with her students during an English teaching-learning activity. We took the data by recording 90 minutes of English Lessons. We used Faerch and Kasper as a framework for this data analysis, for the reason of its specification and newness. The result showed that the five strategies used were repetition. From those strategies, code-switching was the strategy that was most frequently used by the teacher during the process of teaching and learning. The teacher`s reasons for applying those communication strategies were to overcome the communication barriers that occur between the teacher and the students to help the students understand and memorize the material more accessible. The result of the interview also showed that the students had a good perception of the implementation of communication strategies used by the teacher in the classroom. Keywords: Achievement strategies, Communication strategies, Reduction strategies, Teacher

scholarly journals The problem of fear in TQM – causes, consequences and reduction methods – a literature review

2020 ◽  
Vol 32 (6) ◽  
pp. 1217-1239
Author(s):  
Marek Bugdol
Keyword(s):  
Systematic Review ◽  
Quality Management ◽  
Primary Objective ◽  
Forming Process ◽  
Content Type ◽  
Team Members ◽  
Main Research ◽  
Reduction Methods ◽  
The Subject ◽  
Selection Of

PurposeThe primary objective of the paper is to present the role and meaning of fear in organizations implementing TQM. The author's intention is to identify the causes of fear in the TQM components as well as the main types of fear, their causes, consequences and methods of reduction.Design/methodology/approachThe main research method applied is a systematic review of the literature on the subject. The applied systematic review procedure takes into consideration the indicated research objective, the selection of the basic literature and publications, the presentation of the publication database and content analysis. The author also makes use of his own observations ensuing from his acting in the capacity of a TQM consultant and a juror of the Polish Quality Award.FindingsThe paper presents the causes of fear in the TQM components, the main types of fear and its consequences. The limited possibilities of eliminating fear are also indicated. Fear appears when, for various reasons, TQM is improperly implemented and maintained, but also when resources are allocated incorrectly (e.g. a wrong selection of quality team members), and it is included in social processes (e.g. in the quality team forming process). It appears when only structural empowerment rather than mental empowerment is applied, when there exist contradictory expectations with regard to empowerment, in case of excessive and/or “have to” commitment in particular employees, and when too much emphasis is placed on commitment.Research limitations/implicationsThe reflections included in the paper may become useful for quality management practitioners, as such knowledge allows them to avoid mistakes which are the cause of fear, that is an emotion making quality improvement difficult. The paper does not present the manifestations and sources of fear in all TQM components, and they are certainly included in a broadly understood quality culture. Nevertheless, the gathered and arranged knowledge can be the source of further research.Originality/valueBeing the result of the studies of the literature on the subject, this paper is one of few publications discussing in a detailed manner one of the principles of effective quality management formulated by E. Deming, namely “driving fear out”.

High-Integrity Model-Based Development

2015 ◽  
pp. 479-499
Author(s):  
K. Lano ◽  
S. Kolahdouz-Rahimi
Keyword(s):  
Formal Verification ◽  
Formal Methods ◽  
Model Transformations ◽  
Critical Systems ◽  
Model Based ◽  
The Subject ◽  
High Integrity

Model-Based Development (MBD) has become increasingly used for critical systems, and it is the subject of the MBDV supplement to the DO-178C standard. In this chapter, the authors review the requirements of DO-178C for model-based development, and they identify ways in which MBD can be combined with formal verification to achieve DO-178C requirements for traceability and verifiability of models. In particular, the authors consider the implications for model transformations, which are a central part of MBD approaches, and they identify how transformations can be verified using formal methods tools.

Pre-test assessment

2021 ◽  
pp. 7-12
Author(s):  
William J.M. Kinnear ◽  
James H. Hull
Keyword(s):  
Heart Disease ◽  
Side Effects ◽  
Exercise Test ◽  
Cardiopulmonary Exercise Test ◽  
End Points ◽  
Cardiopulmonary Exercise ◽  
Test Assessment ◽  
Viral Illness ◽  
The Subject ◽  
Electrocardiogram Ecg

Pre-test assessment describes the next step after deciding to do a cardiopulmonary exercise test (CPET). The indication for the test must be defined, with clear end points. A CPET is a very safe test. There are well-defined conditions which increase the risk. The most serious side effects are related to heart problems, most commonly seen in subjects with unstable heart disease. Careful scrutiny of the resting electrocardiogram (ECG) is imperative prior to the test. If the subject is unwell, e.g. with a viral illness or an exacerbation of asthma, the test should be postponed. On the day of the test, the subject should take their usual medication. Caffeine and alcohol should be avoided on the day of a CPET. A light meal should be taken at least 30 minutes beforehand.

The tephra stratigraphy of two lakes in south-central British Columbia, Canada and its implications for mid-late Holocene volcanic activity at Glacier Peak and Mount St. Helens, Washington, USA

2004 ◽  
Vol 41 (12) ◽  
pp. 1401-1410 ◽  
Author(s):  
Franklin F Foit Jr. ◽  
Daniel G Gavin ◽  
Feng Sheng Hu
Keyword(s):  
British Columbia ◽  
Late Holocene ◽  
Glass Composition ◽  
Apparent Absence ◽  
The North ◽  
South Central ◽  
Tephra Layers ◽  
Tephra Stratigraphy ◽  
Eruptive Period ◽  
Mount St Helens

Several mid-late Holocene Glacier Peak tephras along with Mazama and Mount St. Helens Wn and P tephras were found in cores from Cooley and Rockslide lakes in southeastern British Columbia, ∼300 km northeast of Glacier Peak. The sediments in Cooley Lake host the late Holocene Glacier Peak A tephra (2010 calibrated (cal) years BP), four separate Glacier Peak Dusty Creek (GPDC) tephras (5780–5830 cal years BP), and a Glacier Peak set D tephra (6060 cal years BP). This is the first report of Glacier Peak A and D tephras in British Columbia. The A tephra has been correlated on the basis of glass composition and age to a late Holocene Glacier Peak tephra in the sediments of Big Twin Lake, 75 km northeast of Glacier Peak. The glasses in the four GPDC tephra layers from Cooley Lake are compositionally indistinguishable from those in Mount Barr Cirque and Frozen lakes in southwestern British Columbia. The layers likely represent four eruptions taking place over 50 years. Although set D tephra has not been correlated to a known proximal or distal deposit, its glass bears the Glacier Peak glass compositional signature and its interpolated age corresponds to the initiation of the set D eruptive period. The presence of GPDC tephra in lake sediments across southern British Columbia suggests a broad plume trajectory to the north and northeast, whereas the apparent absence of the A and D tephras in all but Cooley Lake suggest plumes with a northeasterly direction.

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