A 23,000-yr Pollen Record from Lake Euramoo, Wet Tropics of NE Queensland, Australia

2005 ◽  
Vol 64 (3) ◽  
pp. 343-356 ◽  
Author(s):  
Simon G. Haberle
Keyword(s):  
New Record ◽  
Vegetation Change ◽  
Fire History ◽  
World Heritage ◽  
Pollen Record ◽  
Orbital Forcing ◽  
Wet Tropics ◽  
The Relationship ◽  
Warm Temperate ◽  
Significant Factors

AbstractA new extended pollen and charcoal record is presented from Lake Euramoo, Wet Tropics World Heritage rainforest of northeast Queensland, Australia. The 8.4-m sediment core taken from the center of Lake Euramoo incorporates a complete record of vegetation change and fire history spanning the period from 23,000 cal yr B.P. to present. The pollen record is divided into five significant zones; 23,000–16,800 cal yr B.P., dry sclerophyll woodland; 16,800–8600 cal yr B.P., wet sclerophyll woodland with marginal rainforest in protected pockets; 8600–5000 cal yr B.P., warm temperate rainforest; 5000–70 cal yr B.P., dry subtropical rainforest; 70 cal yr B.P.–AD 1999, degraded dry subtropical rainforest with increasing influence of invasive species and fire.The process of rainforest development appears to be at least partly controlled by orbital forcing (precession), though more local environmental variables and human activity are also significant factors. This new record provides the opportunity to explore the relationship between fire, drought and rainforest dynamics in a significant World Heritage rainforest region.

A lake sediment–based paleoecological reconstruction of late Holocene fire history and vegetation change in Great Basin National Park, Nevada, USA

2021 ◽  
pp. 1-15
Author(s):  
Christopher S. Cooper ◽  
David F. Porinchu ◽  
Scott A. Reinemann ◽  
Bryan G. Mark ◽  
James Q. DeGrand
Keyword(s):  
Great Basin ◽  
Relative Abundance ◽  
Vegetation Change ◽  
Fire History ◽  
Ice Age ◽  
Sediment Geochemistry ◽  
Catchment Scale ◽  
Composition And Structure ◽  
Hydroclimate Variability ◽  
Late Fifteenth

Abstract Analyses of macroscopic charcoal, sediment geochemistry (%C, %N, C/N, δ13C, δ15N), and fossil pollen were conducted on a sediment core recovered from Stella Lake, Nevada, establishing a 2000 year record of fire history and vegetation change for the Great Basin. Charcoal accumulation rates (CHAR) indicate that fire activity, which was minimal from the beginning of the first millennium to AD 750, increased slightly at the onset of the Medieval Climate Anomaly (MCA). Observed changes in catchment vegetation were driven by hydroclimate variability during the early MCA. Two notable increases in CHAR, which occurred during the Little Ice Age (LIA), were identified as major fire events within the catchment. Increased C/N, enriched δ15N, and depleted δ13C values correspond with these events, providing additional evidence for the occurrence of catchment-scale fire events during the late fifteenth and late sixteenth centuries. Shifts in the vegetation community composition and structure accompanied these fires, with Pinus and Picea decreasing in relative abundance and Poaceae increasing in relative abundance following the fire events. During the LIA, the vegetation change and lacustrine geochemical response was most directly influenced by the occurrence of catchment-scale fires, not regional hydroclimate.

scholarly journals Surface Sediment Diatom Assemblages Response to Water Environment in Dongping Lake, North China

Water ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 339
Author(s):  
Shuangshuang Liu ◽  
Min Yao ◽  
Shiyue Chen ◽  
Xingzhong Yuan
Keyword(s):  
Environmental Factors ◽  
Water Environment ◽  
Oxygen Demand ◽  
Diatom Assemblages ◽  
Multivariate Statistical ◽  
Dongping Lake ◽  
Autumn And Winter ◽  
Response To Water ◽  
The Relationship ◽  
Significant Factors

The relationship between the diatom taxa preserved in surface lake sediments and environmental variables in Dongping Lake was explored using multivariate statistical methods. The statistical analysis showed that the lake was eutrophicated in all seasons. Transparency, chlorophyll a (Chla) and total phosphorus (TP) were the dominant environmental factors in spring and summer, and NH4+-N and chemical oxygen demand (COD) were the dominant environmental factors in autumn and winter. Sixteen genera and 43 species of diatom were found in the surface sediments, and the dominant diatom genera were Aulacoseira, Ulnaria, Cyclotella, Navicula and Fragilaria. A redundancy analysis (RDA) and Monte Carlo permutation 20 test revealed that COD, pH, TP, conductivity and transparency were significant factors influencing diatom assemblage change, meaning that the distribution of the diatom assemblages were mostly influenced by nutrient composition, light intensity and ion concentrations.

Author–Screenwriter– Director (1930s–1950s): Articulating Authorship Through Self-Adaptations and Film Novelisations in Bengali

2021 ◽  
pp. 097492762098395
Author(s):  
Priyanjali Sen
Keyword(s):  
Literary Works ◽  
Bengali Literature ◽  
The Relationship ◽  
Literature And Film ◽  
Film And Literature ◽  
Significant Factors

During the 1930s, one of the significant factors that strengthened the connection between Bengali literature and film was the emergence of certain key figures who straddled overlapping roles as author–screenwriter–director, frequently adapting their own literary works and reframing the contentious ‘authorship issue’ that arises between writer and filmmaker. By focusing on three such figures—Premankur Atorthy (1890–1964), Sailajananda Mukhopadhyay (1901–1976) and Premendra Mitra (1904–1988)—this essay examines the manner in which self-adaptations served to transfer the power of the literary author to the nascent cinematic auteur, particularly through the intermediary process of screenwriting. The essay also draws attention to the practice of film novelisations that was mobilised since the mid-1940s by Mitra and others like Jyotirmoy Roy and Panchugopal Mukhopadhyay, where novels were written based on cinematic works, akin to French cinéromans and contrary to ‘authorless’ novelisations by ghostwriters. In subsequent years, film novels were written by director Hemen Gupta, writers Tarashankar Bandopadhyay, Shaktipada Rajguru and Kalkut, which brings to light a largely unexplored dimension of the relationship between Bengali film and literature.

scholarly journals Spatial Variation of the Relationship between PM2.5Concentrations and Meteorological Parameters in China

2015 ◽  
Vol 2015 ◽  
pp. 1-15 ◽  
Author(s):  
Gang Lin ◽  
Jingying Fu ◽  
Dong Jiang ◽  
Jianhua Wang ◽  
Qiao Wang ◽  
...  
Keyword(s):  
Negative Correlation ◽  
Meteorological Parameters ◽  
Semiarid Region ◽  
Strong Positive Correlation ◽  
Annual Average ◽  
Strong Negative Correlation ◽  
Positive Correlation ◽  
Humid Region ◽  
The Relationship ◽  
Warm Temperate

Epidemiological studies around the world have reported that fine particulate matter (PM2.5) is closely associated with human health. The distribution of PM2.5concentrations is influenced by multiple geographic and socioeconomic factors. Using a remote-sensing-derived PM2.5dataset, this paper explores the relationship between PM2.5concentrations and meteorological parameters and their spatial variance in China for the period 2001–2010. The spatial variations of the relationships between the annual average PM2.5, the annual average precipitation (AAP), and the annual average temperature (AAT) were evaluated using the Geographically Weighted Regression (GWR) model. The results indicated that PM2.5had a strong and stable correlation with meteorological parameters. In particular, PM2.5had a negative correlation with precipitation and a positive correlation with temperature. In addition, the relationship between the variables changed over space, and the strong negative correlation between PM2.5and the AAP mainly appeared in the warm temperate semihumid region and northern subtropical humid region in 2001 and 2010, with some localized differences. The strong positive correlation between the PM2.5and the AAT mainly occurred in the mid-temperate semiarid region, the humid, semihumid, and semiarid warm temperate regions, and the northern subtropical humid region in 2001 and 2010.

scholarly journals Fatigue Performance of Thin Laser Butt Welds in HSLA Steel

Metals ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 1499
Author(s):  
Patricio G. Riofrío ◽  
Fernando Antunes ◽  
José Ferreira ◽  
António Castanhola Batista ◽  
Carlos Capela
Keyword(s):  
Fatigue Strength ◽  
Fatigue Behavior ◽  
Hsla Steel ◽  
High Strength ◽  
Butt Joints ◽  
Factors Affecting ◽  
Weld Profile ◽  
The Relationship ◽  
Good Agreement ◽  
Significant Factors

This work is focused on understanding the significant factors affecting the fatigue strength of laser-welded butt joints in thin high-strength low-alloy (HSLA) steel. The effects of the weld profile, imperfections, hardness, and residual stresses were considered to explain the results found in the S-N curves of four welded series. The results showed acceptable fatigue strength although the welded series presented multiple-imperfections. The analysis of fatigue behavior at low stress levels through the stress-concentrating effect explained the influence of each factor on the S-N curves of the welded series. The fatigue limits of the welded series predicted through the stress-concentrating effect and by the relationship proposed by Murakami showed good agreement with the experimental results.

scholarly journals An Examination of Relationship between Career Maturity and Multiple Factors by Feature Selection

2020 ◽  
Author(s):  
Shuxing Zhang ◽  
Qinneng Xu
Keyword(s):  
Feature Selection ◽  
Career Maturity ◽  
Selection Methods ◽  
School Students ◽  
Feasible Method ◽  
Multiple Factors ◽  
Sample Data ◽  
Forward Stepwise ◽  
The Relationship ◽  
Significant Factors

The purpose of this study is to investigate the relationship between career maturity and a branch of factors among senior school students. The sample data were collected from a total of 189 students. The linear relationship between career maturity and 72 factors were tested by using feature selection methods. LASSO and forward stepwise were compared based on crossvalidation. The results showed that LASSO was a feasible method to select the significant factors, and 12 of the total 72 factors were found to be important in predicting career maturity.

scholarly journals Simulation of the impact of economic development on social development of the country

2020 ◽  
Vol 18 (3) ◽  
pp. 37-54
Author(s):  
Olena Rayevnyeva ◽  
Iryna Aksonova ◽  
Olha Brovko ◽  
Stanislav Filip
Keyword(s):  
Economic Development ◽  
Social Development ◽  
Economic Condition ◽  
Statistical Research ◽  
The Social ◽  
Main Components ◽  
Algorithmic Model ◽  
The Impact ◽  
The Relationship ◽  
Significant Factors

In the current conditions of development of the international and national economy, an important task of statistical research is to conduct an objective and timely assessment and modeling of the relationship between indicators of economic and social development. Based on the results of these studies, reasonable management influences of the state on the adjustment and regulation of the country’s development are accepted. The article is devoted to the study of the relationship between the main components of economic and social development of the country and the construction of a set of models for forecasting the prospects of the country. The object of the study is the socio-economic condition of the country. The article proposes an algorithmic model for assessing the impact of economic development on society, which allows to identify key economic indicators that influence and shape the social development of the country. The practical value of the algorithmic model is to develop a system of evaluation and selection as a result of modeling the most significant factors that shape the social development of the country. The study confirmed the hypothesis of the dominant impact of economic development on society and determined that the main economic factors are the level of competencies that satisfy the modern labour market, technical development of businesses and their competitiveness in markets.

scholarly journals Motivational analysis of tourists who visit a city with inscriptions World Heritage Site, Granada, Spain

2021 ◽  
Vol 10(1) (10(1)) ◽  
pp. 349-375
Author(s):  
José Valverde-Rodaa ◽  
Gema Gomez-Casero ◽  
Tomás López-Guzmán ◽  
Miguel Jesús Medina-Viruel
Keyword(s):  
World Heritage ◽  
Cultural Tourism ◽  
World Heritage Site ◽  
Interesting Aspect ◽  
Tourist Destination ◽  
Demographic Profile ◽  
Heritage Site ◽  
Tourist Behaviour ◽  
The Relationship ◽  
The City

In recent times, it has been noticed that cultural tourism attracts millions of people. One interesting aspect is the analysis of WHS (World Heritage Site) destinations or cultural destinations that have an inscription WHS. This research has the goal of analysing the different groups of tourists who visit a cultural destination with an inscription WHS, specifically the city of Granada (Spain). For this, segmentation was performed, studying the socio-demographic profile of the tourists and their assessment of the attributes of this destination. For the tourist segmentation, two models have been followed. Four different groups of tourists were found: alternative, cultural, emotional and heritage. In this last one, the relationship between curiosity about the culture of the tourist destination and the heritage visited has a determining role. This study makes an important contribution to the literature regarding the links between the tourist and the historic and monumental heritage they visit and their tourist behaviour.

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