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.

scholarly journals Environmental factors as correlates of research attitude among post-graduate students in Nigeria: A path model approach

2021 ◽  
Vol 20 (1) ◽  
pp. 35-44
Author(s):  
Isaac Ofem Ubi ◽  
Jacob Esu Odiong
Keyword(s):  
Graduate Students ◽  
Environmental Factors ◽  
Environmental Variables ◽  
Research Question ◽  
Research Area ◽  
Path Model ◽  
Multivariate Statistical ◽  
Post Graduate ◽  
The Relationship ◽  
Model Approach

The study investigated the relationship among some environmental factors and research attitude of post-graduate students in Nigeria using a path model approach. The researchers were poised at filling the gap in the type of multivariate statistical tools that have hitherto been used in comparing these variables by authors in the research area. One research question was formulated to guide the study. Survey research design was adopted for the study. The study area, which was south-south Nigeria, is one of the geo-political zones in the country with six federal universities. The population of the study was made up of 1,299 post graduate students of education faculties in the six universities. A sample of 520 students (40% of the population) was selected for the study through stratified random sampling method. The study instrument was a questionnaire titled Environmental and Attitude variables Questionnaire (EAVQ) prepared by the researchers. Result of the study showed that 14 out of 15 pathways in the hypothesized model for the relationship between environmental variables and research attitudewere significant and meaningful, withfive direct and nine indirect pathways. Based on the finding, the study recommends an improvement in those environmental factors to bring about corresponding improvement in research attitude. The study suggests that a study of the relationship between other environmental variables not included in this study on graduate students‟ research attitude in federal universities in south-south Nigeria should be carried out by future researchers. Such research can be extended to cover more geo-political zones in the country.

Forecasting the Tyva Republic population based on correlation and regression analysis

2021 ◽  
Vol 20 (7) ◽  
pp. 1278-1295
Author(s):  
Shonchalai Ch. SOYAN ◽  
Orgaadai E. TUTATCHIKOVA
Keyword(s):  
Regression Analysis ◽  
Population Based ◽  
Multivariate Statistical ◽  
Correlation And Regression Analysis ◽  
Study Results ◽  
Mathematical Equations ◽  
Tyva Republic ◽  
The Relationship ◽  
Image Format ◽  
Significant Factors

Subject. The article deals with the forecast of the population of the Tyva Republic in the short term, based on correlation and regression analysis. Objectives. The aim is to forecast the population of the Tyva Republic, using the correlation and regression analysis. Methods. The study draws on the correlation and regression analysis, as one of the methods of multivariate statistical analysis, in which the form and intensity of relationship are presented in the form of mathematical equations and formulas. We also apply methods of comparison, dynamics, table and image format of visualization of the study results. Results. The correlation and regression analysis provides forecast data relating to the population of the Tyva Republic for 2020, which is very close to the actual population for this year. The analysis of indicators for development of the population revealed an annual increase, despite the declining fertility rates and unstable trend in mortality. The paper estimates the parameters of the regression equation, which describes the relationship between fertility, mortality, migration and population size. The findings may help create programs for demographic policy, socio-economic development of the territory, improvement of living standards in the region. Conclusions. The use of correlation and regression analysis will serve as a fairly reliable method to solve the problem. The study unveils significant factors that affect the growth or decline of population in the region.

scholarly journals Correlation of Circular RNA hsa_circ_0001946, hsa_circ_0125589, and Environmental Factors With Hypertension

2020 ◽  
Vol 33 (11) ◽  
pp. 1047-1047
Author(s):  
Wan-yue Liu ◽  
Yi Sun ◽  
Shu-na Huang ◽  
Yu-zhen Lin ◽  
Hong-yan Guo ◽  
...  
Keyword(s):  
Environmental Factors ◽  
Peripheral Blood ◽  
Circular Rna ◽  
Peripheral Blood Lymphocytes ◽  
Normal Weight ◽  
Circular Rnas ◽  
Blood Leukocytes ◽  
Crossover Analysis ◽  
History Of ◽  
The Relationship

Abstract Background To investigate the main environmental factors of hypertension and the relationship between hypertension and circular RNAs in peripheral blood lymphocytes. Methods This was a case–control study. A total of 681 hypertension patients and 485 subjects without hypertension were recruited between April 2017 and October 2018. All participations completed the questionnaire investigation, physical examination, and laboratory detection. Quantitative real-time polymerase chain reaction was used to analyze circRNAs (hsa_circ_0001946 and hsa_circ_0125589) in peripheral blood leukocytes in 84 hypertensives and 84 controls. Multivariate logistic regression and crossover analysis were used to analyze the interaction and association between environmental factors and circRNAs in hypertension. Results After adjusted by gender, age and marital status, overweight/obesity (odds ratio (OR) = 1.66, 95% confidence interval (CI) 1.24–2.22), abdominal obesity (OR = 2.17, 95% CI 1.54–3.04), anxiety (OR = 2.15, 95% CI 1.41–3.28), family history of hypertension (OR = 4.26, 95% CI 3.18–5.70), and higher levels of hsa_circ_0001946 (OR = 4.13, 95% CI 1.85–9.21) were risk factors for hypertension, while levels of hsa_circ_0125589 were not associated with hypertension. Crossover analysis showed that the risk of hypertension was 13.12 times higher (95% CI 3.89–44.23) in overweight subjects with high hsa_circ_0001946 levels compared with normal weight subjects with low hsa_circ_0001946 levels. Further, the risk of hypertension was 17.78 times higher (95% CI 1.88–168.61) in subjects with anxiety and high hsa_circ_0001946 levels. Conclusions Hypertension is the result of both environmental factors and genetic factors. Higher hsa_circ_0001946 levels, overweight and anxiety may increase the risk of hypertension, while hsa_circ_0125589 levels are not related to hypertension.

scholarly journals 31.B. Workshop: Public health and urban design: an interdisciplinary approach to promote autism friendly environments

2020 ◽  
Vol 30 (Supplement_5) ◽  
Author(s):  
◽  
Keyword(s):  
Public Health ◽  
Risk Factors ◽  
Environmental Factors ◽  
Built Environment ◽  
Urban Design ◽  
Significant Role ◽  
Prevalence Rates ◽  
Environmental Characteristics ◽  
The Relationship

Abstract Autism is a set of heterogeneous neurodevelopmental conditions, characterised by early-onset difficulties in social communication and restricted, repetitive behaviour and interests. The worldwide population prevalence is about 1% with an increasing incidence and prevalence rates. Autism affects more male than female individuals, and comorbidity is common (>70% have concurrent conditions). Determinants of these changes in incidence and prevalence rates may also be related to exposure to environmental factors and to modifications in diagnostic concepts and criteria. In spite of the uncertainty in determinants of incidence of autisms, there is evidence that environmental characteristics play a significant role both as autism risk factors and as potential obstacles that influence the capabilities of autonomously and fully “using” everyday spaces. The workshop aims to provide a framework on risk factors of autism and explore the relationship with the built environment, focusing on the quality of the everyday spaces and projecting the effects that it could have in the long term on achieving a desirable level of quality of life. The 11th Sustainable Development Goals of United Nations “Make cities inclusive, safe, resilient and sustainable” underlines the necessity of designing policies and projects acting to enhance and promote healthy cities and communities by addressing the needs of the most vulnerable groups of inhabitants. Herewith we bring together the discipline of Public Health and Urban Design to promote an interdisciplinary debate on a little explored topic investigating how the approaches adopted during childhood to promote the wellbeing of people with ASD can be related or strengthen by focusing also on built environment design intervention to pursue and reach the same objectives even during adulthood. The workshop will consist of four presentations. The first focuses on giving an overview on current knowledge of intervention for people with autism, presenting also criteria for evidence-based interventions. The second explores the relationship between autism and built environment by providing an exhaustive framework of the available research literature in order to identify a first set of spatial requirements for autism friendly cities. The third examines the impact of built environment on ASD users with the aim of developing a specific evaluation tool for healthcare spaces and best practices formulation according to the specific sensorial hypo- or hyper-activation of people with autism. Finally, the fourth reports the results of a two years Research & Development project called “GAP REDUCE” finalized at developing an Assistive Technology tool to support people with ASD, adult and high-functioning, to plan urban itineraries towards daily destinations. Key messages World's incidence of autism is about 1% with an increasing incidence whose determining rates may also be related to environmental factors and to modifications in diagnostic concepts and criteria. Environmental characteristics play a significant role also as potential obstacles that influence the capabilities of people with autism of autonomously and fully “using” everyday spaces.

Study on Water Quality Improvement of Streams in Baoan District, Shenzhen City, China

2011 ◽  
Vol 347-353 ◽  
pp. 1902-1905
Author(s):  
Hua Li You
Keyword(s):  
Waste Water ◽  
Mathematical Model ◽  
Water Quality ◽  
Fresh Water ◽  
Water Discharge ◽  
Water Environment ◽  
Oxygen Demand ◽  
Polluted Water ◽  
Integrated Analysis ◽  
Shenzhen City

Water is the basis of natural resources and strategic economic resources.Deteriorated water environment of streams in Shenzhen city could have a great impact on ecological safety, people's health,and economic development.Based on the data of field observation and Remote sensing (RS) image,integrated analysis of the water degradation causes,and the changes of biochemical oxygen demand in five days(BOD5）concentration by mathematical model were carried out,which is on basis of percentage of waste water disposal,fresh water transformation,and harbor excavation, respectively.The results show that degradation causes of water quality were resulted from waste water discharge, harbor construction,and ecological environment damage, which could lead to slowly water exchange. Accordingly,the pollution can be easily to store in the bay,which result in water quality changes.The most important improved countermeasure is the control of waste water, which could be had a great effectiveness to decrease pollution.In addition, fresh water must be supplied after polluted water was cut off,which can be better improvement for water quality.This would be extreme improvement for hydrological dynamics due to 15m harbor excavation,which can significantly reduce BOD5 concentration.The innovation points of this paper is to mathematical model,which is based on the basis of qualitative analysis.

scholarly journals Impact of the municipal merger on watershed management: a study of Lake Kasumigaura, Japan

2021 ◽  
Author(s):  
Takeshi Mizunoya ◽  
Noriko Nozaki ◽  
Rajeev Kumar Singh
Keyword(s):  
Watershed Management ◽  
Large Scale ◽  
Environmental Changes ◽  
Water Environment ◽  
Reduction Rate ◽  
Oxygen Demand ◽  
Policy Implications ◽  
Pollution Reduction ◽  
Lake Kasumigaura ◽  
The Impact

AbstractIn the early 2000s, Japan instituted the Great Heisei Consolidation, a national strategy to promote large-scale municipal mergers. This study analyzes the impact that this strategy could have on watershed management. We select the Lake Kasumigaura Basin, the second largest lake in Japan, for the case study and construct a dynamic expanded input–output model to simulate the ecological system around the Lake, the socio-environmental changes over the period, and their mutual dependency for the period 2012–2020. In the model, we regulate and control the following water pollutants: total nitrogen, total phosphorus, and chemical oxygen demand. The results show that a trade-off between economic activity and the environment can be avoided within a specific range of pollution reduction, given that the prefectural government implements optimal water environment policies, assuming that other factors constraining economic growth exist. Additionally, municipal mergers are found to significantly reduce the budget required to improve the water environment, but merger budget efficiency varies nonlinearly with the reduction rate. Furthermore, despite the increase in financial efficiency from the merger, the efficiency of installing domestic wastewater treatment systems decreases drastically beyond a certain pollution reduction level and eventually reaches a limit. Further reductions require direct regulatory instruments in addition to economic policies, along with limiting the output of each industry. Most studies on municipal mergers apply a political, administrative, or financial perspective; few evaluate the quantitative impact of municipal mergers on the environment and environmental policy implications. This study addresses these gaps.

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 Research on the Relationship between Shared Leadership and Individual Creativity-Qualitative Comparative Analysis on the Basis of Clear Set

2021 ◽  
Vol 13 (10) ◽  
pp. 5445
Author(s):  
Muyun Sun ◽  
Jigan Wang ◽  
Ting Wen
Keyword(s):  
Comparative Analysis ◽  
Environmental Factors ◽  
Shared Leadership ◽  
Management Practices ◽  
Qualitative Comparative Analysis ◽  
Necessary Condition ◽  
The Individual ◽  
The Impact ◽  
The Relationship ◽  
Sufficient And Necessary Condition

Creativity is the key to obtaining and maintaining competitiveness of modern organizations, and it has attracted much attention from academic circles and management practices. Shared leadership is believed to effectively influence team output. However, research on the impact of individual creativity is still in its infancy. This study adopts the qualitative comparative analysis method, taking 1584 individuals as the research objects, underpinned by a questionnaire-based survey. It investigates the influence of the team’s shared leadership network elements and organizational environmental factors on the individual creativity. We have found that there are six combination of conditions of shared leadership and organizational environmental factors constituting sufficient combination of conditions to increase or decrease individual creativity. Moreover, we have noticed that the low network density of shared leadership is a sufficient and necessary condition of reducing individual creativity. Our results also provide management suggestions for practical activities during the team management.

scholarly journals Cats in the forest: predicting habitat adaptations from humerus morphometry in extant and fossil Felidae (Carnivora)

Paleobiology ◽  
10.1666/12001 ◽  
2013 ◽  
Vol 39 (3) ◽  
pp. 323-344 ◽  
Author(s):  
Carlo Meloro ◽  
Sarah Elton ◽  
Julien Louys ◽  
Laura C. Bishop ◽  
Peter Ditchfield
Keyword(s):  
Morphological Variability ◽  
Olduvai Gorge ◽  
Environmental Predictors ◽  
Linear Measurements ◽  
Multivariate Statistical ◽  
Linear Discriminant ◽  
Related Group ◽  
Discriminant Analyses ◽  
The Stability ◽  
The Relationship

Mammalian carnivores are rarely incorporated in paleoenvironmental reconstructions, largely because of their rarity within the fossil record. However, multivariate statistical modeling can be successfully used to quantify specific anatomical features as environmental predictors. Here we explore morphological variability of the humerus in a closely related group of predators (Felidae) to investigate the relationship between morphometric descriptors and habitat categories. We analyze linear measurements of the humerus in three different morphometric combinations (log-transformed, size-free, and ratio), and explore four distinct ways of categorizing habitat adaptations. Open, Mixed, and Closed categories are defined according to criteria based on traditional descriptions of species, distributions, and biome occupancy. Extensive exploratory work is presented using linear discriminant analyses and several fossils are included to provide paleoecological reconstructions.We found no significant differences in the predictive power of distinct morphometric descriptors or habitat criteria, although sample splitting into small and large cat guilds greatly improves the stability of the models. Significant insights emerge for three long-canine cats:Smilodon populator,Paramachairodus orientalis, andDinofelissp. from Olduvai Gorge (East Africa).S. populatorandP. orientalisare both predicted to have been closed-habitat adapted taxa. The false “sabertooth”Dinofelissp. from Olduvai Gorge is predicted to be adapted to mixed habitat. The application of felid humerus ecomorphology to the carnivoran record of Olduvai Gorge shows that the older stratigraphic levels (Bed I, 1.99–1.79 Ma) included a broader range of environments than Beds II or V, where there is an abundance of cats adapted to open environments.

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