Fluvial Processes and Channel Stability of the Torsa River, West Bengal (India)

2019 ◽  
Vol 2 (2) ◽  
pp. 62-78
Author(s):  
Sourav Dey ◽  
Sujit Mandal ◽  
Keyword(s):  
Stability Analysis ◽  
West Bengal ◽  
Bank Erosion ◽  
Field Work ◽  
Channel Stability ◽  
Fluvial Processes ◽  
Stream Bank ◽  
Reserve Forest ◽  
The Individual ◽  
Torsa River

Fluvial processes such as bank erosion plays an important role to change the channel stability of the Torsa River in the downstream region. The present study was focused on stream stability assessment of the Torsa River. The study area is situated between the downstream of the Jaldapara Reserve Forest and confluence of Kaljani River. Data of different parameters about 64 bank segments of the Torsa River were prepared using the field work techniques for assessing the stream bank conditions using lateral, vertical and overall reach stability models. The individual results of BEHI and NBS ratings show that out of 64 bank segments only 35 and 19 bank segments classified in higher categories. Overall lateral stability analysis shows that most of the sample bank segments are in an unstable condition. All bank segments are vertically unstable and degrading. Overall reach stability analysis shows widespread instability. BEHI and NBS results are almost similar for most of the bank segments and therefore, BEHI and NBS can be suitable bank erosion hazard predictive models in the study for channel stability analysis.

Ventspils apkārtnes apdzīvojums 17.–18. gadsimtā

2021 ◽  
pp. 20-26
Author(s):  
Muntis Auns ◽  
Keyword(s):  
Population Structure ◽  
Environmental Factors ◽  
Wind Erosion ◽  
18Th Century ◽  
Bank Erosion ◽  
Small Impact ◽  
Settlement Structure ◽  
Stream Bank Erosion ◽  
Stream Bank ◽  
The Individual

The article deals with questions relating to the settlement in the area of Ventspils. Attention is gi-ven to environmental factors that could have had a greater or lesser influence on the settlement structure. The stream bank erosion along the River Venta had a relatively small impact on populated areas, while the wind erosion (sand deposition) caused the individual farms as well as villages to be abandoned. The Great Plague epidemic of 1710 was particularly devastating in the Ventspils area, during which about 40% of farms disappeared and most of them were not restored until the end of the 18th century. Final abandon-ment of farms, their renovation or addition of the former farmland to the land of the manor caused chan-ges in the population structure.

scholarly journals Um encontro com as fontes em História Oral

2006 ◽  
Vol 32 (1) ◽  
Author(s):  
Marcos Fábio Freire Montysuma
Keyword(s):  
Key Words ◽  
Oral History ◽  
Field Work ◽  
The Individual ◽  
The Relationship

Neste trabalho refletimos sobre a produção e os usos das fontes e dos instrumentos metodológicos que orientam as ações na condução do trabalho do historiador que lida com o que se convencionou chamar História Oral. Buscamos discutir a singularidade do trabalho de campo, envolvendo a relação entre o pesquisador e as pessoas ouvidas, como condição de uma ciência que lida essencialmente com o indivíduo. Abstract In this article we reflect upon the production and uses of sources and methodological tools which guide the actions of the historian who deals with the field conventionally referred to as Oral History. We aim at discussing the singularity of field work, bringing into play the relationship between the researcher and people who are listened to – a vital condition for a science that essentially deals with the individual. Palavras-chave: Fontes. Metodologia. História Oral. Key words: Sources. Methodology. Oral History.

scholarly journals Effect of Variable Viscosity and Gravity Modulation on Linear and Non-Linear Rayleigh-Benard Convection in Viscoelastic Ferromagnetic Liquids

2020 ◽  
Vol 9 (3) ◽  
pp. 3482-3488
Keyword(s):  
Stability Analysis ◽  
Heat Transport ◽  
Linear Stability ◽  
Linear Stability Analysis ◽  
Variable Viscosity ◽  
Low Frequency ◽  
Physical Parameters ◽  
Gravity Modulation ◽  
Non Linear ◽  
The Individual

The combined effect of various parameters of gravity modulation on the onset of ferroconvection is studied for both linear and non-linear stability. The effect of various parameters of ferroconvection is studied for linear stability analysis. The resulting seven-mode generalized Lorenz model obtained in non-linear stability analysis is solved using Runge -Kutta-Felberg 45 method to analyze the heat transfer. Consequently the individual effect of gravity modulation on heat transport has been investigated. Further, the effect of physical parameters on heat transport has been analyzed and depicted graphically. The low-frequency gravity modulation is observed to get an effective influence on the stability of the system. Therefore ferro convection can be advanced or delayed by controlling different governing parameters. It shows that the influence of gravity modulation stabilizes system.

A novel lattice hydrodynamic model accounting for individual difference of honk effect for two-lane highway under V2X environment

2022 ◽  
Author(s):  
Xiaoqin Li ◽  
Guanghan Peng
Keyword(s):  
Stability Analysis ◽  
Individual Difference ◽  
Early Time ◽  
Mkdv Equation ◽  
Traffic Modeling ◽  
Lattice Hydrodynamic Model ◽  
Lane Changing ◽  
The Individual ◽  
The Impact ◽  
Honk Effect

In this work, the individual difference of the honk effect is explored on two lanes via traffic modeling of the lattice model under Vehicle to X (V2X) environment. We study the impact of individual difference corresponding to honk cases on traffic stability through linear stability analysis for a two-lane highway. Furthermore, the mKdV equation under the lane changing phenomena is conducted via nonlinear analysis. Simulation cases for the early time and longtime impact reveal that individual difference of driving characteristics has a distinct impact on two lanes under the whistling environment.

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