A non-intrusive image analysis technique for measurement of heterogeneity in grass species around tree vicinity in a green infrastructure

Gadi, Vinay Kumar; Garg, Ankit; Prakash, Shiv; Wei, Lili; Andriyas, Sanyogita

doi:10.1016/j.measurement.2017.09.010

Cited by 19 publications

(7 citation statements)

References 63 publications

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“…These values were typically found for matured Schefflera heptaphylla grown, in CDG soil with a DoC of 80 per cent (Leung et al , 2015b). Although root depth is low, suction in such case was reported to effect the infiltration of green infrastructure (Leung et al , 2015a; Gadi et al , 2018; Garg et al , 2017a, 2017b, 2017c) and erosion of vegetated soil (Lee et al , 2005; Zhu and Zhang, 2015b). In addition, green infrastructure is the strategy, which enhances sustainability of urban areas and provides socio-ecological benefits (Meerow and Newell, 2017).…”

Section: Methodsmentioning

confidence: 99%

Modeling soil-plant-water interaction

Gadi

Singh

Singhariya

et al. 2018

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Purpose The purpose of this paper is to numerically investigate the combined effects of canopy (leaf area index [LAI]) and root properties (root distribution function [Rdf] and root area index [RAI]) on a suction induced in soil-root composite under three different scenarios. Design/methodology/approach Richards equation coupled with sink term was solved using a commercial finite element package “HYDRUS” to investigate suction induced in soil-root composite. Findings Scenario 1 unveiled that soil-root composite induces 1 to 20 per cent higher suction than bare soil under the absence of transpiration. From Scenario 2, value of suction at depth of maximum RAI in case of linearly decreasing Rdf was found to be higher than that of other Rdfs. However, depth of suction influence zone (SIZ) for uniform Rdf and non-linear Rdf was found to be 10 and 11 per cent higher than that of linearly decreasing Rdf. Depth of evaporation dominant zone (EDZ) for uniformly decreasing Rdf and non-linear Rdf was found to be 1.08 to 3 times higher than that of linearly decreasing Rdf. From Scenario 3, influence of LAI on depth of SIZ is minimal. Depth of EDZ was found to decrease with the increase in LAI. Based on simple calculation on infinite slope stability, influence of variation in root and shoot properties was found to be significant on its factor of safety. Research limitations/implications Numerical constitutive model has limitations that it does not consider aging of plant. This model is only applicable for a particular set of soil conditions. A long-term study is required in this field to further quantify parameters for improving calibration and modeling performance. Practical implications Following are the practical implication: consideration of vegetation properties into engineered design of green infrastructure (slopes in this case) and selection of vegetation with appropriate characteristics in design for enhancement of stability of green infrastructure. Originality/value Contents of this paper are original, and they have not been submitted to any other journal.

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Section: Methodsmentioning

confidence: 99%

Modeling soil-plant-water interaction

Gadi

Singh

Singhariya

et al. 2018

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“…In literature, there are several works analyzing the design process of drones. In [1][2][3][4], detailed analysis have been realized for the number of rotors, arm length and carrying capacity parameters by taking into account the operating conditions and areas of use. Kršák and his friends have analyzed the accuracy of the digital elevation model (DEM) which was obtained by using 4-rotor low-cost UAV photogrammetry [5].…”

Section: Introductionmentioning

confidence: 99%

Performance analysis of multi rotor drone systems with changeable rotors

Yıldırım

İşci

2023

IRASE

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Due to some failure during the flying of drone systems, it is necessary to design and analyse compact and changeble muti rotor drone systems by using softwares. Multi-engine aircrafts are the mechatronic systems consisting of body frame, electronic control systems, rotors and blades. In the simulations realized in this work special focus has been given to the body frame due to the presence of mechanical and electronic components inside. Analysis of different vibration and force effects occurring on the whole system during the flight with high accuracy is vital for the design process of multi-engine aircrafts. In this work, a novel design procedure has been applied for the multi-engine aircraft structures including 4, 6, 8, 10 and 12 rotors and then the vibration and force effects occurring during the flight have been analyzed. As a result of detailed modal analysis carried out for different vibration frequencies, it has been observed that the vibration frequencies occurring during the flight vary between 7 and 10 Hz. Moreover, from the results obtained, it has been observed that the vibration frequency decreases while the number of rotors increased. As a result of these decreases in the vibration frequency, it has also been observed that the deformations in the body frame increased.

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“…As the popularity of UAVs increases, it is necessary to obtain different configurations for different usage areas [15,16] such as remote sensing applications [17,18]. In terms of imaging, it is used for many purposes such as agricultural monitoring [19][20][21], road [22,23], film and photographic industry and monitoring of industrial plants etc. [24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Design, Modelling and Control of an Eight-Rotors UAV with Asymmetric Configuration for Use in Remote Sensing Systems

Çabuk

Yıldırım

2021

Journal of Aviation

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The use of multirotor unmanned aerial vehicles (UAV), which can take-off and landing vertically, is gradually expanding. Although there are many types of these vehicles with standard configuration, non-standard configurations may be required for special purposes usage. So, an octocopter UAV with asymmetric configuration is proposed in this study. In particular, this asymmetrically configured octocopter is intended to be used for imaging or mapping purposes, and may be a solution to widen the viewing angle of the camera or any sensor placed on the vehicle, especially in the use of multiple cameras and sensors. The mathematical model of this proposed UAV system was obtained and the trajectory tracking was performed using PID control method. The control parameters of the controller were determined using Grey Wolf Optimizer (GWO). Considering the propellers determined in two different sizes due to its asymmetrical structure, it has been observed that the proposed UAV performs a satisfactory trajectory tracking.

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A non-intrusive image analysis technique for measurement of heterogeneity in grass species around tree vicinity in a green infrastructure

Cited by 19 publications

References 63 publications

Modeling soil-plant-water interaction

Modeling soil-plant-water interaction

Performance analysis of multi rotor drone systems with changeable rotors

Design, Modelling and Control of an Eight-Rotors UAV with Asymmetric Configuration for Use in Remote Sensing Systems

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