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Particle Swarm Optimization for Solving Sine-Gordan Equation
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作者 Geeta Arora Pinkey Chauhan +3 位作者 Muhammad Imran Asjad varun joshi Homan Emadifar Fahd Jarad 《Computer Systems Science & Engineering》 SCIE EI 2023年第6期2647-2658,共12页
The term‘optimization’refers to the process of maximizing the beneficial attributes of a mathematical function or system while minimizing the unfavorable ones.The majority of real-world situations can be modelled as... The term‘optimization’refers to the process of maximizing the beneficial attributes of a mathematical function or system while minimizing the unfavorable ones.The majority of real-world situations can be modelled as an optimization problem.The complex nature of models restricts traditional optimization techniques to obtain a global optimal solution and paves the path for global optimization methods.Particle Swarm Optimization is a potential global optimization technique that has been widely used to address problems in a variety of fields.The idea of this research is to use exponential basis functions and the particle swarm optimization technique to find a numerical solution for the Sine-Gordan equation,whose numerical solutions show the soliton form and has diverse applications.The implemented optimization technique is employed to determine the involved parameter in the basis functions,which was previously approximated as a random number in the work reported till now in the literature.The obtained results are comparable with the results obtained in the literature.The work is presented in the form of figures and tables and is found encouraging. 展开更多
关键词 Differential quadrature method B-SPLINE particle swarm optimization Sine-Gordan equation
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Comprehensive Review on Air Pollution Control Measures for Non-Attainment Cities of Uttar Pradesh, India
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作者 Khyati Sharma Anchal Garg varun joshi 《Journal of Environmental Protection》 CAS 2023年第3期139-162,共24页
Introduction: The Indian state of Uttar Pradesh (UP) for the past many years has been reported to have many cities with highly polluted air quality. The state has been taking meticulous steps in combating air pollutio... Introduction: The Indian state of Uttar Pradesh (UP) for the past many years has been reported to have many cities with highly polluted air quality. The state has been taking meticulous steps in combating air pollution in the form of action plans, introduced especially in its 17 non-attainment cities (NAC). To assess the progress and development of these action plans in UP, the present study has done an in-depth analysis and review of the state’s action plans and city micro action plans. Materials and Methods: In this research study, the analysis of the latest action plan reports, micro action plan reports as well as the recommendations for combating air pollution-related issues in the 17 NAC of the UP state has been well documented. Uttar Pradesh Pollution Control Board (UPPCB) has prepared these reports to highlight the progress of the plans in response to the growing air pollution in these cities. The information present in the reports has been used to further study sector-specific, category-specific action plans, institutional responsibility, and the present status of the action plans. Results: On average, the highest weightage in action plans was given to sector-specific categories such as Road dust and construction activities (24%). It was also observed that Urban local bodies (~50%) were majorly responsible to implement the action points and 56% of the action points were jointly implemented by multiple agencies. 展开更多
关键词 Air Pollution Air Quality Air Pollution Control Non-Attainment Cities INDIA Uttar Pradesh Particulate Matter
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印度喜马拉雅中部阿拉克南达集水区的气候可变性、脆弱性和应对机制
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作者 Kireet Kumar Sneh joshi +1 位作者 varun joshi 王胜(译) 《AMBIO-人类环境杂志》 2008年第4期272-277,313,共6页
本文对喜马拉雅中部阿拉克南达集水区进行了研究,发现了其降雨和温度格局的趋势。分析了过去10年的年降雨量、季风降雨及过去几十年的年平均温度。确定趋势使用的是非参数方法(曼肯德尔[Mann-Kendall]和森氏[Sen]方法)。曼肯德尔检验表... 本文对喜马拉雅中部阿拉克南达集水区进行了研究,发现了其降雨和温度格局的趋势。分析了过去10年的年降雨量、季风降雨及过去几十年的年平均温度。确定趋势使用的是非参数方法(曼肯德尔[Mann-Kendall]和森氏[Sen]方法)。曼肯德尔检验表明降雨下降而温度升高,在两个海拔区,这些趋势在95%的置信区间上呈统计学显著。森氏方法也证实了这个趋势。这个现象必须严肃对待,原因很简单,如果同样的趋势在未来持续下去的话,那么干旱的可能性将大为增加。集水区的人民已经察觉到气候变化的影响,在当地已经开发出了应对机制。 展开更多
关键词 喜马拉雅 气候变化 集水区 机制 可变性 年平均温度 年降雨量 印度
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喜马拉雅山区压力之下的土地利用状况:系统响应
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作者 Girish C.S.Negi +1 位作者 varun joshi 闵庆文 《人类环境杂志》 1997年第2期122-124,共3页
引言在印度格尔瓦喜马拉雅山区,一些地方正在经历着耕地向荒地转变的过程。这一区域农业在生态学与经济学上都不能持续发展的主要因素有:靠雨水耕作(只有18.4%的耕地可以灌溉)、小规模、零碎的土地分布在崎岖的地形上(70%的地块<1hm... 引言在印度格尔瓦喜马拉雅山区,一些地方正在经历着耕地向荒地转变的过程。这一区域农业在生态学与经济学上都不能持续发展的主要因素有:靠雨水耕作(只有18.4%的耕地可以灌溉)、小规模、零碎的土地分布在崎岖的地形上(70%的地块<1hm^2,且可能分布在30块从0.01到0.058hm^2不等的小梯田上);由于土地/人口比高而作物的产出/投入比低而使作物产量不高;采用集约经营农业的规模有限;用于畜牧业以及为农田培肥的植被稀少等。该区域居民的主要职业是务农,这就要求大量的饲料以饲养性畜。 展开更多
关键词 喜玛拉雅山区 土地利用状况 系统响应
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