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Modeling and Comprehensive Review of Signaling Storms in 3GPP-Based Mobile Broadband Networks:Causes,Solutions,and Countermeasures

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Computer Modeling in Engineering & Sciences 2025年第1期142卷 123-153页

作者： muhammad qasim khan Fazal Malik Fahad Alturise Noor Rahman Department of Computer Science Iqra National UniversityPeshawar25000Pakistan Department of Cybersecurity College of ComputerQassim UniversityBuraydah52555Saudi Arabia Department of Computer Science and Engineering Al-Fayha CollegeAl Jubayl31961Saudi Arabia

Control signaling is mandatory for the operation and management of all types of communication networks,including the Third Generation Partnership Project(3GPP)mobile broadband ***,they consume important and scarce network resources such as bandwidth and processing *** have been several reports of these control signaling turning into signaling storms halting network operations and causing the respective Telecom companies big financial *** paper draws its motivation from such real network disaster incidents attributed to signaling *** this paper,we present a thorough survey of the causes,of the signaling storm problems in 3GPP-based mobile broadband networks and discuss in detail their possible solutions and *** provide relevant analytical models to help quantify the effect of the potential causes and benefits of their corresponding *** important contribution of this paper is the comparison of the possible causes and solutions/countermeasures,concerning their effect on several important network aspects such as architecture,additional signaling,fidelity,etc.,in the form of a *** paper presents an update and an extension of our earlier conference *** our knowledge,no similar survey study exists on the subject.

关键词： Signaling storm problems control signaling load analytical modeling 3GPP networks smart devices diameter signaling mobile broadband data access data traffic mobility management signaling network architecture 5G mobile communication

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Risk-averse Market Clearing for Coupled Electricity, Natural Gas and District Heating System

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CSEE Journal of Power and Energy Systems 2019年第2期5卷 240-248页

作者： Haibing Wang Chengmin Wang muhammad qasim khan Gengwu Zhang Ning Xie Department of Electrical Engineering Shanghai Jiao Tong UniversityShanghai 200240China

Multiple energy carriers can be coupled as an Integrated Energy System (IES) through interconnection tech- nologies. Unexpected risks will be transferred with the growing coupling of energy systems, mainly stemming from the uncertain- ties in different energy sectors. It is imperative to coordinate the operation of different energy systems to improve energy efficiency and ensure energy security. With the close integration of different energy systems, it is necessary to couple these different energy markets to achieve the holistic energy supply economy. On the other hand, uncertainties in the energy systems will bring the financial risk for the operator of IES. A risk-averse stochastic market clearing model for the IES is proposed to study the operating strategy aiming at minimizing the operation cost. While the financial risk imposed by the wind power uncertainties is restricted to a predefined level. Simulations results are provided to verify that the proposed model can improve market efficiency and handle the trade-off between cost and risk.

关键词： CVaR integrated energy system market clearing power-to-gas stochastic programming

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高压直流输电系统直流潮流的设计、分析和控制方案

高压直流输电系统直流潮流的设计、分析和控制方案

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作者： muhammad qasim khan 上海交通大学

学位级别：硕士

随着可再生能源系统利用率的增加,混合电力系统对电能质量的改进作用也变得越来越重要。大多数情况下,这些混合电力系统利用柔性交流输电系统(FACTS)与高压直流(HVDC)相结合来增加网络中的功率流动。在FACTS系列中,线间潮流控制器(IPFC... 详细信息

随着可再生能源系统利用率的增加,混合电力系统对电能质量的改进作用也变得越来越重要。大多数情况下,这些混合电力系统利用柔性交流输电系统(FACTS)与高压直流(HVDC)相结合来增加网络中的功率流动。在FACTS系列中,线间潮流控制器(IPFC)用于控制两条线路之间的功率流动。直流线间潮流控制器就像一个IPFC,用于控制两条直流输电线路中的功率流动。本文介绍了一种利用直流线间潮流控制器平衡直流电网潮流的新方法。在所提出的方法中,由DC差模变压器的拓扑结构和双向降压转换器组合一起形成一个可变DMT。与现有的方法相比,所提出的系统具有可扩展性,这使其适用于高功率高压直流输电系统。在本项研究中,分析了所提出的拓扑结构,其设计参数,控制方法和案例研究。提出了两种控制方法来实现三节点直流网络中的期望功率流动。为了展示所提方法的各个方面,本文还考虑了涉及参数设计和小信号模型的补偿器的具体案例研究。为了验证整个系统的性能,增加了三端HVDC网络的仿真结果。最后,本文展示了利用简化的谐振变换器为基础的固定DMT所产生的仿真和实验结果,从而验证了所提出的方法。

关键词：高压直流(HVDC) 直流潮流线间潮流控制器(IPFC) 差模变压器(DMT) 降压转换器

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Infrastructure of Sustainable Energy Development in Pakistan:A Review

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Journal of Modern Power Systems and Clean Energy 2020年第2期8卷 206-218页

作者： Sidra Kanwal Bilal khan muhammad qasim Rauf the Department of Electrical and Computer Engineering COMSATS University IslamabadAbbottabad Campus 22010Pakistan the Department of Electrical Engineering Capital University of Science and TechnologyIslamabadPakistan

Pakistan is an energy-resourceful country with vast and untapped renewable energy sources(RESs).The wind,solar,and biomass of the country are practically capable of ending a power sector collapse caused by demand-supply variances.A significant percentage of Pakistan’s population resides in rural *** rural population,the lack of connection to the mainstream of national development is a direct consequence of frequent power blackouts and,in certain cases,a lack of grid connection *** features of smart grid are not fully incorporated into the power network yet,but policy-makers are paying attention to increase RES reliance.A comprehensive study describing the renewable energy potential of Pakistan is of *** research work attempts to present a collective summary of Pakistan’s renewable energy potential.A statistical analysis of the proposed and installed projects in various districts are *** paper elaborates the pressing needs of renewable energy integration for resolving Pakistan’s energy *** energy projects are acclaimed in this paper for affording higher living standards and better job opportunities than the fossil fuel based industry in *** RESs into the national portfolio is guaranteed to offer profound socio-economic benefits to Pakistan’s rural population.

关键词： Biomass energy geothermal energy renewable energy source(RES) solar energy smart grid wind energy

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Telepresence Robots and Controlling Techniques in Healthcare System

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Computers, Materials & Continua 2023年第3期74卷 6623-6639页

作者： Fawad Naseer muhammad Nasir khan Zubair Nawaz qasim Awais Electrical Engineering Department The University of LahoreLahorePakistan Faculty of Computing and Information Technology University of the PunjabLahorePakistan Electrical Engineering Department Fatima Jinnah Women UniversityRawalpindiPakistan

In this era of post-COVID-19,humans are psychologically restricted to interact less with other *** to the world health organization(WHO),there are many scenarios where human interactions cause severe multiplication of viruses from human to human and spread *** healthcare systems shifted to isolation during the pandemic and a very restricted work *** were done to overcome the remedy,and the researcher developed different techniques and recommended *** robot was the solution achieved by all industries to continue their operations but with almost zero physical interaction with other *** played a vital role in this perspective to help humans to perform daily routine *** workers can use telepresence robots to interact with patients who visit the healthcare center for initial diagnosis for better healthcare system performance without direct *** presented paper aims to compare different telepresence robots and their different controlling techniques to perform the needful in the respective scenario of healthcare *** paper comprehensively analyzes and reviews the applications of presented techniques to control different telepresence ***,our feature-wise analysis also points to specific technical,appropriate,and ethical challenges that remain to be *** proposed investigation summarizes the need for further multifaceted research on the design and impact of a telepresence robot for healthcare centers,building on new perceptions during the COVID-19 pandemic.

关键词： Telepresence robot controlling techniques healthcare center unmanned ground vehicle(UGV) telehealth

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Regolith thickness modeling using a GIS approach for landslide distribution analysis, NW Himalayas

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Journal of Mountain Science 2018年第11期15卷 2466-2479页

作者： muhammad BASHARAT Masood qasim muhammad SHAFIQUE Nasir HAMEED muhammad Tayyib RIAZ muhammad Rustam khan Institute of Geology University of Azad Jammu and Kashmir National Center of Excellence in Geology University of Peshawar Land Use Planning and Development Department Azad Jammu and Kashmir

Regolith thickness is considered as a contributing factor for the occurrence of ***, mostly it is ignored because of complex nature and as it requires more time and resources for investigation. This study aimed to appraise the role of regolith thickness on landslide distribution in the Muzaffarabad and surrounding areas, NW *** this purpose regolith thickness samples were evenly collected from all the lithological units at representative sites within different slope and elevation classes in the field. Topographic attributes(slope, aspect, drainage, Topographic Wetness Index,elevation and curvature) were derived from the Digital Elevation Model(DEM)(12.5 m resolution).Arc GIS Model Builder was used to develop the regolith thickness model. Stepwise regression technique was used to explore the spatial variation of regolith thickness using topographic attributes and lithological units. The derived model explains about 88% regolith thickness variation. The model was validated and shows good agreement(70%) between observed and predicted values. Subsequently, the derived regolith model was used to understand the relationship between regolith thickness and landslide distribution. The analysis shows that most of the landslides were located within 1-5 m regolith thickness. However, landslide concentration is highest within 5-10 m regolith thickness, which shows that regolith thickness played a significant role for the occurrence of landslide in the studied area.

关键词： Regolith GIS Regression Landslides Himalayas

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Robinia pseudoacacia leaves improve soil physical and chemical properties

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Journal of Arid Land 2010年第4期2卷 266-271页

作者： Babar khan Abdukadir Ablimit Rashed MAHMOOD muhammad qasim World Wide Fund for Nature Xinjiang Institute of Ecology and Geography Chinese Academy of Sciences COMSATS Institute of Information Technology

The role of the leaves of Robinia pseudoacacia L., which is widely distributed in the arid lands, on improving soil physical and chemical properties was analyzed at various incubation periods. The incubated soils added with 0, 25, 50 and 75 g Robinia pseudoacacia leaves were tested after consecutive incubation intervals of 6, 8 and 10 months and the different soil parameters were measured. The results showed the increases in organic matter (OM), extractable K, cation exchange capacity (CEC), aggregate stability and water holding capacity, but the decreases in pH value and bulk density after 6 months’ incubation. The gradual decrease in change rates of soil properties indicated less microbial population and organic residual mineralization under acidic conditions, which were resulted from fast decomposition of leaves after the first 6 months incubation. The increases in soil organic matter content, extractable K, CEC, aggregate stability and water holding capacity and the decreases in soil pH and bulk density provide favorable conditions for crop’s growth.

关键词： soil physical and chemical properties Robinia pseudoacacia Gilgit-Baltistan

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Modelling of debris-flow susceptibility and propagation: a case study from Northwest Himalaya

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Journal of Mountain Science 2024年第1期21卷 200-217页

作者： Hamza DAUD Javed Iqbal TANOLI Sardar muhammad ASIF muhammad qasim muhammad ALI Junaid khan Zahid Imran BHATTI Ishtiaq Ahmad khan JADOON Badong National Observation and Research Station of Geohazards China University of GeosciencesWuhan 430074China Department of Earth Sciences COMSATS University IslamabadAbbottabad Campus 22010Pakistan Department of Earth Sciences Sultan Qaboos UniversityAl-KhoudMascat 123Oman Faculty of Engineering China University of Geosciences(Wuhan)Wuhan 430074China Department of Earth Sciences Abbottabad University of Science and TechnologyHavelian 22500Pakistan

The geological and geographical position of the Northwest Himalayas makes it a vulnerable area for mass movements particularly landslides and debris flows. Mass movements have had a substantial impact on the study area which is extending along Karakorum Highway(KKH) from Besham to Chilas. Intense seismicity, deep gorges, steep terrain and extreme climatic events trigger multiple mountain hazards along the KKH, among which debris flow is recognized as the most destructive geohazard. This study aims to prepare a field-based debris flow inventory map at a regional scale along a 200 km stretch from Besham to Chilas. A total of 117 debris flows were identified in the field, and subsequently, a point-based debris-flow inventory and catchment delineation were performed through Arc GIS analysis. Regional scale debris flow susceptibility and propagation maps were prepared using Weighted Overlay Method(WOM) and Flow-R technique sequentially. Predisposing factors include slope, slope aspect, elevation, Topographic Roughness Index(TRI), Topographic Wetness Index(TWI), stream buffer, distance to faults, lithology rainfall, curvature, and collapsed material layer. The dataset was randomly divided into training data(75%) and validation data(25%). Results were validated through the Receiver Operator Characteristics(ROC) curve. Results show that Area Under the Curve(AUC) using WOM model is 79.2%. Flow-R propagation of debris flow shows that the 13.15%, 22.94%, and 63.91% areas are very high, high, and low susceptible to debris flow respectively. The propagation predicated by Flow-R validates the naturally occurring debris flow propagation as observed in the field surveys. The output of this research will provide valuable input to the decision makers for the site selection, designing of the prevention system, and for the protection of current infrastructure.

关键词： North Pakistan Debris flow Flow-R Propagation Susceptibility mapping Debris-flow inventory Weighted Overlay Method

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Intelligent Cloud Based Load Balancing System Empowered with Fuzzy Logic

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Computers, Materials & Continua 2021年第4期67卷 519-528页

作者： Atif Ishaq khan Syed Asad Raza Kazmi Ayesha Atta muhammad Faheem Mushtaq muhammad Idrees Ilyas Fakir muhammad Safyan muhammad Adnan khan Awais qasim Department of Computer Science Government College UniversityLahore54000Pakistan Department of Information Technology Khwaja Fareed University of Engineering and Information TechnologyRahim Yar Khan64200Pakistan Department of Computer Science and Engineering University of Engineering and Technology LahoreNarowal Campus51600Pakistan Department of Computer Science Riphah International University Lahore CampusLahore54000Pakistan

Cloud computing is seeking attention as a new computing paradigm to handle operations more efficiently and *** computing uses dynamic resource provisioning and de-provisioning in a virtualized *** load on the cloud data centers is growing day by day due to the rapid growth in cloud computing *** in cloud computing is one of the fundamental properties,and elastic load balancing automatically distributes incoming load to multiple virtual *** work is aimed to introduce efficient resource provisioning and de-provisioning for better load *** this article,a model is proposed in which the fuzzy logic approach is used for load balancing to avoid underload and overload of resources.A Simulator in Matlab is used to test the effectiveness and correctness of the proposed *** simulation results have shown that our proposed intelligent cloud-based load balancing system empowered with fuzzy logic is better than previously published approaches.

关键词： Cloud computing fuzzy logic load balancing

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Text Sentiment Analysis Using Frequency-Based Vigorous Features

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China Communications 2019年第12期16卷 145-153页

作者： Abdul Razzaq muhammad Asim Zulqrnain Ali Salman Qadri Imran Mumtaz Dost muhammad khan qasim Niaz Department of Computer Science MNS-University of AgricultureMultan60600Pakistan University of Management and Technology(UMT) Lahore54000Pakistan NFC Institute of Engineering&Technology Multan60600Pakistan Department of CS&IT The Islamia University of Bahawalpur63100Pakistan Computer Science Department University of AgricultureFaisalabad38000Pakistan Department of Computer Science Institute of Southern PunjabMultan60600Pakistan

Sentiment Analysis, an un-abating research area in text mining, requires a computational method for extracting useful information from text. In recent days, social media has become a really rich source to get information about the behavioral state of people(opinion) through reviews and comments. Numerous techniques have been aimed to analyze the sentiment of the text, however, they were unable to come up to the complexity of the sentiments. The complexity requires novel approach for deep analysis of sentiments for more accurate prediction. This research presents a three-step Sentiment Analysis and Prediction(SAP) solution of Text Trend through K-Nearest Neighbor(KNN). At first, sentences are transformed into tokens and stop words are removed. Secondly, polarity of the sentence, paragraph and text is calculated through contributing weighted words, intensity clauses and sentiment shifters. The resulting features extracted in this step played significant role to improve the results. Finally, the trend of the input text has been predicted using KNN classifier based on extracted features. The training and testing of the model has been performed on publically available datasets of twitter and movie reviews. Experiments results illustrated the satisfactory improvement as compared to existing solutions. In addition, GUI(Hello World) based text analysis framework has been designed to perform the text analytics.

关键词： text mining sentiment analysis sentiment shifters KNN

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