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Search for a lighter Higgs boson in the Next-to-minimal Supersymmetric Standard model

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Chinese Physics C 2018年第10期42卷 51-58页

作者： Jun-Quan Tao m.aamir shahzad Si-Jing Zhang Chu Wang Yu-Qiao Shen Guo-ming Chen He-Sheng Chen S.Gascon-Shotkina L.Finco C.Camen Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China University of Chinese Academy of Sciences Beijing 100049China Institut de Physique Nucleaire de Lyon Universite de LyonUniversite Claude Bernard Lyon 1CNRS-IN2P3Villeurbanne 69622France Changzhou Institute of Technology Changzhou 213032China

Following the discovery of the Higgs boson with a mass of approximately 125 GeV at the LHC, many studies have been performed from both the theoretical and experimental viewpoints to search for a new Higgs Boson that is lighter than 125 GeV. We explore the possibility of constraining a lighter neutral scalar Higgs boson hi and a lighter pseudo-scalar Higgs boson al in the Next-to-minimal Supersymmetric Standard model by restricting the next-to-lightest scalar Higgs boson h2 to be the one observed at the LHC after applying the phenomenological constraints and those from experimental measurements. Such lighter particles are not yet completely excluded by the latest results of the search for a lighter Higgs boson in the diphoton decay channel from LHC data. Our results show that some new constraints on the Next-to-minimal Supersymmetric Standard model could be obtained for a lighter scalar Higgs boson at the LHC if such a search is performed by experimental collaborations and more data. The potentials of discovery for other interesting decay channels of such a lighter neutral scalar or pseudo-scalar particle are also discussed.

关键词： Next-to-minimal Supersymmetric Standard model lighter Higgs boson discovery potentials

An Implementation of multiscale Line Detection and mathematical morphology for Efficient and Precise Blood Vessel Segmentation in Fundus Images

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Computers, materials & Continua 2024年第5期79卷 2565-2583页

作者： Syed Ayaz Ali Shah aamir shahzad musaed Alhussein Chuan meng Goh Khursheed Aurangzeb Tong Boon Tang muhammad Awais Department of Electrical and Computer Engineering COMSATS University IslamabadAbbottabad CampusAbbottabad22060Pakistan Department of Computer Engineering College of Computer and Information SciencesKing Saud UniversityP.O.Box 51178Riyadh11543Saudi Arabia Faculty of Information and Communication Technology University Tunku Abdul RehmanKampar CampusKampar31900Malaysia Centre for Intelligent Signal and Imaging Research University Teknologi PETRONASBandar Seri IskandarPerak32610Malaysia School of Computing Sciences University of East AngliaNorwichNR47TJUK

Diagnosing various diseases such as glaucoma,age-related macular degeneration,cardiovascular conditions,and diabetic retinopathy involves segmenting retinal blood *** task is particularly challenging when dealing with color fundus images due to issues like non-uniformillumination,low contrast,and variations in vessel appearance,especially in the presence of different ***,the speed of the retinal vessel segmentation system is of utmost *** the surge of now available big data,the speed of the algorithm becomes increasingly important,carrying almost equivalent weightage to the accuracy of the *** address these challenges,we present a novel approach for retinal vessel segmentation,leveraging efficient and robust techniques based on multiscale line detection and mathematical *** algorithm’s performance is evaluated on two publicly available datasets,namely the Digital Retinal Images for Vessel Extraction dataset(DRIVE)and the Structure Analysis of Retina(STARE)*** experimental results demonstrate the effectiveness of our method,withmean accuracy values of 0.9467 forDRIVE and 0.9535 for STARE datasets,aswell as sensitivity values of 0.6952 forDRIVE and 0.6809 for STARE ***,our algorithmexhibits competitive performance with state-of-the-art ***,it operates at an average speed of 3.73 s per image for DRIVE and 3.75 s for STARE *** is worth noting that these results were achieved using matlab scripts containing multiple *** suggests that the processing time can be further reduced by replacing loops with *** the proposed algorithm can be deployed in real time *** summary,our proposed system strikes a fine balance between swift computation and accuracy that is on par with the best available methods in the field.

关键词： Line detector vessel detection localization mathematical morphology image processing

Global export flow of Chilean copper:The role of environmental innovation and renewable energy transition

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Geoscience Frontiers 2024年第3期15卷 336-345页

作者： Shujaat Abbas Najia Saqib Umer shahzad Graduate School of Economics and management Ural Federal UniversityRussian Federation Brandenburg University of Technology Chair of Energy EconomicsGermany Adnan Kassar School of Business Lebanese American UniversityBeirutLebanon mEU Research Unit Middle East UniversityAmmanJordan Department of Finance College of Business AdministrationPrince Sultan UniversityRiyadhSaudi Arabia Department of Trade and Finance Faculty of Economics and ManagementCzech University of Life Sciences Prague

Copper is one of the most important minerals that has extensive use in environment-friendly technologies and renewable energy *** global urgency for environmental and ecological conservation through renewable energy transition has considerably enhanced the importance of copper and articles *** is a major producer of *** contributes more than one-third to global ***,this study explores the export flow of Chilean copper in response to increasing demand side conditions in major 24 trading partners from 2002 to *** objective is realized by constructing an augmented model for import demand that incorporates bilateral real exchange rate along with real GDP,environmental innovation,and renewable energy transition in major import *** estimated results of panel quantiles via moments techniques reveal a significant positive impact with increasing coefficients at higher quantiles,while environmental innovation and renewable energy transition in trading partners show significant positive impact with decreasing values of coefficients at higher *** findings urge Chile to enhance production capacity of copper and other critical mineral and improve participation in global value chain to meet sharply increasing copper demand from environmental innovation and renewable energy transition.

关键词： Copper Export flow Renewable energy Environmental innovation Panel data Quantiles via moments

Resource savings,recycling and utilization,and energy transition:Introduction

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Geoscience Frontiers 2024年第3期15卷 180-182页

作者： Xin Zhao Umer shahzad Aviral Kumar Tiwari School of Statistics and Applied mathematics Anhui University of Finance and EconomicsBengbu 233030China School of Economics Széchenyi Istvàn UniversityHungary Adnan Kassar School of Business Lebanese American UniversityBeirutLebanon Indian Institute of management Bodh Gaya Bodh GayaBiharIndia

In the context of increasingly tight constraints on global resources and environment,accelerating the conservation and recycling of fossil fuels and other mineral resources have become significant *** promoting the transformation of energy development mode,and making efficient use of coal,oil,natural gas,iron ore,potassium salts,phosphate,sulfur and other mineral resources have become important issues in energy planning and energy *** the framework of Sustainable Development Goals,it is urgent and critical to investigate the relationship between geological resource saving,recycling and modern energy systems,which is an important step to establish a complete system of efficient use of natural resources.

关键词： energy transition recycling

(Sm/Eu/Tm)^(3+) doped tantalum semiconductor system for photovoltaic and electrochemical functionality amplification

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Journal of Rare Earths 2024年第8期42卷 1586-1594,I0007页

作者： Shaan Bibi Jaffri Khuram shahzad Ahmad Isaac Abrahams Ibrahim A.A materials and Environmental Chemistry Lab Lab-E21Department of Environmental SciencesFatima Jinnah Women UniversityRawalpindiPakistan School of Physical and Chemical Sciences Queen Mary University of LondonLondonUnited Kingdom Department of Botany and microbiology College of ScienceKing Saud UniversityP.O.Box 2455Riyadh11451Saudi Arabia

This work reports the synthesis,characterization,and energy focused applications of the novel lanthanides co-doped tantalum pentoxide hetero-system(Sm^(3+)-Eu^(3+)-Tm^(3+):Ta_(2)O_(5)).Ln^(3+)-doped Ta_(2)O_(5) express excellent opto-electronic features reflected by the narrow band gap energy of 3.87 *** vibrations confirm the presence of Ta-O-Ta and Ta-O *** synthesized system possesses orthorhombic geometry with 59.46 nm particle *** the smoother and compact morphology,the synthesized material succeeds in augmenting the performance of different systems aimed at energy *** ambient perovskite solar cell device fabricated with the Ln^(3+)-doped Ta_(2)O_(5) as an electron transport layer excels in achieving an efficiency and fill factor of 14.17% and 76% under artificial *** device was marked by the negligible hysteresis behavior showing profound photovoltaic *** electrochemical activity of the Ln^(3+)-doped Ta_(2)O_(5) decorated electrode was evaluated for electrical charge storage potential with pseudocapacitive behavior,With the highest specific capacitance of 355.39 F/g and quicker ionic diffusion rate,the designed electrode excels conventionally used ***-catalysis of water with Ln^(3+)-doped Ta_(2)O_(5) material indicates its capacity for H_(2) production with the lowest overpotential and Tafel slope values of 148 and 121.2 mV/dec,while the O_(2) generation is comparatively *** the stable electrochemical output,this rare earth modified material has the potential to replace conventionally used environmentally perilous and costly materials.

关键词： Lanthanide doping Rare earth materials Perovskite solar cells Supercapacitors Water splitting

Improved Proximal Policy Optimization Algorithm for Sequential Security-constrained Optimal Power Flow Based on Expert Knowledge and Safety Layer

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Journal of modern Power Systems and Clean Energy 2024年第3期12卷 742-753页

作者： Yanbo Chen Qintao Du Honghai Liu Liangcheng Cheng muhammad shahzad Younis State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources and School of Electrical&Electronic Engineering North China Electric Power UniversityBeijing 102206China School of Engineering Xining UniversityXining 810008Chinaand Key Laboratory of Smart Operation of New Energy Power SystemMinistry of EducationQinghai UniversityXining 810016China China Electric Power Research Institute Nanjing 210003China National University of Sciences and Technology Islamabad44000Pakistan

In recent years,reinforcement learning(RL)has emerged as a solution for model-free dynamic programming problem that cannot be effectively solved by traditional optimization *** has gradually been applied in the fields such as economic dispatch of power systems due to its strong selflearning and self-optimizing ***,existing economic scheduling methods based on RL ignore security risks that the agent may bring during exploration,which poses a risk of issuing instructions that threaten the safe operation of power ***,we propose an improved proximal policy optimization algorithm for sequential security-constrained optimal power flow(SCOPF)based on expert knowledge and safety layer to determine active power dispatch strategy,voltage optimization scheme of the units,and charging/discharging dispatch of energy storage *** expert experience is introduced to improve the ability to enforce constraints such as power balance in training process while guiding agent to effectively improve the utilization rate of renewable ***,to avoid line overload,we add a safety layer at the end of the policy network by introducing transmission constraints to avoid dangerous actions and tackle sequential SCOPF *** results on an improved IEEE 118-bus system verify the effectiveness of the proposed algorithm.

关键词： Sequential security-constrained optimal power flow(SCOPF) expert experience safety layer renewable energy safe reinforcement learning

Development of Sustainable Wireless Resource model through Shrewd Neural Network

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Data Intelligence 2024年第3期6卷 649-665页

作者： shahzad Ashraf Furqan memon Fouzia Akram Zeeshan Rasheed shahzad Sarwar Bhattit Innam Ullah NFC Institute of Engineering and Technology multan Pakistan DHA Suffa University Karachi Pakistan mir Chakar Khan Rind University Sibi Pakistan Emerson University multan Pakistan Gachon University Seongnam 13120Republic of Korea

Due to an increasing number of wireless spectrums,the network components are tangling with multiple frequencies and the result create hindrance in resource management *** resource management process,data leakage is one of the sensitive enigma that requires an astute *** all these issues,a sustainable wireless resource management proposal(DSWR-SNN)has been developed by incorporating a shrewd Neural *** resources are managed by testing performance of each network component connected wirelessly through dataset testing which matches the results from the dataset *** performance of the proposed DSWR-SNN method has been compared with state of the art studies Hopfield Neural Network(HNN),Radio Resource management(RRm),and Deep Q-Network(DQN),and results are evaluated by conducting simulation using Python with TensorFlow based on Bandwidth Utilization,Duplicate Packet Handling,Data Leakage,and Energy *** result illustrates the marvelous performance of the proposed method and effective in addressing the challenges of resource allocation in wireless communication systems.

关键词： Neural network Sustainable resources Dataset testing Dataset corpus,Data leakage

Clinical applications of stem cell-derived exosomes

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Signal Transduction and Targeted Therapy 2024年第2期9卷 621-651页

作者： Fei Tan Xuran Li Zhao Wang Jiaojiao Li Khawar shahzad Jialin Zheng Department of ORL-HNS Shanghai Fourth People’s Hospitaland School of MedicineTongji UniversityShanghaiChina Plasma medicine and Surgical Implants Center Tongji UniversityShanghaiChina The Royal College of Surgeons in Ireland DublinIreland The Royal College of Surgeons of England LondonUK Center for Translational Neurodegeneration and Regenerative Therapy Tongji Hospital affiliated to Tongji University School of MedicineShanghaiChina Shanghai Frontiers Science Center of Nanocatalytic medicine Tongji UniversityShanghaiChina

Although stem cell-based therapy has demonstrated considerable potential to manage certain diseases more successfully than conventional surgery,it nevertheless comes with inescapable drawbacks that might limit its clinical *** to stem cells,stem cell-derived exosomes possess numerous advantages,such as non-immunogenicity,non-infusion toxicity,easy access,effortless preservation,and freedom from tumorigenic potential and ethical *** can inherit similar therapeutic effects from their parental cells such as embryonic stem cells and adult stem cells through vertical delivery of their pluripotency or *** a thorough search and meticulous dissection of relevant literature from the last five years,we present this comprehensive,up-to-date,specialty-specific and disease-oriented review to highlight the surgical application and potential of stem cell-derived *** derived from stem cells(e.g.,embryonic,induced pluripotent,hematopoietic,mesenchymal,neural,and endothelial stem cells)are capable of treating numerous diseases encountered in orthopedic surgery,neurosurgery,plastic surgery,general surgery,cardiothoracic surgery,urology,head and neck surgery,ophthalmology,and obstetrics and *** diverse therapeutic effects of stem cells-derived exosomes are a hierarchical translation through tissue-specific responses,and cell-specific molecular signaling *** this review,we highlight stem cell-derived exosomes as a viable and potent alternative to stem cell-based therapy in managing various surgical *** recommend that future research combines wisdoms from surgeons,nanomedicine practitioners,and stem cell researchers in this relevant and intriguing research area.

关键词： viable stem capable

Financial inclusion and carbon emissions in Asia:Implications for environmental sustainability

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Economic and Political Studies 2024年第1期12卷 88-104页

作者： shahzad Hussain Tanveer Ahmad Sabeeh Ullah Ajid Ur Rehmand Syed Jawad Hussain shahzad Department of Business Administration Rawalpindi Women UniversityRawalpindiPakistan Institute of Business Studies Kohat University of Science and TechnologyKohatPakistan Institute of Business and management Sciences Faculty of Management and Computer SciencesThe University of AgriculturePeshawarPakistan NUST Business School National University of Sciences and TechnologyIslamabadPakistan Finance Control and Law DepartmentMontpellier Business SchoolMontpellierFrance

This study explores how carbon emissions are affected by financial *** a balanced panel data set of 26 Asian countries,we compute a composite index,through the principal component analysis(PCA)technique,of financial inclusion based on a set of attributes related to financial *** main analysis also delineates the subsamples of developed and developing Asian *** results reveal a long(short)-run positive(negative)impact of financial inclusion on carbon emissions across the Asian *** finding is also true for the developed country subsample,implying nonlinearity in shortand long-run *** the developing countries,a more pronounced long-run positive impact compared to developed countries is ***,the pairwise causality test results indicate the existence of bi-directional causality between financial inclusion and carbon *** findings have important policy implications,especially in the context of the strategic integration of financial inclusion and climate change strategies.

关键词： Financial inclusion CO2 emissions climate change sustainable development Asian countries