检索结果-南通市图书馆

Phonon Thermal Transport at Interfaces of a Graphene/Vertically Aligned Carbon Nanotubes/Hexagonal Boron Nitride Sandwiched Heterostructure

引用

Chinese Physics Letters 2024年第1期41卷 57-62页

作者：李檬璘 muhammad asif Shakoori 王瑞鹏李海鹏 School of Materials Science and Physics China University of Mining and TechnologyXuzhou 221116China

Molecular dynamics simulation is used to calculate the interfacial thermal resistance of a graphene/carbon nanotubes/hexagonal boron nitride(Gr/CNTs/hBN)sandwiched heterostructure,in which vertically aligned carbon nanotube(VACNT)arrays are covalently bonded to graphene and hexagonal boron nitride *** find that the interfacial thermal resistance(ITR)of the Gr/VACNT/hBN sandwiched heterostructure is one to two orders of magnitude smaller than the ITR of a Gr/hBN van der Waals heterostructure with the same plane *** is observed that covalent bonding effectively enhances the phonon coupling between Gr and hBN layers,resulting in an increase in the overlap factor of phonon density of states between Gr and hBN,thus reducing the ITR of Gr and *** addition,the chirality,size(diameter and length),and packing density of sandwich-layer VACNTs have an important influence on the ITR of the *** the same CNT diameter and length,the ITR of the sandwiched heterostructure with armchair-shaped VACNTs is higher than that of the sandwiched heterostructure with zigzag-shaped VACNTs due to the different chemical bonding of chiral CNTs with Gr and *** the armchair-shaped CNT diameter increases or the length decreases,the ITR of the sandwiched heterostructure tends to ***,the increase in the VACNT packing density also leads to a continuous decrease in the ITR of the sandwiched heterostructure,attributed to the extremely high intrinsic thermal conductivity of CNTs and the increase of out-of-plane heat transfer *** work may be helpful for understanding the mechanism for ITR in multilayer vertical heterostructures,and provides theoretical guidance for a new strategy to regulate the interlayer thermal resistance of heterostructures by optimizing the design of sandwich layer thermal interface materials.

关键词： sandwich shaped packing

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

A Comprehensive Systematic Review: Advancements in Skin Cancer Classification and Segmentation Using the ISIC Dataset

引用

Computer Modeling in Engineering & Sciences 2024年第9期140卷 2131-2164页

作者： Madiha Hameed Aneela Zameer muhammad asif Zahoor Raja Department of Computer Sciences Pakistan Institute of Engineering and Applied SciencesNilore50700Islamabad Future Technology Research Center National Yunlin University of Science and TechnologyDouliou64002TaiwanChina Directorate of IT Services University of GujratGujrat50700Pakistan

The International Skin Imaging Collaboration(ISIC)datasets are pivotal resources for researchers in machine learning for medical image analysis,especially in skin cancer *** datasets contain tens of thousands of dermoscopic photographs,each accompanied by gold-standard lesion diagnosis *** challenges associated with ISIC datasets have spurred significant advancements,with research papers reporting metrics surpassing those of human *** cancers are categorized into melanoma and non-melanoma types,with melanoma posing a greater threat due to its rapid potential for metastasis if left *** paper aims to address challenges in skin cancer detection via visual inspection and manual examination of skin lesion images,processes historically known for their *** notable advancements in machine learning and deep learning models,persistent challenges remain,largely due to the intricate nature of skin lesion *** review research on convolutional neural networks(CNNs)in skin cancer classification and segmentation,identifying issues like data duplication and augmentation *** explore the efficacy of Vision Transformers(ViTs)in overcoming these challenges within ISIC dataset *** leverage their capabilities to capture both global and local relationships within images,reducing data duplication and enhancing model ***,ViTs alleviate augmentation issues by effectively leveraging original *** a thorough examination of ViT-based methodologies,we illustrate their pivotal role in enhancing ISIC image classification and *** study offers valuable insights for researchers and practitioners looking to utilize ViTs for improved analysis of dermatological ***,this paper emphasizes the crucial role of mathematical and computational modeling processes in advancing skin cancer detection methodologies,highlighting their significance in improving algorithmic

关键词： Medical image skin cancer classification skin cancer segmentation international skin imaging collaboration convolutional neural network deep learning

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

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

引用

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

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Design of an Efficient and Provable Secure Key Exchange Protocol for HTTP Cookies

引用

Computers, Materials & Continua 2024年第7期80卷 263-280页

作者： Waseem Akram Khalid Mahmood Hafiz Burhan ul Haq muhammad asif Shehzad Ashraf Chaudhry Taeshik Shon Graduate School of Engineering Science and Technology National Yunlin University of Science and TechnologyYunlin64002TaiwanChina Future Technology Research Center National Yunlin University of Science and TechnologyYunlin64002TaiwanChina Department of Computer Science Lahore Garrison UniversityLahore54920Pakistan Department of Computer Science and Information Technology College of EngineeringAbu Dhabi UniversityAbu Dhabi69911United Arab Emirates Department of Software Engineering Faculty of Engineering and ArchitectureNisantasi UniversityIstanbul34398Turkey Department of Cybersecurity Ajou UniversitySuwon16499Republic of Korea

Cookies are considered a fundamental means of web application services for authenticating various Hypertext Transfer Protocol(HTTP)requests andmaintains the states of clients’information over the *** cookies are exploited to carry client patterns observed by a *** client patterns facilitate the particular client’s future visit to the corresponding ***,security and privacy are the primary concerns owing to the value of information over public channels and the storage of client information on the *** protocols have been introduced that maintain HTTP cookies,but many of those fail to achieve the required security,or require a lot of resource *** this article,we have introduced a lightweight Elliptic Curve Cryptographic(ECC)based protocol for authenticating client and server transactions to maintain the privacy and security of HTTP *** proposed protocol uses a secret key embedded within a *** proposed protocol ismore efficient and lightweight than related protocols because of its reduced computation,storage,and communication ***,the analysis presented in this paper confirms that proposed protocol resists various known attacks.

关键词： Cookies authentication protocol impersonation attack ECC

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Understanding the low temperature electrochemistry of magnesium-lithium hybrid ion battery in all-phenyl-complex solutions

引用

Journal of Energy Chemistry 2021年第5期30卷 383-390页

作者： muhammad Rashad muhammad asif School of Materials Science and Engineering Jiangsu University of Science and TechnologyZhenjiang 212003JiangsuChina Bernal Institute Department of Chemical SciencesUniversity of LimerickLimerick V94 T9PXIreland

Magnesium-lithium hybrid ion batteries have emerged as a new class of energy storage systems owing to dendrite free cycling of magnesium anode and possibility of practice of numerous conventional lithium *** present work,we used hybrid ion strategy to analyze the performance of lithium titanate based lithium cathode,magnesium metal anode,and all-phenyl complex(APC)electrolytes at different temperatures(25℃,10℃,0℃,-10℃,and-20℃).The hybrid ion battery exhibited excellent rate performance(228 m Ah g^(-1)/20 m A g^(-1) and 163 mAh g^(-1)/1000 mA g^(-1))with stable voltage plateaus at 0.90 and 0.75 V,which corresponds to specific energy of 178 Wh kg^(-1) at room temperature(25℃).Experimental results revealed that APC-THF solutions have strong potential to suppress the freezing of electrolyte solutions owing to low boiling point of *** low temperature electrochemical testing revealed the reversible capacities of 213.4,165.5,143.8,133.2 and 78.56 mAh g^(-1) at 25,10,0,-10,and-20℃,***,ex-situ XRD,SEM,and EIS tests were carried out to understand the reaction kinetics of both Mg2+and Li+ions inside the lithium titanate *** hope this work will shed light on low temperature prospective of electrochemical devices for use in cold environments.

关键词： Mg ion battery Mg-Li hybrid ion batteries Electrochemical properties Low temperature Energy storage

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Ironclad Friendship Between Pakistan and China Interview with muhammad asif Noor

引用

China News Release 2022年第6期 7-10页

作者： Zhu Lili muhammad asif Noor 不详 Institute of Peace and Diplomatic Studies Pak-SCO Friendship Forum Friends of BRI Forum

CHINA NEWS RELEASE:China and Pakistan have always regarded each other as an“ironclad friend,”and the bilateral relations are rock *** do you view the bilateral relations as well as the friendship between the Chinese and Pakistani peoples?muhammad asif Noor:Pakistan gained independence in 1947 and the People’s Republic of China was founded in *** two countries officially established their diplomatic relations in *** the past seven decades.

关键词： Pakistan independence gained

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

省水船闸闸底水平分流式连通廊道布置形式优化

引用

水运工程 2024年第9期 79-85页

作者：陈明张萌杨岚彬黄海津张忠原 asif muhammad 重庆交通大学水利水运工程教育部重点实验室重庆400074

省水船闸闸墙长廊道侧支孔输水系统通常采用闸底水平分流式连通廊道布置形式,以减少工程开挖量,分流均匀性是此类船闸输水过程的核心难题。针对该问题,依托我国某省水船闸工程,采用三维水流数值模拟方法对其连通廊道布置形式进行优化研... 详细信息

省水船闸闸墙长廊道侧支孔输水系统通常采用闸底水平分流式连通廊道布置形式,以减少工程开挖量,分流均匀性是此类船闸输水过程的核心难题。针对该问题,依托我国某省水船闸工程,采用三维水流数值模拟方法对其连通廊道布置形式进行优化研究。结果表明:增大连通廊道与闸墙长廊道的接口面积,可有效改善两侧支廊道流量震荡问题。连通廊道水平分流口两侧宽度与分流墩两侧半径间的比值K表征分流口两侧分流的均匀性,当K=1.064时,两侧支廊道分流均匀性、闸室支孔出流均匀性及水流条件较佳。研究成果可为类似省水船闸连通廊道布置提供技术参考。

关键词：船闸水平分流连通廊道流量分配数值模拟

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Unsupervised neural networks for solving Troesch＇s problem

引用

Chinese Physics B 2014年第1期23卷 546-556页

作者： muhammad asif Zahoor Raja Department of Electrical Engineering COMSATS Institute of Information Technology Attock Campus Attock Pakistan

In this study, stochastic computational intelligence techniques are presented for the solution of Troesch's boundary value problem. The proposed stochastic solvers use the competency of a feed-forward artificial neural network for mathematical modeling of the problem in an unsupervised manner, whereas the learning of unknown parameters is made with local and global optimization methods as well as their combinations. Genetic algorithm (GA) and pattern search (PS) techniques are used as the global search methods and the interior point method (IPM) is used for an efficient local search. The combination of techniques like GA hybridized with IPM (GA-IPM) and PS hybridized with IPM (PS-IPM) are also applied to solve different forms of the equation. A comparison of the proposed results obtained from GA, PS, IPM, PS-IPM and GA-IPM has been made with the standard solutions including well known analytic techniques of the Adomian decomposition method, the variational iterational method and the homotopy perturbation method. The reliability and effectiveness of the proposed schemes, in term of accuracy and convergence, are evaluated from the results of statistical analysis based on sufficiently large independent runs.

关键词： Troesch’s problem artificial neural network genetic algorithm hybrid methods

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Identification of Anomalous Behavioral Patterns in Crowd Scenes

引用

Computers, Materials & Continua 2022年第4期71卷 925-939页

作者： muhammad asif Nauman muhammad Shoaib Department of Computer Engineering University of Engineering and TechnologyLahorePakistan

Real time crowd anomaly detection and analyses has become an active and challenging area of research in computer vision since the last *** emerging need of crowd management and crowd monitoring for public safety has widen the countless paths of deep learning methodologies and ***,researchers have developed many sophisticated algorithms but still it is a challenging and tedious task to manage and monitor crowd in real *** proposed research work focuses on detection of local and global anomaly detection of *** of spatial-temporal features assist in differentiation of feature trained using Mask R-CNN with Resnet101 as a backbone architecture for feature *** data from,BIWI Walking Pedestrian dataset and the Crowds-By-Examples(CBE)dataset and Self-Generated dataset has been used for *** data deals with different situations like one set of data deals with normal situations like people walking and acting individually,in a group or in a dense *** other set of data contains images four unique anomalies like fight,accident,explosion and people behaving *** simulated results show that in terms of precision and recall,our system performs well with Self-Generated ***,our system uses an early stopping mechanism,which allows our system to outperform to make our model *** is why,on 89th epoch our system starts generating finest results.

关键词： Mask R-CNN crowd management and monitoring precision and recall

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

中国主题出版图书在巴基斯坦的发行情况研究——基于读者阅读习惯和态度的问卷分析调查

引用

印刷文化（中英文） 2024年第2期 167-190页

作者：刘扬穆罕默德·阿希衡阳师范学院新闻与传播学院湖南科技学院传媒学院

“一带一路”,语言先行。主题出版图书作为承载文字的载体,是中国向世界宣传自己的重要媒介。本研究采用调查设计和随机抽样等方法,利用“中国,中文,,”等关键词,对巴基斯坦11家在线书店和出版商投递了问卷。通过回收的300份受访者数据... 详细信息

“一带一路”,语言先行。主题出版图书作为承载文字的载体,是中国向世界宣传自己的重要媒介。本研究采用调查设计和随机抽样等方法,利用“中国,中文,,”等关键词,对巴基斯坦11家在线书店和出版商投递了问卷。通过回收的300份受访者数据发现,中国主题出版图书得到越来越多巴基斯坦读者的青睐。从阅读类型来看,中国的小说、散文等文学作品受到巴基斯坦民众的热捧,相较英文版翻译图书,他们更习惯于阅读中译乌尔都语的读本。同时,随着技术的进步和智能手机的广泛应用,较纸质书而言,巴基斯坦民众更加喜欢易携带、易查阅、更廉价的电子书籍。这项研究的推进对未来推动中国在巴主题出版图书的出版和发行,改进出版物的形式和内容,扩大中国在海外的影响力,实现多平台、全链条的传播途径提供了可参照的数据支撑。

关键词： “一带一路” 巴基斯坦中国主题出版

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：