检索结果-南通市图书馆

ROSIC: Enhancing secure and accessible robot control through open‐source instant messaging platforms

IET Cyber-Systems and Robotics 2024年第2期6卷 35-51页

作者： Rasoul Sadeghian shahrooz shahin Sina Sareh RCA Robotics Laboratory Royal College of ArtLondonUK

Ensuring secure communication and seamless accessibility remains a primary challenge in controlling robots *** authors propose a novel approach that leverages open-source instant messaging platforms to overcome the complexities and reduce costs associated with implementing a secure and user-centred communication system for remote robot control named Robot Control System using Instant Communication(ROSIC).By leveraging features,such as real-time messaging,group chats,end-to-end encryption and cross-platform support inherent in the majority of instant messenger platforms,we have developed middleware that establishes a secure and efficient communication system over the *** using instant messaging as the communi-cation interface between users and robots,ROSIC caters to non-technical users,making it easier for them to control *** architecture of ROSIC enables various scenarios for robot control,including one user controlling multiple robots,multiple users con-trolling one robot,multiple robots controlled by multiple users,and one user controlling one ***,ROSIC facilitates the interaction of multiple robots,enabling them to interoperate and function collaboratively as a swarm system by providing a unified communication platform that allows for seamless exchange of data and *** was specifically chosen as the instant messaging platform by the authors due to its open-source nature,robust encryption,compatibility across multiple platforms and interactive communication capabilities through channels and ***,the ROSIC is designed to communicate effectively with robot operating system(ROS)-based robots to enhance our ability to control them remotely.

关键词： encryption interactive communication remote robot control secure communication

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

Effects of multipass friction stir processing and Mg addition on the microstructure and tensile properties of Al 1050 alloys

引用

International Journal of Minerals,Metallurgy and Materials 2022年第1期29卷 97-107页

作者： shahin Arshadi Rastabi Masoud Mosallaee Department of Mining and Metallurgy Yazd UniversityYazdIran

The effects of multipass friction stir processing(FSP)and Mg powder addition on the different microstructure parts,including the stir zone(SZ),heat-affected zone(HAZ),and thermomechanically affected zone(TMAZ)of Al 1050 alloy were *** observations revealed that with the increase in the number of FSP passes,the grain size of the SZ decreased in the non-composite and composite samples,whereas that of the TMAZ and HAZ increased in the non-composite ***,the addition of Mg powder resulted in considerable grain refinement,and increasing the number of the FSP passes resulted in a more uniform distribution of Al-Mg intermetallic compounds in the in-situ composite *** of the tensile test showed that the non-composite sample that underwent four passes of FSP exhibited a higher elongation percentage and a ductile fracture in comparison with those of the base metal and the composite ***,this sample exhibited a brittle fracture and a higher tensile strength in comparison with the base metal and the non-composite *** fabrication of composite samples resulted in a remarkable enhancement in hardness in comparison with the base metal and the non-composite samples that underwent FSP.

关键词： friction stir processing Al alloy magnesium tensile properties hardness

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

State-of-the-art review of some artificial intelligence applications in pile foundations

引用

Geoscience Frontiers 2016年第1期7卷 33-44页

作者： Mohamed A.shahin Department of Civil Engineering Curtin University

Geotechnical engineering deals with materials（e.g. soil and rock） that, by their very nature, exhibit varied and uncertain behavior due to the imprecise physical processes associated with the formation of these materials. Modeling the behavior of such materials in geotechnical engineering applications is complex and sometimes beyond the ability of most traditional forms of physically-based engineering methods. Artificial intelligence（AI） is becoming more popular and particularly amenable to modeling the complex behavior of most geotechnical engineering applications because it has demonstrated superior predictive ability compared to traditional methods. This paper provides state-of-the-art review of some selected AI techniques and their applications in pile foundations, and presents the salient features associated with the modeling development of these AI techniques. The paper also discusses the strength and limitations of the selected AI techniques compared to other available modeling approaches.

关键词： Artificial intelligence Pile foundations Artificial neural networks Genetic programming Evolutionary polynomial regression

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

Comparative Effect of Propolis of Honey Bee and Some Herbal Extracts on Candida Albicans

引用

Chinese Journal of Integrative Medicine 2017年第3期23卷 201-207页

作者： shahin Gavanji Behrouz Larki Young Researchers and Elite Club Isfahan (Khorasgan) BranchIslamic Azad University Isfahan Iran

Objective： To determine the effect of propolis on Candida albicans and to compare it with the effects of some other herbal extracts and antibiotics on this pathogenic fungi. Methods： The extracts of propolis, Thymus vulgaris, Caryophillium aromaticus, Echinophora platyloba, Allium cepa and Cinnamomum zeylanicumwere prepared and the antifungi effects of the extracts were examined on Candida albicans ATCC10231 using disc-diffusion assay and micro-broth dilution. The minimum fungicidal concentration（MFC） and minimum inhibitory concentrations（MIC） as well as inhibition zone were evaluated and the anti fungi effects of herbal extracts were compared with amphotricin B and nystatin at the times of 24, 48 and 72 h. Data analysis was performed using t test. Results： Obtained results showed that propolis extract with MIC90 and MFC equal to 39 and 65 μg/mL, respectively, possess the highest antifungal activity when compared with other studied extracts. The extracts of Allium cepa and Thymus vulgaris, with MFC of 169 and 137 μg/mL, respectively, showed the lowest effects on the fungi. Also nystatin and amphotricin B yielded better effects on the tested fungi compared with the effects of all studied extracts on Candida albicans. Conclusions： Propolis extract is effective in controlling Candida albicans. However, the issue requires further investigation on samples in animals and performing toxicological examinations.

关键词： Candida albicans propolis herbal extract antibiotics

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

Progressive collapse resisting capacity of reinforced concrete load bearing wall structures

引用

Journal of Central South University 2015年第7期22卷 2730-2738页

作者： Alireza Rahai Alireza shahin Farzad Hatami Department of Civil Engineering Amirkabir University of Technology (Tehran Polytechnic) No.424 Structural & Earthquake Research Center (SERC) Amirkabir University of Technology No.424

Reinforced concrete(RC) load bearing wall is widely used in high-rise and mid-rise buildings. Due to the number of walls in plan and reduction in lateral force portion, this system is not only stronger against earthquakes, but also more economical. The effect of progressive collapse caused by removal of load bearing elements, in various positions in plan and stories of the RC load bearing wall system was evaluated by nonlinear dynamic and static analyses. For this purpose, three-dimensional model of 10-story structure was selected. The analysis results indicated stability, strength and stiffness of the RC load-bearing wall system against progressive collapse. It was observed that the most critical condition for removal of load bearing walls was the instantaneous removal of the surrounding walls located at the corners of the building where the sections of the load bearing elements were changed. In this case, the maximum vertical displacement was limited to 6.3 mm and the structure failed after applying the load of 10 times the axial load bored by removed elements. Comparison between the results of the nonlinear dynamic and static analyses demonstrated that the "load factor" parameter was a reasonable criterion to evaluate the progressive collapse potential of the structure.

关键词： reinforced concrete(RC) load bearing wall structure progressive collapse fiber sections nonlinear analysis load factor 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

Yin and Yang of Body Composition Assessment

引用

Chinese Journal of Integrative Medicine 2011年第9期17卷 675-679页

作者： Ahmedov shahin School of Physical Education and Sport Near East UniversityNicosiaCyprus Mersin10Turkey

Objectve：To define if such crucial body composition parameters like body density（Db） and body surface area（BSA） could be considered in the frame of yin-yang concept,i.e.,one of the most popular in conventional biomedical science theories of Chinese ***：Standardized Eurofit Pysical Fitness Test Battery reports of 715 junior school children have been evaluated for association of their body composition parameters with corresponding motoric fitness test *** for BSA and Db calculation included height,weight,and skin-fold thickness values of the ***：Correlative analysis of major physical fitness parameters,obtained from 715 junior school children,demonstrated that participants with high BSA/Db ratio had better yang-featured anaerobic performance,whereas those with low BSA/Db ratio presented with better yin-featured aerobic *** result coincided with proposed suggestions to treat BSA as external yang component and Db as internal yin component of body *** confidence intervals for BSA/ Db ratio ranged between 1.073-1.15,which can be accepted as optimal for junior school children yang/yin ratio of body ***：Easily accessible BSA and Db can provide specialists with useful preliminary information for generating reasonable exercise and nutritional programs.

关键词： body composition yin yang body density body surface area

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

Evaluation of the ECMWF Precipitation Product over Various Regions of Iran

引用

Journal of Meteorological Research 2021年第6期35卷 1125-1135页

作者： Aminreza NESHAT shahin SHOBEIRI Ahmad SHARAFATI Department of Geographic Information System Remote SensingFaculty of Natural Resources and EnvironmentScience and Research BranchIslamic Azad UniversityTehranIran Department of Civil Engineering Science and Research BranchIslamic Azad UniversityTehranIran

Easy access to accurate and reliable climate data is a crucial concern in hydrological *** this regard,gridded climate data have recently been provided as an alternative to observational ***,those data should be first evaluated and corrected to guarantee their validity and *** study offered a new approach to assess the ECMWF gridded precipitation data based on some indicators,including correlation coefficient(CC),normalized root-mean-square error(NRMSE),and absolute error(AE)in daily and monthly intervals(2007-2017)across different climatic and geographical areas of ***,an artificial neural network(ANN)model was utilized to correct the ECMWF precipitation *** to the results,NRMSE was less than 2(in 93%of stations)and 5(in63%of stations)on monthly and daily scales,***,CC was above 0.6 in 58%and 94%of stations on daily and monthly scales,*** AE values were from-0.5 to 0.5,in 80%(daily scale)and 50%(monthly scale)of *** corrected the ECMWF precipitation product by ANN,the number of stations with NRMSE less than 5 increased from 63%to 74%on the daily timescale,whereas the number of stations with NRMSE less than 2 reached 95%from 93%on the monthly *** results also showed that the number of stations with CC more than 0.6 increased from 58%to 87%on the daily timescale.

关键词： ECMWF gridded precipitation data artificial neural network(ANN) Iran

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

Nano-tribological behavior of graphene nanoplatelet-reinforced magnesium matrix nanocomposites

引用

Journal of Magnesium and Alloys 2021年第3期9卷 895-909页

作者： Mohammad shahin Khurram Munir Cuie Wen Yuncang Li School of Engineering RMIT UniversityMelbourneVIC 3001Australia

The corrosion resistance and wear resistance of metallic biomaterials are critically important for orthopedic hard-tissue replacement applications because the lack of such properties not only adversely affects their mechanical integrity but also allows the release of wear debris into the human *** this study,the potential of zirconium(Zr)as an alloying element and graphene nanoplatelets(GNPs)as a nano-reinforcement material were investigated in relation to improving the tribological performance of pure magnesium(Mg).The GNPs-reinforced Mg matrix nanocomposites(MNCs)were fabricated using powder *** indicate that additions of 0.5 wt.%Zr and0.1 wt.%GNPs to Mg matrices significantly improved the wear resistance by 89%and 92%at 200μN load,60%and 80%at 100μN load,and 94%and 93%at 50μN load,respectively,as compared to the wear resistance of pure *** wear depth and coefficient of friction of the MNC containing 0.5 wt.%Zr and 0.1 wt.%GNPs(Mg0.5 Zr0.1 GNPs MNC)were considerably reduced as compared to pure Mg and Mg0.5 *** results demonstrate that the Mg0.5 Zr0.1 GNPs MNC is promising for orthopedic applications in relation to its excellent tribological performance.

关键词： Coefficient of friction Graphene nanoplatelet Magnesium matrix nanocomposite Wear

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

Angiographic characteristics of central serous chorioretinopathy in an Egyptian population

引用

International Journal of Ophthalmology(English edition) 2013年第3期6卷 342-345页

作者： Maha M shahin Mansoura Faculty of Medicine Mansoura University

· AIM: To describe and analyze the demographic characteristics and to determine the angiographic features of acute central serous chorioretinopathy(CSCR) in an Egyptian population. ·METHODS: A series of consecutive patients presenting with acute idiopathic CSCR to Mansoura Ophthalmology Center Mansoura University who underwent fluorescein angiography (FA) within a 3 -year -period (between January 1, 2007 and December 31, 2009) was retrospectively studied. Patient demographics and angiographic features were studied. Results were compared to those of other Western and Asian populations. ·RESULTS: Fluorescein angiograms of 86 patients were analyzed. 91% were males. The age range of patients was 24 -49 years, with a mean age of (38±6) years. The right eye was the presenting eye in 47% of patients. Eighty seven percent of eyes showed delayed choroidal filling. Thirty -five percent of patients had more than one point of leakage. The macula was the most common site of fluorescein leakage seen in 79% of patients. Peripheral leakage was seen in 14% of patients while peripapillary leakage was seen in 12% of patients. The inkblot leakage pattern was found in 53% of patients. The presenting eye had RPE atrophic changes in 84% of cases. The other eye was assessed in 44 patients (51%). Fifty-five percent of them had signs of RPE atrophic changes. ·CONCLUSION: In the Egyptian population, CSCR is seen at younger age with higher male -to -female ratio and more frequent smokestack leaks than other populations. Despite younger age group, this series of patient showed higher frequency of bilateral and multifocal disease compared to other studies. Roles of psychological stress and choroidal ischemia in pathogenesis of CSCR need further evaluation. ·

关键词： choroidal circulation central serous chorioretinopathy epidemiology fluorescein angiography medical retina

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

Effect of overburden pressure on determination of reservoir rock types using RQI/FZI,FZI^* and Winland methods in carbonate rocks

引用

Petroleum Science 2019年第6期16卷 1403-1416页

作者： Aboozar Soleymanzadeh Saeed Parvin shahin Kord Ahwaz Faculty of Petroleum Petroleum University of Technology(PUT)AhwazIran

Rock typing is an important tool in evaluation and performance prediction of *** techniques such as flow zone indicator(FZI),FZI~*and Winland methods are used to categorize reservoir rocks into distinct rock ***,these methods are applied to petrophysical data that are measured at a pressure other than reservoir *** the pressure changes the pore structure of rock,the effect of overburden pressure on rock typing should be *** this study,porosity and permeability of 113 core samples were measured at five different *** investigate the effect of pressure on determination of rock types,FZI,FZI~*and Winland methods were *** indicated that although most of the samples remain in the same rock type when pressure changes,some of them show different *** are related to the mineralogy and changes in pore system of the samples due to pressure ***,the number of rock types increases with increasing ***,the effect of overburden pressure on determination of rock types is more clearly observed in the Winland and FZI~****,results revealed that a more precise reservoir dynamic simulation can be obtained by considering the reservoir rock typing process at reservoir conditions.

关键词： Overburden pressure Carbonate rocks Rock type Reservoir quality index Flow zone indicator Winland 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

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：