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Iraq and China Create Better Future for Strategic Partnership

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中国新闻发布(英文版) 2023年第6期 38-40页

作者： Shorsh Khalid said 不详

The Republic of Iraq in the southwest of Asia and the northeast of Arabian Peninsula is located in the Tigris-Euphrates Basin. It is a geographically unique place as it links Europe and North Africa to the west and Central Asia to the east. Historically, it served as the political, economic, and cultural center of the Arab Caliphate and was a shining pearl on the Silk Road.

关键词： Create northeast southwest

Progressive collapse of 2D reinforced concrete structures under sudden column removal

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Frontiers of Structural and Civil Engineering 2020年第6期14卷 1387-1402页

作者： EI Houcine MOURID said MAMOURI Adnan IBRAHIMBEGOVIC Mechanics of Structures Laboratory MechanicsModeling and Experimentation Laboratory.Department of Mechanical EngineeringUniversity of Tahri Mohamed-Bechar Bechar 08000Algeria Roberal Mechanics laboratory Alliance Sorbonne UniversiyCompiegne 60203France

Once a column in building is removed due to gas explosion,vehicle impact,terrorist attack,earthquake or any natural disaster,the loading supported by removed column transfers to neighboring structural *** these elements are unable to resist the supplementary loading,they continue to fail,which leads to progressive collapse of *** this paper,an efficient strategy to model and simulate the progressive collapse of multi-story reinforced concrete structure under sudden column removal is *** strategy is subdivided into several connected steps including failure mechanism creation,MBS dynamic analysis and dynamic contact simulation,the latter is solved by using conserving/decaying scheme to handle the stiff nonlinear dynamic *** effect of gravity loads,structure-ground contact,and structure-structure contact are accounted for as *** main novelty in this study consists in the introduction of failure function,and the proper manner to control the mechanism creation of a frame until its total ***,this contribution pertains to a very thorough investigation of progressive collapse of the structure under sudden column *** proposed methodology is applied to a six-story frame,and many different progressive collapse scenarios are *** results ilustrate the efficiency of the proposed strategy.

关键词： failure mechanism MBS dynamic analysis gravity loads structure-ground contact structure-structure contact energy conserving decaying scheme

APPLICATION OF MULTI-DIMENSIONAL OF CONFORMABLE SUMUDU DECOMPOSITION METHOD FOR SOLVING CONFORMABLE SINGULAR FRACTIONAL COUPLED BURGER'S EQUATION

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Acta Mathematica Scientia 2021年第5期41卷 1679-1698页

作者： Hassan ELTAYEB said MESLOUB Mathematics Department College of ScienceKing Saud UniversityP.O.Box 2455Riyadh 11451Saudi Arabia

In this article,several theorems of fractional conformable derivatives and triple Sumudu transform are given and *** on these theorems,a new conformable triple Sumudu decomposition method(CTSDM)is intrduced for the solution of singular two-dimensional conformable functional Burger's *** method is a combination of the decomposition method(DM)and Conformable triple Sumudu *** exact and approximation solutions obtained by using the suggested method in the sense of *** examples are given to clarify the possible application of the achieved results and the exact and approximate solution are sketched by using Matlab software.

关键词： conformable double Sumudu transform conformable fractional coupled Burgers'equations conformable fractional derivative conformable single Sumudu transform

Vegetable Oil-Based Nanolubricants in Machining:From Physicochemical Properties to Application

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Chinese Journal of Mechanical Engineering 2023年第4期36卷 4-42页

作者： Xiaotian Zhang Changhe Li Zongming Zhou Bo Liu Yanbin Zhang Min Yang Teng Gao Mingzheng Liu Naiqing Zhang Zafar said Shubham Sharma Hafiz Muhammad Ali School of Mechanical and Automotive Engineering Qingdao University of TechnologyQingdao 266520China Hanergy(Qingdao)Lubrication Technology Co. Ltd.Qingdao 266200China Sichuan Future Aerospace Industry LLC. Shifang 618400China Shanghai Jinzhao Energy Saving Technology Co. Ltd.Shanghai 200436China Department of Sustainable and Renewable Energy Engineering University of Sharjah27272 SharjahUnited Arab Emirates Department of Mechanical Engineering and Advanced Materials Science Regional Center for Extension and DevelopmentCouncil of Scientific and Industrial Research(CSIR)-Central Leather Research Institute(CLRI)Jalandhar 144021India Mechanical Engineering Department King Fahd University of Petroleum and MineralsDhahran 31261Saudi Arabia

Cutting fluid is crucial in ensuring surface quality and machining accuracy during ***,traditional mineral oil-based cutting fluids no longer meet modern machining’s health and environmental protection *** a renewable,pollution-free alternative with excellent processing characteristics,vegetable oil has become an inevitable ***,vegetable oil lacks oxidation stability,extreme pressure,and antiwear proper-ties,which are essential for machining *** physicochemical characteristics of vegetable oils and the improved methods’application mechanism are not fully *** study aims to investigate the effects of viscosity,surface tension,and molecular structure of vegetable oil on cooling and lubricating *** mechanisms of autoxidation and high-temperature oxidation based on the molecular structure of vegetable oil are also *** study further investigates the application mechanism and performance of chemical modification and antioxidant *** study shows that the propionic ester of methyl hydroxy-oleate obtained by epoxidation has an initial oxidation temperature of 175℃.The application mechanism and extreme pressure performance of conventional extreme pressure additives and nanoparticle additives were also investigated to solve the problem of insufficient oxidation resistance and extreme pressure performance of nanobiological ***,the study discusses the future prospects of vegetable oil for chemical modification and nanoparticle *** study provides theoretical guidance and technical support for the industrial application and scientific research of vegetable oil in the field of lubrication and *** is expected to promote sustainable development in the manufacturing industry.

关键词： Cutting fluid Vegetable oil Chemical modification Antioxidant Extreme pressure additive Minimum quality lubrication

GPS-based fine-scale mapping surveys for schistosomiasis assessment: a practical introduction and documentation of field implementation

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Infectious Diseases of Poverty 2022年第1期11卷 88-89页

作者： Lydia Trippler Mohammed Nassor Ali Shaali Makame Ame said Mohammed Ali Fatma Kabole Jan Hattendorf Stefanie Knopp Swiss Tropical and Public Health Institute Kreuzstrasse 24123AllschwilSwitzerland 不详

Background Fine-scale mapping of schistosomiasis to guide micro-targeting of interventions will gain importance in elimination settings,where the heterogeneity of transmission is often *** mobile applications offer new opportunities for disease *** provide a practical introduction and documentation of the strengths and shortcomings of GPS-based household identification and participant recruitment using tablet-based applications for fine-scale schistosomiasis mapping at sub-district level in a remote area in Pemba,*** A community-based household survey for urogenital schistosomiasis assessment was conducted from November 2020 until February 2021 in 20 small administrative areas in *** the survey,1400 housing structures were prospectively and randomly selected from shapefile *** identify pre-selected structures and collect survey-related data,field enumerators searched for the houses’geolocation using the mobile applications Open Data Kit(ODK)and *** number of inhabited and uninhabited structures,the median distance between the pre-selected and recorded locations,and the dropout rates due to non-participation or non-submission of urine samples of sufficient volume for schistosomiasis testing was *** Among the 1400 randomly selected housing structures,1396(99.7%)were identified by the *** median distance between the pre-selected and recorded structures was 5.4 m.A total of 1098(78.7%)were residential *** them,99(9.0%)were dropped due to continuous absence of residents and 40(3.6%)households refused to *** 797(83.1%)among the 959 participating households,all eligible household members or all but one provided a urine sample of sufficient *** The fine-scale mapping approach using a combination of ODK and an offline navigation application installed on tablet computers allows a very precise identification of housing *** due to non-residential housin

关键词： Urogenital schistosomiasis Control Elimination Intervention Fine-scale mapping Interruption of transmission Micro-mapping Precision mapping Wayfinding Zanzibar

An Approach towards Goal-Oriented Requirements Ontology: Consistency and Completeness Based Requirements Analysis

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Journal of Software Engineering and Applications 2023年第2期16卷 31-49页

作者： Mohammad Mustafa Taye said Ghoul Software Engineering Department Philadelphia University Amman Jordan Research Laboratory on Bio-Inspired Software Engineering Philadelphia University Amman Jordan

The paper presents a new approach to managing software requirement elicitation techniques with a high level of analyses based on domain ontology techniques, where we established a mapping between user scenario, structured requirement, and domain ontology techniques to improve many attributes such as requirement consistency, completeness and eliminating duplicate requirements to reduce risk of overrun time and budgets. One of the main targets of requirement engineering is to develop a requirement document with high quality. So, we proposed a user interface to collect all vital information about the project directly from the regular user and requirement engineering;After that, the proposal will generate an ontology based on semantic relations and rules. Requirements Engineering tries to keep requirements throughout a project’s life cycle consistent necessities clear, and up to date. This prototype allows mapping requirement scenarios into ontology elements for semantically interrupted. The general points of our prototype are to guarantee the identification requirements and improved nature of the Software Requirements Specification (SRS) by solving incomplete and conflicting information in the requirements specification.

关键词： Requirements Engineering Requirements Elicitation Domain Ontology Ontology

An Iterative Scheme of Arbitrary Odd Order and Its Basins of Attraction for Nonlinear Systems

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Computers, Materials & Continua 2021年第2期66卷 1427-1444页

作者： Obadah said Solaiman Ishak Hashim Department of Mathematical Sciences Universiti Kebangsaan MalaysiaBangi Selangor43600Malaysia

In this paper,we propose a fifth-order scheme for solving systems of nonlinear *** convergence analysis of the proposed technique is *** proposed method is generalized and extended to be of any odd order of the form 2n*** scheme is composed of three steps,of which the first two steps are based on the two-step Homeier’s method with cubic convergence,and the last is a Newton step with an appropriate approximation for the *** iteration of the presented method requires the evaluation of two functions,two Fréchet derivatives,and three matrix inversions.A comparison between the efficiency index and the computational efficiency index of the presented scheme with existing methods is *** basins of attraction of the proposed scheme illustrated and compared to other schemes of the same *** test problems including large systems of equations are considered to compare the performance of the proposed method according to other methods of the same *** an application,we apply the new scheme to some real-life problems,including the mixed Hammerstein integral equation and Burgers’*** and examples show that the presented method is efficient and comparable to the existing techniques of the same order.

关键词： System of nonlinear equations root finding method iterative method order of convergence Burgers’equation

On the Optimal Design of Cable Driven Parallel Robot with a Prescribed Workspace for Upper Limb Rehabilitation Tasks

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Journal of Bionic Engineering 2019年第3期16卷 503-513页

作者： Laribi Med Amine Carbone Giuseppe Zeghloul said Department of GMSC Pprime Institute CNRS-University of Poitiers - ENSMA - UPR 3346 Poitiers France Department of Mechanical Energy and Management Engineering University of Calabria 87036 Rende Italy CESTER Technical University of Cluj-Napoca Muncii Ave. 103-105 400641 Cluj-Napoca Romania

This paper deals with an optimization approach to design a cable driven parallel robot intended for upper limb rehabilitation tasks. The cable driven parallel robots have characteristics that make them best candidate for rehabilitation exercise purposes such as large workspace, re-configurable architecture, portability and cost effectiveness. Here, both the cable tensions that are needed to move a wristband as well as the workspace need to be carefully optimized for fulfilling the prescribed operation tasks. A specific case of study is addressed in this work by referring to LA RM wire driven exercising device (LAWEX), which is applied to upper limbs exercises. To that end, a motion capture system is used to collect quantitative data on the prescribed workspace of a human upper limb. A specific optimization problem is settled up for considering combining two optimization goals, namely, the smallest robot size reaching a prescribed workspace and the minimum cable tension distributions. A sequence of optimization steps is defined using Genetic Algorithms (GAs) applied to LAWEX robot. The proposed objective function is based on a mathematical formulation of the power of a point with respect to bounding surfaces in combination with a performance index to show the distributions of the minimum cable tensions.

关键词： LAWEX robot design bionic robot cable-driven robots optimization power of the point rehabilitation tasks

Non linear modeling of three-dimensional reinforced and fiber concrete structures

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Frontiers of Structural and Civil Engineering 2018年第4期12卷 439-453页

作者： Fatiha IGUETOULENE Youcef BOUAFIA Mohand said KACHI University Mouloud Mammeri of Tizi-Ouzou 15000Algeria

Under the effect of the ascending loading, the behavior of reinforced concrete structures is rather non linear. Research in industry and science aims to extend forward the use of non-linear calculation of fiber concrete for structural parts such as columns, veils and pious, as the fiber concrete is more ductile behavior then the classical concrete behavior. The formulation of the element has been established for modeling the nonlinear behavior of elastic structures in three dimensions, based on the displacement method. For the behavior of concrete and fiber concrete compressive and tensile strength (stress-strain) the uniaxial formulation is used. For steel bi-linear relationship is used. The approach is based on the discretization of the cross section trapezoidal tables. Forming the stiffness matrix of the section, the integral of the surface is calculated as the sum of the integrals on each of the cutting trapezoids. To integrate on the trapeze we have adopted the type of Simpson integration scheme.

关键词： numerical modeling column and beam nonlinear analysis fibers pious reinforcement 3D formulation response load-deflection