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Numerical investigation of tunneling induced surface movement:A case study of MRT line 1,Dhaka

Underground Space 2023年第5期12卷 116-136页

作者： Khondaker Sakil ahmed Johana Sharmin mehedi ahmed Ansary Department of Civil Engineering Military Institute of Science and TechnologyDhaka 1216 Bangladesh Department of Civil Engineering Bangladesh University of Engineering and TechnologyDhaka 1216Bangladesh

The proposed underground tunnel for Mass Rapid Transit Line 1,Dhaka brings immense attention to the engineers and experts not only because of its construction challenges through a densely-built city,but also for the potential tunneling-induced ground *** very preliminary study investigates the ground surface movement due to the progression of the tunnel boring machine(TBM)using numerical analysis.A series of finite element(FE)models have been developed using PLAXIS 3D,in which Mohr–Coulomb(MC),modified Cam-Clay(MCC),and hardening soil(HS)have been *** in-field data of Mashhad Metro Line-2 have been compared to verify PLAXIS 3D’s efficacy in tunnel ***,the outcomes of the FE analyses are compared with the existing empirical *** PLAXIS 3D analysis considering the MCC soil model exhibits strong agreement with the real monitored data,with a variance of only 3.85%.After simulating different stages of the tunnel construction,results are reported in terms of the distance of the inflexion point from the center,the settlement trough pattern,the maximum transverse settlements,and the vertical *** are also compared with the established empirical *** order to comprehend the surface settlement with various tunnel depths and diameters,a parameter dependency study has been carried *** analysis findings showed that increasing the TBM’s depth and radius causes the inflexion point’s distance from the center of the tunnel to increase by 4%and decrease by 5%,*** is also observed that as tunnel depth increases,the overall settlement of the tunnel lowers by 11%for every additional 5 meters of *** MCC model,out of the three,exhibits the most accurate value of the settlement compared to that obtained from the empirical solutions,and also the best-fit form to the Gaussian curve.

关键词： Surface settlement TBM Finite element analysis MC model MCC model

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Factors Affecting Vulnerability of Ready-Made Garment Factory Buildings in Bangladesh: An Assessment Under Vertical and Earthquake Loads

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International Journal of Disaster Risk Science 2018年第2期9卷 207-223页

作者： Tanmay Das Uttama Barua mehedi ahmed Ansary Department of Civil Engineering Pabna University of Science and Technology Department of Urban and Regional Planning Bangladesh University of Engineering and Technology (BUET) Department of Civil Engineering Bangladesh University of Engineering and Technology (BUET)

The importance of workplace safety in the ready-made garment(RMG) industry in Bangladesh came to the forefront after a series of disastrous events in recent years. In order to reduce the loss of lives and to ensure sustainable development, an in-depth understanding of the determining factors governing structural vulnerability in the RMG industry is needed. This research explores the key factors influencing the vulnerability of factory buildings under both vertical and earthquake loads. For this purpose,an ordered probit model was applied to 3746 RMG factory buildings to determine the key factors that influenced their vertical load vulnerability. A smaller subset of the original sample, 478 buildings, was examined by the same modeling method in greater detail to assess the key factors that influenced their earthquake load vulnerability. This research reveals that column capacity, structural system,and construction materials are the most influential factors for both types of vulnerabilities. Among other factors, soil liquefaction and irregular internal frame affect earthquake load vulnerability significantly. These findings are expected to enable factory owners and designers to better weigh the appropriate vulnerability factors in order to make informed decision that increase workplace safety. Theresearch findings will also help the designated authorities to conduct successful inspections of factory buildings and take actions that reduce vulnerability to both vertical and earthquake loads.

关键词： Bangladesh Building vulnerability factors Earthquake load vulnerability Ordered probit model Ready-made garment industry Vertical load vulnerability

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Political Thought in the Analects of Confucius

Political Thought in the Analects of Confucius

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作者： ahmed mehedi 陕西师范大学

学位级别：硕士

本文基于对孔子《论语》的阅读,探讨了孔子的政治哲学思想的整体性结构,以及在此基础上政府应具备的职责。全文分为五章,第一章为引言,主要论述了本文的写作背景、国内外研究概况、研究目的及方法等相关问题。第二章的主要内容是孔子政... 详细信息

本文基于对孔子《论语》的阅读,探讨了孔子的政治哲学思想的整体性结构,以及在此基础上政府应具备的职责。全文分为五章,第一章为引言,主要论述了本文的写作背景、国内外研究概况、研究目的及方法等相关问题。第二章的主要内容是孔子政治哲学的历史背景。如果我们分析孔子的《论语》,我们会发现中国的历史以及宇宙观对中国哲学的影响广泛存在,宇宙学理论与创造历史的国家事务相融合的地方随处可见,而这段历史构成了儒家哲学的一个要素,如天人观或圣王观。“天”是中国古代的天语之一,是中国哲学、宗教和神话中的一个重要概念。这就是为什么当一个国王拥有“天子”的头衔,成为哲学、宗教、道德和政治的一部分时,天与人类政治制度之间就形成了一种关系。儒家政治哲学的另一个重要历史因素是圣王的概念。根据儒家思想,圣人特别是指尧舜、禹、文、武等以德治国、以天道治国的贤德君王。这在中国古代史上是一个先例,也是中国哲学的重要组成部分。从哲学的角度看,尧对官吏制度的最大贡献是引入了一种新的观念,即由功德、智慧、价值观、责任感而不是父权制来授予王位。尧之后,舜也能维持天道统治。他是一个孝子的典范,他从不滥用对父母的孝道。按照尧的指示,舜还按照圣人对圣人而不是父传子政策的理论,将王位交给了圣王禹。长期以来,禹被中国古人视为理想的统治者和哲人之王。作为儒家政治思想重要组成部分之一的“天命”理论的背景也就成为一个重要的研究课题。“天命”是周初为推翻商朝、确立周王统治合法性而制定的。“天命”字面上指的是由上级统治者而不是下级统治者统治的权利,从隐喻和宗教的角度来看,它是指君王作为天在世上的代理,代表统治人类的权利。从历史上看,这一思想最早是在公元前1046年,最后一个暴君商纣王和周武王在牧野之战时确立的。周朝最终像以前的夏商王朝一样衰弱了,结果在中国各地开始了所谓的“战国时期”在中国政局如此混乱的时代,伟大的哲学家孔子于公元前551年生于鲁国。孔子时代,从官吏到统治者,整个鲁国乃至整个中国形成了一种混乱和无政府状态。在这种情况下,中国人民感到需要更大的和平与稳定。在当时,孔子试图传播他的道德哲学思想。这就是为什么他从一个国到另一个国并试图与诸侯交谈。在梳理相应的历史影响因素后,第三章展开论述孔子的政治思想,主要讨论了“以德治国”、“周礼”、“忠”和“正名”等《论语》中的重要概念。孔子的政治哲学主要集中在“以德治国”的学说上,这种学说提倡任人唯贤。精英制度是一种政治制度,在这种制度中,政治权力是根据人民的努力、才能和成就而不是根据社会阶级或财富来授予人民的。这种制度的进步是以一个人的表现为基础的;它是通过人才或成就的证明来衡量的。在《论语》中,“德的力量”是一种神奇的吸引力,它使统治者为人民所接受,并允许道德统治者通过无为或“不费吹灰之力”来统治国家。“无为”的字面意思是“不做”,即“无所作为”,它既是孔子独特的精神意识形态,又是孔子的政治意识形态。孔子的另一个重要学说是“周礼”,它被提倡为一种政府法。根据儒家的语境,“礼”意味着仪式;礼是周王时代中国社会确立的传统宗教道德实践过程。周礼的内容相当广泛,它不仅包括祭祀,而且是我们日常社会生活中使用的一种社会“礼节”,如穿衣礼节、进餐礼节、迎宾礼节等。文武王时期,社会上的立礼实践对社会秩序的建立起到了重要作用。当一个贤明的统治者既要遵循礼节,又要毫不费力地统治自己的国家时,人们自然会追随他,对统治者表现出忠诚。“忠”可以用两种方式来解释——当它与一个人直接相关时,我们可以称之为“忠”;当它与政治相关时,我们可以称之为“忠”。尽责是一个人履行职责的品质,它通常与政治职责(特别是当一个人从属于上级或对另一个人的责任感)和行为义务联系在一起。然而,这种理解只抓住了忠的一个方面。当然,人们应该尊重他们的上级,统治者或部长应该妥善管理人民,以获得他们的尊重。儒家哲学还认为,正名是建立主客体关系的一种观念。名字和现实之间总是应该有一个一致性。社会关系中的每个名字都意味着一定的责任和义务。统治者、大臣、父亲、儿子都是这种社会关系的名字,拥有这个名字的个人必须履行相应的责任和义务。这是孔子正名的表现。孔子构建社会结构的主要目的是通过“正名”来构建正确的社会结构。建立正确的社会结构有一些一般性的指导方针。每个人都从自己的立场出发,遵循正确的指导方针,当一个孩子对父母履行了正确的责任,当一个兄弟对兄弟履行了正确的责任,一个理想的社会结构就会建立起来。为了形成适当的社会结构,父子之间、夫妻之间、兄弟姐妹之间、上下级之间的道德责任关系被称为孝道,孔子对此十分重视。在儒家思想中,没有什么比五常的关系更重要的了。第一是父母和孩子,第二是夫妻,第三是哥哥和弟弟,第四是朋友和朋友,第五是统治者和臣民。现在,每个人在社会中都有自己的份量,总是处于这种人际关系的交叉之中。在厘清《论

关键词：孔子《论语》天命忠正名德治周礼政治学说

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Supersymmetric hybrid inflation in light of CMB experiments and swampland conjectures

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Chinese Physics C 2025年第1期49卷 114-126页

作者： Waqas ahmed Shabbar Raza Center for Fundamental Physics and School of Mathematics and Physics Hubei Polytechnic UniversityHuangshi 435003China Department of Physics Federal Urdu University of ArtsScience and TechnologyKarachi 75300Pakistan

In this study,we revisit supersymmetric(SUSY)hybrid inflation within the context of considering the latest Cosmic Microwave Background(CMB)observations and swampland *** demonstrate that SUSY hybrid inflation remains consistent with Planck 2018 data when radiative,soft mass,and supergravity(SUGRA)corrections are applied to the scalar *** is commonly perceived that SUSY hybrid inflation with a minimal Kahler potential results in a gauge symmetry breaking scale M of O(10^(15))GeV,leading to issues with the proton decay *** our analysis,we introduce a novel parameter space that alleviates the proton decay issue by achieving M~10^(16) GeV with M_(S)^(2)*** scenario necessitates a soft SUSY breaking scale|M_(S)|■10^(6) ***,we find that the tensor-to-scalar ratio r spans from 10^(-16) to 10^(-6),indicating a very small *** small ratio allows the modified swampland criteria to hold,although satisfying the trans-Planckian censorship conjecture(TCC)remains *** address this,we also explo non-minimal Kahler *** fixing the spectral index at n_(S)=0.9665,consistent with the central value of Planck 2018 data,and setting M=2×10^(16)GeV,we present our *** show that the canonical measure of primordial gravitational waves,r,for M_(S)=1 TeV,m_(3/2)=1 TeV,and k_(S)<0 for N=1 and N=2,ranges from 10^(-5) to 0.01,rendering it detectable by Planck and upcoming experiments such as LiteBIRD,Simons Observatory,PRISM,PIXIE,CORE,CMB-S4,and ***,we outline the parametric space and provide benchmark points for the non-minimal case to ensure compatibility with both the modified swampland conjecture and TCC.

关键词： suppersymmetry hybrid inflation swampland conjectures

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Generalized uncertainty principle from the regularized self-energy

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Communications in Theoretical Physics 2025年第1期77卷 92-100页

作者： Kimet Jusufi ahmed Farag Ali Physics Department State University of TetovoIlinden Street nn1200TetovoNorth Macedonia Essex County College 303 University AveNewarkNJ 07102United States America Department of Physics Faculty of ScienceBenha UniversityBenha13518Egypt

We use the Schrödinger–Newton equation to calculate the regularized self-energy of a particle using a regular self-gravitational and electrostatic potential derived in string *** particle mass M is no longer concentrated into a point but is diluted and described by a quantum-corrected smeared energy density resulting in corrections to the energy of the particle,which is interpreted as a regularized *** extend our results and find corrections to the relativistic particles using the Klein–Gordon,Proca and Dirac *** important finding is that we extract a form of the generalized uncertainty principle(GUP)from the corrected *** form of the GUP is shown to depend on the nature of particles;namely,for bosons(spin 0 and spin 1)we obtain a quadratic form of the GUP,while for fermions(spin 1/2)we obtain a linear *** correlation we find between spin and GUP may offer insights for investigating quantum gravity.

关键词： generalized uncertainty principle T-duality regularized self-energy

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Nanosecond pulse and dual-wavelength Q-switched 1.5 μm fiber laser using MAX phase Cr_(2)TiAlC_(2) saturable absorber

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Optoelectronics Letters 2025年第1期21卷 7-12页

作者： ahmed Shakir AL-HITI Hiba HASSAN Department of Electrical Engineering Faculty of EngineeringUniversity of AnbarAnbar 31001Iraq Department of Laser and Optoelectronics Engineering University of Technology-IraqBaghdadIraq

We demonstrated a new type of MAX phase material,chromium titanium aluminum carbide(Cr_(2)TiAlC_(2)) polymer film,to generate a passively Q-switched erbium-doped fiber laser(EDFL).The film thickness was measured to be around 45 μm,which was fabricated using the embedding method with polyvinyl alcohol(PVA) polymer as *** saturable absorber(SA) film demonstrates a dual-wavelength passively Q-switched EDFL which operates at 1 531 nm and 1 560.19 nm,*** Q-switching pulse duration could be varied from 2.46 μs to 770 ns,while the repetition rate varied from 92.76 kHz to 106.6 kHz with an increasing input pumping range from 154 mW to 300 *** maximum output power and pulse energy of 15.05 mW and 141.18 nJ were obtained at the maximum input power of 300 mW,respectively.

关键词： switched pulse fiber

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Iron-promoted zirconia-alumina supported Ni catalyst for highly efficient and cost-effective hydrogen production via dry reforming of methane

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Journal of Environmental Sciences 2025年第2期148卷 274-282页

作者： ahmed S.Al-Fatesh Naitik Patel Vijay Kumar Srivastava ahmed I.Osman David W.Rooney Anis H.Fakeeha ahmed E.Abasaeed Mohammed F.Alotibi Rawesh Kumar Chemical Engineering Department College of EngineeringKing Saud UniversityP.O.Box 800Riyadh 11421Saudi Arabia Department of Chemistry Indus UniversityAhmedabadGujarat 382115India School of Chemistry and Chemical Engineering Queen’s University BelfastBelfast BT95AGNorthern IrelandUK Institute of Refining and Petrochemicals Technologies King Abdulaziz City for Science and Technology(KACST)P.O.Box 6086Riyadh 11442Kingdom of Saudi Arabia

Developing cost-effective and high-performance catalyst systems for dry reforming of methane(DRM)is crucial for producing hydrogen(H_(2))***,we investigate using iron(Fe)as a promoter and major alumina support in Ni-based catalysts to improve their DRM *** addition of iron as a promotor was found to add reducible iron species along with reducible NiO species,enhance the basicity and induce the deposition of oxidizable *** incorporating 1 wt.%Fe into a 5Ni/10ZrAl catalyst,a higher CO_(2) interaction and formation of reducible"NiO-species having strong interaction with support"was observed,which led to an∼80%H_(2) yield in 420 min of Time on Stream(TOS).Further increasing the Fe content to 2 wt.%led to the formation of additional reducible iron oxide species and a noticeable rise in H_(2) yield up to 84%.Despite the severe weight loss on Fe-promoted catalysts,high H_(2) yield was maintained due to the proper balance between the rate of CH_(4) decomposition and the rate of carbon deposit ***,incorporating 3 wt.%Fe into the 5Ni/10ZrAl catalyst resulted in the highest CO_(2) interaction,wide presence of reducible NiO-species,minimumgraphitic deposit and an 87%H_(2) *** findings suggest that ironpromoted zirconia-alumina-supported Ni catalysts can be a cheap and excellent catalytic system for H_(2) production via DRM.

关键词： Dry reforming of methane Coke resistant Hydrogen production Cheap catalyst Fe-promoted catalyst

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Leveraging Artificial Intelligence to Achieve Sustainable Public Healthcare Services in Saudi Arabia: A Systematic Literature Review of Critical Success Factors

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Computer Modeling in Engineering & Sciences 2025年第2期142卷 1289-1349页

作者： Rakesh Kumar Ajay Singh ahmed Subahi ahmed Kassar Mohammed Ismail Humaida Sudhanshu Joshi Manu Sharma Department of Health Management College of Public Health and Health InformaticsUniversity of Ha’ilHa’il81451Saudi Arabia Department of Management&Information Systems College of Business AdministrationUniversity of Ha’ilHa’il81451Saudi Arabia Department of Public Health College of Public Health and Health InformaticsUniversity of Ha’ilHa’il81451Saudi Arabia School of Management Doon UniversityDehradunUttarakhand248001India Department of Management Studies Graphic Era UniversityDehradunUttarakhand248002India

This review aims to analyze the development and impact of Artificial Intelligence(AI)in the context of Saudi Arabia’s public healthcare system to fulfill Vision 2030 *** is extensively devoted to AI technology deployment relevant to disease management,healthcare delivery,epidemiology,and ***,its AI is culturally sensitive and ethically grounded in *** on the PRISMA framework,an SLR evaluated primary academic literature,cases,and practices of Saudi Arabia’s AI implementation in the public healthcare ***,it categorizes prior research based on how AI can work,the issues it poses,and its implications for the Kingdom’s healthcare *** Saudi Arabian context analyses show that AI has increased the discreet prediction of diseases,resource management,and monitoring outbreaks during mass congregations such as ***,the study outlines critical areas for defining the potential for artificial intelligence and areas for enhancing digital development to support global healthcare *** key themes emerging from the review include Saudi Arabia:(i)the effectiveness of AI with human interaction for sustainable health services;(ii)conditions and quality control to enhance the quality of health care services using AI;(iii)environmental factors as influencing factors for public health care;(iv)Artificial Intelligence,and advanced decision-making technology for Middle Eastern health care *** policymakers,healthcare managers,and researchers who will engage with AI innovation,the review proclaims that AI applications should respect the country’s socio-cultural and ethical practices and pave the way for sustainable healthcare *** empirical research is needed on the implementation issues with AI,creating culturally appropriate models of AI,and finding new applications of AI to address the increasing demand for healthcare services in Saudi Arabia.

关键词： Artificial intelligence public health services sustainability healthcare Saudi Arabia PRISMA

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Evidence for active generation and seepage of sub-salt natural gas/condensate blend in the east offshore Nile Delta, Egypt: Integrated geochemical, petrophysical and seismic attribute approaches

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Petroleum Science 2025年第1期22卷 130-150页

作者： Mahmoud Leila ahmed A.Radwan Amir Ismail Emad A.Eysa Geology Department Faculty of Science Mansoura University School of Mining and Geosciences Nazarbayev University Department of Geology Faculty of Science Al-Azhar UniversityAssiut Branch Department of Geology Faculty of Science Helwan University Department of Physical and Environmental Sciences Texas A&M University—Corpus Christi Geology Department Faculty of Science Zagazig University

Offshore Nile Delta in Egypt represents an enormous hydrocarbon province with recent projected gas and condensate discoveries of more than 50 trillion cubic feet “TCF”. Most of these occur in the post-salt hydrocarbon plays where biogenic gases are dominant. This study integrates organic geochemistry,seismic geomorphology and petrophysics in order to decipher the origin, and accumulation conditions of the wet gas/condensate blend in the Upper Miocene sub-salt Wakar Formation sandstones in Port Fouad Marine “PFM” Field, offshore Nile Delta. Hydrocarbon pay zones are scattered thin（ 1 w.t.%, hydrogen index“HI” > 200 mg HC/g TOC） and mature(Tmax> 430°C, vitrinite reflectance “VR” > 0.6 %R_o), source rocks are restricted to Upper Miocene Wakar and Oligo-Miocene Tineh formations. The latter contains more mature organofacies（up to 1.2 %R_o） and type II/III kerogen, thereby demonstrating a good capability to generate wet gases. The studied gas is wet and has thermogenic origin with signs of secondary microbial alteration, whereas the condensate contains a mixture of marine and terrestrial input. Molecular biomarkers of the condensate, isotopic and molecular composition of the gas reveals a generation of condensate prior to gas expulsion from the source. The Wakar sandstones have a heterogeneous pore system where three reservoir rock types（RRTI, RRTII and RRTIII）. RRTI rocks present the bulk composition of the Wakar pay zones. Spatial distribution of RRTI facies likely control the accumulation of the sub-salt hydrocarbons. Our results provide a new evidence on an active petroleum system in the sub-salt Paleogene successions in the offshore Nile Delta where concomitant generation of ga

关键词： Petrophysical evaluation Source rock Hydrocarbon geochemistry Biomarkers Gas chimneys Rock-typing

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Therapeutic use of music listening in patients undergoing invasive coronary procedures: A meta-analysis

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WORLD JOURNAL OF CARDIOLOGY 2025年第1期17卷 97406页

作者： Siddiqi, ahmed Kamal Shafiq, Aimen ahmed, Mushood Anwer, Anusha Maniya, Muhammad Talha ahmed, Aymen Chachar, Muhammad Azhar Al Hasibuzzaman, Md Emory Univ Dept Radiol & Imaging Sci Div Cardiothorac Imaging Atlanta GA 30322 USA Dow Univ Hlth Sci Dept Med Karachi 74200 Pakistan Rawalpindi Med Univ Dept Internal Med Rawalpindi 74200 Pakistan Dow Univ Hlth Sci Dow Med Coll Dept Internal Med Karachi 74200 Pakistan Ziauddin Med Univ Dept Med Karachi 74200 Pakistan Niramoy Hosp Dept Med Panchagarh 5010 Bangladesh Ningbo Univ Affiliated Hosp 1 Dept Med Med Sch Ningbo 315211 Zhejiang Peoples R China

BACKGROUND Listening to music has been shown to reduce pain and anxiety before, during, and after invasive coronary procedures. AIM To perform a systematic review and meta-analysis to explore the effect of therapeutic use of music on both, perioperative and postoperative outcomes of invasive coronary procedures. METHODS An exhaustive literature search of 3 electronic databases (MEDLINE, Scopus, Cochrane CENTRAL) was conducted from inception until 10th December 2023. The results of our analyses are presented as standard mean difference (SMD) or weighted mean difference, with 95%CI and pooled using a random effects model. A P value < 0.05 was considered significant in all cases. RESULTS From 21 studies, 2141 participants were included in our analysis. The pooled analysis demonstrated that music listening significantly improves post-procedural pain (SMD = -0.78, 95%CI: -1.34 to -0.23;P = 0.006), anxiety (SMD = -0.86, 95%CI: -1.43 to -0.29;P = 0.003), heart rate [mean difference (MD) = -3.38, 95%CI: -5.51 to -1.25;P = 0.002], and systolic blood pressure (MD = -5.89, 95%CI: -9.75 to -2.02;P = 0.003). There was no significant improvement in diastolic blood pressure (MD = -3.22, 95%CI: -6.58 to 0.14;P = 0.06) or respiratory rate (MD = -0.97, 95%CI: -1.98 to 0.03;P = 0.06). CONCLUSION Music listening can be used in healthcare settings for patients undergoing invasive coronary procedures to reduce anxiety levels and improve their physiological parameters.

关键词： Music Music therapy Percutaneous coronary intervention Coronary artery bypass grafting Angiography Anxiety Pain management

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