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Increasing the maximum Capacity Path in a Network and Its Application for Improving the Connection Between Two Routers

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Tsinghua Science and Technology 2024年第3期29卷 753-765页

作者： adrian m.Deaconu javad Tayyebi Department of mathematics and Computer Science Transilvania University of BrasovBrasov 500036Romania Department of Industrial Engineering Birjand University of TechnologyBirjand 000097Iran

Abstract:This paper addresses the problem of improving the optimal value of the maximum Capacity Path(mCP)through expansion in a flexible network,and minimizing the involved *** only condition applied to the cost functions is to be non-decreasing *** is a non-restrictive condition,reflecting the reality in practice,and is considered for the first time in the ***,the total cost of expansion is a combination of max-type cost(e.g.,for supervision)and sum-type cost(*** building infrastructures,price of materials,price of labor,etc.).For this purpose,two types of strategies are combined:(l)increasing the capacity of the existing arcs,and(l)adding potential new *** different problems are introduced and *** the problems have immediate applications in Internet routing *** first one is to extend the network,so that the capacity of an mcP in the modified network becomes equal to a prescribed value,therefore the cost of modifications is minimized.A strongly polynomial-time algorithm is deduced to solve this *** second problem is a network expansion under a budget constraint,so that the capacity of an mcP is maximized.A weakly polynomial-time algorithm is presented to deal with *** the special case when all the costs are linear,a meggido's parametric search technique is used to develop an algorithm for solving the problem in strongly polynomial *** new approach has a time complexity of O(n^(4)),which is better than the time complexity of O(n4 log(n)of the previously known method from literature.

关键词： maximum Capacity Path(mCP) network expansion Internet routing polynomial-time algorithms

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Temperature-jump tensile tests to induce optimized TRIP/TWIP effect in a metastable austenitic stainless steel

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International Journal of minerals,metallurgy and materials 2024年第9期31卷 2025-2036页

作者： m.ham.ad javad Sohrabi hamed mirzadeh Saeed Sadeghpour Abdol Reza Geranmayeh Reza mahmudi School of metallurgy and materials Engineering College of EngineeringUniversity of Tehran14395-515TehranIran Centre for advanced Steels Research Materials and Mechanical EngineeringUniversity of Oulu90014 OuluFinland

In the present work,plastic deformation mechanisms were initially tailored by adjusting the deformation temperature in the range of 0 to 200℃ in AISI 304L austenitic stainless steel,aiming to optimize the strength-ductility *** was shown that the combined twinning-induced plasticity(TWIP)/transformation-induced plasticity(TRIP)effects and a wider strain range for the TRIP effect up to higher strains by adjusting the deformation temperature are good strategies to improve the strength-ductility synergy of this metastable stainless *** this regard,by consideration of the observed temperature-dependency of plastic deformation,the controlled sequence of TWIP and TRIP effects for archiving superior strength-ductility trade-off was intended by the pre-designed temperature jump tensile ***,the optimum tensile toughness of 846 mJ/m^(3) and total elongation to 133% were obtained by this strategy via exploiting the advantages of the TWIP effect at 100℃ and the TRIP effect at 25℃ at the later stages of the ***,a deformation-temperature-transformation(DTT)diagram was developed for this metastable ***,based on work-hardening analysis,it was found that the main phenomenon constraining further improvement in the ductility and strengthening was the yielding of the deformation-induced α′-martensite.

关键词： metastable stainless steels transformation-induced plasticity twinning-induced plasticity stacking fault energy mechanical properties

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未热解厚热障涂层的隔热能力和黏接强度

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Transactions of Nonferrous metals Society of China 2024年第4期34卷 1226-1236页

作者： m.ham.ad IZadINIA Reza SOLTANI mahmoud HEYDARZadEH SOHI javad mOSTAGHImI School of metallurgy and materials Engineering College of EngineeringUniversity of TehranTehranIran Centre for advanced Coating Technologies Department of Mechanical and Industrial EngineeringUniversity of TorontoTorontoOntarioCanada

对比研究使用未热解粉末制备的厚热障涂层(UPTTBC)和传统TBC、厚TBC(TTBC)及密集垂直裂纹(DVC)TTBC 4种涂层的隔热能力和黏接强度。采用降温法测试涂层的隔热能力;根据ASTm C633标准,采用拉拔试验检测涂层的黏接强度。结果显示,UPTTBC和... 详细信息

对比研究使用未热解粉末制备的厚热障涂层(UPTTBC)和传统TBC、厚TBC(TTBC)及密集垂直裂纹(DVC)TTBC 4种涂层的隔热能力和黏接强度。采用降温法测试涂层的隔热能力;根据ASTm C633标准,采用拉拔试验检测涂层的黏接强度。结果显示,UPTTBC和DVC TTBC的黏接强度分别比TTBC高35%和25%。这可能是由于UPTTBC结构中存在亚微米尺度的未熔化区域,起到了阻止裂纹扩展的作用。此外,隔热测试的结果表明,DVCTTBC涂层的隔热能力最差,为0.28℃/μm,而UPTTBC涂层的隔热能力最强,为0.40℃/μm。由于UPTTBCs显微组织中存在亚微米区域,使涂层展现出优越的隔热能力。相反,DVCTTBC因其致密的结构,具有最低的隔热能力。

关键词：厚热障涂层密集垂直裂纹热障涂层未热解粉末黏接强度隔热能力

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Assessment of Agricultural Soil Quality Indices Using mechanistic models

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Open Journal of Soil Science 2024年第6期14卷 333-352页

作者： m.ham.adali Nikpey javad Robatjazi Shahabeddin Garmehei Hendra Gonsalve W. Lasar Nguyen Khoi Nghia Benjamin Kwadwo Agyei Department of Soil Science Faculty of Agriculture Tarbiat Modarres University Tehran Iran Texas A&m AgriLife Research Department of Soil and Crop Sciences Texas A&M University College Station TX USA Faculty of Soil Sciences College of Agriculture Can Tho University Can Tho Vietnam Department of Plant Soil and Microbial Sciences Michigan State University East Lansing MI USA

Assessing soil quality is a critical strategy for diagnosing soil status and anticipating concerns in land use systems for agricultural sustainability. In this study, two soil quality assessment indices, the Integrated Quality Index (IQI) and Nemoro Quality Index (NQI), were employed using two indicator selection methods: Total Data Set (TDS) and minimum Data Set (mDS), focusing on agricultural fields in Golestan province, Iran. A total of 89 soil samples were collected and analyzed for particle size distribution, organic carbon, calcium carbonate equivalent (CCE), electrical conductivity (EC), pH, and plant-essential nutrients, including nitrogen, phosphorus, potassium, zinc, copper, manganese, and iron. Principal component analysis (PCA) was used to extract mDS from TDS, and geostatistical adaptation and correlation analyses were performed to determine the optimal soil quality evaluation index. Our results show that the exponential model better suits the spatial structure of soil quality indicators (IQImDS: 0.955). Conformity and correlation analyses indicate that the IQI index outperformed the NQI index in estimating soil quality. The superiority of the TDS technique over the mDS technique in terms of accuracy (IQITDSs kappa: 0.155). Linear relationships between different methods showed a higher correlation coefficient (R2 = 0.43) through the application of IQI. This study suggests the use of IQImDS to provide a reliable measurement that is particularly useful in assessing the quality of agricultural soil.

关键词： Soil Quality Geographic Information System Integrated Quality Index Nemoro Quality Index

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On the monomorphism category of n-cluster tilting subcategories

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Science China mathematics 2022年第7期65卷 1343-1362页

作者： javad Asadollahi Rasool Hafezi Somayeh Sadeghi Department of Pure mathematics Faculty of Mathematics and StatisticsUniversity of IsfahanIsfahan 81746-73441Iran School of mathematics and Statistics Nanjing University of Information Science&TechnologyNanjing 210044China

Let m be an n-cluster tilting subcategory of mod-Λ,whereΛis an Artin *** S(m)denote the full subcategory of S(Λ),the submodule category of Λ,consisting of all the monomorphisms in *** construct two functors from S(m)to mod-Λ,the category of finitely presented additive contravariant functors on the stable category of *** show that these functors are full,dense and objective and hence provide equivalences between the quotient categories of S(m)and mod-Λ.We also compare these two functors and show that they differ by the n-th syzygy functor,provided m is an n Z-cluster tilting *** functors can be considered as higher versions of the two functors studied by Ringel and Zhang(2014)in the case Λ=k[x]/and generalized later by Eiríksson(2017)to self-injective Artin *** applications are provided.

关键词： submodule categories n-abelian categories n-cluster tilting subcategories

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Syringic acid improves oxidative stress and mitochondrial biogenesis in the liver of streptozotocin-induced diabetic rats

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Asian Pacific Journal of Tropical Biomedicine 2020年第3期10卷 111-119页

作者： Zahra Sabahi m.ham.ad javad khoshnoud Bahman Khalvati Seyedeh-Sara Hashemi Zahra GhasempourFarsani Hoda mogholi Gerashi marzieh Rashedinia medicinal Plants Processing Research Center Shiraz University of Medical SciencesShirazFarsIran Department of Pharmacology and Toxicology School of PharmacyShiraz University of Medical SciencesShirazIran medicinal Plants Research Center Yasuj University of Medical SciencesYasujIran Burn and Wound Healing Research Center Shiraz University of Medical SciencesShirazIran

Objective:To determine the effects of syringic acid on hepatic damage in diabetic ***:Diabetes was induced by *** rats were given syringic acid at doses of 25,50 and 100 mg/kg by oral gavage for 6 *** acid effects on the liver were evaluated by examination of plasma biochemical parameters,and pathological *** addition,biomarkers of lipid peroxidation and antioxidant status of liver tissues were *** time-PCR was performed to investigate the m RNA expression levels of mitochondrial biogenesis indices in different ***:Syringic acid significantly attenuated the increase in most of plasma biochemical parameters in diabetic ***,syringic acid treatment increased the catalase activity while it reduced the superoxide dismutase activity and hepatic malondialdehyde level in diabetic *** was no difference between the glutathione content of the treated and untreated *** findings were supported by alleviation of histopathological damages in the syringic acid-treated groups compared to the untreated diabetic *** acid also significantly upregulated the hepatic m RNA expression of PGC-1α,NRF-1,and NRF-2 and increased the mtD NA/nD NA ratio in diabetic ***:Syringic acid can be considered as a suitable candidate against hepatic complications since it can reduce oxidative damages in diabetic ***,it has the potential of targeting hepatic mitochondria in diabetes.

关键词： Syringic acid Diabetic Liver Oxidative stress mitochondrial biogenesis Rats

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Evaluating the different boundary conditions to simulate airflow and heat transfer in Double-Skin Facade

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Building Simulation 2022年第5期15卷 799-815页

作者： javad Ahmadi m.ham.adjavad mahdavinejad Olena Kalyanova Larsen Chen Zhang Afsaneh Zarkesh Somayeh Asadi Highperformance Architecture Laboratory Department of ArchitectureTarbiat Modares UniversityJalal-e Al Ahmad HighwayNasr bridgeTehranIran Department of Built Environment Faculty of Engineering and ScienceDivision of Architectural EngineeringAalborg UniversityAalborgDenmark Department of Architectural Engineering Pennsylvania State UniversityPA 16801USA

The CFD simulation accuracy mostly depends on the appropriate setting of boundary conditions and numerical simulation *** study shows the influence of two types of boundary condition settings on the CFD simulation results of Double-Skin Facade(DSF)for a specific *** two boundary settings are the constant temperature on the DSF surfaces called Boundary A,and Boundary B is defined via solar radiation using the Discrete Ordinate radiation model(DOm).The paper verified both the numerical simulations using the experimental *** the numerical results of two types of boundaries with experimental data shows that both cases underestimated the values lower than 5.2 K and 0.1 m/s for the temperature and velocity respectively at the regarded measured *** A gives more accurate temperature prediction results,while Boundary B shows velocity magnitude closer to the measurements in the middle height of the cavity;the average temperature and velocity differences between the two boundary types are 0.6 K and 0.003 m/s respectively which are ***,the selection of boundary conditions depends on study purposes,however,when the DSF is equipped with blinds and if there is not enough data in hand but the exact value of solar irradiation,using the Boundary B approach is suggested;it can provide reasonable results associated with multi-type of thermal boundary conditions at the same ***,if the goal is to investigate the flow pattern in the DSF,Boundary B is argued to perform better than the constant temperature boundary condition.

关键词： Double-Skin Facade boundary conditions thermal performance airflow irradiation

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The Eigenvalues of a Class of Elliptic Differential Operators

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Journal of Partial Differential Equations 2023年第1期36卷 58-67页

作者： HABIBI VOSTA KOLAEI m.ham.ad javad AZAmI Shahroud Department of pure mathematics Faculty of ScienceImam Khomeini International UniversityQazvinIran

Consider(m,g)as an n-dimensional compact Riemannian *** this paper we are going to study a class of elliptic differential operators which appears naturally in the study of hypersurfaces with constant mean curvature an... 详细信息

关键词： Eigenvalue problem elliptic operators Bochner type formula

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Bionic Flexible Texture Design Based on Bio-Fouling Suppression Effect for Protection of marine Structures

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China Ocean Engineering 2023年第5期37卷 842-848页

作者： YI Peng WU Yu-peng CAI Bao-ping TIAN Xing-hui javad mOSTAGHImI YANG Xiao-shuang LYU ming-li College of mechanical and Electrical Engineering China University of PetroleumQingdao 266580China Department of mechanical and Industrial Engineering University of TorontoToronto ONM5S3G8Canada Qingdao Yongzhao New material Science&Technology Co.Ltd. Qingdao 266061China

marine equipments such as marine risers and oil pipelines operate in complex underwater environments and are usually attached by animals,plants and *** attachment of marine fouling organisms will accelerate the corrosion damage of offshore structure and greatly reduce the service *** have shown that non-smooth bionic surfaces with specific microstructures can inhibit fouling *** on the idea of bionics,this paper proposes a new type of underwater flexible fretting texture,which is a composite material prepared by mixing graphene and silicone rubber,and modified by pulsed laser to construct a hexagonal bionic surface *** the impact of specific water flow,the flexible texture can produce an angular displacement around 8°and a linear displacement in the amplitude range of 165μm,and the inhibition rate of fouling biological diatoms up to 97.5%,which can effectively avoid the occurrence of marine biological *** results provide a new idea for the surface protection of marine structures,which is of great significance for the development of marine industry.

关键词： flexible microstructure marine antifouling algae attachment laser-induced texture

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Iterative Algorithm with mixed Errors for Solving a New System of Generalized Nonlinear Variational-Like Inclusions and Fixed Point Problems in Banach Spaces

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Chinese Annals of mathematics,Series B 2013年第4期34卷 593-622页

作者： javad BALOOEE Department of mathematics Sari Branch Islamic Azad University

A new system of generalized nonlinear variational-like inclusions involving Amaximal m-relaxed η-accretive(so-called,(A, η)-accretive in [36]) mappings in q-uniformly smooth Banach spaces is introduced, and then, by using the resolvent operator technique associated with A-maximal m-relaxed η-accretive mappings due to Lan et al., the existence and uniqueness of a solution to the aforementioned system is established. Applying two nearly uniformly Lipschitzian mappings S1 and S2 and using the resolvent operator technique associated with A-maximal m-relaxed η-accretive mappings, we shall construct a new perturbed N-step iterative algorithm with mixed errors for finding an element of the set of the fixed points of the nearly uniformly Lipschitzian mapping Q =(S1, S2) which is the unique solution of the aforesaid system. We also prove the convergence and stability of the iterative sequence generated by the suggested perturbed iterative algorithm under some suitable conditions. The results presented in this paper extend and improve some known results in the literature.

关键词：一致光滑Banach空间扰动迭代算法广义非线性混合误差变分包含不动点问题 Lipschitz映射系统

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