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Calculation of Available Transfer Capability Using Hybrid Chaotic Selfish Herd Optimizer and 24 Hours RES-thermal Scheduling

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Chinese Journal of Electrical Engineering 2023年第4期9卷 54-72页

作者： Kingsuk Majumdar Provas Kumar roy Subrata Banerjee Department of Electrical Engineering Dr.B C Roy Engineering CollegeDurgapur 713206India Department of Electrical Engineering Kalyani Government Engineering CollegeKalyani 741235India Department of Electrical Engineering NIT DurgapurDurgapur 713209India

As fossil fuel stocks are being depleted,alternative sources of energy must be ***,traditional thermal power plants must coexist with renewable resources,such as wind,solar,and hydro units,and all-day planning and operation techniques are necessary to safeguard nature while meeting the current *** fundamental components of contemporary power systems are the simultaneous decrease in generation costs and increase in the available transfer capacity(ATC)of current *** units are linked to sources of renewable energy such as hydro,wind,and solar power,and are set up to run for 24 *** contrast,new research reports that various chaotic maps are merged with various existing optimization methodologies to obtain better results than those without the inclusion of *** seems to increase the performance and convergence properties of existing optimization *** this study,selfish animal tendencies,mathematically represented as selfish herd optimizers,were hybridized with chaotic phenomena and used to improve ATC and/or reduce generation costs,creating a multi-objective optimization *** evaluate the performance of the proposed hybridized optimization technique,an optimal power flow-based ATC was enforced under various hydro-thermal-solar-wind conditions,that is,the renewable energy source-thermal scheduling concept,on IEEE 9-bus,IEEE 39-bus,and Indian Northern Region Power Grid 246-bus test *** findings show that the proposed technique outperforms existing well-established optimization strategies.

关键词： Available transfer capability(ATC) biogeography-based optimization(BBO) chaotic map chaotic selfish herd optimizer(CSHO) grey wolf optimizer(GWO) optimum power flow(OPF) power generation cost(PGC) renewable energy sources(RES) selfish herd optimizer(SHO)

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A DTN Oriented Adaptive Routing Algorithm Based on Node Load

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China Communications 2022年第12期19卷 54-63页

作者： Hongyan Cui Diyue Chen roy E.Welsch State Key Laboratory of Networking and Switching Technology Beijing University of Posts and TelecommunicationsBeijing 100876China Beijing Laboratory of Advanced Information Networks Beijing University of Posts and TelecommunicationsBeijing 100876China Massachusetts Institute of Technology CambridgeMA 02139USA

In recent years,Delay Tolerant Networks(DTN)have received more and more *** the same time,several existing DTN routing algorithms generally have disadvantages such as poor scalability and inability to perceive changes in the network *** paper proposes an AdaptiveSpray routing *** algorithm can dynamically control the initial maximum message copy number according to the cache occupancy rate of the node itself,and the cache occupancy rate is added as an impact factor to the calculation of the probability of each node meeting the destination *** the forwarding phase,the node will first compare the meeting probability of itself and the meeting node to the destination node,and then choose different forwarding *** simulation shows that the AdaptiveSpray algorithm proposed in this paper has obvious advantages compared with the existing routing algorithms in terms of message delivery rate and average delay.

关键词： DTN routing algorithm adaptive cache management

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Reveal Hydrogen Behavior at Grain Boundaries in Fe-22Mn-0.6C TWIP Steel via In Situ Micropillar Compression Test

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Acta Metallurgica Sinica(English Letters) 2023年第7期36卷 1095-1104页

作者： Xu Lu Dong Wang Di Wan Xiaofei Guo roy Johnsen Department of Mechanical and Industrial Engineering Norwegian University of Science and Technology7491 TrondheimNorway School of Materials Science and Engineering Shanghai UniversityShanghai 200444China Steel Institute(IEHK) RWTH Aachen University52072 AachenGermany

In this study,the effect of hydrogen on dislocation and twinning behavior along various grain boundaries in a high-manganese twinning-induced plasticity steel was investigated using an in situ micropillar compression *** compressive stress in both elastic and plastic regimes was increased with the presence of *** investigation by transmission electron backscatter diffraction and scanning transmission electron microscope demonstrated that hydrogen promoted both dislocation multiplication and twin formation,which resulted in higher stress concentration at twin-twin and twin-grain boundary intersections.

关键词： Hydrogen TWIP steel Micropillar compression Grain boundary t-EBSD

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In situ nanomechanical characterization of hydrogen effects on nickel-based alloy 725 under different metallurgical conditions

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Journal of Materials Science & Technology 2023年第4期135卷 156-169页

作者： Xu Lu Yan Ma Ding Peng roy Johnsen Dong Wang Department of Mechanical and Industrial Engineering Norwegian University of Science and Technology(NTNU)7491 TrondheimNorway Max-Planck-Institut für Eisenforschung GmbH 40237 DüsseldorfGermany Department of Physics Norwegian University of Science and Technology(NTNU)7491 TrondheimNorway

The effect of hydrogen on the surface morphology and nanomechanical properties of Ni-based Alloy 725 under solution-annealed(SA)and precipitation-hardened(API)conditions was thoroughly *** investigation involved in situ nanoindentation testing,microscopy characterization,statistical analy-sis,and numerical simulation *** results showed the distinctive effects of hydrogen on the pop-in and hardness in the SA and API *** the SA sample,hydrogen mainly dissolved as solid solute in the matrix,causing enhanced lattice friction on the dislocation motion and increasing the in-ternal stress via lattice ***,an enhanced hardness,a reduced pop-in width/load ratio,and numerous surface steps were detected in the presence of *** the API sample,the strengtheningγ″phases were the stress concentrators,and the dislocations nucleated heterogeneously,demonstrating indistinctive pop-in ***,the precipitates in the API sample affected the trapping be-havior of hydrogen,thereby resulting in the hardness change,which reflected the competition between solution hardening in the matrix and vacancy softening mechanism in precipitates.

关键词： Hydrogen Nickel-based alloy In situ nanoindentation Precipitates Dislocation nucleation Hardness

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Decrypting a path based approach for identifying the interplay between PI3K and GSK3 signaling cascade from the perspective of cancer

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Genes & Diseases 2022年第4期9卷 868-888页

作者： Abhijit Das Barshana Bhattacharya Souvik roy Department of Pharmacology NSHM Knowledge CampusKolkata-Group of InstitutionsKolkata 700053India

Cancer is one of those leading diseases worldwide, which takes millions of lives every year. Researchers are continuously looking for specific approaches to eradicate the deadly disease, ensuring minimal adverse effects along with more therapeutic significance. Targeting of different aberrantly regulated signaling pathways, involved in cancer, is surely one of the revolutionary chemotherapeutic approach. In this instance, GSK3 and PI3K signaling cascades are considered as important role player for both the oncogenic activation and inactivation which further leads to cancer proliferation and metastasis. In this review, we have discussed the potential role of GSK3 and PI3K signaling in cancer, and we further established the crosstalk between PI3K and GSK3 signaling, through showcasing their cross activation, cross inhibition and convergence pathways in association with cancer. We also exhibited the effect of GSK3 on the efficacy of PI3K inhibitors to overcome the drug resistance and preventing the cell proliferation, metastasis in a combinatorial way with GSK3 inhibitors for a better treatment strategy in clinical settings.

关键词： Cancer Chemotherapy Drug resistance GSK3 PI3K

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Convergence of Weak Galerkin Finite Element Method for Second Order Linear Wave Equation in Heterogeneous Media

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Numerical Mathematics(Theory,Methods and Applications) 2023年第2期16卷 323-347页

作者： Bhupen Deka Papri roy Naresh Kumar Raman Kumar Department of Mathematics Indian Institute of Technology GuwahatiGuwahati 781039India

Weak Galerkin finite element method is introduced for solving wave equation with interface on weak Galerkin finite element space(Pk(K),P_(k−1)(∂K),[P_(k−1)(K)]^(2)).Optimal order a priori error estimates for both space-discrete scheme and implicit fully discrete scheme are derived in L1(L2)*** method uses totally discontinuous functions in approximation space and allows the usage of finite element partitions consisting of general polygonal *** element algorithm presented here can contribute to a variety of hyperbolic problems where physical domain consists of heterogeneous media.

关键词： Wave equation heterogeneous medium finite element method weak Galerkin method semidiscrete and fully discrete schemes optimal error estimates

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Robust backstepping global integral terminal sliding mode controller to enhance dynamic stability of hybrid AC/DC microgrids

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Protection and Control of Modern Power Systems 2023年第1期8卷 139-151页

作者： Tushar Kanti roy Subarto Kumar Ghosh Sajeeb Saha Department of Electronics&Telecommunication Engineering Rajshahi University of Engineering and TechnologyRajshahi 6204Bangladesh Department of Electrical and Electronic Engineering Rajshahi University of Engineering and TechnologyRajshahi 6204Bangladesh School of Science Technology and EngineeringUniversity of the Sunshine CoastMoreton Bay CampusQueenslandAustralia

In this paper,a Backstepping Global Integral Terminal Sliding Mode Controller(BGITSMC)with the view to enhancing the dynamic stability of a hybrid AC/DC microgrid has been *** proposed approach controls the switch-ing signals of the inverter,interlinking the DC-bus with the AC-bus in an AC/DC microgrid for a seamless interface and regulation of the output power of renewable energy sources(Solar Photovoltaic unit,PMSG-based wind farm),and Battery Energy Storage *** proposed control approach guarantees the dynamic stability of a hybrid AC/DC microgrid by regulating the associated states of the microgrid system to their intended *** dynamic stabil-ity of the microgrid system with the proposed control law has been proved using the Control Lyapunov Function.A simulation analysis was performed on a test hybrid AC/DC microgrid system to demonstrate the performance of the proposed control strategy in terms of maintaining power balance while the system’s operating point ***,the superiority of the proposed approach has been demonstrated by comparing its performance with the existing Sliding Mode Control(SMC)approach for a hybrid AC/DC microgrid.

关键词： Dynamic stability Hybrid AC/DC microgrids Power balance Robust backstepping controller Global integral terminal sliding mode controller Switching control signals

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Methyl Ester Type Produced by Catalytic Transesterification:From Various Oil Feedstock to Biodiesel Products

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Energy Engineering 2022年第6期119卷 2255-2276页

作者： Aman Santoso Sumari Sumari Muhammad roy Asrori Department of Chemistry Universitas Negeri MalangMalang65145Indonesia

Biodiesel research has been carried out via ***,biodiesel products(methyl esters)have not encountered new insights,because feedstocks have been explored and *** optimum conditions on transesterification reaction could produce different methyl ester type with different ***,this review describes various oil feedstock that were to find new insights about methyl ester *** review took the results of study that has been published with experience for 10 *** results of the study reviewed on the transesterification method,characterization of methyl esters,and its *** component reviewed and correlated to the literature,structure,and GC-MS *** review can provide challenges for methyl ester research in future research.

关键词： Biodiesel methyl ester transesterification feedstock catalytic reaction

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Early Detection of Pancreatic Cancer Using Jaundiced Eye Images

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Computer Systems Science & Engineering 2022年第5期41卷 677-688页

作者： R.Reena roy G.S.Anandha Mala Department of Information Technology Easwari Engineering CollegeChennaiTamilnadu600089India

Pancreatic cancer is one of the deadliest cancers,with less than 9%survival *** Ductal Adeno Carcinoma(PDAC)is common with the general public affecting most people older than *** detection of PDAC is often challenging because cancer symptoms will progress only at later stages(advanced stage).One of the earlier symptoms of PDAC is *** with diabetes,obesity,and alcohol consumption are also at higher risk of having pancreatic cancer.A decision support system is developed to detect pancreatic cancer at an earlier stage to address this *** such as Mean Hue,Mean Saturation,Mean Value,and Mean Standard Deviation are computed after color space conversion from RGB to *** k-Nearest Neighbor(F-kNN)is designed for *** system proposed is trained and tested using features extracted from jaundiced eye *** proposed system results indicate that this model can predict pancreatic cancer as earlier as possible,helping clinicians make better decisions for surgical planning.

关键词： Pancreatic adeno carcinoma fuzzy-based classifier jaundiced eye classification system

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Sono-Transesterification of Kapok Seed Oil with CaO:BaO-(x:y)/Active Natural Zeolite Catalyst

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Journal of Renewable Materials 2022年第12期10卷 3659-3670页

作者： Sumari Sumari Mega Murti Aman Santoso Muhammad roy Asrori Department of Chemistry Faculty of Mathematics and Natural SciencesUniversitas Negeri MalangMalang65145Indonesia

Kapok seed oil is an environmentally friendly biodiesel *** problem of the best catalyst for transester-ification of Kapok seed oil still continues *** research developed a base-heterogeneous catalyst with the effect of ultrasonic waves during ***,the study aims:(1)to determine the type of natural zeolite used,(2)to determine the characteristics of the synthesized CaO:BaO/ANZ catalyst,and(3)to determine the effectiveness of the CaO:BaO/ANZ catalyst in the biodiesel production process through sono-transeste rification of kapok seed *** research stages consisted of:(1)activation of natural zeolite and its characterization,(2)preparation of CaO:BaO/ANZ catalyst,(3)characterization of CaO:BaO/ANZ catalyst,(4)esterification and uti-lization of catalyst in the transesterification,(5)analysis of transesterified *** results showed that the natural zeolite type from the southerm area of Malang is mordenite(MOR)***,after the natural zeolite was impregnated,the obtained catalyst compositions were CaO:BaO-9:9/ANZ,CaO:BaO-14:9/ANZ,and CaO:BaO-4:11/ANZ with a surface area of 129.7;124.6;128.5 m^(2)/g,and acidity of 1.037;0.254;and 0.685 mmol/g,*** best catalyst for transesterification of kapok seed oil was CaO:BaO-9:9/ANZ,which resulted in a biodiesel yield of 73.6%with a density of 889.6 kg/m^(3) and kinematic viscosity of 2.987 *** characteristics of the produced biodiesel meet requirement of SNI 7182:2015.

关键词： Natural zeolite heterogeneous catalyst biodiesel kapok seed oil transesterification ultrasonication

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