04385nam 2200469 450 991062724160332120230226140245.0981-19-3579-3(MiAaPQ)EBC7101946(Au-PeEL)EBL7101946(CKB)24950432600041(PPN)264954386(EXLCZ)992495043260004120230226d2022 uy 0engurcnu||||||||txtrdacontentcrdamediacrrdacarrierTransactions on engineering technologies proceedings of World Congress on Engineering 2021 /Sio-Iong Ao and Len GelmanSingapore :Springer,[2022]©20221 online resource (118 pages)Lecture Notes in Electrical EngineeringPrint version: Ao, Sio-Iong Transactions on Engineering Technologies Singapore : Springer,c2022 9789811935787 Intro -- Preface -- Contents -- Piecewise Monotonic Fitting for Covid-19 Data Analysis of the United Kingdom During 31-01-2020 to 19-11-2021 -- 1 Introduction -- 2 Piecewise Monotonic Approximation -- 3 Application to UK Covid-19 Data -- 3.1 Covid-19 New Cases -- 3.2 Covid-19 New Deaths -- 4 Analysis Through the Timeline of the Pandemic -- 4.1 New Covid-19 Cases -- 4.2 New Covid-19 Deaths -- 5 Conclusions -- References -- On the Free Boundary Problem for the Low Reynolds Number -- 1 Introduction -- 2 The Steady Case -- 3 The Solution of Problem 1 -- 4 The Unsteady Case -- 5 The Solution of Problem 2 -- 6 Examples -- 7 Conclusion and Future Work -- References -- Community Detection on Proximity Networks -- 1 Introduction -- 2 Community Detection Algorithms -- 2.1 Overlapping Algorithms -- 2.2 Partitioning Algorithms -- 3 Data Sets -- 4 Community Structure Evaluation -- 5 Results -- 5.1 Qualitative Evaluation of the Algorithms -- 5.2 Comparing Algorithms with NMI -- 6 Conclusion -- References -- A Machine-Learnt Approach to Market Segmentation and Purchase Prediction Using Point-Of-Sale (POS) Data -- 1 Introduction -- 2 Literature Review -- 2.1 Methodology-Based and Application-Based Market Segmentation -- 2.2 Machine Learning in Market Segmentation -- 3 Methodology -- 4 Results -- 5 Discussion and Conclusion -- References -- Feasibility and Benefits of Small Photovoltaic Systems in Ghana -- 1 Introduction -- 2 Methodology -- 2.1 Evaluation Factors -- 3 Results and Discussion -- 3.1 Stand-Alone Community Centre -- 3.2 Grid-tied System -- 4 Conclusion -- References -- Design of Multiple Bearing Placements for Brush Cutter Vibration Reduction -- 1 Introduction -- 2 Main Concept and Analysis Method -- 2.1 Concept of Span-Tuning Dynamic Vibration Absorbers (ST-DVAs) -- 2.2 Finite Element Frequency Response Analysis -- 3 Analysis Results and Discussion.3.1 Resonance Suppression for Multiple Excitation Sources by ST-DVAs -- 3.2 Applied Design Method of ST-DVAs -- 3.3 Other Result: Installation Position of ST-DVA -- 4 Conclusion -- References -- Experimental DEM Hybrid Approach for Prediction of Landslide in Ughelli Sandstone -- 1 Introduction -- 2 Experiments and Discrete Element Modeling -- 2.1 Determination of Normal Stiffness and Shear Stiffness in Sandstone -- 3 Results -- 4 Discussion of Results -- 5 Conclusion and Future Work -- References -- Extracting the Efficient Model of Cylindrical and Conical Basins from Different Aspect Ratios -- 1 Introduction -- 2 Methodology -- 2.1 Designed Model -- 2.2 Mathematical Modeling -- 2.3 Numerical Analysis -- 3 Results and Discussions -- 3.1 Pressure Loss -- 3.2 Effect on Channel -- 3.3 Effect of Velocity on Vortex Chamber -- 3.4 Effect of Pressure on Vortex Chamber -- 3.5 Effect on Outlet Pipe Section -- 3.6 Observation on Swirling Strength and Vortex Core Velocity -- 4 Conclusion -- References.Lecture notes in electrical engineering.EngineeringCongressesEngineeringResearchEngineeringEngineeringResearch.620Ao Sio-Iong1183906Gelman LenMiAaPQMiAaPQMiAaPQBOOK9910627241603321Transactions on Engineering Technologies2975444UNINA