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Aerodynamics of a Tandem-Bladed Axial Compressor rotor under Circumferential Distortion at Different rotational Speeds

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Journal of Thermal Science 2024年第4期33卷 1340-1356页

作者： Amit KUMAr Jerry T.john A.M.PrADEEP r.A.DAKKErMANS Dragan KOZULOVIC Department of Aerospace Engineering Indian Institute of Technology BombayMumbai400076India Department of Automotive and Aeronautical Engineering Hamburg University of Applied Sciences20099HamburgGermany Institute of Jet Propulsion Bundeswehr University Munich85577NeubibergGermany

For most aircraft engines,inflow distortion is *** distortion is known to degrade the aerodynamic performance and stable operating limits of a *** rotor configuration is an arrangement that effectively controls the growth of the boundary layer over the suction surface of the ***,a higher total pressure rise can be achieved through this unconventional design approach involving the splitting of the blade into forward and aft *** is expected that the effect of inlet flow distortion would be more severe for a tandem-rotor design due to the greater flow turning inherent in such ***,this aspect needs to be thoroughly *** present study discusses the effect of circumferential distortion on the tandem-rotor at different rotational ***-annulus rANS simulations using ANSYS CFX are used in the present *** performance of the rotor at a particular flow coefficient and different rotational speeds is *** total pressure and efficiency are observed to drop at lower mass flow rates under the influence of circumferential *** loss region in each blade passage is mainly associated with the blade wake,tip leakage vortex,secondary flow,and boundary ***,their contribution varies from passage to passage,particularly in the distorted *** the lower span,the wake width is found to be higher than that at a higher *** to the redistribution of the mass flow,the circumferential extent reduces at a higher *** the undistorted sector,the strength of the tip leakage vortex is significantly higher at the design rotational speed than at lower *** distortion near the tip region promotes an early vortex breakdown even at the design operating *** adversely affects the total pressure,efficiency,and stall *** clean flow conditions,this phenomenon is only observed near the stall *** the design operating condition,the breakdown of the forward rotor tip l

关键词： tandem rotor circumferential distortion loss tip leakage vortex vortex breakdown diffusion factor aerodynamics of compressor blade

robust Machine Learning Mapping of sEMG Signals to Future Actuator Commands in Biomechatronic Devices

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Journal of Bionic Engineering 2024年第1期21卷 270-287页

作者： Ali Nasr Sydney Bell rachel L.Whittaker Clark r.Dickerson john McPhee Systems Design Engineering University of WaterlooWaterloo N2L 3G1Canada Kinesiology and Health Sciences University of WaterlooWaterloo N2L3G3Canada

A machine learning model for regression of interrupted Surface Electromyography(sEMG)signals to future control-oriented signals(e.g.,robot’s joint angle and assistive torque)of an active biomechatronic device for high-level myoelectric-based hierarchical control is proposed.A recurrent Neural Network(rNN)was trained using output data,initially obtained from offline optimization of the biomechatronic(human–robot)device and shifted by the prediction *** input of the rNN consisted of interrupted sEMG signals(to mimic signal disconnections)and previous kinematic signals of the assistive *** rNN with a 0.1-s prediction horizon could predict the control-oriented joint angle and assistive torque with 92%and 86.5%regression accuracy,respectively,for the test *** proposed approach permits a fast,predictive,and direct estimation of control-oriented signals instead of an iterative process that optimizes assistive torque in the inverse dynamic simulation of a multibody human–robot *** with these interrupted input signals significantly improves the regression accuracy in the case of sEMG signal *** robust Predictive Control-oriented Machine Learning(robust-MuscleNET)model can support volitional high-level myoelectric-based control of biomechatronic devices,such as exoskeletons,prostheses,and assistive/resistive *** work should study the application to prosthesis control as well as the repeatability of the high-level controller with electrode *** low-level hierarchical controller that manages the human–robot interaction,the assistance/resistance strategy,and the actuator coordination should also be studied.

关键词： Myoelectric-based control-Surface electromyography Machine learning Multibody system dynamics Exoskeleton Bionic

Provenance and depositional setting of the Late MiocenePleistocene clastic sediments in the eastern Arabian Peninsula and western Iraq using rare earth elements geochemistry

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Acta Geochimica 2024年第2期43卷 399-410页

作者： Salih M.Awadh Zinah S.Al-Ankaz Mohanad r.A.Al-Owaidi john S.Armstrong-Altrin Department of Geology College of ScienceUniversity of BaghdadBaghdadIraq Department of Geology College of ScienceUniversity of WasitWasit 52011Iraq Department of Applied Geology College of ScienceUniversity of BabylonBabylon 51001Iraq Unidad de Procesos Oceanicos y Costeros Instituto de Ciencias del Mar y LimnologíaUniversidad Nacional Autonoma de MexicoCiudad Universitaria04510 Mexico CityCDMXMexico Department of Marine Sciences Bharathidasan UniversityTiruchirapalliTamil Nadu 620024India

The sandstones of the Late miocene–Pliocene Dibdibba Formation in the Najaf–Karbala Plateau and Basra were examined to determine their source rocks and origin. The rare earth elements(rEE) and trace elements(Sc, Co, V, and Th) concentrations in these sandstones revealed that they likely derived from a single source. The steep light rare earth elements(LrEE) and flat, heavy rare earth element(HrEE) patterns, negative Eu anomaly, and high ΣrEE contents in sandstones suggest its derivation from a suggests that a passive continental margin environment and originated from felsic source rocks. The average concentration of ΣrEE is 93.5 ppm, which is lower than that of the average crustal compositions like Upper Continental Crust and Post Archean Australian Shale. The higher proportion of LrEE compared to HrEE implies that these sandstones were recycled and derived from a distal source. The Th/Co, Th/Sc, La/Sc, La/Co, Eu/Eu*and(La/Lu)cn elemental ratios indicated that these Late Miocene–Pliocene sandstones were derived from felsic rocks located in the marginal region of the Arabian Shield.

关键词： rEE Dibdibba formation Clastic sediments Passive continental margin

Proof of Concept for a Twin Prime Number Universe Using Set Theory

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American Journal of Computational Mathematics 2024年第3期14卷 305-317页

作者： john r. Crary Independent researcher Lake Zurich IL USA

The Fine Structure Constant (eFSC) Model attempts to give a classical definition to a magical number that underlies much of quantum physics. The Fine Structure Constant (α) value equal to 137.03599206 represents a dimensionless constant that characterizes the strength of the electromagnetic (EM) interaction between subatomic charged particles. Python-generated property counts for the twin prime force F{139/137} show that the adjusted ratio gives a value of α = 137.036. This implies a mathematical framework underlying this constant is based on twin prime numbers and set theory. This study attempts to demonstrate a proof of concept that a hierarchy of fractional twin prime (αII) forces replicates the quantum nature of the universe and is aligned with the Standard Model of Particle Physics. An expanded eFSC Model demonstrates that twin prime forces and their property sets are mathematically viable substitutes for nuclear reactions, as demonstrated for the Beta-minus decay of neutrons into protons. Most significantly, the positive and negative prime numbers define these nuclear reactants and products as positive or negatively charged ions. Furthermore, the eFSC Model provides new insights regarding the hierarchy of EM forces underlying the quantum nature of the universe.

关键词： Fine Structure Constant (α) Prime Numbers Set Theory Conceptual Model Quantum Physics Light and Matter Beta-Minus Decay

Brain research on Mental Disorders: A Criticism

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Open Journal of Medical Psychology 2024年第3期13卷 71-85页

作者： john r. rossiter Faculty of Business and Law University of Wollongong Wollongong Australia School of Psychology Charles Sturt University Wagga Wagga Australia

Objective: To expose the problems and inherent limitations of neuroscience-based brain research on mental disorders. Method: Discussion of the theory underlying brain research on mental disorders, followed by a systematic evaluation of typical studies. results: The fundamental problem is that brain researchers fail to differentiate between biological mental disorders in which brain processes cause the disorder (notably schizophrenia, bipolar disorder, and melancholic depression) and learned mental disorders in which brain processes mediate but do not cause the disorder (which is the case with reactive depression, reactive anxiety, OCD, and PTSD). researchers have been unsuccessful in identifying mechanisms in the brain that cause biological mental disorders, and will never be able to locate the innumerable specific neural connections that mediate learned mental disorders. Moreover, the author’s review of typical studies in this field shows that they have serious problems with theory, measurement, and data analysis, and that their findings cannot be trusted. Conclusions: Neuroscience-based brain research on mental disorders, unlike other neurological research, has been an expensive failure and it is not worth continuing.

关键词： Neuroscience-Based Brain research Biological Mental Disorders Learned Mental Disorders research Problems

The Quantum Microverse: A Prime Number Framework for Understanding the Universe

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American Journal of Computational Mathematics 2024年第2期14卷 264-274页

作者： john r. Crary Independent researcher Lake Zurich IL USA

This study aims to demonstrate a proof of concept for a novel theory of the universe based on the Fine Structure Constant (α), derived from n-dimensional prime number property sets, specifically α = 137 and α = 139. The FSC Model introduces a new perspective on the fundamental nature of our universe, showing that α = 137.036 can be calculated from these prime property sets. The Fine Structure Constant, a cornerstone in Quantum Electrodynamics (QED) and Quantum Chromodynamics (QCD), implies an underlying structure. This study identifies this mathematical framework and demonstrates how the FSC model theory aligns with our current understanding of physics and cosmology. The results unveil a hierarchy of α values for twin prime pairs U{3/2} through U{199/197}. These values, represented by their fraction parts α♊ (e.g., 0.036), define the relative electromagnetic forces driving quantum energy systems. The lower twin prime pairs, such as U{3/2}, exhibit higher EM forces that decrease as the twin pairs increase, turning dark when they drop below the α♊ for light. The results provide classical definitions for Baryonic Matter/Energy, Dark Matter, Dark Energy, and Antimatter but mostly illustrate how the combined α♊ values for three adjacent twin primes, U{7/5/3/2} mirrors the strong nuclear force of gluons holding quarks together.

关键词： Fine Structure Constant Fractional Coupling Constants Matter/Antimatter Dark Matter/Energy Quantum Gravity Prime Numbers Set Theory

results of the Second Life Metabolism Travel Awards 2024

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Life Metabolism 2024年第3期3卷 1-2页

作者： john r.Speakman Shenzhen Key Laboratory of Metabolic Health Center for Energy Metabolism and ReproductionShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenGuangdong 518055China State Key Laboratory of Molecular Developmental Biology Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing 100101China Institute of Biological and Environmental Sciences University of AberdeenAberdeenAB242TZScotlandUnited Kingdom

This year is the second year of the Life Metabolism Travel Prize Awards for PhD students and *** three 700 US$awards are generously sponsored by Sable Systems-Promethion(China)who manufacture metabolic *** I announce the winners and their interesting projects,I will just reiterate how the judging of the awards *** first remove anything from the submission that would identify the sex,affiliation,or ethnicity of the applicant.

关键词： remove Travel Awards

Global lessons on delivery of primary healthcare services for people with non-communicable diseases:convergent mixed methods

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Family Medicine and Community Health 2024年第3期12卷 13-24页

作者： robert Mash Lisa r Hirschhorn Inayat Singh Kakar renu john Manushi Sharma Devarsetty Praveen Stellenbosch University StellenboschSouth Africa Northwestern University ChicagoIllinoisUSA The George Institute for Global Health New DelhiIndia The George Institute for Global Health HyderabadIndia Manipal Academy of Higher Education ManipalIndia

Objective To extract key lessons on primary healthcare(PHC)service delivery strategies for non-communicable diseases(NCD)from the work of researchers funded by the Global Alliance for Chronic Diseases(GACD).Design A convergent mixed methods study that extracted data using a standardised template from research projects funded by the GACD that focused on *** strategies implemented in these studies were mapped onto the PHC Performance Initiative *** qualitative interviews were conducted with researchers from purposefully selected projects to understand the strategies and contextual factors in more *** PHC contexts from low or middle-income countries(LMIC)as well as vulnerable groups within high-income *** came from all regions of the world,particularly East Asia and Pacific,sub-Saharan Africa,South Asia,Latin America and *** The study extracted data on 84 research projects and interviewed researchers from 16 research *** research projects came from all regions of the world,and mainly focused on diabetes(35.3%),hypertension(28.3%)and mental health(27.6%).Mapped onto the PHC Performance Initiative framework:49.4%focused on high-quality PHC(particularly the comprehensiveness of NCD care,41.2%);41.2%on the availability of PHC services(particularly the competence of healthcare workers,36.5%);35.3%on population health management(particularly community-based services,35.3%);34.1%on facility organisation and management(particularly team-based care,20.0%)and 31.8%on access(particularly digital technology,23.5%).Most common strategies were task shifting and training to improve the comprehensiveness of NCD care through community-based *** factors related to inputs:infrastructure,equipment and medication,workforce(particularly community health workers),finances,health information systems and digital *** Key strategies and contextual factors to improve PHC service del

关键词： services convergent income

Storylines of family medicine Ⅲ:core principles—primary care,systems and family

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Family Medicine and Community Health 2024年第S3期12卷 23-32页

作者： William B Ventres Leslie A Stone Timothy A Joslin john W Saultz Sommer Aldulaimi Paul r Gordon john C Lane Eric r Lee Jacob Prunuske Limor Gildenblatt Michael H Friedman Colleen T Fogarty Susan H McDaniel Tessa rohrberg Amy Odom Family and Preventive Medicine University of Arkansas for Medical Sciences College of MedicineLittle RockArkansasUSA Family Medicine Oregon Health&Science UniversityPortlandOregonUSA Family and Community Medicine University of Arizona Medical Center–South CampusTucsonArizonaUSA Family and Community Medicine University of Arizona Medical Center–University CampusTucsonArizonaUSA UAMS West regional Campus Family Medicine residency Program Fort SmithArkansasUSA Medical College of Wisconsin–Central Wisconsin Campus WausauWisconsinUSA Family and Community Medicine Medical College of Wisconsin–Central Wisconsin CampusWausauWisconsinUSA Family Medicine Advocate Illinois Masonic Medical CenterChicagoIllinoisUSA Family Medicine Presence Saints Mary and Elizabeth Medical CenterChicagoIllinoisUSA Family Medicine University of Rochester Medical CenterRochesterNew YorkUSA Psychiatry and Family Medicine University of Rochester Medical CenterRochesterNew YorkUSA Family and Community Medicine University of Kansas School of Medicine-WichitaWichitaKansasUSA Sparrow/Michigan State University Family Medicine residency Program LansingMichiganUSA

Storylines of Family Medicine is a 12-part series of thematically linked mini-essays with accompanying illustrations that explore the many dimensions of family medicine,as interpreted by individual family physicians and medical educators in the USA and elsewhere around the ***‘Ⅲ:core principles—primary care,systems,and family’,authors address the following themes:‘Continuity of care—building therapeutic relationships over time’,‘Comprehensiveness—combining breadth and depth of scope’,‘Coordination of care—managing multiple realities’,‘Access to care—intersectional,systemic,and personal’,‘Systems theory—a core value in patient-centered care’,‘Family-oriented practice—supporting patients’health and well-being’,‘Family physician as family member’and‘Family in the exam room’.May readers develop new understandings from these essays.

关键词： individual Storyline principles