Motor - Science topic

Every day walking consists of frequent voluntary modifications in the gait pattern to negotiate obstacles. After spinal cord injury, stepping over an obstacle becomes challenging. Stepping over an obstacle requires sensorimotor transformations in several structures of the brain, including the parietal cortex, premotor cortex, and motor cortex. Sens...

The role of digital technology in sport has seen increasing use. For example, video recordings from stationery cameras are now almost mainstream to enable coaches and athletes painstakingly examine performance by pausing, rewinding, and slowing advancing video data (frame by frame) to examine fine motor movements. However, subjective opinion and vi...

In this paper we propose a system for intuitively controlling a robotic arm using hand tracking through an HMD (Head Mount Display). To control the robotic arm by tracking the human body, it is necessary to transmit angle values to each motor. At this time, the system needs to know how much each human joint is rotated, i.e., the joint values, and b...

The mixing of motorized and non-motorized vehicles in the central area of the intersection with a high density of interaction behavior leads to a high risk of collision that seriously endangers users. To devise effective control strategies for risky driving behavior, it is crucial to model how risk evolves during these interactions. This study pres...

Parkinson's Disease (PD) is a gradually worsening neuro-logical condition in which several neurons become impaired with aging. This impairment of neurons leads to a decrease in dopamine production, which is the primary cause of Parkinson's disease. PD impairs motor functions and hinders cognitive and emotional stability, noticeably degrading the pa...

Accelerating the rotational speed of light-driven molecular motors is among the foremost concerns in molecular machine research, as this speed directly influences the performance of a motor. Controlling the motor’s rotation is crucial for practical applications, and using an oriented external electric field (OEEF) represents a feasible method to ac...

While biological machines are powered mainly by chemical transformations, chemically driven artificial rotary motor systems are very limited. Here, we report an aniline‐phenol‐based rotary molecular motor that operates via an information ratchet mechanism. The 360° directional rotation about a single covalent bond can be chemically driven by revers...

Objectives: The present research aims to highlight the impact of hyperammonemia, a common pediatric metabolic disease, on children’s language and feeding skills. This research was conducted through a literature review and the presentation of a 2.5-year-old girl diagnosed with hyperammonemia. Case Presentation: The research was conducted on a 2.5-ye...

El informe muestra los principales resultados de la actividad emprendedora en la región de Antofagasta correspondiente al año 2023. Los resultados sugieren a los responsables del diseño de políticas públicas de considerar el emprendimiento como uno de los motores de la reactivación económica postpandemia.

Every company depends on human resources who play an important role in being able to achieve company goals. The success of a company can be reflected in the performance of the company's employees. The purpose of this study is to find out what is the influence of transactional leadership, motivation and work discipline on employee performance at PT....

The purpose of this study is to analyze the impact of price perception, service quality, and location on customer satisfaction at CK Motor Body Repair Workshop in Purbalingga. This research employs a quantitative approach with a questionnaire as the primary data collection tool. The sample consists of 113 customers of CK Motor Body Repair Workshop...

Los hábitos de sueño tienen un impacto significativo en la productividad laboral, especialmente en microempresarios que enfrentan múltiples responsabilidades y altos niveles de estrés. Este estudio analiza la relación entre la calidad del sueño y la productividad de los microempresarios en el municipio de San Juan del Río, México. Se realizó un aná...

Bu deneysel çalışmada, düşük ve yüksek serbest yağ asit (SYA) içeriğine sahip iki farklı yağdan biyodizel üretimi gerçekleştirilmiştir. Üretilen yakıtların fiziksel ve kimyasal özellikleri incelenerek, dizel bir motorda kullanılabilirliğinin kimyasal laboratuvar sonuçları kapsamındaki yorumlanması amaçlanmıştır. Kanola ve atık bitkisel yağın SYA or...

Kinesin-2 motors have been demonstrated to regulate Hedgehog (HH) signaling, particularly within the developing cerebellum (Spassky et al., 2008; Waas et al., 2024). KIF3A/KIF3B are required for ciliogenesis in mice, and loss of this motor complex results in cerebellar hypoplasia due to lack of mitogenic response of HH-responsive cerebellar granule...

BIOTREND: integrando y poniendo en valor el monitoreo a largo plazo de la biodiversidad terrestre

Parkinson’s Disease (PD) is a progressive neurodegenerative disorder affecting millions worldwide. Early detection is crucial for improving patient outcomes. Spiral drawing analysis has emerged as a non-invasive tool to detect early motor impairments associated with PD. This study examines the performance of hybrid deep learning and machine learnin...

According to the CDC, there were 91,799 drug overdose deaths in 2020 in the United States [2]. Since the COVID-19 pandemic, many people have had depression and other mental illnesses that often lead to suicide, and the number of deaths due to drug overdose has increased. There is also a high chance of the elderly accidentally consuming more pills t...

Visuospatial Neglect (VSN) affects spatial awareness, leading to functional and motor challenges. This study explores virtual reality (VR) as a potential complementary tool for VSN rehabilitation, offering a novel environment that intends to support therapy outcomes. Specifically, we aim to explore the initial experiences of patients and physiother...

This study aims to determine whether work discipline and motivation simultaneously or partially affect the performance of employees at PT. Ahass Daya Motor. This research uses a quantitative methodology. The study was conducted at PT. Ahass Daya. The sample for this study consisted of 36 employees of PT. Ahass Daya Motor. Saturated sampling is the...

BACKGROUND While the symptoms of Huntington’s disease (HD) typically first appear around the age of 40 years, 5%–10% of patients experience symptoms before the age of 21 years, in which case it is classified as juvenile Huntington’s disease (JHD). JHD poses a unique clinical problem, as affected patients experience rapid deterioration in their qual...

Permanent magnet-assisted synchronous reluctance motors (PMA-SynRMs) are widely used in various fields due to their significant advantages, including strong torque output, high efficiency, excellent speed regulation, and low cost. The PMA-SynRM with asymmetric-rotor structure has a weaker anti-demagnetization performance than the conventional PMA-S...

Introduction Serious Games are games with a learning objective that aim to improve motor and cognitive skills by simulating challenges similar to real life. This makes them suitable as they allow the treatment, diagnosis and assessment of health conditions, making it possible to use them in interventions with children who have Developmental Coordin...

The hydraulic secondary regulation system, which utilizes hydraulic servo motors for throttle-free operation, is a prevalent energy-saving fluid transmission mechanism. The incorporation of accumulators, while improving energy recovery, also affects the system pressure. Most studies focus on controlling the secondary regulation system within a cons...

Stunting is a condition where a person's height is less than normal based on age and gender. Stunting can impact motor and verbal development, increase degenerative diseases, morbidity and mortality. This research is quantitative research, this type of research uses the pre-experimental design method, with one group pre-test and post-test research....

The study investigated the effects of Heidelberg Ballschule motor proficiency and visual-motor skills of 7–9 year-old girls. A sample of 30 girls participated in a semi-experimental study, with pre-test and post-test evaluations conducted. The Bruininks-Oseretsky test and the test of visual-motor skills were used to assess motor proficiency and vis...

Resumo Introdução Os Serious Games são jogos com objetivo de aprendizagem que visam melhorar habilidades motoras e cognitivas ao simular desafios semelhantes aos da vida real. Isso os torna adequados, pois permite o tratamento, diagnóstico e avaliação de condições de saúde, sendo possível utilizar em intervenções com crianças que possuem Transtorno...

Past work has shown that stimuli timed to the cardiac systole, the time at which heartbeat feedback is transmitted to the brain, can be more effectively selected from conflicting information. Here, we investigated how the temporal alignment of distracting information to different phases of the cardiac cycle impacts inhibitory performance on a stop-...

This paper introduces a novel approach to quantify the uncertainties in fault diagnosis of motor drives using Bayesian neural networks (BNN). Conventional data-driven approaches used for fault diagnosis often rely on point-estimate neural networks, which merely provide deterministic outputs and fail to capture the uncertainty associated with the in...

This project examines Toyota's strategic journey, focusing on its expansion into Malaysia through UMW Toyota Motor and its global competitive positioning. It explores Toyota's mission, vision, and core values, and presents an in-depth analysis of the company's market dynamics using the 3C framework. The report highlights contemporary challenges Toy...

Purpose] To compare the muscle evaluation indices obtained by scanning the spastic muscles of stroke patients between the paretic and non-paretic sides using ultrasound imaging equipment, determine whether any features can be detected, and verify whether the evaluation indices that detect differences are valid for measuring the degree of spasticity...

The brushless DC (BLDC) motor requires to be controlled at the preferred speed in order to operate. A brushless DC motor's speed can be adjusted by adjusting the input voltage. In general, speed increases with voltage. The application of a Luo converter is made to satisfy the load demand, get rid of output voltage ripples, and reduce parasitic effe...

This paper proposes a new diagnostic approach for identifying bearing faults in induction motors, which are common issues that can affect the performance and durability of these motors. Although various methods have been developed to diagnose these faults, we propose a high-resolution technique based on stator current analysis, enabling more effect...

Rhetorical style is a style or art of speaking, either achieved based on natural talent or through technical skills. The art of speaking does not only mean speaking fluently without a clear and contentless way of thinking, but an ability to speak and make speeches in a short, clear, concise and impressive manner. The purpose of this research is to...

This work presents a stable and switchable dual-band generation from a polarization-dependent Erbium-doped fiber laser mode-locked by monolayer graphene as a saturable absorber. The ultrashort generated pulses at single band exhibit spectral (temporal) widths of 8.8 nm (305 fs) and 9 nm (384 fs) at 1536 nm and 1557 nm, respectively, while the simul...

This paper presents the design and analysis of a new family of machines: Closed Rotor, Radial Flux, Brushless DC Motors (PMBLDC) with Halbach Array for aerospace applications. The initial design, selection of key parameters, and magnetic flux density in the air gap are estimated using an analytical model of the machine. The percentage of Halbach ar...

Hyperventilation syndrome is far more common than generally believed, and thus usually unrecognized. It often produces misleading complaints that include alterations of consciousness, inexplicable sensory and motor sensations, and it is often masked by coexisting somatic symptoms. Confounding the confusion, patients are often unaware of excessive b...

Penelitian ini membahas implementasi manajemen pemeliharaan dengan metode preventif pada PT Astra Honda Motor (AHM), salah satu produsen otomotif terbesar di Indonesia. Fokus utama terletak pada analisis efektivitas kebijakan pemeliharaan preventif dalam meningkatkan efisiensi operasional dan keandalan fasilitas produksi. Dengan menggunakan metode...

INTRODUCTION Direct current (DC) motors are widely used in control applications due to the ease of modeling them. Controlling the position of a DC motor is essential in areas such as robotics, mechanical systems, and industrial automation. The design of a position controller using state-space methodology represents the dynamics of the DC motor syst...

Rhythm processing deficits in developmental dyslexia (DD) span across different rhythmic subcomponents and are difficult to capture using one experimental paradigm. How are dyslexic deficits related to motor periodicity, i.e., the execution of repetitive actions while internally generating rhythm? The present experiment investigated rhythm producti...

This paper regards the multivariate analysis of data for a three phase asynchronous electrical machine of 300 W equipped with a squirrel cage rotor. The recorded data are the following parameters of the motor: torque (M), rotation speed (n), voltage (U) and current (I). The aforementioned parameters are measured for both, the star and the delta con...

Purpose] To assess the neural fiber damage causing balance deficits in post-stroke patients. [Participants and Methods] Diffusion tensor imaging was conducted during the second week after stroke onset, and the Berg Balance Scale scores were recorded at discharge from our affiliated rehabilitation facility. The total score of the motor component of...

This research proposes two approaches for determining the required frequency and modulation index for a pulse-width-modulation (PWM) system in a variable frequency drive (VFD) to control the speed of the three-phase induction motor. The first approach which is the reverse direction algorithm (RDA), uses a set of equations to calculate the necessary...

Introducción: los fisioterapeutas y fonoaudiólogos como profesionales de la salud generan impacto en el rol educativo realizando acciones dentro de sus competencias de detección temprana y oportuna de las alteraciones que se presentan frecuentemente en educación inicial y preescolar a nivel de los procesos motores y comunicativos. Objetivo: realiz...

One of the primary functions of the DC motor is exemplified in its utilization for the automated operation of irrigation gates, which involves a variety of DC motor models. The DC motor chosen was influenced by the particular operational requirements of the irrigation gate. The ability to support the massive weight of the gate as well as the extrem...

Authority allowed motor driven rickshaw in the country but now decided to ban.

Visual foraging tasks, where participants collect items by touching or clicking on them, havebecome popular for investigating visual search. They probe selective attention in multi-targetcontexts through naturalistic goal-directed actions, unlike the button presses used in many otherparadigms. Despite their potential, such tasks had not been used t...

Two induction motors with parallel connected stator windings supplied by a single inverter (single observer) with a field weakening control system. The objective of this study is to propose a torque production speed sensorless vector control technique for each parallel connected rotor by adding field weakening control to improve the performance of...

Due to the factors such as high efficiency, power density and excellent torque speed characteristics, PMSM is being widely used in Electric Vehicles and other industrial applications. Hence, a lot of research works are going on to improves its control strategies. PMSM being costlier than induction motor, this paper focuses on quicker and real time...

Hoy en día las investigaciones con el actuador elástico en serie con fuerza de reacción (RFSEA) consideran principalmente las dinámicas asociadas a sus elementos mecánicos en su modelado matemático, obviando las implicaciones generadas con la dinámica asociada a la parte eléctrica del sistema, es decir, se omite la relación entre el par generado co...

Dijital dönüşümle birlikte öne çıkan yapay zekâ kavramı eğitimden sanata pek çok alanda kullanılmaya başlayarak, hızla popülerlik kazanan önemli bir uygulama ve araştırma alanı olarak kabul edilmeye başlanmıştır. Yapay zekâ sistemlerinin derin öğrenme ve algoritma alt yapısıyla motor üretimlerin ötesinde duygusal davranışlar, karar verme ve yaratıc...

With the rapid development of the Internet of Things (IoT) and the need to improve teaching efficiency, this paper proposes a smart classroom automation system leveraging IoT and cloud computing. The system uses Raspberry Pi, Node-RED, and the Favoriot platform to automate and monitor classroom conditions such as lighting, HVAC, and security. Key c...

El sector bananero ecuatoriano es crucial para la economía del país, siendo una de las principales fuentes de exportación y empleo. Este estudio examina cómo las estrategias competitivas, tales como certificaciones internacionales, sostenibilidad ambiental y percepción de calidad, influyen en la competitividad de los productores bananeros en Ecuado...

Se desarrollaron modelos matemáticos equivalentes de placa con orifico usando un diseño de experimentos de factorial completo, y simulaciones en elemento finito, para estimar la caída de presión, y la pérdida de carga de un lubricante mientras pasa por el sistema de lubricación de un motor de turbina. Esta caída de presión se obtiene calculando el...

This paper provides a systematic review of spiral enteroscopy (SE), an advanced endoscopic technique for small bowel exploration. It highlights the clinical challenges of traditional enteroscopy methods and discusses how SE overcomes these limitations through its spiral overtube mechanism. The review examines the diagnostic and therapeutic applicat...

Pelanggaran lalu lintas yang kerap terjadi di Bandar Lampung adalah tindakan melawan arus. Tindakan ini merujuk pada pengaturan lalu lintas yang mengubah arah kendaraan untuk bergerak berlawanan dengan arus yang seharusnya. Mayoritas pelanggar dalam kategori ini adalah pengendara sepeda motor. Dalam penelitian ini, metode yang digunakan adalah pend...

En la industria aeroespacial, el uso de los engranes rectos ha tenido un gran impacto en el desempeño de múltiples sistemas de aeronaves modernas. Por ejemplo, esté tipo de engranajes se utiliza en la caja de engranes de los accesorios de las turbinas, que sirve para proporcionar la energía mecánica de arranque de los motores a través de sus compon...

Spinocerebellar ataxia type 17 (SCA17) is a hereditary neurodegenerative disorder characterized by progressive motor and cognitive decline, leading to severe disability and death. SCA17 is caused by a CAG repeat expansion mutation in the TBP gene, resulting in the production of an abnormally long polyglutamine tract, which classifies it as a polygl...

En esta investigación se analizará el proyecto educativo de las escuelas Cantonales del estado de Veracruz, planteles de educación primaria promovidos por el gobernador Juan de la Luz Enríquez de la mano de Enrique C. Rébsamen, como parte de la transformación de la educación pública de esa entidad. Erigidas en las cabeceras de los 18 cantones o dis...

Este artículo propone la construcción de una plataforma experimental de un Cobot, destinada a fines pedagógicos. La estructura del Cobot se fabrica mediante técnicas de manufactura aditiva del tipo modelado por deposición fundida (FDM, por sus siglas en inglés, Fused Deposition Modeling), basada en el modelo EB-15 de "ToolBox Robotics". Para los ac...

Stroke is the second leading cause of death globally, with a rising prevalence in line with increasing life expectancy. Hemiparesis, affecting up to 85% of stroke survivors, leads to impaired arm and hand movement, reduced strength, and limited coordination, significantly affecting daily activities. Despite rehabilitation efforts, many stroke survi...

Recent research shows that the intention to act on an object alters its neural representation in ways as afforded by underlying sensorimotor processes. For example, the intention to grasp and pick up an object results in representations of the object`s weight. But these representations become grasp-specific only immediately before object lift if we...

We proposed to design and evaluate a dexterous robotic hand through teleoperation. We introduced a dexterous hand with four fully actuated fingers, providing 16 degrees of freedom. A motor independently controls each joint, ensuring precise and flexible movements. The design incorporates an innovative joint distribution structure, enhancing the han...

While motor impairments have been extensively studied in Parkinson’s Disease, rapid visuomotor transformations for flexible interaction with the environment have received surprisingly little attention. In recent years, such rapid visuomotor transformations have been studied in the form of express visuomotor responses (EVRs), which are goal-directed...

Este estudio tiene como objetivo proponer una actualización tecnológica de los carros taller existentes en el Ejército Nacional de Colombia, con el fin de mejorar la asistencia técnica en el mantenimiento de motores diésel y reducir los costos asociados al uso de servicios externos. La situación actual de estos vehículos es crítica, ya que muchos d...

Å leve tett på havet har vært et liv under marginale forhold. Havet gir utsyn mot verden, liv og velstand, men også tap og savn. Historier om kystbefolkningens kår og hverdag er en fortelling om overlevelse, tilpasninger og brottsjøer. 1900-tallet innebar en brytningstid der tradisjonelle kystsamfunn møtte nye tanker og teknologier. Skipsfart og fi...

I. Pendahuluan Kreativitas dan inovasi merupakan elemen fundamental dalam dunia kewirausahaan. Kreativitas memungkinkan wirausahawan untuk melihat peluang yang tidak terlihat oleh orang lain, sementara inovasi membantu mentransformasi ide-ide tersebut menjadi solusi yang berdaya guna. Dalam era disrupsi digital, dinamika bisnis menuntut kemampuan a...

Although many studies have validated wave energy converter (WEC) numerical models against scaled prototype experimental data, there remains a notable lack of validation using data from full-scale deployed WECs. This paper compares two numerical models of Monterey Bay Aquarium Research Institute’s Wave Energy Converter (MBARI-WEC), a two-body point...

El desempeño docente es esencial en la efectividad escolar y la calidad educativa. El presente estudio planteó como objetivo identificar los factores que ejercen influencia en el rendimiento de los docentes, utilizando la metodología PRISMA con el fin de asegurar replicabilidad evitando sesgos. La investigación tuvo como fundamento el método sistem...

Background Temporal interference electrical stimulation (TI) is promise in targeting deep brain regions focally. However, limited electric field intensity challenges its efficacy. Objective This study aimed to introduce a high-current TI electrical stimulation protocol to enhance its intensity and evaluate its safety and efficacy when applied to t...

Children's fundamental movement skills (FMS) require planned and guided interventions to develop appropriately. We investigated the effect of a novel Physical Education (PE) method to develop children's object control, locomotor skills, and motor competence. Further, we examined children's trainability, i.e., their differential responses to the new...

In high-speed train operation control, the traction/braking force usually cannot be directly adjusted due to the nonlinear relationship with the motor armature current. In this paper, adaptive iterative learning operation control is studied for high-speed train. The traction and braking phases are simultaneously considered and an electrical structu...

Gait is one of the most extensively studied motor tasks using motion capture systems, the gold standard for instrumental gait analysis. Various sensor-based solutions have been recently proposed to evaluate gait parameters, typically providing lower accuracy but greater flexibility. Validation procedures are crucial to assess the measurement accura...